Changed the API a bit to closer match libimobiledevice and added function to get ECID

2 files changed, 207 insertions, 237 deletions

diff --git a/src/irecovery.c b/src/irecovery.c
index 56b0453..00db72d 100644
--- a/src/irecovery.c
+++ b/src/irecovery.c
@@ -35,12 +35,12 @@ static unsigned int verbose = 0;
 
 void print_shell_usage() {
 	printf("Usage:\n");
-	printf("\t/upload <file>\tSend file to device.\n");
+	printf("\t/upload <file>\tSend file to client.\n");
 	printf("\t/help\t\tShow this help.\n");
 	printf("\t/exit\t\tExit interactive shell.\n");
 }
 
-void parse_command(irecv_device_t* device, unsigned char* command, unsigned int size) {
+void parse_command(irecv_client_t client, unsigned char* command, unsigned int size) {
 	char* cmd = strtok(strdup(command), " ");
 	debug("Executing %s %s\n", cmd, command);
 	if(!strcmp(cmd, "/exit")) {
@@ -50,25 +50,18 @@ void parse_command(irecv_device_t* device, unsigned char* command, unsigned int
 	if(!strcmp(cmd, "/help")) {
 		print_shell_usage();
 	} else
-
-	if(!strcmp(cmd, "/reconnect")) {
-		char* uuid = strdup(device->uuid);
-		irecv_close(device);
-		irecv_open(device, uuid);
-		free(uuid);
-	} else
 	
 	if(!strcmp(cmd, "/upload")) {
 		char* filename = strtok(NULL, " ");
 		debug("Sending %s\n", filename);
 		if(filename != NULL) {
-			irecv_send_file(device, filename);
+			irecv_send_file(client, filename);
 		}
 	}
 	free(cmd);
 }
 
-int recv_callback(irecv_device_t* device, unsigned char* data, int size) {
+int recv_callback(irecv_client_t client, unsigned char* data, int size) {
 	int i = 0;
 	for(i = 0; i < size; i++) {
 		printf("%c", data[i]);
@@ -76,23 +69,23 @@ int recv_callback(irecv_device_t* device, unsigned char* data, int size) {
 	return size;
 }
 
-int send_callback(irecv_device_t* device, unsigned char* command, int size) {
+int send_callback(irecv_client_t client, unsigned char* command, int size) {
 	irecv_error_t error = 0;
 	if(command[0] == '/') {
-		parse_command(device, command, size);
+		parse_command(client, command, size);
 		return 0;
 	}
 
 	if(strstr(command, "getenv") != NULL) {
 		unsigned char* value = NULL;
-		error = irecv_send_command(device, command);
-		if(error != IRECV_SUCCESS) {
+		error = irecv_send_command(client, command);
+		if(error != IRECV_E_SUCCESS) {
 			debug("%s\n", irecv_strerror(error));
 			return error;
 		}
 
-		error = irecv_getenv(device, &value);
-		if(error != IRECV_SUCCESS) {
+		error = irecv_getenv(client, &value);
+		if(error != IRECV_E_SUCCESS) {
 			debug("%s\n", irecv_strerror(error));
 			return error;
 		}
@@ -103,8 +96,8 @@ int send_callback(irecv_device_t* device, unsigned char* command, int size) {
 	}
 
 	if(!strcmp(command, "reboot")) {
-		error = irecv_send_command(device, command);
-		if(error != IRECV_SUCCESS) {
+		error = irecv_send_command(client, command);
+		if(error != IRECV_E_SUCCESS) {
 			debug("%s\n", irecv_strerror(error));
 			return error;
 		}
@@ -124,22 +117,22 @@ void append_command_to_history(char* cmd) {
 	write_history(FILE_HISTORY_PATH);
 }
 
