Annotation of libaitcfg/src/queue.c, revision 1.22.2.1
1.2 misho 1: /*************************************************************************
2: * (C) 2008 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
3: * by Michael Pounov <misho@openbsd-bg.org>
4: *
5: * $Author: misho $
1.22.2.1! misho 6: * $Id: queue.c,v 1.22 2026/10/05 16:44:48 misho Exp $
1.2 misho 7: *
1.6 misho 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:
1.22 misho 15: Copyright 2004 - 2026
1.6 misho 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: */
1.1 misho 46: #include "global.h"
47:
48:
1.7 misho 49: static inline struct tagCfg *
1.22 misho 50: _selectAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr, int *find)
1.1 misho 51: {
1.19 misho 52: struct tagCfg fav, *c, *n;
1.1 misho 53:
54: if (!cfg)
55: return NULL;
1.7 misho 56: else
57: memset(&fav, 0, sizeof fav);
1.22 misho 58: if (find)
59: *find = 0;
1.1 misho 60:
1.7 misho 61: if (csSec && *csSec)
62: AIT_KEY(&fav.cfg_sec) = crcFletcher16((u_short*) csSec,
1.12 misho 63: E_ALIGN(strlen(csSec), 2) / 2);
1.7 misho 64: if (csAttr)
65: AIT_KEY(&fav.cfg_attr) = crcFletcher16((u_short*) csAttr,
1.12 misho 66: E_ALIGN(strlen(csAttr), 2) / 2);
1.7 misho 67:
1.19 misho 68: if (!csAttr) {
69: c = RB_NFIND(tagRC, cfg, &fav);
70: if (!c)
71: return NULL; /* not found */
72: if (csSec && !AIT_ISEMPTY(&c->cfg_sec) &&
73: strcmp(csSec, AIT_GET_STR(&c->cfg_sec)))
74: TAILQ_FOREACH_SAFE(c, cfg, cfg_next, n) {
75: if (!AIT_ISEMPTY(&c->cfg_sec) &&
76: !strcmp(csSec, AIT_GET_STR(&c->cfg_sec)))
77: break;
78: }
1.22 misho 79: if (find)
80: *find = -1;
1.19 misho 81: return c;
82: } else {
1.10 misho 83: c = RB_FIND(tagRC, cfg, &fav);
84: if (!c)
85: return NULL; /* not found */
1.22.2.1! misho 86: if ((!csSec && AIT_ISEMPTY(&c->cfg_sec)) || (csSec && !*csSec && AIT_ISEMPTY(&c->cfg_sec)) ||
! 87: (csSec && !AIT_ISEMPTY(&c->cfg_sec) && !strcmp(csSec, AIT_GET_STR(&c->cfg_sec)))) {
1.22 misho 88: if (!AIT_ISEMPTY(&c->cfg_attr) && !strcmp(csAttr, AIT_GET_STR(&c->cfg_attr))) {
89: if (find)
90: *find = 1;
91: return c; /* FOUND! */
1.19 misho 92: }
1.22.2.1! misho 93: }
1.19 misho 94: /* if cannot find right attribute */
95: TAILQ_FOREACH_SAFE(c, cfg, cfg_next, n) {
1.22.2.1! misho 96: if ((!csSec && AIT_ISEMPTY(&c->cfg_sec)) ||
! 97: (csSec && !*csSec && AIT_ISEMPTY(&c->cfg_sec)) ||
! 98: (csSec && !AIT_ISEMPTY(&c->cfg_sec) &&
! 99: !strcmp(csSec, AIT_GET_STR(&c->cfg_sec)))) {
1.19 misho 100: if (!AIT_ISEMPTY(&c->cfg_attr) && csAttr &&
1.22 misho 101: !strcmp(csAttr, AIT_GET_STR(&c->cfg_attr))) {
102: if (find)
103: *find = 2;
1.19 misho 104: return c; /* FOUND! */
1.22 misho 105: }
1.22.2.1! misho 106: }
1.19 misho 107: }
1.10 misho 108: return NULL; /* not found */
109: }
1.1 misho 110: }
111:
1.7 misho 112: /* --------------------------------------------------------------- */
1.18 misho 113:
114: /*
115: * cfg_dumpCfg() - dump config data
116: *
117: * @cfg = Config root
118: * return: none
119: */
120: void
121: cfg_dumpCfg(cfg_root_t * __restrict cfg)
122: {
123: struct tagCfg *r, *c, *ctmp, *q, *qtmp;
1.20 misho 124: int syn = 0;
