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<?php
/**
* Connectors API.
*
* @package WordPress
* @subpackage Connectors
* @since 7.0.0
*/
use WordPress\AiClient\AiClient;
use WordPress\AiClient\Providers\Http\DTO\ApiKeyRequestAuthentication;
/**
* Checks if a connector is registered.
*
* @since 7.0.0
*
* @see WP_Connector_Registry::is_registered()
*
* @param string $id The connector identifier.
* @return bool True if the connector is registered, false otherwise.
*/
function wp_is_connector_registered( string $id ): bool {
$registry = WP_Connector_Registry::get_instance();
if ( null === $registry ) {
return false;
}
return $registry->is_registered( $id );
}
/**
* Retrieves a registered connector.
*
* @since 7.0.0
*
* @see WP_Connector_Registry::get_registered()
*
* @param string $id The connector identifier.
* @return array|null {
* Connector data, or null if not registered.
*
* @type string $name The connector's display name.
* @type string $description The connector's description.
* @type string $logo_url Optional. URL to the connector's logo image.
* @type string $type The connector type, e.g. 'ai_provider'.
* @type array $authentication {
* Authentication configuration. When method is 'api_key', includes
* credentials_url, setting_name, and optionally constant_name and
* env_var_name. When 'none', only method is present.
*
* @type string $method The authentication method: 'api_key' or 'none'.
* @type string $credentials_url Optional. URL where users can obtain API credentials.
* @type string $setting_name Optional. The setting name for the API key.
* @type string $constant_name Optional. PHP constant name for the API key.
* @type string $env_var_name Optional. Environment variable name for the API key.
* }
* @type array $plugin {
* Optional. Plugin data for install/activate UI.
*
* @type string $file The plugin's main file path relative to the plugins
* directory (e.g. 'my-plugin/my-plugin.php' or 'hello.php').
* @type callable $is_active Callback to determine whether the plugin is active. Receives no arguments and must return bool.
* Defaults to `__return_true`.
* }
* }
* @phpstan-return ?array{
* name: non-empty-string,
* description: string,
* logo_url?: non-empty-string,
* type: non-empty-string,
* authentication: array{
* method: 'api_key'|'none',
* credentials_url?: non-empty-string,
* setting_name?: non-empty-string,
* constant_name?: non-empty-string,
* env_var_name?: non-empty-string
* },
* plugin: array{
* file?: non-empty-string,
* is_active: callable(): bool,
* }
* }
*/
function wp_get_connector( string $id ): ?array {
$registry = WP_Connector_Registry::get_instance();
if ( null === $registry ) {
return null;
}
return $registry->get_registered( $id );
}
/**
* Retrieves all registered connectors.
*
* @since 7.0.0
*
* @see WP_Connector_Registry::get_all_registered()
*
* @return array {
* Connector settings keyed by connector ID.
*
* @type array ...$0 {
* Data for a single connector.
*
* @type string $name The connector's display name.
* @type string $description The connector's description.
* @type string $logo_url Optional. URL to the connector's logo image.
* @type string $type The connector type, e.g. 'ai_provider'.
* @type array $authentication {
* Authentication configuration. When method is 'api_key', includes
* credentials_url, setting_name, and optionally constant_name and
* env_var_name. When 'none', only method is present.
*
* @type string $method The authentication method: 'api_key' or 'none'.
* @type string $credentials_url Optional. URL where users can obtain API credentials.
* @type string $setting_name Optional. The setting name for the API key.
* @type string $constant_name Optional. PHP constant name for the API key.
* @type string $env_var_name Optional. Environment variable name for the API key.
* }
* @type array $plugin {
* Optional. Plugin data for install/activate UI.
*
* @type string $file The plugin's main file path relative to the plugins
* directory (e.g. 'my-plugin/my-plugin.php' or 'hello.php').
* @type callable $is_active Callback to determine whether the plugin is active. Receives no arguments and must return bool.
* Defaults to `__return_true`.
* }
* }
* }
* @phpstan-return array<string, array{
* name: non-empty-string,
* description: string,
* logo_url?: non-empty-string,
* type: non-empty-string,
* authentication: array{
* method: 'api_key'|'none',
* credentials_url?: non-empty-string,
* setting_name?: non-empty-string,
* constant_name?: non-empty-string,
* env_var_name?: non-empty-string
* },
* plugin: array{
* file?: non-empty-string,
* is_active: callable(): bool,
* }
* }>
*/
function wp_get_connectors(): array {
$registry = WP_Connector_Registry::get_instance();
if ( null === $registry ) {
return array();
}
return $registry->get_all_registered();
}
/**
* Resolves an AI provider logo file path to a URL.
