Full Code of Denton-L/based-connect for AI

Repository: Denton-L/based-connect
Branch: master
Commit: ef66145bf473
Files: 12
Total size: 67.8 KB

Directory structure:
gitextract_i955fk9k/

├── .gitignore
├── LICENSE.txt
├── Makefile
├── README.txt
├── based.c
├── based.h
├── bluetooth.c
├── bluetooth.h
├── details.txt
├── main.c
├── util.c
└── util.h

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FILE CONTENTS
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FILE: .gitignore
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based-connect
*.o
*.d


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FILE: LICENSE.txt
================================================
                    GNU GENERAL PUBLIC LICENSE
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  If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:

    {project}  Copyright (C) {year}  {fullname}
    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
    This is free software, and you are welcome to redistribute it
    under certain conditions; type `show c' for details.

The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License.  Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".

  You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.

  The GNU General Public License does not permit incorporating your program
into proprietary programs.  If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library.  If this is what you want to do, use the GNU Lesser General
Public License instead of this License.  But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.


================================================
FILE: Makefile
================================================
PREFIX = /usr/local
TARGET = $(DESTDIR)$(PREFIX)

CC = gcc
CCFLAGS = -Wall -MMD -O
LDFLAGS = -lbluetooth
SOURCES = $(wildcard *.c)
OBJECTS = $(SOURCES:.c=.o)
DEPENDS = $(OBJECTS:.o=.d)
EXEC = based-connect


$(EXEC): $(OBJECTS)
	$(CC) -o $@ $^ $(LDFLAGS)

%.o: %.c
	$(CC) -c -o $@ $< $(CCFLAGS)

-include $(DEPENDS)

.PHONY: install clean

install: $(EXEC)
	install -Dm 755 $(EXEC) $(TARGET)/bin/$(EXEC)

clean:
	rm -f *.o *.d $(EXEC)


================================================
FILE: README.txt
================================================
based-connect
=============

If you own a Bose device, you'll know that Bose Connect is not available on
Linux. This program attempts to reverse engineer that app in order to give the
device Linux support.

Usage
-----

./based-connect [options] <address>
	address: The Bluetooth address of the device.

Options:
	-h, --help
		Print the help message.

	-n <name>, --name=<name>
		Change the name of the device.

	-c <level>, --noise-cancelling=<level>
		Change the noise cancelling level.
		level: high, low, off

	-o <minutes>, --auto-off=<minutes>
		Change the auto-off time.
		minutes: never, 5, 20, 40, 60, 180

	-l <language>, --prompt-language=<language>
		Change the voice-prompt language.
		language: en, fr, it, de, es, pt, zh, ko, nl, ja, sv

	-v <switch>, --voice-prompts=<switch>
		Change whether voice-prompts are on or off.
		switch: on, off

	-d, --device-status
		Print the device status information. This includes its name, language,
		voice-prompts, auto-off and noise cancelling settings.

	-p <status>, --pairing=<status>
		Change whether the device is pairing.
		status: on, off

	-f, --firmware-version
		Print the firmware version on the device.

	-s, --serial-number
		Print the serial number of the device.

	-b, --battery-level
		Print the battery level of the device as a percent.

	-a, --paired-devices
		Print the devices currently connected to the device.
		!: indicates the current device
		*: indicates other connected devices

	--connect-device=<address>
		Attempt to connect to the device at address.

	--disconnect-device=<address>
		Disconnect the device at address.

	--remove-device=<address>
		Remove the device at address from the pairing list.

	--device-id
		Print the device id followed by the index revision.

Building
--------

Simply run `make -j` to build the program. The executable produced will be
called `based-connect`.

Installing
----------

Run `make install` to install the program. The `PREFIX` and `DESTDIR` variables
are assignable and have the traditional meaning.

Alternatively, if you run Arch Linux, you can download it from the AUR here:

https://aur.archlinux.org/packages/based-connect-git/

Dependencies
------------

* BlueZ
	* bluez-libs on Arch Linux
	* libbluetooth-dev on Debian and Ubuntu

Disclaimer
----------

This has only been tested on Bose QuietComfort 35's with firmware 1.3.2, 1.2.9,
1.06 and SoundLink II's with firmware 2.1.1. I cannot ensure that this program
works on any other devices.

Todo
----

* Implement "getters" for current headphone state
	* Current status of all setters currently implemented
	* Date of manufacturing
* Get/set volume
* Port to MacOS (and maybe Windows)
* Firmware updates?

Firmware Details
----------------

See details.txt for partly reverse engineered but unimplemented (and unknown)
details.


================================================
FILE: based.c
================================================
#include <stddef.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "based.h"
#include "bluetooth.h"

