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Diffstat (limited to 'browser/modules/SiteDataManager.jsm')
| -rw-r--r-- | browser/modules/SiteDataManager.jsm | 664 |
1 files changed, 664 insertions, 0 deletions
diff --git a/browser/modules/SiteDataManager.jsm b/browser/modules/SiteDataManager.jsm new file mode 100644 index 0000000000..6853baa788 --- /dev/null +++ b/browser/modules/SiteDataManager.jsm @@ -0,0 +1,664 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this file, + * You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +const { XPCOMUtils } = ChromeUtils.importESModule( + "resource://gre/modules/XPCOMUtils.sys.mjs" +); + +var EXPORTED_SYMBOLS = ["SiteDataManager"]; + +const lazy = {}; + +XPCOMUtils.defineLazyGetter(lazy, "gStringBundle", function() { + return Services.strings.createBundle( + "chrome://browser/locale/siteData.properties" + ); +}); + +XPCOMUtils.defineLazyGetter(lazy, "gBrandBundle", function() { + return Services.strings.createBundle( + "chrome://branding/locale/brand.properties" + ); +}); + +var SiteDataManager = { + // A Map of sites and their disk usage according to Quota Manager. + // Key is base domain (group sites based on base domain across scheme, port, + // origin attributes) or host if the entry does not have a base domain. + // Value is one object holding: + // - baseDomainOrHost: Same as key. + // - principals: instances of nsIPrincipal (only when the site has + // quota storage). + // - persisted: the persistent-storage status. + // - quotaUsage: the usage of indexedDB and localStorage. + // - containersData: a map containing cookiesBlocked,lastAccessed and quotaUsage by userContextID. + _sites: new Map(), + + _getCacheSizeObserver: null, + + _getCacheSizePromise: null, + + _getQuotaUsagePromise: null, + + _quotaUsageRequest: null, + + /** + * Retrieve the latest site data and store it in SiteDataManager. + * + * Updating site data is a *very* expensive operation. This method exists so that + * consumers can manually decide when to update, most methods on SiteDataManager + * will not trigger updates automatically. + * + * It is *highly discouraged* to await on this function to finish before showing UI. + * Either trigger the update some time before the data is needed or use the + * entryUpdatedCallback parameter to update the UI async. + * + * @param {entryUpdatedCallback} a function to be called whenever a site is added or + * updated. This can be used to e.g. fill a UI that lists sites without + * blocking on the entire update to finish. + * @returns a Promise that resolves when updating is done. + **/ + async updateSites(entryUpdatedCallback) { + Services.obs.notifyObservers(null, "sitedatamanager:updating-sites"); + // Clear old data and requests first + this._sites.clear(); + this._getAllCookies(entryUpdatedCallback); + await this._getQuotaUsage(entryUpdatedCallback); + Services.obs.notifyObservers(null, "sitedatamanager:sites-updated"); + }, + + /** + * Get the base domain of a host on a best-effort basis. + * @param {string} host - Host to convert. + * @returns {string} Computed base domain. If the base domain cannot be + * determined, because the host is an IP address or does not have enough + * domain levels we will return the original host. This includes the empty + * string. + * @throws {Error} Throws for unexpected conversion errors from eTLD service. + */ + getBaseDomainFromHost(host) { + let result = host; + try { + result = Services.eTLD.getBaseDomainFromHost(host); + } catch (e) { + if ( + e.result == Cr.NS_ERROR_HOST_IS_IP_ADDRESS || + e.result == Cr.NS_ERROR_INSUFFICIENT_DOMAIN_LEVELS + ) { + // For these 2 expected errors, just take the host as the result. + // - NS_ERROR_HOST_IS_IP_ADDRESS: the host is in ipv4/ipv6. + // - NS_ERROR_INSUFFICIENT_DOMAIN_LEVELS: not enough domain parts to extract. + result = host; + } else { + throw e; + } + } + return