-void init_shell(irecv_device_t* device) {
+void init_shell(irecv_client_t client) {
 	irecv_error_t error = 0;
 	load_command_history();
-	irecv_set_sender(device, &send_callback);
-	irecv_set_receiver(device, &recv_callback);
+	irecv_set_sender(client, &send_callback);
+	irecv_set_receiver(client, &recv_callback);
 	while(!quit) {
-		error = irecv_receive(device);
-		if(error != IRECV_SUCCESS) {
+		error = irecv_receive(client);
+		if(error != IRECV_E_SUCCESS) {
 			debug("%s\n", irecv_strerror(error));
 			break;
 		}
 		
 		char* cmd = readline("> ");
 		if(cmd && *cmd) {
-			error = irecv_send(device, cmd);
-			if(error != IRECV_SUCCESS) {
+			error = irecv_send(client, cmd);
+			if(error != IRECV_E_SUCCESS) {
 				quit = 1;
 			}
 			
@@ -153,16 +146,17 @@ void print_usage() {
 	printf("iRecovery - iDevice Recovery Utility\n");
 	printf("Usage: ./irecovery [args]\n");
 	printf("\t-v\t\tStart irecovery in verbose mode.\n");
-	printf("\t-u <uuid>\ttarget specific device by its 40-digit device UUID\n");
-	printf("\t-c <cmd>\tSend command to device.\n");
-	printf("\t-f <file>\tSend file to device.\n");
+	printf("\t-u <uuid>\ttarget specific client by its 40-digit client UUID\n");
+	printf("\t-c <cmd>\tSend command to client.\n");
+	printf("\t-f <file>\tSend file to client.\n");
 	printf("\t-h\t\tShow this help.\n");
-	printf("\t-r\t\tReset device.\n");
+	printf("\t-r\t\tReset client.\n");
 	printf("\t-s\t\tStart interactive shell.\n");
 	exit(1);
 }
 
 int main(int argc, char** argv) {
+	int i = 0;
 	int opt = 0;
 	int action = 0;
 	char* argument = NULL;
@@ -179,14 +173,14 @@ int main(int argc, char** argv) {
 			print_usage();
 			break;
 
-		case 'r':
-			action = kResetDevice;
-			break;
-
 		case 'u':
 			uuid = optarg;
 			break;
 
+		case 'r':
+			action = kResetDevice;
+			break;
+
 		case 's':
 			action = kStartShell;
 			break;
@@ -207,45 +201,37 @@ int main(int argc, char** argv) {
 		}
 	}
 
-	irecv_device_t* device = irecv_init();
-	if(device == NULL) {
-		fprintf(stderr, "Unable to initialize libirecovery\n");
-		return -1;
-	}
-	if(verbose) irecv_set_debug(device, verbose);
-
-	int i = 0;
+	irecv_client_t client = NULL;
 	for(i = 0; i <= 5; i++) {
-		debug("Attempting to connect... ");
+		debug("Attempting to connect... \n");
 
-		if(irecv_open(device, uuid) < 0) sleep(1);
+		if(irecv_open(&client, uuid) != IRECV_E_SUCCESS) sleep(1);
 		else break;
 
-		debug("failed. No recovery device found.\n");
-
 		if(i == 5) {
-			irecv_exit(device);
 			return -1;
 		}
 	}
 
+	if(verbose) irecv_set_debug(client, verbose);
+
 	switch(action) {
 	case kResetDevice:
-		irecv_reset(device);
+		irecv_reset(client);
 		break;
 
 	case kSendFile:
-		error = irecv_send_file(device, argument);
+		error = irecv_send_file(client, argument);
 		debug("%s\n", irecv_strerror(error));
 		break;
 
 	case kSendCommand:
-		error = irecv_send_command(device, argument);
+		error = irecv_send_command(client, argument);
 		debug("%s\n", irecv_strerror(error));
 		break;
 
 	case kStartShell:
-		init_shell(device);
+		init_shell(client);
 		break;
 
 	default:
@@ -253,7 +239,7 @@ int main(int argc, char** argv) {
 		break;
 	}
 
-	irecv_exit(device);
+	irecv_close(client);
 	return 0;
 }
 
diff --git a/src/libirecovery.c b/src/libirecovery.c
index 0be16c6..a2ec9c9 100644
--- a/src/libirecovery.c
+++ b/src/libirecovery.c
@@ -25,7 +25,7 @@
 #include "libirecovery.h"
 
