src/download.php

   1 <?php
   2
   3 /**
   4  * download.php
   5  *
   6  * Copyright (c) 1999-2002 The SquirrelMail Project Team
   7  * Licensed under the GNU GPL. For full terms see the file COPYING.
   8  *
   9  * Handles attachment downloads to the users computer.
  10  * Also allows displaying of attachments when possible.
  11  *
  12  * $Id$
  13  */
  14
  15 require_once('../src/validate.php');
  16 require_once('../functions/imap.php');
  17 require_once('../functions/mime.php');
  18
  19 header('Pragma: ');
  20 header('Cache-Control: cache');
  21
  22 function get_extract_to_target_list($imapConnection) {
  23     $boxes = sqimap_mailbox_list($imapConnection);
  24     for ($i = 0; $i < count($boxes); $i++) {
  25         if (!in_array('noselect', $boxes[$i]['flags'])) {
  26             $box = $boxes[$i]['unformatted'];
  27             $box2 = str_replace(' ', '&nbsp;', $boxes[$i]['unformatted-disp']);
  28             if ( $box2 == 'INBOX' ) {
  29                 $box2 = _("INBOX");
  30             }
  31             echo "<option value=\"$box\">$box2</option>\n";
  32         }
  33     }
  34 }
  35 $mailbox = decodeHeader($mailbox);
  36
  37 global $messages, $uid_support;
  38
  39 $imapConnection = sqimap_login($username, $key, $imapServerAddress, $imapPort, 0);
  40 $mbx_response =  sqimap_mailbox_select($imapConnection, $mailbox);
  41 if (!isset($passed_ent_id)) {
  42    $passed_ent_id = '';
  43 }
  44
  45 $message = &$messages[$mbx_response['UIDVALIDITY']]["$passed_id"];
  46 if (!is_object($message)) {
  47     $message = sqimap_get_message($imapConnection,$passed_id, $mailbox);
  48 }
  49 $subject = $message->rfc822_header->subject;
  50 $message = &$message->getEntity($ent_id);
  51 $header = $message->header;
  52 if ($message->rfc822_header) {
  53    $subject = $message->rfc822_header->subject;
  54    $charset = $header->content_type->properties['charset'];
  55 } else {
  56    $header = $message->header;
  57    $charset = $header->getParameter('charset');
  58 }
  59 $type0 = $header->type0;
  60 $type1 = $header->type1;
  61 $encoding = strtolower($header->encoding);
  62
  63 /*
  64 $extracted = false;
  65 if (isset($extract_message) && $extract_message) {
  66   $cmd = "FETCH $passed_id BODY[$passed_ent_id]";
  67   $read = sqimap_run_command ($imapConnection, $cmd, true, $response, $message, $uid_support);
  68   $cnt = count($read);
  69   $body = '';
  70   $length = 0;
  71   for ($i=1;$i<$cnt;$i++) {
  72       $length = $length + strlen($read[$i]);
  73       $body .= $read[$i];
  74   }
  75   if (isset($targetMailbox) && $length>0) {
  76       sqimap_append ($imapConnection, $targetMailbox, $length);
  77       fputs($imapConnection,$body);
  78       sqimap_append_done ($imapConnection);
  79       $extracted = true;
  80   }
  81 }
  82
  83
  84 */
  85 /*
  86  * lets redefine message as this particular entity that we wish to display.
  87  * it should hold only the header for this entity.  We need to fetch the body
  88  * yet before we can display anything.
  89  */
  90
  91 if (isset($override_type0)) {
  92     $type0 = $override_type0;
  93 }
  94 if (isset($override_type1)) {
  95     $type1 = $override_type1;
  96 }
  97 $filename = '';
  98 if (is_object($message->header->disposition)) {
  99     $filename = decodeHeader($header->disposition->getProperty('filename'));
 100     if (!$filename) {
 101         $filename = decodeHeader($header->disposition->getProperty('name'));
 102     }
 103 }
 104 if (strlen($filename) < 1) {
 105     if ($type1 == 'plain' && $type0 == 'text') {
 106         $suffix = 'txt';
 107         $filename = $subject . '.txt';
 108     } else if ($type1 == 'richtext' && $type0 == 'text') {
 109         $suffix = 'rtf';
 110         $filename = $subject . '.rtf';
 111     } else if ($type1 == 'postscript' && $type0 == 'application') {
 112         $suffix = 'ps';
 113         $filename = $subject . '.ps';
 114     } else if ($type1 == 'rfc822' && $type0 == 'message') {
 115         $suffix = 'eml';
 116         $filename = $subject . '.msg';
 117     } else {
 118         $suffix = $type1;
 119     }
 120
 121     if (strlen($filename) < 1) {
 122        $filename = "untitled$ent_id.$suffix";
 123     } else {
 124        $filename = "$filename.$suffix";
 125     }
 126 }
 127
 128 /*
 129  * Note:
 130  *    The following sections display the attachment in different
 131  *    ways depending on how they choose.  The first way will download
 132  *    under any circumstance.  This sets the Content-type to be
 133  *    applicatin/octet-stream, which should be interpreted by the
 134  *    browser as "download me".
