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 1.11 2012/09/19 15:22:32 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, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
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: #include "aitcfg.h"
48:
49:
50: static inline void
51: _invertQueue(cfg_root_t * __restrict cfg)
52: {
53: struct tagCfg *item, *next, *prev = NULL;
54:
55: SLIST_FOREACH_SAFE(item, cfg, cfg_next, next) {
56: item->cfg_next.sle_next = prev;
57: prev = item;
58: }
59: cfg->slh_first = prev;
60: }
61:
62:
63: /*
64: * cfgReadConfig() - Read file and add new item at config root
65: *
66: * @f = File resource
67: * @cfg = Config root
68: * return: -1 error or 0 ok
69: */
70: int
71: cfgReadConfig(FILE *f, cfg_root_t * __restrict cfg)
72: {
73: char line[BUFSIZ];
74: struct tagCfg *av = NULL;
75: int flg = 0;
76: char *psAttr, *psVal, szSection[STRSIZ] = { 0 };
77:
78: if (!f || !cfg) {
79: cfg_SetErr(EINVAL, "Invalid parameter(s)");
80: return -1;
81: }
82:
83: while (!feof(f)) {
84: memset(line, 0, sizeof line);
85: fgets(line, sizeof line - 1, f);
86: #ifdef SUPPORT_USER_EOF
87: /* check for user end-of-file */
88: if (line[0] == '.' && line[1] == '\n')
89: break;
90: #endif
91: if (!(psAttr = strpbrk(line, "\r\n"))) {
92: /* skip line, too long */
93: continue;
94: } else {
95: *psAttr = 0;
96: io_TrimStr(line);
97: }
98:
99: if (flg) {
100: /* continues line */
101: if (!av)
102: continue;
103: else
104: psAttr = line + strlen(line) - 1;
105: if (*psAttr == '\\')
106: *psAttr = 0;
107: else
108: flg = 0;
109: /* concat line to value */
110: AIT_SET_STRCAT(&av->cfg_val, line);
111: if (!flg && AIT_ADDR(&av->cfg_val))
112: io_UnquotStr((char*) AIT_GET_STR(&av->cfg_val));
113: continue;
114: }
115:
116: /* *NEW PAIR* alloc new pair element */
117: av = io_malloc(sizeof(struct tagCfg));
118: if (!av) {
119: cfg_SetErr(io_GetErrno(), "%s", io_GetError());
120: return -1;
121: } else {
122: memset(av, 0, sizeof(struct tagCfg));
123: CFG_RC_LOCK(cfg);
124: SLIST_INSERT_HEAD(cfg, av, cfg_next);
125: CFG_RC_UNLOCK(cfg);
126: }
127:
128: /* check for continues line */
129: psAttr = line + (*line ? strlen(line) : 1) - 1;
130: if (*psAttr == '\\') {
131: *psAttr = 0;
132: flg = 1;
133: }
134:
135: /* check for comment or empty line */
136: if (!*line || *line == '#' || *line == ';') {
137: AIT_SET_STR(&av->cfg_val, line);
138: continue;
139: }
140: /* section */
141: if (*line == '[') {
142: AIT_SET_STR(&av->cfg_val, line);
143: psAttr = line + strlen(line) - 1;
144: if (*psAttr == ']') {
145: *psAttr = 0;
146: flg = 0;
147: strlcpy(szSection, line + 1, sizeof szSection);
148: } else
149: ioDEBUG(7, "Ignore section '%s' ... not found ']'", line);
150: continue;
151: }
152: /* parse pair */
153: if (!(psAttr = strchr(line, '='))) {
154: AIT_SET_STR(&av->cfg_val, line);
155: ioDEBUG(7, "Ignore a/v '%s' ... not found '='", line);
156: continue;
157: } else {
158: *psAttr = 0;
159: psVal = psAttr + 1;
160: psAttr = line;
