620 lines
23 KiB
C
620 lines
23 KiB
C
/* packet-http3.c
|
|
* Routines for HTTP/3 dissection
|
|
* Copyright 2019, Peter Wu <peter@lekensteyn.nl>
|
|
*
|
|
* Wireshark - Network traffic analyzer
|
|
* By Gerald Combs <gerald@wireshark.org>
|
|
* Copyright 1998 Gerald Combs
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0-or-later
|
|
*/
|
|
|
|
/*
|
|
* https://tools.ietf.org/html/draft-ietf-quic-http-29
|
|
* https://tools.ietf.org/html/draft-ietf-quic-qpack-16
|
|
*
|
|
* Depends on the QUIC dissector for providing a reassembled stream of data, see
|
|
* packet-quic.c for details about supported QUIC draft versions.
|
|
* Currently supported HTTP/3 versions: h3-23 up to and including h3-29.
|
|
*/
|
|
|
|
#include <config.h>
|
|
|
|
#include <epan/packet.h>
|
|
#include <epan/expert.h>
|
|
|
|
#include "packet-quic.h"
|
|
|
|
void proto_reg_handoff_http3(void);
|
|
void proto_register_http3(void);
|
|
|
|
static int proto_http3 = -1;
|
|
static int hf_http3_stream_type = -1;
|
|
static int hf_http3_push_id = -1;
|
|
static int hf_http3_frame_type = -1;
|
|
static int hf_http3_frame_length = -1;
|
|
static int hf_http3_frame_payload = -1;
|
|
static int hf_http3_settings = -1;
|
|
static int hf_http3_settings_identifier = -1;
|
|
static int hf_http3_settings_value = -1;
|
|
static int hf_http3_settings_qpack_max_table_capacity = -1;
|
|
static int hf_http3_settings_max_field_section_size = -1;
|
|
static int hf_http3_settings_qpack_blocked_streams = -1;
|
|
static int hf_http3_settings_extended_connect = -1;
|
|
static int hf_http3_settings_webtransport = -1;
|
|
static int hf_http3_settings_h3_datagram = -1;
|
|
static int hf_http3_settings_h3_datagram_draft04 = -1;
|
|
static int hf_http3_priority_update_element_id = -1;
|
|
static int hf_http3_priority_update_field_value = -1;
|
|
|
|
static expert_field ei_http3_unknown_stream_type = EI_INIT;
|
|
|
|
/* Initialize the subtree pointers */
|
|
static gint ett_http3 = -1;
|
|
static gint ett_http3_settings = -1;
|
|
|
|
/**
|
|
* Unidirectional stream types.
|
|
* https://tools.ietf.org/html/draft-ietf-quic-http-29#section-6.2
|
|
* https://tools.ietf.org/html/draft-ietf-quic-qpack-16#section-4.2
|
|
*/
|
|
enum http3_stream_type {
|
|
HTTP3_STREAM_TYPE_CONTROL,
|
|
HTTP3_STREAM_TYPE_PUSH,
|
|
HTTP3_STREAM_TYPE_QPACK_ENCODER,
|
|
HTTP3_STREAM_TYPE_QPACK_DECODER,
|
|
};
|
|
|
|
/*
|
|
* Unidirectional stream types (62-bit code space).
|
|
* https://tools.ietf.org/html/draft-ietf-quic-http-29#section-11.2.4
|
|
*/
|
|
static const val64_string http3_stream_types[] = {
|
|
/* 0x00 - 0x3f Assigned via Standards Action or IESG Approval. */
|
|
{ 0x00, "Control Stream" },
|
|
{ 0x01, "Push Stream" },
|
|
{ 0x02, "QPACK Encoder Stream" },
|
|
{ 0x03, "QPACK Decoder Stream" },
|
|
/* 0x40 - 0x3FFFFFFFFFFFFFFF Assigned via Specification Required policy */
|
|
{ 0, NULL }
|
|
};
|
|
|
|
/*
|
|
* Frame type codes (62-bit code space).
