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[friendica.git] / include / ostatus.php
1 <?php
2 /**
3  * @file include/ostatus.php
4  */
5
6 require_once("include/Contact.php");
7 require_once("include/threads.php");
8 require_once("include/html2bbcode.php");
9 require_once("include/bbcode.php");
10 require_once("include/items.php");
11 require_once("mod/share.php");
12 require_once("include/enotify.php");
13 require_once("include/socgraph.php");
14 require_once("include/Photo.php");
15 require_once("include/Scrape.php");
16 require_once("include/follow.php");
17 require_once("include/api.php");
18 require_once("mod/proxy.php");
19 require_once("include/xml.php");
20
21 /**
22  * @brief This class contain functions for the OStatus protocol
23  *
24  */
25 class ostatus {
26         const OSTATUS_DEFAULT_POLL_INTERVAL = 30; // given in minutes
27         const OSTATUS_DEFAULT_POLL_TIMEFRAME = 1440; // given in minutes
28         const OSTATUS_DEFAULT_POLL_TIMEFRAME_MENTIONS = 14400; // given in minutes
29
30         /**
31          * @brief Fetches author data
32          *
33          * @param object $xpath The xpath object
34          * @param object $context The xml context of the author detals
35          * @param array $importer user record of the importing user
36          * @param array $contact Called by reference, will contain the fetched contact
37          * @param bool $onlyfetch Only fetch the header without updating the contact entries
38          *
39          * @return array Array of author related entries for the item
40          */
41         private function fetchauthor($xpath, $context, $importer, &$contact, $onlyfetch) {
42
43                 $author = array();
44                 $author["author-link"] = $xpath->evaluate('atom:author/atom:uri/text()', $context)->item(0)->nodeValue;
45                 $author["author-name"] = $xpath->evaluate('atom:author/atom:name/text()', $context)->item(0)->nodeValue;
46
47                 $aliaslink = $author["author-link"];
48
49                 $alternate = $xpath->query("atom:author/atom:link[@rel='alternate']", $context)->item(0)->attributes;
50                 if (is_object($alternate))
51                         foreach($alternate AS $attributes)
52                                 if ($attributes->name == "href")
53                                         $author["author-link"] = $attributes->textContent;
54
55                 $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `nurl` IN ('%s', '%s') AND `network` != '%s'",
56                         intval($importer["uid"]), dbesc(normalise_link($author["author-link"])),
57                         dbesc(normalise_link($aliaslink)), dbesc(NETWORK_STATUSNET));
58                 if ($r) {
59                         $contact = $r[0];
60                         $author["contact-id"] = $r[0]["id"];
61                 } else
62                         $author["contact-id"] = $contact["id"];
63
64                 $avatarlist = array();
65                 $avatars = $xpath->query("atom:author/atom:link[@rel='avatar']", $context);
66                 foreach($avatars AS $avatar) {
67                         $href = "";
68                         $width = 0;
69                         foreach($avatar->attributes AS $attributes) {
70                                 if ($attributes->name == "href")
71                                         $href = $attributes->textContent;
72                                 if ($attributes->name == "width")
73                                         $width = $attributes->textContent;
74                         }
75                         if (($width > 0) AND ($href != ""))
76                                 $avatarlist[$width] = $href;
77                 }
78                 if (count($avatarlist) > 0) {
79                         krsort($avatarlist);
80                         $author["author-avatar"] = current($avatarlist);
81                 }
82
83                 $displayname = $xpath->evaluate('atom:author/poco:displayName/text()', $context)->item(0)->nodeValue;
84                 if ($displayname != "")
85                         $author["author-name"] = $displayname;
86
87                 $author["owner-name"] = $author["author-name"];
88                 $author["owner-link"] = $author["author-link"];
89                 $author["owner-avatar"] = $author["author-avatar"];
90
91                 // Only update the contacts if it is an OStatus contact
92                 if ($r AND !$onlyfetch AND ($contact["network"] == NETWORK_OSTATUS)) {
93
94                         // Update contact data
95
96                         // This query doesn't seem to work
97                         // $value = $xpath->query("atom:link[@rel='salmon']", $context)->item(0)->nodeValue;
98                         // if ($value != "")
99                         //      $contact["notify"] = $value;
100
101                         // This query doesn't seem to work as well - I hate these queries
102                         // $value = $xpath->query("atom:link[@rel='self' and @type='application/atom+xml']", $context)->item(0)->nodeValue;
103                         // if ($value != "")
104                         //      $contact["poll"] = $value;
105
106                         $value = $xpath->evaluate('atom:author/atom:uri/text()', $context)->item(0)->nodeValue;
107                         if ($value != "")
108                                 $contact["alias"] = $value;
109
110                         $value = $xpath->evaluate('atom:author/poco:displayName/text()', $context)->item(0)->nodeValue;
111                         if ($value != "")
112                                 $contact["name"] = $value;
113
114                         $value = $xpath->evaluate('atom:author/poco:preferredUsername/text()', $context)->item(0)->nodeValue;
115                         if ($value != "")
116                                 $contact["nick"] = $value;
117
118                         $value = $xpath->evaluate('atom:author/poco:note/text()', $context)->item(0)->nodeValue;
119                         if ($value != "")
120                                 $contact["about"] = html2bbcode($value);
121
122                         $value = $xpath->evaluate('atom:author/poco:address/poco:formatted/text()', $context)->item(0)->nodeValue;
123                         if ($value != "")
124                                 $contact["location"] = $value;
125
126                         if (($contact["name"] != $r[0]["name"]) OR ($contact["nick"] != $r[0]["nick"]) OR ($contact["about"] != $r[0]["about"]) OR
127                                 ($contact["alias"] != $r[0]["alias"]) OR ($contact["location"] != $r[0]["location"])) {
128
129                                 logger("Update contact data for contact ".$contact["id"], LOGGER_DEBUG);
130
131                                 q("UPDATE `contact` SET `name` = '%s', `nick` = '%s', `alias` = '%s', `about` = '%s', `location` = '%s', `name-date` = '%s' WHERE `id` = %d",
132                                         dbesc($contact["name"]), dbesc($contact["nick"]), dbesc($contact["alias"]),
133                                         dbesc($contact["about"]), dbesc($contact["location"]),
134                                         dbesc(datetime_convert()), intval($contact["id"]));
135
136                                 poco_check($contact["url"], $contact["name"], $contact["network"], $author["author-avatar"], $contact["about"], $contact["location"],
137                                                         "", "", "", datetime_convert(), 2, $contact["id"], $contact["uid"]);
138                         }
139
140                         if (isset($author["author-avatar"]) AND ($author["author-avatar"] != $r[0]['avatar'])) {
141                                 logger("Update profile picture for contact ".$contact["id"], LOGGER_DEBUG);
142
143                                 update_contact_avatar($author["author-avatar"], $importer["uid"], $contact["id"]);
144                         }
145
146                         // Ensure that we are having this contact (with uid=0)
147                         $cid = get_contact($author["author-link"], 0);
148
149                         if ($cid) {
150                                 // Update it with the current values
151                                 q("UPDATE `contact` SET `url` = '%s', `name` = '%s', `nick` = '%s', `alias` = '%s',
152                                                 `about` = '%s', `location` = '%s',
153                                                 `success_update` = '%s', `last-update` = '%s'
154                                         WHERE `id` = %d",
155                                         dbesc($author["author-link"]), dbesc($contact["name"]), dbesc($contact["nick"]),
156                                         dbesc($contact["alias"]), dbesc($contact["about"]), dbesc($contact["location"]),
157                                         dbesc(datetime_convert()), dbesc(datetime_convert()), intval($cid));
158
159                                 // Update the avatar
160                                 update_contact_avatar($author["author-avatar"], 0, $cid);
161                         }
162
163                         $contact["generation"] = 2;
164                         $contact["hide"] = false; // OStatus contacts are never hidden
165                         $contact["photo"] = $author["author-avatar"];
166                         update_gcontact($contact);
167                 }
168
169                 return($author);
170         }
171
172         /**
173          * @brief Fetches author data from a given XML string
174          *
175          * @param string $xml The XML
176          * @param array $importer user record of the importing user
177          *
178          * @return array Array of author related entries for the item
179          */
180         public static function salmon_author($xml, $importer) {
181
182                 if ($xml == "")
183                         return;
184
185                 $doc = new DOMDocument();
186                 @$doc->loadXML($xml);
187
188                 $xpath = new DomXPath($doc);
189                 $xpath->registerNamespace('atom', NAMESPACE_ATOM1);
190                 $xpath->registerNamespace('thr', NAMESPACE_THREAD);
191                 $xpath->registerNamespace('georss', NAMESPACE_GEORSS);
192                 $xpath->registerNamespace('activity', NAMESPACE_ACTIVITY);
193                 $xpath->registerNamespace('media', NAMESPACE_MEDIA);
194                 $xpath->registerNamespace('poco', NAMESPACE_POCO);
195                 $xpath->registerNamespace('ostatus', NAMESPACE_OSTATUS);
196                 $xpath->registerNamespace('statusnet', NAMESPACE_STATUSNET);
197
198                 $entries = $xpath->query('/atom:entry');
199
200                 foreach ($entries AS $entry) {
201                         // fetch the author
202                         $author = self::fetchauthor($xpath, $entry, $importer, $contact, true);
203                         return $author;
204                 }
205         }
206
207         /**
208          * @brief Imports an XML string containing OStatus elements
209          *
210          * @param string $xml The XML
211          * @param array $importer user record of the importing user
212          * @param $contact
213          * @param array $hub Called by reference, returns the fetched hub data
214          */
215         public static function import($xml,$importer,&$contact, &$hub) {
216                 /// @todo this function is too long. It has to be split in many parts
217
218                 logger("Import OStatus message", LOGGER_DEBUG);
219
220                 if ($xml == "")
221                         return;
222
223                 //$tempfile = tempnam(get_temppath(), "import");
224                 //file_put_contents($tempfile, $xml);
225
226                 $doc = new DOMDocument();
227                 @$doc->loadXML($xml);
228
229                 $xpath = new DomXPath($doc);
230                 $xpath->registerNamespace('atom', NAMESPACE_ATOM1);
231                 $xpath->registerNamespace('thr', NAMESPACE_THREAD);
232                 $xpath->registerNamespace('georss', NAMESPACE_GEORSS);
233                 $xpath->registerNamespace('activity', NAMESPACE_ACTIVITY);
234                 $xpath->registerNamespace('media', NAMESPACE_MEDIA);
235                 $xpath->registerNamespace('poco', NAMESPACE_POCO);
236                 $xpath->registerNamespace('ostatus', NAMESPACE_OSTATUS);
237                 $xpath->registerNamespace('statusnet', NAMESPACE_STATUSNET);
238
239                 $gub = "";
240                 $hub_attributes = $xpath->query("/atom:feed/atom:link[@rel='hub']")->item(0)->attributes;
241                 if (is_object($hub_attributes))
242                         foreach($hub_attributes AS $hub_attribute)
243                                 if ($hub_attribute->name == "href") {
244                                         $hub = $hub_attribute->textContent;
245                                         logger("Found hub ".$hub, LOGGER_DEBUG);
246                                 }
247
248                 $header = array();
249                 $header["uid"] = $importer["uid"];
250                 $header["network"] = NETWORK_OSTATUS;
251                 $header["type"] = "remote";
252                 $header["wall"] = 0;
253                 $header["origin"] = 0;
254                 $header["gravity"] = GRAVITY_PARENT;
255
256                 // it could either be a received post or a post we fetched by ourselves
