1: /*************************************************************************
2: * (C) 2010 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
3: * by Michael Pounov <misho@openbsd-bg.org>
4: *
5: * $Author: misho $
6: * $Id: pq.c,v 1.1.2.1 2012/09/18 15:50:59 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:
48:
49: static inline struct tagUser *
50: _selectAttribute(pwd_root_t * __restrict pwd, u_int uid, const char *csName)
51: {
52: struct tagUser fu;
53:
54: if (!pwd)
55: return NULL;
56: else
57: memset(&fu, 0, sizeof fu);
58:
59: if (csName) {
60: io_setlikeVar(&fu.usr_name, string, strlen(csName) + 1, csName);
61: return RB_FIND(tagPWD, pwd, &fu);
62: }
63:
64: return cfg_findPasswdBy(pwd, PWD_CRIT_UID, uid);
65: }
66:
67: /* --------------------------------------------------------------- */
68:
69: /*
70: * cfg_findPasswdBy() - Find user by criteria position in list
71: *
72: * @pwd = Password root
73: * @criteria = Search criteria [PWD_CRIT_NAME|PWD_CRIT_UID|PWD_CRIT_GID]
74: * @arg1 = Username | UID | GID
75: * return: NULL not found item or error and !=NULL found item
76: */
77: struct tagUser *
78: cfg_findPasswdBy(pwd_root_t * __restrict pwd, int criteria, ...)
79: {
80: struct tagUser *u;
81: va_list lst;
82: ait_val_t v;
83:
84: if (!pwd)
85: return NULL;
86:
87: va_start(lst, criteria);
88: switch (criteria) {
89: case PWD_CRIT_NAME:
90: AIT_SET_STR(&v, va_arg(lst, char*));
91: break;
92: case PWD_CRIT_UID:
93: case PWD_CRIT_GID:
94: AIT_SET_U32(&v, va_arg(lst, u_int));
95: break;
96: default:
97: return NULL;
98: }
99: va_end(lst);
100:
101: SLIST_FOREACH(u, pwd, usr_next)
102: switch (criteria) {
103: case PWD_CRIT_NAME:
104: if (!io_cmpVar(&u->usr_name, &v)) {
105: AIT_FREE_VAL(&v);
106: return u;
107: }
108: break;
109: case PWD_CRIT_UID:
110: if (AIT_GET_U32(&u->usr_uid) == AIT_GET_U32(&v)) {
111: AIT_FREE_VAL(&v);
112: return u;
113: }
114: break;
115: case PWD_CRIT_GID:
116: if (AIT_GET_U32(&u->usr_gid) == AIT_GET_U32(&v)) {
117: AIT_FREE_VAL(&v);
118: return u;
119: }
120: break;
121: }
122:
123: AIT_FREE_VAL(&v);
124: return NULL;
125: }
126:
127: /*
128: * cfg_unsetPasswd() - Unset item from passwords and free resources
129: *
130: * @pwd = Password root
131: * @criteria = Search criteria [PWD_CRIT_NAME|PWD_CRIT_UID]
132: * @arg1 = Username | UID
133: * return: 0 item not found, -1 error or 1 removed item
134: */
135: int
136: cfg_unsetPasswd(pwd_root_t * __restrict pwd, int criteria, ...)
137: {
138: struct tagUser *u;
139: va_list lst;
140:
141: if (!pwd)
142: return -1;
143:
144: va_start(lst, criteria);
145: switch (criteria) {
146: case PWD_CRIT_NAME:
147: u = _selectAttribute(pwd, 0, va_arg(lst, char*));
148: break;
149: case PWD_CRIT_UID:
150: u = _selectAttribute(pwd, va_arg(lst, u_int), NULL);
151: break;
152: default:
153: va_end(lst);
154: return -1;
155: }
156: va_end(lst);
157: if (!u)
158: return 0;
159:
160: PWD_LOCK(pwd);
161: RB_REMOVE(tagPWD, pwd, u);
162: SLIST_REMOVE(pwd, u, tagUser, usr_next);
163: PWD_UNLOCK(pwd);
164:
165: AIT_FREE_VAL(&u->usr_name);
166: AIT_FREE_VAL(&u->usr_pass);
167: AIT_FREE_VAL(&u->usr_uid);
168: AIT_FREE_VAL(&u->usr_gid);
169: AIT_FREE_VAL(&u->usr_class);
170: AIT_FREE_VAL(&u->usr_change);
171: AIT_FREE_VAL(&u->usr_expire);
172: AIT_FREE_VAL(&u->usr_realm);
173: AIT_FREE_VAL(&u->usr_home);
174: AIT_FREE_VAL(&u->usr_shell);
175: io_free(u);
176: return 1;
177: }
178:
179: #if 0
180: /*
181: * cfg_setAttribute() - Set item in config or adding new item if not exists
182: *
183: * @cfg = Config root
184: * @csSec = Config section //[{csSec}], if NULL set in *default* section
185: * @csAttr = Config attribute //{csAttr} = ...
