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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 account
import (
"context"
"errors"
"fmt"
"net/url"
"slices"
apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
"github.com/superseriousbusiness/gotosocial/internal/gtserror"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
"github.com/superseriousbusiness/gotosocial/internal/util/xslices"
)
func (p *Processor) Alias(
ctx context.Context,
account *gtsmodel.Account,
newAKAURIStrs []string,
) (*apimodel.Account, gtserror.WithCode) {
if slices.Equal(
newAKAURIStrs,
account.AlsoKnownAsURIs,
) {
// No changes to do
// here. Return early.
return p.c.GetAPIAccountSensitive(ctx, account)
}
newLen := len(newAKAURIStrs)
if newLen == 0 {
// Simply unset existing
// aliases and return early.
account.AlsoKnownAsURIs = nil
account.AlsoKnownAs = nil
err := p.state.DB.UpdateAccount(ctx, account, "also_known_as_uris")
if err != nil {
err := gtserror.Newf("db error updating also_known_as_uri: %w", err)
return nil, gtserror.NewErrorInternalError(err)
}
return p.c.GetAPIAccountSensitive(ctx, account)
}
// We need to set new AKA URIs!
//
// First parse them to URI ptrs and
// normalized string representations.
//
// Use this cheeky type to avoid
// repeatedly calling uri.String().
type uri struct {
uri *url.URL // Parsed URI.
str string // uri.String().
}
newAKAs := make([]uri, newLen)
for i, newAKAURIStr := range newAKAURIStrs {
newAKAURI, err := url.Parse(newAKAURIStr)
if err != nil {
err := fmt.Errorf(
"invalid also_known_as_uri (%s) provided in account alias request: %w",
newAKAURIStr, err,
)
return nil, gtserror.NewErrorBadRequest(err, err.Error())
}
// We only deref http or https, so check this.
if newAKAURI.Scheme != "https" && newAKAURI.Scheme != "http" {
err := fmt.Errorf(
"invalid also_known_as_uri (%s) provided in account alias request: %w",
newAKAURIStr, errors.New("uri must not be empty and scheme must be http or https"),
)
return nil, gtserror.NewErrorBadRequest(err, err.Error())
}
newAKAs[i].uri = newAKAURI
newAKAs[i].str = newAKAURI.String()
}
// For each deduped entry, get and
// check the target account, and set.
for _, newAKA := range newAKAs {
// Don't let account do anything
// daft by aliasing to itself.
if newAKA.str == account.URI ||
newAKA.str == account.URL {
continue
}
// Ensure we have account dereferenced.
targetAccount, _, err := p.federator.GetAccountByURI(ctx,
account.Username,
newAKA.uri,
)
if err != nil {
err := fmt.Errorf(
"error dereferencing also_known_as_uri (%s) account: %w",
newAKA.str, err,
)
return nil, gtserror.NewErrorUnprocessableEntity(err, err.Error())
}
// Target must not be suspended.
if !targetAccount.SuspendedAt.IsZero() {
err := fmt.Errorf(
"target account %s is suspended from this instance; "+
"you will not be able to set alsoKnownAs to that account",
newAKA.str,
)
return nil, gtserror.NewErrorUnprocessableEntity(err, err.Error())
}
// Alrighty-roo, looks good, add this one.
account.AlsoKnownAsURIs = append(account.AlsoKnownAsURIs, targetAccount.URI)
account.AlsoKnownAs = append(account.AlsoKnownAs, targetAccount)
}
// Dedupe URIs + accounts, in case someone
// provided both an account URL and an
// account URI above, for the same account.
account.AlsoKnownAsURIs = xslices.Deduplicate(account.AlsoKnownAsURIs)
account.AlsoKnownAs = xslices.DeduplicateFunc(
account.AlsoKnownAs,
func(a *gtsmodel.Account) string {
return a.URI
},
)
err := p.state.DB.UpdateAccount(ctx, account, "also_known_as_uris")
if err != nil {
err := gtserror.Newf("db error updating also_known_as_uri: %w", err)
return nil, gtserror.NewErrorInternalError(err)
}
return p.c.GetAPIAccountSensitive(ctx, account)
}
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