functions/imap_messages.php

   1 <?php
   2    /**
   3     **  imap_messages.php
   4     **
   5     **  This implements functions that manipulate messages
   6     **
   7     **  $Id$
   8     **/
   9
  10    if (defined ('imap_messages_php'))
  11        return;
  12    define ('imap_messages_php', true);
  13
  14    /******************************************************************************
  15     **  Copies specified messages to specified folder
  16     ******************************************************************************/
  17    function sqimap_messages_copy ($imap_stream, $start, $end, $mailbox) {
  18       fputs ($imap_stream, "a001 COPY $start:$end \"$mailbox\"\r\n");
  19       $read = sqimap_read_data ($imap_stream, "a001", true, $response, $message);
  20    }
  21
  22    /******************************************************************************
  23     **  Deletes specified messages and moves them to trash if possible
  24     ******************************************************************************/
  25    function sqimap_messages_delete ($imap_stream, $start, $end, $mailbox) {
  26       global $move_to_trash, $trash_folder, $auto_expunge;
  27
  28       if (($move_to_trash == true) && (sqimap_mailbox_exists($imap_stream, $trash_folder) && ($mailbox != $trash_folder))) {
  29          sqimap_messages_copy ($imap_stream, $start, $end, $trash_folder);
  30          sqimap_messages_flag ($imap_stream, $start, $end, "Deleted");
  31       } else {
  32          sqimap_messages_flag ($imap_stream, $start, $end, "Deleted");
  33       }
  34    }
  35
  36    /******************************************************************************
  37     **  Sets the specified messages with specified flag
  38     ******************************************************************************/
  39    function sqimap_messages_flag ($imap_stream, $start, $end, $flag) {
  40       fputs ($imap_stream, "a001 STORE $start:$end +FLAGS (\\$flag)\r\n");
  41       $read = sqimap_read_data ($imap_stream, "a001", true, $response, $message);
  42    }
  43
  44
  45    /******************************************************************************
  46     **  Remove specified flag from specified messages
  47     ******************************************************************************/
  48    function sqimap_messages_remove_flag ($imap_stream, $start, $end, $flag) {
  49       fputs ($imap_stream, "a001 STORE $start:$end -FLAGS (\\$flag)\r\n");
  50       $read = sqimap_read_data ($imap_stream, "a001", true, $response, $message);
  51    }
  52
  53
  54    /******************************************************************************
  55     **  Returns some general header information -- FROM, DATE, and SUBJECT
  56     ******************************************************************************/
  57    class small_header {
  58       var $from = '', $subject = '', $date = '', $to = '',
  59           $priority = 0, $message_id = 0, $cc = '';
  60    }
  61
  62    function sqimap_get_small_header ($imap_stream, $id, $sent) {
  63       $res = sqimap_get_small_header_list($imap_stream, array($id), $sent);
  64       return $res[0];
  65    }
  66
  67    // Sort the message list and crunch to be as small as possible
  68    // (overflow could happen, so make it small if possible)
  69    function sqimap_message_list_squisher($messages_array) {
  70       sort($messages_array, SORT_NUMERIC);
  71       $msgs_str = '';
  72       while ($messages_array) {
  73          $start = array_shift($messages_array);
  74          $end = $start;
  75          while (isset($messages_array[0]) && $messages_array[0] == $end + 1)
  76             $end = array_shift($messages_array);
  77          if ($msgs_str != '')
  78             $msgs_str .= ',';
  79          $msgs_str .= $start;
  80          if ($start != $end)
  81             $msgs_str .= ':' . $end;
  82       }
  83
  84       return $msgs_str;
  85    }
  86
  87    function sqimap_get_small_header_list ($imap_stream, $msg_list, $issent) {
  88       global $squirrelmail_language, $color;
  89
  90       /* Get the small headers for each message in $msg_list */
  91
  92       $maxmsg = sizeof($msg_list);
  93       $msgs_str = sqimap_message_list_squisher($msg_list);
  94       $results = array();
  95       $read_list = array();
