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Update.
* inet/Makefile (routines): Add getipnodebyad and freehostent. * inet/Versions [GLIBC_2.2] (libc): Add getipnodebyad and freehostent. * inet/freehostent.c: New file. * inet/getipnodebyad.c: New file. * nss/digits_dots.c: Fail if IPv6 is found and IPv4 is requested. Add support for getipnode* functions. * nss/digits_dots.c: Don't use __set_h_errno, assign to *h_errnop. Set h_aliases to NULL and not to a pointer to an array with a NULL pointer following XNS 5.2.
This commit is contained in:
Ulrich Drepper
parent
b74c71e87f
commit
a553168f1e
11
ChangeLog
11
ChangeLog
@ -1,5 +1,16 @@
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1999-07-18 Ulrich Drepper <drepper@cygnus.com>
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* inet/Makefile (routines): Add getipnodebyad and freehostent.
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* inet/Versions [GLIBC_2.2] (libc): Add getipnodebyad and freehostent.
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* inet/freehostent.c: New file.
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* inet/getipnodebyad.c: New file.
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* nss/digits_dots.c: Fail if IPv6 is found and IPv4 is requested.
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Add support for getipnode* functions.
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* nss/digits_dots.c: Don't use __set_h_errno, assign to *h_errnop.
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Set h_aliases to NULL and not to a pointer to an array with a NULL
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pointer following XNS 5.2.
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* posix/sched.h: Remove internal interfaces.
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* include/sched.h: Add internal interfaces.
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@ -45,7 +45,7 @@ routines := htonl htons \
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rcmd rexec ruserpass \
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getnetgrent_r getnetgrent \
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getaliasent_r getaliasent getaliasname getaliasname_r \
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in6_addr getnameinfo if_index
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in6_addr getnameinfo if_index getipnodebyad freehostent
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tests := htontest test_ifindex tst-ntoa tst-ether_aton
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@ -62,4 +62,10 @@ libc {
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getprotoent_r; getrpcbyname_r; getrpcbynumber_r; getrpcent_r;
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getservbyname_r;
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}
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GLIBC_2.2 {
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# f*
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freehostent;
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# g*
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getipnodebyaddr;
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}
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}
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27
inet/freehostent.c
Normal file
27
inet/freehostent.c
Normal file
@ -0,0 +1,27 @@
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/* Copyright (C) 1999 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <netdb.h>
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#include <stdlib.h>
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void
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freehostent (struct hostent *ptr)
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{
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free (ptr);
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}
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59
inet/getipnodebyad.c
Normal file
59
inet/getipnodebyad.c
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@ -0,0 +1,59 @@
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/* Copyright (C) 1999 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <assert.h>
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#include <errno.h>
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#include <netdb.h>
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#include <stdlib.h>
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#include "nsswitch.h"
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/* We avoid using a too large buffer in case the user is accumulating the
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results and there is lots of unused space in the allocated buffer. */
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#define BUFLEN 512
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struct hostent *
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getipnodebyaddr (const char *addr, size_t len, int type, int *error_num)
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{
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size_t buffer_size;
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char *buffer;
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struct hostent *result;
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buffer_size = BUFLEN;
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buffer = malloc (buffer_size);
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while (buffer != NULL
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&& __gethostbyaddr_r (addr, len, type, (struct hostent *) buffer,
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(char *) ((struct hostent *) buffer + 1),
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buffer_size - sizeof (struct hostent),
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&result, error_num) == ERANGE
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&& *error_num == NETDB_INTERNAL)
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{
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buffer_size += BUFLEN;
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buffer = realloc (buffer, buffer_size);
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if (buffer == NULL)
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{
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*error_num = TRY_AGAIN;
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assert (result == NULL);
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return NULL;
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}
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}
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return buffer == NULL ? NULL : result;
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}
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@ -28,13 +28,15 @@
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typedef unsigned char host_addr_t [16];
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host_addr_t *host_addr;
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typedef char *host_addr_list_t [2];
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host_addr_list_t *host_aliases;
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host_addr_list_t *h_addr_ptrs;
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size_t size_needed;
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int addr_size;
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#ifndef HAVE_AF
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int af = -1;
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#endif
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#ifdef HAVE_TYPE
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int af = type;
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#endif
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switch (af)
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{
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@ -47,18 +49,26 @@
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break;
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default:
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#ifdef HAVE_TYPE
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/* This must not happen. */
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*h_errnop = HOST_NOT_FOUND;
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goto done;
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#else
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af = (_res.options & RES_USE_INET6) ? AF_INET6 : AF_INET;
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addr_size = af == AF_INET6 ? IN6ADDRSZ : INADDRSZ;
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break;
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#endif
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}
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size_needed = (sizeof (*host_addr)
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+ sizeof (*host_aliases) + sizeof (*h_addr_ptrs)
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+ strlen (name) + 1);
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+ sizeof (*h_addr_ptrs) + strlen (name) + 1);
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#ifdef HAVE_LOOKUP_BUFFER
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if (buflen < size_needed)
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{
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# ifdef NEED_H_ERRNO
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*h_errnop = TRY_AGAIN;
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# endif
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__set_errno (ERANGE);
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goto done;
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}
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@ -89,10 +99,8 @@
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memset (buffer, 0, size_needed);
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host_addr = (host_addr_t *) buffer;
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host_aliases = (host_addr_list_t *)
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((char *) host_addr + sizeof (*host_addr));
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h_addr_ptrs = (host_addr_list_t *)
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((char *) host_aliases + sizeof (*host_aliases));
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((char *) host_addr + sizeof (*host_addr));
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hostname = (char *) h_addr_ptrs + sizeof (*h_addr_ptrs);
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if (isdigit (name[0]))
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@ -119,7 +127,7 @@
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}
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if (! ok)
