blob: 5df8e8605f0db146be4d5d26fc4ac2c28a4a058a [file] [log] [blame]
/*
* mobile_image_mounter.c
* com.apple.mobile.mobile_image_mounter service implementation.
*
* Copyright (c) 2010-2019 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 <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <plist/plist.h>
#include "mobile_image_mounter.h"
#include "property_list_service.h"
#include "common/debug.h"
/**
* Locks a mobile_image_mounter client, used for thread safety.
*
* @param client mobile_image_mounter client to lock
*/
static void mobile_image_mounter_lock(mobile_image_mounter_client_t client)
{
mutex_lock(&client->mutex);
}
/**
* Unlocks a mobile_image_mounter client, used for thread safety.
*
* @param client mobile_image_mounter client to unlock
*/
static void mobile_image_mounter_unlock(mobile_image_mounter_client_t client)
{
mutex_unlock(&client->mutex);
}
/**
* Convert a property_list_service_error_t value to a
* mobile_image_mounter_error_t value.
* Used internally to get correct error codes.
*
* @param err A property_list_service_error_t error code
*
* @return A matching mobile_image_mounter_error_t error code,
* MOBILE_IMAGE_MOUNTER_E_UNKNOWN_ERROR otherwise.
*/
static mobile_image_mounter_error_t mobile_image_mounter_error(property_list_service_error_t err)
{
switch (err) {
case PROPERTY_LIST_SERVICE_E_SUCCESS:
return MOBILE_IMAGE_MOUNTER_E_SUCCESS;
case PROPERTY_LIST_SERVICE_E_INVALID_ARG:
return MOBILE_IMAGE_MOUNTER_E_INVALID_ARG;
case PROPERTY_LIST_SERVICE_E_PLIST_ERROR:
return MOBILE_IMAGE_MOUNTER_E_PLIST_ERROR;
case PROPERTY_LIST_SERVICE_E_MUX_ERROR:
return MOBILE_IMAGE_MOUNTER_E_CONN_FAILED;
default:
break;
}
return MOBILE_IMAGE_MOUNTER_E_UNKNOWN_ERROR;
}
mobile_image_mounter_error_t mobile_image_mounter_new(idevice_t device, lockdownd_service_descriptor_t service, mobile_image_mounter_client_t *client)
{
property_list_service_client_t plistclient = NULL;
mobile_image_mounter_error_t err = mobile_image_mounter_error(property_list_service_client_new(device, service, &plistclient));
if (err != MOBILE_IMAGE_MOUNTER_E_SUCCESS) {
return err;
}
mobile_image_mounter_client_t client_loc = (mobile_image_mounter_client_t) malloc(sizeof(struct mobile_image_mounter_client_private));
client_loc->parent = plistclient;
mutex_init(&client_loc->mutex);
*client = client_loc;
return MOBILE_IMAGE_MOUNTER_E_SUCCESS;
}
mobile_image_mounter_error_t mobile_image_mounter_start_service(idevice_t device, mobile_image_mounter_client_t * client, const char* label)
{
mobile_image_mounter_error_t err = MOBILE_IMAGE_MOUNTER_E_UNKNOWN_ERROR;
service_client_factory_start_service(device, MOBILE_IMAGE_MOUNTER_SERVICE_NAME, (void**)client, label, SERVICE_CONSTRUCTOR(mobile_image_mounter_new), &err);
return err;
}
mobile_image_mounter_error_t mobile_image_mounter_free(mobile_image_mounter_client_t client)
{
if (!client)
return MOBILE_IMAGE_MOUNTER_E_INVALID_ARG;
property_list_service_client_free(client->parent);
client->parent = NULL;
mutex_destroy(&client->mutex);
free(client);
return MOBILE_IMAGE_MOUNTER_E_SUCCESS;
}
mobile_image_mounter_error_t mobile_image_mounter_lookup_image(mobile_image_mounter_client_t client, const char *image_type, plist_t *result)
{
if (!client || !image_type || !result) {
