X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/b1c5a4cd7d22087207a9fa2210d2a1758dc6977d..cc2d4cbd8ca150504127f375d8b51b194958d95b:/addrtoname.c diff --git a/addrtoname.c b/addrtoname.c index 745ffe30..1c80c39f 100644 --- a/addrtoname.c +++ b/addrtoname.c @@ -21,67 +21,117 @@ * Internet, ethernet, port, and protocol string to address * and address to string conversion routines */ -#ifndef lint -static const char rcsid[] _U_ = - "@(#) $Header: /tcpdump/master/tcpdump/addrtoname.c,v 1.119 2007-08-08 14:06:34 hannes Exp $ (LBL)"; -#endif #ifdef HAVE_CONFIG_H -#include "config.h" +#include #endif -#include +#ifdef HAVE_CASPER +#include +#include +#endif /* HAVE_CASPER */ -#ifdef USE_ETHER_NTOHOST -#ifdef HAVE_NETINET_IF_ETHER_H -struct mbuf; /* Squelch compiler warnings on some platforms for */ -struct rtentry; /* declarations in */ -#include /* for "struct ifnet" in "struct arpcom" on Solaris */ -#include -#endif /* HAVE_NETINET_IF_ETHER_H */ -#ifdef NETINET_ETHER_H_DECLARES_ETHER_NTOHOST -#include -#endif /* NETINET_ETHER_H_DECLARES_ETHER_NTOHOST */ - -#if !defined(HAVE_DECL_ETHER_NTOHOST) || !HAVE_DECL_ETHER_NTOHOST -#ifndef HAVE_STRUCT_ETHER_ADDR -struct ether_addr { - unsigned char ether_addr_octet[6]; -}; -#endif -extern int ether_ntohost(char *, const struct ether_addr *); +#include "netdissect-stdinc.h" + +#ifndef NTOHL +#define NTOHL(x) (x) = ntohl(x) +#define NTOHS(x) (x) = ntohs(x) +#define HTONL(x) (x) = htonl(x) +#define HTONS(x) (x) = htons(x) #endif -#endif /* USE_ETHER_NTOHOST */ +#ifdef _WIN32 + /* + * We have our own ether_ntohost(), reading from the system's + * Ethernet address file. + */ + #include "missing/win_ether_ntohost.h" +#else + #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 { + unsigned char ether_addr_octet[6]; + }; + #endif /* HAVE_STRUCT_ETHER_ADDR */ + #endif /* what declares ether_ntohost() */ + + #ifdef NEED_NETINET_IF_ETHER_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 */ +#endif /* _WIN32 */ #include #include +#ifndef HAVE_GETSERVENT +#include +#endif #include #include #include #include -#include "interface.h" +#include "netdissect.h" #include "addrtoname.h" +#include "addrtostr.h" +#include "ethertype.h" #include "llc.h" -#include "setsignal.h" #include "extract.h" #include "oui.h" -#ifndef ETHER_ADDR_LEN -#define ETHER_ADDR_LEN 6 -#endif - /* * hash tables for whatever-to-name translations * - * XXX there has to be error checks against strdup(3) failure + * ndo_error() called on strdup(3) failure with S_ERR_ND_MEM_ALLOC status */ #define HASHNAMESIZE 4096 struct hnamemem { - u_int32_t addr; + uint32_t addr; const char *name; struct hnamemem *nxt; }; @@ -93,7 +143,7 @@ static struct hnamemem eprototable[HASHNAMESIZE]; static struct hnamemem dnaddrtable[HASHNAMESIZE]; static struct hnamemem ipxsaptable[HASHNAMESIZE]; -#if defined(INET6) && defined(WIN32) +#ifdef _WIN32 /* * fake gethostbyaddr for Win2k/XP * gethostbyaddr() returns incorrect value when AF_INET6 is passed @@ -122,7 +172,7 @@ win32_gethostbyaddr(const char *addr, int len, int type) hname, sizeof(hname), NULL, 0, 0)) { return NULL; } else { - strcpy(host.h_name, hname); + strlcpy(host.h_name, hname, NI_MAXHOST); return &host; } break; @@ -131,9 +181,8 @@ win32_gethostbyaddr(const char *addr, int len, int type) } } #define gethostbyaddr win32_gethostbyaddr -#endif /* INET6 & WIN32 */ +#endif /* _WIN32 */ -#ifdef INET6 struct h6namemem { struct