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wireshark/epan/dissectors/packet-scylla.c

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/* packet-scylla.c
* Routines for Scylla RPC dissection
* Copyright 2020 ScyllaDB, Piotr Sarna <sarna@scylladb.com>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
/*
* ScyllaDB RPC protocol is used for inter-node communication
* in the ScyllaDB database - reading/sending data, exchanging
* cluster information through gossip, updating schemas, etc.
*
* Protocol references:
* https://github.com/scylladb/seastar/blob/master/doc/rpc.md
* https://github.com/scylladb/scylla/blob/master/message/messaging_service.hh
*
*/
#include <config.h>
#include <epan/expert.h>
#include <epan/packet.h>
#include <epan/prefs.h>
#include <epan/dissectors/packet-tcp.h>
void proto_reg_handoff_scylla(void);
void proto_register_scylla(void);
#define SCYLLA_PORT 0 /* Not IANA registered, 7000 is the expected value */
#define SCYLLA_HEADER_SIZE 28
#define SCYLLA_HEADER_VERB_OFFSET 8
#define SCYLLA_HEADER_MSG_ID_OFFSET 16
#define SCYLLA_HEADER_LEN_OFFSET 24
#define SCYLLA_RESPONSE_SIZE 12
#define SCYLLA_RESPONSE_MSG_ID_OFFSET 0
#define SCYLLA_RESPONSE_LEN_OFFSET 8
#define SCYLLA_NEGOTIATION_SIZE 12
#define SCYLLA_NEGOTIATION_LEN_OFFSET 8
static int proto_scylla = -1;
static int hf_scylla_request = -1;
static int hf_scylla_request_response_frame = -1;
static int hf_scylla_timeout = -1;
static int hf_scylla_verb = -1;
static int hf_scylla_msg_id = -1;
static int hf_scylla_len = -1;
static int hf_scylla_response = -1;
static int hf_scylla_response_size = -1;
static int hf_scylla_response_request_frame = -1;
static int hf_scylla_negotiation_magic = -1;
static int hf_scylla_negotiation_size = -1;
static int hf_scylla_payload = -1; // TODO: dissect everything, so that generic "payload" is not needed
// Mutation
static int hf_scylla_mut_size1 = -1;
static int hf_scylla_mut_size2 = -1;
static int hf_scylla_mut_table_id = -1;
static int hf_scylla_mut_schema_id = -1;
static int hf_scylla_mut_len_pkeys = -1;
static int hf_scylla_mut_num_pkeys = -1;
static int hf_scylla_mut_len_pkey = -1;
static int hf_scylla_mut_pkey = -1;
// Read data
static int hf_scylla_read_data_timeout = -1;
static int hf_scylla_read_data_table_id = -1;
static int hf_scylla_read_data_schema_version = -1;
static gint ett_scylla = -1;
static gint ett_scylla_header = -1;
static gint ett_scylla_response = -1;
static gint ett_scylla_negotiation = -1;
static gint ett_scylla_mut = -1;
static gint ett_scylla_mut_pkey = -1;
static gint ett_scylla_read_data = -1;
static gboolean scylla_desegment = TRUE;
static expert_field ei_scylla_response_missing = EI_INIT;
enum scylla_packets {
CLIENT_ID = 0,
MUTATION = 1,
MUTATION_DONE = 2,
READ_DATA = 3,
READ_MUTATION_DATA = 4,
READ_DIGEST = 5,
// Used by gossip
GOSSIP_DIGEST_SYN = 6,
GOSSIP_DIGEST_ACK = 7,
GOSSIP_DIGEST_ACK2 = 8,
GOSSIP_ECHO = 9,
GOSSIP_SHUTDOWN = 10,
// end of gossip verb
DEFINITIONS_UPDATE = 11,
