From 45d6379135504814ab723b57f0eb8be23393a51d Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 09:24:22 +0200 Subject: Adding upstream version 1:9.16.44. Signed-off-by: Daniel Baumann --- lib/isc/string.c | 149 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 149 insertions(+) create mode 100644 lib/isc/string.c (limited to 'lib/isc/string.c') diff --git a/lib/isc/string.c b/lib/isc/string.c new file mode 100644 index 0000000..5de6d88 --- /dev/null +++ b/lib/isc/string.c @@ -0,0 +1,149 @@ +/* + * Copyright (C) Internet Systems Consortium, Inc. ("ISC") + * + * SPDX-License-Identifier: MPL-2.0 + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, you can obtain one at https://mozilla.org/MPL/2.0/. + * + * See the COPYRIGHT file distributed with this work for additional + * information regarding copyright ownership. + */ + +/* + * SPDX-License-Identifier: BSD-3-Clause + * + * Copyright (c) 2001 Mike Barcroft + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/*! \file */ + +#ifdef _GNU_SOURCE +#undef _GNU_SOURCE +#endif /* ifdef _GNU_SOURCE */ +#include + +#include /* IWYU pragma: keep */ +#include + +#if !defined(HAVE_STRLCPY) +size_t +strlcpy(char *dst, const char *src, size_t size) { + char *d = dst; + const char *s = src; + size_t n = size; + + /* Copy as many bytes as will fit */ + if (n != 0U && --n != 0U) { + do { + if ((*d++ = *s++) == 0) { + break; + } + } while (--n != 0U); + } + + /* Not enough room in dst, add NUL and traverse rest of src */ + if (n == 0U) { + if (size != 0U) { + *d = '\0'; /* NUL-terminate dst */ + } + while (*s++) { + } + } + + return (s - src - 1); /* count does not include NUL */ +} +#endif /* !defined(HAVE_STRLCPY) */ + +#if !defined(HAVE_STRLCAT) +size_t +strlcat(char *dst, const char *src, size_t size) { + char *d = dst; + const char *s = src; + size_t n = size; + size_t dlen; + + /* Find the end of dst and adjust bytes left but don't go past end */ + while (n-- != 0U && *d != '\0') { + d++; + } + dlen = d - dst; + n = size - dlen; + + if (n == 0U) { + return (dlen + strlen(s)); + } + while (*s != '\0') { + if (n != 1U) { + *d++ = *s; + n--; + } + s++; + } + *d = '\0'; + + return (dlen + (s - src)); /* count does not include NUL */ +} +#endif /* !defined(HAVE_STRLCAT) */ + +#if !defined(HAVE_STRNSTR) +char * +strnstr(const char *s, const char *find, size_t slen) { + char c, sc, *r; + size_t len; + + if ((c = *find++) != '\0') { + len = strlen(find); + do { + do { + if (slen-- < 1 || (sc = *s++) == '\0') + return (NULL); + } while (sc != c); + if (len > slen) + return (NULL); + } while (strncmp(s, find, len) != 0); + s--; + } + DE_CONST(s, r); + return (r); +} +#endif + +int +isc_string_strerror_r(int errnum, char *buf, size_t buflen) { +#if defined(_WIN32) || defined(_WIN64) + return (strerror_s(buf, buflen, errnum)); +#else /* if defined(_WIN32) || defined(_WIN64) */ + return (strerror_r(errnum, buf, buflen)); +#endif /* if defined(_WIN32) || defined(_WIN64) */ +} -- cgit v1.2.3