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wireshark/epan/dissectors/packet-shicp.c

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/* packet-shicp.c
* Routines for Secure Host IP Configuration Protocol dissection
* Copyright 2021, Filip Kågesson <exfik@hms.se>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include <config.h>
#include <epan/packet.h>
#include <epan/expert.h>
#include <epan/addr_resolv.h>
#include <packet-udp.h>
void proto_reg_handoff_shicp(void);
void proto_register_shicp(void);
/* Protocols and header fields */
static int proto_shicp = -1;
static int hf_shicp_header = -1;
static int hf_shicp_protocol_version = -1;
static int hf_shicp_dst = -1;
static int hf_shicp_src = -1;
static int hf_shicp_flags = -1;
static int hf_shicp_msgclass_flag = -1;
static int hf_shicp_error_flag = -1;
static int hf_shicp_reserved_flag = -1;
static int hf_shicp_msgtype = -1;
static int hf_shicp_error = -1;
static int hf_shicp_error_string = -1;
static int hf_shicp_auth_req = -1;
static int hf_shicp_module_version = -1;
static int hf_shicp_module_desc = -1;
static int hf_shicp_supported_msg = -1;
static int hf_shicp_ip = -1;
static int hf_shicp_sn = -1;
static int hf_shicp_gw = -1;
static int hf_shicp_dns1 = -1;
static int hf_shicp_dns2 = -1;
static int hf_shicp_dhcp = -1;
static int hf_shicp_hn = -1;
static int hf_shicp_hn_max_len = -1;
static int hf_shicp_pswd_max_len = -1;
static int hf_shicp_challenge = -1;
static int hf_shicp_validity_period = -1;
static int hf_shicp_token = -1;
static int hf_shicp_pswd = -1;
static int hf_shicp_wink_type = -1;
static int hf_shicp_restart_mode = -1;
static gint ett_shicp = -1;
static gint ett_shicp_flags = -1;
static expert_field ei_shicp_error = EI_INIT;
static expert_field ei_shicp_malformed = EI_INIT;
#define SHICP_UDP_PORT 3250
#define SHICP_MIN_LENGTH 2
#define SHICP_MAX_LENGTH 548
#define SHICP_HEADER_SIZE 2
#define SHICP_ADDRESS_SIZE 6
#define SHICP_FLAGS_SIZE 1
#define SHICP_MSG_TYPE_SIZE 1
#define SHICP_ERROR_SIZE 1
#define SHICP_CHALLENGE_SIZE 4
#define SHICP_VALIDITY_PERIOD_SIZE 1
#define SHICP_TOKEN_SIZE 36
#define SHICP_WINK_TYPE_SIZE 1
#define SHICP_RESTART_MODE_SIZE 1
#define SHICP_FIXED_LEN 18
#define SHICP_MSG_CLASS_FLAG 0x01
#define SHICP_ERROR_FLAG 0x02
#define SHICP_RESERVED_FLAG 0xFC
/* Values of the supported message types. */
#define SHICP_DISCOVER_MSG_TYPE 0x00
#define SHICP_AUTH_CHALLENGE_MSG_TYPE 0x01
#define SHICP_CONFIG_MSG_TYPE 0x02
#define SHICP_WINK_MSG_TYPE 0x03
#define SHICP_RESTART_MSG_TYPE 0x04
#define SHICP_MASS_RESTART_MSG_TYPE 0x05
/* Keys of the parameters associated with discover messages. */
#define SHICP_DISCOVER_AUTH_REQ_KEY 0x00
#define SHICP_DISCOVER_MODULE_VERSION_KEY 0x01
#define SHICP_DISCOVER_MODULE_DESC_KEY 0x02
#define SHICP_DISCOVER_SUPPORTED_MSG_KEY 0x03
#define SHICP_DISCOVER_IP_KEY 0x04
#define SHICP_DISCOVER_SN_KEY 0x05
#define SHICP_DISCOVER_GW_KEY 0x06
#define SHICP_DISCOVER_DNS1_KEY 0x07
#define SHICP_DISCOVER_DNS2_KEY 0x08
#define SHICP_DISCOVER_DHCP_KEY 0x09
#define SHICP_DISCOVER_HN_KEY 0x0A
#define SHICP_DISCOVER_HN_MAX_LEN_KEY 0x0B
