buf_str.c revision 296341
1/* crypto/buffer/buffer.c */ 2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 59#include <stdio.h> 60#include "cryptlib.h" 61#include <openssl/buffer.h> 62 63char *BUF_strdup(const char *str) 64{ 65 if (str == NULL) 66 return (NULL); 67 return BUF_strndup(str, strlen(str)); 68} 69 70char *BUF_strndup(const char *str, size_t siz) 71{ 72 char *ret; 73 74 if (str == NULL) 75 return (NULL); 76 77 ret = OPENSSL_malloc(siz + 1); 78 if (ret == NULL) { 79 BUFerr(BUF_F_BUF_STRNDUP, ERR_R_MALLOC_FAILURE); 80 return (NULL); 81 } 82 BUF_strlcpy(ret, str, siz + 1); 83 return (ret); 84} 85 86void *BUF_memdup(const void *data, size_t siz) 87{ 88 void *ret; 89 90 if (data == NULL) 91 return (NULL); 92 93 ret = OPENSSL_malloc(siz); 94 if (ret == NULL) { 95 BUFerr(BUF_F_BUF_MEMDUP, ERR_R_MALLOC_FAILURE); 96 return (NULL); 97 } 98 return memcpy(ret, data, siz); 99} 100 101size_t BUF_strlcpy(char *dst, const char *src, size_t size) 102{ 103 size_t l = 0; 104 for (; size > 1 && *src; size--) { 105 *dst++ = *src++; 106 l++; 107 } 108 if (size) 109 *dst = '\0'; 110 return l + strlen(src); 111} 112 113size_t BUF_strlcat(char *dst, const char *src, size_t size) 114{ 115 size_t l = 0; 116 for (; size > 0 && *dst; size--, dst++) 117 l++; 118 return l + BUF_strlcpy(dst, src, size); 119} 120