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
|
<?php
function hub_return($valid,$body) {
if($valid) {
header($_SERVER["SERVER_PROTOCOL"] . ' 200 ' . 'OK');
echo $body;
killme();
}
else {
header($_SERVER["SERVER_PROTOCOL"] . ' 404 ' . 'Not Found');
killme();
}
// NOTREACHED
}
// when receiving an XML feed, always return OK
function hub_post_return() {
header($_SERVER["SERVER_PROTOCOL"] . ' 200 ' . 'OK');
killme();
}
function pubsub_init(&$a) {
$nick = (($a->argc > 1) ? notags(trim($a->argv[1])) : '');
$contact_id = (($a->argc > 2) ? intval($a->argv[2]) : 0 );
if($_SERVER['REQUEST_METHOD'] === 'GET') {
$hub_mode = ((x($_GET,'hub_mode')) ? notags(trim($_GET['hub_mode'])) : '');
$hub_topic = ((x($_GET,'hub_topic')) ? notags(trim($_GET['hub_topic'])) : '');
$hub_challenge = ((x($_GET,'hub_challenge')) ? notags(trim($_GET['hub_challenge'])) : '');
$hub_lease = ((x($_GET,'hub_lease_seconds')) ? notags(trim($_GET['hub_lease_seconds'])) : '');
$hub_verify = ((x($_GET,'hub_verify_token')) ? notags(trim($_GET['hub_verify_token'])) : '');
logger('pubsub: Subscription from ' . $_SERVER['REMOTE_ADDR']);
logger('pubsub: data: ' . print_r($_GET,true), LOGGER_DATA);
$subscribe = (($hub_mode === 'subscribe') ? 1 : 0);
$r = q("SELECT * FROM `user` WHERE `nickname` = '%s' AND `account_expired` = 0 LIMIT 1",
dbesc($nick)
);
if(! count($r)) {
logger('pubsub: local account not found: ' . $nick);
hub_return(false, '');
}
$owner = $r[0];
$sql_extra = ((strlen($hub_verify)) ? sprintf(" AND `hub-verify` = '%s' ", dbesc($hub_verify)) : '');
$r = q("SELECT * FROM `contact` WHERE `id` = %d AND `uid` = %d
AND `blocked` = 0 AND `pending` = 0 $sql_extra LIMIT 1",
intval($contact_id),
intval($owner['uid'])
);
if(! count($r)) {
logger('pubsub: contact not found.');
hub_return(false, '');
}
if(! link_compare($hub_topic,$r[0]['poll'])) {
logger('pubsub: hub topic ' . $hub_topic . ' != ' . $r[0]['poll']);
// should abort but let's humour them.
}
$contact = $r[0];
// We must initiate an unsubscribe request with a verify_token.
// Don't allow outsiders to unsubscribe us.
if($hub_mode === 'unsubscribe') {
if(! strlen($hub_verify)) {
logger('pubsub: bogus unsubscribe');
hub_return(false, '');
}
logger('pubsub: unsubscribe success');
}
$r = q("UPDATE `contact` SET `subhub` = %d WHERE `id` = %d LIMIT 1",
intval($subscribe),
intval($contact['id'])
);
hub_return(true, $hub_challenge);
}
}
require_once('include/security.php');
function pubsub_post(&$a) {
$xml = file_get_contents('php://input');
logger('pubsub: feed arrived from ' . $_SERVER['REMOTE_ADDR'] . ' for ' . $a->cmd );
logger('pubsub: user-agent: ' . $_SERVER['HTTP_USER_AGENT'] );
logger('pubsub: data: ' . $xml, LOGGER_DATA);
// if(! stristr($xml,'<?xml')) {
// logger('pubsub_post: bad xml');
// hub_post_return();
// }
$nick = (($a->argc > 1) ? notags(trim($a->argv[1])) : '');
$contact_id = (($a->argc > 2) ? intval($a->argv[2]) : 0 );
$r = q("SELECT * FROM `user` WHERE `nickname` = '%s' AND `account_expired` = 0 LIMIT 1",
dbesc($nick)
);
if(! count($r))
hub_post_return();
$importer = $r[0];
$r = q("SELECT * FROM `contact` WHERE `subhub` = 1 AND `id` = %d AND `uid` = %d
AND ( `rel` = %d OR `rel` = %d ) AND `blocked` = 0 AND `readonly` = 0 LIMIT 1",
intval($contact_id),
intval($importer['uid']),
intval(CONTACT_IS_SHARING),
intval(CONTACT_IS_FRIEND)
);
if(! count($r)) {
logger('pubsub: no contact record - ignored');
hub_post_return();
}
$contact = $r[0];
// we have no way to match Diaspora guid's with atom post id's and could get duplicates.
// we'll assume that direct delivery is robust (and this is a bad assumption, but the duplicates are messy).
if($r[0]['network'] === NETWORK_DIASPORA)
hub_post_return();
$feedhub = '';
require_once('include/items.php');
consume_feed($xml,$importer,$contact,$feedhub,1,1);
// do it a second time so that any children find their parents.
consume_feed($xml,$importer,$contact,$feedhub,1,2);
hub_post_return();
}
|
