You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
1651 lines
45 KiB
1651 lines
45 KiB
/* 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>
|
|
|
|
#include <ws_version.h>
|
|
|
|
WS_DLL_PUBLIC_DEF const gchar plugin_version[] = "0.0.1";
|
|
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);
|
|
}
|
|
|