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 1.13 2014/01/29 23:48:34 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 - 2014
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 void
50: _invertQueue(cfg_root_t * __restrict cfg)
51: {
52: struct tagCfg *item, *next, *prev = NULL;
53:
54: SLIST_FOREACH_SAFE(item, cfg, cfg_next, next) {
55: item->cfg_next.sle_next = prev;
56: prev = item;
57: }
58: cfg->slh_first = prev;
59: }
60:
61:
62: /*
63: * cfgReadConfig() - Read file and add new item at config root
64: *
65: * @f = File resource
66: * @cfg = Config root
67: * return: -1 error or 0 ok
68: */
69: int
70: cfgReadConfig(FILE *f, cfg_root_t * __restrict cfg)
71: {
72: char line[BUFSIZ];
73: struct tagCfg *av = NULL;
74: int flg = 0;
75: char *psAttr, *psVal, szSection[STRSIZ] = { 0 };
76:
77: if (!f || !cfg) {
78: cfg_SetErr(EINVAL, "Invalid parameter(s)");
79: return -1;
80: }
81:
82: while (!feof(f)) {
83: memset(line, 0, sizeof line);
84: fgets(line, sizeof line - 1, f);
85: #ifdef SUPPORT_USER_EOF
86: /* check for user end-of-file */
87: if (line[0] == '.' && line[1] == '\n')
88: break;
89: #endif
90: if (!(psAttr = strpbrk(line, "\r\n"))) {
91: /* skip line, too long */
92: continue;
93: } else {
94: *psAttr = 0;
95: str_Trim(line);
96: }
97:
98: if (flg) {
99: /* continues line */
100: if (!av)
101: continue;
102: else
103: psAttr = line + strlen(line) - 1;
104: if (*psAttr == '\\')
105: *psAttr = 0;
106: else
107: flg = 0;
108: /* concat line to value */
109: AIT_SET_STRCAT(&av->cfg_val, line);
110: if (!flg && AIT_ADDR(&av->cfg_val))
111: str_Unquot((char*) AIT_GET_STR(&av->cfg_val));
112: continue;
113: }
114:
115: /* *NEW PAIR* alloc new pair element */
116: av = e_malloc(sizeof(struct tagCfg));
117: if (!av) {
118: cfg_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
119: return -1;
120: } else {
121: memset(av, 0, sizeof(struct tagCfg));
122: CFG_RC_LOCK(cfg);
123: SLIST_INSERT_HEAD(cfg, av, cfg_next);
124: CFG_RC_UNLOCK(cfg);
125: }
126:
127: /* check for continues line */
128: psAttr = line + (*line ? strlen(line) : 1) - 1;
129: if (*psAttr == '\\') {
130: *psAttr = 0;
131: flg = 1;
132: }
133:
134: /* check for comment or empty line */
135: if (!*line || *line == '#' || *line == ';') {
136: AIT_SET_STR(&av->cfg_val, line);
137: continue;
138: }
139: /* section */
140: if (*line == '[') {
141: psAttr = line + strlen(line) - 1;
142: if (*psAttr == ']') {
143: *psAttr = 0;
144: flg = 0;
145: strlcpy(szSection, line + 1, sizeof szSection);
146: AIT_SET_STR(&av->cfg_sec, line);
147: } else
148: EDEBUG(7, "Ignore section '%s' ... not found ']'", line);
149: continue;
150: }
151: /* parse pair */
152: if (!(psAttr = strchr(line, '='))) {
153: AIT_SET_STR(&av->cfg_val, line);
154: EDEBUG(7, "Ignore a/v '%s' ... not found '='", line);
155: continue;
156: } else {
157: *psAttr = 0;
158: psVal = psAttr + 1;
159: psAttr = line;
160: }
161:
162: /* if exists, added section name to element */
163: if (*szSection) {
164: AIT_SET_STR(&av->cfg_sec, szSection);
