├── requirements.txt ├── .github └── img │ └── molex.png ├── README.md ├── ace.cfg ├── extras └── ace.py └── LICENSE.md /requirements.txt: -------------------------------------------------------------------------------- 1 | pyserial==3.5 2 | pyjson==1.4.1 -------------------------------------------------------------------------------- /.github/img/molex.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/utkabobr/DuckACE/HEAD/.github/img/molex.png -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # DuckACE 2 | 3 | A Work-In-Progress driver for Anycubic Color Engine Pro for Klipper 4 | 5 | ## Pinout 6 | 7 | ![Molex](/.github/img/molex.png) 8 | 9 | - 1 - None (VCC, not required to work, ACE provides it's own power) 10 | - 2 - Ground 11 | - 3 - D- 12 | - 4 - D+ 13 | 14 | Connect them to a regular USB, no dark magic is required. -------------------------------------------------------------------------------- /ace.cfg: -------------------------------------------------------------------------------- 1 | # Please check that [save_variables] is above [ace] if you're using different config 2 | [save_variables] 3 | filename: ~/vars.cfg 4 | 5 | [respond] 6 | 7 | [ace] 8 | serial: /dev/ttyACM0 9 | baud: 115200 10 | # Default feeding speed, 10-25 in stock 11 | feed_speed: 25 12 | # Default retraction speed, 10-25 in stock 13 | retract_speed: 25 14 | # Length of the retract to make for toolchange 15 | toolchange_retract_length: 100 16 | # Park to toolhead hit count, default is 5, can be lowered if your setup works stably on lower values 17 | park_hit_count: 5 18 | # Max dryer temperature. If you want to fry your dryer, then you can! (Just joking, should be safe around ~60, but it's not tested yet) 19 | max_dryer_temperature: 55 20 | # Disables feed assist after toolchange. Defaults to true 21 | disable_assist_after_toolchange: True 22 | 23 | 24 | [gcode_macro _ACE_PRE_TOOLCHANGE] 25 | gcode: 26 | # No-op 27 | 28 | [gcode_macro _ACE_POST_TOOLCHANGE] 29 | gcode: 30 | # No-op 31 | 32 | [gcode_macro _ACE_ON_EMPTY_ERROR] 33 | gcode: 34 | {action_respond_info("Spool is empty")} 35 | {% if printer.idle_timeout.state == "Printing" %} 36 | PAUSE 37 | {% endif %} 38 | 39 | 40 | [gcode_macro T0] 41 | gcode: 42 | ACE_CHANGE_TOOL TOOL=0 43 | 44 | [gcode_macro T1] 45 | gcode: 46 | ACE_CHANGE_TOOL TOOL=1 47 | 48 | [gcode_macro T2] 49 | gcode: 50 | ACE_CHANGE_TOOL TOOL=2 51 | 52 | [gcode_macro T3] 53 | gcode: 54 | ACE_CHANGE_TOOL TOOL=3 -------------------------------------------------------------------------------- /extras/ace.py: -------------------------------------------------------------------------------- 1 | import serial, threading, time, logging, json, struct, queue, traceback 2 | 3 | class DuckAce: 4 | def __init__(self, config): 5 | self.printer = config.get_printer() 6 | self.reactor = self.printer.get_reactor() 7 | self.gcode = self.printer.lookup_object('gcode') 8 | self._name = config.get_name() 9 | if self._name.startswith('ace '): 10 | self._name = self._name[4:] 11 | self.variables = self.printer.lookup_object('save_variables').allVariables 12 | 13 | self.serial_name = config.get('serial', '/dev/ttyACM0') 14 | self.baud = config.getint('baud', 115200) 15 | self.feed_speed = config.getint('feed_speed', 50) 16 | self.retract_speed = config.getint('retract_speed', 50) 17 | self.toolchange_retract_length = config.getint('toolchange_retract_length', 100) 18 | self.park_hit_count = config.getint('park_hit_count', 5) 19 | self.max_dryer_temperature = config.getint('max_dryer_temperature', 55) 20 | self.disable_assist_after_toolchange = config.getboolean('disable_assist_after_toolchange', True) 21 | 22 | self._callback_map = {} 23 | self._feed_assist_index = -1 24 | self._request_id = 0 25 | self._last_assist_count = 0 26 | self._assist_hit_count = 0 27 | self._park_in_progress = False 28 | self._park_is_toolchange = False 29 | self._park_previous_tool = -1 30 | self._park_index = -1 31 | 32 | # Default data to prevent exceptions 33 | self._info = { 34 | 'status': 'ready', 35 | 'dryer': { 36 | 'status': 'stop', 37 | 'target_temp': 0, 38 | 'duration': 0, 39 | 'remain_time': 0 40 | }, 41 | 'temp': 0, 42 | 'enable_rfid': 1, 43 | 'fan_speed': 7000, 44 | 'feed_assist_count': 0, 45 | 'cont_assist_time': 0.0, 46 | 'slots': [ 47 | { 48 | 'index': 0, 49 | 'status': 'empty', 50 | 'sku': '', 51 | 'type': '', 52 | 'color': [0, 0, 0] 53 | }, 54 | { 55 | 'index': 1, 56 | 'status': 'empty', 57 | 'sku': '', 58 | 'type': '', 59 | 'color': [0, 0, 0] 60 | }, 61 | { 62 | 'index': 2, 63 | 'status': 'empty', 64 | 'sku': '', 65 | 'type': '', 66 | 'color': [0, 0, 0] 67 | }, 68 | { 69 | 'index': 3, 70 | 'status': 'empty', 71 | 'sku': '', 72 | 'type': '', 73 | 'color': [0, 0, 0] 74 | } 75 | ] 76 | } 77 | 78 | self.printer.register_event_handler('klippy:ready', self._handle_ready) 79 | self.printer.register_event_handler('klippy:disconnect', self._handle_disconnect) 80 | 81 | self.gcode.register_command( 82 | 'ACE_START_DRYING', self.cmd_ACE_START_DRYING, 83 | desc=self.cmd_ACE_START_DRYING_help) 84 | self.gcode.register_command( 85 | 'ACE_STOP_DRYING', self.cmd_ACE_STOP_DRYING, 86 | desc=self.cmd_ACE_STOP_DRYING_help) 87 | self.gcode.register_command( 88 | 'ACE_ENABLE_FEED_ASSIST', self.cmd_ACE_ENABLE_FEED_ASSIST, 89 | desc=self.cmd_ACE_ENABLE_FEED_ASSIST_help) 90 | self.gcode.register_command( 91 | 'ACE_DISABLE_FEED_ASSIST', self.cmd_ACE_DISABLE_FEED_ASSIST, 92 | desc=self.cmd_ACE_DISABLE_FEED_ASSIST_help) 93 | self.gcode.register_command( 94 | 'ACE_PARK_TO_TOOLHEAD', self.cmd_ACE_PARK_TO_TOOLHEAD, 95 | desc=self.cmd_ACE_PARK_TO_TOOLHEAD_help) 96 | self.gcode.register_command( 97 | 'ACE_FEED', self.cmd_ACE_FEED, 98 | desc=self.cmd_ACE_FEED_help) 99 | self.gcode.register_command( 100 | 'ACE_RETRACT', self.cmd_ACE_RETRACT, 101 | desc=self.cmd_ACE_RETRACT_help) 102 | self.gcode.register_command( 103 | 'ACE_CHANGE_TOOL', self.cmd_ACE_CHANGE_TOOL, 104 | desc=self.cmd_ACE_CHANGE_TOOL_help) 105 | self.gcode.register_command( 106 | 'ACE_DEBUG', self.cmd_ACE_DEBUG, 107 | desc=self.cmd_ACE_DEBUG_help) 108 | 109 | 110 | def _calc_crc(self, buffer): 111 | _crc = 0xffff 112 | for byte in buffer: 113 | data = byte 114 | data ^= _crc & 0xff 115 | data ^= (data & 0x0f) << 4 116 | _crc = ((data << 8) | (_crc >> 8)) ^ (data >> 4) ^ (data << 3) 117 | return _crc 118 | 119 | 120 | def _send_request(self, request): 121 | if not 'id' in request: 122 | request['id'] = self._request_id 123 | self._request_id += 1 124 | if self._request_id >= 300000: 125 | self._request_id = 0 126 | 127 | payload = json.dumps(request) 128 | payload = bytes(payload, 'utf-8') 129 | 130 | data = bytes([0xFF, 0xAA]) 131 | data += struct.pack('@H', len(payload)) 132 | data += payload 133 | data += struct.pack('@H', self._calc_crc(payload)) 134 | data += bytes([0xFE]) 135 | 136 | self._serial.write(data) 137 | 138 | 139 | def _main_eval(self, eventtime): 140 | while not self._main_queue.empty(): 141 | task = self._main_queue.get_nowait() 142 | if task is not None: 143 | task() 144 | 145 | return eventtime + 0.25 146 | 147 | 148 | def _reader(self): 149 | while self._connected: 150 | try: 151 | ret = self._serial.read_until(expected=bytes([0xFE]), size=4096) 152 | 153 | if not (ret[0] == 0xFF and ret[1] == 0xAA and ret[len(ret) - 1] == 0xFE): 154 | logging.warning('ACE: Invalid data recieved: ' + str(ret)) 155 | continue 156 | 157 | rlen = struct.unpack('@H', ret[2:4])[0] 158 | crc_data = None 159 | crc_offset = 0 160 | if rlen > len(ret) - 7 or rlen <= 0: 161 | if rlen == len(ret) - 6: 162 | crc_data = self._serial.read_until(expected=bytes([0xFE]), size=1) 163 | crc_data = bytes([ret[len(ret) - 2], crc_data[0]]) 164 | ret = ret[0:len(ret) - 2] + bytes([ret[len(ret) - 1]]) 165 | crc_offset = 2 166 | elif rlen == len(ret) - 5: 167 | crc_data = self._serial.read_until(expected=bytes([0xFE]), size=2) 168 | crc_data = bytes([crc_data[1], crc_data[0]]) 169 | crc_offset = 2 170 | else: 171 | logging.info('ACE: Invalid data length recieved: ' + str(rlen) + ' | ' + str(len(ret)) + ', ' + str(ret)) 172 | continue 173 | 174 | if crc_data is None: 175 | crc_data = ret[len(ret) - 3:len(ret) - 1] 176 | 177 | rpayload = ret[4:(len(ret) - 3 + crc_offset)] 178 | crc = struct.pack('@H', self._calc_crc(rpayload)) 179 | if crc[0] != crc_data[0] or crc[1] != crc_data[1]: 180 | logging.info('ACE: Invalid data CRC recieved: ' + str(ret) + ', should be: ' + str(crc)) 181 | continue 182 | 183 | ret = json.loads(rpayload.decode('utf-8')) 184 | id = ret['id'] 185 | if id in self._callback_map: 186 | callback = self._callback_map.pop(id) 187 | callback(self = self, response = ret) 188 | except serial.serialutil.SerialException: 189 | self._printer.invoke_shutdown("Lost communication with ACE '%s'" % (self._name,)) 190 | return 191 | except Exception as e: 192 | logging.info('ACE: Read error ' + traceback.format_exc(e)) 193 | 194 | 195 | def _writer(self): 196 | while self._connected: 197 | try: 198 | while not self._queue.empty(): 199 | task = self._queue.get() 200 | if task is not None: 201 | id = self._request_id 202 | self._request_id += 1 203 | self._callback_map[id] = task[1] 204 | task[0]['id'] = id 205 | 206 | self._send_request(task[0]) 207 | 208 | def callback(self, response): 209 | if response is not None: 210 | self._info = response['result'] 211 | # logging.info('ACE: Update status ' + str(self._request_id)) 212 | 213 | if self._park_in_progress and self._info['status'] == 'ready': 214 | new_assist_count = self._info['feed_assist_count'] 215 | if new_assist_count > self._last_assist_count: 216 | self._last_assist_count = new_assist_count 217 | self.dwell(0.7, True) # 0.68 + small room 0.02 for response 218 | self._assist_hit_count = 0 219 | elif self._assist_hit_count < self.park_hit_count: 220 | self._assist_hit_count += 1 221 | self.dwell(0.7, True) 222 | else: 223 | self._assist_hit_count = 0 224 | self._park_in_progress = False 225 | logging.info('ACE: Parked to toolhead with assist count: ' + str(self._last_assist_count)) 226 | 227 | if self._park_is_toolchange: 228 | self._park_is_toolchange = False 229 | def main_callback(): 230 | self.gcode.run_script_from_command('_ACE_POST_TOOLCHANGE FROM=' + str(self._park_previous_tool) + ' TO=' + str(self._park_index)) 231 | self._main_queue.put(main_callback) 232 | if self.disable_assist_after_toolchange: 233 | self._send_request({"method": "stop_feed_assist", "params": {"index": self._park_index}}) 234 | else: 235 | self._send_request({"method": "stop_feed_assist", "params": {"index": self._park_index}}) 236 | 237 | id = self._request_id 238 | self._request_id += 1 239 | self._callback_map[id] = callback 240 | 241 | self._send_request({"id": id, "method": "get_status"}) 242 | if self._park_in_progress: 243 | time.sleep(0.68) 244 | else: 245 | time.sleep(0.25) 246 | except serial.serialutil.SerialException: 247 | self._printer.invoke_shutdown("Lost communication with ACE '%s'" % (self._name,)) 248 | return 249 | except Exception as e: 250 | logging.info('ACE: Write error ' + str(e)) 251 | 252 | 253 | def _handle_ready(self): 254 | logging.info('ACE: Connecting to ' + self.serial_name) 255 | 256 | # We can catch timing where ACE reboots itself when no data is available from host. We're avoiding it with this hack 257 | self._connected = False 258 | for i in range(0, 10): 259 | try: 260 | self._serial = serial.Serial( 261 | port = self.serial_name, 262 | baudrate = self.baud) 263 | 264 | if self._serial.isOpen(): 265 | self._connected = True 266 | break 267 | except serial.serialutil.SerialException: 268 | time.sleep(0.5) 269 | continue 270 | 271 | if not self._connected: 272 | raise ValueError('ACE: Failed to connect to ' + self.serial_name) 273 | 274 | logging.info('ACE: Connected to ' + self.serial_name) 275 | 276 | self._queue = queue.Queue() 277 | self._main_queue = queue.Queue() 278 | 279 | self._writer_thread = threading.Thread(target=self._writer) 280 | self._writer_thread.setDaemon(True) 281 | self._writer_thread.start() 282 | 283 | self._reader_thread = threading.Thread(target=self._reader) 284 | self._reader_thread.setDaemon(True) 285 | self._reader_thread.start() 286 | 287 | self.main_timer = self.reactor.register_timer(self._main_eval, self.reactor.NOW) 288 | 289 | def info_callback(self, response): 290 | res = response['result'] 291 | self.gcode.respond_info('Connected ' + res['model'] + ' ' + res['firmware']) 292 | self.send_request(request = {"method": "get_info"}, callback = info_callback) 293 | 294 | 295 | def _handle_disconnect(self): 296 | logging.info('ACE: Closing connection to ' + self.serial_name) 297 | self._serial.close() 298 | self._connected = False 299 | self._reader_thread.join() 300 | self._writer_thread.join() 301 | self.reactor.unregister_timer(self.main_timer) 302 | 303 | self._queue = None 304 | self._main_queue = None 305 | 306 | 307 | def send_request(self, request, callback): 308 | self._queue.put([request, callback]) 309 | 310 | 311 | def dwell(self, delay = 1., on_main = False): 312 | toolhead = self.printer.lookup_object('toolhead') 313 | def main_callback(): 314 | toolhead.dwell(delay) 315 | 316 | if on_main: 317 | self._main_queue.put(main_callback) 318 | else: 319 | main_callback() 320 | 321 | 322 | cmd_ACE_START_DRYING_help = 'Starts ACE Pro dryer' 323 | def cmd_ACE_START_DRYING(self, gcmd): 324 | temperature = gcmd.get_int('TEMPERATURE') 325 | duration = gcmd.get_int('DURATION', 240) 326 | 327 | if duration <= 0: 328 | raise gcmd.error('Wrong duration') 329 | if temperature <= 0 or temperature > self.max_dryer_temperature: 330 | raise gcmd.error('Wrong temperature') 331 | 332 | def callback(self, response): 333 | if 'code' in response and response['code'] != 0: 334 | raise gcmd.error("ACE Error: " + response['msg']) 335 | 336 | self.gcode.respond_info('Started ACE drying') 337 | 338 | self.send_request(request = {"method": "drying", "params": {"temp":temperature, "fan_speed": 7000, "duration": duration}}, callback = callback) 339 | 340 | 341 | cmd_ACE_STOP_DRYING_help = 'Stops ACE Pro dryer' 342 | def cmd_ACE_STOP_DRYING(self, gcmd): 343 | def callback(self, response): 344 | if 'code' in response and response['code'] != 0: 345 | raise gcmd.error("ACE Error: " + response['msg']) 346 | 347 | self.gcode.respond_info('Stopped ACE drying') 348 | 349 | self.send_request(request = {"method":"drying_stop"}, callback = callback) 350 | 351 | 352 | cmd_ACE_ENABLE_FEED_ASSIST_help = 'Enables ACE feed assist' 353 | def cmd_ACE_ENABLE_FEED_ASSIST(self, gcmd): 354 | index = gcmd.get_int('INDEX') 355 | 356 | if index < 0 or index >= 4: 357 | raise gcmd.error('Wrong index') 358 | 359 | def callback(self, response): 360 | if 'code' in