*
* Converts an absolute file path to a plugin URL. The path must reside within
* the plugins or must-use plugins directory.
*
* @since 7.0.0
* @access private
*
* @param string $path Absolute path to the logo file.
* @return non-empty-string|null The URL to the logo file, or null if the path is invalid.
*/
function _wp_connectors_resolve_ai_provider_logo_url( string $path ): ?string {
if ( ! $path ) {
return null;
}
$path = wp_normalize_path( $path );
if ( ! file_exists( $path ) ) {
return null;
}
$mu_plugin_dir = wp_normalize_path( WPMU_PLUGIN_DIR );
if ( str_starts_with( $path, $mu_plugin_dir . '/' ) ) {
$logo_url = plugins_url( substr( $path, strlen( $mu_plugin_dir ) ), WPMU_PLUGIN_DIR . '/.' );
return $logo_url ? $logo_url : null;
}
$plugin_dir = wp_normalize_path( WP_PLUGIN_DIR );
if ( str_starts_with( $path, $plugin_dir . '/' ) ) {
$logo_url = plugins_url( substr( $path, strlen( $plugin_dir ) ) );
return $logo_url ? $logo_url : null;
}
_doing_it_wrong(
__FUNCTION__,
__( 'Provider logo path must be located within the plugins or must-use plugins directory.' ),
'7.0.0'
);
return null;
}
/**
* Initializes the connector registry with default connectors and fires the registration action.
*
* Creates the registry instance, registers built-in connectors (which cannot be unhooked),
* and then fires the `wp_connectors_init` action for plugins to register their own connectors.
*
* @since 7.0.0
* @access private
*/
function _wp_connectors_init(): void {
$registry = new WP_Connector_Registry();
WP_Connector_Registry::set_instance( $registry );
// Only register default AI providers if AI support is enabled.
if ( wp_supports_ai() ) {
_wp_connectors_register_default_ai_providers( $registry );
}
// Non-AI default connectors.
$registry->register(
'akismet',
array(
'name' => __( 'Akismet Anti-spam' ),
'description' => __( 'Protect your site from spam.' ),
'type' => 'spam_filtering',
'plugin' => array(
'file' => 'akismet/akismet.php',
'is_active' => static function () {
return defined( 'AKISMET_VERSION' );
},
),
'authentication' => array(
'method' => 'api_key',
'credentials_url' => 'https://akismet.com/get/',
'setting_name' => 'wordpress_api_key',
'constant_name' => 'WPCOM_API_KEY',
),
)
);
/**
* Fires when the connector registry is ready for plugins to register connectors.
*
* Built-in connectors and any AI providers auto-discovered from the WP AI Client
* registry have already been registered at this point and cannot be unhooked.
*
* AI provider plugins that register with the WP AI Client do not need to use
* this action — their connectors are created automatically. This action is
* primarily for registering non-AI-provider connectors or overriding metadata
* on existing connectors.
*
* Use `$registry->register()` within this action to add new connectors.
* To override an existing connector, unregister it first, then re-register
* with updated data.
*
* Example — overriding metadata on an auto-discovered connector:
*
* add_action( 'wp_connectors_init', function ( WP_Connector_Registry $registry ) {
* if ( $registry->is_registered( 'anthropic' ) ) {
* $connector = $registry->unregister( 'anthropic' );
* $connector['description'] = __( 'Custom description for Anthropic.', 'my-plugin' );
* $registry->register( 'anthropic', $connector );
* }
* } );
*
* @since 7.0.0
*
* @param WP_Connector_Registry $registry Connector registry instance.
*/
do_action( 'wp_connectors_init', $registry );
}
/**
* Registers connectors for the built-in AI providers.
*
* @since 7.0.0
* @access private
*
* @param WP_Connector_Registry $registry The connector registry instance.
*/
function _wp_connectors_register_default_ai_providers( WP_Connector_Registry $registry ): void {
// Built-in connectors.
$defaults = array(
'anthropic' => array(
'name' => 'Anthropic',
'description' => __( 'Text generation with Claude.' ),
'type' => 'ai_provider',
'plugin' => array(
'file' => 'ai-provider-for-anthropic/plugin.php',
),
'authentication' => array(
'method' => 'api_key',
'credentials_url' => 'https://platform.claude.com/settings/keys',
),
),
'google' => array(
'name' => 'Google',
'description' => __( 'Text and image generation with Gemini and Imagen.' ),
'type' => 'ai_provider',
'plugin' => array(
'file' => 'ai-provider-for-google/plugin.php',
),
'authentication' => array(
'method' => 'api_key',
'credentials_url' => 'https://aistudio.google.com/api-keys',
),
),
'openai' => array(
'name' => 'OpenAI',
'description' => __( 'Text and image generation with GPT and Dall-E.' ),
'type' => 'ai_provider',
'plugin' => array(
'file' => 'ai-provider-for-openai/plugin.php',
),
'authentication' => array(
'method' => 'api_key',
'credentials_url' => 'https://platform.openai.com/api-keys',
),
),
);
// Merge AI Client registry data on top of defaults.
