* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
-#ifndef lint
-static const char rcsid[] =
- "@(#) $Header: /tcpdump/master/tcpdump/print-decnet.c,v 1.28 2000-01-17 06:24:24 itojun Exp $ (LBL)";
-#endif
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <sys/param.h>
-#include <sys/time.h>
-#include <sys/socket.h>
-
-#if __STDC__
-struct mbuf;
-struct rtentry;
-#endif
-#include <net/if.h>
-
-#ifdef HAVE_LIBDNET
-#include <netdnet/dnetdb.h>
-#endif
-
-#include <ctype.h>
-#ifdef HAVE_MALLOC_H
-#include <malloc.h>
-#endif
+/* \summary: DECnet printer */
+/*
+ * specification: Section 10.0 MESSAGES
+ * DECnet Digital Network Architecture
+ * Phase IV
+ * Routing Layer Functional Specification
+ * Order No. AA-X435A-TK
+ * Version 2.0.0 December 1983
+ */
+
+#include <config.h>
+
+#include "netdissect-stdinc.h"
+
#include <stdio.h>
#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include "decnet.h"
+#define ND_LONGJMP_FROM_TCHECK
+#include "netdissect.h"
#include "extract.h"
-#include "interface.h"
#include "addrtoname.h"
+
+#ifndef _WIN32
+typedef nd_uint8_t byte; /* single byte field */
+#else
+/*
+ * the keyword 'byte' generates conflicts in Windows
+ */
+typedef nd_uint8_t Byte; /* single byte field */
+#define byte Byte
+#endif /* _WIN32 */
+typedef nd_uint16_t word; /* 2 byte field */
+typedef nd_uint32_t longword; /* 4 bytes field */
+
+/*
+ * Definitions for DECNET Phase IV protocol headers
+ */
+typedef union {
+ nd_mac48 dne_addr; /* full Ethernet address */
+ struct {
+ nd_byte dne_hiord[4]; /* DECnet HIORD prefix */
+ nd_byte dne_nodeaddr[2]; /* DECnet node address */
+ } dne_remote;
+} etheraddr; /* Ethernet address */
+
+#define HIORD 0x000400aa /* high 32-bits of address (swapped) */
+
+#define AREAMASK 0176000 /* mask for area field */
+#define AREASHIFT 10 /* bit-offset for area field */
+#define NODEMASK 01777 /* mask for node address field */
+
+/*
+ * Define long and short header formats.
+ */
+struct shorthdr
+ {
+ byte sh_flags; /* route flags */
+ word sh_dst; /* destination node address */
+ word sh_src; /* source node address */
+ byte sh_visits; /* visit count */
+ };
+
+struct longhdr
+ {
+ byte lg_flags; /* route flags */
+ byte lg_darea; /* destination area (reserved) */
+ byte lg_dsarea; /* destination subarea (reserved) */
+ etheraddr lg_dst; /* destination id */
+ byte lg_sarea; /* source area (reserved) */
+ byte lg_ssarea; /* source subarea (reserved) */
+ etheraddr lg_src; /* source id */
+ byte lg_nextl2; /* next level 2 router (reserved) */
+ byte lg_visits; /* visit count */
+ byte lg_service; /* service class (reserved) */
+ byte lg_pt; /* protocol type (reserved) */
+ };
+
+union routehdr
+ {
+ struct shorthdr rh_short; /* short route header */
+ struct longhdr rh_long; /* long route header */
+ };
+
+/*
+ * Define the values of various fields in the protocol messages.
+ *
+ * 1. Data packet formats.
+ */
+#define RMF_MASK 7 /* mask for message type */
+#define RMF_SHORT 2 /* short message format */
+#define RMF_LONG 6 /* long message format */
+#ifndef RMF_RQR
+#define RMF_RQR 010 /* request return to sender */
+#define RMF_RTS 020 /* returning to sender */
+#define RMF_IE 040 /* intra-ethernet packet */
+#endif /* RMR_RQR */
+#define RMF_FVER 0100 /* future version flag */
+#define RMF_PAD 0200 /* pad field */
+#define RMF_PADMASK 0177 /* pad field mask */
+
+#define VIS_MASK 077 /* visit field mask */
+
+/*
+ * 2. Control packet formats.
+ */
+#define RMF_CTLMASK 017 /* mask for message type */
+#define RMF_CTLMSG 01 /* control message indicator */
+#define RMF_INIT 01 /* initialization message */
+#define RMF_VER 03 /* verification message */
+#define RMF_TEST 05 /* hello and test message */
+#define RMF_L1ROUT 07 /* level 1 routing message */
+#define RMF_L2ROUT 011 /* level 2 routing message */
+#define RMF_RHELLO 013 /* router hello message */
+#define RMF_EHELLO 015 /* endnode hello message */
+
+#define TI_L2ROUT 01 /* level 2 router */
+#define TI_L1ROUT 02 /* level 1 router */
+#define TI_ENDNODE 03 /* endnode */
+#define TI_VERIF 04 /* verification required */
+#define TI_BLOCK 010 /* blocking requested */
+
+#define VE_VERS 2 /* version number (2) */
+#define VE_ECO 0 /* ECO number */
+#define VE_UECO 0 /* user ECO number (0) */
+
+#define P3_VERS 1 /* phase III version number (1) */
+#define P3_ECO 3 /* ECO number (3) */
+#define P3_UECO 0 /* user ECO number (0) */
+
+#define II_L2ROUT 01 /* level 2 router */
+#define II_L1ROUT 02 /* level 1 router */
+#define II_ENDNODE 03 /* endnode */
+#define II_VERIF 04 /* verification required */
+#define II_NOMCAST 040 /* no multicast traffic accepted */
+#define II_BLOCK 0100 /* blocking requested */
+#define II_TYPEMASK 03 /* mask for node type */
+
+#define TESTDATA 0252 /* test data bytes */
+#define TESTLEN 1 /* length of transmitted test data */
+
+/*
+ * Define control message formats.
+ */
+struct initmsg /* initialization message */
+ {
+ byte in_flags; /* route flags */
+ word in_src; /* source node address */
+ byte in_info; /* routing layer information */
+ word in_blksize; /* maximum data link block size */
+ byte in_vers; /* version number */
+ byte in_eco; /* ECO number */
+ byte in_ueco; /* user ECO number */
+ word in_hello; /* hello timer */
+ byte in_rsvd; /* reserved image field */
+ };
+
+struct verifmsg /* verification message */
+ {
+ byte ve_flags; /* route flags */
+ word ve_src; /* source node address */
+ byte ve_fcnval; /* function value image field */
+ };
+
+struct testmsg /* hello and test message */
+ {
+ byte te_flags; /* route flags */
+ word te_src; /* source node address */
+ byte te_data; /* test data image field */
+ };
+
+struct l1rout /* level 1 routing message */
+ {
+ byte r1_flags; /* route flags */
+ word r1_src; /* source node address */
+ byte r1_rsvd; /* reserved field */
+ };
+
+struct l2rout /* level 2 routing message */
+ {
+ byte r2_flags; /* route flags */
+ word r2_src; /* source node address */
+ byte r2_rsvd; /* reserved field */
+ };
+
+struct rhellomsg /* router hello message */
+ {
+ byte rh_flags; /* route flags */
+ byte rh_vers; /* version number */
+ byte rh_eco; /* ECO number */
+ byte rh_ueco; /* user ECO number */
+ etheraddr rh_src; /* source id */
+ byte rh_info; /* routing layer information */
+ word rh_blksize; /* maximum data link block size */
+ byte rh_priority; /* router's priority */
+ byte rh_area; /* reserved */
+ word rh_hello; /* hello timer */
+ byte rh_mpd; /* reserved */
+ };
+
+struct ehellomsg /* endnode hello message */
+ {
+ byte eh_flags; /* route flags */
+ byte eh_vers; /* version number */
+ byte eh_eco; /* ECO number */
+ byte eh_ueco; /* user ECO number */
+ etheraddr eh_src; /* source id */
+ byte eh_info; /* routing layer information */
+ word eh_blksize; /* maximum data link block size */
+ byte eh_area; /* area (reserved) */
+ byte eh_seed[8]; /* verification seed */
+ etheraddr eh_router; /* designated router */
+ word eh_hello; /* hello timer */
+ byte eh_mpd; /* (reserved) */
+ byte eh_data; /* test data image field */
+ };
+
+union controlmsg
+ {
+ struct initmsg cm_init; /* initialization message */
+ struct verifmsg cm_ver; /* verification message */
+ struct testmsg cm_test; /* hello and test message */
+ struct l1rout cm_l1rou; /* level 1 routing message */
+ struct l2rout cm_l2rout; /* level 2 routing message */
+ struct rhellomsg cm_rhello; /* router hello message */
+ struct ehellomsg cm_ehello; /* endnode hello message */
+ };
+
+/* Macros for decoding routing-info fields */
+#define RI_COST(x) ((x)&0777)
+#define RI_HOPS(x) (((x)>>10)&037)
+
+/*
+ * NSP protocol fields and values.
