1 /* 2 * Copyright (c) 2013-2022 Apple Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28 29 #ifndef _NET_NECP_H_ 30 #define _NET_NECP_H_ 31 32 #include <net/net_kev.h> 33 #ifdef PRIVATE 34 35 #include <netinet/in.h> 36 #include <netinet/in_stat.h> 37 #include <sys/socket.h> 38 #include <net/if.h> 39 40 #if SKYWALK 41 #include <skywalk/os_nexus_private.h> 42 #else /* !SKYWALK */ 43 typedef uint16_t nexus_port_t; 44 #endif /* !SKYWALK */ 45 46 /* 47 * Name registered by the NECP 48 */ 49 #define NECP_CONTROL_NAME "com.apple.net.necp_control" 50 51 #define NECP_TLV_LENGTH_UINT32 1 52 53 struct necp_packet_header { 54 u_int8_t packet_type; 55 u_int8_t flags; 56 u_int32_t message_id; 57 }; 58 59 typedef struct { 60 uid_t uid; 61 uuid_t effective_uuid; 62 uid_t persona_id; 63 } necp_application_id_t; 64 65 /* 66 * Control message commands 67 */ 68 #define NECP_PACKET_TYPE_POLICY_ADD 1 69 #define NECP_PACKET_TYPE_POLICY_GET 2 70 #define NECP_PACKET_TYPE_POLICY_DELETE 3 71 #define NECP_PACKET_TYPE_POLICY_APPLY_ALL 4 72 #define NECP_PACKET_TYPE_POLICY_LIST_ALL 5 73 #define NECP_PACKET_TYPE_POLICY_DELETE_ALL 6 74 #define NECP_PACKET_TYPE_SET_SESSION_PRIORITY 7 75 #define NECP_PACKET_TYPE_LOCK_SESSION_TO_PROC 8 76 #define NECP_PACKET_TYPE_REGISTER_SERVICE 9 77 #define NECP_PACKET_TYPE_UNREGISTER_SERVICE 10 78 #define NECP_PACKET_TYPE_POLICY_DUMP_ALL 11 79 80 /* 81 * Session actions 82 */ 83 #define NECP_SESSION_ACTION_POLICY_ADD 1 // In: Policy TLVs Out: necp_policy_id 84 #define NECP_SESSION_ACTION_POLICY_GET 2 // In: necp_policy_id Out: Policy TLVs 85 #define NECP_SESSION_ACTION_POLICY_DELETE 3 // In: necp_policy_id Out: None 86 #define NECP_SESSION_ACTION_POLICY_APPLY_ALL 4 // In: None Out: None 87 #define NECP_SESSION_ACTION_POLICY_LIST_ALL 5 // In: None Out: TLVs of IDs 88 #define NECP_SESSION_ACTION_POLICY_DELETE_ALL 6 // In: None Out: None 89 #define NECP_SESSION_ACTION_SET_SESSION_PRIORITY 7 // In: necp_session_priority Out: None 90 #define NECP_SESSION_ACTION_LOCK_SESSION_TO_PROC 8 // In: None Out: None 91 #define NECP_SESSION_ACTION_REGISTER_SERVICE 9 // In: uuid_t Out: None 92 #define NECP_SESSION_ACTION_UNREGISTER_SERVICE 10 // In: uuid_t Out: None 93 #define NECP_SESSION_ACTION_POLICY_DUMP_ALL 11 // In: None Out: uint32_t bytes length, then Policy TLVs 94 #define NECP_SESSION_ACTION_ADD_DOMAIN_FILTER 12 // In: struct net_bloom_filter Out: uint32_t, ID 95 #define NECP_SESSION_ACTION_REMOVE_DOMAIN_FILTER 13 // In: uint32_t, ID Out: None 96 #define NECP_SESSION_ACTION_REMOVE_ALL_DOMAIN_FILTERS 14 // In: None Out: None 97 98 /* 99 * Control message flags 100 */ 101 #define NECP_PACKET_FLAGS_RESPONSE 0x01 // Used for acks, errors, and query responses 102 103 /* 104 * Control message TLV types 105 */ 106 #define NECP_TLV_NIL 0 107 #define NECP_TLV_ERROR 1 // u_int32_t 108 #define NECP_TLV_POLICY_ORDER 2 // u_int32_t 109 #define NECP_TLV_POLICY_CONDITION 3 110 #define NECP_TLV_POLICY_RESULT 4 111 #define NECP_TLV_POLICY_ID 5 // u_int32_t 112 #define NECP_TLV_SESSION_PRIORITY 6 // u_int32_t 113 #define NECP_TLV_ATTRIBUTE_DOMAIN 7 // char[] 114 #define NECP_TLV_ATTRIBUTE_ACCOUNT 8 // char[] 115 #define NECP_TLV_SERVICE_UUID 9 // uuid_t 116 #define NECP_TLV_ROUTE_RULE 10 117 #define NECP_TLV_ATTRIBUTE_DOMAIN_OWNER 11 // char[] 118 #define NECP_TLV_ATTRIBUTE_TRACKER_DOMAIN 12 // char[] 119 #define NECP_TLV_ATTRIBUTE_DOMAIN_CONTEXT 13 // char[] 120 121 /* 122 * Control message TLV sent only by the kernel to userspace 123 */ 124 #define NECP_TLV_POLICY_OWNER 100 // char [] 125 #define NECP_TLV_POLICY_DUMP 101 126 #define NECP_TLV_POLICY_RESULT_STRING 102 // char [] 127 #define NECP_TLV_POLICY_SESSION_ORDER 103 // u_int32_t 128 129 /* 130 * Condition flags 131 */ 132 #define NECP_POLICY_CONDITION_FLAGS_NEGATIVE 0x01 // Negative 133 #define NECP_POLICY_CONDITION_FLAGS_EXACT 0x02 // For conditions that would otherwise have more inclusive matching, require an exact match 134 135 /* 136 * Conditions 137 * Used for setting policies as well as passing parameters to necp_match_policy. 138 */ 139 #define NECP_POLICY_CONDITION_DEFAULT 0 // N/A, not valid with any other conditions 140 // Socket/Application conditions 141 #define NECP_POLICY_CONDITION_APPLICATION 1 // uuid_t, uses effective UUID when possible 142 #define NECP_POLICY_CONDITION_REAL_APPLICATION 2 // uuid_t, never uses effective UUID. Only valid with NECP_POLICY_CONDITION_APPLICATION 143 #define NECP_POLICY_CONDITION_DOMAIN 3 // String, such as apple.com 144 #define NECP_POLICY_CONDITION_ACCOUNT 4 // String 145 #define NECP_POLICY_CONDITION_ENTITLEMENT 5 // String 146 #define NECP_POLICY_CONDITION_PID 6 // pid_t 147 #define NECP_POLICY_CONDITION_UID 7 // uid_t 148 #define NECP_POLICY_CONDITION_ALL_INTERFACES 8 // N/A 149 #define NECP_POLICY_CONDITION_BOUND_INTERFACE 9 // String 150 #define NECP_POLICY_CONDITION_TRAFFIC_CLASS 10 // necp_policy_condition_tc_range 151 // Socket/IP conditions 152 #define NECP_POLICY_CONDITION_IP_PROTOCOL 11 // u_int16_t 153 #define NECP_POLICY_CONDITION_LOCAL_ADDR 12 // necp_policy_condition_addr 154 #define NECP_POLICY_CONDITION_REMOTE_ADDR 13 // necp_policy_condition_addr 155 #define NECP_POLICY_CONDITION_LOCAL_ADDR_RANGE 14 // necp_policy_condition_addr_range 156 #define NECP_POLICY_CONDITION_REMOTE_ADDR_RANGE 15 // necp_policy_condition_addr_range 157 #define NECP_POLICY_CONDITION_AGENT_TYPE 16 // struct necp_policy_condition_agent_type 158 #define NECP_POLICY_CONDITION_HAS_CLIENT 17 // N/A 159 #define NECP_POLICY_CONDITION_LOCAL_NETWORKS 18 // Matches all local networks 160 // Socket-only conditions 161 #define NECP_POLICY_CONDITION_FLOW_IP_PROTOCOL 19 // u_int16_t 162 #define NECP_POLICY_CONDITION_FLOW_LOCAL_ADDR 20 // necp_policy_condition_addr 163 #define NECP_POLICY_CONDITION_FLOW_REMOTE_ADDR 21 // necp_policy_condition_addr 164 #define NECP_POLICY_CONDITION_FLOW_LOCAL_ADDR_RANGE 22 // necp_policy_condition_addr_range 165 #define NECP_POLICY_CONDITION_FLOW_REMOTE_ADDR_RANGE 23 // necp_policy_condition_addr_range 166 #define NECP_POLICY_CONDITION_FLOW_IS_LOOPBACK 31 // N/A 167 // Socket/Application conditions, continued 168 #define NECP_POLICY_CONDITION_CLIENT_FLAGS 24 // u_int32_t, values from NECP_CLIENT_PARAMETER_FLAG_* 169 #define NECP_POLICY_CONDITION_FLOW_LOCAL_ADDR_EMPTY 25 // N/A 170 #define NECP_POLICY_CONDITION_FLOW_REMOTE_ADDR_EMPTY 26 // N/A 171 #define NECP_POLICY_CONDITION_PLATFORM_BINARY 27 // N/A 172 #define NECP_POLICY_CONDITION_SDK_VERSION 28 // struct necp_policy_condition_sdk_version 173 #define NECP_POLICY_CONDITION_SIGNING_IDENTIFIER 29 // String 174 #define NECP_POLICY_CONDITION_PACKET_FILTER_TAGS 30 // u_int16_t 175 #define NECP_POLICY_CONDITION_DELEGATE_IS_PLATFORM_BINARY 32 // N/A 176 #define NECP_POLICY_CONDITION_DOMAIN_OWNER 33 // String, owner of domain (for example, "Google Inc") 177 #define NECP_POLICY_CONDITION_DOMAIN_CONTEXT 34 // String, eTLD+1 leading to networking activities to the domain 178 #define NECP_POLICY_CONDITION_TRACKER_DOMAIN 35 // String, tracker domain 179 #define NECP_POLICY_CONDITION_ATTRIBUTED_BUNDLE_IDENTIFIER 36 // String, app to which traffic is attributed to 180 #define NECP_POLICY_CONDITION_SCHEME_PORT 37 // u_int16_t, the port associated with the scheme for a connection 181 #define NECP_POLICY_CONDITION_DOMAIN_FILTER 38 // struct net_bloom_filter 182 #define NECP_POLICY_CONDITION_SYSTEM_SIGNED_RESULT 39 // N/A 183 #define NECP_POLICY_CONDITION_REAL_UID 40 // uid_t 184 #define NECP_POLICY_CONDITION_APPLICATION_ID 41 // necp_application_id_t 185 #define NECP_POLICY_CONDITION_URL 42 // String, URL 186 #define NECP_POLICY_CONDITION_BOUND_INTERFACE_FLAGS 43 // Interface flags: u_int32_t flags, u_int32_t eflags, u_int32_t xflags 187 188 189 /* 190 * Policy Condition Bound Interface Flags Order 191 */ 192 #define NECP_POLICY_CONDITION_BOUND_INTERFACE_FLAGS_IDX_FLAGS 0 193 #define NECP_POLICY_CONDITION_BOUND_INTERFACE_FLAGS_IDX_EFLAGS 1 194 #define NECP_POLICY_CONDITION_BOUND_INTERFACE_FLAGS_IDX_XFLAGS 2 195 #define NECP_POLICY_CONDITION_BOUND_INTERFACE_FLAGS_IDX_MAX 3 196 197 /* 198 * Policy Packet tags 199 */ 200 #define NECP_POLICY_CONDITION_PACKET_FILTER_TAG_STACK_DROP 0x01 201 #define NECP_POLICY_CONDITION_PACKET_FILTER_TAG_MAX NECP_POLICY_CONDITION_PACKET_FILTER_TAG_STACK_DROP 202 203 /* 204 * Results 205 */ 206 #define NECP_POLICY_RESULT_PASS 1 // N/A 207 #define NECP_POLICY_RESULT_SKIP 2 // u_int32_t, policy order to skip to. 0 to skip all session policies. 208 #define NECP_POLICY_RESULT_DROP 3 // N/A 209 #define NECP_POLICY_RESULT_SOCKET_DIVERT 4 // u_int32_t, flow divert control unit 210 #define NECP_POLICY_RESULT_SOCKET_FILTER 5 // u_int32_t, filter control unit 211 #define NECP_POLICY_RESULT_IP_TUNNEL 6 // String, interface name 212 #define NECP_POLICY_RESULT_IP_FILTER 7 // ? 213 #define NECP_POLICY_RESULT_TRIGGER 8 // Deprecated 214 #define NECP_POLICY_RESULT_TRIGGER_IF_NEEDED 9 // Deprecated 215 #define NECP_POLICY_RESULT_TRIGGER_SCOPED 10 // Deprecated 216 #define NECP_POLICY_RESULT_NO_TRIGGER_SCOPED 11 // Deprecated 217 #define NECP_POLICY_RESULT_SOCKET_SCOPED 12 // String, interface name 218 #define NECP_POLICY_RESULT_ROUTE_RULES 13 // N/A, must have route rules defined 219 #define NECP_POLICY_RESULT_USE_NETAGENT 14 // netagent uuid_t 220 #define NECP_POLICY_RESULT_NETAGENT_SCOPED 15 // netagent uuid_t 221 #define NECP_POLICY_RESULT_SCOPED_DIRECT 16 // N/A, scopes to primary physical interface 222 #define NECP_POLICY_RESULT_ALLOW_UNENTITLED 17 // N/A 223 #define NECP_POLICY_RESULT_REMOVE_NETAGENT 18 // netagent uuid_t 224 225 #define NECP_POLICY_RESULT_MAX NECP_POLICY_RESULT_REMOVE_NETAGENT 226 227 /* 228 * PASS Result Flags 229 */ 230 #define NECP_POLICY_PASS_NO_SKIP_IPSEC 0x01 231 #define NECP_POLICY_PASS_PF_TAG 0x02 232 233 /* 234 * DROP Result Flags 235 */ 236 #define NECP_POLICY_DROP_FLAG_LOCAL_NETWORK 0x01 237 #define NECP_POLICY_DROP_FLAG_SUPPRESS_ALERTS 0x02 238 239 /* 240 * Route Rules 241 * Detailed parameters for NECP_POLICY_RESULT_ROUTE_RULES. 