完成PAC生成和从GFWList更新

Pods/Alamofire/Source/Request.swift

@@ -0,0 +1,568 @@
+//
+//  Request.swift
+//
+//  Copyright (c) 2014-2016 Alamofire Software Foundation (http://alamofire.org/)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+
+/**
+    Responsible for sending a request and receiving the response and associated data from the server, as well as 
+    managing its underlying `NSURLSessionTask`.
+*/
+public class Request {
+
+    // MARK: - Properties
+
+    /// The delegate for the underlying task.
+    public let delegate: TaskDelegate
+
+    /// The underlying task.
+    public var task: NSURLSessionTask { return delegate.task }
+
+    /// The session belonging to the underlying task.
+    public let session: NSURLSession
+
+    /// The request sent or to be sent to the server.
+    public var request: NSURLRequest? { return task.originalRequest }
+
+    /// The response received from the server, if any.
+    public var response: NSHTTPURLResponse? { return task.response as? NSHTTPURLResponse }
+
+    /// The progress of the request lifecycle.
+    public var progress: NSProgress { return delegate.progress }
+
+    var startTime: CFAbsoluteTime?
+    var endTime: CFAbsoluteTime?
+
+    // MARK: - Lifecycle
+
+    init(session: NSURLSession, task: NSURLSessionTask) {
+        self.session = session
+
+        switch task {
+        case is NSURLSessionUploadTask:
+            delegate = UploadTaskDelegate(task: task)
+        case is NSURLSessionDataTask:
+            delegate = DataTaskDelegate(task: task)
+        case is NSURLSessionDownloadTask:
+            delegate = DownloadTaskDelegate(task: task)
+        default:
+            delegate = TaskDelegate(task: task)
+        }
+
+        delegate.queue.addOperationWithBlock { self.endTime = CFAbsoluteTimeGetCurrent() }
+    }
+
+    // MARK: - Authentication
+
+    /**
+        Associates an HTTP Basic credential with the request.
+
+        - parameter user:        The user.
+        - parameter password:    The password.
+        - parameter persistence: The URL credential persistence. `.ForSession` by default.
+
+        - returns: The request.
+    */
+    public func authenticate(
+        user user: String,
+        password: String,
+        persistence: NSURLCredentialPersistence = .ForSession)
+        -> Self
+    {
+        let credential = NSURLCredential(user: user, password: password, persistence: persistence)
+
+        return authenticate(usingCredential: credential)
+    }
+
+    /**
+        Associates a specified credential with the request.
+
+        - parameter credential: The credential.
+
+        - returns: The request.
+    */
+    public func authenticate(usingCredential credential: NSURLCredential) -> Self {
+        delegate.credential = credential
+
+        return self
+    }
+
+    /**
+        Returns a base64 encoded basic authentication credential as an authorization header dictionary.
+
+        - parameter user:     The user.
+        - parameter password: The password.
+
+        - returns: A dictionary with Authorization key and credential value or empty dictionary if encoding fails.
+    */
+    public static func authorizationHeader(user user: String, password: String) -> [String: String] {
+        guard let data = "\(user):\(password)".dataUsingEncoding(NSUTF8StringEncoding) else { return [:] }
+
+        let credential = data.base64EncodedStringWithOptions([])
+
+        return ["Authorization": "Basic \(credential)"]
+    }
+
+    // MARK: - Progress
+
+    /**
+        Sets a closure to be called periodically during the lifecycle of the request as data is written to or read 
+        from the server.
+
+        - For uploads, the progress closure returns the bytes written, total bytes written, and total bytes expected 
+          to write.
+        - For downloads and data tasks, the progress closure returns the bytes read, total bytes read, and total bytes 
+          expected to read.
+
+        - parameter closure: The code to be executed periodically during the lifecycle of the request.
+
+        - returns: The request.
+    */
+    public func progress(closure: ((Int64, Int64, Int64) -> Void)? = nil) -> Self {
+        if let uploadDelegate = delegate as? UploadTaskDelegate {
+            uploadDelegate.uploadProgress = closure
+        } else if let dataDelegate = delegate as? DataTaskDelegate {
+            dataDelegate.dataProgress = closure
+        } else if let downloadDelegate = delegate as? DownloadTaskDelegate {
+            downloadDelegate.downloadProgress = closure
+        }
+
+        return self
+    }
+
+    /**
+        Sets a closure to be called periodically during the lifecycle of the request as data is read from the server.
+
+        This closure returns the bytes most recently received from the server, not including data from previous calls. 
+        If this closure is set, data will only be available within this closure, and will not be saved elsewhere. It is 
+        also important to note that the `response` closure will be called with nil `responseData`.
+
+        - parameter closure: The code to be executed periodically during the lifecycle of the request.
+
+        - returns: The request.
