summaryrefslogtreecommitdiff
path: root/lib/action.php
blob: 60c2418aeb1b77663bced6a27ad0478ee6832fed (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
<?php
/*
 * Laconica - a distributed open-source microblogging tool
 * Copyright (C) 2008, Controlez-Vous, Inc.
 *
 * 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/>.
 */

if (!defined('LACONICA')) { exit(1); }

class Action { // lawsuit

	var $args;

	function Action() {
	}

	# For initializing members of the class
	
	function init($argarray) {
		$this->args =& common_copy_args($argarray);
		return true;
	}

	# For comparison with If-Last-Modified
	# If not applicable, return NULL
	
	function last_modified() {
		return NULL;
	}
	
	function is_readonly() {
		return false;
	}

	function arg($key, $def=NULL) {
		if (array_key_exists($key, $this->args)) {
			return $this->args[$key];
		} else {
			return $def;
		}
	}

	function trimmed($key, $def=NULL) {
		$arg = $this->arg($key, $def);
		return (is_string($arg)) ? trim($arg) : $arg;
	}

	# Note: argarray ignored, since it's now passed in in init()
	
	function handle($argarray=NULL) {
		
		$lm = $this->last_modified();
		
		if ($lm) {
			header('Last-Modified: ' . date(DATE_RFC822, $lm));
			$if_modified_since = $_SERVER['HTTP_IF_MODIFIED_SINCE'];
			if ($if_modified_since) {
				$ims = strtotime($if_modified_since);
				if ($lm <= $ims) {
					$if_none_match = $_SERVER['HTTP_IF_NONE_MATCH'];
					if ($if_none_match) {
						header('304 Not Modified');
						# Better way to do this?
						exit(0);
					}
				}
			}
		}
	}

	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;
		}
	}	

	function server_error($msg, $code=500) {
		$action = $this->trimmed('action');
		common_debug("Server error '$code' on '$action': $msg", __FILE__);
		common_server_error($msg, $code);
	}

	function client_error($msg, $code=400) {
		$action = $this->trimmed('action');
		common_debug("User error '$code' on '$action': $msg", __FILE__);
		common_user_error($msg, $code);
	}

	function self_url() {
		$action = $this->trimmed('action');
		$args = $this->args;
		unset($args['action']);
		foreach (array_keys($_COOKIE) as $cookie) {
			unset($args[$cookie]);
		}
		return common_local_url($action, $args);
	}

	function nav_menu($menu) {
        $action = $this->trimmed('action');
        common_element_start('ul', array('id' => 'nav_views'));
        foreach ($menu as $menuaction => $menudesc) {
            common_menu_item(common_local_url($menuaction, isset($menudesc[2]) ? $menudesc[2] : NULL),
							 $menudesc[0],
							 $menudesc[1],
							 $action == $menuaction);
        }
        common_element_end('ul');
	}
}