functions/imap_messages.php

   1 <?php
   2
   3 /**
   4  * imap_messages.php
   5  *
   6  * Copyright (c) 1999-2005 The SquirrelMail Project Team
   7  * Licensed under the GNU GPL. For full terms see the file COPYING.
   8  *
   9  * This implements functions that manipulate messages
  10  * NOTE: Quite a few functions in this file are obsolete
  11  *
  12  * @version $Id$
  13  * @package squirrelmail
  14  * @subpackage imap
  15  */
  16
  17
  18 /**
  19  * Copy a set of messages ($id) to another mailbox ($mailbox)
  20  * @param int $imap_stream The resource ID for the IMAP socket
  21  * @param string $id The list of messages to copy
  22  * @param string $mailbox The destination to copy to
  23  * @return bool
  24  */
  25 function sqimap_msgs_list_copy($imap_stream, $id, $mailbox) {
  26     $msgs_id = sqimap_message_list_squisher($id);
  27     $read = sqimap_run_command ($imap_stream, "COPY $msgs_id " . sqimap_encode_mailbox_name($mailbox), true, $response, $message, TRUE);
  28     if ($response == 'OK') {
  29         return true;
  30     } else {
  31         return false;
  32     }
  33 }
  34
  35
  36 /**
  37  * Move a set of messages ($id) to another mailbox. Deletes the originals.
  38  * @param int $imap_stream The resource ID for the IMAP socket
  39  * @param string $id The list of messages to move
  40  * @param string $mailbox The destination to move to
  41  * @return void
  42  */
  43 function sqimap_msgs_list_move($imap_stream, $id, $mailbox) {
  44     $msgs_id = sqimap_message_list_squisher($id);
  45     if (sqimap_msgs_list_copy ($imap_stream, $id, $mailbox)) {
  46         return sqimap_toggle_flag($imap_stream, $id, '\\Deleted', true, true);
  47     } else {
  48         return false;
  49     }
  50 }
  51
  52
  53 /**
  54  * Deletes a message and move it to trash or expunge the mailbox
  55  * @param  resource imap connection
  56  * @param  string $mailbox mailbox, used for checking if it concerns the trash_folder
  57  * @param  array $id list with uid's
  58  * @param  bool   $bypass_trash skip copy to trash
  59  * @return array  $aMessageList array with messages containing the new flags and UID @see parseFetch
  60  */
  61 function sqimap_msgs_list_delete($imap_stream, $mailbox, $id, $bypass_trash=false) {
  62     // FIX ME, remove globals by introducing an associative array with properties
  63     // as 4th argument as replacement for the bypass_trash var
  64     global $move_to_trash, $trash_folder;
  65     $bRes = true;
  66     if (($move_to_trash == true) && ($bypass_trash != true) &&
  67         (sqimap_mailbox_exists($imap_stream, $trash_folder) &&  ($mailbox != $trash_folder)) ) {
  68         $bRes = sqimap_msgs_list_copy ($imap_stream, $id, $trash_folder);
  69     }
  70     if ($bRes) {
  71         return sqimap_toggle_flag($imap_stream, $id, '\\Deleted', true, true);
  72     } else {
  73         return false;
  74     }
  75 }
  76
  77
  78 /**
  79  * Set a flag on the provided uid list
  80  * @param  resource imap connection
  81  * @param  array $id list with uid's
  82  * @param  string $flag Flags to set/unset flags can be i.e.'\Seen', '\Answered', '\Seen \Answered'
  83  * @param  bool   $set  add (true) or remove (false) the provided flag
  84  * @param  bool   $handle_errors Show error messages in case of a NO, BAD or BYE response
  85  * @return array  $aMessageList array with messages containing the new flags and UID @see parseFetch
  86  */
  87 function sqimap_toggle_flag($imap_stream, $id, $flag, $set, $handle_errors) {
  88     $msgs_id = sqimap_message_list_squisher($id);
  89     $set_string = ($set ? '+' : '-');
  90     $aResponse = sqimap_run_command_list($imap_stream, "STORE $msgs_id ".$set_string."FLAGS ($flag)", $handle_errors, $response, $message, TRUE);
  91     // parse the fetch response
  92     return parseFetch($aResponse);
  93 }
  94
  95
  96 /**
  97  * Sort the message list and crunch to be as small as possible
  98  * (overflow could happen, so make it small if possible)
  99  */
 100 function sqimap_message_list_squisher($messages_array) {
 101     if( !is_array( $messages_array ) ) {
 102         return $messages_array;
 103     }
 104
 105     sort($messages_array, SORT_NUMERIC);
 106     $msgs_str = '';
 107     while ($messages_array) {
 108         $start = array_shift($messages_array);
 109         $end = $start;
 110         while (isset($messages_array[0]) && $messages_array[0] == $end + 1) {
 111             $end = array_shift($messages_array);
