/
config.go
414 lines (365 loc) · 10.1 KB
/
config.go
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package config
import (
"encoding/json"
"fmt"
"net"
"os"
"path/filepath"
"sync"
"time"
"github.com/libp2p/go-libp2p/core/crypto"
"github.com/libp2p/go-libp2p/core/peer"
"github.com/mr-tron/base58/base58"
"github.com/multiformats/go-multiaddr"
"go.uber.org/zap/zapcore"
"github.com/anywherelan/awl/awlevent"
)
const (
AppConfigFilename = "config_awl.json"
AppDataDirectory = "anywherelan"
DhtPeerstoreDataDirectory = "peerstore"
AppDataDirEnvKey = "AWL_DATA_DIR"
// TODO 8989 maybe?
DefaultHTTPPort = 8639
AdminHttpServerDomainName = "admin"
AdminHttpServerIP = "127.0.0.66"
AdminHttpServerListenAddress = "127.0.0.66:80"
DefaultPeerAlias = "peer"
)
// LinuxFilesOwnerUID is used to set correct files owner uid.
// This is needed because by default all files belong to root when we run as root, but they are stored in user's directory.
var LinuxFilesOwnerUID = os.Geteuid()
type (
Config struct {
sync.RWMutex `swaggerignore:"true"`
dataDir string
emitter awlevent.Emitter
Version string `json:"version"`
LoggerLevel string `json:"loggerLevel"`
HttpListenAddress string `json:"httpListenAddress"`
HttpListenOnAdminHost bool `json:"httpListenOnAdminHost"`
P2pNode P2pNodeConfig `json:"p2pNode"`
VPNConfig VPNConfig `json:"vpn"`
KnownPeers map[string]KnownPeer `json:"knownPeers"`
BlockedPeers map[string]BlockedPeer `json:"blockedPeers"`
Update UpdateConfig `json:"update"`
}
P2pNodeConfig struct {
// Hex-encoded multihash representing a peer ID, calculated from Identity
PeerID string `json:"peerId"`
Name string `json:"name"`
Identity string `json:"identity"`
BootstrapPeers []string `json:"bootstrapPeers"`
ListenAddresses []string `json:"listenAddresses"`
ReconnectionIntervalSec time.Duration `json:"reconnectionIntervalSec" swaggertype:"primitive,integer"`
AutoAcceptAuthRequests bool `json:"autoAcceptAuthRequests"`
}
VPNConfig struct {
InterfaceName string `json:"interfaceName"`
IPNet string `json:"ipNet"`
}
KnownPeer struct {
// Hex-encoded multihash representing a peer ID
PeerID string `json:"peerId"`
// Peer provided name
Name string `json:"name"`
// User provided name
Alias string `json:"alias"`
// IPAddr used for forwarding
IPAddr string `json:"ipAddr"`
// DomainName without zone suffix (.awl)
DomainName string `json:"domainName"`
// Time of adding to config (accept/invite)
CreatedAt time.Time `json:"createdAt"`
// Time of last connection
LastSeen time.Time `json:"lastSeen"`
// Has remote peer confirmed our invitation
Confirmed bool `json:"confirmed"`
// Has remote peer declined our invitation
Declined bool `json:"declined"`
WeAllowUsingAsExitNode bool `json:"weAllowUsingAsExitNode"`
AllowedUsingAsExitNode bool `json:"allowedUsingAsExitNode"`
}
BlockedPeer struct {
// Hex-encoded multihash representing a peer ID
PeerID string `json:"peerId"`
DisplayName string `json:"displayName"`
// Time of adding to config (decline invitation/remove from KnownPeers)
CreatedAt time.Time `json:"createdAt"`
}
UpdateConfig struct {
LowestPriorityChan string `json:"lowestPriorityChan"`
UpdateServerURL string `json:"updateServerURL"`
TrayAutoCheckEnabled bool `json:"trayAutoCheckEnabled"`
