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