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# $Cambridge: exim/src/src/exicyclog.src,v 1.11 2009/11/16 19:50:36 nm4 Exp $
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# Copyright (c) University of Cambridge, 1995 - 2007
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# See the file NOTICE for conditions of use and distribution.
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# This script takes the following command line arguments:
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# -l dir Log file directory
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# -k days Number of days to keep the log files
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# Except when they appear in comments, the following placeholders in this
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# source are replaced when it is turned into a runnable script:
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# CONFIGURE_FILE_USE_NODE
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# CONFIGURE_FILE_USE_EUID
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# This is a shell script for cycling exim main and reject log files. Each time
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# it is run, the files get "shuffled down" by one, the current one (e.g.
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# mainlog) becoming mainlog.01, the previous mainlog.01 becoming mainlog.02,
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# and so on, up to the limit configured here. When the number to keep is
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# greater than 99 (not common, but some people do it), three digits are used
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# (e.g. mainlog.001). The same shuffling happens to the reject logs. All
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# renamed files with numbers greater than 1 are compressed.
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# This script should be called regularly (e.g. daily) by a root crontab
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# 1 0 * * * /opt/exim/bin/exicyclog
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# The following lines are generated from Exim's configuration file when
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# this source is built into a script, but you can subsequently edit them
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# without rebuilding things, as long are you are careful not to overwrite
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# the script in the next Exim rebuild/install. "Keep" is the number of old log
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# files that are required to be kept. Its value can be overridden by the -k
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# command line option. "Compress" and "suffix" define your chosen compression
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# method. The others are provided because the location of certain commands
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# varies from OS to OS. Sigh.
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compress=COMPRESS_COMMAND
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suffix=COMPRESS_SUFFIX
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# End of editable lines
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#########################################################################
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# Sort out command line options.
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while [ $# -gt 0 ] ; do
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*) echo "** exicyclog: unknown option $1"
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# Some operating systems have different versions in which the commands live
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# in different places. We have a fudge that will search the usual suspects if
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for cmd in chgrp chmod chown mv rm touch; do
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if [ "$oldcmd" != "look_for_it" ] ; then continue ; fi
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for dir in /bin /usr/bin /usr/sbin /usr/etc ; do
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if [ -f $dir/$cmd ] ; then
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# See if this installation is using the esoteric "USE_EUID" feature of Exim,
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# in which it uses the effective user id as a suffix for the configuration file
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# name. In order for this to work, exicyclog must be run under the appropriate
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if [ "CONFIGURE_FILE_USE_EUID" = "yes" ]; then
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# See if this installation is using the esoteric "USE_NODE" feature of Exim,
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# in which it uses the host's name as a suffix for the configuration file name.
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if [ "CONFIGURE_FILE_USE_NODE" = "yes" ]; then
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hostsuffix=.`uname -n`
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# Now find the configuration file name. This has got complicated because the
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# CONFIGURE_FILE value may now be a list of files. The one that is used is the
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# first one that exists. Mimic the code in readconf.c by testing first for the
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# suffixed file in each case.
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set `awk -F: '{ for (i = 1; i <= NF; i++) print $i }' <<End
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while [ "$config" = "" -a $# -gt 0 ] ; do
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if [ -f "$1$euid$hostsuffix" ] ; then
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config="$1$euid$hostsuffix"
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elif [ -f "$1$euid" ] ; then
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elif [ -f "$1$hostsuffix" ] ; then
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config="$1$hostsuffix"
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elif [ -f "$1" ] ; then
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# Determine if the log file path is set, and where the spool directory is.
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# Search for an exim_path setting in the configure file; otherwise use the bin
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# directory. Call that version of Exim to find the spool directory and log file
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# path, unless log_file_path was set above by a command line option. BEWARE: a
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# tab character is needed in the command below. It has had a nasty tendency to
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# get lost in the past. Use a variable to hold a space and a tab to keep the
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exim_path=`grep "^[$st]*exim_path" $config | sed "s/.*=[$st]*//"`
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if test "$exim_path" = ""; then exim_path=BIN_DIRECTORY/exim4; fi
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spool_directory=`$exim_path -C $config -bP spool_directory | sed 's/.*=[ ]*//'`
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if [ "$log_file_path" = "" ] ; then
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log_file_path=`$exim_path -C $config -bP log_file_path | sed 's/.*=[ ]*//'`
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# If log_file_path contains only "syslog" then no Exim log files are in use.
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# We can't cycle anything. Complain and give up.
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if [ "$log_file_path" = "syslog" ] ; then
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echo "*** Exim is logging to syslog - no log files to cycle ***"
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# Otherwise, remove ":syslog" or "syslog:" (some spaces allowed) and inspect
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# what remains. The simplistic regex originally used failed when a filename
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# contained "syslog", so we have to use three less general ones, because sed
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# doesn't have much power in its regexs.
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log_file_path=`echo "$log_file_path" | \
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sed 's/^ *:\{0,1\} *syslog *:\{0,1\} *//;s/: *syslog *:/:/;s/: *syslog *$//'`
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# If log_file_path is empty, try and get the compiled in default by using
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# /dev/null as the configuration file.
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if [ "$log_file_path" = "" ]; then
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log_file_path=`$exim_path -C /dev/null -bP log_file_path | sed 's/.*=[ ]*//'`
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log_file_path=`echo "$log_file_path" | \
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sed 's/^ *:\{0,1\} *syslog *:\{0,1\} *//;s/: *syslog *:/:/;s/: *syslog *$//'`
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# If log_file_path is still empty, the logs we are interested in are probably
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# called "mainlog" and "rejectlog" in the directory called "log" in the spool
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# directory. Otherwise we fish out the directory from the given path, and also
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# the names of the logs.
