avoid perl warning when passed bad non-numeric year/month/day

[git.ikiwiki.info.git] / IkiWiki / Plugin / git.pm

diff --git a/IkiWiki/Plugin/git.pm b/IkiWiki/Plugin/git.pm
index 1facb14c0076f7c17eb5734727f8cfb9930cf02c..e8981325357132c109b9160c11a2f0884f1ab8a8 100644 (file)
--- a/IkiWiki/Plugin/git.pm
+++ b/IkiWiki/Plugin/git.pm
@@ -9,10 +9,12 @@ use open qw{:utf8 :std};
 
 my $sha1_pattern     = qr/[0-9a-fA-F]{40}/; # pattern to validate Git sha1sums
 my $dummy_commit_msg = 'dummy commit';      # message to skip in recent changes
 
 my $sha1_pattern     = qr/[0-9a-fA-F]{40}/; # pattern to validate Git sha1sums
 my $dummy_commit_msg = 'dummy commit';      # message to skip in recent changes

+my $no_chdir=0;

 
 

-sub import { #{{{
+sub import {

        hook(type => "checkconfig", id => "git", call => \&checkconfig);
        hook(type => "getsetup", id => "git", call => \&getsetup);
        hook(type => "checkconfig", id => "git", call => \&checkconfig);
        hook(type => "getsetup", id => "git", call => \&getsetup);

+       hook(type => "genwrapper", id => "git", call => \&genwrapper);

        hook(type => "rcs", id => "rcs_update", call => \&rcs_update);
        hook(type => "rcs", id => "rcs_prepedit", call => \&rcs_prepedit);
        hook(type => "rcs", id => "rcs_commit", call => \&rcs_commit);
        hook(type => "rcs", id => "rcs_update", call => \&rcs_update);
        hook(type => "rcs", id => "rcs_prepedit", call => \&rcs_prepedit);
        hook(type => "rcs", id => "rcs_commit", call => \&rcs_commit);


@@ -23,10 +25,13 @@ sub import { #{{{
        hook(type => "rcs", id => "rcs_recentchanges", call => \&rcs_recentchanges);
        hook(type => "rcs", id => "rcs_diff", call => \&rcs_diff);
        hook(type => "rcs", id => "rcs_getctime", call => \&rcs_getctime);
        hook(type => "rcs", id => "rcs_recentchanges", call => \&rcs_recentchanges);
        hook(type => "rcs", id => "rcs_diff", call => \&rcs_diff);
        hook(type => "rcs", id => "rcs_getctime", call => \&rcs_getctime);

-       hook(type => "rcs", id => "rcs_test_receive", call => \&rcs_test_receive);
-} #}}}
+       hook(type => "rcs", id => "rcs_getmtime", call => \&rcs_getmtime);
+       hook(type => "rcs", id => "rcs_receive", call => \&rcs_receive);
+       hook(type => "rcs", id => "rcs_preprevert", call => \&rcs_preprevert);
+       hook(type => "rcs", id => "rcs_revert", call => \&rcs_revert);
+}

 
 

-sub checkconfig () { #{{{
+sub checkconfig () {

        if (! defined $config{gitorigin_branch}) {
                $config{gitorigin_branch}="origin";
        }
        if (! defined $config{gitorigin_branch}) {
                $config{gitorigin_branch}="origin";
        }


@@ -38,23 +43,38 @@ sub checkconfig () { #{{{
                push @{$config{wrappers}}, {
                        wrapper => $config{git_wrapper},
                        wrappermode => (defined $config{git_wrappermode} ? $config{git_wrappermode} : "06755"),
                push @{$config{wrappers}}, {
                        wrapper => $config{git_wrapper},
                        wrappermode => (defined $config{git_wrappermode} ? $config{git_wrappermode} : "06755"),

+                       wrapper_background_command => $config{git_wrapper_background_command},

                };
        }
                };
        }

+

        if (defined $config{git_test_receive_wrapper} &&
        if (defined $config{git_test_receive_wrapper} &&

-           length $config{git_test_receive_wrapper}) {
+           length $config{git_test_receive_wrapper} &&
+           defined $config{untrusted_committers} &&
+           @{$config{untrusted_committers}}) {

                push @{$config{wrappers}}, {
                        test_receive => 1,
                        wrapper => $config{git_test_receive_wrapper},
                push @{$config{wrappers}}, {
                        test_receive => 1,
                        wrapper => $config{git_test_receive_wrapper},

