Commit | Line | Data |
---|---|---|
b6c7c20d KB |
1 | /* |
2 | * Copyright (c) 1988 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms are permitted | |
6 | * provided that the above copyright notice and this paragraph are | |
7 | * duplicated in all such forms and that any documentation, | |
8 | * advertising materials, and other materials related to such | |
9 | * distribution and use acknowledge that the software was developed | |
10 | * by the University of California, Berkeley. The name of the | |
11 | * University may not be used to endorse or promote products derived | |
12 | * from this software without specific prior written permission. | |
13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
15 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
16 | */ | |
17 | ||
18 | #ifndef lint | |
34dda72c | 19 | static char sccsid[] = "@(#)field.c 5.10 (Berkeley) %G%"; |
b6c7c20d KB |
20 | #endif /* not lint */ |
21 | ||
22 | #include <sys/param.h> | |
cac8e61f | 23 | #include <pwd.h> |
b6c7c20d KB |
24 | #include <grp.h> |
25 | #include <strings.h> | |
26 | #include <stdio.h> | |
27 | #include <ctype.h> | |
435e8dff | 28 | #include "chpass.h" |
cac8e61f | 29 | #include "pathnames.h" |
b6c7c20d KB |
30 | |
31 | /* ARGSUSED */ | |
32 | p_login(p, pw, ep) | |
33 | char *p; | |
34 | struct passwd *pw; | |
35 | struct entry *ep; | |
36 | { | |
37 | if (!*p) { | |
7df40547 | 38 | (void)fprintf(stderr, "chpass: empty login field.\n"); |
b6c7c20d KB |
39 | return(1); |
40 | } | |
e4387aeb | 41 | if (*p == '-') { |
d7cc8700 | 42 | (void)fprintf(stderr, |
e4387aeb KB |
43 | "chpass: login names may not begin with a hyphen.\n"); |
44 | return(1); | |
45 | } | |
b6c7c20d | 46 | if (!(pw->pw_name = strdup(p))) { |
7df40547 | 47 | (void)fprintf(stderr, "chpass: can't save entry.\n"); |
b6c7c20d KB |
48 | return(1); |
49 | } | |
d7cc8700 KB |
50 | if (index(p, '.')) |
51 | (void)fprintf(stderr, | |
52 | "chpass: \'.\' is dangerous in a login name.\n"); | |
53 | for (; *p; ++p) | |
54 | if (isupper(*p)) { | |
55 | (void)fprintf(stderr, | |
56 | "chpass: upper-case letters are dangerous in a login name.\n"); | |
57 | break; | |
58 | } | |
b6c7c20d KB |
59 | return(0); |
60 | } | |
61 | ||
8557219a KB |
62 | /* ARGSUSED */ |
63 | p_passwd(p, pw, ep) | |
64 | char *p; | |
65 | struct passwd *pw; | |
66 | struct entry *ep; | |
67 | { | |
68 | if (!*p) | |
69 | pw->pw_passwd = ""; /* "NOLOGIN"; */ | |
70 | else if (!(pw->pw_passwd = strdup(p))) { | |
7df40547 | 71 | (void)fprintf(stderr, "chpass: can't save password entry.\n"); |
8557219a KB |
72 | return(1); |
73 | } | |
74 | ||
75 | return(0); | |
76 | } | |
77 | ||
b6c7c20d KB |
78 | /* ARGSUSED */ |
79 | p_uid(p, pw, ep) | |
80 | register char *p; | |
81 | struct passwd *pw; | |
82 | struct entry *ep; | |
83 | { | |
84 | int id; | |
85 | ||
86 | if (!*p) { | |
7df40547 | 87 | (void)fprintf(stderr, "chpass: empty uid field.\n"); |
b6c7c20d KB |
88 | return(1); |
89 | } | |
90 | if (!isdigit(*p)) { | |
7df40547 | 91 | (void)fprintf(stderr, "chpass: illegal uid.\n"); |
b6c7c20d KB |
92 | return(1); |
93 | } | |
94 | id = atoi(p); | |
95 | if ((u_int)id > USHRT_MAX) { | |
7df40547 | 96 | (void)fprintf(stderr, "chpass: %d > max uid value (%d).\n", |
b6c7c20d KB |
97 | id, USHRT_MAX); |
98 | return(1); | |
99 | } | |
100 | pw->pw_uid = id; | |
101 | return(0); | |
102 | } | |
103 | ||
104 | /* ARGSUSED */ | |
105 | p_gid(p, pw, ep) | |
106 | register char *p; | |
107 | struct passwd *pw; | |
108 | struct entry *ep; | |
109 | { | |
110 | struct group *gr; | |
111 | int id; | |
112 | ||
113 | if (!*p) { | |
7df40547 | 114 | (void)fprintf(stderr, "chpass: empty gid field.\n"); |
b6c7c20d KB |
