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/* 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
import Foundation
import WebKit
class WebCacheUtils {
static let PermittedFolderList = ["KSCrash", "io.sentry", "Snapshots"]
static func reset() {
clearCaches()
clearCookies()
clearWebKitDataStore()
removeInMemoryHistory()
}
private static func clearCaches() {
URLCache.shared.removeAllCachedResponses()
// Delete other remnants in the cache directory, such as HSTS.plist.
if let cachesPath = NSSearchPathForDirectoriesInDomains(.cachesDirectory, .userDomainMask, true).first {
let contents = (try? FileManager.default.contentsOfDirectory(atPath: cachesPath)) ?? []
for file in contents where !PermittedFolderList.contains(file) {
FileManager.default.removeItemAndContents(path: "\(cachesPath)/\(file)")
}
}
}
private static func clearCookies() {
HTTPCookieStorage.shared.removeCookies(since: Date.distantPast)
// Delete other cookies, such as .binarycookies files.
if let libraryPath = NSSearchPathForDirectoriesInDomains(.libraryDirectory, .userDomainMask, true).first {
let cookiesPath = (libraryPath as NSString).appendingPathComponent("Cookies")
FileManager.default.removeItemAndContents(path: cookiesPath)
}
}
private static func clearWebKitDataStore() {
// Clear everything that WKWebView creates
let dateFrom = Date(timeIntervalSince1970: 0)
let dataTypes: Set<String> = [WKWebsiteDataTypeDiskCache,
WKWebsiteDataTypeOfflineWebApplicationCache,
WKWebsiteDataTypeMemoryCache,
WKWebsiteDataTypeLocalStorage,
WKWebsiteDataTypeCookies,
WKWebsiteDataTypeSessionStorage,
WKWebsiteDataTypeIndexedDBDatabases,
WKWebsiteDataTypeWebSQLDatabases]
WKWebsiteDataStore.default().removeData(ofTypes: dataTypes, modifiedSince: dateFrom, completionHandler: {})
}
private static func removeInMemoryHistory() {
// Remove the in-memory history that WebKit maintains.
// With Swift 4 we have to cast it to AnyObject first
if let klazz = NSClassFromString("Web" + "History"),
let clazz = klazz as AnyObject as? NSObjectProtocol {
if clazz.responds(to: Selector(("optional" + "Shared" + "History"))) {
if let webHistory = clazz.perform(Selector(("optional" + "Shared" + "History"))) {
let o = webHistory.takeUnretainedValue()
_ = o.perform(Selector(("remove" + "All" + "Items")))
}
}
}
}
}