Remote server support (#1423)

Author: amirejaz

cmd/thv/app/auth_flags.go

@@ -0,0 +1,48 @@
+package app
+
+import (
+	"time"
+
+	"github.com/spf13/cobra"
+)
+
+// RemoteAuthFlags holds the common remote authentication configuration
+type RemoteAuthFlags struct {
+	EnableRemoteAuth           bool
+	RemoteAuthClientID         string
+	RemoteAuthClientSecret     string
+	RemoteAuthClientSecretFile string
+	RemoteAuthScopes           []string
+	RemoteAuthSkipBrowser      bool
+	RemoteAuthTimeout          time.Duration
+	RemoteAuthCallbackPort     int
+	RemoteAuthIssuer           string
+	RemoteAuthAuthorizeURL     string
+	RemoteAuthTokenURL         string
+}
+
+// AddRemoteAuthFlags adds the common remote authentication flags to a command
+func AddRemoteAuthFlags(cmd *cobra.Command, config *RemoteAuthFlags) {
+	cmd.Flags().BoolVar(&config.EnableRemoteAuth, "remote-auth", false,
+		"Enable OAuth/OIDC authentication to remote MCP server")
+	cmd.Flags().StringVar(&config.RemoteAuthIssuer, "remote-auth-issuer", "",
+		"OAuth/OIDC issuer URL for remote server authentication (e.g., https://accounts.google.com)")
+	cmd.Flags().StringVar(&config.RemoteAuthClientID, "remote-auth-client-id", "",
+		"OAuth client ID for remote server authentication")
+	cmd.Flags().StringVar(&config.RemoteAuthClientSecret, "remote-auth-client-secret", "",
+		"OAuth client secret for remote server authentication (optional for PKCE)")
+	cmd.Flags().StringVar(&config.RemoteAuthClientSecretFile, "remote-auth-client-secret-file", "",
+		"Path to file containing OAuth client secret (alternative to --remote-auth-client-secret)")
+	cmd.Flags().StringSliceVar(&config.RemoteAuthScopes, "remote-auth-scopes", []string{},
+		"OAuth scopes to request for remote server authentication (defaults: OIDC uses 'openid,profile,email')")
+	cmd.Flags().BoolVar(&config.RemoteAuthSkipBrowser, "remote-auth-skip-browser", false,
+		"Skip opening browser for remote server OAuth flow")
+	cmd.Flags().DurationVar(&config.RemoteAuthTimeout, "remote-auth-timeout", 30*time.Second,
+		"Timeout for OAuth authentication flow (e.g., 30s, 1m, 2m30s)")
+	cmd.Flags().IntVar(&config.RemoteAuthCallbackPort, "remote-auth-callback-port", 8666,
+		"Port for OAuth callback server during remote authentication")
+	cmd.Flags().StringVar(&config.RemoteAuthAuthorizeURL, "remote-auth-authorize-url", "",
+		"OAuth authorization endpoint URL (alternative to --remote-auth-issuer for non-OIDC OAuth)")
+	cmd.Flags().StringVar(&config.RemoteAuthTokenURL, "remote-auth-token-url", "",
+		"OAuth token endpoint URL (alternative to --remote-auth-issuer for non-OIDC OAuth)")
+}