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