[squirrelmail.git] / functions / imap_general.php

<?php

   /**
    *   imap.php
    *
    *   Copyright (c) 1999-2001 The Squirrelmail Development Team
    *   Licensed under the GNU GPL. For full terms see the file COPYING.
    *
    *   This implements all functions that do general imap functions.
    *
    *   $Id$
    */

    /**
    * Unique SessionId
    *
    * Sets an unique session id in order to avoid simultanous sessions crash.
    *
    * @return	string	a 4 chars unique string
    */
    function sqimap_session_id() {

        if (session_id() == '')
            global $RememberedSessionID;

            if (! isset($RememberedSessionID))
                $RememberedSessionID = GenerateRandomString(4, '', 7);
        else
            $RememberedSessionID = substr(session_id(), -4);

        return( $RememberedSessionID );
   }


   /******************************************************************************
    **  Reads the output from the IMAP stream.  If handle_errors is set to true,
    **  this will also handle all errors that are received.  If it is not set,
    **  the errors will be sent back through $response and $message
    ******************************************************************************/

   function sqimap_read_data_list ($imap_stream, $pre, $handle_errors,
                                   &$response, &$message) {
      global $color, $squirrelmail_language;

      $read = '';
      $resultlist = array();

      $more_msgs = true;
      while ($more_msgs) {
         $data = array();
         $total_size = 0;
         while (strpos($read, "\n") === false) {
            $read .= fgets($imap_stream, 9096);
         }

         if (ereg("^\\* [0-9]+ FETCH.*\\{([0-9]+)\\}", $read, $regs)) {
            $size = $regs[1];
         } else if (ereg("^\\* [0-9]+ FETCH", $read, $regs)) {
            // Sizeless response, probably single-line
            $size = -1;
            $data[] = $read;
            $read = fgets($imap_stream, 9096);
         } else {
            $size = -1;
         }
         while (1) {
            while (strpos($read, "\n") === false) {
               $read .= fgets($imap_stream, 9096);
            }
            // If we know the size, no need to look at the end parameters
            if ($size > 0) {
               if ($total_size == $size) {
                  // We've reached the end of this 'message', switch to the next one.
                  $data[] = $read;
                  break;
               } else if ($total_size > $size) {
                  $difference = $total_size - $size;
                  $total_size = $total_size - strlen($read);
                  $data[] = substr ($read, 0, strlen($read)-$difference);
                  $read = substr ($read, strlen($read)-$difference, strlen($read));
                  break;
               } else {
                  $data[] = $read;
                  $read = fgets($imap_stream, 9096);
                  while (strpos($read, "\n") === false) {
                      $read .= fgets($imap_stream, 9096);
                  }
               }
               $total_size += strlen($read);
            } else {
               if (ereg("^$pre (OK|BAD|NO)(.*)", $read, $regs) ||
                   (($size == -1) && ereg("^\\* [0-9]+ FETCH.*", $read, $regs))) {
                  break;
               } else {
                  $data[] = $read;
                  $read = fgets ($imap_stream, 9096);
               }
            }
         }

         while (($more_msgs = !ereg("^$pre (OK|BAD|NO)(.*)$", $read, $regs)) &&
                !ereg("^\\* [0-9]+ FETCH.*", $read, $regs)) {
            $read = fgets($imap_stream, 9096);
         }
         $resultlist[] = $data;
      }
      $response = $regs[1];
      $message = trim($regs[2]);
      
      if ($handle_errors == false) { return $resultlist; }
     
      if ($response == 'NO') {
         // ignore this error from m$ exchange, it is not fatal (aka bug)
         if (strstr($message, 'command resulted in') === false) {
            set_up_language($squirrelmail_language);
            echo "<br><b><font color=$color[2]>\n";
            echo _("ERROR : Could not complete request.");
            echo "</b><br>\n";
            echo _("Reason Given: ");
            echo $message . "</font><br>\n";
            exit;
         }
      } else if ($response == 'BAD') {
         set_up_language($squirrelmail_language);
         echo "<br><b><font color=$color[2]>\n";
         echo _("ERROR : Bad or malformed request.");
         echo "</b><br>\n";
         echo _("Server responded: ");
         echo $message . "</font><br>\n";
         exit;
      }
      return $resultlist;
   }

   function sqimap_read_data ($imap_stream, $pre, $handle_errors, &$response, &$message) {
        $res = sqimap_read_data_list($imap_stream, $pre, $handle_errors, $response, $message);
        return $res[0];
   }

