Demo of use of errors in applications.

[openssl.git] / apps / rand.c

diff --git a/apps/rand.c b/apps/rand.c
index eaaa6e35a62008572fb2da51ac294506595e6868..790e79592c1ea92e91def9d89358d2b2515e826d 100644 (file)
--- a/apps/rand.c
+++ b/apps/rand.c
@@ -68,7 +68,8 @@
 
 /* -out file         - write to file
  * -rand file:file   - PRNG seed files
- * -base64           - encode output
+ * -base64           - base64 encode output
+ * -hex              - hex encode output
  * num               - write 'num' bytes
  */
 
@@ -76,15 +77,17 @@ int MAIN(int, char **);
 
 int MAIN(int argc, char **argv)
        {
-       ENGINE *e = NULL;
        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();
 
@@ -106,6 +109,7 @@ int MAIN(int argc, char **argv)
                        else
                                badopt = 1;
                        }
+#ifndef OPENSSL_NO_ENGINE
                else if (strcmp(argv[i], "-engine") == 0)
                        {
                        if ((argv[i+1] != NULL) && (engine == NULL))
@@ -113,6 +117,7 @@ int MAIN(int argc, char **argv)
                        else
                                badopt = 1;
                        }
+#endif
                else if (strcmp(argv[i], "-rand") == 0)
                        {
                        if ((argv[i+1] != NULL) && (inrand == NULL))
@@ -127,6 +132,13 @@ int MAIN(int argc, char **argv)
                        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)
@@ -142,6 +154,9 @@ int MAIN(int argc, char **argv)
                        badopt = 1;
                }
 
+       if (hex && base64)
+               badopt = 1;
+
        if (num < 0)
                badopt = 1;
        
@@ -150,13 +165,18 @@ int MAIN(int argc, char **argv)
                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               - encode output\n");
+               BIO_printf(bio_err, "-base64               - base64 encode output\n");
+               BIO_printf(bio_err, "-hex                  - hex encode output\n");
                goto err;
                }
 
-        e = setup_engine(bio_err, engine, 0);
+#ifndef OPENSSL_NO_ENGINE
+        setup_engine(bio_err, engine, 0);
+#endif
 
        app_RAND_load_file(NULL, bio_err, (inrand != NULL));
        if (inrand != NULL)
@@ -195,15 +215,23 @@ int MAIN(int argc, char **argv)
                int chunk;
 
                chunk = num;
-               if (chunk > sizeof buf)
+               if (chunk > (int)sizeof(buf))
                        chunk = sizeof buf;
                r = RAND_bytes(buf, chunk);
                if (r <= 0)
                        goto err;
-               BIO_write(out, buf, chunk);
+               if (!hex) 
+                       BIO_write(out, buf, chunk);
+               else
+                       {
+                       for (i = 0; i < chunk; i++)
+                               BIO_printf(out, "%02x", buf[i]);
+                       }
                num -= chunk;
                }
-       BIO_flush(out);
+       if (hex)
+               BIO_puts(out, "\n");
+       (void)BIO_flush(out);
 
        app_RAND_write_file(NULL, bio_err);
        ret = 0;