#!/usr/bin/perl
+package IkiWiki;
+
use warnings;
use strict;
use IkiWiki;
use open qw{:utf8 :std};
use Encode;
-package IkiWiki;
-
-sub printheader ($) { #{{{
+sub printheader ($) {
my $session=shift;
if ($config{sslcookie}) {
print $session->header(-charset => 'utf-8',
- -cookie => $session->cookie(-secure => 1));
- } else {
- print $session->header(-charset => 'utf-8');
+ -cookie => $session->cookie(-httponly => 1, -secure => 1));
}
+ else {
+ print $session->header(-charset => 'utf-8',
+ -cookie => $session->cookie(-httponly => 1));
+ }
+}
-} #}}}
-
-sub showform ($$$$) { #{{{
+sub showform ($$$$;@) {
my $form=shift;
my $buttons=shift;
my $session=shift;
}
printheader($session);
- print misctemplate($form->title, $form->render(submit => $buttons));
+ print misctemplate($form->title, $form->render(submit => $buttons), @_);
}
-sub redirect ($$) { #{{{
+sub redirect ($$) {
my $q=shift;
- my $url=shift;
+ eval q{use URI};
+ my $url=URI->new(shift);
if (! $config{w3mmode}) {
print $q->redirect($url);
}
print "Content-type: text/plain\n";
print "W3m-control: GOTO $url\n\n";
}
-} #}}}
+}
-sub check_canedit ($$$;$) { #{{{
- my $page=shift;
- my $q=shift;
- my $session=shift;
- my $nonfatal=shift;
-
- 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;
- $canedit=0;
- }
+sub decode_cgi_utf8 ($) {
+ # decode_form_utf8 method is needed for 5.01
+ if ($] < 5.01) {
+ my $cgi = shift;
+ foreach my $f ($cgi->param) {
+ $cgi->param($f, map { decode_utf8 $_ } $cgi->param($f));
}
- });
- return $canedit;
-} #}}}
-
-sub decode_cgi_utf8 ($) { #{{{
- my $cgi = shift;
- foreach my $f ($cgi->param) {
- $cgi->param($f, map { decode_utf8 $_ } $cgi->param($f));
}
-} #}}}
-
-sub cgi_recentchanges ($) { #{{{
- my $q=shift;
-
- # Optimisation: building recentchanges means calculating lots of
- # links. Memoizing htmllink speeds it up a lot (can't be memoized
- # during page builds as the return values may change, but they
- # won't here.)
- eval q{use Memoize};
- error($@) if $@;
- memoize("htmllink");
-
- eval q{use Time::Duration};
- error($@) if $@;
+}
- my $changelog=[rcs_recentchanges(100)];
- foreach my $change (@$changelog) {
- $change->{when} = concise(ago(time - $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("", "", $_->{page},
- noimageinline => 1,
- linktext => pagetitle($_->{page}));
- $_;
- } @{$change->{pages}}
- ];
- push @{$change->{pages}}, { link => '...' } if $is_excess;
+sub decode_form_utf8 ($) {
+ if ($] >= 5.01) {
+ my $form = shift;
+ foreach my $f ($form->field) {
+ my @value=map { decode_utf8($_) } $form->field($f);
+ $form->field(name => $f,
+ value => \@value,
+ force => 1,
+ );
+ }
}
-
- my $template=template("recentchanges.tmpl");
- $template->param(
- title => "RecentChanges",
- indexlink => indexlink(),
- wikiname => $config{wikiname},
- changelog => $changelog,
- baseurl => baseurl(),
- );
- run_hooks(pagetemplate => sub {
- shift->(page => "", destpage => "", template => $template);
- });
- print $q->header(-charset => 'utf-8'), $template->output;
-} #}}}
+}
# Check if the user is signed in. If not, redirect to the signin form and
# save their place to return to later.
-sub needsignin ($$) { #{{{
+sub needsignin ($$) {
my $q=shift;
my $session=shift;
cgi_savesession($session);
exit;
}
-} #}}}
+}
-sub cgi_signin ($$) { #{{{
+sub cgi_signin ($$) {
my $q=shift;
my $session=shift;
action => $config{cgiurl},
header => 0,
template => {type => 'div'},
- stylesheet => baseurl()."style.css",
+ stylesheet => 1,
);
my $buttons=["Login"];
$form->field(name => "do", type => "hidden", value => "signin",
force => 1);
+ decode_form_utf8($form);
run_hooks(formbuilder_setup => sub {
shift->(form => $form, cgi => $q, session => $session,
buttons => $buttons);
});
+ decode_form_utf8($form);
if ($form->submitted) {
$form->validate;
}
showform($form, $buttons, $session, $q);
-} #}}}
+}
-sub cgi_postsignin ($$) { #{{{
+sub cgi_postsignin ($$) {
my $q=shift;
my $session=shift;
exit;
}
else {
- error(gettext("login failed, perhaps you need to turn on cookies?"));
+ if ($config{sslcookie} && ! $q->https()) {
+ error(gettext("probable misconfiguration: sslcookie is set, but you are attempting to login via http, not https"));
+ }
+ else {
+ error(gettext("login failed, perhaps you need to turn on cookies?"));
+ }
}
-} #}}}
+}
-sub cgi_prefs ($$) { #{{{
+sub cgi_prefs ($$) {
my $q=shift;
my $session=shift;
needsignin($q, $session);
-
decode_cgi_utf8($q);
+
+ # The session id is stored on the form and checked to
+ # guard against CSRF.
