darcs branch retired

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

diff --git a/IkiWiki.pm b/IkiWiki.pm
index 2f274f3845145884403f1c5330128d1cef2cce73..ee07258ecce01cac5c94ecdf3878cf2a94213778 100644 (file)
--- a/IkiWiki.pm
+++ b/IkiWiki.pm
@@ -12,19 +12,21 @@ use Storable;
 use open qw{:utf8 :std};
 
 use vars qw{%config %links %oldlinks %pagemtime %pagectime %pagecase
 use open qw{:utf8 :std};
 
 use vars qw{%config %links %oldlinks %pagemtime %pagectime %pagecase

-           %pagestate %renderedfiles %oldrenderedfiles %pagesources
-           %destsources %depends %hooks %forcerebuild $gettext_obj};
+           %pagestate %wikistate %renderedfiles %oldrenderedfiles
+           %pagesources %destsources %depends %hooks %forcerebuild
+           $gettext_obj %loaded_plugins};

 
 use Exporter q{import};
 our @EXPORT = qw(hook debug error template htmlpage add_depends pagespec_match
                  bestlink htmllink readfile writefile pagetype srcfile pagename
                  displaytime will_render gettext urlto targetpage
 
 use Exporter q{import};
 our @EXPORT = qw(hook debug error template htmlpage add_depends pagespec_match
                  bestlink htmllink readfile writefile pagetype srcfile pagename
                  displaytime will_render gettext urlto targetpage

-                add_underlay
-                 %config %links %pagestate %renderedfiles
+                add_underlay pagetitle titlepage linkpage newpagefile
+                inject
+                 %config %links %pagestate %wikistate %renderedfiles

                  %pagesources %destsources);
                  %pagesources %destsources);

-our $VERSION = 2.00; # plugin interface version, next is ikiwiki version
+our $VERSION = 3.00; # plugin interface version, next is ikiwiki version

 our $version='unknown'; # VERSION_AUTOREPLACE done by Makefile, DNE
 our $version='unknown'; # VERSION_AUTOREPLACE done by Makefile, DNE

-my $installdir=''; # INSTALLDIR_AUTOREPLACE done by Makefile, DNE
+our $installdir=''; # INSTALLDIR_AUTOREPLACE done by Makefile, DNE

 
 # Optimisation.
 use Memoize;
 
 # Optimisation.
 use Memoize;


@@ -32,7 +34,7 @@ memoize("abs2rel");
 memoize("pagespec_translate");
 memoize("file_pruned");
 
 memoize("pagespec_translate");
 memoize("file_pruned");
 

-sub getsetup () { #{{{
+sub getsetup () {

        wikiname => {
                type => "string",
                default => "wiki",
        wikiname => {
                type => "string",
                default => "wiki",


@@ -40,6 +42,28 @@ sub getsetup () { #{{{
                safe => 1,
                rebuild => 1,
        },
                safe => 1,
                rebuild => 1,
        },

+       adminemail => {
+               type => "string",
+               default => undef,
+               example => 'me@example.com',
+               description => "contact email for wiki",
+               safe => 1,
+               rebuild => 0,
+       },
+       adminuser => {
+               type => "string",
+               default => [],
+               description => "users who are wiki admins",
+               safe => 1,
+               rebuild => 0,
+       },
+       banned_users => {
+               type => "string",
+               default => [],
+               description => "users who are banned from the wiki",
+               safe => 1,
+               rebuild => 0,
+       },

        srcdir => {
                type => "string",
                default => undef,
        srcdir => {
                type => "string",
                default => undef,


@@ -56,21 +80,6 @@ sub getsetup () { #{{{
                safe => 0, # path
                rebuild => 1,
        },
                safe => 0, # path
                rebuild => 1,
        },

-       adminuser => {
-               type => "string",
-               default => [],
-               description => "user names of wiki admins",
-               safe => 1,
-               rebuild => 0,
-       },
-       adminemail => {
-               type => "string",
-               default => undef,
-               example => 'me@example.com',
-               description => "contact email for wiki",
-               safe => 1,
-               rebuild => 0,
-       },

        url => {
                type => "string",
                default => '',
        url => {
                type => "string",
                default => '',


@@ -82,11 +91,26 @@ sub getsetup () { #{{{
        cgiurl => {
                type => "string",
                default => '',
        cgiurl => {
                type => "string",
                default => '',

-               examples => "http://example.com/wiki/ikiwiki.cgi",
+               example => "http://example.com/wiki/ikiwiki.cgi",

                description => "url to the ikiwiki.cgi",
                safe => 1,
                rebuild => 1,
        },
                description => "url to the ikiwiki.cgi",
                safe => 1,
                rebuild => 1,
        },

+       cgi_wrapper => {
+               type => "string",
+               default => '',
+               example => "/var/www/wiki/ikiwiki.cgi",
+               description => "filename of cgi wrapper to generate",
+               safe => 0, # file
+               rebuild => 0,
+       },
+       cgi_wrappermode => {
+               type => "string",
+               default => '06755',
+               description => "mode for cgi_wrapper (can safely be made suid)",
+               safe => 0,
+               rebuild => 0,
+       },

        rcs => {
                type => "string",
                default => '',
        rcs => {
                type => "string",
                default => '',


@@ -96,11 +120,11 @@ sub getsetup () { #{{{
        },
        default_plugins => {
                type => "internal",
        },
        default_plugins => {
                type => "internal",

-               default => [qw{mdwn link inline htmlscrubber passwordauth
+               default => [qw{mdwn link inline meta htmlscrubber passwordauth

                                openid signinedit lockedit conditional
                                openid signinedit lockedit conditional

-                               recentchanges parentlinks}],
+                               recentchanges parentlinks editpage}],

                description => "plugins to enable by default",
                description => "plugins to enable by default",

-               safe => 1,
+               safe => 0,

                rebuild => 1,
        },
        add_plugins => {
                rebuild => 1,
        },
        add_plugins => {


@@ -117,31 +141,11 @@ sub getsetup () { #{{{
                safe => 1,
                rebuild => 1,
        },
                safe => 1,
                rebuild => 1,
        },

-       wrappers => {
-               type => "string",
-               default => undef,
-               description => "definitions of wrappers to generate",
-               safe => 0,
-               rebuild => 0,
-       },
-       wrapper => {
-               type => "internal",
-               default => undef,
-               description => "wrapper filename",
-               safe => 0,
-               rebuild => 0,
-       },
-       wrappermode => {
-               type => "internal",
-               default => undef,
-               description => "mode of wrapper file",
-               safe => 0,
-               rebuild => 0,
-       },

        templatedir => {
                type => "string",
                default => "$installdir/share/ikiwiki/templates",
                description => "location of template files",
        templatedir => {
                type => "string",
                default => "$installdir/share/ikiwiki/templates",
                description => "location of template files",

+               advanced => 1,

                safe => 0, # path
                rebuild => 1,
        },
                safe => 0, # path
                rebuild => 1,
        },


@@ -149,9 +153,17 @@ sub getsetup () { #{{{
                type => "string",
                default => "$installdir/share/ikiwiki/basewiki",
                description => "base wiki source location",
                type => "string",
                default => "$installdir/share/ikiwiki/basewiki",
                description => "base wiki source location",

+               advanced => 1,

                safe => 0, # path
                rebuild => 0,
        },
                safe => 0, # path
                rebuild => 0,
        },

+       wrappers => {
+               type => "internal",
+               default => [],
+               description => "wrappers to generate",
+               safe => 0,
+               rebuild => 0,
+       },

        underlaydirs => {
                type => "internal",
                default => [],
        underlaydirs => {
                type => "internal",
                default => [],


@@ -161,14 +173,14 @@ sub getsetup () { #{{{
        },
        verbose => {
                type => "boolean",
        },
        verbose => {
                type => "boolean",

-               default => 0,
-               description => "display verbose messages when building?",
+               example => 1,
+               description => "display verbose messages?",

                safe => 1,
                rebuild => 0,
        },
        syslog => {
                type => "boolean",
                safe => 1,
                rebuild => 0,
        },
        syslog => {
                type => "boolean",

-               default => 0,
+               example => 1,

                description => "log to syslog?",
                safe => 1,
                rebuild => 0,
                description => "log to syslog?",
                safe => 1,
                rebuild => 0,


@@ -182,11 +194,18 @@ sub getsetup () { #{{{
        },
        prefix_directives => {
                type => "boolean",
        },
        prefix_directives => {
                type => "boolean",

-               default => 0,
+               default => 1,

                description => "use '!'-prefixed preprocessor directives?",
                safe => 0, # changing requires manual transition
                rebuild => 1,
        },
                description => "use '!'-prefixed preprocessor directives?",
                safe => 0, # changing requires manual transition
                rebuild => 1,
        },

+       indexpages => {
+               type => "boolean",
+               default => 0,
+               description => "use page/index.mdwn source files",
+               safe => 1,
+               rebuild => 1,
+       },

        discussion => {
                type => "boolean",
                default => 1,
        discussion => {
                type => "boolean",
                default => 1,


@@ -194,6 +213,14 @@ sub getsetup () { #{{{
                safe => 1,
                rebuild => 1,
        },
                safe => 1,
                rebuild => 1,
        },

