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comparison: brewco/rdconfig.c

brewco/rdconfig.c

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1 /*****************************************************************************
2 * Copyright (C) 2015
3 *
4 * Michiel Broek <mbroek at mbse dot eu>
5 *
6 * This file is part of the mbsePi-apps
7 *
8 * This is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2, or (at your option) any
11 * later version.
12 *
13 * mbsePi-apps is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with ThermFerm; see the file COPYING. If not, write to the Free
20 * Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
21 *****************************************************************************/
22
23 #include "rdconfig.h"
24 #include "brewco.h"
25 #include "futil.h"
26 #include "xutil.h"
27
28 int debug = FALSE;
29 sys_config Config; /* System configuration */
30
31 #define MY_ENCODING "utf-8"
32
33 const char TEMPSTATE[3][8] = { "OK", "MISSING", "ERROR" };
34 //const char DEVTYPE[8][6] = { "NA", "W1", "GPIO", "RC433", "DHT", "I2C", "SPI", "SIM" };
35 //const char DEVPRESENT[4][6] = { "UNDEF", "NO", "YES", "ERROR" };
36 //const char DEVDIR[7][11] = { "UNDEF", "IN_BIN", "OUT_BIN", "IN_ANALOG", "OUT_ANALOG", "OUT_PWM", "INTERN" };
37 //const char PIDMODE[3][5] = { "NONE", "AUTO", "BOO" };
38
39
40 void killconfig(void)
41 {
42
43 if (Config.name)
44 free(Config.name);
45 Config.name = NULL;
46
47 Config.tempFormat = 'C';
48 if (Config.hlt_sensor_address)
49 free(Config.hlt_sensor_address);
50 if (Config.mlt_sensor_address)
51 free(Config.mlt_sensor_address);
52 Config.hlt_sensor_address = Config.mlt_sensor_address = NULL;
53 Config.hlt_sensor_value = Config.mlt_sensor_value = 20000;
54 Config.hlt_sensor_state = Config.mlt_sensor_state = 1; // missing
55
56 #ifdef HAVE_WIRINGPI_H
57 Config.lcd_cols = 16;
58 Config.lcd_rows = 2;
59 #endif
60 }
61
62
63
64 int do_wrconfig(void);
65 int do_wrconfig(void)
66 {
67 int rc = 0;
68 FILE *fp;
69 char *mypath = NULL;
70 xmlTextWriterPtr writer;
71 xmlBufferPtr buf;
72
73 /*
74 * Create a new XML buffer, to which the XML document will be written
75 */
76 if ((buf = xmlBufferCreate()) == NULL) {
77 syslog(LOG_NOTICE, "wrconfig: error creating the xml buffer");
78 return 1;
79 }
80
81 /*
82 * Create a new XmlWriter for memory, with no compression.
83 */
84 if ((writer = xmlNewTextWriterMemory(buf, 0)) == NULL) {
85 syslog(LOG_NOTICE, "wrconfig: error creating the xml writer");
86 return 1;
87 }
88
89 /*
90 * Use indentation instead of one long line
91 */
92 if ((rc = xmlTextWriterSetIndent(writer, 2)) < 0) {
93 syslog(LOG_NOTICE, "wrconfig: error setting Indent");
94 return 1;
95 }
96
97 /*
98 * Start the document with the xml default for the version,
99 * encoding ISO 8859-1 and the default for the standalone
100 * declaration.
101 */
102 if ((rc = xmlTextWriterStartDocument(writer, NULL, MY_ENCODING, NULL)) < 0) {
103 syslog(LOG_NOTICE, "wrconfig: error at xmlTextWriterStartDocument");
104 return 1;
105 }
106
107 /*
108 * Start an element named "BREWCO". Since thist is the first
109 * element, this will be the root element of the document.
110 */
111 if ((rc = xmlTextWriterStartElement(writer, BAD_CAST "BREWCO")) < 0) {
112 syslog(LOG_NOTICE, "wrconfig: error at xmlTextWriterStartElement");
113 return 1;
114 }
115
116 /*
117 * Add an attribute with name "VERSION" and value "1" to BRWCO.
