1 /* packet-asap.c 2 * Routines for Aggregate Server Access Protocol (ASAP) 3 * It is hopefully (needs testing) compliant to 4 * RFC 5352 5 * RFC 5354 6 * RFC 5356 7 * https://tools.ietf.org/html/draft-dreibholz-rserpool-asap-hropt-27 8 * https://tools.ietf.org/html/draft-dreibholz-rserpool-delay-26 9 * 10 * Copyright 2008-2021 Thomas Dreibholz <dreibh [AT] iem.uni-due.de> 11 * Copyright 2004-2007 Michael Tüxen <tuexen [AT] fh-muenster.de> 12 * 13 * Wireshark - Network traffic analyzer 14 * By Gerald Combs <gerald@wireshark.org> 15 * Copyright 1998 Gerald Combs 16 * 17 * Copied from README.developer 18 * 19 * SPDX-License-Identifier: GPL-2.0-or-later 20 */ 21 22 #include "config.h" 23 24 #include <epan/packet.h> 25 #include <epan/to_str.h> 26 #include <epan/sctpppids.h> 27 #include <epan/stat_tap_ui.h> 28 29 #include <wsutil/str_util.h> 30 31 #include "packet-asap+enrp-common.h" 32 33 void proto_register_asap(void); 34 void proto_reg_handoff_asap(void); 35 36 /* Initialize the protocol and registered fields */ 37 static int asap_tap = -1; 38 static int proto_asap = -1; 39 static int hf_cause_code = -1; 40 static int hf_cause_length = -1; 41 static int hf_cause_info = -1; 42 static int hf_cause_padding = -1; 43 static int hf_message_type = -1; 44 static int hf_message_flags = -1; 45 static int hf_message_length = -1; 46 static int hf_parameter_type = -1; 47 static int hf_parameter_length = -1; 48 static int hf_parameter_value = -1; 49 static int hf_parameter_padding = -1; 50 static int hf_parameter_ipv4_address = -1; 51 static int hf_parameter_ipv6_address = -1; 52 static int hf_dccp_port = -1; 53 static int hf_dccp_reserved = -1; 54 static int hf_dccp_service_code = -1; 55 static int hf_sctp_port = -1; 56 static int hf_transport_use = -1; 57 static int hf_tcp_port = -1; 58 static int hf_udp_port = -1; 59 static int hf_udp_reserved = -1; 60 static int hf_udp_lite_port = -1; 61 static int hf_udp_lite_reserved = -1; 62 static int hf_policy_type = -1; 63 static int hf_policy_value = -1; 64 static int hf_policy_weight = -1; 65 static int hf_policy_priority = -1; 66 static int hf_policy_load = -1; 67 static int hf_policy_degradation = -1; 68 static int hf_policy_loaddpf = -1; 69 static int hf_policy_weightdpf = -1; 70 static int hf_policy_distance = -1; 71 static int hf_pool_handle = -1; 72 static int hf_pe_pe_identifier = -1; 73 static int hf_home_enrp_id = -1; 74 static int hf_reg_life = -1; 75 static int hf_server_identifier = -1; 76 static int hf_cookie = -1; 77 static int hf_pe_identifier = -1; 78 static int hf_pe_checksum = -1; 79 static int hf_hropt_items = -1; 80 static int hf_home_enrp_server_bit = -1; 81 static int hf_reject_bit = -1; 82 83 /* Initialize the subtree pointers */ 84 static gint ett_asap = -1; 85 static gint ett_asap_parameter = -1; 86 static gint ett_asap_cause = -1; 87 static gint ett_asap_flags = -1; 88 89 static guint64 asap_total_msgs = 0; 90 static guint64 asap_total_bytes = 0; 91 92 static void 93 dissect_parameters(tvbuff_t *, proto_tree *); 94 static void 95 dissect_parameter(tvbuff_t *, proto_tree *); 96 static int 97 dissect_asap(tvbuff_t *, packet_info *, proto_tree *, void *); 98 99 #define ASAP_UDP_PORT 3863 100 #define ASAP_TCP_PORT 3863 101 #define ASAP_SCTP_PORT 3863 102 103 typedef struct _asap_tap_rec_t { 104 guint8 type; 105 guint16 size; 106 const char* type_string; 107 } asap_tap_rec_t; 108 109 /* Dissectors for error causes. This is common for ASAP and ENRP. */ 110 111 static void 112 dissect_unknown_cause(tvbuff_t *cause_tvb, proto_tree *cause_tree, proto_item *cause_item) 113 { 114 guint16 code, length, cause_info_length; 115 116 code = tvb_get_ntohs(cause_tvb, CAUSE_CODE_OFFSET); 117 length = tvb_get_ntohs(cause_tvb, CAUSE_LENGTH_OFFSET); 118 cause_info_length = length - CAUSE_HEADER_LENGTH; 119 if (cause_info_length > 0) 120 proto_tree_add_item(cause_tree, hf_cause_info, cause_tvb, CAUSE_INFO_OFFSET, cause_info_length, ENC_NA); 121 proto_item_append_text(cause_item, " (code %u and %u byte%s information)", code, cause_info_length, plurality(cause_info_length, "", "s")); 122 } 123 124 static void 125 dissect_error_cause(tvbuff_t *cause_tvb, proto_tree *parameter_tree) 126 { 127 guint16 code, length, padding_length; 128 proto_item *cause_item; 129 proto_tree *cause_tree; 130 tvbuff_t *parameter_tvb, *message_tvb; 131 132 code = tvb_get_ntohs(cause_tvb, CAUSE_CODE_OFFSET); 133 length = tvb_get_ntohs(cause_tvb, CAUSE_LENGTH_OFFSET); 134 padding_length = tvb_reported_length(cause_tvb) - length; 135 136 cause_tree = proto_tree_add_subtree(parameter_tree, cause_tvb, CAUSE_HEADER_OFFSET, -1, ett_asap_cause, &cause_item, 137 val_to_str_const(code, cause_code_values, "Unknown error cause")); 138 139 proto_tree_add_item(cause_tree, hf_cause_code, cause_tvb, CAUSE_CODE_OFFSET, CAUSE_CODE_LENGTH, ENC_BIG_ENDIAN); 140 proto_tree_add_item(cause_tree, hf_cause_length, cause_tvb, CAUSE_LENGTH_OFFSET, CAUSE_LENGTH_LENGTH, ENC_BIG_ENDIAN); 141 142 switch(code) { 143 case UNRECOGNIZED_PARAMETER_CAUSE_CODE: 144 parameter_tvb = tvb_new_subset_remaining(cause_tvb, CAUSE_INFO_OFFSET); 145 dissect_parameter(parameter_tvb, cause_tree); 146 break; 147 case UNRECONGNIZED_MESSAGE_CAUSE_CODE: 148 message_tvb = tvb_new_subset_remaining(cause_tvb, CAUSE_INFO_OFFSET); 149 dissect_asap(message_tvb, NULL, cause_tree, NULL); 150 break; 151 case INVALID_VALUES: 152 parameter_tvb = tvb_new_subset_remaining(cause_tvb, CAUSE_INFO_OFFSET); 153 dissect_parameter(parameter_tvb, cause_tree); 154 break; 155 case NON_UNIQUE_PE_IDENTIFIER: 