/**
* global.php
*
- * Copyright (c) 1999-2003 The SquirrelMail Project Team
- * Licensed under the GNU GPL. For full terms see the file COPYING.
- *
- * This includes code to update < 4.1.0 globals to the newer format
+ * 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.
+ * php versions.
*
- * $Id$
+ * @copyright 1999-2020 The SquirrelMail Project Team
+ * @license http://opensource.org/licenses/gpl-license.php GNU Public License
+ * @version $Id$
* @package squirrelmail
*/
-/** Bring in the config file. */
-require_once(SM_PATH . 'config/config.php');
-
-/** set the name of the session cookie */
-if(isset($session_name) && $session_name) {
- ini_set('session.name' , $session_name);
-} else {
- ini_set('session.name' , 'SQMSESSID');
-}
-
-/** If magic_quotes_runtime is on, SquirrelMail breaks in new and creative ways.
- * Force magic_quotes_runtime off.
- * tassium@squirrelmail.org - I put it here in the hopes that all SM code includes this.
- * If there's a better place, please let me know.
- */
-ini_set('magic_quotes_runtime','0');
-
-/* Since we decided all IMAP servers must implement the UID command as defined in
- * the IMAP RFC, we force $uid_support to be on.
+/**
+ * These constants are used in the function sqgetGlobalVar(). See
+ * sqgetGlobalVar() for a description of what they mean.
+ *
+ * @since 1.4.0
*/
+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);
-global $uid_support;
-$uid_support = true;
-
-sqsession_is_active();
-
-/* convert old-style superglobals to current method
- * this is executed if you are running PHP 4.0.x.
- * it is run via a require_once directive in validate.php
- * and redirect.php. Patch submitted by Ray Black.
- */
-
-if ( !check_php_version(4,1) ) {
- global $_COOKIE, $_ENV, $_FILES, $_GET, $_POST, $_SERVER, $_SESSION;
- global $HTTP_COOKIE_VARS, $HTTP_ENV_VARS, $HTTP_POST_FILES, $HTTP_GET_VARS,
- $HTTP_POST_VARS, $HTTP_SERVER_VARS, $HTTP_SESSION_VARS, $PHP_SELF;
- $_COOKIE =& $HTTP_COOKIE_VARS;
- $_ENV =& $HTTP_ENV_VARS;
- $_FILES =& $HTTP_POST_FILES;
- $_GET =& $HTTP_GET_VARS;
- $_POST =& $HTTP_POST_VARS;
- $_SERVER =& $HTTP_SERVER_VARS;
- $_SESSION =& $HTTP_SESSION_VARS;
- if (!isset($PHP_SELF) || empty($PHP_SELF)) {
- $PHP_SELF = $HTTP_SERVER_VARS['PHP_SELF'];
- }
-}
-
-/* if running with magic_quotes_gpc then strip the slashes
- from POST and GET global arrays */
-
-if (get_magic_quotes_gpc()) {
- sqstripslashes($_GET);
- sqstripslashes($_POST);
-}
-
-/* strip any tags added to the url from PHP_SELF.
- This fixes hand crafted url XXS expoits for any
- page that uses PHP_SELF as the FORM action */
-
-$_SERVER['PHP_SELF'] = strip_tags($_SERVER['PHP_SELF']);
-/**
- * returns true if current php version is at mimimum a.b.c
- *
+/**
+ * returns true if current php version is at mimimum a.b.c
+ *
* Called: check_php_version(4,1)
* @param int a major version number
* @param int b minor version number
* @param int c release number
* @return bool
*/
-function check_php_version ($a = '0', $b = '0', $c = '0')
+function check_php_version ($a = '0', $b = '0', $c = '0')
{
- global $SQ_PHP_VERSION;
-
- if(!isset($SQ_PHP_VERSION))
- $SQ_PHP_VERSION = substr( str_pad( preg_replace('/\D/','', PHP_VERSION), 3, '0'), 0, 3);
-
- return $SQ_PHP_VERSION >= ($a.$b.$c);
+ 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
+ * 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)
global $SQM_INTERNAL_VERSION;
if ( !isset($SQM_INTERNAL_VERSION) ||
$SQM_INTERNAL_VERSION[0] < $a ||
- $SQM_INTERNAL_VERSION[1] < $b ||
- ( $SQM_INTERNAL_VERSION[1] == $b &&
+ ( $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;
+ }
+ return TRUE;
}
}
}
+/**
+ * Squelch error output to screen (only) for the given function.
