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1 <?php
2
3 require_once("boot.php");
4 require_once("include/socgraph.php");
5
6
7 function discover_poco_run(&$argv, &$argc){
8         global $a, $db;
9
10         if(is_null($a)) {
11                 $a = new App;
12         }
13
14         if(is_null($db)) {
15             @include(".htconfig.php");
16         require_once("include/dba.php");
17             $db = new dba($db_host, $db_user, $db_pass, $db_data);
18         unset($db_host, $db_user, $db_pass, $db_data);
19         };
20
21         require_once('include/session.php');
22         require_once('include/datetime.php');
23         require_once('include/pidfile.php');
24
25         load_config('config');
26         load_config('system');
27
28         $maxsysload = intval(get_config('system','maxloadavg'));
29         if($maxsysload < 1)
30                 $maxsysload = 50;
31
32         $load = current_load();
33         if($load) {
34                 if(intval($load) > $maxsysload) {
35                         logger('system: load ' . $load . ' too high. discover_poco deferred to next scheduled run.');
36                         return;
37                 }
38         }
39
40         if(($argc > 2) && ($argv[1] == "dirsearch")) {
41                 $search = urldecode($argv[2]);
42                 $mode = 1;
43         } elseif(($argc == 2) && ($argv[1] == "checkcontact")) {
44                 $mode = 2;
45         } elseif(($argc == 2) && ($argv[1] == "suggestions")) {
46                 $mode = 3;
47         } elseif ($argc == 1) {
48                 $search = "";
49                 $mode = 0;
50         } else
51                 die("Unknown or missing parameter ".$argv[1]."\n");
52
53         $lockpath = get_lockpath();
54         if ($lockpath != '') {
55                 $pidfile = new pidfile($lockpath, 'discover_poco'.$mode.urlencode($search));
56                 if($pidfile->is_already_running()) {
57                         logger("discover_poco: Already running");
58                         if ($pidfile->running_time() > 19*60) {
59                                 $pidfile->kill();
60                                 logger("discover_poco: killed stale process");
61                                 // Calling a new instance
62                                 if ($mode == 0)
63                                         proc_run('php','include/discover_poco.php');
64                         }
65                         exit;
66                 }
67         }
68
69         $a->set_baseurl(get_config('system','url'));
70
71         load_hooks();
72
73         logger('start '.$search);
74
75         if ($mode==3)
76                 update_suggestions();
77         elseif (($mode == 2) AND get_config('system','poco_completion'))
78                 discover_users();
79         elseif (($mode == 1) AND ($search != "") and get_config('system','poco_local_search')) {
80                 discover_directory($search);
81                 gs_search_user($search);
82         } elseif (($mode == 0) AND ($search == "") and (get_config('system','poco_discovery') > 0)) {
83                 // Query Friendica and Hubzilla servers for their users
84                 poco_discover();
85
86                 // Query GNU Social servers for their users ("statistics" addon has to be enabled on the GS server)
87                 if (!get_config('system','ostatus_disabled'))
88                         gs_discover();
89         }
90
91         logger('end '.$search);
92
93         return;
94 }
95
96 function discover_users() {
97         logger("Discover users", LOGGER_DEBUG);
98
99         $users = q("SELECT `url`, `created`, `updated`, `last_failure`, `last_contact`, `server_url` FROM `gcontact`
100                         WHERE `last_contact` < UTC_TIMESTAMP - INTERVAL 1 MONTH AND
101                                 `last_failure` < UTC_TIMESTAMP - INTERVAL 1 MONTH AND
102                                 `network` IN ('%s', '%s', '%s', '%s', '') ORDER BY rand()",
103                         dbesc(NETWORK_DFRN), dbesc(NETWORK_DIASPORA),
104                         dbesc(NETWORK_OSTATUS), dbesc(NETWORK_FEED));
105
106         if (!$users)
107                 return;
108
109         $checked = 0;
110
111         foreach ($users AS $user) {
112
113                 $urlparts = parse_url($user["url"]);
114                 if (!isset($urlparts["scheme"])) {
115                         q("UPDATE `gcontact` SET `network` = '%s' WHERE `nurl` = '%s'",
116                                 dbesc(NETWORK_PHANTOM), dbesc(normalise_link($user["url"])));
117                         continue;
118                  }
119
120                 if (in_array($urlparts["host"], array("www.facebook.com", "facebook.com", "twitter.com",
121                                                         "identi.ca", "alpha.app.net"))) {
122                         $networks = array("www.facebook.com" => NETWORK_FACEBOOK,
123                                         "facebook.com" => NETWORK_FACEBOOK,
124                                         "twitter.com" => NETWORK_TWITTER,
125                                         "identi.ca" => NETWORK_PUMPIO,
