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path: root/newlib/libc/sys/linux/net/digits_dots.c
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Diffstat (limited to 'newlib/libc/sys/linux/net/digits_dots.c')
-rw-r--r--newlib/libc/sys/linux/net/digits_dots.c317
1 files changed, 0 insertions, 317 deletions
diff --git a/newlib/libc/sys/linux/net/digits_dots.c b/newlib/libc/sys/linux/net/digits_dots.c
deleted file mode 100644
index 9576dd53b..000000000
--- a/newlib/libc/sys/linux/net/digits_dots.c
+++ /dev/null
@@ -1,317 +0,0 @@
-/* Copyright (C) 1997, 1999, 2000, 2001, 2004 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 af, int *h_errnop)
-{
- int save;
-
- /* We have to test for the use of IPv6 which can only be done by
- examining `_res'. */
- if (__res_maybe_init (&_res, 0) == -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;
-
- switch (af)
- {
- case AF_INET:
- addr_size = INADDRSZ;
- break;
-
- case AF_INET6:
- addr_size = IN6ADDRSZ;
- break;
-
- default:
- 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 (af == AF_INET && (_res.options & RES_USE_INET6))
- {
- /* 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;
-
- 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)
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-17 01:30:55 +0300