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de45f55a AM |
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' | \ | |
01e60269 AM |
101 | runuser --shell=/bin/bash \ |
102 | --command="xargs -0r -n 1 /usr/sbin/exim_tidydb $SPOOLDIR > /dev/null" \ | |
de45f55a AM |
103 | Debian-exim |
104 | fi | |
105 | fi |