Changeset View
Changeset View
Standalone View
Standalone View
head/contrib/tcpdump/print-bootp.c
Show All 29 Lines | |||||
#include <tcpdump-stdinc.h> | #include <tcpdump-stdinc.h> | ||||
#include <string.h> | #include <string.h> | ||||
#include "interface.h" | #include "interface.h" | ||||
#include "addrtoname.h" | #include "addrtoname.h" | ||||
#include "extract.h" | #include "extract.h" | ||||
#include "bootp.h" | |||||
static const char tstr[] = " [|bootp]"; | static const char tstr[] = " [|bootp]"; | ||||
/* | |||||
* Bootstrap Protocol (BOOTP). RFC951 and RFC1048. | |||||
* | |||||
* This file specifies the "implementation-independent" BOOTP protocol | |||||
* information which is common to both client and server. | |||||
* | |||||
* Copyright 1988 by Carnegie Mellon. | |||||
* | |||||
* Permission to use, copy, modify, and distribute this program for any | |||||
* purpose and without fee is hereby granted, provided that this copyright | |||||
* and permission notice appear on all copies and supporting documentation, | |||||
* the name of Carnegie Mellon not be used in advertising or publicity | |||||
* pertaining to distribution of the program without specific prior | |||||
* permission, and notice be given in supporting documentation that copying | |||||
* and distribution is by permission of Carnegie Mellon and Stanford | |||||
* University. Carnegie Mellon makes no representations about the | |||||
* suitability of this software for any purpose. It is provided "as is" | |||||
* without express or implied warranty. | |||||
*/ | |||||
struct bootp { | |||||
uint8_t bp_op; /* packet opcode type */ | |||||
uint8_t bp_htype; /* hardware addr type */ | |||||
uint8_t bp_hlen; /* hardware addr length */ | |||||
uint8_t bp_hops; /* gateway hops */ | |||||
uint32_t bp_xid; /* transaction ID */ | |||||
uint16_t bp_secs; /* seconds since boot began */ | |||||
uint16_t bp_flags; /* flags - see bootp_flag_values[] | |||||
in print-bootp.c */ | |||||
struct in_addr bp_ciaddr; /* client IP address */ | |||||
struct in_addr bp_yiaddr; /* 'your' IP address */ | |||||
struct in_addr bp_siaddr; /* server IP address */ | |||||
struct in_addr bp_giaddr; /* gateway IP address */ | |||||
uint8_t bp_chaddr[16]; /* client hardware address */ | |||||
uint8_t bp_sname[64]; /* server host name */ | |||||
uint8_t bp_file[128]; /* boot file name */ | |||||
uint8_t bp_vend[64]; /* vendor-specific area */ | |||||
} UNALIGNED; | |||||
#define BOOTPREPLY 2 | |||||
#define BOOTPREQUEST 1 | |||||
/* | |||||
* Vendor magic cookie (v_magic) for CMU | |||||
*/ | |||||
#define VM_CMU "CMU" | |||||
/* | |||||
* Vendor magic cookie (v_magic) for RFC1048 | |||||
*/ | |||||
#define VM_RFC1048 { 99, 130, 83, 99 } | |||||
/* | |||||
* RFC1048 tag values used to specify what information is being supplied in | |||||
* the vendor field of the packet. | |||||
*/ | |||||
#define TAG_PAD ((uint8_t) 0) | |||||
#define TAG_SUBNET_MASK ((uint8_t) 1) | |||||
#define TAG_TIME_OFFSET ((uint8_t) 2) | |||||
#define TAG_GATEWAY ((uint8_t) 3) | |||||
#define TAG_TIME_SERVER ((uint8_t) 4) | |||||
#define TAG_NAME_SERVER ((uint8_t) 5) | |||||
#define TAG_DOMAIN_SERVER ((uint8_t) 6) | |||||
#define TAG_LOG_SERVER ((uint8_t) 7) | |||||
#define TAG_COOKIE_SERVER ((uint8_t) 8) | |||||
#define TAG_LPR_SERVER ((uint8_t) 9) | |||||
#define TAG_IMPRESS_SERVER ((uint8_t) 10) | |||||
#define TAG_RLP_SERVER ((uint8_t) 11) | |||||
#define TAG_HOSTNAME ((uint8_t) 12) | |||||
#define TAG_BOOTSIZE ((uint8_t) 13) | |||||
#define TAG_END ((uint8_t) 255) | |||||
/* RFC1497 tags */ | |||||
#define TAG_DUMPPATH ((uint8_t) 14) | |||||
#define TAG_DOMAINNAME ((uint8_t) 15) | |||||
#define TAG_SWAP_SERVER ((uint8_t) 16) | |||||
#define TAG_ROOTPATH ((uint8_t) 17) | |||||
#define TAG_EXTPATH ((uint8_t) 18) | |||||
/* RFC2132 */ | |||||
#define TAG_IP_FORWARD ((uint8_t) 19) | |||||
#define TAG_NL_SRCRT ((uint8_t) 20) | |||||
#define TAG_PFILTERS ((uint8_t) 21) | |||||
#define TAG_REASS_SIZE ((uint8_t) 22) | |||||
#define TAG_DEF_TTL ((uint8_t) 23) | |||||
#define TAG_MTU_TIMEOUT ((uint8_t) 24) | |||||
#define TAG_MTU_TABLE ((uint8_t) 25) | |||||
#define TAG_INT_MTU ((uint8_t) 26) | |||||
#define TAG_LOCAL_SUBNETS ((uint8_t) 27) | |||||
#define TAG_BROAD_ADDR ((uint8_t) 28) | |||||
#define TAG_DO_MASK_DISC ((uint8_t) 29) | |||||
#define TAG_SUPPLY_MASK ((uint8_t) 30) | |||||
#define TAG_DO_RDISC ((uint8_t) 31) | |||||
#define TAG_RTR_SOL_ADDR ((uint8_t) 32) | |||||
#define TAG_STATIC_ROUTE ((uint8_t) 33) | |||||
#define TAG_USE_TRAILERS ((uint8_t) 34) | |||||
#define TAG_ARP_TIMEOUT ((uint8_t) 35) | |||||
#define TAG_ETH_ENCAP ((uint8_t) 36) | |||||
#define TAG_TCP_TTL ((uint8_t) 37) | |||||
#define TAG_TCP_KEEPALIVE ((uint8_t) 38) | |||||
#define TAG_KEEPALIVE_GO ((uint8_t) 39) | |||||
#define TAG_NIS_DOMAIN ((uint8_t) 40) | |||||
#define TAG_NIS_SERVERS ((uint8_t) 41) | |||||
#define TAG_NTP_SERVERS ((uint8_t) 42) | |||||
#define TAG_VENDOR_OPTS ((uint8_t) 43) | |||||
#define TAG_NETBIOS_NS ((uint8_t) 44) | |||||
#define TAG_NETBIOS_DDS ((uint8_t) 45) | |||||
#define TAG_NETBIOS_NODE ((uint8_t) 46) | |||||
#define TAG_NETBIOS_SCOPE ((uint8_t) 47) | |||||
#define TAG_XWIN_FS ((uint8_t) 48) | |||||
#define TAG_XWIN_DM ((uint8_t) 49) | |||||
#define TAG_NIS_P_DOMAIN ((uint8_t) 64) | |||||
#define TAG_NIS_P_SERVERS ((uint8_t) 65) | |||||
#define TAG_MOBILE_HOME ((uint8_t) 68) | |||||
#define TAG_SMPT_SERVER ((uint8_t) 69) | |||||
#define TAG_POP3_SERVER ((uint8_t) 70) | |||||
#define TAG_NNTP_SERVER ((uint8_t) 71) | |||||
#define TAG_WWW_SERVER ((uint8_t) 72) | |||||
#define TAG_FINGER_SERVER ((uint8_t) 73) | |||||
#define TAG_IRC_SERVER ((uint8_t) 74) | |||||
#define TAG_STREETTALK_SRVR ((uint8_t) 75) | |||||
#define TAG_STREETTALK_STDA ((uint8_t) 76) | |||||
/* DHCP options */ | |||||
#define TAG_REQUESTED_IP ((uint8_t) 50) | |||||
#define TAG_IP_LEASE ((uint8_t) 51) | |||||
#define TAG_OPT_OVERLOAD ((uint8_t) 52) | |||||
#define TAG_TFTP_SERVER ((uint8_t) 66) | |||||
#define TAG_BOOTFILENAME ((uint8_t) 67) | |||||
#define TAG_DHCP_MESSAGE ((uint8_t) 53) | |||||
#define TAG_SERVER_ID ((uint8_t) 54) | |||||
#define TAG_PARM_REQUEST ((uint8_t) 55) | |||||
#define TAG_MESSAGE ((uint8_t) 56) | |||||
#define TAG_MAX_MSG_SIZE ((uint8_t) 57) | |||||
#define TAG_RENEWAL_TIME ((uint8_t) 58) | |||||
#define TAG_REBIND_TIME ((uint8_t) 59) | |||||
#define TAG_VENDOR_CLASS ((uint8_t) 60) | |||||
#define TAG_CLIENT_ID ((uint8_t) 61) | |||||
/* RFC 2241 */ | |||||
#define TAG_NDS_SERVERS ((uint8_t) 85) | |||||
#define TAG_NDS_TREE_NAME ((uint8_t) 86) | |||||
#define TAG_NDS_CONTEXT ((uint8_t) 87) | |||||
/* RFC 2242 */ | |||||
#define TAG_NDS_IPDOMAIN ((uint8_t) 62) | |||||
#define TAG_NDS_IPINFO ((uint8_t) 63) | |||||
/* RFC 2485 */ | |||||
#define TAG_OPEN_GROUP_UAP ((uint8_t) 98) | |||||
/* RFC 2563 */ | |||||
#define TAG_DISABLE_AUTOCONF ((uint8_t) 116) | |||||
/* RFC 2610 */ | |||||
#define TAG_SLP_DA ((uint8_t) 78) | |||||
#define TAG_SLP_SCOPE ((uint8_t) 79) | |||||
/* RFC 2937 */ | |||||
#define TAG_NS_SEARCH ((uint8_t) 117) | |||||
/* RFC 3004 - The User Class Option for DHCP */ | |||||
#define TAG_USER_CLASS ((uint8_t) 77) | |||||
/* RFC 3011 */ | |||||
#define TAG_IP4_SUBNET_SELECT ((uint8_t) 118) | |||||
/* RFC 3442 */ | |||||
#define TAG_CLASSLESS_STATIC_RT ((uint8_t) 121) | |||||
#define TAG_CLASSLESS_STA_RT_MS ((uint8_t) 249) | |||||
/* RFC 5859 - TFTP Server Address Option for DHCPv4 */ | |||||
#define TAG_TFTP_SERVER_ADDRESS ((uint8_t) 150) | |||||
/* ftp://ftp.isi.edu/.../assignments/bootp-dhcp-extensions */ | |||||
#define TAG_SLP_NAMING_AUTH ((uint8_t) 80) | |||||
#define TAG_CLIENT_FQDN ((uint8_t) 81) | |||||
#define TAG_AGENT_CIRCUIT ((uint8_t) 82) | |||||
#define TAG_AGENT_REMOTE ((uint8_t) 83) | |||||
#define TAG_AGENT_MASK ((uint8_t) 84) | |||||
#define TAG_TZ_STRING ((uint8_t) 88) | |||||
#define TAG_FQDN_OPTION ((uint8_t) 89) | |||||
#define TAG_AUTH ((uint8_t) 90) | |||||
#define TAG_VINES_SERVERS ((uint8_t) 91) | |||||
#define TAG_SERVER_RANK ((uint8_t) 92) | |||||
#define TAG_CLIENT_ARCH ((uint8_t) 93) | |||||
#define TAG_CLIENT_NDI ((uint8_t) 94) | |||||