  96       $sizes_list = array();
  97
  98       /* We need to return the data in the same order as the caller supplied
  99          in $msg_list, but IMAP servers are free to return responses in
 100          whatever order they wish... So we need to re-sort manually */
 101
 102       for ($i = 0; $i < sizeof($msg_list); $i++) {
 103          $id2index[$msg_list[$i]] = $i;
 104       }
 105
 106
 107       $query = "a001 FETCH $msgs_str BODY.PEEK[HEADER.FIELDS (Date To From Cc Subject Message-Id X-Priority Content-Type)]\r\n";
 108       fputs ($imap_stream, $query);
 109       $readin_list = sqimap_read_data_list($imap_stream, "a001", true, $response, $message);
 110
 111
 112       foreach ($readin_list as $r) {
 113          if (!eregi("^\\* ([0-9]+) FETCH", $r[0], $regs)) {
 114             set_up_language($squirrelmail_language);
 115             echo "<br><b><font color=$color[2]>\n";
 116             echo _("ERROR : Could not complete request.");
 117             echo "</b><br>\n";
 118             echo _("Unknown response from IMAP server: ");
 119             echo $r[0] . "</font><br>\n";
 120             exit;
 121          }
 122          if (! isset($id2index[$regs[1]]) || !count($id2index[$regs[1]])) {
 123             set_up_language($squirrelmail_language);
 124             echo "<br><b><font color=$color[2]>\n";
 125             echo _("ERROR : Could not complete request.");
 126             echo "</b><br>\n";
 127             echo _("Unknown message number in reply from server: ");
 128             echo $regs[1] . "</font><br>\n";
 129             exit;
 130          }
 131          $read_list[$id2index[$regs[1]]] = $r;
 132       }
 133       arsort($read_list);
 134
 135       $query = "a002 FETCH $msgs_str RFC822.SIZE\r\n";
 136       fputs ($imap_stream, $query);
 137       $sizesin_list = sqimap_read_data_list($imap_stream, "a002", true, $response, $message);
 138
 139       foreach ($sizesin_list as $r) {
 140          if (!eregi("^\\* ([0-9]+) FETCH", $r[0], $regs)) {
 141             set_up_language($squirrelmail_language);
 142             echo "<br><b><font color=$color[2]>\n";
 143             echo _("ERROR : Could not complete request.");
 144             echo "</b><br>\n";
 145             echo _("Unknown response from IMAP server: ");
 146             echo $r[0] . "</font><br>\n";
 147             exit;
 148          }
 149          if (!count($id2index[$regs[1]])) {
 150             set_up_language($squirrelmail_language);
 151             echo "<br><b><font color=$color[2]>\n";
 152             echo _("ERROR : Could not complete request.");
 153             echo "</b><br>\n";
 154             echo _("Unknown messagenumber in reply from server: ");
 155             echo $regs[1] . "</font><br>\n";
 156             exit;
 157          }
 158          $sizes_list[$id2index[$regs[1]]] = $r;
 159       }
 160       arsort($sizes_list);
 161
 162       for ($msgi = 0; $msgi < $maxmsg; $msgi++) {
 163          $subject = _("(no subject)");
 164          $from = _("Unknown Sender");
 165          $priority = 0;
 166          $messageid = "<>";
 167          $cc = "";
 168          $to = "";
 169          $date = "";
 170          $type[0] = "";
 171          $type[1] = "";
 172          $read = $read_list[$msgi];
 173
 174          for ($i = 0; $i < count($read); $i++) {
 175             if (eregi ("^to:(.*)$", $read[$i], $regs)) {
 176                //$to = sqimap_find_displayable_name(substr($read[$i], 3));
 177                $to = $regs[1];
 178             } else if (eregi ("^from:(.*)$", $read[$i], $regs)) {
 179                //$from = sqimap_find_displayable_name(substr($read[$i], 5));
 180                $from = $regs[1];
 181             } else if (eregi ("^x-priority:(.*)$", $read[$i], $regs)) {
 182                $priority = trim($regs[1]);
 183             } else if (eregi ("^message-id:(.*)$", $read[$i], $regs)) {
 184                $messageid = trim($regs[1]);
 185             } else if (eregi ("^cc:(.*)$", $read[$i], $regs)) {
 186                $cc = $regs[1];
 187             } else if (eregi ("^date:(.*)$", $read[$i], $regs)) {
 188                $date = $regs[1];
 189             } else if (eregi ("^subject:(.*)$", $read[$i], $regs)) {
 190                $subject = htmlspecialchars(trim($regs[1]));
 191                if ($subject == "")
