]> git.vanrenterghem.biz Git - git.ikiwiki.info.git/blobdiff - IkiWiki/CGI.pm
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[git.ikiwiki.info.git] / IkiWiki / CGI.pm
index d9c9fe82896c8f5a52490ccb7be3147684ace455..042e168aa8dc501613746ea3af45b2ecbbc4fafa 100644 (file)
@@ -4,218 +4,155 @@ use warnings;
 use strict;
 use IkiWiki;
 use IkiWiki::UserInfo;
-use encoding 'utf8'; # force use of utf8 for io layer
+use open qw{:utf8 :std};
+use Encode;
 
 package IkiWiki;
 
-sub page_locked ($$;$) { #{{{
-       my $page=shift;
+sub printheader ($) { #{{{
        my $session=shift;
-       my $nonfatal=shift;
        
-       my $user=$session->param("name");
-       return if defined $user && is_admin($user);
-
-       foreach my $admin (@{$config{adminuser}}) {
-               my $locked_pages=userinfo_get($admin, "locked_pages");
-               if (globlist_match($page, userinfo_get($admin, "locked_pages"))) {
-                       return 1 if $nonfatal;
-                       error(htmllink("", "", $page, 1)." is locked by ".
-                             htmllink("", "", $admin, 1)." and cannot be edited.");
-               }
+       if ($config{sslcookie}) {
+               print $session->header(-charset => 'utf-8',
+                       -cookie => $session->cookie(-secure => 1));
+       } else {
+               print $session->header(-charset => 'utf-8');
        }
 
-       return 0;
 } #}}}
 
-sub cgi_recentchanges ($) { #{{{
+sub showform ($$$$;@) { #{{{
+       my $form=shift;
+       my $buttons=shift;
+       my $session=shift;
+       my $cgi=shift;
+
+       if (exists $hooks{formbuilder}) {
+               run_hooks(formbuilder => sub {
+                       shift->(form => $form, cgi => $cgi, session => $session,
+                               buttons => $buttons);
+               });
+       }
+
+       printheader($session);
+       print misctemplate($form->title, $form->render(submit => $buttons), @_);
+}
+
+sub redirect ($$) { #{{{
        my $q=shift;
+       my $url=shift;
+       if (! $config{w3mmode}) {
+               print $q->redirect($url);
+       }
+       else {
+               print "Content-type: text/plain\n";
+               print "W3m-control: GOTO $url\n\n";
+       }
+} #}}}
+
+sub check_canedit ($$$;$) { #{{{
+       my $page=shift;
+       my $q=shift;
+       my $session=shift;
+       my $nonfatal=shift;
        
-       unlockwiki();
-
-       # Force reading the template as utf-8, necessary if
-       # rcs_recentchanges returns true utf-8 strings.
-       open(TMPL, "<:utf8", "$config{templatedir}/recentchanges.tmpl");
-       my $template=HTML::Template->new(filehandle => *TMPL);
-       close(TMPL);
-       my $template=HTML::Template->new(
-               filename => "$config{templatedir}/recentchanges.tmpl"
-       );
-       $template->param(
-               title => "RecentChanges",
-               indexlink => indexlink(),
-               wikiname => $config{wikiname},
-               changelog => [rcs_recentchanges(100)],
-               styleurl => styleurl(),
-               baseurl => "$config{url}/",
-       );
-       print $q->header(-charset=>'utf-8'), $template->output;
+       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 $canedit;
 } #}}}
 
+sub decode_cgi_utf8 ($) { #{{{
+       my $cgi = shift;
+       foreach my $f ($cgi->param) {
+               $cgi->param($f, map { decode_utf8 $_ } $cgi->param($f));
+       }
+} #}}}
+
+# Check if the user is signed in. If not, redirect to the signin form and
+# save their place to return to later.
+sub needsignin ($$) { #{{{
+       my $q=shift;
+       my $session=shift;
+
+       if (! defined $session->param("name") ||
+           ! userinfo_get($session->param("name"), "regdate")) {
+               $session->param(postsignin => $ENV{QUERY_STRING});
+               cgi_signin($q, $session);
+               cgi_savesession($session);
+               exit;
+       }
+} #}}} 
+
 sub cgi_signin ($$) { #{{{
        my $q=shift;
        my $session=shift;
 
