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27b78273 | 1 | /* apps/rand.c */ |
a661b653 BM |
2 | /* ==================================================================== |
3 | * Copyright (c) 1998-2001 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 | */ | |
27b78273 BM |
55 | |
56 | #include "apps.h" | |
57 | ||
58 | #include <ctype.h> | |
59 | #include <stdio.h> | |
8824ec7c | 60 | #include <string.h> |
27b78273 BM |
61 | |
62 | #include <openssl/bio.h> | |
63 | #include <openssl/err.h> | |
64 | #include <openssl/rand.h> | |
65 | ||
66 | #undef PROG | |
67 | #define PROG rand_main | |
68 | ||
69 | /* -out file - write to file | |
70 | * -rand file:file - PRNG seed files | |
71 | * -base64 - encode output | |
72 | * num - write 'num' bytes | |
73 | */ | |
74 | ||
75 | int MAIN(int, char **); | |
76 | ||
77 | int MAIN(int argc, char **argv) | |
78 | { | |
0b13e9f0 | 79 | #ifndef OPENSSL_NO_ENGINE |
5270e702 | 80 | ENGINE *e = NULL; |
0b13e9f0 | 81 | #endif |
27b78273 BM |
82 | int i, r, ret = 1; |
83 | int badopt; | |
84 | char *outfile = NULL; | |
f365611c | 85 | char *inrand = NULL; |
27b78273 BM |
86 | int base64 = 0; |
87 | BIO *out = NULL; | |
88 | int num = -1; | |
0b13e9f0 | 89 | #ifndef OPENSSL_NO_ENGINE |
5270e702 | 90 | char *engine=NULL; |
0b13e9f0 | 91 | #endif |
27b78273 BM |
92 | |
93 | apps_startup(); | |
94 | ||
95 | if (bio_err == NULL) | |
96 | if ((bio_err = BIO_new(BIO_s_file())) != NULL) | |
97 | BIO_set_fp(bio_err, stderr, BIO_NOCLOSE|BIO_FP_TEXT); | |
98 | ||
3647bee2 DSH |
99 | if (!load_config(bio_err, NULL)) |
100 | goto err; | |
101 | ||
27b78273 BM |
102 | badopt = 0; |
103 | i = 0; | |
104 | while (!badopt && argv[++i] != NULL) | |
105 | { | |
106 | if (strcmp(argv[i], "-out") == 0) | |
107 | { | |
108 | if ((argv[i+1] != NULL) && (outfile == NULL)) | |
109 | outfile = argv[++i]; | |
110 | else | |
111 | badopt = 1; | |
112 | } | |
0b13e9f0 | 113 | #ifndef OPENSSL_NO_ENGINE |
73fc98a7 | 114 | else if (strcmp(argv[i], "-engine") == 0) |
5270e702 RL |
115 | { |
116 | if ((argv[i+1] != NULL) && (engine == NULL)) | |
117 | engine = argv[++i]; | |
118 | else | |
119 | badopt = 1; | |
120 | } | |
0b13e9f0 | 121 | #endif |
27b78273 BM |
122 | else if (strcmp(argv[i], "-rand") == 0) |
123 | { | |
124 | if ((argv[i+1] != NULL) && (inrand == NULL)) | |
125 | inrand = argv[++i]; | |
126 | else | |
127 | badopt = 1; | |
128 | } | |
129 | else if (strcmp(argv[i], "-base64") == 0) | |
130 | { | |
131 | if (!base64) | |
132 | base64 = 1; | |
133 | else | |
134 | badopt = 1; | |
135 | } | |
d9586857 | 136 | else if (isdigit((unsigned char)argv[i][0])) |
27b78273 BM |
137 | { |
138 | if (num < 0) | |
139 | { | |
140 | r = sscanf(argv[i], "%d", &num); | |
141 | if (r == 0 || num < 0) | |
142 | badopt = 1; | |
143 | } | |
144 | else | |
145 | badopt = 1; | |
146 | } | |
147 | else | |
148 | badopt = 1; | |
149 | } | |
150 | ||
151 | if (num < 0) | |
152 | badopt = 1; | |
153 | ||
154 | if (badopt) | |
155 | { | |
156 | BIO_printf(bio_err, "Usage: rand [options] num\n"); | |
157 | BIO_printf(bio_err, "where options are\n"); | |
5270e702 | 158 | BIO_printf(bio_err, "-out file - write to file\n"); |
0b13e9f0 | 159 | #ifndef OPENSSL_NO_ENGINE |
1613c4d3 | 160 | BIO_printf(bio_err, "-engine e - use engine e, possibly a hardware device.\n"); |
0b13e9f0 | 161 | #endif |
5270e702 RL |
162 | BIO_printf(bio_err, "-rand file%cfile%c... - seed PRNG from files\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR); |
163 | BIO_printf(bio_err, "-base64 - encode output\n"); | |
27b78273 BM |
164 | goto err; |
165 | } | |
166 | ||
0b13e9f0 | 167 | #ifndef OPENSSL_NO_ENGINE |
531d630b | 168 | e = setup_engine(bio_err, engine, 0); |
0b13e9f0 | 169 | #endif |
5270e702 | 170 | |
f365611c | 171 | app_RAND_load_file(NULL, bio_err, (inrand != NULL)); |
27b78273 BM |
172 | if (inrand != NULL) |
173 | BIO_printf(bio_err,"%ld semi-random bytes loaded\n", | |
174 | app_RAND_load_files(inrand)); | |
175 | ||
176 | out = BIO_new(BIO_s_file()); | |
177 | if (out == NULL) | |
178 | goto err; | |
179 | if (outfile != NULL) | |
180 | r = BIO_write_filename(out, outfile); | |
181 | else | |
645749ef | 182 | { |
27b78273 | 183 | r = BIO_set_fp(out, stdout, BIO_NOCLOSE | BIO_FP_TEXT); |
bc36ee62 | 184 | #ifdef OPENSSL_SYS_VMS |
645749ef RL |
185 | { |
186 | BIO *tmpbio = BIO_new(BIO_f_linebuffer()); | |
187 | out = BIO_push(tmpbio, out); | |
188 | } | |
189 | #endif | |
190 | } | |
27b78273 BM |
191 | if (r <= 0) |
192 | goto err; | |
193 | ||
194 | if (base64) | |
195 | { | |
196 | BIO *b64 = BIO_new(BIO_f_base64()); | |
197 | if (b64 == NULL) | |
198 | goto err; | |
199 | out = BIO_push(b64, out); | |
200 | } | |
201 | ||
202 | while (num > 0) | |
203 | { | |
204 | unsigned char buf[4096]; | |
205 | int chunk; | |
206 | ||
207 | chunk = num; | |
208 | if (chunk > sizeof buf) | |
209 | chunk = sizeof buf; | |
210 | r = RAND_bytes(buf, chunk); | |
211 | if (r <= 0) | |
212 | goto err; | |
213 | BIO_write(out, buf, chunk); | |
214 | num -= chunk; | |
215 | } | |
216 | BIO_flush(out); | |
217 | ||
218 | app_RAND_write_file(NULL, bio_err); | |
219 | ret = 0; | |
220 | ||
221 | err: | |
222 | ERR_print_errors(bio_err); | |
223 | if (out) | |
224 | BIO_free_all(out); | |
c04f8cf4 | 225 | apps_shutdown(); |
1c3e4a36 | 226 | OPENSSL_EXIT(ret); |
27b78273 | 227 | } |