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wireshark/epan/dissectors/packet-hdfs.c
Michael Mann 268841f3e0 Combine Decode As and port preferences for tcp.port dissector table. 
This patch introduces new APIs to allow dissectors to have a preference for
a (TCP) port, but the underlying data is actually part of Decode As functionality.
For now the APIs are intentionally separate from the regular APIs that register a
dissector within a dissector table.  It may be possible to eventually combine the
two so that all dissectors that register with a dissector table have an opportunity
to "automatically" have a preference to adjust the "table value" through the
preferences dialog.

The tcp.port dissector table was used as the guinea pig.  This will eventually be
expanded to other dissector tables as well (most notably UDP ports).  Some
dissectors that "shared" a TCP/UDP port preference were also converted. It also
removed the need for some preference callback functions (mostly when the callback
function was the proto_reg_handoff function) so there is cleanup around that.

Dissectors that has a port preference whose default was 0 were switched to using
the dissector_add_for_decode_as_with_preference API rather than dissector_add_uint_with_preference

Also added comments for TCP ports used that aren't IANA registered.

Change-Id: I99604f95d426ad345f4b494598d94178b886eb67
Reviewed-on: https://code.wireshark.org/review/17724
Reviewed-by: Michael Mann <mmann78@netscape.net>
2016-10-08 02:44:53 +00:00

1079 lines
32 KiB
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/* packet-hdfs.c
* HDFS 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
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include <epan/packet.h>
#include <epan/prefs.h>
#include <epan/prefs-int.h>
#include "packet-tcp.h"
void proto_register_hdfs(void);
void proto_reg_handoff_hdfs(void);
#if 0
#define NAMENODE_PORT 8020
#endif
#define REQUEST_STR "hrpc"
#define SEND_DEC 1936027236
#define SEND_OFFSET 13
#define HEAR_DEC 1214603634
#define HEAR_OFFSET 9
#define TBEA_DEC 1952605537
#define TBEA_OFFSET 5
#define T_DEC 116
#define T_OFFSET 1
#define FIRST_READ_FRAGMENT_LEN 15
#define SECOND_READ_FRAGMENT_LEN 29
#if 0
static const int START = 0;
static const int AUTHENTICATION = 1;
static const int DATA = 2;
#endif
static guint tcp_port = 0;
static int proto_hdfs = -1;
static int hf_hdfs_pdu_type = -1;
static int hf_hdfs_flags = -1;
static int hf_hdfs_sequenceno = -1;
static int hf_hdfs_packetno = -1;
static int hf_hdfs_authlen = -1;
static int hf_hdfs_success = -1;
static int hf_hdfs_auth = -1;
static int hf_hdfs_len = -1;
static int hf_hdfs_strcall = -1;
static int hf_hdfs_params = -1;
static int hf_hdfs_paramtype = -1;
static int hf_hdfs_paramval = -1;
static int hf_hdfs_paramvalnum = -1;
/* static int hf_hdfs_rest = -1; */
static int hf_hdfs_fileperm = -1;
static int hf_hdfs_blockloc = -1;
static int hf_hdfs_endblockloc = -1;
static int hf_hdfs_blockgen = -1;
static int hf_hdfs_prover = -1;
static int hf_hdfs_objname = -1;
static int hf_hdfs_filename = -1;
static int hf_hdfs_blockcount = -1;
static int hf_hdfs_ownername = -1;
static int hf_hdfs_groupname = -1;
static int hf_hdfs_namelenone = -1;
static int hf_hdfs_namelentwo = -1;
static int hf_hdfs_accesstime = -1;
static int hf_hdfs_modtime = -1;
static int hf_hdfs_blockrep = -1;
static int hf_hdfs_isdir = -1;
static int hf_hdfs_blocksize = -1;
static int hf_hdfs_filelen = -1;
static int hf_hdfs_construct = -1;
static int hf_hdfs_hostname = -1;
static int hf_hdfs_rackloc = -1;
static int hf_hdfs_adminstate = -1;
static int hf_hdfs_activecon = -1;
static int hf_hdfs_lastupdate = -1;
static int hf_hdfs_remaining = -1;
static int hf_hdfs_dfsused = -1;
static int hf_hdfs_capacity = -1;
static int hf_hdfs_ipcport = -1;
static int hf_hdfs_infoport = -1;
static int hf_hdfs_storageid = -1;
static int hf_hdfs_datanodeid = -1;
static int hf_hdfs_locations = -1;
static int hf_hdfs_offset = -1;
static int hf_hdfs_corrupt = -1;
static int hf_hdfs_identifier = -1;
static int hf_hdfs_password = -1;
static int hf_hdfs_kind = -1;
static int hf_hdfs_service = -1;
static gint ett_hdfs = -1;
static dissector_handle_t hdfs_handle;
/* Parses the parameters of a function.
