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-rw-r--r--crypto/buffer/buffer.c139
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+/* crypto/buffer/buffer.c */
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to. The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code. The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * "This product includes cryptographic software written by
+ * Eric Young (eay@cryptsoft.com)"
+ * The word 'cryptographic' can be left out if the rouines from the library
+ * being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ * the apps directory (application code) you must include an acknowledgement:
+ * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed. i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#include <stdio.h>
+#include "cryptlib.h"
+#include "buffer.h"
+
+BUF_MEM *BUF_MEM_new()
+ {
+ BUF_MEM *ret;
+
+ ret=(BUF_MEM *)Malloc(sizeof(BUF_MEM));
+ if (ret == NULL)
+ {
+ BUFerr(BUF_F_BUF_MEM_NEW,ERR_R_MALLOC_FAILURE);
+ return(NULL);
+ }
+ ret->length=0;
+ ret->max=0;
+ ret->data=NULL;
+ return(ret);
+ }
+
+void BUF_MEM_free(a)
+BUF_MEM *a;
+ {
+ if (a->data != NULL)
+ {
+ memset(a->data,0,(unsigned int)a->max);
+ Free(a->data);
+ }
+ Free(a);
+ }
+
+int BUF_MEM_grow(str, len)
+BUF_MEM *str;
+int len;
+ {
+ char *ret;
+ unsigned int n;
+
+ if (str->length >= len) return(len);
+ if (str->max >= len)
+ {
+ memset(&(str->data[str->length]),0,len-str->length);
+ str->length=len;
+ return(len);
+ }
+ n=(len+3)/3*4;
+ if (str->data == NULL)
+ ret=(char *)Malloc(n);
+ else
+ ret=(char *)Realloc(str->data,n);
+ if (ret == NULL)
+ {
+ BUFerr(BUF_F_BUF_MEM_GROW,ERR_R_MALLOC_FAILURE);
+ len=0;
+ }
+ else
+ {
+ str->data=ret;
+ str->length=len;
+ str->max=n;
+ }
+ return(len);
+ }
+
+char *BUF_strdup(str)
+char *str;
+ {
+ char *ret;
+ int n;
+
+ n=strlen(str);
+ ret=Malloc(n+1);
+ if (ret == NULL)
+ {
+ BUFerr(BUF_F_BUF_STRDUP,ERR_R_MALLOC_FAILURE);
+ return(NULL);
+ }
+ memcpy(ret,str,n+1);
+ return(ret);
+ }
+