#include <stdlib.h>
#include <string.h>
-#include "decnet.h"
#include "extract.h"
#include "interface.h"
#include "addrtoname.h"
static const char tstr[] = "[|decnet]";
+#ifndef WIN32
+typedef u_int8_t byte[1]; /* single byte field */
+#else
+/*
+ * the keyword 'byte' generates conflicts in Windows
+ */
+typedef unsigned char Byte[1]; /* single byte field */
+#define byte Byte
+#endif /* WIN32 */
+typedef u_int8_t word[2]; /* 2 byte field */
+typedef u_int8_t longword[4]; /* 4 bytes field */
+
+/*
+ * Definitions for DECNET Phase IV protocol headers
+ */
+union etheraddress {
+ u_int8_t dne_addr[6]; /* full ethernet address */
+ struct {
+ u_int8_t dne_hiord[4]; /* DECnet HIORD prefix */
+ u_int8_t dne_nodeaddr[2]; /* DECnet node address */
+ } dne_remote;
+};
+
+typedef union etheraddress 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 DN_MAXADDL 20 /* max size of DECnet address */
+struct dn_naddr {
+ u_int16_t a_len; /* length of address */
+ u_int8_t a_addr[DN_MAXADDL]; /* address as bytes */
+};
+
+/*
+ * 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 initmsgIII /* phase III initialization message */
+ {
+ byte inIII_flags; /* route flags */
+ word inIII_src; /* source node address */
+ byte inIII_info; /* routing layer information */
+ word inIII_blksize; /* maximum data link block size */
+ byte inIII_vers; /* version number */
+ byte inIII_eco; /* ECO number */
+ byte inIII_ueco; /* user ECO number */
+ byte inIII_rsvd; /* reserved image field */
+ };
+
+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)
+\f
+/*
+ * 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_CRYPTSER 020 /* cryptographic services requested */
+#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 int print_decnet_ctlmsg(const union routehdr *, u_int, u_int);
static void print_t_info(int);
projects / tcpdump / commitdiff