|
|
* https://tools.ietf.org/html/draft-ietf-quic-http-29#section-11.2.1
|
|
*/
|
|
#define HTTP3_DATA 0x0
|
|
#define HTTP3_HEADERS 0x1
|
|
#define HTTP3_CANCEL_PUSH 0x3
|
|
#define HTTP3_SETTINGS 0x4
|
|
#define HTTP3_PUSH_PROMISE 0x5
|
|
#define HTTP3_GOAWAY 0x7
|
|
#define HTTP3_MAX_PUSH_ID 0xD
|
|
#define HTTP3_WEBTRANSPORT_BISTREAM 0x41
|
|
#define HTTP3_WEBTRANSPORT_UNISTREAM 0x54
|
|
#define HTTP3_PRIORITY_UPDATE_REQUEST_STREAM 0xF0700
|
|
#define HTTP3_PRIORITY_UPDATE_PUSH_STREAM 0xF0701
|
|
|
|
static const val64_string http3_frame_types[] = {
|
|
/* 0x00 - 0x3f Assigned via Standards Action or IESG Approval. */
|
|
{ HTTP3_DATA, "DATA" },
|
|
{ HTTP3_HEADERS, "HEADERS" },
|
|
{ 0x02, "Reserved" }, // "PRIORITY" in draft-22 and before
|
|
{ HTTP3_CANCEL_PUSH, "CANCEL_PUSH" },
|
|
{ HTTP3_SETTINGS, "SETTINGS" },
|
|
{ HTTP3_PUSH_PROMISE, "PUSH_PROMISE" },
|
|
{ 0x06, "Reserved" },
|
|
{ HTTP3_GOAWAY, "GOAWAY" },
|
|
{ 0x08, "Reserved" },
|
|
{ 0x09, "Reserved" },
|
|
{ HTTP3_MAX_PUSH_ID, "MAX_PUSH_ID" },
|
|
{ 0x0e, "Reserved" }, // "DUPLICATE_PUSH" in draft-26 and before
|
|
{ HTTP3_WEBTRANSPORT_BISTREAM, "WEBTRANSPORT_BISTREAM" }, // draft-ietf-webtrans-http3-03
|
|
{ HTTP3_WEBTRANSPORT_UNISTREAM, "WEBTRANSPORT_UNISTREAM" }, // draft-ietf-webtrans-http3-03
|
|
{ HTTP3_PRIORITY_UPDATE_REQUEST_STREAM, "PRIORITY_UPDATE" }, // draft-ietf-httpbis-priority-03
|
|
{ HTTP3_PRIORITY_UPDATE_PUSH_STREAM, "PRIORITY_UPDATE" }, // draft-ietf-httpbis-priority-03
|
|
/* 0x40 - 0x3FFFFFFFFFFFFFFF Assigned via Specification Required policy */
|
|
{ 0, NULL }
|
|
};
|
|
|
|
/*
|
|
* Settings parameter type codes (62-bit code space).
|
|
* https://tools.ietf.org/html/draft-ietf-quic-http-29#name-http-2-settings-parameters
|
|
*/
|
|
|
|
#define HTTP3_QPACK_MAX_TABLE_CAPACITY 0x01
|
|
#define HTTP3_SETTINGS_MAX_FIELD_SECTION_SIZE 0x06
|
|
#define HTTP3_QPACK_BLOCKED_STREAMS 0x07
|
|
#define HTTP3_EXTENDED_CONNECT 0x08 /* https://datatracker.ietf.org/doc/draft-ietf-httpbis-h3-websockets */
|
|
#define HTTP3_H3_DATAGRAM 0x33 // rfc9297
|
|
#define HTTP3_H3_DATAGRAM_DRAFT04 0xffd277 // draft-ietf-masque-h3-datagram-04
|
|
#define HTTP3_WEBTRANSPORT 0x2b603742 // draft-ietf-webtrans-http3-03
|
|
|
|
static const val64_string http3_settings_vals[] = {
|
|
{ HTTP3_QPACK_MAX_TABLE_CAPACITY, "Max Table Capacity" },
|
|
{ HTTP3_SETTINGS_MAX_FIELD_SECTION_SIZE, "Max Field Section Size" },
|
|
{ HTTP3_QPACK_BLOCKED_STREAMS, "Blocked Streams" },
|
|
{ HTTP3_EXTENDED_CONNECT, "Extended CONNECT" },
|
|
{ HTTP3_WEBTRANSPORT, "Enable WebTransport" },
|
|
{ HTTP3_H3_DATAGRAM, "Enable Datagram" },
|
|
{ HTTP3_H3_DATAGRAM_DRAFT04, "Enable Datagram Draft04" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
typedef struct _http3_stream_info {
|
|
guint64 uni_stream_type;
|
|
guint64 broken_from_offset; /**< Unrecognized stream starting at offset (if non-zero). */
|
|
} http3_stream_info;
|
|
|
|
/**
|
|
* Whether this is a reserved code point for Stream Type, Frame Type, Error
|
|
* Code, etc.
