Add sg-send-email

sg-send-email.sh

@@ -0,0 +1,62 @@
+#!/usr/bin/bash 
+# Simple script to send email notifications via the Sendgrid API.
+
+sg_key_file="./sg_key"
+
+print_usage () {
+   echo "Usage: "$0" -f EMAIL_FROM -n EMAIL_NAME -t EMAIL_TO -s SUBJECT -m MESSAGE [-k SG_KEY_FILE]"
+   echo "EMAIL_FROM - sender's email address"
+   echo "EMAIL_NAME - sender's name"
+   echo "EMAIL_TO - recipient's email adress"
+   echo "SG_KEY_FILE - a path to the file with Sendgrid API key (default: ./sg_key)"
+}
+
+send_email () {
+   maildata='{"personalizations": [{"to": [{"email": "'${email_to}'"}]}],"from": {"email": "'${email_from}'",
+   "name": "'${email_name}'"},"subject": "'${subject}'","content": [{"type": "text/plain", "value": "'${message}'"}]}'
+   
+   curl -X "POST" "https://api.sendgrid.com/v3/mail/send" \
+      -H "Authorization: Bearer $sg_key" \
+      -H "Content-Type: application/json" \
+      -d "$maildata"
+}
+
+while getopts "f:n:t:s:m:k:h" opt
+do
+   case $opt in
+      f)
+         email_from="${OPTARG}";;
+      n)
+         email_name="${OPTARG}";;
+      t)
+         email_to="${OPTARG}";;
+      s)
+         subject="${OPTARG}";;
+      m)
+         message="${OPTARG}";;
+      k)
+         sg_key_file="${OPTARG}";;
+      h)
+         print_usage
+         exit 3
+         ;;
+   esac
+done
+
+if [[ ! -f $sg_key_file ]]; then
+    echo "API key file \"$sg_key_file\" does not exist"
+    exit 1
+fi
+
+if [[ "$(stat -c "%a" $sg_key_file)" != "400" ]]; then
+    echo "Unsafe API key file permissions"
+    exit 1
+fi
+
+if [[ "$(wc -l $sg_key_file | cut -d" " -f1)" != "1" ]]; then
+   echo "Wrong API key format"
+   exit 1
+fi
+
+sg_key="$(cat $sg_key_file)"
+send_email