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 1.13.2.2 2014/01/30 08:14:56 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: /*
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];
60: struct tagCfg *av = NULL;
61: int flg = 0;
62: char *psAttr, *psVal, szSection[STRSIZ] = { 0 };
63:
64: if (!f || !cfg) {
65: cfg_SetErr(EINVAL, "Invalid parameter(s)");
66: return -1;
67: }
68:
69: while (!feof(f)) {
70: memset(line, 0, sizeof line);
71: fgets(line, sizeof line - 1, f);
72: #ifdef SUPPORT_USER_EOF
73: /* check for user end-of-file */
74: if (line[0] == '.' && line[1] == '\n')
75: break;
76: #endif
77: if (!(psAttr = strpbrk(line, "\r\n"))) {
78: /* skip line, too long */
79: continue;
80: } else {
81: *psAttr = 0;
82: str_Trim(line);
83: }
84:
85: if (flg) {
86: /* continues line */
87: if (!av)
88: continue;
89: else
90: psAttr = line + strlen(line) - 1;
91: if (*psAttr == '\\')
92: *psAttr = 0;
93: else
94: flg = 0;
95: /* concat line to value */
96: AIT_SET_STRCAT(&av->cfg_val, line);
97: if (!flg && AIT_ADDR(&av->cfg_val))
98: str_Unquot((char*) AIT_GET_STR(&av->cfg_val));
99: continue;
100: }
101:
102: /* *NEW PAIR* alloc new pair element */
103: av = e_malloc(sizeof(struct tagCfg));
104: if (!av) {
105: cfg_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
106: return -1;
107: } else {
108: memset(av, 0, sizeof(struct tagCfg));
109: CFG_RC_LOCK(cfg);
110: TAILQ_INSERT_TAIL(cfg, av, cfg_next);
111: CFG_RC_UNLOCK(cfg);
112: }
113:
114: /* check for continues line */
115: psAttr = line + (*line ? strlen(line) : 1) - 1;
116: if (*psAttr == '\\') {
117: *psAttr = 0;
118: flg = 1;
119: }
120:
121: /* check for comment or empty line */
122: if (!*line || *line == '#' || *line == ';') {
123: AIT_SET_STR(&av->cfg_val, line);
124: continue;
125: }
126: /* section */
127: if (*line == '[') {
128: psAttr = line + strlen(line) - 1;
129: if (*psAttr == ']') {
130: *psAttr = 0;
131: flg = 0;
132: strlcpy(szSection, line + 1, sizeof szSection);
133: AIT_SET_STR(&av->cfg_sec, line);
134: } else
135: EDEBUG(7, "Ignore section '%s' ... not found ']'", line);
136: continue;
137: }
138: /* parse pair */
139: if (!(psAttr = strchr(line, '='))) {
140: AIT_SET_STR(&av->cfg_val, line);
141: EDEBUG(7, "Ignore a/v '%s' ... not found '='", line);
142: continue;
143: } else {
144: *psAttr = 0;
145: psVal = psAttr + 1;
146: psAttr = line;
147: }
148:
149: /* if exists, added section name to element */
150: if (*szSection) {
151: AIT_SET_STR(&av->cfg_sec, szSection);
152: AIT_KEY(&av->cfg_sec) = crcFletcher16(AIT_GET_LIKE(&av->cfg_sec, u_short*),
153: E_ALIGN(AIT_LEN(&av->cfg_sec) - 1, 2) / 2);
154: }
155:
156: str_RTrim(psAttr);
157: str_LTrim(psVal);
158: if (!flg)
159: str_Unquot(psVal);
160: AIT_SET_STR(&av->cfg_val, psVal);
161: AIT_SET_STR(&av->cfg_attr, psAttr);