TRUNCATE = 12,
REPLICATION_FINISHED = 13,
MIGRATION_REQUEST = 14,
// Used by streaming
PREPARE_MESSAGE = 15,
PREPARE_DONE_MESSAGE = 16,
STREAM_MUTATION = 17,
STREAM_MUTATION_DONE = 18,
COMPLETE_MESSAGE = 19,
// end of streaming verbs
REPAIR_CHECKSUM_RANGE = 20,
GET_SCHEMA_VERSION = 21,
SCHEMA_CHECK = 22,
COUNTER_MUTATION = 23,
MUTATION_FAILED = 24,
STREAM_MUTATION_FRAGMENTS = 25,
REPAIR_ROW_LEVEL_START = 26,
REPAIR_ROW_LEVEL_STOP = 27,
REPAIR_GET_FULL_ROW_HASHES = 28,
REPAIR_GET_COMBINED_ROW_HASH = 29,
REPAIR_GET_SYNC_BOUNDARY = 30,
REPAIR_GET_ROW_DIFF = 31,
REPAIR_PUT_ROW_DIFF = 32,
REPAIR_GET_ESTIMATED_PARTITIONS = 33,
REPAIR_SET_ESTIMATED_PARTITIONS = 34,
REPAIR_GET_DIFF_ALGORITHMS = 35,
REPAIR_GET_ROW_DIFF_WITH_RPC_STREAM = 36,
REPAIR_PUT_ROW_DIFF_WITH_RPC_STREAM = 37,
REPAIR_GET_FULL_ROW_HASHES_WITH_RPC_STREAM = 38,
PAXOS_PREPARE = 39,
PAXOS_ACCEPT = 40,
PAXOS_LEARN = 41,
HINT_MUTATION = 42,
PAXOS_PRUNE = 43,
LAST = 44,
};
static const val64_string packettypenames[] = {
{CLIENT_ID, "CLIENT_ID"},
{MUTATION, "MUTATION"},
{MUTATION_DONE, "MUTATION_DONE"},
{READ_DATA, "READ_DATA"},
{READ_MUTATION_DATA, "READ_MUTATION_DATA"},
{READ_DIGEST, "READ_DIGEST"},
{GOSSIP_DIGEST_SYN, "GOSSIP_DIGEST_SYN"},
{GOSSIP_DIGEST_ACK, "GOSSIP_DIGEST_ACK"},
{GOSSIP_DIGEST_ACK2, "GOSSIP_DIGEST_ACK2"},
{GOSSIP_ECHO, "GOSSIP_ECHO"},
{GOSSIP_SHUTDOWN, "GOSSIP_SHUTDOWN"},
{DEFINITIONS_UPDATE, "DEFINITIONS_UPDATE"},
{TRUNCATE, "TRUNCATE"},
{REPLICATION_FINISHED, "REPLICATION_FINISHED"},
{MIGRATION_REQUEST, "MIGRATION_REQUEST"},
{PREPARE_MESSAGE, "PREPARE_MESSAGE"},
{PREPARE_DONE_MESSAGE, "PREPARE_DONE_MESSAGE"},
{STREAM_MUTATION, "STREAM_MUTATION"},
{STREAM_MUTATION_DONE, "STREAM_MUTATION_DONE"},
{COMPLETE_MESSAGE, "COMPLETE_MESSAGE"},
{REPAIR_CHECKSUM_RANGE, "REPAIR_CHECKSUM_RANGE"},
{GET_SCHEMA_VERSION, "GET_SCHEMA_VERSION"},
{SCHEMA_CHECK, "SCHEMA_CHECK"},
{COUNTER_MUTATION, "COUNTER_MUTATION"},
{MUTATION_FAILED, "MUTATION_FAILED"},
{STREAM_MUTATION_FRAGMENTS, "STREAM_MUTATION_FRAGMENTS"},
{REPAIR_ROW_LEVEL_START, "REPAIR_ROW_LEVEL_START"},
{REPAIR_ROW_LEVEL_STOP, "REPAIR_ROW_LEVEL_STOP"},
{REPAIR_GET_FULL_ROW_HASHES, "REPAIR_GET_FULL_ROW_HASHES"},
{REPAIR_GET_COMBINED_ROW_HASH, "REPAIR_GET_COMBINED_ROW_HASH"},
{REPAIR_GET_SYNC_BOUNDARY, "REPAIR_GET_SYNC_BOUNDARY"},
{REPAIR_GET_ROW_DIFF, "REPAIR_GET_ROW_DIFF"},
{REPAIR_PUT_ROW_DIFF, "REPAIR_PUT_ROW_DIFF"},
{REPAIR_GET_ESTIMATED_PARTITIONS, "REPAIR_GET_ESTIMATED_PARTITIONS"},
{REPAIR_SET_ESTIMATED_PARTITIONS, "REPAIR_SET_ESTIMATED_PARTITIONS"},
{REPAIR_GET_DIFF_ALGORITHMS, "REPAIR_GET_DIFF_ALGORITHMS"},
{REPAIR_GET_ROW_DIFF_WITH_RPC_STREAM, "REPAIR_GET_ROW_DIFF_WITH_RPC_STREAM"},
{REPAIR_PUT_ROW_DIFF_WITH_RPC_STREAM, "REPAIR_PUT_ROW_DIFF_WITH_RPC_STREAM"},
{REPAIR_GET_FULL_ROW_HASHES_WITH_RPC_STREAM, "REPAIR_GET_FULL_ROW_HASHES_WITH_RPC_STREAM"},
{PAXOS_PREPARE, "PAXOS_PREPARE"},
{PAXOS_ACCEPT, "PAXOS_ACCEPT"},
{PAXOS_LEARN, "PAXOS_LEARN"},
{HINT_MUTATION, "HINT_MUTATION"},
{PAXOS_PRUNE, "PAXOS_PRUNE"},
{0, NULL}
