X-Git-Url: http://p2p-next.cs.pub.ro/gitweb/?a=blobdiff_plain;f=application%2Fmodels%2Fusers_model.php;h=252a5dba0ae3090fa146176d118a74ca9abd40c9;hb=2881d1393f363efd3c5f0e9b58706e6e35e85717;hp=ad4caf055e26c494555c00d74805eb729476ee39;hpb=adc2c33c37c781444c4234c6fed38e95d084ed8d;p=living-lab-site.git diff --git a/application/models/users_model.php b/application/models/users_model.php index ad4caf0..252a5db 100644 --- a/application/models/users_model.php +++ b/application/models/users_model.php @@ -26,6 +26,8 @@ class Users_model extends CI_Model { * * @param string $username * @param string $password + * @return mixed can return FALSE if authentication failed, a `users`DB row + * as an associative array if authentication was successful */ public function login($username, $password) { @@ -39,14 +41,703 @@ class Users_model extends CI_Model { $enc_password = sha1($password); - // TODO select only required fields. - $query = $this->db->query("SELECT * FROM `users` - WHERE $cond_user AND password = '$enc_password'"); + $query = $this->db->query("SELECT u.*, a.activation_code + FROM `users` u LEFT JOIN `users_unactivated` a ON (u.id = a.user_id) + WHERE $cond_user + AND (auth_src = 'ldap' OR password = '$enc_password')"); - if ($query->num_rows() !== 1) - return FALSE; + // It is possible that the user has a LDAP account but he's + // authenticating here for the first time so it does not have an entry + // in `users` table. + if ($query->num_rows() === 0) + { + $ldap_userdata = $this->ldap_login($username, $password); + if ($ldap_userdata === FALSE) + return FALSE; + $userdata = $this->convert_ldap_userdata($ldap_userdata); + $this->register($userdata); + + $user = $this->login($username, $password); + $user['import'] = TRUE; + return $user; + } + + $user = $query->row_array(); + + // Authenticate with LDAP. + if ($user['auth_src'] == 'ldap' + && ! $this->ldap_login($username, $password)) + return FALSE; + + if (empty($user['username']) || empty($user['email']) + || empty($user['first_name']) || empty($user['last_name']) + || empty($user['country'])) + $user['import'] = TRUE; + + // Update last login time. + $this->db->query("UPDATE `users` + SET last_login = UTC_TIMESTAMP() + WHERE username = '$username'"); + + // If we are here internal authentication has successful. + return $user; + } + + /** + * Begin the OpenID login by redirecting user to the OP to authenticate. + * + * @param string $openid + */ + public function openid_begin_login($openid) + { + $this->lang->load('openid'); + $this->load->library('openid'); + + $request_to = site_url('user/check_openid_login'); + + $req = array('nickname'); + $opt = array('fullname', 'email', 'dob', 'country'); + $policy = site_url('user/openid_policy'); + + $ax_attributes[] = Auth_OpenID_AX_AttrInfo::make( + 'http://axschema.org/contact/email', 1, TRUE); + $ax_attributes[] = Auth_OpenID_AX_AttrInfo::make( + 'http://axschema.org/namePerson/first', 1, TRUE); + $ax_attributes[] = Auth_OpenID_AX_AttrInfo::make( + 'http://axschema.org/namePerson/last', 1, TRUE); + $ax_attributes[] = Auth_OpenID_AX_AttrInfo::make( + 'http://axschema.org/contact/country', 1, TRUE); + + $this->openid->set_request_to($request_to); + $this->openid->set_trust_root(base_url()); + $this->openid->set_sreg(TRUE, $req, $opt, $policy); + $this->openid->set_ax(TRUE, $ax_attributes); + + // Redirection to OP site will follow. + $this->openid->authenticate($openid); + } + + /** + * Finalize the OpenID login. Register user if is here for the first time. + * + * @return mixed returns a `users` DB row as an associative array if + * authentication was successful or Auth_OpenID_CANCEL/_FAILURE if it was + * unsuccessful. + */ + public function openid_complete_login() + { + $this->lang->load('openid'); + $this->load->library('openid'); + + $request_to = site_url('user/check_openid_login'); + $this->openid->set_request_to($request_to); + + $response = $this->openid->get_response(); + + if ($response->status === Auth_OpenID_CANCEL + || $response->status === Auth_OpenID_FAILURE) + return $response->status; - return $query->row_array(); + // Auth_OpenID_SUCCESS + $openid = $response->getDisplayIdentifier(); + //$esc_openid = htmlspecialchars($openid, ENT_QUOTES); + + // Get user_id to see if it's the first time the user logs in with + // OpenID. + $query = $this->db->query("SELECT * from `users_openid` + WHERE openid_url = '$openid'"); + $import = FALSE; + + // First time with OpenID => register user + if ($query->num_rows() === 0) + { + $user_id = $this->openid_register($response); + $import = TRUE; + } + // Not first time with OpenID. + else + $user_id = $query->row()->user_id; + + // Login + $query = $this->db->query("SELECT * FROM `users` + WHERE id = $user_id"); + $userdata = $query->row_array(); + $userdata['import'] = $import; + + if (empty($userdata['username']) || empty($userdata['email']) + || empty($userdata['first_name']) + || empty($userdata['last_name']) + || empty($userdata['country'])) + $userdata['import'] = TRUE; + + // Update last login time. + $this->db->query("UPDATE `users` + SET last_login = UTC_TIMESTAMP() + WHERE id = $user_id"); + + return $userdata; + } + + /** + * Register an user that logged in with OpenID for the first time. + * + * @param object $op_response object returned by Janrain + * Consumer::complete method. + * @return mixed the user_id inserted or FALSE on error + */ + public function openid_register($op_response) + { + $sreg_resp = Auth_OpenID_SRegResponse::fromSuccessResponse($op_response); + $ax_resp = Auth_OpenID_AX_FetchResponse::fromSuccessResponse($op_response); + + if ($ax_resp) + { + $ax_email = $ax_resp->get('http://axschema.org/contact/email'); + $ax_first_name = $ax_resp->get( + 'http://axschema.org/namePerson/first'); + $ax_last_name = $ax_resp->get('http://axschema.org/namePerson/last'); + $ax_country = $ax_resp->get('http://axschema.org/contact/country'); + } + else + { + $ax_email = ''; + $ax_first_name = ''; + $ax_last_name = ''; + $ax_country = ''; + } + + if ($sreg_resp) + { + $sreg_email = $sreg_resp->get('email', ''); + $sreg_fullname = $sreg_resp->get('fullname', ''); + $sreg_nickname = $sreg_resp->get('nickname', ''); + $sreg_country = $sreg_resp->get('country', ''); + $sreg_dob = $sreg_resp->get('dob', NULL); + } + else + { + $sreg_email = $sreg_fullname = $sreg_nickname = $sreg_country = ''; + $sreg_dob = NULL; + } + + // E-mail + if (empty($ax_email) || is_a($ax_email, 'Auth_OpenID_AX_Error')) + $data['email'] = $sreg_email; + else + $data['email'] = $ax_email[0]; + $data['email'] = strtolower($data['email']); + + // First Name + if (empty($ax_first_name) + || is_a($ax_first_name, 'Auth_OpenID_AX_Error')) + $data['first_name'] = ''; + else + $data['first_name'] = $ax_first_name[0]; + + // Sur Name + if (empty($ax_last_name) || is_a($ax_last_name, 'Auth_OpenID_AX_Error')) + $data['last_name'] = ''; + else + $data['last_name'] = $ax_last_name[0]; + + // First Name and Last Name + if (empty($data['first_name']) || empty($data['last_name'])) + { + if ($sreg_fullname) + { + if (empty($data['first_name'])) + $data['first_name'] = substr( + $sreg_fullname, 0, strrpos($sreg_fullname, ' ')); + if (empty($data['last_name'])) + $data['last_name'] = substr( + $sreg_fullname, strrpos($sreg_fullname, ' ') + 1); + } + } + + // Username + $data['username'] = $sreg_nickname; + if (!$data['username']) + { + // Generate username from email + if (!empty($data['email'])) + { + $data['username'] = substr($data['email'], + 0, strpos($data['email'], '@')); + $data['username'] = preg_replace(array('/[^a-z0-9\._]*/'), + array(''), $data['username']); + } + // Generate username from first name and sur name + else if(!empty($data['first_name']) || !empty($data['last_name'])) + { + $data['username'] = $data['first_name'] . '_' + . $data['last_name']; + } + // Generate a random username + else + $data['username'] = $this->gen_username(); + } + // Limit username to 24 characters because a prefix of 8 characters + // will be added: 'autogen_'. + $data['username'] = substr($data['username'], 0, 24); + // Append a random character to the username each time it still exists. + if ($this->get_userdata($data['username'])) + { + $chars = 'abcdefghijklmnopqrstuvwxyz0123456789'; + $len_chars = strlen($chars); + $data['username'] .