Update golang.org/x/oauth2 commit hash to 5d25da1 (#376)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

.circleci/Makefile

@@ -0,0 +1,16 @@
+.PHONY: all
+all:
+
+.PHONY: install-test-deps
+install-test-deps:
+	go get -v github.com/int128/goxzst
+
+.PHONY: install-release-deps
+install-release-deps: go
+	go get -v github.com/int128/goxzst github.com/int128/ghcp
+
+go:
+	curl -sSfL -o go.tgz "https://golang.org/dl/go`ruby go_version_from_config.rb < config.yml`.darwin-amd64.tar.gz"
+	tar -xf go.tgz
+	rm go.tgz
+	./go/bin/go version

.circleci/config.yml

@@ -1,38 +1,60 @@
-version: 2
+version: 2.1
+
 jobs:
-  build:
+  test:
     docker:
-      - image: circleci/golang:1.13.3
+      - image: cimg/go:1.14.7
     steps:
-      - run: |
-          mkdir -p ~/bin
-          echo 'export PATH="$HOME/bin:$PATH"' >> $BASH_ENV
-      - run: |
-          curl -L -o ~/bin/kubectl https://storage.googleapis.com/kubernetes-release/release/v1.14.0/bin/linux/amd64/kubectl
-          chmod +x ~/bin/kubectl
-      - run: |
-          curl -L -o ~/bin/ghcp https://github.com/int128/ghcp/releases/download/v1.5.0/ghcp_linux_amd64
-          chmod +x ~/bin/ghcp
-      - run: |
-          curl -sfL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | sh -s -- -b ~/bin v1.21.0
-      - run: go get github.com/int128/goxzst
-      - run: go get github.com/tcnksm/ghr
       - checkout
+      - restore_cache:
+          keys:
+            - go-sum-{{ checksum "go.sum" }}
+      - run: make -C .circleci install-test-deps
       - run: make check
       - run: bash <(curl -s https://codecov.io/bash)
-      - run: make run
+      - run: make dist
+      - save_cache:
+          key: go-sum-{{ checksum "go.sum" }}
+          paths:
+            - ~/go/pkg
+      - store_artifacts:
+          path: gotest.log
+
+  release:
+    macos:
+      # https://circleci.com/docs/2.0/testing-ios/
+      xcode: 11.5.0
+    steps:
+      - run: echo 'export PATH="$HOME/go/bin:$PWD/.circleci/go/bin:$PATH"' >> $BASH_ENV
+      - checkout
+      - restore_cache:
+          keys:
+            - go-macos-{{ checksum "go.sum" }}
+      - run: make -C .circleci install-release-deps
       - run: make dist
       - run: |
           if [ "$CIRCLE_TAG" ]; then
             make release
           fi
+      - save_cache:
+          key: go-macos-{{ checksum "go.sum" }}
+          paths:
+            - ~/go/pkg
 
 workflows:
   version: 2
-  all:
+  build:
     jobs:
-      - build:
-          context: open-source
+      - test:
           filters:
             tags:
-              only: /.*/
+              only: /^v.*/
+      - release:
+          context: open-source
+          requires:
+            - test
+          filters:
+            branches:
+              only: /^release-feature.*/
+            tags:
+              only: /^v.*/

.circleci/go.mod

@@ -0,0 +1,3 @@
+module github.com/int128/kubelogin/.circleci
+
+go 1.13

.circleci/go_version_from_config.rb

@@ -0,0 +1,11 @@
+require 'yaml'
+
+config = YAML.load(STDIN)
+
+image = config["jobs"]["test"]["docker"][0]["image"]
+if !image.start_with?("cimg/go:")
+  raise "unknown image #{image} in #{configPath}"
+end
+
+goVersion = image.delete_prefix("cimg/go:")
+print(goVersion)

.github/FUNDING.yml

@@ -0,0 +1,12 @@
+# These are supported funding model platforms
+
+github: [int128] # Replace with up to 4 GitHub Sponsors-enabled usernames e.g., [user1, user2]
+patreon: # Replace with a single Patreon username
+open_collective: # Replace with a single Open Collective username
+ko_fi: # Replace with a single Ko-fi username
+tidelift: # Replace with a single Tidelift platform-name/package-name e.g., npm/babel
+community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
+liberapay: # Replace with a single Liberapay username
+issuehunt: # Replace with a single IssueHunt username
+otechie: # Replace with a single Otechie username
+custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,23 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: bug
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Steps to reproduce the behavior.
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Environment**
+ - OS: [e.g. macOS, Linux]
+ - kubelogin version: [e.g. 1.19.3]
+ - kubectl version: [e.g. 1.19]
+ - OpenID Connect provider: [e.g. Google, Okta]

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,17 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: enhancement
+assignees: ''
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.

.github/renovate.json

@@ -0,0 +1,8 @@
+{
+  "extends": [
+    "config:base"
+  ],
+  "postUpdateOptions": [
+    "gomodTidy"
+  ]
+}

.github/workflows/golangci-lint.yaml

@@ -0,0 +1,14 @@
+on:
+  push:
+    paths:
+      - .github/workflows/golangci-lint.yaml
+      - '**.go'
+jobs:
+  golangci:
+    name: lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: golangci/golangci-lint-action@v2
+        with:
+          version: v1.30

.github/workflows/system-test.yaml

@@ -0,0 +1,29 @@
+on:
+  push:
+    paths: 
+      - .github/workflows/system-test.yaml
+      - system_test/**
+      - pkg/**
+      - go.*
+jobs:
+  system-test:
+    # https://help.github.com/en/actions/automating-your-workflow-with-github-actions/software-installed-on-github-hosted-runners#ubuntu-1804-lts
+    runs-on: ubuntu-18.04
+    steps:
+      - uses: actions/setup-go@v2
+        with:
+          go-version: 1.14
+        id: go
+      - uses: actions/checkout@v2
+      - uses: actions/cache@v2
+        with:
+          path: ~/go/pkg/mod
+          key: go-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            go-
+      # https://packages.ubuntu.com/xenial/libnss3-tools
+      - run: sudo apt update
+      - run: sudo apt install -y libnss3-tools
+      - run: echo '127.0.0.1 dex-server' | sudo tee -a /etc/hosts
+      - run: make -C system_test -j3 setup
+      - run: make -C system_test test

.gitignore

@@ -1,9 +1,13 @@
 /.idea
 
-/.kubeconfig*
+/system_test/output/
+/acceptance_test/output/
 
-/dist
+/dist/output
 /coverage.out
+/gotest.log
 
 /kubelogin
 /kubectl-oidc_login
+
+/.circleci/go/

Makefile

@@ -1,46 +1,48 @@
+# CircleCI specific variables
+CIRCLE_TAG ?= latest
+GITHUB_USERNAME := $(CIRCLE_PROJECT_USERNAME)
+GITHUB_REPONAME := $(CIRCLE_PROJECT_REPONAME)
+
 TARGET := kubelogin
-TARGET_PLUGIN := kubectl-oidc_login
-CIRCLE_TAG ?= HEAD
-LDFLAGS := -X main.version=$(CIRCLE_TAG)
+TARGET_OSARCH := linux_amd64 darwin_amd64 windows_amd64 linux_arm linux_arm64
+VERSION ?= $(CIRCLE_TAG)
+LDFLAGS := -X main.version=$(VERSION)
 
 all: $(TARGET)
 
-.PHONY: check
-check:
-	golangci-lint run
-	go test -v -race -cover -coverprofile=coverage.out ./...
-
-$(TARGET): $(wildcard *.go)
+$(TARGET): $(wildcard **/*.go)
 	go build -o $@ -ldflags "$(LDFLAGS)"
 
-$(TARGET_PLUGIN): $(TARGET)
-	ln -sf $(TARGET) $@
+.PHONY: check
+check:
+	go test -v -race -cover -coverprofile=coverage.out ./... > gotest.log
 
-.PHONY: run
-run: $(TARGET_PLUGIN)
-	-PATH=.:$(PATH) kubectl oidc-login --help
-
-dist:
-    # make the zip files for GitHub Releases
-	VERSION=$(CIRCLE_TAG) goxzst -d dist/gh/ -i "LICENSE" -o "$(TARGET)" -t "kubelogin.rb oidc-login.yaml" -- -ldflags "$(LDFLAGS)"
-	zipinfo dist/gh/kubelogin_linux_amd64.zip
-	# make the Homebrew formula
-	mv dist/gh/kubelogin.rb dist/
-	# make the yaml for krew-index
-	mkdir -p dist/plugins
-	cp dist/gh/oidc-login.yaml dist/plugins/oidc-login.yaml
+.PHONY: dist
+dist: dist/output
+dist/output:
+	# make the zip files for GitHub Releases
+	VERSION=$(VERSION) goxzst -d dist/output -i "LICENSE" -o "$(TARGET)" -osarch "$(TARGET_OSARCH)" -t "dist/kubelogin.rb dist/oidc-login.yaml dist/Dockerfile" -- -ldflags "$(LDFLAGS)"
+	# test the zip file
+	zipinfo dist/output/kubelogin_linux_amd64.zip
+	# make the krew yaml structure
+	mkdir -p dist/output/plugins
+	mv dist/output/oidc-login.yaml dist/output/plugins/oidc-login.yaml
 
 .PHONY: release
 release: dist
-    # publish to the GitHub Releases
-	ghr -u "$(CIRCLE_PROJECT_USERNAME)" -r "$(CIRCLE_PROJECT_REPONAME)" "$(CIRCLE_TAG)" dist/gh/
-	# publish to the Homebrew tap repository
-	ghcp commit -u "$(CIRCLE_PROJECT_USERNAME)" -r "homebrew-$(CIRCLE_PROJECT_REPONAME)" -m "$(CIRCLE_TAG)" -C dist/ kubelogin.rb
-	# fork krew-index and create a branch
-	ghcp fork-commit -u kubernetes-sigs -r krew-index -b "oidc-login-$(CIRCLE_TAG)" -m "Bump oidc-login to $(CIRCLE_TAG)" -C dist/ plugins/oidc-login.yaml
+	# publish the binaries
+	ghcp release -u "$(GITHUB_USERNAME)" -r "$(GITHUB_REPONAME)" -t "$(VERSION)" dist/output/
+	# publish the Homebrew formula
+	ghcp commit -u "$(GITHUB_USERNAME)" -r "homebrew-$(GITHUB_REPONAME)" -b "bump-$(VERSION)" -m "Bump the version to $(VERSION)" -C dist/output/ kubelogin.rb
+	ghcp pull-request -u "$(GITHUB_USERNAME)" -r "homebrew-$(GITHUB_REPONAME)" -b "bump-$(VERSION)" --title "Bump the version to $(VERSION)"
+	# publish the Dockerfile
+	ghcp commit -u "$(GITHUB_USERNAME)" -r "$(GITHUB_REPONAME)-docker" -b "bump-$(VERSION)" -m "Bump the version to $(VERSION)" -C dist/output/ Dockerfile
+	ghcp pull-request -u "$(GITHUB_USERNAME)" -r "$(GITHUB_REPONAME)-docker" -b "bump-$(VERSION)" --title "Bump the version to $(VERSION)"
+	# publish the Krew manifest
+	ghcp fork-commit -u kubernetes-sigs -r krew-index -b "oidc-login-$(VERSION)" -m "Bump oidc-login to $(VERSION)" -C dist/output/ plugins/oidc-login.yaml
 
 .PHONY: clean
 clean:
 	-rm $(TARGET)
-	-rm $(TARGET_PLUGIN)
-	-rm -r dist/
+	-rm -r dist/output/
+	-rm coverage.out gotest.log

README.md

@@ -4,7 +4,7 @@ This is a kubectl plugin for [Kubernetes OpenID Connect (OIDC) authentication](h
 
 Here is an example of Kubernetes authentication with the Google Identity Platform:
 
-<img alt="screencast" src="https://user-images.githubusercontent.com/321266/68352462-dcfc8b00-0149-11ea-8896-1632858a43c0.gif" width="650" height="470">
+<img alt="screencast" src="https://user-images.githubusercontent.com/321266/85427290-86e43700-b5b6-11ea-9e97-ffefd736c9b7.gif" width="572" height="391">
 
 Kubelogin is designed to run as a [client-go credential plugin](https://kubernetes.io/docs/reference/access-authn-authz/authentication/#client-go-credential-plugins).
 When you run kubectl, kubelogin opens the browser and you can log in to the provider.
@@ -18,19 +18,17 @@ Take a look at the diagram:
 
 ### Setup
 
-Install the latest release from [Homebrew](https://brew.sh/), [Krew](https://github.com/kubernetes-sigs/krew) or [GitHub Releases](https://github.com/int128/kubelogin/releases) as follows:
+Install the latest release from [Homebrew](https://brew.sh/), [Krew](https://github.com/kubernetes-sigs/krew), [Chocolatey](https://chocolatey.org/packages/kubelogin) or [GitHub Releases](https://github.com/int128/kubelogin/releases).
 
 ```sh
-# Homebrew
+# Homebrew (macOS and Linux)
 brew install int128/kubelogin/kubelogin
 
-# Krew
+# Krew (macOS, Linux, Windows and ARM)
 kubectl krew install oidc-login
 
-# GitHub Releases
-curl -LO https://github.com/int128/kubelogin/releases/download/v1.15.0/kubelogin_linux_amd64.zip
-unzip kubelogin_linux_amd64.zip
-ln -s kubelogin kubectl-oidc_login
+# Chocolatey (Windows)
+choco install kubelogin
 ```
 
 You need to set up the OIDC provider, cluster role binding, Kubernetes API server and kubeconfig.
@@ -51,7 +49,7 @@ users:
       - --oidc-client-secret=YOUR_CLIENT_SECRET
 ```
 
-See [the setup guide](docs/setup.md) for more.
+See [setup guide](docs/setup.md) for more.
 
 
 ### Run
@@ -72,7 +70,6 @@ After authentication, kubelogin returns the credentials to kubectl and finally k
 ```
 % kubectl get pods
 Open http://localhost:8000 for authentication
-You got a valid token until 2019-05-18 10:28:51 +0900 JST
 NAME                          READY   STATUS    RESTARTS   AGE
 echoserver-86c78fdccd-nzmd5   1/1     Running   0          26d
 ```
@@ -83,155 +80,35 @@ If the cached ID token is valid, kubelogin just returns it.
 If the cached ID token has expired, kubelogin will refresh the token using the refresh token.
 If the refresh token has expired, kubelogin will perform reauthentication.
 
+
+### Troubleshoot
+
 You can log out by removing the token cache directory (default `~/.kube/cache/oidc-login`).
 Kubelogin will perform authentication if the token cache file does not exist.
 
+You can dump claims of an ID token by `setup` command.
 
-## Usage
+```console
+% kubectl oidc-login setup --oidc-issuer-url https://accounts.google.com --oidc-client-id REDACTED --oidc-client-secret REDACTED
+...
+You got a token with the following claims:
 
-This document is for the development version.
-If you are looking for a specific version, see [the release tags](https://github.com/int128/kubelogin/tags).
-
-Kubelogin supports the following options:
-
-```
-% kubectl oidc-login get-token -h
-Run as a kubectl credential plugin
-
-Usage:
-  kubelogin get-token [flags]
-
-Flags:
-      --oidc-issuer-url string         Issuer URL of the provider (mandatory)
-      --oidc-client-id string          Client ID of the provider (mandatory)
-      --oidc-client-secret string      Client secret of the provider
-      --oidc-extra-scope strings       Scopes to request to the provider
-      --certificate-authority string   Path to a cert file for the certificate authority
-      --insecure-skip-tls-verify       If true, the server's certificate will not be checked for validity. This will make your HTTPS connections insecure
-      --token-cache-dir string         Path to a directory for caching tokens (default "~/.kube/cache/oidc-login")
-      --grant-type string              The authorization grant type to use. One of (auto|authcode|authcode-keyboard|password) (default "auto")
-      --listen-port ints               Port to bind to the local server. If multiple ports are given, it will try the ports in order (default [8000,18000])
-      --skip-open-browser              If true, it does not open the browser on authentication
-      --username string                If set, perform the resource owner password credentials grant
-      --password string                If set, use the password instead of asking it
-  -h, --help                           help for get-token
-
-Global Flags:
-      --add_dir_header                   If true, adds the file directory to the header
-      --alsologtostderr                  log to standard error as well as files
-      --log_backtrace_at traceLocation   when logging hits line file:N, emit a stack trace (default :0)
-      --log_dir string                   If non-empty, write log files in this directory
-      --log_file string                  If non-empty, use this log file
-      --log_file_max_size uint           Defines the maximum size a log file can grow to. Unit is megabytes. If the value is 0, the maximum file size is unlimited. (default 1800)
-      --logtostderr                      log to standard error instead of files (default true)
-      --skip_headers                     If true, avoid header prefixes in the log messages
-      --skip_log_headers                 If true, avoid headers when opening log files
-      --stderrthreshold severity         logs at or above this threshold go to stderr (default 2)
-  -v, --v Level                          number for the log level verbosity
-      --vmodule moduleSpec               comma-separated list of pattern=N settings for file-filtered logging
+{
+  "sub": "********",
+  "iss": "https://accounts.google.com",
+  "aud": "********",
+  ...
+}
 ```
 
-See also the options of [standalone mode](docs/standalone-mode.md).
-
-### Extra scopes
-
-You can set the extra scopes to request to the provider by `--oidc-extra-scope`.
-
-```yaml
-      - --oidc-extra-scope=email
-      - --oidc-extra-scope=profile
-```
-
-### CA Certificates
-
-You can use your self-signed certificate for the provider.
-
-```yaml
-      - --certificate-authority=/home/user/.kube/keycloak-ca.pem
-```
-
-### HTTP Proxy
-
-You can set the following environment variables if you are behind a proxy: `HTTP_PROXY`, `HTTPS_PROXY` and `NO_PROXY`.
-See also [net/http#ProxyFromEnvironment](https://golang.org/pkg/net/http/#ProxyFromEnvironment).
+You can verify kubelogin works with your provider using [acceptance test](acceptance_test).
 
 
-### Authentication flows
+## Docs
 
-#### Authorization code flow
-
-Kubelogin performs the authorization code flow by default.
-
-It starts the local server at port 8000 or 18000 by default.
-You need to register the following redirect URIs to the provider:
-
-- `http://localhost:8000`
-- `http://localhost:18000` (used if port 8000 is already in use)
-
-You can change the ports by the option:
-
-```yaml
-      - --listen-port=12345
-      - --listen-port=23456
-```
-
-#### Authorization code flow with keyboard interactive
-
-If you cannot access the browser, instead use the authorization code flow with keyboard interactive.
-
-```yaml
-      - --grant-type=authcode-keyboard
-```
-
-Kubelogin will show the URL and prompt.
-Open the URL in the browser and then copy the code shown.
-
-```
-% kubectl get pods
-Open https://accounts.google.com/o/oauth2/v2/auth?access_type=offline&client_id=...
-Enter code: YOUR_CODE
-```
-
-Note that this flow uses the redirect URI `urn:ietf:wg:oauth:2.0:oob` and
-some OIDC providers do not support it.
-
-#### Resource owner password credentials grant flow
-
-Kubelogin performs the resource owner password credentials grant flow
-when `--grant-type=password` or `--username` is set.
-
-Note that most OIDC providers do not support this flow.
-Keycloak supports this flow but you need to explicitly enable the "Direct Access Grants" feature in the client settings.
-
-You can set the username and password.
-
-```yaml
-      - --username=USERNAME
-      - --password=PASSWORD
-```
-
-If the password is not set, kubelogin will show the prompt for the password.
-
-```yaml
-      - --username=USERNAME
-```
-
-```
-% kubectl get pods
-Password:
-```
-
-If the username is not set, kubelogin will show the prompt for the username and password.
-
-```yaml
-      - --grant-type=password
-```
-
-```
-% kubectl get pods
-Username: foo
-Password:
-```
+- [Setup guide](docs/setup.md)
+- [Usage and options](docs/usage.md)
+- [Standalone mode](docs/standalone-mode.md) (deprecated)
 
 
 ## Related works
@@ -248,7 +125,7 @@ Feel free to open issues and pull requests for improving code and documents.
 
 ### Development
 
-Go 1.12 or later is required.
+Go 1.13 or later is required.
 
 ```sh
 # Run lint and tests
@@ -258,3 +135,7 @@ make check
 make
 ./kubelogin
 ```
+
+### System test
+
+See [system test](system_test) for more.

acceptance_test/Makefile

@@ -0,0 +1,42 @@
+CLUSTER_NAME := kubelogin-acceptance-test
+OUTPUT_DIR := $(CURDIR)/output
+
+KUBECONFIG := $(OUTPUT_DIR)/kubeconfig.yaml
+export KUBECONFIG
+
+# create a Kubernetes cluster
+.PHONY: cluster
+cluster:
+	# create a cluster
+	mkdir -p $(OUTPUT_DIR)
+	sed -e "s|OIDC_ISSUER_URL|$(OIDC_ISSUER_URL)|" -e "s|OIDC_CLIENT_ID|$(OIDC_CLIENT_ID)|" cluster.yaml > $(OUTPUT_DIR)/cluster.yaml
+	kind create cluster --name $(CLUSTER_NAME) --config $(OUTPUT_DIR)/cluster.yaml
+	# set up access control
+	kubectl create clusterrole cluster-readonly --verb=get,watch,list --resource='*.*'
+	kubectl create clusterrolebinding cluster-readonly --clusterrole=cluster-readonly --user=$(YOUR_EMAIL)
+	# set up kubectl
+	kubectl config set-credentials oidc \
+		--exec-api-version=client.authentication.k8s.io/v1beta1 \
+		--exec-command=$(CURDIR)/../kubelogin \
+		--exec-arg=get-token \
+		--exec-arg=--token-cache-dir=$(OUTPUT_DIR)/token-cache \
+		--exec-arg=--oidc-issuer-url=$(OIDC_ISSUER_URL) \
+		--exec-arg=--oidc-client-id=$(OIDC_CLIENT_ID) \
+		--exec-arg=--oidc-client-secret=$(OIDC_CLIENT_SECRET) \
+		--exec-arg=--oidc-extra-scope=email
+	# switch the default user
+	kubectl config set-context --current --user=oidc
+
+# clean up the resources
+.PHONY: clean
+clean:
+	-rm -r $(OUTPUT_DIR)
+.PHONY: delete-cluster
+delete-cluster:
+	kind delete cluster --name $(CLUSTER_NAME)
+
+.PHONY: check
+check:
+	docker version
+	kind version
+	kubectl version --client

acceptance_test/README.md

@@ -0,0 +1,75 @@
+# kubelogin/acceptance_test
+
+This is a manual test for verifying Kubernetes OIDC authentication with your OIDC provider.
+
+
+## Purpose
+
+This test checks the following points:
+
+1. You can set up your OIDC provider using [setup guide](../docs/setup.md).
+1. The plugin works with your OIDC provider.
+
+
+## Getting Started
+
+### Prerequisite
+
+You need to build the plugin into the parent directory.
+
+```sh
+make -C ..
+```
+
+You need to set up your provider.
+See [setup guide](../docs/setup.md) for more.
+
+You need to install the following tools:
+
+- Docker
+- Kind
+- kubectl
+
+You can check if the tools are available.
+
+```sh
+make check
+```
+
+### 1. Create a cluster
+
+Create a cluster.
+For example, you can create a cluster with Google account authentication.
+
+```sh
+make OIDC_ISSUER_URL=https://accounts.google.com \
+  OIDC_CLIENT_ID=REDACTED.apps.googleusercontent.com \
+  OIDC_CLIENT_SECRET=REDACTED \
+  YOUR_EMAIL=REDACTED@gmail.com
+```
+
+It will do the following steps:
+
+1. Create a cluster.
+1. Set up access control. It allows read-only access from your email address.
+1. Set up kubectl to enable the plugin.
+
+You can change kubectl configuration in generated `output/kubeconfig.yaml`.
+
+### 2. Run kubectl
+
+Make sure you can log in to the provider and access the cluster.
+
+```console
+% export KUBECONFIG=$PWD/output/kubeconfig.yaml
+% kubectl get pods -A
+```
+
+### Clean up
+
+To delete the cluster and generated files:
+
+```sh
+make delete-cluster
+make clean
+```

acceptance_test/cluster.yaml

@@ -0,0 +1,13 @@
+kind: Cluster
+apiVersion: kind.x-k8s.io/v1alpha4
+kubeadmConfigPatches:
+  - |
+    apiVersion: kubeadm.k8s.io/v1beta2
+    kind: ClusterConfiguration
+    metadata:
+      name: config
+    apiServer:
+      extraArgs:
+        oidc-issuer-url: OIDC_ISSUER_URL
+        oidc-client-id: OIDC_CLIENT_ID
+        oidc-username-claim: email

dist/Dockerfile

@@ -0,0 +1,13 @@
+FROM alpine:3.12
+
+ARG KUBELOGIN_VERSION="{{ env "VERSION" }}"
+ARG KUBELOGIN_SHA256="{{ sha256 .linux_amd64_archive }}"
+
+# Download the release and test the checksum
+RUN wget -O /kubelogin.zip "https://github.com/int128/kubelogin/releases/download/$KUBELOGIN_VERSION/kubelogin_linux_amd64.zip" && \
+    echo "$KUBELOGIN_SHA256  /kubelogin.zip" | sha256sum -c - && \
+    unzip /kubelogin.zip && \
+    rm /kubelogin.zip
+
+USER daemon
+ENTRYPOINT ["/kubelogin"]

dist/kubelogin.rb

@@ -1,15 +1,27 @@
 class Kubelogin < Formula
   desc "A kubectl plugin for Kubernetes OpenID Connect authentication"
   homepage "https://github.com/int128/kubelogin"
-  url "https://github.com/int128/kubelogin/releases/download/{{ env "VERSION" }}/kubelogin_darwin_amd64.zip"
+  baseurl = "https://github.com/int128/kubelogin/releases/download"
   version "{{ env "VERSION" }}"
-  sha256 "{{ sha256 .darwin_amd64_archive }}"
+  
+  if OS.mac?
+    kernel = "darwin"
+    sha256 "{{ sha256 .darwin_amd64_archive }}"
+  elsif OS.linux?
+    kernel = "linux"
+    sha256 "{{ sha256 .linux_amd64_archive }}"
+  end 
+   
+  url baseurl + "/#{version}/kubelogin_#{kernel}_amd64.zip"
+    
   def install
     bin.install "kubelogin" => "kubelogin"
     ln_s bin/"kubelogin", bin/"kubectl-oidc_login"
   end
+  
   test do
     system "#{bin}/kubelogin -h"
     system "#{bin}/kubectl-oidc_login -h"
   end
+    
 end

dist/oidc-login.yaml

@@ -22,8 +22,6 @@ spec:
 
   caveats: |
     You need to setup the OIDC provider, Kubernetes API server, role binding and kubeconfig.
-    See https://github.com/int128/kubelogin for more.
-
   version: {{ env "VERSION" }}
   platforms:
     - uri: https://github.com/int128/kubelogin/releases/download/{{ env "VERSION" }}/kubelogin_linux_amd64.zip
@@ -62,3 +60,27 @@ spec:
         matchLabels:
           os: windows
           arch: amd64
+    - uri: https://github.com/int128/kubelogin/releases/download/{{ env "VERSION" }}/kubelogin_linux_arm.zip
+      sha256: "{{ sha256 .linux_arm_archive }}"
+      bin: kubelogin
+      files:
+        - from: kubelogin
+          to: .
+        - from: LICENSE
+          to: .
+      selector:
+        matchLabels:
+          os: linux
+          arch: arm
+    - uri: https://github.com/int128/kubelogin/releases/download/{{ env "VERSION" }}/kubelogin_linux_arm64.zip
+      sha256: "{{ sha256 .linux_arm64_archive }}"
+      bin: kubelogin
+      files:
+        - from: kubelogin
+          to: .
+        - from: LICENSE
+          to: .
+      selector:
+        matchLabels:
+          os: linux
+          arch: arm64

docs/setup.md

@@ -1,6 +1,6 @@
 # Kubernetes OpenID Connection authentication
 
-This document guides how to set up the Kubernetes OpenID Connect (OIDC) authentication.
+This document guides how to set up Kubernetes OpenID Connect (OIDC) authentication.
 Let's see the following steps:
 
 1. Set up the OIDC provider
@@ -35,7 +35,7 @@ Variable                | Value
 You can log in with a user of Keycloak.
 Make sure you have an administrator role of the Keycloak realm.
 
-Open the Keycloak and create an OIDC client as follows:
+Open Keycloak and create an OIDC client as follows:
 
 - Client ID: `YOUR_CLIENT_ID`
 - Valid Redirect URLs:
@@ -52,7 +52,7 @@ You can associate client roles by adding the following mapper:
 - Token Claim Name: `groups`
 - Add to ID token: on
 
-For example, if you have the `admin` role of the client, you will get a JWT with the claim `{"groups": ["kubernetes:admin"]}`.
+For example, if you have `admin` role of the client, you will get a JWT with the claim `{"groups": ["kubernetes:admin"]}`.
 
 Replace the following variables in the later sections.
 
@@ -72,7 +72,7 @@ Open [GitHub OAuth Apps](https://github.com/settings/developers) and create an a
 - Homepage URL: `https://dex.example.com`
 - Authorization callback URL: `https://dex.example.com/callback`
 
-Deploy the [dex](https://github.com/dexidp/dex) with the following config:
+Deploy [Dex](https://github.com/dexidp/dex) with the following config:
 
 ```yaml
 issuer: https://dex.example.com
@@ -126,6 +126,9 @@ Variable                | Value
 
 You do not need to set `YOUR_CLIENT_SECRET`.
 
+If you need `groups` claim for access control,
+see [jetstack/okta-kubectl-auth](https://github.com/jetstack/okta-kubectl-auth/blob/master/docs/okta-setup.md) and [#250](https://github.com/int128/kubelogin/issues/250).
+
 
 ## 2. Verify authentication
 
@@ -138,31 +141,23 @@ kubectl oidc-login setup \
   --oidc-client-secret=YOUR_CLIENT_SECRET
 ```
 
-It will open the browser and you can log in to the provider.
-Then it will show the instruction.
+It launches the browser and navigates to `http://localhost:8000`.
+Please log in to the provider.
+
+You can set extra options, for example, extra scope or CA certificate.
+See also the full options.
+
+```sh
+kubectl oidc-login setup --help
+```
 
 
 ## 3. Bind a cluster role
 
-In this tutorial, bind the `cluster-admin` role to you.
-Apply the following manifest:
-
-```yaml
-kind: ClusterRoleBinding
-apiVersion: rbac.authorization.k8s.io/v1
-metadata:
-  name: oidc-cluster-admin
-roleRef:
-  apiGroup: rbac.authorization.k8s.io
-  kind: ClusterRole
-  name: cluster-admin
-subjects:
-- kind: User
-  name: ISSUER_URL#YOUR_SUBJECT
-```
+Here bind `cluster-admin` role to you.
 
 ```sh
-kubectl apply -f oidc-cluster-admin.yaml
+kubectl create clusterrolebinding oidc-cluster-admin --clusterrole=cluster-admin --user='ISSUER_URL#YOUR_SUBJECT'
 ```
 
 As well as you can create a custom cluster role and bind it.
@@ -170,14 +165,14 @@ As well as you can create a custom cluster role and bind it.
 
 ## 4. Set up the Kubernetes API server
 
-Add the following options to the kube-apiserver:
+Add the following flags to kube-apiserver:
 
 ```
 --oidc-issuer-url=ISSUER_URL
 --oidc-client-id=YOUR_CLIENT_ID
 ```
 
-See [OpenID Connect Tokens](https://kubernetes.io/docs/reference/access-authn-authz/authentication/#openid-connect-tokens) for details.
+See [Kubernetes Authenticating: OpenID Connect Tokens](https://kubernetes.io/docs/reference/access-authn-authz/authentication/#openid-connect-tokens) for the all flags.
 
 If you are using [kops](https://github.com/kubernetes/kops), run `kops edit cluster` and append the following settings:
 
@@ -200,35 +195,32 @@ If you are using [kube-aws](https://github.com/kubernetes-incubator/kube-aws), a
 
 ## 5. Set up the kubeconfig
 
-Add the following user to the kubeconfig:
+Add `oidc` user to the kubeconfig.
 
