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gnu-social/lib/action.php
Evan Prodromou 655573c213 Single-user mode 
New configuration options to define a single-user mode. This hides
most of the "community" pages, like the public timeline and groups.
The main user's timeline becomes the main page, and most other URLs
are changed.

Switching back and forth between 1-user and multi-user mode is
probably hazardous.

Squashed commit of the following:

commit d814aa5c92d14a27a12baba7893f3f8bf63f1d08
Author: Evan Prodromou <evan@status.net>
Date:   Tue Jan 26 00:17:27 2010 -0500

    don't show inbox and outbox in single-user mode

commit 47f19b9523a7015d4c6e460b73ea32c839e00aa1
Author: Evan Prodromou <evan@status.net>
Date:   Tue Jan 26 00:15:22 2010 -0500

    show correct URL for logo in single-user mode

commit 552010cffc33eadbc512ec5a67619dbc2015239a
Author: Evan Prodromou <evan@status.net>
Date:   Tue Jan 26 00:15:06 2010 -0500

    make singleuser its own config section

commit 786ab260a3ca172e57b555c75ca10946d8f258a1
Author: Evan Prodromou <evan@status.net>
Date:   Tue Jan 26 00:05:19 2010 -0500

    make single-user mode work

commit 5b21d7309b3a8dd5a4e0f29aea76f7897f1818b1
Author: Evan Prodromou <evan@status.net>
Date:   Mon Jan 25 23:45:55 2010 -0500

