zrok/cmd/zrok/sharePrivate.go
2024-04-12 11:58:07 -04:00

399 lines
9.1 KiB
Go

package main
import (
"fmt"
tea "github.com/charmbracelet/bubbletea"
"github.com/openziti/zrok/endpoints"
"github.com/openziti/zrok/endpoints/drive"
"github.com/openziti/zrok/endpoints/proxy"
"github.com/openziti/zrok/endpoints/socks"
"github.com/openziti/zrok/endpoints/tcpTunnel"
"github.com/openziti/zrok/endpoints/udpTunnel"
"github.com/openziti/zrok/endpoints/vpn"
"github.com/openziti/zrok/environment"
"github.com/openziti/zrok/environment/env_core"
"github.com/openziti/zrok/sdk/golang/sdk"
"github.com/openziti/zrok/tui"
"github.com/sirupsen/logrus"
"github.com/spf13/cobra"
"net"
"os"
"os/signal"
"syscall"
)
func init() {
shareCmd.AddCommand(newSharePrivateCommand().cmd)
}
type sharePrivateCommand struct {
basicAuth []string
backendMode string
headless bool
insecure bool
closed bool
accessGrants []string
cmd *cobra.Command
}
func newSharePrivateCommand() *sharePrivateCommand {
cmd := &cobra.Command{
Use: "private [<target>]",
Short: "Share a target resource privately",
Args: cobra.RangeArgs(0, 1),
}
command := &sharePrivateCommand{cmd: cmd}
cmd.Flags().StringArrayVar(&command.basicAuth, "basic-auth", []string{}, "Basic authentication users (<username:password>,...")
cmd.Flags().StringVarP(&command.backendMode, "backend-mode", "b", "proxy", "The backend mode {proxy, web, tcpTunnel, udpTunnel, caddy, drive, socks, vpn}")
cmd.Flags().BoolVar(&command.headless, "headless", false, "Disable TUI and run headless")
cmd.Flags().BoolVar(&command.insecure, "insecure", false, "Enable insecure TLS certificate validation for <target>")
cmd.Flags().BoolVar(&command.closed, "closed", false, "Enable closed permission mode (see --access-grant)")
cmd.Flags().StringArrayVar(&command.accessGrants, "access-grant", []string{}, "zrok accounts that are allowed to access this share (see --closed)")
cmd.Run = command.run
return command
}
func (cmd *sharePrivateCommand) run(_ *cobra.Command, args []string) {
var target string
switch cmd.backendMode {
case "proxy":
if len(args) != 1 {
tui.Error("the 'proxy' backend mode expects a <target>", nil)
}
v, err := parseUrl(args[0])
if err != nil {
if !panicInstead {
tui.Error("invalid target endpoint URL", err)
}
panic(err)
}
target = v
case "web":
if len(args) != 1 {
tui.Error("the 'web' backend mode expects a <target>", nil)
}
target = args[0]
case "tcpTunnel":
if len(args) != 1 {
tui.Error("the 'tcpTunnel' backend mode expects a <target>", nil)
}
target = args[0]
case "udpTunnel":
if len(args) != 1 {
tui.Error("the 'udpTunnel' backend mode expects a <target>", nil)
}
target = args[0]
case "caddy":
if len(args) != 1 {
tui.Error("the 'caddy' backend mode expects a <target>", nil)
}
target = args[0]
cmd.headless = true
case "drive":
if len(args) != 1 {
tui.Error("the 'drive' backend mode expects a <target>", nil)
}
target = args[0]
case "socks":
if len(args) != 0 {
tui.Error("the 'socks' backend mode does not expect <target>", nil)
}
target = "socks"
case "vpn":
if len(args) == 1 {
_, _, err := net.ParseCIDR(args[0])
if err != nil {
tui.Error("the 'vpn' backend expect valid CIDR <target>", err)
}
target = args[0]
} else {
target = vpn.DefaultTarget()
}
default:
tui.Error(fmt.Sprintf("invalid backend mode '%v'; expected {proxy, web, tcpTunnel, udpTunnel, caddy, drive}", cmd.backendMode), nil)
}
root, err := environment.LoadRoot()
if err != nil {
if !panicInstead {
tui.Error("unable to load environment", err)
}
panic(err)
}
if !root.IsEnabled() {
tui.Error("unable to load environment; did you 'zrok enable'?", nil)
}
zif, err := root.ZitiIdentityNamed(root.EnvironmentIdentityName())
if err != nil {
if !panicInstead {
tui.Error("unable to load ziti identity configuration", err)
}
panic(err)
}
req := &sdk.ShareRequest{
BackendMode: sdk.BackendMode(cmd.backendMode),
ShareMode: sdk.PrivateShareMode,
BasicAuth: cmd.basicAuth,
Target: target,
}
if cmd.closed {
req.PermissionMode = sdk.ClosedPermissionMode
req.AccessGrants = cmd.accessGrants
}
shr, err := sdk.CreateShare(root, req)
if err != nil {
if !panicInstead {
tui.Error("unable to create share", err)
}
panic(err)
}
shareDescription := fmt.Sprintf("access your share with: %v", tui.Code.Render(fmt.Sprintf("zrok access private %v", shr.Token)))
