The Tor Browser: ipc/chromium/src/third_party/libevent/strlcpy.c@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /*	$OpenBSD: strlcpy.c,v 1.5 2001/05/13 15:40:16 deraadt Exp $	*/

     3 /*

     4  * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>

     5  * All rights reserved.

     6  *

     7  * Redistribution and use in source and binary forms, with or without

     8  * modification, are permitted provided that the following conditions

     9  * are met:

    10  * 1. Redistributions of source code must retain the above copyright

    11  *    notice, this list of conditions and the following disclaimer.

    12  * 2. Redistributions in binary form must reproduce the above copyright

    13  *    notice, this list of conditions and the following disclaimer in the

    14  *    documentation and/or other materials provided with the distribution.

    15  * 3. The name of the author may not be used to endorse or promote products

    16  *    derived from this software without specific prior written permission.

    17  *

    18  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,

    19  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY

    20  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL

    21  * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

    22  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

    23  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;

    24  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,

    25  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR

    26  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF

    27  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    28  */

    30 #if defined(LIBC_SCCS) && !defined(lint)

    31 static char *rcsid = "$OpenBSD: strlcpy.c,v 1.5 2001/05/13 15:40:16 deraadt Exp $";

    32 #endif /* LIBC_SCCS and not lint */

    34 #include <sys/types.h>

    36 #include "event2/event-config.h"

    38 #ifndef _EVENT_HAVE_STRLCPY

    39 #include "strlcpy-internal.h"

    41 /*

    42  * Copy src to string dst of size siz.  At most siz-1 characters

    43  * will be copied.  Always NUL terminates (unless siz == 0).

    44  * Returns strlen(src); if retval >= siz, truncation occurred.

    45  */

    46 size_t

    47 _event_strlcpy(dst, src, siz)

    48 	char *dst;

    49 	const char *src;

    50 	size_t siz;

    51 {

    52 	register char *d = dst;

    53 	register const char *s = src;

    54 	register size_t n = siz;

    56 	/* Copy as many bytes as will fit */

    57 	if (n != 0 && --n != 0) {

    58 		do {

    59 			if ((*d++ = *s++) == 0)

    60 				break;

    61 		} while (--n != 0);

    62 	}

    64 	/* Not enough room in dst, add NUL and traverse rest of src */

    65 	if (n == 0) {

    66 		if (siz != 0)

    67 			*d = '\0';		/* NUL-terminate dst */

    68 		while (*s++)

    69 			;

    70 	}

    72 	return (s - src - 1);	/* count does not include NUL */

    73 }

    74 #endif

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