257                 // depending on that, the first node is different
258                 $first_child = $doc->firstChild->tagName;
259
260                 if ($first_child == "feed")
261                         $entries = $xpath->query('/atom:feed/atom:entry');
262                 else
263                         $entries = $xpath->query('/atom:entry');
264
265                 $conversation = "";
266                 $conversationlist = array();
267                 $item_id = 0;
268
269                 // Reverse the order of the entries
270                 $entrylist = array();
271
272                 foreach ($entries AS $entry)
273                         $entrylist[] = $entry;
274
275                 foreach (array_reverse($entrylist) AS $entry) {
276
277                         $mention = false;
278
279                         // fetch the author
280                         if ($first_child == "feed")
281                                 $author = self::fetchauthor($xpath, $doc->firstChild, $importer, $contact, false);
282                         else
283                                 $author = self::fetchauthor($xpath, $entry, $importer, $contact, false);
284
285                         $value = $xpath->evaluate('atom:author/poco:preferredUsername/text()', $context)->item(0)->nodeValue;
286                         if ($value != "")
287                                 $nickname = $value;
288                         else
289                                 $nickname = $author["author-name"];
290
291                         $item = array_merge($header, $author);
292
293                         // Now get the item
294                         $item["uri"] = $xpath->query('atom:id/text()', $entry)->item(0)->nodeValue;
295
296                         $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `uri` = '%s'",
297                                 intval($importer["uid"]), dbesc($item["uri"]));
298                         if ($r) {
299                                 logger("Item with uri ".$item["uri"]." for user ".$importer["uid"]." already existed under id ".$r[0]["id"], LOGGER_DEBUG);
300                                 continue;
301                         }
302
303                         $item["body"] = add_page_info_to_body(html2bbcode($xpath->query('atom:content/text()', $entry)->item(0)->nodeValue));
304                         $item["object-type"] = $xpath->query('activity:object-type/text()', $entry)->item(0)->nodeValue;
305
306                         if (($item["object-type"] == ACTIVITY_OBJ_BOOKMARK) OR ($item["object-type"] == ACTIVITY_OBJ_EVENT)) {
307                                 $item["title"] = $xpath->query('atom:title/text()', $entry)->item(0)->nodeValue;
308                                 $item["body"] = $xpath->query('atom:summary/text()', $entry)->item(0)->nodeValue;
309                         } elseif ($item["object-type"] == ACTIVITY_OBJ_QUESTION)
310                                 $item["title"] = $xpath->query('atom:title/text()', $entry)->item(0)->nodeValue;
311
312                         $item["object"] = $xml;
313                         $item["verb"] = $xpath->query('activity:verb/text()', $entry)->item(0)->nodeValue;
314
315                         /// @TODO
316                         /// Delete a message
317                         if ($item["verb"] == "qvitter-delete-notice") {
318                                 // ignore "Delete" messages (by now)
319                                 logger("Ignore delete message ".print_r($item, true));
320                                 continue;
321                         }
322
323                         if ($item["verb"] == ACTIVITY_JOIN) {
324                                 // ignore "Join" messages
325                                 logger("Ignore join message ".print_r($item, true));
326                                 continue;
327                         }
328
329                         if ($item["verb"] == ACTIVITY_FOLLOW) {
330                                 new_follower($importer, $contact, $item, $nickname);
331                                 continue;
332                         }
333
334                         if ($item["verb"] == NAMESPACE_OSTATUS."/unfollow") {
335                                 lose_follower($importer, $contact, $item, $dummy);
336                                 continue;
337                         }
338
339                         if ($item["verb"] == ACTIVITY_FAVORITE) {
340                                 $orig_uri = $xpath->query("activity:object/atom:id", $entry)->item(0)->nodeValue;
341                                 logger("Favorite ".$orig_uri." ".print_r($item, true));
342
343                                 $item["verb"] = ACTIVITY_LIKE;
344                                 $item["parent-uri"] = $orig_uri;
345                                 $item["gravity"] = GRAVITY_LIKE;
346                         }
347
348                         if ($item["verb"] == NAMESPACE_OSTATUS."/unfavorite") {
349                                 // Ignore "Unfavorite" message
350                                 logger("Ignore unfavorite message ".print_r($item, true));
351                                 continue;
352                         }
353
354                         // http://activitystrea.ms/schema/1.0/rsvp-yes
355                         if (!in_array($item["verb"], array(ACTIVITY_POST, ACTIVITY_LIKE, ACTIVITY_SHARE)))
356                                 logger("Unhandled verb ".$item["verb"]." ".print_r($item, true));
357
358                         $item["created"] = $xpath->query('atom:published/text()', $entry)->item(0)->nodeValue;
359                         $item["edited"] = $xpath->query('atom:updated/text()', $entry)->item(0)->nodeValue;
360                         $conversation = $xpath->query('ostatus:conversation/text()', $entry)->item(0)->nodeValue;
361
362                         $related = "";
363
364                         $inreplyto = $xpath->query('thr:in-reply-to', $entry);
365                         if (is_object($inreplyto->item(0))) {
366                                 foreach($inreplyto->item(0)->attributes AS $attributes) {
367                                         if ($attributes->name == "ref")
368                                                 $item["parent-uri"] = $attributes->textContent;
369                                         if ($attributes->name == "href")
370                                                 $related = $attributes->textContent;
371                                 }
372                         }
373
374                         $georsspoint = $xpath->query('georss:point', $entry);
375                         if ($georsspoint)
376                                 $item["coord"] = $georsspoint->item(0)->nodeValue;
377
378                         $categories = $xpath->query('atom:category', $entry);
379                         if ($categories) {
380                                 foreach ($categories AS $category) {
381                                         foreach($category->attributes AS $attributes)
382                                                 if ($attributes->name == "term") {
383                                                         $term = $attributes->textContent;
384                                                         if(strlen($item["tag"]))
385                                                                 $item["tag"] .= ',';
386                                                         $item["tag"] .= "#[url=".App::get_baseurl()."/search?tag=".$term."]".$term."[/url]";
387                                                 }
388                                 }
389                         }
390
391                         $self = "";
392                         $enclosure = "";
393
394                         $links = $xpath->query('atom:link', $entry);
395                         if ($links) {
396                                 $rel = "";
397                                 $href = "";
398                                 $type = "";
399                                 $length = "0";
400                                 $title = "";
401                                 foreach ($links AS $link) {
402                                         foreach($link->attributes AS $attributes) {
403                                                 if ($attributes->name == "href")
404                                                         $href = $attributes->textContent;
405                                                 if ($attributes->name == "rel")
406                                                         $rel = $attributes->textContent;
407                                                 if ($attributes->name == "type")
408                                                         $type = $attributes->textContent;
409                                                 if ($attributes->name == "length")
410                                                         $length = $attributes->textContent;
411                                                 if ($attributes->name == "title")
412                                                         $title = $attributes->textContent;
413                                         }
414                                         if (($rel != "") AND ($href != ""))
415                                                 switch($rel) {
416                                                         case "alternate":
417                                                                 $item["plink"] = $href;
418                                                                 if (($item["object-type"] == ACTIVITY_OBJ_QUESTION) OR
419                                                                         ($item["object-type"] == ACTIVITY_OBJ_EVENT))
420                                                                         $item["body"] .= add_page_info($href);
421                                                                 break;
422                                                         case "ostatus:conversation":
423                                                                 $conversation = $href;
424                                                                 break;
425                                                         case "enclosure":
426                                                                 $enclosure = $href;
427                                                                 if(strlen($item["attach"]))
428                                                                         $item["attach"] .= ',';
429
430                                                                 $item["attach"] .= '[attach]href="'.$href.'" length="'.$length.'" type="'.$type.'" title="'.$title.'"[/attach]';
431                                                                 break;
432                                                         case "related":
433                                                                 if ($item["object-type"] != ACTIVITY_OBJ_BOOKMARK) {
434                                                                         if (!isset($item["parent-uri"]))
435                                                                                 $item["parent-uri"] = $href;
436
437                                                                         if ($related == "")
438                                                                                 $related = $href;
439                                                                 } else
440                                                                         $item["body"] .= add_page_info($href);
441                                                                 break;
442                                                         case "self":
443                                                                 $self = $href;
444                                                                 break;
445                                                         case "mentioned":
446                                                                 // Notification check
447                                                                 if ($importer["nurl"] == normalise_link($href))
448                                                                         $mention = true;
449                                                                 break;
450                                                 }
451                                 }
452                         }
453
454                         $local_id = "";
455                         $repeat_of = "";
456
457                         $notice_info = $xpath->query('statusnet:notice_info', $entry);
458                         if ($notice_info AND ($notice_info->length > 0)) {
459                                 foreach($notice_info->item(0)->attributes AS $attributes) {
460                                         if ($attributes->name == "source")
461                                                 $item["app"] = strip_tags($attributes->textContent);
462                                         if ($attributes->name == "local_id")
463                                                 $local_id = $attributes->textContent;
464                                         if ($attributes->name == "repeat_of")
465                                                 $repeat_of = $attributes->textContent;
466                                 }
467                         }
468
469                         // Is it a repeated post?
