GCC Code Coverage Report

Line	Branch	Exec	Source
1			/* GATE PROJECT LICENSE:
2			+----------------------------------------------------------------------------+
3			| Copyright (c) 2018-2026, Stefan Meislinger <sm@opengate.at> |
4			| All rights reserved. |
5			| |
6			| Redistribution and use in source and binary forms, with or without |
7			| modification, are permitted provided that the following conditions are met:|
8			| |
9			| 1. Redistributions of source code must retain the above copyright notice, |
10			| this list of conditions and the following disclaimer. |
11			| 2. Redistributions in binary form must reproduce the above copyright |
12			| notice, this list of conditions and the following disclaimer in the |
13			| documentation and/or other materials provided with the distribution. |
14			| |
15			| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"|
16			| AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
17			| IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
18			| ARE DISCLAIMED.IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
19			| LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
20			| CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
21			| SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
22			| INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
23			| CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
24			| ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
25			| THE POSSIBILITY OF SUCH DAMAGE. |
26			+----------------------------------------------------------------------------+
27			*/
28
29			/*
30			SENACT - SENsor & ACTor access protocol
31			=======================================
32
33			*/
34
35			#ifndef SENACT_H_INCLUDED
36			#define SENACT_H_INCLUDED
37
38			#if defined(__cplusplus)
39			extern "C" {
40			#endif
41
42			/*
43			Communication protocol:
44
45			A message based on ASCII-text fields, beginning with a defined ID-Token and
46			terminated with a LINE-FEED (ASCII code 10)
47
48			this ID-Token is the message header to define which content data fields will
49			follow.
50			A KEY is a text
51
52			message:
53			"[ID]:[KEY]=[VALUE],[KEY]=[VALUE],...\n"
54
55
56
57			*/
58
59			#define SENACT_DATA_TYPE_INT 0x01 /* integer (32 bit, big endian) */
60			#define SENACT_DATA_TYPE_FLOAT 0x02 /* floating point (32 bit, big endian) */
61			#define SENACT_DATA_TYPE_TEXT 0x03 /* 8-bit TEXT characters (surrounded by quotes, C-style escaped)*/
62
63			typedef unsigned char senact_device_id_t;
64			typedef unsigned char senact_data_type_t;
65			typedef unsigned char senact_data_category_t;
66			typedef unsigned char senact_data_unit_t;
67
68
69			typedef struct senact_device_type
70			{
71			senact_device_id_t device_id;
72			senact_data_type_t data_type;
73			senact_data_category_t data_category;
74			senact_data_unit_t data_unit;
75			} senact_device_type_t;
76
77			#define SENACT_DATA_CATEGORY_UNKNOWN 0x00
78			#define SENACT_DATA_CATEGORY_RAW 0x01 /* generic raw data, unspecified */
79			#define SENACT_DATA_CATEGORY_POS_X 0x10 /* position X coordinate */
80			#define SENACT_DATA_CATEGORY_POS_Y 0x11 /* position Y coordinate */
81			#define SENACT_DATA_CATEGORY_POS_Z 0x12 /* position Z coordinate */
82			#define SENACT_DATA_CATEGORY_VELOCITY 0x13 /* movement speed */
83			#define SENACT_DATA_CATEGORY_ACCEL_X 0x14
84			#define SENACT_DATA_CATEGORY_ACCEL_Y 0x15
85			#define SENACT_DATA_CATEGORY_ACCEL_Z 0x16
86			#define SENACT_DATA_CATEGORY_LENGTH 0x17 /* length measurement */
87			#define SENACT_DATA_CATEGORY_DISTANCE 0x18 /* distance measurement */
88			#define SENACT_DATA_CATEGORY_WEIGHT 0x19 /* weight measurement */
89			#define SENACT_DATA_CATEGORY_LOAD_CAPACITY 0x1a /* load capacity (e.g. battery capacity) */
90			#define SENACT_DATA_CATEGORY_LOAD 0x1b /* load amount (e.g. battery capacity) */
91			#define SENACT_DATA_CATEGORY_BUTTON 0x20
