scripts: housekeeping & cleanup setup (2/2) (#3123)

target/scripts/startup/setup.d/fetchmail.sh

@@ -2,87 +2,94 @@
 
 function _setup_fetchmail
 {
-  _log 'trace' 'Preparing Fetchmail configuration'
-
-  local CONFIGURATION FETCHMAILRC
-
-  CONFIGURATION='/tmp/docker-mailserver/fetchmail.cf'
-  FETCHMAILRC='/etc/fetchmailrc'
-
-  if [[ -f ${CONFIGURATION} ]]
+  if [[ ${ENABLE_FETCHMAIL} -eq 1 ]]
   then
-    cat /etc/fetchmailrc_general "${CONFIGURATION}" >"${FETCHMAILRC}"
-  else
-    cat /etc/fetchmailrc_general >"${FETCHMAILRC}"
-  fi
+    _log 'trace' 'Enabling and configuring Fetchmail'
 
-  chmod 700 "${FETCHMAILRC}"
-  chown fetchmail:root "${FETCHMAILRC}"
+    local CONFIGURATION FETCHMAILRC
+
+    CONFIGURATION='/tmp/docker-mailserver/fetchmail.cf'
+    FETCHMAILRC='/etc/fetchmailrc'
+
+    if [[ -f ${CONFIGURATION} ]]
+    then
+      cat /etc/fetchmailrc_general "${CONFIGURATION}" >"${FETCHMAILRC}"
+    else
+      cat /etc/fetchmailrc_general >"${FETCHMAILRC}"
+    fi
+
+    chmod 700 "${FETCHMAILRC}"
+    chown fetchmail:root "${FETCHMAILRC}"
+  else
+    _log 'debug' 'Fetchmail is disabled'
+  fi
 }
 
 function _setup_fetchmail_parallel
 {
-  _log 'trace' 'Setting up Fetchmail parallel'
-  mkdir /etc/fetchmailrc.d/
+  if [[ ${FETCHMAIL_PARALLEL} -eq 1 ]]
+  then
+    _log 'trace' 'Enabling and configuring Fetchmail parallel'
+    mkdir /etc/fetchmailrc.d/
 
-  # Split the content of /etc/fetchmailrc into
-  # smaller fetchmailrc files per server [poll] entries. Each
-  # separate fetchmailrc file is stored in /etc/fetchmailrc.d
-  #
-  # The sole purpose for this is to work around what is known
-  # as the Fetchmail IMAP idle issue.
-  function _fetchmailrc_split
-  {
-    local FETCHMAILRC='/etc/fetchmailrc'
-    local FETCHMAILRCD='/etc/fetchmailrc.d'
-    local DEFAULT_FILE="${FETCHMAILRCD}/defaults"
+    # Split the content of /etc/fetchmailrc into
+    # smaller fetchmailrc files per server [poll] entries. Each
+    # separate fetchmailrc file is stored in /etc/fetchmailrc.d
+    #
+    # The sole purpose for this is to work around what is known
+    # as the Fetchmail IMAP idle issue.
+    function _fetchmailrc_split
+    {
+      local FETCHMAILRC='/etc/fetchmailrc'
+      local FETCHMAILRCD='/etc/fetchmailrc.d'
+      local DEFAULT_FILE="${FETCHMAILRCD}/defaults"
 
-    if [[ ! -r ${FETCHMAILRC} ]]
-    then
-      _log 'warn' "File '${FETCHMAILRC}' not found"
-      return 1
-    fi
-
-    if [[ ! -d ${FETCHMAILRCD} ]]
-    then
-      if ! mkdir "${FETCHMAILRCD}"
+      if [[ ! -r ${FETCHMAILRC} ]]
       then
-        _log 'warn' "Unable to create folder '${FETCHMAILRCD}'"
+        _log 'warn' "File '${FETCHMAILRC}' not found"
         return 1
       fi
-    fi
 
