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: parse.c,v 1.19 2021/11/26 01:15:03 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 - 2021
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: /*
50: * cfgReadConfig() - Read file and add new item at config root
51: *
52: * @f = File resource
53: * @cfg = Config root
54: * return: -1 error or 0 ok
55: */
56: int
57: cfgReadConfig(FILE *f, cfg_root_t * __restrict cfg)
58: {
59: char line[BUFSIZ], origin[BUFSIZ];
60: struct tagCfg *av = NULL;
61: int flg = 0;
62: char *psAttr, *psVal, szSection[STRSIZ] = { 0 };
63: FILE *ff;
64:
65: if (!f || !cfg) {
66: cfg_SetErr(EINVAL, "Invalid parameter(s)");
67: return -1;
68: }
69:
70: while (!feof(f)) {
71: memset(line, 0, sizeof line);
72: fgets(line, sizeof line - 1, f);
73: #ifdef SUPPORT_USER_EOF
74: /* check for user end-of-file */
75: if (line[0] == '.' && line[1] == '\n')
76: break;
77: #endif
78: if (!(psAttr = strpbrk(line, "\r\n"))) {
79: /* skip line, too long */
80: continue;
81: } else {
82: *psAttr = 0;
83: strlcpy(origin, line, sizeof origin);
84: str_Trim(line);
85: }
86:
87: if (flg) {
88: /* continues line */
89: if (!av)
90: continue;
91: else
92: psAttr = line + strlen(line) - 1;
93: if (*psAttr == '\\')
94: *psAttr = 0;
95: else
96: flg = 0;
97: /* concat line to value */
98: AIT_SET_STRCAT(&av->cfg_val, line);
99: if (!flg && AIT_ADDR(&av->cfg_val))
100: str_Unquot((char*) AIT_GET_STR(&av->cfg_val));
101:
102: /* read include file */
103: if (!flg && AIT_ADDR(&av->cfg_val) &&
104: *AIT_GET_STR(&av->cfg_attr) == '%' &&
105: !strcmp(AIT_GET_STR(&av->cfg_attr), "%include")) {
106: ff = fopen(AIT_GET_STR(&av->cfg_val), "r");
107: if (ff) {
108: cfgReadConfig(ff, cfg);
109: fclose(ff);
110: } else
111: EDEBUG(7, "Error:: Can't open %s file",
112: AIT_GET_STR(&av->cfg_val));
113: }
114: continue;
115: }
116:
117: /* *NEW PAIR* alloc new pair element */
118: av = e_malloc(sizeof(struct tagCfg));
119: if (!av) {
120: cfg_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
121: return -1;
122: } else {
123: memset(av, 0, sizeof(struct tagCfg));
124: CFG_RC_LOCK(cfg);
125: TAILQ_INSERT_TAIL(cfg, av, cfg_next);
126: CFG_RC_UNLOCK(cfg);
127: }
128:
129: /* check for comment or empty line */
130: if (!*line || *line == '#' || *line == ';') {
131: AIT_SET_STR(&av->cfg_val, line);
132: continue;
133: }
134:
135: /* check for continues line */
136: psAttr = line + (*line ? strlen(line) : 1) - 1;
137: if (*psAttr == '\\') {
138: *psAttr = 0;
139: flg = 1;
140: }
141:
142: /* section */
143: if (*line == '[') {
144: psAttr = line + strlen(line) - 1;
145: if (*psAttr == ']') {
146: *psAttr = 0;
147: flg = 0;
148: strlcpy(szSection, line + 1, sizeof szSection);
149: AIT_SET_STR(&av->cfg_sec, line);
150: } else
151: EDEBUG(7, "Ignore section '%s' ... not found ']'", line);
152: continue;