-```yaml
-users:
-- name: oidc
-  user:
-    exec:
-      apiVersion: client.authentication.k8s.io/v1beta1
-      command: kubectl
-      args:
-      - oidc-login
-      - get-token
-      - --oidc-issuer-url=ISSUER_URL
-      - --oidc-client-id=YOUR_CLIENT_ID
-      - --oidc-client-secret=YOUR_CLIENT_SECRET
+```sh
+kubectl config set-credentials oidc \
+  --exec-api-version=client.authentication.k8s.io/v1beta1 \
+  --exec-command=kubectl \
+  --exec-arg=oidc-login \
+  --exec-arg=get-token \
+  --exec-arg=--oidc-issuer-url=ISSUER_URL \
+  --exec-arg=--oidc-client-id=YOUR_CLIENT_ID \
+  --exec-arg=--oidc-client-secret=YOUR_CLIENT_SECRET
 ```
 
-You can share the kubeconfig to your team members for on-boarding.
-
 
 ## 6. Verify cluster access
 
 Make sure you can access the Kubernetes cluster.
 
+```sh
+kubectl --user=oidc cluster-info
 ```
-% kubectl get nodes
-Open http://localhost:8000 for authentication
-You got a valid token until 2019-05-16 22:03:13 +0900 JST
-NAME                                    STATUS    ROLES     AGE       VERSION
-ip-1-2-3-4.us-west-2.compute.internal   Ready     node      21d       v1.9.6
-ip-1-2-3-5.us-west-2.compute.internal   Ready     node      20d       v1.9.6
+
+You can switch the current context to oidc.
+
+```sh
+kubectl config set-context --current --user=oidc
 ```
+
+You can share the kubeconfig to your team members for on-boarding.

docs/standalone-mode.md

@@ -75,56 +75,6 @@ If the refresh token has expired, kubelogin will proceed the authentication.
 
 ## Usage
 
-Kubelogin supports the following options:
-
-```
-% kubectl oidc-login -h
-Login to the OpenID Connect provider.
-
-You need to set up the OIDC provider, role binding, Kubernetes API server and kubeconfig.
-Run the following command to show the setup instruction:
-
-	kubectl oidc-login setup
-
-See https://github.com/int128/kubelogin for more.
-
-Usage:
-  main [flags]
-  main [command]
-
-Available Commands:
-  get-token   Run as a kubectl credential plugin
-  help        Help about any command
-  setup       Show the setup instruction
-  version     Print the version information
-
-Flags:
-      --kubeconfig string                Path to the kubeconfig file
-      --context string                   The name of the kubeconfig context to use
-      --user string                      The name of the kubeconfig user to use. Prior to --context
-      --certificate-authority string     Path to a cert file for the certificate authority
-      --insecure-skip-tls-verify         If true, the server's certificate will not be checked for validity. This will make your HTTPS connections insecure
-      --grant-type string                The authorization grant type to use. One of (auto|authcode|authcode-keyboard|password) (default "auto")
-      --listen-port ints                 Port to bind to the local server. If multiple ports are given, it will try the ports in order (default [8000,18000])
-      --skip-open-browser                If true, it does not open the browser on authentication
-      --username string                  If set, perform the resource owner password credentials grant
-      --password string                  If set, use the password instead of asking it
-      --add_dir_header                   If true, adds the file directory to the header
-      --alsologtostderr                  log to standard error as well as files
-      --log_backtrace_at traceLocation   when logging hits line file:N, emit a stack trace (default :0)
-      --log_dir string                   If non-empty, write log files in this directory
-      --log_file string                  If non-empty, use this log file
-      --log_file_max_size uint           Defines the maximum size a log file can grow to. Unit is megabytes. If the value is 0, the maximum file size is unlimited. (default 1800)
-      --logtostderr                      log to standard error instead of files (default true)
-      --skip_headers                     If true, avoid header prefixes in the log messages
-      --skip_log_headers                 If true, avoid headers when opening log files
-      --stderrthreshold severity         logs at or above this threshold go to stderr (default 2)
-  -v, --v Level                          number for the log level verbosity
-      --vmodule moduleSpec               comma-separated list of pattern=N settings for file-filtered logging
-  -h, --help                             help for main
-      --version                          version for main
-```
-
 ### Kubeconfig
 
 You can set path to the kubeconfig file by the option or the environment variable just like kubectl.

docs/usage.md

@@ -0,0 +1,216 @@
+# Usage
+
+Kubelogin supports the following options:
+
+```
+Usage:
+  kubelogin get-token [flags]
+
+Flags:
+      --oidc-issuer-url string                          Issuer URL of the provider (mandatory)
+      --oidc-client-id string                           Client ID of the provider (mandatory)
+      --oidc-client-secret string                       Client secret of the provider
+      --oidc-extra-scope strings                        Scopes to request to the provider
+      --token-cache-dir string                          Path to a directory for token cache (default "~/.kube/cache/oidc-login")
+      --certificate-authority string                    Path to a cert file for the certificate authority
+      --certificate-authority-data string               Base64 encoded cert for the certificate authority
+      --insecure-skip-tls-verify                        If set, the server's certificate will not be checked for validity. This will make your HTTPS connections insecure
+      --grant-type string                               Authorization grant type to use. One of (auto|authcode|authcode-keyboard|password) (default "auto")
+      --listen-address strings                          [authcode] Address to bind to the local server. If multiple addresses are set, it will try binding in order (default [127.0.0.1:8000,127.0.0.1:18000])
+      --skip-open-browser                               [authcode] Do not open the browser automatically
+      --open-url-after-authentication string            [authcode] If set, open the URL in the browser after authentication
+      --oidc-redirect-url-hostname string               [authcode] Hostname of the redirect URL (default "localhost")
+      --oidc-auth-request-extra-params stringToString   [authcode, authcode-keyboard] Extra query parameters to send with an authentication request (default [])
+      --username string                                 [password] Username for resource owner password credentials grant
+      --password string                                 [password] Password for resource owner password credentials grant
+  -h, --help                                            help for get-token
+
+Global Flags:
+      --add_dir_header                   If true, adds the file directory to the header
+      --alsologtostderr                  log to standard error as well as files
+      --log_backtrace_at traceLocation   when logging hits line file:N, emit a stack trace (default :0)
+      --log_dir string                   If non-empty, write log files in this directory
+      --log_file string                  If non-empty, use this log file
+      --log_file_max_size uint           Defines the maximum size a log file can grow to. Unit is megabytes. If the value is 0, the maximum file size is unlimited. (default 1800)
+      --logtostderr                      log to standard error instead of files (default true)
+      --skip_headers                     If true, avoid header prefixes in the log messages
+      --skip_log_headers                 If true, avoid headers when opening log files
+      --stderrthreshold severity         logs at or above this threshold go to stderr (default 2)
+  -v, --v Level                          number for the log level verbosity
+      --vmodule moduleSpec               comma-separated list of pattern=N settings for file-filtered logging
+```
+
+
+## Options
+
+### Extra scopes
+
+You can set the extra scopes to request to the provider by `--oidc-extra-scope`.
+
+```yaml
+      - --oidc-extra-scope=email
+      - --oidc-extra-scope=profile
+```
+
+### CA Certificate
+
+You can use your self-signed certificate for the provider.
+
+```yaml
+      - --certificate-authority=/home/user/.kube/keycloak-ca.pem
+      - --certificate-authority-data=LS0t...
+```
+
+### HTTP Proxy
+
+You can set the following environment variables if you are behind a proxy: `HTTP_PROXY`, `HTTPS_PROXY` and `NO_PROXY`.
+See also [net/http#ProxyFromEnvironment](https://golang.org/pkg/net/http/#ProxyFromEnvironment).
+
+
+## Authentication flows
+
+Kubelogin support the following flows:
+
+- Authorization code flow
+- Authorization code flow with a keyboard
+- Resource owner password credentials grant flow
+
+### Authorization code flow
+
+Kubelogin performs the authorization code flow by default.
+
+It starts the local server at port 8000 or 18000 by default.
+You need to register the following redirect URIs to the provider:
+
+- `http://localhost:8000`
+- `http://localhost:18000` (used if port 8000 is already in use)
+
+You can change the listening address.
+
+```yaml
+      - --listen-address=127.0.0.1:12345
+      - --listen-address=127.0.0.1:23456
+```
+
+You can change the hostname of redirect URI from the default value `localhost`.
+
+```yaml
+      - --oidc-redirect-url-hostname=127.0.0.1
+```
+
+You can add extra parameters to the authentication request.
+
+```yaml
+      - --oidc-auth-request-extra-params=ttl=86400
+```
+
+When authentication completed, kubelogin shows a message to close the browser.
+You can change the URL to show after authentication.
+
+```yaml
+      - --open-url-after-authentication=https://example.com/success.html
+```
+
+You can skip opening the browser if you encounter some environment problem.
+
+```yaml
+      - --skip-open-browser
+```
+
+For Linux users, you change the default browser by `BROWSER` environment variable.
+
+### Authorization code flow with a keyboard
+
+If you cannot access the browser, instead use the authorization code flow with a keyboard.
+
+```yaml
+      - --grant-type=authcode-keyboard
+```
+
+Kubelogin will show the URL and prompt.
+Open the URL in the browser and then copy the code shown.
+
+```
+% kubectl get pods
+Open https://accounts.google.com/o/oauth2/v2/auth?access_type=offline&client_id=...
+Enter code: YOUR_CODE
+```
+
+Note that this flow uses the redirect URI `urn:ietf:wg:oauth:2.0:oob` and some OIDC providers do not support it.
+
+You can add extra parameters to the authentication request.
+
+```yaml
+      - --oidc-auth-request-extra-params=ttl=86400
+```
+
+### Resource owner password credentials grant flow
+
+Kubelogin performs the resource owner password credentials grant flow
+when `--grant-type=password` or `--username` is set.
+
+Note that most OIDC providers do not support this flow.
+Keycloak supports this flow but you need to explicitly enable the "Direct Access Grants" feature in the client settings.
+
+You can set the username and password.
+
+```yaml
+      - --username=USERNAME
+      - --password=PASSWORD
+```
+
+If the password is not set, kubelogin will show the prompt for the password.
+
+```yaml
+      - --username=USERNAME
+```
+
+```
+% kubectl get pods
+Password:
+```
+
+If the username is not set, kubelogin will show the prompt for the username and password.
+
+```yaml
+      - --grant-type=password
+```
+
+```
+% kubectl get pods
+Username: foo
+Password:
+```
+
+## Run in Docker
+
+You can run [the Docker image](https://quay.io/repository/int128/kubelogin) instead of the binary.
+The kubeconfig looks like:
+
+```yaml
+users:
+- name: oidc
+  user:
+    exec:
+      apiVersion: client.authentication.k8s.io/v1beta1
+      command: docker
+      args:
+      - run
+      - --rm
+      - -v
+      - /tmp/.token-cache:/.token-cache
+      - -p
+      - 8000:8000
+      - quay.io/int128/kubelogin
+      - get-token
+      - --token-cache-dir=/.token-cache
+      - --listen-address=0.0.0.0:8000
+      - --oidc-issuer-url=ISSUER_URL
+      - --oidc-client-id=YOUR_CLIENT_ID
+      - --oidc-client-secret=YOUR_CLIENT_SECRET
+```
+
+Known limitations:
+
+- It cannot open the browser automatically.
+- The container port and listen port must be equal for consistency of the redirect URI.

e2e_test/credetial_plugin_test.go

@@ -1,84 +0,0 @@
-package e2e_test
-
-import (
-	"context"
-	"io/ioutil"
-	"os"
-	"testing"
-	"time"
-
-	"github.com/golang/mock/gomock"
-	"github.com/int128/kubelogin/e2e_test/idp"
-	"github.com/int128/kubelogin/e2e_test/idp/mock_idp"
-	"github.com/int128/kubelogin/e2e_test/localserver"
-	"github.com/int128/kubelogin/pkg/adaptors/credentialplugin"
-	"github.com/int128/kubelogin/pkg/adaptors/credentialplugin/mock_credentialplugin"
-	"github.com/int128/kubelogin/pkg/adaptors/logger/mock_logger"
-	"github.com/int128/kubelogin/pkg/di"
-	"github.com/int128/kubelogin/pkg/usecases/authentication"
-)
-
-// Run the integration tests of the credential plugin use-case.
-//
-// 1. Start the auth server.
-// 2. Run the Cmd.
-// 3. Open a request for the local server.
-// 4. Verify the output.
-//
-func TestCmd_Run_CredentialPlugin(t *testing.T) {
-	timeout := 1 * time.Second
-	cacheDir, err := ioutil.TempDir("", "kube")
-	if err != nil {
-		t.Fatalf("could not create a cache dir: %s", err)
-	}
-	defer func() {
-		if err := os.RemoveAll(cacheDir); err != nil {
-			t.Errorf("could not clean up the cache dir: %s", err)
-		}
-	}()
-
-	t.Run("Defaults", func(t *testing.T) {
-		t.Parallel()
-		ctx, cancel := context.WithTimeout(context.Background(), timeout)
-		defer cancel()
-		ctrl := gomock.NewController(t)
-		defer ctrl.Finish()
-
-		service := mock_idp.NewMockService(ctrl)
-		serverURL, server := localserver.Start(t, idp.NewHandler(t, service))
-		defer server.Shutdown(t, ctx)
-		var idToken string
-		setupMockIDPForCodeFlow(t, service, serverURL, "openid", &idToken)
-
-		credentialPluginInteraction := mock_credentialplugin.NewMockInterface(ctrl)
-		credentialPluginInteraction.EXPECT().
-			Write(gomock.Any()).
-			Do(func(out credentialplugin.Output) {
-				if out.Token != idToken {
-					t.Errorf("Token wants %s but %s", idToken, out.Token)
-				}
-				if out.Expiry != tokenExpiryFuture {
-					t.Errorf("Expiry wants %v but %v", tokenExpiryFuture, out.Expiry)
-				}
-			})
-
-		runGetTokenCmd(t, ctx,
-			openBrowserOnReadyFunc(t, ctx, nil),
-			credentialPluginInteraction,
-			"--skip-open-browser",
-			"--listen-port", "0",
-			"--token-cache-dir", cacheDir,
-			"--oidc-issuer-url", serverURL,
-			"--oidc-client-id", "kubernetes",
-		)
-	})
-}
-
-func runGetTokenCmd(t *testing.T, ctx context.Context, localServerReadyFunc authentication.LocalServerReadyFunc, interaction credentialplugin.Interface, args ...string) {
-	t.Helper()
-	cmd := di.NewCmdForHeadless(mock_logger.New(t), localServerReadyFunc, interaction)
-	exitCode := cmd.Run(ctx, append([]string{"kubelogin", "get-token", "--v=1"}, args...), "HEAD")
-	if exitCode != 0 {
-		t.Errorf("exit status wants 0 but %d", exitCode)
-	}
-}

e2e_test/idp/mock_idp/mock_service.go

@@ -1,122 +0,0 @@
-// Code generated by MockGen. DO NOT EDIT.
-// Source: github.com/int128/kubelogin/e2e_test/idp (interfaces: Service)
-
-// Package mock_idp is a generated GoMock package.
-package mock_idp
-
-import (
-	gomock "github.com/golang/mock/gomock"
-	idp "github.com/int128/kubelogin/e2e_test/idp"
-	reflect "reflect"
-)
-
-// MockService is a mock of Service interface
-type MockService struct {
-	ctrl     *gomock.Controller
-	recorder *MockServiceMockRecorder
-}
-
-// MockServiceMockRecorder is the mock recorder for MockService
-type MockServiceMockRecorder struct {
-	mock *MockService
-}
-
-// NewMockService creates a new mock instance
-func NewMockService(ctrl *gomock.Controller) *MockService {
-	mock := &MockService{ctrl: ctrl}
-	mock.recorder = &MockServiceMockRecorder{mock}
-	return mock
-}
-
-// EXPECT returns an object that allows the caller to indicate expected use
-func (m *MockService) EXPECT() *MockServiceMockRecorder {
-	return m.recorder
-}
-
-// AuthenticateCode mocks base method
-func (m *MockService) AuthenticateCode(arg0, arg1 string) (string, error) {
-	m.ctrl.T.Helper()
-	ret := m.ctrl.Call(m, "AuthenticateCode", arg0, arg1)
-	ret0, _ := ret[0].(string)
-	ret1, _ := ret[1].(error)
-	return ret0, ret1
-}
-
-// AuthenticateCode indicates an expected call of AuthenticateCode
-func (mr *MockServiceMockRecorder) AuthenticateCode(arg0, arg1 interface{}) *gomock.Call {
-	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "AuthenticateCode", reflect.TypeOf((*MockService)(nil).AuthenticateCode), arg0, arg1)
-}
-
-// AuthenticatePassword mocks base method
-func (m *MockService) AuthenticatePassword(arg0, arg1, arg2 string) (*idp.TokenResponse, error) {
-	m.ctrl.T.Helper()
-	ret := m.ctrl.Call(m, "AuthenticatePassword", arg0, arg1, arg2)
-	ret0, _ := ret[0].(*idp.TokenResponse)
-	ret1, _ := ret[1].(error)
-	return ret0, ret1
-}
-
-// AuthenticatePassword indicates an expected call of AuthenticatePassword
-func (mr *MockServiceMockRecorder) AuthenticatePassword(arg0, arg1, arg2 interface{}) *gomock.Call {
-	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "AuthenticatePassword", reflect.TypeOf((*MockService)(nil).AuthenticatePassword), arg0, arg1, arg2)
-}
-
-// Discovery mocks base method
-func (m *MockService) Discovery() *idp.DiscoveryResponse {
-	m.ctrl.T.Helper()
-	ret := m.ctrl.Call(m, "Discovery")
-	ret0, _ := ret[0].(*idp.DiscoveryResponse)
-	return ret0
-}
-
-// Discovery indicates an expected call of Discovery
-func (mr *MockServiceMockRecorder) Discovery() *gomock.Call {
-	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Discovery", reflect.TypeOf((*MockService)(nil).Discovery))
-}
-
-// Exchange mocks base method
-func (m *MockService) Exchange(arg0 string) (*idp.TokenResponse, error) {
-	m.ctrl.T.Helper()
-	ret := m.ctrl.Call(m, "Exchange", arg0)
-	ret0, _ := ret[0].(*idp.TokenResponse)
-	ret1, _ := ret[1].(error)
-	return ret0, ret1
-}
-
-// Exchange indicates an expected call of Exchange
-func (mr *MockServiceMockRecorder) Exchange(arg0 interface{}) *gomock.Call {
-	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Exchange", reflect.TypeOf((*MockService)(nil).Exchange), arg0)
-}
-
-// GetCertificates mocks base method
-func (m *MockService) GetCertificates() *idp.CertificatesResponse {
-	m.ctrl.T.Helper()
-	ret := m.ctrl.Call(m, "GetCertificates")
-	ret0, _ := ret[0].(*idp.CertificatesResponse)
-	return ret0
-}
-
-// GetCertificates indicates an expected call of GetCertificates
-func (mr *MockServiceMockRecorder) GetCertificates() *gomock.Call {
-	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "GetCertificates", reflect.TypeOf((*MockService)(nil).GetCertificates))
-}
-
-// Refresh mocks base method
-func (m *MockService) Refresh(arg0 string) (*idp.TokenResponse, error) {
-	m.ctrl.T.Helper()
-	ret := m.ctrl.Call(m, "Refresh", arg0)
-	ret0, _ := ret[0].(*idp.TokenResponse)
-	ret1, _ := ret[1].(error)
-	return ret0, ret1
-}
-
-// Refresh indicates an expected call of Refresh
-func (mr *MockServiceMockRecorder) Refresh(arg0 interface{}) *gomock.Call {
-	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Refresh", reflect.TypeOf((*MockService)(nil).Refresh), arg0)
-}

e2e_test/keys/keys.go

@@ -1,71 +0,0 @@
-package keys
-
-import (
-	"crypto/rsa"
-	"crypto/tls"
-	"crypto/x509"
-	"encoding/base64"
-	"encoding/pem"
-	"io/ioutil"
-
-	"golang.org/x/xerrors"
-)
-
-// TLSCACert is path to the CA certificate.
-// This should be generated by Makefile before test.
-const TLSCACert = "keys/testdata/ca.crt"
-
-// TLSCACertAsBase64 is a base64 encoded string of TLSCACert.
-var TLSCACertAsBase64 string
-
-// TLSCACertAsConfig is a TLS config including TLSCACert.
-var TLSCACertAsConfig = &tls.Config{RootCAs: x509.NewCertPool()}
-
-// TLSServerCert is path to the server certificate.
-// This should be generated by Makefile before test.
-const TLSServerCert = "keys/testdata/server.crt"
-
-// TLSServerKey is path to the server key.
-// This should be generated by Makefile before test.
-const TLSServerKey = "keys/testdata/server.key"
-
-// JWSKey is path to the key for signing ID tokens.
-const JWSKey = "keys/testdata/jws.key"
-
-// JWSKeyPair is the key pair loaded from JWSKey.
-var JWSKeyPair *rsa.PrivateKey
-
-func init() {
-	var err error
-	JWSKeyPair, err = readPrivateKey(JWSKey)
-	if err != nil {
-		panic(err)
-	}
-	b, err := ioutil.ReadFile(TLSCACert)
-	if err != nil {
-		panic(err)
-	}
-	TLSCACertAsBase64 = base64.StdEncoding.EncodeToString(b)
-	if !TLSCACertAsConfig.RootCAs.AppendCertsFromPEM(b) {
-		panic("could not append the CA cert")
-	}
-}
-
-func readPrivateKey(name string) (*rsa.PrivateKey, error) {
-	b, err := ioutil.ReadFile(name)
-	if err != nil {
-		return nil, xerrors.Errorf("could not read JWSKey: %w", err)
-	}
-	block, rest := pem.Decode(b)
-	if block == nil {
-		return nil, xerrors.New("could not decode PEM")
-	}
-	if len(rest) > 0 {
-		return nil, xerrors.New("PEM should contain single key but multiple keys")
-	}
-	k, err := x509.ParsePKCS1PrivateKey(block.Bytes)
-	if err != nil {
-		return nil, xerrors.Errorf("could not parse the key: %w", err)
-	}
-	return k, nil
-}

e2e_test/keys/testdata/.gitignore

@@ -1 +0,0 @@
-/CA

e2e_test/keys/testdata/Makefile

@@ -1,59 +0,0 @@
-EXPIRY := 3650
-
-all: ca.key ca.crt server.key server.crt jws.key
-
-.PHONY: clean
-clean:
-	-rm -v ca.* server.* jws.*
-
-ca.key:
-	openssl genrsa -out $@ 1024
-
-.INTERMEDIATE: ca.csr
-ca.csr: openssl.cnf ca.key
-	openssl req -config openssl.cnf \
-		-new \
-		-key ca.key \
-		-subj "/CN=Hello CA" \
-		-out $@
-	openssl req -noout -text -in $@
-
-ca.crt: ca.csr ca.key
-	openssl x509 \
-		-req \
-		-days $(EXPIRY) \
-		-signkey ca.key \
-		-in ca.csr \
-		-out $@
-	openssl x509 -text -in $@
-
-server.key:
-	openssl genrsa -out $@ 1024
-
-.INTERMEDIATE: server.csr
-server.csr: openssl.cnf server.key
-	openssl req -config openssl.cnf \
-		-new \
-		-key server.key \
-		-subj "/CN=localhost" \
-		-out $@
-	openssl req -noout -text -in $@
-
-server.crt: openssl.cnf server.csr ca.key ca.crt
-	rm -fr ./CA
-	mkdir -p ./CA
-	touch CA/index.txt
-	touch CA/index.txt.attr
-	echo 00 > CA/serial
-	openssl ca -config openssl.cnf \
-		-days $(EXPIRY) \
-		-extensions v3_req \
-		-batch \
-		-cert ca.crt \
-		-keyfile ca.key \
-		-in server.csr \
-		-out $@
-	openssl x509 -text -in $@
-
-jws.key:
-	openssl genrsa -out $@ 1024

e2e_test/keys/testdata/ca.crt

@@ -1,11 +0,0 @@
------BEGIN CERTIFICATE-----
-MIIBnTCCAQYCCQC/aR7GRyndljANBgkqhkiG9w0BAQUFADATMREwDwYDVQQDDAhI
-ZWxsbyBDQTAeFw0xOTA5MjUxNDQ0NTFaFw0yOTA5MjIxNDQ0NTFaMBMxETAPBgNV
-BAMMCEhlbGxvIENBMIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDnSTDsRx4U
-JmaTWHOAZasfN2O37wMcRez7LDM2qfQ8nlXnEAAZ4Pc51itOycWN1nclNVb489i9
-J8ALgRKzNumSkfl1sCgJoDds75AC3oRRCbhnEP3Lu4mysxyOtYZNsdST8GBCP0m4
-2tWa4W2ditpA44uU4x8opAX2qY919nVLNwIDAQABMA0GCSqGSIb3DQEBBQUAA4GB
-AE/gsgTC4jzYC3icZdhALJTe3JsZ7geN702dE95zSI5LXAzzHJ/j8wGmorQjrMs2
-iNPjVOdTU6cVWa1Ba29wWakVyVCUqDmDiWHaVhM/Qyyxo6mVlZGFwSnto3zq/h4y
-KMFJ8lUtFCYMrzo5wqgj2xOjVrN77F6F4XWZbMufh50G
------END CERTIFICATE-----

e2e_test/keys/testdata/ca.key

@@ -1,15 +0,0 @@
------BEGIN RSA PRIVATE KEY-----
-MIICXQIBAAKBgQDnSTDsRx4UJmaTWHOAZasfN2O37wMcRez7LDM2qfQ8nlXnEAAZ
-4Pc51itOycWN1nclNVb489i9J8ALgRKzNumSkfl1sCgJoDds75AC3oRRCbhnEP3L
-u4mysxyOtYZNsdST8GBCP0m42tWa4W2ditpA44uU4x8opAX2qY919nVLNwIDAQAB
-AoGAaYmTYm29QvKW4et9oPxDjpYG0bqlz7P0xFRR9kKtKTATAMHjWeu2xFR/JI+b
-rvJLIdZqHmWe5AmMb3NxZgfLonEB71ohaKQha1L8Vc7aoedRheJvqqaNr+ZxoCMO
-8xcjsaMYxLEVt0tg6XyKyEhi1/hOufFZ4BSng4oQbrpaNIkCQQD6hPEzzPZtMEEe
-eRdwTVUIStKFMQbRdwZ5Oc7pyDk2U+SFRJiqkBkqnmFekcf2UgbBQxem+GMhWNgE
-LItKy/wVAkEA7FiHxbzn2msaE3hZCWudtnXqmJNuPO0zJ5icXe2svwmwPfLA/rm9
-iazCuyzyK67J8IG9QgIjQFYXtQbMr2chGwJBAMm3dghBx0LQEf8Zfdf9TLSqmqyI
-d3b+IgZGl+cCQ58NGfp863ibIsiAUuK0+4/JKItBHLBjXF6jjPx/aYFGkqkCQH4w
-GnXCEYx1qJuCow87jR4xQQsrlC0lfC2E9t/TmWr6UkYRCWg3ZXJPcj0bl0Upcppd
-ut22ZHniPZAizEBOcMcCQQDnMEOxufxhMsx2NC8yON/noewLINqKcbkMsl6DjvJl
-+wLbQmzJ0j+uIBgdpsj4rWnEr7GxoL2eWG44QDUBco79
------END RSA PRIVATE KEY-----

e2e_test/keys/testdata/jws.key

@@ -1,15 +0,0 @@
------BEGIN RSA PRIVATE KEY-----
-MIICXwIBAAKBgQCZukkN1GxMlNXkpOZxCnvCF874/rn1sNKzO98fOwmBRPG2+m/c
-yqBY7t2L2nihqz3+GZTiHmzSrBzMAGPVW1qGmk9KYg3m7akz9SiCxdoUkgM9MCCp
-X/s8IhgtXkyoKFPcGdwHblDl/3aJG02b6TAQD8vTNQAKoKw7L0FST+pvRwIDAQAB
-AoGBAJT1fXR5MbfDQL+dSe6fSex5RYTgzzDTdldW3I1Wl487Tz0OzvYTIe0LCIJL
-4DhHxnpCL5IsCSbav8ytVA+ZxczHpEW6UxbalXt5UfgFu0joTrdoGxDcVWgUCW3J
-Olbln0lOP55wViKh509gt45Za3VxJrNul3khVfVj7qGG9cKBAkEAxwtT8LxwqTYF
-nqoeZvPp15JAqlgdk38ttJa4KEqvpBTSxNIXkL9T5gJ+irKZAzxlz/U7bhn5mw6E
-3xFiljOXpQJBAMW3XRFOjgNBXNjbt81wREF5LdZl9EI8cRMSH6xljt2uwSqw4EG3
-76gFvccUd+WnfspFQZVypSSD4pWzsAqh13sCQQCA9BLW5Y7r4ab0a2y08JNwaT1h
-3yKSO5QF6pu25uQyHpeKkj5YNcyKONV40EqXsRqZB10QcN2omlh1GJNRkm1NAkEA
-qV3lr4mnRUqcinfM/4MINT3k8h/sGUFFa5y+3SMyOtwURMm3kRRLi5c/dmYmPug4
-SHUDNU48AQeo9awzRShWOQJBAJdw+cfRgi4fo3HY33uZdFa1T9G+qTA2ijhco6O3
-8tOc0yOFEtPNXM87MsHGIQP3ZCLfIY1gs2O3WCTFbPxR4rc=
------END RSA PRIVATE KEY-----

e2e_test/keys/testdata/openssl.cnf

@@ -1,36 +0,0 @@
-[ ca ]
-default_ca      = CA_default
-
-[ CA_default ]
-dir             = ./CA
-certs           = $dir
-crl_dir         = $dir
-database        = $dir/index.txt
-new_certs_dir   = $dir
-default_md      = sha256
-policy          = policy_match
-serial          = $dir/serial
-
-[ policy_match ]
-countryName             = optional
-stateOrProvinceName     = optional
-organizationName        = optional
-organizationalUnitName  = optional
-commonName              = supplied
-emailAddress            = optional
-
-[ req ]
-distinguished_name	= req_distinguished_name
-req_extensions = v3_req
-x509_extensions = v3_ca
-
-[ req_distinguished_name ]
-commonName			= Common Name (e.g. server FQDN or YOUR name)
-
-[ v3_req ]
-basicConstraints = CA:FALSE
-keyUsage = nonRepudiation, digitalSignature, keyEncipherment
-subjectAltName = DNS:localhost
-
-[ v3_ca ]
-basicConstraints = CA:true

e2e_test/keys/testdata/server.crt

@@ -1,52 +0,0 @@
-Certificate:
-    Data:
-        Version: 3 (0x2)
-        Serial Number: 0 (0x0)
-    Signature Algorithm: sha256WithRSAEncryption
-        Issuer: CN=Hello CA
-        Validity
-            Not Before: Aug 18 06:00:06 2019 GMT
-            Not After : Aug 15 06:00:06 2029 GMT
-        Subject: CN=localhost
-        Subject Public Key Info:
-            Public Key Algorithm: rsaEncryption
-                Public-Key: (1024 bit)
-                Modulus:
-                    00:d6:4e:eb:3a:cb:25:f9:7e:92:22:f2:63:99:da:
-                    08:05:8b:a3:e7:d3:fd:71:3e:bd:da:c5:d5:63:b7:
-                    d3:7b:f8:cd:1a:2e:5c:a2:4f:48:98:c2:b4:da:e8:
-                    1e:d3:d7:8f:d8:ee:a9:70:d0:9d:4f:f4:8d:95:e5:
-                    8e:9a:71:b6:80:aa:0b:cb:28:1d:f6:0d:7e:aa:78:
-                    bf:30:e6:58:d7:6b:92:8f:19:1c:7d:95:f8:d5:2f:
-                    8c:58:49:98:88:05:50:88:80:a9:77:c4:16:b4:c1:
-                    00:45:1e:d3:d0:ed:98:4d:f7:a3:5d:f1:82:cb:a5:
-                    4d:19:64:4d:43:db:13:d4:17
-                Exponent: 65537 (0x10001)
-        X509v3 extensions:
-            X509v3 Basic Constraints: 
-                CA:FALSE
-            X509v3 Key Usage: 
-                Digital Signature, Non Repudiation, Key Encipherment
-            X509v3 Subject Alternative Name: 
-                DNS:localhost
-    Signature Algorithm: sha256WithRSAEncryption
-         5a:5c:5e:8b:de:82:86:f4:98:40:0e:cf:c5:51:fe:89:46:49:
-         f0:26:d2:a5:06:e3:91:43:c1:f8:b2:ad:b7:a1:23:13:1a:80:
-         45:00:51:70:b6:06:63:c6:a8:c8:22:5d:1b:00:e0:4a:8c:2e:
-         ce:b4:da:b1:89:8a:d2:d0:e3:eb:0f:16:34:45:a1:bd:64:5c:
-         48:41:8c:0a:bf:66:be:1c:a8:35:47:ce:b0:dc:c8:4f:5e:c1:
-         ec:ef:21:fb:45:55:95:e3:99:40:46:0b:6c:8a:b3:d5:f0:bf:
-         39:a4:ba:c4:d7:58:88:58:08:07:98:59:6e:ca:9c:08:e4:c4:
-         4f:db
------BEGIN CERTIFICATE-----
-MIIBzTCCATagAwIBAgIBADANBgkqhkiG9w0BAQsFADATMREwDwYDVQQDDAhIZWxs
-byBDQTAeFw0xOTA4MTgwNjAwMDZaFw0yOTA4MTUwNjAwMDZaMBQxEjAQBgNVBAMM
-CWxvY2FsaG9zdDCBnzANBgkqhkiG9w0BAQEFAAOBjQAwgYkCgYEA1k7rOssl+X6S
-IvJjmdoIBYuj59P9cT692sXVY7fTe/jNGi5cok9ImMK02uge09eP2O6pcNCdT/SN
-leWOmnG2gKoLyygd9g1+qni/MOZY12uSjxkcfZX41S+MWEmYiAVQiICpd8QWtMEA
-RR7T0O2YTfejXfGCy6VNGWRNQ9sT1BcCAwEAAaMwMC4wCQYDVR0TBAIwADALBgNV
-HQ8EBAMCBeAwFAYDVR0RBA0wC4IJbG9jYWxob3N0MA0GCSqGSIb3DQEBCwUAA4GB
-AFpcXovegob0mEAOz8VR/olGSfAm0qUG45FDwfiyrbehIxMagEUAUXC2BmPGqMgi
-XRsA4EqMLs602rGJitLQ4+sPFjRFob1kXEhBjAq/Zr4cqDVHzrDcyE9ewezvIftF
-VZXjmUBGC2yKs9XwvzmkusTXWIhYCAeYWW7KnAjkxE/b
------END CERTIFICATE-----

e2e_test/keys/testdata/server.key

@@ -1,15 +0,0 @@
------BEGIN RSA PRIVATE KEY-----
-MIICXgIBAAKBgQDWTus6yyX5fpIi8mOZ2ggFi6Pn0/1xPr3axdVjt9N7+M0aLlyi
-T0iYwrTa6B7T14/Y7qlw0J1P9I2V5Y6acbaAqgvLKB32DX6qeL8w5ljXa5KPGRx9
-lfjVL4xYSZiIBVCIgKl3xBa0wQBFHtPQ7ZhN96Nd8YLLpU0ZZE1D2xPUFwIDAQAB
-AoGBAJhNR7Dl1JwFzndViWE6aP7/6UEFEBWeADDs7aTLbFmrTJ+xmRWkgLRHk14L
-HnVwuYLywaoyJ8o9wy1nEbxC2e4zWZ94d351MQf3/komCXDBzEsktfAcNsAFnMmS
-HZuGXfhi0FYWoftpIGxUmEBmQRcq0ctycbLves6TY3y+oajpAkEA8UHmSr/zsM3E
-XQXPp2BCAvRrTH/njk4R0jwB29Bi89gt/XDD4uvfWbHw7TZxnZuCpWisnxpMPIwa
-1rjqIQmhEwJBAONncQUOxwYCIuvraIhV0QtkIUa+YpTvAxP8ZNXx+agtHmHG2TTf
-kGv2YddvjxXZItN/FZOzUGm9OptaeLRTpW0CQHO8CEzNnoqve0agtgf2LlSaiiqt
-pRhoLTZsYPvhEMcnapCNGvtt6bxul0REfOZ9poPRHhZJGE9naqydEnv80Y8CQQC3
-pxLfws95SsBpR/VkJepuCK/XMmrrXRxfR7coEgROjiG7VZyV1vgMOS9Ljg1A19wI
-cto6LtcCjpCGZsqU1/kBAkEAv2tXBts3vuIjguZNMz7KLWmu3zG2SQRaqdEZwL+R
-DQmD5tbI6gEtd5OmgmSiW8A4mpfgFYvG7Um2fwi7TTXtSA==
------END RSA PRIVATE KEY-----

e2e_test/standalone_test.go

@@ -1,357 +0,0 @@
-package e2e_test
-
-import (
-	"context"
-	"crypto/tls"
-	"net/http"
-	"os"
-	"testing"
-	"time"
-
-	"github.com/dgrijalva/jwt-go"
-	"github.com/golang/mock/gomock"
-	"github.com/int128/kubelogin/e2e_test/idp"
-	"github.com/int128/kubelogin/e2e_test/idp/mock_idp"
-	"github.com/int128/kubelogin/e2e_test/keys"
