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/*
GoToSocial
Copyright (C) 2021-2022 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 (
"context"
"crypto"
"net/url"
"sync"
"github.com/go-fed/httpsig"
"github.com/superseriousbusiness/activity/pub"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
)
// Transport wraps the pub.Transport interface with some additional
// functionality for fetching remote media.
type Transport interface {
pub.Transport
// DereferenceMedia fetches the bytes of the given media attachment IRI, with the expectedContentType.
DereferenceMedia(ctx context.Context, iri *url.URL, expectedContentType string) ([]byte, error)
// DereferenceInstance dereferences remote instance information, first by checking /api/v1/instance, and then by checking /.well-known/nodeinfo.
DereferenceInstance(ctx context.Context, iri *url.URL) (*gtsmodel.Instance, error)
// Finger performs a webfinger request with the given username and domain, and returns the bytes from the response body.
Finger(ctx context.Context, targetUsername string, targetDomains string) ([]byte, error)
}
// transport implements the Transport interface
type transport struct {
client pub.HttpClient
appAgent string
gofedAgent string
clock pub.Clock
pubKeyID string
privkey crypto.PrivateKey
sigTransport *pub.HttpSigTransport
getSigner httpsig.Signer
getSignerMu *sync.Mutex
}
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