Files
vim-ale/_webi/ua-detect.js

122 lines
3.3 KiB
JavaScript

'use strict';
var uaDetect = module.exports;
const MUSL_NATIVE = 'musl-native';
uaDetect.MUSL_NATIVE = MUSL_NATIVE;
function getRequest(req) {
var ua = req.headers['user-agent'] || '';
var os = req.query.os;
var arch = req.query.arch;
var scheme = req.socket.encrypted ? 'https' : 'http';
var host = req.headers.host || 'beta.webinstall.dev';
var url = scheme + '://' + host + '/api/debug';
if (os && arch) {
ua = os + ' ' + arch;
} else if (os || arch) {
ua = os || arch;
}
return {
unix: 'curl -fsSA "$(uname -srm)" ' + url,
windows: 'curl.exe -fsSA "MS $Env:PROCESSOR_ARCHITECTURE" ' + url,
ua: ua,
os: uaDetect.os(ua),
arch: uaDetect.arch(ua),
};
}
function getOs(ua) {
if ('-' === ua) {
return '-';
}
if (/Android/i.test(ua)) {
// android must be tested before linux
return 'android';
} else if (/iOS|iPhone|Macintosh|Darwin|OS\s*X|macOS|mac/i.test(ua)) {
return 'macos';
} else if (/Linux/i.test(ua) && !/cygwin|msysgit/i.test(ua)) {
// It's the year of the Linux Desktop!
// See also http://www.mslinux.org/
// 'linux' must be tested before 'Microsoft' because WSL
// (TODO: does this affect cygwin / msysgit?)
return 'linux';
} else if (/^ms$|Microsoft|Windows|win32|win|PowerShell/i.test(ua)) {
// 'win' must be tested after 'darwin'
return 'windows';
} else if (/Linux|curl|wget/i.test(ua)) {
// test 'linux' again, after 'win'
return 'linux';
} else {
return 'error';
}
}
function getArch(ua) {
if ('-' === ua) {
return '-';
}
// Quick hack for Apple Silicon M1
//
// Note: we now use `uname -srm` which does not have the native arch
// info included with `uname -v` and `uname -a`.
//
// Native: Darwin boomer.local 20.2.0 Darwin Kernel Version 20.2.0: Wed Dec 2 20:40:21 PST 2020; root:xnu-7195.60.75~1/RELEASE_ARM64_T8101 arm64
// Resetta: Darwin boomer.local 20.2.0 Darwin Kernel Version 20.2.0: Wed Dec 2 20:40:21 PST 2020; root:xnu-7195.60.75~1/RELEASE_ARM64_T8101 x86_64
ua = ua.replace(/xnu-.*RELEASE_[^\s]*/, '');
if (/aarch64|arm64|arm8|armv8/i.test(ua)) {
return 'arm64';
} else if (/aarch|arm7|armv7/i.test(ua)) {
return 'armv7l';
} else if (/arm6|armv6/i.test(ua)) {
return 'armv6l';
} else if (/ppc64le/i.test(ua)) {
return 'ppc64le';
} else if (/ppc64/i.test(ua)) {
return 'ppc64';
} else if (/mips64/i.test(ua)) {
return 'mips64';
} else if (/mips/i.test(ua)) {
return 'mips';
} else if (/(amd64|x64|_64)\b/i.test(ua)) {
// must come after ppc64/mips64
return 'amd64';
} else if (/(3|6|x|_)86\b/i.test(ua)) {
// must come after x86_64
return 'x86';
} else {
// TODO handle explicit invalid different
return 'error';
}
}
function getLibc(ua) {
if ('-' === ua) {
return '-';
}
// Use native 'libc' information, if provided
//
// Generally, we prefer 'musl' builds because they DO work on glibc systems (Ubuntu),
// but 'glibc' builds will NOT work on musl systems (Alpine / Docker).
//
// However, there are a few instances (ex: Node.js), where the 'musl' builds
// DO NOT work on glibc systems.
if (ua.match(MUSL_NATIVE)) {
return MUSL_NATIVE;
}
// TODO handle explicit invalid different
return '';
}
uaDetect.os = getOs;
uaDetect.arch = getArch;
uaDetect.libc = getLibc;
uaDetect.request = getRequest;