class-api-for-cmbird.php
9 months ago
class-api-for-exact-webhooks.php
9 months ago
class-api-for-product-webhook.php
9 months ago
class-api-for-shipping-status.php
9 months ago
class-api-for-woo-order.php
9 months ago
class-api-for-zoho-inventory.php
9 months ago
class-commercebird-list-items-api-controller.php
10 months ago
class-commercebird-media-api-controller.php
10 months ago
class-commercebird-metadata-controller.php
9 months ago
index.php
1 year ago
trait-api-permission.php
9 months ago
trait-api-permission.php
314 lines
| 1 | <?php |
| 2 | |
| 3 | namespace CommerceBird\API; |
| 4 | |
| 5 | use Exception; |
| 6 | // use CommerceBird\Admin\Actions\Ajax\ZohoInventoryAjax; |
| 7 | use CommerceBird\Admin\Actions\Ajax\SettingsAjax; |
| 8 | use WP_Error; |
| 9 | use WP_REST_Request; |
| 10 | use WP_REST_Response; |
| 11 | |
| 12 | if ( ! defined( 'ABSPATH' ) ) { |
| 13 | exit; |
| 14 | } |
| 15 | |
| 16 | trait Api { |
| 17 | |
| 18 | private static string $namespace = 'v2'; |
| 19 | |
| 20 | private string $empty_response = 'No data found from webhook. check on ' . __METHOD__ . ' of ' . __CLASS__ . ' on line ' . __LINE__; |
| 21 | |
| 22 | public static function endpoint(): string { |
| 23 | return get_rest_url() . self::$namespace . '/' . self::$endpoint; |
| 24 | } |
| 25 | |
| 26 | public function permission_check() { |
| 27 | // Get all headers. |
| 28 | $headers = getallheaders(); |
| 29 | // Check if the Authorization header is present. |
| 30 | if ( isset( $headers['Authorization'] ) ) { |
| 31 | $authorization = $headers['Authorization']; |
| 32 | if ( ! password_verify( 'commercebird-zi-webhook-token', $authorization ) ) { |
| 33 | return new WP_Error( |
| 34 | 'rest_forbidden', |
| 35 | 'You are not allowed to access this endpoint', |
| 36 | array( |
| 37 | 'status' => 400, |
| 38 | 'header' => $authorization, |
| 39 | ) |
| 40 | ); |
| 41 | } |
| 42 | } |
| 43 | $subscription = SettingsAjax::instance()->get_subscription_data(); |
| 44 | if ( isset( $subscription['plan'] ) ) { |
| 45 | $subscription_plan = $subscription['plan']; |
| 46 | if ( stripos( $subscription_plan, 'Premium' ) === false ) { |
| 47 | return new WP_Error( |
| 48 | 'rest_forbidden', |
| 49 | $subscription_plan, |
| 50 | array( |
| 51 | 'status' => 403, |
| 52 | 'data' => strpos( 'Premium', $subscription_plan ), |
| 53 | ) |
| 54 | ); |
| 55 | } |
| 56 | return true; |
| 57 | } |
| 58 | } |
| 59 | public function handle( WP_REST_Request $request ) { |
| 60 | // Rate limiting check with queuing support. |
| 61 | $rate_limit_response = $this->check_rate_limit_with_queue(); |
| 62 | if ( is_wp_error( $rate_limit_response ) ) { |
| 63 | $response = new WP_REST_Response(); |
| 64 | $response->set_data( $rate_limit_response->get_error_message() ); |
| 65 | $response->set_status( 429 ); // Too Many Requests. |
| 66 | return rest_ensure_response( $response ); |
| 67 | } |
| 68 | |
| 69 | $response = new WP_REST_Response(); |
| 70 | $response->set_data( $this->empty_response ); |
| 71 | $response->set_status( 404 ); |
| 72 | $data = $request->get_json_params(); |
| 73 | if ( empty( $data ) ) { |
| 74 | return rest_ensure_response( $response ); |
| 75 | } |
| 76 | if ( array_key_exists( 'JSONString', $data ) ) { |
| 77 | $data = str_replace( '\\', '', $data['JSONString'] ); |
| 78 | } |
| 79 | |
| 80 | // Create a unique key based on the payload. |
| 81 | $payload_hash = wp_hash( wp_json_encode( $data ) ); |
| 82 | $lock_key = 'cmbird_processing_payload_' . $payload_hash; |
| 83 | |
| 84 | // Check and set lock using update_option. |
| 85 | $lock_acquired = add_option( $lock_key, time() ); |
| 86 | if ( ! $lock_acquired ) { |
| 87 | $response->set_data( 'Duplicate payload ignored. Already being processed.' ); |
| 88 | $response->set_status( 200 ); |
| 89 | return rest_ensure_response( $response ); |
| 90 | } |
| 91 | |
| 92 | // Process the payload. |
| 93 | if ( ! empty( $data ) ) { |
| 94 | try { |
| 95 | $response = $this->process( $data ); |
