| File: | epan/conversation.c |
| Warning: | line 3300, column 5 Null returned from a function that is expected to return a non-null value |
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| 1 | /* conversation.c | |||
| 2 | * Routines for building lists of packets that are part of a "conversation" | |||
| 3 | * | |||
| 4 | * Wireshark - Network traffic analyzer | |||
| 5 | * By Gerald Combs <gerald@wireshark.org> | |||
| 6 | * Copyright 1998 Gerald Combs | |||
| 7 | * | |||
| 8 | * SPDX-License-Identifier: GPL-2.0-or-later | |||
| 9 | */ | |||
| 10 | ||||
| 11 | #include "config.h" | |||
| 12 | ||||
| 13 | #include <string.h> | |||
| 14 | ||||
| 15 | #include <glib.h> | |||
| 16 | ||||
| 17 | #include <wiretap/wtap.h> | |||
| 18 | #include <wsutil/array.h> | |||
| 19 | ||||
| 20 | #include "packet.h" | |||
| 21 | #include "to_str.h" | |||
| 22 | #include "conversation.h" | |||
| 23 | ||||
| 24 | // The conversation database is a map of maps that contain conversation_t's. | |||
| 25 | // Top-level map keys are strings that describe each conversation type. | |||
| 26 | // Second-level map keys are conversation_element_t arrays. | |||
| 27 | // { | |||
| 28 | // "uint,endpoint": { | |||
| 29 | // [ { type: CE_ADDR, addr_val: 10.20.30.40}, { type: CE_PORT, uint_val: 80 } ... ]: <conversation_t> | |||
| 30 | // [ { type: CE_ADDR, addr_val: 1.1.1.1}, { type: CE_PORT, uint_val: 53 } ... ]: <conversation_t> | |||
| 31 | // } | |||
| 32 | // } | |||
| 33 | // Instead of using strings as keys we could bit-shift conversation endpoint types | |||
| 34 | // into a uint64_t, e.g. 0x0000000102010200 for CE_ADDRESS,CE_PORT,CE_ADDRESS,CE_PORT,CE_CONVERSATION_TYPE. | |||
| 35 | // We could also use this to prepend a type+length indicator for element arrays. | |||
| 36 | ||||
| 37 | /* define DEBUG_CONVERSATION for pretty debug printing */ | |||
| 38 | /* #define DEBUG_CONVERSATION */ | |||
| 39 | #include "conversation_debug.h" | |||
| 40 | ||||
| 41 | #ifdef DEBUG_CONVERSATION | |||
| 42 | int _debug_conversation_indent; | |||
| 43 | #endif | |||
| 44 | ||||
| 45 | /* | |||
| 46 | * We could use an element list here, but this is effectively a parameter list | |||
| 47 | * for find_conversation and is more compact. | |||
| 48 | */ | |||
| 49 | struct conversation_addr_port_endpoints { | |||
| 50 | address addr1; | |||
| 51 | address addr2; | |||
| 52 | uint32_t port1; | |||
| 53 | uint32_t port2; | |||
| 54 | conversation_type ctype; | |||
| 55 | }; | |||
| 56 | ||||
| 57 | /* Element offsets for address+port conversations */ | |||
| 58 | enum { | |||
| 59 | ADDR1_IDX, | |||
| 60 | PORT1_IDX, | |||
| 61 | ADDR2_IDX, | |||
| 62 | PORT2_IDX, | |||
| 63 | ENDP_EXACT_IDX, | |||
| 64 | EXACT_IDX_COUNT, | |||
| 65 | ADDRS_IDX_COUNT = PORT2_IDX, | |||
| 66 | PORT2_NO_ADDR2_IDX = ADDR2_IDX, | |||
| 67 | ENDP_NO_ADDR2_IDX = PORT2_IDX, | |||
| 68 | ENDP_NO_PORT2_IDX = PORT2_IDX, | |||
| 69 | ENDP_NO_ADDR2_PORT2_IDX = ADDR2_IDX, | |||
| 70 | NO_ADDR2_IDX_COUNT = ENDP_EXACT_IDX, | |||
| 71 | NO_PORT2_IDX_COUNT = ENDP_EXACT_IDX, | |||
| 72 | NO_ADDR2_PORT2_IDX_COUNT = PORT2_IDX, | |||
| 73 | ENDP_NO_PORTS_IDX = ADDR2_IDX, | |||
| 74 | ERR_PKTS_COUNT = PORT2_IDX | |||
| 75 | }; | |||
| 76 | ||||
| 77 | /* Element offsets for the deinterlacer conversations */ | |||
| 78 | enum { | |||
| 79 | DEINTR_ADDR1_IDX, | |||
| 80 | DEINTR_ADDR2_IDX, | |||
| 81 | DEINTR_KEY1_IDX, | |||
| 82 | DEINTR_KEY2_IDX, | |||
| 83 | DEINTR_KEY3_IDX, | |||
| 84 | DEINTR_ENDP_IDX | |||
| 85 | }; | |||
| 86 | ||||
| 87 | /* Element offsets for the deinterlaced conversations */ | |||
| 88 | enum { | |||
| 89 | DEINTD_ADDR1_IDX, | |||
| 90 | DEINTD_ADDR2_IDX, | |||
| 91 | DEINTD_PORT1_IDX, | |||
| 92 | DEINTD_PORT2_IDX, | |||
| 93 | DEINTD_ENDP_EXACT_IDX, | |||
| 94 | DEINTD_EXACT_IDX_COUNT, | |||
| 95 | DEINTD_ADDRS_IDX_COUNT = DEINTD_PORT2_IDX, | |||
| 96 | DEINTD_ENDP_NO_PORTS_IDX = DEINTD_PORT1_IDX, | |||
| 97 | DEINTD_NO_ADDR2_IDX_COUNT = DEINTD_EXACT_IDX_COUNT, | |||
| 98 | DEINTD_NO_PORT2_IDX_COUNT = DEINTD_EXACT_IDX_COUNT, | |||
| 99 | DEINTD_NO_ADDR2_PORT2_IDX_COUNT = DEINTD_ENDP_EXACT_IDX | |||
| 100 | }; | |||
| 101 | ||||
| 102 | /* Names for conversation_element_type values. */ | |||
| 103 | static const char *type_names[] = { | |||
| 104 | "endpoint", | |||
| 105 | "address", | |||
| 106 | "port", | |||
| 107 | "string", | |||
| 108 | "uint", | |||
| 109 | "uint64", | |||
| 110 | "int", | |||
| 111 | "int64", | |||
| 112 | "blob", | |||
| 113 | }; | |||
| 114 | ||||
| 115 | /* | |||
| 116 | * Hash table of hash tables for conversations identified by element lists. | |||
| 117 | */ | |||
| 118 | static wmem_map_t *conversation_hashtable_element_list; | |||
| 119 | ||||
| 120 | /* | |||
| 121 | * Hash table for conversations based on addresses only | |||
| 122 | */ | |||
| 123 | static wmem_map_t *conversation_hashtable_exact_addr; | |||
| 124 | ||||
| 125 | /* | |||
| 126 | * Hash table for conversations with no wildcards. | |||
| 127 | */ | |||
| 128 | static wmem_map_t *conversation_hashtable_exact_addr_port; | |||
| 129 | ||||
| 130 | /* | |||
| 131 | * Hash table for conversations with one wildcard address. | |||
| 132 | */ | |||
| 133 | static wmem_map_t *conversation_hashtable_no_addr2; | |||
| 134 | ||||
| 135 | /* | |||
| 136 | * Hash table for conversations with one wildcard port. | |||
| 137 | */ | |||
| 138 | static wmem_map_t *conversation_hashtable_no_port2; | |||
| 139 | ||||
| 140 | /* | |||
| 141 | * Hash table for conversations with one wildcard address and port. | |||
| 142 | */ | |||
| 143 | static wmem_map_t *conversation_hashtable_no_addr2_or_port2; | |||
| 144 | ||||
| 145 | /* | |||
| 146 | * Hash table for conversations with a single unsigned ID number. | |||
| 147 | */ | |||
| 148 | static wmem_map_t *conversation_hashtable_id; | |||
| 149 | ||||
| 150 | /* | |||
| 151 | * Hash table for conversations with no wildcards, and an anchor | |||
| 152 | */ | |||
| 153 | static wmem_map_t *conversation_hashtable_exact_addr_port_anc = NULL((void*)0); | |||
| 154 | ||||
| 155 | /* | |||
| 156 | * Hash table for conversations based on addresses only, and an anchor | |||
| 157 | */ | |||
| 158 | static wmem_map_t *conversation_hashtable_exact_addr_anc = NULL((void*)0); | |||
| 159 | ||||
| 160 | /* | |||
| 161 | * Hash table for conversations with one wildcard address, and an anchor | |||
| 162 | */ | |||
| 163 | static wmem_map_t *conversation_hashtable_no_addr2_anc = NULL((void*)0); | |||
| 164 | ||||
| 165 | /* | |||
| 166 | * Hash table for conversations with one wildcard port, and an anchor | |||
| 167 | */ | |||
| 168 | static wmem_map_t *conversation_hashtable_no_port2_anc = NULL((void*)0); | |||
| 169 | ||||
| 170 | /* | |||
| 171 | * Hash table for conversations with one wildcard address and port, and an anchor. | |||
| 172 | */ | |||
| 173 | static wmem_map_t *conversation_hashtable_no_addr2_or_port2_anc; | |||
| 174 | ||||
| 175 | /* | |||
| 176 | * Hash table for deinterlacing conversations (typically L1 or L2) | |||
| 177 | */ | |||
| 178 | static wmem_map_t *conversation_hashtable_deinterlacer = NULL((void*)0); | |||
| 179 | ||||
| 180 | /* | |||
| 181 | * Hash table for tracking conversations involved in error packets. | |||
| 182 | * Conversations stored here don't have an autonomous existence, | |||
| 183 | * strictly speaking, but are a reference to other ones stored in | |||
| 184 | * other tables (such as conversation_hashtable_exact_addr_port). | |||
| 185 | * This table should be understood as an outgrowth of other tables. | |||
| 186 | * Note on this table keys: they are composed of 3 elements: | |||
| 187 | * id : the conv_index for this conversation in this table | |||
| 188 | * rid : reference conv_index for the transport conversation | |||
| 189 | * stored in table conversation_hashtable_exact_addr_port | |||
| 190 | * ctype: conversation type of the transport conversation | |||
| 191 | */ | |||
| 192 | static wmem_map_t *conversation_hashtable_err_pkts = NULL((void*)0); | |||
| 193 | ||||
| 194 | static uint32_t new_index; | |||
| 195 | ||||
| 196 | /* | |||
| 197 | * Placeholder for address-less conversations. | |||
| 198 | */ | |||
| 199 | static address null_address_ = ADDRESS_INIT_NONE{AT_NONE, 0, ((void*)0), ((void*)0)}; | |||
| 200 | ||||
| 201 | ||||
| 202 | /* Element count including the terminating CE_CONVERSATION_TYPE */ | |||
| 203 | #define MAX_CONVERSATION_ELEMENTS8 8 // Arbitrary. | |||
| 204 | static size_t | |||
| 205 | conversation_element_count(conversation_element_t *elements) | |||
| 206 | { | |||
| 207 | size_t count = 0; | |||
| 208 | while (elements[count].type != CE_CONVERSATION_TYPE) { | |||
| 209 | count++; | |||
| 210 | DISSECTOR_ASSERT(count < MAX_CONVERSATION_ELEMENTS)((void) ((count < 8) ? (void)0 : (proto_report_dissector_bug ("%s:%u: failed assertion \"%s\"", "epan/conversation.c", 210 , "count < 8")))); | |||
| 211 | } | |||
| 212 | count++; | |||
| 213 | // Keying on the endpoint type alone isn't very useful. | |||
| 214 | DISSECTOR_ASSERT(count > 1)((void) ((count > 1) ? (void)0 : (proto_report_dissector_bug ("%s:%u: failed assertion \"%s\"", "epan/conversation.c", 214 , "count > 1")))); | |||
| 215 | return count; | |||
| 216 | } | |||
| 217 | ||||
| 218 | static conversation_type | |||
| 219 | conversation_get_key_type(conversation_element_t *elements) | |||
| 220 | { | |||
| 221 | size_t count = 0; | |||
| 222 | while (elements[count].type != CE_CONVERSATION_TYPE) { | |||
| 223 | count++; | |||
| 224 | DISSECTOR_ASSERT(count < MAX_CONVERSATION_ELEMENTS)((void) ((count < 8) ? (void)0 : (proto_report_dissector_bug ("%s:%u: failed assertion \"%s\"", "epan/conversation.c", 224 , "count < 8")))); | |||
| 225 | } | |||
| 226 | return elements[count].conversation_type_val; | |||
| 227 | } | |||
| 228 | ||||
| 229 | /* Create a string based on element types. */ | |||
| 230 | static char* | |||
| 231 | conversation_element_list_name(wmem_allocator_t *allocator, conversation_element_t *elements) { | |||
| 232 | char *sep = ""; | |||
| 233 | wmem_strbuf_t *conv_hash_group = wmem_strbuf_new(allocator, ""); | |||
| 234 | size_t element_count = conversation_element_count(elements); | |||
| 235 | for (size_t i = 0; i < element_count; i++) { | |||
| 236 | conversation_element_t *cur_el = &elements[i]; | |||
| 237 | DISSECTOR_ASSERT(cur_el->type < array_length(type_names))((void) ((cur_el->type < (sizeof (type_names) / sizeof ( type_names)[0])) ? (void)0 : (proto_report_dissector_bug("%s:%u: failed assertion \"%s\"" , "epan/conversation.c", 237, "cur_el->type < (sizeof (type_names) / sizeof (type_names)[0])" )))); | |||
| 238 | wmem_strbuf_append_printf(conv_hash_group, "%s%s", sep, type_names[cur_el->type]); | |||
| 239 | sep = ","; | |||
| 240 | } | |||
| 241 | return wmem_strbuf_finalize(conv_hash_group); | |||
| 242 | } | |||
| 243 | ||||
| 244 | #if 0 // debugging | |||
| 245 | static char* conversation_element_list_values(conversation_element_t *elements) { | |||
| 246 | char *sep = ""; | |||
| 247 | GString *value_str = g_string_new(""); | |||
| 248 | size_t element_count = conversation_element_count(elements); | |||
| 249 | for (size_t i = 0; i < element_count; i++) { | |||
| 250 | conversation_element_t *cur_el = &elements[i]; | |||
| 251 | g_string_append_printf(value_str, "%s%s=", sep, type_names[cur_el->type]); | |||
| 252 | sep = ","; | |||
| 253 | switch (cur_el->type) { | |||
| 254 | case CE_CONVERSATION_TYPE: | |||
| 255 | g_string_append_printf(value_str, "%d", cur_el->conversation_type_val); | |||
| 256 | break; | |||
| 257 | case CE_ADDRESS: | |||
| 258 | { | |||
| 259 | char *as = address_to_str(NULL((void*)0), &cur_el->addr_val); | |||
| 260 | g_string_append(value_str, as)(__builtin_constant_p (as) ? __extension__ ({ const char * const __val = (as); g_string_append_len_inline (value_str, __val, ( __val != ((void*)0)) ? (gssize) strlen (((__val) + !(__val))) : (gssize) -1); }) : g_string_append_len_inline (value_str, as , (gssize) -1)); | |||
| 261 | g_free(as); | |||
| 262 | } | |||
| 263 | break; | |||
| 264 | case CE_PORT: | |||
| 265 | g_string_append_printf(value_str, "%u", cur_el->port_val); | |||
| 266 | break; | |||
| 267 | case CE_STRING: | |||
| 268 | g_string_append(value_str, cur_el->str_val)(__builtin_constant_p (cur_el->str_val) ? __extension__ ({ const char * const __val = (cur_el->str_val); g_string_append_len_inline (value_str, __val, (__val != ((void*)0)) ? (gssize) strlen ( ((__val) + !(__val))) : (gssize) -1); }) : g_string_append_len_inline (value_str, cur_el->str_val, (gssize) -1)); | |||
| 269 | break; | |||
| 270 | case CE_UINT: | |||
| 271 | g_string_append_printf(value_str, "%u", cur_el->uint_val); | |||
| 272 | break; | |||
| 273 | case CE_UINT64: | |||
| 274 | g_string_append_printf(value_str, "%" PRIu64"l" "u", cur_el->uint64_val); | |||
| 275 | break; | |||
| 276 | case CE_INT: | |||
| 277 | g_string_append_printf(value_str, "%d", cur_el->int_val); | |||
| 278 | break; | |||
| 279 | case CE_INT64: | |||
| 280 | g_string_append_printf(value_str, "%" PRId64"l" "d", cur_el->int64_val); | |||
| 281 | break; | |||
| 282 | case CE_BLOB: | |||
| 283 | { | |||
| 284 | size_t l; | |||
| 285 | uint8_t const *p; | |||
| 286 | for (l = cur_el->blob.len, p = cur_el->blob.val; l > 0; l--, p++) | |||
| 287 | g_string_append_printf(value_str, "%02x", *p); | |||
| 288 | } | |||
| 289 | break; | |||
| 290 | } | |||
| 291 | } | |||
| 292 | return g_string_free(value_str, FALSE)(__builtin_constant_p ((0)) ? (((0)) ? (g_string_free) ((value_str ), ((0))) : g_string_free_and_steal (value_str)) : (g_string_free ) ((value_str), ((0)))); | |||
| 293 | } | |||
| 294 | #endif | |||
| 295 | ||||
| 296 | static bool_Bool | |||
| 297 | is_no_addr2_key(conversation_element_t *key) | |||
| 298 | { | |||
| 299 | if (key[ADDR1_IDX].type == CE_ADDRESS && key[PORT1_IDX].type == CE_PORT | |||
| 300 | && key[PORT2_NO_ADDR2_IDX].type == CE_PORT && key[ENDP_NO_ADDR2_IDX].type == CE_CONVERSATION_TYPE) { | |||
| 301 | return true1; | |||
| 302 | } | |||
| 303 | return false0; | |||
| 304 | } | |||
| 305 | ||||
| 306 | static bool_Bool | |||
| 307 | is_no_port2_key(conversation_element_t *key) | |||
| 308 | { | |||
| 309 | if (key[ADDR1_IDX].type == CE_ADDRESS && key[PORT1_IDX].type == CE_PORT | |||
| 310 | && key[ADDR2_IDX].type == CE_ADDRESS && key[ENDP_NO_PORT2_IDX].type == CE_CONVERSATION_TYPE) { | |||
| 311 | return true1; | |||
| 312 | } | |||
| 313 | return false0; | |||
| 314 | } | |||
| 315 | ||||
| 316 | static bool_Bool | |||
| 317 | is_no_addr2_port2_key(conversation_element_t *key) | |||
| 318 | { | |||
| 319 | if (key[ADDR1_IDX].type == CE_ADDRESS && key[PORT1_IDX].type == CE_PORT | |||
| 320 | && key[ENDP_NO_ADDR2_PORT2_IDX].type == CE_CONVERSATION_TYPE) { | |||
| 321 | return true1; | |||
| 322 | } | |||
| 323 | return false0; | |||
| 324 | } | |||
| 325 | ||||
| 326 | /* | |||
| 327 | * Creates a new conversation with known endpoints based on a conversation | |||
| 328 | * created with the CONVERSATION_TEMPLATE option while keeping the | |||
| 329 | * conversation created with the CONVERSATION_TEMPLATE option so it can still | |||
| 330 | * match future connections. | |||
| 331 | * | |||
| 332 | * Passing a pointer to a conversation whose options mask does not include | |||
| 333 | * CONVERSATION_TEMPLATE or where the conversation's protocol type (ptype) | |||
| 334 | * indicates a non-connnection oriented protocol will return the conversation | |||
| 335 | * without changes. | |||
| 336 | * | |||
| 337 | * addr2 and port2 are used in the function if their respective conversation | |||
| 338 | * options bits are set (NO_ADDR2 and NO_PORT2). | |||
| 339 | */ | |||
| 340 | static conversation_t * | |||
| 341 | conversation_create_from_template(conversation_t *conversation, const address *addr2, const uint32_t port2) | |||
| 342 | { | |||
| 343 | conversation_type ctype = conversation_get_key_type(conversation->key_ptr); | |||
| 344 | /* | |||
| 345 | * Add a new conversation and keep the conversation template only if the | |||
| 346 | * CONVERSATION_TEMPLATE bit is set for a connection oriented protocol. | |||
| 347 | */ | |||
| 348 | if (conversation->options & CONVERSATION_TEMPLATE0x08 && ctype != CONVERSATION_UDP) | |||
| 349 | { | |||
| 350 | /* | |||
| 351 | * Set up a new options mask where the conversation template bit and the | |||
| 352 | * bits for absence of a second address and port pair have been removed. | |||
| 353 | */ | |||
| 354 | conversation_t *new_conversation_from_template; | |||
| 355 | unsigned options = conversation->options & ~(CONVERSATION_TEMPLATE0x08 | NO_ADDR20x01 | NO_PORT20x02); | |||
| 356 | ||||
| 357 | /* | |||
| 358 | * Are both the NO_ADDR2 and NO_PORT2 wildcards set in the options mask? | |||
| 359 | */ | |||
| 360 | if (conversation->options & NO_ADDR20x01 && conversation->options & NO_PORT20x02 | |||
| 361 | && is_no_addr2_port2_key(conversation->key_ptr)) | |||
| 362 | { | |||
| 363 | /* | |||
| 364 | * The conversation template was created without knowledge of both | |||
| 365 | * the second address as well as the second port. Create a new | |||
| 366 | * conversation with new 2nd address and 2nd port. | |||
| 367 | */ | |||
| 368 | new_conversation_from_template = | |||
| 369 | conversation_new(conversation->setup_frame, | |||
| 370 | &conversation->key_ptr[ADDR1_IDX].addr_val, addr2, | |||
| 371 | ctype, conversation->key_ptr[PORT1_IDX].port_val, | |||
| 372 | port2, options); | |||
| 373 | } | |||
| 374 | else if (conversation->options & NO_PORT20x02 && is_no_port2_key(conversation->key_ptr)) | |||
| 375 | { | |||
| 376 | /* | |||
| 377 | * The conversation template was created without knowledge of port 2 | |||
| 378 | * only. Create a new conversation with new 2nd port. | |||
| 379 | */ | |||
| 380 | new_conversation_from_template = | |||
| 381 | conversation_new(conversation->setup_frame, | |||
| 382 | &conversation->key_ptr[ADDR1_IDX].addr_val, &conversation->key_ptr[ADDR2_IDX].addr_val, | |||
| 383 | ctype, conversation->key_ptr[PORT1_IDX].port_val, | |||
| 384 | port2, options); | |||
| 385 | } | |||
| 386 | else if (conversation->options & NO_ADDR20x01 && is_no_addr2_key(conversation->key_ptr)) | |||
| 387 | { | |||
| 388 | /* | |||
| 389 | * The conversation template was created without knowledge of address | |||
| 390 | * 2. Create a new conversation with new 2nd address. | |||
| 391 | */ | |||
| 392 | new_conversation_from_template = | |||
| 393 | conversation_new(conversation->setup_frame, | |||
| 394 | &conversation->key_ptr[ADDR1_IDX].addr_val, addr2, | |||
| 395 | ctype, conversation->key_ptr[PORT1_IDX].port_val, | |||
| 396 | conversation->key_ptr[PORT2_NO_ADDR2_IDX].port_val, options); | |||
| 397 | } | |||
| 398 | else | |||
| 399 | { | |||
| 400 | /* | |||
| 401 | * The CONVERSATION_TEMPLATE bit was set, but no other bit that the | |||
| 402 | * CONVERSATION_TEMPLATE bit controls is active. Just return the old | |||
| 403 | * conversation. | |||
| 404 | */ | |||
| 405 | return conversation; | |||
| 406 | } | |||
| 407 | ||||
| 408 | /* | |||
| 409 | * Set the protocol dissector used for the template conversation as | |||
| 410 | * the handler of the new conversation as well. | |||
| 411 | */ | |||
| 412 | new_conversation_from_template->dissector_tree = conversation->dissector_tree; | |||
| 413 | ||||
| 414 | return new_conversation_from_template; | |||
| 415 | } | |||
| 416 | else | |||
| 417 | { | |||
| 418 | return conversation; | |||
| 419 | } | |||
| 420 | } | |||
| 421 | ||||
| 422 | /* | |||
| 423 | * Compute the hash value for two given element lists if the match | |||
| 424 | * is to be exact. | |||
| 425 | */ | |||
| 426 | /* https://web.archive.org/web/20070615045827/http://eternallyconfuzzled.com/tuts/algorithms/jsw_tut_hashing.aspx#existing | |||
| 427 | * (formerly at http://eternallyconfuzzled.com/tuts/algorithms/jsw_tut_hashing.aspx#existing) | |||
| 428 | * One-at-a-Time hash | |||
| 429 | */ | |||
| 430 | static unsigned | |||
| 431 | conversation_hash_element_list(const void *v) | |||
| 432 | { | |||
| 433 | const conversation_element_t *element = (const conversation_element_t*)v; | |||
| 434 | unsigned hash_val = 0; | |||
| 435 | ||||
| 436 | for (;;) { | |||
| 437 | // XXX We could use a hash_arbitrary_bytes routine. Abuse add_address_to_hash in the mean time. | |||
| 438 | address tmp_addr; | |||
| 439 | switch (element->type) { | |||
| 440 | case CE_ADDRESS: | |||
| 441 | hash_val = add_address_to_hash(hash_val, &element->addr_val); | |||
| 442 | break; | |||
| 443 | case CE_PORT: | |||
| 444 | tmp_addr.len = (int) sizeof(element->port_val); | |||
| 445 | tmp_addr.data = &element->port_val; | |||
| 446 | hash_val = add_address_to_hash(hash_val, &tmp_addr); | |||
| 447 | break; | |||
| 448 | case CE_STRING: | |||
| 449 | tmp_addr.len = (int) strlen(element->str_val); | |||
| 450 | tmp_addr.data = element->str_val; | |||
| 451 | hash_val = add_address_to_hash(hash_val, &tmp_addr); | |||
| 452 | break; | |||
| 453 | case CE_UINT: | |||
| 454 | tmp_addr.len = (int) sizeof(element->uint_val); | |||
| 455 | tmp_addr.data = &element->uint_val; | |||
| 456 | hash_val = add_address_to_hash(hash_val, &tmp_addr); | |||
