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-rw-r--r--tools/Makefile.am6
-rw-r--r--tools/idevicebtlogger.c360
2 files changed, 366 insertions, 0 deletions
diff --git a/tools/Makefile.am b/tools/Makefile.am
index 4740330..d701bab 100644
--- a/tools/Makefile.am
+++ b/tools/Makefile.am
@@ -11,6 +11,7 @@ AM_LDFLAGS = \
$(libplist_LIBS)
bin_PROGRAMS = \
+ idevicebtlogger\
idevice_id \
ideviceinfo \
idevicename \
@@ -30,6 +31,11 @@ bin_PROGRAMS = \
idevicecrashreport \
idevicesetlocation
+idevicebtlogger_SOURCES = idevicebtlogger.c
+iidevicebtlogger_CFLAGS = $(AM_CFLAGS)
+idevicebtlogger_LDFLAGS = $(top_builddir)/common/libinternalcommon.la $(AM_LDFLAGS) -lpcap
+idevicebtlogger_LDADD = $(top_builddir)/src/libimobiledevice-1.0.la
+
ideviceinfo_SOURCES = ideviceinfo.c
ideviceinfo_CFLAGS = $(AM_CFLAGS) $(limd_glue_CFLAGS)
ideviceinfo_LDFLAGS = $(AM_LDFLAGS) $(limd_glue_LIBS)
diff --git a/tools/idevicebtlogger.c b/tools/idevicebtlogger.c
new file mode 100644
index 0000000..fc42290
--- /dev/null
+++ b/tools/idevicebtlogger.c
@@ -0,0 +1,360 @@
+/*
+ * idevicebt_packet_logger.c
+ * Capture bt HCI packet log to pcap
+ *
+ * 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
+
+#define TOOL_NAME "idevicebtlogger"
+
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <signal.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <getopt.h>
+
+#ifdef WIN32
+#include <windows.h>
+#define sleep(x) Sleep(x*1000)
+#else
+#include <arpa/inet.h>
+#endif
+
+
+#include <libimobiledevice/libimobiledevice.h>
+#include <libimobiledevice/bt_packet_logger.h>
+#include <pcap.h>// todo windows???
+
+#define BT_MAX_PACKET_SIZE 65535
+
+static int quit_flag = 0;
+static int exit_on_disconnect = 0;
+
+static char* udid = NULL;
+static idevice_t device = NULL;
+static bt_packet_logger_client_t bt_packet_logger = NULL;
+static int use_network = 0;
+static char* out_filename = NULL;
+static pcap_dumper_t * dump;
+
+typedef struct {
+ uint32_t length;
+ uint32_t ts_secs;
+ uint32_t ts_usecs;
+} PacketHeaderType;
+
+typedef enum {
+ HCI_COMMAND = 0x00,
+ HCI_EVENT = 0x01,
+ SENT_ACL_DATA = 0x02,
+ RECV_ACL_DATA = 0x03
+} PacketLoggerPacketType;
+
+static void bt_packet_logger_callback(uint8_t * data, uint16_t len, void *user_data)
+{
+ PacketHeaderType * header = (PacketHeaderType *)data;
+ uint16_t offset = sizeof(PacketHeaderType);
+
+ struct pcap_pkthdr pcap_header;
+ pcap_header.caplen = ntohl(header->length);
+ pcap_header.len = len - sizeof(PacketHeaderType);
+ pcap_header.ts.tv_sec = ntohl(header->ts_secs);
+ pcap_header.ts.tv_usec = ntohl(header->ts_usecs);
+
+ // Sanity check incoming data and drop packet if its unreasonable.
