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wireshark/epan/dissectors/packet-proxy.c

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/* packet-proxy.c
* Routines for HAPROXY PROXY (v1/v2) dissection
* Copyright 2015, Alexis La Goutte (See AUTHORS)
* Copyright 2019 Peter Wu <peter@lekensteyn.nl>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
/*
* The PROXY protocol is a single, unfragmented header before the initial client
* packet. Following this header, the proxied protocol will take over and
* proceed normally.
*
* https://www.haproxy.org/download/1.8/doc/proxy-protocol.txt
*
* Requires "Try heuristics sub-dissectors first" in TCP protocol preferences.
*/
#include <config.h>
#include <epan/packet.h>
#include <epan/expert.h>
#include <wsutil/inet_addr.h>
#include <wsutil/strtoi.h>
#include <packet-tcp.h>
void proto_reg_handoff_proxy(void);
void proto_register_proxy(void);
static int proto_proxy = -1;
static int hf_proxy_version = -1;
static int hf_proxy_src_ipv4 = -1;
static int hf_proxy_dst_ipv4 = -1;
static int hf_proxy_src_ipv6 = -1;
static int hf_proxy_dst_ipv6 = -1;
static int hf_proxy_srcport = -1;
static int hf_proxy_dstport = -1;
/* V1 */
static int hf_proxy1_magic = -1;
static int hf_proxy1_proto = -1;
static int hf_proxy1_unknown = -1;
/* V2 */
static int hf_proxy2_magic = -1;
static int hf_proxy2_ver = -1;
static int hf_proxy2_cmd = -1;
static int hf_proxy2_addr_family = -1;
static int hf_proxy2_protocol = -1;
static int hf_proxy2_addr_family_protocol = -1;
static int hf_proxy2_len = -1;
static int hf_proxy2_src_unix = -1;
static int hf_proxy2_dst_unix = -1;
static int hf_proxy2_unknown = -1;
static int hf_proxy2_tlv = -1;
static int hf_proxy2_tlv_type = -1;
static int hf_proxy2_tlv_length = -1;
static int hf_proxy2_tlv_value = -1;
static int hf_proxy2_tlv_ssl_client = -1;
static int hf_proxy2_tlv_ssl_verify = -1;
static int hf_proxy2_tlv_ssl_version = -1;
static int hf_proxy2_tlv_ssl_cn = -1;
static int hf_proxy2_tlv_ssl_cipher = -1;
static int hf_proxy2_tlv_ssl_sig_alg = -1;
static int hf_proxy2_tlv_ssl_key_alg = -1;
static expert_field ei_proxy_header_length_too_small = EI_INIT;
static expert_field ei_proxy_bad_format = EI_INIT;
static gint ett_proxy1 = -1;
static gint ett_proxy2 = -1;
static gint ett_proxy2_fampro = -1;
static gint ett_proxy2_tlv = -1;
static const guint8 proxy_v2_magic[] = { 0x0d, 0x0a, 0x0d, 0x0a, 0x00, 0x0d, 0x0a, 0x51, 0x55, 0x49, 0x54, 0x0a };
static const value_string proxy2_family_protocol_vals[] = {
{ 0x00, "UNSPEC" },
{ 0x11, "TCP over IPv4" },
{ 0x12, "UDP over IPv4" },
{ 0x21, "TCP over IPv6" },
{ 0x22, "UDP over IPv6" },
{ 0x31, "UNIX stream" },
{ 0x32, "UNIX datagram" },
{ 0, NULL }
};
static const value_string proxy2_family_vals[] = {
{ 0x1, "IPv4" },
{ 0x2, "IPv6" },
{ 0x3, "UNIX" },
{ 0, NULL }
};
#define PP2_TYPE_ALPN 0x01
#define PP2_TYPE_AUTHORITY 0x02
#define PP2_TYPE_CRC32C 0x03
#define PP2_TYPE_NOOP 0x04
#define PP2_TYPE_SSL 0x20
#define PP2_SUBTYPE_SSL_VERSION 0x21
#define PP2_SUBTYPE_SSL_CN 0x22
#define PP2_SUBTYPE_SSL_CIPHER 0x23
