[squirrelmail.git] / src / download.php

<?php

/**
 * download.php
 *
 * Copyright (c) 1999-2001 The Squirrelmail Development Team
 * Licensed under the GNU GPL. For full terms see the file COPYING.
 *
 * Handles attachment downloads to the users computer.
 * Also allows displaying of attachments when possible.
 *
 * $Id$
 */

/*****************************************************************/
/*** THIS FILE NEEDS TO HAVE ITS FORMATTING FIXED!!!           ***/
/*** PLEASE DO SO AND REMOVE THIS COMMENT SECTION.             ***/
/***    + Base level indent should begin at left margin, as    ***/
/***      the require_once below looks.                        ***/
/***    + All identation should consist of four space blocks   ***/
/***    + Tab characters are evil.                             ***/
/***    + all comments should use "slash-star ... star-slash"  ***/
/***      style -- no pound characters, no slash-slash style   ***/
/***    + FLOW CONTROL STATEMENTS (if, while, etc) SHOULD      ***/
/***      ALWAYS USE { AND } CHARACTERS!!!                     ***/
/***    + Please use ' instead of ", when possible. Note "     ***/
/***      should always be used in _( ) function calls.        ***/
/*** Thank you for your help making the SM code more readable. ***/
/*****************************************************************/

define('download_php', true);  // Used for preferences

require_once('../src/validate.php');
require_once('../functions/imap.php');
require_once('../functions/mime.php');
require_once('../functions/date.php');

   header("Pragma: ");
   header("Cache-Control: cache");

   function viewText($color, $body, $id, $entid, $mailbox, $type1, $wrap_at) {
      global $where, $what, $charset;
      global $startMessage;
      
      displayPageHeader($color, 'None');

      echo "<BR><TABLE WIDTH=100% BORDER=0 CELLSPACING=0 CELLPADDING=2 ALIGN=CENTER><TR><TD BGCOLOR=\"$color[0]\">";
      echo "<B><CENTER>";
      echo _("Viewing a text attachment") . " - ";
      if ($where && $what) {
         // from a search
         echo "<a href=\"read_body.php?mailbox=".urlencode($mailbox)."&passed_id=$id&where=".urlencode($where)."&what=".urlencode($what)."\">". _("View message") . "</a>";
      } else {   
         echo "<a href=\"read_body.php?mailbox=".urlencode($mailbox)."&passed_id=$id&startMessage=$startMessage&show_more=0\">". _("View message") . "</a>";
      }   

      $urlmailbox = urlencode($mailbox);
      echo "</b></td><tr><tr><td><CENTER><A HREF=\"../src/download.php?absolute_dl=true&passed_id=$id&passed_ent_id=$entid&mailbox=$urlmailbox\">";
      echo _("Download this as a file");
      echo "</A></CENTER><BR>";
      echo "</CENTER></B>";
      echo "</TD></TR></TABLE>";

      echo "<TABLE WIDTH=98% BORDER=0 CELLSPACING=0 CELLPADDING=2 ALIGN=CENTER><TR><TD BGCOLOR=\"$color[0]\">";
      echo "<TR><TD BGCOLOR=\"$color[4]\"><TT>";

      if ($type1 == 'html') {
         $body = MagicHTML( $body, $id );
      } else {
         translateText($body, $wrap_at, $charset);
      }
      
      flush();
      echo $body;

      echo "</TT></TD></TR></TABLE>";
   }

   $imapConnection = sqimap_login($username, $key, $imapServerAddress, $imapPort, 0);
   sqimap_mailbox_select($imapConnection, $mailbox);

   // $message contains all information about the message
   // including header and body
   $message = sqimap_get_message($imapConnection, $passed_id, $mailbox);
   $top_header = $message->header;

   // lets redefine message as this particular entity that we wish to display.
   // it should hold only the header for this entity.  We need to fetch the body
   // yet before we can display anything.
   $message = getEntity($message, $passed_ent_id);

   $header = $message->header;

   $charset = $header->charset;
   $type0 = $header->type0;
   $type1 = $header->type1;
   if (isset($override_type0))
       $type0 = $override_type0;
   if (isset($override_type1))
       $type1 = $override_type1;
   $filename = decodeHeader($header->filename);
   if (!$filename) {
      $filename = decodeHeader($header->name);
   }

   if (strlen($filename) < 1) {
      if ($type1 == "plain" && $type0 == "text")                  $suffix = "txt";
      else if ($type1 == "richtext" && $type0 == "text")          $suffix = "rtf";
      else if ($type1 == "postscript" && $type0 == "application") $suffix = "ps";
      else if ($type1 == "message" && $type0 == "rfc822")         $suffix = "msg";
      else $suffix = $type1;

