web commit by http://madduck.net/

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

diff --git a/IkiWiki/CGI.pm b/IkiWiki/CGI.pm
index f69f02a15af2396d51c3e116ada1cb8be3652d22..042e168aa8dc501613746ea3af45b2ecbbc4fafa 100644 (file)
--- a/IkiWiki/CGI.pm
+++ b/IkiWiki/CGI.pm
@@ -9,6 +9,35 @@ use Encode;
 
 package IkiWiki;
 
 
 package IkiWiki;
 

+sub printheader ($) { #{{{
+       my $session=shift;
+       
+       if ($config{sslcookie}) {
+               print $session->header(-charset => 'utf-8',
+                       -cookie => $session->cookie(-secure => 1));
+       } else {
+               print $session->header(-charset => 'utf-8');
+       }
+
+} #}}}
+
+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 ($$) { #{{{
        my $q=shift;
        my $url=shift;
 sub redirect ($$) { #{{{
        my $q=shift;
        my $url=shift;


@@ -21,225 +50,109 @@ sub redirect ($$) { #{{{
        }
 } #}}}
 
        }
 } #}}}
 

-sub page_locked ($$;$) { #{{{
+sub check_canedit ($$$;$) { #{{{

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

+       my $q=shift;

        my $session=shift;
        my $nonfatal=shift;
        
        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 (pagespec_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.");
+       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 0;
+       });
+       return $canedit;

 } #}}}
 
 } #}}}
 

-sub decode_form_utf8 ($) { #{{{
-       my $form = shift;
-       foreach my $f ($form->field) {
-               next if Encode::is_utf8(scalar $form->field($f));
-               $form->field(name  => $f,
-                            value => decode_utf8($form->field($f)),
-                            force => 1,
-                           );
+sub decode_cgi_utf8 ($) { #{{{
+       my $cgi = shift;
+       foreach my $f ($cgi->param) {
+               $cgi->param($f, map { decode_utf8 $_ } $cgi->param($f));

        }
 } #}}}
 
        }
 } #}}}
 

-sub cgi_recentchanges ($) { #{{{
+# 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 $q=shift;

-       
-       unlockwiki();
-
-       # Optimisation: building recentchanges means calculating lots of
-       # links. Memoizing htmllink speeds it up a lot (can't be memoized
-       # during page builds as the return values may change, but they
-       # won't here.)
-       eval q{use Memoize};
-       memoize("htmllink");
-
-       my $template=template("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 $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;
 
 
 sub cgi_signin ($$) { #{{{
        my $q=shift;
        my $session=shift;
 

+       decode_cgi_utf8($q);

        eval q{use CGI::FormBuilder};
        eval q{use CGI::FormBuilder};

+       error($@) if $@;

        my $form = CGI::FormBuilder->new(
                title => "signin",
        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',
                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,
                required => 'NONE',
                javascript => 0,
                params => $q,
                action => $config{cgiurl},
                header => 0,

-               template => (-e "$config{templatedir}/signin.tmpl" ?
-                            {template_params("signin.tmpl")} : ""),
-               stylesheet => styleurl(),
+               template => {type => 'div'},
+               stylesheet => baseurl()."style.css",

        );
        );

-               
-       decode_form_utf8($form);
+       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->submitted) {
        if ($q->param("do") ne "signin" && !$form->submitted) {

-               $form->text("You need to log in first.");
+               $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 ($form->submitted) {
        if ($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") && 
-                           $form->field("do") ne 'signin') {
-                               redirect($q, cgiurl(
-                                       do => $form->field("do"),
-                                       page => $form->field("page"),
-                                       title => $form->field("title"),
-                                       subpage => $form->field("subpage"),
-                                       from => $form->field("from"),
-                               ));
-                       }
-                       else {
-                               redirect($q, $config{url});
-                       }
-               }
-               elsif ($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=template("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 {
        }
        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?"));

        }
 } #}}}
 
        }
 } #}}}
 


@@ -247,56 +160,58 @@ sub cgi_prefs ($$) { #{{{
        my $q=shift;
        my $session=shift;
 
        my $q=shift;
        my $session=shift;
 

+       needsignin($q, $session);
+
+       decode_cgi_utf8($q);

        eval q{use CGI::FormBuilder};
        eval q{use CGI::FormBuilder};

