| | 1 | /* $OpenBSD: passwd.c,v 1.42 2003/06/26 16:34:42 deraadt Exp $ */ |
| | 2 | |
| | 3 | /* |
| | 4 | * Copyright (c) 1987, 1993, 1994, 1995 |
| | 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. Neither the name of the University nor the names of its contributors |
| | 16 | * may be used to endorse or promote products derived from this software |
| | 17 | * without specific prior written permission. |
| | 18 | * |
| | 19 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| | 20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| | 21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| | 22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| | 23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| | 24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| | 25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| | 26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| | 27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| | 28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| | 29 | * SUCH DAMAGE. |
| | 30 | */ |
| | 31 | |
| | 32 | #if defined(LIBC_SCCS) && !defined(lint) |
| | 33 | static const char rcsid[] = "$OpenBSD: passwd.c,v 1.42 2003/06/26 16:34:42 deraadt Exp $"; |
| | 34 | #endif /* LIBC_SCCS and not lint */ |
| | 35 | |
| | 36 | #include <sys/types.h> |
| | 37 | #include <sys/stat.h> |
| | 38 | #include <sys/time.h> |
| | 39 | #include <sys/resource.h> |
| | 40 | #include <sys/wait.h> |
| | 41 | |
| | 42 | #include <fcntl.h> |
| | 43 | #include <unistd.h> |
| | 44 | #include <stdlib.h> |
| | 45 | #include <stdio.h> |
| | 46 | #include <string.h> |
| | 47 | #include <ctype.h> |
| | 48 | #include <pwd.h> |
| | 49 | #include <err.h> |
| | 50 | #include <errno.h> |
| | 51 | #include <paths.h> |
| | 52 | #include <signal.h> |
| | 53 | #include <limits.h> |
| | 54 | |
| | 55 | #include "util.h" |
| | 56 | |
| | 57 | int |
| | 58 | pw_scan(char *bp, struct passwd *pw, int *flags) |
| | 59 | { |
| | 60 | u_long id; |
| | 61 | int root; |
| | 62 | char *p, *sh, *p2; |
| | 63 | |
| | 64 | if (flags != (int *)NULL) |
| | 65 | *flags = 0; |
| | 66 | |
| | 67 | #ifdef __APPLE__ |
| | 68 | if (bp[0] == '#') { |
| | 69 | pw->pw_name = NULL; |
| | 70 | return(1); |
| | 71 | } |
| | 72 | #endif |
| | 73 | |
| | 74 | if (!(p = strsep(&bp, ":")) || *p == '\0') /* login */ |
| | 75 | goto fmt; |
| | 76 | pw->pw_name = p; |
| | 77 | root = !strcmp(pw->pw_name, "root"); |
| | 78 | |
| | 79 | if (!(pw->pw_passwd = strsep(&bp, ":"))) /* passwd */ |
| | 80 | goto fmt; |
| | 81 | |
| | 82 | if (!(p = strsep(&bp, ":"))) /* uid */ |
| | 83 | goto fmt; |
| | 84 | id = strtoul(p, &p2, 10); |
| | 85 | if (root && id) { |
| | 86 | warnx("root uid should be 0"); |
| | 87 | return (0); |
| | 88 | } |
| | 89 | if (*p2 != '\0') { |
| | 90 | warnx("illegal uid field"); |
| | 91 | return (0); |
| | 92 | } |
| | 93 | #ifndef __APPLE__ |
| | 94 | /* Apple's UID_MAX is too small (sizeof signed) 3091256 */ |
| | 95 | if (id > UID_MAX) { |
| | 96 | /* errno is set to ERANGE by strtoul(3) */ |
| | 97 | warnx("uid greater than %u", UID_MAX-1); |
| | 98 | return (0); |
| | 99 | } |
| | 100 | #endif |
| | 101 | pw->pw_uid = (uid_t)id; |
| | 102 | if ((*p == '\0') && (flags != (int *)NULL)) |
| | 103 | *flags |= _PASSWORD_NOUID; |
| | 104 | |
| | 105 | if (!(p = strsep(&bp, ":"))) /* gid */ |
| | 106 | goto fmt; |
| | 107 | id = strtoul(p, &p2, 10); |
| | 108 | if (*p2 != '\0') { |
| | 109 | warnx("illegal gid field"); |
| | 110 | return (0); |
| | 111 | } |
| | 112 | #ifndef __APPLE__ |
| | 113 | /* Apple's UID_MAX is too small (sizeof signed) 3091256 */ |
| | 114 | if (id > UID_MAX) { |
| | 115 | /* errno is set to ERANGE by strtoul(3) */ |
| | 116 | warnx("gid greater than %u", UID_MAX-1); |
| | 117 | return (0); |
| | 118 | } |
| | 119 | #endif |
| | 120 | pw->pw_gid = (gid_t)id; |
| | 121 | if ((*p == '\0') && (flags != (int *)NULL)) |
| | 122 | *flags |= _PASSWORD_NOGID; |
| | 123 | |
| | 124 | pw->pw_class = strsep(&bp, ":"); /* class */ |
| | 125 | if (!(p = strsep(&bp, ":"))) /* change */ |
| | 126 | goto fmt; |
| | 127 | pw->pw_change = atol(p); |
| | 128 | if ((*p == '\0') && (flags != (int *)NULL)) |
| | 129 | *flags |= _PASSWORD_NOCHG; |
| | 130 | if (!(p = strsep(&bp, ":"))) /* expire */ |
| | 131 | goto fmt; |
| | 132 | pw->pw_expire = atol(p); |
| | 133 | if ((*p == '\0') && (flags != (int *)NULL)) |
| | 134 | *flags |= _PASSWORD_NOEXP; |
| | 135 | pw->pw_gecos = strsep(&bp, ":"); /* gecos */ |
| | 136 | pw->pw_dir = strsep(&bp, ":"); /* directory */ |
| | 137 | if (!(pw->pw_shell = strsep(&bp, ":"))) /* shell */ |
| | 138 | goto fmt; |
| | 139 | |
| | 140 | p = pw->pw_shell; |
| | 141 | if (root && *p) { /* empty == /bin/sh */ |
| | 142 | for (setusershell();;) { |
| | 143 | if (!(sh = getusershell())) { |
| | 144 | warnx("warning, unknown root shell"); |
| | 145 | break; |
| | 146 | } |
| | 147 | if (!strcmp(p, sh)) |
| | 148 | break; |
| | 149 | } |
| | 150 | endusershell(); |
| | 151 | } |
| | 152 | |
| | 153 | if ((p = strsep(&bp, ":"))) { /* too many */ |
| | 154 | fmt: warnx("corrupted entry"); |
| | 155 | return (0); |
| | 156 | } |
| | 157 | |
| | 158 | return (1); |
| | 159 | } |
projects / apple / system_cmds.git / blame_incremental