[squirrelmail.git] / functions / global.php

<?php

/**
 * global.php
 *
 * This includes code to update < 4.1.0 globals to the newer format
 * It also has some session register functions that work across various
 * php versions.
 *
 * @copyright &copy; 1999-2006 The SquirrelMail Project Team
 * @license http://opensource.org/licenses/gpl-license.php GNU Public License
 * @version $Id$
 * @package squirrelmail
 */

/**
 */
define('SQ_INORDER',0);
define('SQ_GET',1);
define('SQ_POST',2);
define('SQ_SESSION',3);
define('SQ_COOKIE',4);
define('SQ_SERVER',5);
define('SQ_FORM',6);


/**
 * returns true if current php version is at mimimum a.b.c
 *
 * Called: check_php_version(4,1)
 * @param int a major version number
 * @param int b minor version number
 * @param int c release number
 * @return bool
 */
function check_php_version ($a = '0', $b = '0', $c = '0')
{
    return version_compare ( PHP_VERSION, "$a.$b.$c", 'ge' );
}

/**
 * returns true if the current internal SM version is at minimum a.b.c
 * These are plain integer comparisons, as our internal version is
 * constructed by us, as an array of 3 ints.
 *
 * Called: check_sm_version(1,3,3)
 * @param int a major version number
 * @param int b minor version number
 * @param int c release number
 * @return bool
 */
function check_sm_version($a = 0, $b = 0, $c = 0)
{
    global $SQM_INTERNAL_VERSION;
    if ( !isset($SQM_INTERNAL_VERSION) ||
         $SQM_INTERNAL_VERSION[0] < $a ||
         ( $SQM_INTERNAL_VERSION[0] == $a &&
           $SQM_INTERNAL_VERSION[1] < $b) ||
         ( $SQM_INTERNAL_VERSION[0] == $a &&
           $SQM_INTERNAL_VERSION[1] == $b &&
           $SQM_INTERNAL_VERSION[2] < $c ) ) {
        return FALSE;
    }
    return TRUE;
}


/**
 * Recursively strip slashes from the values of an array.
 * @param array array the array to strip, passed by reference
 * @return void
 */
function sqstripslashes(&$array) {
    if(count($array) > 0) {
        foreach ($array as $index=>$value) {
            if (is_array($array[$index])) {
                sqstripslashes($array[$index]);
            }
            else {
                $array[$index] = stripslashes($value);
            }
        }
    }
}

/**
 * Add a variable to the session.
 * @param mixed $var the variable to register
 * @param string $name the name to refer to this variable
 * @return void
 */
function sqsession_register ($var, $name) {

    sqsession_is_active();

    $_SESSION["$name"] = $var;

    session_register("$name");
}

/**
 * Delete a variable from the session.
 * @param string $name the name of the var to delete
 * @return void
 */
function sqsession_unregister ($name) {

    sqsession_is_active();

    unset($_SESSION[$name]);

    session_unregister("$name");
}

/**
 * Checks to see if a variable has already been registered
 * in the session.
 * @param string $name the name of the var to check
 * @return bool whether the var has been registered
 */
function sqsession_is_registered ($name) {
    $test_name = &$name;
    $result = false;

    if (isset($_SESSION[$test_name])) {
        $result = true;
    }

    return $result;
}

/**
 * Search for the var $name in $_SESSION, $_POST, $_GET, $_COOKIE, or $_SERVER
 * and set it in provided var.
 *
 * If $search is not provided, or if it is SQ_INORDER, it will search $_SESSION,
 * then $_POST, then $_GET. If $search is SQ_FORM it will search $_POST and
 * $_GET.  Otherwise, use one of the defined constants to look for a var in one
 * place specifically.
 *
 * Note: $search is an int value equal to one of the constants defined above.
 *
 * Example:
 * sqgetGlobalVar('username',$username,SQ_SESSION);
 * // No quotes around last param, it's a constant - not a string!
 *
 * @param string name the name of the var to search
 * @param mixed value the variable to return
 * @param int search constant defining where to look
 * @param int typecast force variable to be cast to given type (please
 *                     use SQ_TYPE_XXX constants or set to FALSE (default)
 *                     to leave variable type unmolested)
 * @return bool whether variable is found.
 */
function sqgetGlobalVar($name, &$value, $search = SQ_INORDER, $default = NULL, $typecast = false) {

