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joplin/packages/lib/services/share/ShareService.ts
2023-08-05 16:40:05 +01:00

527 lines
17 KiB
TypeScript

import { Store } from 'redux';
import JoplinServerApi from '../../JoplinServerApi';
import { _ } from '../../locale';
import Logger from '@joplin/utils/Logger';
import Folder from '../../models/Folder';
import MasterKey from '../../models/MasterKey';
import Note from '../../models/Note';
import Setting from '../../models/Setting';
import { FolderEntity } from '../database/types';
import EncryptionService from '../e2ee/EncryptionService';
import { PublicPrivateKeyPair, mkReencryptFromPasswordToPublicKey, mkReencryptFromPublicKeyToPassword } from '../e2ee/ppk';
import { MasterKeyEntity } from '../e2ee/types';
import { getMasterPassword } from '../e2ee/utils';
import ResourceService from '../ResourceService';
import { addMasterKey, getEncryptionEnabled, localSyncInfo } from '../synchronizer/syncInfoUtils';
import { ShareInvitation, SharePermissions, State, stateRootKey, StateShare } from './reducer';
const logger = Logger.create('ShareService');
export interface ApiShare {
id: string;
master_key_id: string;
}
function formatShareInvitations(invitations: any[]): ShareInvitation[] {
return invitations.map(inv => {
return {
...inv,
master_key: inv.master_key ? JSON.parse(inv.master_key) : null,
};
});
}
export default class ShareService {
private static instance_: ShareService;
private api_: JoplinServerApi = null;
private store_: Store<any> = null;
private encryptionService_: EncryptionService = null;
private initialized_ = false;
public static instance(): ShareService {
if (this.instance_) return this.instance_;
this.instance_ = new ShareService();
return this.instance_;
}
public initialize(store: Store<any>, encryptionService: EncryptionService, api: JoplinServerApi = null) {
this.initialized_ = true;
this.store_ = store;
this.encryptionService_ = encryptionService;
this.api_ = api;
}
public get enabled(): boolean {
if (!this.initialized_) return false;
return [9, 10].includes(Setting.value('sync.target')); // Joplin Server, Joplin Cloud targets
}
private get store(): Store<any> {
return this.store_;
}
public get state(): State {
return this.store.getState()[stateRootKey] as State;
}
public get userId(): string {
return this.api() ? this.api().userId : '';
}
private api(): JoplinServerApi {
if (this.api_) return this.api_;
const syncTargetId = Setting.value('sync.target');
this.api_ = new JoplinServerApi({
baseUrl: () => Setting.value(`sync.${syncTargetId}.path`),
userContentBaseUrl: () => Setting.value(`sync.${syncTargetId}.userContentPath`),
username: () => Setting.value(`sync.${syncTargetId}.username`),
password: () => Setting.value(`sync.${syncTargetId}.password`),
});
return this.api_;
}
public async shareFolder(folderId: string): Promise<ApiShare> {
const folder = await Folder.load(folderId);
if (!folder) throw new Error(`No such folder: ${folderId}`);
let folderMasterKey: MasterKeyEntity = null;
if (getEncryptionEnabled()) {
const syncInfo = localSyncInfo();
// Shouldn't happen
if (!syncInfo.ppk) throw new Error('Cannot share notebook because E2EE is enabled and no Public Private Key pair exists.');
// TODO: handle "undefinedMasterPassword" error - show master password dialog
folderMasterKey = await this.encryptionService_.generateMasterKey(getMasterPassword());
folderMasterKey = await MasterKey.save(folderMasterKey);
addMasterKey(syncInfo, folderMasterKey);
}
const newFolderProps: FolderEntity = {};
if (folder.parent_id) newFolderProps.parent_id = '';
if (folderMasterKey) newFolderProps.master_key_id = folderMasterKey.id;
if (Object.keys(newFolderProps).length) {
await Folder.save({
id: folder.id,
...newFolderProps,
});
}
const share = await this.api().exec('POST', 'api/shares', {}, {
folder_id: folderId,
master_key_id: folderMasterKey ? folderMasterKey.id : '',
});
// Note: race condition if the share is created but the app crashes
// before setting share_id on the folder. See unshareFolder() for info.