// Registry values (from provider plugins) take precedence over hardcoded fallbacks.
$ai_registry = AiClient::defaultRegistry();
foreach ( array_filter( $ai_registry->getRegisteredProviderIds() ) as $connector_id ) {
$provider_class_name = $ai_registry->getProviderClassName( $connector_id );
$provider_metadata = $provider_class_name::metadata();
$auth_method = $provider_metadata->getAuthenticationMethod();
$is_api_key = null !== $auth_method && $auth_method->isApiKey();
if ( $is_api_key ) {
$credentials_url = $provider_metadata->getCredentialsUrl();
$authentication = array(
'method' => 'api_key',
);
if ( $credentials_url ) {
$authentication['credentials_url'] = $credentials_url;
}
} else {
$authentication = array( 'method' => 'none' );
}
$name = $provider_metadata->getName();
$description = $provider_metadata->getDescription();
$logo_url = $provider_metadata->getLogoPath()
? _wp_connectors_resolve_ai_provider_logo_url( $provider_metadata->getLogoPath() )
: null;
if ( isset( $defaults[ $connector_id ] ) ) {
// Override fields with non-empty registry values.
if ( $name ) {
$defaults[ $connector_id ]['name'] = $name;
}
if ( $description ) {
$defaults[ $connector_id ]['description'] = $description;
}
if ( $logo_url ) {
$defaults[ $connector_id ]['logo_url'] = $logo_url;
}
// Always update auth method; keep existing credentials_url as fallback.
$defaults[ $connector_id ]['authentication']['method'] = $authentication['method'];
if ( ! empty( $authentication['credentials_url'] ) ) {
$defaults[ $connector_id ]['authentication']['credentials_url'] = $authentication['credentials_url'];
}
} else {
$defaults[ $connector_id ] = array(
'name' => $name ? $name : ucwords( $connector_id ),
'description' => $description ? $description : '',
'type' => 'ai_provider',
'authentication' => $authentication,
);
if ( $logo_url ) {
$defaults[ $connector_id ]['logo_url'] = $logo_url;
}
}
}
// Register all default connectors directly on the registry.
foreach ( $defaults as $id => $args ) {
if ( 'api_key' === $args['authentication']['method'] ) {
$sanitized_id = str_replace( '-', '_', $id );
$args['authentication']['setting_name'] = "connectors_ai_{$sanitized_id}_api_key";
// All AI providers use the {CONSTANT_CASE_ID}_API_KEY naming convention.
$constant_case_key = strtoupper( (string) preg_replace( '/([a-z])([A-Z])/', '$1_$2', $sanitized_id ) ) . '_API_KEY';
$args['authentication']['constant_name'] = $constant_case_key;
$args['authentication']['env_var_name'] = $constant_case_key;
}
$args['plugin']['is_active'] = static function () use ( $ai_registry, $id ): bool {
try {
return $ai_registry->hasProvider( $id );
} catch ( Exception $e ) {
return false;
}
};
$registry->register( $id, $args );
}
}
/**
* Masks an API key, showing only the last 4 characters.
*
* @since 7.0.0
* @access private
*
* @param string $key The API key to mask.
* @return string The masked key, e.g. "************fj39".
*/
function _wp_connectors_mask_api_key( string $key ): string {
if ( strlen( $key ) <= 4 ) {
return $key;
}
return str_repeat( "\u{2022}", min( strlen( $key ) - 4, 16 ) ) . substr( $key, -4 );
}
/**
* Determines the source of an API key for a given connector.
*
* Checks in order: environment variable, PHP constant, database.
* Environment variable and constant are only checked when their
* respective names are provided.
*
* @since 7.0.0
* @access private
*
* @param string $setting_name The option name for the API key (e.g., 'connectors_spam_filtering_my_plugin_api_key').
* @param string $env_var_name Optional. Environment variable name to check (e.g., 'MY_PLUGIN_API_KEY').
* @param string $constant_name Optional. PHP constant name to check (e.g., 'MY_PLUGIN_API_KEY').
