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// -*- Mode: ObjC; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
//
// This file is part of the LibreOffice project.
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
#import <dispatch/dispatch.h>
#import "Client.h"
#import "Server.h"
#import "CommandInterpreter.h"
#import "CommunicationManager.h"
#import "ServerListViewController.h"
#define CHARSET @"UTF-8"
@interface Client() <NSStreamDelegate>
@property (nonatomic, strong) NSInputStream* inputStream;
@property (nonatomic, strong) NSOutputStream* outputStream;
@property uint mPort;
@property (nonatomic, weak) CommandInterpreter* receiver;
@property (nonatomic, weak) CommunicationManager* comManager;
@property (nonatomic, strong) NSTimer* connectionTimeoutTimer;
@end
@implementation Client
@synthesize inputStream = _mInputStream;
@synthesize outputStream = _mOutputStream;
@synthesize pin = _mPin;
@synthesize name = _mName;
@synthesize server = _mServer;
@synthesize comManager = _mComManager;
@synthesize connected = _mReady;
@synthesize receiver = _receiver;
@synthesize connectionTimeoutTimer = _connectionTimeoutTimer;
dispatch_queue_t backgroundQueue;
NSLock *streamStatusLock;
- (id) initWithServer:(Server*)server
managedBy:(CommunicationManager*)manager
interpretedBy:(CommandInterpreter*)receiver
{
self = [self init];
streamStatusLock = [[NSLock alloc] init];
if (self)
{
self.connected = NO;
self.name = [[UIDevice currentDevice] name];
self.pin = [NSNumber numberWithInteger:[self getPin]];
self.server = server;
self.comManager = manager;
self.receiver = receiver;
self.mPort = 1599;
}
return self;
}
#pragma mark - Connection timeout handling
- (void)startConnectionTimeoutTimerwithInterval:(double) interval
{
[self stopConnectionTimeoutTimer]; // Or make sure any existing timer is stopped before this method is called
self.connectionTimeoutTimer = [NSTimer scheduledTimerWithTimeInterval:interval
target:self
selector:@selector(handleConnectionTimeout)
userInfo:nil
repeats:NO];
}
- (void)handleConnectionTimeout
{
if (self.comManager.state == CONNECTING){
NSLog(@"handleConnectionTimeout");
[self disconnect];
[[NSNotificationCenter defaultCenter]postNotificationName:@"connection.status.disconnected" object:nil];
}
}
- (void)dealloc
{
[self stopConnectionTimeoutTimer];
}
- (void)stopConnectionTimeoutTimer
{
if (self.connectionTimeoutTimer)
{
[self.connectionTimeoutTimer invalidate];
self.connectionTimeoutTimer = nil;
}
}
- (NSInteger) getPin
{
// Look up if there is already a pin code for this client.
NSUserDefaults * userDefaluts = [NSUserDefaults standardUserDefaults];
NSInteger newPin = [userDefaluts integerForKey:self.name];
// If not, generate one.
if (!newPin) {
newPin = arc4random() % 8999 + 1000;
[userDefaluts setInteger:newPin forKey:self.name];
}
return newPin;
}
- (void)streamOpenWithIp:(NSString *)ip withPortNumber:(uint)portNumber
{
NSLog(@"Connecting to %@:%u", ip, portNumber);
CFReadStreamRef readStream;
CFWriteStreamRef writeStream;
CFStreamCreatePairWithSocketToHost(kCFAllocatorDefault, (__bridge CFStringRef)ip, portNumber, &readStream, &writeStream);
if(readStream && writeStream)
{
CFReadStreamSetProperty(readStream, kCFStreamPropertyShouldCloseNativeSocket, kCFBooleanTrue);
CFWriteStreamSetProperty(writeStream, kCFStreamPropertyShouldCloseNativeSocket, kCFBooleanTrue);
//Setup mInputStream
self.inputStream = (__bridge NSInputStream *)readStream;
[self.inputStream setDelegate:self];
dispatch_async(dispatch_get_main_queue(), ^{
[self.inputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
});
[self.inputStream open];
//Setup outputstream
self.outputStream = (__bridge NSOutputStream *)writeStream;
[self.outputStream setDelegate:self];
dispatch_async(dispatch_get_main_queue(), ^{
[self.outputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
});
[self.outputStream open];
NSArray *temp = [[NSArray alloc]initWithObjects:@"LO_SERVER_CLIENT_PAIR\n", self.name, @"\n", self.pin, @"\n\n", nil];
NSString *command = [temp componentsJoinedByString:@""];
[self sendCommand:command];
}
}
- (void) sendCommand:(NSString *)aCommand
{
NSLog(@"Sending command %@", aCommand);
// UTF-8 as speficied in specification
NSData * data = [aCommand dataUsingEncoding:NSUTF8StringEncoding];
[self.outputStream write:(uint8_t *)[data bytes] maxLength:[data length]];
}
int count = 0;
- (void)stream:(NSStream *)stream handleEvent:(NSStreamEvent)eventCode {
switch(eventCode) {
case NSStreamEventOpenCompleted:{
[self stopConnectionTimeoutTimer];
[[NSNotificationCenter defaultCenter]postNotificationName:@"connection.status.connected" object:nil];
}
break;
case NSStreamEventErrorOccurred:{
@synchronized(self){
[self disconnect];
NSLog(@"Connection error occured");
if (!self.inputStream && !self.outputStream) {
[[NSNotificationCenter defaultCenter]postNotificationName:@"connection.status.disconnected" object:nil];
}
}
}
break;
case NSStreamEventHasBytesAvailable:
{
NSMutableData* data;
// NSLog(@"NSStreamEventHasBytesAvailable");
if(!data) {
data = [[NSMutableData alloc] init];
}
uint8_t buf[1024];
int len = 0;
NSString *str;
while (true) {
len = [(NSInputStream *)stream read:buf maxLength:1024];
if (len <= 0) {
[self disconnect];
[self connect];
break;
}
[data appendBytes:(const void *)buf length:len];
if (len < 1024) {
// Potentially the end of a command
str = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
if ([str hasSuffix:@"\n\n"]) {
// Finished current command
break;
}
}
}
backgroundQueue = dispatch_queue_create("com.libreoffice.iosremote", DISPATCH_QUEUE_CONCURRENT);
dispatch_async(backgroundQueue, ^(void) {
NSArray *commands = [str componentsSeparatedByString:@"\n"];
NSLog(@"Commands: %@", commands);
[self.receiver parse:commands];
});
data = nil;
str = nil;
} break;
default:
{
}
}
}
- (void) disconnect
{
if(self.inputStream == nil && self.outputStream == nil)
return;
[self stopConnectionTimeoutTimer];
if ([self.inputStream streamStatus] != NSStreamStatusClosed) {
[self.inputStream close];
} else
[self.inputStream removeFromRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
if ([self.outputStream streamStatus] != NSStreamStatusClosed) {
[self.outputStream close];
} else
[self.outputStream removeFromRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
self.inputStream = nil;
self.outputStream = nil;
self.connected = NO;
}
- (void) connect
{
[self startConnectionTimeoutTimerwithInterval:5.0];
backgroundQueue = dispatch_queue_create("com.libreoffice.iosremote", NULL);
dispatch_async(backgroundQueue, ^(void) {
[self streamOpenWithIp:self.server.serverAddress withPortNumber:self.mPort];
});
}
@end
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