bitwarden-browser/src/background/runtime.background.ts

import { CipherType } from 'jslib/enums';

import { UtilsService } from 'jslib/services/utils.service';

import {
    CipherService,
    PlatformUtilsService,
} from 'jslib/abstractions';

import { BrowserApi } from '../browser/browserApi';

import MainBackground from './main.background';

import { AutofillService } from '../services/abstractions/autofill.service';

export default class RuntimeBackground {
    private runtime: any;
    private autofillTimeout: number;
    private pageDetailsToAutoFill: any[] = [];
    private isSafari: boolean;

    constructor(private main: MainBackground, private autofillService: AutofillService,
        private cipherService: CipherService, private platformUtilsService: PlatformUtilsService) {
        this.isSafari = this.platformUtilsService.isSafari();
        this.runtime = this.isSafari ? safari.application : chrome.runtime;
    }

    async init() {
        if (!this.runtime) {
            return;
        }

        if (this.isSafari) {
            // Reload the popup when it's opened
            this.runtime.addEventListener('popover', (event: any) => {
                const win: Window = event.target.contentWindow;
                const href = win.location.origin + win.location.pathname;
                if (win.location.toString() === href) {
                    win.location.reload();
                } else {
                    win.location.href = href;
                }
            }, true);

            this.runtime.addEventListener('message', async (msgEvent: any) => {
                await this.processMessage(msgEvent.message, {
                    tab: {
                        id: null, // TODO
                    },
                    frameId: null,
                }, () => { /* No responses in Safari */ });
            }, false);

            return;
        }

        if (this.runtime.onInstalled) {
            this.runtime.onInstalled.addListener((details: any) => {
                (window as any).ga('send', {
                    hitType: 'event',
                    eventAction: 'onInstalled ' + details.reason,
                });

                if (details.reason === 'install') {
                    chrome.tabs.create({ url: 'https://bitwarden.com/browser-start/' });
                }
            });
        }

        this.runtime.onMessage.addListener(async (msg: any, sender: any, sendResponse: any) => {
            await this.processMessage(msg, sender, sendResponse);
        });
    }

    private async processMessage(msg: any, sender: any, sendResponse: any) {
        switch (msg.command) {
            case 'loggedIn':
            case 'unlocked':
            case 'locked':
                await this.main.setIcon();
                await this.main.refreshBadgeAndMenu();
                break;
            case 'logout':
                await this.main.logout(msg.expired);
                break;
            case 'syncCompleted':
                if (msg.successfully) {
                    setTimeout(async () => await this.main.refreshBadgeAndMenu(), 2000);
                }
                break;
            case 'bgOpenNotificationBar':
                await BrowserApi.tabSendMessageData(sender.tab, 'openNotificationBar', msg.data);
                break;
            case 'bgCloseNotificationBar':
                await BrowserApi.tabSendMessageData(sender.tab, 'closeNotificationBar');
                break;
            case 'bgAdjustNotificationBar':
                await BrowserApi.tabSendMessageData(sender.tab, 'adjustNotificationBar', msg.data);
                break;
            case 'bgCollectPageDetails':
                this.main.collectPageDetailsForContentScript(sender.tab, msg.sender, sender.frameId);
                break;
            case 'bgAddLogin':
                await this.addLogin(msg.login, sender.tab);
                break;
            case 'bgAddClose':
                this.removeAddLogin(sender.tab);
                break;
            case 'bgAddSave':
                await this.saveAddLogin(sender.tab);
                break;
            case 'bgNeverSave':
                await this.saveNever(sender.tab);
                break;
            case 'bgUpdateContextMenu':
                await this.main.refreshBadgeAndMenu();
                break;
            case 'collectPageDetailsResponse':
                switch (msg.sender) {
                    case 'notificationBar':
                        const forms = this.autofillService.getFormsWithPasswordFields(msg.details);
                        await BrowserApi.tabSendMessageData(msg.tab, 'notificationBarPageDetails', {
                            details: msg.details,
                            forms: forms,
                        });
                        break;
                    case 'autofiller':
                    case 'autofill_cmd':
                        await this.autofillService.doAutoFillForLastUsedLogin([{
                            frameId: sender.frameId,
                            tab: msg.tab,
                            details: msg.details,
                        }], msg.sender === 'autofill_cmd');
                        break;
                    case 'contextMenu':
                        clearTimeout(this.autofillTimeout);
                        this.pageDetailsToAutoFill.push({
                            frameId: sender.frameId,
                            tab: msg.tab,
                            details: msg.details,
                        });
                        this.autofillTimeout = setTimeout(async () => await this.autofillPage(), 300);
                        break;
                    default:
                        break;
                }
                break;
            default:
                break;
        }
    }

