| 1 |
<?php |
| 2 |
/** |
| 3 |
* Agent Execution Service |
| 4 |
* |
| 5 |
* Executes whitelisted WordPress REST API routes internally |
| 6 |
* without making external HTTP requests. |
| 7 |
* |
| 8 |
* @package AI_Builder |
| 9 |
*/ |
| 10 |
|
| 11 |
if (!defined('ABSPATH')) { |
| 12 |
exit; |
| 13 |
} |
| 14 |
|
| 15 |
class AIBUI_Agent_Execution_Service |
| 16 |
{ |
| 17 |
/** |
| 18 |
* Security service instance |
| 19 |
* |
| 20 |
* @var AIBUI_Agent_Security_Service |
| 21 |
*/ |
| 22 |
private $security; |
| 23 |
|
| 24 |
/** |
| 25 |
* Discovery service instance |
| 26 |
* |
| 27 |
* @var AIBUI_Agent_Discovery_Service |
| 28 |
*/ |
| 29 |
private $discovery; |
| 30 |
|
| 31 |
/** |
| 32 |
* Execution log for debugging |
| 33 |
* |
| 34 |
* @var array |
| 35 |
*/ |
| 36 |
private $execution_log = array(); |
| 37 |
|
| 38 |
/** |
| 39 |
* Maximum executions per request (prevent infinite loops) |
| 40 |
*/ |
| 41 |
const MAX_EXECUTIONS = 20; |
| 42 |
|
| 43 |
/** |
| 44 |
* Current execution count |
| 45 |
* |
| 46 |
* @var int |
| 47 |
*/ |
| 48 |
private $execution_count = 0; |
| 49 |
|
| 50 |
/** |
| 51 |
* Constructor |
| 52 |
* |
| 53 |
* @param AIBUI_Agent_Security_Service $security |
| 54 |
* @param AIBUI_Agent_Discovery_Service $discovery |
| 55 |
*/ |
| 56 |
public function __construct( |
| 57 |
AIBUI_Agent_Security_Service $security, |
| 58 |
AIBUI_Agent_Discovery_Service $discovery |
| 59 |
) { |
| 60 |
$this->security = $security; |
| 61 |
$this->discovery = $discovery; |
| 62 |
} |
| 63 |
|
| 64 |
/** |
| 65 |
* Execute a tool call from the AI |
| 66 |
* |
| 67 |
* @param string $tool_name Name of the tool (generated from route) |
| 68 |
* @param array $params Parameters for the tool |
| 69 |
* @return array Result with 'success', 'data' or 'error' |
| 70 |
*/ |
| 71 |
public function execute_tool($tool_name, array $params = array()) |
| 72 |
{ |
| 73 |
// Check execution limit |
| 74 |
if ($this->execution_count >= self::MAX_EXECUTIONS) { |
| 75 |
return $this->error_response( |
| 76 |
'EXECUTION_LIMIT_REACHED', |
| 77 |
'Maximum number of tool executions reached in this request' |
| 78 |
); |
| 79 |
} |
| 80 |
$this->execution_count++; |
| 81 |
|
| 82 |
// Validate the tool exists and is whitelisted |
| 83 |
$route_meta = $this->security->validate_tool($tool_name); |
| 84 |
|
| 85 |
if (!$route_meta) { |
| 86 |
return $this->error_response( |
| 87 |
'TOOL_NOT_ALLOWED', |
| 88 |
"Tool '{$tool_name}' is not available or not whitelisted" |
| 89 |
); |
| 90 |
} |
| 91 |
|
| 92 |
$route = $route_meta['route']; |
| 93 |
$method = $route_meta['method']; |
| 94 |
|
| 95 |
// Log execution attempt |
| 96 |
$this->log_execution('attempt', $tool_name, array( |
| 97 |
'route' => $route, |
| 98 |
'method' => $method, |
| 99 |
'params' => $params, |
| 100 |
)); |
| 101 |
|
| 102 |
// Execute the route |
| 103 |
return $this->execute_route($route, $method, $params); |
| 104 |
} |
| 105 |
|
| 106 |
/** |
| 107 |
* Execute a REST API route internally |
| 108 |
* |
| 109 |
* @param string $route Route path |
| 110 |
* @param string $method HTTP method |
| 111 |
* @param array $params Parameters |
| 112 |
* @return array Result |
| 113 |
*/ |
| 114 |
public function execute_route($route, $method, array $params = array()) |
| 115 |
{ |
| 116 |
// Security check 1: Is route whitelisted? |
| 117 |
if (!$this->security->is_route_whitelisted($route, $method)) { |
| 118 |
