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2011-06-28 Andreas Schwab <schwab@redhat.com>
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* sysdeps/posix/getaddrinfo.c (gaih_inet): Don't use gethostbyaddr
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to determine canonical name.
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2011-06-22 Andreas Schwab <schwab@redhat.com>
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* sysdeps/posix/getaddrinfo.c (gaih_inet): Fix last change.
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2011-06-21 Ulrich Drepper <drepper@gmail.com>
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[BZ #12885]
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* sysdeps/posix/getaddrinfo.c (gaih_inet): When looking up only IPv6
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addresses using gethostbyname4_r ignore IPv4 addresses.
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Index: glibc-2.12-2-gc4ccff1/sysdeps/posix/getaddrinfo.c
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===================================================================
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--- glibc-2.12-2-gc4ccff1.orig/sysdeps/posix/getaddrinfo.c
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+++ glibc-2.12-2-gc4ccff1/sysdeps/posix/getaddrinfo.c
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@@ -512,10 +512,11 @@ gaih_inet (const char *name, const struc
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/* If we do not have to look for IPv4 and IPv6 together, use
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the simple, old functions. */
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- if (req->ai_family == AF_INET
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- || (req->ai_family == AF_INET6
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- && ((req->ai_flags & AI_V4MAPPED) == 0
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- || (req->ai_flags & AI_ALL) == 0)))
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+ if ((req->ai_family == AF_INET
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+ || (req->ai_family == AF_INET6
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+ && ((req->ai_flags & AI_V4MAPPED) == 0
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+ || (req->ai_flags & AI_ALL) == 0)))
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+ && (req->ai_flags & AI_CANONNAME) == 0)
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{
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int family = req->ai_family;
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size_t tmpbuflen = 512;
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@@ -731,16 +732,44 @@ gaih_inet (const char *name, const struc
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tmpbuflen, 2 * tmpbuflen);
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}
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- no_inet6_data = no_data;
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-
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if (status == NSS_STATUS_SUCCESS)
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{
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+ assert (!no_data);
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+ no_data = 1;
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+
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if ((req->ai_flags & AI_CANONNAME) != 0 && canon == NULL)
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canon = (*pat)->name;
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while (*pat != NULL)
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- pat = &((*pat)->next);
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+ {
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+ if ((*pat)->family == AF_INET
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+ && req->ai_family == AF_INET6
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+ && (req->ai_flags & AI_V4MAPPED) != 0)
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+ {
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+ uint32_t *pataddr = (*pat)->addr;
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+ (*pat)->family = AF_INET6;
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+ pataddr[3] = pataddr[0];
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+ pataddr[2] = htonl (0xffff);
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+ pataddr[1] = 0;
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+ pataddr[0] = 0;
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+ pat = &((*pat)->next);
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+ no_data = 0;
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+ }
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+ else if (req->ai_family == AF_UNSPEC
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+ || (*pat)->family == req->ai_family)
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+ {
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+ pat = &((*pat)->next);
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+
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+ no_data = 0;
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+ if (req->ai_family == AF_INET6)
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+ got_ipv6 = true;
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+ }
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+ else
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+ *pat = ((*pat)->next);
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+ }
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}
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+
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+ no_inet6_data = no_data;
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}
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else
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{
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@@ -905,39 +934,9 @@ gaih_inet (const char *name, const struc
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{
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if (canon == NULL)
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{
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- struct hostent *h = NULL;
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- int herrno;
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- struct hostent th;
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- size_t tmpbuflen = 512;
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- char *tmpbuf = NULL;
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-
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- do
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- {
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- tmpbuf = extend_alloca (tmpbuf, tmpbuflen, tmpbuflen * 2);
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- rc = __gethostbyaddr_r (at2->addr,
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- ((at2->family == AF_INET6)
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- ? sizeof (struct in6_addr)
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- : sizeof (struct in_addr)),
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- at2->family, &th, tmpbuf,
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- tmpbuflen, &h, &herrno);
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- }
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- while (rc == ERANGE && herrno == NETDB_INTERNAL);
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-
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- if (rc != 0 && herrno == NETDB_INTERNAL)
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- {
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- __set_h_errno (herrno);
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- return -EAI_SYSTEM;
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- }
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-
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- if (h != NULL)
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- canon = h->h_name;
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- else
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- {
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- assert (orig_name != NULL);
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- /* If the canonical name cannot be determined, use
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- the passed in string. */
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- canon = orig_name;
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- }
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+ /* If the canonical name cannot be determined, use
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+ the passed in string. */
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+ canon = orig_name;
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}
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#ifdef HAVE_LIBIDN
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