1 /* crypto/buffer/buffer.c */ 2 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay (at) 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 (at) 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 (at) 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 (at) 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 63 char *BUF_strdup(const char *str) 64 { 65 if (str == NULL) return(NULL); 66 return BUF_strndup(str, strlen(str)); 67 } 68 69 char *BUF_strndup(const char *str, size_t siz) 70 { 71 char *ret; 72 73 if (str == NULL) return(NULL); 74 75 ret=OPENSSL_malloc(siz+1); 76 if (ret == NULL) 77 { 78 BUFerr(BUF_F_BUF_STRNDUP,ERR_R_MALLOC_FAILURE); 79 return(NULL); 80 } 81 BUF_strlcpy(ret,str,siz+1); 82 return(ret); 83 } 84 85 void *BUF_memdup(const void *data, size_t siz) 86 { 87 void *ret; 88 89 if (data == NULL) return(NULL); 90 91 ret=OPENSSL_malloc(siz); 92 if (ret == NULL) 93 { 94 BUFerr(BUF_F_BUF_MEMDUP,ERR_R_MALLOC_FAILURE); 95 return(NULL); 96 } 97 return memcpy(ret, data, siz); 98 } 99 100 size_t BUF_strlcpy(char *dst, const char *src, size_t size) 101 { 102 size_t l = 0; 103 for(; size > 1 && *src; size--) 104 { 105 *dst++ = *src++; 106 l++; 107 } 108 if (size) 109 *dst = '\0'; 110 return l + strlen(src); 111 } 112 113 size_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