+       sslcookie => {
+               type => "boolean",
+               default => 0,
+               description => "only send cookies over SSL connections?",
+               advanced => 1,
+               safe => 1,
+               rebuild => 0,
+       },

        default_pageext => {
                type => "string",
                default => "mdwn",
        default_pageext => {
                type => "string",
                default => "mdwn",


@@ -212,6 +239,7 @@ sub getsetup () { #{{{
                type => "string",
                default => '%c',
                description => "strftime format string to display date",
                type => "string",
                default => '%c',
                description => "strftime format string to display date",

+               advanced => 1,

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


@@ -220,16 +248,10 @@ sub getsetup () { #{{{
                default => undef,
                example => "en_US.UTF-8",
                description => "UTF-8 locale to use",
                default => undef,
                example => "en_US.UTF-8",
                description => "UTF-8 locale to use",

+               advanced => 1,

                safe => 0,
                rebuild => 1,
        },
                safe => 0,
                rebuild => 1,
        },

-       sslcookie => {
-               type => "boolean",
-               default => 0,
-               description => "only send cookies over SSL connections?",
-               safe => 1,
-               rebuild => 0,
-       },

        userdir => {
                type => "string",
                default => "",
        userdir => {
                type => "string",
                default => "",


@@ -249,14 +271,23 @@ sub getsetup () { #{{{
                type => "boolean",
                default => 0,
                description => "attempt to hardlink source files? (optimisation for large files)",
                type => "boolean",
                default => 0,
                description => "attempt to hardlink source files? (optimisation for large files)",

+               advanced => 1,

                safe => 0, # paranoia
                rebuild => 0,
        },
        umask => {
                type => "integer",
                safe => 0, # paranoia
                rebuild => 0,
        },
        umask => {
                type => "integer",

-               description => "",

                example => "022",
                description => "force ikiwiki to use a particular umask",
                example => "022",
                description => "force ikiwiki to use a particular umask",

+               advanced => 1,
+               safe => 0, # paranoia
+               rebuild => 0,
+       },
+       wrappergroup => {
+               type => "string",
+               example => "ikiwiki",
+               description => "group for wrappers to run in",
+               advanced => 1,

                safe => 0, # paranoia
                rebuild => 0,
        },
                safe => 0, # paranoia
                rebuild => 0,
        },


@@ -265,6 +296,7 @@ sub getsetup () { #{{{
                default => "",
                example => "$ENV{HOME}/.ikiwiki/",
                description => "extra library and plugin directory",
                default => "",
                example => "$ENV{HOME}/.ikiwiki/",
                description => "extra library and plugin directory",

+               advanced => 1,

                safe => 0, # directory
                rebuild => 0,
        },
                safe => 0, # directory
                rebuild => 0,
        },


@@ -280,6 +312,7 @@ sub getsetup () { #{{{
                default => undef,
                example => '\.wav$',
                description => "regexp of source files to ignore",
                default => undef,
                example => '\.wav$',
                description => "regexp of source files to ignore",

+               advanced => 1,

                safe => 0, # regexp
                rebuild => 1,
        },
                safe => 0, # regexp
                rebuild => 1,
        },


@@ -294,9 +327,15 @@ sub getsetup () { #{{{
                safe => 0,
                rebuild => 1,
        },
                safe => 0,
                rebuild => 1,
        },

+       wiki_file_chars => {
+               type => "string",
+               description => "specifies the characters that are allowed in source filenames",
+               default => "-[:alnum:]+/.:_",
+               safe => 0,
+               rebuild => 1,
+       },

        wiki_file_regexp => {
                type => "internal",
        wiki_file_regexp => {
                type => "internal",

-               default => qr/(^[-[:alnum:]_.:\/+]+$)/,

                description => "regexp of legal source files",
                safe => 0,
                rebuild => 1,
                description => "regexp of legal source files",
                safe => 0,
                rebuild => 1,


@@ -336,6 +375,13 @@ sub getsetup () { #{{{
                safe => 0,
                rebuild => 0,
        },
                safe => 0,
                rebuild => 0,
        },

+       setup => {
+               type => "internal",
+               default => undef,
+               description => "running in setup mode",
+               safe => 0,
+               rebuild => 0,
+       },

        refresh => {
                type => "internal",
                default => 0,
        refresh => {
                type => "internal",
                default => 0,


@@ -343,6 +389,13 @@ sub getsetup () { #{{{
                safe => 0,
                rebuild => 0,
        },
                safe => 0,
                rebuild => 0,
        },

+       test_receive => {
+               type => "internal",
+               default => 0,
+               description => "running in receive test mode",
+               safe => 0,
+               rebuild => 0,
+       },

        getctime => {
                type => "internal",
                default => 0,
        getctime => {
                type => "internal",
                default => 0,


@@ -357,16 +410,30 @@ sub getsetup () { #{{{
                safe => 0,
                rebuild => 0,
        },
                safe => 0,
                rebuild => 0,
        },

-       setup => {
+       wikistatedir => {

                type => "internal",
                default => undef,
                type => "internal",
                default => undef,

-               description => "setup file to read",
+               description => "path to the .ikiwiki directory holding ikiwiki state",

                safe => 0,
                rebuild => 0,
        },
                safe => 0,
                rebuild => 0,
        },

-} #}}}
+       setupfile => {
+               type => "internal",
+               default => undef,
+               description => "path to setup file",
+               safe => 0,
+               rebuild => 0,
+       },
+       allow_symlinks_before_srcdir => {
+               type => "boolean",
+               default => 0,
+               description => "allow symlinks in the path leading to the srcdir (potentially insecure)",
+               safe => 0,
+               rebuild => 0,
+       },
+}

 
 

-sub defaultconfig () { #{{{
+sub defaultconfig () {

        my %s=getsetup();
        my @ret;
        foreach my $key (keys %s) {
        my %s=getsetup();
        my @ret;
        foreach my $key (keys %s) {


@@ -374,9 +441,9 @@ sub defaultconfig () { #{{{
        }
        use Data::Dumper;
        return @ret;
        }
        use Data::Dumper;
        return @ret;

-} #}}}
+}

 
 

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

        # locale stuff; avoid LC_ALL since it overrides everything
        if (defined $ENV{LC_ALL}) {
                $ENV{LANG} = $ENV{LC_ALL};
        # locale stuff; avoid LC_ALL since it overrides everything
        if (defined $ENV{LC_ALL}) {
                $ENV{LANG} = $ENV{LC_ALL};


@@ -388,6 +455,10 @@ sub checkconfig () { #{{{
                        $gettext_obj=undef;
                }
        }
                        $gettext_obj=undef;
                }
        }

+               
+       if (! defined $config{wiki_file_regexp}) {
+               $config{wiki_file_regexp}=qr/(^[$config{wiki_file_chars}]+$)/;
+       }

 
        if (ref $config{ENV} eq 'HASH') {
                foreach my $val (keys %{$config{ENV}}) {
 
        if (ref $config{ENV} eq 'HASH') {
                foreach my $val (keys %{$config{ENV}}) {


@@ -410,17 +481,7 @@ sub checkconfig () { #{{{
        }
        
        $config{wikistatedir}="$config{srcdir}/.ikiwiki"
        }
        
        $config{wikistatedir}="$config{srcdir}/.ikiwiki"

-               unless exists $config{wikistatedir};
-       
-       if ($config{rcs}) {
-               eval qq{use IkiWiki::Rcs::$config{rcs}};
-               if ($@) {
-                       error("Failed to load RCS module IkiWiki::Rcs::$config{rcs}: $@");
-               }
-       }
-       else {
-               require IkiWiki::Rcs::Stub;
-       }
+               unless exists $config{wikistatedir} && defined $config{wikistatedir};

 
        if (defined $config{umask}) {
                umask(possibly_foolish_untaint($config{umask}));
 
        if (defined $config{umask}) {
                umask(possibly_foolish_untaint($config{umask}));


@@ -429,46 +490,58 @@ sub checkconfig () { #{{{
        run_hooks(checkconfig => sub { shift->() });
 
        return 1;
        run_hooks(checkconfig => sub { shift->() });
 
        return 1;

-} #}}}
+}

 
 

-sub listplugins () { #{{{
+sub listplugins () {

        my %ret;
 
        foreach my $dir (@INC, $config{libdir}) {
        my %ret;
 
        foreach my $dir (@INC, $config{libdir}) {

-               next unless defined $dir;
+               next unless defined $dir && length $dir;

                foreach my $file (glob("$dir/IkiWiki/Plugin/*.pm")) {
                        my ($plugin)=$file=~/.*\/(.*)\.pm$/;
                        $ret{$plugin}=1;
                }
        }
        foreach my $dir ($config{libdir}, "$installdir/lib/ikiwiki") {
                foreach my $file (glob("$dir/IkiWiki/Plugin/*.pm")) {
                        my ($plugin)=$file=~/.*\/(.*)\.pm$/;
                        $ret{$plugin}=1;
                }
        }
        foreach my $dir ($config{libdir}, "$installdir/lib/ikiwiki") {

-               next unless defined $dir;
+               next unless defined $dir && length $dir;

                foreach my $file (glob("$dir/plugins/*")) {
                        $ret{basename($file)}=1 if -x $file;
                }
        }
 
        return keys %ret;
                foreach my $file (glob("$dir/plugins/*")) {
                        $ret{basename($file)}=1 if -x $file;
                }
        }
 
        return keys %ret;

