scribo

Email-based phlog generator
git clone git://git.z3bra.org/scribo.git
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commit 37e8d4f3e903d7e5ff317d317168b7ab49d7c171
parent c80c9cf06a1244d9815493a9844efa6dbd1140e8
Author: Willy Goiffon <dev@z3bra.org>
Date:   Mon,  7 Sep 2020 17:08:08 +0200

Add working copy of strlcpy(3)

Diffstat:
Mmakefile | 2+-
Astrlcpy.c | 56++++++++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 57 insertions(+), 1 deletion(-)

diff --git a/makefile b/makefile @@ -2,7 +2,7 @@ include config.mk .SUFFIXES: .h .def.h -scribo: scribo.o rfc5322.o +scribo: scribo.o rfc5322.o strlcpy.o scribo.o: config.h .def.h.h: diff --git a/strlcpy.c b/strlcpy.c @@ -0,0 +1,56 @@ +/* NOTE: This code was adapted from openbsd-compat/strlcpy.c in OpenSSH */ + +/* $OpenBSD: strlcpy.c,v 1.11 2006/05/05 15:27:38 millert Exp $ */ + +/* + * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +/* OPENBSD ORIGINAL: lib/libc/string/strlcpy.c */ + +#include <sys/types.h> +#include <string.h> + +/* + * Copy src to string dst of size siz. At most siz-1 characters + * will be copied. Always NUL terminates (unless siz == 0). + * Returns strlen(src); if retval >= siz, truncation occurred. + */ +size_t +strlcpy(char *dst, const char *src, size_t siz) +{ + char *d = dst; + const char *s = src; + size_t n = siz; + + /* Copy as many bytes as will fit */ + if (n != 0) { + while (--n != 0) { + if ((*d++ = *s++) == '\0') + break; + } + } + + /* Not enough room in dst, add NUL and traverse rest of src */ + if (n == 0) { + if (siz != 0) + *d = '\0'; /* NUL-terminate dst */ + while (*s++) + ; + } + + return(s - src - 1); /* count does not include NUL */ +} +