Added CI and updated Bash script.

.github/workflows/ci.yml

@@ -0,0 +1,71 @@
+name: CI
+
+on:
+  push:
+  pull_request:
+  schedule:
+    - cron:  '0 0 1 * *'
+
+jobs:
+  Linux:
+    name: Linux Bash
+
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Script
+      run: |
+        bash -e -o pipefail -- sendmsg.sh -h
+    - name: ShellCheck
+      run: shopt -s globstar; shellcheck -o avoid-nullary-conditions,check-extra-masked-returns,check-set-e-suppressed,deprecate-which,quote-safe-variables,require-double-brackets -s bash **/*.sh
+      continue-on-error: true
+
+  Pylint:
+    name: Pylint
+
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Install dependencies
+      run: |
+        python3 -m pip install --upgrade pip
+        python3 -m pip install pylint
+    - name: Script
+      run: pylint -f colorized --py-version 3.7 -d design,C0103,W0311,C0301,C0302,C0209 --load-plugins pylint.extensions.code_style,pylint.extensions.comparison_placement,pylint.extensions.for_any_all,pylint.extensions.consider_refactoring_into_while_condition,pylint.extensions.consider_ternary_expression,pylint.extensions.dict_init_mutate,pylint.extensions.docstyle,pylint.extensions.check_elif,pylint.extensions.set_membership,pylint.extensions.typing -e R6104,C1804,C1805 -r y python-port/
+      continue-on-error: true
+
+  Ruff:
+    name: Ruff
+
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Install dependencies
+      run: |
+        python3 -m pip install --upgrade pip
+        python3 -m pip install ruff
+    - name: Script
+      run: ruff --output-format=github --target-version py37 --select F,E4,E7,E9,W,I,D,UP,YTT,ANN,S,BLE,B,A,COM819,C4,T10,EM,EXE,ISC,ICN,G,PIE,PYI,Q,RSE,RET,SLF,SLOT,SIM,TID,TCH,ARG,PGH,PL,TRY,FLY,PERF,FURB,LOG,RUF --preview --ignore W191,D211,D213,D401,PLR09,PLR2004,RUF001,RUF002,RUF003 .
+      continue-on-error: true
+
+  Python:
+    name: Linux Python
+
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11", "pypy3.7", "pypy3.8", "pypy3.9", "pypy3.10"]
+      fail-fast: false
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v5
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+    - name: Script
+      run: |
+        python -X dev python-port/sendpy/ --help

README.md

@@ -7,11 +7,11 @@ Send [e-mail](https://en.wikipedia.org/wiki/Email) (and [text messages](https://
 
 Useful to know when a cron job failed, when a long running job (LRP) has finished, to quickly backup/share a file or to send notifications as part of a larger script.
 
-❤️ Please visit [tealdulcet.com](https://www.tealdulcet.com/) to support these script and my other software development.
+❤️ Please visit [tealdulcet.com](https://www.tealdulcet.com/) to support these scripts and my other software development.
 
 ## Usage
 
-Requires Bash 4.4 and the curl and netcat commands, which are included on most Linux distributions.
+Requires at least Bash 4.4 and the curl and netcat commands, which are included on most Linux distributions.
 
 Optional [S/MIME](https://en.wikipedia.org/wiki/S/MIME) digital signatures require the openssl command.\
 Optional [PGP/MIME](https://en.wikipedia.org/wiki/Pretty_Good_Privacy#OpenPGP) digital signatures require the gpg command.
@@ -170,7 +170,7 @@ You will also need to either create an [App Password](https://support.google.com
   </tr>
   <tr>
     <th colspan="2">Supports International email addresses</th>
-    <td>✔^</td>
+    <td>✔†</td>
     <td>✔</td>
     <td>✔</td>
     <td></td>
@@ -242,8 +242,7 @@ You will also need to either create an [App Password](https://support.google.com
 </table>
 
 \* Optional\
-^ Only supported in Internationalizing Domain Names in Applications (IDNA) encoding\
-^^ Does not work with all mobile providers
+† Only supported in Internationalizing Domain Names in Applications (IDNA) encoding
 
 This is not a comprehensive list of the Send E-mail Script’s functionality.
 

sendmsg.sh

@@ -19,7 +19,7 @@ set -e
 SEND=1
 
 # To e-mail addresses
-# Send SMSs by using your mobile providers e-mail to SMS or MMS gateway (https://en.wikipedia.org/wiki/SMS_gateway#Email_clients)
+# Send text messages by using your mobile providers e-mail to SMS or MMS gateway (https://en.wikipedia.org/wiki/SMS_gateway#Email_clients)
 TOEMAILS=(
 
 )
@@ -148,34 +148,34 @@ Options:
 
 Examples:
     Send e-mail
-    $ $1 -s \"Example\" -t \"Example <example@example.com>\"
+    $ $1 -s \"Example\" -t \"User <user@example.com>\"
 
     Send e-mail with message
-    $ $1 -s \"Example\" -m \"This is an example"'!'"\" -t \"Example <example@example.com>\"
+    $ $1 -s \"Example\" -m \"This is an example"'!'"\" -t \"User <user@example.com>\"
 
