| /* |
| * mobilebackup.c |
| * Contains functions for the built-in MobileBackup client. |
| * |
| * Copyright (c) 2010-2019 Nikias Bassen, All Rights Reserved. |
| * Copyright (c) 2009 Martin Szulecki 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 <plist/plist.h> |
| #include <string.h> |
| #include <stdlib.h> |
| |
| #include "mobilebackup.h" |
| #include "device_link_service.h" |
| #include "common/debug.h" |
| |
| #define MBACKUP_VERSION_INT1 100 |
| #define MBACKUP_VERSION_INT2 0 |
| |
| #define IS_FLAG_SET(x, y) (((x) & (y)) == (y)) |
| |
| /** |
| * Convert an device_link_service_error_t value to an mobilebackup_error_t value. |
| * Used internally to get correct error codes when using device_link_service stuff. |
| * |
| * @param err An device_link_service_error_t error code |
| * |
| * @return A matching mobilebackup_error_t error code, |
| * MOBILEBACKUP_E_UNKNOWN_ERROR otherwise. |
| */ |
| static mobilebackup_error_t mobilebackup_error(device_link_service_error_t err) |
| { |
| switch (err) { |
| case DEVICE_LINK_SERVICE_E_SUCCESS: |
| return MOBILEBACKUP_E_SUCCESS; |
| case DEVICE_LINK_SERVICE_E_INVALID_ARG: |
| return MOBILEBACKUP_E_INVALID_ARG; |
| case DEVICE_LINK_SERVICE_E_PLIST_ERROR: |
| return MOBILEBACKUP_E_PLIST_ERROR; |
| case DEVICE_LINK_SERVICE_E_MUX_ERROR: |
| return MOBILEBACKUP_E_MUX_ERROR; |
| case DEVICE_LINK_SERVICE_E_SSL_ERROR: |
| return MOBILEBACKUP_E_SSL_ERROR; |
| case DEVICE_LINK_SERVICE_E_RECEIVE_TIMEOUT: |
| return MOBILEBACKUP_E_RECEIVE_TIMEOUT; |
| case DEVICE_LINK_SERVICE_E_BAD_VERSION: |
| return MOBILEBACKUP_E_BAD_VERSION; |
| default: |
| break; |
| } |
| return MOBILEBACKUP_E_UNKNOWN_ERROR; |
| } |
| |
| LIBIMOBILEDEVICE_API mobilebackup_error_t mobilebackup_client_new(idevice_t device, lockdownd_service_descriptor_t service, mobilebackup_client_t * client) |
| { |
| if (!device || !service || service->port == 0 || !client || *client) |
| return MOBILEBACKUP_E_INVALID_ARG; |
| |
| device_link_service_client_t dlclient = NULL; |
| mobilebackup_error_t ret = mobilebackup_error(device_link_service_client_new(device, service, &dlclient)); |
| if (ret != MOBILEBACKUP_E_SUCCESS) { |
| return ret; |
| } |
| |
| mobilebackup_client_t client_loc = (mobilebackup_client_t) malloc(sizeof(struct mobilebackup_client_private)); |
| client_loc->parent = dlclient; |
| |
| /* perform handshake */ |
| ret = mobilebackup_error(device_link_service_version_exchange(dlclient, MBACKUP_VERSION_INT1, MBACKUP_VERSION_INT2)); |
| if (ret != MOBILEBACKUP_E_SUCCESS) { |
| debug_info("version exchange failed, error %d", ret); |
| mobilebackup_client_free(client_loc); |
| return ret; |
| } |
| |
| *client = client_loc; |
| |
| return ret; |
| } |
| |
| LIBIMOBILEDEVICE_API mobilebackup_error_t mobilebackup_client_start_service(idevice_t device, mobilebackup_client_t * client, const char* label) |
| { |
| mobilebackup_error_t err = MOBILEBACKUP_E_UNKNOWN_ERROR; |
| service_client_factory_start_service(device, MOBILEBACKUP_SERVICE_NAME, (void**)client, label, SERVICE_CONSTRUCTOR(mobilebackup_client_new), &err); |