161: }
162:
163: /* if exists, added section name to element */
164: if (*szSection) {
165: AIT_SET_STR(&av->cfg_sec, szSection);
166: AIT_KEY(&av->cfg_sec) = crcFletcher16(AIT_GET_LIKE(&av->cfg_sec, u_short*),
167: io_align(AIT_LEN(&av->cfg_sec) - 1, 2) / 2);
168: }
169:
170: io_RTrimStr(psAttr);
171: io_LTrimStr(psVal);
172: if (!flg)
173: io_UnquotStr(psVal);
174: AIT_SET_STR(&av->cfg_val, psVal);
175: AIT_SET_STR(&av->cfg_attr, psAttr);
176: AIT_KEY(&av->cfg_attr) = crcFletcher16(AIT_GET_LIKE(&av->cfg_attr, u_short*),
177: io_align(AIT_LEN(&av->cfg_attr) - 1, 2) / 2);
178:
179: CFG_RC_LOCK(cfg);
180: RB_INSERT(tagRC, cfg, av);
181: CFG_RC_UNLOCK(cfg);
182: }
183:
184: return 0;
185: }
186:
187: /*
188: * cfgWriteConfig() - Write config from memory
189: *
190: * @f = File handle
191: * @cfg = Config root
192: * @whitespace = Additional whitespace characters to file
193: * return: -1 error or 0 ok
194: */
195: int
196: cfgWriteConfig(FILE *f, cfg_root_t * __restrict cfg, int whitespace)
197: {
198: struct tagCfg *av;
199: time_t tim;
200: char line[BUFSIZ] = { 0 }, szSection[STRSIZ] = { 0 };
201:
202: if (!f || !cfg) {
203: cfg_SetErr(EINVAL, "Invalid parameter(s)");
204: return -1;
205: }
206:
207: CFG_RC_LOCK(cfg);
208: _invertQueue(cfg);
209: SLIST_FOREACH(av, cfg, cfg_next) {
210: /* add +1 line for section [] */
211: if (!AIT_ISEMPTY(&av->cfg_sec) && AIT_ADDR(&av->cfg_sec) &&
212: strcmp(AIT_GET_STR(&av->cfg_sec), szSection)) {
213: strlcpy(szSection, AIT_GET_STR(&av->cfg_sec), sizeof szSection);
214: if (!cfg_Write(f, "\n[%s]\n", AIT_GET_STR(&av->cfg_sec))) {
215: LOGERR;
216: CFG_RC_UNLOCK(cfg);
217: return -1;
218: }
219: }
220: if (AIT_ISEMPTY(&av->cfg_sec) && *szSection) {
221: memset(szSection, 0, sizeof szSection);
222: if (!cfg_Write(f, "\n[]\n")) {
223: LOGERR;
224: CFG_RC_UNLOCK(cfg);
225: return -1;
226: }
227: }
228:
229: /* build line */
230: memset(line, 0, sizeof line);
231: if (!AIT_ISEMPTY(&av->cfg_attr) && AIT_TYPE(&av->cfg_attr) == string) {
232: strlcpy(line, AIT_GET_STRZ(&av->cfg_attr), sizeof line);
233: if (whitespace)
234: strlcat(line, " = ", sizeof line);
235: else
236: strlcat(line, "=", sizeof line);
237: }
238: if (!AIT_ISEMPTY(&av->cfg_val) && AIT_TYPE(&av->cfg_val) == string)
239: strlcat(line, AIT_GET_STRZ(&av->cfg_val), sizeof line);
240:
241: /* write */
242: if (!cfg_Write(f, "%s\n", line)) {
243: LOGERR;
244: _invertQueue(cfg);
245: CFG_RC_UNLOCK(cfg);
246: return -1;
247: }
248: }
249: _invertQueue(cfg);
250: CFG_RC_UNLOCK(cfg);
251:
252: if (whitespace) {
253: time(&tim);
254: memset(line, 0, sizeof line);
255: strftime(line, sizeof line, "(UTC) %Y-%m-%d %H:%M:%S", gmtime(&tim));
256: cfg_Write(f, "\n## Config was saved at :: %s ##\n", line);
257: }
258:
259: return 0;
260: }
261:
262: /*
263: * cfgConcatConfig() - Concat two configs into one
264: *
265: * @cfg = Config root
266: * @add_cfg = Concated config will be destroy after merge
267: * return: -1 error or 0 ok
268: */
269: int
