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wireshark/epan/dissectors/packet-hdfsdata.c

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/* packet-hdfsdata.c
* HDFS data Protocol and dissectors
*
* Copyright (c) 2011 by Isilon Systems.
*
* Author: Allison Obourn <aobourn@isilon.com>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1999 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "config.h"
#include <epan/packet.h>
#include "packet-tcp.h"
void proto_register_hdfsdata(void);
void proto_reg_handoff_hdfsdata(void);
#if 0
#define NAMENODE_PORT 8020
#define DATANODE_PORT 8021
#endif
#define FIRST_READ_FRAGMENT_LEN 15
#define SECOND_READ_FRAGMENT_LEN 29
#define LAST_READ_FRAGMENT_LEN 4
#define WRITE_OP 80
#define READ_OP 81
#define MIN_WRITE_REQ 35
#define MIN_READ_REQ 36
#define STATUS_SUCCESS 6
#define PIPELINE_LEN 1
#define STATUS_LEN 2
#define FINISH_REQ_LEN 4
#define END_PACKET_LEN 8
#define READ_RESP_HEAD_LEN 19
#define WRITE_RESP_HEAD_LEN 21
#define WRITE_REQ_HEAD_LEN 7
#define CRC 1
#define CRC_SIZE 8.0
#define CHUNKSIZE_START 3
#if 0
static const int RESPONSE_HEADER = 1;
static const int RESPONSE_METADATA = 2;
static const int RESPONSE_DATA = 3;
#endif
static int proto_hdfsdata = -1;
static int hf_hdfsdata_version = -1;
static int hf_hdfsdata_cmd = -1;
static int hf_hdfsdata_blockid = -1;
static int hf_hdfsdata_timestamp = -1;
static int hf_hdfsdata_startoffset = -1;
static int hf_hdfsdata_blocklen = -1;
static int hf_hdfsdata_clientlen = -1;
static int hf_hdfsdata_clientid = -1;
static int hf_hdfsdata_tokenlen = -1;
static int hf_hdfsdata_tokenid = -1;
static int hf_hdfsdata_tokenpassword = -1;
static int hf_hdfsdata_tokentype = -1;
static int hf_hdfsdata_tokenservice = -1;
static int hf_hdfsdata_status = -1;
static int hf_hdfsdata_checksumtype = -1;
static int hf_hdfsdata_chunksize = -1;
static int hf_hdfsdata_chunkoffset = -1;
static int hf_hdfsdata_datalength = -1;
static int hf_hdfsdata_inblockoffset = -1;
static int hf_hdfsdata_seqnum = -1;
static int hf_hdfsdata_last = -1;
static int hf_hdfsdata_crc32 = -1;
static int hf_hdfsdata_datalen = -1;
static int hf_hdfsdata_rest = -1;
static int hf_hdfsdata_end = -1;
static int hf_hdfsdata_packetsize = -1;
static int hf_hdfsdata_chunklength = -1;
static int hf_hdfsdata_crc64 = -1;
static int hf_hdfsdata_pipelinestatus = -1;
static int hf_hdfsdata_pipelinenum = -1;
static int hf_hdfsdata_recovery = -1;
static int hf_hdfsdata_sourcenode = -1;
static int hf_hdfsdata_currentpipeline = -1;
static int hf_hdfsdata_node = -1;
static gint ett_hdfsdata = -1;
static dissector_handle_t hdfsdata_handle;
/* Taken from HDFS
Parse the first byte of a vint/vlong to determine the number of bytes
value is the first byte of the vint/vlong
returns the total number of bytes (1 to 9) */
static int
decode_vint_size (gint8 value) {
if (value >= -112) {
return 1;
} else if (value < -120) {
return -119 - value;
}
return -111 - value;
}
/* Taken from HDFS
converts a variable length number into a long and discovers how many bytes it is
returns the decoded number */
static guint
dissect_variable_length_long (tvbuff_t *tvb, proto_tree *hdfsdata_tree, int* offset)
{
int byte_count = 1;
int idx = 0;
guint i = 0;
gint8 first_byte = tvb_get_guint8(tvb, *offset);
guint size = 0;
int len = decode_vint_size(first_byte);
if (len == 1) {
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_clientlen, tvb, *offset, byte_count, ENC_BIG_ENDIAN);
*offset = (*offset) + byte_count;
return first_byte;
}
for (idx = 0; idx < len-1; idx++) {
char b = tvb_get_guint8(tvb, *offset + byte_count);
byte_count++;
i = i << 8;
i = i | (b & 0xFF);
}
size = ((first_byte < -120 || (first_byte >= -112 && first_byte < 0)) ? (i ^ 0xFFFFFFFF) : i);
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_clientlen, tvb, *offset, byte_count, ENC_BIG_ENDIAN);
*offset = (*offset) + byte_count;
return size;
}
