[squirrelmail.git] / functions / imap_general.php

<?php

/**
 * imap.php
 *
 * Copyright (c) 1999-2002 The SquirrelMail Project Team
 * Licensed under the GNU GPL. For full terms see the file COPYING.
 *
 * This implements all functions that do general imap functions.
 *
 * $Id$
 */

require_once('../functions/page_header.php');
require_once('../functions/display_messages.php');

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

global $sqimap_session_id;
$sqimap_session_id = 1;
function sqimap_session_id() {

    global $data_dir, $username, $sqimap_session_id;

    return( sprintf("A%03d", $sqimap_session_id++) );
}

/******************************************************************************
** Both send a command and accept the result from the command.  This is
** to allow proper session number handling.
******************************************************************************/

function sqimap_run_command_list ($imap_stream, $query, $handle_errors, &$response, &$message) {
    $sid = sqimap_session_id();
    fputs ($imap_stream, $sid . ' ' . $query . "\r\n");
    $read = sqimap_read_data_list ($imap_stream, $sid, $handle_errors, $response, $message);
    return $read;
}

function sqimap_run_command ($imap_stream, $query, $handle_errors, &$response, &$message) {
    $sid = sqimap_session_id();
    fputs ($imap_stream, $sid . ' ' . $query . "\r\n");
    $read = sqimap_read_data ($imap_stream, $sid, $handle_errors, $response, $message);
    return $read;
}


/******************************************************************************
**  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" .
                 _("ERROR : Could not complete request.") .
                 "</b><br>\n" .
                 _("Reason Given: ") .
                 $message . "</font><br>\n";
            exit;
        }
    } else if ($response == 'BAD') {
        set_up_language($squirrelmail_language);
        echo "<br><b><font color=$color[2]>\n" .
             _("ERROR : Bad or malformed request.") .
             "</b><br>\n" .
             _("Server responded: ") .
             $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, $error_string, 15);
    if ( !$imap_stream ) {
        return FALSE;
    }
    $server_info = fgets ($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;
    }

    $query = 'LOGIN "' . quoteIMAP($username) .  '" "' . quoteIMAP($password) . '"';
    $read = sqimap_run_command ($imap_stream, $query, 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", $message);
                }
                echo '<br>' . _("Read data:") . "<br>\n";
                if (is_array($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);
                
                displayHtmlHeader( _("Unknown user or password incorrect.") );
                echo "<body bgcolor=\"#ffffff\">\n";
                error_username_password_incorrect();
                session_destroy();
                exit;
            }
        } else {
            exit;
        }
    }
    
    return $imap_stream;
}

/*
 *  Simply logs out the imap session
 */
function sqimap_logout ($imap_stream) {
    /* Logout is not valid until the server returns 'BYE' */
    sqimap_run_command($imap_stream, 'LOGOUT', false, $response, $message);
}

function sqimap_capability($imap_stream, $capability) {
    global $sqimap_capabilities;
    
    if (!is_array($sqimap_capabilities)) {
        $read = sqimap_run_command($imap_stream, 'CAPABILITY', 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;
    } else {
        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...
            */
            $read = sqimap_run_command($imap_stream, 'NAMESPACE', 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) {

    $read_ary = sqimap_run_command ($imap_stream, "EXAMINE \"$mailbox\"", true, $result, $message);
    for ($i = 0; $i < count($read_ary); $i++) {
     if (ereg("[^ ]+ +([^ ]+) +EXISTS", $read_ary[$i], $regs)) {
        return $regs[1];
     }
    }
    return sprintf( "BUG!  Couldn't get number of messages in %s!", $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>
 *    "Luke Ehresman" <lkehresman@yahoo.com>
 *    lkehresman@yahoo.com (Luke Ehresman)
 *           become:   Luke Ehresman
 *    <lkehresman@yahoo.com>
 *           becomes:   lkehresman@yahoo.com
 */
function sqimap_find_displayable_name ($string) {
    $string = trim($string);
    
    if ( ereg('^(.+)<.*>', $string, $regs) ) {
        $string = ereg_replace ('"', '', $regs[1] );
    }
    elseif ( ereg('\((.*)\)', $string, $regs) ) {
        if( ( $regs[1] == '' ) || ( $regs[1] == ' ' ) ){
            if ( ereg('^(.+) \(', $string, $regs) ) {
               $string = ereg_replace( ' \(\)$', '', $string );
            } else {
               $string = '&nbsp';
            }
        } else {
            $string = $regs[1];
        }
    }
    else {
        $string = sqimap_find_email($string);
    }