   /******************************************************************************
    **  Logs the user into the imap server.  If $hide is set, no error messages
    **  will be displayed.  This function returns the imap connection handle.
    ******************************************************************************/
   function sqimap_login ($username, $password, $imap_server_address, $imap_port, $hide) {
      global $color, $squirrelmail_language, $HTTP_ACCEPT_LANGUAGE, $onetimepad;

      $imap_stream = fsockopen ($imap_server_address, $imap_port,
         $error_number, $error_string, 15);
      $server_info = fgets ($imap_stream, 1024);

      // Decrypt the password
      $password = OneTimePadDecrypt($password, $onetimepad);

      /** Do some error correction **/
      if (!$imap_stream) {
         if (!$hide) {
            set_up_language($squirrelmail_language, true);
            printf (_("Error connecting to IMAP server: %s.")."<br>\r\n", $imap_server_address);
            echo "$error_number : $error_string<br>\r\n";
         }
         exit;
      }

      fputs ($imap_stream, sqimap_session_id() . ' LOGIN "' . quoteIMAP($username) .
         '" "' . quoteIMAP($password) . "\"\r\n");
      $read = sqimap_read_data ($imap_stream, sqimap_session_id(), false, $response, $message);

      /** If the connection was not successful, lets see why **/
      if ($response != "OK") {
         if (!$hide) {
            if ($response != 'NO') {
               // "BAD" and anything else gets reported here.
               set_up_language($squirrelmail_language, true);
               if ($response == 'BAD')
                   printf (_("Bad request: %s")."<br>\r\n", $message);
               else
                   printf (_("Unknown error: %s") . "<br>\n", $message);
               echo '<br>';
               echo _("Read data:") . "<br>\n";
               if (is_array($read))
               {
                       foreach ($read as $line)
                       {
                           echo htmlspecialchars($line) . "<br>\n";
                        }
               }
               exit;
            } else {
               // If the user does not log in with the correct
               // username and password it is not possible to get the
               // correct locale from the user's preferences.
               // Therefore, apply the same hack as on the login
               // screen.

               // $squirrelmail_language is set by a cookie when
               // the user selects language and logs out

               set_up_language($squirrelmail_language, true);

               ?>
                  <html>
                     <body bgcolor="ffffff">
                        <br>
                        <center>
                        <table width="70%" noborder bgcolor="ffffff" align="center">
                           <tr>
                              <td bgcolor="dcdcdc">
                                 <font color="cc0000">
                                 <center>
                                 <?php echo _("ERROR") ?>
                                 </center>
                                 </font>
                              </td>
                           </tr>
                           <tr>
                              <td>
                                 <center>
                                 <?php echo _("Unknown user or password incorrect.") ?><br>
                                 <a href="login.php" target="_top"><?php echo _("Click here to try again") ?></a>
                                 </center>
                              </td>
                           </tr>
                        </table>
                        </center>
                     </body>
                  </html>
               <?php
               session_destroy();
               exit;
            }
         } else {
            exit;
         }
      }

      return $imap_stream;
   }


   /******************************************************************************
    **  Simply logs out the imap session
    ******************************************************************************/
   function sqimap_logout ($imap_stream) {
      fputs ($imap_stream, sqimap_session_id() . " LOGOUT\r\n");
   }

   function sqimap_capability($imap_stream, $capability) {
        global $sqimap_capabilities;

        if (!is_array($sqimap_capabilities)) {
            fputs ($imap_stream, sqimap_session_id() . " CAPABILITY\r\n");
            $read = sqimap_read_data($imap_stream, sqimap_session_id(), true, $a, $b);

