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haproxy/contrib/wireshark-dissectors/peers/packet-happp.c

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/* packet-happp.c
* Routines for HAProxy Peers Protocol (HAPPP) dissection
* Copyright 2016, Frédéric Lécaille <flecaille@haproxy.com>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 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 <stdio.h>
#include <inttypes.h>
#include <inttypes.h>
#include <arpa/inet.h>
#include <config.h>
#include <epan/to_str.h>
#include <epan/packet.h>
#include <epan/prefs.h>
#include <epan/conversation.h>
#include <epan/strutil.h>
#include <epan/dissectors/packet-tcp.h>
#include <epan/tvbuff.h>
#ifndef WITHOUT_WS_VERSION
#include <ws_version.h>
#endif
#ifndef WIRESHARK_VERSION_MAJOR
#define WIRESHARK_VERSION_MAJOR VERSION_MAJOR
#endif
#ifndef WIRESHARK_VERSION_MINOR
#define WIRESHARK_VERSION_MINOR VERSION_MINOR
#endif
#ifndef WIRESHARK_VERSION_MICRO
#define WIRESHARK_VERSION_MICRO VERSION_MICRO
#endif
#define HAPP_STR(str) #str
#define HAPP_XSTR(str) HAPP_STR(str)
WS_DLL_PUBLIC_DEF const gchar plugin_version[] = "0.0.1";
WS_DLL_PUBLIC_DEF const gchar plugin_release[] = HAPP_XSTR(WIRESHARK_VERSION_MAJOR.WIRESHARK_VERSION_MINOR);
WS_DLL_PUBLIC_DEF const int plugin_want_major = WIRESHARK_VERSION_MAJOR;
WS_DLL_PUBLIC_DEF const int plugin_want_minor = WIRESHARK_VERSION_MINOR;
WS_DLL_PUBLIC void plugin_register(void);
#define HAPPP_PROTOCOL "HAProxyS"
#define HAPPP_MSG_MIN_LEN 2
/* Status messages are the shortest ones (3 digits followed by a LF character) */
#define STATUS_HANDSHAKE_SUCCEEDED "200"
#define STATUS_TRY_AGAIN_LATER "300"
#define STATUS_PROTOCOL_ERROR "501"
#define STATUS_BAD_VERSION "502"
#define STATUS_LOCAL_PEER_NAME_MISMATCH "503"
#define STATUS_REMOTE_PEER_NAME_MISMATCH "504"
#include <stdio.h>
#include <ctype.h>
#include <stdarg.h>
#ifdef DEBUG
static unsigned char dbg_buf[16 << 10];
__attribute__((format (printf, 3, 4)))
void hexdump(const unsigned char *buf, size_t buflen, const char *title_fmt, ...)
{
size_t i;
va_list ap;
const unsigned char *p;
char str_buf[2 + 1 + 16 + 1 + 1];
va_start(ap, title_fmt);
vfprintf(stderr, title_fmt, ap);
va_end(ap);
p = buf;
str_buf[0] = str_buf[1] = ' ';
str_buf[2] = '|';
for (i = 0; i < buflen; i++) {
if (!(i & 0xf))
fprintf(stderr, "%08X: ", i);
fprintf(stderr, " %02x", *p);
if (isalnum(*p))
str_buf[(i & 0xf) + 3] = *p;
else
str_buf[(i & 0xf) + 3] = '.';
if ((i & 0xf) == 0xf || i == buflen -1) {
size_t k;
for (k = 0; k < (0x10 - (i & 0xf) - 1); k++)
fprintf(stderr, " ");
str_buf[(i & 0xf) + 4] = '|';
str_buf[(i & 0xf) + 5 ] = '\0';
fprintf(stderr, "%s\n", str_buf);
}
p++;
}
}
void hexdump_tvb(tvbuff_t *tvb, const gint offset, size_t len)
{
len = len > sizeof dbg_buf ? sizeof dbg_buf : len;
if (tvb_memcpy(tvb, dbg_buf, offset, len)) {
hexdump(dbg_buf, len, "tvb buff (%zu bytes):\n", len);
} else
fprintf(stderr, "tvb buff COPY FAILED\n");
}
#endif
/* HAPPP message classes */
enum {
PEER_MSG_CLASS_CONTROL = 0,
PEER_MSG_CLASS_ERROR,
PEER_MSG_CLASS_STICKTABLE = 0x0a,
PEER_MSG_CLASS_RESERVED = 0xff,
};
enum {
CONTROL_CLASS_INDEX,
ERROR_CLASS_INDEX,
STICK_TABLE_CLASS_INDEX,
RESERVED_CLASS_INDEX,
};
/* Control messages */
enum {
PEER_MSG_CTRL_RESYNCREQ = 0,
PEER_MSG_CTRL_RESYNCFINISHED,
PEER_MSG_CTRL_RESYNCPARTIAL,
PEER_MSG_CTRL_RESYNCCONFIRM,
};
/* Error messages */
enum {
PEER_MSG_ERR_PROTOCOL = 0,
PEER_MSG_ERR_SIZELIMIT,
};
/* Stick table messages */
enum {
PEER_MSG_STKT_UPDATE = 0x80,
PEER_MSG_STKT_INCUPDATE,
PEER_MSG_STKT_DEFINE,
PEER_MSG_STKT_SWITCH,
PEER_MSG_STKT_ACK,
PEER_MSG_STKT_UPDATE_TIMED,
PEER_MSG_STKT_INCUPDATE_TIMED,
};
/* This is the different key types of the stick tables.
* Same definitions as in HAProxy sources.
*/
enum {
SMP_T_ANY, /* any type */
SMP_T_BOOL, /* boolean */
SMP_T_SINT, /* signed 64bits integer type */
SMP_T_ADDR, /* ipv4 or ipv6, only used for input type compatibility */
SMP_T_IPV4, /* ipv4 type */
SMP_T_IPV6, /* ipv6 type */
SMP_T_STR, /* char string type */
SMP_T_BIN, /* buffer type */
SMP_T_METH, /* contain method */
SMP_TYPES /* number of types, must always be last */
};
/* The types of data we can store in a stick table.
* Same definitions as in HAProxy sources.
