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tcpdump/print-lmp.c
Francois-Xavier Le Bail e96aba9a90 LMP: Fix a loop for undefined behavior at runtime 
The error was:
print-lmp.c:1132:13: runtime error: unsigned integer overflow: 249 - 516
cannot be represented in type 'unsigned int'

Update the output of a test accordingly.
2019-03-20 21:29:00 +01:00

1143 lines
37 KiB
C
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/*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that: (1) source code
* distributions retain the above copyright notice and this paragraph
* in its entirety, and (2) distributions including binary code include
* the above copyright notice and this paragraph in its entirety in
* the documentation or other materials provided with the distribution.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND
* WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
* LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE.
*
* Original code by Hannes Gredler (hannes@gredler.at)
* Support for LMP service discovery extensions (defined by OIF UNI 1.0)
* added by Manu Pathak (mapathak@cisco.com), May 2005
*/
/* \summary: Link Management Protocol (LMP) printer */
/* specification: RFC 4204 */
/* OIF UNI 1.0: http://www.oiforum.com/public/documents/OIF-UNI-01.0.pdf */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "netdissect-stdinc.h"
#include "netdissect.h"
#include "extract.h"
#include "addrtoname.h"
#include "gmpls.h"
/*
* LMP common header
*
* 0 1 2 3
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Vers | (Reserved) | Flags | Msg Type |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | LMP Length | (Reserved) |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
struct lmp_common_header {
nd_uint16_t version_res;
nd_uint8_t flags;
nd_uint8_t msg_type;
nd_uint16_t length;
nd_byte reserved[2];
};
#define LMP_VERSION 1
#define LMP_EXTRACT_VERSION(x) (((x)&0xf000)>>12)
static const struct tok lmp_header_flag_values[] = {
{ 0x01, "Control Channel Down"},
{ 0x02, "LMP restart"},
{ 0, NULL}
};
static const struct tok lmp_obj_te_link_flag_values[] = {
{ 0x01, "Fault Management Supported"},
{ 0x02, "Link Verification Supported"},
{ 0, NULL}
};
static const struct tok lmp_obj_data_link_flag_values[] = {
{ 0x01, "Data Link Port"},
{ 0x02, "Allocated for user traffic"},
{ 0x04, "Failed link"},
{ 0, NULL}
};
static const struct tok lmp_obj_channel_status_values[] = {
{ 1, "Signal Okay"},
{ 2, "Signal Degraded"},
{ 3, "Signal Fail"},
{ 0, NULL}
};
static const struct tok lmp_obj_begin_verify_flag_values[] = {
{ 0x0001, "Verify all links"},
{ 0x0002, "Data link type"},
{ 0, NULL}
};
static const struct tok lmp_obj_begin_verify_error_values[] = {
{ 0x01, "Link Verification Procedure Not supported"},
{ 0x02, "Unwilling to verify"},
{ 0x04, "Unsupported verification transport mechanism"},
{ 0x08, "Link-Id configuration error"},
{ 0x10, "Unknown object c-type"},
{ 0, NULL}
};
static const struct tok lmp_obj_link_summary_error_values[] = {
{ 0x01, "Unacceptable non-negotiable LINK-SUMMARY parameters"},
{ 0x02, "Renegotiate LINK-SUMMARY parameters"},
{ 0x04, "Invalid TE-LINK Object"},
{ 0x08, "Invalid DATA-LINK Object"},
{ 0x10, "Unknown TE-LINK Object c-type"},
{ 0x20, "Unknown DATA-LINK Object c-type"},
{ 0, NULL}
};
/* Service Config Supported Protocols Flags */
static const struct tok lmp_obj_service_config_sp_flag_values[] = {
{ 0x01, "RSVP Supported"},
{ 0x02, "LDP Supported"},
{ 0, NULL}
};
/* Service Config Client Port Service Attribute Transparency Flags */
static const struct tok lmp_obj_service_config_cpsa_tp_flag_values[] = {