#define TAG_CLIENT_GUID ((uint8_t) 97) | |||||
#define TAG_LDAP_URL ((uint8_t) 95) | |||||
#define TAG_6OVER4 ((uint8_t) 96) | |||||
#define TAG_PRINTER_NAME ((uint8_t) 100) | |||||
#define TAG_MDHCP_SERVER ((uint8_t) 101) | |||||
#define TAG_IPX_COMPAT ((uint8_t) 110) | |||||
#define TAG_NETINFO_PARENT ((uint8_t) 112) | |||||
#define TAG_NETINFO_PARENT_TAG ((uint8_t) 113) | |||||
#define TAG_URL ((uint8_t) 114) | |||||
#define TAG_FAILOVER ((uint8_t) 115) | |||||
#define TAG_EXTENDED_REQUEST ((uint8_t) 126) | |||||
#define TAG_EXTENDED_OPTION ((uint8_t) 127) | |||||
/* DHCP Message types (values for TAG_DHCP_MESSAGE option) */ | |||||
#define DHCPDISCOVER 1 | |||||
#define DHCPOFFER 2 | |||||
#define DHCPREQUEST 3 | |||||
#define DHCPDECLINE 4 | |||||
#define DHCPACK 5 | |||||
#define DHCPNAK 6 | |||||
#define DHCPRELEASE 7 | |||||
#define DHCPINFORM 8 | |||||
/* | |||||
* "vendor" data permitted for CMU bootp clients. | |||||
*/ | |||||
struct cmu_vend { | |||||
uint8_t v_magic[4]; /* magic number */ | |||||
uint32_t v_flags; /* flags/opcodes, etc. */ | |||||
struct in_addr v_smask; /* Subnet mask */ | |||||
struct in_addr v_dgate; /* Default gateway */ | |||||
struct in_addr v_dns1, v_dns2; /* Domain name servers */ | |||||
struct in_addr v_ins1, v_ins2; /* IEN-116 name servers */ | |||||
struct in_addr v_ts1, v_ts2; /* Time servers */ | |||||
uint8_t v_unused[24]; /* currently unused */ | |||||
} UNALIGNED; | |||||
/* v_flags values */ | |||||
#define VF_SMASK 1 /* Subnet mask field contains valid data */ | |||||
/* RFC 4702 DHCP Client FQDN Option */ | |||||
#define CLIENT_FQDN_FLAGS_S 0x01 | |||||
#define CLIENT_FQDN_FLAGS_O 0x02 | |||||
#define CLIENT_FQDN_FLAGS_E 0x04 | |||||
#define CLIENT_FQDN_FLAGS_N 0x08 | |||||
/* end of original bootp.h */ | |||||
static void rfc1048_print(netdissect_options *, const u_char *); | static void rfc1048_print(netdissect_options *, const u_char *); | ||||
static void cmu_print(netdissect_options *, const u_char *); | static void cmu_print(netdissect_options *, const u_char *); | ||||
static char *client_fqdn_flags(u_int flags); | static char *client_fqdn_flags(u_int flags); | ||||
static const struct tok bootp_flag_values[] = { | static const struct tok bootp_flag_values[] = { | ||||
{ 0x8000, "Broadcast" }, | { 0x8000, "Broadcast" }, | ||||
{ 0, NULL} | { 0, NULL} | ||||
}; | }; | ||||
static const struct tok bootp_op_values[] = { | static const struct tok bootp_op_values[] = { | ||||
{ BOOTPREQUEST, "Request" }, | { BOOTPREQUEST, "Request" }, | ||||
{ BOOTPREPLY, "Reply" }, | { BOOTPREPLY, "Reply" }, | ||||
{ 0, NULL} | { 0, NULL} | ||||
}; | }; | ||||
/* | /* | ||||
* Print bootp requests | * Print bootp requests | ||||
*/ | */ | ||||
void | void | ||||
bootp_print(netdissect_options *ndo, | bootp_print(netdissect_options *ndo, | ||||
register const u_char *cp, u_int length) | register const u_char *cp, u_int length) | ||||
{ | { | ||||
register const struct bootp *bp; | register const struct bootp *bp; | ||||
static const u_char vm_cmu[4] = VM_CMU; | static const u_char vm_cmu[4] = VM_CMU; | ||||
static const u_char vm_rfc1048[4] = VM_RFC1048; | static const u_char vm_rfc1048[4] = VM_RFC1048; | ||||
bp = (const struct bootp *)cp; | bp = (const struct bootp *)cp; | ||||
ND_TCHECK(bp->bp_op); | ND_TCHECK(bp->bp_op); | ||||
ND_PRINT((ndo, "BOOTP/DHCP, %s", | ND_PRINT((ndo, "BOOTP/DHCP, %s", | ||||
tok2str(bootp_op_values, "unknown (0x%02x)", bp->bp_op))); | tok2str(bootp_op_values, "unknown (0x%02x)", bp->bp_op))); | ||||
if (bp->bp_htype == 1 && bp->bp_hlen == 6 && bp->bp_op == BOOTPREQUEST) { | if (bp->bp_htype == 1 && bp->bp_hlen == 6 && bp->bp_op == BOOTPREQUEST) { | ||||
ND_TCHECK2(bp->bp_chaddr[0], 6); | ND_TCHECK2(bp->bp_chaddr[0], 6); | ||||
ND_PRINT((ndo, " from %s", etheraddr_string(ndo, bp->bp_chaddr))); | ND_PRINT((ndo, " from %s", etheraddr_string(ndo, bp->bp_chaddr))); | ||||
} | } | ||||
ND_PRINT((ndo, ", length %u", length)); | ND_PRINT((ndo, ", length %u", length)); | ||||
Show All 14 Lines | bootp_print(netdissect_options *ndo, | ||||
