730 lines
20 KiB
PHP
730 lines
20 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, $code=500) {
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static $status = array(500 => 'Internal Server Error',
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501 => 'Not Implemented',
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502 => 'Bad Gateway',
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503 => 'Service Unavailable',
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504 => 'Gateway Timeout',
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505 => 'HTTP Version Not Supported');
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if (!array_key_exists($code, $status)) {
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$code = 500;
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}
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$status_string = $status[$code];
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header('HTTP/1.1 '.$code.' '.$status_string);
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header('Content-type: text/plain');
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print $msg;
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print "\n";
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exit();
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}
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# Show a user error
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function common_user_error($msg, $code=400) {
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static $status = array(400 => 'Bad Request',
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401 => 'Unauthorized',
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402 => 'Payment Required',
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403 => 'Forbidden',
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404 => 'Not Found',
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405 => 'Method Not Allowed',
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406 => 'Not Acceptable',
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407 => 'Proxy Authentication Required',
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408 => 'Request Timeout',
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409 => 'Conflict',
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410 => 'Gone',
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411 => 'Length Required',
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412 => 'Precondition Failed',
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413 => 'Request Entity Too Large',
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414 => 'Request-URI Too Long',
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415 => 'Unsupported Media Type',
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416 => 'Requested Range Not Satisfiable',
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417 => 'Expectation Failed');
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if (!array_key_exists($code, $status)) {
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$code = 400;
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}
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$status_string = $status[$code];
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header('HTTP/1.1 '.$code.' '.$status_string);
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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, $notice=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' => theme_path('display.css'),
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'media' => 'screen, projection, tv'));
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foreach (array(6,7) as $ver) {
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if (file_exists(theme_file('ie'.$ver.'.css'))) {
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# Yes, IE people should be put in jail.
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$xw->writeComment('[if lte IE '.$ver.']><link rel="stylesheet" type="text/css" '.
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'href="'.theme_path('ie'.$ver.'.css').' /><![endif]');
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}
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}
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if ($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' => 'wrap'));
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common_element_start('div', array('id' => 'header'));
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common_nav_menu();
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common_element_start('a', array('href' => common_local_url('public')));
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common_element('img', array('src' => ($config['site']['logo']) ?
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($config['site']['logo']) : theme_path('logo.png'),
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'alt' => $config['site']['name'],
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'id' => 'logo'));
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common_element_end('a');
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if (common_logged_in()) {
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common_notice_form();
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}
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common_element_end('div');
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common_element_start('div', array('id' => 'content'));
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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_end('div'); # content div
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common_foot_menu();
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common_element_start('div', array('id' => 'footer'));
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common_element('img', array('id' => 'cc',
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'src' => $config['license']['image'],
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'alt' => $config['license']['title']));
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common_element_start('p');
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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('p');
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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($txt);
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}
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function common_raw($xml) {
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global $xw;
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$xw->writeRaw($xml);
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}
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function common_nav_menu() {
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$user = common_current_user();
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common_element_start('ul', array('id' => 'nav'));
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if ($user) {
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common_menu_item(common_local_url('all', array('nickname' => $user->nickname)),
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_t('Home'));
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}
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common_menu_item(common_local_url('public'), _t('Public'));
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common_menu_item(common_local_url('doc', array('title' => 'help')),
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_t('Help'));
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if ($user) {
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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'), _t('Login'));
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common_menu_item(common_local_url('register'), _t('Register'));
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}
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common_element_end('ul');