+ * If the SquirrelMail debug mode SM_DEBUG_MODE_ADVANCED is not
+ * enabled, error output will not go to the log, either.
+ *
+ * This provides an alternative to the @ error-suppression
+ * operator where errors will not be shown in the interface
+ * but will show up in the server log file (assuming the
+ * administrator has configured PHP logging).
+ *
+ * @since 1.4.12 and 1.5.2
+ *
+ * @param string $function The function to be executed
+ * @param array $args The arguments to be passed to the function
+ * (OPTIONAL; default no arguments)
+ * NOTE: The caller must take extra action if
+ * the function being called is supposed
+ * to use any of the parameters by
+ * reference. In the following example,
+ * $x is passed by reference and $y is
+ * passed by value to the "my_func"
+ * function.
+ * sq_call_function_suppress_errors('my_func', array(&$x, $y));
+ *
+ * @return mixed The return value, if any, of the function being
+ * executed will be returned.
+ *
+ */
+function sq_call_function_suppress_errors($function, $args=array()) {
+ global $sm_debug_mode;
+
+ $display_errors = ini_get('display_errors');
+ ini_set('display_errors', '0');
+
+ // if advanced debug mode isn't enabled, don't log the error, either
+ //
+ if (!($sm_debug_mode & SM_DEBUG_MODE_ADVANCED))
+ $error_reporting = error_reporting(0);
+
+ $ret = call_user_func_array($function, $args);
+
+ if (!($sm_debug_mode & SM_DEBUG_MODE_ADVANCED))
+ error_reporting($error_reporting);
+
+ ini_set('display_errors', $display_errors);
+ return $ret;
+}
+
/**
* Add a variable to the session.
* @param mixed $var the variable to register
sqsession_is_active();
- if ( !check_php_version(4,1) ) {
- global $HTTP_SESSION_VARS;
- $HTTP_SESSION_VARS[$name] = $var;
- }
- else {
- $_SESSION["$name"] = $var;
- }
- @session_register("$name");
+ $_SESSION[$name] = $var;
}
/**
sqsession_is_active();
- if ( !check_php_version(4,1) ) {
- global $HTTP_SESSION_VARS;
- unset($HTTP_SESSION_VARS[$name]);
- }
- else {
- unset($_SESSION[$name]);
- }
- @session_unregister("$name");
+ unset($_SESSION[$name]);
+
+ // starts throwing warnings in PHP 5.3.0 and is
+ // removed in PHP 6 and is redundant anyway
+ //session_unregister("$name");
}
/**
function sqsession_is_registered ($name) {
$test_name = &$name;
$result = false;
- if ( !check_php_version(4,1) ) {
- global $HTTP_SESSION_VARS;
- if (isset($HTTP_SESSION_VARS[$test_name])) {
- $result = true;
- }
- }
- else {
- if (isset($_SESSION[$test_name])) {
- $result = true;
- }
+
+ if (isset($_SESSION[$test_name])) {
+ $result = true;
}
+
return $result;
}
-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);
+/**
+ * Retrieves a form variable, from a set of possible similarly named
+ * form variables, based on finding a different, single field. This
+ * is intended to allow more than one same-named inputs in a single
+ * <form>, where the submit button that is clicked tells us which
+ * input we should retrieve. An example is if we have:
+ * <select name="startMessage_1">
+ * <select name="startMessage_2">
+ * <input type="submit" name="form_submit_1" />
+ * <input type="submit" name="form_submit_2" />
+ * and we want to know which one of the select inputs should be
+ * returned as $startMessage (without the suffix!), this function
+ * decides by looking for either "form_submit_1" or "form_submit_2"
+ * (both should not appear). In this example, $name should be
+ * "startMessage" and $indicator_field should be "form_submit".
+ *
+ * NOTE that form widgets must be named with the suffix "_1", "_2", "_3"
+ * and so on, or this function will not work.
+ *
+ * If more than one of the indicator fields is found, the first one
+ * (numerically) will win.
+ *
+ * If an indicator field is found without a matching input ($name)
+ * field, FALSE is returned.
+ *
+ * If no indicator fields are found, a field of $name *without* any
+ * suffix is searched for (but only if $fallback_no_suffix is TRUE),
+ * and if not found, FALSE is ultimately returned.