    $result = false;

    switch ($search) {
        /* we want the default case to be first here,
           so that if a valid value isn't specified,
           all three arrays will be searched. */
      default:
      case SQ_INORDER: // check session, post, get
      case SQ_SESSION:
        if( isset($_SESSION[$name]) ) {
            $value = $_SESSION[$name];
            $result = TRUE;
            break;
        } elseif ( $search == SQ_SESSION ) {
            break;
        }
      case SQ_FORM:   // check post, get
      case SQ_POST:
        if( isset($_POST[$name]) ) {
            $value = $_POST[$name];
            $result = TRUE;
            break;
        } elseif ( $search == SQ_POST ) {
          break;
        }
      case SQ_GET:
        if ( isset($_GET[$name]) ) {
            $value = $_GET[$name];
            $result = TRUE;
            break;
        }
        /* NO IF HERE. FOR SQ_INORDER CASE, EXIT after GET */
        break;
      case SQ_COOKIE:
        if ( isset($_COOKIE[$name]) ) {
            $value = $_COOKIE[$name];
            $result = TRUE;
            break;
        }
        break;
      case SQ_SERVER:
        if ( isset($_SERVER[$name]) ) {
            $value = $_SERVER[$name];
            $result = TRUE;
            break;
        }
        break;
    }
    if ($result && $typecast) {
        switch ($typecast) {
            case SQ_TYPE_INT: $value = (int) $value; break;
            case SQ_TYPE_STRING: $value = (string) $value; break;
            case SQ_TYPE_BOOL: $value = (bool) $value; break;
            default: break;
        }
    } else if (!is_null($default)) {
        $value = $default;
    }
    return $result;
}

/**
 * Deletes an existing session, more advanced than the standard PHP
 * session_destroy(), it explicitly deletes the cookies and global vars.
 */
function sqsession_destroy() {

    /*
     * php.net says we can kill the cookie by setting just the name:
     * http://www.php.net/manual/en/function.setcookie.php
     * maybe this will help fix the session merging again.
     *
     * Changed the theory on this to kill the cookies first starting
     * a new session will provide a new session for all instances of
     * the browser, we don't want that, as that is what is causing the
     * merging of sessions.
     */

    global $base_uri;

    if (isset($_COOKIE[session_name()])) sqsetcookie(session_name(), '', 0, $base_uri);
    if (isset($_COOKIE['username'])) sqsetcookie('username','',0,$base_uri);
    if (isset($_COOKIE['key'])) sqsetcookie('key','',0,$base_uri);

    $sessid = session_id();
    if (!empty( $sessid )) {
        $_SESSION = array();
        @session_destroy();
    }
}

/**
 * Function to verify a session has been started.  If it hasn't
 * start a session up.  php.net doesn't tell you that $_SESSION
 * (even though autoglobal), is not created unless a session is
 * started, unlike $_POST, $_GET and such
 */
function sqsession_is_active() {
    $sessid = session_id();
    if ( empty( $sessid ) ) {
        sqsession_start();
    }
}

/**
 * Function to start the session and store the cookie with the session_id as
 * HttpOnly cookie which means that the cookie isn't accessible by javascript
 * (IE6 only)
 */
function sqsession_start() {
    global $base_uri;

    session_start();
    $session_id = session_id();

    // session_starts sets the sessionid cookie buth without the httponly var
    // setting the cookie again sets the httponly cookie attribute

    // disable, @see sqsetcookie and php 5.1.2
    // sqsetcookie(session_name(),session_id(),false,$base_uri);
}


