* 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.
- *
- * Format and print bootp packets.
*/
+/* \summary: BOOTP and IPv4 DHCP printer */
+
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
-#include <tcpdump-stdinc.h>
+#include <netdissect-stdinc.h>
-#include <stdio.h>
#include <string.h>
-#include "interface.h"
+#include "netdissect.h"
#include "addrtoname.h"
#include "extract.h"
-#include "ether.h"
-#include "bootp.h"
static const char tstr[] = " [|bootp]";
-static void rfc1048_print(const u_char *);
-static void cmu_print(const u_char *);
+/*
+ * 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)
+/* RFC 4833, TZ codes */
+#define TAG_TZ_PCODE ((uint8_t) 100)
+#define TAG_TZ_TCODE ((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)
+#define TAG_MUDURL ((uint8_t) 161)
+
+/* 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 cmu_print(netdissect_options *, const u_char *);
static char *client_fqdn_flags(u_int flags);
static const struct tok bootp_flag_values[] = {
- { 0x8000, "Broadcast" },
- { 0, NULL}
+ { 0x8000, "Broadcast" },
+ { 0, NULL}
};
static const struct tok bootp_op_values[] = {
- { BOOTPREQUEST, "Request" },
- { BOOTPREPLY, "Reply" },
- { 0, NULL}
+ { BOOTPREQUEST, "Request" },
+ { BOOTPREPLY, "Reply" },
+ { 0, NULL}
};
/*
* Print bootp requests
*/
void
-bootp_print(register const u_char *cp, u_int length)
+bootp_print(netdissect_options *ndo,
+ register const u_char *cp, u_int length)
{
register const struct bootp *bp;
static const u_char vm_cmu[4] = VM_CMU;
static const u_char vm_rfc1048[4] = VM_RFC1048;
bp = (const struct bootp *)cp;
- TCHECK(bp->bp_op);
+ ND_TCHECK(bp->bp_op);
- printf("BOOTP/DHCP, %s",
- tok2str(bootp_op_values, "unknown (0x%02x)", bp->bp_op));
+ ND_PRINT((ndo, "BOOTP/DHCP, %s",
+ tok2str(bootp_op_values, "unknown (0x%02x)", bp->bp_op)));
+ ND_TCHECK(bp->bp_hlen);
if (bp->bp_htype == 1 && bp->bp_hlen == 6 && bp->bp_op == BOOTPREQUEST) {
- TCHECK2(bp->bp_chaddr[0], 6);
- printf(" from %s", etheraddr_string(bp->bp_chaddr));
+ ND_TCHECK2(bp->bp_chaddr[0], 6);
+ ND_PRINT((ndo, " from %s", etheraddr_string(ndo, bp->bp_chaddr)));
}
- printf(", length %u", length);
+ ND_PRINT((ndo, ", length %u", length));
- if (!vflag)
- return;
+ if (!ndo->ndo_vflag)
+ return;
- TCHECK(bp->bp_secs);
+ ND_TCHECK(bp->bp_secs);
/* The usual hardware address type is 1 (10Mb Ethernet) */
if (bp->bp_htype != 1)
- printf(", htype %d", bp->bp_htype);
+ ND_PRINT((ndo, ", htype %d", bp->bp_htype));
/* The usual length for 10Mb Ethernet address is 6 bytes */
if (bp->bp_htype != 1 || bp->bp_hlen != 6)
- printf(", hlen %d", bp->bp_hlen);
+ ND_PRINT((ndo, ", hlen %d", bp->bp_hlen));
/* Only print interesting fields */
if (bp->bp_hops)
- printf(", hops %d", bp->bp_hops);
- if (EXTRACT_32BITS(&bp->bp_xid))
- printf(", xid 0x%x", EXTRACT_32BITS(&bp->bp_xid));
- if (EXTRACT_16BITS(&bp->bp_secs))
- printf(", secs %d", EXTRACT_16BITS(&bp->bp_secs));
-
- printf(", Flags [%s]",
- bittok2str(bootp_flag_values, "none", EXTRACT_16BITS(&bp->bp_flags)));