156 break; 157 case POOLING_POLICY_INCONSISTENT_CAUSE_CODE: 158 parameter_tvb = tvb_new_subset_remaining(cause_tvb, CAUSE_INFO_OFFSET); 159 dissect_parameter(parameter_tvb, cause_tree); 160 break; 161 case LACK_OF_RESOURCES_CAUSE_CODE: 162 break; 163 case INCONSISTENT_TRANSPORT_TYPE_CAUSE_CODE: 164 parameter_tvb = tvb_new_subset_remaining(cause_tvb, CAUSE_INFO_OFFSET); 165 dissect_parameter(parameter_tvb, cause_tree); 166 break; 167 case INCONSISTENT_DATA_CONTROL_CONFIGURATION_CAUSE_CODE: 168 break; 169 case UNKNOWN_POOL_HANDLE: 170 break; 171 case REJECTION_DUE_TO_SECURITY_CAUSE_CODE: 172 break; 173 default: 174 dissect_unknown_cause(cause_tvb, cause_tree, cause_item); 175 break; 176 } 177 if (padding_length > 0) 178 proto_tree_add_item(cause_tree, hf_cause_padding, cause_tvb, CAUSE_HEADER_OFFSET + length, padding_length, ENC_NA); 179 } 180 181 static void 182 dissect_error_causes(tvbuff_t *error_causes_tvb, proto_tree *parameter_tree) 183 { 184 guint16 length, total_length; 185 gint offset; 186 tvbuff_t *error_cause_tvb; 187 188 offset = 0; 189 while(tvb_reported_length_remaining(error_causes_tvb, offset) > 0) { 190 length = tvb_get_ntohs(error_causes_tvb, offset + CAUSE_LENGTH_OFFSET); 191 total_length = ADD_PADDING(length); 192 error_cause_tvb = tvb_new_subset_length(error_causes_tvb, offset , total_length); 193 dissect_error_cause(error_cause_tvb, parameter_tree); 194 offset += total_length; 195 } 196 } 197 198 /* Dissectors for parameters. This is common for ASAP and ENRP. */ 199 200 static void 201 dissect_ipv4_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) 202 { 203 proto_tree_add_item(parameter_tree, hf_parameter_ipv4_address, parameter_tvb, IPV4_ADDRESS_OFFSET, IPV4_ADDRESS_LENGTH, ENC_BIG_ENDIAN); 204 proto_item_append_text(parameter_item, " (%s)", tvb_ip_to_str(wmem_packet_scope(), parameter_tvb, IPV4_ADDRESS_OFFSET)); 205 } 206 207 static void 208 dissect_ipv6_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) 209 { 210 proto_tree_add_item(parameter_tree, hf_parameter_ipv6_address, parameter_tvb, IPV6_ADDRESS_OFFSET, IPV6_ADDRESS_LENGTH, ENC_NA); 211 proto_item_append_text(parameter_item, " (%s)", tvb_ip6_to_str(wmem_packet_scope(), parameter_tvb, IPV6_ADDRESS_OFFSET)); 212 } 213 214 static void 215 dissect_dccp_transport_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree) 216 { 217 tvbuff_t *parameters_tvb; 218 219 proto_tree_add_item(parameter_tree, hf_dccp_port, parameter_tvb, DCCP_PORT_OFFSET, DCCP_PORT_LENGTH, ENC_BIG_ENDIAN); 220 proto_tree_add_item(parameter_tree, hf_dccp_reserved, parameter_tvb, DCCP_RESERVED_OFFSET, DCCP_RESERVED_LENGTH, ENC_BIG_ENDIAN); 221 proto_tree_add_item(parameter_tree, hf_dccp_service_code, parameter_tvb, DCCP_SERVICE_CODE_OFFSET, DCCP_SERVICE_CODE_LENGTH, ENC_BIG_ENDIAN); 222 223 parameters_tvb = tvb_new_subset_remaining(parameter_tvb, DCCP_ADDRESS_OFFSET); 224 dissect_parameters(parameters_tvb, parameter_tree); 225 } 226 227 static void 228 dissect_sctp_transport_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree) 229 { 230 tvbuff_t *parameters_tvb; 231 232 proto_tree_add_item(parameter_tree, hf_sctp_port, parameter_tvb, SCTP_PORT_OFFSET, SCTP_PORT_LENGTH, ENC_BIG_ENDIAN); 233 proto_tree_add_item(parameter_tree, hf_transport_use, parameter_tvb, SCTP_TRANSPORT_USE_OFFSET, SCTP_TRANSPORT_USE_LENGTH, ENC_BIG_ENDIAN); 234 235 parameters_tvb = tvb_new_subset_remaining(parameter_tvb, SCTP_ADDRESS_OFFSET); 236 dissect_parameters(parameters_tvb, parameter_tree); 237 } 238 239 static void 240 dissect_tcp_transport_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree) 241 { 242 tvbuff_t *parameters_tvb; 243 244 proto_tree_add_item(parameter_tree, hf_tcp_port, parameter_tvb, TCP_PORT_OFFSET, TCP_PORT_LENGTH, ENC_BIG_ENDIAN); 245 proto_tree_add_item(parameter_tree, hf_transport_use, parameter_tvb, TCP_TRANSPORT_USE_OFFSET, TCP_TRANSPORT_USE_LENGTH, ENC_BIG_ENDIAN); 246 247 parameters_tvb = tvb_new_subset_remaining(parameter_tvb, TCP_ADDRESS_OFFSET); 248 dissect_parameters(parameters_tvb, parameter_tree); 249 } 250 251 static void 252 dissect_udp_transport_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree) 253 { 254 tvbuff_t *parameters_tvb; 255 256 proto_tree_add_item(parameter_tree, hf_udp_port, parameter_tvb, UDP_PORT_OFFSET, UDP_PORT_LENGTH, ENC_BIG_ENDIAN); 257 proto_tree_add_item(parameter_tree, hf_udp_reserved, parameter_tvb, UDP_RESERVED_OFFSET, UDP_RESERVED_LENGTH, ENC_BIG_ENDIAN); 258 259 parameters_tvb = tvb_new_subset_remaining(parameter_tvb, UDP_ADDRESS_OFFSET); 260 dissect_parameters(parameters_tvb, parameter_tree); 261 } 262 263 static void 264 dissect_udp_lite_transport_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree) 265 { 266 tvbuff_t *parameters_tvb; 267 268 proto_tree_add_item(parameter_tree, hf_udp_lite_port, parameter_tvb, UDP_LITE_PORT_OFFSET, UDP_LITE_PORT_LENGTH, ENC_BIG_ENDIAN); 269 proto_tree_add_item(parameter_tree, hf_udp_lite_reserved, parameter_tvb, UDP_LITE_RESERVED_OFFSET, UDP_LITE_RESERVED_LENGTH, ENC_BIG_ENDIAN); 270 271 parameters_tvb = tvb_new_subset_remaining(parameter_tvb, UDP_LITE_ADDRESS_OFFSET); 272 dissect_parameters(parameters_tvb, parameter_tree); 273 } 274 275 static void 276 dissect_pool_member_selection_policy_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree) 277 { 278 guint32 type; 279 guint length; 280 281 proto_tree_add_item(parameter_tree, hf_policy_type, parameter_tvb, POLICY_TYPE_OFFSET, POLICY_TYPE_LENGTH, ENC_BIG_ENDIAN); 282 type = tvb_get_ntohl(parameter_tvb, POLICY_TYPE_OFFSET); 283 switch (type) { 284 case RANDOM_POLICY: 285 case ROUND_ROBIN_POLICY: 286 break; 287 case WEIGHTED_RANDOM_POLICY: 288 case WEIGHTED_ROUND_ROBIN_POLICY: 289 proto_tree_add_item(parameter_tree, hf_policy_weight, parameter_tvb, POLICY_WEIGHT_OFFSET, POLICY_WEIGHT_LENGTH, ENC_BIG_ENDIAN); 290 break; 291 case PRIORITY_POLICY: 292 proto_tree_add_item(parameter_tree, hf_policy_priority, parameter_tvb, POLICY_PRIORITY_OFFSET, POLICY_PRIORITY_LENGTH, ENC_BIG_ENDIAN); 293 break; 294 case LEAST_USED_POLICY: 295 case RANDOMIZED_LEAST_USED_POLICY: 296 proto_tree_add_double_format_value(parameter_tree, hf_policy_load, parameter_tvb, POLICY_LOAD_OFFSET, POLICY_LOAD_LENGTH, 297 100.0 * tvb_get_ntohl(parameter_tvb, POLICY_LOAD_OFFSET) / (double)0xffffffff, "%1.2f%%", 298 100.0 * tvb_get_ntohl(parameter_tvb, POLICY_LOAD_OFFSET) / (double)0xffffffff); 299 break; 300 case LEAST_USED_WITH_DEG_POLICY: 301 case PRIORITY_LEAST_USED_POLICY: 302 proto_tree_add_double_format_value(parameter_tree, hf_policy_load, parameter_tvb, POLICY_LOAD_OFFSET, POLICY_LOAD_LENGTH, 303 100.0 * tvb_get_ntohl(parameter_tvb, POLICY_LOAD_OFFSET) / (double)0xffffffff, "%1.2f%%", 304 100.0 * tvb_get_ntohl(parameter_tvb, POLICY_LOAD_OFFSET) / (double)0xffffffff); 305 proto_tree_add_double_format_value(parameter_tree, hf_policy_degradation, parameter_tvb, POLICY_DEGRADATION_OFFSET, POLICY_DEGRADATION_LENGTH, 306 100.0 * tvb_get_ntohl(parameter_tvb, POLICY_DEGRADATION_OFFSET) / (double)0xffffffff, "%1.2f%%", 307 100.0 * tvb_get_ntohl(parameter_tvb, POLICY_DEGRADATION_OFFSET) / (double)0xffffffff); 308 break; 309 case LEAST_USED_DPF_POLICY: 310 proto_tree_add_double_format_value(parameter_tree, hf_policy_load, parameter_tvb, POLICY_LOAD_OFFSET, POLICY_LOAD_LENGTH, 311 100.0 * tvb_get_ntohl(parameter_tvb, POLICY_LOAD_OFFSET) / (double)0xffffffff, "%1.2f%%", 312 100.0 * tvb_get_ntohl(parameter_tvb, POLICY_LOAD_OFFSET) / (double)0xffffffff); 313 proto_tree_add_double_format_value(parameter_tree, hf_policy_loaddpf, parameter_tvb, POLICY_LUDPF_LOADDPF_OFFSET, POLICY_LUDPF_LOADDPF_LENGTH, 314 tvb_get_ntohl(parameter_tvb, POLICY_LUDPF_LOADDPF_OFFSET) / (double)0xffffffff, "%1.5f", 315 tvb_get_ntohl(parameter_tvb, POLICY_LUDPF_LOADDPF_OFFSET) / (double)0xffffffff); 316 proto_tree_add_item(parameter_tree, hf_policy_distance, parameter_tvb, POLICY_LUDPF_DISTANCE_OFFSET, POLICY_LUDPF_DISTANCE_LENGTH, ENC_BIG_ENDIAN); 317 break; 318 case WEIGHTED_RANDOM_DPF_POLICY: 319 proto_tree_add_item(parameter_tree, hf_policy_weight, parameter_tvb, POLICY_WEIGHT_OFFSET, POLICY_WEIGHT_LENGTH, ENC_BIG_ENDIAN); 320 proto_tree_add_double_format_value(parameter_tree, hf_policy_weightdpf, parameter_tvb, POLICY_WRANDDPF_WEIGHTDPF_OFFSET, POLICY_WRANDDPF_WEIGHTDPF_LENGTH, 321 tvb_get_ntohl(parameter_tvb, POLICY_WRANDDPF_WEIGHTDPF_OFFSET) / (double)0xffffffff, "%1.5f", 322 tvb_get_ntohl(parameter_tvb, POLICY_WRANDDPF_WEIGHTDPF_OFFSET) / (double)0xffffffff); 323 proto_tree_add_item(parameter_tree, hf_policy_distance, parameter_tvb, POLICY_WRANDDPF_DISTANCE_OFFSET, POLICY_WRANDDPF_DISTANCE_LENGTH, ENC_BIG_ENDIAN); 324 break; 325 default: 326 length = tvb_reported_length(parameter_tvb) - POLICY_VALUE_OFFSET; 327 if (length > 0) { 328 proto_tree_add_item(parameter_tree, hf_policy_value, parameter_tvb, POLICY_VALUE_OFFSET, length, ENC_NA); 329 } 330 break; 331 } 332 } 333 334 static void 335 dissect_pool_handle_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree) 336 { 337 guint16 handle_length; 338 proto_item* pi; 339 340 handle_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH; 341 pi = proto_tree_add_item(parameter_tree, hf_pool_handle, parameter_tvb, POOL_HANDLE_OFFSET, handle_length, ENC_NA); 342 343 proto_item_append_text(pi, " (%s)", 344 tvb_format_text(wmem_packet_scope(), parameter_tvb, POOL_HANDLE_OFFSET, handle_length)); 345 } 346 347 static void 348 dissect_pool_element_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree) 349 { 350 tvbuff_t* parameters_tvb; 351 352 proto_tree_add_item(parameter_tree, hf_pe_pe_identifier, parameter_tvb, PE_PE_IDENTIFIER_OFFSET, PE_PE_IDENTIFIER_LENGTH, ENC_BIG_ENDIAN); 353 proto_tree_add_item(parameter_tree, hf_home_enrp_id, parameter_tvb, HOME_ENRP_INDENTIFIER_OFFSET, HOME_ENRP_INDENTIFIER_LENGTH, ENC_BIG_ENDIAN); 354 proto_tree_add_item(parameter_tree, hf_reg_life, parameter_tvb, REGISTRATION_LIFE_OFFSET, REGISTRATION_LIFE_LENGTH, ENC_BIG_ENDIAN); 355 356 parameters_tvb = tvb_new_subset_remaining(parameter_tvb, USER_TRANSPORT_PARAMETER_OFFSET); 357 dissect_parameters(parameters_tvb, parameter_tree); 358 } 359 360 static void 361 dissect_server_information_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree) 362 { 363 tvbuff_t *parameters_tvb; 364 365 proto_tree_add_item(parameter_tree, hf_server_identifier, parameter_tvb, SERVER_ID_OFFSET, SERVER_ID_LENGTH, ENC_BIG_ENDIAN); 366 367 parameters_tvb = tvb_new_subset_remaining(parameter_tvb, SERVER_TRANSPORT_OFFSET); 368 dissect_parameters(parameters_tvb, parameter_tree); 369 } 370 371 static void 372 dissect_operation_error_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree) 373 { 374 tvbuff_t *error_causes_tvb; 375 376 error_causes_tvb = tvb_new_subset_remaining(parameter_tvb, ERROR_CAUSES_OFFSET); 377 dissect_error_causes(error_causes_tvb, parameter_tree); 378 } 379 380 static void 381 dissect_cookie_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) 382 { 383 guint16 cookie_length; 384 385 cookie_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH; 386 if (cookie_length > 0) 387 