/* $NetBSD: print-decnet.c,v 1.3 2002/02/18 09:37:06 itojun Exp $ */ /* * Copyright (c) 1992, 1993, 1994, 1995, 1996, 1997 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that: (1) source code distributions * retain the above copyright notice and this paragraph in its entirety, (2) * distributions including binary code include the above copyright notice and * this paragraph in its entirety in the documentation or other materials * provided with the distribution, and (3) all advertising materials mentioning * features or use of this software display the following acknowledgement: * ``This product includes software developed by the University of California, * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of * the University nor the names of its contributors may be used to endorse * or promote products derived from this software without specific prior * written permission. * 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. */ #include #ifndef lint #if 0 static const char rcsid[] = "@(#) Header: /tcpdump/master/tcpdump/print-decnet.c,v 1.33 2001/09/17 21:57:59 fenner Exp (LBL)"; #else __RCSID("$NetBSD: print-decnet.c,v 1.3 2002/02/18 09:37:06 itojun Exp $"); #endif #endif #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include struct mbuf; struct rtentry; #ifdef HAVE_LIBDNET #include #endif #include #include #include #include #include #include "decnet.h" #include "extract.h" #include "interface.h" #include "addrtoname.h" /* 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 void decnet_print(register const u_char *ap, register u_int length, register 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 u_char *nspp; if (length < sizeof(struct shorthdr)) { (void)printf("[|decnet]"); return; } pktlen = EXTRACT_LE_16BITS(ap); 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); 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); 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); } if (mflags & RMF_FVER) { (void) printf("future-version-decnet"); default_print(ap, length); return; } /* is it a control message? */ if (mflags & RMF_CTLMSG) { print_decnet_ctlmsg(rhp, min(length, caplen)); return; } switch (mflags & RMF_MASK) { case RMF_LONG: dst = EXTRACT_LE_16BITS(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))); 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))); break; default: (void) printf("unknown message flags under mask"); default_print((u_char *)ap, length); return; } (void)printf("%s > %s %d ", dnaddr_string(src), dnaddr_string(dst), pktlen); if (vflag) { if (mflags & RMF_RQR) (void)printf("RQR "); if (mflags & RMF_RTS) (void)printf("RTS "); if (mflags & RMF_IE) (void)printf("IE "); (void)printf("%d hops ", hops); } print_nsp(nspp, nsplen); } static void print_decnet_ctlmsg(register const union routehdr *rhp, u_int length) { 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; 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, 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); 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); 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)]), 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)]), 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), 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); /*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); break; default: (void)printf("unknown control message"); default_print((u_char *)rhp, length); break; } } static void print_t_info(int info) { 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; } if (info & TI_VERIF) (void)printf("verif "); if (info & TI_BLOCK) (void)printf("blo "); } static void print_l1_routes(const char *rp, u_int len) { int count; int id; int info; /* The last short is a checksum */ while (len > (3 * sizeof(short))) { count = EXTRACT_LE_16BITS(rp); if (count > 1024) return; /* seems to be bogus from here on */ rp += sizeof(short); len -= sizeof(short); id = EXTRACT_LE_16BITS(rp); rp += sizeof(short); len -= sizeof(short); info = EXTRACT_LE_16BITS(rp); rp += sizeof(short); len -= sizeof(short); (void)printf("{ids %d-%d cost %d hops %d} ", id, id + count, RI_COST(info), RI_HOPS(info)); } } static void print_l2_routes(const char *rp, u_int len) { int count; int area; int info; /* The last short is a checksum */ while (len > (3 * sizeof(short))) { count = EXTRACT_LE_16BITS(rp); if (count > 1024) return; /* seems to be bogus from here on */ rp += sizeof(short); len -= sizeof(short); area = EXTRACT_LE_16BITS(rp); rp += sizeof(short); len -= sizeof(short); info = EXTRACT_LE_16BITS(rp); rp += sizeof(short); len -= sizeof(short); (void)printf("{areas %d-%d cost %d hops %d} ", area, area + count, RI_COST(info), RI_HOPS(info)); } } static void print_i_info(int info) { 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; } if (info & II_VERIF) (void)printf("verif "); if (info & II_NOMCAST) (void)printf("nomcast "); if (info & II_BLOCK) (void)printf("blo "); } static void print_elist(const char *elp, u_int len) { /* Not enough examples available for me to debug this */ } static void print_nsp(const u_char *nspp, u_int nsplen) { const struct nsphdr *nsphp = (struct nsphdr *)nspp; 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); switch (flags & NSP_TYPEMASK) { case MFT_DATA: switch (flags & NSP_SUBMASK) { case MFS_BOM: case MFS_MOM: case MFS_EOM: case MFS_BOM+MFS_EOM: printf("data %d>%d ", src, dst); { struct seghdr *shp = (struct seghdr *)nspp; int ack; #ifdef PRINT_NSPDATA u_char *dp; #endif u_int data_off = sizeof(struct minseghdr); ack = EXTRACT_LE_16BITS(shp->sh_seq[0]); if (ack & SGQ_ACK) { /* acknum field */ if ((ack & SGQ_NAK) == SGQ_NAK) (void)printf("nak %d ", ack & SGQ_MASK); else (void)printf("ack %d ", ack & SGQ_MASK); ack = EXTRACT_LE_16BITS(shp->sh_seq[1]); data_off += sizeof(short); if (ack & SGQ_OACK) { /* ackoth field */ if ((ack & SGQ_ONAK) == SGQ_ONAK) (void)printf("onak %d ", ack & SGQ_MASK); else (void)printf("oack %d ", ack & SGQ_MASK); ack = EXTRACT_LE_16BITS(shp->sh_seq[2]); data_off += sizeof(short); } } (void)printf("seg %d ", ack & SGQ_MASK); #ifdef PRINT_NSPDATA dp = &(nspp[data_off]); pdata(dp, 10); #endif } break; case MFS_ILS+MFS_INT: printf("intr "); { struct seghdr *shp = (struct seghdr *)nspp; int ack; #ifdef PRINT_NSPDATA u_char *dp; #endif u_int data_off = sizeof(struct minseghdr); ack = EXTRACT_LE_16BITS(shp->sh_seq[0]); if (ack & SGQ_ACK) { /* acknum field */ if ((ack & SGQ_NAK) == SGQ_NAK) (void)printf("nak %d ", ack & SGQ_MASK); else (void)printf("ack %d ", ack & SGQ_MASK); ack = EXTRACT_LE_16BITS(shp->sh_seq[1]); data_off += sizeof(short); if (ack & SGQ_OACK) { /* ackdat field */ if ((ack & SGQ_ONAK) == SGQ_ONAK) (void)printf("nakdat %d ", ack & SGQ_MASK); else (void)printf("ackdat %d ", ack & SGQ_MASK); ack = EXTRACT_LE_16BITS(shp->sh_seq[2]); data_off += sizeof(short); } } (void)printf("seg %d ", ack & SGQ_MASK); #ifdef PRINT_NSPDATA dp = &(nspp[data_off]); pdata(dp, 10); #endif } break; case MFS_ILS: (void)printf("link-service %d>%d ", src, dst); { struct seghdr *shp = (struct seghdr *)nspp; struct lsmsg *lsmp = (struct lsmsg *)&(nspp[sizeof(struct seghdr)]); int ack; int lsflags, fcval; ack = EXTRACT_LE_16BITS(shp->sh_seq[0]); if (ack & SGQ_ACK) { /* acknum field */ if ((ack & SGQ_NAK) == SGQ_NAK) (void)printf("nak %d ", ack & SGQ_MASK); else (void)printf("ack %d ", ack & SGQ_MASK); ack = EXTRACT_LE_16BITS(shp->sh_seq[1]); if (ack & SGQ_OACK) { /* ackdat field */ if ((ack & SGQ_ONAK) == SGQ_ONAK) (void)printf("nakdat %d ", ack & SGQ_MASK); else (void)printf("ackdat %d ", ack & SGQ_MASK); ack = EXTRACT_LE_16BITS(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); switch (lsflags & LSI_MASK) { case LSI_DATA: (void)printf("dat seg count %d ", fcval); switch (lsflags & LSM_MASK) { case LSM_NOCHANGE: break; case LSM_DONOTSEND: (void)printf("donotsend-data "); break; case LSM_SEND: (void)printf("send-data "); break; default: (void)printf("reserved-fcmod? %x", lsflags); break; } break; case LSI_INTR: (void)printf("intr req count %d ", fcval); break; default: (void)printf("reserved-fcval-int? %x", lsflags); break; } } break; default: (void)printf("reserved-subtype? %x %d > %d", flags, src, dst); break; } break; case MFT_ACK: switch (flags & NSP_SUBMASK) { case MFS_DACK: (void)printf("data-ack %d>%d ", src, dst); { struct ackmsg *amp = (struct ackmsg *)nspp; int ack; ack = EXTRACT_LE_16BITS(amp->ak_acknum[0]); if (ack & SGQ_ACK) { /* acknum field */ if ((ack & SGQ_NAK) == SGQ_NAK) (void)printf("nak %d ", ack & SGQ_MASK); else (void)printf("ack %d ", ack & SGQ_MASK); ack = EXTRACT_LE_16BITS(amp->ak_acknum[1]); if (ack & SGQ_OACK) { /* ackoth field */ if ((ack & SGQ_ONAK) == SGQ_ONAK) (void)printf("onak %d ", ack & SGQ_MASK); else (void)printf("oack %d ", ack & SGQ_MASK); } } } break; case MFS_IACK: (void)printf("ils-ack %d>%d ", src, dst); { struct ackmsg *amp = (struct ackmsg *)nspp; int ack; ack = EXTRACT_LE_16BITS(amp->ak_acknum[0]); if (ack & SGQ_ACK) { /* acknum field */ if ((ack & SGQ_NAK) == SGQ_NAK) (void)printf("nak %d ", ack & SGQ_MASK); else (void)printf("ack %d ", ack & SGQ_MASK); ack = EXTRACT_LE_16BITS(amp->ak_acknum[1]); if (ack & SGQ_OACK) { /* ackdat field */ if ((ack & SGQ_ONAK) == SGQ_ONAK) (void)printf("nakdat %d ", ack & SGQ_MASK); else (void)printf("ackdat %d ", ack & SGQ_MASK); } } } break; case MFS_CACK: (void)printf("conn-ack %d", dst); break; default: (void)printf("reserved-acktype? %x %d > %d", flags, src, dst); break; } break; case MFT_CTL: switch (flags & NSP_SUBMASK) { case MFS_CI: case MFS_RCI: if ((flags & NSP_SUBMASK) == MFS_CI) (void)printf("conn-initiate "); else (void)printf("retrans-conn-initiate "); (void)printf("%d>%d ", src, dst); { struct cimsg *cimp = (struct cimsg *)nspp; int services, info, segsize; #ifdef PRINT_NSPDATA u_char *dp; #endif services = EXTRACT_LE_8BITS(cimp->ci_services); info = EXTRACT_LE_8BITS(cimp->ci_info); segsize = EXTRACT_LE_16BITS(cimp->ci_segsize); switch (services & COS_MASK) { case COS_NONE: break; case COS_SEGMENT: (void)printf("seg "); break; case COS_MESSAGE: (void)printf("msg "); break; case COS_CRYPTSER: (void)printf("crypt "); break; } switch (info & COI_MASK) { case COI_32: (void)printf("ver 3.2 "); break; case COI_31: (void)printf("ver 3.1 "); break; case COI_40: (void)printf("ver 4.0 "); break; case COI_41: (void)printf("ver 4.1 "); break; } (void)printf("segsize %d ", segsize); #ifdef PRINT_NSPDATA dp = &(nspp[sizeof(struct cimsg)]); pdata(dp, nsplen - sizeof(struct cimsg)); #endif } break; case MFS_CC: (void)printf("conn-confirm %d>%d ", src, dst); { struct ccmsg *ccmp = (struct ccmsg *)nspp; 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); switch (services & COS_MASK) { case COS_NONE: break; case COS_SEGMENT: (void)printf("seg "); break; case COS_MESSAGE: (void)printf("msg "); break; case COS_CRYPTSER: (void)printf("crypt "); break; } switch (info & COI_MASK) { case COI_32: (void)printf("ver 3.2 "); break; case COI_31: (void)printf("ver 3.1 "); break; case COI_40: (void)printf("ver 4.0 "); break; case COI_41: (void)printf("ver 4.1 "); break; } (void)printf("segsize %d ", 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 } } break; case MFS_DI: (void)printf("disconn-initiate %d>%d ", src, dst); { struct dimsg *dimp = (struct dimsg *)nspp; 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); print_reason(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 } } break; case MFS_DC: (void)printf("disconn-confirm %d>%d ", src, dst); { struct dcmsg *dcmp = (struct dcmsg *)nspp; int reason; reason = EXTRACT_LE_16BITS(dcmp->dc_reason); print_reason(reason); } break; default: (void)printf("reserved-ctltype? %x %d > %d", flags, src, dst); break; } break; default: (void)printf("reserved-type? %x %d > %d", flags, src, dst); break; } } static struct tok reason2str[] = { { UC_OBJREJECT, "object rejected connect" }, { UC_RESOURCES, "insufficient resources" }, { UC_NOSUCHNODE, "unrecognized node name" }, { DI_SHUT, "node is shutting down" }, { UC_NOSUCHOBJ, "unrecognized object" }, { UC_INVOBJFORMAT, "invalid object name format" }, { UC_OBJTOOBUSY, "object too busy" }, { DI_PROTOCOL, "protocol error discovered" }, { DI_TPA, "third party abort" }, { UC_USERABORT, "user abort" }, { UC_INVNODEFORMAT, "invalid node name format" }, { UC_LOCALSHUT, "local node shutting down" }, { DI_LOCALRESRC, "insufficient local resources" }, { DI_REMUSERRESRC, "insufficient remote user resources" }, { UC_ACCESSREJECT, "invalid access control information" }, { DI_BADACCNT, "bad ACCOUNT information" }, { UC_NORESPONSE, "no response from object" }, { UC_UNREACHABLE, "node unreachable" }, { DC_NOLINK, "no link terminate" }, { DC_COMPLETE, "disconnect complete" }, { DI_BADIMAGE, "bad image data in connect" }, { DI_SERVMISMATCH, "cryptographic service mismatch" }, { 0, NULL } }; static void print_reason(register int reason) { printf("%s ", tok2str(reason2str, "reason-%d", reason)); } const char * dnnum_string(u_short dnaddr) { char *str; size_t siz; int area = (u_short)(dnaddr & AREAMASK) >> AREASHIFT; int node = dnaddr & NODEMASK; str = (char *)malloc(siz = sizeof("00.0000")); if (str == NULL) error("dnnum_string: malloc"); snprintf(str, siz, "%d.%d", area, node); return(str); } const 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 (strdup(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++; safeputchar(c); } } #endif