};
static gboolean
looks_like_rpc_negotiation(tvbuff_t *tvb, const gint offset) {
return tvb_memeql(tvb, offset, (const guint8 *)"SSTARRPC", 8) == 0;
}
static gboolean
looks_like_response(guint64 verb_type, guint32 len) {
return verb_type >= LAST || len > 64*1024*1024;
}
typedef struct {
guint64 verb_type;
guint32 request_frame_num;
guint32 response_frame_num;
} request_response_t;
static guint
get_scylla_pdu_len(packet_info *pinfo _U_, tvbuff_t *tvb, int offset, void *data _U_)
{
guint64 verb_type = LAST;
guint32 plen = 0;
if (looks_like_rpc_negotiation(tvb, offset)) {
return tvb_get_letohl(tvb, offset + SCYLLA_NEGOTIATION_LEN_OFFSET) + SCYLLA_NEGOTIATION_SIZE;
}
if (tvb_reported_length(tvb) >= SCYLLA_HEADER_SIZE) {
plen = tvb_get_letohl(tvb, offset + SCYLLA_HEADER_LEN_OFFSET);
verb_type = tvb_get_letoh64(tvb, offset + SCYLLA_HEADER_VERB_OFFSET);
}
if (looks_like_response(verb_type, plen)) {
return tvb_get_letohl(tvb, offset + SCYLLA_RESPONSE_LEN_OFFSET) + SCYLLA_RESPONSE_SIZE;
}
return plen + SCYLLA_HEADER_SIZE;
}
static int
dissect_scylla_negotiation_pdu(tvbuff_t *tvb, packet_info *pinfo, proto_tree *scylla_tree)
{
gint offset = 0;
guint32 len = tvb_get_letohl(tvb, offset + SCYLLA_NEGOTIATION_LEN_OFFSET) + SCYLLA_NEGOTIATION_SIZE;
proto_tree *scylla_negotiation_tree = proto_tree_add_subtree(scylla_tree, tvb, offset,
len, ett_scylla_negotiation, NULL, "Protocol negotiation");
proto_tree_add_item(scylla_negotiation_tree, hf_scylla_negotiation_magic, tvb, offset, 8, ENC_ASCII|ENC_NA);
gint negotiation_offset = 8;
proto_tree_add_item(scylla_negotiation_tree, hf_scylla_negotiation_size, tvb, offset + negotiation_offset, 4, ENC_LITTLE_ENDIAN);
negotiation_offset += 4;
proto_tree_add_item(scylla_negotiation_tree, hf_scylla_payload, tvb, offset + negotiation_offset, len - negotiation_offset, ENC_NA);
col_set_str(pinfo->cinfo, COL_PROTOCOL, "Scylla");
col_set_str(pinfo->cinfo, COL_INFO, "Protocol negotiation");
return tvb_reported_length(tvb);
}
static int
dissect_scylla_response_pdu(tvbuff_t *tvb, packet_info *pinfo, proto_tree *scylla_tree, request_response_t *req_resp)
{
gint offset = 0;
guint32 len = tvb_get_letohl(tvb, offset + SCYLLA_RESPONSE_LEN_OFFSET) + SCYLLA_RESPONSE_SIZE;
/* Add response subtree */
proto_item *response_ti = proto_tree_add_string_format(scylla_tree, hf_scylla_response,
tvb, offset, len, "", "Response");
proto_tree *scylla_response_tree = proto_item_add_subtree(response_ti, ett_scylla_response);
gint resp_offset = 0;
guint64 msg_id;
proto_tree_add_item_ret_uint64(scylla_response_tree, hf_scylla_msg_id, tvb, offset + resp_offset, 8, ENC_LITTLE_ENDIAN, &msg_id);
resp_offset += 8;
proto_tree_add_item(scylla_response_tree, hf_scylla_response_size, tvb, offset + resp_offset, 4, ENC_LITTLE_ENDIAN);
resp_offset += 4;
proto_tree_add_item(scylla_response_tree, hf_scylla_payload, tvb, offset + resp_offset, len - resp_offset, ENC_NA);
col_set_str(pinfo->cinfo, COL_PROTOCOL, "Scylla");
if (req_resp) {
/* Fill in the response frame */
