Allowing only control sequences in the proper range to be rebound.

This fixes Savannah bug #47025.


git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@5625 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

ChangeLog

@@ -3,6 +3,8 @@
 	continuing after a discard.  This fixes Savannah bug #47104.
 	* src/files.c (get_full_path): Plug a sneaky memory leak.  This fixes
 	Savannah bug #47003 reported and solved by Mike Frysinger.
+	* src/rcfile.c (parse_binding): Allow only control sequences in the
+	proper range to be rebound.  This fixes Savannah bug #47025.
 
 2016-02-09  Benno Schulenberg  <bensberg@justemail.net>
 	* src/files.c (stat_with_alloc, open_buffer, write_file): Check the

src/rcfile.c

@@ -452,6 +452,9 @@ void parse_binding(char *ptr, bool dobind)
     else if (keycopy[0] != '^' && keycopy[0] != 'M' && keycopy[0] != 'F') {
 	rcfile_error(N_("Key name must begin with \"^\", \"M\", or \"F\""));
 	goto free_copy;
+    } else if (keycopy[0] == '^' && (keycopy[1] < 64 || keycopy[1] > 127)) {
+	rcfile_error(N_("Key name %s is invalid"), keycopy);
+	goto free_copy;
     }
 
     if (dobind) {