115 | return(1); |
116 | } | |
117 | if (!isdigit(*p)) { | |
118 | if (!(gr = getgrnam(p))) { | |
7df40547 KB |
119 | (void)fprintf(stderr, |
120 | "chpass: unknown group %s.\n", p); | |
b6c7c20d KB |
121 | return(1); |
122 | } | |
123 | pw->pw_gid = gr->gr_gid; | |
124 | return(0); | |
125 | } | |
126 | id = atoi(p); | |
127 | if ((u_int)id > USHRT_MAX) { | |
7df40547 | 128 | (void)fprintf(stderr, "chpass: %d > max gid value (%d).\n", |
b6c7c20d KB |
129 | id, USHRT_MAX); |
130 | return(1); | |
131 | } | |
132 | pw->pw_gid = id; | |
133 | return(0); | |
134 | } | |
135 | ||
136 | /* ARGSUSED */ | |
137 | p_class(p, pw, ep) | |
138 | char *p; | |
139 | struct passwd *pw; | |
140 | struct entry *ep; | |
141 | { | |
ef97d022 KB |
142 | if (!*p) |
143 | pw->pw_class = ""; | |
144 | else if (!(pw->pw_class = strdup(p))) { | |
7df40547 | 145 | (void)fprintf(stderr, "chpass: can't save entry.\n"); |
b6c7c20d KB |
146 | return(1); |
147 | } | |
ef97d022 | 148 | |
b6c7c20d KB |
149 | return(0); |
150 | } | |
151 | ||
152 | /* ARGSUSED */ | |
153 | p_change(p, pw, ep) | |
154 | char *p; | |
155 | struct passwd *pw; | |
156 | struct entry *ep; | |
157 | { | |
158 | if (!atot(p, &pw->pw_change)) | |
159 | return(0); | |
7df40547 | 160 | (void)fprintf(stderr, "chpass: illegal date for change field.\n"); |
b6c7c20d KB |
161 | return(1); |
162 | } | |
163 | ||
164 | /* ARGSUSED */ | |
165 | p_expire(p, pw, ep) | |
166 | char *p; | |
167 | struct passwd *pw; | |
168 | struct entry *ep; | |
169 | { | |
170 | if (!atot(p, &pw->pw_expire)) | |
171 | return(0); | |
7df40547 | 172 | (void)fprintf(stderr, "chpass: illegal date for expire field.\n"); |
b6c7c20d KB |
173 | return(1); |
174 | } | |
175 | ||
176 | /* ARGSUSED */ | |
ef97d022 | 177 | p_gecos(p, pw, ep) |
b6c7c20d KB |
178 | char *p; |
179 | struct passwd *pw; | |
180 | struct entry *ep; | |
181 | { | |
ef97d022 KB |
182 | if (!*p) |
183 | ep->save = ""; | |
184 | else if (!(ep->save = strdup(p))) { | |
7df40547 | 185 | (void)fprintf(stderr, "chpass: can't save entry.\n"); |
b6c7c20d KB |
186 | return(1); |
187 | } | |
188 | return(0); | |
189 | } | |
190 | ||
191 | /* ARGSUSED */ | |
192 | p_hdir(p, pw, ep) | |
193 | char *p; | |
194 | struct passwd *pw; | |
195 | struct entry *ep; | |
196 | { | |
197 | if (!*p) { | |
7df40547 | 198 | (void)fprintf(stderr, "chpass: empty home directory field.\n"); |
b6c7c20d KB |
199 | return(1); |
200 | } | |
201 | if (!(pw->pw_dir = strdup(p))) { | |
7df40547 | 202 | (void)fprintf(stderr, "chpass: can't save entry.\n"); |
b6c7c20d KB |
203 | return(1); |
204 | } | |
205 | return(0); | |
206 | } | |
207 | ||
208 | /* ARGSUSED */ | |
209 | p_shell(p, pw, ep) | |
210 | register char *p; | |
211 | struct passwd *pw; | |
212 | struct entry *ep; | |
213 | { | |
34dda72c | 214 | char *t, *ok_shell(); |
b6c7c20d KB |
215 | |
216 | if (!*p) { | |
cac8e61f | 217 | pw->pw_shell = _PATH_BSHELL; |
b6c7c20d KB |
218 | return(0); |
219 | } | |
34dda72c KB |
220 | /* only admin can change from or to "restricted" shells */ |
221 | if (uid && pw->pw_shell && !ok_shell(pw->pw_shell)) { | |
222 | (void)fprintf(stderr, | |
223 | "chpass: %s: current shell non-standard.\n", pw->pw_shell); | |
224 | return(1); | |
225 | } | |
226 | if (!(t = ok_shell(p))) { | |
227 | if (uid) { | |
d7cc8700 | 228 | (void)fprintf(stderr, |
7df40547 | 229 | "chpass: %s: non-standard shell.\n", p); |
b6c7c20d KB |
230 | return(1); |
231 | } | |
b6c7c20d | 232 | } |
34dda72c KB |
233 | else |
234 | p = t; | |
b6c7c20d | 235 | if (!(pw->pw_shell = strdup(p))) { |
7df40547 | 236 | (void)fprintf(stderr, "chpass: can't save entry.\n"); |
b6c7c20d KB |
237 | return(1); |
238 | } | |
239 | return(0); | |
240 | } |