#define ANY 0x00
#define CN_BASE_PACK_LEN 4

int has_noise_cancelling(unsigned int device_id) {
	switch (device_id) {
		case 0x4014:
		case 0x4020:
		case 0x400c:
			return 1;
		default:
			return 0;
	}
}

static int masked_memcmp(const void *ptr1, const void *ptr2, size_t num, const void *mask) {
	while (num-- > 0) {
		uint8_t mask_byte = *(uint8_t *) mask++;
		uint8_t byte1 = *(uint8_t *) ptr1++ & mask_byte;
		uint8_t byte2 = *(uint8_t *) ptr2++ & mask_byte;

		if (byte1 != byte2) {
			return byte1 - byte2;
		}
	}
	return 0;
}

static int read_check(int sock, void *recieve, size_t recieve_n, const void *ack,
		const void *mask) {
	int status = read(sock, recieve, recieve_n);
	if (status != recieve_n) {
		return status ? status : 1;
	}

	return abs(mask
			? masked_memcmp(ack, recieve, recieve_n, mask)
			: memcmp(ack, recieve, recieve_n));
}

static int write_check(int sock, const void *send, size_t send_n,
		const void *ack, size_t ack_n) {
	uint8_t buffer[ack_n];

	int status = write(sock, send, send_n);
	if (status != send_n) {
		return status ? status : 1;
	}
	return read_check(sock, buffer, sizeof(buffer), ack, NULL);
}

int send_packet(int sock, const void *send, size_t send_n, uint8_t recieved[MAX_BT_PACK_LEN]) {
	int status = write(sock, send, send_n);
	if (status != send_n) {
		return status ? status : 1;
	}

	return read(sock, recieved, MAX_BT_PACK_LEN);
}

int init_connection(int sock) {
	static const uint8_t send[] = { 0x00, 0x01, 0x01, 0x00 };
	static const uint8_t ack[] = { 0x00, 0x01, 0x03, 0x05 };

	int status = write_check(sock, send, sizeof(send), ack, sizeof(ack));
	if (status) {
		return status;
	}

	// Throw away the initial firmware version
	uint8_t garbage[5];
	status = read(sock, garbage, sizeof(garbage));

	if (status != sizeof(garbage)) {
		return status ? status : 1;
	}

	return 0;
}

int get_device_id(int sock, unsigned int *device_id, unsigned int *index) {
	static const uint8_t send[] = { 0x00, 0x03, 0x01, 0x00 };
	static const uint8_t ack[] = { 0x00, 0x03, 0x03, 0x03 };

	int status = write_check(sock, send, sizeof(send), ack, sizeof(ack));
	if (status) {
		return status;
	}

	uint16_t device_id_halfword;
	status = read(sock, &device_id_halfword, sizeof(device_id_halfword));
	if (status != sizeof(device_id_halfword)) {
		return status ? status : 1;
	}

	*device_id = bswap_16(device_id_halfword);

	uint8_t index_byte;
	status = read(sock, &index_byte, 1);
	if (status != 1) {
		return status ? status : 1;
	}
	*index = index_byte;

	return 0;
}

static int get_name(int sock, char name[MAX_NAME_LEN + 1]) {
	static const uint8_t ack[] = { 0x01, 0x02, 0x03, ANY, 0x00 };
	static const uint8_t mask[] = { 0xff, 0xff, 0xff, 0x00, 0xff };
	uint8_t buffer[sizeof(ack)];

	int status = read_check(sock, buffer, sizeof(buffer), ack, mask);
	if (status) {
		return status;
	}

	size_t length = buffer[3] - 1;
	status = read(sock, name, length);
	if (status != length) {
		return status ? status : 1;
	}
	name[length] = '\0';

	return 0;
}

int set_name(int sock, const char *name) {
	static uint8_t send[CN_BASE_PACK_LEN + MAX_NAME_LEN] = { 0x01, 0x02, 0x02, ANY };
	size_t length = strlen(name);

	send[3] = length;
	strncpy((char *) &send[CN_BASE_PACK_LEN], name, MAX_NAME_LEN);

	size_t send_size = CN_BASE_PACK_LEN + length;
	int status = write(sock, send, send_size);
	if (status != send_size) {
		return status ? status : 1;
	}

	char got_name[MAX_NAME_LEN + 1];
	status = get_name(sock, got_name);
	if (status) {
		return status;
	}

	return abs(strcmp(name, got_name));
}

static int get_prompt_language(int sock, enum PromptLanguage *language) {
	// TODO: ensure that this value is correct
	// TODO: figure out what bytes 6 and 7 are for
	static const uint8_t ack[] = { 0x01, 0x03, 0x03, 0x05, ANY, 0x00, ANY, ANY, 0xde };
	static const uint8_t mask[] = { 0xff, 0xff, 0xff, 0xff, 0x00, 0xff, 0x00, 0x00, 0xff };
	uint8_t buffer[sizeof(ack)];

	int status = read_check(sock, buffer, sizeof(buffer), ack, mask);
	if (status) {
		return status;
	}

	*language = buffer[4];
	return 0;
}

int set_prompt_language(int sock, enum PromptLanguage language) {
	static uint8_t send[] = { 0x01, 0x03, 0x02, 0x01, ANY };
	send[4] = language;

	int status = write(sock, send, sizeof(send));
	if (status != sizeof(send)) {
		return status ? status : 1;
	}

	enum PromptLanguage got_language;
	status = get_prompt_language(sock, &got_language);
	if (status) {
		return status;
	}

	return abs(language - got_language);
}

int set_voice_prompts(int sock, int on) {
	char name[MAX_NAME_LEN + 1];
	enum PromptLanguage pl;
	enum AutoOff ao;
	enum NoiseCancelling nc;

	int status = get_device_status(sock, name, &pl, &ao, &nc);
	if (status) {
		return status;
	}

	if (on) {
		pl |= VP_MASK;
	} else {
		pl &= ~VP_MASK;
	}

	return set_prompt_language(sock, pl);
}

static int get_auto_off(int sock, enum AutoOff *minutes) {
	static const uint8_t ack[] = { 0x01, 0x04, 0x03, 0x01, ANY };
	static const uint8_t mask[] = { 0xff, 0xff, 0xff, 0xff, 0x00 };
	uint8_t buffer[sizeof(ack)];

	int status = read_check(sock, buffer, sizeof(buffer), ack, mask);
	if (status) {
		return status;
	}

