banana/post.inc.php

   1 <?php
   2 /********************************************************************************
   3 * include/posts.inc.php : class for posts
   4 * -----------------------
   5 *
   6 * This file is part of the banana distribution
   7 * Copyright: See COPYING files that comes with this distribution
   8 ********************************************************************************/
   9
  10 /** class for posts
  11  */
  12
  13 class BananaPost
  14 {
  15     var $id;
  16     /** headers */
  17     var $headers;
  18     /** body */
  19     var $body;
  20     /** formating */
  21     var $messages;
  22     /** attachment */
  23     var $pj;
  24     /** poster name */
  25     var $name;
  26
  27     /** constructor
  28      * @param $_id STRING MSGNUM or MSGID (a group should be selected in this case)
  29      */
  30     function BananaPost($_id)
  31     {
  32         global $banana;
  33         $this->id       = $_id;
  34         $this->pj       = array();
  35         $this->messages = array();
  36         if (!$this->_header()) {
  37             return null;
  38         }
  39
  40
  41         if ($body = $banana->nntp->body($_id)) {
  42             $this->body = join("\n", $body);
  43         } else {
  44             return null;
  45         }
  46
  47         if (isset($this->headers['content-transfer-encoding'])) {
  48             if (preg_match("/base64/", $this->headers['content-transfer-encoding'])) {
  49                 $this->body = base64_decode($this->body);
  50             } elseif (preg_match("/quoted-printable/", $this->headers['content-transfer-encoding'])) {
  51                 $this->body = quoted_printable_decode($this->body);
  52             }
  53         }
  54
  55         if ($this->_split_multipart($this->headers, $this->body)) {
  56             $this->set_body_to_part(0);
  57         } else {
  58             $this->_split_multipart($mpart_type[1], $mpart_boundary[1]);
  59             $this->_find_uuencode();
  60             if (preg_match('!charset=([^;]*)\s*(;|$)!', $this->headers['content-type'], $matches)) {
  61                 $this->body = iconv($matches[1], 'utf-8', $this->body);
  62             } else {
  63                 $this->body = utf8_encode($this->body);
  64             }
  65         }
  66     }
  67
  68     /** find and add uuencoded attachments
  69      */
  70     function _find_uuencode()
  71     {
  72         if (preg_match_all('@\n(begin \d+ ([^\r\n]+)\r?(?:\n(?!end)[^\n]*)*\nend)@', $this->body, $matches, PREG_SET_ORDER)) {
  73             foreach ($matches as $match) {
  74                 $mime = trim(exec('echo '.escapeshellarg($match[1]).' | uudecode -o /dev/stdout | file -bi -'));
  75                 if ($mime != 'application/x-empty') {
  76                     $this->body = trim(str_replace($match[0], '', $this->body));
  77                     $body = $match[1];
  78                     $header['content-type'] = $mime.'; name="'.$match[2].'"';
  79                     $header['content-transfer-encoding'] = 'x-uuencode';
  80                     $header['content-disposition'] = 'attachment; filename="'.$match[2].'"';
  81                     $this->_add_attachment(Array('headers' => $header, 'body' => $body));
  82                 }
  83             }
  84         }
  85     }
  86
  87     /** split multipart messages
  88      * @param $type STRING multipart type description
  89      * @param $boundary STRING multipart boundary identification string
  90      */
  91     function _split_multipart($headers, $body)
  92     {
  93         if (!preg_match("@multipart/([^;]+);@", $headers['content-type'], $type)) {
  94             return false;
  95         }
  96
  97         preg_match("/boundary=\"?([^ \"]+)\"?/", $headers['content-type'], $boundary);
  98         $boundary = $boundary[1];
  99         $type     = $type[1];
 100         $parts    = preg_split("@\n--$boundary(--|\n)@", $body);
 101         foreach ($parts as $part) {
 102             $part         = $this->_get_part($part);
 103             $local_header = $part['headers'];
 104             $local_body   = $part['body'];
 105             if (!$this->_split_multipart($local_header, $local_body)) {
