![[BACK]](/icons/back.gif){kind=icon}
Return to field.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / chpass|
Return to field.c CVS log | Up to [local] / src / usr.bin / chpass |
1.1 deraadt 1: /* $NetBSD: field.c,v 1.3 1995/03/26 04:55:28 glass Exp $ */
2:
3: /*
4: * Copyright (c) 1988, 1993, 1994
5: * The Regents of the University of California. All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: * 3. All advertising materials mentioning features or use of this software
16: * must display the following acknowledgement:
17: * This product includes software developed by the University of
18: * California, Berkeley and its contributors.
19: * 4. Neither the name of the University nor the names of its contributors
20: * may be used to endorse or promote products derived from this software
21: * without specific prior written permission.
22: *
23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33: * SUCH DAMAGE.
34: */
35:
36: #ifndef lint
37: #if 0
38: static char sccsid[] = "@(#)field.c 8.4 (Berkeley) 4/2/94";
39: #else
40: static char rcsid[] = "$NetBSD: field.c,v 1.3 1995/03/26 04:55:28 glass Exp $";
41: #endif
42: #endif /* not lint */
43:
44: #include <sys/param.h>
45:
46: #include <ctype.h>
47: #include <err.h>
48: #include <errno.h>
49: #include <grp.h>
50: #include <pwd.h>
51: #include <stdio.h>
52: #include <stdlib.h>
53: #include <string.h>
54: #include <unistd.h>
55:
56: #include "chpass.h"
57: #include "pathnames.h"
58:
59: /* ARGSUSED */
60: int
61: p_login(p, pw, ep)
62: char *p;
63: struct passwd *pw;
64: ENTRY *ep;
65: {
66: if (!*p) {
67: warnx("empty login field");
68: return (1);
69: }
70: if (*p == '-') {
71: warnx("login names may not begin with a hyphen");
72: return (1);
73: }
74: if (!(pw->pw_name = strdup(p))) {
75: warnx("can't save entry");
76: return (1);
77: }
78: if (strchr(p, '.'))
79: warnx("\'.\' is dangerous in a login name");
80: for (; *p; ++p)
81: if (isupper(*p)) {
82: warnx("upper-case letters are dangerous in a login name");
83: break;
84: }
85: return (0);
86: }
87:
88: /* ARGSUSED */
89: int
90: p_passwd(p, pw, ep)
91: char *p;
92: struct passwd *pw;
93: ENTRY *ep;
94: {
95: if (!*p)
96: pw->pw_passwd = ""; /* "NOLOGIN"; */
97: else if (!(pw->pw_passwd = strdup(p))) {
98: warnx("can't save password entry");
99: return (1);
100: }
101:
102: return (0);
103: }
104:
105: /* ARGSUSED */
106: int
107: p_uid(p, pw, ep)
108: char *p;
109: struct passwd *pw;
110: ENTRY *ep;
111: {
112: uid_t id;
113: char *np;
114:
115: if (!*p) {
116: warnx("empty uid field");
117: return (1);
118: }
119: if (!isdigit(*p)) {
120: warnx("illegal uid");
121: return (1);
122: }
123: errno = 0;
124: id = strtoul(p, &np, 10);
125: if (*np || (id == ULONG_MAX && errno == ERANGE)) {
126: warnx("illegal uid");
127: return (1);
128: }
129: pw->pw_uid = id;
130: return (0);
131: }
132:
133: /* ARGSUSED */
134: int
135: p_gid(p, pw, ep)
136: char *p;
137: struct passwd *pw;
138: ENTRY *ep;
139: {
140: struct group *gr;
141: gid_t id;
142: char *np;
143:
144: if (!*p) {
145: warnx("empty gid field");
146: return (1);
147: }
148: if (!isdigit(*p)) {
149: if (!(gr = getgrnam(p))) {
150: warnx("unknown group %s", p);
151: return (1);
152: }
153: pw->pw_gid = gr->gr_gid;
154: return (0);
155: }
156: errno = 0;
157: id = strtoul(p, &np, 10);
158: if (*np || (id == ULONG_MAX && errno == ERANGE)) {
159: warnx("illegal gid");
160: return (1);
161: }
162: pw->pw_gid = id;
163: return (0);
164: }
165:
166: /* ARGSUSED */
167: int
168: p_class(p, pw, ep)
169: char *p;
170: struct passwd *pw;
171: ENTRY *ep;
172: {
173: if (!*p)
174: pw->pw_class = "";
175: else if (!(pw->pw_class = strdup(p))) {
176: warnx("can't save entry");
177: return (1);
178: }
179:
180: return (0);
181: }
182:
183: /* ARGSUSED */
184: int
185: p_change(p, pw, ep)
186: char *p;
187: struct passwd *pw;
188: ENTRY *ep;
189: {
190: if (!atot(p, &pw->pw_change))
191: return (0);
192: warnx("illegal date for change field");
193: return (1);
194: }
195:
196: /* ARGSUSED */
197: int
198: p_expire(p, pw, ep)
199: char *p;
200: struct passwd *pw;
201: ENTRY *ep;
202: {
203: if (!atot(p, &pw->pw_expire))
204: return (0);
205: warnx("illegal date for expire field");
206: return (1);
207: }
208:
209: /* ARGSUSED */
210: int
211: p_gecos(p, pw, ep)
212: char *p;
213: struct passwd *pw;
214: ENTRY *ep;
215: {
216: if (!*p)
217: ep->save = "";
218: else if (!(ep->save = strdup(p))) {
219: warnx("can't save entry");
220: return (1);
221: }
222: return (0);
223: }
224:
225: /* ARGSUSED */
226: int
227: p_hdir(p, pw, ep)
228: char *p;
229: struct passwd *pw;
230: ENTRY *ep;
231: {
232: if (!*p) {
233: warnx("empty home directory field");
234: return (1);
235: }
236: if (!(pw->pw_dir = strdup(p))) {
237: warnx("can't save entry");
238: return (1);
239: }
240: return (0);
241: }
242:
243: /* ARGSUSED */
244: int
245: p_shell(p, pw, ep)
246: char *p;
247: struct passwd *pw;
248: ENTRY *ep;
249: {
250: char *t, *ok_shell();
251:
252: if (!*p) {
253: pw->pw_shell = _PATH_BSHELL;
254: return (0);
255: }
256: /* only admin can change from or to "restricted" shells */
257: if (uid && pw->pw_shell && !ok_shell(pw->pw_shell)) {
258: warnx("%s: current shell non-standard", pw->pw_shell);
259: return (1);
260: }
261: if (!(t = ok_shell(p))) {
262: if (uid) {
263: warnx("%s: non-standard shell", p);
264: return (1);
265: }
266: }
267: else
268: p = t;
269: if (!(pw->pw_shell = strdup(p))) {
270: warnx("can't save entry");
271: return (1);
272: }
273: return (0);
274: }