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|
<?php
/**
* Jetpack_Tracks_Client
* @autounit nosara tracks-client
*
* Send Tracks events on behalf of a user
*
* Example Usage:
```php
require( dirname(__FILE__).'path/to/tracks/class.tracks-client' );
$result = Jetpack_Tracks_Client::record_event( array(
'_en' => $event_name, // required
'_ui' => $user_id, // required unless _ul is provided
'_ul' => $user_login, // required unless _ui is provided
// Optional, but recommended
'_ts' => $ts_in_ms, // Default: now
'_via_ip' => $client_ip, // we use it for geo, etc.
// Possibly useful to set some context for the event
'_via_ua' => $client_user_agent,
'_via_url' => $client_url,
'_via_ref' => $client_referrer,
// For user-targeted tests
'abtest_name' => $abtest_name,
'abtest_variation' => $abtest_variation,
// Your application-specific properties
'custom_property' => $some_value,
) );
if ( is_wp_error( $result ) ) {
// Handle the error in your app
}
```
*/
require_once( dirname(__FILE__).'/class.tracks-client.php' );
class Jetpack_Tracks_Client {
const PIXEL = 'https://pixel.wp.com/t.gif';
const BROWSER_TYPE = 'php-agent';
const USER_AGENT_SLUG = 'tracks-client';
const VERSION = '0.3';
/**
* record_event
* @param mixed $event Event object to send to Tracks. An array will be cast to object. Required.
* Properties are included directly in the pixel query string after light validation.
* @return mixed True on success, WP_Error on failure
*/
static function record_event( $event ) {
if ( ! $event instanceof Jetpack_Tracks_Event ) {
$event = new Jetpack_Tracks_Event( $event );
}
if ( is_wp_error( $event ) ) {
return $event;
}
$pixel = $event->build_pixel_url( $event );
if ( ! $pixel ) {
return new WP_Error( 'invalid_pixel', 'cannot generate tracks pixel for given input', 400 );
}
return self::record_pixel( $pixel );
}
/**
* Synchronously request the pixel
*/
static function record_pixel( $pixel ) {
// Add the Request Timestamp and URL terminator just before the HTTP request.
$pixel .= '&_rt=' . self::build_timestamp() . '&_=_';
$response = wp_remote_get( $pixel, array(
'blocking' => true, // The default, but being explicit here :)
'timeout' => 1,
'redirection' => 2,
'httpversion' => '1.1',
'user-agent' => self::get_user_agent(),
) );
if ( is_wp_error( $response ) ) {
return $response;
}
$code = isset( $response['response']['code'] ) ? $response['response']['code'] : 0;
if ( $code !== 200 ) {
return new WP_Error( 'request_failed', 'Tracks pixel request failed', $code );
}
return true;
}
static function get_user_agent() {
return Jetpack_Tracks_Client::USER_AGENT_SLUG . '-v' . Jetpack_Tracks_Client::VERSION;
}
/**
* Build an event and return its tracking URL
* @deprecated Call the `build_pixel_url` method on a Jetpack_Tracks_Event object instead.
* @param array $event Event keys and values
* @return string URL of a tracking pixel
*/
static function build_pixel_url( $event ) {
$_event = new Jetpack_Tracks_Event( $event );
return $_event->build_pixel_url();
}
/**
* Validate input for a tracks event.
* @deprecated Instantiate a Jetpack_Tracks_Event object instead
* @param array $event Event keys and values
* @return mixed Validated keys and values or WP_Error on failure
*/
private static function validate_and_sanitize( $event ) {
$_event = new Jetpack_Tracks_Event( $event );
if ( is_wp_error( $_event ) ) {
return $_event;
}
return get_object_vars( $_event );
}
// Milliseconds since 1970-01-01
static function build_timestamp() {
$ts = round( microtime( true ) * 1000 );
return number_format( $ts, 0, '', '' );
}
/**
* Grabs the user's anon id from cookies, or generates and sets a new one
*
* @return string An anon id for the user
*/
static function get_anon_id() {
static $anon_id = null;
if ( ! isset( $anon_id ) ) {
// Did the browser send us a cookie?
if ( isset( $_COOKIE[ 'tk_ai' ] ) && preg_match( '#^[A-Za-z0-9+/=]{24}$#', $_COOKIE[ 'tk_ai' ] ) ) {
$anon_id = $_COOKIE[ 'tk_ai' ];
} else {
$binary = '';
// Generate a new anonId and try to save it in the browser's cookies
// Note that base64-encoding an 18 character string generates a 24-character anon id
for ( $i = 0; $i < 18; ++$i ) {
$binary .= chr( mt_rand( 0, 255 ) );
}
$anon_id = 'jetpack:' . base64_encode( $binary );
if ( ! headers_sent() ) {
setcookie( 'tk_ai', $anon_id );
}
}
}
return $anon_id;
}
/**
* Gets the WordPress.com user's Tracks identity, if connected.
*
* @return array|bool
*/
static function get_connected_user_tracks_identity() {
if ( ! $user_data = Jetpack::get_connected_user_data() ) {
return false;
}
return array(
'userid' => $user_data['ID'],
'username' => $user_data['login'],
);
}
}
|
GitWeb