foo

[git.ikiwiki.info.git] / ikiwiki

diff --git a/ikiwiki b/ikiwiki
index 771590718dea2a84963fab833d318f124290c9c1..9c59c5c3a4aa7f646a48c75bf771ed642b4011ec 100755 (executable)
--- a/ikiwiki
+++ b/ikiwiki
@@ -1,63 +1,116 @@
 #!/usr/bin/perl -T
 #!/usr/bin/perl -T

+$ENV{PATH}="/usr/local/bin:/usr/bin:/bin";

 
 use warnings;
 use strict;
 
 use warnings;
 use strict;

-use File::Find;

 use Memoize;
 use File::Spec;
 use Memoize;
 use File::Spec;

+use HTML::Template;
+use Getopt::Long;

 
 

-$ENV{PATH}="/usr/local/bin:/usr/bin:/bin";
+my (%links, %oldlinks, %oldpagemtime, %renderedfiles, %pagesources);

 
 

-BEGIN {
-       $blosxom::version="is a proper perl module too much to ask?";
-       do "/usr/bin/markdown";
-}
+# Holds global config settings, also used by some modules.
+our %config=( #{{{
+       wiki_file_prune_regexp => qr{((^|/).svn/|\.\.|^\.|\/\.|\.html?$)},
+       wiki_link_regexp => qr/\[\[([^\s]+)\]\]/,
+       wiki_file_regexp => qr/(^[-A-Za-z0-9_.:\/+]+$)/,
+       verbose => 0,
+       wikiname => "wiki",
+       default_pageext => ".mdwn",
+       cgi => 0,
+       svn => 1,
+       url => '',
+       cgiurl => '',
+       historyurl => '',
+       anonok => 0,
+       rebuild => 0,
+       wrapper => undef,
+       wrappermode => undef,
+       srcdir => undef,
+       destdir => undef,
+       templatedir => undef,
+       setup => undef,
+); #}}}

 
 

-my ($srcdir, $destdir, %links, %oldlinks, %oldpagemtime, %renderedfiles,
-    %pagesources);
-my $link=qr/\[\[([^\s]+)\]\]/;
-my $verbose=0;
-my $wikiname="wiki";
+GetOptions( #{{{
+       "setup=s" => \$config{setup},
+       "wikiname=s" => \$config{wikiname},
+       "verbose|v!" => \$config{verbose},
+       "rebuild!" => \$config{rebuild},
+       "wrapper=s" => sub { $config{wrapper}=$_[1] ? $_[1] : "ikiwiki-wrap" },
+       "wrappermode=i" => \$config{wrappermode},
+       "svn!" => \$config{svn},
+       "anonok!" => \$config{anonok},
+       "cgi!" => \$config{cgi},
+       "url=s" => \$config{url},
+       "cgiurl=s" => \$config{cgiurl},
+       "historyurl=s" => \$config{historyurl},
+       "exclude=s@" => sub {
+               $config{wiki_file_prune_regexp}=qr/$config{wiki_file_prune_regexp}|$_[1]/;
+       },
+) || usage();

 
 

-sub usage {
-       die "usage: ikiwiki [options] source dest\n";
+if (! $config{setup}) {
+       usage() unless @ARGV == 3;
+       $config{srcdir} = possibly_foolish_untaint(shift);
+       $config{templatedir} = possibly_foolish_untaint(shift);
+       $config{destdir} = possibly_foolish_untaint(shift);
+       if ($config{cgi} && ! length $config{url}) {
+               error("Must specify url to wiki with --url when using --cgi");
+       }

 }
 }

+#}}}

 
 

-sub error ($) {
+sub usage { #{{{
+       die "usage: ikiwiki [options] source templates dest\n";
+} #}}}
+
+sub error { #{{{
+       if ($config{cgi}) {
+               print "Content-type: text/html\n\n";
+               print misctemplate("Error", "<p>Error: @_</p>");
+       }

        die @_;
        die @_;

-}
+} #}}}

 
 

-sub debug ($) {
-       print "@_\n" if $verbose;
-}
+sub debug ($) { #{{{
+       return unless $config{verbose};
+       if (! $config{cgi}) {
+               print "@_\n";
+       }
+       else {
+               print STDERR "@_\n";
+       }
+} #}}}

 
 

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

        my $page=shift;
        
        return (stat($page))[9];
        my $page=shift;
        
        return (stat($page))[9];

-}
+} #}}}

 
 

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

        my $tainted=shift;
        my ($untainted)=$tainted=~/(.*)/;
        return $untainted;
        my $tainted=shift;
        my ($untainted)=$tainted=~/(.*)/;
        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 ($) {
+sub pagetype ($) { #{{{

        my $page=shift;
        
        if ($page =~ /\.mdwn$/) {
        my $page=shift;
        
        if ($page =~ /\.mdwn$/) {


@@ -66,38 +119,38 @@ sub pagetype ($) {
        else {
                return "unknown";
        }
        else {
                return "unknown";
        }

-}
+} #}}}

 
 

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

        my $file=shift;
 
        my $type=pagetype($file);
        my $page=$file;
        $page=~s/\Q$type\E*$// unless $type eq 'unknown';
        return $page;
        my $file=shift;
 
        my $type=pagetype($file);
        my $page=$file;
        $page=~s/\Q$type\E*$// unless $type eq 'unknown';
        return $page;

-}
+} #}}}

 
 

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

        my $page=shift;
 
        return $page.".html";
        my $page=shift;
 
        return $page.".html";

-}
+} #}}}

 
 

-sub readpage ($) {
-       my $page=shift;
+sub readfile ($) { #{{{
+       my $file=shift;

 
        local $/=undef;
 
        local $/=undef;

-       open (PAGE, "$srcdir/$page") || error("failed to read $page: $!");
-       my $ret=<PAGE>;
-       close PAGE;
+       open (IN, "$file") || error("failed to read $file: $!");
+       my $ret=<IN>;
+       close IN;

        return $ret;
        return $ret;

-}
+} #}}}

 
 

-sub writepage ($$) {
-       my $page=shift;
+sub writefile ($$) { #{{{
+       my $file=shift;

        my $content=shift;
 
        my $content=shift;
 

-       my $dir=dirname("$destdir/$page");
+       my $dir=dirname($file);

        if (! -d $dir) {
                my $d="";
                foreach my $s (split(m!/+!, $dir)) {
        if (! -d $dir) {
                my $d="";
                foreach my $s (split(m!/+!, $dir)) {


