From b06eecc53bafcab4f0183f6b116468e95d2ff692 Mon Sep 17 00:00:00 2001
From: Christoph <ckubu@oopen.de>
Date: Sun, 1 Sep 2019 03:58:10 +0200
Subject: [PATCH] install_update_dovecot.sh: Remove crontab while updating
 dovecot.

---
 install_update_dovecot.sh | 75 +++++++++++++++++++++++++++++++++++----
 1 file changed, 68 insertions(+), 7 deletions(-)

diff --git a/install_update_dovecot.sh b/install_update_dovecot.sh
index 86d547d..687ae91 100755
--- a/install_update_dovecot.sh
+++ b/install_update_dovecot.sh
@@ -27,6 +27,8 @@ log_file="$(mktemp)"
 
 backup_date="$(date +%Y-%m-%d-%H%M)"
 
+_backup_crontab_file="/tmp/crontab_root.${backup_date}"
+
 rc_done="\033[71G[ \033[32mdone\033[m ]"
 rc_failed="\033[71G[ \033[31m\033[1mfailed\033[m ]"
 rc_skipped="\033[71G[ \033[33m\033[1mskipped\033[m ]"
@@ -36,6 +38,30 @@ rc_wait="\033[71G[ \033[5m\033[1m..\033[m ]"
 # -------------
 # - Functions an Variable
 # -------------
+clean_up() {
+
+
+   if [[ -f "$_backup_crontab_file" ]]; then
+
+      echononl "(Re)Install previously saved crontab from '$_backup_crontab_file'.."
+
+      crontab $_backup_crontab_file >> $log_file 2>&1
+
+      if [[ $? -eq 0 ]]; then
+         echo -e "$rc_done"
+      else
+         echo -e "$rc_failed"
+         error "$(cat $log_file)"
+      fi
+
+   fi
+
+   # Perform program exit housekeeping
+   rm -f $log_file
+   blank_line
+   exit $1
+}
+
 
 echononl(){
    echo X\\c > /tmp/shprompt$$
@@ -53,7 +79,7 @@ fatal(){
    echo ""
    echo -e "\t\033[31m\033[1m           Skript wird abgebrochen\033[m\033[m\n"
    rm -f $log_file
-   exit 1
+   clean_up 1
 }
 
 error(){
@@ -68,6 +94,11 @@ warn(){
    echo ""
 }
 
+blank_line() {
+   echo ""
+}
+
+
 # - Support systemd ?
 # -
 if [[ "X$(which systemd)" = "X" ]]; then
@@ -596,10 +627,42 @@ if $_new ; then
 
 fi
 
+if $update ; then
+
+   # - Deaktiviere Cronjobs
+   # -
+   echo ""
+   echononl "\tBackup Crontab (user toot) to '$_backup_crontab_file'"
+   crontab -l > $_backup_crontab_file 2> $log_file
+   if [[ $? -eq 0 ]]; then
+      echo -e "$rc_done"
+   else
+      echo -e "$rc_failed"
+      error "Backup Crontab to '$_backup_crontab_file' failed"
+
+      # If no crontab was present, the backup file contains
+      # th string "no crontab fo root". Better to delete the
+      # backup crontab file..
+      #
+      rm -f $_backup_crontab_file
+   fi
+
+   echononl "\tRemove crontab for user root.."
+   crontab -r > $log_file 2>&1
+   if [[ $? -eq 0 ]]; then
+      echo -e "$rc_done"
+   else
+      echo -e "$rc_failed"
+      error ""
+   fi
+
+fi
+
+
+
 ## -----------------
 ## --- Stop dovecot if running
 
-echo ""
 echononl "\tStop dovecot service.."
 if ps ax 2> /dev/null | grep -q -E "/usr/local/dovecot[0-9.-]*/sbin/dovecot" > /dev/null 2>&1 ; then
    if $systemd_support ; then
@@ -665,7 +728,7 @@ else
 fi
 
 echononl "\tCompile Dovecot Sources.."
-make > ${_log_dir}/dovecot-${_version}-make.log  2>&1 || exit 1
+make > ${_log_dir}/dovecot-${_version}-make.log  2>&1 || clean_up 1
 if [ "$?" = 0 ]; then
    echo -e "$rc_done"
 else
@@ -673,7 +736,7 @@ else
    fatal Compiling dovecot failed
 fi
 echononl "\tInstall Dovecot into Folder /usr/local/dovecot-${_version}"
-make install > ${_log_dir}/dovecot-${_version}-install.log 2>&1 || exit 1
+make install > ${_log_dir}/dovecot-${_version}-install.log 2>&1 || clean_up 1
 if [ "$?" = 0 ]; then
    echo -e "$rc_done"
 else
@@ -3628,7 +3691,5 @@ If you are running dovecot on a Virtual Guest System, you have to do that on the
 Host (Root) System.
 
 "
-echo ""
 
-rm -f "$log_file"
-exit
+clean_up 0