+ my $sid=$q->param('sid');
+ if (! defined $sid) {
+ $q->delete_all;
+ }
+ elsif ($sid ne $session->id) {
+ error(gettext("Your login session has expired."));
+ }
+
eval q{use CGI::FormBuilder};
error($@) if $@;
my $form = CGI::FormBuilder->new(
params => $q,
action => $config{cgiurl},
template => {type => 'div'},
- stylesheet => baseurl()."style.css",
+ stylesheet => 1,
fieldsets => [
[login => gettext("Login")],
[preferences => gettext("Preferences")],
],
);
my $buttons=["Save Preferences", "Logout", "Cancel"];
-
+
+ decode_form_utf8($form);
run_hooks(formbuilder_setup => sub {
shift->(form => $form, cgi => $q, session => $session,
buttons => $buttons);
});
+ decode_form_utf8($form);
- $form->field(name => "do", type => "hidden");
+ $form->field(name => "do", type => "hidden", value => "prefs",
+ force => 1);
+ $form->field(name => "sid", type => "hidden", value => $session->id,
+ force => 1);
$form->field(name => "email", size => 50, fieldset => "preferences");
- $form->field(name => "banned_users", size => 50,
- fieldset => "admin");
my $user_name=$session->param("name");
- if (! is_admin($user_name)) {
- $form->field(name => "banned_users", type => "hidden");
- }
if (! $form->submitted) {
$form->field(name => "email", force => 1,
value => userinfo_get($user_name, "email"));
- if (is_admin($user_name)) {
- $form->field(name => "banned_users", force => 1,
- value => join(" ", get_banned_users()));
- }
}
if ($form->submitted eq 'Logout') {
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");
- }
+
$form->text(gettext("Preferences saved."));
}
showform($form, $buttons, $session, $q);
-} #}}}
+}
-sub cgi_editpage ($$) { #{{{
+sub cgi_custom_failure ($$$) {
my $q=shift;
- my $session=shift;
+ my $httpstatus=shift;
+ my $message=shift;
- my @fields=qw(do rcsinfo subpage from page type editcontent comments);
- my @buttons=("Save Page", "Preview", "Cancel");
-
- decode_cgi_utf8($q);
- eval q{use CGI::FormBuilder};
- error($@) if $@;
- my $form = CGI::FormBuilder->new(
- title => "editpage",
- fields => \@fields,
- charset => "utf-8",
- method => 'POST',
- required => [qw{editcontent}],
- javascript => 0,
- params => $q,
- action => $config{cgiurl},
- header => 0,
- table => 0,
- template => scalar template_params("editpage.tmpl"),
- wikiname => $config{wikiname},
+ print $q->header(
+ -status => $httpstatus,
+ -charset => 'utf-8',
);
-
- 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');
- $page=titlepage(possibly_foolish_untaint($page));
- if (! defined $page || ! length $page ||
- file_pruned($page, $config{srcdir}) || $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} && $form->field("do") ne "create") {
- $file=$pagesources{$page};
- $type=pagetype($file);
- if (! defined $type || $type=~/^_/) {
- error(sprintf(gettext("%s is not an editable page"), $page));
- }
- if (! $form->submitted) {
- $form->field(name => "rcsinfo",
- value => rcs_prepedit($file), force => 1);
- }
- $form->field(name => "editcontent", validate => '/.*/');
- }
- else {
- $type=$form->param('type');
- if (defined $type && length $type && $hooks{htmlize}{$type}) {
- $type=possibly_foolish_untaint($type);
- }
- elsif (defined $from && exists $pagesources{$from}) {
- # favor the type of linking page
- $type=pagetype($pagesources{$from});
- }
- $type=$config{default_pageext} unless defined $type;
- $file=$page.".".$type;
- if (! $form->submitted) {
- $form->field(name => "rcsinfo", value => "", force => 1);
- }
- $form->field(name => "editcontent", validate => '/.+/');
- }
+ print $message;
- $form->field(name => "do", type => 'hidden');
- $form->field(name => "from", type => 'hidden');
- $form->field(name => "rcsinfo", type => 'hidden');
- $form->field(name => "subpage", type => 'hidden');
- $form->field(name => "page", value => pagetitle($page, 1), force => 1);
- $form->field(name => "type", value => $type, force => 1);
- $form->field(name => "comments", type => "text", size => 80);
- $form->field(name => "editcontent", type => "textarea", rows => 20,
- cols => 80);
- $form->tmpl_param("can_commit", $config{rcs});
- $form->tmpl_param("indexlink", indexlink());
- $form->tmpl_param("helponformattinglink",
- htmllink("", "", "ikiwiki/formatting",
- noimageinline => 1,
- linktext => "FormattingHelp"));
