include/plaintext.php

   1 <?php
   2
   3 require_once("include/Photo.php");
   4
   5 /**
   6  * @brief Fetches attachment data that were generated the old way
   7  *
   8  * @param string $body Message body
   9  * @return array
  10  * 'type' -> Message type ("link", "video", "photo")
  11  * 'text' -> Text outside of the shared message
  12  * 'image' -> Preview image of the message
  13  * 'url' -> Url to the attached message
  14  * 'title' -> Title of the attachment
  15  * 'description' -> Description of the attachment
  16  */
  17 function get_old_attachment_data($body) {
  18
  19         $post = array();
  20
  21         // Simplify image codes
  22         $body = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $body);
  23
  24         if (preg_match_all("(\[class=(.*?)\](.*?)\[\/class\])ism",$body, $attached,  PREG_SET_ORDER)) {
  25                 foreach ($attached AS $data) {
  26                         if (!in_array($data[1], array("type-link", "type-video", "type-photo")))
  27                                 continue;
  28
  29                         $post["type"] = substr($data[1], 5);
  30
  31                         $post["text"] = trim(str_replace($data[0], "", $body));
  32
  33                         $attacheddata = $data[2];
  34
  35                         $URLSearchString = "^\[\]";
  36
  37                         if (preg_match("/\[img\]([$URLSearchString]*)\[\/img\]/ism", $attacheddata, $matches)) {
  38
  39                                 $picturedata = get_photo_info($matches[1]);
  40
  41                                 if (($picturedata[0] >= 500) AND ($picturedata[0] >= $picturedata[1]))
  42                                         $post["image"] = $matches[1];
  43                                 else
  44                                         $post["preview"] = $matches[1];
  45                         }
  46
  47                         if (preg_match("/\[bookmark\=([$URLSearchString]*)\](.*?)\[\/bookmark\]/ism", $attacheddata, $matches)) {
  48                                 $post["url"] = $matches[1];
  49                                 $post["title"] = $matches[2];
  50                         }
  51
  52                         // Search for description
  53                         if (preg_match("/\[quote\](.*?)\[\/quote\]/ism", $attacheddata, $matches))
  54                                 $post["description"] = $matches[1];
  55
  56                 }
  57         }
  58
  59         return $post;
  60 }
  61
  62 /**
  63  * @brief Fetches attachment data that were generated with the "attachment" element
  64  *
  65  * @param string $body Message body
  66  * @return array
  67  * 'type' -> Message type ("link", "video", "photo")
  68  * 'text' -> Text before the shared message
  69  * 'after' -> Text after the shared message
  70  * 'image' -> Preview image of the message
  71  * 'url' -> Url to the attached message
  72  * 'title' -> Title of the attachment
  73  * 'description' -> Description of the attachment
  74  */
  75 function get_attachment_data($body) {
  76
  77         $data = array();
  78
  79         if (!preg_match("/(.*)\[attachment(.*)\](.*?)\[\/attachment\](.*)/ism", $body, $match))
  80                 return get_old_attachment_data($body);
  81
  82         $attributes = $match[2];
  83
  84         $data["text"] = trim($match[1]);
  85
  86         $type = "";
  87         preg_match("/type='(.*?)'/ism", $attributes, $matches);
  88         if ($matches[1] != "")
  89                 $type = strtolower($matches[1]);
  90
  91         preg_match('/type="(.*?)"/ism', $attributes, $matches);
  92         if ($matches[1] != "")
  93                 $type = strtolower($matches[1]);
  94
  95         if ($type == "")
  96                 return(array());
  97
  98         if (!in_array($type, array("link", "audio", "photo", "video")))
  99                 return(array());
 100
 101         if ($type != "")
 102                 $data["type"] = $type;
 103
 104         $url = "";
 105         preg_match("/url='(.*?)'/ism", $attributes, $matches);
 106         if ($matches[1] != "")
 107                 $url = $matches[1];
 108
 109         preg_match('/url="(.*?)"/ism', $attributes, $matches);
 110         if ($matches[1] != "")
 111                 $url = $matches[1];
 112
 113         if ($url != "")
 114                 $data["url"] = $url;
 115
 116         $title = "";
 117         preg_match("/title='(.*?)'/ism", $attributes, $matches);
 118         if ($matches[1] != "")
 119                 $title = $matches[1];
 120
 121         preg_match('/title="(.*?)"/ism', $attributes, $matches);
 122         if ($matches[1] != "")
 123                 $title = $matches[1];
 124
 125         //$title = htmlentities($title, ENT_QUOTES, 'UTF-8', false);
 126         $title = bbcode(html_entity_decode($title, ENT_QUOTES, 'UTF-8'), false, false, true);