	*minutes = buffer[4];
	return 0;
}

int set_auto_off(int sock, enum AutoOff minutes) {
	static uint8_t send[] = { 0x01, 0x04, 0x02, 0x01, ANY };
	send[4] = minutes;

	int status = write(sock, send, sizeof(send));
	if (status != sizeof(send)) {
		return status ? status : 1;
	}

	enum AutoOff got_minutes;
	status = get_auto_off(sock, &got_minutes);
	if (status) {
		return status;
	}

	return abs(minutes - got_minutes);
}

static int get_noise_cancelling(int sock, enum NoiseCancelling *level) {
	static const uint8_t ack[] = { 0x01, 0x06, 0x03, 0x02, ANY, 0x0b };
	static const uint8_t mask[] = { 0xff, 0xff, 0xff, 0xff, 0x00, 0xff };
	uint8_t buffer[sizeof(ack)];

	int status = read_check(sock, buffer, sizeof(buffer), ack, mask);
	if (status) {
		return status;
	}

	*level = buffer[4];
	return 0;
}

int set_noise_cancelling(int sock, enum NoiseCancelling level) {
	static uint8_t send[] = { 0x01, 0x06, 0x02, 0x01, ANY };
	send[4] = level;

	int status = write(sock, send, sizeof(send));
	if (status != sizeof(send)) {
		return status ? status : 1;
	}

	enum NoiseCancelling got_level;
	status = get_noise_cancelling(sock, &got_level);
	if (status) {
		return status;
	}

	return abs(level - got_level);
}

int get_device_status(int sock, char name[MAX_NAME_LEN + 1], enum PromptLanguage *language,
		enum AutoOff *minutes, enum NoiseCancelling *level) {
	unsigned int device_id;
	unsigned int index;
	int status = get_device_id(sock, &device_id, &index);
	if (status) {
		return status;
	}

	static const uint8_t send[] = { 0x01, 0x01, 0x05, 0x00 };
	status = write(sock, send, sizeof(send));
	if (status != sizeof(send)) {
		return status ? status : 1;
	}

	static const uint8_t ack1[] = { 0x01, 0x01, 0x07, 0x00 };
	uint8_t buffer1[sizeof(ack1)];

	status = read_check(sock, buffer1, sizeof(buffer1), ack1, NULL);
	if (status) {
		return status;
	}

	status = get_name(sock, name);
	if (status) {
		return status;
	}

	status = get_prompt_language(sock, language);
	if (status) {
		return status;
	}

	status = get_auto_off(sock, minutes);
	if (status) {
		return status;
	}

	if (has_noise_cancelling(device_id)) {
		status = get_noise_cancelling(sock, level);
		if (status) {
			return status;
		}
	} else {
		*level = NC_DNE;
	}

	static const uint8_t ack2[] = { 0x01, 0x01, 0x06, 0x00 };
	uint8_t buffer2[sizeof(ack2)];
	return read_check(sock, buffer2, sizeof(buffer2), ack2, NULL);
}

int set_pairing(int sock, enum Pairing pairing) {
	static uint8_t send[] = { 0x04, 0x08, 0x05, 0x01, ANY };
	static uint8_t ack[] = { 0x04, 0x08, 0x06, 0x01, ANY };
	send[4] = pairing;
	ack[4] = pairing;
	return write_check(sock, send, sizeof(send), ack, sizeof(ack));
}

int get_firmware_version(int sock, char version[VER_STR_LEN]) {
	static const uint8_t send[] = { 0x00, 0x05, 0x01, 0x00 };
	static const uint8_t ack[] = { 0x00, 0x05, 0x03, 0x05 };

	int status = write_check(sock, send, sizeof(send), ack, sizeof(ack));
	if (status) {
		return status;
	}

	status = read(sock, version, VER_STR_LEN - 1);
	if (status != VER_STR_LEN - 1) {
		return status ? status : 1;
	}

	version[VER_STR_LEN - 1] = '\0';
	return 0;
}

int get_serial_number(int sock, char serial[0x100]) {
	static const uint8_t send[] = { 0x00, 0x07, 0x01, 0x00 };
	static const uint8_t ack[] = { 0x00, 0x07, 0x03 };

	int status = write_check(sock, send, sizeof(send), ack, sizeof(ack));
	if (status) {
		return status;
	}

	uint8_t length;
	status = read(sock, &length, 1);
	if (status != 1) {
		return status ? status : 1;
	}

	status = read(sock, serial, length);
	if (status != length) {
		return status ? status : 1;
	}
	serial[length] = '\0';

	return 0;
}

int get_battery_level(int sock, unsigned int *level) {
	static const uint8_t send[] = { 0x02, 0x02, 0x01, 0x00 };
	static const uint8_t ack[] = { 0x02, 0x02, 0x03, 0x01 };

	int status = write_check(sock, send, sizeof(send), ack, sizeof(ack));
	if (status) {
		return status;
	}

	uint8_t level_byte;
	status = read(sock, &level_byte, 1);
	*level = level_byte;
	return 0;
}

