src/download.php

   1 <?php
   2    /**
   3     **  download.php
   4     **
   5     **  Copyright (c) 1999-2000 The SquirrelMail development team
   6     **  Licensed under the GNU GPL. For full terms see the file COPYING.
   7     **
   8     **  Handles attachment downloads to the users computer.
   9     **  Also allows displaying of attachments when possible.
  10     **
  11     **  $Id$
  12     **/
  13
  14    define('download_php', true);  // Used for preferences
  15
  16    include('../src/validate.php');
  17    include("../functions/imap.php");
  18    include("../functions/mime.php");
  19    include("../functions/date.php");
  20
  21    header("Pragma: ");
  22    header("Cache-Control: cache");
  23
  24    function viewText($color, $body, $id, $entid, $mailbox, $type1, $wrap_at) {
  25       global $where, $what, $charset;
  26       global $startMessage;
  27
  28       displayPageHeader($color, "None");
  29
  30       echo "<BR><TABLE WIDTH=100% BORDER=0 CELLSPACING=0 CELLPADDING=2 ALIGN=CENTER><TR><TD BGCOLOR=\"$color[0]\">";
  31       echo "<B><CENTER>";
  32       echo _("Viewing a text attachment") . " - ";
  33       if ($where && $what) {
  34          // from a search
  35          echo "<a href=\"read_body.php?mailbox=".urlencode($mailbox)."&passed_id=$id&where=".urlencode($where)."&what=".urlencode($what)."\">". _("View message") . "</a>";
  36       } else {
  37          echo "<a href=\"read_body.php?mailbox=".urlencode($mailbox)."&passed_id=$id&startMessage=$startMessage&show_more=0\">". _("View message") . "</a>";
  38       }
  39
  40       $urlmailbox = urlencode($mailbox);
  41       echo "</b></td><tr><tr><td><CENTER><A HREF=\"../src/download.php?absolute_dl=true&passed_id=$id&passed_ent_id=$entid&mailbox=$urlmailbox\">";
  42       echo _("Download this as a file");
  43       echo "</A></CENTER><BR>";
  44       echo "</CENTER></B>";
  45       echo "</TD></TR></TABLE>";
  46
  47       echo "<TABLE WIDTH=98% BORDER=0 CELLSPACING=0 CELLPADDING=2 ALIGN=CENTER><TR><TD BGCOLOR=\"$color[0]\">";
  48       echo "<TR><TD BGCOLOR=\"$color[4]\"><TT>";
  49
  50       if ($type1 != "html")
  51          translateText($body, $wrap_at, $charset);
  52
  53       echo $body;
  54
  55       echo "</TT></TD></TR></TABLE>";
  56    }
  57
  58    $imapConnection = sqimap_login($username, $key, $imapServerAddress, $imapPort, 0);
  59    sqimap_mailbox_select($imapConnection, $mailbox);
  60
  61    // $message contains all information about the message
  62    // including header and body
  63    $message = sqimap_get_message($imapConnection, $passed_id, $mailbox);
  64    $top_header = $message->header;
  65
  66    // lets redefine message as this particular entity that we wish to display.
  67    // it should hold only the header for this entity.  We need to fetch the body
  68    // yet before we can display anything.
  69    $message = getEntity($message, $passed_ent_id);
  70
  71    $header = $message->header;
  72
  73    $charset = $header->charset;
  74    $type0 = $header->type0;
  75    $type1 = $header->type1;
  76    if (isset($override_type0))
  77        $type0 = $override_type0;
  78    if (isset($override_type1))
  79        $type1 = $override_type1;
  80    $filename = decodeHeader($header->filename);
  81    if (!$filename) {
  82       $filename = decodeHeader($header->name);
  83    }
  84
  85    if (strlen($filename) < 1) {
  86       if ($type1 == "plain" && $type0 == "text")                  $suffix = "txt";
  87       else if ($type1 == "richtext" && $type0 == "text")          $suffix = "rtf";
  88       else if ($type1 == "postscript" && $type0 == "application") $suffix = "ps";
  89       else if ($type1 == "message" && $type0 == "rfc822")         $suffix = "msg";
  90       else $suffix = $type1;
  91
  92       $filename = "untitled$passed_ent_id.$suffix";
  93    }
  94
  95    // Note:
  96    //    The following sections display the attachment in different
  97    //    ways depending on how they choose.  The first way will download
  98    //    under any circumstance.  This sets the Content-type to be
  99    //    applicatin/octet-stream, which should be interpreted by the
 100    //    browser as "download me".
 101    //      The second method (view) is used for images or other formats
 102    //    that should be able to be handled by the browser.  It will
 103    //    most likely display the attachment inline inside the browser.
