gotosocial/internal/transport/controller.go
2021-04-26 21:18:39 +02:00

73 lines
2.5 KiB
Go

/*
GoToSocial
Copyright (C) 2021 GoToSocial Authors admin@gotosocial.org
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package transport
import (
"crypto"
"fmt"
"github.com/go-fed/activity/pub"
"github.com/go-fed/httpsig"
"github.com/sirupsen/logrus"
"github.com/superseriousbusiness/gotosocial/internal/config"
"github.com/superseriousbusiness/gotosocial/internal/db"
)
// Controller generates transports for use in making federation requests to other servers.
type Controller interface {
NewTransport(pubKeyID string, privkey crypto.PrivateKey) (pub.Transport, error)
}
type controller struct {
config *config.Config
db db.DB
clock pub.Clock
client pub.HttpClient
appAgent string
}
// NewController returns an implementation of the Controller interface for creating new transports
func NewController(config *config.Config, db db.DB, clock pub.Clock, client pub.HttpClient, log *logrus.Logger) Controller {
return &controller{
config: config,
db: db,
clock: clock,
client: client,
appAgent: fmt.Sprintf("%s %s", config.ApplicationName, config.Host),
}
}
func (c *controller) NewTransport(pubKeyID string, privkey crypto.PrivateKey) (pub.Transport, error) {
prefs := []httpsig.Algorithm{httpsig.Algorithm("rsa-sha256"), httpsig.Algorithm("rsa-sha512")}
digestAlgo := httpsig.DigestAlgorithm("SHA-256")
getHeaders := []string{"(request-target)", "Date"}
postHeaders := []string{"(request-target)", "Date", "Digest"}
getSigner, _, err := httpsig.NewSigner(prefs, digestAlgo, getHeaders, httpsig.Signature)
if err != nil {
return nil, fmt.Errorf("error creating get signer: %s", err)
}
postSigner, _, err := httpsig.NewSigner(prefs, digestAlgo, postHeaders, httpsig.Signature)
if err != nil {
return nil, fmt.Errorf("error creating post signer: %s", err)
}
return pub.NewHttpSigTransport(c.client, c.appAgent, c.clock, getSigner, postSigner, pubKeyID, privkey), nil
}