#define PP2_SUBTYPE_SSL_SIG_ALG 0x24
#define PP2_SUBTYPE_SSL_KEY_ALG 0x25
#define PP2_TYPE_NETNS 0x30
#define PP2_TYPE_AWS 0xEA
static const value_string proxy2_tlv_vals[] = {
{ 0x00, "UNSPEC" },
{ PP2_TYPE_ALPN, "ALPN" },
{ PP2_TYPE_AUTHORITY, "AUTHORITY" },
{ PP2_TYPE_CRC32C, "CRC32C" },
{ PP2_TYPE_NOOP, "NOOP" },
{ PP2_TYPE_SSL, "SSL" },
{ PP2_SUBTYPE_SSL_VERSION, "SSL VERSION" },
{ PP2_SUBTYPE_SSL_CN, "SSL CN" },
{ PP2_SUBTYPE_SSL_CIPHER, "SSL CIPHER" },
{ PP2_SUBTYPE_SSL_SIG_ALG, "SSL SIG ALG" },
{ PP2_SUBTYPE_SSL_KEY_ALG, "SSL KEY ALG" },
{ PP2_TYPE_NETNS, "NETNS" },
{ PP2_TYPE_AWS, "AWS" },
{ 0, NULL }
};
static int
dissect_proxy_v2_tlv(tvbuff_t *tvb, packet_info *pinfo, proto_tree *proxy_tree, int offset)
{
while ( tvb_reported_length_remaining(tvb, offset) > 0) {
guint32 type, length;
proto_item *ti_tlv;
proto_tree *tlv_tree;
ti_tlv = proto_tree_add_item(proxy_tree, hf_proxy2_tlv, tvb, offset, 3, ENC_NA);
tlv_tree = proto_item_add_subtree(ti_tlv, ett_proxy2_tlv);
proto_tree_add_item_ret_uint(tlv_tree, hf_proxy2_tlv_type, tvb, offset, 1, ENC_NA, &type);
offset += 1;
proto_tree_add_item_ret_uint(tlv_tree, hf_proxy2_tlv_length, tvb, offset, 2, ENC_BIG_ENDIAN, &length);
offset += 2;
proto_item_append_text(ti_tlv, ": (t=%u,l=%d) %s", type, length, val_to_str(type, proxy2_tlv_vals ,"Unknown type") );
proto_item_set_len(ti_tlv, 1 + 2 + length);
proto_tree_add_item(tlv_tree, hf_proxy2_tlv_value, tvb, offset, length, ENC_NA);
switch (type) {
case PP2_TYPE_SSL: /* SSL */
proto_tree_add_item(tlv_tree, hf_proxy2_tlv_ssl_client, tvb, offset, 1, ENC_NA);
offset += 1;
proto_tree_add_item(tlv_tree, hf_proxy2_tlv_ssl_verify, tvb, offset, 4, ENC_NA);
offset += 4;
offset = dissect_proxy_v2_tlv(tvb, pinfo, tlv_tree, offset);
break;
case PP2_SUBTYPE_SSL_VERSION: /* SSL Version */
proto_tree_add_item(tlv_tree, hf_proxy2_tlv_ssl_version, tvb, offset, length, ENC_ASCII|ENC_NA);
proto_item_append_text(ti_tlv, ": %s", tvb_get_string_enc(wmem_packet_scope(), tvb, offset, length, ENC_ASCII));
offset += length;
break;
case PP2_SUBTYPE_SSL_CN: /* SSL CommonName */
proto_tree_add_item(tlv_tree, hf_proxy2_tlv_ssl_cn, tvb, offset, length, ENC_ASCII|ENC_NA);
proto_item_append_text(ti_tlv, ": %s", tvb_get_string_enc(wmem_packet_scope(), tvb, offset, length, ENC_ASCII));
offset += length;
break;
case PP2_SUBTYPE_SSL_CIPHER: /* SSL Cipher */
proto_tree_add_item(tlv_tree, hf_proxy2_tlv_ssl_cipher, tvb, offset, length, ENC_ASCII|ENC_NA);
offset += length;
break;
case PP2_SUBTYPE_SSL_SIG_ALG: /* SSL Signature Algorithm */
proto_tree_add_item(tlv_tree, hf_proxy2_tlv_ssl_sig_alg, tvb, offset, length, ENC_ASCII|ENC_NA);
offset += length;
break;
case PP2_SUBTYPE_SSL_KEY_ALG: /* SSL Key Algorithm */
proto_tree_add_item(tlv_tree, hf_proxy2_tlv_ssl_key_alg, tvb, offset, length, ENC_ASCII|ENC_NA);
offset += length;
break;
default:
offset += length;
break;
}
}
return offset;
}
/* "a 108-byte buffer is always enough to store all the line and a trailing zero" */
#define PROXY_V1_MAX_LINE_LENGTH 107
static gboolean
is_proxy_v1(tvbuff_t *tvb, gint *header_length)
{