// Try to match parameterized route |
| 119 |
$matched_route = $this->match_parameterized_route($route, $method); |
| 120 |
if (!$matched_route || !$this->security->is_route_whitelisted($matched_route, $method)) { |
| 121 |
return $this->error_response( |
| 122 |
'ROUTE_NOT_WHITELISTED', |
| 123 |
"Route '{$method} {$route}' is not whitelisted for AI agent access" |
| 124 |
); |
| 125 |
} |
| 126 |
} |
| 127 |
|
| 128 |
// Security check 2: Is route forbidden for this HTTP method? |
| 129 |
if ($this->discovery->is_forbidden_route($route, $method)) { |
| 130 |
return $this->error_response( |
| 131 |
'ROUTE_FORBIDDEN', |
| 132 |
"Route '{$route}' is forbidden for security reasons" |
| 133 |
); |
| 134 |
} |
| 135 |
|
| 136 |
// Build the request |
| 137 |
$request = $this->build_request($route, $method, $params); |
| 138 |
|
| 139 |
// Execute via REST API |
| 140 |
try { |
| 141 |
$response = rest_do_request($request); |
| 142 |
return $this->process_response($response); |
| 143 |
} catch (Exception $e) { |
| 144 |
$this->log_execution('error', $route, array( |
| 145 |
'method' => $method, |
| 146 |
'error' => $e->getMessage(), |
| 147 |
)); |
| 148 |
|
| 149 |
return $this->error_response( |
| 150 |
'EXECUTION_FAILED', |
| 151 |
'Failed to execute request: ' . $e->getMessage() |
| 152 |
); |
| 153 |
} |
| 154 |
} |
| 155 |
|
| 156 |
/** |
| 157 |
* Build a WP_REST_Request object |
| 158 |
* |
| 159 |
* @param string $route Route path |
| 160 |
* @param string $method HTTP method |
| 161 |
* @param array $params Parameters |
| 162 |
* @return WP_REST_Request |
| 163 |
*/ |
| 164 |
private function build_request($route, $method, array $params) |
| 165 |
{ |
| 166 |
$request = new WP_REST_Request($method, $route); |
| 167 |
|
| 168 |
// Separate URL params from body params |
| 169 |
$url_params = array(); |
| 170 |
$body_params = array(); |
| 171 |
|
| 172 |
// Extract URL parameters from route pattern |
| 173 |
$url_param_names = $this->extract_url_param_names($route); |
| 174 |
|
| 175 |
foreach ($params as $key => $value) { |
| 176 |
if (in_array($key, $url_param_names)) { |
| 177 |
$url_params[$key] = $value; |
| 178 |
} else { |
| 179 |
$body_params[$key] = $value; |
| 180 |
} |
| 181 |
} |
| 182 |
|
| 183 |
// Set URL parameters |
| 184 |
foreach ($url_params as $key => $value) { |
| 185 |
$request->set_url_params(array($key => $value)); |
| 186 |
} |
| 187 |
|
| 188 |
// Set query or body parameters based on method |
| 189 |
if (in_array($method, array('GET', 'HEAD', 'DELETE'))) { |
| 190 |
$request->set_query_params($body_params); |
| 191 |
} else { |
| 192 |
$request->set_body_params($body_params); |
| 193 |
} |
| 194 |
|
| 195 |
// Set content type for POST/PUT/PATCH |
| 196 |
if (in_array($method, array('POST', 'PUT', 'PATCH'))) { |
| 197 |
$request->set_header('Content-Type', 'application/json'); |
| 198 |
} |
| 199 |
|
| 200 |
return $request; |
| 201 |
} |
| 202 |
|
| 203 |
/** |
| 204 |
* Extract URL parameter names from route pattern |
| 205 |
* |
| 206 |
* @param string $route |
| 207 |
* @return array |
| 208 |
*/ |
| 209 |
private function extract_url_param_names($route) |
| 210 |
{ |
| 211 |
$names = array(); |
| 212 |
if (preg_match_all('/\(\?P<([^>]+)>[^)]+\)/', $route, $matches)) { |
| 213 |
$names = $matches[1]; |
| 214 |
} |
| 215 |
return $names; |
| 216 |
} |
| 217 |
|
| 218 |
/** |
| 219 |
* Match a concrete path to a parameterized route pattern |
| 220 |
* |
