diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/Makefile.am | 3 | ||||
| -rw-r--r-- | src/bt_packet_logger.c | 235 | ||||
| -rw-r--r-- | src/bt_packet_logger.h | 36 |
3 files changed, 273 insertions, 1 deletions
diff --git a/src/Makefile.am b/src/Makefile.am index 13221b9..1c80ed6 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -57,7 +57,8 @@ libimobiledevice_1_0_la_SOURCES = \ preboard.c preboard.h \ companion_proxy.c companion_proxy.h \ reverse_proxy.c reverse_proxy.h \ - syslog_relay.c syslog_relay.h + syslog_relay.c syslog_relay.h \ + bt_packet_logger.c bt_packet_logger.h if WIN32 libimobiledevice_1_0_la_LDFLAGS += -avoid-version -static-libgcc diff --git a/src/bt_packet_logger.c b/src/bt_packet_logger.c new file mode 100644 index 0000000..5391825 --- /dev/null +++ b/src/bt_packet_logger.c @@ -0,0 +1,235 @@ +/* + * bt_packet_logger.c + * com.apple.bt_packet_logger service implementation. + * + * Copyright (c) 2021 Geoffrey Kruse, 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 "bt_packet_logger.h" +#include "lockdown.h" +#include "common/debug.h" + +struct bt_packet_logger_worker_thread { + bt_packet_logger_client_t client; + bt_packet_logger_receive_cb_t cbfunc; + void *user_data; +}; + +/** + * Convert a service_error_t value to a bt_packet_logger_error_t value. + * Used internally to get correct error codes. + * + * @param err An service_error_t error code + * + * @return A matching bt_packet_logger_error_t error code, + * BT_PACKET_LOGGER_E_UNKNOWN_ERROR otherwise. + */ +static bt_packet_logger_error_t bt_packet_logger_error(service_error_t err) +{ + switch (err) { + case SERVICE_E_SUCCESS: + return BT_PACKET_LOGGER_E_SUCCESS; + case SERVICE_E_INVALID_ARG: + return BT_PACKET_LOGGER_E_INVALID_ARG; + case SERVICE_E_MUX_ERROR: + return BT_PACKET_LOGGER_E_MUX_ERROR; + case SERVICE_E_SSL_ERROR: + return BT_PACKET_LOGGER_E_SSL_ERROR; + case SERVICE_E_NOT_ENOUGH_DATA: + return BT_PACKET_LOGGER_E_NOT_ENOUGH_DATA; + case SERVICE_E_TIMEOUT: + return BT_PACKET_LOGGER_E_TIMEOUT; + default: + break; + } + return BT_PACKET_LOGGER_E_UNKNOWN_ERROR; +} + +LIBIMOBILEDEVICE_API bt_packet_logger_error_t bt_packet_logger_client_new(idevice_t device, lockdownd_service_descriptor_t service, bt_packet_logger_client_t * client) +{ + *client = NULL; + + if (!device || !service || service->port == 0 || !client || *client) { + debug_info("Incorrect parameter passed to bt_packet_logger_client_new."); + return BT_PACKET_LOGGER_E_INVALID_ARG; + } + + debug_info("Creating bt_packet_logger_client, port = %d.", service->port); + + service_client_t parent = NULL; + bt_packet_logger_error_t ret = bt_packet_logger_error(service_client_new(device, service, &parent)); + if (ret != BT_PACKET_LOGGER_E_SUCCESS) { + debug_info("Creating base service client failed. Error: %i", ret); + return ret; + } + + bt_packet_logger_client_t client_loc = (bt_packet_logger_client_t) malloc(sizeof(struct bt_packet_logger_client_private)); + client_loc->parent = parent; + client_loc->worker = THREAD_T_NULL; + + *client = client_loc; + + debug_info("bt_packet_logger_client successfully created."); + return 0; +} + +LIBIMOBILEDEVICE_API bt_packet_logger_error_t bt_packet_logger_client_start_service(idevice_t device, bt_packet_logger_client_t * client, const char* label) +{ + bt_packet_logger_error_t err = BT_PACKET_LOGGER_E_UNKNOWN_ERROR; + service_client_factory_start_service(device, BT_PACKETLOGGER_SERVICE_NAME, (void**)client, label, SERVICE_CONSTRUCTOR(bt_packet_logger_client_new), &err); + return err; +} + +LIBIMOBILEDEVICE_API bt_packet_logger_error_t bt_packet_logger_client_free(bt_packet_logger_client_t client) +{ + if (!client) + return BT_PACKET_LOGGER_E_INVALID_ARG; + bt_packet_logger_stop_capture(client); + bt_packet_logger_error_t err = bt_packet_logger_error(service_client_free(client->parent)); + free(client); + + return err; +} + +LIBIMOBILEDEVICE_API bt_packet_logger_error_t bt_packet_logger_receive(bt_packet_logger_client_t client, char* data, uint32_t size, uint32_t *received) +{ + return bt_packet_logger_receive_with_timeout(client, data, size, received, 