*/
enum {
STKT_DT_SERVER_ID, /* the server ID to use with this stream if > 0 */
STKT_DT_GPT0, /* General Purpose Flag 0. */
STKT_DT_GPC0, /* General Purpose Counter 0 (unsigned 32-bit integer) */
STKT_DT_GPC0_RATE, /* General Purpose Counter 0's event rate */
STKT_DT_CONN_CNT, /* cumulated number of connections */
STKT_DT_CONN_RATE, /* incoming connection rate */
STKT_DT_CONN_CUR, /* concurrent number of connections */
STKT_DT_SESS_CNT, /* cumulated number of sessions (accepted connections) */
STKT_DT_SESS_RATE, /* accepted sessions rate */
STKT_DT_HTTP_REQ_CNT, /* cumulated number of incoming HTTP requests */
STKT_DT_HTTP_REQ_RATE, /* incoming HTTP request rate */
STKT_DT_HTTP_ERR_CNT, /* cumulated number of HTTP requests errors (4xx) */
STKT_DT_HTTP_ERR_RATE, /* HTTP request error rate */
STKT_DT_BYTES_IN_CNT, /* cumulated bytes count from client to servers */
STKT_DT_BYTES_IN_RATE, /* bytes rate from client to servers */
STKT_DT_BYTES_OUT_CNT, /* cumulated bytes count from servers to client */
STKT_DT_BYTES_OUT_RATE, /* bytes rate from servers to client */
STKT_STATIC_DATA_TYPES, /* number of types above */
};
/* The types of data in stick stored in stick tables.
* Same definitions as in HAProxy sources.
*/
enum {
STD_T_SINT = 0, /* signed int */
STD_T_UINT, /* unsigned int */
STD_T_ULL, /* unsigned long long */
STD_T_FRQP, /* freq_ctr_period structure made of three unsigned int */
};
/* Prototypes */
void proto_reg_handoff_happp(void);
void proto_register_happp(void);
/* Initialize the protocol and registered fields */
static int proto_happp = -1;
static int hf_happp_fake = -1;
static int hf_happp_version = -1;
static int hf_happp_remotepeerid = -1;
static int hf_happp_localpeerid = -1;
static int hf_happp_processpid = -1;
static int hf_happp_relativepid = -1;
static int hf_happp_status = -1;
static int hf_happp_msg = -1;
static int hf_happp_msg_class = -1;
static int hf_happp_msg_type = -1;
static int hf_happp_msg_len = -1;
static int hf_happp_stkt_def_id = -1;
static int hf_happp_stkt_def_name_len = -1;
static int hf_happp_stkt_def_name_value = -1;
static int hf_happp_stkt_def_key_type = -1;
static int hf_happp_stkt_def_key_len = -1;
static int hf_happp_stkt_def_data_types = -1;
static int hf_happp_stkt_updt_update_id = -1;
static int hf_happp_stkt_updt_expire = -1;
static int hf_happp_stkt_updt_key_len = -1;
static int hf_happp_stkt_updt_key_ipv4_value = -1;
static int hf_happp_stkt_updt_key_str_value = -1;
static int hf_happp_stkt_updt_key_int_value = -1;
static int hf_happp_stkt_updt_key_bytes_value = -1;
static int hf_happp_stkt_updt_data_server_id = -1;
static int hf_happp_stkt_updt_data_gpt0 = -1;
static int hf_happp_stkt_updt_data_gpc0 = -1;
static int hf_happp_stkt_updt_data_gpc0_rate_curr_tick = -1;
static int hf_happp_stkt_updt_data_gpc0_rate_curr_ctr = -1;
static int hf_happp_stkt_updt_data_gpc0_rate_prev_ctr = -1;
static int hf_happp_stkt_updt_data_conn_cnt = -1;
static int hf_happp_stkt_updt_data_conn_rate_curr_tick = -1;
static int hf_happp_stkt_updt_data_conn_rate_curr_ctr = -1;
static int hf_happp_stkt_updt_data_conn_rate_prev_ctr = -1;
static int hf_happp_stkt_updt_data_conn_cur = -1;
static int hf_happp_stkt_updt_data_sess_cnt = -1;
static int hf_happp_stkt_updt_data_sess_rate_curr_tick = -1;
static int hf_happp_stkt_updt_data_sess_rate_curr_ctr = -1;
static int hf_happp_stkt_updt_data_sess_rate_prev_ctr = -1;
static int hf_happp_stkt_updt_data_http_req_cnt = -1;
static int hf_happp_stkt_updt_data_http_req_rate_curr_tick = -1;
static int hf_happp_stkt_updt_data_http_req_rate_curr_ctr = -1;
static int hf_happp_stkt_updt_data_http_req_rate_prev_ctr= -1;
static int hf_happp_stkt_updt_data_http_err_cnt = -1;
static int hf_happp_stkt_updt_data_http_err_rate_curr_tick = -1;
static int hf_happp_stkt_updt_data_http_err_rate_curr_ctr = -1;
static int hf_happp_stkt_updt_data_http_err_rate_prev_ctr = -1;
static int hf_happp_stkt_updt_data_bytes_in_cnt = -1;
static int hf_happp_stkt_updt_data_bytes_in_rate_curr_tick = -1;
static int hf_happp_stkt_updt_data_bytes_in_rate_curr_ctr = -1;
static int hf_happp_stkt_updt_data_bytes_in_rate_prev_ctr = -1;
static int hf_happp_stkt_updt_data_bytes_out_cnt = -1;
static int hf_happp_stkt_updt_data_bytes_out_rate_curr_tick = -1;
static int hf_happp_stkt_updt_data_bytes_out_rate_curr_ctr = -1;
static int hf_happp_stkt_updt_data_bytes_out_rate_prev_ctr = -1;
static int hf_happp_stkt_updt_ack_table_id = -1;
static int hf_happp_stkt_updt_ack_update_id = -1;
struct happp_cv_data_t {
/* Same thing for the type of the the stick table keys */
uint64_t stkt_key_type;
/* Same thing for the length of the stick table keys.
* Note that this is true only for key types different of SMT_T_STR (strings)
* and SMT_T_SINT (signed ints).
