ikiwiki/IkiWiki/CGI.pm

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#!/usr/bin/perl
use warnings;
use strict;
use IkiWiki;
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use IkiWiki::UserInfo;
use open qw{:utf8 :std};
use Encode;
package IkiWiki;
sub redirect ($$) { #{{{
my $q=shift;
my $url=shift;
if (! $config{w3mmode}) {
print $q->redirect($url);
}
else {
print "Content-type: text/plain\n";
print "W3m-control: GOTO $url\n\n";
}
} #}}}
sub page_locked ($$;$) { #{{{
my $page=shift;
my $session=shift;
my $nonfatal=shift;
my $user=$session->param("name");
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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("", "", $admin, 1)." and cannot be edited.");
}
}
return 0;
} #}}}
sub decode_form_utf8 ($) { #{{{
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($f)),
force => 1,
);
}
} #}}}
sub cgi_recentchanges ($) { #{{{
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};
memoize("htmllink");
my $template=template("recentchanges.tmpl");
$template->param(
title => "RecentChanges",
indexlink => indexlink(),
wikiname => $config{wikiname},
changelog => [rcs_recentchanges(100)],
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styleurl => styleurl(),
baseurl => "$config{url}/",
);
print $q->header(-charset=>'utf-8'), $template->output;
} #}}}
sub cgi_signin ($$) { #{{{
my $q=shift;
my $session=shift;
eval q{use CGI::FormBuilder};
my $form = CGI::FormBuilder->new(
title => "signin",
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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,
action => $config{cgiurl},
header => 0,
template => (-e "$config{templatedir}/signin.tmpl" ?
{template_params("signin.tmpl")} : ""),
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stylesheet => styleurl(),
);
decode_form_utf8($form);
$form->field(name => "name", required => 0);
$form->field(name => "do", type => "hidden");
$form->field(name => "page", type => "hidden");
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$form->field(name => "title", type => "hidden");
$form->field(name => "from", type => "hidden");
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$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.");
}
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"));
}
}
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"),
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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"]));
}
}
else {
print $session->header(-charset=>'utf-8');
print misctemplate($form->title, $form->render(submit => ["Login", "Register", "Mail Password"]));
}
} #}}}
sub cgi_prefs ($$) { #{{{
my $q=shift;
my $session=shift;
eval q{use CGI::FormBuilder};
my $form = CGI::FormBuilder->new(
title => "preferences",
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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',
javascript => 0,
params => $q,
action => $config{cgiurl},
template => (-e "$config{templatedir}/prefs.tmpl" ?
{template_params("prefs.tmpl")} : ""),
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stylesheet => styleurl(),
);
my @buttons=("Save Preferences", "Logout", "Cancel");
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");
$form->field(name => "confirm_password", type => "password");
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$form->field(name => "subscriptions", size => 50,
comment => "(".htmllink("", "", "PageSpec", 1).")");
$form->field(name => "locked_pages", size => 50,
comment => "(".htmllink("", "", "PageSpec", 1).")");
if (! is_admin($user_name)) {
$form->field(name => "locked_pages", type => "hidden");
}
if (! $form->submitted) {
$form->field(name => "email", force => 1,
value => userinfo_get($user_name, "email"));
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$form->field(name => "subscriptions", force => 1,
value => userinfo_get($user_name, "subscriptions"));
$form->field(name => "locked_pages", force => 1,
value => userinfo_get($user_name, "locked_pages"));
}
decode_form_utf8($form);
if ($form->submitted eq 'Logout') {
$session->delete();
redirect($q, $config{url});
return;
}
elsif ($form->submitted eq 'Cancel') {
redirect($q, $config{url});
return;
}
elsif ($form->submitted eq "Save Preferences" && $form->validate) {
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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");
}
}
$form->text("Preferences saved.");
}
print $session->header(-charset=>'utf-8');
print misctemplate($form->title, $form->render(submit => \@buttons));
} #}}}
sub cgi_editpage ($$) { #{{{
my $q=shift;
my $session=shift;
eval q{use CGI::FormBuilder};
my $form = CGI::FormBuilder->new(
fields => [qw(do rcsinfo subpage from page type editcontent comments)],
header => 1,
charset => "utf-8",
method => 'POST',
validate => {
editcontent => '/.+/',
},
required => [qw{editcontent}],
javascript => 0,
params => $q,
action => $config{cgiurl},
table => 0,
template => {template_params("editpage.tmpl")},
);
my @buttons=("Save Page", "Preview", "Cancel");
decode_form_utf8($form);
# This untaint is safe because titlepage removes any problematic
# characters.
my ($page)=$form->field('page');
$page=titlepage(possibly_foolish_untaint($page));
if (! defined $page || ! length $page ||
$page=~/$config{wiki_file_prune_regexp}/ || $page=~/^\//) {
error("bad page name");
}
my $from;
if (defined $form->field('from')) {
($from)=$form->field('from')=~/$config{wiki_file_regexp}/;
}
my $file;
my $type;
if (exists $pagesources{$page}) {
$file=$pagesources{$page};
$type=pagetype($file);
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}
else {
$type=$form->param('type');
if (defined $type && length $type && $hooks{htmlize}{$type}) {
$type=possibly_foolish_untaint($type);
}
elsif (defined $from) {
# favor the type of linking page
$type=pagetype($pagesources{$from});
}
$type=$config{default_pageext} unless defined $type;
$file=$page.".".$type;
}
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my $newfile=0;
if (! -e "$config{srcdir}/$file") {
$newfile=1;
}
$form->field(name => "do", type => 'hidden');
$form->field(name => "from", type => 'hidden');
$form->field(name => "rcsinfo", type => 'hidden');
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$form->field(name => "subpage", type => 'hidden');
$form->field(name => "page", value => $page, 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());
$form->tmpl_param("helponformattinglink",
htmllink("", "", "HelpOnFormatting", 1));
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$form->tmpl_param("styleurl", styleurl());
$form->tmpl_param("baseurl", "$config{url}/");
if (! $form->submitted) {
$form->field(name => "rcsinfo", value => rcs_prepedit($file),
force => 1);
}
if ($form->submitted eq "Cancel") {
redirect($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);
$form->tmpl_param("page_preview",
htmlize($type, linkify($page, $page, filter($page, $content))));
}
else {
$form->tmpl_param("page_preview", "");
}
$form->tmpl_param("page_conflict", "");
if (! $form->submitted || $form->submitted eq "Preview" ||
! $form->validate) {
if ($form->field("do") eq "create") {
my @page_locs;
my $best_loc;
if (! defined $from || ! length $from ||
$from ne $form->field('from') ||
$from=~/$config{wiki_file_prune_regexp}/ ||
$from=~/^\// ||
$form->submitted eq "Preview") {
@page_locs=$best_loc=$page;
}
else {
my $dir=$from."/";
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$dir=~s![^/]+/+$!!;
if ((defined $form->field('subpage') && length $form->field('subpage')) ||
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$page eq 'discussion') {
$best_loc="$from/$page";
}
else {
$best_loc=$dir.$page;
}
push @page_locs, $dir.$page;
push @page_locs, "$from/$page";
while (length $dir) {
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$dir=~s![^/]+/+$!!;
push @page_locs, $dir.$page;
}
}
@page_locs = grep {
! exists $pagecase{lc $_} &&
! page_locked($_, $session, 1)
} @page_locs;
if (! @page_locs) {
# hmm, someone else made the page in the
# meantime?
redirect($q, "$config{url}/".htmlpage($page));
return;
}
my @page_types;
if (exists $hooks{htmlize}) {
@page_types=keys %{$hooks{htmlize}};
}
$form->tmpl_param("page_select", 1);
$form->field(name => "page", type => 'select',
options => \@page_locs, value => $best_loc);
$form->field(name => "type", type => 'select',
options => \@page_types);
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$form->title("creating ".pagetitle($page));
}
elsif ($form->field("do") eq "edit") {
page_locked($page, $session);
if (! defined $form->field('editcontent') ||
! length $form->field('editcontent')) {
my $content="";
if (exists $pagesources{$page}) {
$content=readfile(srcfile($pagesources{$page}));
$content=~s/\n/\r\n/g;
}
$form->field(name => "editcontent", value => $content,
force => 1);
}
$form->tmpl_param("page_select", 0);
$form->field(name => "page", type => 'hidden');
$form->field(name => "type", type => 'hidden');
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$form->title("editing ".pagetitle($page));
}
print $form->render(submit => \@buttons);
}
else {
# save page
page_locked($page, $session);
my $content=$form->field('editcontent');
$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');
}
if ($config{rcs}) {
if ($newfile) {
rcs_add($file);
}
# prevent deadlock with post-commit hook
unlockwiki();
# presumably the commit will trigger an update
# of the wiki
my $conflict=rcs_commit($file, $message,
$form->field("rcsinfo"));
if (defined $conflict) {
$form->field(name => "rcsinfo", value => rcs_prepedit($file),
force => 1);
$form->tmpl_param("page_conflict", 1);
$form->field("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 $form->render(submit => \@buttons);
return;
}
}
else {
require IkiWiki::Render;
refresh();
saveindex();
}
# The trailing question mark tries to avoid broken
# caches and get the most recent version of the page.
redirect($q, "$config{url}/".htmlpage($page)."?updated");
}
} #}}}
sub cgi () { #{{{
eval q{use CGI};
eval q{use CGI::Session};
my $q=CGI->new;
run_hooks(cgi => sub { shift->($q) });
my $do=$q->param('do');
if (! defined $do || ! length $do) {
my $error = $q->cgi_error;
if ($error) {
error("Request not processed: $error");
}
else {
error("\"do\" parameter missing");
}
}
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# Things that do not need a session.
if ($do eq 'recentchanges') {
cgi_recentchanges($q);
return;
}
elsif ($do eq 'hyperestraier') {
cgi_hyperestraier();
}
CGI::Session->name("ikiwiki_session_$config{wikiname}");
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.
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if ((! $config{anonok} &&
(! defined $session->param("name") ||
! userinfo_get($session->param("name"), "regdate"))) || $do eq 'signin') {
cgi_signin($q, $session);
# Force session flush with safe umask.
my $oldmask=umask(077);
$session->flush;
umask($oldmask);
return;
}
if ($do eq 'create' || $do eq 'edit') {
cgi_editpage($q, $session);
}
elsif ($do eq 'prefs') {
cgi_prefs($q, $session);
}
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elsif ($do eq 'blog') {
my $page=titlepage($q->param('title'));
# if the page already exists, munge it to be unique
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my $from=$q->param('from');
my $add="";
while (exists $pagecase{lc "$from/$page$add"}) {
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$add=1 unless length $add;
$add++;
}
$q->param('page', $page.$add);
# now run same as create
$q->param('do', 'create');
cgi_editpage($q, $session);
}
else {
error("unknown do parameter");
}
} #}}}
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