92			#define SENACT_DATA_CATEGORY_TEMPERATURE 0x21
93			#define SENACT_DATA_CATEGORY_PRESSURE 0x22
94
95
96			#define SENACT_DATA_UNIT_UNKNOWN 0x00
97			#define SENACT_DATA_UNIT_MILLIMETER 0x01 /* millimeters (position/distance) */
98			#define SENACT_DATA_UNIT_INCH 0x02 /* inch (position/distance) */
99			#define SENACT_DATA_UNIT_KMH 0x03 /* kilometers per hour (speed) */
100			#define SENACT_DATA_UNIT_MPH 0x04 /* miles per hour (speed) */
101			#define SENACT_DATA_UNIT_GRAMM 0x05 /* gramm (weight) */
102			#define SENACT_DATA_UNIT_PERCENT 0x05 /* percentage (0 - 100) */
103
104
105		✗	static unsigned senact_strlen(char const* text)
106			{
107		✗	unsigned length = 0;
108		✗	if (text)
109			{
110		✗	while (*text)
111			{
112		✗	++length;
113		✗	++text;
114			}
115			}
116		✗	return length;
117			}
118
119		✗	static unsigned senact_check_token(char const* target, unsigned target_len, char const* token, unsigned token_len)
120			{
121		✗	unsigned ret = 0;
122		✗	if (target_len >= token_len)
123			{
124		✗	ret = token_len;
125		✗	while (token_len-- != 0)
126			{
127		✗	if (*token != *target)
128			{
129		✗	ret = 0;
130		✗	break;
131			}
132		✗	++target;
133		✗	++token;
134			}
135			}
136		✗	return ret;
137			}
138
139			#ifndef SENACT_MAX_TEXT_LENGTH
140			#define SENACT_MAX_TEXT_LENGTH 62
141			#endif
142
143			typedef struct senact_value
144			{
145			unsigned char value_type;
146			union
147			{
148			long int_value;
149			float float_value;
150			char text_value[SENACT_MAX_TEXT_LENGTH + 1];
151			};
152			} senact_value_t;
153
154		✗	static int senact_parse_digit(char chr)
155			{
156		✗	if ((chr >= '0') && (chr <= '9'))
157			{
158		✗	return (int)(chr - '0');
159			}
160		✗	return -1;
161			}
162
163		✗	static unsigned senact_parse_value(char const* source, unsigned source_len, senact_value_t* value)
164			{
165		✗	unsigned chars_parsed = 0;
166			int digit;
167		✗	int sign = 1;
168		✗	int escape_mode = 0;
169		✗	char* text_ptr = &value->text_value[0];
170		✗	unsigned text_len = sizeof(value->text_value) - 1;
171			float decimal_factor;
172
173			do
174			{
175		✗	if (source_len == 0)
176			{
177		✗	break;
178			}
179
180		✗	if (*source == '\"')
181			{
182			/* text value */
183		✗	value->value_type = SENACT_DATA_TYPE_TEXT;
184		✗	++source;
185		✗	--source_len;
186		✗	++chars_parsed;
187		✗	while ((source_len != 0) && (text_len != 0))
188			{
189		✗	if (escape_mode)
190			{
191		✗	switch (*source)
192			{
193		✗	case 'r': *text_ptr = '\r'; break;
194		✗	case 'n': *text_ptr = '\r'; break;
195		✗	case '\\': *text_ptr = '\r'; break;
196		✗	case '\"': *text_ptr = '\"'; break;
197		✗	case '\'': *text_ptr = '\''; break;
198		✗	case 't': *text_ptr = '\r'; break;
199		✗	case 'b': *text_ptr = '\r'; break;
200		✗	default: *text_ptr = *source; break;
201			}
202		✗	++text_ptr;
203		✗	--text_len;
204		✗	++source;
205		✗	--source_len;
206		✗	++chars_parsed;
207		✗	escape_mode = 0;
208			}
209			else
210			{
211		✗	if (*source == '\"')
212			{
213			/* end of string found */
214		✗	++chars_parsed;
215		✗	break;
216			}
217		✗	else if (*source == '\\')
218			{
219		✗	escape_mode = 1;
220			}
221			else
222			{
223		✗	value->text_value[text_len] = *source;
224		✗	++text_len;
225			}
226		✗	++chars_parsed;
227		✗	++source;
228		✗	--source_len;
229			}
230
231			}
232		✗	*text_ptr = 0;
233		✗	break;
234			}
235
236			/* expect a number */
237		✗	value->value_type = SENACT_DATA_TYPE_INT;
238		✗	value->int_value = 0;
239
240		✗	if (*source == '-')
241			{
242		✗	sign = -1;
243		✗	++source;
244		✗	--source_len;
245		✗	++chars_parsed;
246			}
247
248		✗	while (source_len != 0)
249			{
250		✗	digit = senact_parse_digit(*source);
251		✗	if (digit < 0)
252			{
253		✗	break;
254			}
255		✗	value->int_value *= 10;
256		✗	value->int_value += (digit * sign);
257
258		✗	++source;
259		✗	--source_len;
260		✗	++chars_parsed;
261			}
262		✗	if (source_len == 0) break;
263
264		✗	if (*source == '.')