118 */
119 if ((rc = xmlTextWriterWriteElement(writer, BAD_CAST "VERSION", BAD_CAST "1")) < 0) {
120 syslog(LOG_NOTICE, "wrconfig: error at xmlTextWriterWriteElement");
121 return 1;
122 }
123 if ((rc = xmlTextWriterWriteFormatElement(writer, BAD_CAST "NAME", "%s", Config.name)) < 0) {
124 syslog(LOG_NOTICE, "wrconfig: error at xmlTextWriterWriteFormatElement");
125 return 1;
126 }
127 if ((rc = xmlTextWriterWriteFormatElement(writer, BAD_CAST "TEMPFORMAT", "%c", Config.tempFormat)) < 0) {
128 syslog(LOG_NOTICE, "wrconfig: error at xmlTextWriterWriteFormatElement");
129 return 1;
130 }
131 if ((rc = xmlTextWriterWriteFormatElement(writer, BAD_CAST "HLT_SENSOR_ADDRESS", "%s", Config.hlt_sensor_address)) < 0) {
132 syslog(LOG_NOTICE, "wrconfig: error at xmlTextWriterWriteFormatElement");
133 return 1;
134 }
135 if ((rc = xmlTextWriterWriteFormatElement(writer, BAD_CAST "HLT_SENSOR_STATE", "%d", Config.hlt_sensor_state)) < 0) {
136 syslog(LOG_NOTICE, "wrconfig: error at xmlTextWriterWriteFormatElement");
137 return 1;
138 }
139 if ((rc = xmlTextWriterWriteFormatElement(writer, BAD_CAST "HLT_SENSOR_VALUE", "%d", Config.hlt_sensor_value)) < 0) {
140 syslog(LOG_NOTICE, "wrconfig: error at xmlTextWriterWriteFormatElement");
141 return 1;
142 }
143 if ((rc = xmlTextWriterWriteFormatElement(writer, BAD_CAST "MLT_SENSOR_ADDRESS", "%s", Config.mlt_sensor_address)) < 0) {
144 syslog(LOG_NOTICE, "wrconfig: error at xmlTextWriterWriteFormatElement");
145 return 1;
146 }
147 if ((rc = xmlTextWriterWriteFormatElement(writer, BAD_CAST "MLT_SENSOR_STATE", "%d", Config.mlt_sensor_state)) < 0) {
148 syslog(LOG_NOTICE, "wrconfig: error at xmlTextWriterWriteFormatElement");
149 return 1;
150 }
151 if ((rc = xmlTextWriterWriteFormatElement(writer, BAD_CAST "MLT_SENSOR_VALUE", "%d", Config.mlt_sensor_value)) < 0) {
152 syslog(LOG_NOTICE, "wrconfig: error at xmlTextWriterWriteFormatElement");
153 return 1;
154 }
155
156 #ifdef HAVE_WIRINGPI_H
157 /*
158 * Start an element named "LCDS" as child of BREWCO.
159 */
160 if ((rc = xmlTextWriterStartElement(writer, BAD_CAST "LCDS")) < 0) {
161 syslog(LOG_NOTICE, "wrconfig: error at xmlTextWriterStartElement");
162 return 1;
163 }
164 /*
165 * Start one LCD. It is possible to connect 7 LCD displays on the i2c bus.
166 * However this program doesn't use more then one yet.
