* 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 1.116 2006-02-11 22:11:40 hannes Exp $ (LBL)";
-#endif
#ifdef HAVE_CONFIG_H
#include "config.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
+ * error() called on strdup(3) failure
*/
#define HASHNAMESIZE 4096
-#define BUFSIZE 128
struct hnamemem {
- u_int32_t addr;
+ uint32_t addr;
const char *name;
struct hnamemem *nxt;
};
-struct hnamemem hnametable[HASHNAMESIZE];
-struct hnamemem tporttable[HASHNAMESIZE];
-struct hnamemem uporttable[HASHNAMESIZE];
-struct hnamemem eprototable[HASHNAMESIZE];
-struct hnamemem dnaddrtable[HASHNAMESIZE];
-struct hnamemem ipxsaptable[HASHNAMESIZE];
+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];
-#if defined(INET6) && defined(WIN32)
+#if defined(INET6) && defined(_WIN32)
/*
* fake gethostbyaddr for Win2k/XP
* gethostbyaddr() returns incorrect value when AF_INET6 is passed
}
}
#define gethostbyaddr win32_gethostbyaddr
-#endif /* INET6 & WIN32 */
+#endif /* INET6 & _WIN32 */
#ifdef INET6
struct h6namemem {
struct h6namemem *nxt;
};
-struct h6namemem h6nametable[HASHNAMESIZE];
+static struct h6namemem h6nametable[HASHNAMESIZE];
#endif /* INET6 */
struct enamemem {
struct enamemem *e_nxt;
};
-struct enamemem enametable[HASHNAMESIZE];
-struct enamemem nsaptable[HASHNAMESIZE];
-struct enamemem bytestringtable[HASHNAMESIZE];
+static struct enamemem enametable[HASHNAMESIZE];
+static struct enamemem nsaptable[HASHNAMESIZE];
+static struct enamemem 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;
};
-struct protoidmem protoidtable[HASHNAMESIZE];
+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;
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;
/*
* Return a name for the IP address pointed to by ap. This address
*
* 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{2}/ND_TTEST{2} 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
* also needs to check whether they're present in the packet buffer.
*/
const char *
-getname(const u_char *ap)
+getname(netdissect_options *ndo, const u_char *ap)
{
register struct hostent *hp;
- u_int32_t addr;
- static struct hnamemem *p; /* static for longjmp() */
+ uint32_t addr;
+ struct hnamemem *p;
memcpy(&addr, ap, sizeof(addr));
p = &hnametable[addr & (HASHNAMESIZE-1)];
* 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);
if (hp) {
char *dotp;
p->name = strdup(hp->h_name);
- if (Nflag) {
+ if (p->name == NULL)
+ error("getname: strdup(hp->h_name)");
+ if (ndo->ndo_Nflag) {
/* Remove domain qualifications */
dotp = strchr(p->name, '.');
if (dotp)
}
}
p->name = strdup(intoa(addr));
+ if (p->name == NULL)
+ error("getname: strdup(intoa(addr))");
return (p->name);
}
* is assumed to be in network byte order.
*/
const char *
-getname6(const u_char *ap)
+getname6(netdissect_options *ndo, const u_char *ap)
{
register struct hostent *hp;
- struct in6_addr addr;
- static struct h6namemem *p; /* static for longjmp() */
+ union {
+ struct in6_addr addr;
+ struct for_hash_addr {
+ char fill[14];
+ uint16_t d;
+ } addra;
+ } addr;
+ struct h6namemem *p;
register const char *cp;
char ntop_buf[INET6_ADDRSTRLEN];
memcpy(&addr, ap, sizeof(addr));
- p = &h6nametable[*(u_int16_t *)&addr.s6_addr[14] & (HASHNAMESIZE-1)];
+ p = &h6nametable[addr.addra.d & (HASHNAMESIZE-1)];
for (; p->nxt; p = p->nxt) {
if (memcmp(&p->addr, &addr, sizeof(addr)) == 0)
return (p->name);
}
- p->addr = addr;
+ p->addr = addr.addr;
p->nxt = newh6namemem();
/*
* Do not print names if -n was given.
