0001    // The MIT License (MIT)
0002    
0003    // Copyright (c) 2015 JohnLui <wenhanlv@gmail.com> https://github.com/johnlui
0005    // Permission is hereby granted, free of charge, to any person obtaining a copy
0006    // of this software and associated documentation files (the "Software"), to deal
0007    // in the Software without restriction, including without limitation the rights
0008    // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
0009    // copies of the Software, and to permit persons to whom the Software is
0010    // furnished to do so, subject to the following conditions:
0011    
0012    // The above copyright notice and this permission notice shall be included in all
0013    // copies or substantial portions of the Software.
0014    
0015    // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
0016    // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
0017    // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
0018    // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
0019    // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
0020    // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
0021    // SOFTWARE.
0022    //
0023    //  PitayaManager+NSURLSessionDelegate.swift
0024    //  Pitaya
0025    //
0026    //  Created by 吕文翰 on 15/10/8.
0027    //
0028    
0029    import Foundation
0030    
0031    private typealias URLSessionDelegate
PitayaManager+NSURLSessionDelegate.swift:33
extension URLSessionDelegate { = PitayaManager
0032    
0033    extension URLSessionDelegate {
0034        /**
0035        a delegate method to check whether the remote cartification is the same with given certification.
0036        
0037        - parameter session:           NSURLSession
0038        - parameter challenge:         NSURLAuthenticationChallenge
0039        - parameter completionHandler: the completionHandler closure
0040        */
0041        @objc func URLSession(session: NSURLSession, didReceiveChallenge challenge: NSURLAuthenticationChallenge, completionHandler: (NSURLSessionAuthChallengeDisposition, NSURLCredential?) -> Void) {
0042            if let localCertificateData = self.localCertData {
0043                if let serverTrust = challenge.protectionSpace.serverTrust,
0044                    certificate = SecTrustGetCertificateAtIndex(serverTrust, ),
0045                    remoteCertificateData: NSData = SecCertificateCopyData(certificate) {
0046                        if localCertificateData.isEqualToData(remoteCertificateData) {
0047                            let credential = NSURLCredential(forTrust: serverTrust)
0048                            challenge.sender?.useCredential(credential, forAuthenticationChallenge: challenge)
0049                            completionHandler(NSURLSessionAuthChallengeDisposition.UseCredential, credential)
0050                        } else {
0051                            challenge.sender?.cancelAuthenticationChallenge(challenge)
0052                            completionHandler(NSURLSessionAuthChallengeDisposition.CancelAuthenticationChallenge, nil)
0053                            self.sSLValidateErrorCallBack?()
0054                        }
0055                } else {
0056                    // could not tested
0057                    NSLog("Pitaya: Get RemoteCertificateData or LocalCertificateData error!")
0058                }
0059            } else {
0060                completionHandler(NSURLSessionAuthChallengeDisposition.UseCredential, nil)
0061            }
0062        }
0063    }