/* * Copyright (c) 1990, 1991, 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. * * Internet, ethernet, port, and protocol string to address * and address to string conversion routines */ #include #ifndef lint __RCSID("$NetBSD: addrtoname.c,v 1.13 2024/09/02 16:15:29 christos Exp $"); #endif #include #ifdef HAVE_CASPER #include #include #endif /* HAVE_CASPER */ #include "netdissect-stdinc.h" #ifdef USE_ETHER_NTOHOST #if defined(NET_ETHERNET_H_DECLARES_ETHER_NTOHOST) /* * OK, just include . */ #include #elif defined(NETINET_ETHER_H_DECLARES_ETHER_NTOHOST) /* * OK, just include */ #include #elif defined(SYS_ETHERNET_H_DECLARES_ETHER_NTOHOST) /* * OK, just include */ #include #elif defined(ARPA_INET_H_DECLARES_ETHER_NTOHOST) /* * OK, just include */ #include #elif defined(NETINET_IF_ETHER_H_DECLARES_ETHER_NTOHOST) /* * OK, include , after all the other stuff we * need to include or define for its benefit. */ #define NEED_NETINET_IF_ETHER_H #else /* * We'll have to declare it ourselves. * If defines struct ether_addr, include * it. Otherwise, define it ourselves. */ #ifdef HAVE_STRUCT_ETHER_ADDR #define NEED_NETINET_IF_ETHER_H #else /* HAVE_STRUCT_ETHER_ADDR */ struct ether_addr { /* Beware FreeBSD calls this "octet". */ unsigned char ether_addr_octet[MAC_ADDR_LEN]; }; #endif /* HAVE_STRUCT_ETHER_ADDR */ #endif /* what declares ether_ntohost() */ #ifdef NEED_NETINET_IF_ETHER_H /* * Include diag-control.h before , which too defines a macro * named ND_UNREACHABLE. */ #include "diag-control.h" #include /* Needed on some platforms */ #include /* Needed on some platforms */ #include #endif /* NEED_NETINET_IF_ETHER_H */ #ifndef HAVE_DECL_ETHER_NTOHOST /* * No header declares it, so declare it ourselves. */ extern int ether_ntohost(char *, const struct ether_addr *); #endif /* !defined(HAVE_DECL_ETHER_NTOHOST) */ #endif /* USE_ETHER_NTOHOST */ #include #include #ifndef HAVE_GETSERVENT #include #endif #include #include #include #include #include "netdissect.h" #include "addrtoname.h" #include "addrtostr.h" #include "ethertype.h" #include "llc.h" #include "extract.h" #include "oui.h" /* * hash tables for whatever-to-name translations * * ndo_error() called on strdup(3) failure with S_ERR_ND_MEM_ALLOC status */ #define HASHNAMESIZE 4096 struct hnamemem { uint32_t addr; const char *name; struct hnamemem *nxt; }; static struct hnamemem hnametable[HASHNAMESIZE]; static struct hnamemem tporttable[HASHNAMESIZE]; static struct hnamemem uporttable[HASHNAMESIZE]; static struct hnamemem eprototable[HASHNAMESIZE]; static struct hnamemem dnaddrtable[HASHNAMESIZE]; static struct hnamemem ipxsaptable[HASHNAMESIZE]; #ifdef _WIN32 /* * fake gethostbyaddr for Win2k/XP * gethostbyaddr() returns incorrect value when AF_INET6 is passed * to 3rd argument. * * h_name in struct hostent is only valid. */ static struct hostent * win32_gethostbyaddr(const char *addr, int len, int type) { static struct hostent host; static char hostbuf[NI_MAXHOST]; char hname[NI_MAXHOST]; struct sockaddr_in6 addr6; host.h_name = hostbuf; switch (type) { case AF_INET: return gethostbyaddr(addr, len, type); break; case AF_INET6: memset(&addr6, 0, sizeof(addr6)); addr6.sin6_family = AF_INET6; memcpy(&addr6.sin6_addr, addr, len); if (getnameinfo((struct sockaddr *)&addr6, sizeof(addr6), hname, sizeof(hname), NULL, 0, 0)) { return NULL; } else { strlcpy(host.h_name, hname, NI_MAXHOST); return &host; } break; default: return NULL; } } #define gethostbyaddr win32_gethostbyaddr #endif /* _WIN32 */ struct h6namemem { nd_ipv6 addr; char *name; struct h6namemem *nxt; }; static struct h6namemem h6nametable[HASHNAMESIZE]; struct enamemem { u_short e_addr0; u_short e_addr1; u_short e_addr2; const char *e_name; u_char *e_nsap; /* used only for nsaptable[] */ struct enamemem *e_nxt; }; static struct enamemem enametable[HASHNAMESIZE]; static struct enamemem nsaptable[HASHNAMESIZE]; struct bsnamemem { u_short bs_addr0; u_short bs_addr1; u_short bs_addr2; const char *bs_name; u_char *bs_bytes; unsigned int bs_nbytes; struct bsnamemem *bs_nxt; }; static struct bsnamemem bytestringtable[HASHNAMESIZE]; struct protoidmem { uint32_t p_oui; u_short p_proto; const char *p_name; struct protoidmem *p_nxt; }; static struct protoidmem protoidtable[HASHNAMESIZE]; /* * A faster replacement for inet_ntoa(). */ const char * intoa(uint32_t addr) { char *cp; u_int byte; int n; static char buf[sizeof(".xxx.xxx.xxx.xxx")]; addr = ntohl(addr); cp = buf + sizeof(buf); *--cp = '\0'; n = 4; do { byte = addr & 0xff; *--cp = (char)(byte % 10) + '0'; byte /= 10; if (byte > 0) { *--cp = (char)(byte % 10) + '0'; byte /= 10; if (byte > 0) *--cp = (char)byte + '0'; } *--cp = '.'; addr >>= 8; } while (--n > 0); return cp + 1; } static uint32_t f_netmask; static uint32_t f_localnet; #ifdef HAVE_CASPER cap_channel_t *capdns; #endif /* * Return a name for the IP address pointed to by ap. This address * is assumed to be in network byte order. * * NOTE: ap is *NOT* necessarily part of the packet data, so you * *CANNOT* use the ND_TCHECK_* or ND_TTEST_* macros on it. Furthermore, * even in cases where it *is* part of the packet data, the caller * would still have to check for a null return value, even if it's * just printing the return value with "%s" - not all versions of * printf print "(null)" with "%s" and a null pointer, some of them * don't check for a null pointer and crash in that case. * * The callers of this routine should, before handing this routine * a pointer to packet data, be sure that the data is present in * the packet buffer. They should probably do those checks anyway, * as other data at that layer might not be IP addresses, and it * also needs to check whether they're present in the packet buffer. */ const char * ipaddr_string(netdissect_options *ndo, const u_char *ap) { struct hostent *hp; uint32_t addr; struct hnamemem *p; memcpy(&addr, ap, sizeof(addr)); p = &hnametable[addr & (HASHNAMESIZE-1)]; for (; p->nxt; p = p->nxt) { if (p->addr == addr) return (p->name); } p->addr = addr; p->nxt = newhnamemem(ndo); /* * Print names unless: * (1) -n was given. * (2) Address is foreign and -f was given. (If -f was not * given, f_netmask and f_localnet are 0 and the test * evaluates to true) */ if (!ndo->ndo_nflag && (addr & f_netmask) == f_localnet) { #ifdef HAVE_CASPER if (capdns != NULL) { hp = cap_gethostbyaddr(capdns, (char *)&addr, 4, AF_INET); } else #endif hp = gethostbyaddr((char *)&addr, 4, AF_INET); if (hp) { char *dotp; p->name = strdup(hp->h_name); if (p->name == NULL) (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: strdup(hp->h_name)", __func__); if (ndo->ndo_Nflag) { /* Remove domain qualifications */ dotp = strchr(p->name, '.'); if (dotp) *dotp = '\0'; } return (p->name); } } p->name = strdup(intoa(addr)); if (p->name == NULL) (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: strdup(intoa(addr))", __func__); return (p->name); } /* * Return a name for the IP6 address pointed to by ap. This address * is assumed to be in network byte order. */ const char * ip6addr_string(netdissect_options *ndo, const u_char *ap) { struct hostent *hp; union { nd_ipv6 addr; struct for_hash_addr { char fill[14]; uint16_t d; } addra; } addr; struct h6namemem *p; const char *cp; char ntop_buf[INET6_ADDRSTRLEN]; memcpy(&addr, ap, sizeof(addr)); p = &h6nametable[addr.addra.d & (HASHNAMESIZE-1)]; for (; p->nxt; p = p->nxt) { if (memcmp(&p->addr, &addr, sizeof(addr)) == 0) return (p->name); } memcpy(p->addr, addr.addr, sizeof(nd_ipv6)); p->nxt = newh6namemem(ndo); /* * Do not print names if -n was given. */ if (!ndo->ndo_nflag) { #ifdef HAVE_CASPER if (capdns != NULL) { hp = cap_gethostbyaddr(capdns, (char *)&addr, sizeof(addr), AF_INET6); } else #endif hp = gethostbyaddr((char *)&addr, sizeof(addr), AF_INET6); if (hp) { char *dotp; p->name = strdup(hp->h_name); if (p->name == NULL) (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: strdup(hp->h_name)", __func__); if (ndo->ndo_Nflag) { /* Remove domain qualifications */ dotp = strchr(p->name, '.'); if (dotp) *dotp = '\0'; } return (p->name); } } cp = addrtostr6(ap, ntop_buf, sizeof(ntop_buf)); p->name = strdup(cp); if (p->name == NULL) (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: strdup(cp)", __func__); return (p->name); } static const char hex[16] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' }; /* * Convert an octet to two hex digits. * * Coverity appears either: * * not to believe the C standard when it asserts that a uint8_t is * exactly 8 bits in size; * * not to believe that an unsigned type of exactly 8 bits has a value * in the range of 0 to 255; * * not to believe that, for a range of unsigned values, if you shift * one of those values right by 4 bits, the maximum result value is * the maximum value shifted right by 4 bits, with no stray 1's shifted * in; * * not to believe that 255 >> 4 is 15; * * so it gets upset that we're taking a "tainted" unsigned value, shifting * it right 4 bits, and using it as an index into a 16-element array. * * So we do a stupid pointless masking of the result of the shift with * 0xf, to hammer the point home to Coverity. */ static inline char * octet_to_hex(char *cp, uint8_t octet) { *cp++ = hex[(octet >> 4) & 0xf]; *cp++ = hex[(octet >> 0) & 0xf]; return (cp); } /* Find the hash node that corresponds the ether address 'ep' */ static struct enamemem * lookup_emem(netdissect_options *ndo, const u_char *ep) { u_int i, j, k; struct enamemem *tp; k = (ep[0] << 8) | ep[1]; j = (ep[2] << 8) | ep[3]; i = (ep[4] << 8) | ep[5]; tp = &enametable[(i ^ j) & (HASHNAMESIZE-1)]; while (tp->e_nxt) if (tp->e_addr0 == i && tp->e_addr1 == j && tp->e_addr2 == k) return tp; else tp = tp->e_nxt; tp->e_addr0 = (u_short)i; tp->e_addr1 = (u_short)j; tp->e_addr2 = (u_short)k; tp->e_nxt = (struct enamemem *)calloc(1, sizeof(*tp)); if (tp->e_nxt == NULL) (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: calloc", __func__); return tp; } /* * Find the hash node that corresponds to the bytestring 'bs' * with length 'nlen' */ static struct bsnamemem * lookup_bytestring(netdissect_options *ndo, const u_char *bs, const unsigned int nlen) { struct bsnamemem *tp; u_int i, j, k; if (nlen >= 6) { k = (bs[0] << 8) | bs[1]; j = (bs[2] << 8) | bs[3]; i = (bs[4] << 8) | bs[5]; } else if (nlen >= 4) { k = (bs[0] << 8) | bs[1]; j = (bs[2] << 8) | bs[3]; i = 0; } else i = j = k = 0; tp = &bytestringtable[(i ^ j) & (HASHNAMESIZE-1)]; while (tp->bs_nxt) if (nlen == tp->bs_nbytes && tp->bs_addr0 == i && tp->bs_addr1 == j && tp->bs_addr2 == k && memcmp((const char *)bs, (const char *)(tp->bs_bytes), nlen) == 0) return tp; else tp = tp->bs_nxt; tp->bs_addr0 = (u_short)i; tp->bs_addr1 = (u_short)j; tp->bs_addr2 = (u_short)k; tp->bs_bytes = (u_char *) calloc(1, nlen); if (tp->bs_bytes == NULL) (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: calloc", __func__); memcpy(tp->bs_bytes, bs, nlen); tp->bs_nbytes = nlen; tp->bs_nxt = (struct bsnamemem *)calloc(1, sizeof(*tp)); if (tp->bs_nxt == NULL) (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: calloc", __func__); return tp; } /* Find the hash node that corresponds the NSAP 'nsap' */ static struct enamemem * lookup_nsap(netdissect_options *ndo, const u_char *nsap, u_int nsap_length) { u_int i, j, k; struct enamemem *tp; const u_char *ensap; if (nsap_length > 6) { ensap = nsap + nsap_length - 6; k = (ensap[0] << 8) | ensap[1]; j = (ensap[2] << 8) | ensap[3]; i = (ensap[4] << 8) | ensap[5]; } else i = j = k = 0; tp = &nsaptable[(i ^ j) & (HASHNAMESIZE-1)]; while (tp->e_nxt) if (nsap_length == tp->e_nsap[0] && tp->e_addr0 == i && tp->e_addr1 == j && tp->e_addr2 == k && memcmp((const char *)nsap, (char *)&(tp->e_nsap[1]), nsap_length) == 0) return tp; else tp = tp->e_nxt; tp->e_addr0 = (u_short)i; tp->e_addr1 = (u_short)j; tp->e_addr2 = (u_short)k; tp->e_nsap = (u_char *)malloc(nsap_length + 1); if (tp->e_nsap == NULL) (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: malloc", __func__); tp->e_nsap[0] = (u_char)nsap_length; /* guaranteed < ISONSAP_MAX_LENGTH */ memcpy((char *)&tp->e_nsap[1], (const char *)nsap, nsap_length); tp->e_nxt = (struct enamemem *)calloc(1, sizeof(*tp)); if (tp->e_nxt == NULL) (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: calloc", __func__); return tp; } /* Find the hash node that corresponds the protoid 'pi'. */ static struct protoidmem * lookup_protoid(netdissect_options *ndo, const u_char *pi) { u_int i, j; struct protoidmem *tp; /* 5 octets won't be aligned */ i = (((pi[0] << 8) + pi[1]) << 8) + pi[2]; j = (pi[3] << 8) + pi[4]; /* XXX should be endian-insensitive, but do big-endian testing XXX */ tp = &protoidtable[(i ^ j) & (HASHNAMESIZE-1)]; while (tp->p_nxt) if (tp->p_oui == i && tp->p_proto == j) return tp; else tp = tp->p_nxt; tp->p_oui = i; tp->p_proto = (u_short)j; tp->p_nxt = (struct protoidmem *)calloc(1, sizeof(*tp)); if (tp->p_nxt == NULL) (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: calloc", __func__); return tp; } const char * etheraddr_string(netdissect_options *ndo, const uint8_t *ep) { int i; char *cp; struct enamemem *tp; int oui; char buf[BUFSIZE]; tp = lookup_emem(ndo, ep); if (tp->e_name) return (tp->e_name); #ifdef USE_ETHER_NTOHOST if (!ndo->ndo_nflag) { char buf2[BUFSIZE]; /* * This is a non-const copy of ep for ether_ntohost(), which * has its second argument non-const in OpenBSD. Also saves a * type cast. */ struct ether_addr ea; memcpy (&ea, ep, MAC_ADDR_LEN); if (ether_ntohost(buf2, &ea) == 0) { tp->e_name = strdup(buf2); if (tp->e_name == NULL) (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: strdup(buf2)", __func__); return (tp->e_name); } } #endif cp = buf; oui = EXTRACT_BE_U_3(ep); cp = octet_to_hex(cp, *ep++); for (i = 5; --i >= 0;) { *cp++ = ':'; cp = octet_to_hex(cp, *ep++); } if (!ndo->ndo_nflag) { snprintf(cp, BUFSIZE - (2 + 5*3), " (oui %s)", tok2str(oui_values, "Unknown", oui)); } else *cp = '\0'; tp->e_name = strdup(buf); if (tp->e_name == NULL) (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: strdup(buf)", __func__); return (tp->e_name); } const char * le64addr_string(netdissect_options *ndo, const uint8_t *ep) { const unsigned int len = 8; u_int i; char *cp; struct bsnamemem *tp; char buf[BUFSIZE]; tp = lookup_bytestring(ndo, ep, len); if (tp->bs_name) return (tp->bs_name); cp = buf; for (i = len; i > 0 ; --i) { cp = octet_to_hex(cp, *(ep + i - 1)); *cp++ = ':'; } cp --; *cp = '\0'; tp->bs_name = strdup(buf); if (tp->bs_name == NULL) (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: strdup(buf)", __func__); return (tp->bs_name); } const char * linkaddr_string(netdissect_options *ndo, const uint8_t *ep, const unsigned int type, const unsigned int len) { u_int i; char *cp; struct bsnamemem *tp; if (len == 0) return (""); if (type == LINKADDR_ETHER && len == MAC_ADDR_LEN) return (etheraddr_string(ndo, ep)); if (type == LINKADDR_FRELAY) return (q922_string(ndo, ep, len)); tp = lookup_bytestring(ndo, ep, len); if (tp->bs_name) return (tp->bs_name); tp->bs_name = cp = (char *)malloc(len*3); if (tp->bs_name == NULL) (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: malloc", __func__); cp = octet_to_hex(cp, *ep++); for (i = len-1; i > 0 ; --i) { *cp++ = ':'; cp = octet_to_hex(cp, *ep++); } *cp = '\0'; return (tp->bs_name); } #define ISONSAP_MAX_LENGTH 20 const char * isonsap_string(netdissect_options *ndo, const uint8_t *nsap, u_int nsap_length) { u_int nsap_idx; char *cp; struct enamemem *tp; if (nsap_length < 1 || nsap_length > ISONSAP_MAX_LENGTH) return ("isonsap_string: illegal length"); tp = lookup_nsap(ndo, nsap, nsap_length); if (tp->e_name) return tp->e_name; tp->e_name = cp = (char *)malloc(sizeof("xx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xx")); if (cp == NULL) (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: malloc", __func__); for (nsap_idx = 0; nsap_idx < nsap_length; nsap_idx++) { cp = octet_to_hex(cp, *nsap++); if (((nsap_idx & 1) == 0) && (nsap_idx + 1 < nsap_length)) { *cp++ = '.'; } } *cp = '\0'; return (tp->e_name); } const char * tcpport_string(netdissect_options *ndo, u_short port) { struct hnamemem *tp; uint32_t i = port; char buf[sizeof("00000")]; for (tp = &tporttable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt) if (tp->addr == i) return (tp->name); tp->addr = i; tp->nxt = newhnamemem(ndo); (void)snprintf(buf, sizeof(buf), "%u", i); tp->name = strdup(buf); if (tp->name == NULL) (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: strdup(buf)", __func__); return (tp->name); } const char * udpport_string(netdissect_options *ndo, u_short port) { struct hnamemem *tp; uint32_t i = port; char buf[sizeof("00000")]; for (tp = &uporttable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt) if (tp->addr == i) return (tp->name); tp->addr = i; tp->nxt = newhnamemem(ndo); (void)snprintf(buf, sizeof(buf), "%u", i); tp->name = strdup(buf); if (tp->name == NULL) (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: strdup(buf)", __func__); return (tp->name); } const char * ipxsap_string(netdissect_options *ndo, u_short port) { char *cp; struct hnamemem *tp; uint32_t i = port; char buf[sizeof("0000")]; for (tp = &ipxsaptable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt) if (tp->addr == i) return (tp->name); tp->addr = i; tp->nxt = newhnamemem(ndo); cp = buf; port = ntohs(port); *cp++ = hex[port >> 12 & 0xf]; *cp++ = hex[port >> 8 & 0xf]; *cp++ = hex[port >> 4 & 0xf]; *cp++ = hex[port & 0xf]; *cp++ = '\0'; tp->name = strdup(buf); if (tp->name == NULL) (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: strdup(buf)", __func__); return (tp->name); } static void init_servarray(netdissect_options *ndo) { struct servent *sv; struct hnamemem *table; int i; char buf[sizeof("0000000000")]; while ((sv = getservent()) != NULL) { int port = ntohs(sv->s_port); i = port & (HASHNAMESIZE-1); if (strcmp(sv->s_proto, "tcp") == 0) table = &tporttable[i]; else if (strcmp(sv->s_proto, "udp") == 0) table = &uporttable[i]; else continue; while (table->name) table = table->nxt; if (ndo->ndo_nflag) { (void)snprintf(buf, sizeof(buf), "%d", port); table->name = strdup(buf); } else table->name = strdup(sv->s_name); if (table->name == NULL) (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: strdup", __func__); table->addr = port; table->nxt = newhnamemem(ndo); } endservent(); } static const struct eproto { const char *s; u_short p; } eproto_db[] = { { "aarp", ETHERTYPE_AARP }, { "arp", ETHERTYPE_ARP }, { "atalk", ETHERTYPE_ATALK }, { "decnet", ETHERTYPE_DN }, { "ip", ETHERTYPE_IP }, { "ip6", ETHERTYPE_IPV6 }, { "lat", ETHERTYPE_LAT }, { "loopback", ETHERTYPE_LOOPBACK }, { "mopdl", ETHERTYPE_MOPDL }, { "moprc", ETHERTYPE_MOPRC }, { "rarp", ETHERTYPE_REVARP }, { "sca", ETHERTYPE_SCA }, { (char *)0, 0 } }; static void init_eprotoarray(netdissect_options *ndo) { int i; struct hnamemem *table; for (i = 0; eproto_db[i].s; i++) { int j = htons(eproto_db[i].p) & (HASHNAMESIZE-1); table = &eprototable[j]; while (table->name) table = table->nxt; table->name = eproto_db[i].s; table->addr = htons(eproto_db[i].p); table->nxt = newhnamemem(ndo); } } static const struct protoidlist { const u_char protoid[5]; const char *name; } protoidlist[] = { {{ 0x00, 0x00, 0x0c, 0x01, 0x07 }, "CiscoMLS" }, {{ 0x00, 0x00, 0x0c, 0x20, 0x00 }, "CiscoCDP" }, {{ 0x00, 0x00, 0x0c, 0x20, 0x01 }, "CiscoCGMP" }, {{ 0x00, 0x00, 0x0c, 0x20, 0x03 }, "CiscoVTP" }, {{ 0x00, 0xe0, 0x2b, 0x00, 0xbb }, "ExtremeEDP" }, {{ 0x00, 0x00, 0x00, 0x00, 0x00 }, NULL } }; /* * SNAP proto IDs with org code 0:0:0 are actually encapsulated Ethernet * types. */ static void init_protoidarray(netdissect_options *ndo) { int i; struct protoidmem *tp; const struct protoidlist *pl; u_char protoid[5]; protoid[0] = 0; protoid[1] = 0; protoid[2] = 0; for (i = 0; eproto_db[i].s; i++) { u_short etype = htons(eproto_db[i].p); memcpy((char *)&protoid[3], (char *)&etype, 2); tp = lookup_protoid(ndo, protoid); tp->p_name = strdup(eproto_db[i].s); if (tp->p_name == NULL) (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: strdup(eproto_db[i].s)", __func__); } /* Hardwire some SNAP proto ID names */ for (pl = protoidlist; pl->name != NULL; ++pl) { tp = lookup_protoid(ndo, pl->protoid); /* Don't override existing name */ if (tp->p_name != NULL) continue; tp->p_name = pl->name; } } static const struct etherlist { const nd_mac_addr addr; const char *name; } etherlist[] = { {{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }, "Broadcast" }, {{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, NULL } }; /* * Initialize the ethers hash table. We take two different approaches * depending on whether or not the system provides the ethers name * service. If it does, we just wire in a few names at startup, * and etheraddr_string() fills in the table on demand. If it doesn't, * then we suck in the entire /etc/ethers file at startup. The idea * is that parsing the local file will be fast, but spinning through * all the ethers entries via NIS & next_etherent might be very slow. * * XXX pcap_next_etherent doesn't belong in the pcap interface, but * since the pcap module already does name-to-address translation, * it's already does most of the work for the ethernet address-to-name * translation, so we just pcap_next_etherent as a convenience. */ static void init_etherarray(netdissect_options *ndo) { const struct etherlist *el; struct enamemem *tp; #ifdef USE_ETHER_NTOHOST char name[256]; #else struct pcap_etherent *ep; FILE *fp; /* Suck in entire ethers file */ fp = fopen(PCAP_ETHERS_FILE, "r"); if (fp != NULL) { while ((ep = pcap_next_etherent(fp)) != NULL) { tp = lookup_emem(ndo, ep->addr); tp->e_name = strdup(ep->name); if (tp->e_name == NULL) (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: strdup(ep->addr)", __func__); } (void)fclose(fp); } #endif /* Hardwire some ethernet names */ for (el = etherlist; el->name != NULL; ++el) { tp = lookup_emem(ndo, el->addr); /* Don't override existing name */ if (tp->e_name != NULL) continue; #ifdef USE_ETHER_NTOHOST /* * Use YP/NIS version of name if available. */ /* Same workaround as in etheraddr_string(). */ struct ether_addr ea; memcpy (&ea, el->addr, MAC_ADDR_LEN); if (ether_ntohost(name, &ea) == 0) { tp->e_name = strdup(name); if (tp->e_name == NULL) (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: strdup(name)", __func__); continue; } #endif tp->e_name = el->name; } } static const struct ipxsap_ent { uint16_t v; const char *s; } ipxsap_db[] = { { 0x0000, "Unknown" }, { 0x0001, "User" }, { 0x0002, "User Group" }, { 0x0003, "PrintQueue" }, { 0x0004, "FileServer" }, { 0x0005, "JobServer" }, { 0x0006, "Gateway" }, { 0x0007, "PrintServer" }, { 0x0008, "ArchiveQueue" }, { 0x0009, "ArchiveServer" }, { 0x000a, "JobQueue" }, { 0x000b, "Administration" }, { 0x000F, "Novell TI-RPC" }, { 0x0017, "Diagnostics" }, { 0x0020, "NetBIOS" }, { 0x0021, "NAS SNA Gateway" }, { 0x0023, "NACS AsyncGateway" }, { 0x0024, "RemoteBridge/RoutingService" }, { 0x0026, "BridgeServer" }, { 0x0027, "TCP/IP Gateway" }, { 0x0028, "Point-to-point X.25 BridgeServer" }, { 0x0029, "3270 Gateway" }, { 0x002a, "CHI Corp" }, { 0x002c, "PC Chalkboard" }, { 0x002d, "TimeSynchServer" }, { 0x002e, "ARCserve5.0/PalindromeBackup" }, { 0x0045, "DI3270 Gateway" }, { 0x0047, "AdvertisingPrintServer" }, { 0x004a, "NetBlazerModems" }, { 0x004b, "BtrieveVAP" }, { 0x004c, "NetwareSQL" }, { 0x004d, "XtreeNetwork" }, { 0x0050, "BtrieveVAP4.11" }, { 0x0052, "QuickLink" }, { 0x0053, "PrintQueueUser" }, { 0x0058, "Multipoint X.25 Router" }, { 0x0060, "STLB/NLM" }, { 0x0064, "ARCserve" }, { 0x0066, "ARCserve3.0" }, { 0x0072, "WAN CopyUtility" }, { 0x007a, "TES-NetwareVMS" }, { 0x0092, "WATCOM Debugger/EmeraldTapeBackupServer" }, { 0x0095, "DDA OBGYN" }, { 0x0098, "NetwareAccessServer" }, { 0x009a, "Netware for VMS II/NamedPipeServer" }, { 0x009b, "NetwareAccessServer" }, { 0x009e, "PortableNetwareServer/SunLinkNVT" }, { 0x00a1, "PowerchuteAPC UPS" }, { 0x00aa, "LAWserve" }, { 0x00ac, "CompaqIDA