- $form->tmpl_param("baseurl", baseurl());
-
- if ($form->submitted eq "Cancel") {
- 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") {
- my $content=$form->field('editcontent');
- run_hooks(editcontent => sub {
- $content=shift->(
- content => $content,
- page => $page,
- cgi => $q,
- session => $session,
- );
- });
- $form->tmpl_param("page_preview",
- htmlize($page, $type,
- linkify($page, "",
- preprocess($page, $page,
- filter($page, $page, $content), 0, 1))));
- }
- elsif ($form->submitted eq "Save Page") {
- $form->tmpl_param("page_preview", "");
+ # Internet Explod^Hrer won't show custom 404 responses
+ # unless they're >= 512 bytes
+ print ' ' x 512;
+
+ exit;
+}
+
+sub check_banned ($$) {
+ my $q=shift;
+ my $session=shift;
+
+ my $banned=0;
+ my $name=$session->param("name");
+ if (defined $name &&
+ grep { $name eq $_ } @{$config{banned_users}}) {
+ $banned=1;
}
- $form->tmpl_param("page_conflict", "");
-
- 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') ||
- file_pruned($from, $config{srcdir}) ||
- $from=~/^\// ||
- $form->submitted eq "Preview") {
- @page_locs=$best_loc=$page;
- }
- else {
- my $dir=$from."/";
- $dir=~s![^/]+/+$!!;
-
- if ((defined $form->field('subpage') && length $form->field('subpage')) ||
- $page eq gettext('discussion')) {
- $best_loc="$from/$page";
- }
- else {
- $best_loc=$dir.$page;
- }
-
- push @page_locs, $dir.$page;
- push @page_locs, "$from/$page";
- while (length $dir) {
- $dir=~s![^/]+/+$!!;
- push @page_locs, $dir.$page;
- }
- }
- push @page_locs, "$config{userdir}/$page"
- if length $config{userdir};
-
- @page_locs = grep {
- ! exists $pagecase{lc $_}
- } @page_locs;
- if (! @page_locs) {
- # hmm, someone else made the page in the
- # meantime?
- redirect($q, "$config{url}/".htmlpage($page));
- return;
- }
- my @editable_locs = grep {
- check_canedit($_, $q, $session, 1)
- } @page_locs;
- if (! @editable_locs) {
- # let it throw an error this time
- map { check_canedit($_, $q, $session) } @page_locs;
- }
-
- my @page_types;
- if (exists $hooks{htmlize}) {
- @page_types=grep { !/^_/ }
- keys %{$hooks{htmlize}};
- }
-
- $form->tmpl_param("page_select", 1);
- $form->field(name => "page", type => 'select',
- options => [ map { pagetitle($_, 1) } @editable_locs ],
- value => pagetitle($best_loc, 1));
- $form->field(name => "type", type => 'select',
- options => \@page_types);
- $form->title(sprintf(gettext("creating %s"), pagetitle($page)));
-
- }
- elsif ($form->field("do") eq "edit") {
- check_canedit($page, $q, $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');
- $form->title(sprintf(gettext("editing %s"), pagetitle($page)));
+ foreach my $b (@{$config{banned_users}}) {
+ if (pagespec_match("", $b,
+ ip => $ENV{REMOTE_ADDR},
+ name => defined $name ? $name : "",
+ )) {
+ $banned=1;
+ last;
}
-
- showform($form, \@buttons, $session, $q);
- saveindex();
}
- else {
- # save page
- 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);
- 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);
- return;
- }
-
- my $content=$form->field('editcontent');
- run_hooks(editcontent => sub {
- $content=shift->(
- content => $content,
- page => $page,
- cgi => $q,
- session => $session,
- );
- });
- $content=~s/\r\n/\n/g;
- $content=~s/\r/\n/g;
- $content.="\n" if $content !~ /\n$/;
-
- $config{cgi}=0; # avoid cgi error message
- eval { writefile($file, $config{srcdir}, $content) };
- $config{cgi}=1;
- if ($@) {
- $form->field(name => "rcsinfo", value => rcs_prepedit($file),
- force => 1);
- $form->tmpl_param("failed_save", 1);
- $form->tmpl_param("error_message", $@);
- $form->field("editcontent", value => $content, force => 1);
- $form->tmpl_param("page_select", 0);
- $form->field(name => "page", type => 'hidden');
- $form->field(name => "type", type => 'hidden');
- $form->title(sprintf(gettext("editing %s"), $page));
- showform($form, \@buttons, $session, $q);
- return;
- }
-
- my $conflict;
- if ($config{rcs}) {
- my $message="";
- if (defined $form->field('comments') &&
- length $form->field('comments')) {
- $message=$form->field('comments');
- }
-
- if (! $exists) {
- rcs_add($file);
- }
- # Prevent deadlock with post-commit hook by
- # signaling to it that it should not try to
- # do anything (except send commit mails).
