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         $a = get_app();
  19
  20         if (!$simulate)
  21                 logger("Import Atom/RSS feed '".$contact["name"]."' (Contact ".$contact["id"].") for user ".$importer["uid"], LOGGER_DEBUG);
  22         else
  23                 logger("Test Atom/RSS feed", LOGGER_DEBUG);
  24
  25         if ($xml == "") {
  26                 logger('XML is empty.', LOGGER_DEBUG);
  27                 return;
  28         }
  29
  30         $doc = new DOMDocument();
  31         @$doc->loadXML($xml);
  32         $xpath = new DomXPath($doc);
  33         $xpath->registerNamespace('atom', NAMESPACE_ATOM1);
  34         $xpath->registerNamespace('dc', "http://purl.org/dc/elements/1.1/");
  35         $xpath->registerNamespace('content', "http://purl.org/rss/1.0/modules/content/");
  36         $xpath->registerNamespace('rdf', "http://www.w3.org/1999/02/22-rdf-syntax-ns#");
  37         $xpath->registerNamespace('rss', "http://purl.org/rss/1.0/");
  38         $xpath->registerNamespace('media', "http://search.yahoo.com/mrss/");
  39         $xpath->registerNamespace('poco', NAMESPACE_POCO);
  40
  41         $author = array();
  42
  43         // Is it RDF?
  44         if ($xpath->query('/rdf:RDF/rss:channel')->length > 0) {
  45                 $author["author-link"] = $xpath->evaluate('/rdf:RDF/rss:channel/rss:link/text()')->item(0)->nodeValue;
  46                 $author["author-name"] = $xpath->evaluate('/rdf:RDF/rss:channel/rss:title/text()')->item(0)->nodeValue;
  47
  48                 if ($author["author-name"] == "")
  49                         $author["author-name"] = $xpath->evaluate('/rdf:RDF/rss:channel/rss:description/text()')->item(0)->nodeValue;
  50
  51                 $entries = $xpath->query('/rdf:RDF/rss:item');
  52         }
  53
  54         // Is it Atom?
  55         if ($xpath->query('/atom:feed')->length > 0) {
  56                 $alternate = $xpath->query("atom:link[@rel='alternate']")->item(0)->attributes;
  57                 if (is_object($alternate))
  58                         foreach($alternate AS $attributes)
  59                                 if ($attributes->name == "href")
  60                                         $author["author-link"] = $attributes->textContent;
  61
  62                 if ($author["author-link"] == "")
  63                         $author["author-link"] = $author["author-id"];
  64
  65                 if ($author["author-link"] == "") {
  66                         $self = $xpath->query("atom:link[@rel='self']")->item(0)->attributes;
  67                         if (is_object($self))
  68                                 foreach($self AS $attributes)
  69                                         if ($attributes->name == "href")
  70                                                 $author["author-link"] = $attributes->textContent;
  71                 }
  72
  73                 if ($author["author-link"] == "")
  74                         $author["author-link"] = $xpath->evaluate('/atom:feed/atom:id/text()')->item(0)->nodeValue;
  75
  76                 $author["author-avatar"] = $xpath->evaluate('/atom:feed/atom:logo/text()')->item(0)->nodeValue;
  77
  78                 $author["author-name"] = $xpath->evaluate('/atom:feed/atom:title/text()')->item(0)->nodeValue;
  79
  80                 if ($author["author-name"] == "")
  81                         $author["author-name"] = $xpath->evaluate('/atom:feed/atom:subtitle/text()')->item(0)->nodeValue;
  82
  83                 if ($author["author-name"] == "")
  84                         $author["author-name"] = $xpath->evaluate('/atom:feed/atom:author/atom:name/text()')->item(0)->nodeValue;
  85
  86                 $value = $xpath->evaluate('atom:author/poco:displayName/text()')->item(0)->nodeValue;
  87                 if ($value != "")
  88                         $author["author-name"] = $value;
  89
  90                 if ($simulate) {
  91                         $author["author-id"] = $xpath->evaluate('/atom:feed/atom:author/atom:uri/text()')->item(0)->nodeValue;
  92
  93                         $value = $xpath->evaluate('atom:author/poco:preferredUsername/text()')->item(0)->nodeValue;
  94                         if ($value != "")
  95                                 $author["author-nick"] = $value;
  96
  97                         $value = $xpath->evaluate('atom:author/poco:address/poco:formatted/text()', $context)->item(0)->nodeValue;
  98                         if ($value != "")
  99                                 $author["author-location"] = $value;
 100
 101                         $value = $xpath->evaluate('atom:author/poco:note/text()')->item(0)->nodeValue;
 102                         if ($value != "")
 103                                 $author["author-about"] = $value;
 104
 105                 }
 106
 107                 $author["edited"] = $author["created"] = $xpath->query('/atom:feed/atom:updated/text()')->item(0)->nodeValue;
 108
 109                 $author["app"] = $xpath->evaluate('/atom:feed/atom:generator/text()')->item(0)->nodeValue;
 110
 111                 $entries = $xpath->query('/atom:feed/atom:entry');
 112         }
 113
 114         // Is it RSS?
 115         if ($xpath->query('/rss/channel')->length > 0) {
 116                 $author["author-link"] = $xpath->evaluate('/rss/channel/link/text()')->item(0)->nodeValue;
 117
 118                 $author["author-name"] = $xpath->evaluate('/rss/channel/title/text()')->item(0)->nodeValue;
 119                 $author["author-avatar"] = $xpath->evaluate('/rss/channel/image/url/text()')->item(0)->nodeValue;
 120
 121                 if ($author["author-name"] == "")
 122                         $author["author-name"] = $xpath->evaluate('/rss/channel/copyright/text()')->item(0)->nodeValue;
 123
 124                 if ($author["author-name"] == "")
 125                         $author["author-name"] = $xpath->evaluate('/rss/channel/description/text()')->item(0)->nodeValue;
 126
 127                 $author["edited"] = $author["created"] = $xpath->query('/rss/channel/pubDate/text()')->item(0)->nodeValue;
 128
 129                 $author["app"] = $xpath->evaluate('/rss/channel/generator/text()')->item(0)->nodeValue;
 130
 131                 $entries = $xpath->query('/rss/channel/item');
 132         }
 133
 134         if (!$simulate) {
 135                 $author["author-link"] = $contact["url"];
 136
 137                 if ($author["author-name"] == "")
 138                         $author["author-name"] = $contact["name"];
 139
 140                 $author["author-avatar"] = $contact["thumb"];
 141
 142                 $author["owner-link"] = $contact["url"];
 143                 $author["owner-name"] = $contact["name"];
 144                 $author["owner-avatar"] = $contact["thumb"];
 145         }
 146
 147         $header = array();
 148         $header["uid"] = $importer["uid"];
 149         $header["network"] = NETWORK_FEED;
 150         $header["type"] = "remote";
 151         $header["wall"] = 0;
 152         $header["origin"] = 0;
 153         $header["gravity"] = GRAVITY_PARENT;
 154         $header["private"] = 2;
 155         $header["verb"] = ACTIVITY_POST;
 156         $header["object-type"] = ACTIVITY_OBJ_NOTE;
 157
 158         $header["contact-id"] = $contact["id"];
 159
 160         if(!strlen($contact["notify"])) {
 161                 // one way feed - no remote comment ability
 162                 $header["last-child"] = 0;
 163         }
 164
 165         if (!is_object($entries)) {
 166                 logger("There are no entries in this feed.", LOGGER_DEBUG);
 167                 return;
 168         }
 169
 170         $items = array();
 171
 172         $entrylist = array();
 173
 174         foreach ($entries AS $entry)
 175                 $entrylist[] = $entry;
 176
 177         foreach (array_reverse($entrylist) AS $entry) {
 178                 $item = array_merge($header, $author);
 179
 180                 if (is_object($alternate))
 181                         foreach($alternate AS $attributes)
 182                                 if ($attributes->name == "href")
 183                                         $item["plink"] = $attributes->textContent;
 184
 185                 if ($item["plink"] == "")
 186                         $item["plink"] = $xpath->evaluate('link/text()', $entry)->item(0)->nodeValue;
 187
 188                 if ($item["plink"] == "")
 189                         $item["plink"] = $xpath->evaluate('rss:link/text()', $entry)->item(0)->nodeValue;
 190
 191                 $item["plink"] = original_url($item["plink"]);
 192
 193                 $item["uri"] = $xpath->evaluate('atom:id/text()', $entry)->item(0)->nodeValue;
 194
 195                 if ($item["uri"] == "")
 196                         $item["uri"] = $xpath->evaluate('guid/text()', $entry)->item(0)->nodeValue;
 197
 198                 if ($item["uri"] == "")
 199                         $item["uri"] = $item["plink"];
 200
 201                 $item["parent-uri"] = $item["uri"];
 202
 203                 if (!$simulate) {
 204                         $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `uri` = '%s' AND `network` IN ('%s', '%s')",
 205                                 intval($importer["uid"]), dbesc($item["uri"]), dbesc(NETWORK_FEED), dbesc(NETWORK_DFRN));
 206                         if ($r) {
 207                                 logger("Item with uri ".$item["uri"]." for user ".$importer["uid"]." already existed under id ".$r[0]["id"], LOGGER_DEBUG);
 208                                 continue;
 209                         }
 210                 }
 211
 212                 $item["title"] = $xpath->evaluate('atom:title/text()', $entry)->item(0)->nodeValue;
 213
 214                 if ($item["title"] == "")
 215                         $item["title"] = $xpath->evaluate('title/text()', $entry)->item(0)->nodeValue;
 216
 217                 if ($item["title"] == "")
 218                         $item["title"] = $xpath->evaluate('rss:title/text()', $entry)->item(0)->nodeValue;
 219
 220                 $alternate = $xpath->query("atom:link[@rel='alternate']", $entry)->item(0)->attributes;
 221                 if (!is_object($alternate))
 222                         $alternate = $xpath->query("atom:link", $entry)->item(0)->attributes;
 223
 224                 $published = $xpath->query('atom:published/text()', $entry)->item(0)->nodeValue;
 225
 226                 if ($published == "")
 227                         $published = $xpath->query('pubDate/text()', $entry)->item(0)->nodeValue;
 228
 229                 if ($published == "")
 230                         $published = $xpath->query('dc:date/text()', $entry)->item(0)->nodeValue;
 231
 232                 $updated = $xpath->query('atom:updated/text()', $entry)->item(0)->nodeValue;
 233
 234                 if ($updated == "")
 235                         $updated = $published;
 236
 237                 if ($published != "")
 238                         $item["created"] = $published;
 239
 240                 if ($updated != "")
 241                         $item["edited"] = $updated;
 242
 243                 $creator = $xpath->query('author/text()', $entry)->item(0)->nodeValue;
 244
 245                 if ($creator == "")
 246                         $creator = $xpath->query('atom:author/atom:name/text()', $entry)->item(0)->nodeValue;
 247
 248                 if ($creator == "")
 249                         $creator = $xpath->query('dc:creator/text()', $entry)->item(0)->nodeValue;
 250
 251                 if ($creator != "")
 252                         $item["author-name"] = $creator;
 253
 254                 if ($pubDate != "")
 255                         $item["edited"] = $item["created"] = $pubDate;
 256
 257                 $creator = $xpath->query('dc:creator/text()', $entry)->item(0)->nodeValue;
 258
 259                 if ($creator != "")
 260                         $item["author-name"] = $creator;
 261
 262                 /// @TODO ?
 263                 // <category>Ausland</category>
 264                 // <media:thumbnail width="152" height="76" url="http://www.taz.de/picture/667875/192/14388767.jpg"/>
 265
 266                 $attachments = array();
 267
 268                 $enclosures = $xpath->query("enclosure", $entry);
 269                 foreach ($enclosures AS $enclosure) {
 270                         $href = "";
 271                         $length = "";
 272                         $type = "";
 273                         $title = "";
 274
 275                         foreach($enclosure->attributes AS $attributes) {
 276                                 if ($attributes->name == "url")
 277                                         $href = $attributes->textContent;
 278                                 elseif ($attributes->name == "length")
 279                                         $length = $attributes->textContent;
 280                                 elseif ($attributes->name == "type")
 281                                         $type = $attributes->textContent;
 282                         }
 283                         if(strlen($item["attach"]))
 284                                 $item["attach"] .= ',';
 285
 286                         $attachments[] = array("link" => $href, "type" => $type, "length" => $length);
 287
 288                         $item["attach"] .= '[attach]href="'.$href.'" length="'.$length.'" type="'.$type.'"[/attach]';
 289                 }
 290
 291                 if ($contact["fetch_further_information"]) {
 292                         $preview = "";
 293
 294                         // Handle enclosures and treat them as preview picture
 295                         foreach ($attachments AS $attachment)
 296                                 if ($attachment["type"] == "image/jpeg")
 297                                         $preview = $attachment["link"];
 298
 299                         $item["body"] = $item["title"].add_page_info($item["plink"], false, $preview, ($contact["fetch_further_information"] == 2), $contact["ffi_keyword_blacklist"]);
 300                         $item["tag"] = add_page_keywords($item["plink"], false, $preview, ($contact["fetch_further_information"] == 2), $contact["ffi_keyword_blacklist"]);
 301                         $item["title"] = "";
 302                         $item["object-type"] = ACTIVITY_OBJ_BOOKMARK;
 303                         unset($item["attach"]);
 304                 } else {
 305                         $body = trim($xpath->evaluate('atom:content/text()', $entry)->item(0)->nodeValue);
 306
 307                         if ($body == "")
 308                                 $body = trim($xpath->evaluate('content:encoded/text()', $entry)->item(0)->nodeValue);
 309
 310                         if ($body == "")
 311                                 $body = trim($xpath->evaluate('description/text()', $entry)->item(0)->nodeValue);
 312
 313                         if ($body == "")
 314                                 $body = trim($xpath->evaluate('atom:summary/text()', $entry)->item(0)->nodeValue);
 315
 316                         // remove the content of the title if it is identically to the body
 317                         // This helps with auto generated titles e.g. from tumblr
 318                         if (title_is_body($item["title"], $body))
 319                                 $item["title"] = "";
 320
 321                         $item["body"] = html2bbcode($body);
 322                 }
 323
 324                 if (!$simulate) {
 325                         logger("Stored feed: ".print_r($item, true), LOGGER_DEBUG);
 326
 327                         $notify = item_is_remote_self($contact, $item);
 328
 329                         // Distributed items should have a well formatted URI.
 330                         // Additionally we have to avoid conflicts with identical URI between imported feeds and these items.
 331                         if ($notify) {
 332                                 unset($item['uri']);
 333                                 unset($item['parent-uri']);
 334                         }
 335
 336                         $id = item_store($item, false, $notify);
 337
 338                         logger("Feed for contact ".$contact["url"]." stored under id ".$id);
 339                 } else
 340                         $items[] = $item;
 341
 342                 if ($simulate)
 343                         break;
 344         }
 345
 346         if ($simulate)
 347                 return array("header" => $author, "items" => $items);
 348 }
 349 ?>