StatusMonitor" }, { 0x0100, "PIPE STAIL" }, { 0x0102, "LAN ProtectBindery" }, { 0x0103, "OracleDataBaseServer" }, { 0x0107, "Netware386/RSPX RemoteConsole" }, { 0x010f, "NovellSNA Gateway" }, { 0x0111, "TestServer" }, { 0x0112, "HP PrintServer" }, { 0x0114, "CSA MUX" }, { 0x0115, "CSA LCA" }, { 0x0116, "CSA CM" }, { 0x0117, "CSA SMA" }, { 0x0118, "CSA DBA" }, { 0x0119, "CSA NMA" }, { 0x011a, "CSA SSA" }, { 0x011b, "CSA STATUS" }, { 0x011e, "CSA APPC" }, { 0x0126, "SNA TEST SSA Profile" }, { 0x012a, "CSA TRACE" }, { 0x012b, "NetwareSAA" }, { 0x012e, "IKARUS VirusScan" }, { 0x0130, "CommunicationsExecutive" }, { 0x0133, "NNS DomainServer/NetwareNamingServicesDomain" }, { 0x0135, "NetwareNamingServicesProfile" }, { 0x0137, "Netware386 PrintQueue/NNS PrintQueue" }, { 0x0141, "LAN SpoolServer" }, { 0x0152, "IRMALAN Gateway" }, { 0x0154, "NamedPipeServer" }, { 0x0166, "NetWareManagement" }, { 0x0168, "Intel PICKIT CommServer/Intel CAS TalkServer" }, { 0x0173, "Compaq" }, { 0x0174, "Compaq SNMP Agent" }, { 0x0175, "Compaq" }, { 0x0180, "XTreeServer/XTreeTools" }, { 0x018A, "NASI ServicesBroadcastServer" }, { 0x01b0, "GARP Gateway" }, { 0x01b1, "Binfview" }, { 0x01bf, "IntelLanDeskManager" }, { 0x01ca, "AXTEC" }, { 0x01cb, "ShivaNetModem/E" }, { 0x01cc, "ShivaLanRover/E" }, { 0x01cd, "ShivaLanRover/T" }, { 0x01ce, "ShivaUniversal" }, { 0x01d8, "CastelleFAXPressServer" }, { 0x01da, "CastelleLANPressPrintServer" }, { 0x01dc, "CastelleFAX/Xerox7033 FaxServer/ExcelLanFax" }, { 0x01f0, "LEGATO" }, { 0x01f5, "LEGATO" }, { 0x0233, "NMS Agent/NetwareManagementAgent" }, { 0x0237, "NMS IPX Discovery/LANternReadWriteChannel" }, { 0x0238, "NMS IP Discovery/LANternTrapAlarmChannel" }, { 0x023a, "LANtern" }, { 0x023c, "MAVERICK" }, { 0x023f, "NovellSMDR" }, { 0x024e, "NetwareConnect" }, { 0x024f, "NASI ServerBroadcast Cisco" }, { 0x026a, "NMS ServiceConsole" }, { 0x026b, "TimeSynchronizationServer Netware 4.x" }, { 0x0278, "DirectoryServer Netware 4.x" }, { 0x027b, "NetwareManagementAgent" }, { 0x0280, "Novell File and Printer Sharing Service for PC" }, { 0x0304, "NovellSAA Gateway" }, { 0x0308, "COM/VERMED" }, { 0x030a, "GalacticommWorldgroupServer" }, { 0x030c, "IntelNetport2/HP JetDirect/HP Quicksilver" }, { 0x0320, "AttachmateGateway" }, { 0x0327, "MicrosoftDiagnostics" }, { 0x0328, "WATCOM SQL Server" }, { 0x0335, "MultiTechSystems MultisynchCommServer" }, { 0x0343, "Xylogics RemoteAccessServer/LANModem" }, { 0x0355, "ArcadaBackupExec" }, { 0x0358, "MSLCD1" }, { 0x0361, "NETINELO" }, { 0x037e, "Powerchute UPS Monitoring" }, { 0x037f, "ViruSafeNotify" }, { 0x0386, "HP Bridge" }, { 0x0387, "HP Hub" }, { 0x0394, "NetWare SAA Gateway" }, { 0x039b, "LotusNotes" }, { 0x03b7, "CertusAntiVirus" }, { 0x03c4, "ARCserve4.0" }, { 0x03c7, "LANspool3.5" }, { 0x03d7, "LexmarkPrinterServer" }, { 0x03d8, "LexmarkXLE PrinterServer" }, { 0x03dd, "BanyanENS NetwareClient" }, { 0x03de, "GuptaSequelBaseServer/NetWareSQL" }, { 0x03e1, "UnivelUnixware" }, { 0x03e4, "UnivelUnixware" }, { 0x03fc, "IntelNetport" }, { 0x03fd, "PrintServerQueue" }, { 0x040A, "ipnServer" }, { 0x040D, "LVERRMAN" }, { 0x040E, "LVLIC" }, { 0x0414, "NET Silicon (DPI)/Kyocera" }, { 0x0429, "SiteLockVirus" }, { 0x0432, "UFHELPR???" }, { 0x0433, "Synoptics281xAdvancedSNMPAgent" }, { 0x0444, "MicrosoftNT SNA Server" }, { 0x0448, "Oracle" }, { 0x044c, "ARCserve5.01" }, { 0x0457, "CanonGP55" }, { 0x045a, "QMS Printers" }, { 0x045b, "DellSCSI Array" }, { 0x0491, "NetBlazerModems" }, { 0x04ac, "OnTimeScheduler" }, { 0x04b0, "CD-Net" }, { 0x0513, "EmulexNQA" }, { 0x0520, "SiteLockChecks" }, { 0x0529, "SiteLockChecks" }, { 0x052d, "CitrixOS2 AppServer" }, { 0x0535, "Tektronix" }, { 0x0536, "Milan" }, { 0x055d, "Attachmate SNA gateway" }, { 0x056b, "IBM8235 ModemServer" }, { 0x056c, "ShivaLanRover/E PLUS" }, { 0x056d, "ShivaLanRover/T PLUS" }, { 0x0580, "McAfeeNetShield" }, { 0x05B8, "NLM to workstation communication (Revelation Software)" }, { 0x05BA, "CompatibleSystemsRouters" }, { 