470                         if ($repeat_of != "") {
471                                 $activityobjects = $xpath->query('activity:object', $entry)->item(0);
472
473                                 if (is_object($activityobjects)) {
474
475                                         $orig_uri = $xpath->query("activity:object/atom:id", $activityobjects)->item(0)->nodeValue;
476                                         if (!isset($orig_uri))
477                                                 $orig_uri = $xpath->query('atom:id/text()', $activityobjects)->item(0)->nodeValue;
478
479                                         $orig_links = $xpath->query("activity:object/atom:link[@rel='alternate']", $activityobjects);
480                                         if ($orig_links AND ($orig_links->length > 0))
481                                                 foreach($orig_links->item(0)->attributes AS $attributes)
482                                                         if ($attributes->name == "href")
483                                                                 $orig_link = $attributes->textContent;
484
485                                         if (!isset($orig_link))
486                                                 $orig_link = $xpath->query("atom:link[@rel='alternate']", $activityobjects)->item(0)->nodeValue;
487
488                                         if (!isset($orig_link))
489                                                 $orig_link =  self::convert_href($orig_uri);
490
491                                         $orig_body = $xpath->query('activity:object/atom:content/text()', $activityobjects)->item(0)->nodeValue;
492                                         if (!isset($orig_body))
493                                                 $orig_body = $xpath->query('atom:content/text()', $activityobjects)->item(0)->nodeValue;
494
495                                         $orig_created = $xpath->query('atom:published/text()', $activityobjects)->item(0)->nodeValue;
496                                         $orig_edited = $xpath->query('atom:updated/text()', $activityobjects)->item(0)->nodeValue;
497
498                                         $orig_contact = $contact;
499                                         $orig_author = self::fetchauthor($xpath, $activityobjects, $importer, $orig_contact, false);
500
501                                         $item["author-name"] = $orig_author["author-name"];
502                                         $item["author-link"] = $orig_author["author-link"];
503                                         $item["author-avatar"] = $orig_author["author-avatar"];
504                                         $item["body"] = add_page_info_to_body(html2bbcode($orig_body));
505                                         $item["created"] = $orig_created;
506                                         $item["edited"] = $orig_edited;
507
508                                         $item["uri"] = $orig_uri;
509                                         $item["plink"] = $orig_link;
510
511                                         $item["verb"] = $xpath->query('activity:verb/text()', $activityobjects)->item(0)->nodeValue;
512
513                                         $item["object-type"] = $xpath->query('activity:object/activity:object-type/text()', $activityobjects)->item(0)->nodeValue;
514                                         if (!isset($item["object-type"]))
515                                                 $item["object-type"] = $xpath->query('activity:object-type/text()', $activityobjects)->item(0)->nodeValue;
516                                 }
517                         }
518
519                         //if ($enclosure != "")
520                         //      $item["body"] .= add_page_info($enclosure);
521
522                         if (isset($item["parent-uri"])) {
523                                 $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `uri` = '%s'",
524                                         intval($importer["uid"]), dbesc($item["parent-uri"]));
525
526                                 if (!$r AND ($related != "")) {
527                                         $reply_path = str_replace("/notice/", "/api/statuses/show/", $related).".atom";
528
529                                         if ($reply_path != $related) {
530                                                 logger("Fetching related items for user ".$importer["uid"]." from ".$reply_path, LOGGER_DEBUG);
531                                                 $reply_xml = fetch_url($reply_path);
532
533                                                 $reply_contact = $contact;
534                                                 self::import($reply_xml,$importer,$reply_contact, $reply_hub);
535
536                                                 // After the import try to fetch the parent item again
537                                                 $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `uri` = '%s'",
538                                                         intval($importer["uid"]), dbesc($item["parent-uri"]));
539                                         }
540                                 }
541                                 if ($r) {
542                                         $item["type"] = 'remote-comment';
543                                         $item["gravity"] = GRAVITY_COMMENT;
544                                 }
545                         } else
546                                 $item["parent-uri"] = $item["uri"];
547
548                         $item_id = self::completion($conversation, $importer["uid"], $item, $self);
549
550                         if (!$item_id) {
551                                 logger("Error storing item", LOGGER_DEBUG);
552                                 continue;
553                         }
554
555                         logger("Item was stored with id ".$item_id, LOGGER_DEBUG);
556                 }
557         }
558
559         /**
560          * @brief Create an url out of an uri
561          *
562          * @param string $href URI in the format "parameter1:parameter1:..."
563          *
564          * @return string URL in the format http(s)://....
565          */
566         public static function convert_href($href) {
567                 $elements = explode(":",$href);
568
569                 if ((count($elements) <= 2) OR ($elements[0] != "tag"))
570                         return $href;
571
572                 $server = explode(",", $elements[1]);
573                 $conversation = explode("=", $elements[2]);
574
575                 if ((count($elements) == 4) AND ($elements[2] == "post"))
576                         return "http://".$server[0]."/notice/".$elements[3];
577
578                 if ((count($conversation) != 2) OR ($conversation[1] ==""))
579                         return $href;
580
581                 if ($elements[3] == "objectType=thread")
582                         return "http://".$server[0]."/conversation/".$conversation[1];
583                 else
584                         return "http://".$server[0]."/notice/".$conversation[1];
585
586                 return $href;
587         }
588
589         /**
590          * @brief Checks if there are entries in conversations that aren't present on our side
591          *
592          * @param bool $mentions Fetch conversations where we are mentioned
593          * @param bool $override Override the interval setting
594          */
595         public static function check_conversations($mentions = false, $override = false) {
596                 $last = get_config('system','ostatus_last_poll');
597
598                 $poll_interval = intval(get_config('system','ostatus_poll_interval'));
599                 if(! $poll_interval)
600                         $poll_interval = OSTATUS_DEFAULT_POLL_INTERVAL;
601
602                 // Don't poll if the interval is set negative
603                 if (($poll_interval < 0) AND !$override)
604                         return;
605
606                 if (!$mentions) {
607                         $poll_timeframe = intval(get_config('system','ostatus_poll_timeframe'));
608                         if (!$poll_timeframe)
609                                 $poll_timeframe = OSTATUS_DEFAULT_POLL_TIMEFRAME;
610                 } else {
611                         $poll_timeframe = intval(get_config('system','ostatus_poll_timeframe'));
612                         if (!$poll_timeframe)
613                                 $poll_timeframe = OSTATUS_DEFAULT_POLL_TIMEFRAME_MENTIONS;
614                 }
615
616
617                 if ($last AND !$override) {
618                         $next = $last + ($poll_interval * 60);
619                         if ($next > time()) {
620                                 logger('poll interval not reached');
621                                 return;
622                         }
623                 }
624
625                 logger('cron_start');
626
627                 $start = date("Y-m-d H:i:s", time() - ($poll_timeframe * 60));
628
629                 if ($mentions)
630                         $conversations = q("SELECT `term`.`oid`, `term`.`url`, `term`.`uid` FROM `term`
631                                                 STRAIGHT_JOIN `thread` ON `thread`.`iid` = `term`.`oid` AND `thread`.`uid` = `term`.`uid`
632                                                 WHERE `term`.`type` = 7 AND `term`.`term` > '%s' AND `thread`.`mention`
633                                                 GROUP BY `term`.`url`, `term`.`uid` ORDER BY `term`.`term` DESC", dbesc($start));
634                 else
635                         $conversations = q("SELECT `oid`, `url`, `uid` FROM `term`
636                                                 WHERE `type` = 7 AND `term` > '%s'
637                                                 GROUP BY `url`, `uid` ORDER BY `term` DESC", dbesc($start));
638
639                 foreach ($conversations AS $conversation) {
640                         self::completion($conversation['url'], $conversation['uid']);
641                 }
642
643                 logger('cron_end');
644
645                 set_config('system','ostatus_last_poll', time());
646         }
647
648         /**
649          * @brief Updates the gcontact table with actor data from the conversation
650          *
651          * @param object $actor The actor object that contains the contact data
652          */
653         private function conv_fetch_actor($actor) {
654
655                 // We set the generation to "3" since the data here is not as reliable as the data we get on other occasions
656                 $contact = array("network" => NETWORK_OSTATUS, "generation" => 3);
657
658                 if (isset($actor->url))
659                         $contact["url"] = $actor->url;
660
661                 if (isset($actor->displayName))
662                         $contact["name"] = $actor->displayName;
663
664                 if (isset($actor->portablecontacts_net->displayName))
665                         $contact["name"] = $actor->portablecontacts_net->displayName;
666
667                 if (isset($actor->portablecontacts_net->preferredUsername))
668                         $contact["nick"] = $actor->portablecontacts_net->preferredUsername;
669
670                 if (isset($actor->id))
671                         $contact["alias"] = $actor->id;
672
673                 if (isset($actor->summary))
674                         $contact["about"] = $actor->summary;
675
676                 if (isset($actor->portablecontacts_net->note))
677                         $contact["about"] = $actor->portablecontacts_net->note;
678
679                 if (isset($actor->portablecontacts_net->addresses->formatted))
680                         $contact["location"] = $actor->portablecontacts_net->addresses->formatted;
681
682
683                 if (isset($actor->image->url))
684                         $contact["photo"] = $actor->image->url;
685
686                 if (isset($actor->image->width))
687                         $avatarwidth = $actor->image->width;
688
689                 if (is_array($actor->status_net->avatarLinks))
690                         foreach ($actor->status_net->avatarLinks AS $avatar) {
691                                 if ($avatarsize < $avatar->width) {
692                                         $contact["photo"] = $avatar->url;
693                                         $avatarsize = $avatar->width;
694                                 }
695                         }
696
697                 $contact["hide"] = false; // OStatus contacts are never hidden
698                 update_gcontact($contact);
699         }
700
701         /**
702          * @brief Fetches the conversation url for a given item link or conversation id
703          *
704          * @param string $self The link to the posting
705          * @param string $conversation_id The conversation id
706          *
707          * @return string The conversation url
708          */
709         private function fetch_conversation($self, $conversation_id = "") {
710
711                 if ($conversation_id != "") {
712                         $elements = explode(":", $conversation_id);
713
714                         if ((count($elements) <= 2) OR ($elements[0] != "tag"))
715                                 return $conversation_id;
716                 }
717
718                 if ($self == "")
719                         return "";
720
721                 $json = str_replace(".atom", ".json", $self);
722
723                 $raw = fetch_url($json);
724                 if ($raw == "")
725                         return "";
726
727                 $data = json_decode($raw);
728                 if (!is_object($data))
729                         return "";
730
731                 $conversation_id = $data->statusnet_conversation_id;
732
733                 $pos = strpos($self, "/api/statuses/show/");
734                 $base_url = substr($self, 0, $pos);
735
736                 return $base_url."/conversation/".$conversation_id;
737         }
738
739         /**
740          * @brief Fetches actor details of a given actor and user id
741          *
742          * @param string $actor The actor url
743          * @param int $uid The user id
744          * @param int $contact_id The default contact-id
745          *
746          * @return array Array with actor details
747          */
748         private function get_actor_details($actor, $uid, $contact_id) {
749
750                 $details = array();
751
752                 $contact = q("SELECT `id`, `rel`, `network` FROM `contact` WHERE `uid` = %d AND `nurl` = '%s' AND `network` != '%s'",
753                                         $uid, normalise_link($actor), NETWORK_STATUSNET);
754
755                 if (!$contact)
756                         $contact = q("SELECT `id`, `rel`, `network` FROM `contact` WHERE `uid` = %d AND `alias` IN ('%s', '%s') AND `network` != '%s'",
757                                         $uid, $actor, normalise_link($actor), NETWORK_STATUSNET);
758
759                 if ($contact) {
760                         logger("Found contact for url ".$actor, LOGGER_DEBUG);
761                         $details["contact_id"] = $contact[0]["id"];
762                         $details["network"] = $contact[0]["network"];
763
764                         $details["not_following"] = !in_array($contact[0]["rel"], array(CONTACT_IS_SHARING, CONTACT_IS_FRIEND));
765                 } else {
766                         logger("No contact found for user ".$uid." and url ".$actor, LOGGER_DEBUG);
767
768                         // Adding a global contact
769                         /// @TODO Use this data for the post
770                         $details["global_contact_id"] = get_contact($actor, 0);
771