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}
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function common_views_menu($selected=NULL) {
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$user = common_current_user();
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common_element_start('ul', array('id' => 'nav_views'));
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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'),
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($user->fullname) ? $user->fullname : $user->nickname);
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common_element_end('ul');
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}
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function common_foot_menu() {
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common_element_start('ul', array('id' => 'nav_sub'));
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common_menu_item(common_local_url('doc', array('title' => 'about')),
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_t('About'));
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common_menu_item(common_local_url('doc', array('title' => 'privacy')),
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_t('Privacy'));
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common_menu_item(common_local_url('doc', array('title' => 'source')),
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_t('Source'));
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common_element_end('ul');
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}
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function common_menu_item($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');
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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', $attrs);
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common_element_end('p');
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}
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function common_hidden($id, $value) {
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common_element('input', array('name' => $id,
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'type' => 'hidden',
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'id' => $id,
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'value' => $value));
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}
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function common_password($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('input', array('type' => 'submit',
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'id' => $id,
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'name' => $id,
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'value' => $label));
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common_element_end('p');
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}
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function common_textarea($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' => $id),
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($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 strtolower($nickname);
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}
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# get canonical version of email for comparison
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function common_canonical_email($email) {
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# XXX: canonicalize UTF-8
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# XXX: lcase the domain part
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return $email;
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}
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define('URL_REGEX', '^|[ \t\r\n])((ftp|http|https|gopher|mailto|news|nntp|telnet|wais|file|prospero|aim|webcal):(([A-Za-z0-9$_.+!*(),;/?:@&~=-])|%[A-Fa-f0-9]{2}){2,}(#([a-zA-Z0-9][a-zA-Z0-9$_.+!*(),;/?:@&~=%-]*))?([A-Za-z0-9$_+!*();/?:~-]))');
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function common_render_content($text, $notice) {
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$r = htmlspecialchars($text);
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$id = $notice->profile_id;
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$r = preg_replace('@https?://\S+@', '<a href="\0" class="extlink">\0</a>', $r);
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$r = preg_replace('/(^|\b)@([\w-]+)($|\b)/e', "'\\1@'.common_at_link($id, '\\2').'\\3'", $r);
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# XXX: # tags
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# XXX: machine tags
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return $r;
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}
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function common_at_link($sender_id, $nickname) {
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# Try to find profiles this profile is subscribed to that have this nickname
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$recipient = new Profile();
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# XXX: chokety and bad
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$recipient->whereAdd('EXISTS (SELECT subscribed from subscription where subscriber = '.$sender_id.' and subscribed = id)', 'AND');
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$recipient->whereAdd('nickname = "' . trim($nickname) . '"', 'AND');
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if ($recipient->find(TRUE)) {
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return '<a href="'.htmlspecialchars($recipient->profileurl).'" class="atlink tolistenee">'.$nickname.'</a>';
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}
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# Try to find profiles that listen to this profile and that have this nickname
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$recipient = new Profile();
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# XXX: chokety and bad
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$recipient->whereAdd('EXISTS (SELECT subscriber from subscription where subscribed = '.$sender_id.' and subscriber = id)', 'AND');
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$recipient->whereAdd('nickname = "' . trim($nickname) . '"', 'AND');
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if ($recipient->find(TRUE)) {
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return '<a href="'.htmlspecialchars($recipient->profileurl).'" class="atlink tolistener">'.$nickname.'</a>';
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}
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# If this is a local user, try to find a local user with that nickname.
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$sender = User::staticGet($sender_id);
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if ($sender) {
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$recipient_user = User::staticGet('nickname', $nickname);
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if ($recipient_user) {
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$recipient = $recipient->getProfile();
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return '<a href="'.htmlspecialchars($recipient->profileurl).'" class="atlink usertouser">'.$nickname.'</a>';
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}
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}
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# Otherwise, no links. @messages from local users to remote users,
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# or from remote users to other remote users, are just
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# outside our ability to make intelligent guesses about
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return $nickname;
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}
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// where should the avatar go for this user?