* @return string The key source: 'env', 'constant', 'database', or 'none'.
*/
function _wp_connectors_get_api_key_source( string $setting_name, string $env_var_name = '', string $constant_name = '' ): string {
// Check environment variable first.
if ( '' !== $env_var_name ) {
$env_value = getenv( $env_var_name );
if ( false !== $env_value && '' !== $env_value ) {
return 'env';
}
}
// Check PHP constant.
if ( '' !== $constant_name && defined( $constant_name ) ) {
$const_value = constant( $constant_name );
if ( is_string( $const_value ) && '' !== $const_value ) {
return 'constant';
}
}
// Check database.
$db_value = get_option( $setting_name, '' );
if ( '' !== $db_value ) {
return 'database';
}
return 'none';
}
/**
* Checks whether an API key is valid for a given provider.
*
* @since 7.0.0
* @access private
*
* @param string $key The API key to check.
* @param string $provider_id The WP AI client provider ID.
* @return bool|null True if valid, false if invalid, null if unable to determine.
*/
function _wp_connectors_is_ai_api_key_valid( string $key, string $provider_id ): ?bool {
try {
$registry = AiClient::defaultRegistry();
if ( ! $registry->hasProvider( $provider_id ) ) {
_doing_it_wrong(
__FUNCTION__,
sprintf(
/* translators: %s: AI provider ID. */
__( 'The provider "%s" is not registered in the AI client registry.' ),
$provider_id
),
'7.0.0'
);
return null;
}
$registry->setProviderRequestAuthentication(
$provider_id,
new ApiKeyRequestAuthentication( $key )
);
return $registry->isProviderConfigured( $provider_id );
} catch ( Exception $e ) {
wp_trigger_error( __FUNCTION__, $e->getMessage() );
return null;
}
}
/**
* Masks and validates connector API keys in REST responses.
*
* On every `/wp/v2/settings` response, masks connector API key values so raw
* keys are never exposed via the REST API.
*
* On POST or PUT requests, validates each updated key against the provider
* before masking. If validation fails, the key is reverted to an empty string.
*
* @since 7.0.0
* @access private
*
* @param WP_REST_Response $response The response object.
* @param WP_REST_Server $server The server instance.
* @param WP_REST_Request $request The request object.
* @return WP_REST_Response The modified response with masked/validated keys.
*/
function _wp_connectors_rest_settings_dispatch( WP_REST_Response $response, WP_REST_Server $server, WP_REST_Request $request ): WP_REST_Response {
if ( '/wp/v2/settings' !== $request->get_route() ) {
return $response;
}
$data = $response->get_data();
if ( ! is_array( $data ) ) {
return $response;
}
$is_update = 'POST' === $request->get_method() || 'PUT' === $request->get_method();
foreach ( wp_get_connectors() as $connector_id => $connector_data ) {
$auth = $connector_data['authentication'];
if ( 'api_key' !== $auth['method'] || empty( $auth['setting_name'] ) ) {
continue;
}
$setting_name = $auth['setting_name'];
if ( ! array_key_exists( $setting_name, $data ) ) {
continue;
}
$value = $data[ $setting_name ];
// On update, validate AI provider keys before masking.
// Non-AI connectors accept keys as-is; the service plugin handles its own validation.
if ( $is_update && is_string( $value ) && '' !== $value && 'ai_provider' === $connector_data['type'] ) {
if ( true !== _wp_connectors_is_ai_api_key_valid( $value, $connector_id ) ) {
update_option( $setting_name, '' );
$data[ $setting_name ] = '';
continue;
}
}
// Mask the key in the response.
if ( is_string( $value ) && '' !== $value ) {
$data[ $setting_name ] = _wp_connectors_mask_api_key( $value );
}
}
$response->set_data( $data );
return $response;
}
add_filter( 'rest_post_dispatch', '_wp_connectors_rest_settings_dispatch', 10, 3 );
/**
* Registers default connector settings.
*
* @since 7.0.0
* @access private
*/
function _wp_register_default_connector_settings(): void {
$registered_settings = get_registered_settings();
foreach ( wp_get_connectors() as $connector_data ) {
$auth = $connector_data['authentication'];
if ( 'api_key' !== $auth['method'] || empty( $auth['setting_name'] ) ) {
continue;
}
// Skip if the setting is already registered (e.g. by an owning plugin).
if ( isset( $registered_settings[ $auth['setting_name'] ] ) ) {
continue;
}
if ( ! isset( $connector_data['plugin']['is_active'] ) || ! is_callable( $connector_data['plugin']['is_active'] ) ) {
continue;
}
if ( ! call_user_func( $connector_data['plugin']['is_active'] ) ) {
continue;
}
register_setting(
'connectors',
$auth['setting_name'],
array(
'type' => 'string',
'label' => sprintf(
/* translators: %s: Connector name. */
__( '%s API Key' ),
$connector_data['name']
),
'description' => sprintf(
/* translators: %s: Connector name. */
__( 'API key for the %s connector.' ),
$connector_data['name']
),
'default' => '',
'show_in_rest' => true,
'sanitize_callback' => 'sanitize_text_field',
)
);
}
}
add_action( 'init', '_wp_register_default_connector_settings', 20 );
/**
* Passes stored connector API keys to the WP AI client.
