#include "netdissect.h"
#include "addrtoname.h"
#include "addrtostr.h"
+#include "ethertype.h"
#include "llc.h"
#include "setsignal.h"
#include "extract.h"
hname, sizeof(hname), NULL, 0, 0)) {
return NULL;
} else {
- strcpy(host.h_name, hname);
+ strlcpy(host.h_name, hname, NI_MAXHOST);
return &host;
}
break;
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 {
uint32_t p_oui;
return (p->name);
}
-static const char hex[] = "0123456789abcdef";
+static const char hex[16] = "0123456789abcdef";
/* Find the hash node that corresponds the ether address 'ep' */
* with length 'nlen'
*/
-static inline struct enamemem *
+static inline struct bsnamemem *
lookup_bytestring(netdissect_options *ndo, register const u_char *bs,
const unsigned int nlen)
{
- struct enamemem *tp;
+ struct bsnamemem *tp;
register u_int i, j, k;
if (nlen >= 6) {
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 = i;
+ tp->bs_addr1 = j;
+ tp->bs_addr2 = k;
- tp->e_bs = (u_char *) calloc(1, nlen + 1);
- if (tp->e_bs == NULL)
+ tp->bs_bytes = (u_char *) calloc(1, nlen);
+ if (tp->bs_bytes == NULL)
(*ndo->ndo_error)(ndo, "lookup_bytestring: calloc");
- memcpy(tp->e_bs, bs, nlen);
- tp->e_nxt = (struct enamemem *)calloc(1, sizeof(*tp));
- if (tp->e_nxt == NULL)
+ 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, "lookup_bytestring: calloc");
return tp;
/* Find the hash node that corresponds the NSAP 'nsap' */
static inline struct enamemem *
-lookup_nsap(netdissect_options *ndo, register const u_char *nsap)
+lookup_nsap(netdissect_options *ndo, register const u_char *nsap,
+ register u_int nsap_length)
{
register u_int i, j, k;
- unsigned int nlen = *nsap;
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];
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_nsap = (u_char *)malloc(nsap_length + 1);
if (tp->e_nsap == NULL)
(*ndo->ndo_error)(ndo, "lookup_nsap: malloc");
- memcpy((char *)tp->e_nsap, (const char *)nsap, nlen + 1);
+ 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, "lookup_nsap: calloc");
const unsigned int len = 8;
register u_int i;
register char *cp;
- register struct enamemem *tp;
+ register struct bsnamemem *tp;
char buf[BUFSIZE];
tp = lookup_bytestring(ndo, ep, len);
- if (tp->e_name)
- return (tp->e_name);
+ if (tp->bs_name)
+ return (tp->bs_name);
cp = buf;
for (i = len; i > 0 ; --i) {
*cp = '\0';
- tp->e_name = strdup(buf);
- if (tp->e_name == NULL)
+ tp->bs_name = strdup(buf);
+ if (tp->bs_name == NULL)
(*ndo->ndo_error)(ndo, "le64addr_string: strdup(buf)");
- return (tp->e_name);
+ return (tp->bs_name);
}
const char *
{
register u_int i;
register char *cp;
- register struct enamemem *tp;
+ register struct bsnamemem *tp;
if (len == 0)
return ("<empty>");
return (q922_string(ndo, ep, len));
tp = lookup_bytestring(ndo, ep, len);
- if (tp->e_name)
- return (tp->e_name);
+ if (tp->bs_name)
+ return (tp->bs_name);
- tp->e_name = cp = (char *)malloc(len*3);
- if (tp->e_name == NULL)
+ tp->bs_name = cp = (char *)malloc(len*3);
+ if (tp->bs_name == NULL)
(*ndo->ndo_error)(ndo, "linkaddr_string: malloc");
*cp++ = hex[*ep >> 4];
*cp++ = hex[*ep++ & 0xf];
*cp++ = hex[*ep++ & 0xf];
}
*cp = '\0';
- return (tp->e_name);
+ return (tp->bs_name);
}
const char *
if (nsap_length < 1 || nsap_length > ISONSAP_MAX_LENGTH)
return ("isonsap_string: illegal length");
- tp = lookup_nsap(ndo, nsap);
+ tp = lookup_nsap(ndo, nsap, nsap_length);
if (tp->e_name)
return tp->e_name;
endservent();
}
-/* in libpcap.a (nametoaddr.c) */
-#if defined(_WIN32) && !defined(USE_STATIC_LIBPCAP)
-extern __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(netdissect_options *ndo)
{
register 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(ndo);
- if (ndo->ndo_nflag)
- tp->name = dnnum_string(ndo, dnaddr);
- else
- tp->name = dnname_string(ndo, dnaddr);
+ tp->name = dnnum_string(ndo, dnaddr);
return(tp->name);
}
projects / tcpdump / blobdiff