162: AIT_KEY(&av->cfg_attr) = crcFletcher16(AIT_GET_LIKE(&av->cfg_attr, u_short*),
163: E_ALIGN(AIT_LEN(&av->cfg_attr) - 1, 2) / 2);
164:
165: CFG_RC_LOCK(cfg);
166: RB_INSERT(tagRC, cfg, av);
167: CFG_RC_UNLOCK(cfg);
168: }
169:
170: return 0;
171: }
172:
173: /*
174: * cfgWriteConfig() - Write config from memory
175: *
176: * @f = File handle
177: * @cfg = Config root
178: * @whitespace = Additional whitespace characters to file
179: * return: -1 error or 0 ok
180: */
181: int
182: cfgWriteConfig(FILE *f, cfg_root_t * __restrict cfg, int whitespace)
183: {
184: struct tagCfg *av;
185: time_t tim;
186: char line[BUFSIZ] = { 0 }, szSection[STRSIZ] = { [0 ... STRSIZ - 1] = 0 };
187:
188: if (!f || !cfg) {
189: cfg_SetErr(EINVAL, "Invalid parameter(s)");
190: return -1;
191: }
192:
193: CFG_RC_LOCK(cfg);
194: TAILQ_FOREACH(av, cfg, cfg_next) {
195: /* empty lines or comment */
196: if (AIT_ISEMPTY(&av->cfg_attr)) {
197: if (AIT_ISEMPTY(&av->cfg_val))
198: continue;
199: strlcpy(line, AIT_GET_STR(&av->cfg_val), sizeof line);
200: goto skip_sec;
201: }
202:
203: /* section [] */
204: if (!AIT_ISEMPTY(&av->cfg_sec) && AIT_ADDR(&av->cfg_sec) &&
205: strcmp(AIT_GET_STR(&av->cfg_sec), szSection)) {
206: strlcpy(szSection, AIT_GET_STR(&av->cfg_sec), sizeof szSection);
207: if (!cfg_Write(f, "[%s]\n", AIT_GET_STR(&av->cfg_sec))) {
208: LOGERR;
209: CFG_RC_UNLOCK(cfg);
210: return -1;
211: }
212: } else if (AIT_ISEMPTY(&av->cfg_sec) && *szSection) {
213: memset(szSection, 0, sizeof szSection);
214: if (!cfg_Write(f, "[]\n")) {
215: LOGERR;
216: CFG_RC_UNLOCK(cfg);
217: return -1;
218: }
219: }
220:
221: /* build line */
222: memset(line, 0, sizeof line);
223: if (!AIT_ISEMPTY(&av->cfg_attr) && AIT_TYPE(&av->cfg_attr) == string) {
224: strlcpy(line, AIT_GET_STRZ(&av->cfg_attr), sizeof line);
225: if (whitespace)
226: strlcat(line, " = ", sizeof line);
227: else
228: strlcat(line, "=", sizeof line);
229: }
230: if (!AIT_ISEMPTY(&av->cfg_val) && AIT_TYPE(&av->cfg_val) == string)
231: strlcat(line, AIT_GET_STRZ(&av->cfg_val), sizeof line);
232: skip_sec:
233: /* write */
234: if (!cfg_Write(f, "%s\n", line)) {
235: LOGERR;
236: CFG_RC_UNLOCK(cfg);
237: return -1;
238: }
239: }
240: CFG_RC_UNLOCK(cfg);
241:
242: if (whitespace) {
243: time(&tim);
244: memset(line, 0, sizeof line);
245: strftime(line, sizeof line, "(UTC) %Y-%m-%d %H:%M:%S", gmtime(&tim));
246: cfg_Write(f, "\n## Config was saved at :: %s ##\n", line);
247: }
248:
249: return 0;
250: }
251:
252: /*
253: * cfgConcatConfig() - Concat two configs into one
254: *
255: * @cfg = Config root
256: * @add_cfg = Concated config will be destroy after merge
257: * return: -1 error or 0 ok
258: */
259: int
260: cfgConcatConfig(cfg_root_t * __restrict cfg, cfg_root_t * __restrict add_cfg)
261: {
262: struct tagCfg *item;
263:
264: if (!cfg || !add_cfg)
265: return -1;