int get_device_info(int sock, bdaddr_t address, struct Device *device) {
	static uint8_t send[10] = { 0x04, 0x05, 0x01, BT_ADDR_LEN };
	static const uint8_t ack[] = { 0x04, 0x05, 0x03 };

	memcpy(&send[4], &address.b, BT_ADDR_LEN);

	int status = write_check(sock, send, sizeof(send), ack, sizeof(ack));
	if (status) {
		return status;
	}

	uint8_t length;
	status = read(sock, &length, 1);
	if (status != 1) {
		return status ? status : 1;
	}

	status = read(sock, &device->address.b, BT_ADDR_LEN);
	if (status != BT_ADDR_LEN) {
		return status ? status : 1;
	}
	length -= BT_ADDR_LEN;

	status = memcmp(&address.b, &device->address.b, BT_ADDR_LEN);
	if (status) {
		return abs(status);
	}

	uint8_t status_byte;
	status = read(sock, &status_byte, 1);
	if (status != 1) {
		return status ? status : 1;
	}
	length -= 1;

	device->status = status_byte;

	// TODO: figure out what the first byte of garbage is for
	uint8_t garbage[2];
	status = read(sock, &garbage, sizeof(garbage));
	if (status != sizeof(garbage)) {
		return status ? status : 1;
	}
	length -= sizeof(garbage);

	status = read(sock, device->name, length);
	if (status != length) {
		return status ? status : 1;
	}
	device->name[length] = '\0';

	return 0;
}

int get_paired_devices(int sock, bdaddr_t addresses[MAX_NUM_DEVICES], size_t *num_devices,
		enum DevicesConnected *connected) {
	static const uint8_t send[] = { 0x04, 0x04, 0x01, 0x00 };
	static const uint8_t ack[] = { 0x04, 0x04, 0x03 };

	int status = write_check(sock, send, sizeof(send), ack, sizeof(ack));
	if (status) {
		return status;
	}

	uint8_t num_devices_byte;
	status = read(sock, &num_devices_byte, 1);
	if (status != 1) {
		return status ? status : 1;
	}

	// num_devices_byte = (num_devices_byte - 1) / BT_ADDR_LEN;
	// equivalent statements but more efficient
	num_devices_byte /= BT_ADDR_LEN;

	*num_devices = num_devices_byte;

	uint8_t num_connected_byte;
	status = read(sock, &num_connected_byte, 1);
	if (status != 1) {
		return status ? status : 1;
	}
	*connected = num_connected_byte;

	size_t i;
	for (i = 0; i < num_devices_byte; ++i) {
		status = read(sock, &addresses[i].b, BT_ADDR_LEN);
		if (status != BT_ADDR_LEN) {
			return status ? status : 1;
		}
	}

	return 0;
}

int connect_device(int sock, bdaddr_t address) {
	static uint8_t send[11] = { 0x04, 0x01, 0x05, BT_ADDR_LEN + 1, 0x00 };
	static uint8_t ack[10] = { 0x04, 0x01, 0x07, BT_ADDR_LEN };
	memcpy(&send[5], &address.b, BT_ADDR_LEN);
	memcpy(&ack[4], &address.b, BT_ADDR_LEN);
	return write_check(sock, send, sizeof(send), ack, sizeof(ack));
}

int disconnect_device(int sock, bdaddr_t address) {
	static uint8_t send[10] = { 0x04, 0x02, 0x05, BT_ADDR_LEN };
	static uint8_t ack[10] = { 0x04, 0x02, 0x07, BT_ADDR_LEN };
	memcpy(&send[4], &address.b, BT_ADDR_LEN);
	memcpy(&ack[4], &address.b, BT_ADDR_LEN);
	return write_check(sock, send, sizeof(send), ack, sizeof(ack));
}

int remove_device(int sock, bdaddr_t address) {
	static uint8_t send[10] = { 0x04, 0x03, 0x05, BT_ADDR_LEN };
	static uint8_t ack[10] = { 0x04, 0x03, 0x06, BT_ADDR_LEN };
	memcpy(&send[4], &address.b, BT_ADDR_LEN);
	memcpy(&ack[4], &address.b, BT_ADDR_LEN);
	return write_check(sock, send, sizeof(send), ack, sizeof(ack));
}


================================================
FILE: based.h
================================================
#ifndef BASED_H
#define BASED_H

#include <bluetooth/bluetooth.h>
#include <stddef.h>

#include "bluetooth.h"

#define BOSE_CHANNEL 8
#define MAX_NAME_LEN 0x1f
#define MAX_NUM_DEVICES 8
#define MAX_BT_PACK_LEN 0x1000
#define VER_STR_LEN 6
#define VP_MASK 0x20

enum NoiseCancelling {
	NC_HIGH = 0x01,
	NC_LOW = 0x03,
	NC_OFF = 0x00,
	NC_DNE = 0xff
};

enum AutoOff {
	AO_NEVER = 0,
	AO_5_MIN = 5,
	AO_20_MIN = 20,
	AO_40_MIN = 40,
	AO_60_MIN = 60,
	AO_180_MIN = 180
};

enum PromptLanguage {
	PL_EN = 0x21,
	PL_FR = 0x22,
	PL_IT = 0x23,
	PL_DE = 0x24,
	PL_ES = 0x26,
	PL_PT = 0x27,
	PL_ZH = 0x28,
	PL_KO = 0x29,
	PL_NL = 0x2e,
	PL_JA = 0x2f,
	PL_SV = 0x32
};