-                       wrappermode => "0755",
+                       wrappermode => (defined $config{git_wrappermode} ? $config{git_wrappermode} : "06755"),

                };
        }
                };
        }

-} #}}}

 
 

-sub getsetup () { #{{{
+       # Avoid notes, parser does not handle and they only slow things down.
+       $ENV{GIT_NOTES_REF}="";
+       
+       # Run receive test only if being called by the wrapper, and not
+       # when generating same.
+       if ($config{test_receive} && ! exists $config{wrapper}) {
+               require IkiWiki::Receive;
+               IkiWiki::Receive::test();
+       }
+}
+
+sub getsetup () {

        return
                plugin => {
                        safe => 0, # rcs plugin
                        rebuild => undef,
        return
                plugin => {
                        safe => 0, # rcs plugin
                        rebuild => undef,

+                       section => "rcs",

                },
                git_wrapper => {
                        type => "string",
                },
                git_wrapper => {
                        type => "string",


@@ -63,6 +83,13 @@ sub getsetup () { #{{{
                        safe => 0, # file
                        rebuild => 0,
                },
                        safe => 0, # file
                        rebuild => 0,
                },

+               git_wrapper_background_command => {
+                       type => "string",
+                       example => "git push github",
+                       description => "shell command for git_wrapper to run, in the background",
+                       safe => 0, # command
+                       rebuild => 0,
+               },

                git_wrappermode => {
                        type => "string",
                        example => '06755',
                git_wrappermode => {
                        type => "string",
                        example => '06755',


@@ -77,7 +104,7 @@ sub getsetup () { #{{{
                        safe => 0, # file
                        rebuild => 0,
                },
                        safe => 0, # file
                        rebuild => 0,
                },

-               git_untrusted_committers => {
+               untrusted_committers => {

                        type => "string",
                        example => [],
                        description => "unix users whose commits should be checked by the pre-receive hook",
                        type => "string",
                        example => [],
                        description => "unix users whose commits should be checked by the pre-receive hook",


@@ -86,15 +113,15 @@ sub getsetup () { #{{{
                },
                historyurl => {
                        type => "string",
                },
                historyurl => {
                        type => "string",

-                       example => "http://git.example.com/gitweb.cgi?p=wiki.git;a=history;f=[[file]]",
+                       example => "http://git.example.com/gitweb.cgi?p=wiki.git;a=history;f=[[file]];hb=HEAD",

                        description => "gitweb url to show file history ([[file]] substituted)",
                        safe => 1,
                        rebuild => 1,
                },
                diffurl => {
                        type => "string",
                        description => "gitweb url to show file history ([[file]] substituted)",
                        safe => 1,
                        rebuild => 1,
                },
                diffurl => {
                        type => "string",

-                       example => "http://git.example.com/gitweb.cgi?p=wiki.git;a=blobdiff;h=[[sha1_to]];hp=[[sha1_from]];hb=[[sha1_parent]];f=[[file]]",
-                       description => "gitweb url to show a diff ([[sha1_to]], [[sha1_from]], [[sha1_parent]], and [[file]] substituted)",
+                       example => "http://git.example.com/gitweb.cgi?p=wiki.git;a=blobdiff;f=[[file]];h=[[sha1_to]];hp=[[sha1_from]];hb=[[sha1_commit]];hpb=[[sha1_parent]]",
+                       description => "gitweb url to show a diff ([[file]], [[sha1_to]], [[sha1_from]], [[sha1_commit]], and [[sha1_parent]] substituted)",

                        safe => 1,
                        rebuild => 1,
                },
                        safe => 1,
                        rebuild => 1,
                },


@@ -112,9 +139,19 @@ sub getsetup () { #{{{
                        safe => 0, # paranoia
                        rebuild => 0,
                },
                        safe => 0, # paranoia
                        rebuild => 0,
                },

-} #}}}
+}
+
+sub genwrapper {
+       if ($config{test_receive}) {
+               require IkiWiki::Receive;
+               return IkiWiki::Receive::genwrapper();
+       }
+       else {
+               return "";
+       }
+}

 
 

-sub safe_git (&@) { #{{{
+sub safe_git (&@) {

        # Start a child process safely without resorting /bin/sh.
        # Return command output or success state (in scalar context).
 
        # Start a child process safely without resorting /bin/sh.
        # Return command output or success state (in scalar context).
 


@@ -127,15 +164,25 @@ sub safe_git (&@) { #{{{
        if (!$pid) {
                # In child.
                # Git commands want to be in wc.
        if (!$pid) {
                # In child.
                # Git commands want to be in wc.