+       decode_cgi_utf8($q);
        eval q{use CGI::FormBuilder};
+       error($@) if $@;
        my $form = CGI::FormBuilder->new(
                title => "signin",
-               fields => [qw(do title page subpage from name password confirm_password email)],
-               header => 1,
+               name => "signin",
                charset => "utf-8",
                method => 'POST',
-               validate => {
-                       confirm_password => {
-                               perl => q{eq $form->field("password")},
-                       },
-                       email => 'EMAIL',
-               },
                required => 'NONE',
                javascript => 0,
                params => $q,
                action => $config{cgiurl},
                header => 0,
-               template => (-e "$config{templatedir}/signin.tmpl" ?
-                             "$config{templatedir}/signin.tmpl" : ""),
-               stylesheet => styleurl(),
+               template => {type => 'div'},
+               stylesheet => baseurl()."style.css",
        );
+       my $buttons=["Login"];
        
-       $form->field(name => "name", required => 0);
-       $form->field(name => "do", type => "hidden");
-       $form->field(name => "page", type => "hidden");
-       $form->field(name => "title", type => "hidden");
-       $form->field(name => "from", type => "hidden");
-       $form->field(name => "subpage", 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") {
-               $form->text("You need to log in first.");
+       if ($q->param("do") ne "signin" && !$form->submitted) {
+               $form->text(gettext("You need to log in first."));
        }
+       $form->field(name => "do", type => "hidden", value => "signin",
+               force => 1);
        
+       run_hooks(formbuilder_setup => sub {
+               shift->(form => $form, cgi => $q, session => $session,
+                       buttons => $buttons);
+       });
+
        if ($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 &&
-                                       $name=~/$config{wiki_file_regexp}/ &&
-                                       ! 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"));
-               }
+               $form->validate;
        }
 
-       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(cgiurl(
-                                       do => $form->field("do"),
-                                       page => $form->field("page"),
-                                       title => $form->field("title"),
-                                       subpage => $form->field("subpage"),
-                                       from => $form->field("from"),
-                               ));
-                       }
-                       else {
-                               print $q->redirect($config{url});
-                       }
-               }
-               elsif ($form->submitted eq 'Register') {
-                       my $user_name=$form->field('name');
-                       if (userinfo_setall($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 $session->header(-charset=>'utf-8');
-                               print misctemplate($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 => $ENV{REMOTE_ADDR},
-                       );
-                       
-                       eval q{use Mail::Sendmail};
-                       sendmail(
-                               To => userinfo_get($user_name, "email"),
-                               From => "$config{wikiname} admin <$config{adminemail}>",
-                               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 $session->header(-charset=>'utf-8');
-                       print misctemplate($form->title, $form->render(submit => ["Login", "Register", "Mail Password"]));
-               }
+       showform($form, $buttons, $session, $q);
+} #}}}
+
+sub cgi_postsignin ($$) { #{{{
+       my $q=shift;
+       my $session=shift;
+       
+       # Continue with whatever was being done before the signin process.
+       if (defined $session->param("postsignin")) {
+               my $postsignin=CGI->new($session->param("postsignin"));
+               $session->clear("postsignin");
+               cgi($postsignin, $session);
+               cgi_savesession($session);
+               exit;
        }
        else {
-               print $session->header(-charset=>'utf-8');
-               print misctemplate($form->title, $form->render(submit => ["Login", "Register", "Mail Password"]));
+               error(gettext("login failed, perhaps you need to turn on cookies?"));
        }
 } #}}}
 
@@ -223,167 +160,219 @@ sub cgi_prefs ($$) { #{{{
        my $q=shift;
        my $session=shift;
 
