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ngx_inet6_addr()

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This commit is contained in:
Igor Sysoev 2009-11-02 12:50:00 +00:00
parent 19811dbdde
commit 5a76cbbbc6
2 changed files with 123 additions and 0 deletions
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120
src/core/ngx_inet.c
View File

@ -59,6 +59,126 @@ ngx_inet_addr(u_char *text, size_t len)
}
#if (NGX_HAVE_INET6)
ngx_int_t
ngx_inet6_addr(u_char *p, size_t len, u_char *addr)
{
u_char c, *zero, *digit, *s, *d;
size_t len4;
ngx_uint_t n, nibbles, word;
if (len == 0) {
return NGX_ERROR;
}
zero = NULL;
digit = NULL;
len4 = 0;
nibbles = 0;
word = 0;
n = 8;
if (p[0] == ':') {
p++;
len--;
}
for (/* void */; len; len--) {
c = *p++;
if (c == ':') {
if (nibbles) {
digit = p;
len4 = len;
*addr++ = (u_char) (word >> 8);
*addr++ = (u_char) (word & 0xff);
if (--n) {
nibbles = 0;
word = 0;
continue;
}
} else {
if (zero == NULL) {
digit = p;
len4 = len;
zero = addr;
continue;
}
}
return NGX_ERROR;
}
if (c == '.' && nibbles) {
if (n < 2) {
return NGX_ERROR;
}
word = ngx_inet_addr(digit, len4 - 1);
if (word == INADDR_NONE) {
return NGX_ERROR;
}
word = ntohl(word);
*addr++ = (u_char) ((word >> 24) & 0xff);
*addr++ = (u_char) ((word >> 16) & 0xff);
n--;
break;
}
if (++nibbles > 4) {
return NGX_ERROR;
}
if (c >= '0' && c <= '9') {
word = word * 16 + (c - '0');
continue;
}
c |= 0x20;
if (c >= 'a' && c <= 'f') {
word = word * 16 + (c - 'a') + 10;
continue;
}
return NGX_ERROR;
}
if (nibbles == 0 && zero == NULL) {
return NGX_ERROR;
}
*addr++ = (u_char) (word >> 8);
*addr++ = (u_char) (word & 0xff);
if (--n) {
if (zero) {
n *= 2;
s = addr - 1;
d = s + n;
while (s >= zero) {
*d-- = *s--;
}
ngx_memzero(zero, n);
return NGX_OK;
}
} else {
if (zero == NULL) {
return NGX_OK;
}
}
return NGX_ERROR;
}
#endif
size_t
ngx_sock_ntop(struct sockaddr *sa, u_char *text, size_t len, ngx_uint_t port)
{

3
src/core/ngx_inet.h
View File

@ -102,6 +102,9 @@ typedef struct {
in_addr_t ngx_inet_addr(u_char *text, size_t len);
#if (NGX_HAVE_INET6)
ngx_int_t ngx_inet6_addr(u_char *p, size_t len, u_char *addr);
#endif
size_t ngx_sock_ntop(struct sockaddr *sa, u_char *text, size_t len,
ngx_uint_t port);
size_t ngx_inet_ntop(int family, void *addr, u_char *text, size_t len);