proto_tree_add_item(parameter_tree, hf_cookie, parameter_tvb, COOKIE_OFFSET, cookie_length, ENC_NA); 388 proto_item_append_text(parameter_item, " (%u byte%s)", cookie_length, plurality(cookie_length, "", "s")); 389 } 390 391 static void 392 dissect_pe_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) 393 { 394 proto_tree_add_item(parameter_tree, hf_pe_identifier, parameter_tvb, PE_IDENTIFIER_OFFSET, PE_IDENTIFIER_LENGTH, ENC_BIG_ENDIAN); 395 proto_item_append_text(parameter_item, " (0x%x)", tvb_get_ntohl(parameter_tvb, PE_IDENTIFIER_OFFSET)); 396 } 397 398 static void 399 dissect_pe_checksum_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) 400 { 401 proto_tree_add_checksum(parameter_tree, parameter_tvb, PE_CHECKSUM_OFFSET, hf_pe_checksum, -1, NULL, NULL, 0, ENC_BIG_ENDIAN, PROTO_CHECKSUM_NO_FLAGS); 402 proto_item_append_text(parameter_item, " (0x%x)", tvb_get_ntohs(parameter_tvb, PE_CHECKSUM_OFFSET)); 403 } 404 405 static void 406 dissect_handle_resolution_option_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree) 407 { 408 proto_tree_add_item(parameter_tree, hf_hropt_items, parameter_tvb, HROPT_ITEMS_OFFSET, HROPT_ITEMS_LENGTH, ENC_BIG_ENDIAN); 409 } 410 411 static void 412 dissect_unknown_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) 413 { 414 guint16 type, parameter_value_length; 415 416 type = tvb_get_ntohs(parameter_tvb, PARAMETER_TYPE_OFFSET); 417 parameter_value_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH; 418 419 if (parameter_value_length > 0) 420 proto_tree_add_item(parameter_tree, hf_parameter_value, parameter_tvb, PARAMETER_VALUE_OFFSET, parameter_value_length, ENC_NA); 421 422 proto_item_append_text(parameter_item, " (type %u and %u byte%s value)", type, parameter_value_length, plurality(parameter_value_length, "", "s")); 423 } 424 425 static void 426 dissect_parameter(tvbuff_t *parameter_tvb, proto_tree *asap_tree) 427 { 428 guint16 type, length, padding_length; 429 proto_item *parameter_item; 430 proto_tree *parameter_tree; 431 432 /* extract tag and length from the parameter */ 433 type = tvb_get_ntohs(parameter_tvb, PARAMETER_TYPE_OFFSET); 434 length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET); 435 padding_length = tvb_reported_length(parameter_tvb) - length; 436 437 /* create proto_tree stuff */ 438 parameter_tree = proto_tree_add_subtree(asap_tree, parameter_tvb, PARAMETER_HEADER_OFFSET, -1, 439 ett_asap_parameter, ¶meter_item, val_to_str_const(type, parameter_type_values, "Unknown Parameter")); 440 441 /* add tag and length to the asap tree */ 442 proto_tree_add_item(parameter_tree, hf_parameter_type, parameter_tvb, PARAMETER_TYPE_OFFSET, PARAMETER_TYPE_LENGTH, ENC_BIG_ENDIAN); 443 proto_tree_add_item(parameter_tree, hf_parameter_length, parameter_tvb, PARAMETER_LENGTH_OFFSET, PARAMETER_LENGTH_LENGTH, ENC_BIG_ENDIAN); 444 445 switch(type) { 446 case IPV4_ADDRESS_PARAMETER_TYPE: 447 dissect_ipv4_parameter(parameter_tvb, parameter_tree, parameter_item); 448 break; 449 case IPV6_ADDRESS_PARAMETER_TYPE: 450 dissect_ipv6_parameter(parameter_tvb, parameter_tree, parameter_item); 451 break; 452 case DCCP_TRANSPORT_PARAMETER_TYPE: 453 dissect_dccp_transport_parameter(parameter_tvb, parameter_tree); 454 break; 455 case SCTP_TRANSPORT_PARAMETER_TYPE: 456 dissect_sctp_transport_parameter(parameter_tvb, parameter_tree); 457 break; 458 case TCP_TRANSPORT_PARAMETER_TYPE: 459 dissect_tcp_transport_parameter(parameter_tvb, parameter_tree); 460 break; 461 case UDP_TRANSPORT_PARAMETER_TYPE: 462 dissect_udp_transport_parameter(parameter_tvb, parameter_tree); 463 break; 464 case UDP_LITE_TRANSPORT_PARAMETER_TYPE: 465 dissect_udp_lite_transport_parameter(parameter_tvb, parameter_tree); 466 break; 467 case POOL_MEMBER_SELECTION_POLICY_PARAMETER_TYPE: 468 dissect_pool_member_selection_policy_parameter(parameter_tvb, parameter_tree); 469 break; 470 case POOL_HANDLE_PARAMETER_TYPE: 471 dissect_pool_handle_parameter(parameter_tvb, parameter_tree); 472 break; 473 case POOL_ELEMENT_PARAMETER_TYPE: 474 dissect_pool_element_parameter(parameter_tvb, parameter_tree); 475 break; 476 case SERVER_INFORMATION_PARAMETER_TYPE: 477 dissect_server_information_parameter(parameter_tvb, parameter_tree); 478 break; 479 case OPERATION_ERROR_PARAMETER_TYPE: 480 dissect_operation_error_parameter(parameter_tvb, parameter_tree); 481 break; 482 case COOKIE_PARAMETER_TYPE: 483 dissect_cookie_parameter(parameter_tvb, parameter_tree, parameter_item); 484 break; 485 case PE_IDENTIFIER_PARAMETER_TYPE: 486 dissect_pe_identifier_parameter(parameter_tvb, parameter_tree, parameter_item); 487 break; 488 case PE_CHECKSUM_PARAMETER_TYPE: 489 dissect_pe_checksum_parameter(parameter_tvb, parameter_tree, parameter_item); 490 break; 491 case HANDLE_RESOLUTION_OPTION_PARAMETER_TYPE: 492 dissect_handle_resolution_option_parameter(parameter_tvb, parameter_tree); 493 break; 494 default: 495 dissect_unknown_parameter(parameter_tvb, parameter_tree, parameter_item); 496 break; 497 }; 498 499 if (padding_length > 0) 500 proto_tree_add_item(parameter_tree, hf_parameter_padding, parameter_tvb, PARAMETER_HEADER_OFFSET + length, padding_length, ENC_NA); 501 } 502 503 static void 504 dissect_parameters(tvbuff_t *parameters_tvb, proto_tree *tree) 505 { 506 gint offset, length, total_length, remaining_length; 507 tvbuff_t *parameter_tvb; 508 509 offset = 0; 510 while((remaining_length = tvb_reported_length_remaining(parameters_tvb, offset)) > 0) { 511 length = tvb_get_ntohs(parameters_tvb, offset + PARAMETER_LENGTH_OFFSET); 512 total_length = ADD_PADDING(length); 513 