+    */
+    public func stream(closure: (NSData -> Void)? = nil) -> Self {
+        if let dataDelegate = delegate as? DataTaskDelegate {
+            dataDelegate.dataStream = closure
+        }
+
+        return self
+    }
+
+    // MARK: - State
+
+    /**
+        Resumes the request.
+    */
+    public func resume() {
+        if startTime == nil { startTime = CFAbsoluteTimeGetCurrent() }
+
+        task.resume()
+        NSNotificationCenter.defaultCenter().postNotificationName(Notifications.Task.DidResume, object: task)
+    }
+
+    /**
+        Suspends the request.
+    */
+    public func suspend() {
+        task.suspend()
+        NSNotificationCenter.defaultCenter().postNotificationName(Notifications.Task.DidSuspend, object: task)
+    }
+
+    /**
+        Cancels the request.
+    */
+    public func cancel() {
+        if let
+            downloadDelegate = delegate as? DownloadTaskDelegate,
+            downloadTask = downloadDelegate.downloadTask
+        {
+            downloadTask.cancelByProducingResumeData { data in
+                downloadDelegate.resumeData = data
+            }
+        } else {
+            task.cancel()
+        }
+
+        NSNotificationCenter.defaultCenter().postNotificationName(Notifications.Task.DidCancel, object: task)
+    }
+
+    // MARK: - TaskDelegate
+
+    /**
+        The task delegate is responsible for handling all delegate callbacks for the underlying task as well as 
+        executing all operations attached to the serial operation queue upon task completion.
+    */
+    public class TaskDelegate: NSObject {
+
+        /// The serial operation queue used to execute all operations after the task completes.
+        public let queue: NSOperationQueue
+
+        let task: NSURLSessionTask
+        let progress: NSProgress
+
+        var data: NSData? { return nil }
+        var error: NSError?
+
+        var initialResponseTime: CFAbsoluteTime?
+        var credential: NSURLCredential?
+
+        init(task: NSURLSessionTask) {
+            self.task = task
+            self.progress = NSProgress(totalUnitCount: 0)
+            self.queue = {
+                let operationQueue = NSOperationQueue()
+                operationQueue.maxConcurrentOperationCount = 1
+                operationQueue.suspended = true
+
+                if #available(OSX 10.10, *) {
+                    operationQueue.qualityOfService = NSQualityOfService.Utility
+                }
+
+                return operationQueue
+            }()
+        }
+
+        deinit {
+            queue.cancelAllOperations()
+            queue.suspended = false
+        }
+
+        // MARK: - NSURLSessionTaskDelegate
+
+        // MARK: Override Closures
+
+        var taskWillPerformHTTPRedirection: ((NSURLSession, NSURLSessionTask, NSHTTPURLResponse, NSURLRequest) -> NSURLRequest?)?
+        var taskDidReceiveChallenge: ((NSURLSession, NSURLSessionTask, NSURLAuthenticationChallenge) -> (NSURLSessionAuthChallengeDisposition, NSURLCredential?))?
+        var taskNeedNewBodyStream: ((NSURLSession, NSURLSessionTask) -> NSInputStream?)?
+        var taskDidCompleteWithError: ((NSURLSession, NSURLSessionTask, NSError?) -> Void)?
+
+        // MARK: Delegate Methods
+
+        func URLSession(
+            session: NSURLSession,
+            task: NSURLSessionTask,
+            willPerformHTTPRedirection response: NSHTTPURLResponse,
+            newRequest request: NSURLRequest,
+            completionHandler: ((NSURLRequest?) -> Void))
+        {
+            var redirectRequest: NSURLRequest? = request
+
+            if let taskWillPerformHTTPRedirection = taskWillPerformHTTPRedirection {
+                redirectRequest = taskWillPerformHTTPRedirection(session, task, response, request)
+            }
+
+            completionHandler(redirectRequest)
+        }
+
+        func URLSession(
+            session: NSURLSession,
+            task: NSURLSessionTask,
+            didReceiveChallenge challenge: NSURLAuthenticationChallenge,
+            completionHandler: ((NSURLSessionAuthChallengeDisposition, NSURLCredential?) -> Void))
+        {
+            var disposition: NSURLSessionAuthChallengeDisposition = .PerformDefaultHandling
+            var credential: NSURLCredential?
