git/git-notify

Thu, 21 Aug 2014 21:01:32 +0200

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Thu, 21 Aug 2014 21:01:32 +0200
changeset 792
e4d1703d7593
permissions
-rw-r--r--

Update to finished configuration of summer software package stack.

     1 #!/usr/bin/perl -w
     2 #
     3 # Tool to send git commit notifications
     4 #
     5 # Copyright 2005 Alexandre Julliard
     6 #
     7 # This program is free software; you can redistribute it and/or
     8 # modify it under the terms of the GNU General Public License as
     9 # published by the Free Software Foundation; either version 2 of
    10 # the License, or (at your option) any later version.
    11 #
    12 #
    13 # This script is meant to be called from .git/hooks/post-receive.
    14 #
    15 # Usage: git-notify [options] [--] old-sha1 new-sha1 refname
    16 #
    17 #   -c name   Send CIA notifications under specified project name
    18 #   -m addr   Send mail notifications to specified address
    19 #   -n max    Set max number of individual mails to send
    20 #   -r name   Set the git repository name
    21 #   -s bytes  Set the maximum diff size in bytes (-1 for no limit)
    22 #   -u url    Set the URL to the gitweb browser
    23 #   -i branch If at least one -i is given, report only for specified branches
    24 #   -x branch Exclude changes to the specified branch from reports
    25 #   -X        Exclude merge commits
    26 #
    28 use strict;
    29 use open ':utf8';
    30 use Encode 'encode';
    31 use Cwd 'realpath';
    33 binmode STDIN, ':utf8';
    34 binmode STDOUT, ':utf8';
    36 sub git_config($);
    37 sub get_repos_name();
    39 # some parameters you may want to change
    41 # CIA notification address
    42 my $cia_address = "cia\@cia.navi.cx";
    44 # debug mode
    45 my $debug = 0;
    47 # configuration parameters
    49 # base URL of the gitweb repository browser (can be set with the -u option)
    50 my $gitweb_url = git_config( "notify.baseurl" );
    52 # default repository name (can be changed with the -r option)
    53 my $repos_name = git_config( "notify.repository" ) || get_repos_name();
    55 # max size of diffs in bytes (can be changed with the -s option)
    56 my $max_diff_size = git_config( "notify.maxdiff" ) || 10000;
    58 # address for mail notices (can be set with -m option)
    59 my $commitlist_address = git_config( "notify.mail" );
    61 # project name for CIA notices (can be set with -c option)
    62 my $cia_project_name = git_config( "notify.cia" );
    64 # max number of individual notices before falling back to a single global notice (can be set with -n option)
    65 my $max_individual_notices = git_config( "notify.maxnotices" ) || 100;
    67 # branches to include
    68 my @include_list = split /\s+/, git_config( "notify.include" ) || "";
    70 # branches to exclude
    71 my @exclude_list = split /\s+/, git_config( "notify.exclude" ) || "";
    73 # set this to something that takes "-s"
    74 my $mailer = git_config( "notify.mailer" ) || "/usr/bin/mail";
    76 # Extra options to git rev-list
    77 my @revlist_options;
    79 sub usage()
    80 {
    81     print "Usage: $0 [options] [--] old-sha1 new-sha1 refname\n";
    82     print "   -c name   Send CIA notifications under specified project name\n";
    83     print "   -m addr   Send mail notifications to specified address\n";
    84     print "   -n max    Set max number of individual mails to send\n";
    85     print "   -r name   Set the git repository name\n";
    86     print "   -s bytes  Set the maximum diff size in bytes (-1 for no limit)\n";
    87     print "   -u url    Set the URL to the gitweb browser\n";
    88     print "   -i branch If at least one -i is given, report only for specified branches\n";
    89     print "   -x branch Exclude changes to the specified branch from reports\n";
    90     print "   -X        Exclude merge commits\n";
