Annotation of libaitcfg/src/parse.c, revision 1.17.2.1
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 $
1.17.2.1! misho 6: * $Id: parse.c,v 1.17 2017/06/30 08:44:44 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:
1.17.2.1! misho 15: Copyright 2004 - 2018
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: /*
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: */
1.9 misho 56: int
57: cfgReadConfig(FILE *f, cfg_root_t * __restrict cfg)
1.3 misho 58: {
1.17 misho 59: char line[BUFSIZ], origin[BUFSIZ];
1.7 misho 60: struct tagCfg *av = NULL;
61: int flg = 0;
62: char *psAttr, *psVal, szSection[STRSIZ] = { 0 };
1.17.2.1! misho 63: FILE *ff;
1.3 misho 64:
1.11 misho 65: if (!f || !cfg) {
66: cfg_SetErr(EINVAL, "Invalid parameter(s)");
67: return -1;
68: }
69:
1.7 misho 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;
1.17 misho 83: strlcpy(origin, line, sizeof origin);
1.12 misho 84: str_Trim(line);
1.7 misho 85: }
1.3 misho 86:
1.7 misho 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);
1.10 misho 99: if (!flg && AIT_ADDR(&av->cfg_val))
1.12 misho 100: str_Unquot((char*) AIT_GET_STR(&av->cfg_val));
1.17.2.1! misho 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: }
1.7 misho 114: continue;
115: }
1.3 misho 116:
1.7 misho 117: /* *NEW PAIR* alloc new pair element */
1.12 misho 118: av = e_malloc(sizeof(struct tagCfg));
1.7 misho 119: if (!av) {
1.12 misho 120: cfg_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1.7 misho 121: return -1;
122: } else {
123: memset(av, 0, sizeof(struct tagCfg));
124: CFG_RC_LOCK(cfg);
1.14 misho 125: TAILQ_INSERT_TAIL(cfg, av, cfg_next);
1.7 misho 126: CFG_RC_UNLOCK(cfg);
1.3 misho 127: }
1.7 misho 128:
1.17.2.1! misho 129: /* check for comment or empty line */
! 130: if (!*line || *line == '#' || *line == ';') {
! 131: AIT_SET_STR(&av->cfg_val, line);
! 132: continue;
! 133: }
! 134:
1.7 misho 135: /* check for continues line */
1.8 misho 136: psAttr = line + (*line ? strlen(line) : 1) - 1;
1.7 misho 137: if (*psAttr == '\\') {
138: *psAttr = 0;
139: flg = 1;
1.3 misho 140: }
141:
1.7 misho 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);
1.13 misho 149: AIT_SET_STR(&av->cfg_sec, line);
1.7 misho 150: } else
1.12 misho 151: EDEBUG(7, "Ignore section '%s' ... not found ']'", line);
1.7 misho 152: continue;
153: }
154: /* parse pair */
155: if (!(psAttr = strchr(line, '='))) {
1.17 misho 156: AIT_SET_STR(&av->cfg_val, origin);
1.12 misho 157: EDEBUG(7, "Ignore a/v '%s' ... not found '='", line);
1.7 misho 158: continue;
1.3 misho 159: } else {
1.7 misho 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*),
1.12 misho 169: E_ALIGN(AIT_LEN(&av->cfg_sec) - 1, 2) / 2);
1.3 misho 170: }
171:
1.12 misho 172: str_RTrim(psAttr);
173: str_LTrim(psVal);
1.7 misho 174: if (!flg)
1.12 misho 175: str_Unquot(psVal);
1.7 misho 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*),
1.12 misho 179: E_ALIGN(AIT_LEN(&av->cfg_attr) - 1, 2) / 2);
1.7 misho 180:
181: CFG_RC_LOCK(cfg);
182: RB_INSERT(tagRC, cfg, av);
183: CFG_RC_UNLOCK(cfg);
1.17.2.1! misho 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: }
1.3 misho 196: }
197:
198: return 0;
199: }
200:
1.1 misho 201: /*
1.7 misho 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)
1.1 misho 211: {
1.7 misho 212: struct tagCfg *av;
1.13 misho 213: char line[BUFSIZ] = { 0 }, szSection[STRSIZ] = { [0 ... STRSIZ - 1] = 0 };
1.1 misho 214:
1.11 misho 215: if (!f || !cfg) {
216: cfg_SetErr(EINVAL, "Invalid parameter(s)");
217: return -1;
218: }
219:
1.7 misho 220: CFG_RC_LOCK(cfg);
1.14 misho 221: RB_FOREACH(av, tagRC, cfg) {
1.13 misho 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 [] */
1.10 misho 231: if (!AIT_ISEMPTY(&av->cfg_sec) && AIT_ADDR(&av->cfg_sec) &&
1.14 misho 232: strcmp(AIT_GET_STRZ(&av->cfg_sec), szSection)) {
1.7 misho 233: strlcpy(szSection, AIT_GET_STR(&av->cfg_sec), sizeof szSection);
1.14 misho 234: if (!cfg_Write(f, "\n[%s]\n", AIT_GET_STR(&av->cfg_sec))) {
1.7 misho 235: LOGERR;
236: CFG_RC_UNLOCK(cfg);
237: return -1;
1.1 misho 238: }
1.13 misho 239: } else if (AIT_ISEMPTY(&av->cfg_sec) && *szSection) {
1.7 misho 240: memset(szSection, 0, sizeof szSection);
1.14 misho 241: if (!cfg_Write(f, "\n[]\n")) {
1.1 misho 242: LOGERR;
1.7 misho 243: CFG_RC_UNLOCK(cfg);
1.1 misho 244: return -1;
245: }
1.7 misho 246: }
247:
248: /* build line */
249: memset(line, 0, sizeof line);
1.11 misho 250: if (!AIT_ISEMPTY(&av->cfg_attr) && AIT_TYPE(&av->cfg_attr) == string) {
251: strlcpy(line, AIT_GET_STRZ(&av->cfg_attr), sizeof line);
1.7 misho 252: if (whitespace)
253: strlcat(line, " = ", sizeof line);
254: else
255: strlcat(line, "=", sizeof line);
256: }
1.11 misho 257: if (!AIT_ISEMPTY(&av->cfg_val) && AIT_TYPE(&av->cfg_val) == string)
258: strlcat(line, AIT_GET_STRZ(&av->cfg_val), sizeof line);
1.13 misho 259: skip_sec:
1.7 misho 260: /* write */
261: if (!cfg_Write(f, "%s\n", line)) {
262: LOGERR;
263: CFG_RC_UNLOCK(cfg);
264: return -1;
1.1 misho 265: }
266: }
1.7 misho 267: CFG_RC_UNLOCK(cfg);
268:
1.1 misho 269: return 0;
270: }
271:
272: /*
1.7 misho 273: * cfgConcatConfig() - Concat two configs into one
274: *
275: * @cfg = Config root
276: * @add_cfg = Concated config will be destroy after merge
277: * return: -1 error or 0 ok
278: */
279: int
280: cfgConcatConfig(cfg_root_t * __restrict cfg, cfg_root_t * __restrict add_cfg)
1.1 misho 281: {
1.7 misho 282: struct tagCfg *item;
1.3 misho 283:
1.7 misho 284: if (!cfg || !add_cfg)
285: return -1;
1.3 misho 286:
1.7 misho 287: CFG_RC_LOCK(add_cfg);
288: CFG_RC_LOCK(cfg);
1.3 misho 289:
1.14 misho 290: /* concat lists & red-black trees */
291: TAILQ_FOREACH(item, add_cfg, cfg_next) {
292: TAILQ_INSERT_TAIL(cfg, item, cfg_next);
1.7 misho 293: RB_INSERT(tagRC, cfg, item);
1.14 misho 294: }
1.3 misho 295:
1.7 misho 296: CFG_RC_UNLOCK(cfg);
1.3 misho 297:
1.14 misho 298: TAILQ_INIT(add_cfg);
299: RB_INIT(add_cfg);
1.11 misho 300: CFG_RC_UNLOCK(add_cfg);
1.7 misho 301: pthread_mutex_destroy(&add_cfg->rc_mtx);
302: return 0;
1.3 misho 303: }
1.1 misho 304:
1.3 misho 305: /*
1.7 misho 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)
1.3 misho 314: {
1.10 misho 315: struct tagCfg *item, *merge, *add_next, *next;
1.3 misho 316: int flg;
1.1 misho 317:
1.3 misho 318: if (!cfg || !add_cfg)
1.1 misho 319: return -1;
320:
1.7 misho 321: CFG_RC_LOCK(add_cfg);
322: CFG_RC_LOCK(cfg);
1.10 misho 323:
324: /* merge lists */
1.14 misho 325: TAILQ_FOREACH_SAFE(item, add_cfg, cfg_next, add_next) {
1.7 misho 326: flg = 0;
1.14 misho 327: TAILQ_FOREACH_SAFE(merge, cfg, cfg_next, next) {
1.7 misho 328: if (AIT_ISEMPTY(&merge->cfg_sec) && AIT_ISEMPTY(&item->cfg_sec)) {
1.3 misho 329: flg = 1;
330: break;
331: }
1.7 misho 332: if (!AIT_ISEMPTY(&merge->cfg_sec) && !AIT_ISEMPTY(&item->cfg_sec) &&
1.10 misho 333: AIT_ADDR(&merge->cfg_sec) && AIT_ADDR(&item->cfg_sec) &&