 106                 $is_text = isset($local_header['content-type']) && preg_match("@text/([^;]+);@", $local_header['content-type'])
 107                          && (!isset($local_header['content-disposition']) || !preg_match('@attachment@', $local_header['content-disposition']));
 108
 109                 // alternative ==> multiple formats for messages
 110                 if ($type == 'alternative' && $is_text) {
 111                     array_push($this->messages, $part);
 112
 113                 // !alternative ==> une body, others are attachments
 114                 } else if ($is_text) {
 115                     if (count($this->messages) == 0) {
 116                         $this->body = $local_body;
 117                         foreach (array_keys($local_header) as $key) {
 118                             $this->header[$key] = $local_header[$key];
 119                         }
 120                         array_push($this->messages, $part);
 121                     } else {
 122                         $this->_add_attachment($part);
 123                     }
 124                 } else {
 125                     $this->_add_attachment($part);
 126                 }
 127             }
 128         }
 129         return true;
 130     }
 131
 132     /** extract new headers from the part
 133      * @param $part STRING part of a multipart message
 134      */
 135     function _get_part($part)
 136     {
 137         global $banana;
 138
 139         $lines = split("\n", $part);
 140         while (count($lines)) {
 141             $line = array_shift($lines);
 142             if ($line != "") {
 143                 if (preg_match('@^[\t\r ]+@', $line) && isset($hdr)) {
 144                     $local_headers[$hdr] .= ' '.trim($line);
 145                 } else {
 146                     list($hdr, $val) = split(":[ \t\r]*", $line, 2);
 147                     $hdr = strtolower($hdr);
 148                     if (in_array($hdr, $banana->parse_hdr)) {
 149                         $local_headers[$hdr] = $val;
 150                     }
 151                 }
 152             } else {
 153                 break;
 154             }
 155         }
 156         $local_body = join("\n", $lines);
 157         if (preg_match("/quoted-printable/", $local_headers['content-transfer-encoding'])) {
 158             $local_body = quoted_printable_decode($local_body);
 159         }
 160         return Array('headers' => $local_headers, 'body' => $local_body);
 161     }
 162
 163     /** add an attachment
 164      */
 165     function _add_attachment($part)
 166     {
 167         $local_header = $part['headers'];
 168         $local_body = $part['body'];
 169
 170         if ((isset($local_header['content-disposition']) && preg_match("/filename=\"?([^\"]+)\"?/", $local_header['content-disposition'], $filename))
 171             || (isset($local_header['content-type']) && preg_match("/name=\"?([^\"]+)\"?/", $local_header['content-type'], $filename))) {
 172             $filename = $filename[1];
 173         }
 174         if (!isset($filename)) {
 175             $filename = "attachment".count($pj);
 176         }
 177
 178         if (isset($local_header['content-type'])) {
 179             if (preg_match("/^\\s*([^ ;]+);/", $local_header['content-type'], $mimetype)) {
 180                 $mimetype = $mimetype[1];
 181             }
 182         }
 183         if (!isset($mimetype)) {
 184             return false;
 185         }
 186
 187         array_push($this->pj, Array('MIME' => $mimetype,
 188                                     'filename' => $filename,
 189                                     'encoding' => strtolower($local_header['content-transfer-encoding']),
 190                                     'data' => $local_body));
 191         return true;
 192     }
 193
 194     /** return body in plain text (useful for messages without a text/plain part)
 195      */
 196     function get_body()
 197     {
 198         preg_match("@text/([^;]+);@", $this->headers['content-type'], $format);
 199         if ($format[1] == 'plain') {
 200             return $this->body;
 201         }
 202         if ($format[1] == 'richtext') {
 203             return htmlToPlainText(richtextToHtml($this->body));
 204         } else {
