<?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();
		return false;
	}

//	logger('handle: ' . $handle);

	if($handle) {
		$r = q("select * from channel left join xchan on channel_hash = xchan_hash where channel_address = '%s' limit 1",
			dbesc($handle)
		);
	}
	else {
		$r = q("select * from channel left join xchan on channel_hash = xchan_hash where channel_id = %d",
			intval(local_channel())
		);
	}

	if(! r)
		return false;

	$x = q("select * from account where account_id = %d limit 1", 
		intval($r[0]['channel_account_id'])
	);
	if($x)
		$r[0]['email'] = $x[0]['account_email'];

	$p = q("select * from profile where is_default = 1 and uid = %d limit 1",
		intval($r[0]['channel_account_id'])
	);


	$gender = '';
	if($p[0]['gender'] == t('Male'))
		$gender = 'M';
	if($p[0]['gender'] == t('Female'))
		$gender = 'F';
		
	$r[0]['firstName'] = ((strpos($r[0]['channel_name'],' ')) ? substr($r[0]['channel_name'],0,strpos($r[0]['channel_name'],' ')) : $r[0]['channel_name']);
	$r[0]['lastName'] = ((strpos($r[0]['channel_name'],' ')) ? substr($r[0]['channel_name'],strpos($r[0]['channel_name'],' ')+1) : '');
	$r[0]['namePerson'] = $r[0]['channel_name'];
	$r[0]['pphoto'] = $r[0]['xchan_photo_l'];
	$r[0]['pphoto16'] = z_root() . '/photo/profile/16/' . $r[0]['channel_id'] . '.jpg';
	$r[0]['pphoto32'] = z_root() . '/photo/profile/32/' . $r[0]['channel_id'] . '.jpg';
	$r[0]['pphoto48'] = z_root() . '/photo/profile/48/' . $r[0]['channel_id'] . '.jpg';
	$r[0]['pphoto64'] = z_root() . '/photo/profile/64/' . $r[0]['channel_id'] . '.jpg';
	$r[0]['pphoto80'] = z_root() . '/photo/profile/80/' . $r[0]['channel_id'] . '.jpg';
	$r[0]['pphoto128'] = z_root() . '/photo/profile/128/' . $r[0]['channel_id'] . '.jpg';
	$r[0]['timezone'] = $r[0]['channel_timezone'];
	$r[0]['url'] = $r[0]['xchan_url'];
	$r[0]['language'] = (($x[0]['account_language']) ? $x[0]['account_language'] : 'en');
	$r[0]['birthyear'] = ((intval(substr($p[0]['dob'],0,4))) ? intval(substr($p[0]['dob'],0,4)) : '');
	$r[0]['birthmonth'] = ((intval(substr($p[0]['dob'],5,2))) ? intval(substr($p[0]['dob'],5,2)) : '');
	$r[0]['birthday'] = ((intval(substr($p[0]['dob'],8,2))) ? intval(substr($p[0]['dob'],8,2)) : '');
	$r[0]['birthdate'] = (($r[0]['birthyear'] && $r[0]['birthmonth'] && $r[0]['birthday']) ? $p[0]['dob'] : '');
	$r[0]['gender'] = $gender;
	
	return $r[0];

/*
    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();
    }
*/

}


function translate_regs() {

	// This exists to get around scoping rules

	$attrMap = array(
        'namePerson/first'       => t('First Name'),
        'namePerson/last'        => t('Last Name'),
        'namePerson/friendly'    => t('Nickname'),
		'namePerson'             => t('Full Name'),
		'contact/internet/email' => t('Email'),
		'contact/email'          => t('Email'),
		'media/image/aspect11'   => t('Profile Photo'),
		'media/image'            => t('Profile Photo'),
		'media/image/default'    => t('Profile Photo'),
		'media/image/16x16'      => t('Profile Photo 16px'),
		'media/image/32x32'      => t('Profile Photo 32px'),
		'media/image/48x48'      => t('Profile Photo 48px'),
		'media/image/64x64'      => t('Profile Photo 64px'),
		'media/image/80x80'      => t('Profile Photo 80px'),
		'media/image/128x128'    => t('Profile Photo 128px'),
		'timezone'               => t('Timezone'),
		'contact/web/default'    => t('Homepage URL'),
		'language/pref'          => t('Language'),
		'birthDate/birthYear'    => t('Birth Year'),
		'birthDate/birthMonth'   => t('Birth Month'),
		'birthDate/birthday'     => t('Birth Day'),
		'birthDate'              => t('Birthdate'),
		'gender'                 => t('Gender'),
	);
   