165: AIT_KEY(&av->cfg_sec) = crcFletcher16(AIT_GET_LIKE(&av->cfg_sec, u_short*),
166: E_ALIGN(AIT_LEN(&av->cfg_sec) - 1, 2) / 2);
167: }
168:
169: str_RTrim(psAttr);
170: str_LTrim(psVal);
171: if (!flg)
172: str_Unquot(psVal);
173: AIT_SET_STR(&av->cfg_val, psVal);
174: AIT_SET_STR(&av->cfg_attr, psAttr);
175: AIT_KEY(&av->cfg_attr) = crcFletcher16(AIT_GET_LIKE(&av->cfg_attr, u_short*),
176: E_ALIGN(AIT_LEN(&av->cfg_attr) - 1, 2) / 2);
177:
178: CFG_RC_LOCK(cfg);
179: RB_INSERT(tagRC, cfg, av);
180: CFG_RC_UNLOCK(cfg);
181: }
182:
183: return 0;
184: }
185:
186: /*
187: * cfgWriteConfig() - Write config from memory
188: *
189: * @f = File handle
190: * @cfg = Config root
191: * @whitespace = Additional whitespace characters to file
192: * return: -1 error or 0 ok
193: */
194: int
195: cfgWriteConfig(FILE *f, cfg_root_t * __restrict cfg, int whitespace)
196: {
197: struct tagCfg *av;
198: time_t tim;
199: char line[BUFSIZ] = { 0 }, szSection[STRSIZ] = { [0 ... STRSIZ - 1] = 0 };
200:
201: if (!f || !cfg) {
202: cfg_SetErr(EINVAL, "Invalid parameter(s)");
203: return -1;
204: }
205:
206: CFG_RC_LOCK(cfg);
207: _invertQueue(cfg);
208: SLIST_FOREACH(av, cfg, cfg_next) {
209: /* empty lines or comment */
210: if (AIT_ISEMPTY(&av->cfg_attr)) {
211: if (AIT_ISEMPTY(&av->cfg_val))
212: continue;
213: strlcpy(line, AIT_GET_STR(&av->cfg_val), sizeof line);
214: goto skip_sec;
215: }
216:
217: /* section [] */
218: if (!AIT_ISEMPTY(&av->cfg_sec) && AIT_ADDR(&av->cfg_sec) &&
219: strcmp(AIT_GET_STR(&av->cfg_sec), szSection)) {
220: strlcpy(szSection, AIT_GET_STR(&av->cfg_sec), sizeof szSection);
221: if (!cfg_Write(f, "[%s]\n", AIT_GET_STR(&av->cfg_sec))) {
222: LOGERR;
223: _invertQueue(cfg);
224: CFG_RC_UNLOCK(cfg);
225: return -1;
226: }
227: } else if (AIT_ISEMPTY(&av->cfg_sec) && *szSection) {
228: memset(szSection, 0, sizeof szSection);
229: if (!cfg_Write(f, "[]\n")) {
230: LOGERR;
231: _invertQueue(cfg);
232: CFG_RC_UNLOCK(cfg);
233: return -1;
234: }
235: }
236:
237: /* build line */
238: memset(line, 0, sizeof line);
239: if (!AIT_ISEMPTY(&av->cfg_attr) && AIT_TYPE(&av->cfg_attr) == string) {
240: strlcpy(line, AIT_GET_STRZ(&av->cfg_attr), sizeof line);
241: if (whitespace)
242: strlcat(line, " = ", sizeof line);
243: else
244: strlcat(line, "=", sizeof line);
245: }
246: if (!AIT_ISEMPTY(&av->cfg_val) && AIT_TYPE(&av->cfg_val) == string)
247: strlcat(line, AIT_GET_STRZ(&av->cfg_val), sizeof line);
248: skip_sec:
249: /* write */
250: if (!cfg_Write(f, "%s\n", line)) {
251: LOGERR;
252: _invertQueue(cfg);
253: CFG_RC_UNLOCK(cfg);
254: return -1;
255: }
256: }
257: _invertQueue(cfg);
258: CFG_RC_UNLOCK(cfg);
259:
260: if (whitespace) {
261: time(&tim);
262: memset(line, 0, sizeof line);
263: strftime(line, sizeof line, "(UTC) %Y-%m-%d %H:%M:%S", gmtime(&tim));
264: cfg_Write(f, "\n## Config was saved at :: %s ##\n", line);
265: }
266:
267: return 0;
268: }
269:
270: /*
271: * cfgConcatConfig() - Concat two configs into one
272: *
273: * @cfg = Config root