+       needsignin($q, $session);
+
+       decode_cgi_utf8($q);
        eval q{use CGI::FormBuilder};
+       error($@) if $@;
        my $form = CGI::FormBuilder->new(
                title => "preferences",
-               fields => [qw(do name password confirm_password email 
-                             subscriptions locked_pages)],
+               name => "preferences",
                header => 0,
                charset => "utf-8",
                method => 'POST',
                validate => {
-                       confirm_password => {
-                               perl => q{eq $form->field("password")},
-                       },
                        email => 'EMAIL',
                },
                required => 'NONE',
                javascript => 0,
                params => $q,
                action => $config{cgiurl},
-               template => (-e "$config{templatedir}/prefs.tmpl" ?
-                             "$config{templatedir}/prefs.tmpl" : ""),
-               stylesheet => styleurl(),
+               template => {type => 'div'},
+               stylesheet => baseurl()."style.css",
+               fieldsets => [
+                       [login => gettext("Login")],
+                       [preferences => gettext("Preferences")],
+                       [admin => gettext("Admin")]
+               ],
        );
-       my @buttons=("Save Preferences", "Logout", "Cancel");
+       my $buttons=["Save Preferences", "Logout", "Cancel"];
+
+       run_hooks(formbuilder_setup => sub {
+               shift->(form => $form, cgi => $q, session => $session,
+                       buttons => $buttons);
+       });
        
-       my $user_name=$session->param("name");
        $form->field(name => "do", type => "hidden");
-       $form->field(name => "name", disabled => 1,
-               value => $user_name, force => 1);
-       $form->field(name => "password", type => "password");
-       $form->field(name => "confirm_password", type => "password");
-       $form->field(name => "subscriptions", size => 50,
-               comment => "(".htmllink("", "", "GlobList", 1).")");
-       $form->field(name => "locked_pages", size => 50,
-               comment => "(".htmllink("", "", "GlobList", 1).")");
+       $form->field(name => "email", size => 50, fieldset => "preferences");
+       $form->field(name => "banned_users", size => 50,
+               fieldset => "admin");
        
+       my $user_name=$session->param("name");
        if (! is_admin($user_name)) {
-               $form->field(name => "locked_pages", type => "hidden");
+               $form->field(name => "banned_users", type => "hidden");
        }
-       
+
        if (! $form->submitted) {
                $form->field(name => "email", force => 1,
                        value => userinfo_get($user_name, "email"));
-               $form->field(name => "subscriptions", force => 1,
-                       value => userinfo_get($user_name, "subscriptions"));
-               $form->field(name => "locked_pages", force => 1,
-                       value => userinfo_get($user_name, "locked_pages"));
+               if (is_admin($user_name)) {
+                       $form->field(name => "banned_users", force => 1,
+                               value => join(" ", get_banned_users()));
+               }
        }
        
        if ($form->submitted eq 'Logout') {
                $session->delete();
-               print $q->redirect($config{url});
+               redirect($q, $config{url});
                return;
        }
        elsif ($form->submitted eq 'Cancel') {
-               print $q->redirect($config{url});
+               redirect($q, $config{url});
                return;
        }
-       elsif ($form->submitted eq "Save Preferences" && $form->validate) {
-               foreach my $field (qw(password email subscriptions locked_pages)) {
-                       if (length $form->field($field)) {
-                               userinfo_set($user_name, $field, $form->field($field)) || error("failed to set $field");
-                       }
+       elsif ($form->submitted eq 'Save Preferences' && $form->validate) {
+               if (defined $form->field('email')) {
+                       userinfo_set($user_name, 'email', $form->field('email')) ||
+                               error("failed to set email");
+               }
+               if (is_admin($user_name)) {
+                       set_banned_users(grep { ! is_admin($_) }
+                                       split(' ',
+                                               $form->field("banned_users"))) ||
+                               error("failed saving changes");
                }
-               $form->text("Preferences saved.");
+               $form->text(gettext("Preferences saved."));
        }
        
-       print $session->header(-charset=>'utf-8');
-       print misctemplate($form->title, $form->render(submit => \@buttons));
+       showform($form, $buttons, $session, $q);
 } #}}}
 
 sub cgi_editpage ($$) { #{{{
        my $q=shift;
        my $session=shift;
 
