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 $message = &$message->getEntity($passed_ent_id);
  47
  48 $header = $message->header;
  49 $charset = $header->getParameter('charset');
  50 $type0 = $header->type0;
  51 $type1 = $header->type1;
  52 $encoding = strtolower($header->encoding);
  53
  54 /*
  55 $extracted = false;
  56 if (isset($extract_message) && $extract_message) {
  57   $cmd = "FETCH $passed_id BODY[$passed_ent_id]";
  58   $read = sqimap_run_command ($imapConnection, $cmd, true, $response, $message, $uid_support);
  59   $cnt = count($read);
  60   $body = '';
  61   $length = 0;
  62   for ($i=1;$i<$cnt;$i++) {
  63       $length = $length + strlen($read[$i]);
  64       $body .= $read[$i];
  65   }
  66   if (isset($targetMailbox) && $length>0) {
  67       sqimap_append ($imapConnection, $targetMailbox, $length);
  68       fputs($imapConnection,$body);
  69       sqimap_append_done ($imapConnection);
  70       $extracted = true;
  71   }
  72 }
  73
  74
  75 */
  76 /*
  77  * lets redefine message as this particular entity that we wish to display.
  78  * it should hold only the header for this entity.  We need to fetch the body
  79  * yet before we can display anything.
  80  */
  81
  82 if (isset($override_type0)) {
  83     $type0 = $override_type0;
  84 }
  85 if (isset($override_type1)) {
  86     $type1 = $override_type1;
  87 }
  88
  89 $filename = decodeHeader($message->header->getParameter('filename'));
  90
  91 if (!$filename) {
  92     $filename = decodeHeader($message->header->getParameter('name'));
  93 }
  94
  95 if (strlen($filename) < 1) {
  96     if ($type1 == 'plain' && $type0 == 'text') {
  97         $suffix = 'txt';
  98         $filename = $header->subject . '.txt';
  99     } else if ($type1 == 'richtext' && $type0 == 'text') {
 100         $suffix = 'rtf';
 101         $filename = $header->subject . '.rtf';
 102     } else if ($type1 == 'postscript' && $type0 == 'application') {
 103         $suffix = 'ps';
 104         $filename = $header->subject . '.ps';
 105     } else if ($type1 == 'rfc822' && $type0 == 'message') {
 106         $suffix = 'eml';
 107         $filename = $header->subject . '.msg';
 108     } else {
 109         $suffix = $type1;
 110     }
 111
 112     if (strlen($filename) < 1) {
 113     $filename = "untitled$passed_ent_id.$suffix";
 114     } else {
 115     $filename = "$filename.$suffix";
 116     }
 117 }
 118
 119 /*
 120  * Note:
 121  *    The following sections display the attachment in different
 122  *    ways depending on how they choose.  The first way will download
 123  *    under any circumstance.  This sets the Content-type to be
 124  *    applicatin/octet-stream, which should be interpreted by the
 125  *    browser as "download me".
 126  *      The second method (view) is used for images or other formats
 127  *    that should be able to be handled by the browser.  It will
 128  *    most likely display the attachment inline inside the browser.
 129  *      And finally, the third one will be used by default.  If it
 130  *    is displayable (text or html), it will load them up in a text
 131  *    viewer (built in to squirrelmail).  Otherwise, it sets the
 132  *    content-type as application/octet-stream
 133  */
 134 if (isset($absolute_dl) && $absolute_dl == 'true') {
 135     DumpHeaders($type0, $type1, $filename, 1);
 136 } else {
 137     DumpHeaders($type0, $type1, $filename, 0);
 138 }
 139 /* be aware that any warning caused by download.php will corrupt the
 140  * attachment in case of ERROR reporting = E_ALL and the output is the screen */
 141 mime_print_body_lines ($imapConnection, $passed_id, $passed_ent_id, $encoding);
 142
 143 /*
 144 $message = &$message->getEntity('');
 145 $messages[$mbx_response['UIDVALIDITY']]["$passed_id"] = &$message;
 146 */
 147 /*
 148  * This function is verified to work with Netscape and the *very latest*
 149  * version of IE.  I don't know if it works with Opera, but it should now.
 150  */
 151 function DumpHeaders($type0, $type1, $filename, $force) {
 152     global $HTTP_USER_AGENT;
 153     $isIE = 0;
 154
 155     if (strstr($HTTP_USER_AGENT, 'compatible; MSIE ') !== false &&
 156         strstr($HTTP_USER_AGENT, 'Opera') === false) {
 157         $isIE = 1;
 158     }
 159
 160     if (strstr($HTTP_USER_AGENT, 'compatible; MSIE 6') !== false &&
 161         strstr($HTTP_USER_AGENT, 'Opera') === false) {
 162         $isIE6 = 1;
 163     }
 164
 165     $filename = ereg_replace('[^-a-zA-Z0-9\.]', '_', $filename);
 166
 167     // A Pox on Microsoft and it's Office!
 168     if (! $force) {
 169         // Try to show in browser window
 170         header("Content-Disposition: inline; filename=\"$filename\"");
 171         header("Content-Type: $type0/$type1; name=\"$filename\"");
 172     } else {
 173         // Try to pop up the "save as" box
 174         // IE makes this hard.  It pops up 2 save boxes, or none.
 175         // http://support.microsoft.com/support/kb/articles/Q238/5/88.ASP
 176         // But, accordint to Microsoft, it is "RFC compliant but doesn't
 177         // take into account some deviations that allowed within the
 178         // specification."  Doesn't that mean RFC non-compliant?
 179         // http://support.microsoft.com/support/kb/articles/Q258/4/52.ASP
 180         //
 181         // The best thing you can do for IE is to upgrade to the latest
 182         // version
 183         if ($isIE && !isset($isIE6)) {
 184             // http://support.microsoft.com/support/kb/articles/Q182/3/15.asp
 185             // Do not have quotes around filename, but that applied to
 186             // "attachment"... does it apply to inline too?
 187             //
 188             // This combination seems to work mostly.  IE 5.5 SP 1 has
 189             // known issues (see the Microsoft Knowledge Base)
 190             header("Content-Disposition: inline; filename=$filename");
 191
 192             // This works for most types, but doesn't work with Word files
 193             header("Content-Type: application/download; name=\"$filename\"");
 194
 195             // These are spares, just in case.  :-)
 196             //header("Content-Type: $type0/$type1; name=\"$filename\"");
 197             //header("Content-Type: application/x-msdownload; name=\"$filename\"");
 198             //header("Content-Type: application/octet-stream; name=\"$filename\"");
 199         } else {
 200             header("Content-Disposition: attachment; filename=\"$filename\"");
 201             // application/octet-stream forces download for Netscape
 202             header("Content-Type: application/octet-stream; name=\"$filename\"");
 203         }
 204     }
 205 }
 206 ?>