+ *
+ * It should also be possible to use the same string for both
+ * $name and $indicator_field to look for the first possible
+ * widget with a suffix that can be found (and possibly fallback
+ * to a widget without a suffix).
+ *
+ * @param string name the name of the var to search
+ * @param mixed value the variable to return
+ * @param string indicator_field the name of the field upon which to base
+ * our decision upon (see above)
+ * @param int search constant defining where to look
+ * @param bool fallback_no_suffix whether or not to look for $name with
+ * no suffix when nothing else is found
+ * @param mixed default the value to assign to $value when nothing is found
+ * @param int typecast force variable to be cast to given type (please
+ * use SQ_TYPE_XXX constants or set to FALSE (default)
+ * to leave variable type unmolested)
+ *
+ * @return bool whether variable is found.
+ */
+function sqGetGlobalVarMultiple($name, &$value, $indicator_field,
+ $search = SQ_INORDER,
+ $fallback_no_suffix=TRUE, $default=NULL,
+ $typecast=FALSE) {
+
+ // Set arbitrary max limit -- should be much lower except on the
+ // search results page, if there are many (50 or more?) mailboxes
+ // shown, this may not be high enough. Is there some way we should
+ // automate this value?
+ //
+ $max_form_search = 100;
+
+ for ($i = 1; $i <= $max_form_search; $i++) {
+ if (sqGetGlobalVar($indicator_field . '_' . $i, $temp, $search)) {
+ return sqGetGlobalVar($name . '_' . $i, $value, $search, $default, $typecast);
+ }
+ }
+
+
+ // no indicator field found; just try without suffix if allowed
+ //
+ if ($fallback_no_suffix) {
+ return sqGetGlobalVar($name, $value, $search, $default, $typecast);
+ }
+
+
+ // no dice, set default and return FALSE
+ //
+ if (!is_null($default)) {
+ $value = $default;
+ }
+ return FALSE;
+
+}
+
/**
- * Search for the var $name in $_SESSION, $_POST, $_GET,
- * $_COOKIE, or $_SERVER and set it in provided var.
+ * Search for the variable $name in one or more of the global variables
+ * $_SESSION, $_POST, $_GET, $_COOKIE, and $_SERVER, and set the value of it in
+ * the variable $vaule.
*
- * If $search is not provided, or == SQ_INORDER, it will search
- * $_SESSION, then $_POST, then $_GET. Otherwise,
- * use one of the defined constants to look for
- * a var in one place specifically.
+ * $search must be one of the defined constants below. The default is
+ * SQ_INORDER. Both SQ_INORDER and SQ_FORM stops on the first match.
*
- * Note: $search is an int value equal to one of the
- * constants defined above.
+ * SQ_INORDER searches $_SESSION, then $_POST, and then $_GET.
+ * SQ_FORM searches $_POST and then $_GET.
+ * SQ_COOKIE searches $_COOKIE only.
+ * SQ_GET searches $_GET only.
+ * SQ_POST searches $_POST only.
+ * SQ_SERVER searches $_SERVER only.
+ * SQ_SESSION searches $_SESSION only.
*
- * example:
- * sqgetGlobalVar('username',$username,SQ_SESSION);
- * -- no quotes around last param!
+ * Example:
+ * sqgetGlobalVar('username', $username, SQ_SESSION);
+ * // No quotes around the last parameter, 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 mixed default the value to assign to $value when nothing is found
+ * @param int typecast force variable to be cast to given type (please
+ * use SQ_TYPE_XXX constants or set to FALSE (default)
+ * to leave variable type unmolested)
+ *
* @return bool whether variable is found.
*/
-function sqgetGlobalVar($name, &$value, $search = SQ_INORDER) {
-
- if ( !check_php_version(4,1) ) {
- global $HTTP_COOKIE_VARS, $HTTP_GET_VARS, $HTTP_POST_VARS,
- $HTTP_SERVER_VARS, $HTTP_SESSION_VARS;
+function sqgetGlobalVar($name, &$value, $search = SQ_INORDER, $default = NULL, $typecast = FALSE) {
+ // The return value defaults to FALSE, i.e. the variable wasn't found.
