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db.go
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db.go
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// Copyright 2016 The LUCI Authors.
//
// 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
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package authdb
import (
"context"
"net"
"github.com/TriggerMail/luci-go/auth/identity"
"github.com/TriggerMail/luci-go/server/auth/signing"
)
// DB is interface to access a database of authorization related information.
//
// It is static read only object that represent snapshot of auth data at some
// moment in time.
type DB interface {
// IsAllowedOAuthClientID returns true if given OAuth2 client_id can be used
// to authenticate access for given email.
IsAllowedOAuthClientID(c context.Context, email, clientID string) (bool, error)
// IsMember returns true if the given identity belongs to any of the groups.
//
// Unknown groups are considered empty. May return errors if underlying
// datastore has issues.
IsMember(c context.Context, id identity.Identity, groups []string) (bool, error)
// CheckMembership returns groups from the given list the identity belongs to.
//
// Unlike IsMember, it doesn't stop on the first hit but continues evaluating
// all groups.
//
// Unknown groups are considered empty. The order of groups in the result may
// be different from the order in 'groups'.
//
// May return errors if underlying datastore has issues.
CheckMembership(c context.Context, id identity.Identity, groups []string) ([]string, error)
// GetCertificates returns a bundle with certificates of a trusted signer.
//
// Returns (nil, nil) if the given signer is not trusted.
//
// Returns errors (usually transient) if the bundle can't be fetched.
GetCertificates(c context.Context, id identity.Identity) (*signing.PublicCertificates, error)
// GetWhitelistForIdentity returns name of the IP whitelist to use to check
// IP of requests from given `ident`.
//
// It's used to restrict access for certain account to certain IP subnets.
//
// Returns ("", nil) if `ident` is not IP restricted.
GetWhitelistForIdentity(c context.Context, ident identity.Identity) (string, error)
// IsInWhitelist returns true if IP address belongs to given named
// IP whitelist.
//
// IP whitelist is a set of IP subnets. Unknown IP whitelists are considered
// empty. May return errors if underlying datastore has issues.
IsInWhitelist(c context.Context, ip net.IP, whitelist string) (bool, error)
// GetAuthServiceURL returns root URL ("https://<host>") of the auth service.
//
// Returns an error if the DB implementation is not using an auth service.
GetAuthServiceURL(c context.Context) (string, error)
// GetTokenServiceURL returns root URL ("https://<host>") of the token server.
//
// Returns an error if the DB implementation doesn't know how to retrieve it.
//
// Returns ("", nil) if the token server URL is not configured.
GetTokenServiceURL(c context.Context) (string, error)
}