xref: /freebsd/crypto/heimdal/lib/roken/strlcpy.c (revision 6a068746777241722b2b32c5d0bc443a2a64d80b)
1b528cefcSMark Murray /*
2*ae771770SStanislav Sedov  * Copyright (c) 1995-2002 Kungliga Tekniska Högskolan
3b528cefcSMark Murray  * (Royal Institute of Technology, Stockholm, Sweden).
4b528cefcSMark Murray  * All rights reserved.
5b528cefcSMark Murray  *
6b528cefcSMark Murray  * Redistribution and use in source and binary forms, with or without
7b528cefcSMark Murray  * modification, are permitted provided that the following conditions
8b528cefcSMark Murray  * are met:
9b528cefcSMark Murray  *
10b528cefcSMark Murray  * 1. Redistributions of source code must retain the above copyright
11b528cefcSMark Murray  *    notice, this list of conditions and the following disclaimer.
12b528cefcSMark Murray  *
13b528cefcSMark Murray  * 2. Redistributions in binary form must reproduce the above copyright
14b528cefcSMark Murray  *    notice, this list of conditions and the following disclaimer in the
15b528cefcSMark Murray  *    documentation and/or other materials provided with the distribution.
16b528cefcSMark Murray  *
17b528cefcSMark Murray  * 3. Neither the name of the Institute nor the names of its contributors
18b528cefcSMark Murray  *    may be used to endorse or promote products derived from this software
19b528cefcSMark Murray  *    without specific prior written permission.
20b528cefcSMark Murray  *
21b528cefcSMark Murray  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22b528cefcSMark Murray  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23b528cefcSMark Murray  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24b528cefcSMark Murray  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25b528cefcSMark Murray  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26b528cefcSMark Murray  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27b528cefcSMark Murray  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28b528cefcSMark Murray  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29b528cefcSMark Murray  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30b528cefcSMark Murray  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31b528cefcSMark Murray  * SUCH DAMAGE.
32b528cefcSMark Murray  */
33b528cefcSMark Murray 
34b528cefcSMark Murray #include <config.h>
35b528cefcSMark Murray #include "roken.h"
36b528cefcSMark Murray 
37b528cefcSMark Murray #ifndef HAVE_STRLCPY
38b528cefcSMark Murray 
39*ae771770SStanislav Sedov #if defined(_MSC_VER) && _MSC_VER >= 1400
40*ae771770SStanislav Sedov 
41*ae771770SStanislav Sedov ROKEN_LIB_FUNCTION size_t ROKEN_LIB_CALL
strlcpy(char * dst,const char * src,size_t dst_cch)42*ae771770SStanislav Sedov strlcpy (char *dst, const char *src, size_t dst_cch)
43*ae771770SStanislav Sedov {
44*ae771770SStanislav Sedov     errno_t e;
45*ae771770SStanislav Sedov 
46*ae771770SStanislav Sedov     if (dst_cch > 0)
47*ae771770SStanislav Sedov         e = strncpy_s(dst, dst_cch, src, _TRUNCATE);
48*ae771770SStanislav Sedov 
49*ae771770SStanislav Sedov     return strlen (src);
50*ae771770SStanislav Sedov }
51*ae771770SStanislav Sedov 
52*ae771770SStanislav Sedov #else
53*ae771770SStanislav Sedov 
54*ae771770SStanislav Sedov ROKEN_LIB_FUNCTION size_t ROKEN_LIB_CALL
strlcpy(char * dst,const char * src,size_t dst_sz)55b528cefcSMark Murray strlcpy (char *dst, const char *src, size_t dst_sz)
56b528cefcSMark Murray {
57b528cefcSMark Murray     size_t n;
58b528cefcSMark Murray 
598373020dSJacques Vidrine     for (n = 0; n < dst_sz; n++) {
608373020dSJacques Vidrine 	if ((*dst++ = *src++) == '\0')
618373020dSJacques Vidrine 	    break;
628373020dSJacques Vidrine     }
638373020dSJacques Vidrine 
648373020dSJacques Vidrine     if (n < dst_sz)
65b528cefcSMark Murray 	return n;
668373020dSJacques Vidrine     if (n > 0)
678373020dSJacques Vidrine 	*(dst - 1) = '\0';
68b528cefcSMark Murray     return n + strlen (src);
69b528cefcSMark Murray }
70b528cefcSMark Murray 
71b528cefcSMark Murray #endif
72*ae771770SStanislav Sedov 
73*ae771770SStanislav Sedov #endif
74