if (bp->bp_hops) | if (bp->bp_hops) | ||||
ND_PRINT((ndo, ", hops %d", bp->bp_hops)); | ND_PRINT((ndo, ", hops %d", bp->bp_hops)); | ||||
if (EXTRACT_32BITS(&bp->bp_xid)) | if (EXTRACT_32BITS(&bp->bp_xid)) | ||||
ND_PRINT((ndo, ", xid 0x%x", EXTRACT_32BITS(&bp->bp_xid))); | ND_PRINT((ndo, ", xid 0x%x", EXTRACT_32BITS(&bp->bp_xid))); | ||||
if (EXTRACT_16BITS(&bp->bp_secs)) | if (EXTRACT_16BITS(&bp->bp_secs)) | ||||
ND_PRINT((ndo, ", secs %d", EXTRACT_16BITS(&bp->bp_secs))); | ND_PRINT((ndo, ", secs %d", EXTRACT_16BITS(&bp->bp_secs))); | ||||
ND_PRINT((ndo, ", Flags [%s]", | ND_PRINT((ndo, ", Flags [%s]", | ||||
bittok2str(bootp_flag_values, "none", EXTRACT_16BITS(&bp->bp_flags)))); | bittok2str(bootp_flag_values, "none", EXTRACT_16BITS(&bp->bp_flags)))); | ||||
if (ndo->ndo_vflag > 1) | if (ndo->ndo_vflag > 1) | ||||
ND_PRINT((ndo, " (0x%04x)", EXTRACT_16BITS(&bp->bp_flags))); | ND_PRINT((ndo, " (0x%04x)", EXTRACT_16BITS(&bp->bp_flags))); | ||||
/* Client's ip address */ | /* Client's ip address */ | ||||
ND_TCHECK(bp->bp_ciaddr); | ND_TCHECK(bp->bp_ciaddr); | ||||
if (EXTRACT_32BITS(&bp->bp_ciaddr.s_addr)) | if (EXTRACT_32BITS(&bp->bp_ciaddr.s_addr)) | ||||
ND_PRINT((ndo, "\n\t Client-IP %s", ipaddr_string(ndo, &bp->bp_ciaddr))); | ND_PRINT((ndo, "\n\t Client-IP %s", ipaddr_string(ndo, &bp->bp_ciaddr))); | ||||
Show All 37 Lines | if (fn_print(ndo, bp->bp_file, ndo->ndo_snapend)) { | ||||
return; | return; | ||||
} | } | ||||
ND_PRINT((ndo, "\"")); | ND_PRINT((ndo, "\"")); | ||||
} | } | ||||
/* Decode the vendor buffer */ | /* Decode the vendor buffer */ | ||||
ND_TCHECK(bp->bp_vend[0]); | ND_TCHECK(bp->bp_vend[0]); | ||||
if (memcmp((const char *)bp->bp_vend, vm_rfc1048, | if (memcmp((const char *)bp->bp_vend, vm_rfc1048, | ||||
sizeof(uint32_t)) == 0) | sizeof(uint32_t)) == 0) | ||||
rfc1048_print(ndo, bp->bp_vend); | rfc1048_print(ndo, bp->bp_vend); | ||||
else if (memcmp((const char *)bp->bp_vend, vm_cmu, | else if (memcmp((const char *)bp->bp_vend, vm_cmu, | ||||
sizeof(uint32_t)) == 0) | sizeof(uint32_t)) == 0) | ||||
cmu_print(ndo, bp->bp_vend); | cmu_print(ndo, bp->bp_vend); | ||||
else { | else { | ||||
uint32_t ul; | uint32_t ul; | ||||
ul = EXTRACT_32BITS(&bp->bp_vend); | ul = EXTRACT_32BITS(&bp->bp_vend); | ||||
if (ul != 0) | if (ul != 0) | ||||
ND_PRINT((ndo, "\n\t Vendor-#0x%x", ul)); | ND_PRINT((ndo, "\n\t Vendor-#0x%x", ul)); | ||||
} | } | ||||
▲ Show 20 Lines • Show All 100 Lines • ▼ Show 20 Lines | /* RFC 2485 */ | ||||
{ TAG_OPEN_GROUP_UAP, "aUAP" }, | { TAG_OPEN_GROUP_UAP, "aUAP" }, | ||||
/* RFC 2563 */ | /* RFC 2563 */ | ||||
{ TAG_DISABLE_AUTOCONF, "BNOAUTO" }, | { TAG_DISABLE_AUTOCONF, "BNOAUTO" }, | ||||
/* RFC 2610 */ | /* RFC 2610 */ | ||||
{ TAG_SLP_DA, "bSLP-DA" }, /*"b" is a little wrong */ | { TAG_SLP_DA, "bSLP-DA" }, /*"b" is a little wrong */ | ||||
{ TAG_SLP_SCOPE, "bSLP-SCOPE" }, /*"b" is a little wrong */ | { TAG_SLP_SCOPE, "bSLP-SCOPE" }, /*"b" is a little wrong */ | ||||
/* RFC 2937 */ | /* RFC 2937 */ | ||||
{ TAG_NS_SEARCH, "sNSSEARCH" }, /* XXX 's' */ | { TAG_NS_SEARCH, "sNSSEARCH" }, /* XXX 's' */ | ||||
/* RFC 3004 - The User Class Option for DHCP */ | |||||
{ TAG_USER_CLASS, "$User-Class" }, | |||||
/* RFC 3011 */ | /* RFC 3011 */ | ||||
{ TAG_IP4_SUBNET_SELECT, "iSUBNET" }, | { TAG_IP4_SUBNET_SELECT, "iSUBNET" }, | ||||
/* RFC 3442 */ | /* RFC 3442 */ | ||||
{ TAG_CLASSLESS_STATIC_RT, "$Classless-Static-Route" }, | { TAG_CLASSLESS_STATIC_RT, "$Classless-Static-Route" }, | ||||
{ TAG_CLASSLESS_STA_RT_MS, "$Classless-Static-Route-Microsoft" }, | { TAG_CLASSLESS_STA_RT_MS, "$Classless-Static-Route-Microsoft" }, | ||||
/* RFC 5859 - TFTP Server Address Option for DHCPv4 */ | |||||
{ TAG_TFTP_SERVER_ADDRESS, "iTFTP-Server-Address" }, | |||||
/* http://www.iana.org/assignments/bootp-dhcp-extensions/index.htm */ | /* http://www.iana.org/assignments/bootp-dhcp-extensions/index.htm */ | ||||
{ TAG_USER_CLASS, "aCLASS" }, | |||||
{ TAG_SLP_NAMING_AUTH, "aSLP-NA" }, | { TAG_SLP_NAMING_AUTH, "aSLP-NA" }, | ||||