-	"github.com/int128/kubelogin/e2e_test/kubeconfig"
-	"github.com/int128/kubelogin/e2e_test/localserver"
-	"github.com/int128/kubelogin/pkg/adaptors/logger/mock_logger"
-	"github.com/int128/kubelogin/pkg/di"
-	"github.com/int128/kubelogin/pkg/usecases/authentication"
-)
-
-var (
-	tokenExpiryFuture = time.Now().Add(time.Hour).Round(time.Second)
-	tokenExpiryPast   = time.Now().Add(-time.Hour).Round(time.Second)
-)
-
-// Run the integration tests of the Login use-case.
-//
-// 1. Start the auth server.
-// 2. Run the Cmd.
-// 3. Open a request for the local server.
-// 4. Verify the kubeconfig.
-//
-func TestCmd_Run_Standalone(t *testing.T) {
-	timeout := 5 * time.Second
-
-	type testParameter struct {
-		startServer                       func(t *testing.T, h http.Handler) (string, localserver.Shutdowner)
-		kubeconfigIDPCertificateAuthority string
-		clientTLSConfig                   *tls.Config
-	}
-
-	testParameters := map[string]testParameter{
-		"NoTLS": {
-			startServer: localserver.Start,
-		},
-		"CACert": {
-			startServer: func(t *testing.T, h http.Handler) (string, localserver.Shutdowner) {
-				return localserver.StartTLS(t, keys.TLSServerCert, keys.TLSServerKey, h)
-			},
-			kubeconfigIDPCertificateAuthority: keys.TLSCACert,
-			clientTLSConfig:                   keys.TLSCACertAsConfig,
-		},
-	}
-
-	runTest := func(t *testing.T, p testParameter) {
-		t.Run("Defaults", func(t *testing.T) {
-			t.Parallel()
-			ctx, cancel := context.WithTimeout(context.TODO(), timeout)
-			defer cancel()
-			ctrl := gomock.NewController(t)
-			defer ctrl.Finish()
-
-			service := mock_idp.NewMockService(ctrl)
-			serverURL, server := p.startServer(t, idp.NewHandler(t, service))
-			defer server.Shutdown(t, ctx)
-			var idToken string
-			setupMockIDPForCodeFlow(t, service, serverURL, "openid", &idToken)
-
-			kubeConfigFilename := kubeconfig.Create(t, &kubeconfig.Values{
-				Issuer:                  serverURL,
-				IDPCertificateAuthority: p.kubeconfigIDPCertificateAuthority,
-			})
-			defer os.Remove(kubeConfigFilename)
-
-			runCmd(t, ctx,
-				openBrowserOnReadyFunc(t, ctx, p.clientTLSConfig),
-				"--kubeconfig", kubeConfigFilename, "--skip-open-browser", "--listen-port", "0")
-			kubeconfig.Verify(t, kubeConfigFilename, kubeconfig.AuthProviderConfig{
-				IDToken:      idToken,
-				RefreshToken: "YOUR_REFRESH_TOKEN",
-			})
-		})
-
-		t.Run("ResourceOwnerPasswordCredentials", func(t *testing.T) {
-			t.Parallel()
-			ctx, cancel := context.WithTimeout(context.TODO(), timeout)
-			defer cancel()
-			ctrl := gomock.NewController(t)
-			defer ctrl.Finish()
-
-			service := mock_idp.NewMockService(ctrl)
-			serverURL, server := p.startServer(t, idp.NewHandler(t, service))
-			defer server.Shutdown(t, ctx)
-			idToken := newIDToken(t, serverURL, "", tokenExpiryFuture)
-			service.EXPECT().Discovery().Return(idp.NewDiscoveryResponse(serverURL))
-			service.EXPECT().GetCertificates().Return(idp.NewCertificatesResponse(keys.JWSKeyPair))
-			service.EXPECT().AuthenticatePassword("USER", "PASS", "openid").
-				Return(idp.NewTokenResponse(idToken, "YOUR_REFRESH_TOKEN"), nil)
-
-			kubeConfigFilename := kubeconfig.Create(t, &kubeconfig.Values{
-				Issuer:                  serverURL,
-				IDPCertificateAuthority: p.kubeconfigIDPCertificateAuthority,
-			})
-			defer os.Remove(kubeConfigFilename)
-
-			runCmd(t, ctx,
-				openBrowserOnReadyFunc(t, ctx, p.clientTLSConfig),
-				"--kubeconfig", kubeConfigFilename, "--skip-open-browser", "--username", "USER", "--password", "PASS")
-			kubeconfig.Verify(t, kubeConfigFilename, kubeconfig.AuthProviderConfig{
-				IDToken:      idToken,
-				RefreshToken: "YOUR_REFRESH_TOKEN",
-			})
-		})
-
-		t.Run("HasValidToken", func(t *testing.T) {
-			t.Parallel()
-			ctx, cancel := context.WithTimeout(context.TODO(), timeout)
-			defer cancel()
-			ctrl := gomock.NewController(t)
-			defer ctrl.Finish()
-
-			service := mock_idp.NewMockService(ctrl)
-			serverURL, server := p.startServer(t, idp.NewHandler(t, service))
-			defer server.Shutdown(t, ctx)
-			idToken := newIDToken(t, serverURL, "YOUR_NONCE", tokenExpiryFuture)
-
-			kubeConfigFilename := kubeconfig.Create(t, &kubeconfig.Values{
-				Issuer:                  serverURL,
-				IDToken:                 idToken,
-				RefreshToken:            "YOUR_REFRESH_TOKEN",
-				IDPCertificateAuthority: p.kubeconfigIDPCertificateAuthority,
-			})
-			defer os.Remove(kubeConfigFilename)
-
-			runCmd(t, ctx,
-				openBrowserOnReadyFunc(t, ctx, p.clientTLSConfig),
-				"--kubeconfig", kubeConfigFilename, "--skip-open-browser")
-			kubeconfig.Verify(t, kubeConfigFilename, kubeconfig.AuthProviderConfig{
-				IDToken:      idToken,
-				RefreshToken: "YOUR_REFRESH_TOKEN",
-			})
-		})
-
-		t.Run("HasValidRefreshToken", func(t *testing.T) {
-			t.Parallel()
-			ctx, cancel := context.WithTimeout(context.TODO(), timeout)
-			defer cancel()
-			ctrl := gomock.NewController(t)
-			defer ctrl.Finish()
-
-			service := mock_idp.NewMockService(ctrl)
-			serverURL, server := p.startServer(t, idp.NewHandler(t, service))
-			defer server.Shutdown(t, ctx)
-			idToken := newIDToken(t, serverURL, "YOUR_NONCE", tokenExpiryFuture)
-			service.EXPECT().Discovery().Return(idp.NewDiscoveryResponse(serverURL))
-			service.EXPECT().GetCertificates().Return(idp.NewCertificatesResponse(keys.JWSKeyPair))
-			service.EXPECT().Refresh("VALID_REFRESH_TOKEN").
-				Return(idp.NewTokenResponse(idToken, "NEW_REFRESH_TOKEN"), nil)
-
-			kubeConfigFilename := kubeconfig.Create(t, &kubeconfig.Values{
-				Issuer:                  serverURL,
-				IDToken:                 newIDToken(t, serverURL, "YOUR_NONCE", tokenExpiryPast), // expired
-				RefreshToken:            "VALID_REFRESH_TOKEN",
-				IDPCertificateAuthority: p.kubeconfigIDPCertificateAuthority,
-			})
-			defer os.Remove(kubeConfigFilename)
-
-			runCmd(t, ctx,
-				openBrowserOnReadyFunc(t, ctx, p.clientTLSConfig),
-				"--kubeconfig", kubeConfigFilename, "--skip-open-browser")
-			kubeconfig.Verify(t, kubeConfigFilename, kubeconfig.AuthProviderConfig{
-				IDToken:      idToken,
-				RefreshToken: "NEW_REFRESH_TOKEN",
-			})
-		})
-
-		t.Run("HasExpiredRefreshToken", func(t *testing.T) {
-			t.Parallel()
-			ctx, cancel := context.WithTimeout(context.TODO(), timeout)
-			defer cancel()
-			ctrl := gomock.NewController(t)
-			defer ctrl.Finish()
-
-			service := mock_idp.NewMockService(ctrl)
-			serverURL, server := p.startServer(t, idp.NewHandler(t, service))
-			defer server.Shutdown(t, ctx)
-			var idToken string
-			setupMockIDPForCodeFlow(t, service, serverURL, "openid", &idToken)
-			service.EXPECT().Refresh("EXPIRED_REFRESH_TOKEN").
-				Return(nil, &idp.ErrorResponse{Code: "invalid_request", Description: "token has expired"}).
-				MaxTimes(2) // package oauth2 will retry refreshing the token
-
-			kubeConfigFilename := kubeconfig.Create(t, &kubeconfig.Values{
-				Issuer:                  serverURL,
-				IDToken:                 newIDToken(t, serverURL, "YOUR_NONCE", tokenExpiryPast), // expired
-				RefreshToken:            "EXPIRED_REFRESH_TOKEN",
-				IDPCertificateAuthority: p.kubeconfigIDPCertificateAuthority,
-			})
-			defer os.Remove(kubeConfigFilename)
-
-			runCmd(t, ctx,
-				openBrowserOnReadyFunc(t, ctx, p.clientTLSConfig),
-				"--kubeconfig", kubeConfigFilename, "--skip-open-browser")
-			kubeconfig.Verify(t, kubeConfigFilename, kubeconfig.AuthProviderConfig{
-				IDToken:      idToken,
-				RefreshToken: "YOUR_REFRESH_TOKEN",
-			})
-		})
-	}
-
-	for name, p := range testParameters {
-		t.Run(name, func(t *testing.T) {
-			runTest(t, p)
-		})
-	}
-
-	t.Run("env:KUBECONFIG", func(t *testing.T) {
-		t.Parallel()
-		ctx, cancel := context.WithTimeout(context.TODO(), timeout)
-		defer cancel()
-		ctrl := gomock.NewController(t)
-		defer ctrl.Finish()
-
-		service := mock_idp.NewMockService(ctrl)
-		serverURL, server := localserver.Start(t, idp.NewHandler(t, service))
-		defer server.Shutdown(t, ctx)
-		var idToken string
-		setupMockIDPForCodeFlow(t, service, serverURL, "openid", &idToken)
-
-		kubeConfigFilename := kubeconfig.Create(t, &kubeconfig.Values{Issuer: serverURL})
-		defer os.Remove(kubeConfigFilename)
-		setenv(t, "KUBECONFIG", kubeConfigFilename+string(os.PathListSeparator)+"kubeconfig/testdata/dummy.yaml")
-		defer unsetenv(t, "KUBECONFIG")
-
-		runCmd(t, ctx,
-			openBrowserOnReadyFunc(t, ctx, nil),
-			"--skip-open-browser", "--listen-port", "0")
-		kubeconfig.Verify(t, kubeConfigFilename, kubeconfig.AuthProviderConfig{
-			IDToken:      idToken,
-			RefreshToken: "YOUR_REFRESH_TOKEN",
-		})
-	})
-
-	t.Run("ExtraScopes", func(t *testing.T) {
-		t.Parallel()
-		ctx, cancel := context.WithTimeout(context.TODO(), timeout)
-		defer cancel()
-		ctrl := gomock.NewController(t)
-		defer ctrl.Finish()
-
-		service := mock_idp.NewMockService(ctrl)
-		serverURL, server := localserver.Start(t, idp.NewHandler(t, service))
-		defer server.Shutdown(t, ctx)
-		var idToken string
-		setupMockIDPForCodeFlow(t, service, serverURL, "profile groups openid", &idToken)
-
-		kubeConfigFilename := kubeconfig.Create(t, &kubeconfig.Values{
-			Issuer:      serverURL,
-			ExtraScopes: "profile,groups",
-		})
-		defer os.Remove(kubeConfigFilename)
-
-		runCmd(t, ctx,
-			openBrowserOnReadyFunc(t, ctx, nil),
-			"--kubeconfig", kubeConfigFilename, "--skip-open-browser", "--listen-port", "0")
-		kubeconfig.Verify(t, kubeConfigFilename, kubeconfig.AuthProviderConfig{
-			IDToken:      idToken,
-			RefreshToken: "YOUR_REFRESH_TOKEN",
-		})
-	})
-}
-
-func newIDToken(t *testing.T, issuer, nonce string, expiry time.Time) string {
-	t.Helper()
-	var claims struct {
-		jwt.StandardClaims
-		Nonce  string   `json:"nonce"`
-		Groups []string `json:"groups"`
-	}
-	claims.StandardClaims = jwt.StandardClaims{
-		Issuer:    issuer,
-		Audience:  "kubernetes",
-		Subject:   "SUBJECT",
-		IssuedAt:  time.Now().Unix(),
-		ExpiresAt: expiry.Unix(),
-	}
-	claims.Nonce = nonce
-	claims.Groups = []string{"admin", "users"}
-	token := jwt.NewWithClaims(jwt.SigningMethodRS256, claims)
-	s, err := token.SignedString(keys.JWSKeyPair)
-	if err != nil {
-		t.Fatalf("Could not sign the claims: %s", err)
-	}
-	return s
-}
-
-func setupMockIDPForCodeFlow(t *testing.T, service *mock_idp.MockService, serverURL, scope string, idToken *string) {
-	var nonce string
-	service.EXPECT().Discovery().Return(idp.NewDiscoveryResponse(serverURL))
-	service.EXPECT().GetCertificates().Return(idp.NewCertificatesResponse(keys.JWSKeyPair))
-	service.EXPECT().AuthenticateCode(scope, gomock.Any()).
-		DoAndReturn(func(_, gotNonce string) (string, error) {
-			nonce = gotNonce
-			return "YOUR_AUTH_CODE", nil
-		})
-	service.EXPECT().Exchange("YOUR_AUTH_CODE").
-		DoAndReturn(func(string) (*idp.TokenResponse, error) {
-			*idToken = newIDToken(t, serverURL, nonce, tokenExpiryFuture)
-			return idp.NewTokenResponse(*idToken, "YOUR_REFRESH_TOKEN"), nil
-		})
-}
-
-func runCmd(t *testing.T, ctx context.Context, localServerReadyFunc authentication.LocalServerReadyFunc, args ...string) {
-	t.Helper()
-	cmd := di.NewCmdForHeadless(mock_logger.New(t), localServerReadyFunc, nil)
-	exitCode := cmd.Run(ctx, append([]string{"kubelogin", "--v=1"}, args...), "HEAD")
-	if exitCode != 0 {
-		t.Errorf("exit status wants 0 but %d", exitCode)
-	}
-}
-
-func openBrowserOnReadyFunc(t *testing.T, ctx context.Context, clientConfig *tls.Config) authentication.LocalServerReadyFunc {
-	return func(url string) {
-		client := http.Client{Transport: &http.Transport{TLSClientConfig: clientConfig}}
-		req, err := http.NewRequest("GET", url, nil)
-		if err != nil {
-			t.Errorf("could not create a request: %s", err)
-			return
-		}
-		req = req.WithContext(ctx)
-		resp, err := client.Do(req)
-		if err != nil {
-			t.Errorf("could not send a request: %s", err)
-			return
-		}
-		defer resp.Body.Close()
-		if resp.StatusCode != 200 {
-			t.Errorf("StatusCode wants 200 but %d", resp.StatusCode)
-		}
-	}
-}
-
-func setenv(t *testing.T, key, value string) {
-	t.Helper()
-	if err := os.Setenv(key, value); err != nil {
-		t.Fatalf("Could not set the env var %s=%s: %s", key, value, err)
-	}
-}
-
-func unsetenv(t *testing.T, key string) {
-	t.Helper()
-	if err := os.Unsetenv(key); err != nil {
-		t.Fatalf("Could not unset the env var %s: %s", key, err)
-	}
-}

go.mod

@@ -3,23 +3,25 @@ module github.com/int128/kubelogin
 go 1.12
 
 require (
-	github.com/coreos/go-oidc v2.1.0+incompatible
-	github.com/dgrijalva/jwt-go v0.0.0-20160705203006-01aeca54ebda
-	github.com/go-test/deep v1.0.4
-	github.com/golang/mock v1.3.1
-	github.com/google/wire v0.3.0
-	github.com/int128/oauth2cli v1.8.1
+	github.com/chromedp/chromedp v0.5.3
+	github.com/coreos/go-oidc v2.2.1+incompatible
+	github.com/dgrijalva/jwt-go v3.2.0+incompatible
+	github.com/golang/mock v1.4.4
+	github.com/google/go-cmp v0.5.2
+	github.com/google/wire v0.4.0
+	github.com/int128/oauth2cli v1.13.0
 	github.com/pkg/browser v0.0.0-20180916011732-0a3d74bf9ce4
 	github.com/pquerna/cachecontrol v0.0.0-20180517163645-1555304b9b35 // indirect
-	github.com/spf13/cobra v0.0.5
+	github.com/spf13/cobra v1.0.0
 	github.com/spf13/pflag v1.0.5
-	golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2
-	golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45
-	golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e
-	golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7
+	golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a
+	golang.org/x/oauth2 v0.0.0-20200902213428-5d25da1a8d43
+	golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208
+	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1
+	google.golang.org/protobuf v1.25.0 // indirect
 	gopkg.in/square/go-jose.v2 v2.3.1 // indirect
-	gopkg.in/yaml.v2 v2.2.5
-	k8s.io/apimachinery v0.0.0-20190612205821-1799e75a0719
-	k8s.io/client-go v0.0.0-20190620085101-78d2af792bab
-	k8s.io/klog v0.4.0
+	gopkg.in/yaml.v2 v2.3.0
+	k8s.io/apimachinery v0.19.0
+	k8s.io/client-go v0.19.0
+	k8s.io/klog v1.0.0
 )

go.sum

@@ -1,168 +1,628 @@
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-github.com/Azure/go-autorest v11.1.2+incompatible/go.mod h1:r+4oMnoxhatjLLJ6zxSWATqVooLgysK6ZNox3g/xq24=
+cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
+cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
+cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
+cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc=
+cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0=
+cloud.google.com/go v0.50.0/go.mod h1:r9sluTvynVuxRIOHXQEHMFffphuXHOMZMycpNR5e6To=
+cloud.google.com/go v0.51.0/go.mod h1:hWtGJ6gnXH+KgDv+V0zFGDvpi07n3z8ZNj3T1RW0Gcw=
+cloud.google.com/go v0.52.0/go.mod h1:pXajvRH/6o3+F9jDHZWQ5PbGhn+o8w9qiu/CffaVdO4=
+cloud.google.com/go v0.53.0/go.mod h1:fp/UouUEsRkN6ryDKNW/Upv/JBKnv6WDthjR6+vze6M=
+cloud.google.com/go v0.54.0/go.mod h1:1rq2OEkV3YMf6n/9ZvGWI3GWw0VoqH/1x2nd8Is/bPc=
+cloud.google.com/go v0.56.0/go.mod h1:jr7tqZxxKOVYizybht9+26Z/gUq7tiRzu+ACVAMbKVk=
+cloud.google.com/go v0.57.0/go.mod h1:oXiQ6Rzq3RAkkY7N6t3TcE6jE+CIBBbA36lwQ1JyzZs=
+cloud.google.com/go v0.62.0/go.mod h1:jmCYTdRCQuc1PHIIJ/maLInMho30T/Y0M4hTdTShOYc=
+cloud.google.com/go v0.65.0/go.mod h1:O5N8zS7uWy9vkA9vayVHs65eM1ubvY4h553ofrNHObY=
+cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o=
+cloud.google.com/go/bigquery v1.3.0/go.mod h1:PjpwJnslEMmckchkHFfq+HTD2DmtT67aNFKH1/VBDHE=
+cloud.google.com/go/bigquery v1.4.0/go.mod h1:S8dzgnTigyfTmLBfrtrhyYhwRxG72rYxvftPBK2Dvzc=
+cloud.google.com/go/bigquery v1.5.0/go.mod h1:snEHRnqQbz117VIFhE8bmtwIDY80NLUZUMb4Nv6dBIg=
+cloud.google.com/go/bigquery v1.7.0/go.mod h1://okPTzCYNXSlb24MZs83e2Do+h+VXtc4gLoIoXIAPc=
+cloud.google.com/go/bigquery v1.8.0/go.mod h1:J5hqkt3O0uAFnINi6JXValWIb1v0goeZM77hZzJN/fQ=
+cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
+cloud.google.com/go/datastore v1.1.0/go.mod h1:umbIZjpQpHh4hmRpGhH4tLFup+FVzqBi1b3c64qFpCk=
+cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I=
+cloud.google.com/go/pubsub v1.1.0/go.mod h1:EwwdRX2sKPjnvnqCa270oGRyludottCI76h+R3AArQw=
+cloud.google.com/go/pubsub v1.2.0/go.mod h1:jhfEVHT8odbXTkndysNHCcx0awwzvfOlguIAii9o8iA=
+cloud.google.com/go/pubsub v1.3.1/go.mod h1:i+ucay31+CNRpDW4Lu78I4xXG+O1r/MAHgjpRVR+TSU=
+cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw=
+cloud.google.com/go/storage v1.5.0/go.mod h1:tpKbwo567HUNpVclU5sGELwQWBDZ8gh0ZeosJ0Rtdos=
+cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohlUTyfDhBk=
+cloud.google.com/go/storage v1.8.0/go.mod h1:Wv1Oy7z6Yz3DshWRJFhqM/UCfaWIRTdp0RXyy7KQOVs=
+cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9ullr3+Kg0=
+dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
+github.com/Azure/go-autorest/autorest v0.9.0/go.mod h1:xyHB1BMZT0cuDHU7I0+g046+BFDTQ8rEZB0s4Yfa6bI=
+github.com/Azure/go-autorest/autorest v0.9.6/go.mod h1:/FALq9T/kS7b5J5qsQ+RSTUdAmGFqi0vUdVNNx8q630=
+github.com/Azure/go-autorest/autorest/adal v0.5.0/go.mod h1:8Z9fGy2MpX0PvDjB1pEgQTmVqjGhiHBW7RJJEciWzS0=
+github.com/Azure/go-autorest/autorest/adal v0.8.2/go.mod h1:ZjhuQClTqx435SRJ2iMlOxPYt3d2C/T/7TiQCVZSn3Q=
+github.com/Azure/go-autorest/autorest/date v0.1.0/go.mod h1:plvfp3oPSKwf2DNjlBjWF/7vwR+cUD/ELuzDCXwHUVA=
+github.com/Azure/go-autorest/autorest/date v0.2.0/go.mod h1:vcORJHLJEh643/Ioh9+vPmf1Ij9AEBM5FuBIXLmIy0g=
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integration_test/credetial_plugin_test.go

@@ -0,0 +1,420 @@
+package integration_test
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"io"
+	"io/ioutil"
+	"os"
+	"testing"
+	"time"
+
+	"github.com/google/go-cmp/cmp"
+	"github.com/int128/kubelogin/integration_test/httpdriver"
+	"github.com/int128/kubelogin/integration_test/keypair"
+	"github.com/int128/kubelogin/integration_test/oidcserver"
+	"github.com/int128/kubelogin/pkg/adaptors/browser"
+	"github.com/int128/kubelogin/pkg/di"
+	"github.com/int128/kubelogin/pkg/testing/clock"
+	"github.com/int128/kubelogin/pkg/testing/logger"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	clientauthenticationv1beta1 "k8s.io/client-go/pkg/apis/clientauthentication/v1beta1"
+)
+
+// Run the integration tests of the credential plugin use-case.
+//
+// 1. Start the auth server.
+// 2. Run the Cmd.
+// 3. Open a request for the local server.
+// 4. Verify the output.
+//
+func TestCredentialPlugin(t *testing.T) {
+	timeout := 3 * time.Second
+	now := time.Date(2020, 1, 1, 0, 0, 0, 0, time.UTC)
+	tokenCacheDir, err := ioutil.TempDir("", "kube")
+	if err != nil {
+		t.Fatalf("could not create a cache dir: %s", err)
+	}
+	defer func() {
+		if err := os.RemoveAll(tokenCacheDir); err != nil {
+			t.Errorf("could not clean up the cache dir: %s", err)
+		}
+	}()
+
+	for name, tc := range map[string]struct {
+		keyPair keypair.KeyPair
+		args    []string
+	}{
+		"NoTLS": {},
+		"TLS": {
+			keyPair: keypair.Server,
+			args:    []string{"--certificate-authority", keypair.Server.CACertPath},
+		},
+	} {
+		httpDriverOption := httpdriver.Option{
+			TLSConfig:    tc.keyPair.TLSConfig,
+			BodyContains: "Authenticated",
+		}
+
+		t.Run(name, func(t *testing.T) {
+			t.Run("AuthCode", func(t *testing.T) {
+				t.Parallel()
+				ctx, cancel := context.WithTimeout(context.TODO(), timeout)
+				defer cancel()
+				sv := oidcserver.New(t, tc.keyPair, oidcserver.Config{
+					Want: oidcserver.Want{
+						Scope:             "openid",
+						RedirectURIPrefix: "http://localhost:",
+					},
+					Response: oidcserver.Response{
+						IDTokenExpiry: now.Add(time.Hour),
+					},
+				})
+				defer sv.Shutdown(t, ctx)
+				var stdout bytes.Buffer
+				runGetToken(t, ctx, getTokenConfig{
+					tokenCacheDir: tokenCacheDir,
+					issuerURL:     sv.IssuerURL(),
+					httpDriver:    httpdriver.New(ctx, t, httpDriverOption),
+					now:           now,
+					stdout:        &stdout,
+					args:          tc.args,
+				})
+				assertCredentialPluginStdout(t, &stdout, sv.LastTokenResponse().IDToken, now.Add(time.Hour))
+			})
+
+			t.Run("ROPC", func(t *testing.T) {
+				t.Parallel()
+				ctx, cancel := context.WithTimeout(context.TODO(), timeout)
+				defer cancel()
+				sv := oidcserver.New(t, tc.keyPair, oidcserver.Config{
+					Want: oidcserver.Want{
+						Scope:             "openid",
+						RedirectURIPrefix: "http://localhost:",
+						Username:          "USER1",
+						Password:          "PASS1",
+					},
+					Response: oidcserver.Response{
+						IDTokenExpiry: now.Add(time.Hour),
+					},
+				})
+				defer sv.Shutdown(t, ctx)
+				var stdout bytes.Buffer
+				runGetToken(t, ctx, getTokenConfig{
+					tokenCacheDir: tokenCacheDir,
+					issuerURL:     sv.IssuerURL(),
+					httpDriver:    httpdriver.Zero(t),
+					now:           now,
+					stdout:        &stdout,
+					args: append([]string{
+						"--username", "USER1",
+						"--password", "PASS1",
+					}, tc.args...),
+				})
+				assertCredentialPluginStdout(t, &stdout, sv.LastTokenResponse().IDToken, now.Add(time.Hour))
+			})
+
+			t.Run("TokenCacheLifecycle", func(t *testing.T) {
+				t.Parallel()
+				ctx, cancel := context.WithTimeout(context.TODO(), timeout)
+				defer cancel()
+				sv := oidcserver.New(t, tc.keyPair, oidcserver.Config{})
+				defer sv.Shutdown(t, ctx)
+
+				t.Run("NoCache", func(t *testing.T) {
+					sv.SetConfig(oidcserver.Config{
+						Want: oidcserver.Want{
+							Scope:             "openid",
+							RedirectURIPrefix: "http://localhost:",
+						},
+						Response: oidcserver.Response{
+							IDTokenExpiry: now.Add(time.Hour),
+							RefreshToken:  "REFRESH_TOKEN_1",
+						},
+					})
+					var stdout bytes.Buffer
+					runGetToken(t, ctx, getTokenConfig{
+						tokenCacheDir: tokenCacheDir,
+						issuerURL:     sv.IssuerURL(),
+						httpDriver:    httpdriver.New(ctx, t, httpDriverOption),
+						now:           now,
+						stdout:        &stdout,
+						args:          tc.args,
+					})
+					assertCredentialPluginStdout(t, &stdout, sv.LastTokenResponse().IDToken, now.Add(time.Hour))
+				})
+				t.Run("Valid", func(t *testing.T) {
+					sv.SetConfig(oidcserver.Config{})
+					var stdout bytes.Buffer
+					runGetToken(t, ctx, getTokenConfig{
+						tokenCacheDir: tokenCacheDir,
+						issuerURL:     sv.IssuerURL(),
+						httpDriver:    httpdriver.Zero(t),
+						now:           now,
+						stdout:        &stdout,
+						args:          tc.args,
+					})
+					assertCredentialPluginStdout(t, &stdout, sv.LastTokenResponse().IDToken, now.Add(time.Hour))
+				})
+				t.Run("Refresh", func(t *testing.T) {
+					sv.SetConfig(oidcserver.Config{
+						Want: oidcserver.Want{
+							Scope:             "openid",
+							RedirectURIPrefix: "http://localhost:",
+							RefreshToken:      "REFRESH_TOKEN_1",
+						},
+						Response: oidcserver.Response{
+							IDTokenExpiry: now.Add(3 * time.Hour),
+							RefreshToken:  "REFRESH_TOKEN_2",
+						},
+					})
+					var stdout bytes.Buffer
+					runGetToken(t, ctx, getTokenConfig{
+						tokenCacheDir: tokenCacheDir,
+						issuerURL:     sv.IssuerURL(),
+						httpDriver:    httpdriver.New(ctx, t, httpDriverOption),
+						now:           now.Add(2 * time.Hour),
+						stdout:        &stdout,
+						args:          tc.args,
+					})
+					assertCredentialPluginStdout(t, &stdout, sv.LastTokenResponse().IDToken, now.Add(3*time.Hour))
+				})
+				t.Run("RefreshAgain", func(t *testing.T) {
+					sv.SetConfig(oidcserver.Config{
+						Want: oidcserver.Want{
+							Scope:             "openid",
+							RedirectURIPrefix: "http://localhost:",
+							RefreshToken:      "REFRESH_TOKEN_2",
+						},
+						Response: oidcserver.Response{
+							IDTokenExpiry: now.Add(5 * time.Hour),
+						},
+					})
+					var stdout bytes.Buffer
+					runGetToken(t, ctx, getTokenConfig{
+						tokenCacheDir: tokenCacheDir,
+						issuerURL:     sv.IssuerURL(),
+						httpDriver:    httpdriver.New(ctx, t, httpDriverOption),
+						now:           now.Add(4 * time.Hour),
+						stdout:        &stdout,
+						args:          tc.args,
+					})
+					assertCredentialPluginStdout(t, &stdout, sv.LastTokenResponse().IDToken, now.Add(5*time.Hour))
+				})
+			})
+		})
+	}
+
+	t.Run("PKCE", func(t *testing.T) {
+		t.Parallel()
+		ctx, cancel := context.WithTimeout(context.TODO(), timeout)
+		defer cancel()
+		sv := oidcserver.New(t, keypair.None, oidcserver.Config{
+			Want: oidcserver.Want{
+				Scope:               "openid",
+				RedirectURIPrefix:   "http://localhost:",
+				CodeChallengeMethod: "S256",
+			},
+			Response: oidcserver.Response{
+				IDTokenExpiry:                 now.Add(time.Hour),
+				CodeChallengeMethodsSupported: []string{"plain", "S256"},
+			},
+		})
+		defer sv.Shutdown(t, ctx)
+		var stdout bytes.Buffer
+		runGetToken(t, ctx, getTokenConfig{
+			tokenCacheDir: tokenCacheDir,
+			issuerURL:     sv.IssuerURL(),
+			httpDriver:    httpdriver.New(ctx, t, httpdriver.Option{BodyContains: "Authenticated"}),
+			now:           now,
+			stdout:        &stdout,
+		})
+		assertCredentialPluginStdout(t, &stdout, sv.LastTokenResponse().IDToken, now.Add(time.Hour))
+	})
+
+	t.Run("TLSData", func(t *testing.T) {
+		t.Parallel()
+		ctx, cancel := context.WithTimeout(context.TODO(), timeout)
+		defer cancel()
+		sv := oidcserver.New(t, keypair.Server, oidcserver.Config{
+			Want: oidcserver.Want{
+				Scope:             "openid",
+				RedirectURIPrefix: "http://localhost:",
+			},
+			Response: oidcserver.Response{
+				IDTokenExpiry: now.Add(time.Hour),
+			},
+		})
+		defer sv.Shutdown(t, ctx)
+		var stdout bytes.Buffer
+		runGetToken(t, ctx, getTokenConfig{
+			tokenCacheDir: tokenCacheDir,
+			issuerURL:     sv.IssuerURL(),
+			httpDriver:    httpdriver.New(ctx, t, httpdriver.Option{TLSConfig: keypair.Server.TLSConfig, BodyContains: "Authenticated"}),
+			now:           now,
+			stdout:        &stdout,
+			args:          []string{"--certificate-authority-data", keypair.Server.CACertBase64},
+		})
+		assertCredentialPluginStdout(t, &stdout, sv.LastTokenResponse().IDToken, now.Add(time.Hour))
+	})
+
+	t.Run("ExtraScopes", func(t *testing.T) {
+		t.Parallel()
+		ctx, cancel := context.WithTimeout(context.TODO(), timeout)
+		defer cancel()
+		sv := oidcserver.New(t, keypair.None, oidcserver.Config{
+			Want: oidcserver.Want{
+				Scope:             "email profile openid",
+				RedirectURIPrefix: "http://localhost:",
+			},
+			Response: oidcserver.Response{
+				IDTokenExpiry: now.Add(time.Hour),
+			},
+		})
+		defer sv.Shutdown(t, ctx)
+		var stdout bytes.Buffer
+		runGetToken(t, ctx, getTokenConfig{
+			tokenCacheDir: tokenCacheDir,
+			issuerURL:     sv.IssuerURL(),
+			httpDriver:    httpdriver.New(ctx, t, httpdriver.Option{BodyContains: "Authenticated"}),
+			now:           now,
+			stdout:        &stdout,
+			args: []string{
+				"--oidc-extra-scope", "email",
+				"--oidc-extra-scope", "profile",
+			},
+		})
+		assertCredentialPluginStdout(t, &stdout, sv.LastTokenResponse().IDToken, now.Add(time.Hour))
+	})
+
+	t.Run("OpenURLAfterAuthentication", func(t *testing.T) {
+		t.Parallel()
+		ctx, cancel := context.WithTimeout(context.TODO(), timeout)
+		defer cancel()
+		sv := oidcserver.New(t, keypair.None, oidcserver.Config{
+			Want: oidcserver.Want{
+				Scope:             "openid",
+				RedirectURIPrefix: "http://localhost:",
+			},
+			Response: oidcserver.Response{
+				IDTokenExpiry: now.Add(time.Hour),
+			},
+		})
+		defer sv.Shutdown(t, ctx)
+		var stdout bytes.Buffer
+		runGetToken(t, ctx, getTokenConfig{
+			tokenCacheDir: tokenCacheDir,
+			issuerURL:     sv.IssuerURL(),
+			httpDriver:    httpdriver.New(ctx, t, httpdriver.Option{BodyContains: "URL=https://example.com/success"}),
+			now:           now,
+			stdout:        &stdout,
+			args:          []string{"--open-url-after-authentication", "https://example.com/success"},
+		})
+		assertCredentialPluginStdout(t, &stdout, sv.LastTokenResponse().IDToken, now.Add(time.Hour))
+	})
+
+	t.Run("RedirectURLHostname", func(t *testing.T) {
+		t.Parallel()
+		ctx, cancel := context.WithTimeout(context.TODO(), timeout)
+		defer cancel()
+		sv := oidcserver.New(t, keypair.None, oidcserver.Config{
+			Want: oidcserver.Want{
+				Scope:             "openid",
+				RedirectURIPrefix: "http://127.0.0.1:",
+			},
+			Response: oidcserver.Response{
+				IDTokenExpiry: now.Add(time.Hour),
+			},
+		})
+		defer sv.Shutdown(t, ctx)
+		var stdout bytes.Buffer
+		runGetToken(t, ctx, getTokenConfig{
+			tokenCacheDir: tokenCacheDir,
+			issuerURL:     sv.IssuerURL(),
+			httpDriver:    httpdriver.New(ctx, t, httpdriver.Option{BodyContains: "Authenticated"}),
+			now:           now,
+			stdout:        &stdout,
+			args:          []string{"--oidc-redirect-url-hostname", "127.0.0.1"},
+		})
+		assertCredentialPluginStdout(t, &stdout, sv.LastTokenResponse().IDToken, now.Add(time.Hour))
+	})
+
+	t.Run("ExtraParams", func(t *testing.T) {
+		t.Parallel()
+		ctx, cancel := context.WithTimeout(context.TODO(), timeout)
+		defer cancel()
+		sv := oidcserver.New(t, keypair.None, oidcserver.Config{
+			Want: oidcserver.Want{
+				Scope:             "openid",
+				RedirectURIPrefix: "http://localhost:",
+				ExtraParams: map[string]string{
+					"ttl":    "86400",
+					"reauth": "false",
+				},
+			},
+			Response: oidcserver.Response{
+				IDTokenExpiry: now.Add(time.Hour),
+			},
+		})
+		defer sv.Shutdown(t, ctx)
+		var stdout bytes.Buffer
+		runGetToken(t, ctx, getTokenConfig{
+			tokenCacheDir: tokenCacheDir,
+			issuerURL:     sv.IssuerURL(),
+			httpDriver:    httpdriver.New(ctx, t, httpdriver.Option{BodyContains: "Authenticated"}),
+			now:           now,
+			stdout:        &stdout,
+			args: []string{
+				"--oidc-auth-request-extra-params", "ttl=86400",
+				"--oidc-auth-request-extra-params", "reauth=false",
+			},
+		})
+		assertCredentialPluginStdout(t, &stdout, sv.LastTokenResponse().IDToken, now.Add(time.Hour))
+	})
+}
+
+type getTokenConfig struct {
+	tokenCacheDir string
+	issuerURL     string
+	httpDriver    browser.Interface
+	stdout        io.Writer
+	now           time.Time
+	args          []string
+}
+
+func runGetToken(t *testing.T, ctx context.Context, cfg getTokenConfig) {
+	cmd := di.NewCmdForHeadless(clock.Fake(cfg.now), os.Stdin, cfg.stdout, logger.New(t), cfg.httpDriver)