 205             return htmlToPlainText($this->body);
 206         }
 207     }
 208
 209     /** decode an attachment
 210      * @param pjid INT id of the attachment to decode
 211      * @param action BOOL action to execute : true=view, false=download
 212      */
 213     function get_attachment($pjid, $action = false)
 214     {
 215         if ($pjid >= count($this->pj)) {
 216             return false;
 217         } else {
 218             $file = $this->pj[$pjid];
 219             header('Content-Type: '.$file['MIME'].'; name="'.$file['filename'].'"');
 220             if (!$action) {
 221                 header('Content-Disposition: attachment; filename="'.$file['filename'].'"');
 222             } else {
 223                 header('Content-Disposition: inline; filename="'.$file['filename'].'"');
 224             }
 225             if ($file['encoding'] == 'base64') {
 226                 echo base64_decode($file['data']);
 227             } else if ($file['encoding'] == 'x-uuencode') {
 228                 passthru('echo '.escapeshellarg($file['data']).' | uudecode -o /dev/stdout');
 229             } else {
 230                 header('Content-Transfer-Encoding: '.$file['encoding']);
 231                 echo $file['data'];
 232             }
 233             return true;
 234         }
 235     }
 236
 237     /** set body to represent the given part
 238      * @param partid INT index of the part in messages
 239      */
 240     function set_body_to_part($partid)
 241     {
 242         global $banana;
 243
 244         if (count($this->messages) == 0) {
 245             return false;
 246         }
 247
 248         $local_header = $this->messages[$partid]['headers'];
 249         $this->body   = $this->messages[$partid]['body'];
 250         foreach ($banana->parse_hdr as $hdr) {
 251             if (isset($local_header[$hdr])) {
 252                 $this->headers[$hdr] = $local_header[$hdr];
 253             }
 254         }
 255
 256         if (preg_match('!charset=([^;]*)\s*(;|$)!', $this->headers['content-type'], $matches)) {
 257             $this->body = iconv($matches[1], 'utf-8', $this->body);
 258         } else {
 259             $this->body = utf8_encode($this->body);
 260         }
 261         return true;
 262     }
 263
 264     function _header()
 265     {
 266         global $banana;
 267         $hdrs = $banana->nntp->head($this->id);
 268         if (!$hdrs) {
 269             return false;
 270         }
 271
 272         // parse headers
 273         foreach ($hdrs as $line) {
 274             if (preg_match("/^[\t\r ]+/", $line)) {
 275                 $line = ($hdr=="X-Face"?"":" ").ltrim($line);
 276                 if (in_array($hdr, $banana->parse_hdr))  {
 277                     $this->headers[$hdr] .= $line;
 278                 }
 279             } else {
 280                 list($hdr, $val) = split(":[ \t\r]*", $line, 2);
 281                 $hdr = strtolower($hdr);
 282                 if (in_array($hdr, $banana->parse_hdr)) {
 283                     $this->headers[$hdr] = $val;
 284                 }
 285             }
 286         }
 287         // decode headers
 288         foreach ($banana->hdecode as $hdr) {
 289             if (isset($this->headers[$hdr])) {
 290                 $this->headers[$hdr] = headerDecode($this->headers[$hdr]);
 291             }
 292         }
 293
 294         $this->name = $this->headers['from'];
 295         $this->name = preg_replace('/<[^ ]*>/', '', $this->name);
 296         $this->name = trim($this->name);
 297         return true;
 298     }
 299
 300     function checkcancel()
 301     {
 302         if (function_exists('hook_checkcancel')) {
 303             return hook_checkcancel($this->headers);
 304         }
 305         return ($this->headers['from'] == $_SESSION['name']." <".$_SESSION['mail'].">");
 306     }
 307
 308     /** convert message to html
 309      * @param partid INT id of the multipart message that must be displaid
 310      */
 311     function to_html($partid = -1)
 312     {
 313         global $banana;
 314
 315         if (count($this->messages) > 1) {
 316             if ($partid != -1) {
 317                 $this->set_body_to_part($partid);
 318             } else {
 319                 // Select prefered text-format