{ TAG_CLIENT_FQDN, "$FQDN" }, | { TAG_CLIENT_FQDN, "$FQDN" }, | ||||
{ TAG_AGENT_CIRCUIT, "$Agent-Information" }, | { TAG_AGENT_CIRCUIT, "$Agent-Information" }, | ||||
{ TAG_AGENT_REMOTE, "bARMT" }, | { TAG_AGENT_REMOTE, "bARMT" }, | ||||
{ TAG_AGENT_MASK, "bAMSK" }, | { TAG_AGENT_MASK, "bAMSK" }, | ||||
{ TAG_TZ_STRING, "aTZSTR" }, | { TAG_TZ_STRING, "aTZSTR" }, | ||||
{ TAG_FQDN_OPTION, "bFQDNS" }, /* XXX 'b' */ | { TAG_FQDN_OPTION, "bFQDNS" }, /* XXX 'b' */ | ||||
{ TAG_AUTH, "bAUTH" }, /* XXX 'b' */ | { TAG_AUTH, "bAUTH" }, /* XXX 'b' */ | ||||
{ TAG_VINES_SERVERS, "iVINES" }, | { TAG_VINES_SERVERS, "iVINES" }, | ||||
{ TAG_SERVER_RANK, "sRANK" }, | { TAG_SERVER_RANK, "sRANK" }, | ||||
{ TAG_CLIENT_ARCH, "sARCH" }, | { TAG_CLIENT_ARCH, "sARCH" }, | ||||
{ TAG_CLIENT_NDI, "bNDI" }, /* XXX 'b' */ | { TAG_CLIENT_NDI, "bNDI" }, /* XXX 'b' */ | ||||
{ TAG_CLIENT_GUID, "bGUID" }, /* XXX 'b' */ | { TAG_CLIENT_GUID, "bGUID" }, /* XXX 'b' */ | ||||
{ TAG_LDAP_URL, "aLDAP" }, | { TAG_LDAP_URL, "aLDAP" }, | ||||
{ TAG_6OVER4, "i6o4" }, | { TAG_6OVER4, "i6o4" }, | ||||
{ TAG_PRINTER_NAME, "aPRTR" }, | { TAG_PRINTER_NAME, "aPRTR" }, | ||||
{ TAG_MDHCP_SERVER, "bMDHCP" }, /* XXX 'b' */ | { TAG_MDHCP_SERVER, "bMDHCP" }, /* XXX 'b' */ | ||||
{ TAG_IPX_COMPAT, "bIPX" }, /* XXX 'b' */ | { TAG_IPX_COMPAT, "bIPX" }, /* XXX 'b' */ | ||||
{ TAG_NETINFO_PARENT, "iNI" }, | { TAG_NETINFO_PARENT, "iNI" }, | ||||
{ TAG_NETINFO_PARENT_TAG, "aNITAG" }, | { TAG_NETINFO_PARENT_TAG, "aNITAG" }, | ||||
{ TAG_URL, "aURL" }, | { TAG_URL, "aURL" }, | ||||
{ TAG_FAILOVER, "bFAIL" }, /* XXX 'b' */ | { TAG_FAILOVER, "bFAIL" }, /* XXX 'b' */ | ||||
{ 0, NULL } | { 0, NULL } | ||||
}; | }; | ||||
/* 2-byte extended tags */ | /* 2-byte extended tags */ | ||||
static const struct tok xtag2str[] = { | static const struct tok xtag2str[] = { | ||||
{ 0, NULL } | { 0, NULL } | ||||
}; | }; | ||||
/* DHCP "options overload" types */ | /* DHCP "options overload" types */ | ||||
static const struct tok oo2str[] = { | static const struct tok oo2str[] = { | ||||
{ 1, "file" }, | { 1, "file" }, | ||||
{ 2, "sname" }, | { 2, "sname" }, | ||||
{ 3, "file+sname" }, | { 3, "file+sname" }, | ||||
{ 0, NULL } | { 0, NULL } | ||||
}; | }; | ||||
/* NETBIOS over TCP/IP node type options */ | /* NETBIOS over TCP/IP node type options */ | ||||
static const struct tok nbo2str[] = { | static const struct tok nbo2str[] = { | ||||
{ 0x1, "b-node" }, | { 0x1, "b-node" }, | ||||
{ 0x2, "p-node" }, | { 0x2, "p-node" }, | ||||
{ 0x4, "m-node" }, | { 0x4, "m-node" }, | ||||
{ 0x8, "h-node" }, | { 0x8, "h-node" }, | ||||
{ 0, NULL } | { 0, NULL } | ||||
}; | }; | ||||
/* ARP Hardware types, for Client-ID option */ | /* ARP Hardware types, for Client-ID option */ | ||||
static const struct tok arp2str[] = { | static const struct tok arp2str[] = { | ||||
{ 0x1, "ether" }, | { 0x1, "ether" }, | ||||
{ 0x6, "ieee802" }, | { 0x6, "ieee802" }, | ||||
{ 0x7, "arcnet" }, | { 0x7, "arcnet" }, | ||||
{ 0xf, "frelay" }, | { 0xf, "frelay" }, | ||||
{ 0x17, "strip" }, | { 0x17, "strip" }, | ||||
{ 0x18, "ieee1394" }, | { 0x18, "ieee1394" }, | ||||
{ 0, NULL } | { 0, NULL } | ||||
}; | }; | ||||
static const struct tok dhcp_msg_values[] = { | static const struct tok dhcp_msg_values[] = { | ||||
{ DHCPDISCOVER, "Discover" }, | { DHCPDISCOVER, "Discover" }, | ||||
{ DHCPOFFER, "Offer" }, | { DHCPOFFER, "Offer" }, | ||||
{ DHCPREQUEST, "Request" }, | { DHCPREQUEST, "Request" }, | ||||
{ DHCPDECLINE, "Decline" }, | { DHCPDECLINE, "Decline" }, | ||||
{ DHCPACK, "ACK" }, | { DHCPACK, "ACK" }, | ||||
{ DHCPNAK, "NACK" }, | { DHCPNAK, "NACK" }, | ||||
{ DHCPRELEASE, "Release" }, | { DHCPRELEASE, "Release" }, | ||||
{ DHCPINFORM, "Inform" }, | { DHCPINFORM, "Inform" }, | ||||
{ 0, NULL } | { 0, NULL } | ||||
}; | }; | ||||
#define AGENT_SUBOPTION_CIRCUIT_ID 1 /* RFC 3046 */ | #define AGENT_SUBOPTION_CIRCUIT_ID 1 /* RFC 3046 */ | ||||
#define AGENT_SUBOPTION_REMOTE_ID 2 /* RFC 3046 */ | #define AGENT_SUBOPTION_REMOTE_ID 2 /* RFC 3046 */ | ||||
#define AGENT_SUBOPTION_SUBSCRIBER_ID 6 /* RFC 3993 */ | #define AGENT_SUBOPTION_SUBSCRIBER_ID 6 /* RFC 3993 */ | ||||