1000); +} + +LIBIMOBILEDEVICE_API bt_packet_logger_error_t bt_packet_logger_receive_with_timeout(bt_packet_logger_client_t client, char* data, uint32_t size, uint32_t *received, unsigned int timeout) +{ + bt_packet_logger_error_t res = BT_PACKET_LOGGER_E_UNKNOWN_ERROR; + int bytes = 0; + + if (!client || !data || (size == 0)) { + return BT_PACKET_LOGGER_E_INVALID_ARG; + } + + res = bt_packet_logger_error(service_receive_with_timeout(client->parent, data, size, (uint32_t*)&bytes, timeout)); + if (res != BT_PACKET_LOGGER_E_SUCCESS && res != BT_PACKET_LOGGER_E_TIMEOUT && res != BT_PACKET_LOGGER_E_NOT_ENOUGH_DATA) { + debug_info("Could not read data, error %d", res); + } + if (received) { + *received = (uint32_t)bytes; + } + + return res; +} + +void *bt_packet_logger_worker(void *arg) +{ + bt_packet_logger_error_t ret = BT_PACKET_LOGGER_E_UNKNOWN_ERROR; + struct bt_packet_logger_worker_thread *btwt = (struct bt_packet_logger_worker_thread*)arg; + + if (!btwt) + return NULL; + + debug_info("Running"); + + while (btwt->client->parent) { + uint32_t bytes = 0; + uint16_t len; + + ret = bt_packet_logger_receive_with_timeout(btwt->client, &len, 2, &bytes, 100); + + if (ret == BT_PACKET_LOGGER_E_TIMEOUT || ret == BT_PACKET_LOGGER_E_NOT_ENOUGH_DATA || ((bytes == 0) && (ret == BT_PACKET_LOGGER_E_SUCCESS))) { + continue; + } else if (ret < 0) { + debug_info("Connection to bt packet logger interrupted"); + break; + } + + // todo remove magic and move "c" off stack + if(bytes > 0 && len > 12) { + char c[65535]; + debug_info("Reading %u bytes\n", len); + ret = bt_packet_logger_receive_with_timeout(btwt->client, c, len, &bytes, 500); + + if(len != bytes) { + debug_info("Failed Read Expected %u, Received %u\n", len, bytes); + continue; + } + + if (ret == BT_PACKET_LOGGER_E_TIMEOUT || ret == BT_PACKET_LOGGER_E_NOT_ENOUGH_DATA || ((bytes == 0) && (ret == BT_PACKET_LOGGER_E_SUCCESS))) { + continue; + } else if (ret < 0) { + debug_info("Connection to bt packet logger interrupted"); + break; + } + + btwt->cbfunc(c, len, btwt->user_data); + } + } + + if (btwt) { + free(btwt); + } + + debug_info("Exiting"); + + return NULL; +} + +LIBIMOBILEDEVICE_API bt_packet_logger_error_t bt_packet_logger_start_capture(bt_packet_logger_client_t client, bt_packet_logger_receive_cb_t callback, void* user_data) +{ + if (!client || !callback) + return BT_PACKET_LOGGER_E_INVALID_ARG; + + bt_packet_logger_error_t res = BT_PACKET_LOGGER_E_UNKNOWN_ERROR; + + if (client->worker) { + debug_info("Another syslog capture thread appears to be running already."); + return res; + } + + /* start worker thread */ + struct bt_packet_logger_worker_thread *btwt = (struct bt_packet_logger_worker_thread*)malloc(sizeof(struct bt_packet_logger_worker_thread)); + if (btwt) { + btwt->client = client; + btwt->cbfunc = callback; + btwt->user_data = user_data; + + if (thread_new(&client->worker, bt_packet_logger_worker, btwt) == 0) { + res = BT_PACKET_LOGGER_E_SUCCESS; + } + } + + return res; +} + + +LIBIMOBILEDEVICE_API bt_packet_logger_error_t bt_packet_logger_stop_capture(bt_packet_logger_client_t client) +{ + if (client->worker) { + /* notify thread to finish */ + service_client_t parent = client->parent; + client->parent = NULL; + /* join thread to make it exit */ + thread_join(client->worker); + thread_free(client->worker); + client->worker = THREAD_T_NULL; + client->parent = parent; + } + + return BT_PACKET_LOGGER_E_SUCCESS; +} diff --git a/src/bt_packet_logger.h b/src/bt_packet_logger.h new file mode 100644 index 0000000..1ad906d --- /dev/null +++ b/src/bt_packet_logger.h @@ -0,0 +1,36 @@ +/* + * bt_packet_logger.h + * com.apple.bt_packet_logger service header file. + * + * Copyright (c) 2021 Geoffrey Kruse, 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 _SYSLOG_RELAY_H +#define _SYSLOG_RELAY_H + +#include "libimobiledevice/bt_packet_logger.h" +#include "service.h" +#include "common/thread.h" + +struct bt_packet_logger_client_private { + service_client_t parent; + THREAD_T worker; +}; + +void *bt_packet_logger_worker(void *arg); + +#endif |