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ckoz0013.c
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/* -*- Mode: C++; c-file-style: "k&r" -*- */
/*
* Reverse engineered from a variety of sources, for the purpose of
* interoperability.
*
* Copyright 2016 Karl Anders Oygard. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include <errno.h>
#include <signal.h>
#include <string.h>
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <mosquitto.h>
#include <libusb-1.0/libusb.h>
#include <poll.h>
#define mqtt_host "192.168.1.1"
#define mqtt_port 1883
#define EP_IN (4 | LIBUSB_ENDPOINT_IN)
#define EP_OUT (5 | LIBUSB_ENDPOINT_OUT)
#define CTRL_IN (LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_IN)
#define CTRL_OUT (LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_OUT)
#define USB_RQ 0x04
#define INTR_LENGTH 62
#include "lib_crc.h"
struct mosquitto* mosq;
unsigned short
calculate_crc(char* buf, size_t len)
{
unsigned short crc = 0;
size_t i = 0;
for (i = 0; i < len; i++)
crc = update_crc_kermit(crc, buf[i]);
return crc;
}
enum message_action
{
A = 0x02, // 2 bytes
REPORT = 0x03,
B = 0x04, // Init or something? 0x04 0x0b
INIT = 0x0b, // No parameters
C = 0x11,
DISCOVER = 0x17,
STARTSTOP = 0x1a, // First thing to send, just one byte payload 1 = start, 0 = stop
SENDMSG = 0x1b,
E = 0x22,
F = 0x30,
G = 0x31,
H = 0x33,
I = 0x34,
J = 0x36, // No parameters
Q = 0x39,
P = 0x40, // two bytes (2, 0 or 2, 1)
SERIALNO = 0x42, // No parameters
SOMESTRING = 0x44, // No parameters
M = 0x47, // 9 bytes long, one long + extra byte
N = 0x48, // 9 bytes long, one long + extra byte
O = 0x49,
MCI_PT_TX = 0xB1,
MCI_PT_RX = 0xC1
};
enum message_action_type
{
MSG_ACK = 0x01,
MSG_STAY_ONLINE = 0x09,
MSG_ALLIVE = 0x11,
MSG_GET_OFFLINE = 0x18,
MSG_GET_EEPROM = 0x30,
MSG_SET_EEPROM = 0x31,
MSG_GET_CRC = 0x32,
MSG_TIME = 0x37,
MSG_DATE = 0x38,
MSG_PAKET = 0x39,
MSG_KILL = 0x43,
MSG_FACTORY = 0x44,
MSG_ON = 0x50,
MSG_OFF = 0x51,
MSG_SWITCH_ON = 0x52,
MSG_SWITCH_OFF = 0x53,
MSG_UP_PRESSED = 0x54,
MSG_UP_RELEASED = 0x55,
MSG_DOWN_PRESSED = 0x56,
MSG_DOWN_RELEASED = 0x57,
MSG_PWM = 0x59,
MSG_FORCED = 0x5a,
MSG_SINGLE_ON = 0x5b,
MSG_TOGGLE = 0x61,
MSG_VALUE = 0x62,
MSG_ZU_KALT = 0x63,
MSG_ZU_WARM = 0x64,
MSG_STATUS = 0x70,
MSG_STATUS_APPL = 0x71,