    return trim($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");
    $read_ary = sqimap_run_command ($imap_stream, "STATUS \"$mailbox\" (UNSEEN)", 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
35586184	3	/**
15e6162e	4	* imap.php
35586184	5	*
15e6162e	6	* Copyright (c) 1999-2002 The SquirrelMail Project Team
15e6162e	7	* Licensed under the GNU GPL. For full terms see the file COPYING.
35586184	8	*
15e6162e	9	* This implements all functions that do general imap functions.
35586184	10	*
15e6162e	11	* $Id$
35586184	12	*/
35586184	13
9c737111	14	require_once('../functions/page_header.php');
9c737111	15	require_once('../functions/display_messages.php');
35586184	16
	17	/**
	18	* Unique SessionId
	19	*
	20	* Sets an unique session id in order to avoid simultanous sessions crash.
	21	*
	22	* @return string a 4 chars unique string
	23	*/
7350889b	24
41600f7d	25	global $sqimap_session_id;
	26	$sqimap_session_id = 1;
	27	function sqimap_session_id() {
71257f8b	28
41600f7d	29	global $data_dir, $username, $sqimap_session_id;
7350889b	30
41600f7d	31	return( sprintf("A%03d", $sqimap_session_id++) );
9c737111	32	}
9c737111	33
42a07ac1	34	/******************************************************************************
	35	** Both send a command and accept the result from the command. This is
	36	** to allow proper session number handling.
	37	******************************************************************************/
	38
1c72b151	39	function sqimap_run_command_list ($imap_stream, $query, $handle_errors, &$response, &$message) {
41600f7d	40	$sid = sqimap_session_id();
	41	fputs ($imap_stream, $sid . ' ' . $query . "\r\n");
	42	$read = sqimap_read_data_list ($imap_stream, $sid, $handle_errors, $response, $message);
1c72b151	43	return $read;
	44	}
	45
42a07ac1	46	function sqimap_run_command ($imap_stream, $query, $handle_errors, &$response, &$message) {
41600f7d	47	$sid = sqimap_session_id();
	48	fputs ($imap_stream, $sid . ' ' . $query . "\r\n");
	49	$read = sqimap_read_data ($imap_stream, $sid, $handle_errors, $response, $message);
42a07ac1	50	return $read;
	51	}
	52
9c737111	53
	54	/******************************************************************************
	55	** Reads the output from the IMAP stream. If handle_errors is set to true,
	56	** this will also handle all errors that are received. If it is not set,
	57	** the errors will be sent back through $response and $message
	58	******************************************************************************/
	59
	60	function sqimap_read_data_list ($imap_stream, $pre, $handle_errors,
	61	&$response, &$message) {
	62	global $color, $squirrelmail_language;
	63
	64	$read = '';
	65	$resultlist = array();
	66
	67	$more_msgs = true;
	68	while ($more_msgs) {
	69	$data = array();
	70	$total_size = 0;
	71	while (strpos($read, "\n") === false) {
d9ca5b40	72	$read .= fgets($imap_stream, 9096);
9c737111	73	}
	74
	75	if (ereg("^\\* [0-9]+ FETCH.*\\{([0-9]+)\\}", $read, $regs)) {
	76	$size = $regs[1];
	77	} else if (ereg("^\\* [0-9]+ FETCH", $read, $regs)) {
91f68e94	78	// Sizeless response, probably single-line
55412053	79	$size = -1;
91f68e94	80	$data[] = $read;
91f68e94	81	$read = fgets($imap_stream, 9096);
9c737111	82	} else {
55412053	83	$size = -1;
9c737111	84	}
9c737111	85	while (1) {
91f68e94	86	while (strpos($read, "\n") === false) {
9c737111	87	$read .= fgets($imap_stream, 9096);
91f68e94	88	}
91f68e94	89	// If we know the size, no need to look at the end parameters
91f68e94	90	if ($size > 0) {
9c737111	91	if ($total_size == $size) {
	92	// We've reached the end of this 'message', switch to the next one.
