b87efe4572
/var/yp/master.passwd template file and it uses the same kind of code as chpass(1), it may also be vulnerable to the bug from PR #1519. May as well deal with it since I'm in the area. (yppasswdd in -stable doesn't do additions, therefore it shouldn't be have this problem.)
140 lines
4.2 KiB
C
140 lines
4.2 KiB
C
/*-
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* Copyright (c) 1990, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static char sccsid[] = "@(#)pw_copy.c 8.4 (Berkeley) 4/2/94";
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#endif /* not lint */
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/*
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* This module is used to copy the master password file, replacing a single
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* record, by chpass(1) and passwd(1).
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*/
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#include <err.h>
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#include <pwd.h>
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#include <stdio.h>
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#include <string.h>
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#include <pw_util.h>
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#include "yppasswdd_extern.h"
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int
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pw_copy(ffd, tfd, pw)
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int ffd, tfd;
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struct passwd *pw;
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{
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FILE *from, *to;
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int done;
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char *p, buf[8192];
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char uidstr[20];
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char gidstr[20];
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char chgstr[20];
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char expstr[20];
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snprintf(uidstr, sizeof(uidstr), "%d", pw->pw_uid);
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snprintf(gidstr, sizeof(gidstr), "%d", pw->pw_gid);
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snprintf(chgstr, sizeof(chgstr), "%ld", pw->pw_change);
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snprintf(expstr, sizeof(expstr), "%ld", pw->pw_expire);
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if (!(from = fdopen(ffd, "r"))) {
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pw_error(passfile, 1, 1);
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return(-1);
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}
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if (!(to = fdopen(tfd, "w"))) {
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pw_error(tempname, 1, 1);
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return(-1);
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}
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for (done = 0; fgets(buf, sizeof(buf), from);) {
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if (!strchr(buf, '\n')) {
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yp_error("%s: line too long", passfile);
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pw_error(NULL, 0, 1);
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goto err;
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}
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if (done) {
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(void)fprintf(to, "%s", buf);
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if (ferror(to))
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goto err;
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continue;
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}
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if (!(p = strchr(buf, ':'))) {
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yp_error("%s: corrupted entry", passfile);
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pw_error(NULL, 0, 1);
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goto err;
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}
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*p = '\0';
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if (strcmp(buf, pw->pw_name)) {
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*p = ':';
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(void)fprintf(to, "%s", buf);
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if (ferror(to))
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goto err;
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continue;
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}
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(void)fprintf(to, "%s:%s:%s:%s:%s:%s:%s:%s:%s:%s\n",
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pw->pw_name, pw->pw_passwd,
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pw->pw_fields & _PWF_UID ? uidstr : "",
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pw->pw_fields & _PWF_GID ? gidstr : "",
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pw->pw_class,
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pw->pw_fields & _PWF_CHANGE ? chgstr : "",
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pw->pw_fields & _PWF_EXPIRE ? expstr : "",
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pw->pw_gecos, pw->pw_dir, pw->pw_shell);
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done = 1;
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if (ferror(to))
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goto err;
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}
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if (!done) {
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if (allow_additions) {
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(void)fprintf(to, "%s:%s:%s:%s:%s:%s:%s:%s:%s:%s\n",
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pw->pw_name, pw->pw_passwd,
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pw->pw_fields & _PWF_UID ? uidstr : "",
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pw->pw_fields & _PWF_GID ? gidstr : "",
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pw->pw_class,
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pw->pw_fields & _PWF_CHANGE ? chgstr : "",
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pw->pw_fields & _PWF_EXPIRE ? expstr : "",
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pw->pw_gecos, pw->pw_dir, pw->pw_shell);
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} else {
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yp_error("user \"%s\" not found in %s -- \
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NIS maps and password file possibly out of sync", pw->pw_name, passfile);
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goto err;
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}
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}
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if (ferror(to)) {
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err: pw_error(NULL, 1, 1);
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(void)fclose(to);
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(void)fclose(from);
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return(-1);
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}
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(void)fclose(to);
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(void)fclose(from);
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return(0);
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}
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