 192                   $subject = _("(no subject)");
 193             } else if (eregi ("^content-type:(.*)$", $read[$i], $regs)) {
 194                $type = strtolower(trim($regs[1]));
 195                if ($pos = strpos($type, ";"))
 196                   $type = substr($type, 0, $pos);
 197                $type = explode("/", $type);
 198                if (! isset($type[1]))
 199                    $type[1] = '';
 200             }
 201
 202          }
 203          if (trim($date) == "") {
 204             fputs($imap_stream, "a002 FETCH $msg_list[$msgi] INTERNALDATE\r\n");
 205             $readdate = sqimap_read_data($imap_stream, "a002", true, $response, $message);
 206             if (eregi(".*INTERNALDATE \"(.*)\".*", $readdate[0], $regs)) {
 207                $date_list = explode(" ", trim($regs[1]));
 208                $date_list[0] = str_replace("-", " ", $date_list[0]);
 209                $date = implode(" ", $date_list);
 210             }
 211          }
 212          eregi("([0-9]+)[^0-9]*$", $sizes_list[$msgi][0], $regs);
 213          $size = $regs[1];
 214
 215          $header = new small_header;
 216          if ($issent == true)
 217             $header->from = (trim($to) != '')? $to : _("(only Cc/Bcc)");
 218          else
 219             $header->from = $from;
 220
 221          $header->date = $date;
 222          $header->subject = $subject;
 223          $header->to = $to;
 224          $header->priority = $priority;
 225          $header->message_id = $messageid;
 226          $header->cc = $cc;
 227          $header->size = $size;
 228          $header->type0 = $type[0];
 229          $header->type1 = $type[1];
 230
 231          $result[] = $header;
 232       }
 233       return $result;
 234    }
 235
 236    /******************************************************************************
 237     **  Returns the flags for the specified messages
 238     ******************************************************************************/
 239    function sqimap_get_flags ($imap_stream, $i) {
 240       fputs ($imap_stream, "a001 FETCH $i:$i FLAGS\r\n");
 241       $read = sqimap_read_data ($imap_stream, "a001", true, $response, $message);
 242       if (ereg("FLAGS(.*)", $read[0], $regs))
 243           return explode(" ", trim(ereg_replace('[\\(\\)\\\\]', '', $regs[1])));
 244       return Array('None');
 245    }
 246
 247    function sqimap_get_flags_list ($imap_stream, $msg_list) {
 248       $msgs_str = sqimap_message_list_squisher($msg_list);
 249       for ($i = 0; $i < sizeof($msg_list); $i++) {
 250          $id2index[$msg_list[$i]] = $i;
 251       }
 252       fputs ($imap_stream, "a001 FETCH $msgs_str FLAGS\r\n");
 253       $result_list = sqimap_read_data_list ($imap_stream, "a001", true, $response, $message);
 254       $result_flags = array();
 255
 256       for ($i = 0; $i < sizeof($result_list); $i++) {
 257          if (eregi("^\\* ([0-9]+).*FETCH.*FLAGS(.*)", $result_list[$i][0], $regs)
 258              && isset($id2index[$regs[1]]) && count($id2index[$regs[1]])) {
 259             $result_flags[$id2index[$regs[1]]] = explode(" ", trim(ereg_replace('[\\(\\)\\\\]', '', $regs[2])));
 260          } else {
 261             set_up_language($squirrelmail_language);
 262             echo "<br><b><font color=$color[2]>\n";
 263             echo _("ERROR : Could not complete request.");
 264             echo "</b><br>\n";
 265             echo _("Unknown response from IMAP server: ");
 266             echo $result_list[$i][0] . "</font><br>\n";
 267             exit;
 268          }
 269       }
 270       arsort($result_flags);
 271       return $result_flags;
 272    }
 273
 274    /******************************************************************************
 275     **  Returns a message array with all the information about a message.  See
 276     **  the documentation folder for more information about this array.
 277     ******************************************************************************/
 278    function sqimap_get_message ($imap_stream, $id, $mailbox) {
 279       $header = sqimap_get_message_header($imap_stream, $id, $mailbox);
 280       return sqimap_get_message_body($imap_stream, $header);
 281    }
 282
 283    /******************************************************************************
 284     **  Wrapper function that reformats the header information.