 #define BUFFER_SIZE 0x1000
-#define debug(...) if(device->debug) fprintf(stderr, __VA_ARGS__)
+#define debug(...) if(client->debug) fprintf(stderr, __VA_ARGS__)
 
 const char* irecv_error_invalid_input     = "Invalid input";
 const char* irecv_error_unknown           = "Unknown error";
@@ -39,40 +39,22 @@ const char* irecv_error_success           = "Command completed successfully";
 const char* irecv_error_usb_upload        = "Unable to upload data to device";
 const char* irecv_error_usb_configuration = "Unable to set device configuration";
 
-int irecv_default_sender(irecv_device_t* device, unsigned char* data, int size);
-int irecv_default_receiver(irecv_device_t* device, unsigned char* data, int size);
+int irecv_default_sender(irecv_client_t client, unsigned char* data, int size);
+int irecv_default_receiver(irecv_client_t client, unsigned char* data, int size);
 
-irecv_device_t* irecv_init() {
-	struct libusb_context* usb_context = NULL;
-
-	libusb_init(&usb_context);
-	irecv_device_t* device = (irecv_device_t*) malloc(sizeof(irecv_device_t));
-	if (device == NULL) {
-		return NULL;
-	}
-	memset(device, '\0', sizeof(irecv_device_t));
-
-	//irecv_set_receiver(device, &irecv_default_receiver);
-	//irecv_set_sender(device, &irecv_default_sender);
-	device->context = usb_context;
-	return device;
-}
-
-irecv_error_t irecv_open(irecv_device_t* device, const char *uuid) {
+irecv_error_t irecv_open(irecv_client_t* pclient, const char* uuid) {
 	int i = 0;
-	int usb_device_count = 0;
 	char serial[256];
 	struct libusb_device* usb_device = NULL;
+	struct libusb_context* usb_context = NULL;
 	struct libusb_device** usb_device_list = NULL;
 	struct libusb_device_handle* usb_handle = NULL;
 	struct libusb_device_descriptor usb_descriptor;
 
-	if (device == NULL || device->context == NULL) {
-		return IRECV_ERROR_NO_DEVICE;
-	}
-
-	irecv_error_t error = 0;
-	usb_device_count = libusb_get_device_list(device->context, &usb_device_list);
+	*pclient = NULL;
+	libusb_init(&usb_context);
+	irecv_error_t error = IRECV_E_SUCCESS;
+	int usb_device_count = libusb_get_device_list(usb_context, &usb_device_list);
 	for (i = 0; i < usb_device_count; i++) {
 		usb_device = usb_device_list[i];
 		libusb_get_device_descriptor(usb_device, &usb_descriptor);
@@ -87,147 +69,132 @@ irecv_error_t irecv_open(irecv_device_t* device, const char *uuid) {
 				libusb_open(usb_device, &usb_handle);
 				if (usb_handle == NULL) {
 					libusb_free_device_list(usb_device_list, 1);
-					return IRECV_ERROR_UNABLE_TO_CONNECT;
-				}
-
-				/* get serial number */
-				if (libusb_get_string_descriptor_ascii (usb_handle, usb_descriptor.iSerialNumber, serial, sizeof(serial)) < 0) {
-					libusb_free_device_list(usb_device_list, 1);
 					libusb_close(usb_handle);
-					return IRECV_ERROR_UNABLE_TO_CONNECT;
-				}
-
-				/* match uuid if required */
-				if (uuid != NULL) {
-					if (strcmp(uuid, serial)) {
-						libusb_close(usb_handle);
-						continue;
-					}
+					libusb_exit(usb_context);
+					return IRECV_E_UNABLE_TO_CONNECT;
 				}
+				libusb_set_debug(usb_context, 3);
 
 				/* identified a valid recovery device */
 				libusb_free_device_list(usb_device_list, 1);
 
