使用 Firebase 电子邮件验证链接登录

Question

我正在使用Firebase进行电子邮件验证。我已经配置了所有内容并发送了验证链接。

问题是，当我点击验证链接时，它会打开我的应用程序，并以AppDelegate方法获得链接。但由于某种原因，我无法使用此链接登录。这是我的代码

func application(_ application: UIApplication, continue userActivity: NSUserActivity, restorationHandler: @escaping ([Any]?) -> Void) -> Bool {
let handled = DynamicLinks.dynamicLinks().handleUniversalLink(userActivity.webpageURL!) { (dynamiclink, error) in
if let DeepLinkUrl = dynamiclink?.url?.absoluteString {
if DeepLinkUrl.contains("verifyEmail") {
if Auth.auth().isSignIn(withEmailLink: DeepLinkUrl) {
Auth.auth().signIn(withEmail: SBUserSetting.getVerificationEmail() ?? "", link: DeepLinkUrl ) { (user, error) in
print("user", user)
print("error", error)
}
}
}
}
}
return handled
}

Auth.auth().isSignIn()总是返回false

你知道我做错了什么吗？

Answer 1

如果要使用无密码登录(此 https://firebase.google.com/docs/auth/ios/email-link-auth#verify_link_and_sign_in(，则不能使用从 url 到 DynamicLink 的转换。您只需像这样将原始 url 传递给您的方法。

func application(_ application: UIApplication, continue userActivity: NSUserActivity, restorationHandler: @escaping ([UIUserActivityRestoring]?) -> Void) -> Bool {
if let webpageUrl = userActivity.webpageURL {
if Auth.auth().isSignIn(withEmailLink: webpageUrl.absoluteString) {
// Saved email locally before, where you send verification, so you don't need to ask the user for it again
// if they open the link on the same device.
if let emailToVerify = UserDefaults.standard.string(forKey: "Email") {
Auth.auth().signIn(withEmail: emailToVerify, link: webpageUrl.absoluteString) { (user, error) in
if let error = error as NSError? {
print(error.localizedDescription)
} else {
// User is logged in
}
}
}
}
}
return true
}

但是，如果您想使用方法发送电子邮件验证，则需要：

func sendEmailVerification() {
let actionCodeSettings = ActionCodeSettings()
actionCodeSettings.url = URL(string: "https://yourdomain.com")
// The sign-in operation has to always be completed in the app.
actionCodeSettings.handleCodeInApp = true
actionCodeSettings.setIOSBundleID(Bundle.main.bundleId) // Budle identifier of your application
Auth.auth().currentUser?.sendEmailVerification(with: actionCodeSettings, completion: { error in
if let error = error as NSError? {
print(error.localizedDescription)
} else {
// inform user about sending verification email
}
})
}

然后，您可以使用DynamicLink类处理到达的电子邮件，如下所示：

func handleDynamicLink(_ url: URL?) -> Bool {
guard let url = url else { return false }
// Here don't know, which method will work, so I handle both for sure :-)
if !DynamicLinks.dynamicLinks().handleUniversalLink(url, completion: { dynamicLink, error in
if let dynamicLink = dynamicLink {
if let oobCode = dynamicLink.url?.getQueryString(parameter: "oobCode") {
Auth.auth().applyActionCode(oobCode) { error in
if let error = error as NSError? {
print(error.localizedDescription)
} else {
// Email was successfully verified
}
}
}
} else {
// Handle error
}
}) {
if let dynamicLink = DynamicLinks.dynamicLinks().dynamicLink(fromCustomSchemeURL: url) {
if let oobCode = dynamicLink.url?.getQueryString(parameter: "oobCode") {
Auth.auth().applyActionCode(oobCode) { error in
if let error = error as NSError? {
print(error.localizedDescription)
} else {
// Email was successfully verified
}
}
}
} else {
// handle error
}
}
return false
}

这是我自己的url扩展方法getQueryString，用于将组件与url分开。

extension URL {
func getQueryString(parameter: String) -> String? {
if let urlComponents = URLComponents(string: self.absoluteString) {
return urlComponents.queryItems?.filter({ item in item.name == parameter }).first?.value
}
return nil
}
}

Answer 2

看看这个：https://firebase.google.com/docs/auth/custom-email-handler。深层链接将包含查询参数oobCode。您需要解析该内容，然后使用applyActionCode完成验证。这些文档侧重于 Web 实现，但应该可移植到 iOS。