req_resp->response_frame_num = pinfo->num;
proto_item *verb_item = proto_tree_add_uint64(scylla_response_tree, hf_scylla_verb, tvb, offset + len, 8, req_resp->verb_type);
proto_item_set_generated(verb_item);
proto_item *req = proto_tree_add_uint(scylla_tree, hf_scylla_response_request_frame, tvb, 0, 0, req_resp->request_frame_num);
proto_item_set_generated(req);
proto_item_append_text(response_ti, " (msg_id=%" G_GINT64_MODIFIER "u, %s)",
msg_id, val64_to_str(req_resp->verb_type, packettypenames, "Unknown (0x%02x)"));
col_clear(pinfo->cinfo, COL_INFO);
col_add_fstr(pinfo->cinfo, COL_INFO, "Response for %s",
val64_to_str(req_resp->verb_type, packettypenames, "Unknown (0x%02x)"));
} else {
col_set_str(pinfo->cinfo, COL_INFO, "Response for unknown packet");
}
return tvb_reported_length(tvb);
}
static int
dissect_scylla_msg_pdu(tvbuff_t *tvb, packet_info *pinfo, proto_tree *scylla_tree, proto_item *ti, guint64 verb_type, guint32 len, request_response_t *req_resp)
{
gint offset = 0;
/* Add request subtree */
proto_item *request_ti = proto_tree_add_string_format(scylla_tree, hf_scylla_request,
tvb, offset, SCYLLA_HEADER_SIZE,
"", "Header for %s",
val64_to_str(verb_type, packettypenames, "Unknown (0x%02x)"));
proto_tree *scylla_header_tree = proto_item_add_subtree(request_ti, ett_scylla_response);
proto_tree_add_item(scylla_header_tree, hf_scylla_timeout, tvb, offset, 8, ENC_LITTLE_ENDIAN);
offset += 8;
proto_item_append_text(ti, ", Type %s", val64_to_str(verb_type, packettypenames, "Unknown (0x%02x)"));
proto_tree_add_item(scylla_header_tree, hf_scylla_verb, tvb, offset, 8, ENC_LITTLE_ENDIAN);
offset += 8;
guint64 msg_id;
proto_tree_add_item_ret_uint64(scylla_header_tree, hf_scylla_msg_id, tvb, offset, 8, ENC_LITTLE_ENDIAN, &msg_id);
offset += 8;
proto_tree_add_item(scylla_header_tree, hf_scylla_len, tvb, offset, 4, ENC_LITTLE_ENDIAN);
offset += 4;
proto_item_append_text(request_ti, " (msg_id=%" G_GINT64_MODIFIER "u)", msg_id);
switch (verb_type) {
case MUTATION: {
proto_tree* scylla_mut_tree = proto_tree_add_subtree(scylla_tree, tvb, offset,
len, ett_scylla_mut, NULL, "Mutation");
gint mut_offset = 0;
guint32 len_keys;
guint32 num_keys;
proto_tree_add_item(scylla_mut_tree, hf_scylla_mut_size1, tvb, offset + mut_offset, 4, ENC_LITTLE_ENDIAN);
mut_offset += 4;
proto_tree_add_item(scylla_mut_tree, hf_scylla_mut_size2, tvb, offset + mut_offset, 4, ENC_LITTLE_ENDIAN);
mut_offset += 4;
proto_tree_add_item(scylla_mut_tree, hf_scylla_mut_table_id, tvb, offset + mut_offset, 16, ENC_NA);
mut_offset += 16;
proto_tree_add_item(scylla_mut_tree, hf_scylla_mut_schema_id, tvb, offset + mut_offset, 16, ENC_NA);
mut_offset += 16;
proto_tree_add_item_ret_uint(scylla_mut_tree, hf_scylla_mut_len_pkeys, tvb, offset + mut_offset, 4, ENC_LITTLE_ENDIAN, &len_keys);
mut_offset += 4;
proto_tree* scylla_mut_pkey_tree = proto_tree_add_subtree(scylla_mut_tree, tvb, offset + mut_offset,
len - mut_offset, ett_scylla_mut_pkey, NULL, "Partition key");