772                         logger("Global contact ".$global_contact_id." found for url ".$actor, LOGGER_DEBUG);
773
774                         $details["contact_id"] = $contact_id;
775                         $details["network"] = NETWORK_OSTATUS;
776
777                         $details["not_following"] = true;
778                 }
779
780                 return $details;
781         }
782
783         /**
784          * @brief Stores an item and completes the thread
785          *
786          * @param string $conversation_url The URI of the conversation
787          * @param integer $uid The user id
788          * @param array $item Data of the item that is to be posted
789          *
790          * @return integer The item id of the posted item array
791          */
792         private function completion($conversation_url, $uid, $item = array(), $self = "") {
793
794                 /// @todo This function is totally ugly and has to be rewritten totally
795
796                 $item_stored = -1;
797
798                 $conversation_url = self::fetch_conversation($self, $conversation_url);
799
800                 // If the thread shouldn't be completed then store the item and go away
801                 // Don't do a completion on liked content
802                 if (((intval(get_config('system','ostatus_poll_interval')) == -2) AND (count($item) > 0)) OR
803                         ($item["verb"] == ACTIVITY_LIKE) OR ($conversation_url == "")) {
804                         $item_stored = item_store($item, true);
805                         return($item_stored);
806                 }
807
808                 // Get the parent
809                 $parents = q("SELECT `id`, `parent`, `uri`, `contact-id`, `type`, `verb`, `visible` FROM `item` WHERE `id` IN
810                                 (SELECT `parent` FROM `item` WHERE `id` IN
811                                         (SELECT `oid` FROM `term` WHERE `uid` = %d AND `otype` = %d AND `type` = %d AND `url` = '%s'))",
812                                 intval($uid), intval(TERM_OBJ_POST), intval(TERM_CONVERSATION), dbesc($conversation_url));
813
814                 if ($parents)
815                         $parent = $parents[0];
816                 elseif (count($item) > 0) {
817                         $parent = $item;
818                         $parent["type"] = "remote";
819                         $parent["verb"] = ACTIVITY_POST;
820                         $parent["visible"] = 1;
821                 } else {
822                         // Preset the parent
823                         $r = q("SELECT `id` FROM `contact` WHERE `self` AND `uid`=%d", $uid);
824                         if (!$r)
825                                 return(-2);
826
827                         $parent = array();
828                         $parent["id"] = 0;
829                         $parent["parent"] = 0;
830                         $parent["uri"] = "";
831                         $parent["contact-id"] = $r[0]["id"];
832                         $parent["type"] = "remote";
833                         $parent["verb"] = ACTIVITY_POST;
834                         $parent["visible"] = 1;
835                 }
836
837                 $conv = str_replace("/conversation/", "/api/statusnet/conversation/", $conversation_url).".as";
838                 $pageno = 1;
839                 $items = array();
840
841                 logger('fetching conversation url '.$conv.' (Self: '.$self.') for user '.$uid);
842
843                 do {
844                         $conv_arr = z_fetch_url($conv."?page=".$pageno);
845
846                         // If it is a non-ssl site and there is an error, then try ssl or vice versa
847                         if (!$conv_arr["success"] AND (substr($conv, 0, 7) == "http://")) {
848                                 $conv = str_replace("http://", "https://", $conv);
849                                 $conv_as = fetch_url($conv."?page=".$pageno);
850                         } elseif (!$conv_arr["success"] AND (substr($conv, 0, 8) == "https://")) {
851                                 $conv = str_replace("https://", "http://", $conv);
852                                 $conv_as = fetch_url($conv."?page=".$pageno);
853                         } else
854                                 $conv_as = $conv_arr["body"];
855
856                         $conv_as = str_replace(',"statusnet:notice_info":', ',"statusnet_notice_info":', $conv_as);
857                         $conv_as = json_decode($conv_as);
858
859                         $no_of_items = sizeof($items);
860
861                         if (@is_array($conv_as->items))
862                                 foreach ($conv_as->items AS $single_item)
863                                         $items[$single_item->id] = $single_item;
864
865                         if ($no_of_items == sizeof($items))
866                                 break;
867
868                         $pageno++;
869
870                 } while (true);
871
872                 logger('fetching conversation done. Found '.count($items).' items');
873
874                 if (!sizeof($items)) {
875                         if (count($item) > 0) {
876                                 $item_stored = item_store($item, true);
877
878                                 if ($item_stored) {
879                                         logger("Conversation ".$conversation_url." couldn't be fetched. Item uri ".$item["uri"]." stored: ".$item_stored, LOGGER_DEBUG);
880                                         self::store_conversation($item_id, $conversation_url);
881                                 }
882
883                                 return($item_stored);
884                         } else
885                                 return(-3);
886                 }
887
888                 $items = array_reverse($items);
889
890                 $r = q("SELECT `nurl` FROM `contact` WHERE `uid` = %d AND `self`", intval($uid));
891                 $importer = $r[0];
892
893                 $new_parent = true;
894
895                 foreach ($items as $single_conv) {
896
897                         // Update the gcontact table
898                         self::conv_fetch_actor($single_conv->actor);
899
900                         // Test - remove before flight
901                         //$tempfile = tempnam(get_temppath(), "conversation");
902                         //file_put_contents($tempfile, json_encode($single_conv));
903
904                         $mention = false;
905
906                         if (isset($single_conv->object->id))
907                                 $single_conv->id = $single_conv->object->id;
908
909                         $plink = self::convert_href($single_conv->id);
910                         if (isset($single_conv->object->url))
911                                 $plink = self::convert_href($single_conv->object->url);
912
913                         if (@!$single_conv->id)
914                                 continue;
915
916                         logger("Got id ".$single_conv->id, LOGGER_DEBUG);
917
918                         if ($first_id == "") {
919                                 $first_id = $single_conv->id;
920
921                                 // The first post of the conversation isn't our first post. There are three options:
922                                 // 1. Our conversation hasn't the "real" thread starter
923                                 // 2. This first post is a post inside our thread
924                                 // 3. This first post is a post inside another thread
925                                 if (($first_id != $parent["uri"]) AND ($parent["uri"] != "")) {
926
927                                         $new_parent = true;
928
929                                         $new_parents = q("SELECT `id`, `parent`, `uri`, `contact-id`, `type`, `verb`, `visible` FROM `item` WHERE `id` IN
930                                                                 (SELECT `parent` FROM `item`
931                                                                         WHERE `uid` = %d AND `uri` = '%s' AND `network` IN ('%s','%s')) LIMIT 1",
932                                                 intval($uid), dbesc($first_id), dbesc(NETWORK_OSTATUS), dbesc(NETWORK_DFRN));
933                                         if ($new_parents) {
934                                                 if ($new_parents[0]["parent"] == $parent["parent"]) {
935                                                         // Option 2: This post is already present inside our thread - but not as thread starter
936                                                         logger("Option 2: uri present in our thread: ".$first_id, LOGGER_DEBUG);
937                                                         $first_id = $parent["uri"];
938                                                 } else {
939                                                         // Option 3: Not so good. We have mixed parents. We have to see how to clean this up.
940                                                         // For now just take the new parent.
941                                                         $parent = $new_parents[0];
942                                                         $first_id = $parent["uri"];
943                                                         logger("Option 3: mixed parents for uri ".$first_id, LOGGER_DEBUG);
944                                                 }
945                                         } else {
946                                                 // Option 1: We hadn't got the real thread starter
947                                                 // We have to clean up our existing messages.
948                                                 $parent["id"] = 0;
949                                                 $parent["uri"] = $first_id;
950                                                 logger("Option 1: we have a new parent: ".$first_id, LOGGER_DEBUG);
951                                         }
952                                 } elseif ($parent["uri"] == "") {
953                                         $parent["id"] = 0;
954                                         $parent["uri"] = $first_id;
955                                 }
956                         }
957
958                         $parent_uri = $parent["uri"];
959
960                         // "context" only seems to exist on older servers
961                         if (isset($single_conv->context->inReplyTo->id)) {
962                                 $parent_exists = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `uri` = '%s' AND `network` IN ('%s','%s') LIMIT 1",
963                                                         intval($uid), dbesc($single_conv->context->inReplyTo->id), dbesc(NETWORK_OSTATUS), dbesc(NETWORK_DFRN));
964                                 if ($parent_exists)
965                                         $parent_uri = $single_conv->context->inReplyTo->id;
966                         }
967
968                         // This is the current way
969                         if (isset($single_conv->object->inReplyTo->id)) {
970                                 $parent_exists = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `uri` = '%s' AND `network` IN ('%s','%s') LIMIT 1",
971                                                         intval($uid), dbesc($single_conv->object->inReplyTo->id), dbesc(NETWORK_OSTATUS), dbesc(NETWORK_DFRN));
972                                 if ($parent_exists)
973                                         $parent_uri = $single_conv->object->inReplyTo->id;
974                         }
975
976                         $message_exists = q("SELECT `id`, `parent`, `uri` FROM `item` WHERE `uid` = %d AND `uri` = '%s' AND `network` IN ('%s','%s') LIMIT 1",
977                                                         intval($uid), dbesc($single_conv->id),
978                                                         dbesc(NETWORK_OSTATUS), dbesc(NETWORK_DFRN));
979                         if ($message_exists) {
980                                 logger("Message ".$single_conv->id." already existed on the system", LOGGER_DEBUG);
981
982                                 if ($parent["id"] != 0) {
983                                         $existing_message = $message_exists[0];
984
985                                         // We improved the way we fetch OStatus messages, this shouldn't happen very often now
986                                         /// @TODO We have to change the shadow copies as well. This way here is really ugly.
987                                         if ($existing_message["parent"] != $parent["id"]) {
988                                                 logger('updating id '.$existing_message["id"].' with parent '.$existing_message["parent"].' to parent '.$parent["id"].' uri '.$parent["uri"].' thread '.$parent_uri, LOGGER_DEBUG);
989
990                                                 // Update the parent id of the selected item
991                                                 $r = q("UPDATE `item` SET `parent` = %d, `parent-uri` = '%s' WHERE `id` = %d",
992                                                         intval($parent["id"]), dbesc($parent["uri"]), intval($existing_message["id"]));
993
994                                                 // Update the parent uri in the thread - but only if it points to itself
995                                                 $r = q("UPDATE `item` SET `thr-parent` = '%s' WHERE `id` = %d AND `uri` = `thr-parent`",
996                                                         dbesc($parent_uri), intval($existing_message["id"]));
997
998                                                 // try to change all items of the same parent
999                                                 $r = q("UPDATE `item` SET `parent` = %d, `parent-uri` = '%s' WHERE `parent` = %d",
1000                                                         intval($parent["id"]), dbesc($parent["uri"]), intval($existing_message["parent"]));
1001
1002                                                 // Update the parent uri in the thread - but only if it points to itself
1003                                                 $r = q("UPDATE `item` SET `thr-parent` = '%s' WHERE (`parent` = %d) AND (`uri` = `thr-parent`)",
1004                                                         dbesc($parent["uri"]), intval($existing_message["parent"]));
1005
1006                                                 // Now delete the thread
1007                                                 delete_thread($existing_message["parent"]);
1008                                         }
1009                                 }
1010
1011                                 // The item we are having on the system is the one that we wanted to store via the item array
1012                                 if (isset($item["uri"]) AND ($item["uri"] == $existing_message["uri"])) {
1013                                         $item = array();
1014                                         $item_stored = 0;
1015                                 }
1016
1017                                 continue;
1018                         }
1019
1020                         if (is_array($single_conv->to))
1021                                 foreach($single_conv->to AS $to)
1022                                         if ($importer["nurl"] == normalise_link($to->id))
1023                                                 $mention = true;
1024
1025                         $actor = $single_conv->actor->id;
1026                         if (isset($single_conv->actor->url))
1027                                 $actor = $single_conv->actor->url;
1028
1029                         $details = self::get_actor_details($actor, $uid, $parent["contact-id"]);
1030
1031                         // Do we only want to import threads that were started by our contacts?