- if (vflag > 1)
- printf(" (0x%04x)", EXTRACT_16BITS(&bp->bp_flags));
+ ND_PRINT((ndo, ", hops %d", bp->bp_hops));
+ if (EXTRACT_BE_U_4(&bp->bp_xid))
+ ND_PRINT((ndo, ", xid 0x%x", EXTRACT_BE_U_4(&bp->bp_xid)));
+ if (EXTRACT_BE_U_2(&bp->bp_secs))
+ ND_PRINT((ndo, ", secs %d", EXTRACT_BE_U_2(&bp->bp_secs)));
+
+ ND_TCHECK(bp->bp_flags);
+ ND_PRINT((ndo, ", Flags [%s]",
+ bittok2str(bootp_flag_values, "none", EXTRACT_BE_U_2(&bp->bp_flags))));
+ if (ndo->ndo_vflag > 1)
+ ND_PRINT((ndo, " (0x%04x)", EXTRACT_BE_U_2(&bp->bp_flags)));
/* Client's ip address */
- TCHECK(bp->bp_ciaddr);
- if (EXTRACT_32BITS(&bp->bp_ciaddr.s_addr))
- printf("\n\t Client-IP %s", ipaddr_string(&bp->bp_ciaddr));
+ ND_TCHECK(bp->bp_ciaddr);
+ if (EXTRACT_BE_U_4(&bp->bp_ciaddr.s_addr))
+ ND_PRINT((ndo, "\n\t Client-IP %s", ipaddr_string(ndo, &bp->bp_ciaddr)));
/* 'your' ip address (bootp client) */
- TCHECK(bp->bp_yiaddr);
- if (EXTRACT_32BITS(&bp->bp_yiaddr.s_addr))
- printf("\n\t Your-IP %s", ipaddr_string(&bp->bp_yiaddr));
+ ND_TCHECK(bp->bp_yiaddr);
+ if (EXTRACT_BE_U_4(&bp->bp_yiaddr.s_addr))
+ ND_PRINT((ndo, "\n\t Your-IP %s", ipaddr_string(ndo, &bp->bp_yiaddr)));
/* Server's ip address */
- TCHECK(bp->bp_siaddr);
- if (EXTRACT_32BITS(&bp->bp_siaddr.s_addr))
- printf("\n\t Server-IP %s", ipaddr_string(&bp->bp_siaddr));
+ ND_TCHECK(bp->bp_siaddr);
+ if (EXTRACT_BE_U_4(&bp->bp_siaddr.s_addr))
+ ND_PRINT((ndo, "\n\t Server-IP %s", ipaddr_string(ndo, &bp->bp_siaddr)));
/* Gateway's ip address */
- TCHECK(bp->bp_giaddr);
- if (EXTRACT_32BITS(&bp->bp_giaddr.s_addr))
- printf("\n\t Gateway-IP %s", ipaddr_string(&bp->bp_giaddr));
+ ND_TCHECK(bp->bp_giaddr);
+ if (EXTRACT_BE_U_4(&bp->bp_giaddr.s_addr))
+ ND_PRINT((ndo, "\n\t Gateway-IP %s", ipaddr_string(ndo, &bp->bp_giaddr)));
/* Client's Ethernet address */
if (bp->bp_htype == 1 && bp->bp_hlen == 6) {
- TCHECK2(bp->bp_chaddr[0], 6);
- printf("\n\t Client-Ethernet-Address %s", etheraddr_string(bp->bp_chaddr));
+ ND_TCHECK2(bp->bp_chaddr[0], 6);
+ ND_PRINT((ndo, "\n\t Client-Ethernet-Address %s", etheraddr_string(ndo, bp->bp_chaddr)));
}
- TCHECK2(bp->bp_sname[0], 1); /* check first char only */
- if (*bp->bp_sname) {
- printf("\n\t sname \"");
- if (fn_print(bp->bp_sname, snapend)) {
- putchar('"');
- fputs(tstr + 1, stdout);
+ ND_TCHECK_1(bp->bp_sname); /* check first char only */
+ if (EXTRACT_U_1(bp->bp_sname)) {
+ ND_PRINT((ndo, "\n\t sname \""));
+ if (fn_printztn(ndo, bp->bp_sname, (u_int)sizeof bp->bp_sname,
+ ndo->ndo_snapend)) {
+ ND_PRINT((ndo, "\""));
+ ND_PRINT((ndo, "%s", tstr + 1));
return;
}
- putchar('"');
+ ND_PRINT((ndo, "\""));
}
- TCHECK2(bp->bp_file[0], 1); /* check first char only */
- if (*bp->bp_file) {
- printf("\n\t file \"");
- if (fn_print(bp->bp_file, snapend)) {
- putchar('"');
- fputs(tstr + 1, stdout);
+ ND_TCHECK_1(bp->bp_file); /* check first char only */
+ if (EXTRACT_U_1(bp->bp_file)) {
+ ND_PRINT((ndo, "\n\t file \""));
+ if (fn_printztn(ndo, bp->bp_file, (u_int)sizeof bp->bp_file,
+ ndo->ndo_snapend)) {
+ ND_PRINT((ndo, "\""));
