mirror of
https://github.com/netbirdio/netbird.git
synced 2024-11-07 08:44:07 +01:00
Routemgr error handling (#1073)
In case the route management feature is not supported then do not create unnecessary firewall and manager instances. This can happen if the nftables nor iptables is not available on the host OS. - Move the error handling to upper layer - Remove fake, useless implementations of interfaces - Update go-iptables because In Docker the old version can not determine well the path of executable file - update lib to 0.70
This commit is contained in:
parent
2dec016201
commit
0f0c7ec2ed
@ -27,14 +27,19 @@ func genKey(format string, input string) string {
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}
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}
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// NewFirewall if supported, returns an iptables manager, otherwise returns a nftables manager
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// NewFirewall if supported, returns an iptables manager, otherwise returns a nftables manager
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func NewFirewall(parentCTX context.Context) firewallManager {
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func NewFirewall(parentCTX context.Context) (firewallManager, error) {
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manager, err := newNFTablesManager(parentCTX)
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manager, err := newNFTablesManager(parentCTX)
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if err == nil {
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if err == nil {
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log.Debugf("nftables firewall manager will be used")
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log.Debugf("nftables firewall manager will be used")
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return manager
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return manager, nil
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}
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}
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log.Debugf("fallback to iptables firewall manager: %s", err)
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fMgr, err := newIptablesManager(parentCTX)
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return newIptablesManager(parentCTX)
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if err != nil {
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log.Debugf("failed to initialize iptables for root mgr: %s", err)
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return nil, err
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}
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log.Debugf("iptables firewall manager will be used")
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return fMgr, nil
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}
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}
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func getInPair(pair routerPair) routerPair {
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func getInPair(pair routerPair) routerPair {
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@ -3,24 +3,12 @@
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package routemanager
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package routemanager
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import "context"
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import (
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"context"
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"fmt"
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)
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type unimplementedFirewall struct{}
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// NewFirewall returns a nil manager
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func NewFirewall(context.Context) (firewallManager, error) {
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func (unimplementedFirewall) RestoreOrCreateContainers() error {
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return nil, fmt.Errorf("firewall not supported on this OS")
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return nil
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}
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func (unimplementedFirewall) InsertRoutingRules(pair routerPair) error {
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return nil
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}
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func (unimplementedFirewall) RemoveRoutingRules(pair routerPair) error {
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return nil
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}
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func (unimplementedFirewall) CleanRoutingRules() {
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}
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// NewFirewall returns an unimplemented Firewall manager
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func NewFirewall(parentCtx context.Context) firewallManager {
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return unimplementedFirewall{}
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}
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}
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@ -49,14 +49,12 @@ type iptablesManager struct {
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mux sync.Mutex
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mux sync.Mutex
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}
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}
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func newIptablesManager(parentCtx context.Context) *iptablesManager {
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func newIptablesManager(parentCtx context.Context) (*iptablesManager, error) {
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ctx, cancel := context.WithCancel(parentCtx)
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ipv4Client, err := iptables.NewWithProtocol(iptables.ProtocolIPv4)
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ipv4Client, err := iptables.NewWithProtocol(iptables.ProtocolIPv4)
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if err != nil {
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if err != nil {
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log.Debugf("failed to initialize iptables for ipv4: %s", err)
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return nil, err
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} else if !isIptablesClientAvailable(ipv4Client) {
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} else if !isIptablesClientAvailable(ipv4Client) {
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log.Infof("iptables is missing for ipv4")
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return nil, fmt.Errorf("iptables is missing for ipv4")
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ipv4Client = nil
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}
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}
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ipv6Client, err := iptables.NewWithProtocol(iptables.ProtocolIPv6)
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ipv6Client, err := iptables.NewWithProtocol(iptables.ProtocolIPv6)
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if err != nil {
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if err != nil {
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@ -66,13 +64,14 @@ func newIptablesManager(parentCtx context.Context) *iptablesManager {
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ipv6Client = nil
