build: move e2e dependencies into e2e/go.mod

Several packages are only used while running the e2e suite. These
packages are less important to update, as the they can not influence the
final executable that is part of the Ceph-CSI container-image.

By moving these dependencies out of the main Ceph-CSI go.mod, it is
easier to identify if a reported CVE affects Ceph-CSI, or only the
testing (like most of the Kubernetes CVEs).

Signed-off-by: Niels de Vos <ndevos@ibm.com>

e2e/vendor/k8s.io/cri-client/pkg/util/util_unix.go

@@ -0,0 +1,124 @@
+//go:build freebsd || linux || darwin
+// +build freebsd linux darwin
+
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package util
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"net/url"
+	"os"
+	"path/filepath"
+
+	"golang.org/x/sys/unix"
+)
+
+const (
+	// unixProtocol is the network protocol of unix socket.
+	unixProtocol = "unix"
+)
+
+// CreateListener creates a listener on the specified endpoint.
+func CreateListener(endpoint string) (net.Listener, error) {
+	protocol, addr, err := parseEndpointWithFallbackProtocol(endpoint, unixProtocol)
+	if err != nil {
+		return nil, err
+	}
+	if protocol != unixProtocol {
+		return nil, fmt.Errorf("only support unix socket endpoint")
+	}
+
+	// Unlink to cleanup the previous socket file.
+	err = unix.Unlink(addr)
+	if err != nil && !os.IsNotExist(err) {
+		return nil, fmt.Errorf("failed to unlink socket file %q: %w", addr, err)
+	}
+
+	if err := os.MkdirAll(filepath.Dir(addr), 0750); err != nil {
+		return nil, fmt.Errorf("error creating socket directory %q: %w", filepath.Dir(addr), err)
+	}
+
+	// Create the socket on a tempfile and move it to the destination socket to handle improper cleanup
+	file, err := os.CreateTemp(filepath.Dir(addr), "")
+	if err != nil {
+		return nil, fmt.Errorf("failed to create temporary file: %w", err)
+	}
+
+	if err := os.Remove(file.Name()); err != nil {
+		return nil, fmt.Errorf("failed to remove temporary file: %w", err)
+	}
+
+	l, err := net.Listen(protocol, file.Name())
+	if err != nil {
+		return nil, err
+	}
+
+	if err = os.Rename(file.Name(), addr); err != nil {
+		return nil, fmt.Errorf("failed to move temporary file to addr %q: %w", addr, err)
+	}
+
+	return l, nil
+}
+
+// GetAddressAndDialer returns the address parsed from the given endpoint and a context dialer.
+func GetAddressAndDialer(endpoint string) (string, func(ctx context.Context, addr string) (net.Conn, error), error) {
+	protocol, addr, err := parseEndpointWithFallbackProtocol(endpoint, unixProtocol)
+	if err != nil {
+		return "", nil, err
+	}
+	if protocol != unixProtocol {
+		return "", nil, fmt.Errorf("only support unix socket endpoint")
+	}
+
+	return addr, dial, nil
+}
+
+func dial(ctx context.Context, addr string) (net.Conn, error) {
+	return (&net.Dialer{}).DialContext(ctx, unixProtocol, addr)
+}
+
+func parseEndpointWithFallbackProtocol(endpoint string, fallbackProtocol string) (protocol string, addr string, err error) {
+	if protocol, addr, err = parseEndpoint(endpoint); err != nil && protocol == "" {
+		fallbackEndpoint := fallbackProtocol + "://" + endpoint
+		protocol, addr, err = parseEndpoint(fallbackEndpoint)
+	}
+	return
+}
+
+func parseEndpoint(endpoint string) (string, string, error) {
+	u, err := url.Parse(endpoint)
+	if err != nil {
+		return "", "", err
+	}
+
+	switch u.Scheme {
+	case "tcp":
+		return "tcp", u.Host, nil
+
+	case "unix":
+		return "unix", u.Path, nil
+
+	case "":
+		return "", "", fmt.Errorf("using %q as endpoint is deprecated, please consider using full url format", endpoint)
+
+	default:
+		return u.Scheme, "", fmt.Errorf("protocol %q not supported", u.Scheme)
+	}
+}

