]> git.vanrenterghem.biz Git - git.ikiwiki.info.git/blobdiff - IkiWiki/CGI.pm
deal with http:// part
[git.ikiwiki.info.git] / IkiWiki / CGI.pm
index 4c15be0aeecb09221d27863ceb580d55f759d66e..d23cf5d02236e059255e1f72e292e5ccee11ab2f 100644 (file)
@@ -9,6 +9,18 @@ use Encode;
 
 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 redirect ($$) { #{{{
        my $q=shift;
        my $url=shift;
@@ -33,8 +45,10 @@ sub page_locked ($$;$) { #{{{
                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.");
+
+                       error(sprintf(gettext("%s is locked by %s and cannot be edited"),
+                               htmllink("", "", $page, 1),
+                               userlink($admin)));
                }
        }
 
@@ -55,25 +69,46 @@ sub decode_form_utf8 ($) { #{{{
 sub cgi_recentchanges ($) { #{{{
        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};
+       error($@) if $@;
        memoize("htmllink");
 
+       eval q{use Time::Duration};
+       error($@) if $@;
+
+       my $changelog=[rcs_recentchanges(100)];
+       foreach my $change (@$changelog) {
+               $change->{when} = concise(ago($change->{when}));
+
+               $change->{user} = userlink($change->{user});
+
+               my $is_excess = exists $change->{pages}[10]; # limit pages to first 10
+               delete @{$change->{pages}}[10 .. @{$change->{pages}}] if $is_excess;
+               $change->{pages} = [
+                       map {
+                               $_->{link} = htmllink("", "", $_->{page}, 1);
+                               $_;
+                       } @{$change->{pages}}
+               ];
+               push @{$change->{pages}}, { link => '...' } if $is_excess;
+       }
+
        my $template=template("recentchanges.tmpl"); 
        $template->param(
                title => "RecentChanges",
                indexlink => indexlink(),
                wikiname => $config{wikiname},
-               changelog => [rcs_recentchanges(100)],
-               styleurl => styleurl(),
-               baseurl => "$config{url}/",
+               changelog => $changelog,
+               baseurl => baseurl(),
        );
-       print $q->header(-charset=>'utf-8'), $template->output;
+       run_hooks(pagetemplate => sub {
+               shift->(page => "", destpage => "", template => $template);
+       });
+       print $q->header(-charset => 'utf-8'), $template->output;
 } #}}}
 
 sub cgi_signin ($$) { #{{{
@@ -81,18 +116,12 @@ sub cgi_signin ($$) { #{{{
        my $session=shift;
 
        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,
                charset => "utf-8",
                method => 'POST',
-               validate => {
-                       confirm_password => {
-                               perl => q{eq $form->field("password")},
-                       },
-                       email => 'EMAIL',
-               },
                required => 'NONE',
                javascript => 0,
                params => $q,
@@ -100,146 +129,52 @@ sub cgi_signin ($$) { #{{{
                header => 0,
                template => (-e "$config{templatedir}/signin.tmpl" ?
                             {template_params("signin.tmpl")} : ""),
-               stylesheet => styleurl(),
+               stylesheet => baseurl()."style.css",
        );
-               
-       decode_form_utf8($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) {
-               $form->text("You need to log in first.");
+               $form->text(gettext("You need to log in first."));
        }
        
-       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);
-               }
+       run_hooks(formbuilder_setup => sub {
+               shift->(form => $form, cgi => $q, session => $session);
+       });
        
-               # 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");
-                               },
-                       );
-               }
+       decode_form_utf8($form);
+
+       if (exists $hooks{formbuilder}) {
+               run_hooks(formbuilder => sub {
+                       shift->(form => $form, cgi => $q, session => $session,
+                               buttons => $buttons);
+               });
        }
        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 => $session->param("name"));
+               if ($form->submitted) {
+                       $form->validate;
                }
+               printheader($session);
+               print misctemplate($form->title, $form->render(submit => $buttons));
        }
+} #}}}
 