153: }
154: /* parse pair */
155: if (!(psAttr = strchr(line, '='))) {
156: AIT_SET_STR(&av->cfg_val, origin);
157: EDEBUG(7, "Ignore a/v '%s' ... not found '='", line);
158: continue;
159: } else {
160: *psAttr = 0;
161: psVal = psAttr + 1;
162: psAttr = line;
163: }
164:
165: /* if exists, added section name to element */
166: if (*szSection) {
167: AIT_SET_STR(&av->cfg_sec, szSection);
168: AIT_KEY(&av->cfg_sec) = crcFletcher16(AIT_GET_LIKE(&av->cfg_sec, u_short*),
169: E_ALIGN(AIT_LEN(&av->cfg_sec) - 1, 2) / 2);
170: }
171:
172: str_RTrim(psAttr);
173: str_LTrim(psVal);
174: if (!flg)
175: str_Unquot(psVal);
176: AIT_SET_STR(&av->cfg_val, psVal);
177: AIT_SET_STR(&av->cfg_attr, psAttr);
178: AIT_KEY(&av->cfg_attr) = crcFletcher16(AIT_GET_LIKE(&av->cfg_attr, u_short*),
179: E_ALIGN(AIT_LEN(&av->cfg_attr) - 1, 2) / 2);
180:
181: CFG_RC_LOCK(cfg);
182: RB_INSERT(tagRC, cfg, av);
183: CFG_RC_UNLOCK(cfg);
184:
185: /* read include file */
186: if (!flg && *AIT_GET_STR(&av->cfg_attr) == '%' &&
187: !strcmp(AIT_GET_STR(&av->cfg_attr), "%include")) {
188: ff = fopen(AIT_GET_STR(&av->cfg_val), "r");
189: if (ff) {
190: cfgReadConfig(ff, cfg);
191: fclose(ff);
192: } else
193: EDEBUG(7, "Error:: Can't open %s file",
194: AIT_GET_STR(&av->cfg_val));
195: }
196: }
197:
198: return 0;
199: }
200:
201: /*
202: * cfgWriteConfig() - Write config from memory
203: *
204: * @f = File handle
205: * @cfg = Config root
206: * @whitespace = Additional whitespace characters to file
207: * return: -1 error or 0 ok
208: */
209: int
210: cfgWriteConfig(FILE *f, cfg_root_t * __restrict cfg, int whitespace)
211: {
212: struct tagCfg *av;
213: char line[BUFSIZ] = { 0 }, szSection[STRSIZ] = { [0 ... STRSIZ - 1] = 0 };
214:
215: if (!f || !cfg) {
216: cfg_SetErr(EINVAL, "Invalid parameter(s)");
217: return -1;
218: }
219:
220: CFG_RC_LOCK(cfg);
221: RB_FOREACH(av, tagRC, cfg) {
222: /* empty lines or comment */
223: if (AIT_ISEMPTY(&av->cfg_attr)) {
224: if (AIT_ISEMPTY(&av->cfg_val))
225: continue;
226: strlcpy(line, AIT_GET_STR(&av->cfg_val), sizeof line);
227: goto skip_sec;
228: }
229:
230: /* section [] */
231: if (!AIT_ISEMPTY(&av->cfg_sec) && AIT_ADDR(&av->cfg_sec) &&
232: strcmp(AIT_GET_STRZ(&av->cfg_sec), szSection)) {
233: strlcpy(szSection, AIT_GET_STR(&av->cfg_sec), sizeof szSection);
234: if (!cfg_Write(f, "\n[%s]\n", AIT_GET_STR(&av->cfg_sec))) {
235: LOGERR;
236: CFG_RC_UNLOCK(cfg);
237: return -1;
238: }
239: } else if (AIT_ISEMPTY(&av->cfg_sec) && *szSection) {
240: memset(szSection, 0, sizeof szSection);
241: if (!cfg_Write(f, "\n[]\n")) {
242: LOGERR;
243: CFG_RC_UNLOCK(cfg);
244: return -1;
245: }
246: }
247:
248: /* build line */
249: memset(line, 0, sizeof line);
250: if (!AIT_ISEMPTY(&av->cfg_attr) && AIT_TYPE(&av->cfg_attr) == string) {
251: strlcpy(line, AIT_GET_STRZ(&av->cfg_attr), sizeof line);