response and response['code'] != 0: 361 | raise gcmd.error("ACE Error: " + response['msg']) 362 | 363 | self._feed_assist_index = index 364 | self.gcode.respond_info('Enabled ACE feed assist') 365 | 366 | self.send_request(request = {"method": "start_feed_assist", "params": {"index": index}}, callback = callback) 367 | self.dwell(delay = 0.3) 368 | 369 | 370 | cmd_ACE_DISABLE_FEED_ASSIST_help = 'Disables ACE feed assist' 371 | def cmd_ACE_DISABLE_FEED_ASSIST(self, gcmd): 372 | if self._feed_assist_index != -1: 373 | index = gcmd.get_int('INDEX', self._feed_assist_index) 374 | else: 375 | index = gcmd.get_int('INDEX') 376 | 377 | if index < 0 or index >= 4: 378 | raise gcmd.error('Wrong index') 379 | 380 | def callback(self, response): 381 | if 'code' in response and response['code'] != 0: 382 | raise gcmd.error("ACE Error: " + response['msg']) 383 | 384 | self._feed_assist_index = -1 385 | self.gcode.respond_info('Disabled ACE feed assist') 386 | 387 | self.send_request(request = {"method": "stop_feed_assist", "params": {"index": index}}, callback = callback) 388 | self.dwell(0.3) 389 | 390 | 391 | def _park_to_toolhead(self, index): 392 | def callback(self, response): 393 | if 'code' in response and response['code'] != 0: 394 | raise ValueError("ACE Error: " + response['msg']) 395 | 396 | self._assist_hit_count = 0 397 | self._last_assist_count = 0 398 | self._park_in_progress = True 399 | self._park_index = index 400 | 401 | self.send_request(request = {"method": "start_feed_assist", "params": {"index": index}}, callback = callback) 402 | self.dwell(delay = 0.3) 403 | 404 | 405 | cmd_ACE_PARK_TO_TOOLHEAD_help = 'Parks filament from ACE to the toolhead' 406 | def cmd_ACE_PARK_TO_TOOLHEAD(self, gcmd): 407 | index = gcmd.get_int('INDEX') 408 | 409 | if self._park_in_progress: 410 | raise gcmd.error('Already parking to the toolhead') 411 | 412 | if index < 0 or index >= 4: 413 | raise gcmd.error('Wrong index') 414 | 415 | status = self._info['slots'][index]['status'] 416 | if status != 'ready': 417 | self.gcode.run_script_from_command('_ACE_ON_EMPTY_ERROR INDEX=' + str(index)) 418 | return 419 | 420 | self._park_to_toolhead(index) 421 | 422 | 423 | cmd_ACE_FEED_help = 'Feeds filament from ACE' 424 | def cmd_ACE_FEED(self, gcmd): 425 | index = gcmd.get_int('INDEX') 426 | length = gcmd.get_int('LENGTH') 427 | speed = gcmd.get_int('SPEED', self.feed_speed) 428 | 429 | if index < 0 or index >= 4: 430 | raise gcmd.error('Wrong index') 431 | if length <= 0: 432 | raise gcmd.error('Wrong length') 433 | if speed <= 0: 434 | raise gcmd.error('Wrong speed') 435 | 436 | def callback(self, response): 437 | if 'code' in response and response['code'] != 0: 438 | raise gcmd.error("ACE Error: " + response['msg']) 439 | 440 | self.send_request(request = {"method": "feed_filament", "params": {"index": index, "length": length, "speed": speed}}, callback = callback) 441 | self.dwell(delay = (length / speed) + 0.1) 442 | 443 | 444 | cmd_ACE_RETRACT_help = 'Retracts filament back to ACE' 445 | def cmd_ACE_RETRACT(self, gcmd): 446 | index = gcmd.get_int('INDEX') 447 | length = gcmd.get_int('LENGTH') 448 | speed = gcmd.get_int('SPEED', self.retract_speed) 449 | 450 | if index < 0 or index >= 4: 451 | raise gcmd.error('Wrong index') 452 | if length <= 0: 453 | raise gcmd.error('Wrong length') 454 | if speed <= 0: 455 | raise gcmd.error('Wrong speed') 456 | 457 | def callback(self, response): 458 | if 'code' in response and response['code'] != 0: 459 | raise gcmd.error("ACE Error: " + response['msg']) 460 | 461 | self.send_request(request = {"method": "unwind_filament", "params": {"index": index, "length": length, "speed": speed}}, callback = callback) 462 | self.dwell(delay = (length / speed) + 0.1) 463 | 464 | 465 | cmd_ACE_CHANGE_TOOL_help = 'Changes tool' 466 | def cmd_ACE_CHANGE_TOOL(self, gcmd): 467 | tool = gcmd.get_int('TOOL') 468 | 469 | if tool < -1 or tool >= 4: 470 | raise gcmd.error('Wrong tool') 471 | 472 | was = self.variables.get('ace_current_index', -1) 473 | if was == tool: 474 | logging.info('ACE: Not changing tool, current index already ' + str(tool)) 475 | return 476 | 477 | if tool != -1: 478 | status = self._info['slots'][tool]['status'] 479 | if status != 'ready': 480 | self.gcode.run_script_from_command('_ACE_ON_EMPTY_ERROR INDEX=' + str(tool)) 481 | return 482 | 483 | self.gcode.run_script_from_command('_ACE_PRE_TOOLCHANGE FROM=' + str(was) + ' TO=' + str(tool)) 484 | self._park_is_toolchange = True 485 | self._park_previous_tool = was 486 | self.variables['ace_current_index'] = tool 487 | # Force save to disk 488 | self.gcode.run_script_from_command('SAVE_VARIABLE VARIABLE=ace_current_index VALUE=' + str(tool)) 489 | 490 | def callback(self, response): 491 | if 'code' in response and response['code'] != 0: 492 | raise gcmd.error("ACE Error: " + response['msg']) 493 | 494 | logging.info('ACE: Toolchange ' + str(was) + ' => ' + str(tool)) 495 | if was != -1: 496 | self.send_request(request = {"method": "unwind_filament", "params": {"index": was, "length": self.toolchange_retract_length, "speed": self.retract_speed}}, callback = callback) 497 | self.dwell(delay = (self.toolchange_retract_length / self.retract_speed) + 0.1) 498 | 499 | while self._info['status'] != 'ready': 500 | self.dwell(delay = 1.0) 501 | 502 | self.dwell(delay = 0.25) 503 | 504 | if tool != -1: 505 | self.gcode.run_script_from_command('ACE_PARK_TO_TOOLHEAD INDEX=' + str(tool)) 506 | else: 507 | self.gcode.run_script_from_command('_ACE_POST_TOOLCHANGE FROM=' + str(was) + ' TO=' + str(tool)) 508 | else: 509 | self._park_to_toolhead(tool) 510 | 511 | 512 | cmd_ACE_DEBUG_help = 'ACE Debug' 513 | def cmd_ACE_DEBUG(self, gcmd): 514 | method = gcmd.get('METHOD') 515 | params = gcmd.get('PARAMS', '{}') 516 | 517 | try: 518 | def callback(self, response): 519 | self.gcode.respond_info(str(response)) 520 | 521 | self.send_request(request = {"method": method, "params": json.loads(params)}, callback = callback) 522 | except Exception as e: 523 | self.gcode.respond_info('Error: ' + str(e)) 524 | 525 | 526 | def load_config(config): 527 | return DuckAce(config) 528 | -------------------------------------------------------------------------------- /LICENSE.md: -------------------------------------------------------------------------------- 1 | 2 | GNU GENERAL PUBLIC LICENSE 3 | Version 3, 29 June 2007 4 | 5 | Copyright (C) 2007 Free Software Foundation, Inc. 6 | Everyone is permitted to copy and distribute verbatim copies 7 | of this license document, but changing it is not allowed. 8 | 9 | Preamble 10 | 11 | The GNU General Public License is a free, copyleft license for 12 | software and other kinds of works. 13 | 14 | The licenses for most software and other practical works are designed 15 | to take away your freedom to share and change the works. By contrast, 16 | the GNU General Public License is intended to guarantee your freedom to 17 | share and change all versions of a program--to make sure it remains free 18 | software for all its users. We, the Free Software Foundation, use the 19 | GNU General Public License for most of our software; it applies also to 20 | any other work released this way by its authors. You can apply it to 21 | your programs, too. 22 | 23 | When we speak of free software, we are referring to freedom, not 24 | price. Our General Public Licenses are designed to make sure that you 25 | have the freedom to distribute copies of free software (and charge for 26 | them if you wish), that you receive source code or can get it if you 27 | want it, that you can change the software or use pieces of it in new 28 | free programs, and that you know you can do these things. 