| /* |
| * companion_proxy.c |
| * com.apple.companion_proxy service implementation. |
| * |
| * Copyright (c) 2019-2020 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 <plist/plist.h> |
| |
| #include "companion_proxy.h" |
| #include "lockdown.h" |
| #include "common/debug.h" |
| |
| /** |
| * Convert a property_list_service_error_t value to a companion_proxy_error_t value. |
| * Used internally to get correct error codes. |
| * |
| * @param err An property_list_service_error_t error code |
| * |
| * @return A matching companion_proxy_error_t error code, |
| * COMPANION_PROXY_E_UNKNOWN_ERROR otherwise. |
| */ |
| static companion_proxy_error_t companion_proxy_error(property_list_service_error_t err) |
| { |
| switch (err) { |
| case PROPERTY_LIST_SERVICE_E_SUCCESS: |
| return COMPANION_PROXY_E_SUCCESS; |
| case PROPERTY_LIST_SERVICE_E_INVALID_ARG: |
| return COMPANION_PROXY_E_INVALID_ARG; |
| case PROPERTY_LIST_SERVICE_E_PLIST_ERROR: |
| return COMPANION_PROXY_E_PLIST_ERROR; |
| case PROPERTY_LIST_SERVICE_E_MUX_ERROR: |
| return COMPANION_PROXY_E_MUX_ERROR; |
| case PROPERTY_LIST_SERVICE_E_SSL_ERROR: |
| return COMPANION_PROXY_E_SSL_ERROR; |
| case PROPERTY_LIST_SERVICE_E_NOT_ENOUGH_DATA: |
| return COMPANION_PROXY_E_NOT_ENOUGH_DATA; |
| case PROPERTY_LIST_SERVICE_E_RECEIVE_TIMEOUT: |
| return COMPANION_PROXY_E_TIMEOUT; |
| default: |
| break; |
| } |
| return COMPANION_PROXY_E_UNKNOWN_ERROR; |
| } |
| |
| LIBIMOBILEDEVICE_API companion_proxy_error_t companion_proxy_client_new(idevice_t device, lockdownd_service_descriptor_t service, companion_proxy_client_t * client) |
| { |
| *client = NULL; |
| |
| if (!device || !service || service->port == 0 || !client || *client) { |
| debug_info("Incorrect parameter passed to companion_proxy_client_new."); |
| return COMPANION_PROXY_E_INVALID_ARG; |
| } |
| |
| debug_info("Creating companion_proxy_client, port = %d.", service->port); |
| |
| property_list_service_client_t plclient = NULL; |
| companion_proxy_error_t ret = companion_proxy_error(property_list_service_client_new(device, service, &plclient)); |
| if (ret != COMPANION_PROXY_E_SUCCESS) { |
| debug_info("Creating a property list client failed. Error: %i", ret); |
| return ret; |
| } |
| |
| companion_proxy_client_t client_loc = (companion_proxy_client_t) malloc(sizeof(struct companion_proxy_client_private)); |
| client_loc->parent = plclient; |
| client_loc->event_thread = THREAD_T_NULL; |
| |
| *client = client_loc; |
| |
| debug_info("Created companion_proxy_client successfully."); |
| return COMPANION_PROXY_E_SUCCESS; |
| } |
| |
| LIBIMOBILEDEVICE_API companion_proxy_error_t companion_proxy_client_start_service(idevice_t device, companion_proxy_client_t * client, const char* label) |
| { |
| companion_proxy_error_t err = COMPANION_PROXY_E_UNKNOWN_ERROR; |
| service_client_factory_start_service(device, COMPANION_PROXY_SERVICE_NAME, (void**)client, label, SERVICE_CONSTRUCTOR(companion_proxy_client_new), &err); |
| return err; |
| } |
| |
| LIBIMOBILEDEVICE_API companion_proxy_error_t companion_proxy_client_free(companion_proxy_client_t client) |
| { |
| if (!client) |
| return COMPANION_PROXY_E_INVALID_ARG; |
| |
| property_list_service_client_t parent = client->parent; |
| client->parent = NULL; |
| if (client->event_thread) { |
| debug_info("joining event thread"); |
| thread_join(client->event_thread); |
| thread_free(client->event_thread); |
| client->event_thread = THREAD_T_NULL; |
| } |
| companion_proxy_error_t err = companion_proxy_error(property_list_service_client_free(parent)); |
| free(client); |
| |
| return err; |
| } |
| |
| LIBIMOBILEDEVICE_API companion_proxy_error_t companion_proxy_send(companion_proxy_client_t client, plist_t plist) |
| { |
| companion_proxy_error_t res = COMPANION_PROXY_E_UNKNOWN_ERROR; |
| |
| res = companion_proxy_error(property_list_service_send_binary_plist(client->parent, plist)); |
| if (res != COMPANION_PROXY_E_SUCCESS) { |
| debug_info("Sending plist failed with error %d", res); |
| return res; |
| } |
| |
| return res; |
| } |
| |