TrayAutoCheckInterval string `json:"trayAutoCheckInterval"`
}
)
func (c *Config) Save() {
c.RLock()
c.save()
c.RUnlock()
}
func (c *Config) IsUniqPeerAlias(excludePeerID, alias string) bool {
c.RLock()
defer c.RUnlock()
for _, kPeer := range c.KnownPeers {
if kPeer.PeerID == excludePeerID {
continue
}
if kPeer.Alias == alias {
return false
}
}
return true
}
func (c *Config) GenUniqPeerAlias(name, alias string) string {
c.RLock()
alias = c.genUniqPeerAlias(name, alias, nil)
c.RUnlock()
return alias
}
func (c *Config) KnownPeersIds() []peer.ID {
c.RLock()
ids := make([]peer.ID, 0, len(c.KnownPeers))
for _, known := range c.KnownPeers {
ids = append(ids, known.PeerId())
}
c.RUnlock()
return ids
}
func (c *Config) GetPeer(peerID string) (KnownPeer, bool) {
c.RLock()
knownPeer, ok := c.KnownPeers[peerID]
c.RUnlock()
return knownPeer, ok
}
func (c *Config) RemovePeer(peerID string) (KnownPeer, bool) {
c.Lock()
knownPeer, exists := c.KnownPeers[peerID]
if exists {
delete(c.KnownPeers, peerID)
c.save()
}
c.Unlock()
if exists {
_ = c.emitter.Emit(awlevent.KnownPeerChanged{})
}
return knownPeer, exists
}
func (c *Config) UpsertPeer(peer KnownPeer) {
c.Lock()
c.KnownPeers[peer.PeerID] = peer
c.save()
c.Unlock()
_ = c.emitter.Emit(awlevent.KnownPeerChanged{})
}
func (c *Config) UpdatePeerLastSeen(peerID string) {
c.Lock()
knownPeer, ok := c.KnownPeers[peerID]
if ok {
knownPeer.LastSeen = time.Now()
c.KnownPeers[peerID] = knownPeer
}
c.Unlock()
}
func (c *Config) GetBlockedPeer(peerID string) (BlockedPeer, bool) {
c.RLock()
blockedPeer, ok := c.BlockedPeers[peerID]
c.RUnlock()
return blockedPeer, ok
}
func (c *Config) RemoveBlockedPeer(peerID string) {
c.Lock()
_, exists := c.BlockedPeers[peerID]
if exists {
delete(c.BlockedPeers, peerID)
c.save()
}
c.Unlock()
}
func (c *Config) UpsertBlockedPeer(peerID, displayName string) {
c.Lock()
blockedPeer, exists := c.BlockedPeers[peerID]
if !exists {
blockedPeer.CreatedAt = time.Now()
}
blockedPeer.PeerID = peerID
blockedPeer.DisplayName = displayName
c.BlockedPeers[peerID] = blockedPeer
c.save()
c.Unlock()
}
func (c *Config) SetIdentity(key crypto.PrivKey, id peer.ID) {
c.Lock()
by, _ := key.Raw()
identity := base58.Encode(by)
c.P2pNode.Identity = identity
c.P2pNode.PeerID = id.String()
c.save()
c.Unlock()
}
func (c *Config) PrivKey() []byte {
c.RLock()
defer c.RUnlock()
if c.P2pNode.Identity == "" {
return nil
}
b, err := base58.Decode(c.P2pNode.Identity)
if err != nil {
return nil
}
return b
}
func (c *Config) GetBootstrapPeers() []peer.AddrInfo {
c.RLock()
allMultiaddrs := make([]multiaddr.Multiaddr, 0, len(c.P2pNode.BootstrapPeers))
for _, val := range c.P2pNode.BootstrapPeers {
newMultiaddr, err := multiaddr.NewMultiaddr(val)
if err != nil {
logger.Warnf("invalid bootstrap multiaddr from config: %v", err)
continue
}
allMultiaddrs = append(allMultiaddrs, newMultiaddr)
}
c.RUnlock()
allMultiaddrs = append(allMultiaddrs, DefaultBootstrapPeers...)
addrInfos, err := peer.AddrInfosFromP2pAddrs(allMultiaddrs...)
if err != nil {
logger.Warnf("invalid one or more bootstrap addr info from config: %v", err)
addrInfos, err = peer.AddrInfosFromP2pAddrs(DefaultBootstrapPeers...)
