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Merge "Update getaddrinfo to RFC6724" into jb-mr2-dev

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This commit is contained in:
Lorenzo Colitti 2013-04-02 00:49:29 +00:00 committed by Android (Google) Code Review
commit 309e107f01
1 changed files with 27 additions and 27 deletions
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54
libc/netbsd/net/getaddrinfo.c
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@ -1518,10 +1518,8 @@ _get_scope(const struct sockaddr *addr)
return IPV6_ADDR_SCOPE_LINKLOCAL; return IPV6_ADDR_SCOPE_LINKLOCAL;
} else { } else {
/* /*
* According to draft-ietf-6man-rfc3484-revise-01 section 2.3, * RFC 6724 section 3.2. Other IPv4 addresses, including private addresses
* it is best not to treat the private IPv4 ranges * and shared addresses (100.64.0.0/10), are assigned global scope.
* (10.0.0.0/8, 172.16.0.0/12 and 192.168.0.0/16) as being
* in a special scope, so we don't.
*/ */
return IPV6_ADDR_SCOPE_GLOBAL; return IPV6_ADDR_SCOPE_GLOBAL;
} }
@ -1550,7 +1548,7 @@ _get_scope(const struct sockaddr *addr)
/* /*
* Get the label for a given IPv4/IPv6 address. * Get the label for a given IPv4/IPv6 address.
* RFC 3484, section 2.1, plus changes from draft-ietf-6man-rfc3484-revise-01. * RFC 6724, section 2.1.
*/ */
/*ARGSUSED*/ /*ARGSUSED*/
@ -1558,27 +1556,28 @@ static int
_get_label(const struct sockaddr *addr) _get_label(const struct sockaddr *addr)
{ {
if (addr->sa_family == AF_INET) { if (addr->sa_family == AF_INET) {
return 3; return 4;
} else if (addr->sa_family == AF_INET6) { } else if (addr->sa_family == AF_INET6) {
const struct sockaddr_in6 *addr6 = (const struct sockaddr_in6 *)addr; const struct sockaddr_in6 *addr6 = (const struct sockaddr_in6 *) addr;
if (IN6_IS_ADDR_LOOPBACK(&addr6->sin6_addr)) { if (IN6_IS_ADDR_LOOPBACK(&addr6->sin6_addr)) {
return 0; return 0;
} else if (IN6_IS_ADDR_ULA(&addr6->sin6_addr)) {
return 1;
} else if (IN6_IS_ADDR_V4MAPPED(&addr6->sin6_addr)) { } else if (IN6_IS_ADDR_V4MAPPED(&addr6->sin6_addr)) {
return 3;
} else if (IN6_IS_ADDR_6TO4(&addr6->sin6_addr)) {
return 4; return 4;
} else if (IN6_IS_ADDR_6TO4(&addr6->sin6_addr)) {
return 2;
} else if (IN6_IS_ADDR_TEREDO(&addr6->sin6_addr)) { } else if (IN6_IS_ADDR_TEREDO(&addr6->sin6_addr)) {
return 5; return 5;
} else if (IN6_IS_ADDR_ULA(&addr6->sin6_addr)) {
return 13;
} else if (IN6_IS_ADDR_V4COMPAT(&addr6->sin6_addr)) { } else if (IN6_IS_ADDR_V4COMPAT(&addr6->sin6_addr)) {
return 10; return 3;
} else if (IN6_IS_ADDR_SITELOCAL(&addr6->sin6_addr)) { } else if (IN6_IS_ADDR_SITELOCAL(&addr6->sin6_addr)) {
return 11; return 11;
} else if (IN6_IS_ADDR_6BONE(&addr6->sin6_addr)) { } else if (IN6_IS_ADDR_6BONE(&addr6->sin6_addr)) {
return 12; return 12;
} else { } else {
return 2; /* All other IPv6 addresses, including global unicast addresses. */
return 1;
} }
} else { } else {
/* /*
@ -1591,7 +1590,7 @@ _get_label(const struct sockaddr *addr)
/* /*
* Get the precedence for a given IPv4/IPv6 address. * Get the precedence for a given IPv4/IPv6 address.
* RFC 3484, section 2.1, plus changes from draft-ietf-6man-rfc3484-revise-01. * RFC 6724, section 2.1.
