### Bug Summary

File: | epan/conversation.c
Warning: | line 3300, column 5 Null returned from a function that is expected to return a non-null value

### Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name conversation.c -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 2 -fhalf-no-semantic-interposition -fno-delete-null-pointer-checks -mframe-pointer=all -relaxed-aliasing -fmath-errno -ffp-contract=on -fno-rounding-math -ffloat16-excess-precision=fast -fbfloat16-excess-precision=fast -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fdebug-compilation-dir=/builds/wireshark/wireshark/build -fcoverage-compilation-dir=/builds/wireshark/wireshark/build -resource-dir /usr/lib/llvm-21/lib/clang/21 -isystem /usr/include/glib-2.0 -isystem /usr/lib/x86_64-linux-gnu/glib-2.0/include -isystem /builds/wireshark/wireshark/epan -isystem /builds/wireshark/wireshark/build/epan -isystem /usr/include/mit-krb5 -isystem /usr/include/libxml2 -isystem /usr/include/lua5.4 -D G_DISABLE_DEPRECATED -D G_DISABLE_SINGLE_INCLUDES -D WS_BUILD_DLL -D WS_DEBUG -D WS_DEBUG_UTF_8 -D epan_EXPORTS -I /builds/wireshark/wireshark/build -I /builds/wireshark/wireshark -I /builds/wireshark/wireshark/include -I /builds/wireshark/wireshark/wiretap -D _GLIBCXX_ASSERTIONS -internal-isystem /usr/lib/llvm-21/lib/clang/21/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/14/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -fmacro-prefix-map=/builds/wireshark/wireshark/= -fmacro-prefix-map=/builds/wireshark/wireshark/build/= -fmacro-prefix-map=../= -Wno-format-truncation -Wno-format-nonliteral -Wno-pointer-sign -std=gnu11 -ferror-limit 19 -fvisibility=hidden -fwrapv -fwrapv-pointer -fstrict-flex-arrays=3 -stack-protector 2 -fstack-clash-protection -fcf-protection=full -fgnuc-version=4.2.1 -fskip-odr-check-in-gmf -fexceptions -fcolor-diagnostics -analyzer-output=html -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /builds/wireshark/wireshark/sbout/2025-10-20-100319-3623-1 -x c /builds/wireshark/wireshark/epan/conversation.c

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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 <epan/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-connection 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);
1 | 'conv' initialized to a null pointer value | →
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))
2 | ← | Assuming field 'pseudo_header' is not equal to NULL | →
5 | ← | Taking true branch | →
3288 | && (pinfo->rec->rec_header.packet_header.pkt_encap == WTAP_ENCAP_ETHERNET1)
3 | ← | Assuming field 'pkt_encap' is equal to WTAP_ENCAP_ETHERNET | →
3289 | && (prefs.conversation_deinterlacing_key>0)) {
4 | ← | Assuming field 'conversation_deinterlacing_key' is > 0 | →
3290 |
3291 | conversation_t *underlying_conv = find_conversation_deinterlacer_pinfo(pinfo);
3292 | if(underlying_conv) {
6 | ← | Assuming 'underlying_conv' is null | →
7 | ← | Taking false branch | →
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;
8 | ← | Null returned from a function that is expected to return a non-null value
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 | */