MSG_STATUS_REQ_APPL = 0x72,
MSG_NONE = 0x1000
};
struct Argh
{
const char* name;
message_action_type type;
};
Argh message_lookup[] =
{
{ "MSG_ACK", MSG_ACK},
{ "MSG_STAY_ONLINE", MSG_STAY_ONLINE},
{ "MSG_ALLIVE", MSG_ALLIVE},
{ "MSG_GET_OFFLINE", MSG_GET_OFFLINE},
{ "MSG_GET_EEPROM", MSG_GET_EEPROM},
{ "MSG_SET_EEPROM", MSG_SET_EEPROM},
{ "MSG_GET_CRC", MSG_GET_CRC},
{ "MSG_TIME", MSG_TIME},
{ "MSG_DATE", MSG_DATE},
{ "MSG_PAKET", MSG_PAKET},
{ "MSG_KILL", MSG_KILL},
{ "MSG_FACTORY", MSG_FACTORY},
{ "MSG_ON", MSG_ON},
{ "MSG_OFF", MSG_OFF},
{ "MSG_SWITCH_ON", MSG_SWITCH_ON},
{ "MSG_SWITCH_OFF", MSG_SWITCH_OFF},
{ "MSG_UP_PRESSED", MSG_UP_PRESSED},
{ "MSG_UP_RELEASED", MSG_UP_RELEASED},
{ "MSG_DOWN_PRESSED", MSG_DOWN_PRESSED},
{ "MSG_DOWN_RELEASED", MSG_DOWN_RELEASED},
{ "MSG_PWM", MSG_PWM},
{ "MSG_FORCED", MSG_FORCED},
{ "MSG_SINGLE_ON", MSG_SINGLE_ON},
{ "MSG_TOGGLE", MSG_TOGGLE},
{ "MSG_VALUE", MSG_VALUE},
{ "MSG_ZU_KALT", MSG_ZU_KALT},
{ "MSG_ZU_WARM", MSG_ZU_WARM},
{ "MSG_STATUS", MSG_STATUS},
{ "MSG_STATUS_APPL", MSG_STATUS_APPL},
{ "MSG_STATUS_REQ_APPL", MSG_STATUS_REQ_APPL},
{ NULL, MSG_NONE}
};
enum battery_state
{
BATTERY_EMPTY = 0x0,
BATTERY_WEAK = 0x1,
BATTERY_AVERAGE = 0x2,
BATTERY_ALMOSTFULL = 0x3,
BATTERY_FULL = 0x4,
POWERLINE = 0x3f,
};
enum data_type
{
NO_TELEGRAM_DATA = 0x00,
PERCENT = 0x01,
DATA_TYPE_UCHAR = 0x02,
SSHORT_1COMMA = 0x03,
ANSI_FLOAT = 0x04,
MEMORY = 0x06,
MEMORY_REQ = 0x07,
ALLIVE_FILTER = 0x0c,
USHORT_NO_COMMA = 0x0d,
RC_DATA = 0x17,
MEMORY32 = 0x1a,
MEMORY32_REQ = 0x1b,
DATA_TYPE_TIME = 0x1e,
DATA_TYPE_DATE = 0x1f,
DATA_TYPE_PACKET = 0x20,
DATA_TYPE_UNSIGNED_LONG = 0x25,
DATA_TYPE_ULONG_1COMMA = 0x26,
DATA_TYPE_ULONG_2COMMA = 0x27,
DATA_TYPE_ULONG_3COMMA = 0x28,
USHORT_1COMMA = 0x29,
USHORT_2COMMA = 0x2a,
USHORT_3COMMA = 0x2b,
DIMPLEX_DATA = 0x2d,
DATA_TYPE_SLONG_NOCOMMA = 0x2e,
DATA_TYPE_SLONG_1COMMA = 0x2f,
DATA_TYPE_SLONG_2COMMA = 0x30,
DATA_TYPE_SLONG_3COMMA = 0x31,
DATA_TYPE_SSHORT_NOCOMMA = 0x32,
DATA_TYPE_SSHORT_2COMMA = 0x33,
DATA_TYPE_SSHORT_3COMMA = 0x34,
DATE = 0x37,
ARRAY = 0xf0
};
const char*
lookup_message_type(message_action_type type)
{
for (int i = 0; message_lookup[i].name; ++i)
if (message_lookup[i].type == type)
return message_lookup[i].name;
return NULL;
}
const char*
Blah(int type)
{
// May be off by one!
