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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
#if os(OSX) || os(iOS) || os(watchOS) || os(tvOS)
import Darwin
#elseif os(Linux) || os(FreeBSD) || os(PS4) || os(Android)
import Glibc
import Dispatch
#endif
import Foundation
import CoreFoundation
#if !swift(>=4.2)
// Swift 3/4 compatibility
fileprivate extension RunLoopMode {
static let `default` = defaultRunLoopMode
}
#endif
private struct Sys {
#if os(Linux)
static let read = Glibc.read
static let write = Glibc.write
static let close = Glibc.close
#else
static let read = Darwin.read
static let write = Darwin.write
static let close = Darwin.close
#endif
}
extension in_addr {
public init?(hostent: hostent?) {
guard let host = hostent, host.h_addr_list != nil, host.h_addr_list.pointee != nil else {
return nil
}
self.init()
memcpy(&self, host.h_addr_list.pointee!, Int(host.h_length))
}
}
#if os(Linux)
/// TCFSocketTransport currently unavailable
/// remove comments and build to see why/fix
/// currently CF[Read|Write]Stream's can't cast to [Input|Output]Streams which breaks thigns
#else
extension Stream.PropertyKey {
static let SSLPeerTrust = Stream.PropertyKey(kCFStreamPropertySSLPeerTrust as String)
}
/// TCFSocketTransport, uses CFSockets and (NS)Stream's
public class TCFSocketTransport: TStreamTransport {
public init?(hostname: String, port: Int, secure: Bool = false) {
var inputStream: InputStream
var outputStream: OutputStream
var readStream: Unmanaged<CFReadStream>?
var writeStream: Unmanaged<CFWriteStream>?
CFStreamCreatePairWithSocketToHost(kCFAllocatorDefault,
hostname as CFString,
UInt32(port),
&readStream,
&writeStream)
if let readStream = readStream?.takeRetainedValue(),
let writeStream = writeStream?.takeRetainedValue() {
CFReadStreamSetProperty(readStream, .shouldCloseNativeSocket, kCFBooleanTrue)
CFWriteStreamSetProperty(writeStream, .shouldCloseNativeSocket, kCFBooleanTrue)
if secure {
CFReadStreamSetProperty(readStream, .socketSecurityLevel, StreamSocketSecurityLevel.negotiatedSSL.rawValue as CFString)
CFWriteStreamSetProperty(writeStream, .socketSecurityLevel, StreamSocketSecurityLevel.negotiatedSSL.rawValue as CFString)
}
inputStream = readStream as InputStream
inputStream.schedule(in: .current, forMode: .default)
inputStream.open()
outputStream = writeStream as OutputStream
outputStream.schedule(in: .current, forMode: .default)
outputStream.open()
} else {
if readStream != nil {
readStream?.release()
}
if writeStream != nil {
writeStream?.release()
}
super.init(inputStream: nil, outputStream: nil)
return nil
}
super.init(inputStream: inputStream, outputStream: outputStream)
self.input?.delegate = self
self.output?.delegate = self
}
}
extension TCFSocketTransport: StreamDelegate { }
#endif
/// TSocketTransport, posix sockets. Supports IPv4 only for now
public class TSocketTransport : TTransport {
public var socketDescriptor: Int32
/// Initialize from an already set up socketDescriptor.
/// Expects socket thats already bound/connected (i.e. from listening)
///
/// - parameter socketDescriptor: posix socket descriptor (Int32)
public init(socketDescriptor: Int32) {
self.socketDescriptor = socketDescriptor
}
public convenience init(hostname: String, port: Int) throws {
guard let hp = gethostbyname(hostname.cString(using: .utf8)!)?.pointee,
let hostAddr = in_addr(hostent: hp) else {
throw TTransportError(error: .unknown, message: "Invalid address: \(hostname)")
}
#if os(Linux)
let sock = socket(AF_INET, Int32(SOCK_STREAM.rawValue), 0)
var addr = sockaddr_in(sin_family: sa_family_t(AF_INET),
sin_port: in_port_t(htons(UInt16(port))),
sin_addr: hostAddr,
sin_zero: (0, 0, 0, 0, 0, 0, 0, 0))
#else
let sock = socket(AF_INET, SOCK_STREAM, 0)
var addr = sockaddr_in(sin_len: UInt8(MemoryLayout<sockaddr_in>.size),
sin_family: sa_family_t(AF_INET),
sin_port: in_port_t(htons(UInt16(port))),
sin_addr: in_addr(s_addr: in_addr_t(0)),
sin_zero: (0, 0, 0, 0, 0, 0, 0, 0))
#endif
let addrPtr = withUnsafePointer(to: &addr){ UnsafePointer<sockaddr>(OpaquePointer($0)) }
let connected = connect(sock, addrPtr, UInt32(MemoryLayout<sockaddr_in>.size))
if connected != 0 {
throw TTransportError(error: .notOpen, message: "Error binding to host: \(hostname) \(port)")
}
self.init(socketDescriptor: sock)
}
deinit {
close()
}
public func readAll(size: Int) throws -> Data {
var out = Data()
while out.count < size {
out.append(try self.read(size: size))
}
return out
}
public func read(size: Int) throws -> Data {
var buff = Array<UInt8>.init(repeating: 0, count: size)
let readBytes = Sys.read(socketDescriptor, &buff, size)
return Data(buff[0..<readBytes])
}
public func write(data: Data) {
var bytesToWrite = data.count
var writeBuffer = data
while bytesToWrite > 0 {
let written = writeBuffer.withUnsafeBytes {
Sys.write(socketDescriptor, $0, writeBuffer.count)
}
writeBuffer = writeBuffer.subdata(in: written ..< writeBuffer.count)
bytesToWrite -= written
}
}
public func flush() throws {
// nothing to do
}
public func close() {
shutdown(socketDescriptor, Int32(SHUT_RDWR))
_ = Sys.close(socketDescriptor)
}
}
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