1032                         if ($details["not_following"] AND $new_parent AND get_config('system','ostatus_full_threads')) {
1033                                 logger("Don't import uri ".$first_id." because user ".$uid." doesn't follow the person ".$actor, LOGGER_DEBUG);
1034                                 continue;
1035                         }
1036
1037                         $arr = array();
1038                         $arr["network"] = $details["network"];
1039                         $arr["uri"] = $single_conv->id;
1040                         $arr["plink"] = $plink;
1041                         $arr["uid"] = $uid;
1042                         $arr["contact-id"] = $details["contact_id"];
1043                         $arr["parent-uri"] = $parent_uri;
1044                         $arr["created"] = $single_conv->published;
1045                         $arr["edited"] = $single_conv->published;
1046                         $arr["owner-name"] = $single_conv->actor->displayName;
1047                         if ($arr["owner-name"] == '')
1048                                 $arr["owner-name"] = $single_conv->actor->contact->displayName;
1049                         if ($arr["owner-name"] == '')
1050                                 $arr["owner-name"] = $single_conv->actor->portablecontacts_net->displayName;
1051
1052                         $arr["owner-link"] = $actor;
1053                         $arr["owner-avatar"] = $single_conv->actor->image->url;
1054                         $arr["author-name"] = $arr["owner-name"];
1055                         $arr["author-link"] = $actor;
1056                         $arr["author-avatar"] = $single_conv->actor->image->url;
1057                         $arr["body"] = add_page_info_to_body(html2bbcode($single_conv->content));
1058
1059                         if (isset($single_conv->status_net->notice_info->source))
1060                                 $arr["app"] = strip_tags($single_conv->status_net->notice_info->source);
1061                         elseif (isset($single_conv->statusnet->notice_info->source))
1062                                 $arr["app"] = strip_tags($single_conv->statusnet->notice_info->source);
1063                         elseif (isset($single_conv->statusnet_notice_info->source))
1064                                 $arr["app"] = strip_tags($single_conv->statusnet_notice_info->source);
1065                         elseif (isset($single_conv->provider->displayName))
1066                                 $arr["app"] = $single_conv->provider->displayName;
1067                         else
1068                                 $arr["app"] = "OStatus";
1069
1070
1071                         $arr["object"] = json_encode($single_conv);
1072                         $arr["verb"] = $parent["verb"];
1073                         $arr["visible"] = $parent["visible"];
1074                         $arr["location"] = $single_conv->location->displayName;
1075                         $arr["coord"] = trim($single_conv->location->lat." ".$single_conv->location->lon);
1076
1077                         // Is it a reshared item?
1078                         if (isset($single_conv->verb) AND ($single_conv->verb == "share") AND isset($single_conv->object)) {
1079                                 if (is_array($single_conv->object))
1080                                         $single_conv->object = $single_conv->object[0];
1081
1082                                 logger("Found reshared item ".$single_conv->object->id);
1083
1084                                 // $single_conv->object->context->conversation;
1085
1086                                 if (isset($single_conv->object->object->id))
1087                                         $arr["uri"] = $single_conv->object->object->id;
1088                                 else
1089                                         $arr["uri"] = $single_conv->object->id;
1090
1091                                 if (isset($single_conv->object->object->url))
1092                                         $plink = self::convert_href($single_conv->object->object->url);
1093                                 else
1094                                         $plink = self::convert_href($single_conv->object->url);
1095
1096                                 if (isset($single_conv->object->object->content))
1097                                         $arr["body"] = add_page_info_to_body(html2bbcode($single_conv->object->object->content));
1098                                 else
1099                                         $arr["body"] = add_page_info_to_body(html2bbcode($single_conv->object->content));
1100
1101                                 $arr["plink"] = $plink;
1102
1103                                 $arr["created"] = $single_conv->object->published;
1104                                 $arr["edited"] = $single_conv->object->published;
1105
1106                                 $arr["author-name"] = $single_conv->object->actor->displayName;
1107                                 if ($arr["owner-name"] == '')
1108                                         $arr["author-name"] = $single_conv->object->actor->contact->displayName;
1109
1110                                 $arr["author-link"] = $single_conv->object->actor->url;
1111                                 $arr["author-avatar"] = $single_conv->object->actor->image->url;
1112
1113                                 $arr["app"] = $single_conv->object->provider->displayName."#";
1114                                 //$arr["verb"] = $single_conv->object->verb;
1115
1116                                 $arr["location"] = $single_conv->object->location->displayName;
1117                                 $arr["coord"] = trim($single_conv->object->location->lat." ".$single_conv->object->location->lon);
1118                         }
1119
1120                         if ($arr["location"] == "")
1121                                 unset($arr["location"]);
1122
1123                         if ($arr["coord"] == "")
1124                                 unset($arr["coord"]);
1125
1126                         // Copy fields from given item array
1127                         if (isset($item["uri"]) AND (($item["uri"] == $arr["uri"]) OR ($item["uri"] ==  $single_conv->id))) {
1128                                 $copy_fields = array("owner-name", "owner-link", "owner-avatar", "author-name", "author-link", "author-avatar",
1129                                                         "gravity", "body", "object-type", "object", "verb", "created", "edited", "coord", "tag",
1130                                                         "title", "attach", "app", "type", "location", "contact-id", "uri");
1131                                 foreach ($copy_fields AS $field)
1132                                         if (isset($item[$field]))
1133                                                 $arr[$field] = $item[$field];
1134
1135                         }
1136
1137                         $newitem = item_store($arr);
1138                         if (!$newitem) {
1139                                 logger("Item wasn't stored ".print_r($arr, true), LOGGER_DEBUG);
1140                                 continue;
1141                         }
1142
1143                         if (isset($item["uri"]) AND ($item["uri"] == $arr["uri"])) {
1144                                 $item = array();
1145                                 $item_stored = $newitem;
1146                         }
1147
1148                         logger('Stored new item '.$plink.' for parent '.$arr["parent-uri"].' under id '.$newitem, LOGGER_DEBUG);
1149
1150                         // Add the conversation entry (but don't fetch the whole conversation)
1151                         self::store_conversation($newitem, $conversation_url);
1152
1153                         // If the newly created item is the top item then change the parent settings of the thread
1154                         // This shouldn't happen anymore. This is supposed to be absolote.
1155                         if ($arr["uri"] == $first_id) {
1156                                 logger('setting new parent to id '.$newitem);
1157                                 $new_parents = q("SELECT `id`, `uri`, `contact-id`, `type`, `verb`, `visible` FROM `item` WHERE `uid` = %d AND `id` = %d LIMIT 1",
1158                                         intval($uid), intval($newitem));
1159                                 if ($new_parents)
1160                                         $parent = $new_parents[0];
1161                         }
1162                 }
1163
1164                 if (($item_stored < 0) AND (count($item) > 0)) {
1165
1166                         if (get_config('system','ostatus_full_threads')) {
1167                                 $details = self::get_actor_details($item["owner-link"], $uid, $item["contact-id"]);
1168                                 if ($details["not_following"]) {
1169                                         logger("Don't import uri ".$item["uri"]." because user ".$uid." doesn't follow the person ".$item["owner-link"], LOGGER_DEBUG);
1170                                         return false;
1171                                 }
1172                         }
1173
1174                         $item_stored = item_store($item, true);
1175                         if ($item_stored) {
1176                                 logger("Uri ".$item["uri"]." wasn't found in conversation ".$conversation_url, LOGGER_DEBUG);
1177                                 self::store_conversation($item_stored, $conversation_url);
1178                         }
1179                 }
1180
1181                 return($item_stored);
1182         }
1183
1184         /**
1185          * @brief Stores conversation data into the database
1186          *
1187          * @param integer $itemid The id of the item
1188          * @param string $conversation_url The uri of the conversation
1189          */
1190         private function store_conversation($itemid, $conversation_url) {
1191
1192                 $conversation_url = self::convert_href($conversation_url);
1193
1194                 $messages = q("SELECT `uid`, `parent`, `created`, `received`, `guid` FROM `item` WHERE `id` = %d LIMIT 1", intval($itemid));
1195                 if (!$messages)
1196                         return;
1197                 $message = $messages[0];
1198
1199                 // Store conversation url if not done before
1200                 $conversation = q("SELECT `url` FROM `term` WHERE `uid` = %d AND `oid` = %d AND `otype` = %d AND `type` = %d",
1201                         intval($message["uid"]), intval($itemid), intval(TERM_OBJ_POST), intval(TERM_CONVERSATION));
1202
1203                 if (!$conversation) {
1204                         $r = q("INSERT INTO `term` (`uid`, `oid`, `otype`, `type`, `term`, `url`, `created`, `received`, `guid`) VALUES (%d, %d, %d, %d, '%s', '%s', '%s', '%s', '%s')",
1205                                 intval($message["uid"]), intval($itemid), intval(TERM_OBJ_POST), intval(TERM_CONVERSATION),
1206                                 dbesc($message["created"]), dbesc($conversation_url), dbesc($message["created"]), dbesc($message["received"]), dbesc($message["guid"]));
1207                         logger('Storing conversation url '.$conversation_url.' for id '.$itemid);
1208                 }
1209         }
1210
1211         /**
1212          * @brief Checks if the current post is a reshare
1213          *
1214          * @param array $item The item array of thw post
1215          *
1216          * @return string The guid if the post is a reshare
1217          */
1218         private function get_reshared_guid($item) {
1219                 $body = trim($item["body"]);
1220
1221                 // Skip if it isn't a pure repeated messages
1222                 // Does it start with a share?
1223                 if (strpos($body, "[share") > 0)
1224                         return("");
1225
1226                 // Does it end with a share?