= '_'; + do + { + $data['username'] .= $chars[ mt_rand(0, $len_chars - 1) ]; + } while($this->get_userdata($data['username'])); + } + // Usernames autogenerated have 'autogen_' prefix and can be changed + // by the user from the account section. After this process it cannot + // be changed anymore. + $data['username'] = 'autogen_' . $data['username']; + + // Country + if (empty($ax_country) || is_a($ax_country, 'Auth_OpenID_AX_Error')) + $data['country'] = $sreg_country; + else + $data['country'] = $ax_country[0]; + + // Birth Date + $data['birth_date'] = $sreg_dob; + + // OpenID + $data['auth_src'] = 'openid'; + + if (!$this->register($data, $op_response->getDisplayIdentifier())) + return FALSE; + + $query = $this->db->query("SELECT id from `users` + WHERE username = '{$data['username']}'"); + return $query->row()->id; + } + + /** + * Converts an array returned by LDAP login to an array which contains + * user data ready to be used in `users` DB. + * + * @param array $ldap_userdata + * @return array + */ + public function convert_ldap_userdata($ldap_userdata) + { + $userdata['username'] = $ldap_userdata['uid'][0]; + $userdata['email'] = $ldap_userdata['mail'][0]; + $userdata['first_name'] = $ldap_userdata['givenname'][0]; + $userdata['last_name'] = $ldap_userdata['sn'][0]; + + $userdata['auth_src'] = 'ldap'; + + return $userdata; + } + + /** + * Login with LDAP. + * + * @param string $username + * @param string $password + * @return boolean + * @author Alex Herișanu, Răzvan Deaconescu, Călin-Andrei Burloiu + */ + public function ldap_login($username, $password) + { + $this->config->load('ldap'); + + // First connection: binding. + // TODO exception + $ds = ldap_connect($this->config->item('ldap_server')) or die("Can't connect to ldap server.\n"); + if (!@ldap_bind($ds, $this->config->item('ldap_bind_user'), + $this->config->item('ldap_bind_password'))) + { + ldap_close($ds); + die("Can't connect to ".$this->config->item('ldap_server')."\n"); + return FALSE; + } + $sr = ldap_search($ds, "dc=cs,dc=curs,dc=pub,dc=ro", "(uid=" . $username . ")"); + if (ldap_count_entries($ds, $sr) > 1) + die("Multiple entries with the same uid in LDAP database??"); + if (ldap_count_entries($ds, $sr) < 1) { + ldap_close($ds); + return FALSE; + } + + $info = ldap_get_entries($ds, $sr); + $dn = $info[0]["dn"]; + ldap_close($ds); + + // Second connection: connect with user's credentials. + $ds = ldap_connect($this->config->item('ldap_server')) or die("Can't connect to ldap server\n"); + if (!@ldap_bind($ds, $dn, $password) or $password == '') { + ldap_close($ds); + return FALSE; + } + + // Verifify if DN belongs to the requested OU. + $info[0]['ou_ok'] = $this->ldap_dn_belongs_ou( $dn, $this->config->item('ldap_req_ou') ); + + // Set authentication source. + $info[0]['auth_src'] = 'ldap_first_time'; + + return $info[0]; + } + + /** + * Verify if a user belongs to a group. + * + * @param string $dn = "ou=Student,ou=People..." + * @param array $ou = array ("Student", etc + * @return TRUE or FALSE + * @author Răzvan Herișanu, Răzvan Deaconescu, Călin-Andrei Burloiu + */ + public function ldap_dn_belongs_ou($dn, $ou) + { + if (!is_array($ou)) + $ou = array ($ou); + + $founded = FALSE; + $words = explode(',', $dn); + foreach ($words as $c) { + $parts = explode("=", $c); + $key = $parts[0]; + $value = $parts[1]; + + if (strtolower($key) == "ou" && in_array($value, $ou) ) + $founded = TRUE; + } + + return $founded; + } + + /** + * Adds a new user to DB. + * Do not add join_date and last_login column, they will be automatically + * added. + * Provide an 'openid' with the OpenID as value in order to register users + * logging in this way. + * + * @param array $data corresponds to DB columns + */ + public function register($data, $openid = NULL) + { + $this->load->helper('array'); + + // TODO verify mandatory data existance + + // Process data. + if (isset($data['password'])) + $data['password'] = sha1($data['password']); + + if (empty($data['birth_date'])) + $data['birth_date'] = NULL; + + $cols = ''; + $vals = ''; + foreach ($data as $col=> $val) + { + if ($val === NULL) + { + $cols .