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/*
* service.c
* generic service implementation.
*
* Copyright (c) 2013 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
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdlib.h>
#include <string.h>
#include "service.h"
#include "idevice.h"
#include "common/debug.h"
/**
* Convert an idevice_error_t value to an service_error_t value.
* Used internally to get correct error codes.
*
* @param err An idevice_error_t error code
*
* @return A matching service_error_t error code,
* SERVICE_E_UNKNOWN_ERROR otherwise.
*/
static service_error_t idevice_to_service_error(idevice_error_t err)
{
switch (err) {
case IDEVICE_E_SUCCESS:
return SERVICE_E_SUCCESS;
case IDEVICE_E_INVALID_ARG:
return SERVICE_E_INVALID_ARG;
case IDEVICE_E_SSL_ERROR:
return SERVICE_E_SSL_ERROR;
case IDEVICE_E_NOT_ENOUGH_DATA:
return SERVICE_E_NOT_ENOUGH_DATA;
case IDEVICE_E_TIMEOUT:
return SERVICE_E_TIMEOUT;
default:
break;
}
return SERVICE_E_UNKNOWN_ERROR;
}
service_error_t service_client_new(idevice_t device, lockdownd_service_descriptor_t service, service_client_t *client)
{
if (!device || !service || service->port == 0 || !client || *client)
return SERVICE_E_INVALID_ARG;
/* Attempt connection */
idevice_connection_t connection = NULL;
if (idevice_connect(device, service->port, &connection) != IDEVICE_E_SUCCESS) {
return SERVICE_E_MUX_ERROR;
}
/* create client object */
service_client_t client_loc = (service_client_t)malloc(sizeof(struct service_client_private));
client_loc->connection = connection;
/* enable SSL if requested */
if (service->ssl_enabled == 1)
service_enable_ssl(client_loc);
/* all done, return success */
*client = client_loc;
return SERVICE_E_SUCCESS;
}
service_error_t service_client_factory_start_service(idevice_t device, const char* service_name, void **client, const char* label, int32_t (*constructor_func)(idevice_t, lockdownd_service_descriptor_t, void**), int32_t *error_code)
{
*client = NULL;
lockdownd_client_t lckd = NULL;
if (LOCKDOWN_E_SUCCESS != lockdownd_client_new_with_handshake(device, &lckd, label)) {
debug_info("Could not create a lockdown client.");
return SERVICE_E_START_SERVICE_ERROR;
}
lockdownd_service_descriptor_t service = NULL;
lockdownd_error_t lerr = lockdownd_start_service(lckd, service_name, &service);
lockdownd_client_free(lckd);
if (lerr != LOCKDOWN_E_SUCCESS) {
debug_info("Could not start service %s: %s", service_name, lockdownd_strerror(lerr));
return SERVICE_E_START_SERVICE_ERROR;
}
int32_t ec;
if (constructor_func) {
ec = (int32_t)constructor_func(device, service, client);
} else {
ec = service_client_new(device, service, (service_client_t*)client);
}
if (error_code) {
*error_code = ec;
}
if (ec != SERVICE_E_SUCCESS) {
debug_info("Could not connect to service %s! Port: %i, error: %i", service_name, service->port, ec);
}
lockdownd_service_descriptor_free(service);
service = NULL;
return (ec == SERVICE_E_SUCCESS) ? SERVICE_E_SUCCESS : SERVICE_E_START_SERVICE_ERROR;
}
service_error_t service_client_free(service_client_t client)
{
if (!client)
return SERVICE_E_INVALID_ARG;
service_error_t err = idevice_to_service_error(idevice_disconnect(client->connection));
free(client);
client = NULL;
return err;
}
service_error_t service_send(service_client_t client, const char* data, uint32_t size, uint32_t *sent)
{
service_error_t res = SERVICE_E_UNKNOWN_ERROR;
uint32_t bytes = 0;
if (!client || (client && !client->connection) || !data || (size == 0)) {
return SERVICE_E_INVALID_ARG;
}
debug_info("sending %d bytes", size);
res = idevice_to_service_error(idevice_connection_send(client->connection, data, size, &bytes));
if (res != SERVICE_E_SUCCESS) {
debug_info("ERROR: sending to device failed.");
}
if (sent) {
*sent = bytes;
}
return res;
}
service_error_t service_receive_with_timeout(service_client_t client, char* data, uint32_t size, uint32_t *received, unsigned int timeout)
{
service_error_t res = SERVICE_E_UNKNOWN_ERROR;
uint32_t bytes = 0;
if (!client || (client && !client->connection) || !data || (size == 0)) {
return SERVICE_E_INVALID_ARG;
}
res = idevice_to_service_error(idevice_connection_receive_timeout(client->connection, data, size, &bytes, timeout));
if (res != SERVICE_E_SUCCESS && res != SERVICE_E_TIMEOUT) {
debug_info("could not read data");
return res;
}
if (received) {
*received = bytes;
}
return res;
}
service_error_t service_receive(service_client_t client, char* data, uint32_t size, uint32_t *received)
{
return service_receive_with_timeout(client, data, size, received, 30000);
}
service_error_t service_enable_ssl(service_client_t client)
{
if (!client || !client->connection)
return SERVICE_E_INVALID_ARG;
return idevice_to_service_error(idevice_connection_enable_ssl(client->connection));
}
service_error_t service_disable_ssl(service_client_t client)
{
return service_disable_bypass_ssl(client, 0);
}
service_error_t service_disable_bypass_ssl(service_client_t client, uint8_t sslBypass)
{
if (!client || !client->connection)
return SERVICE_E_INVALID_ARG;
return idevice_to_service_error(idevice_connection_disable_bypass_ssl(client->connection, sslBypass));
}
service_error_t service_get_connection(service_client_t client, idevice_connection_t *connection)
{
if (!client || !client->connection || !connection)
return SERVICE_E_INVALID_ARG;
*connection = client->connection;
return SERVICE_E_SUCCESS;
}
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