aboutsummaryrefslogtreecommitdiffstats
path: root/mod/photo.php
blob: e8e74cfde192c08f56770a90478dbddb24959431 (plain) (blame)
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
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
<?php

require_once('include/security.php');
require_once('include/Photo.php');

function photo_init(&$a) {

	// To-Do:
	// - checking with realpath
	// - checking permissions
	/*
	$cache = get_config('system','itemcache');
        if (($cache != '') and is_dir($cache)) {
		$cachefile = $cache."/".$a->argc."-".$a->argv[1]."-".$a->argv[2]."-".$a->argv[3];
		if (file_exists($cachefile)) {
			$data = file_get_contents($cachefile);

			if(function_exists('header_remove')) {
				header_remove('Pragma');
				header_remove('pragma');
			}

			header("Content-type: image/jpeg");
 			header("Expires: " . gmdate("D, d M Y H:i:s", time() + (3600*24)) . " GMT");
			header("Cache-Control: max-age=" . (3600*24));
			echo $data;
			killme();
			// NOTREACHED
		}
	}*/

	$prvcachecontrol = false;

	switch($a->argc) {
		case 4:
			$person = $a->argv[3];
			$customres = intval($a->argv[2]);
			$type = $a->argv[1];
			break;
		case 3:
			$person = $a->argv[2];
			$type = $a->argv[1];
			break;
		case 2:
			$photo = $a->argv[1];
			break;
		case 1:
		default:
			killme();
			// NOTREACHED
	}

	$default = 'images/person-175.jpg';

	if(isset($type)) {


		/**
		 * Profile photos
		 */

		switch($type) {

			case 'profile':
			case 'custom':
				$resolution = 4;
				break;
			case 'micro':
				$resolution = 6;
				$default = 'images/person-48.jpg';
				break;
			case 'avatar':
			default:
				$resolution = 5;
				$default = 'images/person-80.jpg';
				break;
		}

		$uid = str_replace('.jpg', '', $person);

		$r = q("SELECT * FROM `photo` WHERE `scale` = %d AND `uid` = %d AND `profile` = 1 LIMIT 1",
			intval($resolution),
			intval($uid)
		);
		if(count($r)) {
			$data = $r[0]['data'];
			$mimetype = $r[0]['type'];
		}
		if(! isset($data)) {
			$data = file_get_contents($default);
			$mimetype = 'image/jpeg';
		}
	}
	else {

		/**
		 * Other photos
		 */

		$resolution = 0;
		foreach( Photo::supportedTypes() as $m=>$e){
			$photo = str_replace(".$e",'',$photo);
		}
	
		if(substr($photo,-2,1) == '-') {
			$resolution = intval(substr($photo,-1,1));
			$photo = substr($photo,0,-2);
		}

		$r = q("SELECT `uid` FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d LIMIT 1",
			dbesc($photo),
			intval($resolution)
		);
		if(count($r)) {
			
			$sql_extra = permissions_sql($r[0]['uid']);

			// Now we'll see if we can access the photo

			$r = q("SELECT * FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d $sql_extra LIMIT 1",
				dbesc($photo),
				intval($resolution)
			);

			if(count($r)) {
				$data = $r[0]['data'];
				$mimetype = $r[0]['type'];
			}
			else {

				// Does the picture exist? It may be a remote person with no credentials,
				// but who should otherwise be able to view it. Show a default image to let 
				// them know permissions was denied. It may be possible to view the image 
				// through an authenticated profile visit.
				// There won't be many completely unauthorised people seeing this because
				// they won't have the photo link, so there's a reasonable chance that the person
				// might be able to obtain permission to view it.
 
				$r = q("SELECT * FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d LIMIT 1",
					dbesc($photo),
					intval($resolution)
				);
				if(count($r)) {
					$data = file_get_contents('images/nosign.jpg');
					$mimetype = 'image/jpeg';
					$prvcachecontrol = true;
				}
			}
		}
	}

	if(! isset($data)) {
		if(isset($resolution)) {
			switch($resolution) {

				case 4:
					$data = file_get_contents('images/person-175.jpg');
					$mimetype = 'image/jpeg';
					break;
				case 5:
					$data = file_get_contents('images/person-80.jpg');
					$mimetype = 'image/jpeg';
					break;
				case 6:
					$data = file_get_contents('images/person-48.jpg');
					$mimetype = 'image/jpeg';
					break;
				default:
					killme();
					// NOTREACHED
					break;
			}
		}
	}

	if(isset($customres) && $customres > 0 && $customres < 500) {
		$ph = new Photo($data, $mimetype);
		if($ph->is_valid()) {
			$ph->scaleImageSquare($customres);
			$data = $ph->imageString();
			$mimetype = $ph->getType();
		}
	}

	// Writing in cachefile
	if (isset($cachefile) && $cachefile != '')
		file_put_contents($cachefile, $data);

	if(function_exists('header_remove')) {
		header_remove('Pragma');
		header_remove('pragma');
	}

	header("Content-type: ".$mimetype);

	if($prvcachecontrol) {

		// it is a private photo that they have no permission to view.
		// tell the browser not to cache it, in case they authenticate
		// and subsequently have permission to see it

		header("Cache-Control: no-store, no-cache, must-revalidate");

	}
	else {

	 	header("Expires: " . gmdate("D, d M Y H:i:s", time() + (3600*24)) . " GMT");
		header("Cache-Control: max-age=" . (3600*24));

	}
	echo $data;
	killme();
	// NOTREACHED
}