forked from GNUsocial/gnu-social
491 lines
13 KiB
PHP
491 lines
13 KiB
PHP
<?php
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/*
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* Laconica - a distributed open-source microblogging tool
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* Copyright (C) 2008, Controlez-Vous, Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/* XXX: break up into separate modules (HTTP, HTML, user, files) */
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# Show a server error
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function common_server_error($msg) {
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header('Status: 500 Server Error');
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header('Content-type: text/plain');
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print $msg;
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exit();
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}
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# Show a user error
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function common_user_error($msg, $code=200) {
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common_show_header('Error');
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common_element('div', array('class' => 'error'), $msg);
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common_show_footer();
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}
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$xw = null;
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# Start an HTML element
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function common_element_start($tag, $attrs=NULL) {
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global $xw;
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$xw->startElement($tag);
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if (is_array($attrs)) {
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foreach ($attrs as $name => $value) {
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$xw->writeAttribute($name, $value);
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}
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} else if (is_string($attrs)) {
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$xw->writeAttribute('class', $attrs);
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}
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}
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function common_element_end($tag) {
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global $xw;
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$xw->endElement();
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}
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function common_element($tag, $attrs=NULL, $content=NULL) {
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common_element_start($tag, $attrs);
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if ($content) {
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global $xw;
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$xw->text($content);
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}
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common_element_end($tag);
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}
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function common_start_xml($doc=NULL, $public=NULL, $system=NULL) {
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global $xw;
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$xw = new XMLWriter();
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$xw->openURI('php://output');
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$xw->setIndent(true);
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$xw->startDocument('1.0', 'UTF-8');
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if ($doc) {
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$xw->writeDTD($doc, $public, $system);
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}
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}
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function common_end_xml() {
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global $xw;
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$xw->endDocument();
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$xw->flush();
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}
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function common_show_header($pagetitle, $callable=NULL, $data=NULL) {
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global $config, $xw;
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header('Content-Type: application/xhtml+xml');
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common_start_xml('html',
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'-//W3C//DTD XHTML 1.0 Strict//EN',
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'http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd');
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# FIXME: correct language for interface
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common_element_start('html', array('xmlns' => 'http://www.w3.org/1999/xhtml',
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'xml:lang' => 'en',
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'lang' => 'en'));
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common_element_start('head');
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common_element('title', NULL,
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$pagetitle . " - " . $config['site']['name']);
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common_element('link', array('rel' => 'stylesheet',
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'type' => 'text/css',
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'href' => $config['site']['path'] . 'theme/default/style/html.css',
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'media' => 'screen, projection, tv'));
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common_element('link', array('rel' => 'stylesheet',
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'type' => 'text/css',
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'href' => $config['site']['path'] . 'theme/default/style/layout.css',
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'media' => 'screen, projection, tv'));
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common_element('link', array('rel' => 'stylesheet',
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'type' => 'text/css',
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'href' => $config['site']['path'] . 'theme/default/style/print.css',
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'media' => 'print'));
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if ($callable) {
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if ($data) {
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call_user_func($callable, $data);
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} else {
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call_user_func($callable);
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}
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}
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common_element_end('head');
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common_element_start('body');
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common_element_start('div', array('id' => 'wrapper'));
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common_element_start('div', array('id' => 'content'));
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common_element_start('div', array('id' => 'header'));
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common_element('h1', 'title', $pagetitle);
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common_element('h2', 'subtitle', $config['site']['name']);
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common_element_end('div');
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common_head_menu();
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common_element_start('div', array('id' => 'page'));
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}
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function common_show_footer() {
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global $xw, $config;
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common_element_start('div', 'footer');
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common_foot_menu();
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common_license_block();
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common_element_end('div');
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common_element_end('div');
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common_element_end('div');
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common_element_end('div');
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common_element_end('body');
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common_element_end('html');
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common_end_xml();
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}
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function common_text($txt) {
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global $xw;
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$xw->text($txt);
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}
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function common_license_block() {
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global $config, $xw;
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common_element_start('div', 'license');
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common_element_start('a', array('class' => 'license',
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'rel' => 'license',
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href => $config['license']['url']));
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common_element('img', array('class' => 'license',
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'src' => $config['license']['image'],
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'alt' => $config['license']['title']));
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common_element_end('a');
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common_text(_t('Unless otherwise specified, contents of this site are copyright by the contributors and available under the '));
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common_element('a', array('class' => 'license',
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'rel' => 'license',
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href => $config['license']['url']),
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$config['license']['title']);
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common_text(_t('. Contributors should be attributed by full name or nickname.'));
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common_element_end('div');
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}
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function common_head_menu() {
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$user = common_current_user();
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common_element_start('ul', array('id' => 'menu', 'class' => ($user) ? 'five' : 'three'));
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common_menu_item(common_local_url('public'), _t('Public'));
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if ($user) {
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common_menu_item(common_local_url('all', array('nickname' =>
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$user->nickname)),
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_t('Home'));