{ 0x01, "Path/VC Overhead Transparency Supported"},
{ 0x02, "Line/MS Overhead Transparency Supported"},
{ 0x04, "Section/RS Overhead Transparency Supported"},
{ 0, NULL}
};
/* Service Config Client Port Service Attribute Contiguous Concatenation Types Flags */
static const struct tok lmp_obj_service_config_cpsa_cct_flag_values[] = {
{ 0x01, "Contiguous Concatenation Types Supported"},
{ 0, NULL}
};
/* Service Config Network Service Attributes Transparency Flags */
static const struct tok lmp_obj_service_config_nsa_transparency_flag_values[] = {
{ 0x01, "Standard SOH/RSOH Transparency Supported"},
{ 0x02, "Standard LOH/MSOH Transparency Supported"},
{ 0, NULL}
};
/* Service Config Network Service Attributes TCM Monitoring Flags */
static const struct tok lmp_obj_service_config_nsa_tcm_flag_values[] = {
{ 0x01, "Transparent Tandem Connection Monitoring Supported"},
{ 0, NULL}
};
/* Network Service Attributes Network Diversity Flags */
static const struct tok lmp_obj_service_config_nsa_network_diversity_flag_values[] = {
{ 0x01, "Node Diversity Supported"},
{ 0x02, "Link Diversity Supported"},
{ 0x04, "SRLG Diversity Supported"},
{ 0, NULL}
};
#define LMP_MSGTYPE_CONFIG 1
#define LMP_MSGTYPE_CONFIG_ACK 2
#define LMP_MSGTYPE_CONFIG_NACK 3
#define LMP_MSGTYPE_HELLO 4
#define LMP_MSGTYPE_VERIFY_BEGIN 5
#define LMP_MSGTYPE_VERIFY_BEGIN_ACK 6
#define LMP_MSGTYPE_VERIFY_BEGIN_NACK 7
#define LMP_MSGTYPE_VERIFY_END 8
#define LMP_MSGTYPE_VERIFY_END_ACK 9
#define LMP_MSGTYPE_TEST 10
#define LMP_MSGTYPE_TEST_STATUS_SUCCESS 11
#define LMP_MSGTYPE_TEST_STATUS_FAILURE 12
#define LMP_MSGTYPE_TEST_STATUS_ACK 13
#define LMP_MSGTYPE_LINK_SUMMARY 14
#define LMP_MSGTYPE_LINK_SUMMARY_ACK 15
#define LMP_MSGTYPE_LINK_SUMMARY_NACK 16
#define LMP_MSGTYPE_CHANNEL_STATUS 17
#define LMP_MSGTYPE_CHANNEL_STATUS_ACK 18
#define LMP_MSGTYPE_CHANNEL_STATUS_REQ 19
#define LMP_MSGTYPE_CHANNEL_STATUS_RESP 20
/* LMP Service Discovery message types defined by UNI 1.0 */
#define LMP_MSGTYPE_SERVICE_CONFIG 50
#define LMP_MSGTYPE_SERVICE_CONFIG_ACK 51
#define LMP_MSGTYPE_SERVICE_CONFIG_NACK 52
static const struct tok lmp_msg_type_values[] = {
{ LMP_MSGTYPE_CONFIG, "Config"},
{ LMP_MSGTYPE_CONFIG_ACK, "Config ACK"},
{ LMP_MSGTYPE_CONFIG_NACK, "Config NACK"},
{ LMP_MSGTYPE_HELLO, "Hello"},
{ LMP_MSGTYPE_VERIFY_BEGIN, "Begin Verify"},
{ LMP_MSGTYPE_VERIFY_BEGIN_ACK, "Begin Verify ACK"},
{ LMP_MSGTYPE_VERIFY_BEGIN_NACK, "Begin Verify NACK"},
{ LMP_MSGTYPE_VERIFY_END, "End Verify"},
{ LMP_MSGTYPE_VERIFY_END_ACK, "End Verify ACK"},
{ LMP_MSGTYPE_TEST, "Test"},
{ LMP_MSGTYPE_TEST_STATUS_SUCCESS, "Test Status Success"},
{ LMP_MSGTYPE_TEST_STATUS_FAILURE, "Test Status Failure"},
{ LMP_MSGTYPE_TEST_STATUS_ACK, "Test Status ACK"},
{ LMP_MSGTYPE_LINK_SUMMARY, "Link Summary"},
{ LMP_MSGTYPE_LINK_SUMMARY_ACK, "Link Summary ACK"},
{ LMP_MSGTYPE_LINK_SUMMARY_NACK, "Link Summary NACK"},
{ LMP_MSGTYPE_CHANNEL_STATUS, "Channel Status"},
{ LMP_MSGTYPE_CHANNEL_STATUS_ACK, "Channel Status ACK"},
{ LMP_MSGTYPE_CHANNEL_STATUS_REQ, "Channel Status Request"},
{ LMP_MSGTYPE_CHANNEL_STATUS_RESP, "Channel Status Response"},
{ LMP_MSGTYPE_SERVICE_CONFIG, "Service Config"},
{ LMP_MSGTYPE_SERVICE_CONFIG_ACK, "Service Config ACK"},
{ LMP_MSGTYPE_SERVICE_CONFIG_NACK, "Service Config NACK"},
{ 0, NULL}
};
/*
* LMP object header
*
* 0 1 2 3
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* |N| C-Type | Class | Length |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | |
* // (object contents) //
* | |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
struct lmp_object_header {
