263 lines
8.6 KiB
Go
263 lines
8.6 KiB
Go
package tunnel
|
|
|
|
import (
|
|
"fmt"
|
|
"io/ioutil"
|
|
"os"
|
|
"path/filepath"
|
|
"strings"
|
|
|
|
"github.com/cloudflare/cloudflared/cmd/cloudflared/buildinfo"
|
|
"github.com/cloudflare/cloudflared/cmd/cloudflared/config"
|
|
"github.com/cloudflare/cloudflared/ingress"
|
|
"github.com/cloudflare/cloudflared/logger"
|
|
"github.com/cloudflare/cloudflared/origin"
|
|
"github.com/cloudflare/cloudflared/tlsconfig"
|
|
tunnelpogs "github.com/cloudflare/cloudflared/tunnelrpc/pogs"
|
|
"github.com/cloudflare/cloudflared/validation"
|
|
|
|
"github.com/google/uuid"
|
|
"github.com/mitchellh/go-homedir"
|
|
"github.com/pkg/errors"
|
|
"github.com/urfave/cli/v2"
|
|
"golang.org/x/crypto/ssh/terminal"
|
|
)
|
|
|
|
var (
|
|
developerPortal = "https://developers.cloudflare.com/argo-tunnel"
|
|
quickStartUrl = developerPortal + "/quickstart/quickstart/"
|
|
serviceUrl = developerPortal + "/reference/service/"
|
|
argumentsUrl = developerPortal + "/reference/arguments/"
|
|
)
|
|
|
|
// returns the first path that contains a cert.pem file. If none of the DefaultConfigSearchDirectories
|
|
// contains a cert.pem file, return empty string
|
|
func findDefaultOriginCertPath() string {
|
|
for _, defaultConfigDir := range config.DefaultConfigSearchDirectories() {
|
|
originCertPath, _ := homedir.Expand(filepath.Join(defaultConfigDir, config.DefaultCredentialFile))
|
|
if ok, _ := config.FileExists(originCertPath); ok {
|
|
return originCertPath
|
|
}
|
|
}
|
|
return ""
|
|
}
|
|
|
|
func generateRandomClientID(logger logger.Service) (string, error) {
|
|
u, err := uuid.NewRandom()
|
|
if err != nil {
|
|
logger.Errorf("couldn't create UUID for client ID %s", err)
|
|
return "", err
|
|
}
|
|
return u.String(), nil
|
|
}
|
|
|
|
func logClientOptions(c *cli.Context, logger logger.Service) {
|
|
flags := make(map[string]interface{})
|
|
for _, flag := range c.LocalFlagNames() {
|
|
flags[flag] = c.Generic(flag)
|
|
}
|
|
|
|
sliceFlags := []string{"header", "tag", "proxy-dns-upstream", "upstream", "edge"}
|
|
for _, sliceFlag := range sliceFlags {
|
|
if len(c.StringSlice(sliceFlag)) > 0 {
|
|
flags[sliceFlag] = strings.Join(c.StringSlice(sliceFlag), ", ")
|
|
}
|
|
}
|
|
|
|
if len(flags) > 0 {
|
|
logger.Infof("Environment variables %v", flags)
|
|
}
|
|
|
|
envs := make(map[string]string)
|
|
// Find env variables for Argo Tunnel
|
|
for _, env := range os.Environ() {
|
|
// All Argo Tunnel env variables start with TUNNEL_
|
|
if strings.Contains(env, "TUNNEL_") {
|
|
vars := strings.Split(env, "=")
|
|
if len(vars) == 2 {
|
|
envs[vars[0]] = vars[1]
|
|
}
|
|
}
|
|
}
|
|
if len(envs) > 0 {
|
|
logger.Infof("Environmental variables %v", envs)
|
|
}
|
|
}
|
|
|
|
func dnsProxyStandAlone(c *cli.Context) bool {
|
|
return c.IsSet("proxy-dns") && (!c.IsSet("hostname") && !c.IsSet("tag") && !c.IsSet("hello-world"))
|
|
}
|
|
|
|
func findOriginCert(c *cli.Context, logger logger.Service) (string, error) {
|
|
originCertPath := c.String("origincert")
|
|
if originCertPath == "" {
|
|