29 | 30 | To protect your rights, we need to prevent others from denying you 31 | these rights or asking you to surrender the rights. Therefore, you have 32 | certain responsibilities if you distribute copies of the software, or if 33 | you modify it: responsibilities to respect the freedom of others. 34 | 35 | For example, if you distribute copies of such a program, whether 36 | gratis or for a fee, you must pass on to the recipients the same 37 | freedoms that you received. You must make sure that they, too, receive 38 | or can get the source code. And you must show them these terms so they 39 | know their rights. 40 | 41 | Developers that use the GNU GPL protect your rights with two steps: 42 | (1) assert copyright on the software, and (2) offer you this License 43 | giving you legal permission to copy, distribute and/or modify it. 44 | 45 | For the developers' and authors' protection, the GPL clearly explains 46 | that there is no warranty for this free software. For both users' and 47 | authors' sake, the GPL requires that modified versions be marked as 48 | changed, so that their problems will not be attributed erroneously to 49 | authors of previous versions. 50 | 51 | Some devices are designed to deny users access to install or run 52 | modified versions of the software inside them, although the manufacturer 53 | can do so. This is fundamentally incompatible with the aim of 54 | protecting users' freedom to change the software. The systematic 55 | pattern of such abuse occurs in the area of products for individuals to 56 | use, which is precisely where it is most unacceptable. Therefore, we 57 | have designed this version of the GPL to prohibit the practice for those 58 | products. If such problems arise substantially in other domains, we 59 | stand ready to extend this provision to those domains in future versions 60 | of the GPL, as needed to protect the freedom of users. 61 | 62 | Finally, every program is threatened constantly by software patents. 63 | States should not allow patents to restrict development and use of 64 | software on general-purpose computers, but in those that do, we wish to 65 | avoid the special danger that patents applied to a free program could 66 | make it effectively proprietary. To prevent this, the GPL assures that 67 | patents cannot be used to render the program non-free. 68 | 69 | The precise terms and conditions for copying, distribution and 70 | modification follow. 71 | 72 | TERMS AND CONDITIONS 73 | 74 | 0. Definitions. 75 | 76 | "This License" refers to version 3 of the GNU General Public License. 77 | 78 | "Copyright" also means copyright-like laws that apply to other kinds of 79 | works, such as semiconductor masks. 80 | 81 | "The Program" refers to any copyrightable work licensed under this 82 | License. Each licensee is addressed as "you". "Licensees" and 83 | "recipients" may be individuals or organizations. 84 | 85 | To "modify" a work means to copy from or adapt all or part of the work 86 | in a fashion requiring copyright permission, other than the making of an 87 | exact copy. The resulting work is called a "modified version" of the 88 | earlier work or a work "based on" the earlier work. 89 | 90 | A "covered work" means either the unmodified Program or a work based 91 | on the Program. 92 | 93 | To "propagate" a work means to do anything with it that, without 94 | permission, would make you directly or secondarily liable for 95 | infringement under applicable copyright law, except executing it on a 96 | computer or modifying a private copy. Propagation includes copying, 97 | distribution (with or without modification), making available to the 98 | public, and in some countries other activities as well. 99 | 100 | To "convey" a work means any kind of propagation that enables other 101 | parties to make or receive copies. Mere interaction with a user through 102 | a computer network, with no transfer of a copy, is not conveying. 103 | 104 | An interactive user interface displays "Appropriate Legal Notices" 105 | to the extent that it includes a convenient and prominently visible 106 | feature that (1) displays an appropriate copyright notice, and (2) 107 | tells the user that there is no warranty for the work (except to the 108 | extent that warranties are provided), that licensees may convey the 109 | work under this License, and how to view a copy of this License. If 110 | the interface presents a list of user commands or options, such as a 111 | menu, a prominent item in the list meets this criterion. 112 | 113 | 1. Source Code. 114 | 115 | The "source code" for a work means the preferred form of the work 116 | for making modifications to it. "Object code" means any non-source 117 | form of a work. 118 | 119 | A "Standard Interface" means an interface that either is an official 120 | standard defined by a recognized standards body, or, in the case of 121 | interfaces specified for a particular programming language, one that 122 | is widely used among developers working in that language. 123 | 124 | The "System Libraries" of an executable work include anything, other 125 | than the work as a whole, that (a) is included in the normal form of 126 | packaging a Major Component, but which is not part of that Major 127 | Component, and (b) serves only to enable use of the work with that 128 | Major Component, or to implement a Standard Interface for which an 129 | implementation is available to the public in source code form. A 130 | "Major Component", in this context, means a major essential component 131 | (kernel, window system, and so on) of the specific operating system 132 | (if any) on which the executable work runs, or a compiler used to 133 | produce the work, or an object code interpreter used to run it. 134 | 135 | The "Corresponding Source" for a work in object code form means all 136 | the source code needed to generate, install, and (for an executable 137 | work) run the object code and to modify the work, including scripts to 138 | control those activities. However, it does not include the work's 139 | System Libraries, or general-purpose tools or generally available free 140 | programs which are used unmodified in performing those activities but 141 | which are not part of the work. For example, Corresponding Source 142 | includes interface definition files associated with source files for 143 | the work, and the source code for shared libraries and dynamically 144 | linked subprograms that the work is specifically designed to require, 145 | such as by intimate data communication or control flow between those 146 | subprograms and other parts of the work. 147 | 148 | The Corresponding Source need not include anything that users 149 | can regenerate automatically from other parts of the Corresponding 150 | Source. 151 | 152 | The Corresponding Source for a work in source code form is that 153 | same work. 154 | 155 | 2. Basic Permissions. 