+       my @fields=qw(do rcsinfo subpage from page type editcontent comments);
+       my @buttons=("Save Page", "Preview", "Cancel");
+       
+       decode_cgi_utf8($q);
        eval q{use CGI::FormBuilder};
+       error($@) if $@;
        my $form = CGI::FormBuilder->new(
-               fields => [qw(do rcsinfo subpage from page editcontent comments)],
-               header => 1,
+               title => "editpage",
+               fields => \@fields,
                charset => "utf-8",
                method => 'POST',
-               validate => {
-                       editcontent => '/.+/',
-               },
                required => [qw{editcontent}],
                javascript => 0,
                params => $q,
                action => $config{cgiurl},
+               header => 0,
                table => 0,
-               template => "$config{templatedir}/editpage.tmpl"
+               template => scalar template_params("editpage.tmpl"),
+               wikiname => $config{wikiname},
        );
-       my @buttons=("Save Page", "Preview", "Cancel");
        
-       # This untaint is safe because titlepage removes any problimatic
+       run_hooks(formbuilder_setup => sub {
+               shift->(form => $form, cgi => $q, session => $session,
+                       buttons => \@buttons);
+       });
+       
+       # This untaint is safe because titlepage removes any problematic
        # characters.
-       my ($page)=titlepage(possibly_foolish_untaint(lc($form->param('page'))));
+       my ($page)=$form->field('page');
+       $page=titlepage(possibly_foolish_untaint($page));
        if (! defined $page || ! length $page ||
-           $page=~/$config{wiki_file_prune_regexp}/ || $page=~/^\//) {
+           file_pruned($page, $config{srcdir}) || $page=~/^\//) {
                error("bad page name");
        }
-       $page=lc($page);
+
+       my $baseurl=$config{url}."/".htmlpage($page);
+       
+       my $from;
+       if (defined $form->field('from')) {
+               ($from)=$form->field('from')=~/$config{wiki_file_regexp}/;
+       }
        
-       my $file=$page.$config{default_pageext};
-       if (exists $pagesources{lc($page)}) {
-               $file=$pagesources{lc($page)};
+       my $file;
+       my $type;
+       if (exists $pagesources{$page} && $form->field("do") ne "create") {
+               $file=$pagesources{$page};
+               $type=pagetype($file);
+               if (! defined $type || $type=~/^_/) {
+                       error(sprintf(gettext("%s is not an editable page"), $page));
+               }
+               if (! $form->submitted) {
+                       $form->field(name => "rcsinfo",
+                               value => rcs_prepedit($file), force => 1);
+               }
+               $form->field(name => "editcontent", validate => '/.*/');
        }
-       my $newfile=0;
-       if (! -e "$config{srcdir}/$file") {
-               $newfile=1;
+       else {
+               $type=$form->param('type');
+               if (defined $type && length $type && $hooks{htmlize}{$type}) {
+                       $type=possibly_foolish_untaint($type);
+               }
+               elsif (defined $from && exists $pagesources{$from}) {
+                       # favor the type of linking page
+                       $type=pagetype($pagesources{$from});
+               }
+               $type=$config{default_pageext} unless defined $type;
+               $file=$page.".".$type;
+               if (! $form->submitted) {
+                       $form->field(name => "rcsinfo", value => "", force => 1);
+               }
+               $form->field(name => "editcontent", validate => '/.+/');
        }
 
        $form->field(name => "do", type => 'hidden');
        $form->field(name => "from", type => 'hidden');
        $form->field(name => "rcsinfo", type => 'hidden');
        $form->field(name => "subpage", type => 'hidden');
-       $form->field(name => "page", value => "$page", force => 1);
+       $form->field(name => "page", value => pagetitle($page, 1), force => 1);
+       $form->field(name => "type", value => $type, force => 1);
        $form->field(name => "comments", type => "text", size => 80);
        $form->field(name => "editcontent", type => "textarea", rows => 20,
                cols => 80);
        $form->tmpl_param("can_commit", $config{rcs});
        $form->tmpl_param("indexlink", indexlink());
        $form->tmpl_param("helponformattinglink",
-               htmllink("", "", "HelpOnFormatting", 1));
-       $form->tmpl_param("styleurl", styleurl());
-       $form->tmpl_param("baseurl", "$config{url}/");
-       if (! $form->submitted) {
-               $form->field(name => "rcsinfo", value => rcs_prepedit($file),
-                       force => 1);
-       }
+               htmllink($page, $page, "ikiwiki/formatting",
+                       noimageinline => 1,
+                       linktext => "FormattingHelp"));
        