*/
uint64_t stkt_key_len;
/* Same thing for the types of the stick table data */
uint64_t stkt_data_types;
void *data;
};
struct hf_stkt_data_type {
const char *name;
unsigned int type;
int *hf_ids[3];
size_t hf_ids_len;
};
struct hf_stkt_data_type hf_stkt_data_types[] = {
[STKT_DT_SERVER_ID] = {
.name = "server_id",
.type = STD_T_SINT,
.hf_ids = {
&hf_happp_stkt_updt_data_server_id,
},
.hf_ids_len = 1,
},
[STKT_DT_GPT0] = {
.name = "gpt0",
.type = STD_T_UINT,
.hf_ids = {
&hf_happp_stkt_updt_data_gpt0,
},
.hf_ids_len = 1,
},
[STKT_DT_GPC0] = {
.name = "gpc0",
.type = STD_T_UINT,
.hf_ids = {
&hf_happp_stkt_updt_data_gpc0,
},
.hf_ids_len = 1,
},
[STKT_DT_GPC0_RATE] = {
.name = "gpc0_rate",
.type = STD_T_FRQP,
.hf_ids = {
&hf_happp_stkt_updt_data_gpc0_rate_curr_tick,
&hf_happp_stkt_updt_data_gpc0_rate_curr_ctr,
&hf_happp_stkt_updt_data_gpc0_rate_prev_ctr,
},
.hf_ids_len = 3,
},
[STKT_DT_CONN_CNT] = {
.name = "conn_cnt",
.type = STD_T_UINT,
.hf_ids = {
&hf_happp_stkt_updt_data_conn_cnt,
},
.hf_ids_len = 1,
},
[STKT_DT_CONN_RATE] = {
.name = "conn_rate",
.type = STD_T_FRQP,
.hf_ids = {
&hf_happp_stkt_updt_data_conn_rate_curr_tick,
&hf_happp_stkt_updt_data_conn_rate_curr_ctr,
&hf_happp_stkt_updt_data_conn_rate_prev_ctr,
},
.hf_ids_len = 3,
},
[STKT_DT_CONN_CUR] = {
.name = "conn_cur",
.type = STD_T_UINT,
.hf_ids = {
&hf_happp_stkt_updt_data_conn_cur,
},
.hf_ids_len = 1,
},
[STKT_DT_SESS_CNT] = {
.name = "sess_cnt",
.type = STD_T_UINT,
.hf_ids = {
&hf_happp_stkt_updt_data_sess_cnt,
},
.hf_ids_len = 1,
},
[STKT_DT_SESS_RATE] = {
.name = "sess_rate",
.type = STD_T_FRQP,
.hf_ids = {
&hf_happp_stkt_updt_data_sess_rate_curr_tick,
&hf_happp_stkt_updt_data_sess_rate_curr_ctr,
&hf_happp_stkt_updt_data_sess_rate_prev_ctr,
},
.hf_ids_len = 3,
},
[STKT_DT_HTTP_REQ_CNT] = {
.name = "http_req_cnt",
.type = STD_T_UINT,
.hf_ids = {
&hf_happp_stkt_updt_data_http_req_cnt,
},
.hf_ids_len = 1,
},
[STKT_DT_HTTP_REQ_RATE] = {
.name = "http_req_rate",
.type = STD_T_FRQP,
.hf_ids = {
&hf_happp_stkt_updt_data_http_req_rate_curr_tick,
&hf_happp_stkt_updt_data_http_req_rate_curr_ctr,
&hf_happp_stkt_updt_data_http_req_rate_prev_ctr,
},
.hf_ids_len = 3,
},
[STKT_DT_HTTP_ERR_CNT] = {
.name = "http_err_cnt",
.type = STD_T_UINT,
.hf_ids = {
&hf_happp_stkt_updt_data_http_err_cnt,
},
.hf_ids_len = 1,
},
[STKT_DT_HTTP_ERR_RATE] = {
.name = "http_err_rate",
.type = STD_T_FRQP,
.hf_ids = {
&hf_happp_stkt_updt_data_http_err_rate_curr_tick,
&hf_happp_stkt_updt_data_http_err_rate_curr_ctr,
&hf_happp_stkt_updt_data_http_err_rate_prev_ctr,
},
.hf_ids_len = 3,
},
[STKT_DT_BYTES_IN_CNT] = {
.name = "bytes_in_cnt",
.type = STD_T_ULL,
.hf_ids = {
&hf_happp_stkt_updt_data_bytes_in_cnt,
},
.hf_ids_len = 1,
},
[STKT_DT_BYTES_IN_RATE] = {
.name = "bytes_in_rate",
.type = STD_T_FRQP,
.hf_ids = {
&hf_happp_stkt_updt_data_bytes_in_rate_curr_tick,
&hf_happp_stkt_updt_data_bytes_in_rate_curr_ctr,
&hf_happp_stkt_updt_data_bytes_in_rate_prev_ctr,
},
.hf_ids_len = 3,
},
[STKT_DT_BYTES_OUT_CNT] = {
.name = "bytes_out_cnt",
.type = STD_T_ULL,
.hf_ids = {
&hf_happp_stkt_updt_data_bytes_out_cnt,
},
.hf_ids_len = 1,
},
[STKT_DT_BYTES_OUT_RATE] = {
.name = "bytes_out_rate",
.type = STD_T_FRQP,
.hf_ids = {
&hf_happp_stkt_updt_data_bytes_out_rate_curr_tick,
&hf_happp_stkt_updt_data_bytes_out_rate_curr_ctr,
&hf_happp_stkt_updt_data_bytes_out_rate_prev_ctr,
},
.hf_ids_len = 3,
},
};
/* Initialize the subtree pointers */
static gint ett_happp = -1;
static gint ett_happp_msg = -1;
static dissector_handle_t happp_tcp_handle;
static const char *control_msg_type_str_from_byte(guint8 c);
static const char *error_msg_type_str_from_byte(guint8 c);
static const char *stkt_msg_type_str_from_byte(guint8 c);
struct class_def_t {
const char *class_str;
const char *col_info_str;
const char *(*msg_type_str_func)(guint8 c);
unsigned int count;
};
static struct class_def_t class_def_tab[] = {
[CONTROL_CLASS_INDEX] = {
.class_str = "Control Class Message",
.col_info_str = "Ctl",
.msg_type_str_func = control_msg_type_str_from_byte,
},
[ERROR_CLASS_INDEX] = {
.class_str = "Error Class Message",
.col_info_str = "Err",
.msg_type_str_func = error_msg_type_str_from_byte,
},
[STICK_TABLE_CLASS_INDEX] = {
.class_str = "Stick Table Class Message",
.col_info_str = "Stkt",
.msg_type_str_func = stkt_msg_type_str_from_byte,
},
[RESERVED_CLASS_INDEX] = {
.class_str = "Reserved Class Message",
.col_info_str = "Res",
}
};
static int control_class_index_from_byte(guint8 c)
{
switch (c) {
case PEER_MSG_CLASS_CONTROL:
return CONTROL_CLASS_INDEX;
case PEER_MSG_CLASS_ERROR:
return ERROR_CLASS_INDEX;
case PEER_MSG_CLASS_STICKTABLE:
return STICK_TABLE_CLASS_INDEX;
case PEER_MSG_CLASS_RESERVED:
return RESERVED_CLASS_INDEX;
default:
return -1;
};
}
static const char *class_str_from_byte(guint8 c)