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common_menu_item(common_local_url('showstream', array('nickname' =>
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$user->nickname)),
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_t('Profile'), $user->fullname || $user->nickname);
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common_menu_item(common_local_url('profilesettings'),
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_t('Settings'));
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common_menu_item(common_local_url('logout'),
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_t('Logout'));
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} else {
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common_menu_item(common_local_url('login'),
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_t('Login'));
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common_menu_item(common_local_url('register'),
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_t('Register'));
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}
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common_element_end('ul');
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}
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function common_foot_menu() {
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common_element_start('ul', 'footmenu menuish');
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common_menu_item(common_local_url('doc', array('title' => 'about')),
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_t('About'));
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common_menu_item(common_local_url('doc', array('title' => 'help')),
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_t('Help'));
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common_menu_item(common_local_url('doc', array('title' => 'privacy')),
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_t('Privacy'));
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common_menu_item(common_local_url('doc', array('title' => 'source')),
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_t('Source'));
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common_element_end('ul');
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}
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function common_menu_item($url, $text, $title=NULL) {
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$attrs['href'] = $url;
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if ($title) {
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$attrs['title'] = $title;
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}
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common_element_start('li', 'menuitem');
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common_element('a', $attrs, $text);
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common_element_end('li');
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}
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function common_input($id, $label, $value=NULL) {
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common_element_start('p');
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common_element('label', array('for' => $id), $label);
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$attrs = array('name' => $id,
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'type' => 'text',
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'id' => $id);
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if ($value) {
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$attrs['value'] = htmlspecialchars($value);
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}
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common_element('input', $attrs);
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common_element_end('p');
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}
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function common_password($id, $label) {
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common_element_start('p');
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common_element('label', array('for' => $id), $label);
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$attrs = array('name' => $id,
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'type' => 'password',
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'id' => $id);
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common_element('input', $attrs);
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common_element_end('p');
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}
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function common_submit($id, $label) {
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global $xw;
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common_element_start('p');
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common_element_start('label', array('for' => $id));
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$xw->writeRaw(' ');
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common_element_end('label');
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common_element('input', array('type' => 'submit',
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'id' => $id,
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'name' => $id,
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'value' => $label,
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'class' => 'button'));
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common_element_end('p');
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}
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function common_textarea($id, $label, $content=NULL) {
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common_element_start('p');
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common_element('label', array('for' => $id), $label);
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common_element('textarea', array('rows' => 3,
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'cols' => 40,
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'name' => $id,
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'id' => $id,
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'class' => 'width50'),
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($content) ? $content : ' ');
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common_element_end('p');
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}
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# salted, hashed passwords are stored in the DB
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function common_munge_password($id, $password) {
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return md5($id . $password);
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}
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# check if a username exists and has matching password
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function common_check_user($nickname, $password) {
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$user = User::staticGet('nickname', $nickname);
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if (is_null($user)) {
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return false;
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} else {
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return (0 == strcmp(common_munge_password($password, $user->id),
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$user->password));
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}
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}
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# is the current user logged in?
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function common_logged_in() {
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return (!is_null(common_current_user()));
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}
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function common_have_session() {
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return (0 != strcmp(session_id(), ''));
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}
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function common_ensure_session() {
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if (!common_have_session()) {
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@session_start();
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}
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}
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function common_set_user($nickname) {
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if (is_null($nickname) && common_have_session()) {
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unset($_SESSION['userid']);
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return true;
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} else {
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$user = User::staticGet('nickname', $nickname);
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if ($user) {
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common_ensure_session();
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$_SESSION['userid'] = $user->id;
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return true;
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} else {
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return false;
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}
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}
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return false;
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}
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# who is the current user?
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function common_current_user() {
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static $user = NULL; # FIXME: global memcached
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if (is_null($user)) {
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common_ensure_session();
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$id = $_SESSION['userid'];
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if ($id) {
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$user = User::staticGet($id);
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}
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}
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return $user;
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}
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# get canonical version of nickname for comparison
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function common_canonical_nickname($nickname) {
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# XXX: UTF-8 canonicalization (like combining chars)
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return $nickname;
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}
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# get canonical version of email for comparison
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function common_canonical_email($email) {
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# XXX: canonicalize UTF-8
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# XXX: lcase the domain part
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return $email;
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}
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function common_render_content($text) {
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# XXX: @ messages
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# XXX: # tags
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# XXX: machine tags
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return htmlspecialchars($text);
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}
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// where should the avatar go for this user?
