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-rw-r--r--src/lib/libcrypto/rand/rand.h150
-rw-r--r--src/lib/libcrypto/rand/rand_err.c101
-rw-r--r--src/lib/libcrypto/rand/rand_lib.c306
-rw-r--r--src/lib/libcrypto/rand/randfile.c328
4 files changed, 0 insertions, 885 deletions
diff --git a/src/lib/libcrypto/rand/rand.h b/src/lib/libcrypto/rand/rand.h
deleted file mode 100644
index bb5520e80a..0000000000
--- a/src/lib/libcrypto/rand/rand.h
+++ /dev/null
@@ -1,150 +0,0 @@
1/* crypto/rand/rand.h */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
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.
8 *
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).
15 *
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.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
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)"
40 *
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
51 * SUCH DAMAGE.
52 *
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.]
57 */
58
59#ifndef HEADER_RAND_H
60#define HEADER_RAND_H
61
62#include <stdlib.h>
63#include <openssl/ossl_typ.h>
64#include <openssl/e_os2.h>
65
66#if defined(OPENSSL_SYS_WINDOWS)
67#include <windows.h>
68#endif
69
70#ifdef __cplusplus
71extern "C" {
72#endif
73
74#if defined(OPENSSL_FIPS)
75#define FIPS_RAND_SIZE_T size_t
76#endif
77
78/* Already defined in ossl_typ.h */
79/* typedef struct rand_meth_st RAND_METHOD; */
80
81struct rand_meth_st
82 {
83 void (*seed)(const void *buf, int num);
84 int (*bytes)(unsigned char *buf, int num);
85 void (*cleanup)(void);
86 void (*add)(const void *buf, int num, double entropy);
87 int (*pseudorand)(unsigned char *buf, int num);
88 int (*status)(void);
89 };
90
91#ifdef BN_DEBUG
92extern int rand_predictable;
93#endif
94
95int RAND_set_rand_method(const RAND_METHOD *meth);
96const RAND_METHOD *RAND_get_rand_method(void);
97#ifndef OPENSSL_NO_ENGINE
98int RAND_set_rand_engine(ENGINE *engine);
99#endif
100RAND_METHOD *RAND_SSLeay(void);
101void RAND_cleanup(void );
102int RAND_bytes(unsigned char *buf,int num);
103int RAND_pseudo_bytes(unsigned char *buf,int num);
104void RAND_seed(const void *buf,int num);
105void RAND_add(const void *buf,int num,double entropy);
106int RAND_load_file(const char *file,long max_bytes);
107int RAND_write_file(const char *file);
108const char *RAND_file_name(char *file,size_t num);
109int RAND_status(void);
110int RAND_query_egd_bytes(const char *path, unsigned char *buf, int bytes);
111int RAND_egd(const char *path);
112int RAND_egd_bytes(const char *path,int bytes);
113int RAND_poll(void);
114
115#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_WIN32)
116
117void RAND_screen(void);
118int RAND_event(UINT, WPARAM, LPARAM);
119
120#endif
121
122#ifdef OPENSSL_FIPS
123void RAND_set_fips_drbg_type(int type, int flags);
124int RAND_init_fips(void);
125#endif
126
127/* BEGIN ERROR CODES */
128/* The following lines are auto generated by the script mkerr.pl. Any changes
129 * made after this point may be overwritten when the script is next run.
130 */
131void ERR_load_RAND_strings(void);
132
133/* Error codes for the RAND functions. */
134
135/* Function codes. */
136#define RAND_F_RAND_GET_RAND_METHOD 101
137#define RAND_F_RAND_INIT_FIPS 102
138#define RAND_F_SSLEAY_RAND_BYTES 100
139
140/* Reason codes. */
141#define RAND_R_DUAL_EC_DRBG_DISABLED 104
142#define RAND_R_ERROR_INITIALISING_DRBG 102
143#define RAND_R_ERROR_INSTANTIATING_DRBG 103
144#define RAND_R_NO_FIPS_RANDOM_METHOD_SET 101
145#define RAND_R_PRNG_NOT_SEEDED 100
146
147#ifdef __cplusplus
148}
149#endif
150#endif
diff --git a/src/lib/libcrypto/rand/rand_err.c b/src/lib/libcrypto/rand/rand_err.c
deleted file mode 100644
index c4c80fc8cc..0000000000
--- a/src/lib/libcrypto/rand/rand_err.c
+++ /dev/null
@@ -1,101 +0,0 @@
1/* crypto/rand/rand_err.c */
2/* ====================================================================
3 * Copyright (c) 1999-2011 The OpenSSL Project. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the
15 * distribution.