242 */ 243 #define NECP_ROUTE_RULE_NONE 0 // N/A 244 #define NECP_ROUTE_RULE_DENY_INTERFACE 1 // String, or empty to match all 245 #define NECP_ROUTE_RULE_ALLOW_INTERFACE 2 // String, or empty to match all 246 #define NECP_ROUTE_RULE_QOS_MARKING 3 // String, or empty to match all 247 #define NECP_ROUTE_RULE_DENY_LQM_ABORT 4 // String, or empty to match all 248 #define NECP_ROUTE_RULE_USE_NETAGENT 5 // UUID, followed by string or empty 249 #define NECP_ROUTE_RULE_REMOVE_NETAGENT 6 // UUID, followed by string or empty 250 #define NECP_ROUTE_RULE_DIVERT_SOCKET 7 // u_int32_t control unit, followed by string or empty 251 #define NECP_ROUTE_RULE_DENY_INTERFACE_WITH_TYPE 8 // u_int32_t effective type, followed by string or empty 252 253 #define NECP_ROUTE_RULE_FLAG_CELLULAR 0x01 254 #define NECP_ROUTE_RULE_FLAG_WIFI 0x02 255 #define NECP_ROUTE_RULE_FLAG_WIRED 0x04 256 #define NECP_ROUTE_RULE_FLAG_EXPENSIVE 0x08 257 #define NECP_ROUTE_RULE_FLAG_CONSTRAINED 0x10 258 #define NECP_ROUTE_RULE_FLAG_COMPANION 0x20 259 260 #define NECP_ROUTE_RULE_FLAG_NETAGENT 0x80 // Last bit, reserved to mark that this applies only when an agent UUID is present 261 262 #define NECP_ROUTE_RULES_SUPPORT_NETAGENT_EXCEPTIONS 1 263 264 /* 265 * Error types 266 */ 267 #define NECP_ERROR_INTERNAL 0 268 #define NECP_ERROR_UNKNOWN_PACKET_TYPE 1 269 #define NECP_ERROR_INVALID_TLV 2 270 #define NECP_ERROR_POLICY_RESULT_INVALID 3 271 #define NECP_ERROR_POLICY_CONDITIONS_INVALID 4 272 #define NECP_ERROR_POLICY_ID_NOT_FOUND 5 273 #define NECP_ERROR_INVALID_PROCESS 6 274 #define NECP_ERROR_ROUTE_RULES_INVALID 7 275 276 // Modifiers 277 #define NECP_MASK_USERSPACE_ONLY 0x80000000 // on filter_control_unit value 278 #define NECP_MASK_PRESERVE_CONNECTIONS 0x20000000 // on filter_control_unit value 279 280 struct necp_policy_condition_tc_range { 281 u_int32_t start_tc; 282 u_int32_t end_tc; 283 } __attribute__((__packed__)); 284 285 struct necp_policy_condition_addr { 286 u_int8_t prefix; 287 union { 288 #if !__has_ptrcheck 289 struct sockaddr sa; 290 #endif 291 struct __sockaddr_header sah; 292 struct sockaddr_in sin; 293 struct sockaddr_in6 sin6; 294 } address __attribute__((__packed__)); 295 } __attribute__((__packed__)); 296 297 struct necp_policy_condition_addr_range { 298 union { 299 #if !__has_ptrcheck 300 struct sockaddr sa; 301 #endif 302 struct __sockaddr_header sah; 303 struct sockaddr_in sin; 304 struct sockaddr_in6 sin6; 305 } start_address __attribute__((__packed__)); 306 union { 307 #if !__has_ptrcheck 308 struct sockaddr sa; 309 #endif 310 struct __sockaddr_header sah; 311 struct sockaddr_in sin; 312 struct sockaddr_in6 sin6; 313 } end_address __attribute__((__packed__)); 314 } __attribute__((__packed__)); 315 316 struct necp_policy_condition_agent_type { 317 char agent_domain[32]; 318 char agent_type[32]; 319 } __attribute__((__packed__)); 320 321 struct necp_policy_condition_sdk_version { 322 uint32_t platform; // e.g., PLATFORM_IOS 323 uint32_t min_version; // Encoded as XXXX.YY.ZZ 324 uint32_t version; // Encoded as XXXX.YY.ZZ 325 } __attribute__((__packed__)); 326 327 #define NECP_SESSION_PRIORITY_UNKNOWN 0 328 #define NECP_SESSION_PRIORITY_CONTROL 1 329 #define NECP_SESSION_PRIORITY_CONTROL_1 2 330 #define NECP_SESSION_PRIORITY_PRIVILEGED_TUNNEL 3 331 #define NECP_SESSION_PRIORITY_HIGH 4 332 #define NECP_SESSION_PRIORITY_HIGH_1 5 333 #define NECP_SESSION_PRIORITY_HIGH_2 6 334 #define NECP_SESSION_PRIORITY_HIGH_3 7 335 #define NECP_SESSION_PRIORITY_HIGH_4 8 336 #define NECP_SESSION_PRIORITY_HIGH_RESTRICTED 9 337 #define NECP_SESSION_PRIORITY_DEFAULT 10 338 #define NECP_SESSION_PRIORITY_LOW 11 339 #define NECP_SESSION_NUM_PRIORITIES NECP_SESSION_PRIORITY_LOW 340 341 typedef u_int32_t necp_policy_id; 342 typedef u_int32_t necp_policy_order; 343 typedef u_int32_t necp_session_priority; 344 345 typedef u_int32_t necp_kernel_policy_result; 346 typedef u_int32_t necp_kernel_policy_filter; 347 348 typedef union { 349 u_int tunnel_interface_index; 350 u_int scoped_interface_index; 351 u_int32_t flow_divert_control_unit; 352 u_int32_t filter_control_unit; 353 u_int32_t pass_flags; 354 u_int32_t drop_flags; 355 } necp_kernel_policy_routing_result_parameter; 356 357 #define NECP_SERVICE_FLAGS_REGISTERED 0x01 358 #define NECP_MAX_NETAGENTS 16 359 360 #define NECP_AGENT_USE_FLAG_SCOPE 0x01 361 #define NECP_AGENT_USE_FLAG_REMOVE 0x02 362 363 #define NECP_TFO_COOKIE_LEN_MAX 16 364 struct necp_aggregate_result { 365 necp_kernel_policy_result routing_result; 366 necp_kernel_policy_routing_result_parameter routing_result_parameter; 367 necp_kernel_policy_filter filter_control_unit; 368 u_int32_t flow_divert_aggregate_unit; 369 necp_kernel_policy_result service_action; 370 uuid_t service_uuid; 371 u_int32_t service_flags; 372 u_int32_t service_data; 373 u_int routed_interface_index; 374 u_int32_t policy_id; 375 u_int32_t skip_policy_id; 376 uuid_t netagents[NECP_MAX_NETAGENTS]; 377 u_int32_t netagent_use_flags[NECP_MAX_NETAGENTS]; 378 struct ipv6_prefix nat64_prefixes[NAT64_MAX_NUM_PREFIXES]; 379 u_int8_t mss_recommended; 380 }; 381 382 /* 383 * Statistics. It would be nice if the definitions in ntstat.h could be used, 384 * but they get entangled with #defines for v4 etc in pfvar.h and it may be better practice 385 * to have separate definitions here. 386 */ 387 struct necp_stat_counts { 388 /* Counters */ 389 u_int64_t necp_stat_rxpackets __attribute__((aligned(8))); 390 u_int64_t necp_stat_rxbytes __attribute__((aligned(8))); 391 u_int64_t necp_stat_txpackets __attribute__((aligned(8))); 392 u_int64_t necp_stat_txbytes __attribute__((aligned(8))); 393 394 u_int32_t necp_stat_rxduplicatebytes; 395 u_int32_t necp_stat_rxoutoforderbytes; 396 u_int32_t necp_stat_txretransmit; 397 398 u_int32_t necp_stat_connectattempts; 399 u_int32_t necp_stat_connectsuccesses; 400 401 u_int32_t necp_stat_min_rtt; 402 u_int32_t necp_stat_avg_rtt; 403 u_int32_t necp_stat_var_rtt; 404 405 #define NECP_STAT_ROUTE_FLAGS 1 406 u_int32_t necp_stat_route_flags; 407 }; 408 409 // Note, some metadata is implicit in the necp client itself: 410 // From the process itself : pid, upid, uuid, proc name. 411 // From the necp client parameters: local and remote addresses, euuid, traffic class, ifindex 412 // 413 // The following may well be supplied via future necp client parameters, 414 // but they are here so they don't get forgotten. 415 struct necp_basic_metadata { 416 u_int32_t rcvbufsize; 417 u_int32_t rcvbufused; 418 }; 419 420 struct necp_connection_probe_status { 421 unsigned int probe_activated : 1; 422 unsigned int write_probe_failed : 1; 423 unsigned int read_probe_failed : 1; 424 unsigned int conn_probe_failed : 1; 425 }; 426 427 struct necp_extra_tcp_metadata { 428 struct necp_connection_probe_status probestatus; 429 430 u_int32_t sndbufsize; 431 u_int32_t sndbufused; 432 u_int32_t txunacked; 433 u_int32_t txwindow; 434 u_int32_t txcwindow; 435 u_int32_t flags; // use SOF_* 436 u_int32_t flags1; // use SOF1_* 437 u_int32_t traffic_mgt_flags; 438 u_int32_t cc_alg_index; 439 u_int32_t state; 440 }; 441 442 struct necp_stats_hdr { 443 u_int32_t necp_stats_type __attribute__((aligned(8))); 444 u_int32_t necp_stats_ver; 445 u_int64_t __necp_stats_reserved; // Pad the field for future use 446 }; 447 448 #define NECP_CLIENT_STATISTICS_TYPE_TCP 1 // Identifies use of necp_tcp_stats 449 #define NECP_CLIENT_STATISTICS_TYPE_UDP 2 // Identifies use of necp_udp_stats 450 #define NECP_CLIENT_STATISTICS_TYPE_QUIC 3 // Identifies use of necp_quic_stats 451 452 #define NECP_CLIENT_STATISTICS_TYPE_TCP_VER_1 1 // Currently supported version for TCP 453 #define NECP_CLIENT_STATISTICS_TYPE_UDP_VER_1 1 // Currently supported version for UDP 454 #define NECP_CLIENT_STATISTICS_TYPE_QUIC_VER_1 1 // Currently supported version for QUIC 455 456 #define NECP_CLIENT_STATISTICS_TYPE_TCP_CURRENT_VER NECP_CLIENT_STATISTICS_TYPE_TCP_VER_1 457 #define NECP_CLIENT_STATISTICS_TYPE_UDP_CURRENT_VER NECP_CLIENT_STATISTICS_TYPE_UDP_VER_1 458 #define NECP_CLIENT_STATISTICS_TYPE_QUIC_CURRENT_VER NECP_CLIENT_STATISTICS_TYPE_QUIC_VER_1 459 460 #define NECP_CLIENT_STATISTICS_EVENT_INIT 0x00000000 // Register the flow 461 #define NECP_CLIENT_STATISTICS_EVENT_TIME_WAIT 0x00000001 // The flow is effectively finished but waiting on timer 462 463 struct necp_tcp_stats { 464 struct necp_stats_hdr necp_tcp_hdr; 465 struct necp_stat_counts necp_tcp_counts; 466 struct necp_basic_metadata necp_tcp_basic; 467 struct necp_extra_tcp_metadata necp_tcp_extra; 468 }; 469 470 struct necp_udp_stats { 471 struct necp_stats_hdr necp_udp_hdr; 472 struct necp_stat_counts necp_udp_counts; 473 struct necp_basic_metadata necp_udp_basic; 474 }; 475 476 477 /* 478 * The following reflects the special case for QUIC. 479 * It is a streaming protocol built on top of UDP. 480 * Therefore QUIC stats are defined as basic UDP stats 481 * with some extra meta data. 482 * TODO: For now the extra metadata is an exact replica 483 * of the metadata for TCP. However keeping that separate allows 484 * the structures to diverge later as new stats are added. 