Annotation of src/usr.bin/chpass/edit.c, Revision 1.19
1.19 ! aaron 1: /* $OpenBSD: edit.c,v 1.18 1999/12/05 20:18:35 millert 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
1.19 ! aaron 41: static char rcsid[] = "$OpenBSD: edit.c,v 1.18 1999/12/05 20:18:35 millert 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 (;;) {
1.6 deraadt 69: if (lstat(tempname, &begin) == -1 || S_ISLNK(begin.st_mode))
1.1 deraadt 70: pw_error(tempname, 1, 1);
1.2 deraadt 71: pw_edit(1, tempname);
1.7 deraadt 72: if (lstat(tempname, &end) == -1 || S_ISLNK(end.st_mode))
1.1 deraadt 73: pw_error(tempname, 1, 1);
1.17 ho 74: if (begin.st_mtime == end.st_mtime &&
75: begin.st_size == end.st_size) {
1.1 deraadt 76: warnx("no changes made");
77: pw_error(NULL, 0, 0);
78: }
1.18 millert 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;
1.13 deraadt 97: char *bp, *p;
98: char chngstr[256];
1.1 deraadt 99:
100: if (!(fp = fdopen(fd, "w")))
101: pw_error(tempname, 1, 1);
102:
103: (void)fprintf(fp,
104: "#Changing user database information for %s.\n", pw->pw_name);
105: if (!uid) {
106: (void)fprintf(fp, "Login: %s\n", pw->pw_name);
1.4 downsj 107: (void)fprintf(fp, "Encrypted password: %s\n", pw->pw_passwd);
1.16 deraadt 108: (void)fprintf(fp, "Uid [#]: %u\n", pw->pw_uid);
109: (void)fprintf(fp, "Gid [# or name]: %u\n", pw->pw_gid);
1.1 deraadt 110: (void)fprintf(fp, "Change [month day year]: %s\n",
1.13 deraadt 111: ttoa(chngstr, sizeof(chngstr), pw->pw_change));
1.1 deraadt 112: (void)fprintf(fp, "Expire [month day year]: %s\n",
1.13 deraadt 113: ttoa(chngstr, sizeof(chngstr), pw->pw_expire));
1.1 deraadt 114: (void)fprintf(fp, "Class: %s\n", pw->pw_class);
115: (void)fprintf(fp, "Home directory: %s\n", pw->pw_dir);
116: (void)fprintf(fp, "Shell: %s\n",
117: *pw->pw_shell ? pw->pw_shell : _PATH_BSHELL);
118: }
119: /* Only admin can change "restricted" shells. */
120: else if (ok_shell(pw->pw_shell))
121: /*
122: * Make shell a restricted field. Ugly with a
123: * necklace, but there's not much else to do.
124: */
125: (void)fprintf(fp, "Shell: %s\n",
126: *pw->pw_shell ? pw->pw_shell : _PATH_BSHELL);
127: else
128: list[E_SHELL].restricted = 1;
129: bp = pw->pw_gecos;
130: p = strsep(&bp, ",");
131: (void)fprintf(fp, "Full Name: %s\n", p ? p : "");
132: p = strsep(&bp, ",");
1.19 ! aaron 133: (void)fprintf(fp, "Office Location: %s\n", p ? p : "");
1.1 deraadt 134: p = strsep(&bp, ",");
135: (void)fprintf(fp, "Office Phone: %s\n", p ? p : "");
136: p = strsep(&bp, ",");
137: (void)fprintf(fp, "Home Phone: %s\n", p ? p : "");
138:
139: (void)fchown(fd, getuid(), getgid());
140: (void)fclose(fp);
141: }
142:
143: int
1.2 deraadt 144: verify(tempname, pw)
145: char *tempname;
1.1 deraadt 146: struct passwd *pw;
147: {
148: ENTRY *ep;
149: char *p;
150: struct stat sb;
151: FILE *fp;