+	exitCode := cmd.Run(ctx, append([]string{
+		"kubelogin",
+		"get-token",
+		"--token-cache-dir", cfg.tokenCacheDir,
+		"--oidc-issuer-url", cfg.issuerURL,
+		"--oidc-client-id", "kubernetes",
+		"--listen-address", "127.0.0.1:0",
+	}, cfg.args...), "latest")
+	if exitCode != 0 {
+		t.Errorf("exit status wants 0 but %d", exitCode)
+	}
+}
+
+func assertCredentialPluginStdout(t *testing.T, stdout io.Reader, token string, expiry time.Time) {
+	var got clientauthenticationv1beta1.ExecCredential
+	if err := json.NewDecoder(stdout).Decode(&got); err != nil {
+		t.Errorf("could not decode json of the credential plugin: %s", err)
+		return
+	}
+	want := clientauthenticationv1beta1.ExecCredential{
+		TypeMeta: metav1.TypeMeta{
+			APIVersion: "client.authentication.k8s.io/v1beta1",
+			Kind:       "ExecCredential",
+		},
+		Status: &clientauthenticationv1beta1.ExecCredentialStatus{
+			Token:               token,
+			ExpirationTimestamp: &metav1.Time{Time: expiry},
+		},
+	}
+	if diff := cmp.Diff(want, got); diff != "" {
+		t.Errorf("kubeconfig mismatch (-want +got):\n%s", diff)
+	}
+}

integration_test/httpdriver/http_driver.go

@@ -0,0 +1,70 @@
+// Package httpdriver provides a test double of the browser.
+package httpdriver
+
+import (
+	"context"
+	"crypto/tls"
+	"io/ioutil"
+	"net/http"
+	"strings"
+	"testing"
+)
+
+type Option struct {
+	TLSConfig    *tls.Config
+	BodyContains string
+}
+
+// New returns a client to simulate browser access.
+func New(ctx context.Context, t *testing.T, o Option) *client {
+	return &client{ctx, t, o}
+}
+
+// Zero returns a client which call is not expected.
+func Zero(t *testing.T) *zeroClient {
+	return &zeroClient{t}
+}
+
+type client struct {
+	ctx context.Context
+	t   *testing.T
+	o   Option
+}
+
+func (c *client) Open(url string) error {
+	client := http.Client{Transport: &http.Transport{TLSClientConfig: c.o.TLSConfig}}
+	req, err := http.NewRequest("GET", url, nil)
+	if err != nil {
+		c.t.Errorf("could not create a request: %s", err)
+		return nil
+	}
+	req = req.WithContext(c.ctx)
+	resp, err := client.Do(req)
+	if err != nil {
+		c.t.Errorf("could not send a request: %s", err)
+		return nil
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode != 200 {
+		c.t.Errorf("StatusCode wants 200 but %d", resp.StatusCode)
+	}
+	b, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		c.t.Errorf("could not read body: %s", err)
+		return nil
+	}
+	body := string(b)
+	if !strings.Contains(body, c.o.BodyContains) {
+		c.t.Errorf("body should contain %s but was %s", c.o.BodyContains, body)
+	}
+	return nil
+}
+
+type zeroClient struct {
+	t *testing.T
+}
+
+func (c *zeroClient) Open(url string) error {
+	c.t.Errorf("unexpected function call Open(%s)", url)
+	return nil
+}

integration_test/keypair/keypair.go

@@ -0,0 +1,62 @@
+package keypair
+
+import (
+	"crypto/tls"
+	"crypto/x509"
+	"encoding/base64"
+	"io"
+	"io/ioutil"
+	"os"
+	"strings"
+)
+
+// KeyPair represents a pair of certificate and key.
+type KeyPair struct {
+	CertPath     string
+	KeyPath      string
+	CACertPath   string
+	CACertBase64 string
+	TLSConfig    *tls.Config
+}
+
+// None represents non-TLS.
+var None KeyPair
+
+// Server is a KeyPair for TLS server.
+// These files should be generated by Makefile before test.
+var Server = KeyPair{
+	CertPath:     "keypair/testdata/server.crt",
+	KeyPath:      "keypair/testdata/server.key",
+	CACertPath:   "keypair/testdata/ca.crt",
+	CACertBase64: readAsBase64("keypair/testdata/ca.crt"),
+	TLSConfig:    newTLSConfig("keypair/testdata/ca.crt"),
+}
+
+func readAsBase64(name string) string {
+	f, err := os.Open(name)
+	if err != nil {
+		panic(err)
+	}
+	defer f.Close()
+	var s strings.Builder
+	e := base64.NewEncoder(base64.StdEncoding, &s)
+	if _, err := io.Copy(e, f); err != nil {
+		panic(err)
+	}
+	if err := e.Close(); err != nil {
+		panic(err)
+	}
+	return s.String()
+}
+
+func newTLSConfig(name string) *tls.Config {
+	b, err := ioutil.ReadFile(name)
+	if err != nil {
+		panic(err)
+	}
+	p := x509.NewCertPool()
+	if !p.AppendCertsFromPEM(b) {
+		panic("could not append the CA cert")
+	}
+	return &tls.Config{RootCAs: p}
+}

integration_test/keypair/testdata/Makefile

@@ -0,0 +1,26 @@
+EXPIRY := 3650
+OUTPUT_DIR := testdata
+TARGETS := ca.key
+TARGETS += ca.crt
+TARGETS += server.key
+TARGETS += server.crt
+
+.PHONY: all
+all: $(TARGETS)
+
+ca.key:
+	openssl genrsa -out $@ 2048
+ca.csr: ca.key
+	openssl req -new -key ca.key -out $@ -subj "/CN=hello-ca" -config openssl.cnf
+ca.crt: ca.key ca.csr
+	openssl x509 -req -in ca.csr -signkey ca.key -out $@ -days $(EXPIRY)
+server.key:
+	openssl genrsa -out $@ 2048
+server.csr: openssl.cnf server.key
+	openssl req -new -key server.key -out $@ -subj "/CN=localhost" -config openssl.cnf
+server.crt: openssl.cnf server.csr ca.crt ca.key
+	openssl x509 -req -in server.csr -CA ca.crt -CAkey ca.key -CAcreateserial -out $@ -sha256 -days $(EXPIRY) -extensions v3_req -extfile openssl.cnf
+
+.PHONY: clean
+clean:
+	-rm -v $(TARGETS)

integration_test/keypair/testdata/ca.crt

@@ -0,0 +1,17 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----

integration_test/keypair/testdata/ca.csr

@@ -0,0 +1,17 @@
+-----BEGIN CERTIFICATE REQUEST-----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+-----END CERTIFICATE REQUEST-----

integration_test/keypair/testdata/ca.key

@@ -0,0 +1,27 @@
+-----BEGIN RSA PRIVATE KEY-----
+MIIEowIBAAKCAQEAxcPNdS88B6ewqVn/m9yO74OLIwNrqMci8l7olP9XlcJhxUZs
++3WZQpsSj5nC4yEx8uPQbTtBKnXXVDe+8k7OsLTruu9+isTaYk4o/TZbuw/N31ZA
+iT0pJw8hdypTQyMLbeDrVl4bbrfbYywx30DyrHxUkgzOWs459Uwc1wWu0W7M21GY
+4KENHFE3OAcD58FMvvrhvgkslATwwW4M2UtXUFJ8XHh26g/J450DU2gwNxpcSdIs
+vFE6zSyAxU55RElph7mEru9cNWAYhCRZvlZQ2VlH7C6JQ3SHyA9RZmBbPpXhtl9z
+avFkGx2MEwDp/3FmUukRyJnS2KnAo0QdBeS1LQIDAQABAoIBAHSoWtMsaMnPNlu/
+thM32K0auIGP6/rkdQ3pxGLX+M9jmY7oSzNOHHj4xssklZyroS45CmLU2Ez2tG1+
+cMm4iR4dqwxbaBbtpjDlEDLF1PiUiwmadHlANb1PpJsJwZHR41UOn2QUITR/ig+H
+K2gZhM0QjkaU/Uj9a5zyJ/UC6iupmgCtj8ij65B49qKMODxV4gqZstRSZiJ3gb6R
+TBeR3PUWQS62MZueEQz2eF0eXkXKsFWcbLfHArjfIJ533zW68A0vabgqOhCwJTks
++rkyaKUjEwJJQcgpCfUI4t9HAwICqYtw0fQdDDaMak2XTDFnGHn1/VfSi818U5Sa
+jZ+/uIECgYEA4uCd5ISsLWebSv2r5f97N8+WcW0MSJ0XP5MniiMvlaNOtJmoN3H0
+PlgR3uwpH9TNWHITZEEb/I93r2E3f24v2018g0uJuwiRDusxHs7yuxw/93Y5rwtG
+3twL1k0GyeLCxfM2y2QQU/awXISx7nNk2f0umvTWmjrEw632oQSWCSECgYEA3yaF
+zDk7k1u1GdZAh+pQAyUtjzHSvQjiE2JzLaH8BTorACrczRascX5yyMi0QfLYnoYt
+UL9dCb4Z8HUclj55kBSx8anvVtf3XAT3hZ3sm8LV3JLGDeURGS8rGdV+tyFk7zw9
+XgvaLj3xjB5CoJvtOhbXvqF9M9yp4TMBb5El7o0CgYBTx5Bm15thNPZCrgQxbbOJ
+u42ZmyRDGEeCgYvDVhT3VBP3WxqkRt9juk/3GwxgpcuikpWYmvaDwFL5H5RH6V+g
+wy9sqJNWzuYKNU2xS8iU0ezJLA5HFon4OBfi7hTIroUwZgzg9LWW2+zqbVHrdQ9T
+9Eumiy1ITNVmUTJW6YOiIQKBgBE4BsEAdZFkVTAeMTKLqQrlFoPjI1DE27UFNsAB
+rNG2cFT9+bW1ly7WxAKsQgSIuaBZ2CtP6Nz0l0nPr5oEThsJDcYJB9faqFKoa3Ua
+/4PxX9E6Xh/6WfxogFno+HMnF4PCUTXtkjNZQkc+moOMJJ0D4DfsfB3BXDZtWiIC
+wDuNAoGBAN5ZFTXwE1VpWxIWq5dV9+0aVOP/eB+h7Pt+u2xyRip31FGcpGEzGniu
+VmOzWApW7NmvD0QWtstJWlCpsw+rOptAL0oVunlB70KuYuA+2Q5g/Cw3kUrvXqbe
+mkCoV21eFAmpU+I6z/n7pUDXPuUsmTkzmwedv0HUuNSQJmHZOMPD
+-----END RSA PRIVATE KEY-----

integration_test/keypair/testdata/ca.srl

@@ -0,0 +1 @@
+9E12C7A1AF348811

integration_test/keypair/testdata/openssl.cnf

@@ -0,0 +1,14 @@
+[ req ]
+distinguished_name = req_distinguished_name
+req_extensions = v3_req
+
+[ req_distinguished_name ]
+
+[ v3_req ]
+basicConstraints = CA:FALSE
+keyUsage = nonRepudiation, digitalSignature, keyEncipherment
+subjectAltName = @alt_names
+extendedKeyUsage = serverAuth
+
+[alt_names]
+DNS.1 = localhost

integration_test/keypair/testdata/server.crt

@@ -0,0 +1,18 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----

integration_test/keypair/testdata/server.csr

@@ -0,0 +1,17 @@
+-----BEGIN CERTIFICATE REQUEST-----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+-----END CERTIFICATE REQUEST-----

integration_test/keypair/testdata/server.key

@@ -0,0 +1,27 @@
+-----BEGIN RSA PRIVATE KEY-----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+-----END RSA PRIVATE KEY-----

integration_test/oidcserver/handler/handler.go

@@ -1,5 +1,5 @@
-// Package idp provides a test double of the identity provider of OpenID Connect.
-package idp
+// Package handler provides a HTTP handler for the OpenID Connect Provider.
+package handler
 
 import (
 	"encoding/json"
@@ -10,16 +10,16 @@ import (
 	"golang.org/x/xerrors"
 )
 
-func NewHandler(t *testing.T, service Service) *Handler {
-	return &Handler{t, service}
+func New(t *testing.T, provider Provider) *Handler {
+	return &Handler{t, provider}
 }
 
-// Handler provides a HTTP handler for the identity provider of OpenID Connect.
-// You need to implement the Service interface.
+// Handler provides a HTTP handler for the OpenID Connect Provider.
+// You need to implement the Provider interface.
 // Note that this skips some security checks and is only for testing.
 type Handler struct {
-	t       *testing.T
-	service Service
+	t        *testing.T
+	provider Provider
 }
 
 func (h *Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
@@ -58,25 +58,31 @@ func (h *Handler) serveHTTP(w http.ResponseWriter, r *http.Request) error {
 	p := r.URL.Path
 	switch {
 	case m == "GET" && p == "/.well-known/openid-configuration":
-		discoveryResponse := h.service.Discovery()
+		discoveryResponse := h.provider.Discovery()
 		w.Header().Add("Content-Type", "application/json")
 		e := json.NewEncoder(w)
 		if err := e.Encode(discoveryResponse); err != nil {
 			return xerrors.Errorf("could not render json: %w", err)
 		}
 	case m == "GET" && p == "/certs":
-		certificatesResponse := h.service.GetCertificates()
+		certificatesResponse := h.provider.GetCertificates()
 		w.Header().Add("Content-Type", "application/json")
 		e := json.NewEncoder(w)
 		if err := e.Encode(certificatesResponse); err != nil {
 			return xerrors.Errorf("could not render json: %w", err)
 		}
 	case m == "GET" && p == "/auth":
-		// 3.1.2.1. Authentication Request
-		// https://openid.net/specs/openid-connect-core-1_0.html#AuthRequest
 		q := r.URL.Query()
-		redirectURI, scope, state, nonce := q.Get("redirect_uri"), q.Get("scope"), q.Get("state"), q.Get("nonce")
-		code, err := h.service.AuthenticateCode(scope, nonce)
+		redirectURI, state := q.Get("redirect_uri"), q.Get("state")
+		code, err := h.provider.AuthenticateCode(AuthenticationRequest{
+			RedirectURI:         redirectURI,
+			State:               state,
+			Scope:               q.Get("scope"),
+			Nonce:               q.Get("nonce"),
+			CodeChallenge:       q.Get("code_challenge"),
+			CodeChallengeMethod: q.Get("code_challenge_method"),
+			RawQuery:            q,
+		})
 		if err != nil {
 			return xerrors.Errorf("authentication error: %w", err)
 		}
@@ -89,10 +95,10 @@ func (h *Handler) serveHTTP(w http.ResponseWriter, r *http.Request) error {
 		grantType := r.Form.Get("grant_type")
 		switch grantType {
 		case "authorization_code":
-			// 3.1.3.1. Token Request
-			// https://openid.net/specs/openid-connect-core-1_0.html#TokenRequest
-			code := r.Form.Get("code")
-			tokenResponse, err := h.service.Exchange(code)
+			tokenResponse, err := h.provider.Exchange(TokenRequest{
+				Code:         r.Form.Get("code"),
+				CodeVerifier: r.Form.Get("code_verifier"),
+			})
 			if err != nil {
 				return xerrors.Errorf("token request error: %w", err)
 			}
@@ -105,7 +111,7 @@ func (h *Handler) serveHTTP(w http.ResponseWriter, r *http.Request) error {
 			// 4.3. Resource Owner Password Credentials Grant
 			// https://tools.ietf.org/html/rfc6749#section-4.3
 			username, password, scope := r.Form.Get("username"), r.Form.Get("password"), r.Form.Get("scope")
-			tokenResponse, err := h.service.AuthenticatePassword(username, password, scope)
+			tokenResponse, err := h.provider.AuthenticatePassword(username, password, scope)
 			if err != nil {
 				return xerrors.Errorf("authentication error: %w", err)
 			}
@@ -118,7 +124,7 @@ func (h *Handler) serveHTTP(w http.ResponseWriter, r *http.Request) error {
 			// 12.1. Refresh Request
 			// https://openid.net/specs/openid-connect-core-1_0.html#RefreshingAccessToken
 			refreshToken := r.Form.Get("refresh_token")
-			tokenResponse, err := h.service.Refresh(refreshToken)
+			tokenResponse, err := h.provider.Refresh(refreshToken)
 			if err != nil {
 				return xerrors.Errorf("token refresh error: %w", err)
 			}

integration_test/oidcserver/handler/types.go

@@ -1,23 +1,19 @@
-package idp
-
-//go:generate mockgen -destination mock_idp/mock_service.go github.com/int128/kubelogin/e2e_test/idp Service
+package handler
 
 import (
-	"crypto/rsa"
-	"encoding/base64"
 	"fmt"
-	"math/big"
+	"net/url"
 )
 
-// Service provides discovery and authentication methods.
+// Provider provides discovery and authentication methods.
 // If an implemented method returns an ErrorResponse,
 // the handler will respond 400 and corresponding json of the ErrorResponse.
 // Otherwise, the handler will respond 500 and fail the current test.
-type Service interface {
+type Provider interface {
 	Discovery() *DiscoveryResponse
 	GetCertificates() *CertificatesResponse
-	AuthenticateCode(scope, nonce string) (code string, err error)
-	Exchange(code string) (*TokenResponse, error)
+	AuthenticateCode(req AuthenticationRequest) (code string, err error)
+	Exchange(req TokenRequest) (*TokenResponse, error)
 	AuthenticatePassword(username, password, scope string) (*TokenResponse, error)
 	Refresh(refreshToken string) (*TokenResponse, error)
 }
@@ -38,26 +34,6 @@ type DiscoveryResponse struct {
 	CodeChallengeMethodsSupported     []string `json:"code_challenge_methods_supported"`
 }
 
-// NewDiscoveryResponse returns a DiscoveryResponse for the local server.
-// This is based on https://accounts.google.com/.well-known/openid-configuration.
-func NewDiscoveryResponse(issuer string) *DiscoveryResponse {
-	return &DiscoveryResponse{
-		Issuer:                            issuer,
-		AuthorizationEndpoint:             issuer + "/auth",
-		TokenEndpoint:                     issuer + "/token",
-		JwksURI:                           issuer + "/certs",
-		UserinfoEndpoint:                  issuer + "/userinfo",
-		RevocationEndpoint:                issuer + "/revoke",
-		ResponseTypesSupported:            []string{"code id_token"},
-		SubjectTypesSupported:             []string{"public"},
-		IDTokenSigningAlgValuesSupported:  []string{"RS256"},
-		ScopesSupported:                   []string{"openid", "email", "profile"},
-		TokenEndpointAuthMethodsSupported: []string{"client_secret_post", "client_secret_basic"},
-		CodeChallengeMethodsSupported:     []string{"plain", "S256"},
-		ClaimsSupported:                   []string{"aud", "email", "exp", "iat", "iss", "name", "sub"},
-	}
-}
-
 type CertificatesResponse struct {
 	Keys []*CertificatesResponseKey `json:"keys"`
 }
@@ -71,21 +47,23 @@ type CertificatesResponseKey struct {
 	E   string `json:"e"`
 }
 
-// NewCertificatesResponse returns a CertificatesResponse using the key pair.
-// This is used for verifying a signature of ID token.
-func NewCertificatesResponse(idTokenKeyPair *rsa.PrivateKey) *CertificatesResponse {
-	return &CertificatesResponse{
-		Keys: []*CertificatesResponseKey{
-			{
-				Kty: "RSA",
-				Alg: "RS256",
-				Use: "sig",
-				Kid: "dummy",
-				E:   base64.RawURLEncoding.EncodeToString(big.NewInt(int64(idTokenKeyPair.E)).Bytes()),
-				N:   base64.RawURLEncoding.EncodeToString(idTokenKeyPair.N.Bytes()),
-			},
-		},
-	}
+// AuthenticationRequest represents a type of:
+// https://openid.net/specs/openid-connect-core-1_0.html#AuthRequest
+type AuthenticationRequest struct {
+	RedirectURI         string
+	State               string
+	Scope               string // space separated string
+	Nonce               string
+	CodeChallenge       string
+	CodeChallengeMethod string
+	RawQuery            url.Values
+}
+
+// TokenRequest represents a type of:
+// https://openid.net/specs/openid-connect-core-1_0.html#TokenRequest
+type TokenRequest struct {
+	Code         string
+	CodeVerifier string
 }
 
 type TokenResponse struct {
@@ -96,17 +74,6 @@ type TokenResponse struct {
 	IDToken      string `json:"id_token"`
 }
 
-// NewTokenResponse returns a TokenResponse.
-func NewTokenResponse(idToken, refreshToken string) *TokenResponse {
-	return &TokenResponse{
-		TokenType:    "Bearer",
-		ExpiresIn:    3600,
-		AccessToken:  "YOUR_ACCESS_TOKEN",
-		IDToken:      idToken,
-		RefreshToken: refreshToken,
-	}
-}
-
 // ErrorResponse represents an error response described in the following section:
 // 5.2 Error Response
 // https://tools.ietf.org/html/rfc6749#section-5.2

integration_test/oidcserver/http/http.go

@@ -1,13 +1,13 @@
-// Package localserver provides a http server running on localhost.
-// This is only for testing.
-//
-package localserver
+// Package http provides a http server running on localhost for testing.
+package http
 
 import (
 	"context"
 	"net"
 	"net/http"
 	"testing"
+
+	"github.com/int128/kubelogin/integration_test/keypair"
 )
 
 type Shutdowner interface {
@@ -15,20 +15,23 @@ type Shutdowner interface {
 }
 
 type shutdowner struct {
-	l net.Listener
 	s *http.Server
 }
 
 func (s *shutdowner) Shutdown(t *testing.T, ctx context.Context) {
-	// s.Shutdown() closes the lister as well,
-	// so we do not need to call l.Close() explicitly
 	if err := s.s.Shutdown(ctx); err != nil {
-		t.Errorf("Could not shutdown the server: %s", err)
+		t.Errorf("could not shutdown the server: %s", err)
 	}
 }
 
-// Start starts an authentication server.
-func Start(t *testing.T, h http.Handler) (string, Shutdowner) {
+func Start(t *testing.T, h http.Handler, k keypair.KeyPair) (string, Shutdowner) {
+	if k == keypair.None {
+		return startNoTLS(t, h)
+	}
+	return startTLS(t, h, k)
+}
+
+func startNoTLS(t *testing.T, h http.Handler) (string, *shutdowner) {
 	t.Helper()
 	l, port := newLocalhostListener(t)
 	url := "http://localhost:" + port
@@ -41,11 +44,10 @@ func Start(t *testing.T, h http.Handler) (string, Shutdowner) {
 			t.Error(err)
 		}
 	}()
-	return url, &shutdowner{l, s}
+	return url, &shutdowner{s}
 }
 
-// Start starts an authentication server with TLS.
-func StartTLS(t *testing.T, cert string, key string, h http.Handler) (string, Shutdowner) {
+func startTLS(t *testing.T, h http.Handler, k keypair.KeyPair) (string, *shutdowner) {
 	t.Helper()
 	l, port := newLocalhostListener(t)
 	url := "https://localhost:" + port
@@ -53,12 +55,12 @@ func StartTLS(t *testing.T, cert string, key string, h http.Handler) (string, Sh
 		Handler: h,
 	}
 	go func() {
-		err := s.ServeTLS(l, cert, key)
+		err := s.ServeTLS(l, k.CertPath, k.KeyPath)
 		if err != nil && err != http.ErrServerClosed {
 			t.Error(err)
 		}
 	}()
-	return url, &shutdowner{l, s}
+	return url, &shutdowner{s}
 }
 
 func newLocalhostListener(t *testing.T) (net.Listener, string) {

integration_test/oidcserver/server.go

@@ -0,0 +1,217 @@
+// Package oidcserver provides a stub of OpenID Connect provider.
+package oidcserver
+
+import (
+	"crypto/sha256"
+	"encoding/base64"
+	"math/big"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/int128/kubelogin/integration_test/keypair"
+	"github.com/int128/kubelogin/integration_test/oidcserver/handler"
+	"github.com/int128/kubelogin/integration_test/oidcserver/http"
+	"github.com/int128/kubelogin/pkg/testing/jwt"
+	"golang.org/x/xerrors"
+)
+
+type Server interface {
+	http.Shutdowner
+	IssuerURL() string
+	SetConfig(Config)
+	LastTokenResponse() *handler.TokenResponse
+}
+
+// Want represents a set of expected values.
+type Want struct {
+	Scope               string
+	RedirectURIPrefix   string
+	CodeChallengeMethod string            // optional
+	ExtraParams         map[string]string // optional
+	Username            string            // optional
+	Password            string            // optional
+	RefreshToken        string            // optional
+}
+
+// Response represents a set of response values.
+type Response struct {
+	IDTokenExpiry                 time.Time
+	RefreshToken                  string
+	RefreshError                  string   // if set, Refresh() will return the error
+	CodeChallengeMethodsSupported []string // optional
+}
+
+// Config represents a configuration of the OpenID Connect provider.
+type Config struct {
+	Want     Want
+	Response Response
+}
+
+// New starts a HTTP server for the OpenID Connect provider.
+func New(t *testing.T, k keypair.KeyPair, c Config) Server {
+	sv := server{Config: c, t: t}
+	sv.issuerURL, sv.Shutdowner = http.Start(t, handler.New(t, &sv), k)
+	return &sv
+}
+
+type server struct {
+	Config
+	http.Shutdowner
+	t                         *testing.T
+	issuerURL                 string
+	lastAuthenticationRequest *handler.AuthenticationRequest
+	lastTokenResponse         *handler.TokenResponse
+}
+
+func (sv *server) IssuerURL() string {
+	return sv.issuerURL
+}
+
+func (sv *server) SetConfig(cfg Config) {
+	sv.Config = cfg
+}
+
+func (sv *server) LastTokenResponse() *handler.TokenResponse {
+	return sv.lastTokenResponse
+}
+
+func (sv *server) Discovery() *handler.DiscoveryResponse {
+	// based on https://accounts.google.com/.well-known/openid-configuration
+	return &handler.DiscoveryResponse{
+		Issuer:                            sv.issuerURL,
+		AuthorizationEndpoint:             sv.issuerURL + "/auth",
+		TokenEndpoint:                     sv.issuerURL + "/token",
+		JwksURI:                           sv.issuerURL + "/certs",
+		UserinfoEndpoint:                  sv.issuerURL + "/userinfo",
+		RevocationEndpoint:                sv.issuerURL + "/revoke",
+		ResponseTypesSupported:            []string{"code id_token"},
+		SubjectTypesSupported:             []string{"public"},
+		IDTokenSigningAlgValuesSupported:  []string{"RS256"},
+		ScopesSupported:                   []string{"openid", "email", "profile"},
+		TokenEndpointAuthMethodsSupported: []string{"client_secret_post", "client_secret_basic"},
+		CodeChallengeMethodsSupported:     sv.Config.Response.CodeChallengeMethodsSupported,
+		ClaimsSupported:                   []string{"aud", "email", "exp", "iat", "iss", "name", "sub"},
+	}
+}
+
+func (sv *server) GetCertificates() *handler.CertificatesResponse {
+	idTokenKeyPair := jwt.PrivateKey
+	return &handler.CertificatesResponse{
+		Keys: []*handler.CertificatesResponseKey{
+			{
+				Kty: "RSA",
+				Alg: "RS256",
+				Use: "sig",
+				Kid: "dummy",
+				E:   base64.RawURLEncoding.EncodeToString(big.NewInt(int64(idTokenKeyPair.E)).Bytes()),
+				N:   base64.RawURLEncoding.EncodeToString(idTokenKeyPair.N.Bytes()),
+			},
+		},
+	}
+}
+
+func (sv *server) AuthenticateCode(req handler.AuthenticationRequest) (code string, err error) {
+	if req.Scope != sv.Want.Scope {
+		sv.t.Errorf("scope wants `%s` but was `%s`", sv.Want.Scope, req.Scope)
+	}
+	if !strings.HasPrefix(req.RedirectURI, sv.Want.RedirectURIPrefix) {
+		sv.t.Errorf("redirectURI wants prefix `%s` but was `%s`", sv.Want.RedirectURIPrefix, req.RedirectURI)
+	}
+	if req.CodeChallengeMethod != sv.Want.CodeChallengeMethod {
+		sv.t.Errorf("code_challenge_method wants `%s` but was `%s`", sv.Want.CodeChallengeMethod, req.CodeChallengeMethod)
+	}
+	for k, v := range sv.Want.ExtraParams {
+		got := req.RawQuery.Get(k)
+		if got != v {
+			sv.t.Errorf("parameter %s wants `%s` but was `%s`", k, v, got)
+		}
+	}
+	sv.lastAuthenticationRequest = &req
+	return "YOUR_AUTH_CODE", nil
+}
+
+func (sv *server) Exchange(req handler.TokenRequest) (*handler.TokenResponse, error) {
+	if req.Code != "YOUR_AUTH_CODE" {
+		return nil, xerrors.Errorf("code wants %s but was %s", "YOUR_AUTH_CODE", req.Code)
+	}
+	if sv.lastAuthenticationRequest.CodeChallengeMethod == "S256" {
+		// https://tools.ietf.org/html/rfc7636#section-4.6
+		challenge := computeS256Challenge(req.CodeVerifier)
+		if challenge != sv.lastAuthenticationRequest.CodeChallenge {
+			sv.t.Errorf("pkce S256 challenge did not match (want %s but was %s)", sv.lastAuthenticationRequest.CodeChallenge, challenge)
+		}
+	}
+	resp := &handler.TokenResponse{
+		TokenType:    "Bearer",
+		ExpiresIn:    3600,
+		AccessToken:  "YOUR_ACCESS_TOKEN",
+		RefreshToken: sv.Response.RefreshToken,
+		IDToken: jwt.EncodeF(sv.t, func(claims *jwt.Claims) {
+			claims.Issuer = sv.issuerURL
+			claims.Subject = "SUBJECT"
+			claims.IssuedAt = sv.Response.IDTokenExpiry.Add(-time.Hour).Unix()
+			claims.ExpiresAt = sv.Response.IDTokenExpiry.Unix()
+			claims.Audience = []string{"kubernetes"}
+			claims.Nonce = sv.lastAuthenticationRequest.Nonce
+		}),
+	}
+	sv.lastTokenResponse = resp
+	return resp, nil
+}
+
+func computeS256Challenge(verifier string) string {
+	c := sha256.Sum256([]byte(verifier))
+	return base64.URLEncoding.WithPadding(base64.NoPadding).EncodeToString(c[:])
+}
+
+func (sv *server) AuthenticatePassword(username, password, scope string) (*handler.TokenResponse, error) {
+	if scope != sv.Want.Scope {
+		sv.t.Errorf("scope wants `%s` but was `%s`", sv.Want.Scope, scope)
+	}
+	if username != sv.Want.Username {
+		sv.t.Errorf("username wants `%s` but was `%s`", sv.Want.Username, username)
+	}
+	if password != sv.Want.Password {
+		sv.t.Errorf("password wants `%s` but was `%s`", sv.Want.Password, password)
+	}
+	resp := &handler.TokenResponse{
+		TokenType:    "Bearer",
+		ExpiresIn:    3600,
+		AccessToken:  "YOUR_ACCESS_TOKEN",
+		RefreshToken: sv.Response.RefreshToken,
+		IDToken: jwt.EncodeF(sv.t, func(claims *jwt.Claims) {
+			claims.Issuer = sv.issuerURL
+			claims.Subject = "SUBJECT"
+			claims.IssuedAt = sv.Response.IDTokenExpiry.Add(-time.Hour).Unix()
+			claims.ExpiresAt = sv.Response.IDTokenExpiry.Unix()
+			claims.Audience = []string{"kubernetes"}
+		}),
+	}
+	sv.lastTokenResponse = resp
+	return resp, nil
+}
+
+func (sv *server) Refresh(refreshToken string) (*handler.TokenResponse, error) {
+	if refreshToken != sv.Want.RefreshToken {
+		sv.t.Errorf("refreshToken wants %s but was %s", sv.Want.RefreshToken, refreshToken)
+	}
+	if sv.Response.RefreshError != "" {
+		return nil, &handler.ErrorResponse{Code: "invalid_request", Description: sv.Response.RefreshError}
+	}
+	resp := &handler.TokenResponse{
+		TokenType:    "Bearer",
+		ExpiresIn:    3600,
+		AccessToken:  "YOUR_ACCESS_TOKEN",
+		RefreshToken: sv.Response.RefreshToken,
+		IDToken: jwt.EncodeF(sv.t, func(claims *jwt.Claims) {
+			claims.Issuer = sv.issuerURL
+			claims.Subject = "SUBJECT"
+			claims.IssuedAt = sv.Response.IDTokenExpiry.Add(-time.Hour).Unix()
+			claims.ExpiresAt = sv.Response.IDTokenExpiry.Unix()
+			claims.Audience = []string{"kubernetes"}
+		}),
+	}
+	sv.lastTokenResponse = resp
+	return resp, nil
+}

integration_test/standalone_test.go

@@ -0,0 +1,334 @@
+package integration_test
+
+import (
+	"context"
+	"os"
+	"testing"
+	"time"
+
+	"github.com/int128/kubelogin/integration_test/httpdriver"
+	"github.com/int128/kubelogin/integration_test/keypair"
+	"github.com/int128/kubelogin/integration_test/kubeconfig"
+	"github.com/int128/kubelogin/integration_test/oidcserver"
+	"github.com/int128/kubelogin/pkg/adaptors/browser"
+	"github.com/int128/kubelogin/pkg/di"
+	"github.com/int128/kubelogin/pkg/testing/clock"
+	"github.com/int128/kubelogin/pkg/testing/logger"
+)
+
+// Run the integration tests of the Login use-case.
+//
+// 1. Start the auth server.
+// 2. Run the Cmd.
+// 3. Open a request for the local server.
+// 4. Verify the kubeconfig.
+//
+func TestStandalone(t *testing.T) {
+	timeout := 3 * time.Second
+	now := time.Date(2020, 1, 1, 0, 0, 0, 0, time.UTC)
+
+	for name, tc := range map[string]struct {
+		keyPair keypair.KeyPair
+		args    []string
+	}{
+		"NoTLS": {},
+		"TLS": {
+			keyPair: keypair.Server,
+		},
+	} {
+		httpDriverOption := httpdriver.Option{
+			TLSConfig:    tc.keyPair.TLSConfig,
+			BodyContains: "Authenticated",
+		}
+
+		t.Run(name, func(t *testing.T) {
+			t.Run("AuthCode", func(t *testing.T) {
+				t.Parallel()
+				ctx, cancel := context.WithTimeout(context.TODO(), timeout)
+				defer cancel()
+				sv := oidcserver.New(t, tc.keyPair, oidcserver.Config{
+					Want: oidcserver.Want{
+						Scope:             "openid",
+						RedirectURIPrefix: "http://localhost:",
+					},
+					Response: oidcserver.Response{
+						IDTokenExpiry: now.Add(time.Hour),
+					},
+				})
+				defer sv.Shutdown(t, ctx)
+				kubeConfigFilename := kubeconfig.Create(t, &kubeconfig.Values{
+					Issuer:                  sv.IssuerURL(),
+					IDPCertificateAuthority: tc.keyPair.CACertPath,
+				})
+				defer os.Remove(kubeConfigFilename)
+				runStandalone(t, ctx, standaloneConfig{
+					issuerURL:          sv.IssuerURL(),
+					kubeConfigFilename: kubeConfigFilename,
+					httpDriver:         httpdriver.New(ctx, t, httpDriverOption),
+					now:                now,
+				})
+				kubeconfig.Verify(t, kubeConfigFilename, kubeconfig.AuthProviderConfig{
+					IDToken:      sv.LastTokenResponse().IDToken,
+					RefreshToken: sv.LastTokenResponse().RefreshToken,
+				})
+			})
+
+			t.Run("ROPC", func(t *testing.T) {
+				t.Parallel()
+				ctx, cancel := context.WithTimeout(context.TODO(), timeout)
+				defer cancel()
+				sv := oidcserver.New(t, tc.keyPair, oidcserver.Config{
+					Want: oidcserver.Want{
+						Scope:             "openid",
+						RedirectURIPrefix: "http://localhost:",
+						Username:          "USER1",
+						Password:          "PASS1",
+					},
+					Response: oidcserver.Response{
+						IDTokenExpiry: now.Add(time.Hour),
+					},
+				})
+				defer sv.Shutdown(t, ctx)
+				kubeConfigFilename := kubeconfig.Create(t, &kubeconfig.Values{
+					Issuer:                  sv.IssuerURL(),
+					IDPCertificateAuthority: tc.keyPair.CACertPath,
+				})
+				defer os.Remove(kubeConfigFilename)
+				runStandalone(t, ctx, standaloneConfig{
+					issuerURL:          sv.IssuerURL(),
+					kubeConfigFilename: kubeConfigFilename,
+					httpDriver:         httpdriver.Zero(t),
+					now:                now,
+					args: []string{
+						"--username", "USER1",
+						"--password", "PASS1",
+					},
+				})
+				kubeconfig.Verify(t, kubeConfigFilename, kubeconfig.AuthProviderConfig{
+					IDToken:      sv.LastTokenResponse().IDToken,
+					RefreshToken: sv.LastTokenResponse().RefreshToken,
+				})
+			})
+
