-/* apps/rand.c */
/* ====================================================================
* Copyright (c) 1998-2001 The OpenSSL Project. All rights reserved.
*
#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 - base64 encode output
- * -hex - hex 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;
- int hex = 0;
- BIO *out = NULL;
- int num = -1;
+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
- char *engine = NULL;
+ {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
#endif
+ {NULL}
+};
- 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);
-
- if (!load_config(bio_err, NULL))
- goto err;
-
- 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;
- }
-#ifndef OPENSSL_NO_ENGINE
- else if (strcmp(argv[i], "-engine") == 0) {
- if ((argv[i + 1] != NULL) && (engine == NULL))
- engine = argv[++i];
- else
- badopt = 1;
+int rand_main(int argc, char **argv)
+{
+ BIO *out = NULL;
+ char *inrand = NULL, *outfile = NULL, *prog;
+ OPTION_CHOICE o;
+ int base64 = 0, hex = 0, 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:
+ base64 = 1;
+ break;
+ case OPT_HEX:
+ hex = 1;
+ break;
}
-#endif
- 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 (strcmp(argv[i], "-hex") == 0) {
- if (!hex)
- hex = 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;
}
+ argc = opt_num_rest();
+ argv = opt_rest();
- if (hex && base64)
- badopt = 1;
+ if (argc != 1 || (hex && base64))
+ goto opthelp;
+ if (sscanf(argv[0], "%d", &num) != 1 || num < 0)
+ goto opthelp;
- if (num < 0)
- badopt = 1;
+ if (!app_load_modules(NULL))
+ goto end;
- 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");
-#ifndef OPENSSL_NO_ENGINE
- BIO_printf(bio_err,
- "-engine e - use engine e, possibly a hardware device.\n");
-#endif
- BIO_printf(bio_err, "-rand file%cfile%c... - seed PRNG from files\n",
- LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
- BIO_printf(bio_err, "-base64 - base64 encode output\n");
- BIO_printf(bio_err, "-hex - hex encode output\n");
- goto err;
- }
-#ifndef OPENSSL_NO_ENGINE
- setup_engine(bio_err, engine, 0);
-#endif
-
- app_RAND_load_file(NULL, bio_err, (inrand != NULL));
+ 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_new(BIO_s_file());
+ out = bio_open_default(outfile, "w");
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);
-#ifdef OPENSSL_SYS_VMS
- {
- BIO *tmpbio = BIO_new(BIO_f_linebuffer());
- out = BIO_push(tmpbio, out);
- }
-#endif
- }
- if (r <= 0)
- goto err;
+ goto end;
if (base64) {
BIO *b64 = BIO_new(BIO_f_base64());
if (b64 == NULL)
- goto err;
+ goto end;
out = BIO_push(b64, out);
}
chunk = sizeof buf;
r = RAND_bytes(buf, chunk);
if (r <= 0)
- goto err;
+ goto end;
if (!hex)
BIO_write(out, buf, chunk);
else {
BIO_puts(out, "\n");
(void)BIO_flush(out);
- app_RAND_write_file(NULL, bio_err);
+ app_RAND_write_file(NULL);
ret = 0;
- err:
- ERR_print_errors(bio_err);
+ end:
BIO_free_all(out);
- apps_shutdown();
- OPENSSL_EXIT(ret);
+ return (ret);
}
projects / openssl.git / blobdiff