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| 1 /* apps/app_rand.c */ | |
| 2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) | |
| 3 * All rights reserved. | |
| 4 * | |
| 5 * This package is an SSL implementation written | |
| 6 * by Eric Young (eay@cryptsoft.com). | |
| 7 * The implementation was written so as to conform with Netscapes SSL. | |
| 8 * | |
| 9 * This library is free for commercial and non-commercial use as long as | |
| 10 * the following conditions are aheared to. The following conditions | |
| 11 * apply to all code found in this distribution, be it the RC4, RSA, | |
| 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
| 13 * included with this distribution is covered by the same copyright terms | |
| 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
| 15 * | |
| 16 * Copyright remains Eric Young's, and as such any Copyright notices in | |
| 17 * the code are not to be removed. | |
| 18 * If this package is used in a product, Eric Young should be given attribution | |
| 19 * as the author of the parts of the library used. | |
| 20 * This can be in the form of a textual message at program startup or | |
| 21 * in documentation (online or textual) provided with the package. | |
| 22 * | |
| 23 * Redistribution and use in source and binary forms, with or without | |
| 24 * modification, are permitted provided that the following conditions | |
| 25 * are met: | |
| 26 * 1. Redistributions of source code must retain the copyright | |
| 27 * notice, this list of conditions and the following disclaimer. | |
| 28 * 2. Redistributions in binary form must reproduce the above copyright | |
| 29 * notice, this list of conditions and the following disclaimer in the | |
| 30 * documentation and/or other materials provided with the distribution. | |
| 31 * 3. All advertising materials mentioning features or use of this software | |
| 32 * must display the following acknowledgement: | |
| 33 * "This product includes cryptographic software written by | |
| 34 * Eric Young (eay@cryptsoft.com)" | |
| 35 * The word 'cryptographic' can be left out if the rouines from the library | |
| 36 * being used are not cryptographic related :-). | |
| 37 * 4. If you include any Windows specific code (or a derivative thereof) from | |
| 38 * the apps directory (application code) you must include an acknowledgement: | |
| 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
| 40 * | |
| 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | |
| 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
| 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 51 * SUCH DAMAGE. | |
| 52 * | |
| 53 * The licence and distribution terms for any publically available version or | |
| 54 * derivative of this code cannot be changed. i.e. this code cannot simply be | |
| 55 * copied and put under another distribution licence | |
| 56 * [including the GNU Public Licence.] | |
| 57 */ | |
| 58 /* ==================================================================== | |
| 59 * Copyright (c) 1998-2000 The OpenSSL Project. All rights reserved. | |
| 60 * | |
| 61 * Redistribution and use in source and binary forms, with or without | |
| 62 * modification, are permitted provided that the following conditions | |
| 63 * are met: | |
| 64 * | |
| 65 * 1. Redistributions of source code must retain the above copyright | |
| 66 * notice, this list of conditions and the following disclaimer. | |
| 67 * | |
| 68 * 2. Redistributions in binary form must reproduce the above copyright | |
| 69 * notice, this list of conditions and the following disclaimer in | |
| 70 * the documentation and/or other materials provided with the | |
| 71 * distribution. | |
| 72 * | |
| 73 * 3. All advertising materials mentioning features or use of this | |
| 74 * software must display the following acknowledgment: | |
| 75 * "This product includes software developed by the OpenSSL Project | |
| 76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" | |
| 77 * | |
| 78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
| 79 * endorse or promote products derived from this software without | |
| 80 * prior written permission. For written permission, please contact | |
| 81 * openssl-core@openssl.org. | |
| 82 * | |
| 83 * 5. Products derived from this software may not be called "OpenSSL" | |
| 84 * nor may "OpenSSL" appear in their names without prior written | |
| 85 * permission of the OpenSSL Project. | |
| 86 * | |