-} #}}}
+}

 
 

-sub loadplugins () { #{{{
-       if (defined $config{libdir}) {
+sub loadplugins () {
+       if (defined $config{libdir} && length $config{libdir}) {

                unshift @INC, possibly_foolish_untaint($config{libdir});
        }
 
                unshift @INC, possibly_foolish_untaint($config{libdir});
        }
 

-       loadplugin($_) foreach @{$config{default_plugins}}, @{$config{add_plugins}};
+       foreach my $plugin (@{$config{default_plugins}}, @{$config{add_plugins}}) {
+               loadplugin($plugin);
+       }
+       
+       if ($config{rcs}) {
+               if (exists $IkiWiki::hooks{rcs}) {
+                       error(gettext("cannot use multiple rcs plugins"));
+               }
+               loadplugin($config{rcs});
+       }
+       if (! exists $IkiWiki::hooks{rcs}) {
+               loadplugin("norcs");
+       }

 
        run_hooks(getopt => sub { shift->() });
        if (grep /^-/, @ARGV) {
 
        run_hooks(getopt => sub { shift->() });
        if (grep /^-/, @ARGV) {

-               print STDERR "Unknown option: $_\n"
+               print STDERR "Unknown option (or missing parameter): $_\n"

                        foreach grep /^-/, @ARGV;
                usage();
        }
 
        return 1;
                        foreach grep /^-/, @ARGV;
                usage();
        }
 
        return 1;

-} #}}}
+}

 
 

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

        my $plugin=shift;
 
        return if grep { $_ eq $plugin} @{$config{disable_plugins}};
        my $plugin=shift;
 
        return if grep { $_ eq $plugin} @{$config{disable_plugins}};


@@ -476,8 +549,13 @@ sub loadplugin ($) { #{{{
        foreach my $dir (defined $config{libdir} ? possibly_foolish_untaint($config{libdir}) : undef,
                         "$installdir/lib/ikiwiki") {
                if (defined $dir && -x "$dir/plugins/$plugin") {
        foreach my $dir (defined $config{libdir} ? possibly_foolish_untaint($config{libdir}) : undef,
                         "$installdir/lib/ikiwiki") {
                if (defined $dir && -x "$dir/plugins/$plugin") {

-                       require IkiWiki::Plugin::external;
+                       eval { require IkiWiki::Plugin::external };
+                       if ($@) {
+                               my $reason=$@;
+                               error(sprintf(gettext("failed to load external plugin needed for %s plugin: %s"), $plugin, $reason));
+                       }

                        import IkiWiki::Plugin::external "$dir/plugins/$plugin";
                        import IkiWiki::Plugin::external "$dir/plugins/$plugin";

+                       $loaded_plugins{$plugin}=1;

                        return 1;
                }
        }
                        return 1;
                }
        }


@@ -487,10 +565,11 @@ sub loadplugin ($) { #{{{
        if ($@) {
                error("Failed to load plugin $mod: $@");
        }
        if ($@) {
                error("Failed to load plugin $mod: $@");
        }

+       $loaded_plugins{$plugin}=1;

        return 1;
        return 1;

-} #}}}
+}

 
 

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

        my $message=shift;
        my $cleaner=shift;
        log_message('err' => $message) if $config{syslog};
        my $message=shift;
        my $cleaner=shift;
        log_message('err' => $message) if $config{syslog};


@@ -498,15 +577,15 @@ sub error ($;$) { #{{{
                $cleaner->();
        }
        die $message."\n";
                $cleaner->();
        }
        die $message."\n";

-} #}}}
+}

 
 

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

        return unless $config{verbose};
        return log_message(debug => @_);
        return unless $config{verbose};
        return log_message(debug => @_);

-} #}}}
+}

 
 my $log_open=0;
 
 my $log_open=0;

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

        my $type=shift;
 
        if ($config{syslog}) {
        my $type=shift;
 
        if ($config{syslog}) {


@@ -526,70 +605,97 @@ sub log_message ($$) { #{{{
        else {
                return print STDERR "@_\n";
        }
        else {
                return print STDERR "@_\n";
        }

-} #}}}
+}

 
 

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

        my $tainted=shift;
        my ($untainted)=$tainted=~/(.*)/s;
        return $untainted;
        my $tainted=shift;
        my ($untainted)=$tainted=~/(.*)/s;
        return $untainted;

-} #}}}
+}

 
 

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

        my $file=shift;
 
        $file=~s!.*/+!!;
        return $file;
        my $file=shift;
 
        $file=~s!.*/+!!;
        return $file;

-} #}}}
+}

 
 

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

        my $file=shift;
 
        $file=~s!/*[^/]+$!!;
        return $file;
        my $file=shift;
 
        $file=~s!/*[^/]+$!!;
        return $file;

-} #}}}
+}

 
 

-sub pagetype ($) { #{{{
+sub isinternal ($) {

        my $page=shift;
        my $page=shift;

+       return exists $pagesources{$page} &&
+               $pagesources{$page} =~ /\._([^.]+)$/;
+}
+
+sub pagetype ($) {
+       my $file=shift;

        
        

-       if ($page =~ /\.([^.]+)$/) {
+       if ($file =~ /\.([^.]+)$/) {

                return $1 if exists $hooks{htmlize}{$1};
        }
                return $1 if exists $hooks{htmlize}{$1};
        }

+       my $base=basename($file);
+       if (exists $hooks{htmlize}{$base} &&
+           $hooks{htmlize}{$base}{noextension}) {
+               return $base;
+       }

        return;
        return;

-} #}}}
-
-sub isinternal ($) { #{{{
-       my $page=shift;
-       return exists $pagesources{$page} &&
-               $pagesources{$page} =~ /\._([^.]+)$/;
-} #}}}
+}

 
 

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

        my $file=shift;
 
        my $type=pagetype($file);
        my $page=$file;
        my $file=shift;
 
        my $type=pagetype($file);
        my $page=$file;

-       $page=~s/\Q.$type\E*$// if defined $type;
+       $page=~s/\Q.$type\E*$//
+               if defined $type && !$hooks{htmlize}{$type}{keepextension}
+                       && !$hooks{htmlize}{$type}{noextension};
+       if ($config{indexpages} && $page=~/(.*)\/index$/) {
+               $page=$1;
+       }

        return $page;
        return $page;

-} #}}}
+}

 
 

-sub targetpage ($$) { #{{{
+sub newpagefile ($$) {
+       my $page=shift;
+       my $type=shift;
+
+       if (! $config{indexpages} || $page eq 'index') {
+               return $page.".".$type;
+       }
+       else {
+               return $page."/index.".$type;
+       }
+}
+
+sub targetpage ($$;$) {

        my $page=shift;
        my $ext=shift;
        my $page=shift;
        my $ext=shift;

+       my $filename=shift;

        
        

-       if (! $config{usedirs} || $page =~ /^index$/ ) {
+       if (defined $filename) {
+               return $page."/".$filename.".".$ext;
+       }
+       elsif (! $config{usedirs} || $page eq 'index') {

                return $page.".".$ext;
                return $page.".".$ext;

-       } else {
+       }
+       else {

                return $page."/index.".$ext;
        }
                return $page."/index.".$ext;
        }

-} #}}}
+}

 
 

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

        my $page=shift;
        
        return targetpage($page, $config{htmlext});
        my $page=shift;
        
        return targetpage($page, $config{htmlext});

-} #}}}
+}

 
 

-sub srcfile_stat { #{{{
+sub srcfile_stat {

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


@@ -599,26 +705,27 @@ sub srcfile_stat { #{{{
        }
        error("internal error: $file cannot be found in $config{srcdir} or underlay") unless $nothrow;
        return;
        }
        error("internal error: $file cannot be found in $config{srcdir} or underlay") unless $nothrow;
        return;

-} #}}}
+}

 
 

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

        return (srcfile_stat(@_))[0];
        return (srcfile_stat(@_))[0];

-} #}}}
+}

 
 

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

        my $dir=shift;
 
        my $dir=shift;
 

-       if ($dir=~/^\//) {
-               unshift @{$config{underlaydirs}}, $dir;
+       if ($dir !~ /^\//) {
+               $dir="$config{underlaydir}/../$dir";

        }
        }

-       else {
-               unshift @{$config{underlaydirs}}, "$config{underlaydir}/../$dir";
+
+       if (! grep { $_ eq $dir } @{$config{underlaydirs}}) {
+               unshift @{$config{underlaydirs}}, $dir;

        }
 
        return 1;
        }
 
        return 1;

-} #}}}
+}

 
 

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

        my $file=shift;
        my $binary=shift;
        my $wantfd=shift;
        my $file=shift;
        my $binary=shift;
        my $wantfd=shift;


@@ -632,11 +739,15 @@ sub readfile ($;$$) { #{{{
        binmode($in) if ($binary);
        return \*$in if $wantfd;
        my $ret=<$in>;
        binmode($in) if ($binary);
        return \*$in if $wantfd;
        my $ret=<$in>;

