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108bc4049f
The IPv4 address parser in the getaddrinfo function is changed so that
it does not ignore trailing whitespace and all characters after it.
For backwards compatibility, the getaddrinfo function still recognizes
legacy name syntax, such as 192.000.002.010 interpreted as 192.0.2.8
(octal).
This commit does not change the behavior of inet_addr and inet_aton.
gethostbyname already had additional sanity checks (but is switched
over to the new __inet_aton_exact function for completeness as well).
To avoid sending the problematic query names over DNS, commit
6ca53a2453 ("resolv: Do not send queries
for non-host-names in nss_dns [BZ #24112]") is needed.
54 lines
1.7 KiB
C
54 lines
1.7 KiB
C
/* Copyright (C) 1996-2019 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published
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by the Free Software Foundation; version 2 of the License, or
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(at your option) any later version.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>. */
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#include <ctype.h>
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#include <errno.h>
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#include <netdb.h>
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#include <string.h>
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#include <arpa/inet.h>
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#include <netinet/in.h>
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#define LOOKUP_TYPE struct hostent
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#define FUNCTION_NAME gethostbyname3
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#define FUNCTION2_NAME gethostbyname2
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#define DATABASE_NAME hosts
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#define ADD_PARAMS const char *name, int af
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#define EXTRA_PARAMS , int32_t *ttlp, char **canonp
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#define ADD_VARIABLES name, af
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#define EXTRA_VARIABLES , ttlp, canonp
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#define NEED_H_ERRNO 1
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#define NEED__RES 1
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#define HANDLE_DIGITS_DOTS 1
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#define HAVE_LOOKUP_BUFFER 1
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#define HAVE_AF 1
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/* We are nscd, so we don't want to be talking to ourselves. */
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#undef USE_NSCD
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#include "../nss/getXXbyYY_r.c"
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int
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__gethostbyname2_r (const char *name, int af, struct hostent *ret, char *buf,
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size_t buflen, struct hostent **result, int *h_errnop)
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{
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return __gethostbyname3_r (name, af, ret, buf, buflen, result, h_errnop,
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NULL, NULL);
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}
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