const int min_header_size = sizeof("PROXY \r\n") - 1;
int length = tvb_reported_length(tvb);
gint next_offset;
if (length < min_header_size) {
return FALSE;
}
if (tvb_memeql(tvb, 0, "PROXY ", 6) != 0) {
return FALSE;
}
length = MIN(length, PROXY_V1_MAX_LINE_LENGTH);
if (tvb_find_line_end(tvb, 6, length, &next_offset, FALSE) == -1) {
return FALSE;
}
/* The line must end with a CRLF and not just a single CR or LF. */
if (tvb_memeql(tvb, next_offset - 2, "\r\n", 2) != 0) {
return FALSE;
}
if (header_length) {
*header_length = next_offset;
}
return TRUE;
}
/**
* Scan for the next non-empty token (terminated by a space). If invalid, add
* expert info for the remaining part and return FALSE. Otherwise return TRUE
* and the token length.
*/
static gboolean
proxy_v1_get_token_length(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset, int header_length, gchar *token, gint *token_length)
{
gint space_pos = tvb_find_guint8(tvb, offset, header_length - offset, ' ');
if (space_pos == -1) {
proto_tree_add_expert(tree, pinfo, &ei_proxy_bad_format, tvb, offset, header_length - offset);
return FALSE;
}
gint length = space_pos - offset;
if (token && length) {
DISSECTOR_ASSERT(length + 1 < PROXY_V1_MAX_LINE_LENGTH);
tvb_memcpy(tvb, token, offset, length);
token[length] = '\0';
}
*token_length = length;
return length != 0;
}
static int
dissect_proxy_v1_header(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
proto_item *ti;
proto_tree *proxy_tree;
guint offset = 0;
gint header_length = 0;
gint token_length = 0;
gint tcp_ip_version = 0;
guint16 port;
gchar buffer[PROXY_V1_MAX_LINE_LENGTH];
guint32 addr_ipv4;
ws_in6_addr addr_ipv6;
if (!is_proxy_v1(tvb, &header_length)) {
return 0;
}
col_set_str(pinfo->cinfo, COL_PROTOCOL, "PROXYv1");
ti = proto_tree_add_item(tree, proto_proxy, tvb, 0, header_length, ENC_NA);
proxy_tree = proto_item_add_subtree(ti, ett_proxy1);
/* Skip "PROXY" plus a space. */
proto_tree_add_item(proxy_tree, hf_proxy1_magic, tvb, offset, 5, ENC_NA);
offset += 5 + 1;
/* Protocol and family */
if (!proxy_v1_get_token_length(tvb, pinfo, proxy_tree, offset, header_length, buffer, &token_length)) {
return tvb_captured_length(tvb);
}
proto_tree_add_item(proxy_tree, hf_proxy1_proto, tvb, offset, token_length, ENC_NA|ENC_ASCII);
if (token_length == 4) {
if (memcmp(buffer, "TCP4", 4) == 0) {
tcp_ip_version = 4;
} else if (memcmp(buffer, "TCP6", 4) == 0) {
tcp_ip_version = 6;
}
}
offset += token_length + 1;
switch (tcp_ip_version) {
case 4:
/* IPv4 source address */
if (!proxy_v1_get_token_length(tvb, pinfo, proxy_tree, offset, header_length, buffer, &token_length)) {
return tvb_captured_length(tvb);
}
if (!ws_inet_pton4(buffer, &addr_ipv4)) {
proto_tree_add_expert_format(proxy_tree, pinfo, &ei_proxy_bad_format, tvb, offset, token_length,
"Unrecognized IPv4 address");
return tvb_captured_length(tvb);
}
proto_tree_add_ipv4(proxy_tree, hf_proxy_src_ipv4, tvb, offset, token_length, addr_ipv4);
offset += token_length + 1;
/* IPv4 destination address */
if (!proxy_v1_get_token_length(tvb, pinfo, proxy_tree, offset, header_length, buffer, &token_length)) {
