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 1.4 2013/05/30 09:12:27 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: static inline struct tagUser *
50: _selectPasswd(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: ait_setlikeVar(&fu.usr_name, string, strlen(csName) + 1, csName);
61: return RB_FIND(tagPWD, pwd, &fu);
62: }
63:
64: return (struct tagUser*) 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: const 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: else
87: AIT_INIT_VAL(&v);
88:
89: va_start(lst, criteria);
90: switch (criteria) {
91: case PWD_CRIT_NAME:
92: AIT_SET_STR(&v, va_arg(lst, char*));
93: break;
94: case PWD_CRIT_UID:
95: case PWD_CRIT_GID:
96: AIT_SET_U32(&v, va_arg(lst, u_int));
97: break;
98: default:
99: return NULL;
100: }
101: va_end(lst);
102:
103: SLIST_FOREACH(u, pwd, usr_next)
104: switch (criteria) {
105: case PWD_CRIT_NAME:
106: if (!ait_cmpVar(&u->usr_name, &v)) {
107: AIT_FREE_VAL(&v);
108: return u;
109: }
110: break;
111: case PWD_CRIT_UID:
112: if ((u_int) AIT_RAW(&u->usr_uid) == AIT_GET_U32(&v)) {
113: AIT_FREE_VAL(&v);
114: return u;
115: }
116: break;
117: case PWD_CRIT_GID:
118: if ((u_int) AIT_RAW(&u->usr_gid) == AIT_GET_U32(&v)) {
119: AIT_FREE_VAL(&v);
120: return u;
121: }
122: break;
123: }
124:
125: AIT_FREE_VAL(&v);
126: return NULL;
127: }
128:
129: /*
130: * cfg_unsetPasswd() - Unset item from passwords and free resources
131: *
132: * @pwd = Password root
133: * @criteria = Search criteria [PWD_CRIT_NAME|PWD_CRIT_UID]
134: * @arg1 = Username | UID
135: * return: 0 item not found, -1 error or 1 removed item
136: */
137: int
138: cfg_unsetPasswd(pwd_root_t * __restrict pwd, int criteria, ...)
139: {
140: struct tagUser *u, *u2;
141: va_list lst;
142: u_int n = 0;
143: char *name = NULL;
144:
145: if (!pwd)
146: return -1;
147:
148: va_start(lst, criteria);
149: switch (criteria) {
150: case PWD_CRIT_UID:
151: n = va_arg(lst, u_int);
152: break;
153: case PWD_CRIT_NAME:
154: name = va_arg(lst, char*);
155: if (name)
156: break;
157: default:
158: va_end(lst);
159: return -1;
160: }
161: va_end(lst);
162:
163: u = _selectPasswd(pwd, n, name);
164: if (!u)
165: return 0;
166:
167: PWD_LOCK(pwd);
168: RB_REMOVE(tagPWD, pwd, u);
169: SLIST_REMOVE(pwd, u, tagUser, usr_next);
170:
171: /* if duplicates exists, then update r/b tree */
172: SLIST_FOREACH(u2, pwd, usr_next)
173: if (!AIT_ISEMPTY(&u2->usr_name) &&
174: !strcmp(AIT_GET_STR(&u->usr_name), AIT_GET_STR(&u2->usr_name))) {
175: RB_INSERT(tagPWD, pwd, u2);
176: break;
177: }
178: PWD_UNLOCK(pwd);
179:
180: AIT_FREE_VAL(&u->usr_name);
181: AIT_FREE_VAL(&u->usr_pass);
182: AIT_FREE_VAL(&u->usr_uid);
183: AIT_FREE_VAL(&u->usr_gid);
184: AIT_FREE_VAL(&u->usr_class);
185: AIT_FREE_VAL(&u->usr_change);
186: AIT_FREE_VAL(&u->usr_expire);
187: AIT_FREE_VAL(&u->usr_realm);
188: AIT_FREE_VAL(&u->usr_home);
189: AIT_FREE_VAL(&u->usr_shell);
190: e_free(u);
191: return 1;
192: }
193:
194: /*
195: * cfg_setPasswd() - Set item in password or adding new item if not exists
196: *
197: * @cfg = Password root
198: * @fields = Following parameters are continuous to certain field
199: * @csName = Username
200: * @arg1 = Password
201: * @arg2 = UID
202: * @arg3 = GID
203: * @arg4 = Login class
204: * @arg5 = Change date
205: * @arg6 = Expire date
206: * @arg7 = Realm
207: * @arg8 = Home dir
208: * @arg9 = Shell
209: * return: 0 nothing changed, -1 error, 1 found and updated item or 2 added new item
210: */
211: int
212: cfg_setPasswd(pwd_root_t * __restrict pwd, passwd_attr_t fields, const char *csName, ...)