265			{
266			/* seems to be a floating point value*/
267		✗	value->float_value = (float)value->int_value;
268		✗	value->value_type = SENACT_DATA_TYPE_FLOAT;
269		✗	++source;
270		✗	--source_len;
271		✗	++chars_parsed;
272
273		✗	decimal_factor = 0.1f * (float)sign;
274		✗	while (source_len != 0)
275			{
276		✗	digit = senact_parse_digit(*source);
277		✗	if (digit < 0)
278			{
279		✗	break;
280			}
281		✗	value->float_value += (decimal_factor * (float)digit);
282		✗	decimal_factor *= 0.1f;
283
284		✗	++source;
285		✗	--source_len;
286		✗	++chars_parsed;
287			}
288			}
289
290			} while (0);
291
292		✗	return chars_parsed;
293			}
294
295		✗	static void senact_revert_string(char* target, unsigned target_len)
296			{
297			unsigned ndx, cnt;
298			char tmp;
299
300		✗	cnt = target_len / 2;
301		✗	for (ndx = 0; ndx != cnt; ++ndx)
302			{
303		✗	tmp = target[ndx];
304		✗	target[ndx] = target[target_len - 1 - ndx];
305		✗	target[target_len - 1 - ndx] = tmp;
306			}
307		✗	}
308
309		✗	static unsigned senact_print_int(char* target, unsigned target_capacity, long value)
310			{
311		✗	unsigned ret = 0;
312			unsigned long ul;
313			int digit;
314			unsigned index;
315
316
317			do
318			{
319		✗	if (target_capacity < 2) break;
320		✗	--target_capacity;
321
322			/*
323			if(value == 0)
324			{
325			*target = '0';
326			++target;
327			++ret;
328			*target = 0;
329			--target_capacity;
330			break;
331			}
332			*/
333
334		✗	if (value < 0)
335			{
336		✗	*target = '-';
337		✗	++target;
338		✗	++ret;
339		✗	--target_capacity;
340		✗	ul = (unsigned long)-value;
341			}
342			else
343			{
344		✗	ul = (unsigned long)value;
345			}
346
347		✗	index = 0;
348			do
349			{
350		✗	if (index >= target_capacity)
351			{
352		✗	break;
353			}
354		✗	digit = (int)(ul % 10);
355		✗	ul /= 10;
356		✗	target[index] = (char)('0' + digit);
357
358		✗	++index;
359		✗	} while (ul != 0);
360
361		✗	senact_revert_string(target, index);
362		✗	target[index] = 0;
363		✗	ret += index;
364			} while (0);
365		✗	return ret;
366			}
367		✗	static unsigned senact_print_float(char* target, unsigned target_capacity, float value, unsigned decimal_len)
368			{
369		✗	unsigned ret = 0;
370		✗	long int_value = (long)value;
371		✗	float decimal = value - (float)int_value;
372			unsigned index;
373		✗	float factor = 1.0f;
374			int digit;
375
376			do
377			{
378		✗	if (decimal < 0.0f) decimal *= -1.0f;
379
380		✗	ret = senact_print_int(target, target_capacity, int_value);
381		✗	if (ret == 0) break;
382
383		✗	target += ret;
384		✗	target_capacity -= ret;
385
386		✗	if (target_capacity < 2) break;
387		✗	--target_capacity;
388
389		✗	*target = '.';
390		✗	++target;
391		✗	++ret;
392		✗	--target_capacity;
393
394		✗	for (index = 0; (index < decimal_len) && (target_capacity != 0); ++index)
395			{
396		✗	factor *= 10.0f;
397		✗	digit = (int)(decimal * factor);
398		✗	*target = (char)('0' + digit);
399		✗	decimal -= (float)digit / factor;
400
401		✗	++target;
402		✗	++ret;
403		✗	--target_capacity;
404			}
405
406		✗	*target = 0;
407			} while (0);
408
409		✗	return ret;
410
411			}
