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// GoToSocial
// Copyright (C) GoToSocial Authors admin@gotosocial.org
// SPDX-License-Identifier: AGPL-3.0-or-later
//
// 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 fedi
import (
"context"
"errors"
"code.superseriousbusiness.org/gotosocial/internal/ap"
"code.superseriousbusiness.org/gotosocial/internal/db"
"code.superseriousbusiness.org/gotosocial/internal/gtscontext"
"code.superseriousbusiness.org/gotosocial/internal/gtserror"
)
// UserGet handles getting an AP representation of an account.
// It does auth before returning a JSON serializable interface to the caller.
func (p *Processor) UserGet(
ctx context.Context,
requestedUser string,
) (any, gtserror.WithCode) {
// Authenticate incoming request, getting related accounts.
//
// We may currently be handshaking with the remote account
// making the request. Unlike with other fedi endpoints,
// don't bother checking this; if we're still handshaking
// just serve the AP representation of our account anyway.
//
// This ensures that we don't get stuck in a loop with another
// GtS instance, where each instance is trying repeatedly to
// dereference the other account that's making the request
// before it will reveal its own account.
//
// Instead, we end up in an 'I'll show you mine if you show me
// yours' situation, where we sort of agree to reveal each
// other's profiles at the same time.
auth, errWithCode := p.authenticate(ctx, requestedUser)
if errWithCode != nil {
return nil, errWithCode
}
// Generate the proper AP representation.
accountable, err := p.converter.AccountToAS(ctx, auth.receiver)
if err != nil {
err := gtserror.Newf("error converting to accountable: %w", err)
return nil, gtserror.NewErrorInternalError(err)
}
data, err := ap.Serialize(accountable)
if err != nil {
err := gtserror.Newf("error serializing accountable: %w", err)
return nil, gtserror.NewErrorInternalError(err)
}
return data, nil
}
// UserGetMinimal returns a minimal AP representation
// of the requested account, containing just the public
// key, without doing authentication.
func (p *Processor) UserGetMinimal(
ctx context.Context,
requestedUser string,
) (any, gtserror.WithCode) {
acct, err := p.state.DB.GetAccountByUsernameDomain(
gtscontext.SetBarebones(ctx),
requestedUser, "",
)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
err := gtserror.Newf("db error getting account %s: %w", requestedUser, err)
return nil, gtserror.NewErrorInternalError(err)
}
if acct == nil {
err := gtserror.Newf("account %s not found in the db", requestedUser)
return nil, gtserror.NewErrorNotFound(err)
}
// Generate minimal AP representation.
accountable, err := p.converter.AccountToASMinimal(ctx, acct)
if err != nil {
err := gtserror.Newf("error converting to accountable: %w", err)
return nil, gtserror.NewErrorInternalError(err)
}
data, err := ap.Serialize(accountable)
if err != nil {
err := gtserror.Newf("error serializing accountable: %w", err)
return nil, gtserror.NewErrorInternalError(err)
}
return data, nil
}
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