| 96 | } catch ( Exception $exception ) { |
| 97 | $response->set_data( $exception->getMessage() ); |
| 98 | $response->set_status( 500 ); |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | // Clean up the lock after processing. |
| 103 | delete_option( $lock_key ); |
| 104 | return rest_ensure_response( $response ); |
| 105 | } |
| 106 | |
| 107 | /** |
| 108 | * Rate limiting with queue support |
| 109 | * Queues requests when limits are reached instead of rejecting immediately |
| 110 | */ |
| 111 | private function check_rate_limit_with_queue() { |
| 112 | $current_time = time(); |
| 113 | $window_size = 60; // 1 minute window. |
| 114 | $max_requests_per_ip = 20; // Reduced per IP limit. |
| 115 | $max_requests_global = 60; // Reduced global limit. |
| 116 | $max_queue_size = 50; // Maximum queued requests. |
| 117 | |
| 118 | // Get client IP. |
| 119 | $client_ip = $this->get_client_ip(); |
| 120 | $ip_key = 'cmbird_rate_limit_ip_' . md5( $client_ip ); |
| 121 | $global_key = 'cmbird_rate_limit_global'; |
| 122 | $queue_key = 'cmbird_request_queue'; |
| 123 | |
| 124 | // Check current queue size. |
| 125 | $current_queue = get_option( $queue_key, array() ); |
| 126 | $current_queue = is_array( $current_queue ) ? $current_queue : array(); |
| 127 | |
| 128 | // Clean expired queue items. |
| 129 | $current_queue = array_filter( |
| 130 | $current_queue, |
| 131 | function ( $item ) use ( $current_time ) { |
| 132 | return ( $current_time - $item['timestamp'] ) < 300; // 5 minute queue expiry. |
| 133 | } |
| 134 | ); |
| 135 | |
| 136 | // Check IP-based rate limit. |
| 137 | $ip_requests = get_transient( $ip_key ); |
| 138 | if ( false === $ip_requests ) { |
| 139 | $ip_requests = array(); |
| 140 | } |
| 141 | |
| 142 | // Clean old requests (outside window). |
| 143 | $ip_requests = array_filter( |
| 144 | $ip_requests, |
| 145 | function ( $timestamp ) use ( $current_time, $window_size ) { |
| 146 | return ( $current_time - $timestamp ) < $window_size; |
| 147 | } |
| 148 | ); |
| 149 | |
| 150 | // Check global rate limit. |
| 151 | $global_requests = get_transient( $global_key ); |
| 152 | if ( false === $global_requests ) { |
| 153 | $global_requests = array(); |
| 154 | } |
| 155 | |
| 156 | // Clean old requests (outside window). |
| 157 | $global_requests = array_filter( |
| 158 | $global_requests, |
| 159 | function ( $timestamp ) use ( $current_time, $window_size ) { |
| 160 | return ( $current_time - $timestamp ) < $window_size; |
| 161 | } |
| 162 | ); |
| 163 | |
| 164 | // Check if limits are exceeded. |
| 165 | $ip_limit_exceeded = count( $ip_requests ) >= $max_requests_per_ip; |
| 166 | $global_limit_exceeded = count( $global_requests ) >= $max_requests_global; |
| 167 | |
| 168 | if ( $ip_limit_exceeded || $global_limit_exceeded ) { |
| 169 | // Try to queue the request if queue isn't full. |
| 170 | if ( count( $current_queue ) < $max_queue_size ) { |
| 171 | $queue_item = array( |
| 172 | 'ip' => $client_ip, |
| 173 | 'timestamp' => $current_time, |
| 174 | 'data' => $_POST, // Store request data. |
| 175 | ); |
| 176 | $current_queue[] = $queue_item; |
| 177 | update_option( $queue_key, $current_queue ); |
| 178 | |
| 179 | // Schedule processing of queue if not already scheduled. |
| 180 | if ( ! wp_next_scheduled( 'cmbird_process_webhook_queue' ) ) { |
| 181 | wp_schedule_single_event( $current_time + 30, 'cmbird_process_webhook_queue' ); |
| 182 | } |
| 183 | |
| 184 | return new WP_Error( |
| 185 | 'request_queued', |
| 186 | 'Request rate limit reached. Your request has been queued and will be processed shortly.', |
| 187 | array( 'status' => 202 ) // Accepted. |
| 188 | ); |
| 189 | } else { |
| 190 | return new WP_Error( |
| 191 | 'queue_full', |
| 192 | 'Rate limit exceeded and queue is full. Please try again later.', |
| 193 | array( 'status' => 503 ) // Service Unavailable. |
| 194 | ); |
| 195 | } |
| 196 | } |
| 197 | |
| 198 | // Add current request to counters. |
| 199 | $ip_requests[] = $current_time; |
