0f91e1dff4
RT2630 -- segfault for int overlow RT2877 -- check return values in apps/rand Update CHANGES file for previous "windows rand" changes. Reviewed-by: Richard Levitte <levitte@openssl.org>
130 lines
3.4 KiB
C
130 lines
3.4 KiB
C
/*
|
|
* Copyright 1998-2016 The OpenSSL Project Authors. All Rights Reserved.
|
|
*
|
|
* Licensed under the OpenSSL license (the "License"). You may not use
|
|
* this file except in compliance with the License. You can obtain a copy
|
|
* in the file LICENSE in the source distribution or at
|
|
* https://www.openssl.org/source/license.html
|
|
*/
|
|
|
|
#include "apps.h"
|
|
|
|
#include <ctype.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#include <openssl/bio.h>
|
|
#include <openssl/err.h>
|
|
#include <openssl/rand.h>
|
|
|
|
typedef enum OPTION_choice {
|
|
OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
|
|
OPT_OUT, OPT_ENGINE, OPT_RAND, OPT_BASE64, OPT_HEX
|
|
} OPTION_CHOICE;
|
|
|
|
OPTIONS rand_options[] = {
|
|
{OPT_HELP_STR, 1, '-', "Usage: %s [flags] num\n"},
|
|
{OPT_HELP_STR, 1, '-', "Valid options are:\n"},
|
|
{"help", OPT_HELP, '-', "Display this summary"},
|
|
{"out", OPT_OUT, '>', "Output file"},
|
|
{"rand", OPT_RAND, 's',
|
|
"Load the file(s) into the random number generator"},
|
|
{"base64", OPT_BASE64, '-', "Base64 encode output"},
|
|
{"hex", OPT_HEX, '-', "Hex encode output"},
|
|
#ifndef OPENSSL_NO_ENGINE
|
|
{"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
|
|
#endif
|
|
{NULL}
|
|
};
|
|
|
|
int rand_main(int argc, char **argv)
|
|
{
|
|
BIO *out = NULL;
|
|
char *inrand = NULL, *outfile = NULL, *prog;
|
|
OPTION_CHOICE o;
|
|
int format = FORMAT_BINARY, i, num = -1, r, ret = 1;
|
|
|
|
prog = opt_init(argc, argv, rand_options);
|
|
while ((o = opt_next()) != OPT_EOF) {
|
|
switch (o) {
|
|
case OPT_EOF:
|
|
case OPT_ERR:
|
|
opthelp:
|
|
BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
|
|
goto end;
|
|
case OPT_HELP:
|
|
opt_help(rand_options);
|
|
ret = 0;
|
|
goto end;
|
|
case OPT_OUT:
|
|
outfile = opt_arg();
|
|
break;
|
|
case OPT_ENGINE:
|
|
(void)setup_engine(opt_arg(), 0);
|
|
break;
|
|
case OPT_RAND:
|
|
inrand = opt_arg();
|
|
break;
|
|
case OPT_BASE64:
|
|
format = FORMAT_BASE64;
|
|
break;
|
|
case OPT_HEX:
|
|
format = FORMAT_TEXT;
|
|
break;
|
|
}
|
|
}
|
|
argc = opt_num_rest();
|
|
argv = opt_rest();
|
|
|
|
if (argc != 1 || !opt_int(argv[0], &num) || num < 0)
|
|
goto opthelp;
|
|
|
|
app_RAND_load_file(NULL, (inrand != NULL));
|
|
if (inrand != NULL)
|
|
BIO_printf(bio_err, "%ld semi-random bytes loaded\n",
|
|
app_RAND_load_files(inrand));
|
|
|
|
out = bio_open_default(outfile, 'w', format);
|
|
if (out == NULL)
|
|
goto end;
|
|
|
|
if (format == FORMAT_BASE64) {
|
|
BIO *b64 = BIO_new(BIO_f_base64());
|
|
if (b64 == NULL)
|
|
goto end;
|
|
out = BIO_push(b64, out);
|
|
}
|
|
|
|
while (num > 0) {
|
|
unsigned char buf[4096];
|
|
int chunk;
|
|
|
|
chunk = num;
|
|
if (chunk > (int)sizeof(buf))
|
|
chunk = sizeof buf;
|
|
r = RAND_bytes(buf, chunk);
|
|
if (r <= 0)
|
|
goto end;
|
|
if (format != FORMAT_TEXT) {
|
|
if (BIO_write(out, buf, chunk) != chunk)
|
|
goto end;
|
|
} else {
|
|
for (i = 0; i < chunk; i++)
|
|
if (BIO_printf(out, "%02x", buf[i]) != 2)
|
|
goto end;
|
|
}
|
|
num -= chunk;
|
|
}
|
|
if (format == FORMAT_TEXT)
|
|
BIO_puts(out, "\n");
|
|
if (BIO_flush(out) <= 0 || !app_RAND_write_file(NULL))
|
|
goto end;
|
|
|
|
ret = 0;
|
|
|
|
end:
|
|
if (ret != 0)
|
|
ERR_print_errors(bio_err);
|
|
BIO_free_all(out);
|
|
return (ret);
|
|
}
|