static const struct tok agent_suboption_values[] = { | static const struct tok agent_suboption_values[] = { | ||||
{ AGENT_SUBOPTION_CIRCUIT_ID, "Circuit-ID" }, | { AGENT_SUBOPTION_CIRCUIT_ID, "Circuit-ID" }, | ||||
{ AGENT_SUBOPTION_REMOTE_ID, "Remote-ID" }, | { AGENT_SUBOPTION_REMOTE_ID, "Remote-ID" }, | ||||
{ AGENT_SUBOPTION_SUBSCRIBER_ID, "Subscriber-ID" }, | { AGENT_SUBOPTION_SUBSCRIBER_ID, "Subscriber-ID" }, | ||||
{ 0, NULL } | { 0, NULL } | ||||
}; | }; | ||||
static void | static void | ||||
rfc1048_print(netdissect_options *ndo, | rfc1048_print(netdissect_options *ndo, | ||||
register const u_char *bp) | register const u_char *bp) | ||||
{ | { | ||||
register uint16_t tag; | register uint16_t tag; | ||||
register u_int len; | register u_int len; | ||||
register const char *cp; | register const char *cp; | ||||
register char c; | register char c; | ||||
int first, idx; | int first, idx; | ||||
uint32_t ul; | uint32_t ul; | ||||
uint16_t us; | uint16_t us; | ||||
Show All 28 Lines | if (tag == TAG_PAD || tag == TAG_END) | ||||
len = 0; | len = 0; | ||||
else { | else { | ||||
/* Get the length; check for truncation */ | /* Get the length; check for truncation */ | ||||
ND_TCHECK2(*bp, 1); | ND_TCHECK2(*bp, 1); | ||||
len = *bp++; | len = *bp++; | ||||
} | } | ||||
ND_PRINT((ndo, "\n\t %s Option %u, length %u%s", cp, tag, len, | ND_PRINT((ndo, "\n\t %s Option %u, length %u%s", cp, tag, len, | ||||
len > 0 ? ": " : "")); | len > 0 ? ": " : "")); | ||||
if (tag == TAG_PAD && ndo->ndo_vflag > 2) { | if (tag == TAG_PAD && ndo->ndo_vflag > 2) { | ||||
u_int ntag = 1; | u_int ntag = 1; | ||||
while (ND_TTEST2(*bp, 1) && *bp == TAG_PAD) { | while (ND_TTEST2(*bp, 1) && *bp == TAG_PAD) { | ||||
bp++; | bp++; | ||||
ntag++; | ntag++; | ||||
} | } | ||||
if (ntag > 1) | if (ntag > 1) | ||||
▲ Show 20 Lines • Show All 156 Lines • ▼ Show 20 Lines | default: | ||||
break; | break; | ||||
case '$': | case '$': | ||||
/* Guys we can't handle with one of the usual cases */ | /* Guys we can't handle with one of the usual cases */ | ||||
switch (tag) { | switch (tag) { | ||||
case TAG_NETBIOS_NODE: | case TAG_NETBIOS_NODE: | ||||
/* this option should be at least 1 byte long */ | /* this option should be at least 1 byte long */ | ||||
if (len < 1) { | if (len < 1) { | ||||
ND_PRINT((ndo, "ERROR: option %u len %u < 1 bytes", | ND_PRINT((ndo, "ERROR: length < 1 bytes")); | ||||
TAG_NETBIOS_NODE, len)); | |||||
break; | break; | ||||
} | } | ||||
tag = *bp++; | tag = *bp++; | ||||
--len; | --len; | ||||
ND_PRINT((ndo, "%s", tok2str(nbo2str, NULL, tag))); | ND_PRINT((ndo, "%s", tok2str(nbo2str, NULL, tag))); | ||||
break; | break; | ||||
case TAG_OPT_OVERLOAD: | case TAG_OPT_OVERLOAD: | ||||
/* this option should be at least 1 byte long */ | /* this option should be at least 1 byte long */ | ||||
if (len < 1) { | if (len < 1) { | ||||
ND_PRINT((ndo, "ERROR: option %u len %u < 1 bytes", | ND_PRINT((ndo, "ERROR: length < 1 bytes")); | ||||
TAG_OPT_OVERLOAD, len)); | |||||
break; | break; | ||||
} | } | ||||
tag = *bp++; | tag = *bp++; | ||||
--len; | --len; | ||||
ND_PRINT((ndo, "%s", tok2str(oo2str, NULL, tag))); | ND_PRINT((ndo, "%s", tok2str(oo2str, NULL, tag))); | ||||
break; | break; | ||||
case TAG_CLIENT_FQDN: | case TAG_CLIENT_FQDN: | ||||
/* this option should be at least 3 bytes long */ | /* this option should be at least 3 bytes long */ | ||||
if (len < 3) { | if (len < 3) { | ||||
ND_PRINT((ndo, "ERROR: option %u len %u < 3 bytes", | ND_PRINT((ndo, "ERROR: length < 3 bytes")); | ||||
TAG_CLIENT_FQDN, len)); | |||||
bp += len; | bp += len; | ||||
len = 0; | len = 0; | ||||
break; | break; | ||||
} | } | ||||
if (*bp) | if (*bp) | ||||
ND_PRINT((ndo, "[%s] ", client_fqdn_flags(*bp))); | ND_PRINT((ndo, "[%s] ", client_fqdn_flags(*bp))); | ||||
bp++; | bp++; | ||||
if (*bp || *(bp+1)) | if (*bp || *(bp+1)) | ||||
ND_PRINT((ndo, "%u/%u ", *bp, *(bp+1))); | ND_PRINT((ndo, "%u/%u ", *bp, *(bp+1))); | ||||
bp += 2; | bp += 2; | ||||