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ipv6Client = nil
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}
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}
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ctx, cancel := context.WithCancel(parentCtx)
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return &iptablesManager{
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return &iptablesManager{
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ctx: ctx,
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ctx: ctx,
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stop: cancel,
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stop: cancel,
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ipv4Client: ipv4Client,
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ipv4Client: ipv4Client,
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ipv6Client: ipv6Client,
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ipv6Client: ipv6Client,
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rules: make(map[string]map[string][]string),
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rules: make(map[string]map[string][]string),
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}
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}, nil
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}
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}
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// CleanRoutingRules cleans existing iptables resources that we created by the agent
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// CleanRoutingRules cleans existing iptables resources that we created by the agent
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@ -395,6 +394,10 @@ func (i *iptablesManager) insertRoutingRule(keyFormat, table, chain, jump string
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ipVersion = ipv6
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ipVersion = ipv6
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}
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}
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if iptablesClient == nil {
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return fmt.Errorf("unable to insert iptables routing rules. Iptables client is not initialized")
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}
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ruleKey := genKey(keyFormat, pair.ID)
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ruleKey := genKey(keyFormat, pair.ID)
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rule := genRuleSpec(jump, ruleKey, pair.source, pair.destination)
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rule := genRuleSpec(jump, ruleKey, pair.source, pair.destination)
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existingRule, found := i.rules[ipVersion][ruleKey]
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existingRule, found := i.rules[ipVersion][ruleKey]
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@ -459,6 +462,10 @@ func (i *iptablesManager) removeRoutingRule(keyFormat, table, chain string, pair
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ipVersion = ipv6
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ipVersion = ipv6
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}
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}
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if iptablesClient == nil {
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return fmt.Errorf("unable to remove iptables routing rules. Iptables client is not initialized")
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}
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ruleKey := genKey(keyFormat, pair.ID)
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ruleKey := genKey(keyFormat, pair.ID)
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existingRule, found := i.rules[ipVersion][ruleKey]
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existingRule, found := i.rules[ipVersion][ruleKey]
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if found {
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if found {
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@ -16,7 +16,7 @@ func TestIptablesManager_RestoreOrCreateContainers(t *testing.T) {
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t.SkipNow()
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t.SkipNow()
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}
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}
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manager := newIptablesManager(context.TODO())
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manager, _ := newIptablesManager(context.TODO())
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defer manager.CleanRoutingRules()
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defer manager.CleanRoutingRules()
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@ -27,7 +27,7 @@ type DefaultManager struct {
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stop context.CancelFunc
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stop context.CancelFunc
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mux sync.Mutex
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mux sync.Mutex
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clientNetworks map[string]*clientNetwork
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clientNetworks map[string]*clientNetwork
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serverRouter *serverRouter
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serverRouter serverRouter
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statusRecorder *peer.Status
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statusRecorder *peer.Status
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wgInterface *iface.WGIface
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wgInterface *iface.WGIface
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pubKey string
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pubKey string
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@ -36,13 +36,17 @@ type DefaultManager struct {
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// NewManager returns a new route manager
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// NewManager returns a new route manager
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func NewManager(ctx context.Context, pubKey string, wgInterface *iface.WGIface, statusRecorder *peer.Status, initialRoutes []*route.Route) *DefaultManager {
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func NewManager(ctx context.Context, pubKey string, wgInterface *iface.WGIface, statusRecorder *peer.Status, initialRoutes []*route.Route) *DefaultManager {
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mCTX, cancel := context.WithCancel(ctx)
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serverRouter, err := newServerRouter(ctx, wgInterface)
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if err != nil {
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log.Errorf("server router is not supported: %s", err)
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}
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mCTX, cancel := context.WithCancel(ctx)
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dm := &DefaultManager{
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dm := &DefaultManager{
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ctx: mCTX,
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ctx: mCTX,
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stop: cancel,
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stop: cancel,
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clientNetworks: make(map[string]*clientNetwork),
