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2004-03-13  Ulrich Drepper  <drepper@redhat.com>

	* resolv/netdb.h (EAI_OVERFLOW): Define.
	(NI_IDN): Define.
	* inet/getnameinfo.c (getnameinfo): Return error in case argument
	buffers overflow.  Implement NI_IDN.

2004-03-12  Ulrich Drepper  <drepper@redhat.com>

	* resolv/netdb.h: Define AI_CANONIDN.
	* sysdeps/posix/getaddrinfo.c: Implement AI_CANONIDN.
This commit is contained in:
Ulrich Drepper 2004-03-13 08:47:19 +00:00
parent d0b23069f7
commit ab0fcbfaaa
2 changed files with 60 additions and 13 deletions
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12
ChangeLog
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@ -1,3 +1,15 @@
2004-03-13 Ulrich Drepper <drepper@redhat.com>
* resolv/netdb.h (EAI_OVERFLOW): Define.
(NI_IDN): Define.
* inet/getnameinfo.c (getnameinfo): Return error in case argument
buffers overflow. Implement NI_IDN.
2004-03-12 Ulrich Drepper <drepper@redhat.com>
* resolv/netdb.h: Define AI_CANONIDN.
* sysdeps/posix/getaddrinfo.c: Implement AI_CANONIDN.
2004-03-12 Richard Henderson <rth@redhat.com> 2004-03-12 Richard Henderson <rth@redhat.com>
* sysdeps/unix/sysv/linux/alpha/select.S: Fix unwind. Propagate * sysdeps/unix/sysv/linux/alpha/select.S: Fix unwind. Propagate

61
inet/getnameinfo.c
View File

@ -51,6 +51,12 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <sys/utsname.h> #include <sys/utsname.h>
#include <bits/libc-lock.h> #include <bits/libc-lock.h>
#ifdef HAVE_LIBIDN
# include <libidn/idna.h>
extern int __idna_to_unicode_lzlz (const char *input, char **output,
int flags);
#endif
#ifndef min #ifndef min
# define min(x,y) (((x) > (y)) ? (y) : (x)) # define min(x,y) (((x) > (y)) ? (y) : (x))
#endif /* min */ #endif /* min */
@ -160,7 +166,11 @@ getnameinfo (const struct sockaddr *sa, socklen_t addrlen, char *host,
struct hostent th; struct hostent th;
int ok = 0; int ok = 0;
if (flags & ~(NI_NUMERICHOST|NI_NUMERICSERV|NI_NOFQDN|NI_NAMEREQD|NI_DGRAM)) if (flags & ~(NI_NUMERICHOST|NI_NUMERICSERV|NI_NOFQDN|NI_NAMEREQD|NI_DGRAM
#ifdef HAVE_LIBIDN
|NI_IDN
#endif
))
return EAI_BADFLAGS; return EAI_BADFLAGS;
if (sa == NULL || addrlen < sizeof (sa_family_t)) if (sa == NULL || addrlen < sizeof (sa_family_t))
@ -244,18 +254,39 @@ getnameinfo (const struct sockaddr *sa, socklen_t addrlen, char *host,
&& (c = nrl_domainname ()) && (c = nrl_domainname ())
&& (c = strstr (h->h_name, c)) && (c = strstr (h->h_name, c))
&& (c != h->h_name) && (*(--c) == '.')) && (c != h->h_name) && (*(--c) == '.'))
/* Terminate the string after the prefix. */
*c = '\0';
#ifdef HAVE_LIBIDN
/* If requested, convert from the IDN format. */
if (flags & NI_IDN)
{ {
strncpy (host, h->h_name, char *out;
min(hostlen, (size_t) (c - h->h_name))); int rc = __idna_to_unicode_lzlz (h->h_name, &out, 0);
host[min(hostlen - 1, (size_t) (c - h->h_name))] if (rc != IDNA_SUCCESS)
= '\0'; {
ok = 1; if (rc == IDNA_MALLOC_ERROR)
} return EAI_MEMORY;
else if (rc == IDNA_DLOPEN_ERROR)
{ return EAI_SYSTEM;
strncpy (host, h->h_name, hostlen); return EAI_IDN_ENCODE;
ok = 1; }
if (out != h->h_name)
{
h->h_name = strdupa (out);
free (out);
}
} }
#endif
size_t len = strlen (h->h_name) + 1;
if (len > hostlen)
return EAI_OVERFLOW;
memcpy (host, h->h_name, len);
ok = 1;
} }
} }
@ -390,8 +421,12 @@ getnameinfo (const struct sockaddr *sa, socklen_t addrlen, char *host,
break; break;
} }
} }
__snprintf (serv, servlen, "%d",
ntohs (((const struct sockaddr_in *) sa)->sin_port)); if (__snprintf (serv, servlen, "%d",
ntohs (((const struct sockaddr_in *) sa)->sin_port))
+ 1 > servlen)
return EAI_OVERFLOW;
break; break;
case AF_LOCAL: case AF_LOCAL: