aboutsummaryrefslogtreecommitdiffstats
path: root/low-can-binding/utils/openxc-utils.cpp
blob: 5ca70b88f58d371770983d39ecb99266b07319e7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
/*
 * Copyright (C) 2015, 2016 "IoT.bzh"
 * Author "Romain Forlot" <romain.forlot@iot.bzh>
 * Author "Loic Collignon" <loic.collignon@iot.bzh>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *	 http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "openxc-utils.hpp"
#include "converter.hpp"
#include "../binding/application.hpp"


///
/// @brief Build a specific VehicleMessage containing a DiagnosticResponse.
///
/// @param[in] request - Original request use to retrieve decoder and callback
/// @param[in] response - Response to the request that will be decoded if decoder set
///  and put into the DiagnosticResponse of the VehicleMessage.
/// @param[in] parsed_value - raw parsed value of the payload from CAN message
///
/// @return a vehicle message including simple message that will be convert into
/// a JSON object before being pushed to the subscribers
///
const openxc_VehicleMessage build_VehicleMessage(active_diagnostic_request_t* request, const DiagnosticResponse& response, float parsed_value)
{
	openxc_VehicleMessage message;
	::memset(&message, 0, sizeof(message));
	application_t& app = application_t::instance();

	message.has_type = true;
	message.type = openxc_VehicleMessage_Type::openxc_VehicleMessage_Type_DIAGNOSTIC;
	message.has_diagnostic_response = true;
	message.diagnostic_response.has_bus = true;
	message.diagnostic_response.bus = app.get_can_bus_manager().get_can_device_index(
																app.get_diagnostic_manager().get_bus_name());
	message.diagnostic_response.has_message_id = true;

	if(request->get_id() != OBD2_FUNCTIONAL_BROADCAST_ID)
	{
		message.diagnostic_response.message_id = response.arbitration_id
			- DIAGNOSTIC_RESPONSE_ARBITRATION_ID_OFFSET;
	}
	else
	{
		// must preserve responding arb ID for responses to functional broadcast
		// requests, as they are the actual module address and not just arb ID +
		// 8.
		message.diagnostic_response.message_id = response.arbitration_id;
	}

	message.diagnostic_response.has_mode = true;
	message.diagnostic_response.mode = response.mode;
	message.diagnostic_response.has_pid = response.has_pid;
	if(message.diagnostic_response.has_pid)
		message.diagnostic_response.pid = response.pid;
	message.diagnostic_response.has_success = true;
	message.diagnostic_response.success = response.success;
	message.diagnostic_response.has_negative_response_code = !response.success;
	message.diagnostic_response.negative_response_code =
			response.negative_response_code;

	if(response.payload_length > 0)
	{
		if(request->get_decoder() != nullptr)
		{
			message.diagnostic_response.has_value = true;
			message.diagnostic_response.value = parsed_value;
		}
		else
		{
			message.diagnostic_response.has_payload = true;
			::memcpy(message.diagnostic_response.payload.bytes, response.payload,
					response.payload_length);
			message.diagnostic_response.payload.size = response.payload_length;
		}
	}

	return message;
}
///
/// @brief Build a specific VehicleMessage containing a SimpleMessage with associated timestamp
///
/// @param[in] message - simple message to include into openxc_VehicleMessage
/// @param[in] timestamp - timestamp from ioctl when reading the socket
///
/// @return a vehicle message including simple message that will be convert into
/// a JSON object before being pushed to the subscribers
///
const openxc_VehicleMessage build_VehicleMessage(const openxc_SimpleMessage& message, uint64_t timestamp)
{
	openxc_VehicleMessage v;
	::memset(&v, 0, sizeof(v));

	v.has_type = true,
	v.type = openxc_VehicleMessage_Type::openxc_VehicleMessage_Type_SIMPLE;
	v.has_simple_message = true;
	v.simple_message =  message;
	v.has_timestamp = true;
	v.timestamp = timestamp;

	return v;
}

///
/// @brief Build a specific VehicleMessage containing a SimpleMessage.
///
/// @param[in] message - simple message to include into openxc_VehicleMessage
///
/// @return a vehicle message including simple message that will be convert into
/// a JSON object before being pushed to the subscribers
///
const openxc_VehicleMessage build_VehicleMessage(const openxc_SimpleMessage& message)
{
	openxc_VehicleMessage v;
	::memset(&v, 0, sizeof(v));

	v.has_type = true,
	v.type = openxc_VehicleMessage_Type::openxc_VehicleMessage_Type_SIMPLE;
	v.has_simple_message = true;
	v.simple_message =  message;
	v.has_timestamp = true;
	v.timestamp = system_time_us();

	return v;
}

///
/// @brief Build an empty VehicleMessage that isn't usable by at least the struct
///  is initialized for the most part and can be use to check a false return value.
///
/// @return A VehicleMessage with all boolean value to false.
///
openxc_VehicleMessage build_VehicleMessage()
{
	openxc_VehicleMessage v;