nd_uint8_t ctype;
nd_uint8_t class_num;
nd_uint16_t length;
};
#define LMP_OBJ_CC_ID 1
#define LMP_OBJ_NODE_ID 2
#define LMP_OBJ_LINK_ID 3
#define LMP_OBJ_INTERFACE_ID 4
#define LMP_OBJ_MESSAGE_ID 5
#define LMP_OBJ_CONFIG 6
#define LMP_OBJ_HELLO 7
#define LMP_OBJ_VERIFY_BEGIN 8
#define LMP_OBJ_VERIFY_BEGIN_ACK 9
#define LMP_OBJ_VERIFY_ID 10
#define LMP_OBJ_TE_LINK 11
#define LMP_OBJ_DATA_LINK 12
#define LMP_OBJ_CHANNEL_STATUS 13
#define LMP_OBJ_CHANNEL_STATUS_REQ 14
#define LMP_OBJ_ERROR_CODE 20
#define LMP_OBJ_SERVICE_CONFIG 51 /* defined in UNI 1.0 */
static const struct tok lmp_obj_values[] = {
{ LMP_OBJ_CC_ID, "Control Channel ID" },
{ LMP_OBJ_NODE_ID, "Node ID" },
{ LMP_OBJ_LINK_ID, "Link ID" },
{ LMP_OBJ_INTERFACE_ID, "Interface ID" },
{ LMP_OBJ_MESSAGE_ID, "Message ID" },
{ LMP_OBJ_CONFIG, "Configuration" },
{ LMP_OBJ_HELLO, "Hello" },
{ LMP_OBJ_VERIFY_BEGIN, "Verify Begin" },
{ LMP_OBJ_VERIFY_BEGIN_ACK, "Verify Begin ACK" },
{ LMP_OBJ_VERIFY_ID, "Verify ID" },
{ LMP_OBJ_TE_LINK, "TE Link" },
{ LMP_OBJ_DATA_LINK, "Data Link" },
{ LMP_OBJ_CHANNEL_STATUS, "Channel Status" },
{ LMP_OBJ_CHANNEL_STATUS_REQ, "Channel Status Request" },
{ LMP_OBJ_ERROR_CODE, "Error Code" },
{ LMP_OBJ_SERVICE_CONFIG, "Service Config" },
{ 0, NULL}
};
#define INT_SWITCHING_TYPE_SUBOBJ 1
#define WAVELENGTH_SUBOBJ 2
static const struct tok lmp_data_link_subobj[] = {
{ INT_SWITCHING_TYPE_SUBOBJ, "Interface Switching Type" },
{ WAVELENGTH_SUBOBJ , "Wavelength" },
{ 0, NULL}
};
#define LMP_CTYPE_IPV4 1
#define LMP_CTYPE_IPV6 2
#define LMP_CTYPE_LOC 1
#define LMP_CTYPE_RMT 2
#define LMP_CTYPE_UNMD 3
#define LMP_CTYPE_IPV4_LOC 1
#define LMP_CTYPE_IPV4_RMT 2
#define LMP_CTYPE_IPV6_LOC 3
#define LMP_CTYPE_IPV6_RMT 4
#define LMP_CTYPE_UNMD_LOC 5
#define LMP_CTYPE_UNMD_RMT 6
#define LMP_CTYPE_1 1
#define LMP_CTYPE_2 2
#define LMP_CTYPE_HELLO_CONFIG 1
#define LMP_CTYPE_HELLO 1
#define LMP_CTYPE_BEGIN_VERIFY_ERROR 1
#define LMP_CTYPE_LINK_SUMMARY_ERROR 2
/* C-Types for Service Config Object */
#define LMP_CTYPE_SERVICE_CONFIG_SP 1
#define LMP_CTYPE_SERVICE_CONFIG_CPSA 2
#define LMP_CTYPE_SERVICE_CONFIG_TRANSPARENCY_TCM 3
#define LMP_CTYPE_SERVICE_CONFIG_NETWORK_DIVERSITY 4
/*
* Different link types allowed in the Client Port Service Attributes
* subobject defined for LMP Service Discovery in the UNI 1.0 spec
*/
#define LMP_SD_SERVICE_CONFIG_CPSA_LINK_TYPE_SDH 5 /* UNI 1.0 Sec 9.4.2 */
#define LMP_SD_SERVICE_CONFIG_CPSA_LINK_TYPE_SONET 6 /* UNI 1.0 Sec 9.4.2 */
/*
* the ctypes are not globally unique so for
* translating it to strings we build a table based
* on objects offsetted by the ctype
*/
static const struct tok lmp_ctype_values[] = {
{ 256*LMP_OBJ_CC_ID+LMP_CTYPE_LOC, "Local" },
{ 256*LMP_OBJ_CC_ID+LMP_CTYPE_RMT, "Remote" },
{ 256*LMP_OBJ_NODE_ID+LMP_CTYPE_LOC, "Local" },
{ 256*LMP_OBJ_NODE_ID+LMP_CTYPE_RMT, "Remote" },
{ 256*LMP_OBJ_LINK_ID+LMP_CTYPE_IPV4_LOC, "IPv4 Local" },
{ 256*LMP_OBJ_LINK_ID+LMP_CTYPE_IPV4_RMT, "IPv4 Remote" },
{ 256*LMP_OBJ_LINK_ID+LMP_CTYPE_IPV6_LOC, "IPv6 Local" },
{ 256*LMP_OBJ_LINK_ID+LMP_CTYPE_IPV6_RMT, "IPv6 Remote" },
{ 256*LMP_OBJ_LINK_ID+LMP_CTYPE_UNMD_LOC, "Unnumbered Local" },
{ 256*LMP_OBJ_LINK_ID+LMP_CTYPE_UNMD_RMT, "Unnumbered Remote" },
{ 256*LMP_OBJ_INTERFACE_ID+LMP_CTYPE_IPV4_LOC, "IPv4 Local" },
{ 256*LMP_OBJ_INTERFACE_ID+LMP_CTYPE_IPV4_RMT, "IPv4 Remote" },
{ 256*LMP_OBJ_INTERFACE_ID+LMP_CTYPE_IPV6_LOC, "IPv6 Local" },
{ 256*LMP_OBJ_INTERFACE_ID+LMP_CTYPE_IPV6_RMT, "IPv6 Remote" },
{ 256*LMP_OBJ_INTERFACE_ID+LMP_CTYPE_UNMD_LOC, "Unnumbered Local" },
{ 256*LMP_OBJ_INTERFACE_ID+LMP_CTYPE_UNMD_RMT, "Unnumbered Remote" },
