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b6c7c20d | 1 | /* |
8964deec KB |
2 | * Copyright (c) 1988, 1993 |
3 | * The Regents of the University of California. All rights reserved. | |
b6c7c20d | 4 | * |
f15db449 | 5 | * %sccs.include.redist.c% |
b6c7c20d KB |
6 | */ |
7 | ||
8 | #ifndef lint | |
8964deec | 9 | static char sccsid[] = "@(#)field.c 8.1 (Berkeley) %G%"; |
b6c7c20d KB |
10 | #endif /* not lint */ |
11 | ||
12 | #include <sys/param.h> | |
cac8e61f | 13 | #include <pwd.h> |
b6c7c20d | 14 | #include <grp.h> |
38dde0cd | 15 | #include <string.h> |
b6c7c20d KB |
16 | #include <stdio.h> |
17 | #include <ctype.h> | |
435e8dff | 18 | #include "chpass.h" |
cac8e61f | 19 | #include "pathnames.h" |
b6c7c20d KB |
20 | |
21 | /* ARGSUSED */ | |
22 | p_login(p, pw, ep) | |
23 | char *p; | |
24 | struct passwd *pw; | |
bc3d7b01 | 25 | ENTRY *ep; |
b6c7c20d KB |
26 | { |
27 | if (!*p) { | |
7df40547 | 28 | (void)fprintf(stderr, "chpass: empty login field.\n"); |
b6c7c20d KB |
29 | return(1); |
30 | } | |
e4387aeb | 31 | if (*p == '-') { |
d7cc8700 | 32 | (void)fprintf(stderr, |
e4387aeb KB |
33 | "chpass: login names may not begin with a hyphen.\n"); |
34 | return(1); | |
35 | } | |
b6c7c20d | 36 | if (!(pw->pw_name = strdup(p))) { |
7df40547 | 37 | (void)fprintf(stderr, "chpass: can't save entry.\n"); |
b6c7c20d KB |
38 | return(1); |
39 | } | |
d7cc8700 KB |
40 | if (index(p, '.')) |
41 | (void)fprintf(stderr, | |
42 | "chpass: \'.\' is dangerous in a login name.\n"); | |
43 | for (; *p; ++p) | |
44 | if (isupper(*p)) { | |
45 | (void)fprintf(stderr, | |
46 | "chpass: upper-case letters are dangerous in a login name.\n"); | |
47 | break; | |
48 | } | |
b6c7c20d KB |
49 | return(0); |
50 | } | |
51 | ||
8557219a KB |
52 | /* ARGSUSED */ |
53 | p_passwd(p, pw, ep) | |
54 | char *p; | |
55 | struct passwd *pw; | |
bc3d7b01 | 56 | ENTRY *ep; |
8557219a KB |
57 | { |
58 | if (!*p) | |
59 | pw->pw_passwd = ""; /* "NOLOGIN"; */ | |
60 | else if (!(pw->pw_passwd = strdup(p))) { | |
7df40547 | 61 | (void)fprintf(stderr, "chpass: can't save password entry.\n"); |
8557219a KB |
62 | return(1); |
63 | } | |
64 | ||
65 | return(0); | |
66 | } | |
67 | ||
b6c7c20d KB |
68 | /* ARGSUSED */ |
69 | p_uid(p, pw, ep) | |
70 | register char *p; | |
71 | struct passwd *pw; | |
bc3d7b01 | 72 | ENTRY *ep; |
b6c7c20d KB |
73 | { |
74 | int id; | |
75 | ||
76 | if (!*p) { | |
7df40547 | 77 | (void)fprintf(stderr, "chpass: empty uid field.\n"); |
b6c7c20d KB |
78 | return(1); |
79 | } | |
80 | if (!isdigit(*p)) { | |
7df40547 | 81 | (void)fprintf(stderr, "chpass: illegal uid.\n"); |
b6c7c20d KB |
82 | return(1); |
83 | } | |
84 | id = atoi(p); | |
85 | if ((u_int)id > USHRT_MAX) { | |
7df40547 | 86 | (void)fprintf(stderr, "chpass: %d > max uid value (%d).\n", |
b6c7c20d KB |
87 | id, USHRT_MAX); |
88 | return(1); | |
89 | } | |
90 | pw->pw_uid = id; | |
91 | return(0); | |
92 | } | |
93 | ||
94 | /* ARGSUSED */ | |
95 | p_gid(p, pw, ep) | |
96 | register char *p; | |
97 | struct passwd *pw; | |
bc3d7b01 | 98 | ENTRY *ep; |
b6c7c20d KB |
99 | { |
100 | struct group *gr; | |
101 | int id; | |
102 | ||
103 | if (!*p) { | |
7df40547 | 104 | (void)fprintf(stderr, "chpass: empty gid field.\n"); |
b6c7c20d KB |
105 | return(1); |
106 | } | |
107 | if (!isdigit(*p)) { | |
108 | if (!(gr = getgrnam(p))) { | |
7df40547 KB |
109 | (void)fprintf(stderr, |
110 | "chpass: unknown group %s.\n", p); | |
b6c7c20d KB |
111 | return(1); |
112 | } | |
113 | pw->pw_gid = gr->gr_gid; | |
