62 lines
1.5 KiB
C
62 lines
1.5 KiB
C
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/* Copyright (c) 1997-2022 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 Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the 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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <string.h>
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#include <rpcsvc/nis.h>
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#include <shlib-compat.h>
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nis_name
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nis_domain_of_r (const_nis_name name, char *buffer, size_t buflen)
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{
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char *cptr;
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size_t cptr_len;
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if (buffer == NULL)
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{
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erange:
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__set_errno (ERANGE);
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return NULL;
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}
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buffer[0] = '\0';
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cptr = strchr (name, '.');
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if (cptr == NULL)
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return buffer;
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++cptr;
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cptr_len = strlen (cptr);
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if (cptr_len == 0)
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{
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if (buflen < 2)
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goto erange;
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return strcpy (buffer, ".");
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}
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if (__glibc_unlikely (cptr_len >= buflen))
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{
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__set_errno (ERANGE);
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return NULL;
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}
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return memcpy (buffer, cptr, cptr_len + 1);
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}
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libnsl_hidden_nolink_def (nis_domain_of_r, GLIBC_2_1)
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