add TID and replace old MD5 by SHA256

contrib/faces/gravatar2card.sh

@@ -1,7 +1,7 @@
 #!/bin/sh
 
 # gravatar2card.sh
-# Copyright (C) 2015-2016 Jan-Piet Mens <jpmens@gmail.com>
+# Copyright (C) 2015-2024 Jan-Piet Mens <jpmens@gmail.com>
 # 
 # This program is free software; you can redistribute it and/or
 # modify it under the terms of the GNU General Public License
@@ -17,7 +17,7 @@
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
-# Usage: gravatar2card email "full name"
+# Usage: gravatar2card email "full name" tid
 #
 # Calculate email hash and obtain a 40x40 PNG from Gravatar
 # and convert image to BASE64. Create a JSON payload to be published
@@ -25,7 +25,7 @@
 #
 # You probably want to do this:
 #
-# gravatar2card.sh email-address  "Jane Jolie" > card.json
+# gravatar2card.sh email-address  "Jane Jolie" JJ > card.json
 # mosquitto_pub -t owntracks/jane/phone/info -r -f card.json
 #
 # Note: the two commands cannot be piplelined (mosquitto_pub -l)
@@ -33,19 +33,20 @@
 # If you have a newer version it should work fine.
 
 
-[ $# -ne 2 ] && { echo "Usage: $0 email full-name" >&2; exit 2; }
+[ $# -ne 3 ] && { echo "Usage: $0 email full-name tid" >&2; exit 2; }
 
-md5=md5
+hasher="shasum -a 256"
 if [ -x /usr/bin/md5sum ]; then
 	md5=/usr/bin/md5sum
 fi
 
 email="$1"
 fullname="$2"
+tid="$3"
 tmp=$(mktemp /tmp/gravatar.XXXXXX)
 
-hash=$(echo -n "${email}" | tr '[:upper:]' '[:lower:]' | $md5)
-url="http://www.gravatar.com/avatar/${hash}?s=40"
+hash=$(printf "${email}" | tr '[:upper:]' '[:lower:]' | $hasher | cut -d' ' -f1)
+url="https://www.gravatar.com/avatar/${hash}?s=40"
 
 
 curl -s -o $tmp "${url}"
@@ -54,6 +55,6 @@ imgdata=$(base64 -i $tmp)
 rm -f $tmp
 
 cat <<EndOfFile
-{"_type":"card","name":"${fullname}","face":"${imgdata}"}
+{"_type":"card","tid":"${tid}","name":"${fullname}","face":"${imgdata}"}
 EndOfFile