recentchanges

[git.ikiwiki.info.git] / ikiwiki

diff --git a/ikiwiki b/ikiwiki
index eba94cba247190d0fae6c2b93d67f8cb97e80925..debf43a54c764bd7af929f814bd64dc9a8f1e31e 100755 (executable)
--- a/ikiwiki
+++ b/ikiwiki
@@ -6,26 +6,39 @@ use File::Find;
 use Memoize;
 use File::Spec;
 
 use Memoize;
 use File::Spec;
 

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

 BEGIN {
        $blosxom::version="is a proper perl module too much to ask?";
        do "/usr/bin/markdown";
 }
 
 BEGIN {
        $blosxom::version="is a proper perl module too much to ask?";
        do "/usr/bin/markdown";
 }
 

-memoize('pagename');
-memoize('bestlink');
-
-my ($srcdir)= shift =~ /(.*)/; # untaint
-my ($destdir)= shift =~ /(.*)/; # untaint
-my $link=qr/\[\[([^\s]+)\]\]/;
-my $verbose=1;
+my ($srcdir, $destdir, %links, %oldlinks, %oldpagemtime, %renderedfiles,
+    %pagesources);
+my $wiki_link_regexp=qr/\[\[([^\s]+)\]\]/;
+my $wiki_file_regexp=qr/(^[-A-Za-z0-9_.:\/+]+$)/;
+my $wiki_file_prune_regexp=qr!((^|/).svn/|\.\.|^\.|\/\.|\.html?$)!;
+my $verbose=0;

 my $wikiname="wiki";
 my $wikiname="wiki";

-
-my %links;
-my %oldpagemtime;
-my %renderedfiles;
+my $default_pagetype=".mdwn";
+my $cgi=0;
+my $url="";
+my $cgiurl="";
+my $svn=1;
+
+sub usage {
+       die "usage: ikiwiki [options] source dest\n";
+}

 
 sub error ($) {
 
 sub error ($) {

-       die @_;
+       if ($cgi) {
+               print "Content-type: text/html\n\n";
+               print "Error: @_\n";
+               exit 1;
+       }
+       else {
+               die @_;
+       }

 }
 
 sub debug ($) {
 }
 
 sub debug ($) {


@@ -38,6 +51,12 @@ sub mtime ($) {
        return (stat($page))[9];
 }
 
        return (stat($page))[9];
 }
 

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

 sub basename {
        my $file=shift;
 
 sub basename {
        my $file=shift;
 


@@ -78,21 +97,21 @@ sub htmlpage ($) {
        return $page.".html";
 }
 
        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)) {


@@ -103,16 +122,16 @@ 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 {
        my $content=shift;
 
        my @links;
 }
 
 sub findlinks {
        my $content=shift;
 
        my @links;

-       while ($content =~ /$link/g) {
+       while ($content =~ /$wiki_link_regexp/g) {

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


@@ -138,7 +157,7 @@ sub bestlink ($$) {
                }
        } while $cwd=~s!/?[^/]+$!!;
 
                }
        } while $cwd=~s!/?[^/]+$!!;
 

-       print STDERR "warning: page $page, broken link: $link\n";
+       #print STDERR "warning: page $page, broken link: $link\n";

        return "";
 }
 
        return "";
 }
 


@@ -156,11 +175,15 @@ sub htmllink ($$) {
 
        return $link if $page eq $bestlink;
        
 
        return $link if $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
+       # masked by the bug mentioned below that makes all new files
+       # be rendered twice.

        if (! grep { $_ eq $bestlink } values %renderedfiles) {
                $bestlink=htmlpage($bestlink);
        }
        if (! grep { $_ eq $bestlink } values %renderedfiles) {
        if (! grep { $_ eq $bestlink } values %renderedfiles) {
                $bestlink=htmlpage($bestlink);
        }
        if (! grep { $_ eq $bestlink } values %renderedfiles) {

