5 BEGIN { pop @INC if $INC[-1] eq '.' };
10 # Copyright (c) 2007-2015 University of Cambridge.
11 # See the file NOTICE for conditions of use and distribution.
13 # Except when they appear in comments, the following placeholders in this
14 # source are replaced when it is turned into a runnable script:
22 # This is a perl script which extracts from an Exim log all entries
23 # for all messages that have an entry that matches a given pattern.
24 # If *any* entry for a particular message matches the pattern, *all*
25 # entries for that message are displayed.
27 # We buffer up information on a per-message basis. It is done this way rather
28 # than reading the input twice so that the input can be a pipe.
30 # There must be one argument, which is the pattern. Subsequent arguments
31 # are the files to scan; if none, the standard input is read. If any file
32 # appears to be compressed, it is passed through zcat. We can't just do this
33 # for all files, because zcat chokes on non-compressed files.
35 # Performance optimized in 02/02/2007 by Jori Hamalainen
36 # Typical run time acceleration: 4 times
42 # This subroutine converts a time/date string from an Exim log line into
43 # the number of seconds since the epoch. It handles optional timezone
47 my($year,$month,$day,$hour,$min,$sec,$tzs,$tzh,$tzm) =
48 $_[0] =~ /^(\d{4})-(\d\d)-(\d\d)\s(\d\d):(\d\d):(\d\d)(?:.\d+)?(?>\s([+-])(\d\d)(\d\d))?/o;
50 my $seconds = mktime $sec, $min, $hour, $day, $month - 1, $year - 1900;
54 $seconds -= $tzh * 3600 + $tzm * 60 if $tzs eq "+";
55 $seconds += $tzh * 3600 + $tzm * 60 if $tzs eq "-";
62 # This subroutine processes a single line (in $_) from a log file. Program
63 # defensively against short lines finding their way into the log.
65 my (%saved, %id_list, $pattern);
75 # If using "related" option, have to track extra message IDs
81 # Convert syslog lines to mainlog format, as in eximstats.
83 if (!/^\d{4}-/o) { $_ =~ s/^.*? exim\b.*?: //o; }
86 my($date,$id) = /^(\d{4}-\d\d-\d\d \d\d:\d\d:\d\d(?:\.\d+)? (?:[+-]\d{4} )?)(?:\[\d+\] )?(\w{6}\-\w{6}\-\w{2})?/o;
88 # Handle the case when the log line belongs to a specific message. We save
89 # lines for specific messages until the message is complete. Then either print
94 $saved{$id} = '' unless defined($saved{$id});
96 # Save up the data for this message in case it becomes interesting later.
100 # Are we interested in this id ? Short circuit if we already were interested.
104 $id_list{$id} = 1 if (!defined($id_list{$id}));
105 $id_list{$id} = 0 if (($insensitive && /$pattern/io) || /$pattern/o);
109 if (defined $id_list{$id} ||
110 ($insensitive && /$pattern/io) || /$pattern/o)
113 get_related_ids($id) if $related;
115 elsif ($related && $related_re)
117 grep_for_related($_, $id);
121 # See if this is a completion for some message. If it is interesting,
122 # print it, but in any event, throw away what was saved.
124 if (index($_, 'Completed') != -1 ||
125 index($_, 'SMTP data timeout') != -1 ||
126 (index($_, 'rejected') != -1 &&
127 /^(\d{4}-\d\d-\d\d \d\d:\d\d:\d\d(?:\.\d+)? (?:[+-]\d{4} )?)(?:\[\d+\] )?\w{6}\-\w{6}\-\w{2} rejected/o))
129 if ($queue_time != -1 &&
130 $saved{$id} =~ /^(\d{4}-\d\d-\d\d \d\d:\d\d:\d\d ([+-]\d{4} )?)/o)
132 my $old_sec = &seconds($1);
133 my $sec = &seconds($date);
134 $id_list{$id} = 0 if $id_list{$id} && $sec - $old_sec <= $queue_time;
137 print "$saved{$id}\n" if ($id_list{$id});
138 delete $id_list{$id};
143 # Handle the case where the log line does not belong to a specific message.
144 # Print it if it is interesting.
146 elsif ( ($invert && (($insensitive && !/$pattern/io) || !/$pattern/o)) ||
147 (!$invert && (($insensitive && /$pattern/io) || /$pattern/o)) )
151 # Rotated log files are frequently compressed and there are a variety of
152 # formats it could be compressed with. Rather than use just one that is
153 # detected and hardcoded at Exim compile time, detect and use what the
154 # logfile is compressed with on the fly.
156 # List of known compression extensions and their associated commands:
158 gz => { cmd => 'zcat', args => '' },
159 bz2 => { cmd => 'bzcat', args => '' },
160 xz => { cmd => 'xzcat', args => '' },
161 lzma => { cmd => 'lzma', args => '-dc' }
165 sub detect_compressor_bin
168 my $c = $compressors->{$ext}->{cmd};
169 $compressors->{$ext}->{bin} = `which $c 2>/dev/null`;
170 chomp($compressors->{$ext}->{bin});
173 sub detect_compressor_capable
175 my $filename = shift();
176 map { &detect_compressor_bin($_) } keys %$compressors
180 unless (grep {$filename =~ /\.(?:$_)$/} keys %$compressors);
181 # Loop through them, figure out which one it detected,
182 # and build the commandline.
