84 lines
2.8 KiB
Go
84 lines
2.8 KiB
Go
// GoToSocial
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// Copyright (C) GoToSocial Authors admin@gotosocial.org
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// SPDX-License-Identifier: AGPL-3.0-or-later
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package fedi
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import (
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"context"
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"errors"
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"net/url"
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"github.com/superseriousbusiness/gotosocial/internal/db"
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"github.com/superseriousbusiness/gotosocial/internal/gtserror"
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"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
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)
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type commonAuth struct {
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handshakingURI *url.URL // Set to requestingAcct's URI if we're currently handshaking them.
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requestingAcct *gtsmodel.Account // Remote account making request to this instance.
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receivingAcct *gtsmodel.Account // Local account receiving the request.
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}
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func (p *Processor) authenticate(ctx context.Context, requestedUser string) (*commonAuth, gtserror.WithCode) {
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// First get the requested (receiving) LOCAL account with username from database.
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receiver, err := p.state.DB.GetAccountByUsernameDomain(ctx, requestedUser, "")
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if err != nil {
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if !errors.Is(err, db.ErrNoEntries) {
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// Real db error.
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err = gtserror.Newf("db error getting account %s: %w", requestedUser, err)
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return nil, gtserror.NewErrorInternalError(err)
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}
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// Account just not found in the db.
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return nil, gtserror.NewErrorNotFound(err)
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}
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// Ensure request signed, and use signature URI to
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// get requesting account, dereferencing if necessary.
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pubKeyAuth, errWithCode := p.federator.AuthenticateFederatedRequest(ctx, requestedUser)
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if errWithCode != nil {
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return nil, errWithCode
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}
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if pubKeyAuth.Handshaking {
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// We're still handshaking so we
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// don't know the requester yet.
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return &commonAuth{
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handshakingURI: pubKeyAuth.OwnerURI,
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receivingAcct: receiver,
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}, nil
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}
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// Get requester from auth.
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requester := pubKeyAuth.Owner
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// Ensure block does not exist between receiver and requester.
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blocked, err := p.state.DB.IsEitherBlocked(ctx, receiver.ID, requester.ID)
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if err != nil {
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err := gtserror.Newf("error checking block: %w", err)
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return nil, gtserror.NewErrorInternalError(err)
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} else if blocked {
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const text = "block exists between accounts"
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return nil, gtserror.NewErrorForbidden(errors.New(text))
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}
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return &commonAuth{
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requestingAcct: requester,
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receivingAcct: receiver,
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}, nil
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}
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