485 */ 486 #define QUIC_STATELESS_RESET_TOKEN_SIZE 16 487 #define NECP_QUIC_HAS_PROBE_STATUS 1 488 struct necp_extra_quic_metadata { 489 u_int32_t sndbufsize; 490 u_int32_t sndbufused; 491 u_int32_t txunacked; 492 u_int32_t txwindow; 493 u_int32_t txcwindow; 494 u_int32_t traffic_mgt_flags; 495 u_int32_t cc_alg_index; 496 u_int32_t state; 497 u_int8_t ssr_token[QUIC_STATELESS_RESET_TOKEN_SIZE]; 498 struct necp_connection_probe_status probestatus; 499 }; 500 501 #define necp_quic_hdr necp_quic_udp_stats.necp_udp_hdr 502 #define necp_quic_counts necp_quic_udp_stats.necp_udp_counts 503 #define necp_quic_basic necp_quic_udp_stats.necp_udp_basic 504 struct necp_quic_stats { 505 struct necp_udp_stats necp_quic_udp_stats; 506 struct necp_extra_quic_metadata necp_quic_extra; 507 }; 508 509 typedef struct necp_all_stats { 510 union { 511 struct necp_tcp_stats tcp_stats; 512 struct necp_udp_stats udp_stats; 513 struct necp_quic_stats quic_stats; 514 } all_stats_u; 515 } necp_all_stats; 516 517 // Memory for statistics is requested via a necp_stats_bufreq 518 // 519 struct necp_stats_bufreq { 520 u_int32_t necp_stats_bufreq_id __attribute__((aligned(8))); 521 u_int32_t necp_stats_bufreq_type; // NECP_CLIENT_STATISTICS_TYPE_* 522 u_int32_t necp_stats_bufreq_ver; // NECP_CLIENT_STATISTICS_TYPE_*_VER 523 u_int32_t necp_stats_bufreq_size; 524 union { 525 void *necp_stats_bufreq_addr; 526 mach_vm_address_t necp_stats_bufreq_uaddr; 527 }; 528 }; 529 530 #define NECP_CLIENT_STATISTICS_BUFREQ_ID 0xbf // Distinguishes from statistics actions taking a necp_all_stats struct 531 532 // There is a limit to the number of statistics structures that may be allocated per process, subject to change 533 // 534 #define NECP_MAX_PER_PROCESS_CLIENT_STATISTICS_STRUCTS 512 535 536 #define NECP_TCP_ECN_HEURISTICS_SYN_RST 1 537 typedef struct necp_tcp_ecn_cache { 538 u_int8_t necp_tcp_ecn_heuristics_success:1; 539 u_int8_t necp_tcp_ecn_heuristics_loss:1; 540 u_int8_t necp_tcp_ecn_heuristics_drop_rst:1; 541 u_int8_t necp_tcp_ecn_heuristics_drop_rxmt:1; 542 u_int8_t necp_tcp_ecn_heuristics_aggressive:1; 543 u_int8_t necp_tcp_ecn_heuristics_syn_rst:1; 544 } necp_tcp_ecn_cache; 545 546 #define NECP_TCP_TFO_HEURISTICS_RST 1 547 typedef struct necp_tcp_tfo_cache { 548 u_int8_t necp_tcp_tfo_cookie[NECP_TFO_COOKIE_LEN_MAX]; 549 u_int8_t necp_tcp_tfo_cookie_len; 550 u_int8_t necp_tcp_tfo_heuristics_success:1; // TFO succeeded with data in the SYN 551 u_int8_t necp_tcp_tfo_heuristics_loss:1; // TFO SYN-loss with data 552 u_int8_t necp_tcp_tfo_heuristics_middlebox:1; // TFO middlebox detected 553 u_int8_t necp_tcp_tfo_heuristics_success_req:1; // TFO succeeded with the TFO-option in the SYN 554 u_int8_t necp_tcp_tfo_heuristics_loss_req:1; // TFO SYN-loss with the TFO-option 555 u_int8_t necp_tcp_tfo_heuristics_rst_data:1; // Recevied RST upon SYN with data in the SYN 556 u_int8_t necp_tcp_tfo_heuristics_rst_req:1; // Received RST upon SYN with the TFO-option 557 } necp_tcp_tfo_cache; 558 559 #define NECP_CLIENT_CACHE_TYPE_ECN 1 // Identifies use of necp_tcp_ecn_cache 560 #define NECP_CLIENT_CACHE_TYPE_TFO 2 // Identifies use of necp_tcp_tfo_cache 561 562 #define NECP_CLIENT_CACHE_TYPE_ECN_VER_1 1 // Currently supported version for ECN 563 #define NECP_CLIENT_CACHE_TYPE_TFO_VER_1 1 // Currently supported version for TFO 564 565 typedef struct necp_cache_buffer { 566 u_int8_t necp_cache_buf_type; // NECP_CLIENT_CACHE_TYPE_* 567 u_int8_t necp_cache_buf_ver; // NECP_CLIENT_CACHE_TYPE_*_VER 568 u_int32_t necp_cache_buf_size; 569 mach_vm_address_t necp_cache_buf_addr; 570 } necp_cache_buffer; 571 572 /* 573 * NECP Client definitions 574 */ 575 #define NECP_MAX_CLIENT_PARAMETERS_SIZE 1024 576 #define NECP_MAX_CLIENT_RESULT_SIZE 512 // Legacy 577 #define NECP_BASE_CLIENT_RESULT_SIZE 1024 578 #define NECP_CLIENT_FLOW_RESULT_SIZE 512 579 580 #define NECP_OPEN_FLAG_OBSERVER 0x01 // Observers can query clients they don't own 581 #define NECP_OPEN_FLAG_BACKGROUND 0x02 // Mark this fd as backgrounded 582 #define NECP_OPEN_FLAG_PUSH_OBSERVER 0x04 // When used with the OBSERVER flag, allows updates to be pushed. Adding clients is not allowed in this mode. 583 584 #define NECP_FD_SUPPORTS_GUARD 1 585 586 #define NECP_CLIENT_ACTION_ADD 1 // Register a new client. Input: parameters in buffer; Output: client_id 587 #define NECP_CLIENT_ACTION_REMOVE 2 // Unregister a client. Input: client_id, optional struct ifnet_stats_per_flow 588 #define NECP_CLIENT_ACTION_COPY_PARAMETERS 3 // Copy client parameters. Input: client_id; Output: parameters in buffer 589 #define NECP_CLIENT_ACTION_COPY_RESULT 4 // Copy client result. Input: client_id; Output: result in buffer 590 #define NECP_CLIENT_ACTION_COPY_LIST 5 // Copy all client IDs. Output: struct necp_client_list in buffer 591 #define NECP_CLIENT_ACTION_REQUEST_NEXUS_INSTANCE 6 // Request a nexus instance from a nexus provider, optional struct necp_stats_bufreq 592 #define NECP_CLIENT_ACTION_AGENT 7 // Interact with agent. Input: client_id, agent parameters 593 #define NECP_CLIENT_ACTION_COPY_AGENT 8 // Copy agent content. Input: agent UUID; Output: struct netagent 594 #define NECP_CLIENT_ACTION_COPY_INTERFACE 9 // Copy interface details. Input: ifindex cast to UUID; Output: struct necp_interface_details 595 #define NECP_CLIENT_ACTION_SET_STATISTICS 10 // Deprecated 596 #define NECP_CLIENT_ACTION_COPY_ROUTE_STATISTICS 11 // Get route statistics. Input: client_id; Output: struct necp_stat_counts 597 #define NECP_CLIENT_ACTION_AGENT_USE 12 // Return the use count and increment the use count. Input/Output: struct necp_agent_use_parameters 598 #define NECP_CLIENT_ACTION_MAP_SYSCTLS 13 // Get the read-only sysctls memory location. Output: mach_vm_address_t 599 #define NECP_CLIENT_ACTION_UPDATE_CACHE 14 // Update heuristics and cache 600 #define NECP_CLIENT_ACTION_COPY_CLIENT_UPDATE 15 // Fetch an updated client for push-mode observer. Output: Client id, struct necp_client_observer_update in buffer 601 #define NECP_CLIENT_ACTION_COPY_UPDATED_RESULT 16 // Copy client result only if changed. Input: client_id; Output: result in buffer 602 #define NECP_CLIENT_ACTION_ADD_FLOW 17 // Add a flow. Input: client_id; Output: struct necp_client_add_flow 603 #define NECP_CLIENT_ACTION_REMOVE_FLOW 18 // Remove a flow. Input: flow_id, optional struct ifnet_stats_per_flow 604 #define NECP_CLIENT_ACTION_CLAIM 19 // Claim a client that has been added for this unique PID. Input: client_id 605 #define NECP_CLIENT_ACTION_SIGN 20 // Sign a query answer. Input: struct necp_client_signable; Output: struct necp_client_signature 606 #define NECP_CLIENT_ACTION_GET_INTERFACE_ADDRESS 21 // Get the best interface local address for given remote address. Input: ifindex, remote sockaddr; Output: matching local sockaddr 607 #define NECP_CLIENT_ACTION_ACQUIRE_AGENT_TOKEN 22 // Get a one-time use token from an agent. Input: agent UUID; Output: token buffer 608 #define NECP_CLIENT_ACTION_VALIDATE 23 // Validate a query answer. Input: struct necp_client_validatable; Output: None 609 #define NECP_CLIENT_ACTION_GET_SIGNED_CLIENT_ID 24 // Get a client ID for the appliction along with a signature. 610 #define NECP_CLIENT_ACTION_SET_SIGNED_CLIENT_ID 25 // Set a client ID for the appliction along with a signature. 611 612 #define NECP_CLIENT_PARAMETER_APPLICATION NECP_POLICY_CONDITION_APPLICATION // Requires entitlement 613 #define NECP_CLIENT_PARAMETER_REAL_APPLICATION NECP_POLICY_CONDITION_REAL_APPLICATION // Requires entitlement 614 #define NECP_CLIENT_PARAMETER_DOMAIN NECP_POLICY_CONDITION_DOMAIN 615 #define NECP_CLIENT_PARAMETER_DOMAIN_OWNER NECP_POLICY_CONDITION_DOMAIN_OWNER 616 #define NECP_CLIENT_PARAMETER_DOMAIN_CONTEXT NECP_POLICY_CONDITION_DOMAIN_CONTEXT 617 #define NECP_CLIENT_PARAMETER_TRACKER_DOMAIN NECP_POLICY_CONDITION_TRACKER_DOMAIN 618 #define NECP_CLIENT_PARAMETER_URL NECP_POLICY_CONDITION_URL 619 #define NECP_CLIENT_PARAMETER_ATTRIBUTED_BUNDLE_IDENTIFIER NECP_POLICY_CONDITION_ATTRIBUTED_BUNDLE_IDENTIFIER 620 #define NECP_CLIENT_PARAMETER_ACCOUNT NECP_POLICY_CONDITION_ACCOUNT 621 #define NECP_CLIENT_PARAMETER_PID NECP_POLICY_CONDITION_PID // Requires entitlement 622 #define NECP_CLIENT_PARAMETER_UID NECP_POLICY_CONDITION_UID // Requires entitlement 623 #define NECP_CLIENT_PARAMETER_BOUND_INTERFACE NECP_POLICY_CONDITION_BOUND_INTERFACE 624 #define NECP_CLIENT_PARAMETER_TRAFFIC_CLASS NECP_POLICY_CONDITION_TRAFFIC_CLASS 625 #define NECP_CLIENT_PARAMETER_IP_PROTOCOL NECP_POLICY_CONDITION_IP_PROTOCOL 626 #define NECP_CLIENT_PARAMETER_LOCAL_ADDRESS NECP_POLICY_CONDITION_LOCAL_ADDR 627 #define NECP_CLIENT_PARAMETER_REMOTE_ADDRESS NECP_POLICY_CONDITION_REMOTE_ADDR 628 #define NECP_CLIENT_PARAMETER_SCHEME_PORT NECP_POLICY_CONDITION_SCHEME_PORT 629 #define NECP_CLIENT_PARAMETER_APPLICATION_ID NECP_POLICY_CONDITION_APPLICATION_ID 630 #define NECP_CLIENT_PARAMETER_NEXUS_KEY 102 631 632 // "Prohibit" will never choose an interface with that property 633 #define NECP_CLIENT_PARAMETER_PROHIBIT_INTERFACE 100 // String, interface name 634 #define NECP_CLIENT_PARAMETER_PROHIBIT_IF_TYPE 101 // u_int8_t, see ifru_functional_type in <net/if.h> 635 #define NECP_CLIENT_PARAMETER_PROHIBIT_AGENT 102 // uuid_t, network agent UUID 636 #define NECP_CLIENT_PARAMETER_PROHIBIT_AGENT_TYPE 103 // struct