From e803b6b130de39af0684aaf6bed1f7c75550565e Mon Sep 17 00:00:00 2001
From: Bob Mottram <bob@freedombone.net>
Date: Wed, 23 May 2018 17:51:07 +0100
Subject: [PATCH] Remove ip addresses from email logs

---
 src/freedombone-base-email  | 20 ++++++++++++++++++++
 src/freedombone-upgrade     |  1 +
 src/freedombone-utils-setup |  3 +++
 3 files changed, 24 insertions(+)

diff --git a/src/freedombone-base-email b/src/freedombone-base-email
index 71b266ec..84ac0374 100755
--- a/src/freedombone-base-email
+++ b/src/freedombone-base-email
@@ -1694,4 +1694,24 @@ function install_email {
     mark_completed "${FUNCNAME[0]}"
 }
 
+function remove_ip_addresses_from_email_logs {
+    { echo '#!/bin/bash';
+      echo 'if [ -f /var/log/exim4/mainlog ]; then';
+      echo "    if grep -q '\\[' /var/log/exim4/mainlog; then";
+      echo "        tail -n 50 /var/log/exim4/mainlog | sed 's/\\[[^][]*\\]//g' > /tmp/.exim4_mainlog";
+      echo '        chown Debian-exim:adm /tmp/.exim4_mainlog';
+      echo '        mv /tmp/.exim4_mainlog /var/log/exim4/mainlog';
+      echo '    fi';
+      echo 'fi';
+      echo 'if [ -f /var/log/exim4/rejectlog ]; then';
+      echo "    if grep -q '\\[' /var/log/exim4/rejectlog; then";
+      echo "        tail -n 50 /var/log/exim4/rejectlog | sed 's/\\[[^][]*\\]//g' > /tmp/.exim4_rejectlog";
+      echo '        chown Debian-exim:adm /tmp/.exim4_rejectlog';
+      echo '        mv /tmp/.exim4_rejectlog /var/log/exim4/rejectlog';
+      echo '    fi';
+      echo 'fi'; } > /usr/bin/exim_log_tidy
+    chown +x /usr/bin/exim_log_tidy
+    cron_add_mins 1 '/usr/bin/exim_log_tidy'
+}
+
 # NOTE: deliberately no exit 0
diff --git a/src/freedombone-upgrade b/src/freedombone-upgrade
index 94c408ca..e5891212 100755
--- a/src/freedombone-upgrade
+++ b/src/freedombone-upgrade
@@ -107,6 +107,7 @@ if [ -d "$PROJECT_DIR" ]; then
         apt-get -yq -t stretch-backports install certbot
         email_install_tls
         email_disable_chunking
+        remove_ip_addresses_from_email_logs
         rm /etc/exim4/exim4.conf.template.bak*
         email_update_onion_domain
         prevent_mail_process_overrun
diff --git a/src/freedombone-utils-setup b/src/freedombone-utils-setup
index ba2a43ef..cf892569 100755
--- a/src/freedombone-utils-setup
+++ b/src/freedombone-utils-setup
@@ -1096,6 +1096,9 @@ function setup_email {
     function_check install_email
     install_email
 
+    function_check remove_ip_addresses_from_email_logs
+    remove_ip_addresses_from_email_logs
+
     function_check create_procmail
     create_procmail