 127         $title = str_replace(array("[", "]"), array("&#91;", "&#93;"), $title);
 128
 129         if ($title != "")
 130                 $data["title"] = $title;
 131
 132         $image = "";
 133         if ($type != "video") {
 134                 preg_match("/image='(.*?)'/ism", $attributes, $matches);
 135                 if ($matches[1] != "")
 136                         $image = $matches[1];
 137
 138                 preg_match('/image="(.*?)"/ism', $attributes, $matches);
 139                 if ($matches[1] != "")
 140                         $image = $matches[1];
 141         }
 142
 143         if ($image != "")
 144                 $data["image"] = $image;
 145
 146         $preview = "";
 147         if ($type != "video") {
 148                 preg_match("/preview='(.*?)'/ism", $attributes, $matches);
 149                 if ($matches[1] != "")
 150                         $preview = $matches[1];
 151
 152                 preg_match('/preview="(.*?)"/ism', $attributes, $matches);
 153                 if ($matches[1] != "")
 154                         $preview = $matches[1];
 155         }
 156
 157         if ($preview != "")
 158                 $data["preview"] = $preview;
 159
 160         $data["description"] = trim($match[3]);
 161
 162         $data["after"] = trim($match[4]);
 163
 164         return($data);
 165 }
 166
 167 function get_attached_data($body) {
 168 /*
 169  - text:
 170  - type: link, video, photo
 171  - title:
 172  - url:
 173  - image:
 174  - description:
 175  - (thumbnail)
 176 */
 177
 178         $post = get_attachment_data($body);
 179
 180         // if nothing is found, it maybe having an image.
 181         if (!isset($post["type"])) {
 182                 require_once("mod/parse_url.php");
 183                 require_once("include/Photo.php");
 184
 185                 $URLSearchString = "^\[\]";
 186                 if (preg_match_all("(\[url=([$URLSearchString]*)\]\s*\[img\]([$URLSearchString]*)\[\/img\]\s*\[\/url\])ism", $body, $pictures,  PREG_SET_ORDER)) {
 187                         if (count($pictures) == 1) {
 188                                 // Checking, if the link goes to a picture
 189                                 $data = parseurl_getsiteinfo_cached($pictures[0][1], true);
 190                                 if ($data["type"] == "photo") {
 191                                         $post["type"] = "photo";
 192                                         if (isset($data["images"][0])) {
 193                                                 $post["image"] = $data["images"][0]["src"];
 194                                                 $post["url"] = $data["url"];
 195                                         } else
 196                                                 $post["image"] = $data["url"];
 197
 198                                         $post["preview"] = $pictures[0][2];
 199                                         $post["text"] = str_replace($pictures[0][0], "", $body);
 200                                 } else {
 201                                         $imgdata = get_photo_info($pictures[0][1]);
 202                                         if (substr($imgdata["mime"], 0, 6) == "image/") {
 203                                                 $post["type"] = "photo";
 204                                                 $post["image"] = $pictures[0][1];
 205                                                 $post["preview"] = $pictures[0][2];
 206                                                 $post["text"] = str_replace($pictures[0][0], "", $body);
 207                                         }
 208                                 }
 209                         } elseif (count($pictures) > 1) {
 210                                 $post["type"] = "link";
 211                                 $post["url"] = $b["plink"];
 212                                 $post["image"] = $pictures[0][2];
 213                                 $post["text"] = $body;
 214                         }
 215                 } elseif (preg_match_all("(\[img\]([$URLSearchString]*)\[\/img\])ism", $body, $pictures,  PREG_SET_ORDER)) {
 216                         if (count($pictures) == 1) {
 217                                 $post["type"] = "photo";
 218                                 $post["image"] = $pictures[0][1];
 219                                 $post["text"] = str_replace($pictures[0][0], "", $body);
 220                         } elseif (count($pictures) > 1) {
 221                                 $post["type"] = "link";
 222                                 $post["url"] = $b["plink"];
 223                                 $post["image"] = $pictures[0][1];
 224                                 $post["text"] = $body;
 225                         }
 226                 }
 227
 228                 if (preg_match_all("(\[url\]([$URLSearchString]*)\[\/url\])ism", $body, $links,  PREG_SET_ORDER)) {
