[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.
    **
    **  $Id$
    **/

   if (defined ('imap_general_php'))
      return;
   define ('imap_general_php', true);

global $imap_general_debug;
$imap_general_debug = false;

   /******************************************************************************
    **  Sets an unique session id in order to avoid simultanous sessions crash.
    ******************************************************************************/

   function sqimap_session_id() {
      return( substr( session_id(), -4 ) );
   }


   /******************************************************************************
    **  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;
      global $imap_general_debug;

      $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

            // For debugging purposes
            if ($imap_general_debug) {
                echo "<small><tt><font color=\"#CC0000\">$read</font></tt></small><br>\n";
                flush();
            }

            $size = -1;
            $data[] = $read;
            $read = fgets($imap_stream, 9096);
         } else {
            $size = -1;
         }
         while (1) {
            while (strpos($read, "\n") === false) {
               $read .= fgets($imap_stream, 9096);
            }

            // For debugging purposes
            if ($imap_general_debug) {
                echo "<small><tt><font color=\"#CC0000\">$read</font></tt></small><br>\n";
                flush();
            }

            // 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 ($imap_general_debug) { echo '--<br>'; }
      if ($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;
global $imap_general_debug;

        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 $imap_general_debug;
      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	/**
052e0c26	4	** imap.php
bccadd02	5	** Copyright (c) 1999-2001 The Squirrelmail Development Team
bccadd02	6	** Licensed under the GNU GPL. For full terms see the file COPYING.
052e0c26	7	**
052e0c26	8	** This implements all functions that do general imap functions.
245a6892	9	**
245a6892	10	** $Id$
052e0c26	11	**/
052e0c26	12
f435778e	13	if (defined ('imap_general_php'))
	14	return;
	15	define ('imap_general_php', true);
	16
f1e6f580	17	global $imap_general_debug;
f1e6f580	18	$imap_general_debug = false;
a3db804c	19
180aa6d7	20	/******************************************************************************
	21	** Sets an unique session id in order to avoid simultanous sessions crash.
	22	******************************************************************************/
	23
	24	function sqimap_session_id() {
	25	return( substr( session_id(), -4 ) );
	26	}
	27
	28
052e0c26	29	/******************************************************************************
	30	** Reads the output from the IMAP stream. If handle_errors is set to true,
	31	** this will also handle all errors that are received. If it is not set,
	32	** the errors will be sent back through $response and $message
	33	******************************************************************************/
a3432f47	34
91f68e94	35	function sqimap_read_data_list ($imap_stream, $pre, $handle_errors,
f1e6f580	36	&$response, &$message) {
f1e6f580	37	global $color, $squirrelmail_language;
f7b1b3b1	38	global $imap_general_debug;
245a6892	39
f1e6f580	40	$read = '';
91f68e94	41	$resultlist = array();
245a6892	42
91f68e94	43	$more_msgs = true;
	44	while ($more_msgs) {
