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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
package auth
import (
"context"
"go.mongodb.org/mongo-driver/x/bsonx/bsoncore"
"go.mongodb.org/mongo-driver/x/mongo/driver"
"go.mongodb.org/mongo-driver/x/mongo/driver/description"
"go.mongodb.org/mongo-driver/x/mongo/driver/operation"
)
// MongoDBX509 is the mechanism name for MongoDBX509.
const MongoDBX509 = "MONGODB-X509"
func newMongoDBX509Authenticator(cred *Cred) (Authenticator, error) {
return &MongoDBX509Authenticator{User: cred.Username}, nil
}
// MongoDBX509Authenticator uses X.509 certificates over TLS to authenticate a connection.
type MongoDBX509Authenticator struct {
User string
}
// Auth implements the Authenticator interface.
func (a *MongoDBX509Authenticator) Auth(ctx context.Context, desc description.Server, conn driver.Connection) error {
requestDoc := bsoncore.AppendInt32Element(nil, "authenticate", 1)
requestDoc = bsoncore.AppendStringElement(requestDoc, "mechanism", MongoDBX509)
if desc.WireVersion == nil || desc.WireVersion.Max < 5 {
requestDoc = bsoncore.AppendStringElement(requestDoc, "user", a.User)
}
authCmd := operation.
NewCommand(bsoncore.BuildDocument(nil, requestDoc)).
Database("$external").
Deployment(driver.SingleConnectionDeployment{conn})
err := authCmd.Execute(ctx)
if err != nil {
return newAuthError("round trip error", err)
}
return nil
}
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