1.11 deraadt 152: int len, alen, line;
1.1 deraadt 153: static char buf[LINE_MAX];
154:
155: if (!(fp = fopen(tempname, "r")))
156: pw_error(tempname, 1, 1);
157: if (fstat(fileno(fp), &sb))
158: pw_error(tempname, 1, 1);
159: if (sb.st_size == 0) {
160: warnx("corrupted temporary file");
161: goto bad;
162: }
1.11 deraadt 163: line = 0;
1.1 deraadt 164: while (fgets(buf, sizeof(buf), fp)) {
1.11 deraadt 165: line++;
1.1 deraadt 166: if (!buf[0] || buf[0] == '#')
167: continue;
168: if (!(p = strchr(buf, '\n'))) {
1.11 deraadt 169: warnx("line %d too long", line);
1.1 deraadt 170: goto bad;
171: }
172: *p = '\0';
173: for (ep = list;; ++ep) {
174: if (!ep->prompt) {
1.11 deraadt 175: warnx("unrecognized field on line %d", line);
1.1 deraadt 176: goto bad;
177: }
178: if (!strncasecmp(buf, ep->prompt, ep->len)) {
179: if (ep->restricted && uid) {
180: warnx(
181: "you may not change the %s field",
182: ep->prompt);
183: goto bad;
184: }
185: if (!(p = strchr(buf, ':'))) {
1.11 deraadt 186: warnx("line %d corrupted", line);
1.1 deraadt 187: goto bad;
188: }
189: while (isspace(*++p));
190: if (ep->except && strpbrk(p, ep->except)) {
191: warnx(
192: "illegal character in the \"%s\" field",
193: ep->prompt);
194: goto bad;
195: }
196: if ((ep->func)(p, pw, ep)) {
197: bad: (void)fclose(fp);
198: return (0);
199: }
200: break;
201: }
202: }
203: }
204: (void)fclose(fp);
1.14 deraadt 205:
206: if (list[E_NAME].save == NULL)
207: list[E_NAME].save = "";
208: if (list[E_BPHONE].save == NULL)
209: list[E_BPHONE].save = "";
210: if (list[E_HPHONE].save == NULL)
211: list[E_HPHONE].save = "";
212: if (list[E_LOCATE].save == NULL)
213: list[E_LOCATE].save = "";
1.1 deraadt 214:
215: /* Build the gecos field. */
216: len = strlen(list[E_NAME].save) + strlen(list[E_BPHONE].save) +
217: strlen(list[E_HPHONE].save) + strlen(list[E_LOCATE].save) + 4;
1.9 deraadt 218: for (alen = 0, p = list[E_NAME].save; *p; p++)
219: if (*p == '&')
220: alen = alen + strlen(pw->pw_name) - 1;
1.1 deraadt 221: if (!(p = malloc(len)))
222: err(1, NULL);
223: (void)sprintf(pw->pw_gecos = p, "%s,%s,%s,%s", list[E_NAME].save,
224: list[E_LOCATE].save, list[E_BPHONE].save, list[E_HPHONE].save);
225:
226: if (snprintf(buf, sizeof(buf),
1.16 deraadt 227: "%s:%s:%u:%u:%s:%ld:%ld:%s:%s:%s",
1.1 deraadt 228: pw->pw_name, pw->pw_passwd, pw->pw_uid, pw->pw_gid, pw->pw_class,
229: pw->pw_change, pw->pw_expire, pw->pw_gecos, pw->pw_dir,
1.10 deraadt 230: pw->pw_shell) >= 1023 ||
231: strlen(buf) + alen >= 1023) {
1.1 deraadt 232: warnx("entries too long");
1.9 deraadt 233: free(p);
1.1 deraadt 234: return (0);
235: }
1.9 deraadt 236: free(p);
237:
1.12 kstailey 238: return (pw_scan(buf, pw, NULL));
1.1 deraadt 239: }
![[BACK]](/icons/back.gif){kind=icon}
Return to edit.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / chpass