mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-09 04:11:27 +08:00
5656e2948f
* elf/dl-profstub.c (_dl_mcount_wrapper_check): Add libc_hidden_def. * include/grp.h (_nss_files_parse_grent): Add libc_hidden_proto. * include/netinet/ether.h (_nss_files_parse_etherent): Likewise. * include/rpc/netdb.h (_nss_files_parse_rpcent): Likewise. * include/pwd.h (_nss_files_parse_pwent): Likewise. * include/shadow.h (_nss_files_parse_spent): Likewise. * include/netdb.h (_nss_files_parse_protoent, _nss_files_parse_servent, _nss_files_parse_netent): Likewise. * nss/nss_files/files-parse.c (nss_files_parse_hidden_def): Define. (LINE_PARSER): Use it. * nss/nsswitch.h (__nss_hostname_digits_dots): Add libc_hidden_proto. * nss/digits_dots.c (__nss_hostname_digits_dots): Add libc_hidden_def. * include/wctype.h (iswalpha, iswdigit, iswlower, iswspace, iswxdigit, towlower, towupper): Add prototypes here too. Add libc_hidden_proto. * wctype/wcfuncs ((iswalpha, iswdigit, iswlower, iswspace, iswxdigit, towlower, towupper): Add libc_hidden_weak. * libio/oldiopopen.c: Move #if SHLIB_COMPAT after _IO_HAVE_SYS_WAIT #endif. * manual/debug.texi (%MENU%): Remove trailing dot. Reported by <hayastan132@hotmail.com>.
358 lines
8.4 KiB
C
358 lines
8.4 KiB
C
/* Copyright (C) 1997, 1999, 2000, 2001 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by H.J. Lu <hjl@gnu.ai.mit.edu>, 1997.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <assert.h>
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <ctype.h>
|
|
#include <wctype.h>
|
|
#include <resolv.h>
|
|
#include <netdb.h>
|
|
#include <arpa/inet.h>
|
|
#include "nsswitch.h"
|
|
|
|
#ifdef USE_NSCD
|
|
# define inet_aton __inet_aton
|
|
# include <nscd/nscd_proto.h>
|
|
#endif
|
|
|
|
int
|
|
__nss_hostname_digits_dots (const char *name, struct hostent *resbuf,
|
|
char **buffer, size_t *buffer_size,
|
|
size_t buflen, struct hostent **result,
|
|
enum nss_status *status, int *typep,
|
|
int flags, int *afp, int *h_errnop)
|
|
{
|
|
int save;
|
|
|
|
/* We have to test for the use of IPv6 which can only be done by
|
|
examining `_res'. */
|
|
if ((_res.options & RES_INIT) == 0 && __res_ninit (&_res) == -1)
|
|
{
|
|
if (h_errnop)
|
|
*h_errnop = NETDB_INTERNAL;
|
|
*result = NULL;
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* disallow names consisting only of digits/dots, unless
|
|
* they end in a dot.
|
|
*/
|
|
if (isdigit (name[0]) || isxdigit (name[0]) || name[0] == ':')
|
|
{
|
|
const char *cp;
|
|
char *hostname;
|
|
typedef unsigned char host_addr_t[16];
|
|
host_addr_t *host_addr;
|
|
typedef char *host_addr_list_t[2];
|
|
host_addr_list_t *h_addr_ptrs;
|
|
char **h_alias_ptr;
|
|
size_t size_needed;
|
|
int addr_size;
|
|
int af;
|
|
|
|
if (typep != NULL)
|
|
af = *typep;
|
|
else if (afp != NULL)
|
|
af = *afp;
|
|
else
|
|
af = -1;
|
|
|
|
switch (af)
|
|
{
|
|
case AF_INET:
|
|
addr_size = INADDRSZ;
|
|
break;
|
|
|
|
case AF_INET6:
|
|
addr_size = IN6ADDRSZ;
|
|
break;
|
|
|
|
default:
|
|
if (typep != NULL)
|
|
{
|
|
/* This must not happen. */
|
|
if (h_errnop != NULL)
|
|
*h_errnop = HOST_NOT_FOUND;
|
|
goto done;
|
|
}
|
|
else
|
|
{
|
|
