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106 lines
4.0 KiB
Bash
106 lines
4.0 KiB
Bash
#!/bin/sh
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if [ -n "$EX4DEBUG" ]; then
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echo "now debugging $0 $@"
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set -x
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fi
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# set this to some other value if you don't want the panic log to be
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# watched by this script, for example when you're using your own log
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# checking mechanisms or don't care.
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E4BCD_DAILY_REPORT_TO=""
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E4BCD_DAILY_REPORT_OPTIONS=""
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E4BCD_WATCH_PANICLOG="yes"
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# Number of lines of paniclog quoted in warning email.
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E4BCD_PANICLOG_LINES="10"
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E4BCD_PANICLOG_NOISE=""
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# Only do anything if exim4 is actually installed
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if [ ! -x /usr/lib/exim4/exim4 ]; then
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exit 0
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fi
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[ -f /etc/default/exim4 ] && . /etc/default/exim4
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SPOOLDIR="$(exim4 -bP spool_directory | sed 's/.*=[[:space:]]\(.*\)/\1/')"
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# The log processing code used in this cron script is not very
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# sophisticated. It relies on this cron job being executed earlier than
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# the log rotation job, and will have false results if the log is not
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# rotated exactly once daily in the daily cron processing. Even in the
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# default configuration, it will ignore log entries made between this
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# cron job and the log rotation job.
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# Patches for more sophisticated processing are appreciated via the
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# Debian BTS.
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E4BCD_MAINLOG_NOISE="^[[:digit:][:space:]:-]\{20\}\(\(Start\|End\) queue run: pid=[[:digit:]]\+\|exim [[:digit:]\.]\+ daemon started: pid=[[:digit:]]\+, .*\)$"
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if [ -n "$E4BCD_DAILY_REPORT_TO" ]; then
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if [ -x "$(command -v eximstats)" ] && [ -x "$(command -v mail)" ]; then
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if [ "$(< /var/log/exim4/mainlog grep -v "$E4BCD_MAINLOG_NOISE" | wc -l)" -gt "0" ]; then
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< /var/log/exim4/mainlog grep -v "$E4BCD_MAINLOG_NOISE" \
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| eximstats $E4BCD_DAILY_REPORT_OPTIONS \
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| mail -s"$(hostname --fqdn) Daily e-mail activity report" \
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$E4BCD_DAILY_REPORT_TO
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else
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echo "no mail activity in this interval" \
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| mail -s"$(hostname --fqdn) Daily e-mail activity report" \
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$E4BCD_DAILY_REPORT_TO
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fi
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else
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echo "The exim4 cron job is configured to send a daily report, but eximstats"
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echo "and/or mail cannot be found. Please check and make sure that these two"
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echo "binaries are available"
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fi
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fi
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log_this() {
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TEXT="$@"
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if ! logger -t exim4 -p mail.alert $TEXT; then
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RET="$?"
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echo >&2 "ALERT: could not syslog $TEXT, logger return value $RET"
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fi
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}
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if [ "$E4BCD_WATCH_PANICLOG" != "no" ]; then
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if [ -s "/var/log/exim4/paniclog" ]; then
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if [ -x "/usr/local/lib/exim4/nonzero_paniclog_hook" ]; then
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/usr/local/lib/exim4/nonzero_paniclog_hook
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fi
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if [ -z "$E4BCD_PANICLOG_NOISE" ] || grep -vq "$E4BCD_PANICLOG_NOISE" /var/log/exim4/paniclog; then
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log_this "ALERT: exim paniclog /var/log/exim4/paniclog has non-zero size, mail system possibly broken"
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if ! printf "Subject: exim paniclog on %s has non-zero size\nTo: root\n\nexim paniclog /var/log/exim4/paniclog on %s has non-zero size, mail system might be broken. The last ${E4BCD_PANICLOG_LINES} lines are quoted below.\n\n%s\n" \
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"$(hostname --fqdn)" "$(hostname --fqdn)" \
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"$(tail -n "${E4BCD_PANICLOG_LINES}" /var/log/exim4/paniclog)" \
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| exim4 root; then
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log_this "PANIC: sending out e-mail warning has failed, exim has non-zero return code"
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fi
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if [ "$E4BCD_WATCH_PANICLOG" = "once" ]; then
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logrotate -f /etc/logrotate.d/exim4-paniclog
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fi
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fi
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fi
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fi
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# run tidydb as Debian-exim:Debian-exim.
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if [ -x /usr/sbin/exim_tidydb ]; then
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cd $SPOOLDIR/db || exit 1
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if ! find $SPOOLDIR/db -maxdepth 1 -name '*.lockfile' -or -name 'log.*' \
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-or -type f -printf '%f\0' | \
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xargs -0r -n 1 \
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start-stop-daemon --start --exec /usr/sbin/exim_tidydb \
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--chuid Debian-exim:Debian-exim -- $SPOOLDIR > /dev/null; then
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# if we reach this, invoking exim_tidydb from start-stop-daemon has
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# failed, most probably because of libpam-tmpdir being in use
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# (see #373786 and #376165)
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find $SPOOLDIR/db -maxdepth 1 -name '*.lockfile' -or -name 'log.*' \
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-or -type f -printf '%f\0' | \
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runuser --shell=/bin/bash \
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--command="xargs -0r -n 1 /usr/sbin/exim_tidydb $SPOOLDIR > /dev/null" \
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Debian-exim
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fi
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fi
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