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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/config"
"code.superseriousbusiness.org/gotosocial/internal/db"
"code.superseriousbusiness.org/gotosocial/internal/gtserror"
)
// EmojiGet handles the GET for an emoji originating from this instance.
func (p *Processor) EmojiGet(ctx context.Context, emojiID string) (any, gtserror.WithCode) {
// Authenticate incoming request.
//
// Pass hostname string to this function to indicate
// it's the instance account being requested, as
// emojis are always owned by the instance account.
auth, errWithCode := p.authenticate(ctx, config.GetHost())
if errWithCode != nil {
return nil, errWithCode
}
if auth.handshakingURI != nil {
// We're currently handshaking, which means
// we don't know this account yet. This should
// be a very rare race condition.
err := gtserror.Newf("network race handshaking %s", auth.handshakingURI)
return nil, gtserror.NewErrorInternalError(err)
}
// Get the requested emoji.
emoji, err := p.state.DB.GetEmojiByID(ctx, emojiID)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
err := gtserror.Newf("db error getting emoji %s: %w", emojiID, err)
return nil, gtserror.NewErrorNotFound(err)
}
if emoji == nil {
err := gtserror.Newf("emoji %s not found in the db", emojiID)
return nil, gtserror.NewErrorNotFound(err)
}
// Only serve *our*
// emojis on this path.
if !emoji.IsLocal() {
err := gtserror.Newf("emoji %s doesn't belong to this instance (domain is %s)", emojiID, emoji.Domain)
return nil, gtserror.NewErrorNotFound(err)
}
// Don't serve emojis that have
// been disabled by an admin.
if *emoji.Disabled {
err := gtserror.Newf("emoji with id %s has been disabled by an admin", emojiID)
return nil, gtserror.NewErrorNotFound(err)
}
apEmoji, err := p.converter.EmojiToAS(ctx, emoji)
if err != nil {
err := gtserror.Newf("error converting emoji %s to ap: %s", emojiID, err)
return nil, gtserror.NewErrorInternalError(err)
}
data, err := ap.Serialize(apEmoji)
if err != nil {
err := gtserror.Newf("error serializing emoji %s: %w", emojiID, err)
return nil, gtserror.NewErrorInternalError(err)
}
return data, nil
}
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