+ $result = FALSE;
- $_COOKIE =& $HTTP_COOKIE_VARS;
- $_GET =& $HTTP_GET_VARS;
- $_POST =& $HTTP_POST_VARS;
- $_SERVER =& $HTTP_SERVER_VARS;
- $_SESSION =& $HTTP_SESSION_VARS;
- }
-
- /* NOTE: DO NOT enclose the constants in the switch
- statement with quotes. They are constant values,
- enclosing them in quotes will cause them to evaluate
- as strings. */
+ // Search the global variables to find a match.
switch ($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];
- return TRUE;
- } elseif ( $search == SQ_SESSION ) {
+ default:
+ // The default needs to be first here so SQ_INORDER will be used if
+ // $search isn't a valid constant.
+ case SQ_INORDER:
+ // Search $_SESSION, then $_POST, and then $_GET. Stop on the first
+ // match.
+ case SQ_SESSION:
+ if (isset($_SESSION[$name])) {
+ // If a match is found, set the specified variable to the found
+ // value, indicate a match, and stop the search.
+ $value = $_SESSION[$name];
+ $result = TRUE;
+ break;
+ } elseif ($search == SQ_SESSION) {
+ // Only stop the search if SQ_SESSION is set. SQ_INORDER will
+ // continue with the next clause.
+ break;
+ }
+ case SQ_FORM:
+ // Search $_POST and then $_GET. Stop on the first match.
+ case SQ_POST:
+ if (isset($_POST[$name])) {
+ // If a match is found, set the specified variable to the found
+ // value, indicate a match, and stop the search.
+ $value = $_POST[$name];
+ $result = TRUE;
+ break;
+ } elseif ($search == SQ_POST) {
+ // Only stop the search if SQ_POST is set. SQ_INORDER and
+ // SQ_FORM will continue with the next clause.
+ break;
+ }
+ case SQ_GET:
+ if (isset($_GET[$name])) {
+ // If a match is found, set the specified variable to the found
+ // value, indicate a match, and stop the search.
+ $value = $_GET[$name];
+ $result = TRUE;
+ break;
+ }
+ // Stop the search regardless of if SQ_INORDER, SQ_FORM, or SQ_GET
+ // is set. All three of them ends here.
break;
+ case SQ_COOKIE:
+ if (isset($_COOKIE[$name])) {
+ // If a match is found, set the specified variable to the found
+ // value, indicate a match, and stop the search.
+ $value = $_COOKIE[$name];
+ $result = TRUE;
+ break;
+ }
+ // Stop the search.
+ break;
+ case SQ_SERVER:
+ if (isset($_SERVER[$name])) {
+ // If a match is found, set the specified variable to the found
+ // value, indicate a match, and stop the search.
+ $value = $_SERVER[$name];
+ $result = TRUE;
+ break;
+ }
+ // Stop the search.
+ break;
+ }
+
+ if ($result && $typecast) {
+ // Only typecast if it's requested and a match is found. The default is
+ // not to typecast, which will happen if a valid constant isn't
+ // specified.
+ switch ($typecast) {
+ case SQ_TYPE_INT:
+ // Typecast the value and stop.
+ $value = (int) $value;
+ break;
+ case SQ_TYPE_STRING:
+ // Typecast the value and stop.
+ $value = (string) $value;
+ break;
+ case SQ_TYPE_BOOL:
+ // Typecast the value and stop.
+ $value = (bool) $value;
+ break;
+ case SQ_TYPE_BIGINT:
+ // Typecast the value and stop.
+ $value = (preg_match('/^[0-9]+$/', $value) ? $value : '0');
+ break;
+ default:
+ // The default is to do nothing.
+ break;
}
- case SQ_FORM: // check post, get
- case SQ_POST:
- if( isset($_POST[$name]) ) {
- $value = $_POST[$name];
- return TRUE;
- } elseif ( $search == SQ_POST ) {
- break;
- }
- case SQ_GET:
- if ( isset($_GET[$name]) ) {
- $value = $_GET[$name];
- return TRUE;
- }
- /* NO IF HERE. FOR SQ_INORDER CASE, EXIT after GET */
- break;
- case SQ_COOKIE:
- if ( isset($_COOKIE[$name]) ) {
- $value = $_COOKIE[$name];
- return TRUE;
- }
- break;
- case SQ_SERVER:
- if ( isset($_SERVER[$name]) ) {
- $value = $_SERVER[$name];
- return TRUE;
- }
- break;
+ } else if (!$result && !is_null($default)) {
+ // If no match is found and a default value is specified, set it.
+ $value = $default;
}
- return FALSE;
+
+ // Return if a match was found or not.