-       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"]));
-               }
+sub cgi_postsignin ($$) { #{{{
+       my $q=shift;
+       my $session=shift;
+
+       # Continue with whatever was being done before the signin process.
+       if (defined $q->param("do") && $q->param("do") ne "signin" &&
+           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, $form->render(submit => ["Login", "Register", "Mail Password"]));
+               redirect($q, $config{url});
        }
 } #}}}
 
@@ -248,17 +183,13 @@ sub cgi_prefs ($$) { #{{{
        my $session=shift;
 
        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)],
                header => 0,
                charset => "utf-8",
                method => 'POST',
                validate => {
-                       confirm_password => {
-                               perl => q{eq $form->field("password")},
-                       },
                        email => 'EMAIL',
                },
                required => 'NONE',
@@ -267,25 +198,28 @@ sub cgi_prefs ($$) { #{{{
                action => $config{cgiurl},
                template => (-e "$config{templatedir}/prefs.tmpl" ?
                             {template_params("prefs.tmpl")} : ""),
-               stylesheet => styleurl(),
+               stylesheet => baseurl()."style.css",
        );
-       my @buttons=("Save Preferences", "Logout", "Cancel");
+       my $buttons=["Save Preferences", "Logout", "Cancel"];
+
+       run_hooks(formbuilder_setup => sub {
+               shift->(form => $form, cgi => $q, session => $session);
+       });
        
-       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 => "email", size => 50);
        $form->field(name => "subscriptions", size => 50,
                comment => "(".htmllink("", "", "PageSpec", 1).")");
        $form->field(name => "locked_pages", size => 50,
                comment => "(".htmllink("", "", "PageSpec", 1).")");
+       $form->field(name => "banned_users", size => 50);
        
+       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"));
@@ -293,6 +227,10 @@ sub cgi_prefs ($$) { #{{{
                        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);
@@ -306,26 +244,42 @@ sub cgi_prefs ($$) { #{{{
                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)) {
+       elsif ($form->submitted eq 'Save Preferences' && $form->validate) {
+               foreach my $field (qw(email subscriptions locked_pages)) {
+                       if (defined $form->field($field) && length $form->field($field)) {
                                userinfo_set($user_name, $field, $form->field($field)) || error("failed to set $field");
                        }
                }
-               $form->text("Preferences saved.");
+               if (is_admin($user_name)) {
+                       set_banned_users(grep { ! is_admin($_) }
+                                       split(' ', $form->field("banned_users")));
+               }
+               $form->text(gettext("Preferences saved."));
        }
        
-       print $session->header(-charset=>'utf-8');
-       print misctemplate($form->title, $form->render(submit => \@buttons));
+       if (exists $hooks{formbuilder}) {
+               run_hooks(formbuilder => sub {
+                       shift->(form => $form, cgi => $q, session => $session,
+                               buttons => $buttons);
+               });
+       }
+       else {
+               printheader($session);
+               print misctemplate($form->title, $form->render(submit => $buttons));
+       }
 } #}}}
 
 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");
+       
        eval q{use CGI::FormBuilder};
+       error($@) if $@;
        my $form = CGI::FormBuilder->new(
-               fields => [qw(do rcsinfo subpage from page type editcontent comments)],
+               fields => \@fields,
                header => 1,
                charset => "utf-8",
                method => 'POST',
@@ -337,9 +291,13 @@ sub cgi_editpage ($$) { #{{{
                params => $q,
                action => $config{cgiurl},
                table => 0,
-               template => {template_params("editpage.tmpl")},
+               template => (-e "$config{templatedir}/editpage.tmpl" ?
+                               {template_params("editpage.tmpl")} : ""),
        );
-       my @buttons=("Save Page", "Preview", "Cancel");
+       
+       run_hooks(formbuilder_setup => sub {
+               shift->(form => $form, cgi => $q, session => $session);
+       });
        
        decode_form_utf8($form);
        