result; + }, + + _getOrInsertSite(baseDomainOrHost) { + let site = this._sites.get(baseDomainOrHost); + if (!site) { + site = { + baseDomainOrHost, + cookies: [], + persisted: false, + quotaUsage: 0, + lastAccessed: 0, + principals: [], + }; + this._sites.set(baseDomainOrHost, site); + } + return site; + }, + + _getOrInsertContainersData(site, userContextId) { + if (!site.containersData) { + site.containersData = new Map(); + } + + let containerData = site.containersData.get(userContextId); + if (!containerData) { + containerData = { + cookiesBlocked: 0, + lastAccessed: new Date(0), + quotaUsage: 0, + }; + site.containersData.set(userContextId, containerData); + } + return containerData; + }, + + /** + * Retrieves the amount of space currently used by disk cache. + * + * You can use DownloadUtils.convertByteUnits to convert this to + * a user-understandable size/unit combination. + * + * @returns a Promise that resolves with the cache size on disk in bytes. + */ + getCacheSize() { + if (this._getCacheSizePromise) { + return this._getCacheSizePromise; + } + + this._getCacheSizePromise = new Promise((resolve, reject) => { + // Needs to root the observer since cache service keeps only a weak reference. + this._getCacheSizeObserver = { + onNetworkCacheDiskConsumption: consumption => { + resolve(consumption); + this._getCacheSizePromise = null; + this._getCacheSizeObserver = null; + }, + + QueryInterface: ChromeUtils.generateQI([ + "nsICacheStorageConsumptionObserver", + "nsISupportsWeakReference", + ]), + }; + + try { + Services.cache2.asyncGetDiskConsumption(this._getCacheSizeObserver); + } catch (e) { + reject(e); + this._getCacheSizePromise = null; + this._getCacheSizeObserver = null; + } + }); + + return this._getCacheSizePromise; + }, + + _getQuotaUsage(entryUpdatedCallback) { + this._cancelGetQuotaUsage(); + this._getQuotaUsagePromise = new Promise(resolve => { + let onUsageResult = request => { + if (request.resultCode == Cr.NS_OK) { + let items = request.result; + for (let item of items) { + if (!item.persisted && item.usage <= 0) { + // An non-persistent-storage site with 0 byte quota usage is redundant for us so skip it. + continue; + } + let principal = Services.scriptSecurityManager.createContentPrincipalFromOrigin( + item.origin + ); + if (principal.schemeIs("http") || principal.schemeIs("https")) { + // Group dom storage by first party. If an entry is partitioned + // the first party site will be in the partitionKey, instead of + // the principal baseDomain. + let pkBaseDomain; + try { + pkBaseDomain = ChromeUtils.getBaseDomainFromPartitionKey( + principal.originAttributes.partitionKey + ); + } catch (e) { + console.error(e); + } + let site = this._getOrInsertSite( + pkBaseDomain || principal.baseDomain + ); + // Assume 3 sites: + // - Site A (not persisted): https://www.foo.com + // - Site B (not persisted): https://www.foo.com^userContextId=2 + // - Site C (persisted): https://www.foo.com:1234 + // Although only C is persisted, grouping by base domain, as a + // result, we still mark as persisted here under this base + // domain group. + if (item.persisted) { + site.persisted = true; + } + if (site.lastAccessed < item.lastAccessed) { + site.lastAccessed = item.lastAccessed; + } + if (Number.isInteger(principal.userContextId)) { + let containerData = this._getOrInsertContainersData( + site, + principal.userContextId + ); + containerData.quotaUsage = item.usage; + let itemTime = item.lastAccessed / 1000; + if (containerData.lastAccessed.getTime() < itemTime) { + containerData.lastAccessed.setTime(itemTime); + } + } + site.principals.push(principal); + site.quotaUsage += item.usage; + if (entryUpdatedCallback) { + entryUpdatedCallback(principal.baseDomain, site); + } + } + } + } + resolve(); + }; + // XXX: The work of integrating localStorage into Quota Manager is in progress. + // After the bug 742822 and 1286798 landed, localStorage usage will be