+ ND_PRINT((ndo, "%s", tstr + 1));
return;
}
- putchar('"');
+ ND_PRINT((ndo, "\""));
}
/* Decode the vendor buffer */
- TCHECK(bp->bp_vend[0]);
+ ND_TCHECK(bp->bp_vend[0]);
if (memcmp((const char *)bp->bp_vend, vm_rfc1048,
- sizeof(u_int32_t)) == 0)
- rfc1048_print(bp->bp_vend);
+ sizeof(uint32_t)) == 0)
+ rfc1048_print(ndo, bp->bp_vend);
else if (memcmp((const char *)bp->bp_vend, vm_cmu,
- sizeof(u_int32_t)) == 0)
- cmu_print(bp->bp_vend);
+ sizeof(uint32_t)) == 0)
+ cmu_print(ndo, bp->bp_vend);
else {
- u_int32_t ul;
+ uint32_t ul;
- ul = EXTRACT_32BITS(&bp->bp_vend);
+ ul = EXTRACT_BE_U_4(&bp->bp_vend);
if (ul != 0)
- printf("\n\t Vendor-#0x%x", ul);
+ ND_PRINT((ndo, "\n\t Vendor-#0x%x", ul));
}
return;
trunc:
- fputs(tstr, stdout);
+ ND_PRINT((ndo, "%s", tstr));
}
/*
* s - short (16 bits)
* b - period-seperated decimal bytes (variable length)
* x - colon-seperated hex bytes (variable length)
- * a - ascii string (variable length)
+ * a - ASCII string (variable length)
* B - on/off (8 bits)
* $ - special (explicit code to handle)
*/
{ TAG_LPR_SERVER, "iLPR-Server" }, /* lpr server (RFC1179) */
{ TAG_IMPRESS_SERVER, "iIM" }, /* impress servers (Imagen) */
{ TAG_RLP_SERVER, "iRL" }, /* resource location (RFC887) */
- { TAG_HOSTNAME, "aHostname" }, /* ascii hostname */
+ { TAG_HOSTNAME, "aHostname" }, /* ASCII hostname */
{ TAG_BOOTSIZE, "sBS" }, /* 512 byte blocks */
{ TAG_END, " END" },
/* RFC1497 tags */
{ TAG_SLP_SCOPE, "bSLP-SCOPE" }, /*"b" is a little wrong */
/* RFC 2937 */
{ TAG_NS_SEARCH, "sNSSEARCH" }, /* XXX 's' */
+/* RFC 3004 - The User Class Option for DHCP */
+ { TAG_USER_CLASS, "$User-Class" },
/* RFC 3011 */
{ TAG_IP4_SUBNET_SELECT, "iSUBNET" },
/* RFC 3442 */
{ TAG_CLASSLESS_STATIC_RT, "$Classless-Static-Route" },
{ TAG_CLASSLESS_STA_RT_MS, "$Classless-Static-Route-Microsoft" },
+/* RFC 5859 - TFTP Server Address Option for DHCPv4 */
+ { TAG_TFTP_SERVER_ADDRESS, "iTFTP-Server-Address" },
/* http://www.iana.org/assignments/bootp-dhcp-extensions/index.htm */
- { TAG_USER_CLASS, "aCLASS" },
{ TAG_SLP_NAMING_AUTH, "aSLP-NA" },
{ TAG_CLIENT_FQDN, "$FQDN" },
{ TAG_AGENT_CIRCUIT, "$Agent-Information" },
{ TAG_CLIENT_GUID, "bGUID" }, /* XXX 'b' */
{ TAG_LDAP_URL, "aLDAP" },
{ TAG_6OVER4, "i6o4" },
- { TAG_PRINTER_NAME, "aPRTR" },
- { TAG_MDHCP_SERVER, "bMDHCP" }, /* XXX 'b' */
+ { TAG_TZ_PCODE, "aPOSIX-TZ" },
+ { TAG_TZ_TCODE, "aTZ-Name" },
{ TAG_IPX_COMPAT, "bIPX" }, /* XXX 'b' */
{ TAG_NETINFO_PARENT, "iNI" },
{ TAG_NETINFO_PARENT_TAG, "aNITAG" },
{ TAG_URL, "aURL" },
{ TAG_FAILOVER, "bFAIL" }, /* XXX 'b' */
- { 0, NULL }
+ { TAG_MUDURL, "aMUD-URL" },
+ { 0, NULL }
};
/* 2-byte extended tags */
static const struct tok xtag2str[] = {
- { 0, NULL }
+ { 0, NULL }
};
/* DHCP "options overload" types */
static const struct tok oo2str[] = {
- { 1, "file" },
- { 2, "sname" },
- { 3, "file+sname" },
- { 0, NULL }
+ { 1, "file" },
+ { 2, "sname" },
+ { 3, "file+sname" },
+ { 0, NULL }
};
/* NETBIOS over TCP/IP node type options */
static const struct tok nbo2str[] = {
