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- /*-
- * Copyright (c) 1990 The Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
- #ifndef lint
- static char sccsid[] = "@(#)edit.c 5.2 (Berkeley) 3/3/91";
- #endif /* not lint */
-
- #include <sys/param.h>
- #include <sys/stat.h>
- #include <pwd.h>
- #include <errno.h>
- #include <stdio.h>
- #include <paths.h>
- #include <stdlib.h>
- #include <string.h>
- #include "chpass.h"
-
- extern char *tempname;
-
- void
- edit(pw)
- struct passwd *pw;
- {
- struct stat begin, end;
-
- for (;;) {
- if (stat(tempname, &begin))
- pw_error(tempname, 1, 1);
- pw_edit(1);
- if (stat(tempname, &end))
- pw_error(tempname, 1, 1);
- if (begin.st_mtime == end.st_mtime) {
- (void)fprintf(stderr, "chpass: no changes made\n");
- pw_error((char *)NULL, 0, 0);
- }
- if (verify(pw))
- break;
- pw_prompt();
- }
- }
-
- /*
- * display --
- * print out the file for the user to edit; strange side-effect:
- * set conditional flag if the user gets to edit the shell.
- */
- display(fd, pw)
- int fd;
- struct passwd *pw;
- {
- register char *p;
- FILE *fp;
- char *bp, *ok_shell(), *ttoa();
-
- if (!(fp = fdopen(fd, "w")))
- pw_error(tempname, 1, 1);
-
- (void)fprintf(fp,
- "#Changing user database information for %s.\n", pw->pw_name);
- if (!uid) {
- (void)fprintf(fp, "Login: %s\n", pw->pw_name);
- (void)fprintf(fp, "Password: %s\n", pw->pw_passwd);
- (void)fprintf(fp, "Uid [#]: %d\n", pw->pw_uid);
- (void)fprintf(fp, "Gid [# or name]: %d\n", pw->pw_gid);
- (void)fprintf(fp, "Change [month day year]: %s\n",
- ttoa(pw->pw_change));
- (void)fprintf(fp, "Expire [month day year]: %s\n",
- ttoa(pw->pw_expire));
- (void)fprintf(fp, "Class: %s\n", pw->pw_class);
- (void)fprintf(fp, "Home directory: %s\n", pw->pw_dir);
- (void)fprintf(fp, "Shell: %s\n",
- *pw->pw_shell ? pw->pw_shell : _PATH_BSHELL);
- }
- /* Only admin can change "restricted" shells. */
- else if (ok_shell(pw->pw_shell))
- /*
- * Make shell a restricted field. Ugly with a
- * necklace, but there's not much else to do.
- */
- (void)fprintf(fp, "Shell: %s\n",
- *pw->pw_shell ? pw->pw_shell : _PATH_BSHELL);
- else
- list[E_SHELL].restricted = 1;
- bp = pw->pw_gecos;
- p = strsep(&bp, ",");
- (void)fprintf(fp, "Full Name: %s\n", p ? p : "");
- p = strsep(&bp, ",");
- (void)fprintf(fp, "Location: %s\n", p ? p : "");
- p = strsep(&bp, ",");
- (void)fprintf(fp, "Office Phone: %s\n", p ? p : "");
- p = strsep(&bp, ",");
- (void)fprintf(fp, "Home Phone: %s\n", p ? p : "");
-
- (void)fchown(fd, getuid(), getgid());
- (void)fclose(fp);
- }
-
- verify(pw)
- struct passwd *pw;
- {
- register ENTRY *ep;
- register char *p;
- FILE *fp;
- int len;
- char buf[LINE_MAX];
-
- if (!(fp = fopen(tempname, "r")))
- pw_error(tempname, 1, 1);
- while (fgets(buf, sizeof(buf), fp)) {
- if (!buf[0] || buf[0] == '#')
- continue;
- if (!(p = index(buf, '\n'))) {
- (void)fprintf(stderr, "chpass: line too long.\n");
- goto bad;
- }
- *p = '\0';
- for (ep = list;; ++ep) {
- if (!ep->prompt) {
- (void)fprintf(stderr,
- "chpass: unrecognized field.\n");
- goto bad;
- }
- if (!strncasecmp(buf, ep->prompt, ep->len)) {
- if (ep->restricted && uid) {
- (void)fprintf(stderr,
- "chpass: you may not change the %s field.\n",
- ep->prompt);
- goto bad;
- }
- if (!(p = index(buf, ':'))) {
- (void)fprintf(stderr,
- "chpass: line corrupted.\n");
- goto bad;
- }
- while (isspace(*++p));
- if (ep->except && strpbrk(p, ep->except)) {
- (void)fprintf(stderr,
- "chpass: illegal character in the \"%s\" field.\n",
- ep->prompt);
- goto bad;
- }
- if ((ep->func)(p, pw, ep)) {
- bad: (void)fclose(fp);
- return(0);
- }
- break;
- }
- }
- }
- (void)fclose(fp);
-
- /* Build the gecos field. */
- len = strlen(list[E_NAME].save) + strlen(list[E_BPHONE].save) +
- strlen(list[E_HPHONE].save) + strlen(list[E_LOCATE].save) + 4;
- if (!(p = malloc(len))) {
- (void)fprintf(stderr, "chpass: %s\n", strerror(errno));
- exit(1);
- }
- (void)sprintf(pw->pw_gecos = p, "%s,%s,%s,%s", list[E_NAME].save,
- list[E_LOCATE].save, list[E_BPHONE].save, list[E_HPHONE].save);
-
- if (snprintf(buf, sizeof(buf),
- "%s:%s:%d:%d:%s:%ld:%ld:%s:%s:%s",
- pw->pw_name, pw->pw_passwd, pw->pw_uid, pw->pw_gid, pw->pw_class,
- pw->pw_change, pw->pw_expire, pw->pw_gecos, pw->pw_dir,
- pw->pw_shell) >= sizeof(buf)) {
- (void)fprintf(stderr, "chpass: entries too long\n");
- return(0);
- }
- return(pw_scan(buf, pw));
- }
-