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| -rw-r--r-- | mod/id.php | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/mod/id.php b/mod/id.php new file mode 100644 index 000000000..852c73163 --- /dev/null +++ b/mod/id.php @@ -0,0 +1,237 @@ +<?php + +function id_init(&$a) { + +logger('id: ' . print_r($_REQUEST,true)); + +/** + * This example shows several things: + * - How a setup interface should look like. + * - How to use a mysql table for authentication + * - How to store associations in mysql table, instead of php sessions. + * - How to store realm authorizations. + * - How to send AX/SREG parameters. + * For the example to work, you need to create the necessary tables: +CREATE TABLE Users ( + id INT NOT NULL auto_increment PRIMARY KEY, + login VARCHAR(32) NOT NULL, + password CHAR(40) NOT NULL, + firstName VARCHAR(32) NOT NULL, + lastName VARCHAR(32) NOT NULL +); + +CREATE TABLE AllowedSites ( + user INT NOT NULL, + realm TEXT NOT NULL, + attributes TEXT NOT NULL, + INDEX(user) +); + +CREATE TABLE Associations ( + id INT NOT NULL PRIMARY KEY, + data TEXT NOT NULL +); + * + * This is only an example. Don't use it in your code as-is. + * It has several security flaws, which you shouldn't copy (like storing plaintext login and password in forms). + * + * This setup could be very easily flooded with many associations, + * since non-private ones aren't automatically deleted. + * You could prevent this by storing a date of association and removing old ones, + * or by setting $this->dh = false; + * However, the latter one would disable stateful mode, unless connecting via HTTPS. + */ +require 'library/openid/provider/provider.php'; + + +function getUserData($handle=null) +{ + if(! local_channel()) { + notice( t('Permission denied.') . EOL); + get_app()->page['content'] = login(); + } + + + if($handle) { + $r = q("select * from channel left join xchan on channel_hash = xchan_hash where channel_hash = '%s' limit 1", + dbesc($handle) + ); + } + else { + $r = q("select * from channel left join xchan on channel_hash = xchan_hash where channel_id = %d", + intval(local_channel()) + ); + } + + return $r; + +/* + if(isset($_POST['login'],$_POST['password'])) { + $login = mysql_real_escape_string($_POST['login']); + $password = sha1($_POST['password']); + $q = mysql_query("SELECT * FROM Users WHERE login = '$login' AND password = '$password'"); + if($data = mysql_fetch_assoc($q)) { + return $data; + } + if($handle) { + echo 'Wrong login/password.'; + } + } + if($handle) { + ?> + <form action="" method="post"> + <input type="hidden" name="openid.assoc_handle" value="<?php echo $handle?>"> + Login: <input type="text" name="login"><br> + Password: <input type="password" name="password"><br> + <button>Submit</button> + </form> + <?php + die(); + } +*/ + +} + +class MysqlProvider extends LightOpenIDProvider +{ + private $attrMap = array( + 'namePerson/first' => 'First name', + 'namePerson/last' => 'Last name', + 'namePerson/friendly' => 'Nickname (login)' + ); + + private $attrFieldMap = array( + 'namePerson/first' => 'firstName', + 'namePerson/last' => 'lastName', + 'namePerson/friendly' => 'login' + ); + + function setup($identity, $realm, $assoc_handle, $attributes) + { + $data = getUserData($assoc_handle); + $o .= '<form action="" method="post">' + . '<input type="hidden" name="openid.assoc_handle" value="' . $assoc_handle . '">' + . '<input type="hidden" name="login" value="' . $_POST['login'] .'">' + . '<input type="hidden" name="password" value="' . $_POST['password'] .'">' + . "<b>$realm</b> wishes to authenticate you."; + if($attributes['required'] || $attributes['optional']) { + $o .= " It also requests following information (required fields marked with *):" + . '<ul>'; + + foreach($attributes['required'] as $attr) { + if(isset($this->attrMap[$attr])) { + $o .= '<li>' + . '<input type="checkbox" name="attributes[' . $attr . ']"> ' + . $this->attrMap[$attr] . '(*)</li>'; + } + } + + foreach($attributes['optional'] as $attr) { + if(isset($this->attrMap[$attr])) { + $o .= '<li>' + . '<input type="checkbox" name="attributes[' . $attr . ']"> ' + . $this->attrMap[$attr] . '</li>'; + } + } + $o .= '</ul>'; + } + $o .= '<br>' + . '<button name="once">Allow once</button> ' + . '<button name="always">Always allow</button> ' + . '<button name="cancel">cancel</button> ' + . '</form>'; + + get_app()->page['content'] = $o; + + } + + function checkid($realm, &$attributes) + { + if(isset($_POST['cancel'])) { + $this->cancel(); + } + + $data = getUserData(); + if(!$data) { + return false; + } + $realm = mysql_real_escape_string($realm); + + + $q = mysql_query("SELECT attributes FROM AllowedSites WHERE user = '{$data['id']}' AND realm = '$realm'"); + + $attrs = array(); + if($attrs = mysql_fetch_row($q)) { + $attrs = explode(',', $attributes[0]); + } elseif(isset($_POST['attributes'])) { + $attrs = array_keys($_POST['attributes']); + } elseif(!isset($_POST['once']) && !isset($_POST['always'])) { + return false; + } + + $attributes = array(); + foreach($attrs as $attr) { + if(isset($this->attrFieldMap[$attr])) { + $attributes[$attr] = $data[$this->attrFieldMap[$attr]]; + } + } + + if(isset($_POST['always'])) { + $attrs = mysql_real_escape_string(implode(',', array_keys($attributes))); + mysql_query("REPLACE INTO AllowedSites VALUES('{$data['id']}', '$realm', '$attrs')"); + } + + return $this->serverLocation . '?' . $data['login']; + } + + function assoc_handle() + { + # We generate an integer assoc handle, because it's just faster to look up an integer later. + $q = mysql_query("SELECT MAX(id) FROM Associations"); + $result = mysql_fetch_row($q); + return $q[0]+1; + } + + function setAssoc($handle, $data) + { + $data = mysql_real_escape_string(serialize($data)); + mysql_query("REPLACE INTO Associations VALUES('$handle', '$data')"); + } + + function getAssoc($handle) + { + if(!is_numeric($handle)) { + return false; + } + $q = mysql_query("SELECT data FROM Associations WHERE id = '$handle'"); + $data = mysql_fetch_row($q); + if(!$data) { + return false; + } + return unserialize($data[0]); + } + + function delAssoc($handle) + { + if(!is_numeric($handle)) { + return false; + } + mysql_query("DELETE FROM Associations WHERE id = '$handle'"); + } + +} +$op = new MysqlProvider; +$op->server(); + +} + + + + + + + + + + + |