- { 0x1, "b-node" },
- { 0x2, "p-node" },
- { 0x4, "m-node" },
- { 0x8, "h-node" },
- { 0, NULL }
+ { 0x1, "b-node" },
+ { 0x2, "p-node" },
+ { 0x4, "m-node" },
+ { 0x8, "h-node" },
+ { 0, NULL }
};
/* ARP Hardware types, for Client-ID option */
static const struct tok arp2str[] = {
- { 0x1, "ether" },
- { 0x6, "ieee802" },
- { 0x7, "arcnet" },
- { 0xf, "frelay" },
- { 0x17, "strip" },
- { 0x18, "ieee1394" },
- { 0, NULL }
+ { 0x1, "ether" },
+ { 0x6, "ieee802" },
+ { 0x7, "arcnet" },
+ { 0xf, "frelay" },
+ { 0x17, "strip" },
+ { 0x18, "ieee1394" },
+ { 0, NULL }
};
static const struct tok dhcp_msg_values[] = {
- { DHCPDISCOVER, "Discover" },
- { DHCPOFFER, "Offer" },
- { DHCPREQUEST, "Request" },
- { DHCPDECLINE, "Decline" },
- { DHCPACK, "ACK" },
- { DHCPNAK, "NACK" },
- { DHCPRELEASE, "Release" },
- { DHCPINFORM, "Inform" },
- { 0, NULL }
+ { DHCPDISCOVER, "Discover" },
+ { DHCPOFFER, "Offer" },
+ { DHCPREQUEST, "Request" },
+ { DHCPDECLINE, "Decline" },
+ { DHCPACK, "ACK" },
+ { DHCPNAK, "NACK" },
+ { DHCPRELEASE, "Release" },
+ { DHCPINFORM, "Inform" },
+ { 0, NULL }
};
-#define AGENT_SUBOPTION_CIRCUIT_ID 1 /* RFC 3046 */
-#define AGENT_SUBOPTION_REMOTE_ID 2 /* RFC 3046 */
-#define AGENT_SUBOPTION_SUBSCRIBER_ID 6 /* RFC 3993 */
+#define AGENT_SUBOPTION_CIRCUIT_ID 1 /* RFC 3046 */
+#define AGENT_SUBOPTION_REMOTE_ID 2 /* RFC 3046 */
+#define AGENT_SUBOPTION_SUBSCRIBER_ID 6 /* RFC 3993 */
static const struct tok agent_suboption_values[] = {
- { AGENT_SUBOPTION_CIRCUIT_ID, "Circuit-ID" },
- { AGENT_SUBOPTION_REMOTE_ID, "Remote-ID" },
- { AGENT_SUBOPTION_SUBSCRIBER_ID, "Subscriber-ID" },
- { 0, NULL }
+ { AGENT_SUBOPTION_CIRCUIT_ID, "Circuit-ID" },
+ { AGENT_SUBOPTION_REMOTE_ID, "Remote-ID" },
+ { AGENT_SUBOPTION_SUBSCRIBER_ID, "Subscriber-ID" },
+ { 0, NULL }
};
static void
-rfc1048_print(register const u_char *bp)
+rfc1048_print(netdissect_options *ndo,
+ register const u_char *bp)
{
- register u_int16_t tag;
+ register uint16_t tag;
register u_int len;
register const char *cp;
register char c;
int first, idx;
- u_int32_t ul;
- u_int16_t us;
- u_int8_t uc, subopt, suboptlen;
+ uint32_t ul;
+ uint16_t us;
+ uint8_t uc, subopt, suboptlen;
- printf("\n\t Vendor-rfc1048 Extensions");
+ ND_PRINT((ndo, "\n\t Vendor-rfc1048 Extensions"));
/* Step over magic cookie */
- printf("\n\t Magic Cookie 0x%08x", EXTRACT_32BITS(bp));
+ ND_PRINT((ndo, "\n\t Magic Cookie 0x%08x", EXTRACT_BE_U_4(bp)));
bp += sizeof(int32_t);
/* Loop while we there is a tag left in the buffer */
- while (TTEST2(*bp, 1)) {
- tag = *bp++;
- if (tag == TAG_PAD && vflag < 3)
+ while (ND_TTEST_1(bp)) {
+ tag = EXTRACT_U_1(bp);
+ bp++;
+ if (tag == TAG_PAD && ndo->ndo_vflag < 3)
continue;
- if (tag == TAG_END && vflag < 3)
+ if (tag == TAG_END && ndo->ndo_vflag < 3)
return;
if (tag == TAG_EXTENDED_OPTION) {
- TCHECK2(*(bp + 1), 2);
- tag = EXTRACT_16BITS(bp + 1);
+ ND_TCHECK_2(bp + 1);
+ tag = EXTRACT_BE_U_2(bp + 1);
/* XXX we don't know yet if the IANA will
* preclude overlap of 1-byte and 2-byte spaces.