switch (type)
{
case 0:
return "Taster";
case 1:
return "Taster 2-fach";
case 2:
return "Taster 4-fach";
case 4:
case 50:
return "Raumcontroller";
case 15:
return "Schaltaktor";
case 16:
case 76:
return "Dimmaktor";
case 17:
case 26:
return "Jalousieaktor";
case 18:
return "Bin 230";
case 19:
return "Bin Batt";
case 20:
return "Fernbedienung";
case 21:
return "Home Manager";
case 22:
return "Temperatursensor";
case 23:
return "Analogeingang";
case 24:
return "Analogaktor";
case 25:
case 66:
return "Room-Manager";
case 27:
return "Komm.-Schnittstelle";
case 28:
return "Bewegungsmelder";
case 47:
return "Fernbedienung 2K";
case 48:
return "Fernbedienung 12K";
case 49:
return "FB Display";
return "Fernbedienung LCD";
case 51:
return "Router";
case 52:
return "Impulseingang";
case 53:
return "Energiesensor";
return "EMS";
case 54:
return "Heizungsaktor";
case 55:
return "FB Alarmtaster";
case 56:
return "BOSCOS Interface";
case 57:
return "Testgerät";
case 58:
return "Aktor-Sensor-Kombination";
case 59:
return "Generic device";
case 60:
return "RF_CC1110";
case 61:
return "MEP-Device";
case 62:
return "Serial Interface";
return "Smart Home Controller";
case 64:
return "Heizkörperthermostat";
case 65:
return "Multi-Heizaktor 6-fach";
case 67:
return "Rosetta-Sensor";
case 68:
return "Rosetta-Router";
case 69:
return "Ethernet Communication Interface";
case 70:
return "MCH_12x-Testgerät";
return "Multi-Heizaktor 12-fach";
case 71:
return "Kommunikationsstick";
return "USB-Gateway";
case 73:
return "Schaltaktor neu";
case 75:
return "Fenster/Tür Sensor";
default:
return NULL;
}
}
#pragma pack(push,1)
struct message
{
unsigned char begin; // Always 5A
unsigned char size;
unsigned char action;
union
{
char data[59];
struct {
unsigned char type;
short int magic;
unsigned char sequence; // bitfield aaaa:ssss (a = 4 means something)
char something2; // bitfield aaa:b:0:cc:d
char batterystate; // bitfield 00:aaa:bbb
char channel;
int source;
short int somethingelse;
int destination;
char signalstrength[2];
short int time2;
short int strength;
unsigned char end; // Always A5
} report;
struct {
unsigned char type;
unsigned char magic; // 00
unsigned char length; // 15
unsigned char sequence; // 10-1f
unsigned char bitfield; // aaaaaaa:b, b = wants ack
unsigned char magic3; // 07
short int magic1; // 00 80
int source;
int destination;
short int magic2; // 01 00 or 0c 00
unsigned char level;
short int crc;
unsigned char end; // Always A5
} sendmsg;
struct {
int serialno;
} serialno;
struct {
unsigned char stop;
unsigned char end; // Always A5
} startstop;
struct {
int blah;
unsigned char index;
unsigned char blah3; // A5 if short packet
unsigned char blah4;
unsigned char blah5; // Always A5
} m;
struct {
unsigned char datapoint;
unsigned char opcode;
unsigned char value;
int unused;
} datapoint_tx;
struct {
unsigned char datapoint;
unsigned char infoshort;
unsigned char datatype;
int data;
unsigned char unknown;
unsigned char signal;
unsigned char battery;
} datapoint_rx;
struct {
short int something;
unsigned char end;
} i;
struct {
unsigned char end; // Always A5
} somestring;
};
};
#pragma pack(pop)
static int next_state(void);
enum
{
STATE_AWAIT_INIT = 1,
STATE_READY,
STATE_22,
STATE_H,
STATE_SERIALNO,
STATE_47,
STATE_44,
STATE_SECOND_47,
STATE_STARTSTOP,
STATE_STARTSTOP2
};
struct xcomfort_device
{
xcomfort_device* next;
int serial_number;
bool waiting_for_ack;
int last_known_value;
int desired_value;
};
xcomfort_device* device_list = NULL;
bool message_in_transit = false;
bool waiting_for_ack = false;
static int state = 0;