@@ -108,26 +161,30 @@ sub writepage ($$) {
                }
        }
        
                }
        }
        

-       open (PAGE, ">$destdir/$page") || error("failed to write $page: $!");
-       print PAGE $content;
-       close PAGE;
-}
+       open (OUT, ">$file") || error("failed to write $file: $!");
+       print OUT $content;
+       close OUT;
+} #}}}

 
 

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

        my $content=shift;
        my $content=shift;

+       my $page=shift;

 
        my @links;
 
        my @links;

-       while ($content =~ /$link/g) {
+       while ($content =~ /(?<!\\)$config{wiki_link_regexp}/g) {

                push @links, lc($1);
        }
                push @links, lc($1);
        }

-       return @links;
-}
+       # Discussion links are a special case since they're not in the text
+       # of the page, but on its template.
+       return @links, "$page/discussion";
+} #}}}

 
 

-# Given a page and the text of a link on the page, determine which existing
-# page that link best points to. Prefers pages under a subdirectory with
-# the same name as the source page, failing that goes down the directory tree
-# to the base looking for matching pages.
-sub bestlink ($$) {
+sub bestlink ($$) { #{{{
+       # Given a page and the text of a link on the page, determine which
+       # existing page that link best points to. Prefers pages under a
+       # subdirectory with the same name as the source page, failing that
+       # goes down the directory tree to the base looking for matching
+       # pages.

        my $page=shift;
        my $link=lc(shift);
        
        my $page=shift;
        my $link=lc(shift);
        


@@ -145,21 +202,29 @@ 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;
        
        $file=~/\.(png|gif|jpg|jpeg)$/;
        my $file=shift;
        
        $file=~/\.(png|gif|jpg|jpeg)$/;

-}
+} #}}}

 
 

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

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

+       my $noimageinline=shift; # don't turn links into inline html images
+       my $forcesubpage=shift; # force a link to a subpage

 
 

-       my $bestlink=bestlink($page, $link);
+       my $bestlink;
+       if (! $forcesubpage) {
+               $bestlink=bestlink($page, $link);
+       }
+       else {
+               $bestlink="$page/".lc($link);
+       }

 
 

-       return $link if $page eq $bestlink;
+       return $link if length $bestlink && $page eq $bestlink;

        
        # TODO BUG: %renderedfiles may not have it, if the linked to page
        # was also added and isn't yet rendered! Note that this bug is
        
        # TODO BUG: %renderedfiles may not have it, if the linked to page
        # was also added and isn't yet rendered! Note that this bug is


@@ -169,40 +234,48 @@ sub htmllink ($$) {
                $bestlink=htmlpage($bestlink);
        }
        if (! grep { $_ eq $bestlink } values %renderedfiles) {
                $bestlink=htmlpage($bestlink);
        }
        if (! grep { $_ eq $bestlink } values %renderedfiles) {

-               return "<a href=\"?\">?</a>$link"
+               return "<a href=\"$config{cgiurl}?do=create&page=$link&from=$page\">?</a>$link"

        }
        
        $bestlink=File::Spec->abs2rel($bestlink, dirname($page));
        
        }
        
        $bestlink=File::Spec->abs2rel($bestlink, dirname($page));
        

-       if (isinlinableimage($bestlink)) {
+       if (! $noimageinline && isinlinableimage($bestlink)) {

                return "<img src=\"$bestlink\">";
        }
        return "<a href=\"$bestlink\">$link</a>";
                return "<img src=\"$bestlink\">";
        }
        return "<a href=\"$bestlink\">$link</a>";

-}
+} #}}}

 
 

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

        my $content=shift;
        my $content=shift;

-       my $file=shift;
+       my $page=shift;

 
 

-       $content =~ s/$link/htmllink(pagename($file), $1)/eg;
+       $content =~ s{(\\?)$config{wiki_link_regexp}}{
+               $1 ? "[[$2]]" : htmllink($page, $2)
+       }eg;

        
        return $content;
        
        return $content;

-}
+} #}}}

 
 

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

        my $type=shift;
        my $content=shift;
        
        my $type=shift;
        my $content=shift;
        

+       if (! $INC{"/usr/bin/markdown"}) {
+               no warnings 'once';
+               $blosxom::version="is a proper perl module too much to ask?";
+               use warnings 'all';
+               do "/usr/bin/markdown";
+       }
+       

        if ($type eq '.mdwn') {
                return Markdown::Markdown($content);
        }
        else {
                error("htmlization of $type not supported");
        }
        if ($type eq '.mdwn') {
                return Markdown::Markdown($content);
        }
        else {
                error("htmlization of $type not supported");
        }

-}
+} #}}}

 
 

-sub linkbacks ($$) {
-       my $content=shift;
+sub backlinks ($) { #{{{

        my $page=shift;
 
        my @links;
        my $page=shift;
 
        my @links;


@@ -220,72 +293,139 @@ sub linkbacks ($$) {
                                $p_trimmed=~s/^\Q$dir\E// &&
                                $page_trimmed=~s/^\Q$dir\E//;
                                       
                                $p_trimmed=~s/^\Q$dir\E// &&
                                $page_trimmed=~s/^\Q$dir\E//;
                                       

-                       push @links, "<a href=\"$href\">$p_trimmed</a>";
+                       push @links, { url => $href, page => $p_trimmed };

                }
        }
 
                }
        }
 

-       $content.="<hr><p>Links: ".join(" ", sort @links)."</p>\n" if @links;
-       return $content;
-}
-
-sub finalize ($$) {
-       my $content=shift;
+       return sort { $a->{page} cmp $b->{page} } @links;
+} #}}}
+       
+sub parentlinks ($) { #{{{

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

-
-       my $title=basename($page);
-       $title=~s/_/ /g;

        
        

+       my @ret;

        my $pagelink="";
        my $path="";
        my $pagelink="";
        my $path="";

+       my $skip=1;

        foreach my $dir (reverse split("/", $page)) {
        foreach my $dir (reverse split("/", $page)) {

-               if (length($pagelink)) {
-                       $pagelink="<a href=\"$path$dir.html\">$dir</a>/ $pagelink";
+               if (! $skip) {
+                       $path.="../";
+                       unshift @ret, { url => "$path$dir.html", page => $dir };

                }
                else {
                }
                else {

-                       $pagelink=$dir;
+                       $skip=0;

                }
                }

-               $path.="../";

