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 1.4.4.1 2012/04/02 14:39:02 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: * cfgLoadConfig() - Load config from file
108: *
109: * @cfgName = Config filename
110: * @cfg = Config root
111: * return: -1 error or 0 ok
112: */
113: int
114: cfgLoadConfig(const char *cfgName, cfg_root_t * __restrict cfg)
115: {
116: FILE *f;
117: int ret;
118:
119: if (!cfgName || !cfg) {
120: cfg_SetErr(EINVAL, "Invalid parameter(s)");
121: return -1;
122: } else {
123: #ifdef HAVE_LIBPTHREAD
124: pthread_mutex_init(&cfg->rc_mtx, NULL);
125: #endif
126: SLIST_INIT(cfg);
127: RB_INIT(cfg);
128: }
129:
130: f = fopen(cfgName, "r");
131: if (!f) {
132: LOGERR;
133: return -1;
134: }
135:
136: ret = cfgReadConfig(f, cfg);
137:
138: fclose(f);
139: return ret;
140: }
141:
142: /*
143: * cfgUnloadConfig() - Unload config from memory and free resources
144: *
145: * @cfg = Config root
146: * return: none
147: */
148: void
149: cfgUnloadConfig(cfg_root_t * __restrict cfg)
150: {
151: struct tagCfg *av;
152:
153: if (!cfg)
154: return;
155:
156: CFG_RC_LOCK(cfg);
157: while ((av = SLIST_FIRST(cfg))) {
158: SLIST_REMOVE_HEAD(cfg, cfg_next);
159:
160: AIT_FREE_VAL(&av->cfg_val);
161: AIT_FREE_VAL(&av->cfg_attr);
162: AIT_FREE_VAL(&av->cfg_sec);
163: free(av);
164: }
165: cfg->rbh_root = NULL;
166: CFG_RC_UNLOCK(cfg);
167:
168: #ifdef HAVE_LIBPTHREAD
169: pthread_mutex_destroy(&cfg->rc_mtx);
170: #endif
171: }
172:
173: #if 0
174: /*
175: * CreateConfig() Create config file from memory
176: * @csConfigName = New config filename
177: * @cfg = Head list element
178: * return: 0 ok; -1 error:: can`t save new config
179: */
180: int CreateConfig(const char *csConfigName, sl_config * __restrict cfg)
181: {
182: FILE *f;
183: int ret;
184:
185: if (!csConfigName || !cfg)
186: return -1;
187:
188: f = fopen(csConfigName, "wt");
189: if (!f) {
190: LOGERR;
191: return -1;
192: }
193:
194: ret ^= ret;
195: ret = WriteConfig(f, cfg);
196:
197: fclose(f);
198: return ret;
199: }
200:
201: /*
202: * cfg_CreateConfig() Create config file from memory without whitespaces!
203: * @csConfigName = New config filename
204: * @cfg = Head list element
205: * return: 0 ok; -1 error:: can`t save new config
206: */
207: int cfg_CreateConfig(const char *csConfigName, sl_config * __restrict cfg)
208: {
209: FILE *f;
210: int ret;
211:
212: if (!csConfigName || !cfg)
213: return -1;
214:
215: f = fopen(csConfigName, "wt");
216: if (!f) {
217: LOGERR;
218: return -1;
219: }
220:
221: ret ^= ret;
222: ret = cfg_WriteConfig(f, cfg);
223:
224: fclose(f);
225: return ret;
226: }
227: #endif
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