 285     ******************************************************************************/
 286    function sqimap_get_message_header ($imap_stream, $id, $mailbox) {
 287       fputs ($imap_stream, "a001 FETCH $id:$id BODY[HEADER]\r\n");
 288       $read = sqimap_read_data ($imap_stream, "a001", true, $response, $message);
 289
 290       $header = sqimap_get_header($imap_stream, $read);
 291       $header->id = $id;
 292       $header->mailbox = $mailbox;
 293
 294       return $header;
 295    }
 296
 297    /******************************************************************************
 298     **  Wrapper function that returns entity headers for use by decodeMime
 299     ******************************************************************************/
 300     /*
 301    function sqimap_get_entity_header ($imap_stream, &$read, &$type0, &$type1, &$bound, &$encoding, &$charset, &$filename) {
 302       $header = sqimap_get_header($imap_stream, $read);
 303       $type0 = $header["TYPE0"];
 304       $type1 = $header["TYPE1"];
 305       $bound = $header["BOUNDARY"];
 306       $encoding = $header["ENCODING"];
 307       $charset = $header["CHARSET"];
 308       $filename = $header["FILENAME"];
 309    }
 310     */
 311
 312    /******************************************************************************
 313     **  Queries the IMAP server and gets all header information.
 314     ******************************************************************************/
 315    function sqimap_get_header ($imap_stream, $read) {
 316       global $where, $what;
 317
 318       $hdr = new msg_header();
 319       $i = 0;
 320       // Set up some defaults
 321       $hdr->type0 = "text";
 322       $hdr->type1 = "plain";
 323       $hdr->charset = "us-ascii";
 324
 325       while ($i < count($read)) {
 326          if (substr($read[$i], 0, 17) == "MIME-Version: 1.0") {
 327             $hdr->mime = true;
 328             $i++;
 329          }
 330
 331          /** ENCODING TYPE **/
 332          else if (substr(strtolower($read[$i]), 0, 26) == "content-transfer-encoding:") {
 333             $hdr->encoding = strtolower(trim(substr($read[$i], 26)));
 334             $i++;
 335          }
 336
 337          /** CONTENT-TYPE **/
 338          else if (strtolower(substr($read[$i], 0, 13)) == "content-type:") {
 339             $cont = strtolower(trim(substr($read[$i], 13)));
 340             if (strpos($cont, ";"))
 341                $cont = substr($cont, 0, strpos($cont, ";"));
 342
 343
 344             if (strpos($cont, "/")) {
 345                $hdr->type0 = substr($cont, 0, strpos($cont, "/"));
 346                $hdr->type1 = substr($cont, strpos($cont, "/")+1);
 347             } else {
 348                $hdr->type0 = $cont;
 349             }
 350
 351
 352             $line = $read[$i];
 353             $i++;
 354             while ( (substr(substr($read[$i], 0, strpos($read[$i], " ")), -1) != ":") && (trim($read[$i]) != "") && (trim($read[$i]) != ")")) {
 355                str_replace("\n", "", $line);
 356                str_replace("\n", "", $read[$i]);
 357                $line = "$line $read[$i]";
 358                $i++;
 359             }
 360
 361             /** Detect the boundary of a multipart message **/
 362             if (eregi('boundary="([^"]+)"', $line, $regs)) {
 363                $hdr->boundary = $regs[1];
 364             }
 365
 366             /** Detect the charset **/
 367             if (strpos(strtolower(trim($line)), "charset=")) {
 368                $pos = strpos($line, "charset=") + 8;
 369                $charset = trim($line);
 370                if (strpos($line, ";", $pos) > 0) {
 371                   $charset = substr($charset, $pos, strpos($line, ";", $pos)-$pos);
 372                } else {
 373                   $charset = substr($charset, $pos);
 374                }
 375                $charset = str_replace("\"", "", $charset);
 376                $hdr->charset = $charset;
 377             } else {
 378                $hdr->charset = "us-ascii";
 379             }
 380
 381          }
 382
 383          else if (strtolower(substr($read[$i], 0, 20)) == "content-disposition:") {
 384             /** Add better dontent-disposition support **/
 385
 386             $line = $read[$i];
 387             $i++;
 388             while ( (substr(substr($read[$i], 0, strpos($read[$i], " ")), -1) != ":") && (trim($read[$i]) != "") && (trim($read[$i]) != ")")) {
 389                str_replace("\n", "", $line);
