mirror of
https://github.com/guanzhi/GmSSL.git
synced 2026-05-07 08:56:17 +08:00
update
This commit is contained in:
Zhi Guan
@@ -5,21 +5,21 @@
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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@@ -34,10 +34,10 @@
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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@@ -49,7 +49,7 @@
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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@@ -60,185 +60,128 @@
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#include "cryptlib.h"
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#include <openssl/buffer.h>
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BUF_MEM *BUF_MEM_new(void)
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{
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BUF_MEM *ret;
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/*
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* LIMIT_BEFORE_EXPANSION is the maximum n such that (n+3)/3*4 < 2**31. That
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* function is applied in several functions in this file and this limit
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* ensures that the result fits in an int.
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*/
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#define LIMIT_BEFORE_EXPANSION 0x5ffffffc
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ret=OPENSSL_malloc(sizeof(BUF_MEM));
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if (ret == NULL)
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{
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BUFerr(BUF_F_BUF_MEM_NEW,ERR_R_MALLOC_FAILURE);
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return(NULL);
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}
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ret->length=0;
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ret->max=0;
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ret->data=NULL;
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return(ret);
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}
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BUF_MEM *BUF_MEM_new(void)
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{
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BUF_MEM *ret;
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ret = OPENSSL_malloc(sizeof(BUF_MEM));
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if (ret == NULL) {
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BUFerr(BUF_F_BUF_MEM_NEW, ERR_R_MALLOC_FAILURE);
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return (NULL);
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}
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ret->length = 0;
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ret->max = 0;
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ret->data = NULL;
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return (ret);
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}
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void BUF_MEM_free(BUF_MEM *a)
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{
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if(a == NULL)
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return;
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{
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if (a == NULL)
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return;
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if (a->data != NULL)
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{
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memset(a->data,0,(unsigned int)a->max);
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OPENSSL_free(a->data);
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}
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OPENSSL_free(a);
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}
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if (a->data != NULL) {
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OPENSSL_cleanse(a->data, a->max);
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OPENSSL_free(a->data);
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}
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OPENSSL_free(a);
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}
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int BUF_MEM_grow(BUF_MEM *str, size_t len)
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{
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char *ret;
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size_t n;
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{
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char *ret;
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size_t n;
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if (str->length >= len)
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{
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str->length=len;
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return(len);
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}
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if (str->max >= len)
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{
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memset(&str->data[str->length],0,len-str->length);
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str->length=len;
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return(len);
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}
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n=(len+3)/3*4;
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if (str->data == NULL)
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ret=OPENSSL_malloc(n);
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else
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ret=OPENSSL_realloc(str->data,n);
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if (ret == NULL)
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{
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BUFerr(BUF_F_BUF_MEM_GROW,ERR_R_MALLOC_FAILURE);
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len=0;
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}
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else
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{
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str->data=ret;
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str->max=n;
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memset(&str->data[str->length],0,len-str->length);
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str->length=len;
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}
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return(len);
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}
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if (str->length >= len) {
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str->length = len;
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return (len);
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}
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if (str->max >= len) {
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memset(&str->data[str->length], 0, len - str->length);
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str->length = len;
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return (len);
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}
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/* This limit is sufficient to ensure (len+3)/3*4 < 2**31 */
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if (len > LIMIT_BEFORE_EXPANSION) {
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BUFerr(BUF_F_BUF_MEM_GROW, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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n = (len + 3) / 3 * 4;
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if (str->data == NULL)
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ret = OPENSSL_malloc(n);
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else
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ret = OPENSSL_realloc(str->data, n);
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if (ret == NULL) {
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BUFerr(BUF_F_BUF_MEM_GROW, ERR_R_MALLOC_FAILURE);
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len = 0;
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} else {
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str->data = ret;
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str->max = n;
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memset(&str->data[str->length], 0, len - str->length);
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str->length = len;
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}
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return (len);
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}
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int BUF_MEM_grow_clean(BUF_MEM *str, size_t len)
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{
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char *ret;
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size_t n;
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{
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char *ret;
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size_t n;
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if (str->length >= len)
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{
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memset(&str->data[len],0,str->length-len);
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str->length=len;
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return(len);
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}
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if (str->max >= len)
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{