{ 256*LMP_OBJ_MESSAGE_ID+LMP_CTYPE_1, "1" },
{ 256*LMP_OBJ_MESSAGE_ID+LMP_CTYPE_2, "2" },
{ 256*LMP_OBJ_CONFIG+LMP_CTYPE_1, "1" },
{ 256*LMP_OBJ_HELLO+LMP_CTYPE_1, "1" },
{ 256*LMP_OBJ_VERIFY_BEGIN+LMP_CTYPE_1, "1" },
{ 256*LMP_OBJ_VERIFY_BEGIN_ACK+LMP_CTYPE_1, "1" },
{ 256*LMP_OBJ_VERIFY_ID+LMP_CTYPE_1, "1" },
{ 256*LMP_OBJ_TE_LINK+LMP_CTYPE_IPV4, "IPv4" },
{ 256*LMP_OBJ_TE_LINK+LMP_CTYPE_IPV6, "IPv6" },
{ 256*LMP_OBJ_TE_LINK+LMP_CTYPE_UNMD, "Unnumbered" },
{ 256*LMP_OBJ_DATA_LINK+LMP_CTYPE_IPV4, "IPv4" },
{ 256*LMP_OBJ_DATA_LINK+LMP_CTYPE_IPV6, "IPv6" },
{ 256*LMP_OBJ_DATA_LINK+LMP_CTYPE_UNMD, "Unnumbered" },
{ 256*LMP_OBJ_CHANNEL_STATUS+LMP_CTYPE_IPV4, "IPv4" },
{ 256*LMP_OBJ_CHANNEL_STATUS+LMP_CTYPE_IPV6, "IPv6" },
{ 256*LMP_OBJ_CHANNEL_STATUS+LMP_CTYPE_UNMD, "Unnumbered" },
{ 256*LMP_OBJ_CHANNEL_STATUS_REQ+LMP_CTYPE_IPV4, "IPv4" },
{ 256*LMP_OBJ_CHANNEL_STATUS_REQ+LMP_CTYPE_IPV6, "IPv6" },
{ 256*LMP_OBJ_CHANNEL_STATUS_REQ+LMP_CTYPE_UNMD, "Unnumbered" },
{ 256*LMP_OBJ_ERROR_CODE+LMP_CTYPE_1, "1" },
{ 256*LMP_OBJ_ERROR_CODE+LMP_CTYPE_2, "2" },
{ 256*LMP_OBJ_SERVICE_CONFIG+LMP_CTYPE_SERVICE_CONFIG_SP, "1" },
{ 256*LMP_OBJ_SERVICE_CONFIG+LMP_CTYPE_SERVICE_CONFIG_CPSA, "2" },
{ 256*LMP_OBJ_SERVICE_CONFIG+LMP_CTYPE_SERVICE_CONFIG_TRANSPARENCY_TCM, "3" },
{ 256*LMP_OBJ_SERVICE_CONFIG+LMP_CTYPE_SERVICE_CONFIG_NETWORK_DIVERSITY, "4" },
{ 0, NULL}
};
static int
lmp_print_data_link_subobjs(netdissect_options *ndo, const u_char *obj_tptr,
int total_subobj_len, int offset)
{
int hexdump = FALSE;
int subobj_type, subobj_len;
union { /* int to float conversion buffer */
float f;
uint32_t i;
} bw;
while (total_subobj_len > 0 && hexdump == FALSE ) {
subobj_type = EXTRACT_U_1(obj_tptr + offset);
subobj_len = EXTRACT_U_1(obj_tptr + offset + 1);
ND_PRINT("\n\t Subobject, Type: %s (%u), Length: %u",
tok2str(lmp_data_link_subobj,
"Unknown",
subobj_type),
subobj_type,
subobj_len);
if (subobj_len < 4) {
ND_PRINT(" (too short)");
break;
}
if ((subobj_len % 4) != 0) {
ND_PRINT(" (not a multiple of 4)");
break;
}
if (total_subobj_len < subobj_len) {
ND_PRINT(" (goes past the end of the object)");
break;
}
switch(subobj_type) {
case INT_SWITCHING_TYPE_SUBOBJ:
ND_PRINT("\n\t Switching Type: %s (%u)",
tok2str(gmpls_switch_cap_values,
"Unknown",
EXTRACT_U_1(obj_tptr + offset + 2)),
EXTRACT_U_1(obj_tptr + offset + 2));
ND_PRINT("\n\t Encoding Type: %s (%u)",
tok2str(gmpls_encoding_values,
"Unknown",
EXTRACT_U_1(obj_tptr + offset + 3)),
EXTRACT_U_1(obj_tptr + offset + 3));
bw.i = EXTRACT_BE_U_4(obj_tptr + offset + 4);
ND_PRINT("\n\t Min Reservable Bandwidth: %.3f Mbps",
bw.f*8/1000000);
bw.i = EXTRACT_BE_U_4(obj_tptr + offset + 8);
ND_PRINT("\n\t Max Reservable Bandwidth: %.3f Mbps",
bw.f*8/1000000);
break;
case WAVELENGTH_SUBOBJ:
ND_PRINT("\n\t Wavelength: %u",
EXTRACT_BE_U_4(obj_tptr + offset + 4));
break;
default:
/* Any Unknown Subobject ==> Exit loop */
hexdump=TRUE;
break;
}
total_subobj_len-=subobj_len;
offset+=subobj_len;
}
return (hexdump);
}
void
lmp_print(netdissect_options *ndo,
const u_char *pptr, u_int length)
{
const struct lmp_common_header *lmp_com_header;
const struct lmp_object_header *lmp_obj_header;
const u_char *tptr,*obj_tptr;
u_int version_res, tlen, lmp_obj_len, lmp_obj_ctype, obj_tlen;
int hexdump;
u_int offset;
u_int link_type;
union { /* int to float conversion buffer */
float f;
uint32_t i;
} bw;
ndo->ndo_protocol = "lmp";
tptr=pptr;
lmp_com_header = (const struct lmp_common_header *)pptr;
ND_TCHECK_SIZE(lmp_com_header);
version_res = EXTRACT_BE_U_2(lmp_com_header->version_res);
/*
* Sanity checking of the header.
