1: /*************************************************************************
2: * (C) 2008 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
3: * by Michael Pounov <misho@openbsd-bg.org>
4: *
5: * $Author: misho $
6: * $Id: queue.c,v 1.18 2019/12/05 14:33:35 misho Exp $
7: *
8: **************************************************************************
9: The ELWIX and AITNET software is distributed under the following
10: terms:
11:
12: All of the documentation and software included in the ELWIX and AITNET
13: Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
14:
15: Copyright 2004 - 2019
16: by Michael Pounov <misho@elwix.org>. All rights reserved.
17:
18: Redistribution and use in source and binary forms, with or without
19: modification, are permitted provided that the following conditions
20: are met:
21: 1. Redistributions of source code must retain the above copyright
22: notice, this list of conditions and the following disclaimer.
23: 2. Redistributions in binary form must reproduce the above copyright
24: notice, this list of conditions and the following disclaimer in the
25: documentation and/or other materials provided with the distribution.
26: 3. All advertising materials mentioning features or use of this software
27: must display the following acknowledgement:
28: This product includes software developed by Michael Pounov <misho@elwix.org>
29: ELWIX - Embedded LightWeight unIX and its contributors.
30: 4. Neither the name of AITNET nor the names of its contributors
31: may be used to endorse or promote products derived from this software
32: without specific prior written permission.
33:
34: THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
35: ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
36: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
37: ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
38: FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
39: DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
40: OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
41: HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
42: LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
43: OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
44: SUCH DAMAGE.
45: */
46: #include "global.h"
47:
48:
49: static inline struct tagCfg *
50: _selectAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
51: {
52: struct tagCfg fav, *c;
53:
54: if (!cfg)
55: return NULL;
56: else
57: memset(&fav, 0, sizeof fav);
58:
59: if (csSec && *csSec)
60: AIT_KEY(&fav.cfg_sec) = crcFletcher16((u_short*) csSec,
61: E_ALIGN(strlen(csSec), 2) / 2);
62: if (csAttr)
63: AIT_KEY(&fav.cfg_attr) = crcFletcher16((u_short*) csAttr,
64: E_ALIGN(strlen(csAttr), 2) / 2);
65:
66: if (!csAttr)
67: return RB_NFIND(tagRC, cfg, &fav);
68: else {
69: c = RB_FIND(tagRC, cfg, &fav);
70: if (!c)
71: return NULL; /* not found */
72: do {
73: if (!strcmp(AIT_GET_STR(&c->cfg_attr), csAttr))
74: return c; /* FOUND! */
75: } while ((c = RB_NEXT(tagRC, cfg, c)) && c && !cfg_tree_cmp(c, &fav));
76: return NULL; /* not found */
77: }
78: }
79:
80: /* --------------------------------------------------------------- */
81:
82: /*
83: * cfg_dumpCfg() - dump config data
84: *
85: * @cfg = Config root
86: * return: none
87: */
88: void
89: cfg_dumpCfg(cfg_root_t * __restrict cfg)
90: {
91: struct tagCfg *r, *c, *ctmp, *q, *qtmp;
92: int syn;
93:
94: r = RB_ROOT(cfg);
95: printf("ROOT:: KEY=%.8x [%s] %s=%s\n", ((AIT_KEY(&r->cfg_sec) << 15) | AIT_KEY(&r->cfg_attr)),
96: AIT_ADDR(&r->cfg_sec), AIT_ADDR(&r->cfg_attr), AIT_ADDR(&r->cfg_val));
97:
98: RB_FOREACH_SAFE(c, tagRC, cfg, ctmp) {
99: syn ^= syn;
100: TAILQ_FOREACH_SAFE(q, cfg, cfg_next, qtmp) {
101: if (c == q) {
102: syn = 42;
103: break;
104: }
105: }
106:
107: printf("%s KEY=%.8x [%s] %s=%s sync=%d\n", c == r ? "*" : "",
108: ((AIT_KEY(&c->cfg_sec) << 15) | AIT_KEY(&c->cfg_attr)),
109: AIT_ADDR(&c->cfg_sec), AIT_ADDR(&c->cfg_attr), AIT_ADDR(&c->cfg_val), syn);
110: }
111: }
112:
113: /*
114: * cfg_getSection() - Get entire section attributes into array
115: *
116: * @cfg = Config root
117: * @csSec = Config section //[{csSec}]
118: * return: NULL not found or !=NULL allocated array, must free with array_Destroy() after use!
