APIv2 Add network list filtering

Add the filter option to the libpod endpoint.
Add support for the name filter on the docker endpoint.

Add apiv2 tests for the network list endpoints.
Enable podman network integration tests for remote.

Signed-off-by: Paul Holzinger <paul.holzinger@web.de>

pkg/api/handlers/compat/networks.go

@@ -5,6 +5,7 @@ import (
 	"net"
 	"net/http"
 	"os"
+	"strings"
 	"syscall"
 	"time"
 
@@ -177,9 +178,11 @@ func ListNetworks(w http.ResponseWriter, r *http.Request) {
 		utils.InternalServerError(w, err)
 		return
 	}
+
+	filterNames, nameFilterExists := query.Filters["name"]
 	// TODO remove when filters are implemented
-	if len(query.Filters) > 0 {
-		utils.InternalServerError(w, errors.New("filters for listing networks is not implemented"))
+	if (!nameFilterExists && len(query.Filters) > 0) || len(query.Filters) > 1 {
+		utils.InternalServerError(w, errors.New("only the name filter for listing networks is implemented"))
 		return
 	}
 	netNames, err := network.GetNetworkNamesFromFileSystem(config)
@@ -187,6 +190,21 @@ func ListNetworks(w http.ResponseWriter, r *http.Request) {
 		utils.InternalServerError(w, err)
 		return
 	}
+
+	// filter by name
+	if nameFilterExists {
+		names := []string{}
+		for _, name := range netNames {
+			for _, filter := range filterNames {
+				if strings.Contains(name, filter) {
+					names = append(names, name)
+					break
+				}
+			}
+		}
+		netNames = names
+	}
+
 	reports := make([]*types.NetworkResource, 0, len(netNames))
 	for _, name := range netNames {
 		report, err := getNetworkResourceByName(name, runtime)