*/
if (LMP_EXTRACT_VERSION(version_res) != LMP_VERSION) {
ND_PRINT("LMP version %u packet not supported",
LMP_EXTRACT_VERSION(version_res));
return;
}
/* in non-verbose mode just lets print the basic Message Type*/
if (ndo->ndo_vflag < 1) {
ND_PRINT("LMPv%u %s Message, length: %u",
LMP_EXTRACT_VERSION(version_res),
tok2str(lmp_msg_type_values, "unknown (%u)",EXTRACT_U_1(lmp_com_header->msg_type)),
length);
return;
}
/* ok they seem to want to know everything - lets fully decode it */
tlen=EXTRACT_BE_U_2(lmp_com_header->length);
ND_PRINT("\n\tLMPv%u, msg-type: %s, Flags: [%s], length: %u",
LMP_EXTRACT_VERSION(version_res),
tok2str(lmp_msg_type_values, "unknown, type: %u",EXTRACT_U_1(lmp_com_header->msg_type)),
bittok2str(lmp_header_flag_values,"none",EXTRACT_U_1(lmp_com_header->flags)),
tlen);
if (tlen < sizeof(struct lmp_common_header)) {
ND_PRINT(" (too short)");
return;
}
if (tlen > length) {
ND_PRINT(" (too long)");
tlen = length;
}
tptr+=sizeof(struct lmp_common_header);
tlen-=sizeof(struct lmp_common_header);
while(tlen>0) {
/* did we capture enough for fully decoding the object header ? */
ND_TCHECK_LEN(tptr, sizeof(struct lmp_object_header));
lmp_obj_header = (const struct lmp_object_header *)tptr;
lmp_obj_len=EXTRACT_BE_U_2(lmp_obj_header->length);
lmp_obj_ctype=EXTRACT_U_1(lmp_obj_header->ctype)&0x7f;
ND_PRINT("\n\t %s Object (%u), Class-Type: %s (%u) Flags: [%snegotiable], length: %u",
tok2str(lmp_obj_values,
"Unknown",
EXTRACT_U_1(lmp_obj_header->class_num)),
EXTRACT_U_1(lmp_obj_header->class_num),
tok2str(lmp_ctype_values,
"Unknown",
(EXTRACT_U_1(lmp_obj_header->class_num)<<8)+lmp_obj_ctype),
lmp_obj_ctype,
EXTRACT_U_1(lmp_obj_header->ctype)&0x80 ? "" : "non-",
lmp_obj_len);
if (lmp_obj_len < 4) {
ND_PRINT(" (too short)");
return;
}
if ((lmp_obj_len % 4) != 0) {
ND_PRINT(" (not a multiple of 4)");
return;
}
obj_tptr=tptr+sizeof(struct lmp_object_header);
obj_tlen=lmp_obj_len-sizeof(struct lmp_object_header);
/* did we capture enough for fully decoding the object ? */
ND_TCHECK_LEN(tptr, lmp_obj_len);
hexdump=FALSE;
switch(EXTRACT_U_1(lmp_obj_header->class_num)) {
case LMP_OBJ_CC_ID:
switch(lmp_obj_ctype) {
case LMP_CTYPE_LOC:
case LMP_CTYPE_RMT:
if (obj_tlen != 4) {
ND_PRINT(" (not correct for object)");
break;
}
ND_PRINT("\n\t Control Channel ID: %u (0x%08x)",
EXTRACT_BE_U_4(obj_tptr),
EXTRACT_BE_U_4(obj_tptr));
break;
default:
hexdump=TRUE;
}
break;
case LMP_OBJ_LINK_ID:
case LMP_OBJ_INTERFACE_ID:
switch(lmp_obj_ctype) {
case LMP_CTYPE_IPV4_LOC:
case LMP_CTYPE_IPV4_RMT:
if (obj_tlen != 4) {
ND_PRINT(" (not correct for object)");
break;
}
ND_PRINT("\n\t IPv4 Link ID: %s (0x%08x)",
ipaddr_string(ndo, obj_tptr),
EXTRACT_BE_U_4(obj_tptr));
break;
case LMP_CTYPE_IPV6_LOC:
case LMP_CTYPE_IPV6_RMT:
if (obj_tlen != 16) {
ND_PRINT(" (not correct for object)");
break;
}
ND_PRINT("\n\t IPv6 Link ID: %s (0x%08x)",
ip6addr_string(ndo, obj_tptr),
EXTRACT_BE_U_4(obj_tptr));
break;
case LMP_CTYPE_UNMD_LOC:
case LMP_CTYPE_UNMD_RMT:
if (obj_tlen != 4) {
ND_PRINT(" (not correct for object)");
break;
}
ND_PRINT("\n\t Link ID: %u (0x%08x)",
EXTRACT_BE_U_4(obj_tptr),
EXTRACT_BE_U_4(obj_tptr));
break;
default:
hexdump=TRUE;
}
break;
case LMP_OBJ_MESSAGE_ID:
switch(lmp_obj_ctype) {
case LMP_CTYPE_1:
if (obj_tlen != 4) {
ND_PRINT(" (not correct for object)");
break;
}
ND_PRINT("\n\t Message ID: %u (0x%08x)",
EXTRACT_BE_U_4(obj_tptr),
EXTRACT_BE_U_4(obj_tptr));
break;
case LMP_CTYPE_2:
if (obj_tlen != 4) {
ND_PRINT(" (not correct for object)");
break;
}
ND_PRINT("\n\t Message ID Ack: %u (0x%08x)",
EXTRACT_BE_U_4(obj_tptr),
EXTRACT_BE_U_4(obj_tptr));
break;
default:
hexdump=TRUE;
}
break;
case LMP_OBJ_NODE_ID:
switch(lmp_obj_ctype) {
case LMP_CTYPE_LOC:
case LMP_CTYPE_RMT:
if (obj_tlen != 4) {
ND_PRINT(" (not correct for object)");
break;
}
ND_PRINT("\n\t Node ID: %s (0x%08x)",
ipaddr_string(ndo, obj_tptr),
EXTRACT_BE_U_4(obj_tptr));
break;
default:
hexdump=TRUE;
}
break;
case LMP_OBJ_CONFIG:
switch(lmp_obj_ctype) {
case LMP_CTYPE_HELLO_CONFIG:
if (obj_tlen != 4) {
ND_PRINT(" (not correct for object)");
break;
}
ND_PRINT("\n\t Hello Interval: %u\n\t Hello Dead Interval: %u",
EXTRACT_BE_U_2(obj_tptr),
EXTRACT_BE_U_2(obj_tptr + 2));
break;
default:
hexdump=TRUE;
}
break;
case LMP_OBJ_HELLO:
switch(lmp_obj_ctype) {
case LMP_CTYPE_HELLO:
if (obj_tlen != 8) {
ND_PRINT(" (not correct for object)");
break;
}
ND_PRINT("\n\t Tx Seq: %u, Rx Seq: %u",
EXTRACT_BE_U_4(obj_tptr),
EXTRACT_BE_U_4(obj_tptr + 4));
break;
default:
hexdump=TRUE;
}
break;
case LMP_OBJ_TE_LINK:
switch(lmp_obj_ctype) {
case LMP_CTYPE_IPV4:
if (obj_tlen != 12) {