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function common_avatar_filename($id, $extension, $size=NULL, $extra=NULL) {
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global $config;
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if ($size) {
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return $id . '-' . $size . (($extra) ? ('-' . $extra) : '') . $extension;
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} else {
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return $id . '-original' . (($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 INSTALLDIR . '/avatar/' . $filename;
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}
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function common_avatar_url($filename) {
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return common_path('avatar/'.$filename);
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}
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function common_default_avatar($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 $config;
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return common_path($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 $config;
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if ($config['site']['fancy']) {
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return common_fancy_url($action, $args);
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} else {
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return common_simple_url($action, $args);
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}
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}
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function common_fancy_url($action, $args=NULL) {
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switch (strtolower($action)) {
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case 'public':
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return common_path('');
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case 'publicrss':
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return common_path('rss');
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case 'doc':
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return common_path('doc/'.$args['title']);
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case 'login':
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case 'logout':
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case 'register':
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case 'subscribe':
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case 'unsubscribe':
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return common_path('main/'.$action);
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case 'avatar':
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case 'password':
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return common_path('settings/'.$action);
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case 'profilesettings':
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return common_path('settings/profile');
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case 'newnotice':
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return common_path('notice/new');
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case 'shownotice':
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return common_path('notice/'.$args['notice']);
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case 'subscriptions':
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case 'subscribed':
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case 'xrds':
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case 'all':
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case 'foaf':
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return common_path($args['nickname'].'/'.$action);
|
|
case 'allrss':
|
|
return common_path($args['nickname'].'/all/rss');
|
|
case 'userrss':
|
|
return common_path($args['nickname'].'/rss');
|
|
case 'showstream':
|
|
return common_path($args['nickname']);
|
|
default:
|
|
return common_simple_url($action, $args);
|
|
}
|
|
}
|
|
|
|
function common_simple_url($action, $args=NULL) {
|
|
global $config;
|
|
/* XXX: pretty URLs */
|
|
$extra = '';
|
|
if ($args) {
|
|
foreach ($args as $key => $value) {
|
|
$extra .= "&${key}=${value}";
|
|
}
|
|
}
|
|
return common_path("index.php?action=${action}${extra}");
|
|
}
|
|
|
|
function common_path($relative) {
|
|
global $config;
|
|
$pathpart = ($config['site']['path']) ? $config['site']['path']."/" : '';
|
|
return "http://".$config['site']['server'].'/'.$pathpart.$relative;
|
|
}
|
|
|
|
function common_date_string($dt) {
|
|
// XXX: do some sexy date formatting
|
|
// return date(DATE_RFC822, $dt);
|
|
return $dt;
|
|
}
|
|
|
|
function common_date_w3dtf($dt) {
|
|
$t = strtotime($dt);
|
|
return date(DATE_W3C, $t);
|
|
}
|
|
|
|
function common_redirect($url, $code=307) {
|
|
static $status = array(301 => "Moved Permanently",
|
|
302 => "Found",
|
|
303 => "See Other",
|
|
307 => "Temporary Redirect");
|
|
header("Status: ${code} $status[$code]");
|
|
header("Location: $url");
|
|
common_element('a', array('href' => $url), $url);
|
|
}
|
|
|
|
function common_broadcast_notice($notice, $remote=false) {
|
|
// XXX: optionally use a queue system like http://code.google.com/p/microapps/wiki/NQDQ
|
|
if (!$remote) {
|
|
# Make sure we have the OMB stuff
|
|
require_once(INSTALLDIR.'/lib/omb.php');
|
|
omb_broadcast_remote_subscribers($notice);
|
|
}
|
|
// XXX: broadcast notices to Jabber
|
|
// XXX: broadcast notices to SMS
|
|
// XXX: broadcast notices to other IM
|
|
return true;
|
|
}
|
|
|
|
|
|
function common_profile_url($nickname) {
|
|
return common_local_url('showstream', array('nickname' => $nickname));
|
|
}
|
|
|
|
# Don't call if nobody's logged in
|
|
|
|
function common_notice_form() {
|
|
$user = common_current_user();
|
|
assert(!is_null($user));
|
|
common_element_start('form', array('id' => 'status_form',
|
|
'method' => 'POST',
|
|
'action' => common_local_url('newnotice')));
|
|
common_element_start('p');
|
|
common_element('label', array('for' => 'status_update',
|
|
'id' => 'status_label'),
|
|
_t('What\'s up, ').$user->nickname.'?');
|
|
common_element('textarea', array('id' => 'status_textarea',
|
|
'name' => 'status_textarea'));
|
|
common_element('input', array('id' => 'status_submit',
|
|
'name' => 'status_submit',
|
|
'type' => 'submit',
|
|
'value' => _t('Send')));
|
|
common_element_end('p');
|
|
common_element_end('form');
|
|
}
|
|
|
|
function common_mint_tag($extra) {
|
|
global $config;
|
|
return
|
|
'tag:'.$config['tag']['authority'].','.