await Folder.save({ id: folder.id, share_id: share.id });
await Folder.updateAllShareIds(ResourceService.instance());
return share;
}
// This allows the notebook owner to stop sharing it. For a recipient to
// leave the shared notebook, see the leaveSharedFolder command.
public async unshareFolder(folderId: string) {
const folder = await Folder.load(folderId);
if (!folder) throw new Error(`No such folder: ${folderId}`);
const share = this.shares.find(s => s.folder_id === folderId);
if (!share) throw new Error(`No share for folder: ${folderId}`);
// First, delete the share - which in turns is going to remove the items
// for all users, except the owner.
await this.deleteShare(share.id);
// Then reset the "share_id" field for the folder and all sub-items.
// This could potentially be done server-side, when deleting the share,
// but since clients are normally responsible for maintaining the
// share_id property, we do it here for consistency. It will also avoid
// conflicts because changes will come only from the clients.
//
// Note that there could be a race condition here if the share is
// deleted, but the app crashes just before setting share_id to "". It's
// very unlikely to happen so we leave like this for now.
//
// We could potentially have a clean up process at some point:
//
// - It would download all share objects
// - Then look for all items where the share_id is not in any of these
// shares objects
// - And set those to ""
//
// Likewise, it could apply the share_id to folders based on
// share.folder_id
//
// Setting the share_id is not critical - what matters is that when the
// share is deleted, other users no longer have access to the item, so
// can't change or read them.
await Folder.save({ id: folder.id, share_id: '' });
// It's ok if updateAllShareIds() doesn't run because it's executed on
// each sync too.
await Folder.updateAllShareIds(ResourceService.instance());
}
// This is when a share recipient decides to leave the shared folder.
//
// In that case we delete the root folder. Deleting the folder tells the
// server that we want to leave the share.
//
// We also immediately delete the children, but we do not sync the changes
// otherwise it would delete the items for other users too.
//
// If we do not delete them now it would also cause all kind of issues with
// read-only shares, because the read-only status will be lost after the
// deletion of the root folder, which means various services may modify the
// data. The changes will then be rejected by the sync target and cause
// conflicts.
//
// We do not need to sync the children deletion, because the server will
// take care of deleting all associated user_items. So eventually all the
// notebook content will also be deleted for the current user.
//
// If `folderShareUserId` is provided, the function will check that the user
// does not own the share. It would be an error to leave such a folder
// (instead "unshareFolder" should be called).
public async leaveSharedFolder(folderId: string, folderShareUserId: string = null): Promise<void> {
if (folderShareUserId !== null) {
const userId = Setting.value('sync.userId');
if (folderShareUserId === userId) throw new Error('Cannot leave own notebook');
}
const folder = await Folder.load(folderId);
// We call this to make sure all items are correctly linked before we
// call deleteAllByShareId()
await Folder.updateAllShareIds(ResourceService.instance());
await Folder.delete(folderId, { deleteChildren: false, disableReadOnlyCheck: true });
await Folder.deleteAllByShareId(folder.share_id, { disableReadOnlyCheck: true, trackDeleted: false });
}
// Finds any folder that is associated with a share, but the user no longer
// has access to the share, and remove these folders. This check is
// necessary otherwise sync will try to update items that are not longer
// accessible and will throw the error "Could not find share with ID: xxxx")
public async checkShareConsistency() {
const rootSharedFolders = await Folder.rootSharedFolders();
let hasRefreshedShares = false;
let shares = this.shares;
for (const folder of rootSharedFolders) {
let share = shares.find(s => s.id === folder.share_id);
if (!share && !hasRefreshedShares) {
shares = await this.refreshShares();
share = shares.find(s => s.id === folder.share_id);
hasRefreshedShares = true;
}
if (!share) {
// This folder is a associated with a share, but the user no
// longer has access to this share. It can happen for two
// reasons:
//
// - It no longer exists
// - Or the user rejected that share from a different device,
// and the folder was not deleted as it should have been.
