IOSDeviceLib.cpp

#include <bitset>
#include <iostream>
#include <string>
#include <fstream>
#include <sstream>
#include <mutex>
#include <thread>
#include <memory>
#include <algorithm>
#include <sys/stat.h>

#include "json.hpp"
#include "PlistCpp/Plist.hpp"
#include "PlistCpp/PlistDate.hpp"
#include "PlistCpp/include/boost/any.hpp"
#include "FileHelper.h"
#include "StringHelper.h"
#include "Declarations.h"
#include "GDBHelper.h"
#include "Constants.h"
#include "Printing.h"
#include "CommonFunctions.h"
#include "ServerHelper.h"

#ifdef _WIN32
#pragma region Dll_Variable_Definitions

device_notification_subscribe_ptr __AMDeviceNotificationSubscribe;
HINSTANCE mobile_device_dll;
HINSTANCE core_foundation_dll;

device_copy_device_identifier __AMDeviceCopyDeviceIdentifier;
device_copy_value __AMDeviceCopyValue;
device_start_service __AMDeviceStartService;
device_uninstall_application __AMDeviceUninstallApplication;
device_secure_operation_with_bundle_id __AMDeviceSecureUninstallApplication;
device_connection_operation __AMDeviceStartSession;
device_connection_operation __AMDeviceStopSession;
device_connection_operation __AMDeviceConnect;
device_connection_operation __AMDeviceDisconnect;
device_connection_operation __AMDeviceIsPaired;
device_connection_operation __AMDevicePair;
device_connection_operation __AMDeviceValidatePairing;
device_secure_operation_with_path __AMDeviceSecureTransferPath;
device_secure_operation_with_path __AMDeviceSecureInstallApplication;
device_start_house_arrest __AMDeviceStartHouseArrestService;
device_lookup_applications __AMDeviceLookupApplications;
usb_mux_connect_by_port __USBMuxConnectByPort;
device_connection_operation __AMDeviceGetConnectionID;
device_connection_operation __AMDeviceGetInterfaceType;

cfstring_get_c_string_ptr __CFStringGetCStringPtr;
cfstring_get_c_string __CFStringGetCString;
cf_get_type_id __CFGetTypeID;
cf_get_concrete_type_id __CFStringGetTypeID;
cf_get_concrete_type_id __CFDictionaryGetTypeID;
cfdictionary_get_count __CFDictionaryGetCount;
cfdictionary_get_keys_and_values __CFDictionaryGetKeysAndValues;
cfstring_create_with_cstring __CFStringCreateWithCString;
cfurl_create_with_string __CFURLCreateWithString;
cfdictionary_create __CFDictionaryCreate;
cfrelease __CFRelease;

afc_connection_open __AFCConnectionOpen;
afc_connection_close __AFCConnectionClose;
afc_file_info_open __AFCFileInfoOpen;
afc_directory_read __AFCDirectoryRead;
afc_directory_open __AFCDirectoryOpen;
afc_directory_close __AFCDirectoryClose;
afc_directory_create __AFCDirectoryCreate;
afc_remove_path __AFCRemovePath;
afc_fileref_open __AFCFileRefOpen;
afc_fileref_read __AFCFileRefRead;
afc_get_device_info_key __AFCGetDeviceInfoKey;
afc_fileref_write __AFCFileRefWrite;
afc_fileref_close __AFCFileRefClose;

#pragma endregion Dll_Variable_Definitions
#endif // _WIN32

using json = nlohmann::json;

int __result;
std::map<std::string, DeviceData> devices;

std::string get_dirname(std::string& path)
{
	size_t found;
	found = path.find_last_of(kPathSeparators);
	return path.substr(0, found);
}

template<typename T> std::string windows_path_to_unix(T& path)
{
	std::string path_str(path);
	replace_all(path_str, "\\", "/");
	return path_str;
}

std::string get_cstring_from_cfstring(CFStringRef cfstring)
{
	const char * result_attempt = CFStringGetCStringPtr(cfstring, kCFStringEncodingUTF8);
	char cfstring_buffer[2000];
	if (result_attempt == NULL)
	{
		if (CFStringGetCString(cfstring, cfstring_buffer, 2000, kCFStringEncodingUTF8))
		{
			return std::string(cfstring_buffer);
		}
	}

	return std::string(result_attempt);
}

CFStringRef create_CFString(const char* str)
{
	return CFStringCreateWithCString(NULL, str, kCFStringEncodingUTF8);
}

std::mutex start_session_mutex;
int start_session(std::string& device_identifier)
{
	start_session_mutex.lock();
	if (devices[device_identifier].sessions < 1)
	{
		const DeviceInfo* device_info = devices[device_identifier].device_info;
		UNLOCK_MUTEX_AND_RETURN_IF_FAILED_RESULT(AMDeviceConnect(device_info), start_session_mutex);
		if (!AMDeviceIsPaired(device_info))
		{
			UNLOCK_MUTEX_AND_RETURN_IF_FAILED_RESULT(AMDevicePair(device_info), start_session_mutex);
		}

		UNLOCK_MUTEX_AND_RETURN_IF_FAILED_RESULT(AMDeviceValidatePairing(device_info), start_session_mutex);
		UNLOCK_MUTEX_AND_RETURN_IF_FAILED_RESULT(AMDeviceStartSession(device_info), start_session_mutex);
	}

	++devices[device_identifier].sessions;
	start_session_mutex.unlock();
	return 0;
}

std::mutex stop_session_mutex;
void stop_session(std::string& device_identifier)
{
	stop_session_mutex.lock();
	if (--devices[device_identifier].sessions < 1)
	{
		const DeviceInfo *device_info = devices[device_identifier].device_info;
		AMDeviceStopSession(device_info);
		AMDeviceDisconnect(device_info);
	}

	stop_session_mutex.unlock();
}

std::string get_device_property_value(std::string& device_identifier, const char* property_name)
{
	const DeviceInfo* device_info = devices[device_identifier].device_info;
	std::string result;
	if (!start_session(device_identifier))
	{
		CFStringRef cfstring = create_CFString(property_name);
		result = get_cstring_from_cfstring(AMDeviceCopyValue(device_info, NULL, cfstring));
		CFRelease(cfstring);
	}

	stop_session(device_identifier);
	return result;
}

const char *get_device_status(std::string device_identifier)
{
	const char *result;
	if (start_session(device_identifier))
	{
		result = kUnreachableStatus;
	}
	else
	{
		result = kConnectedStatus;
	}