        }
        }

-       $path=~s/\.\.\/$/index.html/;
-       $pagelink="<a href=\"$path\">$wikiname</a>/ $pagelink";
+       unshift @ret, { url => length $path ? $path : ".", page => $config{wikiname} };
+       return @ret;
+} #}}}
+
+sub indexlink () { #{{{
+       return "<a href=\"$config{url}\">$config{wikiname}</a>";
+} #}}}
+
+sub finalize ($$) { #{{{
+       my $content=shift;
+       my $page=shift;
+
+       my $title=basename($page);
+       $title=~s/_/ /g;

        
        

-       $content="<html>\n<head><title>$title</title></head>\n<body>\n".
-                 "<h1>$pagelink</h1>\n".
-                 $content.
-                 "</body>\n</html>\n";
+       my $template=HTML::Template->new(blind_cache => 1,
+               filename => "$config{templatedir}/page.tmpl");

        
        

-       return $content;
-}
+       if (length $config{cgiurl}) {
+               $template->param(editurl => "$config{cgiurl}?do=edit&page=$page");
+               if ($config{svn}) {
+                       $template->param(recentchangesurl => "$config{cgiurl}?do=recentchanges");
+               }
+       }

 
 

-sub render ($) {
+       if (length $config{historyurl}) {
+               my $u=$config{historyurl};
+               $u=~s/\[\[\]\]/$pagesources{$page}/g;
+               $template->param(historyurl => $u);
+       }
+       
+       $template->param(
+               title => $title,
+               wikiname => $config{wikiname},
+               parentlinks => [parentlinks($page)],
+               content => $content,
+               backlinks => [backlinks($page)],
+               discussionlink => htmllink($page, "Discussion", 1, 1),
+       );
+       
+       return $template->output;
+} #}}}
+
+sub check_overwrite ($$) { #{{{
+       # Important security check. Make sure to call this before saving
+       # any files to the source directory.
+       my $dest=shift;
+       my $src=shift;
+       
+       if (! exists $renderedfiles{$src} && -e $dest && ! $config{rebuild}) {
+               error("$dest already exists and was rendered from ".
+                       join(" ",(grep { $renderedfiles{$_} eq $dest } keys
+                               %renderedfiles)).
+                       ", before, so not rendering from $src");
+       }
+} #}}}
+
+sub render ($) { #{{{

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

-       my $content=readpage($file);
+       my $content=readfile("$config{srcdir}/$file");

        if ($type ne 'unknown') {
                my $page=pagename($file);
                
        if ($type ne 'unknown') {
                my $page=pagename($file);
                

-               $links{$page}=[findlinks($content)];
+               $links{$page}=[findlinks($content, $page)];

                
                

-               $content=linkify($content, $file);
+               $content=linkify($content, $page);

                $content=htmlize($type, $content);
                $content=htmlize($type, $content);

-               $content=linkbacks($content, $page);

                $content=finalize($content, $page);
                
                $content=finalize($content, $page);
                

-               writepage(htmlpage($page), $content);
+               check_overwrite("$config{destdir}/".htmlpage($page), $page);
+               writefile("$config{destdir}/".htmlpage($page), $content);

                $oldpagemtime{$page}=time;
                $renderedfiles{$page}=htmlpage($page);
        }
        else {
                $links{$file}=[];
                $oldpagemtime{$page}=time;
                $renderedfiles{$page}=htmlpage($page);
        }
        else {
                $links{$file}=[];

-               writepage($file, $content);
+               check_overwrite("$config{destdir}/$file", $file);
+               writefile("$config{destdir}/$file", $content);

                $oldpagemtime{$file}=time;
                $renderedfiles{$file}=$file;
        }
                $oldpagemtime{$file}=time;
                $renderedfiles{$file}=$file;
        }

-}
+} #}}}

 
 

-sub loadindex () {
-       open (IN, "$srcdir/.index") || return;
+sub lockwiki () { #{{{
+       # Take an exclusive lock on the wiki to prevent multiple concurrent
+       # run issues. The lock will be dropped on program exit.
+       if (! -d "$config{srcdir}/.ikiwiki") {
+               mkdir("$config{srcdir}/.ikiwiki");
+       }
+       open(WIKILOCK, ">$config{srcdir}/.ikiwiki/lockfile") || error ("cannot write to lockfile: $!");
+       if (! flock(WIKILOCK, 2 | 4)) {
+               debug("wiki seems to be locked, waiting for lock");
+               my $wait=600; # arbitrary, but don't hang forever to 
+                             # prevent process pileup
+               for (1..600) {
+                       return if flock(WIKILOCK, 2 | 4);
+                       sleep 1;
+               }
+               error("wiki is locked; waited $wait seconds without lock being freed (possible stuck process or stale lock?)");
+       }
+} #}}}
+
+sub unlockwiki () { #{{{
+       close WIKILOCK;
+} #}}}
+
+sub loadindex () { #{{{
+       open (IN, "$config{srcdir}/.ikiwiki/index") || return;

        while (<IN>) {
                $_=possibly_foolish_untaint($_);
                chomp;
        while (<IN>) {
                $_=possibly_foolish_untaint($_);
                chomp;


@@ -298,19 +438,174 @@ sub loadindex () {
                $renderedfiles{$page}=$rendered;
        }
        close IN;
                $renderedfiles{$page}=$rendered;
        }
        close IN;

-}      
+} #}}}

 
 

-sub saveindex () {
-       open (OUT, ">$srcdir/.index") || error("cannot write to .index: $!");
+sub saveindex () { #{{{
+       if (! -d "$config{srcdir}/.ikiwiki") {
+               mkdir("$config{srcdir}/.ikiwiki");
+       }
+       open (OUT, ">$config{srcdir}/.ikiwiki/index") || error("cannot write to index: $!");

        foreach my $page (keys %oldpagemtime) {
        foreach my $page (keys %oldpagemtime) {

-       print OUT "$oldpagemtime{$page} $pagesources{$page} $renderedfiles{$page} ".
-                 join(" ", @{$links{$page}})."\n"
-                       if $oldpagemtime{$page};
+               print OUT "$oldpagemtime{$page} $pagesources{$page} $renderedfiles{$page} ".
+                       join(" ", @{$links{$page}})."\n"
+                               if $oldpagemtime{$page};

        }
        close OUT;
        }
        close OUT;

-}
+} #}}}

 
 