-    local COUNTER=0 SERVER=0
-    while read -r LINE
-    do
-      if [[ ${LINE} =~ poll ]]
+      if [[ ! -d ${FETCHMAILRCD} ]]
       then
-        # If we read "poll" then we reached a new server definition
-        # We need to create a new file with fetchmail defaults from
-        # /etc/fetcmailrc
-        COUNTER=$(( COUNTER + 1 ))
-        SERVER=1
-        cat "${DEFAULT_FILE}" >"${FETCHMAILRCD}/fetchmail-${COUNTER}.rc"
-        echo "${LINE}" >>"${FETCHMAILRCD}/fetchmail-${COUNTER}.rc"
-      elif [[ ${SERVER} -eq 0 ]]
-      then
-        # We have not yet found "poll". Let's assume we are still reading
-        # the default settings from /etc/fetchmailrc file
-        echo "${LINE}" >>"${DEFAULT_FILE}"
-      else
-        # Just the server settings that need to be added to the specific rc.d file
-        echo "${LINE}" >>"${FETCHMAILRCD}/fetchmail-${COUNTER}.rc"
+        if ! mkdir "${FETCHMAILRCD}"
+        then
+          _log 'warn' "Unable to create folder '${FETCHMAILRCD}'"
+          return 1
+        fi
       fi
-    done < <(_get_valid_lines_from_file "${FETCHMAILRC}")
 
-    rm "${DEFAULT_FILE}"
-  }
+      local COUNTER=0 SERVER=0
+      while read -r LINE
+      do
+        if [[ ${LINE} =~ poll ]]
+        then
+          # If we read "poll" then we reached a new server definition
+          # We need to create a new file with fetchmail defaults from
+          # /etc/fetcmailrc
+          COUNTER=$(( COUNTER + 1 ))
+          SERVER=1
+          cat "${DEFAULT_FILE}" >"${FETCHMAILRCD}/fetchmail-${COUNTER}.rc"
+          echo "${LINE}" >>"${FETCHMAILRCD}/fetchmail-${COUNTER}.rc"
+        elif [[ ${SERVER} -eq 0 ]]
+        then
+          # We have not yet found "poll". Let's assume we are still reading
+          # the default settings from /etc/fetchmailrc file
+          echo "${LINE}" >>"${DEFAULT_FILE}"
+        else
+          # Just the server settings that need to be added to the specific rc.d file
+          echo "${LINE}" >>"${FETCHMAILRCD}/fetchmail-${COUNTER}.rc"
+        fi
+      done < <(_get_valid_lines_from_file "${FETCHMAILRC}")
 
-  _fetchmailrc_split
+      rm "${DEFAULT_FILE}"
+    }
 
-  local COUNTER=0
-  for RC in /etc/fetchmailrc.d/fetchmail-*.rc
-  do
+    _fetchmailrc_split
+
+    local COUNTER=0
+    for RC in /etc/fetchmailrc.d/fetchmail-*.rc
+    do
     COUNTER=$(( COUNTER + 1 ))
     cat >"/etc/supervisor/conf.d/fetchmail-${COUNTER}.conf" << EOF
 [program:fetchmail-${COUNTER}]
@@ -94,10 +101,13 @@ stderr_logfile=/var/log/supervisor/%(program_name)s.log
 user=fetchmail
 command=/usr/bin/fetchmail -f ${RC} -v --nodetach --daemon %(ENV_FETCHMAIL_POLL)s -i /var/lib/fetchmail/.fetchmail-UIDL-cache --pidfile /var/run/fetchmail/%(program_name)s.pid
 EOF
-    chmod 700 "${RC}"
-    chown fetchmail:root "${RC}"
-  done
+      chmod 700 "${RC}"
+      chown fetchmail:root "${RC}"
+    done
 
-  supervisorctl reread
-  supervisorctl update
+    supervisorctl reread
+    supervisorctl update
+  else
+    _log 'debug' 'Fetchmail parallel is disabled'
+  fi
 }