| return err; |
| } |
| |
| LIBIMOBILEDEVICE_API mobilebackup_error_t mobilebackup_client_free(mobilebackup_client_t client) |
| { |
| if (!client) |
| return MOBILEBACKUP_E_INVALID_ARG; |
| mobilebackup_error_t err = MOBILEBACKUP_E_SUCCESS; |
| if (client->parent) { |
| device_link_service_disconnect(client->parent, NULL); |
| err = mobilebackup_error(device_link_service_client_free(client->parent)); |
| } |
| free(client); |
| return err; |
| } |
| |
| LIBIMOBILEDEVICE_API mobilebackup_error_t mobilebackup_receive(mobilebackup_client_t client, plist_t * plist) |
| { |
| if (!client) |
| return MOBILEBACKUP_E_INVALID_ARG; |
| mobilebackup_error_t ret = mobilebackup_error(device_link_service_receive(client->parent, plist)); |
| return ret; |
| } |
| |
| LIBIMOBILEDEVICE_API mobilebackup_error_t mobilebackup_send(mobilebackup_client_t client, plist_t plist) |
| { |
| if (!client || !plist) |
| return MOBILEBACKUP_E_INVALID_ARG; |
| return mobilebackup_error(device_link_service_send(client->parent, plist)); |
| } |
| |
| /** |
| * Sends a backup message plist. |
| * |
| * @param client The connected MobileBackup client to use. |
| * @param message The message to send. This will be inserted into the request |
| * plist as value for BackupMessageTypeKey. If this parameter is NULL, |
| * the plist passed in the options parameter will be sent directly. |
| * @param options Additional options as PLIST_DICT to add to the request. |
| * The BackupMessageTypeKey with the value passed in the message parameter |
| * will be inserted into this plist before sending it. This parameter |
| * can be NULL if message is not NULL. |
| */ |
| static mobilebackup_error_t mobilebackup_send_message(mobilebackup_client_t client, const char *message, plist_t options) |
| { |
| if (!client || !client->parent || (!message && !options)) |
| return MOBILEBACKUP_E_INVALID_ARG; |
| |
| if (options && (plist_get_node_type(options) != PLIST_DICT)) { |
| return MOBILEBACKUP_E_INVALID_ARG; |
| } |
| |
| mobilebackup_error_t err; |
| |
| if (message) { |
| plist_t dict = NULL; |
| if (options) { |
| dict = plist_copy(options); |
| } else { |
| dict = plist_new_dict(); |
| } |
| plist_dict_set_item(dict, "BackupMessageTypeKey", plist_new_string(message)); |
| |
| /* send it as DLMessageProcessMessage */ |
| err = mobilebackup_error(device_link_service_send_process_message(client->parent, dict)); |
| plist_free(dict); |
| } else { |
| err = mobilebackup_error(device_link_service_send_process_message(client->parent, options)); |
| } |
| if (err != MOBILEBACKUP_E_SUCCESS) { |
| debug_info("ERROR: Could not send message '%s' (%d)!", message, err); |
| } |
| return err; |
| } |
| |
| /** |
| * Receives a plist from the device and checks if the value for the |
| * BackupMessageTypeKey matches the value passed in the message parameter. |
| * |
| * @param client The connected MobileBackup client to use. |
| * @param message The expected message to check. |
| * @param result Pointer to a plist_t that will be set to the received plist |