e2e/vendor/k8s.io/cri-client/pkg/util/util_unsupported.go

@@ -0,0 +1,36 @@
+//go:build !freebsd && !linux && !windows && !darwin
+// +build !freebsd,!linux,!windows,!darwin
+
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package util
+
+import (
+	"context"
+	"fmt"
+	"net"
+)
+
+// CreateListener creates a listener on the specified endpoint.
+func CreateListener(endpoint string) (net.Listener, error) {
+	return nil, fmt.Errorf("CreateListener is unsupported in this build")
+}
+
+// GetAddressAndDialer returns the address parsed from the given endpoint and a context dialer.
+func GetAddressAndDialer(endpoint string) (string, func(ctx context.Context, addr string) (net.Conn, error), error) {
+	return "", nil, fmt.Errorf("GetAddressAndDialer is unsupported in this build")
+}

e2e/vendor/k8s.io/cri-client/pkg/util/util_windows.go

@@ -0,0 +1,108 @@
+//go:build windows
+// +build windows
+
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package util
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"net/url"
+	"strings"
+
+	"github.com/Microsoft/go-winio"
+)
+
+const (
+	tcpProtocol   = "tcp"
+	npipeProtocol = "npipe"
+)
+
+// CreateListener creates a listener on the specified endpoint.
+func CreateListener(endpoint string) (net.Listener, error) {
+	protocol, addr, err := parseEndpoint(endpoint)
+	if err != nil {
+		return nil, err
+	}
+
+	switch protocol {
+	case tcpProtocol:
+		return net.Listen(tcpProtocol, addr)
+
+	case npipeProtocol:
+		return winio.ListenPipe(addr, nil)
+
+	default:
+		return nil, fmt.Errorf("only support tcp and npipe endpoint")
+	}
+}
+
+// GetAddressAndDialer returns the address parsed from the given endpoint and a context dialer.
+func GetAddressAndDialer(endpoint string) (string, func(ctx context.Context, addr string) (net.Conn, error), error) {
+	protocol, addr, err := parseEndpoint(endpoint)
+	if err != nil {
+		return "", nil, err
+	}
+
+	if protocol == tcpProtocol {
+		return addr, tcpDial, nil
+	}
+
+	if protocol == npipeProtocol {
+		return addr, npipeDial, nil
+	}
+
+	return "", nil, fmt.Errorf("only support tcp and npipe endpoint")
+}
+
+func tcpDial(ctx context.Context, addr string) (net.Conn, error) {
+	return (&net.Dialer{}).DialContext(ctx, tcpProtocol, addr)
+}
+
+func npipeDial(ctx context.Context, addr string) (net.Conn, error) {
+	return winio.DialPipeContext(ctx, addr)
+}
+
+func parseEndpoint(endpoint string) (string, string, error) {
+	// url.Parse doesn't recognize \, so replace with / first.
+	endpoint = strings.Replace(endpoint, "\\", "/", -1)
+	u, err := url.Parse(endpoint)
+	if err != nil {
+		return "", "", err
+	}
+
+	if u.Scheme == "tcp" {
+		return "tcp", u.Host, nil
+	} else if u.Scheme == "npipe" {
+		if strings.HasPrefix(u.Path, "//./pipe") {
+			return "npipe", u.Path, nil
+		}
+
+		// fallback host if not provided.
+		host := u.Host
+		if host == "" {
+			host = "."
+		}
+		return "npipe", fmt.Sprintf("//%s%s", host, u.Path), nil
+	} else if u.Scheme == "" {
+		return "", "", fmt.Errorf("Using %q as endpoint is deprecated, please consider using full url format", endpoint)
+	} else {
+		return u.Scheme, "", fmt.Errorf("protocol %q not supported", u.Scheme)
+	}
+}