/* dissects a variable length int and then using its value dissects the following string */
static void
dissect_variable_int_string(tvbuff_t *tvb, proto_tree *hdfsdata_tree, int *offset)
{
/* Get the variable length int that represents the length of the next feild */
int len = dissect_variable_length_long (tvb, hdfsdata_tree, offset);
/* client id = amount of bytes in previous */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_clientid, tvb, *offset, len, ENC_ASCII|ENC_NA);
*offset += len;
}
/* dissects the access tokens that appear at the end of requests.
tokens: id, password, kind, service */
static void
dissect_access_tokens(tvbuff_t *tvb, proto_tree *hdfsdata_tree, int *offset)
{
int len = 0;
len = tvb_get_guint8(tvb, *offset);
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_tokenlen, tvb, *offset, 1, ENC_BIG_ENDIAN);
*offset += 1;
/* token id = amount of bytes in previous */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_tokenid, tvb, *offset, len, ENC_ASCII|ENC_NA);
*offset += len;
len = tvb_get_guint8(tvb, *offset);
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_tokenlen, tvb, *offset, 1, ENC_BIG_ENDIAN);
*offset += 1;
/* token password = amount of bytes in previous */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_tokenpassword, tvb, *offset, len, ENC_ASCII|ENC_NA);
*offset += len;
len = tvb_get_guint8(tvb, *offset);
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_tokenlen, tvb, *offset, 1, ENC_BIG_ENDIAN);
*offset += 1;
/* token type = amount of bytes in previous */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_tokentype, tvb, *offset, len, ENC_ASCII|ENC_NA);
*offset += len;
len = tvb_get_guint8(tvb, *offset);
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_tokenlen, tvb, *offset, 1, ENC_BIG_ENDIAN);
*offset += 1;
/* token service = amount of bytes in previous; */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_tokenservice, tvb, *offset, len, ENC_ASCII|ENC_NA);
*offset += len;
}
/* handles parsing read response packets */
static void
dissect_read_response(tvbuff_t *tvb, proto_tree *hdfsdata_tree, int offset)
{
int len = 0;
guint32 chunksize;
/* 4 bytes = data length */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_datalength, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
/* 8 bytes = in block offset */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_inblockoffset, tvb, offset, 8, ENC_BIG_ENDIAN);
offset += 8;
/* 8 bytes = sequence number */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_seqnum, tvb, offset, 8, ENC_BIG_ENDIAN);
offset += 8;
/* 1 byte = last packet in block */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_last, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
/* 4 byte = length of data */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_datalen, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
/* if there is a crc checksum it is 8* the length of the data * checksum size / chunksize */
chunksize = tvb_get_ntohl(tvb, CHUNKSIZE_START);
if (chunksize == 0) /* let's not divide by zero */
return;
if (tvb_get_guint8(tvb, 2) == CRC) {
len = (int)(CRC_SIZE * tvb_get_ntohl(tvb, offset - 4) *
tvb_get_ntohl(tvb, offset - 8) / chunksize);
}
/* the rest of bytes (usually 4) = crc32 code */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_crc32, tvb, offset, len, ENC_BIG_ENDIAN);
/* offset += len; */
}
/* dissects the first packet of the read response */
static void
dissect_read_response_start(tvbuff_t *tvb, proto_tree *hdfsdata_tree, int offset) {
/* 2 bytes = status code */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_status, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
/* checksum type = 1 byte. 1 = crc32, 0 = null */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_checksumtype, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
/* 4 bytes = chunksize */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_chunksize, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