274: * @add_cfg = Concated config will be destroy after merge
275: * return: -1 error or 0 ok
276: */
277: int
278: cfgConcatConfig(cfg_root_t * __restrict cfg, cfg_root_t * __restrict add_cfg)
279: {
280: struct tagCfg *item;
281:
282: if (!cfg || !add_cfg)
283: return -1;
284:
285: CFG_RC_LOCK(add_cfg);
286: CFG_RC_LOCK(cfg);
287:
288: /* concat lists */
289: for (item = SLIST_FIRST(cfg); SLIST_NEXT(item, cfg_next); item = SLIST_NEXT(item, cfg_next));
290: SLIST_NEXT(item, cfg_next) = SLIST_FIRST(add_cfg);
291:
292: /* concat red-black trees */
293: SLIST_FOREACH(item, add_cfg, cfg_next)
294: RB_INSERT(tagRC, cfg, item);
295:
296: CFG_RC_UNLOCK(cfg);
297:
298: add_cfg->slh_first = NULL;
299: add_cfg->rbh_root = NULL;
300: CFG_RC_UNLOCK(add_cfg);
301: pthread_mutex_destroy(&add_cfg->rc_mtx);
302: return 0;
303: }
304:
305: /*
306: * cfgMergeConfig() - Marge two list in one cfg and destroy add_cfg
307: *
308: * @cfg = Config root of main list
309: * @add_cfg = Merged config will be destroy after merge
310: * return: -1 error or 0 ok
311: */
312: int
313: cfgMergeConfig(cfg_root_t * __restrict cfg, cfg_root_t * __restrict add_cfg)
314: {
315: struct tagCfg *item, *merge, *add_next, *next;
316: int flg;
317:
318: if (!cfg || !add_cfg)
319: return -1;
320:
321: CFG_RC_LOCK(add_cfg);
322: CFG_RC_LOCK(cfg);
323:
324: /* merge lists */
325: SLIST_FOREACH_SAFE(item, add_cfg, cfg_next, add_next) {
326: flg = 0;
327: SLIST_FOREACH_SAFE(merge, cfg, cfg_next, next) {
328: if (AIT_ISEMPTY(&merge->cfg_sec) && AIT_ISEMPTY(&item->cfg_sec)) {
329: flg = 1;
330: break;
331: }
332: if (!AIT_ISEMPTY(&merge->cfg_sec) && !AIT_ISEMPTY(&item->cfg_sec) &&
333: AIT_ADDR(&merge->cfg_sec) && AIT_ADDR(&item->cfg_sec) &&
334: !strcmp(AIT_GET_STR(&merge->cfg_sec), AIT_GET_STR(&item->cfg_sec))) {
335: flg = 1;
336: break;
337: }
338: }
339:
340: if (!flg)
341: SLIST_INSERT_HEAD(cfg, item, cfg_next);
342: else
343: SLIST_INSERT_AFTER(merge, item, cfg_next);
344: RB_INSERT(tagRC, cfg, item);
345: }
346:
347: CFG_RC_UNLOCK(cfg);
348:
349: add_cfg->slh_first = NULL;
350: add_cfg->rbh_root = NULL;
351: CFG_RC_UNLOCK(add_cfg);
352: pthread_mutex_destroy(&add_cfg->rc_mtx);
353: return 0;
354: }
355:
356: /*
357: * cfgReadLines() - Read custom lines and add new item at config root
358: *
359: * @f = File resource
360: * @delim = Custom delimiter, if =NULL default is '='
361: * @end = Custom user end of file, if =NULL default is EOF
362: * @cfg = Config root
363: * return: -1 error or 0 ok
364: */
365: int
366: cfgReadLines(FILE *f, const char *delim, const char *end, cfg_root_t * __restrict cfg)
367: {
368: char line[BUFSIZ];
369: struct tagCfg *d, *av = NULL;
370: char *p, *psSec, *psAttr, *psVal;
371:
372: if (!cfg)
373: return -1;
374: if (!delim)
375: delim = ATR_LINES_DELIM;
376:
377: while (!feof(f)) {
378: psSec = psAttr = psVal = NULL;
379: memset(line, 0, sizeof line);
380: fgets(line, sizeof line - 1, f);
381: /* check for user end-of-file */
382: if (strspn(line, end))
383: break;
384:
385: if (!(psAttr = strpbrk(line, "\r\n"))) {
