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 1.8 2012/07/22 21:54:47 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 int
51: cfg_Write(FILE *f, char *fmt, ...)
52: {
53: int ret = 0;
54: va_list lst;
55:
56: va_start(lst, fmt);
57: ret = vfprintf(f, fmt, lst);
58: va_end(lst);
59:
60: return ret;
61: }
62:
63: static inline void
64: _invertQueue(cfg_root_t * __restrict cfg)
65: {
66: struct tagCfg *item, *next, *prev = NULL;
67:
68: SLIST_FOREACH_SAFE(item, cfg, cfg_next, next) {
69: item->cfg_next.sle_next = prev;
70: prev = item;
71: }
72: cfg->slh_first = prev;
73: }
74:
75:
76: /*
77: * cfgReadConfig() - Read file and add new item at config root
78: *
79: * @f = File resource
80: * @cfg = Config root
81: * return: -1 error or 0 ok
82: */
83: int cfgReadConfig(FILE *f, cfg_root_t * __restrict cfg)
84: {
85: char line[BUFSIZ];
86: struct tagCfg *av = NULL;
87: int flg = 0;
88: char *psAttr, *psVal, szSection[STRSIZ] = { 0 };
89:
90: while (!feof(f)) {
91: memset(line, 0, sizeof line);
92: fgets(line, sizeof line - 1, f);
93: #ifdef SUPPORT_USER_EOF
94: /* check for user end-of-file */
95: if (line[0] == '.' && line[1] == '\n')
96: break;
97: #endif
98: if (!(psAttr = strpbrk(line, "\r\n"))) {
99: /* skip line, too long */
100: continue;
101: } else {
102: *psAttr = 0;
103: io_TrimStr(line);
104: }
105:
106: if (flg) {
107: /* continues line */
108: if (!av)
109: continue;
110: else
111: psAttr = line + strlen(line) - 1;
112: if (*psAttr == '\\')
113: *psAttr = 0;
114: else
115: flg = 0;
116: /* concat line to value */
117: AIT_SET_STRCAT(&av->cfg_val, line);
118: if (!flg)
119: io_UnquotStr((char*) AIT_GET_STR(&av->cfg_val));
120: continue;
121: }
122:
123: /* *NEW PAIR* alloc new pair element */
124: av = io_malloc(sizeof(struct tagCfg));
125: if (!av) {
126: LOGERR;
127: return -1;
128: } else {
129: memset(av, 0, sizeof(struct tagCfg));
130: CFG_RC_LOCK(cfg);
131: SLIST_INSERT_HEAD(cfg, av, cfg_next);
132: CFG_RC_UNLOCK(cfg);
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: /* check for comment or empty line */
143: if (!*line || *line == '#' || *line == ';') {
144: AIT_SET_STR(&av->cfg_val, line);
145: continue;
146: }
147: /* section */
148: if (*line == '[') {
149: AIT_SET_STR(&av->cfg_val, line);
150: psAttr = line + strlen(line) - 1;
151: if (*psAttr == ']') {
152: *psAttr = 0;
153: flg = 0;
154: strlcpy(szSection, line + 1, sizeof szSection);
155: } else
156: ioDEBUG(7, "Ignore section '%s' ... not found ']'", line);
157: continue;
158: }
159: /* parse pair */
160: if (!(psAttr = strchr(line, '='))) {
161: AIT_SET_STR(&av->cfg_val, line);
162: ioDEBUG(7, "Ignore a/v '%s' ... not found '='", line);
163: continue;
164: } else {
165: *psAttr = 0;
166: psVal = psAttr + 1;
167: psAttr = line;
168: }
169:
170: /* if exists, added section name to element */
171: if (*szSection) {
172: AIT_SET_STR(&av->cfg_sec, szSection);
173: AIT_KEY(&av->cfg_sec) = crcFletcher16(AIT_GET_LIKE(&av->cfg_sec, u_short*),
174: io_align(AIT_LEN(&av->cfg_sec) - 1, 1) / 2);
175: }
176:
177: io_RTrimStr(psAttr);
178: io_LTrimStr(psVal);
179: if (!flg)
180: io_UnquotStr(psVal);
181: AIT_SET_STR(&av->cfg_val, psVal);
182: AIT_SET_STR(&av->cfg_attr, psAttr);
183: AIT_KEY(&av->cfg_attr) = crcFletcher16(AIT_GET_LIKE(&av->cfg_attr, u_short*),
184: io_align(AIT_LEN(&av->cfg_attr) - 1, 1) / 2);
185:
186: CFG_RC_LOCK(cfg);
187: RB_INSERT(tagRC, cfg, av);
188: CFG_RC_UNLOCK(cfg);
189: }
190:
191: return 0;
192: }
193:
194: /*
195: * cfgWriteConfig() - Write config from memory
196: *
197: * @f = File handle
198: * @cfg = Config root
199: * @whitespace = Additional whitespace characters to file
200: * return: -1 error or 0 ok
201: */
202: int
203: cfgWriteConfig(FILE *f, cfg_root_t * __restrict cfg, int whitespace)
204: {
205: struct tagCfg *av;
206: time_t tim;
207: char line[BUFSIZ] = { 0 }, szSection[STRSIZ] = { 0 };
208:
209: CFG_RC_LOCK(cfg);
210: _invertQueue(cfg);
211: SLIST_FOREACH(av, cfg, cfg_next) {
212: /* add +1 line for section [] */
213: if (!AIT_ISEMPTY(&av->cfg_sec) &&
214: strcmp(AIT_GET_STR(&av->cfg_sec), szSection)) {
215: strlcpy(szSection, AIT_GET_STR(&av->cfg_sec), sizeof szSection);
216: if (!cfg_Write(f, "\n[%s]\n", AIT_GET_STR(&av->cfg_sec))) {
217: LOGERR;
218: CFG_RC_UNLOCK(cfg);
219: return -1;
220: }
221: }
222: if (AIT_ISEMPTY(&av->cfg_sec) && *szSection) {
223: memset(szSection, 0, sizeof szSection);
224: if (!cfg_Write(f, "\n[]\n")) {
225: LOGERR;
226: CFG_RC_UNLOCK(cfg);
227: return -1;
228: }
229: }
230:
231: /* build line */
232: memset(line, 0, sizeof line);
233: if (!AIT_ISEMPTY(&av->cfg_attr) && AIT_TYPE(&av->cfg_attr) == string) {
234: strlcpy(line, AIT_GET_STR(&av->cfg_attr), sizeof line);
235: if (whitespace)
236: strlcat(line, " = ", sizeof line);
237: else
238: strlcat(line, "=", sizeof line);
239: }
240: if (!AIT_ISEMPTY(&av->cfg_val) && AIT_TYPE(&av->cfg_val) == string)
241: strlcat(line, AIT_GET_STR(&av->cfg_val), sizeof line);
242:
243: /* write */
244: if (!cfg_Write(f, "%s\n", line)) {
245: LOGERR;
246: CFG_RC_UNLOCK(cfg);
247: return -1;
248: }
249: }
250: _invertQueue(cfg);
251: CFG_RC_UNLOCK(cfg);
252:
253: if (whitespace) {
254: time(&tim);
255: memset(line, 0, sizeof line);
256: strftime(line, sizeof line, "(UTC) %Y-%m-%d %H:%M:%S", gmtime(&tim));
257: cfg_Write(f, "\n## Config was saved at :: %s ##\n", line);
258: }
259:
260: return 0;
261: }
262:
263: /*
264: * cfgConcatConfig() - Concat two configs into one
265: *
266: * @cfg = Config root
267: * @add_cfg = Concated config will be destroy after merge
268: * return: -1 error or 0 ok
269: */
270: int
271: cfgConcatConfig(cfg_root_t * __restrict cfg, cfg_root_t * __restrict add_cfg)
272: {
273: struct tagCfg *item;
274:
275: if (!cfg || !add_cfg)
276: return -1;
277:
278: CFG_RC_LOCK(add_cfg);
279: CFG_RC_LOCK(cfg);
280:
281: /* concat lists */
282: for (item = SLIST_FIRST(cfg); SLIST_NEXT(item, cfg_next); item = SLIST_NEXT(item, cfg_next));
283: SLIST_NEXT(item, cfg_next) = SLIST_FIRST(add_cfg);
284:
285: /* concat red-black trees */
286: SLIST_FOREACH(item, add_cfg, cfg_next)
287: RB_INSERT(tagRC, cfg, item);
288:
289: CFG_RC_UNLOCK(cfg);
290: CFG_RC_UNLOCK(add_cfg);
291:
292: add_cfg->slh_first = NULL;
293: add_cfg->rbh_root = NULL;
294: pthread_mutex_destroy(&add_cfg->rc_mtx);
295: return 0;
296: }
297:
298: /*
299: * cfgMergeConfig() - Marge two list in one cfg and destroy add_cfg
300: *
301: * @cfg = Config root of main list
302: * @add_cfg = Merged config will be destroy after merge
303: * return: -1 error or 0 ok
304: */
305: int
306: cfgMergeConfig(cfg_root_t * __restrict cfg, cfg_root_t * __restrict add_cfg)
307: {
308: struct tagCfg *item, *merge, *add_next, *next = NULL;
309: int flg;
310:
311: if (!cfg || !add_cfg)
312: return -1;
313:
314: CFG_RC_LOCK(add_cfg);
315: CFG_RC_LOCK(cfg);
316: SLIST_FOREACH_SAFE(item, add_cfg, cfg_next, add_next) {
317: flg = 0;
318: SLIST_FOREACH_SAFE(merge, cfg, cfg_next, next) {
319: if (AIT_ISEMPTY(&merge->cfg_sec) && AIT_ISEMPTY(&item->cfg_sec)) {
320: SLIST_INSERT_AFTER(merge, item, cfg_next);
321: RB_INSERT(tagRC, cfg, item);
322: flg = 1;
323: break;
324: }
325: if (!AIT_ISEMPTY(&merge->cfg_sec) && !AIT_ISEMPTY(&item->cfg_sec) &&
326: !strcmp(AIT_GET_STR(&merge->cfg_sec), AIT_GET_STR(&item->cfg_sec))) {
327: SLIST_INSERT_AFTER(merge, item, cfg_next);
328: RB_INSERT(tagRC, cfg, item);
329: flg = 1;
330: break;
331: }
332: }
333:
334: if (!flg) {
335: SLIST_INSERT_AFTER(merge, item, cfg_next);
336: RB_INSERT(tagRC, cfg, item);
337: }
338: }
339: CFG_RC_UNLOCK(cfg);
340: CFG_RC_UNLOCK(add_cfg);
341:
342: add_cfg->slh_first = NULL;
343: add_cfg->rbh_root = NULL;
344: pthread_mutex_destroy(&add_cfg->rc_mtx);
345: return 0;
346: }
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