|
|
*/
|
|
static inline gboolean
|
|
http3_is_reserved_code(guint64 stream_type)
|
|
{
|
|
return (stream_type - 0x21) % 0x1f == 0;
|
|
}
|
|
|
|
static gboolean
|
|
try_get_quic_varint(tvbuff_t *tvb, int offset, guint64 *value, int *lenvar)
|
|
{
|
|
if (tvb_reported_length_remaining(tvb, offset) == 0) {
|
|
return FALSE;
|
|
}
|
|
gint len = 1 << (tvb_get_guint8(tvb, offset) >> 6);
|
|
if (tvb_reported_length_remaining(tvb, offset) < len) {
|
|
return FALSE;
|
|
}
|
|
*lenvar = len;
|
|
if (value) {
|
|
gint n = (gint)tvb_get_varint(tvb, offset, -1, value, ENC_VARINT_QUIC);
|
|
DISSECTOR_ASSERT_CMPINT(n, ==, len);
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
/** Returns the size of the whole HTTP/3 frame. */
|
|
static int
|
|
get_http3_frame_size(tvbuff_t *tvb, int offset)
|
|
{
|
|
int type_size, length_size;
|
|
guint64 frame_length;
|
|
|
|
if (!try_get_quic_varint(tvb, offset, NULL, &type_size)) {
|
|
return 0;
|
|
}
|
|
offset += type_size;
|
|
|
|
if (!try_get_quic_varint(tvb, offset, &frame_length, &length_size)) {
|
|
return 0;
|
|
}
|
|
|
|
guint64 frame_size = type_size + length_size + frame_length;
|
|
if (frame_size > G_MAXINT32) {
|
|
// We do not support such large frames.
|
|
return 0;
|
|
}
|
|
return (int)frame_size;
|
|
}
|
|
|
|
static gboolean
|
|
http3_check_frame_size(tvbuff_t *tvb, packet_info *pinfo, int offset)
|
|
{
|
|
int frame_size = get_http3_frame_size(tvb, offset);
|
|
int remaining = tvb_reported_length_remaining(tvb, offset);
|
|
if (frame_size && frame_size <= remaining) {
|
|
return TRUE;
|
|
}
|
|
|
|
pinfo->desegment_offset = offset;
|
|
pinfo->desegment_len = frame_size ? (frame_size - remaining) : DESEGMENT_ONE_MORE_SEGMENT;
|
|
return FALSE;
|
|
}
|
|
|
|
/* Settings */
|
|
static int
|
|
dissect_http3_settings(tvbuff_t* tvb, packet_info* pinfo _U_, proto_tree* http3_tree, guint offset)
|
|
{
|
|
guint64 settingsid, value;
|
|
proto_item *ti_settings, *pi;
|
|
int lenvar;
|
|
proto_tree *settings_tree;
|
|
while(tvb_reported_length_remaining(tvb, offset) > 0){
|
|
|
|
ti_settings = proto_tree_add_item(http3_tree, hf_http3_settings, tvb, offset, 2, ENC_NA);
|
|
settings_tree = proto_item_add_subtree(ti_settings, ett_http3_settings);
|
|
pi = proto_tree_add_item_ret_varint(settings_tree, hf_http3_settings_identifier, tvb, offset, -1, ENC_VARINT_QUIC, &settingsid, &lenvar);
|
|
/* Check if it is a GREASE Settings ID */
|
|
if (http3_is_reserved_code(settingsid)) {
|
|
proto_item_set_text(pi, "Type: GREASE (%#" PRIx64 ")", settingsid);
|
|
proto_item_append_text(ti_settings, " - GREASE" );
|
|
} else {
|
|
proto_item_append_text(ti_settings, " - %s",
|
|
val64_to_str_const(settingsid, http3_settings_vals, "Unknown") );
|
|
}
|
|
offset += lenvar;
|
|
|
|
|
|
proto_tree_add_item_ret_varint(settings_tree, hf_http3_settings_value, tvb, offset, -1, ENC_VARINT_QUIC, NULL, &lenvar);
|
|
switch(settingsid){
|
|
case HTTP3_QPACK_MAX_TABLE_CAPACITY:
|
|