386: /* skip line, too long */
387: continue;
388: } else {
389: *psAttr = 0;
390: str_Trim(line);
391: if (!*line)
392: continue;
393: }
394:
395: if (!av_MakeExt(line, delim, &p, &psVal))
396: continue;
397: else {
398: str_RTrim(p);
399: str_LTrim(psVal);
400: }
401: if (!av_MakeExt(p, SEC_LINES_DELIM, &psSec, &psAttr))
402: psAttr = p;
403:
404: /* *NEW PAIR* alloc new pair element */
405: av = e_malloc(sizeof(struct tagCfg));
406: if (!av) {
407: LOGERR;
408: return -1;
409: } else
410: memset(av, 0, sizeof(struct tagCfg));
411:
412: if (psSec) {
413: AIT_SET_STR(&av->cfg_sec, psSec);
414: AIT_KEY(&av->cfg_sec) = crcFletcher16(AIT_GET_LIKE(&av->cfg_sec, u_short*),
415: E_ALIGN(AIT_LEN(&av->cfg_sec) - 1, 2) / 2);
416: }
417: if (psVal)
418: AIT_SET_STR(&av->cfg_val, psVal);
419: AIT_SET_STR(&av->cfg_attr, psAttr);
420: AIT_KEY(&av->cfg_attr) = crcFletcher16(AIT_GET_LIKE(&av->cfg_attr, u_short*),
421: E_ALIGN(AIT_LEN(&av->cfg_attr) - 1, 2) / 2);
422:
423: CFG_RC_LOCK(cfg);
424: /* find & delete duplicates */
425: if ((d = RB_FIND(tagRC, cfg, av))) {
426: RB_REMOVE(tagRC, cfg, d);
427: SLIST_REMOVE(cfg, d, tagCfg, cfg_next);
428:
429: AIT_FREE_VAL(&d->cfg_val);
430: AIT_FREE_VAL(&d->cfg_attr);
431: AIT_FREE_VAL(&d->cfg_sec);
432: e_free(d);
433: }
434:
435: SLIST_INSERT_HEAD(cfg, av, cfg_next);
436: RB_INSERT(tagRC, cfg, av);
437: CFG_RC_UNLOCK(cfg);
438: }
439:
440: return 0;
441: }
442:
443: /*
444: * cfgWriteLines() - Write custom lines and export data to variable
445: *
446: * @f = File resource
447: * @delim = Custom delimiter, if =NULL default is '='
448: * @eol = End of line string, if =NULL default is "\n"
449: * @section = Export only section, if =NULL default is all
450: * @cfg = Config root
451: * return: =NULL error or !=NULL exported data, must be free after use with ait_freeVar()
452: */
453: ait_val_t *
454: cfgWriteLines(FILE *f, const char *delim, const char *eol, const char *section, cfg_root_t * __restrict cfg)
455: {
456: ait_val_t *v = NULL;
457: struct tagCfg *av;
458:
459: if (!cfg)
460: return NULL;
461: if (!delim)
462: delim = ATR_LINES_DELIM;
463: if (!eol)
464: eol = EOL_LINES_DELIM;
465: if (!(v = ait_allocVar())) {
466: cfg_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
467: return NULL;
468: } else
469: AIT_INIT_VAL2(v, string);
470:
471: SLIST_FOREACH(av, cfg, cfg_next) {
472: if (AIT_ISEMPTY(&av->cfg_attr))
473: continue;
474: if (section) {
475: if (!AIT_ISEMPTY(&av->cfg_sec) && *section)
476: continue;
477: if (strcmp(section, AIT_GET_STR(&av->cfg_sec)))
478: continue;
479: }
480:
481: if (!AIT_ISEMPTY(&av->cfg_sec)) {
482: AIT_SET_STRCAT(v, AIT_GET_STR(&av->cfg_sec));
483: AIT_SET_STRCAT(v, SEC_LINES_DELIM);
484: }
485: AIT_SET_STRCAT(v, AIT_GET_STR(&av->cfg_attr));
486: AIT_SET_STRCAT(v, delim);
487: if (!AIT_ISEMPTY(&av->cfg_val))
488: AIT_SET_STRCAT(v, AIT_GET_STR(&av->cfg_val));
489: AIT_SET_STRCAT(v, eol);
490: }
491:
492: if (f)
493: fputs(AIT_GET_STR(v), f);
494: return v;
495: }
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