necp_client_parameter_netagent_type 637 638 // "Require" will choose an interface with that property, or none if not found 639 #define NECP_CLIENT_PARAMETER_REQUIRE_IF_TYPE 111 // u_int8_t, see ifru_functional_type in <net/if.h> 640 #define NECP_CLIENT_PARAMETER_REQUIRE_AGENT 112 // uuid_t, network agent UUID 641 #define NECP_CLIENT_PARAMETER_REQUIRE_AGENT_TYPE 113 // struct necp_client_parameter_netagent_type 642 643 // "Prefer" will choose an interface with an agent, or best otherwise if not found 644 #define NECP_CLIENT_PARAMETER_PREFER_AGENT 122 // uuid_t, network agent UUID 645 #define NECP_CLIENT_PARAMETER_PREFER_AGENT_TYPE 123 // struct necp_client_parameter_netagent_type 646 647 // "Avoid" will choose an interface without an agent, or best otherwise if unavoidable 648 #define NECP_CLIENT_PARAMETER_AVOID_AGENT 124 // uuid_t, network agent UUID 649 #define NECP_CLIENT_PARAMETER_AVOID_AGENT_TYPE 125 // struct necp_client_parameter_netagent_type 650 651 // Use actions with NECP_CLIENT_ACTION_AGENT 652 #define NECP_CLIENT_PARAMETER_TRIGGER_AGENT 130 // uuid_t, network agent UUID 653 #define NECP_CLIENT_PARAMETER_ASSERT_AGENT 131 // uuid_t, network agent UUID 654 #define NECP_CLIENT_PARAMETER_UNASSERT_AGENT 132 // uuid_t, network agent UUID 655 #define NECP_CLIENT_PARAMETER_AGENT_ADD_GROUP_MEMBERS 133 // struct necp_client_group_action 656 #define NECP_CLIENT_PARAMETER_AGENT_REMOVE_GROUP_MEMBERS 134 // struct necp_client_group_action 657 #define NECP_CLIENT_PARAMETER_REPORT_AGENT_ERROR 135 // int32_t 658 659 #define NECP_CLIENT_PARAMETER_FALLBACK_MODE 140 // u_int8_t, see SO_FALLBACK_MODE_* values 660 661 #define NECP_CLIENT_PARAMETER_PARENT_ID 150 // uuid_t, client UUID 662 663 #define NECP_CLIENT_PARAMETER_LOCAL_ENDPOINT 200 // struct necp_client_endpoint 664 #define NECP_CLIENT_PARAMETER_REMOTE_ENDPOINT 201 // struct necp_client_endpoint 665 #define NECP_CLIENT_PARAMETER_BROWSE_DESCRIPTOR 202 // struct necp_client_endpoint 666 #define NECP_CLIENT_PARAMETER_RESOLVER_TAG 203 // struct necp_client_validatable 667 #define NECP_CLIENT_PARAMETER_ADVERTISE_DESCRIPTOR 204 // struct necp_client_endpoint 668 #define NECP_CLIENT_PARAMETER_GROUP_DESCRIPTOR 205 // struct necp_client_group 669 670 #define NECP_CLIENT_PARAMETER_DELEGATED_UPID 210 // u_int64_t, requires entitlement 671 672 #define NECP_CLIENT_PARAMETER_ETHERTYPE 220 // u_int16_t, ethertype 673 #define NECP_CLIENT_PARAMETER_TRANSPORT_PROTOCOL 221 // u_int8_t, IPPROTO_ 674 675 #define NECP_CLIENT_PARAMETER_LOCAL_ADDRESS_PREFERENCE 230 // u_int8_t, NECP_CLIENT_PARAMETER_LOCAL_ADDRESS_PREFERENCE_ 676 677 #define NECP_CLIENT_PARAMETER_LOCAL_ADDRESS_PREFERENCE_DEFAULT 0 678 #define NECP_CLIENT_PARAMETER_LOCAL_ADDRESS_PREFERENCE_TEMPORARY 1 679 #define NECP_CLIENT_PARAMETER_LOCAL_ADDRESS_PREFERENCE_STABLE 2 680 681 #define NECP_CLIENT_PARAMETER_FLAGS 250 // u_int32_t, see NECP_CLIENT_PAREMETER_FLAG_* values 682 #define NECP_CLIENT_PARAMETER_FLOW_DEMUX_PATTERN 251 // struct necp_demux_pattern 683 684 #define NECP_CLIENT_PARAMETER_FLAG_MULTIPATH 0x0001 // Get multipath interface results 685 #define NECP_CLIENT_PARAMETER_FLAG_BROWSE 0x0002 // Agent assertions on nexuses are requests to browse 686 #define NECP_CLIENT_PARAMETER_FLAG_PROHIBIT_EXPENSIVE 0x0004 // Prohibit expensive interfaces 687 #define NECP_CLIENT_PARAMETER_FLAG_LISTENER 0x0008 // Client is interested in listening for inbound connections 688 #define NECP_CLIENT_PARAMETER_FLAG_DISCRETIONARY 0x0010 // Client's traffic is discretionary, and eligible for early defuncting 689 #define NECP_CLIENT_PARAMETER_FLAG_ECN_ENABLE 0x0020 // Client is requesting to enable ECN 690 #define NECP_CLIENT_PARAMETER_FLAG_ECN_DISABLE 0x0040 // Client is requesting to disable ECN 691 #define NECP_CLIENT_PARAMETER_FLAG_TFO_ENABLE 0x0080 // Client is requesting to enable TFO 692 #define NECP_CLIENT_PARAMETER_FLAG_ONLY_PRIMARY_REQUIRES_TYPE 0x0100 // Interpret NECP_CLIENT_PARAMETER_REQUIRE_IF_TYPE only for primary interface, and allow exceptions for multipath or listeners 693 #define NECP_CLIENT_PARAMETER_FLAG_CUSTOM_ETHER 0x0200 // Client expects to open a custom ethernet channel 694 #define NECP_CLIENT_PARAMETER_FLAG_CUSTOM_IP 0x0400 // Client expects to open a custom IP protocol channel 695 #define NECP_CLIENT_PARAMETER_FLAG_INTERPOSE 0x0800 // Client expects to open an interpose filter channel 696 #define NECP_CLIENT_PARAMETER_FLAG_PROHIBIT_CONSTRAINED 0x1000 // Prohibit constrained interfaces 697 #define NECP_CLIENT_PARAMETER_FLAG_FALLBACK_TRAFFIC 0x2000 // Fallback traffic 698 #define NECP_CLIENT_PARAMETER_FLAG_INBOUND 0x4000 // Flow is inbound (passive) 699 #define NECP_CLIENT_PARAMETER_FLAG_SYSTEM_PROXY 0x8000 // Flow is a system proxy 700 #define NECP_CLIENT_PARAMETER_FLAG_KNOWN_TRACKER 0x10000 // Flow is contacting a known tracker 701 #define NECP_CLIENT_PARAMETER_FLAG_UNSAFE_SOCKET_ACCESS 0x20000 // Client allows direct access to sockets 702 #define NECP_CLIENT_PARAMETER_FLAG_NON_APP_INITIATED 0x40000 // Networking activities not initiated by application 703 #define NECP_CLIENT_PARAMETER_FLAG_THIRD_PARTY_WEB_CONTENT 0x80000 // Third-party web content, not main load 704 #define NECP_CLIENT_PARAMETER_FLAG_SILENT 0x100000 // Private browsing - do not log/track 705 #define NECP_CLIENT_PARAMETER_FLAG_APPROVED_APP_DOMAIN 0x200000 // Approved associated app domain; domain is "owned" by app 706 #define NECP_CLIENT_PARAMETER_FLAG_NO_WAKE_FROM_SLEEP 0x400000 // Don't wake from sleep on traffic for this client 707 #define NECP_CLIENT_PARAMETER_FLAG_REUSE_LOCAL 0x800000 // Request support for local address/port reuse 708 #define NECP_CLIENT_PARAMETER_FLAG_ENHANCED_PRIVACY 0x1000000 // Attempt protocol upgrade or proxy usage for more privacy 709 #define NECP_CLIENT_PARAMETER_FLAG_WEB_SEARCH_CONTENT 0x2000000 // Web search traffic 710 711 #define NECP_CLIENT_RESULT_CLIENT_ID 1 // uuid_t 712 #define NECP_CLIENT_RESULT_POLICY_RESULT 2 // u_int32_t 713 #define NECP_CLIENT_RESULT_POLICY_RESULT_PARAMETER 3 // u_int32_t 714 #define NECP_CLIENT_RESULT_FILTER_CONTROL_UNIT 4 // u_int32_t 715 #define NECP_CLIENT_RESULT_INTERFACE_INDEX 5 // u_int32_t 716 #define NECP_CLIENT_RESULT_NETAGENT 6 // struct necp_client_result_netagent 717 #define NECP_CLIENT_RESULT_FLAGS 7 // u_int32_t, see NECP_CLIENT_RESULT_FLAG_* values 718 #define NECP_CLIENT_RESULT_INTERFACE 8 // struct necp_client_result_interface 719 #define NECP_CLIENT_RESULT_INTERFACE_OPTION 9 // struct necp_client_interface_option 720 #define NECP_CLIENT_RESULT_EFFECTIVE_MTU 10 // u_int32_t 721 #define NECP_CLIENT_RESULT_FLOW 11 // TLV array of a single flow's state 722 #define NECP_CLIENT_RESULT_PROTO_CTL_EVENT 12 723 #define NECP_CLIENT_RESULT_TFO_COOKIE 13 // NECP_TFO_COOKIE_LEN_MAX 724 #define NECP_CLIENT_RESULT_TFO_FLAGS 14 // u_int8_t 725 #define NECP_CLIENT_RESULT_RECOMMENDED_MSS 15 // u_int8_t 726 #define NECP_CLIENT_RESULT_FLOW_ID 16 // uuid_t 727 #define NECP_CLIENT_RESULT_INTERFACE_TIME_DELTA 17 // u_int32_t, seconds since interface up/down 728 #define NECP_CLIENT_RESULT_REASON 18 // u_int32_t, see NECP_CLIENT_RESULT_REASON_* values 729 #define NECP_CLIENT_RESULT_FLOW_DIVERT_AGGREGATE_UNIT 19 // u_int32_t 730 #define NECP_CLIENT_RESULT_REQUEST_IN_PROCESS_FLOW_DIVERT 20 // Empty 731 732 #define NECP_CLIENT_RESULT_NEXUS_INSTANCE 100 // uuid_t 733 #define NECP_CLIENT_RESULT_NEXUS_PORT 101 // nexus_port_t 734 #define NECP_CLIENT_RESULT_NEXUS_KEY 102 // uuid_t 735 #define NECP_CLIENT_RESULT_NEXUS_PORT_FLOW_INDEX 103 // u_int32_t 736 #define NECP_CLIENT_RESULT_NEXUS_FLOW_STATS 104 // struct sk_stats_flow * 737 738 #define NECP_CLIENT_RESULT_LOCAL_ENDPOINT 200 // struct necp_client_endpoint 739 #define NECP_CLIENT_RESULT_REMOTE_ENDPOINT 201 // struct necp_client_endpoint 740 #define NECP_CLIENT_RESULT_DISCOVERED_ENDPOINT 202 // struct necp_client_endpoint, result of browse 741 #define NECP_CLIENT_RESULT_RESOLVED_ENDPOINT 203 // struct necp_client_endpoint, result of resolve 742 #define NECP_CLIENT_RESULT_LOCAL_ETHER_ADDR 204 // struct ether_addr 743 #define NECP_CLIENT_RESULT_REMOTE_ETHER_ADDR 205 // struct ether_addr 744 #define NECP_CLIENT_RESULT_EFFECTIVE_TRAFFIC_CLASS 210 // u_int32_t 745 #define NECP_CLIENT_RESULT_TRAFFIC_MGMT_BG 211 // u_int32_t, 1: background, 0: not background 746 #define NECP_CLIENT_RESULT_GATEWAY 212 // struct necp_client_endpoint 747 #define NECP_CLIENT_RESULT_GROUP_MEMBER 213 // struct necp_client_endpoint 748 #define NECP_CLIENT_RESULT_NAT64 214 // struct ipv6_prefix[NAT64_MAX_NUM_PREFIXES] 749 #define NECP_CLIENT_RESULT_ESTIMATED_THROUGHPUT 215 // struct necp_client_result_estimated_throughput 750 #define NECP_CLIENT_RESULT_AGENT_ERROR 216 // struct necp_client_result_agent_error 751 752 #define NECP_CLIENT_RESULT_FLAG_IS_LOCAL 0x0001 // Routes to this device 753 #define NECP_CLIENT_RESULT_FLAG_IS_DIRECT 0x0002 // Routes to directly accessible peer 754 #define NECP_CLIENT_RESULT_FLAG_HAS_IPV4 0x0004 // Supports IPv4 755 #define NECP_CLIENT_RESULT_FLAG_HAS_IPV6 0x0008 // Supports IPv6 756 #define NECP_CLIENT_RESULT_FLAG_DEFUNCT 0x0010 // Defunct 757 #define NECP_CLIENT_RESULT_FLAG_SATISFIED 0x0020 // Satisfied path 758 #define NECP_CLIENT_RESULT_FLAG_FLOW_ASSIGNED 0x0040 // Assigned, the flow is active 759 #define NECP_CLIENT_RESULT_FLAG_FLOW_VIABLE 0x0080 // Viable, the flow has a valid route 760 #define NECP_CLIENT_RESULT_FLAG_PROBE_CONNECTIVITY 0x0100 // Flow should probe connectivity 761 #define NECP_CLIENT_RESULT_FLAG_ECN_ENABLED 