-sub prune ($) {
+sub rcs_update () { #{{{
+       if (-d "$config{srcdir}/.svn") {
+               if (system("svn", "update", "--quiet", $config{srcdir}) != 0) {
+                       warn("svn update failed\n");
+               }
+       }
+} #}}}
+
+sub rcs_prepedit ($) { #{{{
+       # Prepares to edit a file under revision control. Returns a token
+       # that must be passed into rcs_commit when the file is ready
+       # for committing.
+       # The file is relative to the srcdir.
+       my $file=shift;
+       
+       if (-d "$config{srcdir}/.svn") {
+               # For subversion, return the revision of the file when
+               # editing begins.
+               my $rev=svn_info("Revision", "$config{srcdir}/$file");
+               return defined $rev ? $rev : "";
+       }
+} #}}}
+
+sub rcs_commit ($$$) { #{{{
+       # Tries to commit the page; returns undef on _success_ and
+       # a version of the page with the rcs's conflict markers on failure.
+       # The file is relative to the srcdir.
+       my $file=shift;
+       my $message=shift;
+       my $rcstoken=shift;
+
+       if (-d "$config{srcdir}/.svn") {
+               # Check to see if the page has been changed by someone
+               # else since rcs_prepedit was called.
+               my ($oldrev)=$rcstoken=~/^([0-9]+)$/; # untaint
+               my $rev=svn_info("Revision", "$config{srcdir}/$file");
+               if ($rev != $oldrev) {
+                       # Merge their changes into the file that we've
+                       # changed.
+                       chdir($config{srcdir}); # svn merge wants to be here
+                       if (system("svn", "merge", "--quiet", "-r$oldrev:$rev",
+                                  "$config{srcdir}/$file") != 0) {
+                               warn("svn merge -r$oldrev:$rev failed\n");
+                       }
+               }
+
+               if (system("svn", "commit", "--quiet", "-m",
+                          possibly_foolish_untaint($message),
+                          "$config{srcdir}/$file") != 0) {
+                       my $conflict=readfile("$config{srcdir}/$file");
+                       if (system("svn", "revert", "--quiet", "$config{srcdir}/$file") != 0) {
+                               warn("svn revert failed\n");
+                       }
+                       return $conflict;
+               }
+       }
+       return undef # success
+} #}}}
+
+sub rcs_add ($) { #{{{
+       # filename is relative to the root of the srcdir
+       my $file=shift;
+
+       if (-d "$config{srcdir}/.svn") {
+               my $parent=dirname($file);
+               while (! -d "$config{srcdir}/$parent/.svn") {
+                       $file=$parent;
+                       $parent=dirname($file);
+               }
+               
+               if (system("svn", "add", "--quiet", "$config{srcdir}/$file") != 0) {
+                       warn("svn add failed\n");
+               }
+       }
+} #}}}
+
+sub svn_info ($$) { #{{{
+       my $field=shift;
+       my $file=shift;
+
+       my $info=`LANG=C svn info $file`;
+       my ($ret)=$info=~/^$field: (.*)$/m;
+       return $ret;
+} #}}}
+
+sub rcs_recentchanges ($) { #{{{
+       my $num=shift;
+       my @ret;
+       
+       eval q{use CGI 'escapeHTML'};
+       eval q{use Date::Parse};
+       eval q{use Time::Duration};
+       
+       if (-d "$config{srcdir}/.svn") {
+               my $svn_url=svn_info("URL", $config{srcdir});
+
+               # FIXME: currently assumes that the wiki is somewhere
+               # under trunk in svn, doesn't support other layouts.
+               my ($svn_base)=$svn_url=~m!(/trunk(?:/.*)?)$!;
+               
+               my $div=qr/^--------------------+$/;
+               my $infoline=qr/^r(\d+)\s+\|\s+([^\s]+)\s+\|\s+(\d+-\d+-\d+\s+\d+:\d+:\d+\s+[-+]?\d+).*/;
+               my $state='start';
+               my ($rev, $user, $when, @pages, @message);
+               foreach (`LANG=C svn log --limit $num -v '$svn_url'`) {
+                       chomp;
+                       if ($state eq 'start' && /$div/) {
+                               $state='header';
+                       }
+                       elsif ($state eq 'header' && /$infoline/) {
+                               $rev=$1;
+                               $user=$2;
+                               $when=concise(ago(time - str2time($3)));
+                       }
+                       elsif ($state eq 'header' && /^\s+[A-Z]\s+\Q$svn_base\E\/(.+)$/) {
+                               push @pages, { link => htmllink("", pagename($1), 1) }
+                                       if length $1;
+                       }
+                       elsif ($state eq 'header' && /^$/) {
+                               $state='body';
+                       }
+                       elsif ($state eq 'body' && /$div/) {
+                               my $committype="web";
+                               if (defined $message[0] &&
+                                   $message[0]->{line}=~/^web commit by (\w+):?(.*)/) {
+                                       $user="$1";
+                                       $message[0]->{line}=$2;
+                               }
+                               else {
+                                       $committype="svn";
+                               }
+                               
+                               push @ret, { rev => $rev,
+                                       user => htmllink("", $user, 1),
+                                       committype => $committype,
+                                       when => $when, message => [@message],
+                                       pages => [@pages] } if @pages;
+                               return @ret if @ret >= $num;
+                               
+                               $state='header';
+                               $rev=$user=$when=undef;
+                               @pages=@message=();
+                       }
+                       elsif ($state eq 'body') {
+                               push @message, {line => escapeHTML($_)},
+                       }
+               }
+       }
+
+       return @ret;
+} #}}}
+
+sub prune ($) { #{{{

        my $file=shift;
 
        unlink($file);
        my $file=shift;
 
        unlink($file);


@@ -318,31 +613,34 @@ sub prune ($) {
        while (rmdir($dir)) {
                $dir=dirname($dir);
        }
        while (rmdir($dir)) {
                $dir=dirname($dir);
        }

-}
+} #}}}

 
 

-sub refresh () {
-       # Find existing pages.
+sub refresh () { #{{{
+       # find existing pages

        my %exists;
        my @files;
        my %exists;
        my @files;

+       eval q{use File::Find};

        find({
                no_chdir => 1,
                wanted => sub {
        find({
                no_chdir => 1,
                wanted => sub {

-                       if (/\/\.svn\//) {
+                       if (/$config{wiki_file_prune_regexp}/) {
+                               no warnings 'once';

                                $File::Find::prune=1;
                                $File::Find::prune=1;

+                               use warnings "all";

                        }
                        }

-                       elsif (! -d $_ && ! /\.html$/ && ! /\/\./) {
-                               my ($f)=/(^[-A-Za-z0-9_.:\/+]+$)/; # untaint
+                       elsif (! -d $_ && ! -l $_) {
+                               my ($f)=/$config{wiki_file_regexp}/; # untaint

                                if (! defined $f) {
                                        warn("skipping bad filename $_\n");
                                }
                                else {
                                if (! defined $f) {
                                        warn("skipping bad filename $_\n");
                                }
                                else {

