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CHIEFSOFT\ameye
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<?php
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/**
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* Twitter API
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*
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* @package Powerkit
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* @subpackage Extensions
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*/
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if ( class_exists( 'Powerkit_Module' ) ) {
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/**
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* Init module
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*/
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class Powerkit_Twitter_API extends Powerkit_Module {
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/**
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* Register module
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*/
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public function register() {
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$this->name = 'Twitter API';
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$this->slug = 'twitter-api';
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$this->type = 'extension';
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$this->category = 'basic';
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$this->public = false;
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$this->enabled = false;
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}
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/**
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* The base_url.
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*
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* @var string $base_url The base_url.
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*/
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protected $base_url;
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/**
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* The get_fields.
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*
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* @var string $get_fields The get_fields.
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*/
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private $get_fields;
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/**
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* The oauth.
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*
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* @var string $oauth The oauth.
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*/
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private $oauth;
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/**
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* The header.
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*
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* @var string $header The header.
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*/
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private $header;
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/**
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* The json.
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*
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* @var string $json The json.
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*/
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public $json;
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/**
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* Init API
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*
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* @param array $request_settings All necessary tokens for OAuth connection.
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* @param string $feed_type Type of Twitter feed.
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*/
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public function init( $request_settings, $feed_type ) {
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$this->consumer_key = $request_settings['consumer_key'];
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$this->consumer_secret = $request_settings['consumer_secret'];
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$this->access_token = $request_settings['access_token'];
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$this->access_token_secret = $request_settings['access_token_secret'];
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$this->feed_type = $feed_type;
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}
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/**
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* Sets the complete url for our API endpoint. GET fields will be added later
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*/
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public function set_url_base() {
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switch ( $this->feed_type ) {
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case 'hometimeline':
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$this->base_url = 'https://api.twitter.com/1.1/statuses/home_timeline.json';
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break;
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case 'search':
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$this->base_url = 'https://api.twitter.com/1.1/search/tweets.json';
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break;
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default:
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$this->base_url = 'https://api.twitter.com/1.1/statuses/user_timeline.json';
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}
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}
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/**
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* Encodes an array of GET field data into html characters for including in a URL
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*
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* @param array $get_fields Array of GET fields that are compatible with the Twitter API.
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*/
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public function set_get_fields( array $get_fields ) {
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$url_string = '?';
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$length = count( $get_fields );
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$j = 1;
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foreach ( $get_fields as $key => $value ) {
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$url_string .= rawurlencode( $key ) . '=' . rawurlencode( $value );
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if ( $j != $length ) {
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$url_string .= '&';
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}
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$j++;
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}
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$this->get_fields = $url_string;
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}
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/**
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* Uses the OAuth data to build the base string needed to create the
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* OAuth signature to be used in the header of the request
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*
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* @param array $oauth Oauth data without the signature.
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*/
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private function build_base_string( $oauth ) {
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$base_string = array();
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ksort( $oauth );
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// Start forming the header string by creating a numeric index array with each part of the header string it's own element in the array.
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foreach ( $oauth as $key => $value ) {
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$base_string[] = rawurlencode( $key ) . '=' . rawurlencode( $value );
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}
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// Convert the array of values into a single encoded string and return.
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return 'GET&' . rawurlencode( $this->base_url ) . '&' . rawurlencode( implode( '&', $base_string ) );
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}
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/**
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* Builds the OAuth data array that is used to authenticate the connection
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* to the Twitter API
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*/
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public function build_oauth() {
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$oauth = array(
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'oauth_consumer_key' => $this->consumer_key,
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'oauth_nonce' => time(),
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'oauth_signature_method' => 'HMAC-SHA1',
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'oauth_token' => $this->access_token,
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'oauth_timestamp' => time(),
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'oauth_version' => '1.0',
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);
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$getfields = str_replace( '?', '', explode( '&', $this->get_fields ) );
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// Add the get fields to the oauth associative array to be formed into the header string eventually.
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foreach ( $getfields as $getfield ) {
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$split = explode( '=', $getfield );
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if ( isset( $split[1] ) ) {
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$oauth[ $split[0] ] = urldecode( $split[1] );
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}
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}
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// The OAuth signature for Twitter is a hashed, encoded version of the base url, 4 different keys.
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$base_string = $this->build_base_string( $oauth );
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$composite_key = rawurlencode( $this->consumer_secret ) . '&' . rawurlencode( $this->access_token_secret );
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$oauth_signature = base64_encode( hash_hmac( 'sha1', $base_string, $composite_key, true ) );
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$oauth['oauth_signature'] = $oauth_signature;
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$this->oauth = $oauth;
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}
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/**
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* Since the OAuth data is passed in a url, special characters need to be encoded
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*/
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private function encode_header() {
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$header = 'Authorization: OAuth ';
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$values = array();
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// Each element of the header needs to have it's special characters encoded for passing through a url.
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foreach ( $this->oauth as $key => $value ) {
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if ( in_array(
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$key,
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array(
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'oauth_consumer_key',
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'oauth_nonce',
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'oauth_signature',
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'oauth_signature_method',
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'oauth_timestamp',
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'oauth_token',
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'oauth_version',
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)
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) ) {
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$values[] = "$key=\"" . rawurlencode( $value ) . '"';
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}
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}
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$header .= implode( ', ', $values );
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$this->header = $header;
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}
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/**
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* Attempts to connect to the Twitter api using WP_HTTP class
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*
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* @param string $url The complete api endpoint url.
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*/
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private function wp_http_request( $url ) {
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$args = array(
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'headers' => $this->header,
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'timeout' => 60,
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'sslverify' => false,
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);
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return wp_remote_get( $url, $args );
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}
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/**
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* Uses the data created and gathered up to this point to make the actual connection
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* to the Twitter API. It first tests whether or not a curl connection is possible,
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* followed by file_get_contents connection, then defaults to the WordPress WP_HTTP object
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*
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* @return mixed|string raw json data retrieved from the API request
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*/
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public function perform_request() {
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$url = $this->base_url . $this->get_fields;
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$this->build_oauth();
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$this->encode_header();
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$this->json = $this->wp_http_request( $url );
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return $this;
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}
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}
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}
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