{
int class_idx;
class_idx = control_class_index_from_byte(c);
if (class_idx == -1)
return "N/A";
return class_def_tab[class_idx].class_str;
}
static const char *control_msg_type_str_from_byte(guint8 c)
{
switch (c) {
case PEER_MSG_CTRL_RESYNCREQ:
return "resync. request";
case PEER_MSG_CTRL_RESYNCFINISHED:
return "resync. finished";
case PEER_MSG_CTRL_RESYNCPARTIAL:
return "resync. partial";
case PEER_MSG_CTRL_RESYNCCONFIRM:
return "resync. confirm";
default:
return "Unknown";
}
}
static const char *stkt_msg_type_str_from_byte(guint8 c)
{
switch (c) {
case PEER_MSG_STKT_UPDATE:
return "update";
case PEER_MSG_STKT_INCUPDATE:
return "inc. update";
case PEER_MSG_STKT_DEFINE:
return "definition";
case PEER_MSG_STKT_SWITCH:
return "switch";
case PEER_MSG_STKT_ACK:
return "ack";
case PEER_MSG_STKT_UPDATE_TIMED:
return "update (with expiration)";
case PEER_MSG_STKT_INCUPDATE_TIMED:
return "inc. update (with expiration)";
default:
return "Unknown";
}
}
static const char *error_msg_type_str_from_byte(guint8 c)
{
switch (c) {
case PEER_MSG_ERR_PROTOCOL:
return "protocol error";
case PEER_MSG_ERR_SIZELIMIT:
return "limit size error";
default:
return "Unknown";
}
}
#define MAX_ENC_LEN 10
static uint64_t intdecode(unsigned char **str, size_t len) {
int i = 0;
uint64_t ret;
if (len < 1 || len > MAX_ENC_LEN) {
*str = NULL;
return 0;
}
ret = *(*str)++;
len--;
if ((ret & 0xf0) != 0xf0 || !len)
return ret;
do {
/* As shifting value may be greater than 8 (size of **str in bits),
* uint64_t cast is required.
*/
ret += (uint64_t)**str << (4 + 7 * i++);
} while (len-- && (*(*str)++ & 0x80) == 0x80);
return ret;
}
static int dissect_happp_handshake_pdu(tvbuff_t *tvb, packet_info *pinfo,
proto_tree *happp_tree)
{
int line_len, token_len;
gint offset = 0, next_offset;
const guchar *line, *line_end, *next_token;
size_t protocol_strlen;
line_len = tvb_find_line_end(tvb, offset, -1, &next_offset, TRUE);
/* XXX TO DO */
if (line_len == -1)
return -1;
protocol_strlen = strlen(HAPPP_PROTOCOL);
line = tvb_get_ptr(tvb, offset, line_len);
line_end = line + (next_offset - offset);
/* The line must contain at least HAPPP_PROTOCOL string followed by a space,
* then version string (at least one character) and a '\n' character.
*/
if (line_len >= (int)protocol_strlen + 3 &&
!tvb_strncaseeql(tvb, 0, HAPPP_PROTOCOL, protocol_strlen)) {
/* This is an Hello message */
col_set_str(pinfo->cinfo, COL_INFO, "Hello message");
token_len = get_token_len(line + protocol_strlen + 1, line_end, &next_token);
proto_tree_add_item(happp_tree, hf_happp_version, tvb,
offset + protocol_strlen + 1, token_len,
ENC_ASCII | ENC_NA);
offset = next_offset;
line_len = tvb_find_line_end(tvb, offset, -1, &next_offset, TRUE);
/* XXX TO DO */
if (line_len == -1)
return -1;
line = tvb_get_ptr(tvb, offset, line_len);
line_end = line + (next_offset - offset);
/* Get next token: remotepeerid */
token_len = get_token_len(line, line_end, &next_token);
if (!token_len)
return -1;
proto_tree_add_item(happp_tree, hf_happp_remotepeerid, tvb, offset,
token_len, ENC_ASCII | ENC_NA);
/* Retrieve next line */
offset = next_offset;
line_len = tvb_find_line_end(tvb, offset, -1, &next_offset, TRUE);
/* XXX TO DO */
if (line_len == -1)
return -1;
line = tvb_get_ptr(tvb, offset, line_len);
line_end = line + (next_offset - offset);
/* Get next token: localpeerid */
token_len = get_token_len(line, line_end, &next_token);
if (!token_len)
return -1;
proto_tree_add_item(happp_tree, hf_happp_localpeerid, tvb, offset,
token_len, ENC_ASCII | ENC_NA);
offset += next_token - line;
line = next_token;
/* Get next token: processpid */
token_len = get_token_len(line, line_end, &next_token);
if (!token_len)
return -1;
proto_tree_add_item(happp_tree, hf_happp_processpid, tvb, offset,
token_len, ENC_ASCII | ENC_NA);
offset += next_token - line;
line = next_token;
/* Get next token: relativepid */
token_len = get_token_len(line, line_end, &next_token);
if (!token_len)
return -1;
proto_tree_add_item(happp_tree, hf_happp_relativepid, tvb, offset,
token_len, ENC_ASCII | ENC_NA);
offset += next_token - line;
line = next_token;
}
else if (line_len == 3) {
col_set_str(pinfo->cinfo, COL_INFO, "Status message");
token_len = get_token_len(line, line_end, &next_token);
if (!token_len)
return -1;
proto_tree_add_item(happp_tree, hf_happp_status, tvb, offset,
token_len, ENC_ASCII | ENC_NA);
}
return tvb_captured_length(tvb);
}
/* Reset to zero all statistics counters of class_def_array */
static void init_class_def_tab(struct class_def_t *class_def_array, size_t size)
{
size_t i;
for (i = 0; i < size; i++)
class_def_array[i].count = 0;
}
/* Add statistics counting information about HAPPP message classes to
* info column (numbers of messages found in an HAPPP PDU by class).