| * for further processing. The caller has to free it using plist_free(). |
| * Note that it will be set to NULL if the operation itself fails due to |
| * a communication or plist error. |
| * If this parameter is NULL, it will be ignored. |
| * |
| * @return MOBILEBACKUP_E_SUCCESS on success, MOBILEBACKUP_E_INVALID_ARG if |
| * client or message is invalid, MOBILEBACKUP_E_REPLY_NOT_OK if the |
| * expected message could not be received, MOBILEBACKUP_E_PLIST_ERROR if |
| * the received message is not a valid backup message plist (i.e. the |
| * BackupMessageTypeKey is not present), or MOBILEBACKUP_E_MUX_ERROR |
| * if a communication error occurs. |
| */ |
| static mobilebackup_error_t mobilebackup_receive_message(mobilebackup_client_t client, const char *message, plist_t *result) |
| { |
| if (!client || !client->parent || !message) |
| return MOBILEBACKUP_E_INVALID_ARG; |
| |
| if (result) |
| *result = NULL; |
| mobilebackup_error_t err; |
| |
| plist_t dict = NULL; |
| |
| /* receive DLMessageProcessMessage */ |
| err = mobilebackup_error(device_link_service_receive_process_message(client->parent, &dict)); |
| if (err != MOBILEBACKUP_E_SUCCESS) { |
| goto leave; |
| } |
| |
| plist_t node = plist_dict_get_item(dict, "BackupMessageTypeKey"); |
| if (!node) { |
| debug_info("ERROR: BackupMessageTypeKey not found in plist!"); |
| err = MOBILEBACKUP_E_PLIST_ERROR; |
| goto leave; |
| } |
| |
| char *str = NULL; |
| plist_get_string_val(node, &str); |
| if (str && (strcmp(str, message) == 0)) { |
| err = MOBILEBACKUP_E_SUCCESS; |
| } else { |
| debug_info("ERROR: BackupMessageTypeKey value does not match '%s'!", message); |
| err = MOBILEBACKUP_E_REPLY_NOT_OK; |
| } |
| if (str) |
| free(str); |
| |
| if (result) { |
| *result = dict; |
| dict = NULL; |
| } |
| leave: |
| if (dict) { |
| plist_free(dict); |
| } |
| |
| return err; |
| } |
| |
| LIBIMOBILEDEVICE_API mobilebackup_error_t mobilebackup_request_backup(mobilebackup_client_t client, plist_t backup_manifest, const char *base_path, const char *proto_version) |
| { |
| if (!client || !client->parent || !base_path || !proto_version) |
| return MOBILEBACKUP_E_INVALID_ARG; |
| |
| if (backup_manifest && (plist_get_node_type(backup_manifest) != PLIST_DICT)) |
| return MOBILEBACKUP_E_PLIST_ERROR; |
| |
| mobilebackup_error_t err; |
| |
| /* construct request plist */ |
| plist_t dict = plist_new_dict(); |
| if (backup_manifest) |
| plist_dict_set_item(dict, "BackupManifestKey", plist_copy(backup_manifest)); |
| plist_dict_set_item(dict, "BackupComputerBasePathKey", plist_new_string(base_path)); |
| plist_dict_set_item(dict, "BackupMessageTypeKey", plist_new_string("BackupMessageBackupRequest")); |
| plist_dict_set_item(dict, "BackupProtocolVersion", plist_new_string(proto_version)); |
| |
| /* send request */ |
| err = mobilebackup_send_message(client, NULL, dict); |
| plist_free(dict); |
| dict = NULL; |
| if (err != MOBILEBACKUP_E_SUCCESS) { |
| debug_info("ERROR: Could not send backup request message (%d)!", err); |
| goto leave; |
| } |
| |
| /* now receive and hopefully get a BackupMessageBackupReplyOK */ |
