functions/mailbox_display.php

   1 <?php
   2
   3 /**
   4  * mailbox_display.php
   5  *
   6  * Copyright (c) 1999-2003 The SquirrelMail Project Team
   7  * Licensed under the GNU GPL. For full terms see the file COPYING.
   8  *
   9  * This contains functions that display mailbox information, such as the
  10  * table row that has sender, date, subject, etc...
  11  *
  12  * $Id$
  13  */
  14
  15 require_once(SM_PATH . 'functions/strings.php');
  16 require_once(SM_PATH . 'functions/html.php');
  17 require_once(SM_PATH . 'class/html.class.php');
  18 require_once(SM_PATH . 'functions/imap_mailbox.php');
  19
  20 /* Default value for page_selector_max. */
  21 define('PG_SEL_MAX', 10);
  22
  23 function elapsed($start)
  24 {
  25    $end = microtime();
  26    list($start2, $start1) = explode(" ", $start);
  27    list($end2, $end1) = explode(" ", $end);
  28   $diff1 = $end1 - $start1;
  29    $diff2 = $end2 - $start2;
  30    if( $diff2 < 0 ){
  31        $diff1 -= 1;
  32        $diff2 += 1.0;
  33   }
  34    return $diff2 + $diff1;
  35 }
  36
  37 function printMessageInfo($imapConnection, $t, $not_last=true, $key, $mailbox,
  38                           $start_msg, $where, $what) {
  39     global $checkall,
  40            $color, $msgs, $msort, $td_str, $msg,
  41            $default_use_priority,
  42            $message_highlight_list,
  43            $index_order,
  44            $indent_array,   /* indent subject by */
  45            $pos,            /* Search postion (if any)  */
  46            $thread_sort_messages, /* thread sorting on/off */
  47            $server_sort_order, /* sort value when using server-sorting */
  48            $row_count,
  49            $allow_server_sort; /* enable/disable server-side sorting */
  50     $color_string = $color[4];
  51
  52     if ($GLOBALS['alt_index_colors']) {
  53         if (!isset($row_count)) {
  54             $row_count = 0;
  55         }
  56         $row_count++;
  57         if ($row_count % 2) {
  58             if (!isset($color[12])) {
  59                 $color[12] = '#EAEAEA';
  60             }
  61             $color_string = $color[12];
  62         }
  63     }
  64     $msg = $msgs[$key];
  65
  66     if($mailbox == 'None') {
  67         $boxes   = sqimap_mailbox_list($imapConnection);
  68         $mailbox = $boxes[0]['unformatted'];
  69         unset($boxes);
  70     }
  71     $urlMailbox = urlencode($mailbox);
  72
  73     if (handleAsSent($mailbox)) {
  74        $msg['FROM'] = $msg['TO'];
  75     }
  76     $msg['FROM'] = parseAddress($msg['FROM'],1);
  77
  78        /*
  79         * This is done in case you're looking into Sent folders,
  80         * because you can have multiple receivers.
  81         */
  82
  83     $senderNames = $msg['FROM'];
  84     $senderName  = '';
  85     if (sizeof($senderNames)){
  86         foreach ($senderNames as $senderNames_part) {
  87             if ($senderName != '') {
  88                 $senderName .= ', ';
  89             }
  90             if ($senderNames_part[1]) {
  91                 $senderName .= decodeHeader($senderNames_part[1]);
  92             } else {
  93                 $senderName .= htmlspecialchars($senderNames_part[0]);
  94             }
  95         }
  96     }
  97     $senderName = str_replace('&nbsp;',' ',$senderName);
  98     echo html_tag( 'tr','','','','VALIGN="top"') . "\n";
  99
 100     if (isset($msg['FLAG_FLAGGED']) && ($msg['FLAG_FLAGGED'] == true)) {
 101         $flag = "<font color=\"$color[2]\">";
 102         $flag_end = '</font>';
 103     } else {
 104         $flag = '';
 105         $flag_end = '';
 106     }
 107     if (!isset($msg['FLAG_SEEN']) || ($msg['FLAG_SEEN'] == false)) {
 108         $bold = '<b>';
 109         $bold_end = '</b>';
 110     } else {
 111         $bold = '';
 112         $bold_end = '';
 113     }
 114     if (handleAsSent($mailbox)) {
 115         $italic = '<i>';
 116         $italic_end = '</i>';
 117     } else {
 118         $italic = '';
 119         $italic_end = '';
 120     }
 121     if (isset($msg['FLAG_DELETED']) && $msg['FLAG_DELETED']) {
 122         $fontstr = "<font color=\"$color[9]\">";
 123         $fontstr_end = '</font>';
 124     } else {
 125         $fontstr = '';
 126         $fontstr_end = '';
 127     }
 128
 129     if ($where && $what) {
 130         $searchstr = '&amp;where='.$where.'&amp;what='.$what;
 131     } else {
 132         $searchstr = '';
 133     }
 134
 135     if (is_array($message_highlight_list) && count($message_highlight_list)) {
 136         $msg['TO'] = parseAddress($msg['TO']);
 137         $msg['CC'] = parseAddress($msg['CC']);
 138         foreach ($message_highlight_list as $message_highlight_list_part) {
 139             if (trim($message_highlight_list_part['value']) != '') {
 140                 $high_val   = strtolower($message_highlight_list_part['value']);
 141                 $match_type = strtoupper($message_highlight_list_part['match_type']);
 142                 if($match_type == 'TO_CC') {
 143                     $match = array('TO', 'CC');
 144                 } else {
 145                     $match = array($match_type);
 146                 }
 147                 foreach($match as $match_type) {
 148                     switch($match_type) {
 149                         case('TO'):
 150                         case('CC'):
 151                         case('FROM'):
 152                             foreach ($msg[$match_type] as $address) {
 153                                 $address[0] = decodeHeader($address[0], true, false);
 154                                 $address[1] = decodeHeader($address[1], true, false);
 155                                 if (strstr('^^' . strtolower($address[0]), $high_val) ||
 156                                     strstr('^^' . strtolower($address[1]), $high_val)) {
 157                                     $hlt_color = $message_highlight_list_part['color'];
 158                                     break 4;
 159                                 }
 160                             }
 161                             break;
 162                         default:
 163                             $headertest = strtolower(decodeHeader($msg[$match_type], true, false));
 164                             if (strstr('^^' . $headertest, $high_val)) {
 165                                 $hlt_color = $message_highlight_list_part['color'];
 166                                 break 3;
 167                             }
 168                             break;
 169                     }
 170                 }
 171             }
 172         }
 173     }
 174
 175     if (!isset($hlt_color)) {
 176         $hlt_color = $color_string;
 177     }
 178     $checked = ($checkall == 1) ? ' CHECKED' : '';
 179     $col = 0;
 180     $msg['SUBJECT'] = decodeHeader($msg['SUBJECT']);
 181     $subject = processSubject($msg['SUBJECT'], $indent_array[$msg['ID']]);
 182     $subject = str_replace('&nbsp;',' ',$subject);
 183     if (sizeof($index_order)) {
 184         foreach ($index_order as $index_order_part) {
 185             switch ($index_order_part) {
 186             case 1: /* checkbox */
 187                 echo html_tag( 'td',
 188                                "<input type=checkbox name=\"msg[$t]\" value=\"".$msg['ID']."\"$checked>",
 189                                'center',
 190                                $hlt_color );
 191                 break;
 192             case 2: /* from */
 193                 echo html_tag( 'td',
 194                                $italic . $bold . $flag . $fontstr . $senderName .