return MOBILE_IMAGE_MOUNTER_E_INVALID_ARG;
}
mobile_image_mounter_lock(client);
plist_t dict = plist_new_dict();
plist_dict_set_item(dict,"Command", plist_new_string("LookupImage"));
plist_dict_set_item(dict,"ImageType", plist_new_string(image_type));
mobile_image_mounter_error_t res = mobile_image_mounter_error(property_list_service_send_xml_plist(client->parent, dict));
plist_free(dict);
if (res != MOBILE_IMAGE_MOUNTER_E_SUCCESS) {
debug_info("%s: Error sending XML plist to device!", __func__);
goto leave_unlock;
}
res = mobile_image_mounter_error(property_list_service_receive_plist(client->parent, result));
if (res != MOBILE_IMAGE_MOUNTER_E_SUCCESS) {
debug_info("%s: Error receiving response from device!", __func__);
}
leave_unlock:
mobile_image_mounter_unlock(client);
return res;
}
static mobile_image_mounter_error_t process_result(plist_t result, const char *expected_status)
{
mobile_image_mounter_error_t res = MOBILE_IMAGE_MOUNTER_E_COMMAND_FAILED;
char* strval = NULL;
plist_t node;
node = plist_dict_get_item(result, "Error");
if (node && plist_get_node_type(node) == PLIST_STRING) {
plist_get_string_val(node, &strval);
}
if (strval) {
if (!strcmp(strval, "DeviceLocked")) {
debug_info("Device is locked, can't mount");
res = MOBILE_IMAGE_MOUNTER_E_DEVICE_LOCKED;
} else {
debug_info("Unhandled error '%s' received", strval);
}
free(strval);
return res;
}
node = plist_dict_get_item(result, "Status");
if (node && plist_get_node_type(node) == PLIST_STRING) {
plist_get_string_val(node, &strval);
}
if (!strval) {
debug_info("Error: Unexpected response received!");
} else if (strcmp(strval, expected_status) == 0) {
res = MOBILE_IMAGE_MOUNTER_E_SUCCESS;
} else {
debug_info("Error: didn't get %s but %s", expected_status, strval);
}
free(strval);
return res;
}
mobile_image_mounter_error_t mobile_image_mounter_upload_image(mobile_image_mounter_client_t client, const char *image_type, size_t image_size, const char *signature, uint16_t signature_size, mobile_image_mounter_upload_cb_t upload_cb, void* userdata)
{
if (!client || !image_type || (image_size == 0) || !upload_cb) {
return MOBILE_IMAGE_MOUNTER_E_INVALID_ARG;
}
mobile_image_mounter_lock(client);
plist_t result = NULL;
plist_t dict = plist_new_dict();
plist_dict_set_item(dict, "Command", plist_new_string("ReceiveBytes"));
if (signature && signature_size != 0)
plist_dict_set_item(dict, "ImageSignature", plist_new_data(signature, signature_size));
plist_dict_set_item(dict, "ImageSize", plist_new_uint(image_size));
plist_dict_set_item(dict, "ImageType", plist_new_string(image_type));
mobile_image_mounter_error_t res = mobile_image_mounter_error(property_list_service_send_xml_plist(client->parent, dict));
plist_free(dict);
if (res != MOBILE_IMAGE_MOUNTER_E_SUCCESS) {
debug_info("Error sending XML plist to device!");
goto leave_unlock;
}
res = mobile_image_mounter_error(property_list_service_receive_plist(client->parent, &result));
if (res != MOBILE_IMAGE_MOUNTER_E_SUCCESS) {
debug_info("Error receiving response from device!");
goto leave_unlock;
}
res = process_result(result, "ReceiveBytesAck");
if (res != MOBILE_IMAGE_MOUNTER_E_SUCCESS) {
goto leave_unlock;
}
size_t tx = 0;
size_t bufsize = 65536;
unsigned char *buf = (unsigned char*)malloc(bufsize);