if (remaining_length >= length) 514 total_length = MIN(total_length, remaining_length); 515 /* create a tvb for the parameter including the padding bytes */ 516 parameter_tvb = tvb_new_subset_length(parameters_tvb, offset, total_length); 517 dissect_parameter(parameter_tvb, tree); 518 /* get rid of the handled parameter */ 519 offset += total_length; 520 } 521 } 522 523 /* Dissectors for messages. This is specific to ASAP */ 524 525 #define REGISTRATION_MESSAGE_TYPE 0x01 526 #define DEREGISTRATION_MESSAGE_TYPE 0x02 527 #define REGISTRATION_RESPONSE_MESSAGE_TYPE 0x03 528 #define DEREGISTRATION_RESPONSE_MESSAGE_TYPE 0x04 529 #define HANDLE_RESOLUTION_MESSAGE_TYPE 0x05 530 #define HANDLE_RESOLUTION_RESPONSE_MESSAGE_TYPE 0x06 531 #define ENDPOINT_KEEP_ALIVE_MESSAGE_TYPE 0x07 532 #define ENDPOINT_KEEP_ALIVE_ACK_MESSAGE_TYPE 0x08 533 #define ENDPOINT_UNREACHABLE_MESSAGE_TYPE 0x09 534 #define SERVER_ANNOUNCE_MESSAGE_TYPE 0x0a 535 #define COOKIE_MESSAGE_TYPE 0x0b 536 #define COOKIE_ECHO_MESSAGE_TYPE 0x0c 537 #define BUSINESS_CARD_MESSAGE_TYPE 0x0d 538 #define ERROR_MESSAGE_TYPE 0x0e 539 540 static const value_string message_type_values[] = { 541 { REGISTRATION_MESSAGE_TYPE, "ASAP Registration" }, 542 { DEREGISTRATION_MESSAGE_TYPE, "ASAP Deregistration" }, 543 { REGISTRATION_RESPONSE_MESSAGE_TYPE, "ASAP Registration Response" }, 544 { DEREGISTRATION_RESPONSE_MESSAGE_TYPE, "ASAP Deregistration Response" }, 545 { HANDLE_RESOLUTION_MESSAGE_TYPE, "ASAP Handle Resolution" }, 546 { HANDLE_RESOLUTION_RESPONSE_MESSAGE_TYPE, "ASAP Handle Resolution Response" }, 547 { ENDPOINT_KEEP_ALIVE_MESSAGE_TYPE, "ASAP Endpoint Keep-Alive" }, 548 { ENDPOINT_KEEP_ALIVE_ACK_MESSAGE_TYPE, "ASAP Endpoint Keep-Alive Acknowledgement" }, 549 { ENDPOINT_UNREACHABLE_MESSAGE_TYPE, "ASAP Endpoint Unreachable" }, 550 { SERVER_ANNOUNCE_MESSAGE_TYPE, "ASAP Server Announce" }, 551 { COOKIE_MESSAGE_TYPE, "ASAP Cookie" }, 552 { COOKIE_ECHO_MESSAGE_TYPE, "ASAP Cookie Echo" }, 553 { BUSINESS_CARD_MESSAGE_TYPE, "ASAP Business Card" }, 554 { ERROR_MESSAGE_TYPE, "ASAP Error" }, 555 { 0, NULL } }; 556 557 #define SERVER_IDENTIFIER_OFFSET MESSAGE_VALUE_OFFSET 558 #define SERVER_IDENTIFIER_LENGTH 4 559 560 #define HOME_ENRP_SERVER_BIT_MASK 0x01 561 #define REJECT_BIT_MASK 0x01 562 563 static const true_false_string home_enrp_server_bit_value = { 564 "Want to be new ENRP server", 565 "Do not want to be new ENRP server" 566 }; 567 568 static const true_false_string reject_bit_value = { 569 "Rejected", 570 "Accepted" 571 }; 572 573 static void 574 dissect_asap_message(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *asap_tree) 575 { 576 asap_tap_rec_t *tap_rec; 577 tvbuff_t *parameters_tvb; 578 proto_item *flags_item; 579 proto_tree *flags_tree; 580 guint8 type; 581 582 type = tvb_get_guint8(message_tvb, MESSAGE_TYPE_OFFSET); 583 /* pinfo is NULL only if dissect_asap_message is called via dissect_error_cause */ 584 if (pinfo) { 585 tap_rec = wmem_new0(pinfo->pool, asap_tap_rec_t); 586 tap_rec->type = type; 587 tap_rec->size = tvb_get_ntohs(message_tvb, MESSAGE_LENGTH_OFFSET); 588 tap_rec->type_string = val_to_str_const(tap_rec->type, message_type_values, "Unknown ASAP type"); 589 tap_queue_packet(asap_tap, pinfo, tap_rec); 590 591 col_add_fstr(pinfo->cinfo, COL_INFO, "%s ", val_to_str_const(type, message_type_values, "Unknown ASAP type")); 592 } 593 594 if (asap_tree) { 595 proto_tree_add_item(asap_tree, hf_message_type, message_tvb, MESSAGE_TYPE_OFFSET, MESSAGE_TYPE_LENGTH, ENC_BIG_ENDIAN); 596 flags_item = proto_tree_add_item(asap_tree, hf_message_flags, message_tvb, MESSAGE_FLAGS_OFFSET, MESSAGE_FLAGS_LENGTH, ENC_BIG_ENDIAN); 597 flags_tree = proto_item_add_subtree(flags_item, ett_asap_flags); 598 if (type == REGISTRATION_RESPONSE_MESSAGE_TYPE) { 599 proto_tree_add_item(flags_tree, hf_reject_bit, message_tvb, MESSAGE_FLAGS_OFFSET, MESSAGE_FLAGS_LENGTH, ENC_BIG_ENDIAN); 600 } 601 if (type == ENDPOINT_KEEP_ALIVE_MESSAGE_TYPE) { 602 proto_tree_add_item(flags_tree, hf_home_enrp_server_bit, message_tvb, MESSAGE_FLAGS_OFFSET, MESSAGE_FLAGS_LENGTH, ENC_BIG_ENDIAN); 603 } 604 proto_tree_add_item(asap_tree, hf_message_length, message_tvb, MESSAGE_LENGTH_OFFSET, MESSAGE_LENGTH_LENGTH, ENC_BIG_ENDIAN); 605 if ((type == SERVER_ANNOUNCE_MESSAGE_TYPE) || (type == ENDPOINT_KEEP_ALIVE_MESSAGE_TYPE)) { 606 proto_tree_add_item(asap_tree, hf_server_identifier, message_tvb, SERVER_IDENTIFIER_OFFSET, SERVER_IDENTIFIER_LENGTH, ENC_BIG_ENDIAN); 607 parameters_tvb = tvb_new_subset_remaining(message_tvb, MESSAGE_VALUE_OFFSET + SERVER_IDENTIFIER_LENGTH); 608 } else { 609 parameters_tvb = tvb_new_subset_remaining(message_tvb, MESSAGE_VALUE_OFFSET); 610 } 611 dissect_parameters(parameters_tvb, asap_tree); 612 } 613 } 614 615 static int 616 dissect_asap(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) 617 { 618 proto_item *asap_item; 619 proto_tree *asap_tree; 620 621 /* pinfo is NULL only if dissect_asap is called from dissect_error_cause */ 622 if (pinfo) 623 col_set_str(pinfo->cinfo, COL_PROTOCOL, "ASAP"); 624 625 /* create the asap protocol tree */ 626 asap_item = proto_tree_add_item(tree, proto_asap, message_tvb, 0, -1, ENC_NA); 627 asap_tree = proto_item_add_subtree(asap_item, ett_asap); 628 629 /* dissect the message */ 630 dissect_asap_message(message_tvb, pinfo, asap_tree); 631 return tvb_captured_length(message_tvb); 632 } 633 634 /* TAP STAT INFO */ 635 typedef enum 636 { 637 MESSAGE_TYPE_COLUMN = 0, 638 MESSAGES_COLUMN, 639 MESSAGES_SHARE_COLUMN, 640 BYTES_COLUMN, 641 BYTES_SHARE_COLUMN, 642 