 195                                $fontstr_end . $flag_end . $bold_end . $italic_end,
 196                                'left',
 197                                $hlt_color );
 198                 break;
 199             case 3: /* date */
 200                 $date_string = $msg['DATE_STRING'] . '';
 201                 if ($date_string == '') {
 202                     $date_string = _("Unknown date");
 203                 }
 204                 echo html_tag( 'td',
 205                                $bold . $flag . $fontstr . $date_string .
 206                                $fontstr_end . $flag_end . $bold_end,
 207                                'center',
 208                                $hlt_color,
 209                                'nowrap' );
 210                 break;
 211             case 4: /* subject */
 212                 $td_str = $bold;
 213                 if ($thread_sort_messages == 1) {
 214                     if (isset($indent_array[$msg['ID']])) {
 215                         $td_str .= str_repeat("&nbsp;&nbsp;&nbsp;&nbsp;",$indent_array[$msg['ID']]);
 216                     }
 217                 }
 218                 $td_str .= '<a href="read_body.php?mailbox='.$urlMailbox
 219                         .  '&amp;passed_id='. $msg["ID"]
 220                         .  '&amp;startMessage='.$start_msg.$searchstr.'"';
 221                 $td_str .= ' ' .concat_hook_function('subject_link', array($start_msg, $searchstr));
 222                 if ($subject != $msg['SUBJECT']) {
 223                     $title = get_html_translation_table(HTML_SPECIALCHARS);
 224                     $title = array_flip($title);
 225                     $title = strtr($msg['SUBJECT'], $title);
 226                     $title = str_replace('"', "''", $title);
 227                     $td_str .= " title=\"$title\"";
 228                 }
 229                 $td_str .= ">$flag$subject$flag_end</a>$bold_end";
 230                 echo html_tag( 'td', $td_str, 'left', $hlt_color );
 231                 break;
 232             case 5: /* flags */
 233                 $stuff = false;
 234                 $td_str = "<b><small>";
 235
 236                 if (isset($msg['FLAG_ANSWERED']) && $msg['FLAG_ANSWERED'] == true) {
 237                     $td_str .= _("A");
 238                     $stuff = true;
 239                 }
 240                 if ($msg['TYPE0'] == 'multipart') {
 241                     $td_str .= '+';
 242                     $stuff = true;
 243                 }
 244                 if ($default_use_priority) {
 245                     if ( ($msg['PRIORITY'] == 1) || ($msg['PRIORITY'] == 2) ) {
 246                         $td_str .= "<font color=\"$color[1]\">!</font>";
 247                         $stuff = true;
 248                     }
 249                     if ($msg['PRIORITY'] == 5) {
 250                         $td_str .= "<font color=\"$color[8]\">?</font>";
 251                         $stuff = true;
 252                     }
 253                 }
 254                 if (isset($msg['FLAG_DELETED']) && $msg['FLAG_DELETED'] == true) {
 255                     $td_str .= "<font color=\"$color[1]\">D</font>";
 256                     $stuff = true;
 257                 }
 258                 if (!$stuff) {
 259                     $td_str .= '&nbsp;';
 260                 }
 261                 do_hook("msg_envelope");
 262                 $td_str .= '</small></b>';
 263                 echo html_tag( 'td',
 264                                $td_str,
 265                                'center',
 266                                $hlt_color,
 267                                'nowrap' );
 268                 break;
 269             case 6: /* size */
 270                 echo html_tag( 'td',
 271                                $bold . $fontstr . show_readable_size($msg['SIZE']) .
 272                                $fontstr_end . $bold_end,
 273                                'right',
 274                                $hlt_color );
 275                 break;
 276             }
 277             ++$col;
 278         }
 279     }
 280     if ($not_last) {
 281         echo '</tr>' . "\n" . '<tr><td COLSPAN="' . $col . '" BGCOLOR="' .
 282              $color[0] . '" HEIGHT="1"></td></tr>' . "\n";
 283     } else {
 284         echo '</tr>'."\n";
 285     }
 286 }
 287
 288 function getServerMessages($imapConnection, $start_msg, $show_num, $num_msgs, $id) {
 289     if ($id != 'no') {
 290         $id = array_slice($id, ($start_msg-1), $show_num);
 291         $end = $start_msg + $show_num - 1;
 292         if ($num_msgs < $show_num) {
 293             $end_loop = $num_msgs;
 294         } else if ($end > $num_msgs) {
 295             $end_loop = $num_msgs - $start_msg + 1;
 296         } else {
 297             $end_loop = $show_num;
 298         }
 299         return fillMessageArray($imapConnection,$id,$end_loop,$show_num);
 300     } else {
 301         return false;
 302     }
 303 }
 304
 305 function getThreadMessages($imapConnection, $start_msg, $show_num, $num_msgs) {
 306     $id = get_thread_sort($imapConnection);
 307     return getServerMessages($imapConnection, $start_msg, $show_num, $num_msgs, $id);
 308 }
 309
 310 function getServerSortMessages($imapConnection, $start_msg, $show_num,
 311                                $num_msgs, $server_sort_order, $mbxresponse) {
 312     $id = sqimap_get_sort_order($imapConnection, $server_sort_order,$mbxresponse);
 313     return getServerMessages($imapConnection, $start_msg, $show_num, $num_msgs, $id);
 314 }
 315
 316 function getSelfSortMessages($imapConnection, $start_msg, $show_num,
 317                               $num_msgs, $sort, $mbxresponse) {
 318     $msgs = array();
 319     if ($num_msgs >= 1) {
 320         $id = sqimap_get_php_sort_order ($imapConnection, $mbxresponse);
 321         if ($sort < 6 ) {
 322             $end = $num_msgs;
 323             $end_loop = $end;
 324             /* set shownum to 999999 to fool sqimap_get_small_header_list
 325                and rebuild the msgs_str to 1:* */
 326             $show_num = 999999;
 327         } else {
 328             /* if it's not sorted */
 329             if ($start_msg + ($show_num - 1) < $num_msgs) {
 330                 $end_msg = $start_msg + ($show_num - 1);
 331             } else {
 332                 $end_msg = $num_msgs;
 333             }
 334             if ($end_msg < $start_msg) {
 335                 $start_msg = $start_msg - $show_num;
 336                 if ($start_msg < 1) {
 337                     $start_msg = 1;
 338                 }
 339             }
 340             $id = array_slice(array_reverse($id), ($start_msg-1), $show_num);
 341             $end = $start_msg + $show_num - 1;
 342             if ($num_msgs < $show_num) {
 343                 $end_loop = $num_msgs;
 344             } else if ($end > $num_msgs) {
 345                 $end_loop = $num_msgs - $start_msg + 1;
 346             } else {
 347                 $end_loop = $show_num;
 348             }
 349         }
 350         $msgs = fillMessageArray($imapConnection,$id,$end_loop, $show_num);
 351     }
 352     return $msgs;
 353 }
 354
 355
 356
 357 /*
 358  * This function loops through a group of messages in the mailbox
 359  * and shows them to the user.
