dtn::data::Timestamp Clock::getExpireTime(const dtn::data::Bundle &b)
{
if ((b.timestamp == 0) || dtn::utils::Clock::isBad())
{
// use the AgeBlock to verify the age
try {
const dtn::data::AgeBlock &agebl = b.find<const dtn::data::AgeBlock>();
dtn::data::Number seconds_left = 0;
if (b.lifetime > agebl.getSeconds()) {
seconds_left = b.lifetime - agebl.getSeconds();
}
return getTime() + seconds_left;
} catch (const dtn::data::Bundle::NoSuchBlockFoundException&) { };
return __getExpireTime(getTime(), b.lifetime);
}
return __getExpireTime(b.timestamp, b.lifetime);
}
bool Clock::isExpired(const dtn::data::Timestamp ×tamp, const dtn::data::Number &lifetime)
{
// can not check invalid timestamp
// assume bundle has an age block and trust on later checks
if (timestamp == 0) return false;
// disable expiration if clock rating is too bad
if (getRating() == 0.0) return false;
return Clock::getTime() > __getExpireTime(timestamp, lifetime);
}
size_t Clock::getExpireTime(const dtn::data::Bundle &b)
{
if ((b._timestamp == 0) || dtn::utils::Clock::badclock)
{
// use the AgeBlock to verify the age
try {
const dtn::data::AgeBlock &agebl = b.getBlock<const dtn::data::AgeBlock>();
size_t seconds_left = b._lifetime - agebl.getSeconds();
return getTime() + seconds_left;
} catch (const dtn::data::Bundle::NoSuchBlockFoundException&) { };
}
return __getExpireTime(b._timestamp, b._lifetime);
}
dtn::data::Timestamp Clock::getExpireTime(const dtn::data::Bundle &b)
{
if (b.timestamp == 0)
{
try {
// use the AgeBlock to verify the age
const dtn::data::AgeBlock &agebl = b.find<dtn::data::AgeBlock>();
dtn::data::Number seconds_left = 0;
if (b.lifetime > agebl.getSeconds()) {
seconds_left = b.lifetime - agebl.getSeconds();
}
return getTime() + seconds_left;
} catch (const dtn::data::Bundle::NoSuchBlockFoundException&) {
// if there is no AgeBlock this bundle is not valid
return 0;
}
}
return __getExpireTime(b.timestamp, b.lifetime);
}
dtn::data::Timestamp Clock::getExpireTime(const dtn::data::Number &lifetime)
{
return __getExpireTime(getTime(), lifetime);
}
size_t Clock::getExpireTime(size_t lifetime)
{
return __getExpireTime(getTime(), lifetime);
}
size_t Clock::getExpireTime(size_t timestamp, size_t lifetime)
{
return __getExpireTime(timestamp, lifetime);
}
