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joplin/packages/lib/models/utils/readOnly.ts

77 lines
3.4 KiB
TypeScript

import { ModelType } from '../../BaseModel';
import { ErrorCode } from '../../errors';
import JoplinError from '../../JoplinError';
import { State as ShareState } from '../../services/share/reducer';
import ItemChange from '../ItemChange';
import Setting from '../Setting';
export interface ItemSlice {
id?: string;
share_id: string;
}
// This function can be called to wrap any read-only-related code. It should be
// fast and allows an early exit for cases that don't apply, for example if not
// synchronising with Joplin Cloud or if not sharing any notebook.
export const needsReadOnlyChecks = (itemType: ModelType, changeSource: number, shareState: ShareState, disableReadOnlyCheck = false) => {
if (disableReadOnlyCheck) return false;
if (Setting.value('sync.target') !== 10) return false;
if (changeSource === ItemChange.SOURCE_SYNC) return false;
if (!Setting.value('sync.userId')) return false;
if (![ModelType.Note, ModelType.Folder, ModelType.Resource].includes(itemType)) return false;
if (!shareState) throw new Error('Share state must be provided');
if (!shareState.shareInvitations.length) return false;
return true;
};
export const checkIfItemsCanBeChanged = (itemType: ModelType, changeSource: number, items: ItemSlice[], shareState: ShareState) => {
for (const item of items) {
checkIfItemCanBeChanged(itemType, changeSource, item, shareState);
}
};
export const checkIfItemCanBeChanged = (itemType: ModelType, changeSource: number, item: ItemSlice, shareState: ShareState) => {
if (!needsReadOnlyChecks(itemType, changeSource, shareState)) return;
if (!item) return;
if (itemIsReadOnlySync(itemType, changeSource, item, Setting.value('sync.userId'), shareState)) {
throw new JoplinError(`Cannot change or delete a read-only item: ${item.id}`, ErrorCode.IsReadOnly);
}
};
export const checkIfItemCanBeAddedToFolder = async (itemType: ModelType, Folder: any, changeSource: number, shareState: ShareState, parentId: string) => {
if (needsReadOnlyChecks(itemType, changeSource, shareState) && parentId) {
const parentFolder = await Folder.load(parentId, { fields: ['id', 'share_id'] });
if (itemIsReadOnlySync(itemType, changeSource, parentFolder, Setting.value('sync.userId'), shareState)) {
throw new JoplinError('Cannot add an item as a child of a read-only item', ErrorCode.IsReadOnly);
}
}
};
export const itemIsReadOnlySync = (itemType: ModelType, changeSource: number, item: ItemSlice, userId: string, shareState: ShareState): boolean => {
if (!needsReadOnlyChecks(itemType, changeSource, shareState)) return false;
if (!('share_id' in item)) throw new Error('share_id property is missing');
// Item is not shared
if (!item.share_id) return false;
// Item belongs to the user
if (shareState.shares.find(s => s.user.id === userId)) return false;
const shareUser = shareState.shareInvitations.find(si => si.share.id === item.share_id);
// Shouldn't happen
if (!shareUser) return false;
return !shareUser.can_write;
};
export const itemIsReadOnly = async (BaseItem: any, itemType: ModelType, changeSource: number, itemId: string, userId: string, shareState: ShareState): Promise<boolean> => {
if (!needsReadOnlyChecks(itemType, changeSource, shareState)) return false;
const item: ItemSlice = await BaseItem.loadItem(itemType, itemId, { fields: ['id', 'share_id'] });
if (!item) throw new JoplinError(`No such item: ${itemType}: ${itemId}`, ErrorCode.NotFound);
return itemIsReadOnlySync(itemType, changeSource, item, userId, shareState);
};