1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/os/ossrv/ssl/libcrypto/src/crypto/buffer/buffer.c Fri Jun 15 03:10:57 2012 +0200
1.3 @@ -0,0 +1,221 @@
1.4 +/* crypto/buffer/buffer.c */
1.5 +/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
1.6 + * All rights reserved.
1.7 + *
1.8 + * This package is an SSL implementation written
1.9 + * by Eric Young (eay@cryptsoft.com).
1.10 + * The implementation was written so as to conform with Netscapes SSL.
1.11 + *
1.12 + * This library is free for commercial and non-commercial use as long as
1.13 + * the following conditions are aheared to. The following conditions
1.14 + * apply to all code found in this distribution, be it the RC4, RSA,
1.15 + * lhash, DES, etc., code; not just the SSL code. The SSL documentation
1.16 + * included with this distribution is covered by the same copyright terms
1.17 + * except that the holder is Tim Hudson (tjh@cryptsoft.com).
1.18 + *
1.19 + * Copyright remains Eric Young's, and as such any Copyright notices in
1.20 + * the code are not to be removed.
1.21 + * If this package is used in a product, Eric Young should be given attribution
1.22 + * as the author of the parts of the library used.
1.23 + * This can be in the form of a textual message at program startup or
1.24 + * in documentation (online or textual) provided with the package.
1.25 + *
1.26 + * Redistribution and use in source and binary forms, with or without
1.27 + * modification, are permitted provided that the following conditions
1.28 + * are met:
1.29 + * 1. Redistributions of source code must retain the copyright
1.30 + * notice, this list of conditions and the following disclaimer.
1.31 + * 2. Redistributions in binary form must reproduce the above copyright
1.32 + * notice, this list of conditions and the following disclaimer in the
1.33 + * documentation and/or other materials provided with the distribution.
1.34 + * 3. All advertising materials mentioning features or use of this software
1.35 + * must display the following acknowledgement:
1.36 + * "This product includes cryptographic software written by
1.37 + * Eric Young (eay@cryptsoft.com)"
1.38 + * The word 'cryptographic' can be left out if the rouines from the library
1.39 + * being used are not cryptographic related :-).
1.40 + * 4. If you include any Windows specific code (or a derivative thereof) from
1.41 + * the apps directory (application code) you must include an acknowledgement:
1.42 + * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
1.43 + *
1.44 + * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
1.45 + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
1.46 + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
1.47 + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
1.48 + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
1.49 + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
1.50 + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1.51 + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
1.52 + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
1.53 + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
1.54 + * SUCH DAMAGE.
1.55 + *
1.56 + * The licence and distribution terms for any publically available version or
1.57 + * derivative of this code cannot be changed. i.e. this code cannot simply be
1.58 + * copied and put under another distribution licence
1.59 + * [including the GNU Public Licence.]
1.60 + */
1.61 +
1.62 +#include <stdio.h>
1.63 +#include "cryptlib.h"
1.64 +#include <openssl/buffer.h>
1.65 +
1.66 +EXPORT_C BUF_MEM *BUF_MEM_new(void)
1.67 + {
1.68 + BUF_MEM *ret;
1.69 +
1.70 + ret=OPENSSL_malloc(sizeof(BUF_MEM));
