debian/exim4-base.cron.daily

   1 #!/bin/sh
   2
   3 if [ -n "$EX4DEBUG" ]; then
   4   echo "now debugging $0 $@"
   5   set -x
   6 fi
   7
   8
   9 # set this to some other value if you don't want the panic log to be
  10 # watched by this script, for example when you're using your own log
  11 # checking mechanisms or don't care.
  12
  13 E4BCD_DAILY_REPORT_TO=""
  14 E4BCD_DAILY_REPORT_OPTIONS=""
  15 E4BCD_WATCH_PANICLOG="yes"
  16 # Number of lines of paniclog quoted in warning email.
  17 E4BCD_PANICLOG_LINES="10"
  18 E4BCD_PANICLOG_NOISE=""
  19
  20 # Only do anything if exim4 is actually installed
  21 if [ ! -x /usr/lib/exim4/exim4 ]; then
  22   exit 0
  23 fi
  24
  25 [ -f /etc/default/exim4 ] && . /etc/default/exim4
  26
  27 SPOOLDIR="$(exim4 -bP spool_directory | sed 's/.*=[[:space:]]\(.*\)/\1/')"
  28
  29 # The log processing code used in this cron script is not very
  30 # sophisticated. It relies on this cron job being executed earlier than
  31 # the log rotation job, and will have false results if the log is not
  32 # rotated exactly once daily in the daily cron processing. Even in the
  33 # default configuration, it will ignore log entries made between this
  34 # cron job and the log rotation job.
  35
  36 # Patches for more sophisticated processing are appreciated via the
  37 # Debian BTS.
  38
  39 E4BCD_MAINLOG_NOISE="^[[:digit:][:space:]:-]\{20\}\(\(Start\|End\) queue run: pid=[[:digit:]]\+\|exim [[:digit:]\.]\+ daemon started: pid=[[:digit:]]\+, .*\)$"
  40
  41 if [ -n "$E4BCD_DAILY_REPORT_TO" ]; then
  42   if [ -x "$(command -v eximstats)" ] && [ -x "$(command -v mail)" ]; then
  43     if [ "$(< /var/log/exim4/mainlog grep -v "$E4BCD_MAINLOG_NOISE" | wc -l)" -gt "0" ]; then
  44       < /var/log/exim4/mainlog grep -v "$E4BCD_MAINLOG_NOISE" \
  45                 | eximstats $E4BCD_DAILY_REPORT_OPTIONS \
  46                 | mail -s"$(hostname --fqdn) Daily e-mail activity report" \
  47                     $E4BCD_DAILY_REPORT_TO
  48     else
  49       echo "no mail activity in this interval" \
  50                 | mail -s"$(hostname --fqdn) Daily e-mail activity report" \
  51                     $E4BCD_DAILY_REPORT_TO
  52     fi
  53   else
  54     echo "The exim4 cron job is configured to send a daily report, but eximstats"
  55     echo "and/or mail cannot be found. Please check and make sure that these two"
  56     echo "binaries are available"
  57   fi
  58 fi
  59
  60 log_this() {
  61   TEXT="$@"
  62   if ! logger -t exim4 -p mail.alert $TEXT; then
  63     RET="$?"
  64     echo >&2 "ALERT: could not syslog $TEXT, logger return value $RET"
  65   fi
  66 }
  67
  68 if [ "$E4BCD_WATCH_PANICLOG" != "no" ]; then
  69   if [ -s "/var/log/exim4/paniclog" ]; then
  70     if [ -x "/usr/local/lib/exim4/nonzero_paniclog_hook" ]; then
  71       /usr/local/lib/exim4/nonzero_paniclog_hook
  72     fi
  73     if [ -z "$E4BCD_PANICLOG_NOISE" ] || grep -vq "$E4BCD_PANICLOG_NOISE" /var/log/exim4/paniclog; then
  74       log_this "ALERT: exim paniclog /var/log/exim4/paniclog has non-zero size, mail system possibly broken"
  75       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 ${E4BCD_PANICLOG_LINES} lines are quoted below.\n\n%s\n" \
  76       "$(hostname --fqdn)" "$(hostname --fqdn)" \
  77       "$(tail -n "${E4BCD_PANICLOG_LINES}" /var/log/exim4/paniclog)" \
  78       | exim4 root; then
  79         log_this "PANIC: sending out e-mail warning has failed, exim has non-zero return code"
  80       fi
  81       if [ "$E4BCD_WATCH_PANICLOG" = "once" ]; then
  82         logrotate -f /etc/logrotate.d/exim4-paniclog
  83       fi
  84     fi
  85   fi
  86 fi
  87
  88 # run tidydb as Debian-exim:Debian-exim.
  89 if [ -x /usr/sbin/exim_tidydb ]; then
  90   cd $SPOOLDIR/db || exit 1
  91   if ! find $SPOOLDIR/db -maxdepth 1 -name '*.lockfile' -or -name 'log.*' \
  92     -or -type f -printf '%f\0' | \
  93       xargs -0r -n 1 \
  94       start-stop-daemon --start --exec /usr/sbin/exim_tidydb \
  95       --chuid Debian-exim:Debian-exim -- $SPOOLDIR > /dev/null; then
  96     # if we reach this, invoking exim_tidydb from start-stop-daemon has
  97     # failed, most probably because of libpam-tmpdir being in use
  98     # (see #373786 and #376165)
  99     find $SPOOLDIR/db -maxdepth 1 -name '*.lockfile' -or -name 'log.*' \
 100     -or -type f -printf '%f\0' | \
 101     runuser --shell=/bin/bash \
 102          --command="xargs -0r -n 1 /usr/sbin/exim_tidydb $SPOOLDIR > /dev/null" \
 103          Debian-exim
 104   fi
 105 fi