return tvb_captured_length(tvb);
}
if (!ws_inet_pton4(buffer, &addr_ipv4)) {
proto_tree_add_expert_format(proxy_tree, pinfo, &ei_proxy_bad_format, tvb, offset, token_length,
"Unrecognized IPv4 address");
return tvb_captured_length(tvb);
}
proto_tree_add_ipv4(proxy_tree, hf_proxy_dst_ipv4, tvb, offset, token_length, addr_ipv4);
offset += token_length + 1;
break;
case 6:
/* IPv6 source address */
if (!proxy_v1_get_token_length(tvb, pinfo, proxy_tree, offset, header_length, buffer, &token_length)) {
return tvb_captured_length(tvb);
}
if (!ws_inet_pton6(buffer, &addr_ipv6)) {
proto_tree_add_expert_format(proxy_tree, pinfo, &ei_proxy_bad_format, tvb, offset, token_length,
"Unrecognized IPv6 address");
return tvb_captured_length(tvb);
}
proto_tree_add_ipv6(proxy_tree, hf_proxy_src_ipv6, tvb, offset, token_length, &addr_ipv6);
offset += token_length + 1;
/* IPv6 destination address */
if (!proxy_v1_get_token_length(tvb, pinfo, proxy_tree, offset, header_length, buffer, &token_length)) {
return tvb_captured_length(tvb);
}
if (!ws_inet_pton6(buffer, &addr_ipv6)) {
proto_tree_add_expert_format(proxy_tree, pinfo, &ei_proxy_bad_format, tvb, offset, token_length,
"Unrecognized IPv6 address");
return tvb_captured_length(tvb);
}
proto_tree_add_ipv6(proxy_tree, hf_proxy_dst_ipv6, tvb, offset, token_length, &addr_ipv6);
offset += token_length + 1;
break;
default:
proto_tree_add_item(proxy_tree, hf_proxy1_unknown, tvb, offset, header_length - 2 - offset, ENC_NA|ENC_ASCII);
return tvb_captured_length(tvb);
}
/* Source port */
if (!proxy_v1_get_token_length(tvb, pinfo, proxy_tree, offset, header_length, buffer, &token_length)) {
return tvb_captured_length(tvb);
}
if (!ws_strtou16(buffer, NULL, &port)) {
proto_tree_add_expert_format(proxy_tree, pinfo, &ei_proxy_bad_format, tvb, offset, token_length,
"Unrecognized port");
return tvb_captured_length(tvb);
}
proto_tree_add_uint(proxy_tree, hf_proxy_srcport, tvb, offset, token_length, port);
offset += token_length + 1;
/* Destination port */
token_length = header_length - 2 - offset;
if (token_length <= 0) {
proto_tree_add_expert(proxy_tree, pinfo, &ei_proxy_bad_format, tvb, offset, token_length);
return tvb_captured_length(tvb);
}
tvb_memcpy(tvb, buffer, offset, token_length);
buffer[token_length] = '\0';
if (!ws_strtou16(buffer, NULL, &port)) {
proto_tree_add_expert_format(proxy_tree, pinfo, &ei_proxy_bad_format, tvb, offset, token_length,
"Unrecognized port");
return tvb_captured_length(tvb);
}
proto_tree_add_uint(proxy_tree, hf_proxy_dstport, tvb, offset, token_length, port);
return header_length;
}
static int
dissect_proxy_v1(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
{
int offset = dissect_proxy_v1_header(tvb, pinfo, tree);
if (offset > 0 && tvb_reported_length_remaining(tvb, offset)) {
/*
* If the PROXY v1 header was successfully parsed with remaining data,
* call the next dissector. The port number does not have to be changed
* as the PROXY header is just a prefix. This also makes it easier to
* use Decode As to replace the next dissector.
