1392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom/* crypto/buffer/buffer.c */ 2392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * All rights reserved. 4392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * 5392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * This package is an SSL implementation written 6392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * by Eric Young (eay@cryptsoft.com). 7392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * The implementation was written so as to conform with Netscapes SSL. 8392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * 9392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * This library is free for commercial and non-commercial use as long as 10392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * the following conditions are aheared to. The following conditions 11392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * apply to all code found in this distribution, be it the RC4, RSA, 12392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * included with this distribution is covered by the same copyright terms 14392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * 16392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * Copyright remains Eric Young's, and as such any Copyright notices in 17392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * the code are not to be removed. 18392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * If this package is used in a product, Eric Young should be given attribution 19392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * as the author of the parts of the library used. 20392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * This can be in the form of a textual message at program startup or 21392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * in documentation (online or textual) provided with the package. 22392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * 23392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * Redistribution and use in source and binary forms, with or without 24392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * modification, are permitted provided that the following conditions 25392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * are met: 26392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * 1. Redistributions of source code must retain the copyright 27392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * notice, this list of conditions and the following disclaimer. 28392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * 2. Redistributions in binary form must reproduce the above copyright 29392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * notice, this list of conditions and the following disclaimer in the 30392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * documentation and/or other materials provided with the distribution. 31392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * 3. All advertising materials mentioning features or use of this software 32392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * must display the following acknowledgement: 33392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * "This product includes cryptographic software written by 34392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * Eric Young (eay@cryptsoft.com)" 35392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * The word 'cryptographic' can be left out if the rouines from the library 36392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * being used are not cryptographic related :-). 37392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * 4. If you include any Windows specific code (or a derivative thereof) from 38392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * the apps directory (application code) you must include an acknowledgement: 39392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * 41392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * SUCH DAMAGE. 52392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * 53392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * The licence and distribution terms for any publically available version or 54392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * derivative of this code cannot be changed. i.e. this code cannot simply be 55392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * copied and put under another distribution licence 56392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom * [including the GNU Public Licence.] 57392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom */ 58392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom 59392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom#include <stdio.h> 60392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom#include "cryptlib.h" 61392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom#include <openssl/buffer.h> 62392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom 63392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstromchar *BUF_strdup(const char *str) 64392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom { 65392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom if (str == NULL) return(NULL); 66392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom return BUF_strndup(str, strlen(str)); 67392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom } 68392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom 69392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstromchar *BUF_strndup(const char *str, size_t siz) 70392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom { 71392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom char *ret; 72392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom 73392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom if (str == NULL) return(NULL); 74392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom 75392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom ret=OPENSSL_malloc(siz+1); 76392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom if (ret == NULL) 77392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom { 78392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom BUFerr(BUF_F_BUF_STRNDUP,ERR_R_MALLOC_FAILURE); 79392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom return(NULL); 80392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom } 81392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom BUF_strlcpy(ret,str,siz+1); 82392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom return(ret); 83392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom } 84392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom 85392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstromvoid *BUF_memdup(const void *data, size_t siz) 86392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom { 87392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom void *ret; 88392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom 89392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom if (data == NULL) return(NULL); 90392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom 91392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom ret=OPENSSL_malloc(siz); 92392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom if (ret == NULL) 93392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom { 94392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom BUFerr(BUF_F_BUF_MEMDUP,ERR_R_MALLOC_FAILURE); 95392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom return(NULL); 96392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom } 97392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom return memcpy(ret, data, siz); 98392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom } 99392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom 100392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstromsize_t BUF_strlcpy(char *dst, const char *src, size_t size) 101392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom { 102392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom size_t l = 0; 103392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom for(; size > 1 && *src; size--) 104392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom { 105392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom *dst++ = *src++; 106392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom l++; 107392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom } 108392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom if (size) 109392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom *dst = '\0'; 110392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom return l + strlen(src); 111392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom } 112392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom 113392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstromsize_t BUF_strlcat(char *dst, const char *src, size_t size) 114392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom { 115392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom size_t l = 0; 116392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom for(; size > 0 && *dst; size--, dst++) 117392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom l++; 118392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom return l + BUF_strlcpy(dst, src, size); 119392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom } 120