184 foreach my $ext (keys %$compressors)
186 if ($filename =~ /\.(?:$ext)$/)
188 # Just die if compressor not found; if this occurs in the middle of
189 # two valid files with a lot of matches, error could easily be missed.
190 die("Didn't find $ext decompressor for $filename\n")
191 if ($compressors->{$ext}->{bin} eq '');
192 $cmdline = $compressors->{$ext}->{bin} ." ".
193 $compressors->{$ext}->{args};
200 sub grep_for_related {
202 $id_list{$id} = 1 if $line =~ m/$related_re/;
205 sub get_related_ids {
207 push @Mids, $id unless grep /\b$id\b/, @Mids;
208 my $re = join '|', @Mids;
209 $related_re = qr/$re/;
212 # The main program. Extract the pattern and make sure any relevant characters
213 # are quoted if the -l flag is given. The -t flag gives a time-on-queue value
214 # which is an additional condition. The -M flag will also display "related"
215 # loglines (msgid from matched lines is searched in following lines).
218 'I|sensitive' => sub { $insensitive = 0 },
219 'l|literal' => \$literal,
220 'M|related' => \$related,
221 't|queue-time=i' => \$queue_time,
222 'pager!' => \$use_pager,
223 'v|invert' => \$invert,
224 'h|help' => sub { pod2usage(-exit => 0, -verbose => 1) },
229 -noperldoc => system('perldoc -V 2>/dev/null >&2')
232 ) and @ARGV or pod2usage;
234 $pattern = shift @ARGV;
235 $pattern = quotemeta $pattern if $literal;
237 # Start a pager if output goes to a terminal
238 if (-t 1 and $use_pager)
240 foreach ($ENV{PAGER}//(), 'less', 'more')
242 local $ENV{LESS} .= ' --no-init --quit-if-one-screen';
243 open(my $pager, '|-', $_) or next;
249 # If file arguments are given, open each one and process according as it is
250 # is compressed or not.
257 if (-x 'ZCAT_COMMAND' && $filename =~ /\.(?:COMPRESS_SUFFIX)$/o)
259 open(LOG, "ZCAT_COMMAND $filename |") ||
260 die "Unable to zcat $filename: $!\n";
262 elsif (my $cmdline = &detect_compressor_capable($filename))
264 open(LOG, "$cmdline $filename |") ||
265 die "Unable to decompress $filename: $!\n";
269 open(LOG, "<$filename") || die "Unable to open $filename: $!\n";
271 do_line() while (<LOG>);
276 # If no files are named, process STDIN only
278 else { do_line() while (<STDIN>); }
280 # At the end of processing all the input, print any uncompleted messages.
284 print "+++ $_ has not completed +++\n$saved{$_}\n";
291 exigrep - search Exim's main log
295 B<exigrep> [options] pattern [log] ...
299 The B<exigrep> utility is a Perl script that searches one or more main log
300 files for entries that match a given pattern. When it finds a match,
301 it extracts all the log entries for the relevant message, not just
302 those that match the pattern. Thus, B<exigrep> can extract complete log
303 entries for a given message, or all mail for a given user, or for a
304 given host, for example.
306 If no file names are given on the command line, the standard input is read.
308 For known file extensions indicating compression (F<.gz>, F<.bz2>, F<.xz>, and F<.lzma>)
309 a suitable de-compressor is used, if available.
311 The output is sent through a pager if a terminal is connected to STDOUT. As
312 pager are considered: C<$ENV{PAGER}>, C<less>, C<more>.
318 =item B<-l>|B<--literal>
320 This means 'literal', that is, treat all characters in the
321 pattern as standing for themselves. Otherwise the pattern must be a
322 Perl regular expression. The pattern match is case-insensitive.
324 =item B<-t>|B<--queue-time> I<seconds>
326 Limit the output to messages that spent at least I<seconds> in the
329 =item B<-I>|B<--sensitive>
331 Do a case sensitive search.
333 =item B<-v>|B<--invert>
335 Invert the meaning of the search pattern. That is, print message log
336 entries that are not related to that pattern.
338 =item B<-M>|B<--related>
340 Search for related messages too.
344 Do not use a pager, even if STDOUT is connected to a terminal.
346 =item B<-h>|B<--help>
348 Print a short reference help. For more detailed help try L<exigrep(8)>,
353 Print this manual page of B<exigrep>.
359 L<exim(8)>, L<perlre(1)>, L<Exim|http://exim.org/>
363 This manual page was stitched together from spec.txt by Andreas Metzler L<ametzler at downhill.at.eu.org>
364 and updated by Heiko Schlittermann L<hs@schlittermann.de>.