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Code Issues Releases Wiki Activity

simply _equal; add _hash

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This commit is contained in:
Bob Halley
1999-07-08 00:04:44 +00:00
parent 86f2133b76
commit 56f6fd8362
1 changed files with 50 additions and 31 deletions
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81
lib/isc/sockaddr.c
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@@ -30,40 +30,59 @@
isc_boolean_t
isc_sockaddr_equal(isc_sockaddr_t *a, isc_sockaddr_t *b)
{
struct sockaddr *sa, *sb;
REQUIRE(a != NULL && b != NULL);
sa = (struct sockaddr *)&a->type;
sb = (struct sockaddr *)&b->type;
if (sa->sa_family != sb->sa_family)
if (a->length != b->length)
return (ISC_FALSE);
#ifdef HAVE_SA_LEN
if (sa->sa_len != sb->sa_len)
if (memcmp(&a->type, &b->type, a->length) != 0)
return (ISC_FALSE);
if (memcmp(sa->sa_data, sb->sa_data, sa->sa_len) != 0)
return (ISC_FALSE);
#else
switch (sa->sa_family) {
case AF_INET: {
struct sockaddr_in *sina, *sinb;
sina = (struct sockaddr_in *)sa;
sinb = (struct sockaddr_in *)sb;
if (sina->sin_port != sinb->sin_port)
return (ISC_FALSE);
if (memcmp(&sina->sin_addr, &sinb->sin_addr, 4) != 0)
return (ISC_FALSE);
return (ISC_TRUE);
}
default:
INSIST("Unknown socket protocol");
break;
}
#endif
UNEXPECTED_ERROR(__FILE__, __LINE__, "Cannot happen");
return (ISC_FALSE);
return (ISC_TRUE);
}
unsigned int
isc_sockaddr_hash(isc_sockaddr_t *sockaddr, isc_boolean_t address_only) {
unsigned int length;
const unsigned char *s;
unsigned int h = 0;
unsigned int g;
/*
* Provide a hash value for 'sockaddr'.
*/
REQUIRE(sockaddr != NULL);
if (address_only) {
switch (sockaddr->type.sa.sa_family) {
case AF_INET:
return (ntohl(sockaddr->type.sin.sin_addr.s_addr));
case AF_INET6:
s = (unsigned char *)&sockaddr->type.sin6.sin6_addr;
length = sizeof sockaddr->type.sin6.sin6_addr;
break;
default:
UNEXPECTED_ERROR(__FILE__, __LINE__,
"unknown address family: %d\n",
(int)sockaddr->type.sa.sa_family);
s = (unsigned char *)&sockaddr->type;
length = sockaddr->length;
}
} else {
s = (unsigned char *)&sockaddr->type;
length = sockaddr->length;
}
while (length > 0) {
h = ( h << 4 ) + *s;
if ((g = ( h & 0xf0000000 )) != 0) {
h = h ^ (g >> 24);
h = h ^ g;
}
s++;
length--;
}
return (h);
}