included. + // So currently only get indexedDB usage. + this._quotaUsageRequest = Services.qms.getUsage(onUsageResult); + }); + return this._getQuotaUsagePromise; + }, + + _getAllCookies(entryUpdatedCallback) { + for (let cookie of Services.cookies.cookies) { + // Group cookies by first party. If a cookie is partitioned the + // partitionKey will contain the first party site, instead of the host + // field. + let pkBaseDomain; + try { + pkBaseDomain = ChromeUtils.getBaseDomainFromPartitionKey( + cookie.originAttributes.partitionKey + ); + } catch (e) { + console.error(e); + } + let baseDomainOrHost = + pkBaseDomain || this.getBaseDomainFromHost(cookie.rawHost); + let site = this._getOrInsertSite(baseDomainOrHost); + if (entryUpdatedCallback) { + entryUpdatedCallback(baseDomainOrHost, site); + } + site.cookies.push(cookie); + if (Number.isInteger(cookie.originAttributes.userContextId)) { + let containerData = this._getOrInsertContainersData( + site, + cookie.originAttributes.userContextId + ); + containerData.cookiesBlocked += 1; + let cookieTime = cookie.lastAccessed / 1000; + if (containerData.lastAccessed.getTime() < cookieTime) { + containerData.lastAccessed.setTime(cookieTime); + } + } + if (site.lastAccessed < cookie.lastAccessed) { + site.lastAccessed = cookie.lastAccessed; + } + } + }, + + _cancelGetQuotaUsage() { + if (this._quotaUsageRequest) { + this._quotaUsageRequest.cancel(); + this._quotaUsageRequest = null; + } + }, + + /** + * Checks if the site with the provided ASCII host is using any site data at all. + * This will check for: + * - Cookies (incl. subdomains) + * - Quota Usage + * in that order. This function is meant to be fast, and thus will + * end searching and return true once the first trace of site data is found. + * + * @param {String} the ASCII host to check + * @returns {Boolean} whether the site has any data associated with it + */ + async hasSiteData(asciiHost) { + if (Services.cookies.countCookiesFromHost(asciiHost)) { + return true; + } + + let hasQuota = await new Promise(resolve => { + Services.qms.getUsage(request => { + if (request.resultCode != Cr.NS_OK) { + resolve(false); + return; + } + + for (let item of request.result) { + if (!item.persisted && item.usage <= 0) { + continue; + } + + let principal = Services.scriptSecurityManager.createContentPrincipalFromOrigin( + item.origin + ); + if (principal.asciiHost == asciiHost) { + resolve(true); + return; + } + } + + resolve(false); + }); + }); + + if (hasQuota) { + return true; + } + + return false; + }, + + getTotalUsage() { + return this._getQuotaUsagePromise.then(() => { + let usage = 0; + for (let site of this._sites.values()) { + usage += site.quotaUsage; + } + return usage; + }); + }, + + /** + * Gets all sites that are currently storing site data. Entries are grouped by + * parent base domain if applicable. For example "foo.example.com", + * "example.com" and "bar.example.com" will have one entry with the baseDomain + * "example.com". + * A base domain entry will represent all data of its storage jar. The storage + * jar holds all first party data of the domain as well as any third party + * data partitioned under the domain. Additionally we will add data which + * belongs to the domain but is part of other domains storage jars . That is + * data third-party partitioned under other domains. + * Sites which cannot be associated with a base domain, for example IP hosts, + * are not grouped. + * + * The list is not automatically up-to-date. You need to call + * {@link updateSites} before you can use this method for the first time (and + * whenever you want to get an updated set of list.) + * + * @returns {Promise} Promise that resolves with the list of all sites. + */ + async getSites() { + await this._getQuotaUsagePromise; + + return Array.from(this._sites.values()).map(site => ({ + baseDomain: site.baseDomainOrHost, + cookies: site.cookies, + usage: site.quotaUsage, + containersData: site.containersData, + persisted: site.persisted, + lastAccessed: new Date(site.lastAccessed / 1000), + })); + }, + + /** + * Get site, which stores data, by base domain or host. + * + * The list is not automatically up-to-date. You need to call + * {@link updateSites} before you can use this method for the first time (and + * whenever you want to get an updated set of list.) + * + * @param {String} baseDomainOrHost - Base domain or host of the site to get. + * + * @returns {Promise<Object|null>} Promise that resolves with the site object + * or null if no site with given base domain or host stores data. + */ + async getSite(baseDomainOrHost) { + let baseDomain = this.getBaseDomainFromHost(baseDomainOrHost); + + let site = this._sites.get(baseDomain); + if (!site) { + return null; + } + return { + baseDomain: site.baseDomainOrHost, + cookies: site.cookies, + usage: site.quotaUsage, + containersData: site.containersData, + persisted: site.persisted, + lastAccessed: new Date(site.lastAccessed / 1000), + }; + }, + + _removePermission(site) { + let removals = new Set(); + for (let principal of site.principals) { + let { originNoSuffix } = principal; + if (removals.has(originNoSuffix)) { + // In case of encountering + // - https://www.foo.com + // - https://www.foo.com^userContextId=2 + // because setting/removing permission is across OAs already so skip the same origin without suffix + continue; + } + removals.add(originNoSuffix); + Services.perms.removeFromPrincipal(principal, "persistent-storage"); + } + }, + + _removeQuotaUsage(site) { + let promises = []; + let removals = new Set(); + for (let principal of site.principals) { + let { originNoSuffix } = principal; + if (removals.has(originNoSuffix)) { + // In case of encountering + // - https://www.foo.com + // - https://www.foo.com^userContextId=2 + // below we have already removed across OAs so skip the same origin without suffix + continue; + } + removals.add(originNoSuffix); + promises.push( + new Promise(resolve => { + // We are clearing *All* across OAs so need to ensure a principal without suffix here, + // or the call of `clearStoragesForPrincipal` would fail. + principal = Services.scriptSecurityManager.createContentPrincipalFromOrigin( + originNoSuffix + ); + let request = this._qms.clearStoragesForPrincipal( + principal, + null, + null, + true + ); + request.callback = resolve; + }) + ); + } + return Promise.all(promises); + }, + + _removeCookies(site) { + for (let cookie of site.cookies) { + Services.cookies.remove( + cookie.host, + cookie.name, + cookie.path, + cookie.originAttributes + ); + } + site.cookies = []; + }, + + // Returns a list of permissions from the permission manager that + // we consider part of "site data and cookies". + _getDeletablePermissions() { + let perms = []; + + for (let permission of Services.perms.all) { + if ( + permission.type == "persistent-storage" || + permission.type == "storage-access" + ) { + perms.push(permission); + } + } + + return perms; + }, + + /** + * Removes all site data for the specified list of domains and hosts. + * This includes site data of subdomains belonging to the domains or hosts and + * partitioned storage. Data is cleared per storage jar, which means if we + * clear "example.com", we will also clear third parties embedded on + * "example.com". Additionally we will clear all data of "example.com" (as a + * third party) from other jars. + * + * @param {string|string[]} domainsOrHosts - List of domains and hosts or + * single domain or host to remove. + * @returns {Promise} Promise that resolves when data is removed and the site + * data manager has been updated. + */ + async remove(domainsOrHosts) { + if (domainsOrHosts == null) { + throw new Error("domainsOrHosts is required."); + } + // Allow the caller to pass a single base domain or host. + if (!Array.isArray(domainsOrHosts)) { + domainsOrHosts = [domainsOrHosts]; + } + let perms = this._getDeletablePermissions(); + let promises = []; + for (let domainOrHost of domainsOrHosts) { + const kFlags = + Ci.nsIClearDataService.CLEAR_COOKIES | + Ci.nsIClearDataService.CLEAR_DOM_STORAGES | + Ci.nsIClearDataService.CLEAR_EME | + Ci.nsIClearDataService.CLEAR_ALL_CACHES; + promises.push( + new Promise(function(resolve) { + const { clearData } = Services; + if (domainOrHost) { + // First try to clear by base domain for aDomainOrHost. If we can't + // get a base domain, fall back to clearing by just host. + try { + clearData.deleteDataFromBaseDomain( + domainOrHost, + true, + kFlags, + resolve + ); + } catch (e) { + if ( + e.result != Cr.NS_ERROR_HOST_IS_IP_ADDRESS && + e.result != Cr.NS_ERROR_INSUFFICIENT_DOMAIN_LEVELS + ) { + throw e; + } + clearData.deleteDataFromHost(domainOrHost, true, kFlags, resolve); + } + } else { + clearData.deleteDataFromLocalFiles(true, kFlags, resolve); + } + }) + ); + + for (let perm of perms) { + // Specialcase local file permissions. + if (!domainOrHost) { + if (perm.principal.schemeIs("file")) { + Services.perms.removePermission(perm); + } + } else if ( + Services.eTLD.hasRootDomain(perm.principal.host, domainOrHost) + ) { + Services.perms.removePermission(perm); + } + } + } + + await Promise.all(promises); + + return this.updateSites(); + }, + + /** + * In the specified window, shows a prompt for removing all site data or the + * specified list of base domains or hosts, warning the user that this may log + * them out of websites. + * + * @param {mozIDOMWindowProxy} win - a parent DOM window to host the dialog. + * @param {string[]} [removals] - an array of base domain or host strings that + * will be removed. + * @returns {boolean} whether the user confirmed the prompt. + */ + promptSiteDataRemoval(win, removals) { + if (removals) { + let args = { + hosts: removals, + allowed: false, + }; + let features = "centerscreen,chrome,modal,resizable=no"; + win.browsingContext.topChromeWindow.openDialog( + "chrome://browser/content/preferences/dialogs/siteDataRemoveSelected.xhtml", + "", + features, + args + ); + return args.allowed; + } + + let brandName = lazy.gBrandBundle.GetStringFromName("brandShortName"); + let flags = + Services.prompt.BUTTON_TITLE_IS_STRING * Services.prompt.BUTTON_POS_0 + + Services.prompt.BUTTON_TITLE_CANCEL * Services.prompt.BUTTON_POS_1 + + Services.prompt.BUTTON_POS_0_DEFAULT; + let title = lazy.gStringBundle.GetStringFromName( + "clearSiteDataPromptTitle" + ); + let text = lazy.gStringBundle.formatStringFromName( + "clearSiteDataPromptText", + [brandName] + ); + let btn0Label = lazy.gStringBundle.GetStringFromName("clearSiteDataNow"); + + let result = Services.prompt.confirmEx( + win, + title, + text, + flags, + btn0Label, + null, + null, + null, + {} + ); + return result == 0; + }, + + /** + * Clears all site data and cache + * + * @returns a Promise that resolves when the data is cleared. + */ + async removeAll() { + await this.removeCache(); + return this.removeSiteData(); + }, + + /** + * Clears all caches. + * + * @returns a Promise that resolves when the data is cleared. + */ + removeCache() { + return new Promise(function(resolve) { + Services.clearData.deleteData( + Ci.nsIClearDataService.CLEAR_ALL_CACHES, + resolve + ); + }); + }, + + /** + * Clears all site data, but not cache, because the UI offers + * that functionality separately. + * + * @returns a Promise that resolves when the data is cleared. + */ + async removeSiteData() { + await new Promise(function(resolve) { + Services.clearData.deleteData( + Ci.nsIClearDataService.CLEAR_COOKIES | + Ci.nsIClearDataService.CLEAR_DOM_STORAGES | + Ci.nsIClearDataService.CLEAR_HSTS | + Ci.nsIClearDataService.CLEAR_EME, + resolve + ); + }); + + for (let permission of this._getDeletablePermissions()) { + Services.perms.removePermission(permission); + } + + return this.updateSites(); + }, +}; |