/* 8 bytes = chunk offset */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_chunkoffset, tvb, offset, 8, ENC_BIG_ENDIAN);
/* offset += 8; */
}
/* dissects the fields specific to a read request */
static void
dissect_read_request(tvbuff_t *tvb, proto_tree *hdfsdata_tree, int *offset)
{
/* 8 bytes = start offset */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_startoffset, tvb, *offset, 8, ENC_BIG_ENDIAN);
*offset += 8;
/* 8 bytes = block length */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_blocklen, tvb, *offset, 8, ENC_BIG_ENDIAN);
*offset += 8;
}
/* dissects the fields specific to a write request */
static void
dissect_write_request(tvbuff_t *tvb, proto_tree *hdfsdata_tree, int *offset)
{
/* 4 bytes = number of nodes in pipeline */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_pipelinenum, tvb, *offset, 4, ENC_BIG_ENDIAN);
*offset += 4;
/* 1 bytes = recovery boolean */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_recovery, tvb, *offset, 1, ENC_BIG_ENDIAN);
*offset += 1;
}
/* dissects the fields specific to a write request */
static void
dissect_write_request_end(tvbuff_t *tvb, proto_tree *hdfsdata_tree, int *offset)
{
int i = 0;
int len = 0;
/* 1 bytes = source node */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_sourcenode, tvb, *offset, 1, ENC_BIG_ENDIAN);
*offset += 1;
/* 4 bytes = number of nodes currently in the pipeline (usually just -1 of before) */
len = tvb_get_ntohl(tvb, *offset);
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_currentpipeline, tvb, *offset, 4, ENC_BIG_ENDIAN);
*offset += 4;
/* varible length sequence of node objects */
for (i = 0; i < len; i++) {
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_node, tvb, *offset, 4, ENC_BIG_ENDIAN);
*offset += 4;
}
}
/* dissects the beginning of the read and write request messages */
static int
dissect_header(tvbuff_t *tvb, proto_tree *hdfsdata_tree, int* offset){
int command = 0;
/* 2 bytes = protocol version */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_version, tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
/* 1 byte = command */
command = tvb_get_guint8(tvb, *offset);
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_cmd, tvb, *offset, 1, ENC_BIG_ENDIAN);
*offset += 1;
/* 8 bytes = block id */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_blockid, tvb, *offset, 8, ENC_BIG_ENDIAN);
*offset += 8;
/* 8 bytes = timestamp */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_timestamp, tvb, *offset, 8, ENC_BIG_ENDIAN);
*offset += 8;
return command;
}
/* decodes the write response messages */
static void
dissect_write_response(tvbuff_t *tvb, proto_tree *hdfsdata_tree, int offset)
{
/* 4 bytes = packetsize */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_packetsize, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
/* 8 bytes = offset in block */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_startoffset, tvb, offset, 8, ENC_BIG_ENDIAN);
offset += 8;
/* 8 bytes = sequence number */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_seqnum, tvb, offset, 8, ENC_BIG_ENDIAN);
offset += 8;
/* 1 bytes = last packet */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_last, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
/* 4 bytes = chunk length */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_chunklength, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
/* 8 bytes = crc code */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_crc64, tvb, offset, 8, ENC_BIG_ENDIAN);
offset += 8;
/* add the rest -> RESPONSE_DATA */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_rest, tvb, offset, (tvb_reported_length(tvb)) - offset, ENC_ASCII|ENC_NA);
/* offset += (tvb_reported_length(tvb)); */
}
/* determine PDU length of protocol */
static guint
get_hdfsdata_message_len(packet_info *pinfo _U_, tvbuff_t *tvb, int offset, void *data _U_)
