Feature compile-guard

[exim.git] / src / src / exigrep.src

diff --git a/src/src/exigrep.src b/src/src/exigrep.src
index 6024b425f18a021cdd7485204f8e975bf5f8d274..2d3b40cbff57044c2e1ea21d60556ebec5af0c50 100644 (file)
--- a/src/src/exigrep.src
+++ b/src/src/exigrep.src
@@ -1,9 +1,8 @@
 #! PERL_COMMAND -w
-# $Cambridge: exim/src/src/exigrep.src,v 1.8 2007/03/13 11:26:49 ph10 Exp $
 
 use strict;
 
-# Copyright (c) 2007 University of Cambridge.
+# Copyright (c) 2007-2014 University of Cambridge.
 # See the file NOTICE for conditions of use and distribution.
 
 # Except when they appear in comments, the following placeholders in this
@@ -99,23 +98,19 @@ if (defined $id)
   # print it, but in any event, throw away what was saved.
 
   if (index($_, 'Completed') != -1 ||
-      (index($_, 'rejected') != -1 &&
-       /rejected (?:by local_scan|by non-SMTP ACL|after DATA)/o))
+      index($_, 'SMTP data timeout') != -1 ||
+        (index($_, 'rejected') != -1 &&
+          /^(\d{4}-\d\d-\d\d \d\d:\d\d:\d\d (?:[+-]\d{4} )?)(?:\[\d+\] )?\w{6}\-\w{6}\-\w{2} 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);
-      delete $id_list{$id} if $id_list{$id} && $sec - $old_sec <= $queue_time;
-      }
-
-    if ($id_list{$id})
-      {
-      delete $id_list{$id};
-      print "$saved{$id}\n";
+      $id_list{$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};
     }
@@ -129,6 +124,54 @@ elsif ( ($invert && (($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' }
+};
+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 occurrs 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;
+  }
 
 # 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
@@ -159,6 +202,11 @@ if (@ARGV)
       open(LOG, "ZCAT_COMMAND $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";
@@ -172,16 +220,11 @@ if (@ARGV)
 
 else { do_line() while (<STDIN>); }
 
-# At the end of processing all the input, print any uncompleted messages. If
-# there is no <= line, we are dealing with a message that was rejected or
-# abandoned.
+# At the end of processing all the input, print any uncompleted messages.
 
 for (keys %id_list)
   {
-  if ($saved{$_} =~ /\s<=\s/)
-    { print "+++ $_ has not completed +++\n$saved{$_}\n"; }
-  else
-    { print "+++ $_ was not accepted +++\n$saved{$_}\n"; }
+  print "+++ $_ has not completed +++\n$saved{$_}\n";
   }
 
 # End of exigrep