include/feed.php

   1 <?php
   2 require_once("include/html2bbcode.php");
   3 require_once("include/items.php");
   4
   5 /**
   6  * @brief Read a RSS/RDF/Atom feed and create an item entry for it
   7  *
   8  * @param string $xml The feed data
   9  * @param array $importer The user record of the importer
  10  * @param array $contact The contact record of the feed
  11  * @param string $hub Unused dummy value for compatibility reasons
  12  * @param bool $simulate If enabled, no data is imported
  13  *
  14  * @return array In simulation mode it returns the header and the first item
  15  */
  16 function feed_import($xml,$importer,&$contact, &$hub, $simulate = false) {
  17
  18         $a = get_app();
  19
  20         logger("Import Atom/RSS feed", LOGGER_DEBUG);
  21
  22         if ($xml == "")
  23                 return;
  24
  25         $doc = new DOMDocument();
  26         @$doc->loadXML($xml);
  27         $xpath = new DomXPath($doc);
  28         $xpath->registerNamespace('atom', NAMESPACE_ATOM1);
  29         $xpath->registerNamespace('dc', "http://purl.org/dc/elements/1.1/");
  30         $xpath->registerNamespace('content', "http://purl.org/rss/1.0/modules/content/");
  31         $xpath->registerNamespace('rdf', "http://www.w3.org/1999/02/22-rdf-syntax-ns#");
  32         $xpath->registerNamespace('rss', "http://purl.org/rss/1.0/");
  33         $xpath->registerNamespace('media', "http://search.yahoo.com/mrss/");
  34         $xpath->registerNamespace('poco', NAMESPACE_POCO);
  35
  36         $author = array();
  37
  38         // Is it RDF?
  39         if ($xpath->query('/rdf:RDF/rss:channel')->length > 0) {
  40                 $author["author-link"] = $xpath->evaluate('/rdf:RDF/rss:channel/rss:link/text()')->item(0)->nodeValue;
  41                 $author["author-name"] = $xpath->evaluate('/rdf:RDF/rss:channel/rss:title/text()')->item(0)->nodeValue;
  42
  43                 if ($author["author-name"] == "")
  44                         $author["author-name"] = $xpath->evaluate('/rdf:RDF/rss:channel/rss:description/text()')->item(0)->nodeValue;
  45
  46                 $entries = $xpath->query('/rdf:RDF/rss:item');
  47         }
  48
  49         // Is it Atom?
  50         if ($xpath->query('/atom:feed/atom:entry')->length > 0) {
  51                 $alternate = $xpath->query("atom:link[@rel='alternate']")->item(0)->attributes;
  52                 if (is_object($alternate))
  53                         foreach($alternate AS $attributes)
  54                                 if ($attributes->name == "href")
  55                                         $author["author-link"] = $attributes->textContent;
  56
  57                 $author["author-id"] = $xpath->evaluate('/atom:feed/atom:author/atom:uri/text()')->item(0)->nodeValue;
  58
  59                 if ($author["author-link"] == "")
  60                         $author["author-link"] = $author["author-id"];
  61
  62                 if ($author["author-link"] == "") {
  63                         $self = $xpath->query("atom:link[@rel='self']")->item(0)->attributes;
  64                         if (is_object($self))
  65                                 foreach($self AS $attributes)
  66                                         if ($attributes->name == "href")
  67                                                 $author["author-link"] = $attributes->textContent;
  68                 }
  69
  70                 if ($author["author-link"] == "")
  71                         $author["author-link"] = $xpath->evaluate('/atom:feed/atom:id/text()')->item(0)->nodeValue;
  72
  73                 $author["author-avatar"] = $xpath->evaluate('/atom:feed/atom:logo/text()')->item(0)->nodeValue;
  74
  75                 $author["author-name"] = $xpath->evaluate('/atom:feed/atom:title/text()')->item(0)->nodeValue;
  76
  77                 if ($author["author-name"] == "")
  78                         $author["author-name"] = $xpath->evaluate('/atom:feed/atom:subtitle/text()')->item(0)->nodeValue;
  79
  80                 if ($author["author-name"] == "")
  81                         $author["author-name"] = $xpath->evaluate('/atom:feed/atom:author/atom:name/text()')->item(0)->nodeValue;
  82
  83                 $value = $xpath->evaluate('atom:author/poco:displayName/text()')->item(0)->nodeValue;
  84                 if ($value != "")
  85                         $author["author-name"] = $value;
  86
  87                 $value = $xpath->evaluate('atom:author/poco:preferredUsername/text()')->item(0)->nodeValue;
  88                 if ($value != "")
  89                         $author["author-nick"] = $value;
  90
  91                 $author["edited"] = $author["created"] = $xpath->query('/atom:feed/atom:updated/text()')->item(0)->nodeValue;
  92
  93                 $author["app"] = $xpath->evaluate('/atom:feed/atom:generator/text()')->item(0)->nodeValue;
  94
  95                 $entries = $xpath->query('/atom:feed/atom:entry');
  96         }
  97
  98         // Is it RSS?