#define SHICP_DISCOVER_PSWD_MAX_LEN_KEY 0x0C
/* Keys of the parameters associated with configuration messages. */
#define SHICP_CONFIG_IP_KEY 0x00
#define SHICP_CONFIG_SN_KEY 0x01
#define SHICP_CONFIG_GW_KEY 0x02
#define SHICP_CONFIG_DNS1_KEY 0x03
#define SHICP_CONFIG_DNS2_KEY 0x04
#define SHICP_CONFIG_DHCP_KEY 0x05
#define SHICP_CONFIG_HN_KEY 0x06
#define SHICP_CONFIG_PSWD_KEY 0x07
/* The types of messages supported. */
static const value_string message_types[] = {
{SHICP_DISCOVER_MSG_TYPE, "Discover"},
{SHICP_AUTH_CHALLENGE_MSG_TYPE, "Authentication challenge"},
{SHICP_CONFIG_MSG_TYPE, "Configuration"},
{SHICP_WINK_MSG_TYPE, "Wink"},
{SHICP_RESTART_MSG_TYPE, "Restart"},
{SHICP_MASS_RESTART_MSG_TYPE, "Mass-restart"},
{0, NULL}
};
/* The error codes that are supported. */
static const value_string error_types[] = {
{0x00, "Request was rejected"},
{0x01, "Authentication failed"},
{0x02, "Authentication required"},
{0x03, "Unsupported message type"},
{0x1F, "Hostname too long"},
{0x20, "Password too long"},
{0x21, "Bad config"},
{0, NULL}
};
/* The types of restart mode that are supported. */
static const value_string restart_mode_types[] = {
{0x00, "Immediate restart"},
{0x01, "Delayed restart"},
{0, NULL}
};
static gboolean
test_shicp(packet_info* pinfo, tvbuff_t* tvb, int offset, void* data _U_)
{
/* Check that the port matches the port used by SHICP. */
if (pinfo->destport != SHICP_UDP_PORT) {
return FALSE;
}
/* Check that the length of the message is within allowed boundaries. */
if (tvb_reported_length(tvb) < SHICP_MIN_LENGTH || tvb_reported_length(tvb) > SHICP_MAX_LENGTH) {
return FALSE;
}
/* Check that the header tag starts with 0xABC0. */
if ((tvb_get_guint16(tvb, offset, ENC_LITTLE_ENDIAN) & 0xFFF8) != 0xABC0) {
return FALSE;
}
return TRUE;
}
static int
dissect_shicp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
void *data _U_)
{
proto_item* ti;
proto_item* flags_pi;
proto_item* error_pi;
proto_tree* shicp_tree;
guint offset = 0;
guint payload_end;
guint keyvalue_key = 0;
guint keyvalue_length = 0;
guint keyvalue_offset = 0;
guint keyvalue_end = 0;
guint8 supported_message_value = 0;
guint16 payload_length = 0;
guint32 version = 0;
guint32 msgtype_value = 0;
guint32 error_value = 0;
guint64 flags_value = 0;
wmem_strbuf_t* supported_messages = wmem_strbuf_new(pinfo->pool, "");
wmem_strbuf_t* module_addr_strbuf = wmem_strbuf_new(pinfo->pool, "");
static int* flags[] = {
&hf_shicp_reserved_flag,
&hf_shicp_error_flag,
&hf_shicp_msgclass_flag,
NULL
};
col_set_str(pinfo->cinfo, COL_PROTOCOL, "SHICP");
col_clear(pinfo->cinfo, COL_INFO);
ti = proto_tree_add_item(tree, proto_shicp, tvb, offset, -1, ENC_NA);
shicp_tree = proto_item_add_subtree(ti, ett_shicp);
proto_item_append_text(ti,
", Src:%s, Dst:%s",
address_with_resolution_to_str(pinfo->pool, &pinfo->dl_src),
address_with_resolution_to_str(pinfo->pool, &pinfo->dl_dst));
proto_tree_add_item_ret_uint(shicp_tree, hf_shicp_header, tvb, offset, SHICP_HEADER_SIZE, ENC_LITTLE_ENDIAN, &version);
proto_tree_add_uint(shicp_tree, hf_shicp_protocol_version, tvb, offset, SHICP_HEADER_SIZE, version & 0x07);