    add single-user mode
2010-01-26 00:21:05 -05:00

1199 lines
37 KiB
PHP
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<?php
/**
* StatusNet, the distributed open-source microblogging tool
*
* Base class for all actions (~views)
*
* PHP version 5
*
* LICENCE: This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category Action
* @package StatusNet
* @author Evan Prodromou <evan@status.net>
* @author Sarven Capadisli <csarven@status.net>
* @copyright 2008 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
*/
if (!defined('STATUSNET') && !defined('LACONICA')) {
exit(1);
}
require_once INSTALLDIR.'/lib/noticeform.php';
require_once INSTALLDIR.'/lib/htmloutputter.php';
/**
* Base class for all actions
*
* This is the base class for all actions in the package. An action is
* more or less a "view" in an MVC framework.
*
* Actions are responsible for extracting and validating parameters; using
* model classes to read and write to the database; and doing ouput.
*
* @category Output
* @package StatusNet
* @author Evan Prodromou <evan@status.net>
* @author Sarven Capadisli <csarven@status.net>
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
*
* @see HTMLOutputter
*/
class Action extends HTMLOutputter // lawsuit
{
var $args;
/**
* Constructor
*
* Just wraps the HTMLOutputter constructor.
*
* @param string $output URI to output to, default = stdout
* @param boolean $indent Whether to indent output, default true
*
* @see XMLOutputter::__construct
* @see HTMLOutputter::__construct
*/
function __construct($output='php://output', $indent=null)
{
parent::__construct($output, $indent);
}
/**
* For initializing members of the class.
*
* @param array $argarray misc. arguments
*
* @return boolean true
*/
function prepare($argarray)
{
$this->args =& common_copy_args($argarray);
return true;
}
/**
* Show page, a template method.
*
* @return nothing
*/
function showPage()
{
if (Event::handle('StartShowHTML', array($this))) {
$this->startHTML();
Event::handle('EndShowHTML', array($this));
}
if (Event::handle('StartShowHead', array($this))) {
$this->showHead();
Event::handle('EndShowHead', array($this));
}
if (Event::handle('StartShowBody', array($this))) {
$this->showBody();
Event::handle('EndShowBody', array($this));
}
if (Event::handle('StartEndHTML', array($this))) {
$this->endHTML();
Event::handle('EndEndHTML', array($this));
}
}
/**
* Show head, a template method.
*
* @return nothing
*/
function showHead()
{
// XXX: attributes (profile?)
$this->elementStart('head');
if (Event::handle('StartShowHeadElements', array($this))) {
$this->showTitle();
$this->showShortcutIcon();
$this->showStylesheets();
$this->showOpenSearch();
$this->showFeeds();
$this->showDescription();
$this->extraHead();
Event::handle('EndShowHeadElements', array($this));
}
$this->elementEnd('head');
}
/**
* Show title, a template method.
*
* @return nothing
*/
function showTitle()
{
$this->element('title', null,
sprintf(_("%1\$s - %2\$s"),
$this->title(),
common_config('site', 'name')));
}
/**
* Returns the page title
*
* SHOULD overload
*
* @return string page title
*/
function title()
{
return _("Untitled page");
}
/**
* Show themed shortcut icon
*
* @return nothing
*/
function showShortcutIcon()
{
if (is_readable(INSTALLDIR . '/theme/' . common_config('site', 'theme') . '/favicon.ico')) {
$this->element('link', array('rel' => 'shortcut icon',
'href' => Theme::path('favicon.ico')));
} else {
$this->element('link', array('rel' => 'shortcut icon',
'href' => common_path('favicon.ico')));
}
if (common_config('site', 'mobile')) {
if (is_readable(INSTALLDIR . '/theme/' . common_config('site', 'theme') . '/apple-touch-icon.png')) {
$this->element('link', array('rel' => 'apple-touch-icon',
'href' => Theme::path('apple-touch-icon.png')));
} else {
$this->element('link', array('rel' => 'apple-touch-icon',
'href' => common_path('apple-touch-icon.png')));
}
}
}
/**
* Show stylesheets
*
* @return nothing
*/
function showStylesheets()
{
if (Event::handle('StartShowStyles', array($this))) {
// Use old name for StatusNet for compatibility on events
if (Event::handle('StartShowStatusNetStyles', array($this)) &&
Event::handle('StartShowLaconicaStyles', array($this))) {
$this->cssLink('css/display.css',null,'screen, projection, tv');
$this->cssLink('css/print.css','base','print');
Event::handle('EndShowStatusNetStyles', array($this));
Event::handle('EndShowLaconicaStyles', array($this));
}
if (Event::handle('StartShowUAStyles', array($this))) {
$this->comment('[if IE]><link rel="stylesheet" type="text/css" '.