| err = mobilebackup_receive_message(client, "BackupMessageBackupReplyOK", &dict); |
| if (err != MOBILEBACKUP_E_SUCCESS) { |
| debug_info("ERROR: Could not receive BackupReplyOK message (%d)!", err); |
| goto leave; |
| } |
| |
| plist_t node = plist_dict_get_item(dict, "BackupProtocolVersion"); |
| if (node) { |
| char *str = NULL; |
| plist_get_string_val(node, &str); |
| if (str) { |
| int maj = 0; |
| int min = 0; |
| sscanf(str, "%u.%u", &maj, &min); |
| uint32_t this_ver = ((maj & 0xFF) << 8) | (min & 0xFF); |
| maj = 0; |
| min = 0; |
| sscanf(proto_version, "%u.%u", &maj, &min); |
| uint32_t proto_ver = ((maj & 0xFF) << 8) | (min & 0xFF); |
| if (this_ver > proto_ver) { |
| err = MOBILEBACKUP_E_BAD_VERSION; |
| } |
| free(str); |
| } |
| } |
| if (err != MOBILEBACKUP_E_SUCCESS) |
| goto leave; |
| |
| /* BackupMessageBackupReplyOK received, send it back */ |
| err = mobilebackup_send_message(client, NULL, dict); |
| if (err != MOBILEBACKUP_E_SUCCESS) { |
| debug_info("ERROR: Could not send BackupReplyOK ACK (%d)", err); |
| } |
| |
| leave: |
| if (dict) |
| plist_free(dict); |
| return err; |
| } |
| |
| LIBIMOBILEDEVICE_API mobilebackup_error_t mobilebackup_send_backup_file_received(mobilebackup_client_t client) |
| { |
| return mobilebackup_send_message(client, "kBackupMessageBackupFileReceived", NULL); |
| } |
| |
| LIBIMOBILEDEVICE_API mobilebackup_error_t mobilebackup_request_restore(mobilebackup_client_t client, plist_t backup_manifest, mobilebackup_flags_t flags, const char *proto_version) |
| { |
| if (!client || !client->parent || !backup_manifest || !proto_version) |
| return MOBILEBACKUP_E_INVALID_ARG; |
| |
| if (backup_manifest && (plist_get_node_type(backup_manifest) != PLIST_DICT)) |
| return MOBILEBACKUP_E_PLIST_ERROR; |
| |
| mobilebackup_error_t err; |
| |
| /* construct request plist */ |
| plist_t dict = plist_new_dict(); |
| plist_dict_set_item(dict, "BackupManifestKey", plist_copy(backup_manifest)); |
| plist_dict_set_item(dict, "BackupMessageTypeKey", plist_new_string("kBackupMessageRestoreRequest")); |
| plist_dict_set_item(dict, "BackupProtocolVersion", plist_new_string(proto_version)); |
| /* add flags */ |
| plist_dict_set_item(dict, "BackupNotifySpringBoard", plist_new_bool(IS_FLAG_SET(flags, MB_RESTORE_NOTIFY_SPRINGBOARD))); |
| plist_dict_set_item(dict, "BackupPreserveSettings", plist_new_bool(IS_FLAG_SET(flags, MB_RESTORE_PRESERVE_SETTINGS))); |
| plist_dict_set_item(dict, "BackupPreserveCameraRoll", plist_new_bool(IS_FLAG_SET(flags, MB_RESTORE_PRESERVE_CAMERA_ROLL))); |
| |
| /* send request */ |
| err = mobilebackup_send_message(client, NULL, dict); |
| plist_free(dict); |
| dict = NULL; |
| if (err != MOBILEBACKUP_E_SUCCESS) { |
| debug_info("ERROR: Could not send restore request message (%d)!", err); |
| goto leave; |
| } |
| |
| /* now receive and hopefully get a BackupMessageRestoreReplyOK */ |
| err = mobilebackup_receive_message(client, "BackupMessageRestoreReplyOK", &dict); |
| if (err != MOBILEBACKUP_E_SUCCESS) { |
| debug_info("ERROR: Could not receive RestoreReplyOK message (%d)!", err); |
