initial commit of script, version 0.1

update-mailcow-certs.sh

@@ -0,0 +1,120 @@
+#!/bin/bash
+#
+# configuration
+#
+VERSION=0.1
+#
+VERBOSE=1
+# send an email, setting default subject... 
+EMAIL_SUBJ="MailCow cert for $DOMAIN"
+#
+EMAIL=sysadmin@oerfoundation.org
+# Mailcow stuff
+DOMAIN=about.oerfoundation.org
+MCDIR=/home/docker/mailcow
+SSLDIR=data/assets/ssl
+MCCA=$MCDIR/$SSLDIR/cert.pem
+MCPRIV=$MCDIR/$SSLDIR/key.pem
+# Let's Encrypt stuff
+LEDIR=/etc/letsencrypt/live/$DOMAIN
+LECA=$LEDIR/fullchain.pem
+LEPRIV=$LEDIR/privkey.pem
+# 
+# Defaults
+LOG=/var/log/$0.log
+#
+# Automated defaults
+#
+LS=`which ls`
+DATE=`date '+%Y-%m-%d'`
+# email program
+MAIL=`which mail`
+# temporary holding point for email
+TMP_EMAIL=/tmp/tmp_email.$0.$DATE_$TIME
+#
+# Functions
+#
+# get the file date in seconds since 1970
+getfiledate() {
+    local DATE=`$LS -l --time-style=+"%s" $@ | cut -d " " -sf 6`
+    echo $DATE
+}
+#
+# put a message in the log
+message() {
+    #
+    # a timestamp for logging purposes
+    local TIMESTAMP=`date  '+%Y-%m-%d %H:%M.%S'`
+    if test $VERBOSE = 1 ; then
+	echo "$@"
+    else
+        echo "$0: $TIMESTAMP $@" >> $LOG
+        if test -f $TMP_EMAIL ; then
+            echo "$0: $TIMESTAMP $@" >> $TMP_EMAIL
+        fi
+    fi
+}
+#
+# create the temporary email file
+create_tmp_email() {
+  touch $TMP_EMAIL
+  if test -f $TMP_EMAIL ; then
+    message "created temporary email  $TMP_EMAIL"
+  else
+    message "failed to create temporary email  $TMP_EMAIL"
+  fi
+}
+#
+# send the contents of the temporary file to the
+# designated report recipient
+send_email_report() {
+     if test -f $TMP_EMAIL ; then
+        message "sending email report to $EMAIL"
+        $MAIL -s "$EMAIL_SUBJ" $EMAIL < $TMP_EMAIL
+        rm $TMP_EMAIL
+        if test -f $TMP_EMAIL ; then
+            message "failed to remove temporary email  $TMP_EMAIL"
+        else
+            message "successfully removed temporary email  $TMP_EMAIL"
+        fi
+        message "email report successfully sent"
+    fi
+}
+
+
+# get the dates for the files... 
+MCCA_DATE=$(getfiledate $MCCA)
+#MCPRIV_DATE=$(getfiledate $MCPRIV_DATE)
+LECA_DATE=$(getfiledate $LECA)
+#LEPRIV_DATE=$(getfiledate $LEPRIV_DATE)
+
+# is the Let's Encrypt CA more recent than that used by Mailcow?
+# If so - update the Mailcow ones, reload Mailcow, and alert the webmaster
+if (( "$LECA_DATE" > "$MCCA_DATE" )) ; then
+    create_tmp_email
+    message "Need to update MailCow certs for $DOMAIN!"
+    # backup the current files
+    cp $MCCA $MCCA.${DATE}
+    cp $MCPRIV $MCPRIV.${DATE}
+    # now copy over the updated files, dereferencing the Let's Encrypt links 
+    cp -L $LECA $MCCA
+    cp -L $LEPRIV $MCPRIV
+    # get the dates for the MailCow certs again:
+    TIMESTAMP=`date  '+%Y-%m-%d %H:%M.%S'`
+    MCCA_DATE=$(getfiledate $MCCA)
+    MCPRIV_DATE=$(getfiledate $MCPRIV_DATE)
+    if (( "$MCCA_DATE" < "$LECA_DATE" && "$MCPRIV_DATE" < "$LECAPRIV_DATE" )) ; then 
+        msg="Updated $MCCA and $MCPRIV at $TIMESTAMP"
+	EMAIL_SUBJ='Success! '${EMAIL_SUBJ}
+    else
+	msg="Failed to update $MCCA and $MCPRIV at $TIMESTAMP"
+	EMAIL_SUBJ='Failed! '${EMAIL_SUBJ}	
+    fi
+    message $msg
+    email $msg
+    send_email_report
+else
+    message "MailCow certs for $DOMAIN still current..."
+fi
+
+