| 200 | $global_requests[] = $current_time; |
| 201 | |
| 202 | // Store updated counters with expiration. |
| 203 | set_transient( $ip_key, $ip_requests, $window_size ); |
| 204 | set_transient( $global_key, $global_requests, $window_size ); |
| 205 | |
| 206 | return true; |
| 207 | } |
| 208 | |
| 209 | /** |
| 210 | * Rate limiting implementation |
| 211 | * Limits requests per IP and globally |
| 212 | */ |
| 213 | private function check_rate_limit() { |
| 214 | $current_time = time(); |
| 215 | $window_size = 60; // 1 minute window. |
| 216 | $max_requests_per_ip = 30; // Per IP limit. |
| 217 | $max_requests_global = 100; // Global limit. |
| 218 | |
| 219 | // Get client IP. |
| 220 | $client_ip = $this->get_client_ip(); |
| 221 | $ip_key = 'cmbird_rate_limit_ip_' . md5( $client_ip ); |
| 222 | $global_key = 'cmbird_rate_limit_global'; |
| 223 | |
| 224 | // Check IP-based rate limit. |
| 225 | $ip_requests = get_transient( $ip_key ); |
| 226 | if ( false === $ip_requests ) { |
| 227 | $ip_requests = array(); |
| 228 | } |
| 229 | |
| 230 | // Clean old requests (outside window). |
| 231 | $ip_requests = array_filter( |
| 232 | $ip_requests, |
| 233 | function ( $timestamp ) use ( $current_time, $window_size ) { |
| 234 | return ( $current_time - $timestamp ) < $window_size; |
| 235 | } |
| 236 | ); |
| 237 | |
| 238 | // Check if IP limit exceeded. |
| 239 | if ( count( $ip_requests ) >= $max_requests_per_ip ) { |
| 240 | return new WP_Error( |
| 241 | 'rate_limit_exceeded', |
| 242 | 'Rate limit exceeded for this IP. Maximum ' . $max_requests_per_ip . ' requests per minute allowed.', |
| 243 | array( 'status' => 429 ) |
| 244 | ); |
| 245 | } |
| 246 | |
| 247 | // Check global rate limit. |
| 248 | $global_requests = get_transient( $global_key ); |
| 249 | if ( false === $global_requests ) { |
| 250 | $global_requests = array(); |
| 251 | } |
| 252 | |
| 253 | // Clean old requests (outside window). |
| 254 | $global_requests = array_filter( |
| 255 | $global_requests, |
| 256 | function ( $timestamp ) use ( $current_time, $window_size ) { |
| 257 | return ( $current_time - $timestamp ) < $window_size; |
| 258 | } |
| 259 | ); |
| 260 | |
| 261 | // Check if global limit exceeded. |
| 262 | if ( count( $global_requests ) >= $max_requests_global ) { |
| 263 | return new WP_Error( |
| 264 | 'global_rate_limit_exceeded', |
| 265 | 'Global rate limit exceeded. Maximum ' . $max_requests_global . ' requests per minute allowed.', |
| 266 | array( 'status' => 429 ) |
| 267 | ); |
| 268 | } |
| 269 | |
| 270 | // Add current request to counters. |
| 271 | $ip_requests[] = $current_time; |
| 272 | $global_requests[] = $current_time; |
| 273 | |
| 274 | // Store updated counters with expiration. |
| 275 | set_transient( $ip_key, $ip_requests, $window_size ); |
| 276 | set_transient( $global_key, $global_requests, $window_size ); |
| 277 | |
| 278 | return true; |
| 279 | } |
| 280 | |
| 281 | /** |
| 282 | * Get client IP address safely |
| 283 | */ |
| 284 | private function get_client_ip() { |
| 285 | // Check for various headers that might contain the real IP. |
| 286 | $ip_headers = array( |
| 287 | 'HTTP_X_FORWARDED_FOR', |
| 288 | 'HTTP_X_REAL_IP', |
| 289 | 'HTTP_CLIENT_IP', |
| 290 | 'HTTP_X_FORWARDED', |
| 291 | 'HTTP_FORWARDED_FOR', |
| 292 | 'HTTP_FORWARDED', |
| 293 | 'REMOTE_ADDR', |
| 294 | ); |
| 295 | |
| 296 | foreach ( $ip_headers as $header ) { |
| 297 | if ( ! empty( $_SERVER[ $header ] ) ) { |
| 298 | $ip = $_SERVER[ $header ]; |
| 299 | // Handle comma-separated IPs (X-Forwarded-For). |
| 300 | if ( strpos( $ip, ',' ) !== false ) { |
| 301 | $ip = trim( explode( ',', $ip )[0] ); |
| 302 | } |
| 303 | // Validate IP. |
| 304 | if ( filter_var( $ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE ) ) { |
| 305 | return $ip; |
| 306 | } |
| 307 | } |
| 308 | } |
| 309 | |
| 310 | // Fallback to REMOTE_ADDR. |
| 311 | return $_SERVER['REMOTE_ADDR'] ?? 'unknown'; |
| 312 | } |
| 313 | } |
| 314 |