        if ($form->submitted eq "Cancel") {
-               print $q->redirect("$config{url}/".htmlpage($page));
+               if ($form->field("do") eq "create" && defined $from) {
+                       redirect($q, "$config{url}/".htmlpage($from));
+               }
+               elsif ($form->field("do") eq "create") {
+                       redirect($q, $config{url});
+               }
+               else {
+                       redirect($q, "$config{url}/".htmlpage($page));
+               }
                return;
        }
        elsif ($form->submitted eq "Preview") {
-               require IkiWiki::Render;
-               # Apparently FormBuilder doesn't not treat input as
-               # utf-8, so decode from it.
-               require Encode;
-               my $content = Encode::decode_utf8($form->field('editcontent'));
-               $form->field(name => "editcontent",
-                               value => $content, force => 1);
-               $form->field(name => "comments",
-                               value => Encode::decode_utf8($form->field('comments')), force => 1);
+               my $content=$form->field('editcontent');
+               run_hooks(editcontent => sub {
+                       $content=shift->(
+                               content => $content,
+                               page => $page,
+                               cgi => $q,
+                               session => $session,
+                       );
+               });
                $form->tmpl_param("page_preview",
-                       htmlize($config{default_pageext},
-                               linkify($page, $page, $content)));
+                       htmlize($page, $type,
+                       linkify($page, $page,
+                       preprocess($page, $page,
+                       filter($page, $page, $content), 0, 1))));
+               # previewing may have created files on disk
+               saveindex();
        }
-       else {
+       elsif ($form->submitted eq "Save Page") {
                $form->tmpl_param("page_preview", "");
        }
        $form->tmpl_param("page_conflict", "");
        
-       if (! $form->submitted || $form->submitted eq "Preview" || 
-           ! $form->validate) {
+       if ($form->submitted ne "Save Page" || ! $form->validate) {
                if ($form->field("do") eq "create") {
                        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 ne $form->field('from') ||
+                           file_pruned($from, $config{srcdir}) ||
                            $from=~/^\// ||
                            $form->submitted eq "Preview") {
                                @page_locs=$best_loc=$page;
@@ -392,8 +381,8 @@ sub cgi_editpage ($$) { #{{{
                                my $dir=$from."/";
                                $dir=~s![^/]+/+$!!;
                                
-                               if ((defined $form->param('subpage') && length $form->param('subpage')) ||
-                                   $page eq 'discussion') {
+                               if ((defined $form->field('subpage') && length $form->field('subpage')) ||
+                                   $page eq gettext('discussion')) {
                                        $best_loc="$from/$page";
                                }
                                else {
@@ -406,32 +395,59 @@ sub cgi_editpage ($$) { #{{{
                                        $dir=~s![^/]+/+$!!;
                                        push @page_locs, $dir.$page;
                                }
+                       
+                               push @page_locs, "$config{userdir}/$page"
+                                       if length $config{userdir};
                        }
 
