diff options
Diffstat (limited to 'data/extensions/jsr@javascriptrestrictor/fp_detect_background.js')
| -rw-r--r-- | data/extensions/jsr@javascriptrestrictor/fp_detect_background.js | 146 |
1 files changed, 94 insertions, 52 deletions
diff --git a/data/extensions/jsr@javascriptrestrictor/fp_detect_background.js b/data/extensions/jsr@javascriptrestrictor/fp_detect_background.js index a60c2fd..0e4e27d 100644 --- a/data/extensions/jsr@javascriptrestrictor/fp_detect_background.js +++ b/data/extensions/jsr@javascriptrestrictor/fp_detect_background.js @@ -49,21 +49,32 @@ * \ingroup FPD */ + +// START persistent configuration data + /** * FPD enable flag. Evaluate only when active. */ var fpDetectionOn; /** - * Associtive array of hosts, that are currently among trusted ones. + * Associative array of hosts, that are currently among trusted ones. */ var fpdWhitelist = {}; /** - * Associtive array of settings supported by this module. + * Associative array of settings supported by this module. */ var fpdSettings = {}; +// END persistent configuration data + + +/** + * Array containing names of unsupported wrappers that should be treated like supported ones during groups evaluation. + */ +const exceptionWrappers = ["CSSStyleDeclaration.prototype.fontFamily"]; + /** * API logs database of following structure: * "tabId" : { @@ -80,41 +91,49 @@ var fpdSettings = {}; * *values in quotations are substituted by concrete names * */ -var fpDb = new Observable(); +var fpdObservable = new Observable(); -/** - * Stores latest evaluation statistics for every examined tab. This statistics contains data about accessed groups and resources - * and their weights after evaluation. It can be used for debugging or as an informative statement in GUI. - * It also contains flag for every tab to limit number of notifications. - */ -var latestEvals = {}; +// depends on /nscl/common/CachedStorage.js +// session-bound globals +var fpdGlobals = CachedStorage.init({ + + fpDb: {}, /** - * Parsed groups object containing necessary group information needed for evaluation. - * Groups are indexed by level and name for easier and faster access. + * Contains information about tabs current state. */ -var fpGroups = {}; + availableTabs: {}, + + /** + * Store if the user was already notified about fingerprinting activity in the tab. + */ + stopNotifyFlag: {}, /** - * Object containing information about unsupported wrappers for given browser. + * A global variable shared with level_cache that controls the collection of calling scripts for FPD + * report. */ -var unsupportedWrappers = {}; + fpd_track_callers_tab: null, + +}); /** - * Array containing names of unsupported wrappers that should be treated like supported ones during groups evaluation. + * Stores latest evaluation statistics for every examined tab. This statistics contains data about accessed groups and resources + * and their weights after evaluation. It can be used for debugging or as an informative statement in GUI. + * It also contains flag for every tab to limit number of notifications. */ -var exceptionWrappers = ["CSSStyleDeclaration.prototype.fontFamily"]; +let latestEvals = {}; /** - * Contains information about tabs current state. + * Parsed groups object containing necessary group information needed for evaluation. + * Groups are indexed by level and name for easier and faster access. */ -var availableTabs = {}; +let fpGroups = {}; /** - * A global variable shared with level_cache that controls the collection of calling scripts for FPD - * report. + * Object containing information about unsupported wrappers for given browser. */ -var fpd_track_callers_tab = undefined; +let unsupportedWrappers = {}; /** * Definition of settings supported by this module. @@ -199,18 +218,20 @@ const FPD_DEF_SETTINGS = { } }; + +var actionApi = browser.browserAction || browser.action; // unify default color of popup badge background between different browsers -browser.browserAction.setBadgeBackgroundColor({color: "#6E7378"}); +actionApi.setBadgeBackgroundColor({color: "#6E7378"}); // unify default color of popup badge text between different browsers -if (typeof browser.browserAction.setBadgeTextColor === "function") { - browser.browserAction.setBadgeTextColor({color: "#FFFFFF"}); +if (typeof actionApi.setBadgeTextColor === "function") { + actionApi.setBadgeTextColor({color: "#FFFFFF"}); } /** * This function initializes FPD module, loads configuration from storage, and registers listeners needed for fingerprinting detection. */ -function initFpd() { +async function initFpd() { // fill up fpGroups object with necessary data for evaluation for (let groupsLevel in fp_levels.groups) { fpGroups[groupsLevel] = fpGroups[groupsLevel] || {}; @@ -222,8 +243,9 @@ function initFpd() { } } - // load configuration and settings from storage - fpdLoadConfiguration(); + // load configuration and settings from storage + await fpdLoadConfiguration(); + await fpdGlobals; // take care of unsupported resources for cross-browser behaviour uniformity balanceUnsupportedWrappers(); @@ -261,16 +283,26 @@ function initFpd() { browser.storage.sync.set({"fpdSettings": fpdSettings}); }); - // listen for requests through webRequest API and decide whether to block them - browser.webRequest.onBeforeRequest.addListener( - fpdRequestCancel, - {urls: ["<all_urls>"]}, - ["blocking"] - ); - + if (self.window) { + // Firefox, event page has window + // listen for requests through webRequest API and decide whether to block them + browser.webRequest.onBeforeRequest.addListener( + fpdRequestCancel, + {urls: ["<all_urls>"]}, + ["blocking"] + ); + } else { + // mv3: cannot block! + // hide behavior settings + // TODO: shame Google in the setting panels for the missing feature + delete FPD_DEF_SETTINGS["behavior"]; + // force passive behavior setting + fpdSettings.behavior = 0; + browser.storage.sync.set({"fpdSettings": fpdSettings}); + } // listen for navigation events to initiate storage clearing of fingerprinting web pages browser.webNavigation.onBeforeNavigate.addListener((details) => { - if (latestEvals[details.tabId] && latestEvals[details.tabId].stopNotifyFlag && fpdSettings.behavior > 0) { + if (latestEvals[details.tabId] && stopNotifyFlag[details.tabId] && fpdSettings.behavior > 0) { // clear storages (using content script) for every frame in this tab if (details.tabId >= 0) { browser.tabs.sendMessage(details.tabId, { @@ -285,7 +317,7 @@ function initFpd() { browser.tabs.query({}).then(function(results) { results.forEach(function(tab) { availableTabs[tab.id] = tab; - fpDb[tab.id] = {}; + fpDb[tab.id] ||= {}; periodicEvaluation(tab.id, 500); }); }); @@ -302,6 +334,7 @@ function initFpd() { * It checks which resources are unsupported for given browser and adjust criteria of loaded FPD configuration accordingly. */ function balanceUnsupportedWrappers() { + if (!self.window) return false; // mv3 service worker? // object containing groups effected by criteria adjustment and corresponding deleted subgroups var effectedGroups = {}; @@ -625,7 +658,7 @@ function evaluateGroupsCriteria(rootGroup, level, tabId) { * type (Type of resource - call/get/set) * accesses (Number of accesses to specified resource) */ -function evaluateResourcesCriteria(resource, groupName, level, tabId) { +function evaluateResourcesCriteria(resource, groupName, level, tabId) { // all result objects for given resource (set/get/call) var scores = []; @@ -633,7 +666,7 @@ function evaluateResourcesCriteria(resource, groupName, level, tabId) { var resourceObj = fp_levels.wrappers[level].filter((x) => (x.resource == resource))[0]; var groupsArray = resourceObj.groups.filter((x) => (x.group == groupName)); - // evaluate every retrieved group object + // evaluate every retrieved group object for (let groupObj of groupsArray) { // initialize new result object var res = {} @@ -737,8 +770,10 @@ function evaluateResourcesCriteria(resource, groupName, level, tabId) { * \param message Receives full message. * \param sender Sender of the message. */ -function fpdCommonMessageListener(record, sender) { - if (record) { +async function fpdCommonMessageListener(record, sender) { + if (!record) return; + await fpdGlobals; + try { switch (record.purpose) { case "fp-detection": // check objects existance => if do not exist, create new one @@ -758,7 +793,7 @@ function fpdCommonMessageListener(record, sender) { // increase counter for total accesses fpCounterObj["total"] = fpCounterObj["total"] || 0; fpCounterObj["total"] += 1; - fpDb.update(record.resource, sender.tab.id, record.type, fpCounterObj["total"]); + fpdObservable.update(record.resource, sender.tab.id, record.type, fpCounterObj["total"]); // Track callers fpCounterObj["callers"] = fpCounterObj["callers"] || {}; @@ -868,6 +903,11 @@ function fpdCommonMessageListener(record, sender) { fpd_track_callers_tab = undefined; } } + } catch (e) { + console.error(e, "Error processing", record); + throw e; + } finally { + CachedStorage.save(); } } @@ -898,12 +938,12 @@ function fpdRequestCancel(requestDetails) { /** * The function that loads module configuration from sync storage. */ -function fpdLoadConfiguration() { - browser.storage.sync.get(["fpDetectionOn", "fpdWhitelist", "fpdSettings"]).then(function(result) { - fpDetectionOn = result.fpDetectionOn ? true : false; - fpdWhitelist = result.fpdWhitelist ? result.fpdWhitelist : {}; - fpdSettings = result.fpdSettings ? result.fpdSettings : {}; - }); +async function fpdLoadConfiguration() { + ({fpDetectionOn, fpdWhitelist, fpdSettings} = await browser.storage.sync.get({ + fpDetectionOn: false, + fpdWhitelist: {}, + fpdSettings: {}, + })); } /** @@ -915,7 +955,7 @@ function fpdLoadConfiguration() { function processGroupsRecursive(input, groupsLevel) { fpGroups[groupsLevel][input.name] = {}; fpGroups[groupsLevel][input.name]["description"] = input["description"] || ""; - + // criteria missing => set implicit criteria fpGroups[groupsLevel][input.name]["criteria"] = input["criteria"] || [{value:1, weight:1}]; fpGroups[groupsLevel][input.name]["items"] = {}; @@ -1031,6 +1071,7 @@ function refreshDb(tabId) { if (availableTabs[tabId] && availableTabs[tabId].timerId) { clearTimeout(availableTabs[tabId].timerId); } + CachedStorage.save(); } /** @@ -1067,18 +1108,19 @@ function evaluateFingerprinting(tabId) { latestEvals[tabId].severity = evalResult.severity; } - // modify color of browserAction + // modify color of action icon if (evalResult.severity[2]) { - browser.browserAction.setBadgeBackgroundColor({color: evalResult.severity[2], tabId: tabId}); + actionApi.setBadgeBackgroundColor({color: evalResult.severity[2], tabId: tabId}); } // if actualWeight of root group is higher than 0 => reactive phase and applying measures if (evalResult.weight) { // create notification for user if behavior is "notification" or higher (only once for every tab load) - if (fpdSettings.notifications == 1 && !latestEvals[tabId].stopNotifyFlag) { - latestEvals[tabId].stopNotifyFlag = true; + if (fpdSettings.notifications == 1 && !stopNotifyFlag[tabId]) { notifyFingerprintBlocking(tabId); + stopNotifyFlag[tabId] = true; + CachedStorage.save(); } // block request and clear cache data only if "blocking" behavior is set |