-               chdir $config{srcdir}
-                   or error("Cannot chdir to $config{srcdir}: $!");
+               if (! $no_chdir) {
+                       chdir $config{srcdir}
+                           or error("Cannot chdir to $config{srcdir}: $!");
+               }

                exec @cmdline or error("Cannot exec '@cmdline': $!");
        }
        # In parent.
 
                exec @cmdline or error("Cannot exec '@cmdline': $!");
        }
        # In parent.
 

+       # git output is probably utf-8 encoded, but may contain
+       # other encodings or invalidly encoded stuff. So do not rely
+       # on the normal utf-8 IO layer, decode it by hand.
+       binmode($OUT);
+

        my @lines;
        while (<$OUT>) {
        my @lines;
        while (<$OUT>) {

+               $_=decode_utf8($_, 0);
+

                chomp;
                chomp;

+

                push @lines, $_;
        }
 
                push @lines, $_;
        }
 


@@ -149,9 +196,9 @@ sub safe_git (&@) { #{{{
 sub run_or_die ($@) { safe_git(\&error, @_) }
 sub run_or_cry ($@) { safe_git(sub { warn @_ },  @_) }
 sub run_or_non ($@) { safe_git(undef,            @_) }
 sub run_or_die ($@) { safe_git(\&error, @_) }
 sub run_or_cry ($@) { safe_git(sub { warn @_ },  @_) }
 sub run_or_non ($@) { safe_git(undef,            @_) }

-#}}}

 
 

-sub merge_past ($$$) { #{{{
+
+sub merge_past ($$$) {

        # Unlike with Subversion, Git cannot make a 'svn merge -rN:M file'.
        # Git merge commands work with the committed changes, except in the
        # implicit case of '-m' of git checkout(1).  So we should invent a
        # Unlike with Subversion, Git cannot make a 'svn merge -rN:M file'.
        # Git merge commands work with the committed changes, except in the
        # implicit case of '-m' of git checkout(1).  So we should invent a


@@ -243,13 +290,37 @@ sub merge_past ($$$) { #{{{
        error("Git merge failed!\n$failure\n") if $failure;
 
        return $conflict;
        error("Git merge failed!\n$failure\n") if $failure;
 
        return $conflict;

-} #}}}
+}
+
+{
+my $prefix;
+sub decode_git_file ($) {
+       my $file=shift;
+
+       # git does not output utf-8 filenames, but instead
+       # double-quotes them with the utf-8 characters
+       # escaped as \nnn\nnn.
+       if ($file =~ m/^"(.*)"$/) {
+               ($file=$1) =~ s/\\([0-7]{1,3})/chr(oct($1))/eg;
+       }

 
 

-sub parse_diff_tree ($@) { #{{{
+       # strip prefix if in a subdir
+       if (! defined $prefix) {
+               ($prefix) = run_or_die('git', 'rev-parse', '--show-prefix');
+               if (! defined $prefix) {
+                       $prefix="";
+               }
+       }
+       $file =~ s/^\Q$prefix\E//;
+
+       return decode("utf8", $file);
+}
+}
+
+sub parse_diff_tree ($) {

        # Parse the raw diff tree chunk and return the info hash.
        # See git-diff-tree(1) for the syntax.
        # Parse the raw diff tree chunk and return the info hash.
        # See git-diff-tree(1) for the syntax.

-
-       my ($prefix, $dt_ref) = @_;
+       my $dt_ref = shift;

 
        # End of stream?
        return if !defined @{ $dt_ref } ||
 
        # End of stream?
        return if !defined @{ $dt_ref } ||


@@ -283,8 +354,9 @@ sub parse_diff_tree ($@) { #{{{
                        $ci{ "${who}_epoch" } = $epoch;
                        $ci{ "${who}_tz"    } = $tz;
 
                        $ci{ "${who}_epoch" } = $epoch;
                        $ci{ "${who}_tz"    } = $tz;
 

-                       if ($name =~ m/^[^<]+\s+<([^@>]+)/) {
-                               $ci{"${who}_username"} = $1;
+                       if ($name =~ m/^([^<]+)\s+<([^@>]+)/) {
+                               $ci{"${who}_name"} = $1;
+                               $ci{"${who}_username"} = $2;