+       # check for invalid utf-8, and toss it back to avoid crashes
+       if (! utf8::valid($ret)) {
+               $ret=encode_utf8($ret);
+       }

        close $in || error("failed to read $file: $!");
        return $ret;
        close $in || error("failed to read $file: $!");
        return $ret;

-} #}}}
+}

 
 

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

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


@@ -660,9 +771,9 @@ sub prep_writefile ($$) { #{{{
        }
 
        return 1;
        }
 
        return 1;

-} #}}}
+}

 
 

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

        my $file=shift; # can include subdirs
        my $destdir=shift; # directory to put file in
        my $content=shift;
        my $file=shift; # can include subdirs
        my $destdir=shift; # directory to put file in
        my $content=shift;


@@ -690,17 +801,17 @@ sub writefile ($$$;$$) { #{{{
                error("failed renaming $newfile to $destdir/$file: $!", $cleanup);
 
        return 1;
                error("failed renaming $newfile to $destdir/$file: $!", $cleanup);
 
        return 1;

-} #}}}
+}

 
 my %cleared;
 
 my %cleared;

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

        my $page=shift;
        my $dest=shift;
        my $clear=shift;
 
        # Important security check.
        if (-e "$config{destdir}/$dest" && ! $config{rebuild} &&
        my $page=shift;
        my $dest=shift;
        my $clear=shift;
 
        # Important security check.
        if (-e "$config{destdir}/$dest" && ! $config{rebuild} &&

-           ! grep { $_ eq $dest } (@{$renderedfiles{$page}}, @{$oldrenderedfiles{$page}})) {
+           ! grep { $_ eq $dest } (@{$renderedfiles{$page}}, @{$oldrenderedfiles{$page}}, @{$wikistate{editpage}{previews}})) {

                error("$config{destdir}/$dest independently created, not overwriting with version from $page");
        }
 
                error("$config{destdir}/$dest independently created, not overwriting with version from $page");
        }
 


@@ -717,9 +828,9 @@ sub will_render ($$;$) { #{{{
        $destsources{$dest}=$page;
 
        return 1;
        $destsources{$dest}=$page;
 
        return 1;

-} #}}}
+}

 
 

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

        my $page=shift;
        my $link=shift;
        
        my $page=shift;
        my $link=shift;
        


@@ -741,7 +852,7 @@ sub bestlink ($$) { #{{{
                elsif (exists $pagecase{lc $l}) {
                        return $pagecase{lc $l};
                }
                elsif (exists $pagecase{lc $l}) {
                        return $pagecase{lc $l};
                }

-       } while $cwd=~s!/?[^/]+$!!;
+       } while $cwd=~s{/?[^/]+$}{};

 
        if (length $config{userdir}) {
                my $l = "$config{userdir}/".lc($link);
 
        if (length $config{userdir}) {
                my $l = "$config{userdir}/".lc($link);


@@ -755,15 +866,15 @@ sub bestlink ($$) { #{{{
 
        #print STDERR "warning: page $page, broken link: $link\n";
        return "";
 
        #print STDERR "warning: page $page, broken link: $link\n";
        return "";

-} #}}}
+}

 
 

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

        my $file=shift;
        
        return $file =~ /\.(png|gif|jpg|jpeg)$/i;
        my $file=shift;
        
        return $file =~ /\.(png|gif|jpg|jpeg)$/i;

-} #}}}
+}

 
 

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

        my $page=shift;
        my $unescaped=shift;
 
        my $page=shift;
        my $unescaped=shift;
 


@@ -775,28 +886,31 @@ sub pagetitle ($;$) { #{{{
        }
 
        return $page;
        }
 
        return $page;

-} #}}}
+}

 
 

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

        my $title=shift;
        my $title=shift;

-       $title=~s/([^-[:alnum:]:+\/.])/$1 eq ' ' ? '_' : "__".ord($1)."__"/eg;
+       # support use w/o %config set
+       my $chars = defined $config{wiki_file_chars} ? $config{wiki_file_chars} : "-[:alnum:]+/.:_";
+       $title=~s/([^$chars]|_)/$1 eq ' ' ? '_' : "__".ord($1)."__"/eg;

        return $title;
        return $title;

-} #}}}
+}

 
 

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

        my $link=shift;
        my $link=shift;

-       $link=~s/([^-[:alnum:]:+\/._])/$1 eq ' ' ? '_' : "__".ord($1)."__"/eg;
+       my $chars = defined $config{wiki_file_chars} ? $config{wiki_file_chars} : "-[:alnum:]+/.:_";
+       $link=~s/([^$chars])/$1 eq ' ' ? '_' : "__".ord($1)."__"/eg;

        return $link;
        return $link;

-} #}}}
+}

 
 

-sub cgiurl (@) { #{{{
+sub cgiurl (@) {

        my %params=@_;
 
        return $config{cgiurl}."?".
                join("&amp;", map $_."=".uri_escape_utf8($params{$_}), keys %params);
        my %params=@_;
 
        return $config{cgiurl}."?".
                join("&amp;", map $_."=".uri_escape_utf8($params{$_}), keys %params);

-} #}}}
+}

 
 

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

        my $page=shift;
 
        return "$config{url}/" if ! defined $page;
        my $page=shift;
 
        return "$config{url}/" if ! defined $page;


@@ -805,9 +919,9 @@ sub baseurl (;$) { #{{{
        $page=~s/[^\/]+$//;
        $page=~s/[^\/]+\//..\//g;
        return $page;
        $page=~s/[^\/]+$//;
        $page=~s/[^\/]+\//..\//g;
        return $page;

-} #}}}
+}

 
 

-sub abs2rel ($$) { #{{{
+sub abs2rel ($$) {

        # Work around very innefficient behavior in File::Spec if abs2rel
        # is passed two relative paths. It's much faster if paths are
        # absolute! (Debian bug #376658; fixed in debian unstable now)
        # Work around very innefficient behavior in File::Spec if abs2rel
        # is passed two relative paths. It's much faster if paths are
        # absolute! (Debian bug #376658; fixed in debian unstable now)


@@ -818,9 +932,16 @@ sub abs2rel ($$) { #{{{
        my $ret=File::Spec->abs2rel($path, $base);
        $ret=~s/^// if defined $ret;
        return $ret;
        my $ret=File::Spec->abs2rel($path, $base);
        $ret=~s/^// if defined $ret;
        return $ret;

-} #}}}
+}
+
+sub displaytime ($;$) {
+       # Plugins can override this function to mark up the time to
+       # display.
+       return '<span class="date">'.formattime(@_).'</span>';
+}

 
 

-sub displaytime ($;$) { #{{{
+sub formattime ($;$) {
+       # Plugins can override this function to format the time.

        my $time=shift;
        my $format=shift;
        if (! defined $format) {
        my $time=shift;
        my $format=shift;
        if (! defined $format) {


@@ -830,25 +951,25 @@ sub displaytime ($;$) { #{{{
        # strftime doesn't know about encodings, so make sure
        # its output is properly treated as utf8
        return decode_utf8(POSIX::strftime($format, localtime($time)));
        # strftime doesn't know about encodings, so make sure
        # its output is properly treated as utf8
        return decode_utf8(POSIX::strftime($format, localtime($time)));

-} #}}}
+}

 
 

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

        my $url=shift;
 
        my $url=shift;
 

-       if ($config{usedirs}) {
-               $url =~ s!/index.$config{htmlext}$!/!;
+       # Ensure url is not an empty link, and if necessary,
+       # add ./ to avoid colon confusion.
+       if ($url !~ /^\// && $url !~ /^\.\.?\//) {
+               $url="./$url";

        }
 
        }
 

-       # Ensure url is not an empty link, and
-       # if it's relative, make that explicit to avoid colon confusion.
-       if ($url !~ /^\//) {
-               $url="./$url";
+       if ($config{usedirs}) {
+               $url =~ s!/index.$config{htmlext}$!/!;

        }
 
        return $url;
        }
 
        return $url;

-} #}}}
+}

 
 

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

        my $to=shift;
        my $from=shift;
        my $absolute=shift;
        my $to=shift;
        my $from=shift;
        my $absolute=shift;


@@ -868,9 +989,9 @@ sub urlto ($$;$) { #{{{
        my $link = abs2rel($to, dirname(htmlpage($from)));
 
        return beautify_urlpath($link);
        my $link = abs2rel($to, dirname(htmlpage($from)));
 
        return beautify_urlpath($link);

-} #}}}
+}

 
 

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

        my $lpage=shift; # the page doing the linking
        my $page=shift; # the page that will contain the link (different for inline)
        my $link=shift;
        my $lpage=shift; # the page doing the linking
        my $page=shift; # the page that will contain the link (different for inline)
        my $link=shift;


@@ -933,9 +1054,9 @@ sub htmllink ($$$;@) { #{{{
        }
 
        return "<a href=\"$bestlink\"@attrs>$linktext</a>";
        }
 
        return "<a href=\"$bestlink\"@attrs>$linktext</a>";

-} #}}}
+}

 
 

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

        my $user=shift;
 
        my $oiduser=eval { openiduser($user) };
        my $user=shift;
 
        my $oiduser=eval { openiduser($user) };


@@ -950,9 +1071,9 @@ sub userlink ($) { #{{{
                        length $config{userdir} ? $config{userdir}."/".$user : $user
                ), noimageinline => 1);
        }
                        length $config{userdir} ? $config{userdir}."/".$user : $user
                ), noimageinline => 1);
        }