                        @page_locs = grep {
-                               ! exists $pagesources{lc($_)} &&
-                               ! page_locked($_, $session, 1)
+                               ! exists $pagecase{lc $_}
                        } @page_locs;
-                       
                        if (! @page_locs) {
                                # hmm, someone else made the page in the
                                # meantime?
-                               print $q->redirect("$config{url}/".htmlpage($page));
-                               return;
+                               if ($form->submitted eq "Preview") {
+                                       # let them go ahead with the edit
+                                       # and resolve the conflict at save
+                                       # time
+                                       @page_locs=$page;
+                               }
+                               else {
+                                       redirect($q, "$config{url}/".htmlpage($page));
+                                       return;
+                               }
                        }
-                               
+
+                       my @editable_locs = grep {
+                               check_canedit($_, $q, $session, 1)
+                       } @page_locs;
+                       if (! @editable_locs) {
+                               # let it throw an error this time
+                               map { check_canedit($_, $q, $session) } @page_locs;
+                       }
+                       
+                       my @page_types;
+                       if (exists $hooks{htmlize}) {
+                               @page_types=grep { !/^_/ }
+                                       keys %{$hooks{htmlize}};
+                       }
+                       
                        $form->tmpl_param("page_select", 1);
                        $form->field(name => "page", type => 'select',
-                               options => \@page_locs, value => $best_loc);
-                       $form->title("creating ".pagetitle($page));
+                               options => [ map { pagetitle($_, 1) } @editable_locs ],
+                               value => pagetitle($best_loc, 1));
+                       $form->field(name => "type", type => 'select',
+                               options => \@page_types);
+                       $form->title(sprintf(gettext("creating %s"), pagetitle($page)));
+                       
                }
                elsif ($form->field("do") eq "edit") {
-                       page_locked($page, $session);
+                       check_canedit($page, $q, $session);
                        if (! defined $form->field('editcontent') || 
                            ! length $form->field('editcontent')) {
                                my $content="";
-                               if (exists $pagesources{lc($page)}) {
-                                       $content=readfile(srcfile($pagesources{lc($page)}));
+                               if (exists $pagesources{$page}) {
+                                       $content=readfile(srcfile($pagesources{$page}));
                                        $content=~s/\n/\r\n/g;
                                }
                                $form->field(name => "editcontent", value => $content,
@@ -439,140 +455,223 @@ sub cgi_editpage ($$) { #{{{
                        }
                        $form->tmpl_param("page_select", 0);
                        $form->field(name => "page", type => 'hidden');
-                       $form->title("editing ".pagetitle($page));
+                       $form->field(name => "type", type => 'hidden');
+                       $form->title(sprintf(gettext("editing %s"), pagetitle($page)));
                }
                
-               print $form->render(submit => \@buttons);
+               showform($form, \@buttons, $session, $q, forcebaseurl => $baseurl);
        }
        else {
                # save page
-               page_locked($page, $session);
-               
-               # Decode utf-8 since FormBuilder does not
-               require Encode;
-               my $content=Encode::decode_utf8($form->field('editcontent'));
+               check_canedit($page, $q, $session);
 