                        }
                        elsif ($name =~ m/^([^<]+)\s+<>$/) {
                                $ci{"${who}_username"} = $1;
                        }
                        elsif ($name =~ m/^([^<]+)\s+<>$/) {
                                $ci{"${who}_username"} = $1;


@@ -332,16 +404,9 @@ sub parse_diff_tree ($@) { #{{{
                        my $sha1_to = shift(@tmp);
                        my $status = shift(@tmp);
 
                        my $sha1_to = shift(@tmp);
                        my $status = shift(@tmp);
 

-                       # git does not output utf-8 filenames, but instead
-                       # double-quotes them with the utf-8 characters
-                       # escaped as \nnn\nnn.
-                       if ($file =~ m/^"(.*)"$/) {
-                               ($file=$1) =~ s/\\([0-7]{1,3})/chr(oct($1))/eg;
-                       }
-                       $file =~ s/^\Q$prefix\E//;

                        if (length $file) {
                                push @{ $ci{'details'} }, {
                        if (length $file) {
                                push @{ $ci{'details'} }, {

-                                       'file'      => decode("utf8", $file),
+                                       'file'      => decode_git_file($file),

                                        'sha1_from' => $sha1_from[0],
                                        'sha1_to'   => $sha1_to,
                                        'mode_from' => $mode_from[0],
                                        'sha1_from' => $sha1_from[0],
                                        'sha1_to'   => $sha1_to,
                                        'mode_from' => $mode_from[0],


@@ -355,30 +420,31 @@ sub parse_diff_tree ($@) { #{{{
        }
 
        return \%ci;
        }
 
        return \%ci;

-} #}}}
+}

 
 

-sub git_commit_info ($;$) { #{{{
+sub git_commit_info ($;$) {

        # Return an array of commit info hashes of num commits
        # starting from the given sha1sum.
        my ($sha1, $num) = @_;
 
        # Return an array of commit info hashes of num commits
        # starting from the given sha1sum.
        my ($sha1, $num) = @_;
 

-       my @raw_lines = run_or_die('git', 'log',
-               (defined $num ? "--max-count=$num" : ""), 
+       my @opts;
+       push @opts, "--max-count=$num" if defined $num;
+
+       my @raw_lines = run_or_die('git', 'log', @opts,

                '--pretty=raw', '--raw', '--abbrev=40', '--always', '-c',
                '-r', $sha1, '--', '.');
                '--pretty=raw', '--raw', '--abbrev=40', '--always', '-c',
                '-r', $sha1, '--', '.');

-       my ($prefix) = run_or_die('git', 'rev-parse', '--show-prefix');

 
        my @ci;
 
        my @ci;

-       while (my $parsed = parse_diff_tree(($prefix or ""), \@raw_lines)) {
+       while (my $parsed = parse_diff_tree(\@raw_lines)) {

                push @ci, $parsed;
        }
 
        warn "Cannot parse commit info for '$sha1' commit" if !@ci;
 
        return wantarray ? @ci : $ci[0];
                push @ci, $parsed;
        }
 
        warn "Cannot parse commit info for '$sha1' commit" if !@ci;
 
        return wantarray ? @ci : $ci[0];

-} #}}}
+}

 
 

-sub git_sha1 (;$) { #{{{
+sub git_sha1 (;$) {

        # Return head sha1sum (of given file).
        my $file = shift || q{--};
 
        # Return head sha1sum (of given file).
        my $file = shift || q{--};
 


@@ -387,63 +453,85 @@ sub git_sha1 (;$) { #{{{
                '--', $file);
        if ($sha1) {
                ($sha1) = $sha1 =~ m/($sha1_pattern)/; # sha1 is untainted now
                '--', $file);
        if ($sha1) {
                ($sha1) = $sha1 =~ m/($sha1_pattern)/; # sha1 is untainted now

-       } else { debug("Empty sha1sum for '$file'.") }
+       }
+       else {
+               debug("Empty sha1sum for '$file'.");
+       }

        return defined $sha1 ? $sha1 : q{};
        return defined $sha1 ? $sha1 : q{};

-} #}}}
+}

 
 

-sub rcs_update () { #{{{
+sub rcs_update () {

        # Update working directory.
 
        if (length $config{gitorigin_branch}) {
        # Update working directory.
 
        if (length $config{gitorigin_branch}) {

-               run_or_cry('git', 'pull', $config{gitorigin_branch});
+               run_or_cry('git', 'pull', '--prune', $config{gitorigin_branch});

        }
        }

-} #}}}
+}

 
 