	45	$data = array();
	46	$total_size = 0;
d9ca5b40	47	while (strpos($read, "\n") === false) {
	48	$read .= fgets($imap_stream, 9096);
	49	}
4f5c1bcb	50
91f68e94	51	if (ereg("^\\* [0-9]+ FETCH.*\\{([0-9]+)\\}", $read, $regs)) {
	52	$size = $regs[1];
	53	} else if (ereg("^\\* [0-9]+ FETCH", $read, $regs)) {
	54	// Sizeless response, probably single-line
f7b1b3b1	55
	56	// For debugging purposes
	57	if ($imap_general_debug) {
	58	echo "<small><tt><font color=\"#CC0000\">$read</font></tt></small><br>\n";
	59	flush();
	60	}
	61
55412053	62	$size = -1;
91f68e94	63	$data[] = $read;
91f68e94	64	$read = fgets($imap_stream, 9096);
d9ca5b40	65	} else {
55412053	66	$size = -1;
91f68e94	67	}
	68	while (1) {
	69	while (strpos($read, "\n") === false) {
	70	$read .= fgets($imap_stream, 9096);
	71	}
f7b1b3b1	72
	73	// For debugging purposes
	74	if ($imap_general_debug) {
	75	echo "<small><tt><font color=\"#CC0000\">$read</font></tt></small><br>\n";
	76	flush();
	77	}
	78
91f68e94	79	// If we know the size, no need to look at the end parameters
	80	if ($size > 0) {
	81	if ($total_size == $size) {
	82	// We've reached the end of this 'message', switch to the next one.
	83	$data[] = $read;
37e24380	84	break;
91f68e94	85	} else if ($total_size > $size) {
	86	$difference = $total_size - $size;
	87	$total_size = $total_size - strlen($read);
	88	$data[] = substr ($read, 0, strlen($read)-$difference);
	89	$read = substr ($read, strlen($read)-$difference, strlen($read));
	90	break;
	91	} else {
	92	$data[] = $read;
	93	$read = fgets($imap_stream, 9096);
f1e6f580	94	while (strpos($read, "\n") === false) {
	95	$read .= fgets($imap_stream, 9096);
	96	}
91f68e94	97	}
91f68e94	98	$total_size += strlen($read);
4f5c1bcb	99	} else {
91f68e94	100	if (ereg("^$pre (OK\|BAD\|NO)(.*)", $read, $regs) \|\|
55412053	101	(($size == -1) && ereg("^\\* [0-9]+ FETCH.*", $read, $regs))) {
91f68e94	102	break;
	103	} else {
	104	$data[] = $read;
	105	$read = fgets ($imap_stream, 9096);
	106	}
4f5c1bcb	107	}
d9ca5b40	108	}
a3db804c	109
91f68e94	110	while (($more_msgs = !ereg("^$pre (OK\|BAD\|NO)(.*)$", $read, $regs)) &&
	111	!ereg("^\\* [0-9]+ FETCH.*", $read, $regs)) {
	112	$read = fgets($imap_stream, 9096);
	113	}
	114	$resultlist[] = $data;
	115	}
3d2504a1	116	$response = $regs[1];
	117	$message = trim($regs[2]);
	118
f7b1b3b1	119	if ($imap_general_debug) { echo '--<br>'; }
f7b1b3b1	120	if ($handle_errors == false) { return $resultlist; }
d9ca5b40	121
74424a43	122	if ($response == 'NO') {
f358f099	123	// ignore this error from m$ exchange, it is not fatal (aka bug)
8e8ebd27	124	if (strstr($message, 'command resulted in') === false) {
441f2d33	125	set_up_language($squirrelmail_language);
04632dbc	126	echo "<br><b><font color=$color[2]>\n";
f358f099	127	echo _("ERROR : Could not complete request.");
04632dbc	128	echo "</b><br>\n";
f358f099	129	echo _("Reason Given: ");
3d2504a1	130	echo $message . "</font><br>\n";
052e0c26	131	exit;
052e0c26	132	}
74424a43	133	} else if ($response == 'BAD') {
f358f099	134	set_up_language($squirrelmail_language);
	135	echo "<br><b><font color=$color[2]>\n";
	136	echo _("ERROR : Bad or malformed request.");
	137	echo "</b><br>\n";
	138	echo _("Server responded: ");
	139	echo $message . "</font><br>\n";
	140	exit;
052e0c26	141	}
91f68e94	142	return $resultlist;
	143	}
	144
	145	function sqimap_read_data ($imap_stream, $pre, $handle_errors, &$response, &$message) {
f1e6f580	146	$res = sqimap_read_data_list($imap_stream, $pre, $handle_errors, $response, $message);
f1e6f580	147	return $res[0];
052e0c26	148	}
f1e6f580	149
052e0c26	150	/******************************************************************************
	151	** Logs the user into the imap server. If $hide is set, no error messages
	152	** will be displayed. This function returns the imap connection handle.
	153	******************************************************************************/
	154	function sqimap_login ($username, $password, $imap_server_address, $imap_port, $hide) {
bc104ef3	155	global $color, $squirrelmail_language, $HTTP_ACCEPT_LANGUAGE, $onetimepad;
1b187352	156
342c46bd	157	$imap_stream = fsockopen ($imap_server_address, $imap_port,
090595e1	158	$error_number, $error_string, 15);
052e0c26	159	$server_info = fgets ($imap_stream, 1024);
f1e6f580	160
52eefafc	161	// Decrypt the password
bc104ef3	162	$password = OneTimePadDecrypt($password, $onetimepad);
52eefafc	163
052e0c26	164	/ Do some error correction /
	165	if (!$imap_stream) {
	166	if (!$hide) {
441f2d33	167	set_up_language($squirrelmail_language, true);
1b187352	168	printf (_("Error connecting to IMAP server: %s.")."<br>\r\n", $imap_server_address);
052e0c26	169	echo "$error_number : $error_string<br>\r\n";
	170	}
	171	exit;
	172	}
	173
f1e6f580	174	fputs ($imap_stream, sqimap_session_id() . ' LOGIN "' . quoteIMAP($username) .
704db5b2	175	'" "' . quoteIMAP($password) . "\"\r\n");
180aa6d7	176	$read = sqimap_read_data ($imap_stream, sqimap_session_id(), false, $response, $message);
052e0c26	177
052e0c26	178	/ If the connection was not successful, lets see why /
3d2504a1	179	if ($response != "OK") {
052e0c26	180	if (!$hide) {
74424a43	181	if ($response != 'NO') {
3d2504a1	182	// "BAD" and anything else gets reported here.
441f2d33	183	set_up_language($squirrelmail_language, true);
74424a43	184	if ($response == 'BAD')
3d2504a1	185	printf (_("Bad request: %s")."<br>\r\n", $message);
	186	else
	187	printf (_("Unknown error: %s") . "<br>\n", $message);
74424a43	188	echo '<br>';
3d2504a1	189	echo _("Read data:") . "<br>\n";
f1e6f580	190	if (is_array($read))
	191	{
	192	foreach ($read as $line)
	193	{
	194	echo htmlspecialchars($line) . "<br>\n";
	195	}
3d2504a1	196	}
052e0c26	197	exit;
165e24a7	198	} else {
1b187352	199	// If the user does not log in with the correct
	200	// username and password it is not possible to get the
	201	// correct locale from the user's preferences.
	202	// Therefore, apply the same hack as on the login
	203	// screen.
	204
	205	// $squirrelmail_language is set by a cookie when
	206	// the user selects language and logs out
f1e6f580	207
441f2d33	208	set_up_language($squirrelmail_language, true);
f1e6f580	209
052e0c26	210	?>
052e0c26	211	<html>
74424a43	212	<body bgcolor="ffffff">
052e0c26	213	<br>
052e0c26	214	<center>
74424a43	215	<table width="70%" noborder bgcolor="ffffff" align="center">
052e0c26	216	<tr>
74424a43	217	<td bgcolor="dcdcdc">
74424a43	218	<font color="cc0000">
052e0c26	219	<center>
59177427	220	<?php echo _("ERROR") ?>
052e0c26	221	</center>
	222	</font>
	223	</td>
	224	</tr>
	225	<tr>
	226	<td>
	227	<center>
59177427	228	<?php echo _("Unknown user or password incorrect.") ?><br>
5630c7ec	229	<a href="login.php" target="_top"><?php echo _("Click here to try again") ?></a>
052e0c26	230	</center>
	231	</td>
	232	</tr>
	233	</table>
	234	</center>
	235	</body>
	236	</html>
59177427	237	<?php
052e0c26	238	session_destroy();
052e0c26	239	exit;
052e0c26	240	}
	241	} else {
	242	exit;
	243	}
	244	}
	245