af = (_res.options & RES_USE_INET6) ? AF_INET6 : AF_INET;
|
|
addr_size = af == AF_INET6 ? IN6ADDRSZ : INADDRSZ;
|
|
}
|
|
break;
|
|
}
|
|
|
|
size_needed = (sizeof (*host_addr)
|
|
+ sizeof (*h_addr_ptrs) + strlen (name) + 1);
|
|
|
|
if (buffer_size == NULL)
|
|
{
|
|
if (buflen < size_needed)
|
|
{
|
|
if (h_errnop != NULL)
|
|
*h_errnop = TRY_AGAIN;
|
|
__set_errno (ERANGE);
|
|
goto done;
|
|
}
|
|
}
|
|
else if (buffer_size != NULL && *buffer_size < size_needed)
|
|
{
|
|
char *new_buf;
|
|
*buffer_size = size_needed;
|
|
new_buf = (char *) realloc (*buffer, *buffer_size);
|
|
|
|
if (new_buf == NULL)
|
|
{
|
|
save = errno;
|
|
free (*buffer);
|
|
*buffer = NULL;
|
|
*buffer_size = 0;
|
|
__set_errno (save);
|
|
if (h_errnop != NULL)
|
|
*h_errnop = TRY_AGAIN;
|
|
*result = NULL;
|
|
goto done;
|
|
}
|
|
*buffer = new_buf;
|
|
}
|
|
|
|
memset (*buffer, '\0', size_needed);
|
|
|
|
host_addr = (host_addr_t *) *buffer;
|
|
h_addr_ptrs = (host_addr_list_t *)
|
|
((char *) host_addr + sizeof (*host_addr));
|
|
h_alias_ptr = (char **) ((char *) h_addr_ptrs + sizeof (*h_addr_ptrs));
|
|
hostname = (char *) h_alias_ptr + sizeof (*h_alias_ptr);
|
|
|
|
if (isdigit (name[0]))
|
|
{
|
|
for (cp = name;; ++cp)
|
|
{
|
|
if (*cp == '\0')
|
|
{
|
|
int ok;
|
|
|
|
if (*--cp == '.')
|
|
break;
|
|
|
|
/* All-numeric, no dot at the end. Fake up a hostent as if
|
|
we'd actually done a lookup. What if someone types
|
|
255.255.255.255? The test below will succeed
|
|
spuriously... ??? */
|
|
if (af == AF_INET)
|
|
ok = __inet_aton (name, (struct in_addr *) host_addr);
|
|
else
|
|
{
|
|
assert (af == AF_INET6);
|
|
ok = inet_pton (af, name, host_addr) > 0;
|
|
}
|
|
if (! ok)
|
|
{
|
|
*h_errnop = HOST_NOT_FOUND;
|
|
if (buffer_size)
|
|
*result = NULL;
|
|
goto done;
|
|
}
|
|
|
|
resbuf->h_name = strcpy (hostname, name);
|
|
h_alias_ptr[0] = NULL;
|
|
resbuf->h_aliases = h_alias_ptr;
|
|
(*h_addr_ptrs)[0] = (char *) host_addr;
|
|
(*h_addr_ptrs)[1] = NULL;
|
|
resbuf->h_addr_list = *h_addr_ptrs;
|
|
if ((typep != NULL && *typep == AF_INET6)
|
|
|| (af == AF_INET
|
|
&& (_res.options & RES_USE_INET6)))
|
|
{
|
|
if (typep != NULL && (flags & AI_V4MAPPED) == 0)
|
|
{
|
|
/* That's bad. The user hasn't specified that she
|
|
allows IPv4 numeric addresses. */
|
|
*result = NULL;
|
|
*h_errnop = HOST_NOT_FOUND;
|
|
goto done;
|
|
}
|
|
else
|
|
{
|
|
/* We need to change the IP v4 address into the
|
|
IP v6 address. */
|
|
char tmp[INADDRSZ];
|
|
char *p = (char *) host_addr;
|
|
int i;
|
|
|
|
/* Save a copy of the IP v4 address. */
|
|
memcpy (tmp, host_addr, INADDRSZ);
|
|
/* Mark this ipv6 addr as a mapped ipv4. */
|
|
for (i = 0; i < 10; i++)
|
|
*p++ = 0x00;
|
|
*p++ = 0xff;
|
|
*p++ = 0xff;
|
|
/* Copy the IP v4 address. */
|
|
memcpy (p, tmp, INADDRSZ);
|
|
resbuf->h_addrtype = AF_INET6;
|
|
resbuf->h_length = IN6ADDRSZ;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
resbuf->h_addrtype = af;
|
|
resbuf->h_length = addr_size;
|
|
}
|
|
if (h_errnop != NULL)
|
|
*h_errnop = NETDB_SUCCESS;
|
|
if (buffer_size == NULL)
|
|
*status = NSS_STATUS_SUCCESS;
|
|
else
|
|
*result = resbuf;
|
|
goto done;
|
|
}
|
|
|
|
if (!isdigit (*cp) && *cp != '.')