Parses the type length which is always in 2 bytes.
Next the type which is the previously found length.
If this type is variable length it then reads the length of the data
from 2 bytes and then the data.
Otherwise reads just the data. */
static void
dissect_params (tvbuff_t *tvb, proto_tree *hdfs_tree, guint offset, int params) {
guint length;
int i = 0;
const guint8* type_name;
for (i = 0; i < params; i++) {
/* get length that we just dissected */
length = tvb_get_ntohs(tvb, offset);
/* 2 bytes = parameter type length */
proto_tree_add_item(hdfs_tree, hf_hdfs_namelentwo, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
/* length bytes = parameter type */
proto_tree_add_item(hdfs_tree, hf_hdfs_paramtype, tvb, offset, length, ENC_ASCII|ENC_NA);
offset += length;
if (offset >= length && (!tvb_memeql(tvb, offset - length, "long", length) || !tvb_memeql(tvb, offset - length, "int", length) ||
!tvb_memeql(tvb, offset - length, "short", length) || !tvb_memeql(tvb, offset - length, "char", length) ||
!tvb_memeql(tvb, offset - length, "byte", length) || !tvb_memeql(tvb, offset - length, "float", length)
|| !tvb_memeql(tvb, offset - length, "double", length) || !tvb_memeql(tvb, offset - length, "boolean", length))) {
if (!tvb_memeql(tvb, offset - length, "boolean", length)) {
length = 1;
} else if (!tvb_memeql(tvb, offset - length, "short", length)) {
length = 2;
} else {
length = sizeof(type_name);
}
proto_tree_add_item(hdfs_tree, hf_hdfs_paramvalnum, tvb, offset, length, ENC_BIG_ENDIAN);
offset += length;
} else {
/* get length */
length = tvb_get_ntohs(tvb, offset);
/* 2 bytes = parameter value length */
proto_tree_add_item(hdfs_tree, hf_hdfs_namelentwo, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(hdfs_tree, hf_hdfs_paramval, tvb, offset, length, ENC_ASCII|ENC_NA);
offset += length;
if (!tvb_memeql(tvb, offset - length, "org.apache.hadoop.fs.permission.FsPermission", length)) {
proto_tree_add_item(hdfs_tree, hf_hdfs_fileperm, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
}
}
}
}
/* Dissects a data packet of the form:
method name length : 2B
method name : above value
number of parameters : 4B
-- list of parameters the length of above --
parameter type length : 2B
parameter type : above value
-- if the type is variable size --
parameter value length : 2B
parameter value : above value
-- otherwise --
parameter value : length of the type */
static void
dissect_data (tvbuff_t *tvb, proto_tree *hdfs_tree, guint offset) {
int params = 0;
guint length = 0;
/* get length */
length = tvb_get_ntohs(tvb, offset);
/* method name length = 2 B */
proto_tree_add_item(hdfs_tree, hf_hdfs_namelentwo, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
/* length bytes = method name */
proto_tree_add_item(hdfs_tree, hf_hdfs_strcall, tvb, offset, length, ENC_ASCII|ENC_NA);
offset += length;
/* we only want to parse the packet if it is not a heartbeat (random looking numbers are the decimal
representation of sendHeartbeat */
if (!(tvb_get_ntohl(tvb, offset - SEND_OFFSET) == SEND_DEC && tvb_get_ntohl(tvb, offset - HEAR_OFFSET) == HEAR_DEC &&
tvb_get_ntohl(tvb, offset - TBEA_OFFSET) == TBEA_DEC && tvb_get_guint8(tvb, offset - T_OFFSET) == T_DEC)) {
/* get number of params */
params = tvb_get_ntohl(tvb, offset);
/* 4 bytes = # of parameters */
proto_tree_add_item(hdfs_tree, hf_hdfs_params, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
/* go through all params and dissect their type length, type, value length and value */
dissect_params (tvb, hdfs_tree, offset, params);
}
}
/*
response to a get protocol version message
contains a type length, type name and the value
*/
static int
dissect_resp_long (tvbuff_t *tvb, proto_tree *hdfs_tree, int offset) {
/* get length that we just dissected */
int length = tvb_get_ntohs(tvb, offset);
/* 2 bytes = parameter type length */
proto_tree_add_item(hdfs_tree, hf_hdfs_namelentwo, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
/* length bytes = parameter type */
proto_tree_add_item(hdfs_tree, hf_hdfs_paramtype, tvb, offset, length, ENC_ASCII|ENC_NA);
offset += length;
/* the value */
proto_tree_add_item(hdfs_tree, hf_hdfs_prover, tvb, offset, 8, ENC_BIG_ENDIAN);
offset += 8;
return offset;
}
/*
Response to a file status message
*/
static int
dissect_resp_filestatus (tvbuff_t *tvb, proto_tree *hdfs_tree, int offset) {
int length;
/* file status */
proto_tree_add_item(hdfs_tree, hf_hdfs_fileperm, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
/* get length */
length = tvb_get_ntohs(tvb, offset);
/* 2 bytes = file name length */
proto_tree_add_item(hdfs_tree, hf_hdfs_namelentwo, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
/* file name */
proto_tree_add_item(hdfs_tree, hf_hdfs_filename, tvb, offset, length, ENC_ASCII|ENC_NA);
offset += length;
/* 8 file size / end location */
proto_tree_add_item(hdfs_tree, hf_hdfs_endblockloc, tvb, offset, 8, ENC_BIG_ENDIAN);
offset += 8;
/* is directory */
proto_tree_add_item(hdfs_tree, hf_hdfs_isdir, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
/* block replication factor */
proto_tree_add_item(hdfs_tree, hf_hdfs_blockrep, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
/* block size */
proto_tree_add_item(hdfs_tree, hf_hdfs_blocksize, tvb, offset, 8, ENC_BIG_ENDIAN);
offset += 8;
/* modified time */
proto_tree_add_item(hdfs_tree, hf_hdfs_modtime, tvb, offset, 8, ENC_BIG_ENDIAN);
offset += 8;
/* access time */
proto_tree_add_item(hdfs_tree, hf_hdfs_accesstime, tvb, offset, 8, ENC_BIG_ENDIAN);
offset += 8;
/* 2 of file permissions */
proto_tree_add_item(hdfs_tree, hf_hdfs_fileperm, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
/* get length */
length = tvb_get_guint8 (tvb, offset);
/* owner name length */
proto_tree_add_item(hdfs_tree, hf_hdfs_namelenone, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
/* owner name */
proto_tree_add_item(hdfs_tree, hf_hdfs_ownername, tvb, offset, length, ENC_ASCII|ENC_NA);
offset += length;
/* get length */
length = tvb_get_guint8 (tvb, offset);
/* group name length */
proto_tree_add_item(hdfs_tree, hf_hdfs_namelenone, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
/* group name */
proto_tree_add_item(hdfs_tree, hf_hdfs_groupname, tvb, offset, length, ENC_ASCII|ENC_NA);
offset += length;
return offset;
}
/*
Response to the get block info message
parses the sent back information about each blcok
*/
static int
dissect_block_info (tvbuff_t *tvb, proto_tree *hdfs_tree, int offset) {
int length;
length = tvb_get_guint8(tvb, offset);
/* identifier length */
proto_tree_add_item(hdfs_tree, hf_hdfs_namelenone, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
/* identifier */
proto_tree_add_item(hdfs_tree, hf_hdfs_identifier, tvb, offset, length, ENC_ASCII|ENC_NA);
offset += length;
length = tvb_get_guint8(tvb, offset);
/* password length */
proto_tree_add_item(hdfs_tree, hf_hdfs_namelenone, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
/* password */
proto_tree_add_item(hdfs_tree, hf_hdfs_password, tvb, offset, length, ENC_ASCII|ENC_NA);
offset += length;
length = tvb_get_guint8(tvb, offset);
/* kind length */