{
/* get data packet len, add FIRST_READ_FRAGMENT_LEN for first fragment (before len),
SECOND_READ_FRAGMENT_LEN for second fragment (incl len), subtract 4 for length itself. */
if (tvb_reported_length(tvb) <= 4 || tvb_reported_length(tvb) == END_PACKET_LEN
|| tvb_get_ntohl(tvb, 0) == tvb_reported_length(tvb) - WRITE_RESP_HEAD_LEN
|| (tvb_reported_length(tvb) >= MIN_READ_REQ && tvb_get_guint8(tvb, 2) == READ_OP)
|| (tvb_reported_length(tvb) >= MIN_WRITE_REQ && tvb_get_guint8(tvb, 2) == WRITE_OP)) {
return tvb_reported_length(tvb);
}
return tvb_get_ntohl(tvb, offset + FIRST_READ_FRAGMENT_LEN) +
FIRST_READ_FRAGMENT_LEN + SECOND_READ_FRAGMENT_LEN - LAST_READ_FRAGMENT_LEN;
}
/* This method dissects fully reassembled messages */
static int
dissect_hdfsdata_message(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
int offset = 0;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "HDFSDATA");
/* Clear out stuff in the info column */
col_set_str(pinfo->cinfo, COL_INFO, "HDFS Data");
if (tree) {
proto_item *ti = NULL;
proto_tree *hdfsdata_tree = NULL;
ti = proto_tree_add_item(tree, proto_hdfsdata, tvb, offset, -1, ENC_NA);
hdfsdata_tree = proto_item_add_subtree(ti, ett_hdfsdata);
/* if only 1 bytes packet must just contain just the pipeline status */
if ((tvb_reported_length(tvb)) == PIPELINE_LEN) {
/* 1 bytes = pipeline status */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_pipelinestatus, tvb, offset, PIPELINE_LEN, ENC_BIG_ENDIAN);
/* if only 2 bytes packet must just contain just a status code */
} else if ((tvb_reported_length(tvb)) == STATUS_LEN) {
/* 2 bytes = status code */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_status, tvb, offset, STATUS_LEN, ENC_BIG_ENDIAN);
/* if it is 4 bytes long it must be a finish request packet */
} else if ((tvb_reported_length(tvb)) == FINISH_REQ_LEN) {
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_end, tvb, offset, 4, ENC_BIG_ENDIAN);
/* read response packet */
} else if (tvb_reported_length(tvb) >= READ_RESP_HEAD_LEN && tvb_reported_length(tvb) ==
tvb_get_ntohl(tvb, FIRST_READ_FRAGMENT_LEN) +
FIRST_READ_FRAGMENT_LEN + SECOND_READ_FRAGMENT_LEN - LAST_READ_FRAGMENT_LEN){
dissect_read_response_start(tvb, hdfsdata_tree, offset);
offset += FIRST_READ_FRAGMENT_LEN;
dissect_read_response(tvb, hdfsdata_tree, offset);
offset+= SECOND_READ_FRAGMENT_LEN;
/* This message just contains data so we can display it all as one block */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_rest, tvb, offset, (tvb_reported_length(tvb)) - offset, ENC_ASCII|ENC_NA);
} else {
guint8 op = tvb_get_guint8(tvb, 2);
/* READ request */
if ((tvb_reported_length(tvb)) >= MIN_READ_REQ && op == READ_OP) {
dissect_header(tvb, hdfsdata_tree, &offset);
dissect_read_request(tvb, hdfsdata_tree, &offset);
dissect_variable_int_string(tvb, hdfsdata_tree, &offset);
dissect_access_tokens(tvb, hdfsdata_tree, &offset);
/* WRITE request */
} else if ((tvb_reported_length(tvb)) >= MIN_WRITE_REQ && op == WRITE_OP) {
dissect_header(tvb, hdfsdata_tree, &offset);
dissect_write_request(tvb, hdfsdata_tree, &offset);
dissect_variable_int_string(tvb, hdfsdata_tree, &offset);
dissect_write_request_end(tvb, hdfsdata_tree, &offset);
dissect_access_tokens(tvb, hdfsdata_tree, &offset);
/* checksum type = 1 byte. 1 = crc32, 0 = null */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_checksumtype, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
/* 4 bytes = chunksize */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_chunksize, tvb, offset, 4, ENC_BIG_ENDIAN);
/* write responses store the data length in the first 4 bytes. This length does not
include 21 bits of header */
} else if (tvb_reported_length(tvb) >= 4 && tvb_get_ntohl(tvb, 0) ==
tvb_reported_length(tvb) - WRITE_RESP_HEAD_LEN) {
dissect_write_response(tvb, hdfsdata_tree, offset);
} else {