if (!buf) {
debug_info("Out of memory");
res = MOBILE_IMAGE_MOUNTER_E_UNKNOWN_ERROR;
goto leave_unlock;
}
debug_info("uploading image (%d bytes)", (int)image_size);
while (tx < image_size) {
size_t remaining = image_size - tx;
size_t amount = (remaining < bufsize) ? remaining : bufsize;
ssize_t r = upload_cb(buf, amount, userdata);
if (r < 0) {
debug_info("upload_cb returned %d", (int)r);
break;
}
uint32_t sent = 0;
if (service_send(client->parent->parent, (const char*)buf, (uint32_t)r, &sent) != SERVICE_E_SUCCESS) {
debug_info("service_send failed");
break;
}
tx += r;
}
free(buf);
if (tx < image_size) {
debug_info("Error: failed to upload image");
goto leave_unlock;
}
debug_info("image uploaded");
res = mobile_image_mounter_error(property_list_service_receive_plist(client->parent, &result));
if (res != MOBILE_IMAGE_MOUNTER_E_SUCCESS) {
debug_info("Error receiving response from device!");
goto leave_unlock;
}
res = process_result(result, "Complete");
leave_unlock:
mobile_image_mounter_unlock(client);
if (result)
plist_free(result);
return res;
}
mobile_image_mounter_error_t mobile_image_mounter_mount_image(mobile_image_mounter_client_t client, const char *image_path, const char *signature, uint16_t signature_size, const char *image_type, plist_t *result)
{
if (!client || !image_path || !image_type || !result) {
return MOBILE_IMAGE_MOUNTER_E_INVALID_ARG;
}
mobile_image_mounter_lock(client);
plist_t dict = plist_new_dict();
plist_dict_set_item(dict, "Command", plist_new_string("MountImage"));
plist_dict_set_item(dict, "ImagePath", plist_new_string(image_path));
if (signature && signature_size != 0)
plist_dict_set_item(dict, "ImageSignature", plist_new_data(signature, signature_size));
plist_dict_set_item(dict, "ImageType", plist_new_string(image_type));
mobile_image_mounter_error_t res = mobile_image_mounter_error(property_list_service_send_xml_plist(client->parent, dict));
plist_free(dict);
if (res != MOBILE_IMAGE_MOUNTER_E_SUCCESS) {
debug_info("%s: Error sending XML plist to device!", __func__);
goto leave_unlock;
}
res = mobile_image_mounter_error(property_list_service_receive_plist(client->parent, result));
if (res != MOBILE_IMAGE_MOUNTER_E_SUCCESS) {
debug_info("%s: Error receiving response from device!", __func__);
}
leave_unlock:
mobile_image_mounter_unlock(client);
return res;
}
mobile_image_mounter_error_t mobile_image_mounter_hangup(mobile_image_mounter_client_t client)
{
if (!client) {
return MOBILE_IMAGE_MOUNTER_E_INVALID_ARG;
}
mobile_image_mounter_lock(client);
plist_t dict = plist_new_dict();
plist_dict_set_item(dict, "Command", plist_new_string("Hangup"));
mobile_image_mounter_error_t res = mobile_image_mounter_error(property_list_service_send_xml_plist(client->parent, dict));
plist_free(dict);
if (res != MOBILE_IMAGE_MOUNTER_E_SUCCESS) {
debug_info("%s: Error sending XML plist to device!", __func__);
goto leave_unlock;
}
dict = NULL;
res = mobile_image_mounter_error(property_list_service_receive_plist(client->parent, &dict));
if (res != MOBILE_IMAGE_MOUNTER_E_SUCCESS) {
debug_info("%s: Error receiving response from device!", __func__);
}
if (dict) {
debug_plist(dict);
plist_free(dict);
}
leave_unlock:
mobile_image_mounter_unlock(client);
return res;
}