'href="'.Theme::path('css/ie.css', 'base').'?version='.STATUSNET_VERSION.'" /><![endif]');
foreach (array(6,7) as $ver) {
if (file_exists(Theme::file('css/ie'.$ver.'.css', 'base'))) {
// Yes, IE people should be put in jail.
$this->comment('[if lte IE '.$ver.']><link rel="stylesheet" type="text/css" '.
'href="'.Theme::path('css/ie'.$ver.'.css', 'base').'?version='.STATUSNET_VERSION.'" /><![endif]');
}
}
$this->comment('[if IE]><link rel="stylesheet" type="text/css" '.
'href="'.Theme::path('css/ie.css', null).'?version='.STATUSNET_VERSION.'" /><![endif]');
Event::handle('EndShowUAStyles', array($this));
}
if (Event::handle('StartShowDesign', array($this))) {
$user = common_current_user();
if (empty($user) || $user->viewdesigns) {
$design = $this->getDesign();
if (!empty($design)) {
$design->showCSS($this);
}
}
Event::handle('EndShowDesign', array($this));
}
Event::handle('EndShowStyles', array($this));
}
}
/**
* Show javascript headers
*
* @return nothing
*/
function showScripts()
{
if (Event::handle('StartShowScripts', array($this))) {
if (Event::handle('StartShowJQueryScripts', array($this))) {
$this->script('js/jquery.min.js');
$this->script('js/jquery.form.js');
$this->script('js/jquery.cookie.js');
$this->script('js/json2.js');
$this->script('js/jquery.joverlay.min.js');
Event::handle('EndShowJQueryScripts', array($this));
}
if (Event::handle('StartShowStatusNetScripts', array($this)) &&
Event::handle('StartShowLaconicaScripts', array($this))) {
$this->script('js/xbImportNode.js');
$this->script('js/util.js');
$this->script('js/geometa.js');
// Frame-busting code to avoid clickjacking attacks.
$this->element('script', array('type' => 'text/javascript'),
'if (window.top !== window.self) { window.top.location.href = window.self.location.href; }');
Event::handle('EndShowStatusNetScripts', array($this));
Event::handle('EndShowLaconicaScripts', array($this));
}
Event::handle('EndShowScripts', array($this));
}
}
/**
* Show OpenSearch headers
*
* @return nothing
*/
function showOpenSearch()
{
$this->element('link', array('rel' => 'search',
'type' => 'application/opensearchdescription+xml',
'href' => common_local_url('opensearch', array('type' => 'people')),
'title' => common_config('site', 'name').' People Search'));
$this->element('link', array('rel' => 'search', 'type' => 'application/opensearchdescription+xml',
'href' => common_local_url('opensearch', array('type' => 'notice')),
'title' => common_config('site', 'name').' Notice Search'));
}
/**
* Show feed headers
*
* MAY overload
*
* @return nothing
*/
function showFeeds()
{
$feeds = $this->getFeeds();
if ($feeds) {
foreach ($feeds as $feed) {
$this->element('link', array('rel' => $feed->rel(),
'href' => $feed->url,
'type' => $feed->mimeType(),
'title' => $feed->title));
}
}
}
/**
* Show description.
*
* SHOULD overload
*
* @return nothing
*/
function showDescription()
{
// does nothing by default
}
/**
* Show extra stuff in <head>.
*
* MAY overload
*
* @return nothing
*/
function extraHead()
{
// does nothing by default
}
/**
* Show body.
*
* Calls template methods
*
* @return nothing
*/
function showBody()
{
$this->elementStart('body', (common_current_user()) ? array('id' => $this->trimmed('action'),
'class' => 'user_in')
: array('id' => $this->trimmed('action')));
$this->elementStart('div', array('id' => 'wrap'));
if (Event::handle('StartShowHeader', array($this))) {
$this->showHeader();
Event::handle('EndShowHeader', array($this));
}
$this->showCore();
if (Event::handle('StartShowFooter', array($this))) {
$this->showFooter();
Event::handle('EndShowFooter', array($this));
}
$this->elementEnd('div');
$this->showScripts();
$this->elementEnd('body');
}
/**
* Show header of the page.
*
* Calls template methods
*
* @return nothing
*/
function showHeader()
{
$this->elementStart('div', array('id' => 'header'));
$this->showLogo();
$this->showPrimaryNav();
if (Event::handle('StartShowSiteNotice', array($this))) {
$this->showSiteNotice();
Event::handle('EndShowSiteNotice', array($this));
}
if (common_logged_in()) {
$this->showNoticeForm();
} else {
$this->showAnonymousMessage();
}
$this->elementEnd('div');
}
/**
* Show configured logo.
*
* @return nothing
*/
function showLogo()
{
$this->elementStart('address', array('id' => 'site_contact',
'class' => 'vcard'));
if (Event::handle('StartAddressData', array($this))) {
if (common_config('singleuser', 'enabled')) {
$url = common_local_url('showstream',
array('nickname' => common_config('singleuser', 'nickname')));
} else {
$url = common_local_url('public');
}
$this->elementStart('a', array('class' => 'url home bookmark',