	93	$data[] = $read;
	94	break;
	95	} else if ($total_size > $size) {
	96	$difference = $total_size - $size;
	97	$total_size = $total_size - strlen($read);
	98	$data[] = substr ($read, 0, strlen($read)-$difference);
	99	$read = substr ($read, strlen($read)-$difference, strlen($read));
	100	break;
	101	} else {
	102	$data[] = $read;
	103	$read = fgets($imap_stream, 9096);
	104	while (strpos($read, "\n") === false) {
f1e6f580	105	$read .= fgets($imap_stream, 9096);
9c737111	106	}
	107	}
	108	$total_size += strlen($read);
4f5c1bcb	109	} else {
9c737111	110	if (ereg("^$pre (OK\|BAD\|NO)(.*)", $read, $regs) \|\|
55412053	111	(($size == -1) && ereg("^\\* [0-9]+ FETCH.*", $read, $regs))) {
9c737111	112	break;
	113	} else {
	114	$data[] = $read;
	115	$read = fgets ($imap_stream, 9096);
	116	}
4f5c1bcb	117	}
9c737111	118	}
	119
	120	while (($more_msgs = !ereg("^$pre (OK\|BAD\|NO)(.*)$", $read, $regs)) &&
	121	!ereg("^\\* [0-9]+ FETCH.*", $read, $regs)) {
91f68e94	122	$read = fgets($imap_stream, 9096);
9c737111	123	}
	124	$resultlist[] = $data;
	125	}
	126	$response = $regs[1];
	127	$message = trim($regs[2]);
	128
	129	if ($handle_errors == false) { return $resultlist; }
	130
	131	if ($response == 'NO') {
	132	// ignore this error from m$ exchange, it is not fatal (aka bug)
	133	if (strstr($message, 'command resulted in') === false) {
441f2d33	134	set_up_language($squirrelmail_language);
9c737111	135	echo "<br><b><font color=$color[2]>\n" .
	136	_("ERROR : Could not complete request.") .
	137	"</b><br>\n" .
	138	_("Reason Given: ") .
	139	$message . "</font><br>\n";
052e0c26	140	exit;
9c737111	141	}
	142	} else if ($response == 'BAD') {
	143	set_up_language($squirrelmail_language);
	144	echo "<br><b><font color=$color[2]>\n" .
	145	_("ERROR : Bad or malformed request.") .
	146	"</b><br>\n" .
	147	_("Server responded: ") .
	148	$message . "</font><br>\n";
	149	exit;
	150	}
	151	return $resultlist;
	152	}
	153
	154	function sqimap_read_data ($imap_stream, $pre, $handle_errors, &$response, &$message) {
	155
	156	$res = sqimap_read_data_list($imap_stream, $pre, $handle_errors, $response, $message);
	157	return $res[0];
	158
	159	}
	160
	161	/******************************************************************************
	162	** Logs the user into the imap server. If $hide is set, no error messages
	163	** will be displayed. This function returns the imap connection handle.
	164	******************************************************************************/
	165	function sqimap_login ($username, $password, $imap_server_address, $imap_port, $hide) {
	166
	167	global $color, $squirrelmail_language, $HTTP_ACCEPT_LANGUAGE, $onetimepad;
	168
	169	$imap_stream = fsockopen ( $imap_server_address, $imap_port,
	170	$error_number, $error_string, 15);
	171	if ( !$imap_stream ) {
	172	return FALSE;
	173	}
	174	$server_info = fgets ($imap_stream, 1024);
	175
	176	// Decrypt the password
	177	$password = OneTimePadDecrypt($password, $onetimepad);
	178
	179	/ Do some error correction /
	180	if (!$imap_stream) {
	181	if (!$hide) {
441f2d33	182	set_up_language($squirrelmail_language, true);
1b187352	183	printf (_("Error connecting to IMAP server: %s.")."<br>\r\n", $imap_server_address);
052e0c26	184	echo "$error_number : $error_string<br>\r\n";
9c737111	185	}
	186	exit;
	187	}
052e0c26	188
1c72b151	189	$query = 'LOGIN "' . quoteIMAP($username) . '" "' . quoteIMAP($password) . '"';
1c72b151	190	$read = sqimap_run_command ($imap_stream, $query, false, $response, $message);
052e0c26	191
9c737111	192	/ If the connection was not successful, lets see why /
	193	if ($response != 'OK') {
