add code to load/save configuration in eeprom

[protos/xbee-avr.git] / rc_proto.c

diff --git a/rc_proto.c b/rc_proto.c
index ee2888b..528fa84 100644 (file)
--- a/rc_proto.c
+++ b/rc_proto.c
@@ -31,8 +31,12 @@ static int set_power_level(void *frame, unsigned len, void *arg)
        struct xbee_atresp_hdr *atresp = (struct xbee_atresp_hdr *)frame;
        int level = (intptr_t)arg;
        uint8_t db;
-       db = atresp->data[0];
 
+       /* XXX check if this test is correct */
+       if (len < sizeof(struct xbee_atresp_hdr) + sizeof(uint8_t))
+               return -1;
+
+       db = atresp->data[0];
        power_levels[level].power_db = db;
        power_levels[level].ttl = 2;
        return 0;