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ngx_ptocidr() supports IPv6

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This commit is contained in:
Igor Sysoev 2009-11-03 13:42:25 +00:00
parent fd078fd6d5
commit 4ac5ca8ae0
1 changed files with 67 additions and 27 deletions
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94
src/core/ngx_inet.c
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@ -354,29 +354,45 @@ ngx_inet6_ntop(u_char *p, u_char *text, size_t len)
#endif
/* AF_INET only */
ngx_int_t
ngx_ptocidr(ngx_str_t *text, ngx_cidr_t *cidr)
{
u_char *addr, *mask, *last;
ngx_int_t shift;
u_char *addr, *mask, *last;
size_t len;
ngx_int_t shift;
#if (NGX_HAVE_INET6)
ngx_int_t rc;
ngx_uint_t s, i;
#endif
addr = text->data;
last = addr + text->len;
mask = ngx_strlchr(addr, last, '/');
len = (mask ? mask : last) - addr;
cidr->u.in.addr = ngx_inet_addr(addr, (mask ? mask : last) - addr);
cidr->u.in.addr = ngx_inet_addr(addr, len);
if (cidr->u.in.addr == INADDR_NONE) {
return NGX_ERROR;
}
if (mask == NULL) {
if (cidr->u.in.addr != INADDR_NONE) {
cidr->family = AF_INET;
cidr->u.in.mask = 0xffffffff;
return NGX_OK;
if (mask == NULL) {
cidr->u.in.mask = 0xffffffff;
return NGX_OK;
}
#if (NGX_HAVE_INET6)
} else if (ngx_inet6_addr(addr, len, cidr->u.in6.addr.s6_addr) == NGX_OK) {
cidr->family = AF_INET6;
if (mask == NULL) {
ngx_memset(cidr->u.in6.mask.s6_addr, 0xff, 16);
return NGX_OK;
}
#endif
} else {
return NGX_ERROR;
}
mask++;
@ -386,30 +402,48 @@ ngx_ptocidr(ngx_str_t *text, ngx_cidr_t *cidr)
return NGX_ERROR;
}
cidr->family = AF_INET;
switch (cidr->family) {
if (shift == 0) {
#if (NGX_HAVE_INET6)
case AF_INET6:
addr = cidr->u.in6.addr.s6_addr;
mask = cidr->u.in6.mask.s6_addr;
rc = NGX_OK;
/* the x86 compilers use the shl instruction that shifts by modulo 32 */
for (i = 0; i < 16; i++) {
cidr->u.in.mask = 0;
s = (shift > 8) ? 8 : shift;
shift -= s;
if (cidr->u.in.addr == 0) {
mask[i] = (u_char) (0 - (1 << (8 - s)));
if (addr[i] != (addr[i] & mask[i])) {
rc = NGX_DONE;
addr[i] &= mask[i];
}
}
return rc;
#endif
default: /* AF_INET */
if (shift) {
cidr->u.in.mask = htonl((ngx_uint_t) (0 - (1 << (32 - shift))));
} else {
/* x86 compilers use a shl instruction that shifts by modulo 32 */
cidr->u.in.mask = 0;
}
if (cidr->u.in.addr == (cidr->u.in.addr & cidr->u.in.mask)) {
return NGX_OK;
}
cidr->u.in.addr &= cidr->u.in.mask;
return NGX_DONE;
}
cidr->u.in.mask = htonl((ngx_uint_t) (0 - (1 << (32 - shift))));
if (cidr->u.in.addr == (cidr->u.in.addr & cidr->u.in.mask)) {
return NGX_OK;
}
cidr->u.in.addr &= cidr->u.in.mask;
return NGX_DONE;
}
@ -422,6 +456,12 @@ ngx_parse_addr(ngx_pool_t *pool, ngx_addr_t *addr, u_char *text, size_t len)
#if (NGX_HAVE_INET6)
struct in6_addr inaddr6;
struct sockaddr_in6 *sin6;
/*
* prevent MSVC8 waring:
* potentially uninitialized local variable 'inaddr6' used
*/
ngx_memzero(inaddr6.s6_addr, sizeof(struct in6_addr));
#endif
inaddr = ngx_inet_addr(text, len);