@@ -347,8 +305,7 @@ sub cgi_editpage ($$) { #{{{
        # characters.
        my ($page)=$form->field('page');
        $page=titlepage(possibly_foolish_untaint($page));
-       if (! defined $page || ! length $page ||
-           $page=~/$config{wiki_file_prune_regexp}/ || $page=~/^\//) {
+       if (! defined $page || ! length $page || file_pruned($page, $config{srcdir}) || $page=~/^\//) {
                error("bad page name");
        }
        
@@ -394,27 +351,37 @@ sub cgi_editpage ($$) { #{{{
        $form->tmpl_param("indexlink", indexlink());
        $form->tmpl_param("helponformattinglink",
                htmllink("", "", "HelpOnFormatting", 1));
-       $form->tmpl_param("styleurl", styleurl());
-       $form->tmpl_param("baseurl", "$config{url}/");
+       $form->tmpl_param("baseurl", baseurl());
        if (! $form->submitted) {
                $form->field(name => "rcsinfo", value => rcs_prepedit($file),
                        force => 1);
        }
        
        if ($form->submitted eq "Cancel") {
-               redirect($q, "$config{url}/".htmlpage($page));
+               if ($newfile && defined $from) {
+                       redirect($q, "$config{url}/".htmlpage($from));
+               }
+               elsif ($newfile) {
+                       redirect($q, $config{url});
+               }
+               else {
+                       redirect($q, "$config{url}/".htmlpage($page));
+               }
                return;
        }
        elsif ($form->submitted eq "Preview") {
-               require IkiWiki::Render;
                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);
+               $config{rss}=$config{atom}=0; # avoid preview writing a feed!
                $form->tmpl_param("page_preview",
-                       htmlize($type, linkify($page, $page, filter($page, $content))));
+                       htmlize($page, $type,
+                       linkify($page, "",
+                       preprocess($page, $page,
+                       filter($page, $content)))));
        }
        else {
                $form->tmpl_param("page_preview", "");
@@ -428,7 +395,7 @@ sub cgi_editpage ($$) { #{{{
                        my $best_loc;
                        if (! defined $from || ! length $from ||
                            $from ne $form->field('from') ||
-                           $from=~/$config{wiki_file_prune_regexp}/ ||
+                           file_pruned($from, $config{srcdir}) ||
                            $from=~/^\// ||
                            $form->submitted eq "Preview") {
                                @page_locs=$best_loc=$page;
@@ -438,7 +405,7 @@ sub cgi_editpage ($$) { #{{{
                                $dir=~s![^/]+/+$!!;
                                
                                if ((defined $form->field('subpage') && length $form->field('subpage')) ||
-                                   $page eq 'discussion') {
+                                   $page eq gettext('discussion')) {
                                        $best_loc="$from/$page";
                                }
                                else {
@@ -452,6 +419,8 @@ sub cgi_editpage ($$) { #{{{
                                        push @page_locs, $dir.$page;
                                }
                        }
+                       push @page_locs, "$config{userdir}/$page"
+                               if length $config{userdir};
 
                        @page_locs = grep {
                                ! exists $pagecase{lc $_} &&
@@ -475,7 +444,7 @@ sub cgi_editpage ($$) { #{{{
                                options => \@page_locs, value => $best_loc);
                        $form->field(name => "type", type => 'select',
                                options => \@page_types);
-                       $form->title("creating ".pagetitle($page));
+                       $form->title(sprintf(gettext("creating %s"), pagetitle($page)));
                }
                elsif ($form->field("do") eq "edit") {
                        page_locked($page, $session);
@@ -492,7 +461,7 @@ sub cgi_editpage ($$) { #{{{
                        $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);
@@ -507,20 +476,13 @@ sub cgi_editpage ($$) { #{{{
                $content=~s/\r/\n/g;
                writefile($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');
-               }
-               
                if ($config{rcs}) {
+                       my $message="";
+                       if (defined $form->field('comments') &&
+                           length $form->field('comments')) {
+                               $message=$form->field('comments');
+                       }
+                       
                        if ($newfile) {
                                rcs_add($file);
                        }
@@ -529,7 +491,8 @@ sub cgi_editpage ($$) { #{{{
                        # presumably the commit will trigger an update
                        # of the wiki
                        my $conflict=rcs_commit($file, $message,
-                               $form->field("rcsinfo"));
+                               $form->field("rcsinfo"),
+                               $session->param("name"), $ENV{REMOTE_ADDR});
                