            $c = explode(' ', $read[0]);
            for ($i=2; $i < count($c); $i++) {
                $cap_list = explode('=', $c[$i]);
                if (isset($cap_list[1]))
                    $sqimap_capabilities[$cap_list[0]] = $cap_list[1];
                else
                    $sqimap_capabilities[$cap_list[0]] = TRUE;
            }
        }
        if (! isset($sqimap_capabilities[$capability]))
        return false;
        return $sqimap_capabilities[$capability];
    }

   /******************************************************************************
    **  Returns the delimeter between mailboxes:  INBOX/Test, or INBOX.Test... 
    ******************************************************************************/
   function sqimap_get_delimiter ($imap_stream = false) {

      global $sqimap_delimiter;
      global $optional_delimiter;

      /* Use configured delimiter if set */
      if((!empty($optional_delimiter)) && $optional_delimiter != "detect")
         return $optional_delimiter;

      /* Do some caching here */
      if (!$sqimap_delimiter) {
        if (sqimap_capability($imap_stream, "NAMESPACE")) {
            /* According to something that I can't find, this is supposed to work on all systems
            OS: This won't work in Courier IMAP.
            OS:  According to rfc2342 response from NAMESPACE command is:
            OS:  * NAMESPACE (PERSONAL NAMESPACES) (OTHER_USERS NAMESPACE) (SHARED NAMESPACES)
            OS:  We want to lookup all personal NAMESPACES...
            */
            fputs ($imap_stream, sqimap_session_id() . " NAMESPACE\r\n");
            $read = sqimap_read_data($imap_stream, sqimap_session_id(), true, $a, $b);
            if (eregi('\\* NAMESPACE +(\\( *\\(.+\\) *\\)|NIL) +(\\( *\\(.+\\) *\\)|NIL) +(\\( *\\(.+\\) *\\)|NIL)', $read[0], $data)) {
                if (eregi('^\\( *\\((.*)\\) *\\)', $data[1], $data2))
                    $pn = $data2[1];
                $pna = explode(')(', $pn);
                while (list($k, $v) = each($pna))
                {
                    $lst = explode('"', $v);
                    if (isset($lst[3])) {
                        $pn[$lst[1]] = $lst[3];
                    } else {
                        $pn[$lst[1]] = '';
                    }
                }
            }
            $sqimap_delimiter = $pn[0];
        } else {
            fputs ($imap_stream, ". LIST \"INBOX\" \"\"\r\n");
            $read = sqimap_read_data($imap_stream, '.', true, $a, $b);
            $quote_position = strpos ($read[0], '"');
            $sqimap_delimiter = substr ($read[0], $quote_position+1, 1);
        }
    }
    return $sqimap_delimiter;
   }


   /******************************************************************************
    **  Gets the number of messages in the current mailbox. 
    ******************************************************************************/
   function sqimap_get_num_messages ($imap_stream, $mailbox) {
      fputs ($imap_stream, sqimap_session_id() . " EXAMINE \"$mailbox\"\r\n");
      $read_ary = sqimap_read_data ($imap_stream, sqimap_session_id(), true, $result, $message);
      for ($i = 0; $i < count($read_ary); $i++) {
         if (ereg("[^ ]+ +([^ ]+) +EXISTS", $read_ary[$i], $regs)) {
            return $regs[1];
         }
      }
      return "BUG!  Couldn't get number of messages in $mailbox!";
   }

   
   /******************************************************************************
    **  Returns a displayable email address 
    ******************************************************************************/
   function sqimap_find_email ($string) {
      /** Luke Ehresman <lehresma@css.tayloru.edu>
       ** <lehresma@css.tayloru.edu>
       ** lehresma@css.tayloru.edu
       **
       ** What about
       **    lehresma@css.tayloru.edu (Luke Ehresman)
       **/

      if (ereg("<([^>]+)>", $string, $regs)) {
          $string = $regs[1];
      }
      return trim($string); 
   }