in6_addr addr; char *name; @@ -141,7 +190,6 @@ struct h6namemem { }; static struct h6namemem h6nametable[HASHNAMESIZE]; -#endif /* INET6 */ struct enamemem { u_short e_addr0; @@ -149,16 +197,26 @@ struct enamemem { u_short e_addr2; const char *e_name; u_char *e_nsap; /* used only for nsaptable[] */ -#define e_bs e_nsap /* for bytestringtable */ struct enamemem *e_nxt; }; static struct enamemem enametable[HASHNAMESIZE]; static struct enamemem nsaptable[HASHNAMESIZE]; -static struct enamemem bytestringtable[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 { - u_int32_t p_oui; + uint32_t p_oui; u_short p_proto; const char *p_name; struct protoidmem *p_nxt; @@ -170,11 +228,11 @@ static struct protoidmem protoidtable[HASHNAMESIZE]; * A faster replacement for inet_ntoa(). */ const char * -intoa(u_int32_t addr) +intoa(uint32_t addr) { - register char *cp; - register u_int byte; - register int n; + char *cp; + u_int byte; + int n; static char buf[sizeof(".xxx.xxx.xxx.xxx")]; NTOHL(addr); @@ -184,13 +242,13 @@ intoa(u_int32_t addr) n = 4; do { byte = addr & 0xff; - *--cp = byte % 10 + '0'; + *--cp = (char)(byte % 10) + '0'; byte /= 10; if (byte > 0) { - *--cp = byte % 10 + '0'; + *--cp = (char)(byte % 10) + '0'; byte /= 10; if (byte > 0) - *--cp = byte + '0'; + *--cp = (char)byte + '0'; } *--cp = '.'; addr >>= 8; @@ -199,8 +257,11 @@ intoa(u_int32_t addr) return cp + 1; } -static u_int32_t f_netmask; -static u_int32_t f_localnet; +static uint32_t f_netmask; +static uint32_t f_localnet; +#ifdef HAVE_CASPER +extern cap_channel_t *capdns; +#endif /* * Return a name for the IP address pointed to by ap. This address @@ -208,7 +269,7 @@ static u_int32_t f_localnet; * * NOTE: ap is *NOT* necessarily part of the packet data (not even if * this is being called with the "ipaddr_string()" macro), so you - * *CANNOT* use the TCHECK{2}/TTEST{2} macros on it. Furthermore, + * *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 @@ -222,11 +283,11 @@ static u_int32_t f_localnet; * also needs to check whether they're present in the packet buffer. */ const char * -getname(const u_char *ap) +ipaddr_string(netdissect_options *ndo, const u_char *ap) { - register struct hostent *hp; - u_int32_t addr; - static struct hnamemem *p; /* static for longjmp() */ + struct hostent *hp; + uint32_t addr; + struct hnamemem *p; memcpy(&addr, ap, sizeof(addr)); p = &hnametable[addr & (HASHNAMESIZE-1)]; @@ -235,7 +296,7 @@ getname(const u_char *ap) return (p->name); } p->addr = addr; - p->nxt = newhnamemem(); + p->nxt = newhnamemem(ndo); /* * Print names unless: @@ -244,14 +305,23 @@ getname(const u_char *ap) * given, f_netmask and f_localnet are 0 and the test * evaluates to true) */ - if (!nflag && + if (!ndo->ndo_nflag && (addr & f_netmask) == f_localnet) { - hp = gethostbyaddr((char *)&addr, 4, AF_INET); +#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 (Nflag) { + if (p->name == NULL) + (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, + "ipaddr_string: strdup(hp->h_name)"); + if (ndo->ndo_Nflag) { /* Remove domain qualifications */ dotp = strchr(p->name, '.'); if (dotp) @@ -261,27 +331,29 @@ getname(const u_char *ap) } } p->name = strdup(intoa(addr)); + if (p->name == NULL) + (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, + "ipaddr_string: strdup(intoa(addr))"); return (p->name); } -#ifdef INET6 /* * Return a name for the IP6 address pointed to by ap. This address * is assumed to