Move deps from _workspace/ to vendor/

godep restore
pushd $GOPATH/src/github.com/appc/spec
git co master
popd
go get go4.org/errorutil
rm -rf Godeps
godep save ./...
git add vendor
git add -f $(git ls-files --other vendor/)
git co -- Godeps/LICENSES Godeps/.license_file_state Godeps/OWNERS

vendor/github.com/abbot/go-http-auth/auth.go

@@ -0,0 +1,48 @@
+package auth
+
+import "net/http"
+
+/* 
+ Request handlers must take AuthenticatedRequest instead of http.Request
+*/
+type AuthenticatedRequest struct {
+	http.Request
+	/* 
+	 Authenticated user name. Current API implies that Username is
+	 never empty, which means that authentication is always done
+	 before calling the request handler.
+	*/
+	Username string
+}
+
+/*
+ AuthenticatedHandlerFunc is like http.HandlerFunc, but takes
+ AuthenticatedRequest instead of http.Request
+*/
+type AuthenticatedHandlerFunc func(http.ResponseWriter, *AuthenticatedRequest)
+
+/*
+ Authenticator wraps an AuthenticatedHandlerFunc with
+ authentication-checking code.
+
+ Typical Authenticator usage is something like:
+
+   authenticator := SomeAuthenticator(...)
+   http.HandleFunc("/", authenticator(my_handler))
+
+ Authenticator wrapper checks the user authentication and calls the
+ wrapped function only after authentication has succeeded. Otherwise,
+ it returns a handler which initiates the authentication procedure.
+*/
+type Authenticator func(AuthenticatedHandlerFunc) http.HandlerFunc
+
+type AuthenticatorInterface interface {
+	Wrap(AuthenticatedHandlerFunc) http.HandlerFunc
+}
+
+func JustCheck(auth AuthenticatorInterface, wrapped http.HandlerFunc) http.HandlerFunc {
+	return auth.Wrap(func(w http.ResponseWriter, ar *AuthenticatedRequest) {
+		ar.Header.Set("X-Authenticated-Username", ar.Username)
+		wrapped(w, &ar.Request)
+	})
+}