+ return $result;
+}
+
+/**
+ * Get an immutable copy of a configuration variable if SquirrelMail
+ * is in "secured configuration" mode. This guarantees the caller
+ * gets a copy of the requested value as it is set in the main
+ * application configuration (including config_local overrides), and
+ * not what it might be after possibly having been modified by some
+ * other code (usually a plugin overriding configuration values for
+ * one reason or another).
+ *
+ * WARNING: Please use this function as little as possible, because
+ * every time it is called, it forcibly reloads the main configuration
+ * file(s).
+ *
+ * Caller beware that this function will do nothing if SquirrelMail
+ * is not in "secured configuration" mode per the $secured_config
+ * setting.
+ *
+ * @param string $var_name The name of the desired variable
+ *
+ * @return mixed The desired value
+ *
+ * @since 1.5.2
+ *
+ */
+function get_secured_config_value($var_name) {
+
+ static $return_values = array();
+
+ // if we can avoid it, return values that have
+ // already been retrieved (so we don't have to
+ // include the config file yet again)
+ //
+ if (isset($return_values[$var_name])) {
+ return $return_values[$var_name];
+ }
+
+
+ // load site configuration
+ //
+ require(SM_PATH . 'config/config.php');
+
+ // load local configuration overrides
+ //
+ if (file_exists(SM_PATH . 'config/config_local.php')) {
+ require(SM_PATH . 'config/config_local.php');
+ }
+
+ // if SM isn't in "secured configuration" mode,
+ // just return the desired value from the global scope
+ //
+ if (!$secured_config) {
+ global $$var_name;
+ $return_values[$var_name] = $$var_name;
+ return $$var_name;
+ }
+
+ // else we return what we got from the config file
+ //
+ $return_values[$var_name] = $$var_name;
+ return $$var_name;
+
}
/**
* Deletes an existing session, more advanced than the standard PHP
* session_destroy(), it explicitly deletes the cookies and global vars.
+ *
+ * WARNING: Older PHP versions have some issues with session management.
+ * See http://bugs.php.net/11643 (warning, spammed bug tracker) and
+ * http://bugs.php.net/13834. SID constant is not destroyed in PHP 4.1.2,
+ * 4.2.3 and maybe other versions. If you restart session after session
+ * is destroyed, affected PHP versions produce PHP notice. Bug should
+ * be fixed only in 4.3.0
*/
function sqsession_destroy() {
* merging of sessions.
*/
- global $base_uri;
+ global $base_uri, $_COOKIE, $_SESSION;
+
+ if (isset($_COOKIE[session_name()]) && session_name()) {
+ sqsetcookie(session_name(), $_COOKIE[session_name()], 1, $base_uri);
+
+ /*
+ * Make sure to kill /src and /src/ cookies, just in case there are
+ * some left-over or malicious ones set in user's browser.
+ * NB: Note that an attacker could try to plant a cookie for one
+ * of the /plugins/* directories. Such cookies can block
+ * access to certain plugin pages, but they do not influence
+ * or fixate the $base_uri cookie, so we don't worry about
+ * trying to delete all of them here.
+ */
+ sqsetcookie(session_name(), $_COOKIE[session_name()], 1, $base_uri . 'src');
+ sqsetcookie(session_name(), $_COOKIE[session_name()], 1, $base_uri . 'src/');
+ }
+
+ if (isset($_COOKIE['key']) && $_COOKIE['key']) sqsetcookie('key','SQMTRASH',1,$base_uri);
- if (isset($_COOKIE[session_name()])) setcookie(session_name(), '', time() - 5, $base_uri);
- if (isset($_COOKIE['username'])) setcookie('username','',time() - 5,$base_uri);
- if (isset($_COOKIE['key'])) setcookie('key','',time() - 5,$base_uri);
+ /* Make sure new session id is generated on subsequent session_start() */
+ unset($_COOKIE[session_name()]);
+ unset($_GET[session_name()]);
+ unset($_POST[session_name()]);
$sessid = session_id();
if (!empty( $sessid )) {
- if ( !check_php_version(4,1) ) {
- global $HTTP_SESSION_VARS;
- $HTTP_SESSION_VARS = array();
- } else {
- $_SESSION = array();
- }
+ $_SESSION = array();
@session_destroy();
}
-
}
/**
* 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, $_GET and such
+ * Update: (see #1685031) the session ID is left over after the
+ * session is closed in some PHP setups; this function just becomes
+ * a passthru to sqsession_start(), but leaving old code in for
+ * edification.