252: if (whitespace)
253: strlcat(line, " = ", sizeof line);
254: else
255: strlcat(line, "=", sizeof line);
256: }
257: if (!AIT_ISEMPTY(&av->cfg_val) && AIT_TYPE(&av->cfg_val) == string)
258: strlcat(line, AIT_GET_STRZ(&av->cfg_val), sizeof line);
259: skip_sec:
260: /* write */
261: if (!cfg_Write(f, "%s\n", line)) {
262: LOGERR;
263: CFG_RC_UNLOCK(cfg);
264: return -1;
265: }
266: }
267: CFG_RC_UNLOCK(cfg);
268:
269: return 0;
270: }
271:
272: /*
273: * cfgWriteConfigRaw() - Write config from memory by list
274: *
275: * @f = File handle
276: * @cfg = Config root
277: * @whitespace = Additional whitespace characters to file
278: * return: -1 error or 0 ok
279: */
280: int
281: cfgWriteConfigRaw(FILE *f, cfg_root_t * __restrict cfg, int whitespace)
282: {
283: struct tagCfg *av, *nxt;
284: char line[BUFSIZ] = { 0 }, szSection[STRSIZ] = { [0 ... STRSIZ - 1] = 0 };
285:
286: if (!f || !cfg) {
287: cfg_SetErr(EINVAL, "Invalid parameter(s)");
288: return -1;
289: }
290:
291: CFG_RC_LOCK(cfg);
292: TAILQ_FOREACH_SAFE(av, cfg, cfg_next, nxt) {
293: /* empty lines or comment */
294: if (AIT_ISEMPTY(&av->cfg_attr)) {
295: if (AIT_ISEMPTY(&av->cfg_val))
296: continue;
297: strlcpy(line, AIT_GET_STR(&av->cfg_val), sizeof line);
298: goto skip_sec;
299: }
300:
301: /* section [] */
302: if (!AIT_ISEMPTY(&av->cfg_sec) && AIT_ADDR(&av->cfg_sec) &&
303: strcmp(AIT_GET_STRZ(&av->cfg_sec), szSection)) {
304: strlcpy(szSection, AIT_GET_STR(&av->cfg_sec), sizeof szSection);
305: if (!cfg_Write(f, "\n[%s]\n", AIT_GET_STR(&av->cfg_sec))) {
306: LOGERR;
307: CFG_RC_UNLOCK(cfg);
308: return -1;
309: }
310: } else if (AIT_ISEMPTY(&av->cfg_sec) && *szSection) {
311: memset(szSection, 0, sizeof szSection);
312: if (!cfg_Write(f, "\n[]\n")) {
313: LOGERR;
314: CFG_RC_UNLOCK(cfg);
315: return -1;
316: }
317: }
318:
319: /* build line */
320: memset(line, 0, sizeof line);
321: if (!AIT_ISEMPTY(&av->cfg_attr) && AIT_TYPE(&av->cfg_attr) == string) {
322: strlcpy(line, AIT_GET_STRZ(&av->cfg_attr), sizeof line);
323: if (whitespace)
324: strlcat(line, " = ", sizeof line);
325: else
326: strlcat(line, "=", sizeof line);
327: }
328: if (!AIT_ISEMPTY(&av->cfg_val) && AIT_TYPE(&av->cfg_val) == string)
329: strlcat(line, AIT_GET_STRZ(&av->cfg_val), sizeof line);
330: skip_sec:
331: /* write */
332: if (!cfg_Write(f, "%s\n", line)) {
333: LOGERR;
334: CFG_RC_UNLOCK(cfg);
335: return -1;
336: }
337: }
338: CFG_RC_UNLOCK(cfg);
339:
340: return 0;
341: }
342: /*
343: * cfgConcatConfig() - Concat two configs into one
344: *
345: * @cfg = Config root
346: * @add_cfg = Concated config will be destroy after merge
347: * return: -1 error or 0 ok
348: */
349: int
350: cfgConcatConfig(cfg_root_t * __restrict cfg, cfg_root_t * __restrict add_cfg)
351: {
352: struct tagCfg *item;
353:
354: if (!cfg || !add_cfg)