/* This message contains some form of data that we have not successfully been able to
pattern match and catagorize. Display all of it as data. */
proto_tree_add_item(hdfsdata_tree, hf_hdfsdata_rest, tvb, offset, (tvb_reported_length(tvb)), ENC_ASCII|ENC_NA);
}
}
}
return tvb_captured_length(tvb);
}
static int
dissect_hdfsdata(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data)
{
int frame_header_len = 0;
gboolean need_reassemble = FALSE;
guint8 op = 0;
gboolean only_packet = tvb_reported_length(tvb) == 1 || (tvb_reported_length(tvb) == 2 &&
tvb_get_ntohs(tvb, 0) == STATUS_SUCCESS);
if (tvb_reported_length(tvb) >= 3)
op = tvb_get_guint8(tvb, 2);
if (!only_packet && tvb_reported_length(tvb) != 4 && !(tvb_reported_length(tvb) >= MIN_READ_REQ && op == READ_OP) &&
!(tvb_reported_length(tvb) >= MIN_WRITE_REQ && op == WRITE_OP) && !(tvb_reported_length(tvb) == END_PACKET_LEN &&
!tvb_get_ntohl(tvb, 0) && !tvb_get_ntohl(tvb, 4))) {
need_reassemble = TRUE;
}
/* setting the header size for the different types of packets */
if (only_packet || tvb_reported_length(tvb) == END_PACKET_LEN) {
frame_header_len = tvb_reported_length(tvb);
} else if (tvb_reported_length(tvb) == FIRST_READ_FRAGMENT_LEN ||(tvb_reported_length(tvb) >= MIN_READ_REQ &&
op == READ_OP && !((tvb_reported_length(tvb)) == 2 && !tvb_get_ntohs(tvb, 0)))) {
frame_header_len = READ_RESP_HEAD_LEN;
} else if (tvb_reported_length(tvb) >= MIN_WRITE_REQ && op == WRITE_OP) {
frame_header_len = WRITE_REQ_HEAD_LEN;
}
tcp_dissect_pdus(tvb, pinfo, tree, need_reassemble, frame_header_len, get_hdfsdata_message_len, dissect_hdfsdata_message, data);
return tvb_captured_length(tvb);
}
/* registers the protcol with the given names */
void
proto_register_hdfsdata(void)
{
static hf_register_info hf[] = {
/* list of all options for dissecting the protocol */
/*************************************************
Read request
**************************************************/
{ &hf_hdfsdata_version,
{ "HDFSDATA protocol version", "hdfsdata.version",
FT_UINT16, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfsdata_cmd,
{ "HDFSDATA command", "hdfsdata.cmd",
FT_UINT8, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfsdata_blockid,
{ "HDFSDATA block id", "hdfsdata.blockid",
FT_UINT64, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfsdata_timestamp,
{ "HDFSDATA timestamp", "hdfsdata.timestamp",
FT_UINT64, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
/***
Read specific
***/
{ &hf_hdfsdata_startoffset,
{ "HDFSDATA start offset" , "hdfsdata.startoffset",
FT_UINT64, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfsdata_blocklen,
{ "HDFSDATA block length", "hdfsdata.blocklen",
FT_UINT64, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
/***
Write specific
***/
{ &hf_hdfsdata_pipelinenum,
{ "HDFSDATA number in pipeline", "hdfsdata.pipelinenum",
FT_UINT32, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfsdata_recovery,
{ "HDFSDATA recovery boolean", "hdfsdata.recovery",
FT_UINT8, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfsdata_sourcenode,
{ "HDFSDATA source node", "hdfsdata.sourcenode",
FT_UINT8, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfsdata_currentpipeline,
{ "HDFSDATA current number of nodes in the pipeline", "hdfsdata.currentpipline",
FT_UINT32, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfsdata_node,
{ "HDFSDATA node object", "hdfsdata.node",
FT_UINT32, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
/***
Var length
**/
{ &hf_hdfsdata_clientlen,
{ "HDFSDATA client id length", "hdfsdata.clientlen",
FT_UINT8, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfsdata_clientid,
{ "HDFSDATA client id", "hdfsdata.clientid",
FT_STRING, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfsdata_end,
{ "HDFSDATA end data request", "hdfsdata.end",
FT_UINT32, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
/*************************************************
Access tokens
