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1 /* apps/rand.c */ |
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2 /* ==================================================================== |
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3 * Copyright (c) 1998-2001 The OpenSSL Project. All rights reserved. |
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4 * |
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5 * Redistribution and use in source and binary forms, with or without |
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6 * modification, are permitted provided that the following conditions |
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7 * are met: |
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8 * |
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9 * 1. Redistributions of source code must retain the above copyright |
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10 * notice, this list of conditions and the following disclaimer. |
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11 * |
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12 * 2. Redistributions in binary form must reproduce the above copyright |
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13 * notice, this list of conditions and the following disclaimer in |
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14 * the documentation and/or other materials provided with the |
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15 * distribution. |
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16 * |
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17 * 3. All advertising materials mentioning features or use of this |
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18 * software must display the following acknowledgment: |
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19 * "This product includes software developed by the OpenSSL Project |
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20 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" |
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21 * |
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22 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
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23 * endorse or promote products derived from this software without |
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24 * prior written permission. For written permission, please contact |
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25 * openssl-core@openssl.org. |
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26 * |
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27 * 5. Products derived from this software may not be called "OpenSSL" |
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28 * nor may "OpenSSL" appear in their names without prior written |
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29 * permission of the OpenSSL Project. |
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30 * |
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31 * 6. Redistributions of any form whatsoever must retain the following |
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32 * acknowledgment: |
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33 * "This product includes software developed by the OpenSSL Project |
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34 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" |
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35 * |
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36 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
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37 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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39 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
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40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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47 * OF THE POSSIBILITY OF SUCH DAMAGE. |
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48 * ==================================================================== |
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49 * |
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50 * This product includes cryptographic software written by Eric Young |
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51 * (eay@cryptsoft.com). This product includes software written by Tim |
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52 * Hudson (tjh@cryptsoft.com). |
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53 * |
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54 */ |
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55 |
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56 #include "apps.h" |
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57 |
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58 #include <ctype.h> |
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59 #include <stdio.h> |
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60 #include <string.h> |
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61 |
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62 #include <openssl/bio.h> |
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63 #include <openssl/err.h> |
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64 #include <openssl/rand.h> |
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65 |
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66 #undef PROG |
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67 #define PROG rand_main |
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68 |
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69 /* -out file - write to file |
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70 * -rand file:file - PRNG seed files |
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71 * -base64 - encode output |
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72 * num - write 'num' bytes |
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73 */ |
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74 |
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75 |
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76 int MAIN(int, char **); |
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77 |
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78 int MAIN(int argc, char **argv) |
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79 { |
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80 #ifndef OPENSSL_NO_ENGINE |
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81 ENGINE *e = NULL; |
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82 #endif |
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83 int i, r, ret = 1; |
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84 int badopt; |
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85 char *outfile = NULL; |
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86 char *inrand = NULL; |
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87 int base64 = 0; |
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88 BIO *out = NULL; |
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89 int num = -1; |
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90 #ifndef OPENSSL_NO_ENGINE |
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91 char *engine=NULL; |
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92 #endif |
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93 |
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94 apps_startup(); |
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95 |
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96 if (bio_err == NULL) |
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97 if ((bio_err = BIO_new(BIO_s_file())) != NULL) |
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98 BIO_set_fp(bio_err, stderr, BIO_NOCLOSE|BIO_FP_TEXT); |
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99 |
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100 |
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101 if (!load_config(bio_err, NULL)) |
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102 goto err; |
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103 |
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104 badopt = 0; |
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105 i = 0; |
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106 while (!badopt && argv[++i] != NULL) |
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107 { |
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108 if (strcmp(argv[i], "-out") == 0) |
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109 { |
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110 if ((argv[i+1] != NULL) && (outfile == NULL)) |
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111 outfile = argv[++i]; |
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112 else |