| 221 |
* @param string $path Concrete path (e.g., /wp/v2/posts/123) |
| 222 |
* @param string $method HTTP method |
| 223 |
* @return string|null Matched route pattern or null |
| 224 |
*/ |
| 225 |
private function match_parameterized_route($path, $method) |
| 226 |
{ |
| 227 |
$routes = $this->security->get_enabled_routes(); |
| 228 |
|
| 229 |
foreach ($routes as $route) { |
| 230 |
if ($route['method'] !== strtoupper($method)) { |
| 231 |
continue; |
| 232 |
} |
| 233 |
|
| 234 |
// Convert route pattern to regex for matching |
| 235 |
$pattern = '#^' . $route['route'] . '$#'; |
| 236 |
if (preg_match($pattern, $path)) { |
| 237 |
return $route['route']; |
| 238 |
} |
| 239 |
} |
| 240 |
|
| 241 |
return null; |
| 242 |
} |
| 243 |
|
| 244 |
/** |
| 245 |
* Process the REST API response |
| 246 |
* |
| 247 |
* @param WP_REST_Response $response |
| 248 |
* @return array |
| 249 |
*/ |
| 250 |
private function process_response($response) |
| 251 |
{ |
| 252 |
$data = $response->get_data(); |
| 253 |
$status = $response->get_status(); |
| 254 |
$headers = $response->get_headers(); |
| 255 |
|
| 256 |
// Check for errors |
| 257 |
if ($status >= 400) { |
| 258 |
$error_message = 'Request failed'; |
| 259 |
$error_code = 'REQUEST_FAILED'; |
| 260 |
|
| 261 |
if (is_wp_error($data)) { |
| 262 |
$error_message = $data->get_error_message(); |
| 263 |
$error_code = $data->get_error_code(); |
| 264 |
} elseif (isset($data['message'])) { |
| 265 |
$error_message = $data['message']; |
| 266 |
$error_code = isset($data['code']) ? $data['code'] : 'API_ERROR'; |
| 267 |
} |
| 268 |
|
| 269 |
$this->log_execution('api_error', 'response', array( |
| 270 |
'status' => $status, |
| 271 |
'error' => $error_message, |
| 272 |
)); |
| 273 |
|
| 274 |
return array( |
| 275 |
'success' => false, |
| 276 |
'error' => array( |
| 277 |
'code' => $error_code, |
| 278 |
'message' => $error_message, |
| 279 |
'status' => $status, |
| 280 |
), |
| 281 |
); |
| 282 |
} |
| 283 |
|
| 284 |
// Log success |
| 285 |
$this->log_execution('success', 'response', array( |
| 286 |
'status' => $status, |
| 287 |
'data_type' => gettype($data), |
| 288 |
)); |
| 289 |
|
| 290 |
// Truncate large responses for AI context |
| 291 |
$processed_data = $this->truncate_response_data($data); |
| 292 |
|
| 293 |
return array( |
| 294 |
'success' => true, |
| 295 |
'data' => $processed_data, |
| 296 |
'meta' => array( |
| 297 |
'status' => $status, |
| 298 |
'total_results' => $this->count_results($data), |
| 299 |
), |
| 300 |
); |
| 301 |
} |
| 302 |
|
| 303 |
/** |
| 304 |
* Truncate large response data to prevent token overflow |
| 305 |
* |
| 306 |
* @param mixed $data |
| 307 |
* @param int $max_items Maximum items in arrays |
| 308 |
* @return mixed |
| 309 |
*/ |
| 310 |
private function truncate_response_data($data, $max_items = 10) |
| 311 |
{ |
| 312 |
if (is_array($data)) { |
| 313 |
// Check if it's a list of items |
| 314 |
if (isset($data[0]) && is_array($data[0])) { |
| 315 |
$total = count($data); |
| 316 |
$data = array_slice($data, 0, $max_items); |
| 317 |
|
| 318 |
// Add truncation notice |
| 319 |
if ($total > $max_items) { |
| 320 |
$data[] = array( |
| 321 |
'_truncated' => true, |
| 322 |
'_message' => sprintf('Showing %d of %d total results', $max_items, $total), |
| 323 |
); |
| 324 |
} |
| 325 |
} |
| 326 |
|
| 327 |
// Recursively process nested arrays |
| 328 |
foreach ($data as $key => $value) { |