 390                str_replace("\n", "", $read[$i]);
 391                $line = "$line $read[$i]";
 392                $i++;
 393             }
 394
 395             /** Detects filename if any **/
 396             if (strpos(strtolower(trim($line)), "filename=")) {
 397                $pos = strpos($line, "filename=") + 9;
 398                $name = trim($line);
 399                if (strpos($line, " ", $pos) > 0) {
 400                   $name = substr($name, $pos, strpos($line, " ", $pos));
 401                } else {
 402                   $name = substr($name, $pos);
 403                }
 404                $name = str_replace("\"", "", $name);
 405                $hdr->filename = $name;
 406             }
 407          }
 408
 409          /** REPLY-TO **/
 410          else if (strtolower(substr($read[$i], 0, 9)) == "reply-to:") {
 411             $hdr->replyto = trim(substr($read[$i], 9, strlen($read[$i])));
 412             $i++;
 413          }
 414
 415          /** FROM **/
 416          else if (strtolower(substr($read[$i], 0, 5)) == "from:") {
 417             $hdr->from = trim(substr($read[$i], 5, strlen($read[$i]) - 6));
 418             if (! isset($hdr->replyto) || $hdr->replyto == "")
 419                $hdr->replyto = $hdr->from;
 420             $i++;
 421          }
 422          /** DATE **/
 423          else if (strtolower(substr($read[$i], 0, 5)) == "date:") {
 424             $d = substr($read[$i], 5);
 425             $d = trim($d);
 426             $d = strtr($d, array('  ' => ' '));
 427             $d = explode(' ', $d);
 428             $hdr->date = getTimeStamp($d);
 429             $i++;
 430          }
 431          /** SUBJECT **/
 432          else if (strtolower(substr($read[$i], 0, 8)) == "subject:") {
 433             $hdr->subject = trim(substr($read[$i], 8, strlen($read[$i]) - 9));
 434             if (strlen(Chop($hdr->subject)) == 0)
 435                $hdr->subject = _("(no subject)");
 436
 437             if ($where == "SUBJECT") {
 438                $hdr->subject = eregi_replace($what, "<b>\\0</b>", $hdr->subject);
 439             }
 440             $i++;
 441          }
 442          /** CC **/
 443          else if (strtolower(substr($read[$i], 0, 3)) == "cc:") {
 444             $pos = 0;
 445             $hdr->cc[$pos] = trim(substr($read[$i], 4));
 446             $i++;
 447             while (((substr($read[$i], 0, 1) == " ") || (substr($read[$i], 0, 1) == "\t"))  && (trim($read[$i]) != "")){
 448                $pos++;
 449                $hdr->cc[$pos] = trim($read[$i]);
 450                $i++;
 451             }
 452          }
 453          /** TO **/
 454          else if (strtolower(substr($read[$i], 0, 3)) == "to:") {
 455             $pos = 0;
 456             $hdr->to[$pos] = trim(substr($read[$i], 4));
 457             $i++;
 458             while (((substr($read[$i], 0, 1) == " ") || (substr($read[$i], 0, 1) == "\t"))  && (trim($read[$i]) != "")){
 459                $pos++;
 460                $hdr->to[$pos] = trim($read[$i]);
 461                $i++;
 462             }
 463          }
 464          /** MESSAGE ID **/
 465          else if (strtolower(substr($read[$i], 0, 11)) == "message-id:") {
 466             $hdr->message_id = trim(substr($read[$i], 11));
 467             $i++;
 468          }
 469
 470
 471          /** ERROR CORRECTION **/
 472          else if (substr($read[$i], 0, 1) == ")") {
 473             if (strlen(trim($hdr->subject)) == 0)
 474                 $hdr->subject = _("(no subject)");
 475
 476             if (strlen(trim($hdr->from)) == 0)
 477                 $hdr->from = _("(unknown sender)");
 478
 479             if (strlen(trim($hdr->date)) == 0)
 480                 $hdr->date = time();
 481             $i++;
 482          }
 483          else {
 484             $i++;
 485          }
 486       }
 487       return $hdr;
 488    }
 489
 490
 491    /******************************************************************************
 492     **  Returns the body of a message.
 493     ******************************************************************************/
 494    function sqimap_get_message_body ($imap_stream, &$header) {
 495       $id = $header->id;
 496       return decodeMime($imap_stream, $header);
 497    }
 498
 499
 500    /******************************************************************************
 501     **  Returns an array with the body structure
 502     ******************************************************************************/
 503 ?>