-				device->handle = usb_handle;
-				device->uuid = strdup(serial);
-				device->mode = (irecv_mode_t) usb_descriptor.idProduct;
-
-				debug("opening UUID \"%s\"... ", device->uuid);
+				irecv_client_t client = (irecv_client_t) malloc(sizeof(irecv_client_t));
+				if (client == NULL) {
+					libusb_close(usb_handle);
+					libusb_exit(usb_context);
+					return IRECV_E_OUT_OF_MEMORY;
+				}
+				memset(client, '\0', sizeof(irecv_client_t));
+				client->handle = usb_handle;
+				client->context = usb_context;
+				client->mode = (irecv_mode_t) usb_descriptor.idProduct;
 
-				error = irecv_set_configuration(device, 1);
-				if(error != IRECV_SUCCESS) {
-					debug("setting configuration... ");
+				error = irecv_set_configuration(client, 1);
+				if(error != IRECV_E_SUCCESS) {
 					return error;
 				}
 
-				error = irecv_set_interface(device, 1, 1);
-				if(error != IRECV_SUCCESS) {
-					debug("setting interface... ");
+				error = irecv_set_interface(client, 1, 1);
+				if(error != IRECV_E_SUCCESS) {
 					return error;
 				}
 
-				return IRECV_SUCCESS;
+				*pclient = client;
+				printf("done");
+				return IRECV_E_SUCCESS;
 			}
 		}
 	}
 
-	return IRECV_ERROR_NO_DEVICE;
+	return IRECV_E_UNABLE_TO_CONNECT;
 }
 
-irecv_error_t irecv_set_configuration(irecv_device_t* device, int configuration) {
-	if(device == NULL || device->handle == NULL) {
-		return IRECV_ERROR_NO_DEVICE; 
+irecv_error_t irecv_set_configuration(irecv_client_t client, int configuration) {
+	if(client == NULL || client->handle == NULL) {
+		return IRECV_E_NO_DEVICE;
 	}
+
+	debug("Setting to configuration %d", configuration);
 	
 	int current = 0;
-	libusb_get_configuration(device->handle, &current);
+	libusb_get_configuration(client->handle, &current);
 	if(current != configuration) {
-		if (libusb_set_configuration(device->handle, configuration) < 0) {
-			return IRECV_ERROR_USB_CONFIGURATION;
+		if (libusb_set_configuration(client->handle, configuration) < 0) {
+			return IRECV_E_USB_CONFIGURATION;
 		}
 	}
 	
-	device->config = configuration;
-	return IRECV_SUCCESS;
+	client->config = configuration;
+	return IRECV_E_SUCCESS;
 }
 
-irecv_error_t irecv_set_interface(irecv_device_t* device, int interface, int alt_interface) {
-	if(device == NULL || device->handle == NULL) {
-		return IRECV_ERROR_NO_DEVICE; 
+irecv_error_t irecv_set_interface(irecv_client_t client, int interface, int alt_interface) {
+	if(client == NULL || client->handle == NULL) {
+		return IRECV_E_NO_DEVICE;
 	}
 
-	if (libusb_claim_interface(device->handle, interface) < 0) {
-		return IRECV_ERROR_USB_INTERFACE;
+	debug("Setting to interface %d:%d", interface, alt_interface);
+	libusb_reset_device(client->handle);
+
+	if (libusb_claim_interface(client->handle, interface) < 0) {
+		return IRECV_E_USB_INTERFACE;
 	}
 	
-	if(libusb_set_interface_alt_setting(device->handle, interface, alt_interface) < 0) {
-		return IRECV_ERROR_USB_INTERFACE;
+	if(libusb_set_interface_alt_setting(client->handle, interface, alt_interface) < 0) {
+		return IRECV_E_USB_INTERFACE;
 	}
 	
-	device->interface = interface;
-	device->alt_interface = alt_interface;
-	return IRECV_SUCCESS;
+	client->interface = interface;
+	client->alt_interface = alt_interface;
+	return IRECV_E_SUCCESS;
 }
 
