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1 <?php
2
3 function photo_init(&$a) {
4
5         switch($a->argc) {
6                 case 3:
7                         $person = $a->argv[2];
8                         $type = $a->argv[1];
9                         break;
10                 case 2:
11                         $photo = $a->argv[1];
12                         break;
13                 case 1:
14                 default:
15                         killme();
16                         // NOTREACHED
17         }
18
19         $default = 'images/default-profile.jpg';
20
21         if(isset($type)) {
22                 switch($type) {
23
24                         case 'profile':
25                                 $resolution = 4;
26                                 break;
27                         case 'micro':
28                                 $resolution = 6;
29                                 $default = 'images/default-profile-mm.jpg';
30                                 break;
31                         case 'avatar':
32                         default:
33                                 $resolution = 5;
34                                 $default = 'images/default-profile-sm.jpg';
35                                 break;
36                 }
37
38                 $uid = str_replace('.jpg', '', $person);
39
40                 $r = q("SELECT * FROM `photo` WHERE `scale` = %d AND `uid` = %d AND `profile` = 1 LIMIT 1",
41                         intval($resolution),
42                         intval($uid)
43                 );
44                 if(count($r)) {
45                         $data = $r[0]['data'];
46                 }
47                 if(! isset($data)) {
48                         $data = file_get_contents($default);
49                 }
50         }
51         else {
52
53                 $resolution = 0;
54                 $photo = str_replace('.jpg','',$photo);
55         
56                 if(substr($photo,-2,1) == '-') {
57                         $resolution = intval(substr($photo,-1,1));
58                         $photo = substr($photo,0,-2);
59                 }
60
61                 $r = q("SELECT `uid` FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d LIMIT 1",
62                         dbesc($photo),
63                         intval($resolution)
64                 );
65                 if(count($r)) {
66                         
67                         $owner = $r[0]['uid'];
68
69                         $sql_extra = " AND `allow_cid` = '' AND `allow_gid` = '' AND `deny_cid` = '' AND `deny_gid` = '' ";
70
71                         if(local_user() && ($owner == $_SESSION['uid'])) {
72
73                                 // Owner can always see his/her photos
74                                 $sql_extra = ''; 
75
76                         }
77                         elseif(remote_user()) {
78
79                                 // authenticated visitor - here lie dragons
80
81                                 $groups = init_groups_visitor($_SESSION['visitor_id']);
82                                 $gs = '<<>>'; // should be impossible to match
83                                 if(count($groups)) {
84                                         foreach($groups as $g)
85                                                 $gs .= '|<' . intval($g) . '>';
86                                 } 
87
88                                 $sql_extra = sprintf(
89                                         " AND ( `allow_cid` = '' OR `allow_cid` REGEXP '<%d>' ) 
90                                           AND ( `deny_cid`  = '' OR  NOT `deny_cid` REGEXP '<%d>' ) 
91                                           AND ( `allow_gid` = '' OR `allow_gid` REGEXP '%s' )
92                                           AND ( `deny_gid`  = '' OR NOT `deny_gid` REGEXP '%s') ",
93
94                                         intval($_SESSION['visitor_id']),
95                                         intval($_SESSION['visitor_id']),
96                                         dbesc($gs),
97                                         dbesc($gs)
98                                 );
99                         }
100
101                         // Now we'll see if we can access the photo
102
103                         $r = q("SELECT * FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d $sql_extra LIMIT 1",
104                                 dbesc($photo),
105                                 intval($resolution)
106                         );
107
108                         if(count($r)) {
109                                 $data = $r[0]['data'];
110                         }
111                 }
112         }
113
114         if(! isset($data)) {
115                 killme();
116                 // NOTREACHED
117         }
118
119         header("Content-type: image/jpeg");
120         echo $data;
121         killme();
122         // NOTREACHED
123 }