proto_tree_add_item_ret_varint(settings_tree, hf_http3_settings_qpack_max_table_capacity, tvb, offset, -1, ENC_VARINT_QUIC, &value, &lenvar);
|
|
proto_item_append_text(ti_settings, ": %" PRIu64, value );
|
|
break;
|
|
case HTTP3_SETTINGS_MAX_FIELD_SECTION_SIZE:
|
|
proto_tree_add_item_ret_varint(settings_tree, hf_http3_settings_max_field_section_size, tvb, offset, -1, ENC_VARINT_QUIC, &value, &lenvar);
|
|
proto_item_append_text(ti_settings, ": %" PRIu64, value );
|
|
break;
|
|
case HTTP3_QPACK_BLOCKED_STREAMS:
|
|
proto_tree_add_item_ret_varint(settings_tree, hf_http3_settings_qpack_blocked_streams, tvb, offset, -1, ENC_VARINT_QUIC, &value, &lenvar);
|
|
proto_item_append_text(ti_settings, ": %" PRIu64, value );
|
|
break;
|
|
case HTTP3_EXTENDED_CONNECT:
|
|
proto_tree_add_item_ret_varint(settings_tree, hf_http3_settings_extended_connect, tvb, offset, -1, ENC_VARINT_QUIC, &value, &lenvar);
|
|
proto_item_append_text(ti_settings, ": %" PRIu64, value );
|
|
break;
|
|
case HTTP3_WEBTRANSPORT:
|
|
proto_tree_add_item_ret_varint(settings_tree, hf_http3_settings_webtransport, tvb, offset, -1, ENC_VARINT_QUIC, &value, &lenvar);
|
|
proto_item_append_text(ti_settings, ": %" PRIu64, value );
|
|
break;
|
|
case HTTP3_H3_DATAGRAM:
|
|
proto_tree_add_item_ret_varint(settings_tree, hf_http3_settings_h3_datagram, tvb, offset, -1, ENC_VARINT_QUIC, &value, &lenvar);
|
|
proto_item_append_text(ti_settings, ": %" PRIu64, value );
|
|
break;
|
|
case HTTP3_H3_DATAGRAM_DRAFT04:
|
|
proto_tree_add_item_ret_varint(settings_tree, hf_http3_settings_h3_datagram_draft04, tvb, offset, -1, ENC_VARINT_QUIC, &value, &lenvar);
|
|
proto_item_append_text(ti_settings, ": %" PRIu64, value );
|
|
break;
|
|
default:
|
|
/* No Default */
|
|
break;
|
|
}
|
|
offset += lenvar;
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
/* Priority Update */
|
|
static int
|
|
dissect_http3_priority_update(tvbuff_t* tvb, packet_info* pinfo _U_, proto_tree* http3_tree, guint offset, guint64 frame_length)
|
|
{
|
|
guint64 priority_field_value_len;
|
|
int lenvar;
|
|
|
|
proto_tree_add_item_ret_varint(http3_tree, hf_http3_priority_update_element_id, tvb, offset, -1, ENC_VARINT_QUIC, NULL, &lenvar);
|
|
offset += lenvar;
|
|
priority_field_value_len = frame_length - lenvar;
|
|
|
|
proto_tree_add_item(http3_tree, hf_http3_priority_update_field_value, tvb, offset, (int)priority_field_value_len, ENC_ASCII);
|
|
offset += (int)priority_field_value_len;
|
|
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_http3_frame(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset)
|
|
{
|
|
guint64 frame_type, frame_length;
|
|
int lenvar;
|
|
proto_item *pi;
|
|
|
|
pi = proto_tree_add_item_ret_varint(tree, hf_http3_frame_type, tvb, offset, -1, ENC_VARINT_QUIC, &frame_type, &lenvar);
|
|
offset += lenvar;
|
|
if (http3_is_reserved_code(frame_type)) {
|
|
proto_item_set_text(pi, "Type: Reserved (%#" PRIx64 ")", frame_type);
|
|
} else {
|
|
col_append_sep_str(pinfo->cinfo, COL_INFO, ", ", val64_to_str_const(frame_type, http3_frame_types, "Unknown"));