| 87 * 6. Redistributions of any form whatsoever must retain the following | |
| 88 * acknowledgment: | |
| 89 * "This product includes software developed by the OpenSSL Project | |
| 90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" | |
| 91 * | |
| 92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
| 93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
| 96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
| 98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
| 99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
| 101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
| 103 * OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 104 * ==================================================================== | |
| 105 * | |
| 106 * This product includes cryptographic software written by Eric Young | |
| 107 * (eay@cryptsoft.com). This product includes software written by Tim | |
| 108 * Hudson (tjh@cryptsoft.com). | |
| 109 * | |
| 110 */ | |
| 111 | |
| 112 #define NON_MAIN | |
| 113 #include "apps.h" | |
| 114 #undef NON_MAIN | |
| 115 #include <openssl/bio.h> | |
| 116 #include <openssl/rand.h> | |
| 117 | |
| 118 | |
| 119 static int seeded = 0; | |
| 120 static int egdsocket = 0; | |
| 121 | |
| 122 int app_RAND_load_file(const char *file, BIO *bio_e, int dont_warn) | |
| 123 { | |
| 124 int consider_randfile = (file == NULL); | |
| 125 char buffer[200]; | |
| 126 | |
| 127 #ifdef OPENSSL_SYS_WINDOWS | |
| 128 BIO_printf(bio_e,"Loading 'screen' into random state -"); | |
| 129 BIO_flush(bio_e); | |
| 130 RAND_screen(); | |
| 131 BIO_printf(bio_e," done\n"); | |
| 132 #endif | |
| 133 | |
| 134 if (file == NULL) | |
| 135 file = RAND_file_name(buffer, sizeof buffer); | |
| 136 else if (RAND_egd(file) > 0) | |
| 137 { | |
| 138 /* we try if the given filename is an EGD socket. | |
| 139 if it is, we don't write anything back to the file. */ | |
| 140 egdsocket = 1; | |
| 141 return 1; | |
| 142 } | |
| 143 if (file == NULL || !RAND_load_file(file, -1)) | |
| 144 { | |
| 145 if (RAND_status() == 0) | |
| 146 { | |
| 147 if (!dont_warn) | |
| 148 { | |
| 149 BIO_printf(bio_e,"unable to load 'random state'\
n"); | |
| 150 BIO_printf(bio_e,"This means that the random num
ber generator has not been seeded\n"); | |
| 151 BIO_printf(bio_e,"with much random data.\n"); | |
| 152 if (consider_randfile) /* explanation does not a
pply when a file is explicitly named */ | |
| 153 { | |
| 154 BIO_printf(bio_e,"Consider setting the R
ANDFILE environment variable to point at a file that\n"); | |
| 155 BIO_printf(bio_e,"'random' data can be k
ept in (the file will be overwritten).\n"); | |
| 156 } | |
| 157 } | |
| 158 return 0; | |
| 159 } | |
| 160 } | |
| 161 seeded = 1; | |
| 162 return 1; | |
| 163 } | |
| 164 | |
| 165 long app_RAND_load_files(char *name) | |
| 166 { | |
| 167 char *p,*n; | |
| 168 int last; | |
| 169 long tot=0; | |
| 170 int egd; | |
| 171 | |
| 172 for (;;) | |
| 173 { | |
| 174 last=0; | |
| 175 for (p=name; ((*p != '\0') && (*p != LIST_SEPARATOR_CHAR)); p++)
; | |
| 176 if (*p == '\0') last=1; | |
| 177 *p='\0'; | |
| 178 n=name; | |
| 179 name=p+1; | |
| 180 if (*n == '\0') break; | |
| 181 | |
| 182 egd=RAND_egd(n); | |
| 183 if (egd > 0) | |
| 184 tot+=egd; | |
| 185 else | |
| 186 tot+=RAND_load_file(n,-1); | |
| 187 if (last) break; | |
| 188 } | |
| 189 if (tot > 512) | |
| 190 app_RAND_allow_write_file(); | |
| 191 return(tot); | |
| 192 } | |
| 193 | |
| 194 int app_RAND_write_file(const char *file, BIO *bio_e) | |
| 195 { | |
| 196 char buffer[200]; | |
| 197 | |
| 198 if (egdsocket || !seeded) | |
| 199 /* If we did not manage to read the seed file, | |
| 200 * we should not write a low-entropy seed file back -- | |
| 201 * it would suppress a crucial warning the next time | |
| 202 * we want to use it. */ | |
| 203 return 0; | |
| 204 | |
| 205 if (file == NULL) | |
| 206 file = RAND_file_name(buffer, sizeof buffer); | |
| 207 if (file == NULL || !RAND_write_file(file)) | |
| 208 { | |
| 209 BIO_printf(bio_e,"unable to write 'random state'\n"); | |
| 210 return 0; | |
| 211 } | |
| 212 return 1; | |
| 213 } | |
| 214 | |
| 215 void app_RAND_allow_write_file(void) | |
| 216 { | |
| 217 seeded = 1; | |
| 218 } | |
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Chromium Code Reviews
Issue 2072073002:
Delete bundled copy of OpenSSL and replace with README. (Closed)
Base URL: https://chromium.googlesource.com/chromium/deps/openssl@master