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

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


@@ -175,7 +198,7 @@ sub linkify ($$) {
        my $content=shift;
        my $file=shift;
 
        my $content=shift;
        my $file=shift;
 

-       $content =~ s/$link/htmllink(pagename($file), $1)/eg;
+       $content =~ s/$wiki_link_regexp/htmllink(pagename($file), $1)/eg;

        
        return $content;
 }
        
        return $content;
 }


@@ -192,6 +215,33 @@ sub htmlize ($$) {
        }
 }
 
        }
 }
 

+sub linkbacks ($$) {
+       my $content=shift;
+       my $page=shift;
+
+       my @links;
+       foreach my $p (keys %links) {
+               next if bestlink($page, $p) eq $page;
+               if (grep { length $_ && bestlink($p, $_) eq $page } @{$links{$p}}) {
+                       my $href=File::Spec->abs2rel(htmlpage($p), dirname($page));
+                       
+                       # Trim common dir prefixes from both pages.
+                       my $p_trimmed=$p;
+                       my $page_trimmed=$page;
+                       my $dir;
+                       1 while (($dir)=$page_trimmed=~m!^([^/]+/)!) &&
+                               defined $dir &&
+                               $p_trimmed=~s/^\Q$dir\E// &&
+                               $page_trimmed=~s/^\Q$dir\E//;
+                                      
+                       push @links, "<a href=\"$href\">$p_trimmed</a>";
+               }
+       }
+
+       $content.="<hr><p>Links: ".join(" ", sort @links)."</p>\n" if @links;
+       return $content;
+}
+

 sub finalize ($$) {
        my $content=shift;
        my $page=shift;
 sub finalize ($$) {
        my $content=shift;
        my $page=shift;


@@ -203,18 +253,25 @@ sub finalize ($$) {
        my $path="";
        foreach my $dir (reverse split("/", $page)) {
                if (length($pagelink)) {
        my $path="";
        foreach my $dir (reverse split("/", $page)) {
                if (length($pagelink)) {

-                       $pagelink="<a href=\"$path$dir.html\">$dir/</a> $pagelink";
+                       $pagelink="<a href=\"$path$dir.html\">$dir</a>/ $pagelink";

                }
                else {
                        $pagelink=$dir;
                }
                $path.="../";
        }
                }
                else {
                        $pagelink=$dir;
                }
                $path.="../";
        }

-       $path=~s/\.\.\///;
-       $pagelink="<a href=\"$path\">$wikiname/</a> $pagelink";
+       $path=~s/\.\.\/$/index.html/;
+       $pagelink="<a href=\"$path\">$wikiname</a>/ $pagelink";
+       
+       my @actions;
+       if (length $cgiurl) {
+               push @actions, "<a href=\"$cgiurl?do=edit&page=$page\">Edit</a>";
+               push @actions, "<a href=\"$cgiurl?do=recentchanges\">RecentChanges</a>";
+       }

        
        $content="<html>\n<head><title>$title</title></head>\n<body>\n".
                  "<h1>$pagelink</h1>\n".
        
        $content="<html>\n<head><title>$title</title></head>\n<body>\n".
                  "<h1>$pagelink</h1>\n".

+                 "@actions\n<hr>\n".

                  $content.
                  "</body>\n</html>\n";
        
                  $content.
                  "</body>\n</html>\n";
        


@@ -225,22 +282,24 @@ sub render ($) {
        my $file=shift;
        
        my $type=pagetype($file);
        my $file=shift;
        
        my $type=pagetype($file);

-       my $content=readpage($file);
+       my $content=readfile("$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)];

-       
+               

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

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

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

-               writepage(htmlpage($page), $content);
+               writefile("$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, $content);
+               writefile("$destdir/$file", $content);

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


@@ -249,11 +308,15 @@ sub render ($) {
 sub loadindex () {
        open (IN, "$srcdir/.index") || return;
        while (<IN>) {
 sub loadindex () {
        open (IN, "$srcdir/.index") || return;
        while (<IN>) {