 360  */
 361 function showMessagesForMailbox($imapConnection, $mailbox, $num_msgs,
 362                                 $start_msg, $sort, $color, $show_num,
 363                                 $use_cache, $mode='') {
 364     global $msgs, $msort, $auto_expunge, $thread_sort_messages,
 365            $allow_server_sort, $server_sort_order;
 366
 367     /*
 368      * For some reason, on PHP 4.3+, this being unset, and set in the session causes havoc
 369      * so setting it to an empty array beforehand seems to clean up the issue, and stopping the
 370      * "Your script possibly relies on a session side-effect which existed until PHP 4.2.3" error
 371      */
 372
 373     if (!isset($msort)) {
 374         $msort = array();
 375     }
 376
 377     if (!isset($msgs)) {
 378         $msgs = array();
 379     }
 380
 381     //$start = microtime();
 382     /* If autoexpunge is turned on, then do it now. */
 383     $mbxresponse = sqimap_mailbox_select($imapConnection, $mailbox);
 384     $srt = $sort;
 385     /* If autoexpunge is turned on, then do it now. */
 386     if ($auto_expunge == true) {
 387         $exp_cnt = sqimap_mailbox_expunge($imapConnection, $mailbox, false, '');
 388         $mbxresponse['EXISTS'] = $mbxresponse['EXISTS'] - $exp_cnt;
 389         $num_msgs = $mbxresponse['EXISTS'];
 390     }
 391
 392     if ($mbxresponse['EXISTS'] > 0) {
 393         /* if $start_msg is lower than $num_msgs, we probably deleted all messages
 394          * in the last page. We need to re-adjust the start_msg
 395          */
 396
 397         if($start_msg > $num_msgs) {
 398             $start_msg -= $show_num;
 399             if($start_msg < 1) {
 400                 $start_msg = 1;
 401             }
 402         }
 403
 404         /* This code and the next if() block check for
 405          * server-side sorting methods. The $id array is
 406          * formatted and $sort is set to 6 to disable
 407          * SM internal sorting
 408          */
 409
 410         if ($thread_sort_messages == 1) {
 411             $mode = 'thread';
 412         } elseif ($allow_server_sort == 1) {
 413             $mode = 'serversort';
 414         } else {
 415             $mode = '';
 416         }
 417
 418         if ($use_cache) {
 419             sqgetGlobalVar('msgs', $msgs, SQ_SESSION);
 420             sqgetGlobalVar('msort', $msort, SQ_SESSION);
 421         } else {
 422             sqsession_unregister('msort');
 423             sqsession_unregister('msgs');
 424         }
 425         switch ($mode) {
 426             case 'thread':
 427                 $id   = get_thread_sort($imapConnection);
 428                 $msgs = getServerMessages($imapConnection, $start_msg, $show_num, $num_msgs, $id);
 429                 if ($msgs === false) {
 430                     echo '<b><small><center><font color=red>' .
 431                          _("Thread sorting is not supported by your IMAP server.<br>Please report this to the system administrator.").
 432                          '</center></small></b>';
 433                     $thread_sort_messages = 0;
 434                     $msort = $msgs = array();
 435                 } else {
 436                     $msort= $msgs;
 437                     $sort = 6;
 438                 }
 439                 break;
 440             case 'serversort':
 441                 $id   = sqimap_get_sort_order($imapConnection, $sort, $mbxresponse);
 442                 $msgs = getServerMessages($imapConnection, $start_msg, $show_num, $num_msgs, $id);
 443                 if ($msgs === false) {
 444                     echo '<b><small><center><font color=red>' .
 445                          _( "Server-side sorting is not supported by your IMAP server.<br>Please report this to the system administrator.").
 446                          '</center></small></b>';
 447                     $sort = $server_sort_order;
 448                     $allow_server_sort = FALSE;
 449                     $msort = $msgs = array();
 450                     $id = array();
 451                 } else {
 452                     $msort = $msgs;
 453                     $sort = 6;
 454                 }
 455                 break;
 456             default:
 457                 if (!$use_cache) {
 458                     $msgs = getSelfSortMessages($imapConnection, $start_msg, $show_num,
 459                                                 $num_msgs, $sort, $mbxresponse);
 460                     $msort = calc_msort($msgs, $sort);
 461                 } /* !use cache */
 462                 break;
 463         } // switch
 464         sqsession_register($msort, 'msort');
 465         sqsession_register($msgs,  'msgs');
 466
 467     } /* if exists > 0 */
 468
 469     $res = getEndMessage($start_msg, $show_num, $num_msgs);
 470     $start_msg = $res[0];
 471     $end_msg   = $res[1];
 472
 473     $paginator_str = get_paginator_str($mailbox, $start_msg, $end_msg,
 474                                        $num_msgs, $show_num, $sort);
 475
 476     $msg_cnt_str = get_msgcnt_str($start_msg, $end_msg, $num_msgs);
 477
 478     do_hook('mailbox_index_before');
 479     echo '<table border="0" width="100%" cellpadding="0" cellspacing="0">';
 480     echo '<tr><td>';
 481
 482     mail_message_listing_beginning($imapConnection, $mailbox, $sort,
 483                                   $msg_cnt_str, $paginator_str, $start_msg);
 484     echo '</td></tr>';
 485     /* line between the button area and the list */
 486     echo '<tr><td HEIGHT="5" BGCOLOR="'.$color[4].'"></td></tr>';
 487
 488     echo '<tr><td>';
 489     echo '    <table width="100%" cellpadding="1" cellspacing="0" align="center"'.' border="0" bgcolor="'.$color[9].'">';
 490     echo '     <tr><td>';
 491     echo '       <table width="100%" cellpadding="1" cellspacing="0" align="center" border="0" bgcolor="'.$color[5].'">';
 492     echo '<tr><td>';
 493     printHeader($mailbox, $srt, $color, !$thread_sort_messages);
 494
 495     displayMessageArray($imapConnection, $num_msgs, $start_msg,
 496                       $msort, $mailbox, $sort, $color, $show_num,0,0);
 497     echo '</td></tr></table></td></tr></table>';
 498
 499     mail_message_listing_end($num_msgs, $paginator_str, $msg_cnt_str, $color);
 500     echo '</td></tr></table>';
 501     //$t = elapsed($start);