*/
static inline void col_info_append_class(packet_info *pinfo, int class_index,
int *first_class)
{
if (!class_def_tab[class_index].count)
return;
col_append_fstr(pinfo->cinfo, COL_INFO, "%s%s=%u",
*first_class ? "" : " ",
class_def_tab[class_index].col_info_str,
class_def_tab[class_index].count);
class_def_tab[class_index].count = 0;
*first_class = 0;
}
static int intdecode_from_tvbuff(tvbuff_t *tvb, uint64_t *dec_val,
guint *offset, guint total)
{
unsigned char *p, enc_buf[MAX_ENC_LEN];
size_t max_enc_buf_len, left;
left = total - *offset;
max_enc_buf_len = left < sizeof enc_buf ? left : sizeof enc_buf;
if (!tvb_memcpy(tvb, enc_buf, *offset, max_enc_buf_len))
return -1;
p = enc_buf;
*dec_val = intdecode(&p, max_enc_buf_len);
if (!p)
return -1;
*offset += p - enc_buf;
return 0;
}
static int add_enc_field_to_happp_tree(int field_id, proto_tree *tree, tvbuff_t *tvb,
guint *offset, guint total, uint64_t *val)
{
uint64_t dec_val;
size_t dec_val_len;
guint saved_offset;
saved_offset = *offset;
if (intdecode_from_tvbuff(tvb, &dec_val, offset, total) < 0)
return -1;
dec_val_len = *offset - saved_offset;
proto_tree_add_uint64_format_value(tree, field_id, tvb, saved_offset,
dec_val_len, dec_val, "%" PRIu64, dec_val);
if (val)
*val = dec_val;
return 0;
}
static int add_int_field_to_happp_tree(int field_id,
tvbuff_t *tvb, proto_tree *tree,
guint *offset, guint total _U_)
{
uint32_t val;
if (!tvb_memcpy(tvb, &val, *offset, sizeof val))
return -1;
val = ntohl(val);
proto_tree_add_int_format_value(tree, field_id, tvb, *offset,
sizeof val, val, "%" PRId32, val);
*offset += sizeof val;
return 0;
}
static void dissect_happp_stkt_define_msg(tvbuff_t *tvb, packet_info *pinfo _U_,
proto_tree *tree, guint offset, guint total)
{
uint64_t dec_val;
uint64_t stkt_key_type;
uint64_t stkt_key_len;
uint64_t stkt_data_types;
struct happp_cv_data_t *happp_cv_data;
conversation_t *cv;
if (add_enc_field_to_happp_tree(hf_happp_stkt_def_id, tree,
tvb, &offset, total, NULL) < 0 ||
add_enc_field_to_happp_tree(hf_happp_stkt_def_name_len, tree,
tvb, &offset, total, &dec_val) < 0)
return;
/* Add the stick table name to HAPPP proto tree */
proto_tree_add_item(tree, hf_happp_stkt_def_name_value, tvb, offset, dec_val,
ENC_ASCII | ENC_NA);
offset += dec_val;
if (add_enc_field_to_happp_tree(hf_happp_stkt_def_key_type, tree,
tvb, &offset, total, &stkt_key_type) < 0 ||
add_enc_field_to_happp_tree(hf_happp_stkt_def_key_len, tree,
tvb, &offset, total, &stkt_key_len) < 0 ||
add_enc_field_to_happp_tree(hf_happp_stkt_def_data_types, tree,
tvb, &offset, total, &stkt_data_types) < 0)
return;
cv = find_conversation(pinfo->num, &pinfo->src, &pinfo->dst,
pinfo->ptype, pinfo->srcport, pinfo->destport, 0);
if (!cv)
return;
/*
* According to the documentation, it is not our responsibility
* to free this allocated memory.
*/
happp_cv_data = (struct happp_cv_data_t *)wmem_alloc(wmem_file_scope(),
sizeof *happp_cv_data);
if (!happp_cv_data)
return;
happp_cv_data->stkt_key_type = stkt_key_type;
happp_cv_data->stkt_key_len = stkt_key_len;
happp_cv_data->stkt_data_types = stkt_data_types;
conversation_add_proto_data(cv, proto_happp, happp_cv_data);
}
static void dissect_happp_stkt_update_msg(tvbuff_t *tvb, packet_info *pinfo _U_,
proto_tree *tree, guint offset, guint total,
unsigned char msg_type_byte)
{
unsigned int data_type;
uint64_t *stkt_key_type;
uint64_t *stkt_key_len;
struct happp_cv_data_t *happp_cv_data;
int has_update_id, has_exp;
conversation_t *cv;
cv = find_conversation(pinfo->num, &pinfo->src, &pinfo->dst,
pinfo->ptype, pinfo->srcport, pinfo->destport, 0);
if (!cv)
return;
happp_cv_data = (struct happp_cv_data_t *)conversation_get_proto_data(cv, proto_happp);
if (!happp_cv_data)
return;
has_update_id = msg_type_byte == PEER_MSG_STKT_UPDATE ||
msg_type_byte == PEER_MSG_STKT_UPDATE_TIMED;
has_exp = msg_type_byte == PEER_MSG_STKT_UPDATE_TIMED ||
msg_type_byte == PEER_MSG_STKT_INCUPDATE_TIMED;
/* Add the stick table update ID to HAPPP tree */
if (has_update_id &&
add_int_field_to_happp_tree(hf_happp_stkt_updt_update_id, tvb, tree,
&offset, total) < 0)
return;
if (has_exp &&
add_int_field_to_happp_tree(hf_happp_stkt_updt_expire, tvb, tree,
&offset, total) < 0)
return;
stkt_key_type = &happp_cv_data->stkt_key_type;
stkt_key_len = &happp_cv_data->stkt_key_len;
switch(*stkt_key_type) {
case SMP_T_STR:
if (add_enc_field_to_happp_tree(hf_happp_stkt_updt_key_len, tree, tvb,
&offset, total, stkt_key_len) < 0)
return;
proto_tree_add_item(tree, hf_happp_stkt_updt_key_str_value, tvb,
offset, *stkt_key_len, ENC_ASCII | ENC_NA);
offset += *stkt_key_len;
break;
case SMP_T_SINT:
if (add_int_field_to_happp_tree(hf_happp_stkt_updt_key_int_value, tvb, tree,
&offset, total) < 0)
return;
break;
case SMP_T_IPV4:
proto_tree_add_ipv4(tree, hf_happp_stkt_updt_key_ipv4_value,
tvb, offset, 4, tvb_get_ipv4(tvb, offset));
offset += 4;
break;
default:
proto_tree_add_item(tree, hf_happp_stkt_updt_key_bytes_value,
tvb, offset, *stkt_key_len, ENC_NA);
offset += *stkt_key_len;
break;
}