-               $content=~s/\r\n/\n/g;
-               $content=~s/\r/\n/g;
-               writefile($file, $config{srcdir}, $content);
-               
-               my $message="web commit ";
-               if (defined $session->param("name") && 
-                   length $session->param("name")) {
-                       $message.="by ".$session->param("name");
+               my $exists=-e "$config{srcdir}/$file";
+
+               if ($form->field("do") ne "create" && ! $exists &&
+                   ! eval { srcfile($file) }) {
+                       $form->tmpl_param("page_gone", 1);
+                       $form->field(name => "do", value => "create", force => 1);
+                       $form->tmpl_param("page_select", 0);
+                       $form->field(name => "page", type => 'hidden');
+                       $form->field(name => "type", type => 'hidden');
+                       $form->title(sprintf(gettext("editing %s"), $page));
+                       showform($form, \@buttons, $session, $q, forcebaseurl => $baseurl);
+                       return;
                }
-               else {
-                       $message.="from $ENV{REMOTE_ADDR}";
+               elsif ($form->field("do") eq "create" && $exists) {
+                       $form->tmpl_param("creation_conflict", 1);
+                       $form->field(name => "do", value => "edit", force => 1);
+                       $form->tmpl_param("page_select", 0);
+                       $form->field(name => "page", type => 'hidden');
+                       $form->field(name => "type", type => 'hidden');
+                       $form->title(sprintf(gettext("editing %s"), $page));
+                       $form->field("editcontent", 
+                               value => readfile("$config{srcdir}/$file").
+                                        "\n\n\n".$form->field("editcontent"),
+                               force => 1);
+                       showform($form, \@buttons, $session, $q, forcebaseurl => $baseurl);
+                       return;
                }
-               if (defined $form->field('comments') &&
-                   length $form->field('comments')) {
-                       $message.=Encode::decode_utf8(": ".$form->field('comments'));
+               
+               my $content=$form->field('editcontent');
+               run_hooks(editcontent => sub {
+                       $content=shift->(
+                               content => $content,
+                               page => $page,
+                               cgi => $q,
+                               session => $session,
+                       );
+               });
+               $content=~s/\r\n/\n/g;
+               $content=~s/\r/\n/g;
+               $content.="\n" if $content !~ /\n$/;
+
+               $config{cgi}=0; # avoid cgi error message
+               eval { writefile($file, $config{srcdir}, $content) };
+               $config{cgi}=1;
+               if ($@) {
+                       $form->field(name => "rcsinfo", value => rcs_prepedit($file),
+                               force => 1);
+                       $form->tmpl_param("failed_save", 1);
+                       $form->tmpl_param("error_message", $@);
+                       $form->field("editcontent", value => $content, force => 1);
+                       $form->tmpl_param("page_select", 0);
+                       $form->field(name => "page", type => 'hidden');
+                       $form->field(name => "type", type => 'hidden');
+                       $form->title(sprintf(gettext("editing %s"), $page));
+                       showform($form, \@buttons, $session, $q,
+                               forcebaseurl => $baseurl);
+                       return;
                }
                
+               my $conflict;
                if ($config{rcs}) {
-                       if ($newfile) {
+                       my $message="";
+                       if (defined $form->field('comments') &&
+                           length $form->field('comments')) {
+                               $message=$form->field('comments');
+                       }
+                       
+                       if (! $exists) {
                                rcs_add($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"));
+
+                       # Prevent deadlock with post-commit hook by
+                       # signaling to it that it should not try to
+                       # do anything.
+                       disable_commit_hook();
+                       $conflict=rcs_commit($file, $message,
+                               $form->field("rcsinfo"),
+                               $session->param("name"), $ENV{REMOTE_ADDR});
+                       enable_commit_hook();
+                       rcs_update();
+               }
                
-                       if (defined $conflict) {
-                               $form->field(name => "rcsinfo", value => rcs_prepedit($file),
-                                       force => 1);
-                               $form->tmpl_param("page_conflict", 1);
-                               $form->field("editcontent", value => $conflict, force => 1);
-                               $form->field(name => "comments", value => Encode::decode_utf8($form->field('comments')), 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;
-                       }
+               # Refresh even if there was a conflict, since other changes
+               # may have been committed while the post-commit hook was
+               # disabled.
+               require IkiWiki::Render;
+               refresh();
+               saveindex();
+
+               if (defined $conflict) {
+                       $form->field(name => "rcsinfo", value => rcs_prepedit($file),
+                               force => 1);
+                       $form->tmpl_param("page_conflict", 1);
+                       $form->field("editcontent", value => $conflict, force => 1);
+                       $form->field("do", "edit", force => 1);
+                       $form->tmpl_param("page_select", 0);
+                       $form->field(name => "page", type => 'hidden');
+                       $form->field(name => "type", type => 'hidden');
+                       $form->title(sprintf(gettext("editing %s"), $page));
+                       showform($form, \@buttons, $session, $q,
+                               forcebaseurl => $baseurl);
+                       return;
                }
                else {
-                       require IkiWiki::Render;
-                       refresh();
-                       saveindex();
+                       # The trailing question mark tries to avoid broken
+                       # caches and get the most recent version of the page.
+                       redirect($q, "$config{url}/".htmlpage($page)."?updated");
                }
-               
-               # 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};
+sub cgi_getsession ($) { #{{{
+       my $q=shift;
+
        eval q{use CGI::Session};
+       CGI::Session->name("ikiwiki_session_".encode_utf8($config{wikiname}));
+       
+       my $oldmask=umask(077);
+       my $session = CGI::Session->new("driver:DB_File", $q,
+               { FileName => "$config{wikistatedir}/sessions.db" });
+       umask($oldmask);
+
+       return $session;
+} #}}}
+
+sub cgi_savesession ($) { #{{{
+       my $session=shift;
+
+       # Force session flush with safe umask.
+       my $oldmask=umask(077);
+       $session->flush;
+       umask($oldmask);
+} #}}}
+
+sub cgi (;$$) { #{{{
+       my $q=shift;
+       my $session=shift;
+
+       if (! $q) {
+               eval q{use CGI};
+               error($@) if $@;
        