proto_tree_add_item(hdfs_tree, hf_hdfs_namelenone, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
/* kind */
proto_tree_add_item(hdfs_tree, hf_hdfs_kind, tvb, offset, length, ENC_ASCII|ENC_NA);
offset += length;
length = tvb_get_guint8(tvb, offset);
/* service length */
proto_tree_add_item(hdfs_tree, hf_hdfs_namelenone, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
/* service */
proto_tree_add_item(hdfs_tree, hf_hdfs_service, tvb, offset, length, ENC_ASCII|ENC_NA);
offset += length;
/* corrupt */
proto_tree_add_item(hdfs_tree, hf_hdfs_corrupt, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
/* offset */
proto_tree_add_item(hdfs_tree, hf_hdfs_offset, tvb, offset, 8, ENC_BIG_ENDIAN);
offset += 8;
/* block info section */
/* block location */
proto_tree_add_item(hdfs_tree, hf_hdfs_blockloc, tvb, offset, 8, ENC_BIG_ENDIAN);
offset += 8;
/* block size */
proto_tree_add_item(hdfs_tree, hf_hdfs_blocksize, tvb, offset, 8, ENC_BIG_ENDIAN);
offset += 8;
/* gen id 8 */
proto_tree_add_item(hdfs_tree, hf_hdfs_blockgen, tvb, offset, 8, ENC_BIG_ENDIAN);
offset += 8;
/* locations */
proto_tree_add_item(hdfs_tree, hf_hdfs_locations, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
/* address section */
/* get length */
length = tvb_get_ntohs(tvb, offset);
/* length of addr */
proto_tree_add_item(hdfs_tree, hf_hdfs_namelentwo, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
/* datanode id */
proto_tree_add_item(hdfs_tree, hf_hdfs_datanodeid, tvb, offset, length, ENC_ASCII|ENC_NA);
offset += length;
length = tvb_get_ntohs(tvb, offset);
/* length of addr */
proto_tree_add_item(hdfs_tree, hf_hdfs_namelentwo, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
/* storageid */
proto_tree_add_item(hdfs_tree, hf_hdfs_storageid, tvb, offset, length, ENC_ASCII|ENC_NA);
offset += length;
/* info port */
proto_tree_add_item(hdfs_tree, hf_hdfs_infoport, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
/* default name node port */
proto_tree_add_item(hdfs_tree, hf_hdfs_ipcport, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
/* capacity */
proto_tree_add_item(hdfs_tree, hf_hdfs_capacity, tvb, offset, 8, ENC_BIG_ENDIAN);
offset += 8;
/* dfs used */
proto_tree_add_item(hdfs_tree, hf_hdfs_dfsused, tvb, offset, 8, ENC_BIG_ENDIAN);
offset += 8;
/* remaining */
proto_tree_add_item(hdfs_tree, hf_hdfs_remaining, tvb, offset, 8, ENC_BIG_ENDIAN);
offset += 8;
/* last update */
proto_tree_add_item(hdfs_tree, hf_hdfs_lastupdate, tvb, offset, 8, ENC_BIG_ENDIAN);
offset += 8;
/* num active connections */
proto_tree_add_item(hdfs_tree, hf_hdfs_activecon, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
length = tvb_get_guint8(tvb, offset);
/* location rack length */
proto_tree_add_item(hdfs_tree, hf_hdfs_namelenone, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
/* location rack */
proto_tree_add_item(hdfs_tree, hf_hdfs_rackloc, tvb, offset, length, ENC_ASCII|ENC_NA);
offset += length;
length = tvb_get_guint8(tvb, offset);
/* hostname length */
proto_tree_add_item(hdfs_tree, hf_hdfs_namelenone, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
/* hostname */
proto_tree_add_item(hdfs_tree, hf_hdfs_hostname, tvb, offset, length, ENC_ASCII|ENC_NA);
offset += length;
length = tvb_get_guint8(tvb, offset);
/* admin state length */
proto_tree_add_item(hdfs_tree, hf_hdfs_namelenone, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
/* admin state */
proto_tree_add_item(hdfs_tree, hf_hdfs_adminstate, tvb, offset, length, ENC_ASCII|ENC_NA);
offset += length;
return offset;
}
/*
dissects the response from get block info.