      $filename = "untitled$passed_ent_id.$suffix";
   }

   // Note:
   //    The following sections display the attachment in different
   //    ways depending on how they choose.  The first way will download
   //    under any circumstance.  This sets the Content-type to be
   //    applicatin/octet-stream, which should be interpreted by the
   //    browser as "download me".
   //      The second method (view) is used for images or other formats
   //    that should be able to be handled by the browser.  It will
   //    most likely display the attachment inline inside the browser.
   //      And finally, the third one will be used by default.  If it
   //    is displayable (text or html), it will load them up in a text
   //    viewer (built in to squirrelmail).  Otherwise, it sets the
   //    content-type as application/octet-stream
   
   if (isset($absolute_dl) && $absolute_dl == "true") {
      switch($type0) {
         case "text":
	    DumpHeaders($type0, $type1, $filename, 1);
            $body = mime_fetch_body($imapConnection, $passed_id, $passed_ent_id);
            $body = decodeBody($body, $header->encoding);
            if ($type1 == "plain" && isset($showHeaders)) {
               echo _("Subject") . ": " . decodeHeader($top_header->subject) . "\n";
               echo "   " . _("From") . ": " . decodeHeader($top_header->from) . "\n";
               echo "     " . _("To") . ": " . decodeHeader(getLineOfAddrs($top_header->to)) . "\n";
               echo "   " . _("Date") . ": " . getLongDateString($top_header->date) . "\n\n";
            }
	    elseif ($type1 == "html" && isset($showHeaders)) {
	       echo '<table><tr><th align=right>' . _("Subject");
	       echo ':</th><td>' . decodeHeader($top_header->subject);
	       echo "</td></tr>\n<tr><th align=right>" . _("From");
	       echo ':</th><td>' . decodeHeader($top_header->from);
	       echo "</td></tr>\n<tr><th align=right>" . _("To");
	       echo ':</th><td>' . decodeHeader(getLineOfAddrs($top_header->to));
	       echo "</td></tr>\n<tr><th align=right>" . _("Date");
	       echo ':</th><td>' . getLongDateString($top_header->date);
	       echo "</td></tr>\n</table>\n<hr>\n";
	    }
            echo $body;
            break;
         default:
	    DumpHeaders($type0, $type1, $filename, 1);
            mime_print_body_lines ($imapConnection, $passed_id, $passed_ent_id, $header->encoding);
            break;
      }
   } else {
      switch ($type0) {
         case "text":
            if ($type1 == "plain" || $type1 == "html") {
                $body = mime_fetch_body($imapConnection, $passed_id, $passed_ent_id);
                $body = decodeBody($body, $header->encoding);
                viewText($color, $body, $passed_id, $passed_ent_id, $mailbox, $type1, $wrap_at);
            } else {
		DumpHeaders($type0, $type1, $filename, 0);
                $body = mime_fetch_body($imapConnection, $passed_id, $passed_ent_id);
                $body = decodeBody($body, $header->encoding);
                echo $body;
            }
            break;
         case "message":
            $body = mime_fetch_body($imapConnection, $passed_id, $passed_ent_id);
            $body = decodeBody($body, $header->encoding);
            viewText($color, $body, $passed_id, $passed_ent_id, $mailbox, $type1, $wrap_at);
            break;
         default:
	    DumpHeaders($type0, $type1, $filename, 0);
            mime_print_body_lines ($imapConnection, $passed_id, $passed_ent_id, $header->encoding);
            break;
      }
   }
   
   
   // This function is verified to work with Netscape and the *very latest*
   // version of IE.  I don't know if it works with Opera, but it should now.
   function DumpHeaders($type0, $type1, $filename, $force)
   {
      global $HTTP_USER_AGENT;
      
      $isIE = 0;
      if (strstr($HTTP_USER_AGENT, 'compatible; MSIE ') !== false &&
          strstr($HTTP_USER_AGENT, 'Opera') === false) {
        $isIE = 1;
      }
      
      $filename = ereg_replace('[^-a-zA-Z0-9\.]', '_', $filename);
      
      // A Pox on Microsoft and it's Office!
      if (! $force)
      {
          // Try to show in browser window
          header("Content-Disposition: inline; filename=\"$filename\"");
	  header("Content-Type: $type0/$type1; name=\"$filename\"");
      }
      else
      {
          // Try to pop up the "save as" box
	  // IE makes this hard.  It pops up 2 save boxes, or none.
	  // http://support.microsoft.com/support/kb/articles/Q238/5/88.ASP
	  // But, accordint to Microsoft, it is "RFC compliant but doesn't
	  // take into account some deviations that allowed within the
	  // specification."  Doesn't that mean RFC non-compliant?
	  // http://support.microsoft.com/support/kb/articles/Q258/4/52.ASP
	  //
	  // The best thing you can do for IE is to upgrade to the latest
	  // version
          if ($isIE) {
	     // http://support.microsoft.com/support/kb/articles/Q182/3/15.asp
	     // Do not have quotes around filename, but that applied to
	     // "attachment"... does it apply to inline too?
	     //
	     // This combination seems to work mostly.  IE 5.5 SP 1 has
	     // known issues (see the Microsoft Knowledge Base)
             header("Content-Disposition: inline; filename=$filename");
             
	     // This works for most types, but doesn't work with Word files
             header("Content-Type: application/download; name=\"$filename\"");

             // These are spares, just in case.  :-)
             //header("Content-Type: $type0/$type1; name=\"$filename\"");
             //header("Content-Type: application/x-msdownload; name=\"$filename\"");
             //header("Content-Type: application/octet-stream; name=\"$filename\"");
	  } else {
             header("Content-Disposition: attachment; filename=\"$filename\"");
	     // application/octet-stream forces download for Netscape
             header("Content-Type: application/octet-stream; name=\"$filename\"");
	  }
      }
   }
?>
Commit	Line	Data
59177427	1	<?php
895905c0	2
35586184	3	/**
	4	* download.php
	5	*
	6	* Copyright (c) 1999-2001 The Squirrelmail Development 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	/*****************************************************************/
	16	/* THIS FILE NEEDS TO HAVE ITS FORMATTING FIXED!!! */
	17	/* PLEASE DO SO AND REMOVE THIS COMMENT SECTION. */
	18	/* + Base level indent should begin at left margin, as */
	19	/* the require_once below looks. */
	20	/* + All identation should consist of four space blocks */
	21	/* + Tab characters are evil. */
	22	/* + all comments should use "slash-star ... star-slash" */
	23	/* style -- no pound characters, no slash-slash style */
	24	/* + FLOW CONTROL STATEMENTS (if, while, etc) SHOULD */
	25	/* ALWAYS USE { AND } CHARACTERS!!! */
	26	/* + Please use ' instead of ", when possible. Note " */
	27	/* should always be used in _( ) function calls. */
	28	/* Thank you for your help making the SM code more readable. */
	29	/*****************************************************************/
	30
	31	define('download_php', true); // Used for preferences
	32
	33	require_once('../src/validate.php');
	34	require_once('../functions/imap.php');
	35	require_once('../functions/mime.php');
	36	require_once('../functions/date.php');
6b96544a	37
bc104ef3	38	header("Pragma: ");
	39	header("Cache-Control: cache");
	40
11307a4c	41	function viewText($color, $body, $id, $entid, $mailbox, $type1, $wrap_at) {
8442ac08	42	global $where, $what, $charset;
a037624d	43	global $startMessage;
fdcca8d3	44
2d367c68	45	displayPageHeader($color, 'None');
7831268e	46
a037624d	47	echo "<BR><TABLE WIDTH=100% BORDER=0 CELLSPACING=0 CELLPADDING=2 ALIGN=CENTER><TR><TD BGCOLOR=\"$color[0]\">";
180c2c09	48	echo "<B><CENTER>";
aa8dcbd5	49	echo _("Viewing a text attachment") . " - ";
f4991a86	50	if ($where && $what) {
	51	// from a search
	52	echo "<a href=\"read_body.php?mailbox=".urlencode($mailbox)."&passed_id=$id&where=".urlencode($where)."&what=".urlencode($what)."\">". _("View message") . "</a>";
	53	} else {
	54	echo "<a href=\"read_body.php?mailbox=".urlencode($mailbox)."&passed_id=$id&startMessage=$startMessage&show_more=0\">". _("View message") . "</a>";
	55	}
a037624d	56
7831268e	57	$urlmailbox = urlencode($mailbox);
a037624d	58	echo "</b></td><tr><tr><td><CENTER><A HREF=\"../src/download.php?absolute_dl=true&passed_id=$id&passed_ent_id=$entid&mailbox=$urlmailbox\">";
180c2c09	59	echo _("Download this as a file");
a037624d	60	echo "</A></CENTER><BR>";
	61	echo "</CENTER></B>";
	62	echo "</TD></TR></TABLE>";
	63
	64	echo "<TABLE WIDTH=98% BORDER=0 CELLSPACING=0 CELLPADDING=2 ALIGN=CENTER><TR><TD BGCOLOR=\"$color[0]\">";
	65	echo "<TR><TD BGCOLOR=\"$color[4]\"><TT>";
	66
c6b144dd	67	if ($type1 == 'html') {
	68	$body = MagicHTML( $body, $id );
	69	} else {
9eea179c	70	translateText($body, $wrap_at, $charset);
c6b144dd	71	}
9eea179c	72
c6b144dd	73	flush();
9eea179c	74	echo $body;
0a4cf77a	75
7831268e	76	echo "</TT></TD></TR></TABLE>";
	77	}
	78
e1469126	79	$imapConnection = sqimap_login($username, $key, $imapServerAddress, $imapPort, 0);
813eba2f	80	sqimap_mailbox_select($imapConnection, $mailbox);
6b96544a	81
	82	// $message contains all information about the message
	83	// including header and body
813eba2f	84	$message = sqimap_get_message($imapConnection, $passed_id, $mailbox);
ca1a555e	85	$top_header = $message->header;
6b96544a	86
8beafbbc	87	// lets redefine message as this particular entity that we wish to display.
	88	// it should hold only the header for this entity. We need to fetch the body
	89	// yet before we can display anything.
	90	$message = getEntity($message, $passed_ent_id);
	91
	92	$header = $message->header;
8beafbbc	93
8442ac08	94	$charset = $header->charset;
8beafbbc	95	$type0 = $header->type0;
8beafbbc	96	$type1 = $header->type1;
0db847e1	97	if (isset($override_type0))
	98	$type0 = $override_type0;
	99	if (isset($override_type1))
	100	$type1 = $override_type1;
f9ab17bf	101	$filename = decodeHeader($header->filename);
66e1a00e	102	if (!$filename) {
	103	$filename = decodeHeader($header->name);
	104	}
6b96544a	105
7831268e	106	if (strlen($filename) < 1) {
e9f8ea4e	107	if ($type1 == "plain" && $type0 == "text") $suffix = "txt";
	108	else if ($type1 == "richtext" && $type0 == "text") $suffix = "rtf";
	109	else if ($type1 == "postscript" && $type0 == "application") $suffix = "ps";
	110	else if ($type1 == "message" && $type0 == "rfc822") $suffix = "msg";
	111	else $suffix = $type1;
	112
	113	$filename = "untitled$passed_ent_id.$suffix";
7831268e	114	}
6b96544a	115
c4809aca	116	// Note:
	117	// The following sections display the attachment in different
	118	// ways depending on how they choose. The first way will download
	119	// under any circumstance. This sets the Content-type to be
	120	// applicatin/octet-stream, which should be interpreted by the
	121	// browser as "download me".
	122	// The second method (view) is used for images or other formats
	123	// that should be able to be handled by the browser. It will
	124	// most likely display the attachment inline inside the browser.
	125	// And finally, the third one will be used by default. If it
	126	// is displayable (text or html), it will load them up in a text
	127	// viewer (built in to squirrelmail). Otherwise, it sets the
	128	// content-type as application/octet-stream
a7ea7540	129
61423189	130	if (isset($absolute_dl) && $absolute_dl == "true") {
7831268e	131	switch($type0) {
7831268e	132	case "text":
36294f1a	133	DumpHeaders($type0, $type1, $filename, 1);
beb9e459	134	$body = mime_fetch_body($imapConnection, $passed_id, $passed_ent_id);
8beafbbc	135	$body = decodeBody($body, $header->encoding);
a900c1e6	136	if ($type1 == "plain" && isset($showHeaders)) {
d51894be	137	echo _("Subject") . ": " . decodeHeader($top_header->subject) . "\n";
	138	echo " " . _("From") . ": " . decodeHeader($top_header->from) . "\n";
	139	echo " " . _("To") . ": " . decodeHeader(getLineOfAddrs($top_header->to)) . "\n";
ca1a555e	140	echo " " . _("Date") . ": " . getLongDateString($top_header->date) . "\n\n";
623332f3	141	}
a900c1e6	142	elseif ($type1 == "html" && isset($showHeaders)) {
	143	echo '<table><tr><th align=right>' . _("Subject");
	144	echo ':</th><td>' . decodeHeader($top_header->subject);
	145	echo "</td></tr>\n<tr><th align=right>" . _("From");
	146	echo ':</th><td>' . decodeHeader($top_header->from);
	147	echo "</td></tr>\n<tr><th align=right>" . _("To");
	148	echo ':</th><td>' . decodeHeader(getLineOfAddrs($top_header->to));
	149	echo "</td></tr>\n<tr><th align=right>" . _("Date");
	150	echo ':</th><td>' . getLongDateString($top_header->date);
	151	echo "</td></tr>\n</table>\n<hr>\n";
	152	}
36294f1a	153	echo $body;
7831268e	154	break;
7831268e	155	default:
36294f1a	156	DumpHeaders($type0, $type1, $filename, 1);
beb9e459	157	mime_print_body_lines ($imapConnection, $passed_id, $passed_ent_id, $header->encoding);
7831268e	158	break;
	159	}
	160	} else {
	161	switch ($type0) {
	162	case "text":
beb9e459	163	if ($type1 == "plain" \|\| $type1 == "html") {
	164	$body = mime_fetch_body($imapConnection, $passed_id, $passed_ent_id);
	165	$body = decodeBody($body, $header->encoding);
beb9e459	166	viewText($color, $body, $passed_id, $passed_ent_id, $mailbox, $type1, $wrap_at);
23a8095f	167	} else {
36294f1a	168	DumpHeaders($type0, $type1, $filename, 0);
beb9e459	169	$body = mime_fetch_body($imapConnection, $passed_id, $passed_ent_id);
beb9e459	170	$body = decodeBody($body, $header->encoding);
beb9e459	171	echo $body;
	172	}
	173	break;
7831268e	174	case "message":
beb9e459	175	$body = mime_fetch_body($imapConnection, $passed_id, $passed_ent_id);
8beafbbc	176	$body = decodeBody($body, $header->encoding);
11307a4c	177	viewText($color, $body, $passed_id, $passed_ent_id, $mailbox, $type1, $wrap_at);
7831268e	178	break;
7831268e	179	default:
36294f1a	180	DumpHeaders($type0, $type1, $filename, 0);
beb9e459	181	mime_print_body_lines ($imapConnection, $passed_id, $passed_ent_id, $header->encoding);
7831268e	182	break;
7831268e	183	}
36294f1a	184	}
	185
	186
2a0372ff	187	// This function is verified to work with Netscape and the very latest
2a0372ff	188	// version of IE. I don't know if it works with Opera, but it should now.
36294f1a	189	function DumpHeaders($type0, $type1, $filename, $force)
	190	{
	191	global $HTTP_USER_AGENT;
	192
	193	$isIE = 0;
2a0372ff	194	if (strstr($HTTP_USER_AGENT, 'compatible; MSIE ') !== false &&
2a0372ff	195	strstr($HTTP_USER_AGENT, 'Opera') === false) {
36294f1a	196	$isIE = 1;
	197	}
	198
	199	$filename = ereg_replace('[^-a-zA-Z0-9\.]', '_', $filename);
	200
	201	// A Pox on Microsoft and it's Office!
	202	if (! $force)
	203	{
	204	// Try to show in browser window
	205	header("Content-Disposition: inline; filename=\"$filename\"");
	206	header("Content-Type: $type0/$type1; name=\"$filename\"");
	207	}
	208	else
	209	{
	210	// Try to pop up the "save as" box
	211	// IE makes this hard. It pops up 2 save boxes, or none.
	212	// http://support.microsoft.com/support/kb/articles/Q238/5/88.ASP
	213	// But, accordint to Microsoft, it is "RFC compliant but doesn't
	214	// take into account some deviations that allowed within the
	215	// specification." Doesn't that mean RFC non-compliant?
	216	// http://support.microsoft.com/support/kb/articles/Q258/4/52.ASP
	217	//
	218	// The best thing you can do for IE is to upgrade to the latest
	219	// version
	220	if ($isIE) {
	221	// http://support.microsoft.com/support/kb/articles/Q182/3/15.asp
	222	// Do not have quotes around filename, but that applied to
	223	// "attachment"... does it apply to inline too?
	224	//
	225	// This combination seems to work mostly. IE 5.5 SP 1 has
	226	// known issues (see the Microsoft Knowledge Base)
	227	header("Content-Disposition: inline; filename=$filename");
	228
	229	// This works for most types, but doesn't work with Word files
	230	header("Content-Type: application/download; name=\"$filename\"");
	231
	232	// These are spares, just in case. :-)
	233	//header("Content-Type: $type0/$type1; name=\"$filename\"");
	234	//header("Content-Type: application/x-msdownload; name=\"$filename\"");
	235	//header("Content-Type: application/octet-stream; name=\"$filename\"");
	236	} else {
	237	header("Content-Disposition: attachment; filename=\"$filename\"");
	238	// application/octet-stream forces download for Netscape
	239	header("Content-Type: application/octet-stream; name=\"$filename\"");
	240	}
	241	}
	242	}
35586184	243	?>