16 *
17 * 3. All advertising materials mentioning features or use of this
18 * software must display the following acknowledgment:
19 * "This product includes software developed by the OpenSSL Project
20 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
21 *
22 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23 * endorse or promote products derived from this software without
24 * prior written permission. For written permission, please contact
25 * openssl-core@OpenSSL.org.
26 *
27 * 5. Products derived from this software may not be called "OpenSSL"
28 * nor may "OpenSSL" appear in their names without prior written
29 * permission of the OpenSSL Project.
30 *
31 * 6. Redistributions of any form whatsoever must retain the following
32 * acknowledgment:
33 * "This product includes software developed by the OpenSSL Project
34 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
35 *
36 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47 * OF THE POSSIBILITY OF SUCH DAMAGE.
48 * ====================================================================
49 *
50 * This product includes cryptographic software written by Eric Young
51 * (eay@cryptsoft.com). This product includes software written by Tim
52 * Hudson (tjh@cryptsoft.com).
53 *
54 */
55
56/* NOTE: this file was auto generated by the mkerr.pl script: any changes
57 * made to it will be overwritten when the script next updates this file,
58 * only reason strings will be preserved.
59 */
60
61#include <stdio.h>
62#include <openssl/err.h>
63#include <openssl/rand.h>
64
65/* BEGIN ERROR CODES */
66#ifndef OPENSSL_NO_ERR
67
68#define ERR_FUNC(func) ERR_PACK(ERR_LIB_RAND,func,0)
69#define ERR_REASON(reason) ERR_PACK(ERR_LIB_RAND,0,reason)
70
71static ERR_STRING_DATA RAND_str_functs[]=
72 {
73{ERR_FUNC(RAND_F_RAND_GET_RAND_METHOD), "RAND_get_rand_method"},
74{ERR_FUNC(RAND_F_RAND_INIT_FIPS), "RAND_init_fips"},
75{ERR_FUNC(RAND_F_SSLEAY_RAND_BYTES), "SSLEAY_RAND_BYTES"},
76{0,NULL}
77 };
78
79static ERR_STRING_DATA RAND_str_reasons[]=
80 {
81{ERR_REASON(RAND_R_DUAL_EC_DRBG_DISABLED),"dual ec drbg disabled"},
82{ERR_REASON(RAND_R_ERROR_INITIALISING_DRBG),"error initialising drbg"},
83{ERR_REASON(RAND_R_ERROR_INSTANTIATING_DRBG),"error instantiating drbg"},
84{ERR_REASON(RAND_R_NO_FIPS_RANDOM_METHOD_SET),"no fips random method set"},
85{ERR_REASON(RAND_R_PRNG_NOT_SEEDED) ,"PRNG not seeded"},
86{0,NULL}
87 };
88
89#endif
90
91void ERR_load_RAND_strings(void)
92 {
93#ifndef OPENSSL_NO_ERR
94
95 if (ERR_func_error_string(RAND_str_functs[0].error) == NULL)
96 {
97 ERR_load_strings(0,RAND_str_functs);
98 ERR_load_strings(0,RAND_str_reasons);
99 }
100#endif
101 }
diff --git a/src/lib/libcrypto/rand/rand_lib.c b/src/lib/libcrypto/rand/rand_lib.c
deleted file mode 100644
index 5ac0e14caf..0000000000
--- a/src/lib/libcrypto/rand/rand_lib.c
+++ /dev/null
@@ -1,306 +0,0 @@
1/* crypto/rand/rand_lib.c */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
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.
8 *
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).
15 *
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.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
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)"
40 *
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
51 * SUCH DAMAGE.
52 *
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.]