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ((isxdigit (name[0]) && strchr (name, ':') != NULL) || name[0] == ':')
|
|
{
|
|
const char *cp;
|
|
char *hostname;
|
|
typedef unsigned char host_addr_t[16];
|
|
host_addr_t *host_addr;
|
|
typedef char *host_addr_list_t[2];
|
|
host_addr_list_t *h_addr_ptrs;
|
|
size_t size_needed;
|
|
int addr_size;
|
|
int af;
|
|
|
|
if (typep != NULL)
|
|
af = *typep;
|
|
else if (afp != NULL)
|
|
af = *afp;
|
|
else
|
|
af = -1;
|
|
|
|
switch (af)
|
|
{
|
|
default:
|
|
af = (_res.options & RES_USE_INET6) ? AF_INET6 : AF_INET;
|
|
if (af == AF_INET6)
|
|
{
|
|
addr_size = IN6ADDRSZ;
|
|
break;
|
|
}
|
|
/* FALLTHROUGH */
|
|
|
|
case AF_INET:
|
|
/* This is not possible. We cannot represent an IPv6 address
|
|
in an `struct in_addr' variable. */
|
|
*h_errnop = HOST_NOT_FOUND;
|
|
*result = NULL;
|
|
goto done;
|
|
|
|
case AF_INET6:
|
|
addr_size = IN6ADDRSZ;
|
|
break;
|
|
}
|
|
|
|
size_needed = (sizeof (*host_addr)
|
|
+ sizeof (*h_addr_ptrs) + strlen (name) + 1);
|
|
|
|
if (buffer_size == NULL && buflen < size_needed)
|
|
{
|
|
if (h_errnop != NULL)
|
|
*h_errnop = TRY_AGAIN;
|
|
__set_errno (ERANGE);
|
|
goto done;
|
|
}
|
|
else if (buffer_size != NULL && *buffer_size < size_needed)
|
|
{
|
|
char *new_buf;
|
|
*buffer_size = size_needed;
|
|
new_buf = realloc (*buffer, *buffer_size);
|
|
|
|
if (new_buf == NULL)
|
|
{
|
|
save = errno;
|
|
free (*buffer);
|
|
__set_errno (save);
|
|
*buffer = NULL;
|
|
*buffer_size = 0;
|
|
*result = NULL;
|
|
goto done;
|
|
}
|
|
*buffer = new_buf;
|
|
}
|
|
|
|
memset (*buffer, '\0', size_needed);
|
|
|
|
host_addr = (host_addr_t *) *buffer;
|
|
h_addr_ptrs = (host_addr_list_t *)
|
|
((char *) host_addr + sizeof (*host_addr));
|
|
hostname = (char *) h_addr_ptrs + sizeof (*h_addr_ptrs);
|
|
|
|
for (cp = name;; ++cp)
|
|
{
|
|
if (!*cp)
|
|
{
|
|
if (*--cp == '.')
|
|
break;
|
|
|
|
/* All-IPv6-legal, no dot at the end. Fake up a
|
|
hostent as if we'd actually done a lookup. */
|
|
if (inet_pton (AF_INET6, name, host_addr) <= 0)
|
|
{
|
|
*h_errnop = HOST_NOT_FOUND;
|
|
if (buffer_size)
|
|
*result = NULL;
|
|
goto done;
|
|
}
|
|
|
|
resbuf->h_name = strcpy (hostname, name);
|
|
h_alias_ptr[0] = NULL;
|
|
resbuf->h_aliases = h_alias_ptr;
|
|
(*h_addr_ptrs)[0] = (char *) host_addr;
|
|
(*h_addr_ptrs)[1] = (char *) 0;
|
|
resbuf->h_addr_list = *h_addr_ptrs;
|
|
resbuf->h_addrtype = AF_INET6;
|
|
resbuf->h_length = addr_size;
|
|
*h_errnop = NETDB_SUCCESS;
|
|
if (buffer_size == NULL)
|
|
*status = NSS_STATUS_SUCCESS;
|
|
else
|
|
*result = resbuf;
|
|
goto done;
|
|
}
|
|
|
|
if (!isxdigit (*cp) && *cp != ':' && *cp != '.')
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
|
|
done:
|
|
return 1;
|
|
}
|
|
libc_hidden_def (__nss_hostname_digits_dots)
|