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// Copyright (C) MongoDB, Inc. 2017-present.
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
//+build gssapi
//+build windows linux darwin
package auth
import (
"context"
"fmt"
"net"
"go.mongodb.org/mongo-driver/x/mongo/driver"
"go.mongodb.org/mongo-driver/x/mongo/driver/auth/internal/gssapi"
"go.mongodb.org/mongo-driver/x/mongo/driver/description"
)
// GSSAPI is the mechanism name for GSSAPI.
const GSSAPI = "GSSAPI"
func newGSSAPIAuthenticator(cred *Cred) (Authenticator, error) {
if cred.Source != "" && cred.Source != "$external" {
return nil, newAuthError("GSSAPI source must be empty or $external", nil)
}
return &GSSAPIAuthenticator{
Username: cred.Username,
Password: cred.Password,
PasswordSet: cred.PasswordSet,
Props: cred.Props,
}, nil
}
// GSSAPIAuthenticator uses the GSSAPI algorithm over SASL to authenticate a connection.
type GSSAPIAuthenticator struct {
Username string
Password string
PasswordSet bool
Props map[string]string
}
// Auth authenticates the connection.
func (a *GSSAPIAuthenticator) Auth(ctx context.Context, desc description.Server, conn driver.Connection) error {
target := desc.Addr.String()
hostname, _, err := net.SplitHostPort(target)
if err != nil {
return newAuthError(fmt.Sprintf("invalid endpoint (%s) specified: %s", target, err), nil)
}
client, err := gssapi.New(hostname, a.Username, a.Password, a.PasswordSet, a.Props)
if err != nil {
return newAuthError("error creating gssapi", err)
}
return ConductSaslConversation(ctx, conn, "$external", client)
}
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