Code Coverage |
||||||||||
Lines |
Functions and Methods |
Classes and Traits |
||||||||
| Total | |
56.74% |
80 / 141 |
|
38.46% |
5 / 13 |
CRAP | |
0.00% |
0 / 1 |
| Firewall | |
57.55% |
80 / 139 |
|
38.46% |
5 / 13 |
277.00 | |
0.00% |
0 / 1 |
| get_key | |
0.00% |
0 / 1 |
|
0.00% |
0 / 1 |
2 | |||
| get_state | |
0.00% |
0 / 12 |
|
0.00% |
0 / 1 |
6 | |||
| register_routes | |
0.00% |
0 / 18 |
|
0.00% |
0 / 1 |
2 | |||
| start_test | |
0.00% |
0 / 14 |
|
0.00% |
0 / 1 |
12 | |||
| get_blocks | |
100.00% |
10 / 10 |
|
100.00% |
1 / 1 |
3 | |||
| get_daily_blocks | |
73.33% |
11 / 15 |
|
0.00% |
0 / 1 |
7.93 | |||
| get_test_summary | |
100.00% |
12 / 12 |
|
100.00% |
1 / 1 |
10 | |||
| get_rules_updated_at | |
100.00% |
4 / 4 |
|
100.00% |
1 / 1 |
4 | |||
| get_current_ip | |
91.67% |
11 / 12 |
|
0.00% |
0 / 1 |
7.03 | |||
| validate_ip_block_list | |
100.00% |
22 / 22 |
|
100.00% |
1 / 1 |
6 | |||
| ip_list_covers | |
100.00% |
8 / 8 |
|
100.00% |
1 / 1 |
5 | |||
| get_ip_rules | |
0.00% |
0 / 8 |
|
0.00% |
0 / 1 |
6 | |||
| add_request_details | n/a |
0 / 0 |
n/a |
0 / 0 |
1 | |||||
| get_recent_blocks | |
66.67% |
2 / 3 |
|
0.00% |
0 / 1 |
2.15 | |||
| 1 | <?php |
| 2 | /** |
| 3 | * Protect dashboard: the Firewall section. |
| 4 | * |
| 5 | * @package automattic/jetpack-protect |
| 6 | */ |
| 7 | |
| 8 | namespace Automattic\Jetpack\Protect\Sections; |
| 9 | |
| 10 | use Automattic\Jetpack\IP\Utils as IP_Utils; |
| 11 | use Automattic\Jetpack\Protect\Dashboard; |
| 12 | use Automattic\Jetpack\Protect\Dashboard_Section; |
| 13 | use Automattic\Jetpack\Waf\Waf_Blocklog_Manager; |
| 14 | use Automattic\Jetpack\Waf\Waf_Request; |
| 15 | use Automattic\Jetpack\Waf\Waf_Rules_Manager; |
| 16 | use Automattic\Jetpack\Waf\Waf_Runner; |
| 17 | use Automattic\Jetpack\Waf\Waf_Self_Check; |
| 18 | use Automattic\Jetpack\Waf\Waf_Stats; |
| 19 | use WP_Error; |
| 20 | use WP_REST_Server; |
| 21 | |
| 22 | if ( ! defined( 'ABSPATH' ) ) { |
| 23 | exit( 0 ); |
| 24 | } |
| 25 | |
| 26 | /** |
| 27 | * The firewall's on/off state, blocked requests, IP lists and a one-time request to test it with. |
| 28 | * |
| 29 | * @since 0.2.0 |
| 30 | */ |
| 31 | class Firewall implements Dashboard_Section { |
| 32 | |
| 33 | /** |
| 34 | * Headers a proxy names the visitor in. One that disagrees with the firewall's address means that address is the proxy's. |
| 35 | */ |
| 36 | const FORWARDING_HEADERS = array( |
| 37 | 'HTTP_X_FORWARDED_FOR', |
| 38 | 'HTTP_X_REAL_IP', |
| 39 | 'HTTP_CF_CONNECTING_IP', |
| 40 | 'HTTP_TRUE_CLIENT_IP', |
| 41 | 'HTTP_CLIENT_IP', |
| 42 | ); |
| 43 | |
| 44 | /** |
| 45 | * The key the section's state is printed under. |
| 46 | * |
| 47 | * @return string |
| 48 | */ |
| 49 | public function get_key() { |
| 50 | return 'firewall'; |
| 51 | } |
| 52 | |
| 53 | /** |
| 54 | * The firewall module's state, its blocked requests and whether a Scan plan is active. |
| 55 | * |
| 56 | * @return array |
| 57 | */ |
| 58 | public function get_state() { |
| 59 | // The block counts persist while the firewall is off, so they are sent either way. |
| 60 | return array_merge( |
| 61 | Dashboard::get_module_state( 'waf' ), |
| 62 | self::get_blocks(), |
| 63 | array( |
| 64 | 'hasScan' => Dashboard::has_scan_plan(), |
