feat(cli,run): resolve app url based on available network interfaces

cmd/cli/command/app/run.go

@@ -5,6 +5,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"io/ioutil"
+	"net"
 	"net/http"
 	"os"
 	"path/filepath"
@@ -22,7 +23,7 @@ import (
 	"forge.cadoles.com/arcad/edge/pkg/module/blob"
 	"forge.cadoles.com/arcad/edge/pkg/module/cast"
 	"forge.cadoles.com/arcad/edge/pkg/module/fetch"
-	"forge.cadoles.com/arcad/edge/pkg/module/net"
+	netModule "forge.cadoles.com/arcad/edge/pkg/module/net"
 	"forge.cadoles.com/arcad/edge/pkg/storage"
 	"forge.cadoles.com/arcad/edge/pkg/storage/sqlite"
 	"gitlab.com/wpetit/goweb/logger"
@@ -173,7 +174,7 @@ func getServerModules(bus bus.Bus, ds storage.DocumentStore, bs storage.BlobStor
 		module.ConsoleModuleFactory(),
 		cast.CastModuleFactory(),
 		module.LifecycleModuleFactory(),
-		net.ModuleFactory(bus),
+		netModule.ModuleFactory(bus),
 		module.RPCModuleFactory(bus),
 		module.StoreModuleFactory(ds),
 		blob.ModuleFactory(bus, bs),
@@ -201,11 +202,22 @@ func getServerModules(bus bus.Bus, ds storage.DocumentStore, bs storage.BlobStor
 		),
 		appModule.ModuleFactory(appModuleMemory.NewRepository(
 			func(ctx context.Context, id app.ID, from string) (string, error) {
-				if strings.HasPrefix(address, ":") {
-					address = "0.0.0.0" + address
+				addr := address
+				if strings.HasPrefix(addr, ":") {
+					addr = "0.0.0.0" + addr
 				}
 
-				return fmt.Sprintf("http://%s", address), nil
+				host, port, err := net.SplitHostPort(addr)
+				if err != nil {
+					return "", errors.WithStack(err)
+				}
+
+				addr, err = findMatchingDeviceAddress(ctx, from, host)
+				if err != nil {
+					return "", errors.WithStack(err)
+				}
+
+				return fmt.Sprintf("http://%s:%s", addr, port), nil
 			},
 			manifest,
 		)),
@@ -284,3 +296,52 @@ func loadLocalAccounts(path string) ([]authHTTP.LocalAccount, error) {
 
 	return accounts, nil
 }
+
+func findMatchingDeviceAddress(ctx context.Context, from string, defaultAddr string) (string, error) {
+	if from == "" {
+		return defaultAddr, nil
+	}
+
+	fromIP := net.ParseIP(from)
+
+	if fromIP == nil {
+		return defaultAddr, nil
+	}
+
+	ifaces, err := net.Interfaces()
+	if err != nil {
+		return "", errors.WithStack(err)
+	}
+
+	for _, ifa := range ifaces {
+		addrs, err := ifa.Addrs()
+		if err != nil {
+			logger.Error(
+				ctx, "could not retrieve iface adresses",
+				logger.E(errors.WithStack(err)), logger.F("iface", ifa.Name),
+			)
+
+			continue
+		}
+
+		for _, addr := range addrs {
+			ip, network, err := net.ParseCIDR(addr.String())
+			if err != nil {
+				logger.Error(
+					ctx, "could not parse address",
+					logger.E(errors.WithStack(err)), logger.F("address", addr.String()),
+				)
+
+				continue
+			}
+
+			if !network.Contains(fromIP) {
+				continue
+			}
+
+			return ip.String(), nil
+		}
+	}
+
+	return defaultAddr, nil
+}