	stop_session(device_identifier);
	return result;
}

void erase_safe(std::map<const char*, HANDLE>& m, const char* key)
{
	if (m.count(key))
	{
		m.erase(key);
	}
}

void cleanup_file_resources(const std::string& device_identifier, const std::string& application_identifier)
{
	if (!devices.count(device_identifier))
	{
		return;
	}

	if (devices[device_identifier].apps_cache[application_identifier].afc_connection)
	{
		afc_connection* afc_connection_to_close = devices[device_identifier].apps_cache[application_identifier].afc_connection;
		AFCConnectionClose(afc_connection_to_close);
		devices[device_identifier].apps_cache.erase(application_identifier);
	}

	if (devices[device_identifier].services.count(kHouseArrest))
	{
		devices[device_identifier].services.erase(kHouseArrest);
	}
}

void cleanup_file_resources(const std::string& device_identifier)
{
	if (!devices.count(device_identifier))
	{
		return;
	}

	if (devices[device_identifier].apps_cache.size())
	{
		std::map<std::string, ApplicationCache> apps_cache_clone = devices[device_identifier].apps_cache;
		for (auto const& key_value_pair : apps_cache_clone)
		{
			cleanup_file_resources(device_identifier, key_value_pair.first);
		}

		devices[device_identifier].apps_cache.clear();
	}
}

void get_device_properties(std::string device_identifier, json &result)
{
	result["status"] = get_device_status(device_identifier);
	result["productType"] = get_device_property_value(device_identifier, "ProductType");
	result["deviceName"] = get_device_property_value(device_identifier, "DeviceName");
	result["productVersion"] = get_device_property_value(device_identifier, kProductVersion);
	result["deviceColor"] = get_device_property_value(device_identifier, "DeviceColor");
}

inline bool has_complete_status(std::map<std::string, boost::any>& dict)
{
	return boost::any_cast<std::string>(dict[kStatusKey]) == kComplete;
}

void device_notification_callback(const DevicePointer* device_ptr)
{
	std::string device_identifier = get_cstring_from_cfstring(AMDeviceCopyDeviceIdentifier(device_ptr->device_info));
	json result;
	result[kDeviceId] = device_identifier;
	switch (device_ptr->msg)
	{
		case kADNCIMessageConnected:
		{
			devices[device_identifier] = { device_ptr->device_info, nullptr };
			result[kEventString] = kDeviceFound;
			get_device_properties(device_identifier, result);
			break;
		}
		case kADNCIMessageDisconnected:
		{
			if (devices.count(device_identifier))
			{
				if (devices[device_identifier].apps_cache.size())
				{
					cleanup_file_resources(device_identifier);
				}

				devices.erase(device_identifier);
			}
			result[kEventString] = kDeviceLost;
			break;
		}
		case kADNCIMessageUnknown:
		{
			result[kEventString] = kDeviceUnknown;
			break;
		}
		case kADNCIMessageTrusted:
		{
			devices[device_identifier] = { device_ptr->device_info, nullptr };
			result[kEventString] = kDeviceTrusted;
			get_device_properties(device_identifier, result);
			break;
		}
	}

	print(result);
}

#ifdef _WIN32
void add_dll_paths_to_environment()
{
	std::string str(std::getenv(kPathUpperCase));
	str = str.append(";C:\\Program Files\\Common Files\\Apple\\Apple Application Support;C:\\Program Files\\Common Files\\Apple\\Mobile Device Support;");
	str = str.append(";C:\\Program Files (x86)\\Common Files\\Apple\\Apple Application Support;C:\\Program Files (x86)\\Common Files\\Apple\\Mobile Device Support;");

	SetEnvironmentVariable(kPathUpperCase, str.c_str());
}

int load_dlls()
{
	add_dll_paths_to_environment();
	mobile_device_dll = LoadLibrary("MobileDevice.dll");
	if (!mobile_device_dll)
	{
		print_error("Could not load MobileDevice.dll", kNullMessageId, kNullMessageId);
		return 1;
	}

	core_foundation_dll = LoadLibrary("CoreFoundation.dll");
	if (!core_foundation_dll)
	{
		print_error("Could not load CoreFoundation.dll", kNullMessageId, kNullMessageId);
		return 1;
	}

	return 0;
}

#endif // _WIN32

int subscribe_for_notifications()
{
	HANDLE notify_function = nullptr;
	int result = AMDeviceNotificationSubscribe(device_notification_callback, 0, 0, 0, &notify_function);
	if (result)
	{
		print_error("Could not attach notification callback", kNullMessageId, kNullMessageId);
	}

	return result;
}

void start_run_loop()
{
	int subscribe_for_notifications_result = subscribe_for_notifications();

	if (subscribe_for_notifications_result)
	{
		return;
	}

#ifdef _WIN32
	run_loop_ptr CFRunLoopRun = (run_loop_ptr)GetProcAddress(core_foundation_dll, "CFRunLoopRun");
#endif
	CFRunLoopRun();
}

std::mutex start_service_mutex;
HANDLE start_service(std::string device_identifier, const char* service_name, std::string method_id, bool should_log_error, bool skip_cache)
{
	start_service_mutex.lock();
	if (!devices.count(device_identifier))
	{
		if (should_log_error)
			print_error("Device not found", device_identifier, method_id, kAMDNotFoundError);

		start_service_mutex.unlock();
		return NULL;
	}

	if (devices[device_identifier].services.count(service_name))
	{
		start_service_mutex.unlock();
		return devices[device_identifier].services[service_name];
	}

	HANDLE socket = nullptr;
	PRINT_ERROR_AND_RETURN_VALUE_IF_FAILED_RESULT(start_session(device_identifier), "Could not start device session", device_identifier, method_id, NULL);
	CFStringRef cf_service_name = create_CFString(service_name);
	unsigned result = AMDeviceStartService(devices[device_identifier].device_info, cf_service_name, &socket, NULL);
	stop_session(device_identifier);
	CFRelease(cf_service_name);
	if (result)
	{
		std::string message("Could not start service ");
		message += service_name;
		if (should_log_error)
			print_error(message.c_str(), device_identifier, method_id, result);

		start_service_mutex.unlock();
		return NULL;
	}

	if (!skip_cache) {
		devices[device_identifier].services[service_name] = socket;
	}

	start_service_mutex.unlock();
	return socket;
}

// We do not use this method.
// When we used it to upload files to the live ION we had problems writing them on the root of the ION.
// The method is not deleted because it works for some applications and we can use it in the future for something.
#if 0
HANDLE start_house_arrest(std::string device_identifier, const char* application_identifier, std::string method_id)
{
	if (!devices.count(device_identifier))
	{
		print_error("Device not found", device_identifier, method_id, kAMDNotFoundError);
		return NULL;
	}

	if (devices[device_identifier].services.count(kHouseArrest))
	{
		return devices[device_identifier].services[kHouseArrest];
	}

