ios - Alamofire 4.0 的证书无效问题

Question

我正在尝试通过 https 为我的 iOS 应用程序使用网络服务。 Web 服务器使用自签名证书。

使用网络服务时，出现“证书无效”错误。

FAILURE: Error Domain=NSURLErrorDomain Code=-1202 "The certificate for this server is invalid. You might be connecting to a server that is pretending to be “portal” which could put your confidential information at risk."

我知道最佳做法是在服务器端修复此问题以启用受信任的根 CA。但由于这是一个临时开发环境，我们使用的是自签名证书。由于这是 ATS 问题，我在我的 info.plist 中编辑了 ATS，如下所示。

 <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>NSExceptionDomains</key>
    <dict>
        <key>devportal</key>
        <dict>
            <key>NSTemporaryExceptionMinimumTLSVersion</key>
            <string>TLSv1.2</string>
            <key>NSIncludesSubdomains</key>
            <true/>
            <key>NSExceptionRequiresForwardSecrecy</key>
            <false/>
            <key>NSExceptionAllowsInsecureHTTPLoads</key>
            <true/>
        </dict>
    </dict>
    <key>NSAllowsArbitraryLoads</key>
    <false/>
</dict>
</plist>

由于 NSException 域不适用于 IP 和端口号，我在我的 etc/hosts 文件中为 Web 服务器 IP 创建了一个主机条目，并像 https://devportal:8443/rest/login 一样使用它。而不是将其作为 https://192.22.xx.xxx:8443/rest/login 使用

我遵循了关于服务器信任策略的 alamofire 文档，编辑了 ATS 以允许异常域，但对我来说没有任何效果。我在这个问题上花了 3 天多的时间。我错过了什么吗？有人遇到过类似的问题吗？有什么解决办法吗？提前致谢

我使用的是 almofire 4.0，Xcode 8.0。下面是我的代码。

class LoginService{
     private static var Manager: Alamofire.SessionManager = {

          let pathToCert = Bundle.main.path(forResource: "192.22.xx.xxx", ofType: "crt") // Downloaded this certificate and have added to my bundle
          let localCertificate:NSData = NSData(contentsOfFile: pathToCert!)!

          // Create the server trust policies
          let serverTrustPolicies: [String: ServerTrustPolicy] = [
               "192.22.xx.xxx": .pinCertificates(
                    certificates: [SecCertificateCreateWithData(nil, localCertificate)!],
                    validateCertificateChain: true,
                    validateHost: true
               ),

               "devportal:8443": .disableEvaluation
          ]

          // Create custom manager
          let configuration = URLSessionConfiguration.default
          configuration.httpAdditionalHeaders = Alamofire.SessionManager.defaultHTTPHeaders
          let manager = Alamofire.SessionManager(
               configuration: URLSessionConfiguration.default,
               serverTrustPolicyManager: ServerTrustPolicyManager(policies: serverTrustPolicies)
          )

          return manager
     }()



     /**
      Calls the Login Web Service to authenticate the user
      */
     public func login(username:String, password: String){

          let parameters = [
               "username": "TEST",
               "password": "PASSWORD",
                  ]
          let header: HTTPHeaders = ["Accept": "application/json"]
          LoginService.Manager.request("https://devportal:8443/rest/login", method: .post, parameters: parameters, encoding: JSONEncoding(options: []),headers :header).responseJSON { response in
               debugPrint(response)

               if let json = response.result.value {
                    print("JSON: \(json)")
               }
          }



     }
}

Answer 1

我像下面这样修改了我的代码并且它起作用了。我提到了Swift: How to Make Https Request Using Server SSL Certificate用于解决此问题。

       class LoginService{
             private static var Manager: Alamofire.SessionManager = {
           
                  // Create the server trust policies
                  let serverTrustPolicies: [String: ServerTrustPolicy] = [
                      
                       "devportal:8443": .disableEvaluation
                  ]
        
                  // Create custom manager
                  let configuration = URLSessionConfiguration.default
                  configuration.httpAdditionalHeaders = Alamofire.SessionManager.defaultHTTPHeaders
                  let manager = Alamofire.SessionManager(
                       configuration: URLSessionConfiguration.default,
                       serverTrustPolicyManager: ServerTrustPolicyManager(policies: serverTrustPolicies)
                  )
        
                  return manager
             }()
        
        
        
             /**
              Calls the Login Web Service to authenticate the user
              */
             public func login(username:String, password: String){
    
    // Handle Authentication challenge
        
          let delegate: Alamofire.SessionDelegate = LoginService.Manager.delegate
         delegate.sessionDidReceiveChallenge = { session, challenge in
              var disposition: URLSession.AuthChallengeDisposition = .performDefaultHandling
              var credential: URLCredential?
              if challenge.protectionSpace.authenticationMethod == NSURLAuthenticationMethodServerTrust {
                   disposition = URLSession.AuthChallengeDisposition.useCredential
                   credential = URLCredential(trust: challenge.protectionSpace.serverTrust!)
              } else {
                   if challenge.previousFailureCount > 0 {
                        disposition = .cancelAuthenticationChallenge
                   } else {
                        credential = LoginService.Manager.session.configuration.urlCredentialStorage?.defaultCredential(for: challenge.protectionSpace)
                        if credential != nil {
                             disposition = .useCredential
                        }
                   }
              }
              return (disposition, credential)
         }
    
//Web service Request    
                  let parameters = [
                       "username": "TEST",
                       "password": "PASSWORD",
                          ]
                  let header: HTTPHeaders = ["Accept": "application/json"]
                  LoginService.Manager.request("https://devportal:8443/rest/login", method: .post, parameters: parameters, encoding: JSONEncoding(options: []),headers :header).responseJSON { response in
                       debugPrint(response)
        
                       if let json = response.result.value {
                            print("JSON: \(json)")
                       }
                  }
        
        
        
             }
        }

你还应该如下配置你的plist

 <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>NSExceptionDomains</key>
    <dict>
        <key>devportal</key>
        <dict>
            <key>NSTemporaryExceptionMinimumTLSVersion</key>
            <string>TLSv1.2</string>
            <key>NSIncludesSubdomains</key>
            <true/>
            <key>NSExceptionRequiresForwardSecrecy</key>
            <false/>
            <key>NSExceptionAllowsInsecureHTTPLoads</key>
            <true/>
        </dict>
    </dict>
    <key>NSAllowsArbitraryLoads</key>
    <false/>
</dict>
</plist>

Do not enter IP or port numbers in your NSExceptiondomains. It won'twork. If you are trying to connect to a web server with IP address,map the IP address to a domain by adding a host entry in etc/hostsfile in your mac and then use the domain name in NSExceptionDomains

IMPORTANT: Do not use this code in production as this puts your usersinformation at risk, by bypassing auth challenge.