 229                         if (count($links) == 1) {
 230                                 $post["type"] = "text";
 231                                 $post["url"] = $links[0][1];
 232                                 $post["text"] = $body;
 233                         }
 234                 }
 235                 if (!isset($post["type"])) {
 236                         $post["type"] = "text";
 237                         $post["text"] = trim($body);
 238                 }
 239         } elseif (isset($post["url"]) AND ($post["type"] == "video")) {
 240                 require_once("mod/parse_url.php");
 241                 $data = parseurl_getsiteinfo_cached($post["url"], true);
 242
 243                 if (isset($data["images"][0]))
 244                         $post["image"] = $data["images"][0]["src"];
 245         }
 246
 247         return($post);
 248 }
 249
 250 function shortenmsg($msg, $limit, $twitter = false) {
 251         /// @TODO
 252         /// For Twitter URLs aren't shortened, but they have to be calculated as if.
 253
 254         $lines = explode("\n", $msg);
 255         $msg = "";
 256         $recycle = html_entity_decode("&#x2672; ", ENT_QUOTES, 'UTF-8');
 257         foreach ($lines AS $row=>$line) {
 258                 if (iconv_strlen(trim($msg."\n".$line), "UTF-8") <= $limit)
 259                         $msg = trim($msg."\n".$line);
 260                 // Is the new message empty by now or is it a reshared message?
 261                 elseif (($msg == "") OR (($row == 1) AND (substr($msg, 0, 4) == $recycle)))
 262                         $msg = iconv_substr(iconv_substr(trim($msg."\n".$line), 0, $limit, "UTF-8"), 0, -3, "UTF-8")."...";
 263                 else
 264                         break;
 265         }
 266         return($msg);
 267 }
 268
 269 /**
 270  * @brief Convert a message into plaintext for connectors to other networks
 271  *
 272  * @param App $a The application class
 273  * @param array $b The message array that is about to be posted
 274  * @param int $limit The maximum number of characters when posting to that network
 275  * @param bool $includedlinks Has an attached link to be included into the message?
 276  * @param int $htmlmode This triggers the behaviour of the bbcode conversion
 277  * @param string $target_network Name of the network where the post should go to.
 278  *
 279  * @return string The converted message
 280  */
 281 function plaintext($a, $b, $limit = 0, $includedlinks = false, $htmlmode = 2, $target_network = "") {
 282         require_once("include/bbcode.php");
 283         require_once("include/html2plain.php");
 284         require_once("include/network.php");
 285
 286         // Remove the hash tags
 287         $URLSearchString = "^\[\]";
 288         $body = preg_replace("/([#@])\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '$1$3', $b["body"]);
 289
 290         // Add an URL element if the text contains a raw link
 291         $body = preg_replace("/([^\]\='".'"'."]|^)(https?\:\/\/[a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", '$1[url]$2[/url]', $body);
 292
 293         // Remove the abstract
 294         $body = remove_abstract($body);
 295
 296         // At first look at data that is attached via "type-..." stuff
 297         // This will hopefully replaced with a dedicated bbcode later
 298         //$post = get_attached_data($b["body"]);
 299         $post = get_attached_data($body);
 300
 301         if (($b["title"] != "") AND ($post["text"] != ""))
 302                 $post["text"] = trim($b["title"]."\n\n".$post["text"]);
 303         elseif ($b["title"] != "")
 304                 $post["text"] = trim($b["title"]);
 305
 306         $abstract = "";
 307
 308         // Fetch the abstract from the given target network
 309         if ($target_network != "") {
 310                 $default_abstract = fetch_abstract($b["body"]);
 311                 $abstract = fetch_abstract($b["body"], $target_network);
 312
 313                 // If we post to a network with no limit we only fetch
 314                 // an abstract exactly for this network
 315                 if (($limit == 0) AND ($abstract == $default_abstract))
 316                         $abstract = "";
 317
 318         } else // Try to guess the correct target network
 319                 switch ($htmlmode) {
 320                         case 8:
 321                                 $abstract = fetch_abstract($b["body"], NETWORK_TWITTER);
 322                                 break;
 323                         case 7:
 324                                 $abstract = fetch_abstract($b["body"], NETWORK_STATUSNET);
 325                                 break;
 326                         case 6:
 327                                 $abstract = fetch_abstract($b["body"], NETWORK_APPNET);
 328                                 break;
 329                         default: // We don't know the exact target.