-       my $q=CGI->new;
+               $q=CGI->new;
        
-       if (exists $hooks{cgi}) {
-               foreach my $id (keys %{$hooks{cgi}}) {
-                       $hooks{cgi}{$id}{call}->($q);
-               }
+               run_hooks(cgi => sub { shift->($q) });
        }
-       
+
        my $do=$q->param('do');
        if (! defined $do || ! length $do) {
-               error("\"do\" parameter missing");
-       }
-       
-       # Things that do not need a session.
-       if ($do eq 'recentchanges') {
-               cgi_recentchanges($q);
-               return;
-       }
-       elsif ($do eq 'hyperestraier') {
-               cgi_hyperestraier();
+               my $error = $q->cgi_error;
+               if ($error) {
+                       error("Request not processed: $error");
+               }
+               else {
+                       error("\"do\" parameter missing");
+               }
        }
        
-       CGI::Session->name("ikiwiki_session_$config{wikiname}");
-       
-       my $oldmask=umask(077);
-       my $session = CGI::Session->new("driver:DB_File", $q,
-               { FileName => "$config{wikistatedir}/sessions.db" });
-       umask($oldmask);
+       # Need to lock the wiki before getting a session.
+       lockwiki();
+       loadindex();
        
-       # 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);
+       if (! $session) {
+               $session=cgi_getsession($q);
+       }
        
-               # Force session flush with safe umask.
-               my $oldmask=umask(077);
-               $session->flush;
-               umask($oldmask);
-               
-               return;
+       # Auth hooks can sign a user in.
+       if ($do ne 'signin' && ! defined $session->param("name")) {
+               run_hooks(auth => sub {
+                       shift->($q, $session)
+               });
+               if (defined $session->param("name")) {
+                       # Make sure whatever user was authed is in the
+                       # userinfo db.
+                       if (! userinfo_get($session->param("name"), "regdate")) {
+                               userinfo_setall($session->param("name"), {
+                                       email => "",
+                                       password => "",
+                                       regdate => time,
+                               }) || error("failed adding user");
+                       }
+               }
        }
        
-       if ($do eq 'create' || $do eq 'edit') {
-               cgi_editpage($q, $session);
+       if (defined $session->param("name") &&
+           userinfo_get($session->param("name"), "banned")) {
+               print $q->header(-status => "403 Forbidden");
+               $session->delete();
+               print gettext("You are banned.");
+               cgi_savesession($session);
+       }
+
+       run_hooks(sessioncgi => sub { shift->($q, $session) });
+
+       if ($do eq 'signin') {
+               cgi_signin($q, $session);
+               cgi_savesession($session);
        }
        elsif ($do eq 'prefs') {
                cgi_prefs($q, $session);
        }
-       elsif ($do eq 'blog') {
-               my $page=titlepage(lc($q->param('title')));
-               # if the page already exists, munge it to be unique
-               my $from=$q->param('from');
-               my $add="";
-               while (exists $oldpagemtime{"$from/$page$add"}) {
-                       $add=1 unless length $add;
-                       $add++;
-               }
-               $q->param('page', $page.$add);
-               # now run same as create
-               $q->param('do', 'create');
+       elsif ($do eq 'create' || $do eq 'edit') {
                cgi_editpage($q, $session);
        }
+       elsif (defined $session->param("postsignin") || $do eq 'postsignin') {
+               cgi_postsignin($q, $session);
+       }
        else {
                error("unknown do parameter");
        }