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authorUlrich Drepper <drepper@redhat.com>2008-05-10 23:27:39 +0000
committerUlrich Drepper <drepper@redhat.com>2008-05-10 23:27:39 +0000
commit1eb946b93509b94db2bddce741f2f3b483418a6d (patch)
tree054e49d0b1be9539a0d778c4b1a6252ac4d68523 /nis/nss_nis
parenta82e8bb8d0b51d30cb0d8d24f0ff0f72066cf2ce (diff)
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* include/resolv.h: Adjust __libc_res_nquery and __libc_res_nsend
prototypes. * include/arpa/nameser_compat.h: Define T_UNSPEC. * nis/Versions (libnss_nis): Export _nss_nis_gethostbyname4_r. (libnss_nisplus): Export _nss_nisplus_gethostbyname4_r. * nis/nss_nis/nis-hosts.c (LINE_PARSER): Change to also handle af==AF_UNSPEC. (_nss_nis_gethostbyname4_r): New function. * nis/nss_nisplus/nisplus-hosts.c (_nss_nisplus_parse_hostent): Change to also handle af==AF_UNSPEC. (get_tablename): New function. Use it to avoid duplication. (_nss_nisplus_gethostbyname4_r): New function. * nscd/aicache.c (addhstaiX): Use gethostbyname4_r function is available. * nss/Versions (libnss_files): Export _nss_files_gethostbyname4_r. * nss/nss.h: Define struct gaih_addrtuple. * nss/nss_files/files-hosts.c (LINE_PARSER): Change to also handle af==AF_UNSPEC. (_nss_files_gethostbyname4_r): New function. * resolv/Versions (libnss_dns): Export _nss_dns_gethostbyname4_r. * resolv/gethnmaddr.c: Adjust __libc_res_nsearch and __libc_res_nquery calls. * resolv/res_query.c (__libc_res_nquery): Take two additional parameters for second answer buffer. Handle type=T_UNSPEC to mean look up IPv4 and IPv6. Change all callers. * resolv/res_send.c (__libc_res_nsend): Take five aditional parameters for an additional query and answer buffer. Pass to send_vc and send_dg. (send_vc): Send possibly two requests and receive two answers. (send_dg): Likewise. * resolv/nss_dns/dns-host.c: Adjust calls to __libc_res_nsearch and __libc_res_nquery. (_nss_dns_gethostbyname4_r): New function. (gaih_getanswer_slice): Likewise. (gaih_getanswer): Likewise. * resolv/nss_dns/dns-canon.c (_nss_dns_getcanonname_r): Adjust __libc_res_nquery call. * resolv/nss_dns/dns-network.c (_nss_dns_getnetbyaddr_r): Likewise. (_nss_dns_getnetbyname_r): Adjust __libc_res_nsearch call. * sysdeps/posix/getaddrinfo.c: Use gethostbyname4_r function is available.
Diffstat (limited to 'nis/nss_nis')
-rw-r--r--nis/nss_nis/nis-hosts.c118
1 files changed, 108 insertions, 10 deletions
diff --git a/nis/nss_nis/nis-hosts.c b/nis/nss_nis/nis-hosts.c
index 7bf4af7..24d1363 100644
--- a/nis/nss_nis/nis-hosts.c
+++ b/nis/nss_nis/nis-hosts.c
@@ -1,4 +1,5 @@
-/* Copyright (C) 1996-2000, 2002, 2003, 2006, 2007 Free Software Foundation, Inc.
+/* Copyright (C) 1996-2000, 2002, 2003, 2006, 2007, 2008
+ Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Thorsten Kukuk <kukuk@suse.de>, 1996.
@@ -17,6 +18,7 @@
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
+#include <assert.h>
#include <nss.h>
#include <ctype.h>
/* The following is an ugly trick to avoid a prototype declaration for
@@ -61,9 +63,12 @@ LINE_PARSER
STRING_FIELD (addr, isspace, 1);
+ assert (af == AF_INET || af == AF_INET6 || af == AF_UNSPEC);
+
/* Parse address. */
- if (af == AF_INET && inet_pton (AF_INET, addr, entdata->host_addr) > 0)
+ if (af != AF_INET6 && inet_pton (AF_INET, addr, entdata->host_addr) > 0)
{
+ assert ((flags & AI_V4MAPPED) == 0 || af != AF_UNSPEC);
if (flags & AI_V4MAPPED)
{
map_v4v6_address ((char *) entdata->host_addr,
@@ -77,7 +82,7 @@ LINE_PARSER
result->h_length = INADDRSZ;
}
}
- else if (af == AF_INET6
+ else if (af != AF_INET
&& inet_pton (AF_INET6, addr, entdata->host_addr) > 0)
{
result->h_addrtype = AF_INET6;
@@ -102,6 +107,7 @@ static bool_t new_start = 1;
static char *oldkey = NULL;
static int oldkeylen = 0;
+
enum nss_status
_nss_nis_sethostent (int stayopen)
{
@@ -124,6 +130,7 @@ _nss_nis_sethostent (int stayopen)
is used so this makes no difference. */
strong_alias (_nss_nis_sethostent, _nss_nis_endhostent)
+
