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req_resp_hdrs.h
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1
12#ifndef __REQ_RESP_HDRS_H__
13#define __REQ_RESP_HDRS_H__
14
15#include "ws_symbol_export.h"
16#include <epan/packet.h>
17#include <wsutil/strtoi.h>
18
43WS_DLL_PUBLIC bool
44 req_resp_hdrs_do_reassembly(tvbuff_t *tvb, const int offset, packet_info *pinfo,
45 const bool desegment_headers, const bool desegment_body,
46 bool desegment_until_fin, int *last_chunk_offset,
47 dissector_table_t streaming_subdissector_table, dissector_handle_t *streaming_chunk_handle);
48
50 static inline bool
51starts_with_chunk_size(tvbuff_t* tvb, const int offset, packet_info* pinfo)
52{
53 unsigned chunk_size = 0;
54 unsigned linelen;
55
56 if (!tvb_find_line_end_remaining(tvb, offset, &linelen, NULL))
57 return false;
58
59 char* chunk_string = (char*)tvb_get_string_enc(pinfo->pool, tvb, offset, linelen, ENC_ASCII);
60 char* c = chunk_string;
61
62 /* ignore extensions, including optional BWS ("bad whitespace")
63 * in the grammar for historical reasons, see RFC 9112 7.1.1.
64 */
65 if ((c = strpbrk(c, "; \t"))) {
66 *c = '\0';
67 }
68
69 if (!ws_hexstrtou32(chunk_string, NULL, &chunk_size)) {
70 return false; /* can not get chunk size*/
71 } else if (chunk_size > (1U << 31)) {
72 return false; /* chunk size is unreasonable */
73 }
74 return true;
75}
76
77#endif
tvb_get_string_enc
uint8_t * tvb_get_string_enc(wmem_allocator_t *scope, tvbuff_t *tvb, const unsigned offset, const unsigned length, const unsigned encoding)
Extract and convert a string from a tvbuff to UTF-8 using the specified encoding.
Definition tvbuff.c:3726
tvb_find_line_end_remaining
bool tvb_find_line_end_remaining(tvbuff_t *tvb, const unsigned offset, unsigned *linelen, unsigned *next_offset)
Locate the end of a line in a tvbuff.
Definition tvbuff.c:4702
packet.h
req_resp_hdrs_do_reassembly
WS_DLL_PUBLIC bool req_resp_hdrs_do_reassembly(tvbuff_t *tvb, const int offset, packet_info *pinfo, const bool desegment_headers, const bool desegment_body, bool desegment_until_fin, int *last_chunk_offset, dissector_table_t streaming_subdissector_table, dissector_handle_t *streaming_chunk_handle)
Definition req_resp_hdrs.c:28
strtoi.h
_packet_info
Definition packet_info.h:43
_packet_info::pool
wmem_allocator_t * pool
Definition packet_info.h:164
dissector_handle
Definition packet.c:852
dissector_table
Definition packet.c:97
tvbuff
Definition tvbuff-int.h:36