+ */
+
+#define NSP_TYPEMASK 014 /* mask to isolate type code */
+#define NSP_SUBMASK 0160 /* mask to isolate subtype code */
+#define NSP_SUBSHFT 4 /* shift to move subtype code */
+
+#define MFT_DATA 0 /* data message */
+#define MFT_ACK 04 /* acknowledgement message */
+#define MFT_CTL 010 /* control message */
+
+#define MFS_ILS 020 /* data or I/LS indicator */
+#define MFS_BOM 040 /* beginning of message (data) */
+#define MFS_MOM 0 /* middle of message (data) */
+#define MFS_EOM 0100 /* end of message (data) */
+#define MFS_INT 040 /* interrupt message */
+
+#define MFS_DACK 0 /* data acknowledgement */
+#define MFS_IACK 020 /* I/LS acknowledgement */
+#define MFS_CACK 040 /* connect acknowledgement */
+
+#define MFS_NOP 0 /* no operation */
+#define MFS_CI 020 /* connect initiate */
+#define MFS_CC 040 /* connect confirm */
+#define MFS_DI 060 /* disconnect initiate */
+#define MFS_DC 0100 /* disconnect confirm */
+#define MFS_RCI 0140 /* retransmitted connect initiate */
+
+#define SGQ_ACK 0100000 /* ack */
+#define SGQ_NAK 0110000 /* negative ack */
+#define SGQ_OACK 0120000 /* other channel ack */
+#define SGQ_ONAK 0130000 /* other channel negative ack */
+#define SGQ_MASK 07777 /* mask to isolate seq # */
+#define SGQ_OTHER 020000 /* other channel qualifier */
+#define SGQ_DELAY 010000 /* ack delay flag */
+
+#define SGQ_EOM 0100000 /* pseudo flag for end-of-message */
+
+#define LSM_MASK 03 /* mask for modifier field */
+#define LSM_NOCHANGE 0 /* no change */
+#define LSM_DONOTSEND 1 /* do not send data */
+#define LSM_SEND 2 /* send data */
+
+#define LSI_MASK 014 /* mask for interpretation field */
+#define LSI_DATA 0 /* data segment or message count */
+#define LSI_INTR 4 /* interrupt request count */
+#define LSI_INTM 0377 /* funny marker for int. message */
+
+#define COS_MASK 014 /* mask for flow control field */
+#define COS_NONE 0 /* no flow control */
+#define COS_SEGMENT 04 /* segment flow control */
+#define COS_MESSAGE 010 /* message flow control */
+#define COS_DEFAULT 1 /* default value for field */
+
+#define COI_MASK 3 /* mask for version field */
+#define COI_32 0 /* version 3.2 */
+#define COI_31 1 /* version 3.1 */
+#define COI_40 2 /* version 4.0 */
+#define COI_41 3 /* version 4.1 */
+
+#define MNU_MASK 140 /* mask for session control version */
+#define MNU_10 000 /* session V1.0 */
+#define MNU_20 040 /* session V2.0 */
+#define MNU_ACCESS 1 /* access control present */
+#define MNU_USRDATA 2 /* user data field present */
+#define MNU_INVKPROXY 4 /* invoke proxy field present */
+#define MNU_UICPROXY 8 /* use uic-based proxy */
+
+#define DC_NORESOURCES 1 /* no resource reason code */
+#define DC_NOLINK 41 /* no link terminate reason code */
+#define DC_COMPLETE 42 /* disconnect complete reason code */
+
+#define DI_NOERROR 0 /* user disconnect */
+#define DI_SHUT 3 /* node is shutting down */
+#define DI_NOUSER 4 /* destination end user does not exist */
+#define DI_INVDEST 5 /* invalid end user destination */
+#define DI_REMRESRC 6 /* insufficient remote resources */
+#define DI_TPA 8 /* third party abort */
+#define DI_PROTOCOL 7 /* protocol error discovered */
+#define DI_ABORT 9 /* user abort */
+#define DI_LOCALRESRC 32 /* insufficient local resources */
+#define DI_REMUSERRESRC 33 /* insufficient remote user resources */
+#define DI_BADACCESS 34 /* bad access control information */
+#define DI_BADACCNT 36 /* bad ACCOUNT information */
+#define DI_CONNECTABORT 38 /* connect request cancelled */
+#define DI_TIMEDOUT 38 /* remote node or user crashed */
+#define DI_UNREACHABLE 39 /* local timers expired due to ... */
+#define DI_BADIMAGE 43 /* bad image data in connect */
+#define DI_SERVMISMATCH 54 /* cryptographic service mismatch */
+
+#define UC_OBJREJECT 0 /* object rejected connect */
+#define UC_USERDISCONNECT 0 /* user disconnect */
+#define UC_RESOURCES 1 /* insufficient resources (local or remote) */
+#define UC_NOSUCHNODE 2 /* unrecognized node name */
+#define UC_REMOTESHUT 3 /* remote node shutting down */
+#define UC_NOSUCHOBJ 4 /* unrecognized object */
+#define UC_INVOBJFORMAT 5 /* invalid object name format */
+#define UC_OBJTOOBUSY 6 /* object too busy */
+#define UC_NETWORKABORT 8 /* network abort */
+#define UC_USERABORT 9 /* user abort */
+#define UC_INVNODEFORMAT 10 /* invalid node name format */
+#define UC_LOCALSHUT 11 /* local node shutting down */
+#define UC_ACCESSREJECT 34 /* invalid access control information */
+#define UC_NORESPONSE 38 /* no response from object */
+#define UC_UNREACHABLE 39 /* node unreachable */
+
+/*
+ * NSP message formats.