FIRST_SEEN_COLUMN, 643 LAST_SEEN_COLUMN, 644 INTERVAL_COLUMN, 645 MESSAGE_RATE_COLUMN, 646 BYTE_RATE_COLUMN 647 } asap_stat_columns; 648 649 static stat_tap_table_item asap_stat_fields[] = { 650 { TABLE_ITEM_STRING, TAP_ALIGN_LEFT, "ASAP Message Type", "%-25s" }, 651 { TABLE_ITEM_UINT, TAP_ALIGN_RIGHT, "Messages ", "%u" }, 652 { TABLE_ITEM_UINT, TAP_ALIGN_RIGHT, "Messages Share (%)" , "%1.3f %%" }, 653 { TABLE_ITEM_UINT, TAP_ALIGN_RIGHT, "Bytes (B)", "%u" }, 654 { TABLE_ITEM_UINT, TAP_ALIGN_RIGHT, "Bytes Share (%) ", "%1.3f %%" }, 655 { TABLE_ITEM_FLOAT, TAP_ALIGN_LEFT, "First Seen (s)", "%1.6f" }, 656 { TABLE_ITEM_FLOAT, TAP_ALIGN_LEFT, "Last Seen (s)", "%1.6f" }, 657 { TABLE_ITEM_FLOAT, TAP_ALIGN_LEFT, "Interval (s)", "%1.6f" }, 658 { TABLE_ITEM_FLOAT, TAP_ALIGN_LEFT, "Message Rate (Msg/s)", "%1.2f" }, 659 { TABLE_ITEM_FLOAT, TAP_ALIGN_LEFT, "Byte Rate (B/s)", "%1.2f" } 660 }; 661 662 static void asap_stat_init(stat_tap_table_ui* new_stat) 663 { 664 const char *table_name = "ASAP Statistics"; 665 int num_fields = sizeof(asap_stat_fields)/sizeof(stat_tap_table_item); 666 stat_tap_table *table; 667 int i = 0; 668 stat_tap_table_item_type items[sizeof(asap_stat_fields)/sizeof(stat_tap_table_item)]; 669 670 table = stat_tap_find_table(new_stat, table_name); 671 if (table) { 672 if (new_stat->stat_tap_reset_table_cb) { 673 new_stat->stat_tap_reset_table_cb(table); 674 } 675 return; 676 } 677 678 table = stat_tap_init_table(table_name, num_fields, 0, NULL); 679 stat_tap_add_table(new_stat, table); 680 681 /* Add a row for each value type */ 682 while (message_type_values[i].strptr) { 683 items[MESSAGE_TYPE_COLUMN].type = TABLE_ITEM_STRING; 684 items[MESSAGE_TYPE_COLUMN].value.string_value = message_type_values[i].strptr; 685 items[MESSAGES_COLUMN].type = TABLE_ITEM_UINT; 686 items[MESSAGES_COLUMN].value.uint_value = 0; 687 items[MESSAGES_SHARE_COLUMN].type = TABLE_ITEM_NONE; 688 items[MESSAGES_SHARE_COLUMN].value.float_value = -1.0; 689 items[BYTES_COLUMN].type = TABLE_ITEM_UINT; 690 items[BYTES_COLUMN].value.uint_value = 0; 691 items[BYTES_SHARE_COLUMN].type = TABLE_ITEM_NONE; 692 items[BYTES_SHARE_COLUMN].value.float_value = -1.0; 693 items[FIRST_SEEN_COLUMN].type = TABLE_ITEM_NONE; 694 items[FIRST_SEEN_COLUMN].value.float_value = DBL_MAX; 695 items[LAST_SEEN_COLUMN].type = TABLE_ITEM_NONE; 696 items[LAST_SEEN_COLUMN].value.float_value = DBL_MIN; 697 items[INTERVAL_COLUMN].type = TABLE_ITEM_NONE; 698 items[INTERVAL_COLUMN].value.float_value = -1.0; 699 items[MESSAGE_RATE_COLUMN].type = TABLE_ITEM_NONE; 700 items[MESSAGE_RATE_COLUMN].value.float_value = -1.0; 701 items[BYTE_RATE_COLUMN].type = TABLE_ITEM_NONE; 702 items[BYTE_RATE_COLUMN].value.float_value = -1.0; 703 stat_tap_init_table_row(table, i, num_fields, items); 704 i++; 705 } 706 } 707 708 static tap_packet_status 709 asap_stat_packet(void* tapdata, packet_info* pinfo _U_, epan_dissect_t* edt _U_, const void* data) 710 { 711 stat_data_t* stat_data = (stat_data_t*)tapdata; 712 const asap_tap_rec_t* tap_rec = (const asap_tap_rec_t*)data; 713 stat_tap_table* table; 714 stat_tap_table_item_type* msg_data; 715 gint idx; 716 guint64 messages; 717 guint64 bytes; 718 int i = 0; 719 double firstSeen = -1.0; 720 double lastSeen = -1.0; 721 722 idx = str_to_val_idx(tap_rec->type_string, message_type_values); 723 if (idx < 0) 724 return TAP_PACKET_DONT_REDRAW; 725 726 table = g_array_index(stat_data->stat_tap_data->tables, stat_tap_table*, 0); 727 728 /* Update packets counter */ 729 asap_total_msgs++; 730 msg_data = stat_tap_get_field_data(table, idx, MESSAGES_COLUMN); 731 msg_data->value.uint_value++; 732 messages = msg_data->value.uint_value; 733 stat_tap_set_field_data(table, idx, MESSAGES_COLUMN, msg_data); 734 735 /* Update bytes counter */ 736 asap_total_bytes += tap_rec->size; 737 msg_data = stat_tap_get_field_data(table, idx, BYTES_COLUMN); 738 msg_data->value.uint_value += tap_rec->size; 739 bytes = msg_data->value.uint_value; 740 stat_tap_set_field_data(table, idx, BYTES_COLUMN, msg_data); 741 742 /* Update messages and bytes share */ 743 while (message_type_values[i].strptr) { 744 msg_data = stat_tap_get_field_data(table, i, MESSAGES_COLUMN); 745 const guint m = msg_data->value.uint_value; 746 msg_data = stat_tap_get_field_data(table, i, BYTES_COLUMN); 747 const guint b = msg_data->value.uint_value; 748 749 msg_data = stat_tap_get_field_data(table, i, MESSAGES_SHARE_COLUMN); 750 msg_data->type = TABLE_ITEM_FLOAT; 751 msg_data->value.float_value = 100.0 * m / (double)asap_total_msgs; 752 stat_tap_set_field_data(table, i, MESSAGES_SHARE_COLUMN, msg_data); 753 754 msg_data = stat_tap_get_field_data(table, i, BYTES_SHARE_COLUMN); 755 msg_data->type = TABLE_ITEM_FLOAT; 756 msg_data->value.float_value = 100.0 * b / (double)asap_total_bytes; 757 stat_tap_set_field_data(table, i, BYTES_SHARE_COLUMN, msg_data); 758 i++; 759 } 760 761 /* Update first seen time */ 762 if (pinfo->presence_flags & PINFO_HAS_TS) { 763 msg_data = stat_tap_get_field_data(table, idx, FIRST_SEEN_COLUMN); 764 msg_data->type = TABLE_ITEM_FLOAT; 765 msg_data->value.float_value = MIN(msg_data->value.float_value, nstime_to_sec(&pinfo->rel_ts)); 766 firstSeen = msg_data->value.float_value; 767 stat_tap_set_field_data(table, idx, FIRST_SEEN_COLUMN, msg_data); 768 } 769 770 /* Update last seen time */ 771 if (pinfo->presence_flags & PINFO_HAS_TS) { 772 msg_data = stat_tap_get_field_data(table, idx, LAST_SEEN_COLUMN); 773 msg_data->type = TABLE_ITEM_FLOAT; 774 msg_data->value.float_value = MAX(msg_data->value.float_value, nstime_to_sec(&pinfo->rel_ts)); 