**************************************************/
{ &hf_hdfsdata_tokenlen,
{ "HDFSDATA access token length", "hdfsdata.tokenlen",
FT_UINT8, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfsdata_tokenid,
{ "HDFSDATA access token ID", "hdfsdata.tokenid",
FT_STRING, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfsdata_tokenpassword,
{ "HDFSDATA access token password", "hdfsdata.tokenpassword",
FT_STRING, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfsdata_tokentype,
{ "HDFSDATA access token type", "hdfsdata.tokentype",
FT_STRING, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfsdata_tokenservice,
{ "HDFSDATA access token service", "hdfsdata.tokenservice",
FT_STRING, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
/***********************************************
Responses 1
***********************************************/
{ &hf_hdfsdata_status,
{ "HDFSDATA status code", "hdfsdata.status",
FT_UINT16, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfsdata_checksumtype,
{ "HDFSDATA checksum type", "hdfsdata.checksumtype",
FT_UINT8, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfsdata_chunksize,
{ "HDFSDATA chunk size", "hdfsdata.chunksize",
FT_UINT32, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfsdata_chunkoffset,
{ "HDFSDATA chunk offset", "hdfsdata.chunkoffset",
FT_UINT64, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
/***********************************************
Responses 2
***********************************************/
{ &hf_hdfsdata_datalength,
{ "HDFSDATA length of data", "hdfsdata.datalength",
FT_UINT32, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfsdata_inblockoffset,
{ "HDFSDATA in block offset", "hdfsdata.inblockoffset",
FT_UINT64, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfsdata_seqnum,
{ "HDFSDATA sequence number", "hdfsdata.seqnum",
FT_UINT64, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfsdata_last,
{ "HDFSDATA last packet in block", "hdfsdata.last",
FT_INT8, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfsdata_datalen,
{ "HDFSDATA length of data", "hdfsdata.datalen",
FT_INT32, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfsdata_crc32,
{ "HDFSDATA crc32 checksum", "hdfsdata.crc32",
FT_INT32, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
/***********************************************
Responses 3
***********************************************/
{ &hf_hdfsdata_rest,
{ "HDFSDATA data", "hdfsdata.rest",
FT_STRING, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
/***********************************************
Write Response 1
***********************************************/
{ &hf_hdfsdata_packetsize,
{ "HDFSDATA packet size", "hdfsdata.packetsize",
FT_UINT32, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfsdata_chunklength,
{ "HDFSDATA chunk length", "hdfsdata.chunklength",
FT_UINT32, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfsdata_crc64,
{ "HDFSDATA crc64 checksum", "hdfsdata.crc64",
FT_INT64, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfsdata_pipelinestatus,
{ "HDFSDATA pipeline status", "hdfsdata.pipelinestatus",
FT_INT8, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
};
/* Setup protocol subtree array */
static gint *ett[] = {
&ett_hdfsdata
};
proto_hdfsdata = proto_register_protocol ("HDFSDATA Protocol", "HDFSDATA", "hdfsdata");
proto_register_field_array(proto_hdfsdata, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
hdfsdata_handle = register_dissector("hdfsdata", dissect_hdfsdata, proto_hdfsdata);
}
/* registers handoff */
void
proto_reg_handoff_hdfsdata(void)
{
dissector_add_for_decode_as_with_preference("tcp.port", hdfsdata_handle);
}
/*
* Editor modelines
*
* Local Variables:
* c-basic-offset: 2
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* ex: set shiftwidth=2 tabstop=8 expandtab:
* :indentSize=2:tabSize=8:noTabs=true:
*/
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