 502     //echo("elapsed time = $t seconds\n");
 503 }
 504
 505 function calc_msort($msgs, $sort) {
 506
 507     /*
 508      * 0 = Date (up)
 509      * 1 = Date (dn)
 510      * 2 = Name (up)
 511      * 3 = Name (dn)
 512      * 4 = Subject (up)
 513      * 5 = Subject (dn)
 514      */
 515
 516     if (($sort == 0) || ($sort == 1)) {
 517         foreach ($msgs as $item) {
 518             $msort[] = $item['TIME_STAMP'];
 519         }
 520     } elseif (($sort == 2) || ($sort == 3)) {
 521         foreach ($msgs as $item) {
 522             $msort[] = $item['FROM-SORT'];
 523         }
 524     } elseif (($sort == 4) || ($sort == 5)) {
 525         foreach ($msgs as $item) {
 526             $msort[] = $item['SUBJECT-SORT'];
 527         }
 528     } else {
 529         $msort = $msgs;
 530     }
 531     if ($sort < 6) {
 532         if ($sort % 2) {
 533             asort($msort);
 534         } else {
 535             arsort($msort);
 536         }
 537     }
 538     return $msort;
 539 }
 540
 541 function fillMessageArray($imapConnection, $id, $count, $show_num=false) {
 542     return sqimap_get_small_header_list($imapConnection, $id, $show_num);
 543 }
 544
 545
 546 /* Generic function to convert the msgs array into an HTML table. */
 547 function displayMessageArray($imapConnection, $num_msgs, $start_msg,
 548                              $msort, $mailbox, $sort, $color,
 549                              $show_num, $where=0, $what=0) {
 550     global $imapServerAddress, $use_mailbox_cache, $index_order,
 551            $indent_array, $thread_sort_messages, $allow_server_sort,
 552            $server_sort_order, $PHP_SELF;
 553
 554     $res = getEndMessage($start_msg, $show_num, $num_msgs);
 555     $start_msg = $res[0];
 556     $end_msg   = $res[1];
 557
 558     $urlMailbox = urlencode($mailbox);
 559
 560     /* get indent level for subject display */
 561     if ($thread_sort_messages == 1 && $num_msgs) {
 562         $indent_array = get_parent_level($imapConnection);
 563     }
 564
 565     $real_startMessage = $start_msg;
 566     if ($sort == 6) {
 567         if ($end_msg - $start_msg < $show_num - 1) {
 568             $end_msg = $end_msg - $start_msg + 1;
 569             $start_msg = 1;
 570         } else if ($start_msg > $show_num) {
 571             $end_msg = $show_num;
 572             $start_msg = 1;
 573         }
 574     }
 575     $endVar = $end_msg + 1;
 576
 577     /*
 578      * Loop through and display the info for each message.
 579      * ($t is used for the checkbox number)
 580      */
 581     $t = 0;
 582
 583     /* messages display */
 584
 585     if (!$num_msgs) {
 586     /* if there's no messages in this folder */
 587         echo html_tag( 'tr',
 588                 html_tag( 'td',
 589                           "<BR><b>" . _("THIS FOLDER IS EMPTY") . "</b><BR>&nbsp;",
 590                           'center',
 591                           $color[4],
 592                           'COLSPAN="' . count($index_order) . '"'
 593                 )
 594         );
 595     } elseif ($start_msg == $end_msg) {
 596     /* if there's only one message in the box, handle it differently. */
 597         if ($sort != 6) {
 598             $i = $start_msg;
 599         } else {
 600             $i = 1;
 601         }
 602         reset($msort);
 603         $k = 0;
 604         do {
 605             $key = key($msort);
 606             next($msort);
 607             $k++;
 608         } while (isset ($key) && ($k < $i));
 609         printMessageInfo($imapConnection, $t, true, $key, $mailbox,
 610                          $real_startMessage, $where, $what);
 611     } else {
 612         $i = $start_msg;
 613         reset($msort);
 614         $k = 0;
 615         do {
 616             $key = key($msort);
 617             next($msort);
 618             $k++;
 619         } while (isset ($key) && ($k < $i));
 620         $not_last = true;
 621         do {
 622             if (!$i || $i == $endVar-1) $not_last = false;
 623                 printMessageInfo($imapConnection, $t, $not_last, $key, $mailbox,
 624                                  $real_startMessage, $where, $what);
 625             $key = key($msort);
 626             $t++;
 627             $i++;
 628             next($msort);
 629         } while ($i && $i < $endVar);
 630     }
 631 }
 632
 633 /*
 634  * Displays the standard message list header. To finish the table,
 635  * you need to do a "</table></table>";
 636  *
 637  * $moveURL is the URL to submit the delete/move form to
 638  * $mailbox is the current mailbox
 639  * $sort is the current sorting method (-1 for no sorting available [searches])
 640  * $Message is a message that is centered on top of the list
 641  * $More is a second line that is left aligned
 642  */
 643
 644 function mail_message_listing_beginning ($imapConnection,
 645                                          $mailbox = '', $sort = -1,
 646                                          $msg_cnt_str = '',
 647                                          $paginator = '&nbsp;',
 648                                          $start_msg = 1) {
 649     global $color, $auto_expunge, $base_uri, $thread_sort_messages,
 650            $allow_thread_sort, $allow_server_sort, $server_sort_order,
 651            $PHP_SELF;
 652
 653     $php_self = $PHP_SELF;
 654     /* fix for incorrect $PHP_SELF */
 655     if (strpos($php_self, 'move_messages.php')) {
 656         $php_self = str_replace('move_messages.php', 'right_main.php', $php_self);
 657     }
 658     $urlMailbox = urlencode($mailbox);
 659
 660     if (preg_match('/^(.+)\?.+$/',$php_self,$regs)) {
 661         $source_url = $regs[1];
 662     } else {
 663         $source_url = $php_self;
 664     }
 665
 666     if (!isset($msg)) {
 667         $msg = '';
 668     }
 669     $moveFields = '<input type="hidden" name="msg" value="'.htmlspecialchars($msg).'">' .
 670                   '<input type="hidden" name="mailbox" value="'.htmlspecialchars($mailbox).'">' .
 671                   '<input type="hidden" name="startMessage" value="'.htmlspecialchars($start_msg).'">';
 672
 673 //    $moveURL = "move_messages.php?msg=$msg&amp;mailbox=$urlMailbox"
 674 //             . "&amp;startMessage=$start_msg";
 675     /*
 676      * This is the beginning of the message list table.