	HANDLE houseFd = nullptr;
	start_session(device_identifier);
	CFStringRef cf_application_identifier = create_CFString(application_identifier);
	unsigned result = AMDeviceStartHouseArrestService(devices[device_identifier].device_info, cf_application_identifier, 0, &houseFd, 0);
	CFRelease(cf_application_identifier);
	stop_session(device_identifier);

	if (result)
	{
		std::string message("Could not start house arrest for application ");
		message += application_identifier;
		print_error(message.c_str(), device_identifier, method_id, result);
		return NULL;
	}

	devices[device_identifier].services[kHouseArrest] = houseFd;
	return houseFd;
}
#endif

HANDLE start_debug_server(std::string device_identifier, std::string ddi, std::string method_id)
{
	HANDLE gdb = start_service(device_identifier, kDebugServer, method_id, false);
	if (!gdb && mount_image(device_identifier, ddi, method_id))
	{
		gdb = start_service(device_identifier, kDebugServer, method_id);
	}

	return gdb;
}

bool start_afc_client(std::string& device_identifier, std::string& destination, const char* application_identifier, HANDLE house_arrest_fd, std::string& method_id)
{
	std::string command_name = kVendDocumentsCommandName;
	if (!contains(destination, kDocumentsFolder))
	{
		command_name = kVendContainerCommandName;
	}

	std::stringstream xml_command;
	xml_command << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
		"<!DOCTYPE plist PUBLIC \"-//Apple//DTD PLIST 1.0//EN\" \"http://www.apple.com/DTDs/PropertyList-1.0.dtd\">"
		"<plist version=\"1.0\">"
		"<dict>"
			"<key>Command</key>"
			"<string>" + command_name + "</string>"
			"<key>Identifier</key>"
			"<string>" + std::string(application_identifier) + "</string>"
		"</dict>"
		"</plist>";

	int bytes_sent = send_message(xml_command.str().c_str(), (SOCKET)house_arrest_fd);
	std::map<std::string, boost::any> dict = receive_message((SOCKET)house_arrest_fd);

	PRINT_ERROR_AND_RETURN_VALUE_IF_FAILED_RESULT(dict.count(kErrorKey), boost::any_cast<std::string>(dict[kErrorKey]).c_str(), device_identifier, method_id, false);

	return true;
}

afc_connection *get_afc_connection(std::string& device_identifier, const char* application_identifier, std::string& root_path, std::string& method_id)
{
	if (devices.count(device_identifier) && devices[device_identifier].apps_cache[application_identifier].afc_connection)
	{
		return devices[device_identifier].apps_cache[application_identifier].afc_connection;
	}

	HANDLE house_fd = start_service(device_identifier, kHouseArrest, method_id);
	if (!house_fd || !start_afc_client(device_identifier, root_path, application_identifier, house_fd, method_id))
	{
		return NULL;
	}

	afc_connection* afc_conn_p = nullptr;
	PRINT_ERROR_AND_RETURN_VALUE_IF_FAILED_RESULT(AFCConnectionOpen(house_fd, 0, &afc_conn_p), "Could not open afc connection", device_identifier, method_id, NULL);
	devices[device_identifier].apps_cache[application_identifier].afc_connection = afc_conn_p;
	return afc_conn_p;
}

void uninstall_application(std::string application_identifier, std::string device_identifier, std::string method_id)
{
	if (!devices.count(device_identifier))
	{
		print_error("Device not found", device_identifier, method_id, kAMDNotFoundError);
		return;
	}

	HANDLE socket = start_service(device_identifier, kInstallationProxy, method_id);
	if (!socket)
	{
		return;
	}

	CFStringRef appid_cfstring = create_CFString(application_identifier.c_str());
	unsigned result = AMDeviceUninstallApplication(socket, appid_cfstring, NULL, [] {}, NULL);
	CFRelease(appid_cfstring);

	if (result)
	{
		print_error("Could not uninstall application", device_identifier, method_id, result);
	}
	else
	{
		print(json({{ kResponse, "Successfully uninstalled application" }, { kId, method_id }, { kDeviceId, device_identifier }}));
		// AppleFileConnection and HouseArrest deal with the files on an application so they have to be removed when uninstalling the application
		cleanup_file_resources(device_identifier, application_identifier);
	}
}

void install_application(std::string install_path, std::string device_identifier, std::string method_id)
{
	if (!devices.count(device_identifier))
	{
		print_error("Device not found", device_identifier, method_id, kAMDNotFoundError);
		return;
	}

#ifdef _WIN32
	if (install_path.compare(0, kFilePrefix.size(), kFilePrefix))
	{
		install_path = kFilePrefix + install_path;
	}
	install_path = windows_path_to_unix(install_path);
	install_path = url_encode_without_forward_slash_and_colon(install_path);
#endif
	int session_result = start_session(device_identifier);
	if (session_result) {
		print_error("Could not start device session", device_identifier, method_id, session_result);
		return;
	}
	CFStringRef path = create_CFString(install_path.c_str());
	CFURLRef local_app_url =
#ifdef _WIN32
		CFURLCreateWithString(NULL, path, NULL);
#else
		CFURLCreateWithFileSystemPath(NULL, path, kCFURLPOSIXPathStyle, true);
#endif
	CFRelease(path);
	if (!local_app_url)
	{
		stop_session(device_identifier);
		print_error("Could not parse application path", device_identifier, method_id, kAMDAPIInternalError);
		return;
	}