+			t.Run("TokenLifecycle", func(t *testing.T) {
+				t.Parallel()
+				ctx, cancel := context.WithTimeout(context.TODO(), timeout)
+				defer cancel()
+				sv := oidcserver.New(t, tc.keyPair, oidcserver.Config{})
+				defer sv.Shutdown(t, ctx)
+				kubeConfigFilename := kubeconfig.Create(t, &kubeconfig.Values{
+					Issuer:                  sv.IssuerURL(),
+					IDPCertificateAuthority: tc.keyPair.CACertPath,
+				})
+				defer os.Remove(kubeConfigFilename)
+
+				t.Run("NoToken", func(t *testing.T) {
+					sv.SetConfig(oidcserver.Config{
+						Want: oidcserver.Want{
+							Scope:             "openid",
+							RedirectURIPrefix: "http://localhost:",
+						},
+						Response: oidcserver.Response{
+							IDTokenExpiry: now.Add(time.Hour),
+							RefreshToken:  "REFRESH_TOKEN_1",
+						},
+					})
+					runStandalone(t, ctx, standaloneConfig{
+						issuerURL:          sv.IssuerURL(),
+						kubeConfigFilename: kubeConfigFilename,
+						httpDriver:         httpdriver.New(ctx, t, httpDriverOption),
+						now:                now,
+					})
+					kubeconfig.Verify(t, kubeConfigFilename, kubeconfig.AuthProviderConfig{
+						IDToken:      sv.LastTokenResponse().IDToken,
+						RefreshToken: "REFRESH_TOKEN_1",
+					})
+				})
+				t.Run("Valid", func(t *testing.T) {
+					sv.SetConfig(oidcserver.Config{})
+					runStandalone(t, ctx, standaloneConfig{
+						issuerURL:          sv.IssuerURL(),
+						kubeConfigFilename: kubeConfigFilename,
+						httpDriver:         httpdriver.Zero(t),
+						now:                now,
+					})
+					kubeconfig.Verify(t, kubeConfigFilename, kubeconfig.AuthProviderConfig{
+						IDToken:      sv.LastTokenResponse().IDToken,
+						RefreshToken: "REFRESH_TOKEN_1",
+					})
+				})
+				t.Run("Refresh", func(t *testing.T) {
+					sv.SetConfig(oidcserver.Config{
+						Want: oidcserver.Want{
+							Scope:             "openid",
+							RedirectURIPrefix: "http://localhost:",
+							RefreshToken:      "REFRESH_TOKEN_1",
+						},
+						Response: oidcserver.Response{
+							IDTokenExpiry: now.Add(3 * time.Hour),
+							RefreshToken:  "REFRESH_TOKEN_2",
+						},
+					})
+					runStandalone(t, ctx, standaloneConfig{
+						issuerURL:          sv.IssuerURL(),
+						kubeConfigFilename: kubeConfigFilename,
+						httpDriver:         httpdriver.New(ctx, t, httpDriverOption),
+						now:                now.Add(2 * time.Hour),
+					})
+					kubeconfig.Verify(t, kubeConfigFilename, kubeconfig.AuthProviderConfig{
+						IDToken:      sv.LastTokenResponse().IDToken,
+						RefreshToken: "REFRESH_TOKEN_2",
+					})
+				})
+				t.Run("RefreshAgain", func(t *testing.T) {
+					sv.SetConfig(oidcserver.Config{
+						Want: oidcserver.Want{
+							Scope:             "openid",
+							RedirectURIPrefix: "http://localhost:",
+							RefreshToken:      "REFRESH_TOKEN_2",
+						},
+						Response: oidcserver.Response{
+							IDTokenExpiry: now.Add(5 * time.Hour),
+						},
+					})
+					runStandalone(t, ctx, standaloneConfig{
+						issuerURL:          sv.IssuerURL(),
+						kubeConfigFilename: kubeConfigFilename,
+						httpDriver:         httpdriver.New(ctx, t, httpDriverOption),
+						now:                now.Add(4 * time.Hour),
+					})
+					kubeconfig.Verify(t, kubeConfigFilename, kubeconfig.AuthProviderConfig{
+						IDToken:      sv.LastTokenResponse().IDToken,
+						RefreshToken: "REFRESH_TOKEN_2",
+					})
+				})
+			})
+		})
+	}
+
+	t.Run("TLSData", func(t *testing.T) {
+		t.Parallel()
+		ctx, cancel := context.WithTimeout(context.TODO(), timeout)
+		defer cancel()
+		sv := oidcserver.New(t, keypair.Server, oidcserver.Config{
+			Want: oidcserver.Want{
+				Scope:             "openid",
+				RedirectURIPrefix: "http://localhost:",
+			},
+			Response: oidcserver.Response{
+				IDTokenExpiry: now.Add(time.Hour),
+			},
+		})
+		defer sv.Shutdown(t, ctx)
+		kubeConfigFilename := kubeconfig.Create(t, &kubeconfig.Values{
+			Issuer:                      sv.IssuerURL(),
+			IDPCertificateAuthorityData: keypair.Server.CACertBase64,
+		})
+		defer os.Remove(kubeConfigFilename)
+		runStandalone(t, ctx, standaloneConfig{
+			issuerURL:          sv.IssuerURL(),
+			kubeConfigFilename: kubeConfigFilename,
+			httpDriver:         httpdriver.New(ctx, t, httpdriver.Option{TLSConfig: keypair.Server.TLSConfig}),
+			now:                now,
+		})
+		kubeconfig.Verify(t, kubeConfigFilename, kubeconfig.AuthProviderConfig{
+			IDToken:      sv.LastTokenResponse().IDToken,
+			RefreshToken: sv.LastTokenResponse().RefreshToken,
+		})
+	})
+
+	t.Run("env_KUBECONFIG", func(t *testing.T) {
+		ctx, cancel := context.WithTimeout(context.TODO(), timeout)
+		defer cancel()
+		sv := oidcserver.New(t, keypair.None, oidcserver.Config{
+			Want: oidcserver.Want{
+				Scope:             "openid",
+				RedirectURIPrefix: "http://localhost:",
+			},
+			Response: oidcserver.Response{
+				IDTokenExpiry: now.Add(time.Hour),
+			},
+		})
+		defer sv.Shutdown(t, ctx)
+		kubeConfigFilename := kubeconfig.Create(t, &kubeconfig.Values{
+			Issuer: sv.IssuerURL(),
+		})
+		defer os.Remove(kubeConfigFilename)
+		setenv(t, "KUBECONFIG", kubeConfigFilename+string(os.PathListSeparator)+"kubeconfig/testdata/dummy.yaml")
+		defer unsetenv(t, "KUBECONFIG")
+		runStandalone(t, ctx, standaloneConfig{
+			issuerURL:  sv.IssuerURL(),
+			httpDriver: httpdriver.New(ctx, t, httpdriver.Option{}),
+			now:        now,
+		})
+		kubeconfig.Verify(t, kubeConfigFilename, kubeconfig.AuthProviderConfig{
+			IDToken:      sv.LastTokenResponse().IDToken,
+			RefreshToken: sv.LastTokenResponse().RefreshToken,
+		})
+	})
+
+	t.Run("ExtraScopes", func(t *testing.T) {
+		t.Parallel()
+		ctx, cancel := context.WithTimeout(context.TODO(), timeout)
+		defer cancel()
+		sv := oidcserver.New(t, keypair.None, oidcserver.Config{
+			Want: oidcserver.Want{
+				Scope:             "profile groups openid",
+				RedirectURIPrefix: "http://localhost:",
+			},
+			Response: oidcserver.Response{
+				IDTokenExpiry: now.Add(time.Hour),
+			},
+		})
+		defer sv.Shutdown(t, ctx)
+		kubeConfigFilename := kubeconfig.Create(t, &kubeconfig.Values{
+			Issuer:      sv.IssuerURL(),
+			ExtraScopes: "profile,groups",
+		})
+		defer os.Remove(kubeConfigFilename)
+		runStandalone(t, ctx, standaloneConfig{
+			issuerURL:          sv.IssuerURL(),
+			kubeConfigFilename: kubeConfigFilename,
+			httpDriver:         httpdriver.New(ctx, t, httpdriver.Option{}),
+			now:                now,
+		})
+		kubeconfig.Verify(t, kubeConfigFilename, kubeconfig.AuthProviderConfig{
+			IDToken:      sv.LastTokenResponse().IDToken,
+			RefreshToken: sv.LastTokenResponse().RefreshToken,
+		})
+	})
+}
+
+type standaloneConfig struct {
+	issuerURL          string
+	kubeConfigFilename string
+	httpDriver         browser.Interface
+	now                time.Time
+	args               []string
+}
+
+func runStandalone(t *testing.T, ctx context.Context, cfg standaloneConfig) {
+	cmd := di.NewCmdForHeadless(clock.Fake(cfg.now), os.Stdin, os.Stdout, logger.New(t), cfg.httpDriver)
+	exitCode := cmd.Run(ctx, append([]string{
+		"kubelogin",
+		"--kubeconfig", cfg.kubeConfigFilename,
+		"--listen-address", "127.0.0.1:0",
+	}, cfg.args...), "HEAD")
+	if exitCode != 0 {
+		t.Errorf("exit status wants 0 but %d", exitCode)
+	}
+}
+
+func setenv(t *testing.T, key, value string) {
+	t.Helper()
+	if err := os.Setenv(key, value); err != nil {
+		t.Fatalf("Could not set the env var %s=%s: %s", key, value, err)
+	}
+}
+
+func unsetenv(t *testing.T, key string) {
+	t.Helper()
+	if err := os.Unsetenv(key); err != nil {
+		t.Fatalf("Could not unset the env var %s: %s", key, err)
+	}
+}

pkg/adaptors/browser/browser.go

@@ -0,0 +1,33 @@
+package browser
+
+import (
+	"os"
+
+	"github.com/google/wire"
+	"github.com/pkg/browser"
+)
+
+//go:generate mockgen -destination mock_browser/mock_browser.go github.com/int128/kubelogin/pkg/adaptors/browser Interface
+
+func init() {
+	// In credential plugin mode, some browser launcher writes a message to stdout
+	// and it may break the credential json for client-go.
+	// This prevents the browser launcher from breaking the credential json.
+	browser.Stdout = os.Stderr
+}
+
+var Set = wire.NewSet(
+	wire.Struct(new(Browser)),
+	wire.Bind(new(Interface), new(*Browser)),
+)
+
+type Interface interface {
+	Open(url string) error
+}
+
+type Browser struct{}
+
+// Open opens the default browser.
+func (*Browser) Open(url string) error {
+	return browser.OpenURL(url)
+}

pkg/adaptors/browser/mock_browser/mock_browser.go

@@ -0,0 +1,47 @@
+// Code generated by MockGen. DO NOT EDIT.
+// Source: github.com/int128/kubelogin/pkg/adaptors/browser (interfaces: Interface)
+
+// Package mock_browser is a generated GoMock package.
+package mock_browser
+
+import (
+	gomock "github.com/golang/mock/gomock"
+	reflect "reflect"
+)
+
+// MockInterface is a mock of Interface interface.
+type MockInterface struct {
+	ctrl     *gomock.Controller
+	recorder *MockInterfaceMockRecorder
+}
+
+// MockInterfaceMockRecorder is the mock recorder for MockInterface.
+type MockInterfaceMockRecorder struct {
+	mock *MockInterface
+}
+
+// NewMockInterface creates a new mock instance.
+func NewMockInterface(ctrl *gomock.Controller) *MockInterface {
+	mock := &MockInterface{ctrl: ctrl}
+	mock.recorder = &MockInterfaceMockRecorder{mock}
+	return mock
+}
+
+// EXPECT returns an object that allows the caller to indicate expected use.
+func (m *MockInterface) EXPECT() *MockInterfaceMockRecorder {
+	return m.recorder
+}
+
+// Open mocks base method.
+func (m *MockInterface) Open(arg0 string) error {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "Open", arg0)
+	ret0, _ := ret[0].(error)
+	return ret0
+}
+
+// Open indicates an expected call of Open.
+func (mr *MockInterfaceMockRecorder) Open(arg0 interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Open", reflect.TypeOf((*MockInterface)(nil).Open), arg0)
+}

pkg/adaptors/certpool/cert.go

@@ -11,24 +11,19 @@ import (
 	"golang.org/x/xerrors"
 )
 
-//go:generate mockgen -destination mock_certpool/mock_certpool.go github.com/int128/kubelogin/pkg/adaptors/certpool FactoryInterface,Interface
+//go:generate mockgen -destination mock_certpool/mock_certpool.go github.com/int128/kubelogin/pkg/adaptors/certpool Interface
 
 // Set provides an implementation and interface.
 var Set = wire.NewSet(
-	wire.Struct(new(Factory), "*"),
-	wire.Bind(new(FactoryInterface), new(*Factory)),
+	wire.Value(NewFunc(New)),
 	wire.Struct(new(CertPool), "*"),
 	wire.Bind(new(Interface), new(*CertPool)),
 )
 
-type FactoryInterface interface {
-	New() Interface
-}
-
-type Factory struct{}
+type NewFunc func() Interface
 
 // New returns an instance which implements the Interface.
-func (f *Factory) New() Interface {
+func New() Interface {
 	return &CertPool{pool: x509.NewCertPool()}
 }
 

pkg/adaptors/certpool/cert_test.go

@@ -8,8 +8,7 @@ import (
 
 func TestCertPool_AddFile(t *testing.T) {
 	t.Run("Valid", func(t *testing.T) {
-		var f Factory
-		p := f.New()
+		p := New()
 		if err := p.AddFile("testdata/ca1.crt"); err != nil {
 			t.Errorf("AddFile error: %s", err)
 		}
@@ -20,8 +19,7 @@ func TestCertPool_AddFile(t *testing.T) {
 		}
 	})
 	t.Run("Invalid", func(t *testing.T) {
-		var f Factory
-		p := f.New()
+		p := New()
 		err := p.AddFile("testdata/Makefile")
 		if err == nil {
 			t.Errorf("AddFile wants an error but was nil")
@@ -30,8 +28,7 @@ func TestCertPool_AddFile(t *testing.T) {
 }
 
 func TestCertPool_AddBase64Encoded(t *testing.T) {
-	var f Factory
-	p := f.New()
+	p := New()
 	if err := p.AddBase64Encoded(readFile(t, "testdata/ca2.crt.base64")); err != nil {
 		t.Errorf("AddBase64Encoded error: %s", err)
 	}
@@ -43,8 +40,7 @@ func TestCertPool_AddBase64Encoded(t *testing.T) {
 }
 
 func TestCertPool_SetRootCAs(t *testing.T) {
-	var f Factory
-	p := f.New()
+	p := New()
 	var cfg tls.Config
 	p.SetRootCAs(&cfg)
 	if cfg.RootCAs != nil {

pkg/adaptors/certpool/mock_certpool/mock_certpool.go

@@ -1,5 +1,5 @@
 // Code generated by MockGen. DO NOT EDIT.
-// Source: github.com/int128/kubelogin/pkg/adaptors/certpool (interfaces: FactoryInterface,Interface)
+// Source: github.com/int128/kubelogin/pkg/adaptors/certpool (interfaces: Interface)
 
 // Package mock_certpool is a generated GoMock package.
 package mock_certpool
@@ -7,71 +7,33 @@ package mock_certpool
 import (
 	tls "crypto/tls"
 	gomock "github.com/golang/mock/gomock"
-	certpool "github.com/int128/kubelogin/pkg/adaptors/certpool"
 	reflect "reflect"
 )
 
-// MockFactoryInterface is a mock of FactoryInterface interface
-type MockFactoryInterface struct {
-	ctrl     *gomock.Controller
-	recorder *MockFactoryInterfaceMockRecorder
-}
-
-// MockFactoryInterfaceMockRecorder is the mock recorder for MockFactoryInterface
-type MockFactoryInterfaceMockRecorder struct {
-	mock *MockFactoryInterface
-}
-
-// NewMockFactoryInterface creates a new mock instance
-func NewMockFactoryInterface(ctrl *gomock.Controller) *MockFactoryInterface {
-	mock := &MockFactoryInterface{ctrl: ctrl}
-	mock.recorder = &MockFactoryInterfaceMockRecorder{mock}
-	return mock
-}
-
-// EXPECT returns an object that allows the caller to indicate expected use
-func (m *MockFactoryInterface) EXPECT() *MockFactoryInterfaceMockRecorder {
-	return m.recorder
-}
-
-// New mocks base method
-func (m *MockFactoryInterface) New() certpool.Interface {
-	m.ctrl.T.Helper()
-	ret := m.ctrl.Call(m, "New")
-	ret0, _ := ret[0].(certpool.Interface)
-	return ret0
-}
-
-// New indicates an expected call of New
-func (mr *MockFactoryInterfaceMockRecorder) New() *gomock.Call {
-	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "New", reflect.TypeOf((*MockFactoryInterface)(nil).New))
-}
-
-// MockInterface is a mock of Interface interface
+// MockInterface is a mock of Interface interface.
 type MockInterface struct {
 	ctrl     *gomock.Controller
 	recorder *MockInterfaceMockRecorder
 }
 
-// MockInterfaceMockRecorder is the mock recorder for MockInterface
+// MockInterfaceMockRecorder is the mock recorder for MockInterface.
 type MockInterfaceMockRecorder struct {
 	mock *MockInterface
 }
 
-// NewMockInterface creates a new mock instance
+// NewMockInterface creates a new mock instance.
 func NewMockInterface(ctrl *gomock.Controller) *MockInterface {
 	mock := &MockInterface{ctrl: ctrl}
 	mock.recorder = &MockInterfaceMockRecorder{mock}
 	return mock
 }
 
-// EXPECT returns an object that allows the caller to indicate expected use
+// EXPECT returns an object that allows the caller to indicate expected use.
 func (m *MockInterface) EXPECT() *MockInterfaceMockRecorder {
 	return m.recorder
 }
 
-// AddBase64Encoded mocks base method
+// AddBase64Encoded mocks base method.
 func (m *MockInterface) AddBase64Encoded(arg0 string) error {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "AddBase64Encoded", arg0)
@@ -79,13 +41,13 @@ func (m *MockInterface) AddBase64Encoded(arg0 string) error {
 	return ret0
 }
 
-// AddBase64Encoded indicates an expected call of AddBase64Encoded
+// AddBase64Encoded indicates an expected call of AddBase64Encoded.
 func (mr *MockInterfaceMockRecorder) AddBase64Encoded(arg0 interface{}) *gomock.Call {
 	mr.mock.ctrl.T.Helper()
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "AddBase64Encoded", reflect.TypeOf((*MockInterface)(nil).AddBase64Encoded), arg0)
 }
 
-// AddFile mocks base method
+// AddFile mocks base method.
 func (m *MockInterface) AddFile(arg0 string) error {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "AddFile", arg0)
@@ -93,19 +55,19 @@ func (m *MockInterface) AddFile(arg0 string) error {
 	return ret0
 }
 
-// AddFile indicates an expected call of AddFile
+// AddFile indicates an expected call of AddFile.
 func (mr *MockInterfaceMockRecorder) AddFile(arg0 interface{}) *gomock.Call {
 	mr.mock.ctrl.T.Helper()
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "AddFile", reflect.TypeOf((*MockInterface)(nil).AddFile), arg0)
 }
 
-// SetRootCAs mocks base method
+// SetRootCAs mocks base method.
 func (m *MockInterface) SetRootCAs(arg0 *tls.Config) {
 	m.ctrl.T.Helper()
 	m.ctrl.Call(m, "SetRootCAs", arg0)
 }
 
-// SetRootCAs indicates an expected call of SetRootCAs
+// SetRootCAs indicates an expected call of SetRootCAs.
 func (mr *MockInterfaceMockRecorder) SetRootCAs(arg0 interface{}) *gomock.Call {
 	mr.mock.ctrl.T.Helper()
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "SetRootCAs", reflect.TypeOf((*MockInterface)(nil).SetRootCAs), arg0)

pkg/adaptors/clock/clock.go

@@ -0,0 +1,24 @@
+// Package clock provides the system clock.
+package clock
+
+import (
+	"time"
+
+	"github.com/google/wire"
+)
+
+var Set = wire.NewSet(
+	wire.Struct(new(Real), "*"),
+	wire.Bind(new(Interface), new(*Real)),
+)
+
+type Interface interface {
+	Now() time.Time
+}
+
+type Real struct{}
+
+// Now returns the current time.
+func (c *Real) Now() time.Time {
+	return time.Now()
+}

pkg/adaptors/cmd/authentication.go

@@ -0,0 +1,87 @@
+package cmd
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/int128/kubelogin/pkg/usecases/authentication"
+	"github.com/int128/kubelogin/pkg/usecases/authentication/authcode"
+	"github.com/int128/kubelogin/pkg/usecases/authentication/ropc"
+	"github.com/spf13/pflag"
+	"golang.org/x/xerrors"
+)
+
+type authenticationOptions struct {
+	GrantType                  string
+	ListenAddress              []string
+	ListenPort                 []int // deprecated
+	SkipOpenBrowser            bool
+	OpenURLAfterAuthentication string
+	RedirectURLHostname        string
+	AuthRequestExtraParams     map[string]string
+	Username                   string
+	Password                   string
+}
+
+// determineListenAddress returns the addresses from the flags.
+// Note that --listen-address is always given due to the default value.
+// If --listen-port is not set, it returns --listen-address.
+// If --listen-port is set, it returns the strings of --listen-port.
+func (o *authenticationOptions) determineListenAddress() []string {
+	if len(o.ListenPort) == 0 {
+		return o.ListenAddress
+	}
+	var a []string
+	for _, p := range o.ListenPort {
+		a = append(a, fmt.Sprintf("127.0.0.1:%d", p))
+	}
+	return a
+}
+
+var allGrantType = strings.Join([]string{
+	"auto",
+	"authcode",
+	"authcode-keyboard",
+	"password",
+}, "|")
+
+func (o *authenticationOptions) addFlags(f *pflag.FlagSet) {
+	f.StringVar(&o.GrantType, "grant-type", "auto", fmt.Sprintf("Authorization grant type to use. One of (%s)", allGrantType))
+	f.StringSliceVar(&o.ListenAddress, "listen-address", defaultListenAddress, "[authcode] Address to bind to the local server. If multiple addresses are set, it will try binding in order")
+	//TODO: remove the deprecated flag
+	f.IntSliceVar(&o.ListenPort, "listen-port", nil, "[authcode] deprecated: port to bind to the local server")
+	if err := f.MarkDeprecated("listen-port", "use --listen-address instead"); err != nil {
+		panic(err)
+	}
+	f.BoolVar(&o.SkipOpenBrowser, "skip-open-browser", false, "[authcode] Do not open the browser automatically")
+	f.StringVar(&o.OpenURLAfterAuthentication, "open-url-after-authentication", "", "[authcode] If set, open the URL in the browser after authentication")
+	f.StringVar(&o.RedirectURLHostname, "oidc-redirect-url-hostname", "localhost", "[authcode] Hostname of the redirect URL")
+	f.StringToStringVar(&o.AuthRequestExtraParams, "oidc-auth-request-extra-params", nil, "[authcode, authcode-keyboard] Extra query parameters to send with an authentication request")
+	f.StringVar(&o.Username, "username", "", "[password] Username for resource owner password credentials grant")
+	f.StringVar(&o.Password, "password", "", "[password] Password for resource owner password credentials grant")
+}
+
+func (o *authenticationOptions) grantOptionSet() (s authentication.GrantOptionSet, err error) {
+	switch {
+	case o.GrantType == "authcode" || (o.GrantType == "auto" && o.Username == ""):
+		s.AuthCodeBrowserOption = &authcode.BrowserOption{
+			BindAddress:                o.determineListenAddress(),
+			SkipOpenBrowser:            o.SkipOpenBrowser,
+			OpenURLAfterAuthentication: o.OpenURLAfterAuthentication,
+			RedirectURLHostname:        o.RedirectURLHostname,
+			AuthRequestExtraParams:     o.AuthRequestExtraParams,
+		}
+	case o.GrantType == "authcode-keyboard":
+		s.AuthCodeKeyboardOption = &authcode.KeyboardOption{
+			AuthRequestExtraParams: o.AuthRequestExtraParams,
+		}
+	case o.GrantType == "password" || (o.GrantType == "auto" && o.Username != ""):
+		s.ROPCOption = &ropc.Option{
+			Username: o.Username,
+			Password: o.Password,
+		}
+	default:
+		err = xerrors.Errorf("grant-type must be one of (%s)", allGrantType)
+	}
+	return
+}

pkg/adaptors/cmd/cmd.go

@@ -2,8 +2,7 @@ package cmd
 
 import (
 	"context"
-	"fmt"
-	"path/filepath"
+	"runtime"
 
 	"github.com/google/wire"
 	"github.com/int128/kubelogin/pkg/adaptors/logger"
@@ -24,16 +23,9 @@ type Interface interface {
 	Run(ctx context.Context, args []string, version string) int
 }
 
-var defaultListenPort = []int{8000, 18000}
+var defaultListenAddress = []string{"127.0.0.1:8000", "127.0.0.1:18000"}
 var defaultTokenCacheDir = homedir.HomeDir() + "/.kube/cache/oidc-login"
 
-func translateListenPortToBindAddress(ports []int) (address []string) {
-	for _, p := range ports {
-		address = append(address, fmt.Sprintf("127.0.0.1:%d", p))
-	}
-	return
-}
-
 // Cmd provides interaction with command line interface (CLI).
 type Cmd struct {
 	Root     *Root
@@ -45,17 +37,15 @@ type Cmd struct {
 // Run parses the command line arguments and executes the specified use-case.
 // It returns an exit code, that is 0 on success or 1 on error.
 func (cmd *Cmd) Run(ctx context.Context, args []string, version string) int {
-	executable := filepath.Base(args[0])
-
-	rootCmd := cmd.Root.New(ctx, executable)
+	rootCmd := cmd.Root.New()
 	rootCmd.Version = version
 	rootCmd.SilenceUsage = true
 	rootCmd.SilenceErrors = true
 
-	getTokenCmd := cmd.GetToken.New(ctx)
+	getTokenCmd := cmd.GetToken.New()
 	rootCmd.AddCommand(getTokenCmd)
 
-	setupCmd := cmd.Setup.New(ctx)
+	setupCmd := cmd.Setup.New()
 	rootCmd.AddCommand(setupCmd)
 
 	versionCmd := &cobra.Command{
@@ -63,13 +53,13 @@ func (cmd *Cmd) Run(ctx context.Context, args []string, version string) int {
 		Short: "Print the version information",
 		Args:  cobra.NoArgs,
 		Run: func(*cobra.Command, []string) {
-			cmd.Logger.Printf("%s version %s", executable, version)
+			cmd.Logger.Printf("kubelogin version %s (%s %s_%s)", version, runtime.Version(), runtime.GOOS, runtime.GOARCH)
 		},
 	}
 	rootCmd.AddCommand(versionCmd)
 
 	rootCmd.SetArgs(args[1:])
-	if err := rootCmd.Execute(); err != nil {
+	if err := rootCmd.ExecuteContext(ctx); err != nil {
 		cmd.Logger.Printf("error: %s", err)
 		cmd.Logger.V(1).Infof("stacktrace: %+v", err)
 		return 1

pkg/adaptors/cmd/cmd_test.go

@@ -5,8 +5,10 @@ import (
 	"testing"
 
 	"github.com/golang/mock/gomock"
-	"github.com/int128/kubelogin/pkg/adaptors/logger/mock_logger"
+	"github.com/int128/kubelogin/pkg/testing/logger"
 	"github.com/int128/kubelogin/pkg/usecases/authentication"
+	"github.com/int128/kubelogin/pkg/usecases/authentication/authcode"
+	"github.com/int128/kubelogin/pkg/usecases/authentication/ropc"
 	"github.com/int128/kubelogin/pkg/usecases/credentialplugin"
 	"github.com/int128/kubelogin/pkg/usecases/credentialplugin/mock_credentialplugin"
 	"github.com/int128/kubelogin/pkg/usecases/standalone"
@@ -26,8 +28,41 @@ func TestCmd_Run(t *testing.T) {
 				args: []string{executable},
 				in: standalone.Input{
 					GrantOptionSet: authentication.GrantOptionSet{
-						AuthCodeOption: &authentication.AuthCodeOption{
-							BindAddress: []string{"127.0.0.1:8000", "127.0.0.1:18000"},
+						AuthCodeBrowserOption: &authcode.BrowserOption{
+							BindAddress:         defaultListenAddress,
+							RedirectURLHostname: "localhost",
+						},
+					},
+				},
+			},
+			"when --listen-port is set, it should convert the port to address": {
+				args: []string{
+					executable,
+					"--listen-port", "10080",
+					"--listen-port", "20080",
+				},
+				in: standalone.Input{
+					GrantOptionSet: authentication.GrantOptionSet{
+						AuthCodeBrowserOption: &authcode.BrowserOption{
+							BindAddress:         []string{"127.0.0.1:10080", "127.0.0.1:20080"},
+							RedirectURLHostname: "localhost",
+						},
+					},
+				},
+			},
+			"when --listen-port is set, it should ignore --listen-address flags": {
+				args: []string{
+					executable,
+					"--listen-port", "10080",
+					"--listen-port", "20080",
+					"--listen-address", "127.0.0.1:30080",
+					"--listen-address", "127.0.0.1:40080",
+				},
+				in: standalone.Input{
+					GrantOptionSet: authentication.GrantOptionSet{
+						AuthCodeBrowserOption: &authcode.BrowserOption{
+							BindAddress:         []string{"127.0.0.1:10080", "127.0.0.1:20080"},
+							RedirectURLHostname: "localhost",
 						},
 					},
 				},
@@ -38,12 +73,14 @@ func TestCmd_Run(t *testing.T) {
 					"--context", "hello.k8s.local",
 					"--user", "google",
 					"--certificate-authority", "/path/to/cacert",
+					"--certificate-authority-data", "BASE64ENCODED",
 					"--insecure-skip-tls-verify",
 					"-v1",
 					"--grant-type", "authcode",
-					"--listen-port", "10080",
-					"--listen-port", "20080",
+					"--listen-address", "127.0.0.1:10080",
+					"--listen-address", "127.0.0.1:20080",
 					"--skip-open-browser",
+					"--open-url-after-authentication", "https://example.com/success.html",
 					"--username", "USER",
 					"--password", "PASS",
 				},
@@ -52,11 +89,14 @@ func TestCmd_Run(t *testing.T) {
 					KubeconfigContext:  "hello.k8s.local",
 					KubeconfigUser:     "google",
 					CACertFilename:     "/path/to/cacert",
+					CACertData:         "BASE64ENCODED",
 					SkipTLSVerify:      true,
 					GrantOptionSet: authentication.GrantOptionSet{
-						AuthCodeOption: &authentication.AuthCodeOption{
-							BindAddress:     []string{"127.0.0.1:10080", "127.0.0.1:20080"},
-							SkipOpenBrowser: true,
+						AuthCodeBrowserOption: &authcode.BrowserOption{
+							BindAddress:                []string{"127.0.0.1:10080", "127.0.0.1:20080"},
+							SkipOpenBrowser:            true,
+							OpenURLAfterAuthentication: "https://example.com/success.html",
+							RedirectURLHostname:        "localhost",
 						},
 					},
 				},
@@ -67,21 +107,21 @@ func TestCmd_Run(t *testing.T) {
 				},
 				in: standalone.Input{
 					GrantOptionSet: authentication.GrantOptionSet{
-						AuthCodeKeyboardOption: &authentication.AuthCodeKeyboardOption{},
+						AuthCodeKeyboardOption: &authcode.KeyboardOption{},
 					},
 				},
 			},
 			"GrantType=password": {
 				args: []string{executable,
 					"--grant-type", "password",
-					"--listen-port", "10080",
-					"--listen-port", "20080",
+					"--listen-address", "127.0.0.1:10080",
+					"--listen-address", "127.0.0.1:20080",
 					"--username", "USER",
 					"--password", "PASS",
 				},
 				in: standalone.Input{
 					GrantOptionSet: authentication.GrantOptionSet{
-						ROPCOption: &authentication.ROPCOption{
+						ROPCOption: &ropc.Option{
 							Username: "USER",
 							Password: "PASS",
 						},
@@ -90,14 +130,14 @@ func TestCmd_Run(t *testing.T) {
 			},
 			"GrantType=auto": {
 				args: []string{executable,
-					"--listen-port", "10080",
-					"--listen-port", "20080",
+					"--listen-address", "127.0.0.1:10080",
+					"--listen-address", "127.0.0.1:20080",
 					"--username", "USER",
 					"--password", "PASS",
 				},
 				in: standalone.Input{
 					GrantOptionSet: authentication.GrantOptionSet{
-						ROPCOption: &authentication.ROPCOption{
+						ROPCOption: &ropc.Option{
 							Username: "USER",
 							Password: "PASS",
 						},
@@ -116,9 +156,9 @@ func TestCmd_Run(t *testing.T) {
 				cmd := Cmd{
 					Root: &Root{
 						Standalone: mockStandalone,
-						Logger:     mock_logger.New(t),
+						Logger:     logger.New(t),
 					},
-					Logger: mock_logger.New(t),
+					Logger: logger.New(t),
 				}
 				exitCode := cmd.Run(ctx, c.args, version)
 				if exitCode != 0 {
@@ -133,9 +173,9 @@ func TestCmd_Run(t *testing.T) {
 			cmd := Cmd{
 				Root: &Root{
 					Standalone: mock_standalone.NewMockInterface(ctrl),
-					Logger:     mock_logger.New(t),
+					Logger:     logger.New(t),
 				},
-				Logger: mock_logger.New(t),
+				Logger: logger.New(t),
 			}
 			exitCode := cmd.Run(context.TODO(), []string{executable, "some"}, version)
 			if exitCode != 1 {
@@ -160,8 +200,9 @@ func TestCmd_Run(t *testing.T) {
 					IssuerURL:     "https://issuer.example.com",
 					ClientID:      "YOUR_CLIENT_ID",
 					GrantOptionSet: authentication.GrantOptionSet{
-						AuthCodeOption: &authentication.AuthCodeOption{
-							BindAddress: []string{"127.0.0.1:8000", "127.0.0.1:18000"},
+						AuthCodeBrowserOption: &authcode.BrowserOption{
+							BindAddress:         []string{"127.0.0.1:8000", "127.0.0.1:18000"},
+							RedirectURLHostname: "localhost",
 						},
 					},
 				},
@@ -175,12 +216,16 @@ func TestCmd_Run(t *testing.T) {
 					"--oidc-extra-scope", "email",
 					"--oidc-extra-scope", "profile",
 					"--certificate-authority", "/path/to/cacert",
+					"--certificate-authority-data", "BASE64ENCODED",
 					"--insecure-skip-tls-verify",
 					"-v1",
 					"--grant-type", "authcode",
-					"--listen-port", "10080",
-					"--listen-port", "20080",
+					"--listen-address", "127.0.0.1:10080",
+					"--listen-address", "127.0.0.1:20080",
 					"--skip-open-browser",
+					"--open-url-after-authentication", "https://example.com/success.html",
+					"--oidc-auth-request-extra-params", "ttl=86400",
+					"--oidc-auth-request-extra-params", "reauth=true",
 					"--username", "USER",
 					"--password", "PASS",
 				},
@@ -191,11 +236,15 @@ func TestCmd_Run(t *testing.T) {
 					ClientSecret:   "YOUR_CLIENT_SECRET",
 					ExtraScopes:    []string{"email", "profile"},
 					CACertFilename: "/path/to/cacert",
+					CACertData:     "BASE64ENCODED",
 					SkipTLSVerify:  true,
 					GrantOptionSet: authentication.GrantOptionSet{
-						AuthCodeOption: &authentication.AuthCodeOption{