+               $_=possibly_foolish_untaint($_);

                chomp;
                chomp;

-               my ($mtime, $page, $rendered, @links)=split(' ', $_);
+               my ($mtime, $file, $rendered, @links)=split(' ', $_);
+               my $page=pagename($file);
+               $pagesources{$page}=$file;

                $oldpagemtime{$page}=$mtime;
                $oldpagemtime{$page}=$mtime;

-               $links{$page}=\@links;
-               ($renderedfiles{$page})=$rendered=~m/(.*)/; # untaint
+               $oldlinks{$page}=[@links];
+               $links{$page}=[@links];
+               $renderedfiles{$page}=$rendered;

        }
        close IN;
 }      
        }
        close IN;
 }      


@@ -261,13 +324,99 @@ sub loadindex () {
 sub saveindex () {
        open (OUT, ">$srcdir/.index") || error("cannot write to .index: $!");
        foreach my $page (keys %oldpagemtime) {
 sub saveindex () {
        open (OUT, ">$srcdir/.index") || error("cannot write to .index: $!");
        foreach my $page (keys %oldpagemtime) {

-       print OUT "$oldpagemtime{$page} $page $renderedfiles{$page} ".
+       print OUT "$oldpagemtime{$page} $pagesources{$page} $renderedfiles{$page} ".

                  join(" ", @{$links{$page}})."\n"
                        if $oldpagemtime{$page};
        }
        close OUT;
 }
 
                  join(" ", @{$links{$page}})."\n"
                        if $oldpagemtime{$page};
        }
        close OUT;
 }
 

+sub rcs_update () {
+       if (-d "$srcdir/.svn") {
+               if (system("svn", "update", "--quiet", $srcdir) != 0) {
+                       warn("svn update failed\n");
+               }
+       }
+}
+
+sub rcs_commit ($) {
+       my $message=shift;
+
+       if (-d "$srcdir/.svn") {
+               if (system("svn", "commit", "--quiet", "-m",
+                          possibly_foolish_untaint($message), $srcdir) != 0) {
+                       warn("svn commit failed\n");
+               }
+       }
+}
+
+sub rcs_add ($) {
+       my $file=shift;
+
+       if (-d "$srcdir/.svn") {
+               my $parent=dirname($file);
+               while (! -d "$srcdir/$parent/.svn") {
+                       $file=$parent;
+                       $parent=dirname($file);
+               }
+               
+               if (system("svn", "add", "--quiet", "$srcdir/$file") != 0) {
+                       warn("svn add failed\n");
+               }
+       }
+}
+
+sub rcs_recentchanges ($) {
+       my $num=shift;
+       my @ret;
+       
+       eval {use Date::Parse};
+       eval {use Time::Duration};
+       
+       if (-d "$srcdir/.svn") {
+               my $info=`LANG=C svn info $srcdir`;
+               my ($svn_url)=$info=~/^URL: (.*)$/m;
+
+               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, $message);
+               foreach (`LANG=C svn log -v '$svn_url'`) {
+                       chomp;
+                       print STDERR "state: $state ($_)\n";
+                       if ($state eq 'start' && /$div/) {
+                               $state='header';
+                       }
+                       elsif ($state eq 'header' && /$infoline/) {
+                               $rev=$1;
+                               $user=$2;
+                               $when=ago(time - str2time($3));
+                       }
+                       elsif ($state eq 'header' && /^\s+(.*)/) {
+                               push @pages, $1;
+                       }
+                       elsif ($state eq 'header' && /^$/) {
+                               $state='body';
+                       }
+                       elsif ($state eq 'body' && /$div/) {
+                               push @ret, {rev => $rev, user => $user,
+                                       date => $when, message => $message,
+                                       pages => [@pages]},
+                               last if @ret >= $num;
+                               
+                               $state='header';
+                               $message=$rev=$user=$when=undef;
+                               @pages=();
+                       }
+                       elsif ($state eq 'body') {
+                               $message.="$_<br>\n";
+                       }
+               }
+       }
+
+       return @ret;
+}
+

 sub prune ($) {
        my $file=shift;
 
 sub prune ($) {
        my $file=shift;
 