 135  *      The second method (view) is used for images or other formats
 136  *    that should be able to be handled by the browser.  It will
 137  *    most likely display the attachment inline inside the browser.
 138  *      And finally, the third one will be used by default.  If it
 139  *    is displayable (text or html), it will load them up in a text
 140  *    viewer (built in to squirrelmail).  Otherwise, it sets the
 141  *    content-type as application/octet-stream
 142  */
 143 if (isset($absolute_dl) && $absolute_dl == 'true') {
 144     DumpHeaders($type0, $type1, $filename, 1);
 145 } else {
 146     DumpHeaders($type0, $type1, $filename, 0);
 147 }
 148 /* be aware that any warning caused by download.php will corrupt the
 149  * attachment in case of ERROR reporting = E_ALL and the output is the screen */
 150 mime_print_body_lines ($imapConnection, $passed_id, $ent_id, $encoding);
 151
 152 /*
 153  * This function is verified to work with Netscape and the *very latest*
 154  * version of IE.  I don't know if it works with Opera, but it should now.
 155  */
 156 function DumpHeaders($type0, $type1, $filename, $force) {
 157     global $HTTP_USER_AGENT, $languages, $squirrelmail_language;
 158     $isIE = 0;
 159
 160     if (strstr($HTTP_USER_AGENT, 'compatible; MSIE ') !== false &&
 161         strstr($HTTP_USER_AGENT, 'Opera') === false) {
 162         $isIE = 1;
 163     }
 164
 165     if (strstr($HTTP_USER_AGENT, 'compatible; MSIE 6') !== false &&
 166         strstr($HTTP_USER_AGENT, 'Opera') === false) {
 167         $isIE6 = 1;
 168     }
 169
 170     if (isset($languages[$squirrelmail_language]['XTRA_CODE']) &&
 171         function_exists($languages[$squirrelmail_language]['XTRA_CODE'])) {
 172         $filename =
 173             $languages[$squirrelmail_language]['XTRA_CODE']('downloadfilename', $filename, $HTTP_USER_AGENT);
 174     } else {
 175        $filename = ereg_replace('[^-a-zA-Z0-9\.]', '_', $filename);
 176     }
 177
 178     // A Pox on Microsoft and it's Office!
 179     if (! $force) {
 180         // Try to show in browser window
 181         header("Content-Disposition: inline; filename=\"$filename\"");
 182         header("Content-Type: $type0/$type1; name=\"$filename\"");
 183     } else {
 184         // Try to pop up the "save as" box
 185         // IE makes this hard.  It pops up 2 save boxes, or none.
 186         // http://support.microsoft.com/support/kb/articles/Q238/5/88.ASP
 187         // But, accordint to Microsoft, it is "RFC compliant but doesn't
 188         // take into account some deviations that allowed within the
 189         // specification."  Doesn't that mean RFC non-compliant?
 190         // http://support.microsoft.com/support/kb/articles/Q258/4/52.ASP
 191         //
 192         // The best thing you can do for IE is to upgrade to the latest
 193         // version
 194         if ($isIE && !isset($isIE6)) {
 195             // http://support.microsoft.com/support/kb/articles/Q182/3/15.asp
 196             // Do not have quotes around filename, but that applied to
 197             // "attachment"... does it apply to inline too?
 198             //
 199             // This combination seems to work mostly.  IE 5.5 SP 1 has
 200             // known issues (see the Microsoft Knowledge Base)
 201             header("Content-Disposition: inline; filename=$filename");
 202
 203             // This works for most types, but doesn't work with Word files
 204             header("Content-Type: application/download; name=\"$filename\"");
 205
 206             // These are spares, just in case.  :-)
 207             //header("Content-Type: $type0/$type1; name=\"$filename\"");
 208             //header("Content-Type: application/x-msdownload; name=\"$filename\"");
 209             //header("Content-Type: application/octet-stream; name=\"$filename\"");
 210         } else {
 211             header("Content-Disposition: attachment; filename=\"$filename\"");
 212             // application/octet-stream forces download for Netscape
 213             header("Content-Type: application/octet-stream; name=\"$filename\"");
 214         }
 215     }
 216 }
 217 ?>