enum Pairing {
	P_ON = 0x01,
	P_OFF = 0x00
};

enum DeviceStatus {
	DS_THIS = 0x03,
	DS_CONNECTED = 0x01,
	DS_DISCONNECTED = 0x00
};

enum DevicesConnected {
	DC_ONE = 0x01,
	DC_TWO = 0x03
};

struct Device {
	bdaddr_t address;
	enum DeviceStatus status;
	char name[MAX_NAME_LEN + 1];
};

int has_noise_cancelling(unsigned int device_id);
int init_connection(int sock);
int send_packet(int sock, const void *send, size_t send_n, uint8_t recieved[MAX_BT_PACK_LEN]);
int get_device_id(int sock, unsigned int *device_id, unsigned int *index);
int set_name(int sock, const char *name);
int set_prompt_language(int sock, enum PromptLanguage language);
int set_voice_prompts(int sock, int on);
int set_auto_off(int sock, enum AutoOff minutes);
int set_noise_cancelling(int sock, enum NoiseCancelling level);
int get_device_status(int sock, char name[MAX_NAME_LEN + 1], enum PromptLanguage *language,
		enum AutoOff *minutes, enum NoiseCancelling *level);
int set_pairing(int sock, enum Pairing pairing);
int get_firmware_version(int sock, char version[VER_STR_LEN]);
int get_serial_number(int sock, char serial[0x100]);
int get_battery_level(int sock, unsigned int *level);
int get_device_info(int sock, bdaddr_t address, struct Device *device);
int get_paired_devices(int sock, bdaddr_t addresses[MAX_NUM_DEVICES], size_t *num_devices,
		enum DevicesConnected *connected);
int connect_device(int sock, bdaddr_t address);
int disconnect_device(int sock, bdaddr_t address);
int remove_device(int sock, bdaddr_t address);

#endif


================================================
FILE: bluetooth.c
================================================
#include <bluetooth/bluetooth.h>
#include <stdlib.h>

#include "bluetooth.h"

/*
 * Based on code taken from the BlueZ library.
 */

int reverse_ba2str(const bdaddr_t *ba, char *str) {
	return sprintf(str, "%2.2X:%2.2X:%2.2X:%2.2X:%2.2X:%2.2X",
			ba->b[0], ba->b[1], ba->b[2], ba->b[3], ba->b[4], ba->b[5]);
}

int reverse_str2ba(const char *str, bdaddr_t *ba) {
	int i;

	if (bachk(str) < 0) {
		memset(ba, 0, sizeof(*ba));
		return -1;
	}

	for (i = 0; i < 6; i++, str += 3)
		ba->b[i] = strtol(str, NULL, 16);

	return 0;
}


================================================
FILE: bluetooth.h
================================================
#ifndef BLUETOOTH_H
#define BLUETOOTH_H

#include <bluetooth/bluetooth.h>

#define BT_ADDR_LEN 6

int reverse_ba2str(const bdaddr_t *ba, char *str);
int reverse_str2ba(const char *str, bdaddr_t *ba);

#endif


================================================
FILE: details.txt
================================================
Project Details
===============

Firmware Updates
----------------

Here are some details on where firmware lookup details can be found:

Staging firmware lists: https://downloads-test.bose.com/lookup.xml
Beta firmware lists: https://downloads-beta.bose.com/lookup.xml
Production firmware lists: https://downloads.bose.com/lookup.xml

At this point, lookup.xml can then be used to find index.xml files corresponding
to your product. The index.xml files should give *.dfu and *.xuv files for each
version and revision.

Unfortunately, I don't know much about what the purpose of what each file does,
nor do I know how to properly use them to upgrade the device.

I do have some sniffed packets of the upgrade process but, unfortunately, I
started sniffing after my headphones were connected so they didn't capture the
headphone's address. As a result, Wireshark doesn't recognise any of the packets
as SPP packets. Instead, it sees them as L2CAP packets where the 'Frame is out
of any "connection handle" session'. If someone could help me fix this or send
in their own sniffed packets, that would be great.

Media Related
-------------

'>' means packet sent and '<' means packet received

I currently have the following details about media keys but I cannot seem to get
them to work. I believe that you need to send a packet or somehow confirm to the
headphones that you wish to control a particular device. I haven't discovered a
packet that makes that does this yet, though.

Media Keys

> 05 03 05 01 xx
xx = 01: send play key to connected device (02 may mean pause; currently unsure)
xx = 03: send next key
xx = 04: send previous key

Volume

> 05 05 02 01 xx
00 <= xx <= 18 (where xx is the volume)

It also appears that each device has a unique volume associated with it.

Active Device

> 05 01 01 00
< 05 01 03 09 00 02 01 xx xx xx xx xx xx

xxxxxxxxxxxx: address of the current active device

Currently, unsure if any other bytes may or may not vary other than the address.