| 457 | break; | |||
| 458 | case CE_UINT64: | |||
| 459 | tmp_addr.len = (int) sizeof(element->uint64_val); | |||
| 460 | tmp_addr.data = &element->uint64_val; | |||
| 461 | hash_val = add_address_to_hash(hash_val, &tmp_addr); | |||
| 462 | break; | |||
| 463 | case CE_INT: | |||
| 464 | tmp_addr.len = (int) sizeof(element->int_val); | |||
| 465 | tmp_addr.data = &element->int_val; | |||
| 466 | hash_val = add_address_to_hash(hash_val, &tmp_addr); | |||
| 467 | break; | |||
| 468 | case CE_INT64: | |||
| 469 | tmp_addr.len = (int) sizeof(element->int64_val); | |||
| 470 | tmp_addr.data = &element->int64_val; | |||
| 471 | hash_val = add_address_to_hash(hash_val, &tmp_addr); | |||
| 472 | break; | |||
| 473 | case CE_BLOB: | |||
| 474 | tmp_addr.len = (int) element->blob.len; | |||
| 475 | tmp_addr.data = element->blob.val; | |||
| 476 | hash_val = add_address_to_hash(hash_val, &tmp_addr); | |||
| 477 | break; | |||
| 478 | case CE_CONVERSATION_TYPE: | |||
| 479 | tmp_addr.len = (int) sizeof(element->conversation_type_val); | |||
| 480 | tmp_addr.data = &element->conversation_type_val; | |||
| 481 | hash_val = add_address_to_hash(hash_val, &tmp_addr); | |||
| 482 | goto done; | |||
| 483 | break; | |||
| 484 | } | |||
| 485 | element++; | |||
| 486 | } | |||
| 487 | ||||
| 488 | done: | |||
| 489 | hash_val += ( hash_val << 3 ); | |||
| 490 | hash_val ^= ( hash_val >> 11 ); | |||
| 491 | hash_val += ( hash_val << 15 ); | |||
| 492 | ||||
| 493 | return hash_val; | |||
| 494 | } | |||
| 495 | ||||
| 496 | /* | |||
| 497 | * Compare two conversation keys for an exact match. | |||
| 498 | */ | |||
| 499 | static gboolean | |||
| 500 | conversation_match_element_list(const void *v1, const void *v2) | |||
| 501 | { | |||
| 502 | const conversation_element_t *element1 = (const conversation_element_t*)v1; | |||
| 503 | const conversation_element_t *element2 = (const conversation_element_t*)v2; | |||
| 504 | ||||
| 505 | for (;;) { | |||
| 506 | if (element1->type != element2->type) { | |||
| 507 | return FALSE(0); | |||
| 508 | } | |||
| 509 | ||||
| 510 | switch (element1->type) { | |||
| 511 | case CE_ADDRESS: | |||
| 512 | if (!addresses_equal(&element1->addr_val, &element2->addr_val)) { | |||
| 513 | return FALSE(0); | |||
| 514 | } | |||
| 515 | break; | |||
| 516 | case CE_PORT: | |||
| 517 | if (element1->port_val != element2->port_val) { | |||
| 518 | return FALSE(0); | |||
| 519 | } | |||
| 520 | break; | |||
| 521 | case CE_STRING: | |||
| 522 | if (strcmp(element1->str_val, element2->str_val)) { | |||
| 523 | return FALSE(0); | |||
| 524 | } | |||
| 525 | break; | |||
| 526 | case CE_UINT: | |||
| 527 | if (element1->uint_val != element2->uint_val) { | |||
| 528 | return FALSE(0); | |||
| 529 | } | |||
| 530 | break; | |||
| 531 | case CE_UINT64: | |||
| 532 | if (element1->uint64_val != element2->uint64_val) { | |||
| 533 | return FALSE(0); | |||
| 534 | } | |||
| 535 | break; | |||
| 536 | case CE_INT: | |||
| 537 | if (element1->int_val != element2->int_val) { | |||
| 538 | return FALSE(0); | |||
| 539 | } | |||
| 540 | break; | |||
| 541 | case CE_INT64: | |||
| 542 | if (element1->int64_val != element2->int64_val) { | |||
| 543 | return FALSE(0); | |||
| 544 | } | |||
| 545 | break; | |||
| 546 | case CE_BLOB: | |||
| 547 | if (element1->blob.len != element2->blob.len || | |||
| 548 | (element1->blob.len > 0 && memcmp(element1->blob.val, element2->blob.val, element1->blob.len) != 0)) { | |||
| 549 | return FALSE(0); | |||
| 550 | } | |||
| 551 | break; | |||
| 552 | case CE_CONVERSATION_TYPE: | |||
| 553 | if (element1->conversation_type_val != element2->conversation_type_val) { | |||
| 554 | return FALSE(0); | |||
| 555 | } | |||
| 556 | goto done; | |||
| 557 | break; | |||
| 558 | } | |||
| 559 | element1++; | |||
| 560 | element2++; | |||
| 561 | } | |||
| 562 | ||||
| 563 | done: | |||
| 564 | // Everything matched so far. | |||
| 565 | return TRUE(!(0)); | |||
| 566 | } | |||
| 567 | ||||
| 568 | /** | |||
| 569 | * Create a new hash tables for conversations. | |||
| 570 | */ | |||
| 571 | void | |||
| 572 | conversation_init(void) | |||
| 573 | { | |||
| 574 | /* | |||
| 575 | * Free up any space allocated for conversation protocol data | |||
| 576 | * areas. | |||
| 577 | * | |||
| 578 | * We can free the space, as the structures it contains are | |||
| 579 | * pointed to by conversation data structures that were freed | |||
| 580 | * above. | |||
| 581 | */ | |||
| 582 | conversation_hashtable_element_list = wmem_map_new(wmem_epan_scope(), wmem_str_hash, g_str_equal); | |||
| 583 | ||||
| 584 | conversation_element_t exact_elements[EXACT_IDX_COUNT] = { | |||
| 585 | { CE_ADDRESS, .addr_val = ADDRESS_INIT_NONE{AT_NONE, 0, ((void*)0), ((void*)0)} }, | |||
| 586 | { CE_PORT, .port_val = 0 }, | |||
| 587 | { CE_ADDRESS, .addr_val = ADDRESS_INIT_NONE{AT_NONE, 0, ((void*)0), ((void*)0)} }, | |||
| 588 | { CE_PORT, .port_val = 0 }, | |||
| 589 | { CE_CONVERSATION_TYPE, .conversation_type_val = CONVERSATION_NONE } | |||
| 590 | }; | |||
| 591 | char *exact_map_key = conversation_element_list_name(wmem_epan_scope(), exact_elements); | |||
| 592 | conversation_hashtable_exact_addr_port = wmem_map_new_autoreset(wmem_epan_scope(), wmem_file_scope(), | |||
| 593 | conversation_hash_element_list, | |||
| 594 | conversation_match_element_list); | |||
| 595 | wmem_map_insert(conversation_hashtable_element_list, wmem_strdup(wmem_epan_scope(), exact_map_key), | |||
| 596 | conversation_hashtable_exact_addr_port); | |||
| 597 | ||||
| 598 | conversation_element_t addrs_elements[ADDRS_IDX_COUNT] = { | |||
| 599 | { CE_ADDRESS, .addr_val = ADDRESS_INIT_NONE{AT_NONE, 0, ((void*)0), ((void*)0)} }, | |||
| 600 | { CE_ADDRESS, .addr_val = ADDRESS_INIT_NONE{AT_NONE, 0, ((void*)0), ((void*)0)} }, | |||
| 601 | { CE_CONVERSATION_TYPE, .conversation_type_val = CONVERSATION_NONE } | |||
| 602 | }; | |||
| 603 | char *addrs_map_key = conversation_element_list_name(wmem_epan_scope(), addrs_elements); | |||
| 604 | conversation_hashtable_exact_addr = wmem_map_new_autoreset(wmem_epan_scope(), wmem_file_scope(), | |||
| 605 | conversation_hash_element_list, | |||
| 606 | conversation_match_element_list); | |||
| 607 | wmem_map_insert(conversation_hashtable_element_list, wmem_strdup(wmem_epan_scope(), addrs_map_key), | |||
| 608 | conversation_hashtable_exact_addr); | |||
| 609 | ||||
| 610 | conversation_element_t no_addr2_elements[NO_ADDR2_IDX_COUNT] = { | |||
| 611 | { CE_ADDRESS, .addr_val = ADDRESS_INIT_NONE{AT_NONE, 0, ((void*)0), ((void*)0)} }, | |||
| 612 | { CE_PORT, .port_val = 0 }, | |||
| 613 | { CE_PORT, .port_val = 0 }, | |||
| 614 | { CE_CONVERSATION_TYPE, .conversation_type_val = CONVERSATION_NONE } | |||
| 615 | }; | |||
| 616 | char *no_addr2_map_key = conversation_element_list_name(wmem_epan_scope(), no_addr2_elements); | |||
| 617 | conversation_hashtable_no_addr2 = wmem_map_new_autoreset(wmem_epan_scope(), wmem_file_scope(), | |||
| 618 | conversation_hash_element_list, | |||
| 619 | conversation_match_element_list); | |||
| 620 | wmem_map_insert(conversation_hashtable_element_list, wmem_strdup(wmem_epan_scope(), no_addr2_map_key), | |||
| 621 | conversation_hashtable_no_addr2); | |||
| 622 | ||||
| 623 | conversation_element_t no_port2_elements[NO_PORT2_IDX_COUNT] = { | |||
| 624 | { CE_ADDRESS, .addr_val = ADDRESS_INIT_NONE{AT_NONE, 0, ((void*)0), ((void*)0)} }, | |||
| 625 | { CE_PORT, .port_val = 0 }, | |||
| 626 | { CE_ADDRESS, .addr_val = ADDRESS_INIT_NONE{AT_NONE, 0, ((void*)0), ((void*)0)} }, | |||
| 627 | { CE_CONVERSATION_TYPE, .conversation_type_val = CONVERSATION_NONE } | |||
| 628 | }; | |||
| 629 | char *no_port2_map_key = conversation_element_list_name(wmem_epan_scope(), no_port2_elements); | |||
| 630 | conversation_hashtable_no_port2 = wmem_map_new_autoreset(wmem_epan_scope(), wmem_file_scope(), | |||
| 631 | conversation_hash_element_list, | |||
| 632 | conversation_match_element_list); | |||
| 633 | wmem_map_insert(conversation_hashtable_element_list, wmem_strdup(wmem_epan_scope(), no_port2_map_key), | |||
| 634 | conversation_hashtable_no_port2); | |||
| 635 | ||||
| 636 | conversation_element_t no_addr2_or_port2_elements[NO_ADDR2_PORT2_IDX_COUNT] = { | |||
| 637 | { CE_ADDRESS, .addr_val = ADDRESS_INIT_NONE{AT_NONE, 0, ((void*)0), ((void*)0)} }, | |||
| 638 | { CE_PORT, .port_val = 0 }, | |||
| 639 | { CE_CONVERSATION_TYPE, .conversation_type_val = CONVERSATION_NONE } | |||
| 640 | }; | |||
| 641 | char *no_addr2_or_port2_map_key = conversation_element_list_name(wmem_epan_scope(), no_addr2_or_port2_elements); | |||
| 642 | conversation_hashtable_no_addr2_or_port2 = wmem_map_new_autoreset(wmem_epan_scope(), wmem_file_scope(), | |||
| 643 | conversation_hash_element_list, | |||
| 644 | conversation_match_element_list); | |||
| 645 | wmem_map_insert(conversation_hashtable_element_list, wmem_strdup(wmem_epan_scope(), no_addr2_or_port2_map_key), | |||
| 646 | conversation_hashtable_no_addr2_or_port2); | |||
| 647 | ||||
| 648 | conversation_element_t id_elements[2] = { | |||
| 649 | { CE_UINT, .uint_val = 0 }, | |||
| 650 | { CE_CONVERSATION_TYPE, .conversation_type_val = CONVERSATION_NONE } | |||
| 651 | }; | |||
| 652 | char *id_map_key = conversation_element_list_name(wmem_epan_scope(), id_elements); | |||
| 653 | conversation_hashtable_id = wmem_map_new_autoreset(wmem_epan_scope(), wmem_file_scope(), | |||
| 654 | conversation_hash_element_list, | |||
| 655 | conversation_match_element_list); | |||
| 656 | wmem_map_insert(conversation_hashtable_element_list, wmem_strdup(wmem_epan_scope(), id_map_key), | |||
| 657 | conversation_hashtable_id); | |||
| 658 | ||||
| 659 | /* | |||
| 660 | * Initialize the "deinterlacer" table, which is used as the basis for the | |||
| 661 | * deinterlacing process, and in conjunction with the "anchor" tables | |||
| 662 | * | |||
| 663 | * Typically the elements are: | |||
| 664 | * ETH address 1 | |||
| 665 | * ETH address 2 | |||
| 666 | * Interface id | |||
| 667 | * VLAN id | |||
| 668 | * not used yet | |||
| 669 | * | |||
| 670 | * By the time of implementation, these table is invoked through the | |||
| 671 | * conversation_deinterlacing_key user preference. | |||
| 672 | */ | |||
| 673 | conversation_element_t deinterlacer_elements[EXACT_IDX_COUNT+1] = { | |||
| 674 | { CE_ADDRESS, .addr_val = ADDRESS_INIT_NONE{AT_NONE, 0, ((void*)0), ((void*)0)} }, | |||
| 675 | { CE_ADDRESS, .addr_val = ADDRESS_INIT_NONE{AT_NONE, 0, ((void*)0), ((void*)0)} }, | |||
| 676 | { CE_UINT, .port_val = 0 }, | |||
| 677 | { CE_UINT, .port_val = 0 }, | |||
| 678 | { CE_UINT, .uint_val = 0 }, | |||
| 679 | { CE_CONVERSATION_TYPE, .conversation_type_val = CONVERSATION_NONE } | |||
| 680 | }; | |||
| 681 | char *deinterlacer_map_key = conversation_element_list_name(wmem_epan_scope(), deinterlacer_elements); | |||
| 682 | conversation_hashtable_deinterlacer = wmem_map_new_autoreset(wmem_epan_scope(), wmem_file_scope(), | |||
| 683 | conversation_hash_element_list, | |||
| 684 | conversation_match_element_list); | |||
| 685 | wmem_map_insert(conversation_hashtable_element_list, wmem_strdup(wmem_epan_scope(), deinterlacer_map_key), | |||
| 686 | conversation_hashtable_deinterlacer); | |||
| 687 | ||||
| 688 | /* | |||
| 689 | * Initialize the "_anc" tables, which are very similar to their standard counterparts | |||
| 690 | * but contain an additional "anchor" materialized as an integer. This value is supposed | |||
| 691 | * to indicate a stream ID of the underlying protocol, thus attaching two conversations | |||
| 692 | * of two protocols together. | |||
| 693 | * | |||
| 694 | * By the time of implementation, these table is invoked through the | |||
| 695 | * conversation_deinterlacing_key user preference. | |||
| 696 | */ | |||
| 697 | conversation_element_t exact_elements_anc[EXACT_IDX_COUNT+1] = { | |||
| 698 | { CE_ADDRESS, .addr_val = ADDRESS_INIT_NONE{AT_NONE, 0, ((void*)0), ((void*)0)} }, | |||
| 699 | { CE_ADDRESS, .addr_val = ADDRESS_INIT_NONE{AT_NONE, 0, ((void*)0), ((void*)0)} }, | |||
| 700 | { CE_PORT, .port_val = 0 }, | |||
| 701 | { CE_PORT, .port_val = 0 }, | |||
| 702 | { CE_UINT, .uint_val = 0 }, | |||
| 703 | { CE_CONVERSATION_TYPE, .conversation_type_val = CONVERSATION_NONE } | |||
| 704 | }; | |||
| 705 | char *exact_anc_map_key = conversation_element_list_name(wmem_epan_scope(), exact_elements_anc); | |||
| 706 | conversation_hashtable_exact_addr_port_anc = wmem_map_new_autoreset(wmem_epan_scope(), wmem_file_scope(), | |||
| 707 | conversation_hash_element_list, | |||
| 708 | conversation_match_element_list); | |||
| 709 | wmem_map_insert(conversation_hashtable_element_list, wmem_strdup(wmem_epan_scope(), exact_anc_map_key), | |||
| 710 | conversation_hashtable_exact_addr_port_anc); | |||
| 711 | ||||
| 712 | conversation_element_t addrs_elements_anc[ADDRS_IDX_COUNT+1] = { | |||
| 713 | { CE_ADDRESS, .addr_val = ADDRESS_INIT_NONE{AT_NONE, 0, ((void*)0), ((void*)0)} }, | |||
| 714 | { CE_ADDRESS, .addr_val = ADDRESS_INIT_NONE{AT_NONE, 0, ((void*)0), ((void*)0)} }, | |||
| 715 | { CE_UINT, .uint_val = 0 }, | |||
| 716 | { CE_CONVERSATION_TYPE, .conversation_type_val = CONVERSATION_NONE } | |||
| 717 | }; | |||
| 718 | char *addrs_anc_map_key = conversation_element_list_name(wmem_epan_scope(), addrs_elements_anc); | |||
| 719 | conversation_hashtable_exact_addr_anc = wmem_map_new_autoreset(wmem_epan_scope(), wmem_file_scope(), | |||
| 720 | conversation_hash_element_list, | |||
| 721 | conversation_match_element_list); | |||
| 722 | wmem_map_insert(conversation_hashtable_element_list, wmem_strdup(wmem_epan_scope(), addrs_anc_map_key), | |||
| 723 | conversation_hashtable_exact_addr_anc); | |||
| 724 | ||||
| 725 | conversation_element_t no_addr2_elements_anc[DEINTD_NO_PORT2_IDX_COUNT] = { | |||
| 726 | { CE_ADDRESS, .addr_val = ADDRESS_INIT_NONE{AT_NONE, 0, ((void*)0), ((void*)0)} }, | |||
| 727 | { CE_PORT, .port_val = 0 }, | |||
| 728 | { CE_PORT, .port_val = 0 }, | |||
| 729 | { CE_UINT, .uint_val = 0 }, | |||
| 730 | { CE_CONVERSATION_TYPE, .conversation_type_val = CONVERSATION_NONE } | |||
| 731 | }; | |||
| 732 | char *no_addr2_anc_map_key = conversation_element_list_name(wmem_epan_scope(), no_addr2_elements_anc); | |||
| 733 | conversation_hashtable_no_addr2_anc = wmem_map_new_autoreset(wmem_epan_scope(), wmem_file_scope(), | |||
| 734 | conversation_hash_element_list, | |||
| 735 | conversation_match_element_list); | |||
| 736 | wmem_map_insert(conversation_hashtable_element_list, wmem_strdup(wmem_epan_scope(), no_addr2_anc_map_key), | |||
| 737 | conversation_hashtable_no_addr2_anc); | |||
| 738 | ||||
| 739 | conversation_element_t no_port2_elements_anc[DEINTD_NO_PORT2_IDX_COUNT] = { | |||
| 740 | { CE_ADDRESS, .addr_val = ADDRESS_INIT_NONE{AT_NONE, 0, ((void*)0), ((void*)0)} }, | |||
| 741 | { CE_ADDRESS, .addr_val = ADDRESS_INIT_NONE{AT_NONE, 0, ((void*)0), ((void*)0)} }, | |||
| 742 | { CE_PORT, .port_val = 0 }, | |||
| 743 | { CE_UINT, .uint_val = 0 }, | |||
| 744 | { CE_CONVERSATION_TYPE, .conversation_type_val = CONVERSATION_NONE } | |||
| 745 | }; | |||
| 746 | char *no_port2_anc_map_key = conversation_element_list_name(wmem_epan_scope(), no_port2_elements_anc); | |||
| 747 | conversation_hashtable_no_port2_anc = wmem_map_new_autoreset(wmem_epan_scope(), wmem_file_scope(), | |||
| 748 | conversation_hash_element_list, | |||
| 749 | conversation_match_element_list); | |||
| 750 | wmem_map_insert(conversation_hashtable_element_list, wmem_strdup(wmem_epan_scope(), no_port2_anc_map_key), | |||
| 751 | conversation_hashtable_no_port2_anc); | |||
| 752 | ||||
| 753 | conversation_element_t no_addr2_or_port2_elements_anc[DEINTD_NO_ADDR2_PORT2_IDX_COUNT] = { | |||
| 754 | { CE_ADDRESS, .addr_val = ADDRESS_INIT_NONE{AT_NONE, 0, ((void*)0), ((void*)0)} }, | |||
| 755 | { CE_PORT, .port_val = 0 }, | |||
| 756 | { CE_UINT, .uint_val = 0 }, | |||
| 757 | { CE_CONVERSATION_TYPE, .conversation_type_val = CONVERSATION_NONE } | |||
| 758 | }; | |||
| 759 | char *no_addr2_or_port2_anc_map_key = conversation_element_list_name(wmem_epan_scope(), no_addr2_or_port2_elements_anc); | |||
| 760 | conversation_hashtable_no_addr2_or_port2_anc = wmem_map_new_autoreset(wmem_epan_scope(), wmem_file_scope(), | |||
| 761 | conversation_hash_element_list, | |||
| 762 | conversation_match_element_list); | |||
| 763 | wmem_map_insert(conversation_hashtable_element_list, wmem_strdup(wmem_epan_scope(), no_addr2_or_port2_anc_map_key), | |||
| 764 | conversation_hashtable_no_addr2_or_port2_anc); | |||
| 765 | ||||
| 766 | conversation_element_t err_pkts_elements[ERR_PKTS_COUNT] = { | |||
| 767 | { CE_UINT, .uint_val = 0 }, | |||
| 768 | { CE_UINT, .uint_val = 0 }, | |||
| 769 | { CE_CONVERSATION_TYPE, .conversation_type_val = CONVERSATION_NONE } | |||
| 770 | }; | |||
| 771 | char *err_pkts_map_key = conversation_element_list_name(wmem_epan_scope(), err_pkts_elements); | |||
| 772 | conversation_hashtable_err_pkts = wmem_map_new_autoreset(wmem_epan_scope(), wmem_file_scope(), | |||
| 773 | conversation_hash_element_list, | |||
| 774 | conversation_match_element_list); | |||
| 775 | wmem_map_insert(conversation_hashtable_element_list, wmem_strdup(wmem_epan_scope(), err_pkts_map_key), | |||
| 776 | conversation_hashtable_err_pkts); | |||
| 777 | ||||
| 778 | } | |||
| 779 | ||||
| 780 | /** | |||
| 781 | * Initialize some variables every time a file is loaded or re-loaded. | |||
| 782 | */ | |||
| 783 | void | |||
| 784 | conversation_epan_reset(void) | |||
| 785 | { | |||
| 786 | /* | |||
| 787 | * Start the conversation indices over at 0. | |||
| 788 | */ | |||
| 789 | new_index = 0; | |||
| 790 | } | |||
| 791 | ||||
| 792 | /* | |||
| 793 | * Does the right thing when inserting into one of the conversation hash tables, | |||
| 794 | * taking into account ordering and hash chains and all that good stuff. | |||
| 795 | * | |||
| 796 | * Mostly adapted from the old conversation_new(). | |||
| 797 | */ | |||
| 798 | static void | |||
| 799 | conversation_insert_into_hashtable(wmem_map_t *hashtable, conversation_t *conv) | |||
| 800 | { | |||
| 801 | conversation_t *chain_head, *chain_tail, *cur, *prev; | |||
| 802 | ||||
| 803 | chain_head = (conversation_t *)wmem_map_lookup(hashtable, conv->key_ptr); | |||
| 804 | ||||
| 805 | if (NULL((void*)0)==chain_head) { | |||
| 806 | /* New entry */ | |||
| 807 | conv->next = NULL((void*)0); | |||
| 808 | conv->last = conv; | |||
| 809 | ||||
| 810 | wmem_map_insert(hashtable, conv->key_ptr, conv); | |||
| 811 | DPRINT(("created a new conversation chain"))(void)0; | |||
| 812 | } | |||
| 813 | else { | |||
| 814 | /* There's an existing chain for this key */ | |||
| 815 | DPRINT(("there's an existing conversation chain"))(void)0; | |||
| 816 | ||||
| 817 | chain_tail = chain_head->last; | |||
| 818 | ||||
| 819 | if (conv->setup_frame >= chain_tail->setup_frame) { | |||
| 820 | /* This convo belongs at the end of the chain */ | |||
| 821 | conv->next = NULL((void*)0); | |||
| 822 | conv->last = NULL((void*)0); | |||
| 823 | chain_tail->next = conv; | |||
| 824 | chain_head->last = conv; | |||
| 825 | } | |||
| 826 | else { | |||
| 827 | /* Loop through the chain to find the right spot */ | |||
| 828 | cur = chain_head; | |||
| 829 | prev = NULL((void*)0); | |||
| 830 | ||||
| 831 | for (; (conv->setup_frame > cur->setup_frame) && cur->next; prev=cur, cur=cur->next) | |||
| 832 | ; | |||
| 833 | ||||
| 834 | if (NULL((void*)0)==prev) { | |||
| 835 | /* Changing the head of the chain */ | |||
| 836 | conv->next = chain_head; | |||
| 837 | conv->last = chain_tail; | |||
| 838 | chain_head->last = NULL((void*)0); | |||
| 839 | wmem_map_insert(hashtable, conv->key_ptr, conv); | |||
| 840 | } | |||
| 841 | else { | |||
| 842 | /* Inserting into the middle of the chain */ | |||
| 843 | conv->next = cur; | |||
| 844 | conv->last = NULL((void*)0); | |||
| 845 | prev->next = conv; | |||
| 846 | } | |||
| 847 | } | |||
| 848 | } | |||
| 849 | } | |||
| 850 | ||||
| 851 | /* | |||
| 852 | * Does the right thing when removing from one of the conversation hash tables, | |||
| 853 | * taking into account ordering and hash chains and all that good stuff. | |||
| 854 | */ | |||
| 855 | static void | |||
| 856 | conversation_remove_from_hashtable(wmem_map_t *hashtable, conversation_t *conv) | |||
| 857 | { | |||
| 858 | conversation_t *chain_head, *cur, *prev; | |||
| 859 | ||||
| 860 | chain_head = (conversation_t *)wmem_map_lookup(hashtable, conv->key_ptr); | |||
| 861 | ||||
| 862 | if (conv == chain_head) { | |||
| 863 | /* We are currently the front of the chain */ | |||
| 864 | if (NULL((void*)0) == conv->next) { | |||
| 865 | /* We are the only conversation in the chain, no need to | |||
| 866 | * update next pointer, but do not call | |||
| 867 | * wmem_map_remove() either because the conv data | |||
| 868 | * will be re-inserted. */ | |||
| 869 | wmem_map_steal(hashtable, conv->key_ptr); | |||
| 870 | } | |||
| 871 | else { | |||
| 872 | /* Update the head of the chain */ | |||
| 873 | chain_head = conv->next; | |||
| 874 | chain_head->last = conv->last; | |||
| 875 | ||||
| 876 | if (conv->latest_found == conv) | |||
| 877 | chain_head->latest_found = NULL((void*)0); | |||