1.18 misho 125:
126: r = RB_ROOT(cfg);
127: printf("ROOT:: KEY=%.8x [%s] %s=%s\n", ((AIT_KEY(&r->cfg_sec) << 15) | AIT_KEY(&r->cfg_attr)),
128: AIT_ADDR(&r->cfg_sec), AIT_ADDR(&r->cfg_attr), AIT_ADDR(&r->cfg_val));
129:
130: RB_FOREACH_SAFE(c, tagRC, cfg, ctmp) {
131: syn ^= syn;
132: TAILQ_FOREACH_SAFE(q, cfg, cfg_next, qtmp) {
133: if (c == q) {
134: syn = 42;
135: break;
136: }
137: }
138:
139: printf("%s KEY=%.8x [%s] %s=%s sync=%d\n", c == r ? "*" : "",
140: ((AIT_KEY(&c->cfg_sec) << 15) | AIT_KEY(&c->cfg_attr)),
141: AIT_ADDR(&c->cfg_sec), AIT_ADDR(&c->cfg_attr), AIT_ADDR(&c->cfg_val), syn);
142: }
143: }
1.1 misho 144:
145: /*
1.15 misho 146: * cfg_getSection() - Get entire section attributes into array
147: *
148: * @cfg = Config root
149: * @csSec = Config section //[{csSec}]
150: * return: NULL not found or !=NULL allocated array, must free with array_Destroy() after use!
151: */
152: array_t *
153: cfg_getSection(cfg_root_t * __restrict cfg, const char *csSec)
154: {
155: array_t *arr = NULL;
156: struct tagCfg *av, fav;
157:
158: if (!cfg) {
159: cfg_SetErr(EINVAL, "Invalid argument(s)");
160: return NULL;
161: } else
162: memset(&fav, 0, sizeof fav);
163: if (csSec && !*csSec)
164: csSec = NULL;
165:
166: if (csSec && *csSec)
167: AIT_KEY(&fav.cfg_sec) = crcFletcher16((u_short*) csSec,
168: E_ALIGN(strlen(csSec), 2) / 2);
169:
1.17 misho 170: arr = array_Init(0);
1.15 misho 171: if (!arr) {
172: cfg_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
173: return NULL;
1.17 misho 174: }
1.15 misho 175:
1.17 misho 176: TAILQ_FOREACH(av, cfg, cfg_next)
177: if (AIT_KEY(&av->cfg_sec) == AIT_KEY(&fav.cfg_sec)) {
178: if (!csSec) {
179: if (AIT_ISEMPTY(&av->cfg_sec))
180: array_Push(arr, av, 0);
181: } else {
182: if (!AIT_ISEMPTY(&av->cfg_sec) &&
183: !strcmp(AIT_GET_STR(&av->cfg_sec), csSec))
184: array_Push(arr, av, 0);
185: }
1.15 misho 186: }
187:
1.17 misho 188: if (!array_Size(arr))
189: array_Destroy(&arr);
1.15 misho 190:
191: return arr;
192: }
193:
194: /*
1.21 misho 195: * cfg_delSection() - Delete entire section
196: *
197: * @cfg = Config root
198: * @csSec = Config section //[{csSec}]
199: * return: -1 error, 0 nothing deleted or >0 deleted attributes
200: */
201: int
202: cfg_delSection(cfg_root_t * __restrict cfg, const char *csSec)
203: {
204: int ret = 0;
205: array_t *arr = NULL;
206: struct tagCfg *av;
207: register int i;
208:
209: if (!cfg) {
210: cfg_SetErr(EINVAL, "Invalid argument(s)");
211: return -1;
212: }
213: if (csSec && !*csSec)
214: csSec = NULL;
215:
216: arr = cfg_getSection(cfg, csSec);
217: if (!arr)
218: return ret;
219: for (i = 0; i < array_Size(arr); i++)
220: if ((av = array(arr, i, struct tagCfg*)) && AIT_ADDR(&av->cfg_attr))
221: if (cfg_unsetAttribute(cfg, csSec, AIT_GET_STR(&av->cfg_attr)) > 0)
222: ret++;
223: array_Destroy(&arr);
224: return ret;
225: }
226:
227: /*
1.7 misho 228: * cfg_findAttribute() - Find attribute position in config file
229: *
230: * @cfg = Config root
1.1 misho 231: * @csSec = Config section //[{csSec}]
1.19 misho 232: * @csAttr = Config attribute //{csAttr} = ...