+ */
+struct nsphdr /* general nsp header */
+ {
+ byte nh_flags; /* message flags */
+ word nh_dst; /* destination link address */
+ word nh_src; /* source link address */
+ };
+
+struct seghdr /* data segment header */
+ {
+ byte sh_flags; /* message flags */
+ word sh_dst; /* destination link address */
+ word sh_src; /* source link address */
+ word sh_seq[3]; /* sequence numbers */
+ };
+
+struct minseghdr /* minimum data segment header */
+ {
+ byte ms_flags; /* message flags */
+ word ms_dst; /* destination link address */
+ word ms_src; /* source link address */
+ word ms_seq; /* sequence number */
+ };
+
+struct lsmsg /* link service message (after hdr) */
+ {
+ byte ls_lsflags; /* link service flags */
+ byte ls_fcval; /* flow control value */
+ };
+
+struct ackmsg /* acknowledgement message */
+ {
+ byte ak_flags; /* message flags */
+ word ak_dst; /* destination link address */
+ word ak_src; /* source link address */
+ word ak_acknum[2]; /* acknowledgement numbers */
+ };
+
+struct minackmsg /* minimum acknowledgement message */
+ {
+ byte mk_flags; /* message flags */
+ word mk_dst; /* destination link address */
+ word mk_src; /* source link address */
+ word mk_acknum; /* acknowledgement number */
+ };
+
+struct ciackmsg /* connect acknowledgement message */
+ {
+ byte ck_flags; /* message flags */
+ word ck_dst; /* destination link address */
+ };
+
+struct cimsg /* connect initiate message */
+ {
+ byte ci_flags; /* message flags */
+ word ci_dst; /* destination link address (0) */
+ word ci_src; /* source link address */
+ byte ci_services; /* requested services */
+ byte ci_info; /* information */
+ word ci_segsize; /* maximum segment size */
+ };
+
+struct ccmsg /* connect confirm message */
+ {
+ byte cc_flags; /* message flags */
+ word cc_dst; /* destination link address */
+ word cc_src; /* source link address */
+ byte cc_services; /* requested services */
+ byte cc_info; /* information */
+ word cc_segsize; /* maximum segment size */
+ byte cc_optlen; /* optional data length */
+ };
+
+struct cnmsg /* generic connect message */
+ {
+ byte cn_flags; /* message flags */
+ word cn_dst; /* destination link address */
+ word cn_src; /* source link address */
+ byte cn_services; /* requested services */
+ byte cn_info; /* information */
+ word cn_segsize; /* maximum segment size */
+ };
+
+struct dimsg /* disconnect initiate message */
+ {
+ byte di_flags; /* message flags */
+ word di_dst; /* destination link address */
+ word di_src; /* source link address */
+ word di_reason; /* reason code */
+ byte di_optlen; /* optional data length */
+ };
+
+struct dcmsg /* disconnect confirm message */
+ {
+ byte dc_flags; /* message flags */
+ word dc_dst; /* destination link address */
+ word dc_src; /* source link address */
+ word dc_reason; /* reason code */
+ };
+
/* Forwards */
-static void print_decnet_ctlmsg(const union routehdr *, u_int);
-static void print_t_info(int);
-static void print_l1_routes(const char *, u_int);
-static void print_l2_routes(const char *, u_int);
-static void print_i_info(int);
-static void print_elist(const char *, u_int);
-static void print_nsp(const u_char *, u_int);
-static void print_reason(int);
-#ifdef PRINT_NSPDATA
-static void pdata(u_char *, int);
-#endif
-
-#ifdef HAVE_LIBDNET
-extern char *dnet_htoa(struct dn_naddr *);
-#endif
+static int print_decnet_ctlmsg(netdissect_options *, const union routehdr *, u_int, u_int);
+static void print_t_info(netdissect_options *, u_int);
+static void print_l1_routes(netdissect_options *, const u_char *, u_int);
+static void print_l2_routes(netdissect_options *, const u_char *, u_int);
+static void print_i_info(netdissect_options *, u_int);
+static void print_elist(const u_char *, u_int);
+static int print_nsp(netdissect_options *, const u_char *, u_int);
+static void print_reason(netdissect_options *, u_int);
void
-decnet_print(register const u_char *ap, register u_int length,
- register u_int caplen)
+decnet_print(netdissect_options *ndo,
+ const u_char *ap, u_int length,
+ u_int caplen)
{
- static union routehdr rhcopy;
- register union routehdr *rhp = &rhcopy;
- register int mflags;
- int dst, src, hops;
- u_int rhlen, nsplen, pktlen;
+ const union routehdr *rhp;
+ u_int mflags;
+ uint16_t dst, src;
+ u_int hops;
+ u_int nsplen, pktlen;
const u_char *nspp;
+ ndo->ndo_protocol = "decnet";
if (length < sizeof(struct shorthdr)) {
- (void)printf("[|decnet]");
- return;
+ ND_PRINT(" (length %u < %zu)", length, sizeof(struct shorthdr));
+ goto invalid;
}
- pktlen = EXTRACT_LE_16BITS(ap);
-
- rhlen = min(length, caplen);
- rhlen = min(rhlen, sizeof(*rhp));
- memcpy((char *)rhp, (char *)&(ap[sizeof(short)]), rhlen);
+ /*
+ * This length does not seem to be in any specification, but it is present
+ * in the test case packet capture, which is consistent with the Wireshark
+ * protocol decoder.
+ */
+ pktlen = GET_LE_U_2(ap);
+ if (pktlen < sizeof(struct shorthdr)) {
+ ND_PRINT(" (pktlen %u < %zu)", pktlen, sizeof(struct shorthdr));
+ goto invalid;
+ }
+ if (pktlen > length) {
+ ND_PRINT(" (pktlen %u > %u)", pktlen, length);
+ goto invalid;
+ }
+ length = pktlen;
- mflags = EXTRACT_LE_8BITS(rhp->rh_short.sh_flags);
+ rhp = (const union routehdr *)(ap + sizeof(short));
+ mflags = GET_U_1(rhp->rh_short.sh_flags);
if (mflags & RMF_PAD) {
/* pad bytes of some sort in front of message */
u_int padlen = mflags & RMF_PADMASK;
- if (vflag)
- (void) printf("[pad:%d] ", padlen);
+ if (ndo->ndo_vflag)
+ ND_PRINT("[pad:%u] ", padlen);
+ if (length < padlen + 2) {
+ ND_PRINT(" (length %u < %u)", length, padlen + 2);