//
// In that case we need to leave the notebook.
logger.warn(`Found a folder that was associated with a share, but the user not longer has access to the share - leaving the folder. Folder: ${folder.title} (${folder.id}). Share: ${folder.share_id}`);
await this.leaveSharedFolder(folder.id);
}
}
}
public async shareNote(noteId: string, recursive: boolean): Promise<StateShare> {
const note = await Note.load(noteId);
if (!note) throw new Error(`No such note: ${noteId}`);
const share = await this.api().exec('POST', 'api/shares', {}, {
note_id: noteId,
recursive: recursive ? 1 : 0,
});
await Note.save({
id: note.id,
parent_id: note.parent_id,
is_shared: 1,
updated_time: Date.now(),
}, {
autoTimestamp: false,
});
return share;
}
public async unshareNote(noteId: string) {
const note = await Note.load(noteId);
if (!note) throw new Error(`No such note: ${noteId}`);
const shares = await this.refreshShares();
const noteShares = shares.filter(s => s.note_id === noteId);
const promises: Promise<void>[] = [];
for (const share of noteShares) {
promises.push(this.deleteShare(share.id));
}
await Promise.all(promises);
await Note.save({
id: note.id,
parent_id: note.parent_id,
is_shared: 0,
updated_time: Date.now(),
}, {
autoTimestamp: false,
});
}
public shareUrl(userId: string, share: StateShare): string {
return `${this.api().personalizedUserContentBaseUrl(userId)}/shares/${share.id}`;
}
public folderShare(folderId: string): StateShare {
return this.shares.find(s => s.folder_id === folderId);
}
public isSharedFolderOwner(folderId: string, userId: string = null): boolean {
if (userId === null) userId = this.userId;
const share = this.folderShare(folderId);
if (!share) throw new Error(`Cannot find share associated with folder: ${folderId}`);
return share.user.id === userId;
}
public get shares() {
return this.state.shares;
}
public get shareLinkNoteIds(): string[] {
return this.shares.filter(s => !!s.note_id).map(s => s.note_id);
}
public get shareInvitations() {
return this.state.shareInvitations;
}
private async userPublicKey(userEmail: string): Promise<PublicPrivateKeyPair> {
return this.api().exec('GET', `api/users/${encodeURIComponent(userEmail)}/public_key`);
}
public async addShareRecipient(shareId: string, masterKeyId: string, recipientEmail: string, permissions: SharePermissions) {
let recipientMasterKey: MasterKeyEntity = null;
if (getEncryptionEnabled()) {
const syncInfo = localSyncInfo();
const masterKey = syncInfo.masterKeys.find(m => m.id === masterKeyId);
if (!masterKey) throw new Error(`Cannot find master key with ID "${masterKeyId}"`);
const recipientPublicKey: PublicPrivateKeyPair = await this.userPublicKey(recipientEmail);
if (!recipientPublicKey) throw new Error(_('Cannot share encrypted notebook with recipient %s because they have not enabled end-to-end encryption. They may do so from the screen Configuration > Encryption.', recipientEmail));
logger.info('Reencrypting master key with recipient public key', recipientPublicKey);
recipientMasterKey = await mkReencryptFromPasswordToPublicKey(
this.encryptionService_,
masterKey,
getMasterPassword(),
recipientPublicKey
);
}
return this.api().exec('POST', `api/shares/${shareId}/users`, {}, {
email: recipientEmail,
master_key: JSON.stringify(recipientMasterKey),
...permissions,
});
}
public async deleteShareRecipient(shareUserId: string) {
await this.api().exec('DELETE', `api/share_users/${shareUserId}`);
}
public async deleteShare(shareId: string) {
await this.api().exec('DELETE', `api/shares/${shareId}`);
}
private async loadShares() {
return this.api().exec('GET', 'api/shares');
}
private async loadShareUsers(shareId: string) {
return this.api().exec('GET', `api/shares/${shareId}/users`);
}
private async loadShareInvitations() {
return this.api().exec('GET', 'api/share_users');
}
public setProcessingShareInvitationResponse(v: boolean) {
this.store.dispatch({
type: 'SHARE_INVITATION_RESPONSE_PROCESSING',