 677      * It wraps around all messages
 678      */
 679     $safe_name = preg_replace("/[^0-9A-Za-z_]/", '_', $mailbox);
 680     $form_name = "FormMsgs" . $safe_name;
 681     echo '<form name="' . $form_name . '" method="post" action="move_messages.php">' ."\n"
 682         . $moveFields
 683         . html_tag( 'table' ,
 684             html_tag( 'tr',
 685                 html_tag( 'td' ,
 686                     html_tag( 'table' ,
 687                         html_tag( 'tr',
 688                             html_tag( 'td', $paginator, 'left' ) .
 689                             html_tag( 'td', $msg_cnt_str, 'right' )
 690                         )
 691                     , '', $color[4], 'border="0" width="100%" cellpadding="1"  cellspacing="0"' )
 692                 , 'left', '', '' )
 693             , '', $color[0] )
 694             , '', '', 'border="0" width="100%" cellpadding="1"  cellspacing="0"' );
 695         /* line between header and button area */
 696         echo '<tr><td HEIGHT="5" BGCOLOR="'.$color[4].'"></td></tr>';
 697
 698         echo '<tr><td>';
 699         echo html_tag( 'tr' ) . "\n"
 700         . html_tag( 'td' ,'' , 'left', '', '' )
 701          . html_tag( 'table' ,'' , '', $color[9], 'border="0" width="100%" cellpadding="1"  cellspacing="0"' )
 702           . '<tr><td>'
 703            . html_tag( 'table' ,'' , '', $color[0], 'border="0" width="100%" cellpadding="1"  cellspacing="0"' )
 704             . html_tag( 'tr',
 705                 getSmallStringCell(_("Move Selected To"), 'left', 'nowrap') .
 706                 getSmallStringCell(_("Transform Selected Messages"), 'right')
 707             )
 708             . html_tag( 'tr' ) ."\n"
 709             . html_tag( 'td', '', 'left', '', 'valign="middle" nowrap' );
 710             getMbxList($imapConnection);
 711             echo getButton('SUBMIT', 'moveButton',_("Move")) . "\n";
 712             echo getButton('SUBMIT', 'attache',_("Forward")) . "\n";
 713
 714   echo "      </TD>\n"
 715          . html_tag( 'td', '', 'right', '', 'nowrap' );
 716
 717
 718
 719     if (!$auto_expunge) {
 720         echo getButton('SUBMIT', 'expungeButton',_("Expunge"))
 721              .'&nbsp;' . _("mailbox") . "\n";
 722     }
 723
 724     echo getButton('SUBMIT', 'markRead',_("Read"));
 725     echo getButton('SUBMIT', 'markUnread',_("Unread"));
 726     echo getButton('SUBMIT', 'delete',_("Delete")) ."&nbsp;\n";
 727     if (!strpos($php_self,'mailbox')) {
 728         $location = $php_self.'?mailbox=INBOX&amp;startMessage=1';
 729     } else {
 730         $location = $php_self;
 731     }
 732     echo '<INPUT TYPE="HIDDEN" NAME="location" VALUE="'.$location.'">';
 733     echo "</TD>\n"
 734          . "   </TR>\n";
 735
 736     /* draws thread sorting links */
 737     if ($allow_thread_sort == TRUE) {
 738         if ($thread_sort_messages == 1 ) {
 739             $set_thread = 2;
 740             $thread_name = _("Unthread View");
 741         } elseif ($thread_sort_messages == 0) {
 742             $set_thread = 1;
 743             $thread_name = _("Thread View");
 744         }
 745         echo html_tag( 'tr' ,
 746                     html_tag( 'td' ,
 747                               '&nbsp;<a href=' . $source_url . '?sort='
 748                               . "$sort" . '&start_messages=1&set_thread=' . "$set_thread"
 749                               . '&mailbox=' . urlencode($mailbox) . '><small>' . $thread_name
 750                               . '</a></small>&nbsp;'
 751                      , '', '', '' )
 752                  , '', '', '' );
 753     }
 754
 755     echo "</TABLE></td></tr></table></td></tr>\n";
 756
 757     do_hook('mailbox_form_before');
 758
 759     /* if using server sort we highjack the
 760      * the $sort var and use $server_sort_order
 761      * instead. but here we reset sort for a bit
 762      * since its easy
 763      */
 764     if ($allow_server_sort == TRUE) {
 765         $sort = $server_sort_order;
 766     }
 767 }
 768
 769 function mail_message_listing_end($num_msgs, $paginator_str, $msg_cnt_str, $color) {
 770   if ($num_msgs) {
 771     /* space between list and footer */
 772     echo '<tr><td HEIGHT="5" BGCOLOR="'.$color[4].'" COLSPAN="1">';
 773
 774     echo '</td></tr><tr><td>';
 775     echo html_tag( 'table',
 776             html_tag( 'tr',
 777                 html_tag( 'td',
 778                     html_tag( 'table',
 779                         html_tag( 'tr',
 780                             html_tag( 'td', $paginator_str ) .
 781                             html_tag( 'td', $msg_cnt_str, 'right' )
 782                         )
 783                     , '', $color[4], 'width="100%" border="0" cellpadding="1" cellspacing="0"' )
 784                 )
 785             )
 786         , '', $color[9], 'width="100%" border="0" cellpadding="1"  cellspacing="0"' );
 787     echo '</td></tr>';
 788   }
 789     /* End of message-list table */
 790
 791     do_hook('mailbox_index_after');
 792     echo "</FORM>\n";
 793 }
 794
 795 function printHeader($mailbox, $sort, $color, $showsort=true) {
 796     global $index_order;
 797     echo html_tag( 'tr' ,'' , 'center', $color[5] );
 798
 799     /* calculate the width of the subject column based on the
 800      * widths of the other columns */
 801     $widths = array(1=>1,2=>25,3=>5,4=>0,5=>1,6=>5);
 802     $subjectwidth = 100;
 803     foreach($index_order as $item) {
 804         $subjectwidth -= $widths[$item];
 805     }
 806
 807     foreach ($index_order as $item) {
 808         switch ($item) {
 809         case 1: /* checkbox */
 810         case 5: /* flags */
 811             echo html_tag( 'td' ,'&nbsp;' , '', '', 'width="1%"' );
 812             break;
 813         case 2: /* from */
 814             if (handleAsSent($mailbox)) {
 815                 echo html_tag( 'td' ,'' , 'left', '', 'width="25%"' )
 816                      . '<b>' . _("To") . '</b>';
 817             } else {
 818                 echo html_tag( 'td' ,'' , 'left', '', 'width="25%"' )
 819                      . '<b>' . _("From") . '</b>';
 820             }
 821             if ($showsort) {
 822                 ShowSortButton($sort, $mailbox, 2, 3);
 823             }
 824             echo "</td>\n";
 825             break;
 826         case 3: /* date */
 827             echo html_tag( 'td' ,'' , 'left', '', 'width="5%" nowrap' )
 828                  . '<b>' . _("Date") . '</b>';
 829             if ($showsort) {
 830                 ShowSortButton($sort, $mailbox, 0, 1);
 831             }
 832             echo "</td>\n";
 833             break;
 834         case 4: /* subject */
 835             echo html_tag( 'td' ,'' , 'left', '', 'width="'.$subjectwidth.'%"' )
 836                  . '<b>' . _("Subject") . '</b>';
 837             if ($showsort) {
 838                 ShowSortButton($sort, $mailbox, 4, 5);
 839             }
 840             echo "</td>\n";
 841             break;
 842         case 6: /* size */
 843             echo html_tag( 'td', '<b>' . _("Size") . '</b>', 'center', '', 'width="5%" nowrap' );
 844             break;
 845         }
 846     }
 847     echo "</tr>\n";
 848 }
 849
 850
 851 /*
 852  * This function shows the sort button. Isn't this a good comment?