| 878 | else | |||
| 879 | chain_head->latest_found = conv->latest_found; | |||
| 880 | ||||
| 881 | wmem_map_insert(hashtable, chain_head->key_ptr, chain_head); | |||
| 882 | } | |||
| 883 | } | |||
| 884 | else { | |||
| 885 | /* We are not the front of the chain. Loop through to find us. | |||
| 886 | * Start loop at chain_head->next rather than chain_head because | |||
| 887 | * we already know we're not at the head. */ | |||
| 888 | cur = chain_head->next; | |||
| 889 | prev = chain_head; | |||
| 890 | ||||
| 891 | for (; (cur != conv) && cur->next; prev=cur, cur=cur->next) | |||
| 892 | ; | |||
| 893 | ||||
| 894 | if (cur != conv) { | |||
| 895 | /* XXX: Conversation not found. Wrong hashtable? */ | |||
| 896 | return; | |||
| 897 | } | |||
| 898 | ||||
| 899 | prev->next = conv->next; | |||
| 900 | ||||
| 901 | if (NULL((void*)0) == conv->next) { | |||
| 902 | /* We're at the very end of the list. */ | |||
| 903 | chain_head->last = prev; | |||
| 904 | } | |||
| 905 | ||||
| 906 | if (chain_head->latest_found == conv) | |||
| 907 | chain_head->latest_found = prev; | |||
| 908 | } | |||
| 909 | } | |||
| 910 | ||||
| 911 | conversation_t *conversation_new_full(const uint32_t setup_frame, conversation_element_t *elements) | |||
| 912 | { | |||
| 913 | DISSECTOR_ASSERT(elements)((void) ((elements) ? (void)0 : (proto_report_dissector_bug("%s:%u: failed assertion \"%s\"" , "epan/conversation.c", 913, "elements")))); | |||
| 914 | ||||
| 915 | char *el_list_map_key = conversation_element_list_name(wmem_epan_scope(), elements); | |||
| 916 | wmem_map_t *el_list_map = (wmem_map_t *) wmem_map_lookup(conversation_hashtable_element_list, el_list_map_key); | |||
| 917 | if (!el_list_map) { | |||
| 918 | el_list_map = wmem_map_new_autoreset(wmem_epan_scope(), wmem_file_scope(), conversation_hash_element_list, | |||
| 919 | conversation_match_element_list); | |||
| 920 | wmem_map_insert(conversation_hashtable_element_list, wmem_strdup(wmem_epan_scope(), el_list_map_key), el_list_map); | |||
| 921 | } | |||
| 922 | ||||
| 923 | size_t element_count = conversation_element_count(elements); | |||
| 924 | conversation_element_t *conv_key = wmem_memdup(wmem_file_scope(), elements, sizeof(conversation_element_t) * element_count); | |||
| 925 | for (size_t i = 0; i < element_count; i++) { | |||
| 926 | if (conv_key[i].type == CE_ADDRESS) { | |||
| 927 | copy_address_wmem(wmem_file_scope(), &conv_key[i].addr_val, &elements[i].addr_val); | |||
| 928 | } else if (conv_key[i].type == CE_STRING) { | |||
| 929 | conv_key[i].str_val = wmem_strdup(wmem_file_scope(), elements[i].str_val); | |||
| 930 | } else if (conv_key[i].type == CE_BLOB) { | |||
| 931 | conv_key[i].blob.val = wmem_memdup(wmem_file_scope(), elements[i].blob.val, elements[i].blob.len); | |||
| 932 | } | |||
| 933 | } | |||
| 934 | ||||
| 935 | conversation_t *conversation = wmem_new0(wmem_file_scope(), conversation_t)((conversation_t*)wmem_alloc0((wmem_file_scope()), sizeof(conversation_t ))); | |||
| 936 | conversation->conv_index = new_index; | |||
| 937 | conversation->setup_frame = conversation->last_frame = setup_frame; | |||
| 938 | ||||
| 939 | new_index++; | |||
| 940 | ||||
| 941 | conversation->key_ptr = conv_key; | |||
| 942 | conversation_insert_into_hashtable(el_list_map, conversation); | |||
| 943 | return conversation; | |||
| 944 | } | |||
| 945 | ||||
| 946 | /* | |||
| 947 | * Given two address/port pairs for a packet, create a new conversation | |||
| 948 | * to contain packets between those address/port pairs. | |||
| 949 | * | |||
| 950 | * The options field is used to specify whether the address 2 value | |||
| 951 | * and/or port 2 value are not given and any value is acceptable | |||
| 952 | * when searching for this conversation. | |||
| 953 | */ | |||
| 954 | conversation_t * | |||
| 955 | conversation_new(const uint32_t setup_frame, const address *addr1, const address *addr2, | |||
| 956 | const conversation_type ctype, const uint32_t port1, const uint32_t port2, const unsigned options) | |||
| 957 | { | |||
| 958 | /* | |||
| 959 | DISSECTOR_ASSERT(!(options | CONVERSATION_TEMPLATE) || ((options | (NO_ADDR2 | NO_PORT2 | NO_PORT2_FORCE))) && | |||
| 960 | "A conversation template may not be constructed without wildcard options"); | |||
| 961 | */ | |||
| 962 | wmem_map_t* hashtable; | |||
| 963 | conversation_t *conversation = NULL((void*)0); | |||
| 964 | /* | |||
| 965 | * Verify that the correct options are used, if any. | |||
| 966 | */ | |||
| 967 | DISSECTOR_ASSERT_HINT(!(options & NO_MASK_B), "Use NO_ADDR2 and/or NO_PORT2 or NO_PORT2_FORCE as option")((void) ((!(options & 0xFFFF0000)) ? (void)0 : (proto_report_dissector_bug ("%s:%u: failed assertion \"%s\" (%s)", "epan/conversation.c" , 967, "!(options & 0xFFFF0000)", "Use NO_ADDR2 and/or NO_PORT2 or NO_PORT2_FORCE as option" )))); | |||
| 968 | ||||
| 969 | #ifdef DEBUG_CONVERSATION | |||
| 970 | char *addr1_str, *addr2_str; | |||
| 971 | if (addr1 == NULL((void*)0)) { | |||
| 972 | /* | |||
| 973 | * No address 1. | |||
| 974 | */ | |||
| 975 | if (options & NO_ADDR20x01) { | |||
| 976 | /* | |||
| 977 | * Neither address 1 nor address 2. | |||
| 978 | */ | |||
| 979 | if (options & NO_PORT20x02) { | |||
| 980 | /* | |||
| 981 | * Port 1 but not port 2. | |||
| 982 | */ | |||
| 983 | DPRINT(("creating conversation for frame #%u: ID %u (ctype=%d)",(void)0 | |||
| 984 | setup_frame, port1, ctype))(void)0; | |||
| 985 | } else { | |||
| 986 | /* | |||
| 987 | * Ports 1 and 2. | |||
| 988 | */ | |||
| 989 | DPRINT(("creating conversation for frame #%u: %u -> %u (ctype=%d)",(void)0 | |||
| 990 | setup_frame, port1, port2, ctype))(void)0; | |||
| 991 | } | |||
| 992 | } else { | |||
| 993 | /* | |||
| 994 | * Address 2 but not address 1. | |||
| 995 | */ | |||
| 996 | addr2_str = address_to_str(NULL((void*)0), addr2); | |||
| 997 | if (options & NO_PORT20x02) { | |||
| 998 | /* | |||
| 999 | * Port 1 but not port 2. | |||
| 1000 | */ | |||
| 1001 | DPRINT(("creating conversation for frame #%u: ID %u, address %s (ctype=%d)",(void)0 | |||
| 1002 | setup_frame, port1, addr2_str, ctype))(void)0; | |||
| 1003 | } else { | |||
| 1004 | /* | |||
| 1005 | * Ports 1 and 2. | |||
| 1006 | */ | |||
| 1007 | DPRINT(("creating conversation for frame #%u: %u -> %s:%u (ctype=%d)",(void)0 | |||
| 1008 | setup_frame, port1, addr2_str, port2, ctype))(void)0; | |||
| 1009 | } | |||
| 1010 | wmem_free(NULL((void*)0), addr2_str); | |||
| 1011 | } | |||
| 1012 | } else { | |||
| 1013 | /* | |||
| 1014 | * Address 1. | |||
| 1015 | */ | |||
| 1016 | addr1_str = address_to_str(NULL((void*)0), addr1); | |||
| 1017 | if (options & NO_ADDR20x01) { | |||
| 1018 | /* | |||
| 1019 | * Address 1 but no address 2. | |||
| 1020 | */ | |||
| 1021 | if (options & NO_PORT20x02) { | |||
| 1022 | /* | |||
| 1023 | * Port 1 but not port 2. | |||
| 1024 | */ | |||
| 1025 | DPRINT(("creating conversation for frame #%u: %s:%u (ctype=%d)",(void)0 | |||
| 1026 | setup_frame, addr1_str, port1, ctype))(void)0; | |||
| 1027 | } else { | |||
| 1028 | /* | |||
| 1029 | * Ports 1 and 2. | |||
| 1030 | */ | |||
| 1031 | DPRINT(("creating conversation for frame #%u: %s:%u -> %u (ctype=%d)",(void)0 | |||
| 1032 | setup_frame, addr1_str, port1, port2, ctype))(void)0; | |||
| 1033 | } | |||
| 1034 | } else { | |||
| 1035 | /* | |||
| 1036 | * Addresses 1 and 2. | |||
| 1037 | */ | |||
| 1038 | addr2_str = address_to_str(NULL((void*)0), addr2); | |||
| 1039 | if (options & NO_PORT20x02) { | |||
| 1040 | /* | |||
| 1041 | * Port 1 but not port 2. | |||
| 1042 | */ | |||
| 1043 | DPRINT(("creating conversation for frame #%u: %s:%u -> %s (ctype=%d)",(void)0 | |||
| 1044 | setup_frame, addr1_str, port1, addr2_str, ctype))(void)0; | |||
| 1045 | } else if (options & NO_PORTS0x010) { | |||
| 1046 | /* | |||
| 1047 | * No Ports. | |||
| 1048 | */ | |||
| 1049 | DPRINT(("creating conversation for frame #%u: %s -> %s (ctype=%d)",(void)0 | |||
| 1050 | setup_frame, addr1_str, addr2_str, ctype))(void)0; | |||
| 1051 | } else { | |||
| 1052 | /* | |||
| 1053 | * Ports 1 and 2. | |||
| 1054 | */ | |||
| 1055 | DPRINT(("creating conversation for frame #%u: %s:%u -> %s:%u (ctype=%d)",(void)0 | |||
| 1056 | setup_frame, addr1_str, port1, addr2_str, port2, ctype))(void)0; | |||
| 1057 | } | |||
| 1058 | wmem_free(NULL((void*)0), addr2_str); | |||
| 1059 | } | |||
| 1060 | wmem_free(NULL((void*)0), addr1_str); | |||
| 1061 | } | |||
| 1062 | #endif | |||
| 1063 | ||||
| 1064 | // Always allocate an "exact"-sized key in case we call conversation_set_port2 | |||
| 1065 | // or conversation_set_addr2 later. | |||
| 1066 | conversation_element_t *new_key = wmem_alloc(wmem_file_scope(), sizeof(conversation_element_t) * EXACT_IDX_COUNT); | |||
| 1067 | size_t addr2_idx = 0; | |||
| 1068 | size_t port2_idx = 0; | |||
| 1069 | size_t endp_idx; | |||
| 1070 | ||||
| 1071 | new_key[ADDR1_IDX].type = CE_ADDRESS; | |||
| 1072 | if (addr1 != NULL((void*)0)) { | |||
| 1073 | copy_address_wmem(wmem_file_scope(), &new_key[ADDR1_IDX].addr_val, addr1); | |||
| 1074 | } else { | |||
| 1075 | clear_address(&new_key[ADDR1_IDX].addr_val); | |||
| 1076 | } | |||
| 1077 | ||||
| 1078 | if (!(options & NO_PORTS0x010)) { | |||
| 1079 | new_key[PORT1_IDX].type = CE_PORT; | |||
| 1080 | new_key[PORT1_IDX].port_val = port1; | |||
| 1081 | } | |||
| 1082 | ||||
| 1083 | if (options & NO_ADDR20x01) { | |||
| 1084 | if (options & (NO_PORT20x02|NO_PORT2_FORCE0x04)) { | |||
| 1085 | hashtable = conversation_hashtable_no_addr2_or_port2; | |||
| 1086 | endp_idx = ENDP_NO_ADDR2_PORT2_IDX; | |||
| 1087 | } else { | |||
| 1088 | hashtable = conversation_hashtable_no_addr2; | |||
| 1089 | port2_idx = PORT2_NO_ADDR2_IDX; | |||
| 1090 | endp_idx = ENDP_NO_ADDR2_IDX; | |||
| 1091 | } | |||
| 1092 | } else { | |||
| 1093 | if (options & (NO_PORT20x02|NO_PORT2_FORCE0x04)) { | |||
| 1094 | hashtable = conversation_hashtable_no_port2; | |||
| 1095 | addr2_idx = ADDR2_IDX; | |||
| 1096 | endp_idx = ENDP_NO_PORT2_IDX; | |||
| 1097 | } else if (options & NO_PORTS0x010) { | |||
| 1098 | hashtable = conversation_hashtable_exact_addr; | |||
| 1099 | addr2_idx = PORT1_IDX; | |||
| 1100 | endp_idx = ENDP_NO_PORTS_IDX; | |||
| 1101 | } else { | |||
| 1102 | hashtable = conversation_hashtable_exact_addr_port; | |||
| 1103 | addr2_idx = ADDR2_IDX; | |||
| 1104 | port2_idx = PORT2_IDX; | |||
| 1105 | endp_idx = ENDP_EXACT_IDX; | |||
| 1106 | } | |||
| 1107 | } | |||
| 1108 | ||||
| 1109 | if (addr2_idx) { | |||
| 1110 | new_key[addr2_idx].type = CE_ADDRESS; | |||
| 1111 | if (addr2 != NULL((void*)0)) { | |||
| 1112 | copy_address_wmem(wmem_file_scope(), &new_key[addr2_idx].addr_val, addr2); | |||
| 1113 | } else { | |||
| 1114 | clear_address(&new_key[addr2_idx].addr_val); | |||
| 1115 | } | |||
| 1116 | } | |||
| 1117 | ||||
| 1118 | if (port2_idx) { | |||
| 1119 | new_key[port2_idx].type = CE_PORT; | |||
| 1120 | new_key[port2_idx].port_val = port2; | |||
| 1121 | } | |||
| 1122 | ||||
| 1123 | new_key[endp_idx].type = CE_CONVERSATION_TYPE; | |||
| 1124 | new_key[endp_idx].conversation_type_val = ctype; | |||
| 1125 | ||||
| 1126 | conversation = wmem_new0(wmem_file_scope(), conversation_t)((conversation_t*)wmem_alloc0((wmem_file_scope()), sizeof(conversation_t ))); | |||
| 1127 | ||||
| 1128 | conversation->conv_index = new_index; | |||
| 1129 | conversation->setup_frame = conversation->last_frame = setup_frame; | |||
| 1130 | ||||
| 1131 | /* set the options and key pointer */ | |||
| 1132 | conversation->options = options; | |||
| 1133 | conversation->key_ptr = new_key; | |||
| 1134 | ||||
| 1135 | new_index++; | |||
| 1136 | ||||
| 1137 | DINDENT()(void)0; | |||
| 1138 | conversation_insert_into_hashtable(hashtable, conversation); | |||
| 1139 | DENDENT()(void)0; | |||
| 1140 | ||||
| 1141 | return conversation; | |||
| 1142 | } | |||
| 1143 | ||||
| 1144 | conversation_t * | |||
| 1145 | conversation_new_strat(const packet_info *pinfo, const conversation_type ctype, const unsigned options) | |||
| 1146 | { | |||
| 1147 | conversation_t *conversation = NULL((void*)0); | |||
| 1148 | bool_Bool is_ordinary_conv = true1; | |||
| 1149 | ||||
| 1150 | /* deinterlacing is only supported for the Ethernet wtap for now */ | |||
| 1151 | if( (pinfo->pseudo_header != NULL((void*)0)) | |||
| 1152 | && (pinfo->rec->rec_header.packet_header.pkt_encap == WTAP_ENCAP_ETHERNET1) | |||
| 1153 | && (prefs.conversation_deinterlacing_key>0)) { | |||
| 1154 | conversation_t *underlying_conv = find_conversation_deinterlacer_pinfo(pinfo); | |||
| 1155 | if(underlying_conv) { | |||
| 1156 | is_ordinary_conv = false0; | |||
| 1157 | conversation = conversation_new_deinterlaced(pinfo->num, &pinfo->src, &pinfo->dst, ctype, | |||
| 1158 | pinfo->srcport, pinfo->destport, underlying_conv->conv_index, options); | |||
| 1159 | } | |||
| 1160 | } | |||
| 1161 | ||||
| 1162 | if(is_ordinary_conv) { | |||
| 1163 | conversation = conversation_new(pinfo->num, &pinfo->src, &pinfo->dst, ctype, pinfo->srcport, pinfo->destport, options); | |||
| 1164 | } | |||
| 1165 | ||||
| 1166 | return conversation; | |||
| 1167 | } | |||
| 1168 | ||||
| 1169 | conversation_t * | |||
| 1170 | conversation_new_strat_xtd(const packet_info *pinfo, const uint32_t setup_frame, const address *addr1, const address *addr2, | |||
| 1171 | const conversation_type ctype, const uint32_t port1, const uint32_t port2, const unsigned options) | |||
| 1172 | { | |||
| 1173 | conversation_t *conversation = NULL((void*)0); | |||
| 1174 | bool_Bool is_ordinary_conv = true1; | |||
| 1175 | ||||
| 1176 | /* deinterlacing is only supported for the Ethernet wtap for now */ | |||
| 1177 | if( (pinfo->pseudo_header != NULL((void*)0)) | |||
| 1178 | && (pinfo->rec->rec_header.packet_header.pkt_encap == WTAP_ENCAP_ETHERNET1) | |||
| 1179 | && (prefs.conversation_deinterlacing_key>0)) { | |||
| 1180 | conversation_t *underlying_conv = find_conversation_deinterlacer_pinfo(pinfo); | |||
| 1181 | if(underlying_conv) { | |||
| 1182 | is_ordinary_conv = false0; | |||
| 1183 | conversation = conversation_new_deinterlaced(setup_frame, addr1, addr2, ctype, | |||
| 1184 | port1, port2, underlying_conv->conv_index, options); | |||
| 1185 | } | |||
| 1186 | } | |||
| 1187 | ||||
| 1188 | if(is_ordinary_conv) { | |||
| 1189 | conversation = conversation_new(setup_frame, addr1, addr2, ctype, port1, port2, options); | |||
| 1190 | } | |||
| 1191 | ||||
| 1192 | return conversation; | |||
| 1193 | } | |||
| 1194 | ||||
| 1195 | conversation_t * | |||
| 1196 | conversation_new_by_id(const uint32_t setup_frame, const conversation_type ctype, const uint32_t id) | |||
| 1197 | { | |||
| 1198 | conversation_t *conversation = wmem_new0(wmem_file_scope(), conversation_t)((conversation_t*)wmem_alloc0((wmem_file_scope()), sizeof(conversation_t ))); | |||
| 1199 | conversation->conv_index = new_index; | |||
| 1200 | conversation->setup_frame = conversation->last_frame = setup_frame; | |||
| 1201 | ||||
| 1202 | new_index++; | |||
| 1203 | ||||
| 1204 | conversation_element_t *elements = wmem_alloc(wmem_file_scope(), sizeof(conversation_element_t) * 2); | |||
| 1205 | elements[0].type = CE_UINT; | |||
| 1206 | elements[0].uint_val = id; | |||
| 1207 | elements[1].type = CE_CONVERSATION_TYPE; | |||
| 1208 | elements[1].conversation_type_val = ctype; | |||
| 1209 | conversation->key_ptr = elements; | |||
| 1210 | conversation_insert_into_hashtable(conversation_hashtable_id, conversation); | |||
| 1211 | ||||
| 1212 | return conversation; | |||
| 1213 | } | |||
| 1214 | ||||
| 1215 | conversation_t * | |||
| 1216 | conversation_new_err_pkts(const uint32_t setup_frame, const conversation_type ctype, const uint32_t id, const uint32_t rid) | |||
| 1217 | { | |||
| 1218 | conversation_t *conversation = wmem_new0(wmem_file_scope(), conversation_t)((conversation_t*)wmem_alloc0((wmem_file_scope()), sizeof(conversation_t ))); | |||
| 1219 | conversation->conv_index = new_index; | |||
| 1220 | conversation->setup_frame = conversation->last_frame = setup_frame; | |||
| 1221 | ||||
| 1222 | new_index++; | |||
| 1223 | ||||
| 1224 | conversation_element_t *elements = wmem_alloc(wmem_file_scope(), sizeof(conversation_element_t) * 3); | |||
| 1225 | elements[0].type = CE_UINT; | |||
| 1226 | elements[0].uint_val = id; | |||
| 1227 | elements[1].type = CE_UINT; | |||
| 1228 | elements[1].uint_val = rid; | |||
| 1229 | elements[2].type = CE_CONVERSATION_TYPE; | |||
| 1230 | elements[2].conversation_type_val = ctype; | |||
| 1231 | conversation->key_ptr = elements; | |||
| 1232 | conversation_insert_into_hashtable(conversation_hashtable_err_pkts, conversation); | |||
| 1233 | ||||
| 1234 | return conversation; | |||
| 1235 | } | |||
| 1236 | ||||
| 1237 | conversation_t * | |||
| 1238 | conversation_new_deinterlacer(const uint32_t setup_frame, const address *addr1, const address *addr2, | |||
| 1239 | const conversation_type ctype, const uint32_t key1, const uint32_t key2, const uint32_t key3) | |||
| 1240 | { | |||
| 1241 | ||||
| 1242 | conversation_t *conversation = wmem_new0(wmem_file_scope(), conversation_t)((conversation_t*)wmem_alloc0((wmem_file_scope()), sizeof(conversation_t ))); | |||
| 1243 | conversation->conv_index = new_index; | |||
| 1244 | conversation->setup_frame = conversation->last_frame = setup_frame; | |||
| 1245 | ||||
| 1246 | conversation_element_t *new_key = wmem_alloc(wmem_file_scope(), sizeof(conversation_element_t) * (DEINTR_ENDP_IDX+1)); | |||
| 1247 | ||||
| 1248 | new_key[DEINTR_ADDR1_IDX].type = CE_ADDRESS; | |||
| 1249 | if (addr1 != NULL((void*)0)) { | |||
| 1250 | copy_address_wmem(wmem_file_scope(), &new_key[DEINTR_ADDR1_IDX].addr_val, addr1); | |||
| 1251 | } | |||
| 1252 | else { | |||
| 1253 | clear_address(&new_key[DEINTR_ADDR1_IDX].addr_val); | |||
| 1254 | } | |||
| 1255 | ||||
| 1256 | new_key[DEINTR_ADDR2_IDX].type = CE_ADDRESS; | |||
| 1257 | if (addr2 != NULL((void*)0)) { | |||
| 1258 | copy_address_wmem(wmem_file_scope(), &new_key[DEINTR_ADDR2_IDX].addr_val, addr2); | |||
| 1259 | } | |||
| 1260 | else { | |||
| 1261 | clear_address(&new_key[DEINTR_ADDR2_IDX].addr_val); | |||
| 1262 | } | |||
| 1263 | ||||
| 1264 | new_key[DEINTR_KEY1_IDX].type = CE_UINT; | |||
| 1265 | new_key[DEINTR_KEY1_IDX].uint_val = key1; | |||
| 1266 | ||||
| 1267 | new_key[DEINTR_KEY2_IDX].type = CE_UINT; | |||
| 1268 | new_key[DEINTR_KEY2_IDX].uint_val = key2; | |||
| 1269 | ||||
| 1270 | new_key[DEINTR_KEY3_IDX].type = CE_UINT; | |||
| 1271 | new_key[DEINTR_KEY3_IDX].uint_val = key3; | |||
| 1272 | ||||
| 1273 | new_key[DEINTR_ENDP_IDX].type = CE_CONVERSATION_TYPE; | |||
| 1274 | new_key[DEINTR_ENDP_IDX].conversation_type_val = ctype; | |||
| 1275 | ||||
| 1276 | conversation->key_ptr = new_key; | |||
| 1277 | ||||
| 1278 | new_index++; | |||
| 1279 | ||||
| 1280 | conversation_insert_into_hashtable(conversation_hashtable_deinterlacer, conversation); | |||
| 1281 | ||||
| 1282 | return conversation; | |||
| 1283 | } | |||
| 1284 | ||||
| 1285 | conversation_t * | |||
| 1286 | conversation_new_deinterlaced(const uint32_t setup_frame, const address *addr1, const address *addr2, | |||
| 1287 | const conversation_type ctype, const uint32_t port1, const uint32_t port2, const uint32_t anchor, const unsigned options) | |||
| 1288 | { | |||
| 1289 | ||||
| 1290 | conversation_t *conversation = wmem_new0(wmem_file_scope(), conversation_t)((conversation_t*)wmem_alloc0((wmem_file_scope()), sizeof(conversation_t ))); | |||
| 1291 | conversation->conv_index = new_index; | |||
| 1292 | conversation->setup_frame = conversation->last_frame = setup_frame; | |||
| 1293 | ||||
| 1294 | if (options & NO_PORTS0x010) { | |||
| 1295 | conversation_element_t *new_key = wmem_alloc(wmem_file_scope(), sizeof(conversation_element_t) * (DEINTD_ENDP_NO_PORTS_IDX+2)); | |||
| 1296 | ||||
| 1297 | new_key[DEINTD_ADDR1_IDX].type = CE_ADDRESS; | |||
| 1298 | if (addr1 != NULL((void*)0)) { | |||
| 1299 | copy_address_wmem(wmem_file_scope(), &new_key[DEINTD_ADDR1_IDX].addr_val, addr1); | |||
| 1300 | } | |||
| 1301 | else { | |||
| 1302 | clear_address(&new_key[DEINTD_ADDR1_IDX].addr_val); | |||
| 1303 | } | |||
| 1304 | ||||
| 1305 | new_key[DEINTD_ADDR2_IDX].type = CE_ADDRESS; | |||
| 1306 | if (addr2 != NULL((void*)0)) { | |||
| 1307 | copy_address_wmem(wmem_file_scope(), &new_key[DEINTD_ADDR2_IDX].addr_val, addr2); | |||
| 1308 | } | |||
| 1309 | else { | |||
| 1310 | clear_address(&new_key[DEINTD_ADDR2_IDX].addr_val); | |||
| 1311 | } | |||
| 1312 | ||||
| 1313 | new_key[DEINTD_ENDP_NO_PORTS_IDX].type = CE_UINT; | |||
| 1314 | new_key[DEINTD_ENDP_NO_PORTS_IDX].uint_val = anchor; | |||
| 1315 | ||||
| 1316 | new_key[DEINTD_ENDP_NO_PORTS_IDX+ 1].type = CE_CONVERSATION_TYPE; | |||
| 1317 | new_key[DEINTD_ENDP_NO_PORTS_IDX+ 1].conversation_type_val = ctype; | |||
| 1318 | ||||
| 1319 | // set the options and key pointer | |||
| 1320 | conversation->options = options; | |||
| 1321 | conversation->key_ptr = new_key; | |||
| 1322 | ||||
| 1323 | new_index++; | |||
| 1324 | ||||
| 1325 | conversation_insert_into_hashtable(conversation_hashtable_exact_addr_anc, conversation); | |||
| 1326 | ||||
| 1327 | return conversation; | |||
| 1328 | } | |||