+
+            if let taskDidReceiveChallenge = taskDidReceiveChallenge {
+                (disposition, credential) = taskDidReceiveChallenge(session, task, challenge)
+            } else if challenge.protectionSpace.authenticationMethod == NSURLAuthenticationMethodServerTrust {
+                let host = challenge.protectionSpace.host
+
+                if let
+                    serverTrustPolicy = session.serverTrustPolicyManager?.serverTrustPolicyForHost(host),
+                    serverTrust = challenge.protectionSpace.serverTrust
+                {
+                    if serverTrustPolicy.evaluateServerTrust(serverTrust, isValidForHost: host) {
+                        disposition = .UseCredential
+                        credential = NSURLCredential(forTrust: serverTrust)
+                    } else {
+                        disposition = .CancelAuthenticationChallenge
+                    }
+                }
+            } else {
+                if challenge.previousFailureCount > 0 {
+                    disposition = .RejectProtectionSpace
+                } else {
+                    credential = self.credential ?? session.configuration.URLCredentialStorage?.defaultCredentialForProtectionSpace(challenge.protectionSpace)
+
+                    if credential != nil {
+                        disposition = .UseCredential
+                    }
+                }
+            }
+
+            completionHandler(disposition, credential)
+        }
+
+        func URLSession(
+            session: NSURLSession,
+            task: NSURLSessionTask,
+            needNewBodyStream completionHandler: ((NSInputStream?) -> Void))
+        {
+            var bodyStream: NSInputStream?
+
+            if let taskNeedNewBodyStream = taskNeedNewBodyStream {
+                bodyStream = taskNeedNewBodyStream(session, task)
+            }
+
+            completionHandler(bodyStream)
+        }
+
+        func URLSession(session: NSURLSession, task: NSURLSessionTask, didCompleteWithError error: NSError?) {
+            if let taskDidCompleteWithError = taskDidCompleteWithError {
+                taskDidCompleteWithError(session, task, error)
+            } else {
+                if let error = error {
+                    self.error = error
+
+                    if let
+                        downloadDelegate = self as? DownloadTaskDelegate,
+                        userInfo = error.userInfo as? [String: AnyObject],
+                        resumeData = userInfo[NSURLSessionDownloadTaskResumeData] as? NSData
+                    {
+                        downloadDelegate.resumeData = resumeData
+                    }
+                }
+
+                queue.suspended = false
+            }
+        }
+    }
+
+    // MARK: - DataTaskDelegate
+
+    class DataTaskDelegate: TaskDelegate, NSURLSessionDataDelegate {
+        var dataTask: NSURLSessionDataTask? { return task as? NSURLSessionDataTask }
+
+        private var totalBytesReceived: Int64 = 0
+        private var mutableData: NSMutableData
+        override var data: NSData? {
+            if dataStream != nil {
+                return nil
+            } else {
+                return mutableData
+            }
+        }
+
+        private var expectedContentLength: Int64?
+        private var dataProgress: ((bytesReceived: Int64, totalBytesReceived: Int64, totalBytesExpectedToReceive: Int64) -> Void)?
+        private var dataStream: ((data: NSData) -> Void)?
+
+        override init(task: NSURLSessionTask) {
+            mutableData = NSMutableData()
+            super.init(task: task)
+        }
+
+        // MARK: - NSURLSessionDataDelegate
+
+        // MARK: Override Closures
+
+        var dataTaskDidReceiveResponse: ((NSURLSession, NSURLSessionDataTask, NSURLResponse) -> NSURLSessionResponseDisposition)?
+        var dataTaskDidBecomeDownloadTask: ((NSURLSession, NSURLSessionDataTask, NSURLSessionDownloadTask) -> Void)?
+        var dataTaskDidReceiveData: ((NSURLSession, NSURLSessionDataTask, NSData) -> Void)?
+        var dataTaskWillCacheResponse: ((NSURLSession, NSURLSessionDataTask, NSCachedURLResponse) -> NSCachedURLResponse?)?
+
+        // MARK: Delegate Methods
+
+        func URLSession(
+            session: NSURLSession,
+            dataTask: NSURLSessionDataTask,
+            didReceiveResponse response: NSURLResponse,
+            completionHandler: (NSURLSessionResponseDisposition -> Void))
+        {
+            var disposition: NSURLSessionResponseDisposition = .Allow
+
+            expectedContentLength = response.expectedContentLength
+
+            if let dataTaskDidReceiveResponse = dataTaskDidReceiveResponse {
+                disposition = dataTaskDidReceiveResponse(session, dataTask, response)
+            }
+
+            completionHandler(disposition)
+        }
+
+        func URLSession(
+            session: NSURLSession,
+            dataTask: NSURLSessionDataTask,
+            didBecomeDownloadTask downloadTask: NSURLSessionDownloadTask)
+        {
+            dataTaskDidBecomeDownloadTask?(session, dataTask, downloadTask)
+        }
+
+        func URLSession(session: NSURLSession, dataTask: NSURLSessionDataTask, didReceiveData data: NSData) {
+            if initialResponseTime == nil { initialResponseTime = CFAbsoluteTimeGetCurrent() }
+
+            if let dataTaskDidReceiveData = dataTaskDidReceiveData {
+                dataTaskDidReceiveData(session, dataTask, data)
+            } else {
+                if let dataStream = dataStream {
+                    dataStream(data: data)
+                } else {
+                    mutableData.appendData(data)
+                }
+
+                totalBytesReceived += data.length
+                let totalBytesExpected = dataTask.response?.expectedContentLength ?? NSURLSessionTransferSizeUnknown
+
+                progress.totalUnitCount = totalBytesExpected
+                progress.completedUnitCount = totalBytesReceived
+
+                dataProgress?(
+                    bytesReceived: Int64(data.length),
+                    totalBytesReceived: totalBytesReceived,
+                    totalBytesExpectedToReceive: totalBytesExpected
+                )
+            }
+        }
+
+        func URLSession(
+            session: NSURLSession,
+            dataTask: NSURLSessionDataTask,
+            willCacheResponse proposedResponse: NSCachedURLResponse,
+            completionHandler: ((NSCachedURLResponse?) -> Void))
+        {
+            var cachedResponse: NSCachedURLResponse? = proposedResponse
+
+            if let dataTaskWillCacheResponse = dataTaskWillCacheResponse {
+                cachedResponse = dataTaskWillCacheResponse(session, dataTask, proposedResponse)
+            }
+
+            completionHandler(cachedResponse)
+        }
+    }
+}
+
+// MARK: - CustomStringConvertible
+
+extension Request: CustomStringConvertible {
+
+    /**
+        The textual representation used when written to an output stream, which includes the HTTP method and URL, as 
+        well as the response status code if a response has been received.