be in network byte order. */ const char * -getname6(const u_char *ap) +ip6addr_string(netdissect_options *ndo, const u_char *ap) { - register struct hostent *hp; + struct hostent *hp; union { struct in6_addr addr; struct for_hash_addr { char fill[14]; - u_int16_t d; + uint16_t d; } addra; } addr; - static struct h6namemem *p; /* static for longjmp() */ - register const char *cp; + struct h6namemem *p; + const char *cp; char ntop_buf[INET6_ADDRSTRLEN]; memcpy(&addr, ap, sizeof(addr)); @@ -291,18 +363,28 @@ getname6(const u_char *ap) return (p->name); } p->addr = addr.addr; - p->nxt = newh6namemem(); + p->nxt = newh6namemem(ndo); /* * Do not print names if -n was given. */ - if (!nflag) { - hp = gethostbyaddr((char *)&addr, sizeof(addr), AF_INET6); + 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 (Nflag) { + if (p->name == NULL) + (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, + "ip6addr_string: strdup(hp->h_name)"); + if (ndo->ndo_Nflag) { /* Remove domain qualifications */ dotp = strchr(p->name, '.'); if (dotp) @@ -311,21 +393,25 @@ getname6(const u_char *ap) return (p->name); } } - cp = inet_ntop(AF_INET6, &addr, ntop_buf, sizeof(ntop_buf)); + 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, + "ip6addr_string: strdup(cp)"); return (p->name); } -#endif /* INET6 */ - -static const char hex[] = "0123456789abcdef"; +static const char hex[16] = { + '0', '1', '2', '3', '4', '5', '6', '7', + '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' +}; /* Find the hash node that corresponds the ether address 'ep' */ -static inline struct enamemem * -lookup_emem(const u_char *ep) +static struct enamemem * +lookup_emem(netdissect_options *ndo, const u_char *ep) { - register u_int i, j, k; + u_int i, j, k; struct enamemem *tp; k = (ep[0] << 8) | ep[1]; @@ -340,12 +426,12 @@ lookup_emem(const u_char *ep) return tp; else tp = tp->e_nxt; - tp->e_addr0 = i; - tp->e_addr1 = j; - tp->e_addr2 = k; + 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) - error("lookup_emem: calloc"); + (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "lookup_emem: calloc"); return tp; } @@ -355,11 +441,12 @@ lookup_emem(const u_char *ep) * with length 'nlen' */ -static inline struct enamemem * -lookup_bytestring(register const u_char *bs, const unsigned int nlen) +static struct bsnamemem * +lookup_bytestring(netdissect_options *ndo, const u_char *bs, + const unsigned int nlen) { - struct enamemem *tp; - register u_int i, j, k; + struct bsnamemem *tp; + u_int i, j, k; if (nlen >= 6) { k = (bs[0] << 8) | bs[1]; @@ -373,42 +460,47 @@ lookup_bytestring(register const u_char *bs, const unsigned int nlen) i = j = k = 0; tp = &bytestringtable[(i ^ j) & (HASHNAMESIZE-1)]; - while (tp->e_nxt) - if (tp->e_addr0 == i && - tp->e_addr1 == j && - tp->e_addr2 == k && - memcmp((const char *)bs, (const char *)(tp->e_bs), nlen) == 0) + 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->e_nxt; + tp = tp->bs_nxt; - tp->e_addr0 = i; - tp->e_addr1 = j; - tp->e_addr2 = k; + tp->bs_addr0 = (u_short)i; + tp->bs_addr1 = (u_short)j; + tp->bs_addr2 = (u_short)k; - tp->e_bs = (u_char *) calloc(1, nlen + 1); - if (tp->e_bs == NULL) - error("lookup_bytestring: calloc"); + tp->bs_bytes = (u_char *) calloc(1, nlen); + if (tp->bs_bytes == NULL) + (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, + "lookup_bytestring: calloc"); - memcpy(tp->e_bs, bs, nlen); - tp->e_nxt = (struct enamemem *)calloc(1, sizeof(*tp)); - if (tp->e_nxt == NULL) - error("lookup_bytestring: calloc"); + 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, + "lookup_bytestring: calloc"); return tp; } /* Find the hash node that corresponds the NSAP 'nsap' */ -static inline struct enamemem * -lookup_nsap(register const u_char *nsap) +static struct enamemem * +lookup_nsap(netdissect_options *ndo, const u_char *nsap, + u_int nsap_length) { - register u_int i, j, k; - unsigned int nlen = *nsap; + u_int i, j, k; struct enamemem *tp; - const u_char *ensap = nsap + nlen - 6; + const u_char *ensap; - if (nlen > 6) { + 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]; @@ -418,35 +510,36 @@ lookup_nsap(register const u_char *nsap) tp = &nsaptable[(i ^ j) & (HASHNAMESIZE-1)]; while (tp->e_nxt) - if (tp->e_addr0 == i && + if (nsap_length == tp->e_nsap[0] && + tp->e_addr0 == i && tp->e_addr1 == j && tp->e_addr2 == k && - tp->e_nsap[0] == nlen && - memcmp((const char *)&(nsap[1]), - (char *)&(tp->e_nsap[1]), nlen) == 0) + memcmp((const char *)nsap, + (char *)&(tp->e_nsap[1]), nsap_length) == 0) return tp; else tp = tp->e_nxt; - tp->e_addr0 = i; - tp->e_addr1 = j; - tp->e_addr2 = k; - tp->e_nsap = (u_char *)malloc(nlen + 1); + 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) - error("lookup_nsap: malloc"); - memcpy((char *)tp->e_nsap, (const char *)nsap, nlen + 1); + (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "lookup_nsap: malloc"); + 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) - error("lookup_nsap: calloc"); + (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "lookup_nsap: calloc"); return tp; } /* Find the hash node that corresponds the protoid 'pi'. */ -static inline struct protoidmem * -lookup_protoid(const u_char *pi) +static struct protoidmem * +lookup_protoid(netdissect_options *ndo, const u_char *pi) { - register u_int i, j; + u_int i, j; struct protoidmem *tp; /* 5 octets won't be aligned */ @@ -461,44 +554,41 @@ lookup_protoid(const u_char *pi) else tp = tp->p_nxt; tp->p_oui = i; - tp->p_proto = j; + tp->p_proto = (u_short)j; tp->p_nxt = (struct protoidmem *)calloc(1, sizeof(*tp)); if (tp->p_nxt == NULL) - error("lookup_protoid: calloc"); + (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "lookup_protoid: calloc"); return tp; } const char * -etheraddr_string(register const u_char *ep) +etheraddr_string(netdissect_options *ndo, const uint8_t *ep) { - register int i; - register char *cp; - register struct enamemem *tp; + int i; + char *cp; + struct enamemem *tp; int oui; char buf[BUFSIZE]; - tp = lookup_emem(ep); + tp = lookup_emem(ndo, ep); if (tp->e_name) return (tp->e_name); #ifdef USE_ETHER_NTOHOST - if (!nflag) { + if (!ndo->ndo_nflag) { char buf2[BUFSIZE]; - /* - * We don't cast it to "const struct ether_addr *" - * because some systems fail to declare the second - * argument as a "const" pointer, even though they - * don't modify what it points to. - */ - if (ether_ntohost(buf2, (struct ether_addr *)ep) == 0) { + if (ether_ntohost(buf2, (const struct ether_addr *)ep) == 0) { tp->e_name = strdup(buf2); + if (tp->e_name == NULL) + (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, + "etheraddr_string: strdup(buf2)"); return (tp->e_name); } } #endif cp = buf; - oui = EXTRACT_24BITS(ep); + oui = EXTRACT_BE_U_3(ep); *cp++ = hex[*ep >> 4 ]; *cp++ = hex[*ep++ & 0xf]; for (i = 5; --i >= 0;) { @@ -507,27 +597,30 @@ etheraddr_string(register const