Fix the way Sequel Pro was constructing command line arguments for SSH (

#2273)

Source/SPSSHTunnel.m

@@ -317,7 +317,8 @@ - (void)launchTask:(id) dummy

	// Prepare to set up the arguments for the task
	taskArguments = [[NSMutableArray alloc] init];

#define TA(_name,_value) [taskArguments addObjectsFromArray:@[_name,_value]]
	
	// Enable verbose mode for message parsing
	[taskArguments addObject:@"-v"];

@@ -329,58 +330,58 @@ - (void)launchTask:(id) dummy
	if (connectionMuxingEnabled) {

		// Enable automatic connection muxing/sharing, for faster connections
		[taskArguments addObject:@"-o ControlMaster=auto"];
		TA(@"-o",@"ControlMaster=auto");

		// Set a custom control path to isolate connection sharing to Sequel Pro, to prevent picking up
		// existing masters without forwarding enabled and to isolate from interactive sessions.  Use a short
		// hashed path to aid length limit issues.
		unsigned char hashedPathResult[16];
		NSString *pathString = [NSString stringWithFormat:@"%@@%@:%ld", sshLogin?sshLogin:@"", sshHost, (long)(sshPort?sshPort:0)];
		CC_MD5([pathString UTF8String], (unsigned int)strlen([pathString UTF8String]), hashedPathResult);
		[taskArguments addObject:[NSString stringWithFormat:@"-o ControlPath=%@/SPSSH-%@", [NSFileManager temporaryDirectory], [[[NSData dataWithBytes:hashedPathResult length:16] dataToHexString] substringToIndex:8]]];
		NSString *hashedString = [[[NSData dataWithBytes:hashedPathResult length:16] dataToHexString] substringToIndex:8];
		TA(@"-o",([NSString stringWithFormat:@"ControlPath=%@/SPSSH-%@", [NSFileManager temporaryDirectory], hashedString]));
	} else {

		// Disable muxing if requested
		[taskArguments addObject:@"-S none"];
		[taskArguments addObject:@"-o ControlMaster=no"];
		TA(@"-S", @"none");
		TA(@"-o", @"ControlMaster=no");
	}

	// If the port forwarding fails, exit - as this is the primary use case for the instance
	[taskArguments addObject:@"-o ExitOnForwardFailure=yes"];
	TA(@"-o",@"ExitOnForwardFailure=yes");

	// Specify a connection timeout based on the preferences value
	[taskArguments addObject:[NSString stringWithFormat:@"-o ConnectTimeout=%ld", (long)connectionTimeout]];
	TA(@"-o",([NSString stringWithFormat:@"ConnectTimeout=%ld", (long)connectionTimeout]));

	// Allow three password prompts
	[taskArguments addObject:@"-o NumberOfPasswordPrompts=3"];
	TA(@"-o",@"NumberOfPasswordPrompts=3");

	// Specify an identity file if available
	if (identityFilePath) {
		[taskArguments addObject:@"-i"];
		[taskArguments addObject:identityFilePath];
		TA(@"-i", identityFilePath);
	}

	// If keepalive is set in the preferences, use the same value for the SSH tunnel
	if (useKeepAlive && keepAliveInterval) {
		[taskArguments addObject:@"-o TCPKeepAlive=no"];		
		[taskArguments addObject:[NSString stringWithFormat:@"-o ServerAliveInterval=%ld", (long)ceil(keepAliveInterval)]];		
		[taskArguments addObject:@"-o ServerAliveCountMax=1"];		
		TA(@"-o", @"TCPKeepAlive=no");
		TA(@"-o", ([NSString stringWithFormat:@"ServerAliveInterval=%ld", (long)ceil(keepAliveInterval)]));
		TA(@"-o", @"ServerAliveCountMax=1");
	}

	// Specify the port, host, and authentication details
	if (sshPort) {
		[taskArguments addObject:[NSString stringWithFormat:@"-p %ld", (long)sshPort]];
		TA(@"-p", ([NSString stringWithFormat:@"%ld", (long)sshPort]));
	}
	if ([sshLogin length]) {
		[taskArguments addObject:[NSString stringWithFormat:@"%@@%@", sshLogin, sshHost]];
	} else {
		[taskArguments addObject:sshHost];
	}
	if (useHostFallback) {
		[taskArguments addObject:[NSString stringWithFormat:@"-L %ld:127.0.0.1:%ld", (long)localPort, (long)remotePort]];
		[taskArguments addObject:[NSString stringWithFormat:@"-L %ld:%@:%ld", (long)localPortFallback, remoteHost, (long)remotePort]];
		TA(@"-L",([NSString stringWithFormat:@"%ld:127.0.0.1:%ld", (long)localPort, (long)remotePort]));
		TA(@"-L",([NSString stringWithFormat:@"%ld:%@:%ld", (long)localPortFallback, remoteHost, (long)remotePort]));
	} else {
		[taskArguments addObject:[NSString stringWithFormat:@"-L %ld:%@:%ld", (long)localPort, remoteHost, (long)remotePort]];
		TA(@"-L", ([NSString stringWithFormat:@"%ld:%@:%ld", (long)localPort, remoteHost, (long)remotePort]));
	}

	[task setArguments:taskArguments];
@@ -451,6 +452,7 @@ - (void)launchTask:(id) dummy
	[[NSRunLoop currentRunLoop] runUntilDate:[NSDate dateWithTimeIntervalSinceNow:1.0]];

	SPClear(taskEnvironment);
#undef TA
	SPClear(taskArguments);

	[pool release];