+    */
+    public var description: String {
+        var components: [String] = []
+
+        if let HTTPMethod = request?.HTTPMethod {
+            components.append(HTTPMethod)
+        }
+
+        if let URLString = request?.URL?.absoluteString {
+            components.append(URLString)
+        }
+
+        if let response = response {
+            components.append("(\(response.statusCode))")
+        }
+
+        return components.joinWithSeparator(" ")
+    }
+}
+
+// MARK: - CustomDebugStringConvertible
+
+extension Request: CustomDebugStringConvertible {
+    func cURLRepresentation() -> String {
+        var components = ["$ curl -i"]
+
+        guard let
+            request = self.request,
+            URL = request.URL,
+            host = URL.host
+        else {
+            return "$ curl command could not be created"
+        }
+
+        if let HTTPMethod = request.HTTPMethod where HTTPMethod != "GET" {
+            components.append("-X \(HTTPMethod)")
+        }
+
+        if let credentialStorage = self.session.configuration.URLCredentialStorage {
+            let protectionSpace = NSURLProtectionSpace(
+                host: host,
+                port: URL.port?.integerValue ?? 0,
+                protocol: URL.scheme,
+                realm: host,
+                authenticationMethod: NSURLAuthenticationMethodHTTPBasic
+            )
+
+            if let credentials = credentialStorage.credentialsForProtectionSpace(protectionSpace)?.values {
+                for credential in credentials {
+                    components.append("-u \(credential.user!):\(credential.password!)")
+                }
+            } else {
+                if let credential = delegate.credential {
+                    components.append("-u \(credential.user!):\(credential.password!)")
+                }
+            }
+        }
+
+        if session.configuration.HTTPShouldSetCookies {
+            if let
+                cookieStorage = session.configuration.HTTPCookieStorage,
+                cookies = cookieStorage.cookiesForURL(URL) where !cookies.isEmpty
+            {
+                let string = cookies.reduce("") { $0 + "\($1.name)=\($1.value ?? String());" }
+                components.append("-b \"\(string.substringToIndex(string.endIndex.predecessor()))\"")
+            }
+        }
+
+        var headers: [NSObject: AnyObject] = [:]
+
+        if let additionalHeaders = session.configuration.HTTPAdditionalHeaders {
+            for (field, value) in additionalHeaders where field != "Cookie" {
+                headers[field] = value
+            }
+        }
+
+        if let headerFields = request.allHTTPHeaderFields {
+            for (field, value) in headerFields where field != "Cookie" {
+                headers[field] = value
+            }
+        }
+
+        for (field, value) in headers {
+            components.append("-H \"\(field): \(value)\"")
+        }
+
+        if let
+            HTTPBodyData = request.HTTPBody,
+            HTTPBody = String(data: HTTPBodyData, encoding: NSUTF8StringEncoding)
+        {
+            var escapedBody = HTTPBody.stringByReplacingOccurrencesOfString("\\\"", withString: "\\\\\"")
+            escapedBody = escapedBody.stringByReplacingOccurrencesOfString("\"", withString: "\\\"")
+
+            components.append("-d \"\(escapedBody)\"")
+        }
+
+        components.append("\"\(URL.absoluteString)\"")
+
+        return components.joinWithSeparator(" \\\n\t")
+    }
+
+    /// The textual representation used when written to an output stream, in the form of a cURL command.
+    public var debugDescription: String {
+        return cURLRepresentation()
+    }
+}