775 lastSeen = msg_data->value.float_value; 776 stat_tap_set_field_data(table, idx, LAST_SEEN_COLUMN, msg_data); 777 } 778 779 if ((lastSeen - firstSeen) > 0.0) { 780 /* Update interval */ 781 msg_data = stat_tap_get_field_data(table, idx, INTERVAL_COLUMN); 782 msg_data->type = TABLE_ITEM_FLOAT; 783 msg_data->value.float_value = lastSeen - firstSeen; 784 stat_tap_set_field_data(table, idx, INTERVAL_COLUMN, msg_data); 785 786 /* Update message rate */ 787 msg_data = stat_tap_get_field_data(table, idx, MESSAGE_RATE_COLUMN); 788 msg_data->type = TABLE_ITEM_FLOAT; 789 msg_data->value.float_value = messages / (lastSeen - firstSeen); 790 stat_tap_set_field_data(table, idx, MESSAGE_RATE_COLUMN, msg_data); 791 792 /* Update byte rate */ 793 msg_data = stat_tap_get_field_data(table, idx, BYTE_RATE_COLUMN); 794 msg_data->type = TABLE_ITEM_FLOAT; 795 msg_data->value.float_value = bytes / (lastSeen - firstSeen); 796 stat_tap_set_field_data(table, idx, BYTE_RATE_COLUMN, msg_data); 797 } 798 799 return TAP_PACKET_REDRAW; 800 } 801 802 static void 803 asap_stat_reset(stat_tap_table* table) 804 { 805 guint element; 806 stat_tap_table_item_type* item_data; 807 808 for (element = 0; element < table->num_elements; element++) { 809 item_data = stat_tap_get_field_data(table, element, MESSAGES_COLUMN); 810 item_data->value.uint_value = 0; 811 stat_tap_set_field_data(table, element, MESSAGES_COLUMN, item_data); 812 813 item_data = stat_tap_get_field_data(table, element, MESSAGES_SHARE_COLUMN); 814 item_data->type = TABLE_ITEM_NONE; 815 item_data->value.float_value = -1.0; 816 stat_tap_set_field_data(table, element, MESSAGES_SHARE_COLUMN, item_data); 817 818 item_data = stat_tap_get_field_data(table, element, BYTES_COLUMN); 819 item_data->value.uint_value = 0; 820 stat_tap_set_field_data(table, element, BYTES_COLUMN, item_data); 821 822 item_data = stat_tap_get_field_data(table, element, BYTES_SHARE_COLUMN); 823 item_data->type = TABLE_ITEM_NONE; 824 item_data->value.float_value = -1.0; 825 stat_tap_set_field_data(table, element, BYTES_SHARE_COLUMN, item_data); 826 827 item_data = stat_tap_get_field_data(table, element, FIRST_SEEN_COLUMN); 828 item_data->type = TABLE_ITEM_NONE; 829 item_data->value.float_value = DBL_MAX; 830 stat_tap_set_field_data(table, element, FIRST_SEEN_COLUMN, item_data); 831 832 item_data = stat_tap_get_field_data(table, element, LAST_SEEN_COLUMN); 833 item_data->type = TABLE_ITEM_NONE; 834 item_data->value.float_value = DBL_MIN; 835 stat_tap_set_field_data(table, element, LAST_SEEN_COLUMN, item_data); 836 837 item_data = stat_tap_get_field_data(table, element, INTERVAL_COLUMN); 838 item_data->type = TABLE_ITEM_NONE; 839 item_data->value.float_value = -1.0; 840 stat_tap_set_field_data(table, element, INTERVAL_COLUMN, item_data); 841 842 item_data = stat_tap_get_field_data(table, element, MESSAGE_RATE_COLUMN); 843 item_data->type = TABLE_ITEM_NONE; 844 item_data->value.float_value = -1.0; 845 stat_tap_set_field_data(table, element, MESSAGE_RATE_COLUMN, item_data); 846 847 item_data = stat_tap_get_field_data(table, element, BYTE_RATE_COLUMN); 848 item_data->type = TABLE_ITEM_NONE; 849 item_data->value.float_value = -1.0; 850 stat_tap_set_field_data(table, element, BYTE_RATE_COLUMN, item_data); 851 } 852 asap_total_msgs = 0; 853 asap_total_bytes = 0; 854 } 855 856 /* Register the protocol with Wireshark */ 857 void 858 proto_register_asap(void) 859 { 860 861 /* Setup list of header fields */ 862 static hf_register_info hf[] = { 863 { &hf_message_type, { "Type", "asap.message_type", FT_UINT8, BASE_DEC, VALS(message_type_values), 0x0, NULL, HFILL } }, 864 { &hf_message_flags, { "Flags", "asap.message_flags", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL } }, 865 { &hf_message_length, { "Length", "asap.message_length", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } }, 866 { &hf_cause_code, { "Cause Code", "asap.cause_code", FT_UINT16, BASE_HEX, VALS(cause_code_values), 0x0, NULL, HFILL } }, 867 { &hf_cause_length, { "Cause Length", "asap.cause_length", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } }, 868 { &hf_cause_info, { "Cause Info", "asap.cause_info", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } }, 869 { &hf_cause_padding, { "Padding", "asap.cause_padding", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } }, 870 { &hf_parameter_type, { "Parameter Type", "asap.parameter_type", FT_UINT16, BASE_HEX, VALS(parameter_type_values), 0x0, NULL, HFILL } }, 871 { &hf_parameter_length, { "Parameter Length", "asap.parameter_length", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } }, 872 { &hf_parameter_value, { "Parameter Value", "asap.parameter_value", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } }, 873 { &hf_parameter_padding, { "Padding", "asap.parameter_padding", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } }, 874 { &hf_parameter_ipv4_address, { "IP Version 4 Address", "asap.ipv4_address", FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL } }, 875 { &hf_parameter_ipv6_address, { "IP Version 6 Address", "asap.ipv6_address", FT_IPv6, BASE_NONE, NULL, 0x0, NULL, HFILL } }, 876 { &hf_dccp_port, { "Port", "asap.dccp_transport_port", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } }, 877 { &hf_dccp_reserved, { "Reserved", "asap.dccp_transport_reserved", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } }, 878 { &hf_dccp_service_code, { "Service Code", "asap.dccp_transport_service_code", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } }, 879 { &hf_sctp_port, { "Port", "asap.sctp_transport_port", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } }, 880 { &hf_transport_use, { "Transport Use", "asap.transport_use", FT_UINT16, BASE_DEC, VALS(transport_use_values), 0x0, NULL, HFILL } }, 881 { &hf_tcp_port, { "Port", "asap.tcp_transport_port", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } }, 882 { &hf_udp_port, { "Port", "asap.udp_transport_port", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } }, 883 { &hf_udp_reserved, { "Reserved", "asap.udp_transport_reserved", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } }, 884 { &hf_udp_lite_port, { "Port", "asap.udp_lite_transport_port", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } }, 885 { &hf_udp_lite_reserved, { "Reserved", "asap.udp_lite_transport_reserved", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } }, 886 { &hf_policy_type, { "Policy Type", "asap.pool_member_selection_policy_type", FT_UINT32, BASE_HEX, VALS(policy_type_values), 0x0, NULL, HFILL } }, 887 { &hf_policy_weight, { "Policy Weight", "asap.pool_member_selection_policy_weight", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL } }, 888 { &hf_policy_priority, { "Policy Priority", "asap.pool_member_selection_policy_priority", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL } }, 889 { &hf_policy_load, { "Policy Load", "asap.pool_member_selection_policy_load", FT_DOUBLE, BASE_NONE, NULL, 0x0, NULL, HFILL } }, 890 { &hf_policy_degradation, { "Policy Degradation", "asap.pool_member_selection_policy_degradation", FT_DOUBLE, BASE_NONE, NULL, 0x0, NULL, HFILL } }, 891 { &hf_policy_loaddpf, { "Policy Load DPF", "asap.pool_member_selection_policy_load_dpf", FT_DOUBLE, BASE_NONE, NULL, 0x0, NULL, HFILL } }, 892 { &hf_policy_weightdpf, { "Policy Weight DPF", "asap.pool_member_selection_policy_weight_dpf", FT_DOUBLE, BASE_NONE, NULL, 0x0, NULL, HFILL } }, 893 { &hf_policy_distance, { "Policy Distance", "asap.pool_member_selection_policy_distance", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL } }, 894 { &hf_policy_value, { "Policy Value", "asap.pool_member_selection_policy_value", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } }, 895 { &hf_pool_handle, { "Pool Handle", "asap.pool_handle_pool_handle", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } }, 896 { &hf_pe_pe_identifier, { "PE Identifier", "asap.pool_element_pe_identifier", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL } }, 897 { &hf_home_enrp_id, { "Home ENRP Server Identifier", "asap.pool_element_home_enrp_server_identifier", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL } }, 898 { &hf_reg_life, { "Registration Life", "asap.pool_element_registration_life", FT_INT32, BASE_DEC|BASE_UNIT_STRING, &units_milliseconds, 0x0, NULL, HFILL } }, 899 { &hf_cookie, { "Cookie", "asap.cookie", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } }, 900 { &hf_pe_identifier, { "PE Identifier", "asap.pe_identifier", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL } }, 901 { &hf_pe_checksum, { "PE Checksum", "asap.pe_checksum", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL } }, 902 { &hf_hropt_items, { "Items", "asap.hropt_items", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL } }, 903 { &hf_server_identifier, { "Server Identifier", "asap.server_identifier", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL } }, 904 { &hf_home_enrp_server_bit, { "H Bit", "asap.h_bit", FT_BOOLEAN, 8, TFS(&home_enrp_server_bit_value), HOME_ENRP_SERVER_BIT_MASK, NULL, HFILL } }, 905 { &hf_reject_bit, { "R Bit", "asap.r_bit", FT_BOOLEAN, 8, TFS(&reject_bit_value), REJECT_BIT_MASK, NULL, HFILL } }, 906 }; 907 908 /* Setup protocol subtree array */ 909 static gint *ett[] = { 910 &ett_asap, 911 &ett_asap_flags, 912 &ett_asap_parameter, 913 &ett_asap_cause, 914 }; 915 916 static tap_param asap_stat_params[] = { 917 { PARAM_FILTER, "filter", "Filter", NULL, TRUE } 918 }; 919 920 static stat_tap_table_ui asap_stat_table = { 921 REGISTER_STAT_GROUP_RSERPOOL, 922 "ASAP Statistics", 923 "asap", 924 "asap,stat", 925 asap_stat_init, 926 asap_stat_packet, 927 asap_stat_reset, 928 NULL, 929 NULL, 930 sizeof(asap_stat_fields)/sizeof(stat_tap_table_item), asap_stat_fields, 931 sizeof(asap_stat_params)/sizeof(tap_param), asap_stat_params, 932 NULL, 933 0 934 }; 935 936 /* Register the protocol name and description */ 937 proto_asap = proto_register_protocol("Aggregate Server Access Protocol", "ASAP", "asap"); 938 939 /* Required function calls to register the header fields and subtrees used */ 940 proto_register_field_array(proto_asap, hf, array_length(hf)); 941 proto_register_subtree_array(ett, array_length(ett)); 942 asap_tap = register_tap("asap"); 943 944 register_stat_tap_table_ui(&asap_stat_table); 945 } 946 947 void 948 proto_reg_handoff_asap(void) 949 { 950 dissector_handle_t asap_handle; 951 952 asap_handle = create_dissector_handle(dissect_asap, proto_asap); 953 dissector_add_uint("sctp.ppi", ASAP_PAYLOAD_PROTOCOL_ID, asap_handle); 954 dissector_add_uint_with_preference("udp.port", ASAP_UDP_PORT, asap_handle); 955 dissector_add_uint_with_preference("tcp.port", ASAP_TCP_PORT, asap_handle); 956 dissector_add_uint("sctp.port", ASAP_SCTP_PORT, asap_handle); 957 } 958 959 /* 960 * Editor modelines - https://www.wireshark.org/tools/modelines.html 961 * 962 * Local Variables: 963 * c-basic-offset: 2 964 * tab-width: 8 965 * indent-tabs-mode: nil 966 * End: 967 * 968 * ex: set shiftwidth=2 tabstop=8 expandtab: 969 * :indentSize=2:tabSize=8:noTabs=true: 970 */ 971