 112         }
 113         if ($msgs_str != '') {
 114             $msgs_str .= ',';
 115         }
 116         $msgs_str .= $start;
 117         if ($start != $end) {
 118             $msgs_str .= ':' . $end;
 119         }
 120     }
 121     return $msgs_str;
 122 }
 123
 124
 125 /**
 126  * Retrieves an array with a sorted uid list. Sorting is done on the imap server
 127  * @link http://www.ietf.org/internet-drafts/draft-ietf-imapext-sort-17.txt
 128  * @param resource $imap_stream IMAP socket connection
 129  * @param string $sSortField Field to sort on
 130  * @param bool $reverse Reverse order search
 131  * @return array $id sorted uid list
 132  */
 133 function sqimap_get_sort_order($imap_stream, $sSortField, $reverse, $search='ALL') {
 134     global  $default_charset;
 135
 136     if ($sSortField) {
 137         if ($reverse) {
 138             $sSortField = 'REVERSE '.$sSortField;
 139         }
 140         $query = "SORT ($sSortField) ".strtoupper($default_charset)." $search";
 141         // FIX ME sqimap_run_command should return the parsed data accessible by $aDATA['SORT']
 142         $aData = sqimap_run_command ($imap_stream, $query, false, $response, $message, TRUE);
 143         /* fallback to default charset */
 144         if ($response == 'NO' && strpos($message,'[BADCHARSET]') !== false) {
 145             $query = "SORT ($sSortField) US-ASCII $search";
 146             $aData = sqimap_run_command ($imap_stream, $query, true, $response, $message, TRUE);
 147         }
 148     }
 149
 150     if ($response == 'OK') {
 151         return parseUidList($aData,'SORT');
 152     } else {
 153         return false;
 154     }
 155 }
 156
 157
 158 /**
 159  * Parses a UID list returned on a SORT or SEARCH request
 160  * @param array $aData imap response
 161  * @param string $sCommand issued imap command (SEARCH or SORT)
 162  * @return array $aUid uid list
 163  */
 164 function parseUidList($aData,$sCommand) {
 165     $aUid = array();
 166     if (isset($aData) && count($aData)) {
 167         for ($i=0,$iCnt=count($aData);$i<$iCnt;++$i) {
 168             if (preg_match("/^\* $sCommand (.+)$/", $aData[$i], $aMatch)) {
 169                 $aUid += preg_split("/ /", trim($aMatch[1]));
 170             }
 171         }
 172     }
 173     return array_unique($aUid);
 174 }
 175
 176 /**
 177  * Retrieves an array with a sorted uid list. Sorting is done by SquirrelMail
 178  *
 179  * @param resource $imap_stream IMAP socket connection
 180  * @param string $sSortField Field to sort on
 181  * @param bool $reverse Reverse order search
 182  * @param array $aUid limit the search to the provided array with uid's default sqimap_get_small_headers uses 1:*
 183  * @return array $aUid sorted uid list
 184  */
 185 function get_squirrel_sort($imap_stream, $sSortField, $reverse = false, $aUid = NULL) {
 186     if ($sSortField != 'RFC822.SIZE' && $sSortField != 'INTERNALDATE') {
 187         $msgs = sqimap_get_small_header_list($imap_stream, $aUid,
 188                                       array($sSortField), array());
 189     } else {
 190         $msgs = sqimap_get_small_header_list($imap_stream, $aUid,
 191                                       array(), array($sSortField));
 192     }
 193     $aUid = array();
 194     $walk = false;
 195     switch ($sSortField) {
 196       // natcasesort section
 197       case 'FROM':
 198       case 'TO':
 199       case 'CC':
 200         if(!$walk) {
 201             array_walk($msgs, create_function('&$v,&$k,$f',
 202                 '$v[$f] = (isset($v[$f])) ? $v[$f] : "";
 203                  $addr = reset(parseRFC822Address($v[$f],1));
 204                  $sPersonal = (isset($addr[SQM_ADDR_PERSONAL]) && $addr[SQM_ADDR_PERSONAL]) ?
 205                    $addr[SQM_ADDR_PERSONAL] : "";
 206                  $sEmail = ($addr[SQM_ADDR_HOST]) ?
 207                       $addr[SQM_ADDR_MAILBOX] . "@".$addr[SQM_ADDR_HOST] :
 208                       $addr[SQM_ADDR_HOST];
 209                  $v[$f] = ($sPersonal) ? decodeHeader($sPersonal):$sEmail;'),$sSortField);
 210             $walk = true;
 211         }
 212         // nobreak
 213       case 'SUBJECT':
 214         if(!$walk) {
 215             array_walk($msgs, create_function('&$v,&$k,$f',
 216                 '$v[$f] = (isset($v[$f])) ? $v[$f] : "";
 217                  $v[$f] = strtolower(decodeHeader(trim($v[$f])));
 218                  $v[$f] = (preg_match("/^(vedr|sv|re|aw|\[\w\]):\s*(.*)$/si", $v[$f], $matches)) ?