	CFStringRef cf_package_type = create_CFString("PackageType");
	CFStringRef cf_developer = create_CFString("Developer");
	const void *keys_arr[] = { cf_package_type };
	const void *values_arr[] = { cf_developer };
	CFDictionaryRef options = CFDictionaryCreate(NULL, keys_arr, values_arr, 1, NULL, NULL);

	unsigned transfer_result = AMDeviceSecureTransferPath(0, devices[device_identifier].device_info, local_app_url, options, NULL, 0);
	stop_session(device_identifier);
	if (transfer_result)
	{
		print_error("Could not transfer application", device_identifier, method_id, transfer_result);
		return;
	}

	session_result = start_session(device_identifier);
	if (session_result) {
		print_error("Could not start device session", device_identifier, method_id, session_result);
		return;
	}

	unsigned install_result = AMDeviceSecureInstallApplication(0, devices[device_identifier].device_info, local_app_url, options, NULL, 0);
	CFRelease(cf_package_type);
	CFRelease(cf_developer);
	stop_session(device_identifier);

	if (install_result)
	{
		print_error("Could not install application", device_identifier, method_id, install_result);
		return;
	}

	print(json({ { kResponse, "Successfully installed application" }, { kId, method_id }, {kDeviceId, device_identifier}}));
	// In case this is a REinstall we need to invalidate cached file resources
	cleanup_file_resources(device_identifier);
}

void perform_detached_operation(void(*operation)(std::string, std::string), std::string arg, std::string method_id)
{
	std::thread([operation, arg, method_id]() { operation(arg, method_id);  }).detach();
}

void perform_detached_operation(void(*operation)(std::string, std::string, std::string), json method_args, std::string method_id)
{
	std::string first_arg = method_args[0].get<std::string>();
	std::vector<std::string> device_identifiers = method_args[1].get<std::vector<std::string>>();
	for (std::string &device_identifier : device_identifiers)
		std::thread([operation, first_arg, device_identifier, method_id]() { operation(first_arg, device_identifier, method_id);  }).detach();
}

void read_dir(afc_connection* afc_conn_p, const char* dir, json &files, std::stringstream &errors, std::string method_id, std::string device_identifier)
{
	char *dir_ent;
	files.push_back(dir);

	afc_dictionary afc_dict;
	afc_dictionary* afc_dict_p = &afc_dict;
	unsigned afc_file_info_open_result = AFCFileInfoOpen(afc_conn_p, dir, &afc_dict_p);
	if (afc_file_info_open_result)
	{
		errors << "Could not open file info for file: ";
		errors << dir;
		errors << '\n';

		return;
	}

	afc_directory afc_dir;
	afc_directory* afc_dir_p = &afc_dir;
	unsigned err = AFCDirectoryOpen(afc_conn_p, dir, &afc_dir_p);

	if (err != 0)
	{
		// Couldn't open dir - was probably a file
		return;
	}

	while (true)
	{
		err = AFCDirectoryRead(afc_conn_p, afc_dir_p, &dir_ent);

		if (!dir_ent)
			break;

		if (strcmp(dir_ent, ".") == 0 || strcmp(dir_ent, "..") == 0)
			continue;

		char* dir_joined = (char*)malloc(strlen(dir) + strlen(dir_ent) + 2);
		strcpy(dir_joined, dir);
		if (dir_joined[strlen(dir) - 1] != '/')
			strcat(dir_joined, "/");
		strcat(dir_joined, dir_ent);
		read_dir(afc_conn_p, dir_joined, files, errors, method_id, device_identifier);
		free(dir_joined);
	}

	unsigned afc_directory_close_result = AFCDirectoryClose(afc_conn_p, afc_dir_p);
	if (afc_directory_close_result)
	{
		errors << "Could not close directory: ";
		errors << dir_ent;
		errors << '\n';
	}
}

void list_files(std::string device_identifier, const char *application_identifier, const char *device_path, std::string method_id)
{
    std::string device_root(device_path);
    afc_connection* afc_conn_p = get_afc_connection(device_identifier, application_identifier, device_root, method_id);
	if (!afc_conn_p)
	{
		print_error("Could not establish AFC Connection", device_identifier, method_id);
		return;
	}

	json files;
	std::stringstream errors;

	std::string device_path_str = windows_path_to_unix(device_path);
	read_dir(afc_conn_p, device_path_str.c_str(), files, errors, method_id, device_identifier);
	if (!files.empty())
	{
		print(json({{ kResponse, files }, { kId, method_id }, { kDeviceId, device_identifier }}));
	}
	if (errors.rdbuf()->in_avail() != 0)
	{
		print_error(errors.str().c_str(), device_identifier, method_id, kAFCCustomError);
	}
}

bool ensure_device_path_exists(std::string &device_path, afc_connection *connection)
{
	std::vector<std::string> directories = split(device_path, kUnixPathSeparator);
	std::string curent_device_path("");
	for (std::string &directory_path : directories)
	{
		if (!directory_path.empty())
		{
			curent_device_path += kUnixPathSeparator;
			curent_device_path += directory_path;
			if (AFCDirectoryCreate(connection, curent_device_path.c_str()))
				return false;
		}
	}

	return true;
}

void upload_file(std::string device_identifier, const char *application_identifier, const std::vector<FileUploadData>& files, std::string method_id) {
	json success_json = json({ { kResponse, "Successfully uploaded files" },{ kId, method_id },{ kDeviceId, device_identifier } });
	if (!files.size())
	{
		print(success_json);
		return;
	}

	std::string afc_destination_str = windows_path_to_unix(files[0].destination);
	afc_connection* afc_conn_p = get_afc_connection(device_identifier, application_identifier, afc_destination_str, method_id);
	if (!afc_conn_p)
	{
		// If there is no opened afc connection the get_afc_connection will print the error for the operation.
		return;
	}

	// We need to set the size of errors here because we need to access the elements by index.
	// If we don't access them by index and use push_back from multiple threads, some of them will try to push at the same memory.
	// The result of this will be an exception.
	std::vector<std::string> errors(files.size());
	std::vector<std::thread> file_upload_threads;
	// We're only ever going to insert kDeviceUploadFilesBatchSize elements
	file_upload_threads.reserve(kDeviceUploadFilesBatchSize);

	// Launching a separate thread for each file puts a strain on the OS' memory
	// That's why we launch batches of threads - kDeviceUploadFilesBatchSize each
	size_t batch_end = files.size() / kDeviceUploadFilesBatchSize + 1;
	for (size_t batch_index = 0; batch_index < batch_end; ++batch_index)
	{
		size_t start = batch_index * kDeviceUploadFilesBatchSize;
		size_t end = (std::min)((batch_index + 1 ) * kDeviceUploadFilesBatchSize, files.size());

		for (size_t i = start; i < end; ++i)
		{
			FileUploadData current_file_data = files[i];
			file_upload_threads.emplace_back([=, &errors]() -> void
			{
				afc_file_ref file_ref;
				std::string source = current_file_data.source;
				std::string destination = current_file_data.destination;
				FileInfo file_info = get_file_info(source, true);