*/
static void
dissect_resp_locatedblocks (tvbuff_t *tvb, proto_tree *hdfs_tree, int offset) {
/* file length = 8 */
proto_tree_add_item(hdfs_tree, hf_hdfs_filelen, tvb, offset, 8, ENC_BIG_ENDIAN);
offset += 8;
/* under construction = 1 */
proto_tree_add_item(hdfs_tree, hf_hdfs_construct, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
/* number of blocks */
proto_tree_add_item(hdfs_tree, hf_hdfs_blockcount, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
/* dissect info for each block */
while (tvb_reported_length(tvb) - offset > 0) {
offset = dissect_block_info (tvb, hdfs_tree, offset);
}
}
static int
dissect_hdfs_message(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
guint offset = 0;
int success = 0;
guint length = 0;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "HDFS");
/* Clear out stuff in the info column */
col_clear(pinfo->cinfo,COL_INFO);
if (tree) {
proto_item *ti;
proto_tree *hdfs_tree;
ti = proto_tree_add_item(tree, proto_hdfs, tvb, 0, -1, ENC_NA);
hdfs_tree = proto_item_add_subtree(ti, ett_hdfs);
/* Response */
if (pinfo->srcport == tcp_port) {
/* 4 bytes = sequence number */
proto_tree_add_item(hdfs_tree, hf_hdfs_packetno, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
/* 4 bytes = status -> 0000 = success, 0001 = error, ffff = fatal */
success = tvb_get_ntohl(tvb, offset);
proto_tree_add_item(hdfs_tree, hf_hdfs_success, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
if (success != 0) {
return offset;
}
if (!tvb_memeql(tvb, offset + 2, "long", 4)) {
dissect_resp_long (tvb, hdfs_tree, offset);
} else {
/* name length = 2 B */
length = tvb_get_ntohs(tvb, offset);
proto_tree_add_item(hdfs_tree, hf_hdfs_namelentwo, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
/* length bytes = method name */
proto_tree_add_item(hdfs_tree, hf_hdfs_objname, tvb, offset, length, ENC_ASCII|ENC_NA);
offset += length;
/* get length that we just dissected */
length = tvb_get_ntohs(tvb, offset);
/* 2 bytes = objects length */
proto_tree_add_item(hdfs_tree, hf_hdfs_namelentwo, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
/* length bytes = object name */
proto_tree_add_item(hdfs_tree, hf_hdfs_objname, tvb, offset, length, ENC_ASCII|ENC_NA);
offset += length;
/* responses about block location info */
if (!tvb_memeql(tvb, offset - length, "org.apache.hadoop.hdfs.protocol.LocatedBlocks", length)) {
dissect_resp_locatedblocks (tvb, hdfs_tree, offset);
/* responses about file statuses */
} else if (!tvb_memeql(tvb, offset - length, "org.apache.hadoop.hdfs.protocol.HdfsFileStatus", length)) {
dissect_resp_filestatus (tvb, hdfs_tree, offset);
} else {
/* get length */
length = tvb_get_ntohs(tvb, offset);
/* 2 bytes = parameter value length */
proto_tree_add_item(hdfs_tree, hf_hdfs_namelentwo, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
/* the value of the parameter */
proto_tree_add_item(hdfs_tree, hf_hdfs_paramval, tvb, offset, length, ENC_ASCII|ENC_NA);
/*offset += length;*/
}
}
/* Request to namenode */
} else {
/* check the packet length */
guint auth = tvb_get_ntohl(tvb, offset);
/* first setup packet starts with "hrpc" */
if (!tvb_memeql(tvb, offset, REQUEST_STR, sizeof(REQUEST_STR) - 1)) {
proto_tree_add_item(hdfs_tree, hf_hdfs_sequenceno, tvb, offset, sizeof(REQUEST_STR) - 1, ENC_ASCII|ENC_NA);
offset += (int)sizeof(REQUEST_STR) - 1;
proto_tree_add_item(hdfs_tree, hf_hdfs_pdu_type, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(hdfs_tree, hf_hdfs_flags, tvb, offset, 1, ENC_BIG_ENDIAN);
/*offset += 1;*/
} else {
/* second authentication packet */
if (auth + 4 != tvb_reported_length(tvb)) {
/* authentication length (read out of first 4 bytes) */
length = tvb_get_ntohl(tvb, offset);
proto_tree_add_item(hdfs_tree, hf_hdfs_authlen, tvb, offset, 4, ENC_ASCII|ENC_NA);
offset += 4;
/* authentication (length the number we just got) */
proto_tree_add_item(hdfs_tree, hf_hdfs_auth, tvb, offset, length, ENC_ASCII|ENC_NA);
offset += length;
}
/* data packets */
/* 4 bytes = length */
proto_tree_add_item(hdfs_tree, hf_hdfs_len, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
/* 4 bytes = sequence number */
proto_tree_add_item(hdfs_tree, hf_hdfs_packetno, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
/* dissect packet data */
dissect_data (tvb, hdfs_tree, offset);
}
}
}