    91     exit 1;
    92 }
    94 sub xml_escape($)
    95 {
    96     my $str = shift;
    97     $str =~ s/&/&amp;/g;
    98     $str =~ s/</&lt;/g;
    99     $str =~ s/>/&gt;/g;
   100     my @chars = unpack "U*", $str;
   101     $str = join "", map { ($_ > 127) ? sprintf "&#%u;", $_ : chr($_); } @chars;
   102     return $str;
   103 }
   105 # format an integer date + timezone as string
   106 # algorithm taken from git's date.c
   107 sub format_date($$)
   108 {
   109     my ($time,$tz) = @_;
   111     if ($tz < 0)
   112     {
   113         my $minutes = (-$tz / 100) * 60 + (-$tz % 100);
   114         $time -= $minutes * 60;
   115     }
   116     else
   117     {
   118         my $minutes = ($tz / 100) * 60 + ($tz % 100);
   119         $time += $minutes * 60;
   120     }
   121     return gmtime($time) . sprintf " %+05d", $tz;
   122 }
   124 # fetch a parameter from the git config file
   125 sub git_config($)
   126 {
   127     my ($param) = @_;
   129     open CONFIG, "-|" or exec "git", "config", $param;
   130     my $ret = <CONFIG>;
   131     chomp $ret if $ret;
   132     close CONFIG or $ret = undef;
   133     return $ret;
   134 }
   136 # parse command line options
   137 sub parse_options()
   138 {
   139     while (@ARGV && $ARGV[0] =~ /^-/)
   140     {
   141         my $arg = shift @ARGV;
   143         if ($arg eq '--') { last; }
   144         elsif ($arg eq '-c') { $cia_project_name = shift @ARGV; }
   145         elsif ($arg eq '-m') { $commitlist_address = shift @ARGV; }
   146         elsif ($arg eq '-n') { $max_individual_notices = shift @ARGV; }
   147         elsif ($arg eq '-r') { $repos_name = shift @ARGV; }
   148         elsif ($arg eq '-s') { $max_diff_size = shift @ARGV; }
   149         elsif ($arg eq '-u') { $gitweb_url = shift @ARGV; }
   150         elsif ($arg eq '-i') { push @include_list, shift @ARGV; }
   151         elsif ($arg eq '-x') { push @exclude_list, shift @ARGV; }
   152         elsif ($arg eq '-X') { push @revlist_options, "--no-merges"; }
   153         elsif ($arg eq '-d') { $debug++; }
   154         else { usage(); }
   155     }
   156     if (@ARGV && $#ARGV != 2) { usage(); }
   157     @exclude_list = map { "^$_"; } @exclude_list;
   158 }
   160 # send an email notification
   161 sub mail_notification($$$@)
   162 {
   163     my ($name, $subject, $content_type, @text) = @_;
   164     $subject = encode("MIME-Q",$subject);
   165     if ($debug)
   166     {
   167         print "---------------------\n";
   168         print "To: $name\n";
   169         print "Subject: $subject\n";
   170         print "Content-Type: $content_type\n";
   171         print "\n", join("\n", @text), "\n";
   172     }
   173     else
   174     {
   175         my $pid = open MAIL, "|-";
   176         return unless defined $pid;
   177         if (!$pid)
   178         {
   179             exec $mailer, "-s", $subject, "-a", "Content-Type: $content_type", $name or die "Cannot exec $mailer";
   180         }
   181         print MAIL join("\n", @text), "\n";
   182         close MAIL;
   183     }
   184 }
   186 # get the default repository name
   187 sub get_repos_name()
   188 {
   189     my $dir = `git rev-parse --git-dir`;
   190     chomp $dir;
   191     my $repos = realpath($dir);
   192     $repos =~ s/(.*?)((\.git\/)?\.git)$/$1/;
   193     $repos =~ s/(.*)\/([^\/]+)\/?$/$2/;
   194     return $repos;
   195 }
   197 # extract the information from a commit or tag object and return a hash containing the various fields
   198 sub get_object_info($)
   199 {
   200     my $obj = shift;
   201     my %info = ();
   202     my @log = ();
   203     my $do_log = 0;
   205     open TYPE, "-|" or exec "git", "cat-file", "-t", $obj or die "cannot run git-cat-file";
   206     my $type = <TYPE>;
   207     chomp $type;
   208     close TYPE;