0x0200 // ECN should be used 762 #define NECP_CLIENT_RESULT_FLAG_FAST_OPEN_BLOCKED 0x0400 // Fast open should not be used 763 #define NECP_CLIENT_RESULT_FLAG_LINK_QUALITY_ABORT 0x0800 // Link quality is very bad, recommend close connections 764 #define NECP_CLIENT_RESULT_FLAG_ALLOW_QOS_MARKING 0x1000 // QoS marking is allowed 765 #define NECP_CLIENT_RESULT_FLAG_HAS_NAT64 0x2000 // Has NAT64 prefix 766 #define NECP_CLIENT_RESULT_FLAG_INTERFACE_LOW_POWER 0x4000 // Interface is in low-power mode 767 #define NECP_CLIENT_RESULT_FLAG_SPECIFIC_LISTENER 0x8000 // Listener should not listen on all interfaces 768 #define NECP_CLIENT_RESULT_FLAG_KEXT_FILTER_PRESENT 0x10000 // Kernel extension filter present 769 #define NECP_CLIENT_RESULT_FLAG_PF_RULES_PRESENT 0x20000 // Firewall rules present 770 #define NECP_CLIENT_RESULT_FLAG_ALF_PRESENT 0x40000 // Application Firewall enabled 771 #define NECP_CLIENT_RESULT_FLAG_PARENTAL_CONTROLS_PRESENT 0x80000 // Parental Controls present 772 #define NECP_CLIENT_RESULT_FLAG_IS_GLOBAL_INTERNET 0x100000 // Routes to global Internet 773 774 775 #define NECP_CLIENT_RESULT_FLAG_FORCE_UPDATE (NECP_CLIENT_RESULT_FLAG_HAS_IPV4 | NECP_CLIENT_RESULT_FLAG_HAS_IPV6 | NECP_CLIENT_RESULT_FLAG_HAS_NAT64 | NECP_CLIENT_RESULT_FLAG_INTERFACE_LOW_POWER) 776 777 #define NECP_CLIENT_RESULT_FAST_OPEN_SND_PROBE 0x01 // DEPRECATED - Fast open send probe 778 #define NECP_CLIENT_RESULT_FAST_OPEN_RCV_PROBE 0x02 // DEPRECATED - Fast open receive probe 779 780 #define NECP_CLIENT_RESULT_RECOMMENDED_MSS_NONE 0x01 781 #define NECP_CLIENT_RESULT_RECOMMENDED_MSS_LOW 0x02 782 #define NECP_CLIENT_RESULT_RECOMMENDED_MSS_MEDIUM 0x04 783 784 #define NECP_CLIENT_RESULT_REASON_EXPENSIVE_PROHIBITED 1 // Expensive networks were prohibited 785 #define NECP_CLIENT_RESULT_REASON_CONSTRAINED_PROHIBITED 2 // Constrained networks were prohibited 786 #define NECP_CLIENT_RESULT_REASON_CELLULAR_DENIED 3 // Denied by a cellular route rule 787 #define NECP_CLIENT_RESULT_REASON_WIFI_DENIED 4 // Denied by a wifi route rule 788 #define NECP_CLIENT_RESULT_REASON_LOCAL_NETWORK_PROHIBITED 5 // Local network access prohibited 789 790 struct necp_interface_signature { 791 u_int8_t signature[IFNET_SIGNATURELEN]; 792 u_int8_t signature_len; 793 }; 794 795 struct necp_interface_details { 796 char name[IFXNAMSIZ]; 797 u_int32_t index; 798 u_int32_t generation; 799 u_int32_t functional_type; 800 u_int32_t delegate_index; 801 u_int32_t flags; // see NECP_INTERFACE_FLAG_* 802 u_int32_t mtu; 803 struct necp_interface_signature ipv4_signature; 804 struct necp_interface_signature ipv6_signature; 805 u_int32_t ipv4_netmask; 806 u_int32_t ipv4_broadcast; 807 /* 808 * This serves as a temporary header guard to protect libnetcore builds 809 * until the xnu changes are available in the build. 810 * XXX: Should be removed in a future build. 811 */ 812 #define NECP_INTERFACE_SUPPORTS_TSO 1 813 u_int32_t tso_max_segment_size_v4; 814 u_int32_t tso_max_segment_size_v6; 815 #define NECP_INTERFACE_SUPPORTS_HWCSUM 1 816 u_int32_t hwcsum_flags; 817 u_int8_t radio_type; 818 u_int8_t radio_channel; 819 }; 820 821 #define NECP_INTERFACE_FLAG_EXPENSIVE 0x0001 822 #define NECP_INTERFACE_FLAG_TXSTART 0X0002 823 #define NECP_INTERFACE_FLAG_NOACKPRI 0x0004 824 #define NECP_INTERFACE_FLAG_3CARRIERAGG 0x0008 825 #define NECP_INTERFACE_FLAG_IS_LOW_POWER 0x0010 826 #define NECP_INTERFACE_FLAG_MPK_LOG 0x0020 // Multi-layer Packet Logging 827 #define NECP_INTERFACE_FLAG_CONSTRAINED 0x0040 828 #define NECP_INTERFACE_FLAG_HAS_NETMASK 0x0080 829 #define NECP_INTERFACE_FLAG_HAS_BROADCAST 0x0100 830 #define NECP_INTERFACE_FLAG_SUPPORTS_MULTICAST 0x0200 831 #define NECP_INTERFACE_FLAG_HAS_DNS 0x0400 832 #define NECP_INTERFACE_FLAG_HAS_NAT64 0x0800 833 #define NECP_INTERFACE_FLAG_IPV4_ROUTABLE 0x1000 834 #define NECP_INTERFACE_FLAG_IPV6_ROUTABLE 0x2000 835 836 struct necp_client_parameter_netagent_type { 837 char netagent_domain[32]; 838 char netagent_type[32]; 839 }; 840 841 struct necp_client_result_netagent { 842 u_int32_t generation; 843 uuid_t netagent_uuid; 844 }; 845 846 struct necp_client_result_interface { 847 u_int32_t generation; 848 u_int32_t index; 849 }; 850 851 struct necp_client_result_estimated_throughput { 852 u_int8_t up; 853 u_int8_t down; 854 }; 855 856 struct necp_client_result_agent_error { 857 u_int32_t code; 858 u_int8_t domain; 859 }; 860 861 #define NECP_USES_INTERFACE_OPTIONS_FOR_BROWSE 1 862 863 struct necp_client_interface_option { 864 u_int32_t interface_index; 865 u_int32_t interface_generation; 866 uuid_t nexus_agent; 867 }; 868 869 #define NECP_CLIENT_ENDPOINT_TYPE_APPLICATION_SERVICE 6 870 871 struct necp_client_endpoint { 872 union { 873 struct sockaddr sa; 874 struct sockaddr_in sin; 875 struct sockaddr_in6 sin6; 876 struct { 877 u_int8_t endpoint_length; 878 u_int8_t endpoint_family; // Use AF_UNSPEC to target a name 879 u_int16_t endpoint_port; 880 u_int32_t endpoint_type; // Client-specific type 881 char endpoint_data[0]; // Type-specific endpoint value 882 } endpoint; 883 } u; 884 }; 885 886 struct necp_client_group { 887 u_int32_t group_type; 888 uuid_t group_id; 889 }; 890 891 struct necp_client_list { 892 u_int32_t client_count; 893 uuid_t clients[0]; 894 }; 895 896 struct kev_necp_policies_changed_data { 897 u_int32_t changed_count; // Defaults to 0. 898 }; 899 900 #define NECP_CLIENT_FLOW_FLAGS_ALLOW_NEXUS 0x01 // Request a nexus instance upon adding a flow 901 #define NECP_CLIENT_FLOW_FLAGS_USE_CLIENT_ID 0x02 // Register the client ID rather than the flow registration ID with network agents 902 #define NECP_CLIENT_FLOW_FLAGS_BROWSE 0x04 // Create request with a browse agent 903 #define NECP_CLIENT_FLOW_FLAGS_RESOLVE 0x08 // Create request with a resolution agent 904 #define NECP_CLIENT_FLOW_FLAGS_OVERRIDE_ADDRESS 0x10 // Flow has a different remote address than the parent flow 905 #define NECP_CLIENT_FLOW_FLAGS_OVERRIDE_IP_PROTOCOL 0x20 // Flow has a different IP protocol than the parent flow 906 907 struct necp_client_flow_stats { 908 u_int32_t stats_type; // NECP_CLIENT_STATISTICS_TYPE_* 909 u_int32_t stats_version; // NECP_CLIENT_STATISTICS_TYPE_*_VER 910 u_int32_t stats_size; 911 mach_vm_address_t stats_addr; 912 }; 913 914 struct necp_client_add_flow { 915 uuid_t agent_uuid; 916 uuid_t registration_id; 917 u_int16_t flags; // NECP_CLIENT_FLOW_FLAGS_* 918 u_int16_t stats_request_count; 919 struct necp_client_flow_stats stats_requests[0]; 920 // sockaddr for override endpoint 921 // uint8 for override ip protocol 922 } __attribute__((__packed__)); 923 924 struct necp_agent_use_parameters { 925 uuid_t agent_uuid; 926 uint64_t out_use_count; 927 }; 928 929 struct necp_client_group_action { 930 uuid_t agent_uuid; 931 u_int16_t group_member_count; 932 struct necp_client_endpoint group_members[0]; 933 } __attribute__((__packed__)); 934 935 struct necp_client_flow_protoctl_event { 936 uint32_t protoctl_event_code; 937 uint32_t protoctl_event_val; 938 /* TCP seq number is in host byte order */ 939 uint32_t protoctl_event_tcp_seq_num; 940 }; 941 942 #define NECP_CLIENT_UPDATE_TYPE_PARAMETERS 1 // Parameters, for a new client 943 #define NECP_CLIENT_UPDATE_TYPE_RESULT 2 // Result, for a udpated client 944 #define NECP_CLIENT_UPDATE_TYPE_REMOVE 3 // Empty, for a removed client 945 946 struct necp_client_observer_update { 947 u_int32_t update_type; // NECP_CLIENT_UPDATE_TYPE_* 948 u_int8_t tlv_buffer[0]; // Parameters or result as TLVs, based on type 949 }; 950 951 // These sign types are tied to specific clients. 952 // The client_id UUID is then the NECP client UUID that generated the query. 953 #define NECP_CLIENT_SIGN_TYPE_RESOLVER_ANSWER 1 // struct necp_client_host_resolver_answer 954 #define NECP_CLIENT_SIGN_TYPE_BROWSE_RESULT 2 // struct necp_client_browse_result 955 #define NECP_CLIENT_SIGN_TYPE_SERVICE_RESOLVER_ANSWER 3 // struct necp_client_service_resolver_answer 956 957 // These sign types are valid for system-wide use. 958 // The client_id UUID is a unique per-query UUID. 959 // These should be generated only on behalf of trusted or entitled processes. 960 #define NECP_CLIENT_SIGN_TYPE_SYSTEM_RESOLVER_ANSWER 4 // struct necp_client_host_resolver_answer 961 #define NECP_CLIENT_SIGN_TYPE_SYSTEM_BROWSE_RESULT 5 // struct necp_client_browse_result 962 #define NECP_CLIENT_SIGN_TYPE_SYSTEM_SERVICE_RESOLVER_ANSWER 6 // struct necp_client_service_resolver_answer 963 964 struct necp_client_signature { 965 u_int8_t signed_tag[32]; 966 } __attribute__((__packed__)); 967 968 // 969 struct necp_client_signable { 970 uuid_t client_id; // Interpretation depends on sign_type 971 u_int32_t sign_type; 972 u_int8_t signable_data[0]; 973 } __attribute__((__packed__)); 974 975 struct necp_client_resolver_answer { 976 uuid_t client_id; 977 u_int32_t sign_type; 978 union sockaddr_in_4_6 address_answer; // Can include port 979 u_int32_t hostname_length; 980 char hostname[0]; 981 } __attribute__((__packed__)); 982 983 struct necp_client_host_resolver_answer { 984 struct necp_client_signable header; 985 u_int32_t metadata_hash; // Extra metadata that can be signed along with the answer, such as a network signature. 