offset += SHICP_HEADER_SIZE;
proto_tree_add_item(shicp_tree, hf_shicp_dst, tvb, offset, SHICP_ADDRESS_SIZE, ENC_NA);
gchar* dst = tvb_address_to_str(pinfo->pool, tvb, AT_ETHER, offset);
offset += SHICP_ADDRESS_SIZE;
proto_tree_add_item(shicp_tree, hf_shicp_src, tvb, offset, SHICP_ADDRESS_SIZE, ENC_NA);
gchar* src = tvb_address_to_str(pinfo->pool, tvb, AT_ETHER, offset);
offset += SHICP_ADDRESS_SIZE;
flags_pi = proto_tree_add_bitmask_ret_uint64(shicp_tree, tvb, offset, hf_shicp_flags, ett_shicp_flags, flags, ENC_LITTLE_ENDIAN, &flags_value);
offset += SHICP_FLAGS_SIZE;
proto_tree_add_item_ret_uint(shicp_tree, hf_shicp_msgtype, tvb, offset, SHICP_MSG_TYPE_SIZE, ENC_LITTLE_ENDIAN, &msgtype_value);
offset += SHICP_MSG_TYPE_SIZE;
payload_length = tvb_get_guint16(tvb, offset, ENC_LITTLE_ENDIAN);
offset += 1;
if (flags_value & SHICP_ERROR_FLAG) {
proto_item_set_text(flags_pi,
"Message flags: 0x%02x (%s, %s)",
(guint)flags_value,
tfs_get_string(flags_value & SHICP_MSG_CLASS_FLAG, &tfs_response_request), "Error");
if (payload_length != 1) {
error_pi = proto_tree_add_string(shicp_tree, hf_shicp_error_string, tvb, offset, 0, "Malformed message");
expert_add_info(pinfo, error_pi, &ei_shicp_malformed);
col_append_str(pinfo->cinfo, COL_INFO, "Error: Malformed message");
}
else {
error_pi = proto_tree_add_item_ret_uint(shicp_tree, hf_shicp_error, tvb, offset, SHICP_ERROR_SIZE, ENC_LITTLE_ENDIAN, &error_value);
expert_add_info(pinfo, error_pi, &ei_shicp_error);
col_append_fstr(pinfo->cinfo, COL_INFO, "Error: %s", val_to_str(error_value, error_types, "%d"));
}
}
else {
proto_item_set_text(flags_pi,
"Message flags: 0x%02x (%s)",
(guint)flags_value,
tfs_get_string(flags_value & SHICP_MSG_CLASS_FLAG, &tfs_response_request));
col_append_fstr(pinfo->cinfo,
COL_INFO,
"%s, Type: %s",
tfs_get_string(flags_value & SHICP_MSG_CLASS_FLAG, &tfs_response_request),
val_to_str(msgtype_value, message_types, "%d"));
payload_end = offset + payload_length;
switch (msgtype_value)
{
case SHICP_DISCOVER_MSG_TYPE:
while (offset < payload_end) {
keyvalue_key = tvb_get_guint8(tvb, offset);
offset += 1;
keyvalue_length = tvb_get_guint8(tvb, offset);
offset += 1;
switch (keyvalue_key)
{
case SHICP_DISCOVER_AUTH_REQ_KEY:
proto_tree_add_item(shicp_tree, hf_shicp_auth_req, tvb, offset, keyvalue_length, ENC_LITTLE_ENDIAN);
break;
case SHICP_DISCOVER_MODULE_VERSION_KEY:
proto_tree_add_item(shicp_tree, hf_shicp_module_version, tvb, offset, keyvalue_length, ENC_ASCII | ENC_NA);
break;
case SHICP_DISCOVER_MODULE_DESC_KEY:
proto_tree_add_item(shicp_tree, hf_shicp_module_desc, tvb, offset, keyvalue_length, ENC_ASCII | ENC_NA);
break;
case SHICP_DISCOVER_SUPPORTED_MSG_KEY:
keyvalue_end = offset + keyvalue_length;
keyvalue_offset = offset;
supported_message_value = tvb_get_guint8(tvb, keyvalue_offset);
wmem_strbuf_append(supported_messages, val_to_str(supported_message_value, message_types, "%d"));
keyvalue_offset += 1;
while (keyvalue_offset < keyvalue_end) {
supported_message_value = tvb_get_guint8(tvb, keyvalue_offset);
wmem_strbuf_append_printf(supported_messages, ", %s", val_to_str(supported_message_value, message_types, "%d"));