@@ -285,11 +434,11 @@ sub refresh () {
        find({
                no_chdir => 1,
                wanted => sub {
        find({
                no_chdir => 1,
                wanted => sub {

-                       if (/\/\.svn\//) {
+                       if (/$wiki_file_prune_regexp/) {

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

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

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


@@ -302,23 +451,28 @@ sub refresh () {
                },
        }, $srcdir);
 
                },
        }, $srcdir);
 

+       my %rendered;
+

        # check for added or removed pages
        # check for added or removed pages

-       my @adddel;
+       my @add;

        foreach my $file (@files) {
                my $page=pagename($file);
                if (! $oldpagemtime{$page}) {
                        debug("new page $page");
        foreach my $file (@files) {
                my $page=pagename($file);
                if (! $oldpagemtime{$page}) {
                        debug("new page $page");

-                       push @adddel, $page;
+                       push @add, $file;

                        $links{$page}=[];
                        $links{$page}=[];

+                       $pagesources{$page}=$file;

                }
        }
                }
        }

+       my @del;

        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});
                        delete $renderedfiles{$page};
                        $oldpagemtime{$page}=0;
                        prune($destdir."/".$renderedfiles{$page});
                        delete $renderedfiles{$page};
                        $oldpagemtime{$page}=0;

-                       push @adddel, $page;
+                       delete $pagesources{$page};

                }
        }
        
                }
        }
        


@@ -330,27 +484,333 @@ sub refresh () {
                    mtime("$srcdir/$file") > $oldpagemtime{$page}) {
                        debug("rendering changed file $file");
                        render($file);
                    mtime("$srcdir/$file") > $oldpagemtime{$page}) {
                        debug("rendering changed file $file");
                        render($file);

+                       $rendered{$file}=1;

                }
        }
        
        # if any files were added or removed, check to see if each page
        # needs an update due to linking to them
                }
        }
        
        # if any files were added or removed, check to see if each page
        # needs an update due to linking to them

-       if (@adddel) {
+       # TODO: inefficient; pages may get rendered above and again here;
+       # problem is the bestlink may have changed and we won't know until
+       # now
+       if (@add || @del) {

 FILE:          foreach my $file (@files) {
                        my $page=pagename($file);
 FILE:          foreach my $file (@files) {
                        my $page=pagename($file);

-                       foreach my $p (@adddel) {
+                       foreach my $f (@add, @del) {
+                               my $p=pagename($f);

                                foreach my $link (@{$links{$page}}) {
                                        if (bestlink($page, $link) eq $p) {
                                                debug("rendering $file, which links to $p");
                                                render($file);
                                foreach my $link (@{$links{$page}}) {
                                        if (bestlink($page, $link) eq $p) {
                                                debug("rendering $file, which links to $p");
                                                render($file);

+                                               $rendered{$file}=1;

                                                next FILE;
                                        }
                                }
                        }
                }
        }
                                                next FILE;
                                        }
                                }
                        }
                }
        }