* If not, we need to offset tag after this step.
len = 0;
else {
/* Get the length; check for truncation */
- TCHECK2(*bp, 1);
- len = *bp++;
+ ND_TCHECK_1(bp);
+ len = EXTRACT_U_1(bp);
+ bp++;
}
- printf("\n\t %s Option %u, length %u%s", cp, tag, len,
- len > 0 ? ": " : "");
+ ND_PRINT((ndo, "\n\t %s Option %u, length %u%s", cp, tag, len,
+ len > 0 ? ": " : ""));
- if (tag == TAG_PAD && vflag > 2) {
+ if (tag == TAG_PAD && ndo->ndo_vflag > 2) {
u_int ntag = 1;
- while (TTEST2(*bp, 1) && *bp == TAG_PAD) {
+ while (ND_TTEST_1(bp) &&
+ EXTRACT_U_1(bp) == TAG_PAD) {
bp++;
ntag++;
}
if (ntag > 1)
- printf(", occurs %u", ntag);
+ ND_PRINT((ndo, ", occurs %u", ntag));
}
- if (!TTEST2(*bp, len)) {
- printf("[|rfc1048 %u]", len);
+ if (!ND_TTEST2(*bp, len)) {
+ ND_PRINT((ndo, "[|rfc1048 %u]", len));
return;
}
if (tag == TAG_DHCP_MESSAGE && len == 1) {
- uc = *bp++;
- printf("%s", tok2str(dhcp_msg_values, "Unknown (%u)", uc));
- continue;
+ uc = EXTRACT_U_1(bp);
+ bp++;
+ ND_PRINT((ndo, "%s", tok2str(dhcp_msg_values, "Unknown (%u)", uc)));
+ continue;
}
if (tag == TAG_PARM_REQUEST) {
idx = 0;
while (len-- > 0) {
- uc = *bp++;
+ uc = EXTRACT_U_1(bp);
+ bp++;
cp = tok2str(tag2str, "?Option %u", uc);
if (idx % 4 == 0)
- printf("\n\t ");
+ ND_PRINT((ndo, "\n\t "));
else
- printf(", ");
- printf("%s", cp + 1);
+ ND_PRINT((ndo, ", "));
+ ND_PRINT((ndo, "%s", cp + 1));
idx++;
}
continue;
first = 1;
while (len > 1) {
len -= 2;
- us = EXTRACT_16BITS(bp);
+ us = EXTRACT_BE_U_2(bp);
bp += 2;
cp = tok2str(xtag2str, "?xT%u", us);
if (!first)
- putchar('+');
- printf("%s", cp + 1);
+ ND_PRINT((ndo, "+"));
+ ND_PRINT((ndo, "%s", cp + 1));
first = 0;
}
continue;
switch (c) {
case 'a':
- /* ascii strings */
- putchar('"');
- if (fn_printn(bp, len, snapend)) {
- putchar('"');
+ /* ASCII strings */
+ ND_PRINT((ndo, "\""));
+ if (fn_printn(ndo, bp, len, ndo->ndo_snapend)) {
+ ND_PRINT((ndo, "\""));
goto trunc;
}
- putchar('"');
+ ND_PRINT((ndo, "\""));
bp += len;
len = 0;
break;
/* ip addresses/32-bit words */
while (len >= sizeof(ul)) {
if (!first)
- putchar(',');
- ul = EXTRACT_32BITS(bp);
+ ND_PRINT((ndo, ","));
+ ul = EXTRACT_BE_U_4(bp);
if (c == 'i') {
ul = htonl(ul);
- printf("%s", ipaddr_string(&ul));
+ ND_PRINT((ndo, "%s", ipaddr_string(ndo, &ul)));
} else if (c == 'L')
- printf("%d", ul);
+ ND_PRINT((ndo, "%d", ul));
else
- printf("%u", ul);
+ ND_PRINT((ndo, "%u", ul));
bp += sizeof(ul);
len -= sizeof(ul);
first = 0;
/* IP address pairs */
while (len >= 2*sizeof(ul)) {
if (!first)
- putchar(',');
+ ND_PRINT((ndo, ","));
memcpy((char *)&ul, (const char *)bp, sizeof(ul));
- printf("(%s:", ipaddr_string(&ul));
+ ND_PRINT((ndo, "(%s:", ipaddr_string(ndo, &ul)));
bp += sizeof(ul);