266:
267: CFG_RC_LOCK(add_cfg);
268: CFG_RC_LOCK(cfg);
269:
270: /* concat lists & red-black trees */
271: TAILQ_FOREACH(item, add_cfg, cfg_next) {
272: TAILQ_INSERT_TAIL(cfg, item, cfg_next);
273: RB_INSERT(tagRC, cfg, item);
274: }
275:
276: CFG_RC_UNLOCK(cfg);
277:
278: TAILQ_INIT(add_cfg);
279: RB_INIT(add_cfg);
280: CFG_RC_UNLOCK(add_cfg);
281: pthread_mutex_destroy(&add_cfg->rc_mtx);
282: return 0;
283: }
284:
285: /*
286: * cfgMergeConfig() - Marge two list in one cfg and destroy add_cfg
287: *
288: * @cfg = Config root of main list
289: * @add_cfg = Merged config will be destroy after merge
290: * return: -1 error or 0 ok
291: */
292: int
293: cfgMergeConfig(cfg_root_t * __restrict cfg, cfg_root_t * __restrict add_cfg)
294: {
295: struct tagCfg *item, *merge, *add_next, *next;
296: int flg;
297:
298: if (!cfg || !add_cfg)
299: return -1;
300:
301: CFG_RC_LOCK(add_cfg);
302: CFG_RC_LOCK(cfg);
303:
304: /* merge lists */
305: TAILQ_FOREACH_SAFE(item, add_cfg, cfg_next, add_next) {
306: flg = 0;
307: TAILQ_FOREACH_SAFE(merge, cfg, cfg_next, next) {
308: if (AIT_ISEMPTY(&merge->cfg_sec) && AIT_ISEMPTY(&item->cfg_sec)) {
309: flg = 1;
310: break;
311: }
312: if (!AIT_ISEMPTY(&merge->cfg_sec) && !AIT_ISEMPTY(&item->cfg_sec) &&
313: AIT_ADDR(&merge->cfg_sec) && AIT_ADDR(&item->cfg_sec) &&
314: !strcmp(AIT_GET_STR(&merge->cfg_sec), AIT_GET_STR(&item->cfg_sec))) {
315: flg = 1;
316: break;
317: }
318: }
319:
320: if (!flg)
321: TAILQ_INSERT_TAIL(cfg, item, cfg_next);
322: else
323: TAILQ_INSERT_AFTER(cfg, merge, item, cfg_next);
324: RB_INSERT(tagRC, cfg, item);
325: }
326:
327: CFG_RC_UNLOCK(cfg);
328:
329: TAILQ_INIT(add_cfg);
330: RB_INIT(add_cfg);
331: CFG_RC_UNLOCK(add_cfg);
332: pthread_mutex_destroy(&add_cfg->rc_mtx);
333: return 0;
334: }
335:
336: /*
337: * cfgReadLines() - Read custom lines and add new item at config root
338: *
339: * @f = File resource
340: * @delim = Custom delimiter, if =NULL default is '='
341: * @end = Custom user end of file, if =NULL default is EOF
342: * @cfg = Config root
343: * return: -1 error or 0 ok
344: */
345: int
346: cfgReadLines(FILE *f, const char *delim, const char *end, cfg_root_t * __restrict cfg)
347: {
348: char line[BUFSIZ];
349: struct tagCfg *d, *av = NULL;
350: char *p, *psSec, *psAttr, *psVal;
351:
352: if (!cfg)
353: return -1;
354: if (!delim)
355: delim = ATR_LINES_DELIM;
356:
357: while (!feof(f)) {
358: psSec = psAttr = psVal = NULL;
359: memset(line, 0, sizeof line);
360: fgets(line, sizeof line - 1, f);
361: /* check for user end-of-file */
362: if (strspn(line, end))
363: break;
364:
365: if (!(psAttr = strpbrk(line, "\r\n"))) {
366: /* skip line, too long */
367: continue;
368: } else {
369: *psAttr = 0;
370: str_Trim(line);
371: if (!*line)
372: continue;
373: }
374:
375: if (!av_MakeExt(line, delim, &p, &psVal))