1227                 if (strlen($body) > (strrpos($body, "[/share]") + 8))
1228                         return("");
1229
1230                 $attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism","$1",$body);
1231                 // Skip if there is no shared message in there
1232                 if ($body == $attributes)
1233                         return(false);
1234
1235                 $guid = "";
1236                 preg_match("/guid='(.*?)'/ism", $attributes, $matches);
1237                 if ($matches[1] != "")
1238                         $guid = $matches[1];
1239
1240                 preg_match('/guid="(.*?)"/ism', $attributes, $matches);
1241                 if ($matches[1] != "")
1242                         $guid = $matches[1];
1243
1244                 return $guid;
1245         }
1246
1247         /**
1248          * @brief Cleans the body of a post if it contains picture links
1249          *
1250          * @param string $body The body
1251          *
1252          * @return string The cleaned body
1253          */
1254         private function format_picture_post($body) {
1255                 $siteinfo = get_attached_data($body);
1256
1257                 if (($siteinfo["type"] == "photo")) {
1258                         if (isset($siteinfo["preview"]))
1259                                 $preview = $siteinfo["preview"];
1260                         else
1261                                 $preview = $siteinfo["image"];
1262
1263                         // Is it a remote picture? Then make a smaller preview here
1264                         $preview = proxy_url($preview, false, PROXY_SIZE_SMALL);
1265
1266                         // Is it a local picture? Then make it smaller here
1267                         $preview = str_replace(array("-0.jpg", "-0.png"), array("-2.jpg", "-2.png"), $preview);
1268                         $preview = str_replace(array("-1.jpg", "-1.png"), array("-2.jpg", "-2.png"), $preview);
1269
1270                         if (isset($siteinfo["url"]))
1271                                 $url = $siteinfo["url"];
1272                         else
1273                                 $url = $siteinfo["image"];
1274
1275                         $body = trim($siteinfo["text"])." [url]".$url."[/url]\n[img]".$preview."[/img]";
1276                 }
1277
1278                 return $body;
1279         }
1280
1281         /**
1282          * @brief Adds the header elements to the XML document
1283          *
1284          * @param object $doc XML document
1285          * @param array $owner Contact data of the poster
1286          *
1287          * @return object header root element
1288          */
1289         private function add_header($doc, $owner) {
1290
1291                 $a = get_app();
1292
1293                 $root = $doc->createElementNS(NAMESPACE_ATOM1, 'feed');
1294                 $doc->appendChild($root);
1295
1296                 $root->setAttribute("xmlns:thr", NAMESPACE_THREAD);
1297                 $root->setAttribute("xmlns:georss", NAMESPACE_GEORSS);
1298                 $root->setAttribute("xmlns:activity", NAMESPACE_ACTIVITY);
1299                 $root->setAttribute("xmlns:media", NAMESPACE_MEDIA);
1300                 $root->setAttribute("xmlns:poco", NAMESPACE_POCO);
1301                 $root->setAttribute("xmlns:ostatus", NAMESPACE_OSTATUS);
1302                 $root->setAttribute("xmlns:statusnet", NAMESPACE_STATUSNET);
1303
1304                 $attributes = array("uri" => "https://friendi.ca", "version" => FRIENDICA_VERSION."-".DB_UPDATE_VERSION);
1305                 xml::add_element($doc, $root, "generator", FRIENDICA_PLATFORM, $attributes);
1306                 xml::add_element($doc, $root, "id", App::get_baseurl()."/profile/".$owner["nick"]);
1307                 xml::add_element($doc, $root, "title", sprintf("%s timeline", $owner["name"]));
1308                 xml::add_element($doc, $root, "subtitle", sprintf("Updates from %s on %s", $owner["name"], $a->config["sitename"]));
1309                 xml::add_element($doc, $root, "logo", $owner["photo"]);
1310                 xml::add_element($doc, $root, "updated", datetime_convert("UTC", "UTC", "now", ATOM_TIME));
1311
1312                 $author = self::add_author($doc, $owner);
1313                 $root->appendChild($author);
1314
1315                 $attributes = array("href" => $owner["url"], "rel" => "alternate", "type" => "text/html");
1316                 xml::add_element($doc, $root, "link", "", $attributes);
1317
1318                 /// @TODO We have to find out what this is
1319                 /// $attributes = array("href" => App::get_baseurl()."/sup",
1320                 ///             "rel" => "http://api.friendfeed.com/2008/03#sup",
1321                 ///             "type" => "application/json");
1322                 /// xml::add_element($doc, $root, "link", "", $attributes);
1323
1324                 self::hublinks($doc, $root);
1325
1326                 $attributes = array("href" => App::get_baseurl()."/salmon/".$owner["nick"], "rel" => "salmon");
1327                 xml::add_element($doc, $root, "link", "", $attributes);
1328
1329                 $attributes = array("href" => App::get_baseurl()."/salmon/".$owner["nick"], "rel" => "http://salmon-protocol.org/ns/salmon-replies");
1330                 xml::add_element($doc, $root, "link", "", $attributes);
1331
1332                 $attributes = array("href" => App::get_baseurl()."/salmon/".$owner["nick"], "rel" => "http://salmon-protocol.org/ns/salmon-mention");
1333                 xml::add_element($doc, $root, "link", "", $attributes);
1334
1335                 $attributes = array("href" => App::get_baseurl()."/api/statuses/user_timeline/".$owner["nick"].".atom",
1336                                 "rel" => "self", "type" => "application/atom+xml");
1337                 xml::add_element($doc, $root, "link", "", $attributes);
1338
1339                 return $root;
1340         }
1341
1342         /**
1343          * @brief Add the link to the push hubs to the XML document
1344          *
1345          * @param object $doc XML document
1346          * @param object $root XML root element where the hub links are added
1347          */
1348         public static function hublinks($doc, $root) {
1349                 $hub = get_config('system','huburl');
1350
1351                 $hubxml = '';
1352                 if(strlen($hub)) {
1353                         $hubs = explode(',', $hub);
1354                         if(count($hubs)) {
1355                                 foreach($hubs as $h) {
1356                                         $h = trim($h);
1357                                         if(! strlen($h))
1358                                                 continue;
1359                                         if ($h === '[internal]')
1360                                                 $h = App::get_baseurl() . '/pubsubhubbub';
1361                                         xml::add_element($doc, $root, "link", "", array("href" => $h, "rel" => "hub"));
1362                                 }
1363                         }
1364                 }
1365         }
1366
1367         /**
1368          * @brief Adds attachement data to the XML document
1369          *
1370          * @param object $doc XML document
1371          * @param object $root XML root element where the hub links are added
1372          * @param array $item Data of the item that is to be posted
1373          */
1374         private function get_attachment($doc, $root, $item) {
1375                 $o = "";
1376                 $siteinfo = get_attached_data($item["body"]);
1377
1378                 switch($siteinfo["type"]) {
1379                         case 'link':
1380                                 $attributes = array("rel" => "enclosure",
1381                                                 "href" => $siteinfo["url"],
1382                                                 "type" => "text/html; charset=UTF-8",
1383                                                 "length" => "",
1384                                                 "title" => $siteinfo["title"]);
1385                                 xml::add_element($doc, $root, "link", "", $attributes);
1386                                 break;
1387                         case 'photo':
1388                                 $imgdata = get_photo_info($siteinfo["image"]);
1389                                 $attributes = array("rel" => "enclosure",
1390                                                 "href" => $siteinfo["image"],
1391                                                 "type" => $imgdata["mime"],
1392                                                 "length" => intval($imgdata["size"]));
1393                                 xml::add_element($doc, $root, "link", "", $attributes);
1394                                 break;
1395                         case 'video':
1396                                 $attributes = array("rel" => "enclosure",
1397                                                 "href" => $siteinfo["url"],
1398                                                 "type" => "text/html; charset=UTF-8",
1399                                                 "length" => "",
1400                                                 "title" => $siteinfo["title"]);
1401                                 xml::add_element($doc, $root, "link", "", $attributes);
1402                                 break;
1403                         default:
1404                                 break;
1405                 }
1406
1407                 if (($siteinfo["type"] != "photo") AND isset($siteinfo["image"])) {
1408                         $photodata = get_photo_info($siteinfo["image"]);
1409
1410                         $attributes = array("rel" => "preview", "href" => $siteinfo["image"], "media:width" => $photodata[0], "media:height" => $photodata[1]);
1411                         xml::add_element($doc, $root, "link", "", $attributes);
1412                 }
1413
1414
1415                 $arr = explode('[/attach],',$item['attach']);
1416                 if(count($arr)) {
1417                         foreach($arr as $r) {
1418                                 $matches = false;
1419                                 $cnt = preg_match('|\[attach\]href=\"(.*?)\" length=\"(.*?)\" type=\"(.*?)\" title=\"(.*?)\"|',$r,$matches);
1420                                 if($cnt) {
1421                                         $attributes = array("rel" => "enclosure",
1422                                                         "href" => $matches[1],
1423                                                         "type" => $matches[3]);
1424
1425                                         if(intval($matches[2]))
1426                                                 $attributes["length"] = intval($matches[2]);
1427
1428                                         if(trim($matches[4]) != "")
1429                                                 $attributes["title"] = trim($matches[4]);
1430
1431                                         xml::add_element($doc, $root, "link", "", $attributes);
1432                                 }
1433                         }
1434                 }
1435         }
1436
1437         /**
1438          * @brief Adds the author element to the XML document
1439          *
1440          * @param object $doc XML document
1441          * @param array $owner Contact data of the poster
1442          *
1443          * @return object author element
1444          */
1445         private function add_author($doc, $owner) {
1446
1447                 $r = q("SELECT `homepage` FROM `profile` WHERE `uid` = %d AND `is-default` LIMIT 1", intval($owner["uid"]));
1448                 if ($r)
1449                         $profile = $r[0];
1450
1451                 $author = $doc->createElement("author");
1452                 xml::add_element($doc, $author, "activity:object-type", ACTIVITY_OBJ_PERSON);
1453                 xml::add_element($doc, $author, "uri", $owner["url"]);
1454                 xml::add_element($doc, $author, "name", $owner["name"]);
1455                 xml::add_element($doc, $author, "summary", bbcode($owner["about"], false, false, 7));
1456
1457                 $attributes = array("rel" => "alternate", "type" => "text/html", "href" => $owner["url"]);
1458                 xml::add_element($doc, $author, "link", "", $attributes);
1459
1460                 $attributes = array(
1461                                 "rel" => "avatar",
1462                                 "type" => "image/jpeg", // To-Do?
1463                                 "media:width" => 175,
1464                                 "media:height" => 175,
1465                                 "href" => $owner["photo"]);
1466                 xml::add_element($doc, $author, "link", "", $attributes);
1467
1468                 if (isset($owner["thumb"])) {
1469                         $attributes = array(
1470                                         "rel" => "avatar",
1471                                         "type" => "image/jpeg", // To-Do?