- disable_commit_hook();
- $conflict=rcs_commit($file, $message,
- $form->field("rcsinfo"),
- $session->param("name"), $ENV{REMOTE_ADDR});
- enable_commit_hook();
- rcs_update();
- }
-
- # Refresh even if there was a conflict, since other changes
- # may have been committed while the post-commit hook was
- # disabled.
- require IkiWiki::Render;
- # Reload index, since the first time it's loaded is before
- # the wiki is locked, and things may have changed in the
- # meantime.
- loadindex();
- 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);
- return;
- }
- else {
- # 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");
- }
+ if ($banned) {
+ $session->delete();
+ cgi_savesession($session);
+ cgi_custom_failure(
+ $q, "403 Forbidden",
+ gettext("You are banned."));
}
-} #}}}
+}
-sub cgi_getsession ($) { #{{{
+sub cgi_getsession ($) {
my $q=shift;
- eval q{use CGI::Session};
- CGI::Session->name("ikiwiki_session_".encode_utf8($config{wikiname}));
+ eval q{use CGI::Session; use HTML::Entities};
+ error($@) if $@;
+ CGI::Session->name("ikiwiki_session_".encode_entities($config{wikiname}));
my $oldmask=umask(077);
- my $session = CGI::Session->new("driver:DB_File", $q,
- { FileName => "$config{wikistatedir}/sessions.db" });
+ my $session = eval {
+ CGI::Session->new("driver:DB_File", $q,
+ { FileName => "$config{wikistatedir}/sessions.db" })
+ };
+ if (! $session || $@) {
+ error($@." ".CGI::Session->errstr());
+ }
+
umask($oldmask);
return $session;
-} #}}}
+}
+
+# To guard against CSRF, the user's session id (sid)
+# can be stored on a form. This function will check
+# (for logged in users) that the sid on the form matches
+# the session id in the cookie.
+sub checksessionexpiry ($$) {
+ my $q=shift;
+ my $session = shift;
+
+ if (defined $session->param("name")) {
+ my $sid=$q->param('sid');
+ if (! defined $sid || $sid ne $session->id) {
+ error(gettext("Your login session has expired."));
+ }
+ }
+}
-sub cgi_savesession ($) { #{{{
+sub cgi_savesession ($) {
my $session=shift;
# Force session flush with safe umask.
my $oldmask=umask(077);
$session->flush;
umask($oldmask);
-} #}}}
+}
-sub cgi (;$$) { #{{{
+sub cgi (;$$) {
my $q=shift;
my $session=shift;
+ eval q{use CGI};
+ error($@) if $@;
+ $CGI::DISABLE_UPLOADS=$config{cgi_disable_uploads};
+
if (! $q) {
- eval q{use CGI};
- error($@) if $@;
-
+ binmode(STDIN);
$q=CGI->new;
+ binmode(STDIN, ":utf8");
run_hooks(cgi => sub { shift->($q) });
}
error("\"do\" parameter missing");
}
}
-
- # Things that do not need a session.
- if ($do eq 'recentchanges') {
- cgi_recentchanges($q);
- return;
- }
# Need to lock the wiki before getting a session.
lockwiki();
+ loadindex();
if (! $session) {
$session=cgi_getsession($q);
}
}
- 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);
- }
-
+ check_banned($q, $session);
+
run_hooks(sessioncgi => sub { shift->($q, $session) });
if ($do eq 'signin') {
elsif ($do eq 'prefs') {
cgi_prefs($q, $session);
}
- elsif ($do eq 'create' || $do eq 'edit') {
- cgi_editpage($q, $session);
- }
elsif (defined $session->param("postsignin") || $do eq 'postsignin') {
cgi_postsignin($q, $session);
}
else {
error("unknown do parameter");
}
-} #}}}
+}
+
+# Does not need to be called directly; all errors will go through here.
+sub cgierror ($) {
+ my $message=shift;
+
+ print "Content-type: text/html\n\n";
+ print misctemplate(gettext("Error"),
+ "<p class=\"error\">".gettext("Error").": $message</p>");
+ die $@;
+}
1