/**
 * Set a cookie
 * @param string  $sName     The name of the cookie.
 * @param string  $sValue    The value of the cookie.
 * @param int     $iExpire   The time the cookie expires. This is a Unix timestamp so is in number of seconds since the epoch.
 * @param string  $sPath     The path on the server in which the cookie will be available on.
 * @param string  $sDomain   The domain that the cookie is available.
 * @param boolean $bSecure   Indicates that the cookie should only be transmitted over a secure HTTPS connection.
 * @param boolean $bHttpOnly Disallow JS to access the cookie (IE6 only)
 * @return void
 */
function sqsetcookie($sName,$sValue,$iExpire=false,$sPath="",$sDomain="",$bSecure=false,$bHttpOnly=true,$bFlush=false) {
    static $sCookieCache;
    if (!isset($sCache)) {
        $sCache = '';
    }
    /**
     * We have to send all cookies with one header call otherwise we loose cookies.
     * In order to achieve that the sqsetcookieflush function calls this function with $bFlush = true.
     * If that happens we send the cookie header.
     */
    if ($bFlush) {
        // header($sCookieCache);
        return;
    }
    if (!$sName) return;

    // php 5.1.2 and 4.4.2 do not allow to send multiple headers at once.
    // Because that's the only way to get this thing working we fallback to
    // setcookie until we solved this
    if ($iExpire===false) $iExpire = 0;
    setcookie($sName, $sValue, $iExpire, $sPath);
    return;

    $sHeader = "Set-Cookie: $sName=$sValue";
    if ($sPath) {
        $sHeader .= "; path=$sPath";
    }
    if ($iExpire !== false) {
        $sHeader .= "; Max-Age=$iExpire";
        // php uses Expire header, also add the expire header
        $sHeader .= "; expires=". gmdate('D, d-M-Y H:i:s T',$iExpire);
    }
    if ($sDomain) {
        $sHeader .= "; Domain=$sDomain";
    }
    // TODO: IE for Mac (5.2) thinks that semicolon is part of cookie domain
    if ($bSecure) {
        $sHeader .= "; Secure";
    }
    if ($bHttpOnly) {
        $sHeader .= "; HttpOnly";
    }
    // $sHeader .= "; Version=1";
    $sCookieCache .= $sHeader ."\r\n";
    //header($sHeader."\r\n");
}

/**
 * Send the cookie header
 *
 * Cookies set with sqsetcookie will bet set after a sqsetcookieflush call.
 * @return void
 */
function sqsetcookieflush() {
    sqsetcookie('','','','','','','',true);
}

/**
 * session_regenerate_id replacement for PHP < 4.3.2
 *
 * This code is borrowed from Gallery, session.php version 1.53.2.1
 */
if (!function_exists('session_regenerate_id')) {
    function make_seed() {
        list($usec, $sec) = explode(' ', microtime());
        return (float)$sec + ((float)$usec * 100000);
    }

    function php_combined_lcg() {
        mt_srand(make_seed());
        $tv = gettimeofday();
        $lcg['s1'] = $tv['sec'] ^ (~$tv['usec']);
        $lcg['s2'] = mt_rand();
        $q = (int) ($lcg['s1'] / 53668);
        $lcg['s1'] = (int) (40014 * ($lcg['s1'] - 53668 * $q) - 12211 * $q);
        if ($lcg['s1'] < 0) {
            $lcg['s1'] += 2147483563;
        }
        $q = (int) ($lcg['s2'] / 52774);
        $lcg['s2'] = (int) (40692 * ($lcg['s2'] - 52774 * $q) - 3791 * $q);
        if ($lcg['s2'] < 0) {
            $lcg['s2'] += 2147483399;
        }
        $z = (int) ($lcg['s1'] - $lcg['s2']);
        if ($z < 1) {
            $z += 2147483562;
        }
        return $z * 4.656613e-10;
    }

    function session_regenerate_id() {
        global $base_uri;
        $tv = gettimeofday();
        sqgetGlobalVar('REMOTE_ADDR',$remote_addr,SQ_SERVER);
        $buf = sprintf("%.15s%ld%ld%0.8f", $remote_addr, $tv['sec'], $tv['usec'], php_combined_lcg() * 10);
        session_id(md5($buf));
        if (ini_get('session.use_cookies')) {
            // at a later stage we use sqsetcookie. At this point just do
            // what session_regenerate_id would do
            setcookie(session_name(), session_id(), NULL, $base_uri);
        }
        return TRUE;
    }
}