keyvalue_offset += 1;
}
proto_tree_add_string(shicp_tree, hf_shicp_supported_msg, tvb, offset, keyvalue_length, wmem_strbuf_get_str(supported_messages));
break;
case SHICP_DISCOVER_IP_KEY:
proto_tree_add_item(shicp_tree, hf_shicp_ip, tvb, offset, keyvalue_length, ENC_LITTLE_ENDIAN);
break;
case SHICP_DISCOVER_SN_KEY:
proto_tree_add_item(shicp_tree, hf_shicp_sn, tvb, offset, keyvalue_length, ENC_LITTLE_ENDIAN);
break;
case SHICP_DISCOVER_GW_KEY:
proto_tree_add_item(shicp_tree, hf_shicp_gw, tvb, offset, keyvalue_length, ENC_LITTLE_ENDIAN);
break;
case SHICP_DISCOVER_DNS1_KEY:
proto_tree_add_item(shicp_tree, hf_shicp_dns1, tvb, offset, keyvalue_length, ENC_LITTLE_ENDIAN);
break;
case SHICP_DISCOVER_DNS2_KEY:
proto_tree_add_item(shicp_tree, hf_shicp_dns2, tvb, offset, keyvalue_length, ENC_LITTLE_ENDIAN);
break;
case SHICP_DISCOVER_DHCP_KEY:
proto_tree_add_item(shicp_tree, hf_shicp_dhcp, tvb, offset, keyvalue_length, ENC_LITTLE_ENDIAN);
break;
case SHICP_DISCOVER_HN_KEY:
proto_tree_add_item(shicp_tree, hf_shicp_hn, tvb, offset, keyvalue_length, ENC_ASCII | ENC_NA);
break;
case SHICP_DISCOVER_HN_MAX_LEN_KEY:
proto_tree_add_item(shicp_tree, hf_shicp_hn_max_len, tvb, offset, keyvalue_length, ENC_LITTLE_ENDIAN);
break;
case SHICP_DISCOVER_PSWD_MAX_LEN_KEY:
proto_tree_add_item(shicp_tree, hf_shicp_pswd_max_len, tvb, offset, keyvalue_length, ENC_LITTLE_ENDIAN);
break;
default:
break;
}
offset += keyvalue_length;
}
break;
case SHICP_AUTH_CHALLENGE_MSG_TYPE:
if (payload_length >= 5) {
proto_tree_add_item(shicp_tree, hf_shicp_challenge, tvb, offset, SHICP_CHALLENGE_SIZE, ENC_LITTLE_ENDIAN);
offset += SHICP_CHALLENGE_SIZE;
proto_tree_add_item(shicp_tree, hf_shicp_validity_period, tvb, offset, SHICP_VALIDITY_PERIOD_SIZE, ENC_LITTLE_ENDIAN);
}
break;
case SHICP_CONFIG_MSG_TYPE:
if (payload_length >= SHICP_TOKEN_SIZE) {
proto_tree_add_item(shicp_tree, hf_shicp_token, tvb, offset, SHICP_TOKEN_SIZE, ENC_NA);
offset += SHICP_TOKEN_SIZE;
}
else if (payload_length == SHICP_ERROR_SIZE) {
proto_tree_add_item(shicp_tree, hf_shicp_error, tvb, offset, SHICP_ERROR_SIZE, ENC_ASCII | ENC_NA);
break;
}
while (offset < payload_end) {
keyvalue_key = tvb_get_guint8(tvb, offset);
offset += 1;
keyvalue_length = tvb_get_guint8(tvb, offset);
offset += 1;
switch (keyvalue_key)
{
case SHICP_CONFIG_IP_KEY:
proto_tree_add_item(shicp_tree, hf_shicp_ip, tvb, offset, keyvalue_length, ENC_LITTLE_ENDIAN);
break;
case SHICP_CONFIG_SN_KEY:
proto_tree_add_item(shicp_tree, hf_shicp_sn, tvb, offset, keyvalue_length, ENC_LITTLE_ENDIAN);
break;
case SHICP_CONFIG_GW_KEY:
proto_tree_add_item(shicp_tree, hf_shicp_gw, tvb, offset, keyvalue_length, ENC_LITTLE_ENDIAN);
break;
case SHICP_CONFIG_DNS1_KEY:
proto_tree_add_item(shicp_tree, hf_shicp_dns1, tvb, offset, keyvalue_length, ENC_LITTLE_ENDIAN);
break;
case SHICP_CONFIG_DNS2_KEY:
proto_tree_add_item(shicp_tree, hf_shicp_dns2, tvb, offset, keyvalue_length, ENC_LITTLE_ENDIAN);
break;
case SHICP_CONFIG_DHCP_KEY:
proto_tree_add_item(shicp_tree, hf_shicp_dhcp, tvb, offset, keyvalue_length, ENC_LITTLE_ENDIAN);
break;