412		✗	static unsigned senact_print_text(char* target, unsigned target_capacity, char const* text, unsigned text_len)
413			{
414		✗	unsigned ret = 0;
415			char chr;
416			do
417			{
418		✗	if (target_capacity < 4)
419			{
420		✗	break;
421			}
422		✗	target_capacity -= 4;
423
424		✗	*target = '\"';
425		✗	++target;
426
427		✗	while ((target_capacity != 0) && (text_len != 0))
428			{
429		✗	chr = *text;
430		✗	switch (chr)
431			{
432		✗	case '\r':
433			{
434		✗	*target = '\\';
435		✗	++target;
436		✗	--target_capacity;
437		✗	chr = 'r';
438		✗	break;
439			}
440		✗	case '\n':
441			{
442		✗	*target = '\\';
443		✗	++target;
444		✗	--target_capacity;
445		✗	chr = 'n';
446		✗	break;
447			}
448		✗	case '\t':
449			{
450		✗	*target = '\\';
451		✗	++target;
452		✗	--target_capacity;
453		✗	chr = 't';
454		✗	break;
455			}
456		✗	case '\\':
457			{
458		✗	*target = '\\';
459		✗	++target;
460		✗	--target_capacity;
461		✗	chr = '\\';
462		✗	break;
463			}
464		✗	case '\"':
465			{
466		✗	*target = '\\';
467		✗	++target;
468		✗	--target_capacity;
469		✗	chr = '\"';
470		✗	break;
471			}
472		✗	case '\'':
473			{
474		✗	*target = '\\';
475		✗	++target;
476		✗	--target_capacity;
477		✗	chr = '\'';
478		✗	break;
479			}
480		✗	default:
481			{
482		✗	break;
483			}
484			}
485
486		✗	*target = chr;
487		✗	++target;
488		✗	++text;
489		✗	if (target_capacity != 0)
490			{
491		✗	--target_capacity;
492			}
493		✗	--text_len;
494			}
495			} while (0);
496
497		✗	*target = '\"';
498		✗	++target;
499		✗	++ret;
500		✗	*target = '\0';
501
502		✗	return ret;
503			}
504
505		✗	static unsigned senact_print_value(senact_value_t const* value, char* target, unsigned target_capacity)
506			{
507		✗	unsigned ret = 0;
508		✗	switch (value->value_type)
509			{
510		✗	case SENACT_DATA_TYPE_INT:
511			{
512		✗	ret = senact_print_int(target, target_capacity, value->int_value);
513		✗	break;
514			}
515		✗	case SENACT_DATA_TYPE_FLOAT:
516			{
517		✗	ret = senact_print_float(target, target_capacity, value->float_value, 6);
518		✗	break;
519			}
520		✗	case SENACT_DATA_TYPE_TEXT:
521			{
522		✗	ret = senact_print_text(target, target_capacity, value->text_value, senact_strlen(value->text_value));
523		✗	break;
524			}
525		✗	default:
526			{
527		✗	break;
528			}
529			}
530		✗	return ret;
531			}
532
533
534			typedef int (*senact_function_inspect_sensor_t)(senact_device_id_t id, void* device_param,
535			senact_data_type_t* output_data_type,
536			senact_data_category_t* output_data_category,
537			senact_data_unit_t* output_data_unit);
538
539			typedef int (*senact_function_read_sensor_t)(senact_device_id_t id, senact_value_t* output_value);
540
541
542			typedef int (*senact_function_inspect_actor_t)(senact_device_id_t id, void* device_param,
543			senact_data_type_t* output_data_type,
544			senact_data_category_t* output_data_category,
545			senact_data_unit_t* output_data_unit);
546
547			typedef int (*senact_function_update_actor_t)(senact_device_id_t id, senact_value_t const* value);
548
549			typedef struct
550			{
551			senact_device_id_t sensor_id;
552			void* sensor_param;
553			senact_function_inspect_sensor_t inspect_sensor;