376: continue;
377: else {
378: str_RTrim(p);
379: str_LTrim(psVal);
380: }
381: if (!av_MakeExt(p, SEC_LINES_DELIM, &psSec, &psAttr))
382: psAttr = p;
383:
384: /* *NEW PAIR* alloc new pair element */
385: av = e_malloc(sizeof(struct tagCfg));
386: if (!av) {
387: LOGERR;
388: return -1;
389: } else
390: memset(av, 0, sizeof(struct tagCfg));
391:
392: if (psSec) {
393: AIT_SET_STR(&av->cfg_sec, psSec);
394: AIT_KEY(&av->cfg_sec) = crcFletcher16(AIT_GET_LIKE(&av->cfg_sec, u_short*),
395: E_ALIGN(AIT_LEN(&av->cfg_sec) - 1, 2) / 2);
396: }
397: if (psVal)
398: AIT_SET_STR(&av->cfg_val, psVal);
399: AIT_SET_STR(&av->cfg_attr, psAttr);
400: AIT_KEY(&av->cfg_attr) = crcFletcher16(AIT_GET_LIKE(&av->cfg_attr, u_short*),
401: E_ALIGN(AIT_LEN(&av->cfg_attr) - 1, 2) / 2);
402:
403: CFG_RC_LOCK(cfg);
404: /* find & delete duplicates */
405: if ((d = RB_FIND(tagRC, cfg, av))) {
406: RB_REMOVE(tagRC, cfg, d);
407: TAILQ_REMOVE(cfg, d, cfg_next);
408:
409: AIT_FREE_VAL(&d->cfg_val);
410: AIT_FREE_VAL(&d->cfg_attr);
411: AIT_FREE_VAL(&d->cfg_sec);
412: e_free(d);
413: }
414:
415: TAILQ_INSERT_TAIL(cfg, av, cfg_next);
416: RB_INSERT(tagRC, cfg, av);
417: CFG_RC_UNLOCK(cfg);
418: }
419:
420: return 0;
421: }
422:
423: /*
424: * cfgWriteLines() - Write custom lines and export data to variable
425: *
426: * @f = File resource
427: * @delim = Custom delimiter, if =NULL default is '='
428: * @eol = End of line string, if =NULL default is "\n"
429: * @section = Export only section, if =NULL default is all
430: * @cfg = Config root
431: * return: =NULL error or !=NULL exported data, must be free after use with ait_freeVar()
432: */
433: ait_val_t *
434: cfgWriteLines(FILE *f, const char *delim, const char *eol, const char *section, cfg_root_t * __restrict cfg)
435: {
436: ait_val_t *v = NULL;
437: struct tagCfg *av;
438:
439: if (!cfg)
440: return NULL;
441: if (!delim)
442: delim = ATR_LINES_DELIM;
443: if (!eol)
444: eol = EOL_LINES_DELIM;
445: if (!(v = ait_allocVar())) {
446: cfg_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
447: return NULL;
448: } else
449: AIT_INIT_VAL2(v, string);
450:
451: TAILQ_FOREACH(av, cfg, cfg_next) {
452: if (AIT_ISEMPTY(&av->cfg_attr))
453: continue;
454: if (section) {
455: if (!AIT_ISEMPTY(&av->cfg_sec) && *section)
456: continue;
457: if (strcmp(section, AIT_GET_STR(&av->cfg_sec)))
458: continue;
459: }
460:
461: if (!AIT_ISEMPTY(&av->cfg_sec)) {
462: AIT_SET_STRCAT(v, AIT_GET_STR(&av->cfg_sec));
463: AIT_SET_STRCAT(v, SEC_LINES_DELIM);
464: }
465: AIT_SET_STRCAT(v, AIT_GET_STR(&av->cfg_attr));
466: AIT_SET_STRCAT(v, delim);
467: if (!AIT_ISEMPTY(&av->cfg_val))
468: AIT_SET_STRCAT(v, AIT_GET_STR(&av->cfg_val));
469: AIT_SET_STRCAT(v, eol);
470: }
471:
472: if (f)
473: fputs(AIT_GET_STR(v), f);
474: return v;
475: }
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