value: v,
});
}
public async setPermissions(shareId: string, shareUserId: string, permissions: SharePermissions) {
logger.info('setPermissions: ', shareUserId, permissions);
await this.api().exec('PATCH', `api/share_users/${shareUserId}`, null, {
can_read: 1,
can_write: permissions.can_write,
});
this.store.dispatch({
type: 'SHARE_USER_UPDATE_ONE',
shareId: shareId,
shareUser: {
id: shareUserId,
...permissions,
},
});
}
public async respondInvitation(shareUserId: string, masterKey: MasterKeyEntity, accept: boolean) {
logger.info('respondInvitation: ', shareUserId, accept);
if (accept) {
if (masterKey) {
const reencryptedMasterKey = await mkReencryptFromPublicKeyToPassword(
this.encryptionService_,
masterKey,
localSyncInfo().ppk,
getMasterPassword(),
getMasterPassword()
);
logger.info('respondInvitation: Key has been reencrypted using master password', reencryptedMasterKey);
await MasterKey.save(reencryptedMasterKey);
}
await this.api().exec('PATCH', `api/share_users/${shareUserId}`, null, { status: 1 });
} else {
await this.api().exec('PATCH', `api/share_users/${shareUserId}`, null, { status: 2 });
}
}
public async refreshShareInvitations() {
const result = await this.loadShareInvitations();
const invitations = formatShareInvitations(result.items);
logger.info('Refresh share invitations:', invitations);
this.store.dispatch({
type: 'SHARE_INVITATION_SET',
shareInvitations: invitations,
});
}
public async shareById(id: string) {
const stateShare = this.state.shares.find(s => s.id === id);
if (stateShare) return stateShare;
const refreshedShares = await this.refreshShares();
const refreshedShare = refreshedShares.find(s => s.id === id);
if (!refreshedShare) throw new Error(`Could not find share with ID: ${id}`);
return refreshedShare;
}
// In most cases the share objects will already be part of the state, so
// this function checks there first. If the required share objects are not
// present, it refreshes them from the API.
public async sharesByIds(ids: string[]) {
const buildOutput = async (shares: StateShare[]) => {
const output: Record<string, StateShare> = {};
for (const share of shares) {
if (ids.includes(share.id)) output[share.id] = share;
}
return output;
};
let output = await buildOutput(this.state.shares);
if (Object.keys(output).length === ids.length) return output;
const refreshedShares = await this.refreshShares();
output = await buildOutput(refreshedShares);
if (Object.keys(output).length !== ids.length) {
logger.error('sharesByIds: Need:', ids);
logger.error('sharesByIds: Got:', Object.keys(refreshedShares));
throw new Error('Could not retrieve required share objects');
}
return output;
}
public async refreshShares(): Promise<StateShare[]> {
const result = await this.loadShares();
logger.info('Refreshed shares:', result);
this.store.dispatch({
type: 'SHARE_SET',
shares: result.items,
});
return result.items;
}
public async refreshShareUsers(shareId: string) {
const result = await this.loadShareUsers(shareId);
logger.info('Refreshed share users:', result);
this.store.dispatch({
type: 'SHARE_USER_SET',
shareId: shareId,
shareUsers: result.items,
});
}
private async updateNoLongerSharedItems() {
const shareIds = this.shares.map(share => share.id).concat(this.shareInvitations.map(si => si.share.id));
await Folder.updateNoLongerSharedItems(shareIds);
}
public async maintenance() {
if (this.enabled) {
let hasError = false;
try {
await this.refreshShareInvitations();
} catch (error) {
hasError = true;
logger.error('Maintenance: Failed to update share invitations:', error);
}
try {
await this.refreshShares();
} catch (error) {
hasError = true;
logger.error('Maintenance: Failed to refresh shares:', error);
}
Setting.setValue('sync.userId', this.api().userId);
// If there was no errors, it means we have all the share objects,
// so we can run the clean up function.
if (!hasError) await this.updateNoLongerSharedItems();
}
}
}