   210     open OBJ, "-|" or exec "git", "cat-file", $type, $obj or die "cannot run git-cat-file";
   211     while (<OBJ>)
   212     {
   213         chomp;
   214         if ($do_log)
   215         {
   216             last if /^-----BEGIN PGP SIGNATURE-----/;
   217             push @log, $_;
   218         }
   219         elsif (/^(author|committer|tagger) ((.*)(<.*>)) (\d+) ([+-]\d+)$/)
   220         {
   221             $info{$1} = $2;
   222             $info{$1 . "_name"} = $3;
   223             $info{$1 . "_email"} = $4;
   224             $info{$1 . "_date"} = $5;
   225             $info{$1 . "_tz"} = $6;
   226         }
   227         elsif (/^tag (.*)$/)
   228         {
   229             $info{"tag"} = $1;
   230         }
   231         elsif (/^$/) { $do_log = 1; }
   232     }
   233     close OBJ;
   235     $info{"type"} = $type;
   236     $info{"log"} = \@log;
   237     return %info;
   238 }
   240 # send a commit notice to a mailing list
   241 sub send_commit_notice($$)
   242 {
   243     my ($ref,$obj) = @_;
   244     my %info = get_object_info($obj);
   245     my @notice = ();
   246     my $subject;
   248     if ($info{"type"} eq "tag")
   249     {
   250         push @notice,
   251         "Module: $repos_name",
   252         "Branch: $ref",
   253         "Tag:    $obj",
   254         $gitweb_url ? "URL:    $gitweb_url/?a=tag;h=$obj\n" : "",
   255         "Tagger: " . $info{"tagger"},
   256         "Date:   " . format_date($info{"tagger_date"},$info{"tagger_tz"}),
   257         "",
   258         join "\n", @{$info{"log"}};
   259         $subject = "Tag " . $info{"tag"} . " : " . $info{"tagger_name"} . ": " . ${$info{"log"}}[0];
   260     }
   261     else
   262     {
   263         push @notice,
   264         "Module: $repos_name",
   265         "Branch: $ref",
   266         "Commit: $obj",
   267         $gitweb_url ? "URL:    $gitweb_url/?a=commit;h=$obj\n" : "",
   268         "Author: " . $info{"author"},
   269         "Date:   " . format_date($info{"author_date"},$info{"author_tz"}),
   270         "",
   271         join "\n", @{$info{"log"}},
   272         "",
   273         "---",
   274         "";
   276         open STAT, "-|" or exec "git", "diff-tree", "--stat", "-M", "--no-commit-id", $obj or die "cannot exec git-diff-tree";
   277         push @notice, join("", <STAT>);
   278         close STAT;
   280         open DIFF, "-|" or exec "git", "diff-tree", "-p", "-M", "--no-commit-id", $obj or die "cannot exec git-diff-tree";
   281         my $diff = join( "", <DIFF> );
   282         close DIFF;
   284         if (($max_diff_size == -1) || (length($diff) < $max_diff_size))
   285         {
   286             push @notice, $diff;
   287         }
   288         else
   289         {
   290             push @notice, "Diff:   $gitweb_url/?a=commitdiff;h=$obj" if $gitweb_url;
   291         }
   293         $subject = $info{"author_name"} . ": " . ${$info{"log"}}[0];
   294     }
   296     mail_notification($commitlist_address, $subject, "text/plain; charset=UTF-8", @notice);
   297 }
   299 # send a commit notice to the CIA server
   300 sub send_cia_notice($$)
   301 {
   302     my ($ref,$commit) = @_;
   303     my %info = get_object_info($commit);
   304     my @cia_text = ();
   306     return if $info{"type"} ne "commit";
   308     push @cia_text,
   309         "<message>",
   310         "  <generator>",
   311         "    <name>git-notify script for CIA</name>",
   312         "  </generator>",
   313         "  <source>",
   314         "    <project>" . xml_escape($cia_project_name) . "</project>",
   315         "    <module>" . xml_escape($repos_name) . "</module>",
   316         "    <branch>" . xml_escape($ref). "</branch>",
   317         "  </source>",
   318         "  <body>",
   319         "    <commit>",
   320         "      <revision>" . substr($commit,0,10) . "</revision>",
