open-vault/vendor/github.com/hashicorp/vault-plugin-database-mongodbatlas/mongodbatlas.go
2020-02-07 14:09:39 -08:00

201 lines
5.5 KiB
Go

package mongodbatlas
import (
"context"
"encoding/json"
"errors"
"fmt"
"time"
"github.com/hashicorp/vault/api"
"github.com/hashicorp/vault/sdk/database/dbplugin"
"github.com/hashicorp/vault/sdk/database/helper/credsutil"
"github.com/hashicorp/vault/sdk/database/helper/dbutil"
"github.com/mongodb/go-client-mongodb-atlas/mongodbatlas"
)
const mongoDBAtlasTypeName = "mongodbatlas"
// Verify interface is implemented
var _ dbplugin.Database = &MongoDBAtlas{}
type MongoDBAtlas struct {
*mongoDBAtlasConnectionProducer
credsutil.CredentialsProducer
}
func New() (interface{}, error) {
db := new()
dbType := dbplugin.NewDatabaseErrorSanitizerMiddleware(db, db.secretValues)
return dbType, nil
}
func new() *MongoDBAtlas {
connProducer := &mongoDBAtlasConnectionProducer{}
connProducer.Type = mongoDBAtlasTypeName
credsProducer := &credsutil.SQLCredentialsProducer{
DisplayNameLen: 15,
RoleNameLen: 15,
UsernameLen: 100,
Separator: "-",
}
return &MongoDBAtlas{
mongoDBAtlasConnectionProducer: connProducer,
CredentialsProducer: credsProducer,
}
}
// Run instantiates a MongoDBAtlas object, and runs the RPC server for the plugin
func Run(apiTLSConfig *api.TLSConfig) error {
dbType, err := New()
if err != nil {
return err
}
dbplugin.Serve(dbType.(dbplugin.Database), api.VaultPluginTLSProvider(apiTLSConfig))
return nil
}
func (m *MongoDBAtlas) CreateUser(ctx context.Context, statements dbplugin.Statements, usernameConfig dbplugin.UsernameConfig, expiration time.Time) (username string, password string, err error) {
// Grab the lock
m.Lock()
defer m.Unlock()
statements = dbutil.StatementCompatibilityHelper(statements)
if len(statements.Creation) == 0 {
return "", "", dbutil.ErrEmptyCreationStatement
}
client, err := m.getConnection(ctx)
if err != nil {
return "", "", err
}
username, err = m.GenerateUsername(usernameConfig)
if err != nil {
return "", "", err
}
password, err = m.GeneratePassword()
if err != nil {
return "", "", err
}
// Unmarshal statements.CreationStatements into mongodbRoles
var databaseUser mongoDBAtlasStatement
err = json.Unmarshal([]byte(statements.Creation[0]), &databaseUser)
if err != nil {
return "", "", fmt.Errorf("Error unmarshalling statement %s", err)
}
// Default to "admin" if no db provided
if databaseUser.DatabaseName == "" {
databaseUser.DatabaseName = "admin"
}
if len(databaseUser.Roles) == 0 {
return "", "", fmt.Errorf("roles array is required in creation statement")
}
databaseUserRequest := &mongodbatlas.DatabaseUser{
Username: username,
Password: password,
DatabaseName: databaseUser.DatabaseName,
Roles: databaseUser.Roles,
}
_, _, err = client.DatabaseUsers.Create(ctx, m.ProjectID, databaseUserRequest)
if err != nil {
return "", "", err
}
return username, password, nil
}
// RenewUser is not supported on MongoDB, so this is a no-op.
func (m *MongoDBAtlas) RenewUser(ctx context.Context, statements dbplugin.Statements, username string, expiration time.Time) error {
// NOOP
return nil
}
// RevokeUser drops the specified user from the authentication database. If none is provided
// in the revocation statement, the default "admin" authentication database will be assumed.
func (m *MongoDBAtlas) RevokeUser(ctx context.Context, statements dbplugin.Statements, username string) error {
m.Lock()
defer m.Unlock()
statements = dbutil.StatementCompatibilityHelper(statements)
client, err := m.getConnection(ctx)
if err != nil {
return err
}
_, err = client.DatabaseUsers.Delete(ctx, m.ProjectID, username)
return err
}
// SetCredentials uses provided information to set/create a user in the
// database. Unlike CreateUser, this method requires a username be provided and
// uses the name given, instead of generating a name. This is used for creating
// and setting the password of static accounts, as well as rolling back
// passwords in the database in the event an updated database fails to save in
// Vault's storage.
func (m *MongoDBAtlas) SetCredentials(ctx context.Context, statements dbplugin.Statements, staticUser dbplugin.StaticUserConfig) (username, password string, err error) {
// Grab the lock
m.Lock()
defer m.Unlock()
statements = dbutil.StatementCompatibilityHelper(statements)
if len(statements.Creation) == 0 {
return "", "", dbutil.ErrEmptyCreationStatement
}
client, err := m.getConnection(ctx)
if err != nil {
return "", "", err
}
username = staticUser.Username
password = staticUser.Password
databaseUserRequest := &mongodbatlas.DatabaseUser{
Password: password,
}
_, _, err = client.DatabaseUsers.Update(context.Background(), m.ProjectID, username, databaseUserRequest)
if err != nil {
return "", "", err
}
return username, password, nil
}
func (m *MongoDBAtlas) getConnection(ctx context.Context) (*mongodbatlas.Client, error) {
client, err := m.Connection(ctx)
if err != nil {
return nil, err
}
return client.(*mongodbatlas.Client), nil
}
// RotateRootCredentials is not currently supported on MongoDB
func (m *MongoDBAtlas) RotateRootCredentials(ctx context.Context, statements []string) (map[string]interface{}, error) {
return nil, errors.New("root credential rotation is not currently implemented in this database secrets engine")
}
// Type returns the TypeName for this backend
func (m *MongoDBAtlas) Type() (string, error) {
return mongoDBAtlasTypeName, nil
}
type mongoDBAtlasStatement struct {
DatabaseName string `json:"database_name"`
Roles []mongodbatlas.Role `json:"roles,omitempty"`
}