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if [ "$log_file_path" = "" ]; then
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logdir=$spool_directory/log
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logdir=`echo $log_file_path | sed 's?/[^/]*$??'`
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logbase=`echo $log_file_path | sed 's?^.*/??'`
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mainlog=`echo $logbase | sed 's/%s/main/'`
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rejectlog=`echo $logbase | sed 's/%s/reject/'`
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paniclog=`echo $logbase | sed 's/%s/panic/'`
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# Get into the log directory to do the business.
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# If there is no main log file, do nothing.
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if [ ! -f $mainlog ]; then exit; fi
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# Find out the owner and group of the main log file so that we can re-instate
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# this on moved and compressed files, since some operating systems may change
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# things. This is a tedious bit of code, but it should work both in operating
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# systems where the -l option of ls gives the user and group, and those in which
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# you need -lg. The condition is that, if the fifth field of the output from
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# ls consists entirely of digits, then the third and fourth fields are the user
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# These statements work fine in the Bourne or Korn shells, but not in Bash.
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# So for the benefit of systems whose /bin/sh is really Bash, they have been
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# changed to a messier form.
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# user=`echo "$a\n$b\n" | awk 'BEGIN { OFS=""} { if ($5 ~ /^[0-9]+$/) print $3; }'`
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# group=`echo "$a\n$b\n" | awk 'BEGIN { OFS=""} { if ($5 ~ /^[0-9]+$/) print $4; }'`
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" | awk 'BEGIN { OFS=""} { if ($5 ~ /^[0-9]+$/) { print $3; exit; } }'`
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" | awk 'BEGIN { OFS=""} { if ($5 ~ /^[0-9]+$/) { print $4; exit; } }'`
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# Now do the job. First remove the files that have "fallen off the bottom".
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# Look for both the compressed and uncompressed forms.
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if [ $keep -lt 10 ]; then keept=0$keep; else keept=$keep; fi;
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if [ -f $mainlog.$keept ]; then $rm $mainlog.$keept; fi;
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if [ -f $mainlog.$keept.$suffix ]; then $rm $mainlog.$keept.$suffix; fi;
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if [ -f $rejectlog.$keept ]; then $rm $rejectlog.$keept; fi;
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if [ -f $rejectlog.$keept.$suffix ]; then $rm $rejectlog.$keept.$suffix; fi;
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if [ -f $paniclog.$keept ]; then $rm $paniclog.$keept; fi;
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if [ -f $paniclog.$keept.$suffix ]; then $rm $paniclog.$keept.$suffix; fi;
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# Now rename all the previous old files by increasing their numbers by 1.
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# When the number is less than 10, insert a leading zero.
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if [ $count -lt 10 ]; then countt=0$count; else countt=$count; fi
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while [ $count -gt 1 ]; do
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old=`expr -- $count - 1`
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if [ $keep -gt 99 ]; then
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if [ $old -lt 10 ]; then oldt=00$old
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elif [ $old -lt 100 ]; then oldt=0$old
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if [ $old -lt 10 ]; then oldt=0$old; else oldt=$old; fi;
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if [ -f $mainlog.$oldt ]; then
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$mv $mainlog.$oldt $mainlog.$countt
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elif [ -f $mainlog.$oldt.$suffix ]; then
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$mv $mainlog.$oldt.$suffix $mainlog.$countt.$suffix
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if [ -f $rejectlog.$oldt ]; then
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$mv $rejectlog.$oldt $rejectlog.$countt
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elif [ -f $rejectlog.$oldt.$suffix ]; then
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$mv $rejectlog.$oldt.$suffix $rejectlog.$countt.$suffix
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if [ -f $paniclog.$oldt ]; then
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$mv $paniclog.$oldt $paniclog.$countt
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elif [ -f $paniclog.$oldt.$suffix ]; then
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$mv $paniclog.$oldt.$suffix $paniclog.$countt.$suffix
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# Now rename the current files as 01 or 001 if keeping more than 99
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if [ $keep -gt 99 ]; then first=001; else first=01; fi
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if [ -f $mainlog ]; then
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$mv $mainlog $mainlog.$first
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$chown $user:$group $mainlog.$first
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$chown $user:$group $mainlog
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if [ -f $rejectlog ]; then
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$mv $rejectlog $rejectlog.$first
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$chown $user:$group $rejectlog.$first
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$chown $user:$group $rejectlog
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$chmod 640 $rejectlog
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if [ -f $paniclog ]; then
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$mv $paniclog $paniclog.$first
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$chown $user:$group $paniclog.$first
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$chown $user:$group $paniclog
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# Now scan the (0)02 and later files, compressing where necessary, and
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# ensuring that their owners and groups are correct.
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while [ $count -le $keep ]; do
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if [ $keep -gt 99 ]; then
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if [ $count -lt 10 ]; then countt=00$count
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elif [ $count -lt 100 ]; then countt=0$count
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if [ $count -lt 10 ]; then countt=0$count; else countt=$count; fi
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if [ -f $mainlog.$countt ]; then $compress $mainlog.$countt; fi
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if [ -f $mainlog.$countt.$suffix ]; then
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$chown $user:$group $mainlog.$countt.$suffix
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if [ -f $rejectlog.$countt ]; then $compress $rejectlog.$countt; fi
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if [ -f $rejectlog.$countt.$suffix ]; then
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$chown $user:$group $rejectlog.$countt.$suffix
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if [ -f $paniclog.$countt ]; then $compress $paniclog.$countt; fi
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if [ -f $paniclog.$countt.$suffix ]; then
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$chown $user:$group $paniclog.$countt.$suffix
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count=`expr -- $count + 1`
added
removed
.pc/67_unnecessaryCopt.diff/src/exicyclog.src