| 65 | 'upgradeUrl' => Dashboard::get_scan_upgrade_url(), |
| 66 | 'currentIp' => self::get_current_ip(), |
| 67 | 'ipRules' => self::get_ip_rules(), |
| 68 | 'rulesUpdatedAt' => self::get_rules_updated_at(), |
| 69 | 'providedByHost' => method_exists( Waf_Runner::class, 'is_provided_by_host' ) && Waf_Runner::is_provided_by_host(), |
| 70 | ) |
| 71 | ); |
| 72 | } |
| 73 | |
| 74 | /** |
| 75 | * Register `jetpack/v4/protect-dashboard/firewall/test` and `…/firewall/blocks`. |
| 76 | * |
| 77 | * The firewall's settings are saved through existing endpoints. |
| 78 | * |
| 79 | * @return void |
| 80 | */ |
| 81 | public function register_routes() { |
| 82 | register_rest_route( |
| 83 | 'jetpack/v4', |
| 84 | '/protect-dashboard/firewall/test', |
| 85 | array( |
| 86 | 'methods' => WP_REST_Server::CREATABLE, |
| 87 | 'callback' => array( __CLASS__, 'start_test' ), |
| 88 | 'permission_callback' => array( Dashboard::class, 'can_manage' ), |
| 89 | ) |
| 90 | ); |
| 91 | |
| 92 | register_rest_route( |
| 93 | 'jetpack/v4', |
| 94 | '/protect-dashboard/firewall/blocks', |
| 95 | array( |
| 96 | 'methods' => WP_REST_Server::READABLE, |
| 97 | 'callback' => array( __CLASS__, 'get_blocks' ), |
| 98 | 'permission_callback' => array( Dashboard::class, 'can_manage' ), |
| 99 | ) |
| 100 | ); |
| 101 | } |
| 102 | |
| 103 | /** |
| 104 | * A one-time URL the firewall blocks, for the browser to request. |
| 105 | * |
| 106 | * @return array|WP_Error |
| 107 | */ |
| 108 | public static function start_test() { |
| 109 | // The WAF package bundled by another plugin can predate the self-check. |
| 110 | if ( ! class_exists( Waf_Self_Check::class ) ) { |
| 111 | return new WP_Error( |
| 112 | 'firewall_test_unavailable', |
| 113 | __( 'Update Jetpack to test the firewall.', 'jetpack-protect-pkg' ), |
| 114 | array( 'status' => 501 ) |
| 115 | ); |
| 116 | } |
| 117 | |
| 118 | $token = Waf_Self_Check::create_token(); |
| 119 | if ( ! $token ) { |
| 120 | return new WP_Error( |
| 121 | 'firewall_test_failed', |
| 122 | __( 'The firewall test couldn’t start.', 'jetpack-protect-pkg' ), |
| 123 | array( 'status' => 500 ) |
| 124 | ); |
| 125 | } |
| 126 | |
| 127 | return array( 'url' => add_query_arg( Waf_Self_Check::QUERY_PARAM, $token, home_url( '/' ) ) ); |
| 128 | } |
| 129 | |
| 130 | /** |
| 131 | * The recent blocks and the block counts, refreshed after a test. |
| 132 | * |
| 133 | * The last 30 days are UTC days, as the firewall records them. |
| 134 | * |
| 135 | * @return array |
| 136 | */ |
| 137 | public static function get_blocks() { |
| 138 | $daily = self::get_daily_blocks(); |
| 139 | $all = method_exists( Waf_Blocklog_Manager::class, 'get_all_time_block_count' ) ? Waf_Blocklog_Manager::get_all_time_block_count() : null; |
| 140 | |
| 141 | return array_merge( |
| 142 | array( |
| 143 | 'recentBlocks' => self::get_recent_blocks(), |
| 144 | 'blockedCount' => $all, |
| 145 | // Not `Waf_Stats`' `thirty_days`, which spans 31 dates. |
| 146 | 'blockedLast30Days' => $daily ? array_sum( array_column( $daily, 'count' ) ) : null, |
| 147 | ), |
| 148 | self::get_test_summary() |
| 149 | ); |
| 150 | } |
| 151 | |
| 152 | /** |
| 153 | * Blocked requests on each of the last 30 UTC days, oldest first, with 0 for a day without any. |
| 154 | * |