Get Music Status

> 05 02 05 00
< 05 02 07 00 05 03 03 02 01 fe 05 04 03 03 xx yy yy 05 05 03 02 19 0b zz 06 07
  00
xx = 02: paused
xx = 01: playing
xx = 00: unknown
yyyy: elapsed time of music (may be ffff for unknown?)
00 <= zz <= 18: volume

< 05 02 04 01 0c
sent if unknown music


================================================
FILE: main.c
================================================
#include <bluetooth/bluetooth.h>
#include <bluetooth/rfcomm.h>
#include <getopt.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "based.h"
#include "bluetooth.h"
#include "util.h"

static const char *program_name;

static void usage() {
	printf("Usage: %s [options] <address>\n"
		"\t-h, --help\n"
		"\t\tPrint the help message.\n"
		"\t-n <name>, --name=<name>\n"
		"\t\tChange the name of the device.\n"
		"\t-c <level>, --noise-cancelling=<level>\n"
		"\t\tChange the noise cancelling level.\n"
		"\t\tlevel: high, low, off\n"
		"\t-o <minutes>, --auto-off=<minutes>\n"
		"\t\tChange the auto-off time.\n"
		"\t\tminutes: never, 5, 20, 40, 60, 180\n"
		"\t-l <language>, --prompt-language=<language>\n"
		"\t\tChange the voice-prompt language.\n"
		"\t\tlanguage: en, fr, it, de, es, pt, zh, ko, nl, ja, sv\n"
		"\t-v <switch>, --voice-prompts=<switch>\n"
		"\t\tChange whether voice-prompts are on or off.\n"
		"\t\tswitch: on, off\n"
		"\t-d, --device-status\n"
		"\t\tPrint the device status information. This includes its name, language,\n"
		"\t\tvoice-prompts, auto-off and noise cancelling settings.\n"
		"\t-p <status>, --pairing=<status>\n"
		"\t\tChange whether the device is pairing.\n"
		"\t\tstatus: on, off\n"
		"\t-f, --firmware-version\n"
		"\t\tPrint the firmware version on the device.\n"
		"\t-s, --serial-number\n"
		"\t\tPrint the serial number of the device.\n"
		"\t-b, --battery-level\n"
		"\t\tPrint the battery level of the device as a percent.\n"
		"\t-a, --paired-devices\n"
		"\t\tPrint the devices currently connected to the device.\n"
		"\t\t!: indicates the current device\n"
		"\t\t*: indicates other connected devices\n"
		"\t--connect-device=<address>\n"
		"\t\tAttempt to connect to the device at address.\n"
		"\t--disconnect-device=<address>\n"
		"\t\tDisconnect the device at address.\n"
		"\t--remove-device=<address>\n"
		"\t\tRemove the device at address from the pairing list.\n"
		"\t--device-id\n"
		"\t\tPrint the device id followed by the index revision.\n"
		, program_name);
}

static int do_set_name(int sock, const char *arg) {
	char name_buffer[MAX_NAME_LEN + 1] = { 0 };
	int status;

	if (strlen(arg) > MAX_NAME_LEN) {
		fprintf(stderr, "Name exceeds %d character maximum. Truncating.\n", MAX_NAME_LEN);
		status = 1;
	} else {
		strncpy(name_buffer, arg, MAX_NAME_LEN);
		status = set_name(sock, name_buffer);
	}
	return status;
}

static int do_set_prompt_language(int sock, const char *arg) {
	enum PromptLanguage pl;

	if (strcmp(arg, "en") == 0) {
		pl = PL_EN;
	} else if (strcmp(arg, "fr") == 0) {
		pl = PL_FR;
	} else if (strcmp(arg, "it") == 0) {
		pl = PL_IT;
	} else if (strcmp(arg, "de") == 0) {
		pl = PL_DE;
	} else if (strcmp(arg, "es") == 0) {
		pl = PL_ES;
	} else if (strcmp(arg, "pt") == 0) {
		pl = PL_PT;
	} else if (strcmp(arg, "zh") == 0) {
		pl = PL_ZH;
	} else if (strcmp(arg, "ko") == 0) {
		pl = PL_KO;
	} else if (strcmp(arg, "nl") == 0) {
		pl = PL_NL;
	} else if (strcmp(arg, "ja") == 0) {
		pl = PL_JA;
	} else if (strcmp(arg, "sv") == 0) {
		pl = PL_SV;
	} else {
		fprintf(stderr, "Invalid prompt language argument: %s\n", arg);
		usage();
		return 1;
	}

	return set_prompt_language(sock, pl);
}

static int do_set_voice_prompts(int sock, const char *arg) {
	int on;

	if (strcmp(arg, "on") == 0) {
		on = 1;
	} else if (strcmp(arg, "off") == 0) {
		on = 0;
	} else {
		fprintf(stderr, "Invalid voice prompt argument: %s\n", arg);
		usage();
		return 1;
	}

	return set_voice_prompts(sock, on);
}

static int do_set_auto_off(int sock, const char *arg) {
	enum AutoOff ao;

	int parsed = atoi(arg);

	switch (parsed) {
		case AO_5_MIN:
		case AO_20_MIN:
		case AO_40_MIN:
		case AO_60_MIN:
		case AO_180_MIN:
			ao = parsed;
			break;
		default:
			if (strcmp(arg, "never") == 0) {
				ao = AO_NEVER;
			} else {
				fprintf(stderr, "Invalid auto-off argument: %s\n", arg);
				usage();
				return 1;
			}
	}

	return set_auto_off(sock, ao);
}

static int do_set_noise_cancelling(int sock, const char *arg) {
	enum NoiseCancelling nc;

	if (strcmp(arg, "high") == 0) {
		nc = NC_HIGH;
	} else if (strcmp(arg, "low") == 0) {
		nc = NC_LOW;
	} else if (strcmp(arg, "off") == 0) {
		nc = NC_OFF;
	} else {
		fprintf(stderr, "Invalid noise cancelling argument: %s\n", arg);
		usage();
		return 1;
	}

