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 1.14 2019/12/05 14:33:35 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 - 2019
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: 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: 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) << 15) | AIT_KEY(&a->cfg_attr)) -
75: ((AIT_KEY(&b->cfg_sec) << 15) | 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: int
92: cfg_GetErrno()
93: {
94: return cfg_Errno;
95: }
96:
97: // cfg_GetError() Get error text of last operation
98: const char *
99: cfg_GetError()
100: {
101: return cfg_Error;
102: }
103:
104: // cfg_SetErr() Set error to variables for internal use!!!
105: 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: * return: NULL error or !=NULL allocated config root
122: */
123: cfg_root_t *
124: cfgInitConfig()
125: {
126: cfg_root_t *cfg = NULL;
127:
128: cfg = e_malloc(sizeof(cfg_root_t));
129: if (!cfg) {
130: cfg_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
131: return NULL;
132: } else
133: memset(cfg, 0, sizeof(cfg_root_t));
134:
135: pthread_mutex_init(&cfg->rc_mtx, NULL);
136:
137: TAILQ_INIT(cfg);
138: RB_INIT(cfg);
139: return cfg;
140: }
141:
142: /*
143: * cfgEndConfig() - Free resources & config root
144: *
145: * @pcfg = Config root
146: * return: none
147: */
148: void
149: cfgEndConfig(cfg_root_t **pcfg)
150: {
151: if (pcfg && *pcfg) {
152: cfgClearConfig(*pcfg);
153: pthread_mutex_destroy(&(*pcfg)->rc_mtx);
154: e_free(*pcfg);
155: *pcfg = NULL;
156: }
157: }
158:
159: /*
160: * cfgLoadConfig() - Load config from file
161: *
162: * @cfgName = Config filename
163: * @cfg = Config root
164: * return: -1 error or 0 ok
165: */
166: int
167: cfgLoadConfig(const char *cfgName, cfg_root_t * __restrict cfg)
168: {
169: FILE *f;
170: int ret;
171:
172: if (!cfgName || !cfg) {
173: cfg_SetErr(EINVAL, "Invalid parameter(s)");
174: return -1;
175: } else {
176: pthread_mutex_init(&cfg->rc_mtx, NULL);
177:
178: TAILQ_INIT(cfg);
179: RB_INIT(cfg);
180: }
181:
182: f = fopen(cfgName, "r");
183: if (!f) {
184: LOGERR;
185: return -1;
186: }
187:
188: ret = cfgReadConfig(f, cfg);
189:
190: fclose(f);
191: return ret;
192: }
193:
194: /*
195: * cfgClearConfig() - Clear config and free resources
196: *
197: * @cfg = Config root
198: * return: none
199: */
200: void
201: cfgClearConfig(cfg_root_t * __restrict cfg)
202: {
203: struct tagCfg *av;
204:
205: if (!cfg)
206: return;
207:
208: CFG_RC_LOCK(cfg);
209: while ((av = TAILQ_FIRST(cfg))) {
210: TAILQ_REMOVE(cfg, av, cfg_next);
211:
212: AIT_FREE_VAL(&av->cfg_val);
213: AIT_FREE_VAL(&av->cfg_attr);
214: AIT_FREE_VAL(&av->cfg_sec);
215: e_free(av);
216: }
217: cfg->rbh_root = NULL;
218: CFG_RC_UNLOCK(cfg);
219: }
220:
221: /*
222: * cfgUnloadConfig() - Unload config from memory and destroy resources
223: *
224: * @cfg = Config root
225: * return: none
226: */
227: void
228: cfgUnloadConfig(cfg_root_t * __restrict cfg)
229: {
230: if (!cfg)
231: return;
232:
233: cfgClearConfig(cfg);
234: pthread_mutex_destroy(&cfg->rc_mtx);
235: }
236:
237: /*
238: * cfgCreateConfig() - Create config file from memory
239: *
240: * @csConfigName = New config filename
241: * @cfg = Config root
242: * @whitespace = Additional whitespace characters to file
243: * return: -1 error or 0 ok
244: */
245: int
246: cfgCreateConfig(const char *csConfigName, cfg_root_t * __restrict cfg, int whitespace)
247: {
248: FILE *f;
249: int ret;
250:
251: if (!csConfigName || !cfg)
252: return -1;
253:
254: f = fopen(csConfigName, "w");
255: if (!f) {
256: LOGERR;
257: return -1;
258: }
259:
260: ret = cfgWriteConfig(f, cfg, whitespace);
261:
262: fclose(f);
263: return ret;
264: }
265:
266: /*
267: * cfgInitPasswd() - Init password root
268: *
269: * return: NULL error or !=NULL allocated password root
270: */
271: pwd_root_t *
272: cfgInitPasswd()
273: {
274: pwd_root_t *pwd = NULL;
275:
276: pwd = e_malloc(sizeof(pwd_root_t));
277: if (!pwd) {
278: cfg_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
279: return NULL;
280: } else
281: memset(pwd, 0, sizeof(pwd_root_t));
282:
283: pthread_mutex_init(&pwd->pwd_mtx, NULL);
284:
285: SLIST_INIT(pwd);
286: RB_INIT(pwd);
287: return 0;
288: }
289:
290: /*
291: * cfgEndPasswd() - Free resources & password root
292: *
293: * @ppwd = Password root
294: * return: none
295: */
296: void
297: cfgEndPasswd(pwd_root_t **ppwd)
298: {
299: if (ppwd && *ppwd) {
300: cfgClearPasswd(*ppwd);
301: pthread_mutex_destroy(&(*ppwd)->pwd_mtx);
302: e_free(*ppwd);
303: *ppwd = NULL;
304: }
305: }
306:
307: /*
308: * cfgLoadPasswd() - Load passwords from file
309: *
310: * @pwdName = Passwords filename
311: * @pwd = Password root
312: * return: -1 error or 0 ok
313: */
314: int
315: cfgLoadPasswd(const char *pwdName, pwd_root_t * __restrict pwd)
316: {
317: FILE *f;
318: int ret;
319:
320: if (!pwdName || !pwd) {
321: cfg_SetErr(EINVAL, "Invalid parameter(s)");
322: return -1;
323: } else {
324: pthread_mutex_init(&pwd->pwd_mtx, NULL);
325:
326: SLIST_INIT(pwd);
327: RB_INIT(pwd);
328: }
329:
330: f = fopen(pwdName, "r");
331: if (!f) {
332: LOGERR;
333: return -1;
334: }
335:
336: ret = cfgReadPasswd(f, pwd);
337:
338: fclose(f);
339: return ret;
340: }
341:
342: /*
343: * cfgClearPasswd() - Clear passwords and free resources
344: *
345: * @cfg = Password root
346: * return: none
347: */
348: void
349: cfgClearPasswd(pwd_root_t * __restrict pwd)
350: {
351: struct tagUser *p;
352:
353: if (!pwd)
354: return;
355:
356: PWD_LOCK(pwd);
357: while ((p = SLIST_FIRST(pwd))) {
358: SLIST_REMOVE_HEAD(pwd, usr_next);
359:
360: AIT_FREE_VAL(&p->usr_name);
361: AIT_FREE_VAL(&p->usr_pass);
362: AIT_FREE_VAL(&p->usr_uid);
363: AIT_FREE_VAL(&p->usr_gid);
364: AIT_FREE_VAL(&p->usr_class);
365: AIT_FREE_VAL(&p->usr_change);
366: AIT_FREE_VAL(&p->usr_expire);
367: AIT_FREE_VAL(&p->usr_realm);
368: AIT_FREE_VAL(&p->usr_home);
369: AIT_FREE_VAL(&p->usr_shell);
370: e_free(p);
371: }
372: pwd->rbh_root = NULL;
373: PWD_UNLOCK(pwd);
374: }
375:
376: /*
377: * cfgUnloadPasswd() - Unload passwords from memory and destroy resources
378: *
379: * @pwd = Password root
380: * return: none
381: */
382: void
383: cfgUnloadPasswd(pwd_root_t * __restrict pwd)
384: {
385: if (!pwd)
386: return;
387:
388: cfgClearPasswd(pwd);
389: pthread_mutex_destroy(&pwd->pwd_mtx);
390: }
391:
392: /*
393: * cfgCreatePasswd() - Create password file from memory
394: *
395: * @pwdName = New password filename
396: * @pwd = Password root
397: * return: -1 error or 0 ok
398: */
399: int
400: cfgCreatePasswd(const char *pwdName, pwd_root_t * __restrict pwd)
401: {
402: FILE *f;
403: int ret;
404:
405: if (!pwdName || !pwd)
406: return -1;
407:
408: f = fopen(pwdName, "w");
409: if (!f) {
410: LOGERR;
411: return -1;
412: }
413:
414: ret = cfgWritePasswd(f, pwd);
415:
416: fclose(f);
417: return ret;
418: }
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