| 1329 | else if (options & NO_ADDR20x01) { | |||
| 1330 | if (options & NO_PORT20x02) { | |||
| 1331 | ||||
| 1332 | conversation_element_t *new_key = wmem_alloc(wmem_file_scope(), sizeof(conversation_element_t) * (DEINTD_NO_ADDR2_PORT2_IDX_COUNT+1)); | |||
| 1333 | ||||
| 1334 | new_key[DEINTD_ADDR1_IDX].type = CE_ADDRESS; | |||
| 1335 | if (addr1 != NULL((void*)0)) { | |||
| 1336 | copy_address_wmem(wmem_file_scope(), &new_key[DEINTD_ADDR1_IDX].addr_val, addr1); | |||
| 1337 | } | |||
| 1338 | else { | |||
| 1339 | clear_address(&new_key[DEINTD_ADDR1_IDX].addr_val); | |||
| 1340 | } | |||
| 1341 | ||||
| 1342 | new_key[DEINTD_PORT1_IDX-1].type = CE_PORT; | |||
| 1343 | new_key[DEINTD_PORT1_IDX-1].port_val = port1; | |||
| 1344 | ||||
| 1345 | new_key[DEINTD_NO_ADDR2_PORT2_IDX_COUNT-2].type = CE_UINT; | |||
| 1346 | new_key[DEINTD_NO_ADDR2_PORT2_IDX_COUNT-2].uint_val = anchor; | |||
| 1347 | ||||
| 1348 | new_key[DEINTD_NO_ADDR2_PORT2_IDX_COUNT-1].type = CE_CONVERSATION_TYPE; | |||
| 1349 | new_key[DEINTD_NO_ADDR2_PORT2_IDX_COUNT-1].conversation_type_val = ctype; | |||
| 1350 | ||||
| 1351 | // set the options and key pointer | |||
| 1352 | conversation->options = options; | |||
| 1353 | conversation->key_ptr = new_key; | |||
| 1354 | ||||
| 1355 | new_index++; | |||
| 1356 | ||||
| 1357 | conversation_insert_into_hashtable(conversation_hashtable_no_addr2_or_port2_anc, conversation); | |||
| 1358 | ||||
| 1359 | return conversation; | |||
| 1360 | } | |||
| 1361 | ||||
| 1362 | else { | |||
| 1363 | conversation_element_t *new_key = wmem_alloc(wmem_file_scope(), sizeof(conversation_element_t) * (DEINTD_NO_ADDR2_IDX_COUNT+1)); | |||
| 1364 | ||||
| 1365 | new_key[DEINTD_ADDR1_IDX].type = CE_ADDRESS; | |||
| 1366 | if (addr1 != NULL((void*)0)) { | |||
| 1367 | copy_address_wmem(wmem_file_scope(), &new_key[DEINTD_ADDR1_IDX].addr_val, addr1); | |||
| 1368 | } | |||
| 1369 | else { | |||
| 1370 | clear_address(&new_key[DEINTD_ADDR1_IDX].addr_val); | |||
| 1371 | } | |||
| 1372 | ||||
| 1373 | new_key[DEINTD_PORT1_IDX-1].type = CE_PORT; | |||
| 1374 | new_key[DEINTD_PORT1_IDX-1].port_val = port1; | |||
| 1375 | ||||
| 1376 | new_key[DEINTD_PORT2_IDX-1].type = CE_PORT; | |||
| 1377 | new_key[DEINTD_PORT2_IDX-1].port_val = port2; | |||
| 1378 | ||||
| 1379 | new_key[DEINTD_NO_ADDR2_IDX_COUNT-2].type = CE_UINT; | |||
| 1380 | new_key[DEINTD_NO_ADDR2_IDX_COUNT-2].uint_val = anchor; | |||
| 1381 | ||||
| 1382 | new_key[DEINTD_NO_ADDR2_IDX_COUNT-1].type = CE_CONVERSATION_TYPE; | |||
| 1383 | new_key[DEINTD_NO_ADDR2_IDX_COUNT-1].conversation_type_val = ctype; | |||
| 1384 | ||||
| 1385 | // set the options and key pointer | |||
| 1386 | conversation->options = options; | |||
| 1387 | conversation->key_ptr = new_key; | |||
| 1388 | ||||
| 1389 | new_index++; | |||
| 1390 | ||||
| 1391 | conversation_insert_into_hashtable(conversation_hashtable_no_addr2_anc, conversation); | |||
| 1392 | ||||
| 1393 | return conversation; | |||
| 1394 | } | |||
| 1395 | } | |||
| 1396 | else if (options & NO_PORT20x02) { | |||
| 1397 | conversation_element_t *new_key = wmem_alloc(wmem_file_scope(), sizeof(conversation_element_t) * (DEINTD_EXACT_IDX_COUNT+1)); | |||
| 1398 | ||||
| 1399 | new_key[DEINTD_ADDR1_IDX].type = CE_ADDRESS; | |||
| 1400 | if (addr1 != NULL((void*)0)) { | |||
| 1401 | copy_address_wmem(wmem_file_scope(), &new_key[DEINTD_ADDR1_IDX].addr_val, addr1); | |||
| 1402 | } | |||
| 1403 | else { | |||
| 1404 | clear_address(&new_key[DEINTD_ADDR1_IDX].addr_val); | |||
| 1405 | } | |||
| 1406 | ||||
| 1407 | new_key[DEINTD_ADDR2_IDX].type = CE_ADDRESS; | |||
| 1408 | if (addr2 != NULL((void*)0)) { | |||
| 1409 | copy_address_wmem(wmem_file_scope(), &new_key[DEINTD_ADDR2_IDX].addr_val, addr2); | |||
| 1410 | } | |||
| 1411 | else { | |||
| 1412 | clear_address(&new_key[DEINTD_ADDR2_IDX].addr_val); | |||
| 1413 | } | |||
| 1414 | ||||
| 1415 | new_key[DEINTD_PORT1_IDX].type = CE_PORT; | |||
| 1416 | new_key[DEINTD_PORT1_IDX].port_val = port1; | |||
| 1417 | ||||
| 1418 | new_key[DEINTD_PORT1_IDX + 1].type = CE_UINT; | |||
| 1419 | new_key[DEINTD_PORT1_IDX + 1].uint_val = anchor; | |||
| 1420 | ||||
| 1421 | new_key[DEINTD_PORT1_IDX + 2].type = CE_CONVERSATION_TYPE; | |||
| 1422 | new_key[DEINTD_PORT1_IDX + 2].conversation_type_val = ctype; | |||
| 1423 | ||||
| 1424 | // set the options and key pointer | |||
| 1425 | conversation->options = options; | |||
| 1426 | conversation->key_ptr = new_key; | |||
| 1427 | ||||
| 1428 | new_index++; | |||
| 1429 | ||||
| 1430 | conversation_insert_into_hashtable(conversation_hashtable_exact_addr_port_anc, conversation); | |||
| 1431 | ||||
| 1432 | return conversation; | |||
| 1433 | } | |||
| 1434 | else { | |||
| 1435 | conversation_element_t *new_key = wmem_alloc(wmem_file_scope(), sizeof(conversation_element_t) * (DEINTD_EXACT_IDX_COUNT+2)); | |||
| 1436 | ||||
| 1437 | new_key[DEINTD_ADDR1_IDX].type = CE_ADDRESS; | |||
| 1438 | if (addr1 != NULL((void*)0)) { | |||
| 1439 | copy_address_wmem(wmem_file_scope(), &new_key[DEINTD_ADDR1_IDX].addr_val, addr1); | |||
| 1440 | } | |||
| 1441 | else { | |||
| 1442 | clear_address(&new_key[DEINTD_ADDR1_IDX].addr_val); | |||
| 1443 | } | |||
| 1444 | ||||
| 1445 | new_key[DEINTD_ADDR2_IDX].type = CE_ADDRESS; | |||
| 1446 | if (addr2 != NULL((void*)0)) { | |||
| 1447 | copy_address_wmem(wmem_file_scope(), &new_key[DEINTD_ADDR2_IDX].addr_val, addr2); | |||
| 1448 | } | |||
| 1449 | else { | |||
| 1450 | clear_address(&new_key[DEINTD_ADDR2_IDX].addr_val); | |||
| 1451 | } | |||
| 1452 | ||||
| 1453 | new_key[DEINTD_PORT1_IDX].type = CE_PORT; | |||
| 1454 | new_key[DEINTD_PORT1_IDX].port_val = port1; | |||
| 1455 | ||||
| 1456 | new_key[DEINTD_PORT2_IDX].type = CE_PORT; | |||
| 1457 | new_key[DEINTD_PORT2_IDX].port_val = port2; | |||
| 1458 | ||||
| 1459 | new_key[DEINTD_ENDP_EXACT_IDX].type = CE_UINT; | |||
| 1460 | new_key[DEINTD_ENDP_EXACT_IDX].uint_val = anchor; | |||
| 1461 | ||||
| 1462 | new_key[DEINTD_ENDP_EXACT_IDX + 1].type = CE_CONVERSATION_TYPE; | |||
| 1463 | new_key[DEINTD_ENDP_EXACT_IDX + 1].conversation_type_val = ctype; | |||
| 1464 | ||||
| 1465 | // set the options and key pointer | |||
| 1466 | conversation->options = options; | |||
| 1467 | conversation->key_ptr = new_key; | |||
| 1468 | ||||
| 1469 | new_index++; | |||
| 1470 | ||||
| 1471 | conversation_insert_into_hashtable(conversation_hashtable_exact_addr_port_anc, conversation); | |||
| 1472 | ||||
| 1473 | return conversation; | |||
| 1474 | } | |||
| 1475 | } | |||
| 1476 | ||||
| 1477 | /* | |||
| 1478 | * Set the port 2 value in a key. Remove the original from table, | |||
| 1479 | * update the options and port values, insert the updated key. | |||
| 1480 | */ | |||
| 1481 | void | |||
| 1482 | conversation_set_port2(conversation_t *conv, const uint32_t port) | |||
| 1483 | { | |||
| 1484 | DISSECTOR_ASSERT_HINT(!(conv->options & CONVERSATION_TEMPLATE),((void) ((!(conv->options & 0x08)) ? (void)0 : (proto_report_dissector_bug ("%s:%u: failed assertion \"%s\" (%s)", "epan/conversation.c" , 1485, "!(conv->options & 0x08)", "Use the conversation_create_from_template function when the CONVERSATION_TEMPLATE bit is set in the options mask" )))) | |||
| 1485 | "Use the conversation_create_from_template function when the CONVERSATION_TEMPLATE bit is set in the options mask")((void) ((!(conv->options & 0x08)) ? (void)0 : (proto_report_dissector_bug ("%s:%u: failed assertion \"%s\" (%s)", "epan/conversation.c" , 1485, "!(conv->options & 0x08)", "Use the conversation_create_from_template function when the CONVERSATION_TEMPLATE bit is set in the options mask" )))); | |||
| 1486 | ||||
| 1487 | DPRINT(("called for port=%d", port))(void)0; | |||
| 1488 | ||||
| 1489 | /* | |||
| 1490 | * If the port 2 value is not wildcarded, don't set it. | |||
| 1491 | */ | |||
| 1492 | if ((!(conv->options & NO_PORT20x02)) || (conv->options & NO_PORT2_FORCE0x04)) | |||
| 1493 | return; | |||
| 1494 | ||||
| 1495 | DINDENT()(void)0; | |||
| 1496 | if (conv->options & NO_ADDR20x01) { | |||
| 1497 | conversation_remove_from_hashtable(conversation_hashtable_no_addr2_or_port2, conv); | |||
| 1498 | } else { | |||
| 1499 | conversation_remove_from_hashtable(conversation_hashtable_no_port2, conv); | |||
| 1500 | } | |||
| 1501 | ||||
| 1502 | // Shift our endpoint element over and set our port. We assume that conv->key_ptr | |||
| 1503 | // was created with conversation_new and that we have enough element slots. | |||
| 1504 | conv->options &= ~NO_PORT20x02; | |||
| 1505 | if (conv->options & NO_ADDR20x01) { | |||
| 1506 | // addr1,port1,endp -> addr1,port1,port2,endp | |||
| 1507 | conv->key_ptr[ENDP_NO_ADDR2_IDX] = conv->key_ptr[ENDP_NO_ADDR2_PORT2_IDX]; | |||
| 1508 | conv->key_ptr[PORT2_NO_ADDR2_IDX].type = CE_PORT; | |||
| 1509 | conv->key_ptr[PORT2_NO_ADDR2_IDX].port_val = port; | |||
| 1510 | conversation_insert_into_hashtable(conversation_hashtable_no_addr2, conv); | |||
| 1511 | } else { | |||
| 1512 | // addr1,port1,addr2,endp -> addr1,port1,addr2,port2,endp | |||
| 1513 | conv->key_ptr[ENDP_EXACT_IDX] = conv->key_ptr[ENDP_NO_PORT2_IDX]; | |||
| 1514 | conv->key_ptr[PORT2_IDX].type = CE_PORT; | |||
| 1515 | conv->key_ptr[PORT2_IDX].port_val = port; | |||
| 1516 | conversation_insert_into_hashtable(conversation_hashtable_exact_addr_port, conv); | |||
| 1517 | } | |||
| 1518 | DENDENT()(void)0; | |||
| 1519 | } | |||
| 1520 | ||||
| 1521 | /* | |||
| 1522 | * Set the address 2 value in a key. Remove the original from | |||
| 1523 | * table, update the options and port values, insert the updated key. | |||
| 1524 | */ | |||
| 1525 | void | |||
| 1526 | conversation_set_addr2(conversation_t *conv, const address *addr) | |||
| 1527 | { | |||
| 1528 | char* addr_str; | |||
| 1529 | DISSECTOR_ASSERT_HINT(!(conv->options & CONVERSATION_TEMPLATE),((void) ((!(conv->options & 0x08)) ? (void)0 : (proto_report_dissector_bug ("%s:%u: failed assertion \"%s\" (%s)", "epan/conversation.c" , 1530, "!(conv->options & 0x08)", "Use the conversation_create_from_template function when the CONVERSATION_TEMPLATE bit is set in the options mask" )))) | |||
| 1530 | "Use the conversation_create_from_template function when the CONVERSATION_TEMPLATE bit is set in the options mask")((void) ((!(conv->options & 0x08)) ? (void)0 : (proto_report_dissector_bug ("%s:%u: failed assertion \"%s\" (%s)", "epan/conversation.c" , 1530, "!(conv->options & 0x08)", "Use the conversation_create_from_template function when the CONVERSATION_TEMPLATE bit is set in the options mask" )))); | |||
| 1531 | ||||
| 1532 | addr_str = address_to_str(NULL((void*)0), addr); | |||
| 1533 | DPRINT(("called for addr=%s", addr_str))(void)0; | |||
| 1534 | wmem_free(NULL((void*)0), addr_str); | |||
| 1535 | ||||
| 1536 | /* | |||
| 1537 | * If the address 2 value is not wildcarded, don't set it. | |||
| 1538 | */ | |||
| 1539 | if (!(conv->options & NO_ADDR20x01)) | |||
| 1540 | return; | |||
| 1541 | ||||
| 1542 | DINDENT()(void)0; | |||
| 1543 | if (conv->options & NO_PORT20x02) { | |||
| 1544 | conversation_remove_from_hashtable(conversation_hashtable_no_addr2_or_port2, conv); | |||
| 1545 | } else { | |||
| 1546 | conversation_remove_from_hashtable(conversation_hashtable_no_addr2, conv); | |||
| 1547 | } | |||
| 1548 | ||||
| 1549 | // Shift our endpoint and, if needed, our port element over and set our address. | |||
| 1550 | // We assume that conv->key_ptr was created with conversation_new and that we have | |||
| 1551 | // enough element slots. | |||
| 1552 | conv->options &= ~NO_ADDR20x01; | |||
| 1553 | wmem_map_t *hashtable; | |||
| 1554 | if (conv->options & NO_PORT20x02) { | |||
| 1555 | // addr1,port1,endp -> addr1,port1,addr2,endp | |||
| 1556 | conv->key_ptr[ENDP_NO_PORT2_IDX] = conv->key_ptr[ENDP_NO_ADDR2_PORT2_IDX]; | |||
| 1557 | hashtable = conversation_hashtable_no_port2; | |||
| 1558 | } else { | |||
| 1559 | // addr1,port1,port2,endp -> addr1,port1,addr2,port2,endp | |||
| 1560 | conv->key_ptr[ENDP_EXACT_IDX] = conv->key_ptr[ENDP_NO_ADDR2_IDX]; | |||
| 1561 | conv->key_ptr[PORT2_IDX] = conv->key_ptr[PORT2_NO_ADDR2_IDX]; | |||
| 1562 | hashtable = conversation_hashtable_exact_addr_port; | |||
| 1563 | } | |||
| 1564 | conv->key_ptr[ADDR2_IDX].type = CE_ADDRESS; | |||
| 1565 | copy_address_wmem(wmem_file_scope(), &conv->key_ptr[ADDR2_IDX].addr_val, addr); | |||
| 1566 | conversation_insert_into_hashtable(hashtable, conv); | |||
| 1567 | DENDENT()(void)0; | |||
| 1568 | } | |||
| 1569 | ||||
| 1570 | static conversation_t *conversation_lookup_hashtable(wmem_map_t *conversation_hashtable, const uint32_t frame_num, conversation_element_t *conv_key) | |||
| 1571 | { | |||
| 1572 | conversation_t* convo = NULL((void*)0); | |||
| 1573 | conversation_t* match = NULL((void*)0); | |||
| 1574 | conversation_t* chain_head = NULL((void*)0); | |||
| 1575 | chain_head = (conversation_t *)wmem_map_lookup(conversation_hashtable, conv_key); | |||
| 1576 | ||||
| 1577 | if (chain_head && (chain_head->setup_frame <= frame_num)) { | |||
| 1578 | match = chain_head; | |||
| 1579 | ||||
| 1580 | if (chain_head->last && (chain_head->last->setup_frame <= frame_num)) | |||
| 1581 | return chain_head->last; | |||
| 1582 | ||||
| 1583 | if (chain_head->latest_found && (chain_head->latest_found->setup_frame <= frame_num)) | |||
| 1584 | match = chain_head->latest_found; | |||
| 1585 | ||||
| 1586 | for (convo = match; convo && convo->setup_frame <= frame_num; convo = convo->next) { | |||
| 1587 | if (convo->setup_frame > match->setup_frame) { | |||
| 1588 | match = convo; | |||
| 1589 | } | |||
| 1590 | } | |||
| 1591 | } | |||
| 1592 | ||||
| 1593 | if (match) { | |||
| 1594 | chain_head->latest_found = match; | |||
| 1595 | } | |||
| 1596 | ||||
| 1597 | return match; | |||
| 1598 | } | |||
| 1599 | ||||
| 1600 | conversation_t *find_conversation_full(const uint32_t frame_num, conversation_element_t *elements) | |||
| 1601 | { | |||
| 1602 | char *el_list_map_key = conversation_element_list_name(NULL((void*)0), elements); | |||
| 1603 | wmem_map_t *el_list_map = (wmem_map_t *) wmem_map_lookup(conversation_hashtable_element_list, el_list_map_key); | |||
| 1604 | g_free(el_list_map_key); | |||
| 1605 | if (!el_list_map) { | |||
| 1606 | return NULL((void*)0); | |||
| 1607 | } | |||
| 1608 | ||||
| 1609 | return conversation_lookup_hashtable(el_list_map, frame_num, elements); | |||
| 1610 | } | |||
| 1611 | ||||
| 1612 | /* | |||
| 1613 | * Search a particular hash table for a conversation with the specified | |||
| 1614 | * {addr1, port1, addr2, port2} and set up before frame_num. | |||
| 1615 | */ | |||
| 1616 | static conversation_t * | |||
| 1617 | conversation_lookup_exact(const uint32_t frame_num, const address *addr1, const uint32_t port1, | |||
| 1618 | const address *addr2, const uint32_t port2, const conversation_type ctype) | |||
| 1619 | { | |||
| 1620 | conversation_element_t key[EXACT_IDX_COUNT] = { | |||
| 1621 | { CE_ADDRESS, .addr_val = *addr1 }, | |||
| 1622 | { CE_PORT, .port_val = port1 }, | |||
| 1623 | { CE_ADDRESS, .addr_val = *addr2 }, | |||
| 1624 | { CE_PORT, .port_val = port2 }, | |||
| 1625 | { CE_CONVERSATION_TYPE, .conversation_type_val = ctype }, | |||
| 1626 | }; | |||
| 1627 | return conversation_lookup_hashtable(conversation_hashtable_exact_addr_port, frame_num, key); | |||
| 1628 | } | |||
| 1629 | ||||
| 1630 | /* | |||
| 1631 | * Search a particular hash table for a conversation with the specified | |||
| 1632 | * {addr1, port1, port2} and set up before frame_num. | |||
| 1633 | */ | |||
| 1634 | static conversation_t * | |||
| 1635 | conversation_lookup_no_addr2(const uint32_t frame_num, const address *addr1, const uint32_t port1, | |||
| 1636 | const uint32_t port2, const conversation_type ctype) | |||
| 1637 | { | |||
| 1638 | conversation_element_t key[NO_ADDR2_IDX_COUNT] = { | |||
| 1639 | { CE_ADDRESS, .addr_val = *addr1 }, | |||
| 1640 | { CE_PORT, .port_val = port1 }, | |||
| 1641 | { CE_PORT, .port_val = port2 }, | |||
| 1642 | { CE_CONVERSATION_TYPE, .conversation_type_val = ctype }, | |||
| 1643 | }; | |||
| 1644 | return conversation_lookup_hashtable(conversation_hashtable_no_addr2, frame_num, key); | |||
| 1645 | } | |||
| 1646 | ||||
| 1647 | /* | |||
| 1648 | * Search a particular hash table for a conversation with the specified | |||
| 1649 | * {addr1, port1, addr2} and set up before frame_num. | |||
| 1650 | */ | |||
| 1651 | static conversation_t * | |||
| 1652 | conversation_lookup_no_port2(const uint32_t frame_num, const address *addr1, const uint32_t port1, | |||
| 1653 | const address *addr2, const conversation_type ctype) | |||
| 1654 | { | |||
| 1655 | conversation_element_t key[NO_PORT2_IDX_COUNT] = { | |||
| 1656 | { CE_ADDRESS, .addr_val = *addr1 }, | |||
| 1657 | { CE_PORT, .port_val = port1 }, | |||
| 1658 | { CE_ADDRESS, .addr_val = *addr2 }, | |||
| 1659 | { CE_CONVERSATION_TYPE, .conversation_type_val = ctype }, | |||
| 1660 | }; | |||
| 1661 | return conversation_lookup_hashtable(conversation_hashtable_no_port2, frame_num, key); | |||
| 1662 | } | |||
| 1663 | ||||
| 1664 | /* | |||
| 1665 | * Search a particular hash table for a conversation with the specified | |||
| 1666 | * {addr1, port1, addr2} and set up before frame_num. | |||
| 1667 | */ | |||
| 1668 | static conversation_t * | |||
| 1669 | conversation_lookup_no_addr2_or_port2(const uint32_t frame_num, const address *addr1, const uint32_t port1, | |||
| 1670 | const conversation_type ctype) | |||
| 1671 | { | |||
| 1672 | conversation_element_t key[NO_ADDR2_PORT2_IDX_COUNT] = { | |||
| 1673 | { CE_ADDRESS, .addr_val = *addr1 }, | |||
| 1674 | { CE_PORT, .port_val = port1 }, | |||
| 1675 | { CE_CONVERSATION_TYPE, .conversation_type_val = ctype }, | |||
| 1676 | }; | |||
| 1677 | return conversation_lookup_hashtable(conversation_hashtable_no_addr2_or_port2, frame_num, key); | |||
| 1678 | } | |||
| 1679 | ||||
| 1680 | /* | |||
| 1681 | * Search a particular hash table for a conversation with the specified | |||
| 1682 | * {addr1, addr2} and set up before frame_num. | |||
| 1683 | */ | |||
| 1684 | static conversation_t * | |||
| 1685 | conversation_lookup_no_ports(const uint32_t frame_num, const address *addr1, | |||
| 1686 | const address *addr2, const conversation_type ctype) | |||
| 1687 | { | |||
| 1688 | conversation_element_t key[ADDRS_IDX_COUNT] = { | |||
| 1689 | { CE_ADDRESS, .addr_val = *addr1 }, | |||
| 1690 | { CE_ADDRESS, .addr_val = *addr2 }, | |||
| 1691 | { CE_CONVERSATION_TYPE, .conversation_type_val = ctype }, | |||
| 1692 | }; | |||
| 1693 | return conversation_lookup_hashtable(conversation_hashtable_exact_addr, frame_num, key); | |||
| 1694 | } | |||
| 1695 | ||||
| 1696 | /* | |||
| 1697 | * Search a particular hash table for a conversation with the specified | |||
| 1698 | * {addr1, port1, addr2, port2, anchor} and set up before frame_num. | |||
| 1699 | */ | |||
| 1700 | static conversation_t * | |||
| 1701 | conversation_lookup_exact_anc(const uint32_t frame_num, const address *addr1, const uint32_t port1, | |||
| 1702 | const address *addr2, const uint32_t port2, const conversation_type ctype, | |||
| 1703 | const uint32_t anchor) | |||
| 1704 | { | |||
| 1705 | conversation_element_t key[DEINTD_EXACT_IDX_COUNT+1] = { | |||
| 1706 | { CE_ADDRESS, .addr_val = *addr1 }, | |||
| 1707 | { CE_ADDRESS, .addr_val = *addr2 }, | |||
| 1708 | { CE_PORT, .port_val = port1 }, | |||
| 1709 | { CE_PORT, .port_val = port2 }, | |||
| 1710 | { CE_UINT, .uint_val = anchor }, | |||
| 1711 | { CE_CONVERSATION_TYPE, .conversation_type_val = ctype }, | |||
| 1712 | }; | |||
| 1713 | return conversation_lookup_hashtable(conversation_hashtable_exact_addr_port_anc, frame_num, key); | |||
| 1714 | } | |||
| 1715 | ||||
| 1716 | /* | |||
| 1717 | * Search a particular hash table for a conversation with the specified | |||
| 1718 | * {addr1, addr2, anchor} and set up before frame_num. | |||
| 1719 | */ | |||
| 1720 | static conversation_t * | |||
| 1721 | conversation_lookup_no_ports_anc(const uint32_t frame_num, const address *addr1, | |||
| 1722 | const address *addr2, const conversation_type ctype, const uint32_t anchor) | |||
| 1723 | { | |||
| 1724 | conversation_element_t key[DEINTD_ADDRS_IDX_COUNT+1] = { | |||
| 1725 | { CE_ADDRESS, .addr_val = *addr1 }, | |||
| 1726 | { CE_ADDRESS, .addr_val = *addr2 }, | |||
| 1727 | { CE_UINT, .uint_val = anchor }, | |||
| 1728 | { CE_CONVERSATION_TYPE, .conversation_type_val = ctype }, | |||
| 1729 | }; | |||
| 1730 | return conversation_lookup_hashtable(conversation_hashtable_exact_addr_anc, frame_num, key); | |||
| 1731 | } | |||
| 1732 | ||||
| 1733 | /* | |||
| 1734 | * Search a particular hash table for a conversation with the specified | |||
| 1735 | * {addr1, port1, port2, anchor} and set up before frame_num. | |||
| 1736 | */ | |||
| 1737 | static conversation_t * | |||
| 1738 | conversation_lookup_no_addr2_anc(const uint32_t frame_num, const address *addr1, const uint32_t port1, | |||
| 1739 | const uint32_t port2, const conversation_type ctype, | |||
| 1740 | const uint32_t anchor) | |||
| 1741 | { | |||
| 1742 | conversation_element_t key[DEINTD_NO_ADDR2_IDX_COUNT] = { | |||
| 1743 | { CE_ADDRESS, .addr_val = *addr1 }, | |||
