chpass.tproj/pw_copy.c

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * "Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
   7  * Reserved.  This file contains Original Code and/or Modifications of
   8  * Original Code as defined in and that are subject to the Apple Public
   9  * Source License Version 1.0 (the 'License').  You may not use this file
  10  * except in compliance with the License.  Please obtain a copy of the
  11  * License at http://www.apple.com/publicsource and read it before using
  12  * this file.
  13  *
  14  * The Original Code and all software distributed under the License are
  15  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  16  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  17  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  19  * License for the specific language governing rights and limitations
  20  * under the License."
  21  *
  22  * @APPLE_LICENSE_HEADER_END@
  23  */
  24 /*-
  25  * Copyright (c) 1990, 1993, 1994
  26  *      The Regents of the University of California.  All rights reserved.
  27  *
  28  * Redistribution and use in source and binary forms, with or without
  29  * modification, are permitted provided that the following conditions
  30  * are met:
  31  * 1. Redistributions of source code must retain the above copyright
  32  *    notice, this list of conditions and the following disclaimer.
  33  * 2. Redistributions in binary form must reproduce the above copyright
  34  *    notice, this list of conditions and the following disclaimer in the
  35  *    documentation and/or other materials provided with the distribution.
  36  * 3. All advertising materials mentioning features or use of this software
  37  *    must display the following acknowledgement:
  38  *      This product includes software developed by the University of
  39  *      California, Berkeley and its contributors.
  40  * 4. Neither the name of the University nor the names of its contributors
  41  *    may be used to endorse or promote products derived from this software
  42  *    without specific prior written permission.
  43  *
  44  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  45  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  46  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  47  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  48  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  49  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  50  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  51  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  52  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  53  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  54  * SUCH DAMAGE.
  55  */
  56
  57 /*
  58  * This module is used to copy the master password file, replacing a single
  59  * record, by chpass(1) and passwd(1).
  60  */
  61
  62 #include <err.h>
  63 #include <pwd.h>
  64 #include <stdio.h>
  65 #include <string.h>
  66
  67 #include <pw_util.h>
  68 #include "pw_copy.h"
  69
  70 extern char *tempname;
  71
  72 void
  73 pw_copy(ffd, tfd, pw)
  74         int ffd, tfd;
  75         struct passwd *pw;
  76 {
  77         FILE *from, *to;
  78         int done;
  79         char *p, buf[8192];
  80
  81         if (!(from = fdopen(ffd, "r")))
  82                 pw_error(_PATH_MASTERPASSWD, 1, 1);
  83         if (!(to = fdopen(tfd, "w")))
  84                 pw_error(tempname, 1, 1);
  85
  86         for (done = 0; fgets(buf, sizeof(buf), from);) {
  87                 if (!strchr(buf, '\n')) {
  88                         warnx("%s: line too long", _PATH_MASTERPASSWD);
  89                         pw_error(NULL, 0, 1);
  90                 }
  91 #if defined(__APPLE__)
  92                 if (done || (buf[0] == '#')) {
  93 #else
  94                 if (done) {
  95 #endif
  96                         (void)fprintf(to, "%s", buf);
  97                         if (ferror(to))
  98                                 goto err;
  99                         continue;
 100                 }
 101                 if (!(p = strchr(buf, ':'))) {
 102                         warnx("%s: corrupted entry", _PATH_MASTERPASSWD);
 103                         pw_error(NULL, 0, 1);
 104                 }
 105                 *p = '\0';
 106                 if (strcmp(buf, pw->pw_name)) {
 107                         *p = ':';
 108                         (void)fprintf(to, "%s", buf);
 109                         if (ferror(to))
 110                                 goto err;
 111                         continue;
 112                 }
 113                 (void)fprintf(to, "%s:%s:%d:%d:%s:%ld:%ld:%s:%s:%s\n",
 114                     pw->pw_name, pw->pw_passwd, pw->pw_uid, pw->pw_gid,
 115                     pw->pw_class, pw->pw_change, pw->pw_expire, pw->pw_gecos,
 116                     pw->pw_dir, pw->pw_shell);
 117                 done = 1;
 118                 if (ferror(to))
 119                         goto err;
 120         }
 121         if (!done)
 122                 (void)fprintf(to, "%s:%s:%d:%d:%s:%ld:%ld:%s:%s:%s\n",
 123                     pw->pw_name, pw->pw_passwd, pw->pw_uid, pw->pw_gid,
 124                     pw->pw_class, pw->pw_change, pw->pw_expire, pw->pw_gecos,
 125                     pw->pw_dir, pw->pw_shell);
 126
 127         if (ferror(to))
 128 err:            pw_error(NULL, 1, 1);
 129         (void)fclose(to);
 130 }