57 */
58
59#include <stdio.h>
60#include <time.h>
61#include "cryptlib.h"
62#include <openssl/rand.h>
63
64#ifndef OPENSSL_NO_ENGINE
65#include <openssl/engine.h>
66#endif
67
68#ifdef OPENSSL_FIPS
69#include <openssl/fips.h>
70#include <openssl/fips_rand.h>
71#endif
72
73#ifndef OPENSSL_NO_ENGINE
74/* non-NULL if default_RAND_meth is ENGINE-provided */
75static ENGINE *funct_ref =NULL;
76#endif
77static const RAND_METHOD *default_RAND_meth = NULL;
78
79int RAND_set_rand_method(const RAND_METHOD *meth)
80 {
81#ifndef OPENSSL_NO_ENGINE
82 if(funct_ref)
83 {
84 ENGINE_finish(funct_ref);
85 funct_ref = NULL;
86 }
87#endif
88 default_RAND_meth = meth;
89 return 1;
90 }
91
92const RAND_METHOD *RAND_get_rand_method(void)
93 {
94 if (!default_RAND_meth)
95 {
96#ifndef OPENSSL_NO_ENGINE
97 ENGINE *e = ENGINE_get_default_RAND();
98 if(e)
99 {
100 default_RAND_meth = ENGINE_get_RAND(e);
101 if(!default_RAND_meth)
102 {
103 ENGINE_finish(e);
104 e = NULL;
105 }
106 }
107 if(e)
108 funct_ref = e;
109 else
110#endif
111 default_RAND_meth = RAND_SSLeay();
112 }
113 return default_RAND_meth;
114 }
115
116#ifndef OPENSSL_NO_ENGINE
117int RAND_set_rand_engine(ENGINE *engine)
118 {
119 const RAND_METHOD *tmp_meth = NULL;
120 if(engine)
121 {
122 if(!ENGINE_init(engine))
123 return 0;
124 tmp_meth = ENGINE_get_RAND(engine);
125 if(!tmp_meth)
126 {
127 ENGINE_finish(engine);
128 return 0;
129 }
130 }
131 /* This function releases any prior ENGINE so call it first */
132 RAND_set_rand_method(tmp_meth);
133 funct_ref = engine;
134 return 1;
135 }
136#endif
137
138void RAND_cleanup(void)
139 {
140 const RAND_METHOD *meth = RAND_get_rand_method();
141 if (meth && meth->cleanup)
142 meth->cleanup();
143 RAND_set_rand_method(NULL);
144 }
145
146void RAND_seed(const void *buf, int num)
147 {
148 const RAND_METHOD *meth = RAND_get_rand_method();
149 if (meth && meth->seed)
150 meth->seed(buf,num);
151 }
152
153void RAND_add(const void *buf, int num, double entropy)
154 {
155 const RAND_METHOD *meth = RAND_get_rand_method();
156 if (meth && meth->add)
157 meth->add(buf,num,entropy);
158 }
159
160int RAND_bytes(unsigned char *buf, int num)
161 {
162 const RAND_METHOD *meth = RAND_get_rand_method();
163 if (meth && meth->bytes)
164 return meth->bytes(buf,num);
165 return(-1);
166 }
167
168int RAND_pseudo_bytes(unsigned char *buf, int num)
169 {
170 const RAND_METHOD *meth = RAND_get_rand_method();
171 if (meth && meth->pseudorand)
172 return meth->pseudorand(buf,num);
173 return(-1);
174 }
175
176int RAND_status(void)
177 {
178 const RAND_METHOD *meth = RAND_get_rand_method();
179 if (meth && meth->status)
180 return meth->status();
181 return 0;
182 }
183
184#ifdef OPENSSL_FIPS
185
186/* FIPS DRBG initialisation code. This sets up the DRBG for use by the
187 * rest of OpenSSL.
188 */
189
190/* Entropy gatherer: use standard OpenSSL PRNG to seed (this will gather
191 * entropy internally through RAND_poll().
192 */
193
194static size_t drbg_get_entropy(DRBG_CTX *ctx, unsigned char **pout,
195 int entropy, size_t min_len, size_t max_len)
196 {
197 /* Round up request to multiple of block size */
198 min_len = ((min_len + 19) / 20) * 20;
199 *pout = OPENSSL_malloc(min_len);
200 if (!*pout)
201 return 0;
202 if (RAND_SSLeay()->bytes(*pout, min_len) <= 0)
203 {
204 OPENSSL_free(*pout);
205 *pout = NULL;
206 return 0;
207 }
208 return min_len;
209 }
210
211static void drbg_free_entropy(DRBG_CTX *ctx, unsigned char *out, size_t olen)
212 {
213 if (out)
214 {
215 OPENSSL_cleanse(out, olen);
216 OPENSSL_free(out);
217 }
218 }
219
220/* Set "additional input" when generating random data. This uses the
221 * current PID, a time value and a counter.