*
* Caveat: if the other dissector uses conversation_set_dissector or
* similar, then the second pass will fail to call the PROXY dissector
* through heuristics. This affects HTTP.
* TODO fix two-pass dissection when coalesced with HTTP, see bug 15714.
*/
tvbuff_t *next_tvb = tvb_new_subset_remaining(tvb, offset);
/* Allow subdissector to perform reassembly. */
if (pinfo->can_desegment > 0)
pinfo->can_desegment++;
decode_tcp_ports(next_tvb, 0, pinfo, tree, pinfo->srcport, pinfo->destport,
NULL, (struct tcpinfo *)data);
offset += tvb_captured_length(next_tvb);
}
return offset;
}
static int
dissect_proxy_v2(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
void *data _U_)
{
proto_item *ti , *ti_ver;
proto_tree *proxy_tree, *fampro_tree;
guint offset = 0, next_offset;
guint32 header_len, fam_pro;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "PROXYv2");
ti = proto_tree_add_item(tree, proto_proxy, tvb, 0, -1, ENC_NA);
proxy_tree = proto_item_add_subtree(ti, ett_proxy2);
proto_tree_add_item(proxy_tree, hf_proxy2_magic, tvb, offset, 12, ENC_NA);
offset += 12;
proto_tree_add_item(proxy_tree, hf_proxy2_ver, tvb, offset, 1, ENC_NA);
proto_tree_add_item(proxy_tree, hf_proxy2_cmd, tvb, offset, 1, ENC_NA);
ti_ver = proto_tree_add_uint(proxy_tree, hf_proxy_version, tvb, offset, 1, 2);
proto_item_set_generated(ti_ver);
offset += 1;
ti = proto_tree_add_item_ret_uint(proxy_tree, hf_proxy2_addr_family_protocol, tvb, offset, 1, ENC_NA, &fam_pro);
fampro_tree = proto_item_add_subtree(ti, ett_proxy2_fampro);
proto_tree_add_item(fampro_tree, hf_proxy2_addr_family, tvb, offset, 1, ENC_NA);
proto_tree_add_item(fampro_tree, hf_proxy2_protocol, tvb, offset, 1, ENC_NA);
offset += 1;
proto_tree_add_item_ret_uint(proxy_tree, hf_proxy2_len, tvb, offset, 2, ENC_BIG_ENDIAN, &header_len);
offset += 2;
next_offset = offset + header_len;
switch (fam_pro){
case 0x11: /* TCP over IPv4 */
case 0x12: /* UDP over IPv4 */
proto_tree_add_item(proxy_tree, hf_proxy_src_ipv4, tvb, offset, 4, ENC_NA);
offset += 4;
proto_tree_add_item(proxy_tree, hf_proxy_dst_ipv4, tvb, offset, 4, ENC_NA);
offset += 4;
proto_tree_add_item(proxy_tree, hf_proxy_srcport, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(proxy_tree, hf_proxy_dstport, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
break;
case 0x21: /* TCP over IPv6 */
case 0x22: /* UDP over IPv6 */
proto_tree_add_item(proxy_tree, hf_proxy_src_ipv6, tvb, offset, 16, ENC_NA);
offset += 16;
proto_tree_add_item(proxy_tree, hf_proxy_dst_ipv6, tvb, offset, 16, ENC_NA);
offset += 16;
proto_tree_add_item(proxy_tree, hf_proxy_srcport, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(proxy_tree, hf_proxy_dstport, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
break;
case 0x31: /* UNIX stream */
case 0x32: /* UNIX datagram */
proto_tree_add_item(proxy_tree, hf_proxy2_src_unix, tvb, offset, 108, ENC_NA);
offset += 108;