| 1744 | { CE_PORT, .port_val = port1 }, | |||
| 1745 | { CE_PORT, .port_val = port2 }, | |||
| 1746 | { CE_UINT, .uint_val = anchor }, | |||
| 1747 | { CE_CONVERSATION_TYPE, .conversation_type_val = ctype }, | |||
| 1748 | }; | |||
| 1749 | return conversation_lookup_hashtable(conversation_hashtable_no_addr2_anc , frame_num, key); | |||
| 1750 | } | |||
| 1751 | ||||
| 1752 | /* | |||
| 1753 | * Search a particular hash table for a conversation with the specified | |||
| 1754 | * {addr1, port1, addr2, anchor} and set up before frame_num. | |||
| 1755 | */ | |||
| 1756 | static conversation_t * | |||
| 1757 | conversation_lookup_no_port2_anc(const uint32_t frame_num, const address *addr1, const uint32_t port1, | |||
| 1758 | const address *addr2, const conversation_type ctype, | |||
| 1759 | const uint32_t anchor) | |||
| 1760 | { | |||
| 1761 | conversation_element_t key[DEINTD_NO_PORT2_IDX_COUNT] = { | |||
| 1762 | { CE_ADDRESS, .addr_val = *addr1 }, | |||
| 1763 | { CE_ADDRESS, .addr_val = *addr2 }, | |||
| 1764 | { CE_PORT, .port_val = port1 }, | |||
| 1765 | { CE_UINT, .uint_val = anchor }, | |||
| 1766 | { CE_CONVERSATION_TYPE, .conversation_type_val = ctype }, | |||
| 1767 | }; | |||
| 1768 | return conversation_lookup_hashtable(conversation_hashtable_exact_addr_port_anc, frame_num, key); | |||
| 1769 | } | |||
| 1770 | ||||
| 1771 | /* | |||
| 1772 | * Search a particular hash table for a conversation with the specified | |||
| 1773 | * {addr1, port1, addr2} and set up before frame_num. | |||
| 1774 | */ | |||
| 1775 | static conversation_t * | |||
| 1776 | conversation_lookup_no_addr2_or_port2_anc(const uint32_t frame_num, const address *addr1, const uint32_t port1, | |||
| 1777 | const conversation_type ctype, const uint32_t anchor) | |||
| 1778 | { | |||
| 1779 | conversation_element_t key[DEINTD_NO_ADDR2_PORT2_IDX_COUNT] = { | |||
| 1780 | { CE_ADDRESS, .addr_val = *addr1 }, | |||
| 1781 | { CE_PORT, .port_val = port1 }, | |||
| 1782 | { CE_UINT, .uint_val = anchor }, | |||
| 1783 | { CE_CONVERSATION_TYPE, .conversation_type_val = ctype }, | |||
| 1784 | }; | |||
| 1785 | return conversation_lookup_hashtable(conversation_hashtable_no_addr2_or_port2_anc, frame_num, key); | |||
| 1786 | } | |||
| 1787 | ||||
| 1788 | /* | |||
| 1789 | * Search a particular hash table for a conversation with the specified | |||
| 1790 | * {addr1, addr2, key1, key2, key3} and set up before frame_num. | |||
| 1791 | * At this moment only the deinterlace table is likely to be called. | |||
| 1792 | */ | |||
| 1793 | static conversation_t * | |||
| 1794 | conversation_lookup_deinterlacer(const uint32_t frame_num, const address *addr1, | |||
| 1795 | const address *addr2, const conversation_type ctype, | |||
| 1796 | const uint32_t key1, const uint32_t key2, const uint32_t key3) | |||
| 1797 | { | |||
| 1798 | conversation_element_t key[DEINTR_ENDP_IDX+1] = { | |||
| 1799 | { CE_ADDRESS, .addr_val = *addr1 }, | |||
| 1800 | { CE_ADDRESS, .addr_val = *addr2 }, | |||
| 1801 | { CE_UINT, .uint_val = key1 }, | |||
| 1802 | { CE_UINT, .uint_val = key2 }, | |||
| 1803 | { CE_UINT, .uint_val = key3 }, | |||
| 1804 | { CE_CONVERSATION_TYPE, .conversation_type_val = ctype }, | |||
| 1805 | }; | |||
| 1806 | return conversation_lookup_hashtable(conversation_hashtable_deinterlacer, frame_num, key); | |||
| 1807 | } | |||
| 1808 | ||||
| 1809 | /* | |||
| 1810 | * Given two address/port pairs for a packet, search for a conversation | |||
| 1811 | * containing packets between those address/port pairs. Returns NULL if | |||
| 1812 | * not found. | |||
| 1813 | * | |||
| 1814 | * We try to find the most exact match that we can, and then proceed to | |||
| 1815 | * try wildcard matches on the "addr_b" and/or "port_b" argument if a more | |||
| 1816 | * exact match failed. | |||
| 1817 | * | |||
| 1818 | * Either or both of the "addr_b" and "port_b" arguments may be specified as | |||
| 1819 | * a wildcard by setting the NO_ADDR_B or NO_PORT_B flags in the "options" | |||
| 1820 | * argument. We do only wildcard matches on addresses and ports specified | |||
| 1821 | * as wildcards. | |||
| 1822 | * | |||
| 1823 | * I.e.: | |||
| 1824 | * | |||
| 1825 | * if neither "addr_b" nor "port_b" were specified as wildcards, we | |||
| 1826 | * do an exact match (addr_a/port_a and addr_b/port_b) and, if that | |||
| 1827 | * succeeds, we return a pointer to the matched conversation; | |||
| 1828 | * | |||
| 1829 | * otherwise, if "port_b" wasn't specified as a wildcard, we try to | |||
| 1830 | * match any address 2 with the specified port 2 (addr_a/port_a and | |||
| 1831 | * {any}/port_b) and, if that succeeds, we return a pointer to the | |||
| 1832 | * matched conversation; | |||
| 1833 | * | |||
| 1834 | * otherwise, if "addr_b" wasn't specified as a wildcard, we try to | |||
| 1835 | * match any port 2 with the specified address 2 (addr_a/port_a and | |||
| 1836 | * addr_b/{any}) and, if that succeeds, we return a pointer to the | |||
| 1837 | * matched conversation; | |||
| 1838 | * | |||
| 1839 | * otherwise, we try to match any address 2 and any port 2 | |||
| 1840 | * (addr_a/port_a and {any}/{any}) and, if that succeeds, we return | |||
| 1841 | * a pointer to the matched conversation; | |||
| 1842 | * | |||
| 1843 | * otherwise, we found no matching conversation, and return NULL. | |||
| 1844 | */ | |||
| 1845 | conversation_t * | |||
| 1846 | find_conversation(const uint32_t frame_num, const address *addr_a, const address *addr_b, const conversation_type ctype, | |||
| 1847 | const uint32_t port_a, const uint32_t port_b, const unsigned options) | |||
| 1848 | { | |||
| 1849 | conversation_t *conversation, *other_conv; | |||
| 1850 | ||||
| 1851 | if (!addr_a) { | |||
| 1852 | addr_a = &null_address_; | |||
| 1853 | } | |||
| 1854 | ||||
| 1855 | if (!addr_b) { | |||
| 1856 | addr_b = &null_address_; | |||
| 1857 | } | |||
| 1858 | ||||
| 1859 | DINSTR(char *addr_a_str = address_to_str(NULL, addr_a))(void)0; | |||
| 1860 | DINSTR(char *addr_b_str = address_to_str(NULL, addr_b))(void)0; | |||
| 1861 | /* | |||
| 1862 | * Verify that the correct options are used, if any. | |||
| 1863 | */ | |||
| 1864 | DISSECTOR_ASSERT_HINT((options == 0) || (options & NO_MASK_B), "Use NO_ADDR_B and/or NO_PORT_B as option")((void) (((options == 0) || (options & 0xFFFF0000)) ? (void )0 : (proto_report_dissector_bug("%s:%u: failed assertion \"%s\" (%s)" , "epan/conversation.c", 1864, "(options == 0) || (options & 0xFFFF0000)" , "Use NO_ADDR_B and/or NO_PORT_B as option")))); | |||
| 1865 | /* | |||
| 1866 | * First try an exact match, if we have two addresses and ports. | |||
| 1867 | */ | |||
| 1868 | if (!(options & (NO_ADDR_B0x00010000|NO_PORT_B0x00020000|NO_PORT_X0x00040000|EXACT_EXCLUDED0x00200000))) { | |||
| 1869 | /* | |||
| 1870 | * Neither search address B nor search port B are wildcarded, | |||
| 1871 | * start out with an exact match. | |||
| 1872 | */ | |||
| 1873 | DPRINT(("trying exact match: %s:%d -> %s:%d",(void)0 | |||
| 1874 | addr_a_str, port_a, addr_b_str, port_b))(void)0; | |||
| 1875 | conversation = conversation_lookup_exact(frame_num, addr_a, port_a, addr_b, port_b, ctype); | |||
| 1876 | /* | |||
| 1877 | * Look for an alternate conversation in the opposite direction, which | |||
| 1878 | * might fit better. Note that using the helper functions such as | |||
| 1879 | * find_conversation_pinfo and find_or_create_conversation will finally | |||
| 1880 | * call this function and look for an orientation-agnostic conversation. | |||
| 1881 | * If oriented conversations had to be implemented, amend this code or | |||
| 1882 | * create new functions. | |||
| 1883 | */ | |||
| 1884 | ||||
| 1885 | DPRINT(("trying exact match: %s:%d -> %s:%d",(void)0 | |||
| 1886 | addr_b_str, port_b, addr_a_str, port_a))(void)0; | |||
| 1887 | other_conv = conversation_lookup_exact(frame_num, addr_b, port_b, addr_a, port_a, ctype); | |||
| 1888 | if (other_conv != NULL((void*)0)) { | |||
| 1889 | if (conversation != NULL((void*)0)) { | |||
| 1890 | if(other_conv->conv_index > conversation->conv_index) { | |||
| 1891 | conversation = other_conv; | |||
| 1892 | } | |||
| 1893 | } | |||
| 1894 | else { | |||
| 1895 | conversation = other_conv; | |||
| 1896 | } | |||
| 1897 | } | |||
| 1898 | if ((conversation == NULL((void*)0)) && (addr_a->type == AT_FC)) { | |||
| 1899 | /* In Fibre channel, OXID & RXID are never swapped as | |||
| 1900 | * TCP/UDP ports are in TCP/IP. | |||
| 1901 | */ | |||
| 1902 | DPRINT(("trying exact match: %s:%d -> %s:%d",(void)0 | |||
| 1903 | addr_b_str, port_a, addr_a_str, port_b))(void)0; | |||
| 1904 | conversation = conversation_lookup_exact(frame_num, addr_b, port_a, addr_a, port_b, ctype); | |||
| 1905 | } | |||
| 1906 | DPRINT(("exact match %sfound",conversation?"":"not "))(void)0; | |||
| 1907 | if (conversation != NULL((void*)0)) | |||
| 1908 | goto end; | |||
| 1909 | else if(options & NO_GREEDY0x00100000) | |||
| 1910 | goto end; | |||
| 1911 | } | |||
| 1912 | ||||
| 1913 | /* | |||
| 1914 | * Well, that didn't find anything. Try matches that wildcard | |||
| 1915 | * one of the addresses, if we have two ports. | |||
| 1916 | */ | |||
| 1917 | if (!(options & (NO_PORT_B0x00020000|NO_PORT_X0x00040000))) { | |||
| 1918 | /* | |||
| 1919 | * Search port B isn't wildcarded. | |||
| 1920 | * | |||
| 1921 | * First try looking for a conversation with the specified | |||
| 1922 | * address A and port A as the first address and port, and | |||
| 1923 | * with any address and the specified port B as the second | |||
| 1924 | * address and port. | |||
| 1925 | * ("addr_b" doesn't take part in this lookup.) | |||
| 1926 | */ | |||
| 1927 | DPRINT(("trying wildcarded match: %s:%d -> *:%d",(void)0 | |||
| 1928 | addr_a_str, port_a, port_b))(void)0; | |||
| 1929 | conversation = conversation_lookup_no_addr2(frame_num, addr_a, port_a, port_b, ctype); | |||
| 1930 | if ((conversation == NULL((void*)0)) && (addr_a->type == AT_FC)) { | |||
| 1931 | /* In Fibre channel, OXID & RXID are never swapped as | |||
| 1932 | * TCP/UDP ports are in TCP/IP. | |||
| 1933 | */ | |||
| 1934 | DPRINT(("trying wildcarded match: %s:%d -> *:%d",(void)0 | |||
| 1935 | addr_b_str, port_a, port_b))(void)0; | |||
| 1936 | conversation = conversation_lookup_no_addr2(frame_num, addr_b, port_a, port_b, ctype); | |||
| 1937 | } | |||
| 1938 | if (conversation != NULL((void*)0)) { | |||
| 1939 | /* | |||
| 1940 | * If search address B isn't wildcarded, and this is for a | |||
| 1941 | * connection-oriented protocol, set the second address for this | |||
| 1942 | * conversation to address B, as that's the address that matched the | |||
| 1943 | * wildcarded second address for this conversation. | |||
| 1944 | * | |||
| 1945 | * (This assumes that, for all connection oriented protocols, the | |||
| 1946 | * endpoints of a connection have only one address each, i.e. you | |||
| 1947 | * don't get packets in a given direction coming from more than one | |||
| 1948 | * address, unless the CONVERSATION_TEMPLATE option is set.) | |||
| 1949 | */ | |||
| 1950 | DPRINT(("wildcarded dest address match found"))(void)0; | |||
| 1951 | if (!(conversation->options & NO_ADDR20x01) && ctype != CONVERSATION_UDP) | |||
| 1952 | { | |||
| 1953 | if (!(conversation->options & CONVERSATION_TEMPLATE0x08)) | |||
| 1954 | { | |||
| 1955 | conversation_set_addr2(conversation, addr_b); | |||
| 1956 | } | |||
| 1957 | else | |||
| 1958 | { | |||
| 1959 | conversation = | |||
| 1960 | conversation_create_from_template(conversation, addr_b, 0); | |||
| 1961 | } | |||
| 1962 | } | |||
| 1963 | goto end; | |||
| 1964 | } | |||
| 1965 | ||||
| 1966 | /* | |||
| 1967 | * Well, that didn't find anything. | |||
| 1968 | * If search address B was specified, try looking for a | |||
| 1969 | * conversation with the specified address B and port B as | |||
| 1970 | * the first address and port, and with any address and the | |||
| 1971 | * specified port A as the second address and port (this | |||
| 1972 | * packet may be going in the opposite direction from the | |||
| 1973 | * first packet in the conversation). | |||
| 1974 | * ("addr_a" doesn't take part in this lookup.) | |||
| 1975 | */ | |||
| 1976 | if (!(options & NO_ADDR_B0x00010000)) { | |||
| 1977 | DPRINT(("trying wildcarded match: %s:%d -> *:%d",(void)0 | |||
| 1978 | addr_b_str, port_b, port_a))(void)0; | |||
| 1979 | conversation = conversation_lookup_no_addr2(frame_num, addr_b, port_b, port_a, ctype); | |||
| 1980 | if (conversation != NULL((void*)0)) { | |||
| 1981 | /* | |||
| 1982 | * If this is for a connection-oriented | |||
| 1983 | * protocol, set the second address for | |||
| 1984 | * this conversation to address A, as | |||
| 1985 | * that's the address that matched the | |||
| 1986 | * wildcarded second address for this | |||
| 1987 | * conversation. | |||
| 1988 | */ | |||
| 1989 | DPRINT(("match found"))(void)0; | |||
| 1990 | if (ctype != CONVERSATION_UDP) { | |||
| 1991 | if (!(conversation->options & CONVERSATION_TEMPLATE0x08)) | |||
| 1992 | { | |||
| 1993 | conversation_set_addr2(conversation, addr_a); | |||
| 1994 | } | |||
| 1995 | else | |||
| 1996 | { | |||
| 1997 | conversation = | |||
| 1998 | conversation_create_from_template(conversation, addr_a, 0); | |||
| 1999 | } | |||
| 2000 | } | |||
| 2001 | goto end; | |||
| 2002 | } | |||
| 2003 | } | |||
| 2004 | } | |||
| 2005 | ||||
| 2006 | /* | |||
| 2007 | * Well, that didn't find anything. Try matches that wildcard | |||
| 2008 | * one of the ports, if we have two addresses. | |||
| 2009 | */ | |||
| 2010 | if (!(options & (NO_ADDR_B0x00010000|NO_PORT_X0x00040000))) { | |||
| 2011 | /* | |||
| 2012 | * Search address B isn't wildcarded. | |||
| 2013 | * | |||
| 2014 | * First try looking for a conversation with the specified | |||
| 2015 | * address A and port A as the first address and port, and | |||
| 2016 | * with the specified address B and any port as the second | |||
| 2017 | * address and port. | |||
| 2018 | * ("port_b" doesn't take part in this lookup.) | |||
| 2019 | */ | |||
| 2020 | DPRINT(("trying wildcarded match: %s:%d -> %s:*",(void)0 | |||
| 2021 | addr_a_str, port_a, addr_b_str))(void)0; | |||
| 2022 | conversation = conversation_lookup_no_port2(frame_num, addr_a, port_a, addr_b, ctype); | |||
| 2023 | if ((conversation == NULL((void*)0)) && (addr_a->type == AT_FC)) { | |||
| 2024 | /* In Fibre channel, OXID & RXID are never swapped as | |||
| 2025 | * TCP/UDP ports are in TCP/IP | |||
| 2026 | */ | |||
| 2027 | DPRINT(("trying wildcarded match: %s:%d -> %s:*", addr_b_str, port_a, addr_a_str))(void)0; | |||
| 2028 | conversation = conversation_lookup_no_port2(frame_num, addr_b, port_a, addr_a, ctype); | |||
| 2029 | } | |||
| 2030 | if (conversation != NULL((void*)0)) { | |||
| 2031 | /* | |||
| 2032 | * If search port B isn't wildcarded, and this is for a connection- | |||
| 2033 | * oriented protocol, set the second port for this conversation to | |||
| 2034 | * port B, as that's the port that matched the wildcarded second port | |||
| 2035 | * for this conversation. | |||
| 2036 | * | |||
| 2037 | * (This assumes that, for all connection oriented protocols, the | |||
| 2038 | * endpoints of a connection have only one port each, i.e. you don't | |||
| 2039 | * get packets in a given direction coming from more than one port, | |||
| 2040 | * unless the CONVERSATION_TEMPLATE option is set.) | |||
| 2041 | */ | |||
| 2042 | DPRINT(("match found"))(void)0; | |||
| 2043 | if (!(conversation->options & NO_PORT20x02) && ctype != CONVERSATION_UDP) | |||
| 2044 | { | |||
| 2045 | if (!(conversation->options & CONVERSATION_TEMPLATE0x08)) | |||
| 2046 | { | |||
| 2047 | conversation_set_port2(conversation, port_b); | |||
| 2048 | } | |||
| 2049 | else | |||
| 2050 | { | |||
| 2051 | conversation = | |||
| 2052 | conversation_create_from_template(conversation, 0, port_b); | |||
| 2053 | } | |||
| 2054 | } | |||
| 2055 | goto end; | |||
| 2056 | } | |||
| 2057 | ||||
| 2058 | /* | |||
| 2059 | * Well, that didn't find anything. | |||
| 2060 | * If search port B was specified, try looking for a | |||
| 2061 | * conversation with the specified address B and port B | |||
| 2062 | * as the first address and port, and with the specified | |||
| 2063 | * address A and any port as the second address and port | |||
| 2064 | * (this packet may be going in the opposite direction | |||
| 2065 | * from the first packet in the conversation). | |||
| 2066 | * ("port_a" doesn't take part in this lookup.) | |||
| 2067 | */ | |||
| 2068 | if (!(options & NO_PORT_B0x00020000)) { | |||
| 2069 | DPRINT(("trying wildcarded match: %s:%d -> %s:*",(void)0 | |||
| 2070 | addr_b_str, port_b, addr_a_str))(void)0; | |||
| 2071 | conversation = conversation_lookup_no_port2(frame_num, addr_b, port_b, addr_a, ctype); | |||
| 2072 | if (conversation != NULL((void*)0)) { | |||
| 2073 | /* | |||
| 2074 | * If this is for a connection-oriented | |||
| 2075 | * protocol, set the second port for | |||
| 2076 | * this conversation to port A, as | |||
| 2077 | * that's the address that matched the | |||
| 2078 | * wildcarded second address for this | |||
| 2079 | * conversation. | |||
| 2080 | */ | |||
| 2081 | DPRINT(("match found"))(void)0; | |||
| 2082 | if (ctype != CONVERSATION_UDP) | |||
| 2083 | { | |||
| 2084 | if (!(conversation->options & CONVERSATION_TEMPLATE0x08)) | |||
| 2085 | { | |||
| 2086 | conversation_set_port2(conversation, port_a); | |||
| 2087 | } | |||
| 2088 | else | |||
| 2089 | { | |||
| 2090 | conversation = | |||
| 2091 | conversation_create_from_template(conversation, 0, port_a); | |||
| 2092 | } | |||
| 2093 | } | |||
| 2094 | goto end; | |||
| 2095 | } | |||
| 2096 | } | |||
| 2097 | if(options & NO_GREEDY0x00100000) { | |||
| 2098 | goto end; | |||
| 2099 | } | |||
| 2100 | } | |||
| 2101 | ||||
| 2102 | /* | |||
| 2103 | * Well, that didn't find anything. Try matches that wildcard | |||
| 2104 | * one address/port pair. | |||
| 2105 | * | |||
| 2106 | * First try looking for a conversation with the specified address A | |||
| 2107 | * and port A as the first address and port. | |||
| 2108 | * (Neither "addr_b" nor "port_b" take part in this lookup.) | |||
| 2109 | */ | |||
| 2110 | if (!(options & NO_PORT_X0x00040000)) { | |||
| 2111 | DPRINT(("trying wildcarded match: %s:%d -> *:*", addr_a_str, port_a))(void)0; | |||
| 2112 | conversation = conversation_lookup_no_addr2_or_port2(frame_num, addr_a, port_a, ctype); | |||
| 2113 | if (conversation != NULL((void*)0)) { | |||
| 2114 | /* | |||
| 2115 | * If this is for a connection-oriented protocol: | |||
| 2116 | * | |||
| 2117 | * if search address B isn't wildcarded, set the | |||
| 2118 | * second address for this conversation to address | |||
| 2119 | * B, as that's the address that matched the | |||
| 2120 | * wildcarded second address for this conversation; | |||
| 2121 | * | |||
| 2122 | * if search port B isn't wildcarded, set the | |||
| 2123 | * second port for this conversation to port B, | |||
| 2124 | * as that's the port that matched the wildcarded | |||
| 2125 | * second port for this conversation. | |||
| 2126 | */ | |||
| 2127 | DPRINT(("match found"))(void)0; | |||
| 2128 | if (ctype != CONVERSATION_UDP) | |||
| 2129 | { | |||
| 2130 | if (!(conversation->options & CONVERSATION_TEMPLATE0x08)) | |||
| 2131 | { | |||
| 2132 | if (!(conversation->options & NO_ADDR20x01)) | |||
| 2133 | conversation_set_addr2(conversation, addr_b); | |||
| 2134 | if (!(conversation->options & NO_PORT20x02)) | |||
| 2135 | conversation_set_port2(conversation, port_b); | |||
| 2136 | } | |||
| 2137 | else | |||
| 2138 | { | |||
| 2139 | conversation = | |||
| 2140 | conversation_create_from_template(conversation, addr_b, port_b); | |||
| 2141 | } | |||
| 2142 | } | |||
| 2143 | goto end; | |||
| 2144 | } | |||
| 2145 | /* for Infiniband, don't try to look in addresses of reverse | |||
| 2146 | * direction, because it could be another different | |||
| 2147 | * valid conversation than what is being searched using | |||
| 2148 | * addr_a, port_a. | |||
| 2149 | */ | |||
| 2150 | if (ctype != CONVERSATION_IBQP) | |||
| 2151 | { | |||
| 2152 | ||||
| 2153 | /* | |||
| 2154 | * Well, that didn't find anything. | |||
| 2155 | * If search address and port B were specified, try looking for a | |||
| 2156 | * conversation with the specified address B and port B as the | |||
| 2157 | * first address and port, and with any second address and port | |||
| 2158 | * (this packet may be going in the opposite direction from the | |||
| 2159 | * first packet in the conversation). | |||
| 2160 | * (Neither "addr_a" nor "port_a" take part in this lookup.) | |||
| 2161 | */ | |||
| 2162 | if (addr_a->type == AT_FC) { | |||
| 2163 | DPRINT(("trying wildcarded match: %s:%d -> *:*",(void)0 | |||
| 2164 | addr_b_str, port_a))(void)0; | |||
| 2165 | conversation = conversation_lookup_no_addr2_or_port2(frame_num, addr_b, port_a, ctype); | |||
| 2166 | } else { | |||
| 2167 | DPRINT(("trying wildcarded match: %s:%d -> *:*",(void)0 | |||
| 2168 | addr_b_str, port_b))(void)0; | |||
| 2169 | conversation = conversation_lookup_no_addr2_or_port2(frame_num, addr_b, port_b, ctype); | |||
