12949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project/* $NetBSD: strlcpy.c,v 1.5 1999/09/20 04:39:47 lukem Exp $ */ 22949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project/* from OpenBSD: strlcpy.c,v 1.4 1999/05/01 18:56:41 millert Exp */ 32949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project 42949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project/* 52949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com> 62949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * All rights reserved. 72949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * 82949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * Redistribution and use in source and binary forms, with or without 92949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * modification, are permitted provided that the following conditions 102949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * are met: 112949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * 1. Redistributions of source code must retain the above copyright 122949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * notice, this list of conditions and the following disclaimer. 132949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * 2. Redistributions in binary form must reproduce the above copyright 142949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * notice, this list of conditions and the following disclaimer in the 152949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * documentation and/or other materials provided with the distribution. 162949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * 3. The name of the author may not be used to endorse or promote products 172949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * derived from this software without specific prior written permission. 182949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * 192949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, 202949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY 212949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 222949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 232949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 242949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 252949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 262949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 272949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 282949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 292949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project */ 302949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project 312949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project#ifdef HAVE_CONFIG_H 322949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project#include <config.h> 332949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project#endif 342949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project 352949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project#include <tcpdump-stdinc.h> 362949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project 372949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project#include <string.h> 382949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project 39892a68bdf2f50b40781212e4d7ee7369c8165953Elliott Hughes#include "interface.h" 40892a68bdf2f50b40781212e4d7ee7369c8165953Elliott Hughes 412949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project/* 422949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * Copy src to string dst of size siz. At most siz-1 characters 432949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * will be copied. Always NUL terminates (unless siz == 0). 442949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * Returns strlen(src); if retval >= siz, truncation occurred. 452949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project */ 462949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Projectsize_t 472949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Projectstrlcpy(char *dst, const char *src, size_t siz) 482949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project{ 492949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project register char *d = dst; 502949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project register const char *s = src; 512949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project register size_t n = siz; 522949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project 532949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project /* Copy as many bytes as will fit */ 542949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project if (n != 0 && --n != 0) { 552949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project do { 562949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project if ((*d++ = *s++) == 0) 572949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project break; 582949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project } while (--n != 0); 592949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project } 602949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project 612949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project /* Not enough room in dst, add NUL and traverse rest of src */ 622949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project if (n == 0) { 632949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project if (siz != 0) 642949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project *d = '\0'; /* NUL-terminate dst */ 652949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project while (*s++) 662949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project ; 672949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project } 682949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project 692949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project return(s - src - 1); /* count does not include NUL */ 702949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project} 71