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<?php
/**
* Copyright 2014 Freemius, Inc.
*
* Licensed under the GPL v2 (the "License"); you may
* not use this file except in compliance with the License. You may obtain
* a copy of the License at
*
* http://choosealicense.com/licenses/gpl-v2/
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
if ( ! defined( 'FS_API__VERSION' ) ) {
define( 'FS_API__VERSION', '1' );
}
if ( ! defined( 'FS_SDK__PATH' ) ) {
define( 'FS_SDK__PATH', dirname( __FILE__ ) );
}
if ( ! defined( 'FS_SDK__EXCEPTIONS_PATH' ) ) {
define( 'FS_SDK__EXCEPTIONS_PATH', FS_SDK__PATH . '/Exceptions/' );
}
if ( ! function_exists( 'json_decode' ) ) {
throw new Exception( 'Freemius needs the JSON PHP extension.' );
}
// Include all exception files.
$exceptions = array(
'Exception',
'InvalidArgumentException',
'ArgumentNotExistException',
'EmptyArgumentException',
'OAuthException'
);
foreach ( $exceptions as $e ) {
require_once FS_SDK__EXCEPTIONS_PATH . $e . '.php';
}
if ( class_exists( 'Freemius_Api_Base' ) ) {
return;
}
abstract class Freemius_Api_Base {
const VERSION = '1.0.4';
const FORMAT = 'json';
protected $_id;
protected $_public;
protected $_secret;
protected $_scope;
protected $_isSandbox;
/**
* @param string $pScope 'app', 'developer', 'plugin', 'user' or 'install'.
* @param number $pID Element's id.
* @param string $pPublic Public key.
* @param string $pSecret Element's secret key.
* @param bool $pIsSandbox Whether or not to run API in sandbox mode.
*/
public function Init( $pScope, $pID, $pPublic, $pSecret, $pIsSandbox = false ) {
$this->_id = $pID;
$this->_public = $pPublic;
$this->_secret = $pSecret;
$this->_scope = $pScope;
$this->_isSandbox = $pIsSandbox;
}
public function IsSandbox() {
return $this->_isSandbox;
}
function CanonizePath( $pPath ) {
$pPath = trim( $pPath, '/' );
$query_pos = strpos( $pPath, '?' );
$query = '';
if ( false !== $query_pos ) {
$query = substr( $pPath, $query_pos );
$pPath = substr( $pPath, 0, $query_pos );
}
// Trim '.json' suffix.
$format_length = strlen( '.' . self::FORMAT );
$start = $format_length * ( - 1 ); //negative
if ( substr( strtolower( $pPath ), $start ) === ( '.' . self::FORMAT ) ) {
$pPath = substr( $pPath, 0, strlen( $pPath ) - $format_length );
}
switch ( $this->_scope ) {
case 'app':
$base = '/apps/' . $this->_id;
break;
case 'developer':
$base = '/developers/' . $this->_id;
break;
case 'user':
$base = '/users/' . $this->_id;
break;
case 'plugin':
$base = '/plugins/' . $this->_id;
break;
case 'install':
$base = '/installs/' . $this->_id;
break;
default:
throw new Freemius_Exception( 'Scope not implemented.' );
}
return '/v' . FS_API__VERSION . $base .
( ! empty( $pPath ) ? '/' : '' ) . $pPath .
( ( false === strpos( $pPath, '.' ) ) ? '.' . self::FORMAT : '' ) . $query;
}
abstract function MakeRequest( $pCanonizedPath, $pMethod = 'GET', $pParams = array() );
/**
* @param string $pPath
* @param string $pMethod
* @param array $pParams
*
* @return object[]|object|null
*/
private function _Api( $pPath, $pMethod = 'GET', $pParams = array() ) {
$pMethod = strtoupper( $pMethod );
try {
$result = $this->MakeRequest( $pPath, $pMethod, $pParams );
} catch ( Freemius_Exception $e ) {
// Map to error object.
$result = (object) $e->getResult();
} catch ( Exception $e ) {
// Map to error object.
$result = (object) array(
'error' => array(
'type' => 'Unknown',
'message' => $e->getMessage() . ' (' . $e->getFile() . ': ' . $e->getLine() . ')',
'code' => 'unknown',
'http' => 402
)
);
}
return $result;
}
public function Api( $pPath, $pMethod = 'GET', $pParams = array() ) {
return $this->_Api( $this->CanonizePath( $pPath ), $pMethod, $pParams );
}
/**
* Base64 decoding that does not need to be urldecode()-ed.
*
* Exactly the same as PHP base64 encode except it uses
* `-` instead of `+`
* `_` instead of `/`
* No padded =
*
* @param string $input Base64UrlEncoded() string
*
* @return string
*/
protected static function Base64UrlDecode( $input ) {
/**
* IMPORTANT NOTE:
* This is a hack suggested by @otto42 and @greenshady from
* the theme's review team. The usage of base64 for API
* signature encoding was approved in a Slack meeting
* held on Tue (10/25 2016).
*
* @todo Remove this hack once the base64 error is removed from the Theme Check.
*
* @since 1.2.2
* @author Vova Feldman (@svovaf)
*/
$fn = 'base64' . '_decode';
return $fn( strtr( $input, '-_', '+/' ) );
}
/**
* Base64 encoding that does not need to be urlencode()ed.
*
* Exactly the same as base64 encode except it uses
* `-` instead of `+
* `_` instead of `/`
*
* @param string $input string
*
* @return string Base64 encoded string
*/
protected static function Base64UrlEncode( $input ) {
/**
* IMPORTANT NOTE:
* This is a hack suggested by @otto42 and @greenshady from
* the theme's review team. The usage of base64 for API
* signature encoding was approved in a Slack meeting
* held on Tue (10/25 2016).
*
* @todo Remove this hack once the base64 error is removed from the Theme Check.
*
* @since 1.2.2
* @author Vova Feldman (@svovaf)
*/
$fn = 'base64' . '_encode';
$str = strtr( $fn( $input ), '+/', '-_' );
$str = str_replace( '=', '', $str );
return $str;
}
}
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