'href' => $url));
if (common_config('site', 'logo') || file_exists(Theme::file('logo.png'))) {
$this->element('img', array('class' => 'logo photo',
'src' => (common_config('site', 'logo')) ? common_config('site', 'logo') : Theme::path('logo.png'),
'alt' => common_config('site', 'name')));
}
$this->element('span', array('class' => 'fn org'), common_config('site', 'name'));
$this->elementEnd('a');
Event::handle('EndAddressData', array($this));
}
$this->elementEnd('address');
}
/**
* Show primary navigation.
*
* @return nothing
*/
function showPrimaryNav()
{
$user = common_current_user();
$connect = '';
if (common_config('xmpp', 'enabled')) {
$connect = 'imsettings';
} else if (common_config('sms', 'enabled')) {
$connect = 'smssettings';
} else if (common_config('twitter', 'enabled')) {
$connect = 'twittersettings';
}
$this->elementStart('dl', array('id' => 'site_nav_global_primary'));
$this->element('dt', null, _('Primary site navigation'));
$this->elementStart('dd');
$this->elementStart('ul', array('class' => 'nav'));
if (Event::handle('StartPrimaryNav', array($this))) {
if ($user) {
$this->menuItem(common_local_url('all', array('nickname' => $user->nickname)),
_('Home'), _('Personal profile and friends timeline'), false, 'nav_home');
$this->menuItem(common_local_url('profilesettings'),
_('Account'), _('Change your email, avatar, password, profile'), false, 'nav_account');
if ($connect) {
$this->menuItem(common_local_url($connect),
_('Connect'), _('Connect to services'), false, 'nav_connect');
}
if ($user->hasRight(Right::CONFIGURESITE)) {
$this->menuItem(common_local_url('siteadminpanel'),
_('Admin'), _('Change site configuration'), false, 'nav_admin');
}
if (common_config('invite', 'enabled')) {
$this->menuItem(common_local_url('invite'),
_('Invite'),
sprintf(_('Invite friends and colleagues to join you on %s'),
common_config('site', 'name')),
false, 'nav_invitecontact');
}
$this->menuItem(common_local_url('logout'),
_('Logout'), _('Logout from the site'), false, 'nav_logout');
}
else {
if (!common_config('site', 'closed')) {
$this->menuItem(common_local_url('register'),
_('Register'), _('Create an account'), false, 'nav_register');
}
$this->menuItem(common_local_url('login'),
_('Login'), _('Login to the site'), false, 'nav_login');
}
$this->menuItem(common_local_url('doc', array('title' => 'help')),
_('Help'), _('Help me!'), false, 'nav_help');
if ($user || !common_config('site', 'private')) {
$this->menuItem(common_local_url('peoplesearch'),
_('Search'), _('Search for people or text'), false, 'nav_search');
}
Event::handle('EndPrimaryNav', array($this));
}
$this->elementEnd('ul');
$this->elementEnd('dd');
$this->elementEnd('dl');
}
/**
* Show site notice.
*
* @return nothing
*/
function showSiteNotice()
{
// Revist. Should probably do an hAtom pattern here
$text = common_config('site', 'notice');
if ($text) {
$this->elementStart('dl', array('id' => 'site_notice',
'class' => 'system_notice'));
$this->element('dt', null, _('Site notice'));
$this->elementStart('dd', null);
$this->raw($text);
$this->elementEnd('dd');
$this->elementEnd('dl');
}
}
/**
* Show notice form.
*
* MAY overload if no notice form needed... or direct message box????
*
* @return nothing
*/
function showNoticeForm()
{
$notice_form = new NoticeForm($this);
$notice_form->show();
}
/**
* Show anonymous message.
*
* SHOULD overload
*
* @return nothing
*/
function showAnonymousMessage()
{
// needs to be defined by the class
}
/**
* Show core.
*
* Shows local navigation, content block and aside.
*
* @return nothing
*/
function showCore()
{
$this->elementStart('div', array('id' => 'core'));
if (Event::handle('StartShowLocalNavBlock', array($this))) {
$this->showLocalNavBlock();
Event::handle('EndShowLocalNavBlock', array($this));
}
if (Event::handle('StartShowContentBlock', array($this))) {
$this->showContentBlock();
Event::handle('EndShowContentBlock', array($this));
}
if (Event::handle('StartShowAside', array($this))) {
$this->showAside();
Event::handle('EndShowAside', array($this));
}
$this->elementEnd('div');
}
/**
* Show local navigation block.
*
* @return nothing
*/
function showLocalNavBlock()
{
$this->elementStart('dl', array('id' => 'site_nav_local_views'));
$this->element('dt', null, _('Local views'));
$this->elementStart('dd');
$this->showLocalNav();
$this->elementEnd('dd');
$this->elementEnd('dl');
}
/**
* Show local navigation.
*
* SHOULD overload
*
* @return nothing
*/
function showLocalNav()
{
// does nothing by default
}
/**
* Show content block.
*
* @return nothing
*/