u_char *ep) *cp++ = hex[*ep++ & 0xf]; } - if (!nflag) { - snprintf(cp, BUFSIZE - (2 + 5*3), " (oui %s)", + if (!ndo->ndo_nflag) { + nd_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, + "etheraddr_string: strdup(buf)"); return (tp->e_name); } const char * -le64addr_string(const u_char *ep) +le64addr_string(netdissect_options *ndo, const uint8_t *ep) { const unsigned int len = 8; - register u_int i; - register char *cp; - register struct enamemem *tp; + u_int i; + char *cp; + struct bsnamemem *tp; char buf[BUFSIZE]; - tp = lookup_bytestring(ep, len); - if (tp->e_name) - return (tp->e_name); + tp = lookup_bytestring(ndo, ep, len); + if (tp->bs_name) + return (tp->bs_name); cp = buf; for (i = len; i > 0 ; --i) { @@ -539,34 +632,39 @@ le64addr_string(const u_char *ep) *cp = '\0'; - tp->e_name = strdup(buf); + tp->bs_name = strdup(buf); + if (tp->bs_name == NULL) + (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, + "le64addr_string: strdup(buf)"); - return (tp->e_name); + return (tp->bs_name); } const char * -linkaddr_string(const u_char *ep, const unsigned int type, const unsigned int len) +linkaddr_string(netdissect_options *ndo, const uint8_t *ep, + const unsigned int type, const unsigned int len) { - register u_int i; - register char *cp; - register struct enamemem *tp; + u_int i; + char *cp; + struct bsnamemem *tp; if (len == 0) return (""); - if (type == LINKADDR_ETHER && len == ETHER_ADDR_LEN) - return (etheraddr_string(ep)); + if (type == LINKADDR_ETHER && len == MAC_ADDR_LEN) + return (etheraddr_string(ndo, ep)); if (type == LINKADDR_FRELAY) - return (q922_string(ep)); + return (q922_string(ndo, ep, len)); - tp = lookup_bytestring(ep, len); - if (tp->e_name) - return (tp->e_name); + tp = lookup_bytestring(ndo, ep, len); + if (tp->bs_name) + return (tp->bs_name); - tp->e_name = cp = (char *)malloc(len*3); - if (tp->e_name == NULL) - error("linkaddr_string: malloc"); + tp->bs_name = cp = (char *)malloc(len*3); + if (tp->bs_name == NULL) + (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, + "linkaddr_string: malloc"); *cp++ = hex[*ep >> 4]; *cp++ = hex[*ep++ & 0xf]; for (i = len-1; i > 0 ; --i) { @@ -575,87 +673,36 @@ linkaddr_string(const u_char *ep, const unsigned int type, const unsigned int le *cp++ = hex[*ep++ & 0xf]; } *cp = '\0'; - return (tp->e_name); -} - -const char * -etherproto_string(u_short port) -{ - register char *cp; - register struct hnamemem *tp; - register u_int32_t i = port; - char buf[sizeof("0000")]; - - for (tp = &eprototable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt) - if (tp->addr == i) - return (tp->name); - - tp->addr = i; - tp->nxt = newhnamemem(); - - cp = buf; - 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); - return (tp->name); -} - -const char * -protoid_string(register const u_char *pi) -{ - register u_int i, j; - register char *cp; - register struct protoidmem *tp; - char buf[sizeof("00:00:00:00:00")]; - - tp = lookup_protoid(pi); - if (tp->p_name) - return tp->p_name; - - cp = buf; - if ((j = *pi >> 4) != 0) - *cp++ = hex[j]; - *cp++ = hex[*pi++ & 0xf]; - for (i = 4; (int)--i >= 0;) { - *cp++ = ':'; - if ((j = *pi >> 4) != 0) - *cp++ = hex[j]; - *cp++ = hex[*pi++ & 0xf]; - } - *cp = '\0'; - tp->p_name = strdup(buf); - return (tp->p_name); + return (tp->bs_name); } #define ISONSAP_MAX_LENGTH 20 const char * -isonsap_string(const u_char *nsap, register u_int nsap_length) +isonsap_string(netdissect_options *ndo, const uint8_t *nsap, + u_int nsap_length) { - register u_int nsap_idx; - register char *cp; - register struct enamemem *tp; + 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(nsap); + 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) - error("isonsap_string: malloc"); + (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, + "isonsap_string: malloc"); for (nsap_idx = 0; nsap_idx < nsap_length; nsap_idx++) { *cp++ = hex[*nsap >> 4]; *cp++ = hex[*nsap++ & 0xf]; if (((nsap_idx & 1) == 0) && (nsap_idx + 1 < nsap_length)) { - *cp++ = '.'; + *cp++ = '.'; } } *cp = '\0'; @@ -663,10 +710,10 @@ isonsap_string(const u_char *nsap, register u_int nsap_length) } const char * -tcpport_string(u_short port) +tcpport_string(netdissect_options *ndo, u_short port) { - register struct hnamemem *tp; - register u_int32_t i = port; + struct hnamemem *tp; + uint32_t i = port; char buf[sizeof("00000")]; for (tp = &tporttable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt) @@ -674,18 +721,21 @@ tcpport_string(u_short port) return (tp->name); tp->addr = i; - tp->nxt = newhnamemem(); + tp->nxt = newhnamemem(ndo); - (void)snprintf(buf, sizeof(buf), "%u", i); + (void)nd_snprintf(buf, sizeof(buf), "%u", i); tp->name = strdup(buf); + if (tp->name == NULL) + (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, + "tcpport_string: strdup(buf)"); return (tp->name); } const char * -udpport_string(register u_short port) +udpport_string(netdissect_options *ndo, u_short port) { - register struct hnamemem *tp; - register u_int32_t i = port; + struct hnamemem *tp; + uint32_t i = port; char buf[sizeof("00000")]; for (tp = &uporttable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt) @@ -693,19 +743,22 @@ udpport_string(register u_short port) return (tp->name); tp->addr = i; - tp->nxt = newhnamemem(); + tp->nxt = newhnamemem(ndo); - (void)snprintf(buf, sizeof(buf), "%u", i); + (void)nd_snprintf(buf, sizeof(buf), "%u", i); tp->name = strdup(buf); + if (tp->name == NULL) + (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, + "udpport_string: strdup(buf)"); return (tp->name); } const char * -ipxsap_string(u_short port) +ipxsap_string(netdissect_options *ndo, u_short port) { - register char *cp; - register struct hnamemem *tp; - register u_int32_t i = 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) @@ -713,7 +766,7 @@ ipxsap_string(u_short port) return (tp->name); tp->addr = i; - tp->nxt = newhnamemem(); + tp->nxt = newhnamemem(ndo); cp = buf; NTOHS(port); @@ -723,15 +776,18 @@ ipxsap_string(u_short port) *cp++ = hex[port & 0xf]; *cp++ = '\0'; tp->name = strdup(buf); + if (tp->name == NULL) + (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, + "ipxsap_string: strdup(buf)"); return (tp->name); } static void -init_servarray(void) +init_servarray(netdissect_options *ndo) { struct servent *sv; - register struct hnamemem *table; - register int i; + struct hnamemem *table; + int i; char buf[sizeof("0000000000")]; while ((sv = getservent()) != NULL) { @@ -746,33 +802,53 @@ init_servarray(void) while (table->name) table = table->nxt; - if (nflag) { - (void)snprintf(buf, sizeof(buf), "%d", port); + if (ndo->ndo_nflag) { + (void)nd_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, + "init_servarray: strdup"); + table->addr = port; - table->nxt = newhnamemem(); + table->nxt = newhnamemem(ndo); } endservent(); } -/* in libpcap.a (nametoaddr.c) */ -#if