	246	return $imap_stream;
	247	}
	248
	249
	250
	251
	252	/******************************************************************************
	253	** Simply logs out the imap session
	254	******************************************************************************/
	255	function sqimap_logout ($imap_stream) {
180aa6d7	256	fputs ($imap_stream, sqimap_session_id() . " LOGOUT\r\n");
052e0c26	257	}
052e0c26	258
f435778e	259	function sqimap_capability($imap_stream, $capability) {
f1e6f580	260	global $sqimap_capabilities;
	261	global $imap_general_debug;
	262
	263	if (!is_array($sqimap_capabilities)) {
	264	fputs ($imap_stream, sqimap_session_id() . " CAPABILITY\r\n");
	265	$read = sqimap_read_data($imap_stream, sqimap_session_id(), true, $a, $b);
	266
	267	$c = explode(' ', $read[0]);
	268	for ($i=2; $i < count($c); $i++) {
	269	$cap_list = explode('=', $c[$i]);
	270	if (isset($cap_list[1]))
	271	$sqimap_capabilities[$cap_list[0]] = $cap_list[1];
	272	else
	273	$sqimap_capabilities[$cap_list[0]] = TRUE;
	274	}
	275	}
	276	if (! isset($sqimap_capabilities[$capability]))
	277	return false;
	278	return $sqimap_capabilities[$capability];
	279	}
052e0c26	280
	281	/******************************************************************************
	282	** Returns the delimeter between mailboxes: INBOX/Test, or INBOX.Test...
	283	******************************************************************************/
f435778e	284	function sqimap_get_delimiter ($imap_stream = false) {
f1e6f580	285	global $imap_general_debug;
f435778e	286	global $sqimap_delimiter;
f435778e	287	global $optional_delimiter;
f6941f00	288
f435778e	289	/* Use configured delimiter if set */
	290	if((!empty($optional_delimiter)) && $optional_delimiter != "detect")
	291	return $optional_delimiter;
a3db804c	292
f435778e	293	/* Do some caching here */
f435778e	294	if (!$sqimap_delimiter) {
f1e6f580	295	if (sqimap_capability($imap_stream, "NAMESPACE")) {
	296	/* According to something that I can't find, this is supposed to work on all systems
	297	OS: This won't work in Courier IMAP.
	298	OS: According to rfc2342 response from NAMESPACE command is:
	299	OS: * NAMESPACE (PERSONAL NAMESPACES) (OTHER_USERS NAMESPACE) (SHARED NAMESPACES)
	300	OS: We want to lookup all personal NAMESPACES...
	301	*/
	302	fputs ($imap_stream, sqimap_session_id() . " NAMESPACE\r\n");
	303	$read = sqimap_read_data($imap_stream, sqimap_session_id(), true, $a, $b);
	304	if (eregi('\\* NAMESPACE +(\\( \\(.+\\) \\)\|NIL) +(\\( \\(.+\\) \\)\|NIL) +(\\( \\(.+\\) \\)\|NIL)', $read[0], $data)) {
	305	if (eregi('^\\( \\((.)\\) *\\)', $data[1], $data2))
	306	$pn = $data2[1];
	307	$pna = explode(')(', $pn);
	308	while (list($k, $v) = each($pna))
	309	{
862ff2d3	310	$lst = explode('"', $v);
	311	if (isset($lst[3])) {
	312	$pn[$lst[1]] = $lst[3];
	313	} else {
74424a43	314	$pn[$lst[1]] = '';
862ff2d3	315	}
f1e6f580	316	}
	317	}
	318	$sqimap_delimiter = $pn[0];
	319	} else {
	320	fputs ($imap_stream, ". LIST \"INBOX\" \"\"\r\n");
	321	$read = sqimap_read_data($imap_stream, '.', true, $a, $b);
	322	$quote_position = strpos ($read[0], '"');
	323	$sqimap_delimiter = substr ($read[0], $quote_position+1, 1);
	324	}
	325	}
	326	return $sqimap_delimiter;
f435778e	327	}
052e0c26	328
	329
	330	/******************************************************************************
	331	** Gets the number of messages in the current mailbox.
	332	******************************************************************************/