| LIBIMOBILEDEVICE_API companion_proxy_error_t companion_proxy_receive(companion_proxy_client_t client, plist_t * plist) |
| { |
| companion_proxy_error_t res = COMPANION_PROXY_E_UNKNOWN_ERROR; |
| plist_t outplist = NULL; |
| res = companion_proxy_error(property_list_service_receive_plist_with_timeout(client->parent, &outplist, 10000)); |
| if (res != COMPANION_PROXY_E_SUCCESS && res != COMPANION_PROXY_E_TIMEOUT) { |
| debug_info("Could not receive plist, error %d", res); |
| plist_free(outplist); |
| } else if (res == COMPANION_PROXY_E_SUCCESS) { |
| *plist = outplist; |
| } |
| return res; |
| } |
| |
| LIBIMOBILEDEVICE_API companion_proxy_error_t companion_proxy_get_device_registry(companion_proxy_client_t client, plist_t* paired_devices) |
| { |
| if (!client || !paired_devices) { |
| return COMPANION_PROXY_E_INVALID_ARG; |
| } |
| |
| plist_t dict = plist_new_dict(); |
| plist_dict_set_item(dict, "Command", plist_new_string("GetDeviceRegistry")); |
| |
| companion_proxy_error_t res = companion_proxy_send(client, dict); |
| plist_free(dict); |
| dict = NULL; |
| if (res != COMPANION_PROXY_E_SUCCESS) { |
| return res; |
| } |
| |
| res = companion_proxy_receive(client, &dict); |
| if (res != COMPANION_PROXY_E_SUCCESS) { |
| return res; |
| } |
| if (!dict || !PLIST_IS_DICT(dict)) { |
| return COMPANION_PROXY_E_PLIST_ERROR; |
| } |
| plist_t val = plist_dict_get_item(dict, "PairedDevicesArray"); |
| if (val) { |
| *paired_devices = plist_copy(val); |
| res = COMPANION_PROXY_E_SUCCESS; |
| } else { |
| res = COMPANION_PROXY_E_UNKNOWN_ERROR; |
| val = plist_dict_get_item(dict, "Error"); |
| if (val) { |
| if (plist_string_val_compare(val, "NoPairedWatches")) { |
| res = COMPANION_PROXY_E_NO_DEVICES; |
| } |
| } |
| } |
| plist_free(dict); |
| return res; |
| } |
| |
| struct companion_proxy_cb_data { |
| companion_proxy_client_t client; |
| companion_proxy_device_event_cb_t cbfunc; |
| void* user_data; |
| }; |
| |
| static void* companion_proxy_event_thread(void* arg) |
| { |
| struct companion_proxy_cb_data* data = (struct companion_proxy_cb_data*)arg; |
| companion_proxy_client_t client = data->client; |
| companion_proxy_error_t res; |
| |
| plist_t command = plist_new_dict(); |
| plist_dict_set_item(command, "Command", plist_new_string("StartListeningForDevices")); |
| res = companion_proxy_send(client, command); |
| plist_free(command); |
| |
| if (res != COMPANION_PROXY_E_SUCCESS) { |
| free(data); |
| client->event_thread = THREAD_T_NULL; |
| return NULL; |
| } |
| |
| while (client && client->parent) { |
| plist_t node = NULL; |
| res = companion_proxy_error(property_list_service_receive_plist_with_timeout(client->parent, &node, 1000)); |
| if (res != COMPANION_PROXY_E_SUCCESS && res != COMPANION_PROXY_E_TIMEOUT) { |
| debug_info("could not receive plist, error %d", res); |
| break; |
| } |
| |
| if (node) { |
| data->cbfunc(node, data->user_data); |
| } |
| plist_free(node); |
| } |
| |
| client->event_thread = THREAD_T_NULL; |
| free(data); |
| |
| return NULL; |
| } |
| |
| LIBIMOBILEDEVICE_API companion_proxy_error_t companion_proxy_start_listening_for_devices(companion_proxy_client_t client, companion_proxy_device_event_cb_t callback, void* userdata) |
| { |
| if (!client || !client->parent || !callback) { |
| return COMPANION_PROXY_E_INVALID_ARG; |
| } |
| |
| if (client->event_thread) { |
| return COMPANION_PROXY_E_OP_IN_PROGRESS; |
| } |
| |
| companion_proxy_error_t res = COMPANION_PROXY_E_UNKNOWN_ERROR; |
| struct companion_proxy_cb_data *data = (struct companion_proxy_cb_data*)malloc(sizeof(struct companion_proxy_cb_data)); |
| if (data) { |
| data->client = client; |
| data->cbfunc = callback; |
| data->user_data = userdata; |
| |
| if (thread_new(&client->event_thread, companion_proxy_event_thread, data) == 0) { |
| res = COMPANION_PROXY_E_SUCCESS; |
| } else { |
| free(data); |
| } |
| } |
| return res; |
| } |
| |
| LIBIMOBILEDEVICE_API companion_proxy_error_t companion_proxy_stop_listening_for_devices(companion_proxy_client_t client) |
| { |
| property_list_service_client_t parent = client->parent; |