 219                                     $matches[2] : $v[$f];'),$sSortField);
 220             $walk = true;
 221         }
 222         foreach ($msgs as $item) {
 223             $aUid[$item['UID']] = $item[$sSortField];
 224         }
 225         natcasesort($aUid);
 226         $aUid = array_keys($aUid);
 227         if ($reverse) {
 228              $aUid = array_reverse($aUid);
 229         }
 230         break;
 231         //  \natcasesort section
 232       // sort_numeric section
 233       case 'DATE':
 234       case 'INTERNALDATE':
 235         if(!$walk) {
 236             array_walk($msgs, create_function('&$v,$k,$f',
 237                 '$v[$f] = (isset($v[$f])) ? $v[$f] : "";
 238                  $v[$f] = getTimeStamp(explode(" ",$v[$f]));'),$sSortField);
 239             $walk = true;
 240         }
 241         // nobreak;
 242       case 'RFC822.SIZE':
 243         if(!$walk) {
 244             // redefine $sSortField to maintain the same namespace between
 245             // server-side sorting and SquirrelMail sorting
 246             $sSortField = 'SIZE';
 247         }
 248         foreach ($msgs as $item) {
 249             $aUid[$item['UID']] = (isset($item[$sSortField])) ? $item[$sSortField] : 0;
 250         }
 251         if ($reverse) {
 252             arsort($aUid,SORT_NUMERIC);
 253         } else {
 254             asort($aUid, SORT_NUMERIC);
 255         }
 256         $aUid = array_keys($aUid);
 257         break;
 258         // \sort_numeric section
 259       case 'UID':
 260         $aUid = array_reverse($msgs);
 261         break;
 262     }
 263     return $aUid;
 264 }
 265
 266
 267 /**
 268  * Returns an indent array for printMessageinfo()
 269  * This represents the amount of indent needed (value),
 270  * for this message number (key)
 271  */
 272
 273 /*
 274  * Notes for future work:
 275  * indent_array should contain: indent_level, parent and flags,
 276  * sibling notes ..
 277  * To achieve that we  need to define the following flags:
 278  * 0: hasnochildren
 279  * 1: haschildren
 280  * 2: is first
 281  * 4: is last
 282  * a node has sibling nodes if it's not the last node
 283  * a node has no sibling nodes if it's the last node
 284  * By using binary comparations we can store the flag in one var
 285  *
 286  * example:
 287  * -1      par = 0, level = 0, flag = 1 + 2 + 4 = 7 (haschildren,   isfirst, islast)
 288  *  \-2    par = 1, level = 1, flag = 0 + 2     = 2 (hasnochildren, isfirst)
 289  *  |-3    par = 1, level = 1, flag = 1 + 4     = 5 (haschildren,   islast)
 290  *   \-4   par = 3, level = 2, flag = 1 + 2 + 4 = 7 (haschildren,   isfirst, islast)
 291  *     \-5 par = 4, level = 3, flag = 0 + 2 + 4 = 6 (hasnochildren, isfirst, islast)
 292  */
 293 function get_parent_level($thread_new) {
 294     $parent = '';
 295     $child  = '';
 296     $cutoff = 0;
 297
 298     /*
 299      * loop through the threads and take unwanted characters out
 300      * of the thread string then chop it up
 301      */
 302     for ($i=0;$i<count($thread_new);$i++) {
 303         $thread_new[$i] = preg_replace("/\s\(/", "(", $thread_new[$i]);
 304         $thread_new[$i] = preg_replace("/(\d+)/", "$1|", $thread_new[$i]);
 305         $thread_new[$i] = preg_split("/\|/", $thread_new[$i], -1, PREG_SPLIT_NO_EMPTY);
 306     }
 307     $indent_array = array();
 308     if (!$thread_new) {
 309         $thread_new = array();
 310     }
 311     /* looping through the parts of one message thread */
 312
 313     for ($i=0;$i<count($thread_new);$i++) {
 314         /* first grab the parent, it does not indent */
 315
 316         if (isset($thread_new[$i][0])) {
 317             if (preg_match("/(\d+)/", $thread_new[$i][0], $regs)) {
 318                 $parent = $regs[1];
 319             }
 320         }
 321         $indent_array[$parent] = 0;
 322
 323         /*
 324          * now the children, checking each thread portion for
 325          * ),(, and space, adjusting the level and space values
 326          * to get the indent level
 327          */
 328         $level = 0;
 329         $spaces = array();
 330         $spaces_total = 0;
 331         $indent = 0;
 332         $fake = FALSE;
 333         for ($k=1,$iCnt=count($thread_new[$i])-1;$k<$iCnt;++$k) {
 334             $chars = count_chars($thread_new[$i][$k], 1);
 335             if (isset($chars['40'])) {       /* testing for ( */
 336                 $level += $chars['40'];
 337             }
 338             if (isset($chars['41'])) {      /* testing for ) */
 339                 $level -= $chars['41'];
 340                 $spaces[$level] = 0;
 341                 /* if we were faking lets stop, this portion
 342                  * of the thread is over
 343                  */
 344                 if ($level == $cutoff) {
 345                     $fake = FALSE;
 346                 }
 347             }
 348             if (isset($chars['32'])) {      /* testing for space */
 349                 if (!isset($spaces[$level])) {
 350                     $spaces[$level] = 0;
 351                 }
 352                 $spaces[$level] += $chars['32'];
 353             }
 354             for ($x=0;$x<=$level;$x++) {
 355                 if (isset($spaces[$x])) {
 356                     $spaces_total += $spaces[$x];
 357                 }
 358             }
 359             $indent = $level + $spaces_total;
 360             /* must have run into a message that broke the thread
 361              * so we are adjusting for that portion
 362              */
 363             if ($fake == TRUE) {
 364                 $indent = $indent +1;
 365             }
 366             if (preg_match("/(\d+)/", $thread_new[$i][$k], $regs)) {
 367                 $child = $regs[1];
 368             }
 369             /* the thread must be broken if $indent == 0
 370              * so indent the message once and start faking it
 371              */
 372             if ($indent == 0) {
 373                 $indent = 1;
 374                 $fake = TRUE;
 375                 $cutoff = $level;
 376             }
 377             /* dont need abs but if indent was negative
 378              * errors would occur
 379              */
 380             $indent_array[$child] = ($indent < 0) ? 0 : $indent;
 381             $spaces_total = 0;
 382         }
 383     }
 384     return $indent_array;
 385 }
 386
 387
 388 /**
 389  * Returns an array with each element as a string representing one
 390  * message-thread as returned by the IMAP server.