logger.Infof("Cannot determine default origin certificate path. No file %s in %v", config.DefaultCredentialFile, config.DefaultConfigSearchDirectories())
|
|
if isRunningFromTerminal() {
|
|
logger.Errorf("You need to specify the origin certificate path with --origincert option, or set TUNNEL_ORIGIN_CERT environment variable. See %s for more information.", argumentsUrl)
|
|
return "", fmt.Errorf("Client didn't specify origincert path when running from terminal")
|
|
} else {
|
|
logger.Errorf("You need to specify the origin certificate path by specifying the origincert option in the configuration file, or set TUNNEL_ORIGIN_CERT environment variable. See %s for more information.", serviceUrl)
|
|
return "", fmt.Errorf("Client didn't specify origincert path")
|
|
}
|
|
}
|
|
var err error
|
|
originCertPath, err = homedir.Expand(originCertPath)
|
|
if err != nil {
|
|
logger.Errorf("Cannot resolve path %s: %s", originCertPath, err)
|
|
return "", fmt.Errorf("Cannot resolve path %s", originCertPath)
|
|
}
|
|
// Check that the user has acquired a certificate using the login command
|
|
ok, err := config.FileExists(originCertPath)
|
|
if err != nil {
|
|
logger.Errorf("Cannot check if origin cert exists at path %s", originCertPath)
|
|
return "", fmt.Errorf("Cannot check if origin cert exists at path %s", originCertPath)
|
|
}
|
|
if !ok {
|
|
logger.Errorf(`Cannot find a valid certificate for your origin at the path:
|
|
|
|
%s
|
|
|
|
If the path above is wrong, specify the path with the -origincert option.
|
|
If you don't have a certificate signed by Cloudflare, run the command:
|
|
|
|
%s login
|
|
`, originCertPath, os.Args[0])
|
|
return "", fmt.Errorf("Cannot find a valid certificate at the path %s", originCertPath)
|
|
}
|
|
|
|
return originCertPath, nil
|
|
}
|
|
|
|
func readOriginCert(originCertPath string, logger logger.Service) ([]byte, error) {
|
|
logger.Debugf("Reading origin cert from %s", originCertPath)
|
|
|
|
// Easier to send the certificate as []byte via RPC than decoding it at this point
|
|
originCert, err := ioutil.ReadFile(originCertPath)
|
|
if err != nil {
|
|
logger.Errorf("Cannot read %s to load origin certificate: %s", originCertPath, err)
|
|
return nil, fmt.Errorf("Cannot read %s to load origin certificate", originCertPath)
|
|
}
|
|
return originCert, nil
|
|
}
|
|
|
|
func getOriginCert(c *cli.Context, logger logger.Service) ([]byte, error) {
|
|
if originCertPath, err := findOriginCert(c, logger); err != nil {
|
|
return nil, err
|
|
} else {
|
|
return readOriginCert(originCertPath, logger)
|
|
}
|
|
}
|
|
|
|
func prepareTunnelConfig(
|
|
c *cli.Context,
|
|
buildInfo *buildinfo.BuildInfo,
|
|
version string,
|
|
logger logger.Service,
|
|
transportLogger logger.Service,
|
|
namedTunnel *origin.NamedTunnelConfig,
|
|
) (*origin.TunnelConfig, error) {
|
|
isNamedTunnel := namedTunnel != nil
|
|
compatibilityMode := !isNamedTunnel
|
|
|
|
hostname, err := validation.ValidateHostname(c.String("hostname"))
|
|
if err != nil {
|
|
logger.Errorf("Invalid hostname: %s", err)
|
|
return nil, errors.Wrap(err, "Invalid hostname")
|
|
}
|
|
isFreeTunnel := hostname == ""
|