/* Data dissection */
for (data_type = 0;
data_type < sizeof hf_stkt_data_types / sizeof *hf_stkt_data_types;
data_type++) {
struct hf_stkt_data_type *hf_stkt_dtype;
size_t i;
if (!(happp_cv_data->stkt_data_types & (1 << data_type)))
continue;
hf_stkt_dtype = &hf_stkt_data_types[data_type];
for (i = 0; i < hf_stkt_dtype->hf_ids_len; i++)
if (add_enc_field_to_happp_tree(*hf_stkt_dtype->hf_ids[i], tree, tvb,
&offset, total, NULL) < 0)
return;
}
}
static void dissect_happp_stkt_ack_msg(tvbuff_t *tvb, packet_info *pinfo _U_,
proto_tree *tree, guint offset, guint total)
{
if (add_enc_field_to_happp_tree(hf_happp_stkt_updt_ack_table_id, tree, tvb,
&offset, total, NULL) < 0)
return;
if (add_int_field_to_happp_tree(hf_happp_stkt_updt_ack_update_id, tvb, tree,
&offset, total) < 0)
return;
}
static void dissect_happp_stk_msg(tvbuff_t *tvb, packet_info *pinfo _U_,
proto_tree *tree, guint8 msg_type_byte,
guint offset, guint total)
{
switch (msg_type_byte) {
case PEER_MSG_STKT_DEFINE:
dissect_happp_stkt_define_msg(tvb, pinfo, tree, offset, total);
break;
case PEER_MSG_STKT_UPDATE:
case PEER_MSG_STKT_INCUPDATE:
case PEER_MSG_STKT_UPDATE_TIMED:
case PEER_MSG_STKT_INCUPDATE_TIMED:
dissect_happp_stkt_update_msg(tvb, pinfo, tree, offset, total, msg_type_byte);
break;
case PEER_MSG_STKT_ACK:
dissect_happp_stkt_ack_msg(tvb, pinfo, tree, offset, total);
break;
};
}
static void
dissect_happp_msg(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree,
guint8 msg_class_byte, guint8 msg_type_byte,
guint *offset, guint total)
{
unsigned char *p, enc_buf[MAX_ENC_LEN];
uint64_t dec_msg_len;
size_t max_enc_buf_len, left, dec_val_len;
left = total - *offset;
max_enc_buf_len = left < sizeof enc_buf ? left : sizeof enc_buf;
if (!tvb_memcpy(tvb, enc_buf, *offset, max_enc_buf_len))
return;
p = enc_buf;
dec_msg_len = intdecode(&p, max_enc_buf_len);
if (!p)
return;
dec_val_len = p - enc_buf;
proto_tree_add_uint64_format_value(tree, hf_happp_msg_len,
tvb, *offset, dec_val_len, dec_msg_len,
"%" PRIu64, dec_msg_len);
*offset += dec_val_len;
switch (msg_class_byte) {
case PEER_MSG_CLASS_STICKTABLE:
dissect_happp_stk_msg(tvb, pinfo, tree, msg_type_byte, *offset, total);
break;
}
*offset += dec_msg_len;
}
/* Code to actually dissect the packets */
static int
dissect_happp_pdu(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
{
/* Set up structures needed to add the protocol subtree and manage it */
proto_item *item;
proto_tree *happp_tree;
/* Other misc. local variables. */
guint total, offset;
int first_message, first_class, curr_class, prev_class;
guint8 first_byte;
size_t sizeof_class_def_tab;
offset = 0;
first_message = first_class = 1;
total = tvb_reported_length(tvb);
/* create display subtree for the protocol */
item = proto_tree_add_item(tree, proto_happp, tvb, offset, -1, ENC_NA);
happp_tree = proto_item_add_subtree(item, ett_happp);
/* Set the protocol column value */
col_set_str(pinfo->cinfo, COL_PROTOCOL, "happp");
first_byte = (gchar)tvb_get_guint8(tvb, offset);
if (first_byte != PEER_MSG_CLASS_CONTROL &&
first_byte != PEER_MSG_CLASS_ERROR &&
first_byte != PEER_MSG_CLASS_STICKTABLE &&
first_byte != PEER_MSG_CLASS_RESERVED)
return dissect_happp_handshake_pdu(tvb, pinfo, happp_tree);
/* Reset class_def_tab message class counters */
sizeof_class_def_tab = sizeof class_def_tab / sizeof *class_def_tab;
init_class_def_tab(class_def_tab, sizeof_class_def_tab);
prev_class = curr_class = -1;
col_set_str(pinfo->cinfo, COL_INFO, "[");
while (offset < total) {
guint8 msg_class_byte, msg_type_byte;
const char *(*msg_type_str_func)(guint8 c);
struct class_def_t *class_def;
if (first_message) {
msg_class_byte = first_byte;
}
else {
msg_class_byte = tvb_get_guint8(tvb, offset);
}
curr_class = control_class_index_from_byte(msg_class_byte);
if (curr_class == -1)
return -1;
if (first_message) {
prev_class = curr_class;
first_message = 0;
}
class_def = &class_def_tab[curr_class];
class_def->count++;
msg_type_str_func = class_def->msg_type_str_func;
/* Insert a line separator */
proto_tree_add_item(happp_tree, hf_happp_fake, tvb,
offset, 0,
ENC_ASCII | ENC_NA);
proto_tree_add_uint_format_value(happp_tree, hf_happp_msg_class,
tvb, offset++, 1, msg_class_byte,
"%u (%s)", msg_class_byte,
class_str_from_byte(msg_class_byte));
msg_type_byte = tvb_get_guint8(tvb, offset);
/* First byte: message class */
switch (msg_class_byte) {
case PEER_MSG_CLASS_CONTROL:
case PEER_MSG_CLASS_ERROR:
case PEER_MSG_CLASS_STICKTABLE:
/* Second byte: message type in the class */
proto_tree_add_uint_format_value(happp_tree, hf_happp_msg_type,
tvb, offset++, 1, msg_type_byte,
"%u (%s)", msg_type_byte,
msg_type_str_func(msg_type_byte));
break;
case PEER_MSG_CLASS_RESERVED:
col_append_str(pinfo->cinfo, COL_INFO, "NON IMPLEMENTED");
break;
}
if (msg_class_byte >= PEER_MSG_CLASS_STICKTABLE)
dissect_happp_msg(tvb, pinfo, happp_tree,
msg_class_byte, msg_type_byte, &offset, total);
/* Sequentially add counting information to info column about
* number of messages found by class in an HAPPP PDU.