 391  * @link http://www.ietf.org/internet-drafts/draft-ietf-imapext-sort-13.txt
 392  */
 393 function get_thread_sort($imap_stream, $search='ALL') {
 394     global $thread_new, $sort_by_ref, $default_charset, $server_sort_array, $indent_array;
 395
 396     $thread_temp = array ();
 397     if ($sort_by_ref == 1) {
 398         $sort_type = 'REFERENCES';
 399     } else {
 400         $sort_type = 'ORDEREDSUBJECT';
 401     }
 402     $query = "THREAD $sort_type ".strtoupper($default_charset)." $search";
 403
 404     $thread_test = sqimap_run_command ($imap_stream, $query, false, $response, $message, TRUE);
 405     /* fallback to default charset */
 406     if ($response == 'NO' && strpos($message,'[BADCHARSET]') !== false) {
 407         $query = "THREAD $sort_type US-ASCII $search";
 408         $thread_test = sqimap_run_command ($imap_stream, $query, true, $response, $message, TRUE);
 409     }
 410     if (isset($thread_test[0])) {
 411         for ($i=0,$iCnt=count($thread_test);$i<$iCnt;++$i) {
 412             if (preg_match("/^\* THREAD (.+)$/", $thread_test[$i], $regs)) {
 413                 $thread_list = trim($regs[1]);
 414                 break;
 415             }
 416         }
 417     } else {
 418         $thread_list = "";
 419     }
 420     if (!preg_match("/OK/", $response)) {
 421         $server_sort_array = 'no';
 422         return $server_sort_array;
 423     }
 424     if (isset($thread_list)) {
 425         $thread_temp = preg_split("//", $thread_list, -1, PREG_SPLIT_NO_EMPTY);
 426     }
 427
 428     $counter = 0;
 429     $thread_new = array();
 430     $k = 0;
 431     $thread_new[0] = "";
 432     /*
 433      * parse the thread response into separate threads
 434      *
 435      * example:
 436      *         [0] => (540)
 437      *         [1] => (1386)
 438      *         [2] => (1599 759 959 37)
 439      *         [3] => (492 1787)
 440      *         [4] => ((933)(1891))
 441      *         [5] => (1030 (1497)(845)(1637))
 442      */
 443     for ($i=0,$iCnt=count($thread_temp);$i<$iCnt;$i++) {
 444         if ($thread_temp[$i] != ')' && $thread_temp[$i] != '(') {
 445             $thread_new[$k] = $thread_new[$k] . $thread_temp[$i];
 446         } elseif ($thread_temp[$i] == '(') {
 447             $thread_new[$k] .= $thread_temp[$i];
 448             $counter++;
 449         } elseif ($thread_temp[$i] == ')') {
 450             if ($counter > 1) {
 451                 $thread_new[$k] .= $thread_temp[$i];
 452                 $counter = $counter - 1;
 453             } else {
 454                 $thread_new[$k] .= $thread_temp[$i];
 455                 $k++;
 456                 $thread_new[$k] = "";
 457                 $counter = $counter - 1;
 458             }
 459         }
 460     }
 461
 462     $thread_new = array_reverse($thread_new);
 463     /* place the threads after each other in one string */
 464     $thread_list = implode(" ", $thread_new);
 465     $thread_list = str_replace("(", " ", $thread_list);
 466     $thread_list = str_replace(")", " ", $thread_list);
 467     $thread_list = preg_split("/\s/", $thread_list, -1, PREG_SPLIT_NO_EMPTY);
 468     $server_sort_array = $thread_list;
 469
 470     $indent_array = get_parent_level ($thread_new);
 471     return array($thread_list,$indent_array);
 472 }
 473
 474
 475 function elapsedTime($start) {
 476     $stop = gettimeofday();
 477     $timepassed =  1000000 * ($stop['sec'] - $start['sec']) + $stop['usec'] - $start['usec'];
 478     return $timepassed;
 479 }
 480
 481
 482 /**
 483  * Normalise the different Priority headers into a uniform value,
 484  * namely that of the X-Priority header (1, 3, 5). Supports:
 485  * Prioirty, X-Priority, Importance.
