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 1.8.4.1 2013/01/17 13:42:10 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, 2013
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: #pragma GCC visibility push(hidden)
50:
51: int cfg_Errno;
52: char cfg_Error[STRSIZ];
53:
54: inline int
55: cfg_Write(FILE *f, char *fmt, ...)
56: {
57: int ret = 0;
58: va_list lst;
59:
60: va_start(lst, fmt);
61: ret = vfprintf(f, fmt, lst);
62: va_end(lst);
63:
64: return ret;
65: }
66:
67: inline int
68: cfg_tree_cmp(struct tagCfg *a, struct tagCfg *b)
69: {
70: int ret;
71:
72: assert(a && b);
73:
74: ret = ((AIT_KEY(&a->cfg_sec) << 16) | AIT_KEY(&a->cfg_attr)) -
75: ((AIT_KEY(&b->cfg_sec) << 16) | AIT_KEY(&b->cfg_attr));
76:
77: if (ret < 0)
78: return -1;
79: else if (ret > 0)
80: return 1;
81:
82: return ret;
83: }
84:
85: RB_GENERATE(tagRC, tagCfg, cfg_node, cfg_tree_cmp);
86:
87: #pragma GCC visibility pop
88:
89:
90: // cfg_GetErrno() Get error code of last operation
91: inline int
92: cfg_GetErrno()
93: {
94: return cfg_Errno;
95: }
96:
97: // cfg_GetError() Get error text of last operation
98: inline const char *
99: cfg_GetError()
100: {
101: return cfg_Error;
102: }
103:
104: // cfg_SetErr() Set error to variables for internal use!!!
105: inline void
106: cfg_SetErr(int eno, char *estr, ...)
107: {
108: va_list lst;
109:
110: cfg_Errno = eno;
111: memset(cfg_Error, 0, sizeof cfg_Error);
112: va_start(lst, estr);
113: vsnprintf(cfg_Error, sizeof cfg_Error, estr, lst);
114: va_end(lst);
115: }
116:
117:
118: /*
119: * cfgInitConfig() - Init config root
120: *
121: * @cfg = Config root
122: * return: -1 error or 0 ok
123: */
124: int
125: cfgInitConfig(cfg_root_t * __restrict cfg)
126: {
127: if (!cfg)
128: return -1;
129:
130: pthread_mutex_init(&cfg->rc_mtx, NULL);
131:
132: SLIST_INIT(cfg);
133: RB_INIT(cfg);
134: return 0;
135: }
136:
137: /*
138: * cfgLoadConfig() - Load config from file
139: *
140: * @cfgName = Config filename
141: * @cfg = Config root
142: * return: -1 error or 0 ok
143: */
144: int
145: cfgLoadConfig(const char *cfgName, cfg_root_t * __restrict cfg)
146: {
147: FILE *f;
148: int ret;
149:
150: if (!cfgName || !cfg) {
151: cfg_SetErr(EINVAL, "Invalid parameter(s)");
152: return -1;
153: } else
154: cfgInitConfig(cfg);
155:
156: f = fopen(cfgName, "r");
157: if (!f) {
158: LOGERR;
159: return -1;
160: }
161:
162: ret = cfgReadConfig(f, cfg);
163:
164: fclose(f);
165: return ret;
166: }
167:
168: /*
169: * cfgClearConfig() - Clear config and free resources
170: *
171: * @cfg = Config root
172: * return: none
173: */
174: void
175: cfgClearConfig(cfg_root_t * __restrict cfg)
176: {
177: struct tagCfg *av;
178:
179: if (!cfg)
180: return;
181:
182: CFG_RC_LOCK(cfg);
183: while ((av = SLIST_FIRST(cfg))) {
184: SLIST_REMOVE_HEAD(cfg, cfg_next);
185:
186: AIT_FREE_VAL(&av->cfg_val);
187: AIT_FREE_VAL(&av->cfg_attr);
188: AIT_FREE_VAL(&av->cfg_sec);
189: e_free(av);
190: }
191: cfg->rbh_root = NULL;
192: CFG_RC_UNLOCK(cfg);
193: }
194:
195: /*
196: * cfgUnloadConfig() - Unload config from memory and destroy resources
197: *
198: * @cfg = Config root
199: * return: none
200: */
201: void
202: cfgUnloadConfig(cfg_root_t * __restrict cfg)
203: {
204: if (!cfg)
205: return;
206:
207: cfgClearConfig(cfg);