156 | 157 | All rights granted under this License are granted for the term of 158 | copyright on the Program, and are irrevocable provided the stated 159 | conditions are met. This License explicitly affirms your unlimited 160 | permission to run the unmodified Program. The output from running a 161 | covered work is covered by this License only if the output, given its 162 | content, constitutes a covered work. This License acknowledges your 163 | rights of fair use or other equivalent, as provided by copyright law. 164 | 165 | You may make, run and propagate covered works that you do not 166 | convey, without conditions so long as your license otherwise remains 167 | in force. You may convey covered works to others for the sole purpose 168 | of having them make modifications exclusively for you, or provide you 169 | with facilities for running those works, provided that you comply with 170 | the terms of this License in conveying all material for which you do 171 | not control copyright. Those thus making or running the covered works 172 | for you must do so exclusively on your behalf, under your direction 173 | and control, on terms that prohibit them from making any copies of 174 | your copyrighted material outside their relationship with you. 175 | 176 | Conveying under any other circumstances is permitted solely under 177 | the conditions stated below. Sublicensing is not allowed; section 10 178 | makes it unnecessary. 179 | 180 | 3. Protecting Users' Legal Rights From Anti-Circumvention Law. 181 | 182 | No covered work shall be deemed part of an effective technological 183 | measure under any applicable law fulfilling obligations under article 184 | 11 of the WIPO copyright treaty adopted on 20 December 1996, or 185 | similar laws prohibiting or restricting circumvention of such 186 | measures. 187 | 188 | When you convey a covered work, you waive any legal power to forbid 189 | circumvention of technological measures to the extent such circumvention 190 | is effected by exercising rights under this License with respect to 191 | the covered work, and you disclaim any intention to limit operation or 192 | modification of the work as a means of enforcing, against the work's 193 | users, your or third parties' legal rights to forbid circumvention of 194 | technological measures. 195 | 196 | 4. Conveying Verbatim Copies. 197 | 198 | You may convey verbatim copies of the Program's source code as you 199 | receive it, in any medium, provided that you conspicuously and 200 | appropriately publish on each copy an appropriate copyright notice; 201 | keep intact all notices stating that this License and any 202 | non-permissive terms added in accord with section 7 apply to the code; 203 | keep intact all notices of the absence of any warranty; and give all 204 | recipients a copy of this License along with the Program. 205 | 206 | You may charge any price or no price for each copy that you convey, 207 | and you may offer support or warranty protection for a fee. 208 | 209 | 5. Conveying Modified Source Versions. 210 | 211 | You may convey a work based on the Program, or the modifications to 212 | produce it from the Program, in the form of source code under the 213 | terms of section 4, provided that you also meet all of these conditions: 214 | 215 | a) The work must carry prominent notices stating that you modified 216 | it, and giving a relevant date. 217 | 218 | b) The work must carry prominent notices stating that it is 219 | released under this License and any conditions added under section 220 | 7. This requirement modifies the requirement in section 4 to 221 | "keep intact all notices". 222 | 223 | c) You must license the entire work, as a whole, under this 224 | License to anyone who comes into possession of a copy. This 225 | License will therefore apply, along with any applicable section 7 226 | additional terms, to the whole of the work, and all its parts, 227 | regardless of how they are packaged. This License gives no 228 | permission to license the work in any other way, but it does not 229 | invalidate such permission if you have separately received it. 230 | 231 | d) If the work has interactive user interfaces, each must display 232 | Appropriate Legal Notices; however, if the Program has interactive 233 | interfaces that do not display Appropriate Legal Notices, your 234 | work need not make them do so. 235 | 236 | A compilation of a covered work with other separate and independent 237 | works, which are not by their nature extensions of the covered work, 238 | and which are not combined with it such as to form a larger program, 239 | in or on a volume of a storage or distribution medium, is called an 240 | "aggregate" if the compilation and its resulting copyright are not 241 | used to limit the access or legal rights of the compilation's users 242 | beyond what the individual works permit. Inclusion of a covered work 243 | in an aggregate does not cause this License to apply to the other 244 | parts of the aggregate. 245 | 246 | 6. Conveying Non-Source Forms. 247 | 248 | You may convey a covered work in object code form under the terms 249 | of sections 4 and 5, provided that you also convey the 250 | machine-readable Corresponding Source under the terms of this License, 251 | in one of these ways: 252 | 253 | a) Convey the object code in, or embodied in, a physical product 254 | (including a physical distribution medium), accompanied by the 255 | Corresponding Source fixed on a durable physical medium 256 | customarily used for software interchange. 257 | 258 | b) Convey the object code in, or embodied in, a physical product 259 | (including a physical distribution medium), accompanied by a 260 | written offer, valid for at least three years and valid for as 261 | long as you offer spare parts or customer support for that product 262 | model, to give anyone who possesses the object code either (1) a 263 | copy of the Corresponding Source for all the software in the 264 | product that is covered by this License, on a durable physical 265 | medium customarily used for software interchange, for a price no 266 | more than your reasonable cost of physically performing this 267 | conveying of source, or (2) access to copy the 268 | Corresponding Source from a network server at no charge. 269 | 270 | c) Convey individual copies of the object code with a copy of the 271 | written offer to provide the Corresponding Source. This 272 | alternative is allowed only occasionally and noncommercially, and 273 | only if you received the object code with such an offer, in accord 274 | with subsection 6b. 275 | 276 | d) Convey the object code by offering access from a designated 277 | place (gratis or for a charge), and offer equivalent access to the 278 | Corresponding Source in the same way through the same place at no 279 | further charge. You need not require recipients to copy the 280 | Corresponding Source along with the object code. If the place to 281 | copy the object code is a network server, the Corresponding Source 282 | may be on a different server (operated by you or a third party) 283 | that supports equivalent copying facilities, provided you maintain 284 | clear directions next to the object code saying where to find the 285 | Corresponding Source. Regardless of what server hosts the 286 | Corresponding Source, you remain obligated to ensure that it is 287 | available for as long as needed to satisfy these requirements. 