| 155 | * @return array<int, array{date: string, count: int}> Empty when the WAF package isn't loaded. |
| 156 | */ |
| 157 | private static function get_daily_blocks() { |
| 158 | if ( ! class_exists( Waf_Blocklog_Manager::class ) ) { |
| 159 | return array(); |
| 160 | } |
| 161 | |
| 162 | if ( method_exists( Waf_Blocklog_Manager::class, 'get_daily_block_counts' ) ) { |
| 163 | $counts = Waf_Blocklog_Manager::get_daily_block_counts(); |
| 164 | } else { |
| 165 | // An older WAF package: read it uncached, as `Waf_Blocklog_Manager::get_stored_option()` does. |
| 166 | global $wpdb; |
| 167 | // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching |
| 168 | $stored = $wpdb->get_var( $wpdb->prepare( "SELECT option_value FROM {$wpdb->base_prefix}options WHERE option_name = %s", Waf_Blocklog_Manager::BLOCKLOG_OPTION_NAME_DAILY_SUMMARY ) ); |
| 169 | $counts = null === $stored ? array() : maybe_unserialize( $stored ); |
| 170 | $counts = is_array( $counts ) ? $counts : array(); |
| 171 | } |
| 172 | |
| 173 | $days = array(); |
| 174 | for ( $ago = 29; $ago >= 0; $ago-- ) { |
| 175 | $date = gmdate( 'Y-m-d', strtotime( "-$ago days" ) ); |
| 176 | $days[] = array( |
| 177 | 'date' => $date, |
| 178 | 'count' => isset( $counts[ $date ] ) ? (int) $counts[ $date ] : 0, |
| 179 | ); |
| 180 | } |
| 181 | |
| 182 | return $days; |
| 183 | } |
| 184 | |
| 185 | /** |
| 186 | * Whether the firewall has blocked anything besides its own tests, and when it was last tested. |
| 187 | * |
| 188 | * The log covers blocks from before the firewall recorded whether any weren't tests, until they're pruned. |
| 189 | * |
| 190 | * @return array{hasBlocked: bool, lastTestAt: string|null} |
| 191 | */ |
| 192 | private static function get_test_summary() { |
| 193 | global $wpdb; |
| 194 | |
| 195 | // An older WAF package doesn't define the class. |
| 196 | $test_rule = class_exists( Waf_Self_Check::class ) ? Waf_Self_Check::RULE_ID : -2; |
| 197 | |
| 198 | // The table doesn't exist until the firewall is first turned on. |
| 199 | $suppress = $wpdb->suppress_errors(); |
| 200 | // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching -- A custom table. |
| 201 | $row = $wpdb->get_row( $wpdb->prepare( "SELECT COUNT(*) AS total, SUM(rule_id = %d) AS tests, MAX(CASE WHEN rule_id = %d THEN timestamp END) AS last_test FROM {$wpdb->base_prefix}jetpack_waf_blocklog", $test_rule, $test_rule ) ); |
| 202 | $wpdb->suppress_errors( $suppress ); |
| 203 | |
| 204 | $total = $row ? (int) $row->total : 0; |
| 205 | $tests = $row ? (int) $row->tests : 0; |
| 206 | $recorded = method_exists( Waf_Blocklog_Manager::class, 'has_blocked_requests' ) && Waf_Blocklog_Manager::has_blocked_requests(); |
| 207 | |
| 208 | // Silent mode logs requests without blocking them, so its log rows aren't blocks. |
| 209 | $is_silent = class_exists( Waf_Runner::class ) && 'silent' === get_option( Waf_Runner::MODE_OPTION_NAME ); |
| 210 | |
| 211 | return array( |
| 212 | 'hasBlocked' => $recorded || ( ! $is_silent && $total > $tests ), |
| 213 | 'lastTestAt' => $row && $row->last_test ? gmdate( 'Y-m-d\TH:i:s\Z', strtotime( $row->last_test . ' UTC' ) ) : null, |
| 214 | ); |
| 215 | } |
| 216 | |
| 217 | /** |
| 218 | * When the automatic rules were last downloaded, as a Unix timestamp, or null while they're off or never were. |