 486  * X-MS-Mail-Priority is not parsed because it always coincides
 487  * with one of the other headers.
 488  *
 489  * DUPLICATE CODE ALERT:
 490  * NOTE: this is actually a duplicate from the function in
 491  * class/mime/Rfc822Header.php.
 492  */
 493 function parsePriority($value) {
 494     $value = strtolower(array_shift(split('/\w/',trim($value))));
 495     if ( is_numeric($value) ) {
 496         return $value;
 497     }
 498     if ( $value == 'urgent' || $value == 'high' ) {
 499         return 1;
 500     } elseif ( $value == 'non-urgent' || $value == 'low' ) {
 501         return 5;
 502     }
 503     return 3;
 504 }
 505
 506 /**
 507  * Parses a string in an imap response. String starts with " or { which means it
 508  * can handle double quoted strings and literal strings
 509  *
 510  * @param string $read imap response
 511  * @param integer $i (reference) offset in string
 512  * @return string $s parsed string without the double quotes or literal count
 513  */
 514 function parseString($read,&$i) {
 515     $char = $read{$i};
 516     $s = '';
 517     if ($char == '"') {
 518         $iPos = ++$i;
 519         while (true) {
 520             $iPos = strpos($read,'"',$iPos);
 521             if (!$iPos) break;
 522             if ($iPos && $read{$iPos -1} != '\\') {
 523                 $s = substr($read,$i,($iPos-$i));
 524                 $i = $iPos;
 525                 break;
 526             }
 527             $iPos++;
 528             if ($iPos > strlen($read)) {
 529                 break;
 530             }
 531         }
 532     } else if ($char == '{') {
 533         $lit_cnt = '';
 534         ++$i;
 535         $iPos = strpos($read,'}',$i);
 536         if ($iPos) {
 537             $lit_cnt = substr($read, $i, $iPos - $i);
 538             $i += strlen($lit_cnt) + 3; /* skip } + \r + \n */
 539             /* Now read the literal */
 540             $s = ($lit_cnt ? substr($read,$i,$lit_cnt): '');
 541             $i += $lit_cnt;
 542             /* temp bugfix (SM 1.5 will have a working clean version)
 543                too much work to implement that version right now */
 544             --$i;
 545         } else { /* should never happen */
 546             $i += 3; /* } + \r + \n */
 547             $s = '';
 548         }
 549     } else {
 550         return false;
 551     }
 552     ++$i;
 553     return $s;
 554 }
 555
 556
 557 /**
 558  * Parses a string containing an array from an imap response. String starts with ( and end with )
 559  *
 560  * @param string $read imap response
 561  * @param integer $i (reference) offset in string
 562  * @return array $a
 563  */
 564 function parseArray($read,&$i) {
 565     $i = strpos($read,'(',$i);
 566     $i_pos = strpos($read,')',$i);
 567     $s = substr($read,$i+1,$i_pos - $i -1);
 568     $a = explode(' ',$s);
 569     if ($i_pos) {
 570         $i = $i_pos+1;
 571         return $a;
 572     } else {
 573         return false;
 574     }
 575 }
 576
 577
 578 /**
 579  * Retrieves a list with headers, flags, size or internaldate from the imap server
 580  * @param resource $imap_stream imap connection
 581  * @param array    $msg_list array with id's to create a msgs set from
 582  * @param array    $aHeaderFields requested header fields
 583  * @param array    $aFetchItems   requested other fetch items like FLAGS, RFC822.SIZE
 584  * @return array   $aMessages associative array with messages. Key is the UID, value is an associative array
 585  */
 586 function sqimap_get_small_header_list($imap_stream, $msg_list,
 587     $aHeaderFields = array('Date', 'To', 'Cc', 'From', 'Subject', 'X-Priority', 'Importance', 'Priority', 'Content-Type'),
 588     $aFetchItems = array('FLAGS', 'RFC822.SIZE', 'INTERNALDATE')) {
 589
 590     $aMessageList = array();
 591
 592     $bUidFetch = ! in_array('UID', $aFetchItems, true);
 593
 594     /* Get the small headers for each message in $msg_list */
 595     if ($msg_list !== NULL) {
 596         $msgs_str = sqimap_message_list_squisher($msg_list);
 597         /*
 598         * We need to return the data in the same order as the caller supplied
 599         * in $msg_list, but IMAP servers are free to return responses in
 600         * whatever order they wish... So we need to re-sort manually
 601         */
 602         if ($bUidFetch) {
 603             for ($i = 0; $i < sizeof($msg_list); $i++) {
 604                 $aMessageList["$msg_list[$i]"] = array();
 605             }
 606         }
 607     } else {
 608         $msgs_str = '1:*';
 609     }
 610
 611     /*
 612      * Create the query
 613      */
 614
 615     $sFetchItems = '';
 616     $query = "FETCH $msgs_str (";
 617     if (count($aFetchItems)) {
 618         $sFetchItems = implode(' ',$aFetchItems);
 619     }
 620     if (count($aHeaderFields)) {
 621         $sHeaderFields = implode(' ',$aHeaderFields);
 622         $sFetchItems .= ' BODY.PEEK[HEADER.FIELDS ('.$sHeaderFields.')]';
 623     }
 624     $query .= trim($sFetchItems) . ')';
 625     $aResponse = sqimap_run_command_list ($imap_stream, $query, true, $response, $message, $bUidFetch);
 626     $aMessages = parseFetch($aResponse,$aMessageList);
 627     array_reverse($aMessages);
 628     return $aMessages;
 629 }
 630
 631
 632 /**
 633  * Parses a fetch response, currently it can hande FLAGS, HEADERS, RFC822.SIZE, INTERNALDATE and UID
 634  * @param array    $aResponse Imap response
 635  * @param array    $aMessageList Placeholder array for results. The keys of the
 636  *                 placeholder array should be the UID so we can reconstruct the order.