ND_PRINT(" (not correct for object)");
break;
}
ND_PRINT("\n\t Flags: [%s]",
bittok2str(lmp_obj_te_link_flag_values,
"none",
EXTRACT_U_1(obj_tptr)));
ND_PRINT("\n\t Local Link-ID: %s (0x%08x)"
"\n\t Remote Link-ID: %s (0x%08x)",
ipaddr_string(ndo, obj_tptr+4),
EXTRACT_BE_U_4(obj_tptr + 4),
ipaddr_string(ndo, obj_tptr+8),
EXTRACT_BE_U_4(obj_tptr + 8));
break;
case LMP_CTYPE_IPV6:
if (obj_tlen != 36) {
ND_PRINT(" (not correct for object)");
break;
}
ND_PRINT("\n\t Flags: [%s]",
bittok2str(lmp_obj_te_link_flag_values,
"none",
EXTRACT_U_1(obj_tptr)));
ND_PRINT("\n\t Local Link-ID: %s (0x%08x)"
"\n\t Remote Link-ID: %s (0x%08x)",
ip6addr_string(ndo, obj_tptr+4),
EXTRACT_BE_U_4(obj_tptr + 4),
ip6addr_string(ndo, obj_tptr+20),
EXTRACT_BE_U_4(obj_tptr + 20));
break;
case LMP_CTYPE_UNMD:
if (obj_tlen != 12) {
ND_PRINT(" (not correct for object)");
break;
}
ND_PRINT("\n\t Flags: [%s]",
bittok2str(lmp_obj_te_link_flag_values,
"none",
EXTRACT_U_1(obj_tptr)));
ND_PRINT("\n\t Local Link-ID: %u (0x%08x)"
"\n\t Remote Link-ID: %u (0x%08x)",
EXTRACT_BE_U_4(obj_tptr + 4),
EXTRACT_BE_U_4(obj_tptr + 4),
EXTRACT_BE_U_4(obj_tptr + 8),
EXTRACT_BE_U_4(obj_tptr + 8));
break;
default:
hexdump=TRUE;
}
break;
case LMP_OBJ_DATA_LINK:
switch(lmp_obj_ctype) {
case LMP_CTYPE_IPV4:
if (obj_tlen < 12) {
ND_PRINT(" (not correct for object)");
break;
}
ND_PRINT("\n\t Flags: [%s]",
bittok2str(lmp_obj_data_link_flag_values,
"none",
EXTRACT_U_1(obj_tptr)));
ND_PRINT("\n\t Local Interface ID: %s (0x%08x)"
"\n\t Remote Interface ID: %s (0x%08x)",
ipaddr_string(ndo, obj_tptr+4),
EXTRACT_BE_U_4(obj_tptr + 4),
ipaddr_string(ndo, obj_tptr+8),
EXTRACT_BE_U_4(obj_tptr + 8));
if (lmp_print_data_link_subobjs(ndo, obj_tptr, obj_tlen - 12, 12))
hexdump=TRUE;
break;
case LMP_CTYPE_IPV6:
if (obj_tlen < 36) {
ND_PRINT(" (not correct for object)");
break;
}
ND_PRINT("\n\t Flags: [%s]",
bittok2str(lmp_obj_data_link_flag_values,
"none",
EXTRACT_U_1(obj_tptr)));
ND_PRINT("\n\t Local Interface ID: %s (0x%08x)"
"\n\t Remote Interface ID: %s (0x%08x)",
ip6addr_string(ndo, obj_tptr+4),
EXTRACT_BE_U_4(obj_tptr + 4),
ip6addr_string(ndo, obj_tptr+20),
EXTRACT_BE_U_4(obj_tptr + 20));
if (lmp_print_data_link_subobjs(ndo, obj_tptr, obj_tlen - 36, 36))
hexdump=TRUE;
break;
case LMP_CTYPE_UNMD:
if (obj_tlen < 12) {
ND_PRINT(" (not correct for object)");
break;
}
ND_PRINT("\n\t Flags: [%s]",
bittok2str(lmp_obj_data_link_flag_values,
"none",
EXTRACT_U_1(obj_tptr)));
ND_PRINT("\n\t Local Interface ID: %u (0x%08x)"
"\n\t Remote Interface ID: %u (0x%08x)",
EXTRACT_BE_U_4(obj_tptr + 4),
EXTRACT_BE_U_4(obj_tptr + 4),
EXTRACT_BE_U_4(obj_tptr + 8),
EXTRACT_BE_U_4(obj_tptr + 8));
if (lmp_print_data_link_subobjs(ndo, obj_tptr, obj_tlen - 12, 12))
hexdump=TRUE;
break;
default:
hexdump=TRUE;
}
break;
case LMP_OBJ_VERIFY_BEGIN:
switch(lmp_obj_ctype) {
case LMP_CTYPE_1:
if (obj_tlen != 20) {
ND_PRINT(" (not correct for object)");
break;
}
ND_PRINT("\n\t Flags: %s",
bittok2str(lmp_obj_begin_verify_flag_values,
"none",
EXTRACT_BE_U_2(obj_tptr)));
ND_PRINT("\n\t Verify Interval: %u",
EXTRACT_BE_U_2(obj_tptr + 2));
ND_PRINT("\n\t Data links: %u",
EXTRACT_BE_U_4(obj_tptr + 4));
ND_PRINT("\n\t Encoding type: %s",
tok2str(gmpls_encoding_values, "Unknown", EXTRACT_U_1((obj_tptr + 8))));
ND_PRINT("\n\t Verify Transport Mechanism: %u (0x%x)%s",
EXTRACT_BE_U_2(obj_tptr + 10),
EXTRACT_BE_U_2(obj_tptr + 10),
EXTRACT_BE_U_2(obj_tptr + 10)&8000 ? " (Payload test messages capable)" : "");
bw.i = EXTRACT_BE_U_4(obj_tptr + 12);
ND_PRINT("\n\t Transmission Rate: %.3f Mbps",bw.f*8/1000000);
ND_PRINT("\n\t Wavelength: %u",
EXTRACT_BE_U_4(obj_tptr + 16));
break;
default:
hexdump=TRUE;
}
break;
case LMP_OBJ_VERIFY_BEGIN_ACK:
switch(lmp_obj_ctype) {
case LMP_CTYPE_1:
if (obj_tlen != 4) {
ND_PRINT(" (not correct for object)");
break;
}
ND_PRINT("\n\t Verify Dead Interval: %u"
"\n\t Verify Transport Response: %u",
EXTRACT_BE_U_2(obj_tptr),
EXTRACT_BE_U_2(obj_tptr + 2));
break;
default:
hexdump=TRUE;
}
break;
case LMP_OBJ_VERIFY_ID:
switch(lmp_obj_ctype) {
case LMP_CTYPE_1:
if (obj_tlen != 4) {
ND_PRINT(" (not correct for object)");
break;
}
ND_PRINT("\n\t Verify ID: %u",
EXTRACT_BE_U_4(obj_tptr));
break;
default:
hexdump=TRUE;
}
break;
case LMP_OBJ_CHANNEL_STATUS:
switch(lmp_obj_ctype) {
case LMP_CTYPE_IPV4:
offset = 0;
/* Decode pairs: <Interface_ID (4 bytes), Channel_status (4 bytes)> */
while (offset+8 <= obj_tlen) {
ND_PRINT("\n\t Interface ID: %s (0x%08x)",
ipaddr_string(ndo, obj_tptr+offset),
EXTRACT_BE_U_4(obj_tptr + offset));
ND_PRINT("\n\t\t Active: %s (%u)",
(EXTRACT_BE_U_4(obj_tptr + offset + 4)>>31) ?