-} #}}}
+}

 
 

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

        my $page=shift;
        my $destpage=shift;
        my $type=shift;
        my $page=shift;
        my $destpage=shift;
        my $type=shift;


@@ -987,9 +1108,9 @@ sub htmlize ($$$$) { #{{{
        }
 
        return $content;
        }
 
        return $content;

-} #}}}
+}

 
 

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

        my $page=shift;
        my $destpage=shift;
        my $content=shift;
        my $page=shift;
        my $destpage=shift;
        my $content=shift;


@@ -1003,11 +1124,11 @@ sub linkify ($$$) { #{{{
        });
        
        return $content;
        });
        
        return $content;

-} #}}}
+}

 
 our %preprocessing;
 our $preprocess_preview=0;
 
 our %preprocessing;
 our $preprocess_preview=0;

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

        my $page=shift; # the page the data comes from
        my $destpage=shift; # the page the data will appear in (different for inline)
        my $content=shift;
        my $page=shift; # the page the data comes from
        my $destpage=shift; # the page the data will appear in (different for inline)
        my $content=shift;


@@ -1023,6 +1144,8 @@ sub preprocess ($$$;$$) { #{{{
                my $prefix=shift;
                my $command=shift;
                my $params=shift;
                my $prefix=shift;
                my $command=shift;
                my $params=shift;

+               $params="" if ! defined $params;
+

                if (length $escape) {
                        return "[[$prefix$command $params]]";
                }
                if (length $escape) {
                        return "[[$prefix$command $params]]";
                }


@@ -1067,13 +1190,10 @@ sub preprocess ($$$;$$) { #{{{
                        if ($preprocessing{$page}++ > 3) {
                                # Avoid loops of preprocessed pages preprocessing
                                # other pages that preprocess them, etc.
                        if ($preprocessing{$page}++ > 3) {
                                # Avoid loops of preprocessed pages preprocessing
                                # other pages that preprocess them, etc.

-                               #translators: The first parameter is a
-                               #translators: preprocessor directive name,
-                               #translators: the second a page name, the
-                               #translators: third a number.
-                               return "[[".sprintf(gettext("%s preprocessing loop detected on %s at depth %i"),
-                                       $command, $page, $preprocessing{$page}).
-                               "]]";
+                               return "[[!$command <span class=\"error\">".
+                                       sprintf(gettext("preprocessing loop detected on %s at depth %i"),
+                                               $page, $preprocessing{$page}).
+                                       "</span>]]";

                        }
                        my $ret;
                        if (! $scan) {
                        }
                        my $ret;
                        if (! $scan) {


@@ -1161,9 +1281,9 @@ sub preprocess ($$$;$$) { #{{{
 
        $content =~ s{$regex}{$handle->($1, $2, $3, $4)}eg;
        return $content;
 
        $content =~ s{$regex}{$handle->($1, $2, $3, $4)}eg;
        return $content;

-} #}}}
+}

 
 

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

        my $page=shift;
        my $destpage=shift;
        my $content=shift;
        my $page=shift;
        my $destpage=shift;
        my $content=shift;


@@ -1174,16 +1294,79 @@ sub filter ($$$) { #{{{
        });
 
        return $content;
        });
 
        return $content;

-} #}}}
+}

 
 

-sub indexlink () { #{{{
+sub indexlink () {

        return "<a href=\"$config{url}\">$config{wikiname}</a>";
        return "<a href=\"$config{url}\">$config{wikiname}</a>";

-} #}}}
+}
+
+sub check_canedit ($$$;$) {
+       my $page=shift;
+       my $q=shift;
+       my $session=shift;
+       my $nonfatal=shift;
+       
+       my $canedit;
+       run_hooks(canedit => sub {
+               return if defined $canedit;
+               my $ret=shift->($page, $q, $session);
+               if (defined $ret) {
+                       if ($ret eq "") {
+                               $canedit=1;
+                       }
+                       elsif (ref $ret eq 'CODE') {
+                               $ret->() unless $nonfatal;
+                               $canedit=0;
+                       }
+                       elsif (defined $ret) {
+                               error($ret) unless $nonfatal;
+                               $canedit=0;
+                       }
+               }
+       });
+       return defined $canedit ? $canedit : 1;
+}
+
+sub check_content (@) {
+       my %params=@_;
+       
+       return 1 if ! exists $hooks{checkcontent}; # optimisation
+
+       if (exists $pagesources{$params{page}}) {
+               my @diff;
+               my %old=map { $_ => 1 }
+                       split("\n", readfile(srcfile($pagesources{$params{page}})));
+               foreach my $line (split("\n", $params{content})) {
+                       push @diff, $line if ! exists $old{$_};
+               }
+               $params{content}=join("\n", @diff);
+       }
+
+       my $ok;
+       run_hooks(checkcontent => sub {
+               return if defined $ok;
+               my $ret=shift->(%params);
+               if (defined $ret) {
+                       if ($ret eq "") {
+                               $ok=1;
+                       }
+                       elsif (ref $ret eq 'CODE') {
+                               $ret->() unless $params{nonfatal};
+                               $ok=0;
+                       }
+                       elsif (defined $ret) {
+                               error($ret) unless $params{nonfatal};
+                               $ok=0;
+                       }
+               }
+
+       });
+       return defined $ok ? $ok : 1;
+}

 
 my $wikilock;
 
 
 my $wikilock;
 

-sub lockwiki (;$) { #{{{
-       my $wait=@_ ? shift : 1;
+sub lockwiki () {

        # Take an exclusive lock on the wiki to prevent multiple concurrent
        # run issues. The lock will be dropped on program exit.
        if (! -d $config{wikistatedir}) {
        # Take an exclusive lock on the wiki to prevent multiple concurrent
        # run issues. The lock will be dropped on program exit.
        if (! -d $config{wikistatedir}) {


@@ -1191,32 +1374,21 @@ sub lockwiki (;$) { #{{{
        }
        open($wikilock, '>', "$config{wikistatedir}/lockfile") ||
                error ("cannot write to $config{wikistatedir}/lockfile: $!");
        }
        open($wikilock, '>', "$config{wikistatedir}/lockfile") ||
                error ("cannot write to $config{wikistatedir}/lockfile: $!");

-       if (! flock($wikilock, 2 | 4)) { # LOCK_EX | LOCK_NB
-               if ($wait) {
-                       debug("wiki seems to be locked, waiting for lock");
-                       my $wait=600; # arbitrary, but don't hang forever to 
-                                     # prevent process pileup
-                       for (1..$wait) {
-                               return if flock($wikilock, 2 | 4);
-                               sleep 1;
-                       }
-                       error("wiki is locked; waited $wait seconds without lock being freed (possible stuck process or stale lock?)");
-               }
-               else {
-                       return 0;
-               }
+       if (! flock($wikilock, 2)) { # LOCK_EX
+               error("failed to get lock");

        }
        return 1;
        }
        return 1;

-} #}}}
+}

 
 

-sub unlockwiki () { #{{{
+sub unlockwiki () {
+       POSIX::close($ENV{IKIWIKI_CGILOCK_FD}) if exists $ENV{IKIWIKI_CGILOCK_FD};

        return close($wikilock) if $wikilock;
        return;
        return close($wikilock) if $wikilock;
        return;

-} #}}}
+}

 
 my $commitlock;
 
 
 my $commitlock;
 

-sub commit_hook_enabled () { #{{{
+sub commit_hook_enabled () {

        open($commitlock, '+>', "$config{wikistatedir}/commitlock") ||
                error("cannot write to $config{wikistatedir}/commitlock: $!");
        if (! flock($commitlock, 1 | 4)) { # LOCK_SH | LOCK_NB to test
        open($commitlock, '+>', "$config{wikistatedir}/commitlock") ||
                error("cannot write to $config{wikistatedir}/commitlock: $!");
        if (! flock($commitlock, 1 | 4)) { # LOCK_SH | LOCK_NB to test


@@ -1225,23 +1397,23 @@ sub commit_hook_enabled () { #{{{
        }
        close($commitlock) || error("failed closing commitlock: $!");
        return 1;
        }
        close($commitlock) || error("failed closing commitlock: $!");
        return 1;

-} #}}}
+}

 
 

-sub disable_commit_hook () { #{{{
+sub disable_commit_hook () {

        open($commitlock, '>', "$config{wikistatedir}/commitlock") ||
                error("cannot write to $config{wikistatedir}/commitlock: $!");
        if (! flock($commitlock, 2)) { # LOCK_EX
                error("failed to get commit lock");
        }
        return 1;
        open($commitlock, '>', "$config{wikistatedir}/commitlock") ||
                error("cannot write to $config{wikistatedir}/commitlock: $!");
        if (! flock($commitlock, 2)) { # LOCK_EX
                error("failed to get commit lock");
        }
        return 1;

-} #}}}
+}

 
 

-sub enable_commit_hook () { #{{{
+sub enable_commit_hook () {

        return close($commitlock) if $commitlock;
        return;
        return close($commitlock) if $commitlock;
        return;

-} #}}}
+}

 
 