|
|
}
|
|
|
|
proto_tree_add_item_ret_varint(tree, hf_http3_frame_length, tvb, offset, -1, ENC_VARINT_QUIC, &frame_length, &lenvar);
|
|
offset += lenvar;
|
|
|
|
if (frame_length) {
|
|
proto_tree_add_item(tree, hf_http3_frame_payload, tvb, offset, (int)frame_length, ENC_NA);
|
|
|
|
switch (frame_type) {
|
|
case HTTP3_SETTINGS: { /* Settings Frame */
|
|
tvbuff_t *next_tvb = tvb_new_subset_length(tvb, offset, (int)frame_length);
|
|
dissect_http3_settings(next_tvb, pinfo,tree, 0);
|
|
}
|
|
break;
|
|
case HTTP3_PRIORITY_UPDATE_REQUEST_STREAM:
|
|
case HTTP3_PRIORITY_UPDATE_PUSH_STREAM: { /* Priority_Update Frame */
|
|
tvbuff_t *next_tvb = tvb_new_subset_length(tvb, offset, (int)frame_length);
|
|
dissect_http3_priority_update(next_tvb, pinfo,tree, 0, frame_length);
|
|
}
|
|
break;
|
|
}
|
|
|
|
offset += (int)frame_length;
|
|
}
|
|
|
|
|
|
return offset;
|
|
}
|
|
|
|
static void
|
|
report_unknown_stream_type(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset, quic_stream_info *stream_info, http3_stream_info *h3_stream)
|
|
{
|
|
/*
|
|
* "If the stream header indicates a stream type which is not supported by
|
|
* the recipient, the remainder of the stream cannot be consumed as the
|
|
* semantics are unknown."
|
|
* https://tools.ietf.org/html/draft-ietf-quic-http-29#page-28
|
|
*/
|
|
proto_tree_add_expert_format(tree, pinfo, &ei_http3_unknown_stream_type, tvb, offset, 0,
|
|
"Unknown stream type %#" PRIx64 " on Stream ID %#" PRIx64,
|
|
h3_stream->uni_stream_type, stream_info->stream_id);
|
|
}
|
|
|
|
static int
|
|
dissect_http3_uni_stream(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset, quic_stream_info *stream_info, http3_stream_info *h3_stream)
|
|
{
|
|
guint64 stream_type;
|
|
int lenvar;
|
|
proto_item *pi;
|
|
|
|
if (stream_info->offset == 0) {
|
|
pi = proto_tree_add_item_ret_varint(tree, hf_http3_stream_type, tvb, offset, -1, ENC_VARINT_QUIC, &stream_type, &lenvar);
|
|
offset += lenvar;
|
|
if (http3_is_reserved_code(stream_type)) {
|
|
// Reserved to exercise requirement that unknown types are ignored.
|
|
proto_item_set_text(pi, "Stream Type: Reserved (%#" PRIx64 ")", stream_type);
|
|
}
|
|
h3_stream->uni_stream_type = stream_type;
|
|
} else {
|
|
stream_type = h3_stream->uni_stream_type;
|
|
}
|
|
|
|
switch (stream_type) {
|
|
case HTTP3_STREAM_TYPE_CONTROL:
|
|
break;
|
|
case HTTP3_STREAM_TYPE_PUSH:
|
|
// The remaining data of this stream consists of HTTP/3 frames.
|
|
if (stream_info->offset == 0) {
|
|
proto_tree_add_item_ret_varint(tree, hf_http3_push_id, tvb, offset, -1, ENC_VARINT_QUIC, NULL, &lenvar);
|
|
offset += lenvar;
|
|
}
|
|
break;
|
|
case HTTP3_STREAM_TYPE_QPACK_ENCODER:
|
|
// TODO
|
|
offset = tvb_captured_length(tvb);
|
|
break;
|
|
case HTTP3_STREAM_TYPE_QPACK_DECODER:
|
|
// TODO
|
|
offset = tvb_captured_length(tvb);
|
|
break;
|
|
default:
|
|
// Unknown or reserved stream type, consume everything.