186: * @csVal = Config value //... = {csVal} to setup
187: * return: 0 nothing changed, -1 error, 1 found and updated item or 2 added new item
188: */
189: int
190: cfg_setAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr, const char *csVal)
191: {
192: struct tagCfg *av, *section;
193:
194: if (!cfg || !csAttr)
195: return -1;
196:
197: av = _selectAttribute(cfg, csSec, csAttr);
198: if (!av) {
199: /* adding new element */
200: section = _selectAttribute(cfg, csSec, NULL);
201:
202: av = io_malloc(sizeof(struct tagCfg));
203: if (!av) {
204: LOGERR;
205: return -1;
206: } else {
207: memset(av, 0, sizeof(struct tagCfg));
208:
209: CFG_RC_LOCK(cfg);
210: if (!section)
211: SLIST_INSERT_HEAD(cfg, av, cfg_next);
212: else
213: SLIST_INSERT_AFTER(section, av, cfg_next);
214: CFG_RC_UNLOCK(cfg);
215: }
216:
217: if (csSec && *csSec) {
218: AIT_SET_STR(&av->cfg_sec, csSec);
219: AIT_KEY(&av->cfg_sec) = crcFletcher16(AIT_GET_LIKE(&av->cfg_sec, u_short*),
220: io_align(AIT_LEN(&av->cfg_sec) - 1, 2) / 2);
221: }
222: AIT_SET_STR(&av->cfg_val, csVal ? csVal : "");
223: AIT_SET_STR(&av->cfg_attr, csAttr);
224: AIT_KEY(&av->cfg_attr) = crcFletcher16(AIT_GET_LIKE(&av->cfg_attr, u_short*),
225: io_align(AIT_LEN(&av->cfg_attr) - 1, 2) / 2);
226:
227: CFG_RC_LOCK(cfg);
228: RB_INSERT(tagRC, cfg, av);
229: CFG_RC_UNLOCK(cfg);
230: return 2;
231: }
232:
233: if (csVal && AIT_ADDR(&av->cfg_val) &&
234: strcmp((char*) csVal, (char*) AIT_GET_STR(&av->cfg_val))) {
235: /* Update element */
236: AIT_FREE_VAL(&av->cfg_val);
237: AIT_SET_STR(&av->cfg_val, csVal);
238: return 1;
239: }
240:
241: /* Nothing happens ... found & values is equal! */
242: return 0;
243: }
244:
245: /*
246: * cfg_getAttribute() - Get item from config and return value from it
247: *
248: * @cfg = Config root
249: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
250: * @csAttr = Config attribute //{csAttr} = ..., if NULL unset as *any* attribute
251: * return: NULL item not found or null parameters, !=NULL value const string
252: */
253: inline const char *
254: cfg_getAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
255: {
256: struct tagCfg *av;
257:
258: if (!cfg || !csAttr)
259: return NULL;
260:
261: av = _selectAttribute(cfg, csSec, csAttr);
262: if (!av)
263: return NULL;
264:
265: return AIT_GET_STR(&av->cfg_val);
266: }
267:
268: /*
269: * cfg_loadAttribute() - Get guarded attribute, if not found item return *default value*
270: *
271: * @cfg = Config root
272: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
273: * @csAttr = Config attribute //{csAttr} = ...
274: * @val = Return buffer for item Value //... = {val}
275: * @csDefValue = *Default Value* for return in //{val}, if not found item in config
276: * return: 0 item not found, -1 error or >0 number of copied bytes in //{val}
277: */
278: int
279: cfg_loadAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr,
280: ait_val_t * __restrict val, const char *csDefValue)
281: {
282: struct tagCfg *av;
283: int ret = 0;
284:
285: if (!cfg || !csAttr || !val) {
286: cfg_SetErr(EINVAL, "Invalid argument(s)");
287: return -1;
288: }
289:
290: AIT_INIT_VAL(val);
291: av = _selectAttribute(cfg, csSec, csAttr);
292: if (!av) {
293: /* not found item */
294: if (csDefValue) {
295: AIT_SET_STR(val, csDefValue);
296: ret = AIT_LEN(val);
297: } else
298: AIT_INIT_VAL(val);
299: return ret;
300: }
301:
302: if (AIT_ISEMPTY(&av->cfg_val) || !AIT_ADDR(&av->cfg_val) ||
303: !*AIT_GET_LIKE(&av->cfg_val, char*)) {
304: /* empty value */
305: if (csDefValue) {
306: AIT_SET_STR(val, csDefValue);
307: ret = AIT_LEN(val);
308: } else
309: AIT_INIT_VAL(val);
310: } else {
311: /* copy value */
312: AIT_SET_STR(val, AIT_GET_STR(&av->cfg_val));
313: ret = AIT_LEN(val);
314: }
315:
316: return ret;
317: }
318: #endif
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