   
   /******************************************************************************
    **  Takes the From: field, and creates a displayable name.
    **    Luke Ehresman <lkehresman@yahoo.com>
    **           becomes:   Luke Ehresman
    **    <lkehresman@yahoo.com>
    **           becomes:   lkehresman@yahoo.com
    ******************************************************************************/
   function sqimap_find_displayable_name ($string) {
      $string = ' '.trim($string);
      $orig_string = $string;
      if (strpos($string, '<') && strpos($string, '>')) {
         if (strpos($string, '<') == 1) {
            $string = sqimap_find_email($string);
         } else {
            $string = trim($string);
            $string = substr($string, 0, strpos($string, '<'));
            $string = ereg_replace ('"', '', $string);   
         }   

         if (trim($string) == '') {
            $string = sqimap_find_email($orig_string);
         }
      }
      return $string; 
   }


   /******************************************************************************
    **  Returns the number of unseen messages in this folder 
    ******************************************************************************/
   function sqimap_unseen_messages ($imap_stream, $mailbox) {
      //fputs ($imap_stream, sqimap_session_id() . " SEARCH UNSEEN NOT DELETED\r\n");
      fputs ($imap_stream, sqimap_session_id() . " STATUS \"$mailbox\" (UNSEEN)\r\n");
      $read_ary = sqimap_read_data ($imap_stream, sqimap_session_id(), true, $result, $message);
      ereg("UNSEEN ([0-9]+)", $read_ary[0], $regs);
      return $regs[1];
   }
 
  
   /******************************************************************************
    **  Saves a message to a given folder -- used for saving sent messages
    ******************************************************************************/
   function sqimap_append ($imap_stream, $sent_folder, $length) {
      fputs ($imap_stream, sqimap_session_id() . " APPEND \"$sent_folder\" (\\Seen) \{$length}\r\n");
      $tmp = fgets ($imap_stream, 1024);
   } 

