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    require_once('../src/validate.php');
  17    require_once('../functions/imap.php');
  18    require_once('../functions/mime.php');
  19    require_once('../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          $body = MagicHTML( $body, $id );
  52       } else {
  53          translateText($body, $wrap_at, $charset);
  54       }
  55
  56       flush();
  57       echo $body;
  58
  59       echo "</TT></TD></TR></TABLE>";
  60    }
  61
  62    $imapConnection = sqimap_login($username, $key, $imapServerAddress, $imapPort, 0);
  63    sqimap_mailbox_select($imapConnection, $mailbox);
  64
  65    // $message contains all information about the message
  66    // including header and body
  67    $message = sqimap_get_message($imapConnection, $passed_id, $mailbox);
  68    $top_header = $message->header;
  69
  70    // lets redefine message as this particular entity that we wish to display.
  71    // it should hold only the header for this entity.  We need to fetch the body
  72    // yet before we can display anything.
  73    $message = getEntity($message, $passed_ent_id);
  74
  75    $header = $message->header;
  76
  77    $charset = $header->charset;
  78    $type0 = $header->type0;
  79    $type1 = $header->type1;
  80    if (isset($override_type0))
  81        $type0 = $override_type0;
  82    if (isset($override_type1))
  83        $type1 = $override_type1;
  84    $filename = decodeHeader($header->filename);
  85    if (!$filename) {
  86       $filename = decodeHeader($header->name);
  87    }
  88
  89    if (strlen($filename) < 1) {
  90       if ($type1 == "plain" && $type0 == "text")                  $suffix = "txt";
  91       else if ($type1 == "richtext" && $type0 == "text")          $suffix = "rtf";
  92       else if ($type1 == "postscript" && $type0 == "application") $suffix = "ps";
  93       else if ($type1 == "message" && $type0 == "rfc822")         $suffix = "msg";
  94       else $suffix = $type1;
  95
  96       $filename = "untitled$passed_ent_id.$suffix";
  97    }
  98
  99    // Note:
 100    //    The following sections display the attachment in different
 101    //    ways depending on how they choose.  The first way will download
 102    //    under any circumstance.  This sets the Content-type to be
 103    //    applicatin/octet-stream, which should be interpreted by the
 104    //    browser as "download me".
 105    //      The second method (view) is used for images or other formats
 106    //    that should be able to be handled by the browser.  It will
 107    //    most likely display the attachment inline inside the browser.
 108    //      And finally, the third one will be used by default.  If it
 109    //    is displayable (text or html), it will load them up in a text
 110    //    viewer (built in to squirrelmail).  Otherwise, it sets the
 111    //    content-type as application/octet-stream
 112
 113    if (isset($absolute_dl) && $absolute_dl == "true") {
 114       switch($type0) {
 115          case "text":
 116             DumpHeaders($type0, $type1, $filename, 1);
 117             $body = mime_fetch_body($imapConnection, $passed_id, $passed_ent_id);
 118             $body = decodeBody($body, $header->encoding);
 119             if ($type1 == "plain" && isset($showHeaders)) {
 120                echo _("Subject") . ": " . decodeHeader($top_header->subject) . "\n";
 121                echo "   " . _("From") . ": " . decodeHeader($top_header->from) . "\n";
 122                echo "     " . _("To") . ": " . decodeHeader(getLineOfAddrs($top_header->to)) . "\n";
 123                echo "   " . _("Date") . ": " . getLongDateString($top_header->date) . "\n\n";
 124             }
 125             elseif ($type1 == "html" && isset($showHeaders)) {
 126                echo '<table><tr><th align=right>' . _("Subject");
 127                echo ':</th><td>' . decodeHeader($top_header->subject);
 128                echo "</td></tr>\n<tr><th align=right>" . _("From");
 129                echo ':</th><td>' . decodeHeader($top_header->from);
 130                echo "</td></tr>\n<tr><th align=right>" . _("To");
 131                echo ':</th><td>' . decodeHeader(getLineOfAddrs($top_header->to));
 132                echo "</td></tr>\n<tr><th align=right>" . _("Date");
 133                echo ':</th><td>' . getLongDateString($top_header->date);
