Initial commit - forked from the corresponding Smartfront repositories.

.templates/bin/copytruncate

@@ -0,0 +1,93 @@
+#!/bin/bash
+#
+# A replacement of the logrotate's copytruncate method to use when:
+# * we haven't permission to change ownership, so the built-in copytruncate
+#   method would fail (this is a bug in logrotate, I think);
+# * we haven't permission to reload the service, so the create new log method
+#   doesn't work - the service would still write to the already rotated file.
+#
+# This script, when called as a prerotate script from logrotate configuration:
+# * copytruncates a file having $LOGEXT (see below) extesion and compresses it
+#   (and returns with 1 exit code, thus, the logrotate will skip this file).
+# * does nothing with files having any other extensions - e.g .1, .2 and so on
+#   (and returns with 0 exit code, thus, the logrotate can process this file);
+#
+# In other words, with default settings it simulates the effect of logrotate
+# configuration options below:
+#   <pathname>/*.log {
+#     dateext
+#     dateyesterday
+#     dateformat %Y-%m-%d.
+#     extension log
+#     compress
+#     copytruncate
+#     [...]
+#   }
+# but doesn't stop if failed to set the permissions during copytruncate.
+#
+# The script receives the file to process as it's first command line parameter.
+# Lack of the parameter it simply does nothing.
+#
+# Author: Kovács Zoltán <kovacs.zoltan@smartfront.hu>
+#         Kovács Zoltán <kovacsz@marcusconsulting.hu>
+# License: GNU/GPL v3+ (https://www.gnu.org/licenses/gpl-3.0.en.html)
+# 2023-06-18 v1.0
+# new: forked from the "SMARTERP_skeleton" repository.
+# 2020-11-09 v0.1 Initial release
+
+# Configurable parameters - must be consistent with the logrotate configuration.
+#
+DATESTRING="$(date "+%Y-%m-%d" -d '1 day ago')"	# Yesterday goes to the filename
+LOGEXT="log"					# Processes only *.$LOGEXT files
+
+# Messages.
+MSG_MISSINGDEP="Fatal: missing dependency"
+
+# Checks the dependencies.
+TR=$(which tr 2>/dev/null)
+if [ -z "$TR" ]; then echo "$MSG_MISSINGDEP tr."; exit 1 ; fi
+for item in basename cp dirname gzip
+do
+    if [ -n "$(which $item)" ]
+    then export $(echo $item | "$TR" '[:lower:]' '[:upper:]')=$(which $item)
+    else echo "$MSG_MISSINGDEP $item." >&2; exit 1; fi
+done
+# All dependencies are available via "$THECOMMAND" (upper case) call.
+#
+# An additional bugfix (use "$(which gzip)" instead of "$GZIP"):
+# https://www.gnu.org/software/gzip/manual/html_node/Environment.html
+GZIP=""
+
+# Lack of the parameter (unlikely) it simply does nothing.
+# The script returns an OK status, so the logrotate will continue.
+[[ -z "$1" ]] && exit 0
+# Parses the parameter.
+LOGDIR="$("$DIRNAME" $1)"
+LOGFILE="$("$BASENAME" $1)"
+NEWFILE="${LOGFILE%.*}.$DATESTRING.${LOGFILE##*.}"
+
+# If the parameter doesn't point to a writeable file it simply does nothing.
+[[ ! -w "$LOGDIR/$LOGFILE" ]] && exit 0
+# If the log's folder isn't writable it simply does nothing.
+[[ ! -w "$LOGDIR" ]] && exit 0
+# If the extension doesn't match it simply does nothing.
+[[ "${LOGFILE##*.}" != "$LOGEXT" ]] && exit 0
+# Cases above must handled by the logrotate itself.
+# The script returns an OK status, so the logrotate will continue.
+
+# Doesn't copy if it would overwrite something.
+# Returns an error status, so the logrotate won't process this file.
+[[ -e "$LOGDIR/$NEWFILE" ]]    && exit 1
+[[ -e "$LOGDIR/$NEWFILE.gz" ]] && exit 1
+# Tries to copy the current logfile.
+"$CP" -p "$LOGDIR/$LOGFILE" "$LOGDIR/$NEWFILE" # >/dev/null 2>&1
+# On error returns an error status so the logrotate won't process this file.
+[[ ! -r "$LOGDIR/$NEWFILE" ]] && exit 1
+# Done with copy. Tries to empty the current logfile. Doesn't check the result.
+: >"$LOGDIR/$LOGFILE"
+# Compresses the rotated logfile. Doesn't check the result.
+"$(which gzip)" "$LOGDIR/$NEWFILE" #>/dev/null 2>&1
+# Returns a fake error status to prevent the logrotate to process this file.
+exit 1
+
+# That's all, Folks! :)