+ if(pcap_header.len > BT_MAX_PACKET_SIZE || pcap_header.caplen > BT_MAX_PACKET_SIZE) {
+ fprintf(stderr, "WARNING: Packet length exceeded max size, corruption likely.\n ");
+ return;
+ }
+
+ uint8_t packet_type = data[offset];
+ uint8_t hci_h4_type = 0xff;
+
+ switch(packet_type) {
+ case HCI_EVENT:
+ hci_h4_type = 0x04;
+ break;
+
+ case HCI_COMMAND:
+ hci_h4_type = 0x01;
+ break;
+
+ case SENT_ACL_DATA:
+ hci_h4_type = 0x02;
+ break;
+
+ case RECV_ACL_DATA:
+ hci_h4_type = 0x02;
+ break;
+
+ default:
+ // unknown packet logger type, just pass it on
+ hci_h4_type = packet_type;
+ break;
+ }
+ if(hci_h4_type != 0xff) {
+ data[offset] = hci_h4_type;
+ pcap_dump((unsigned char*)dump, &pcap_header, &data[offset]);
+ pcap_dump_flush(dump);
+ }
+
+ // for(; offset < len; offset++) {
+ // if( (offset - sizeof(PacketHeaderType)) % 16 == 0) {
+ // printf("\n");
+ // }
+ // printf("0x%02x, ", 0xff&data[offset]);
+ // }
+ // printf("\n------------------------------------------------------------------------------------------------\n");
+}
+
+static void stop_logging(void)
+{
+ fflush(NULL);
+
+ if (bt_packet_logger) {
+ bt_packet_logger_client_free(bt_packet_logger);
+ bt_packet_logger = NULL;
+ }
+
+ if (device) {
+ idevice_free(device);
+ device = NULL;
+ }
+}
+
+static int start_logging(void)
+{
+ idevice_error_t ret = idevice_new_with_options(&device, udid, (use_network) ? IDEVICE_LOOKUP_NETWORK : IDEVICE_LOOKUP_USBMUX);
+ if (ret != IDEVICE_E_SUCCESS) {
+ fprintf(stderr, "Device with udid %s not found!?\n", udid);
+ return -1;
+ }
+
+ lockdownd_client_t lockdown = NULL;
+ lockdownd_error_t lerr = lockdownd_client_new_with_handshake(device, &lockdown, TOOL_NAME);
+ if (lerr != LOCKDOWN_E_SUCCESS) {
+ fprintf(stderr, "ERROR: Could not connect to lockdownd: %d\n", lerr);
+ idevice_free(device);
+ device = NULL;
+ return -1;
+ }
+
+ /* start bt_packet_logger service */
+ lockdownd_service_descriptor_t svc = NULL;
+ lerr = lockdownd_start_service(lockdown, BT_PACKETLOGGER_SERVICE_NAME, &svc);
+ if (lerr == LOCKDOWN_E_PASSWORD_PROTECTED) {
+ fprintf(stderr, "*** Device is passcode protected, enter passcode on the device to continue ***\n");
+ while (!quit_flag) {
+ lerr = lockdownd_start_service(lockdown, BT_PACKETLOGGER_SERVICE_NAME, &svc);
+ if (lerr != LOCKDOWN_E_PASSWORD_PROTECTED) {
+ break;
+ }
+ sleep(1);
+ }
+ }
+ if (lerr != LOCKDOWN_E_SUCCESS) {
+ fprintf(stderr, "ERROR: Could not connect to lockdownd: %d\n", lerr);
+ fprintf(stderr, "Please ensure the target device has a valid Bluetooth logging profile installed\n");
+ idevice_free(device);
+ device = NULL;
+ return -1;
+ }
+ lockdownd_client_free(lockdown);
+
+ /* connect to bt_packet_logger service */
+ bt_packet_logger_error_t serr = BT_PACKET_LOGGER_E_UNKNOWN_ERROR;
+ serr = bt_packet_logger_client_new(device, svc, &bt_packet_logger);
+ lockdownd_service_descriptor_free(svc);
+ if (serr != BT_PACKET_LOGGER_E_SUCCESS) {
+ fprintf(stderr, "ERROR: Could not start service %s.\n", BT_PACKETLOGGER_SERVICE_NAME);
+ fprintf(stderr, "Please ensure the target device has a valid Bluetooth logging profile installed\n");
+ idevice_free(device);
+ device = NULL;
+ return -1;
+ }
+
+ /* start capturing bt_packet_logger */
+ serr = bt_packet_logger_start_capture(bt_packet_logger, bt_packet_logger_callback, NULL);
+ if (serr != BT_PACKET_LOGGER_E_SUCCESS) {
+ fprintf(stderr, "ERROR: Unable to start capturing bt_packet_logger.\n");
+ bt_packet_logger_client_free(bt_packet_logger);
+ bt_packet_logger = NULL;
+ idevice_free(device);
+ device = NULL;
+ return -1;
+ }
+
+ fprintf(stdout, "[connected:%s]\n", udid);