proto_tree_add_item(proxy_tree, hf_proxy2_dst_unix, tvb, offset, 108, ENC_NA);
offset += 108;
break;
default:
proto_tree_add_item(proxy_tree, hf_proxy2_unknown, tvb, offset, header_len, ENC_NA);
offset += header_len;
break;
}
if (offset > next_offset) {
proto_tree_add_expert(proxy_tree, pinfo, &ei_proxy_header_length_too_small,
tvb, offset, -1);
return offset;
}
if (offset < header_len) {
/* TLV */
offset = dissect_proxy_v2_tlv(tvb, pinfo, proxy_tree, offset);
}
return offset;
}
static gboolean
dissect_proxy_heur(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
{
if (tvb_reported_length(tvb) >= 16 &&
tvb_captured_length(tvb) >= sizeof(proxy_v2_magic) &&
tvb_memeql(tvb, 0, proxy_v2_magic, sizeof(proxy_v2_magic)) == 0) {
// TODO maybe check for "(hdr.v2.ver_cmd & 0xF0) == 0x20" as done in "9. Sample code" from
// https://www.haproxy.org/download/1.8/doc/proxy-protocol.txt?
dissect_proxy_v2(tvb, pinfo, tree, data);
return TRUE;
} else if (is_proxy_v1(tvb, NULL)) {
dissect_proxy_v1(tvb, pinfo, tree, data);
return TRUE;
}
return FALSE;
}
void
proto_register_proxy(void)
{
expert_module_t *expert_proxy;
static hf_register_info hf[] = {
{ &hf_proxy_version,
{ "Version", "proxy.version",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_proxy_src_ipv4,
{ "Source Address", "proxy.src.ipv4",
FT_IPv4, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_proxy_dst_ipv4,
{ "Destination Address", "proxy.dst.ipv4",
FT_IPv4, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_proxy_src_ipv6,
{ "Source Address", "proxy.src.ipv6",
FT_IPv6, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_proxy_dst_ipv6,
{ "Destination Address", "proxy.dst.ipv6",
FT_IPv6, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_proxy_srcport,
{ "Source Port", "proxy.srcport",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_proxy_dstport,
{ "Destination Port", "proxy.dstport",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_proxy1_magic,
{ "PROXY v1 magic", "proxy.v1.magic",
FT_NONE, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_proxy1_proto,
{ "Protocol", "proxy.v1.proto",
FT_STRING, BASE_NONE, NULL, 0x0,
"Proxied protocol and family", HFILL }
},
{ &hf_proxy1_unknown,
{ "Unknown data", "proxy.v1.unknown",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_proxy2_magic,
{ "Magic", "proxy.v2.magic",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_proxy2_ver,
{ "Version", "proxy.v2.version",
FT_UINT8, BASE_DEC, NULL, 0xF0,
NULL, HFILL }
},
{ &hf_proxy2_cmd,
{ "Command", "proxy.v2.cmd",
FT_UINT8, BASE_DEC, NULL, 0x0F,
NULL, HFILL }
},
{ &hf_proxy2_addr_family_protocol,
{ "Address Family Protocol", "proxy.v2.addr_family_protocol",
FT_UINT8, BASE_HEX, VALS(proxy2_family_protocol_vals), 0x00,
NULL, HFILL }
},
{ &hf_proxy2_addr_family,
{ "Address Family", "proxy.v2.addr_family",
FT_UINT8, BASE_HEX, VALS(proxy2_family_vals), 0xF0,
NULL, HFILL }
},
{ &hf_proxy2_protocol,
{ "Protocol", "proxy.v2.protocol",