*/
-
function sqsession_is_active() {
+ //$sessid = session_id();
+ //if ( empty( $sessid ) ) {
+ sqsession_start();
+ //}
+}
- $sessid = session_id();
- if ( empty( $sessid ) ) {
- session_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)
+ * Note that as sqsession_is_active() no longer discriminates as to when
+ * it calls this function, session_start() has to have E_NOTICE suppression
+ * (thus the @ sign).
+ */
+function sqsession_start() {
+ global $base_uri;
+
+ sq_call_function_suppress_errors('session_start');
+ // was: @session_start();
+ $session_id = session_id();
+
+ // session_starts sets the sessionid cookie but without the httponly var
+ // setting the cookie again sets the httponly cookie attribute
+ //
+ // need to check if headers have been sent, since sqsession_is_active()
+ // has become just a passthru to this function, so the sqsetcookie()
+ // below is called every time, even after headers have already been sent
+ //
+ if (!headers_sent())
+ sqsetcookie(session_name(),$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)
+ * @param boolean $bReplace Replace previous cookies with same name?
+ *
+ * @return void
+ *
+ * @since 1.4.16 and 1.5.1
+ *
+ */
+function sqsetcookie($sName, $sValue='deleted', $iExpire=0, $sPath="", $sDomain="",
+ $bSecure=false, $bHttpOnly=true, $bReplace=false) {
+
+ // some environments can get overwhelmed by an excessive
+ // setting of the same cookie over and over (e.g., many
+ // calls to this function via sqsession_is_active() result
+ // in repeated setting of the session cookie when $bReplace
+ // is FALSE, but something odd happens (during login only)
+ // if we change that to default TRUE) ... so we keep our own
+ // naive per-request name/value cache and only set the cookie
+ // if its value is changing (or never seen before)
+ static $cookies = array();
+ if (isset($cookies[$sName]) && $cookies[$sName] === $sValue)
+ return;
+ else
+ $cookies[$sName] = $sValue;
+
+
+ // if we have a secure connection then limit the cookies to https only.
+ global $is_secure_connection;
+ if ($sName && $is_secure_connection)
+ $bSecure = true;
+
+ // admin config can override the restriction of secure-only cookies
+ global $only_secure_cookies;
+ if (!$only_secure_cookies)
+ $bSecure = false;
+
+ if (false && check_php_version(5,2)) {
+ // php 5 supports the httponly attribute in setcookie, but because setcookie seems a bit
+ // broken we use the header function for php 5.2 as well. We might change that later.
+ //setcookie($sName,$sValue,(int) $iExpire,$sPath,$sDomain,$bSecure,$bHttpOnly);
+ } else {
+ if (!empty($sDomain)) {
+ // Fix the domain to accept domains with and without 'www.'.
+ if (strtolower(substr($sDomain, 0, 4)) == 'www.') $sDomain = substr($sDomain, 4);
+ $sDomain = '.' . $sDomain;
+
+ // Remove port information.
+ $Port = strpos($sDomain, ':');
+ if ($Port !== false) $sDomain = substr($sDomain, 0, $Port);
+ }
+ if (!$sValue) $sValue = 'deleted';
+ header('Set-Cookie: ' . rawurlencode($sName) . '=' . rawurlencode($sValue)
+ . (empty($iExpire) ? '' : '; expires=' . gmdate('D, d-M-Y H:i:s', $iExpire) . ' GMT')
+ . (empty($sPath) ? '' : '; path=' . $sPath)
+ . (empty($sDomain) ? '' : '; domain=' . $sDomain)
+ . (!$bSecure ? '' : '; secure')
+ . (!$bHttpOnly ? '' : '; HttpOnly'), $bReplace);
+ }
+}
+
+
+/**
+ * session_regenerate_id replacement for PHP < 4.3.2
+ *
+ * This code is borrowed from Gallery, session.php version 1.53.2.1
+FIXME: I saw this code on php.net (in the manual); that's where it comes from originally, but I don't think we need it - it's just redundant to all the hard work we already did seeding the random number generator IMO. I think we can just call to GenerateRandomString() and dump the rest.
+ */
+if (!function_exists('session_regenerate_id')) {
+
+ function php_combined_lcg() {
+ $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')) {
+ sqsetcookie(session_name(), session_id(), 0, $base_uri);
+ }
+ return TRUE;
+ }
+}
+
+
+/**
+ * php_self
+ *
+ * Attempts to determine the path and filename and any arguments
+ * for the currently executing script. This is usually found in
+ * $_SERVER['REQUEST_URI'], but some environments may differ, so
+ * this function tries to standardize this value.