 104    //      And finally, the third one will be used by default.  If it
 105    //    is displayable (text or html), it will load them up in a text
 106    //    viewer (built in to squirrelmail).  Otherwise, it sets the
 107    //    content-type as application/octet-stream
 108
 109    if (isset($absolute_dl) && $absolute_dl == "true") {
 110       switch($type0) {
 111          case "text":
 112             DumpHeaders($type0, $type1, $filename, 1);
 113             $body = mime_fetch_body($imapConnection, $passed_id, $passed_ent_id);
 114             $body = decodeBody($body, $header->encoding);
 115             if ($type1 == "plain" && isset($showHeaders)) {
 116                echo _("Subject") . ": " . decodeHeader($top_header->subject) . "\n";
 117                echo "   " . _("From") . ": " . decodeHeader($top_header->from) . "\n";
 118                echo "     " . _("To") . ": " . decodeHeader(getLineOfAddrs($top_header->to)) . "\n";
 119                echo "   " . _("Date") . ": " . getLongDateString($top_header->date) . "\n\n";
 120             }
 121             elseif ($type1 == "html" && isset($showHeaders)) {
 122                echo '<table><tr><th align=right>' . _("Subject");
 123                echo ':</th><td>' . decodeHeader($top_header->subject);
 124                echo "</td></tr>\n<tr><th align=right>" . _("From");
 125                echo ':</th><td>' . decodeHeader($top_header->from);
 126                echo "</td></tr>\n<tr><th align=right>" . _("To");
 127                echo ':</th><td>' . decodeHeader(getLineOfAddrs($top_header->to));
 128                echo "</td></tr>\n<tr><th align=right>" . _("Date");
 129                echo ':</th><td>' . getLongDateString($top_header->date);
 130                echo "</td></tr>\n</table>\n<hr>\n";
 131             }
 132             echo $body;
 133             break;
 134          default:
 135             DumpHeaders($type0, $type1, $filename, 1);
 136             mime_print_body_lines ($imapConnection, $passed_id, $passed_ent_id, $header->encoding);
 137             break;
 138       }
 139    } else {
 140       switch ($type0) {
 141          case "text":
 142             if ($type1 == "plain" || $type1 == "html") {
 143                 $body = mime_fetch_body($imapConnection, $passed_id, $passed_ent_id);
 144                 $body = decodeBody($body, $header->encoding);
 145                 viewText($color, $body, $passed_id, $passed_ent_id, $mailbox, $type1, $wrap_at);
 146             } else {
 147                 DumpHeaders($type0, $type1, $filename, 0);
 148                 $body = mime_fetch_body($imapConnection, $passed_id, $passed_ent_id);
 149                 $body = decodeBody($body, $header->encoding);
 150                 echo $body;
 151             }
 152             break;
 153          case "message":
 154             $body = mime_fetch_body($imapConnection, $passed_id, $passed_ent_id);
 155             $body = decodeBody($body, $header->encoding);
 156             viewText($color, $body, $passed_id, $passed_ent_id, $mailbox, $type1, $wrap_at);
 157             break;
 158          default:
 159             DumpHeaders($type0, $type1, $filename, 0);
 160             mime_print_body_lines ($imapConnection, $passed_id, $passed_ent_id, $header->encoding);
 161             break;
 162       }
 163    }
 164
 165
 166    // This function is verified to work with Netscape and the *very latest*
 167    // version of IE.  I don't know if it works with Opera, but it should now.
 168    function DumpHeaders($type0, $type1, $filename, $force)
 169    {
 170       global $HTTP_USER_AGENT;
 171
 172       $isIE = 0;
 173       if (strstr($HTTP_USER_AGENT, 'compatible; MSIE ') !== false &&
 174           strstr($HTTP_USER_AGENT, 'Opera') === false) {
 175         $isIE = 1;
 176       }
 177
 178       $filename = ereg_replace('[^-a-zA-Z0-9\.]', '_', $filename);
 179
 180       // A Pox on Microsoft and it's Office!
 181       if (! $force)
 182       {
 183           // Try to show in browser window
 184           header("Content-Disposition: inline; filename=\"$filename\"");
 185           header("Content-Type: $type0/$type1; name=\"$filename\"");
 186       }
 187       else
 188       {
 189           // Try to pop up the "save as" box
 190           // IE makes this hard.  It pops up 2 save boxes, or none.
 191           // http://support.microsoft.com/support/kb/articles/Q238/5/88.ASP
 192           // But, accordint to Microsoft, it is "RFC compliant but doesn't
 193           // take into account some deviations that allowed within the
 194           // specification."  Doesn't that mean RFC non-compliant?
 195           // http://support.microsoft.com/support/kb/articles/Q258/4/52.ASP
 196           //
 197           // The best thing you can do for IE is to upgrade to the latest
 198           // version
 199           if ($isIE) {
 200              // http://support.microsoft.com/support/kb/articles/Q182/3/15.asp
 201              // Do not have quotes around filename, but that applied to
 202              // "attachment"... does it apply to inline too?
 203              //
 204              // This combination seems to work mostly.  IE 5.5 SP 1 has
 205              // known issues (see the Microsoft Knowledge Base)
 206              header("Content-Disposition: inline; filename=$filename");
 207
 208              // This works for most types, but doesn't work with Word files
 209              header("Content-Type: application/download; name=\"$filename\"");
 210
 211              // These are spares, just in case.  :-)
 212              //header("Content-Type: $type0/$type1; name=\"$filename\"");
 213              //header("Content-Type: application/x-msdownload; name=\"$filename\"");
 214              //header("Content-Type: application/octet-stream; name=\"$filename\"");
 215           } else {
 216              header("Content-Disposition: attachment; filename=\"$filename\"");
 217              // application/octet-stream forces download for Netscape
 218              header("Content-Type: application/octet-stream; name=\"$filename\"");
 219           }
 220       }
 221    }
 222 ?>