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