				if (file_info.size >= 0)
				{
					std::string dir_name = get_dirname(destination);
					if (ensure_device_path_exists(dir_name, afc_conn_p))
					{
						std::stringstream error_message;
						AFCRemovePath(afc_conn_p, destination.c_str());
						error_message << "Could not open file " << destination << " for writing";
						if (AFCFileRefOpen(afc_conn_p, destination.c_str(), kAFCFileModeWrite, &file_ref))
						{
							errors[i] = error_message.str();
							return;
						}

						error_message.str("");
						error_message << "Could not write to file: " << destination;

						if (AFCFileRefWrite(afc_conn_p, file_ref, &file_info.contents[0], file_info.size))
						{
							errors[i] = error_message.str();
							return;
						}

						error_message.str("");
						error_message << "Could not close file reference: " << destination;
						if (AFCFileRefClose(afc_conn_p, file_ref))
						{
							errors[i] = error_message.str();
							return;
						}
					}
					else
					{
						std::string message("Could not create device path for file: ");
						message += source;
						errors.push_back(message);
					}
				}
				else
				{
					std::string message("Could not open file: ");
					message += source;
					errors.push_back(message);
				}
			});
		}

		for (std::thread& file_upload_thread : file_upload_threads)
		{
			file_upload_thread.join();
		}

		// After a batch is completed we need to empty file_upload_threads so that the new batch may take the old one's place
		file_upload_threads.clear();
	}

	std::vector<std::string> filtered_errors;
	std::copy_if(std::begin(errors), std::end(errors), std::back_inserter(filtered_errors), [](std::string e) { return e.size() != 0; });

	if (!filtered_errors.size())
	{
		print(success_json);
	}
	else
	{
		print_errors(filtered_errors, device_identifier, method_id, kAMDAPIInternalError);
	}
}

void delete_file(std::string device_identifier, const char *application_identifier, const char *destination, std::string method_id) {
	std::string destination_str = windows_path_to_unix(destination);
	afc_connection* afc_conn_p = get_afc_connection(device_identifier, application_identifier, destination_str, method_id);
	if (!afc_conn_p)
	{
		return;
	}

	destination = destination_str.c_str();
	std::stringstream error_message;
	error_message << "Could not remove file " << destination;
	PRINT_ERROR_AND_RETURN_IF_FAILED_RESULT(AFCRemovePath(afc_conn_p, destination), error_message.str().c_str(), device_identifier, method_id);
	print(json({{ kResponse, "Successfully removed file" },{ kId, method_id },{ kDeviceId, device_identifier } }));
}

std::unique_ptr<afc_file> get_afc_file(std::string device_identifier, const char *application_identifier, const char *destination, std::string method_id){
	afc_file_ref file_ref;
	std::string destination_str = windows_path_to_unix(destination);
	afc_connection* afc_conn_p = get_afc_connection(device_identifier, application_identifier, destination_str, method_id);
	if (!afc_conn_p)
	{
		return NULL;
	}

	destination = destination_str.c_str();
	std::stringstream error_message;
	error_message << "Could not open file " << destination << " for reading";
	PRINT_ERROR_AND_RETURN_VALUE_IF_FAILED_RESULT(AFCFileRefOpen(afc_conn_p, destination, kAFCFileModeRead, &file_ref), error_message.str().c_str(), device_identifier, method_id, NULL);
	std::unique_ptr<afc_file> result(new afc_file{ file_ref, afc_conn_p });
	return result;
}

void read_file(std::string device_identifier, const char *application_identifier, const char *path, std::string method_id, const char *destination = nullptr) {
	std::unique_ptr<afc_file> file = get_afc_file(device_identifier, application_identifier, path, method_id);
	if (!file)
	{
		return;
	}

	size_t read_size = kDeviceFileBytesToRead;
	std::string result;
	char *buf;
	if (destination)
	{
		// Write the contents of the source file to the destination
		std::ofstream ostream;
		ostream.open(destination);
		do
		{
			buf = new char[kDeviceFileBytesToRead];
			AFCFileRefRead(file->afc_conn_p, file->file_ref, buf, &read_size);
			ostream.write(buf, read_size);
			free(buf);
		} while (read_size == kDeviceFileBytesToRead);

		ostream.close();
		result = std::string("File written successfully!");
	}
	else
	{
		// Pipe the contents of the file to the stdout
		std::vector<char> file_contents;
		do
		{
			buf = new char[kDeviceFileBytesToRead];
			AFCFileRefRead(file->afc_conn_p, file->file_ref, buf, &read_size);
			file_contents.insert(file_contents.end(), buf, buf + read_size);
			free(buf);
		} while (read_size == kDeviceFileBytesToRead);

		result = std::string(file_contents.begin(), file_contents.end());
	}

	PRINT_ERROR_AND_RETURN_IF_FAILED_RESULT(AFCFileRefClose(file->afc_conn_p, file->file_ref), "Could not close file reference", device_identifier, method_id);
	print(json({{ kResponse, result },{ kId, method_id },{ kDeviceId, device_identifier } }));
}

void get_application_infos(std::string device_identifier, std::string method_id)
{
	HANDLE socket = start_service(device_identifier, kInstallationProxy, method_id);
	if (!socket)
	{
		return;
	}

	const char *xml_command = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
							"<!DOCTYPE plist PUBLIC \"-//Apple//DTD PLIST 1.0//EN\" \"http://www.apple.com/DTDs/PropertyList-1.0.dtd\">"
							"<plist version=\"1.0\">"
								"<dict>"
									"<key>Command</key>"
									"<string>Browse</string>"
									"<key>ClientOptions</key>"
									"<dict>"
										"<key>ApplicationType</key>"
										"<string>User</string>"
										"<key>ReturnAttributes</key>"
										"<array>"
											"<string>CFBundleIdentifier</string>"
											"<string>IceniumLiveSyncEnabled</string>"
											"<string>configuration</string>"
										"</array>"
									"</dict>"
								"</dict>"
							"</plist>";

	int bytes_sent = send_message(xml_command, (SOCKET)socket);

	std::vector<json> livesync_app_infos;
	while (true)
	{
		std::map<std::string, boost::any> dict = receive_message((SOCKET)socket);
		PRINT_ERROR_AND_RETURN_IF_FAILED_RESULT(dict.count(kErrorKey), boost::any_cast<std::string>(dict[kErrorKey]).c_str(), device_identifier, method_id);
		if (dict.empty() || (dict.count(kStatusKey) && has_complete_status(dict)))
		{
			break;
		}