-sub rcs_prepedit ($) { #{{{
+sub rcs_prepedit ($) {

        # Return the commit sha1sum of the file when editing begins.
        # This will be later used in rcs_commit if a merge is required.
        my ($file) = @_;
 
        return git_sha1($file);
        # Return the commit sha1sum of the file when editing begins.
        # This will be later used in rcs_commit if a merge is required.
        my ($file) = @_;
 
        return git_sha1($file);

-} #}}}
+}

 
 

-sub rcs_commit ($$$;$$) { #{{{
+sub rcs_commit (@) {

        # Try to commit the page; returns undef on _success_ and
        # a version of the page with the rcs's conflict markers on
        # failure.
        # Try to commit the page; returns undef on _success_ and
        # a version of the page with the rcs's conflict markers on
        # failure.

-
-       my ($file, $message, $rcstoken, $user, $ipaddr) = @_;
+       my %params=@_;

 
        # Check to see if the page has been changed by someone else since
        # rcs_prepedit was called.
 
        # Check to see if the page has been changed by someone else since
        # rcs_prepedit was called.

-       my $cur    = git_sha1($file);
-       my ($prev) = $rcstoken =~ /^($sha1_pattern)$/; # untaint
+       my $cur    = git_sha1($params{file});
+       my ($prev) = $params{token} =~ /^($sha1_pattern)$/; # untaint

 
        if (defined $cur && defined $prev && $cur ne $prev) {
 
        if (defined $cur && defined $prev && $cur ne $prev) {

-               my $conflict = merge_past($prev, $file, $dummy_commit_msg);
+               my $conflict = merge_past($prev, $params{file}, $dummy_commit_msg);

                return $conflict if defined $conflict;
        }
 
                return $conflict if defined $conflict;
        }
 

-       rcs_add($file); 
-       return rcs_commit_staged($message, $user, $ipaddr);
-} #}}}
+       rcs_add($params{file});
+       return rcs_commit_staged(
+               message => $params{message},
+               session => $params{session},
+       );
+}

 
 

-sub rcs_commit_staged ($$$) {
+sub rcs_commit_staged (@) {

        # Commits all staged changes. Changes can be staged using rcs_add,
        # rcs_remove, and rcs_rename.
        # Commits all staged changes. Changes can be staged using rcs_add,
        # rcs_remove, and rcs_rename.

-       my ($message, $user, $ipaddr)=@_;
-
-       # Set the commit author and email to the web committer.
+       my %params=@_;
+       

        my %env=%ENV;
        my %env=%ENV;

-       if (defined $user || defined $ipaddr) {
-               my $u=defined $user ? $user : $ipaddr;
-               $ENV{GIT_AUTHOR_NAME}=$u;
-               $ENV{GIT_AUTHOR_EMAIL}="$u\@web";
+
+       if (defined $params{session}) {
+               # Set the commit author and email based on web session info.
+               my $u;
+               if (defined $params{session}->param("name")) {
+                       $u=$params{session}->param("name");
+               }
+               elsif (defined $params{session}->remote_addr()) {
+                       $u=$params{session}->remote_addr();
+               }
+               if (defined $u) {
+                       $u=encode_utf8($u);
+                       $ENV{GIT_AUTHOR_NAME}=$u;
+               }
+               if (defined $params{session}->param("nickname")) {
+                       $u=encode_utf8($params{session}->param("nickname"));
+                       $u=~s/\s+/_/g;
+                       $u=~s/[^-_0-9[:alnum:]]+//g;
+               }
+               if (defined $u) {
+                       $ENV{GIT_AUTHOR_EMAIL}="$u\@web";
+               }

        }
 
        }
 

-       $message = IkiWiki::possibly_foolish_untaint($message);
+       $params{message} = IkiWiki::possibly_foolish_untaint($params{message});

        my @opts;
        my @opts;

-       if ($message !~ /\S/) {
+       if ($params{message} !~ /\S/) {

                # Force git to allow empty commit messages.
                # (If this version of git supports it.)
                my ($version)=`git --version` =~ /git version (.*)/;
                # Force git to allow empty commit messages.
                # (If this version of git supports it.)
                my ($version)=`git --version` =~ /git version (.*)/;


@@ -451,13 +539,13 @@ sub rcs_commit_staged ($$$) {
                        push @opts, '--cleanup=verbatim';
                }
                else {
                        push @opts, '--cleanup=verbatim';
                }
                else {

-                       $message.=".";
+                       $params{message}.=".";

                }
        }
        push @opts, '-q';
        # git commit returns non-zero if file has not been really changed.
        # so we should ignore its exit status (hence run_or_non).
                }
        }
        push @opts, '-q';
        # git commit returns non-zero if file has not been really changed.
        # so we should ignore its exit status (hence run_or_non).