| 2170 | } | |||
| 2171 | if (conversation != NULL((void*)0)) { | |||
| 2172 | /* | |||
| 2173 | * If this is for a connection-oriented protocol, set the | |||
| 2174 | * second address for this conversation to address A, as | |||
| 2175 | * that's the address that matched the wildcarded second | |||
| 2176 | * address for this conversation, and set the second port | |||
| 2177 | * for this conversation to port A, as that's the port | |||
| 2178 | * that matched the wildcarded second port for this | |||
| 2179 | * conversation. | |||
| 2180 | */ | |||
| 2181 | DPRINT(("match found"))(void)0; | |||
| 2182 | if (ctype != CONVERSATION_UDP) | |||
| 2183 | { | |||
| 2184 | if (!(conversation->options & CONVERSATION_TEMPLATE0x08)) | |||
| 2185 | { | |||
| 2186 | conversation_set_addr2(conversation, addr_a); | |||
| 2187 | conversation_set_port2(conversation, port_a); | |||
| 2188 | } | |||
| 2189 | else | |||
| 2190 | { | |||
| 2191 | conversation = conversation_create_from_template(conversation, addr_a, port_a); | |||
| 2192 | } | |||
| 2193 | } | |||
| 2194 | goto end; | |||
| 2195 | } | |||
| 2196 | } | |||
| 2197 | } | |||
| 2198 | ||||
| 2199 | /* | |||
| 2200 | * Well, that didn't find anything. Try matches between two | |||
| 2201 | * addresses, but no ports. Typically ETH and IP protocols fall | |||
| 2202 | * into this category. | |||
| 2203 | * | |||
| 2204 | * First try looking for a conversation with the specified address A | |||
| 2205 | * and address B. | |||
| 2206 | * (Neither "port_a" nor "port_b" take part in this lookup.) | |||
| 2207 | */ | |||
| 2208 | if (options & NO_PORT_X0x00040000) { | |||
| 2209 | /* | |||
| 2210 | * Search for conversations between two addresses, strictly | |||
| 2211 | */ | |||
| 2212 | DPRINT(("trying exact match: %s -> %s",(void)0 | |||
| 2213 | addr_a_str, addr_b_str))(void)0; | |||
| 2214 | conversation = conversation_lookup_no_ports(frame_num, addr_a, addr_b, ctype); | |||
| 2215 | ||||
| 2216 | if (conversation != NULL((void*)0)) { | |||
| 2217 | DPRINT(("match found"))(void)0; | |||
| 2218 | goto end; | |||
| 2219 | } | |||
| 2220 | /* | |||
| 2221 | * Look for a conversation in the opposite direction. | |||
| 2222 | */ | |||
| 2223 | else { | |||
| 2224 | DPRINT(("trying exact match: %s -> %s",(void)0 | |||
| 2225 | addr_b_str, addr_a_str))(void)0; | |||
| 2226 | conversation = conversation_lookup_no_ports(frame_num, addr_b, addr_a, ctype); | |||
| 2227 | if (conversation != NULL((void*)0)) { | |||
| 2228 | DPRINT(("match found"))(void)0; | |||
| 2229 | goto end; | |||
| 2230 | } | |||
| 2231 | } | |||
| 2232 | } | |||
| 2233 | ||||
| 2234 | DPRINT(("no matches found"))(void)0; | |||
| 2235 | ||||
| 2236 | /* | |||
| 2237 | * We found no conversation. | |||
| 2238 | */ | |||
| 2239 | conversation = NULL((void*)0); | |||
| 2240 | ||||
| 2241 | end: | |||
| 2242 | DINSTR(wmem_free(NULL, addr_a_str))(void)0; | |||
| 2243 | DINSTR(wmem_free(NULL, addr_b_str))(void)0; | |||
| 2244 | return conversation; | |||
| 2245 | } | |||
| 2246 | ||||
| 2247 | conversation_t * | |||
| 2248 | find_conversation_deinterlaced(const uint32_t frame_num, const address *addr_a, const address *addr_b, const conversation_type ctype, | |||
| 2249 | const uint32_t port_a, const uint32_t port_b, const uint32_t anchor, const unsigned options) | |||
| 2250 | { | |||
| 2251 | conversation_t *conversation, *other_conv; | |||
| 2252 | ||||
| 2253 | if (!addr_a) { | |||
| 2254 | addr_a = &null_address_; | |||
| 2255 | } | |||
| 2256 | ||||
| 2257 | if (!addr_b) { | |||
| 2258 | addr_b = &null_address_; | |||
| 2259 | } | |||
| 2260 | ||||
| 2261 | DINSTR(char *addr_a_str = address_to_str(NULL, addr_a))(void)0; | |||
| 2262 | DINSTR(char *addr_b_str = address_to_str(NULL, addr_b))(void)0; | |||
| 2263 | ||||
| 2264 | /* | |||
| 2265 | * First try an exact match, if we have two addresses and ports. | |||
| 2266 | */ | |||
| 2267 | if (!(options & (NO_ADDR_B0x00010000|NO_PORT_B0x00020000|NO_PORTS0x010|EXACT_EXCLUDED0x00200000) )) { | |||
| 2268 | /* | |||
| 2269 | * Neither search address B nor search port B are wildcarded, | |||
| 2270 | * start out with an exact match. | |||
| 2271 | */ | |||
| 2272 | DPRINT(("trying exact match: %s:%d -> %s:%d",(void)0 | |||
| 2273 | addr_a_str, port_a, addr_b_str, port_b))(void)0; | |||
| 2274 | conversation = conversation_lookup_exact_anc(frame_num, addr_a, port_a, addr_b, port_b, ctype, anchor); | |||
| 2275 | /* | |||
| 2276 | * Look for an alternate conversation in the opposite direction, which | |||
| 2277 | * might fit better. Note that using the helper functions such as | |||
| 2278 | * find_conversation_pinfo and find_or_create_conversation will finally | |||
| 2279 | * call this function and look for an orientation-agnostic conversation. | |||
| 2280 | * If oriented conversations had to be implemented, amend this code or | |||
| 2281 | * create new functions. | |||
| 2282 | */ | |||
| 2283 | ||||
| 2284 | DPRINT(("trying exact match: %s:%d -> %s:%d",(void)0 | |||
| 2285 | addr_b_str, port_b, addr_a_str, port_a))(void)0; | |||
| 2286 | other_conv = conversation_lookup_exact_anc(frame_num, addr_b, port_b, addr_a, port_a, ctype, anchor); | |||
| 2287 | if (other_conv != NULL((void*)0)) { | |||
| 2288 | if (conversation != NULL((void*)0)) { | |||
| 2289 | if(other_conv->conv_index > conversation->conv_index) { | |||
| 2290 | conversation = other_conv; | |||
| 2291 | } | |||
| 2292 | } | |||
| 2293 | else { | |||
| 2294 | conversation = other_conv; | |||
| 2295 | } | |||
| 2296 | } | |||
| 2297 | if ((conversation == NULL((void*)0)) && (addr_a->type == AT_FC)) { | |||
| 2298 | /* In Fibre channel, OXID & RXID are never swapped as | |||
| 2299 | * TCP/UDP ports are in TCP/IP. | |||
| 2300 | */ | |||
| 2301 | DPRINT(("trying exact match: %s:%d -> %s:%d",(void)0 | |||
| 2302 | addr_b_str, port_a, addr_a_str, port_b))(void)0; | |||
| 2303 | conversation = conversation_lookup_exact_anc(frame_num, addr_b, port_a, addr_a, port_b, ctype, anchor); | |||
| 2304 | } | |||
| 2305 | DPRINT(("exact match %sfound",conversation?"":"not "))(void)0; | |||
| 2306 | if (conversation != NULL((void*)0)) { | |||
| 2307 | goto end; | |||
| 2308 | } | |||
| 2309 | else if(options & NO_GREEDY0x00100000) { | |||
| 2310 | goto end; | |||
| 2311 | } | |||
| 2312 | } | |||
| 2313 | ||||
| 2314 | /* | |||
| 2315 | * Well, that didn't find anything. Try matches that wildcard | |||
| 2316 | * one of the addresses, if we have two ports. | |||
| 2317 | */ | |||
| 2318 | if (!(options & (NO_PORT_B0x00020000|NO_PORTS0x010))) { | |||
| 2319 | /* | |||
| 2320 | * Search port B isn't wildcarded. | |||
| 2321 | * | |||
| 2322 | * First try looking for a conversation with the specified | |||
| 2323 | * address A and port A as the first address and port, and | |||
| 2324 | * with any address and the specified port B as the second | |||
| 2325 | * address and port. | |||
| 2326 | * ("addr_b" doesn't take part in this lookup.) | |||
| 2327 | */ | |||
| 2328 | DPRINT(("trying wildcarded match: %s:%d -> *:%d",(void)0 | |||
| 2329 | addr_a_str, port_a, port_b))(void)0; | |||
| 2330 | conversation = conversation_lookup_no_addr2_anc(frame_num, addr_a, port_a, port_b, ctype, anchor); | |||
| 2331 | if ((conversation == NULL((void*)0)) && (addr_a->type == AT_FC)) { | |||
| 2332 | /* In Fibre channel, OXID & RXID are never swapped as | |||
| 2333 | * TCP/UDP ports are in TCP/IP. | |||
| 2334 | */ | |||
| 2335 | DPRINT(("trying wildcarded match: %s:%d -> *:%d",(void)0 | |||
| 2336 | addr_b_str, port_a, port_b))(void)0; | |||
| 2337 | conversation = conversation_lookup_no_addr2_anc(frame_num, addr_b, port_a, port_b, ctype, anchor); | |||
| 2338 | } | |||
| 2339 | if (conversation != NULL((void*)0)) { | |||
| 2340 | /* | |||
| 2341 | * If search address B isn't wildcarded, and this is for a | |||
| 2342 | * connection-oriented protocol, set the second address for this | |||
| 2343 | * conversation to address B, as that's the address that matched the | |||
| 2344 | * wildcarded second address for this conversation. | |||
| 2345 | * | |||
| 2346 | * (This assumes that, for all connection oriented protocols, the | |||
| 2347 | * endpoints of a connection have only one address each, i.e. you | |||
| 2348 | * don't get packets in a given direction coming from more than one | |||
| 2349 | * address, unless the CONVERSATION_TEMPLATE option is set.) | |||
| 2350 | */ | |||
| 2351 | DPRINT(("wildcarded dest address match found"))(void)0; | |||
| 2352 | if (!(conversation->options & NO_ADDR20x01) && ctype != CONVERSATION_UDP) | |||
| 2353 | { | |||
| 2354 | if (!(conversation->options & CONVERSATION_TEMPLATE0x08)) | |||
| 2355 | { | |||
| 2356 | conversation_set_addr2(conversation, addr_b); | |||
| 2357 | } | |||
| 2358 | else | |||
| 2359 | { | |||
| 2360 | conversation = | |||
| 2361 | conversation_create_from_template(conversation, addr_b, 0); | |||
| 2362 | } | |||
| 2363 | } | |||
| 2364 | goto end; | |||
| 2365 | } | |||
| 2366 | ||||
| 2367 | /* | |||
| 2368 | * Well, that didn't find anything. | |||
| 2369 | * If search address B was specified, try looking for a | |||
| 2370 | * conversation with the specified address B and port B as | |||
| 2371 | * the first address and port, and with any address and the | |||
| 2372 | * specified port A as the second address and port (this | |||
| 2373 | * packet may be going in the opposite direction from the | |||
| 2374 | * first packet in the conversation). | |||
| 2375 | * ("addr_a" doesn't take part in this lookup.) | |||
| 2376 | */ | |||
| 2377 | if (!(options & NO_ADDR_B0x00010000)) { | |||
| 2378 | DPRINT(("trying wildcarded match: %s:%d -> *:%d",(void)0 | |||
| 2379 | addr_b_str, port_b, port_a))(void)0; | |||
| 2380 | conversation = conversation_lookup_no_addr2_anc(frame_num, addr_b, port_b, port_a, ctype, anchor); | |||
| 2381 | if (conversation != NULL((void*)0)) { | |||
| 2382 | /* | |||
| 2383 | * If this is for a connection-oriented | |||
| 2384 | * protocol, set the second address for | |||
| 2385 | * this conversation to address A, as | |||
| 2386 | * that's the address that matched the | |||
| 2387 | * wildcarded second address for this | |||
| 2388 | * conversation. | |||
| 2389 | */ | |||
| 2390 | DPRINT(("match found"))(void)0; | |||
| 2391 | if (ctype != CONVERSATION_UDP) { | |||
| 2392 | if (!(conversation->options & CONVERSATION_TEMPLATE0x08)) | |||
| 2393 | { | |||
| 2394 | conversation_set_addr2(conversation, addr_a); | |||
| 2395 | } | |||
| 2396 | else | |||
| 2397 | { | |||
| 2398 | conversation = | |||
| 2399 | conversation_create_from_template(conversation, addr_a, 0); | |||
| 2400 | } | |||
| 2401 | } | |||
| 2402 | goto end; | |||
| 2403 | } | |||
| 2404 | } | |||
| 2405 | } | |||
| 2406 | ||||
| 2407 | /* | |||
| 2408 | * Well, that didn't find anything. Try matches that wildcard | |||
| 2409 | * one of the ports, if we have two addresses. | |||
| 2410 | */ | |||
| 2411 | if (!(options & (NO_ADDR_B0x00010000|NO_PORTS0x010))) { | |||
| 2412 | /* | |||
| 2413 | * Search address B isn't wildcarded. | |||
| 2414 | * | |||
| 2415 | * First try looking for a conversation with the specified | |||
| 2416 | * address A and port A as the first address and port, and | |||
| 2417 | * with the specified address B and any port as the second | |||
| 2418 | * address and port. | |||
| 2419 | * ("port_b" doesn't take part in this lookup.) | |||
| 2420 | */ | |||
| 2421 | DPRINT(("trying wildcarded match: %s:%d -> %s:*",(void)0 | |||
| 2422 | addr_a_str, port_a, addr_b_str))(void)0; | |||
| 2423 | conversation = conversation_lookup_no_port2_anc(frame_num, addr_a, port_a, addr_b, ctype, anchor); | |||
| 2424 | if ((conversation == NULL((void*)0)) && (addr_a->type == AT_FC)) { | |||
| 2425 | /* In Fibre channel, OXID & RXID are never swapped as | |||
| 2426 | * TCP/UDP ports are in TCP/IP | |||
| 2427 | */ | |||
| 2428 | DPRINT(("trying wildcarded match: %s:%d -> %s:*", addr_b_str, port_a, addr_a_str))(void)0; | |||
| 2429 | conversation = conversation_lookup_no_port2_anc(frame_num, addr_b, port_a, addr_a, ctype, anchor); | |||
| 2430 | } | |||
| 2431 | if (conversation != NULL((void*)0)) { | |||
| 2432 | /* | |||
| 2433 | * If search port B isn't wildcarded, and this is for a connection- | |||
| 2434 | * oriented protocol, set the second port for this conversation to | |||
| 2435 | * port B, as that's the port that matched the wildcarded second port | |||
| 2436 | * for this conversation. | |||
| 2437 | * | |||
| 2438 | * (This assumes that, for all connection oriented protocols, the | |||
| 2439 | * endpoints of a connection have only one port each, i.e. you don't | |||
| 2440 | * get packets in a given direction coming from more than one port, | |||
| 2441 | * unless the CONVERSATION_TEMPLATE option is set.) | |||
| 2442 | */ | |||
| 2443 | DPRINT(("match found"))(void)0; | |||
| 2444 | if (!(conversation->options & NO_PORT20x02) && ctype != CONVERSATION_UDP) | |||
| 2445 | { | |||
| 2446 | if (!(conversation->options & CONVERSATION_TEMPLATE0x08)) | |||
| 2447 | { | |||
| 2448 | conversation_set_port2(conversation, port_b); | |||
| 2449 | } | |||
| 2450 | else | |||
| 2451 | { | |||
| 2452 | conversation = | |||
| 2453 | conversation_create_from_template(conversation, 0, port_b); | |||
| 2454 | } | |||
| 2455 | } | |||
| 2456 | goto end; | |||
| 2457 | } | |||
| 2458 | ||||
| 2459 | /* | |||
| 2460 | * Well, that didn't find anything. | |||
| 2461 | * If search port B was specified, try looking for a | |||
| 2462 | * conversation with the specified address B and port B | |||
| 2463 | * as the first address and port, and with the specified | |||
| 2464 | * address A and any port as the second address and port | |||
| 2465 | * (this packet may be going in the opposite direction | |||
| 2466 | * from the first packet in the conversation). | |||
| 2467 | * ("port_a" doesn't take part in this lookup.) | |||
| 2468 | */ | |||
| 2469 | if (!(options & NO_PORT_B0x00020000)) { | |||
| 2470 | DPRINT(("trying wildcarded match: %s:%d -> %s:*",(void)0 | |||
| 2471 | addr_b_str, port_b, addr_a_str))(void)0; | |||
| 2472 | conversation = conversation_lookup_no_port2_anc(frame_num, addr_b, port_b, addr_a, ctype, anchor); | |||
| 2473 | if (conversation != NULL((void*)0)) { | |||
| 2474 | /* | |||
| 2475 | * If this is for a connection-oriented | |||
| 2476 | * protocol, set the second port for | |||
| 2477 | * this conversation to port A, as | |||
| 2478 | * that's the address that matched the | |||
| 2479 | * wildcarded second address for this | |||
| 2480 | * conversation. | |||
| 2481 | */ | |||
| 2482 | DPRINT(("match found"))(void)0; | |||
| 2483 | if (ctype != CONVERSATION_UDP) | |||
| 2484 | { | |||
| 2485 | if (!(conversation->options & CONVERSATION_TEMPLATE0x08)) | |||
| 2486 | { | |||
| 2487 | conversation_set_port2(conversation, port_a); | |||
| 2488 | } | |||
| 2489 | else | |||
| 2490 | { | |||
| 2491 | conversation = | |||
| 2492 | conversation_create_from_template(conversation, 0, port_a); | |||
| 2493 | } | |||
| 2494 | } | |||
| 2495 | goto end; | |||
| 2496 | } | |||
| 2497 | } | |||
| 2498 | if(options & NO_GREEDY0x00100000) { | |||
| 2499 | goto end; | |||
| 2500 | } | |||
| 2501 | } | |||
| 2502 | ||||
| 2503 | /* | |||
| 2504 | * Well, that didn't find anything. Try matches that wildcard | |||
| 2505 | * one address/port pair. | |||
| 2506 | * | |||
| 2507 | * First try looking for a conversation with the specified address A | |||
| 2508 | * and port A as the first address and port. | |||
| 2509 | * (Neither "addr_b" nor "port_b" take part in this lookup.) | |||
| 2510 | */ | |||
| 2511 | DPRINT(("trying wildcarded match: %s:%d -> *:*", addr_a_str, port_a))(void)0; | |||
| 2512 | conversation = conversation_lookup_no_addr2_or_port2_anc(frame_num, addr_a, port_a, ctype, anchor); | |||
| 2513 | if (conversation != NULL((void*)0)) { | |||
| 2514 | /* | |||
| 2515 | * If this is for a connection-oriented protocol: | |||
| 2516 | * | |||
| 2517 | * if search address B isn't wildcarded, set the | |||
| 2518 | * second address for this conversation to address | |||
| 2519 | * B, as that's the address that matched the | |||
| 2520 | * wildcarded second address for this conversation; | |||
| 2521 | * | |||
| 2522 | * if search port B isn't wildcarded, set the | |||
| 2523 | * second port for this conversation to port B, | |||
| 2524 | * as that's the port that matched the wildcarded | |||
| 2525 | * second port for this conversation. | |||
| 2526 | */ | |||
| 2527 | DPRINT(("match found"))(void)0; | |||
| 2528 | if (ctype != CONVERSATION_UDP) | |||
| 2529 | { | |||
| 2530 | if (!(conversation->options & CONVERSATION_TEMPLATE0x08)) | |||
| 2531 | { | |||
| 2532 | if (!(conversation->options & NO_ADDR20x01)) | |||
| 2533 | conversation_set_addr2(conversation, addr_b); | |||
| 2534 | if (!(conversation->options & NO_PORT20x02)) | |||
| 2535 | conversation_set_port2(conversation, port_b); | |||
| 2536 | } | |||
| 2537 | else | |||
| 2538 | { | |||
| 2539 | conversation = | |||
| 2540 | conversation_create_from_template(conversation, addr_b, port_b); | |||
| 2541 | } | |||
| 2542 | } | |||
| 2543 | goto end; | |||
| 2544 | } | |||
| 2545 | ||||
| 2546 | /* for Infiniband, don't try to look in addresses of reverse | |||
| 2547 | * direction, because it could be another different | |||
| 2548 | * valid conversation than what is being searched using | |||
| 2549 | * addr_a, port_a. | |||
| 2550 | */ | |||
| 2551 | if (ctype != CONVERSATION_IBQP) | |||
| 2552 | { | |||
| 2553 | ||||
| 2554 | /* | |||
| 2555 | * Well, that didn't find anything. | |||
| 2556 | * If search address and port B were specified, try looking for a | |||
| 2557 | * conversation with the specified address B and port B as the | |||
| 2558 | * first address and port, and with any second address and port | |||
| 2559 | * (this packet may be going in the opposite direction from the | |||
| 2560 | * first packet in the conversation). | |||
| 2561 | * (Neither "addr_a" nor "port_a" take part in this lookup.) | |||
| 2562 | */ | |||
| 2563 | if (addr_a->type == AT_FC) { | |||
| 2564 | DPRINT(("trying wildcarded match: %s:%d -> *:*",(void)0 | |||
| 2565 | addr_b_str, port_a))(void)0; | |||
| 2566 | conversation = conversation_lookup_no_addr2_or_port2_anc(frame_num, addr_b, port_a, ctype, anchor); | |||
| 2567 | } else { | |||
| 2568 | DPRINT(("trying wildcarded match: %s:%d -> *:*",(void)0 | |||
| 2569 | addr_b_str, port_b))(void)0; | |||
| 2570 | conversation = conversation_lookup_no_addr2_or_port2_anc(frame_num, addr_b, port_b, ctype, anchor); | |||
| 2571 | } | |||
| 2572 | if (conversation != NULL((void*)0)) { | |||
| 2573 | /* | |||
| 2574 | * If this is for a connection-oriented protocol, set the | |||
| 2575 | * second address for this conversation to address A, as | |||
| 2576 | * that's the address that matched the wildcarded second | |||
| 2577 | * address for this conversation, and set the second port | |||
| 2578 | * for this conversation to port A, as that's the port | |||
| 2579 | * that matched the wildcarded second port for this | |||
| 2580 | * conversation. | |||
| 2581 | */ | |||
| 2582 | DPRINT(("match found"))(void)0; | |||
| 2583 | if (ctype != CONVERSATION_UDP) | |||
| 2584 | { | |||
| 2585 | if (!(conversation->options & CONVERSATION_TEMPLATE0x08)) | |||
| 2586 | { | |||
| 2587 | conversation_set_addr2(conversation, addr_a); | |||
| 2588 | conversation_set_port2(conversation, port_a); | |||
| 2589 | } | |||
| 2590 | else | |||
| 2591 | { | |||
| 2592 | conversation = conversation_create_from_template(conversation, addr_a, port_a); | |||
| 2593 | } | |||
| 2594 | } | |||
| 2595 | goto end; | |||
| 2596 | } | |||
| 2597 | } | |||
| 2598 | ||||
| 2599 | if (options & NO_PORT_X0x00040000) { | |||
| 2600 | /* | |||
| 2601 | * Search for conversations between two addresses, strictly | |||
| 2602 | */ | |||
| 2603 | DPRINT(("trying exact match: %s -> %s",(void)0 | |||
| 2604 | addr_a_str, addr_b_str))(void)0; | |||
| 2605 | conversation = conversation_lookup_no_ports_anc(frame_num, addr_a, addr_b, ctype, anchor); | |||
| 2606 | ||||
| 2607 | if (conversation != NULL((void*)0)) { | |||
| 2608 | DPRINT(("match found"))(void)0; | |||
| 2609 | goto end; | |||
| 2610 | } | |||
| 2611 | else { | |||
| 2612 | conversation = conversation_lookup_no_ports_anc(frame_num, addr_b, addr_a, ctype, anchor); | |||
| 2613 | if (conversation != NULL((void*)0)) { | |||
| 2614 | DPRINT(("match found"))(void)0; | |||
| 2615 | goto end; | |||
| 2616 | } | |||
| 2617 | } | |||
| 2618 | } | |||
| 2619 | ||||
| 2620 | DPRINT(("no matches found"))(void)0; | |||
| 2621 | ||||
| 2622 | /* | |||
| 2623 | * We found no conversation. | |||
| 2624 | */ | |||
| 2625 | conversation = NULL((void*)0); | |||
| 2626 | ||||
| 2627 | end: | |||
| 2628 | ||||
| 2629 | DINSTR(wmem_free(NULL, addr_a_str))(void)0; | |||
| 2630 | DINSTR(wmem_free(NULL, addr_b_str))(void)0; | |||
| 2631 | return conversation; | |||
| 2632 | } | |||
| 2633 | ||||
| 2634 | conversation_t * | |||
| 2635 | find_conversation_deinterlacer(const uint32_t frame_num, const address *addr_a, const address *addr_b, | |||
| 2636 | const conversation_type ctype, const uint32_t key_a, const uint32_t key_b, const uint32_t key_c) | |||