* For instance if an HAPPP PDU contains this sequence of messages:
* 1 Control message - 2 Stick Table messages - 3 Control messages
* column information displays: [Ctl=1 Stkt=2 Ctl=3].
*/
if (curr_class != prev_class) {
col_info_append_class(pinfo, prev_class, &first_class);
col_info_append_class(pinfo, curr_class, &first_class);
prev_class = curr_class;
}
else if (offset >= total) {
/* Last message */
col_info_append_class(pinfo, curr_class, &first_class);
}
}
col_append_str(pinfo->cinfo, COL_INFO, "]");
return tvb_captured_length(tvb);
}
static guint
get_happp_msg_len(packet_info *pinfo _U_, tvbuff_t *tvb, int offset, void *data _U_)
{
guint ret, len, left;
gint next_offset, line_len;
guint8 first_byte;
uint64_t dec_len;
int saved_offset;
/* 0 means there is not enough data to get length. */
ret = 0;
len = tvb_reported_length(tvb);
left = len - offset;
if (left < HAPPP_MSG_MIN_LEN)
goto out;
saved_offset = offset;
first_byte = (gchar)tvb_get_guint8(tvb, offset);
if (first_byte == PEER_MSG_CLASS_CONTROL ||
first_byte == PEER_MSG_CLASS_ERROR ||
first_byte == PEER_MSG_CLASS_RESERVED) {
ret = HAPPP_MSG_MIN_LEN;
} else if (first_byte == PEER_MSG_CLASS_STICKTABLE) {
int soff;
left -= HAPPP_MSG_MIN_LEN;
offset += HAPPP_MSG_MIN_LEN;
soff = offset;
if (intdecode_from_tvbuff(tvb, &dec_len, &offset, len) < 0)
goto out;
left -= offset - soff;
if (left < dec_len)
goto out;
ret = dec_len + offset - saved_offset;
} else {
/* hello message: add line lengths to compute this message length. */
for (;;) {
line_len = tvb_find_line_end(tvb, offset, -1, &next_offset, TRUE);
if (line_len == -1)
break;
ret += line_len + 1;
offset += line_len + 1;
}
}
out:
return ret;
}
static int
dissect_happp_tcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
{
tcp_dissect_pdus(tvb, pinfo, tree, TRUE,
HAPPP_MSG_MIN_LEN, get_happp_msg_len, dissect_happp_pdu, data);
return tvb_captured_length(tvb);
}
/* Register the protocol with Wireshark.
*
* This format is require because a script is used to build the C function that
* calls all the protocol registration.
*/
void
proto_register_happp(void)
{
/* Setup list of header fields See Section 1.5 of README.dissector for
* details. */
static hf_register_info hf[] = {
{
/* This one is used as separator between HAPPP messages */
&hf_happp_fake,
{
":-----------------------------------------------", "happp.fake",
FT_STRING, STR_ASCII, NULL, 0, "FAKE", HFILL
}
},
{
&hf_happp_version,
{
"version", "happp.version",
FT_STRING, STR_ASCII, NULL, 0, "version", HFILL
}
},
{
&hf_happp_remotepeerid,
{
"remotepeerid", "happp.remotepeerid",
FT_STRING, STR_ASCII, NULL, 0, "remote peer id", HFILL
}
},
{
&hf_happp_localpeerid,
{
"localpeerid", "happp.localpeerid",
FT_STRING, STR_ASCII, NULL, 0, "local peer id", HFILL
}
},
{
&hf_happp_processpid,
{
"processpid", "happp.processpid",
FT_STRING, STR_ASCII, NULL, 0, "process pid", HFILL
}
},
{
&hf_happp_relativepid,
{
"relativepid", "happp.relativepid",
FT_STRING, STR_ASCII, NULL, 0, "relative pid", HFILL
}
},
{
&hf_happp_status,
{
"status", "happp.status",
FT_STRING, STR_ASCII, NULL, 0, "status message", HFILL
}
},
{
&hf_happp_msg,
{
"message", "happp.msg",
FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_msg_class,
{
"message class", "happp.msg.class",
FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_msg_type,
{
"message type", "happp.msg.type",
FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_msg_len,
{
"message length", "happp.msg.len",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_def_id,
{
" ID", "happp.msg.stkt.def.id",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_def_name_len,
{
" name length", "happp.msg.stkt.def.name.length",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_def_name_value,
{
" name", "happp.msg.stkt.def.name.value",
FT_STRING, STR_ASCII, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_def_key_type,
{
" key type", "happp.msg.stkt.def.key.type",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_def_key_len,
{
" key length", "happp.msg.stkt.def.key.len",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_def_data_types,
{
" data types", "happp.msg.stkt.def.data_types",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_update_id,
{
" update ID", "happp.msg.stkt.updt.update_id",
FT_INT32, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_expire,
{
" expiration", "happp.msg.stkt.updt.expiration",
FT_INT32, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_key_len,
{
" key length", "happp.msg.stkt.updt.key.len",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_key_str_value,
{
" key value", "happp.msg.stkt.updt.key.str.value",
FT_STRING, STR_ASCII, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_key_int_value,
{
" key value", "happp.msg.stkt.updt.key.int.value",
FT_INT32, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_key_ipv4_value,
{
" key IPv4 value", "happp.msg.stkt.updt.key.ipv4.value",
FT_IPv4, BASE_NONE, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_key_bytes_value,
{
" key value", "happp.msg.stkt.updt.key.bytes.value",
FT_BYTES, 0, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_data_server_id,
{
" server_id", "happp.msg.stkt.updt.data.server_id",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_data_gpt0,
{
" gpt0", "happp.msg.stkt.updt.data.gpt0",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_data_gpc0,
{
" gpc0", "happp.msg.stkt.updt.data.gpc0",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_data_gpc0_rate_curr_tick,
{
" gpc0 curr. tick",
"happp.msg.stkt.updt.data.gpc0_rate.curr_tick",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_data_gpc0_rate_curr_ctr,
{
" gpc0 curr. ctr.",
"happp.msg.stkt.updt.data.gpc0_rate.curr_ctr",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_data_gpc0_rate_prev_ctr,
{
" gpc0 prev. ctr.",
"happp.msg.stkt.updt.data.gpc0_rate.prev_ctr",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_data_conn_cnt,
