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846e33c7 | 1 | /* |
6738bf14 | 2 | * Copyright 1998-2018 The OpenSSL Project Authors. All Rights Reserved. |
a661b653 | 3 | * |
846e33c7 RS |
4 | * Licensed under the OpenSSL license (the "License"). You may not use |
5 | * this file except in compliance with the License. You can obtain a copy | |
6 | * in the file LICENSE in the source distribution or at | |
7 | * https://www.openssl.org/source/license.html | |
a661b653 | 8 | */ |
27b78273 BM |
9 | |
10 | #include "apps.h" | |
dab2cd68 | 11 | #include "progs.h" |
27b78273 BM |
12 | |
13 | #include <ctype.h> | |
14 | #include <stdio.h> | |
8824ec7c | 15 | #include <string.h> |
27b78273 BM |
16 | |
17 | #include <openssl/bio.h> | |
18 | #include <openssl/err.h> | |
19 | #include <openssl/rand.h> | |
20 | ||
7e1b7485 RS |
21 | typedef enum OPTION_choice { |
22 | OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, | |
3ee1eac2 RS |
23 | OPT_OUT, OPT_ENGINE, OPT_BASE64, OPT_HEX, |
24 | OPT_R_ENUM | |
7e1b7485 RS |
25 | } OPTION_CHOICE; |
26 | ||
44c83ebd | 27 | const OPTIONS rand_options[] = { |
7e1b7485 RS |
28 | {OPT_HELP_STR, 1, '-', "Usage: %s [flags] num\n"}, |
29 | {OPT_HELP_STR, 1, '-', "Valid options are:\n"}, | |
30 | {"help", OPT_HELP, '-', "Display this summary"}, | |
31 | {"out", OPT_OUT, '>', "Output file"}, | |
3ee1eac2 | 32 | OPT_R_OPTIONS, |
7e1b7485 RS |
33 | {"base64", OPT_BASE64, '-', "Base64 encode output"}, |
34 | {"hex", OPT_HEX, '-', "Hex encode output"}, | |
0b13e9f0 | 35 | #ifndef OPENSSL_NO_ENGINE |
7e1b7485 | 36 | {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"}, |
0b13e9f0 | 37 | #endif |
7e1b7485 RS |
38 | {NULL} |
39 | }; | |
27b78273 | 40 | |
7e1b7485 RS |
41 | int rand_main(int argc, char **argv) |
42 | { | |
dd1abd44 | 43 | ENGINE *e = NULL; |
7e1b7485 | 44 | BIO *out = NULL; |
3ee1eac2 | 45 | char *outfile = NULL, *prog; |
7e1b7485 | 46 | OPTION_CHOICE o; |
bdd58d98 | 47 | int format = FORMAT_BINARY, i, num = -1, r, ret = 1; |
7e1b7485 RS |
48 | |
49 | prog = opt_init(argc, argv, rand_options); | |
50 | while ((o = opt_next()) != OPT_EOF) { | |
51 | switch (o) { | |
52 | case OPT_EOF: | |
53 | case OPT_ERR: | |
54 | opthelp: | |
55 | BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); | |
56 | goto end; | |
57 | case OPT_HELP: | |
58 | opt_help(rand_options); | |
59 | ret = 0; | |
60 | goto end; | |
61 | case OPT_OUT: | |
62 | outfile = opt_arg(); | |
63 | break; | |
64 | case OPT_ENGINE: | |
dd1abd44 | 65 | e = setup_engine(opt_arg(), 0); |
7e1b7485 | 66 | break; |
3ee1eac2 RS |
67 | case OPT_R_CASES: |
68 | if (!opt_rand(o)) | |
69 | goto end; | |
7e1b7485 RS |
70 | break; |
71 | case OPT_BASE64: | |
bdd58d98 | 72 | format = FORMAT_BASE64; |
7e1b7485 RS |
73 | break; |
74 | case OPT_HEX: | |
bdd58d98 | 75 | format = FORMAT_TEXT; |
7e1b7485 | 76 | break; |
0f113f3e | 77 | } |
0f113f3e | 78 | } |
7e1b7485 RS |
79 | argc = opt_num_rest(); |
80 | argv = opt_rest(); | |
c27363f5 RS |
81 | if (argc == 1) { |
82 | if (!opt_int(argv[0], &num) || num <= 0) | |
83 | goto end; | |
84 | } else if (argc > 0) { | |
85 | BIO_printf(bio_err, "Extra arguments given.\n"); | |
7e1b7485 | 86 | goto opthelp; |
c27363f5 | 87 | } |
0f113f3e | 88 | |
bdd58d98 | 89 | out = bio_open_default(outfile, 'w', format); |
0f113f3e | 90 | if (out == NULL) |
7e1b7485 | 91 | goto end; |
0f113f3e | 92 | |
bdd58d98 | 93 | if (format == FORMAT_BASE64) { |
0f113f3e MC |
94 | BIO *b64 = BIO_new(BIO_f_base64()); |
95 | if (b64 == NULL) | |
7e1b7485 | 96 | goto end; |
0f113f3e MC |
97 | out = BIO_push(b64, out); |
98 | } | |
99 | ||
100 | while (num > 0) { | |
101 | unsigned char buf[4096]; | |
102 | int chunk; | |
103 | ||
104 | chunk = num; | |
105 | if (chunk > (int)sizeof(buf)) | |
cbe29648 | 106 | chunk = sizeof(buf); |
0f113f3e MC |
107 | r = RAND_bytes(buf, chunk); |
108 | if (r <= 0) | |
7e1b7485 | 109 | goto end; |
0f91e1df RS |
110 | if (format != FORMAT_TEXT) { |
111 | if (BIO_write(out, buf, chunk) != chunk) | |
112 | goto end; | |
113 | } else { | |
0f113f3e | 114 | for (i = 0; i < chunk; i++) |
0f91e1df RS |
115 | if (BIO_printf(out, "%02x", buf[i]) != 2) |
116 | goto end; | |
0f113f3e MC |
117 | } |
118 | num -= chunk; | |
119 | } | |
bdd58d98 | 120 | if (format == FORMAT_TEXT) |
0f113f3e | 121 | BIO_puts(out, "\n"); |
3ee1eac2 | 122 | if (BIO_flush(out) <= 0) |
0f91e1df | 123 | goto end; |
0f113f3e | 124 | |
0f113f3e MC |
125 | ret = 0; |
126 | ||
7e1b7485 | 127 | end: |
0f91e1df RS |
128 | if (ret != 0) |
129 | ERR_print_errors(bio_err); | |
dd1abd44 | 130 | release_engine(e); |
ca3a82c3 | 131 | BIO_free_all(out); |
26a7d938 | 132 | return ret; |
0f113f3e | 133 | } |