Fix #227: Add msal library to installation

Dockerfile

@@ -26,12 +26,6 @@ RUN        --mount=type=cache,target=/var/cache/apt,sharing=locked,id=var-cache-
            --mount=type=tmpfs,target=/tmp \
            --mount=type=bind,from=build-scripts,source=/build-scripts,target=/build-scripts \
            sh /build-scripts/postfix-install.sh
-RUN        --mount=type=cache,target=/var/cache/apt,sharing=locked,id=var-cache-apt-$TARGETPLATFORM \
-           --mount=type=cache,target=/var/lib/apt,sharing=locked,id=var-lib-apt-$TARGETPLATFORM \
-           --mount=type=tmpfs,target=/var/cache/apk \
-           --mount=type=tmpfs,target=/tmp \
-           --mount=type=bind,from=build-scripts,source=/build-scripts,target=/build-scripts \
-           python3 -m pip3 install msal
 
 # ============================ BUILD SASL XOAUTH2 ============================
 FROM base AS sasl

build-scripts/postfix-install.sh

@@ -34,6 +34,8 @@ do_alpine() {
 		musl-utils \
 		netcat-openbsd \
 		opendkim-utils \
+		python3 \
+		py3-pip
 		rsyslog \
 		supervisor \
 		tzdata
@@ -80,12 +82,15 @@ do_ubuntu() {
 		opendkim-tools \
 		postfix-lmdb \
 		procps \
+		python3 \
+		python3-pip \
 		rsyslog \
 		sasl2-bin \
 		supervisor \
 		tzdata
 	apt-get clean
 	rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*    
+
 }
 
 if [ -f /etc/alpine-release ]; then
@@ -94,6 +99,13 @@ else
 	do_ubuntu
 fi
 
+# masl is needed for the sasl-xoauth2-tool.
+PIP=pip
+if command -v pip3 > /dev/null 2>&1; then
+    PIP=pip3
+fi
+$PIP install --break-system-packages msal
+
 # Some services (eg. cron) will complain if this file does not exists, even if it's empty.
 # The file is usually generated by update-locales, which is ran automatically when you do
 # `apt-get install locales`. So instead of adding another package, which at the moment we

scripts/email-anonymizer.py

@@ -2,7 +2,7 @@
 
 """
 
-Filter to anonyimize email addresses. It reads input line by line,
+Filter to anonymize email addresses. It reads input line by line,
 finds all emails in the input and masks them using given filter.
 
 Big thanks to [Sergio Del Río Mayoral](https://github.com/sdelrio)
@@ -26,8 +26,8 @@ logger = logging.getLogger(__name__)
 # BIG FAT NOTICE on emails and regular expressions:
 # If you're planning on using a regular expression to validate an email: don't. Emails
 # are much more complex than you would imagine and most regular expressions will not
-# cover all usecases. Newer RFCs even allow for international (read: UTF-8) email addresses.
-# Most of your favourite programming languages will have a dedicated library for validating
+# cover all use cases. Newer RFCs even allow for international (read: UTF-8) email addresses.
+# Most of your favorite programming languages will have a dedicated library for validating
 # addresses.
 #
 # This pattern below, should, however match anything that remotely looks like an email.
@@ -85,7 +85,7 @@ class Filter():
         start = match.start()
         email = match.group()
 
-        # Note that our regex will match thigs like "message-id=Issue1649523226559@postfix-mail.mail-system.svc.cluster.local"
+        # Note that our regex will match things like "message-id=Issue1649523226559@postfix-mail.mail-system.svc.cluster.local"
         # so we need to filter / check for these first
 
         if email.startswith(self.MESSAGE_ID_LINE):
@@ -123,9 +123,9 @@ class Filter():
 """
 This filter will take an educated guess at how to best mask the emails, specifically:
 
-* It will leave the first and the last letter of the local part (if it's oly one letter, it will get repated)
+* It will leave the first and the last letter of the local part (if it's oly one letter, it will get repeated)
 * If the local part is in quotes, it will remove the quotes (Warning: if the email starts with a space, this might look weird in logs)
-* It will replace all the letters inbetween with **ONE** asterisk
+* It will replace all the letters in between with **ONE** asterisk
 * It will replace everything but a TLD with a star
 * Address-style domains will see the number replaced with stars