gotosocial/internal/processing/federation/getfollowers.go
2021-12-20 18:42:19 +01:00

74 lines
2.6 KiB
Go

/*
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 federation
import (
"context"
"errors"
"fmt"
"net/url"
"github.com/superseriousbusiness/activity/streams"
"github.com/superseriousbusiness/gotosocial/internal/gtserror"
)
func (p *processor) GetFollowers(ctx context.Context, requestedUsername string, requestURL *url.URL) (interface{}, gtserror.WithCode) {
// get the account the request is referring to
requestedAccount, err := p.db.GetLocalAccountByUsername(ctx, requestedUsername)
if err != nil {
return nil, gtserror.NewErrorNotFound(fmt.Errorf("database error getting account with username %s: %s", requestedUsername, err))
}
// authenticate the request
requestingAccountURI, authenticated, err := p.federator.AuthenticateFederatedRequest(ctx, requestedUsername)
if err != nil || !authenticated {
return nil, gtserror.NewErrorNotAuthorized(errors.New("not authorized"), "not authorized")
}
requestingAccount, _, err := p.federator.GetRemoteAccount(ctx, requestedUsername, requestingAccountURI, false)
if err != nil {
return nil, gtserror.NewErrorNotAuthorized(err)
}
blocked, err := p.db.IsBlocked(ctx, requestedAccount.ID, requestingAccount.ID, true)
if err != nil {
return nil, gtserror.NewErrorInternalError(err)
}
if blocked {
return nil, gtserror.NewErrorNotAuthorized(fmt.Errorf("block exists between accounts %s and %s", requestedAccount.ID, requestingAccount.ID))
}
requestedAccountURI, err := url.Parse(requestedAccount.URI)
if err != nil {
return nil, gtserror.NewErrorInternalError(fmt.Errorf("error parsing url %s: %s", requestedAccount.URI, err))
}
requestedFollowers, err := p.federator.FederatingDB().Followers(ctx, requestedAccountURI)
if err != nil {
return nil, gtserror.NewErrorInternalError(fmt.Errorf("error fetching followers for uri %s: %s", requestedAccountURI.String(), err))
}
data, err := streams.Serialize(requestedFollowers)
if err != nil {
return nil, gtserror.NewErrorInternalError(err)
}
return data, nil
}