+ goto invalid;
+ }
+ ND_TCHECK_LEN(ap + sizeof(short), padlen);
ap += padlen;
length -= padlen;
caplen -= padlen;
- rhlen = min(length, caplen);
- rhlen = min(rhlen, sizeof(*rhp));
- memcpy((char *)rhp, (char *)&(ap[sizeof(short)]), rhlen);
- mflags = EXTRACT_LE_8BITS(rhp->rh_short.sh_flags);
+ rhp = (const union routehdr *)(ap + sizeof(short));
+ mflags = GET_U_1(rhp->rh_short.sh_flags);
}
if (mflags & RMF_FVER) {
- (void) printf("future-version-decnet");
- default_print(ap, length);
+ ND_PRINT("future-version-decnet");
+ ND_DEFAULTPRINT(ap, ND_MIN(length, caplen));
return;
}
/* is it a control message? */
if (mflags & RMF_CTLMSG) {
- print_decnet_ctlmsg(rhp, min(length, caplen));
+ if (!print_decnet_ctlmsg(ndo, rhp, length, caplen))
+ goto invalid;
return;
}
switch (mflags & RMF_MASK) {
case RMF_LONG:
+ if (length < sizeof(struct longhdr)) {
+ ND_PRINT(" (length %u < %zu)", length, sizeof(struct longhdr));
+ goto invalid;
+ }
+ ND_TCHECK_SIZE(&rhp->rh_long);
dst =
- EXTRACT_LE_16BITS(rhp->rh_long.lg_dst.dne_remote.dne_nodeaddr);
+ GET_LE_U_2(rhp->rh_long.lg_dst.dne_remote.dne_nodeaddr);
src =
- EXTRACT_LE_16BITS(rhp->rh_long.lg_src.dne_remote.dne_nodeaddr);
- hops = EXTRACT_LE_8BITS(rhp->rh_long.lg_visits);
- nspp = &(ap[sizeof(short) + sizeof(struct longhdr)]);
- nsplen = min((length - sizeof(struct longhdr)),
- (caplen - sizeof(struct longhdr)));
+ GET_LE_U_2(rhp->rh_long.lg_src.dne_remote.dne_nodeaddr);
+ hops = GET_U_1(rhp->rh_long.lg_visits);
+ nspp = ap + sizeof(short) + sizeof(struct longhdr);
+ nsplen = length - sizeof(struct longhdr);
break;
case RMF_SHORT:
- dst = EXTRACT_LE_16BITS(rhp->rh_short.sh_dst);
- src = EXTRACT_LE_16BITS(rhp->rh_short.sh_src);
- hops = (EXTRACT_LE_8BITS(rhp->rh_short.sh_visits) & VIS_MASK)+1;
- nspp = &(ap[sizeof(short) + sizeof(struct shorthdr)]);
- nsplen = min((length - sizeof(struct shorthdr)),
- (caplen - sizeof(struct shorthdr)));
+ dst = GET_LE_U_2(rhp->rh_short.sh_dst);
+ src = GET_LE_U_2(rhp->rh_short.sh_src);
+ hops = (GET_U_1(rhp->rh_short.sh_visits) & VIS_MASK)+1;
+ nspp = ap + sizeof(short) + sizeof(struct shorthdr);
+ nsplen = length - sizeof(struct shorthdr);
break;
default:
- (void) printf("unknown message flags under mask");
- default_print((u_char *)ap, length);
+ ND_PRINT("unknown message flags under mask");
+ ND_DEFAULTPRINT((const u_char *)ap, ND_MIN(length, caplen));
return;
}
- (void)printf("%s > %s %d ",
- dnaddr_string(src), dnaddr_string(dst), pktlen);
- if (vflag) {
+ ND_PRINT("%s > %s %u ",
+ dnaddr_string(ndo, src), dnaddr_string(ndo, dst), pktlen);
+ if (ndo->ndo_vflag) {
if (mflags & RMF_RQR)
- (void)printf("RQR ");
+ ND_PRINT("RQR ");
if (mflags & RMF_RTS)
- (void)printf("RTS ");
+ ND_PRINT("RTS ");
if (mflags & RMF_IE)
- (void)printf("IE ");
- (void)printf("%d hops ", hops);
+ ND_PRINT("IE ");
+ ND_PRINT("%u hops ", hops);
}
- print_nsp(nspp, nsplen);
+ if (!print_nsp(ndo, nspp, nsplen))
+ goto invalid;
+ return;
+
+invalid:
+ nd_print_invalid(ndo);
}
-static void
-print_decnet_ctlmsg(register const union routehdr *rhp, u_int length)
+static int
+print_decnet_ctlmsg(netdissect_options *ndo,
+ const union routehdr *rhp, u_int length,
+ u_int caplen)
{
- int mflags = EXTRACT_LE_8BITS(rhp->rh_short.sh_flags);
- register union controlmsg *cmp = (union controlmsg *)rhp;
- int src, dst, info, blksize, eco, ueco, hello, other, vers;
- etheraddr srcea, rtea;
- int priority;
- char *rhpx = (char *)rhp;
+ /* Our caller has already checked for mflags */
+ u_int mflags = GET_U_1(rhp->rh_short.sh_flags);
+ const union controlmsg *cmp = (const union controlmsg *)rhp;
+ uint16_t src, dst;
+ u_int info, blksize, eco, ueco, hello, other, vers;
+ u_int priority;
+ const u_char *rhpx = (const u_char *)rhp;
switch (mflags & RMF_CTLMASK) {
case RMF_INIT:
- (void)printf("init ");
- src = EXTRACT_LE_16BITS(cmp->cm_init.in_src);
- info = EXTRACT_LE_8BITS(cmp->cm_init.in_info);
- blksize = EXTRACT_LE_16BITS(cmp->cm_init.in_blksize);
- vers = EXTRACT_LE_8BITS(cmp->cm_init.in_vers);
- eco = EXTRACT_LE_8BITS(cmp->cm_init.in_eco);
- ueco = EXTRACT_LE_8BITS(cmp->cm_init.in_ueco);
- hello = EXTRACT_LE_16BITS(cmp->cm_init.in_hello);
- print_t_info(info);
- (void)printf(
- "src %sblksize %d vers %d eco %d ueco %d hello %d",
- dnaddr_string(src), blksize, vers, eco, ueco,
+ ND_PRINT("init ");
+ if (length < sizeof(struct initmsg))
+ goto invalid;
+ ND_TCHECK_SIZE(&cmp->cm_init);
+ src = GET_LE_U_2(cmp->cm_init.in_src);
+ info = GET_U_1(cmp->cm_init.in_info);
+ blksize = GET_LE_U_2(cmp->cm_init.in_blksize);
+ vers = GET_U_1(cmp->cm_init.in_vers);
+ eco = GET_U_1(cmp->cm_init.in_eco);
+ ueco = GET_U_1(cmp->cm_init.in_ueco);
+ hello = GET_LE_U_2(cmp->cm_init.in_hello);
+ print_t_info(ndo, info);
+ ND_PRINT("src %sblksize %u vers %u eco %u ueco %u hello %u",
+ dnaddr_string(ndo, src), blksize, vers, eco, ueco,
hello);
break;
case RMF_VER:
- (void)printf("verification ");
- src = EXTRACT_LE_16BITS(cmp->cm_ver.ve_src);
- other = EXTRACT_LE_8BITS(cmp->cm_ver.ve_fcnval);
- (void)printf("src %s fcnval %o", dnaddr_string(src), other);
+ ND_PRINT("verification ");
+ if (length < sizeof(struct verifmsg))
+ goto invalid;
+ src = GET_LE_U_2(cmp->cm_ver.ve_src);
+ other = GET_U_1(cmp->cm_ver.ve_fcnval);
+ ND_PRINT("src %s fcnval %o", dnaddr_string(ndo, src), other);
break;
case RMF_TEST:
- (void)printf("test ");
- src = EXTRACT_LE_16BITS(cmp->cm_test.te_src);
- other = EXTRACT_LE_8BITS(cmp->cm_test.te_data);
- (void)printf("src %s data %o", dnaddr_string(src), other);
+ ND_PRINT("test ");
+ if (length < sizeof(struct testmsg))