-                                       $f=~s/^\Q$srcdir\E\/?//;
+                                       $f=~s/^\Q$config{srcdir}\E\/?//;

                                        push @files, $f;
                                        $exists{pagename($f)}=1;
                                }
                        }
                },
                                        push @files, $f;
                                        $exists{pagename($f)}=1;
                                }
                        }
                },

-       }, $srcdir);
+       }, $config{srcdir});

 
        my %rendered;
 
 
        my %rendered;
 


@@ -361,8 +659,8 @@ sub refresh () {
        foreach my $page (keys %oldpagemtime) {
                if (! $exists{$page}) {
                        debug("removing old page $page");
        foreach my $page (keys %oldpagemtime) {
                if (! $exists{$page}) {
                        debug("removing old page $page");

-                       push @del, $renderedfiles{$page};
-                       prune($destdir."/".$renderedfiles{$page});
+                       push @del, $pagesources{$page};
+                       prune($config{destdir}."/".$renderedfiles{$page});

                        delete $renderedfiles{$page};
                        $oldpagemtime{$page}=0;
                        delete $pagesources{$page};
                        delete $renderedfiles{$page};
                        $oldpagemtime{$page}=0;
                        delete $pagesources{$page};


@@ -374,7 +672,7 @@ sub refresh () {
                my $page=pagename($file);
                
                if (! exists $oldpagemtime{$page} ||
                my $page=pagename($file);
                
                if (! exists $oldpagemtime{$page} ||

-                   mtime("$srcdir/$file") > $oldpagemtime{$page}) {
+                   mtime("$config{srcdir}/$file") > $oldpagemtime{$page}) {

                        debug("rendering changed file $file");
                        render($file);
                        $rendered{$file}=1;
                        debug("rendering changed file $file");
                        render($file);
                        $rendered{$file}=1;


@@ -403,18 +701,17 @@ FILE:             foreach my $file (@files) {
                }
        }
 
                }
        }
 

-       # handle linkbacks; if a page has added/removed links, update the
+       # handle backlinks; if a page has added/removed links, update the

        # pages it links to
        # TODO: inefficient; pages may get rendered above and again here;
        # pages it links to
        # TODO: inefficient; pages may get rendered above and again here;

-       # problem is the linkbacks could be wrong in the first pass render
+       # problem is the backlinks could be wrong in the first pass render

        # above
        if (%rendered) {
                my %linkchanged;
                foreach my $file (keys %rendered, @del) {
                        my $page=pagename($file);
                        if (exists $links{$page}) {
        # above
        if (%rendered) {
                my %linkchanged;
                foreach my $file (keys %rendered, @del) {
                        my $page=pagename($file);
                        if (exists $links{$page}) {

-                               foreach my $link (@{$links{$page}}) {
-                                       $link=bestlink($page, $link);
+                               foreach my $link (map { bestlink($page, $_) } @{$links{$page}}) {

                                        if (length $link &&
                                            ! exists $oldlinks{$page} ||
                                            ! grep { $_ eq $link } @{$oldlinks{$page}}) {
                                        if (length $link &&
                                            ! exists $oldlinks{$page} ||
                                            ! grep { $_ eq $link } @{$oldlinks{$page}}) {


@@ -423,8 +720,7 @@ FILE:               foreach my $file (@files) {
                                }
                        }
                        if (exists $oldlinks{$page}) {
                                }
                        }
                        if (exists $oldlinks{$page}) {

-                               foreach my $link (@{$oldlinks{$page}}) {
-                                       $link=bestlink($page, $link);
+                               foreach my $link (map { bestlink($page, $_) } @{$oldlinks{$page}}) {

                                        if (length $link &&
                                            ! exists $links{$page} ||
                                            ! grep { $_ eq $link } @{$links{$page}}) {
                                        if (length $link &&
                                            ! exists $links{$page} ||
                                            ! grep { $_ eq $link } @{$links{$page}}) {


@@ -436,83 +732,570 @@ FILE:            foreach my $file (@files) {
                foreach my $link (keys %linkchanged) {
                        my $linkfile=$pagesources{$link};
                        if (defined $linkfile) {
                foreach my $link (keys %linkchanged) {
                        my $linkfile=$pagesources{$link};
                        if (defined $linkfile) {

-                               debug("rendering $linkfile, to update its linkbacks");
+                               debug("rendering $linkfile, to update its backlinks");

                                render($linkfile);
                        }
                }
        }
                                render($linkfile);
                        }
                }
        }

-}
-
-# Generates a C wrapper program for running ikiwiki in a specific way.
-# The wrapper may be safely made suid.
-sub gen_wrapper ($$) {
-       my ($offline, $rebuild)=@_;
+} #}}}

 
 

-       eval {use Cwd 'abs_path'};
-       $srcdir=abs_path($srcdir);
-       $destdir=abs_path($destdir);
+sub gen_wrapper (@) { #{{{
+       my %config=(@_);
+       eval q{use Cwd 'abs_path'};
+       $config{srcdir}=abs_path($config{srcdir});
+       $config{destdir}=abs_path($config{destdir});

        my $this=abs_path($0);
        if (! -x $this) {
                error("$this doesn't seem to be executable");
        }
        my $this=abs_path($0);
        if (! -x $this) {
                error("$this doesn't seem to be executable");
        }

+
+       if ($config{setup}) {
+               error("cannot create a wrapper that uses a setup file");
+       }

        
        

-       my $call=qq{"$this", "$this", "$srcdir", "$destdir", "--wikiname=$wikiname"};
-       $call.=', "--verbose"' if $verbose;
-       $call.=', "--rebuild"' if $rebuild;
-       $call.=', "--offline"' if $offline;
+       my @params=($config{srcdir}, $config{templatedir}, $config{destdir},
+               "--wikiname=$config{wikiname}");
+       push @params, "--verbose" if $config{verbose};
+       push @params, "--rebuild" if $config{rebuild};
+       push @params, "--nosvn" if !$config{svn};
+       push @params, "--cgi" if $config{cgi};
+       push @params, "--url=$config{url}" if length $config{url};
+       push @params, "--cgiurl=$config{cgiurl}" if length $config{cgiurl};
+       push @params, "--historyurl=$config{historyurl}" if length $config{historyurl};
+       push @params, "--anonok" if $config{anonok};
+       my $params=join(" ", @params);
+       my $call='';
+       foreach my $p ($this, $this, @params) {
+               $call.=qq{"$p", };
+       }
+       $call.="NULL";
+       
+       my @envsave;
+       push @envsave, qw{REMOTE_ADDR QUERY_STRING REQUEST_METHOD REQUEST_URI
+                      CONTENT_TYPE CONTENT_LENGTH GATEWAY_INTERFACE
+                      HTTP_COOKIE} if $config{cgi};
+       my $envsave="";
+       foreach my $var (@envsave) {
+               $envsave.=<<"EOF"
+       if ((s=getenv("$var")))
+               asprintf(&newenviron[i++], "%s=%s", "$var", s);
+EOF
+       }

        
        open(OUT, ">ikiwiki-wrap.c") || error("failed to write ikiwiki-wrap.c: $!");;
        print OUT <<"EOF";
        
        open(OUT, ">ikiwiki-wrap.c") || error("failed to write ikiwiki-wrap.c: $!");;
        print OUT <<"EOF";