167 */
168 if ((rc = xmlTextWriterStartElement(writer, BAD_CAST "LCD")) < 0) {
169 syslog(LOG_NOTICE, "wrconfig: error at xmlTextWriterStartElement");
170 return 1;
171 }
172 if ((rc = xmlTextWriterWriteElement(writer, BAD_CAST "VERSION", BAD_CAST "1")) < 0) {
173 syslog(LOG_NOTICE, "wrconfig: error at xmlTextWriterWriteElement");
174 return 1;
175 }
176 if ((rc = xmlTextWriterWriteFormatElement(writer, BAD_CAST "ADDRESS", "0x%x", Config.lcd_address)) < 0) {
177 syslog(LOG_NOTICE, "wrconfig: error at xmlTextWriterWriteFormatElement");
178 return 1;
179 }
180 if ((rc = xmlTextWriterWriteFormatElement(writer, BAD_CAST "COLUMNS", "%d", Config.lcd_cols)) < 0) {
181 syslog(LOG_NOTICE, "wrconfig: error at xmlTextWriterWriteFormatElement");
182 return 1;
183 }
184 if ((rc = xmlTextWriterWriteFormatElement(writer, BAD_CAST "ROWS", "%d", Config.lcd_rows)) < 0) {
185 syslog(LOG_NOTICE, "wrconfig: error at xmlTextWriterWriteFormatElement");
186 return 1;
187 }
188 /*
189 * Close the element named LCD.
190 */
191 if ((rc = xmlTextWriterEndElement(writer)) < 0) {
192 syslog(LOG_NOTICE, "wrconfig: error at xmlTextWriterEndElement");
193 return 1;
194 }
195 /*
196 * Close the element LCDS.
197 */
198 if ((rc = xmlTextWriterEndElement(writer)) < 0) {
199 syslog(LOG_NOTICE, "wrconfig: error at xmlTextWriterEndElement");
200 return 1;
201 }
202 #endif
203
204 /*
205 * All done, close any open elements
206 */
207 if ((rc = xmlTextWriterEndDocument(writer)) < 0) {
208 syslog(LOG_NOTICE, "wrconfig: error at xmlTextWriterEndDocument");
209 return 1;
210 }
211 xmlFreeTextWriter(writer);
212
213 /*
214 * Now write the XML configuration
215 */
216 if (getenv((char *)"USER") == NULL) {
217 mypath = xstrcpy((char *)"/root");
218 } else {
219 mypath = xstrcpy(getenv((char *)"HOME"));
220 }
221 mypath = xstrcat(mypath, (char *)"/.brewco/etc/");
222 mkdirs(mypath, 0755);
223 mypath = xstrcat(mypath, (char *)"brewco.xml");
224
225 if (debug)
226 fprintf(stdout, "Writing %s\n", mypath);
227
228 if ((fp = fopen(mypath, "w")) == NULL) {
229 syslog(LOG_NOTICE, "could not rewrite %s", mypath);
230 free(mypath);
231 return 1;
232 }
233 free(mypath);
234
235 fprintf(fp, "%s", (const char *) buf->content);
236 fclose(fp);
237 xmlBufferFree(buf);
238
239 return 0;
240 }
241
242
243
244 int wrconfig(void)
245 {
246 int rc;
247
248 rc = do_wrconfig();
249 syslog(LOG_NOTICE, "Rewritten configuration, rc=%d", rc);
250 return rc;
251 }
252
253
254
255 /*
256 * Parse one LCD display
257 */
258 #ifdef HAVE_WIRINGPI_H
259 int parseLCD(xmlDocPtr doc, xmlNodePtr cur)
260 {
261 xmlChar *key;
262 int ival;
263
264 cur = cur->xmlChildrenNode;
265 while (cur != NULL) {
266 if ((!xmlStrcmp(cur->name, (const xmlChar *)"COLUMNS"))) {
267 key = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);
268 if (sscanf((const char *)key, "%d", &ival) == 1)
269 Config.lcd_cols = ival;
270 xmlFree(key);
271 }
272 if ((!xmlStrcmp(cur->name, (const xmlChar *)"ROWS"))) {
273 key = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);
274 if (sscanf((const char *)key, "%d", &ival) == 1)
275 Config.lcd_rows = ival;
276 xmlFree(key);
277 }
278 if ((!xmlStrcmp(cur->name, (const xmlChar *)"ADDRESS"))) {
279 key = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);