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clientNetworks: make(map[string]*clientNetwork),
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serverRouter: newServerRouter(ctx, wgInterface),
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serverRouter: serverRouter,
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statusRecorder: statusRecorder,
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statusRecorder: statusRecorder,
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wgInterface: wgInterface,
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wgInterface: wgInterface,
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pubKey: pubKey,
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pubKey: pubKey,
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@ -59,7 +63,9 @@ func NewManager(ctx context.Context, pubKey string, wgInterface *iface.WGIface,
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// Stop stops the manager watchers and clean firewall rules
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// Stop stops the manager watchers and clean firewall rules
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func (m *DefaultManager) Stop() {
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func (m *DefaultManager) Stop() {
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m.stop()
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m.stop()
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if m.serverRouter != nil {
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m.serverRouter.cleanUp()
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m.serverRouter.cleanUp()
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}
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m.ctx = nil
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m.ctx = nil
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}
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}
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@ -77,10 +83,13 @@ func (m *DefaultManager) UpdateRoutes(updateSerial uint64, newRoutes []*route.Ro
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m.updateClientNetworks(updateSerial, newClientRoutesIDMap)
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m.updateClientNetworks(updateSerial, newClientRoutesIDMap)
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m.notifier.onNewRoutes(newClientRoutesIDMap)
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m.notifier.onNewRoutes(newClientRoutesIDMap)
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if m.serverRouter != nil {
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err := m.serverRouter.updateRoutes(newServerRoutesMap)
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err := m.serverRouter.updateRoutes(newServerRoutesMap)
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if err != nil {
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if err != nil {
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return err
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return err
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}
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}
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}
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return nil
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return nil
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}
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}
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@ -30,7 +30,6 @@ func TestManagerUpdateRoutes(t *testing.T) {
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inputInitRoutes []*route.Route
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inputInitRoutes []*route.Route
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inputRoutes []*route.Route
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inputRoutes []*route.Route
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inputSerial uint64
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inputSerial uint64
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shouldCheckServerRoutes bool
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serverRoutesExpected int
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serverRoutesExpected int
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clientNetworkWatchersExpected int
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clientNetworkWatchersExpected int
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}{
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}{
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@ -87,7 +86,6 @@ func TestManagerUpdateRoutes(t *testing.T) {
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},
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},
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},
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},
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inputSerial: 1,
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inputSerial: 1,
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shouldCheckServerRoutes: runtime.GOOS == "linux",
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serverRoutesExpected: 2,
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serverRoutesExpected: 2,
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clientNetworkWatchersExpected: 0,
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clientNetworkWatchersExpected: 0,
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},
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},
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@ -116,7 +114,6 @@ func TestManagerUpdateRoutes(t *testing.T) {
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},
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},
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},
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},
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inputSerial: 1,
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inputSerial: 1,
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shouldCheckServerRoutes: runtime.GOOS == "linux",
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serverRoutesExpected: 1,
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serverRoutesExpected: 1,
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clientNetworkWatchersExpected: 1,
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clientNetworkWatchersExpected: 1,
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},
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},
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@ -174,25 +171,6 @@ func TestManagerUpdateRoutes(t *testing.T) {
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inputSerial: 1,
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inputSerial: 1,
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clientNetworkWatchersExpected: 0,
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clientNetworkWatchersExpected: 0,
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},
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},
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{
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name: "No Server Routes Should Be Added To Non Linux",
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inputRoutes: []*route.Route{
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{
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ID: "a",
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NetID: "routeA",
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Peer: localPeerKey,
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Network: netip.MustParsePrefix("1.2.3.4/32"),
