1 /* crypto/buffer/buffer.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
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@cryptsoft.com).
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.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
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@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@cryptsoft.com)"
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
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.]
61 #include <openssl/buffer.h>
63 BUF_MEM
*BUF_MEM_new(void)
67 ret
=OPENSSL_malloc(sizeof(BUF_MEM
));
70 BUFerr(BUF_F_BUF_MEM_NEW
,ERR_R_MALLOC_FAILURE
);
79 void BUF_MEM_free(BUF_MEM
*a
)
86 memset(a
->data
,0,(unsigned int)a
->max
);
87 OPENSSL_free(a
->data
);
92 int BUF_MEM_grow(BUF_MEM
*str
, int len
)
97 if (str
->length
>= len
)
104 memset(&str
->data
[str
->length
],0,len
-str
->length
);
109 if (str
->data
== NULL
)
110 ret
=OPENSSL_malloc(n
);
112 ret
=OPENSSL_realloc(str
->data
,n
);
115 BUFerr(BUF_F_BUF_MEM_GROW
,ERR_R_MALLOC_FAILURE
);
122 memset(&str
->data
[str
->length
],0,len
-str
->length
);
128 int BUF_MEM_grow_clean(BUF_MEM
*str
, int len
)
133 if (str
->length
>= len
)
135 memset(&str
->data
[len
],0,str
->length
-len
);
141 memset(&str
->data
[str
->length
],0,len
-str
->length
);
146 if (str
->data
== NULL
)
147 ret
=OPENSSL_malloc(n
);
149 ret
=OPENSSL_realloc_clean(str
->data
,str
->max
,n
);
152 BUFerr(BUF_F_BUF_MEM_GROW_CLEAN
,ERR_R_MALLOC_FAILURE
);
159 memset(&str
->data
[str
->length
],0,len
-str
->length
);
165 char *BUF_strdup(const char *str
)
167 if (str
== NULL
) return(NULL
);
168 return BUF_strndup(str
, strlen(str
));
171 char *BUF_strndup(const char *str
, size_t siz
)
175 if (str
== NULL
) return(NULL
);
177 ret
=OPENSSL_malloc(siz
+1);
180 BUFerr(BUF_F_BUF_STRNDUP
,ERR_R_MALLOC_FAILURE
);
183 BUF_strlcpy(ret
,str
,siz
+1);
187 void *BUF_memdup(const void *data
, size_t siz
)
191 if (data
== NULL
) return(NULL
);
193 ret
=OPENSSL_malloc(siz
);
196 BUFerr(BUF_F_BUF_MEMDUP
,ERR_R_MALLOC_FAILURE
);
199 return memcpy(ret
, data
, siz
);
202 size_t BUF_strlcpy(char *dst
, const char *src
, size_t size
)
205 for(; size
> 1 && *src
; size
--)
212 return l
+ strlen(src
);
215 size_t BUF_strlcat(char *dst
, const char *src
, size_t size
)
218 for(; size
> 0 && *dst
; size
--, dst
++)
220 return l
+ BUF_strlcpy(dst
, src
, size
);