| 329 |
if (is_array($value)) { |
| 330 |
// Remove potentially large/unnecessary fields |
| 331 |
$fields_to_remove = array( |
| 332 |
'content', 'rendered', 'raw', 'guid', '_links', |
| 333 |
'yoast_head', 'yoast_head_json', |
| 334 |
); |
| 335 |
|
| 336 |
foreach ($fields_to_remove as $field) { |
| 337 |
if (isset($value[$field]) && is_string($value[$field]) && strlen($value[$field]) > 500) { |
| 338 |
$value[$field] = substr($value[$field], 0, 500) . '... [truncated]'; |
| 339 |
} |
| 340 |
} |
| 341 |
|
| 342 |
$data[$key] = $value; |
| 343 |
} |
| 344 |
} |
| 345 |
} |
| 346 |
|
| 347 |
return $data; |
| 348 |
} |
| 349 |
|
| 350 |
/** |
| 351 |
* Count results in response data |
| 352 |
* |
| 353 |
* @param mixed $data |
| 354 |
* @return int|null |
| 355 |
*/ |
| 356 |
private function count_results($data) |
| 357 |
{ |
| 358 |
if (is_array($data) && isset($data[0])) { |
| 359 |
return count($data); |
| 360 |
} |
| 361 |
return null; |
| 362 |
} |
| 363 |
|
| 364 |
/** |
| 365 |
* Create error response |
| 366 |
* |
| 367 |
* @param string $code |
| 368 |
* @param string $message |
| 369 |
* @return array |
| 370 |
*/ |
| 371 |
private function error_response($code, $message) |
| 372 |
{ |
| 373 |
return array( |
| 374 |
'success' => false, |
| 375 |
'error' => array( |
| 376 |
'code' => $code, |
| 377 |
'message' => $message, |
| 378 |
), |
| 379 |
); |
| 380 |
} |
| 381 |
|
| 382 |
/** |
| 383 |
* Log execution for debugging |
| 384 |
* |
| 385 |
* @param string $type |
| 386 |
* @param string $context |
| 387 |
* @param array $data |
| 388 |
*/ |
| 389 |
private function log_execution($type, $context, array $data = array()) |
| 390 |
{ |
| 391 |
$this->execution_log[] = array( |
| 392 |
'type' => $type, |
| 393 |
'context' => $context, |
| 394 |
'data' => $data, |
| 395 |
'timestamp' => microtime(true), |
| 396 |
); |
| 397 |
} |
| 398 |
|
| 399 |
/** |
| 400 |
* Get execution log |
| 401 |
* |
| 402 |
* @return array |
| 403 |
*/ |
| 404 |
public function get_execution_log() |
| 405 |
{ |
| 406 |
return $this->execution_log; |
| 407 |
} |
| 408 |
|
| 409 |
/** |
| 410 |
* Reset execution counter (for new request) |
| 411 |
*/ |
| 412 |
public function reset_execution_count() |
| 413 |
{ |
| 414 |
$this->execution_count = 0; |
| 415 |
$this->execution_log = array(); |
| 416 |
} |
| 417 |
|
| 418 |
/** |
| 419 |
* Get current execution count |
| 420 |
* |
| 421 |
* @return int |
| 422 |
*/ |
| 423 |
public function get_execution_count() |
| 424 |
{ |
| 425 |
return $this->execution_count; |
| 426 |
} |
| 427 |
|
| 428 |
/** |
| 429 |
* Execute multiple tool calls in sequence |
| 430 |
* |
| 431 |
* @param array $tool_calls Array of ['tool_name' => ..., 'params' => ...] |
| 432 |
* @return array Results for each tool call |
| 433 |
*/ |
| 434 |
public function execute_tool_calls(array $tool_calls) |
| 435 |
{ |
| 436 |
$results = array(); |
| 437 |
|
| 438 |
foreach ($tool_calls as $index => $call) { |
| 439 |
if (!isset($call['tool_name'])) { |
| 440 |
$results[$index] = $this->error_response( |
| 441 |
'INVALID_TOOL_CALL', |
| 442 |
'Tool call missing tool_name' |
| 443 |
); |
| 444 |
continue; |
| 445 |
} |
| 446 |
|
| 447 |
$params = isset($call['params']) ? $call['params'] : array(); |
| 448 |
$results[$index] = $this->execute_tool($call['tool_name'], $params); |
| 449 |
} |
| 450 |
|
| 451 |
return $results; |
| 452 |
} |
| 453 |
} |
| 454 |
|
| 455 |
|