355: return -1;
356:
357: CFG_RC_LOCK(add_cfg);
358: CFG_RC_LOCK(cfg);
359:
360: /* concat lists & red-black trees */
361: TAILQ_FOREACH(item, add_cfg, cfg_next) {
362: TAILQ_INSERT_TAIL(cfg, item, cfg_next);
363: RB_INSERT(tagRC, cfg, item);
364: }
365:
366: CFG_RC_UNLOCK(cfg);
367:
368: TAILQ_INIT(add_cfg);
369: RB_INIT(add_cfg);
370: CFG_RC_UNLOCK(add_cfg);
371: pthread_mutex_destroy(&add_cfg->rc_mtx);
372: return 0;
373: }
374:
375: /*
376: * cfgMergeConfig() - Marge two list in one cfg and destroy add_cfg
377: *
378: * @cfg = Config root of main list
379: * @add_cfg = Merged config will be destroy after merge
380: * return: -1 error or 0 ok
381: */
382: int
383: cfgMergeConfig(cfg_root_t * __restrict cfg, cfg_root_t * __restrict add_cfg)
384: {
385: struct tagCfg *item, *merge, *add_next, *next;
386: int flg;
387:
388: if (!cfg || !add_cfg)
389: return -1;
390:
391: CFG_RC_LOCK(add_cfg);
392: CFG_RC_LOCK(cfg);
393:
394: /* merge lists */
395: TAILQ_FOREACH_SAFE(item, add_cfg, cfg_next, add_next) {
396: flg = 0;
397: TAILQ_FOREACH_SAFE(merge, cfg, cfg_next, next) {
398: if (AIT_ISEMPTY(&merge->cfg_sec) && AIT_ISEMPTY(&item->cfg_sec)) {
399: flg = 1;
400: break;
401: }
402: if (!AIT_ISEMPTY(&merge->cfg_sec) && !AIT_ISEMPTY(&item->cfg_sec) &&
403: AIT_ADDR(&merge->cfg_sec) && AIT_ADDR(&item->cfg_sec) &&
404: !strcmp(AIT_GET_STR(&merge->cfg_sec), AIT_GET_STR(&item->cfg_sec))) {
405: flg = 1;
406: break;
407: }
408: }
409:
410: if (!flg)
411: TAILQ_INSERT_TAIL(cfg, item, cfg_next);
412: else
413: TAILQ_INSERT_AFTER(cfg, merge, item, cfg_next);
414: RB_INSERT(tagRC, cfg, item);
415: }
416:
417: CFG_RC_UNLOCK(cfg);
418:
419: TAILQ_INIT(add_cfg);
420: RB_INIT(add_cfg);
421: CFG_RC_UNLOCK(add_cfg);
422: pthread_mutex_destroy(&add_cfg->rc_mtx);
423: return 0;
424: }
425:
426: /*
427: * cfgReadLines() - Read custom lines and add new item at config root
428: *
429: * @f = File resource
430: * @delim = Custom delimiter, if =NULL default is '='
431: * @end = Custom user end of file, if =NULL default is EOF
432: * @cfg = Config root
433: * return: -1 error or 0 ok
434: */
435: int
436: cfgReadLines(FILE *f, const char *delim, const char *end, cfg_root_t * __restrict cfg)
437: {
438: char line[BUFSIZ];
439: struct tagCfg *d, *av = NULL;
440: char *p, *psSec, *psAttr, *psVal;
441:
442: if (!cfg)
443: return -1;
444: if (!delim)
445: delim = ATR_LINES_DELIM;
446:
447: while (!feof(f)) {
448: psSec = psAttr = psVal = NULL;
449: memset(line, 0, sizeof line);
450: fgets(line, sizeof line - 1, f);
451: /* check for user end-of-file */
452: if (strspn(line, end))
453: break;
454:
455: if (!(psAttr = strpbrk(line, "\r\n"))) {
456: /* skip line, too long */
457: continue;
458: } else {
459: *psAttr = 0;
460: str_Trim(line);
461: if (!*line)
462: continue;
463: }
464:
465: if (!av_MakeExt(line, delim, &p, &psVal))
