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Authentication Challenge Handler #10

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merged 1 commit into from
May 29, 2020
Merged

Authentication Challenge Handler #10

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48 changes: 41 additions & 7 deletions Sources/IBMHyperProtectSDK/IBMMongoRemote.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -34,7 +34,9 @@ import CareKitStore
public final class IBMMongoRemote: OCKRemoteSynchronizable {
private let url: String
private let timeout: TimeInterval


private var urlSession: URLSession

private enum Method : String {
case GET
case POST
Expand All @@ -45,11 +47,15 @@ public final class IBMMongoRemote: OCKRemoteSynchronizable {
///
/// - Parameters:
/// - apiLocation: uri format (https://ip:port)
/// - certificate: name of the authentication challenge certificate saved to the project directory ('der' filetype)
/// - apiTimeOut: timeout
/// - appleId: Apple ID used for authentication and authorization
public init(apiLocation : String = "http://localhost:3000/", apiTimeOut : TimeInterval = 2){
public init(apiLocation : String = "http://localhost:3000/", certificate : String = "carekit-root", apiTimeOut : TimeInterval = 2){
self.url = apiLocation
self.timeout = apiTimeOut

let urlSessionDelegate = IBMMongoRemoteURLSessionDelegate(certificate: certificate)
urlSession = URLSession(configuration: .default, delegate: urlSessionDelegate, delegateQueue: nil)
}

// MARK: OCKRemoteSynchronizable
Expand Down Expand Up @@ -114,7 +120,7 @@ public final class IBMMongoRemote: OCKRemoteSynchronizable {
let outputStr = String(data: request.httpBody!, encoding: String.Encoding.utf8) as String?
debugPrint("Pushing this JSON to backend :" + outputStr!)

let requestTask = URLSession.shared.dataTask(with: request) {
let requestTask = urlSession.dataTask(with: request) {
(data: Data?, response: URLResponse?, error: Error?) in

guard let response = response as? HTTPURLResponse,
Expand Down Expand Up @@ -164,10 +170,9 @@ public final class IBMMongoRemote: OCKRemoteSynchronizable {
request.addValue("application/json", forHTTPHeaderField: "Accept")

debugPrint(request)

let requestTask = URLSession.shared.dataTask(with: request) {
let requestTask = urlSession.dataTask(with: request) {
(data: Data?, response: URLResponse?, error: Error?) in

guard let data = data,
let response = response as? HTTPURLResponse,
error == nil else { // check for networking error
Expand Down Expand Up @@ -196,6 +201,35 @@ public final class IBMMongoRemote: OCKRemoteSynchronizable {
}
}

private final class IBMMongoRemoteURLSessionDelegate: NSObject, URLSessionDataDelegate {
private var certificate: String

init(certificate: String) {
self.certificate = certificate
}

func urlSession(_ session: URLSession, task: URLSessionTask, didReceive challenge: URLAuthenticationChallenge, completionHandler: @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
let protectionSpace = challenge.protectionSpace

guard let serverTrust = protectionSpace.serverTrust else {
completionHandler(.performDefaultHandling, nil)
return
}

guard let certPath = Bundle.main.path(forResource: certificate, ofType: "der") else {
completionHandler(.performDefaultHandling, nil)
return
}

let certData = NSData(contentsOfFile: certPath)
let cert = SecCertificateCreateWithData(kCFAllocatorDefault, certData!)
SecTrustSetAnchorCertificates(serverTrust, [cert] as CFArray)

let credential = URLCredential(trust: serverTrust)
completionHandler(.useCredential, credential)
}
}

private protocol Fetchable: Codable {
static var endpoint: String { get }
}
Expand Down Expand Up @@ -228,7 +262,7 @@ public extension IBMMongoRemote {
request.httpMethod = Method.DELETE.rawValue
request.addValue("application/json", forHTTPHeaderField: "Accept")

let requestTask = URLSession.shared.dataTask(with: request) {
let requestTask = urlSession.dataTask(with: request) {
(data: Data?, response: URLResponse?, error: Error?) in

guard let response = response as? HTTPURLResponse,
Expand Down