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: aitcfg.c,v 1.7 2012/07/25 15:24:20 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: #pragma GCC visibility push(hidden)
51:
52: int cfg_Errno;
53: char cfg_Error[STRSIZ];
54:
55: inline int
56: cfg_tree_cmp(struct tagCfg *a, struct tagCfg *b)
57: {
58: int ret;
59:
60: assert(a && b);
61:
62: ret = ((AIT_KEY(&a->cfg_sec) << 16) | AIT_KEY(&a->cfg_attr)) -
63: ((AIT_KEY(&b->cfg_sec) << 16) | AIT_KEY(&b->cfg_attr));
64:
65: if (ret < 0)
66: return -1;
67: else if (ret > 0)
68: return 1;
69:
70: return ret;
71: }
72:
73: RB_GENERATE(tagRC, tagCfg, cfg_node, cfg_tree_cmp);
74:
75: #pragma GCC visibility pop
76:
77:
78: // cfg_GetErrno() Get error code of last operation
79: inline int
80: cfg_GetErrno()
81: {
82: return cfg_Errno;
83: }
84:
85: // cfg_GetError() Get error text of last operation
86: inline const char *
87: cfg_GetError()
88: {
89: return cfg_Error;
90: }
91:
92: // cfg_SetErr() Set error to variables for internal use!!!
93: inline void
94: cfg_SetErr(int eno, char *estr, ...)
95: {
96: va_list lst;
97:
98: cfg_Errno = eno;
99: memset(cfg_Error, 0, sizeof cfg_Error);
100: va_start(lst, estr);
101: vsnprintf(cfg_Error, sizeof cfg_Error, estr, lst);
102: va_end(lst);
103: }
104:
105:
106: /*
107: * cfgInitConfig() - Init config root
108: *
109: * @cfg = Config root
110: * return: -1 error or 0 ok
111: */
112: int
113: cfgInitConfig(cfg_root_t * __restrict cfg)
114: {
115: if (!cfg)
116: return -1;
117:
118: pthread_mutex_init(&cfg->rc_mtx, NULL);
119:
120: SLIST_INIT(cfg);
121: RB_INIT(cfg);
122: return 0;
123: }
124:
125: /*
126: * cfgLoadConfig() - Load config from file
127: *
128: * @cfgName = Config filename
129: * @cfg = Config root
130: * return: -1 error or 0 ok
131: */
132: int
133: cfgLoadConfig(const char *cfgName, cfg_root_t * __restrict cfg)
134: {
135: FILE *f;
136: int ret;
137:
138: if (!cfgName || !cfg) {
139: cfg_SetErr(EINVAL, "Invalid parameter(s)");
140: return -1;
141: } else
142: cfgInitConfig(cfg);
143:
144: f = fopen(cfgName, "r");
145: if (!f) {
146: LOGERR;
147: return -1;
148: }
149:
150: ret = cfgReadConfig(f, cfg);
151:
152: fclose(f);
153: return ret;
154: }
155:
156: /*
157: * cfgClearConfig() - Clear config and free resources
158: *
159: * @cfg = Config root
160: * return: none
161: */
162: void
163: cfgClearConfig(cfg_root_t * __restrict cfg)
164: {
165: struct tagCfg *av;
166:
167: if (!cfg)
168: return;
169:
170: CFG_RC_LOCK(cfg);
171: while ((av = SLIST_FIRST(cfg))) {
172: SLIST_REMOVE_HEAD(cfg, cfg_next);
173:
174: AIT_FREE_VAL(&av->cfg_val);
175: AIT_FREE_VAL(&av->cfg_attr);
176: AIT_FREE_VAL(&av->cfg_sec);
177: io_free(av);
178: }
179: cfg->rbh_root = NULL;
180: CFG_RC_UNLOCK(cfg);
181: }
182:
183: /*
184: * cfgUnloadConfig() - Unload config from memory and destroy resources
185: *
186: * @cfg = Config root
187: * return: none
188: */
189: void
190: cfgUnloadConfig(cfg_root_t * __restrict cfg)
191: {
192: if (!cfg)
193: return;
194:
195: cfgClearConfig(cfg);
196: pthread_mutex_destroy(&cfg->rc_mtx);
197: }
198:
199: /*
200: * cfgCreateConfig() - Create config file from memory
201: *
202: * @csConfigName = New config filename
203: * @cfg = Config root
204: * @whitespace = Additional whitespace characters to file
205: * return: -1 error or 0 ok
206: */
207: int
208: cfgCreateConfig(const char *csConfigName, cfg_root_t * __restrict cfg, int whitespace)
209: {
210: FILE *f;
211: int ret;
212:
213: if (!csConfigName || !cfg)
214: return -1;
215:
216: f = fopen(csConfigName, "w");
217: if (!f) {
218: LOGERR;
219: return -1;
220: }
221:
222: ret = cfgWriteConfig(f, cfg, whitespace);
223:
224: fclose(f);
225: return ret;
226: }
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