222 */
223
224static size_t drbg_get_adin(DRBG_CTX *ctx, unsigned char **pout)
225 {
226 /* Use of static variables is OK as this happens under a lock */
227 static unsigned char buf[16];
228 static unsigned long counter;
229 FIPS_get_timevec(buf, &counter);
230 *pout = buf;
231 return sizeof(buf);
232 }
233
234/* RAND_add() and RAND_seed() pass through to OpenSSL PRNG so it is
235 * correctly seeded by RAND_poll().
236 */
237
238static int drbg_rand_add(DRBG_CTX *ctx, const void *in, int inlen,
239 double entropy)
240 {
241 RAND_SSLeay()->add(in, inlen, entropy);
242 return 1;
243 }
244
245static int drbg_rand_seed(DRBG_CTX *ctx, const void *in, int inlen)
246 {
247 RAND_SSLeay()->seed(in, inlen);
248 return 1;
249 }
250
251#ifndef OPENSSL_DRBG_DEFAULT_TYPE
252#define OPENSSL_DRBG_DEFAULT_TYPE NID_aes_256_ctr
253#endif
254#ifndef OPENSSL_DRBG_DEFAULT_FLAGS
255#define OPENSSL_DRBG_DEFAULT_FLAGS DRBG_FLAG_CTR_USE_DF
256#endif
257
258static int fips_drbg_type = OPENSSL_DRBG_DEFAULT_TYPE;
259static int fips_drbg_flags = OPENSSL_DRBG_DEFAULT_FLAGS;
260
261void RAND_set_fips_drbg_type(int type, int flags)
262 {
263 fips_drbg_type = type;
264 fips_drbg_flags = flags;
265 }
266
267int RAND_init_fips(void)
268 {
269 DRBG_CTX *dctx;
270 size_t plen;
271 unsigned char pers[32], *p;
272#ifndef OPENSSL_ALLOW_DUAL_EC_DRBG
273 if (fips_drbg_type >> 16)
274 {
275 RANDerr(RAND_F_RAND_INIT_FIPS, RAND_R_DUAL_EC_DRBG_DISABLED);
276 return 0;
277 }
278#endif
279
280 dctx = FIPS_get_default_drbg();
281 if (FIPS_drbg_init(dctx, fips_drbg_type, fips_drbg_flags) <= 0)
282 {
283 RANDerr(RAND_F_RAND_INIT_FIPS, RAND_R_ERROR_INITIALISING_DRBG);
284 return 0;
285 }
286
287 FIPS_drbg_set_callbacks(dctx,
288 drbg_get_entropy, drbg_free_entropy, 20,
289 drbg_get_entropy, drbg_free_entropy);
290 FIPS_drbg_set_rand_callbacks(dctx, drbg_get_adin, 0,
291 drbg_rand_seed, drbg_rand_add);
292 /* Personalisation string: a string followed by date time vector */
293 strcpy((char *)pers, "OpenSSL DRBG2.0");
294 plen = drbg_get_adin(dctx, &p);
295 memcpy(pers + 16, p, plen);
296
297 if (FIPS_drbg_instantiate(dctx, pers, sizeof(pers)) <= 0)
298 {
299 RANDerr(RAND_F_RAND_INIT_FIPS, RAND_R_ERROR_INSTANTIATING_DRBG);
300 return 0;
301 }
302 FIPS_rand_set_method(FIPS_drbg_method());
303 return 1;
304 }
305
306#endif
diff --git a/src/lib/libcrypto/rand/randfile.c b/src/lib/libcrypto/rand/randfile.c
deleted file mode 100644
index 7f1428072d..0000000000
--- a/src/lib/libcrypto/rand/randfile.c
+++ /dev/null
@@ -1,328 +0,0 @@
1/* crypto/rand/randfile.c */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
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.
8 *
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).
15 *
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.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
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)"
40 *
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
51 * SUCH DAMAGE.
52 *
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.]