 637  * @return array   $aMessageList associative array with messages. Key is the UID, value is an associative array
 638  * @author Marc Groot Koerkamp
 639  */
 640 function parseFetch($aResponse,$aMessageList = array()) {
 641     foreach ($aResponse as $r) {
 642         $msg = array();
 643         // use unset because we do isset below
 644         $read = implode('',$r);
 645
 646         /*
 647          * #id<space>FETCH<space>(
 648          */
 649
 650         /* extract the message id */
 651         $i_space = strpos($read,' ',2);
 652         $id = substr($read,2,$i_space-2);
 653         $msg['ID'] = $id;
 654         $fetch = substr($read,$i_space+1,5);
 655         if (!is_numeric($id) && $fetch !== 'FETCH') {
 656             $msg['ERROR'] = $read; // htmlspecialchars should be done just before display. this is backend code
 657             break;
 658         }
 659         $i = strpos($read,'(',$i_space+5);
 660         $read = substr($read,$i+1);
 661         $i_len = strlen($read);
 662         $i = 0;
 663         while ($i < $i_len && $i !== false) {
 664             /* get argument */
 665             $read = trim(substr($read,$i));
 666             $i_len = strlen($read);
 667             $i = strpos($read,' ');
 668             $arg = substr($read,0,$i);
 669             ++$i;
 670             switch ($arg)
 671             {
 672             case 'UID':
 673                 $i_pos = strpos($read,' ',$i);
 674                 if (!$i_pos) {
 675                     $i_pos = strpos($read,')',$i);
 676                 }
 677                 if ($i_pos) {
 678                     $unique_id = substr($read,$i,$i_pos-$i);
 679                     $i = $i_pos+1;
 680                 } else {
 681                     break 3;
 682                 }
 683                 break;
 684             case 'FLAGS':
 685                 $flags = parseArray($read,$i);
 686                 if (!$flags) break 3;
 687                 $aFlags = array();
 688                 foreach ($flags as $flag) {
 689                     $flag = strtolower($flag);
 690                     $aFlags[$flag] = true;
 691                 }
 692                 $msg['FLAGS'] = $aFlags;
 693                 break;
 694             case 'RFC822.SIZE':
 695                 $i_pos = strpos($read,' ',$i);
 696                 if (!$i_pos) {
 697                     $i_pos = strpos($read,')',$i);
 698                 }
 699                 if ($i_pos) {
 700                     $msg['SIZE'] = substr($read,$i,$i_pos-$i);
 701                     $i = $i_pos+1;
 702                 } else {
 703                     break 3;
 704                 }
 705
 706                 break;
 707             case 'ENVELOPE':
 708                 break; // to be implemented, moving imap code out of the nessages class
 709                 sqimap_parse_address($read,$i,$msg);
 710                 break; // to be implemented, moving imap code out of the nessages class
 711             case 'BODYSTRUCTURE':
 712                 break;
 713             case 'INTERNALDATE':
 714                 $msg['INTERNALDATE'] = trim(str_replace('  ', ' ',parseString($read,$i)));
 715                 break;
 716             case 'BODY.PEEK[HEADER.FIELDS':
 717             case 'BODY[HEADER.FIELDS':
 718                 $i = strpos($read,'{',$i);
 719                 $header = parseString($read,$i);
 720                 if ($header === false) break 2;
 721                 /* First we replace all \r\n by \n, and unfold the header */
 722                 $hdr = trim(str_replace(array("\r\n", "\n\t", "\n "),array("\n", ' ', ' '), $header));
 723                 /* Now we can make a new header array with */
 724                 /* each element representing a headerline  */
 725                 $hdr = explode("\n" , $hdr);
 726                 $aReceived = array();
 727                 foreach ($hdr as $line) {
 728                     $pos = strpos($line, ':');
 729                     if ($pos > 0) {
 730                         $field = strtolower(substr($line, 0, $pos));
 731                         if (!strstr($field,' ')) { /* valid field */
 732                             $value = trim(substr($line, $pos+1));
 733                             switch($field)
 734                             {
 735                             case 'to': $msg['TO'] = $value; break;
 736                             case 'cc': $msg['CC'] = $value; break;
 737                             case 'from': $msg['FROM'] = $value; break;
 738                             case 'date':
 739                                 $msg['DATE'] = str_replace('  ', ' ', $value);
 740                                 break;
 741                             case 'x-priority':
 742                             case 'importance':
 743                             case 'priority':
 744                                 $msg['PRIORITY'] = parsePriority($value); break;
 745                             case 'subject': $msg['SUBJECT'] = $value; break;
 746                             case 'content-type':
 747                                 $type = $value;
 748                                 if ($pos = strpos($type, ";")) {
 749                                     $type = substr($type, 0, $pos);
 750                                 }
 751                                 $type = explode("/", $type);
 752                                 if(!is_array($type) || count($type) < 2) {
 753                                     $msg['TYPE0'] = 'text';
 754                                     $msg['TYPE1'] = 'plain';
 755                                 } else {
 756                                     $msg['TYPE0'] = strtolower($type[0]);