 134                echo "</td></tr>\n</table>\n<hr>\n";
 135             }
 136             echo $body;
 137             break;
 138          default:
 139             DumpHeaders($type0, $type1, $filename, 1);
 140             mime_print_body_lines ($imapConnection, $passed_id, $passed_ent_id, $header->encoding);
 141             break;
 142       }
 143    } else {
 144       switch ($type0) {
 145          case "text":
 146             if ($type1 == "plain" || $type1 == "html") {
 147                 $body = mime_fetch_body($imapConnection, $passed_id, $passed_ent_id);
 148                 $body = decodeBody($body, $header->encoding);
 149                 viewText($color, $body, $passed_id, $passed_ent_id, $mailbox, $type1, $wrap_at);
 150             } else {
 151                 DumpHeaders($type0, $type1, $filename, 0);
 152                 $body = mime_fetch_body($imapConnection, $passed_id, $passed_ent_id);
 153                 $body = decodeBody($body, $header->encoding);
 154                 echo $body;
 155             }
 156             break;
 157          case "message":
 158             $body = mime_fetch_body($imapConnection, $passed_id, $passed_ent_id);
 159             $body = decodeBody($body, $header->encoding);
 160             viewText($color, $body, $passed_id, $passed_ent_id, $mailbox, $type1, $wrap_at);
 161             break;
 162          default:
 163             DumpHeaders($type0, $type1, $filename, 0);
 164             mime_print_body_lines ($imapConnection, $passed_id, $passed_ent_id, $header->encoding);
 165             break;
 166       }
 167    }
 168
 169
 170    // This function is verified to work with Netscape and the *very latest*
 171    // version of IE.  I don't know if it works with Opera, but it should now.
 172    function DumpHeaders($type0, $type1, $filename, $force)
 173    {
 174       global $HTTP_USER_AGENT;
 175
 176       $isIE = 0;
 177       if (strstr($HTTP_USER_AGENT, 'compatible; MSIE ') !== false &&
 178           strstr($HTTP_USER_AGENT, 'Opera') === false) {
 179         $isIE = 1;
 180       }
 181
 182       $filename = ereg_replace('[^-a-zA-Z0-9\.]', '_', $filename);
 183
 184       // A Pox on Microsoft and it's Office!
 185       if (! $force)
 186       {
 187           // Try to show in browser window
 188           header("Content-Disposition: inline; filename=\"$filename\"");
 189           header("Content-Type: $type0/$type1; name=\"$filename\"");
 190       }
 191       else
 192       {
 193           // Try to pop up the "save as" box
 194           // IE makes this hard.  It pops up 2 save boxes, or none.
 195           // http://support.microsoft.com/support/kb/articles/Q238/5/88.ASP
 196           // But, accordint to Microsoft, it is "RFC compliant but doesn't
 197           // take into account some deviations that allowed within the
 198           // specification."  Doesn't that mean RFC non-compliant?
 199           // http://support.microsoft.com/support/kb/articles/Q258/4/52.ASP
 200           //
 201           // The best thing you can do for IE is to upgrade to the latest
 202           // version
 203           if ($isIE) {
 204              // http://support.microsoft.com/support/kb/articles/Q182/3/15.asp
 205              // Do not have quotes around filename, but that applied to
 206              // "attachment"... does it apply to inline too?
 207              //
 208              // This combination seems to work mostly.  IE 5.5 SP 1 has
 209              // known issues (see the Microsoft Knowledge Base)
 210              header("Content-Disposition: inline; filename=$filename");
 211
 212              // This works for most types, but doesn't work with Word files
 213              header("Content-Type: application/download; name=\"$filename\"");
 214
 215              // These are spares, just in case.  :-)
 216              //header("Content-Type: $type0/$type1; name=\"$filename\"");
 217              //header("Content-Type: application/x-msdownload; name=\"$filename\"");
 218              //header("Content-Type: application/octet-stream; name=\"$filename\"");
 219           } else {
 220              header("Content-Disposition: attachment; filename=\"$filename\"");
 221              // application/octet-stream forces download for Netscape
 222              header("Content-Type: application/octet-stream; name=\"$filename\"");
 223           }
 224       }
 225    }
 226 ?>