/**
 * php_self
 *
 * Creates an URL for the page calling this function, using either the PHP global
 * REQUEST_URI, or the PHP global PHP_SELF with QUERY_STRING added. Before 1.5.1
 * function was stored in function/strings.php.
 *
 * @return string the complete url for this page
 * @since 1.2.3
 */
function php_self () {
    if ( sqgetGlobalVar('REQUEST_URI', $req_uri, SQ_SERVER) && !empty($req_uri) ) {
      return $req_uri;
    }

    if ( sqgetGlobalVar('PHP_SELF', $php_self, SQ_SERVER) && !empty($php_self) ) {

      // need to add query string to end of PHP_SELF to match REQUEST_URI
      //
      if ( sqgetGlobalVar('QUERY_STRING', $query_string, SQ_SERVER) && !empty($query_string) ) {
         $php_self .= '?' . $query_string;
      }

      return $php_self;
    }

    return '';
}
Commit	Line	Data
61d9ec71	1	<?php
	2
	3	/**
0c701a88	4	* global.php
61d9ec71	5	*
62f7daa5	6	* This includes code to update < 4.1.0 globals to the newer format
242342d0	7	* It also has some session register functions that work across various
62f7daa5	8	* php versions.
61d9ec71	9	*
47ccfad4	10	* @copyright © 1999-2006 The SquirrelMail Project Team
4b4abf93	11	* @license http://opensource.org/licenses/gpl-license.php GNU Public License
31841a9e	12	* @version $Id$
d6c32258	13	* @package squirrelmail
61d9ec71	14	*/
61d9ec71	15
051f6245	16	/**
2ca4c65a	17	*/
7f62aaef	18	define('SQ_INORDER',0);
	19	define('SQ_GET',1);
	20	define('SQ_POST',2);
	21	define('SQ_SESSION',3);
	22	define('SQ_COOKIE',4);
	23	define('SQ_SERVER',5);
	24	define('SQ_FORM',6);
a32985a5	25
202bcbcc	26
62f7daa5	27	/**
	28	* returns true if current php version is at mimimum a.b.c
	29	*
97bdc607	30	* Called: check_php_version(4,1)
8b096f0a	31	* @param int a major version number
	32	* @param int b minor version number
	33	* @param int c release number
	34	* @return bool
97bdc607	35	*/
62f7daa5	36	function check_php_version ($a = '0', $b = '0', $c = '0')
9697c5ab	37	{
5673cabe	38	return version_compare ( PHP_VERSION, "$a.$b.$c", 'ge' );
9697c5ab	39	}
9697c5ab	40
97bdc607	41	/**
62f7daa5	42	* returns true if the current internal SM version is at minimum a.b.c
62f7daa5	43	* These are plain integer comparisons, as our internal version is
97bdc607	44	* constructed by us, as an array of 3 ints.
	45	*
	46	* Called: check_sm_version(1,3,3)
8b096f0a	47	* @param int a major version number
	48	* @param int b minor version number
	49	* @param int c release number
	50	* @return bool
97bdc607	51	*/
	52	function check_sm_version($a = 0, $b = 0, $c = 0)
	53	{
	54	global $SQM_INTERNAL_VERSION;
	55	if ( !isset($SQM_INTERNAL_VERSION) \|\|
	56	$SQM_INTERNAL_VERSION[0] < $a \|\|
150c28d6	57	( $SQM_INTERNAL_VERSION[0] == $a &&
	58	$SQM_INTERNAL_VERSION[1] < $b) \|\|
	59	( $SQM_INTERNAL_VERSION[0] == $a &&
	60	$SQM_INTERNAL_VERSION[1] == $b &&
97bdc607	61	$SQM_INTERNAL_VERSION[2] < $c ) ) {
97bdc607	62	return FALSE;
62f7daa5	63	}
62f7daa5	64	return TRUE;
97bdc607	65	}
	66
	67
8b096f0a	68	/**
	69	* Recursively strip slashes from the values of an array.
