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authorFlorian Pritz <bluewind@xinu.at>2013-01-30 22:31:11 +0100
committerFlorian Pritz <bluewind@xinu.at>2013-01-30 22:31:11 +0100
commitf8ac2f6582001bfa3b42ac4fbdc77ff97137a8f8 (patch)
treecc6979a56bd458546582b7da3c69bf0ec5f8af82 /application/libraries
parente8d30fa25470f3912c0d4e8629fc7b764aae1c72 (diff)
Modularize authentication system
This allows to easily add LDAP and other support. Signed-off-by: Florian Pritz <bluewind@xinu.at>
Diffstat (limited to 'application/libraries')
-rw-r--r--application/libraries/Duser/Duser.php94
-rw-r--r--application/libraries/Duser/drivers/Duser_db.php63
2 files changed, 157 insertions, 0 deletions
diff --git a/application/libraries/Duser/Duser.php b/application/libraries/Duser/Duser.php
new file mode 100644
index 000000000..c06f4f723
--- /dev/null
+++ b/application/libraries/Duser/Duser.php
@@ -0,0 +1,94 @@
+<?php
+/*
+ * Copyright 2013 Florian "Bluewind" Pritz <bluewind@server-speed.net>
+ *
+ * Licensed under GPLv3
+ * (see COPYING for full license text)
+ *
+ */
+
+abstract class Duser_Driver extends CI_Driver {
+
+ // List of optional functions or function group that are implemented
+ //
+ // Possible values are names of functions already implemented in this
+ // abstract class or the function groups listed below.
+ //
+ // Possible function groups are:
+ // - can_register_new_users
+ // - can_reset_password
+ public $optional_functions = array();
+
+ /*
+ * The array should contain the following keys:
+ * - username VARCHAR
+ * - userid INT > 0
+ *
+ * @return mixed array on success, false on failure
+ */
+ abstract public function login($username, $password);
+
+ public function username_exists($username) {
+ return false;
+ }
+}
+
+class Duser extends CI_Driver_Library {
+
+ protected $_adapter = null;
+
+ protected $valid_drivers = array(
+ 'duser_db'
+ );
+
+ function __construct()
+ {
+ // TODO: read config
+ $this->_adapter = 'db';
+ }
+
+ // require an optional function to be implemented
+ public function require_implemented($function) {
+ if (!$this->is_implemented($function)) {
+ show_error(""
+ ."Optional function '".$function."' not implemented in user adapter '".$this->_adapter."'. "
+ ."Requested functionally unavailable.");
+ }
+ }
+
+ // check if an optional function is implemented
+ public function is_implemented($function) {
+ if (in_array($function, $this->{$this->_adapter}->optional_functions)) {
+ return true;
+ }
+
+ return false;
+ }
+
+ public function login($username, $password)
+ {
+ $login_info = $this->{$this->_adapter}->login($username, $password);
+ if ($login_info === false) {
+ return false;
+ }
+
+ $CI =& get_instance();
+
+ $CI->session->set_userdata('logged_in', true);
+ $CI->session->set_userdata('username', $login_info["username"]);
+ $CI->session->set_userdata('userid', $login_info["userid"]);
+
+ return true;
+ }
+
+ public function username_exists($username)
+ {
+ $this->require_implemented(__FUNCTION__);
+
+ if ($username === false) {
+ return false;
+ }
+
+ return $this->{$this->_adapter}->username_exists($username);
+ }
+}
diff --git a/application/libraries/Duser/drivers/Duser_db.php b/application/libraries/Duser/drivers/Duser_db.php
new file mode 100644
index 000000000..806b0d150
--- /dev/null
+++ b/application/libraries/Duser/drivers/Duser_db.php
@@ -0,0 +1,63 @@
+<?php
+/*
+ * Copyright 2013 Florian "Bluewind" Pritz <bluewind@server-speed.net>
+ *
+ * Licensed under GPLv3
+ * (see COPYING for full license text)
+ *
+ */
+
+class Duser_db extends Duser_Driver {
+
+ public $optional_functions = array(
+ 'username_exists',
+ 'can_reset_password',
+ 'can_register_new_users'
+ );
+
+ public function login($username, $password)
+ {
+ $CI =& get_instance();
+
+ $query = $CI->db->query('
+ SELECT username, id, password
+ FROM `users`
+ WHERE `username` = ?
+ ', array($username))->row_array();
+
+ if (!isset($query["username"]) || $query["username"] !== $username) {
+ return false;
+ }
+
+ if (!isset($query["password"])) {
+ return false;
+ }
+
+ if (crypt($password, $query["password"]) === $query["password"]) {
+ return array(
+ "username" => $username,
+ "userid" => $query["id"]
+ );
+ } else {
+ return false;
+ }
+ }
+
+ public function username_exists($username)
+ {
+ $CI =& get_instance();
+
+ $query = $CI->db->query("
+ SELECT id
+ FROM users
+ WHERE username = ?
+ ", array($username));
+
+ if ($query->num_rows() > 0) {
+ return true;
+ } else {
+ return false;
+ }
+ }
+
+}