-irecv_error_t irecv_reset(irecv_device_t* device) {
-	if (device == NULL || device->handle != NULL) {
-		return IRECV_ERROR_NO_DEVICE;
+irecv_error_t irecv_reset(irecv_client_t client) {
+	if (client == NULL || client->handle != NULL) {
+		return IRECV_E_NO_DEVICE;
 	}
 
-	libusb_reset_device(device->handle);
-	return IRECV_SUCCESS;
+	libusb_reset_device(client->handle);
+	return IRECV_E_SUCCESS;
 }
 
-irecv_error_t irecv_close(irecv_device_t* device) {
-	if (device == NULL) {
-		return IRECV_ERROR_NO_DEVICE;
-	}
-
-	if(device->handle != NULL) {
-		libusb_release_interface(device->handle, 0);
-		libusb_release_interface(device->handle, 1);
-		libusb_close(device->handle);
-		device->handle = NULL;
-	}
-
-	if(device->uuid != NULL) {
-		free(device->uuid);
-	}
-
-	return IRECV_SUCCESS;
-}
+irecv_error_t irecv_close(irecv_client_t client) {
+	if (client != NULL) {
+		if (client->handle != NULL) {
+			libusb_release_interface(client->handle, 1);
+			libusb_close(client->handle);
+			client->handle = NULL;
+		}
 
-irecv_error_t irecv_exit(irecv_device_t* device) {
-	if (device != NULL) {
-		if (device->handle != NULL) {
-			irecv_close(device);
+		if (client->context != NULL) {
+			libusb_exit(client->context);
+			client->context = NULL;
 		}
 
-		if (device->context != NULL) {
-			libusb_exit(device->context);
-			device->context = NULL;
+		if(client->uuid != NULL) {
+			free(client->uuid);
 		}
 
-		free(device);
-		device = NULL;
+		free(client);
+		client = NULL;
 	}
 
-	return IRECV_SUCCESS;
+	return IRECV_E_SUCCESS;
 }
 
-irecv_error_t irecv_set_debug(irecv_device_t* device, int level) {
-	if(device == NULL || device->context == NULL) {
-		return IRECV_ERROR_NO_DEVICE; 
+irecv_error_t irecv_set_debug(irecv_client_t client, int level) {
+	if(client == NULL || client->context == NULL) {
+		return IRECV_E_NO_DEVICE;
 	}
 	
-	libusb_set_debug(device->context, level);
-	device->debug = level;
-	return IRECV_SUCCESS;
+	libusb_set_debug(client->context, level);
+	client->debug = level;
+	return IRECV_E_SUCCESS;
 }
 
-irecv_error_t irecv_send(irecv_device_t* device, unsigned char* command) {
-	if(device == NULL || device->handle == NULL) {
-		return IRECV_ERROR_NO_DEVICE;
+irecv_error_t irecv_send(irecv_client_t client, unsigned char* command) {
+	if(client == NULL || client->handle == NULL) {
+		return IRECV_E_NO_DEVICE;
 	}
 
 	unsigned int length = strlen(command);
@@ -235,22 +202,22 @@ irecv_error_t irecv_send(irecv_device_t* device, unsigned char* command) {
 		length = 0xFF;
 	}
 	
-	if(device->send_callback != NULL) {
+	if(client->send_callback != NULL) {
 		// Call our user defined callback first, this must return a number of bytes to send
 		//   or zero to abort send.
-		length = device->send_callback(device, command, length);
+		length = client->send_callback(client, command, length);
 	}
 
 	if(length > 0) {
-		irecv_send_command(device, command);
+		irecv_send_command(client, command);
 	}
 
-	return IRECV_SUCCESS;
+	return IRECV_E_SUCCESS;
 }
 
-irecv_error_t irecv_send_command(irecv_device_t* device, unsigned char* command) {
-	if(device == NULL || device->handle == NULL) {
-		return IRECV_ERROR_NO_DEVICE;
+irecv_error_t irecv_send_command(irecv_client_t client, unsigned char* command) {
+	if(client == NULL || client->handle == NULL) {
+		return IRECV_E_NO_DEVICE;
 	}
 
 	unsigned int length = strlen(command);
@@ -259,20 +226,20 @@ irecv_error_t irecv_send_command(irecv_device_t* device, unsigned char* command)
 	}
 
 	if(length > 0) {
-		libusb_control_transfer(device->handle, 0x40, 0, 0, 0, command, length+1, 100);
+		libusb_control_transfer(client->handle, 0x40, 0, 0, 0, command, length+1, 100);
 	}
 	