 757                                     $msg['TYPE1'] = strtolower($type[1]);
 758                                 }
 759                                 break;
 760                             case 'received':
 761                                 $aReceived[] = $value;
 762                                 break;
 763                             default: break;
 764                             }
 765                         }
 766                     }
 767                 }
 768                 if (count($aReceived)) {
 769                     $msg['RECEIVED'] = $aReceived;
 770                 }
 771                 break;
 772             default:
 773                 ++$i;
 774                 break;
 775             }
 776         }
 777         $msgi ="$unique_id";
 778         $msg['UID'] = $unique_id;
 779
 780         $aMessageList[$msgi] = $msg;
 781         ++$msgi;
 782     }
 783     return $aMessageList;
 784 }
 785
 786
 787 /**
 788  * Work in process
 789  * @private
 790  * @author Marc Groot Koerkamp
 791  */
 792 function sqimap_parse_envelope($read, &$i, &$msg) {
 793     $arg_no = 0;
 794     $arg_a = array();
 795     ++$i;
 796     for ($cnt = strlen($read); ($i < $cnt) && ($read{$i} != ')'); ++$i) {
 797         $char = strtoupper($read{$i});
 798         switch ($char) {
 799             case '{':
 800             case '"':
 801                 $arg_a[] = parseString($read,$i);
 802                 ++$arg_no;
 803                 break;
 804             case 'N':
 805                 /* probably NIL argument */
 806                 if (strtoupper(substr($read, $i, 3)) == 'NIL') {
 807                     $arg_a[] = '';
 808                     ++$arg_no;
 809                     $i += 2;
 810                 }
 811                 break;
 812             case '(':
 813                 /* Address structure (with group support)
 814                 * Note: Group support is useless on SMTP connections
 815                 *       because the protocol doesn't support it
 816                 */
 817                 $addr_a = array();
 818                 $group = '';
 819                 $a=0;
 820                 for (; $i < $cnt && $read{$i} != ')'; ++$i) {
 821                     if ($read{$i} == '(') {
 822                         $addr = sqimap_parse_address($read, $i);
 823                         if (($addr[3] == '') && ($addr[2] != '')) {
 824                             /* start of group */
 825                             $group = $addr[2];
 826                             $group_addr = $addr;
 827                             $j = $a;
 828                         } else if ($group && ($addr[3] == '') && ($addr[2] == '')) {
 829                         /* end group */
 830                             if ($a == ($j+1)) { /* no group members */
 831                                 $group_addr[4] = $group;
 832                                 $group_addr[2] = '';
 833                                 $group_addr[0] = "$group: Undisclosed recipients;";
 834                                 $addr_a[] = $group_addr;
 835                                 $group ='';
 836                             }
 837                         } else {
 838                             $addr[4] = $group;
 839                             $addr_a[] = $addr;
 840                         }
 841                         ++$a;
 842                     }
 843                 }
 844                 $arg_a[] = $addr_a;
 845                 break;
 846             default: break;
 847         }
 848     }
 849
 850     if (count($arg_a) > 9) {
 851         $d = strtr($arg_a[0], array('  ' => ' '));
 852         $d = explode(' ', $d);
 853         if (!$arg_a[1]) $arg_a[1] = '';
 854         $msg['DATE'] = $d; /* argument 1: date */
 855         $msg['SUBJECT'] = $arg_a[1];     /* argument 2: subject */
 856         $msg['FROM'] = is_array($arg_a[2]) ? $arg_a[2][0] : '';     /* argument 3: from        */
 857         $msg['SENDER'] = is_array($arg_a[3]) ? $arg_a[3][0] : '';   /* argument 4: sender      */
 858         $msg['REPLY-TO'] = is_array($arg_a[4]) ? $arg_a[4][0] : '';  /* argument 5: reply-to    */
 859         $msg['TO'] = $arg_a[5];          /* argument 6: to          */
 860         $msg['CC'] = $arg_a[6];          /* argument 7: cc          */
 861         $msg['BCC'] = $arg_a[7];         /* argument 8: bcc         */
 862         $msg['IN-REPLY-TO'] = $arg_a[8];   /* argument 9: in-reply-to */
 863         $msg['MESSAGE-ID'] = $arg_a[9];  /* argument 10: message-id */
 864     }
 865 }
 866
 867
 868 /**
 869  * Work in process
 870  * @private
 871  * @author Marc Groot Koerkamp
 872  */
 873 function sqimap_parse_address($read, &$i) {
 874     $arg_a = array();
 875     for (; $read{$i} != ')'; ++$i) {
 876         $char = strtoupper($read{$i});
 877         switch ($char) {
 878             case '{':
 879             case '"': $arg_a[] =  parseString($read,$i); break;
 880             case 'n':
 881             case 'N':
 882                 if (strtoupper(substr($read, $i, 3)) == 'NIL') {
 883                     $arg_a[] = '';
 884                     $i += 2;
 885                 }
 886                 break;
 887             default: break;
 888         }
 889     }
 890
 891     if (count($arg_a) == 4) {
 892         return $arg_a;
 893
 894 //        $adr = new AddressStructure();
 895 //        $adr->personal = $arg_a[0];
 896 //        $adr->adl = $arg_a[1];
 897 //        $adr->mailbox = $arg_a[2];
 898 //        $adr->host = $arg_a[3];
 899     } else {
 900         $adr = '';
 901     }
 902     return $adr;
 903 }
 904
 905
 906 /**
 907  * Returns a message array with all the information about a message.