= "$col, "; + $vals .= "NULL, "; + continue; + } + + $cols .= "$col, "; + if (is_int($val)) + $vals .= "$val, "; + else if (is_string($val)) + $vals .= "'$val', "; + } + $cols = substr($cols, 0, -2); + $vals = substr($vals, 0, -2); + + $query = $this->db->query("INSERT INTO `users` + ($cols, registration_date, last_login) + VALUES ($vals, utc_timestamp(), utc_timestamp())"); + if ($query === FALSE) + return FALSE; + + // If registered with OpenID insert a row in `users_openid`. + if ($openid) + { + // Find user_id. + $query = $this->db->query("SELECT id from `users` + WHERE username = '{$data['username']}'"); + if ($query->num_rows() === 0) + return FALSE; + $user_id = $query->row()->id; + + // Insert row in `users_openid`. + $query = $this->db->query("INSERT INTO `users_openid` + (openid_url, user_id) + VALUES ('$openid', $user_id)"); + if (!$query) + return FALSE; + } + + // If registered with internal authentication it needs to activate + // the account. + if ($data['auth_src'] == 'internal') + { + $activation_code = Users_model::gen_activation_code($data['username']); + $user_id = $this->get_user_id($data['username']); + $query = $this->db->query("INSERT INTO `users_unactivated` + (user_id, activation_code) + VALUES ($user_id, '$activation_code')"); + $this->send_activation_email($user_id, $data['email'], + $activation_code, $data['username']); + } + + // TODO exception on failure + return $query; + } + + public function get_user_id($username) + { + $query = $this->db->query("SELECT id FROM `users` + WHERE username = '$username'"); + + if ($query->num_rows() === 0) + return FALSE; + + return $query->row()->id; + } + + // TODO cleanup account activation + public function cleanup_account_activation() + { + + } + + /** + * Activated an account for an user having $user_id with $activation_code. + * + * @param int $user_id + * @param string $activation_code hexa 16 characters string + * @return returns TRUE if activation was successful and FALSE otherwise + */ + public function activate_account($user_id, $activation_code) + { + $query = $this->db->query("SELECT * FROM `users_unactivated` + WHERE user_id = $user_id + AND activation_code = '$activation_code'"); + + if ($query->num_rows() === 0) + return FALSE; + + $this->db->query("DELETE FROM `users_unactivated` + WHERE user_id = $user_id"); + + return TRUE; + } + + public function send_activation_email($user_id, $email = NULL, + $activation_code = NULL, $username = NULL) + { + if (!$activation_code || !$email || !$username) + { + if (!$email) + $cols = 'email, '; + else + $cols = ''; + + $userdata = $this->get_userdata($user_id, + $cols. "a.activation_code, username"); + $activation_code =& $userdata['activation_code']; + + if (!$email) + $email =& $userdata['email']; + $username =& $userdata['username']; + } + + if ($activation_code === NULL) + return TRUE; + + $subject = '['. $this->config->item('site_name') + . '] Account Activation'; + $activation_url = + site_url("user/activate/$user_id/code/$activation_code"); + $msg = sprintf($this->lang->line('user_activation_email_content'), + $username, $this->config->item('site_name'), site_url(), + $activation_url, $activation_code); + $headers = "From: ". $this->config->item('noreply_email'); + + return mail($email, $subject, $msg, $headers); + } + + public function recover_password($username, $email) + { + $userdata = $this->get_userdata($username, 'email, username, id'); + + if (strcmp($userdata['email'], $email) !