diff options
Diffstat (limited to 'openssl/apps/app_rand.c')
| -rw-r--r-- | openssl/apps/app_rand.c | 188 |
1 files changed, 95 insertions, 93 deletions
diff --git a/openssl/apps/app_rand.c b/openssl/apps/app_rand.c index b7b6128c1..595fc7821 100644 --- a/openssl/apps/app_rand.c +++ b/openssl/apps/app_rand.c @@ -5,21 +5,21 @@ * This package is an SSL implementation written * by Eric Young (eay@cryptsoft.com). * The implementation was written so as to conform with Netscapes SSL. - * + * * This library is free for commercial and non-commercial use as long as * the following conditions are aheared to. The following conditions * apply to all code found in this distribution, be it the RC4, RSA, * lhash, DES, etc., code; not just the SSL code. The SSL documentation * included with this distribution is covered by the same copyright terms * except that the holder is Tim Hudson (tjh@cryptsoft.com). - * + * * Copyright remains Eric Young's, and as such any Copyright notices in * the code are not to be removed. * If this package is used in a product, Eric Young should be given attribution * as the author of the parts of the library used. * This can be in the form of a textual message at program startup or * in documentation (online or textual) provided with the package. - * + * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: @@ -34,10 +34,10 @@ * Eric Young (eay@cryptsoft.com)" * The word 'cryptographic' can be left out if the rouines from the library * being used are not cryptographic related :-). - * 4. If you include any Windows specific code (or a derivative thereof) from + * 4. If you include any Windows specific code (or a derivative thereof) from * the apps directory (application code) you must include an acknowledgement: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" - * + * * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE @@ -49,7 +49,7 @@ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. - * + * * The licence and distribution terms for any publically available version or * derivative of this code cannot be changed. i.e. this code cannot simply be * copied and put under another distribution licence @@ -63,7 +63,7 @@ * are met: * * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. + * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in @@ -115,104 +115,106 @@ #include <openssl/bio.h> #include <openssl/rand.h> - static int seeded = 0; static int egdsocket = 0; int app_RAND_load_file(const char *file, BIO *bio_e, int dont_warn) - { - int consider_randfile = (file == NULL); - char buffer[200]; - +{ + int consider_randfile = (file == NULL); + char buffer[200]; + #ifdef OPENSSL_SYS_WINDOWS - BIO_printf(bio_e,"Loading 'screen' into random state -"); - BIO_flush(bio_e); - RAND_screen(); - BIO_printf(bio_e," done\n"); + BIO_printf(bio_e, "Loading 'screen' into random state -"); + BIO_flush(bio_e); + RAND_screen(); + BIO_printf(bio_e, " done\n"); #endif - if (file == NULL) - file = RAND_file_name(buffer, sizeof buffer); - else if (RAND_egd(file) > 0) - { - /* we try if the given filename is an EGD socket. - if it is, we don't write anything back to the file. */ - egdsocket = 1; - return 1; - } - if (file == NULL || !RAND_load_file(file, -1)) - { - if (RAND_status() == 0) - { - if (!dont_warn) - { - BIO_printf(bio_e,"unable to load 'random state'\n"); - BIO_printf(bio_e,"This means that the random number generator has not been seeded\n"); - BIO_printf(bio_e,"with much random data.\n"); - if (consider_randfile) /* explanation does not apply when a file is explicitly named */ - { - BIO_printf(bio_e,"Consider setting the RANDFILE environment variable to point at a file that\n"); - BIO_printf(bio_e,"'random' data can be kept in (the file will be overwritten).\n"); - } - } - return 0; - } - } - seeded = 1; - return 1; - } + if (file == NULL) + file = RAND_file_name(buffer, sizeof buffer); + else if (RAND_egd(file) > 0) { + /* + * we try if the given filename is an EGD socket. if it is, we don't + * write anything back to the file. + */ + egdsocket = 1; + return 1; + } + if (file == NULL || !RAND_load_file(file, -1)) { + if (RAND_status() == 0) { + if (!dont_warn) { + BIO_printf(bio_e, "unable to load 'random state'\n"); + BIO_printf(bio_e, + "This means that the random number generator has not been seeded\n"); + BIO_printf(bio_e, "with much random data.\n"); + if (consider_randfile) { /* explanation does not apply when a + * file is explicitly named */ + BIO_printf(bio_e, + "Consider setting the RANDFILE environment variable to point at a file that\n"); + BIO_printf(bio_e, + "'random' data can be kept in (the file will be overwritten).\n"); + } + } + return 0; + } + } + seeded = 1; + return 1; +} long app_RAND_load_files(char *name) - { - char *p,*n; - int last; - long tot=0; - int egd; - - for (;;) - { - last=0; - for (p=name; ((*p != '\0') && (*p != LIST_SEPARATOR_CHAR)); p++); - if (*p == '\0') last=1; - *p='\0'; - n=name; - name=p+1; - if (*n == '\0') break; +{ + char *p, *n; + int last; + long tot = 0; + int egd; - egd=RAND_egd(n); - if (egd > 0) - tot+=egd; - else - tot+=RAND_load_file(n,-1); - if (last) break; - } - if (tot > 512) - app_RAND_allow_write_file(); - return(tot); - } + for (;;) { + last = 0; + for (p = name; ((*p != '\0') && (*p != LIST_SEPARATOR_CHAR)); p++) ; + if (*p == '\0') + last = 1; + *p = '\0'; + n = name; + name = p + 1; + if (*n == '\0') + break; + + egd = RAND_egd(n); + if (egd > 0) + tot += egd; + else + tot += RAND_load_file(n, -1); + if (last) + break; + } + if (tot > 512) + app_RAND_allow_write_file(); + return (tot); +} int app_RAND_write_file(const char *file, BIO *bio_e) - { - char buffer[200]; - - if (egdsocket || !seeded) - /* If we did not manage to read the seed file, - * we should not write a low-entropy seed file back -- - * it would suppress a crucial warning the next time - * we want to use it. */ - return 0; +{ + char buffer[200]; + + if (egdsocket || !seeded) + /* + * If we did not manage to read the seed file, we should not write a + * low-entropy seed file back -- it would suppress a crucial warning + * the next time we want to use it. + */ + return 0; - if (file == NULL) - file = RAND_file_name(buffer, sizeof buffer); - if (file == NULL || !RAND_write_file(file)) - { - BIO_printf(bio_e,"unable to write 'random state'\n"); - return 0; - } - return 1; - } + if (file == NULL) + file = RAND_file_name(buffer, sizeof buffer); + if (file == NULL || !RAND_write_file(file)) { + BIO_printf(bio_e, "unable to write 'random state'\n"); + return 0; + } + return 1; +} void app_RAND_allow_write_file(void) - { - seeded = 1; - } +{ + seeded = 1; +} |