function showContentBlock()
{
$this->elementStart('div', array('id' => 'content'));
$this->showPageTitle();
$this->showPageNoticeBlock();
$this->elementStart('div', array('id' => 'content_inner'));
// show the actual content (forms, lists, whatever)
$this->showContent();
$this->elementEnd('div');
$this->elementEnd('div');
}
/**
* Show page title.
*
* @return nothing
*/
function showPageTitle()
{
$this->element('h1', null, $this->title());
}
/**
* Show page notice block.
*
* Only show the block if a subclassed action has overrided
* Action::showPageNotice(), or an event handler is registered for
* the StartShowPageNotice event, in which case we assume the
* 'page_notice' definition list is desired. This is to prevent
* empty 'page_notice' definition lists from being output everywhere.
*
* @return nothing
*/
function showPageNoticeBlock()
{
$rmethod = new ReflectionMethod($this, 'showPageNotice');
$dclass = $rmethod->getDeclaringClass()->getName();
if ($dclass != 'Action' || Event::hasHandler('StartShowPageNotice')) {
$this->elementStart('dl', array('id' => 'page_notice',
'class' => 'system_notice'));
$this->element('dt', null, _('Page notice'));
$this->elementStart('dd');
if (Event::handle('StartShowPageNotice', array($this))) {
$this->showPageNotice();
Event::handle('EndShowPageNotice', array($this));
}
$this->elementEnd('dd');
$this->elementEnd('dl');
}
}
/**
* Show page notice.
*
* SHOULD overload (unless there's not a notice)
*
* @return nothing
*/
function showPageNotice()
{
}
/**
* Show content.
*
* MUST overload (unless there's not a notice)
*
* @return nothing
*/
function showContent()
{
}
/**
* Show Aside.
*
* @return nothing
*/
function showAside()
{
$this->elementStart('div', array('id' => 'aside_primary',
'class' => 'aside'));
if (Event::handle('StartShowExportData', array($this))) {
$this->showExportData();
Event::handle('EndShowExportData', array($this));
}
if (Event::handle('StartShowSections', array($this))) {
$this->showSections();
Event::handle('EndShowSections', array($this));
}
$this->elementEnd('div');
}
/**
* Show export data feeds.
*
* @return void
*/
function showExportData()
{
$feeds = $this->getFeeds();
if ($feeds) {
$fl = new FeedList($this);
$fl->show($feeds);
}
}
/**
* Show sections.
*
* SHOULD overload
*
* @return nothing
*/
function showSections()
{
// for each section, show it
}
/**
* Show footer.
*
* @return nothing
*/
function showFooter()
{
$this->elementStart('div', array('id' => 'footer'));
$this->showSecondaryNav();
$this->showLicenses();
$this->elementEnd('div');
}
/**
* Show secondary navigation.
*
* @return nothing
*/
function showSecondaryNav()
{
$this->elementStart('dl', array('id' => 'site_nav_global_secondary'));
$this->element('dt', null, _('Secondary site navigation'));
$this->elementStart('dd', null);
$this->elementStart('ul', array('class' => 'nav'));
if (Event::handle('StartSecondaryNav', array($this))) {
$this->menuItem(common_local_url('doc', array('title' => 'help')),
_('Help'));
$this->menuItem(common_local_url('doc', array('title' => 'about')),
_('About'));
$this->menuItem(common_local_url('doc', array('title' => 'faq')),
_('FAQ'));
$bb = common_config('site', 'broughtby');
if (!empty($bb)) {
$this->menuItem(common_local_url('doc', array('title' => 'tos')),
_('TOS'));
}
$this->menuItem(common_local_url('doc', array('title' => 'privacy')),
_('Privacy'));
$this->menuItem(common_local_url('doc', array('title' => 'source')),
_('Source'));
$this->menuItem(common_local_url('version'),
_('Version'));
$this->menuItem(common_local_url('doc', array('title' => 'contact')),
_('Contact'));
$this->menuItem(common_local_url('doc', array('title' => 'badge')),
_('Badge'));
Event::handle('EndSecondaryNav', array($this));
}
$this->elementEnd('ul');
$this->elementEnd('dd');
$this->elementEnd('dl');
}
/**
* Show licenses.
*
* @return nothing
*/
function showLicenses()
{
$this->elementStart('dl', array('id' => 'licenses'));
$this->showStatusNetLicense();
$this->showContentLicense();
$this->elementEnd('dl');
}
/**
* Show StatusNet license.
*
* @return nothing
*/
function showStatusNetLicense()
{
$this->element('dt', array('id' => 'site_statusnet_license'), _('StatusNet software license'));
$this->elementStart('dd', null);
if (common_config('site', 'broughtby')) {
$instr = _('**%%site.name%%** is a microblogging service brought to you by [%%site.broughtby%%](%%site.broughtbyurl%%). ');
} else {
$instr = _('**%%site.name%%** is a microblogging service. ');
}
