summaryrefslogtreecommitdiff
path: root/plugins/RSSCloud/RSSCloudRequestNotify.php
blob: 8b5deb13655f7b52d5403c2b47e8ede80ebbd93c (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
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
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
<?php

/**
 * Action to let RSSCloud aggregators request update notification when
 * user profile feeds change.
 *
 * PHP version 5
 *
 * @category Plugin
 * @package  StatusNet
 * @author   Zach Copley <zach@status.net>
 * @license  http://www.fsf.org/licensing/licenses/agpl.html AGPLv3
 * @link     http://status.net/
 *
 * StatusNet - the distributed open-source microblogging tool
 * Copyright (C) 2009, StatusNet, 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('STATUSNET')) {
    exit(1);
}

class RSSCloudRequestNotifyAction extends Action
{
    /**
     * Initialization.
     *
     * @param array $args Web and URL arguments
     *
     * @return boolean false if user doesn't exist
     */
    function prepare($args)
    {
        parent::prepare($args);

        $this->ip        = $_SERVER['REMOTE_ADDR'];
        $this->port      = $this->arg('port');
        $this->path      = $this->arg('path');
        $this->protocol  = $this->arg('protocol');
        $this->procedure = $this->arg('notifyProcedure');
        $this->domain    = $this->arg('domain');
        
        $this->feeds     = $this->getFeeds();

        return true;
    }

    function handle($args)
    {
        parent::handle($args);

        if ($_SERVER['REQUEST_METHOD'] != 'POST') {
            $this->showResult(false, 'Request must be POST.');
            return;
        }

        $missing = array();

        if (empty($this->port)) {
            $missing[] = 'port';
        }

        $path = $this->arg('path');

        if (empty($this->path)) {
            $missing[] = 'path';
        }

        $protocol = $this->arg('protocol');

        if (empty($this->protocol)) {
            $missing[] = 'protocol';
        }

        if (!isset($this->procedure)) {
            $missing[] = 'notifyProcedure';
        }

        if (!empty($missing)) {
            $msg = 'The following parameters were missing from the request body: ' .
                implode(', ', $missing) . '.';
            $this->showResult(false, $msg);
            return;
        }

        if (empty($this->feeds)) {
            $this->showResult(false,
                              'You must provide at least one valid profile feed url (url1, url2, url3 ... urlN).');
            return;
        }

        // We have to validate everything before saving anything.
        // We only return one success or failure no matter how 
        // many feeds the subscriber is trying to subscribe to

        foreach ($this->feeds as $feed) {
            
            if (!$this->validateFeed($feed)) {
                $msg = 'Feed subscription failed - Not a valid feed.';
                $this->showResult(false, $msg);
                return;
            }
            
            if (!$this->testNotificationHandler($feed)) {
                $msg = 'Feed subscription failed - ' .
                'notification handler doesn\'t respond correctly.';
                $this->showResult(false, $msg);
                return;  
            }
            
        }

        foreach ($this->feeds as $feed) {
            $this->saveSubscription($feed);
        } 

        // XXX: What to do about deleting stale subscriptions?  25 hours seems harsh.
        // WordPress doesn't ever remove subscriptions.

        $msg = 'Thanks for the registration. It worked. When the feed(s) update(s) we\'ll notify you. ' .
               ' Don\'t forget to re-register after 24 hours, your subscription will expire in 25.';

        $this->showResult(true, $msg);        
    }

    function validateFeed($feed)
    {
        $user = $this->userFromFeed($feed);

        if (empty($user)) {
            return false;
        }

        return true;
    }


    function getFeeds()
    {
        $feeds = array();
            
        while (list($key, $feed) = each ($this->args)) {            
            if (preg_match('/^url\d*$/', $key)) {
                $feeds[] = $feed;
            } 
        }

        return $feeds;
    }

    function testNotificationHandler($feed)
    {        
        common_debug("RSSCloudPlugin - testNotificationHandler()");
        
        $notifier = new RSSCloudNotifier();
        
        if (isset($this->domain)) {
            
            //get
            
            $this->url = 'http://' . $this->domain . ':' . $this->port . '/' . $this->path;
            
            common_debug('domain set need to send challenge');
            
        } else {
            
            //post
            
            $this->url = 'http://' . $this->ip . ':' . $this->port . '/' . $this->path;
            
            //return $notifier->postUpdate($endpoint, $feed);

        }   

        return true;

    }

    function userFromFeed($feed)
    {
        // We only do profile feeds

        $path = common_path('api/statuses/user_timeline/');
        $valid = '%^' . $path . '(?<nickname>.*)\.rss$%';

        if (preg_match($valid, $feed, $matches)) {
            $user = User::staticGet('nickname', $matches['nickname']);
            if (!empty($user)) {
                return $user;
            }
        }

        return false;
    }

    function saveSubscription($feed)
    {
        $user = $this->userFromFeed($feed);
        
        common_debug('user = ' . $user->id);
        
        $sub = RSSCloudSubscription::getSubscription($user->id, $this->url);
        
        if ($sub) {
            common_debug("already subscribed to that!");
        } else {
            common_debug('No feed for user ' . $user->id . ' notify: ' . $this->url);
        }
        
        common_debug('RSSPlugin - saveSubscription');
        // turn debugging high
        DB_DataObject::debugLevel(5);
        
        $sub = new RSSCloudSubscription();
        
        $sub->subscribed = $user->id;
        $sub->url        = $this->url;
        $sub->created    = common_sql_now();
        
        // auto timestamp doesn't seem to work for me
        
        $sub->modified   = common_sql_now();
        
        if (!$sub->insert()) {
            common_log_db_error($sub, 'INSERT', __FILE__);
            return false;
        }
        DB_DataObject::debugLevel();
        
        return true;
    }

    function showResult($success, $msg)
    {
        $this->startXML();
        $this->elementStart('notifyResult', array('success' => ($success) ? 'true' : 'false',
                                                  'msg'     => $msg));
        $this->endXML();
    }

}