1.7 misho 334: !strcmp(AIT_GET_STR(&merge->cfg_sec), AIT_GET_STR(&item->cfg_sec))) {
1.3 misho 335: flg = 1;
336: break;
1.1 misho 337: }
338: }
1.3 misho 339:
1.10 misho 340: if (!flg)
1.14 misho 341: TAILQ_INSERT_TAIL(cfg, item, cfg_next);
1.10 misho 342: else
1.14 misho 343: TAILQ_INSERT_AFTER(cfg, merge, item, cfg_next);
1.10 misho 344: RB_INSERT(tagRC, cfg, item);
1.1 misho 345: }
1.10 misho 346:
1.7 misho 347: CFG_RC_UNLOCK(cfg);
1.1 misho 348:
1.14 misho 349: TAILQ_INIT(add_cfg);
350: RB_INIT(add_cfg);
1.11 misho 351: CFG_RC_UNLOCK(add_cfg);
1.7 misho 352: pthread_mutex_destroy(&add_cfg->rc_mtx);
1.1 misho 353: return 0;
354: }
1.9 misho 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;
1.11 misho 370: char *p, *psSec, *psAttr, *psVal;
371:
372: if (!cfg)
373: return -1;
374: if (!delim)
375: delim = ATR_LINES_DELIM;
1.9 misho 376:
377: while (!feof(f)) {
1.11 misho 378: psSec = psAttr = psVal = NULL;
1.9 misho 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;
1.12 misho 390: str_Trim(line);
1.9 misho 391: if (!*line)
392: continue;
393: }
394:
1.12 misho 395: if (!av_MakeExt(line, delim, &p, &psVal))
1.9 misho 396: continue;
397: else {
1.12 misho 398: str_RTrim(p);
399: str_LTrim(psVal);
1.9 misho 400: }
1.12 misho 401: if (!av_MakeExt(p, SEC_LINES_DELIM, &psSec, &psAttr))
1.11 misho 402: psAttr = p;
1.9 misho 403:
404: /* *NEW PAIR* alloc new pair element */
1.12 misho 405: av = e_malloc(sizeof(struct tagCfg));
1.9 misho 406: if (!av) {
407: LOGERR;
408: return -1;
409: } else
410: memset(av, 0, sizeof(struct tagCfg));
411:
1.11 misho 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*),
1.12 misho 415: E_ALIGN(AIT_LEN(&av->cfg_sec) - 1, 2) / 2);
1.11 misho 416: }
1.9 misho 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*),
1.12 misho 421: E_ALIGN(AIT_LEN(&av->cfg_attr) - 1, 2) / 2);
1.9 misho 422:
423: CFG_RC_LOCK(cfg);
424: /* find & delete duplicates */
425: if ((d = RB_FIND(tagRC, cfg, av))) {
426: RB_REMOVE(tagRC, cfg, d);
1.14 misho 427: TAILQ_REMOVE(cfg, d, cfg_next);
1.9 misho 428:
429: AIT_FREE_VAL(&d->cfg_val);
430: AIT_FREE_VAL(&d->cfg_attr);
431: AIT_FREE_VAL(&d->cfg_sec);
1.12 misho 432: e_free(d);
1.9 misho 433: }
434:
1.14 misho 435: TAILQ_INSERT_TAIL(cfg, av, cfg_next);
1.9 misho 436: RB_INSERT(tagRC, cfg, av);
437: CFG_RC_UNLOCK(cfg);
438: }
439:
440: return 0;
441: }
442:
1.11 misho 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
1.12 misho 451: * return: =NULL error or !=NULL exported data, must be free after use with ait_freeVar()
1.11 misho 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;
1.12 misho 465: if (!(v = ait_allocVar())) {
466: cfg_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
1.11 misho 467: return NULL;
468: } else
469: AIT_INIT_VAL2(v, string);
470:
1.14 misho 471: TAILQ_FOREACH(av, cfg, cfg_next) {
1.11 misho 472: if (section) {
473: if (!AIT_ISEMPTY(&av->cfg_sec) && *section)
474: continue;
1.14 misho 475: if (strcmp(section, AIT_GET_STRZ(&av->cfg_sec)))
1.11 misho 476: continue;
477: }
478:
479: if (!AIT_ISEMPTY(&av->cfg_sec)) {
480: AIT_SET_STRCAT(v, AIT_GET_STR(&av->cfg_sec));
481: AIT_SET_STRCAT(v, SEC_LINES_DELIM);
482: }
1.16 misho 483: if (!AIT_ISEMPTY(&av->cfg_attr)) {
484: AIT_SET_STRCAT(v, AIT_GET_STR(&av->cfg_attr));
485: AIT_SET_STRCAT(v, delim);
486: }
1.11 misho 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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