	70	* @param array array the array to strip, passed by reference
	71	* @return void
	72	*/
a32985a5	73	function sqstripslashes(&$array) {
3aa17cf9	74	if(count($array) > 0) {
	75	foreach ($array as $index=>$value) {
	76	if (is_array($array[$index])) {
	77	sqstripslashes($array[$index]);
	78	}
	79	else {
	80	$array[$index] = stripslashes($value);
	81	}
a32985a5	82	}
	83	}
	84	}
	85
8b096f0a	86	/**
	87	* Add a variable to the session.
	88	* @param mixed $var the variable to register
	89	* @param string $name the name to refer to this variable
	90	* @return void
	91	*/
61d9ec71	92	function sqsession_register ($var, $name) {
281c3d5b	93
	94	sqsession_is_active();
	95
62f7daa5	96	$_SESSION["$name"] = $var;
62f7daa5	97
dcc1cc82	98	session_register("$name");
61d9ec71	99	}
3aa17cf9	100
8b096f0a	101	/**
	102	* Delete a variable from the session.
	103	* @param string $name the name of the var to delete
	104	* @return void
	105	*/
61d9ec71	106	function sqsession_unregister ($name) {
281c3d5b	107
	108	sqsession_is_active();
	109
abd74f7d	110	unset($_SESSION[$name]);
62f7daa5	111
dcc1cc82	112	session_unregister("$name");
61d9ec71	113	}
3aa17cf9	114
8b096f0a	115	/**
	116	* Checks to see if a variable has already been registered
	117	* in the session.
	118	* @param string $name the name of the var to check
	119	* @return bool whether the var has been registered
	120	*/
d7c82551	121	function sqsession_is_registered ($name) {
	122	$test_name = &$name;
	123	$result = false;
62f7daa5	124
abd74f7d	125	if (isset($_SESSION[$test_name])) {
abd74f7d	126	$result = true;
d7c82551	127	}
62f7daa5	128
d7c82551	129	return $result;
	130	}
	131
4cd8ae7d	132	/**
2d055f0a	133	* Search for the var $name in $_SESSION, $_POST, $_GET, $_COOKIE, or $_SERVER
2d055f0a	134	* and set it in provided var.
d1975c5b	135	*
2d055f0a	136	* If $search is not provided, or if it is SQ_INORDER, it will search $_SESSION,
	137	* then $_POST, then $_GET. If $search is SQ_FORM it will search $_POST and
	138	* $_GET. Otherwise, use one of the defined constants to look for a var in one
	139	* place specifically.
d1975c5b	140	*
2d055f0a	141	* Note: $search is an int value equal to one of the constants defined above.
d1975c5b	142	*
2d055f0a	143	* Example:
	144	* sqgetGlobalVar('username',$username,SQ_SESSION);
	145	* // No quotes around last param, it's a constant - not a string!
d1975c5b	146	*
8b096f0a	147	* @param string name the name of the var to search
	148	* @param mixed value the variable to return
	149	* @param int search constant defining where to look
c2b585c5	150	* @param int typecast force variable to be cast to given type (please
	151	* use SQ_TYPE_XXX constants or set to FALSE (default)
	152	* to leave variable type unmolested)
8b096f0a	153	* @return bool whether variable is found.
4cd8ae7d	154	*/
202bcbcc	155	function sqgetGlobalVar($name, &$value, $search = SQ_INORDER, $default = NULL, $typecast = false) {
	156
	157	$result = false;
f79c19a4	158
4cd8ae7d	159	switch ($search) {
62f7daa5	160	/* we want the default case to be first here,