| 219 | * |
| 220 | * @return int|null |
| 221 | */ |
| 222 | public static function get_rules_updated_at() { |
| 223 | if ( ! class_exists( Waf_Stats::class ) || ! Waf_Rules_Manager::automatic_rules_enabled() ) { |
| 224 | return null; |
| 225 | } |
| 226 | |
| 227 | $timestamp = (int) Waf_Stats::get_automatic_rules_last_updated(); |
| 228 | |
| 229 | return $timestamp > 0 ? $timestamp : null; |
| 230 | } |
| 231 | |
| 232 | /** |
| 233 | * The visitor's IP address as the firewall sees it, to offer on the allow list and keep off the block list. |
| 234 | * |
| 235 | * Empty when it may be a proxy's: allowing that address would let every visitor behind the proxy past the rules. |
| 236 | * |
| 237 | * @return string |
| 238 | */ |
| 239 | public static function get_current_ip() { |
| 240 | if ( ! class_exists( Waf_Request::class ) ) { |
| 241 | return ''; |
| 242 | } |
| 243 | |
| 244 | $ip = (string) ( new Waf_Request() )->get_real_user_ip_address(); |
| 245 | if ( ! filter_var( $ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE ) ) { |
| 246 | return ''; |
| 247 | } |
| 248 | |
| 249 | foreach ( self::FORWARDING_HEADERS as $header ) { |
| 250 | if ( empty( $_SERVER[ $header ] ) ) { |
| 251 | continue; |
| 252 | } |
| 253 | |
| 254 | $forwarded = trim( explode( ',', wp_unslash( $_SERVER[ $header ] ) )[0] ); // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized -- Validated as an IP address below. |
| 255 | if ( ! filter_var( $forwarded, FILTER_VALIDATE_IP ) || inet_pton( $forwarded ) !== inet_pton( $ip ) ) { |
| 256 | return ''; |
| 257 | } |
| 258 | } |
| 259 | |
| 260 | return $ip; |
| 261 | } |
| 262 | |
| 263 | /** |
| 264 | * Refuse a block list that covers the visitor's own address, which would lock them out of the site. |
| 265 | * |
| 266 | * A list is allowed when the address is unknown, so a wrong guess can't stop a legitimate save. |
| 267 | * |
| 268 | * @param string $list The block list being saved: addresses, ranges or CIDR blocks. |
| 269 | * @return true|WP_Error |
| 270 | */ |
| 271 | public static function validate_ip_block_list( $list ) { |
| 272 | $ip = self::get_current_ip(); |
| 273 | if ( '' === $ip ) { |
| 274 | return true; |
| 275 | } |
| 276 | |
| 277 | if ( ! self::ip_list_covers( $list, $ip ) ) { |
| 278 | return true; |
| 279 | } |
| 280 | |
| 281 | // The firewall checks the allow list first, so this address would never actually be blocked. |
| 282 | if ( |
| 283 | class_exists( Waf_Rules_Manager::class ) |
| 284 | && Waf_Rules_Manager::ip_allow_list_enabled() |
| 285 | && self::ip_list_covers( (string) get_option( Waf_Rules_Manager::IP_ALLOW_LIST_OPTION_NAME, '' ), $ip ) |
| 286 | ) { |
| 287 | return new WP_Error( |
| 288 | 'ip_block_list_includes_allowed_ip', |
| 289 | sprintf( |
| 290 | /* translators: %s is the visitor's IP address. */ |
| 291 | __( 'Your IP address (%s) is on your allow list, so it can\'t be added to the block list. Remove it, or the range that includes it, from the block list and try again.', 'jetpack-protect-pkg' ), |
| 292 | $ip |
| 293 | ) |
| 294 | ); |
| 295 | } |
| 296 | |
| 297 | return new WP_Error( |
| 298 | 'ip_block_list_includes_current_ip', |
| 299 | sprintf( |