| client->parent = NULL; |
| if (client->event_thread) { |
| debug_info("joining event thread"); |
| thread_join(client->event_thread); |
| thread_free(client->event_thread); |
| client->event_thread = THREAD_T_NULL; |
| } |
| client->parent = parent; |
| return COMPANION_PROXY_E_SUCCESS; |
| } |
| |
| LIBIMOBILEDEVICE_API companion_proxy_error_t companion_proxy_get_value_from_registry(companion_proxy_client_t client, const char* companion_udid, const char* key, plist_t* value) |
| { |
| if (!client || !companion_udid || !key || !value) { |
| return COMPANION_PROXY_E_INVALID_ARG; |
| } |
| |
| plist_t dict = plist_new_dict(); |
| plist_dict_set_item(dict, "Command", plist_new_string("GetValueFromRegistry")); |
| plist_dict_set_item(dict, "GetValueGizmoUDIDKey", plist_new_string(companion_udid)); |
| plist_dict_set_item(dict, "GetValueKeyKey", plist_new_string(key)); |
| |
| companion_proxy_error_t res = companion_proxy_send(client, dict); |
| plist_free(dict); |
| dict = NULL; |
| if (res != COMPANION_PROXY_E_SUCCESS) { |
| return res; |
| } |
| |
| res = companion_proxy_receive(client, &dict); |
| if (res != COMPANION_PROXY_E_SUCCESS) { |
| return res; |
| } |
| if (!dict || !PLIST_IS_DICT(dict)) { |
| return COMPANION_PROXY_E_PLIST_ERROR; |
| } |
| plist_t val = plist_dict_get_item(dict, "RetrievedValueDictionary"); |
| if (val) { |
| *value = plist_copy(val); |
| res = COMPANION_PROXY_E_SUCCESS; |
| } else { |
| res = COMPANION_PROXY_E_UNKNOWN_ERROR; |
| val = plist_dict_get_item(dict, "Error"); |
| if (val) { |
| if (!plist_string_val_compare(val, "UnsupportedWatchKey")) { |
| res = COMPANION_PROXY_E_UNSUPPORTED_KEY; |
| } else if (plist_string_val_compare(val, "TimeoutReply")) { |
| res = COMPANION_PROXY_E_TIMEOUT_REPLY; |
| } |
| } |
| } |
| plist_free(dict); |
| return res; |
| } |
| |
| LIBIMOBILEDEVICE_API companion_proxy_error_t companion_proxy_start_forwarding_service_port(companion_proxy_client_t client, uint16_t remote_port, const char* service_name, uint16_t* forward_port, plist_t options) |
| { |
| if (!client) { |
| return COMPANION_PROXY_E_INVALID_ARG; |
| } |
| |
| plist_t dict = plist_new_dict(); |
| plist_dict_set_item(dict, "Command", plist_new_string("StartForwardingServicePort")); |
| plist_dict_set_item(dict, "GizmoRemotePortNumber", plist_new_uint(remote_port)); |
| if (service_name) { |
| plist_dict_set_item(dict, "ForwardedServiceName", plist_new_string(service_name)); |
| } |
| plist_dict_set_item(dict, "IsServiceLowPriority", plist_new_bool(0)); |
| plist_dict_set_item(dict, "PreferWifi", plist_new_bool(0)); |
| if (options) { |
| plist_dict_merge(dict, options); |
| } |
| |
| companion_proxy_error_t res = companion_proxy_send(client, dict); |
| plist_free(dict); |
| dict = NULL; |
| if (res != COMPANION_PROXY_E_SUCCESS) { |
| return res; |
| } |
| |
| res = companion_proxy_receive(client, &dict); |
| if (res != COMPANION_PROXY_E_SUCCESS) { |
| return res; |
| } |
| plist_t val = plist_dict_get_item(dict, "CompanionProxyServicePort"); |
| if (val) { |
| uint64_t u64val = 0; |
| plist_get_uint_val(val, &u64val); |
| *forward_port = (uint16_t)u64val; |
| res = COMPANION_PROXY_E_SUCCESS; |
| } else { |
| res = COMPANION_PROXY_E_UNKNOWN_ERROR; |
| } |
| plist_free(dict); |
| |
| return res; |
| } |
| |
| LIBIMOBILEDEVICE_API companion_proxy_error_t companion_proxy_stop_forwarding_service_port(companion_proxy_client_t client, uint16_t remote_port) |
| { |
| if (!client) { |
| return COMPANION_PROXY_E_INVALID_ARG; |
| } |
| |
| plist_t dict = plist_new_dict(); |
| plist_dict_set_item(dict, "Command", plist_new_string("StopForwardingServicePort")); |
| plist_dict_set_item(dict, "GizmoRemotePortNumber", plist_new_uint(remote_port)); |
| |
| companion_proxy_error_t res = companion_proxy_send(client, dict); |
| plist_free(dict); |
| dict = NULL; |
| if (res != COMPANION_PROXY_E_SUCCESS) { |
| return res; |
| } |
| |
| res = companion_proxy_receive(client, &dict); |
| if (res != COMPANION_PROXY_E_SUCCESS) { |
| return res; |
| } |
| plist_free(dict); |
| |
| return res; |
| } |