051f6245	161	so that if a valid value isn't specified,
051f6245	162	all three arrays will be searched. */
d1975c5b	163	default:
d9ad2525	164	case SQ_INORDER: // check session, post, get
d1975c5b	165	case SQ_SESSION:
d1975c5b	166	if( isset($_SESSION[$name]) ) {
4cd8ae7d	167	$value = $_SESSION[$name];
202bcbcc	168	$result = TRUE;
202bcbcc	169	break;
d1975c5b	170	} elseif ( $search == SQ_SESSION ) {
	171	break;
	172	}
d9ad2525	173	case SQ_FORM: // check post, get
d1975c5b	174	case SQ_POST:
d1975c5b	175	if( isset($_POST[$name]) ) {
4cd8ae7d	176	$value = $_POST[$name];
202bcbcc	177	$result = TRUE;
202bcbcc	178	break;
d1975c5b	179	} elseif ( $search == SQ_POST ) {
27d0841c	180	break;
d1975c5b	181	}
	182	case SQ_GET:
	183	if ( isset($_GET[$name]) ) {
	184	$value = $_GET[$name];
202bcbcc	185	$result = TRUE;
202bcbcc	186	break;
62f7daa5	187	}
d1975c5b	188	/* NO IF HERE. FOR SQ_INORDER CASE, EXIT after GET */
	189	break;
	190	case SQ_COOKIE:
	191	if ( isset($_COOKIE[$name]) ) {
	192	$value = $_COOKIE[$name];
202bcbcc	193	$result = TRUE;
202bcbcc	194	break;
d1975c5b	195	}
	196	break;
	197	case SQ_SERVER:
d1975c5b	198	if ( isset($_SERVER[$name]) ) {
d1975c5b	199	$value = $_SERVER[$name];
202bcbcc	200	$result = TRUE;
202bcbcc	201	break;
d1975c5b	202	}
d1975c5b	203	break;
4cd8ae7d	204	}
202bcbcc	205	if ($result && $typecast) {
202bcbcc	206	switch ($typecast) {
c2b585c5	207	case SQ_TYPE_INT: $value = (int) $value; break;
	208	case SQ_TYPE_STRING: $value = (string) $value; break;
	209	case SQ_TYPE_BOOL: $value = (bool) $value; break;
202bcbcc	210	default: break;
	211	}
	212	} else if (!is_null($default)) {
	213	$value = $default;
	214	}
	215	return $result;
4cd8ae7d	216	}
4cd8ae7d	217
8b096f0a	218	/**
	219	* Deletes an existing session, more advanced than the standard PHP
	220	* session_destroy(), it explicitly deletes the cookies and global vars.
	221	*/
513db22c	222	function sqsession_destroy() {
242342d0	223
281c3d5b	224	/*
	225	* php.net says we can kill the cookie by setting just the name:
	226	* http://www.php.net/manual/en/function.setcookie.php
	227	* maybe this will help fix the session merging again.
	228	*
	229	* Changed the theory on this to kill the cookies first starting
	230	* a new session will provide a new session for all instances of
	231	* the browser, we don't want that, as that is what is causing the
	232	* merging of sessions.
	233	*/
242342d0	234
f9902ccb	235	global $base_uri;
f31687f6	236
3a1de9f1	237	if (isset($_COOKIE[session_name()])) sqsetcookie(session_name(), '', 0, $base_uri);
	238	if (isset($_COOKIE['username'])) sqsetcookie('username','',0,$base_uri);
	239	if (isset($_COOKIE['key'])) sqsetcookie('key','',0,$base_uri);
281c3d5b	240
	241	$sessid = session_id();
	242	if (!empty( $sessid )) {
abd74f7d	243	$_SESSION = array();
21e18f59	244	@session_destroy();
242342d0	245	}
281c3d5b	246	}
242342d0	247
8b096f0a	248	/**
281c3d5b	249	* Function to verify a session has been started. If it hasn't
	250	* start a session up. php.net doesn't tell you that $_SESSION
	251	* (even though autoglobal), is not created unless a session is
	252	* started, unlike $_POST, $_GET and such
	253	*/
281c3d5b	254	function sqsession_is_active() {
281c3d5b	255	$sessid = session_id();
281c3d5b	256	if ( empty( $sessid ) ) {
3a1de9f1	257	sqsession_start();
281c3d5b	258	}
513db22c	259	}
513db22c	260
3a1de9f1	261	/**
	262	* Function to start the session and store the cookie with the session_id as
	263	* HttpOnly cookie which means that the cookie isn't accessible by javascript
	264	* (IE6 only)
	265	*/
	266	function sqsession_start() {
202bcbcc	267	global $base_uri;
7f62aaef	268
3a1de9f1	269	session_start();
202bcbcc	270	$session_id = session_id();
202bcbcc	271
3a1de9f1	272	// session_starts sets the sessionid cookie buth without the httponly var
3a1de9f1	273	// setting the cookie again sets the httponly cookie attribute
09569b55	274
	275	// disable, @see sqsetcookie and php 5.1.2
	276	// sqsetcookie(session_name(),session_id(),false,$base_uri);
3a1de9f1	277	}
	278
	279
	280	/**
	281	* Set a cookie
	282	* @param string $sName The name of the cookie.
	283	* @param string $sValue The value of the cookie.
	284	* @param int $iExpire The time the cookie expires. This is a Unix timestamp so is in number of seconds since the epoch.
	285	* @param string $sPath The path on the server in which the cookie will be available on.
	286	* @param string $sDomain The domain that the cookie is available.
	287	* @param boolean $bSecure Indicates that the cookie should only be transmitted over a secure HTTPS connection.
	288	* @param boolean $bHttpOnly Disallow JS to access the cookie (IE6 only)
	289	* @return void
	290	*/
202bcbcc	291	function sqsetcookie($sName,$sValue,$iExpire=false,$sPath="",$sDomain="",$bSecure=false,$bHttpOnly=true,$bFlush=false) {
	292	static $sCookieCache;
	293	if (!isset($sCache)) {
	294	$sCache = '';
	295	}
	296	/**
	297	* We have to send all cookies with one header call otherwise we loose cookies.
	298	* In order to achieve that the sqsetcookieflush function calls this function with $bFlush = true.
	299	* If that happens we send the cookie header.
	300	*/
	301	if ($bFlush) {
09569b55	302	// header($sCookieCache);
202bcbcc	303	return;
202bcbcc	304	}
09569b55	305	if (!$sName) return;
	306
	307	// php 5.1.2 and 4.4.2 do not allow to send multiple headers at once.
	308	// Because that's the only way to get this thing working we fallback to
	309	// setcookie until we solved this
	310	if ($iExpire===false) $iExpire = 0;
	311	setcookie($sName, $sValue, $iExpire, $sPath);
	312	return;
202bcbcc	313
3a1de9f1	314	$sHeader = "Set-Cookie: $sName=$sValue";
3a1de9f1	315	if ($sPath) {
6f9fa51a	316	$sHeader .= "; path=$sPath";
3a1de9f1	317	}
6f9fa51a	318	if ($iExpire !== false) {
3a1de9f1	319	$sHeader .= "; Max-Age=$iExpire";
6f9fa51a	320	// php uses Expire header, also add the expire header
a1ef1d05	321	$sHeader .= "; expires=". gmdate('D, d-M-Y H:i:s T',$iExpire);
3a1de9f1	322	}
	323	if ($sDomain) {
	324	$sHeader .= "; Domain=$sDomain";
	325	}
