argv was set but unused

Also gives an error message when you gave it a parameter it didn't expect.
Reviewed-by: NRich Salz <rsalz@openssl.org>

MR: #2009

apps/asn1pars.c

@@ -184,7 +184,8 @@ int asn1parse_main(int argc, char **argv)
         }
     }
     argc = opt_num_rest();
-    argv = opt_rest();
+    if (argc != 0)
+        goto opthelp;
 
     if (oidfile != NULL) {
         in = bio_open_default(oidfile, 'r', FORMAT_TEXT);

apps/crl.c

@@ -227,7 +227,8 @@ int crl_main(int argc, char **argv)
         }
     }
     argc = opt_num_rest();
-    argv = opt_rest();
+    if (argc != 0)
+        goto opthelp;
 
     if (!nmflag_set)
         nmflag = XN_FLAG_ONELINE;

apps/crl2p7.c

@@ -146,7 +146,8 @@ int crl2pkcs7_main(int argc, char **argv)
         }
     }
     argc = opt_num_rest();
-    argv = opt_rest();
+    if (argc != 0)
+        goto opthelp;
 
     if (!nocrl) {
         in = bio_open_default(infile, 'r', informat);

apps/dsa.c

@@ -194,7 +194,9 @@ int dsa_main(int argc, char **argv)
         }
     }
     argc = opt_num_rest();
-    argv = opt_rest();
+    if (argc != 0)
+        goto opthelp;
+
     private = pubin || pubout ? 0 : 1;
     if (text && !pubin)
         private = 1;

apps/ec.c

@@ -205,7 +205,9 @@ int ec_main(int argc, char **argv)
         }
     }
     argc = opt_num_rest();
-    argv = opt_rest();
+    if (argc != 0)
+        goto opthelp;
+
     private = param_out || pubin || pubout ? 0 : 1;
     if (text && !pubin)
         private = 1;

apps/ecparam.c

@@ -220,7 +220,9 @@ int ecparam_main(int argc, char **argv)
         }
     }
     argc = opt_num_rest();
-    argv = opt_rest();
+    if (argc != 0)
+        goto opthelp;
+
     private = genkey ? 1 : 0;
 
     in = bio_open_default(infile, 'r', informat);

apps/genpkey.c

@@ -170,7 +170,9 @@ int genpkey_main(int argc, char **argv)
         }
     }
     argc = opt_num_rest();
-    argv = opt_rest();
+    if (argc != 0)
+        goto opthelp;
+
     private = do_param ? 0 : 1;
 
     if (ctx == NULL)

apps/nseq.c

@@ -89,6 +89,7 @@ int nseq_main(int argc, char **argv)
         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:
@@ -107,7 +108,8 @@ int nseq_main(int argc, char **argv)
         }
     }
     argc = opt_num_rest();
-    argv = opt_rest();
+    if (argc != 0)
+        goto opthelp;
 
     in = bio_open_default(infile, 'r', FORMAT_PEM);
     if (in == NULL)

apps/ocsp.c

@@ -491,7 +491,8 @@ int ocsp_main(int argc, char **argv)
         }
     }
     argc = opt_num_rest();
-    argv = opt_rest();
+    if (argc != 0)
+        goto opthelp;
 
     /* Have we anything to do? */
     if (!req && !reqin && !respin && !(port && ridx_filename))

apps/pkcs12.c

@@ -325,7 +325,9 @@ int pkcs12_main(int argc, char **argv)
         }
     }
     argc = opt_num_rest();
-    argv = opt_rest();
+    if (argc != 0)
+        goto opthelp;
+
     private = 1;
 
     if (passarg) {

apps/pkcs7.c

@@ -191,7 +191,8 @@ int pkcs7_main(int argc, char **argv)
         }
     }
     argc = opt_num_rest();
-    argv = opt_rest();
+    if (argc != 0)
+        goto opthelp;
 
     in = bio_open_default(infile, 'r', informat);
     if (in == NULL)

apps/pkcs8.c

@@ -225,7 +225,9 @@ int pkcs8_main(int argc, char **argv)
         }
     }
     argc = opt_num_rest();
-    argv = opt_rest();
+    if (argc != 0)
+        goto opthelp;
+
     private = 1;
 
