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#! /usr/local/cpanel/3rdparty/perl/536/bin/perl # Copyright (c) The Exim Maintainers 2020 - 2023 # Copyright (c) 2007-2017 University of Cambridge. # See the file NOTICE for conditions of use and distribution. # SPDX-License-Identifier: GPL-2.0-or-later use warnings; use strict; BEGIN { pop @INC if $INC[-1] eq '.' }; use Pod::Usage; use Getopt::Long qw(:config no_ignore_case); use File::Basename; # Except when they appear in comments, the following placeholders in this # source are replaced when it is turned into a runnable script: # # PERL_COMMAND # ZCAT_COMMAND # COMPRESS_SUFFIX # This file has been so processed. # This is a perl script which extracts from an Exim log all entries # for all messages that have an entry that matches a given pattern. # If any entry for a particular message matches the pattern, all # entries for that message are displayed. # We buffer up information on a per-message basis. It is done this way rather # than reading the input twice so that the input can be a pipe. # There must be one argument, which is the pattern. Subsequent arguments # are the files to scan; if none, the standard input is read. If any file # appears to be compressed, it is passed through zcat. We can't just do this # for all files, because zcat chokes on non-compressed files. # Performance optimized in 02/02/2007 by Jori Hamalainen # Typical run time acceleration: 4 times use POSIX qw(mktime); # This subroutine converts a time/date string from an Exim log line into # the number of seconds since the epoch. It handles optional timezone # information. sub seconds { my($year,$month,$day,$hour,$min,$sec,$tzs,$tzh,$tzm) = $_[0] =~ /^(\d{4})-(\d\d)-(\d\d)\s(\d\d):(\d\d):(\d\d)(?:.\d+)?(?>\s([+-])(\d\d)(\d\d))?/o; my $seconds = mktime $sec, $min, $hour, $day, $month - 1, $year - 1900; if (defined $tzs) { $seconds -= $tzh * 3600 + $tzm * 60 if $tzs eq "+"; $seconds += $tzh * 3600 + $tzm * 60 if $tzs eq "-"; } return $seconds; } # This subroutine processes a single line (in $_) from a log file. Program # defensively against short lines finding their way into the log. my (%saved, %id_list, $pattern); my $queue_time = -1; my $insensitive = 1; my $invert = 0; my $related = 0; my $use_pager = 1; my $literal = 0; # If using "related" option, have to track extra message IDs my $related_re=''; my @Mids = (); sub do_line { # Convert syslog lines to mainlog format, as in eximstats. if (!/^\d{4}-/o) { $_ =~ s/^.? exim\b.?: //o; } return unless my($date,$id) = /^(\d{4}-\d\d-\d\d \d\d:\d\d:\d\d(?:\.\d+)? (?:[+-]\d{4} )?)(?:\[\d+\] )?(\w{6}\-\w{6}\-\w{2}\|\w{6}-\w{11}-\w{4})?/o; # Handle the case when the log line belongs to a specific message. We save # lines for specific messages until the message is complete. Then either print # or discard. if (defined $id) { $saved{$id} = '' unless defined($saved{$id}); # Save up the data for this message in case it becomes interesting later. $saved{$id} .= $_; # Are we interested in this id ? Short circuit if we already were interested. if ($invert) { $id_list{$id} = 1 if (!defined($id_list{$id})); $id_list{$id} = 0 if (($insensitive && /$pattern/io) \|\| /$pattern/o); } else { if (defined $id_list{$id} \|\| ($insensitive && /$pattern/io) \|\| /$pattern/o) { $id_list{$id} = 1; get_related_ids($id) if $related; } elsif ($related && $related_re) { grep_for_related($_, $id); } } # See if this is a completion for some message. If it is interesting, # print it, but in any event, throw away what was saved. if (index($_, 'Completed') != -1 \|\| index($_, 'SMTP data timeout') != -1 \|\| (index($_, 'rejected') != -1 && /^(\d{4}-\d\d-\d\d \d\d:\d\d:\d\d(?:\.\d+)? (?:[+-]\d{4} )?)(?:\[\d+\] )?(?:\w{6}\-\w{6}\-\w{2}\|\w{6}-\w{11}-\w{4}) rejected/o)) { if ($queue_time != -1 && $saved{$id} =~ /^(\d{4}-\d\d-\d\d \d\d:\d\d:\d\d ([+-]\d{4} )?)/o) { my $old_sec = &seconds($1); my $sec = &seconds($date); $id_list{$id} = 0 if $id_list{$id} && $sec - $old_sec <= $queue_time; } print "$saved{$id}\n" if ($id_list{$id}); delete $id_list{$id}; delete $saved{$id}; } } # Handle the case where the log line does not belong to a specific message. # Print it if it is interesting. elsif ( ($invert && (($insensitive && !/$pattern/io) \|\| !/$pattern/o)) \|\| (!$invert && (($insensitive && /$pattern/io) \|\| /$pattern/o)) ) { print "$_\n"; } } # Rotated log files are frequently compressed and there are a variety of # formats it could be compressed with. Rather than use just one that is # detected and hardcoded at Exim compile time, detect and use what the # logfile is compressed with on the fly. # # List of known compression extensions and their associated commands: my $compressors = { gz => { cmd => 'zcat', args => '' }, bz2 => { cmd => 'bzcat', args => '' }, xz => { cmd => 'xzcat', args => '' }, lzma => { cmd => 'lzma', args => '-dc' }, zst => { cmd => 'zstdcat', args => '' }, }; my $csearch = 0; sub detect_compressor_bin { my $ext = shift(); my $c = $compressors->{$ext}->{cmd}; $compressors->{$ext}->{bin} = `which $c 2>/dev/null`; chomp($compressors->{$ext}->{bin}); } sub detect_compressor_capable { my $filename = shift(); map { &detect_compressor_bin($_) } keys %$compressors if (!