<commit_before>/**
 * iRecovery - Utility for DFU 2.0, WTF and Recovery Mode
 * Copyright (C) 2008 - 2009 westbaer
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 **/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <libusb-1.0/libusb.h>

#include "libirecovery.h"

#define BUFFER_SIZE 0x1000
#define debug(...) if(client->debug) fprintf(stderr, __VA_ARGS__)

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_error_t irecv_open(irecv_client_t* pclient) {
	int i = 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;

	*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);
		if (usb_descriptor.idVendor == APPLE_VENDOR_ID) {
			/* verify this device is in a mode we understand */
			if (usb_descriptor.idProduct == kRecoveryMode1 ||
				usb_descriptor.idProduct == kRecoveryMode2 ||
				usb_descriptor.idProduct == kRecoveryMode3 ||
				usb_descriptor.idProduct == kRecoveryMode4 ||
				usb_descriptor.idProduct == kDfuMode) {

				libusb_open(usb_device, &usb_handle);
				if (usb_handle == NULL) {
					libusb_free_device_list(usb_device_list, 1);
					libusb_close(usb_handle);
					libusb_exit(usb_context);
					return IRECV_E_UNABLE_TO_CONNECT;
				}
				libusb_set_debug(usb_context, 3);

				libusb_free_device_list(usb_device_list, 0);

				irecv_client_t client = (irecv_client_t) malloc(sizeof(struct irecv_client));
				if (client == NULL) {
					libusb_close(usb_handle);
					libusb_exit(usb_context);
					return IRECV_E_OUT_OF_MEMORY;
				}
				memset(client, '\0', sizeof(struct irecv_client));
				client->interface = -1;
				client->handle = usb_handle;
				client->context = usb_context;
				client->mode = usb_descriptor.idProduct;

				error = irecv_set_configuration(client, 1);
				if(error != IRECV_E_SUCCESS) {
					return error;
				}

				*pclient = client;
				return IRECV_E_SUCCESS;
			}
		}
	}

	return IRECV_E_UNABLE_TO_CONNECT;
}

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(client->handle, &current);
	if(current != configuration) {
		if (libusb_set_configuration(client->handle, configuration) < 0) {
			return IRECV_E_USB_CONFIGURATION;
		}
	}
	
	client->config = configuration;
	return IRECV_E_SUCCESS;
}

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(client->interface == interface) {
		return IRECV_E_SUCCESS;
	}

	debug("Setting to interface %d:%d", interface, alt_interface);
	if (libusb_claim_interface(client->handle, interface) < 0) {
		return IRECV_E_USB_INTERFACE;
	}
	
	if(libusb_set_interface_alt_setting(client->handle, interface, alt_interface) < 0) {
		return IRECV_E_USB_INTERFACE;
	}
	
	client->interface = interface;
	client->alt_interface = alt_interface;
	return IRECV_E_SUCCESS;
}

irecv_error_t irecv_reset(irecv_client_t client) {
	if (client == NULL || client->handle == NULL) {
		return IRECV_E_NO_DEVICE;
	}

	libusb_reset_device(client->handle);
	return IRECV_E_SUCCESS;
}

irecv_error_t irecv_close(irecv_client_t client) {
	if (client != NULL) {
		if (client->handle != NULL) {
			if(client->interface >= 0) {
				libusb_release_interface(client->handle, client->interface);
			}
			libusb_close(client->handle);
			client->handle = NULL;
		}

		if (client->context != NULL) {
			libusb_exit(NULL);
			client->context = NULL;
		}

		free(client);
		client = NULL;
	}

	return IRECV_E_SUCCESS;
}

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(client->context, level);
	client->debug = level;
	return IRECV_E_SUCCESS;
}
<commit_msg>ooops forgot to cleanup usb context<commit_after>/**
 * iRecovery - Utility for DFU 2.0, WTF and Recovery Mode
 * Copyright (C) 2008 - 2009 westbaer
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 **/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <libusb-1.0/libusb.h>

#include "libirecovery.h"

#define BUFFER_SIZE 0x1000
#define debug(...) if(client->debug) fprintf(stderr, __VA_ARGS__)

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_error_t irecv_open(irecv_client_t* pclient) {
	int i = 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;

	*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);
		if (usb_descriptor.idVendor == APPLE_VENDOR_ID) {
			/* verify this device is in a mode we understand */
			if (usb_descriptor.idProduct == kRecoveryMode1 ||
				usb_descriptor.idProduct == kRecoveryMode2 ||
				usb_descriptor.idProduct == kRecoveryMode3 ||
				usb_descriptor.idProduct == kRecoveryMode4 ||
				usb_descriptor.idProduct == kDfuMode) {

				libusb_open(usb_device, &usb_handle);
				if (usb_handle == NULL) {
					libusb_free_device_list(usb_device_list, 1);
					libusb_close(usb_handle);
					libusb_exit(usb_context);
					return IRECV_E_UNABLE_TO_CONNECT;
				}
				libusb_set_debug(usb_context, 3);

				libusb_free_device_list(usb_device_list, 0);

				irecv_client_t client = (irecv_client_t) malloc(sizeof(struct irecv_client));
				if (client == NULL) {
					libusb_close(usb_handle);
					libusb_exit(usb_context);
					return IRECV_E_OUT_OF_MEMORY;
				}
				memset(client, '\0', sizeof(struct irecv_client));
				client->interface = -1;
				client->handle = usb_handle;
				client->context = usb_context;
				client->mode = usb_descriptor.idProduct;

				error = irecv_set_configuration(client, 1);
				if(error != IRECV_E_SUCCESS) {
					return error;
				}

				*pclient = client;
				return IRECV_E_SUCCESS;
			}
		}
	}

	return IRECV_E_UNABLE_TO_CONNECT;
}

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(client->handle, &current);
	if(current != configuration) {
		if (libusb_set_configuration(client->handle, configuration) < 0) {
			return IRECV_E_USB_CONFIGURATION;
		}
	}
	
	client->config = configuration;
	return IRECV_E_SUCCESS;
}

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(client->interface == interface) {
		return IRECV_E_SUCCESS;
	}

	debug("Setting to interface %d:%d", interface, alt_interface);
	if (libusb_claim_interface(client->handle, interface) < 0) {
		return IRECV_E_USB_INTERFACE;
	}
	
	if(libusb_set_interface_alt_setting(client->handle, interface, alt_interface) < 0) {
		return IRECV_E_USB_INTERFACE;
	}
	
	client->interface = interface;
	client->alt_interface = alt_interface;
	return IRECV_E_SUCCESS;
}

irecv_error_t irecv_reset(irecv_client_t client) {
	if (client == NULL || client->handle == NULL) {
		return IRECV_E_NO_DEVICE;
	}

	libusb_reset_device(client->handle);
	return IRECV_E_SUCCESS;
}

irecv_error_t irecv_close(irecv_client_t client) {
	if (client != NULL) {
		if (client->handle != NULL) {
			if(client->interface >= 0) {
				libusb_release_interface(client->handle, client->interface);
			}
			libusb_close(client->handle);
			client->handle = NULL;
		}

		if (client->context != NULL) {
			libusb_exit(client->context);
			client->context = NULL;
		}

		free(client);
		client = NULL;
	}

	return IRECV_E_SUCCESS;
}

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(client->context, level);
	client->debug = level;
	return IRECV_E_SUCCESS;
}

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