case SHICP_CONFIG_HN_KEY:
proto_tree_add_item(shicp_tree, hf_shicp_hn, tvb, offset, keyvalue_length, ENC_ASCII | ENC_NA);
break;
case SHICP_CONFIG_PSWD_KEY:
proto_tree_add_item(shicp_tree, hf_shicp_pswd, tvb, offset, keyvalue_length, ENC_ASCII | ENC_NA);
break;
default:
break;
}
offset += keyvalue_length;
}
break;
case SHICP_WINK_MSG_TYPE:
if (payload_length >= SHICP_TOKEN_SIZE + SHICP_WINK_TYPE_SIZE) {
proto_tree_add_item(shicp_tree, hf_shicp_token, tvb, offset, SHICP_TOKEN_SIZE, ENC_NA);
offset += SHICP_TOKEN_SIZE;
proto_tree_add_item(shicp_tree, hf_shicp_wink_type, tvb, offset, SHICP_WINK_TYPE_SIZE, ENC_LITTLE_ENDIAN);
}
break;
case SHICP_RESTART_MSG_TYPE:
if (payload_length >= SHICP_TOKEN_SIZE + SHICP_RESTART_MODE_SIZE) {
proto_tree_add_item(shicp_tree, hf_shicp_token, tvb, offset, SHICP_TOKEN_SIZE, ENC_NA);
offset += SHICP_TOKEN_SIZE;
proto_tree_add_item(shicp_tree, hf_shicp_restart_mode, tvb, offset, SHICP_RESTART_MODE_SIZE, ENC_LITTLE_ENDIAN);
}
break;
default:
break;
}
}
wmem_strbuf_append(module_addr_strbuf, (flags_value & SHICP_MSG_CLASS_FLAG) ? src : dst);
if (strcmp(wmem_strbuf_get_str(module_addr_strbuf), "ff:ff:ff:ff:ff:ff") != 0) {
col_append_fstr(pinfo->cinfo, COL_INFO, ", Module MAC address: %s", wmem_strbuf_get_str(module_addr_strbuf));
}
return tvb_captured_length(tvb);
}
static guint
get_shicp_len(packet_info* pinfo _U_, tvbuff_t* tvb, int offset _U_, void* data _U_)
{
return (guint)tvb_reported_length(tvb);
}
static gboolean
dissect_shicp_heur_udp(tvbuff_t* tvb, packet_info* pinfo, proto_tree* tree, void* data)
{
return (udp_dissect_pdus(tvb, pinfo, tree, SHICP_FIXED_LEN, test_shicp,
get_shicp_len, dissect_shicp, data) != 0);
}
void
proto_register_shicp(void)
{
expert_module_t* expert_shicp;
static hf_register_info hf[] = {
{ &hf_shicp_header,
{ "Header", "shicp.header",
FT_UINT16, BASE_HEX,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_shicp_protocol_version,
{ "Protocol version", "shicp.protocolversion",
FT_UINT8, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_shicp_dst,
{ "Destination", "shicp.dst",
FT_ETHER, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_shicp_src,
{ "Source", "shicp.src",
FT_ETHER, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_shicp_flags,
{ "Message flags", "shicp.flags",
FT_UINT8, BASE_HEX,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_shicp_reserved_flag,
{ "Reserved", "shicp.flags.reserved",
FT_BOOLEAN, 8,
TFS(&tfs_set_notset), 0xFC,
NULL, HFILL }
},
{ &hf_shicp_error_flag,
{ "Error", "shicp.flags.error",
FT_BOOLEAN, 8,
TFS(&tfs_set_notset), 0x02,
NULL, HFILL }
},
{ &hf_shicp_msgclass_flag,
{ "Class", "shicp.flags.msgclass",
FT_BOOLEAN, 8,
TFS(&tfs_response_request), 0x01,
NULL, HFILL }
},
{ &hf_shicp_msgtype,
{ "Message type", "shicp.msgtype",
FT_UINT8, BASE_HEX,
VALS(message_types), 0x0,
NULL, HFILL }
},
{ &hf_shicp_error,
{ "Error", "shicp.error",
FT_UINT8, BASE_HEX,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_shicp_error_string,
{ "Error", "shicp.error.string",
FT_STRINGZ, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_shicp_auth_req,