119: */
120: array_t *
121: cfg_getSection(cfg_root_t * __restrict cfg, const char *csSec)
122: {
123: array_t *arr = NULL;
124: struct tagCfg *av, fav;
125:
126: if (!cfg) {
127: cfg_SetErr(EINVAL, "Invalid argument(s)");
128: return NULL;
129: } else
130: memset(&fav, 0, sizeof fav);
131: if (csSec && !*csSec)
132: csSec = NULL;
133:
134: if (csSec && *csSec)
135: AIT_KEY(&fav.cfg_sec) = crcFletcher16((u_short*) csSec,
136: E_ALIGN(strlen(csSec), 2) / 2);
137:
138: arr = array_Init(0);
139: if (!arr) {
140: cfg_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
141: return NULL;
142: }
143:
144: TAILQ_FOREACH(av, cfg, cfg_next)
145: if (AIT_KEY(&av->cfg_sec) == AIT_KEY(&fav.cfg_sec)) {
146: if (!csSec) {
147: if (AIT_ISEMPTY(&av->cfg_sec))
148: array_Push(arr, av, 0);
149: } else {
150: if (!AIT_ISEMPTY(&av->cfg_sec) &&
151: !strcmp(AIT_GET_STR(&av->cfg_sec), csSec))
152: array_Push(arr, av, 0);
153: }
154: }
155:
156: if (!array_Size(arr))
157: array_Destroy(&arr);
158:
159: return arr;
160: }
161:
162: /*
163: * cfg_findAttribute() - Find attribute position in config file
164: *
165: * @cfg = Config root
166: * @csSec = Config section //[{csSec}]
167: * @csAttr = Config attribute //{csAttr} = ..., if NULL as *any* attribute
168: * return: 0 not found item, -1 error or >0 position in list
169: */
170: int
171: cfg_findAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
172: {
173: struct tagCfg *av, fav;
174: register int cx = 0;
175:
176: if (!cfg) {
177: cfg_SetErr(EINVAL, "Invalid argument(s)");
178: return -1;
179: } else
180: memset(&fav, 0, sizeof fav);
181:
182: if (csSec && *csSec)
183: AIT_KEY(&fav.cfg_sec) = crcFletcher16((u_short*) csSec,
184: E_ALIGN(strlen(csSec), 2) / 2);
185: if (csAttr)
186: AIT_KEY(&fav.cfg_attr) = crcFletcher16((u_short*) csAttr,
187: E_ALIGN(strlen(csAttr), 2) / 2);
188:
189: TAILQ_FOREACH(av, cfg, cfg_next) {
190: ++cx;
191: if (!cfg_tree_cmp(&fav, av))
192: return cx;
193: }
194:
195: return 0;
196: }
197:
198: /*
199: * cfg_unsetAttribute() - Unset item from config and free resources
200: *
201: * @cfg = Config root
202: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
203: * @csAttr = Config attribute //{csAttr} = ..., if NULL as *any* attribute
204: * return: 0 item not found, -1 error or 1 removed item
205: */
206: int
207: cfg_unsetAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
208: {
209: struct tagCfg *av;
210:
211: if (!cfg)
212: return -1;
213:
214: av = _selectAttribute(cfg, csSec, csAttr);
215: if (!av)
216: return 0;
217:
218: CFG_RC_LOCK(cfg);
219: RB_REMOVE(tagRC, cfg, av);
220: TAILQ_REMOVE(cfg, av, cfg_next);
221: CFG_RC_UNLOCK(cfg);
222:
223: AIT_FREE_VAL(&av->cfg_val);
224: AIT_FREE_VAL(&av->cfg_attr);
225: AIT_FREE_VAL(&av->cfg_sec);
226: e_free(av);
227: return 1;
228: }
229:
230: /*
231: * cfg_setAttribute() - Set item in config or adding new item if not exists
232: *
233: * @cfg = Config root
234: * @csSec = Config section //[{csSec}], if NULL set in *default* section
235: * @csAttr = Config attribute //{csAttr} = ...
236: * @csVal = Config value //... = {csVal} to setup
237: * return: 0 nothing changed, -1 error, 1 found and updated item or 2 added new item
238: */
239: int
240: cfg_setAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr, const char *csVal)
241: {
242: struct tagCfg *av, *section;
243:
244: if (!cfg || !csAttr)
245: return -1;
246:
247: av = _selectAttribute(cfg, csSec, csAttr);
248: if (!av) {
249: /* adding new element */
250: section = _selectAttribute(cfg, csSec, NULL);
251:
252: av = e_malloc(sizeof(struct tagCfg));
253: if (!av) {
254: LOGERR;
255: return -1;
256: } else {
257: memset(av, 0, sizeof(struct tagCfg));
258:
259: CFG_RC_LOCK(cfg);
260: if (!section)
261: TAILQ_INSERT_TAIL(cfg, av, cfg_next);
262: else
263: TAILQ_INSERT_BEFORE(section, av, cfg_next);
264: CFG_RC_UNLOCK(cfg);
265: }
266:
267: if (csSec && *csSec) {
268: AIT_SET_STR(&av->cfg_sec, csSec);
269: AIT_KEY(&av->cfg_sec) = crcFletcher16(AIT_GET_LIKE(&av->cfg_sec, u_short*),
270: E_ALIGN(AIT_LEN(&av->cfg_sec) - 1, 2) / 2);
271: }
272: AIT_SET_STR(&av->cfg_val, csVal ? csVal : "");
273: AIT_SET_STR(&av->cfg_attr, csAttr);
274: AIT_KEY(&av->cfg_attr) = crcFletcher16(AIT_GET_LIKE(&av->cfg_attr, u_short*),
275: E_ALIGN(AIT_LEN(&av->cfg_attr) - 1, 2) / 2);
276:
277: CFG_RC_LOCK(cfg);
278: RB_INSERT(tagRC, cfg, av);
279: CFG_RC_UNLOCK(cfg);
280: return 2;
281: }
282:
283: if (csVal && AIT_ADDR(&av->cfg_val) &&
284: strcmp((char*) csVal, (char*) AIT_GET_STR(&av->cfg_val))) {
