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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 | |
ae5c8664 | 10 | * notice, this list of conditions and the following disclaimer. |
a661b653 BM |
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 | ||
6977c7e2 TH |
69 | /*- |
70 | * -out file - write to file | |
27b78273 | 71 | * -rand file:file - PRNG seed files |
7ca1cfba BM |
72 | * -base64 - base64 encode output |
73 | * -hex - hex encode output | |
27b78273 BM |
74 | * num - write 'num' bytes |
75 | */ | |
76 | ||
77 | int MAIN(int, char **); | |
78 | ||
79 | int MAIN(int argc, char **argv) | |
ae5c8664 MC |
80 | { |
81 | int i, r, ret = 1; | |
82 | int badopt; | |
83 | char *outfile = NULL; | |
84 | char *inrand = NULL; | |
85 | int base64 = 0; | |
86 | int hex = 0; | |
87 | BIO *out = NULL; | |
88 | int num = -1; | |
0b13e9f0 | 89 | #ifndef OPENSSL_NO_ENGINE |
ae5c8664 | 90 | char *engine = NULL; |
0b13e9f0 | 91 | #endif |
27b78273 | 92 | |
ae5c8664 MC |
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 | ||
99 | if (!load_config(bio_err, NULL)) | |
100 | goto err; | |
101 | ||
102 | badopt = 0; | |
103 | i = 0; | |
104 | while (!badopt && argv[++i] != NULL) { | |
105 | if (strcmp(argv[i], "-out") == 0) { | |
106 | if ((argv[i + 1] != NULL) && (outfile == NULL)) | |
107 | outfile = argv[++i]; | |
108 | else | |
109 | badopt = 1; | |
110 | } | |
0b13e9f0 | 111 | #ifndef OPENSSL_NO_ENGINE |
ae5c8664 MC |
112 | else if (strcmp(argv[i], "-engine") == 0) { |
113 | if ((argv[i + 1] != NULL) && (engine == NULL)) | |
114 | engine = argv[++i]; | |
115 | else | |
116 | badopt = 1; | |
117 | } | |
0b13e9f0 | 118 | #endif |
ae5c8664 MC |
119 | else if (strcmp(argv[i], "-rand") == 0) { |
120 | if ((argv[i + 1] != NULL) && (inrand == NULL)) | |
121 | inrand = argv[++i]; | |
122 | else | |
123 | badopt = 1; | |
124 | } else if (strcmp(argv[i], "-base64") == 0) { | |
125 | if (!base64) | |
126 | base64 = 1; | |
127 | else | |
128 | badopt = 1; | |
129 | } else if (strcmp(argv[i], "-hex") == 0) { | |
130 | if (!hex) | |
131 | hex = 1; | |
132 | else | |
133 | badopt = 1; | |
134 | } else if (isdigit((unsigned char)argv[i][0])) { | |
135 | if (num < 0) { | |
136 | r = sscanf(argv[i], "%d", &num); | |
137 | if (r == 0 || num < 0) | |
138 | badopt = 1; | |
139 | } else | |
140 | badopt = 1; | |
141 | } else | |
142 | badopt = 1; | |
143 | } | |
144 | ||
145 | if (hex && base64) | |
146 | badopt = 1; | |
147 | ||
148 | if (num < 0) | |
149 | badopt = 1; | |
150 | ||
151 | if (badopt) { | |
152 | BIO_printf(bio_err, "Usage: rand [options] num\n"); | |
153 | BIO_printf(bio_err, "where options are\n"); | |
154 | BIO_printf(bio_err, "-out file - write to file\n"); | |
0b13e9f0 | 155 | #ifndef OPENSSL_NO_ENGINE |
ae5c8664 MC |
156 | BIO_printf(bio_err, |
157 | "-engine e - use engine e, possibly a hardware device.\n"); | |
0b13e9f0 | 158 | #endif |
ae5c8664 MC |
159 | BIO_printf(bio_err, "-rand file%cfile%c... - seed PRNG from files\n", |
160 | LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR); | |
161 | BIO_printf(bio_err, "-base64 - base64 encode output\n"); | |
162 | BIO_printf(bio_err, "-hex - hex encode output\n"); | |
163 | goto err; | |
164 | } | |
0b13e9f0 | 165 | #ifndef OPENSSL_NO_ENGINE |
ae5c8664 | 166 | setup_engine(bio_err, engine, 0); |
0b13e9f0 | 167 | #endif |
5270e702 | 168 | |
ae5c8664 MC |
169 | app_RAND_load_file(NULL, bio_err, (inrand != NULL)); |
170 | if (inrand != NULL) | |
171 | BIO_printf(bio_err, "%ld semi-random bytes loaded\n", | |
172 | app_RAND_load_files(inrand)); | |
173 | ||
174 | out = BIO_new(BIO_s_file()); | |
175 | if (out == NULL) | |
176 | goto err; | |
177 | if (outfile != NULL) | |
178 | r = BIO_write_filename(out, outfile); | |
179 | else { | |
180 | r = BIO_set_fp(out, stdout, BIO_NOCLOSE | BIO_FP_TEXT); | |
bc36ee62 | 181 | #ifdef OPENSSL_SYS_VMS |
ae5c8664 MC |
182 | { |
183 | BIO *tmpbio = BIO_new(BIO_f_linebuffer()); | |
184 | out = BIO_push(tmpbio, out); | |
185 | } | |
645749ef | 186 | #endif |
ae5c8664 MC |
187 | } |
188 | if (r <= 0) | |
189 | goto err; | |
190 | ||
191 | if (base64) { | |
192 | BIO *b64 = BIO_new(BIO_f_base64()); | |
193 | if (b64 == NULL) | |
194 | goto err; | |
195 | out = BIO_push(b64, out); | |
196 | } | |
197 | ||
198 | while (num > 0) { | |
199 | unsigned char buf[4096]; | |
200 | int chunk; | |
201 | ||
202 | chunk = num; | |
203 | if (chunk > (int)sizeof(buf)) | |
204 | chunk = sizeof buf; | |
205 | r = RAND_bytes(buf, chunk); | |
206 | if (r <= 0) | |
207 | goto err; | |
208 | if (!hex) | |
209 | BIO_write(out, buf, chunk); | |
210 | else { | |
211 | for (i = 0; i < chunk; i++) | |
212 | BIO_printf(out, "%02x", buf[i]); | |
213 | } | |
214 | num -= chunk; | |
215 | } | |
216 | if (hex) | |
217 | BIO_puts(out, "\n"); | |
218 | (void)BIO_flush(out); | |
219 | ||
220 | app_RAND_write_file(NULL, bio_err); | |
221 | ret = 0; | |
222 | ||
223 | err: | |
224 | ERR_print_errors(bio_err); | |
225 | if (out) | |
226 | BIO_free_all(out); | |
227 | apps_shutdown(); | |
228 | OPENSSL_EXIT(ret); | |
229 | } |