270: cfgConcatConfig(cfg_root_t * __restrict cfg, cfg_root_t * __restrict add_cfg)
271: {
272: struct tagCfg *item;
273:
274: if (!cfg || !add_cfg)
275: return -1;
276:
277: CFG_RC_LOCK(add_cfg);
278: CFG_RC_LOCK(cfg);
279:
280: /* concat lists */
281: for (item = SLIST_FIRST(cfg); SLIST_NEXT(item, cfg_next); item = SLIST_NEXT(item, cfg_next));
282: SLIST_NEXT(item, cfg_next) = SLIST_FIRST(add_cfg);
283:
284: /* concat red-black trees */
285: SLIST_FOREACH(item, add_cfg, cfg_next)
286: RB_INSERT(tagRC, cfg, item);
287:
288: CFG_RC_UNLOCK(cfg);
289:
290: add_cfg->slh_first = NULL;
291: add_cfg->rbh_root = NULL;
292: CFG_RC_UNLOCK(add_cfg);
293: pthread_mutex_destroy(&add_cfg->rc_mtx);
294: return 0;
295: }
296:
297: /*
298: * cfgMergeConfig() - Marge two list in one cfg and destroy add_cfg
299: *
300: * @cfg = Config root of main list
301: * @add_cfg = Merged config will be destroy after merge
302: * return: -1 error or 0 ok
303: */
304: int
305: cfgMergeConfig(cfg_root_t * __restrict cfg, cfg_root_t * __restrict add_cfg)
306: {
307: struct tagCfg *item, *merge, *add_next, *next;
308: int flg;
309:
310: if (!cfg || !add_cfg)
311: return -1;
312:
313: CFG_RC_LOCK(add_cfg);
314: CFG_RC_LOCK(cfg);
315:
316: /* merge lists */
317: SLIST_FOREACH_SAFE(item, add_cfg, cfg_next, add_next) {
318: flg = 0;
319: SLIST_FOREACH_SAFE(merge, cfg, cfg_next, next) {
320: if (AIT_ISEMPTY(&merge->cfg_sec) && AIT_ISEMPTY(&item->cfg_sec)) {
321: flg = 1;
322: break;
323: }
324: if (!AIT_ISEMPTY(&merge->cfg_sec) && !AIT_ISEMPTY(&item->cfg_sec) &&
325: AIT_ADDR(&merge->cfg_sec) && AIT_ADDR(&item->cfg_sec) &&
326: !strcmp(AIT_GET_STR(&merge->cfg_sec), AIT_GET_STR(&item->cfg_sec))) {
327: flg = 1;
328: break;
329: }
330: }
331:
332: if (!flg)
333: SLIST_INSERT_HEAD(cfg, item, cfg_next);
334: else
335: SLIST_INSERT_AFTER(merge, item, cfg_next);
336: RB_INSERT(tagRC, cfg, item);
337: }
338:
339: CFG_RC_UNLOCK(cfg);
340:
341: add_cfg->slh_first = NULL;
342: add_cfg->rbh_root = NULL;
343: CFG_RC_UNLOCK(add_cfg);
344: pthread_mutex_destroy(&add_cfg->rc_mtx);
345: return 0;
346: }
347:
348: /*
349: * cfgReadLines() - Read custom lines and add new item at config root
350: *
351: * @f = File resource
352: * @delim = Custom delimiter, if =NULL default is '='
353: * @end = Custom user end of file, if =NULL default is EOF
354: * @cfg = Config root
355: * return: -1 error or 0 ok
356: */
357: int
358: cfgReadLines(FILE *f, const char *delim, const char *end, cfg_root_t * __restrict cfg)
359: {
360: char line[BUFSIZ];
361: struct tagCfg *d, *av = NULL;
362: char *p, *psSec, *psAttr, *psVal;
363:
364: if (!cfg)
365: return -1;
366: if (!delim)
367: delim = ATR_LINES_DELIM;
368:
369: while (!feof(f)) {
370: psSec = psAttr = psVal = NULL;
371: memset(line, 0, sizeof line);
372: fgets(line, sizeof line - 1, f);
373: /* check for user end-of-file */
374: if (strspn(line, end))
375: break;
376:
377: if (!(psAttr = strpbrk(line, "\r\n"))) {
378: /* skip line, too long */
379: continue;