57 */
58
59/* We need to define this to get macros like S_IFBLK and S_IFCHR */
60#if !defined(OPENSSL_SYS_VXWORKS)
61#define _XOPEN_SOURCE 500
62#endif
63
64#include <errno.h>
65#include <stdio.h>
66#include <stdlib.h>
67#include <string.h>
68
69#include "e_os.h"
70#include <openssl/crypto.h>
71#include <openssl/rand.h>
72#include <openssl/buffer.h>
73
74#ifdef OPENSSL_SYS_VMS
75#include <unixio.h>
76#endif
77#ifndef NO_SYS_TYPES_H
78# include <sys/types.h>
79#endif
80#ifndef OPENSSL_NO_POSIX_IO
81# include <sys/stat.h>
82#endif
83
84#ifdef _WIN32
85#define stat _stat
86#define chmod _chmod
87#define open _open
88#define fdopen _fdopen
89#endif
90
91#undef BUFSIZE
92#define BUFSIZE 1024
93#define RAND_DATA 1024
94
95#ifdef OPENSSL_SYS_VMS
96/* This declaration is a nasty hack to get around vms' extension to fopen
97 * for passing in sharing options being disabled by our /STANDARD=ANSI89 */
98static FILE *(*const vms_fopen)(const char *, const char *, ...) =
99 (FILE *(*)(const char *, const char *, ...))fopen;
100#define VMS_OPEN_ATTRS "shr=get,put,upd,del","ctx=bin,stm","rfm=stm","rat=none","mrs=0"
101#endif
102
103/* #define RFILE ".rnd" - defined in ../../e_os.h */
104
105/* Note that these functions are intended for seed files only.
106 * Entropy devices and EGD sockets are handled in rand_unix.c */
107
108int RAND_load_file(const char *file, long bytes)
109 {
110 /* If bytes >= 0, read up to 'bytes' bytes.
111 * if bytes == -1, read complete file. */
112
113 MS_STATIC unsigned char buf[BUFSIZE];
114#ifndef OPENSSL_NO_POSIX_IO
115 struct stat sb;
116#endif
117 int i,ret=0,n;
118 FILE *in;
119
120 if (file == NULL) return(0);
121
122#ifndef OPENSSL_NO_POSIX_IO
123#ifdef PURIFY
124 /* struct stat can have padding and unused fields that may not be
125 * initialized in the call to stat(). We need to clear the entire
126 * structure before calling RAND_add() to avoid complaints from
127 * applications such as Valgrind.
128 */
129 memset(&sb, 0, sizeof(sb));
130#endif
131 if (stat(file,&sb) < 0) return(0);
132 RAND_add(&sb,sizeof(sb),0.0);
133#endif
134 if (bytes == 0) return(ret);
135
136#ifdef OPENSSL_SYS_VMS
137 in=vms_fopen(file,"rb",VMS_OPEN_ATTRS);
138#else
139 in=fopen(file,"rb");
140#endif
141 if (in == NULL) goto err;
142#if defined(S_IFBLK) && defined(S_IFCHR) && !defined(OPENSSL_NO_POSIX_IO)
143 if (sb.st_mode & (S_IFBLK | S_IFCHR)) {
144 /* this file is a device. we don't want read an infinite number
145 * of bytes from a random device, nor do we want to use buffered
146 * I/O because we will waste system entropy.
147 */
148 bytes = (bytes == -1) ? 2048 : bytes; /* ok, is 2048 enough? */
149#ifndef OPENSSL_NO_SETVBUF_IONBF
150 setvbuf(in, NULL, _IONBF, 0); /* don't do buffered reads */
151#endif /* ndef OPENSSL_NO_SETVBUF_IONBF */
152 }
153#endif
154 for (;;)
155 {
156 if (bytes > 0)
157 n = (bytes < BUFSIZE)?(int)bytes:BUFSIZE;
158 else
159 n = BUFSIZE;
160 i=fread(buf,1,n,in);
161 if (i <= 0) break;
162#ifdef PURIFY
163 RAND_add(buf,i,(double)i);
164#else
165 /* even if n != i, use the full array */
166 RAND_add(buf,n,(double)i);
167#endif
168 ret+=i;
169 if (bytes > 0)
170 {
171 bytes-=n;
172 if (bytes <= 0) break;
173 }
174 }
175 fclose(in);
176 OPENSSL_cleanse(buf,BUFSIZE);
177err:
178 return(ret);
179 }
180
181int RAND_write_file(const char *file)
182 {
183 unsigned char buf[BUFSIZE];
184 int i,ret=0,rand_err=0;
185 FILE *out = NULL;
186 int n;
187#ifndef OPENSSL_NO_POSIX_IO
188 struct stat sb;
189
190 i=stat(file,&sb);
191 if (i != -1) {
192#if defined(S_ISBLK) && defined(S_ISCHR)
193 if (S_ISBLK(sb.st_mode) || S_ISCHR(sb.st_mode)) {
194 /* this file is a device. we don't write back to it.