		// Due to a concurrency issue we may receive an answer that we're not expecting here
		// We actually receive and answer from installation_proxy here and we expect it to contain information about currently installed applications
		// However if the installation_proxy service is being used on the device by another process or thread regardless of whether by us or not we may receive other answers too
		// Then we may receive the messages from said usage instead of the expected messages containing information about installed applications.
		// NB! These messages may be lost for the other user of installation_proxy! Be advised.
		if (dict.count(kCurrentApplicationsKey)) {
			std::vector<boost::any> current_list = boost::any_cast<std::vector<boost::any>>(dict[kCurrentApplicationsKey]);
			for (boost::any &list : current_list)
			{
				std::map<std::string, boost::any> app_info = boost::any_cast<std::map<std::string, boost::any>>(list);
				json current_info = {
					{ "IceniumLiveSyncEnabled", app_info.count("IceniumLiveSyncEnabled") && boost::any_cast<bool>(app_info["IceniumLiveSyncEnabled"]) },
					{ "CFBundleIdentifier", app_info.count("CFBundleIdentifier") ? boost::any_cast<std::string>(app_info["CFBundleIdentifier"]) : "" },
					{ "configuration", app_info.count("configuration") ? boost::any_cast<std::string>(app_info["configuration"]) : ""},
				};
				livesync_app_infos.push_back(current_info);
			}
		}
	}

	print(json({ { kResponse, livesync_app_infos }, { kId, method_id },{ kDeviceId, device_identifier } }));
}

std::map<std::string, std::string> parse_cfdictionary(CFDictionaryRef dict)
{
	std::map<std::string, std::string> result;
	long count = CFDictionaryGetCount(dict);
	const void** keys = new const void*[count];
	const void** values = new const void*[count];
	CFDictionaryGetKeysAndValues(dict, keys, values);
	for (size_t index = 0; index < count; index++)
	{
        // The casts below are necessary - Xcode's compiler doesn't cope without them
        CFStringRef value = (CFStringRef)values[index];
        CFStringRef key_str = (CFStringRef)keys[index];
		std::string key = get_cstring_from_cfstring(key_str);
		if (CFGetTypeID(value) == CFStringGetTypeID())
		{
			result[key] = get_cstring_from_cfstring(value);
		}
	}

	delete[] keys;
	delete[] values;

	return result;
}

std::map<std::string, std::map<std::string, std::string>> parse_lookup_cfdictionary(CFDictionaryRef dict)
{
	// The dictionary may contain elements whose values are not strings
	// However those are filtered out
	// In the future if we ever need more information about applications this would be a perfect place to look
	std::map<std::string, std::map<std::string, std::string>> result;
	long count = CFDictionaryGetCount(dict);
	const void** keys = new const void*[count];
	const void** values = new const void*[count];
	CFDictionaryGetKeysAndValues(dict, keys, values);
	for (size_t index = 0; index < count; index++)
	{
        CFStringRef key_str = (CFStringRef)keys[index];
        CFDictionaryRef value_dict = (CFDictionaryRef)values[index];
        std::string key = get_cstring_from_cfstring(key_str);
		result[key] = parse_cfdictionary(value_dict);
	}

	delete[] keys;
	delete[] values;

	return result;
}

bool get_all_apps(std::string device_identifier, std::map<std::string, std::map<std::string, std::string>>& map)
{
	CFDictionaryRef result = nullptr;
	if (!start_session(device_identifier))
	{
		if (AMDeviceLookupApplications(devices[device_identifier].device_info, NULL, &result))
		{
			return false;
		}
		else
		{
			// The result from AMDeviceLookupApplications is actually a dictionary
			// Very much resembling a plist
			// It contains a lot of information about the app, but right now we only care for the properties `CFBundleExecutable` and `Path`
			map = parse_lookup_cfdictionary(result);
		}
	}

	stop_session(device_identifier);
	return true;
}

void lookup_apps(std::string device_identifier, std::string method_id)
{
	std::map<std::string, std::map<std::string, std::string>> map;
	if (get_all_apps(device_identifier, map))
	{
		print(json({ { kResponse, map }, { kId, method_id }, { kDeviceId, device_identifier } }));
	}
	else
	{
		print_error("Lookup applications failed", device_identifier, method_id, kApplicationsCustomError);
	}
}

void device_log(std::string device_identifier, std::string method_id)
{
	HANDLE socket = start_service(device_identifier, kSyslog, method_id);
	if (!socket)
	{
		return;
	}

	char *buffer = new char[kDeviceLogBytesToRead];
	int bytes_read;
	while ((bytes_read = recv((SOCKET)socket, buffer, kDeviceLogBytesToRead, 0)) > 0)
	{
		json message;
		message[kDeviceId] = device_identifier;
		message[kMessage] = std::string(buffer, bytes_read);
		message[kId] = method_id;
		print(message);
	}

	delete[] buffer;
}

void post_notification(std::string device_identifier, PostNotificationInfo post_notification_info, std::string method_id)
{
	HANDLE handle = start_service(device_identifier, kNotificationProxy, method_id, true, true);
	if (!handle)
	{
		return;
	}

	if (!devices.count(device_identifier))
	{
		print_error("Device not found", device_identifier, method_id, kAMDNotFoundError);
		return;
	}

	std::stringstream xml_command;
	xml_command << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
						"<!DOCTYPE plist PUBLIC \"-//Apple//DTD PLIST 1.0//EN\" \"http://www.apple.com/DTDs/PropertyList-1.0.dtd\">"
						"<plist version=\"1.0\">"
						"<dict>"
							"<key>Command</key>"
							"<string>" + post_notification_info.command_type + "</string>"
							"<key>Name</key>"
							"<string>" + post_notification_info.notification_name + "</string>"
							"<key>ClientOptions</key>"
							"<string></string>"
						"</dict>"
						"</plist>";

