| 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 |