|
|
$config['tag']['date'].':'.$config['tag']['prefix'].$extra;
|
|
}
|
|
|
|
# Should make up a reasonable root URL
|
|
|
|
function common_root_url() {
|
|
return common_path('');
|
|
}
|
|
|
|
# returns $bytes bytes of random data as a hexadecimal string
|
|
# "good" here is a goal and not a guarantee
|
|
|
|
function common_good_rand($bytes) {
|
|
# XXX: use random.org...?
|
|
if (file_exists('/dev/urandom')) {
|
|
return common_urandom($bytes);
|
|
} else { # FIXME: this is probably not good enough
|
|
return common_mtrand($bytes);
|
|
}
|
|
}
|
|
|
|
function common_urandom($bytes) {
|
|
$h = fopen('/dev/urandom', 'rb');
|
|
# should not block
|
|
$src = fread($h, $bytes);
|
|
fclose($h);
|
|
$enc = '';
|
|
for ($i = 0; $i < $bytes; $i++) {
|
|
$enc .= sprintf("%02x", (ord($src[$i])));
|
|
}
|
|
return $enc;
|
|
}
|
|
|
|
function common_mtrand($bytes) {
|
|
$enc = '';
|
|
for ($i = 0; $i < $bytes; $i++) {
|
|
$enc .= sprintf("%02x", mt_rand(0, 255));
|
|
}
|
|
return $enc;
|
|
}
|
|
|
|
function common_set_returnto($url) {
|
|
common_ensure_session();
|
|
$_SESSION['returnto'] = $url;
|
|
}
|
|
|
|
function common_get_returnto() {
|
|
common_ensure_session();
|
|
return $_SESSION['returnto'];
|
|
}
|
|
|
|
function common_timestamp() {
|
|
return date('YmdHis');
|
|
}
|
|
|
|
// XXX: set up gettext
|
|
|
|
function _t($str) {
|
|
return $str;
|
|
}
|
|
|
|
function common_ensure_syslog() {
|
|
static $initialized = false;
|
|
if (!$initialized) {
|
|
global $config;
|
|
define_syslog_variables();
|
|
openlog($config['syslog']['appname'], 0, LOG_USER);
|
|
$initialized = true;
|
|
}
|
|
}
|
|
|
|
function common_log($priority, $msg, $filename=NULL) {
|
|
common_ensure_syslog();
|
|
syslog($priority, $msg);
|
|
}
|
|
|
|
function common_debug($msg, $filename=NULL) {
|
|
if ($filename) {
|
|
common_log(LOG_DEBUG, basename($filename).' - '.$msg);
|
|
} else {
|
|
common_log(LOG_DEBUG, $msg);
|
|
}
|
|
}
|
|
|
|
function common_valid_http_url($url) {
|
|
return Validate::uri($url, array('allowed_schemes' => array('http', 'https')));
|
|
}
|
|
|
|
function common_valid_tag($tag) {
|
|
if (preg_match('/^tag:(.*?),(\d{4}(-\d{2}(-\d{2})?)?):(.*)$/', $tag, $matches)) {
|
|
return (Validate::email($matches[1]) ||
|
|
preg_match('/^([\w-\.]+)$/', $matches[1]));
|
|
}
|
|
return false;
|
|
}
|
|
|
|
# Does a little before-after block for next/prev page
|
|
|
|
function common_pagination($have_before, $have_after, $page, $action, $args=NULL) {
|
|
|
|
if ($have_before || $have_after) {
|
|
common_element_start('div', array('id' => 'pagination'));
|
|
common_element_start('ul', array('id' => 'nav_pagination'));
|
|
}
|
|
|
|
if ($have_before) {
|
|
$pargs = array('page' => $page-1);
|
|
$newargs = ($args) ? array_merge($args,$pargs) : $pargs;
|
|
|
|
common_element_start('li', 'before');
|
|
common_element('a', array('href' => common_local_url($action, $newargs)),
|
|
_t('« Before'));
|
|
common_element_end('li');
|
|
}
|
|
|
|
if ($have_after) {
|
|
$pargs = array('page' => $page+1);
|
|
$newargs = ($args) ? array_merge($args,$pargs) : $pargs;
|
|
common_element_start('li', 'after');
|
|
common_element('a', array('href' => common_local_url($action, $newargs)),
|
|
_t('After »'));
|
|
common_element_end('li');
|
|
}
|
|
|
|
if ($have_before || $have_after) {
|
|
common_element_end('ul');
|
|
common_element_end('div');
|
|
}
|
|
}
|