New sequence for encrypted backups supporting profiles using duplicity

seqs/ebackup.cfg.example

@@ -1,11 +1,5 @@
 #!/bin/bash
 
-# How often the backup job should be run
-# Default is to run every day at 02:01 am
-# (see man 5 crontab for syntax help)
-# m h  dom mon dow
-#EBU_CRONTIME='1 2 * * *'
-
 # Passphrase for symmetrical(default) or asymmetrical encryption
 EBU_PASSPHRASE=
 
@@ -22,6 +16,21 @@ EBU_TARGET=
 # base directory to backup
 EBU_SOURCE=
 
+# a command that runs duplicity e.g. 
+#  shape bandwidth use via trickle
+#  "trickle -s -u 640 -d 5120" # 5Mb up, 40Mb down"
+#EBU_PRECMD=""
+
+# How often the backup job should be run
+# Default is to run every day at 02:01 am
+# (see man 5 crontab for syntax help)
+# m h  dom mon dow
+#EBU_CRONTIME='1 2 * * *'
+
+# Uncomment to save the output of the cron run to a logfile
+# log file name will be "encBackup_profilename.log" 
+#EBU_LOG_DIR='/var/log'
+
 #
 ## Age options
 

seqs/ebackup.sh

@@ -1,9 +1,10 @@
 #!/bin/bash
 
 toolName=duplicity
+toolBin=
 toolPpa="ppa:duplicity-team/duplicity-release-git"
 toolCronDir="/etc/cron.d"
-toolCronPrefix="encBackup_"
+toolPrefix="encBackup_"
 
 # Get script working directory
 # (when called from a different directory)
@@ -35,7 +36,6 @@ step_1_info() {
 }
 step_1_alias() { ALIAS="backup"; }
 step_1() {
-  checkInstalled
   shift
   
   local arg
@@ -70,8 +70,9 @@ step_1() {
     dupArgs+="--full-if-older-than=$EBU_MAX_FULLBKP_AGE "
   fi
 
+  checkInstalled
   setPassphrase 
-  exe $toolName $dupCommand $dupArgs "$EBU_SOURCE" "$EBU_TARGET"
+  exe $toolBin $dupCommand $dupArgs "$EBU_SOURCE" "$EBU_TARGET"
   unsetPassphrase
 
   if [ $purgeAfter -ne 0 ] ; then
@@ -79,7 +80,7 @@ step_1() {
   fi
 }
 
-step_3_info() { echo "Restore [TARGET]"; }
+step_3_info() { echo "Restore <LOCAL TARGET> [TARGET]"; }
 step_3_alias() { ALIAS="restore"; }
 step_3() {
   shift
@@ -87,10 +88,15 @@ step_3() {
     echoerr " [E] No target provided"
     return -1
   fi
-  local ebuTarget="$1"
+  local ebuLocalTarget="$1"
+  local ebuTarget="$EBU_TARGET"
+  if [ ! -z "$2" ] ; then
+    ebuTarget="$2"
+  fi
 
+  checkInstalled
   setPassphrase 
-  exe $toolName restore "$EBU_TARGET" "$ebuTarget"
+  exe $toolBin restore "$EBU_TARGET" "$ebuLocalTarget"
   unsetPassphrase
 }
 
@@ -109,14 +115,15 @@ step_5() {
   elif [ ! -z "$EBU_MAX_FULL_BACKUPS" ] ; then 
     dupCommand+="remove-all-but-n-full $EBU_MAX_FULL_BACKUPS "
   elif [ ! -z "$EBU_MAX_FULLS_WITH_INCRS" ] ; then 
-    dupCommand+="remove-all-but-n-full $EBU_MAX_FULLS_WITH_INCRS "
+    dupCommand+="remove-all-inc-of-but-n-full $EBU_MAX_FULLS_WITH_INCRS "
   else
-    echoerr " [E] No purge option configured"
+    if [ $QUIET -eq 0 ] ; then echoerr " [W] No purge option configured" ; fi
     return -1
   fi
 
+  checkInstalled
   setPassphrase 
-  exe $toolName $dupCommand --force "$ebuTarget"
+  exe $toolBin $dupCommand --force "$ebuTarget"
   unsetPassphrase
 }
 
@@ -129,10 +136,11 @@ step_20() {
     ebuTarget="$1"
   fi
  
-  exe $toolName collection-status "$ebuTarget"
+  checkInstalled
+  exe $toolBin collection-status "$ebuTarget"
 }
 
-step_22_info() { echo "List backup files [BACKUP TARGET]"; }
+step_22_info() { echo "List backup files [TARGET]"; }
 step_22_alias() { ALIAS='list'; }
 step_22() {
   shift
@@ -141,26 +149,53 @@ step_22() {
     ebuTarget="$1"
   fi
  
-  exe $toolName list-current-files "$ebuTarget"
+  checkInstalled
+  exe $toolBin list-current-files "$ebuTarget"
 }
   
 
 step_70_info() { 
   echo -n "Manage cron file for "
   if [ $CONTEXT_HELP -ne 0 ] ; then
-    echo "selected profile"
+    echo -n "selected profile"
   else
-    echo "profile: $SEQ_PROFILE_NAME"
+    echo -n "profile: $SEQ_PROFILE_NAME"
   fi
+  echo " [OPTIONS]"
+  echoinfo " [OPTIONS]"
+  echoinfo "   --remove, -r : remove cron file"
 }
 step_70_alias() { ALIAS='cron'; }
 step_70() {
-  local cronScript="$toolCronDir/${toolCronPrefix}$SEQ_PROFILE_NAME"
+  shift
-  local cronEntry="$EBU_CRONTIME $(whoami) $WDIR/$(basename -- $0) -qq -p $SEQ_PROFILE_NAME >>/dev/null"
+  local arg
-  if [ -z "$EBU_CRONTIME" ] ; then
+  local cronRemove=0
+  local cronScript="$toolCronDir/${toolPrefix}$SEQ_PROFILE_NAME"
+  local cronLog='>/dev/null'
+  local cronEntry="$EBU_CRONTIME $(whoami) $WDIR/$(basename -- $0) -qq -p $SEQ_PROFILE_NAME"
+  
+  for arg in "$@" ; do
+    case "$1" in
+      --remove|-r)
+        cronRemove=1
+        shift
+        ;;
+    esac
+  done
+
+  if [ ! -z "$EBU_LOG_DIR" ] ; then
+    cronLog="$EBU_LOG_DIR/${toolPrefix}${SEQ_PROFILE_NAME}.log"
+    exe touch "$cronLog"
+    exe chmod 600 "$cronLog"
+  fi
+  
+  cronEntry+=" >$cronLog"
+  
+  if [ -z "$EBU_CRONTIME" ] || [ $cronRemove -ne 0 ] ; then
+    echo " [I] Removing cron for profile $SEQ_PROFILE_NAME"
     exe rm -r "$cronScript"
   else
-    checkFileHead "$cronScript" "$EBU_CRONTIME"
+    checkFileHead "$cronScript" "$cronEntry"
     if [ $? -ne 0 ] ; then
       echo " [I] Update cron for profile $SEQ_PROFILE_NAME"
       exep "sudo echo \"$cronEntry\" > \"$cronScript\""
@@ -221,10 +256,13 @@ checkFileHead() {
 }
 
 checkInstalled() {
+  if [ -z "$toolBin" ] ; then
     command -v $toolName >>/dev/null
     if [ $? -ne 0 ] ; then
       step install
     fi
+    toolBin="$EBU_PRECMD $(command -v $toolName)"
+  fi 
 }
 
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