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Annotation of src/usr.bin/chpass/pw_copy.c, Revision 1.1.1.1

1.1       deraadt     1: /*     $NetBSD: pw_copy.c,v 1.3 1995/03/26 04:55:30 glass Exp $        */
                      2:
                      3: /*-
                      4:  * Copyright (c) 1990, 1993, 1994
                      5:  *     The Regents of the University of California.  All rights reserved.
                      6:  *
                      7:  * Redistribution and use in source and binary forms, with or without
                      8:  * modification, are permitted provided that the following conditions
                      9:  * are met:
                     10:  * 1. Redistributions of source code must retain the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer.
                     12:  * 2. Redistributions in binary form must reproduce the above copyright
                     13:  *    notice, this list of conditions and the following disclaimer in the
                     14:  *    documentation and/or other materials provided with the distribution.
                     15:  * 3. All advertising materials mentioning features or use of this software
                     16:  *    must display the following acknowledgement:
                     17:  *     This product includes software developed by the University of
                     18:  *     California, Berkeley and its contributors.
                     19:  * 4. Neither the name of the University nor the names of its contributors
                     20:  *    may be used to endorse or promote products derived from this software
                     21:  *    without specific prior written permission.
                     22:  *
                     23:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     24:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     25:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     26:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     27:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     28:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     29:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     30:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     31:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     32:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     33:  * SUCH DAMAGE.
                     34:  */
                     35:
                     36: #ifndef lint
                     37: #if 0
                     38: static char sccsid[] = "@(#)pw_copy.c  8.4 (Berkeley) 4/2/94";
                     39: #else
                     40: static char rcsid[] = "$NetBSD: pw_copy.c,v 1.3 1995/03/26 04:55:30 glass Exp $";
                     41: #endif
                     42: #endif /* not lint */
                     43:
                     44: /*
                     45:  * This module is used to copy the master password file, replacing a single
                     46:  * record, by chpass(1) and passwd(1).
                     47:  */
                     48:
                     49: #include <err.h>
                     50: #include <pwd.h>
                     51: #include <stdio.h>
                     52: #include <string.h>
                     53:
                     54: #include <pw_util.h>
                     55: #include "pw_copy.h"
                     56:
                     57: extern char *tempname;
                     58:
                     59: void
                     60: pw_copy(ffd, tfd, pw)
                     61:        int ffd, tfd;
                     62:        struct passwd *pw;
                     63: {
                     64:        FILE *from, *to;
                     65:        int done;
                     66:        char *p, buf[8192];
                     67:
                     68:        if (!(from = fdopen(ffd, "r")))
                     69:                pw_error(_PATH_MASTERPASSWD, 1, 1);
                     70:        if (!(to = fdopen(tfd, "w")))
                     71:                pw_error(tempname, 1, 1);
                     72:
                     73:        for (done = 0; fgets(buf, sizeof(buf), from);) {
                     74:                if (!strchr(buf, '\n')) {
                     75:                        warnx("%s: line too long", _PATH_MASTERPASSWD);
                     76:                        pw_error(NULL, 0, 1);
                     77:                }
                     78:                if (done) {
                     79:                        (void)fprintf(to, "%s", buf);
                     80:                        if (ferror(to))
                     81:                                goto err;
                     82:                        continue;
                     83:                }
                     84:                if (!(p = strchr(buf, ':'))) {
                     85:                        warnx("%s: corrupted entry", _PATH_MASTERPASSWD);
                     86:                        pw_error(NULL, 0, 1);
                     87:                }
                     88:                *p = '\0';
                     89:                if (strcmp(buf, pw->pw_name)) {
                     90:                        *p = ':';
                     91:                        (void)fprintf(to, "%s", buf);
                     92:                        if (ferror(to))
                     93:                                goto err;
                     94:                        continue;
                     95:                }
                     96:                (void)fprintf(to, "%s:%s:%d:%d:%s:%ld:%ld:%s:%s:%s\n",
                     97:                    pw->pw_name, pw->pw_passwd, pw->pw_uid, pw->pw_gid,
                     98:                    pw->pw_class, pw->pw_change, pw->pw_expire, pw->pw_gecos,
                     99:                    pw->pw_dir, pw->pw_shell);
                    100:                done = 1;
                    101:                if (ferror(to))
                    102:                        goto err;
                    103:        }
                    104:        if (!done)
                    105:                (void)fprintf(to, "%s:%s:%d:%d:%s:%ld:%ld:%s:%s:%s\n",
                    106:                    pw->pw_name, pw->pw_passwd, pw->pw_uid, pw->pw_gid,
                    107:                    pw->pw_class, pw->pw_change, pw->pw_expire, pw->pw_gecos,
                    108:                    pw->pw_dir, pw->pw_shell);
                    109:
                    110:        if (ferror(to))
                    111: err:           pw_error(NULL, 1, 1);
                    112:        (void)fclose(to);
                    113: }