1472                                         "media:width" => 80,
1473                                         "media:height" => 80,
1474                                         "href" => $owner["thumb"]);
1475                         xml::add_element($doc, $author, "link", "", $attributes);
1476                 }
1477
1478                 xml::add_element($doc, $author, "poco:preferredUsername", $owner["nick"]);
1479                 xml::add_element($doc, $author, "poco:displayName", $owner["name"]);
1480                 xml::add_element($doc, $author, "poco:note", bbcode($owner["about"], false, false, 7));
1481
1482                 if (trim($owner["location"]) != "") {
1483                         $element = $doc->createElement("poco:address");
1484                         xml::add_element($doc, $element, "poco:formatted", $owner["location"]);
1485                         $author->appendChild($element);
1486                 }
1487
1488                 if (trim($profile["homepage"]) != "") {
1489                         $urls = $doc->createElement("poco:urls");
1490                         xml::add_element($doc, $urls, "poco:type", "homepage");
1491                         xml::add_element($doc, $urls, "poco:value", $profile["homepage"]);
1492                         xml::add_element($doc, $urls, "poco:primary", "true");
1493                         $author->appendChild($urls);
1494                 }
1495
1496                 if (count($profile)) {
1497                         xml::add_element($doc, $author, "followers", "", array("url" => App::get_baseurl()."/viewcontacts/".$owner["nick"]));
1498                         xml::add_element($doc, $author, "statusnet:profile_info", "", array("local_id" => $owner["uid"]));
1499                 }
1500
1501                 return $author;
1502         }
1503
1504         /**
1505          * @TODO Picture attachments should look like this:
1506          *      <a href="https://status.pirati.ca/attachment/572819" title="https://status.pirati.ca/file/heluecht-20151202T222602-rd3u49p.gif"
1507          *      class="attachment thumbnail" id="attachment-572819" rel="nofollow external">https://status.pirati.ca/attachment/572819</a>
1508          *
1509         */
1510
1511         /**
1512          * @brief Returns the given activity if present - otherwise returns the "post" activity
1513          *
1514          * @param array $item Data of the item that is to be posted
1515          *
1516          * @return string activity
1517          */
1518         function construct_verb($item) {
1519                 if ($item['verb'])
1520                         return $item['verb'];
1521                 return ACTIVITY_POST;
1522         }
1523
1524         /**
1525          * @brief Returns the given object type if present - otherwise returns the "note" object type
1526          *
1527          * @param array $item Data of the item that is to be posted
1528          *
1529          * @return string Object type
1530          */
1531         function construct_objecttype($item) {
1532                 if (in_array($item['object-type'], array(ACTIVITY_OBJ_NOTE, ACTIVITY_OBJ_COMMENT)))
1533                         return $item['object-type'];
1534                 return ACTIVITY_OBJ_NOTE;
1535         }
1536
1537         /**
1538          * @brief Adds an entry element to the XML document
1539          *
1540          * @param object $doc XML document
1541          * @param array $item Data of the item that is to be posted
1542          * @param array $owner Contact data of the poster
1543          * @param bool $toplevel
1544          *
1545          * @return object Entry element
1546          */
1547         private function entry($doc, $item, $owner, $toplevel = false) {
1548                 $repeated_guid = self::get_reshared_guid($item);
1549                 if ($repeated_guid != "")
1550                         $xml = self::reshare_entry($doc, $item, $owner, $repeated_guid, $toplevel);
1551
1552                 if ($xml)
1553                         return $xml;
1554
1555                 if ($item["verb"] == ACTIVITY_LIKE)
1556                         return self::like_entry($doc, $item, $owner, $toplevel);
1557                 else
1558                         return self::note_entry($doc, $item, $owner, $toplevel);
1559         }
1560
1561         /**
1562          * @brief Adds a source entry to the XML document
1563          *
1564          * @param object $doc XML document
1565          * @param array $contact Array of the contact that is added
1566          *
1567          * @return object Source element
1568          */
1569         private function source_entry($doc, $contact) {
1570                 $source = $doc->createElement("source");
1571                 xml::add_element($doc, $source, "id", $contact["poll"]);
1572                 xml::add_element($doc, $source, "title", $contact["name"]);
1573                 xml::add_element($doc, $source, "link", "", array("rel" => "alternate",
1574                                                                 "type" => "text/html",
1575                                                                 "href" => $contact["alias"]));
1576                 xml::add_element($doc, $source, "link", "", array("rel" => "self",
1577                                                                 "type" => "application/atom+xml",
1578                                                                 "href" => $contact["poll"]));
1579                 xml::add_element($doc, $source, "icon", $contact["photo"]);
1580                 xml::add_element($doc, $source, "updated", datetime_convert("UTC","UTC",$contact["success_update"]."+00:00",ATOM_TIME));
1581
1582                 return $source;
1583         }
1584
1585         /**
1586          * @brief Fetches contact data from the contact or the gcontact table
1587          *
1588          * @param string $url URL of the contact
1589          * @param array $owner Contact data of the poster
1590          *
1591          * @return array Contact array
1592          */
1593         private function contact_entry($url, $owner) {
1594
1595                 $r = q("SELECT * FROM `contact` WHERE `nurl` = '%s' AND `uid` IN (0, %d) ORDER BY `uid` DESC LIMIT 1",
1596                         dbesc(normalise_link($url)), intval($owner["uid"]));
1597                 if ($r) {
1598                         $contact = $r[0];
1599                         $contact["uid"] = -1;
1600                 }
1601
1602                 if (!$r) {
1603                         $r = q("SELECT * FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
1604                                 dbesc(normalise_link($url)));
1605                         if ($r) {
1606                                 $contact = $r[0];
1607                                 $contact["uid"] = -1;
1608                                 $contact["success_update"] = $contact["updated"];
1609                         }
1610                 }
1611
1612                 if (!$r)
1613                         $contact = owner;
1614
1615                 if (!isset($contact["poll"])) {
1616                         $data = probe_url($url);
1617                         $contact["poll"] = $data["poll"];
1618
1619                         if (!$contact["alias"])
1620                                 $contact["alias"] = $data["alias"];
1621                 }
1622
1623                 if (!isset($contact["alias"]))
1624                         $contact["alias"] = $contact["url"];
1625
1626                 return $contact;
1627         }
1628
1629         /**
1630          * @brief Adds an entry element with reshared content
1631          *
1632          * @param object $doc XML document
1633          * @param array $item Data of the item that is to be posted
1634          * @param array $owner Contact data of the poster
1635          * @param $repeated_guid
1636          * @param bool $toplevel Is it for en entry element (false) or a feed entry (true)?
1637          *
1638          * @return object Entry element
1639          */
1640         private function reshare_entry($doc, $item, $owner, $repeated_guid, $toplevel) {
1641
1642                 if (($item["id"] != $item["parent"]) AND (normalise_link($item["author-link"]) != normalise_link($owner["url"]))) {
1643                         logger("OStatus entry is from author ".$owner["url"]." - not from ".$item["author-link"].". Quitting.", LOGGER_DEBUG);
1644                 }
1645
1646                 $title = self::entry_header($doc, $entry, $owner, $toplevel);
1647
1648                 $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' AND NOT `private` AND `network` IN ('%s', '%s', '%s') LIMIT 1",
1649                         intval($owner["uid"]), dbesc($repeated_guid),
1650                         dbesc(NETWORK_DFRN), dbesc(NETWORK_DIASPORA), dbesc(NETWORK_OSTATUS));
1651                 if ($r)
1652                         $repeated_item = $r[0];
1653                 else
1654                         return false;
1655
1656                 $contact = self::contact_entry($repeated_item['author-link'], $owner);
1657
1658                 $parent_item = (($item['thr-parent']) ? $item['thr-parent'] : $item['parent-uri']);
1659
1660                 $title = $owner["nick"]." repeated a notice by ".$contact["nick"];
1661
1662                 self::entry_content($doc, $entry, $item, $owner, $title, ACTIVITY_SHARE, false);
1663
1664                 $as_object = $doc->createElement("activity:object");
1665
1666                 xml::add_element($doc, $as_object, "activity:object-type", NAMESPACE_ACTIVITY_SCHEMA."activity");
1667
1668                 self::entry_content($doc, $as_object, $repeated_item, $owner, "", "", false);
1669
1670                 $author = self::add_author($doc, $contact);
1671                 $as_object->appendChild($author);
1672
1673                 $as_object2 = $doc->createElement("activity:object");
1674
1675                 xml::add_element($doc, $as_object2, "activity:object-type", self::construct_objecttype($repeated_item));
1676
1677                 $title = sprintf("New comment by %s", $contact["nick"]);
1678
1679                 self::entry_content($doc, $as_object2, $repeated_item, $owner, $title);
1680
1681                 $as_object->appendChild($as_object2);
1682
1683                 self::entry_footer($doc, $as_object, $item, $owner, false);
1684
1685                 $source = self::source_entry($doc, $contact);
1686
1687                 $as_object->appendChild($source);
1688
1689                 $entry->appendChild($as_object);
1690
1691                 self::entry_footer($doc, $entry, $item, $owner);
1692
1693                 return $entry;
1694         }
1695
1696         /**
1697          * @brief Adds an entry element with a "like"
1698          *
1699          * @param object $doc XML document
1700          * @param array $item Data of the item that is to be posted
1701          * @param array $owner Contact data of the poster
1702          * @param bool $toplevel Is it for en entry element (false) or a feed entry (true)?
1703          *
1704          * @return object Entry element with "like"
1705          */
1706         private function like_entry($doc, $item, $owner, $toplevel) {
1707
1708                 if (($item["id"] != $item["parent"]) AND (normalise_link($item["author-link"]) != normalise_link($owner["url"]))) {
1709                         logger("OStatus entry is from author ".$owner["url"]." - not from ".$item["author-link"].". Quitting.", LOGGER_DEBUG);
1710                 }
1711
1712                 $title = self::entry_header($doc, $entry, $owner, $toplevel);
1713
1714                 $verb = NAMESPACE_ACTIVITY_SCHEMA."favorite";
1715                 self::entry_content($doc, $entry, $item, $owner, "Favorite", $verb, false);
1716
1717                 $as_object = $doc->createElement("activity:object");
1718
1719                 $parent = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d",
1720                         dbesc($item["thr-parent"]), intval($item["uid"]));
1721                 $parent_item = (($item['thr-parent']) ? $item['thr-parent'] : $item['parent-uri']);
1722
1723                 xml::add_element($doc, $as_object, "activity:object-type", self::construct_objecttype($parent[0]));
1724
1725                 self::entry_content($doc, $as_object, $parent[0], $owner, "New entry");
1726
1727                 $entry->appendChild($as_object);
1728
1729                 self::entry_footer($doc, $entry, $item, $owner);
1730
1731                 return $entry;
1732         }
1733
1734         /**
1735          * @brief Adds a regular entry element
1736          *
1737          * @param object $doc XML document
1738          * @param array $item Data of the item that is to be posted
1739          * @param array $owner Contact data of the poster
1740          * @param bool $toplevel Is it for en entry element (false) or a feed entry (true)?
1741          *
1742          * @return object Entry element
1743          */
1744         private function note_entry($doc, $item, $owner, $toplevel) {
1745
1746                 if (($item["id"] != $item["parent"]) AND (normalise_link($item["author-link"]) != normalise_link($owner["url"]))) {
1747                         logger("OStatus entry is from author ".$owner["url"]." - not from ".$item["author-link"].". Quitting.", LOGGER_DEBUG);
1748                 }
1749
1750                 $title = self::entry_header($doc, $entry, $owner, $toplevel);
1751
1752                 xml::add_element($doc, $entry, "activity:object-type", ACTIVITY_OBJ_NOTE);
1753
1754                 self::entry_content($doc, $entry, $item, $owner, $title);
1755
1756                 self::entry_footer($doc, $entry, $item, $owner);
1757
1758                 return $entry;
1759         }
1760
1761         /**
1762          * @brief Adds a header element to the XML document
1763          *
1764          * @param object $doc XML document
1765          * @param object $entry The entry element where the elements are added
1766          * @param array $owner Contact data of the poster
1767          * @param bool $toplevel Is it for en entry element (false) or a feed entry (true)?
1768          *
1769          * @return string The title for the element
1770          */
1771         private function entry_header($doc, &$entry, $owner, $toplevel) {
1772                 /// @todo Check if this title stuff is really needed (I guess not)
1773                 if (!$toplevel) {
1774                         $entry = $doc->createElement("entry");
1775                         $title = sprintf("New note by %s", $owner["nick"]);
1776                 } else {
1777                         $entry = $doc->createElementNS(NAMESPACE_ATOM1, "entry");
1778
1779                         $entry->setAttribute("xmlns:thr", NAMESPACE_THREAD);
1780                         $entry->setAttribute("xmlns:georss", NAMESPACE_GEORSS);
1781                         $entry->setAttribute("xmlns:activity", NAMESPACE_ACTIVITY);
1782                         $entry->setAttribute("xmlns:media", NAMESPACE_MEDIA);
1783                         $entry->setAttribute("xmlns:poco", NAMESPACE_POCO);
1784                         $entry->setAttribute("xmlns:ostatus", NAMESPACE_OSTATUS);
1785                         $entry->setAttribute("xmlns:statusnet", NAMESPACE_STATUSNET);
1786
1787                         $author = self::add_author($doc, $owner);
1788                         $entry->appendChild($author);
1789
1790                         $title = sprintf("New comment by %s", $owner["nick"]);
1791                 }
1792                 return $title;
1793         }
1794
1795         /**
1796          * @brief Adds elements to the XML document
1797          *
1798          * @param object $doc XML document
1799          * @param object $entry Entry element where the content is added
1800          * @param array $item Data of the item that is to be posted
1801          * @param array $owner Contact data of the poster
1802          * @param string $title Title for the post
1803          * @param string $verb The activity verb
1804          * @param bool $complete Add the "status_net" element?