memcpy((char *)&ul, (const char *)bp, sizeof(ul));
- printf("%s)", ipaddr_string(&ul));
+ ND_PRINT((ndo, "%s)", ipaddr_string(ndo, &ul)));
bp += sizeof(ul);
len -= 2*sizeof(ul);
first = 0;
/* shorts */
while (len >= sizeof(us)) {
if (!first)
- putchar(',');
- us = EXTRACT_16BITS(bp);
- printf("%u", us);
+ ND_PRINT((ndo, ","));
+ us = EXTRACT_BE_U_2(bp);
+ ND_PRINT((ndo, "%u", us));
bp += sizeof(us);
len -= sizeof(us);
first = 0;
case 'B':
/* boolean */
while (len > 0) {
+ uint8_t bool_value;
if (!first)
- putchar(',');
- switch (*bp) {
+ ND_PRINT((ndo, ","));
+ bool_value = EXTRACT_U_1(bp);
+ switch (bool_value) {
case 0:
- putchar('N');
+ ND_PRINT((ndo, "N"));
break;
case 1:
- putchar('Y');
+ ND_PRINT((ndo, "Y"));
break;
default:
- printf("%u?", *bp);
+ ND_PRINT((ndo, "%u?", bool_value));
break;
}
++bp;
default:
/* Bytes */
while (len > 0) {
+ uint8_t byte_value;
if (!first)
- putchar(c == 'x' ? ':' : '.');
+ ND_PRINT((ndo, c == 'x' ? ":" : "."));
+ byte_value = EXTRACT_U_1(bp);
if (c == 'x')
- printf("%02x", *bp);
+ ND_PRINT((ndo, "%02x", byte_value));
else
- printf("%u", *bp);
+ ND_PRINT((ndo, "%u", byte_value));
++bp;
--len;
first = 0;
case TAG_NETBIOS_NODE:
/* this option should be at least 1 byte long */
- if (len < 1) {
- printf("ERROR: option %u len %u < 1 bytes",
- TAG_NETBIOS_NODE, len);
+ if (len < 1) {
+ ND_PRINT((ndo, "ERROR: length < 1 bytes"));
break;
}
- tag = *bp++;
+ tag = EXTRACT_U_1(bp);
+ ++bp;
--len;
- fputs(tok2str(nbo2str, NULL, tag), stdout);
+ ND_PRINT((ndo, "%s", tok2str(nbo2str, NULL, tag)));
break;
case TAG_OPT_OVERLOAD:
/* this option should be at least 1 byte long */
- if (len < 1) {
- printf("ERROR: option %u len %u < 1 bytes",
- TAG_OPT_OVERLOAD, len);
+ if (len < 1) {
+ ND_PRINT((ndo, "ERROR: length < 1 bytes"));
break;
}
- tag = *bp++;
+ tag = EXTRACT_U_1(bp);
+ ++bp;
--len;
- fputs(tok2str(oo2str, NULL, tag), stdout);
+ ND_PRINT((ndo, "%s", tok2str(oo2str, NULL, tag)));
break;
case TAG_CLIENT_FQDN:
/* this option should be at least 3 bytes long */
- if (len < 3) {
- printf("ERROR: option %u len %u < 3 bytes",
- TAG_CLIENT_FQDN, len);
+ if (len < 3) {
+ ND_PRINT((ndo, "ERROR: length < 3 bytes"));
bp += len;
len = 0;
break;
}
- if (*bp)
- printf("[%s] ", client_fqdn_flags(*bp));
+ if (EXTRACT_U_1(bp))
+ ND_PRINT((ndo, "[%s] ", client_fqdn_flags(EXTRACT_U_1(bp))));
bp++;
- if (*bp || *(bp+1))
- printf("%u/%u ", *bp, *(bp+1));
+ if (EXTRACT_U_1(bp) || EXTRACT_U_1(bp + 1))
+ ND_PRINT((ndo, "%u/%u ", EXTRACT_U_1(bp), EXTRACT_U_1(bp + 1)));
bp += 2;
- putchar('"');
- if (fn_printn(bp, len - 3, snapend)) {
- putchar('"');
+ ND_PRINT((ndo, "\""));
+ if (fn_printn(ndo, bp, len - 3, ndo->ndo_snapend)) {
+ ND_PRINT((ndo, "\""));
goto trunc;
