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/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2019-2021 WireGuard LLC. All Rights Reserved.
*/
package conf
import (
"fmt"
"strings"
"unsafe"
"golang.zx2c4.com/go118/netip"
"golang.org/x/sys/windows"
"golang.zx2c4.com/wireguard/windows/driver"
"golang.zx2c4.com/wireguard/windows/tunnel/winipcfg"
)
func (conf *Config) ToWgQuick() string {
var output strings.Builder
output.WriteString("[Interface]\n")
output.WriteString(fmt.Sprintf("PrivateKey = %s\n", conf.Interface.PrivateKey.String()))
if conf.Interface.ListenPort > 0 {
output.WriteString(fmt.Sprintf("ListenPort = %d\n", conf.Interface.ListenPort))
}
if len(conf.Interface.Addresses) > 0 {
addrStrings := make([]string, len(conf.Interface.Addresses))
for i, address := range conf.Interface.Addresses {
addrStrings[i] = address.String()
}
output.WriteString(fmt.Sprintf("Address = %s\n", strings.Join(addrStrings[:], ", ")))
}
if len(conf.Interface.DNS)+len(conf.Interface.DNSSearch) > 0 {
addrStrings := make([]string, 0, len(conf.Interface.DNS)+len(conf.Interface.DNSSearch))
for _, address := range conf.Interface.DNS {
addrStrings = append(addrStrings, address.String())
}
addrStrings = append(addrStrings, conf.Interface.DNSSearch...)
output.WriteString(fmt.Sprintf("DNS = %s\n", strings.Join(addrStrings[:], ", ")))
}
if conf.Interface.MTU > 0 {
output.WriteString(fmt.Sprintf("MTU = %d\n", conf.Interface.MTU))
}
if len(conf.Interface.PreUp) > 0 {
output.WriteString(fmt.Sprintf("PreUp = %s\n", conf.Interface.PreUp))
}
if len(conf.Interface.PostUp) > 0 {
output.WriteString(fmt.Sprintf("PostUp = %s\n", conf.Interface.PostUp))
}
if len(conf.Interface.PreDown) > 0 {
output.WriteString(fmt.Sprintf("PreDown = %s\n", conf.Interface.PreDown))
}
if len(conf.Interface.PostDown) > 0 {
output.WriteString(fmt.Sprintf("PostDown = %s\n", conf.Interface.PostDown))
}
if conf.Interface.TableOff {
output.WriteString("Table = off\n")
}
for _, peer := range conf.Peers {
output.WriteString("\n[Peer]\n")
output.WriteString(fmt.Sprintf("PublicKey = %s\n", peer.PublicKey.String()))
if !peer.PresharedKey.IsZero() {
output.WriteString(fmt.Sprintf("PresharedKey = %s\n", peer.PresharedKey.String()))
}
if len(peer.AllowedIPs) > 0 {
addrStrings := make([]string, len(peer.AllowedIPs))
for i, address := range peer.AllowedIPs {
addrStrings[i] = address.String()
}
output.WriteString(fmt.Sprintf("AllowedIPs = %s\n", strings.Join(addrStrings[:], ", ")))
}
if !peer.Endpoint.IsEmpty() {
output.WriteString(fmt.Sprintf("Endpoint = %s\n", peer.Endpoint.String()))
}
if peer.PersistentKeepalive > 0 {
output.WriteString(fmt.Sprintf("PersistentKeepalive = %d\n", peer.PersistentKeepalive))
}
}
return output.String()
}
func (config *Config) ToDriverConfiguration() (*driver.Interface, uint32) {
preallocation := unsafe.Sizeof(driver.Interface{}) + uintptr(len(config.Peers))*unsafe.Sizeof(driver.Peer{})
for i := range config.Peers {
preallocation += uintptr(len(config.Peers[i].AllowedIPs)) * unsafe.Sizeof(driver.AllowedIP{})
}
var c driver.ConfigBuilder
c.Preallocate(uint32(preallocation))
c.AppendInterface(&driver.Interface{
Flags: driver.InterfaceHasPrivateKey | driver.InterfaceHasListenPort,
ListenPort: config.Interface.ListenPort,
PrivateKey: config.Interface.PrivateKey,
PeerCount: uint32(len(config.Peers)),
})
for i := range config.Peers {
flags := driver.PeerHasPublicKey | driver.PeerHasPersistentKeepalive
if !config.Peers[i].PresharedKey.IsZero() {
flags |= driver.PeerHasPresharedKey
}
var endpoint winipcfg.RawSockaddrInet
if !config.Peers[i].Endpoint.IsEmpty() {
addr, err := netip.ParseAddr(config.Peers[i].Endpoint.Host)
if err == nil {
flags |= driver.PeerHasEndpoint
endpoint.SetAddrPort(netip.AddrPortFrom(addr, config.Peers[i].Endpoint.Port))
}
}
c.AppendPeer(&driver.Peer{
Flags: flags,
PublicKey: config.Peers[i].PublicKey,
PresharedKey: config.Peers[i].PresharedKey,
PersistentKeepalive: config.Peers[i].PersistentKeepalive,
Endpoint: endpoint,
AllowedIPsCount: uint32(len(config.Peers[i].AllowedIPs)),
})
for j := range config.Peers[i].AllowedIPs {
a := &driver.AllowedIP{Cidr: uint8(config.Peers[i].AllowedIPs[j].Bits())}
copy(a.Address[:], config.Peers[i].AllowedIPs[j].Addr().AsSlice())
if config.Peers[i].AllowedIPs[j].Addr().Is4() {
a.AddressFamily = windows.AF_INET
} else if config.Peers[i].AllowedIPs[j].Addr().Is6() {
a.AddressFamily = windows.AF_INET6
}
c.AppendAllowedIP(a)
}
}
return c.Interface()
}
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