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113 badopt = 1; |
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114 } |
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115 #ifndef OPENSSL_NO_ENGINE |
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116 else if (strcmp(argv[i], "-engine") == 0) |
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117 { |
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118 if ((argv[i+1] != NULL) && (engine == NULL)) |
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119 engine = argv[++i]; |
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120 else |
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121 badopt = 1; |
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122 } |
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123 #endif |
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124 else if (strcmp(argv[i], "-rand") == 0) |
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125 { |
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126 if ((argv[i+1] != NULL) && (inrand == NULL)) |
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127 inrand = argv[++i]; |
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128 else |
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129 badopt = 1; |
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130 } |
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131 else if (strcmp(argv[i], "-base64") == 0) |
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132 { |
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133 if (!base64) |
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134 base64 = 1; |
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135 else |
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136 badopt = 1; |
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137 } |
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138 else if (isdigit((unsigned char)argv[i][0])) |
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139 { |
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140 if (num < 0) |
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141 { |
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142 r = sscanf(argv[i], "%d", &num); |
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143 if (r == 0 || num < 0) |
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144 badopt = 1; |
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145 } |
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146 else |
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147 badopt = 1; |
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148 } |
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149 else |
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150 badopt = 1; |
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151 } |
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152 |
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153 if (num < 0) |
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154 badopt = 1; |
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155 |
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156 if (badopt) |
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157 { |
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158 BIO_printf(bio_err, "Usage: rand [options] num\n"); |
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159 BIO_printf(bio_err, "where options are\n"); |
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160 BIO_printf(bio_err, "-out file - write to file\n"); |
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161 #ifndef OPENSSL_NO_ENGINE |
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162 BIO_printf(bio_err, "-engine e - use engine e, possibly a hardware device.\n"); |
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163 #endif |
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164 BIO_printf(bio_err, "-rand file%cfile%c... - seed PRNG from files\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR); |
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165 BIO_printf(bio_err, "-base64 - encode output\n"); |
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166 goto err; |
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167 } |
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168 |
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169 #ifndef OPENSSL_NO_ENGINE |
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170 e = setup_engine(bio_err, engine, 0); |
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171 #endif |
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172 |
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173 app_RAND_load_file(NULL, bio_err, (inrand != NULL)); |
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174 if (inrand != NULL) |
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175 BIO_printf(bio_err,"%ld semi-random bytes loaded\n", |
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176 app_RAND_load_files(inrand)); |
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177 |
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178 out = BIO_new(BIO_s_file()); |
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179 if (out == NULL) |
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180 goto err; |
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181 if (outfile != NULL) |
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182 r = BIO_write_filename(out, outfile); |
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183 else |
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184 { |
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185 r = BIO_set_fp(out, stdout, BIO_NOCLOSE | BIO_FP_TEXT); |
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186 |
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187 #ifdef OPENSSL_SYS_VMS |
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188 { |
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189 BIO *tmpbio = BIO_new(BIO_f_linebuffer()); |
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190 out = BIO_push(tmpbio, out); |
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191 } |
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192 #endif |
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193 } |
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194 if (r <= 0) |
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195 goto err; |
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196 |
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197 if (base64) |
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198 { |
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199 BIO *b64 = BIO_new(BIO_f_base64()); |
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200 if (b64 == NULL) |
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201 goto err; |
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202 out = BIO_push(b64, out); |
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203 } |
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204 |
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205 while (num > 0) |
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206 { |
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207 unsigned char buf[4096]; |
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208 int chunk; |
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209 |
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210 chunk = num; |
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211 if (chunk > (int)sizeof(buf)) |
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212 chunk = sizeof buf; |
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213 r = RAND_bytes(buf, chunk); |
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214 if (r <= 0) |
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215 goto err; |
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216 BIO_write(out, buf, chunk); |
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217 num -= chunk; |
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218 } |
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219 BIO_flush(out); |
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220 |
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221 app_RAND_write_file(NULL, bio_err); |
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222 ret = 0; |
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223 |
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224 err: |
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225 ERR_print_errors(bio_err); |
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226 if (out) |
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227 BIO_free_all(out); |
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228 apps_shutdown(); |
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229 OPENSSL_EXIT(ret); |
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230 } |