285: /* Update element */
286: AIT_FREE_VAL(&av->cfg_val);
287: AIT_SET_STR(&av->cfg_val, csVal);
288: return 1;
289: }
290:
291: /* Nothing happens ... found & values is equal! */
292: return 0;
293: }
294:
295: /*
296: * cfg_getAttribute() - Get item from config and return value from it
297: *
298: * @cfg = Config root
299: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
300: * @csAttr = Config attribute //{csAttr} = ..., if NULL as *any* attribute
301: * return: NULL item not found or null parameters, !=NULL value const string
302: */
303: const char *
304: cfg_getAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
305: {
306: struct tagCfg *av;
307:
308: if (!cfg)
309: return NULL;
310:
311: av = _selectAttribute(cfg, csSec, csAttr);
312: if (!av)
313: return NULL;
314:
315: return AIT_GET_STR(&av->cfg_val);
316: }
317:
318: /*
319: * cfg_getAttributeLong() - Get item as long from config and return value from it
320: *
321: * @cfg = Config root
322: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
323: * @csAttr = Config attribute //{csAttr} = ..., if NULL as *any* attribute
324: * return: value
325: */
326: long
327: cfg_getAttributeLong(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
328: {
329: const char *str = NULL;
330:
331: str = cfg_getAttribute(cfg, csSec, csAttr);
332: return strtol(str ? str : "", NULL, 0);
333: }
334:
335: /*
336: * cfg_getAttributeLLong() - Get item as long long from config and return value from it
337: *
338: * @cfg = Config root
339: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
340: * @csAttr = Config attribute //{csAttr} = ..., if NULL as *any* attribute
341: * return: value
342: */
343: long long
344: cfg_getAttributeLLong(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
345: {
346: const char *str = NULL;
347:
348: str = cfg_getAttribute(cfg, csSec, csAttr);
349: return strtoll(str ? str : "", NULL, 0);
350: }
351:
352: /*
353: * cfg_getAttributeDouble() - Get item as double from config and return value from it
354: *
355: * @cfg = Config root
356: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
357: * @csAttr = Config attribute //{csAttr} = ..., if NULL as *any* attribute
358: * return: value
359: */
360: double
361: cfg_getAttributeDouble(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
362: {
363: const char *str = NULL;
364:
365: str = cfg_getAttribute(cfg, csSec, csAttr);
366: return strtod(str ? str : "", NULL);
367: }
368:
369: /*
370: * cfg_getAttributeLDouble() - Get item as long double from config and return value from it
371: *
372: * @cfg = Config root
373: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
374: * @csAttr = Config attribute //{csAttr} = ..., if NULL as *any* attribute
375: * return: value
376: */
377: long double
378: cfg_getAttributeLDouble(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
379: {
380: const char *str = NULL;
381:
382: str = cfg_getAttribute(cfg, csSec, csAttr);
383: return strtold(str ? str : "", NULL);
384: }
385:
386: /*
387: * cfg_loadAttribute() - Get guarded attribute, if not found item return *default value*
388: *
389: * @cfg = Config root
390: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
391: * @csAttr = Config attribute //{csAttr} = ..., if NULL as *any* attribute
392: * @val = Return buffer for item Value //... = {val}
393: * @csDefValue = *Default Value* for return in //{val}, if not found item in config
394: * return: 0 item not found, -1 error or >0 number of copied bytes in //{val}
395: */
396: int
397: cfg_loadAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr,
398: ait_val_t * __restrict val, const char *csDefValue)
399: {
400: struct tagCfg *av;
401: int ret = 0;
402:
403: if (!cfg || !val) {
404: cfg_SetErr(EINVAL, "Invalid argument(s)");
405: return -1;
406: }
407:
408: AIT_INIT_VAL(val);
409: av = _selectAttribute(cfg, csSec, csAttr);
410: if (!av) {
411: /* not found item */
412: if (csDefValue) {
413: AIT_SET_STR(val, csDefValue);
414: ret = AIT_LEN(val);
415: } else
416: AIT_INIT_VAL(val);
417: return ret;
418: }
419:
420: if (AIT_ISEMPTY(&av->cfg_val) || !AIT_ADDR(&av->cfg_val) ||
421: !*AIT_GET_LIKE(&av->cfg_val, char*)) {
422: /* empty value */
423: if (csDefValue) {
424: AIT_SET_STR(val, csDefValue);
425: ret = AIT_LEN(val);
426: } else
427: AIT_INIT_VAL(val);
428: } else {
429: /* copy value */
430: AIT_SET_STR(val, AIT_GET_STR(&av->cfg_val));
431: ret = AIT_LEN(val);
432: }
433:
434: return ret;
435: }
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