	194	if (!$hide) {
74424a43	195	if ($response != 'NO') {
9c737111	196	// "BAD" and anything else gets reported here.
	197	set_up_language($squirrelmail_language, true);
	198	if ($response == 'BAD') {
3d2504a1	199	printf (_("Bad request: %s")."<br>\r\n", $message);
9c737111	200	} else {
3d2504a1	201	printf (_("Unknown error: %s") . "<br>\n", $message);
9c737111	202	}
	203	echo '<br>' . _("Read data:") . "<br>\n";
	204	if (is_array($read)) {
	205	foreach ($read as $line) {
	206	echo htmlspecialchars($line) . "<br>\n";
	207	}
	208	}
	209	exit;
165e24a7	210	} else {
1c72b151	211	/* If the user does not log in with the correct
	212	* username and password it is not possible to get the
	213	* correct locale from the user's preferences.
	214	* Therefore, apply the same hack as on the login
	215	* screen.
	216	*/
9c737111	217
1c72b151	218	/* $squirrelmail_language is set by a cookie when
	219	* the user selects language and logs out
	220	*/
9c737111	221
	222	set_up_language($squirrelmail_language, true);
	223
	224	displayHtmlHeader( _("Unknown user or password incorrect.") );
	225	echo "<body bgcolor=\"#ffffff\">\n";
	226	error_username_password_incorrect();
	227	session_destroy();
	228	exit;
052e0c26	229	}
9c737111	230	} else {
052e0c26	231	exit;
9c737111	232	}
	233	}
	234
	235	return $imap_stream;
	236	}
f1e6f580	237
9c737111	238	/*
	239	* Simply logs out the imap session
	240	*/
	241	function sqimap_logout ($imap_stream) {
1c72b151	242	/* Logout is not valid until the server returns 'BYE' */
1c72b151	243	sqimap_run_command($imap_stream, 'LOGOUT', false, $response, $message);
9c737111	244	}
	245
	246	function sqimap_capability($imap_stream, $capability) {
	247	global $sqimap_capabilities;
	248
	249	if (!is_array($sqimap_capabilities)) {
1c72b151	250	$read = sqimap_run_command($imap_stream, 'CAPABILITY', true, $a, $b);
1c72b151	251
9c737111	252	$c = explode(' ', $read[0]);
	253	for ($i=2; $i < count($c); $i++) {
	254	$cap_list = explode('=', $c[$i]);
	255	if (isset($cap_list[1]))
	256	$sqimap_capabilities[$cap_list[0]] = $cap_list[1];
	257	else
	258	$sqimap_capabilities[$cap_list[0]] = TRUE;
f1e6f580	259	}
9c737111	260	}
9c737111	261	if (! isset($sqimap_capabilities[$capability])) {
f1e6f580	262	return false;
9c737111	263	} else {
f1e6f580	264	return $sqimap_capabilities[$capability];
f1e6f580	265	}
9c737111	266	}
	267
	268	/******************************************************************************
	269	** Returns the delimeter between mailboxes: INBOX/Test, or INBOX.Test...
	270	******************************************************************************/
	271	function sqimap_get_delimiter ($imap_stream = false) {
	272
	273	global $sqimap_delimiter;
	274	global $optional_delimiter;
	275
	276	/* Use configured delimiter if set */
	277	if((!empty($optional_delimiter)) && $optional_delimiter != 'detect') {
	278	return $optional_delimiter;
	279	}
	280
	281	/* Do some caching here */
	282	if (!$sqimap_delimiter) {
	283	if (sqimap_capability($imap_stream, 'NAMESPACE')) {
f1e6f580	284	/* According to something that I can't find, this is supposed to work on all systems
	285	OS: This won't work in Courier IMAP.
	286	OS: According to rfc2342 response from NAMESPACE command is:
	287	OS: * NAMESPACE (PERSONAL NAMESPACES) (OTHER_USERS NAMESPACE) (SHARED NAMESPACES)
	288	OS: We want to lookup all personal NAMESPACES...
	289	*/
1c72b151	290	$read = sqimap_run_command($imap_stream, 'NAMESPACE', true, $a, $b);
f1e6f580	291	if (eregi('\\* NAMESPACE +(\\( \\(.+\\) \\)\|NIL) +(\\( \\(.+\\) \\)\|NIL) +(\\( \\(.+\\) \\)\|NIL)', $read[0], $data)) {