+       error($@) if $@;

        my $form = CGI::FormBuilder->new(
                title => "preferences",
        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 => {
                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},
                        email => 'EMAIL',
                },
                required => 'NONE',
                javascript => 0,
                params => $q,
                action => $config{cgiurl},

-               template => (-e "$config{templatedir}/prefs.tmpl" ?
-                            {template_params("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 => "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("", "", "PageSpec", 1).")");
-       $form->field(name => "locked_pages", size => 50,
-               comment => "(".htmllink("", "", "PageSpec", 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($user_name)) {
        if (! is_admin($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"));
        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()));
+               }

        }
        
        }
        

-       decode_form_utf8($form);
-       

        if ($form->submitted eq 'Logout') {
                $session->delete();
                redirect($q, $config{url});
        if ($form->submitted eq 'Logout') {
                $session->delete();
                redirect($q, $config{url});


@@ -306,52 +221,63 @@ sub cgi_prefs ($$) { #{{{
                redirect($q, $config{url});
                return;
        }
                redirect($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;
 
 } #}}}
 
 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};
        eval q{use CGI::FormBuilder};

+       error($@) if $@;

        my $form = CGI::FormBuilder->new(
        my $form = CGI::FormBuilder->new(

-               fields => [qw(do rcsinfo subpage from page type editcontent comments)],
-               header => 1,
+               title => "editpage",
+               fields => \@fields,

                charset => "utf-8",
                method => 'POST',
                charset => "utf-8",
                method => 'POST',

-               validate => {
-                       editcontent => '/.+/',
-               },

                required => [qw{editcontent}],
                javascript => 0,
                params => $q,
                action => $config{cgiurl},
                required => [qw{editcontent}],
                javascript => 0,
                params => $q,
                action => $config{cgiurl},

+               header => 0,

                table => 0,
                table => 0,

-               template => {template_params("editpage.tmpl")},
+               template => scalar template_params("editpage.tmpl"),
+               wikiname => $config{wikiname},

        );
        );

-       my @buttons=("Save Page", "Preview", "Cancel");

        
        

-       decode_form_utf8($form);
+       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 ($page)=$form->field('page');
        
        # This untaint is safe because titlepage removes any problematic
        # characters.
        my ($page)=$form->field('page');

-       $page=titlepage(possibly_foolish_untaint(lc($page)));
+       $page=titlepage(possibly_foolish_untaint($page));

        if (! defined $page || ! length $page ||
        if (! defined $page || ! length $page ||

-           $page=~/$config{wiki_file_prune_regexp}/ || $page=~/^\//) {
+           file_pruned($page, $config{srcdir}) || $page=~/^\//) {

                error("bad page name");
        }
                error("bad page name");
        }

-       $page=lc($page);
+
+       my $baseurl=$config{url}."/".htmlpage($page);

        
        my $from;
        if (defined $form->field('from')) {
        
        my $from;
        if (defined $form->field('from')) {


@@ -359,36 +285,41 @@ sub cgi_editpage ($$) { #{{{
        }
        
        my $file;
        }
        
        my $file;

-       my $type;       
-       if (exists $pagesources{$page}) {
+       my $type;
+       if (exists $pagesources{$page} && $form->field("do") ne "create") {

                $file=$pagesources{$page};
                $type=pagetype($file);
                $file=$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 => '/.*/');

        }
        else {
                $type=$form->param('type');
                if (defined $type && length $type && $hooks{htmlize}{$type}) {
                        $type=possibly_foolish_untaint($type);
                }
        }
        else {
                $type=$form->param('type');
                if (defined $type && length $type && $hooks{htmlize}{$type}) {
                        $type=possibly_foolish_untaint($type);
                }

-               elsif (defined $from) {
+               elsif (defined $from && exists $pagesources{$from}) {

                        # favor the type of linking page
                        $type=pagetype($pagesources{$from});
                }
                        # favor the type of linking page
                        $type=pagetype($pagesources{$from});
                }

-               else {
-                       $type=$config{default_pageext};
-               }
+               $type=$config{default_pageext} unless defined $type;

                $file=$page.".".$type;
                $file=$page.".".$type;

-       }
-
-       my $newfile=0;
-       if (! -e "$config{srcdir}/$file") {
-               $newfile=1;
+               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 => "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,
        $form->field(name => "type", value => $type, force => 1);
        $form->field(name => "comments", type => "text", size => 80);
        $form->field(name => "editcontent", type => "textarea", rows => 20,