	unsigned int device_id;
	unsigned int index;
	int status = get_device_id(sock, &device_id, &index);
	if (status) {
		return status;
	}

	if (!has_noise_cancelling(device_id)) {
		fprintf(stderr, "This device does not have noise cancelling.\n");
		usage();
		return 1;
	}

	return set_noise_cancelling(sock, nc);
}

static int do_get_device_status(int sock) {
	char name[MAX_NAME_LEN + 1];
	enum PromptLanguage pl;
	enum AutoOff ao;
	enum NoiseCancelling nc;

	int status = get_device_status(sock, name, &pl, &ao, &nc);
	if (status) {
		return status;
	}

	char *print;
	printf("Name: %s\n", name);

	switch (pl | VP_MASK) {
		case PL_EN:
			print = "en";
			break;
		case PL_FR:
			print = "fr";
			break;
		case PL_IT:
			print = "it";
			break;
		case PL_DE:
			print = "de";
			break;
		case PL_ES:
			print = "es";
			break;
		case PL_PT:
			print = "pt";
			break;
		case PL_ZH:
			print = "zh";
			break;
		case PL_KO:
			print = "ko";
			break;
		case PL_NL:
			print = "nl";
			break;
		case PL_JA:
			print = "ja";
			break;
		case PL_SV:
			print = "sv";
			break;
		default:
			return 1;
	}
	printf("Language: %s\n", print);
	printf("Voice Prompts: %s\n", pl & VP_MASK ? "on" : "off");

	printf("Auto-Off: ");
	if (ao) {
		printf("%d", ao);
	} else {
		printf("never");
	}
	printf("\n");

	if (nc != NC_DNE) {
		switch (nc) {
			case NC_HIGH:
				print = "high";
				break;
			case NC_LOW:
				print = "low";
				break;
			case NC_OFF:
				print = "off";
				break;
			default:
				return 1;
		}
		printf("Noise Cancelling: %s\n", print);
	}

	return 0;
}

static int do_set_pairing(int sock, const char *arg) {
	enum Pairing p;

	if (strcmp(arg, "on") == 0) {
		p = P_ON;
	} else if (strcmp(arg, "off") == 0) {
		p = P_OFF;
	} else {
		fprintf(stderr, "Invalid pairing argument: %s\n", arg);
		usage();
		return 1;
	}

	return set_pairing(sock, p);
}

static int do_get_firmware_version(int sock) {
	char version[VER_STR_LEN];
	int status = get_firmware_version(sock, version);

	if (status) {
		return status;
	}

	printf("%s\n", version);
	return 0;
}

static int do_get_serial_number(int sock) {
	char serial[0x100];
	int status = get_serial_number(sock, serial);

	if (status) {
		return status;
	}

	printf("%s\n", serial);
	return 0;
}

static int do_get_battery_level(int sock) {
	unsigned int level;
	int status = get_battery_level(sock, &level);

	if (status) {
		return status;
	}

	printf("%d\n", level);
	return 0;
}

static int do_get_paired_devices(int sock) {
	bdaddr_t devices[MAX_NUM_DEVICES];
	size_t num_devices;
	enum DevicesConnected connected;

	int status = get_paired_devices(sock, devices, &num_devices, &connected);
	if (status) {
		return status;
	}

	unsigned int num_connected;
	switch (connected) {
		case DC_ONE:
			num_connected = 1;
			break;
		case DC_TWO:
			num_connected = 2;
			break;
		default:
			return 1;
	}
	printf("Devices connected: %d\n", num_connected);

	size_t i;
	for (i = 0; i < num_devices; ++i) {
		struct Device device;
		status = get_device_info(sock, devices[i], &device);
		if (status) {
			return status;
		}

		char address[18];
		reverse_ba2str(&device.address, address);

		char status_symb;
		switch (device.status) {
			case DS_THIS:
				status_symb = '!';
				break;
			case DS_CONNECTED:
				status_symb = '*';
				break;
			case DS_DISCONNECTED:
				status_symb = ' ';
				break;
			default:
				return 1;
		}

		printf("%c %s %s\n", status_symb, address, device.name);
	}

	return 0;
}

static int do_connect_device(int sock, const char *arg) {
	bdaddr_t address;
	reverse_str2ba(arg, &address);
	return connect_device(sock, address);
}

static int do_disconnect_device(int sock, const char *arg) {
	bdaddr_t address;
	reverse_str2ba(arg, &address);
	return disconnect_device(sock, address);
}

static int do_remove_device(int sock, const char *arg) {
	bdaddr_t address;
	reverse_str2ba(arg, &address);
	return remove_device(sock, address);
}

static int do_get_device_id(int sock) {
	unsigned int device_id;
	unsigned int index;
	int status = get_device_id(sock, &device_id, &index);

	if (status) {
		return status;
	}

	printf("0x%04x %d\n", device_id, index);
	return 0;
}

static int do_send_packet(int sock, const char *arg) {
	uint8_t send[sizeof(arg) / 2];
	size_t i;
	for (i = 0; arg[i * 2]; ++i) {
		if (strtobyte(&arg[i * 2], &send[i]) != 0) {
			return 1;
		}
	}

	uint8_t recieved[MAX_BT_PACK_LEN];
	int recieved_n = send_packet(sock, send, sizeof(send), recieved);
	if (recieved_n < 0) {
		return recieved_n;
	}