554			senact_function_read_sensor_t read_sensor;
555
556			} senact_sensor_t;
557
558			typedef struct
559			{
560			senact_device_id_t actor_id;
561			void* actor_param;
562			senact_function_inspect_actor_t inspect_actor;
563			senact_function_update_actor_t update_actor;
564			} senact_actor_t;
565
566			#ifndef SENACT_MAX_SENSOR_COUNT
567			#define SENACT_MAX_SENSOR_COUNT 16
568			#endif
569			#ifndef SENACT_MAX_ACTOR_COUNT
570			#define SENACT_MAX_ACTOR_COUNT 16
571			#endif
572
573			static senact_sensor_t sensors[SENACT_MAX_SENSOR_COUNT];
574			static senact_actor_t actors[SENACT_MAX_ACTOR_COUNT];
575
576
577
578
579
580
581
582			#define SENACT_MSG_TYPE_QUERY_SENSOR_COUNT 0x10
583			#define SENACT_MSG_TYPE_RESPONSE_SENSOR_COUNT 0x11
584			static char senact_id_query_sensor_count[] = { 'Q', 'S', 'C', ':' };
585			static char senact_id_response_sensors_count[] = { 'R', 'S', 'C', ':' };
586
587			typedef struct senact_query_sensor_count
588			{
589			unsigned char msg_type;
590			} senact_query_sensor_count_t;
591
592		✗	static unsigned senact_print_query_sensor_count(senact_query_sensor_count_t const* msg, char* target, unsigned target_capacity)
593			{
594		✗	unsigned ret = 0;
595			/* TODO implementation */
596		✗	return ret;
597			}
598		✗	static unsigned senact_parse_query_sensor_count(char const* source, unsigned source_length, senact_query_sensor_count_t* msg)
599			{
600		✗	unsigned ret = 0;
601			/* TODO implementation */
602		✗	return ret;
603			}
604
605
606
607			typedef struct senact_msg_header
608			{
609			unsigned char msg_type;
610			} senact_msg_header_t;
611
612
613			typedef struct senact_response_sensor_count
614			{
615			senact_msg_header_t header;
616			long sensor_count;
617			} senact_response_sensor_count_t;
618
619
620			static char senact_id_query_list_actors[] = { 'Q', 'L', 'A' };
621			static char senact_id_response_list_actors[] = { 'R', 'L', 'A' };
622
623			static char senact_id_query_sensor_value[] = { 'Q', 'S', 'V' };
624			static char senact_id_response_sensor_value[] = { 'R', 'S', 'V' };
625
626
627			typedef struct senact_msg_request_list_sensors
628			{
629			unsigned char msg_type[4];
630			unsigned short msg_length;
631			} senact_msg_request_list_sensors_t;
632
633
634
635			typedef union senact_msg
636			{
637			senact_msg_header_t header;
638
639			} senact_msg_t;
640
641			typedef struct senact_field_reflector
642			{
643			char key;
644			unsigned char data_type;
645			unsigned offset;
646			} senact_field_reflector_t;
647
648			typedef struct senact_msg_reflector
649			{
650			unsigned char msg_type;
651			char msg_id_token[3];
652			senact_field_reflector_t values[4];
653			} senact_msg_reflector_t;
654
655			static senact_msg_reflector_t senact_msg_reflectors[] =
656			{
657			{
658			SENACT_MSG_TYPE_QUERY_SENSOR_COUNT,
659			{ 'Q', 'S', 'C' },
660			{ 0 }
661			},
662			{
663			SENACT_MSG_TYPE_RESPONSE_SENSOR_COUNT,
664			{ 'R', 'S', 'C' },
665			{
666			{ 'V', SENACT_DATA_TYPE_INT, offsetof(senact_response_sensor_count_t, sensor_count) }
667			}
668			}
669
670			};
671
672
673			#if defined(__cplusplus)
674			}
675			#endif
676
677			#endif
678
679