0x05BE, "CheyenneHierarchicalStorageManager" }, { 0x0606, "JCWatermarkImaging" }, { 0x060c, "AXISNetworkPrinter" }, { 0x0610, "AdaptecSCSIManagement" }, { 0x0621, "IBM AntiVirus" }, { 0x0640, "Windows95 RemoteRegistryService" }, { 0x064e, "MicrosoftIIS" }, { 0x067b, "Microsoft Win95/98 File and Print Sharing for NetWare" }, { 0x067c, "Microsoft Win95/98 File and Print Sharing for NetWare" }, { 0x076C, "Xerox" }, { 0x079b, "ShivaLanRover/E 115" }, { 0x079c, "ShivaLanRover/T 115" }, { 0x07B4, "CubixWorldDesk" }, { 0x07c2, "Quarterdeck IWare Connect V2.x NLM" }, { 0x07c1, "Quarterdeck IWare Connect V3.x NLM" }, { 0x0810, "ELAN License Server Demo" }, { 0x0824, "ShivaLanRoverAccessSwitch/E" }, { 0x086a, "ISSC Collector" }, { 0x087f, "ISSC DAS AgentAIX" }, { 0x0880, "Intel Netport PRO" }, { 0x0881, "Intel Netport PRO" }, { 0x0b29, "SiteLock" }, { 0x0c29, "SiteLockApplications" }, { 0x0c2c, "LicensingServer" }, { 0x2101, "PerformanceTechnologyInstantInternet" }, { 0x2380, "LAI SiteLock" }, { 0x238c, "MeetingMaker" }, { 0x4808, "SiteLockServer/SiteLockMetering" }, { 0x5555, "SiteLockUser" }, { 0x6312, "Tapeware" }, { 0x6f00, "RabbitGateway" }, { 0x7703, "MODEM" }, { 0x8002, "NetPortPrinters" }, { 0x8008, "WordPerfectNetworkVersion" }, { 0x85BE, "Cisco EIGRP" }, { 0x8888, "WordPerfectNetworkVersion/QuickNetworkManagement" }, { 0x9000, "McAfeeNetShield" }, { 0x9604, "CSA-NT_MON" }, { 0xb6a8, "OceanIsleReachoutRemoteControl" }, { 0xf11f, "SiteLockMetering" }, { 0xf1ff, "SiteLock" }, { 0xf503, "Microsoft SQL Server" }, { 0xF905, "IBM TimeAndPlace" }, { 0xfbfb, "TopCallIII FaxServer" }, { 0xffff, "AnyService/Wildcard" }, { 0, (char *)0 } }; static void init_ipxsaparray(netdissect_options *ndo) { int i; struct hnamemem *table; for (i = 0; ipxsap_db[i].s != NULL; i++) { u_int j = htons(ipxsap_db[i].v) & (HASHNAMESIZE-1); table = &ipxsaptable[j]; while (table->name) table = table->nxt; table->name = ipxsap_db[i].s; table->addr = htons(ipxsap_db[i].v); table->nxt = newhnamemem(ndo); } } /* * Initialize the address to name translation machinery. We map all * non-local IP addresses to numeric addresses if ndo->ndo_fflag is true * (i.e., to prevent blocking on the nameserver). localnet is the IP address * of the local network. mask is its subnet mask. */ void init_addrtoname(netdissect_options *ndo, uint32_t localnet, uint32_t mask) { if (ndo->ndo_fflag) { f_localnet = localnet; f_netmask = mask; } if (ndo->ndo_nflag) /* * Simplest way to suppress names. */ return; init_etherarray(ndo); init_servarray(ndo); init_eprotoarray(ndo); init_protoidarray(ndo); init_ipxsaparray(ndo); } const char * dnaddr_string(netdissect_options *ndo, u_short dnaddr) { struct hnamemem *tp; for (tp = &dnaddrtable[dnaddr & (HASHNAMESIZE-1)]; tp->nxt != NULL; tp = tp->nxt) if (tp->addr == dnaddr) return (tp->name); tp->addr = dnaddr; tp->nxt = newhnamemem(ndo); tp->name = dnnum_string(ndo, dnaddr); return(tp->name); } /* Return a zero'ed hnamemem struct and cuts down on calloc() overhead */ struct hnamemem * newhnamemem(netdissect_options *ndo) { struct hnamemem *p; static struct hnamemem *ptr = NULL; static u_int num = 0; if (num == 0) { num = 64; ptr = (struct hnamemem *)calloc(num, sizeof (*ptr)); if (ptr == NULL) (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: calloc", __func__); } --num; p = ptr++; return (p); } /* Return a zero'ed h6namemem struct and cuts down on calloc() overhead */ struct h6namemem * newh6namemem(netdissect_options *ndo) { struct h6namemem *p; static struct h6namemem *ptr = NULL; static u_int num = 0; if (num == 0) { num = 64; ptr = (struct h6namemem *)calloc(num, sizeof (*ptr)); if (ptr == NULL) (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: calloc", __func__); } --num; p = ptr++; return (p); } /* Represent TCI part of the 802.1Q 4-octet tag as text. */ const char * ieee8021q_tci_string(const uint16_t tci) { static char buf[128]; snprintf(buf, sizeof(buf), "vlan %u, p %u%s", tci & 0xfff, tci >> 13, (tci & 0x1000) ? ", DEI" : ""); return buf; }