288 | 289 | e) Convey the object code using peer-to-peer transmission, provided 290 | you inform other peers where the object code and Corresponding 291 | Source of the work are being offered to the general public at no 292 | charge under subsection 6d. 293 | 294 | A separable portion of the object code, whose source code is excluded 295 | from the Corresponding Source as a System Library, need not be 296 | included in conveying the object code work. 297 | 298 | A "User Product" is either (1) a "consumer product", which means any 299 | tangible personal property which is normally used for personal, family, 300 | or household purposes, or (2) anything designed or sold for incorporation 301 | into a dwelling. In determining whether a product is a consumer product, 302 | doubtful cases shall be resolved in favor of coverage. For a particular 303 | product received by a particular user, "normally used" refers to a 304 | typical or common use of that class of product, regardless of the status 305 | of the particular user or of the way in which the particular user 306 | actually uses, or expects or is expected to use, the product. A product 307 | is a consumer product regardless of whether the product has substantial 308 | commercial, industrial or non-consumer uses, unless such uses represent 309 | the only significant mode of use of the product. 310 | 311 | "Installation Information" for a User Product means any methods, 312 | procedures, authorization keys, or other information required to install 313 | and execute modified versions of a covered work in that User Product from 314 | a modified version of its Corresponding Source. The information must 315 | suffice to ensure that the continued functioning of the modified object 316 | code is in no case prevented or interfered with solely because 317 | modification has been made. 318 | 319 | If you convey an object code work under this section in, or with, or 320 | specifically for use in, a User Product, and the conveying occurs as 321 | part of a transaction in which the right of possession and use of the 322 | User Product is transferred to the recipient in perpetuity or for a 323 | fixed term (regardless of how the transaction is characterized), the 324 | Corresponding Source conveyed under this section must be accompanied 325 | by the Installation Information. But this requirement does not apply 326 | if neither you nor any third party retains the ability to install 327 | modified object code on the User Product (for example, the work has 328 | been installed in ROM). 329 | 330 | The requirement to provide Installation Information does not include a 331 | requirement to continue to provide support service, warranty, or updates 332 | for a work that has been modified or installed by the recipient, or for 333 | the User Product in which it has been modified or installed. Access to a 334 | network may be denied when the modification itself materially and 335 | adversely affects the operation of the network or violates the rules and 336 | protocols for communication across the network. 337 | 338 | Corresponding Source conveyed, and Installation Information provided, 339 | in accord with this section must be in a format that is publicly 340 | documented (and with an implementation available to the public in 341 | source code form), and must require no special password or key for 342 | unpacking, reading or copying. 343 | 344 | 7. Additional Terms. 345 | 346 | "Additional permissions" are terms that supplement the terms of this 347 | License by making exceptions from one or more of its conditions. 348 | Additional permissions that are applicable to the entire Program shall 349 | be treated as though they were included in this License, to the extent 350 | that they are valid under applicable law. If additional permissions 351 | apply only to part of the Program, that part may be used separately 352 | under those permissions, but the entire Program remains governed by 353 | this License without regard to the additional permissions. 354 | 355 | When you convey a copy of a covered work, you may at your option 356 | remove any additional permissions from that copy, or from any part of 357 | it. (Additional permissions may be written to require their own 358 | removal in certain cases when you modify the work.) You may place 359 | additional permissions on material, added by you to a covered work, 360 | for which you have or can give appropriate copyright permission. 361 | 362 | Notwithstanding any other provision of this License, for material you 363 | add to a covered work, you may (if authorized by the copyright holders of 364 | that material) supplement the terms of this License with terms: 365 | 366 | a) Disclaiming warranty or limiting liability differently from the 367 | terms of sections 15 and 16 of this License; or 368 | 369 | b) Requiring preservation of specified reasonable legal notices or 370 | author attributions in that material or in the Appropriate Legal 371 | Notices displayed by works containing it; or 372 | 373 | c) Prohibiting misrepresentation of the origin of that material, or 374 | requiring that modified versions of such material be marked in 375 | reasonable ways as different from the original version; or 376 | 377 | d) Limiting the use for publicity purposes of names of licensors or 378 | authors of the material; or 379 | 380 | e) Declining to grant rights under trademark law for use of some 381 | trade names, trademarks, or service marks; or 382 | 383 | f) Requiring indemnification of licensors and authors of that 384 | material by anyone who conveys the material (or modified versions of 385 | it) with contractual assumptions of liability to the recipient, for 386 | any liability that these contractual assumptions directly impose on 387 | those licensors and authors. 388 | 389 | All other non-permissive additional terms are considered "further 390 | restrictions" within the meaning of section 10. If the Program as you 391 | received it, or any part of it, contains a notice stating that it is 392 | governed by this License along with a term that is a further 393 | restriction, you may remove that term. If a license document contains 394 | a further restriction but permits relicensing or conveying under this 395 | License, you may add to a covered work material governed by the terms 396 | of that license document, provided that the further restriction does 397 | not survive such relicensing or conveying. 398 | 399 | If you add terms to a covered work in accord with this section, you 400 | must place, in the relevant source files, a statement of the 401 | additional terms that apply to those files, or a notice indicating 402 | where to find the applicable terms. 403 | 404 | Additional terms, permissive or non-permissive, may be stated in the 405 | form of a separately written license, or stated as exceptions; 406 | the above requirements apply either way. 407 | 408 | 8. Termination. 409 | 410 | You may not propagate or modify a covered work except as expressly 411 | provided under this License. Any attempt otherwise to propagate or 412 | modify it is void, and will automatically terminate your rights under 413 | this License (including any patent licenses granted under the third 414 | paragraph of section 11). 