| 300 | /* translators: %s is the visitor's IP address. */ |
| 301 | __( 'Your IP address (%s) is on the block list, so saving it would block you from your own site. Remove it, or the range that includes it, and try again.', 'jetpack-protect-pkg' ), |
| 302 | $ip |
| 303 | ) |
| 304 | ); |
| 305 | } |
| 306 | |
| 307 | /** |
| 308 | * Whether an IP list includes an address, through the address itself, a range or a CIDR block. |
| 309 | * |
| 310 | * @param string $list Addresses, ranges or CIDR blocks. |
| 311 | * @param string $ip The address to look for. |
| 312 | * @return bool |
| 313 | */ |
| 314 | private static function ip_list_covers( $list, $ip ) { |
| 315 | foreach ( IP_Utils::get_ip_addresses_from_string( $list ) as $entry ) { |
| 316 | // Split as the firewall does: a CIDR block, a hyphenated range or a single address. |
| 317 | $range = strpos( $entry, '/' ) !== false ? array( $entry, null ) : explode( '-', $entry ); |
| 318 | $is_match = count( $range ) === 2 |
| 319 | ? IP_Utils::ip_address_is_in_range( $ip, $range[0], $range[1] ) |
| 320 | : inet_pton( $entry ) === inet_pton( $ip ); |
| 321 | |
| 322 | if ( $is_match ) { |
| 323 | return true; |
| 324 | } |
| 325 | } |
| 326 | |
| 327 | return false; |
| 328 | } |
| 329 | |
| 330 | /** |
| 331 | * The firewall's IP lists, keyed like the Jetpack settings that hold them. |
| 332 | * |
| 333 | * @return array<string, string|bool>|object An empty object when the WAF package isn't loaded, so it's `{}` in JSON. |
| 334 | */ |
| 335 | private static function get_ip_rules() { |
| 336 | if ( ! class_exists( Waf_Rules_Manager::class ) ) { |
| 337 | return (object) array(); |
| 338 | } |
| 339 | |
| 340 | return array( |
| 341 | Waf_Rules_Manager::IP_BLOCK_LIST_OPTION_NAME => (string) get_option( Waf_Rules_Manager::IP_BLOCK_LIST_OPTION_NAME, '' ), |
| 342 | Waf_Rules_Manager::IP_BLOCK_LIST_ENABLED_OPTION_NAME => (bool) Waf_Rules_Manager::ip_block_list_enabled(), |
| 343 | Waf_Rules_Manager::IP_ALLOW_LIST_OPTION_NAME => (string) get_option( Waf_Rules_Manager::IP_ALLOW_LIST_OPTION_NAME, '' ), |
| 344 | Waf_Rules_Manager::IP_ALLOW_LIST_ENABLED_OPTION_NAME => (bool) Waf_Rules_Manager::ip_allow_list_enabled(), |
| 345 | ); |
| 346 | } |
| 347 | |
| 348 | /** |
| 349 | * Returns the blocks unchanged, since the card no longer reads the request log. |
| 350 | * |
| 351 | * @deprecated $$next-version$$ |
| 352 | * |
| 353 | * @param array $blocks Blocks from the blocklog table, newest first. |
| 354 | * @param array $entries Decoded request log entries, oldest first. |
| 355 | * @return array The blocks, unchanged. |
| 356 | */ |
| 357 | public static function add_request_details( array $blocks, array $entries ) { // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- Kept for callers. |
| 358 | _deprecated_function( __METHOD__, 'package-$$next-version$$' ); |
| 359 | return $blocks; |
| 360 | } |
| 361 | |
| 362 | /** |
| 363 | * The last 10 blocked requests, newest first. |
| 364 | * |
| 365 | * @return array |
| 366 | */ |
| 367 | private static function get_recent_blocks() { |
| 368 | if ( ! method_exists( Waf_Blocklog_Manager::class, 'get_recent_blocks' ) ) { |
| 369 | return array(); |
| 370 | } |
| 371 | |
| 372 | return Waf_Blocklog_Manager::get_recent_blocks( 10 ); |
| 373 | } |
| 374 | } |