1.71 + if (ret == NULL)
1.72 + {
1.73 + BUFerr(BUF_F_BUF_MEM_NEW,ERR_R_MALLOC_FAILURE);
1.74 + return(NULL);
1.75 + }
1.76 + ret->length=0;
1.77 + ret->max=0;
1.78 + ret->data=NULL;
1.79 + return(ret);
1.80 + }
1.81 +
1.82 +EXPORT_C void BUF_MEM_free(BUF_MEM *a)
1.83 + {
1.84 + if(a == NULL)
1.85 + return;
1.86 +
1.87 + if (a->data != NULL)
1.88 + {
1.89 + memset(a->data,0,(unsigned int)a->max);
1.90 + OPENSSL_free(a->data);
1.91 + }
1.92 + OPENSSL_free(a);
1.93 + }
1.94 +
1.95 +EXPORT_C int BUF_MEM_grow(BUF_MEM *str, int len)
1.96 + {
1.97 + char *ret;
1.98 + unsigned int n;
1.99 +
1.100 + if (str->length >= len)
1.101 + {
1.102 + str->length=len;
1.103 + return(len);
1.104 + }
1.105 + if (str->max >= len)
1.106 + {
1.107 + memset(&str->data[str->length],0,len-str->length);
1.108 + str->length=len;
1.109 + return(len);
1.110 + }
1.111 + n=(len+3)/3*4;
1.112 + if (str->data == NULL)
1.113 + ret=OPENSSL_malloc(n);
1.114 + else
1.115 + ret=OPENSSL_realloc(str->data,n);
1.116 + if (ret == NULL)
1.117 + {
1.118 + BUFerr(BUF_F_BUF_MEM_GROW,ERR_R_MALLOC_FAILURE);
1.119 + len=0;
1.120 + }
1.121 + else
1.122 + {
1.123 + str->data=ret;
1.124 + str->max=n;
1.125 + memset(&str->data[str->length],0,len-str->length);
1.126 + str->length=len;
1.127 + }
1.128 + return(len);
1.129 + }
1.130 +
1.131 +EXPORT_C int BUF_MEM_grow_clean(BUF_MEM *str, int len)
1.132 + {
1.133 + char *ret;
1.134 + unsigned int n;
1.135 +
1.136 + if (str->length >= len)
1.137 + {
1.138 + memset(&str->data[len],0,str->length-len);
1.139 + str->length=len;
1.140 + return(len);
1.141 + }
1.142 + if (str->max >= len)
1.143 + {
1.144 + memset(&str->data[str->length],0,len-str->length);
1.145 + str->length=len;
1.146 + return(len);
1.147 + }
1.148 + n=(len+3)/3*4;
1.149 + if (str->data == NULL)
1.150 + ret=OPENSSL_malloc(n);
1.151 + else
1.152 + ret=OPENSSL_realloc_clean(str->data,str->max,n);
1.153 + if (ret == NULL)
1.154 + {
1.155 + BUFerr(BUF_F_BUF_MEM_GROW_CLEAN,ERR_R_MALLOC_FAILURE);
1.156 + len=0;
1.157 + }
1.158 + else
1.159 + {
1.160 + str->data=ret;
1.161 + str->max=n;
1.162 + memset(&str->data[str->length],0,len-str->length);
1.163 + str->length=len;
1.164 + }
1.165 + return(len);
1.166 + }
1.167 +
1.168 +EXPORT_C char *BUF_strdup(const char *str)
1.169 + {
1.170 + if (str == NULL) return(NULL);
1.171 + return BUF_strndup(str, strlen(str));
1.172 + }
1.173 +
1.174 +EXPORT_C char *BUF_strndup(const char *str, size_t siz)
1.175 + {
1.176 + char *ret;
1.177 +
1.178 + if (str == NULL) return(NULL);
1.179 +
1.180 + ret=OPENSSL_malloc(siz+1);
1.181 + if (ret == NULL)
1.182 + {
1.183 + BUFerr(BUF_F_BUF_STRNDUP,ERR_R_MALLOC_FAILURE);
1.184 + return(NULL);
1.185 + }
1.186 + BUF_strlcpy(ret,str,siz+1);
1.187 + return(ret);
1.188 + }
1.189 +
1.190 +EXPORT_C void *BUF_memdup(const void *data, size_t siz)
1.191 + {
1.192 + void *ret;
1.193 +
1.194 + if (data == NULL) return(NULL);
1.195 +
1.196 + ret=OPENSSL_malloc(siz);
1.197 + if (ret == NULL)
1.198 + {
1.199 + BUFerr(BUF_F_BUF_MEMDUP,ERR_R_MALLOC_FAILURE);
1.200 + return(NULL);
1.201 + }
1.202 + return memcpy(ret, data, siz);
1.203 + }
1.204 +
1.205 +EXPORT_C size_t BUF_strlcpy(char *dst, const char *src, size_t size)
1.206 + {
1.207 + size_t l = 0;
1.208 + for(; size > 1 && *src; size--)
1.209 + {
1.210 + *dst++ = *src++;
1.211 + l++;
1.212 + }
1.213 + if (size)
1.214 + *dst = '\0';
1.215 + return l + strlen(src);
1.216 + }
1.217 +
1.218 +EXPORT_C size_t BUF_strlcat(char *dst, const char *src, size_t size)
1.219 + {
1.220 + size_t l = 0;
1.221 + for(; size > 0 && *dst; size--, dst++)
1.222 + l++;
1.223 + return l + BUF_strlcpy(dst, src, size);
1.224 + }