cmd/swarm, p2p, swarm: Enable ENR in binary/execadapter (#19309)

* cmd/swarm, p2p, swarm: Enable ENR in binary/execadapter

* cmd/p2p/swarm: Remove comments + config.Enode nomarshal

* p2p/simulations: Remove superfluous error check

* p2p/simulation: Move init enode comment

* swarm/api: Check error in config test

* swarm, p2p/simulations, cmd/swarm: Use nodekey in binary record sign

* cmd/swarm: Make nodekey available for swarm api config

3 files changed, 42 insertions, 16 deletions

diff --git a/p2p/simulations/adapters/exec.go b/p2p/simulations/adapters/exec.go
index bd8bcbc85..6d1c13f3c 100644
--- a/p2p/simulations/adapters/exec.go
+++ b/p2p/simulations/adapters/exec.go
@@ -92,6 +92,10 @@ func (e *ExecAdapter) NewNode(config *NodeConfig) (Node, error) {
 		return nil, fmt.Errorf("error creating node directory: %s", err)
 	}
 
+	err := config.initDummyEnode()
+	if err != nil {
+		return nil, err
+	}
 	// generate the config
 	conf := &execNodeConfig{
 		Stack: node.DefaultConfig,
@@ -407,6 +411,14 @@ func startExecNodeStack() (*node.Node, error) {
 	if err := json.Unmarshal([]byte(confEnv), &conf); err != nil {
 		return nil, fmt.Errorf("error decoding %s: %v", envNodeConfig, err)
 	}
+	// TODO verify that ListenAddr will contain the correct tcp addr
+	// if we should start using exec adapters with other host than local
+	nodeTcpConn, err := net.ResolveTCPAddr("tcp", conf.Stack.P2P.ListenAddr)
+	if err != nil {
+		conf.Node.initDummyEnode()
+	} else {
+		conf.Node.initEnode(nodeTcpConn.IP, nodeTcpConn.Port, nodeTcpConn.Port)
+	}
 	conf.Stack.P2P.PrivateKey = conf.Node.PrivateKey
 	conf.Stack.Logger = log.New("node.id", conf.Node.ID.String())
 
diff --git a/p2p/simulations/adapters/inproc.go b/p2p/simulations/adapters/inproc.go
index 991573c2d..c1cf23a17 100644
--- a/p2p/simulations/adapters/inproc.go
+++ b/p2p/simulations/adapters/inproc.go
@@ -28,7 +28,6 @@ import (
 	"github.com/ethereum/go-ethereum/node"
 	"github.com/ethereum/go-ethereum/p2p"
 	"github.com/ethereum/go-ethereum/p2p/enode"
-	"github.com/ethereum/go-ethereum/p2p/enr"
 	"github.com/ethereum/go-ethereum/p2p/simulations/pipes"
 	"github.com/ethereum/go-ethereum/rpc"
 )
@@ -93,23 +92,10 @@ func (s *SimAdapter) NewNode(config *NodeConfig) (Node, error) {
 		}
 	}
 
-	// dialer in simulations based on ENR records
-	// doesn't work unless we explicitly set localhost record
-	ip := enr.IP(net.IPv4(127, 0, 0, 1))
-	config.Record.Set(&ip)
-	tcpPort := enr.TCP(0)
-	config.Record.Set(&tcpPort)
-
-	err := enode.SignV4(&config.Record, config.PrivateKey)
-	if err != nil {
-		return nil, fmt.Errorf("unable to generate ENR: %v", err)
-	}
-	nod, err := enode.New(enode.V4ID{}, &config.Record)
+	err := config.initDummyEnode()
 	if err != nil {
-		return nil, fmt.Errorf("unable to create enode: %v", err)
+		return nil, err
 	}
-	log.Trace("simnode new", "record", config.Record)
-	config.node = nod
 
 	n, err := node.New(&node.Config{
 		P2P: p2p.Config{
diff --git a/p2p/simulations/adapters/types.go b/p2p/simulations/adapters/types.go
index e5e4d159c..ed4013cb7 100644
--- a/p2p/simulations/adapters/types.go
+++ b/p2p/simulations/adapters/types.go
@@ -27,6 +27,7 @@ import (
 
 	"github.com/docker/docker/pkg/reexec"
 	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/node"
 	"github.com/ethereum/go-ethereum/p2p"
 	"github.com/ethereum/go-ethereum/p2p/enode"
@@ -265,3 +266,30 @@ func RegisterServices(services Services) {
 		os.Exit(0)
 	}
 }
+
+// adds the host part to the configuration's ENR, signs it
+// creates and  the corresponding enode object to the configuration
+func (n *NodeConfig) initEnode(ip net.IP, tcpport int, udpport int) error {
+	enrIp := enr.IP(ip)
+	n.Record.Set(&enrIp)
+	enrTcpPort := enr.TCP(tcpport)
+	n.Record.Set(&enrTcpPort)
+	enrUdpPort := enr.UDP(tcpport)
+	n.Record.Set(&enrUdpPort)
+
+	err := enode.SignV4(&n.Record, n.PrivateKey)
+	if err != nil {
+		return fmt.Errorf("unable to generate ENR: %v", err)
+	}
+	nod, err := enode.New(enode.V4ID{}, &n.Record)
+	if err != nil {
+		return fmt.Errorf("unable to create enode: %v", err)
+	}
+	log.Trace("simnode new", "record", n.Record)
+	n.node = nod
+	return nil
+}
+
+func (n *NodeConfig) initDummyEnode() error {
+	return n.initEnode(net.IPv4(127, 0, 0, 1), 0, 0)
+}