-/* A suid wraper for ikiwiki */
+/* A wrapper for ikiwiki, can be safely made suid. */
+#define _GNU_SOURCE

 #include <stdio.h>
 #include <unistd.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <unistd.h>
 #include <stdlib.h>

+#include <string.h>

 
 

-int main (void) {
-       clearenv();
-       execl($call, NULL);
+extern char **environ;
+
+int main (int argc, char **argv) {
+       /* Sanitize environment. */
+       char *s;
+       char *newenviron[$#envsave+3];
+       int i=0;
+$envsave
+       newenviron[i++]="HOME=$ENV{HOME}";
+       newenviron[i]=NULL;
+       environ=newenviron;
+
+       if (argc == 2 && strcmp(argv[1], "--params") == 0) {
+               printf("$params\\n");
+               exit(0);
+       }
+       
+       execl($call);

        perror("failed to run $this");
        exit(1);
 }
 EOF
        close OUT;
        perror("failed to run $this");
        exit(1);
 }
 EOF
        close OUT;

-       if (system("gcc", "ikiwiki-wrap.c", "-o", "ikiwiki-wrap") != 0) {
+       if (system("gcc", "ikiwiki-wrap.c", "-o", possibly_foolish_untaint($config{wrapper})) != 0) {

                error("failed to compile ikiwiki-wrap.c");
        }
        unlink("ikiwiki-wrap.c");
                error("failed to compile ikiwiki-wrap.c");
        }
        unlink("ikiwiki-wrap.c");

-       print "successfully generated ikiwiki-wrap\n";
-       exit 0;
-}
+       if (defined $config{wrappermode} &&
+           ! chmod(oct($config{wrappermode}), possibly_foolish_untaint($config{wrapper}))) {
+               error("chmod $config{wrapper}: $!");
+       }
+       print "successfully generated $config{wrapper}\n";
+} #}}}
+               
+sub misctemplate ($$) { #{{{
+       my $title=shift;
+       my $pagebody=shift;
+       
+       my $template=HTML::Template->new(
+               filename => "$config{templatedir}/misc.tmpl"
+       );
+       $template->param(
+               title => $title,
+               indexlink => indexlink(),
+               wikiname => $config{wikiname},
+               pagebody => $pagebody,
+       );
+       return $template->output;
+}#}}}

 
 

-sub update () {
-       if (-d "$srcdir/.svn") {
-               if (system("svn", "update", "--quiet", $srcdir) != 0) {
-                       warn("svn update failed\n");
+sub cgi_recentchanges ($) { #{{{
+       my $q=shift;
+       
+       my $template=HTML::Template->new(
+               filename => "$config{templatedir}/recentchanges.tmpl"
+       );
+       $template->param(
+               title => "RecentChanges",
+               indexlink => indexlink(),
+               wikiname => $config{wikiname},
+               changelog => [rcs_recentchanges(100)],
+       );
+       print $q->header, $template->output;
+} #}}}
+
+sub userinfo_get ($$) { #{{{
+       my $user=shift;
+       my $field=shift;
+
+       eval q{use Storable};
+       my $userdata=eval{ Storable::lock_retrieve("$config{srcdir}/.ikiwiki/userdb") };
+       if (! defined $userdata || ! ref $userdata || 
+           ! exists $userdata->{$user} || ! ref $userdata->{$user}) {
+               return "";
+       }
+       return $userdata->{$user}->{$field};
+} #}}}
+
+sub userinfo_set ($$) { #{{{
+       my $user=shift;
+       my $info=shift;
+       
+       eval q{use Storable};
+       my $userdata=eval{ Storable::lock_retrieve("$config{srcdir}/.ikiwiki/userdb") };
+       if (! defined $userdata || ! ref $userdata) {
+               $userdata={};
+       }
+       $userdata->{$user}=$info;
+       my $oldmask=umask(077);
+       my $ret=Storable::lock_store($userdata, "$config{srcdir}/.ikiwiki/userdb");
+       umask($oldmask);
+       return $ret;
+} #}}}
+
+sub cgi_signin ($$) { #{{{
+       my $q=shift;
+       my $session=shift;
+
+       eval q{use CGI::FormBuilder};
+       my $form = CGI::FormBuilder->new(
+               title => "$config{wikiname} signin",
+               fields => [qw(do page from name password confirm_password email)],
+               header => 1,
+               method => 'POST',
+               validate => {
+                       confirm_password => {
+                               perl => q{eq $form->field("password")},
+                       },
+                       email => 'EMAIL',
+               },
+               required => 'NONE',
+               javascript => 0,
+               params => $q,
+               action => $q->request_uri,
+               header => 0,
+               template => (-e "$config{templatedir}/signin.tmpl" ?
+                             "$config{templatedir}/signin.tmpl" : "")
+       );
+       
+       $form->field(name => "name", required => 0);
+       $form->field(name => "do", type => "hidden");
+       $form->field(name => "page", type => "hidden");
+       $form->field(name => "from", type => "hidden");
+       $form->field(name => "password", type => "password", required => 0);
+       $form->field(name => "confirm_password", type => "password", required => 0);
+       $form->field(name => "email", required => 0);
+       if ($q->param("do") ne "signin") {
+               $form->text("You need to log in before you can edit pages.");
+       }
+       
+       if ($form->submitted) {
+               # Set required fields based on how form was submitted.
+               my %required=(
+                       "Login" => [qw(name password)],
+                       "Register" => [qw(name password confirm_password email)],
+                       "Mail Password" => [qw(name)],
+               );
+               foreach my $opt (@{$required{$form->submitted}}) {
+                       $form->field(name => $opt, required => 1);
+               }
+       
+               # Validate password differently depending on how
+               # form was submitted.
+               if ($form->submitted eq 'Login') {
+                       $form->field(
+                               name => "password",
+                               validate => sub {
+                                       length $form->field("name") &&
+                                       shift eq userinfo_get($form->field("name"), 'password');
+                               },
+                       );
+                       $form->field(name => "name", validate => '/^\w+$/');
+               }
+               else {
+                       $form->field(name => "password", validate => 'VALUE');
+               }
+               # And make sure the entered name exists when logging
+               # in or sending email, and does not when registering.
+               if ($form->submitted eq 'Register') {
+                       $form->field(
+                               name => "name",
+                               validate => sub {
+                                       my $name=shift;
+                                       length $name &&
+                                       ! userinfo_get($name, "regdate");
+                               },
+                       );
+               }
+               else {
+                       $form->field(
+                               name => "name",
+                               validate => sub {
+                                       my $name=shift;
+                                       length $name &&
+                                       userinfo_get($name, "regdate");
+                               },
+                       );
+               }
+       }
+       else {
+               # First time settings.
+               $form->field(name => "name", comment => "use FirstnameLastName");
+               $form->field(name => "confirm_password", comment => "(only needed");
+               $form->field(name => "email",            comment => "for registration)");
+               if ($session->param("name")) {
+                       $form->field(name => "name", value => $session->param("name"));