$instr .= sprintf(_('It runs the [StatusNet](http://status.net/) microblogging software, version %s, available under the [GNU Affero General Public License](http://www.fsf.org/licensing/licenses/agpl-3.0.html).'), STATUSNET_VERSION);
$output = common_markup_to_html($instr);
$this->raw($output);
$this->elementEnd('dd');
// do it
}
/**
* Show content license.
*
* @return nothing
*/
function showContentLicense()
{
if (Event::handle('StartShowContentLicense', array($this))) {
$this->element('dt', array('id' => 'site_content_license'), _('Site content license'));
$this->elementStart('dd', array('id' => 'site_content_license_cc'));
switch (common_config('license', 'type')) {
case 'private':
$this->element('p', null, sprintf(_('Content and data of %1$s are private and confidential.'),
common_config('site', 'name')));
// fall through
case 'allrightsreserved':
if (common_config('license', 'owner')) {
$this->element('p', null, sprintf(_('Content and data copyright by %1$s. All rights reserved.'),
common_config('license', 'owner')));
} else {
$this->element('p', null, _('Content and data copyright by contributors. All rights reserved.'));
}
break;
case 'cc': // fall through
default:
$this->elementStart('p');
$this->element('img', array('id' => 'license_cc',
'src' => common_config('license', 'image'),
'alt' => common_config('license', 'title'),
'width' => '80',
'height' => '15'));
//TODO: This is dirty: i18n
$this->text(_('All '.common_config('site', 'name').' content and data are available under the '));
$this->element('a', array('class' => 'license',
'rel' => 'external license',
'href' => common_config('license', 'url')),
common_config('license', 'title'));
$this->text(_('license.'));
$this->elementEnd('p');
break;
}
$this->elementEnd('dd');
Event::handle('EndShowContentLicense', array($this));
}
}
/**
* Return last modified, if applicable.
*
* MAY override
*
* @return string last modified http header
*/
function lastModified()
{
// For comparison with If-Last-Modified
// If not applicable, return null
return null;
}
/**
* Return etag, if applicable.
*
* MAY override
*
* @return string etag http header
*/
function etag()
{
return null;
}
/**
* Return true if read only.
*
* MAY override
*
* @param array $args other arguments
*
* @return boolean is read only action?
*/
function isReadOnly($args)
{
return false;
}
/**
* Returns query argument or default value if not found
*
* @param string $key requested argument
* @param string $def default value to return if $key is not provided
*
* @return boolean is read only action?
*/
function arg($key, $def=null)
{
if (array_key_exists($key, $this->args)) {
return $this->args[$key];
} else {
return $def;
}
}
/**
* Returns trimmed query argument or default value if not found
*
* @param string $key requested argument
* @param string $def default value to return if $key is not provided
*
* @return boolean is read only action?
*/
function trimmed($key, $def=null)
{
$arg = $this->arg($key, $def);
return is_string($arg) ? trim($arg) : $arg;
}
/**
* Handler method
*
* @param array $argarray is ignored since it's now passed in in prepare()
*
* @return boolean is read only action?
*/
function handle($argarray=null)
{
header('Vary: Accept-Encoding,Cookie');
$lm = $this->lastModified();
$etag = $this->etag();
if ($etag) {
header('ETag: ' . $etag);
}
if ($lm) {
header('Last-Modified: ' . date(DATE_RFC1123, $lm));
if (array_key_exists('HTTP_IF_MODIFIED_SINCE', $_SERVER)) {
$if_modified_since = $_SERVER['HTTP_IF_MODIFIED_SINCE'];
$ims = strtotime($if_modified_since);
if ($lm <= $ims) {
$if_none_match = (array_key_exists('HTTP_IF_NONE_MATCH', $_SERVER)) ?
$_SERVER['HTTP_IF_NONE_MATCH'] : null;
if (!$if_none_match ||
!$etag ||
$this->_hasEtag($etag, $if_none_match)) {
header('HTTP/1.1 304 Not Modified');
// Better way to do this?
exit(0);
}
}
}
}
}
/**
* Has etag? (private)
*
* @param string $etag etag http header
* @param string $if_none_match ifNoneMatch http header
*
* @return boolean
*/
function _hasEtag($etag, $if_none_match)
{
$etags = explode(',', $if_none_match);
return in_array($etag, $etags) || in_array('*', $etags);
}
/**
* Boolean understands english (yes, no, true, false)
*
* @param string $key query key we're interested in
* @param string $def default value
*
* @return boolean interprets yes/no strings as boolean
*/
function boolean($key, $def=false)
{
$arg = strtolower($this->trimmed($key));
if (is_null($arg)) {
return $def;
} else if (in_array($arg, array('true', 'yes', '1'))) {
return true;
} else if (in_array($arg, array('false', 'no', '0'))) {
return false;
} else {
return $def;
}
}
/**
* Integer value of an argument
*