*
* @since 7.0.0
* @access private
*/
function _wp_connectors_pass_default_keys_to_ai_client(): void {
try {
$ai_registry = AiClient::defaultRegistry();
foreach ( wp_get_connectors() as $connector_id => $connector_data ) {
if ( 'ai_provider' !== $connector_data['type'] ) {
continue;
}
$auth = $connector_data['authentication'];
if ( 'api_key' !== $auth['method'] || empty( $auth['setting_name'] ) ) {
continue;
}
if ( ! $ai_registry->hasProvider( $connector_id ) ) {
continue;
}
// Skip if the key is already provided via env var or constant.
$key_source = _wp_connectors_get_api_key_source( $auth['setting_name'], $auth['env_var_name'] ?? '', $auth['constant_name'] ?? '' );
if ( 'env' === $key_source || 'constant' === $key_source ) {
continue;
}
$api_key = get_option( $auth['setting_name'], '' );
if ( ! is_string( $api_key ) || '' === $api_key ) {
continue;
}
$ai_registry->setProviderRequestAuthentication(
$connector_id,
new ApiKeyRequestAuthentication( $api_key )
);
}
} catch ( Exception $e ) {
wp_trigger_error( __FUNCTION__, $e->getMessage() );
}
}
add_action( 'init', '_wp_connectors_pass_default_keys_to_ai_client', 20 );
/**
* Exposes connector settings to the connectors-wp-admin script module.
*
* @since 7.0.0
* @access private
*
* @param array<string, mixed> $data Existing script module data.
* @return array<string, mixed> Script module data with connectors added.
*/
function _wp_connectors_get_connector_script_module_data( array $data ): array {
$registry = AiClient::defaultRegistry();
if ( ! function_exists( 'validate_plugin' ) ) {
require_once ABSPATH . 'wp-admin/includes/plugin.php';
}
$connectors = array();
foreach ( wp_get_connectors() as $connector_id => $connector_data ) {
$auth = $connector_data['authentication'];
$auth_out = array( 'method' => $auth['method'] );
if ( 'api_key' === $auth['method'] ) {
$auth_out['settingName'] = $auth['setting_name'] ?? '';
$auth_out['credentialsUrl'] = $auth['credentials_url'] ?? null;
$key_source = _wp_connectors_get_api_key_source( $auth['setting_name'] ?? '', $auth['env_var_name'] ?? '', $auth['constant_name'] ?? '' );
$auth_out['keySource'] = $key_source;
if ( 'ai_provider' === $connector_data['type'] ) {
try {
$auth_out['isConnected'] = $registry->hasProvider( $connector_id ) && $registry->isProviderConfigured( $connector_id );
} catch ( Exception $e ) {
$auth_out['isConnected'] = false;
}
} else {
$auth_out['isConnected'] = 'none' !== $key_source;
}
}
$connector_out = array(
'name' => $connector_data['name'],
'description' => $connector_data['description'],
'logoUrl' => ! empty( $connector_data['logo_url'] ) ? $connector_data['logo_url'] : null,
'type' => $connector_data['type'],
'authentication' => $auth_out,
);
if ( ! empty( $connector_data['plugin']['file'] ) ) {
$file = $connector_data['plugin']['file'];
$is_activated = (bool) call_user_func( $connector_data['plugin']['is_active'] );
$is_installed = $is_activated || 0 === validate_plugin( $file );
$connector_out['plugin'] = array(
'file' => $file,
'isInstalled' => $is_installed,
'isActivated' => $is_activated,
);
}
$connectors[ $connector_id ] = $connector_out;
}
ksort( $connectors );
$data['connectors'] = $connectors;
$data['isFileModDisabled'] = ! wp_is_file_mod_allowed( 'install_plugins' );
return $data;
}
add_filter( 'script_module_data_options-connectors-wp-admin', '_wp_connectors_get_connector_script_module_data' );
Anon7 - 2022
AnonSec Team