*/ */
/*ARGSUSED*/ /*ARGSUSED*/
@ -1599,24 +1598,25 @@ static int
_get_precedence(const struct sockaddr *addr) _get_precedence(const struct sockaddr *addr)
{ {
if (addr->sa_family == AF_INET) { if (addr->sa_family == AF_INET) {
return 30; return 35;
} else if (addr->sa_family == AF_INET6) { } else if (addr->sa_family == AF_INET6) {
const struct sockaddr_in6 *addr6 = (const struct sockaddr_in6 *)addr; const struct sockaddr_in6 *addr6 = (const struct sockaddr_in6 *)addr;
if (IN6_IS_ADDR_LOOPBACK(&addr6->sin6_addr)) { if (IN6_IS_ADDR_LOOPBACK(&addr6->sin6_addr)) {
return 60;
} else if (IN6_IS_ADDR_ULA(&addr6->sin6_addr)) {
return 50; return 50;
} else if (IN6_IS_ADDR_V4MAPPED(&addr6->sin6_addr)) { } else if (IN6_IS_ADDR_V4MAPPED(&addr6->sin6_addr)) {
return 30; return 35;
} else if (IN6_IS_ADDR_6TO4(&addr6->sin6_addr)) { } else if (IN6_IS_ADDR_6TO4(&addr6->sin6_addr)) {
return 20; return 30;
} else if (IN6_IS_ADDR_TEREDO(&addr6->sin6_addr)) { } else if (IN6_IS_ADDR_TEREDO(&addr6->sin6_addr)) {
return 10; return 5;
} else if (IN6_IS_ADDR_ULA(&addr6->sin6_addr)) {
return 3;
} else if (IN6_IS_ADDR_V4COMPAT(&addr6->sin6_addr) || } else if (IN6_IS_ADDR_V4COMPAT(&addr6->sin6_addr) ||
IN6_IS_ADDR_SITELOCAL(&addr6->sin6_addr) || IN6_IS_ADDR_SITELOCAL(&addr6->sin6_addr) ||
IN6_IS_ADDR_6BONE(&addr6->sin6_addr)) { IN6_IS_ADDR_6BONE(&addr6->sin6_addr)) {
return 1; return 1;
} else { } else {
/* All other IPv6 addresses, including global unicast addresses. */
return 40; return 40;
} }
} else { } else {
@ -1655,12 +1655,12 @@ _common_prefix_len(const struct in6_addr *a1, const struct in6_addr *a2)
/* /*
* Compare two source/destination address pairs. * Compare two source/destination address pairs.
* RFC 3484, section 6. * RFC 6724, section 6.
*/ */
/*ARGSUSED*/ /*ARGSUSED*/
static int static int
_rfc3484_compare(const void *ptr1, const void* ptr2) _rfc6724_compare(const void *ptr1, const void* ptr2)
{ {
const struct addrinfo_sort_elem *a1 = (const struct addrinfo_sort_elem *)ptr1; const struct addrinfo_sort_elem *a1 = (const struct addrinfo_sort_elem *)ptr1;
const struct addrinfo_sort_elem *a2 = (const struct addrinfo_sort_elem *)ptr2; const struct addrinfo_sort_elem *a2 = (const struct addrinfo_sort_elem *)ptr2;
@ -1731,7 +1731,7 @@ _rfc3484_compare(const void *ptr1, const void* ptr2)
/* /*
* Rule 9: Use longest matching prefix. * Rule 9: Use longest matching prefix.
* We implement this for IPv6 only, as the rules in RFC 3484 don't seem * We implement this for IPv6 only, as the rules in RFC 6724 don't seem
* to work very well directly applied to IPv4. (glibc uses information from * to work very well directly applied to IPv4. (glibc uses information from
* the routing table for a custom IPv4 implementation here.) * the routing table for a custom IPv4 implementation here.)
*/ */
@ -1811,13 +1811,13 @@ _find_src_addr(const struct sockaddr *addr, struct sockaddr *src_addr)
} }
/* /*
* Sort the linked list starting at sentinel->ai_next in RFC3484 order. * Sort the linked list starting at sentinel->ai_next in RFC6724 order.
* Will leave the list unchanged if an error occurs. * Will leave the list unchanged if an error occurs.
*/ */
/*ARGSUSED*/ /*ARGSUSED*/
static void static void
_rfc3484_sort(struct addrinfo *list_sentinel) _rfc6724_sort(struct addrinfo *list_sentinel)
{ {
struct addrinfo *cur; struct addrinfo *cur;
int nelem = 0, i; int nelem = 0, i;
@ -1852,7 +1852,7 @@ _rfc3484_sort(struct addrinfo *list_sentinel)
} }
/* Sort the addresses, and rearrange the linked list so it matches the sorted order. */ /* Sort the addresses, and rearrange the linked list so it matches the sorted order. */
qsort((void *)elems, nelem, sizeof(struct addrinfo_sort_elem), _rfc3484_compare); qsort((void *)elems, nelem, sizeof(struct addrinfo_sort_elem), _rfc6724_compare);
list_sentinel->ai_next = elems[0].ai; list_sentinel->ai_next = elems[0].ai;
for (i = 0; i < nelem - 1; ++i) { for (i = 0; i < nelem - 1; ++i) {
@ -2011,7 +2011,7 @@ _dns_getaddrinfo(void *rv, void *cb_data, va_list ap)
} }
} }
_rfc3484_sort(&sentinel); _rfc6724_sort(&sentinel);
__res_put_state(res); __res_put_state(res);