+ *
+ * Note that before SquirrelMail version 1.5.1, this function was
+ * stored in function/strings.php.
+ *
+ * @since 1.2.3
+ * @return string The path, filename and any arguments for the
+ * current script
+ */
+function php_self() {
+
+ $request_uri = '';
+
+ // first try $_SERVER['PHP_SELF'], which seems most reliable
+ // (albeit it usually won't include the query string)
+ //
+ $request_uri = '';
+ if (!sqgetGlobalVar('PHP_SELF', $request_uri, SQ_SERVER)
+ || empty($request_uri)) {
+
+ // well, then let's try $_SERVER['REQUEST_URI']
+ //
+ $request_uri = '';
+ if (!sqgetGlobalVar('REQUEST_URI', $request_uri, SQ_SERVER)
+ || empty($request_uri)) {
+
+ // TODO: anyone have any other ideas? maybe $_SERVER['SCRIPT_NAME']???
+ //
+ return '';
+ }
+
+ }
+
+ // we may or may not have any query arguments, depending on
+ // which environment variable was used above, and the PHP
+ // version, etc., so let's check for it now
+ //
+ $query_string = '';
+ if (strpos($request_uri, '?') === FALSE
+ && sqgetGlobalVar('QUERY_STRING', $query_string, SQ_SERVER)
+ && !empty($query_string)) {
+
+ $request_uri .= '?' . $query_string;
+ }
+
+ return $request_uri;
+
+}
+
+
+/**
+ * Print variable
+ *
+ * sm_print_r($some_variable, [$some_other_variable [, ...]]);
+ *
+ * Debugging function - does the same as print_r, but makes sure special
+ * characters are converted to htmlentities first. This will allow
+ * values like <some@email.address> to be displayed.
+ * The output is wrapped in <<pre>> and <</pre>> tags.
+ * Since 1.4.2 accepts unlimited number of arguments.
+ * @since 1.4.1
+ * @return void
+ */
+function sm_print_r() {
+ ob_start(); // Buffer output
+ foreach(func_get_args() as $var) {
+ print_r($var);
+ echo "\n";
+ // php has get_class_methods function that can print class methods
+ if (is_object($var)) {
+ // get class methods if $var is object
+ $aMethods=get_class_methods(get_class($var));
+ // make sure that $aMethods is array and array is not empty
+ if (is_array($aMethods) && $aMethods!=array()) {
+ echo "Object methods:\n";
+ foreach($aMethods as $method) {
+ echo '* ' . $method . "\n";
+ }
+ }
+ echo "\n";
+ }
+ }
+ $buffer = ob_get_contents(); // Grab the print_r output
+ ob_end_clean(); // Silently discard the output & stop buffering
+ print '<div align="left"><pre>';
+ print htmlentities($buffer);
+ print '</pre></div>';
+}
+
+
+/**
+ * Sanitize a value using sm_encode_html_special_chars() or similar, but also
+ * recursively run sm_encode_html_special_chars() (or similar) on array keys
+ * and values.
+ *
+ * If $value is not a string or an array with strings in it,
+ * the value is returned as is.
+ *
+ * @param mixed $value The value to be sanitized.
+ * @param mixed $quote_style Either boolean or an integer. If it
+ * is an integer, it must be the PHP
+ * constant indicating if/how to escape
+ * quotes: ENT_QUOTES, ENT_COMPAT, or
+ * ENT_NOQUOTES. If it is a boolean value,
+ * it must be TRUE and thus indicates
+ * that the only sanitizing to be done
+ * herein is to replace single and double
+ * quotes with ' and ", no other
+ * changes are made to $value. If it is
+ * boolean and FALSE, behavior reverts
+ * to same as if the value was ENT_QUOTES
+ * (OPTIONAL; default is ENT_QUOTES).
+ *
+ * @return mixed The sanitized value.
+ *
+ * @since 1.5.2
+ *
+ **/
+function sq_htmlspecialchars($value, $quote_style=ENT_QUOTES) {
+
+ if ($quote_style === FALSE) $quote_style = ENT_QUOTES;
+
+ // array? go recursive...