{ "Authentication required", "shicp.authreq",
FT_BOOLEAN, 8,
TFS(&tfs_true_false), 0x0,
NULL, HFILL }
},
{ &hf_shicp_module_version,
{ "Module version", "shicp.moduleversion",
FT_STRINGZ, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_shicp_module_desc,
{ "Module description", "shicp.moduledesc",
FT_STRINGZ, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_shicp_supported_msg,
{ "Supported messages", "shicp.supportedmsg",
FT_STRINGZ, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_shicp_ip,
{ "IP address", "shicp.ip",
FT_IPv4, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_shicp_sn,
{ "Subnet mask", "shicp.sn",
FT_IPv4, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_shicp_gw,
{ "Gateway address", "shicp.gw",
FT_IPv4, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_shicp_dns1,
{ "Primary DNS address", "shicp.dns1",
FT_IPv4, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_shicp_dns2,
{ "Secondary DNS address", "shicp.dns2",
FT_IPv4, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_shicp_dhcp,
{ "DHCP", "shicp.dhcp",
FT_BOOLEAN, 8,
TFS(&tfs_enabled_disabled), 0x0,
NULL, HFILL }
},
{ &hf_shicp_hn,
{ "Hostname", "shicp.hn",
FT_STRINGZ, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_shicp_hn_max_len,
{ "Hostname max length", "shicp.hnmaxlen",
FT_UINT8, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_shicp_pswd_max_len,
{ "Password max length", "shicp.pswdmaxlen",
FT_UINT8, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_shicp_challenge,
{ "Challenge", "shicp.challenge",
FT_UINT32, BASE_HEX,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_shicp_validity_period,
{ "Validity period (seconds)", "shicp.validityperiod",
FT_UINT8, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_shicp_token,
{ "Authentication token", "shicp.token",
FT_BYTES, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_shicp_pswd,
{ "Password", "shicp.pswd",
FT_STRINGZ, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_shicp_wink_type,
{ "Wink type", "shicp.winktype",
FT_UINT8, BASE_HEX,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_shicp_restart_mode,
{ "Restart mode", "shicp.restartmode",
FT_UINT8, BASE_HEX,
VALS(restart_mode_types), 0x0,
NULL, HFILL }
}
};
static gint *ett[] = {
&ett_shicp,
&ett_shicp_flags
};
/* Setup protocol expert items */
static ei_register_info ei[] = {
{ &ei_shicp_error,
{ "shicp.expert.error", PI_RESPONSE_CODE, PI_NOTE,
"Message contains an error code", EXPFILL }
},
{ &ei_shicp_malformed,
{ "shicp.malformed", PI_MALFORMED, PI_WARN,
"Malformed message", EXPFILL }
}
};
proto_shicp = proto_register_protocol(
"Secure Host IP Configuration Protocol",
"SHICP",
"shicp");
proto_register_field_array(proto_shicp, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
expert_shicp = expert_register_protocol(proto_shicp);
expert_register_field_array(expert_shicp, ei, array_length(ei));
}
void
proto_reg_handoff_shicp(void)
{
heur_dissector_add("udp", dissect_shicp_heur_udp, "SHICP over UDP", "shicp_udp", proto_shicp, 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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