-       if (run_or_non('git', 'commit', @opts, '-m', $message)) {
+       if (run_or_non('git', 'commit', @opts, '-m', $params{message})) {

                if (length $config{gitorigin_branch}) {
                        run_or_cry('git', 'push', $config{gitorigin_branch});
                }
                if (length $config{gitorigin_branch}) {
                        run_or_cry('git', 'push', $config{gitorigin_branch});
                }


@@ -467,29 +555,29 @@ sub rcs_commit_staged ($$$) {
        return undef; # success
 }
 
        return undef; # success
 }
 

-sub rcs_add ($) { # {{{
+sub rcs_add ($) {

        # Add file to archive.
 
        my ($file) = @_;
 
        run_or_cry('git', 'add', $file);
        # Add file to archive.
 
        my ($file) = @_;
 
        run_or_cry('git', 'add', $file);

-} #}}}
+}

 
 

-sub rcs_remove ($) { # {{{
+sub rcs_remove ($) {

        # Remove file from archive.
 
        my ($file) = @_;
 
        run_or_cry('git', 'rm', '-f', $file);
        # Remove file from archive.
 
        my ($file) = @_;
 
        run_or_cry('git', 'rm', '-f', $file);

-} #}}}
+}

 
 

-sub rcs_rename ($$) { # {{{
+sub rcs_rename ($$) {

        my ($src, $dest) = @_;
 
        run_or_cry('git', 'mv', '-f', $src, $dest);
        my ($src, $dest) = @_;
 
        run_or_cry('git', 'mv', '-f', $src, $dest);

-} #}}}
+}

 
 

-sub rcs_recentchanges ($) { #{{{
+sub rcs_recentchanges ($) {

        # List of recent changes.
 
        my ($num) = @_;
        # List of recent changes.
 
        my ($num) = @_;


@@ -516,6 +604,7 @@ sub rcs_recentchanges ($) { #{{{
                        $diffurl =~ s/\[\[sha1_parent\]\]/$ci->{'parent'}/go;
                        $diffurl =~ s/\[\[sha1_from\]\]/$detail->{'sha1_from'}/go;
                        $diffurl =~ s/\[\[sha1_to\]\]/$detail->{'sha1_to'}/go;
                        $diffurl =~ s/\[\[sha1_parent\]\]/$ci->{'parent'}/go;
                        $diffurl =~ s/\[\[sha1_from\]\]/$detail->{'sha1_from'}/go;
                        $diffurl =~ s/\[\[sha1_to\]\]/$detail->{'sha1_to'}/go;

+                       $diffurl =~ s/\[\[sha1_commit\]\]/$sha1/go;

 
                        push @pages, {
                                page => pagename($file),
 
                        push @pages, {
                                page => pagename($file),


@@ -533,7 +622,16 @@ sub rcs_recentchanges ($) { #{{{
 
                my $user=$ci->{'author_username'};
                my $web_commit = ($ci->{'author'} =~ /\@web>/);
 
                my $user=$ci->{'author_username'};
                my $web_commit = ($ci->{'author'} =~ /\@web>/);

-               
+               my $nickname;
+
+               # Set nickname only if a non-url author_username is available,
+               # and author_name is an url.
+               if ($user !~ /:\/\// && defined $ci->{'author_name'} &&
+                   $ci->{'author_name'} =~ /:\/\//) {
+                       $nickname=$user;
+                       $user=$ci->{'author_name'};
+               }
+

                # compatability code for old web commit messages
                if (! $web_commit &&
                      defined $messages[0] &&
                # compatability code for old web commit messages
                if (! $web_commit &&
                      defined $messages[0] &&


@@ -546,6 +644,7 @@ sub rcs_recentchanges ($) { #{{{
                push @rets, {
                        rev        => $sha1,
                        user       => $user,
                push @rets, {
                        rev        => $sha1,
                        user       => $user,

+                       nickname   => $nickname,

                        committype => $web_commit ? "web" : "git",
                        when       => $when,
                        message    => [@messages],
                        committype => $web_commit ? "web" : "git",
                        when       => $when,
                        message    => [@messages],