   function sqimap_append_done ($imap_stream) {
      fputs ($imap_stream, "\r\n");
      $tmp = fgets ($imap_stream, 1024);
   }
?>
Commit	Line	Data
59177427	1	<?php
bccadd02	2
052e0c26	3	/**
7350889b	4	* imap.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	* This implements all functions that do general imap functions.
	10	*
	11	* $Id$
	12	*/
	13
	14	/**
	15	* Unique SessionId
	16	*
	17	* Sets an unique session id in order to avoid simultanous sessions crash.
	18	*
	19	* @return string a 4 chars unique string
	20	*/
	21	function sqimap_session_id() {
	22
	23	if (session_id() == '')
	24	global $RememberedSessionID;
	25
	26	if (! isset($RememberedSessionID))
	27	$RememberedSessionID = GenerateRandomString(4, '', 7);
	28	else
	29	$RememberedSessionID = substr(session_id(), -4);
	30
	31	return( $RememberedSessionID );
180aa6d7	32	}
	33
	34
052e0c26	35	/******************************************************************************
	36	** Reads the output from the IMAP stream. If handle_errors is set to true,
	37	** this will also handle all errors that are received. If it is not set,
	38	** the errors will be sent back through $response and $message
	39	******************************************************************************/
a3432f47	40
91f68e94	41	function sqimap_read_data_list ($imap_stream, $pre, $handle_errors,
f1e6f580	42	&$response, &$message) {
f1e6f580	43	global $color, $squirrelmail_language;
245a6892	44
f1e6f580	45	$read = '';
91f68e94	46	$resultlist = array();
7350889b	47
91f68e94	48	$more_msgs = true;
	49	while ($more_msgs) {
	50	$data = array();
	51	$total_size = 0;
d9ca5b40	52	while (strpos($read, "\n") === false) {
	53	$read .= fgets($imap_stream, 9096);
	54	}
4f5c1bcb	55
91f68e94	56	if (ereg("^\\* [0-9]+ FETCH.*\\{([0-9]+)\\}", $read, $regs)) {
	57	$size = $regs[1];
	58	} else if (ereg("^\\* [0-9]+ FETCH", $read, $regs)) {
	59	// Sizeless response, probably single-line
55412053	60	$size = -1;
91f68e94	61	$data[] = $read;
91f68e94	62	$read = fgets($imap_stream, 9096);
d9ca5b40	63	} else {
55412053	64	$size = -1;
91f68e94	65	}
	66	while (1) {
	67	while (strpos($read, "\n") === false) {
	68	$read .= fgets($imap_stream, 9096);
	69	}
91f68e94	70	// If we know the size, no need to look at the end parameters
	71	if ($size > 0) {
	72	if ($total_size == $size) {
	73	// We've reached the end of this 'message', switch to the next one.
	74	$data[] = $read;
37e24380	75	break;
91f68e94	76	} else if ($total_size > $size) {
	77	$difference = $total_size - $size;
	78	$total_size = $total_size - strlen($read);
	79	$data[] = substr ($read, 0, strlen($read)-$difference);
	80	$read = substr ($read, strlen($read)-$difference, strlen($read));
	81	break;
	82	} else {
	83	$data[] = $read;
	84	$read = fgets($imap_stream, 9096);
f1e6f580	85	while (strpos($read, "\n") === false) {
	86	$read .= fgets($imap_stream, 9096);
	87	}
91f68e94	88	}
91f68e94	89	$total_size += strlen($read);
4f5c1bcb	90	} else {
91f68e94	91	if (ereg("^$pre (OK\|BAD\|NO)(.*)", $read, $regs) \|\|
55412053	92	(($size == -1) && ereg("^\\* [0-9]+ FETCH.*", $read, $regs))) {
91f68e94	93	break;
	94	} else {
	95	$data[] = $read;
	96	$read = fgets ($imap_stream, 9096);
	97	}
4f5c1bcb	98	}
d9ca5b40	99	}
a3db804c	100
91f68e94	101	while (($more_msgs = !ereg("^$pre (OK\|BAD\|NO)(.*)$", $read, $regs)) &&
	102	!ereg("^\\* [0-9]+ FETCH.*", $read, $regs)) {
	103	$read = fgets($imap_stream, 9096);
	104	}
	105	$resultlist[] = $data;
	106	}
3d2504a1	107	$response = $regs[1];
	108	$message = trim($regs[2]);
	109
f7b1b3b1	110	if ($handle_errors == false) { return $resultlist; }
d9ca5b40	111
74424a43	112	if ($response == 'NO') {
f358f099	113	// ignore this error from m$ exchange, it is not fatal (aka bug)
8e8ebd27	114	if (strstr($message, 'command resulted in') === false) {