return tvb_captured_length(tvb);
}
/* determine PDU length of protocol */
static guint get_hdfs_message_len(packet_info *pinfo _U_, tvbuff_t *tvb,
int offset _U_, void *data _U_)
{
int len = tvb_reported_length(tvb);
if (tvb_reported_length(tvb) == 1448 || tvb_reported_length(tvb) == 1321) {
len = 150 * tvb_get_ntohs(tvb, 113) + 115 ;
}
return len;
}
static int
dissect_hdfs(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data)
{
int frame_header_len = 0;
gboolean need_reassemble = FALSE;
frame_header_len = tvb_reported_length(tvb);
if (frame_header_len == 1448 || frame_header_len == 1321) {
need_reassemble = TRUE;
}
tcp_dissect_pdus(tvb, pinfo, tree, need_reassemble, frame_header_len, get_hdfs_message_len, dissect_hdfs_message, data);
return tvb_captured_length(tvb);
}
static void
apply_hdfs_prefs(void)
{
/* HDFS uses the port preference to determine request/response */
pref_t *hdfs_port = prefs_find_preference(prefs_find_module("hdfs"), "tcp.port");
tcp_port = *hdfs_port->varp.uint;
}
/* registers the protcol with the given names */
void
proto_register_hdfs(void)
{
static hf_register_info hf[] = {
/* list of all options for dissecting the protocol */
/*************************************************
First packet
**************************************************/
{ &hf_hdfs_sequenceno,
{ "HDFS protocol type", "hdfs.type",
FT_STRING, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_pdu_type,
{ "HDFS protocol version", "hdfs.version",
FT_UINT8, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_flags,
{ "HDFS authentication type", "hdfs.auth_type",
FT_UINT8, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
/***********************************************
Authentication packet
***********************************************/
{ &hf_hdfs_authlen,
{ "HDFS authentication length", "hdfs.authlen",
FT_STRING, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_auth,
{ "HDFS authorization bits", "hdfs.auth",
FT_STRING, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
/**********************************************
Response
**********************************************/
{ &hf_hdfs_packetno,
{ "HDFS packet number", "hdfs.seqno",
FT_UINT32, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_success,
{ "HDFS success", "hdfs.success",
FT_UINT32, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_strcall,
{ "HDFS method name", "hdfs.strcall",
FT_STRING, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
#if 0
{ &hf_hdfs_rest,
{ "HDFS value", "hdfs.rest",
FT_STRING, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
#endif
{ &hf_hdfs_blockloc,
{ "HDFS block location", "hdfs.blockloc",
FT_UINT64, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_blocksize,
{ "HDFS block size", "hdfs.blocksize",
FT_UINT64, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_endblockloc,
{ "HDFS file size", "hdfs.endblockloc",
FT_UINT64, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_blockgen,
{ "HDFS block gen", "hdfs.blockgen",
FT_UINT64, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_prover,
{ "HDFS protocol version", "hdfs.prover",
FT_UINT64, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_objname,
{ "HDFS object name", "hdfs.objname",
FT_STRING, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_filename,
{ "HDFS file name", "hdfs.filename",
FT_STRING, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_blockcount,
{ "HDFS block count", "hdfs.blockcount",
FT_UINT32, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_ownername,
{ "HDFS owner name", "hdfs.ownername",
FT_STRING, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_groupname,
{ "HDFS group name", "hdfs.groupname",
FT_STRING, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_accesstime,
{ "HDFS access time", "hdfs.accesstime",
FT_UINT64, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_modtime,
{ "HDFS modified time", "hdfs.modtime",
FT_UINT64, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_blockrep,
{ "HDFS block replication factor", "hdfs.blockrep",
FT_UINT16, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_isdir,
{ "HDFS is directory", "hdfs.isdir",
FT_UINT8, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_filelen,
{ "HDFS file length", "hdfs.filelen",
FT_UINT64, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_construct,