986 union sockaddr_in_4_6 address_answer; // Can include port 987 u_int32_t hostname_length; 988 char hostname[0]; 989 } __attribute__((__packed__)); 990 991 struct necp_client_browse_result { 992 struct necp_client_signable header; 993 u_int32_t metadata_hash; // Extra metadata that can be signed along with the service, which may include a TXT record or a network signature 994 u_int16_t service_length; 995 char service[0]; 996 } __attribute__((__packed__)); 997 998 struct necp_client_service_resolver_answer { 999 struct necp_client_signable header; 1000 u_int32_t metadata_hash; // Extra metadata that can be signed along with the service, which may include a TXT record or a network signature 1001 u_int16_t service_length; 1002 u_int16_t port; 1003 u_int16_t hostname_length; 1004 char service[0]; 1005 char hostname[0]; 1006 } __attribute__((__packed__)); 1007 1008 struct necp_client_validatable { 1009 struct necp_client_signature signature; 1010 struct necp_client_signable signable; 1011 } __attribute__((__packed__)); 1012 1013 #define NECP_CLIENT_ACTION_SIGN_MAX_STRING_LENGTH 1024 1014 1015 #define NECP_CLIENT_ACTION_SIGN_TAG_LENGTH 32 1016 1017 #define NECP_CLIENT_ACTION_SIGN_DEFAULT_DATA_LENGTH 128 1018 #define NECP_CLIENT_ACTION_SIGN_MAX_TOTAL_LENGTH 4096 1019 1020 #define NECP_FILTER_UNIT_NO_FILTER UINT32_MAX // Reserved filter unit value that prohibits all filters and socket filters 1021 1022 // Type of signed client ID requests. 1023 #define NECP_CLIENT_SIGNED_CLIENT_ID_TYPE_UUID 1 // struct necp_client_signed_client_id_uuid 1024 1025 struct necp_client_signed_client_id_uuid { 1026 uuid_t client_id; 1027 u_int32_t signature_length; 1028 u_int8_t signature_data[NECP_CLIENT_ACTION_SIGN_TAG_LENGTH]; 1029 } __attribute__((__packed__)); 1030 1031 /* 1032 * The sysctl "net.necp.necp_drop_dest_level" controls the global drop rule policy for 1033 * a set of destinations addresses at the given level -- the drop rule is the last one 1034 * to be evaluated at this level. 1035 */ 1036 #define MAX_NECP_DROP_DEST_LEVEL_ADDRS 8 1037 1038 struct necp_drop_dest_entry { 1039 u_int32_t level; // priority level 1040 u_int32_t order; // session order (read only via sysctl) 1041 struct necp_policy_condition_addr cond_addr; 1042 }; 1043 1044 struct necp_drop_dest_policy { 1045 u_int32_t entry_count; 1046 struct necp_drop_dest_entry entries[MAX_NECP_DROP_DEST_LEVEL_ADDRS]; 1047 }; 1048 1049 1050 #define NECP_DEMUX_MAX_LEN 32 1051 struct necp_demux_pattern { 1052 uint16_t offset; 1053 uint16_t len; 1054 uint8_t mask[NECP_DEMUX_MAX_LEN]; 1055 uint8_t value[NECP_DEMUX_MAX_LEN]; 1056 }; 1057 1058 #ifdef BSD_KERNEL_PRIVATE 1059 #include <stdbool.h> 1060 #include <sys/socketvar.h> 1061 #include <sys/kern_control.h> 1062 #include <netinet/ip_var.h> 1063 #include <netinet6/ip6_var.h> 1064 #include <net/if_var.h> 1065 #include <sys/syslog.h> 1066 #include <net/network_agent.h> 1067 #include <net/ethernet.h> 1068 #include <os/log.h> 1069 #if SKYWALK 1070 #include <skywalk/namespace/netns.h> 1071 #endif /* SKYWALK */ 1072 1073 1074 SYSCTL_DECL(_net_necp); 1075 1076 extern os_log_t necp_log_handle; 1077 extern os_log_t necp_data_trace_log_handle; 1078 1079 #define NECPLOG(level, format, ...) do { \ 1080 if (level == LOG_ERR) { \ 1081 os_log_error(necp_log_handle, "%s: " format "\n", __FUNCTION__, __VA_ARGS__); \ 1082 } else { \ 1083 os_log(necp_log_handle, "%s: " format "\n", __FUNCTION__, __VA_ARGS__); \ 1084 } \ 1085 } while (0) 1086 1087 #define NECPLOG0(level, msg) do { \ 1088 if (level == LOG_ERR) { \ 1089 os_log_error(necp_log_handle, "%s: %s\n", __FUNCTION__, msg); \ 1090 } else { \ 1091 os_log(necp_log_handle, "%s: %s\n", __FUNCTION__, msg); \ 1092 } \ 1093 } while (0) 1094 1095 #define NECPDATATRACELOG(level, format, ...) do { \ 1096 if (level == LOG_ERR) { \ 1097 os_log_error(necp_data_trace_log_handle, "%s: " format "\n", __FUNCTION__, __VA_ARGS__); \ 1098 } else { \ 1099 os_log(necp_data_trace_log_handle, "%s: " format "\n", __FUNCTION__, __VA_ARGS__); \ 1100 } \ 1101 } while (0) 1102 1103 enum necp_fd_type_t { 1104 necp_fd_type_invalid = 0, 1105 necp_fd_type_session = 1, 1106 necp_fd_type_client = 2, 1107 }; 1108 1109 union necp_sockaddr_union { 1110 #if !__has_ptrcheck 1111 struct sockaddr sa; 1112 #endif 1113 struct __sockaddr_header sah; 1114 struct sockaddr_in sin; 1115 struct sockaddr_in6 sin6; 1116 }; 1117 1118 /* 1119 * kstats 1120 * The ustats and kstats region are mirrored. So when we allocate with 1121 * skmem_cache from kstats region, we also get an ustats object. To tie them 1122 * together, kstats has an extra *necp_stats_ustats pointer pointing to the 1123 * ustats object 1124 */ 1125 struct necp_all_kstats { 1126 struct necp_all_stats necp_stats_comm; /* kernel private stats snapshot */ 1127 struct necp_all_stats *necp_stats_ustats; /* points to user-visible stats (in shared ustats region) */ 1128 }; 1129 1130 extern void necp_client_init(void); 1131 extern int necp_application_find_policy_match_internal(proc_t proc, u_int8_t *parameters, u_int32_t parameters_size, 1132 struct necp_aggregate_result *returned_result, 1133 u_int32_t *flags, u_int32_t *reason, u_int required_interface_index, 1134 const union necp_sockaddr_union *override_local_addr, 1135 const union necp_sockaddr_union *override_remote_addr, 1136 struct necp_client_endpoint *returned_v4_gateway, 1137 struct necp_client_endpoint *returned_v6_gateway, 1138 struct rtentry **returned_route, bool ignore_address, 1139 bool has_client, 1140 uuid_t *returned_override_euuid); 1141 /* 1142 * TLV utilities 1143 * 1144 * Note that these functions (other than necp_buffer_find_tlv) do not check the length of the entire buffer, 1145 * so the caller must be sure that the entire TLV is within bounds. 1146 */ 1147 struct necp_tlv_header { 1148 u_int8_t type; 1149 u_int32_t length; 1150 } __attribute__((__packed__)); 1151 1152 extern u_int8_t *necp_buffer_write_tlv(u_int8_t *cursor, u_int8_t type, u_int32_t length, const void *value, 1153 u_int8_t *buffer, u_int32_t buffer_length); 1154 extern u_int8_t *necp_buffer_write_tlv_if_different(u_int8_t *cursor, u_int8_t type, 1155 u_int32_t length, const void *value, bool *updated, 1156 u_int8_t *buffer, u_int32_t buffer_length); 1157 extern u_int8_t necp_buffer_get_tlv_type(u_int8_t *buffer, int tlv_offset); 1158 extern u_int32_t necp_buffer_get_tlv_length(u_int8_t *buffer, int tlv_offset); 1159 extern u_int8_t *necp_buffer_get_tlv_value(u_int8_t *buffer, int tlv_offset, u_int32_t *value_size); 1160 extern int necp_buffer_find_tlv(u_int8_t *buffer, u_int32_t buffer_length, int offset, u_int8_t type, int *err, int next); 1161 1162 #define NECPCTL_DROP_ALL_LEVEL 1 /* Drop all packets if no policy matches above this level */ 1163 #define NECPCTL_DEBUG 2 /* Log all kernel policy matches */ 1164 #define NECPCTL_PASS_LOOPBACK 3 /* Pass all loopback traffic */ 1165 #define NECPCTL_PASS_KEEPALIVES 4 /* Pass all kernel-generated keepalive traffic */ 1166 #define NECPCTL_SOCKET_POLICY_COUNT 5 /* Count of all socket-level policies */ 1167 #define NECPCTL_SOCKET_NON_APP_POLICY_COUNT 6 /* Count of non-per-app socket-level policies */ 1168 #define NECPCTL_IP_POLICY_COUNT 7 /* Count of all ip-level policies */ 1169 #define NECPCTL_SESSION_COUNT 8 /* Count of NECP sessions */ 1170 #define NECPCTL_CLIENT_FD_COUNT 9 /* Count of NECP client fds */ 1171 #define NECPCTL_CLIENT_COUNT 10 /* Count of NECP clients */ 1172 #define NECPCTL_ARENA_COUNT 11 /* Count of NECP arenas (stats, etc) */ 1173 #define NECPCTL_NEXUS_FLOW_COUNT 12 /* Count of NECP nexus flows */ 1174 #define NECPCTL_SOCKET_FLOW_COUNT 13 /* Count of NECP socket flows */ 1175 #define NECPCTL_IF_FLOW_COUNT 14 /* Count of NECP socket flows */ 1176 #define NECPCTL_OBSERVER_FD_COUNT 15 /* Count of NECP observer fds */ 1177 #define NECPCTL_OBSERVER_MESSAGE_LIMIT 16 /* Number of of NECP observer messages allowed to be queued */ 1178 #define NECPCTL_SYSCTL_ARENA_COUNT 17 /* Count of sysctl arenas */ 1179 #define NECPCTL_DROP_UNENTITLED_LEVEL 18 /* Drop unentitled process traffic above this level */ 1180 #define NECPCTL_PASS_INTERPOSE 19 /* Pass interpose */ 1181 #define NECPCTL_RESTRICT_MULTICAST 20 /* Restrict multicast access */ 1182 #define NECPCTL_DEDUP_POLICIES 21 /* Dedup overlapping policies */ 1183 #define NECPCTL_CLIENT_TRACING_LEVEL 22 /* Client tracing level */ 1184 #define NECPCTL_CLIENT_TRACING_PID 23 /* Apply client tracing only to specified pid */ 1185 #define NECPCTL_DROP_MANAGEMENT_LEVEL 24 /* Drop management traffic at this level */ 1186 1187 #define NECP_LOOPBACK_PASS_ALL 1 // Pass all loopback traffic 1188 #define NECP_LOOPBACK_PASS_WITH_FILTER 2 // Pass all loopback traffic, but activate content filter and/or flow divert if applicable 1189 1190 #define NECPCTL_NAMES { \ 1191 { 0, 0 }, \ 1192 { "drop_all_level", CTLTYPE_INT }, \ 1193 { "debug", CTLTYPE_INT }, \ 1194 { "pass_loopback", CTLTYPE_INT }, \ 1195 { "pass_keepalives", CTLTYPE_INT }, \ 1196 { "pass_interpose", CTLTYPE_INT }, \ 1197 } 1198 1199 typedef u_int32_t necp_kernel_policy_id; 1200 #define NECP_KERNEL_POLICY_ID_NONE 0 1201 #define NECP_KERNEL_POLICY_ID_NO_MATCH 1 1202 #define NECP_KERNEL_POLICY_ID_FIRST_VALID_SOCKET 2 1203 #define NECP_KERNEL_POLICY_ID_FIRST_VALID_IP UINT16_MAX 1204 1205 typedef u_int32_t necp_app_id; 1206 1207 #define NECP_KERNEL_POLICY_RESULT_NONE 0 1208 #define NECP_KERNEL_POLICY_RESULT_PASS NECP_POLICY_RESULT_PASS 1209 #define NECP_KERNEL_POLICY_RESULT_SKIP NECP_POLICY_RESULT_SKIP 1210 #define NECP_KERNEL_POLICY_RESULT_DROP NECP_POLICY_RESULT_DROP 1211 #define NECP_KERNEL_POLICY_RESULT_SOCKET_DIVERT NECP_POLICY_RESULT_SOCKET_DIVERT 1212 #define NECP_KERNEL_POLICY_RESULT_SOCKET_FILTER NECP_POLICY_RESULT_SOCKET_FILTER 1213 #define NECP_KERNEL_POLICY_RESULT_IP_TUNNEL