1.7 misho 233: * return: 0 not found item, -1 error or >0 position in list
234: */
1.12 misho 235: int
1.7 misho 236: cfg_findAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
1.1 misho 237: {
1.19 misho 238: struct tagCfg *av, *n;
1.1 misho 239: register int cx = 0;
240:
1.15 misho 241: if (!cfg) {
1.7 misho 242: cfg_SetErr(EINVAL, "Invalid argument(s)");
1.1 misho 243: return -1;
1.19 misho 244: }
1.1 misho 245:
1.19 misho 246: TAILQ_FOREACH_SAFE(av, cfg, cfg_next, n) {
247: ++cx;
1.7 misho 248:
1.19 misho 249: if ((!csSec && AIT_ISEMPTY(&av->cfg_sec)) ||
250: (csSec && !AIT_ISEMPTY(&av->cfg_sec) &&
251: !strcmp(csSec, AIT_GET_STR(&av->cfg_sec))))
252: if (!AIT_ISEMPTY(&av->cfg_attr) && csAttr &&
253: !strcmp(csAttr, AIT_GET_STR(&av->cfg_attr)))
254: return cx;
1.1 misho 255: }
256:
257: return 0;
258: }
259:
260: /*
1.7 misho 261: * cfg_unsetAttribute() - Unset item from config and free resources
262: *
263: * @cfg = Config root
1.1 misho 264: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
1.19 misho 265: * @csAttr = Config attribute //{csAttr} = ...
1.7 misho 266: * return: 0 item not found, -1 error or 1 removed item
267: */
268: int
269: cfg_unsetAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
1.1 misho 270: {
1.22 misho 271: struct tagCfg *av, *n;
272: int find;
1.1 misho 273:
1.15 misho 274: if (!cfg)
1.1 misho 275: return -1;
276:
1.22 misho 277: av = _selectAttribute(cfg, csSec, csAttr, &find);
1.1 misho 278: if (!av)
279: return 0;
280:
1.22 misho 281: if (find == 1) {
282: CFG_RC_LOCK(cfg);
283: RB_REMOVE(tagRC, cfg, av);
284: TAILQ_REMOVE(cfg, av, cfg_next);
285: CFG_RC_UNLOCK(cfg);
286: } else {
287: CFG_RC_LOCK(cfg);
288: TAILQ_REMOVE(cfg, av, cfg_next);
289: CFG_RC_UNLOCK(cfg);
290: }
1.7 misho 291:
292: AIT_FREE_VAL(&av->cfg_val);
293: AIT_FREE_VAL(&av->cfg_attr);
294: AIT_FREE_VAL(&av->cfg_sec);
1.12 misho 295: e_free(av);
1.22 misho 296:
297: if (find == 1) {
298: /* if we have duplicated key then update tree */
299: TAILQ_FOREACH_SAFE(av, cfg, cfg_next, n) {
300: if ((!csSec && AIT_ISEMPTY(&av->cfg_sec)) ||
301: (csSec && !AIT_ISEMPTY(&av->cfg_sec) &&
302: !strcmp(csSec, AIT_GET_STR(&av->cfg_sec))))
303: if (!AIT_ISEMPTY(&av->cfg_attr) && csAttr &&
304: !strcmp(csAttr, AIT_GET_STR(&av->cfg_attr))) {
305: CFG_RC_LOCK(cfg);
306: RB_INSERT(tagRC, cfg, av);
307: CFG_RC_UNLOCK(cfg);
308: break;
309: }
310: }
311: }
312:
1.7 misho 313: return 1;
1.1 misho 314: }
315:
316: /*
1.7 misho 317: * cfg_setAttribute() - Set item in config or adding new item if not exists
318: *
319: * @cfg = Config root
1.1 misho 320: * @csSec = Config section //[{csSec}], if NULL set in *default* section
1.7 misho 321: * @csAttr = Config attribute //{csAttr} = ...