* @param string $key query key we're interested in
* @param string $defValue optional default value (default null)
* @param string $maxValue optional max value (default null)
* @param string $minValue optional min value (default null)
*
* @return integer integer value
*/
function int($key, $defValue=null, $maxValue=null, $minValue=null)
{
$arg = strtolower($this->trimmed($key));
if (is_null($arg) || !is_integer($arg)) {
return $defValue;
}
if (!is_null($maxValue)) {
$arg = min($arg, $maxValue);
}
if (!is_null($minValue)) {
$arg = max($arg, $minValue);
}
return $arg;
}
/**
* Server error
*
* @param string $msg error message to display
* @param integer $code http error code, 500 by default
*
* @return nothing
*/
function serverError($msg, $code=500)
{
$action = $this->trimmed('action');
common_debug("Server error '$code' on '$action': $msg", __FILE__);
throw new ServerException($msg, $code);
}
/**
* Client error
*
* @param string $msg error message to display
* @param integer $code http error code, 400 by default
*
* @return nothing
*/
function clientError($msg, $code=400)
{
$action = $this->trimmed('action');
common_debug("User error '$code' on '$action': $msg", __FILE__);
throw new ClientException($msg, $code);
}
/**
* Returns the current URL
*
* @return string current URL
*/
function selfUrl()
{
list($action, $args) = $this->returnToArgs();
return common_local_url($action, $args);
}
/**
* Returns arguments sufficient for re-constructing URL
*
* @return array two elements: action, other args
*/
function returnToArgs()
{
$action = $this->trimmed('action');
$args = $this->args;
unset($args['action']);
if (common_config('site', 'fancy')) {
unset($args['p']);
}
if (array_key_exists('submit', $args)) {
unset($args['submit']);
}
foreach (array_keys($_COOKIE) as $cookie) {
unset($args[$cookie]);
}
return array($action, $args);
}
/**
* Generate a menu item
*
* @param string $url menu URL
* @param string $text menu name
* @param string $title title attribute, null by default
* @param boolean $is_selected current menu item, false by default
* @param string $id element id, null by default
*
* @return nothing
*/
function menuItem($url, $text, $title=null, $is_selected=false, $id=null)
{
// Added @id to li for some control.
// XXX: We might want to move this to htmloutputter.php
$lattrs = array();
if ($is_selected) {
$lattrs['class'] = 'current';
}
(is_null($id)) ? $lattrs : $lattrs['id'] = $id;
$this->elementStart('li', $lattrs);
$attrs['href'] = $url;
if ($title) {
$attrs['title'] = $title;
}
$this->element('a', $attrs, $text);
$this->elementEnd('li');
}
/**
* Generate pagination links
*
* @param boolean $have_before is there something before?
* @param boolean $have_after is there something after?
* @param integer $page current page
* @param string $action current action
* @param array $args rest of query arguments
*
* @return nothing
*/
function pagination($have_before, $have_after, $page, $action, $args=null)
{
// Does a little before-after block for next/prev page
if ($have_before || $have_after) {
$this->elementStart('dl', 'pagination');
$this->element('dt', null, _('Pagination'));
$this->elementStart('dd', null);
$this->elementStart('ul', array('class' => 'nav'));
}
if ($have_before) {
$pargs = array('page' => $page-1);
$this->elementStart('li', array('class' => 'nav_prev'));
$this->element('a', array('href' => common_local_url($action, $args, $pargs),
'rel' => 'prev'),
_('After'));
$this->elementEnd('li');
}
if ($have_after) {
$pargs = array('page' => $page+1);
$this->elementStart('li', array('class' => 'nav_next'));
$this->element('a', array('href' => common_local_url($action, $args, $pargs),
'rel' => 'next'),
_('Before'));
$this->elementEnd('li');
}
if ($have_before || $have_after) {
$this->elementEnd('ul');
$this->elementEnd('dd');
$this->elementEnd('dl');
}
}
/**
* An array of feeds for this action.
*
* Returns an array of potential feeds for this action.
*
* @return array Feed object to show in head and links
*/
function getFeeds()
{
return null;
}
/**
* A design for this action
*
* @return Design a design object to use
*/
function getDesign()
{
return Design::siteDesign();
}
/**
* Check the session token.
*
* Checks that the current form has the correct session token,
* and throw an exception if it does not.
*
* @return void
*/
function checkSessionToken()
{
// CSRF protection
$token = $this->trimmed('token');
if (empty($token) || $token != common_session_token()) {
$this->clientError(_('There was a problem with your session token.'));
}
}
}
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