  99         if ($xpath->query('/rss/channel')->length > 0) {
 100                 $author["author-link"] = $xpath->evaluate('/rss/channel/link/text()')->item(0)->nodeValue;
 101
 102                 $author["author-name"] = $xpath->evaluate('/rss/channel/title/text()')->item(0)->nodeValue;
 103                 $author["author-avatar"] = $xpath->evaluate('/rss/channel/image/url/text()')->item(0)->nodeValue;
 104
 105                 if ($author["author-name"] == "")
 106                         $author["author-name"] = $xpath->evaluate('/rss/channel/copyright/text()')->item(0)->nodeValue;
 107
 108                 if ($author["author-name"] == "")
 109                         $author["author-name"] = $xpath->evaluate('/rss/channel/description/text()')->item(0)->nodeValue;
 110
 111                 $author["edited"] = $author["created"] = $xpath->query('/rss/channel/pubDate/text()')->item(0)->nodeValue;
 112
 113                 $author["app"] = $xpath->evaluate('/rss/channel/generator/text()')->item(0)->nodeValue;
 114
 115                 $entries = $xpath->query('/rss/channel/item');
 116         }
 117
 118         if (!$simulate) {
 119                 $author["author-link"] = $contact["url"];
 120
 121                 if ($author["author-name"] == "")
 122                         $author["author-name"] = $contact["name"];
 123
 124                 $author["author-avatar"] = $contact["thumb"];
 125
 126                 $author["owner-link"] = $contact["url"];
 127                 $author["owner-name"] = $contact["name"];
 128                 $author["owner-avatar"] = $contact["thumb"];
 129
 130                 // This is no field in the item table. So we have to unset it.
 131                 unset($author["author-nick"]);
 132                 unset($author["author-id"]);
 133         }
 134
 135         $header = array();
 136         $header["uid"] = $importer["uid"];
 137         $header["network"] = NETWORK_FEED;
 138         $header["type"] = "remote";
 139         $header["wall"] = 0;
 140         $header["origin"] = 0;
 141         $header["gravity"] = GRAVITY_PARENT;
 142         $header["private"] = 2;
 143         $header["verb"] = ACTIVITY_POST;
 144         $header["object-type"] = ACTIVITY_OBJ_NOTE;
 145
 146         $header["contact-id"] = $contact["id"];
 147
 148         if(!strlen($contact["notify"])) {
 149                 // one way feed - no remote comment ability
 150                 $header["last-child"] = 0;
 151         }
 152
 153         if (!is_object($entries))
 154                 return;
 155
 156         $items = array();
 157
 158         $entrylist = array();
 159
 160         foreach ($entries AS $entry)
 161                 $entrylist[] = $entry;
 162
 163         foreach (array_reverse($entrylist) AS $entry) {
 164                 $item = array_merge($header, $author);
 165
 166                 $item["title"] = $xpath->evaluate('atom:title/text()', $entry)->item(0)->nodeValue;
 167
 168                 if ($item["title"] == "")
 169                         $item["title"] = $xpath->evaluate('title/text()', $entry)->item(0)->nodeValue;
 170
 171                 if ($item["title"] == "")
 172                         $item["title"] = $xpath->evaluate('rss:title/text()', $entry)->item(0)->nodeValue;
 173
 174                 $alternate = $xpath->query("atom:link[@rel='alternate']", $entry)->item(0)->attributes;
 175                 if (!is_object($alternate))
 176                         $alternate = $xpath->query("atom:link", $entry)->item(0)->attributes;
 177
 178                 if (is_object($alternate))
 179                         foreach($alternate AS $attributes)
 180                                 if ($attributes->name == "href")
 181                                         $item["plink"] = $attributes->textContent;
 182
 183                 if ($item["plink"] == "")
 184                         $item["plink"] = $xpath->evaluate('link/text()', $entry)->item(0)->nodeValue;
 185
 186                 if ($item["plink"] == "")
 187                         $item["plink"] = $xpath->evaluate('rss:link/text()', $entry)->item(0)->nodeValue;
 188
 189                 $item["plink"] = original_url($item["plink"]);
 190
 191                 $item["uri"] = $xpath->evaluate('atom:id/text()', $entry)->item(0)->nodeValue;
 192
 193                 if ($item["uri"] == "")
 194                         $item["uri"] = $xpath->evaluate('guid/text()', $entry)->item(0)->nodeValue;
 195
 196                 if ($item["uri"] == "")
 197                         $item["uri"] = $item["plink"];
 198
 199                 $item["parent-uri"] = $item["uri"];
 200
 201                 $published = $xpath->query('atom:published/text()', $entry)->item(0)->nodeValue;
 202
 203                 if ($published == "")
 204                         $published = $xpath->query('pubDate/text()', $entry)->item(0)->nodeValue;
 205
 206                 if ($published == "")
 207                         $published = $xpath->query('dc:date/text()', $entry)->item(0)->nodeValue;
 208
 209                 $updated = $xpath->query('atom:updated/text()', $entry)->item(0)->nodeValue;
 210
 211                 if ($updated == "")
 212                         $updated = $published;
 213
 214                 if ($published != "")
 215                         $item["created"] = $published;
 216
 217                 if ($updated != "")
 218                         $item["edited"] = $updated;
 219
 220                 $creator = $xpath->query('author/text()', $entry)->item(0)->nodeValue;
 221
