Reject empty generation strings.
[openssl.git] / apps / rand.c
index b0c50920a5fd5d908642b38f33bc18206b37618b..e159da37be18e77a34b43b32982f1045d9c0b73e 100644 (file)
@@ -1,4 +1,57 @@
 /* apps/rand.c */
+/* ====================================================================
+ * Copyright (c) 1998-2001 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    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
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT 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.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
 
 #include "apps.h"
 
 #undef PROG
 #define PROG rand_main
 
-/* -out file         - write to file
+/*-
+ * -out file         - write to file
  * -rand file:file   - PRNG seed files
- * -egd file         - PRNG seed from EGD named socket
- * -base64           - encode output
+ * -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,*inegd=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], "-egd") == 0)
-                       {
-                       if ((argv[i+1] != NULL) && (inegd == NULL))
-                               inegd = 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, "-egd file            - seed PRNG from EGD named socket\n");
-               BIO_printf(bio_err, "-base64              - encode output\n");
-               goto err;
-               }
-
-       app_RAND_load_file(NULL, bio_err, (inrand != NULL || inegd != NULL));
-       if (inrand != NULL)
-               BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
-                       app_RAND_load_files(inrand));
-       if (inegd != NULL)
-               BIO_printf(bio_err,"%ld egd bytes loaded\n",
-                       RAND_egd(inegd));
-
-       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);
-       }
+{
+    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;
+#ifndef OPENSSL_NO_ENGINE
+    char *engine = NULL;
+#endif
+
+    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;
+        }
+#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;
+    }
+
+    if (hex && base64)
+        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");
+#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));
+    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);
+#ifdef OPENSSL_SYS_VMS
+        {
+            BIO *tmpbio = BIO_new(BIO_f_linebuffer());
+            out = BIO_push(tmpbio, out);
+        }
+#endif
+    }
+    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 > (int)sizeof(buf))
+            chunk = sizeof buf;
+        r = RAND_bytes(buf, chunk);
+        if (r <= 0)
+            goto err;
+        if (!hex)
+            BIO_write(out, buf, chunk);
+        else {
+            for (i = 0; i < chunk; i++)
+                BIO_printf(out, "%02x", buf[i]);
+        }
+        num -= chunk;
+    }
+    if (hex)
+        BIO_puts(out, "\n");
+    (void)BIO_flush(out);
+
+    app_RAND_write_file(NULL, bio_err);
+    ret = 0;
+
+ err:
+    ERR_print_errors(bio_err);
+    if (out)
+        BIO_free_all(out);
+    apps_shutdown();
+    OPENSSL_EXIT(ret);
+}