Annotation of src/usr.bin/chpass/edit.c, Revision 1.5
1.5 ! deraadt 1: /* $OpenBSD: edit.c,v 1.4 1996/07/12 02:09:48 downsj Exp $ */
1.2 deraadt 2: /* $NetBSD: edit.c,v 1.6 1996/05/15 21:50:45 jtc Exp $ */
1.1 deraadt 3:
4: /*-
5: * Copyright (c) 1990, 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.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by the University of
19: * California, Berkeley and its contributors.
20: * 4. Neither the name of the University nor the names of its contributors
21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: */
36:
37: #ifndef lint
38: #if 0
39: static char sccsid[] = "@(#)edit.c 8.3 (Berkeley) 4/2/94";
40: #else
1.5 ! deraadt 41: static char rcsid[] = "$OpenBSD: edit.c,v 1.4 1996/07/12 02:09:48 downsj Exp $";
1.1 deraadt 42: #endif
43: #endif /* not lint */
44:
45: #include <sys/param.h>
46: #include <sys/stat.h>
47:
48: #include <ctype.h>
49: #include <err.h>
50: #include <errno.h>
51: #include <paths.h>
52: #include <pwd.h>
53: #include <stdio.h>
54: #include <stdlib.h>
55: #include <string.h>
56: #include <unistd.h>
1.2 deraadt 57: #include <util.h>
1.1 deraadt 58:
59: #include "chpass.h"
60:
61: void
1.2 deraadt 62: edit(tempname, pw)
63: char *tempname;
1.1 deraadt 64: struct passwd *pw;
65: {
66: struct stat begin, end;
67:
68: for (;;) {
69: if (stat(tempname, &begin))
70: pw_error(tempname, 1, 1);
1.2 deraadt 71: pw_edit(1, tempname);
1.1 deraadt 72: if (stat(tempname, &end))
73: pw_error(tempname, 1, 1);
74: if (begin.st_mtime == end.st_mtime) {
75: warnx("no changes made");
1.2 deraadt 76: unlink(tempname);
1.1 deraadt 77: pw_error(NULL, 0, 0);
78: }
1.2 deraadt 79: if (verify(tempname, pw))
1.1 deraadt 80: break;
81: pw_prompt();
82: }
83: }
84:
85: /*
86: * display --
87: * print out the file for the user to edit; strange side-effect:
88: * set conditional flag if the user gets to edit the shell.
89: */
90: void
1.2 deraadt 91: display(tempname, fd, pw)
92: char *tempname;
1.1 deraadt 93: int fd;
94: struct passwd *pw;
95: {
96: FILE *fp;
97: char *bp, *p, *ttoa();
98:
99: if (!(fp = fdopen(fd, "w")))
100: pw_error(tempname, 1, 1);
101:
102: (void)fprintf(fp,
103: "#Changing user database information for %s.\n", pw->pw_name);
104: if (!uid) {
105: (void)fprintf(fp, "Login: %s\n", pw->pw_name);
1.4 downsj 106: (void)fprintf(fp, "Encrypted password: %s\n", pw->pw_passwd);
1.1 deraadt 107: (void)fprintf(fp, "Uid [#]: %d\n", pw->pw_uid);
108: (void)fprintf(fp, "Gid [# or name]: %d\n", pw->pw_gid);
109: (void)fprintf(fp, "Change [month day year]: %s\n",
110: ttoa(pw->pw_change));
111: (void)fprintf(fp, "Expire [month day year]: %s\n",
112: ttoa(pw->pw_expire));
113: (void)fprintf(fp, "Class: %s\n", pw->pw_class);
114: (void)fprintf(fp, "Home directory: %s\n", pw->pw_dir);
115: (void)fprintf(fp, "Shell: %s\n",
116: *pw->pw_shell ? pw->pw_shell : _PATH_BSHELL);
117: }
118: /* Only admin can change "restricted" shells. */
119: else if (ok_shell(pw->pw_shell))
120: /*
121: * Make shell a restricted field. Ugly with a
122: * necklace, but there's not much else to do.