|
clientID := c.String("id")
|
|
if !c.IsSet("id") {
|
|
clientID, err = generateRandomClientID(logger)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
tags, err := NewTagSliceFromCLI(c.StringSlice("tag"))
|
|
if err != nil {
|
|
logger.Errorf("Tag parse failure: %s", err)
|
|
return nil, errors.Wrap(err, "Tag parse failure")
|
|
}
|
|
|
|
tags = append(tags, tunnelpogs.Tag{Name: "ID", Value: clientID})
|
|
|
|
var originCert []byte
|
|
if !isFreeTunnel {
|
|
originCert, err = getOriginCert(c, logger)
|
|
if err != nil {
|
|
return nil, errors.Wrap(err, "Error getting origin cert")
|
|
}
|
|
}
|
|
|
|
tunnelMetrics := origin.NewTunnelMetrics()
|
|
|
|
var ingressRules ingress.Ingress
|
|
if namedTunnel != nil {
|
|
clientUUID, err := uuid.NewRandom()
|
|
if err != nil {
|
|
return nil, errors.Wrap(err, "can't generate clientUUID")
|
|
}
|
|
namedTunnel.Client = tunnelpogs.ClientInfo{
|
|
ClientID: clientUUID[:],
|
|
Features: []string{origin.FeatureSerializedHeaders},
|
|
Version: version,
|
|
Arch: fmt.Sprintf("%s_%s", buildInfo.GoOS, buildInfo.GoArch),
|
|
}
|
|
ingressRules, err = ingress.ParseIngress(config.GetConfiguration())
|
|
if err != nil && err != ingress.ErrNoIngressRules {
|
|
return nil, err
|
|
}
|
|
if !ingressRules.IsEmpty() && c.IsSet("url") {
|
|
return nil, ingress.ErrURLIncompatibleWithIngress
|
|
}
|
|
}
|
|
|
|
// Convert single-origin configuration into multi-origin configuration.
|
|
if ingressRules.IsEmpty() {
|
|
ingressRules, err = ingress.NewSingleOrigin(c, compatibilityMode, logger)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
toEdgeTLSConfig, err := tlsconfig.CreateTunnelConfig(c, isNamedTunnel)
|
|
if err != nil {
|
|
logger.Errorf("unable to create TLS config to connect with edge: %s", err)
|
|
return nil, errors.Wrap(err, "unable to create TLS config to connect with edge")
|
|
}
|
|
return &origin.TunnelConfig{
|
|
BuildInfo: buildInfo,
|
|
ClientID: clientID,
|
|
CompressionQuality: c.Uint64("compression-quality"),
|
|
EdgeAddrs: c.StringSlice("edge"),
|
|
GracePeriod: c.Duration("grace-period"),
|
|
HAConnections: c.Int("ha-connections"),
|
|
HeartbeatInterval: c.Duration("heartbeat-interval"),
|
|
Hostname: hostname,
|
|
IncidentLookup: origin.NewIncidentLookup(),
|
|
IsAutoupdated: c.Bool("is-autoupdated"),
|
|
IsFreeTunnel: isFreeTunnel,
|
|
LBPool: c.String("lb-pool"),
|
|
Logger: logger,
|
|
TransportLogger: transportLogger,
|
|
MaxHeartbeats: c.Uint64("heartbeat-count"),
|
|
Metrics: tunnelMetrics,
|
|
MetricsUpdateFreq: c.Duration("metrics-update-freq"),
|
|
OriginCert: originCert,
|
|
ReportedVersion: version,
|
|
Retries: c.Uint("retries"),
|
|
RunFromTerminal: isRunningFromTerminal(),
|
|
Tags: tags,
|
|
TlsConfig: toEdgeTLSConfig,
|
|
NamedTunnel: namedTunnel,
|
|
ReplaceExisting: c.Bool("force"),
|
|
IngressRules: ingressRules,
|
|
// turn off use of reconnect token and auth refresh when using named tunnels
|
|
UseReconnectToken: compatibilityMode && c.Bool("use-reconnect-token"),
|
|
}, nil
|
|
}
|
|
|
|
func isRunningFromTerminal() bool {
|
|
return terminal.IsTerminal(int(os.Stdout.Fd()))
|
|
}
|