proto_tree_add_item_ret_uint(scylla_mut_pkey_tree, hf_scylla_mut_num_pkeys, tvb, offset + mut_offset, 4, ENC_LITTLE_ENDIAN, &num_keys);
mut_offset += 4;
guint i;
for (i = 0; i < num_keys; ++i) {
guint32 len_pkey = tvb_get_letohl(tvb, offset + mut_offset);
proto_tree_add_item(scylla_mut_pkey_tree, hf_scylla_mut_len_pkey, tvb, offset + mut_offset, 4, ENC_LITTLE_ENDIAN);
mut_offset += 4;
proto_tree_add_item(scylla_mut_pkey_tree, hf_scylla_mut_pkey, tvb, offset + mut_offset, len_pkey, ENC_NA);
mut_offset += len_pkey;
}
// TODO: dissect further
proto_tree_add_item(scylla_mut_tree, hf_scylla_payload, tvb, offset + mut_offset, len - mut_offset, ENC_NA);
}
break;
case READ_DATA: {
proto_tree* scylla_read_tree = proto_tree_add_subtree(scylla_tree, tvb, offset,
len, ett_scylla_read_data, NULL, "Read data");
gint rd_offset = 0;
proto_tree_add_item(scylla_read_tree, hf_scylla_read_data_timeout, tvb, offset + rd_offset, 4, ENC_LITTLE_ENDIAN);
rd_offset += 4;
proto_tree_add_item(scylla_read_tree, hf_scylla_read_data_table_id, tvb, offset + rd_offset, 16, ENC_NA);
rd_offset += 16;
proto_tree_add_item(scylla_read_tree, hf_scylla_read_data_schema_version, tvb, offset + rd_offset, 16, ENC_NA);
rd_offset += 16;
//TODO: dissect further
proto_tree_add_item(scylla_read_tree, hf_scylla_payload, tvb, offset + rd_offset, len - rd_offset, ENC_NA);
}
break;
default:
// Generic payload. TODO: dissect
proto_tree_add_item(scylla_tree, hf_scylla_payload, tvb, offset, len, ENC_NA);
break;
}
/* req_resp will only be set if fd was already visited (PINFO_FD_VISITED(pinfo)) */
if (req_resp) {
if (req_resp->response_frame_num > 0) {
proto_item *rep = proto_tree_add_uint(scylla_tree, hf_scylla_request_response_frame, tvb, 0, 0, req_resp->response_frame_num);
proto_item_set_generated(rep);
} else {
expert_add_info(pinfo, request_ti, &ei_scylla_response_missing);
}
}
col_set_str(pinfo->cinfo, COL_PROTOCOL, "Scylla");
col_clear(pinfo->cinfo, COL_INFO);
col_add_fstr(pinfo->cinfo, COL_INFO, "Request %s",
val64_to_str(verb_type, packettypenames, "Unknown (0x%02x)"));
return tvb_reported_length(tvb);
}
static gboolean
response_expected(guint64 verb_type)
{
switch (verb_type) {
case GOSSIP_DIGEST_SYN:
case GOSSIP_DIGEST_ACK:
case GOSSIP_DIGEST_ACK2:
case GOSSIP_SHUTDOWN:
case DEFINITIONS_UPDATE:
case MUTATION:
case MUTATION_DONE:
case MUTATION_FAILED:
case HINT_MUTATION:
case PAXOS_LEARN:
case PAXOS_PRUNE:
return FALSE;
default:
return TRUE;
}
}
static int
dissect_scylla_pdu(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
gint offset = 0;
conversation_t *conversation;
wmem_map_t *conv_map;
proto_item *ti = proto_tree_add_item(tree, proto_scylla, tvb, 0, -1, ENC_NA);
proto_tree *scylla_tree = proto_item_add_subtree(ti, ett_scylla);
guint64 verb_type = LAST;
guint32 len = 0;
if (looks_like_rpc_negotiation(tvb, offset)) {
return dissect_scylla_negotiation_pdu(tvb, pinfo, scylla_tree);
}
if (tvb_reported_length(tvb) >= SCYLLA_HEADER_SIZE) {
verb_type = tvb_get_letoh64(tvb, offset + SCYLLA_HEADER_VERB_OFFSET);