114 | return(0); | |
115 | } | |
116 | id = atoi(p); | |
117 | if ((u_int)id > USHRT_MAX) { | |
7df40547 | 118 | (void)fprintf(stderr, "chpass: %d > max gid value (%d).\n", |
b6c7c20d KB |
119 | id, USHRT_MAX); |
120 | return(1); | |
121 | } | |
122 | pw->pw_gid = id; | |
123 | return(0); | |
124 | } | |
125 | ||
126 | /* ARGSUSED */ | |
127 | p_class(p, pw, ep) | |
128 | char *p; | |
129 | struct passwd *pw; | |
bc3d7b01 | 130 | ENTRY *ep; |
b6c7c20d | 131 | { |
ef97d022 KB |
132 | if (!*p) |
133 | pw->pw_class = ""; | |
134 | else if (!(pw->pw_class = strdup(p))) { | |
7df40547 | 135 | (void)fprintf(stderr, "chpass: can't save entry.\n"); |
b6c7c20d KB |
136 | return(1); |
137 | } | |
ef97d022 | 138 | |
b6c7c20d KB |
139 | return(0); |
140 | } | |
141 | ||
142 | /* ARGSUSED */ | |
143 | p_change(p, pw, ep) | |
144 | char *p; | |
145 | struct passwd *pw; | |
bc3d7b01 | 146 | ENTRY *ep; |
b6c7c20d KB |
147 | { |
148 | if (!atot(p, &pw->pw_change)) | |
149 | return(0); | |
7df40547 | 150 | (void)fprintf(stderr, "chpass: illegal date for change field.\n"); |
b6c7c20d KB |
151 | return(1); |
152 | } | |
153 | ||
154 | /* ARGSUSED */ | |
155 | p_expire(p, pw, ep) | |
156 | char *p; | |
157 | struct passwd *pw; | |
bc3d7b01 | 158 | ENTRY *ep; |
b6c7c20d KB |
159 | { |
160 | if (!atot(p, &pw->pw_expire)) | |
161 | return(0); | |
7df40547 | 162 | (void)fprintf(stderr, "chpass: illegal date for expire field.\n"); |
b6c7c20d KB |
163 | return(1); |
164 | } | |
165 | ||
166 | /* ARGSUSED */ | |
ef97d022 | 167 | p_gecos(p, pw, ep) |
b6c7c20d KB |
168 | char *p; |
169 | struct passwd *pw; | |
bc3d7b01 | 170 | ENTRY *ep; |
b6c7c20d | 171 | { |
ef97d022 KB |
172 | if (!*p) |
173 | ep->save = ""; | |
174 | else if (!(ep->save = strdup(p))) { | |
7df40547 | 175 | (void)fprintf(stderr, "chpass: can't save entry.\n"); |
b6c7c20d KB |
176 | return(1); |
177 | } | |
178 | return(0); | |
179 | } | |
180 | ||
181 | /* ARGSUSED */ | |
182 | p_hdir(p, pw, ep) | |
183 | char *p; | |
184 | struct passwd *pw; | |
bc3d7b01 | 185 | ENTRY *ep; |
b6c7c20d KB |
186 | { |
187 | if (!*p) { | |
7df40547 | 188 | (void)fprintf(stderr, "chpass: empty home directory field.\n"); |
b6c7c20d KB |
189 | return(1); |
190 | } | |
191 | if (!(pw->pw_dir = strdup(p))) { | |
7df40547 | 192 | (void)fprintf(stderr, "chpass: can't save entry.\n"); |
b6c7c20d KB |
193 | return(1); |
194 | } | |
195 | return(0); | |
196 | } | |
197 | ||
198 | /* ARGSUSED */ | |
199 | p_shell(p, pw, ep) | |
200 | register char *p; | |
201 | struct passwd *pw; | |
bc3d7b01 | 202 | ENTRY *ep; |
b6c7c20d | 203 | { |
34dda72c | 204 | char *t, *ok_shell(); |
b6c7c20d KB |
205 | |
206 | if (!*p) { | |
cac8e61f | 207 | pw->pw_shell = _PATH_BSHELL; |
b6c7c20d KB |
208 | return(0); |
209 | } | |
34dda72c KB |
210 | /* only admin can change from or to "restricted" shells */ |
211 | if (uid && pw->pw_shell && !ok_shell(pw->pw_shell)) { | |
212 | (void)fprintf(stderr, | |
213 | "chpass: %s: current shell non-standard.\n", pw->pw_shell); | |
214 | return(1); | |
215 | } | |
216 | if (!(t = ok_shell(p))) { | |
217 | if (uid) { | |
d7cc8700 | 218 | (void)fprintf(stderr, |
7df40547 | 219 | "chpass: %s: non-standard shell.\n", p); |
b6c7c20d KB |
220 | return(1); |
221 | } | |
b6c7c20d | 222 | } |
34dda72c KB |
223 | else |
224 | p = t; | |
b6c7c20d | 225 | if (!(pw->pw_shell = strdup(p))) { |
7df40547 | 226 | (void)fprintf(stderr, "chpass: can't save entry.\n"); |
b6c7c20d KB |
227 | return(1); |
228 | } | |
229 | return(0); | |
230 | } |