defined(WIN32) && !defined(USE_STATIC_LIBPCAP) -__declspec(dllimport) -#else -extern -#endif -const struct eproto { +static const struct eproto { const char *s; u_short p; -} eproto_db[]; +} eproto_db[] = { + { "pup", ETHERTYPE_PUP }, + { "xns", ETHERTYPE_NS }, + { "ip", ETHERTYPE_IP }, + { "ip6", ETHERTYPE_IPV6 }, + { "arp", ETHERTYPE_ARP }, + { "rarp", ETHERTYPE_REVARP }, + { "sprite", ETHERTYPE_SPRITE }, + { "mopdl", ETHERTYPE_MOPDL }, + { "moprc", ETHERTYPE_MOPRC }, + { "decnet", ETHERTYPE_DN }, + { "lat", ETHERTYPE_LAT }, + { "sca", ETHERTYPE_SCA }, + { "lanbridge", ETHERTYPE_LANBRIDGE }, + { "vexp", ETHERTYPE_VEXP }, + { "vprod", ETHERTYPE_VPROD }, + { "atalk", ETHERTYPE_ATALK }, + { "atalkarp", ETHERTYPE_AARP }, + { "loopback", ETHERTYPE_LOOPBACK }, + { "decdts", ETHERTYPE_DECDTS }, + { "decdns", ETHERTYPE_DECDNS }, + { (char *)0, 0 } +}; static void -init_eprotoarray(void) +init_eprotoarray(netdissect_options *ndo) { - register int i; - register struct hnamemem *table; + int i; + struct hnamemem *table; for (i = 0; eproto_db[i].s; i++) { int j = htons(eproto_db[i].p) & (HASHNAMESIZE-1); @@ -781,7 +857,7 @@ init_eprotoarray(void) table = table->nxt; table->name = eproto_db[i].s; table->addr = htons(eproto_db[i].p); - table->nxt = newhnamemem(); + table->nxt = newhnamemem(ndo); } } @@ -802,10 +878,10 @@ static const struct protoidlist { * types. */ static void -init_protoidarray(void) +init_protoidarray(netdissect_options *ndo) { - register int i; - register struct protoidmem *tp; + int i; + struct protoidmem *tp; const struct protoidlist *pl; u_char protoid[5]; @@ -816,12 +892,15 @@ init_protoidarray(void) u_short etype = htons(eproto_db[i].p); memcpy((char *)&protoid[3], (char *)&etype, 2); - tp = lookup_protoid(protoid); + 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, + "init_protoidarray: strdup(eproto_db[i].s)"); } /* Hardwire some SNAP proto ID names */ for (pl = protoidlist; pl->name != NULL; ++pl) { - tp = lookup_protoid(pl->protoid); + tp = lookup_protoid(ndo, pl->protoid); /* Don't override existing name */ if (tp->p_name != NULL) continue; @@ -853,22 +932,25 @@ static const struct etherlist { * translation, so we just pcap_next_etherent as a convenience. */ static void -init_etherarray(void) +init_etherarray(netdissect_options *ndo) { - register const struct etherlist *el; - register struct enamemem *tp; + const struct etherlist *el; + struct enamemem *tp; #ifdef USE_ETHER_NTOHOST char name[256]; #else - register struct pcap_etherent *ep; - register FILE *fp; + 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(ep->addr); + 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, + "init_etherarray: strdup(ep->addr)"); } (void)fclose(fp); } @@ -876,7 +958,7 @@ init_etherarray(void) /* Hardwire some ethernet names */ for (el = etherlist; el->name != NULL; ++el) { - tp = lookup_emem(el->addr); + tp = lookup_emem(ndo, el->addr); /* Don't override existing name */ if (tp->e_name != NULL) continue; @@ -884,14 +966,12 @@ init_etherarray(void) #ifdef USE_ETHER_NTOHOST /* * Use YP/NIS version of name if available. - * - * We don't cast it to "const struct ether_addr *" - * because some systems don't modify the Ethernet - * address but fail to declare the second argument - * as a "const" pointer. */ - if (ether_ntohost(name, (struct ether_addr *)el->addr) == 0) { + if (ether_ntohost(name, (const struct ether_addr *)el->addr) == 0) { tp->e_name = strdup(name); + if (tp->e_name == NULL) + (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, + "init_etherarray: strdup(name)"); continue; } #endif @@ -899,7 +979,10 @@ init_etherarray(void) } } -static const struct tok ipxsap_db[] = { +static const struct ipxsap_ent { + uint16_t v; + const char *s; +} ipxsap_db[] = { { 0x0000, "Unknown" }, { 0x0001, "User" }, { 0x0002, "User Group" }, @@ -1117,73 +1200,73 @@ static const struct tok ipxsap_db[] = { }; static void -init_ipxsaparray(void) +init_ipxsaparray(netdissect_options *ndo) { - register int i; - register struct hnamemem *table; + int i; + struct hnamemem *table; for (i = 0; ipxsap_db[i].s != NULL; i++) { - int j = htons(ipxsap_db[i].v) & (HASHNAMESIZE-1); + 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(); + table->nxt = newhnamemem(ndo); } } /* * Initialize the address to name translation machinery. We map all - * non-local IP addresses to numeric addresses if fflag is true (i.e., - * to prevent blocking on the nameserver). localnet is the IP address + * 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(u_int32_t localnet, u_int32_t mask) +init_addrtoname(netdissect_options *ndo, uint32_t localnet, uint32_t mask) { - if (fflag) { + if (ndo->ndo_fflag) { f_localnet = localnet; f_netmask = mask; } - if (nflag) + if (ndo->ndo_nflag) /* * Simplest way to suppress names. */ return; - init_etherarray(); - init_servarray(); - init_eprotoarray(); - init_protoidarray(); - init_ipxsaparray(); + init_etherarray(ndo); + init_servarray(ndo); + init_eprotoarray(ndo); + init_protoidarray(ndo); + init_ipxsaparray(ndo); } const char * -dnaddr_string(u_short dnaddr) +dnaddr_string(netdissect_options *ndo, u_short dnaddr) { - register struct hnamemem *tp; + struct hnamemem *tp; - for (tp = &dnaddrtable[dnaddr & (HASHNAMESIZE-1)]; tp->nxt != 0; + 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(); - if (nflag) - tp->name = dnnum_string(dnaddr); + tp->nxt = newhnamemem(ndo); + if (ndo->ndo_nflag) + tp->name = dnnum_string(ndo, dnaddr); else - tp->name = dnname_string(dnaddr); + tp->name = dnname_string(ndo, dnaddr); return(tp->name); } /* Return a zero'ed hnamemem struct and cuts down on calloc() overhead */ struct hnamemem * -newhnamemem(void) +newhnamemem(netdissect_options *ndo) { - register struct hnamemem *p; + struct hnamemem *p; static struct hnamemem *ptr = NULL; static u_int num = 0; @@ -1191,19 +1274,19 @@ newhnamemem(void) num = 64; ptr = (struct hnamemem *)calloc(num, sizeof (*ptr)); if (ptr == NULL) - error("newhnamemem: calloc"); + (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, + "newhnamemem: calloc"); } --num; p = ptr++; return (p); } -#ifdef INET6 /* Return a zero'ed h6namemem struct and cuts down on calloc() overhead */ struct h6namemem * -newh6namemem(void) +newh6namemem(netdissect_options *ndo) { - register struct h6namemem *p; + struct h6namemem *p; static struct h6namemem *ptr = NULL; static u_int num = 0; @@ -1211,10 +1294,22 @@ newh6namemem(void) num = 64; ptr = (struct h6namemem *)calloc(num, sizeof (*ptr)); if (ptr == NULL) - error("newh6namemem: calloc"); + (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, + "newh6namemem: calloc"); } --num; p = ptr++; return (p); } -#endif /* INET6 */ + +/* 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]; + nd_snprintf(buf, sizeof(buf), "vlan %u, p %u%s", + tci & 0xfff, + tci >> 13, + (tci & 0x1000) ? ", DEI" : ""); + return buf; +}