| goto leave; |
| } |
| |
| plist_t node = plist_dict_get_item(dict, "BackupProtocolVersion"); |
| if (node) { |
| char *str = NULL; |
| plist_get_string_val(node, &str); |
| if (str) { |
| int maj = 0; |
| int min = 0; |
| sscanf(str, "%u.%u", &maj, &min); |
| uint32_t this_ver = ((maj & 0xFF) << 8) | (min & 0xFF); |
| maj = 0; |
| min = 0; |
| sscanf(proto_version, "%u.%u", &maj, &min); |
| uint32_t proto_ver = ((maj & 0xFF) << 8) | (min & 0xFF); |
| if (this_ver > proto_ver) { |
| err = MOBILEBACKUP_E_BAD_VERSION; |
| } |
| free(str); |
| } |
| } |
| |
| leave: |
| if (dict) |
| plist_free(dict); |
| return err; |
| } |
| |
| LIBIMOBILEDEVICE_API mobilebackup_error_t mobilebackup_receive_restore_file_received(mobilebackup_client_t client, plist_t *result) |
| { |
| return mobilebackup_receive_message(client, "BackupMessageRestoreFileReceived", result); |
| } |
| |
| LIBIMOBILEDEVICE_API mobilebackup_error_t mobilebackup_receive_restore_application_received(mobilebackup_client_t client, plist_t *result) |
| { |
| return mobilebackup_receive_message(client, "BackupMessageRestoreApplicationReceived", result); |
| } |
| |
| LIBIMOBILEDEVICE_API mobilebackup_error_t mobilebackup_send_restore_complete(mobilebackup_client_t client) |
| { |
| mobilebackup_error_t err = mobilebackup_send_message(client, "BackupMessageRestoreComplete", NULL); |
| if (err != MOBILEBACKUP_E_SUCCESS) { |
| return err; |
| } |
| plist_t dlmsg = NULL; |
| err = mobilebackup_receive(client, &dlmsg); |
| if ((err != MOBILEBACKUP_E_SUCCESS) || !dlmsg || (plist_get_node_type(dlmsg) != PLIST_ARRAY) || (plist_array_get_size(dlmsg) != 2)) { |
| if (dlmsg) { |
| debug_info("ERROR: Did not receive DLMessageDisconnect:"); |
| debug_plist(dlmsg); |
| plist_free(dlmsg); |
| } |
| if (err == MOBILEBACKUP_E_SUCCESS) { |
| err = MOBILEBACKUP_E_PLIST_ERROR; |
| } |
| return err; |
| } |
| plist_t node = plist_array_get_item (dlmsg, 0); |
| char *msg = NULL; |
| if (node && (plist_get_node_type(node) == PLIST_STRING)) { |
| plist_get_string_val(node, &msg); |
| } |
| |
| if (msg && !strcmp(msg, "DLMessageDisconnect")) { |
| err = MOBILEBACKUP_E_SUCCESS; |
| /* we need to do this here, otherwise mobilebackup_client_free |
| will fail */ |
| device_link_service_client_free(client->parent); |
| client->parent = NULL; |
| } else { |
| debug_info("ERROR: Malformed plist received:"); |
| debug_plist(dlmsg); |
| err = MOBILEBACKUP_E_PLIST_ERROR; |
| } |
| |
| plist_free(dlmsg); |
| |
| if (msg) |
| free(msg); |
| |
| return err; |
| } |
| |
| LIBIMOBILEDEVICE_API mobilebackup_error_t mobilebackup_send_error(mobilebackup_client_t client, const char *reason) |
| { |
| if (!client || !client->parent || !reason) |
| return MOBILEBACKUP_E_INVALID_ARG; |
| |
| mobilebackup_error_t err; |
| |
| /* construct error plist */ |
| plist_t dict = plist_new_dict(); |
| plist_dict_set_item(dict, "BackupErrorReasonKey", plist_new_string(reason)); |
| |
| err = mobilebackup_send_message(client, "BackupMessageError", dict); |
| plist_free(dict); |
| |
| return err; |
| } |