59 lines
1.2 KiB
Go
59 lines
1.2 KiB
Go
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package server
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import (
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"net"
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log "git.wntrmute.dev/kyle/goutils/log"
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"git.wntrmute.dev/kyle/kdhcp/dhcp"
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)
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func (srv *Server) WriteDHCPResponse(req *dhcp.Packet, ip net.Addr) error {
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lease := srv.SelectLease(req, srv.clock.Now())
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if lease == nil {
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log.Errln("server: couldn't find available lease")
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return nil
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}
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log.Debugf("available lease: %s", lease)
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response, err := dhcp.NewOffer(req, srv.Config.Network.NetworkInfo(), lease)
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if err != nil {
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log.Errln(err.Error())
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return err
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}
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log.Debugf("building offer for address %s", lease.Addr)
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pkt, err := dhcp.WritePacket(response)
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if err != nil {
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log.Errln(err.Error())
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return err
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}
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ip, err = addrReply(ip)
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if err != nil {
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log.Errln(err.Error())
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return err
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}
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log.Debugf("writing offer to %s", ip)
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_, err = srv.Conn.WriteTo(pkt, ip)
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if err != nil {
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log.Errf("failed to write packet: %s", err)
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return err
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}
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log.Infof("sending offer for address %s to %s", lease.Addr, req.HardwareAddress)
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go func() {
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if err := srv.SaveLeases(); err != nil {
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log.Warningf("server: while saving leases: %s", err)
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}
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}()
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err = srv.AcceptLease(req, lease, srv.clock.Now())
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if err != nil {
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log.Errln(err.Error())
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return err
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}
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return nil
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}
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