mdl := newShareModel(shr.Token, []string{shareDescription}, sdk.PrivateShareMode, sdk.BackendMode(cmd.backendMode))
if !cmd.headless {
proxy.SetCaddyLoggingWriter(mdl)
}
c := make(chan os.Signal)
signal.Notify(c, os.Interrupt, syscall.SIGTERM)
go func() {
<-c
cmd.shutdown(root, shr)
os.Exit(0)
}()
requests := make(chan *endpoints.Request, 1024)
switch cmd.backendMode {
case "proxy":
cfg := &proxy.BackendConfig{
IdentityPath: zif,
EndpointAddress: target,
ShrToken: shr.Token,
Insecure: cmd.insecure,
Requests: requests,
}
be, err := proxy.NewBackend(cfg)
if err != nil {
if !panicInstead {
tui.Error("error creating proxy backend", err)
}
panic(err)
}
go func() {
if err := be.Run(); err != nil {
logrus.Errorf("error running http proxy backend: %v", err)
}
}()
case "web":
cfg := &proxy.CaddyWebBackendConfig{
IdentityPath: zif,
WebRoot: target,
ShrToken: shr.Token,
Requests: requests,
}
be, err := proxy.NewCaddyWebBackend(cfg)
if err != nil {
if !panicInstead {
tui.Error("error creating web backend", err)
}
panic(err)
}
go func() {
if err := be.Run(); err != nil {
logrus.Errorf("error running http web backend: %v", err)
}
}()
case "tcpTunnel":
cfg := &tcpTunnel.BackendConfig{
IdentityPath: zif,
EndpointAddress: target,
ShrToken: shr.Token,
RequestsChan: requests,
}
be, err := tcpTunnel.NewBackend(cfg)
if err != nil {
if !panicInstead {
tui.Error("error creating tcpTunnel backend", err)
}
panic(err)
}
go func() {
if err := be.Run(); err != nil {
logrus.Errorf("error running tcpTunnel backend: %v", err)
}
}()
case "udpTunnel":
cfg := &udpTunnel.BackendConfig{
IdentityPath: zif,
EndpointAddress: target,
ShrToken: shr.Token,
RequestsChan: requests,
}
be, err := udpTunnel.NewBackend(cfg)
if err != nil {
if !panicInstead {
tui.Error("error creating udpTunnel backend", err)
}
panic(err)
}
go func() {
if err := be.Run(); err != nil {
logrus.Errorf("error running udpTunnel backend: %v", err)
}
}()
case "caddy":
cfg := &proxy.CaddyfileBackendConfig{
CaddyfilePath: target,
Shr: shr,
Requests: requests,
}
be, err := proxy.NewCaddyfileBackend(cfg)
if err != nil {
cmd.shutdown(root, shr)
if !panicInstead {
tui.Error("error creating caddy backend", err)
}
panic(err)
}
go func() {
if err := be.Run(); err != nil {
logrus.Errorf("error running caddy backend: %v", err)
}
}()
case "drive":
cfg := &drive.BackendConfig{
IdentityPath: zif,
DriveRoot: target,
ShrToken: shr.Token,
Requests: requests,
}
be, err := drive.NewBackend(cfg)
if err != nil {
if !panicInstead {
tui.Error("error creating drive backend", err)
}
panic(err)
}
go func() {
if err := be.Run(); err != nil {
logrus.Errorf("error running drive backend: %v", err)
}
}()
case "socks":
cfg := &socks.BackendConfig{
IdentityPath: zif,
ShrToken: shr.Token,
Requests: requests,
}
be, err := socks.NewBackend(cfg)
if err != nil {
if !panicInstead {
tui.Error("error creating socks backend", err)
}
panic(err)
}
go func() {
if err := be.Run(); err != nil {
logrus.Errorf("error running socks backend: %v", err)
}
}()
case "vpn":
cfg := &vpn.BackendConfig{
IdentityPath: zif,
EndpointAddress: target,
ShrToken: shr.Token,
RequestsChan: requests,
}
be, err := vpn.NewBackend(cfg)
if err != nil {
if !panicInstead {
tui.Error("error creating VPN backend", err)
}
panic(err)
}
go func() {
if err := be.Run(); err != nil {
logrus.Errorf("error running VPN backend: %v", err)
}
}()
default:
tui.Error("invalid backend mode", nil)
}
if cmd.headless {
logrus.Infof("allow other to access your share with the following command:\nzrok access private %v", shr.Token)
for {
select {
case req := <-requests:
logrus.Infof("%v -> %v %v", req.RemoteAddr, req.Method, req.Path)
}
}
} else {
logrus.SetOutput(mdl)
prg := tea.NewProgram(mdl, tea.WithAltScreen())
mdl.prg = prg
go func() {
for {
select {
case req := <-requests:
prg.Send(req)
}
}
}()
if _, err := prg.Run(); err != nil {
tui.Error("An error occurred", err)
}
close(requests)
cmd.shutdown(root, shr)
}
}
func (cmd *sharePrivateCommand) shutdown(root env_core.Root, shr *sdk.Share) {
logrus.Debugf("shutting down '%v'", shr.Token)
if err := sdk.DeleteShare(root, shr); err != nil {
logrus.Errorf("error shutting down '%v': %v", shr.Token, err)
}
logrus.Debugf("shutdown complete")
}