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NetworkType: route.IPv4Network,
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Metric: 9999,
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Masquerade: false,
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Enabled: true,
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},
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},
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inputSerial: 1,
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shouldCheckServerRoutes: runtime.GOOS != "linux",
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serverRoutesExpected: 0,
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clientNetworkWatchersExpected: 0,
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},
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{
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{
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name: "Remove 1 Client Route",
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name: "Remove 1 Client Route",
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inputInitRoutes: []*route.Route{
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inputInitRoutes: []*route.Route{
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@ -335,7 +313,6 @@ func TestManagerUpdateRoutes(t *testing.T) {
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},
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},
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inputRoutes: []*route.Route{},
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inputRoutes: []*route.Route{},
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inputSerial: 1,
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inputSerial: 1,
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shouldCheckServerRoutes: true,
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serverRoutesExpected: 0,
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serverRoutesExpected: 0,
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clientNetworkWatchersExpected: 0,
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clientNetworkWatchersExpected: 0,
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},
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},
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@ -384,7 +361,6 @@ func TestManagerUpdateRoutes(t *testing.T) {
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},
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},
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},
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},
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inputSerial: 1,
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inputSerial: 1,
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shouldCheckServerRoutes: runtime.GOOS == "linux",
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serverRoutesExpected: 2,
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serverRoutesExpected: 2,
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clientNetworkWatchersExpected: 1,
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clientNetworkWatchersExpected: 1,
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},
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},
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@ -419,8 +395,9 @@ func TestManagerUpdateRoutes(t *testing.T) {
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require.Len(t, routeManager.clientNetworks, testCase.clientNetworkWatchersExpected, "client networks size should match")
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require.Len(t, routeManager.clientNetworks, testCase.clientNetworkWatchersExpected, "client networks size should match")
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if testCase.shouldCheckServerRoutes {
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if runtime.GOOS == "linux" {
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require.Len(t, routeManager.serverRouter.routes, testCase.serverRoutesExpected, "server networks size should match")
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sr := routeManager.serverRouter.(*defaultServerRouter)
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require.Len(t, sr.routes, testCase.serverRoutesExpected, "server networks size should match")
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}
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}
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})
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})
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}
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}
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9
client/internal/routemanager/server.go
Normal file
9
client/internal/routemanager/server.go
Normal file
@ -0,0 +1,9 @@
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package routemanager
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import "github.com/netbirdio/netbird/route"
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type serverRouter interface {
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updateRoutes(map[string]*route.Route) error
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removeFromServerNetwork(*route.Route) error
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cleanUp()
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}
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@ -2,20 +2,11 @@ package routemanager
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import (
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import (
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"context"
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"context"
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"fmt"
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"github.com/netbirdio/netbird/iface"
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"github.com/netbirdio/netbird/iface"
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"github.com/netbirdio/netbird/route"
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)
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)
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type serverRouter struct {
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func newServerRouter(context.Context, *iface.WGIface) (serverRouter, error) {
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return nil, fmt.Errorf("server route not supported on this os")
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}
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}
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func newServerRouter(ctx context.Context, wgInterface *iface.WGIface) *serverRouter {
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return &serverRouter{}
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}
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func (r *serverRouter) updateRoutes(routesMap map[string]*route.Route) error {
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return nil
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}
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func (r *serverRouter) cleanUp() {}
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@ -13,7 +13,7 @@ import (
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"github.com/netbirdio/netbird/route"
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"github.com/netbirdio/netbird/route"
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)
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)
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type serverRouter struct {
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type defaultServerRouter struct {
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mux sync.Mutex