| 2637 | { | |||
| 2638 | conversation_t *conversation, *other_conv; | |||
| 2639 | ||||
| 2640 | conversation = conversation_lookup_deinterlacer(frame_num, addr_a, addr_b, ctype, key_a, key_b, key_c); | |||
| 2641 | ||||
| 2642 | other_conv = conversation_lookup_deinterlacer(frame_num, addr_b, addr_a, ctype, key_a, key_b, key_c); | |||
| 2643 | if (other_conv != NULL((void*)0)) { | |||
| 2644 | if (conversation != NULL((void*)0)) { | |||
| 2645 | if(other_conv->conv_index > conversation->conv_index) { | |||
| 2646 | conversation = other_conv; | |||
| 2647 | } | |||
| 2648 | } | |||
| 2649 | else { | |||
| 2650 | conversation = other_conv; | |||
| 2651 | } | |||
| 2652 | } | |||
| 2653 | ||||
| 2654 | return conversation; | |||
| 2655 | } | |||
| 2656 | ||||
| 2657 | conversation_t * | |||
| 2658 | find_conversation_deinterlacer_pinfo(const packet_info *pinfo) | |||
| 2659 | { | |||
| 2660 | conversation_t *conv=NULL((void*)0); | |||
| 2661 | unsigned dr_conv_type; /* deinterlacer conv type */ | |||
| 2662 | uint32_t dtlc_iface = 0; | |||
| 2663 | uint32_t dtlc_vlan = 0; | |||
| 2664 | ||||
| 2665 | /* evaluate the execution context: user pref, interface, VLAN */ | |||
| 2666 | if(prefs.conversation_deinterlacing_key>0) { | |||
| 2667 | if(prefs.conversation_deinterlacing_key&CONV_DEINT_KEY_INTERFACE0x02 && | |||
| 2668 | pinfo->rec->presence_flags & WTAP_HAS_INTERFACE_ID0x00000004) { | |||
| 2669 | ||||
| 2670 | if(prefs.conversation_deinterlacing_key&CONV_DEINT_KEY_VLAN0x08 && | |||
| 2671 | pinfo->vlan_id>0) { | |||
| 2672 | ||||
| 2673 | dr_conv_type = CONVERSATION_ETH_IV; | |||
| 2674 | dtlc_vlan = pinfo->vlan_id; | |||
| 2675 | } | |||
| 2676 | else { | |||
| 2677 | dr_conv_type = CONVERSATION_ETH_IN; | |||
| 2678 | } | |||
| 2679 | dtlc_iface = pinfo->rec->rec_header.packet_header.interface_id; | |||
| 2680 | } | |||
| 2681 | else { | |||
| 2682 | if(prefs.conversation_deinterlacing_key&CONV_DEINT_KEY_VLAN0x08 && | |||
| 2683 | pinfo->vlan_id>0) { | |||
| 2684 | ||||
| 2685 | dr_conv_type = CONVERSATION_ETH_NV; | |||
| 2686 | dtlc_vlan = pinfo->vlan_id; | |||
| 2687 | } | |||
| 2688 | else { | |||
| 2689 | dr_conv_type = CONVERSATION_ETH_NN; | |||
| 2690 | } | |||
| 2691 | } | |||
| 2692 | ||||
| 2693 | conv = find_conversation_deinterlacer(pinfo->num, &pinfo->dl_src, &pinfo->dl_dst, dr_conv_type, dtlc_iface, dtlc_vlan , 0); | |||
| 2694 | } | |||
| 2695 | ||||
| 2696 | return conv; | |||
| 2697 | } | |||
| 2698 | ||||
| 2699 | conversation_t * | |||
| 2700 | find_conversation_by_id(const uint32_t frame, const conversation_type ctype, const uint32_t id) | |||
| 2701 | { | |||
| 2702 | conversation_element_t elements[2] = { | |||
| 2703 | { CE_UINT, .uint_val = id }, | |||
| 2704 | { CE_CONVERSATION_TYPE, .conversation_type_val = ctype } | |||
| 2705 | }; | |||
| 2706 | ||||
| 2707 | return conversation_lookup_hashtable(conversation_hashtable_id, frame, elements); | |||
| 2708 | } | |||
| 2709 | ||||
| 2710 | static gboolean | |||
| 2711 | find_conversation_by_index(void *key _U___attribute__((unused)), void *value, void *user_data) | |||
| 2712 | { | |||
| 2713 | uint32_t convid = GPOINTER_TO_UINT(user_data)((guint) (gulong) (user_data)); | |||
| 2714 | conversation_t *conv = (conversation_t*)value; | |||
| 2715 | if (conv->conv_index == convid) { | |||
| 2716 | return true1; | |||
| 2717 | } | |||
| 2718 | return false0; | |||
| 2719 | } | |||
| 2720 | ||||
| 2721 | conversation_t * | |||
| 2722 | find_conversation_err_pkts(const uint32_t frame, const conversation_type ctype, const uint32_t id, const uint32_t rid) | |||
| 2723 | { | |||
| 2724 | conversation_element_t elements[3] = { | |||
| 2725 | { CE_UINT, .uint_val = id }, | |||
| 2726 | { CE_UINT, .uint_val = rid }, | |||
| 2727 | { CE_CONVERSATION_TYPE, .conversation_type_val = ctype } | |||
| 2728 | }; | |||
| 2729 | ||||
| 2730 | return conversation_lookup_hashtable(conversation_hashtable_err_pkts, frame, elements); | |||
| 2731 | } | |||
| 2732 | ||||
| 2733 | void | |||
| 2734 | conversation_add_proto_data(conversation_t *conv, const int proto, void *proto_data) | |||
| 2735 | { | |||
| 2736 | if (conv == NULL((void*)0)) { | |||
| 2737 | REPORT_DISSECTOR_BUG("%s: Can't add proto data to a NULL conversation.", proto_get_protocol_name(proto))proto_report_dissector_bug("%s: Can't add proto data to a NULL conversation." , proto_get_protocol_name(proto)); | |||
| 2738 | } | |||
| 2739 | /* Add it to the list of items for this conversation. */ | |||
| 2740 | if (conv->data_list == NULL((void*)0)) | |||
| 2741 | conv->data_list = wmem_tree_new(wmem_file_scope()); | |||
| 2742 | ||||
| 2743 | wmem_tree_insert32(conv->data_list, proto, proto_data); | |||
| 2744 | } | |||
| 2745 | ||||
| 2746 | void * | |||
| 2747 | conversation_get_proto_data(const conversation_t *conv, const int proto) | |||
| 2748 | { | |||
| 2749 | if (conv == NULL((void*)0)) { | |||
| 2750 | REPORT_DISSECTOR_BUG("%s: Can't get proto from a NULL conversation.", proto_get_protocol_name(proto))proto_report_dissector_bug("%s: Can't get proto from a NULL conversation." , proto_get_protocol_name(proto)); | |||
| 2751 | } | |||
| 2752 | /* No tree created yet */ | |||
| 2753 | if (conv->data_list == NULL((void*)0)) { | |||
| 2754 | return NULL((void*)0); | |||
| 2755 | } | |||
| 2756 | ||||
| 2757 | return wmem_tree_lookup32(conv->data_list, proto); | |||
| 2758 | } | |||
| 2759 | ||||
| 2760 | void | |||
| 2761 | conversation_delete_proto_data(conversation_t *conv, const int proto) | |||
| 2762 | { | |||
| 2763 | if (conv == NULL((void*)0)) { | |||
| 2764 | REPORT_DISSECTOR_BUG("%s: Can't delete a NULL conversation.", proto_get_protocol_name(proto))proto_report_dissector_bug("%s: Can't delete a NULL conversation." , proto_get_protocol_name(proto)); | |||
| 2765 | } | |||
| 2766 | if (conv->data_list != NULL((void*)0)) | |||
| 2767 | wmem_tree_remove32(conv->data_list, proto); | |||
| 2768 | } | |||
| 2769 | ||||
| 2770 | void | |||
| 2771 | conversation_set_dissector_from_frame_number(conversation_t *conversation, | |||
| 2772 | const uint32_t starting_frame_num, const dissector_handle_t handle) | |||
| 2773 | { | |||
| 2774 | if (!conversation->dissector_tree) { | |||
| 2775 | conversation->dissector_tree = wmem_tree_new(wmem_file_scope()); | |||
| 2776 | } | |||
| 2777 | wmem_tree_insert32(conversation->dissector_tree, starting_frame_num, (void *)handle); | |||
| 2778 | } | |||
| 2779 | ||||
| 2780 | void | |||
| 2781 | conversation_set_dissector(conversation_t *conversation, const dissector_handle_t handle) | |||
| 2782 | { | |||
| 2783 | conversation_set_dissector_from_frame_number(conversation, 0, handle); | |||
| 2784 | } | |||
| 2785 | ||||
| 2786 | dissector_handle_t | |||
| 2787 | conversation_get_dissector(conversation_t *conversation, const uint32_t frame_num) | |||
| 2788 | { | |||
| 2789 | if (!conversation->dissector_tree) { | |||
| 2790 | return NULL((void*)0); | |||
| 2791 | } | |||
| 2792 | return (dissector_handle_t)wmem_tree_lookup32_le(conversation->dissector_tree, frame_num); | |||
| 2793 | } | |||
| 2794 | ||||
| 2795 | static bool_Bool | |||
| 2796 | try_conversation_call_dissector_helper(conversation_t *conversation, bool_Bool* dissector_success, | |||
| 2797 | tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data) | |||
| 2798 | { | |||
| 2799 | if (!conversation->dissector_tree) { | |||
| 2800 | return false0; | |||
| 2801 | } | |||
| 2802 | ||||
| 2803 | int ret; | |||
| 2804 | dissector_handle_t handle = (dissector_handle_t)wmem_tree_lookup32_le( | |||
| 2805 | conversation->dissector_tree, pinfo->num); | |||
| 2806 | if (handle == NULL((void*)0)) { | |||
| 2807 | return false0; | |||
| 2808 | } | |||
| 2809 | ||||
| 2810 | ret = call_dissector_only(handle, tvb, pinfo, tree, data); | |||
| 2811 | ||||
| 2812 | /* Let the caller decide what to do with success or rejection */ | |||
| 2813 | (*dissector_success) = (ret != 0); | |||
| 2814 | ||||
| 2815 | return true1; | |||
| 2816 | } | |||
| 2817 | ||||
| 2818 | /* | |||
| 2819 | * Given two address/port pairs for a packet, search for a matching | |||
| 2820 | * conversation and, if found and it has a conversation dissector, | |||
| 2821 | * call that dissector and return true, otherwise return false. | |||
| 2822 | * | |||
| 2823 | * This helper uses call_dissector_only which will NOT call the default | |||
| 2824 | * "data" dissector if the packet was rejected. | |||
| 2825 | * Our caller is responsible to call the data dissector explicitly in case | |||
| 2826 | * this function returns false. | |||
| 2827 | */ | |||
| 2828 | bool_Bool | |||
| 2829 | try_conversation_dissector(const address *addr_a, const address *addr_b, const conversation_type ctype, | |||
| 2830 | const uint32_t port_a, const uint32_t port_b, tvbuff_t *tvb, packet_info *pinfo, | |||
| 2831 | proto_tree *tree, void* data, const unsigned options) | |||
| 2832 | { | |||
| 2833 | conversation_t *conversation; | |||
| 2834 | bool_Bool dissector_success; | |||
| 2835 | ||||
| 2836 | /* | |||
| 2837 | * Verify that the correct options are used, if any. | |||
| 2838 | */ | |||
| 2839 | DISSECTOR_ASSERT_HINT((options == 0) || (options & NO_MASK_B), "Use NO_ADDR_B and/or NO_PORT_B as option")((void) (((options == 0) || (options & 0xFFFF0000)) ? (void )0 : (proto_report_dissector_bug("%s:%u: failed assertion \"%s\" (%s)" , "epan/conversation.c", 2839, "(options == 0) || (options & 0xFFFF0000)" , "Use NO_ADDR_B and/or NO_PORT_B as option")))); | |||
| 2840 | ||||
| 2841 | /* Try each mode based on option flags */ | |||
| 2842 | conversation = find_conversation(pinfo->num, addr_a, addr_b, ctype, port_a, port_b, 0); | |||
| 2843 | if (conversation != NULL((void*)0)) { | |||
| 2844 | if (try_conversation_call_dissector_helper(conversation, &dissector_success, tvb, pinfo, tree, data)) | |||
| 2845 | return dissector_success; | |||
| 2846 | } | |||
| 2847 | ||||
| 2848 | if (options & NO_ADDR_B0x00010000) { | |||
| 2849 | conversation = find_conversation(pinfo->num, addr_a, addr_b, ctype, port_a, port_b, NO_ADDR_B0x00010000); | |||
| 2850 | if (conversation != NULL((void*)0)) { | |||
| 2851 | if (try_conversation_call_dissector_helper(conversation, &dissector_success, tvb, pinfo, tree, data)) | |||
| 2852 | return dissector_success; | |||
| 2853 | } | |||
| 2854 | } | |||
| 2855 | ||||
| 2856 | if (options & NO_PORT_B0x00020000) { | |||
| 2857 | conversation = find_conversation(pinfo->num, addr_a, addr_b, ctype, port_a, port_b, NO_PORT_B0x00020000); | |||
| 2858 | if (conversation != NULL((void*)0)) { | |||
| 2859 | if (try_conversation_call_dissector_helper(conversation, &dissector_success, tvb, pinfo, tree, data)) | |||
| 2860 | return dissector_success; | |||
| 2861 | } | |||
| 2862 | } | |||
| 2863 | ||||
| 2864 | if (options & (NO_ADDR_B0x00010000|NO_PORT_B0x00020000)) { | |||
| 2865 | conversation = find_conversation(pinfo->num, addr_a, addr_b, ctype, port_a, port_b, NO_ADDR_B0x00010000|NO_PORT_B0x00020000); | |||
| 2866 | if (conversation != NULL((void*)0)) { | |||
| 2867 | if (try_conversation_call_dissector_helper(conversation, &dissector_success, tvb, pinfo, tree, data)) | |||
| 2868 | return dissector_success; | |||
| 2869 | } | |||
| 2870 | } | |||
| 2871 | ||||
| 2872 | return false0; | |||
| 2873 | } | |||
| 2874 | ||||
| 2875 | /* | |||
| 2876 | * Similar to try_conversation_dissector() with the particularity of calling | |||
| 2877 | * find_conversation_strat() in place of find_conversation() everywhere. | |||
| 2878 | */ | |||
| 2879 | bool_Bool | |||
| 2880 | try_conversation_dissector_strat(packet_info *pinfo, const conversation_type ctype, | |||
| 2881 | tvbuff_t *tvb, proto_tree *tree, void* data, const unsigned options) | |||
| 2882 | { | |||
| 2883 | conversation_t *conversation; | |||
| 2884 | bool_Bool dissector_success; | |||
| 2885 | ||||
| 2886 | /* | |||
| 2887 | * Verify that the correct options are used, if any. | |||
| 2888 | */ | |||
| 2889 | DISSECTOR_ASSERT_HINT((options == 0) || (options & NO_MASK_B), "Use NO_ADDR_B and/or NO_PORT_B as option")((void) (((options == 0) || (options & 0xFFFF0000)) ? (void )0 : (proto_report_dissector_bug("%s:%u: failed assertion \"%s\" (%s)" , "epan/conversation.c", 2889, "(options == 0) || (options & 0xFFFF0000)" , "Use NO_ADDR_B and/or NO_PORT_B as option")))); | |||
| 2890 | ||||
| 2891 | /* Try each mode based on option flags */ | |||
| 2892 | conversation = find_conversation_strat(pinfo, ctype, 0, false0); | |||
| 2893 | if (conversation != NULL((void*)0)) { | |||
| 2894 | if (try_conversation_call_dissector_helper(conversation, &dissector_success, tvb, pinfo, tree, data)) | |||
| 2895 | return dissector_success; | |||
| 2896 | } | |||
| 2897 | ||||
| 2898 | if (options & NO_ADDR_B0x00010000) { | |||
| 2899 | conversation = find_conversation_strat(pinfo, ctype, NO_ADDR_B0x00010000, false0); | |||
| 2900 | if (conversation != NULL((void*)0)) { | |||
| 2901 | if (try_conversation_call_dissector_helper(conversation, &dissector_success, tvb, pinfo, tree, data)) | |||
| 2902 | return dissector_success; | |||
| 2903 | } | |||
| 2904 | } | |||
| 2905 | ||||
| 2906 | if (options & NO_PORT_B0x00020000) { | |||
| 2907 | conversation = find_conversation_strat(pinfo, ctype, NO_PORT_B0x00020000, false0); | |||
| 2908 | if (conversation != NULL((void*)0)) { | |||
| 2909 | if (try_conversation_call_dissector_helper(conversation, &dissector_success, tvb, pinfo, tree, data)) { | |||
| 2910 | return dissector_success; | |||
| 2911 | } | |||
| 2912 | } | |||
| 2913 | ||||
| 2914 | } | |||
| 2915 | ||||
| 2916 | if (options & (NO_ADDR_B0x00010000|NO_PORT_B0x00020000)) { | |||
| 2917 | conversation = find_conversation_strat(pinfo, ctype, NO_ADDR_B0x00010000|NO_PORT_B0x00020000, false0); | |||
| 2918 | if (conversation != NULL((void*)0)) { | |||
| 2919 | if (try_conversation_call_dissector_helper(conversation, &dissector_success, tvb, pinfo, tree, data)) { | |||
| 2920 | return dissector_success; | |||
| 2921 | } | |||
| 2922 | } | |||
| 2923 | } | |||
| 2924 | ||||
| 2925 | return false0; | |||
| 2926 | } | |||
| 2927 | ||||
| 2928 | bool_Bool | |||
| 2929 | try_conversation_dissector_by_id(const conversation_type ctype, const uint32_t id, tvbuff_t *tvb, | |||
| 2930 | packet_info *pinfo, proto_tree *tree, void* data) | |||
| 2931 | { | |||
| 2932 | conversation_t *conversation; | |||
| 2933 | ||||
| 2934 | conversation = find_conversation_by_id(pinfo->num, ctype, id); | |||
| 2935 | ||||
| 2936 | if (conversation != NULL((void*)0)) { | |||
| 2937 | if (!conversation->dissector_tree) { | |||
| 2938 | return false0; | |||
| 2939 | } | |||
| 2940 | ||||
| 2941 | int ret; | |||
| 2942 | dissector_handle_t handle = (dissector_handle_t)wmem_tree_lookup32_le(conversation->dissector_tree, pinfo->num); | |||
| 2943 | ||||
| 2944 | if (handle == NULL((void*)0)) { | |||
| 2945 | return false0; | |||
| 2946 | } | |||
| 2947 | ||||
| 2948 | ret = call_dissector_only(handle, tvb, pinfo, tree, data); | |||
| 2949 | if (!ret) { | |||
| 2950 | /* this packet was rejected by the dissector | |||
| 2951 | * so return false in case our caller wants | |||
| 2952 | * to do some cleaning up. | |||
| 2953 | */ | |||
| 2954 | return false0; | |||
| 2955 | } | |||
| 2956 | return true1; | |||
| 2957 | } | |||
| 2958 | return false0; | |||
| 2959 | } | |||
| 2960 | ||||
| 2961 | /* Identifies a conversation ("classic" or deinterlaced) */ | |||
| 2962 | conversation_t * | |||
| 2963 | find_conversation_strat(const packet_info *pinfo, const conversation_type ctype, const unsigned options, const bool_Bool direction) | |||
| 2964 | { | |||
| 2965 | conversation_t *conv=NULL((void*)0); | |||
| 2966 | /* deinterlacing is only supported for the Ethernet wtap for now */ | |||
| 2967 | if( (pinfo->pseudo_header != NULL((void*)0)) | |||
| 2968 | && (pinfo->rec->rec_header.packet_header.pkt_encap == WTAP_ENCAP_ETHERNET1) | |||
| 2969 | && (prefs.conversation_deinterlacing_key>0)) { | |||
| 2970 | conversation_t *underlying_conv = find_conversation_deinterlacer_pinfo(pinfo); | |||
| 2971 | if(underlying_conv) { | |||
| 2972 | if(direction) { // reverse flow (dst to src) | |||
| 2973 | conv = find_conversation_deinterlaced(pinfo->num, &pinfo->dst, &pinfo->src, ctype, pinfo->destport, pinfo->srcport, underlying_conv->conv_index, options); | |||
| 2974 | } | |||
| 2975 | else { | |||
| 2976 | conv = find_conversation_deinterlaced(pinfo->num, &pinfo->src, &pinfo->dst, ctype, pinfo->srcport, pinfo->destport, underlying_conv->conv_index, options); | |||
| 2977 | } | |||
| 2978 | } | |||
| 2979 | } | |||
| 2980 | else { | |||
| 2981 | if(direction) { // reverse flow (dst to src) | |||
| 2982 | conv = find_conversation(pinfo->num, &pinfo->dst, &pinfo->src, ctype, pinfo->destport, pinfo->srcport, options); | |||
| 2983 | } | |||
| 2984 | else { // default (src to dst) | |||
| 2985 | conv = find_conversation(pinfo->num, &pinfo->src, &pinfo->dst, ctype, pinfo->srcport, pinfo->destport, options); | |||
| 2986 | } | |||
| 2987 | } | |||
| 2988 | return conv; | |||
| 2989 | } | |||
| 2990 | ||||
| 2991 | /* Identifies a conversation ("classic" or deinterlaced) */ | |||
| 2992 | conversation_t * | |||
| 2993 | find_conversation_strat_xtd(const packet_info *pinfo, const uint32_t frame_num, const address *addr_a, const address *addr_b, | |||
| 2994 | const conversation_type ctype, const uint32_t port_a, const uint32_t port_b, const unsigned options) | |||
| 2995 | { | |||
| 2996 | conversation_t *conv=NULL((void*)0); | |||
| 2997 | /* deinterlacing is only supported for the Ethernet wtap for now */ | |||
| 2998 | if( (pinfo->pseudo_header != NULL((void*)0)) | |||
| 2999 | && (pinfo->rec->rec_header.packet_header.pkt_encap == WTAP_ENCAP_ETHERNET1) | |||
| 3000 | && (prefs.conversation_deinterlacing_key>0)) { | |||
| 3001 | conversation_t *underlying_conv = find_conversation_deinterlacer_pinfo(pinfo); | |||
| 3002 | if(underlying_conv) { | |||
| 3003 | conv = find_conversation_deinterlaced(frame_num, addr_a, addr_b, ctype, port_a, port_b, underlying_conv->conv_index, options); | |||
| 3004 | } | |||
| 3005 | } | |||
| 3006 | else { | |||
| 3007 | conv = find_conversation(frame_num, addr_a, addr_b, ctype, port_a, port_b, options); | |||
| 3008 | } | |||
| 3009 | return conv; | |||
| 3010 | } | |||
| 3011 | ||||
| 3012 | /** A helper function that calls find_conversation() using data from pinfo | |||
| 3013 | * The frame number and addresses are taken from pinfo. | |||
| 3014 | */ | |||
| 3015 | conversation_t * | |||
| 3016 | find_conversation_pinfo(const packet_info *pinfo, const unsigned options) | |||
| 3017 | { | |||
| 3018 | conversation_t *conv = NULL((void*)0); | |||
| 3019 | ||||
| 3020 | DINSTR(char *src_str = address_to_str(NULL, &pinfo->src))(void)0; | |||
| 3021 | DINSTR(char *dst_str = address_to_str(NULL, &pinfo->dst))(void)0; | |||
| 3022 | DPRINT(("called for frame #%u: %s:%d -> %s:%d (ptype=%d)",(void)0 | |||
| 3023 | pinfo->num, src_str, pinfo->srcport,(void)0 | |||
| 3024 | dst_str, pinfo->destport, pinfo->ptype))(void)0; | |||
| 3025 | DINDENT()(void)0; | |||
| 3026 | DINSTR(wmem_free(NULL, src_str))(void)0; | |||
| 3027 | DINSTR(wmem_free(NULL, dst_str))(void)0; | |||
| 3028 | ||||
| 3029 | /* Have we seen this conversation before? */ | |||
| 3030 | if (pinfo->use_conv_addr_port_endpoints) { | |||
| 3031 | DISSECTOR_ASSERT(pinfo->conv_addr_port_endpoints)((void) ((pinfo->conv_addr_port_endpoints) ? (void)0 : (proto_report_dissector_bug ("%s:%u: failed assertion \"%s\"", "epan/conversation.c", 3031 , "pinfo->conv_addr_port_endpoints")))); | |||
| 3032 | if ((conv = find_conversation(pinfo->num, &pinfo->conv_addr_port_endpoints->addr1, &pinfo->conv_addr_port_endpoints->addr2, | |||
| 3033 | pinfo->conv_addr_port_endpoints->ctype, pinfo->conv_addr_port_endpoints->port1, | |||
| 3034 | pinfo->conv_addr_port_endpoints->port2, 0)) != NULL((void*)0)) { | |||
| 3035 | DPRINT(("found previous conversation for frame #%u (last_frame=%d)",(void)0 | |||
| 3036 | pinfo->num, conv->last_frame))(void)0; | |||
| 3037 | if (pinfo->num > conv->last_frame) { | |||
| 3038 | conv->last_frame = pinfo->num; | |||
| 3039 | } | |||
| 3040 | } | |||
| 3041 | } else if (pinfo->conv_elements) { | |||
| 3042 | if ((conv = find_conversation_full(pinfo->num, pinfo->conv_elements)) != NULL((void*)0)) { | |||
| 3043 | DPRINT(("found previous conversation elements for frame #%u (last_frame=%d)",(void)0 | |||
| 3044 | pinfo->num, conv->last_frame))(void)0; | |||
| 3045 | if (pinfo->num > conv->last_frame) { | |||
| 3046 | conv->last_frame = pinfo->num; | |||
| 3047 | } | |||
| 3048 | } | |||
| 3049 | } else { | |||
| 3050 | if ((conv = find_conversation(pinfo->num, &pinfo->src, &pinfo->dst, | |||
| 3051 | conversation_pt_to_conversation_type(pinfo->ptype), pinfo->srcport, | |||
| 3052 | pinfo->destport, options)) != NULL((void*)0)) { | |||
| 3053 | DPRINT(("found previous conversation for frame #%u (last_frame=%d)",(void)0 | |||
| 3054 | pinfo->num, conv->last_frame))(void)0; | |||
| 3055 | if (pinfo->num > conv->last_frame) { | |||
| 3056 | conv->last_frame = pinfo->num; | |||
| 3057 | } | |||
| 3058 | } | |||
| 3059 | } | |||
| 3060 | ||||