-	return IRECV_SUCCESS;
+	return IRECV_E_SUCCESS;
 }
 
-irecv_error_t irecv_send_file(irecv_device_t* device, const char* filename) {
-	if(device == NULL || device->handle == NULL) {
-		return IRECV_ERROR_NO_DEVICE; 
+irecv_error_t irecv_send_file(irecv_client_t client, const char* filename) {
+	if(client == NULL || client->handle == NULL) {
+		return IRECV_E_NO_DEVICE;
 	}
 	
 	FILE* file = fopen(filename, "rb");
 	if (file == NULL) {
-		return IRECV_ERROR_FILE_NOT_FOUND;
+		return IRECV_E_FILE_NOT_FOUND;
 	}
 
 	fseek(file, 0, SEEK_END);
@@ -282,7 +249,7 @@ irecv_error_t irecv_send_file(irecv_device_t* device, const char* filename) {
 	unsigned char* buffer = (unsigned char*) malloc(length);
 	if (buffer == NULL) {
 		fclose(file);
-		return IRECV_ERROR_OUT_OF_MEMORY;
+		return IRECV_E_OUT_OF_MEMORY;
 	}
 
 	int bytes = fread(buffer, 1, length, file);
@@ -290,36 +257,36 @@ irecv_error_t irecv_send_file(irecv_device_t* device, const char* filename) {
 
 	if(bytes != length) {
 		free(buffer);
-		return IRECV_ERROR_UNKNOWN;
+		return IRECV_E_UNKNOWN;
 	}
 
-	irecv_error_t error = irecv_send_buffer(device, buffer, length);
+	irecv_error_t error = irecv_send_buffer(client, buffer, length);
 	free(buffer);
 	return error;
 }
 
-irecv_error_t irecv_get_status(irecv_device_t* device, unsigned int* status) {
-	if(device == NULL || device->handle == NULL) {
+irecv_error_t irecv_get_status(irecv_client_t client, unsigned int* status) {
+	if(client == NULL || client->handle == NULL) {
 		*status = 0;
-		return IRECV_ERROR_NO_DEVICE; 
+		return IRECV_E_NO_DEVICE;
 	}
 	
 	unsigned char buffer[6];
 	memset(buffer, '\0', 6);
-	if(libusb_control_transfer(device->handle, 0xA1, 3, 0, 0, buffer, 6, 1000) != 6) {
+	if(libusb_control_transfer(client->handle, 0xA1, 3, 0, 0, buffer, 6, 1000) != 6) {
 		*status = 0;
-		return IRECV_ERROR_USB_STATUS;
+		return IRECV_E_USB_STATUS;
 	}
 	
 	debug("status: %d\n", (unsigned int) buffer[4]);
 	*status = (unsigned int) buffer[4];
-	return IRECV_SUCCESS;
+	return IRECV_E_SUCCESS;
 }
 
-irecv_error_t irecv_send_buffer(irecv_device_t* device, unsigned char* buffer, unsigned int length) {
+irecv_error_t irecv_send_buffer(irecv_client_t client, unsigned char* buffer, unsigned int length) {
 	irecv_error_t error = 0;
-	if(device == NULL || device->handle == NULL) {
-		return IRECV_ERROR_NO_DEVICE; 
+	if(client == NULL || client->handle == NULL) {
+		return IRECV_E_NO_DEVICE;
 	}
 
 	int last = length % 0x800;
@@ -332,61 +299,61 @@ irecv_error_t irecv_send_buffer(irecv_device_t* device, unsigned char* buffer, u
 	unsigned int status = 0;
 	for (i = 0; i < packets; i++) {
 		int size = i + 1 < packets ? 0x800 : last;
-		int bytes = libusb_control_transfer(device->handle, 0x21, 1, 0, 0, &buffer[i * 0x800], size, 1000);
+		int bytes = libusb_control_transfer(client->handle, 0x21, 1, 0, 0, &buffer[i * 0x800], size, 1000);
 		if (bytes != size) {
-			return IRECV_ERROR_USB_UPLOAD;
+			return IRECV_E_USB_UPLOAD;
 		}
 		
 		debug("Sent %d bytes\n", bytes);
 