    private async autofillPage() {
        await this.autofillService.doAutoFill({
            cipher: this.main.loginToAutoFill,
            pageDetails: this.pageDetailsToAutoFill,
            fromBackground: true,
        });

        // reset
        this.main.loginToAutoFill = null;
        this.pageDetailsToAutoFill = [];
    }

    private async saveAddLogin(tab: any) {
        for (let i = this.main.loginsToAdd.length - 1; i >= 0; i--) {
            if (this.main.loginsToAdd[i].tabId !== tab.id) {
                continue;
            }

            const loginInfo = this.main.loginsToAdd[i];
            const tabDomain = this.platformUtilsService.getDomain(tab.url);
            if (tabDomain != null && tabDomain !== loginInfo.domain) {
                continue;
            }

            this.main.loginsToAdd.splice(i, 1);

            const cipher = await this.cipherService.encrypt({
                id: null,
                folderId: null,
                favorite: false,
                name: loginInfo.name,
                notes: null,
                type: CipherType.Login,
                login: {
                    uri: loginInfo.uri,
                    username: loginInfo.username,
                    password: loginInfo.password,
                },
            });

            await this.cipherService.saveWithServer(cipher);
            (window as any).ga('send', {
                hitType: 'event',
                eventAction: 'Added Login from Notification Bar',
            });

            BrowserApi.tabSendMessageData(tab, 'closeNotificationBar');
        }
    }

    private async saveNever(tab: any) {
        for (let i = this.main.loginsToAdd.length - 1; i >= 0; i--) {
            if (this.main.loginsToAdd[i].tabId !== tab.id) {
                continue;
            }

            const loginInfo = this.main.loginsToAdd[i];
            const tabDomain = this.platformUtilsService.getDomain(tab.url);
            if (tabDomain != null && tabDomain !== loginInfo.domain) {
                continue;
            }

            this.main.loginsToAdd.splice(i, 1);
            const hostname = UtilsService.getHostname(tab.url);
            await this.cipherService.saveNeverDomain(hostname);
            BrowserApi.tabSendMessageData(tab, 'closeNotificationBar');
        }
    }

    private async addLogin(loginInfo: any, tab: any) {
        const loginDomain = this.platformUtilsService.getDomain(loginInfo.url);
        if (loginDomain == null) {
            return;
        }

        const ciphers = await this.cipherService.getAllDecryptedForDomain(loginDomain);

        let match = false;
        for (let i = 0; i < ciphers.length; i++) {
            if (ciphers[i].login.username === loginInfo.username) {
                match = true;
                break;
            }
        }

        if (!match) {
            // remove any old logins for this tab
            this.removeAddLogin(tab);

            this.main.loginsToAdd.push({
                username: loginInfo.username,
                password: loginInfo.password,
                name: loginDomain,
                domain: loginDomain,
                uri: loginInfo.url,
                tabId: tab.id,
                expires: new Date((new Date()).getTime() + 30 * 60000), // 30 minutes
            });

            await this.main.checkLoginsToAdd(tab);
        }
    }

    private removeAddLogin(tab: any) {
        for (let i = this.main.loginsToAdd.length - 1; i >= 0; i--) {
            if (this.main.loginsToAdd[i].tabId === tab.id) {
                this.main.loginsToAdd.splice(i, 1);
            }
        }
    }

    private async currenttabSendMessageData(command: string, data: any = null) {
        const tab = await BrowserApi.getTabFromCurrentWindow();
        if (tab == null) {
            return;
        }

        await BrowserApi.tabSendMessageData(tab, command, data);
    }
}