added necessary check and display usage in case no argument is provided

bdamele · bdamele · commit 0406f3cc970f · 2011-04-16T15:27:55.000+01:00
diff --git a/linux/shellcodeexec.c b/linux/shellcodeexec.c
@@ -39,6 +39,11 @@ int sys_bineval(char *argv);
 
 int main(int argc, char *argv[])
 {
+	if (argc < 2) {
+		printf("Run:\n\tshellcodeexec <alphanumeric-encoded shellcode>\n");
+		exit(-1);
+	}
+
 	sys_bineval(argv[1]);
 
 	exit(0);
diff --git a/windows/shellcodeexec/shellcodeexec.c b/windows/shellcodeexec/shellcodeexec.c
@@ -39,6 +39,11 @@ int sys_bineval(char *argv);
 
 int main(int argc, char *argv[])
 {
+	if (argc < 2) {
+		printf("Run:\n\tshellcodeexec <alphanumeric-encoded shellcode>\n");
+		exit(-1);
+	}
+
 	sys_bineval(argv[1]);
 
 	exit(0);