     Send e-mail with message and single attachment
-    $ $1 -s \"Example\" -m \"This is an example"'!'"\" -a example.txt -t \"Example <example@example.com>\"
+    $ $1 -s \"Example\" -m \"This is an example"'!'"\" -a example.txt -t \"User <user@example.com>\"
 
     Send e-mail with message and multiple attachments
-    $ $1 -s \"Example\" -m \"This is an example"'!'"\" -a example1.txt -a example2.txt -t \"Example <example@example.com>\"
+    $ $1 -s \"Example\" -m \"This is an example"'!'"\" -a example1.txt -a example2.txt -t \"User <user@example.com>\"
 
     Send e-mail to a CC address
-    $ $1 -s \"Example\" -t \"Example 1 <example1@example.com>\" -c \"Example 2 <example2@example.com>\"
+    $ $1 -s \"Example\" -t \"User 1 <user1@example.com>\" -c \"User 2 <user2@example.com>\"
 
     Send e-mail with a From address
-    $ $1 -s \"Example\" -f \"Example <[email protected]>\" -t \"Example <example@example.com>\"
+    $ $1 -s \"Example\" -f \"Example <[email protected]>\" -t \"User <user@example.com>\"
 
     Send e-mail with an external SMTP server
-    $ $1 -s \"Example\" -f \"Example <[email protected]>\" -S \"smtps://mail.example.com\" -u \"example\" -p \"password\" -t \"Example <example@example.com>\"
+    $ $1 -s \"Example\" -f \"Example <[email protected]>\" -S \"smtps://mail.example.com\" -u \"example\" -p \"password\" -t \"User <user@example.com>\"
 
     Send high priority e-mail
-    $ $1 -s \"Example\" -f \"Example <[email protected]>\" -S \"smtps://mail.example.com\" -u \"example\" -p \"password\" -P \"1 (Highest)\" -t \"Example <example@example.com>\"
+    $ $1 -s \"Example\" -f \"Example <[email protected]>\" -S \"smtps://mail.example.com\" -u \"example\" -p \"password\" -P \"1 (Highest)\" -t \"User <user@example.com>\"
 
     Send e-mail digitally signed with an S/MIME Certificate
-    $ $1 -s \"Example\" -f \"Example <[email protected]>\" -S \"smtps://mail.example.com\" -u \"example\" -p \"password\" -C \"cert.p12\" -t \"Example <example@example.com>\"
+    $ $1 -s \"Example\" -f \"Example <[email protected]>\" -S \"smtps://mail.example.com\" -u \"example\" -p \"password\" -C \"cert.p12\" -t \"User <user@example.com>\"
 
     Send e-mail digitally signed with PGP/MIME
-    $ $1 -s \"Example\" -f \"Example <[email protected]>\" -S \"smtps://mail.example.com\" -u \"example\" -p \"password\" -k \"passphrase\" -t \"Example <example@example.com>\"
+    $ $1 -s \"Example\" -f \"Example <[email protected]>\" -S \"smtps://mail.example.com\" -u \"example\" -p \"password\" -k \"passphrase\" -t \"User <user@example.com>\"
 " >&2
 }
 
@@ -414,6 +414,11 @@ if [[ -n "$FROMADDRESS" ]] && ! [[ $FROMADDRESS =~ $RE1 && $FROMADDRESS =~ $RE2
 fi
 
 if [[ -n "$CERT" ]]; then
+	if ! command -v openssl >/dev/null; then
+		echo "Error: OpenSSL is not installed." >&2
+		exit 1
+	fi
+
 	if [[ ! -r "$CERT" && ! -f "$CLIENTCERT" ]]; then
 		echo "Error: '$CERT' certificate file does not exist." >&2
 		exit 1
@@ -422,7 +427,10 @@ if [[ -n "$CERT" ]]; then
 	if [[ ! -s "$CLIENTCERT" ]]; then
 		echo -e "Saving the client certificate from '$CERT' to '$CLIENTCERT'"
 		echo -e "Please enter the password when prompted.\n"
-		openssl pkcs12 -in "$CERT" -out "$CLIENTCERT" -clcerts -nodes
+		if ! openssl pkcs12 -in "$CERT" -out "$CLIENTCERT" -clcerts -nodes; then
+			echo "Error saving the client certificate. Trying again in legacy mode." >&2
+			openssl pkcs12 -in "$CERT" -out "$CLIENTCERT" -clcerts -nodes -legacy
+		fi
 	fi
 
 	# if ! output=$(openssl verify -verify_email "$FROMADDRESS" "$CLIENTCERT" 2>/dev/null); then
@@ -451,6 +459,11 @@ if [[ -n "$CERT" ]]; then
 fi
 
 if [[ -n "$PASSPHRASE" ]]; then
+	if ! command -v gpg >/dev/null; then
+		echo "Error: GNU Privacy Guard is not installed." >&2
+		exit 1
+	fi
+
 	if ! echo "$PASSPHRASE" | gpg --pinentry-mode loopback --batch -o /dev/null -ab -u "$FROMADDRESS" --passphrase-fd 0 <(echo); then
 		echo "Error: A PGP key pair does not yet exist for '$FROMADDRESS' or the passphrase was incorrect." >&2
 		exit 1