projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| a8ba39a3 WJ |
1 | /*- |
| 2 | * Copyright (c) 1990 The Regents of the University of California. | |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * Redistribution and use in source and binary forms, with or without | |
| 6 | * modification, are permitted provided that the following conditions | |
| 7 | * are met: | |
| 8 | * 1. Redistributions of source code must retain the above copyright | |
| 9 | * notice, this list of conditions and the following disclaimer. | |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 11 | * notice, this list of conditions and the following disclaimer in the | |
| 12 | * documentation and/or other materials provided with the distribution. | |
| 13 | * 3. All advertising materials mentioning features or use of this software | |
| 14 | * must display the following acknowledgement: | |
| 15 | * This product includes software developed by the University of | |
| 16 | * California, Berkeley and its contributors. | |
| 17 | * 4. Neither the name of the University nor the names of its contributors | |
| 18 | * may be used to endorse or promote products derived from this software | |
| 19 | * without specific prior written permission. | |
| 20 | * | |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 31 | * SUCH DAMAGE. | |
| 32 | */ | |
| 33 | ||
| 34 | #ifndef lint | |
| 35 | static char sccsid[] = "@(#)pw_scan.c 5.1 (Berkeley) 2/12/91"; | |
| 36 | #endif /* not lint */ | |
| 37 | ||
| 38 | /* | |
| 39 | * This module is used to "verify" password entries by chpass(1) and | |
| 40 | * pwd_mkdb(8). | |
| 41 | */ | |
| 42 | ||
| 43 | #include <sys/param.h> | |
| 44 | #include <fcntl.h> | |
| 45 | #include <pwd.h> | |
| 46 | #include <errno.h> | |
| 47 | #include <stdio.h> | |
| 48 | #include <string.h> | |
| 49 | #include <stdlib.h> | |
| 50 | ||
| 51 | extern char *progname; | |
| 52 | ||
| 53 | pw_scan(bp, pw) | |
| 54 | char *bp; | |
| 55 | struct passwd *pw; | |
| 56 | { | |
| 57 | register long id; | |
| 58 | register int root; | |
| 59 | register char *p, *sh; | |
| 60 | char *getusershell(); | |
| 61 | ||
| 62 | if (!(pw->pw_name = strsep(&bp, ":"))) /* login */ | |
| 63 | goto fmt; | |
| 64 | root = !strcmp(pw->pw_name, "root"); | |
| 65 | ||
| 66 | if (!(pw->pw_passwd = strsep(&bp, ":"))) /* passwd */ | |
| 67 | goto fmt; | |
| 68 | ||
| 69 | if (!(p = strsep(&bp, ":"))) /* uid */ | |
| 70 | goto fmt; | |
| 71 | id = atol(p); | |
| 72 | if (root && id) { | |
| 73 | (void)fprintf(stderr, "%s: root uid should be 0", progname); | |
| 74 | return(0); | |
| 75 | } | |
| 76 | if (id > USHRT_MAX) { | |
| 77 | (void)fprintf(stderr, | |
| 78 | "%s: %s > max uid value (%d)", progname, p, USHRT_MAX); | |
| 79 | return(0); | |
| 80 | } | |
| 81 | pw->pw_uid = id; | |
| 82 | ||
| 83 | if (!(p = strsep(&bp, ":"))) /* gid */ | |
| 84 | goto fmt; | |
| 85 | id = atol(p); | |
| 86 | if (id > USHRT_MAX) { | |
| 87 | (void)fprintf(stderr, | |
| 88 | "%s: %s > max gid value (%d)", progname, p, USHRT_MAX); | |
| 89 | return(0); | |
| 90 | } | |
| 91 | pw->pw_gid = id; | |
| 92 | ||
| 93 | pw->pw_class = strsep(&bp, ":"); /* class */ | |
| 94 | if (!(p = strsep(&bp, ":"))) /* change */ | |
| 95 | goto fmt; | |
| 96 | pw->pw_change = atol(p); | |
| 97 | if (!(p = strsep(&bp, ":"))) /* expire */ | |
| 98 | goto fmt; | |
| 99 | pw->pw_expire = atol(p); | |
| 100 | pw->pw_gecos = strsep(&bp, ":"); /* gecos */ | |
| 101 | pw->pw_dir = strsep(&bp, ":"); /* directory */ | |
| 102 | if (!(pw->pw_shell = strsep(&bp, ":"))) /* shell */ | |
| 103 | goto fmt; | |
| 104 | ||
| 105 | p = pw->pw_shell; | |
| 106 | if (root && *p) /* empty == /bin/sh */ | |
| 107 | for (setusershell();;) { | |
| 108 | if (!(sh = getusershell())) { | |
| 109 | (void)fprintf(stderr, | |
| 110 | "%s: warning, unknown root shell\n", | |
| 111 | progname); | |
| 112 | break; | |
| 113 | } | |
| 114 | if (!strcmp(p, sh)) | |
| 115 | break; | |
| 116 | } | |
| 117 | ||
| 118 | if (p = strsep(&bp, ":")) { /* too many */ | |
| 119 | fmt: (void)fprintf(stderr, "%s: corrupted entry\n", progname); | |
| 120 | return(0); | |
| 121 | } | |
| 122 | return(1); | |
| 123 | } |