1.1 misho 322: * @csVal = Config value //... = {csVal} to setup
1.7 misho 323: * return: 0 nothing changed, -1 error, 1 found and updated item or 2 added new item
324: */
325: int
326: cfg_setAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr, const char *csVal)
1.1 misho 327: {
1.7 misho 328: struct tagCfg *av, *section;
1.22 misho 329: int find;
1.1 misho 330:
331: if (!cfg || !csAttr)
332: return -1;
333:
1.22 misho 334: av = _selectAttribute(cfg, csSec, csAttr, &find);
1.1 misho 335: if (!av) {
1.7 misho 336: /* adding new element */
1.22 misho 337: section = _selectAttribute(cfg, csSec, NULL, &find);
1.1 misho 338:
1.12 misho 339: av = e_malloc(sizeof(struct tagCfg));
1.1 misho 340: if (!av) {
341: LOGERR;
342: return -1;
343: } else {
1.7 misho 344: memset(av, 0, sizeof(struct tagCfg));
1.1 misho 345:
1.7 misho 346: CFG_RC_LOCK(cfg);
347: if (!section)
1.14 misho 348: TAILQ_INSERT_TAIL(cfg, av, cfg_next);
1.7 misho 349: else
1.14 misho 350: TAILQ_INSERT_BEFORE(section, av, cfg_next);
1.7 misho 351: CFG_RC_UNLOCK(cfg);
1.1 misho 352: }
1.7 misho 353:
1.1 misho 354: if (csSec && *csSec) {
1.7 misho 355: AIT_SET_STR(&av->cfg_sec, csSec);
356: AIT_KEY(&av->cfg_sec) = crcFletcher16(AIT_GET_LIKE(&av->cfg_sec, u_short*),
1.12 misho 357: E_ALIGN(AIT_LEN(&av->cfg_sec) - 1, 2) / 2);
1.1 misho 358: }
1.7 misho 359: AIT_SET_STR(&av->cfg_val, csVal ? csVal : "");
360: AIT_SET_STR(&av->cfg_attr, csAttr);
361: AIT_KEY(&av->cfg_attr) = crcFletcher16(AIT_GET_LIKE(&av->cfg_attr, u_short*),
1.12 misho 362: E_ALIGN(AIT_LEN(&av->cfg_attr) - 1, 2) / 2);
1.7 misho 363:
364: CFG_RC_LOCK(cfg);
365: RB_INSERT(tagRC, cfg, av);
366: CFG_RC_UNLOCK(cfg);
1.1 misho 367: return 2;
368: }
369:
1.10 misho 370: if (csVal && AIT_ADDR(&av->cfg_val) &&
371: strcmp((char*) csVal, (char*) AIT_GET_STR(&av->cfg_val))) {
1.7 misho 372: /* Update element */
373: AIT_FREE_VAL(&av->cfg_val);
374: AIT_SET_STR(&av->cfg_val, csVal);
1.1 misho 375: return 1;
376: }
377:
1.7 misho 378: /* Nothing happens ... found & values is equal! */
1.1 misho 379: return 0;
380: }
381:
382: /*
1.7 misho 383: * cfg_getAttribute() - Get item from config and return value from it
384: *
385: * @cfg = Config root
1.1 misho 386: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
1.19 misho 387: * @csAttr = Config attribute //{csAttr} = ...
1.7 misho 388: * return: NULL item not found or null parameters, !=NULL value const string
389: */
1.12 misho 390: const char *
1.7 misho 391: cfg_getAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
1.1 misho 392: {
1.7 misho 393: struct tagCfg *av;
1.22 misho 394: int find;
1.1 misho 395:
1.15 misho 396: if (!cfg)
1.1 misho 397: return NULL;
398:
1.22 misho 399: av = _selectAttribute(cfg, csSec, csAttr, &find);
1.1 misho 400: if (!av)
401: return NULL;
402:
1.7 misho 403: return AIT_GET_STR(&av->cfg_val);
1.4 misho 404: }
405:
1.1 misho 406: /*
1.16 misho 407: * cfg_getAttributeLong() - Get item as long from config and return value from it
408: *
409: * @cfg = Config root
410: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
1.19 misho 411: * @csAttr = Config attribute //{csAttr} = ...