-sub loadindex () { #{{{
+sub loadindex () {

        %oldrenderedfiles=%pagectime=();
        if (! $config{rebuild}) {
                %pagesources=%pagemtime=%oldlinks=%links=%depends=
        %oldrenderedfiles=%pagectime=();
        if (! $config{rebuild}) {
                %pagesources=%pagemtime=%oldlinks=%links=%depends=


@@ -1257,31 +1429,42 @@ sub loadindex () { #{{{
                        return;
                }
        }
                        return;
                }
        }

-       my $ret=Storable::fd_retrieve($in);
-       if (! defined $ret) {
+
+       my $index=Storable::fd_retrieve($in);
+       if (! defined $index) {

                return 0;
        }
                return 0;
        }

-       my %index=%$ret;
-       foreach my $src (keys %index) {
-               my %d=%{$index{$src}};
+
+       my $pages;
+       if (exists $index->{version} && ! ref $index->{version}) {
+               $pages=$index->{page};
+               %wikistate=%{$index->{state}};
+       }
+       else {
+               $pages=$index;
+               %wikistate=();
+       }
+
+       foreach my $src (keys %$pages) {
+               my $d=$pages->{$src};

                my $page=pagename($src);
                my $page=pagename($src);

-               $pagectime{$page}=$d{ctime};
+               $pagectime{$page}=$d->{ctime};

                if (! $config{rebuild}) {
                        $pagesources{$page}=$src;
                if (! $config{rebuild}) {
                        $pagesources{$page}=$src;

-                       $pagemtime{$page}=$d{mtime};
-                       $renderedfiles{$page}=$d{dest};
-                       if (exists $d{links} && ref $d{links}) {
-                               $links{$page}=$d{links};
-                               $oldlinks{$page}=[@{$d{links}}];
+                       $pagemtime{$page}=$d->{mtime};
+                       $renderedfiles{$page}=$d->{dest};
+                       if (exists $d->{links} && ref $d->{links}) {
+                               $links{$page}=$d->{links};
+                               $oldlinks{$page}=[@{$d->{links}}];

                        }
                        }

-                       if (exists $d{depends}) {
-                               $depends{$page}=$d{depends};
+                       if (exists $d->{depends}) {
+                               $depends{$page}=$d->{depends};

                        }
                        }

-                       if (exists $d{state}) {
-                               $pagestate{$page}=$d{state};
+                       if (exists $d->{state}) {
+                               $pagestate{$page}=$d->{state};

                        }
                }
                        }
                }

-               $oldrenderedfiles{$page}=[@{$d{dest}}];
+               $oldrenderedfiles{$page}=[@{$d->{dest}}];

        }
        foreach my $page (keys %pagesources) {
                $pagecase{lc $page}=$page;
        }
        foreach my $page (keys %pagesources) {
                $pagecase{lc $page}=$page;


@@ -1290,9 +1473,9 @@ sub loadindex () { #{{{
                $destsources{$_}=$page foreach @{$renderedfiles{$page}};
        }
        return close($in);
                $destsources{$_}=$page foreach @{$renderedfiles{$page}};
        }
        return close($in);

-} #}}}
+}

 
 

-sub saveindex () { #{{{
+sub saveindex () {

        run_hooks(savestate => sub { shift->() });
 
        my %hookids;
        run_hooks(savestate => sub { shift->() });
 
        my %hookids;


@@ -1307,12 +1490,13 @@ sub saveindex () { #{{{
        my $newfile="$config{wikistatedir}/indexdb.new";
        my $cleanup = sub { unlink($newfile) };
        open (my $out, '>', $newfile) || error("cannot write to $newfile: $!", $cleanup);
        my $newfile="$config{wikistatedir}/indexdb.new";
        my $cleanup = sub { unlink($newfile) };
        open (my $out, '>', $newfile) || error("cannot write to $newfile: $!", $cleanup);

+

        my %index;
        foreach my $page (keys %pagemtime) {
                next unless $pagemtime{$page};
                my $src=$pagesources{$page};
 
        my %index;
        foreach my $page (keys %pagemtime) {
                next unless $pagemtime{$page};
                my $src=$pagesources{$page};
 

-               $index{$src}={
+               $index{page}{$src}={

                        ctime => $pagectime{$page},
                        mtime => $pagemtime{$page},
                        dest => $renderedfiles{$page},
                        ctime => $pagectime{$page},
                        mtime => $pagemtime{$page},
                        dest => $renderedfiles{$page},


@@ -1320,17 +1504,26 @@ sub saveindex () { #{{{
                };
 
                if (exists $depends{$page}) {
                };
 
                if (exists $depends{$page}) {

-                       $index{$src}{depends} = $depends{$page};
+                       $index{page}{$src}{depends} = $depends{$page};

                }
 
                if (exists $pagestate{$page}) {
                        foreach my $id (@hookids) {
                                foreach my $key (keys %{$pagestate{$page}{$id}}) {
                }
 
                if (exists $pagestate{$page}) {
                        foreach my $id (@hookids) {
                                foreach my $key (keys %{$pagestate{$page}{$id}}) {

-                                       $index{$src}{state}{$id}{$key}=$pagestate{$page}{$id}{$key};
+                                       $index{page}{$src}{state}{$id}{$key}=$pagestate{$page}{$id}{$key};

                                }
                        }
                }
        }
                                }
                        }
                }
        }

+
+       $index{state}={};
+       foreach my $id (@hookids) {
+               foreach my $key (keys %{$wikistate{$id}}) {
+                       $index{state}{$id}{$key}=$wikistate{$id}{$key};
+               }
+       }
+       
+       $index{version}="3";

        my $ret=Storable::nstore_fd(\%index, $out);
        return if ! defined $ret || ! $ret;
        close $out || error("failed saving to $newfile: $!", $cleanup);
        my $ret=Storable::nstore_fd(\%index, $out);
        return if ! defined $ret || ! $ret;
        close $out || error("failed saving to $newfile: $!", $cleanup);


@@ -1338,18 +1531,18 @@ sub saveindex () { #{{{
                error("failed renaming $newfile to $config{wikistatedir}/indexdb", $cleanup);
        
        return 1;
                error("failed renaming $newfile to $config{wikistatedir}/indexdb", $cleanup);
        
        return 1;

-} #}}}
+}

 
 

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

        my $template=shift;
 
        foreach my $dir ($config{templatedir}, "$installdir/share/ikiwiki/templates") {
                return "$dir/$template" if -e "$dir/$template";
        }
        return;
        my $template=shift;
 
        foreach my $dir ($config{templatedir}, "$installdir/share/ikiwiki/templates") {
                return "$dir/$template" if -e "$dir/$template";
        }
        return;

-} #}}}
+}

 
 

-sub template_params (@) { #{{{
+sub template_params (@) {

        my $filename=template_file(shift);
 
        if (! defined $filename) {
        my $filename=template_file(shift);
 
        if (! defined $filename) {


@@ -1368,14 +1561,14 @@ sub template_params (@) { #{{{
                @_
        );
        return wantarray ? @ret : {@ret};
                @_
        );
        return wantarray ? @ret : {@ret};

-} #}}}
+}

 
 

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

        require HTML::Template;
        return HTML::Template->new(template_params(@_));
        require HTML::Template;
        return HTML::Template->new(template_params(@_));

-} #}}}
+}

 
 

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

        my $title=shift;
        my $pagebody=shift;
        
        my $title=shift;
        my $pagebody=shift;
        


@@ -1392,9 +1585,9 @@ sub misctemplate ($$;@) { #{{{
                shift->(page => "", destpage => "", template => $template);
        });
        return $template->output;
                shift->(page => "", destpage => "", template => $template);
        });
        return $template->output;

-}#}}}
+}

 
 

-sub hook (@) { # {{{
+sub hook (@) {

        my %param=@_;
        
        if (! exists $param{type} || ! ref $param{call} || ! exists $param{id}) {
        my %param=@_;
        
        if (! exists $param{type} || ! ref $param{call} || ! exists $param{id}) {


@@ -1405,69 +1598,86 @@ sub hook (@) { # {{{
        
        $hooks{$param{type}}{$param{id}}=\%param;
        return 1;
        
        $hooks{$param{type}}{$param{id}}=\%param;
        return 1;

-} # }}}
+}

 
 

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

        # Calls the given sub for each hook of the given type,
        # passing it the hook function to call.
        my $type=shift;
        my $sub=shift;
 
        if (exists $hooks{$type}) {
        # Calls the given sub for each hook of the given type,
        # passing it the hook function to call.
        my $type=shift;
        my $sub=shift;
 
        if (exists $hooks{$type}) {

-               my @deferred;
+               my (@first, @middle, @last);

                foreach my $id (keys %{$hooks{$type}}) {
                foreach my $id (keys %{$hooks{$type}}) {

-                       if ($hooks{$type}{$id}{last}) {
-                               push @deferred, $id;
-                               next;
+                       if ($hooks{$type}{$id}{first}) {
+                               push @first, $id;
+                       }
+                       elsif ($hooks{$type}{$id}{last}) {
+                               push @last, $id;
+                       }
+                       else {
+                               push @middle, $id;

                        }
                        }

-                       $sub->($hooks{$type}{$id}{call});

                }
                }

-               foreach my $id (@deferred) {
+               foreach my $id (@first, @middle, @last) {