195 * we "succeed" on the assumption this is some sort
196 * of random device. Otherwise attempting to write to
197 * and chmod the device causes problems.
198 */
199 return(1);
200 }
201#endif
202 }
203#endif
204
205#if defined(O_CREAT) && !defined(OPENSSL_NO_POSIX_IO) && !defined(OPENSSL_SYS_VMS)
206 {
207#ifndef O_BINARY
208#define O_BINARY 0
209#endif
210 /* chmod(..., 0600) is too late to protect the file,
211 * permissions should be restrictive from the start */
212 int fd = open(file, O_WRONLY|O_CREAT|O_BINARY, 0600);
213 if (fd != -1)
214 out = fdopen(fd, "wb");
215 }
216#endif
217
218#ifdef OPENSSL_SYS_VMS
219 /* VMS NOTE: Prior versions of this routine created a _new_
220 * version of the rand file for each call into this routine, then
221 * deleted all existing versions named ;-1, and finally renamed
222 * the current version as ';1'. Under concurrent usage, this
223 * resulted in an RMS race condition in rename() which could
224 * orphan files (see vms message help for RMS$_REENT). With the
225 * fopen() calls below, openssl/VMS now shares the top-level
226 * version of the rand file. Note that there may still be
227 * conditions where the top-level rand file is locked. If so, this
228 * code will then create a new version of the rand file. Without
229 * the delete and rename code, this can result in ascending file
230 * versions that stop at version 32767, and this routine will then
231 * return an error. The remedy for this is to recode the calling
232 * application to avoid concurrent use of the rand file, or
233 * synchronize usage at the application level. Also consider
234 * whether or not you NEED a persistent rand file in a concurrent
235 * use situation.
236 */
237
238 out = vms_fopen(file,"rb+",VMS_OPEN_ATTRS);
239 if (out == NULL)
240 out = vms_fopen(file,"wb",VMS_OPEN_ATTRS);
241#else
242 if (out == NULL)
243 out = fopen(file,"wb");
244#endif
245 if (out == NULL) goto err;
246
247#ifndef NO_CHMOD
248 chmod(file,0600);
249#endif
250 n=RAND_DATA;
251 for (;;)
252 {
253 i=(n > BUFSIZE)?BUFSIZE:n;
254 n-=BUFSIZE;
255 if (RAND_bytes(buf,i) <= 0)
256 rand_err=1;
257 i=fwrite(buf,1,i,out);
258 if (i <= 0)
259 {
260 ret=0;
261 break;
262 }
263 ret+=i;
264 if (n <= 0) break;
265 }
266
267 fclose(out);
268 OPENSSL_cleanse(buf,BUFSIZE);
269err:
270 return (rand_err ? -1 : ret);
271 }
272
273const char *RAND_file_name(char *buf, size_t size)
274 {
275 char *s=NULL;
276#ifdef __OpenBSD__
277 struct stat sb;
278#endif
279
280 if (OPENSSL_issetugid() == 0)
281 s=getenv("RANDFILE");
282 if (s != NULL && *s && strlen(s) + 1 < size)
283 {
284 if (BUF_strlcpy(buf,s,size) >= size)
285 return NULL;
286 }
287 else
288 {
289 if (OPENSSL_issetugid() == 0)
290 s=getenv("HOME");
291#ifdef DEFAULT_HOME
292 if (s == NULL)
293 {
294 s = DEFAULT_HOME;
295 }
296#endif
297 if (s && *s && strlen(s)+strlen(RFILE)+2 < size)
298 {
299 BUF_strlcpy(buf,s,size);
300#ifndef OPENSSL_SYS_VMS
301 BUF_strlcat(buf,"/",size);
302#endif
303 BUF_strlcat(buf,RFILE,size);
304 }
305 else
306 buf[0] = '\0'; /* no file name */
307 }
308
309#ifdef __OpenBSD__
310 /* given that all random loads just fail if the file can't be
311 * seen on a stat, we stat the file we're returning, if it
312 * fails, use /dev/arandom instead. this allows the user to
313 * use their own source for good random data, but defaults
314 * to something hopefully decent if that isn't available.
315 */
316
317 if (!buf[0])
318 if (BUF_strlcpy(buf,"/dev/arandom",size) >= size) {
319 return(NULL);
320 }
321 if (stat(buf,&sb) == -1)
322 if (BUF_strlcpy(buf,"/dev/arandom",size) >= size) {
323 return(NULL);
324 }
325
326#endif
327 return(buf);
328 }
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