415 | 416 | However, if you cease all violation of this License, then your 417 | license from a particular copyright holder is reinstated (a) 418 | provisionally, unless and until the copyright holder explicitly and 419 | finally terminates your license, and (b) permanently, if the copyright 420 | holder fails to notify you of the violation by some reasonable means 421 | prior to 60 days after the cessation. 422 | 423 | Moreover, your license from a particular copyright holder is 424 | reinstated permanently if the copyright holder notifies you of the 425 | violation by some reasonable means, this is the first time you have 426 | received notice of violation of this License (for any work) from that 427 | copyright holder, and you cure the violation prior to 30 days after 428 | your receipt of the notice. 429 | 430 | Termination of your rights under this section does not terminate the 431 | licenses of parties who have received copies or rights from you under 432 | this License. If your rights have been terminated and not permanently 433 | reinstated, you do not qualify to receive new licenses for the same 434 | material under section 10. 435 | 436 | 9. Acceptance Not Required for Having Copies. 437 | 438 | You are not required to accept this License in order to receive or 439 | run a copy of the Program. Ancillary propagation of a covered work 440 | occurring solely as a consequence of using peer-to-peer transmission 441 | to receive a copy likewise does not require acceptance. However, 442 | nothing other than this License grants you permission to propagate or 443 | modify any covered work. These actions infringe copyright if you do 444 | not accept this License. Therefore, by modifying or propagating a 445 | covered work, you indicate your acceptance of this License to do so. 446 | 447 | 10. Automatic Licensing of Downstream Recipients. 448 | 449 | Each time you convey a covered work, the recipient automatically 450 | receives a license from the original licensors, to run, modify and 451 | propagate that work, subject to this License. You are not responsible 452 | for enforcing compliance by third parties with this License. 453 | 454 | An "entity transaction" is a transaction transferring control of an 455 | organization, or substantially all assets of one, or subdividing an 456 | organization, or merging organizations. If propagation of a covered 457 | work results from an entity transaction, each party to that 458 | transaction who receives a copy of the work also receives whatever 459 | licenses to the work the party's predecessor in interest had or could 460 | give under the previous paragraph, plus a right to possession of the 461 | Corresponding Source of the work from the predecessor in interest, if 462 | the predecessor has it or can get it with reasonable efforts. 463 | 464 | You may not impose any further restrictions on the exercise of the 465 | rights granted or affirmed under this License. For example, you may 466 | not impose a license fee, royalty, or other charge for exercise of 467 | rights granted under this License, and you may not initiate litigation 468 | (including a cross-claim or counterclaim in a lawsuit) alleging that 469 | any patent claim is infringed by making, using, selling, offering for 470 | sale, or importing the Program or any portion of it. 471 | 472 | 11. Patents. 473 | 474 | A "contributor" is a copyright holder who authorizes use under this 475 | License of the Program or a work on which the Program is based. The 476 | work thus licensed is called the contributor's "contributor version". 477 | 478 | A contributor's "essential patent claims" are all patent claims 479 | owned or controlled by the contributor, whether already acquired or 480 | hereafter acquired, that would be infringed by some manner, permitted 481 | by this License, of making, using, or selling its contributor version, 482 | but do not include claims that would be infringed only as a 483 | consequence of further modification of the contributor version. For 484 | purposes of this definition, "control" includes the right to grant 485 | patent sublicenses in a manner consistent with the requirements of 486 | this License. 487 | 488 | Each contributor grants you a non-exclusive, worldwide, royalty-free 489 | patent license under the contributor's essential patent claims, to 490 | make, use, sell, offer for sale, import and otherwise run, modify and 491 | propagate the contents of its contributor version. 492 | 493 | In the following three paragraphs, a "patent license" is any express 494 | agreement or commitment, however denominated, not to enforce a patent 495 | (such as an express permission to practice a patent or covenant not to 496 | sue for patent infringement). To "grant" such a patent license to a 497 | party means to make such an agreement or commitment not to enforce a 498 | patent against the party. 499 | 500 | If you convey a covered work, knowingly relying on a patent license, 501 | and the Corresponding Source of the work is not available for anyone 502 | to copy, free of charge and under the terms of this License, through a 503 | publicly available network server or other readily accessible means, 504 | then you must either (1) cause the Corresponding Source to be so 505 | available, or (2) arrange to deprive yourself of the benefit of the 506 | patent license for this particular work, or (3) arrange, in a manner 507 | consistent with the requirements of this License, to extend the patent 508 | license to downstream recipients. "Knowingly relying" means you have 509 | actual knowledge that, but for the patent license, your conveying the 510 | covered work in a country, or your recipient's use of the covered work 511 | in a country, would infringe one or more identifiable patents in that 512 | country that you have reason to believe are valid. 513 | 514 | If, pursuant to or in connection with a single transaction or 515 | arrangement, you convey, or propagate by procuring conveyance of, a 516 | covered work, and grant a patent license to some of the parties 517 | receiving the covered work authorizing them to use, propagate, modify 518 | or convey a specific copy of the covered work, then the patent license 519 | you grant is automatically extended to all recipients of the covered 520 | work and works based on it. 521 | 522 | A patent license is "discriminatory" if it does not include within 523 | the scope of its coverage, prohibits the exercise of, or is 524 | conditioned on the non-exercise of one or more of the rights that are 525 | specifically granted under this License. You may not convey a covered 526 | work if you are a party to an arrangement with a third party that is 527 | in the business of distributing software, under which you make payment 528 | to the third party based on the extent of your activity of conveying 529 | the work, and under which the third party grants, to any of the 530 | parties who would receive the covered work from you, a discriminatory 531 | patent license (a) in connection with copies of the covered work 532 | conveyed by you (or copies made from those copies), or (b) primarily 533 | for and in connection with specific products or compilations that 534 | contain the covered work, unless you entered into that arrangement, 535 | or that patent license was granted, prior to 28 March 2007. 