                }
        }
                }
        }

-}

 
 

-my $rebuild=0;
-my $offline=0;
-my $gen_wrapper=0;
-if (grep /^-/, @ARGV) {
-       eval {use Getopt::Long};
-       GetOptions(
-               "wikiname=s" => \$wikiname,
-               "verbose|v" => \$verbose,
-               "rebuild" => \$rebuild,
-               "gen-wrapper" => \$gen_wrapper,
-               "offline" => \$offline,
-       ) || usage();
-}
-usage() unless @ARGV == 2;
-($srcdir) = possibly_foolish_untaint(shift);
-($destdir) = possibly_foolish_untaint(shift);
+       if ($form->submitted && $form->validate) {
+               if ($form->submitted eq 'Login') {
+                       $session->param("name", $form->field("name"));
+                       if (defined $form->field("do") && 
+                           $form->field("do") ne 'signin') {
+                               print $q->redirect(
+                                       "$config{cgiurl}?do=".$form->field("do").
+                                       "&page=".$form->field("page").
+                                       "&from=".$form->field("from"));;
+                       }
+                       else {
+                               print $q->redirect($config{url});
+                       }
+               }
+               elsif ($form->submitted eq 'Register') {
+                       my $user_name=$form->field('name');
+                       if (userinfo_set($user_name, {
+                                          'email' => $form->field('email'),
+                                          'password' => $form->field('password'),
+                                          'regdate' => time
+                                        })) {
+                               $form->field(name => "confirm_password", type => "hidden");
+                               $form->field(name => "email", type => "hidden");
+                               $form->text("Registration successful. Now you can Login.");
+                               print $session->header();
+                               print misctemplate($form->title, $form->render(submit => ["Login"]));
+                       }
+                       else {
+                               error("Error saving registration.");
+                       }
+               }
+               elsif ($form->submitted eq 'Mail Password') {
+                       my $user_name=$form->field("name");
+                       my $template=HTML::Template->new(
+                               filename => "$config{templatedir}/passwordmail.tmpl"
+                       );
+                       $template->param(
+                               user_name => $user_name,
+                               user_password => userinfo_get($user_name, "password"),
+                               wikiurl => $config{url},
+                               wikiname => $config{wikiname},
+                               REMOTE_ADDR => $ENV{REMOTE_ADDR},
+                       );
+                       
+                       eval q{use Mail::Sendmail};
+                       my ($fromhost) = $config{cgiurl} =~ m!/([^/]+)!;
+                       sendmail(
+                               To => userinfo_get($user_name, "email"),
+                               From => "$config{wikiname} admin <".(getpwuid($>))[0]."@".$fromhost.">",
+                               Subject => "$config{wikiname} information",
+                               Message => $template->output,
+                       ) or error("Failed to send mail");
+                       
+                       $form->text("Your password has been emailed to you.");
+                       $form->field(name => "name", required => 0);
+                       print $session->header();
+                       print misctemplate($form->title, $form->render(submit => ["Login", "Register", "Mail Password"]));
+               }
+       }
+       else {
+               print $session->header();
+               print misctemplate($form->title, $form->render(submit => ["Login", "Register", "Mail Password"]));
+       }
+} #}}}
+
+sub cgi_editpage ($$) { #{{{
+       my $q=shift;
+       my $session=shift;

 
 