{ "HDFS under construction", "hdfs.construct",
FT_UINT8, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_rackloc,
{ "HDFS rack location", "hdfs.rackloc",
FT_STRING, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_adminstate,
{ "HDFS admin state", "hdfs.adminstate",
FT_STRING, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_hostname,
{ "HDFS hostname", "hdfs.hostname",
FT_STRING, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_namelenone,
{ "HDFS name length", "hdfs.namelenone",
FT_UINT8, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_namelentwo,
{ "HDFS name length", "hdfs.namelentwo",
FT_UINT16, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
/***************************************
file info response
***************************************/
{ &hf_hdfs_activecon,
{ "HDFS active connections", "hdfs.activecon",
FT_UINT32, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_lastupdate,
{ "HDFS lastupdate", "hdfs.lastupdate",
FT_UINT64, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_remaining,
{ "HDFS remaining", "hdfs.remaining",
FT_UINT64, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_dfsused,
{ "HDFS dfs used", "hdfs.dfsused",
FT_UINT64, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_capacity,
{ "HDFS capacity", "hdfs.capacity",
FT_UINT64, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_ipcport,
{ "HDFS ipcport", "hdfs.ipcport",
FT_UINT16, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_infoport,
{ "HDFS info port", "hdfs.infoport",
FT_UINT16, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_storageid,
{ "HDFS storage id", "hdfs.storageid",
FT_STRING, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_datanodeid,
{ "HDFS datanodeid", "hdfs.datanodeid",
FT_STRING, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_locations,
{ "HDFS locations", "hdfs.locations",
FT_UINT32, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_identifier,
{ "HDFS locations", "hdfs.identifier",
FT_STRING, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_password,
{ "HDFS password", "hdfs.password",
FT_STRING, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_kind,
{ "HDFS kind", "hdfs.kind",
FT_STRING, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_service,
{ "HDFS locations", "hdfs.service",
FT_STRING, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_corrupt,
{ "HDFS corrupt", "hdfs.corrupt",
FT_UINT8, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_offset,
{ "HDFS offset", "hdfs.offset",
FT_UINT64, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
/***********************************************
Data request
***********************************************/
{ &hf_hdfs_len,
{ "HDFS length", "hdfs.len",
FT_UINT32, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
/* packet number, same as in response
method name length, same as in response
string call, same as in response */
{ &hf_hdfs_params,
{ "HDFS number of parameters", "hdfs.params",
FT_UINT32, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_paramtype,
{ "HDFS parameter type", "hdfs.paramtype",
FT_STRING, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_paramval,
{ "HDFS parameter value", "hdfs.paramval",
FT_STRING, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
/* param value that is displayed as a number not a string */
{ &hf_hdfs_paramvalnum,
{ "HDFS parameter value", "hdfs.paramvalnum",
FT_INT64, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_hdfs_fileperm,
{ "HDFS File permission", "hdfs.fileperm",
FT_INT16, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
};
/* Setup protocol subtree array */
static gint *ett[] = {
&ett_hdfs
};
proto_hdfs = proto_register_protocol ("HDFS Protocol", "HDFS", "hdfs");
proto_register_field_array(proto_hdfs, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
prefs_register_protocol(proto_hdfs, apply_hdfs_prefs);
hdfs_handle = register_dissector("hdfs", dissect_hdfs, proto_hdfs);
}
/* registers handoff */
void
proto_reg_handoff_hdfs(void)
{
dissector_add_for_decode_as_with_preference("tcp.port", hdfs_handle);
}
/*
* Editor modelines
*
* Local Variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* ex: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/
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