static struct libusb_device_handle* devh = NULL;
static unsigned char recvbuf[INTR_LENGTH];
static struct libusb_transfer* recv_transfer = NULL;
static unsigned char sendbuf[INTR_LENGTH];
static struct libusb_transfer* send_transfer = NULL;
static int do_exit = 0;
void
construct_sendmsg(struct message* question, int target, message_action_type type, unsigned char level)
{
static int sequence = 0x10;
question->begin = 0x5a;
question->size = 0x19;
question->action = SENDMSG;
question->sendmsg.type = type;
question->sendmsg.magic = 0x0;
question->sendmsg.length = 0x15;
question->sendmsg.sequence = sequence++;
question->sendmsg.bitfield = 0x82; // wants ack
question->sendmsg.magic3 = 0x07;
question->sendmsg.magic1 = 0x8000;
question->sendmsg.source = 0x0;
question->sendmsg.destination = target;
question->sendmsg.magic2 = 0x1;
question->sendmsg.level = level;
question->sendmsg.crc = calculate_crc((char*) &(question->sendmsg), sizeof(question->sendmsg) - 3);
question->sendmsg.end = 0xa5;
if (sequence == 0x20)
sequence = 0x10;
for (int i = 0; i < 0x16; ++i)
printf("%02hhx", question->data[i]);
printf("\n");
}
void
send_next_message()
{
xcomfort_device* i;
for (i = device_list; i; i = i->next)
if (i->desired_value != i->last_known_value &&
!i->waiting_for_ack)
{
message_action_type type = MSG_OFF;
struct message* question = (struct message*) sendbuf;
int r;
if (i->desired_value == 255)
type = MSG_ON;
else
if (i->desired_value > 0)
type = MSG_FORCED;
i->waiting_for_ack = true;
construct_sendmsg(question, i->serial_number, type, i->desired_value);
r = libusb_submit_transfer(send_transfer);
if (r < 0)
fprintf(stderr, "failed to submit transfer\n");
assert(!message_in_transit);
message_in_transit = true;
waiting_for_ack = true;
return;
}
}
bool
ack_received(int serial_number)
{
xcomfort_device* i;
waiting_for_ack = false;
for (i = device_list; i; i = i->next)
if (i->serial_number == serial_number)
if (i->waiting_for_ack)
{
printf("received expected ack for %d to change to %d\n", serial_number, i->desired_value);
i->waiting_for_ack = false;
i->last_known_value = i->desired_value;
send_next_message();
return true;
}
else
break;
return false;
}
void
set_value(int serial_number, int value, bool reported = false)
{
// See if it's already known and inactive
xcomfort_device* i;
for (i = device_list; i; i = i->next)
if (i->serial_number == serial_number)
{
if (i->desired_value == value)
{
// This value is already desired, nothing to do
printf("device %d already setting to %d\n", serial_number, value);
return;
}
else
if (i->last_known_value == value)
if (!i->waiting_for_ack)
{
// Value is already active, nothing to do
printf("device %d already set to %d\n", serial_number, value);
return;
}
if (reported)
{
i->last_known_value = value;
printf("reported change %d to %d\n", serial_number, value);
}
else
printf("have to change %d to %d\n", serial_number, value);
i->desired_value = value;
i->waiting_for_ack = false;
break;
}
if (!i)
{
// Previously unknown device
printf("creating %d with value %d\n", serial_number, value);
i = (xcomfort_device*) malloc(sizeof(xcomfort_device));
if (!i)
return;
i->next = device_list;
i->serial_number = serial_number;
if (reported)
i->last_known_value = value;
else
i->last_known_value = 0;
i->desired_value = value;
i->waiting_for_ack = false;
device_list = i;
}
if (!reported &&
!message_in_transit &&
!waiting_for_ack)
send_next_message();
}
static int
next_state(void)
{
int r = 0;
switch (state)
{
case STATE_AWAIT_INIT:
state = STATE_AWAIT_INIT;
break;
default:
printf("unrecognised state %d\n", state);
}
if (r < 0)
{