 853  */
 854 function ShowSortButton($sort, $mailbox, $Up, $Down ) {
 855     global $PHP_SELF;
 856     /* Figure out which image we want to use. */
 857     if ($sort != $Up && $sort != $Down) {
 858         $img = 'sort_none.png';
 859         $which = $Up;
 860     } elseif ($sort == $Up) {
 861         $img = 'up_pointer.png';
 862         $which = $Down;
 863     } else {
 864         $img = 'down_pointer.png';
 865         $which = 6;
 866     }
 867
 868     if (preg_match('/^(.+)\?.+$/',$PHP_SELF,$regs)) {
 869         $source_url = $regs[1];
 870     } else {
 871         $source_url = $PHP_SELF;
 872     }
 873
 874     /* Now that we have everything figured out, show the actual button. */
 875     echo ' <a href="' . $source_url .'?newsort=' . $which
 876          . '&amp;startMessage=1&amp;mailbox=' . urlencode($mailbox)
 877          . '"><IMG SRC="../images/' . $img
 878          . '" BORDER=0 WIDTH=12 HEIGHT=10 ALT="sort"></a>';
 879 }
 880
 881 function get_selectall_link($start_msg, $sort) {
 882     global $checkall, $what, $where, $mailbox, $javascript_on;
 883     global $PHP_SELF, $PG_SHOWNUM;
 884
 885     $result = '';
 886     if ($javascript_on) {
 887         $safe_name = preg_replace("/[^0-9A-Za-z_]/", '_', $mailbox);
 888         $func_name = "CheckAll" . $safe_name;
 889         $form_name = "FormMsgs" . $safe_name;
 890         $result = '<script language="JavaScript" type="text/javascript">'
 891                 . "\n<!-- \n"
 892                 . "function " . $func_name . "() {\n"
 893                 . "  for (var i = 0; i < document." . $form_name . ".elements.length; i++) {\n"
 894                 . "    if(document." . $form_name . ".elements[i].type == 'checkbox'){\n"
 895                 . "      document." . $form_name . ".elements[i].checked = "
 896                 . "        !(document." . $form_name . ".elements[i].checked);\n"
 897                 . "    }\n"
 898                 . "  }\n"
 899                 . "}\n"
 900                 . "//-->\n"
 901                 . '</script><a href="javascript:void(0)" onClick="' . $func_name . '();">' . _("Toggle All")
 902 /*                . '</script><a href="javascript:' . $func_name . '()">' . _("Toggle All")*/
 903                 . "</a>\n";
 904     } else {
 905         if (strpos($PHP_SELF, "?")) {
 906             $result .= "<a href=\"$PHP_SELF&amp;mailbox=" . urlencode($mailbox)
 907                     .  "&amp;startMessage=$start_msg&amp;sort=$sort&amp;checkall=";
 908         } else {
 909             $result .= "<a href=\"$PHP_SELF?mailbox=" . urlencode($mailbox)
 910                     .  "&amp;startMessage=$start_msg&amp;sort=$sort&amp;checkall=";
 911         }
 912         if (isset($checkall) && $checkall == '1') {
 913             $result .= '0';
 914         } else {
 915             $result .= '1';
 916         }
 917
 918         if (isset($where) && isset($what)) {
 919             $result .= '&amp;where=' . urlencode($where)
 920                     .  '&amp;what=' . urlencode($what);
 921         }
 922         $result .= "\">";
 923
 924         if (isset($checkall) && ($checkall == '1')) {
 925             $result .= _("Unselect All");
 926         } else {
 927             $result .= _("Select All");
 928         }
 929         $result .= "</A>\n";
 930     }
 931
 932     /* Return our final result. */
 933     return ($result);
 934 }
 935
 936 /*
 937  * This function computes the "Viewing Messages..." string.
 938  */
 939 function get_msgcnt_str($start_msg, $end_msg, $num_msgs) {
 940     /* Compute the $msg_cnt_str. */
 941     $result = '';
 942     if ($start_msg < $end_msg) {
 943         $result = sprintf(_("Viewing Messages: <B>%s</B> to <B>%s</B> (%s total)"),
 944                           $start_msg, $end_msg, $num_msgs);
 945     } else if ($start_msg == $end_msg) {
 946         $result = sprintf(_("Viewing Message: <B>%s</B> (1 total)"), $start_msg);
 947     } else {
 948         $result = '<br>';
 949     }
 950     /* Return our result string. */
 951     return ($result);
 952 }
 953
 954 /*
 955  * Generate a paginator link.
 956  */
 957 function get_paginator_link($box, $start_msg, $use, $text) {
 958     global $PHP_SELF;
 959
 960     $result = "<A HREF=\"right_main.php?use_mailbox_cache=$use"
 961             . "&amp;startMessage=$start_msg&amp;mailbox=$box\" "
 962             . "TARGET=\"right\">$text</A>";
 963     return ($result);
 964 /*
 965     if (preg_match('/^(.+)\?.+$/',$PHP_SELF,$regs)) {
 966         $source_url = $regs[1];
 967     } else {
 968         $source_url = $PHP_SELF;
 969     }
 970
 971     $result = '<A HREF="'. $source_url . "?use_mailbox_cache=$use"
 972             . "&amp;startMessage=$start_msg&amp;mailbox=$box\" "
 973             . "TARGET=\"right\">$text</A>";
 974     return ($result);
 975 */
 976 }
 977
 978 /*
 979  * This function computes the paginator string.
