mirror of
https://github.com/openssl/openssl.git
synced 2024-11-21 01:15:20 +08:00
141 lines
2.6 KiB
C
141 lines
2.6 KiB
C
/* apps/rand.c */
|
|
|
|
#include "apps.h"
|
|
|
|
#include <ctype.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#include <openssl/bio.h>
|
|
#include <openssl/err.h>
|
|
#include <openssl/rand.h>
|
|
|
|
#undef PROG
|
|
#define PROG rand_main
|
|
|
|
/* -out file - write to file
|
|
* -rand file:file - PRNG seed files
|
|
* -base64 - encode output
|
|
* num - write 'num' bytes
|
|
*/
|
|
|
|
int MAIN(int, char **);
|
|
|
|
int MAIN(int argc, char **argv)
|
|
{
|
|
int i, r, ret = 1;
|
|
int badopt;
|
|
char *outfile = NULL;
|
|
char *inrand = NULL;
|
|
int base64 = 0;
|
|
BIO *out = NULL;
|
|
int num = -1;
|
|
|
|
apps_startup();
|
|
|
|
if (bio_err == NULL)
|
|
if ((bio_err = BIO_new(BIO_s_file())) != NULL)
|
|
BIO_set_fp(bio_err, stderr, BIO_NOCLOSE|BIO_FP_TEXT);
|
|
|
|
badopt = 0;
|
|
i = 0;
|
|
while (!badopt && argv[++i] != NULL)
|
|
{
|
|
if (strcmp(argv[i], "-out") == 0)
|
|
{
|
|
if ((argv[i+1] != NULL) && (outfile == NULL))
|
|
outfile = argv[++i];
|
|
else
|
|
badopt = 1;
|
|
}
|
|
else if (strcmp(argv[i], "-rand") == 0)
|
|
{
|
|
if ((argv[i+1] != NULL) && (inrand == NULL))
|
|
inrand = argv[++i];
|
|
else
|
|
badopt = 1;
|
|
}
|
|
else if (strcmp(argv[i], "-base64") == 0)
|
|
{
|
|
if (!base64)
|
|
base64 = 1;
|
|
else
|
|
badopt = 1;
|
|
}
|
|
else if (isdigit((unsigned char)argv[i][0]))
|
|
{
|
|
if (num < 0)
|
|
{
|
|
r = sscanf(argv[i], "%d", &num);
|
|
if (r == 0 || num < 0)
|
|
badopt = 1;
|
|
}
|
|
else
|
|
badopt = 1;
|
|
}
|
|
else
|
|
badopt = 1;
|
|
}
|
|
|
|
if (num < 0)
|
|
badopt = 1;
|
|
|
|
if (badopt)
|
|
{
|
|
BIO_printf(bio_err, "Usage: rand [options] num\n");
|
|
BIO_printf(bio_err, "where options are\n");
|
|
BIO_printf(bio_err, "-out file - write to file\n");
|
|
BIO_printf(bio_err, "-rand file%cfile%c... - seed PRNG from files\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
|
|
BIO_printf(bio_err, "-base64 - encode output\n");
|
|
goto err;
|
|
}
|
|
|
|
app_RAND_load_file(NULL, bio_err, (inrand != NULL));
|
|
if (inrand != NULL)
|
|
BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
|
|
app_RAND_load_files(inrand));
|
|
|
|
out = BIO_new(BIO_s_file());
|
|
if (out == NULL)
|
|
goto err;
|
|
if (outfile != NULL)
|
|
r = BIO_write_filename(out, outfile);
|
|
else
|
|
r = BIO_set_fp(out, stdout, BIO_NOCLOSE | BIO_FP_TEXT);
|
|
if (r <= 0)
|
|
goto err;
|
|
|
|
if (base64)
|
|
{
|
|
BIO *b64 = BIO_new(BIO_f_base64());
|
|
if (b64 == NULL)
|
|
goto err;
|
|
out = BIO_push(b64, out);
|
|
}
|
|
|
|
while (num > 0)
|
|
{
|
|
unsigned char buf[4096];
|
|
int chunk;
|
|
|
|
chunk = num;
|
|
if (chunk > sizeof buf)
|
|
chunk = sizeof buf;
|
|
r = RAND_bytes(buf, chunk);
|
|
if (r <= 0)
|
|
goto err;
|
|
BIO_write(out, buf, chunk);
|
|
num -= chunk;
|
|
}
|
|
BIO_flush(out);
|
|
|
|
app_RAND_write_file(NULL, bio_err);
|
|
ret = 0;
|
|
|
|
err:
|
|
ERR_print_errors(bio_err);
|
|
if (out)
|
|
BIO_free_all(out);
|
|
EXIT(ret);
|
|
}
|