9c737111	292	if (eregi('^\\( \\((.)\\) *\\)', $data[1], $data2)) {
f1e6f580	293	$pn = $data2[1];
9c737111	294	}
f1e6f580	295	$pna = explode(')(', $pn);
9c737111	296	while (list($k, $v) = each($pna)) {
862ff2d3	297	$lst = explode('"', $v);
	298	if (isset($lst[3])) {
	299	$pn[$lst[1]] = $lst[3];
	300	} else {
74424a43	301	$pn[$lst[1]] = '';
862ff2d3	302	}
f1e6f580	303	}
	304	}
	305	$sqimap_delimiter = $pn[0];
	306	} else {
	307	fputs ($imap_stream, ". LIST \"INBOX\" \"\"\r\n");
	308	$read = sqimap_read_data($imap_stream, '.', true, $a, $b);
	309	$quote_position = strpos ($read[0], '"');
	310	$sqimap_delimiter = substr ($read[0], $quote_position+1, 1);
	311	}
	312	}
	313	return $sqimap_delimiter;
9c737111	314	}
052e0c26	315
052e0c26	316
9c737111	317	/*
	318	* Gets the number of messages in the current mailbox.
	319	*/
	320	function sqimap_get_num_messages ($imap_stream, $mailbox) {
	321
41600f7d	322	$read_ary = sqimap_run_command ($imap_stream, "EXAMINE \"$mailbox\"", true, $result, $message);
9c737111	323	for ($i = 0; $i < count($read_ary); $i++) {
	324	if (ereg("[^ ]+ +([^ ]+) +EXISTS", $read_ary[$i], $regs)) {
	325	return $regs[1];
	326	}
	327	}
	328	return sprintf( "BUG! Couldn't get number of messages in %s!", $mailbox );
	329
	330	}
	331
	332
	333	/*
	334	* Returns a displayable email address
	335	*/
	336	function sqimap_find_email ($string) {
	337	/** Luke Ehresman <lehresma@css.tayloru.edu>
	338	** <lehresma@css.tayloru.edu>
	339	** lehresma@css.tayloru.edu
	340	**
	341	** What about
	342	** lehresma@css.tayloru.edu (Luke Ehresman)
	343	**/
	344
	345	if (ereg("<([^>]+)>", $string, $regs)) {
	346	$string = $regs[1];
	347	}
	348	return trim($string);
	349	}
	350
	351
	352	/*
6282af09	353	* Takes the From: field, and creates a displayable name.
	354	* Luke Ehresman <lkehresman@yahoo.com>
	355	* "Luke Ehresman" <lkehresman@yahoo.com>
	356	* lkehresman@yahoo.com (Luke Ehresman)
	357	* become: Luke Ehresman
	358	* <lkehresman@yahoo.com>
	359	* becomes: lkehresman@yahoo.com
	360	*/
9c737111	361	function sqimap_find_displayable_name ($string) {
6282af09	362	$string = trim($string);
6282af09	363
7e3de682	364	if ( ereg('^(.+)<.*>', $string, $regs) ) {
	365	$string = ereg_replace ('"', '', $regs[1] );
	366	}
	367	elseif ( ereg('\((.*)\)', $string, $regs) ) {
9e9c63e4	368	if( ( $regs[1] == '' ) \|\| ( $regs[1] == ' ' ) ){
	369	if ( ereg('^(.+) \(', $string, $regs) ) {
	370	$string = ereg_replace( ' \(\)$', '', $string );
	371	} else {
	372	$string = '&nbsp';
	373	}
	374	} else {
	375	$string = $regs[1];
	376	}
7e3de682	377	}
	378	else {
	379	$string = sqimap_find_email($string);
9c737111	380	}
9c737111	381
7e3de682	382	return trim($string);
	383	}
	384
9c737111	385	/*
	386	* Returns the number of unseen messages in this folder
	387	*/
	388	function sqimap_unseen_messages ($imap_stream, $mailbox) {
	389	//fputs ($imap_stream, sqimap_session_id() . " SEARCH UNSEEN NOT DELETED\r\n");
1a16af11	390	$read_ary = sqimap_run_command ($imap_stream, "STATUS \"$mailbox\" (UNSEEN)", true, $result, $message);
9c737111	391	ereg("UNSEEN ([0-9]+)", $read_ary[0], $regs);
	392	return $regs[1];
	393	}
	394
	395
	396	/*
	397	* Saves a message to a given folder -- used for saving sent messages
	398	*/
	399	function sqimap_append ($imap_stream, $sent_folder, $length) {
	400	fputs ($imap_stream, sqimap_session_id() . " APPEND \"$sent_folder\" (\\Seen) \{$length}\r\n");
1c72b151	401	$tmp = fgets ($imap_stream, 1024);
9c737111	402	}
	403
	404	function sqimap_append_done ($imap_stream) {
	405	fputs ($imap_stream, "\r\n");
	406	$tmp = fgets ($imap_stream, 1024);
	407	}
	408
15e6162e	409	?>