@@ -556,9 +655,9 @@ sub rcs_recentchanges ($) { #{{{
        }
 
        return @rets;
        }
 
        return @rets;

-} #}}}
+}

 
 

-sub rcs_diff ($) { #{{{
+sub rcs_diff ($) {

        my $rev=shift;
        my ($sha1) = $rev =~ /^($sha1_pattern)$/; # untaint
        my @lines;
        my $rev=shift;
        my ($sha1) = $rev =~ /^($sha1_pattern)$/; # untaint
        my @lines;


@@ -573,33 +672,64 @@ sub rcs_diff ($) { #{{{
        else {
                return join("", @lines);
        }
        else {
                return join("", @lines);
        }

-} #}}}
+}
+
+{
+my %time_cache;

 
 

-sub rcs_getctime ($) { #{{{
+sub findtimes ($$) {

        my $file=shift;
        my $file=shift;

-       # Remove srcdir prefix
-       $file =~ s/^\Q$config{srcdir}\E\/?//;
+       my $id=shift; # 0 = mtime ; 1 = ctime
+
+       if (! keys %time_cache) {
+               my $date;
+               foreach my $line (run_or_die('git', 'log',
+                               '--pretty=format:%ct',
+                               '--name-only', '--relative')) {
+                       if (! defined $date && $line =~ /^(\d+)$/) {
+                               $date=$line;
+                       }
+                       elsif (! length $line) {
+                               $date=undef;
+                       }
+                       else {
+                               my $f=decode_git_file($line);

 
 

-       my $sha1  = git_sha1($file);
-       my $ci    = git_commit_info($sha1, 1);
-       my $ctime = $ci->{'author_epoch'};
-       debug("ctime for '$file': ". localtime($ctime));
+                               if (! $time_cache{$f}) {
+                                       $time_cache{$f}[0]=$date; # mtime
+                               }
+                               $time_cache{$f}[1]=$date; # ctime
+                       }
+               }
+       }

 
 

-       return $ctime;
-} #}}}
+       return exists $time_cache{$file} ? $time_cache{$file}[$id] : 0;
+}

 
 

-sub rcs_test_receive () { #{{{
-       # quick success if the user is trusted
-       my $committer=(getpwuid($<))[0];
-       if (! defined $committer) {
-               error("cannot determine username for $<");
-       }
-       exit 0 if ! ref $config{git_untrusted_committers} ||
-                 ! grep { $_ eq $committer } @{$config{git_untrusted_committers}};
+}
+
+sub rcs_getctime ($) {
+       my $file=shift;

 
 

+       return findtimes($file, 1);
+}
+
+sub rcs_getmtime ($) {
+       my $file=shift;
+
+       return findtimes($file, 0);
+}
+
+{
+my $git_root;
+
+sub git_find_root {

        # The wiki may not be the only thing in the git repo.
        # Determine if it is in a subdirectory by examining the srcdir,
        # and its parents, looking for the .git directory.
        # The wiki may not be the only thing in the git repo.
        # Determine if it is in a subdirectory by examining the srcdir,
        # and its parents, looking for the .git directory.

+
+       return $git_root if defined $git_root;
+       

        my $subdir="";
        my $dir=$config{srcdir};
        while (! -d "$dir/.git") {
        my $subdir="";
        my $dir=$config{srcdir};
        while (! -d "$dir/.git") {


@@ -610,54 +740,119 @@ sub rcs_test_receive () { #{{{
                }
        }
 
                }
        }
 

-       my @errors;
-       while (<>) {
-               chomp;
-               my ($oldrev, $newrev, $refname) = split(' ', $_, 3);
+       return $git_root=$subdir;
+}

 
 

-               # only allow changes to gitmaster_branch
-               if ($refname !~ /^refs\/heads\/\Q$config{gitmaster_branch}\E$/) {
-                       push @errors, sprintf(gettext("you are not allowed to change %s"), $refname);
-               }
+}

 
 

-               foreach my $ci (git_commit_info($oldrev."..".$newrev)) {
-                       foreach my $detail (@{ $ci->{'details'} }) {
-                               my $file = $detail->{'file'};
+sub git_parse_changes {
+       my @changes = @_;

 
 