+ fflush(stdout);
+
+ return 0;
+}
+
+static void device_event_cb(const idevice_event_t* event, void* userdata)
+{
+ if (use_network && event->conn_type != CONNECTION_NETWORK) {
+ return;
+ } else if (!use_network && event->conn_type != CONNECTION_USBMUXD) {
+ return;
+ }
+ if (event->event == IDEVICE_DEVICE_ADD) {
+ if (!bt_packet_logger) {
+ if (!udid) {
+ udid = strdup(event->udid);
+ }
+ if (strcmp(udid, event->udid) == 0) {
+ if (start_logging() != 0) {
+ fprintf(stderr, "Could not start logger for udid %s\n", udid);
+ }
+ }
+ }
+ } else if (event->event == IDEVICE_DEVICE_REMOVE) {
+ if (bt_packet_logger && (strcmp(udid, event->udid) == 0)) {
+ stop_logging();
+ fprintf(stdout, "[disconnected:%s]\n", udid);
+ if (exit_on_disconnect) {
+ quit_flag++;
+ }
+ }
+ }
+}
+
+/**
+ * signal handler function for cleaning up properly
+ */
+static void clean_exit(int sig)
+{
+ fprintf(stderr, "\nExiting...\n");
+ quit_flag++;
+}
+
+static void print_usage(int argc, char **argv, int is_error)
+{
+ char *name = NULL;
+ name = strrchr(argv[0], '/');
+ fprintf(is_error ? stderr : stdout, "Usage: %s [OPTIONS] <FILE>\n", (name ? name + 1: argv[0]));
+ fprintf(is_error ? stderr : stdout,
+ "\n" \
+ "Capture HCI packets from a connected device.\n" \
+ "\n" \
+ "OPTIONS:\n" \
+ " -u, --udid UDID target specific device by UDID\n" \
+ " -n, --network connect to network device\n" \
+ " -x, --exit exit when device disconnects\n" \
+ " -h, --help prints usage information\n" \
+ " -d, --debug enable communication debugging\n" \
+ " -v, --version prints version information\n" \
+ "\n" \
+ "Homepage: <" PACKAGE_URL ">\n"
+ "Bug Reports: <" PACKAGE_BUGREPORT ">\n"
+ );
+}
+
+int main(int argc, char *argv[])
+{
+ int c = 0;
+ const struct option longopts[] = {
+ { "debug", no_argument, NULL, 'd' },
+ { "help", no_argument, NULL, 'h' },
+ { "udid", required_argument, NULL, 'u' },
+ { "network", no_argument, NULL, 'n' },
+ { "exit", no_argument, NULL, 'x' },
+ { "version", no_argument, NULL, 'v' },
+ { NULL, 0, NULL, 0}
+ };
+
+ signal(SIGINT, clean_exit);
+ signal(SIGTERM, clean_exit);
+#ifndef WIN32
+ signal(SIGQUIT, clean_exit);
+ signal(SIGPIPE, SIG_IGN);
+#endif
+
+ while ((c = getopt_long(argc, argv, "dhu:nxv", longopts, NULL)) != -1) {
+ switch (c) {
+ case 'd':
+ idevice_set_debug_level(1);
+ break;
+ case 'u':
+ if (!*optarg) {
+ fprintf(stderr, "ERROR: UDID must not be empty!\n");
+ print_usage(argc, argv, 1);
+ return 2;
+ }
+ free(udid);
+ udid = strdup(optarg);
+ break;
+ case 'n':
+ use_network = 1;
+ break;
+ case 'x':
+ exit_on_disconnect = 1;
+ break;
+ case 'h':
+ print_usage(argc, argv, 0);
+ return 0;
+ case 'v':
+ printf("%s %s\n", TOOL_NAME, PACKAGE_VERSION);
+ return 0;
+ default:
+ print_usage(argc, argv, 1);
+ return 2;
+ }
+ }
+
+ if (optind < argc) {
+ out_filename = argv[optind];
+ printf("Output File: %s\n", out_filename);
+ }
+ else {
+ print_usage(argc, argv, 1);
+ return 2;
+ }
+
+ int num = 0;
+ idevice_info_t *devices = NULL;
+ idevice_get_device_list_extended(&devices, &num);
+ idevice_device_list_extended_free(devices);
+ if (num == 0) {
+ if (!udid) {
+ fprintf(stderr, "No device found. Plug in a device or pass UDID with -u to wait for device to be available.\n");
+ return -1;
+ } else {
+ fprintf(stderr, "Waiting for device with UDID %s to become available...\n", udid);
+ }
+ }
+
+ dump = pcap_dump_open(pcap_open_dead(187, BT_MAX_PACKET_SIZE), out_filename);
+ idevice_event_subscribe(device_event_cb, NULL);
+
+ while (!quit_flag) {
+ sleep(1);
+ }
+
+ idevice_event_unsubscribe();
+ stop_logging();
+
+ free(udid);
+
+ return 0;
+}