 320                 foreach ($banana->body_mime as $mime) {
 321                     for ($id = 0 ; $id < count($this->messages) ; $id++) {
 322                         if (preg_match("@$mime@", $this->messages[$id]['headers']['content-type'])) {
 323                             $partid = $id;
 324                             $this->set_body_to_part($partid);
 325                             break;
 326                         }
 327                     }
 328                     if ($partid != -1) {
 329                         break;
 330                     }
 331                 }
 332                 if ($partid == -1) {
 333                     $partid = 0;
 334                 }
 335             }
 336         } else {
 337             $partid = 0;
 338         }
 339
 340         $res  = '<table class="bicol banana_msg" cellpadding="0" cellspacing="0">';
 341         $res .= '<tr><th colspan="2">'._b_('En-têtes').'</th></tr>';
 342         $res .= '<tr><td class="headers"><table cellpadding="0" cellspacing="0">';
 343
 344         foreach ($banana->show_hdr as $hdr) {
 345             if (isset($this->headers[$hdr])) {
 346                 $res2 = formatdisplayheader($hdr, $this->headers[$hdr]);
 347                 if ($res2 && ($hdr != 'x-face' || !$banana->formatxface)) {
 348                     $res .= '<tr><td class="hdr">'.header_translate($hdr)."</td><td class='val'>$res2</td></tr>\n";
 349                 } else if ($res2) {
 350                     $xface = $res2;
 351                 }
 352             }
 353         }
 354         $res .= '</table></td><td class="xface">';
 355
 356         if ($xface) {
 357             $res .= $xface;
 358         }
 359         $res .= '</td></tr>';
 360
 361         $res .= '<tr><th colspan="2">'._b_('Corps');
 362         if (count($this->messages) > 1) {
 363             for ($i = 0 ; $i < count($this->messages) ; $i++) {
 364                 if ($i == 0) {
 365                     $res .= ' : ';
 366                 } else {
 367                     $res .= ' . ';
 368                 }
 369                 preg_match("@text/([^;]+);@", $this->messages[$i]['headers']['content-type'], $format);
 370                 $format = textFormat_translate($format[1]);
 371                 if ($i != $partid) {
 372                     $res .= '<a href="?group='.$banana->state['group'].'&artid='.$this->id.'&part='.$i.'">'.$format.'</a>';
 373                 } else {
 374                     $res .= $format;
 375                 }
 376             }
 377         }
 378         $res .= '</th></tr>';
 379
 380         preg_match("@text/([^;]+);@", $this->headers['content-type'], $format);
 381         $format = $format[1];
 382         $res .= '<tr><td colspan="2"';
 383         if ($format == 'html') {
 384             if (preg_match('@<body[^>]*bgcolor="?([#0-9a-f]+)"?[^>]*>@i', $this->body, $bgcolor)) {
 385                 $res .= ' bgcolor="'.$bgcolor[1].'"';
 386             }
 387             $res .= '>'.formatbody($this->body, $format);
 388         } else {
 389             $res .= '><pre>'.formatbody($this->body).'</pre>';
 390         }
 391         $res .= '</td></tr>';
 392
 393         if (count($this->pj) > 0) {
 394             $res .= '<tr><th colspan="2">'._b_('Pièces jointes').'</th></tr>';
 395             $res .= '<tr><td colspan="2">';
 396             $i = 0;
 397             foreach ($this->pj as $file) {
 398                 $res .= $file['filename'].' ('.$file['MIME'].') : ';
 399                 $res .= '<a href="?group='.$banana->state['group'].'&artid='.$this->id.'&pj='.$i.'">télécharger</a>';
 400                 $res .= ' . <a href="?group='.$banana->state['group'].'&artid='.$this->id.'&pj='.$i.'&action=view" target="_blank">aperçu</a>';
 401                 $res .=  '<br/>';
 402                 $i++;
 403             }
 404             $res .= '</td></tr>';
 405         }
 406
 407         $res .= '<tr><th colspan="2">'._b_('Apercu').'</th></tr>';
 408         $ndx  = $banana->spool->getndx($this->id);
 409         $res .= '<tr><td class="thrd" colspan="2">'.$banana->spool->to_html($ndx-$banana->tbefore, $ndx+$banana->tafter, $ndx).'</td></tr>';
 410
 411         return $res.'</table>';
 412     }
 413 }
 414
 415 ?>