*/
- if (!nflag) {
+ if (!ndo->ndo_nflag) {
hp = gethostbyaddr((char *)&addr, sizeof(addr), AF_INET6);
if (hp) {
char *dotp;
p->name = strdup(hp->h_name);
- if (Nflag) {
+ if (p->name == NULL)
+ error("getname6: strdup(hp->h_name)");
+ if (ndo->ndo_Nflag) {
/* Remove domain qualifications */
dotp = strchr(p->name, '.');
if (dotp)
}
cp = inet_ntop(AF_INET6, &addr, ntop_buf, sizeof(ntop_buf));
p->name = strdup(cp);
+ if (p->name == NULL)
+ error("getname6: strdup(cp)");
return (p->name);
}
#endif /* INET6 */
-static char hex[] = "0123456789abcdef";
+static const char hex[] = "0123456789abcdef";
/* Find the hash node that corresponds the ether address 'ep' */
tp->e_addr2 = k;
tp->e_bs = (u_char *) calloc(1, nlen + 1);
+ if (tp->e_bs == NULL)
+ error("lookup_bytestring: calloc");
+
memcpy(tp->e_bs, bs, nlen);
tp->e_nxt = (struct enamemem *)calloc(1, sizeof(*tp));
if (tp->e_nxt == NULL)
}
const char *
-etheraddr_string(register const u_char *ep)
+etheraddr_string(netdissect_options *ndo, register const u_char *ep)
{
register int i;
register char *cp;
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)
+ error("etheraddr_string: strdup(buf2)");
return (tp->e_name);
}
}
*cp++ = hex[*ep++ & 0xf];
}
- if (!nflag) {
+ 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)
+ error("etheraddr_string: strdup(buf)");
return (tp->e_name);
}
const char *
-linkaddr_string(const u_char *ep, const unsigned int type, const unsigned int len)
+le64addr_string(const u_char *ep)
{
+ const unsigned int len = 8;
register u_int i;
register char *cp;
register struct enamemem *tp;
+ char buf[BUFSIZE];
+
+ tp = lookup_bytestring(ep, len);
+ if (tp->e_name)
+ return (tp->e_name);
- if (type == LINKADDR_ETHER && len == ETHER_ADDR_LEN) {
- return etheraddr_string(ep);
- }
+ cp = buf;
+ for (i = len; i > 0 ; --i) {
+ *cp++ = hex[*(ep + i - 1) >> 4];
+ *cp++ = hex[*(ep + i - 1) & 0xf];
+ *cp++ = ':';
+ }
+ cp --;
- if (type == LINKADDR_FRELAY) {
- return q922_string(ep);
- }
+ *cp = '\0';
+
+ tp->e_name = strdup(buf);
+ if (tp->e_name == NULL)
+ error("le64addr_string: strdup(buf)");
+
+ return (tp->e_name);
+}
+
+const char *
+linkaddr_string(netdissect_options *ndo, const u_char *ep, const unsigned int type, const unsigned int len)
+{
+ register u_int i;
+ register char *cp;
+ register struct enamemem *tp;
+
+ if (len == 0)
+ return ("<empty>");
+
+ if (type == LINKADDR_ETHER && len == ETHER_ADDR_LEN)
+ return (etheraddr_string(ndo, ep));
+
+ if (type == LINKADDR_FRELAY)
+ return (q922_string(ndo, ep, len));
tp = lookup_bytestring(ep, len);
if (tp->e_name)
{
register char *cp;
register struct hnamemem *tp;
- register u_int32_t i = port;
+ register uint32_t i = port;
char buf[sizeof("0000")];
for (tp = &eprototable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt)
*cp++ = hex[port & 0xf];
*cp++ = '\0';
tp->name = strdup(buf);
+ if (tp->name == NULL)
+ error("etherproto_string: strdup(buf)");
return (tp->name);
}
}
*cp = '\0';
tp->p_name = strdup(buf);
+ if (tp->p_name == NULL)
+ error("protoid_string: strdup(buf)");
return (tp->p_name);
}
tcpport_string(u_short port)
{
register struct hnamemem *tp;
- register u_int32_t i = port;
+ register uint32_t i = port;
char buf[sizeof("00000")];
for (tp = &tporttable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt)
(void)snprintf(buf, sizeof(buf), "%u", i);
tp->name = strdup(buf);