/* The calling function always need to get a lock first. */
static enum nss_status
internal_nis_gethostent_r (struct hostent *host, char *buffer,
@@ -216,6 +223,7 @@ internal_nis_gethostent_r (struct hostent *host, char *buffer,
return NSS_STATUS_SUCCESS;
}
+
enum nss_status
_nss_nis_gethostent_r (struct hostent *host, char *buffer, size_t buflen,
int *errnop, int *h_errnop)
@@ -233,6 +241,7 @@ _nss_nis_gethostent_r (struct hostent *host, char *buffer, size_t buflen,
return status;
}
+
static enum nss_status
internal_gethostbyname2_r (const char *name, int af, struct hostent *host,
char *buffer, size_t buflen, int *errnop,
@@ -323,16 +332,24 @@ internal_gethostbyname2_r (const char *name, int af, struct hostent *host,
return NSS_STATUS_SUCCESS;
}
+
enum nss_status
_nss_nis_gethostbyname2_r (const char *name, int af, struct hostent *host,
char *buffer, size_t buflen, int *errnop,
int *h_errnop)
{
+ if (af != AF_INET && af != AF_INET6)
+ {
+ *h_errnop = HOST_NOT_FOUND;
+ return NSS_STATUS_NOTFOUND;
+ }
+
return internal_gethostbyname2_r (name, af, host, buffer, buflen, errnop,
h_errnop,
((_res.options & RES_USE_INET6) ? AI_V4MAPPED : 0));
}
+
enum nss_status
_nss_nis_gethostbyname_r (const char *name, struct hostent *host, char *buffer,
size_t buflen, int *errnop, int *h_errnop)
@@ -351,6 +368,7 @@ _nss_nis_gethostbyname_r (const char *name, struct hostent *host, char *buffer,
errnop, h_errnop, 0);
}
+
enum nss_status
_nss_nis_gethostbyaddr_r (const void *addr, socklen_t addrlen, int af,
struct hostent *host, char *buffer, size_t buflen,
@@ -430,13 +448,93 @@ _nss_nis_gethostbyaddr_r (const void *addr, socklen_t addrlen, int af,
return NSS_STATUS_SUCCESS;
}
-#if 0
+
enum nss_status
-_nss_nis_getipnodebyname_r (const char *name, int af, int flags,
- struct hostent *result, char *buffer,
- size_t buflen, int *errnop, int *herrnop)
+_nss_nis_gethostbyname4_r (const char *name, struct gaih_addrtuple **pat,
+ char *buffer, size_t buflen, int *errnop,
+ int *herrnop, int32_t *ttlp)
{
- return internal_gethostbyname2_r (name, af, result, buffer, buflen,
- errnop, herrnop, flags);
+ char *domain;
+ if (yp_get_default_domain (&domain))
+ return NSS_STATUS_UNAVAIL;
+
+ /* Convert name to lowercase. */
+ size_t namlen = strlen (name);
+ char name2[namlen + 1];
+ size_t i;
+
+ for (i = 0; i < namlen; ++i)
+ name2[i] = tolower (name[i]);
+ name2[i] = '\0';
+
+ char *result;
+ int len;
+ int yperr = yp_match (domain, "hosts.byname", name2, namlen, &result, &len);
+
+ if (__builtin_expect (yperr != YPERR_SUCCESS, 0))
+ {
+ enum nss_status retval = yperr2nss (yperr);
+
+ if (retval == NSS_STATUS_TRYAGAIN)
+ {
+ *herrnop = TRY_AGAIN;
+ *errnop = errno;
+ }
+ if (retval == NSS_STATUS_NOTFOUND)
+ *herrnop = HOST_NOT_FOUND;
+ return retval;
+ }
+
+ struct parser_data data;
+ struct hostent host;
+ int parse_res = parse_line (result, &host, &data, buflen, errnop, AF_UNSPEC,
+ 0);
+ if (__builtin_expect (parse_res < 1, 0))
+ {
+ if (parse_res == -1)
+ {
+ *herrnop = NETDB_INTERNAL;
+ return NSS_STATUS_TRYAGAIN;
+ }
+ else
+ {
+ *herrnop = HOST_NOT_FOUND;
+ return NSS_STATUS_NOTFOUND;
+ }
+ }
+
+ if (*pat == NULL)
+ {
+ uintptr_t pad = (-(uintptr_t) buffer
+ % __alignof__ (struct gaih_addrtuple));
+ buffer += pad;
+ buflen = buflen > pad ? buflen - pad : 0;
+
+ if (__builtin_expect (buflen < sizeof (struct gaih_addrtuple), 0))
+ {
+ erange:
+ free (result);
+ *errnop = ERANGE;
+ *herrnop = NETDB_INTERNAL;
+ return NSS_STATUS_TRYAGAIN;
+ }
+
+ *pat = (struct gaih_addrtuple *) buffer;
+ buffer += sizeof (struct gaih_addrtuple);
+ buflen -= sizeof (struct gaih_addrtuple);
+ }
+
+ (*pat)->next = NULL;
+ size_t h_name_len = strlen (host.h_name);
+ if (h_name_len >= buflen)
+ goto erange;
+ (*pat)->name = memcpy (buffer, host.h_name, h_name_len + 1);
+ (*pat)->family = host.h_addrtype;
+ memcpy ((*pat)->addr, host.h_addr_list[0], host.h_length);
+ (*pat)->scopeid = 0;
+ assert (host.h_addr_list[1] == NULL);
+
+ free (result);
+
+ return NSS_STATUS_SUCCESS;
}
-#endif