 330                                  // We fetch an abstract since there is a posting limit.
 331                                 if ($limit > 0)
 332                                         $abstract = fetch_abstract($b["body"]);
 333                 }
 334
 335         if ($abstract != "") {
 336                 $post["text"] = $abstract;
 337
 338                 if ($post["type"] == "text") {
 339                         $post["type"] = "link";
 340                         $post["url"] = $b["plink"];
 341                 }
 342         }
 343
 344         $html = bbcode($post["text"], false, false, $htmlmode);
 345         $msg = html2plain($html, 0, true);
 346         $msg = trim(html_entity_decode($msg,ENT_QUOTES,'UTF-8'));
 347
 348         $link = "";
 349         if ($includedlinks) {
 350                 if ($post["type"] == "link")
 351                         $link = $post["url"];
 352                 elseif ($post["type"] == "text")
 353                         $link = $post["url"];
 354                 elseif ($post["type"] == "video")
 355                         $link = $post["url"];
 356                 elseif ($post["type"] == "photo")
 357                         $link = $post["image"];
 358
 359                 if (($msg == "") AND isset($post["title"]))
 360                         $msg = trim($post["title"]);
 361
 362                 if (($msg == "") AND isset($post["description"]))
 363                         $msg = trim($post["description"]);
 364
 365                 // If the link is already contained in the post, then it neeedn't to be added again
 366                 // But: if the link is beyond the limit, then it has to be added.
 367                 if (($link != "") AND strstr($msg, $link)) {
 368                         $pos = strpos($msg, $link);
 369
 370                         // Will the text be shortened in the link?
 371                         // Or is the link the last item in the post?
 372                         if (($limit > 0) AND ($pos < $limit) AND (($pos + 23 > $limit) OR ($pos + strlen($link) == strlen($msg))))
 373                                 $msg = trim(str_replace($link, "", $msg));
 374                         elseif (($limit == 0) OR ($pos < $limit)) {
 375                                 // The limit has to be increased since it will be shortened - but not now
 376                                 // Only do it with Twitter (htmlmode = 8)
 377                                 if (($limit > 0) AND (strlen($link) > 23) AND ($htmlmode == 8))
 378                                         $limit = $limit - 23 + strlen($link);
 379
 380                                 $link = "";
 381
 382                                 if ($post["type"] == "text")
 383                                         unset($post["url"]);
 384                         }
 385                 }
 386         }
 387
 388         if ($limit > 0) {
 389                 // Reduce multiple spaces
 390                 // When posted to a network with limited space, we try to gain space where possible
 391                 while (strpos($msg, "  ") !== false)
 392                         $msg = str_replace("  ", " ", $msg);
 393
 394                 // Twitter is using its own limiter, so we always assume that shortened links will have this length
 395                 if (iconv_strlen($link, "UTF-8") > 0)
 396                         $limit = $limit - 23;
 397
 398                 if (iconv_strlen($msg, "UTF-8") > $limit) {
 399
 400                         if (($post["type"] == "text") AND isset($post["url"]))
 401                                 $post["url"] = $b["plink"];
 402                         elseif (!isset($post["url"])) {
 403                                 $limit = $limit - 23;
 404                                 $post["url"] = $b["plink"];
 405                         } elseif (strpos($b["body"], "[share") !== false)
 406                                 $post["url"] = $b["plink"];
 407                         elseif (get_pconfig($b["uid"], "system", "no_intelligent_shortening"))
 408                                 $post["url"] = $b["plink"];
 409
 410                         $msg = shortenmsg($msg, $limit);
 411                 }
 412         }
 413
 414         $post["text"] = trim($msg);
 415
 416         return($post);
 417 }
 418 ?>