FT_UINT8, BASE_HEX, NULL, 0x0F,
NULL, HFILL }
},
{ &hf_proxy2_len,
{ "Length", "proxy.v2.length",
FT_UINT16, BASE_DEC, NULL, 0x00,
"Size of addresses and additional properties", HFILL }
},
{ &hf_proxy2_src_unix,
{ "Source Address", "proxy.v2.src.unix",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_proxy2_dst_unix,
{ "Destination Address", "proxy.v2.dst.unix",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_proxy2_unknown,
{ "Unknown data", "proxy.v2.unknown",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_proxy2_tlv,
{ "TLV", "proxy.v2.tlv",
FT_NONE, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_proxy2_tlv_type,
{ "Type", "proxy.v2.tlv.type",
FT_UINT8, BASE_HEX, VALS(proxy2_tlv_vals), 0x0,
NULL, HFILL }
},
{ &hf_proxy2_tlv_length,
{ "Length", "proxy.v2.tlv.length",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_proxy2_tlv_value,
{ "Value", "proxy.v2.tlv.value",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_proxy2_tlv_ssl_client,
{ "Client", "proxy.v2.tlv.ssl.client",
FT_UINT8, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_proxy2_tlv_ssl_verify,
{ "Verify", "proxy.v2.tlv.ssl.verify",
FT_UINT32, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_proxy2_tlv_ssl_version,
{ "Version", "proxy.v2.tlv.ssl.version",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_proxy2_tlv_ssl_cn,
{ "CN", "proxy.v2.tlv.ssl.cn",
FT_STRING, BASE_NONE, NULL, 0x0,
"CommonName", HFILL }
},
{ &hf_proxy2_tlv_ssl_cipher,
{ "Cipher", "proxy.v2.tlv.ssl.cipher",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_proxy2_tlv_ssl_sig_alg,
{ "SIG ALG", "proxy.v2.tlv.ssl.sig_alg",
FT_STRING, BASE_NONE, NULL, 0x0,
"Signature Algorithm", HFILL }
},
{ &hf_proxy2_tlv_ssl_key_alg,
{ "Key ALG", "proxy.v2.tlv.ssl.keu_alg",
FT_STRING, BASE_NONE, NULL, 0x0,
"Key Algorithm", HFILL }
},
};
static gint *ett[] = {
&ett_proxy1,
&ett_proxy2,
&ett_proxy2_fampro,
&ett_proxy2_tlv,
};
static ei_register_info ei[] = {
{ &ei_proxy_header_length_too_small,
{ "proxy.header.length_too_small", PI_MALFORMED, PI_WARN,
"Header length is too small", EXPFILL }
},
{ &ei_proxy_bad_format,
{ "proxy.bad_format", PI_MALFORMED, PI_WARN,
"Badly formatted PROXY header line", EXPFILL }
}
};
proto_proxy = proto_register_protocol("PROXY Protocol", "PROXY", "proxy");
proto_register_field_array(proto_proxy, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
expert_proxy = expert_register_protocol(proto_proxy);
expert_register_field_array(expert_proxy, ei, array_length(ei));
}
void
proto_reg_handoff_proxy(void)
{
heur_dissector_add("tcp", dissect_proxy_heur, "proxy", "proxy_tcp", proto_proxy, HEURISTIC_ENABLE);
heur_dissector_add("udp", dissect_proxy_heur, "proxy", "proxy_udp", proto_proxy, HEURISTIC_ENABLE);
}
/*
* Editor modelines - https://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* vi: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/
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