cloudflared-mirror/cmd/cloudflared/tunnel/credential_finder.go

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package tunnel
import (
"fmt"
"path/filepath"
"github.com/cloudflare/cloudflared/config"
"github.com/google/uuid"
"github.com/rs/zerolog"
"github.com/urfave/cli/v2"
)
// CredFinder can find the tunnel credentials file.
type CredFinder interface {
Path() (string, error)
}
// Implements CredFinder and looks for the credentials file at the given
// filepath.
type staticPath struct {
filePath string
fs fileSystem
}
func newStaticPath(filePath string, fs fileSystem) CredFinder {
return staticPath{
filePath: filePath,
fs: fs,
}
}
func (a staticPath) Path() (string, error) {
if a.filePath != "" && a.fs.validFilePath(a.filePath) {
return a.filePath, nil
}
return "", fmt.Errorf("Tunnel credentials file '%s' doesn't exist or is not a file", a.filePath)
}
// Implements CredFinder and looks for the credentials file in several directories
// searching for a file named <id>.json
type searchByID struct {
id uuid.UUID
c *cli.Context
log *zerolog.Logger
fs fileSystem
}
func newSearchByID(id uuid.UUID, c *cli.Context, log *zerolog.Logger, fs fileSystem) CredFinder {
return searchByID{
id: id,
c: c,
log: log,
fs: fs,
}
}
func (s searchByID) Path() (string, error) {
originCertPath := s.c.String("origincert")
originCertLog := s.log.With().
Str(LogFieldOriginCertPath, originCertPath).
Logger()
// Fallback to look for tunnel credentials in the origin cert directory
if originCertPath, err := findOriginCert(originCertPath, &originCertLog); err == nil {
originCertDir := filepath.Dir(originCertPath)
if filePath, err := tunnelFilePath(s.id, originCertDir); err == nil {
if s.fs.validFilePath(filePath) {
return filePath, nil
}
}
}
// Last resort look under default config directories
for _, configDir := range config.DefaultConfigSearchDirectories() {
if filePath, err := tunnelFilePath(s.id, configDir); err == nil {
if s.fs.validFilePath(filePath) {
return filePath, nil
}
}
}
return "", fmt.Errorf("tunnel credentials file not found")
}