== 0) + return FALSE; + + $recovered_password = Users_model::gen_password(); + + $this->set_userdata(intval($userdata['id']), array('password'=> + $recovered_password)); + + $subject = '['. $this->config->item('site_name') + . '] Password Recovery'; + $msg = sprintf($this->lang->line('user_password_recovery_email_content'), + $username, $this->config->item('site_name'), site_url(), + $recovered_password); + $headers = "From: ". $this->config->item('noreply_email'); + + mail($email, $subject, $msg, $headers); + + return TRUE; + } + + /** + * Returns data from `users` table. If $user is int it is used as an + * id, if it is string it is used as an username. + * + * @param mixed $user + * @param string $table_cols (optional) string with comma separated + * `users` table column names. Use a.activation_code to check user's + * account activation_code. If this value is NULL than the account is + * active. + * @return array associative array with userdata from DB + */ + public function get_userdata($user, $table_cols = '*') + { + if (is_int($user)) + $cond = "id = $user"; + else + $cond = "username = '$user'"; + + $query = $this->db->query("SELECT $table_cols + FROM `users` u LEFT JOIN `users_unactivated` a + ON (u.id = a.user_id) + WHERE $cond"); + + if ($query->num_rows() === 0) + return FALSE; + + $userdata = $query->row_array(); + + // Post process userdata. + if (isset($userdata['picture'])) + { + $userdata['picture_thumb'] = site_url( + "data/user_pictures/{$userdata['picture']}-thumb.jpg"); + $userdata['picture'] = site_url( + "data/user_pictures/{$userdata['picture']}"); + } + + return $userdata; + } + + /** + * Modifies data from `users` table for user with $user_id. + * + * @param int $user_id + * @param array $data key-value pairs with columns and new values to be + * modified + * @return boolean returns TRUE on success and FALSE otherwise + */ + public function set_userdata($user_id, $data) + { + // TODO verify mandatory data existance + + // Process data. + if (isset($data['password'])) + $data['password'] = sha1($data['password']); + // TODO picture data: save, convert, make it thumbnail + + if (empty($data['birth_date'])) + $data['birth_date'] = NULL; + + $set = ''; + foreach ($data as $col => $val) + { + if ($val === NULL) + { + $set .= "$col = NULL, "; + continue; + } + + if (is_int($val)) + $set .= "$col = $val, "; + else if (is_string($val)) + $set .= "$col = '$val', "; + } + $set = substr($set, 0, -2); + + $query_str = "UPDATE `users` + SET $set WHERE id = $user_id"; + //echo "

$query_str

"; + $query = $this->db->query($query_str); + + // TODO exception + return $query; + } + + public static function gen_activation_code($str = '') + { + $ci =& get_instance(); + + $activation_code = substr( + sha1(''. $str. $ci->config->item('encryption_key') + . mt_rand()), + 0, + 16); + + return $activation_code; + } + + public static function gen_password() + { + $ci =& get_instance(); + $length = 16; + $chars = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ,.?!_-'; + $len_chars = strlen($chars); + $enc_key = $ci->config->item('encryption_key'); + $len_enc_key = strlen($enc_key); + $password = ''; + + for ($p = 0; $p < $length; $p++) + { + $i = (mt_rand(1, 100) * ord($enc_key[ mt_rand(0, $len_enc_key-1) ])) + % $len_chars; + $password .= $chars[$i]; + } + + return $password; + } + + public static function gen_username() + { + $chars = 'abcdefghijklmnopqrstuvwxyz0123456789._'; + $len_chars = strlen($chars); + $len = 8; + $username = ''; + + for ($i = 0; $i < $len; $i++) + $username .= $chars[ mt_rand(0, $len_chars - 1) ]; + + return $username; + } + + public static function roles_to_string($roles) + { + $ci =& get_instance(); + $ci->lang->load('user'); + + if ($roles == USER_ROLE_STANDARD) + return $ci->lang->line('user_role_standard'); + else + { + $str_roles = ''; + + if ($roles & USER_ROLE_ADMIN) + $str_roles .= $ci->lang->line('user_role_admin') . '; '; + } + + return $str_roles; } }