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use crate::{Error, Result};
use std::fs::File;
use std::time::{Duration, SystemTime};
use tokio::net::{ToSocketAddrs, UdpSocket};
use tokio::time::Instant;
use rsdsl_ip_config::DsConfig;
use rsdsl_pd_config::PdConfig;
use sysinfo::{ProcessExt, Signal, System, SystemExt};
pub fn expired(lease: &PdConfig) -> bool {
let expiry = lease.timestamp + Duration::from_secs(lease.validlft.into());
SystemTime::now() >= expiry
}
pub fn needs_rebind(lease: &PdConfig) -> bool {
let expiry = lease.timestamp + Duration::from_secs(lease.t2.into());
SystemTime::now() >= expiry
}
pub fn needs_renewal(lease: &PdConfig) -> bool {
let expiry = lease.timestamp + Duration::from_secs(lease.t1.into());
SystemTime::now() >= expiry
}
pub async fn send_to_exact<A: ToSocketAddrs>(
sock: &UdpSocket,
buf: &[u8],
target: A,
) -> Result<()> {
let n = sock.send_to(buf, target).await?;
if n != buf.len() {
Err(Error::PartialSend(buf.len(), n))
} else {
Ok(())
}
}
pub fn inform() {
for netlinkd in System::new_all().processes_by_exact_name("rsdsl_netlinkd") {
netlinkd.kill_with(Signal::User1);
}
for dslite in System::new_all().processes_by_exact_name("rsdsl_dslite") {
dslite.kill_with(Signal::User1);
}
}
pub fn hexdump<A: AsRef<[u8]>>(data: A) -> String {
data.as_ref()
.iter()
.map(|byte| format!("{:02x}", byte))
.reduce(|acc, ch| acc + &ch)
.unwrap_or(String::new())
}
pub fn sys_to_instant(sys: SystemTime) -> Result<Instant> {
Ok(Instant::now() - sys.elapsed()?)
}
pub fn read_ds_config() -> Option<DsConfig> {
let mut file = File::open(rsdsl_ip_config::LOCATION).ok()?;
let ds_config = serde_json::from_reader(&mut file).ok()?;
Some(ds_config)
}
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