3 * Laconica - a distributed open-source microblogging tool
4 * Copyright (C) 2008, Controlez-Vous, Inc.
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU Affero General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU Affero General Public License for more details.
16 * You should have received a copy of the GNU Affero General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
20 if (!defined('LACONICA')) { exit(1); }
22 class Action { // lawsuit
29 # For initializing members of the class
31 function init($argarray) {
32 $this->args =& common_copy_args($argarray);
36 # For comparison with If-Last-Modified
37 # If not applicable, return NULL
39 function last_modified() {
47 function is_readonly() {
51 function arg($key, $def=NULL) {
52 if (array_key_exists($key, $this->args)) {
53 return $this->args[$key];
59 function trimmed($key, $def=NULL) {
60 $arg = $this->arg($key, $def);
61 return (is_string($arg)) ? trim($arg) : $arg;
64 # Note: argarray ignored, since it's now passed in in init()
66 function handle($argarray=NULL) {
68 $lm = $this->last_modified();
69 $etag = $this->etag();
72 header('ETag: ' . $etag);
76 header('Last-Modified: ' . date(DATE_RFC822, $lm));
77 $if_modified_since = $_SERVER['HTTP_IF_MODIFIED_SINCE'];
78 if ($if_modified_since) {
79 $ims = strtotime($if_modified_since);
81 if (!$etag || $this->_has_etag($etag, $_SERVER['HTTP_IF_NONE_MATCH'])) {
82 header('HTTP/1.1 304 Not Modified');
83 # Better way to do this?
91 function _has_etag($etag, $if_none_match) {
92 return ($if_none_match) && in_array($etag, explode(',', $if_none_match));
95 function boolean($key, $def=false) {
96 $arg = strtolower($this->trimmed($key));
100 } else if (in_array($arg, array('true', 'yes', '1'))) {
102 } else if (in_array($arg, array('false', 'no', '0'))) {
109 function server_error($msg, $code=500) {
110 $action = $this->trimmed('action');
111 common_debug("Server error '$code' on '$action': $msg", __FILE__);
112 common_server_error($msg, $code);
115 function client_error($msg, $code=400) {
116 $action = $this->trimmed('action');
117 common_debug("User error '$code' on '$action': $msg", __FILE__);
118 common_user_error($msg, $code);
121 function self_url() {
122 $action = $this->trimmed('action');
124 unset($args['action']);
125 foreach (array_keys($_COOKIE) as $cookie) {
126 unset($args[$cookie]);
128 return common_local_url($action, $args);
131 function nav_menu($menu) {
132 $action = $this->trimmed('action');
133 common_element_start('ul', array('id' => 'nav_views'));
134 foreach ($menu as $menuaction => $menudesc) {
135 common_menu_item(common_local_url($menuaction, isset($menudesc[2]) ? $menudesc[2] : NULL),
138 $action == $menuaction);
140 common_element_end('ul');