123: */
124: (void)fprintf(fp, "Shell: %s\n",
125: *pw->pw_shell ? pw->pw_shell : _PATH_BSHELL);
126: else
127: list[E_SHELL].restricted = 1;
128: bp = pw->pw_gecos;
129: p = strsep(&bp, ",");
130: (void)fprintf(fp, "Full Name: %s\n", p ? p : "");
131: p = strsep(&bp, ",");
132: (void)fprintf(fp, "Location: %s\n", p ? p : "");
133: p = strsep(&bp, ",");
134: (void)fprintf(fp, "Office Phone: %s\n", p ? p : "");
135: p = strsep(&bp, ",");
136: (void)fprintf(fp, "Home Phone: %s\n", p ? p : "");
137:
138: (void)fchown(fd, getuid(), getgid());
139: (void)fclose(fp);
140: }
141:
142: int
1.2 deraadt 143: verify(tempname, pw)
144: char *tempname;
1.1 deraadt 145: struct passwd *pw;
146: {
147: ENTRY *ep;
148: char *p;
149: struct stat sb;
150: FILE *fp;
151: int len;
152: static char buf[LINE_MAX];
153:
154: if (!(fp = fopen(tempname, "r")))
155: pw_error(tempname, 1, 1);
156: if (fstat(fileno(fp), &sb))
157: pw_error(tempname, 1, 1);
158: if (sb.st_size == 0) {
159: warnx("corrupted temporary file");
160: goto bad;
161: }
162: while (fgets(buf, sizeof(buf), fp)) {
163: if (!buf[0] || buf[0] == '#')
164: continue;
165: if (!(p = strchr(buf, '\n'))) {
166: warnx("line too long");
167: goto bad;
168: }
169: *p = '\0';
170: for (ep = list;; ++ep) {
171: if (!ep->prompt) {
172: warnx("unrecognized field");
173: goto bad;
174: }
175: if (!strncasecmp(buf, ep->prompt, ep->len)) {
176: if (ep->restricted && uid) {
177: warnx(
178: "you may not change the %s field",
179: ep->prompt);
180: goto bad;
181: }
182: if (!(p = strchr(buf, ':'))) {
183: warnx("line corrupted");
184: goto bad;
185: }
186: while (isspace(*++p));
187: if (ep->except && strpbrk(p, ep->except)) {
188: warnx(
189: "illegal character in the \"%s\" field",
190: ep->prompt);
191: goto bad;
192: }
193: if ((ep->func)(p, pw, ep)) {
194: bad: (void)fclose(fp);
195: return (0);
196: }
197: break;
198: }
199: }
200: }
201: (void)fclose(fp);
202:
203: /* Build the gecos field. */
204: len = strlen(list[E_NAME].save) + strlen(list[E_BPHONE].save) +
205: strlen(list[E_HPHONE].save) + strlen(list[E_LOCATE].save) + 4;
206: if (!(p = malloc(len)))
207: err(1, NULL);
208: (void)sprintf(pw->pw_gecos = p, "%s,%s,%s,%s", list[E_NAME].save,
209: list[E_LOCATE].save, list[E_BPHONE].save, list[E_HPHONE].save);
210:
211: if (snprintf(buf, sizeof(buf),
212: "%s:%s:%d:%d:%s:%ld:%ld:%s:%s:%s",
213: pw->pw_name, pw->pw_passwd, pw->pw_uid, pw->pw_gid, pw->pw_class,
214: pw->pw_change, pw->pw_expire, pw->pw_gecos, pw->pw_dir,
215: pw->pw_shell) >= sizeof(buf)) {
216: warnx("entries too long");
217: return (0);
218: }
1.5 ! deraadt 219: free(p);
1.1 deraadt 220: return (pw_scan(buf, pw, (int *)NULL));
221: }
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