@@ -396,42 +327,52 @@ sub cgi_editpage ($$) { #{{{
        $form->tmpl_param("can_commit", $config{rcs});
        $form->tmpl_param("indexlink", indexlink());
        $form->tmpl_param("helponformattinglink",
        $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") {
        
        if ($form->submitted eq "Cancel") {

-               redirect($q, "$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 ($form->submitted eq "Preview") {
                return;
        }
        elsif ($form->submitted eq "Preview") {

-               require IkiWiki::Render;

                my $content=$form->field('editcontent');
                my $content=$form->field('editcontent');

-               my $comments=$form->field('comments');
-               $form->field(name => "editcontent",
-                               value => $content, force => 1);
-               $form->field(name => "comments",
-                               value => $comments, force => 1);
+               run_hooks(editcontent => sub {
+                       $content=shift->(
+                               content => $content,
+                               page => $page,
+                               cgi => $q,
+                               session => $session,
+                       );
+               });

                $form->tmpl_param("page_preview",
                $form->tmpl_param("page_preview",

-                       htmlize($type, linkify($page, $page, filter($page, $content))));
-       }
-       else {
+                       htmlize($page, $type,
+                       linkify($page, $page,
+                       preprocess($page, $page,
+                       filter($page, $page, $content), 0, 1))));
+               # previewing may have created files on disk
+               saveindex();
+       }
+       elsif ($form->submitted eq "Save Page") {

                $form->tmpl_param("page_preview", "");
        }
        $form->tmpl_param("page_conflict", "");
        
                $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;
                        if (! defined $from || ! length $from ||
                            $from ne $form->field('from') ||
                if ($form->field("do") eq "create") {
                        my @page_locs;
                        my $best_loc;
                        if (! defined $from || ! length $from ||
                            $from ne $form->field('from') ||

-                           $from=~/$config{wiki_file_prune_regexp}/ ||
+                           file_pruned($from, $config{srcdir}) ||

                            $from=~/^\// ||
                            $form->submitted eq "Preview") {
                                @page_locs=$best_loc=$page;
                            $from=~/^\// ||
                            $form->submitted eq "Preview") {
                                @page_locs=$best_loc=$page;


@@ -441,7 +382,7 @@ sub cgi_editpage ($$) { #{{{
                                $dir=~s![^/]+/+$!!;
                                
                                if ((defined $form->field('subpage') && length $form->field('subpage')) ||
                                $dir=~s![^/]+/+$!!;
                                
                                if ((defined $form->field('subpage') && length $form->field('subpage')) ||

-                                   $page eq 'discussion') {
+                                   $page eq gettext('discussion')) {

                                        $best_loc="$from/$page";
                                }
                                else {
                                        $best_loc="$from/$page";
                                }
                                else {


@@ -454,39 +395,59 @@ sub cgi_editpage ($$) { #{{{
                                        $dir=~s![^/]+/+$!!;
                                        push @page_locs, $dir.$page;
                                }
                                        $dir=~s![^/]+/+$!!;
                                        push @page_locs, $dir.$page;
                                }

+                       
+                               push @page_locs, "$config{userdir}/$page"
+                                       if length $config{userdir};

                        }
 
                        @page_locs = grep {
                        }
 
                        @page_locs = grep {

-                               ! exists $pagesources{lc($_)} &&
-                               ! page_locked($_, $session, 1)
+                               ! exists $pagecase{lc $_}

                        } @page_locs;
                        } @page_locs;

-                       

                        if (! @page_locs) {
                                # hmm, someone else made the page in the
                                # meantime?
                        if (! @page_locs) {
                                # hmm, someone else made the page in the
                                # meantime?