-gen_wrapper($offline, $rebuild) if $gen_wrapper;
+       eval q{use CGI::FormBuilder};
+       my $form = CGI::FormBuilder->new(
+               fields => [qw(do rcsinfo from page content comments)],
+               header => 1,
+               method => 'POST',
+               validate => {
+                       content => '/.+/',
+               },
+               required => [qw{content}],
+               javascript => 0,
+               params => $q,
+               action => $q->request_uri,
+               table => 0,
+               template => "$config{templatedir}/editpage.tmpl"
+       );
+       my @buttons=("Save Page", "Preview", "Cancel");
+       
+       my ($page)=$form->param('page')=~/$config{wiki_file_regexp}/;
+       if (! defined $page || ! length $page || $page ne $q->param('page') ||
+           $page=~/$config{wiki_file_prune_regexp}/ || $page=~/^\//) {
+               error("bad page name");
+       }
+       $page=lc($page);
+       
+       my $file=$page.$config{default_pageext};
+       my $newfile=1;
+       if (exists $pagesources{lc($page)}) {
+               $file=$pagesources{lc($page)};
+               $newfile=0;
+       }
+
+       $form->field(name => "do", type => 'hidden');
+       $form->field(name => "from", type => 'hidden');
+       $form->field(name => "rcsinfo", type => 'hidden');
+       $form->field(name => "page", value => "$page", force => 1);
+       $form->field(name => "comments", type => "text", size => 80);
+       $form->field(name => "content", type => "textarea", rows => 20,
+               cols => 80);
+       $form->tmpl_param("can_commit", $config{svn});
+       $form->tmpl_param("indexlink", indexlink());
+       $form->tmpl_param("helponformattinglink",
+               htmllink("", "HelpOnFormatting", 1));
+       if (! $form->submitted) {
+               $form->field(name => "rcsinfo", value => rcs_prepedit($file),
+                       force => 1);
+       }
+       
+       if ($form->submitted eq "Cancel") {
+               print $q->redirect("$config{url}/".htmlpage($page));
+               return;
+       }
+       elsif ($form->submitted eq "Preview") {
+               $form->tmpl_param("page_preview",
+                       htmlize($config{default_pageext},
+                               linkify($form->field('content'), $page)));
+       }
+       else {
+               $form->tmpl_param("page_preview", "");
+       }
+       $form->tmpl_param("page_conflict", "");
+       
+       if (! $form->submitted || $form->submitted eq "Preview" || 
+           ! $form->validate) {
+               if ($form->field("do") eq "create") {
+                       if (exists $pagesources{lc($page)}) {
+                               # hmm, someone else made the page in the
+                               # meantime?
+                               print $q->redirect("$config{url}/".htmlpage($page));
+                               return;
+                       }
+                       
+                       my @page_locs;
+                       my $best_loc;
+                       my ($from)=$form->param('from')=~/$config{wiki_file_regexp}/;
+                       if (! defined $from || ! length $from ||
+                           $from ne $form->param('from') ||
+                           $from=~/$config{wiki_file_prune_regexp}/ || $from=~/^\//) {
+                               @page_locs=$best_loc=$page;
+                       }
+                       else {
+                               my $dir=$from."/";
+                               $dir=~s![^/]+/$!!;
+                               push @page_locs, $dir.$page;
+                               push @page_locs, "$from/$page";
+                               $best_loc="$from/$page";
+                               while (length $dir) {
+                                       $dir=~s![^/]+/$!!;
+                                       push @page_locs, $dir.$page;
+                               }
+
+                               @page_locs = grep { ! exists
+                                       $pagesources{lc($_)} } @page_locs;
+                       }
+
+                       $form->tmpl_param("page_select", 1);
+                       $form->field(name => "page", type => 'select',
+                               options => \@page_locs, value => $best_loc);
+                       $form->title("creating $page");
+               }
+               elsif ($form->field("do") eq "edit") {
+                       if (! defined $form->field('content') || 
+                           ! length $form->field('content')) {
+                               my $content="";
+                               if (exists $pagesources{lc($page)}) {
+                                               $content=readfile("$config{srcdir}/$pagesources{lc($page)}");
+                                       $content=~s/\n/\r\n/g;
+                               }
+                               $form->field(name => "content", value => $content,
+                                       force => 1);
+                       }
+                       $form->tmpl_param("page_select", 0);
+                       $form->field(name => "page", type => 'hidden');
+                       $form->title("editing $page");
+               }
+               
+               print $form->render(submit => \@buttons);
+       }
+       else {
+               # save page
+               my $content=$form->field('content');
+               $content=~s/\r\n/\n/g;
+               $content=~s/\r/\n/g;
+               writefile("$config{srcdir}/$file", $content);
+               
+               my $message="web commit ";
+               if ($session->param("name")) {
+                       $message.="by ".$session->param("name");
+               }
+               else {
+                       $message.="from $ENV{REMOTE_ADDR}";
+               }
+               if (defined $form->field('comments') &&
+                   length $form->field('comments')) {
+                       $message.=": ".$form->field('comments');
+               }
+               
+               if ($config{svn}) {
+                       if ($newfile) {
+                               rcs_add($file);
+                       }
+                       # prevent deadlock with post-commit hook
+                       unlockwiki();
+                       # presumably the commit will trigger an update
+                       # of the wiki
+                       my $conflict=rcs_commit($file, $message,
+                               $form->field("rcsinfo"));
+               
+                       if (defined $conflict) {
+                               $form->field(name => "rcsinfo", value => rcs_prepedit($file),
+                                       force => 1);
+                               $form->tmpl_param("page_conflict", 1);
+                               $form->field("content", value => $conflict, force => 1);
+                               $form->field("do", "edit)");
+                               $form->tmpl_param("page_select", 0);
+                               $form->field(name => "page", type => 'hidden');
+                               $form->title("editing $page");
+                               print $form->render(submit => \@buttons);
+                               return;
+                       }
+               }
+               else {
+                       loadindex();
+                       refresh();
+                       saveindex();
+               }
+               
+               # The trailing question mark tries to avoid broken
+               # caches and get the most recent version of the page.
+               print $q->redirect("$config{url}/".htmlpage($page)."?updated");
+       }
+} #}}}
+
+sub cgi () { #{{{
+       eval q{use CGI};
+       eval q{use CGI::Session};
+       
+       my $q=CGI->new;
+       
+       my $do=$q->param('do');
+       if (! defined $do || ! length $do) {
+               error("\"do\" parameter missing");
+       }
+       
+       # This does not need a session.
+       if ($do eq 'recentchanges') {
+               cgi_recentchanges($q);
+               return;
+       }
+       
+       CGI::Session->name("ikiwiki_session");
+
+       my $oldmask=umask(077);
+       my $session = CGI::Session->new("driver:db_file", $q,
+               { FileName => "$config{srcdir}/.ikiwiki/sessions.db" });
+       umask($oldmask);
+       
+       # Everything below this point needs the user to be signed in.
+       if ((! $config{anonok} && ! defined $session->param("name") ||
+               ! userinfo_get($session->param("name"), "regdate")) || $do eq 'signin') {
+               cgi_signin($q, $session);
+       
+               # Force session flush with safe umask.
+               my $oldmask=umask(077);
+               $session->flush;
+               umask($oldmask);
+               
+               return;
+       }
+       
+       if ($do eq 'create' || $do eq 'edit') {
+               cgi_editpage($q, $session);
+       }
+       else {
+               error("unknown do parameter");
+       }
+} #}}}
+
+sub setup () { # {{{
+       my $setup=possibly_foolish_untaint($config{setup});
+       delete $config{setup};
+       open (IN, $setup) || error("read $setup: $!\n");
+       local $/=undef;
+       my $code=<IN>;
+       ($code)=$code=~/(.*)/s;
+       close IN;
+
+       eval $code;
+       error($@) if $@;
+       exit;
+} #}}}
+
+# main {{{
+lockwiki();
+setup() if $config{setup};
+if ($config{wrapper}) {
+       gen_wrapper(%config);
+       exit;
+}

 memoize('pagename');
 memoize('bestlink');
 memoize('pagename');
 memoize('bestlink');

-update() unless $offline;
-loadindex() unless $rebuild;
-refresh();
-saveindex();
+loadindex() unless $config{rebuild};
+if ($config{cgi}) {
+       cgi();
+}
+else {
+       rcs_update() if $config{svn};
+       refresh();
+       saveindex();
+}
+#}}}