diff options
Diffstat (limited to '')
| -rw-r--r-- | admin/wireshark-dissectors/peers/packet-happp.c | 1679 |
1 files changed, 1679 insertions, 0 deletions
diff --git a/admin/wireshark-dissectors/peers/packet-happp.c b/admin/wireshark-dissectors/peers/packet-happp.c new file mode 100644 index 0000000..581262f --- /dev/null +++ b/admin/wireshark-dissectors/peers/packet-happp.c @@ -0,0 +1,1679 @@ +/* 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, + PEER_MSG_CTRL_HEARTBEAT, +}; + +/* 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 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"; + case PEER_MSG_CTRL_HEARTBEAT: + return "heartbeat"; + 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) < 2) + return FALSE; + + if (tvb_get_guint8(tvb, 0) == PEER_MSG_CLASS_STICKTABLE && + tvb_get_guint8(tvb, 1) >= PEER_MSG_STKT_UPDATE && + tvb_get_guint8(tvb, 1) <= PEER_MSG_STKT_ACK) + goto found; + + 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; + + found: + 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); +} |