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memset(&str->data[str->length],0,len-str->length);
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str->length=len;
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return(len);
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}
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n=(len+3)/3*4;
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if (str->data == NULL)
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ret=OPENSSL_malloc(n);
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else
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ret=OPENSSL_realloc_clean(str->data,str->max,n);
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if (ret == NULL)
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{
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BUFerr(BUF_F_BUF_MEM_GROW_CLEAN,ERR_R_MALLOC_FAILURE);
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len=0;
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}
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else
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{
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str->data=ret;
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str->max=n;
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memset(&str->data[str->length],0,len-str->length);
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str->length=len;
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}
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return(len);
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}
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if (str->length >= len) {
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memset(&str->data[len], 0, str->length - len);
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str->length = len;
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return (len);
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}
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if (str->max >= len) {
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memset(&str->data[str->length], 0, len - str->length);
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str->length = len;
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return (len);
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}
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/* This limit is sufficient to ensure (len+3)/3*4 < 2**31 */
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if (len > LIMIT_BEFORE_EXPANSION) {
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BUFerr(BUF_F_BUF_MEM_GROW_CLEAN, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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n = (len + 3) / 3 * 4;
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if (str->data == NULL)
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ret = OPENSSL_malloc(n);
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else
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ret = OPENSSL_realloc_clean(str->data, str->max, n);
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if (ret == NULL) {
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BUFerr(BUF_F_BUF_MEM_GROW_CLEAN, ERR_R_MALLOC_FAILURE);
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len = 0;
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} else {
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str->data = ret;
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str->max = n;
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memset(&str->data[str->length], 0, len - str->length);
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str->length = len;
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}
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return (len);
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}
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char *BUF_strdup(const char *str)
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{
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if (str == NULL) return(NULL);
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return BUF_strndup(str, strlen(str));
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}
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char *BUF_strndup(const char *str, size_t siz)
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{
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char *ret;
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if (str == NULL) return(NULL);
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ret=OPENSSL_malloc(siz+1);
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if (ret == NULL)
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{
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BUFerr(BUF_F_BUF_STRNDUP,ERR_R_MALLOC_FAILURE);
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return(NULL);
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}
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BUF_strlcpy(ret,str,siz+1);
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return(ret);
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}
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void *BUF_memdup(const void *data, size_t siz)
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{
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void *ret;
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if (data == NULL) return(NULL);
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ret=OPENSSL_malloc(siz);
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if (ret == NULL)
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{
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BUFerr(BUF_F_BUF_MEMDUP,ERR_R_MALLOC_FAILURE);
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return(NULL);
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}
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return memcpy(ret, data, siz);
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}
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size_t BUF_strlcpy(char *dst, const char *src, size_t size)
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{
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size_t l = 0;
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for(; size > 1 && *src; size--)
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{
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*dst++ = *src++;
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l++;
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}
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if (size)
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*dst = '\0';
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return l + strlen(src);
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}
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size_t BUF_strlcat(char *dst, const char *src, size_t size)
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{
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size_t l = 0;
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for(; size > 0 && *dst; size--, dst++)
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l++;
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return l + BUF_strlcpy(dst, src, size);
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}
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void BUF_reverse(unsigned char *out, unsigned char *in, size_t size)
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{
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size_t i;
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if (in)
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{
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out += size - 1;
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for (i = 0; i < size; i++)
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*in++ = *out--;
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}
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else
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{
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unsigned char *q;
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char c;
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q = out + size - 1;
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for (i = 0; i < size/2; i++)
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{
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c = *q;
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*q-- = *out;
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*out++ = c;
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}
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}
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}
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void BUF_reverse(unsigned char *out, const unsigned char *in, size_t size)
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{
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size_t i;
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if (in) {
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out += size - 1;
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for (i = 0; i < size; i++)
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*out-- = *in++;
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} else {
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unsigned char *q;
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char c;
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q = out + size - 1;
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for (i = 0; i < size / 2; i++) {
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c = *q;
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*q-- = *out;
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*out++ = c;
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}
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}
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}
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