|
|
if (!http3_is_reserved_code(stream_type)) {
|
|
if (!PINFO_FD_VISITED(pinfo)) {
|
|
h3_stream->broken_from_offset = stream_info->offset + offset;
|
|
}
|
|
report_unknown_stream_type(tvb, pinfo, tree, offset, stream_info, h3_stream);
|
|
}
|
|
offset = tvb_captured_length(tvb);
|
|
break;
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_http3(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
|
|
{
|
|
quic_stream_info *stream_info = (quic_stream_info *)data;
|
|
proto_item *ti;
|
|
proto_tree *http3_tree;
|
|
int offset = 0;
|
|
http3_stream_info *h3_stream;
|
|
|
|
if (!stream_info) {
|
|
return 0;
|
|
}
|
|
|
|
switch (QUIC_STREAM_TYPE(stream_info->stream_id)) {
|
|
case QUIC_STREAM_CLIENT_BIDI:
|
|
/* Used for HTTP requests and responses. */
|
|
if (!http3_check_frame_size(tvb, pinfo, offset)) {
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
break;
|
|
case QUIC_STREAM_SERVER_BIDI:
|
|
/* "HTTP/3 does not use server-initiated bidirectional streams,
|
|
* though an extension could define a use for these streams." */
|
|
break;
|
|
case QUIC_STREAM_CLIENT_UNI:
|
|
case QUIC_STREAM_SERVER_UNI:
|
|
break;
|
|
}
|
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "HTTP3");
|
|
// Only clear the columns if this is the first HTTP/3 STREAM in the packet.
|
|
if (!proto_is_frame_protocol(pinfo->layers, "http3")) {
|
|
col_clear(pinfo->cinfo, COL_INFO);
|
|
}
|
|
|
|
ti = proto_tree_add_item(tree, proto_http3, tvb, 0, -1, ENC_NA);
|
|
http3_tree = proto_item_add_subtree(ti, ett_http3);
|
|
|
|
h3_stream = (http3_stream_info *)quic_stream_get_proto_data(pinfo, stream_info);
|
|
if (!h3_stream) {
|
|
h3_stream = wmem_new0(wmem_file_scope(), http3_stream_info);
|
|
quic_stream_add_proto_data(pinfo, stream_info, h3_stream);
|
|
}
|
|
|
|
// If a STREAM has unknown data, everything afterwards cannot be dissected.
|
|
if (h3_stream->broken_from_offset && h3_stream->broken_from_offset <= stream_info->offset + offset) {
|
|
report_unknown_stream_type(tvb, pinfo, tree, offset, stream_info, h3_stream);
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
switch (QUIC_STREAM_TYPE(stream_info->stream_id)) {
|
|
case QUIC_STREAM_CLIENT_BIDI:
|
|
/* Used for HTTP requests and responses. */
|
|
break;
|
|
|
|
case QUIC_STREAM_SERVER_BIDI:
|
|
/* "HTTP/3 does not use server-initiated bidirectional streams,
|
|
* though an extension could define a use for these streams." */
|
|
// XXX expert info?