+ if (tp->name == NULL)
+ error("tcpport_string: strdup(buf)");
return (tp->name);
}
udpport_string(register u_short port)
{
register struct hnamemem *tp;
- register u_int32_t i = port;
+ register uint32_t i = port;
char buf[sizeof("00000")];
for (tp = &uporttable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt)
(void)snprintf(buf, sizeof(buf), "%u", i);
tp->name = strdup(buf);
+ if (tp->name == NULL)
+ error("udpport_string: strdup(buf)");
return (tp->name);
}
{
register char *cp;
register struct hnamemem *tp;
- register u_int32_t i = port;
+ register uint32_t i = port;
char buf[sizeof("0000")];
for (tp = &ipxsaptable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt)
*cp++ = hex[port & 0xf];
*cp++ = '\0';
tp->name = strdup(buf);
+ if (tp->name == NULL)
+ error("ipxsap_string: strdup(buf)");
return (tp->name);
}
static void
-init_servarray(void)
+init_servarray(netdissect_options *ndo)
{
struct servent *sv;
register struct hnamemem *table;
while (table->name)
table = table->nxt;
- if (nflag) {
+ 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)
+ error("init_servarray: strdup");
+
table->addr = port;
table->nxt = newhnamemem();
}
}
/* in libpcap.a (nametoaddr.c) */
-#if defined(WIN32) && !defined(USE_STATIC_LIBPCAP)
-__declspec(dllimport)
+#if defined(_WIN32) && !defined(USE_STATIC_LIBPCAP)
+extern __declspec(dllimport)
#else
extern
#endif
}
}
-static struct protoidlist {
+static const struct protoidlist {
const u_char protoid[5];
const char *name;
} protoidlist[] = {
{
register int i;
register struct protoidmem *tp;
- struct protoidlist *pl;
+ const struct protoidlist *pl;
u_char protoid[5];
protoid[0] = 0;
memcpy((char *)&protoid[3], (char *)&etype, 2);
tp = lookup_protoid(protoid);
tp->p_name = strdup(eproto_db[i].s);
+ if (tp->p_name == NULL)
+ error("init_protoidarray: strdup(eproto_db[i].s)");
}
/* Hardwire some SNAP proto ID names */
for (pl = protoidlist; pl->name != NULL; ++pl) {
}
}
-static struct etherlist {
+static const struct etherlist {
const u_char addr[6];
const char *name;
} etherlist[] = {
static void
init_etherarray(void)
{
- register struct etherlist *el;
+ register const struct etherlist *el;
register struct enamemem *tp;
#ifdef USE_ETHER_NTOHOST
char name[256];
while ((ep = pcap_next_etherent(fp)) != NULL) {
tp = lookup_emem(ep->addr);
tp->e_name = strdup(ep->name);
+ if (tp->e_name == NULL)
+ error("init_etherarray: strdup(ep->addr)");
}
(void)fclose(fp);
}
#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)
+ error("init_etherarray: strdup(name)");
continue;
}
#endif
}
}
-static struct tok ipxsap_db[] = {
+static const struct tok ipxsap_db[] = {
{ 0x0000, "Unknown" },
{ 0x0001, "User" },
{ 0x0002, "User Group" },
/*
* 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_servarray(ndo);
init_eprotoarray();
init_protoidarray();
init_ipxsaparray();
}
const char *
-dnaddr_string(u_short dnaddr)
+dnaddr_string(netdissect_options *ndo, u_short dnaddr)
{
register struct hnamemem *tp;
tp->addr = dnaddr;
tp->nxt = newhnamemem();
- if (nflag)
+ if (ndo->ndo_nflag)
tp->name = dnnum_string(dnaddr);
else
tp->name = dnname_string(dnaddr);
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];
+ snprintf(buf, sizeof(buf), "vlan %u, p %u%s",
+ tci & 0xfff,
+ tci >> 13,
+ (tci & 0x1000) ? ", DEI" : "");
+ return buf;
+}
projects / tcpdump / blobdiff