if err != nil {
panic(err)
}
}
return addrInfos
}
func (c *Config) SetListenAddresses(multiaddrs []multiaddr.Multiaddr) {
c.Lock()
result := make([]string, 0, len(multiaddrs))
for _, val := range multiaddrs {
result = append(result, val.String())
}
c.P2pNode.ListenAddresses = result
c.Unlock()
}
func (c *Config) GetListenAddresses() []multiaddr.Multiaddr {
c.RLock()
result := make([]multiaddr.Multiaddr, 0, len(c.P2pNode.ListenAddresses))
for _, val := range c.P2pNode.ListenAddresses {
newMultiaddr, err := multiaddr.NewMultiaddr(val)
if err != nil {
logger.Errorf("parse listen address '%s': %v", val, err)
continue
}
result = append(result, newMultiaddr)
}
c.RUnlock()
return result
}
func (c *Config) VPNLocalIPMask() (net.IP, net.IPMask) {
localIP, ipNet, err := net.ParseCIDR(c.VPNConfig.IPNet)
if err != nil {
logger.Errorf("parse CIDR %s: %v", c.VPNConfig.IPNet, err)
return nil, nil
}
return localIP.To4(), ipNet.Mask
}
func (c *Config) DNSNamesMapping() map[string]string {
mapping := make(map[string]string)
c.RLock()
defer c.RUnlock()
for _, knownPeer := range c.KnownPeers {
mapping[knownPeer.PeerID] = knownPeer.IPAddr
if knownPeer.DomainName != "" {
mapping[knownPeer.DomainName] = knownPeer.IPAddr
}
}
return mapping
}
func (c *Config) PeerstoreDir() string {
dir := filepath.Join(c.dataDir, DhtPeerstoreDataDirectory)
return dir
}
func (c *Config) DataDir() string {
return c.dataDir
}
func (c *Config) LogLevel() zapcore.Level {
level := c.LoggerLevel
if c.LoggerLevel == "dev" {
level = "debug"
}
lvl := zapcore.InfoLevel
_ = lvl.Set(level)
return lvl
}
// DevMode
// Possible duplicate of IsDevVersion()
// Based on Config.LoggerLevel (could be used by any user)
func (c *Config) DevMode() bool {
return c.LoggerLevel == "dev"
}
func (c *Config) Export() []byte {
c.RLock()
defer c.RUnlock()
data, err := json.MarshalIndent(c, "", " ")
if err != nil {
logger.DPanicf("Marshal config: %v", err)
}
return data
}
func (c *Config) save() {
data, err := json.MarshalIndent(c, "", " ")
if err != nil {
logger.DPanicf("Marshal config: %v", err)
return
}
path := c.path()
err = os.WriteFile(path, data, filesPerm)
if err != nil {
logger.DPanicf("Save config: %v", err)
}
ChownFileIfNeeded(path)
}
func (c *Config) path() string {
path := filepath.Join(c.dataDir, AppConfigFilename)
return path
}
func (c *Config) genUniqPeerAlias(name, alias string, uniqAliases map[string]struct{}) string {
if alias == "" {
if name == "" {
alias = DefaultPeerAlias
} else {
alias = name
}
}
if uniqAliases == nil {
uniqAliases = make(map[string]struct{}, len(c.KnownPeers)+1)
for _, kPeer := range c.KnownPeers {
uniqAliases[kPeer.Alias] = struct{}{}
}
}
if _, ok := uniqAliases[alias]; ok {
newAlias := ""
for i := 0; ok; i++ {
newAlias = fmt.Sprintf("%s_%d", alias, i)
_, ok = uniqAliases[newAlias]
}
alias = newAlias
}
uniqAliases[alias] = struct{}{}
return alias
}
func (kp KnownPeer) PeerId() peer.ID {
peerID, err := peer.Decode(kp.PeerID)
if err != nil {
logger.DPanicf("Invalid hex-encoded multihash representing of a peer ID '%s': %v", kp.PeerID, err)
}
return peerID
}
func (kp KnownPeer) DisplayName() string {
name := kp.Name
if kp.Alias != "" {
name = kp.Alias
}
return name
}