280 if (sscanf((const char *)key, "%x", &ival) == 1)
281 Config.lcd_address = ival;
282 xmlFree(key);
283 }
284 cur = cur->next;
285 }
286
287 return 0;
288 }
289
290
291
292 int parseLCDs(xmlDocPtr doc, xmlNodePtr cur)
293 {
294 cur = cur->xmlChildrenNode;
295 while (cur != NULL) {
296 if ((!xmlStrcmp(cur->name, (const xmlChar *)"LCD"))) {
297 parseLCD(doc, cur);
298 }
299 cur = cur->next;
300 }
301 return 0;
302 }
303 #endif
304
305
306
307 int rdconfig(void)
308 {
309 int rc = 0;
310 char *mypath;
311 xmlDocPtr doc;
312 xmlNodePtr cur;
313 xmlChar *key;
314
315 killconfig();
316 syslog(LOG_NOTICE, "HOME='%s' USER='%s' LOGNAME='%s'", MBSE_SS(getenv((char *)"HOME")), MBSE_SS(getenv((char *)"USER")), MBSE_SS(getenv((char *)"LOGNAME")));
317
318 /*
319 * Search config file
320 */
321 if (getenv((char *)"USER") == NULL) {
322 mypath = xstrcpy((char *)"/root");
323 } else {
324 mypath = xstrcpy(getenv((char *)"HOME"));
325 }
326 mypath = xstrcat(mypath, (char *)"/.brewco/etc/");
327 mkdirs(mypath, 0755);
328 mypath = xstrcat(mypath, (char *)"brewco.xml");
329 if ((doc = xmlParseFile(mypath)) == NULL) {
330 /*
331 * No config file, create a fresh one
332 */
333 syslog(LOG_NOTICE, "rdconfig: %s not found, creating", mypath);
334 wrconfig();
335
336 if ((doc = xmlParseFile(mypath)) == NULL) {
337 syslog(LOG_NOTICE, "rdconfig: could not create %s", mypath);
338 free(mypath);
339 return 1;
340 }
341 }
342 syslog(LOG_NOTICE, "rdconfig: using %s", mypath);
343
344 if ((cur = xmlDocGetRootElement(doc)) == NULL) {
345 syslog(LOG_NOTICE, "XML file %s empty.", mypath);
346 xmlFreeDoc(doc);
347 return 1;
348 }
349 if (xmlStrcmp(cur->name, (const xmlChar*)"BREWCO")) {
350 syslog(LOG_NOTICE, "XML file %s is not a valid configuration file.", mypath);
351 xmlFreeDoc(doc);
352 return 1;
353 }
354
355 /*
356 * Parse configuration
357 */
358 cur = cur->xmlChildrenNode;
359 while (cur != NULL) {
360 if ((!xmlStrcmp(cur->name, (const xmlChar *)"VERSION"))) {
361 key = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);
362 if (xmlStrcmp(key, (const xmlChar *)"1")) {
363 xmlFree(key);
364 syslog(LOG_NOTICE, "XML file %s is not a valid version", mypath);
365 return 1;
366 }
367 xmlFree(key);
368 }
369 if ((!xmlStrcmp(cur->name, (const xmlChar *)"NAME"))) {
370 Config.name = (char *)xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);
371 }
372 if ((!xmlStrcmp(cur->name, (const xmlChar *)"TEMPFORMAT"))) {
373 key = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);
374 Config.tempFormat = key[0];
375 xmlFree(key);
376 }
377 if ((!xmlStrcmp(cur->name, (const xmlChar *)"HLT_SENSOR_ADDRESS"))) {
378 Config.hlt_sensor_address = (char *)xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);
379 }
380 if ((!xmlStrcmp(cur->name, (const xmlChar *)"MLT_SENSOR_ADDRESS"))) {
381 Config.mlt_sensor_address = (char *)xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);
382 }
383 #ifdef HAVE_WIRINGPI_H
384 if ((!xmlStrcmp(cur->name, (const xmlChar *)"LCDS"))) {
385 parseLCDs(doc, cur);
386 }
387 #endif
388 cur = cur->next;
389 }
390 xmlFreeDoc(doc);
391
392 free(mypath);
393 mypath = NULL;
394
395 return rc;
396 }
397
398
399

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