Annotation of src/usr.bin/chpass/field.c, Revision 1.7
1.7 ! millert 1: /* $OpenBSD: field.c,v 1.6 2003/07/01 01:01:28 avsm Exp $ */
1.1 deraadt 2: /* $NetBSD: field.c,v 1.3 1995/03/26 04:55:28 glass Exp $ */
3:
4: /*
5: * Copyright (c) 1988, 1993, 1994
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
1.5 millert 16: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: */
32:
33: #ifndef lint
34: #if 0
35: static char sccsid[] = "@(#)field.c 8.4 (Berkeley) 4/2/94";
1.4 deraadt 36: #else
1.7 ! millert 37: static char rcsid[] = "$OpenBSD: field.c,v 1.6 2003/07/01 01:01:28 avsm Exp $";
1.1 deraadt 38: #endif
39: #endif /* not lint */
40:
41: #include <sys/param.h>
42:
43: #include <ctype.h>
44: #include <err.h>
45: #include <errno.h>
46: #include <grp.h>
1.6 avsm 47: #include <paths.h>
1.1 deraadt 48: #include <pwd.h>
49: #include <stdio.h>
50: #include <stdlib.h>
51: #include <string.h>
52: #include <unistd.h>
53:
54: #include "chpass.h"
55:
56: /* ARGSUSED */
57: int
1.4 deraadt 58: p_login(char *p, struct passwd *pw, ENTRY *ep)
1.1 deraadt 59: {
1.7 ! millert 60: struct passwd *tpw;
! 61:
1.1 deraadt 62: if (!*p) {
63: warnx("empty login field");
64: return (1);
65: }
66: if (*p == '-') {
67: warnx("login names may not begin with a hyphen");
68: return (1);
69: }
1.7 ! millert 70: /* XXX - what about truncated names? */
! 71: if (strcmp(pw->pw_name, p) != 0 && (tpw = getpwnam(p)) != NULL) {
! 72: warnx("login %s already exists", p);
! 73: return (1);
! 74: }
1.1 deraadt 75: if (!(pw->pw_name = strdup(p))) {
76: warnx("can't save entry");
77: return (1);
78: }
79: if (strchr(p, '.'))
80: warnx("\'.\' is dangerous in a login name");
81: for (; *p; ++p)
82: if (isupper(*p)) {
83: warnx("upper-case letters are dangerous in a login name");
84: break;
85: }
86: return (0);
87: }
88:
89: /* ARGSUSED */
90: int
1.4 deraadt 91: p_passwd(char *p, struct passwd *pw, ENTRY *ep)
1.1 deraadt 92: {
93: if (!*p)
94: pw->pw_passwd = ""; /* "NOLOGIN"; */
95: else if (!(pw->pw_passwd = strdup(p))) {
96: warnx("can't save password entry");
97: return (1);
98: }
1.4 deraadt 99:
1.1 deraadt 100: return (0);
101: }
102:
103: /* ARGSUSED */
104: int
1.4 deraadt 105: p_uid(char *p, struct passwd *pw, ENTRY *ep)
1.1 deraadt 106: {
107: uid_t id;
1.7 ! millert 108: const char *errstr;
1.1 deraadt 109:
110: if (!*p) {
111: warnx("empty uid field");
112: return (1);
113: }
1.7 ! millert 114: id = strtonum(p, 0, UID_MAX, &errstr);
! 115: if (errstr) {
! 116: warnx("uid is %s", errstr);
1.1 deraadt 117: return (1);
118: }
119: pw->pw_uid = id;
120: return (0);
121: }
122:
123: /* ARGSUSED */
124: int
1.4 deraadt 125: p_gid(char *p, struct passwd *pw, ENTRY *ep)
1.1 deraadt 126: {
127: struct group *gr;
1.7 ! millert 128: const char *errstr;
1.1 deraadt 129: gid_t id;
130:
131: if (!*p) {
132: warnx("empty gid field");
133: return (1);
134: }
135: if (!isdigit(*p)) {
136: if (!(gr = getgrnam(p))) {
137: warnx("unknown group %s", p);
138: return (1);
139: }
140: pw->pw_gid = gr->gr_gid;
141: return (0);
142: }
1.7 ! millert 143: id = strtonum(p, 0, GID_MAX, &errstr);
! 144: if (errstr) {
! 145: warnx("gid is %s", errstr);
1.1 deraadt 146: return (1);
147: }
148: pw->pw_gid = id;
149: return (0);
150: }
151:
152: /* ARGSUSED */
153: int
1.4 deraadt 154: p_class(char *p, struct passwd *pw, ENTRY *ep)
1.1 deraadt 155: {
156: if (!*p)
157: pw->pw_class = "";
158: else if (!(pw->pw_class = strdup(p))) {
159: warnx("can't save entry");
160: return (1);
161: }
1.4 deraadt 162:
1.1 deraadt 163: return (0);
164: }
165:
166: /* ARGSUSED */
167: int
1.4 deraadt 168: p_change(char *p, struct passwd *pw, ENTRY *ep)
1.1 deraadt 169: {
170: if (!atot(p, &pw->pw_change))
171: return (0);
172: warnx("illegal date for change field");
173: return (1);
174: }
175:
176: /* ARGSUSED */
177: int
1.4 deraadt 178: p_expire(char *p, struct passwd *pw, ENTRY *ep)
1.1 deraadt 179: {
180: if (!atot(p, &pw->pw_expire))
181: return (0);
182: warnx("illegal date for expire field");
183: return (1);
184: }
185:
186: /* ARGSUSED */
187: int
1.4 deraadt 188: p_gecos(char *p, struct passwd *pw, ENTRY *ep)
1.1 deraadt 189: {
190: if (!*p)
191: ep->save = "";
192: else if (!(ep->save = strdup(p))) {
193: warnx("can't save entry");
194: return (1);
195: }
196: return (0);
197: }
198:
199: /* ARGSUSED */
200: int
1.4 deraadt 201: p_hdir(char *p, struct passwd *pw, ENTRY *ep)
1.1 deraadt 202: {
203: if (!*p) {
204: warnx("empty home directory field");
205: return (1);
206: }
207: if (!(pw->pw_dir = strdup(p))) {
208: warnx("can't save entry");
209: return (1);
210: }
211: return (0);
212: }
213:
214: /* ARGSUSED */
215: int
1.4 deraadt 216: p_shell(char *p, struct passwd *pw, ENTRY *ep)
1.1 deraadt 217: {
1.3 downsj 218: char *t;
1.1 deraadt 219:
220: if (!*p) {
221: pw->pw_shell = _PATH_BSHELL;
222: return (0);
223: }
224: /* only admin can change from or to "restricted" shells */
225: if (uid && pw->pw_shell && !ok_shell(pw->pw_shell)) {
226: warnx("%s: current shell non-standard", pw->pw_shell);
227: return (1);
228: }
229: if (!(t = ok_shell(p))) {
230: if (uid) {
231: warnx("%s: non-standard shell", p);
232: return (1);
233: }
1.4 deraadt 234: } else
1.1 deraadt 235: p = t;
236: if (!(pw->pw_shell = strdup(p))) {
237: warnx("can't save entry");
238: return (1);
239: }
240: return (0);
241: }
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