projects / thirdparty / openssl.git / blame
| Commit | Line | Data |
|---|---|---|
| 27b78273 BM |
1 | /* apps/rand.c */ |
| 2 | ||
| 3 | #include "apps.h" | |
| 4 | ||
| 5 | #include <ctype.h> | |
| 6 | #include <stdio.h> | |
| 7 | ||
| 8 | #include <openssl/bio.h> | |
| 9 | #include <openssl/err.h> | |
| 10 | #include <openssl/rand.h> | |
| 11 | ||
| 12 | #undef PROG | |
| 13 | #define PROG rand_main | |
| 14 | ||
| 15 | /* -out file - write to file | |
| 16 | * -rand file:file - PRNG seed files | |
| 17 | * -base64 - encode output | |
| 18 | * num - write 'num' bytes | |
| 19 | */ | |
| 20 | ||
| 21 | int MAIN(int, char **); | |
| 22 | ||
| 23 | int MAIN(int argc, char **argv) | |
| 24 | { | |
| 25 | int i, r, ret = 1; | |
| 26 | int badopt; | |
| 27 | char *outfile = NULL; | |
| 28 | char *inrand = NULL; | |
| 29 | int base64 = 0; | |
| 30 | BIO *out = NULL; | |
| 31 | int num = -1; | |
| 32 | ||
| 33 | apps_startup(); | |
| 34 | ||
| 35 | if (bio_err == NULL) | |
| 36 | if ((bio_err = BIO_new(BIO_s_file())) != NULL) | |
| 37 | BIO_set_fp(bio_err, stderr, BIO_NOCLOSE|BIO_FP_TEXT); | |
| 38 | ||
| 39 | badopt = 0; | |
| 40 | i = 0; | |
| 41 | while (!badopt && argv[++i] != NULL) | |
| 42 | { | |
| 43 | if (strcmp(argv[i], "-out") == 0) | |
| 44 | { | |
| 45 | if ((argv[i+1] != NULL) && (outfile == NULL)) | |
| 46 | outfile = argv[++i]; | |
| 47 | else | |
| 48 | badopt = 1; | |
| 49 | } | |
| 50 | else if (strcmp(argv[i], "-rand") == 0) | |
| 51 | { | |
| 52 | if ((argv[i+1] != NULL) && (inrand == NULL)) | |
| 53 | inrand = argv[++i]; | |
| 54 | else | |
| 55 | badopt = 1; | |
| 56 | } | |
| 57 | else if (strcmp(argv[i], "-base64") == 0) | |
| 58 | { | |
| 59 | if (!base64) | |
| 60 | base64 = 1; | |
| 61 | else | |
| 62 | badopt = 1; | |
| 63 | } | |
| 64 | else if (isdigit(argv[i][0])) | |
| 65 | { | |
| 66 | if (num < 0) | |
| 67 | { | |
| 68 | r = sscanf(argv[i], "%d", &num); | |
| 69 | if (r == 0 || num < 0) | |
| 70 | badopt = 1; | |
| 71 | } | |
| 72 | else | |
| 73 | badopt = 1; | |
| 74 | } | |
| 75 | else | |
| 76 | badopt = 1; | |
| 77 | } | |
| 78 | ||
| 79 | if (num < 0) | |
| 80 | badopt = 1; | |
| 81 | ||
| 82 | if (badopt) | |
| 83 | { | |
| 84 | BIO_printf(bio_err, "Usage: rand [options] num\n"); | |
| 85 | BIO_printf(bio_err, "where options are\n"); | |
| 86 | BIO_printf(bio_err, "-out file - write to file\n"); | |
| afbd0746 | 87 | BIO_printf(bio_err, "-rand file%cfile%c... - seed PRNG from files\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR); |
| 27b78273 BM |
88 | BIO_printf(bio_err, "-base64 - encode output\n"); |
| 89 | goto err; | |
| 90 | } | |
| 91 | ||
| 92 | app_RAND_load_file(NULL, bio_err, (inrand != NULL)); | |
| 93 | if (inrand != NULL) | |
| 94 | BIO_printf(bio_err,"%ld semi-random bytes loaded\n", | |
| 95 | app_RAND_load_files(inrand)); | |
| 96 | ||
| 97 | out = BIO_new(BIO_s_file()); | |
| 98 | if (out == NULL) | |
| 99 | goto err; | |
| 100 | if (outfile != NULL) | |
| 101 | r = BIO_write_filename(out, outfile); | |
| 102 | else | |
| 103 | r = BIO_set_fp(out, stdout, BIO_NOCLOSE | BIO_FP_TEXT); | |
| 104 | if (r <= 0) | |
| 105 | goto err; | |
| 106 | ||
| 107 | if (base64) | |
| 108 | { | |
| 109 | BIO *b64 = BIO_new(BIO_f_base64()); | |
| 110 | if (b64 == NULL) | |
| 111 | goto err; | |
| 112 | out = BIO_push(b64, out); | |
| 113 | } | |
| 114 | ||
| 115 | while (num > 0) | |
| 116 | { | |
| 117 | unsigned char buf[4096]; | |
| 118 | int chunk; | |
| 119 | ||
| 120 | chunk = num; | |
| 121 | if (chunk > sizeof buf) | |
| 122 | chunk = sizeof buf; | |
| 123 | r = RAND_bytes(buf, chunk); | |
| 124 | if (r <= 0) | |
| 125 | goto err; | |
| 126 | BIO_write(out, buf, chunk); | |
| 127 | num -= chunk; | |
| 128 | } | |
| 129 | BIO_flush(out); | |
| 130 | ||
| 131 | app_RAND_write_file(NULL, bio_err); | |
| 132 | ret = 0; | |
| 133 | ||
| 134 | err: | |
| 135 | ERR_print_errors(bio_err); | |
| 136 | if (out) | |
| 137 | BIO_free_all(out); | |
| 138 | EXIT(ret); | |
| 139 | } |