mask bits to be checked in ot_net

9 months ago · a3251ffac7
parent 5805fe5f86
commit a3251ffac7
1 changed files with 2 additions and 2 deletions
--- a/ot_accesslist.c
+++ b/ot_accesslist.c
@ -385,10 +385,10 @@ void accesslist_cleanup( void ) {
 #endif

 int address_in_net( const ot_ip6 address, const ot_net *net ) {
-  int bits = net->bits;
+  int bits = net->bits, checkbits = ( 0x7f00 >> ( bits & 7 ));
  int result = memcmp( address, &net->address, bits >> 3 );
  if( !result && ( bits & 7 ) )
-    result = ( ( 0x7f00 >> ( bits & 7 ) ) & address[bits>>3] ) - net->address[bits>>3];
+    result = ( checkbits & address[bits>>3] ) - ( checkbits & net->address[bits>>3]);
  return result == 0;
 }