From 42774ee8510fa4d71e6b0db30fdf8a51b88a26b9 Mon Sep 17 00:00:00 2001 From: Miroslav Lichvar Date: Tue, 7 Apr 2015 15:02:32 +0200 Subject: [PATCH] refclock: check offset sanity --- refclock.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/refclock.c b/refclock.c index 59e9297..81a3e99 100644 --- a/refclock.c +++ b/refclock.c @@ -367,7 +367,9 @@ RCL_AddSample(RCL_Instance instance, struct timeval *sample_time, double offset, UTI_AddDoubleToTimeval(sample_time, correction, &cooked_time); dispersion += instance->precision; - if (!valid_sample_time(instance, sample_time)) + /* Make sure the timestamp and offset provided by the driver are sane */ + if (!UTI_IsTimeOffsetSane(sample_time, offset) || + !valid_sample_time(instance, sample_time)) return 0; filter_add_sample(&instance->filter, &cooked_time, offset - correction + instance->offset, dispersion); @@ -407,7 +409,8 @@ RCL_AddPulse(RCL_Instance instance, struct timeval *pulse_time, double second) UTI_AddDoubleToTimeval(pulse_time, correction, &cooked_time); dispersion += instance->precision; - if (!valid_sample_time(instance, pulse_time)) + if (!UTI_IsTimeOffsetSane(pulse_time, 0.0) || + !valid_sample_time(instance, pulse_time)) return 0; rate = instance->pps_rate;