-							BindAddress:     []string{"127.0.0.1:10080", "127.0.0.1:20080"},
-							SkipOpenBrowser: true,
+						AuthCodeBrowserOption: &authcode.BrowserOption{
+							BindAddress:                []string{"127.0.0.1:10080", "127.0.0.1:20080"},
+							SkipOpenBrowser:            true,
+							OpenURLAfterAuthentication: "https://example.com/success.html",
+							RedirectURLHostname:        "localhost",
+							AuthRequestExtraParams:     map[string]string{"ttl": "86400", "reauth": "true"},
 						},
 					},
 				},
@@ -206,13 +255,16 @@ func TestCmd_Run(t *testing.T) {
 					"--oidc-issuer-url", "https://issuer.example.com",
 					"--oidc-client-id", "YOUR_CLIENT_ID",
 					"--grant-type", "authcode-keyboard",
+					"--oidc-auth-request-extra-params", "ttl=86400",
 				},
 				in: credentialplugin.Input{
 					TokenCacheDir: defaultTokenCacheDir,
 					IssuerURL:     "https://issuer.example.com",
 					ClientID:      "YOUR_CLIENT_ID",
 					GrantOptionSet: authentication.GrantOptionSet{
-						AuthCodeKeyboardOption: &authentication.AuthCodeKeyboardOption{},
+						AuthCodeKeyboardOption: &authcode.KeyboardOption{
+							AuthRequestExtraParams: map[string]string{"ttl": "86400"},
+						},
 					},
 				},
 			},
@@ -222,8 +274,8 @@ func TestCmd_Run(t *testing.T) {
 					"--oidc-issuer-url", "https://issuer.example.com",
 					"--oidc-client-id", "YOUR_CLIENT_ID",
 					"--grant-type", "password",
-					"--listen-port", "10080",
-					"--listen-port", "20080",
+					"--listen-address", "127.0.0.1:10080",
+					"--listen-address", "127.0.0.1:20080",
 					"--username", "USER",
 					"--password", "PASS",
 				},
@@ -232,7 +284,7 @@ func TestCmd_Run(t *testing.T) {
 					IssuerURL:     "https://issuer.example.com",
 					ClientID:      "YOUR_CLIENT_ID",
 					GrantOptionSet: authentication.GrantOptionSet{
-						ROPCOption: &authentication.ROPCOption{
+						ROPCOption: &ropc.Option{
 							Username: "USER",
 							Password: "PASS",
 						},
@@ -244,8 +296,8 @@ func TestCmd_Run(t *testing.T) {
 					"get-token",
 					"--oidc-issuer-url", "https://issuer.example.com",
 					"--oidc-client-id", "YOUR_CLIENT_ID",
-					"--listen-port", "10080",
-					"--listen-port", "20080",
+					"--listen-address", "127.0.0.1:10080",
+					"--listen-address", "127.0.0.1:20080",
 					"--username", "USER",
 					"--password", "PASS",
 				},
@@ -254,7 +306,7 @@ func TestCmd_Run(t *testing.T) {
 					IssuerURL:     "https://issuer.example.com",
 					ClientID:      "YOUR_CLIENT_ID",
 					GrantOptionSet: authentication.GrantOptionSet{
-						ROPCOption: &authentication.ROPCOption{
+						ROPCOption: &ropc.Option{
 							Username: "USER",
 							Password: "PASS",
 						},
@@ -272,13 +324,13 @@ func TestCmd_Run(t *testing.T) {
 					Do(ctx, c.in)
 				cmd := Cmd{
 					Root: &Root{
-						Logger: mock_logger.New(t),
+						Logger: logger.New(t),
 					},
 					GetToken: &GetToken{
 						GetToken: getToken,
-						Logger:   mock_logger.New(t),
+						Logger:   logger.New(t),
 					},
-					Logger: mock_logger.New(t),
+					Logger: logger.New(t),
 				}
 				exitCode := cmd.Run(ctx, c.args, version)
 				if exitCode != 0 {
@@ -293,13 +345,13 @@ func TestCmd_Run(t *testing.T) {
 			ctx := context.TODO()
 			cmd := Cmd{
 				Root: &Root{
-					Logger: mock_logger.New(t),
+					Logger: logger.New(t),
 				},
 				GetToken: &GetToken{
 					GetToken: mock_credentialplugin.NewMockInterface(ctrl),
-					Logger:   mock_logger.New(t),
+					Logger:   logger.New(t),
 				},
-				Logger: mock_logger.New(t),
+				Logger: logger.New(t),
 			}
 			exitCode := cmd.Run(ctx, []string{executable, "get-token"}, version)
 			if exitCode != 1 {
@@ -313,13 +365,13 @@ func TestCmd_Run(t *testing.T) {
 			ctx := context.TODO()
 			cmd := Cmd{
 				Root: &Root{
-					Logger: mock_logger.New(t),
+					Logger: logger.New(t),
 				},
 				GetToken: &GetToken{
 					GetToken: mock_credentialplugin.NewMockInterface(ctrl),
-					Logger:   mock_logger.New(t),
+					Logger:   logger.New(t),
 				},
-				Logger: mock_logger.New(t),
+				Logger: logger.New(t),
 			}
 			exitCode := cmd.Run(ctx, []string{executable, "get-token", "foo"}, version)
 			if exitCode != 1 {

pkg/adaptors/cmd/get_token.go

@@ -1,8 +1,6 @@
 package cmd
 
 import (
-	"context"
-
 	"github.com/int128/kubelogin/pkg/adaptors/logger"
 	"github.com/int128/kubelogin/pkg/usecases/credentialplugin"
 	"github.com/spf13/cobra"
@@ -16,22 +14,19 @@ type getTokenOptions struct {
 	ClientID              string
 	ClientSecret          string
 	ExtraScopes           []string
-	CertificateAuthority  string
-	SkipTLSVerify         bool
 	TokenCacheDir         string
+	tlsOptions            tlsOptions
 	authenticationOptions authenticationOptions
 }
 
-func (o *getTokenOptions) register(f *pflag.FlagSet) {
-	f.SortFlags = false
+func (o *getTokenOptions) addFlags(f *pflag.FlagSet) {
 	f.StringVar(&o.IssuerURL, "oidc-issuer-url", "", "Issuer URL of the provider (mandatory)")
 	f.StringVar(&o.ClientID, "oidc-client-id", "", "Client ID of the provider (mandatory)")
 	f.StringVar(&o.ClientSecret, "oidc-client-secret", "", "Client secret of the provider")
 	f.StringSliceVar(&o.ExtraScopes, "oidc-extra-scope", nil, "Scopes to request to the provider")
-	f.StringVar(&o.CertificateAuthority, "certificate-authority", "", "Path to a cert file for the certificate authority")
-	f.BoolVar(&o.SkipTLSVerify, "insecure-skip-tls-verify", false, "If true, the server's certificate will not be checked for validity. This will make your HTTPS connections insecure")
-	f.StringVar(&o.TokenCacheDir, "token-cache-dir", defaultTokenCacheDir, "Path to a directory for caching tokens")
-	o.authenticationOptions.register(f)
+	f.StringVar(&o.TokenCacheDir, "token-cache-dir", defaultTokenCacheDir, "Path to a directory for token cache")
+	o.tlsOptions.addFlags(f)
+	o.authenticationOptions.addFlags(f)
 }
 
 type GetToken struct {
@@ -39,7 +34,7 @@ type GetToken struct {
 	Logger   logger.Interface
 }
 
-func (cmd *GetToken) New(ctx context.Context) *cobra.Command {
+func (cmd *GetToken) New() *cobra.Command {
 	var o getTokenOptions
 	c := &cobra.Command{
 		Use:   "get-token [flags]",
@@ -56,27 +51,29 @@ func (cmd *GetToken) New(ctx context.Context) *cobra.Command {
 			}
 			return nil
 		},
-		RunE: func(*cobra.Command, []string) error {
+		RunE: func(c *cobra.Command, _ []string) error {
 			grantOptionSet, err := o.authenticationOptions.grantOptionSet()
 			if err != nil {
-				return xerrors.Errorf("error: %w", err)
+				return xerrors.Errorf("get-token: %w", err)
 			}
 			in := credentialplugin.Input{
 				IssuerURL:      o.IssuerURL,
 				ClientID:       o.ClientID,
 				ClientSecret:   o.ClientSecret,
 				ExtraScopes:    o.ExtraScopes,
-				CACertFilename: o.CertificateAuthority,
-				SkipTLSVerify:  o.SkipTLSVerify,
+				CACertFilename: o.tlsOptions.CACertFilename,
+				CACertData:     o.tlsOptions.CACertData,
+				SkipTLSVerify:  o.tlsOptions.SkipTLSVerify,
 				TokenCacheDir:  o.TokenCacheDir,
 				GrantOptionSet: grantOptionSet,
 			}
-			if err := cmd.GetToken.Do(ctx, in); err != nil {
-				return xerrors.Errorf("error: %w", err)
+			if err := cmd.GetToken.Do(c.Context(), in); err != nil {
+				return xerrors.Errorf("get-token: %w", err)
 			}
 			return nil
 		},
 	}
-	o.register(c.Flags())
+	c.Flags().SortFlags = false
+	o.addFlags(c.Flags())
 	return c
 }

pkg/adaptors/cmd/root.go

@@ -1,23 +1,18 @@
 package cmd
 
 import (
-	"context"
-	"fmt"
-	"strings"
-
 	"github.com/int128/kubelogin/pkg/adaptors/kubeconfig"
 	"github.com/int128/kubelogin/pkg/adaptors/logger"
-	"github.com/int128/kubelogin/pkg/usecases/authentication"
 	"github.com/int128/kubelogin/pkg/usecases/standalone"
 	"github.com/spf13/cobra"
 	"github.com/spf13/pflag"
 	"golang.org/x/xerrors"
 )
 
-const longDescription = `Login to the OpenID Connect provider.
+const rootDescription = `Log in to the OpenID Connect provider.
 
 You need to set up the OIDC provider, role binding, Kubernetes API server and kubeconfig.
-Run the following command to show the setup instruction:
+To show the setup instruction:
 
 	kubectl oidc-login setup
 
@@ -29,62 +24,16 @@ type rootOptions struct {
 	Kubeconfig            string
 	Context               string
 	User                  string
-	CertificateAuthority  string
-	SkipTLSVerify         bool
+	tlsOptions            tlsOptions
 	authenticationOptions authenticationOptions
 }
 
-func (o *rootOptions) register(f *pflag.FlagSet) {
-	f.SortFlags = false
+func (o *rootOptions) addFlags(f *pflag.FlagSet) {
 	f.StringVar(&o.Kubeconfig, "kubeconfig", "", "Path to the kubeconfig file")
-	f.StringVar(&o.Context, "context", "", "The name of the kubeconfig context to use")
-	f.StringVar(&o.User, "user", "", "The name of the kubeconfig user to use. Prior to --context")
-	f.StringVar(&o.CertificateAuthority, "certificate-authority", "", "Path to a cert file for the certificate authority")
-	f.BoolVar(&o.SkipTLSVerify, "insecure-skip-tls-verify", false, "If true, the server's certificate will not be checked for validity. This will make your HTTPS connections insecure")
-	o.authenticationOptions.register(f)
-}
-
-type authenticationOptions struct {
-	GrantType       string
-	ListenPort      []int
-	SkipOpenBrowser bool
-	Username        string
-	Password        string
-}
-
-var allGrantType = strings.Join([]string{
-	"auto",
-	"authcode",
-	"authcode-keyboard",
-	"password",
-}, "|")
-
-func (o *authenticationOptions) register(f *pflag.FlagSet) {
-	f.StringVar(&o.GrantType, "grant-type", "auto", fmt.Sprintf("The authorization grant type to use. One of (%s)", allGrantType))
-	f.IntSliceVar(&o.ListenPort, "listen-port", defaultListenPort, "Port to bind to the local server. If multiple ports are given, it will try the ports in order")
-	f.BoolVar(&o.SkipOpenBrowser, "skip-open-browser", false, "If true, it does not open the browser on authentication")
-	f.StringVar(&o.Username, "username", "", "If set, perform the resource owner password credentials grant")
-	f.StringVar(&o.Password, "password", "", "If set, use the password instead of asking it")
-}
-
-func (o *authenticationOptions) grantOptionSet() (s authentication.GrantOptionSet, err error) {
-	switch {
-	case o.GrantType == "authcode" || (o.GrantType == "auto" && o.Username == ""):
-		s.AuthCodeOption = &authentication.AuthCodeOption{
-			BindAddress:     translateListenPortToBindAddress(o.ListenPort),
-			SkipOpenBrowser: o.SkipOpenBrowser,
-		}
-	case o.GrantType == "authcode-keyboard":
-		s.AuthCodeKeyboardOption = &authentication.AuthCodeKeyboardOption{}
-	case o.GrantType == "password" || (o.GrantType == "auto" && o.Username != ""):
-		s.ROPCOption = &authentication.ROPCOption{
-			Username: o.Username,
-			Password: o.Password,
-		}
-	default:
-		err = xerrors.Errorf("grant-type must be one of (%s)", allGrantType)
-	}
-	return
+	f.StringVar(&o.Context, "context", "", "Name of the kubeconfig context to use")
+	f.StringVar(&o.User, "user", "", "Name of the kubeconfig user to use. Prior to --context")
+	o.tlsOptions.addFlags(f)
+	o.authenticationOptions.addFlags(f)
 }
 
 type Root struct {
@@ -92,14 +41,14 @@ type Root struct {
 	Logger     logger.Interface
 }
 
-func (cmd *Root) New(ctx context.Context, executable string) *cobra.Command {
+func (cmd *Root) New() *cobra.Command {
 	var o rootOptions
-	rootCmd := &cobra.Command{
-		Use:   executable,
-		Short: "Login to the OpenID Connect provider",
-		Long:  longDescription,
+	c := &cobra.Command{
+		Use:   "kubelogin",
+		Short: "Log in to the OpenID Connect provider",
+		Long:  rootDescription,
 		Args:  cobra.NoArgs,
-		RunE: func(*cobra.Command, []string) error {
+		RunE: func(c *cobra.Command, _ []string) error {
 			grantOptionSet, err := o.authenticationOptions.grantOptionSet()
 			if err != nil {
 				return xerrors.Errorf("invalid option: %w", err)
@@ -108,17 +57,19 @@ func (cmd *Root) New(ctx context.Context, executable string) *cobra.Command {
 				KubeconfigFilename: o.Kubeconfig,
 				KubeconfigContext:  kubeconfig.ContextName(o.Context),
 				KubeconfigUser:     kubeconfig.UserName(o.User),
-				CACertFilename:     o.CertificateAuthority,
-				SkipTLSVerify:      o.SkipTLSVerify,
+				CACertFilename:     o.tlsOptions.CACertFilename,
+				CACertData:         o.tlsOptions.CACertData,
+				SkipTLSVerify:      o.tlsOptions.SkipTLSVerify,
 				GrantOptionSet:     grantOptionSet,
 			}
-			if err := cmd.Standalone.Do(ctx, in); err != nil {
-				return xerrors.Errorf("error: %w", err)
+			if err := cmd.Standalone.Do(c.Context(), in); err != nil {
+				return xerrors.Errorf("login: %w", err)
 			}
 			return nil
 		},
 	}
-	o.register(rootCmd.Flags())
-	cmd.Logger.AddFlags(rootCmd.PersistentFlags())
-	return rootCmd
+	c.Flags().SortFlags = false
+	o.addFlags(c.Flags())
+	cmd.Logger.AddFlags(c.PersistentFlags())
+	return c
 }

pkg/adaptors/cmd/setup.go

@@ -1,8 +1,6 @@
 package cmd
 
 import (
-	"context"
-
 	"github.com/int128/kubelogin/pkg/usecases/setup"
 	"github.com/spf13/cobra"
 	"github.com/spf13/pflag"
@@ -15,27 +13,24 @@ type setupOptions struct {
 	ClientID              string
 	ClientSecret          string
 	ExtraScopes           []string
-	CertificateAuthority  string
-	SkipTLSVerify         bool
+	tlsOptions            tlsOptions
 	authenticationOptions authenticationOptions
 }
 
-func (o *setupOptions) register(f *pflag.FlagSet) {
-	f.SortFlags = false
+func (o *setupOptions) addFlags(f *pflag.FlagSet) {
 	f.StringVar(&o.IssuerURL, "oidc-issuer-url", "", "Issuer URL of the provider")
 	f.StringVar(&o.ClientID, "oidc-client-id", "", "Client ID of the provider")
 	f.StringVar(&o.ClientSecret, "oidc-client-secret", "", "Client secret of the provider")
 	f.StringSliceVar(&o.ExtraScopes, "oidc-extra-scope", nil, "Scopes to request to the provider")
-	f.StringVar(&o.CertificateAuthority, "certificate-authority", "", "Path to a cert file for the certificate authority")
-	f.BoolVar(&o.SkipTLSVerify, "insecure-skip-tls-verify", false, "If true, the server's certificate will not be checked for validity. This will make your HTTPS connections insecure")
-	o.authenticationOptions.register(f)
+	o.tlsOptions.addFlags(f)
+	o.authenticationOptions.addFlags(f)
 }
 
 type Setup struct {
 	Setup setup.Interface
 }
 
-func (cmd *Setup) New(ctx context.Context) *cobra.Command {
+func (cmd *Setup) New() *cobra.Command {
 	var o setupOptions
 	c := &cobra.Command{
 		Use:   "setup",
@@ -44,30 +39,32 @@ func (cmd *Setup) New(ctx context.Context) *cobra.Command {
 		RunE: func(c *cobra.Command, _ []string) error {
 			grantOptionSet, err := o.authenticationOptions.grantOptionSet()
 			if err != nil {
-				return xerrors.Errorf("error: %w", err)
+				return xerrors.Errorf("setup: %w", err)
 			}
 			in := setup.Stage2Input{
 				IssuerURL:      o.IssuerURL,
 				ClientID:       o.ClientID,
 				ClientSecret:   o.ClientSecret,
 				ExtraScopes:    o.ExtraScopes,
-				CACertFilename: o.CertificateAuthority,
-				SkipTLSVerify:  o.SkipTLSVerify,
+				CACertFilename: o.tlsOptions.CACertFilename,
+				CACertData:     o.tlsOptions.CACertData,
+				SkipTLSVerify:  o.tlsOptions.SkipTLSVerify,
 				GrantOptionSet: grantOptionSet,
 			}
-			if c.Flags().Lookup("listen-port").Changed {
-				in.ListenPortArgs = o.authenticationOptions.ListenPort
+			if c.Flags().Lookup("listen-address").Changed {
+				in.ListenAddressArgs = o.authenticationOptions.ListenAddress
 			}
 			if in.IssuerURL == "" || in.ClientID == "" {
 				cmd.Setup.DoStage1()
 				return nil
 			}
-			if err := cmd.Setup.DoStage2(ctx, in); err != nil {
-				return xerrors.Errorf("error: %w", err)
+			if err := cmd.Setup.DoStage2(c.Context(), in); err != nil {
+				return xerrors.Errorf("setup: %w", err)
 			}
 			return nil
 		},
 	}
-	o.register(c.Flags())
+	c.Flags().SortFlags = false
+	o.addFlags(c.Flags())
 	return c
 }

pkg/adaptors/cmd/tls.go

@@ -0,0 +1,15 @@
+package cmd
+
+import "github.com/spf13/pflag"
+
+type tlsOptions struct {
+	CACertFilename string
+	CACertData     string
+	SkipTLSVerify  bool
+}
+
+func (o *tlsOptions) addFlags(f *pflag.FlagSet) {
+	f.StringVar(&o.CACertFilename, "certificate-authority", "", "Path to a cert file for the certificate authority")
+	f.StringVar(&o.CACertData, "certificate-authority-data", "", "Base64 encoded cert for the certificate authority")
+	f.BoolVar(&o.SkipTLSVerify, "insecure-skip-tls-verify", false, "If set, the server's certificate will not be checked for validity. This will make your HTTPS connections insecure")
+}

pkg/adaptors/credentialplugin/credential_plugin.go

@@ -1,51 +0,0 @@
-// Package credentialplugin provides interaction with kubectl for a credential plugin.
-package credentialplugin
-
-import (
-	"encoding/json"
-	"os"
-	"time"
-
-	"github.com/google/wire"
-	"golang.org/x/xerrors"
-	"k8s.io/apimachinery/pkg/apis/meta/v1"
-	"k8s.io/client-go/pkg/apis/clientauthentication/v1beta1"
-)
-
-//go:generate mockgen -destination mock_credentialplugin/mock_credentialplugin.go github.com/int128/kubelogin/pkg/adaptors/credentialplugin Interface
-
-var Set = wire.NewSet(
-	wire.Struct(new(Interaction), "*"),
-	wire.Bind(new(Interface), new(*Interaction)),
-)
-
-type Interface interface {
-	Write(out Output) error
-}
-
-// Output represents an output object of the credential plugin.
-type Output struct {
-	Token  string
-	Expiry time.Time
-}
-
-type Interaction struct{}
-
-// Write writes the ExecCredential to standard output for kubectl.
-func (*Interaction) Write(out Output) error {
-	ec := &v1beta1.ExecCredential{
-		TypeMeta: v1.TypeMeta{
-			APIVersion: "client.authentication.k8s.io/v1beta1",
-			Kind:       "ExecCredential",
-		},
-		Status: &v1beta1.ExecCredentialStatus{
-			Token:               out.Token,
-			ExpirationTimestamp: &v1.Time{Time: out.Expiry},
-		},
-	}
-	e := json.NewEncoder(os.Stdout)
-	if err := e.Encode(ec); err != nil {
-		return xerrors.Errorf("could not write the ExecCredential: %w", err)
-	}
-	return nil
-}

pkg/adaptors/credentialpluginwriter/credential_plugin.go

@@ -0,0 +1,53 @@
+// Package credentialpluginwriter provides a writer for a credential plugin.
+package credentialpluginwriter
+
+import (
+	"encoding/json"
+	"time"
+
+	"github.com/google/wire"
+	"github.com/int128/kubelogin/pkg/adaptors/stdio"
+	"golang.org/x/xerrors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	clientauthenticationv1beta1 "k8s.io/client-go/pkg/apis/clientauthentication/v1beta1"
+)
+
+//go:generate mockgen -destination mock_credentialpluginwriter/mock_credentialpluginwriter.go github.com/int128/kubelogin/pkg/adaptors/credentialpluginwriter Interface
+
+var Set = wire.NewSet(
+	wire.Struct(new(Writer), "*"),
+	wire.Bind(new(Interface), new(*Writer)),
+)
+
+type Interface interface {
+	Write(out Output) error
+}
+
+// Output represents an output object of the credential plugin.
+type Output struct {
+	Token  string
+	Expiry time.Time
+}
+
+type Writer struct {
+	Stdout stdio.Stdout
+}
+
+// Write writes the ExecCredential to standard output for kubectl.
+func (w *Writer) Write(out Output) error {
+	ec := &clientauthenticationv1beta1.ExecCredential{
+		TypeMeta: metav1.TypeMeta{
+			APIVersion: "client.authentication.k8s.io/v1beta1",
+			Kind:       "ExecCredential",
+		},
+		Status: &clientauthenticationv1beta1.ExecCredentialStatus{
+			Token:               out.Token,
+			ExpirationTimestamp: &metav1.Time{Time: out.Expiry},
+		},
+	}
+	e := json.NewEncoder(w.Stdout)
+	if err := e.Encode(ec); err != nil {
+		return xerrors.Errorf("could not write the ExecCredential: %w", err)
+	}
+	return nil
+}

pkg/adaptors/credentialpluginwriter/mock_credentialpluginwriter/mock_credentialpluginwriter.go

@@ -1,47 +1,47 @@
 // Code generated by MockGen. DO NOT EDIT.
-// Source: github.com/int128/kubelogin/pkg/adaptors/credentialplugin (interfaces: Interface)
+// Source: github.com/int128/kubelogin/pkg/adaptors/credentialpluginwriter (interfaces: Interface)
 
-// Package mock_credentialplugin is a generated GoMock package.
-package mock_credentialplugin
+// Package mock_credentialpluginwriter is a generated GoMock package.
+package mock_credentialpluginwriter
 
 import (
 	gomock "github.com/golang/mock/gomock"
-	credentialplugin "github.com/int128/kubelogin/pkg/adaptors/credentialplugin"
+	credentialpluginwriter "github.com/int128/kubelogin/pkg/adaptors/credentialpluginwriter"
 	reflect "reflect"
 )
 
-// MockInterface is a mock of Interface interface
+// MockInterface is a mock of Interface interface.
 type MockInterface struct {
 	ctrl     *gomock.Controller
 	recorder *MockInterfaceMockRecorder
 }
 
-// MockInterfaceMockRecorder is the mock recorder for MockInterface
+// MockInterfaceMockRecorder is the mock recorder for MockInterface.
 type MockInterfaceMockRecorder struct {
 	mock *MockInterface
 }
 
-// NewMockInterface creates a new mock instance
+// NewMockInterface creates a new mock instance.
 func NewMockInterface(ctrl *gomock.Controller) *MockInterface {
 	mock := &MockInterface{ctrl: ctrl}
 	mock.recorder = &MockInterfaceMockRecorder{mock}
 	return mock
 }
 
-// EXPECT returns an object that allows the caller to indicate expected use
+// EXPECT returns an object that allows the caller to indicate expected use.
 func (m *MockInterface) EXPECT() *MockInterfaceMockRecorder {
 	return m.recorder
 }
 
-// Write mocks base method
-func (m *MockInterface) Write(arg0 credentialplugin.Output) error {
+// Write mocks base method.
+func (m *MockInterface) Write(arg0 credentialpluginwriter.Output) error {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "Write", arg0)
 	ret0, _ := ret[0].(error)
 	return ret0
 }
 
-// Write indicates an expected call of Write
+// Write indicates an expected call of Write.
 func (mr *MockInterfaceMockRecorder) Write(arg0 interface{}) *gomock.Call {
 	mr.mock.ctrl.T.Helper()
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Write", reflect.TypeOf((*MockInterface)(nil).Write), arg0)

pkg/adaptors/env/env.go

@@ -1,76 +0,0 @@
-// Package env provides environment dependent facilities.
-package env
-
-import (
-	"bufio"
-	"fmt"
-	"os"
-	"strings"
-	"syscall"
-
-	"github.com/google/wire"
-	"github.com/pkg/browser"
-	"golang.org/x/crypto/ssh/terminal"
-	"golang.org/x/xerrors"
-)
-
-//go:generate mockgen -destination mock_env/mock_env.go github.com/int128/kubelogin/pkg/adaptors/env Interface
-
-func init() {
-	// In credential plugin mode, some browser launcher writes a message to stdout
-	// and it may break the credential json for client-go.
-	// This prevents the browser launcher from breaking the credential json.
-	browser.Stdout = os.Stderr
-}
-
-// Set provides an implementation and interface for Env.
-var Set = wire.NewSet(
-	wire.Struct(new(Env), "*"),
-	wire.Bind(new(Interface), new(*Env)),
-)
-
-type Interface interface {
-	ReadString(prompt string) (string, error)
-	ReadPassword(prompt string) (string, error)
-	OpenBrowser(url string) error
-}
-
-// Env provides environment specific facilities.
-type Env struct{}
-
-// ReadString reads a string from the stdin.
-func (*Env) ReadString(prompt string) (string, error) {
-	if _, err := fmt.Fprint(os.Stderr, prompt); err != nil {
-		return "", xerrors.Errorf("could not write the prompt: %w", err)
-	}
-	r := bufio.NewReader(os.Stdin)
-	s, err := r.ReadString('\n')
-	if err != nil {
-		return "", xerrors.Errorf("could not read from stdin: %w", err)
-	}
-	s = strings.TrimRight(s, "\r\n")
-	return s, nil
-}
-
-// ReadPassword reads a password from the stdin without echo back.
-func (*Env) ReadPassword(prompt string) (string, error) {
-	if _, err := fmt.Fprint(os.Stderr, prompt); err != nil {
-		return "", xerrors.Errorf("could not write the prompt: %w", err)
-	}
-	b, err := terminal.ReadPassword(int(syscall.Stdin))
-	if err != nil {
-		return "", xerrors.Errorf("could not read from stdin: %w", err)
-	}
-	if _, err := fmt.Fprintln(os.Stderr); err != nil {
-		return "", xerrors.Errorf("could not write a new line: %w", err)
-	}
-	return string(b), nil
-}
-
-// OpenBrowser opens the default browser.
-func (env *Env) OpenBrowser(url string) error {
-	if err := browser.OpenURL(url); err != nil {
-		return xerrors.Errorf("could not open the browser: %w", err)
-	}
-	return nil
-}

pkg/adaptors/jwtdecoder/decoder.go

@@ -1,74 +0,0 @@
-// Package jwtdecoder provides decoding a JWT.
-package jwtdecoder
-
-import (
-	"bytes"
-	"encoding/json"
-	"fmt"
-	"strings"
-	"time"
-
-	"github.com/dgrijalva/jwt-go"
-	"github.com/google/wire"
-	"golang.org/x/xerrors"
-)
-
-//go:generate mockgen -destination mock_jwtdecoder/mock_jwtdecoder.go github.com/int128/kubelogin/pkg/adaptors/jwtdecoder Interface
-
-// Set provides an implementation and interface.
-var Set = wire.NewSet(
-	wire.Struct(new(Decoder), "*"),
-	wire.Bind(new(Interface), new(*Decoder)),
-)
-
-type Interface interface {
-	Decode(s string) (*Claims, error)
-}
-
-// Claims represents claims of a token.
-type Claims struct {
-	Subject string
-	Expiry  time.Time
-	Pretty  map[string]string // string representation for debug and logging
-}
-
-type Decoder struct{}
-
-// Decode returns the claims of the JWT.
-// Note that this method does not verify the signature and always trust it.
-func (d *Decoder) Decode(s string) (*Claims, error) {
-	parts := strings.Split(s, ".")
-	if len(parts) != 3 {
-		return nil, xerrors.Errorf("token contains an invalid number of segments")
-	}
-	b, err := jwt.DecodeSegment(parts[1])
-	if err != nil {
-		return nil, xerrors.Errorf("could not decode the token: %w", err)
-	}
-	var claims jwt.StandardClaims
-	if err := json.NewDecoder(bytes.NewBuffer(b)).Decode(&claims); err != nil {
-		return nil, xerrors.Errorf("could not decode the json of token: %w", err)
-	}
-	var rawClaims map[string]interface{}
-	if err := json.NewDecoder(bytes.NewBuffer(b)).Decode(&rawClaims); err != nil {
-		return nil, xerrors.Errorf("could not decode the json of token: %w", err)
-	}
-	return &Claims{
-		Subject: claims.Subject,
-		Expiry:  time.Unix(claims.ExpiresAt, 0),
-		Pretty:  dumpRawClaims(rawClaims),
-	}, nil
-}
-
-func dumpRawClaims(rawClaims map[string]interface{}) map[string]string {
-	claims := make(map[string]string)
-	for k, v := range rawClaims {
-		switch v := v.(type) {
-		case float64:
-			claims[k] = fmt.Sprintf("%.f", v)
-		default:
-			claims[k] = fmt.Sprintf("%v", v)
-		}
-	}
-	return claims
-}

pkg/adaptors/jwtdecoder/decoder_test.go

@@ -1,87 +0,0 @@
-package jwtdecoder
-
-import (
-	"crypto/rsa"
-	"crypto/x509"
-	"encoding/pem"
-	"io/ioutil"
-	"testing"
-	"time"
-
-	"github.com/dgrijalva/jwt-go"
-)
-
-func TestDecoder_Decode(t *testing.T) {
-	var decoder Decoder
-
-	t.Run("ValidToken", func(t *testing.T) {
-		expiry := time.Now().Round(time.Second)
-		idToken := newIDToken(t, "https://issuer.example.com", expiry)
-		decodedToken, err := decoder.Decode(idToken)
-		if err != nil {
-			t.Fatalf("Decode error: %s", err)
-		}
-		if decodedToken.Expiry != expiry {
-			t.Errorf("Expiry wants %s but %s", expiry, decodedToken.Expiry)
-		}
-		t.Logf("Pretty=%+v", decodedToken.Pretty)
-	})
-	t.Run("InvalidToken", func(t *testing.T) {
-		decodedToken, err := decoder.Decode("HEADER.INVALID_TOKEN.SIGNATURE")
-		if err == nil {
-			t.Errorf("error wants non-nil but nil")
-		} else {
-			t.Logf("expected error: %+v", err)
-		}
-		if decodedToken != nil {
-			t.Errorf("decodedToken wants nil but %+v", decodedToken)
-		}
-	})
-}
-
-func newIDToken(t *testing.T, issuer string, expiry time.Time) string {
-	t.Helper()
-	claims := struct {
-		jwt.StandardClaims
-		Nonce         string   `json:"nonce"`
-		Groups        []string `json:"groups"`
-		EmailVerified bool     `json:"email_verified"`
-	}{
-		StandardClaims: jwt.StandardClaims{
-			Issuer:    issuer,
-			Audience:  "kubernetes",
-			Subject:   "SUBJECT",
-			IssuedAt:  time.Now().Unix(),
-			ExpiresAt: expiry.Unix(),
-		},
-		Nonce:         "NONCE",
-		Groups:        []string{"admin", "users"},
-		EmailVerified: false,
-	}
-	token := jwt.NewWithClaims(jwt.SigningMethodRS256, claims)
-	s, err := token.SignedString(readPrivateKey(t, "testdata/jws.key"))
-	if err != nil {
-		t.Fatalf("Could not sign the claims: %s", err)
-	}
-	return s
-}
-
-func readPrivateKey(t *testing.T, name string) *rsa.PrivateKey {
-	t.Helper()
-	b, err := ioutil.ReadFile(name)
-	if err != nil {
-		t.Fatalf("could not read the file: %s", err)
-	}
-	block, rest := pem.Decode(b)
-	if block == nil {
-		t.Fatalf("could not decode PEM")
-	}
-	if len(rest) > 0 {
-		t.Fatalf("PEM should contain single key but multiple keys")
-	}
-	k, err := x509.ParsePKCS1PrivateKey(block.Bytes)
-	if err != nil {
-		t.Fatalf("could not parse the key: %s", err)
-	}
-	return k
-}

pkg/adaptors/jwtdecoder/mock_jwtdecoder/mock_jwtdecoder.go

@@ -1,49 +0,0 @@
-// Code generated by MockGen. DO NOT EDIT.
-// Source: github.com/int128/kubelogin/pkg/adaptors/jwtdecoder (interfaces: Interface)
-
-// Package mock_jwtdecoder is a generated GoMock package.
-package mock_jwtdecoder
-
-import (
-	gomock "github.com/golang/mock/gomock"
-	jwtdecoder "github.com/int128/kubelogin/pkg/adaptors/jwtdecoder"
-	reflect "reflect"
-)
-
-// MockInterface is a mock of Interface interface
-type MockInterface struct {
-	ctrl     *gomock.Controller
-	recorder *MockInterfaceMockRecorder
-}
-
-// MockInterfaceMockRecorder is the mock recorder for MockInterface
-type MockInterfaceMockRecorder struct {
-	mock *MockInterface
-}
-
-// NewMockInterface creates a new mock instance
-func NewMockInterface(ctrl *gomock.Controller) *MockInterface {
-	mock := &MockInterface{ctrl: ctrl}
-	mock.recorder = &MockInterfaceMockRecorder{mock}
-	return mock
-}
-
-// EXPECT returns an object that allows the caller to indicate expected use
-func (m *MockInterface) EXPECT() *MockInterfaceMockRecorder {
-	return m.recorder
-}
-
-// Decode mocks base method
-func (m *MockInterface) Decode(arg0 string) (*jwtdecoder.Claims, error) {
-	m.ctrl.T.Helper()
-	ret := m.ctrl.Call(m, "Decode", arg0)
-	ret0, _ := ret[0].(*jwtdecoder.Claims)
-	ret1, _ := ret[1].(error)
-	return ret0, ret1
-}
-
-// Decode indicates an expected call of Decode
-func (mr *MockInterfaceMockRecorder) Decode(arg0 interface{}) *gomock.Call {
