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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 | |
ef97d022 | 19 | static char sccsid[] = "@(#)field.c 5.5 (Berkeley) %G%"; |
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20 | #endif /* not lint */ |
21 | ||
22 | #include <sys/param.h> | |
cac8e61f | 23 | #include <pwd.h> |
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24 | #include <grp.h> |
25 | #include <strings.h> | |
26 | #include <stdio.h> | |
27 | #include <ctype.h> | |
28 | #include <chpass.h> | |
cac8e61f | 29 | #include "pathnames.h" |
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30 | |
31 | /* ARGSUSED */ | |
32 | p_login(p, pw, ep) | |
33 | char *p; | |
34 | struct passwd *pw; | |
35 | struct entry *ep; | |
36 | { | |
37 | if (!*p) { | |
ef97d022 | 38 | fprintf(stderr, "chpass: empty login field"); |
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39 | return(1); |
40 | } | |
e4387aeb KB |
41 | if (*p == '-') { |
42 | fprintf(stderr, | |
43 | "chpass: login names may not begin with a hyphen.\n"); | |
44 | return(1); | |
45 | } | |
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46 | if (!(pw->pw_name = strdup(p))) { |
47 | fprintf(stderr, "chpass: can't save entry"); | |
48 | return(1); | |
49 | } | |
50 | return(0); | |
51 | } | |
52 | ||
53 | /* ARGSUSED */ | |
54 | p_uid(p, pw, ep) | |
55 | register char *p; | |
56 | struct passwd *pw; | |
57 | struct entry *ep; | |
58 | { | |
59 | int id; | |
60 | ||
61 | if (!*p) { | |
ef97d022 | 62 | fprintf(stderr, "chpass: empty uid field"); |
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63 | return(1); |
64 | } | |
65 | if (!isdigit(*p)) { | |
66 | fprintf(stderr, "chpass: illegal uid"); | |
67 | return(1); | |
68 | } | |
69 | id = atoi(p); | |
70 | if ((u_int)id > USHRT_MAX) { | |
71 | fprintf(stderr, "chpass: %d > max uid value (%d)", | |
72 | id, USHRT_MAX); | |
73 | return(1); | |
74 | } | |
75 | pw->pw_uid = id; | |
76 | return(0); | |
77 | } | |
78 | ||
79 | /* ARGSUSED */ | |
80 | p_gid(p, pw, ep) | |
81 | register char *p; | |
82 | struct passwd *pw; | |
83 | struct entry *ep; | |
84 | { | |
85 | struct group *gr; | |
86 | int id; | |
87 | ||
88 | if (!*p) { | |
ef97d022 | 89 | fprintf(stderr, "chpass: empty gid field"); |
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90 | return(1); |
91 | } | |
92 | if (!isdigit(*p)) { | |
93 | if (!(gr = getgrnam(p))) { | |
94 | fprintf(stderr, "chpass: unknown group %s", p); | |
95 | return(1); | |
96 | } | |
97 | pw->pw_gid = gr->gr_gid; | |
98 | return(0); | |
99 | } | |
100 | id = atoi(p); | |
101 | if ((u_int)id > USHRT_MAX) { | |
102 | fprintf(stderr, "chpass: %d > max gid value (%d)", | |
103 | id, USHRT_MAX); | |
104 | return(1); | |
105 | } | |
106 | pw->pw_gid = id; | |
107 | return(0); | |
108 | } | |
109 | ||
110 | /* ARGSUSED */ | |
111 | p_class(p, pw, ep) | |
112 | char *p; | |
113 | struct passwd *pw; | |
114 | struct entry *ep; | |
115 | { | |
ef97d022 KB |
116 | if (!*p) |
117 | pw->pw_class = ""; | |
118 | else if (!(pw->pw_class = strdup(p))) { | |
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119 | fprintf(stderr, "chpass: can't save entry"); |
120 | return(1); | |
121 | } | |
ef97d022 | 122 | |
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123 | return(0); |
124 | } | |
125 | ||
126 | /* ARGSUSED */ | |
127 | p_change(p, pw, ep) | |
128 | char *p; | |
129 | struct passwd *pw; | |
130 | struct entry *ep; | |
131 | { | |
132 | if (!atot(p, &pw->pw_change)) | |
133 | return(0); | |
134 | fprintf(stderr, "chpass: illegal date for change field"); | |
135 | return(1); | |
136 | } | |
137 | ||
138 | /* ARGSUSED */ | |
139 | p_expire(p, pw, ep) | |
140 | char *p; | |
141 | struct passwd *pw; | |
142 | struct entry *ep; | |
143 | { | |
144 | if (!atot(p, &pw->pw_expire)) | |
145 | return(0); | |
146 | fprintf(stderr, "chpass: illegal date for expire field"); | |
147 | return(1); | |
148 | } | |
149 | ||
150 | /* ARGSUSED */ | |
ef97d022 | 151 | p_gecos(p, pw, ep) |
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152 | char *p; |
153 | struct passwd *pw; | |
154 | struct entry *ep; | |
155 | { | |
ef97d022 KB |
156 | if (!*p) |
157 | ep->save = ""; | |
158 | else if (!(ep->save = strdup(p))) { | |
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159 | fprintf(stderr, "chpass: can't save entry"); |
160 | return(1); | |
161 | } | |
162 | return(0); | |
163 | } | |
164 | ||
165 | /* ARGSUSED */ | |
166 | p_hdir(p, pw, ep) | |
167 | char *p; | |
168 | struct passwd *pw; | |
169 | struct entry *ep; | |
170 | { | |
171 | if (!*p) { | |
ef97d022 | 172 | fprintf(stderr, "chpass: empty home directory field"); |
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173 | return(1); |
174 | } | |
175 | if (!(pw->pw_dir = strdup(p))) { | |
176 | fprintf(stderr, "chpass: can't save entry"); | |
177 | return(1); | |
178 | } | |
179 | return(0); | |
180 | } | |
181 | ||
182 | /* ARGSUSED */ | |
183 | p_shell(p, pw, ep) | |
184 | register char *p; | |
185 | struct passwd *pw; | |
186 | struct entry *ep; | |
187 | { | |
188 | register char *sh, *t; | |
189 | char *getusershell(); | |
190 | ||
191 | if (!*p) { | |
cac8e61f | 192 | pw->pw_shell = _PATH_BSHELL; |
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193 | return(0); |
194 | } | |
195 | setusershell(); | |
196 | for (;;) { | |
197 | if (!(sh = getusershell())) { | |
198 | /* only admin can set "restricted" shells */ | |
199 | if (!uid) | |
200 | break; | |
201 | fprintf(stderr, "chpass: %s: non-standard shell", p); | |
202 | return(1); | |
203 | } | |
204 | if (!strcmp(p, sh)) | |
205 | break; | |
206 | /* allow just shell name */ | |
207 | if ((t = rindex(sh, '/')) && !strcmp(p, t)) { | |
208 | p = t; | |
209 | break; | |
210 | } | |
211 | } | |
212 | if (!(pw->pw_shell = strdup(p))) { | |
213 | fprintf(stderr, "chpass: can't save entry"); | |
214 | return(1); | |
215 | } | |
216 | return(0); | |
217 | } |