{
" conn_cnt",
"happp.msg.stkt.updt.data.conn_cnt",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_data_conn_rate_curr_tick,
{
" conn_rate curr. tick",
"happp.msg.stkt.updt.data.conn_rate.curr_tick",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_data_conn_rate_curr_ctr,
{
" conn_rate curr. ctr.",
"happp.msg.stkt.updt.data.conn_rate.curr_ctr",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_data_conn_rate_prev_ctr,
{
" conn_rate prev. ctr.",
"happp.msg.stkt.updt.data.conn_rate.prev_ctr",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_data_conn_cur,
{
" conn_curr curr. tick",
"happp.msg.stkt.updt.data.conn_cur",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_data_sess_cnt,
{
" sess_cnt", "happp.msg.stkt.updt.data.sess_cnt",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_data_sess_rate_curr_tick,
{
" sess_rate curr. tick",
"happp.msg.stkt.updt.data.sess_rate.curr_tick",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_data_sess_rate_curr_ctr,
{
" sess_rate curr. ctr.",
"happp.msg.stkt.updt.data.sess_rate.curr_ctr",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_data_sess_rate_prev_ctr,
{
" sess_rate prev. ctr.",
"happp.msg.stkt.updt.data.sess_rate.prev_ctr",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_data_http_req_cnt,
{
" http_req_cnt",
"happp.msg.stkt.updt.data.http_req_cnt",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_data_http_req_rate_curr_tick,
{
" http_req_rate curr. tick",
"happp.msg.stkt.updt.data.http_req_rate.curr_tick",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_data_http_req_rate_curr_ctr,
{
" http_req_rate curr. ctr.",
"happp.msg.stkt.updt.data.http_req_rate.curr_ctr",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_data_http_req_rate_prev_ctr,
{
" http_req_rate prev. ctr.",
"happp.msg.stkt.updt.data.http_req_rate.prev_ctr",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_data_http_err_cnt,
{
" http_err_cnt",
"happp.msg.stkt.updt.data.http_err_cnt",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_data_http_err_rate_curr_tick,
{
" http_err_rate curr. tick",
"happp.msg.stkt.updt.data.http_err_rate.curr_tick",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_data_http_err_rate_curr_ctr,
{
" http_err_rate curr. ctr.",
"happp.msg.stkt.updt.data.http_err_rate.curr_ctr",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_data_http_err_rate_prev_ctr,
{
" http_err_rate prev. ctr.",
"happp.msg.stkt.updt.data.http_err_rate.prev_ctr",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_data_bytes_in_cnt,
{
" bytes_in_cnt",
"happp.msg.stkt.updt.data.bytes_in_cnt",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_data_bytes_in_rate_curr_tick,
{
" bytes_in_rate curr. tick",
"happp.msg.stkt.updt.data.bytes_in_rate.curr_tick",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_data_bytes_in_rate_curr_ctr,
{
" bytes_in_rate curr. ctr.",
"happp.msg.stkt.updt.data.bytes_in_rate.curr_ctr",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_data_bytes_in_rate_prev_ctr,
{
" bytes_in_rate prev. ctr.",
"happp.msg.stkt.updt.data.bytes_in_rate.prev_ctr",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_data_bytes_out_cnt,
{
" bytes_out_cnt",
"happp.msg.stkt.updt.data.bytes_out_cnt",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_data_bytes_out_rate_curr_tick,
{
" bytes_out_rate curr. tick",
"happp.msg.stkt.updt.data.bytes_out_rate.curr_tick",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_data_bytes_out_rate_curr_ctr,
{
" bytes_out_rate curr. ctr.",
"happp.msg.stkt.updt.data.bytes_out_rate.curr_ctr",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_data_bytes_out_rate_prev_ctr,
{
" bytes_out_rate prev. ctr.",
"happp.msg.stkt.updt.data.bytes_out_rate.prev_ctr",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_ack_table_id,
{
" remote table Id",
"happp.msg.stkt.updt.ack.table_id",
FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{
&hf_happp_stkt_updt_ack_update_id,
{
" update Id", "happp.msg.stkt.updt.ack.update_id",
FT_INT32, BASE_DEC, NULL, 0, NULL, HFILL
}
},
};
/* Setup protocol subtree array */
static gint *ett[] = {
&ett_happp,
&ett_happp_msg
};
/* Register the protocol name and description */
proto_happp = proto_register_protocol("HAProxy Peers Protocol", "HAPPP", "happp");
/* Required function calls to register the header fields and subtrees */
proto_register_field_array(proto_happp, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
static gboolean
dissect_happp_heur_tcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
{
size_t proto_strlen;
conversation_t *conversation;
proto_strlen = strlen(HAPPP_PROTOCOL);
if (tvb_captured_length(tvb) < proto_strlen + 1)
return FALSE;
/* Check that we received a line beginning with HAPPP_PROTOCOL
* followed by a space character.
*/
if (tvb_strneql(tvb, 0, HAPPP_PROTOCOL, proto_strlen) ||
tvb_get_guint8(tvb, proto_strlen) != ' ')
return FALSE;
conversation = find_or_create_conversation(pinfo);
if (!conversation)
return FALSE;
conversation_set_dissector(conversation, happp_tcp_handle);
dissect_happp_tcp(tvb, pinfo, tree, data);
return TRUE;
}
/* Simpler form of proto_reg_handoff_happp which can be used if there are
* no prefs-dependent registration function calls. */
void
proto_reg_handoff_happp(void)
{
/* Use create_dissector_handle() to indicate that dissect_happp_tcp()
* returns the number of bytes it dissected (or 0 if it thinks the packet
* does not belong to HAProxy Peers Protocol).
*/
happp_tcp_handle = create_dissector_handle(dissect_happp_tcp, proto_happp);
heur_dissector_add("tcp", dissect_happp_heur_tcp, "HAPPP over TCP", "happp_tcp",
proto_happp, HEURISTIC_ENABLE);
}
void
plugin_register(void)
{
static proto_plugin plug;
plug.register_protoinfo = proto_register_happp;
plug.register_handoff = proto_reg_handoff_happp;
proto_register_plugin(&plug);
}
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