	return $attrMap;
}


class MysqlProvider extends LightOpenIDProvider
{

	// See http://openid.net/specs/openid-attribute-properties-list-1_0-01.html
	// This list contains a few variations of these attributes to maintain 
	// compatibility with legacy clients

	private $attrMap = array(
        'namePerson/first'       => 'First Name',
        'namePerson/last'        => 'Last Name',
        'namePerson/friendly'    => 'Nickname',
		'namePerson'             => 'Full Name',
		'contact/internet/email' => 'Email',
		'contact/email'          => 'Email',
		'media/image/aspect11'   => 'Profile Photo',
		'media/image'            => 'Profile Photo',
		'media/image/default'    => 'Profile Photo',
		'media/image/16x16'      => 'Profile Photo 16px',
		'media/image/32x32'      => 'Profile Photo 32px',
		'media/image/48x48'      => 'Profile Photo 48px',
		'media/image/64x64'      => 'Profile Photo 64px',
		'media/image/80x80'      => 'Profile Photo 80px',
		'media/image/128x128'    => 'Profile Photo 128px',
		'timezone'               => 'Timezone',
		'contact/web/default'    => 'Homepage URL',
		'language/pref'          => 'Language',
		'birthDate/birthYear'    => 'Birth Year',
		'birthDate/birthMonth'   => 'Birth Month',
		'birthDate/birthday'     => 'Birth Day',
		'birthDate'              => 'Birthdate',
		'gender'                 => 'Gender',
	);

    private $attrFieldMap = array(
        'namePerson/first'       => 'firstName',
        'namePerson/last'        => 'lastName',
        'namePerson/friendly'    => 'channel_address',
		'namePerson'             => 'namePerson',
		'contact/internet/email' => 'email',
		'contact/email'          => 'email',
		'media/image/aspect11'   => 'pphoto',
		'media/image'            => 'pphoto',
		'media/image/default'    => 'pphoto',
		'media/image/16x16'      => 'pphoto16',
		'media/image/32x32'      => 'pphoto32',
		'media/image/48x48'      => 'pphoto48',
		'media/image/64x64'      => 'pphoto64',
		'media/image/80x80'      => 'pphoto80',
		'media/image/128x128'    => 'pphoto128',
		'timezone'               => 'timezone',
		'contact/web/default'    => 'url',
		'language/pref'          => 'language',
		'birthDate/birthYear'    => 'birthyear',
		'birthDate/birthMonth'   => 'birthmonth',
		'birthDate/birthday'     => 'birthday',
		'birthDate'              => 'birthdate',
		'gender'                 => 'gender',
        );
  
  
    function setup($identity, $realm, $assoc_handle, $attributes)
    {

//		logger('identity: ' . $identity);
//		logger('realm: ' . $realm);
//		logger('assoc_handle: ' . $assoc_handle);
//		logger('attributes: ' . print_r($attributes,true));

        $data = getUserData($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] . ' <span class="required">*</span></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)
    {

		logger('checkid: ' . $realm);

		logger('checkid attrs: ' . print_r($attributes,true));


        if(isset($_POST['cancel'])) {
            $this->cancel();
        }
        
        $data = getUserData();
        if(! $data) {
            return false;
        }


		logger('checkid: checkpoint1');


		$q = get_pconfig(local_channel(),'openid',$realm);

		$attrs = array();
		if($q) {
			$attrs = $q;
        } elseif(isset($_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($_POST['always'])) {
			set_pconfig(local_channel(),'openid',$realm,array_keys($attributes));
        }
  
		return z_root() . '/id/' . $data['channel_address'];      
    }
    
    function assoc_handle()
    {
		
		$channel = get_app()->get_channel();
		return z_root() . '/id/' . $channel['channel_address']; 

    }
    
    function setAssoc($handle, $data)
    {
		logger('setAssoc');
		$channel = channelx_by_nick(basename($handle));
		if($channel)
			set_pconfig($channel['channel_id'],'openid','associate',$data);

    }
    
    function getAssoc($handle)
    {
		logger('getAssoc: ' . $handle);

		$channel = channelx_by_nick(basename($handle));
		if($channel)
			return get_pconfig($channel['channel_id'],'openid','associate');
		return false;
    }
    
    function delAssoc($handle)
    {
		logger('delAssoc');
		$channel = channelx_by_nick(basename($handle));
		if($channel)
			return del_pconfig($channel['channel_id'],'openid','associate');
    }
    
}
$op = new MysqlProvider;
$op->server();

}