	SOCKET socket = (SOCKET)handle;
	send_message(xml_command.str().c_str(), socket);
	print(json({ { kResponse, socket }, { kId, method_id }, { kDeviceId, device_identifier } }));
}

void await_notification_response(std::string device_identifier, AwaitNotificationResponseInfo await_notification_response_info, std::string method_id)
{
	std::map<std::string, boost::any> response = receive_message(await_notification_response_info.socket, await_notification_response_info.timeout);
	if (response.size())
	{
		PRINT_ERROR_AND_RETURN_IF_FAILED_RESULT(response.count(kErrorKey), boost::any_cast<std::string>(response[kErrorKey]).c_str(), device_identifier, method_id);

		std::string response_command_type = boost::any_cast<std::string>(response[kCommandKey]);
		std::string invalid_response_type_error_message = "Invalid notification response command type: " + response_command_type;
		PRINT_ERROR_AND_RETURN_IF_FAILED_RESULT(response_command_type != await_notification_response_info.response_command_type, invalid_response_type_error_message.c_str(), device_identifier, method_id);

		std::string response_message = boost::any_cast<std::string>(response[await_notification_response_info.response_property_name]);
		print(json({ { kResponse,  response_message }, { kId, method_id }, { kDeviceId, device_identifier } }));
	}
	else
	{
		print_error("ObserveNotification timeout.", device_identifier, method_id);
	}
}

bool validate(const json& j, std::string key, std::string method_id, std::string device_identifier = kNullMessageId)
{
	std::stringstream error;
	if (j.count(key) == 0)
	{
		error << "Argument " + key + " is missing";
		print_error(error.str().c_str(), device_identifier, method_id, kArgumentError);
		return false;
	}

	json::const_iterator entry = j.find(key);
	json value = entry.value();
	if (!value.is_string()) {
		error << "Argument " + key + " has incorrect value";
		print_error(error.str().c_str(), device_identifier, method_id, kArgumentError);
		return false;
	}
	return true;
}

bool validate(const json& j, std::vector<std::string> attributes, std::string method_id, std::string device_identifier)
{
	for (std::string key : attributes)
		if (!validate(j, key, method_id, device_identifier))
			return false;

	return true;
}

bool validate_device_id_and_attrs(const json& j, std::string method_id, std::vector<std::string> attrs)
{
	if (!validate(j, kDeviceId, method_id))
		return false;

	std::string device_identifier = j.value(kDeviceId, "");

	if (!validate(j, attrs, method_id, device_identifier))
		return false;

	return true;
}

void stop_app(std::string device_identifier, std::string application_identifier, std::string ddi, std::string method_id)
{
	if (!devices.count(device_identifier))
	{
		print_error("Device not found", device_identifier, method_id, kAMDNotFoundError);
		return;
	}

	std::map<std::string, std::map<std::string, std::string>> map;
	if (get_all_apps(device_identifier, map))
	{
		if (map.count(application_identifier) == 0)
		{
			print_error("Application not installed", device_identifier, method_id, kApplicationsCustomError);
			return;
		}

		HANDLE gdb = start_debug_server(device_identifier, ddi, method_id);
		if (!gdb)
		{
			return;
		}

		std::string executable = map[application_identifier][kPathPascalCase];
		if (stop_application(executable, (SOCKET)gdb, application_identifier, devices[device_identifier].apps_cache))
			print(json({ { kResponse, "Successfully stopped application" },{ kId, method_id },{ kDeviceId, device_identifier } }));
		else
			print_error("Could not stop application", device_identifier, method_id, kApplicationsCustomError);

		detach_connection((SOCKET)gdb, application_identifier, &devices[device_identifier]);
	}
	else
	{
		print_error("Lookup applications failed", device_identifier, method_id, kApplicationsCustomError);
	}
}

void start_app(std::string device_identifier, std::string application_identifier, std::string ddi, std::string method_id)
{
	if (!devices.count(device_identifier))
	{
		print_error("Device not found", device_identifier, method_id, kAMDNotFoundError);
		return ;
	}

	std::map<std::string, std::map<std::string, std::string>> map;
	if (get_all_apps(device_identifier, map))
	{
		if (map.count(application_identifier) == 0)
		{
			print_error("Application not installed", device_identifier, method_id, kApplicationsCustomError);
			return;
		}

		HANDLE gdb = start_debug_server(device_identifier, ddi, method_id);
		if (!gdb)
		{
			return;
		}

		std::string executable = map[application_identifier][kPathPascalCase] + "/" + map[application_identifier]["CFBundleExecutable"];
		if (run_application(executable, (SOCKET)gdb, application_identifier, devices[device_identifier].apps_cache))
			print(json({ { kResponse, "Successfully started application" },{ kId, method_id },{ kDeviceId, device_identifier } }));
		else
			print_error("Could not start application", device_identifier, method_id, kApplicationsCustomError);
	}
	else
	{
		print_error("Lookup applications failed", device_identifier, method_id, kApplicationsCustomError);
	}
}

void connect_to_port(std::string device_identifier, int port, std::string method_id)
{
	if (!devices.count(device_identifier))
	{
		print_error("Device not found.", device_identifier, method_id);
		return;
	}

	if (devices[device_identifier].device_server_data != nullptr)
	{
		// Dispose the old connection.
		devices[device_identifier].kill_device_server();
	}

	DeviceInfo* device_info = devices[device_identifier].device_info;

	int interface_type = AMDeviceGetInterfaceType(device_info);

	if (interface_type != kUSBInterfaceType)
	{
		print_error("The device is not connected with USB.", device_identifier, method_id);
		return;
	}

	int connection_id = AMDeviceGetConnectionID(device_info);
	long long device_socket;
	int usb_result = USBMuxConnectByPort(connection_id, htons(port), &device_socket);

	if (device_socket < 0)
	{
		print_error("USBMuxConnectByPort returned bad file descriptor", device_identifier, method_id, usb_result);
	}
	else
	{
		DeviceServerData* server_socket_data = create_server(device_socket, kLocalhostAddress);
		if (server_socket_data == nullptr)
		{
			print_error("Failed to start the proxy server between the Chrome Dev Tools and the iOS device.", device_identifier, method_id);
			return;
		}

		devices[device_identifier].device_server_data = server_socket_data;
		// We can use the device socket which is returned from USBMuxConnectByPort only in the C++ code.
		// That's why we need to create a server which will serve to expose the socket.
		// When we receive a client connection we will create a client socket.
		// Each message received on the client socket will be sent to the device socket.
		// Each message from the device socket will be sent to the client socket.
		sockaddr_in server_address = server_socket_data->server_address;
		unsigned short port = ntohs(server_address.sin_port);
		socklen_t address_length = sizeof(server_address);

		// Return the host address and the port to the client.
		print(json({ { kHost, kLocalhostAddress }, { kPort, port }, { kId, method_id }, { kDeviceId, device_identifier } }));

		// Wait for the client to connect.
		SOCKET client_socket = accept(server_socket_data->server_socket, (sockaddr*)&server_address, &address_length);