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{
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__set_h_errno (HOST_NOT_FOUND);
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*h_errnop = HOST_NOT_FOUND;
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#ifndef HAVE_LOOKUP_BUFFER
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result = (struct hostent *) NULL;
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#endif
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@ -127,12 +135,29 @@
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}
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resbuf.h_name = strcpy (hostname, name);
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resbuf.h_aliases = *host_aliases;
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(*host_aliases)[0] = NULL;
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resbuf.h_aliases = NULL;
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(*h_addr_ptrs)[0] = (char *)host_addr;
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(*h_addr_ptrs)[1] = (char *)0;
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resbuf.h_addr_list = *h_addr_ptrs;
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if (_res.options & RES_USE_INET6 && af == AF_INET)
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if (
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#ifdef HAVE_TYPE
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type == AF_INET6
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#else
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af == AF_INET && (_res.options & RES_USE_INET6)
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#endif
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)
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{
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#ifdef HAVE_TYPE
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if ((flags & AI_V4MAPPED) == 0)
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{
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/* That's bad. The user hasn't specified that she
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allows IPv4 numeric addresses. */
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result = NULL;
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*herrno_p = HOST_NOT_FOUND;
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goto done;
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}
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else
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#endif
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{
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/* We need to change the IP v4 address into the
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IP v6 address. */
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@ -151,12 +176,13 @@
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resbuf.h_addrtype = AF_INET6;
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resbuf.h_length = IN6ADDRSZ;
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}
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}
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else
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{
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resbuf.h_addrtype = af;
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resbuf.h_length = addr_size;
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}
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__set_h_errno (NETDB_SUCCESS);
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*h_errnop = NETDB_SUCCESS;
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#ifdef HAVE_LOOKUP_BUFFER
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status = NSS_STATUS_SUCCESS;
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#else
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@ -177,37 +203,48 @@
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typedef unsigned char host_addr_t [16];
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host_addr_t *host_addr;
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typedef char *host_addr_list_t [2];
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host_addr_list_t *host_aliases;
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host_addr_list_t *h_addr_ptrs;
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size_t size_needed;
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int addr_size;
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#ifndef HAVE_AF
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int af = -1;
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#endif
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#ifdef HAVE_TYPE
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int af = type;
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#endif
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switch (af)
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{
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case AF_INET:
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addr_size = INADDRSZ;
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default:
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af = (_res.options & RES_USE_INET6) ? AF_INET6 : AF_INET;
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if (af == AF_INET6)
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{
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addr_size = IN6ADDRSZ;
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break;
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}
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/* FALLTHROUGH */
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case AF_INET:
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/* This is not possible. We cannot represent an IPv6 address
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in an `struct in_addr' variable. */
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*h_errnop = HOST_NOT_FOUND;
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result = NULL;
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goto done;
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case AF_INET6:
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addr_size = IN6ADDRSZ;
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break;
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default:
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af = (_res.options & RES_USE_INET6) ? AF_INET6 : AF_INET;
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addr_size = (af == AF_INET6 ) ? IN6ADDRSZ : INADDRSZ;
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break;
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}
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size_needed = (sizeof (*host_addr)
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+ sizeof (*host_aliases) + sizeof (*h_addr_ptrs)
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+ strlen (name) + 1);
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+ sizeof (*h_addr_ptrs) + strlen (name) + 1);
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#ifdef HAVE_LOOKUP_BUFFER
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if (buflen < size_needed)
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{
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# ifdef NEED_H_ERRNO
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*h_errnop = TRY_AGAIN;
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# endif
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__set_errno (ERANGE);
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goto done;
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}
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@ -235,10 +272,8 @@
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memset (buffer, 0, size_needed);
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host_addr = (host_addr_t *) buffer;
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host_aliases = (host_addr_list_t *)
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((char *) host_addr + sizeof (*host_addr));
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h_addr_ptrs = (host_addr_list_t *)
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((char *) host_aliases + sizeof (*host_aliases));
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((char *) host_addr + sizeof (*host_addr));
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hostname = (char *) h_addr_ptrs + sizeof (*h_addr_ptrs);
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for (cp = name;; ++cp)
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@ -250,9 +285,9 @@
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/* All-IPv6-legal, no dot at the end. Fake up a
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hostent as if we'd actually done a lookup. */
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if (inet_pton (af, name, host_addr) <= 0)
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if (inet_pton (AF_INET6, name, host_addr) <= 0)
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{
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__set_h_errno (HOST_NOT_FOUND);
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*h_errnop = HOST_NOT_FOUND;
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#ifndef HAVE_LOOKUP_BUFFER
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result = (struct hostent *) NULL;
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#endif
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@ -260,14 +295,13 @@
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}
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resbuf.h_name = strcpy (hostname, name);
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resbuf.h_aliases = *host_aliases;
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(*host_aliases)[0] = NULL;
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resbuf.h_aliases = NULL;
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(*h_addr_ptrs)[0] = (char *) host_addr;
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(*h_addr_ptrs)[1] = (char *) 0;
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resbuf.h_addr_list = *h_addr_ptrs;
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resbuf.h_addrtype = af;
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resbuf.h_addrtype = AF_INET6;
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resbuf.h_length = addr_size;
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__set_h_errno (NETDB_SUCCESS);
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*h_errnop = NETDB_SUCCESS;
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#ifdef HAVE_LOOKUP_BUFFER
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status = NSS_STATUS_SUCCESS;
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#else
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