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mux sync.Mutex
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ctx context.Context
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ctx context.Context
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routes map[string]*route.Route
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routes map[string]*route.Route
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@ -21,16 +21,21 @@ type serverRouter struct {
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wgInterface *iface.WGIface
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wgInterface *iface.WGIface
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}
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}
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func newServerRouter(ctx context.Context, wgInterface *iface.WGIface) *serverRouter {
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func newServerRouter(ctx context.Context, wgInterface *iface.WGIface) (serverRouter, error) {
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return &serverRouter{
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firewall, err := NewFirewall(ctx)
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ctx: ctx,
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if err != nil {
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routes: make(map[string]*route.Route),
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return nil, err
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firewall: NewFirewall(ctx),
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wgInterface: wgInterface,
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}
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}
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}
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func (m *serverRouter) updateRoutes(routesMap map[string]*route.Route) error {
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return &defaultServerRouter{
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ctx: ctx,
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routes: make(map[string]*route.Route),
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firewall: firewall,
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wgInterface: wgInterface,
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}, nil
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}
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func (m *defaultServerRouter) updateRoutes(routesMap map[string]*route.Route) error {
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serverRoutesToRemove := make([]string, 0)
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serverRoutesToRemove := make([]string, 0)
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|
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if len(routesMap) > 0 {
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if len(routesMap) > 0 {
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@ -81,7 +86,7 @@ func (m *serverRouter) updateRoutes(routesMap map[string]*route.Route) error {
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return nil
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return nil
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}
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}
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func (m *serverRouter) removeFromServerNetwork(route *route.Route) error {
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func (m *defaultServerRouter) removeFromServerNetwork(route *route.Route) error {
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select {
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select {
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case <-m.ctx.Done():
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case <-m.ctx.Done():
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log.Infof("not removing from server network because context is done")
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log.Infof("not removing from server network because context is done")
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@ -98,7 +103,7 @@ func (m *serverRouter) removeFromServerNetwork(route *route.Route) error {
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}
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}
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}
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}
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func (m *serverRouter) addToServerNetwork(route *route.Route) error {
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func (m *defaultServerRouter) addToServerNetwork(route *route.Route) error {
|
||||||
select {
|
select {
|
||||||
case <-m.ctx.Done():
|
case <-m.ctx.Done():
|
||||||
log.Infof("not adding to server network because context is done")
|
log.Infof("not adding to server network because context is done")
|
||||||
@ -115,6 +120,6 @@ func (m *serverRouter) addToServerNetwork(route *route.Route) error {
|
|||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
func (m *serverRouter) cleanUp() {
|
func (m *defaultServerRouter) cleanUp() {
|
||||||
m.firewall.CleanRoutingRules()
|
m.firewall.CleanRoutingRules()
|
||||||
}
|
}
|
||||||
|
@ -20,7 +20,7 @@ func InterfaceFilter(disallowList []string) func(string) bool {
|
|||||||
|
|
||||||
for _, s := range disallowList {
|
for _, s := range disallowList {
|
||||||
if strings.HasPrefix(iFace, s) {
|
if strings.HasPrefix(iFace, s) {
|
||||||
log.Debugf("ignoring interface %s - it is not allowed", iFace)
|
log.Tracef("ignoring interface %s - it is not allowed", iFace)
|
||||||
return false
|
return false
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
2
go.mod
2
go.mod
@ -31,7 +31,7 @@ require (
|
|||||||
fyne.io/fyne/v2 v2.1.4
|
fyne.io/fyne/v2 v2.1.4
|
||||||
github.com/c-robinson/iplib v1.0.3
|
github.com/c-robinson/iplib v1.0.3
|
||||||
github.com/cilium/ebpf v0.10.0
|
github.com/cilium/ebpf v0.10.0
|
||||||
github.com/coreos/go-iptables v0.6.0
|
github.com/coreos/go-iptables v0.7.0
|
||||||
github.com/creack/pty v1.1.18
|
github.com/creack/pty v1.1.18
|
||||||
github.com/eko/gocache/v3 v3.1.1
|
github.com/eko/gocache/v3 v3.1.1
|
||||||
github.com/getlantern/systray v1.2.1
|
github.com/getlantern/systray v1.2.1
|
||||||
|
4
go.sum
4
go.sum
@ -131,8 +131,8 @@ github.com/containerd/typeurl v1.0.2/go.mod h1:9trJWW2sRlGub4wZJRTW83VtbOLS6hwcD
|
|||||||
github.com/coocood/freecache v1.2.1 h1:/v1CqMq45NFH9mp/Pt142reundeBM0dVUD3osQBeu/U=
|
github.com/coocood/freecache v1.2.1 h1:/v1CqMq45NFH9mp/Pt142reundeBM0dVUD3osQBeu/U=
|
||||||
github.com/coreos/bbolt v1.3.2/go.mod h1:iRUV2dpdMOn7Bo10OQBFzIJO9kkE559Wcmn+qkEiiKk=
|
github.com/coreos/bbolt v1.3.2/go.mod h1:iRUV2dpdMOn7Bo10OQBFzIJO9kkE559Wcmn+qkEiiKk=
|
||||||
github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
|
github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
|
||||||
github.com/coreos/go-iptables v0.6.0 h1:is9qnZMPYjLd8LYqmm/qlE+wwEgJIkTYdhV3rfZo4jk=
|
github.com/coreos/go-iptables v0.7.0 h1:XWM3V+MPRr5/q51NuWSgU0fqMad64Zyxs8ZUoMsamr8=
|
||||||
github.com/coreos/go-iptables v0.6.0/go.mod h1:Qe8Bv2Xik5FyTXwgIbLAnv2sWSBmvWdFETJConOQ//Q=
|
github.com/coreos/go-iptables v0.7.0/go.mod h1:Qe8Bv2Xik5FyTXwgIbLAnv2sWSBmvWdFETJConOQ//Q=
|
||||||
github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
|
github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
|
||||||
github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
|
github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
|
||||||
github.com/coreos/go-systemd/v22 v22.0.0/go.mod h1:xO0FLkIi5MaZafQlIrOotqXZ90ih+1atmu1JpKERPPk=
|
github.com/coreos/go-systemd/v22 v22.0.0/go.mod h1:xO0FLkIi5MaZafQlIrOotqXZ90ih+1atmu1JpKERPPk=
|
||||||
|
Loading…
Reference in New Issue
Block a user