"Allocated" : "Non-allocated",
(EXTRACT_BE_U_4(obj_tptr + offset + 4)>>31));
ND_PRINT("\n\t\t Direction: %s (%u)",
(EXTRACT_BE_U_4(obj_tptr + offset + 4)>>30)&0x1 ?
"Transmit" : "Receive",
(EXTRACT_BE_U_4(obj_tptr + offset + 4)>>30)&0x1);
ND_PRINT("\n\t\t Channel Status: %s (%u)",
tok2str(lmp_obj_channel_status_values,
"Unknown",
EXTRACT_BE_U_4(obj_tptr + offset + 4)&0x3FFFFFF),
EXTRACT_BE_U_4(obj_tptr + offset + 4)&0x3FFFFFF);
offset+=8;
}
break;
case LMP_CTYPE_IPV6:
offset = 0;
/* Decode pairs: <Interface_ID (16 bytes), Channel_status (4 bytes)> */
while (offset+20 <= obj_tlen) {
ND_PRINT("\n\t Interface ID: %s (0x%08x)",
ip6addr_string(ndo, obj_tptr+offset),
EXTRACT_BE_U_4(obj_tptr + offset));
ND_PRINT("\n\t\t Active: %s (%u)",
(EXTRACT_BE_U_4(obj_tptr + offset + 16)>>31) ?
"Allocated" : "Non-allocated",
(EXTRACT_BE_U_4(obj_tptr + offset + 16)>>31));
ND_PRINT("\n\t\t Direction: %s (%u)",
(EXTRACT_BE_U_4(obj_tptr + offset + 16)>>30)&0x1 ?
"Transmit" : "Receive",
(EXTRACT_BE_U_4(obj_tptr + offset + 16)>>30)&0x1);
ND_PRINT("\n\t\t Channel Status: %s (%u)",
tok2str(lmp_obj_channel_status_values,
"Unknown",
EXTRACT_BE_U_4(obj_tptr + offset + 16)&0x3FFFFFF),
EXTRACT_BE_U_4(obj_tptr + offset + 16)&0x3FFFFFF);
offset+=20;
}
break;
case LMP_CTYPE_UNMD:
offset = 0;
/* Decode pairs: <Interface_ID (4 bytes), Channel_status (4 bytes)> */
while (offset+8 <= obj_tlen) {
ND_PRINT("\n\t Interface ID: %u (0x%08x)",
EXTRACT_BE_U_4(obj_tptr + offset),
EXTRACT_BE_U_4(obj_tptr + offset));
ND_PRINT("\n\t\t Active: %s (%u)",
(EXTRACT_BE_U_4(obj_tptr + offset + 4)>>31) ?
"Allocated" : "Non-allocated",
(EXTRACT_BE_U_4(obj_tptr + offset + 4)>>31));
ND_PRINT("\n\t\t Direction: %s (%u)",
(EXTRACT_BE_U_4(obj_tptr + offset + 4)>>30)&0x1 ?