                        if (defined $conflict) {
                                $form->field(name => "rcsinfo", value => rcs_prepedit($file),
@@ -541,7 +504,7 @@ sub cgi_editpage ($$) { #{{{
                                $form->tmpl_param("page_select", 0);
                                $form->field(name => "page", type => 'hidden');
                                $form->field(name => "type", type => 'hidden');
-                               $form->title("editing $page");
+                               $form->title(sprintf(gettext("editing %s"), $page));
                                print $form->render(submit => \@buttons);
                                return;
                        }
@@ -558,14 +521,42 @@ sub cgi_editpage ($$) { #{{{
        }
 } #}}}
 
-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 $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 = $q->cgi_error;
@@ -585,27 +576,55 @@ sub cgi () { #{{{
        elsif ($do eq 'hyperestraier') {
                cgi_hyperestraier();
        }
+
+       # Need to lock the wiki before getting a session.
+       lockwiki();
        
-       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);
+       if (! $session) {
+               $session=cgi_getsession($q);
+       }
        
+       # 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,
+                               });
+                       }
+               }
+       }
+
        # Everything below this point needs the user to be signed in.
-       if ((! $config{anonok} &&
+       if (((! $config{anonok} || $do eq 'prefs') &&
             (! defined $session->param("name") ||
-            ! userinfo_get($session->param("name"), "regdate"))) || $do eq 'signin') {
+            ! userinfo_get($session->param("name"), "regdate")))
+            || $do eq 'signin') {
+               if ($do ne 'signin' && ! defined $session->param("postsignin")) {
+                       $session->param(postsignin => $ENV{QUERY_STRING});
+               }
                cgi_signin($q, $session);
-       
-               # Force session flush with safe umask.
-               my $oldmask=umask(077);
-               $session->flush;
-               umask($oldmask);
-               
+               cgi_savesession($session);
                return;
        }
+       elsif (defined $session->param("postsignin")) {
+               cgi_postsignin($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);
+               exit;
+       }
        
        if ($do eq 'create' || $do eq 'edit') {
                cgi_editpage($q, $session);
@@ -615,6 +634,7 @@ sub cgi () { #{{{
        }
        elsif ($do eq 'blog') {
                my $page=titlepage(decode_utf8($q->param('title')));
+               $page=~s/(\/)/"__".ord($1)."__"/eg; # escape slashes too
                # if the page already exists, munge it to be unique
                my $from=$q->param('from');
                my $add="";
@@ -632,4 +652,32 @@ sub cgi () { #{{{
        }
 } #}}}
 
+sub userlink ($) { #{{{
+       my $user=shift;
+
+       eval q{use CGI 'escapeHTML'};
+       error($@) if $@;
+       if ($user =~ m!^https?://! &&
+           eval q{use Net::OpenID::VerifiedIdentity; 1} && !$@) {
+               # Munge user-urls, as used by eg, OpenID.
+               my $oid=Net::OpenID::VerifiedIdentity->new(identity => $user);
+               my $display=$oid->display;
+               # Convert "user.somehost.com" to "user [somehost.com]".
+               if ($display !~ /\[/) {
+                       $display=~s/^(.*?)\.([^.]+\.[a-z]+)$/$1 [$2]/;
+               }
+               # Convert "http://somehost.com/user" to "user [somehost.com]".
+               if ($display !~ /\[/) {
+                       $display=~s/^https?:\/\/(.+)\/[^\/](.+)$/$2 [$1]/;
+               }
+               $display=~s!^https?://!!; # make sure this is removed
+               return "<a href=\"$user\">".escapeHTML($display)."</a>";
+       }
+       else {
+               return htmllink("", "", escapeHTML(
+                       length $config{userdir} ? $config{userdir}."/".$user : $user
+               ), 1);
+       }
+} #}}}
+
 1