ND_PRINT((ndo, "\"")); | ND_PRINT((ndo, "\"")); | ||||
if (fn_printn(ndo, bp, len - 3, ndo->ndo_snapend)) { | if (fn_printn(ndo, bp, len - 3, ndo->ndo_snapend)) { | ||||
ND_PRINT((ndo, "\"")); | ND_PRINT((ndo, "\"")); | ||||
goto trunc; | goto trunc; | ||||
} | } | ||||
ND_PRINT((ndo, "\"")); | ND_PRINT((ndo, "\"")); | ||||
bp += len - 3; | bp += len - 3; | ||||
len = 0; | len = 0; | ||||
break; | break; | ||||
case TAG_CLIENT_ID: | case TAG_CLIENT_ID: | ||||
{ int type; | { | ||||
int type; | |||||
/* this option should be at least 1 byte long */ | /* this option should be at least 1 byte long */ | ||||
if (len < 1) { | if (len < 1) { | ||||
ND_PRINT((ndo, "ERROR: option %u len %u < 1 bytes", | ND_PRINT((ndo, "ERROR: length < 1 bytes")); | ||||
TAG_CLIENT_ID, len)); | |||||
break; | break; | ||||
} | } | ||||
type = *bp++; | type = *bp++; | ||||
len--; | len--; | ||||
if (type == 0) { | if (type == 0) { | ||||
ND_PRINT((ndo, "\"")); | ND_PRINT((ndo, "\"")); | ||||
if (fn_printn(ndo, bp, len, ndo->ndo_snapend)) { | if (fn_printn(ndo, bp, len, ndo->ndo_snapend)) { | ||||
ND_PRINT((ndo, "\"")); | ND_PRINT((ndo, "\"")); | ||||
Show All 19 Lines | case '$': | ||||
case TAG_AGENT_CIRCUIT: | case TAG_AGENT_CIRCUIT: | ||||
while (len >= 2) { | while (len >= 2) { | ||||
subopt = *bp++; | subopt = *bp++; | ||||
suboptlen = *bp++; | suboptlen = *bp++; | ||||
len -= 2; | len -= 2; | ||||
if (suboptlen > len) { | if (suboptlen > len) { | ||||
ND_PRINT((ndo, "\n\t %s SubOption %u, length %u: length goes past end of option", | ND_PRINT((ndo, "\n\t %s SubOption %u, length %u: length goes past end of option", | ||||
tok2str(agent_suboption_values, "Unknown", subopt), | tok2str(agent_suboption_values, "Unknown", subopt), | ||||
subopt, | subopt, | ||||
suboptlen)); | suboptlen)); | ||||
bp += len; | bp += len; | ||||
len = 0; | len = 0; | ||||
break; | break; | ||||
} | } | ||||
ND_PRINT((ndo, "\n\t %s SubOption %u, length %u: ", | ND_PRINT((ndo, "\n\t %s SubOption %u, length %u: ", | ||||
tok2str(agent_suboption_values, "Unknown", subopt), | tok2str(agent_suboption_values, "Unknown", subopt), | ||||
subopt, | subopt, | ||||
suboptlen)); | suboptlen)); | ||||
switch (subopt) { | switch (subopt) { | ||||
case AGENT_SUBOPTION_CIRCUIT_ID: /* fall through */ | case AGENT_SUBOPTION_CIRCUIT_ID: /* fall through */ | ||||
case AGENT_SUBOPTION_REMOTE_ID: | case AGENT_SUBOPTION_REMOTE_ID: | ||||
case AGENT_SUBOPTION_SUBSCRIBER_ID: | case AGENT_SUBOPTION_SUBSCRIBER_ID: | ||||
fn_printn(ndo, bp, suboptlen, NULL); | if (fn_printn(ndo, bp, suboptlen, ndo->ndo_snapend)) | ||||
goto trunc; | |||||
break; | break; | ||||
default: | default: | ||||
print_unknown_data(ndo, bp, "\n\t\t", suboptlen); | print_unknown_data(ndo, bp, "\n\t\t", suboptlen); | ||||
} | } | ||||
len -= suboptlen; | len -= suboptlen; | ||||
bp += suboptlen; | bp += suboptlen; | ||||
} | } | ||||
break; | break; | ||||
case TAG_CLASSLESS_STATIC_RT: | case TAG_CLASSLESS_STATIC_RT: | ||||
case TAG_CLASSLESS_STA_RT_MS: | case TAG_CLASSLESS_STA_RT_MS: | ||||
{ | { | ||||
u_int mask_width, significant_octets, i; | u_int mask_width, significant_octets, i; | ||||
/* this option should be at least 5 bytes long */ | /* this option should be at least 5 bytes long */ | ||||
if (len < 5) { | if (len < 5) { | ||||
ND_PRINT((ndo, "ERROR: option %u len %u < 5 bytes", | ND_PRINT((ndo, "ERROR: length < 5 bytes")); | ||||
TAG_CLASSLESS_STATIC_RT, len)); | |||||
bp += len; | bp += len; | ||||
len = 0; | len = 0; | ||||
break; | break; | ||||
} | } | ||||
while (len > 0) { | while (len > 0) { | ||||
if (!first) | if (!first) | ||||
ND_PRINT((ndo, ",")); | ND_PRINT((ndo, ",")); | ||||
mask_width = *bp++; | mask_width = *bp++; | ||||
len--; | len--; | ||||
/* mask_width <= 32 */ | /* mask_width <= 32 */ | ||||
if (mask_width > 32) { | if (mask_width > 32) { | ||||
ND_PRINT((ndo, "[ERROR: Mask width (%d) > 32]", mask_width)); | ND_PRINT((ndo, "[ERROR: Mask width (%d) > 32]", mask_width)); | ||||
bp += len; | bp += len; | ||||
len = 0; | len = 0; | ||||
break; | break; | ||||
} | } | ||||