		// Proxy the messages from the client socket to the device socket
		// and from the device socket to the client socket.
		proxy_socket_io(device_socket, client_socket, [](SOCKET client_fd) {
			close_socket(client_fd);
		}, [=](SOCKET d_fd) {
			devices[device_identifier].kill_device_server();
		});
	}
}

int main()
{
#ifdef _WIN32
	_setmode(_fileno(stdout), _O_BINARY);
	_setmode(_fileno(stderr), _O_BINARY);

	if (load_dlls())
	{
		return -1;
	}
#endif

	std::thread([]() { start_run_loop(); }).detach();

	for (std::string line; std::getline(std::cin, line);)
	{
		json message = json::parse(line.c_str());
		for (json method : message.value("methods", json::array()))
		{
			std::string method_name = method.value("name", "");
			std::string method_id = method.value("id", "");
			std::vector<json> method_args = method.value("args", json::array()).get<std::vector<json>>();

			if (method_name == "install")
			{
				perform_detached_operation(install_application, method_args, method_id);
			}
			else if (method_name == "uninstall")
			{
				perform_detached_operation(uninstall_application, method_args, method_id);
			}
			else if (method_name == "list")
			{
				for (json &arg : method_args)
				{
					if (!validate_device_id_and_attrs(arg, method_id, { kAppId , kPathLowerCase}))
						continue;

					std::string device_identifier = arg.value(kDeviceId, "");
					std::string application_identifier = arg.value(kAppId, "");
					std::string path = arg.value(kPathLowerCase, "");
					list_files(device_identifier, application_identifier.c_str(), path.c_str(), method_id);
				}
			}
			else if (method_name == "upload")
			{
				for (json &arg : method_args)
				{
					std::string application_identifier = arg.value(kAppId, "");
					std::string device_identifier = arg.value(kDeviceId, "");
					std::vector<json> files = arg.value(kFiles, json::array()).get<std::vector<json>>();

					std::thread([=]() -> void
					{
						std::vector<FileUploadData> files_data;
						for (json file : files)
						{
							files_data.push_back({ file.value(kSource, ""), file.value(kDestination, "") });
						}

						upload_file(device_identifier, application_identifier.c_str(), files_data, method_id);
					}).detach();
				}
			}
			else if (method_name == "delete")
			{
				for (json &arg : method_args)
				{
					if (!validate_device_id_and_attrs(arg, method_id, { kAppId , kDestination }))
						continue;

					std::string application_identifier = arg.value(kAppId, "");
					std::string device_identifier = arg.value(kDeviceId, "");
					std::string destination = arg.value(kDestination, "");
					std::thread([=]() { delete_file(device_identifier, application_identifier.c_str(), destination.c_str(), method_id); }).detach();
				}
			}
			else if (method_name == "read")
			{
				for (json &arg : method_args)
				{
					if (!validate_device_id_and_attrs(arg, method_id, { kAppId , kPathLowerCase }))
						continue;

					std::string application_identifier = arg.value(kAppId, "");
					std::string device_identifier = arg.value(kDeviceId, "");
					std::string path = arg.value(kPathLowerCase, "");
					read_file(device_identifier, application_identifier.c_str(), path.c_str(), method_id);
				}
			}
			else if (method_name == "download")
			{
				for (json &arg : method_args)
				{
					if (!validate_device_id_and_attrs(arg, method_id, { kAppId , kDeviceId, kDestination }))
						continue;

					std::string application_identifier = arg.value(kAppId, "");
					std::string device_identifier = arg.value(kDeviceId, "");
					std::string source = arg.value(kSource, "");
					std::string destination = arg.value(kDestination, "");
					read_file(device_identifier, application_identifier.c_str(), source.c_str(), method_id, destination.c_str());
				}
			}
			else if (method_name == "apps")
			{
				for (json &device_identifier_json : method_args) {
					std::string device_identifier = device_identifier_json.get<std::string>();
					perform_detached_operation(get_application_infos, device_identifier, method_id);
				}
			}
			else if (method_name == "log")
			{
				for (json &device_identifier_json : method_args) {
					std::string device_identifier = device_identifier_json.get<std::string>();
					perform_detached_operation(device_log, device_identifier, method_id);
				}
			}
			else if (method_name == "postNotification")
			{
				for (json &arg : method_args)
				{
					if (!validate_device_id_and_attrs(arg, method_id, { kCommandType, kNotificationName }))
						continue;

					std::string device_identifier = arg.value(kDeviceId, "");
					std::string command_type = arg.value(kCommandType, "");
					std::string notification_name = arg.value(kNotificationName, "");
					int timeout = arg.value(kTimeout, 0);

					PostNotificationInfo post_notification_info({ command_type, notification_name});
					std::thread([=]() { post_notification(device_identifier, post_notification_info, method_id); }).detach();
				}
			}
			else if (method_name == "awaitNotificationResponse")
			{
				for (json &arg : method_args)
				{
					if (!validate_device_id_and_attrs(arg, method_id, { kResponseCommandType, kResponsePropertyName }))
						continue;

					std::string device_identifier = arg.value(kDeviceId, "");
					std::string response_command_type = arg.value(kResponseCommandType, "");
					std::string response_key_name = arg.value(kResponsePropertyName, "");
					SOCKET socket = arg.value(kSocket, 0);
					int timeout = arg.value(kTimeout, -1);

					AwaitNotificationResponseInfo await_notification_response_info({ response_command_type, response_key_name, socket, timeout });
					std::thread([=]() { await_notification_response(device_identifier, await_notification_response_info, method_id); }).detach();
				}
			}
			else if (method_name == "start")
			{
				for (json &arg : method_args)
				{
					if (!validate_device_id_and_attrs(arg, method_id, { kAppId , kDeviceId }))
						continue;

					std::string application_identifier = arg.value(kAppId, "");
					std::string device_identifier = arg.value(kDeviceId, "");
					std::string ddi = arg.value(kDeveloperDiskImage, "");
					start_app(device_identifier, application_identifier, ddi, method_id);
				}
			}
			else if (method_name == "stop")
			{
				for (json &arg : method_args)
				{
					if (!validate_device_id_and_attrs(arg, method_id, { kAppId , kDeviceId }))
						continue;

					std::string application_identifier = arg.value(kAppId, "");
					std::string device_identifier = arg.value(kDeviceId, "");
					std::string ddi = arg.value(kDeveloperDiskImage, "");
					stop_app(device_identifier, application_identifier, ddi, method_id);
				}
			}
			else if (method_name == "connectToPort")
			{
				for (json &arg : method_args)
				{
					if (!validate_device_id_and_attrs(arg, method_id, { kDeviceId }))
						continue;

					std::string device_identifier = arg.value(kDeviceId, "");
					int port = arg.value(kPort, -1);
					std::thread([=]() { connect_to_port(device_identifier, port, method_id); }).detach();
				}
			}
			else if (method_name == "exit")
			{
				return 0;
			}
		}
	}

	return 0;
}