8ca9f662	326	// TODO: IE for Mac (5.2) thinks that semicolon is part of cookie domain
3a1de9f1	327	if ($bSecure) {
	328	$sHeader .= "; Secure";
	329	}
	330	if ($bHttpOnly) {
	331	$sHeader .= "; HttpOnly";
	332	}
6f9fa51a	333	// $sHeader .= "; Version=1";
202bcbcc	334	$sCookieCache .= $sHeader ."\r\n";
09569b55	335	//header($sHeader."\r\n");
202bcbcc	336	}
	337
	338	/**
	339	* Send the cookie header
	340	*
	341	* Cookies set with sqsetcookie will bet set after a sqsetcookieflush call.
	342	* @return void
	343	*/
	344	function sqsetcookieflush() {
	345	sqsetcookie('','','','','','','',true);
	346	}
	347
	348	/**
	349	* session_regenerate_id replacement for PHP < 4.3.2
	350	*
	351	* This code is borrowed from Gallery, session.php version 1.53.2.1
	352	*/
	353	if (!function_exists('session_regenerate_id')) {
	354	function make_seed() {
	355	list($usec, $sec) = explode(' ', microtime());
	356	return (float)$sec + ((float)$usec * 100000);
	357	}
	358
	359	function php_combined_lcg() {
	360	mt_srand(make_seed());
	361	$tv = gettimeofday();
	362	$lcg['s1'] = $tv['sec'] ^ (~$tv['usec']);
	363	$lcg['s2'] = mt_rand();
	364	$q = (int) ($lcg['s1'] / 53668);
	365	$lcg['s1'] = (int) (40014 * ($lcg['s1'] - 53668 * $q) - 12211 * $q);
	366	if ($lcg['s1'] < 0) {
	367	$lcg['s1'] += 2147483563;
	368	}
	369	$q = (int) ($lcg['s2'] / 52774);
	370	$lcg['s2'] = (int) (40692 * ($lcg['s2'] - 52774 * $q) - 3791 * $q);
	371	if ($lcg['s2'] < 0) {
	372	$lcg['s2'] += 2147483399;
	373	}
	374	$z = (int) ($lcg['s1'] - $lcg['s2']);
	375	if ($z < 1) {
	376	$z += 2147483562;
	377	}
	378	return $z * 4.656613e-10;
	379	}
3a1de9f1	380
202bcbcc	381	function session_regenerate_id() {
	382	global $base_uri;
	383	$tv = gettimeofday();
	384	sqgetGlobalVar('REMOTE_ADDR',$remote_addr,SQ_SERVER);
	385	$buf = sprintf("%.15s%ld%ld%0.8f", $remote_addr, $tv['sec'], $tv['usec'], php_combined_lcg() * 10);
	386	session_id(md5($buf));
	387	if (ini_get('session.use_cookies')) {
	388	// at a later stage we use sqsetcookie. At this point just do
	389	// what session_regenerate_id would do
	390	setcookie(session_name(), session_id(), NULL, $base_uri);
	391	}
	392	return TRUE;
	393	}
3a1de9f1	394	}
7f62aaef	395
202bcbcc	396
7f62aaef	397	/**
	398	* php_self
	399	*
	400	* Creates an URL for the page calling this function, using either the PHP global
	401	* REQUEST_URI, or the PHP global PHP_SELF with QUERY_STRING added. Before 1.5.1
	402	* function was stored in function/strings.php.
	403	*
	404	* @return string the complete url for this page
	405	* @since 1.2.3
	406	*/
	407	function php_self () {
	408	if ( sqgetGlobalVar('REQUEST_URI', $req_uri, SQ_SERVER) && !empty($req_uri) ) {
	409	return $req_uri;
	410	}
	411
	412	if ( sqgetGlobalVar('PHP_SELF', $php_self, SQ_SERVER) && !empty($php_self) ) {
	413
	414	// need to add query string to end of PHP_SELF to match REQUEST_URI
	415	//
	416	if ( sqgetGlobalVar('QUERY_STRING', $query_string, SQ_SERVER) && !empty($query_string) ) {
	417	$php_self .= '?' . $query_string;
	418	}
	419
	420	return $php_self;
	421	}
	422
	423	return '';
	424	}