NECP_POLICY_RESULT_IP_TUNNEL 1214 #define NECP_KERNEL_POLICY_RESULT_IP_FILTER NECP_POLICY_RESULT_IP_FILTER 1215 #define NECP_KERNEL_POLICY_RESULT_SOCKET_SCOPED NECP_POLICY_RESULT_SOCKET_SCOPED 1216 #define NECP_KERNEL_POLICY_RESULT_ROUTE_RULES NECP_POLICY_RESULT_ROUTE_RULES 1217 #define NECP_KERNEL_POLICY_RESULT_USE_NETAGENT NECP_POLICY_RESULT_USE_NETAGENT 1218 #define NECP_KERNEL_POLICY_RESULT_NETAGENT_SCOPED NECP_POLICY_RESULT_NETAGENT_SCOPED 1219 #define NECP_KERNEL_POLICY_RESULT_SCOPED_DIRECT NECP_POLICY_RESULT_SCOPED_DIRECT 1220 #define NECP_KERNEL_POLICY_RESULT_ALLOW_UNENTITLED NECP_POLICY_RESULT_ALLOW_UNENTITLED 1221 #define NECP_KERNEL_POLICY_RESULT_REMOVE_NETAGENT NECP_POLICY_RESULT_REMOVE_NETAGENT 1222 1223 #define NECP_KERNEL_POLICY_PASS_NO_SKIP_IPSEC NECP_POLICY_PASS_NO_SKIP_IPSEC 1224 #define NECP_KERNEL_POLICY_PASS_PF_TAG NECP_POLICY_PASS_PF_TAG 1225 1226 #define NECP_KERNEL_POLICY_DROP_FLAG_LOCAL_NETWORK NECP_POLICY_DROP_FLAG_LOCAL_NETWORK 1227 #define NECP_KERNEL_POLICY_DROP_FLAG_SUPPRESS_ALERTS NECP_POLICY_DROP_FLAG_SUPPRESS_ALERTS 1228 1229 typedef struct { 1230 u_int32_t identifier; 1231 u_int32_t data; 1232 } necp_kernel_policy_service; 1233 1234 typedef union { 1235 u_int tunnel_interface_index; 1236 u_int scoped_interface_index; 1237 u_int32_t flow_divert_control_unit; 1238 u_int32_t filter_control_unit; 1239 u_int32_t skip_policy_order; 1240 u_int32_t route_rule_id; 1241 u_int32_t netagent_id; 1242 u_int32_t pass_flags; 1243 u_int32_t drop_flags; 1244 necp_kernel_policy_service service; 1245 } necp_kernel_policy_result_parameter; 1246 1247 enum necp_boolean_state { 1248 necp_boolean_state_unknown = 0, 1249 necp_boolean_state_false = 1, 1250 necp_boolean_state_true = 2, 1251 }; 1252 1253 struct necp_kernel_socket_policy { 1254 LIST_ENTRY(necp_kernel_socket_policy) chain; 1255 necp_kernel_policy_id id; 1256 necp_policy_order order; 1257 u_int32_t session_order; 1258 int session_pid; 1259 1260 u_int64_t condition_mask; 1261 u_int64_t condition_negated_mask; 1262 u_int32_t cond_client_flags; 1263 necp_kernel_policy_id cond_policy_id; 1264 u_int32_t cond_app_id; // Locally assigned ID value stored 1265 u_int32_t cond_real_app_id; // Locally assigned ID value stored 1266 char *cond_custom_entitlement; // String 1267 u_int32_t cond_account_id; // Locally assigned ID value stored 1268 char *cond_domain; // String 1269 u_int8_t cond_domain_dot_count; // Number of dots in cond_domain 1270 u_int32_t cond_domain_filter; 1271 pid_t cond_pid; 1272 uid_t cond_uid; 1273 uid_t cond_real_uid; 1274 ifnet_t cond_bound_interface; // Matches specific binding only 1275 struct necp_policy_condition_tc_range cond_traffic_class; // Matches traffic class in range 1276 u_int16_t cond_protocol; // Matches IP protcol number 1277 union necp_sockaddr_union cond_local_start; // Matches local IP address (or start) 1278 union necp_sockaddr_union cond_local_end; // Matches IP address range 1279 u_int8_t cond_local_prefix; // Defines subnet 1280 union necp_sockaddr_union cond_remote_start; // Matches remote IP address (or start) 1281 union necp_sockaddr_union cond_remote_end; // Matches IP address range 1282 u_int8_t cond_remote_prefix; // Defines subnet 1283 struct necp_policy_condition_agent_type cond_agent_type; 1284 struct necp_policy_condition_sdk_version cond_sdk_version; 1285 char *cond_signing_identifier; // String 1286 char *cond_url;// String 1287 u_int16_t cond_packet_filter_tags; 1288 u_int16_t cond_scheme_port; 1289 int32_t cond_pid_version; 1290 u_int32_t cond_bound_interface_flags; 1291 u_int32_t cond_bound_interface_eflags; 1292 u_int32_t cond_bound_interface_xflags; 1293 1294 necp_kernel_policy_result result; 1295 necp_kernel_policy_result_parameter result_parameter; 1296 }; 1297 1298 struct necp_kernel_ip_output_policy { 1299 LIST_ENTRY(necp_kernel_ip_output_policy) chain; 1300 necp_kernel_policy_id id; 1301 necp_policy_order suborder; 1302 necp_policy_order order; 1303 u_int32_t session_order; 1304 int session_pid; 1305 1306 u_int64_t condition_mask; 1307 u_int64_t condition_negated_mask; 1308 necp_kernel_policy_id cond_policy_id; 1309 ifnet_t cond_bound_interface; // Matches specific binding only 1310 u_int16_t cond_protocol; // Matches IP protcol number 1311 union necp_sockaddr_union cond_local_start; // Matches local IP address (or start) 1312 union necp_sockaddr_union cond_local_end; // Matches IP address range 1313 u_int8_t cond_local_prefix; // Defines subnet 1314 union necp_sockaddr_union cond_remote_start; // Matches remote IP address (or start) 1315 union necp_sockaddr_union cond_remote_end; // Matches IP address range 1316 u_int8_t cond_remote_prefix; // Defines subnet 1317 u_int32_t cond_last_interface_index; 1318 u_int16_t cond_packet_filter_tags; 1319 u_int16_t cond_scheme_port; 1320 u_int32_t cond_bound_interface_flags; 1321 u_int32_t cond_bound_interface_eflags; 1322 u_int32_t cond_bound_interface_xflags; 1323 1324 necp_kernel_policy_result result; 1325 necp_kernel_policy_result_parameter result_parameter; 1326 }; 1327 1328 #define MAX_KERNEL_SOCKET_POLICIES 1 1329 #define MAX_KERNEL_IP_OUTPUT_POLICIES 4 1330 struct necp_session_policy { 1331 LIST_ENTRY(necp_session_policy) chain; 1332 bool applied; // Applied into the kernel table 1333 bool pending_deletion; // Waiting to be removed from kernel table 1334 bool pending_update; // Policy has been modified since creation/last application 1335 necp_policy_id local_id; 1336 necp_policy_order order; 1337 u_int8_t *result; 1338 u_int32_t result_size; 1339 u_int8_t *conditions; // Array of conditions, each with a u_int32_t length at start 1340 u_int32_t conditions_size; 1341 u_int8_t *route_rules; // Array of route rules, each with a u_int32_t length at start 1342 u_int32_t route_rules_size; 1343 1344 uuid_t applied_app_uuid; 1345 uuid_t applied_real_app_uuid; 1346 char *applied_account; 1347 u_int32_t applied_account_size; 1348 1349 uuid_t applied_result_uuid; 1350 1351 u_int32_t applied_route_rules_id; 1352 1353 necp_kernel_policy_id kernel_socket_policies[MAX_KERNEL_SOCKET_POLICIES]; 1354 necp_kernel_policy_id kernel_ip_output_policies[MAX_KERNEL_IP_OUTPUT_POLICIES]; 1355 }; 1356 1357 struct necp_aggregate_socket_result { 1358 necp_kernel_policy_result result; 1359 necp_kernel_policy_result_parameter result_parameter; 1360 necp_kernel_policy_filter filter_control_unit; 1361 u_int32_t flow_divert_aggregate_unit; 1362 u_int32_t route_rule_id; 1363 int32_t qos_marking_gencount; 1364 }; 1365 1366 struct necp_inpcb_result { 1367 u_int32_t app_id; 1368 necp_kernel_policy_id policy_id; 1369 necp_kernel_policy_id skip_policy_id; 1370 int32_t policy_gencount; 1371 u_int32_t flowhash; 1372 u_int32_t network_denied_notifies;// Notification count 1373 struct necp_aggregate_socket_result results; 1374 }; 1375 1376 extern void necp_init(void); 1377 1378 struct inp_necp_attributes; 1379 extern errno_t necp_set_socket_attributes(struct inp_necp_attributes *attributes, struct sockopt *sopt); 1380 extern errno_t necp_get_socket_attributes(struct inp_necp_attributes *attributes, struct sockopt *sopt); 1381 extern errno_t necp_set_socket_domain_attributes(struct socket *so, const char *domain, const char *domain_owner); 1382 extern int necp_set_socket_resolver_signature(struct inpcb *inp, struct sockopt *sopt); 1383 extern int necp_get_socket_resolver_signature(struct inpcb *inp, struct sockopt *sopt); 1384 extern bool necp_socket_has_resolver_signature(struct inpcb *inp); 1385 extern bool necp_socket_resolver_signature_matches_address(struct inpcb *inp, union necp_sockaddr_union *address); 1386 extern void necp_inpcb_remove_cb(struct inpcb *inp); 1387 extern void necp_inpcb_dispose(struct inpcb *inp); 1388 1389 extern u_int32_t necp_socket_get_content_filter_control_unit(struct socket *so); 1390 1391 extern bool necp_socket_should_use_flow_divert(struct inpcb *inp); 1392 extern u_int32_t necp_socket_get_flow_divert_control_unit(struct inpcb *inp, uint32_t *aggregate_unit); 1393 1394 extern bool necp_socket_should_rescope(struct inpcb *inp); 1395 extern u_int necp_socket_get_rescope_if_index(struct inpcb *inp); 1396 extern u_int32_t necp_socket_get_effective_mtu(struct inpcb *inp, u_int32_t current_mtu); 1397 1398 extern bool necp_socket_is_allowed_to_recv_on_interface(struct inpcb *inp, ifnet_t interface); 1399 1400 extern bool necp_socket_is_allowed_to_send_recv(struct inpcb *inp, ifnet_t input_interface, u_int16_t pf_tag, 1401 necp_kernel_policy_id *return_policy_id, 1402 u_int32_t *return_route_rule_id, 1403 necp_kernel_policy_id *return_skip_policy_id, u_int32_t *return_pass_flags); 1404 extern bool necp_socket_is_allowed_to_send_recv_v4(struct inpcb *inp, u_int16_t local_port, 1405 u_int16_t remote_port, struct in_addr *local_addr, 1406 struct in_addr *remote_addr, ifnet_t input_interface, u_int16_t pf_tag, 1407 necp_kernel_policy_id *return_policy_id, u_int32_t *return_route_rule_id, 1408 necp_kernel_policy_id *return_skip_policy_id, u_int32_t *return_pass_flags); 1409 extern bool necp_socket_is_allowed_to_send_recv_v6(struct inpcb *inp, u_int16_t local_port, 1410 u_int16_t remote_port, struct in6_addr *local_addr, 1411 struct in6_addr *remote_addr, ifnet_t input_interface, u_int16_t pf_tag, 1412 necp_kernel_policy_id *return_policy_id, u_int32_t *return_route_rule_id, 1413 necp_kernel_policy_id *return_skip_policy_id, u_int32_t *return_pass_flags); 1414 extern void necp_socket_update_qos_marking(struct inpcb *inp, struct rtentry *route, u_int32_t route_rule_id); 1415 extern bool necp_lookup_current_qos_marking(int32_t *qos_marking_gencount, struct rtentry *route, struct ifnet *interface, u_int32_t route_rule_id, bool old_qos_marking); 1416 extern int necp_mark_packet_from_socket(struct mbuf *packet, struct inpcb *inp, necp_kernel_policy_id policy_id, 1417 u_int32_t route_rule_id, necp_kernel_policy_id skip_policy_id, u_int32_t pass_flags); 1418 extern necp_kernel_policy_id necp_get_policy_id_from_packet(struct mbuf *packet); 1419 extern necp_kernel_policy_id necp_get_skip_policy_id_from_packet(struct mbuf *packet); 1420 extern u_int16_t necp_get_packet_filter_tags_from_packet(struct mbuf *packet); 1421 extern bool necp_packet_should_skip_filters(struct mbuf *packet); 1422 extern u_int32_t necp_get_last_interface_index_from_packet(struct mbuf *packet); 1423 extern u_int32_t necp_get_route_rule_id_from_packet(struct mbuf *packet); 1424 extern int necp_get_app_uuid_from_packet(struct mbuf *packet, 1425 uuid_t app_uuid); 1426 1427 extern necp_kernel_policy_id necp_socket_find_policy_match(struct inpcb *inp, struct sockaddr *override_local_addr, 1428 struct sockaddr *override_remote_addr, u_int32_t override_bound_interface); 1429 extern necp_kernel_policy_id necp_ip_output_find_policy_match(struct mbuf *packet, int flags, struct ip_out_args *ipoa, 1430 struct rtentry *rt, 1431 necp_kernel_policy_result *result, 1432 necp_kernel_policy_result_parameter *result_parameter); 1433 extern necp_kernel_policy_id necp_ip6_output_find_policy_match(struct mbuf *packet, int flags, struct ip6_out_args *ip6oa, 1434 struct rtentry *rt, 1435 necp_kernel_policy_result *result, 1436 necp_kernel_policy_result_parameter *result_parameter); 1437 1438 extern int necp_mark_packet_from_ip(struct mbuf *packet, necp_kernel_policy_id policy_id); 1439 extern int necp_mark_packet_from_ip_with_skip(struct mbuf *packet, necp_kernel_policy_id policy_id, necp_kernel_policy_id skip_policy_id); 1440 extern int necp_mark_packet_from_interface(struct mbuf *packet, ifnet_t interface); 1441 1442 extern ifnet_t necp_get_ifnet_from_result_parameter(necp_kernel_policy_result_parameter *result_parameter); 1443 extern bool necp_packet_can_rebind_to_ifnet(struct mbuf *packet, struct ifnet *interface, struct route *new_route, int family); 1444 1445 extern bool necp_packet_is_allowed_over_interface(struct mbuf *packet, struct ifnet *interface); 1446 1447 extern int necp_mark_packet_as_keepalive(struct mbuf *packet, bool is_keepalive); 1448 extern bool necp_get_is_keepalive_from_packet(struct mbuf *packet); 1449 1450 extern int necp_sign_resolver_answer(uuid_t client_id, u_int32_t sign_type, 1451 u_int8_t *data, size_t data_length, 1452 u_int8_t *tag, size_t *out_tag_length); 1453 1454 extern bool necp_validate_resolver_answer(uuid_t client_id, u_int32_t sign_type, 1455 u_int8_t *data, size_t data_length, 1456 u_int8_t *tag, size_t tag_length); 1457 1458 extern int necp_sign_application_id(uuid_t client_id, u_int32_t sign_type, 1459 u_int8_t *tag, size_t *out_tag_length); 1460 1461 extern bool necp_validate_application_id(uuid_t client_id, u_int32_t sign_type, 1462 u_int8_t *tag, size_t tag_length); 1463 1464 extern void necp_update_all_clients(void); // Handle general re-evaluate event 1465 extern void necp_update_all_clients_immediately_if_needed(bool should_update_immediately); // Handle general re-evaluate event 1466 1467 extern void necp_force_update_client(uuid_t client_id, uuid_t remove_netagent_uuid, u_int32_t agent_generation); // Cause a single client to get an update event 1468 1469 extern bool necp_set_client_as_background(proc_t proc, struct fileproc *fp, bool background); // Set all clients for an fp as background or not 1470 1471 struct necp_fd_data; 1472 extern void necp_fd_memstatus(proc_t proc, uint32_t status, struct necp_fd_data *client_fd); // Purge memory of clients for the process 1473 extern void necp_fd_defunct(proc_t proc, struct necp_fd_data *client_fd); // Set all clients for an process as defunct 1474 1475 extern void necp_client_request_in_process_flow_divert(pid_t pid); 1476 1477 extern int necp_client_register_socket_flow(pid_t pid, uuid_t client_id, struct inpcb *inp); 1478 1479 extern int necp_client_register_socket_listener(pid_t pid, uuid_t client_id, struct inpcb *inp); 1480 1481 #if SKYWALK 1482 extern int necp_client_get_netns_flow_info(uuid_t client_id, struct ns_flow_info *flow_info); 1483 #endif /* SKYWALK */ 1484 1485 extern int necp_client_assert_bb_radio_manager(uuid_t client_id, bool assert); 1486 1487 extern int necp_client_assign_from_socket(pid_t pid, uuid_t client_id, struct inpcb *inp); 1488 1489 extern int necp_assign_client_result(uuid_t netagent_uuid, uuid_t client_id, 1490 u_int8_t *assigned_results, size_t assigned_results_length); 1491 extern int necp_assign_client_group_members(uuid_t netagent_uuid, uuid_t client_id, 1492 u_int8_t *assigned_group_members, size_t assigned_group_members_length); 1493 1494 struct skmem_obj_info; // forward declaration 1495 extern int necp_stats_ctor(struct skmem_obj_info *oi, struct skmem_obj_info *oim, void *arg, uint32_t skmflag); 1496 extern int necp_stats_dtor(void *addr, void *arg); 1497 1498 /* value to denote invalid flow advisory index */ 1499 struct netagent_session; 1500 extern int 1501 necp_update_flow_protoctl_event(uuid_t netagent_uuid, uuid_t client_id, 1502 uint32_t protoctl_event_code, uint32_t protoctl_event_val, 1503 uint32_t protoctl_event_tcp_seq_num); 1504 1505 #define NECP_FLOWADV_IDX_INVALID UINT32_MAX 1506 extern void *necp_create_nexus_assign_message(uuid_t nexus_instance, nexus_port_t nexus_port, void *key, uint32_t key_length, 1507 struct necp_client_endpoint *local_endpoint, struct necp_client_endpoint *remote_endpoint, 1508 struct ether_addr *local_ether_addr, 1509 u_int32_t flow_adv_index, void *flow_stats, size_t *message_length); 1510 1511 1512 #define NECP_MAX_DEMUX_PATTERNS 4 1513 struct necp_client_nexus_parameters { 1514 pid_t pid; 1515 pid_t epid; 1516 uuid_t euuid; 1517 #if SKYWALK 1518 netns_token port_reservation; 1519 #else /* !SKYWALK */ 1520 void *reserved; 1521 #endif /* !SKYWALK */ 1522 union necp_sockaddr_union local_addr; 1523 union necp_sockaddr_union remote_addr; 1524 u_int8_t ip_protocol; 1525 u_int8_t transport_protocol; 1526 u_int16_t ethertype; 1527 u_int32_t traffic_class; 1528 necp_policy_id policy_id; 1529 necp_policy_id skip_policy_id; 1530 unsigned is_listener:1; 1531 unsigned is_interpose:1; 1532 unsigned is_custom_ether:1; 1533 unsigned allow_qos_marking:1; 1534 unsigned override_address_selection:1; 1535 unsigned use_stable_address:1; // Used if override_address_selection is set 1536 unsigned no_wake_from_sleep:1; 1537 unsigned is_demuxable_parent:1; 1538 unsigned reuse_port:1; 1539 1540 uuid_t parent_flow_uuid; 1541 struct necp_demux_pattern demux_patterns[NECP_MAX_DEMUX_PATTERNS]; 1542 uint8_t demux_pattern_count; 1543 }; 1544 1545 struct necp_client_group_members { 1546 size_t group_members_length; 1547 u_int8_t *group_members; 1548 }; 1549 1550 struct necp_client_error_parameters { 1551 int32_t error; 1552 bool force_report; 1553 }; 1554 1555 struct necp_client_agent_parameters { 1556 union { 1557 struct necp_client_nexus_parameters nexus_request; 1558 u_int8_t close_token[QUIC_STATELESS_RESET_TOKEN_SIZE]; 1559 struct necp_client_group_members group_members; 1560 struct necp_client_error_parameters error; 1561 } u; 1562 }; 1563 1564 #define NECP_CLIENT_CBACTION_NONVIABLE 1 1565 #define NECP_CLIENT_CBACTION_VIABLE 2 1566 #define NECP_CLIENT_CBACTION_INITIAL 3 1567 1568 struct necp_client_add_flow_default { 1569 uuid_t agent_uuid; 1570 uuid_t registration_id; 1571 u_int16_t flags; // NECP_CLIENT_FLOW_FLAGS_* 1572 u_int16_t stats_request_count; 1573 struct necp_client_flow_stats stats_requests[1]; 1574 } __attribute__((__packed__)); 1575 1576 typedef void (*necp_client_flow_cb)(void *handle, int action, uint32_t interface_index, uint32_t necp_flags, bool *viable); 1577 1578 #if SKYWALK 1579 struct skmem_arena_mmap_info; 1580 1581 extern pid_t necp_client_get_proc_pid_from_arena_info(struct skmem_arena_mmap_info *arena_info); 1582 1583 extern void necp_client_early_close(uuid_t client_id); // Cause a single client to close stats, etc 1584 1585 #endif /* SKYWALK */ 1586 1587 #endif /* BSD_KERNEL_PRIVATE */ 1588 1589 #ifdef KERNEL 1590 #ifdef KERNEL_PRIVATE 1591 struct nstat_domain_info; 1592 extern void necp_copy_inp_domain_info(struct inpcb *, struct socket *, struct nstat_domain_info *); 1593 extern void necp_with_inp_domain_name(struct socket *so, void *ctx, void (*with_func)(char *domain_name, void *ctx)); 1594 extern bool net_domain_contains_hostname(char *hostname_string, char *domain_string); 1595 #endif /* KERNEL_PRIVATE */ 1596 #endif /* KERNEL */ 1597 1598 #ifndef KERNEL 1599 1600 extern int necp_match_policy(const uint8_t *parameters, size_t parameters_size, struct necp_aggregate_result *returned_result); 1601 1602 extern int necp_open(int flags); 1603 1604 extern int necp_client_action(int necp_fd, uint32_t action, uuid_t client_id, 1605 size_t client_id_len, uint8_t *buffer, size_t buffer_size); 1606 1607 extern int necp_session_open(int flags); 1608 1609 extern int necp_session_action(int necp_fd, uint32_t action, 1610 uint8_t *in_buffer, size_t in_buffer_length, 1611 uint8_t *out_buffer, size_t out_buffer_length); 1612 1613 #endif /* !KERNEL */ 1614 1615 #endif /* PRIVATE */ 1616 1617 #endif 1618