	for (i = 0; i < recieved_n; ++i) {
		printf("%02x ", recieved[i]);
	}
	printf("\n");
	return 0;
}

int main(int argc, char *argv[]) {
	static const char *short_opt = "hn:l:v:o:c:dp:fsba";
	static const struct option long_opt[] = {
		{ "help", no_argument, NULL, 'h' },
		{ "name", required_argument, NULL, 'n' },
		{ "prompt-language", required_argument, NULL, 'l' },
		{ "voice-prompts", required_argument, NULL, 'v' },
		{ "auto-off", required_argument, NULL, 'o' },
		{ "noise-cancelling", required_argument, NULL, 'c' },
		{ "device-status", no_argument, NULL, 'd' },
		{ "pairing", required_argument, NULL, 'p' },
		{ "firmware-version", no_argument, NULL, 'f' },
		{ "serial-number", no_argument, NULL, 's' },
		{ "battery-level", no_argument, NULL, 'b' },
		{ "paired-devices", no_argument, NULL, 'a' },
		{ "connect-device", required_argument, NULL, 2 },
		{ "disconnect-device", required_argument, NULL, 3 },
		{ "remove-device", required_argument, NULL, 4 },
		{ "device-id", no_argument, NULL, 5 },
		{ "send-packet", required_argument, NULL, 1 },
		{ 0, 0, 0, 0 }
	};

	static const struct timeval send_timeout = { 5, 0 };
	static const struct timeval recieve_timeout = { 1, 0 };
	int sock = socket(AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM);

	if (setsockopt(sock, SOL_SOCKET, SO_SNDTIMEO, &send_timeout, sizeof(send_timeout)) < 0) {
		perror("Could not set socket send timeout");
		return 1;
	}

	if (setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, &recieve_timeout, sizeof(recieve_timeout)) < 0) {
		perror("Could not set socket recieve timeout");
		return 1;
	}

	program_name = argv[0];

	// Find connection address and verify options
	int opt;
	int opt_index = 0;
	while ((opt = getopt_long(argc, argv, short_opt, long_opt, &opt_index)) > 0) {
		switch (opt) {
			case 'h':
				usage();
				return 0;
			case '?':
				usage();
				return 1;
			default:
				break;
		}
	}

	if (argc - 1 != optind) {
		fprintf(stderr, argc <= optind
				? "An address argument must be given.\n"
				: "Only one address argument may be given.\n");
		usage();
		return 1;
	}

	struct sockaddr_rc address;
	address.rc_family = AF_BLUETOOTH;
	address.rc_channel = BOSE_CHANNEL;
	if (str2ba(argv[optind], &address.rc_bdaddr) != 0) {
		fprintf(stderr, "Invalid bluetooth address: %s\n", argv[optind]);
		return 1;
	}

	if (connect(sock, (struct sockaddr *) &address, sizeof(address)) != 0) {
		perror("Could not connect to Bluetooth device");
		return 1;
	}

	int status = init_connection(sock);

	opt_index = 0;
	optind = 1;
	while ((opt = getopt_long(argc, argv, short_opt, long_opt, &opt_index)) > 0) {
		if (status) {
			break;
		}

		switch (opt) {
			case 'n':
				status = do_set_name(sock, optarg);
				break;
			case 'l':
				status = do_set_prompt_language(sock, optarg);
				break;
			case 'v':
				status = do_set_voice_prompts(sock, optarg);
				break;
			case 'o':
				status = do_set_auto_off(sock, optarg);
				break;
			case 'c':
				status = do_set_noise_cancelling(sock, optarg);
				break;
			case 'd':
				status = do_get_device_status(sock);
				break;
			case 'p':
				status = do_set_pairing(sock, optarg);
				break;
			case 'f':
				status = do_get_firmware_version(sock);
				break;
			case 's':
				status = do_get_serial_number(sock);
				break;
			case 'b':
				status = do_get_battery_level(sock);
				break;
			case 'a':
				status = do_get_paired_devices(sock);
				break;
			case 2:
				status = do_connect_device(sock, optarg);
				break;
			case 3:
				status = do_disconnect_device(sock, optarg);
				break;
			case 4:
				status = do_remove_device(sock, optarg);
				break;
			case 5:
				status = do_get_device_id(sock);
				break;
			case 1:
				status = do_send_packet(sock, optarg);
				break;
			default:
				status = 1;
		}
	}

	if (status < 0) {
		perror("Error trying to change setting");
	}

	close(sock);
	return status;
}


================================================
FILE: util.c
================================================
#include <stdint.h>

static uint8_t get_value(char c) {
	if ('0' <= c && c <= '9') {
		return c - '0';
	} else if ('A' <= c && c <= 'F') {
		return c - 'A' + 10;
	} else if ('a' <= c && c <= 'f') {
		return c - 'a' + 10;
	} else {
		return 16;
	}
}

int strtobyte(const char *str, uint8_t *byte) {
	uint8_t total = 0;
	uint8_t part;

	part = get_value(str[0]);
	if (part > 15) {
		return 1;
	}
	total += 0x10 * part;

	part = get_value(str[1]);
	if (part > 15) {
		return 1;
	}
	total += part;

	*byte = total;
	return 0;
}


================================================
FILE: util.h
================================================
#ifndef UTIL_H
#define UTIL_H

int strtobyte(const char *str, uint8_t *byte);

#endif