466: continue;
467: else {
468: str_RTrim(p);
469: str_LTrim(psVal);
470: }
471: if (!av_MakeExt(p, SEC_LINES_DELIM, &psSec, &psAttr))
472: psAttr = p;
473:
474: /* *NEW PAIR* alloc new pair element */
475: av = e_malloc(sizeof(struct tagCfg));
476: if (!av) {
477: LOGERR;
478: return -1;
479: } else
480: memset(av, 0, sizeof(struct tagCfg));
481:
482: if (psSec) {
483: AIT_SET_STR(&av->cfg_sec, psSec);
484: AIT_KEY(&av->cfg_sec) = crcFletcher16(AIT_GET_LIKE(&av->cfg_sec, u_short*),
485: E_ALIGN(AIT_LEN(&av->cfg_sec) - 1, 2) / 2);
486: }
487: if (psVal)
488: AIT_SET_STR(&av->cfg_val, psVal);
489: AIT_SET_STR(&av->cfg_attr, psAttr);
490: AIT_KEY(&av->cfg_attr) = crcFletcher16(AIT_GET_LIKE(&av->cfg_attr, u_short*),
491: E_ALIGN(AIT_LEN(&av->cfg_attr) - 1, 2) / 2);
492:
493: CFG_RC_LOCK(cfg);
494: /* find & delete duplicates */
495: if ((d = RB_FIND(tagRC, cfg, av))) {
496: RB_REMOVE(tagRC, cfg, d);
497: TAILQ_REMOVE(cfg, d, cfg_next);
498:
499: AIT_FREE_VAL(&d->cfg_val);
500: AIT_FREE_VAL(&d->cfg_attr);
501: AIT_FREE_VAL(&d->cfg_sec);
502: e_free(d);
503: }
504:
505: TAILQ_INSERT_TAIL(cfg, av, cfg_next);
506: RB_INSERT(tagRC, cfg, av);
507: CFG_RC_UNLOCK(cfg);
508: }
509:
510: return 0;
511: }
512:
513: /*
514: * cfgWriteLines() - Write custom lines and export data to variable
515: *
516: * @f = File resource
517: * @delim = Custom delimiter, if =NULL default is '='
518: * @eol = End of line string, if =NULL default is "\n"
519: * @section = Export only section, if =NULL default is all
520: * @cfg = Config root
521: * return: =NULL error or !=NULL exported data, must be free after use with ait_freeVar()
522: */
523: ait_val_t *
524: cfgWriteLines(FILE *f, const char *delim, const char *eol, const char *section, cfg_root_t * __restrict cfg)
525: {
526: ait_val_t *v = NULL;
527: struct tagCfg *av;
528:
529: if (!cfg)
530: return NULL;
531: if (!delim)
532: delim = ATR_LINES_DELIM;
533: if (!eol)
534: eol = EOL_LINES_DELIM;
535: if (!(v = ait_allocVar())) {
536: cfg_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
537: return NULL;
538: } else
539: AIT_INIT_VAL2(v, string);
540:
541: TAILQ_FOREACH(av, cfg, cfg_next) {
542: if (section) {
543: if (!AIT_ISEMPTY(&av->cfg_sec) && *section)
544: continue;
545: if (strcmp(section, AIT_GET_STRZ(&av->cfg_sec)))
546: continue;
547: }
548:
549: if (!AIT_ISEMPTY(&av->cfg_sec)) {
550: AIT_SET_STRCAT(v, AIT_GET_STR(&av->cfg_sec));
551: AIT_SET_STRCAT(v, SEC_LINES_DELIM);
552: }
553: if (!AIT_ISEMPTY(&av->cfg_attr)) {
554: AIT_SET_STRCAT(v, AIT_GET_STR(&av->cfg_attr));
555: AIT_SET_STRCAT(v, delim);
556: }
557: if (!AIT_ISEMPTY(&av->cfg_val))
558: AIT_SET_STRCAT(v, AIT_GET_STR(&av->cfg_val));
559: AIT_SET_STRCAT(v, eol);
560: }
561:
562: if (f)
563: fputs(AIT_GET_STR(v), f);
564: return v;
565: }
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