[#1170] morph: Support mTLS

Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>

go.mod

@@ -127,3 +127,5 @@ require (
 	lukechampine.com/blake3 v1.2.1 // indirect
 	rsc.io/tmplfunc v0.0.3 // indirect
 )
+
+replace github.com/nspcc-dev/neo-go => git.frostfs.info/TrueCloudLab/neoneo-go v0.106.1-0.20240611123832-594f716b3d18

pkg/morph/client/constructor.go

@@ -141,7 +141,7 @@ func New(ctx context.Context, key *keys.PrivateKey, opts ...Option) (*Client, er
 	} else {
 		var endpoint Endpoint
 		for cli.endpoints.curr, endpoint = range cli.endpoints.list {
-			cli.client, act, err = cli.newCli(ctx, endpoint.Address)
+			cli.client, act, err = cli.newCli(ctx, endpoint)
 			if err != nil {
 				cli.logger.Warn(logs.FrostFSIRCouldntCreateRPCClientForEndpoint,
 					zap.Error(err), zap.String("endpoint", endpoint.Address))
@@ -162,10 +162,15 @@ func New(ctx context.Context, key *keys.PrivateKey, opts ...Option) (*Client, er
 	return cli, nil
 }
 
-func (c *Client) newCli(ctx context.Context, endpoint string) (*rpcclient.WSClient, *actor.Actor, error) {
+func (c *Client) newCli(ctx context.Context, endpoint Endpoint) (*rpcclient.WSClient, *actor.Actor, error) {
-	cli, err := rpcclient.NewWS(ctx, endpoint, rpcclient.WSOptions{
+	cfg, err := endpoint.MTLSConfig.parse()
+	if err != nil {
+		return nil, nil, fmt.Errorf("read mtls certificates: %w", err)
+	}
+	cli, err := rpcclient.NewWS(ctx, endpoint.Address, rpcclient.WSOptions{
 		Options: rpcclient.Options{
-			DialTimeout: c.cfg.dialTimeout,
+			DialTimeout:     c.cfg.dialTimeout,
+			TLSClientConfig: cfg,
 		},
 	})
 	if err != nil {

pkg/morph/client/mtls.go

@@ -0,0 +1,22 @@
+package client
+
+import (
+	"crypto/tls"
+
+	"github.com/nspcc-dev/neo-go/pkg/rpcclient"
+)
+
+// MTLSConfig represents endpoint mTLS configuration.
+type MTLSConfig struct {
+	TrustedCAList []string
+	KeyFile       string
+	CertFile      string
+}
+
+func (m *MTLSConfig) parse() (*tls.Config, error) {
+	if m == nil {
+		return nil, nil
+	}
+
+	return rpcclient.TLSClientConfig(m.TrustedCAList, m.CertFile, m.KeyFile)
+}

pkg/morph/client/multi.go

@@ -11,8 +11,9 @@ import (
 
 // Endpoint represents morph endpoint together with its priority.
 type Endpoint struct {
-	Address  string
+	Address    string
-	Priority int
+	Priority   int
+	MTLSConfig *MTLSConfig
 }
 
 type endpoints struct {
@@ -38,11 +39,11 @@ func (c *Client) SwitchRPC(ctx context.Context) bool {
 
 	// Iterate endpoints in the order of decreasing priority.
 	for c.endpoints.curr = range c.endpoints.list {
-		newEndpoint := c.endpoints.list[c.endpoints.curr].Address
+		newEndpoint := c.endpoints.list[c.endpoints.curr]
 		cli, act, err := c.newCli(ctx, newEndpoint)
 		if err != nil {
 			c.logger.Warn(logs.ClientCouldNotEstablishConnectionToTheSwitchedRPCNode,
-				zap.String("endpoint", newEndpoint),
+				zap.String("endpoint", newEndpoint.Address),
 				zap.Error(err),
 			)
 
@@ -52,7 +53,7 @@ func (c *Client) SwitchRPC(ctx context.Context) bool {
 		c.cache.invalidate()
 
 		c.logger.Info(logs.ClientConnectionToTheNewRPCNodeHasBeenEstablished,
-			zap.String("endpoint", newEndpoint))
+			zap.String("endpoint", newEndpoint.Address))
 
 		c.client = cli
 		c.setActor(act)
@@ -119,7 +120,7 @@ mainLoop:
 
 				tryE := e.Address
 
-				cli, act, err := c.newCli(ctx, tryE)
+				cli, act, err := c.newCli(ctx, e)
 				if err != nil {
 					c.logger.Warn(logs.ClientCouldNotCreateClientToTheHigherPriorityNode,
 						zap.String("endpoint", tryE),