len = tvb_get_letohl(tvb, offset + SCYLLA_HEADER_LEN_OFFSET);
}
conversation = find_or_create_conversation(pinfo);
conv_map = (wmem_map_t *)conversation_get_proto_data(conversation, proto_scylla);
if (conv_map == NULL) {
conv_map = wmem_map_new(wmem_file_scope(), wmem_int64_hash, g_int64_equal);
conversation_add_proto_data(conversation, proto_scylla, conv_map);
}
if (looks_like_response(verb_type, len)) {
void *req_resp;
guint64 msg_id;
msg_id = tvb_get_letoh64(tvb, offset + SCYLLA_RESPONSE_MSG_ID_OFFSET);
req_resp = wmem_map_lookup(conv_map, &msg_id);
return dissect_scylla_response_pdu(tvb, pinfo, scylla_tree, (request_response_t *)req_resp);
}
guint64 msg_id = tvb_get_letoh64(tvb, offset + SCYLLA_HEADER_MSG_ID_OFFSET);
void *req_resp = NULL;
if (response_expected(verb_type)) {
if (!PINFO_FD_VISITED(pinfo)) {
guint64 *key = wmem_new(wmem_file_scope(), guint64);
request_response_t *val = wmem_new(wmem_file_scope(), request_response_t);
*key = msg_id;
val->verb_type = verb_type;
val->request_frame_num = pinfo->num;
wmem_map_insert(conv_map, key, val);
} else {
req_resp = wmem_map_lookup(conv_map, &msg_id);
}
}
return dissect_scylla_msg_pdu(tvb, pinfo, scylla_tree, ti, verb_type, len, (request_response_t *)req_resp);
}
static int
dissect_scylla(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data)
{
tcp_dissect_pdus(tvb, pinfo, tree, scylla_desegment, SCYLLA_NEGOTIATION_SIZE,
get_scylla_pdu_len, dissect_scylla_pdu, data);
return tvb_reported_length(tvb);
}
void
proto_register_scylla(void)
{
static hf_register_info hf[] = {
// RPC header
{ &hf_scylla_request, { "request", "scylla.request", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL } },
{ &hf_scylla_request_response_frame, { "Response frame", "scylla.request.response", FT_FRAMENUM, BASE_NONE, FRAMENUM_TYPE(FT_FRAMENUM_RESPONSE), 0x0, NULL, HFILL } },
{ &hf_scylla_timeout, { "RPC timeout", "scylla.timeout", FT_UINT64, BASE_DEC, NULL, 0x0, NULL, HFILL } },
{ &hf_scylla_verb, { "verb", "scylla.verb", FT_UINT64, BASE_DEC|BASE_VAL64_STRING, VALS64(packettypenames), 0x0, NULL, HFILL } },
{ &hf_scylla_msg_id, { "msg id", "scylla.msg_id", FT_UINT64, BASE_DEC, NULL, 0x0, NULL, HFILL } },
{ &hf_scylla_len, { "packet length", "scylla.len", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL } },
{ &hf_scylla_payload, { "payload", "scylla.payload", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } },
{ &hf_scylla_response, { "response", "scylla.response", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL } },
{ &hf_scylla_response_size, { "response size", "scylla.response.size", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL } },
{ &hf_scylla_response_request_frame, { "Request frame", "scylla.response.request", FT_FRAMENUM, BASE_NONE, FRAMENUM_TYPE(FT_FRAMENUM_REQUEST), 0x0, NULL, HFILL } },
{ &hf_scylla_negotiation_magic, { "negotiation magic sequence", "scylla.negotiation.magic", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL } },
{ &hf_scylla_negotiation_size, { "negotiation size", "scylla.negotiation.size", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL } },
// mutation verb
{ &hf_scylla_mut_size1, { "mutation size 1", "scylla.mut.size1", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL } },
{ &hf_scylla_mut_size2, { "mutation size 2", "scylla.mut.size2", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL } },
{ &hf_scylla_mut_table_id, { "mutation table id", "scylla.mut.table_id", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } },
{ &hf_scylla_mut_schema_id, { "mutation schema id", "scylla.mut.schema_id", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } },
{ &hf_scylla_mut_len_pkeys, { "size of partition keys payload", "scylla.mut.len_pkeys", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL } },
{ &hf_scylla_mut_num_pkeys, { "number of partition keys", "scylla.mut.num_pkeys", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL } },
{ &hf_scylla_mut_len_pkey, { "length of a partition key", "scylla.mut.len_pkey", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL } },
{ &hf_scylla_mut_pkey, { "partition key", "scylla.mut.pkey", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } },
// read_data verb
{ &hf_scylla_read_data_timeout, { "timeout", "scylla.read_data.timeout", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL } },
{ &hf_scylla_read_data_table_id, { "table ID", "scylla.read_data.table_id", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } },
{ &hf_scylla_read_data_schema_version, { "Schema version", "scylla.read_data.schema_version", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } },
};
static ei_register_info ei[] = {
{ &ei_scylla_response_missing,
{ "scylla.ei_scylla_response_missing",
PI_COMMENTS_GROUP, PI_NOTE, "Response has not arrived yet", EXPFILL }},
};
/* Setup protocol subtree array */
static gint *ett[] = {
&ett_scylla,
&ett_scylla_header,
&ett_scylla_response,
&ett_scylla_negotiation,
&ett_scylla_mut,
&ett_scylla_mut_pkey,
&ett_scylla_read_data,
};
expert_module_t* expert_scylla;
proto_scylla = proto_register_protocol("Scylla RPC protocol", "Scylla", "scylla");
module_t* scylla_module = prefs_register_protocol(proto_scylla, NULL);
prefs_register_bool_preference(scylla_module, "desegment",
"Desegment all Scylla messages spanning multiple TCP segments",
"Whether Scylla dissector should desegment all messages spanning multiple TCP segments",
&scylla_desegment);
proto_register_field_array(proto_scylla, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
expert_scylla = expert_register_protocol(proto_scylla);
expert_register_field_array(expert_scylla, ei, array_length(ei));
}
void
proto_reg_handoff_scylla(void)
{
static dissector_handle_t scylla_handle;
scylla_handle = create_dissector_handle(dissect_scylla, proto_scylla);
dissector_add_uint_with_preference("tcp.port", SCYLLA_PORT, scylla_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:
*/
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