 980  */
 981 function get_paginator_str($box, $start_msg, $end_msg, $num_msgs,
 982                            $show_num, $sort) {
 983     global $username, $data_dir, $use_mailbox_cache, $color, $PG_SHOWNUM;
 984
 985     /* Initialize paginator string chunks. */
 986     $prv_str = '';
 987     $nxt_str = '';
 988     $pg_str  = '';
 989     $all_str = '';
 990     $tgl_str = '';
 991
 992     $box = urlencode($box);
 993
 994     /* Create simple strings that will be creating the paginator. */
 995     $spc = '&nbsp;';     /* This will be used as a space. */
 996     $sep = '|';          /* This will be used as a seperator. */
 997
 998     /* Get some paginator preference values. */
 999     $pg_sel = getPref($data_dir, $username, 'page_selector', SMPREF_ON);
1000     $pg_max = getPref($data_dir, $username, 'page_selector_max', PG_SEL_MAX);
1001
1002     /* Make sure that our start message number is not too big. */
1003     $start_msg = min($start_msg, $num_msgs);
1004
1005     /* Decide whether or not we will use the mailbox cache. */
1006     /* Not sure why $use_mailbox_cache is even passed in.   */
1007     if ($sort == 6) {
1008         $use = 0;
1009     } else {
1010         $use = 1;
1011     }
1012
1013     /* Compute the starting message of the previous and next page group. */
1014     $next_grp = $start_msg + $show_num;
1015     $prev_grp = $start_msg - $show_num;
1016
1017     /* Compute the basic previous and next strings. */
1018     if (($next_grp <= $num_msgs) && ($prev_grp >= 0)) {
1019         $prv_str = get_paginator_link($box, $prev_grp, $use, _("Previous"));
1020         $nxt_str = get_paginator_link($box, $next_grp, $use, _("Next"));
1021     } else if (($next_grp > $num_msgs) && ($prev_grp >= 0)) {
1022         $prv_str = get_paginator_link($box, $prev_grp, $use, _("Previous"));
1023         $nxt_str = "<FONT COLOR=\"$color[9]\">"._("Next")."</FONT>\n";
1024     } else if (($next_grp <= $num_msgs) && ($prev_grp < 0)) {
1025         $prv_str = "<FONT COLOR=\"$color[9]\">"._("Previous") . '</FONT>';
1026         $nxt_str = get_paginator_link($box, $next_grp, $use, _("Next"));
1027     }
1028
1029     /* Page selector block. Following code computes page links. */
1030     if ($pg_sel && ($num_msgs > $show_num)) {
1031         /* Most importantly, what is the current page!!! */
1032         $cur_pg = intval($start_msg / $show_num) + 1;
1033
1034         /* Compute total # of pages and # of paginator page links. */
1035         $tot_pgs = ceil($num_msgs / $show_num);  /* Total number of Pages */
1036         $vis_pgs = min($pg_max, $tot_pgs - 1);   /* Visible Pages    */
1037
1038         /* Compute the size of the four quarters of the page links. */
1039
1040         /* If we can, just show all the pages. */
1041         if (($tot_pgs - 1) <= $pg_max) {
1042             $q1_pgs = $cur_pg - 1;
1043             $q2_pgs = $q3_pgs = 0;
1044             $q4_pgs = $tot_pgs - $cur_pg;
1045
1046         /* Otherwise, compute some magic to choose the four quarters. */
1047         } else {
1048             /*
1049              * Compute the magic base values. Added together,
1050              * these values will always equal to the $pag_pgs.
1051              * NOTE: These are DEFAULT values and do not take
1052              * the current page into account. That is below.
1053              */
1054             $q1_pgs = floor($vis_pgs/4);
1055             $q2_pgs = round($vis_pgs/4, 0);
1056             $q3_pgs = ceil($vis_pgs/4);
1057             $q4_pgs = round(($vis_pgs - $q2_pgs)/3, 0);
1058
1059             /* Adjust if the first quarter contains the current page. */
1060             if (($cur_pg - $q1_pgs) < 1) {
1061                 $extra_pgs = ($q1_pgs - ($cur_pg - 1)) + $q2_pgs;
1062                 $q1_pgs = $cur_pg - 1;
1063                 $q2_pgs = 0;
1064                 $q3_pgs += ceil($extra_pgs / 2);
1065                 $q4_pgs += floor($extra_pgs / 2);
1066
1067             /* Adjust if the first and second quarters intersect. */
1068             } else if (($cur_pg - $q2_pgs - ceil($q2_pgs/3)) <= $q1_pgs) {
1069                 $extra_pgs = $q2_pgs;
1070                 $extra_pgs -= ceil(($cur_pg - $q1_pgs - 1) * 0.75);
1071                 $q2_pgs = ceil(($cur_pg - $q1_pgs - 1) * 0.75);
1072                 $q3_pgs += ceil($extra_pgs / 2);
1073                 $q4_pgs += floor($extra_pgs / 2);
1074
1075             /* Adjust if the fourth quarter contains the current page. */
1076             } else if (($cur_pg + $q4_pgs) >= $tot_pgs) {
1077                 $extra_pgs = ($q4_pgs - ($tot_pgs - $cur_pg)) + $q3_pgs;
1078                 $q3_pgs = 0;
1079                 $q4_pgs = $tot_pgs - $cur_pg;
1080                 $q1_pgs += floor($extra_pgs / 2);
1081                 $q2_pgs += ceil($extra_pgs / 2);
1082
1083             /* Adjust if the third and fourth quarter intersect. */
1084             } else if (($cur_pg + $q3_pgs + 1) >= ($tot_pgs - $q4_pgs + 1)) {
1085                 $extra_pgs = $q3_pgs;
1086                 $extra_pgs -= ceil(($tot_pgs - $cur_pg - $q4_pgs) * 0.75);
1087                 $q3_pgs = ceil(($tot_pgs - $cur_pg - $q4_pgs) * 0.75);
1088                 $q1_pgs += floor($extra_pgs / 2);
1089                 $q2_pgs += ceil($extra_pgs / 2);
1090             }
1091         }
1092
1093         /*
1094          * I am leaving this debug code here, commented out, because
1095          * it is a really nice way to see what the above code is doing.