-                               redirect($q, "$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}) {
                        }
                        
                        my @page_types;
                        if (exists $hooks{htmlize}) {

-                               @page_types=keys %{$hooks{htmlize}};
+                               @page_types=grep { !/^_/ }
+                                       keys %{$hooks{htmlize}};

                        }
                        
                        $form->tmpl_param("page_select", 1);
                        $form->field(name => "page", type => 'select',
                        }
                        
                        $form->tmpl_param("page_select", 1);
                        $form->field(name => "page", type => 'select',

-                               options => \@page_locs, value => $best_loc);
+                               options => [ map { pagetitle($_, 1) } @editable_locs ],
+                               value => pagetitle($best_loc, 1));

                        $form->field(name => "type", type => 'select',
                                options => \@page_types);
                        $form->field(name => "type", type => 'select',
                                options => \@page_types);

-                       $form->title("creating ".pagetitle($page));
+                       $form->title(sprintf(gettext("creating %s"), pagetitle($page)));
+                       

                }
                elsif ($form->field("do") eq "edit") {
                }
                elsif ($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 (! 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,
                                        $content=~s/\n/\r\n/g;
                                }
                                $form->field(name => "editcontent", value => $content,


@@ -495,80 +456,162 @@ sub cgi_editpage ($$) { #{{{
                        $form->tmpl_param("page_select", 0);
                        $form->field(name => "page", type => 'hidden');
                        $form->field(name => "type", type => 'hidden');
                        $form->tmpl_param("page_select", 0);
                        $form->field(name => "page", type => 'hidden');
                        $form->field(name => "type", type => 'hidden');

-                       $form->title("editing ".pagetitle($page));
+                       $form->title(sprintf(gettext("editing %s"), pagetitle($page)));

                }
                
                }
                

-               print $form->render(submit => \@buttons);
+               showform($form, \@buttons, $session, $q, forcebaseurl => $baseurl);

        }
        else {
                # save page
        }
        else {
                # save page

-               page_locked($page, $session);
+               check_canedit($page, $q, $session);
+
+               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 => $baseurl);
+                       return;
+               }
+               elsif ($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;
+               }

                
                my $content=$form->field('editcontent');
                
                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=~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");
-               }
-               else {
-                       $message.="from $ENV{REMOTE_ADDR}";
-               }
-               if (defined $form->field('comments') &&
-                   length $form->field('comments')) {
-                       $message.=": ".$form->field('comments');
+               $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 ($config{rcs}) {
                if ($config{rcs}) {

-                       if ($newfile) {
+                       my $message="";
+                       if (defined $form->field('comments') &&
+                           length $form->field('comments')) {
+                               $message=$form->field('comments');
+                       }
+                       
+                       if (! $exists) {

                                rcs_add($file);
                        }
                                rcs_add($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 => $form->field('comments'), force => 1);
-                               $form->field("do", "edit)");
-                               $form->tmpl_param("page_select", 0);
-                               $form->field(name => "page", type => 'hidden');
-                               $form->field(name => "type", 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 {
                }
                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.
-               redirect($q, "$config{url}/".htmlpage($page)."?updated");

        }
 } #}}}
 
        }
 } #}}}
 

-sub cgi () { #{{{
-       eval q{use CGI};
+sub cgi_getsession ($) { #{{{
+       my $q=shift;
+

        eval q{use CGI::Session};
        eval q{use CGI::Session};

+       CGI::Session->name("ikiwiki_session_".encode_utf8($config{wikiname}));

        
        

-       my $q=CGI->new;
+       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 $@;

        
        

-       run_hooks(cgi => sub { shift->($q) });
+               $q=CGI->new;

        
        

+               run_hooks(cgi => sub { shift->($q) });
+       }
+

        my $do=$q->param('do');
        if (! defined $do || ! length $do) {
                my $error = $q->cgi_error;
        my $do=$q->param('do');
        if (! defined $do || ! length $do) {
                my $error = $q->cgi_error;


@@ -580,56 +623,55 @@ sub cgi () { #{{{
                }
        }
        
                }
        }
        

-       # Things that do not need a session.
-       if ($do eq 'recentchanges') {
-               cgi_recentchanges($q);
-               return;
-       }
-       elsif ($do eq 'hyperestraier') {
-               cgi_hyperestraier();
-       }
-       
-       CGI::Session->name("ikiwiki_session_$config{wikiname}");
+       # Need to lock the wiki before getting a session.
+       lockwiki();
+       loadindex();

        
        

-       my $oldmask=umask(077);
-       my $session = CGI::Session->new("driver:DB_File", $q,
-               { FileName => "$config{wikistatedir}/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);
+       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 '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, $session);
        }
                cgi_editpage($q, $session);
        }

+       elsif (defined $session->param("postsignin") || $do eq 'postsignin') {
+               cgi_postsignin($q, $session);
+       }

        else {
                error("unknown do parameter");
        }
        else {
                error("unknown do parameter");
        }