	::memset(&v, 0, sizeof(v));
	return v;
}

bool is_valid(const openxc_VehicleMessage& v)
{
	if (v.has_type == false &&
		v.has_can_message == false &&
		v.has_simple_message == false &&
		v.has_diagnostic_response == false &&
		v.has_control_command == false &&
		v.has_command_response == false &&
		v.has_timestamp == false)
			return false;
	return true;
}

///
/// @brief Build an openxc_SimpleMessage associating a name to an openxc_DynamicField
///
/// @param[in] name - const string reference name to assign to the created SimpleMessage
///  this will set has_name member to true and assign name to the name member. Maximum size for name is
///  set to 100 char.
/// @param[in] value - const reference with DynamicField to assign to SimpleMessage
///  value.
///
/// @return an openxc_SimpleMessage struct initialized with name and value provided.
///
const openxc_SimpleMessage build_SimpleMessage(const std::string& name, const openxc_DynamicField& value)
{
	openxc_SimpleMessage s;

	s.has_name = true;
	::strncpy(s.name, name.c_str(), 100);
	s.has_value = true;
	s.value = value;

	return s;
}

/// @brief Build an openxc_DynamicField with a json object
///
/// @param[in] value - const json_object pointer to assign to convert in an
///  openxc_DynamicField.
///
/// @return openxc_DynamicField initialized with a json object.
///
const openxc_DynamicField build_DynamicField(json_object* value)
{
	switch(json_object_get_type(value))
	{
		case json_type_string:
			return build_DynamicField(json_object_get_string(value));
		case json_type_double:
			return build_DynamicField(json_object_get_double(value));
		case json_type_int:
			return build_DynamicField(json_object_get_double(value));
		case json_type_boolean:
			return build_DynamicField((bool)json_object_get_boolean(value));
		default:
			openxc_DynamicField d;
			::memset(&d, 0, sizeof(openxc_DynamicField));
			return d;
	}
}

const openxc_DynamicField build_DynamicField(std::vector<uint8_t> &array)
{
	openxc_DynamicField d;
	d.has_type = true;
	d.type = openxc_DynamicField_Type_BYTES;

	d.has_string_value = false;
	d.has_numeric_value = false;
	d.has_boolean_value = false;
	d.has_bytes_value = true;


	size_t size = array.size();

	if(size > 2040)
	{
		AFB_ERROR("Error to generate array dynamic field, too large data");
		return d;
	}
	else
	{
		 d.length_array = (uint32_t) size;
	}


	for(int i=0;i<size;i++)
		d.bytes_value[i] = array[i];

	return d;
}


///
/// @brief Build an openxc_DynamicField with a string value
///
/// @param[in] value - const string reference value to assign to builded
///  openxc_DynamicField.
///
/// @return openxc_DynamicField initialized with a string value.
///
const openxc_DynamicField build_DynamicField(const char* value)
{
	openxc_DynamicField d;
	d.has_type = true;
	d.type = openxc_DynamicField_Type_STRING;

	d.has_string_value = true;
	d.has_numeric_value = false;
	d.has_boolean_value = false;
	d.has_bytes_value = false;
	::strncpy(d.string_value, value, 100);

	return d;
}

///
/// @brief Build an openxc_DynamicField with a string value
///
/// @param[in] value - const string reference value to assign to builded
///  openxc_DynamicField.
///
/// @return openxc_DynamicField initialized with a string value.
///
const openxc_DynamicField build_DynamicField(const std::string& value)
{
	openxc_DynamicField d;
	d.has_type = true;
	d.type = openxc_DynamicField_Type_STRING;

	d.has_string_value = true;
	d.has_numeric_value = false;
	d.has_boolean_value = false;
	d.has_bytes_value = false;
	::strncpy(d.string_value, value.c_str(), 100);

	return d;
}

///
/// @fn openxc_DynamicField build_DynamicField(double value);
///
/// @brief Build an openxc_DynamicField with a double value
///
/// @param[in] value - double value to assign to builded openxc_DynamicField.
///
/// @return openxc_DynamicField initialized with a double value.
///
const openxc_DynamicField build_DynamicField(double value)
{
	openxc_DynamicField d;
	d.has_type = true;
	d.type = openxc_DynamicField_Type_NUM;

	d.has_string_value = false;
	d.has_numeric_value = true;
	d.has_boolean_value = false;
	d.has_bytes_value = false;
	d.numeric_value = value;

	return d;
}

///
/// @brief Build an openxc_DynamicField with a boolean value
///
/// @param[in] value - boolean value to assign to builded openxc_DynamicField.
///
/// @return openxc_DynamicField initialized with a boolean value.
///
const openxc_DynamicField build_DynamicField(bool value)
{
	openxc_DynamicField d;
	d.has_type = true;
	d.type = openxc_DynamicField_Type_BOOL;