+ goto invalid;
+ src = GET_LE_U_2(cmp->cm_test.te_src);
+ other = GET_U_1(cmp->cm_test.te_data);
+ ND_PRINT("src %s data %o", dnaddr_string(ndo, src), other);
break;
case RMF_L1ROUT:
- (void)printf("lev-1-routing ");
- src = EXTRACT_LE_16BITS(cmp->cm_l1rou.r1_src);
- (void)printf("src %s ", dnaddr_string(src));
- print_l1_routes(&(rhpx[sizeof(struct l1rout)]),
+ ND_PRINT("lev-1-routing ");
+ if (length < sizeof(struct l1rout))
+ goto invalid;
+ ND_TCHECK_SIZE(&cmp->cm_l1rou);
+ src = GET_LE_U_2(cmp->cm_l1rou.r1_src);
+ ND_PRINT("src %s ", dnaddr_string(ndo, src));
+ print_l1_routes(ndo, &(rhpx[sizeof(struct l1rout)]),
length - sizeof(struct l1rout));
break;
case RMF_L2ROUT:
- (void)printf("lev-2-routing ");
- src = EXTRACT_LE_16BITS(cmp->cm_l2rout.r2_src);
- (void)printf("src %s ", dnaddr_string(src));
- print_l2_routes(&(rhpx[sizeof(struct l2rout)]),
+ ND_PRINT("lev-2-routing ");
+ if (length < sizeof(struct l2rout))
+ goto invalid;
+ ND_TCHECK_SIZE(&cmp->cm_l2rout);
+ src = GET_LE_U_2(cmp->cm_l2rout.r2_src);
+ ND_PRINT("src %s ", dnaddr_string(ndo, src));
+ print_l2_routes(ndo, &(rhpx[sizeof(struct l2rout)]),
length - sizeof(struct l2rout));
break;
case RMF_RHELLO:
- (void)printf("router-hello ");
- vers = EXTRACT_LE_8BITS(cmp->cm_rhello.rh_vers);
- eco = EXTRACT_LE_8BITS(cmp->cm_rhello.rh_eco);
- ueco = EXTRACT_LE_8BITS(cmp->cm_rhello.rh_ueco);
- memcpy((char *)&srcea, (char *)&(cmp->cm_rhello.rh_src),
- sizeof(srcea));
- src = EXTRACT_LE_16BITS(srcea.dne_remote.dne_nodeaddr);
- info = EXTRACT_LE_8BITS(cmp->cm_rhello.rh_info);
- blksize = EXTRACT_LE_16BITS(cmp->cm_rhello.rh_blksize);
- priority = EXTRACT_LE_8BITS(cmp->cm_rhello.rh_priority);
- hello = EXTRACT_LE_16BITS(cmp->cm_rhello.rh_hello);
- print_i_info(info);
- (void)printf(
- "vers %d eco %d ueco %d src %s blksize %d pri %d hello %d",
- vers, eco, ueco, dnaddr_string(src),
+ ND_PRINT("router-hello ");
+ if (length < sizeof(struct rhellomsg))
+ goto invalid;
+ ND_TCHECK_SIZE(&cmp->cm_rhello);
+ vers = GET_U_1(cmp->cm_rhello.rh_vers);
+ eco = GET_U_1(cmp->cm_rhello.rh_eco);
+ ueco = GET_U_1(cmp->cm_rhello.rh_ueco);
+ src =
+ GET_LE_U_2(cmp->cm_rhello.rh_src.dne_remote.dne_nodeaddr);
+ info = GET_U_1(cmp->cm_rhello.rh_info);
+ blksize = GET_LE_U_2(cmp->cm_rhello.rh_blksize);
+ priority = GET_U_1(cmp->cm_rhello.rh_priority);
+ hello = GET_LE_U_2(cmp->cm_rhello.rh_hello);
+ print_i_info(ndo, info);
+ ND_PRINT("vers %u eco %u ueco %u src %s blksize %u pri %u hello %u",
+ vers, eco, ueco, dnaddr_string(ndo, src),
blksize, priority, hello);
print_elist(&(rhpx[sizeof(struct rhellomsg)]),
length - sizeof(struct rhellomsg));
break;
case RMF_EHELLO:
- (void)printf("endnode-hello ");
- vers = EXTRACT_LE_8BITS(cmp->cm_ehello.eh_vers);
- eco = EXTRACT_LE_8BITS(cmp->cm_ehello.eh_eco);
- ueco = EXTRACT_LE_8BITS(cmp->cm_ehello.eh_ueco);
- memcpy((char *)&srcea, (char *)&(cmp->cm_ehello.eh_src),
- sizeof(srcea));
- src = EXTRACT_LE_16BITS(srcea.dne_remote.dne_nodeaddr);
- info = EXTRACT_LE_8BITS(cmp->cm_ehello.eh_info);
- blksize = EXTRACT_LE_16BITS(cmp->cm_ehello.eh_blksize);
+ ND_PRINT("endnode-hello ");
+ if (length < sizeof(struct ehellomsg))
+ goto invalid;
+ vers = GET_U_1(cmp->cm_ehello.eh_vers);
+ eco = GET_U_1(cmp->cm_ehello.eh_eco);
+ ueco = GET_U_1(cmp->cm_ehello.eh_ueco);
+ src =
+ GET_LE_U_2(cmp->cm_ehello.eh_src.dne_remote.dne_nodeaddr);
+ info = GET_U_1(cmp->cm_ehello.eh_info);
+ blksize = GET_LE_U_2(cmp->cm_ehello.eh_blksize);
/*seed*/
- memcpy((char *)&rtea, (char *)&(cmp->cm_ehello.eh_router),
- sizeof(rtea));
- dst = EXTRACT_LE_16BITS(rtea.dne_remote.dne_nodeaddr);
- hello = EXTRACT_LE_16BITS(cmp->cm_ehello.eh_hello);
- other = EXTRACT_LE_8BITS(cmp->cm_ehello.eh_data);
- print_i_info(info);
- (void)printf(
- "vers %d eco %d ueco %d src %s blksize %d rtr %s hello %d data %o",
- vers, eco, ueco, dnaddr_string(src),
- blksize, dnaddr_string(dst), hello, other);
+ dst =
+ GET_LE_U_2(cmp->cm_ehello.eh_router.dne_remote.dne_nodeaddr);
+ hello = GET_LE_U_2(cmp->cm_ehello.eh_hello);
+ other = GET_U_1(cmp->cm_ehello.eh_data);
+ print_i_info(ndo, info);
+ ND_PRINT("vers %u eco %u ueco %u src %s blksize %u rtr %s hello %u data %o",
+ vers, eco, ueco, dnaddr_string(ndo, src),
+ blksize, dnaddr_string(ndo, dst), hello, other);
break;
default:
- (void)printf("unknown control message");
- default_print((u_char *)rhp, length);
+ ND_PRINT("unknown control message");
+ ND_DEFAULTPRINT((const u_char *)rhp, ND_MIN(length, caplen));
break;
}
+ return (1);
+
+invalid:
+ return (0);
}
static void
-print_t_info(int info)
+print_t_info(netdissect_options *ndo,
+ u_int info)
{
- int ntype = info & 3;
+ u_int ntype = info & 3;
switch (ntype) {
- case 0: (void)printf("reserved-ntype? "); break;
- case TI_L2ROUT: (void)printf("l2rout "); break;
- case TI_L1ROUT: (void)printf("l1rout "); break;
- case TI_ENDNODE: (void)printf("endnode "); break;
+ case 0: ND_PRINT("reserved-ntype? "); break;
+ case TI_L2ROUT: ND_PRINT("l2rout "); break;
+ case TI_L1ROUT: ND_PRINT("l1rout "); break;
+ case TI_ENDNODE: ND_PRINT("endnode "); break;
}
if (info & TI_VERIF)
- (void)printf("verif ");
+ ND_PRINT("verif ");
if (info & TI_BLOCK)
- (void)printf("blo ");
+ ND_PRINT("blo ");
}
static void
-print_l1_routes(const char *rp, u_int len)
+print_l1_routes(netdissect_options *ndo,
+ const u_char *rp, u_int len)
{
- int count;
- int id;
- int info;
+ u_int count;
+ u_int id;
+ u_int info;
/* The last short is a checksum */
while (len > (3 * sizeof(short))) {
- count = EXTRACT_LE_16BITS(rp);
+ ND_TCHECK_LEN(rp, 3 * sizeof(short));
+ count = GET_LE_U_2(rp);