208: pthread_mutex_destroy(&cfg->rc_mtx);
209: }
210:
211: /*
212: * cfgCreateConfig() - Create config file from memory
213: *
214: * @csConfigName = New config filename
215: * @cfg = Config root
216: * @whitespace = Additional whitespace characters to file
217: * return: -1 error or 0 ok
218: */
219: int
220: cfgCreateConfig(const char *csConfigName, cfg_root_t * __restrict cfg, int whitespace)
221: {
222: FILE *f;
223: int ret;
224:
225: if (!csConfigName || !cfg)
226: return -1;
227:
228: f = fopen(csConfigName, "w");
229: if (!f) {
230: LOGERR;
231: return -1;
232: }
233:
234: ret = cfgWriteConfig(f, cfg, whitespace);
235:
236: fclose(f);
237: return ret;
238: }
239:
240: /*
241: * cfgInitPasswd() - Init password root
242: *
243: * @pwd = Password root
244: * return: -1 error or 0 ok
245: */
246: int
247: cfgInitPasswd(pwd_root_t * __restrict pwd)
248: {
249: if (!pwd)
250: return -1;
251:
252: pthread_mutex_init(&pwd->pwd_mtx, NULL);
253:
254: SLIST_INIT(pwd);
255: RB_INIT(pwd);
256: return 0;
257: }
258:
259: /*
260: * cfgLoadPasswd() - Load passwords from file
261: *
262: * @pwdName = Passwords filename
263: * @pwd = Password root
264: * return: -1 error or 0 ok
265: */
266: int
267: cfgLoadPasswd(const char *pwdName, pwd_root_t * __restrict pwd)
268: {
269: FILE *f;
270: int ret;
271:
272: if (!pwdName || !pwd) {
273: cfg_SetErr(EINVAL, "Invalid parameter(s)");
274: return -1;
275: } else
276: cfgInitPasswd(pwd);
277:
278: f = fopen(pwdName, "r");
279: if (!f) {
280: LOGERR;
281: return -1;
282: }
283:
284: ret = cfgReadPasswd(f, pwd);
285:
286: fclose(f);
287: return ret;
288: }
289:
290: /*
291: * cfgClearPasswd() - Clear passwords and free resources
292: *
293: * @cfg = Password root
294: * return: none
295: */
296: void
297: cfgClearPasswd(pwd_root_t * __restrict pwd)
298: {
299: struct tagUser *p;
300:
301: if (!pwd)
302: return;
303:
304: PWD_LOCK(pwd);
305: while ((p = SLIST_FIRST(pwd))) {
306: SLIST_REMOVE_HEAD(pwd, usr_next);
307:
308: AIT_FREE_VAL(&p->usr_name);
309: AIT_FREE_VAL(&p->usr_pass);
310: AIT_FREE_VAL(&p->usr_uid);
311: AIT_FREE_VAL(&p->usr_gid);
312: AIT_FREE_VAL(&p->usr_class);
313: AIT_FREE_VAL(&p->usr_change);
314: AIT_FREE_VAL(&p->usr_expire);
315: AIT_FREE_VAL(&p->usr_realm);
316: AIT_FREE_VAL(&p->usr_home);
317: AIT_FREE_VAL(&p->usr_shell);
318: e_free(p);
319: }
320: pwd->rbh_root = NULL;
321: PWD_UNLOCK(pwd);
322: }
323:
324: /*
325: * cfgUnloadPasswd() - Unload passwords from memory and destroy resources
326: *
327: * @pwd = Password root
328: * return: none
329: */
330: void
331: cfgUnloadPasswd(pwd_root_t * __restrict pwd)
332: {
333: if (!pwd)
334: return;
335:
336: cfgClearPasswd(pwd);
337: pthread_mutex_destroy(&pwd->pwd_mtx);
338: }
339:
340: /*
341: * cfgCreatePasswd() - Create password file from memory
342: *
343: * @pwdName = New password filename
344: * @pwd = Password root
345: * return: -1 error or 0 ok
346: */
347: int
348: cfgCreatePasswd(const char *pwdName, pwd_root_t * __restrict pwd)
349: {
350: FILE *f;
351: int ret;
352:
353: if (!pwdName || !pwd)
354: return -1;
355:
356: f = fopen(pwdName, "w");
357: if (!f) {
358: LOGERR;
359: return -1;
360: }
361:
362: ret = cfgWritePasswd(f, pwd);
363:
364: fclose(f);
365: return ret;
366: }
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