213: {
214: struct tagUser *u;
215: register int i;
216: va_list lst;
217:
218: if (!pwd || !csName)
219: return -1;
220:
221: u = _selectPasswd(pwd, 0, csName);
222: if (!u) {
223: /* adding new element */
224: u = e_malloc(sizeof(struct tagUser));
225: if (!u) {
226: cfg_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
227: return -1;
228: } else {
229: memset(u, 0, sizeof(struct tagUser));
230: if (fields >= Username && fields <= Shell)
231: u->usr_fields = (int) fields;
232: else
233: u->usr_fields = PWD_MAX_FIELDS - 1;
234:
235: PWD_LOCK(pwd);
236: SLIST_INSERT_HEAD(pwd, u, usr_next);
237: PWD_UNLOCK(pwd);
238: }
239:
240: va_start(lst, csName);
241: for (i = 0; i < (u->usr_fields + 1); i++)
242: switch (i) {
243: case 0:
244: AIT_SET_STR(&u->usr_name, csName);
245: break;
246: case 1:
247: AIT_SET_STR(&u->usr_pass, va_arg(lst, char*));
248: break;
249: case 2:
250: AIT_SET_U32(&u->usr_uid, va_arg(lst, u_int));
251: break;
252: case 3:
253: AIT_SET_U32(&u->usr_gid, va_arg(lst, u_int));
254: break;
255: case 4:
256: AIT_SET_STR(&u->usr_class, va_arg(lst, char*));
257: break;
258: case 5:
259: AIT_SET_U32(&u->usr_change, va_arg(lst, u_int));
260: break;
261: case 6:
262: AIT_SET_U32(&u->usr_expire, va_arg(lst, u_int));
263: break;
264: case 7:
265: AIT_SET_STR(&u->usr_realm, va_arg(lst, char*));
266: break;
267: case 8:
268: AIT_SET_STR(&u->usr_home, va_arg(lst, char*));
269: break;
270: case 9:
271: AIT_SET_STR(&u->usr_shell, va_arg(lst, char*));
272: break;
273: }
274: va_end(lst);
275:
276: AIT_KEY(&u->usr_name) = crcFletcher16(AIT_GET_LIKE(&u->usr_name, u_short*),
277: E_ALIGN(AIT_LEN(&u->usr_name) - 1, 2) / 2);
278:
279: PWD_LOCK(pwd);
280: RB_INSERT(tagPWD, pwd, u);
281: PWD_UNLOCK(pwd);
282: return 2;
283: } else {
284: AIT_FREE_VAL(&u->usr_pass);
285: AIT_FREE_VAL(&u->usr_uid);
286: AIT_FREE_VAL(&u->usr_gid);
287: AIT_FREE_VAL(&u->usr_class);
288: AIT_FREE_VAL(&u->usr_change);
289: AIT_FREE_VAL(&u->usr_expire);
290: AIT_FREE_VAL(&u->usr_realm);
291: AIT_FREE_VAL(&u->usr_home);
292: AIT_FREE_VAL(&u->usr_shell);
293:
294: /* Update element */
295: va_start(lst, csName);
296: for (i = 1; i < (u->usr_fields + 1); i++)
297: switch (i) {
298: case 1:
299: AIT_SET_STR(&u->usr_pass, va_arg(lst, char*));
300: break;
301: case 2:
302: AIT_SET_U32(&u->usr_uid, va_arg(lst, u_int));
303: break;
304: case 3:
305: AIT_SET_U32(&u->usr_gid, va_arg(lst, u_int));
306: break;
307: case 4:
308: AIT_SET_STR(&u->usr_class, va_arg(lst, char*));
309: break;
310: case 5:
311: AIT_SET_U32(&u->usr_change, va_arg(lst, u_int));
312: break;
313: case 6:
314: AIT_SET_U32(&u->usr_expire, va_arg(lst, u_int));
315: break;
316: case 7:
317: AIT_SET_STR(&u->usr_realm, va_arg(lst, char*));
318: break;
319: case 8:
320: AIT_SET_STR(&u->usr_home, va_arg(lst, char*));
321: break;
322: case 9:
323: AIT_SET_STR(&u->usr_shell, va_arg(lst, char*));
324: break;
325: }
326: va_end(lst);
327: return 1;
328: }
329:
330: /* Nothing happens ... found & values is equal! */
331: return 0;
332: }
333:
334: /*
335: * cfg_getPasswd() - Get item from passwords and return structure from it
336: *
337: * @pwd = Password root
338: * @criteria = Search criteria [PWD_CRIT_NAME|PWD_CRIT_UID]
339: * @arg1 = Username | UID
340: * return: NULL item not found, !=NULL structure found
341: */
342: const struct tagUser *
343: cfg_getPasswd(pwd_root_t * __restrict pwd, int criteria, ...)
344: {
345: struct tagUser *u;
346: va_list lst;
347: char *str;
348:
349: if (!pwd)
350: return NULL;
351:
352: va_start(lst, criteria);
353: switch (criteria) {
354: case PWD_CRIT_NAME:
355: str = va_arg(lst, char*);
356: if (!str)
357: u = NULL;
358: else
359: u = _selectPasswd(pwd, 0, str);
360: break;
361: case PWD_CRIT_UID:
362: u = _selectPasswd(pwd, va_arg(lst, u_int), NULL);
363: break;
364: default:
365: u = NULL;
366: break;
367: }
368: va_end(lst);
369:
370: return u;
371: }
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