if (count > 1024)
return; /* seems to be bogus from here on */
rp += sizeof(short);
len -= sizeof(short);
- id = EXTRACT_LE_16BITS(rp);
+ id = GET_LE_U_2(rp);
rp += sizeof(short);
len -= sizeof(short);
- info = EXTRACT_LE_16BITS(rp);
+ info = GET_LE_U_2(rp);
rp += sizeof(short);
len -= sizeof(short);
- (void)printf("{ids %d-%d cost %d hops %d} ", id, id + count,
+ ND_PRINT("{ids %u-%u cost %u hops %u} ", id, id + count,
RI_COST(info), RI_HOPS(info));
}
}
static void
-print_l2_routes(const char *rp, u_int len)
+print_l2_routes(netdissect_options *ndo,
+ const u_char *rp, u_int len)
{
- int count;
- int area;
- int info;
+ u_int count;
+ u_int area;
+ u_int info;
/* The last short is a checksum */
while (len > (3 * sizeof(short))) {
- count = EXTRACT_LE_16BITS(rp);
+ ND_TCHECK_LEN(rp, 3 * sizeof(short));
+ count = GET_LE_U_2(rp);
if (count > 1024)
return; /* seems to be bogus from here on */
rp += sizeof(short);
len -= sizeof(short);
- area = EXTRACT_LE_16BITS(rp);
+ area = GET_LE_U_2(rp);
rp += sizeof(short);
len -= sizeof(short);
- info = EXTRACT_LE_16BITS(rp);
+ info = GET_LE_U_2(rp);
rp += sizeof(short);
len -= sizeof(short);
- (void)printf("{areas %d-%d cost %d hops %d} ", area, area + count,
+ ND_PRINT("{areas %u-%u cost %u hops %u} ", area, area + count,
RI_COST(info), RI_HOPS(info));
}
}
static void
-print_i_info(int info)
+print_i_info(netdissect_options *ndo,
+ u_int info)
{
- int ntype = info & II_TYPEMASK;
+ u_int ntype = info & II_TYPEMASK;
switch (ntype) {
- case 0: (void)printf("reserved-ntype? "); break;
- case II_L2ROUT: (void)printf("l2rout "); break;
- case II_L1ROUT: (void)printf("l1rout "); break;
- case II_ENDNODE: (void)printf("endnode "); break;
+ case 0: ND_PRINT("reserved-ntype? "); break;
+ case II_L2ROUT: ND_PRINT("l2rout "); break;
+ case II_L1ROUT: ND_PRINT("l1rout "); break;
+ case II_ENDNODE: ND_PRINT("endnode "); break;
}
if (info & II_VERIF)
- (void)printf("verif ");
+ ND_PRINT("verif ");
if (info & II_NOMCAST)
- (void)printf("nomcast ");
+ ND_PRINT("nomcast ");
if (info & II_BLOCK)
- (void)printf("blo ");
+ ND_PRINT("blo ");
}
static void
-print_elist(const char *elp, u_int len)
+print_elist(const u_char *elp _U_, u_int len _U_)
{
/* Not enough examples available for me to debug this */
}
-static void
-print_nsp(const u_char *nspp, u_int nsplen)
+static int
+print_nsp(netdissect_options *ndo,
+ const u_char *nspp, u_int nsplen)
{
- const struct nsphdr *nsphp = (struct nsphdr *)nspp;
- int dst, src, flags;
+ const struct nsphdr *nsphp = (const struct nsphdr *)nspp;
+ u_int dst, src, flags;
- flags = EXTRACT_LE_8BITS(nsphp->nh_flags);
- dst = EXTRACT_LE_16BITS(nsphp->nh_dst);
- src = EXTRACT_LE_16BITS(nsphp->nh_src);
+ if (nsplen < sizeof(struct nsphdr)) {
+ ND_PRINT(" (nsplen %u < %zu)", nsplen, sizeof(struct nsphdr));
+ goto invalid;
+ }
+ flags = GET_U_1(nsphp->nh_flags);
+ dst = GET_LE_U_2(nsphp->nh_dst);
+ src = GET_LE_U_2(nsphp->nh_src);
switch (flags & NSP_TYPEMASK) {
case MFT_DATA:
case MFS_MOM:
case MFS_EOM:
case MFS_BOM+MFS_EOM:
- printf("data %d>%d ", src, dst);
+ ND_PRINT("data %u>%u ", src, dst);
{
- struct seghdr *shp = (struct seghdr *)nspp;
- int ack;
-#ifdef PRINT_NSPDATA
- u_char *dp;
-#endif
+ const struct seghdr *shp = (const struct seghdr *)nspp;
+ u_int ack;
u_int data_off = sizeof(struct minseghdr);
- ack = EXTRACT_LE_16BITS(shp->sh_seq[0]);
+ if (nsplen < data_off)
+ goto invalid;
+ ack = GET_LE_U_2(shp->sh_seq[0]);
if (ack & SGQ_ACK) { /* acknum field */
if ((ack & SGQ_NAK) == SGQ_NAK)
- (void)printf("nak %d ", ack & SGQ_MASK);
+ ND_PRINT("nak %u ", ack & SGQ_MASK);
else
- (void)printf("ack %d ", ack & SGQ_MASK);
- ack = EXTRACT_LE_16BITS(shp->sh_seq[1]);
+ ND_PRINT("ack %u ", ack & SGQ_MASK);
data_off += sizeof(short);
+ if (nsplen < data_off)
+ goto invalid;
+ ack = GET_LE_U_2(shp->sh_seq[1]);
if (ack & SGQ_OACK) { /* ackoth field */
if ((ack & SGQ_ONAK) == SGQ_ONAK)
- (void)printf("onak %d ", ack & SGQ_MASK);
+ ND_PRINT("onak %u ", ack & SGQ_MASK);
else
- (void)printf("oack %d ", ack & SGQ_MASK);
- ack = EXTRACT_LE_16BITS(shp->sh_seq[2]);
+ ND_PRINT("oack %u ", ack & SGQ_MASK);
data_off += sizeof(short);
+ if (nsplen < data_off)
+ goto invalid;
+ ack = GET_LE_U_2(shp->sh_seq[2]);
}
}
- (void)printf("seg %d ", ack & SGQ_MASK);
-#ifdef PRINT_NSPDATA
- dp = &(nspp[data_off]);
- pdata(dp, 10);
-#endif
+ ND_PRINT("seg %u ", ack & SGQ_MASK);
}
break;
case MFS_ILS+MFS_INT:
- printf("intr ");
+ ND_PRINT("intr ");
{
- struct seghdr *shp = (struct seghdr *)nspp;
- int ack;
-#ifdef PRINT_NSPDATA
- u_char *dp;
-#endif
+ const struct seghdr *shp = (const struct seghdr *)nspp;
+ u_int ack;
u_int data_off = sizeof(struct minseghdr);
- ack = EXTRACT_LE_16BITS(shp->sh_seq[0]);
+ if (nsplen < data_off)
+ goto invalid;
+ ack = GET_LE_U_2(shp->sh_seq[0]);
if (ack & SGQ_ACK) { /* acknum field */
if ((ack & SGQ_NAK) == SGQ_NAK)
- (void)printf("nak %d ", ack & SGQ_MASK);
+ ND_PRINT("nak %u ", ack & SGQ_MASK);
else
- (void)printf("ack %d ", ack & SGQ_MASK);
- ack = EXTRACT_LE_16BITS(shp->sh_seq[1]);
+ ND_PRINT("ack %u ", ack & SGQ_MASK);
data_off += sizeof(short);
+ if (nsplen < data_off)
+ goto invalid;
+ ack = GET_LE_U_2(shp->sh_seq[1]);
if (ack & SGQ_OACK) { /* ackdat field */
if ((ack & SGQ_ONAK) == SGQ_ONAK)
- (void)printf("nakdat %d ", ack & SGQ_MASK);
+ ND_PRINT("nakdat %u ", ack & SGQ_MASK);
else
- (void)printf("ackdat %d ", ack & SGQ_MASK);
- ack = EXTRACT_LE_16BITS(shp->sh_seq[2]);
+ ND_PRINT("ackdat %u ", ack & SGQ_MASK);
data_off += sizeof(short);
+ if (nsplen < data_off)
+ goto invalid;
+ ack = GET_LE_U_2(shp->sh_seq[2]);