fprintf(stderr, "error detected changing state\n");
return r;
}
return 0;
}
static void LIBUSB_CALL
cb_recv(struct libusb_transfer* transfer)
{
struct message* answer = (struct message*) transfer->buffer;
if (transfer->status != LIBUSB_TRANSFER_COMPLETED)
{
fprintf(stderr, "irq transfer status %d?\n", transfer->status);
do_exit = 2;
libusb_free_transfer(transfer);
recv_transfer = NULL;
return;
}
switch (answer->action)
{
case REPORT:
{
static message_action_type last_type = MSG_ACK;
const char* name = lookup_message_type((message_action_type) answer->report.type);
printf("received REPORT(%s, %d): %d 0x%08x %d (battery: %d) (strength: %d) (channel: %d) %04x %02x %02x\t[",
name,
answer->size,
answer->report.sequence >> 4,
answer->report.source,
answer->report.batterystate >> 3,
answer->report.batterystate & 0x7,
*((short int*) (answer->data + answer->size - 6)),
answer->report.channel,
answer->report.magic,
answer->report.sequence,
answer->report.something2);
for (int i = 0; i < answer->size - 21; ++i)
printf("%02hhx ", answer->report.signalstrength[i]);
printf("]\n");
if (answer->report.type == MSG_ACK)
{
const char* state = NULL;
int value = 0;
ack_received(answer->report.source);
switch (last_type)
{
case MSG_ON:
state = "true";
value = 255;
break;
case MSG_OFF:
state = "false";
value = 0;
break;
default:
break;
}
if (state)
{
char topic[128];
set_value(answer->report.source, value, true);
sprintf(topic, "%08x", answer->report.source);
mosquitto_publish(mosq, NULL, topic, strlen(state), (const uint8_t*) state, 1, true);
}
}
last_type = (message_action_type) answer->report.type;
break;
}
case INIT:
{
struct message* question = (struct message*) sendbuf;
int r;
// Should be 5f 2a 5f
printf("received 0x0b INIT(%d): %02x, %02x, %02x, %02x, %02x, %02x\n",
answer->size, answer->data[0], answer->data[1], answer->data[2],
answer->data[3], answer->data[4], answer->data[5]);
question->begin = 0x5a;
question->size = 0x05;
question->action = STARTSTOP;
question->startstop.stop = 0;
question->startstop.end = 0xa5;
r = libusb_submit_transfer(send_transfer);
if (r < 0)
fprintf(stderr, "failed to submit transfer\n");
state = STATE_STARTSTOP;
}
break;
case E:
{
struct message* question = (struct message*) sendbuf;
int r;
printf("received 0x22 E(%d)\n", answer->size);
question->begin = 0x5a;
question->size = 0x05;
question->action = H;
question->startstop.stop = 1;
question->startstop.end = 0xa5;
r = libusb_submit_transfer(send_transfer);
if (r < 0)
fprintf(stderr, "failed to submit transfer\n");
state = STATE_H;
}
break;
case SERIALNO:
{
struct message* question = (struct message*) sendbuf;
int r;
printf("received 0x42 SERIALNO: %d\n", answer->serialno.serialno);
question->begin = 0x5a;
question->size = 0x04;
question->action = E;
question->somestring.end = 0xa5;
r = libusb_submit_transfer(send_transfer);
if (r < 0)
fprintf(stderr, "failed to submit transfer\n");
state = STATE_22;
}
break;
case 0x2:
printf("received 0x02(%d): %08x\n", answer->size, answer->serialno.serialno);
{
struct message* question = (struct message*) sendbuf;
int r;
printf("broadcasting MSG_ALLIVE\n");
construct_sendmsg(question, 0, MSG_ALLIVE, 0x3);
r = libusb_submit_transfer(send_transfer);
if (r < 0)
fprintf(stderr, "failed to submit transfer\n");
state = STATE_READY;
}
break;
case SOMESTRING:
{
char name[128];
struct message* question = (struct message*) sendbuf;
int r;
strcpy(name, answer->data);
printf("received 0x44 SOMESTRING(%d): %s\n", answer->size, name);
question->begin = 0x5a;
question->size = 0x04;
question->action = SERIALNO;
question->somestring.end = 0xa5;