+ //
+ if (is_array($value)) {
+ $return_array = array();
+ foreach ($value as $key => $val) {
+ $return_array[sq_htmlspecialchars($key, $quote_style)]
+ = sq_htmlspecialchars($val, $quote_style);
+ }
+ return $return_array;
+
+ // sanitize strings only
+ //
+ } else if (is_string($value)) {
+ if ($quote_style === TRUE)
+ return str_replace(array('\'', '"'), array(''', '"'), $value);
+ else
+ return sm_encode_html_special_chars($value, $quote_style);
+ }
+
+ // anything else gets returned with no changes
+ //
+ return $value;
+
+}
+
+
+/**
+ * Detect whether or not we have a SSL secured (HTTPS) connection
+ * connection to the browser
+ *
+ * It is thought to be so if you have 'SSLOptions +StdEnvVars'
+ * in your Apache configuration,
+ * OR if you have HTTPS set to a non-empty value (except "off")
+ * in your HTTP_SERVER_VARS,
+ * OR if you have HTTP_X_FORWARDED_PROTO=https in your HTTP_SERVER_VARS,
+ * OR if you are on port 443.
+ *
+ * Note: HTTP_X_FORWARDED_PROTO could be sent from the client and
+ * therefore possibly spoofed/hackable. Thus, SquirrelMail
+ * ignores such headers by default. The administrator
+ * can tell SM to use such header values by setting
+ * $sq_ignore_http_x_forwarded_headers to boolean FALSE
+ * in config/config.php or by using config/conf.pl.
+ *
+ * Note: It is possible to run SSL on a port other than 443, and
+ * if that is the case, the administrator should set
+ * $sq_https_port in config/config.php or by using config/conf.pl.
+ *
+ * @return boolean TRUE if the current connection is SSL-encrypted;
+ * FALSE otherwise.
+ *
+ * @since 1.4.17 and 1.5.2
+ *
+ */
+function is_ssl_secured_connection()
+{
+ global $sq_ignore_http_x_forwarded_headers, $sq_https_port;
+ $https_env_var = getenv('HTTPS');
+ if ($sq_ignore_http_x_forwarded_headers
+ || !sqgetGlobalVar('HTTP_X_FORWARDED_PROTO', $forwarded_proto, SQ_SERVER))
+ $forwarded_proto = '';
+ if (empty($sq_https_port)) // won't work with port 0 (zero)
+ $sq_https_port = 443;
+ if ((isset($https_env_var) && strcasecmp($https_env_var, 'on') === 0)
+ || (sqgetGlobalVar('HTTPS', $https, SQ_SERVER) && !empty($https)
+ && strcasecmp($https, 'off') !== 0)
+ || (strcasecmp($forwarded_proto, 'https') === 0)
+ || (sqgetGlobalVar('SERVER_PORT', $server_port, SQ_SERVER)
+ && $server_port == $sq_https_port))
+ return TRUE;
+ return FALSE;
+}
+
+
+/**
+ * Endeavor to detect what user and group PHP is currently
+ * running as. Probably only works in non-Windows environments.
+ *
+ * @return mixed Boolean FALSE is returned if something went wrong,
+ * otherwise an array is returned with the following
+ * elements:
+ * uid The current process' UID (integer)
+ * euid The current process' effective UID (integer)
+ * gid The current process' GID (integer)
+ * egid The current process' effective GID (integer)
+ * name The current process' name/handle (string)
+ * ename The current process' effective name/handle (string)
+ * group The current process' group name (string)
+ * egroup The current process' effective group name (string)
+ * Note that some of these elements may have empty
+ * values, especially if they could not be determined.
+ *
+ * @since 1.5.2
+ *
+ */
+function get_process_owner_info()
+{
+ if (!function_exists('posix_getuid'))
+ return FALSE;
+
+ $process_info['uid'] = posix_getuid();
+ $process_info['euid'] = posix_geteuid();
+ $process_info['gid'] = posix_getgid();
+ $process_info['egid'] = posix_getegid();
+
+ $user_info = posix_getpwuid($process_info['uid']);
+ $euser_info = posix_getpwuid($process_info['euid']);
+ $group_info = posix_getgrgid($process_info['gid']);
+ $egroup_info = posix_getgrgid($process_info['egid']);
+
+ $process_info['name'] = $user_info['name'];
+ $process_info['ename'] = $euser_info['name'];
+ $process_info['group'] = $user_info['name'];
+ $process_info['egroup'] = $euser_info['name'];
+
+ return $process_info;
}
-?>
projects / squirrelmail.git / blobdiff