|
|
return tvb_captured_length(tvb);
|
|
|
|
case QUIC_STREAM_CLIENT_UNI:
|
|
case QUIC_STREAM_SERVER_UNI:
|
|
offset = dissect_http3_uni_stream(tvb, pinfo, http3_tree, offset, stream_info, h3_stream);
|
|
break;
|
|
}
|
|
|
|
while (tvb_reported_length_remaining(tvb, offset)) {
|
|
if (!http3_check_frame_size(tvb, pinfo, offset)) {
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
offset = dissect_http3_frame(tvb, pinfo, http3_tree, offset);
|
|
}
|
|
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
void
|
|
proto_register_http3(void)
|
|
{
|
|
expert_module_t *expert_http3;
|
|
|
|
static hf_register_info hf[] = {
|
|
{ &hf_http3_stream_type,
|
|
{ "Stream Type", "http3.stream_type",
|
|
FT_UINT64, BASE_HEX|BASE_VAL64_STRING, VALS64(http3_stream_types), 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_http3_push_id,
|
|
{ "Push ID", "http3.push_id",
|
|
FT_UINT64, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_http3_frame_type,
|
|
{ "Type", "http3.frame_type",
|
|
FT_UINT64, BASE_HEX|BASE_VAL64_STRING, VALS64(http3_frame_types), 0x0,
|
|
"Frame Type", HFILL }
|
|
},
|
|
{ &hf_http3_frame_length,
|
|
{ "Length", "http3.frame_length",
|
|
FT_UINT64, BASE_DEC, NULL, 0x0,
|
|
"Length of the Frame Payload", HFILL }
|
|
},
|
|
{ &hf_http3_frame_payload,
|
|
{ "Frame Payload", "http3.frame_payload",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
|
|
/* Settings */
|
|
{ &hf_http3_settings,
|
|
{ "Settings", "http3.settings",
|
|
FT_NONE, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_http3_settings_identifier,
|
|
{ "Settings Identifier", "http3.settings.id",
|
|
FT_UINT64, BASE_HEX|BASE_VAL64_STRING, VALS64(http3_settings_vals), 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_http3_settings_value,
|
|
{ "Settings Value", "http3.settings.value",
|
|
FT_UINT64, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_http3_settings_qpack_max_table_capacity,
|
|
{ "Max Table Capacity", "http3.settings.qpack.max_table_capacity",
|
|
FT_UINT64, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_http3_settings_max_field_section_size,
|
|
{ "Max header list size", "http3.settings.max_field_section_size",
|
|
FT_UINT64, BASE_DEC, NULL, 0x0,
|
|
"The default value is unlimited.", HFILL }
|
|
},
|
|
{ &hf_http3_settings_qpack_blocked_streams,
|
|
{ "Blocked Streams", "http3.settings.qpack.blocked_streams",
|
|
FT_UINT64, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_http3_settings_extended_connect,
|
|
{ "Extended CONNECT", "http3.settings.extended_connect",
|
|
FT_UINT64, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_http3_settings_webtransport,
|
|
{ "WebTransport", "http3.settings.webtransport",
|
|
FT_UINT64, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_http3_settings_h3_datagram,
|
|
{ "H3 DATAGRAM", "http3.settings.h3_datagram",
|
|
FT_UINT64, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_http3_settings_h3_datagram_draft04,
|
|
{ "H3 DATAGRAM Draft04", "http3.settings.h3_datagram_draft04",
|
|
FT_UINT64, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
|
|
/* Priority Update */
|
|
{ &hf_http3_priority_update_element_id,
|
|
{ "Priority Update Element ID", "http3.priority_update_element_id",
|
|
FT_UINT64, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_http3_priority_update_field_value,
|
|
{ "Priority Update Field Value", "http3.priority_update_field_value",
|
|
FT_STRING, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
|
|
};
|
|
|
|
static gint *ett[] = {
|
|
&ett_http3,
|
|
&ett_http3_settings,
|
|
};
|
|
|
|
static ei_register_info ei[] = {
|
|
{ &ei_http3_unknown_stream_type,
|
|
{ "http3.unknown_stream_type", PI_UNDECODED, PI_WARN,
|
|
"An unknown stream type was encountered", EXPFILL }
|
|
},
|
|
};
|
|
|
|
proto_http3 = proto_register_protocol("Hypertext Transfer Protocol Version 3", "HTTP3", "http3");
|
|
|
|
proto_register_field_array(proto_http3, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
|
|
expert_http3 = expert_register_protocol(proto_http3);
|
|
expert_register_field_array(expert_http3, ei, array_length(ei));
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_http3(void)
|
|
{
|
|
dissector_handle_t http3_handle;
|
|
|
|
http3_handle = create_dissector_handle(dissect_http3, proto_http3);
|
|
dissector_add_string("quic.proto", "h3", http3_handle);
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - https://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local variables:
|
|
* c-basic-offset: 4
|
|
* tab-width: 8
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*
|
|
* vi: set shiftwidth=4 tabstop=8 expandtab:
|
|
* :indentSize=4:tabSize=8:noTabs=true:
|
|
*/
|