126                                         "alpha.app.net" => NETWORK_APPNET);
127
128                         q("UPDATE `gcontact` SET `network` = '%s' WHERE `nurl` = '%s'",
129                                 dbesc($networks[$urlparts["host"]]), dbesc(normalise_link($user["url"])));
130                         continue;
131                 }
132
133                 if ($user["server_url"] != "")
134                         $server_url = $user["server_url"];
135                 else
136                         $server_url = poco_detect_server($user["url"]);
137
138                 if (($server_url == "") OR poco_check_server($server_url, $gcontacts[0]["network"])) {
139                         logger('Check user '.$user["url"]);
140                         poco_last_updated($user["url"], true);
141
142                         if (++$checked > 100)
143                                 return;
144                 } else
145                         q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
146                                 dbesc(datetime_convert()), dbesc(normalise_link($user["url"])));
147         }
148 }
149
150 function discover_directory($search) {
151
152         $data = Cache::get("dirsearch:".$search);
153         if (!is_null($data)){
154                 // Only search for the same item every 24 hours
155                 if (time() < $data + (60 * 60 * 24)) {
156                         logger("Already searched for ".$search." in the last 24 hours", LOGGER_DEBUG);
157                         return;
158                 }
159         }
160
161         $x = fetch_url(get_server()."/lsearch?p=1&n=500&search=".urlencode($search));
162         $j = json_decode($x);
163
164         if(count($j->results))
165                 foreach($j->results as $jj) {
166                         // Check if the contact already exists
167                         $exists = q("SELECT `id`, `last_contact`, `last_failure`, `updated` FROM `gcontact` WHERE `nurl` = '%s'", normalise_link($jj->url));
168                         if ($exists) {
169                                 logger("Profile ".$jj->url." already exists (".$search.")", LOGGER_DEBUG);
170
171                                 if (($exists[0]["last_contact"] < $exists[0]["last_failure"]) AND
172                                         ($exists[0]["updated"] < $exists[0]["last_failure"]))
173                                         continue;
174
175                                 // Update the contact
176                                 poco_last_updated($jj->url);
177                                 continue;
178                         }
179
180                         // Harcoded paths aren't so good. But in this case it is okay.
181                         // First: We only will get Friendica contacts (which always are using this url schema)
182                         // Second: There will be no further problems if we are doing a mistake
183                         $server_url = preg_replace("=(https?://)(.*)/profile/(.*)=ism", "$1$2", $jj->url);
184                         if ($server_url != $jj->url)
185                                 if (!poco_check_server($server_url)) {
186                                         logger("Friendica server ".$server_url." doesn't answer.", LOGGER_DEBUG);
187                                         continue;
188                                 }
189                                         logger("Friendica server ".$server_url." seems to be okay.", LOGGER_DEBUG);
190
191                         logger("Check if profile ".$jj->url." is reachable (".$search.")", LOGGER_DEBUG);
192                         $data = probe_url($jj->url);
193                         if ($data["network"] == NETWORK_DFRN) {
194                                 logger("Add profile ".$jj->url." to local directory (".$search.")", LOGGER_DEBUG);
195                                 poco_check($data["url"], $data["name"], $data["network"], $data["photo"], "", "", "", $jj->tags, $data["addr"], "", 0);
196                         }
197                 }
198         Cache::set("dirsearch:".$search, time(), CACHE_DAY);
199 }
200
201 /**
202  * @brief Search for GNU Social user with gstools.org
203  *
204  * @param str $search User name
205  */
206 function gs_search_user($search) {
207
208         $a = get_app();
209
210         $url = "http://gstools.org/api/users_search/".urlencode($search);
211
212         $result = z_fetch_url($url);
213         if (!$result["success"])
214                 return false;
215
216         $contacts = json_decode($result["body"]);
217
218         if ($contacts->status == 'ERROR')
219                 return false;
220
221         foreach($contacts->data AS $user) {
222                 $contact = probe_url($user->site_address."/".$user->name);
223                 if ($contact["network"] != NETWORK_PHANTOM) {
224                         $contact["about"] = $user->description;
225                         update_gcontact($contact);
226                 }
227         }
228 }
229
230
231 if (array_search(__file__,get_included_files())===0){
232   discover_poco_run($_SERVER["argv"],$_SERVER["argc"]);
233   killme();
234 }