"Transmit" : "Receive",
(EXTRACT_BE_U_4(obj_tptr + offset + 4)>>30)&0x1);
ND_PRINT("\n\t\t Channel Status: %s (%u)",
tok2str(lmp_obj_channel_status_values,
"Unknown",
EXTRACT_BE_U_4(obj_tptr + offset + 4)&0x3FFFFFF),
EXTRACT_BE_U_4(obj_tptr + offset + 4)&0x3FFFFFF);
offset+=8;
}
break;
default:
hexdump=TRUE;
}
break;
case LMP_OBJ_CHANNEL_STATUS_REQ:
switch(lmp_obj_ctype) {
case LMP_CTYPE_IPV4:
offset = 0;
while (offset+4 <= obj_tlen) {
ND_PRINT("\n\t Interface ID: %s (0x%08x)",
ipaddr_string(ndo, obj_tptr+offset),
EXTRACT_BE_U_4(obj_tptr + offset));
offset+=4;
}
break;
case LMP_CTYPE_IPV6:
offset = 0;
while (offset+16 <= obj_tlen) {
ND_PRINT("\n\t Interface ID: %s (0x%08x)",
ip6addr_string(ndo, obj_tptr+offset),
EXTRACT_BE_U_4(obj_tptr + offset));
offset+=16;
}
break;
case LMP_CTYPE_UNMD:
offset = 0;
while (offset+4 <= obj_tlen) {
ND_PRINT("\n\t Interface ID: %u (0x%08x)",
EXTRACT_BE_U_4(obj_tptr + offset),
EXTRACT_BE_U_4(obj_tptr + offset));
offset+=4;
}
break;
default:
hexdump=TRUE;
}
break;
case LMP_OBJ_ERROR_CODE:
switch(lmp_obj_ctype) {
case LMP_CTYPE_BEGIN_VERIFY_ERROR:
if (obj_tlen != 4) {
ND_PRINT(" (not correct for object)");
break;
}
ND_PRINT("\n\t Error Code: %s",
bittok2str(lmp_obj_begin_verify_error_values,
"none",
EXTRACT_BE_U_4(obj_tptr)));
break;
case LMP_CTYPE_LINK_SUMMARY_ERROR:
if (obj_tlen != 4) {
ND_PRINT(" (not correct for object)");
break;
}
ND_PRINT("\n\t Error Code: %s",
bittok2str(lmp_obj_link_summary_error_values,
"none",
EXTRACT_BE_U_4(obj_tptr)));
break;
default:
hexdump=TRUE;
}
break;
case LMP_OBJ_SERVICE_CONFIG:
switch (lmp_obj_ctype) {
case LMP_CTYPE_SERVICE_CONFIG_SP:
if (obj_tlen != 4) {
ND_PRINT(" (not correct for object)");
break;
}
ND_PRINT("\n\t Flags: %s",
bittok2str(lmp_obj_service_config_sp_flag_values,
"none",
EXTRACT_U_1(obj_tptr)));
ND_PRINT("\n\t UNI Version: %u",
EXTRACT_U_1(obj_tptr + 1));
break;
case LMP_CTYPE_SERVICE_CONFIG_CPSA:
if (obj_tlen != 16) {
ND_PRINT(" (not correct for object)");
break;
}
link_type = EXTRACT_U_1(obj_tptr);
ND_PRINT("\n\t Link Type: %s (%u)",
tok2str(lmp_sd_service_config_cpsa_link_type_values,
"Unknown", link_type),
link_type);
switch (link_type) {
case LMP_SD_SERVICE_CONFIG_CPSA_LINK_TYPE_SDH:
ND_PRINT("\n\t Signal Type: %s (%u)",
tok2str(lmp_sd_service_config_cpsa_signal_type_sdh_values,
"Unknown",
EXTRACT_U_1(obj_tptr + 1)),
EXTRACT_U_1(obj_tptr + 1));
break;
case LMP_SD_SERVICE_CONFIG_CPSA_LINK_TYPE_SONET:
ND_PRINT("\n\t Signal Type: %s (%u)",
tok2str(lmp_sd_service_config_cpsa_signal_type_sonet_values,
"Unknown",
EXTRACT_U_1(obj_tptr + 1)),
EXTRACT_U_1(obj_tptr + 1));
break;
}
ND_PRINT("\n\t Transparency: %s",
bittok2str(lmp_obj_service_config_cpsa_tp_flag_values,
"none",
EXTRACT_U_1(obj_tptr + 2)));
ND_PRINT("\n\t Contiguous Concatenation Types: %s",
bittok2str(lmp_obj_service_config_cpsa_cct_flag_values,
"none",
EXTRACT_U_1(obj_tptr + 3)));
ND_PRINT("\n\t Minimum NCC: %u",
EXTRACT_BE_U_2(obj_tptr + 4));
ND_PRINT("\n\t Maximum NCC: %u",
EXTRACT_BE_U_2(obj_tptr + 6));
ND_PRINT("\n\t Minimum NVC:%u",
EXTRACT_BE_U_2(obj_tptr + 8));
ND_PRINT("\n\t Maximum NVC:%u",
EXTRACT_BE_U_2(obj_tptr + 10));
ND_PRINT("\n\t Local Interface ID: %s (0x%08x)",
ipaddr_string(ndo, obj_tptr+12),
EXTRACT_BE_U_4(obj_tptr + 12));
break;
case LMP_CTYPE_SERVICE_CONFIG_TRANSPARENCY_TCM:
if (obj_tlen != 8) {
ND_PRINT(" (not correct for object)");
break;
}
ND_PRINT("\n\t Transparency Flags: %s",
bittok2str(
lmp_obj_service_config_nsa_transparency_flag_values,
"none",
EXTRACT_BE_U_4(obj_tptr)));
ND_PRINT("\n\t TCM Monitoring Flags: %s",
bittok2str(
lmp_obj_service_config_nsa_tcm_flag_values,
"none",
EXTRACT_U_1(obj_tptr + 7)));
break;
case LMP_CTYPE_SERVICE_CONFIG_NETWORK_DIVERSITY:
if (obj_tlen != 4) {
ND_PRINT(" (not correct for object)");
break;
}
ND_PRINT("\n\t Diversity: Flags: %s",
bittok2str(
lmp_obj_service_config_nsa_network_diversity_flag_values,
"none",
EXTRACT_U_1(obj_tptr + 3)));
break;
default:
hexdump = TRUE;
}
break;
default:
if (ndo->ndo_vflag <= 1)
print_unknown_data(ndo,obj_tptr,"\n\t ",obj_tlen);
break;
}
/* do we want to see an additionally hexdump ? */
if (ndo->ndo_vflag > 1 || hexdump==TRUE)
print_unknown_data(ndo,tptr+sizeof(struct lmp_object_header),"\n\t ",
lmp_obj_len-sizeof(struct lmp_object_header));
if (tlen < lmp_obj_len) {
ND_PRINT(" [remaining objects length %u < %u]", tlen, lmp_obj_len);
nd_print_invalid(ndo);
break;
}
tptr+=lmp_obj_len;
tlen-=lmp_obj_len;
}
return;
trunc:
nd_print_trunc(ndo);
}
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