                        $sub->($hooks{$type}{$id}{call});
                }
        }
 
        return 1;
                        $sub->($hooks{$type}{$id}{call});
                }
        }
 
        return 1;

-} #}}}
+}

 
 

-sub globlist_to_pagespec ($) { #{{{
-       my @globlist=split(' ', shift);
+sub rcs_update () {
+       $hooks{rcs}{rcs_update}{call}->(@_);
+}

 
 

-       my (@spec, @skip);
-       foreach my $glob (@globlist) {
-               if ($glob=~/^!(.*)/) {
-                       push @skip, $glob;
-               }
-               else {
-                       push @spec, $glob;
-               }
-       }
+sub rcs_prepedit ($) {
+       $hooks{rcs}{rcs_prepedit}{call}->(@_);
+}

 
 

-       my $spec=join(' or ', @spec);
-       if (@skip) {
-               my $skip=join(' and ', @skip);
-               if (length $spec) {
-                       $spec="$skip and ($spec)";
-               }
-               else {
-                       $spec=$skip;
-               }
-       }
-       return $spec;
-} #}}}
+sub rcs_commit ($$$;$$) {
+       $hooks{rcs}{rcs_commit}{call}->(@_);
+}

 
 

-sub is_globlist ($) { #{{{
-       my $s=shift;
-       return ( $s =~ /[^\s]+\s+([^\s]+)/ && $1 ne "and" && $1 ne "or" );
-} #}}}
+sub rcs_commit_staged ($$$) {
+       $hooks{rcs}{rcs_commit_staged}{call}->(@_);
+}

 
 

-sub safequote ($) { #{{{
+sub rcs_add ($) {
+       $hooks{rcs}{rcs_add}{call}->(@_);
+}
+
+sub rcs_remove ($) {
+       $hooks{rcs}{rcs_remove}{call}->(@_);
+}
+
+sub rcs_rename ($$) {
+       $hooks{rcs}{rcs_rename}{call}->(@_);
+}
+
+sub rcs_recentchanges ($) {
+       $hooks{rcs}{rcs_recentchanges}{call}->(@_);
+}
+
+sub rcs_diff ($) {
+       $hooks{rcs}{rcs_diff}{call}->(@_);
+}
+
+sub rcs_getctime ($) {
+       $hooks{rcs}{rcs_getctime}{call}->(@_);
+}
+
+sub rcs_receive () {
+       $hooks{rcs}{rcs_receive}{call}->();
+}
+
+sub safequote ($) {

        my $s=shift;
        $s=~s/[{}]//g;
        return "q{$s}";
        my $s=shift;
        $s=~s/[{}]//g;
        return "q{$s}";

-} #}}}
+}

 
 

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

        my $page=shift;
        my $pagespec=shift;
        
        my $page=shift;
        my $pagespec=shift;
        


@@ -1481,9 +1691,9 @@ sub add_depends ($$) { #{{{
        }
 
        return 1;
        }
 
        return 1;

-} # }}}
+}

 
 

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

        require File::Spec;
        my $file=File::Spec->canonpath(shift);
        my $base=File::Spec->canonpath(shift);
        require File::Spec;
        my $file=File::Spec->canonpath(shift);
        my $base=File::Spec->canonpath(shift);


@@ -1491,9 +1701,9 @@ sub file_pruned ($$) { #{{{
 
        my $regexp='('.join('|', @{$config{wiki_file_prune_regexps}}).')';
        return $file =~ m/$regexp/ && $file ne $base;
 
        my $regexp='('.join('|', @{$config{wiki_file_prune_regexps}}).')';
        return $file =~ m/$regexp/ && $file ne $base;

-} #}}}
+}

 
 

-sub gettext { #{{{
+sub gettext {

        # Only use gettext in the rare cases it's needed.
        if ((exists $ENV{LANG} && length $ENV{LANG}) ||
            (exists $ENV{LC_ALL} && length $ENV{LC_ALL}) ||
        # Only use gettext in the rare cases it's needed.
        if ((exists $ENV{LANG} && length $ENV{LANG}) ||
            (exists $ENV{LC_ALL} && length $ENV{LC_ALL}) ||


@@ -1514,39 +1724,50 @@ sub gettext { #{{{
        else {
                return shift;
        }
        else {
                return shift;
        }

-} #}}}
+}

 
 

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

        my $val=shift;
 
        my $val=shift;
 

-       return (defined $val && lc($val) eq gettext("yes"));
-} #}}}
+       return (defined $val && (lc($val) eq gettext("yes") || lc($val) eq "yes" || $val eq "1"));
+}
+
+sub inject {
+       # Injects a new function into the symbol table to replace an
+       # exported function.
+       my %params=@_;

 
 

-sub pagespec_merge ($$) { #{{{
+       # This is deep ugly perl foo, beware.
+       no strict;
+       no warnings;
+       if (! defined $params{parent}) {
+               $params{parent}='::';
+               $params{old}=\&{$params{name}};
+               $params{name}=~s/.*:://;
+       }
+       my $parent=$params{parent};
+       foreach my $ns (grep /^\w+::/, keys %{$parent}) {
+               $ns = $params{parent} . $ns;
+               inject(%params, parent => $ns) unless $ns eq '::main::';
+               *{$ns . $params{name}} = $params{call}
+                       if exists ${$ns}{$params{name}} &&
+                          \&{${$ns}{$params{name}}} == $params{old};
+       }
+       use strict;
+       use warnings;
+}
+
+sub pagespec_merge ($$) {

        my $a=shift;
        my $b=shift;
 
        return $a if $a eq $b;
        my $a=shift;
        my $b=shift;
 
        return $a if $a eq $b;

-
-        # Support for old-style GlobLists.
-        if (is_globlist($a)) {
-                $a=globlist_to_pagespec($a);
-        }
-        if (is_globlist($b)) {
-                $b=globlist_to_pagespec($b);
-        }
-

        return "($a) or ($b)";
        return "($a) or ($b)";

-} #}}}
+}

 
 

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

        my $spec=shift;
 
        my $spec=shift;
 

-       # Support for old-style GlobLists.
-       if (is_globlist($spec)) {
-               $spec=globlist_to_pagespec($spec);
-       }
-

        # Convert spec to perl code.
        my $code="";
        while ($spec=~m{
        # Convert spec to perl code.
        my $code="";
        while ($spec=~m{


@@ -1579,7 +1800,7 @@ sub pagespec_translate ($) { #{{{
                                $code.="IkiWiki::PageSpec::match_$1(\$page, ".safequote($2).", \@_)";
                        }
                        else {
                                $code.="IkiWiki::PageSpec::match_$1(\$page, ".safequote($2).", \@_)";
                        }
                        else {

-                               $code.=' 0';
+                               $code.="IkiWiki::FailReason->new(".safequote(qq{unknown function in pagespec "$word"}).")";

                        }
                }
                else {
                        }
                }
                else {


@@ -1588,14 +1809,14 @@ sub pagespec_translate ($) { #{{{
        }
 
        if (! length $code) {
        }
 
        if (! length $code) {

-               $code=0;
+               $code="IkiWiki::FailReason->new('empty pagespec')";

        }
 
        no warnings;
        return eval 'sub { my $page=shift; '.$code.' }';
        }
 
        no warnings;
        return eval 'sub { my $page=shift; '.$code.' }';

-} #}}}
+}

 
 

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

        my $page=shift;
        my $spec=shift;
        my @params=@_;
        my $page=shift;
        my $spec=shift;
        my @params=@_;


@@ -1606,69 +1827,76 @@ sub pagespec_match ($$;@) { #{{{
        }
 
        my $sub=pagespec_translate($spec);
        }
 
        my $sub=pagespec_translate($spec);

-       return IkiWiki::FailReason->new("syntax error in pagespec \"$spec\"") if $@;
+       return IkiWiki::FailReason->new("syntax error in pagespec \"$spec\"")
+               if $@ || ! defined $sub;

        return $sub->($page, @params);
        return $sub->($page, @params);

-} #}}}
+}

 
 

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

        my $spec=shift;
 
        my $sub=pagespec_translate($spec);
        return ! $@;
        my $spec=shift;
 
        my $sub=pagespec_translate($spec);
        return ! $@;

-} #}}}
-       
-sub glob2re ($) { #{{{
+}
+
+sub glob2re ($) {

        my $re=quotemeta(shift);
        $re=~s/\\\*/.*/g;
        $re=~s/\\\?/./g;
        return $re;
        my $re=quotemeta(shift);
        $re=~s/\\\*/.*/g;
        $re=~s/\\\?/./g;
        return $re;

-} #}}}
+}

 
 package IkiWiki::FailReason;
 
 
 package IkiWiki::FailReason;
 

-use overload ( #{{{
+use overload (

        '""'    => sub { ${$_[0]} },
        '0+'    => sub { 0 },
        '!'     => sub { bless $_[0], 'IkiWiki::SuccessReason'},
        fallback => 1,
        '""'    => sub { ${$_[0]} },
        '0+'    => sub { 0 },
        '!'     => sub { bless $_[0], 'IkiWiki::SuccessReason'},
        fallback => 1,

-); #}}}
+);

 
 

