misskey/src/remote/activitypub/kernel/follow.ts

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import User, { IRemoteUser } from '../../../models/user';
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import config from '../../../config';
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import follow from '../../../services/following/create';
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import { IFollow } from '../type';
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export default async (actor: IRemoteUser, activity: IFollow): Promise<void> => {
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const id = typeof activity.object == 'string' ? activity.object : activity.object.id;
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if (!id.startsWith(config.url + '/')) {
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return null;
}
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const followee = await User.findOne({ _id: id.split('/').pop() });
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if (followee === null) {
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throw new Error('followee not found');
}
if (followee.host != null) {
throw new Error('フォローしようとしているユーザーはローカルユーザーではありません');
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}
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await follow(actor, followee, activity);
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};