380: } else {
381: *psAttr = 0;
382: io_TrimStr(line);
383: if (!*line)
384: continue;
385: }
386:
387: if (!io_MakeAV2(line, delim, &p, &psVal))
388: continue;
389: else {
390: io_RTrimStr(p);
391: io_LTrimStr(psVal);
392: }
393: if (!io_MakeAV2(p, SEC_LINES_DELIM, &psSec, &psAttr))
394: psAttr = p;
395:
396: /* *NEW PAIR* alloc new pair element */
397: av = io_malloc(sizeof(struct tagCfg));
398: if (!av) {
399: LOGERR;
400: return -1;
401: } else
402: memset(av, 0, sizeof(struct tagCfg));
403:
404: if (psSec) {
405: AIT_SET_STR(&av->cfg_sec, psSec);
406: AIT_KEY(&av->cfg_sec) = crcFletcher16(AIT_GET_LIKE(&av->cfg_sec, u_short*),
407: io_align(AIT_LEN(&av->cfg_sec) - 1, 2) / 2);
408: }
409: if (psVal)
410: AIT_SET_STR(&av->cfg_val, psVal);
411: AIT_SET_STR(&av->cfg_attr, psAttr);
412: AIT_KEY(&av->cfg_attr) = crcFletcher16(AIT_GET_LIKE(&av->cfg_attr, u_short*),
413: io_align(AIT_LEN(&av->cfg_attr) - 1, 2) / 2);
414:
415: CFG_RC_LOCK(cfg);
416: /* find & delete duplicates */
417: if ((d = RB_FIND(tagRC, cfg, av))) {
418: RB_REMOVE(tagRC, cfg, d);
419: SLIST_REMOVE(cfg, d, tagCfg, cfg_next);
420:
421: AIT_FREE_VAL(&d->cfg_val);
422: AIT_FREE_VAL(&d->cfg_attr);
423: AIT_FREE_VAL(&d->cfg_sec);
424: io_free(d);
425: }
426:
427: SLIST_INSERT_HEAD(cfg, av, cfg_next);
428: RB_INSERT(tagRC, cfg, av);
429: CFG_RC_UNLOCK(cfg);
430: }
431:
432: return 0;
433: }
434:
435: /*
436: * cfgWriteLines() - Write custom lines and export data to variable
437: *
438: * @f = File resource
439: * @delim = Custom delimiter, if =NULL default is '='
440: * @eol = End of line string, if =NULL default is "\n"
441: * @section = Export only section, if =NULL default is all
442: * @cfg = Config root
443: * return: =NULL error or !=NULL exported data, must be free after use with io_freeVar()
444: */
445: ait_val_t *
446: cfgWriteLines(FILE *f, const char *delim, const char *eol, const char *section, cfg_root_t * __restrict cfg)
447: {
448: ait_val_t *v = NULL;
449: struct tagCfg *av;
450:
451: if (!cfg)
452: return NULL;
453: if (!delim)
454: delim = ATR_LINES_DELIM;
455: if (!eol)
456: eol = EOL_LINES_DELIM;
457: if (!(v = io_allocVar())) {
458: cfg_SetErr(io_GetErrno(), "%s", io_GetError());
459: return NULL;
460: } else
461: AIT_INIT_VAL2(v, string);
462:
463: SLIST_FOREACH(av, cfg, cfg_next) {
464: if (AIT_ISEMPTY(&av->cfg_attr))
465: continue;
466: if (section) {
467: if (!AIT_ISEMPTY(&av->cfg_sec) && *section)
468: continue;
469: if (strcmp(section, AIT_GET_STR(&av->cfg_sec)))
470: continue;
471: }
472:
473: if (!AIT_ISEMPTY(&av->cfg_sec)) {
474: AIT_SET_STRCAT(v, AIT_GET_STR(&av->cfg_sec));
475: AIT_SET_STRCAT(v, SEC_LINES_DELIM);
476: }
477: AIT_SET_STRCAT(v, AIT_GET_STR(&av->cfg_attr));
478: AIT_SET_STRCAT(v, delim);
479: if (!AIT_ISEMPTY(&av->cfg_val))
480: AIT_SET_STRCAT(v, AIT_GET_STR(&av->cfg_val));
481: AIT_SET_STRCAT(v, eol);
482: }
483:
484: if (f)
485: fputs(AIT_GET_STR(v), f);
486: return v;
487: }
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