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function common_avatar_filename($user, $extension, $size=NULL, $extra=NULL) {
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global $config;
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if ($size) {
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return $user->id . '-' . $size . (($extra) ? $extra : '') . $extension;
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} else {
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return $user->id . '-original' . (($extra) ? $extra : '') . $extension;
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}
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}
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function common_avatar_path($filename) {
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global $config;
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return $config['avatar']['directory'] . '/' . $filename;
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}
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function common_avatar_url($filename) {
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global $config;
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return "http://".$config['site']['server'].$config['avatar']['path'].'/'.$filename;
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}
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function common_default_avatar($size) {
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static $sizenames = array(AVATAR_PROFILE_SIZE => 'profile',
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AVATAR_STREAM_SIZE => 'stream',
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AVATAR_MINI_SIZE => 'mini');
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global $config;
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return "http://".$config['site']['server'].$config['site']['path'].'/'.$config['avatar']['default'][$sizenames[$size]];
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}
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function common_local_url($action, $args=NULL) {
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global $config;
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/* XXX: pretty URLs */
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$extra = '';
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if ($args) {
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foreach ($args as $key => $value) {
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$extra .= "&${key}=${value}";
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}
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}
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$pathpart = ($config['site']['path']) ? $config['site']['path']."/" : '';
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return "http://".$config['site']['server'].'/'.$pathpart."index.php?action=${action}${extra}";
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}
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function common_date_string($dt) {
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// XXX: do some sexy date formatting
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// return date(DATE_RFC822, $dt);
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return $dt;
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}
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function common_date_w3dtf($dt) {
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$t = strtotime($dt);
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return date(DATE_W3C, $t);
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}
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function common_redirect($url, $code=307) {
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static $status = array(301 => "Moved Permanently",
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302 => "Found",
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303 => "See Other",
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307 => "Temporary Redirect");
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header("Status: ${code} $status[$code]");
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header("Location: $url");
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common_element('a', array('href' => $url), $url);
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}
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function common_broadcast_notice($notice) {
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// XXX: broadcast notices to remote subscribers
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// XXX: broadcast notices to SMS
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// XXX: broadcast notices to Jabber
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// XXX: broadcast notices to other IM
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// XXX: use a queue system like http://code.google.com/p/microapps/wiki/NQDQ
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return true;
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}
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function common_profile_url($nickname) {
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return common_local_url('showstream', array('nickname' => $nickname));
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}
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function common_notice_form() {
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common_element_start('form', array('id' => 'newnotice', 'method' => 'POST',
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'action' => common_local_url('newnotice')));
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common_textarea('noticecontent', _t('What\'s up?'));
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common_submit('submit', _t('Send'));
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common_element_end('form');
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}
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function common_mint_tag($extra) {
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global $config;
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return
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'tag:'.$config['tag']['authority'].','.
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$config['tag']['date'].':'.$config['tag']['prefix'].$extra;
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}
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# Should make up a reasonable root URL
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function common_root_url() {
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global $config;
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$pathpart = ($config['site']['path']) ? $config['site']['path']."/" : '';
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return "http://".$config['site']['server'].'/'.$pathpart;
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}
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# returns $bytes bytes of random data as a hexadecimal string
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# "good" here is a goal and not a guarantee
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function common_good_rand($bytes) {
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# XXX: use random.org...?
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if (file_exists('/dev/urandom')) {
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return common_urandom($bytes);
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} else { # FIXME: this is probably not good enough
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return common_mtrand($bytes);
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}
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}
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function common_urandom($bytes) {
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$h = fopen('/dev/urandom', 'rb');
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# should not block
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$src = fread($h, $bytes);
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fclose($h);
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$enc = '';
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for ($i = 0; $i < $bytes; $i++) {
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$enc .= sprintf("%02x", (ord($src[$i])));
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}
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return $enc;
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}
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function common_mtrand($bytes) {
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$enc = '';
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for ($i = 0; $i < $bytes; $i++) {
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$enc .= sprintf("%02x", mt_rand(0, 255));
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}
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return $enc;
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}
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function common_timestamp() {
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return date('YmdHisu');
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}
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// XXX: set up gettext
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function _t($str) {
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return $str;
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}
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