+
+       # handle linkbacks; if a page has added/removed links, update the
+       # 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
+       # 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);
+                                       if (length $link &&
+                                           ! exists $oldlinks{$page} ||
+                                           ! grep { $_ eq $link } @{$oldlinks{$page}}) {
+                                               $linkchanged{$link}=1;
+                                       }
+                               }
+                       }
+                       if (exists $oldlinks{$page}) {
+                               foreach my $link (@{$oldlinks{$page}}) {
+                                       $link=bestlink($page, $link);
+                                       if (length $link &&
+                                           ! exists $links{$page} ||
+                                           ! grep { $_ eq $link } @{$links{$page}}) {
+                                               $linkchanged{$link}=1;
+                                       }
+                               }
+                       }
+               }
+               foreach my $link (keys %linkchanged) {
+                       my $linkfile=$pagesources{$link};
+                       if (defined $linkfile) {
+                               debug("rendering $linkfile, to update its linkbacks");
+                               render($linkfile);
+                       }
+               }
+       }
+}
+
+# Generates a C wrapper program for running ikiwiki in a specific way.
+# The wrapper may be safely made suid.
+sub gen_wrapper ($$) {
+       my ($svn, $rebuild)=@_;
+
+       eval {use Cwd 'abs_path'};
+       $srcdir=abs_path($srcdir);
+       $destdir=abs_path($destdir);
+       my $this=abs_path($0);
+       if (! -x $this) {
+               error("$this doesn't seem to be executable");
+       }
+
+       my @params=($srcdir, $destdir, "--wikiname=$wikiname");
+       push @params, "--verbose" if $verbose;
+       push @params, "--rebuild" if $rebuild;
+       push @params, "--nosvn" if !$svn;
+       push @params, "--cgi" if $cgi;
+       push @params, "--url=$url" if $url;
+       push @params, "--cgiurl=$cgiurl" if $cgiurl;
+       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} if $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: $!");;
+       print OUT <<"EOF";
+/* A wrapper for ikiwiki, can be safely made suid. */
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+
+extern char **environ;
+
+int main (int argc, char **argv) {
+       /* Sanitize environment. */
+       char *s;
+       char *newenviron[$#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;
+       if (system("gcc", "ikiwiki-wrap.c", "-o", "ikiwiki-wrap") != 0) {
+               error("failed to compile ikiwiki-wrap.c");
+       }
+       unlink("ikiwiki-wrap.c");
+       print "successfully generated ikiwiki-wrap\n";
+       exit 0;
+}
+
+sub cgi () {
+       eval q{use CGI};
+       my $q=CGI->new;

 
 