-	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Decode", reflect.TypeOf((*MockInterface)(nil).Decode), arg0)
-}

pkg/adaptors/jwtdecoder/testdata/Makefile

@@ -1,8 +0,0 @@
-all: jws.key
-
-jws.key:
-	openssl genrsa -out $@ 1024
-
-.PHONY: clean
-clean:
-	-rm -v jws.key

pkg/adaptors/jwtdecoder/testdata/jws.key

@@ -1,15 +0,0 @@
------BEGIN RSA PRIVATE KEY-----
-MIICXAIBAAKBgQCrH34yA/f/sBOUlkYnRtd2jgDZ3WivhidqvoQaa73xqTazbkn6
-GZ9r7jx0CGLRV2bmErj2WoyT54yrhezrKh0YXAHlrwLdsmV4dwiV0lOfUJd9P/vF
-e2hiAWv4CcO9ZuNkTsrxM5W8Wdj2tjqOvsIn4We+HWPkpknT7VtT5RrumwIDAQAB
-AoGAFqy5oA7+kZbXQV0YNqQgcMkoO7Ym5Ps1xeMwxf94z8jIQsZebxFuGnMa95UU
-4wBd1ias85fUANUxwpigaBjQee5Hk+dnfUe1snUWYNm9H6tKrXEF8ajer3a2knEv
-GfK0CSEumFougfW2xG88ChGTS60wc+MIRfXERCvWpGm/5EECQQDdv5IBSi89g/R1
-5AGZKFCoqr6Zw5bWEKPzCCYJZzncR1ER9vP2AnMExM8Io/87WYvmpZIUrXJvQYm8
-hkfVOcBZAkEAxY4VcqmRWru3zmnbj21MwcwtgESaONkWsHeYs1C/Y/3zt7TuelYz
-ZJ9aUuUsaiJLEs9Y26nMt0L0snWGr2noEwJBANaDp1PWFyMUTt3pB17JcFXqb15C
-pt1I1cGapWk9Uez1lMijNNhNAEWhuoKqW5Nnif5DN7EHJYfZR8x3vm/YYWkCQHAA
-0iAkCwjKDLe2RIjYiwAE5ncmbdl1GuwJokVnrlrei+LHbb1mSdTuk6MT006JCs8r
-R1GivzHXgCv9fdLN1IkCQHxRvv9RPND80eEkdMv4qu0s22OLRhLQ/pb+YeT5Cjjv
-pJYWKrvXdRZcuNde9JiiTgK2UW1wM8KeD/EGvK2yF6M=
------END RSA PRIVATE KEY-----

pkg/adaptors/kubeconfig/load.go

@@ -11,7 +11,7 @@ import (
 func (*Kubeconfig) GetCurrentAuthProvider(explicitFilename string, contextName ContextName, userName UserName) (*AuthProvider, error) {
 	config, err := loadByDefaultRules(explicitFilename)
 	if err != nil {
-		return nil, xerrors.Errorf("could not load kubeconfig: %w", err)
+		return nil, xerrors.Errorf("could not load the kubeconfig: %w", err)
 	}
 	auth, err := findCurrentAuthProvider(config, contextName, userName)
 	if err != nil {
@@ -25,7 +25,7 @@ func loadByDefaultRules(explicitFilename string) (*api.Config, error) {
 	rules.ExplicitPath = explicitFilename
 	config, err := rules.Load()
 	if err != nil {
-		return nil, xerrors.Errorf("error while loading config: %w", err)
+		return nil, xerrors.Errorf("load error: %w", err)
 	}
 	return config, err
 }

pkg/adaptors/kubeconfig/load_test.go

@@ -4,7 +4,7 @@ import (
 	"os"
 	"testing"
 
-	"github.com/go-test/deep"
+	"github.com/google/go-cmp/cmp"
 	"k8s.io/client-go/tools/clientcmd/api"
 )
 
@@ -76,7 +76,7 @@ func unsetenv(t *testing.T, key string) {
 
 func Test_findCurrentAuthProvider(t *testing.T) {
 	t.Run("CurrentContext", func(t *testing.T) {
-		auth, err := findCurrentAuthProvider(&api.Config{
+		got, err := findCurrentAuthProvider(&api.Config{
 			CurrentContext: "theContext",
 			Contexts: map[string]*api.Context{
 				"theContext": {
@@ -118,13 +118,13 @@ func Test_findCurrentAuthProvider(t *testing.T) {
 			IDToken:                     "YOUR_ID_TOKEN",
 			RefreshToken:                "YOUR_REFRESH_TOKEN",
 		}
-		if diff := deep.Equal(want, auth); diff != nil {
-			t.Error(diff)
+		if diff := cmp.Diff(want, got); diff != "" {
+			t.Errorf("mismatch (-want +got):\n%s", diff)
 		}
 	})
 
 	t.Run("ByContextName", func(t *testing.T) {
-		auth, err := findCurrentAuthProvider(&api.Config{
+		got, err := findCurrentAuthProvider(&api.Config{
 			Contexts: map[string]*api.Context{
 				"theContext": {
 					AuthInfo: "theUser",
@@ -151,13 +151,13 @@ func Test_findCurrentAuthProvider(t *testing.T) {
 			ContextName:      "theContext",
 			IDPIssuerURL:     "https://accounts.google.com",
 		}
-		if diff := deep.Equal(want, auth); diff != nil {
-			t.Error(diff)
+		if diff := cmp.Diff(want, got); diff != "" {
+			t.Errorf("mismatch (-want +got):\n%s", diff)
 		}
 	})
 
 	t.Run("ByUserName", func(t *testing.T) {
-		auth, err := findCurrentAuthProvider(&api.Config{
+		got, err := findCurrentAuthProvider(&api.Config{
 			AuthInfos: map[string]*api.AuthInfo{
 				"theUser": {
 					LocationOfOrigin: "/path/to/kubeconfig",
@@ -178,8 +178,8 @@ func Test_findCurrentAuthProvider(t *testing.T) {
 			UserName:         "theUser",
 			IDPIssuerURL:     "https://accounts.google.com",
 		}
-		if diff := deep.Equal(want, auth); diff != nil {
-			t.Error(diff)
+		if diff := cmp.Diff(want, got); diff != "" {
+			t.Errorf("mismatch (-want +got):\n%s", diff)
 		}
 	})
 

pkg/adaptors/kubeconfig/mock_kubeconfig/mock_kubeconfig.go

@@ -10,30 +10,30 @@ import (
 	reflect "reflect"
 )
 
-// MockInterface is a mock of Interface interface
+// MockInterface is a mock of Interface interface.
 type MockInterface struct {
 	ctrl     *gomock.Controller
 	recorder *MockInterfaceMockRecorder
 }
 
-// MockInterfaceMockRecorder is the mock recorder for MockInterface
+// MockInterfaceMockRecorder is the mock recorder for MockInterface.
 type MockInterfaceMockRecorder struct {
 	mock *MockInterface
 }
 
-// NewMockInterface creates a new mock instance
+// NewMockInterface creates a new mock instance.
 func NewMockInterface(ctrl *gomock.Controller) *MockInterface {
 	mock := &MockInterface{ctrl: ctrl}
 	mock.recorder = &MockInterfaceMockRecorder{mock}
 	return mock
 }
 
-// EXPECT returns an object that allows the caller to indicate expected use
+// EXPECT returns an object that allows the caller to indicate expected use.
 func (m *MockInterface) EXPECT() *MockInterfaceMockRecorder {
 	return m.recorder
 }
 
-// GetCurrentAuthProvider mocks base method
+// GetCurrentAuthProvider mocks base method.
 func (m *MockInterface) GetCurrentAuthProvider(arg0 string, arg1 kubeconfig.ContextName, arg2 kubeconfig.UserName) (*kubeconfig.AuthProvider, error) {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "GetCurrentAuthProvider", arg0, arg1, arg2)
@@ -42,13 +42,13 @@ func (m *MockInterface) GetCurrentAuthProvider(arg0 string, arg1 kubeconfig.Cont
 	return ret0, ret1
 }
 
-// GetCurrentAuthProvider indicates an expected call of GetCurrentAuthProvider
+// GetCurrentAuthProvider indicates an expected call of GetCurrentAuthProvider.
 func (mr *MockInterfaceMockRecorder) GetCurrentAuthProvider(arg0, arg1, arg2 interface{}) *gomock.Call {
 	mr.mock.ctrl.T.Helper()
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "GetCurrentAuthProvider", reflect.TypeOf((*MockInterface)(nil).GetCurrentAuthProvider), arg0, arg1, arg2)
 }
 
-// UpdateAuthProvider mocks base method
+// UpdateAuthProvider mocks base method.
 func (m *MockInterface) UpdateAuthProvider(arg0 *kubeconfig.AuthProvider) error {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "UpdateAuthProvider", arg0)
@@ -56,7 +56,7 @@ func (m *MockInterface) UpdateAuthProvider(arg0 *kubeconfig.AuthProvider) error
 	return ret0
 }
 
-// UpdateAuthProvider indicates an expected call of UpdateAuthProvider
+// UpdateAuthProvider indicates an expected call of UpdateAuthProvider.
 func (mr *MockInterfaceMockRecorder) UpdateAuthProvider(arg0 interface{}) *gomock.Call {
 	mr.mock.ctrl.T.Helper()
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "UpdateAuthProvider", reflect.TypeOf((*MockInterface)(nil).UpdateAuthProvider), arg0)

pkg/adaptors/kubeconfig/write_test.go

@@ -4,6 +4,8 @@ import (
 	"io/ioutil"
 	"os"
 	"testing"
+
+	"github.com/google/go-cmp/cmp"
 )
 
 func TestKubeconfig_UpdateAuth(t *testing.T) {
@@ -32,9 +34,10 @@ func TestKubeconfig_UpdateAuth(t *testing.T) {
 			t.Fatalf("Could not read kubeconfig: %s", err)
 		}
 
+		got := string(b)
 		want := `apiVersion: v1
-clusters: []
-contexts: []
+clusters: null
+contexts: null
 current-context: ""
 kind: Config
 preferences: {}
@@ -50,8 +53,8 @@ users:
         refresh-token: YOUR_REFRESH_TOKEN
       name: oidc
 `
-		if want != string(b) {
-			t.Errorf("---- kubeconfig wants ----\n%s\n---- but ----\n%s", want, string(b))
+		if diff := cmp.Diff(want, got); diff != "" {
+			t.Errorf("kubeconfig mismatch (-want +got):\n%s", diff)
 		}
 	})
 
@@ -81,9 +84,10 @@ users:
 			t.Fatalf("Could not read kubeconfig: %s", err)
 		}
 
+		got := string(b)
 		want := `apiVersion: v1
-clusters: []
-contexts: []
+clusters: null
+contexts: null
 current-context: ""
 kind: Config
 preferences: {}
@@ -102,8 +106,8 @@ users:
         refresh-token: YOUR_REFRESH_TOKEN
       name: oidc
 `
-		if want != string(b) {
-			t.Errorf("---- kubeconfig wants ----\n%s\n---- but ----\n%s", want, string(b))
+		if diff := cmp.Diff(want, got); diff != "" {
+			t.Errorf("kubeconfig mismatch (-want +got):\n%s", diff)
 		}
 	})
 }

pkg/adaptors/oidcclient/factory.go

@@ -4,16 +4,24 @@ package oidcclient
 import (
 	"context"
 	"crypto/tls"
+	"fmt"
 	"net/http"
 
 	"github.com/coreos/go-oidc"
+	"github.com/google/wire"
 	"github.com/int128/kubelogin/pkg/adaptors/certpool"
+	"github.com/int128/kubelogin/pkg/adaptors/clock"
 	"github.com/int128/kubelogin/pkg/adaptors/logger"
 	"github.com/int128/kubelogin/pkg/adaptors/oidcclient/logging"
 	"golang.org/x/oauth2"
 	"golang.org/x/xerrors"
 )
 
+var Set = wire.NewSet(
+	wire.Struct(new(Factory), "*"),
+	wire.Bind(new(FactoryInterface), new(*Factory)),
+)
+
 type FactoryInterface interface {
 	New(ctx context.Context, config Config) (Interface, error)
 }
@@ -29,6 +37,7 @@ type Config struct {
 }
 
 type Factory struct {
+	Clock  clock.Interface
 	Logger logger.Interface
 }
 
@@ -52,7 +61,11 @@ func (f *Factory) New(ctx context.Context, config Config) (Interface, error) {
 	ctx = context.WithValue(ctx, oauth2.HTTPClient, httpClient)
 	provider, err := oidc.NewProvider(ctx, config.IssuerURL)
 	if err != nil {
-		return nil, xerrors.Errorf("could not discovery the OIDCClientFactory issuer: %w", err)
+		return nil, xerrors.Errorf("oidc discovery error: %w", err)
+	}
+	supportedPKCEMethods, err := extractSupportedPKCEMethods(provider)
+	if err != nil {
+		return nil, xerrors.Errorf("could not determine supported PKCE methods: %w", err)
 	}
 	return &client{
 		httpClient: httpClient,
@@ -63,6 +76,18 @@ func (f *Factory) New(ctx context.Context, config Config) (Interface, error) {
 			ClientSecret: config.ClientSecret,
 			Scopes:       append(config.ExtraScopes, oidc.ScopeOpenID),
 		},
-		logger: f.Logger,
+		clock:                f.Clock,
+		logger:               f.Logger,
+		supportedPKCEMethods: supportedPKCEMethods,
 	}, nil
 }
+
+func extractSupportedPKCEMethods(provider *oidc.Provider) ([]string, error) {
+	var d struct {
+		CodeChallengeMethodsSupported []string `json:"code_challenge_methods_supported"`
+	}
+	if err := provider.Claims(&d); err != nil {
+		return nil, fmt.Errorf("invalid discovery document: %w", err)
+	}
+	return d.CodeChallengeMethodsSupported, nil
+}

pkg/adaptors/oidcclient/logging/transport_test.go

@@ -8,7 +8,7 @@ import (
 	"testing"
 
 	"github.com/golang/mock/gomock"
-	"github.com/int128/kubelogin/pkg/adaptors/logger/mock_logger"
+	"github.com/int128/kubelogin/pkg/testing/logger"
 )
 
 type mockTransport struct {
@@ -37,7 +37,7 @@ dummy`)), req)
 
 	transport := &Transport{
 		Base:   &mockTransport{resp: resp},
-		Logger: mock_logger.New(t),
+		Logger: logger.New(t),
 	}
 	gotResp, err := transport.RoundTrip(req)
 	if err != nil {

pkg/adaptors/oidcclient/mock_oidcclient/mock_oidcclient.go

@@ -1,5 +1,5 @@
 // Code generated by MockGen. DO NOT EDIT.
-// Source: github.com/int128/kubelogin/pkg/adaptors/oidcclient (interfaces: FactoryInterface,Interface)
+// Source: github.com/int128/kubelogin/pkg/adaptors/oidcclient (interfaces: Interface)
 
 // Package mock_oidcclient is a generated GoMock package.
 package mock_oidcclient
@@ -8,86 +8,49 @@ import (
 	context "context"
 	gomock "github.com/golang/mock/gomock"
 	oidcclient "github.com/int128/kubelogin/pkg/adaptors/oidcclient"
+	oidc "github.com/int128/kubelogin/pkg/oidc"
 	reflect "reflect"
 )
 
-// MockFactoryInterface is a mock of FactoryInterface interface
-type MockFactoryInterface struct {
-	ctrl     *gomock.Controller
-	recorder *MockFactoryInterfaceMockRecorder
-}
-
-// MockFactoryInterfaceMockRecorder is the mock recorder for MockFactoryInterface
-type MockFactoryInterfaceMockRecorder struct {
-	mock *MockFactoryInterface
-}
-
-// NewMockFactoryInterface creates a new mock instance
-func NewMockFactoryInterface(ctrl *gomock.Controller) *MockFactoryInterface {
-	mock := &MockFactoryInterface{ctrl: ctrl}
-	mock.recorder = &MockFactoryInterfaceMockRecorder{mock}
-	return mock
-}
-
-// EXPECT returns an object that allows the caller to indicate expected use
-func (m *MockFactoryInterface) EXPECT() *MockFactoryInterfaceMockRecorder {
-	return m.recorder
-}
-
-// New mocks base method
-func (m *MockFactoryInterface) New(arg0 context.Context, arg1 oidcclient.Config) (oidcclient.Interface, error) {
-	m.ctrl.T.Helper()
-	ret := m.ctrl.Call(m, "New", arg0, arg1)
-	ret0, _ := ret[0].(oidcclient.Interface)
-	ret1, _ := ret[1].(error)
-	return ret0, ret1
-}
-
-// New indicates an expected call of New
-func (mr *MockFactoryInterfaceMockRecorder) New(arg0, arg1 interface{}) *gomock.Call {
-	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "New", reflect.TypeOf((*MockFactoryInterface)(nil).New), arg0, arg1)
-}
-
-// MockInterface is a mock of Interface interface
+// MockInterface is a mock of Interface interface.
 type MockInterface struct {
 	ctrl     *gomock.Controller
 	recorder *MockInterfaceMockRecorder
 }
 
-// MockInterfaceMockRecorder is the mock recorder for MockInterface
+// MockInterfaceMockRecorder is the mock recorder for MockInterface.
 type MockInterfaceMockRecorder struct {
 	mock *MockInterface
 }
 
-// NewMockInterface creates a new mock instance
+// NewMockInterface creates a new mock instance.
 func NewMockInterface(ctrl *gomock.Controller) *MockInterface {
 	mock := &MockInterface{ctrl: ctrl}
 	mock.recorder = &MockInterfaceMockRecorder{mock}
 	return mock
 }
 
-// EXPECT returns an object that allows the caller to indicate expected use
+// EXPECT returns an object that allows the caller to indicate expected use.
 func (m *MockInterface) EXPECT() *MockInterfaceMockRecorder {
 	return m.recorder
 }
 
-// ExchangeAuthCode mocks base method
-func (m *MockInterface) ExchangeAuthCode(arg0 context.Context, arg1 oidcclient.ExchangeAuthCodeInput) (*oidcclient.TokenSet, error) {
+// ExchangeAuthCode mocks base method.
+func (m *MockInterface) ExchangeAuthCode(arg0 context.Context, arg1 oidcclient.ExchangeAuthCodeInput) (*oidc.TokenSet, error) {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "ExchangeAuthCode", arg0, arg1)
-	ret0, _ := ret[0].(*oidcclient.TokenSet)
+	ret0, _ := ret[0].(*oidc.TokenSet)
 	ret1, _ := ret[1].(error)
 	return ret0, ret1
 }
 
-// ExchangeAuthCode indicates an expected call of ExchangeAuthCode
+// ExchangeAuthCode indicates an expected call of ExchangeAuthCode.
 func (mr *MockInterfaceMockRecorder) ExchangeAuthCode(arg0, arg1 interface{}) *gomock.Call {
 	mr.mock.ctrl.T.Helper()
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "ExchangeAuthCode", reflect.TypeOf((*MockInterface)(nil).ExchangeAuthCode), arg0, arg1)
 }
 
-// GetAuthCodeURL mocks base method
+// GetAuthCodeURL mocks base method.
 func (m *MockInterface) GetAuthCodeURL(arg0 oidcclient.AuthCodeURLInput) string {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "GetAuthCodeURL", arg0)
@@ -95,53 +58,67 @@ func (m *MockInterface) GetAuthCodeURL(arg0 oidcclient.AuthCodeURLInput) string
 	return ret0
 }
 
-// GetAuthCodeURL indicates an expected call of GetAuthCodeURL
+// GetAuthCodeURL indicates an expected call of GetAuthCodeURL.
 func (mr *MockInterfaceMockRecorder) GetAuthCodeURL(arg0 interface{}) *gomock.Call {
 	mr.mock.ctrl.T.Helper()
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "GetAuthCodeURL", reflect.TypeOf((*MockInterface)(nil).GetAuthCodeURL), arg0)
 }
 
-// GetTokenByAuthCode mocks base method
-func (m *MockInterface) GetTokenByAuthCode(arg0 context.Context, arg1 oidcclient.GetTokenByAuthCodeInput, arg2 chan<- string) (*oidcclient.TokenSet, error) {
+// GetTokenByAuthCode mocks base method.
+func (m *MockInterface) GetTokenByAuthCode(arg0 context.Context, arg1 oidcclient.GetTokenByAuthCodeInput, arg2 chan<- string) (*oidc.TokenSet, error) {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "GetTokenByAuthCode", arg0, arg1, arg2)
-	ret0, _ := ret[0].(*oidcclient.TokenSet)
+	ret0, _ := ret[0].(*oidc.TokenSet)
 	ret1, _ := ret[1].(error)
 	return ret0, ret1
 }
 
-// GetTokenByAuthCode indicates an expected call of GetTokenByAuthCode
+// GetTokenByAuthCode indicates an expected call of GetTokenByAuthCode.
 func (mr *MockInterfaceMockRecorder) GetTokenByAuthCode(arg0, arg1, arg2 interface{}) *gomock.Call {
 	mr.mock.ctrl.T.Helper()
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "GetTokenByAuthCode", reflect.TypeOf((*MockInterface)(nil).GetTokenByAuthCode), arg0, arg1, arg2)
 }
 
-// GetTokenByROPC mocks base method
-func (m *MockInterface) GetTokenByROPC(arg0 context.Context, arg1, arg2 string) (*oidcclient.TokenSet, error) {
+// GetTokenByROPC mocks base method.
+func (m *MockInterface) GetTokenByROPC(arg0 context.Context, arg1, arg2 string) (*oidc.TokenSet, error) {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "GetTokenByROPC", arg0, arg1, arg2)
-	ret0, _ := ret[0].(*oidcclient.TokenSet)
+	ret0, _ := ret[0].(*oidc.TokenSet)
 	ret1, _ := ret[1].(error)
 	return ret0, ret1
 }
 
-// GetTokenByROPC indicates an expected call of GetTokenByROPC
+// GetTokenByROPC indicates an expected call of GetTokenByROPC.
 func (mr *MockInterfaceMockRecorder) GetTokenByROPC(arg0, arg1, arg2 interface{}) *gomock.Call {
 	mr.mock.ctrl.T.Helper()
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "GetTokenByROPC", reflect.TypeOf((*MockInterface)(nil).GetTokenByROPC), arg0, arg1, arg2)
 }
 
-// Refresh mocks base method
-func (m *MockInterface) Refresh(arg0 context.Context, arg1 string) (*oidcclient.TokenSet, error) {
+// Refresh mocks base method.
+func (m *MockInterface) Refresh(arg0 context.Context, arg1 string) (*oidc.TokenSet, error) {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "Refresh", arg0, arg1)
-	ret0, _ := ret[0].(*oidcclient.TokenSet)
+	ret0, _ := ret[0].(*oidc.TokenSet)
 	ret1, _ := ret[1].(error)
 	return ret0, ret1
 }
 
-// Refresh indicates an expected call of Refresh
+// Refresh indicates an expected call of Refresh.
 func (mr *MockInterfaceMockRecorder) Refresh(arg0, arg1 interface{}) *gomock.Call {
 	mr.mock.ctrl.T.Helper()
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Refresh", reflect.TypeOf((*MockInterface)(nil).Refresh), arg0, arg1)
 }
+
+// SupportedPKCEMethods mocks base method.
+func (m *MockInterface) SupportedPKCEMethods() []string {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "SupportedPKCEMethods")
+	ret0, _ := ret[0].([]string)
+	return ret0
+}
+
+// SupportedPKCEMethods indicates an expected call of SupportedPKCEMethods.
+func (mr *MockInterfaceMockRecorder) SupportedPKCEMethods() *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "SupportedPKCEMethods", reflect.TypeOf((*MockInterface)(nil).SupportedPKCEMethods))
+}

pkg/adaptors/oidcclient/oidcclient.go

@@ -2,72 +2,63 @@ package oidcclient
 
 import (
 	"context"
-	"fmt"
 	"net/http"
 	"time"
 
-	"github.com/coreos/go-oidc"
-	"github.com/google/wire"
+	gooidc "github.com/coreos/go-oidc"
+	"github.com/int128/kubelogin/pkg/adaptors/clock"
 	"github.com/int128/kubelogin/pkg/adaptors/logger"
+	"github.com/int128/kubelogin/pkg/jwt"
+	"github.com/int128/kubelogin/pkg/oidc"
+	"github.com/int128/kubelogin/pkg/pkce"
 	"github.com/int128/oauth2cli"
 	"golang.org/x/oauth2"
 	"golang.org/x/xerrors"
 )
 
-//go:generate mockgen -destination mock_oidcclient/mock_oidcclient.go github.com/int128/kubelogin/pkg/adaptors/oidcclient FactoryInterface,Interface
-
-// Set provides an implementation and interface for OIDC.
-var Set = wire.NewSet(
-	wire.Struct(new(Factory), "*"),
-	wire.Bind(new(FactoryInterface), new(*Factory)),
-)
+//go:generate mockgen -destination mock_oidcclient/mock_oidcclient.go github.com/int128/kubelogin/pkg/adaptors/oidcclient Interface
 
 type Interface interface {
 	GetAuthCodeURL(in AuthCodeURLInput) string
-	ExchangeAuthCode(ctx context.Context, in ExchangeAuthCodeInput) (*TokenSet, error)
-	GetTokenByAuthCode(ctx context.Context, in GetTokenByAuthCodeInput, localServerReadyChan chan<- string) (*TokenSet, error)
-	GetTokenByROPC(ctx context.Context, username, password string) (*TokenSet, error)
-	Refresh(ctx context.Context, refreshToken string) (*TokenSet, error)
+	ExchangeAuthCode(ctx context.Context, in ExchangeAuthCodeInput) (*oidc.TokenSet, error)
+	GetTokenByAuthCode(ctx context.Context, in GetTokenByAuthCodeInput, localServerReadyChan chan<- string) (*oidc.TokenSet, error)
+	GetTokenByROPC(ctx context.Context, username, password string) (*oidc.TokenSet, error)
+	Refresh(ctx context.Context, refreshToken string) (*oidc.TokenSet, error)
+	SupportedPKCEMethods() []string
 }
 
 type AuthCodeURLInput struct {
-	State               string
-	Nonce               string
-	CodeChallenge       string
-	CodeChallengeMethod string
-	RedirectURI         string
+	State                  string
+	Nonce                  string
+	PKCEParams             pkce.Params
+	RedirectURI            string
+	AuthRequestExtraParams map[string]string
 }
 
 type ExchangeAuthCodeInput struct {
-	Code         string
-	CodeVerifier string
-	Nonce        string
-	RedirectURI  string
+	Code        string
+	PKCEParams  pkce.Params
+	Nonce       string
+	RedirectURI string
 }
 
 type GetTokenByAuthCodeInput struct {
-	BindAddress         []string
-	Nonce               string
-	CodeChallenge       string
-	CodeChallengeMethod string
-	CodeVerifier        string
-}
-
-// TokenSet represents an output DTO of
-// Interface.GetTokenByAuthCode, Interface.GetTokenByROPC and Interface.Refresh.
-type TokenSet struct {
-	IDToken        string
-	RefreshToken   string
-	IDTokenSubject string
-	IDTokenExpiry  time.Time
-	IDTokenClaims  map[string]string // string representation of claims for logging
+	BindAddress            []string
+	State                  string
+	Nonce                  string
+	PKCEParams             pkce.Params
+	RedirectURLHostname    string
+	AuthRequestExtraParams map[string]string
+	LocalServerSuccessHTML string
 }
 
 type client struct {
-	httpClient   *http.Client
-	provider     *oidc.Provider
-	oauth2Config oauth2.Config
-	logger       logger.Interface
+	httpClient           *http.Client
+	provider             *gooidc.Provider
+	oauth2Config         oauth2.Config
+	clock                clock.Interface
+	logger               logger.Interface
+	supportedPKCEMethods []string
 }
 
 func (c *client) wrapContext(ctx context.Context) context.Context {
@@ -78,25 +69,22 @@ func (c *client) wrapContext(ctx context.Context) context.Context {
 }
 
 // GetTokenByAuthCode performs the authorization code flow.
-func (c *client) GetTokenByAuthCode(ctx context.Context, in GetTokenByAuthCodeInput, localServerReadyChan chan<- string) (*TokenSet, error) {
+func (c *client) GetTokenByAuthCode(ctx context.Context, in GetTokenByAuthCodeInput, localServerReadyChan chan<- string) (*oidc.TokenSet, error) {
 	ctx = c.wrapContext(ctx)
 	config := oauth2cli.Config{
-		OAuth2Config: c.oauth2Config,
-		AuthCodeOptions: []oauth2.AuthCodeOption{
-			oauth2.AccessTypeOffline,
-			oidc.Nonce(in.Nonce),
-			oauth2.SetAuthURLParam("code_challenge", in.CodeChallenge),
-			oauth2.SetAuthURLParam("code_challenge_method", in.CodeChallengeMethod),
-		},
-		TokenRequestOptions: []oauth2.AuthCodeOption{
-			oauth2.SetAuthURLParam("code_verifier", in.CodeVerifier),
-		},
+		OAuth2Config:           c.oauth2Config,
+		State:                  in.State,
+		AuthCodeOptions:        authorizationRequestOptions(in.Nonce, in.PKCEParams, in.AuthRequestExtraParams),
+		TokenRequestOptions:    tokenRequestOptions(in.PKCEParams),
 		LocalServerBindAddress: in.BindAddress,
 		LocalServerReadyChan:   localServerReadyChan,
+		RedirectURLHostname:    in.RedirectURLHostname,
+		LocalServerSuccessHTML: in.LocalServerSuccessHTML,
+		Logf:                   c.logger.V(1).Infof,
 	}
 	token, err := oauth2cli.GetToken(ctx, config)
 	if err != nil {
-		return nil, xerrors.Errorf("could not get a token: %w", err)
+		return nil, xerrors.Errorf("oauth2 error: %w", err)
 	}
 	return c.verifyToken(ctx, token, in.Nonce)
 }
@@ -105,38 +93,65 @@ func (c *client) GetTokenByAuthCode(ctx context.Context, in GetTokenByAuthCodeIn
 func (c *client) GetAuthCodeURL(in AuthCodeURLInput) string {
 	cfg := c.oauth2Config
 	cfg.RedirectURL = in.RedirectURI
-	return cfg.AuthCodeURL(in.State,
-		oauth2.AccessTypeOffline,
-		oidc.Nonce(in.Nonce),
-		oauth2.SetAuthURLParam("code_challenge", in.CodeChallenge),
-		oauth2.SetAuthURLParam("code_challenge_method", in.CodeChallengeMethod),
-	)
+	opts := authorizationRequestOptions(in.Nonce, in.PKCEParams, in.AuthRequestExtraParams)
+	return cfg.AuthCodeURL(in.State, opts...)
 }
 
 // ExchangeAuthCode exchanges the authorization code and token.
-func (c *client) ExchangeAuthCode(ctx context.Context, in ExchangeAuthCodeInput) (*TokenSet, error) {
+func (c *client) ExchangeAuthCode(ctx context.Context, in ExchangeAuthCodeInput) (*oidc.TokenSet, error) {
 	ctx = c.wrapContext(ctx)
 	cfg := c.oauth2Config
 	cfg.RedirectURL = in.RedirectURI
-	token, err := cfg.Exchange(ctx, in.Code, oauth2.SetAuthURLParam("code_verifier", in.CodeVerifier))
+	opts := tokenRequestOptions(in.PKCEParams)
+	token, err := cfg.Exchange(ctx, in.Code, opts...)
 	if err != nil {
-		return nil, xerrors.Errorf("could not exchange the authorization code: %w", err)
+		return nil, xerrors.Errorf("exchange error: %w", err)
 	}
 	return c.verifyToken(ctx, token, in.Nonce)
 }
 
+func authorizationRequestOptions(n string, p pkce.Params, e map[string]string) []oauth2.AuthCodeOption {
+	o := []oauth2.AuthCodeOption{
+		oauth2.AccessTypeOffline,
+		gooidc.Nonce(n),
+	}
+	if !p.IsZero() {
+		o = append(o,
+			oauth2.SetAuthURLParam("code_challenge", p.CodeChallenge),
+			oauth2.SetAuthURLParam("code_challenge_method", p.CodeChallengeMethod),
+		)
+	}
+	for key, value := range e {
+		o = append(o, oauth2.SetAuthURLParam(key, value))
+	}
+	return o
+}
+
+func tokenRequestOptions(p pkce.Params) (o []oauth2.AuthCodeOption) {
+	if !p.IsZero() {
+		o = append(o, oauth2.SetAuthURLParam("code_verifier", p.CodeVerifier))
+	}
+	return
+}
+
+// SupportedPKCEMethods returns the PKCE methods supported by the provider.
+// This may return nil if PKCE is not supported.
+func (c *client) SupportedPKCEMethods() []string {
+	return c.supportedPKCEMethods
+}
+
 // GetTokenByROPC performs the resource owner password credentials flow.
-func (c *client) GetTokenByROPC(ctx context.Context, username, password string) (*TokenSet, error) {
+func (c *client) GetTokenByROPC(ctx context.Context, username, password string) (*oidc.TokenSet, error) {
 	ctx = c.wrapContext(ctx)
 	token, err := c.oauth2Config.PasswordCredentialsToken(ctx, username, password)
 	if err != nil {
-		return nil, xerrors.Errorf("could not get a token: %w", err)
+		return nil, xerrors.Errorf("resource owner password credentials flow error: %w", err)
 	}
 	return c.verifyToken(ctx, token, "")
 }
 
 // Refresh sends a refresh token request and returns a token set.
-func (c *client) Refresh(ctx context.Context, refreshToken string) (*TokenSet, error) {
+func (c *client) Refresh(ctx context.Context, refreshToken string) (*oidc.TokenSet, error) {
 	ctx = c.wrapContext(ctx)
 	currentToken := &oauth2.Token{
 		Expiry:       time.Now(),
@@ -152,46 +167,30 @@ func (c *client) Refresh(ctx context.Context, refreshToken string) (*TokenSet, e
 
 // verifyToken verifies the token with the certificates of the provider and the nonce.
 // If the nonce is an empty string, it does not verify the nonce.
-func (c *client) verifyToken(ctx context.Context, token *oauth2.Token, nonce string) (*TokenSet, error) {
-	idTokenString, ok := token.Extra("id_token").(string)
+func (c *client) verifyToken(ctx context.Context, token *oauth2.Token, nonce string) (*oidc.TokenSet, error) {
+	idToken, ok := token.Extra("id_token").(string)
 	if !ok {
 		return nil, xerrors.Errorf("id_token is missing in the token response: %s", token)
 	}
-	verifier := c.provider.Verifier(&oidc.Config{ClientID: c.oauth2Config.ClientID})
-	idToken, err := verifier.Verify(ctx, idTokenString)
+	verifier := c.provider.Verifier(&gooidc.Config{ClientID: c.oauth2Config.ClientID, Now: c.clock.Now})
+	verifiedIDToken, err := verifier.Verify(ctx, idToken)
 	if err != nil {
 		return nil, xerrors.Errorf("could not verify the ID token: %w", err)
 	}
-	if nonce != "" && nonce != idToken.Nonce {
-		return nil, xerrors.Errorf("nonce did not match (wants %s but was %s)", nonce, idToken.Nonce)
+	if nonce != "" && nonce != verifiedIDToken.Nonce {
+		return nil, xerrors.Errorf("nonce did not match (wants %s but got %s)", nonce, verifiedIDToken.Nonce)
 	}
-	claims, err := dumpClaims(idToken)
+	pretty, err := jwt.DecodePayloadAsPrettyJSON(idToken)
 	if err != nil {
-		c.logger.V(1).Infof("incomplete claims of the ID token: %w", err)
+		return nil, xerrors.Errorf("could not decode the token: %w", err)
 	}
-	return &TokenSet{
-		IDToken:       idTokenString,
-		RefreshToken:  token.RefreshToken,
-		IDTokenExpiry: idToken.Expiry,
-		IDTokenClaims: claims,
+	return &oidc.TokenSet{
+		IDToken: idToken,
+		IDTokenClaims: jwt.Claims{
+			Subject: verifiedIDToken.Subject,
+			Expiry:  verifiedIDToken.Expiry,
+			Pretty:  pretty,
+		},
+		RefreshToken: token.RefreshToken,
 	}, nil
 }
-
-func dumpClaims(token *oidc.IDToken) (map[string]string, error) {
-	var rawClaims map[string]interface{}
-	err := token.Claims(&rawClaims)
-	return dumpRawClaims(rawClaims), err
-}
-
-func dumpRawClaims(rawClaims map[string]interface{}) map[string]string {
-	claims := make(map[string]string)
-	for k, v := range rawClaims {
-		switch v := v.(type) {
-		case float64:
-			claims[k] = fmt.Sprintf("%.f", v)
-		default:
-			claims[k] = fmt.Sprintf("%v", v)
-		}
-	}
-	return claims
-}

pkg/adaptors/reader/mock_reader/mock_reader.go

@@ -1,52 +1,38 @@
 // Code generated by MockGen. DO NOT EDIT.
-// Source: github.com/int128/kubelogin/pkg/adaptors/env (interfaces: Interface)
+// Source: github.com/int128/kubelogin/pkg/adaptors/reader (interfaces: Interface)
 
-// Package mock_env is a generated GoMock package.
-package mock_env
+// Package mock_reader is a generated GoMock package.
+package mock_reader
 
 import (
 	gomock "github.com/golang/mock/gomock"