}
- putchar('"');
+ ND_PRINT((ndo, "\""));
bp += len - 3;
len = 0;
break;
case TAG_CLIENT_ID:
- { int type;
+ {
+ int type;
/* this option should be at least 1 byte long */
- if (len < 1) {
- printf("ERROR: option %u len %u < 1 bytes",
- TAG_CLIENT_ID, len);
+ if (len < 1) {
+ ND_PRINT((ndo, "ERROR: length < 1 bytes"));
break;
}
- type = *bp++;
+ type = EXTRACT_U_1(bp);
+ bp++;
len--;
if (type == 0) {
- putchar('"');
- if (fn_printn(bp, len, snapend)) {
- putchar('"');
+ ND_PRINT((ndo, "\""));
+ if (fn_printn(ndo, bp, len, ndo->ndo_snapend)) {
+ ND_PRINT((ndo, "\""));
goto trunc;
}
- putchar('"');
+ ND_PRINT((ndo, "\""));
bp += len;
len = 0;
break;
} else {
- printf("%s ", tok2str(arp2str, "hardware-type %u,", type));
+ ND_PRINT((ndo, "%s ", tok2str(arp2str, "hardware-type %u,", type)));
while (len > 0) {
if (!first)
- putchar(':');
- printf("%02x", *bp);
+ ND_PRINT((ndo, ":"));
+ ND_PRINT((ndo, "%02x", EXTRACT_U_1(bp)));
++bp;
--len;
first = 0;
case TAG_AGENT_CIRCUIT:
while (len >= 2) {
- subopt = *bp++;
- suboptlen = *bp++;
+ subopt = EXTRACT_U_1(bp);
+ suboptlen = EXTRACT_U_1(bp + 1);
+ bp += 2;
len -= 2;
if (suboptlen > len) {
- printf("\n\t %s SubOption %u, length %u: length goes past end of option",
- tok2str(agent_suboption_values, "Unknown", subopt),
- subopt,
- suboptlen);
+ ND_PRINT((ndo, "\n\t %s SubOption %u, length %u: length goes past end of option",
+ tok2str(agent_suboption_values, "Unknown", subopt),
+ subopt,
+ suboptlen));
bp += len;
len = 0;
break;
}
- printf("\n\t %s SubOption %u, length %u: ",
- tok2str(agent_suboption_values, "Unknown", subopt),
- subopt,
- suboptlen);
+ ND_PRINT((ndo, "\n\t %s SubOption %u, length %u: ",
+ tok2str(agent_suboption_values, "Unknown", subopt),
+ subopt,
+ suboptlen));
switch (subopt) {
- case AGENT_SUBOPTION_CIRCUIT_ID: /* fall through */
- case AGENT_SUBOPTION_REMOTE_ID:
- case AGENT_SUBOPTION_SUBSCRIBER_ID:
- fn_printn(bp, suboptlen, NULL);
- break;
+ case AGENT_SUBOPTION_CIRCUIT_ID: /* fall through */
+ case AGENT_SUBOPTION_REMOTE_ID:
+ case AGENT_SUBOPTION_SUBSCRIBER_ID:
+ if (fn_printn(ndo, bp, suboptlen, ndo->ndo_snapend))
+ goto trunc;
+ break;
default:
- print_unknown_data(gndo,bp, "\n\t\t", suboptlen);
+ print_unknown_data(ndo, bp, "\n\t\t", suboptlen);
}
len -= suboptlen;
bp += suboptlen;
- }
- break;
+ }
+ break;
case TAG_CLASSLESS_STATIC_RT:
case TAG_CLASSLESS_STA_RT_MS:
- {
+ {
u_int mask_width, significant_octets, i;
/* this option should be at least 5 bytes long */
- if (len < 5) {
- printf("ERROR: option %u len %u < 5 bytes",
- TAG_CLASSLESS_STATIC_RT, len);
+ if (len < 5) {
+ ND_PRINT((ndo, "ERROR: length < 5 bytes"));
bp += len;
len = 0;
break;
}
while (len > 0) {
if (!first)
- putchar(',');