-loadindex();
-refresh();
-saveindex();
+       my $do=$q->param('do');
+       if (! defined $do || ! length $do) {
+               error("\"do\" parameter missing");
+       }
+       
+       if ($do eq 'recentchanges') {
+               my $list="<ul>\n";
+               foreach my $change (rcs_recentchanges(100)) {
+                       $list.="<li>";
+                       foreach my $page (@{$change->{pages}}) {
+                               $list.=$page." ";
+                       }
+                       $list.="<br>\n";
+                       $list.="changed ".$change->{when}." by ".
+                              htmllink("index", $change->{user}).
+                              ": <i>".$change->{message}."<br>\n";
+                       $list.="</li>\n";
+               }
+               $list.="</ul>\n";
+               
+               print $q->header,
+                     $q->start_html("RecentChanges"),
+                     $q->h1("<a href=\"$url\">$wikiname</a>/ RecentChanges"),
+                     $list,
+                     $q->end_form,
+                     $q->end_html;
+               return;
+       }
+       
+       my ($page)=$q->param('page')=~/$wiki_file_regexp/;
+       if (! defined $page || ! length $page || $page ne $q->param('page') ||
+           $page=~/$wiki_file_prune_regexp/ || $page=~/^\//) {
+               error("bad page name");
+       }
+       $page=lc($page);
+       
+       my $action=$q->request_uri;
+       $action=~s/\?.*//;
+       
+       if ($do eq 'create') {
+               if (exists $pagesources{lc($page)}) {
+                       # hmm, someone else made the page in the meantime?
+                       print $q->redirect("$url/".htmlpage($page));
+               }
+
+               my @page_locs;
+               my ($from)=$q->param('from')=~/$wiki_file_regexp/;
+               if (! defined $from || ! length $from ||
+                   $from ne $q->param('from') ||
+                   $from=~/$wiki_file_prune_regexp/ || $from=~/^\//) {
+                       @page_locs=$page;
+               }
+               else {
+                       my $dir=$from."/";
+                       $dir=~s![^/]+/$!!;
+                       push @page_locs, $dir.$page;
+                       push @page_locs, "$from/$page";
+                       while (length $dir) {
+                               $dir=~s![^/]+/$!!;
+                               push @page_locs, $dir.$page;
+                       }
+               }
+               
+               $q->param("do", "save");
+               print $q->header,
+                     $q->start_html("Creating $page"),
+                     $q->start_h1("<a href=\"$url\">$wikiname</a>/ Creating $page"),
+                     $q->start_form(-action => $action),
+                     $q->hidden('do'),
+                     "Select page location:",
+                     $q->popup_menu('page', \@page_locs),
+                     $q->textarea(-name => 'content',
+                              -default => "",
+                              -rows => 20,
+                              -columns => 80),
+                     $q->br,
+                     "Optional comment about this change:",
+                     $q->br,
+                     $q->textfield(-name => "comments", -size => 80),
+                     $q->br,
+                     $q->submit("Save Page"),
+                     $q->end_form,
+                     $q->end_html;
+       }
+       elsif ($do eq 'edit') {
+               my $content="";
+               if (exists $pagesources{lc($page)}) {
+                       $content=readfile("$srcdir/$pagesources{lc($page)}");
+                       $content=~s/\n/\r\n/g;
+               }
+               $q->param("do", "save");
+               print $q->header,
+                     $q->start_html("Editing $page"),
+                     $q->h1("<a href=\"$url\">$wikiname</a>/ Editing $page"),
+                     $q->start_form(-action => $action),
+                     $q->hidden('do'),
+                     $q->hidden('page'),
+                     $q->textarea(-name => 'content',
+                              -default => $content,
+                              -rows => 20,
+                              -columns => 80),
+                     $q->br,
+                     "Optional comment about this change:",
+                     $q->br,
+                     $q->textfield(-name => "comments", -size => 80),
+                     $q->br,
+                     $q->submit("Save Page"),
+                     $q->end_form,
+                     $q->end_html;
+       }
+       elsif ($do eq 'save') {
+               my $file=$page.$default_pagetype;
+               my $newfile=1;
+               if (exists $pagesources{lc($page)}) {
+                       $file=$pagesources{lc($page)};
+                       $newfile=0;
+               }
+               
+               my $content=$q->param('content');
+               $content=~s/\r\n/\n/g;
+               $content=~s/\r/\n/g;
+               writefile("$srcdir/$file", $content);
+               
+               my $message="web commit from $ENV{REMOTE_ADDR}";
+               if (defined $q->param('comments')) {
+                       $message.=": ".$q->param('comments');
+               }
+               
+               if ($svn) {
+                       if ($newfile) {
+                               rcs_add($file);
+                       }
+                       # presumably the commit will trigger an update
+                       # of the wiki
+                       rcs_commit($message);
+               }
+               else {
+                       refresh();
+               }
+               
+               print $q->redirect("$url/".htmlpage($page));
+       }
+       else {
+               error("unknown do parameter");
+       }
+}
+
+my $rebuild=0;
+my $wrapper=0;
+if (grep /^-/, @ARGV) {
+       eval {use Getopt::Long};
+       GetOptions(
+               "wikiname=s" => \$wikiname,
+               "verbose|v" => \$verbose,
+               "rebuild" => \$rebuild,
+               "wrapper" => \$wrapper,
+               "svn!" => \$svn,
+               "cgi" => \$cgi,
+               "url=s" => \$url,
+               "cgiurl=s" => \$cgiurl,
+       ) || usage();
+}
+usage() unless @ARGV == 2;
+($srcdir) = possibly_foolish_untaint(shift);
+($destdir) = possibly_foolish_untaint(shift);
+
+if ($cgi && ! length $url) {
+       error("Must specify url to wiki with --url when using --cgi");
+}
+
+gen_wrapper($svn, $rebuild) if $wrapper;
+memoize('pagename');
+memoize('bestlink');
+loadindex() unless $rebuild;
+if ($cgi) {
+       cgi();
+}
+else {
+       rcs_update() if $svn;
+       refresh();
+       saveindex();
+}