	333	function sqimap_get_num_messages ($imap_stream, $mailbox) {
180aa6d7	334	fputs ($imap_stream, sqimap_session_id() . " EXAMINE \"$mailbox\"\r\n");
180aa6d7	335	$read_ary = sqimap_read_data ($imap_stream, sqimap_session_id(), true, $result, $message);
052e0c26	336	for ($i = 0; $i < count($read_ary); $i++) {
441f2d33	337	if (ereg("[^ ]+ +([^ ]+) +EXISTS", $read_ary[$i], $regs)) {
f1e6f580	338	return $regs[1];
052e0c26	339	}
052e0c26	340	}
441f2d33	341	return "BUG! Couldn't get number of messages in $mailbox!";
052e0c26	342	}
	343
	344
	345	/******************************************************************************
	346	** Returns a displayable email address
	347	******************************************************************************/
	348	function sqimap_find_email ($string) {
	349	/** Luke Ehresman <lehresma@css.tayloru.edu>
	350	** <lehresma@css.tayloru.edu>
	351	** lehresma@css.tayloru.edu
1d2ce1c3	352	**
	353	** What about
	354	** lehresma@css.tayloru.edu (Luke Ehresman)
052e0c26	355	**/
052e0c26	356
441f2d33	357	if (ereg("<([^>]+)>", $string, $regs)) {
441f2d33	358	$string = $regs[1];
052e0c26	359	}
	360	return trim($string);
	361	}
	362
	363
	364	/******************************************************************************
	365	** Takes the From: field, and creates a displayable name.
	366	** Luke Ehresman <lkehresman@yahoo.com>
	367	** becomes: Luke Ehresman
	368	** <lkehresman@yahoo.com>
	369	** becomes: lkehresman@yahoo.com
	370	******************************************************************************/
	371	function sqimap_find_displayable_name ($string) {
74424a43	372	$string = ' '.trim($string);
1d2ce1c3	373	$orig_string = $string;
74424a43	374	if (strpos($string, '<') && strpos($string, '>')) {
74424a43	375	if (strpos($string, '<') == 1) {
1d2ce1c3	376	$string = sqimap_find_email($string);
	377	} else {
	378	$string = trim($string);
74424a43	379	$string = substr($string, 0, strpos($string, '<'));
74424a43	380	$string = ereg_replace ('"', '', $string);
1d2ce1c3	381	}
1d2ce1c3	382
74424a43	383	if (trim($string) == '') {
1d2ce1c3	384	$string = sqimap_find_email($orig_string);
	385	}
	386	}
	387	return $string;
052e0c26	388	}
	389
	390
052e0c26	391	/******************************************************************************
	392	** Returns the number of unseen messages in this folder
	393	******************************************************************************/
4d2c01e3	394	function sqimap_unseen_messages ($imap_stream, $mailbox) {
180aa6d7	395	//fputs ($imap_stream, sqimap_session_id() . " SEARCH UNSEEN NOT DELETED\r\n");
	396	fputs ($imap_stream, sqimap_session_id() . " STATUS \"$mailbox\" (UNSEEN)\r\n");
	397	$read_ary = sqimap_read_data ($imap_stream, sqimap_session_id(), true, $result, $message);
441f2d33	398	ereg("UNSEEN ([0-9]+)", $read_ary[0], $regs);
441f2d33	399	return $regs[1];
052e0c26	400	}
	401
	402
	403	/******************************************************************************
	404	** Saves a message to a given folder -- used for saving sent messages
	405	******************************************************************************/
	406	function sqimap_append ($imap_stream, $sent_folder, $length) {
180aa6d7	407	fputs ($imap_stream, sqimap_session_id() . " APPEND \"$sent_folder\" (\\Seen) \{$length}\r\n");
052e0c26	408	$tmp = fgets ($imap_stream, 1024);
	409	}
	410
	411	function sqimap_append_done ($imap_stream) {
	412	fputs ($imap_stream, "\r\n");
	413	$tmp = fgets ($imap_stream, 1024);
	414	}
	415	?>