| 3061 | DENDENT()(void)0; | |||
| 3062 | ||||
| 3063 | return conv; | |||
| 3064 | } | |||
| 3065 | ||||
| 3066 | conversation_t * | |||
| 3067 | find_conversation_pinfo_deinterlaced(const packet_info *pinfo, const uint32_t anchor, const unsigned options) | |||
| 3068 | { | |||
| 3069 | conversation_t *conv = NULL((void*)0); | |||
| 3070 | ||||
| 3071 | DINSTR(char *src_str = address_to_str(NULL, &pinfo->src))(void)0; | |||
| 3072 | DINSTR(char *dst_str = address_to_str(NULL, &pinfo->dst))(void)0; | |||
| 3073 | DPRINT(("called for frame #%u: %s:%d -> %s:%d (ptype=%d)",(void)0 | |||
| 3074 | pinfo->num, src_str, pinfo->srcport,(void)0 | |||
| 3075 | dst_str, pinfo->destport, pinfo->ptype))(void)0; | |||
| 3076 | DINDENT()(void)0; | |||
| 3077 | DINSTR(wmem_free(NULL, src_str))(void)0; | |||
| 3078 | DINSTR(wmem_free(NULL, dst_str))(void)0; | |||
| 3079 | ||||
| 3080 | /* Have we seen this conversation before? */ | |||
| 3081 | if (pinfo->use_conv_addr_port_endpoints) { | |||
| 3082 | // XXX - not implemented yet. Necessary ? | |||
| 3083 | } else if (pinfo->conv_elements) { | |||
| 3084 | // XXX - not implemented yet. Necessary ? | |||
| 3085 | } else { | |||
| 3086 | if ((conv = find_conversation_deinterlaced(pinfo->num, &pinfo->src, &pinfo->dst, | |||
| 3087 | conversation_pt_to_conversation_type(pinfo->ptype), pinfo->srcport, | |||
| 3088 | pinfo->destport, anchor, options)) != NULL((void*)0)) { | |||
| 3089 | DPRINT(("found previous conversation for frame #%u (last_frame=%d)",(void)0 | |||
| 3090 | pinfo->num, conv->last_frame))(void)0; | |||
| 3091 | if (pinfo->num > conv->last_frame) { | |||
| 3092 | conv->last_frame = pinfo->num; | |||
| 3093 | } | |||
| 3094 | } | |||
| 3095 | } | |||
| 3096 | ||||
| 3097 | DENDENT()(void)0; | |||
| 3098 | ||||
| 3099 | return conv; | |||
| 3100 | } | |||
| 3101 | ||||
| 3102 | conversation_t * | |||
| 3103 | find_conversation_pinfo_strat(const packet_info *pinfo, const unsigned options) | |||
| 3104 | { | |||
| 3105 | conversation_t *conv=NULL((void*)0); | |||
| 3106 | ||||
| 3107 | /* deinterlacing is only supported for the Ethernet wtap for now */ | |||
| 3108 | // XXX - a Boolean returning function could be appropriate for this test | |||
| 3109 | if( (pinfo->pseudo_header != NULL((void*)0)) | |||
| 3110 | && (pinfo->rec->rec_header.packet_header.pkt_encap == WTAP_ENCAP_ETHERNET1) | |||
| 3111 | && (prefs.conversation_deinterlacing_key>0)) { | |||
| 3112 | ||||
| 3113 | conversation_t *underlying_conv = find_conversation_deinterlacer_pinfo(pinfo); | |||
| 3114 | ||||
| 3115 | if(underlying_conv) { | |||
| 3116 | conv = find_conversation_pinfo_deinterlaced(pinfo, underlying_conv->conv_index, options); | |||
| 3117 | } | |||
| 3118 | } | |||
| 3119 | else { | |||
| 3120 | conv = find_conversation_pinfo(pinfo, options); | |||
| 3121 | } | |||
| 3122 | ||||
| 3123 | return conv; | |||
| 3124 | } | |||
| 3125 | ||||
| 3126 | /** A helper function that calls find_conversation() using data from pinfo, | |||
| 3127 | * as above, but somewhat simplified for being accessed from packet_list. | |||
| 3128 | * The frame number and addresses are taken from pinfo. | |||
| 3129 | */ | |||
| 3130 | conversation_t * | |||
| 3131 | find_conversation_pinfo_ro(const packet_info *pinfo, const unsigned options) | |||
| 3132 | { | |||
| 3133 | conversation_t *conv = NULL((void*)0); | |||
| 3134 | ||||
| 3135 | DINSTR(char *src_str = address_to_str(NULL, &pinfo->src))(void)0; | |||
| 3136 | DINSTR(char *dst_str = address_to_str(NULL, &pinfo->dst))(void)0; | |||
| 3137 | DPRINT(("called for frame #%u: %s:%d -> %s:%d (ptype=%d)",(void)0 | |||
| 3138 | pinfo->num, src_str, pinfo->srcport,(void)0 | |||
| 3139 | dst_str, pinfo->destport, pinfo->ptype))(void)0; | |||
| 3140 | DINDENT()(void)0; | |||
| 3141 | DINSTR(wmem_free(NULL, src_str))(void)0; | |||
| 3142 | DINSTR(wmem_free(NULL, dst_str))(void)0; | |||
| 3143 | ||||
| 3144 | /* Have we seen this conversation before? */ | |||
| 3145 | if (pinfo->use_conv_addr_port_endpoints) { | |||
| 3146 | DISSECTOR_ASSERT(pinfo->conv_addr_port_endpoints)((void) ((pinfo->conv_addr_port_endpoints) ? (void)0 : (proto_report_dissector_bug ("%s:%u: failed assertion \"%s\"", "epan/conversation.c", 3146 , "pinfo->conv_addr_port_endpoints")))); | |||
| 3147 | if ((conv = find_conversation(pinfo->num, &pinfo->conv_addr_port_endpoints->addr1, &pinfo->conv_addr_port_endpoints->addr2, | |||
| 3148 | pinfo->conv_addr_port_endpoints->ctype, pinfo->conv_addr_port_endpoints->port1, | |||
| 3149 | pinfo->conv_addr_port_endpoints->port2, 0)) != NULL((void*)0)) { | |||
| 3150 | DPRINT(("found previous conversation for frame #%u (last_frame=%d)",(void)0 | |||
| 3151 | pinfo->num, conv->last_frame))(void)0; | |||
| 3152 | } | |||
| 3153 | } else if (pinfo->conv_elements) { | |||
| 3154 | if ((conv = find_conversation_full(pinfo->num, pinfo->conv_elements)) != NULL((void*)0)) { | |||
| 3155 | DPRINT(("found previous conversation elements for frame #%u (last_frame=%d)",(void)0 | |||
| 3156 | pinfo->num, conv->last_frame))(void)0; | |||
| 3157 | } | |||
| 3158 | } else if ((conv = find_conversation_strat(pinfo, conversation_pt_to_conversation_type(pinfo->ptype), options, false0)) != NULL((void*)0)) { | |||
| 3159 | DPRINT(("found previous conversation for frame #%u (last_frame=%d)",(void)0 | |||
| 3160 | pinfo->num, conv->last_frame))(void)0; | |||
| 3161 | } | |||
| 3162 | /* If none of the above found any ordinary conversation, | |||
| 3163 | * we might be dealing with an error packet referencing/carrying a known conversation. | |||
| 3164 | * ICMP Type 3/11 are good examples, give them a chance to be identified. | |||
| 3165 | * Note, any Transport protocol might be updated to allow this mechanism to work. | |||
| 3166 | */ | |||
| 3167 | else if( (pinfo->track_ctype>0) ) { | |||
| 3168 | ||||
| 3169 | /* reference id */ | |||
| 3170 | uint32_t conv_index = 0; | |||
| 3171 | ||||
| 3172 | /* Parse all keys and find the one matching id and ctype, | |||
| 3173 | * the reference id is what we are looking for. | |||
| 3174 | */ | |||
| 3175 | wmem_list_t *err_pkts_keys = wmem_map_get_keys(NULL((void*)0), conversation_hashtable_err_pkts); | |||
| 3176 | for (wmem_list_frame_t *cur_frame = wmem_list_head(err_pkts_keys ); cur_frame; cur_frame = wmem_list_frame_next(cur_frame)) { | |||
| 3177 | conversation_element_t *cet = (conversation_element_t *)wmem_list_frame_data(cur_frame); | |||
| 3178 | if(cet) { | |||
| 3179 | if( (cet[2].conversation_type_val == pinfo->track_ctype) && (cet[0].uint_val == pinfo->stream_id) ) { | |||
| 3180 | conv_index = cet[1].uint_val; | |||
| 3181 | break; | |||
| 3182 | } | |||
| 3183 | } | |||
| 3184 | } | |||
| 3185 | wmem_destroy_list(err_pkts_keys); | |||
| 3186 | ||||
| 3187 | /* Now, bring the transport conversation as we know its conv_index. | |||
| 3188 | * Note: the way conversations are added (starting from lower layers), | |||
| 3189 | * it's currently not possible to see a transport conversation | |||
| 3190 | * with conv_index with value 0. | |||
| 3191 | * XXX - Check if that is also true for PDU. | |||
| 3192 | */ | |||
| 3193 | if(conv_index>0) { | |||
| 3194 | conversation_t *tsconv = NULL((void*)0); | |||
| 3195 | ||||
| 3196 | /* If a deinterlacing key was requested, search for the conversation | |||
| 3197 | * in the deinterlaced version of the "addr_port" table. | |||
| 3198 | * XXX - as this check is becoming redundant, isolate it in a function ? | |||
| 3199 | */ | |||
| 3200 | if( (pinfo->pseudo_header != NULL((void*)0)) | |||
| 3201 | && (pinfo->rec->rec_header.packet_header.pkt_encap == WTAP_ENCAP_ETHERNET1) | |||
| 3202 | && (prefs.conversation_deinterlacing_key>0)) { | |||
| 3203 | tsconv = wmem_map_find(conversation_hashtable_exact_addr_port_anc, find_conversation_by_index, GUINT_TO_POINTER(conv_index)((gpointer) (gulong) (conv_index))); | |||
| 3204 | } | |||
| 3205 | else { | |||
| 3206 | tsconv = wmem_map_find(conversation_hashtable_exact_addr_port, find_conversation_by_index, GUINT_TO_POINTER(conv_index)((gpointer) (gulong) (conv_index))); | |||
| 3207 | } | |||
| 3208 | if(tsconv) { | |||
| 3209 | conv = tsconv; | |||
| 3210 | } | |||
| 3211 | } | |||
| 3212 | } | |||
| 3213 | /* else: something is either not implemented or not handled */ | |||
| 3214 | ||||
| 3215 | DENDENT()(void)0; | |||
| 3216 | ||||
| 3217 | return conv; | |||
| 3218 | } | |||
| 3219 | ||||
| 3220 | /* A helper function that calls find_conversation() and, if a conversation is | |||
| 3221 | * not found, calls conversation_new(). | |||
| 3222 | * The frame number and addresses are taken from pinfo. | |||
| 3223 | * No options are used, though we could extend this API to include an options | |||
| 3224 | * parameter. | |||
| 3225 | */ | |||
| 3226 | conversation_t * | |||
| 3227 | find_or_create_conversation(const packet_info *pinfo) | |||
| 3228 | { | |||
| 3229 | conversation_t *conv=NULL((void*)0); | |||
| 3230 | ||||
| 3231 | /* Have we seen this conversation before? */ | |||
| 3232 | if ((conv = find_conversation_pinfo(pinfo, 0)) == NULL((void*)0)) { | |||
| 3233 | /* No, this is a new conversation. */ | |||
| 3234 | DPRINT(("did not find previous conversation for frame #%u",(void)0 | |||
| 3235 | pinfo->num))(void)0; | |||
| 3236 | DINDENT()(void)0; | |||
| 3237 | if (pinfo->use_conv_addr_port_endpoints) { | |||
| 3238 | conv = conversation_new(pinfo->num, &pinfo->conv_addr_port_endpoints->addr1, &pinfo->conv_addr_port_endpoints->addr2, | |||
| 3239 | pinfo->conv_addr_port_endpoints->ctype, pinfo->conv_addr_port_endpoints->port1, | |||
| 3240 | pinfo->conv_addr_port_endpoints->port2, 0); | |||
| 3241 | } else if (pinfo->conv_elements) { | |||
| 3242 | conv = conversation_new_full(pinfo->num, pinfo->conv_elements); | |||
| 3243 | } else { | |||
| 3244 | conv = conversation_new(pinfo->num, &pinfo->src, | |||
| 3245 | &pinfo->dst, conversation_pt_to_conversation_type(pinfo->ptype), | |||
| 3246 | pinfo->srcport, pinfo->destport, 0); | |||
| 3247 | } | |||
| 3248 | DENDENT()(void)0; | |||
| 3249 | } | |||
| 3250 | ||||
| 3251 | return conv; | |||
| 3252 | } | |||
| 3253 | ||||
| 3254 | conversation_t * | |||
| 3255 | find_or_create_conversation_deinterlaced(const packet_info *pinfo, const uint32_t conv_index) | |||
| 3256 | { | |||
| 3257 | conversation_t *conv=NULL((void*)0); | |||
| 3258 | ||||
| 3259 | /* Have we seen this conversation before? */ | |||
| 3260 | if ((conv = find_conversation_pinfo_deinterlaced(pinfo, conv_index, 0)) == NULL((void*)0)) { | |||
| 3261 | /* No, this is a new conversation. */ | |||
| 3262 | DPRINT(("did not find previous conversation for frame #%u",(void)0 | |||
| 3263 | pinfo->num))(void)0; | |||
| 3264 | DINDENT()(void)0; | |||
| 3265 | if (pinfo->use_conv_addr_port_endpoints) { | |||
| 3266 | conv = conversation_new_strat(pinfo, pinfo->conv_addr_port_endpoints->ctype, 0); | |||
| 3267 | } else if (pinfo->conv_elements) { | |||
| 3268 | conv = conversation_new_full(pinfo->num, pinfo->conv_elements); | |||
| 3269 | } else { | |||
| 3270 | conv = conversation_new_deinterlaced(pinfo->num, &pinfo->src, &pinfo->dst, | |||
| 3271 | conversation_pt_to_conversation_type(pinfo->ptype), | |||
| 3272 | pinfo->srcport, pinfo->destport, conv_index, 0); | |||
| 3273 | } | |||
| 3274 | DENDENT()(void)0; | |||
| 3275 | } | |||
| 3276 | ||||
| 3277 | return conv; | |||
| 3278 | } | |||
| 3279 | ||||
| 3280 | conversation_t * | |||
| 3281 | find_or_create_conversation_strat(const packet_info *pinfo) | |||
| 3282 | { | |||
| 3283 | conversation_t *conv=NULL((void*)0); | |||
| ||||
| 3284 | ||||
| 3285 | /* deinterlacing is only supported for the Ethernet wtap for now */ | |||
| 3286 | // XXX - a Boolean returning function could be appropriate for this test | |||
| 3287 | if( (pinfo->pseudo_header != NULL((void*)0)) | |||
| 3288 | && (pinfo->rec->rec_header.packet_header.pkt_encap == WTAP_ENCAP_ETHERNET1) | |||
| 3289 | && (prefs.conversation_deinterlacing_key>0)) { | |||
| 3290 | ||||
| 3291 | conversation_t *underlying_conv = find_conversation_deinterlacer_pinfo(pinfo); | |||
| 3292 | if(underlying_conv) { | |||
| 3293 | conv = find_or_create_conversation_deinterlaced(pinfo, underlying_conv->conv_index); | |||
| 3294 | } | |||
| 3295 | } | |||
| 3296 | else { | |||
| 3297 | conv = find_or_create_conversation(pinfo); | |||
| 3298 | } | |||
| 3299 | ||||
| 3300 | return conv; | |||
| ||||
| 3301 | } | |||
| 3302 | ||||
| 3303 | conversation_t * | |||
| 3304 | find_or_create_conversation_by_id(packet_info *pinfo, const conversation_type ctype, const uint32_t id) | |||
| 3305 | { | |||
| 3306 | conversation_t *conv=NULL((void*)0); | |||
| 3307 | ||||
| 3308 | /* Have we seen this conversation before? */ | |||
| 3309 | if ((conv = find_conversation_by_id(pinfo->num, ctype, id)) == NULL((void*)0)) { | |||
| 3310 | /* No, this is a new conversation. */ | |||
| 3311 | DPRINT(("did not find previous conversation for frame #%u",(void)0 | |||
| 3312 | pinfo->num))(void)0; | |||
| 3313 | DINDENT()(void)0; | |||
| 3314 | conv = conversation_new_by_id(pinfo->num, ctype, id); | |||
| 3315 | DENDENT()(void)0; | |||
| 3316 | } | |||
| 3317 | ||||
| 3318 | return conv; | |||
| 3319 | } | |||
| 3320 | ||||
| 3321 | void | |||
| 3322 | conversation_set_conv_addr_port_endpoints(struct _packet_info *pinfo, address* addr1, address* addr2, | |||
| 3323 | conversation_type ctype, uint32_t port1, uint32_t port2) | |||
| 3324 | { | |||
| 3325 | pinfo->conv_addr_port_endpoints = wmem_new0(pinfo->pool, struct conversation_addr_port_endpoints)((struct conversation_addr_port_endpoints*)wmem_alloc0((pinfo ->pool), sizeof(struct conversation_addr_port_endpoints))); | |||
| 3326 | ||||
| 3327 | if (addr1 != NULL((void*)0)) { | |||
| 3328 | copy_address_wmem(pinfo->pool, &pinfo->conv_addr_port_endpoints->addr1, addr1); | |||
| 3329 | } | |||
| 3330 | if (addr2 != NULL((void*)0)) { | |||
| 3331 | copy_address_wmem(pinfo->pool, &pinfo->conv_addr_port_endpoints->addr2, addr2); | |||
| 3332 | } | |||
| 3333 | ||||
| 3334 | pinfo->conv_addr_port_endpoints->ctype = ctype; | |||
| 3335 | pinfo->conv_addr_port_endpoints->port1 = port1; | |||
| 3336 | pinfo->conv_addr_port_endpoints->port2 = port2; | |||
| 3337 | ||||
| 3338 | pinfo->use_conv_addr_port_endpoints = true1; | |||
| 3339 | } | |||
| 3340 | ||||
| 3341 | void | |||
| 3342 | conversation_set_elements_by_id(struct _packet_info *pinfo, conversation_type ctype, uint32_t id) | |||
| 3343 | { | |||
| 3344 | pinfo->conv_elements = wmem_alloc0(pinfo->pool, sizeof(conversation_element_t) * 2); | |||
| 3345 | pinfo->conv_elements[0].type = CE_UINT; | |||
| 3346 | pinfo->conv_elements[0].uint_val = id; | |||
| 3347 | pinfo->conv_elements[1].type = CE_CONVERSATION_TYPE; | |||
| 3348 | pinfo->conv_elements[1].conversation_type_val = ctype; | |||
| 3349 | } | |||
| 3350 | ||||
| 3351 | uint32_t | |||
| 3352 | conversation_get_id_from_elements(struct _packet_info *pinfo, conversation_type ctype, const unsigned options) | |||
| 3353 | { | |||
| 3354 | if (pinfo->conv_elements == NULL((void*)0)) { | |||
| 3355 | return 0; | |||
| 3356 | } | |||
| 3357 | ||||
| 3358 | if (pinfo->conv_elements[0].type != CE_UINT || pinfo->conv_elements[1].type != CE_CONVERSATION_TYPE) { | |||
| 3359 | return 0; | |||
| 3360 | } | |||
| 3361 | ||||
| 3362 | if ((pinfo->conv_elements[1].conversation_type_val != ctype) && ((options & USE_LAST_ENDPOINT0x08) != USE_LAST_ENDPOINT0x08)) { | |||
| 3363 | return 0; | |||
| 3364 | } | |||
| 3365 | ||||
| 3366 | return pinfo->conv_elements[0].uint_val; | |||
| 3367 | } | |||
| 3368 | ||||
| 3369 | wmem_map_t * | |||
| 3370 | get_conversation_hashtables(void) | |||
| 3371 | { | |||
| 3372 | return conversation_hashtable_element_list; | |||
| 3373 | } | |||
| 3374 | ||||
| 3375 | const address* | |||
| 3376 | conversation_key_addr1(const conversation_element_t *key) | |||
| 3377 | { | |||
| 3378 | const address *addr = &null_address_; | |||
| 3379 | if (key[ADDR1_IDX].type == CE_ADDRESS) { | |||
| 3380 | addr = &key[ADDR1_IDX].addr_val; | |||
| 3381 | } | |||
| 3382 | return addr; | |||
| 3383 | } | |||
| 3384 | ||||
| 3385 | uint32_t | |||
| 3386 | conversation_key_port1(const conversation_element_t * key) | |||
| 3387 | { | |||
| 3388 | uint32_t port = 0; | |||
| 3389 | if (key[ADDR1_IDX].type == CE_ADDRESS && key[PORT1_IDX].type == CE_PORT) { | |||
| 3390 | port = key[PORT1_IDX].port_val; | |||
| 3391 | } | |||
| 3392 | return port; | |||
| 3393 | } | |||
| 3394 | ||||
| 3395 | const address* | |||
| 3396 | conversation_key_addr2(const conversation_element_t * key) | |||
| 3397 | { | |||
| 3398 | const address *addr = &null_address_; | |||
| 3399 | if (key[ADDR1_IDX].type == CE_ADDRESS && key[PORT1_IDX].type == CE_PORT && key[ADDR2_IDX].type == CE_ADDRESS) { | |||
| 3400 | addr = &key[ADDR2_IDX].addr_val; | |||
| 3401 | } | |||
| 3402 | return addr; | |||
| 3403 | } | |||
| 3404 | ||||
| 3405 | uint32_t | |||
| 3406 | conversation_key_port2(const conversation_element_t * key) | |||
| 3407 | { | |||
| 3408 | uint32_t port = 0; | |||
| 3409 | if (key[ADDR1_IDX].type == CE_ADDRESS && key[PORT1_IDX].type == CE_PORT) { | |||
| 3410 | if (key[ADDR2_IDX].type == CE_ADDRESS && key[PORT2_IDX].type == CE_PORT) { | |||
| 3411 | // Exact | |||
| 3412 | port = key[PORT2_IDX].port_val; | |||
| 3413 | } else if (key[PORT2_NO_ADDR2_IDX].type == CE_PORT) { | |||
| 3414 | // No addr 2 | |||
| 3415 | port = key[PORT2_NO_ADDR2_IDX].port_val; | |||
| 3416 | } | |||
| 3417 | } | |||
| 3418 | return port; | |||
| 3419 | } | |||
| 3420 | ||||
| 3421 | WS_DLL_PUBLIC__attribute__ ((visibility ("default"))) extern | |||
| 3422 | conversation_type conversation_pt_to_conversation_type(port_type pt) | |||
| 3423 | { | |||
| 3424 | switch (pt) | |||
| 3425 | { | |||
| 3426 | case PT_NONE: | |||
| 3427 | return CONVERSATION_NONE; | |||
| 3428 | case PT_SCTP: | |||
| 3429 | return CONVERSATION_SCTP; | |||
| 3430 | case PT_TCP: | |||
| 3431 | return CONVERSATION_TCP; | |||
| 3432 | case PT_UDP: | |||
| 3433 | return CONVERSATION_UDP; | |||
| 3434 | case PT_DCCP: | |||
| 3435 | return CONVERSATION_DCCP; | |||
| 3436 | case PT_IPX: | |||
| 3437 | return CONVERSATION_IPX; | |||
| 3438 | case PT_DDP: | |||
| 3439 | return CONVERSATION_DDP; | |||
| 3440 | case PT_IDP: | |||
| 3441 | return CONVERSATION_IDP; | |||
| 3442 | case PT_USB: | |||
| 3443 | return CONVERSATION_USB; | |||
| 3444 | case PT_I2C: | |||
| 3445 | /* XXX - this doesn't currently have conversations */ | |||
| 3446 | return CONVERSATION_I2C; | |||
| 3447 | case PT_IBQP: | |||
| 3448 | return CONVERSATION_IBQP; | |||
| 3449 | case PT_BLUETOOTH: | |||
| 3450 | return CONVERSATION_BLUETOOTH; | |||
| 3451 | case PT_IWARP_MPA: | |||
| 3452 | return CONVERSATION_IWARP_MPA; | |||
| 3453 | case PT_MCTP: | |||
| 3454 | return CONVERSATION_MCTP; | |||
| 3455 | } | |||
| 3456 | ||||
| 3457 | DISSECTOR_ASSERT(false)((void) ((0) ? (void)0 : (proto_report_dissector_bug("%s:%u: failed assertion \"%s\"" , "epan/conversation.c", 3457, "0")))); | |||
| 3458 | return CONVERSATION_NONE; | |||
| 3459 | } | |||
| 3460 | ||||
| 3461 | WS_DLL_PUBLIC__attribute__ ((visibility ("default"))) extern | |||
| 3462 | endpoint_type conversation_pt_to_endpoint_type(port_type pt) | |||
| 3463 | { | |||
| 3464 | switch (pt) | |||
| 3465 | { | |||
| 3466 | case PT_NONE: | |||
| 3467 | return ENDPOINT_NONECONVERSATION_NONE; | |||
| 3468 | case PT_SCTP: | |||
| 3469 | return ENDPOINT_SCTPCONVERSATION_SCTP; | |||
| 3470 | case PT_TCP: | |||
| 3471 | return ENDPOINT_TCPCONVERSATION_TCP; | |||
| 3472 | case PT_UDP: | |||
| 3473 | return ENDPOINT_UDPCONVERSATION_UDP; | |||
| 3474 | case PT_DCCP: | |||
| 3475 | return ENDPOINT_DCCPCONVERSATION_DCCP; | |||
| 3476 | case PT_IPX: | |||
| 3477 | return ENDPOINT_IPXCONVERSATION_IPX; | |||
| 3478 | case PT_DDP: | |||
| 3479 | return ENDPOINT_DDPCONVERSATION_DDP; | |||
| 3480 | case PT_IDP: | |||
| 3481 | return ENDPOINT_IDPCONVERSATION_IDP; | |||
| 3482 | case PT_USB: | |||
| 3483 | return ENDPOINT_USBCONVERSATION_USB; | |||
| 3484 | case PT_I2C: | |||
| 3485 | /* XXX - this doesn't have ports */ | |||
| 3486 | return ENDPOINT_I2CCONVERSATION_I2C; | |||
| 3487 | case PT_IBQP: | |||
| 3488 | return ENDPOINT_IBQPCONVERSATION_IBQP; | |||
| 3489 | case PT_BLUETOOTH: | |||
| 3490 | return ENDPOINT_BLUETOOTHCONVERSATION_BLUETOOTH; | |||
| 3491 | case PT_IWARP_MPA: | |||
| 3492 | return ENDPOINT_IWARP_MPACONVERSATION_IWARP_MPA; | |||
| 3493 | case PT_MCTP: | |||
| 3494 | return ENDPOINT_MCTPCONVERSATION_MCTP; | |||
| 3495 | } | |||
| 3496 | ||||
| 3497 | DISSECTOR_ASSERT(false)((void) ((0) ? (void)0 : (proto_report_dissector_bug("%s:%u: failed assertion \"%s\"" , "epan/conversation.c", 3497, "0")))); | |||
| 3498 | return ENDPOINT_NONECONVERSATION_NONE; | |||
| 3499 | } | |||
| 3500 | ||||
| 3501 | /* | |||
| 3502 | * Editor modelines - https://www.wireshark.org/tools/modelines.html | |||
| 3503 | * | |||
| 3504 | * Local variables: | |||
| 3505 | * c-basic-offset: 4 | |||
| 3506 | * tab-width: 8 | |||
| 3507 | * indent-tabs-mode: nil | |||
| 3508 | * End: | |||
| 3509 | * | |||
| 3510 | * vi: set shiftwidth=4 tabstop=8 expandtab: | |||
| 3511 | * :indentSize=4:tabSize=8:noTabs=true: | |||
| 3512 | */ |