AdGuardHome/internal/dhcpd/server.go

101 lines
3.1 KiB
Go
Raw Normal View History

package dhcpd
import (
"net"
"time"
)
// DHCPServer - DHCP server interface
type DHCPServer interface {
// ResetLeases - reset leases
ResetLeases(leases []*Lease)
// GetLeases - get leases
GetLeases(flags int) []Lease
// GetLeasesRef - get reference to leases array
GetLeasesRef() []*Lease
// AddStaticLease - add a static lease
AddStaticLease(lease Lease) error
// RemoveStaticLease - remove a static lease
RemoveStaticLease(l Lease) error
// FindMACbyIP - find a MAC address by IP address in the currently active DHCP leases
FindMACbyIP(ip net.IP) net.HardwareAddr
// WriteDiskConfig4 - copy disk configuration
WriteDiskConfig4(c *V4ServerConf)
// WriteDiskConfig6 - copy disk configuration
WriteDiskConfig6(c *V6ServerConf)
// Start - start server
Start() error
// Stop - stop server
Stop()
}
// V4ServerConf - server configuration
type V4ServerConf struct {
Enabled bool `yaml:"-"`
InterfaceName string `yaml:"-"`
GatewayIP string `yaml:"gateway_ip"`
SubnetMask string `yaml:"subnet_mask"`
// The first & the last IP address for dynamic leases
// Bytes [0..2] of the last allowed IP address must match the first IP
RangeStart string `yaml:"range_start"`
RangeEnd string `yaml:"range_end"`
LeaseDuration uint32 `yaml:"lease_duration"` // in seconds
// IP conflict detector: time (ms) to wait for ICMP reply
// 0: disable
ICMPTimeout uint32 `yaml:"icmp_timeout_msec"`
// Custom Options.
//
// Option with arbitrary hexadecimal data:
// DEC_CODE hex HEX_DATA
// where DEC_CODE is a decimal DHCPv4 option code in range [1..255]
//
// Option with IP data (only 1 IP is supported):
// DEC_CODE ip IP_ADDR
Options []string `yaml:"options"`
ipStart net.IP // starting IP address for dynamic leases
ipEnd net.IP // ending IP address for dynamic leases
leaseTime time.Duration // the time during which a dynamic lease is considered valid
dnsIPAddrs []net.IP // IPv4 addresses to return to DHCP clients as DNS server addresses
routerIP net.IP // value for Option Router
subnetMask net.IPMask // value for Option SubnetMask
options []dhcpOption
// Server calls this function when leases data changes
notify func(uint32)
}
// V6ServerConf - server configuration
type V6ServerConf struct {
Enabled bool `yaml:"-"`
InterfaceName string `yaml:"-"`
// The first IP address for dynamic leases
// The last allowed IP address ends with 0xff byte
RangeStart string `yaml:"range_start"`
LeaseDuration uint32 `yaml:"lease_duration"` // in seconds
RaSlaacOnly bool `yaml:"ra_slaac_only"` // send ICMPv6.RA packets without MO flags
RaAllowSlaac bool `yaml:"ra_allow_slaac"` // send ICMPv6.RA packets with MO flags
ipStart net.IP // starting IP address for dynamic leases
leaseTime time.Duration // the time during which a dynamic lease is considered valid
dnsIPAddrs []net.IP // IPv6 addresses to return to DHCP clients as DNS server addresses
// Server calls this function when leases data changes
notify func(uint32)
}
type dhcpOption struct {
code uint8
val []byte
}