   321         "      <author>" . xml_escape($info{"author"}) . "</author>",
   322         "      <log>" . xml_escape(join "\n", @{$info{"log"}}) . "</log>",
   323         "      <files>";
   325     open COMMIT, "-|" or exec "git", "diff-tree", "--name-status", "-r", "-M", $commit or die "cannot run git-diff-tree";
   326     while (<COMMIT>)
   327     {
   328         chomp;
   329         if (/^([AMD])\t(.*)$/)
   330         {
   331             my ($action, $file) = ($1, $2);
   332             my %actions = ( "A" => "add", "M" => "modify", "D" => "remove" );
   333             next unless defined $actions{$action};
   334             push @cia_text, "        <file action=\"$actions{$action}\">" . xml_escape($file) . "</file>";
   335         }
   336         elsif (/^R\d+\t(.*)\t(.*)$/)
   337         {
   338             my ($old, $new) = ($1, $2);
   339             push @cia_text, "        <file action=\"rename\" to=\"" . xml_escape($new) . "\">" . xml_escape($old) . "</file>";
   340         }
   341     }
   342     close COMMIT;
   344     push @cia_text,
   345         "      </files>",
   346         $gitweb_url ? "      <url>" . xml_escape("$gitweb_url/?a=commit;h=$commit") . "</url>" : "",
   347         "    </commit>",
   348         "  </body>",
   349         "  <timestamp>" . $info{"author_date"} . "</timestamp>",
   350         "</message>";
   352     mail_notification($cia_address, "DeliverXML", "text/xml", @cia_text);
   353 }
   355 # send a global commit notice when there are too many commits for individual mails
   356 sub send_global_notice($$$)
   357 {
   358     my ($ref, $old_sha1, $new_sha1) = @_;
   359     my @notice = ();
   361     push @revlist_options, "--pretty";
   362     open LIST, "-|" or exec "git", "rev-list", @revlist_options, "^$old_sha1", "$new_sha1", @exclude_list or die "cannot exec git-rev-list";
   363     while (<LIST>)
   364     {
   365         chomp;
   366         s/^commit /URL:    $gitweb_url\/?a=commit;h=/ if $gitweb_url;
   367         push @notice, $_;
   368     }
   369     close LIST;
   371     mail_notification($commitlist_address, "New commits on branch $ref", "text/plain; charset=UTF-8", @notice);
   372 }
   374 # send all the notices
   375 sub send_all_notices($$$)
   376 {
   377     my ($old_sha1, $new_sha1, $ref) = @_;
   379     $ref =~ s/^refs\/heads\///;
   381     return if (@include_list && !grep {$_ eq $ref} @include_list);
   383     if ($old_sha1 eq '0' x 40)  # new ref
   384     {
   385         send_commit_notice( $ref, $new_sha1 ) if $commitlist_address;
   386         return;
   387     }
   389     my @commits = ();
   391     open LIST, "-|" or exec "git", "rev-list", @revlist_options, "^$old_sha1", "$new_sha1", @exclude_list or die "cannot exec git-rev-list";
   392     while (<LIST>)
   393     {
   394         chomp;
   395         die "invalid commit $_" unless /^[0-9a-f]{40}$/;
   396         unshift @commits, $_;
   397     }
   398     close LIST;
   400     if (@commits > $max_individual_notices)
   401     {
   402         send_global_notice( $ref, $old_sha1, $new_sha1 ) if $commitlist_address;
   403         return;
   404     }
   406     foreach my $commit (@commits)
   407     {
   408         send_commit_notice( $ref, $commit ) if $commitlist_address;
   409         send_cia_notice( $ref, $commit ) if $cia_project_name;
   410     }
   411 }
   413 parse_options();
   415 # append repository path to URL
   416 $gitweb_url .= "/$repos_name.git" if $gitweb_url;
   418 if (@ARGV)
   419 {
   420     send_all_notices( $ARGV[0], $ARGV[1], $ARGV[2] );
   421 }
   422 else  # read them from stdin
   423 {
   424     while (<>)
   425     {
   426         chomp;
   427         if (/^([0-9a-f]{40}) ([0-9a-f]{40}) (.*)$/) { send_all_notices( $1, $2, $3 ); }
   428     }
   429 }
   431 exit 0;

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