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git.ipfire.org Git - thirdparty/openssl.git/blob - crypto/mem.c
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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/crypto.h>
65 static int allow_customize
= 1; /* we provide flexible functions for */
66 static int allow_customize_debug
= 1;/* exchanging memory-related functions at
67 * run-time, but this must be done
68 * before any blocks are actually
69 * allocated; or we'll run into huge
70 * problems when malloc/free pairs
73 /* may be changed as long as `allow_customize' is set */
74 static void *(*malloc_locked_func
)(size_t) = malloc
;
75 static void (*free_locked_func
)(void *) = free
;
76 static void *(*malloc_func
)(size_t) = malloc
;
77 static void *(*realloc_func
)(void *, size_t)= realloc
;
78 static void (*free_func
)(void *) = free
;
80 /* may be changed as long as `allow_customize_debug' is set */
81 /* XXX use correct function pointer types */
83 /* use default functions from mem_dbg.c */
84 static void (*malloc_debug_func
)()= (void (*)())CRYPTO_dbg_malloc
;
85 static void (*realloc_debug_func
)()= (void (*)())CRYPTO_dbg_realloc
;
86 static void (*free_debug_func
)()= (void (*)())CRYPTO_dbg_free
;
87 static void (*set_debug_options_func
)()= (void (*)())CRYPTO_dbg_set_options
;
88 static long (*get_debug_options_func
)()= (long (*)())CRYPTO_dbg_get_options
;
90 /* applications can use CRYPTO_malloc_debug_init() to select above case
92 static void (*malloc_debug_func
)()= NULL
;
93 static void (*realloc_debug_func
)()= NULL
;
94 static void (*free_debug_func
)()= NULL
;
95 static void (*set_debug_options_func
)()= NULL
;
96 static long (*get_debug_options_func
)()= NULL
;
100 int CRYPTO_set_mem_functions(void *(*m
)(size_t), void *(*r
)(void *, size_t),
103 if (!allow_customize
)
105 if ((m
== NULL
) || (r
== NULL
) || (f
== NULL
))
110 malloc_locked_func
=m
;
115 int CRYPTO_set_locked_mem_functions(void *(*m
)(size_t), void (*f
)(void *))
117 if (!allow_customize
)
119 if ((m
== NULL
) || (f
== NULL
))
121 malloc_locked_func
=m
;
126 int CRYPTO_set_mem_debug_functions(void (*m
)(), void (*r
)(), void (*f
)(),void (*so
)(),long (*go
)())
128 if (!allow_customize_debug
)
131 realloc_debug_func
=r
;
133 set_debug_options_func
=so
;
134 get_debug_options_func
=go
;
138 void CRYPTO_get_mem_functions(void *(**m
)(size_t), void *(**r
)(void *, size_t),
141 if (m
!= NULL
) *m
=malloc_func
;
142 if (r
!= NULL
) *r
=realloc_func
;
143 if (f
!= NULL
) *f
=free_func
;
146 void CRYPTO_get_locked_mem_functions(void *(**m
)(size_t), void (**f
)(void *))
148 if (m
!= NULL
) *m
=malloc_locked_func
;
149 if (f
!= NULL
) *f
=free_locked_func
;
152 void CRYPTO_get_mem_debug_functions(void (**m
)(), void (**r
)(), void (**f
)(),void (**so
)(),long (**go
)())
154 if (m
!= NULL
) *m
=malloc_debug_func
;
155 if (r
!= NULL
) *r
=realloc_debug_func
;
156 if (f
!= NULL
) *f
=free_debug_func
;
157 if (so
!= NULL
) *so
=set_debug_options_func
;
158 if (go
!= NULL
) *go
=get_debug_options_func
;
162 void *CRYPTO_malloc_locked(int num
, char *file
, int line
)
167 if (malloc_debug_func
!= NULL
)
169 allow_customize_debug
= 0;
170 malloc_debug_func(NULL
, num
, file
, line
, 0);
172 ret
= malloc_locked_func(num
);
174 fprintf(stderr
, "LEVITTE_DEBUG: > 0x%p (%d)\n", ret
, num
);
176 if (malloc_debug_func
!= NULL
)
177 malloc_debug_func(ret
, num
, file
, line
, 1);
182 void CRYPTO_free_locked(void *str
)
184 if (free_debug_func
!= NULL
)
185 free_debug_func(str
, 0);
187 fprintf(stderr
, "LEVITTE_DEBUG: < 0x%p\n", str
);
189 free_locked_func(str
);
190 if (free_debug_func
!= NULL
)
191 free_debug_func(NULL
, 1);
194 void *CRYPTO_malloc(int num
, char *file
, int line
)
199 if (malloc_debug_func
!= NULL
)
201 allow_customize_debug
= 0;
202 malloc_debug_func(NULL
, num
, file
, line
, 0);
204 ret
= malloc_func(num
);
206 fprintf(stderr
, "LEVITTE_DEBUG: > 0x%p (%d)\n", ret
, num
);
208 if (malloc_debug_func
!= NULL
)
209 malloc_debug_func(ret
, num
, file
, line
, 1);
214 void *CRYPTO_realloc(void *str
, int num
, char *file
, int line
)
218 if (realloc_debug_func
!= NULL
)
219 realloc_debug_func(str
, NULL
, num
, file
, line
, 0);
220 ret
= realloc_func(str
,num
);
222 fprintf(stderr
, "LEVITTE_DEBUG: | 0x%p -> 0x%p (%d)\n", str
, ret
, num
);
224 if (realloc_debug_func
!= NULL
)
225 realloc_debug_func(str
, ret
, num
, file
, line
, 1);
230 void CRYPTO_free(void *str
)
232 if (free_debug_func
!= NULL
)
233 free_debug_func(str
, 0);
235 fprintf(stderr
, "LEVITTE_DEBUG: < 0x%p\n", str
);
238 if (free_debug_func
!= NULL
)
239 free_debug_func(NULL
, 1);
242 void *CRYPTO_remalloc(void *a
, int num
, char *file
, int line
)
244 if (a
!= NULL
) Free(a
);
245 a
=(char *)Malloc(num
);
250 void CRYPTO_set_mem_debug_options(long bits
)
252 if (set_debug_options_func
!= NULL
)
253 set_debug_options_func(bits
);
256 long CRYPTO_get_mem_debug_options()
258 if (get_debug_options_func
!= NULL
)
259 return get_debug_options_func();