	d.has_string_value = false;
	d.has_numeric_value = false;
	d.has_boolean_value = true;
	d.has_bytes_value = false;
	d.boolean_value = value;


	return d;
}

int get_bool_from_DynamicField(const openxc_VehicleMessage& v_msg, bool* ret)
{
	if(v_msg.has_simple_message && v_msg.simple_message.has_value && v_msg.simple_message.value.has_boolean_value)
	{
		*ret = v_msg.simple_message.value.boolean_value;
		return 0;
	}

	return -1;
}

double get_numerical_from_DynamicField(const openxc_VehicleMessage& v_msg)
{
	return (v_msg.has_simple_message && v_msg.simple_message.has_value && v_msg.simple_message.value.has_numeric_value) ?
		v_msg.simple_message.value.numeric_value : -1.0;
}

const std::string get_string_from_DynamicField(const openxc_VehicleMessage& v_msg)
{
return (v_msg.has_simple_message && v_msg.simple_message.has_value && v_msg.simple_message.value.has_string_value) ?
		v_msg.simple_message.value.string_value : "";
}

///
/// @brief Extract the simple message value from an openxc_VehicleMessage
///  and return it. If there isn't SimpleMessage in the VehicleMessage then
///  returned value will be a SimpleMessage with all field set at false.
///  DynamicField from SimpleMessage will be boolean DynamicField set to false too.
///
/// @param[in] v_msg - const reference to openxc_VehicleMessage
///
/// @return A simpleMessage from the provided VehicleMessage.
///
const openxc_SimpleMessage get_simple_message(const openxc_VehicleMessage& v_msg)
{
	if (v_msg.has_simple_message)
		return v_msg.simple_message;

	openxc_SimpleMessage s_msg = { false, "", false, build_DynamicField(false), false, build_DynamicField(false)};
	return s_msg;
}

///
/// @brief Make a JSON object from a DynamicField
///
/// @param[in] field - openxc_DynamicField struct to convert into
///  a json object.
/// @param[out] value - pointer to the object to set up.
///
void jsonify_DynamicField(const openxc_DynamicField& field, json_object* value)
{
	if(field.has_numeric_value)
	{
		json_object_object_add(value, "value", json_object_new_double(field.numeric_value));
	}
	else if(field.has_boolean_value)
	{
		json_object_object_add(value, "value", json_object_new_boolean(field.boolean_value));
	}
	else if(field.has_string_value)
	{
		json_object_object_add(value, "value", json_object_new_string(field.string_value));
	}
	else if(field.has_bytes_value)
	{
		std::string s = converter_t::to_hex(field.bytes_value, field.length_array);
		json_object_object_add(value, "value", json_object_new_string(s.c_str()));
	}
}

///
/// @brief Make a JSON object from a SimpleMessage
///
/// @param[in] s_msg - const reference to an openxc_SimpleMessage
/// struct to convert into a json object.
/// @param[out] json - pointer with the DynamicField converted into json object
///
/// @return True if SimpleMessage has been transformed into json object
///  and false if not. In such case, a json object is returned { "error": "error msg"}
///
bool jsonify_simple(const openxc_SimpleMessage& s_msg, json_object* json)
{
	if(s_msg.has_name)
	{
		json_object_object_add(json, "name", json_object_new_string(s_msg.name));
		jsonify_DynamicField(s_msg.value, json);
		return true;
	}
	json_object_object_add(json, "error", json_object_new_string("openxc_SimpleMessage doesn't have name'"));
	return false;
}

///
/// @brief Make a JSON object from a VehicleMessage
///
/// @param[in] v_msg - const reference to an openxc_VehicleMessage
/// struct to convert into a json object.
/// @param[in] sig - signal reference to the subscription of openxc_VehicleMessage,
/// to get more informations about it
/// @param[out] json - pointer with the DynamicField converted into json object
///
/// @return True if VehicleMessage has been transformed into json object
///  and false if not. In such case, a json object is returned { "error": "error msg"}
///
bool jsonify_vehicle(const openxc_VehicleMessage& v_msg, std::shared_ptr<signal_t> sig, json_object* json)
{
	if(jsonify_simple(get_simple_message(v_msg), json))
	{
		if(sig != nullptr && sig->get_unit() != "")
			json_object_object_add(json, "unit", json_object_new_string(sig->get_unit().c_str()));

		if(v_msg.has_timestamp)
			json_object_object_add(json, "timestamp", json_object_new_int64(v_msg.timestamp));

		return true;
	}
	json_object_object_add(json, "error", json_object_new_string("openxc_SimpleMessage doesn't have name'"));
	return false;
}