$csearch); $csearch = 1; return undef unless (grep {$filename =~ /\.(?:$_)$/} keys %$compressors); # Loop through them, figure out which one it detected, # and build the commandline. my $cmdline = undef; foreach my $ext (keys %$compressors) { if ($filename =~ /\.(?:$ext)$/) { # Just die if compressor not found; if this occurs in the middle of # two valid files with a lot of matches, error could easily be missed. die("Didn't find $ext decompressor for $filename\n") if ($compressors->{$ext}->{bin} eq ''); $cmdline = $compressors->{$ext}->{bin} ." ". $compressors->{$ext}->{args}; last; } } return $cmdline; } sub grep_for_related { my ($line,$id) = @_; $id_list{$id} = 1 if $line =~ m/$related_re/; } sub get_related_ids { my ($id) = @_; push @Mids, $id unless grep /\b$id\b/, @Mids; my $re = join '\|', @Mids; $related_re = qr/$re/; } # The main program. Extract the pattern and make sure any relevant characters # are quoted if the -l flag is given. The -t flag gives a time-on-queue value # which is an additional condition. The -M flag will also display "related" # loglines (msgid from matched lines is searched in following lines). GetOptions( 'I\|sensitive' => sub { $insensitive = 0 }, 'l\|literal' => \$literal, 'M\|related' => \$related, 't\|queue-time=i' => \$queue_time, 'pager!' => \$use_pager, 'v\|invert' => \$invert, 'h\|help' => sub { pod2usage(-exit => 0, -verbose => 1) }, 'm\|man' => sub { pod2usage( -exit => 0, -verbose => 2, -noperldoc => system('perldoc -V 2>/dev/null >&2') ); }, 'version' => sub { print basename($0) . ": $0\n", "build: 4.98\n", "perl(runtime): $]\n"; exit 0; }, ) and @ARGV or pod2usage; $pattern = shift @ARGV; $pattern = quotemeta $pattern if $literal; # Start a pager if output goes to a terminal if (-t 1 and $use_pager) { # for perl >= v5.10.x: foreach ($ENV{PAGER}//(), 'less', 'more') foreach (defined $ENV{PAGER} ? $ENV{PAGER} : (), 'less', 'more') { local $ENV{LESS} .= ' --no-init --quit-if-one-screen'; open(my $pager, '\|-', $_) or next; select $pager; last; } } # If file arguments are given, open each one and process according as it is # is compressed or not. if (@ARGV) { foreach (@ARGV) { my $filename = $_; if (-x '/bin/zcat' && $filename =~ /\.(?:gz)$/o) { open(LOG, "/bin/zcat $filename \|") \|\| die "Unable to zcat $filename: $!\n"; } elsif (my $cmdline = &detect_compressor_capable($filename)) { open(LOG, "$cmdline $filename \|") \|\| die "Unable to decompress $filename: $!\n"; } else { open(LOG, "<$filename") \|\| die "Unable to open $filename: $!\n"; } do_line() while (<LOG>); close(LOG); } } # If no files are named, process STDIN only else { do_line() while (<STDIN>); } # At the end of processing all the input, print any uncompleted messages. for (keys %id_list) { print "+++ $_ has not completed +++\n$saved{$_}\n"; } __END__ =head1 NAME exigrep - search Exim's main log =head1 SYNOPSIS B<exigrep> [options] pattern [log] ... =head1 DESCRIPTION The B<exigrep> utility is a Perl script that searches one or more main log files for entries that match a given pattern. When it finds a match, it extracts all the log entries for the relevant message, not just those that match the pattern. Thus, B<exigrep> can extract complete log entries for a given message, or all mail for a given user, or for a given host, for example. If no file names are given on the command line, the standard input is read. For known file extensions indicating compression (F<.gz>, F<.bz2>, F<.xz>, F<.lzma>, and F<.zst>) a suitable de-compressor is used, if available. The output is sent through a pager if a terminal is connected to STDOUT. As pager are considered: C<$ENV{PAGER}>, C<less>, C<more>. =head1 OPTIONS =over =item B<-l>\|B<--literal> This means 'literal', that is, treat all characters in the pattern as standing for themselves. Otherwise the pattern must be a Perl regular expression. The pattern match is case-insensitive. =item B<-t>\|B<--queue-time> I<seconds> Limit the output to messages that spent at least I<seconds> in the queue. =item B<-I>\|B<--sensitive> Do a case sensitive search. =item B<-v>\|B<--invert> Invert the meaning of the search pattern. That is, print message log entries that are not related to that pattern. =item B<-M>\|B<--related> Search for related messages too. =item B<--no-pager> Do not use a pager, even if STDOUT is connected to a terminal. =item B<-h>\|B<--help> Print a short reference help. For more detailed help try L<exigrep(8)>, or C<exigrep --man>. =item B<-m>\|B<--man> Print this manual page of B<exigrep>. =back =head1 SEE ALSO L<exim(8)>, L<perlre(1)>, L<Exim\|http://exim.org/> =head1 AUTHOR This manual page was stitched together from spec.txt by Andreas Metzler L<ametzler at downhill.at.eu.org> and updated by Heiko Schlittermann L<hs@schlittermann.de>. =cut

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