r = libusb_submit_transfer(send_transfer);
if (r < 0)
fprintf(stderr, "failed to submit transfer\n");
state = STATE_SERIALNO;
}
break;
case 0x47:
printf("received 0x47(%d): %08x %02x %02x %02x %02x\n", answer->size, answer->m.blah, answer->m.index, answer->m.blah3, answer->m.blah4, answer->m.blah5);
if (state != STATE_SECOND_47)
{
struct message* question = (struct message*) sendbuf;
int r;
question->begin = 0x5a;
question->size = 0x09;
question->action = M;
question->m.blah = 0x50;
question->m.index = 2;
question->m.blah3 = 0xa5;
r = libusb_submit_transfer(send_transfer);
if (r < 0)
fprintf(stderr, "failed to submit transfer\n");
state = STATE_SECOND_47;
}
else
{
struct message* question = (struct message*) sendbuf;
int r;
question->begin = 0x5a;
question->size = 0x04;
question->action = SOMESTRING;
question->somestring.end = 0xa5;
r = libusb_submit_transfer(send_transfer);
if (r < 0)
fprintf(stderr, "failed to submit transfer\n");
state = STATE_44;
}
break;
default:
printf("unprocessed: received %02x: %d\n", answer->action, answer->size);
break;
}
if (libusb_submit_transfer(recv_transfer) < 0)
do_exit = 2;
}
static void LIBUSB_CALL
cb_send(struct libusb_transfer* transfer)
{
message_in_transit = false;
if (transfer->status != LIBUSB_TRANSFER_COMPLETED)
{
fprintf(stderr, "irq transfer status %d?\n", transfer->status);
do_exit = 2;
libusb_free_transfer(transfer);
send_transfer = NULL;
return;
}
switch (state)
{
case STATE_STARTSTOP2:
{
//struct message* question = (struct message*) sendbuf;
int r;
printf("----- sending i\n");
/*question->begin = 0x5a;
question->size = 0x06;
question->action = I;
question->i.something = 0xffff;
question->i.end = 0xa5;
r = libusb_submit_transfer(send_transfer);
if (r < 0)
fprintf(stderr, "failed to submit transfer\n");*/
state = STATE_READY;
}
break;
case STATE_H:
{
struct message* question = (struct message*) sendbuf;
int r;
printf("----- sending startstop 2\n");
question->begin = 0x5a;
question->size = 0x05;
question->action = STARTSTOP;
question->startstop.stop = 1;
question->startstop.end = 0xa5;
r = libusb_submit_transfer(send_transfer);
if (r < 0)
fprintf(stderr, "failed to submit transfer\n");
state = STATE_STARTSTOP2;
}
break;
case STATE_STARTSTOP:
{
struct message* question = (struct message*) sendbuf;
int r;
printf("----- sending first 0x47\n");
question->begin = 0x5a;
question->size = 0x09;
question->action = M;
question->m.blah = 0x8;
question->m.index = 6;
question->m.blah3 = 0xa5;
r = libusb_submit_transfer(send_transfer);
if (r < 0)
fprintf(stderr, "failed to submit transfer\n");
state = STATE_47;
;
}
break;
}
}
static int
init_communication(void)
{
int r;
r = libusb_submit_transfer(recv_transfer);
if (r < 0)
return r;
r = libusb_submit_transfer(send_transfer);
if (r < 0)
return r;
/* start state machine */
state = STATE_AWAIT_INIT;
return next_state();
}
static int
alloc_transfers(void)
{
recv_transfer = libusb_alloc_transfer(0);
if (!recv_transfer)
return -ENOMEM;
libusb_fill_interrupt_transfer(recv_transfer, devh, EP_IN, recvbuf,
sizeof(recvbuf), cb_recv, NULL, 0);
struct message* question = (struct message*) sendbuf;
question->begin = 0x5a;
question->size = 0x04;
question->action = INIT;
question->m.blah = 0xa5;
printf("init\n");
send_transfer = libusb_alloc_transfer(0);
if (!send_transfer)
return -ENOMEM;
libusb_fill_interrupt_transfer(send_transfer, devh, EP_OUT, sendbuf,
sizeof(sendbuf), cb_send, NULL, 0);
return 0;
}
static void
sighandler(int signum)
{
do_exit = 1;
}
void
connect_callback(mosquitto* mosq, void* obj, int result)
{
printf("connected to MQTT server, rc=%d\n", result);
}