     if (!app_passwd(passinarg, passoutarg, &passin, &passout)) {

apps/pkey.c

@@ -159,7 +159,9 @@ int pkey_main(int argc, char **argv)
         }
     }
     argc = opt_num_rest();
-    argv = opt_rest();
+    if (argc != 0)
+        goto opthelp;
+
     private = !noout && !pubout ? 1 : 0;
     if (text && !pubtext)
         private = 1;

apps/pkeyparam.c

@@ -92,6 +92,7 @@ int pkeyparam_main(int argc, char **argv)
         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:
@@ -116,7 +117,8 @@ int pkeyparam_main(int argc, char **argv)
         }
     }
     argc = opt_num_rest();
-    argv = opt_rest();
+    if (argc != 0)
+        goto opthelp;
 
     in = bio_open_default(infile, 'r', FORMAT_PEM);
     if (in == NULL)

apps/pkeyutl.c

@@ -225,7 +225,8 @@ int pkeyutl_main(int argc, char **argv)
         }
     }
     argc = opt_num_rest();
-    argv = opt_rest();
+    if (argc != 0)
+        goto opthelp;
 
     if (inkey == NULL ||
         (peerkey != NULL && pkey_op != EVP_PKEY_OP_DERIVE))

apps/req.c

@@ -367,7 +367,8 @@ int req_main(int argc, char **argv)
         }
     }
     argc = opt_num_rest();
-    argv = opt_rest();
+    if (argc != 0)
+        goto opthelp;
 
     if (!nmflag_set)
         nmflag = XN_FLAG_ONELINE;

apps/rsa.c

@@ -252,7 +252,9 @@ int rsa_main(int argc, char **argv)
         }
     }
     argc = opt_num_rest();
-    argv = opt_rest();
+    if (argc != 0)
+        goto opthelp;
+
     private = (text && !pubin) || (!pubout && !noout) ? 1 : 0;
 
     if (!app_passwd(passinarg, passoutarg, &passin, &passout)) {

apps/rsautl.c

@@ -205,7 +205,8 @@ int rsautl_main(int argc, char **argv)
         }
     }
     argc = opt_num_rest();
-    argv = opt_rest();
+    if (argc != 0)
+        goto opthelp;
 
     if (need_priv && (key_type != KEY_PRIVKEY)) {
         BIO_printf(bio_err, "A private key is needed for this operation\n");

apps/s_client.c

@@ -1341,7 +1341,8 @@ int s_client_main(int argc, char **argv)
         }
     }
     argc = opt_num_rest();
-    argv = opt_rest();
+    if (argc != 0)
+        goto opthelp;
 
     if (proxystr) {
         int res;

apps/s_time.c

@@ -237,7 +237,8 @@ int s_time_main(int argc, char **argv)
         }
     }
     argc = opt_num_rest();
-    argv = opt_rest();
+    if (argc != 0)
+        goto opthelp;
 
     if (cipher == NULL)
         cipher = getenv("SSL_CIPHER");

apps/sess_id.c

@@ -139,7 +139,8 @@ int sess_id_main(int argc, char **argv)
         }
     }
     argc = opt_num_rest();
-    argv = opt_rest();
+    if (argc != 0)
+        goto opthelp;
 
     x = load_sess_id(infile, informat);
     if (x == NULL) {

apps/spkac.c

@@ -112,6 +112,7 @@ int spkac_main(int argc, char **argv)
         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:
@@ -154,7 +155,8 @@ int spkac_main(int argc, char **argv)
         }
     }
     argc = opt_num_rest();
-    argv = opt_rest();
+    if (argc != 0)
+        goto opthelp;
 
     if (!app_passwd(passinarg, NULL, &passin, NULL)) {
         BIO_printf(bio_err, "Error getting password\n");

apps/ts.c

@@ -299,7 +299,6 @@ int ts_main(int argc, char **argv)
         }
     }
     argc = opt_num_rest();
-    argv = opt_rest();
     if (mode == OPT_ERR || argc != 0)
         goto opthelp;