 222                 if ($creator == "")
 223                         $creator = $xpath->query('atom:author/atom:name/text()', $entry)->item(0)->nodeValue;
 224
 225                 if ($creator == "")
 226                         $creator = $xpath->query('dc:creator/text()', $entry)->item(0)->nodeValue;
 227
 228                 if ($creator != "")
 229                         $item["author-name"] = $creator;
 230
 231                 if ($pubDate != "")
 232                         $item["edited"] = $item["created"] = $pubDate;
 233
 234                 $creator = $xpath->query('dc:creator/text()', $entry)->item(0)->nodeValue;
 235
 236                 if ($creator != "")
 237                         $item["author-name"] = $creator;
 238
 239                 if (!$simulate) {
 240                         $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `uri` = '%s' AND `network` IN ('%s', '%s')",
 241                                 intval($importer["uid"]), dbesc($item["uri"]), dbesc(NETWORK_FEED), dbesc(NETWORK_DFRN));
 242                         if ($r) {
 243                                 logger("Item with uri ".$item["uri"]." for user ".$importer["uid"]." already existed under id ".$r[0]["id"], LOGGER_DEBUG);
 244                                 continue;
 245                         }
 246                 }
 247
 248                 /// @TODO ?
 249                 // <category>Ausland</category>
 250                 // <media:thumbnail width="152" height="76" url="http://www.taz.de/picture/667875/192/14388767.jpg"/>
 251
 252                 $attachments = array();
 253
 254                 $enclosures = $xpath->query("enclosure", $entry);
 255                 foreach ($enclosures AS $enclosure) {
 256                         $href = "";
 257                         $length = "";
 258                         $type = "";
 259                         $title = "";
 260
 261                         foreach($enclosure->attributes AS $attributes) {
 262                                 if ($attributes->name == "url")
 263                                         $href = $attributes->textContent;
 264                                 elseif ($attributes->name == "length")
 265                                         $length = $attributes->textContent;
 266                                 elseif ($attributes->name == "type")
 267                                         $type = $attributes->textContent;
 268                         }
 269                         if(strlen($item["attach"]))
 270                                 $item["attach"] .= ',';
 271
 272                         $attachments[] = array("link" => $href, "type" => $type, "length" => $length);
 273
 274                         $item["attach"] .= '[attach]href="'.$href.'" length="'.$length.'" type="'.$type.'"[/attach]';
 275                 }
 276
 277                 if ($contact["fetch_further_information"]) {
 278                         $preview = "";
 279
 280                         // Handle enclosures and treat them as preview picture
 281                         foreach ($attachments AS $attachment)
 282                                 if ($attachment["type"] == "image/jpeg")
 283                                         $preview = $attachment["link"];
 284
 285                         $item["body"] = $item["title"].add_page_info($item["plink"], false, $preview, ($contact["fetch_further_information"] == 2), $contact["ffi_keyword_blacklist"]);
 286                         $item["tag"] = add_page_keywords($item["plink"], false, $preview, ($contact["fetch_further_information"] == 2), $contact["ffi_keyword_blacklist"]);
 287                         $item["title"] = "";
 288                         $item["object-type"] = ACTIVITY_OBJ_BOOKMARK;
 289                         unset($item["attach"]);
 290                 } else {
 291                         $body = trim($xpath->evaluate('atom:content/text()', $entry)->item(0)->nodeValue);
 292
 293                         if ($body == "")
 294                                 $body = trim($xpath->evaluate('content:encoded/text()', $entry)->item(0)->nodeValue);
 295
 296                         if ($body == "")
 297                                 $body = trim($xpath->evaluate('description/text()', $entry)->item(0)->nodeValue);
 298
 299                         if ($body == "")
 300                                 $body = trim($xpath->evaluate('atom:summary/text()', $entry)->item(0)->nodeValue);
 301
 302                         // remove the content of the title if it is identically to the body
 303                         // This helps with auto generated titles e.g. from tumblr
 304                         if (title_is_body($item["title"], $body))
 305                                 $item["title"] = "";
 306
 307                         $item["body"] = html2bbcode($body);
 308                 }
 309
 310                 if (!$simulate) {
 311                         logger("Stored feed: ".print_r($item, true), LOGGER_DEBUG);
 312
 313                         $notify = item_is_remote_self($contact, $item);
 314                         $id = item_store($item, false, $notify);
 315
 316                         logger("Feed for contact ".$contact["url"]." stored under id ".$id);
 317                 } else
 318                         $items[] = $item;
 319
 320                 if ($simulate)
 321                         break;
 322         }
 323
 324         if ($simulate)
 325                 return array("header" => $author, "items" => $items);
 326 }
 327 ?>