536 | 537 | Nothing in this License shall be construed as excluding or limiting 538 | any implied license or other defenses to infringement that may 539 | otherwise be available to you under applicable patent law. 540 | 541 | 12. No Surrender of Others' Freedom. 542 | 543 | If conditions are imposed on you (whether by court order, agreement or 544 | otherwise) that contradict the conditions of this License, they do not 545 | excuse you from the conditions of this License. If you cannot convey a 546 | covered work so as to satisfy simultaneously your obligations under this 547 | License and any other pertinent obligations, then as a consequence you may 548 | not convey it at all. For example, if you agree to terms that obligate you 549 | to collect a royalty for further conveying from those to whom you convey 550 | the Program, the only way you could satisfy both those terms and this 551 | License would be to refrain entirely from conveying the Program. 552 | 553 | 13. Use with the GNU Affero General Public License. 554 | 555 | Notwithstanding any other provision of this License, you have 556 | permission to link or combine any covered work with a work licensed 557 | under version 3 of the GNU Affero General Public License into a single 558 | combined work, and to convey the resulting work. The terms of this 559 | License will continue to apply to the part which is the covered work, 560 | but the special requirements of the GNU Affero General Public License, 561 | section 13, concerning interaction through a network will apply to the 562 | combination as such. 563 | 564 | 14. Revised Versions of this License. 565 | 566 | The Free Software Foundation may publish revised and/or new versions of 567 | the GNU General Public License from time to time. Such new versions will 568 | be similar in spirit to the present version, but may differ in detail to 569 | address new problems or concerns. 570 | 571 | Each version is given a distinguishing version number. If the 572 | Program specifies that a certain numbered version of the GNU General 573 | Public License "or any later version" applies to it, you have the 574 | option of following the terms and conditions either of that numbered 575 | version or of any later version published by the Free Software 576 | Foundation. If the Program does not specify a version number of the 577 | GNU General Public License, you may choose any version ever published 578 | by the Free Software Foundation. 579 | 580 | If the Program specifies that a proxy can decide which future 581 | versions of the GNU General Public License can be used, that proxy's 582 | public statement of acceptance of a version permanently authorizes you 583 | to choose that version for the Program. 584 | 585 | Later license versions may give you additional or different 586 | permissions. However, no additional obligations are imposed on any 587 | author or copyright holder as a result of your choosing to follow a 588 | later version. 589 | 590 | 15. Disclaimer of Warranty. 591 | 592 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY 593 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT 594 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY 595 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, 596 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 597 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM 598 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF 599 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 600 | 601 | 16. Limitation of Liability. 602 | 603 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 604 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 605 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 606 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 607 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 608 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 609 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 610 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 611 | SUCH DAMAGES. 612 | 613 | 17. Interpretation of Sections 15 and 16. 614 | 615 | If the disclaimer of warranty and limitation of liability provided 616 | above cannot be given local legal effect according to their terms, 617 | reviewing courts shall apply local law that most closely approximates 618 | an absolute waiver of all civil liability in connection with the 619 | Program, unless a warranty or assumption of liability accompanies a 620 | copy of the Program in return for a fee. 621 | 622 | END OF TERMS AND CONDITIONS 623 | 624 | How to Apply These Terms to Your New Programs 625 | 626 | If you develop a new program, and you want it to be of the greatest 627 | possible use to the public, the best way to achieve this is to make it 628 | free software which everyone can redistribute and change under these terms. 629 | 630 | To do so, attach the following notices to the program. It is safest 631 | to attach them to the start of each source file to most effectively 632 | state the exclusion of warranty; and each file should have at least 633 | the "copyright" line and a pointer to where the full notice is found. 634 | 635 | 636 | Copyright (C) 637 | 638 | This program is free software: you can redistribute it and/or modify 639 | it under the terms of the GNU General Public License as published by 640 | the Free Software Foundation, either version 3 of the License, or 641 | (at your option) any later version. 642 | 643 | This program is distributed in the hope that it will be useful, 644 | but WITHOUT ANY WARRANTY; without even the implied warranty of 645 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 646 | GNU General Public License for more details. 647 | 648 | You should have received a copy of the GNU General Public License 649 | along with this program. If not, see . 650 | 651 | Also add information on how to contact you by electronic and paper mail. 652 | 653 | If the program does terminal interaction, make it output a short 654 | notice like this when it starts in an interactive mode: 655 | 656 | {project} Copyright (C) {year} {fullname} 657 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 658 | This is free software, and you are welcome to redistribute it 659 | under certain conditions; type `show c' for details. 660 | 661 | The hypothetical commands `show w' and `show c' should show the appropriate 662 | parts of the General Public License. Of course, your program's commands 663 | might be different; for a GUI interface, you would use an "about box". 664 | 665 | You should also get your employer (if you work as a programmer) or school, 666 | if any, to sign a "copyright disclaimer" for the program, if necessary. 667 | For more information on this, and how to apply and follow the GNU GPL, see 668 | . 669 | 670 | The GNU General Public License does not permit incorporating your program 671 | into proprietary programs. If your program is a subroutine library, you 672 | may consider it more useful to permit linking proprietary applications with 673 | the library. If this is what you want to do, use the GNU Lesser General 674 | Public License instead of this License. But first, please read 675 | . 676 | --------------------------------------------------------------------------------