1.16 misho 412: * return: value
413: */
414: long
415: cfg_getAttributeLong(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
416: {
417: const char *str = NULL;
418:
419: str = cfg_getAttribute(cfg, csSec, csAttr);
420: return strtol(str ? str : "", NULL, 0);
421: }
422:
423: /*
424: * cfg_getAttributeLLong() - Get item as long long from config and return value from it
425: *
426: * @cfg = Config root
427: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
1.19 misho 428: * @csAttr = Config attribute //{csAttr} = ...
1.16 misho 429: * return: value
430: */
431: long long
432: cfg_getAttributeLLong(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
433: {
434: const char *str = NULL;
435:
436: str = cfg_getAttribute(cfg, csSec, csAttr);
437: return strtoll(str ? str : "", NULL, 0);
438: }
439:
440: /*
441: * cfg_getAttributeDouble() - Get item as double from config and return value from it
442: *
443: * @cfg = Config root
444: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
1.19 misho 445: * @csAttr = Config attribute //{csAttr} = ...
1.16 misho 446: * return: value
447: */
448: double
449: cfg_getAttributeDouble(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
450: {
451: const char *str = NULL;
452:
453: str = cfg_getAttribute(cfg, csSec, csAttr);
454: return strtod(str ? str : "", NULL);
455: }
456:
457: /*
458: * cfg_getAttributeLDouble() - Get item as long double from config and return value from it
459: *
460: * @cfg = Config root
461: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
1.19 misho 462: * @csAttr = Config attribute //{csAttr} = ...
1.16 misho 463: * return: value
464: */
465: long double
466: cfg_getAttributeLDouble(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
467: {
468: const char *str = NULL;
469:
470: str = cfg_getAttribute(cfg, csSec, csAttr);
471: return strtold(str ? str : "", NULL);
472: }
473:
474: /*
1.7 misho 475: * cfg_loadAttribute() - Get guarded attribute, if not found item return *default value*
476: *
477: * @cfg = Config root
1.1 misho 478: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
1.19 misho 479: * @csAttr = Config attribute //{csAttr} = ...
1.7 misho 480: * @val = Return buffer for item Value //... = {val}
481: * @csDefValue = *Default Value* for return in //{val}, if not found item in config
482: * return: 0 item not found, -1 error or >0 number of copied bytes in //{val}
483: */
484: int
485: cfg_loadAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr,
486: ait_val_t * __restrict val, const char *csDefValue)
1.1 misho 487: {
1.7 misho 488: struct tagCfg *av;
1.1 misho 489: int ret = 0;
1.22 misho 490: int find;
1.1 misho 491:
1.15 misho 492: if (!cfg || !val) {
1.7 misho 493: cfg_SetErr(EINVAL, "Invalid argument(s)");
1.1 misho 494: return -1;
1.7 misho 495: }
1.1 misho 496:
1.9 misho 497: AIT_INIT_VAL(val);
1.22 misho 498: av = _selectAttribute(cfg, csSec, csAttr, &find);
1.1 misho 499: if (!av) {
1.7 misho 500: /* not found item */
1.1 misho 501: if (csDefValue) {
1.7 misho 502: AIT_SET_STR(val, csDefValue);
503: ret = AIT_LEN(val);
1.8 misho 504: } else
505: AIT_INIT_VAL(val);
1.1 misho 506: return ret;
507: }
508:
1.10 misho 509: if (AIT_ISEMPTY(&av->cfg_val) || !AIT_ADDR(&av->cfg_val) ||
510: !*AIT_GET_LIKE(&av->cfg_val, char*)) {
1.7 misho 511: /* empty value */
1.1 misho 512: if (csDefValue) {
1.7 misho 513: AIT_SET_STR(val, csDefValue);
514: ret = AIT_LEN(val);
1.8 misho 515: } else
516: AIT_INIT_VAL(val);
1.1 misho 517: } else {
1.7 misho 518: /* copy value */
519: AIT_SET_STR(val, AIT_GET_STR(&av->cfg_val));
520: ret = AIT_LEN(val);
1.1 misho 521: }
522:
523: return ret;
524: }
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