-sub new { #{{{
+sub new {

        my $class = shift;
        my $value = shift;
        return bless \$value, $class;
        my $class = shift;
        my $value = shift;
        return bless \$value, $class;

-} #}}}
+}

 
 package IkiWiki::SuccessReason;
 
 
 package IkiWiki::SuccessReason;
 

-use overload ( #{{{
+use overload (

        '""'    => sub { ${$_[0]} },
        '0+'    => sub { 1 },
        '!'     => sub { bless $_[0], 'IkiWiki::FailReason'},
        fallback => 1,
        '""'    => sub { ${$_[0]} },
        '0+'    => sub { 1 },
        '!'     => sub { bless $_[0], 'IkiWiki::FailReason'},
        fallback => 1,

-); #}}}
+);

 
 

-sub new { #{{{
+sub new {

        my $class = shift;
        my $value = shift;
        return bless \$value, $class;
        my $class = shift;
        my $value = shift;
        return bless \$value, $class;

-}; #}}}
+};

 
 package IkiWiki::PageSpec;
 
 
 package IkiWiki::PageSpec;
 

-sub match_glob ($$;@) { #{{{
+sub derel ($$) {
+       my $path=shift;
+       my $from=shift;
+
+       if ($path =~ m!^\./!) {
+               $from=~s#/?[^/]+$## if defined $from;
+               $path=~s#^\./##;
+               $path="$from/$path" if length $from;
+       }
+
+       return $path;
+}
+
+sub match_glob ($$;@) {

        my $page=shift;
        my $glob=shift;
        my %params=@_;
        
        my $page=shift;
        my $glob=shift;
        my %params=@_;
        

-       my $from=exists $params{location} ? $params{location} : '';
-       
-       # relative matching
-       if ($glob =~ m!^\./!) {
-               $from=~s#/?[^/]+$##;
-               $glob=~s#^\./##;
-               $glob="$from/$glob" if length $from;
-       }
+       $glob=derel($glob, $params{location});

 
        my $regexp=IkiWiki::glob2re($glob);
        if ($page=~/^$regexp$/i) {
 
        my $regexp=IkiWiki::glob2re($glob);
        if ($page=~/^$regexp$/i) {


@@ -1682,26 +1910,20 @@ sub match_glob ($$;@) { #{{{
        else {
                return IkiWiki::FailReason->new("$glob does not match $page");
        }
        else {
                return IkiWiki::FailReason->new("$glob does not match $page");
        }

-} #}}}
+}

 
 

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

        return match_glob($_[0], $_[1], @_, internal => 1)
        return match_glob($_[0], $_[1], @_, internal => 1)

-} #}}}
+}

 
 

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

        my $page=shift;
        my $link=lc(shift);
        my %params=@_;
 
        my $page=shift;
        my $link=lc(shift);
        my %params=@_;
 

+       $link=derel($link, $params{location});

        my $from=exists $params{location} ? $params{location} : '';
 
        my $from=exists $params{location} ? $params{location} : '';
 

-       # relative matching
-       if ($link =~ m!^\.! && defined $from) {
-               $from=~s#/?[^/]+$##;
-               $link=~s#^\./##;
-               $link="$from/$link" if length $from;
-       }
-

        my $links = $IkiWiki::links{$page};
        return IkiWiki::FailReason->new("$page has no links") unless $links && @{$links};
        my $bestlink = IkiWiki::bestlink($from, $link);
        my $links = $IkiWiki::links{$page};
        return IkiWiki::FailReason->new("$page has no links") unless $links && @{$links};
        my $bestlink = IkiWiki::bestlink($from, $link);


@@ -1713,18 +1935,25 @@ sub match_link ($$;@) { #{{{
                else {
                        return IkiWiki::SuccessReason->new("$page links to page $p matching $link")
                                if match_glob($p, $link, %params);
                else {
                        return IkiWiki::SuccessReason->new("$page links to page $p matching $link")
                                if match_glob($p, $link, %params);

+                       $p=~s/^\///;
+                       $link=~s/^\///;
+                       return IkiWiki::SuccessReason->new("$page links to page $p matching $link")
+                               if match_glob($p, $link, %params);

                }
        }
        return IkiWiki::FailReason->new("$page does not link to $link");
                }
        }
        return IkiWiki::FailReason->new("$page does not link to $link");

-} #}}}
+}

 
 

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

        return match_link($_[1], $_[0], @_);
        return match_link($_[1], $_[0], @_);

-} #}}}
+}

 
 

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

        my $page=shift;
        my $testpage=shift;
        my $page=shift;
        my $testpage=shift;

+       my %params=@_;
+       
+       $testpage=derel($testpage, $params{location});

 
        if (exists $IkiWiki::pagectime{$testpage}) {
                if ($IkiWiki::pagectime{$page} < $IkiWiki::pagectime{$testpage}) {
 
        if (exists $IkiWiki::pagectime{$testpage}) {
                if ($IkiWiki::pagectime{$page} < $IkiWiki::pagectime{$testpage}) {


@@ -1737,11 +1966,14 @@ sub match_created_before ($$;@) { #{{{
        else {
                return IkiWiki::FailReason->new("$testpage has no ctime");
        }
        else {
                return IkiWiki::FailReason->new("$testpage has no ctime");
        }

-} #}}}
+}

 
 

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

        my $page=shift;
        my $testpage=shift;
        my $page=shift;
        my $testpage=shift;

+       my %params=@_;
+       
+       $testpage=derel($testpage, $params{location});

 
        if (exists $IkiWiki::pagectime{$testpage}) {
                if ($IkiWiki::pagectime{$page} > $IkiWiki::pagectime{$testpage}) {
 
        if (exists $IkiWiki::pagectime{$testpage}) {
                if ($IkiWiki::pagectime{$page} > $IkiWiki::pagectime{$testpage}) {


@@ -1754,33 +1986,90 @@ sub match_created_after ($$;@) { #{{{
        else {
                return IkiWiki::FailReason->new("$testpage has no ctime");
        }
        else {
                return IkiWiki::FailReason->new("$testpage has no ctime");
        }

-} #}}}
+}

 
 

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

        if ((gmtime($IkiWiki::pagectime{shift()}))[3] == shift) {
                return IkiWiki::SuccessReason->new('creation_day matched');
        }
        else {
                return IkiWiki::FailReason->new('creation_day did not match');
        }
        if ((gmtime($IkiWiki::pagectime{shift()}))[3] == shift) {
                return IkiWiki::SuccessReason->new('creation_day matched');
        }
        else {
                return IkiWiki::FailReason->new('creation_day did not match');
        }

-} #}}}
+}

 
 

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

        if ((gmtime($IkiWiki::pagectime{shift()}))[4] + 1 == shift) {
                return IkiWiki::SuccessReason->new('creation_month matched');
        }
        else {
                return IkiWiki::FailReason->new('creation_month did not match');
        }
        if ((gmtime($IkiWiki::pagectime{shift()}))[4] + 1 == shift) {
                return IkiWiki::SuccessReason->new('creation_month matched');
        }
        else {
                return IkiWiki::FailReason->new('creation_month did not match');
        }

-} #}}}
+}

 
 

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

        if ((gmtime($IkiWiki::pagectime{shift()}))[5] + 1900 == shift) {
                return IkiWiki::SuccessReason->new('creation_year matched');
        }
        else {
                return IkiWiki::FailReason->new('creation_year did not match');
        }
        if ((gmtime($IkiWiki::pagectime{shift()}))[5] + 1900 == shift) {
                return IkiWiki::SuccessReason->new('creation_year matched');
        }
        else {
                return IkiWiki::FailReason->new('creation_year did not match');
        }

-} #}}}
+}
+
+sub match_user ($$;@) {
+       shift;
+       my $user=shift;
+       my %params=@_;
+       
+       if (! exists $params{user}) {
+               return IkiWiki::FailReason->new("no user specified");
+       }
+
+       if (defined $params{user} && lc $params{user} eq lc $user) {
+               return IkiWiki::SuccessReason->new("user is $user");
+       }
+       elsif (! defined $params{user}) {
+               return IkiWiki::FailReason->new("not logged in");
+       }
+       else {
+               return IkiWiki::FailReason->new("user is $params{user}, not $user");
+       }
+}
+
+sub match_admin ($$;@) {
+       shift;
+       shift;
+       my %params=@_;
+       
+       if (! exists $params{user}) {
+               return IkiWiki::FailReason->new("no user specified");
+       }
+
+       if (defined $params{user} && IkiWiki::is_admin($params{user})) {
+               return IkiWiki::SuccessReason->new("user is an admin");
+       }
+       elsif (! defined $params{user}) {
+               return IkiWiki::FailReason->new("not logged in");
+       }
+       else {
+               return IkiWiki::FailReason->new("user is not an admin");
+       }
+}
+
+sub match_ip ($$;@) {
+       shift;
+       my $ip=shift;
+       my %params=@_;
+       
+       if (! exists $params{ip}) {
+               return IkiWiki::FailReason->new("no IP specified");
+       }
+
+       if (defined $params{ip} && lc $params{ip} eq lc $ip) {
+               return IkiWiki::SuccessReason->new("IP is $ip");
+       }
+       else {
+               return IkiWiki::FailReason->new("IP is $params{ip}, not $ip");
+       }
+}

 
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