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Some documentation of include/auth.php.

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This commit is contained in:
Klaus Weidenbach 2014-10-05 14:51:58 +02:00
parent 82ba42586c
commit 0875448ab9
1 changed files with 74 additions and 53 deletions
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65
include/auth.php
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@ -1,11 +1,23 @@
<?php /** @file */
<?php
/**
* @file include/auth.php
* @brief Functions and inline functionality for authentication.
*
* This file provides some functions for authentication handling and inline
* functionality. Look for auth parameters or re-validate an existing session
* also handles logout.
* Also provides a function for OpenID identiy matching.
*/
require_once('include/security.php');
/**
* @brief Resets the current session.
*
* @return void
*/
function nuke_session() {
new_cookie(0);
new_cookie(0); // 0 means delete on browser exit
unset($_SESSION['authenticated']);
unset($_SESSION['account_id']);
@ -27,12 +39,15 @@ function nuke_session() {
}
/**
* Verify login credentials
*
* Returns account record on success, null on failure
* @brief Verify login credentials.
*
* @param string $email
* The email address to verify.
* @param string $pass
* The provided password to verify.
* @return array|null
* Returns account record on success, null on failure.
*/
function account_verify_password($email, $pass) {
$email_verify = get_config('system', 'verify_email');
@ -51,6 +66,7 @@ function account_verify_password($email,$pass) {
);
if(! ($r && count($r)))
return null;
foreach($r as $record) {
if(($record['account_flags'] == ACCOUNT_OK)
&& (hash('whirlpool', $record['account_salt'] . $pass) === $record['account_password'])) {
@ -61,7 +77,6 @@ function account_verify_password($email,$pass) {
$error = 'password failed for ' . $email;
logger($error);
if($record['account_flags'] & ACCOUNT_UNVERIFIED)
logger('Account is unverified. account_flags = ' . $record['account_flags']);
if($record['account_flags'] & ACCOUNT_BLOCKED)
@ -88,14 +103,12 @@ function account_verify_password($email,$pass) {
* also handles logout
*/
if((isset($_SESSION)) && (x($_SESSION,'authenticated')) && ((! (x($_POST,'auth-params'))) || ($_POST['auth-params'] !== 'login'))) {
if((isset($_SESSION)) && (x($_SESSION, 'authenticated')) &&
((! (x($_POST, 'auth-params'))) || ($_POST['auth-params'] !== 'login'))) {
// process a logout request
if(((x($_POST, 'auth-params')) && ($_POST['auth-params'] === 'logout')) || ($a->module === 'logout')) {
// process logout request
$args = array('channel_id' => local_user());
call_hooks('logging_out', $args);
@ -140,14 +153,13 @@ if((isset($_SESSION)) && (x($_SESSION,'authenticated')) && ((! (x($_POST,'auth-p
if(x($_SESSION, 'uid') || x($_SESSION, 'account_id')) {
// first check if we're enforcing that sessions can't change IP address
// @todo what to do with IPv6 addresses
if($_SESSION['addr'] && $_SESSION['addr'] != $_SERVER['REMOTE_ADDR']) {
logger('SECURITY: Session IP address changed: ' . $_SESSION['addr'] . ' != ' . $_SERVER['REMOTE_ADDR']);
$partial1 = substr($_SESSION['addr'], 0, strrpos($_SESSION['addr'], '.'));
$partial2 = substr($_SERVER['REMOTE_ADDR'], 0, strrpos($_SERVER['REMOTE_ADDR'], '.'));
$paranoia = intval(get_pconfig($_SESSION['uid'], 'system', 'paranoia'));
if(! $paranoia)
$paranoia = intval(get_config('system', 'paranoia'));
@ -174,7 +186,6 @@ if((isset($_SESSION)) && (x($_SESSION,'authenticated')) && ((! (x($_POST,'auth-p
nuke_session();
goaway(z_root());
break;
}
}
@ -199,9 +210,7 @@ if((isset($_SESSION)) && (x($_SESSION,'authenticated')) && ((! (x($_POST,'auth-p
nuke_session();
goaway(z_root());
}
}
} // end logged in user returning
}
else {
@ -239,7 +248,6 @@ else {
$record = $addon_auth['user_record'];
}
else {
$record = get_app()->account = account_verify_password($_POST['username'], $_POST['password']);
if(get_app()->account) {
@ -250,7 +258,6 @@ else {
}
logger('authenticate: ' . print_r(get_app()->account, true), LOGGER_DEBUG);
}
if((! $record) || (! count($record))) {
@ -293,8 +300,22 @@ else {
}
/**
* @brief Returns the channel_id for a given openid_identity.
*
* Queries the values from pconfig configuration for the given openid_identity
* and returns the corresponding channel_id.
*
* @fixme How do we prevent that an OpenID identity is used more than once?
*
* @param string $authid
* The given openid_identity
* @return int|bool
* Return channel_id from pconfig or false.
*/
function match_openid($authid) {
$r = q("select * from pconfig where cat = 'system' and k = 'openid' and v = '%s' limit 1",
// Query the uid/channel_id from pconfig for a given value.
$r = q("SELECT uid FROM pconfig WHERE cat = 'system' AND k = 'openid' AND v = '%s' LIMIT 1",
dbesc($authid)
);
if($r)