}
}
- (void)printf("seg %d ", ack & SGQ_MASK);
-#ifdef PRINT_NSPDATA
- dp = &(nspp[data_off]);
- pdata(dp, 10);
-#endif
+ ND_PRINT("seg %u ", ack & SGQ_MASK);
}
break;
case MFS_ILS:
- (void)printf("link-service %d>%d ", src, dst);
+ ND_PRINT("link-service %u>%u ", src, dst);
{
- struct seghdr *shp = (struct seghdr *)nspp;
- struct lsmsg *lsmp =
- (struct lsmsg *)&(nspp[sizeof(struct seghdr)]);
- int ack;
- int lsflags, fcval;
+ const struct seghdr *shp = (const struct seghdr *)nspp;
+ const struct lsmsg *lsmp =
+ (const struct lsmsg *)(nspp + sizeof(struct seghdr));
+ u_int ack;
+ u_int lsflags, fcval;
- ack = EXTRACT_LE_16BITS(shp->sh_seq[0]);
+ if (nsplen < sizeof(struct seghdr) + sizeof(struct lsmsg))
+ goto invalid;
+ ack = GET_LE_U_2(shp->sh_seq[0]);
if (ack & SGQ_ACK) { /* acknum field */
if ((ack & SGQ_NAK) == SGQ_NAK)
- (void)printf("nak %d ", ack & SGQ_MASK);
+ ND_PRINT("nak %u ", ack & SGQ_MASK);
else
- (void)printf("ack %d ", ack & SGQ_MASK);
- ack = EXTRACT_LE_16BITS(shp->sh_seq[1]);
+ ND_PRINT("ack %u ", ack & SGQ_MASK);
+ ack = GET_LE_U_2(shp->sh_seq[1]);
if (ack & SGQ_OACK) { /* ackdat field */
if ((ack & SGQ_ONAK) == SGQ_ONAK)
- (void)printf("nakdat %d ", ack & SGQ_MASK);
+ ND_PRINT("nakdat %u ", ack & SGQ_MASK);
else
- (void)printf("ackdat %d ", ack & SGQ_MASK);
- ack = EXTRACT_LE_16BITS(shp->sh_seq[2]);
+ ND_PRINT("ackdat %u ", ack & SGQ_MASK);
+ ack = GET_LE_U_2(shp->sh_seq[2]);
}
}
- (void)printf("seg %d ", ack & SGQ_MASK);
- lsflags = EXTRACT_LE_8BITS(lsmp->ls_lsflags);
- fcval = EXTRACT_LE_8BITS(lsmp->ls_fcval);
+ ND_PRINT("seg %u ", ack & SGQ_MASK);
+ lsflags = GET_U_1(lsmp->ls_lsflags);
+ fcval = GET_U_1(lsmp->ls_fcval);
switch (lsflags & LSI_MASK) {
case LSI_DATA:
- (void)printf("dat seg count %d ", fcval);
+ ND_PRINT("dat seg count %u ", fcval);
switch (lsflags & LSM_MASK) {
case LSM_NOCHANGE:
break;
case LSM_DONOTSEND:
- (void)printf("donotsend-data ");
+ ND_PRINT("donotsend-data ");
break;
case LSM_SEND:
- (void)printf("send-data ");
+ ND_PRINT("send-data ");
break;
default:
- (void)printf("reserved-fcmod? %x", lsflags);
+ ND_PRINT("reserved-fcmod? %x", lsflags);
break;
}
break;
case LSI_INTR:
- (void)printf("intr req count %d ", fcval);
+ ND_PRINT("intr req count %u ", fcval);
break;
default:
- (void)printf("reserved-fcval-int? %x", lsflags);
+ ND_PRINT("reserved-fcval-int? %x", lsflags);
break;
}
}
break;
default:
- (void)printf("reserved-subtype? %x %d > %d", flags, src, dst);
+ ND_PRINT("reserved-subtype? %x %u > %u", flags, src, dst);
break;
}
break;
case MFT_ACK:
switch (flags & NSP_SUBMASK) {
case MFS_DACK:
- (void)printf("data-ack %d>%d ", src, dst);
+ ND_PRINT("data-ack %u>%u ", src, dst);
{
- struct ackmsg *amp = (struct ackmsg *)nspp;
- int ack;
+ const struct ackmsg *amp = (const struct ackmsg *)nspp;
+ u_int ack;
- ack = EXTRACT_LE_16BITS(amp->ak_acknum[0]);
+ if (nsplen < sizeof(struct ackmsg))
+ goto invalid;
+ ND_TCHECK_SIZE(amp);
+ ack = GET_LE_U_2(amp->ak_acknum[0]);
if (ack & SGQ_ACK) { /* acknum field */
if ((ack & SGQ_NAK) == SGQ_NAK)
- (void)printf("nak %d ", ack & SGQ_MASK);
+ ND_PRINT("nak %u ", ack & SGQ_MASK);
else
- (void)printf("ack %d ", ack & SGQ_MASK);
- ack = EXTRACT_LE_16BITS(amp->ak_acknum[1]);
+ ND_PRINT("ack %u ", ack & SGQ_MASK);
+ ack = GET_LE_U_2(amp->ak_acknum[1]);
if (ack & SGQ_OACK) { /* ackoth field */
if ((ack & SGQ_ONAK) == SGQ_ONAK)
- (void)printf("onak %d ", ack & SGQ_MASK);
+ ND_PRINT("onak %u ", ack & SGQ_MASK);
else
- (void)printf("oack %d ", ack & SGQ_MASK);
+ ND_PRINT("oack %u ", ack & SGQ_MASK);
}
}
}
break;
case MFS_IACK:
- (void)printf("ils-ack %d>%d ", src, dst);
+ ND_PRINT("ils-ack %u>%u ", src, dst);
{
- struct ackmsg *amp = (struct ackmsg *)nspp;
- int ack;
+ const struct ackmsg *amp = (const struct ackmsg *)nspp;
+ u_int ack;
- ack = EXTRACT_LE_16BITS(amp->ak_acknum[0]);
+ if (nsplen < sizeof(struct ackmsg))
+ goto invalid;
+ ND_TCHECK_SIZE(amp);
+ ack = GET_LE_U_2(amp->ak_acknum[0]);
if (ack & SGQ_ACK) { /* acknum field */
if ((ack & SGQ_NAK) == SGQ_NAK)
- (void)printf("nak %d ", ack & SGQ_MASK);
+ ND_PRINT("nak %u ", ack & SGQ_MASK);
else
- (void)printf("ack %d ", ack & SGQ_MASK);
- ack = EXTRACT_LE_16BITS(amp->ak_acknum[1]);
+ ND_PRINT("ack %u ", ack & SGQ_MASK);
+ ack = GET_LE_U_2(amp->ak_acknum[1]);
if (ack & SGQ_OACK) { /* ackdat field */
if ((ack & SGQ_ONAK) == SGQ_ONAK)
- (void)printf("nakdat %d ", ack & SGQ_MASK);
+ ND_PRINT("nakdat %u ", ack & SGQ_MASK);
else
- (void)printf("ackdat %d ", ack & SGQ_MASK);
+ ND_PRINT("ackdat %u ", ack & SGQ_MASK);
}
}
}
break;
case MFS_CACK:
- (void)printf("conn-ack %d", dst);
+ ND_PRINT("conn-ack %u", dst);
break;
default:
- (void)printf("reserved-acktype? %x %d > %d", flags, src, dst);
+ ND_PRINT("reserved-acktype? %x %u > %u", flags, src, dst);
break;
}
break;
case MFS_CI:
case MFS_RCI:
if ((flags & NSP_SUBMASK) == MFS_CI)
- (void)printf("conn-initiate ");
+ ND_PRINT("conn-initiate ");
else
- (void)printf("retrans-conn-initiate ");
- (void)printf("%d>%d ", src, dst);
+ ND_PRINT("retrans-conn-initiate ");
+ ND_PRINT("%u>%u ", src, dst);
{
- struct cimsg *cimp = (struct cimsg *)nspp;
- int services, info, segsize;
-#ifdef PRINT_NSPDATA
- u_char *dp;
-#endif
+ const struct cimsg *cimp = (const struct cimsg *)nspp;
+ u_int services, info, segsize;
- services = EXTRACT_LE_8BITS(cimp->ci_services);
- info = EXTRACT_LE_8BITS(cimp->ci_info);
- segsize = EXTRACT_LE_16BITS(cimp->ci_segsize);
+ if (nsplen < sizeof(struct cimsg))
+ goto invalid;
+ services = GET_U_1(cimp->ci_services);
+ info = GET_U_1(cimp->ci_info);