-		error = irecv_get_status(device, &status);
-		if (error != IRECV_SUCCESS) {
+		error = irecv_get_status(client, &status);
+		if (error != IRECV_E_SUCCESS) {
 			return error;
 		}
 
 		if(status != 5) {
-			return IRECV_ERROR_USB_STATUS;
+			return IRECV_E_USB_STATUS;
 		}
 
 	}
 
-	libusb_control_transfer(device->handle, 0x21, 1, 0, 0, buffer, 0, 1000);
+	libusb_control_transfer(client->handle, 0x21, 1, 0, 0, buffer, 0, 1000);
 	for (i = 0; i < 3; i++) {
-		error = irecv_get_status(device, &status);
-		if(error != IRECV_SUCCESS) {
+		error = irecv_get_status(client, &status);
+		if(error != IRECV_E_SUCCESS) {
 			return error;
 		}
 	}
 
-	return IRECV_SUCCESS;
+	return IRECV_E_SUCCESS;
 }
 
-irecv_error_t irecv_receive(irecv_device_t* device) {
+irecv_error_t irecv_receive(irecv_client_t client) {
 	unsigned char buffer[BUFFER_SIZE];
 	memset(buffer, '\0', BUFFER_SIZE);
-	if(device == NULL || device->handle == NULL) {
-		return IRECV_ERROR_NO_DEVICE; 
+	if(client == NULL || client->handle == NULL) {
+		return IRECV_E_NO_DEVICE;
 	}
 
 	int bytes = 0;
-	while(libusb_bulk_transfer(device->handle, 0x81, buffer, BUFFER_SIZE, &bytes, 100) == 0) {
+	while(libusb_bulk_transfer(client->handle, 0x81, buffer, BUFFER_SIZE, &bytes, 100) == 0) {
 		if(bytes > 0) {
-			if(device->receive_callback != NULL) {
-				if(device->receive_callback(device, buffer, bytes) != bytes) {
-					return IRECV_ERROR_UNKNOWN;
+			if(client->receive_callback != NULL) {
+				if(client->receive_callback(client, buffer, bytes) != bytes) {
+					return IRECV_E_UNKNOWN;
 				}
 			}
 		} else break;
 	}
 	
-	return IRECV_SUCCESS;
+	return IRECV_E_SUCCESS;
 }
 
-int irecv_default_sender(irecv_device_t* device, unsigned char* data, int size) {
+int irecv_default_sender(irecv_client_t client, unsigned char* data, int size) {
 	return size;
 }
 
-int irecv_default_receiver(irecv_device_t* device, unsigned char* data, int size) {
+int irecv_default_receiver(irecv_client_t client, unsigned char* data, int size) {
 	int i = 0;
 	for(i = 0; i < size; i++) {
 		printf("%c", data[i]);
@@ -394,72 +361,89 @@ int irecv_default_receiver(irecv_device_t* device, unsigned char* data, int size
 	return size;
 }
 
-irecv_error_t irecv_set_receiver(irecv_device_t* device, irecv_receive_callback callback) {
-	if(device == NULL) {
-		return IRECV_ERROR_NO_DEVICE; 
+irecv_error_t irecv_set_receiver(irecv_client_t client, irecv_receive_callback callback) {
+	if(client == NULL) {
+		return IRECV_E_NO_DEVICE;
 	}
 	
-	device->receive_callback = callback;
-	return IRECV_SUCCESS;
+	client->receive_callback = callback;
+	return IRECV_E_SUCCESS;
 }
 
