1*2b15cb3dSCy Schubert /* $OpenBSD: strlcpy.c,v 1.5 2001/05/13 15:40:16 deraadt Exp $ */ 2*2b15cb3dSCy Schubert 3*2b15cb3dSCy Schubert /* 4*2b15cb3dSCy Schubert * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com> 5*2b15cb3dSCy Schubert * All rights reserved. 6*2b15cb3dSCy Schubert * 7*2b15cb3dSCy Schubert * Redistribution and use in source and binary forms, with or without 8*2b15cb3dSCy Schubert * modification, are permitted provided that the following conditions 9*2b15cb3dSCy Schubert * are met: 10*2b15cb3dSCy Schubert * 1. Redistributions of source code must retain the above copyright 11*2b15cb3dSCy Schubert * notice, this list of conditions and the following disclaimer. 12*2b15cb3dSCy Schubert * 2. Redistributions in binary form must reproduce the above copyright 13*2b15cb3dSCy Schubert * notice, this list of conditions and the following disclaimer in the 14*2b15cb3dSCy Schubert * documentation and/or other materials provided with the distribution. 15*2b15cb3dSCy Schubert * 3. The name of the author may not be used to endorse or promote products 16*2b15cb3dSCy Schubert * derived from this software without specific prior written permission. 17*2b15cb3dSCy Schubert * 18*2b15cb3dSCy Schubert * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, 19*2b15cb3dSCy Schubert * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY 20*2b15cb3dSCy Schubert * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 21*2b15cb3dSCy Schubert * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 22*2b15cb3dSCy Schubert * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 23*2b15cb3dSCy Schubert * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 24*2b15cb3dSCy Schubert * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 25*2b15cb3dSCy Schubert * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 26*2b15cb3dSCy Schubert * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 27*2b15cb3dSCy Schubert * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28*2b15cb3dSCy Schubert */ 29*2b15cb3dSCy Schubert 30*2b15cb3dSCy Schubert #if defined(LIBC_SCCS) && !defined(lint) 31*2b15cb3dSCy Schubert static char *rcsid = "$OpenBSD: strlcpy.c,v 1.5 2001/05/13 15:40:16 deraadt Exp $"; 32*2b15cb3dSCy Schubert #endif /* LIBC_SCCS and not lint */ 33*2b15cb3dSCy Schubert 34*2b15cb3dSCy Schubert #include "event2/event-config.h" 35*2b15cb3dSCy Schubert #include "evconfig-private.h" 36*2b15cb3dSCy Schubert 37*2b15cb3dSCy Schubert #include <sys/types.h> 38*2b15cb3dSCy Schubert 39*2b15cb3dSCy Schubert #ifndef EVENT__HAVE_STRLCPY 40*2b15cb3dSCy Schubert #include "strlcpy-internal.h" 41*2b15cb3dSCy Schubert 42*2b15cb3dSCy Schubert /* 43*2b15cb3dSCy Schubert * Copy src to string dst of size siz. At most siz-1 characters 44*2b15cb3dSCy Schubert * will be copied. Always NUL terminates (unless siz == 0). 45*2b15cb3dSCy Schubert * Returns strlen(src); if retval >= siz, truncation occurred. 46*2b15cb3dSCy Schubert */ 47*2b15cb3dSCy Schubert size_t 48*2b15cb3dSCy Schubert event_strlcpy_(dst, src, siz) 49*2b15cb3dSCy Schubert char *dst; 50*2b15cb3dSCy Schubert const char *src; 51*2b15cb3dSCy Schubert size_t siz; 52*2b15cb3dSCy Schubert { 53*2b15cb3dSCy Schubert register char *d = dst; 54*2b15cb3dSCy Schubert register const char *s = src; 55*2b15cb3dSCy Schubert register size_t n = siz; 56*2b15cb3dSCy Schubert 57*2b15cb3dSCy Schubert /* Copy as many bytes as will fit */ 58*2b15cb3dSCy Schubert if (n != 0 && --n != 0) { 59*2b15cb3dSCy Schubert do { 60*2b15cb3dSCy Schubert if ((*d++ = *s++) == 0) 61*2b15cb3dSCy Schubert break; 62*2b15cb3dSCy Schubert } while (--n != 0); 63*2b15cb3dSCy Schubert } 64*2b15cb3dSCy Schubert 65*2b15cb3dSCy Schubert /* Not enough room in dst, add NUL and traverse rest of src */ 66*2b15cb3dSCy Schubert if (n == 0) { 67*2b15cb3dSCy Schubert if (siz != 0) 68*2b15cb3dSCy Schubert *d = '\0'; /* NUL-terminate dst */ 69*2b15cb3dSCy Schubert while (*s++) 70*2b15cb3dSCy Schubert ; 71*2b15cb3dSCy Schubert } 72*2b15cb3dSCy Schubert 73*2b15cb3dSCy Schubert return (s - src - 1); /* count does not include NUL */ 74*2b15cb3dSCy Schubert } 75*2b15cb3dSCy Schubert #endif 76