1096          * echo "qts =  $q1_pgs/$q2_pgs/$q3_pgs/$q4_pgs = "
1097          *    . ($q1_pgs + $q2_pgs + $q3_pgs + $q4_pgs) . '<br>';
1098          */
1099
1100         /* Print out the page links from the compute page quarters. */
1101
1102         /* Start with the first quarter. */
1103         if (($q1_pgs == 0) && ($cur_pg > 1)) {
1104             $pg_str .= "...$spc";
1105         } else {
1106             for ($pg = 1; $pg <= $q1_pgs; ++$pg) {
1107                 $start = (($pg-1) * $show_num) + 1;
1108                 $pg_str .= get_paginator_link($box, $start, $use, $pg) . $spc;
1109             }
1110             if ($cur_pg - $q2_pgs - $q1_pgs > 1) {
1111                 $pg_str .= "...$spc";
1112             }
1113         }
1114
1115         /* Continue with the second quarter. */
1116         for ($pg = $cur_pg - $q2_pgs; $pg < $cur_pg; ++$pg) {
1117             $start = (($pg-1) * $show_num) + 1;
1118             $pg_str .= get_paginator_link($box, $start, $use, $pg) . $spc;
1119         }
1120
1121         /* Now print the current page. */
1122         $pg_str .= $cur_pg . $spc;
1123
1124         /* Next comes the third quarter. */
1125         for ($pg = $cur_pg + 1; $pg <= $cur_pg + $q3_pgs; ++$pg) {
1126             $start = (($pg-1) * $show_num) + 1;
1127             $pg_str .= get_paginator_link($box, $start, $use, $pg) . $spc;
1128         }
1129
1130         /* And last, print the forth quarter page links. */
1131         if (($q4_pgs == 0) && ($cur_pg < $tot_pgs)) {
1132             $pg_str .= "...$spc";
1133         } else {
1134             if (($tot_pgs - $q4_pgs) > ($cur_pg + $q3_pgs)) {
1135                 $pg_str .= "...$spc";
1136             }
1137             for ($pg = $tot_pgs - $q4_pgs + 1; $pg <= $tot_pgs; ++$pg) {
1138                 $start = (($pg-1) * $show_num) + 1;
1139                 $pg_str .= get_paginator_link($box, $start, $use, $pg) . $spc;
1140             }
1141         }
1142     } else if ($PG_SHOWNUM == 999999) {
1143         $pg_str = "<A HREF=\"right_main.php?PG_SHOWALL=0"
1144                 . "&amp;use_mailbox_cache=$use&amp;startMessage=1&amp;mailbox=$box\" "
1145                 . "TARGET=\"right\">" ._("Paginate") . '</A>' . $spc;
1146     }
1147
1148     /* If necessary, compute the 'show all' string. */
1149     if (($prv_str != '') || ($nxt_str != '')) {
1150         $all_str = "<A HREF=\"right_main.php?PG_SHOWALL=1"
1151                  . "&amp;use_mailbox_cache=$use&amp;startMessage=1&amp;mailbox=$box\" "
1152                  . "TARGET=\"right\">" . _("Show All") . '</A>';
1153     }
1154
1155     /* Last but not least, get the value for the toggle all link. */
1156     $tgl_str = get_selectall_link($start_msg, $sort);
1157
1158     /* Put all the pieces of the paginator string together. */
1159     /**
1160      * Hairy code... But let's leave it like it is since I am not certain
1161      * a different approach would be any easier to read. ;)
1162      */
1163     $result = '';
1164     $result .= ($prv_str != '' ? $prv_str . $spc . $sep . $spc : '');
1165     $result .= ($nxt_str != '' ? $nxt_str . $spc . $sep . $spc : '');
1166     $result .= ($pg_str  != '' ? $pg_str : '');
1167     $result .= ($all_str != '' ? $sep . $spc . $all_str . $spc : '');
1168     $result .= ($result  != '' ? $sep . $spc . $tgl_str: $tgl_str);
1169
1170     /* If the resulting string is blank, return a non-breaking space. */
1171     if ($result == '') {
1172         $result = '&nbsp;';
1173     }
1174
1175     /* Return our final magical paginator string. */
1176     return ($result);
1177 }
1178
1179 function processSubject($subject, $threadlevel = 0) {
1180     global $languages, $squirrelmail_language;
1181     /* Shouldn't ever happen -- caught too many times in the IMAP functions */
1182     if ($subject == '')
1183         return _("(no subject)");
1184
1185     $trim_at = 55;
1186
1187     /* if this is threaded, subtract two chars per indentlevel */
1188     if($threadlevel > 0 && $threadlevel <= 10)
1189         $trim_at -= (2*$threadlevel);
1190
1191     if (strlen($subject) <= $trim_at)
1192         return $subject;
1193
1194     $ent_strlen = $orig_len = strlen($subject);
1195     $trim_val = $trim_at - 5;
1196     $ent_offset = 0;
1197     /*
1198      * see if this is entities-encoded string
1199      * If so, Iterate through the whole string, find out
1200      * the real number of characters, and if more
1201      * than 55, substr with an updated trim value.
1202      */
1203     $step = $ent_loc = 0;
1204     while ( $ent_loc < $trim_val && (($ent_loc = strpos($subject, '&', $ent_offset)) !== false) &&
1205             (($ent_loc_end = strpos($subject, ';', $ent_loc+3)) !== false) ) {
1206         $trim_val += ($ent_loc_end-$ent_loc);
1207         $ent_offset  = $ent_loc_end+1;
1208         ++$step;
1209     }
1210
1211     if (($trim_val > 50) && (strlen($subject) > ($trim_val))&& (strpos($subject,';',$trim_val) < ($trim_val +6))) {
1212         $i = strpos($subject,';',$trim_val);
1213         if ($i) {
1214             $trim_val = strpos($subject,';',$trim_val);
1215         }
1216     }
1217     if ($ent_strlen <= $trim_at){
1218         return $subject;
1219     }
1220
1221     if (isset($languages[$squirrelmail_language]['XTRA_CODE']) &&
1222         function_exists($languages[$squirrelmail_language]['XTRA_CODE'])) {
1223         return $languages[$squirrelmail_language]['XTRA_CODE']('strimwidth', $subject, $trim_val);
1224     }
1225     return substr($subject, 0, $trim_val) . '...';
1226 }
1227
1228 function getMbxList($imapConnection) {
1229     global $lastTargetMailbox;
1230     echo  '         <small>&nbsp;<tt><select name="targetMailbox">';
1231     echo sqimap_mailbox_option_list($imapConnection, array(strtolower($lastTargetMailbox)) );
1232     echo '         </SELECT></TT>&nbsp;';
1233 }
1234
1235 function getButton($type, $name, $value) {
1236     return '<INPUT TYPE="'.$type.'" NAME="'.$name.'" VALUE="'.$value . '">';
1237 }
1238
1239 function getSmallStringCell($string, $align) {
1240     return html_tag('td',
1241                     '<small>' . $string . ':&nbsp; </small>',
1242                     $align,
1243                     '',
1244                     'nowrap' );
1245 }
1246
1247 function getEndMessage($start_msg, $show_num, $num_msgs) {
1248     if ($start_msg + ($show_num - 1) < $num_msgs){
1249         $end_msg = $start_msg + ($show_num - 1);
1250     } else {
1251         $end_msg = $num_msgs;
1252     }
1253
1254     if ($end_msg < $start_msg) {
1255         $start_msg = $start_msg - $show_num;
1256         if ($start_msg < 1) {
1257             $start_msg = 1;
1258         }
1259     }
1260     return (array($start_msg,$end_msg));
1261 }
1262
1263 function handleAsSent($mailbox) {
1264     global $handleAsSent_result;
1265
1266     /* First check if this is the sent or draft folder. */
1267     $handleAsSent_result = isSentMailbox($mailbox) || isDraftMailbox($mailbox);
1268
1269     /* Then check the result of the handleAsSent hook. */
1270     do_hook('check_handleAsSent_result', $mailbox);
1271
1272     /* And return the result. */
1273     return $handleAsSent_result;
1274 }
1275
1276 ?>