-                               # check that all changed files are in the subdir
-                               if (length $subdir &&
-                                   ! ($file =~ s/^\Q$subdir\E//)) {
-                                       push @errors, sprintf(gettext("you are not allowed to change %s"), $file);
-                                       next;
-                               }
+       my $subdir = git_find_root();
+       my @rets;
+       foreach my $ci (@changes) {
+               foreach my $detail (@{ $ci->{'details'} }) {
+                       my $file = $detail->{'file'};
+
+                       # check that all changed files are in the subdir
+                       if (length $subdir &&
+                           ! ($file =~ s/^\Q$subdir\E//)) {
+                               error sprintf(gettext("you are not allowed to change %s"), $file);
+                       }
+
+                       my ($action, $mode, $path);
+                       if ($detail->{'status'} =~ /^[M]+\d*$/) {
+                               $action="change";
+                               $mode=$detail->{'mode_to'};
+                       }
+                       elsif ($detail->{'status'} =~ /^[AM]+\d*$/) {
+                               $action="add";
+                               $mode=$detail->{'mode_to'};
+                       }
+                       elsif ($detail->{'status'} =~ /^[DAM]+\d*/) {
+                               $action="remove";
+                               $mode=$detail->{'mode_from'};
+                       }
+                       else {
+                               error "unknown status ".$detail->{'status'};
+                       }

 
 

+                       # test that the file mode is ok
+                       if ($mode !~ /^100[64][64][64]$/) {
+                               error sprintf(gettext("you cannot act on a file with mode %s"), $mode);
+                       }
+                       if ($action eq "change") {

                                if ($detail->{'mode_from'} ne $detail->{'mode_to'}) {
                                if ($detail->{'mode_from'} ne $detail->{'mode_to'}) {

-                                       push @errors, gettext("you are not allowed to change file modes");
+                                       error gettext("you are not allowed to change file modes");

                                }
                                }

+                       }

 
 

-                               if ($detail->{'status'} =~ /^D+\d*/) {
-                                       # TODO check_canremove
-                               }
-                               elsif ($detail->{'status'} !~ /^[MA]+\d*$/) {
-                                       push @errors, "unknown status ".$detail->{'status'};
-                               }
-                               else {
-                                       # TODO check_canedit
-                                       # TODO check_canattach
+                       # extract attachment to temp file
+                       if (($action eq 'add' || $action eq 'change') &&
+                           ! pagetype($file)) {
+                               eval q{use File::Temp};
+                               die $@ if $@;
+                               my $fh;
+                               ($fh, $path)=File::Temp::tempfile("XXXXXXXXXX", UNLINK => 1);
+                               my $cmd = ($no_chdir ? '' : "cd $config{srcdir} && ")
+                                       . "git show $detail->{sha1_to} > '$path'";
+                               if (system($cmd) != 0) {
+                                       error("failed writing temp file '$path'.");

                                }
                        }
                                }
                        }

+
+                       push @rets, {
+                               file => $file,
+                               action => $action,
+                               path => $path,
+                       };

                }
        }
 
                }
        }
 

-       if (@errors) {
-               # TODO clean up objects from failed push
+       return @rets;
+}
+
+sub rcs_receive () {
+       my @rets;
+       while (<>) {
+               chomp;
+               my ($oldrev, $newrev, $refname) = split(' ', $_, 3);

 
 

-               print STDERR "$_\n" foreach @errors;
-               exit 1;
+               # only allow changes to gitmaster_branch
+               if ($refname !~ /^refs\/heads\/\Q$config{gitmaster_branch}\E$/) {
+                       error sprintf(gettext("you are not allowed to change %s"), $refname);
+               }
+
+               # Avoid chdir when running git here, because the changes
+               # are in the master git repo, not the srcdir repo.
+               # The pre-receive hook already puts us in the right place.
+               $no_chdir=1;
+               push @rets, git_parse_changes(git_commit_info($oldrev."..".$newrev));
+               $no_chdir=0;
+       }
+
+       return reverse @rets;
+}
+
+sub rcs_preprevert ($) {
+       my $rev=shift;
+       my ($sha1) = $rev =~ /^($sha1_pattern)$/; # untaint
+
+       return git_parse_changes(git_commit_info($sha1, 1));
+}
+
+sub rcs_revert ($) {
+       # Try to revert the given rev; returns undef on _success_.
+       my $rev = shift;
+       my ($sha1) = $rev =~ /^($sha1_pattern)$/; # untaint
+
+       if (run_or_non('git', 'revert', '--no-commit', $sha1)) {
+               return undef;

        }
        else {
        }
        else {

-               exit 0;
+               run_or_die('git', 'reset', '--hard');
+               return sprintf(gettext("Failed to revert commit %s"), $sha1);

        }
        }

-} #}}}
+}

 
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