+ segsize = GET_LE_U_2(cimp->ci_segsize);
switch (services & COS_MASK) {
case COS_NONE:
break;
case COS_SEGMENT:
- (void)printf("seg ");
+ ND_PRINT("seg ");
break;
case COS_MESSAGE:
- (void)printf("msg ");
- break;
- case COS_CRYPTSER:
- (void)printf("crypt ");
+ ND_PRINT("msg ");
break;
}
switch (info & COI_MASK) {
case COI_32:
- (void)printf("ver 3.2 ");
+ ND_PRINT("ver 3.2 ");
break;
case COI_31:
- (void)printf("ver 3.1 ");
+ ND_PRINT("ver 3.1 ");
break;
case COI_40:
- (void)printf("ver 4.0 ");
+ ND_PRINT("ver 4.0 ");
break;
case COI_41:
- (void)printf("ver 4.1 ");
+ ND_PRINT("ver 4.1 ");
break;
}
- (void)printf("segsize %d ", segsize);
-#ifdef PRINT_NSPDATA
- dp = &(nspp[sizeof(struct cimsg)]);
- pdata(dp, nsplen - sizeof(struct cimsg));
-#endif
+ ND_PRINT("segsize %u ", segsize);
}
break;
case MFS_CC:
- (void)printf("conn-confirm %d>%d ", src, dst);
+ ND_PRINT("conn-confirm %u>%u ", src, dst);
{
- struct ccmsg *ccmp = (struct ccmsg *)nspp;
- int services, info;
+ const struct ccmsg *ccmp = (const struct ccmsg *)nspp;
+ u_int services, info;
u_int segsize, optlen;
-#ifdef PRINT_NSPDATA
- u_char *dp;
-#endif
- services = EXTRACT_LE_8BITS(ccmp->cc_services);
- info = EXTRACT_LE_8BITS(ccmp->cc_info);
- segsize = EXTRACT_LE_16BITS(ccmp->cc_segsize);
- optlen = EXTRACT_LE_8BITS(ccmp->cc_optlen);
+ if (nsplen < sizeof(struct ccmsg))
+ goto invalid;
+ services = GET_U_1(ccmp->cc_services);
+ info = GET_U_1(ccmp->cc_info);
+ segsize = GET_LE_U_2(ccmp->cc_segsize);
+ optlen = GET_U_1(ccmp->cc_optlen);
switch (services & COS_MASK) {
case COS_NONE:
break;
case COS_SEGMENT:
- (void)printf("seg ");
+ ND_PRINT("seg ");
break;
case COS_MESSAGE:
- (void)printf("msg ");
- break;
- case COS_CRYPTSER:
- (void)printf("crypt ");
+ ND_PRINT("msg ");
break;
}
switch (info & COI_MASK) {
case COI_32:
- (void)printf("ver 3.2 ");
+ ND_PRINT("ver 3.2 ");
break;
case COI_31:
- (void)printf("ver 3.1 ");
+ ND_PRINT("ver 3.1 ");
break;
case COI_40:
- (void)printf("ver 4.0 ");
+ ND_PRINT("ver 4.0 ");
break;
case COI_41:
- (void)printf("ver 4.1 ");
+ ND_PRINT("ver 4.1 ");
break;
}
- (void)printf("segsize %d ", segsize);
+ ND_PRINT("segsize %u ", segsize);
if (optlen) {
- (void)printf("optlen %d ", optlen);
-#ifdef PRINT_NSPDATA
- optlen = min(optlen, nsplen - sizeof(struct ccmsg));
- dp = &(nspp[sizeof(struct ccmsg)]);
- pdata(dp, optlen);
-#endif
+ ND_PRINT("optlen %u ", optlen);
}
}
break;
case MFS_DI:
- (void)printf("disconn-initiate %d>%d ", src, dst);
+ ND_PRINT("disconn-initiate %u>%u ", src, dst);
{
- struct dimsg *dimp = (struct dimsg *)nspp;
- int reason;
+ const struct dimsg *dimp = (const struct dimsg *)nspp;
+ u_int reason;
u_int optlen;
-#ifdef PRINT_NSPDATA
- u_char *dp;
-#endif
- reason = EXTRACT_LE_16BITS(dimp->di_reason);
- optlen = EXTRACT_LE_8BITS(dimp->di_optlen);
+ if (nsplen < sizeof(struct dimsg))
+ goto invalid;
+ reason = GET_LE_U_2(dimp->di_reason);
+ optlen = GET_U_1(dimp->di_optlen);
- print_reason(reason);
+ print_reason(ndo, reason);
if (optlen) {
- (void)printf("optlen %d ", optlen);
-#ifdef PRINT_NSPDATA
- optlen = min(optlen, nsplen - sizeof(struct dimsg));
- dp = &(nspp[sizeof(struct dimsg)]);
- pdata(dp, optlen);
-#endif
+ ND_PRINT("optlen %u ", optlen);
}
}
break;
case MFS_DC:
- (void)printf("disconn-confirm %d>%d ", src, dst);
+ ND_PRINT("disconn-confirm %u>%u ", src, dst);
{
- struct dcmsg *dcmp = (struct dcmsg *)nspp;
- int reason;
+ const struct dcmsg *dcmp = (const struct dcmsg *)nspp;
+ u_int reason;
- reason = EXTRACT_LE_16BITS(dcmp->dc_reason);
+ reason = GET_LE_U_2(dcmp->dc_reason);
- print_reason(reason);
+ print_reason(ndo, reason);
}
break;
default:
- (void)printf("reserved-ctltype? %x %d > %d", flags, src, dst);
+ ND_PRINT("reserved-ctltype? %x %u > %u", flags, src, dst);
break;
}
break;
default:
- (void)printf("reserved-type? %x %d > %d", flags, src, dst);
+ ND_PRINT("reserved-type? %x %u > %u", flags, src, dst);
break;
}
+ return (1);
+
+invalid:
+ return (0);
}
-static struct tok reason2str[] = {
+static const struct tok reason2str[] = {
{ UC_OBJREJECT, "object rejected connect" },
{ UC_RESOURCES, "insufficient resources" },
{ UC_NOSUCHNODE, "unrecognized node name" },
};
static void
-print_reason(register int reason)
+print_reason(netdissect_options *ndo,
+ u_int reason)
{
- printf("%s ", tok2str(reason2str, "reason-%d", reason));
+ ND_PRINT("%s ", tok2str(reason2str, "reason-%u", reason));
}
-char *
-dnnum_string(u_short dnaddr)
+const char *
+dnnum_string(netdissect_options *ndo, u_short dnaddr)
{
char *str;
size_t siz;
- int area = (u_short)(dnaddr & AREAMASK) >> AREASHIFT;
- int node = dnaddr & NODEMASK;
+ u_int area = (u_short)(dnaddr & AREAMASK) >> AREASHIFT;
+ u_int node = dnaddr & NODEMASK;
+ /* malloc() return used by the 'dnaddrtable' hash table: do not free() */
str = (char *)malloc(siz = sizeof("00.0000"));
if (str == NULL)
- error("dnnum_string: malloc");
- snprintf(str, siz, "%d.%d", area, node);
+ (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: malloc", __func__);
+ snprintf(str, siz, "%u.%u", area, node);
return(str);
}
-
-char *
-dnname_string(u_short dnaddr)
-{
-#ifdef HAVE_LIBDNET
- struct dn_naddr dna;
-
- dna.a_len = sizeof(short);
- memcpy((char *)dna.a_addr, (char *)&dnaddr, sizeof(short));
- return (savestr(dnet_htoa(&dna)));
-#else
- return(dnnum_string(dnaddr)); /* punt */
-#endif
-}
-
-#ifdef PRINT_NSPDATA
-static void
-pdata(u_char *dp, u_int maxlen)
-{
- char c;
- u_int x = maxlen;
-
- while (x-- > 0) {
- c = *dp++;
- if (isprint(c))
- putchar(c);
- else
- printf("\\%o", c & 0xFF);
- }
-}
-#endif
projects / tcpdump / blobdiff