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use crate::{Error, Result};
use std::fs::File;
use std::net::Ipv6Addr;
use std::time::{Duration, SystemTime};
use tokio::net::{ToSocketAddrs, UdpSocket};
use dhcproto::v6::IAPrefix;
use rsdsl_pd_config::PdConfig;
pub fn expired(lease: &PdConfig) -> bool {
let expiry = lease.timestamp + Duration::from_secs(lease.preflft.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)
} else {
Ok(())
}
}
pub fn write_pdconfig(
ia_prefix: &IAPrefix,
dnss: &[Ipv6Addr],
aftr: &Option<String>,
) -> Result<()> {
let pdconfig = PdConfig {
timestamp: SystemTime::now(),
prefix: ia_prefix.prefix_ip,
len: ia_prefix.prefix_len,
validlft: ia_prefix.valid_lifetime,
preflft: ia_prefix.preferred_lifetime,
dns1: dnss[0], // Bounds checked by packet handler.
dns2: dnss[1], // Bounds checked by packet handler.
aftr: aftr.clone(),
};
let mut file = File::create(rsdsl_pd_config::LOCATION)?;
serde_json::to_writer_pretty(&mut file, &pdconfig)?;
Ok(())
}
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