significant_octets = (mask_width + 7) / 8; | significant_octets = (mask_width + 7) / 8; | ||||
/* significant octets + router(4) */ | /* significant octets + router(4) */ | ||||
if (len < significant_octets + 4) { | if (len < significant_octets + 4) { | ||||
ND_PRINT((ndo, "[ERROR: Remaining length (%u) < %u bytes]", len, significant_octets + 4)); | ND_PRINT((ndo, "[ERROR: Remaining length (%u) < %u bytes]", len, significant_octets + 4)); | ||||
bp += len; | bp += len; | ||||
len = 0; | len = 0; | ||||
break; | break; | ||||
} | } | ||||
ND_PRINT((ndo, "(")); | ND_PRINT((ndo, "(")); | ||||
if (mask_width == 0) | if (mask_width == 0) | ||||
ND_PRINT((ndo, "default")); | ND_PRINT((ndo, "default")); | ||||
else { | else { | ||||
for (i = 0; i < significant_octets ; i++) { | for (i = 0; i < significant_octets ; i++) { | ||||
if (i > 0) | if (i > 0) | ||||
ND_PRINT((ndo, ".")); | ND_PRINT((ndo, ".")); | ||||
ND_PRINT((ndo, "%d", *bp++)); | ND_PRINT((ndo, "%d", *bp++)); | ||||
} | } | ||||
for (i = significant_octets ; i < 4 ; i++) | for (i = significant_octets ; i < 4 ; i++) | ||||
ND_PRINT((ndo, ".0")); | ND_PRINT((ndo, ".0")); | ||||
ND_PRINT((ndo, "/%d", mask_width)); | ND_PRINT((ndo, "/%d", mask_width)); | ||||
} | } | ||||
memcpy((char *)&ul, (const char *)bp, sizeof(ul)); | memcpy((char *)&ul, (const char *)bp, sizeof(ul)); | ||||
ND_PRINT((ndo, ":%s)", ipaddr_string(ndo, &ul))); | ND_PRINT((ndo, ":%s)", ipaddr_string(ndo, &ul))); | ||||
bp += sizeof(ul); | bp += sizeof(ul); | ||||
len -= (significant_octets + 4); | len -= (significant_octets + 4); | ||||
first = 0; | first = 0; | ||||
} | } | ||||
break; | |||||
} | } | ||||
case TAG_USER_CLASS: | |||||
{ | |||||
u_int suboptnumber = 1; | |||||
first = 1; | |||||
if (len < 2) { | |||||
ND_PRINT((ndo, "ERROR: length < 2 bytes")); | |||||
bp += len; | |||||
len = 0; | |||||
break; | break; | ||||
} | |||||
while (len > 0) { | |||||
suboptlen = *bp++; | |||||
len--; | |||||
ND_PRINT((ndo, "\n\t ")); | |||||
ND_PRINT((ndo, "instance#%u: ", suboptnumber)); | |||||
if (suboptlen == 0) { | |||||
ND_PRINT((ndo, "ERROR: suboption length must be non-zero")); | |||||
bp += len; | |||||
len = 0; | |||||
break; | |||||
} | |||||
if (len < suboptlen) { | |||||
ND_PRINT((ndo, "ERROR: malformed option")); | |||||
bp += len; | |||||
len = 0; | |||||
break; | |||||
} | |||||
ND_PRINT((ndo, "\"")); | |||||
if (fn_printn(ndo, bp, suboptlen, ndo->ndo_snapend)) { | |||||
ND_PRINT((ndo, "\"")); | |||||
goto trunc; | |||||
} | |||||
ND_PRINT((ndo, "\"")); | |||||
ND_PRINT((ndo, ", length %d", suboptlen)); | |||||
suboptnumber++; | |||||
len -= suboptlen; | |||||
bp += suboptlen; | |||||
} | |||||
break; | |||||
} | |||||
default: | default: | ||||
ND_PRINT((ndo, "[unknown special tag %u, size %u]", | ND_PRINT((ndo, "[unknown special tag %u, size %u]", | ||||
tag, len)); | tag, len)); | ||||
bp += len; | bp += len; | ||||
len = 0; | len = 0; | ||||
break; | break; | ||||
} | } | ||||
break; | break; | ||||
} | } | ||||
/* Data left over? */ | /* Data left over? */ | ||||
if (len) { | if (len) { | ||||
ND_PRINT((ndo, "\n\t trailing data length %u", len)); | ND_PRINT((ndo, "\n\t trailing data length %u", len)); | ||||
bp += len; | bp += len; | ||||
} | } | ||||
} | } | ||||
return; | return; | ||||
trunc: | trunc: | ||||
ND_PRINT((ndo, "|[rfc1048]")); | ND_PRINT((ndo, "|[rfc1048]")); | ||||
} | } | ||||
static void | static void | ||||
cmu_print(netdissect_options *ndo, | cmu_print(netdissect_options *ndo, | ||||
register const u_char *bp) | register const u_char *bp) | ||||
{ | { | ||||
register const struct cmu_vend *cmu; | register const struct cmu_vend *cmu; | ||||
#define PRINTCMUADDR(m, s) { ND_TCHECK(cmu->m); \ | #define PRINTCMUADDR(m, s) { ND_TCHECK(cmu->m); \ | ||||
if (cmu->m.s_addr != 0) \ | if (cmu->m.s_addr != 0) \ | ||||
ND_PRINT((ndo, " %s:%s", s, ipaddr_string(ndo, &cmu->m.s_addr))); } | ND_PRINT((ndo, " %s:%s", s, ipaddr_string(ndo, &cmu->m.s_addr))); } | ||||
ND_PRINT((ndo, " vend-cmu")); | ND_PRINT((ndo, " vend-cmu")); | ||||
Show All 39 Lines |