serve: add auth proxy infrastructure

cmd/serve/proxy/proxyflags/proxyflags.go

@@ -0,0 +1,18 @@
+// Package proxyflags implements command line flags to set up a proxy
+package proxyflags
+
+import (
+	"github.com/rclone/rclone/cmd/serve/proxy"
+	"github.com/rclone/rclone/fs/config/flags"
+	"github.com/spf13/pflag"
+)
+
+// Options set by command line flags
+var (
+	Opt = proxy.DefaultOpt
+)
+
+// AddFlags adds the non filing system specific flags to the command
+func AddFlags(flagSet *pflag.FlagSet) {
+	flags.StringVarP(flagSet, &Opt.AuthProxy, "auth-proxy", "", Opt.AuthProxy, "A program to use to create the backend from the auth.")
+}