- mask_width = *bp++;
+ ND_PRINT((ndo, ","));
+ mask_width = EXTRACT_U_1(bp);
+ bp++;
len--;
/* mask_width <= 32 */
if (mask_width > 32) {
- printf("[ERROR: Mask width (%d) > 32]", mask_width);
+ ND_PRINT((ndo, "[ERROR: Mask width (%d) > 32]", mask_width));
bp += len;
len = 0;
break;
significant_octets = (mask_width + 7) / 8;
/* significant octets + router(4) */
if (len < significant_octets + 4) {
- printf("[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;
len = 0;
break;
}
- putchar('(');
+ ND_PRINT((ndo, "("));
if (mask_width == 0)
- printf("default");
+ ND_PRINT((ndo, "default"));
else {
for (i = 0; i < significant_octets ; i++) {
if (i > 0)
- putchar('.');
- printf("%d", *bp++);
+ ND_PRINT((ndo, "."));
+ ND_PRINT((ndo, "%d", EXTRACT_U_1(bp)));
+ bp++;
}
for (i = significant_octets ; i < 4 ; i++)
- printf(".0");
- printf("/%d", mask_width);
+ ND_PRINT((ndo, ".0"));
+ ND_PRINT((ndo, "/%d", mask_width));
}
memcpy((char *)&ul, (const char *)bp, sizeof(ul));
- printf(":%s)", ipaddr_string(&ul));
+ ND_PRINT((ndo, ":%s)", ipaddr_string(ndo, &ul)));
bp += sizeof(ul);
len -= (significant_octets + 4);
first = 0;
}
- }
- break;
+ 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;
+ }
+ while (len > 0) {
+ suboptlen = EXTRACT_U_1(bp);
+ 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: invalid 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:
- printf("[unknown special tag %u, size %u]",
- tag, len);
+ ND_PRINT((ndo, "[unknown special tag %u, size %u]",
+ tag, len));
bp += len;
len = 0;
break;
}
/* Data left over? */
if (len) {
- printf("\n\t trailing data length %u", len);
+ ND_PRINT((ndo, "\n\t trailing data length %u", len));
bp += len;
}
}
return;
trunc:
- printf("|[rfc1048]");
+ ND_PRINT((ndo, "|[rfc1048]"));
}
static void
-cmu_print(register const u_char *bp)
+cmu_print(netdissect_options *ndo,
+ register const u_char *bp)
{
register const struct cmu_vend *cmu;
-#define PRINTCMUADDR(m, s) { TCHECK(cmu->m); \
+#define PRINTCMUADDR(m, s) { ND_TCHECK(cmu->m); \
if (cmu->m.s_addr != 0) \
- printf(" %s:%s", s, ipaddr_string(&cmu->m.s_addr)); }
+ ND_PRINT((ndo, " %s:%s", s, ipaddr_string(ndo, &cmu->m.s_addr))); }
- printf(" vend-cmu");
+ ND_PRINT((ndo, " vend-cmu"));
cmu = (const struct cmu_vend *)bp;
/* Only print if there are unknown bits */
- TCHECK(cmu->v_flags);
+ ND_TCHECK(cmu->v_flags);
if ((cmu->v_flags & ~(VF_SMASK)) != 0)
- printf(" F:0x%x", cmu->v_flags);
+ ND_PRINT((ndo, " F:0x%x", cmu->v_flags));
PRINTCMUADDR(v_dgate, "DG");
PRINTCMUADDR(v_smask, cmu->v_flags & VF_SMASK ? "SM" : "SM*");
PRINTCMUADDR(v_dns1, "NS1");
return;
trunc:
- fputs(tstr, stdout);
+ ND_PRINT((ndo, "%s", tstr));
#undef PRINTCMUADDR
}
projects / tcpdump / blobdiff