 	reflect "reflect"
 )
 
-// MockInterface is a mock of Interface interface
+// MockInterface is a mock of Interface interface.
 type MockInterface struct {
 	ctrl     *gomock.Controller
 	recorder *MockInterfaceMockRecorder
 }
 
-// MockInterfaceMockRecorder is the mock recorder for MockInterface
+// MockInterfaceMockRecorder is the mock recorder for MockInterface.
 type MockInterfaceMockRecorder struct {
 	mock *MockInterface
 }
 
-// NewMockInterface creates a new mock instance
+// NewMockInterface creates a new mock instance.
 func NewMockInterface(ctrl *gomock.Controller) *MockInterface {
 	mock := &MockInterface{ctrl: ctrl}
 	mock.recorder = &MockInterfaceMockRecorder{mock}
 	return mock
 }
 
-// EXPECT returns an object that allows the caller to indicate expected use
+// EXPECT returns an object that allows the caller to indicate expected use.
 func (m *MockInterface) EXPECT() *MockInterfaceMockRecorder {
 	return m.recorder
 }
 
-// OpenBrowser mocks base method
-func (m *MockInterface) OpenBrowser(arg0 string) error {
-	m.ctrl.T.Helper()
-	ret := m.ctrl.Call(m, "OpenBrowser", arg0)
-	ret0, _ := ret[0].(error)
-	return ret0
-}
-
-// OpenBrowser indicates an expected call of OpenBrowser
-func (mr *MockInterfaceMockRecorder) OpenBrowser(arg0 interface{}) *gomock.Call {
-	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "OpenBrowser", reflect.TypeOf((*MockInterface)(nil).OpenBrowser), arg0)
-}
-
-// ReadPassword mocks base method
+// ReadPassword mocks base method.
 func (m *MockInterface) ReadPassword(arg0 string) (string, error) {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "ReadPassword", arg0)
@@ -55,13 +41,13 @@ func (m *MockInterface) ReadPassword(arg0 string) (string, error) {
 	return ret0, ret1
 }
 
-// ReadPassword indicates an expected call of ReadPassword
+// ReadPassword indicates an expected call of ReadPassword.
 func (mr *MockInterfaceMockRecorder) ReadPassword(arg0 interface{}) *gomock.Call {
 	mr.mock.ctrl.T.Helper()
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "ReadPassword", reflect.TypeOf((*MockInterface)(nil).ReadPassword), arg0)
 }
 
-// ReadString mocks base method
+// ReadString mocks base method.
 func (m *MockInterface) ReadString(arg0 string) (string, error) {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "ReadString", arg0)
@@ -70,7 +56,7 @@ func (m *MockInterface) ReadString(arg0 string) (string, error) {
 	return ret0, ret1
 }
 
-// ReadString indicates an expected call of ReadString
+// ReadString indicates an expected call of ReadString.
 func (mr *MockInterfaceMockRecorder) ReadString(arg0 interface{}) *gomock.Call {
 	mr.mock.ctrl.T.Helper()
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "ReadString", reflect.TypeOf((*MockInterface)(nil).ReadString), arg0)

pkg/adaptors/reader/reader.go

@@ -0,0 +1,61 @@
+// Package reader provides the reader of standard input.
+package reader
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"strings"
+	"syscall"
+
+	"github.com/google/wire"
+	"github.com/int128/kubelogin/pkg/adaptors/stdio"
+	"golang.org/x/crypto/ssh/terminal"
+	"golang.org/x/xerrors"
+)
+
+//go:generate mockgen -destination mock_reader/mock_reader.go github.com/int128/kubelogin/pkg/adaptors/reader Interface
+
+// Set provides an implementation and interface for Reader.
+var Set = wire.NewSet(
+	wire.Struct(new(Reader), "*"),
+	wire.Bind(new(Interface), new(*Reader)),
+)
+
+type Interface interface {
+	ReadString(prompt string) (string, error)
+	ReadPassword(prompt string) (string, error)
+}
+
+type Reader struct {
+	Stdin stdio.Stdin
+}
+
+// ReadString reads a string from the stdin.
+func (x *Reader) ReadString(prompt string) (string, error) {
+	if _, err := fmt.Fprint(os.Stderr, prompt); err != nil {
+		return "", xerrors.Errorf("write error: %w", err)
+	}
+	r := bufio.NewReader(x.Stdin)
+	s, err := r.ReadString('\n')
+	if err != nil {
+		return "", xerrors.Errorf("read error: %w", err)
+	}
+	s = strings.TrimRight(s, "\r\n")
+	return s, nil
+}
+
+// ReadPassword reads a password from the stdin without echo back.
+func (*Reader) ReadPassword(prompt string) (string, error) {
+	if _, err := fmt.Fprint(os.Stderr, prompt); err != nil {
+		return "", xerrors.Errorf("write error: %w", err)
+	}
+	b, err := terminal.ReadPassword(int(syscall.Stdin))
+	if err != nil {
+		return "", xerrors.Errorf("read error: %w", err)
+	}
+	if _, err := fmt.Fprintln(os.Stderr); err != nil {
+		return "", xerrors.Errorf("write error: %w", err)
+	}
+	return string(b), nil
+}

pkg/adaptors/stdio/stdio.go

@@ -0,0 +1,17 @@
+// Package stdio wraps os.Stdin and os.Stdout for testing.
+package stdio
+
+import (
+	"io"
+	"os"
+
+	"github.com/google/wire"
+)
+
+var Set = wire.NewSet(
+	wire.InterfaceValue(new(Stdin), os.Stdin),
+	wire.InterfaceValue(new(Stdout), os.Stdout),
+)
+
+type Stdout io.Writer
+type Stdin io.Reader

pkg/adaptors/tokencache/mock_tokencache/mock_tokencache.go

@@ -10,53 +10,53 @@ import (
 	reflect "reflect"
 )
 
-// MockInterface is a mock of Interface interface
+// MockInterface is a mock of Interface interface.
 type MockInterface struct {
 	ctrl     *gomock.Controller
 	recorder *MockInterfaceMockRecorder
 }
 
-// MockInterfaceMockRecorder is the mock recorder for MockInterface
+// MockInterfaceMockRecorder is the mock recorder for MockInterface.
 type MockInterfaceMockRecorder struct {
 	mock *MockInterface
 }
 
-// NewMockInterface creates a new mock instance
+// NewMockInterface creates a new mock instance.
 func NewMockInterface(ctrl *gomock.Controller) *MockInterface {
 	mock := &MockInterface{ctrl: ctrl}
 	mock.recorder = &MockInterfaceMockRecorder{mock}
 	return mock
 }
 
-// EXPECT returns an object that allows the caller to indicate expected use
+// EXPECT returns an object that allows the caller to indicate expected use.
 func (m *MockInterface) EXPECT() *MockInterfaceMockRecorder {
 	return m.recorder
 }
 
-// FindByKey mocks base method
-func (m *MockInterface) FindByKey(arg0 string, arg1 tokencache.Key) (*tokencache.TokenCache, error) {
+// FindByKey mocks base method.
+func (m *MockInterface) FindByKey(arg0 string, arg1 tokencache.Key) (*tokencache.Value, error) {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "FindByKey", arg0, arg1)
-	ret0, _ := ret[0].(*tokencache.TokenCache)
+	ret0, _ := ret[0].(*tokencache.Value)
 	ret1, _ := ret[1].(error)
 	return ret0, ret1
 }
 
-// FindByKey indicates an expected call of FindByKey
+// FindByKey indicates an expected call of FindByKey.
 func (mr *MockInterfaceMockRecorder) FindByKey(arg0, arg1 interface{}) *gomock.Call {
 	mr.mock.ctrl.T.Helper()
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "FindByKey", reflect.TypeOf((*MockInterface)(nil).FindByKey), arg0, arg1)
 }
 
-// Save mocks base method
-func (m *MockInterface) Save(arg0 string, arg1 tokencache.Key, arg2 tokencache.TokenCache) error {
+// Save mocks base method.
+func (m *MockInterface) Save(arg0 string, arg1 tokencache.Key, arg2 tokencache.Value) error {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "Save", arg0, arg1, arg2)
 	ret0, _ := ret[0].(error)
 	return ret0
 }
 
-// Save indicates an expected call of Save
+// Save indicates an expected call of Save.
 func (mr *MockInterfaceMockRecorder) Save(arg0, arg1, arg2 interface{}) *gomock.Call {
 	mr.mock.ctrl.T.Helper()
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Save", reflect.TypeOf((*MockInterface)(nil).Save), arg0, arg1, arg2)

pkg/adaptors/tokencache/tokencache.go

@@ -2,6 +2,7 @@ package tokencache
 
 import (
 	"crypto/sha256"
+	"encoding/gob"
 	"encoding/hex"
 	"encoding/json"
 	"os"
@@ -20,18 +21,23 @@ var Set = wire.NewSet(
 )
 
 type Interface interface {
-	FindByKey(dir string, key Key) (*TokenCache, error)
-	Save(dir string, key Key, cache TokenCache) error
+	FindByKey(dir string, key Key) (*Value, error)
+	Save(dir string, key Key, value Value) error
 }
 
 // Key represents a key of a token cache.
 type Key struct {
-	IssuerURL string
-	ClientID  string
+	IssuerURL      string
+	ClientID       string
+	ClientSecret   string
+	ExtraScopes    []string
+	CACertFilename string
+	CACertData     string
+	SkipTLSVerify  bool
 }
 
-// TokenCache represents a token cache.
-type TokenCache struct {
+// Value represents a value of a token cache.
+type Value struct {
 	IDToken      string `json:"id_token,omitempty"`
 	RefreshToken string `json:"refresh_token,omitempty"`
 }
@@ -40,42 +46,52 @@ type TokenCache struct {
 // Filename of a token cache is sha256 digest of the issuer, zero-character and client ID.
 type Repository struct{}
 
-func (r *Repository) FindByKey(dir string, key Key) (*TokenCache, error) {
-	filename := filepath.Join(dir, computeFilename(key))
-	f, err := os.Open(filename)
+func (r *Repository) FindByKey(dir string, key Key) (*Value, error) {
+	filename, err := computeFilename(key)
 	if err != nil {
-		return nil, xerrors.Errorf("could not open file %s: %w", filename, err)
+		return nil, xerrors.Errorf("could not compute the key: %w", err)
+	}
+	p := filepath.Join(dir, filename)
+	f, err := os.Open(p)
+	if err != nil {
+		return nil, xerrors.Errorf("could not open file %s: %w", p, err)
 	}
 	defer f.Close()
 	d := json.NewDecoder(f)
-	var c TokenCache
+	var c Value
 	if err := d.Decode(&c); err != nil {
-		return nil, xerrors.Errorf("could not decode json file %s: %w", filename, err)
+		return nil, xerrors.Errorf("invalid json file %s: %w", p, err)
 	}
 	return &c, nil
 }
 
-func (r *Repository) Save(dir string, key Key, cache TokenCache) error {
+func (r *Repository) Save(dir string, key Key, value Value) error {
 	if err := os.MkdirAll(dir, 0700); err != nil {
 		return xerrors.Errorf("could not create directory %s: %w", dir, err)
 	}
-	filename := filepath.Join(dir, computeFilename(key))
-	f, err := os.OpenFile(filename, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0600)
+	filename, err := computeFilename(key)
 	if err != nil {
-		return xerrors.Errorf("could not create file %s: %w", filename, err)
+		return xerrors.Errorf("could not compute the key: %w", err)
+	}
+	p := filepath.Join(dir, filename)
+	f, err := os.OpenFile(p, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0600)
+	if err != nil {
+		return xerrors.Errorf("could not create file %s: %w", p, err)
 	}
 	defer f.Close()
 	e := json.NewEncoder(f)
-	if err := e.Encode(&cache); err != nil {
-		return xerrors.Errorf("could not encode json to file %s: %w", filename, err)
+	if err := e.Encode(&value); err != nil {
+		return xerrors.Errorf("json encode error: %w", err)
 	}
 	return nil
 }
 
-func computeFilename(key Key) string {
+func computeFilename(key Key) (string, error) {
 	s := sha256.New()
-	_, _ = s.Write([]byte(key.IssuerURL))
-	_, _ = s.Write([]byte{0x00})
-	_, _ = s.Write([]byte(key.ClientID))
-	return hex.EncodeToString(s.Sum(nil))
+	e := gob.NewEncoder(s)
+	if err := e.Encode(&key); err != nil {
+		return "", xerrors.Errorf("could not encode the key: %w", err)
+	}
+	h := hex.EncodeToString(s.Sum(nil))
+	return h, nil
 }

pkg/adaptors/tokencache/tokencache_test.go

@@ -6,7 +6,7 @@ import (
 	"path/filepath"
 	"testing"
 
-	"github.com/go-test/deep"
+	"github.com/google/go-cmp/cmp"
 )
 
 func TestRepository_FindByKey(t *testing.T) {
@@ -23,22 +23,30 @@ func TestRepository_FindByKey(t *testing.T) {
 			}
 		}()
 		key := Key{
-			IssuerURL: "YOUR_ISSUER",
-			ClientID:  "YOUR_CLIENT_ID",
+			IssuerURL:      "YOUR_ISSUER",
+			ClientID:       "YOUR_CLIENT_ID",
+			ClientSecret:   "YOUR_CLIENT_SECRET",
+			ExtraScopes:    []string{"openid", "email"},
+			CACertFilename: "/path/to/cert",
+			SkipTLSVerify:  false,
 		}
 		json := `{"id_token":"YOUR_ID_TOKEN","refresh_token":"YOUR_REFRESH_TOKEN"}`
-		filename := filepath.Join(dir, computeFilename(key))
-		if err := ioutil.WriteFile(filename, []byte(json), 0600); err != nil {
+		filename, err := computeFilename(key)
+		if err != nil {
+			t.Errorf("could not compute the key: %s", err)
+		}
+		p := filepath.Join(dir, filename)
+		if err := ioutil.WriteFile(p, []byte(json), 0600); err != nil {
 			t.Fatalf("could not write to the temp file: %s", err)
 		}
 
-		tokenCache, err := r.FindByKey(dir, key)
+		value, err := r.FindByKey(dir, key)
 		if err != nil {
 			t.Errorf("err wants nil but %+v", err)
 		}
-		want := &TokenCache{IDToken: "YOUR_ID_TOKEN", RefreshToken: "YOUR_REFRESH_TOKEN"}
-		if diff := deep.Equal(tokenCache, want); diff != nil {
-			t.Error(diff)
+		want := &Value{IDToken: "YOUR_ID_TOKEN", RefreshToken: "YOUR_REFRESH_TOKEN"}
+		if diff := cmp.Diff(want, value); diff != "" {
+			t.Errorf("mismatch (-want +got):\n%s", diff)
 		}
 	})
 }
@@ -58,23 +66,32 @@ func TestRepository_Save(t *testing.T) {
 		}()
 
 		key := Key{
-			IssuerURL: "YOUR_ISSUER",
-			ClientID:  "YOUR_CLIENT_ID",
+			IssuerURL:      "YOUR_ISSUER",
+			ClientID:       "YOUR_CLIENT_ID",
+			ClientSecret:   "YOUR_CLIENT_SECRET",
+			ExtraScopes:    []string{"openid", "email"},
+			CACertFilename: "/path/to/cert",
+			SkipTLSVerify:  false,
 		}
-		tokenCache := TokenCache{IDToken: "YOUR_ID_TOKEN", RefreshToken: "YOUR_REFRESH_TOKEN"}
-		if err := r.Save(dir, key, tokenCache); err != nil {
+		value := Value{IDToken: "YOUR_ID_TOKEN", RefreshToken: "YOUR_REFRESH_TOKEN"}
+		if err := r.Save(dir, key, value); err != nil {
 			t.Errorf("err wants nil but %+v", err)
 		}
 
-		filename := filepath.Join(dir, computeFilename(key))
-		b, err := ioutil.ReadFile(filename)
+		filename, err := computeFilename(key)
+		if err != nil {
+			t.Errorf("could not compute the key: %s", err)
+		}
+		p := filepath.Join(dir, filename)
+		b, err := ioutil.ReadFile(p)
 		if err != nil {
 			t.Fatalf("could not read the token cache file: %s", err)
 		}
 		want := `{"id_token":"YOUR_ID_TOKEN","refresh_token":"YOUR_REFRESH_TOKEN"}
 `
-		if diff := deep.Equal(string(b), want); diff != nil {
-			t.Error(diff)
+		got := string(b)
+		if diff := cmp.Diff(want, got); diff != "" {
+			t.Errorf("mismatch (-want +got):\n%s", diff)
 		}
 	})
 }

pkg/di/di.go

@@ -5,17 +5,19 @@ package di
 
 import (
 	"github.com/google/wire"
+	"github.com/int128/kubelogin/pkg/adaptors/browser"
 	"github.com/int128/kubelogin/pkg/adaptors/certpool"
+	"github.com/int128/kubelogin/pkg/adaptors/clock"
 	"github.com/int128/kubelogin/pkg/adaptors/cmd"
-	credentialPluginAdaptor "github.com/int128/kubelogin/pkg/adaptors/credentialplugin"
-	"github.com/int128/kubelogin/pkg/adaptors/env"
-	"github.com/int128/kubelogin/pkg/adaptors/jwtdecoder"
+	"github.com/int128/kubelogin/pkg/adaptors/credentialpluginwriter"
 	"github.com/int128/kubelogin/pkg/adaptors/kubeconfig"
 	"github.com/int128/kubelogin/pkg/adaptors/logger"
 	"github.com/int128/kubelogin/pkg/adaptors/oidcclient"
+	"github.com/int128/kubelogin/pkg/adaptors/reader"
+	"github.com/int128/kubelogin/pkg/adaptors/stdio"
 	"github.com/int128/kubelogin/pkg/adaptors/tokencache"
 	"github.com/int128/kubelogin/pkg/usecases/authentication"
-	credentialPluginUseCase "github.com/int128/kubelogin/pkg/usecases/credentialplugin"
+	"github.com/int128/kubelogin/pkg/usecases/credentialplugin"
 	"github.com/int128/kubelogin/pkg/usecases/setup"
 	"github.com/int128/kubelogin/pkg/usecases/standalone"
 )
@@ -23,42 +25,34 @@ import (
 // NewCmd returns an instance of adaptors.Cmd.
 func NewCmd() cmd.Interface {
 	wire.Build(
-		// use-cases
-		authentication.Set,
-		wire.Value(authentication.DefaultLocalServerReadyFunc),
-		standalone.Set,
-		credentialPluginUseCase.Set,
-		setup.Set,
+		NewCmdForHeadless,
 
-		// adaptors
-		cmd.Set,
-		env.Set,
-		kubeconfig.Set,
-		tokencache.Set,
-		credentialPluginAdaptor.Set,
-		oidcclient.Set,
-		jwtdecoder.Set,
-		certpool.Set,
+		// dependencies for production
+		clock.Set,
+		stdio.Set,
 		logger.Set,
+		browser.Set,
 	)
 	return nil
 }
 
 // NewCmdForHeadless returns an instance of adaptors.Cmd for headless testing.
-func NewCmdForHeadless(logger.Interface, authentication.LocalServerReadyFunc, credentialPluginAdaptor.Interface) cmd.Interface {
+func NewCmdForHeadless(clock.Interface, stdio.Stdin, stdio.Stdout, logger.Interface, browser.Interface) cmd.Interface {
 	wire.Build(
+		// use-cases
 		authentication.Set,
 		standalone.Set,
-		credentialPluginUseCase.Set,
+		credentialplugin.Set,
 		setup.Set,
 
+		// adaptors
 		cmd.Set,
-		env.Set,
+		reader.Set,
 		kubeconfig.Set,
 		tokencache.Set,
 		oidcclient.Set,
-		jwtdecoder.Set,
 		certpool.Set,
+		credentialpluginwriter.Set,
 	)
 	return nil
 }

pkg/di/wire_gen.go

@@ -6,73 +6,96 @@
 package di
 
 import (
+	"github.com/int128/kubelogin/pkg/adaptors/browser"
 	"github.com/int128/kubelogin/pkg/adaptors/certpool"
+	"github.com/int128/kubelogin/pkg/adaptors/clock"
 	"github.com/int128/kubelogin/pkg/adaptors/cmd"
-	"github.com/int128/kubelogin/pkg/adaptors/credentialplugin"
-	"github.com/int128/kubelogin/pkg/adaptors/env"
-	"github.com/int128/kubelogin/pkg/adaptors/jwtdecoder"
+	"github.com/int128/kubelogin/pkg/adaptors/credentialpluginwriter"
 	"github.com/int128/kubelogin/pkg/adaptors/kubeconfig"
 	"github.com/int128/kubelogin/pkg/adaptors/logger"
 	"github.com/int128/kubelogin/pkg/adaptors/oidcclient"
+	"github.com/int128/kubelogin/pkg/adaptors/reader"
+	"github.com/int128/kubelogin/pkg/adaptors/stdio"
 	"github.com/int128/kubelogin/pkg/adaptors/tokencache"
 	"github.com/int128/kubelogin/pkg/usecases/authentication"
-	credentialplugin2 "github.com/int128/kubelogin/pkg/usecases/credentialplugin"
+	"github.com/int128/kubelogin/pkg/usecases/authentication/authcode"
+	"github.com/int128/kubelogin/pkg/usecases/authentication/ropc"
+	"github.com/int128/kubelogin/pkg/usecases/credentialplugin"
 	"github.com/int128/kubelogin/pkg/usecases/setup"
 	"github.com/int128/kubelogin/pkg/usecases/standalone"
+	"os"
 )
 
 // Injectors from di.go:
 
+// NewCmd returns an instance of adaptors.Cmd.
 func NewCmd() cmd.Interface {
+	clockReal := &clock.Real{}
+	stdin := _wireFileValue
+	stdout := _wireOsFileValue
 	loggerInterface := logger.New()
+	browserBrowser := &browser.Browser{}
+	cmdInterface := NewCmdForHeadless(clockReal, stdin, stdout, loggerInterface, browserBrowser)
+	return cmdInterface
+}
+
+var (
+	_wireFileValue   = os.Stdin
+	_wireOsFileValue = os.Stdout
+)
+
+// NewCmdForHeadless returns an instance of adaptors.Cmd for headless testing.
+func NewCmdForHeadless(clockInterface clock.Interface, stdin stdio.Stdin, stdout stdio.Stdout, loggerInterface logger.Interface, browserInterface browser.Interface) cmd.Interface {
 	factory := &oidcclient.Factory{
+		Clock:  clockInterface,
 		Logger: loggerInterface,
 	}
-	decoder := &jwtdecoder.Decoder{}
-	envEnv := &env.Env{}
-	localServerReadyFunc := _wireLocalServerReadyFuncValue
-	authCode := &authentication.AuthCode{
-		Env:                  envEnv,
-		Logger:               loggerInterface,
-		LocalServerReadyFunc: localServerReadyFunc,
+	authcodeBrowser := &authcode.Browser{
+		Browser: browserInterface,
+		Logger:  loggerInterface,
 	}
-	authCodeKeyboard := &authentication.AuthCodeKeyboard{
-		Env:    envEnv,
+	readerReader := &reader.Reader{
+		Stdin: stdin,
+	}
+	keyboard := &authcode.Keyboard{
+		Reader: readerReader,
 		Logger: loggerInterface,
 	}
-	ropc := &authentication.ROPC{
-		Env:    envEnv,
+	ropcROPC := &ropc.ROPC{
+		Reader: readerReader,
 		Logger: loggerInterface,
 	}
 	authenticationAuthentication := &authentication.Authentication{
-		OIDCClientFactory: factory,
-		JWTDecoder:        decoder,
-		Logger:            loggerInterface,
-		AuthCode:          authCode,
-		AuthCodeKeyboard:  authCodeKeyboard,
-		ROPC:              ropc,
+		OIDCClient:       factory,
+		Logger:           loggerInterface,
+		Clock:            clockInterface,
+		AuthCodeBrowser:  authcodeBrowser,
+		AuthCodeKeyboard: keyboard,
+		ROPC:             ropcROPC,
 	}
 	kubeconfigKubeconfig := &kubeconfig.Kubeconfig{
 		Logger: loggerInterface,
 	}
-	certpoolFactory := &certpool.Factory{}
+	newFunc := _wireNewFuncValue
 	standaloneStandalone := &standalone.Standalone{
-		Authentication:  authenticationAuthentication,
-		Kubeconfig:      kubeconfigKubeconfig,
-		CertPoolFactory: certpoolFactory,
-		Logger:          loggerInterface,
+		Authentication: authenticationAuthentication,
+		Kubeconfig:     kubeconfigKubeconfig,
+		NewCertPool:    newFunc,
+		Logger:         loggerInterface,
 	}
 	root := &cmd.Root{
 		Standalone: standaloneStandalone,
 		Logger:     loggerInterface,
 	}
 	repository := &tokencache.Repository{}
-	interaction := &credentialplugin.Interaction{}
-	getToken := &credentialplugin2.GetToken{
+	writer := &credentialpluginwriter.Writer{
+		Stdout: stdout,
+	}
+	getToken := &credentialplugin.GetToken{
 		Authentication:       authenticationAuthentication,
 		TokenCacheRepository: repository,
-		CertPoolFactory:      certpoolFactory,
-		Interaction:          interaction,
+		NewCertPool:          newFunc,
+		Writer:               writer,
 		Logger:               loggerInterface,
 	}
 	cmdGetToken := &cmd.GetToken{
@@ -80,9 +103,9 @@ func NewCmd() cmd.Interface {
 		Logger:   loggerInterface,
 	}
 	setupSetup := &setup.Setup{
-		Authentication:  authenticationAuthentication,
-		CertPoolFactory: certpoolFactory,
-		Logger:          loggerInterface,
+		Authentication: authenticationAuthentication,
+		NewCertPool:    newFunc,
+		Logger:         loggerInterface,
 	}
 	cmdSetup := &cmd.Setup{
 		Setup: setupSetup,
@@ -97,75 +120,5 @@ func NewCmd() cmd.Interface {
 }
 
 var (
-	_wireLocalServerReadyFuncValue = authentication.DefaultLocalServerReadyFunc
+	_wireNewFuncValue = certpool.NewFunc(certpool.New)
 )
-
-func NewCmdForHeadless(loggerInterface logger.Interface, localServerReadyFunc authentication.LocalServerReadyFunc, credentialpluginInterface credentialplugin.Interface) cmd.Interface {
-	factory := &oidcclient.Factory{
-		Logger: loggerInterface,
-	}
-	decoder := &jwtdecoder.Decoder{}
-	envEnv := &env.Env{}
-	authCode := &authentication.AuthCode{
-		Env:                  envEnv,
-		Logger:               loggerInterface,
-		LocalServerReadyFunc: localServerReadyFunc,
-	}
-	authCodeKeyboard := &authentication.AuthCodeKeyboard{
-		Env:    envEnv,
-		Logger: loggerInterface,
-	}
-	ropc := &authentication.ROPC{
-		Env:    envEnv,
-		Logger: loggerInterface,
-	}
-	authenticationAuthentication := &authentication.Authentication{
-		OIDCClientFactory: factory,
-		JWTDecoder:        decoder,
-		Logger:            loggerInterface,
-		AuthCode:          authCode,
-		AuthCodeKeyboard:  authCodeKeyboard,
-		ROPC:              ropc,
-	}
-	kubeconfigKubeconfig := &kubeconfig.Kubeconfig{
-		Logger: loggerInterface,
-	}
-	certpoolFactory := &certpool.Factory{}
-	standaloneStandalone := &standalone.Standalone{
-		Authentication:  authenticationAuthentication,
-		Kubeconfig:      kubeconfigKubeconfig,
-		CertPoolFactory: certpoolFactory,
-		Logger:          loggerInterface,
-	}
-	root := &cmd.Root{
-		Standalone: standaloneStandalone,
-		Logger:     loggerInterface,
-	}
-	repository := &tokencache.Repository{}
-	getToken := &credentialplugin2.GetToken{
-		Authentication:       authenticationAuthentication,
-		TokenCacheRepository: repository,
-		CertPoolFactory:      certpoolFactory,
-		Interaction:          credentialpluginInterface,
-		Logger:               loggerInterface,
-	}
-	cmdGetToken := &cmd.GetToken{
-		GetToken: getToken,
-		Logger:   loggerInterface,
-	}
-	setupSetup := &setup.Setup{
-		Authentication:  authenticationAuthentication,
-		CertPoolFactory: certpoolFactory,
-		Logger:          loggerInterface,
-	}
-	cmdSetup := &cmd.Setup{
-		Setup: setupSetup,
-	}
-	cmdCmd := &cmd.Cmd{
-		Root:     root,
-		GetToken: cmdGetToken,
-		Setup:    cmdSetup,
-		Logger:   loggerInterface,
-	}
-	return cmdCmd
-}

pkg/domain/oidc/oidc.go

@@ -1,65 +0,0 @@
-package oidc
-
-import (
-	"crypto/rand"
-	"crypto/sha256"
-	"encoding/base64"
-	"encoding/binary"
-	"strings"
-
-	"golang.org/x/xerrors"
-)
-
-func NewState() (string, error) {
-	b, err := random32()
-	if err != nil {
-		return "", xerrors.Errorf("could not generate a random: %w", err)
-	}
-	return base64URLEncode(b), nil
-}
-
-func NewNonce() (string, error) {
-	b, err := random32()
-	if err != nil {
-		return "", xerrors.Errorf("could not generate a random: %w", err)
-	}
-	return base64URLEncode(b), nil
-}
-
-type PKCEParams struct {
-	CodeChallenge       string
-	CodeChallengeMethod string
-	CodeVerifier        string
-}
-
-func NewPKCEParams() (*PKCEParams, error) {
-	b, err := random32()
-	if err != nil {
-		return nil, xerrors.Errorf("could not generate a random: %w", err)
-	}
-	s := computeS256(b)
-	return &s, nil
-}
-
-func random32() ([]byte, error) {
-	b := make([]byte, 32)
-	if err := binary.Read(rand.Reader, binary.LittleEndian, b); err != nil {
-		return nil, xerrors.Errorf("could not read: %w", err)
-	}
-	return b, nil
-}
-
-func computeS256(b []byte) PKCEParams {
-	v := base64URLEncode(b)
-	s := sha256.New()
-	_, _ = s.Write([]byte(v))
-	return PKCEParams{
-		CodeChallenge:       base64URLEncode(s.Sum(nil)),
-		CodeChallengeMethod: "S256",
-		CodeVerifier:        v,
-	}
-}
-
-func base64URLEncode(b []byte) string {
-	return strings.TrimRight(base64.URLEncoding.EncodeToString(b), "=")
-}

pkg/domain/oidc/oidc_test.go

@@ -1,25 +0,0 @@
-package oidc
-
-import (
-	"testing"
-)
-
-func Test_computeS256(t *testing.T) {
-	// Testdata described at:
-	// https://tools.ietf.org/html/rfc7636#appendix-B
-	b := []byte{
-		116, 24, 223, 180, 151, 153, 224, 37, 79, 250, 96, 125, 216, 173,
-		187, 186, 22, 212, 37, 77, 105, 214, 191, 240, 91, 88, 5, 88, 83,
-		132, 141, 121,
-	}
-	p := computeS256(b)
-	if want := "dBjftJeZ4CVP-mB92K27uhbUJU1p1r_wW1gFWFOEjXk"; want != p.CodeVerifier {
-		t.Errorf("CodeVerifier wants %s but was %s", want, p.CodeVerifier)
-	}
-	if want := "E9Melhoa2OwvFrEMTJguCHaoeK1t8URWbuGJSstw-cM"; want != p.CodeChallenge {
-		t.Errorf("CodeChallenge wants %s but was %s", want, p.CodeChallenge)
-	}
-	if p.CodeChallengeMethod != "S256" {
-		t.Errorf("CodeChallengeMethod wants S256 but was %s", p.CodeChallengeMethod)
-	}
-}

pkg/jwt/decode.go

@@ -0,0 +1,72 @@
+// Package jwt provides JWT manipulations.
+// See https://tools.ietf.org/html/rfc7519#section-4.1.3
+package jwt
+
+import (
+	"bytes"
+	"encoding/base64"
+	"encoding/json"
+	"strings"
+	"time"
+
+	"golang.org/x/xerrors"
+)
+
+// DecodeWithoutVerify decodes the JWT string and returns the claims.
+// Note that this method does not verify the signature and always trust it.
+func DecodeWithoutVerify(s string) (*Claims, error) {
+	payload, err := DecodePayloadAsRawJSON(s)
+	if err != nil {
+		return nil, xerrors.Errorf("could not decode the payload: %w", err)
+	}
+	var claims struct {
+		Subject   string `json:"sub,omitempty"`
+		ExpiresAt int64  `json:"exp,omitempty"`
+	}
+	if err := json.NewDecoder(bytes.NewReader(payload)).Decode(&claims); err != nil {
+		return nil, xerrors.Errorf("could not decode the json of token: %w", err)
+	}
+	var prettyJson bytes.Buffer
+	if err := json.Indent(&prettyJson, payload, "", "  "); err != nil {
+		return nil, xerrors.Errorf("could not indent the json of token: %w", err)
+	}
+	return &Claims{
+		Subject: claims.Subject,
+		Expiry:  time.Unix(claims.ExpiresAt, 0),
+		Pretty:  prettyJson.String(),
+	}, nil
+}
+
+// DecodePayloadAsPrettyJSON decodes the JWT string and returns the pretty JSON string.
+func DecodePayloadAsPrettyJSON(s string) (string, error) {
+	payload, err := DecodePayloadAsRawJSON(s)
+	if err != nil {
+		return "", xerrors.Errorf("could not decode the payload: %w", err)
+	}
+	var prettyJson bytes.Buffer
+	if err := json.Indent(&prettyJson, payload, "", "  "); err != nil {
+		return "", xerrors.Errorf("could not indent the json of token: %w", err)
+	}
+	return prettyJson.String(), nil
+}
+
+// DecodePayloadAsRawJSON extracts the payload and returns the raw JSON.
+func DecodePayloadAsRawJSON(s string) ([]byte, error) {
+	parts := strings.SplitN(s, ".", 3)
+	if len(parts) != 3 {
+		return nil, xerrors.Errorf("wants %d segments but got %d segments", 3, len(parts))
+	}
+	payloadJSON, err := decodePayload(parts[1])
+	if err != nil {
+		return nil, xerrors.Errorf("could not decode the payload: %w", err)
+	}
+	return payloadJSON, nil
+}
+
+func decodePayload(payload string) ([]byte, error) {
+	b, err := base64.URLEncoding.WithPadding(base64.NoPadding).DecodeString(payload)
+	if err != nil {
+		return nil, xerrors.Errorf("invalid base64: %w", err)
+	}
+	return b, nil
+}

pkg/jwt/decode_test.go

@@ -0,0 +1,48 @@
+package jwt
+
+import (
+	"testing"
+	"time"
+
+	"github.com/google/go-cmp/cmp"
+)
+
+func TestDecode(t *testing.T) {
+	t.Run("ValidToken", func(t *testing.T) {
+		const (
+			// https://tools.ietf.org/html/rfc7519#section-3.1
+			header    = "eyJ0eXAiOiJKV1QiLA0KICJhbGciOiJIUzI1NiJ9"
+			payload   = "eyJpc3MiOiJqb2UiLA0KICJleHAiOjEzMDA4MTkzODAsDQogImh0dHA6Ly9leGFtcGxlLmNvbS9pc19yb290Ijp0cnVlfQ"
+			signature = "dBjftJeZ4CVP-mB92K27uhbUJU1p1r_wW1gFWFOEjXk"
+			token     = header + "." + payload + "." + signature
+		)
+		got, err := DecodeWithoutVerify(token)
+		if err != nil {
+			t.Fatalf("Decode error: %s", err)
+		}
+		want := &Claims{
+			Subject: "",
+			Expiry:  time.Unix(1300819380, 0),
+			Pretty: `{
+  "iss": "joe",
+  "exp": 1300819380,
+  "http://example.com/is_root": true
+}`,
+		}
+		if diff := cmp.Diff(want, got); diff != "" {
+			t.Errorf("mismatch (-want +got):\n%s", diff)
+		}
+	})
+
+	t.Run("InvalidToken", func(t *testing.T) {
+		decodedToken, err := DecodeWithoutVerify("HEADER.INVALID_TOKEN.SIGNATURE")
+		if err == nil {
+			t.Errorf("error wants non-nil but nil")
+		} else {
+			t.Logf("expected error: %+v", err)
+		}
+		if decodedToken != nil {
+			t.Errorf("decodedToken wants nil but %+v", decodedToken)
+		}
+	})
+}

pkg/jwt/token.go

@@ -0,0 +1,20 @@
+package jwt
+
+import "time"
+
+// Claims represents claims of an ID token.
+type Claims struct {
+	Subject string
+	Expiry  time.Time
+	Pretty  string // string representation for debug and logging
+}
+
+// Clock provides the current time.
+type Clock interface {
+	Now() time.Time
+}
+
+// IsExpired returns true if the token is expired.
+func (c *Claims) IsExpired(clock Clock) bool {
+	return c.Expiry.Before(clock.Now())
+}