 908  * See the documentation folder for more information about this array.
 909  *
 910  * @param  resource $imap_stream imap connection
 911  * @param  integer  $id uid of the message
 912  * @param  string   $mailbox used for error handling, can be removed because we should return an error code and generate the message elsewhere
 913  * @return Message  Message object
 914  */
 915 function sqimap_get_message($imap_stream, $id, $mailbox) {
 916     // typecast to int to prohibit 1:* msgs sets
 917     $id = (int) $id;
 918     $flags = array();
 919     $read = sqimap_run_command($imap_stream, "FETCH $id (FLAGS BODYSTRUCTURE)", true, $response, $message, TRUE);
 920     if ($read) {
 921         if (preg_match('/.+FLAGS\s\((.*)\)\s/AUi',$read[0],$regs)) {
 922             if (trim($regs[1])) {
 923                 $flags = preg_split('/ /', $regs[1],-1,'PREG_SPLIT_NI_EMPTY');
 924             }
 925         }
 926     } else {
 927         /* the message was not found, maybe the mailbox was modified? */
 928         global $sort, $startMessage, $color;
 929
 930         $errmessage = _("The server couldn't find the message you requested.") .
 931             '<p>'._("Most probably your message list was out of date and the message has been moved away or deleted (perhaps by another program accessing the same mailbox).");
 932         /* this will include a link back to the message list */
 933         error_message($errmessage, $mailbox, $sort, (int) $startMessage, $color);
 934         exit;
 935     }
 936     $bodystructure = implode('',$read);
 937     $msg =  mime_structure($bodystructure,$flags);
 938     $read = sqimap_run_command($imap_stream, "FETCH $id BODY[HEADER]", true, $response, $message, TRUE);
 939     $rfc822_header = new Rfc822Header();
 940     $rfc822_header->parseHeader($read);
 941     $msg->rfc822_header = $rfc822_header;
 942     return $msg;
 943 }
 944
 945
 946 /**
 947  * Deprecated !!!!!!! DO NOT USE THIS, use sqimap_msgs_list_copy instead
 948  */
 949 function sqimap_messages_copy($imap_stream, $start, $end, $mailbox) {
 950     $read = sqimap_run_command ($imap_stream, "COPY $start:$end " . sqimap_encode_mailbox_name($mailbox), true, $response, $message, TRUE);
 951 }
 952
 953
 954 /**
 955  * Deprecated !!!!!!! DO NOT USE THIS, use sqimap_msgs_list_delete instead
 956  */
 957 function sqimap_messages_delete($imap_stream, $start, $end, $mailbox, $bypass_trash=false) {
 958     global $move_to_trash, $trash_folder;
 959
 960     if (($move_to_trash == true) && ($bypass_trash != true) &&
 961         (sqimap_mailbox_exists($imap_stream, $trash_folder) && ($mailbox != $trash_folder))) {
 962         sqimap_messages_copy ($imap_stream, $start, $end, $trash_folder);
 963     }
 964     sqimap_messages_flag ($imap_stream, $start, $end, "Deleted", true);
 965 }
 966
 967
 968 /**
 969  * Deprecated !!!!!!! DO NOT USE THIS, use sqimap_toggle_flag instead
 970  * Set a flag on the provided uid list
 971  * @param  resource imap connection
 972  */
 973 function sqimap_messages_flag($imap_stream, $start, $end, $flag, $handle_errors) {
 974     $read = sqimap_run_command ($imap_stream, "STORE $start:$end +FLAGS (\\$flag)", $handle_errors, $response, $message, TRUE);
 975 }
 976
 977
 978 /**
 979  * @deprecated
 980  */
 981 function sqimap_get_small_header($imap_stream, $id, $sent) {
 982     $res = sqimap_get_small_header_list($imap_stream, $id, $sent);
 983     return $res[0];
 984 }
 985
 986 ?>