1805          */
1806         private function entry_content($doc, $entry, $item, $owner, $title, $verb = "", $complete = true) {
1807
1808                 if ($verb == "")
1809                         $verb = self::construct_verb($item);
1810
1811                 xml::add_element($doc, $entry, "id", $item["uri"]);
1812                 xml::add_element($doc, $entry, "title", $title);
1813
1814                 $body = self::format_picture_post($item['body']);
1815
1816                 if ($item['title'] != "")
1817                         $body = "[b]".$item['title']."[/b]\n\n".$body;
1818
1819                 $body = bbcode($body, false, false, 7);
1820
1821                 xml::add_element($doc, $entry, "content", $body, array("type" => "html"));
1822
1823                 xml::add_element($doc, $entry, "link", "", array("rel" => "alternate", "type" => "text/html",
1824                                                                 "href" => App::get_baseurl()."/display/".$item["guid"]));
1825
1826                 if ($complete)
1827                         xml::add_element($doc, $entry, "status_net", "", array("notice_id" => $item["id"]));
1828
1829                 xml::add_element($doc, $entry, "activity:verb", $verb);
1830
1831                 xml::add_element($doc, $entry, "published", datetime_convert("UTC","UTC",$item["created"]."+00:00",ATOM_TIME));
1832                 xml::add_element($doc, $entry, "updated", datetime_convert("UTC","UTC",$item["edited"]."+00:00",ATOM_TIME));
1833         }
1834
1835         /**
1836          * @brief Adds the elements at the foot of an entry to the XML document
1837          *
1838          * @param object $doc XML document
1839          * @param object $entry The entry element where the elements are added
1840          * @param array $item Data of the item that is to be posted
1841          * @param array $owner Contact data of the poster
1842          * @param $complete
1843          */
1844         private function entry_footer($doc, $entry, $item, $owner, $complete = true) {
1845
1846                 $mentioned = array();
1847
1848                 if (($item['parent'] != $item['id']) || ($item['parent-uri'] !== $item['uri']) || (($item['thr-parent'] !== '') && ($item['thr-parent'] !== $item['uri']))) {
1849                         $parent = q("SELECT `guid`, `author-link`, `owner-link` FROM `item` WHERE `id` = %d", intval($item["parent"]));
1850                         $parent_item = (($item['thr-parent']) ? $item['thr-parent'] : $item['parent-uri']);
1851
1852                         $attributes = array(
1853                                         "ref" => $parent_item,
1854                                         "type" => "text/html",
1855                                         "href" => App::get_baseurl()."/display/".$parent[0]["guid"]);
1856                         xml::add_element($doc, $entry, "thr:in-reply-to", "", $attributes);
1857
1858                         $attributes = array(
1859                                         "rel" => "related",
1860                                         "href" => App::get_baseurl()."/display/".$parent[0]["guid"]);
1861                         xml::add_element($doc, $entry, "link", "", $attributes);
1862
1863                         $mentioned[$parent[0]["author-link"]] = $parent[0]["author-link"];
1864                         $mentioned[$parent[0]["owner-link"]] = $parent[0]["owner-link"];
1865
1866                         $thrparent = q("SELECT `guid`, `author-link`, `owner-link` FROM `item` WHERE `uid` = %d AND `uri` = '%s'",
1867                                         intval($owner["uid"]),
1868                                         dbesc($parent_item));
1869                         if ($thrparent) {
1870                                 $mentioned[$thrparent[0]["author-link"]] = $thrparent[0]["author-link"];
1871                                 $mentioned[$thrparent[0]["owner-link"]] = $thrparent[0]["owner-link"];
1872                         }
1873                 }
1874
1875                 xml::add_element($doc, $entry, "link", "", array("rel" => "ostatus:conversation",
1876                                                         "href" => App::get_baseurl()."/display/".$owner["nick"]."/".$item["parent"]));
1877                 xml::add_element($doc, $entry, "ostatus:conversation", App::get_baseurl()."/display/".$owner["nick"]."/".$item["parent"]);
1878
1879                 $tags = item_getfeedtags($item);
1880
1881                 if(count($tags))
1882                         foreach($tags as $t)
1883                                 if ($t[0] == "@")
1884                                         $mentioned[$t[1]] = $t[1];
1885
1886                 // Make sure that mentions are accepted (GNU Social has problems with mixing HTTP and HTTPS)
1887                 $newmentions = array();
1888                 foreach ($mentioned AS $mention) {
1889                         $newmentions[str_replace("http://", "https://", $mention)] = str_replace("http://", "https://", $mention);
1890                         $newmentions[str_replace("https://", "http://", $mention)] = str_replace("https://", "http://", $mention);
1891                 }
1892                 $mentioned = $newmentions;
1893
1894                 foreach ($mentioned AS $mention) {
1895                         $r = q("SELECT `forum`, `prv` FROM `contact` WHERE `uid` = %d AND `nurl` = '%s'",
1896                                 intval($owner["uid"]),
1897                                 dbesc(normalise_link($mention)));
1898                         if ($r[0]["forum"] OR $r[0]["prv"])
1899                                 xml::add_element($doc, $entry, "link", "", array("rel" => "mentioned",
1900                                                                                         "ostatus:object-type" => ACTIVITY_OBJ_GROUP,
1901                                                                                         "href" => $mention));
1902                         else
1903                                 xml::add_element($doc, $entry, "link", "", array("rel" => "mentioned",
1904                                                                                         "ostatus:object-type" => ACTIVITY_OBJ_PERSON,
1905                                                                                         "href" => $mention));
1906                 }
1907
1908                 if (!$item["private"]) {
1909                         xml::add_element($doc, $entry, "link", "", array("rel" => "ostatus:attention",
1910                                                                         "href" => "http://activityschema.org/collection/public"));
1911                         xml::add_element($doc, $entry, "link", "", array("rel" => "mentioned",
1912                                                                         "ostatus:object-type" => "http://activitystrea.ms/schema/1.0/collection",
1913                                                                         "href" => "http://activityschema.org/collection/public"));
1914                 }
1915
1916                 if(count($tags))
1917                         foreach($tags as $t)
1918                                 if ($t[0] != "@")
1919                                         xml::add_element($doc, $entry, "category", "", array("term" => $t[2]));
1920
1921                 self::get_attachment($doc, $entry, $item);
1922
1923                 if ($complete) {
1924                         $app = $item["app"];
1925                         if ($app == "")
1926                                 $app = "web";
1927
1928                         $attributes = array("local_id" => $item["id"], "source" => $app);
1929
1930                         if (isset($parent["id"]))
1931                                 $attributes["repeat_of"] = $parent["id"];
1932
1933                         if ($item["coord"] != "")
1934                                 xml::add_element($doc, $entry, "georss:point", $item["coord"]);
1935
1936                         xml::add_element($doc, $entry, "statusnet:notice_info", "", $attributes);
1937                 }
1938         }
1939
1940         /**
1941          * @brief Creates the XML feed for a given nickname
1942          *
1943          * @param app $a The application class
1944          * @param string $owner_nick Nickname of the feed owner
1945          * @param string $last_update Date of the last update
1946          *
1947          * @return string XML feed
1948          */
1949         public static function feed(&$a, $owner_nick, $last_update) {
1950
1951                 $r = q("SELECT `contact`.*, `user`.`nickname`, `user`.`timezone`, `user`.`page-flags`
1952                                 FROM `contact` INNER JOIN `user` ON `user`.`uid` = `contact`.`uid`
1953                                 WHERE `contact`.`self` AND `user`.`nickname` = '%s' LIMIT 1",
1954                                 dbesc($owner_nick));
1955                 if (!$r)
1956                         return;
1957
1958                 $owner = $r[0];
1959
1960                 if(!strlen($last_update))
1961                         $last_update = 'now -30 days';
1962
1963                 $check_date = datetime_convert('UTC','UTC',$last_update,'Y-m-d H:i:s');
1964
1965                 $items = q("SELECT STRAIGHT_JOIN `item`.*, `item`.`id` AS `item_id` FROM `item`
1966                                 INNER JOIN `thread` ON `thread`.`iid` = `item`.`parent`
1967                                 LEFT JOIN `item` AS `thritem` ON `thritem`.`uri`=`item`.`thr-parent` AND `thritem`.`uid`=`item`.`uid`
1968                                 WHERE `item`.`uid` = %d AND `item`.`received` > '%s' AND NOT `item`.`private` AND NOT `item`.`deleted`
1969                                         AND `item`.`allow_cid` = '' AND `item`.`allow_gid` = '' AND `item`.`deny_cid`  = '' AND `item`.`deny_gid`  = ''
1970                                         AND ((`item`.`wall` AND (`item`.`parent` = `item`.`id`))
1971                                                 OR (`item`.`network` = '%s' AND ((`thread`.`network` IN ('%s', '%s')) OR (`thritem`.`network` IN ('%s', '%s')))) AND `thread`.`mention`)
1972                                         AND ((`item`.`owner-link` IN ('%s', '%s') AND (`item`.`parent` = `item`.`id`))
1973                                                 OR (`item`.`author-link` IN ('%s', '%s')))
1974                                 ORDER BY `item`.`id` DESC
1975                                 LIMIT 0, 300",
1976                                 intval($owner["uid"]), dbesc($check_date), dbesc(NETWORK_DFRN),
1977                                 //dbesc(NETWORK_OSTATUS), dbesc(NETWORK_OSTATUS),
1978                                 //dbesc(NETWORK_OSTATUS), dbesc(NETWORK_OSTATUS),
1979                                 dbesc(NETWORK_OSTATUS), dbesc(NETWORK_DFRN),
1980                                 dbesc(NETWORK_OSTATUS), dbesc(NETWORK_DFRN),
1981                                 dbesc($owner["nurl"]), dbesc(str_replace("http://", "https://", $owner["nurl"])),
1982                                 dbesc($owner["nurl"]), dbesc(str_replace("http://", "https://", $owner["nurl"]))
1983                         );
1984
1985                 $doc = new DOMDocument('1.0', 'utf-8');
1986                 $doc->formatOutput = true;
1987
1988                 $root = self::add_header($doc, $owner);
1989
1990                 foreach ($items AS $item) {
1991                         $entry = self::entry($doc, $item, $owner);
1992                         $root->appendChild($entry);
1993                 }
1994
1995                 return(trim($doc->saveXML()));
1996         }
1997
1998         /**
1999          * @brief Creates the XML for a salmon message
2000          *
2001          * @param array $item Data of the item that is to be posted
2002          * @param array $owner Contact data of the poster
2003          *
2004          * @return string XML for the salmon
2005          */
2006         public static function salmon($item,$owner) {
2007
2008                 $doc = new DOMDocument('1.0', 'utf-8');
2009                 $doc->formatOutput = true;
2010
2011                 $entry = self::entry($doc, $item, $owner, true);
2012
2013                 $doc->appendChild($entry);
2014
2015                 return(trim($doc->saveXML()));
2016         }
2017 }
2018 ?>