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/**
 * @file libimobiledevice/file_relay.h
 * @brief Retrieve compressed CPIO archives.
 * \internal
 *
 * Copyright (c) 2010-2014 Martin Szulecki All Rights Reserved.
 * Copyright (c) 2014 Aaron Burghardt All Rights Reserved.
 * Copyright (c) 2010 Nikias Bassen All Rights Reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

#ifndef IFILE_RELAY_H
#define IFILE_RELAY_H

#ifdef __cplusplus
extern "C" {
#endif

#include <libimobiledevice/libimobiledevice.h>
#include <libimobiledevice/lockdown.h>

/** Service identifier passed to lockdownd_start_service() to start the file relay service */
#define FILE_RELAY_SERVICE_NAME "com.apple.mobile.file_relay"

/** Error Codes */
typedef enum {
	FILE_RELAY_E_SUCCESS           =  0,
	FILE_RELAY_E_INVALID_ARG       = -1,
	FILE_RELAY_E_PLIST_ERROR       = -2,
	FILE_RELAY_E_MUX_ERROR         = -3,
	FILE_RELAY_E_INVALID_SOURCE    = -4,
	FILE_RELAY_E_STAGING_EMPTY     = -5,
	FILE_RELAY_E_PERMISSION_DENIED = -6,
	FILE_RELAY_E_UNKNOWN_ERROR     = -256
} file_relay_error_t;

typedef struct file_relay_client_private file_relay_client_private; /**< \private */
typedef file_relay_client_private *file_relay_client_t; /**< The client handle. */

/**
 * Connects to the file_relay service on the specified device.
 *
 * @param device The device to connect to.
 * @param service The service descriptor returned by lockdownd_start_service.
 * @param client Reference that will point to a newly allocated
 *     file_relay_client_t upon successful return.
 *
 * @return FILE_RELAY_E_SUCCESS on success,
 *     FILE_RELAY_E_INVALID_ARG when one of the parameters is invalid,
 *     or FILE_RELAY_E_MUX_ERROR when the connection failed.
 */
file_relay_error_t file_relay_client_new(idevice_t device, lockdownd_service_descriptor_t service, file_relay_client_t *client);

/**
 * Starts a new file_relay service on the specified device and connects to it.
 *
 * @param device The device to connect to.
 * @param client Pointer that will point to a newly allocated
 *     file_relay_client_t upon successful return. Must be freed using
 *     file_relay_client_free() after use.
 * @param label The label to use for communication. Usually the program name.
 *  Pass NULL to disable sending the label in requests to lockdownd.
 *
 * @return FILE_RELAY_E_SUCCESS on success, or an FILE_RELAY_E_* error
 *     code otherwise.
 */
file_relay_error_t file_relay_client_start_service(idevice_t device, file_relay_client_t* client, const char* label);

/**
 * Disconnects a file_relay client from the device and frees up the file_relay
 * client data.
 *
 * @param client The file_relay client to disconnect and free.
 *
 * @return FILE_RELAY_E_SUCCESS on success,
 *     FILE_RELAY_E_INVALID_ARG when one of client or client->parent
 *     is invalid, or FILE_RELAY_E_UNKNOWN_ERROR when the was an error
 *     freeing the parent property_list_service client.
 */
file_relay_error_t file_relay_client_free(file_relay_client_t client);


/**
 * Request data for the given sources.
 *
 * @param client The connected file_relay client.
 * @param sources A NULL-terminated list of sources to retrieve.
 *     Valid sources are:
 *     - AppleSupport
 *     - Network
 *     - VPN
 *     - WiFi
 *     - UserDatabases
 *     - CrashReporter
 *     - tmp
 *     - SystemConfiguration
 * @param connection The connection that has to be used for receiving the
 *     data using idevice_connection_receive(). The connection will be closed
 *     automatically by the device, but use file_relay_client_free() to clean
 *     up properly.
  *
 * @note WARNING: Don't call this function without reading the data afterwards.
 *     A directory mobile_file_relay.XXXX used for creating the archive will
 *     remain in the /tmp directory otherwise.
 *
 * @return FILE_RELAY_E_SUCCESS on succes, FILE_RELAY_E_INVALID_ARG when one or
 *     more parameters are invalid, FILE_RELAY_E_MUX_ERROR if a communication
 *     error occurs, FILE_RELAY_E_PLIST_ERROR when the received result is NULL
 *     or is not a valid plist, FILE_RELAY_E_INVALID_SOURCE if one or more
 *     sources are invalid, FILE_RELAY_E_STAGING_EMPTY if no data is available
 *     for the given sources, or FILE_RELAY_E_UNKNOWN_ERROR otherwise.
 */
file_relay_error_t file_relay_request_sources(file_relay_client_t client, const char **sources, idevice_connection_t *connection);

/**
 * Request data for the given sources. Calls file_relay_request_sources_timeout() with
 * a timeout of 60000 milliseconds (60 seconds).
 *
 * @param client The connected file_relay client.
 * @param sources A NULL-terminated list of sources to retrieve.
 *     Valid sources are:
 *     - AppleSupport
 *     - Network
 *     - VPN
 *     - WiFi
 *     - UserDatabases
 *     - CrashReporter
 *     - tmp
 *     - SystemConfiguration
 * @param connection The connection that has to be used for receiving the
 *     data using idevice_connection_receive(). The connection will be closed
 *     automatically by the device, but use file_relay_client_free() to clean
 *     up properly.
 * @param timeout Maximum time in milliseconds to wait for data.
 *
 * @note WARNING: Don't call this function without reading the data afterwards.
 *     A directory mobile_file_relay.XXXX used for creating the archive will
 *     remain in the /tmp directory otherwise.
 *
 * @return FILE_RELAY_E_SUCCESS on succes, FILE_RELAY_E_INVALID_ARG when one or
 *     more parameters are invalid, FILE_RELAY_E_MUX_ERROR if a communication
 *     error occurs, FILE_RELAY_E_PLIST_ERROR when the received result is NULL
 *     or is not a valid plist, FILE_RELAY_E_INVALID_SOURCE if one or more
 *     sources are invalid, FILE_RELAY_E_STAGING_EMPTY if no data is available
 *     for the given sources, or FILE_RELAY_E_UNKNOWN_ERROR otherwise.
 */
file_relay_error_t file_relay_request_sources_timeout(file_relay_client_t client, const char **sources, idevice_connection_t *connection, unsigned int timeout);

#ifdef __cplusplus
}
#endif

#endif