441f2d33	115	set_up_language($squirrelmail_language);
04632dbc	116	echo "<br><b><font color=$color[2]>\n";
f358f099	117	echo _("ERROR : Could not complete request.");
04632dbc	118	echo "</b><br>\n";
f358f099	119	echo _("Reason Given: ");
3d2504a1	120	echo $message . "</font><br>\n";
052e0c26	121	exit;
052e0c26	122	}
74424a43	123	} else if ($response == 'BAD') {
f358f099	124	set_up_language($squirrelmail_language);
	125	echo "<br><b><font color=$color[2]>\n";
	126	echo _("ERROR : Bad or malformed request.");
	127	echo "</b><br>\n";
	128	echo _("Server responded: ");
	129	echo $message . "</font><br>\n";
	130	exit;
052e0c26	131	}
91f68e94	132	return $resultlist;
	133	}
	134
	135	function sqimap_read_data ($imap_stream, $pre, $handle_errors, &$response, &$message) {
f1e6f580	136	$res = sqimap_read_data_list($imap_stream, $pre, $handle_errors, $response, $message);
f1e6f580	137	return $res[0];
052e0c26	138	}
f1e6f580	139
052e0c26	140	/******************************************************************************
	141	** Logs the user into the imap server. If $hide is set, no error messages
	142	** will be displayed. This function returns the imap connection handle.
	143	******************************************************************************/
	144	function sqimap_login ($username, $password, $imap_server_address, $imap_port, $hide) {
bc104ef3	145	global $color, $squirrelmail_language, $HTTP_ACCEPT_LANGUAGE, $onetimepad;
1b187352	146
342c46bd	147	$imap_stream = fsockopen ($imap_server_address, $imap_port,
090595e1	148	$error_number, $error_string, 15);
052e0c26	149	$server_info = fgets ($imap_stream, 1024);
f1e6f580	150
52eefafc	151	// Decrypt the password
bc104ef3	152	$password = OneTimePadDecrypt($password, $onetimepad);
52eefafc	153
052e0c26	154	/ Do some error correction /
	155	if (!$imap_stream) {
	156	if (!$hide) {
441f2d33	157	set_up_language($squirrelmail_language, true);
1b187352	158	printf (_("Error connecting to IMAP server: %s.")."<br>\r\n", $imap_server_address);
052e0c26	159	echo "$error_number : $error_string<br>\r\n";
	160	}
	161	exit;
	162	}
	163
f1e6f580	164	fputs ($imap_stream, sqimap_session_id() . ' LOGIN "' . quoteIMAP($username) .
704db5b2	165	'" "' . quoteIMAP($password) . "\"\r\n");
180aa6d7	166	$read = sqimap_read_data ($imap_stream, sqimap_session_id(), false, $response, $message);
052e0c26	167
052e0c26	168	/ If the connection was not successful, lets see why /
3d2504a1	169	if ($response != "OK") {
052e0c26	170	if (!$hide) {
74424a43	171	if ($response != 'NO') {
3d2504a1	172	// "BAD" and anything else gets reported here.
441f2d33	173	set_up_language($squirrelmail_language, true);
74424a43	174	if ($response == 'BAD')
3d2504a1	175	printf (_("Bad request: %s")."<br>\r\n", $message);
	176	else
	177	printf (_("Unknown error: %s") . "<br>\n", $message);
74424a43	178	echo '<br>';
3d2504a1	179	echo _("Read data:") . "<br>\n";
f1e6f580	180	if (is_array($read))
	181	{
	182	foreach ($read as $line)
	183	{
	184	echo htmlspecialchars($line) . "<br>\n";
	185	}
3d2504a1	186	}
052e0c26	187	exit;
165e24a7	188	} else {
1b187352	189	// If the user does not log in with the correct
	190	// username and password it is not possible to get the
	191	// correct locale from the user's preferences.
	192	// Therefore, apply the same hack as on the login
	193	// screen.
	194
	195	// $squirrelmail_language is set by a cookie when
	196	// the user selects language and logs out
f1e6f580	197
441f2d33	198	set_up_language($squirrelmail_language, true);
f1e6f580	199
052e0c26	200	?>
052e0c26	201	<html>
74424a43	202	<body bgcolor="ffffff">
052e0c26	203	<br>
052e0c26	204	<center>
74424a43	205	<table width="70%" noborder bgcolor="ffffff" align="center">
052e0c26	206	<tr>
74424a43	207	<td bgcolor="dcdcdc">
74424a43	208	<font color="cc0000">
052e0c26	209	<center>
59177427	210	<?php echo _("ERROR") ?>
052e0c26	211	</center>
	212	</font>
	213	</td>
	214	</tr>
	215	<tr>
	216	<td>
	217	<center>
59177427	218	<?php echo _("Unknown user or password incorrect.") ?><br>
5630c7ec	219	<a href="login.php" target="_top"><?php echo _("Click here to try again") ?></a>
052e0c26	220	</center>
	221	</td>
	222	</tr>
	223	</table>
	224	</center>
	225	</body>
	226	</html>
59177427	227	<?php
052e0c26	228	session_destroy();
052e0c26	229	exit;
052e0c26	230	}
	231	} else {
	232	exit;
	233	}
	234	}
	235
	236	return $imap_stream;
	237	}
	238
	239
	240
	241
	242	/******************************************************************************
	243	** Simply logs out the imap session
	244	******************************************************************************/
	245	function sqimap_logout ($imap_stream) {
180aa6d7	246	fputs ($imap_stream, sqimap_session_id() . " LOGOUT\r\n");
052e0c26	247	}
052e0c26	248
f435778e	249	function sqimap_capability($imap_stream, $capability) {
f1e6f580	250	global $sqimap_capabilities;
f1e6f580	251
	252	if (!is_array($sqimap_capabilities)) {
	253	fputs ($imap_stream, sqimap_session_id() . " CAPABILITY\r\n");
	254	$read = sqimap_read_data($imap_stream, sqimap_session_id(), true, $a, $b);
	255
	256	$c = explode(' ', $read[0]);
	257	for ($i=2; $i < count($c); $i++) {
	258	$cap_list = explode('=', $c[$i]);
	259	if (isset($cap_list[1]))
	260	$sqimap_capabilities[$cap_list[0]] = $cap_list[1];
	261	else
	262	$sqimap_capabilities[$cap_list[0]] = TRUE;
	263	}
	264	}
	265	if (! isset($sqimap_capabilities[$capability]))
	266	return false;
	267	return $sqimap_capabilities[$capability];
	268	}
052e0c26	269
	270	/******************************************************************************
	271	** Returns the delimeter between mailboxes: INBOX/Test, or INBOX.Test...
	272	******************************************************************************/
f435778e	273	function sqimap_get_delimiter ($imap_stream = false) {
7350889b	274
f435778e	275	global $sqimap_delimiter;
f435778e	276	global $optional_delimiter;
f6941f00	277
f435778e	278	/* Use configured delimiter if set */
	279	if((!empty($optional_delimiter)) && $optional_delimiter != "detect")
	280	return $optional_delimiter;
a3db804c	281
f435778e	282	/* Do some caching here */
f435778e	283	if (!$sqimap_delimiter) {
f1e6f580	284	if (sqimap_capability($imap_stream, "NAMESPACE")) {
	285	/* According to something that I can't find, this is supposed to work on all systems
	286	OS: This won't work in Courier IMAP.
	287	OS: According to rfc2342 response from NAMESPACE command is:
	288	OS: * NAMESPACE (PERSONAL NAMESPACES) (OTHER_USERS NAMESPACE) (SHARED NAMESPACES)
	289	OS: We want to lookup all personal NAMESPACES...
	290	*/
	291	fputs ($imap_stream, sqimap_session_id() . " NAMESPACE\r\n");
	292	$read = sqimap_read_data($imap_stream, sqimap_session_id(), true, $a, $b);
	293	if (eregi('\\* NAMESPACE +(\\( \\(.+\\) \\)\|NIL) +(\\( \\(.+\\) \\)\|NIL) +(\\( \\(.+\\) \\)\|NIL)', $read[0], $data)) {
	294	if (eregi('^\\( \\((.)\\) *\\)', $data[1], $data2))
	295	$pn = $data2[1];
	296	$pna = explode(')(', $pn);
	297	while (list($k, $v) = each($pna))
	298	{
862ff2d3	299	$lst = explode('"', $v);
	300	if (isset($lst[3])) {
	301	$pn[$lst[1]] = $lst[3];
	302	} else {
74424a43	303	$pn[$lst[1]] = '';
862ff2d3	304	}
f1e6f580	305	}
	306	}
	307	$sqimap_delimiter = $pn[0];
	308	} else {
	309	fputs ($imap_stream, ". LIST \"INBOX\" \"\"\r\n");
	310	$read = sqimap_read_data($imap_stream, '.', true, $a, $b);
	311	$quote_position = strpos ($read[0], '"');
	312	$sqimap_delimiter = substr ($read[0], $quote_position+1, 1);
	313	}
	314	}
	315	return $sqimap_delimiter;
f435778e	316	}
052e0c26	317
	318
	319	/******************************************************************************
	320	** Gets the number of messages in the current mailbox.
	321	******************************************************************************/
	322	function sqimap_get_num_messages ($imap_stream, $mailbox) {
180aa6d7	323	fputs ($imap_stream, sqimap_session_id() . " EXAMINE \"$mailbox\"\r\n");
180aa6d7	324	$read_ary = sqimap_read_data ($imap_stream, sqimap_session_id(), true, $result, $message);
052e0c26	325	for ($i = 0; $i < count($read_ary); $i++) {
441f2d33	326	if (ereg("[^ ]+ +([^ ]+) +EXISTS", $read_ary[$i], $regs)) {
f1e6f580	327	return $regs[1];
052e0c26	328	}
052e0c26	329	}
441f2d33	330	return "BUG! Couldn't get number of messages in $mailbox!";
052e0c26	331	}
	332
	333
	334	/******************************************************************************
	335	** Returns a displayable email address
	336	******************************************************************************/
	337	function sqimap_find_email ($string) {
	338	/** Luke Ehresman <lehresma@css.tayloru.edu>
	339	** <lehresma@css.tayloru.edu>
	340	** lehresma@css.tayloru.edu
1d2ce1c3	341	**
	342	** What about
	343	** lehresma@css.tayloru.edu (Luke Ehresman)
052e0c26	344	**/
052e0c26	345
441f2d33	346	if (ereg("<([^>]+)>", $string, $regs)) {
441f2d33	347	$string = $regs[1];
052e0c26	348	}
	349	return trim($string);
	350	}
	351
	352
	353	/******************************************************************************
	354	** Takes the From: field, and creates a displayable name.
	355	** Luke Ehresman <lkehresman@yahoo.com>
	356	** becomes: Luke Ehresman
	357	** <lkehresman@yahoo.com>
	358	** becomes: lkehresman@yahoo.com
	359	******************************************************************************/
	360	function sqimap_find_displayable_name ($string) {
74424a43	361	$string = ' '.trim($string);
1d2ce1c3	362	$orig_string = $string;
74424a43	363	if (strpos($string, '<') && strpos($string, '>')) {
74424a43	364	if (strpos($string, '<') == 1) {
1d2ce1c3	365	$string = sqimap_find_email($string);
	366	} else {
	367	$string = trim($string);
74424a43	368	$string = substr($string, 0, strpos($string, '<'));
74424a43	369	$string = ereg_replace ('"', '', $string);
1d2ce1c3	370	}
1d2ce1c3	371
74424a43	372	if (trim($string) == '') {
1d2ce1c3	373	$string = sqimap_find_email($orig_string);
	374	}
	375	}
	376	return $string;
052e0c26	377	}
	378
	379
052e0c26	380	/******************************************************************************
	381	** Returns the number of unseen messages in this folder
	382	******************************************************************************/
4d2c01e3	383	function sqimap_unseen_messages ($imap_stream, $mailbox) {
180aa6d7	384	//fputs ($imap_stream, sqimap_session_id() . " SEARCH UNSEEN NOT DELETED\r\n");
	385	fputs ($imap_stream, sqimap_session_id() . " STATUS \"$mailbox\" (UNSEEN)\r\n");
	386	$read_ary = sqimap_read_data ($imap_stream, sqimap_session_id(), true, $result, $message);
441f2d33	387	ereg("UNSEEN ([0-9]+)", $read_ary[0], $regs);
441f2d33	388	return $regs[1];
052e0c26	389	}
	390
	391
	392	/******************************************************************************
	393	** Saves a message to a given folder -- used for saving sent messages
	394	******************************************************************************/
	395	function sqimap_append ($imap_stream, $sent_folder, $length) {
180aa6d7	396	fputs ($imap_stream, sqimap_session_id() . " APPEND \"$sent_folder\" (\\Seen) \{$length}\r\n");
052e0c26	397	$tmp = fgets ($imap_stream, 1024);
	398	}
	399
	400	function sqimap_append_done ($imap_stream) {
	401	fputs ($imap_stream, "\r\n");
	402	$tmp = fgets ($imap_stream, 1024);
	403	}
	404	?>