-irecv_error_t irecv_set_sender(irecv_device_t* device, irecv_send_callback callback) {
-	if(device == NULL) {
-		return IRECV_ERROR_NO_DEVICE; 
+irecv_error_t irecv_set_sender(irecv_client_t client, irecv_send_callback callback) {
+	if(client == NULL) {
+		return IRECV_E_NO_DEVICE;
 	}
 	
-	device->send_callback = callback;
-	return IRECV_SUCCESS;
+	client->send_callback = callback;
+	return IRECV_E_SUCCESS;
 }
 
-irecv_error_t irecv_getenv(irecv_device_t* device, unsigned char** var) {
+irecv_error_t irecv_getenv(irecv_client_t client, unsigned char** var) {
 	unsigned char* value = (unsigned char*) malloc(0x200);
 	if(value == NULL) {
-		return IRECV_ERROR_OUT_OF_MEMORY;
+		return IRECV_E_OUT_OF_MEMORY;
 	}
 
-	int ret =  libusb_control_transfer(device->handle, 0xC0, 0, 0, 0, value, 0x200, 500);
+	int ret =  libusb_control_transfer(client->handle, 0xC0, 0, 0, 0, value, 0x200, 500);
 	if(ret < 0) {
-		return IRECV_ERROR_UNKNOWN;
+		return IRECV_E_UNKNOWN;
 	}
 
 	*var = value;
-	return IRECV_SUCCESS;
+	return IRECV_E_SUCCESS;
+}
+
+
+irecv_error_t irecv_get_ecid(irecv_client_t client, unsigned long long* ecid) {
+	char info[256];
+	memset(info, '\0', 256);
+	libusb_get_string_descriptor_ascii(client->handle, 3, info, 0x100);
+	debug("%s\n", info);
+
+	unsigned char* ecid_string = strstr(info, "ECID:");
+	if(ecid_string == NULL) {
+		*ecid = 0;
+		return IRECV_E_UNKNOWN;
+	}
+	sscanf(ecid_string, "ECID:%qX", ecid);
+
+	return IRECV_E_SUCCESS;
 }
 
 const char* irecv_strerror(irecv_error_t error) {
 	switch(error) {
-	case IRECV_SUCCESS:
+	case IRECV_E_SUCCESS:
 		return irecv_error_success;
 		
-	case IRECV_ERROR_NO_DEVICE:
+	case IRECV_E_NO_DEVICE:
 		return irecv_error_no_device;
 		
-	case IRECV_ERROR_OUT_OF_MEMORY:
+	case IRECV_E_OUT_OF_MEMORY:
 		return irecv_error_out_of_memory;
 		
-	case IRECV_ERROR_UNABLE_TO_CONNECT:
+	case IRECV_E_UNABLE_TO_CONNECT:
 		return irecv_error_unable_to_connect;
 		
-	case IRECV_ERROR_INVALID_INPUT:
+	case IRECV_E_INVALID_INPUT:
 		return irecv_error_invalid_input;
 		
-	case IRECV_ERROR_UNKNOWN:
+	case IRECV_E_UNKNOWN:
 		return irecv_error_unknown;
 		
-	case IRECV_ERROR_FILE_NOT_FOUND:
+	case IRECV_E_FILE_NOT_FOUND:
 		return irecv_error_file_not_found;
 		
-	case IRECV_ERROR_USB_UPLOAD:
+	case IRECV_E_USB_UPLOAD:
 		return irecv_error_usb_upload;
 		
-	case IRECV_ERROR_USB_STATUS:
+	case IRECV_E_USB_STATUS:
 		return irecv_error_usb_status;
 		
-	case IRECV_ERROR_USB_INTERFACE:
+	case IRECV_E_USB_INTERFACE:
 		return irecv_error_usb_interface;
 		
-	case IRECV_ERROR_USB_CONFIGURATION:
+	case IRECV_E_USB_CONFIGURATION:
 		return irecv_error_usb_configuration;
 		
 	default: