| File: | src/libexec/login_reject/login_reject.c |
| Warning: | line 109, column 3 Value stored to 'c' is never read |
Press '?' to see keyboard shortcuts
Keyboard shortcuts:
| 1 | /* $OpenBSD: login_reject.c,v 1.18 2021/10/23 19:08:48 mestre Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 1995 Berkeley Software Design, Inc. All rights reserved. |
| 5 | * |
| 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions |
| 8 | * are met: |
| 9 | * 1. Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * 2. Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
| 14 | * 3. All advertising materials mentioning features or use of this software |
| 15 | * must display the following acknowledgement: |
| 16 | * This product includes software developed by Berkeley Software Design, |
| 17 | * Inc. |
| 18 | * 4. The name of Berkeley Software Design, Inc. may not be used to endorse |
| 19 | * or promote products derived from this software without specific prior |
| 20 | * written permission. |
| 21 | * |
| 22 | * THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN, INC. ``AS IS'' AND |
| 23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 25 | * ARE DISCLAIMED. IN NO EVENT SHALL BERKELEY SOFTWARE DESIGN, INC. BE LIABLE |
| 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 32 | * SUCH DAMAGE. |
| 33 | * |
| 34 | * BSDI $From: login_reject.c,v 1.5 1996/08/22 20:43:11 prb Exp $ |
| 35 | */ |
| 36 | |
| 37 | #include <sys/resource.h> |
| 38 | |
| 39 | #include <login_cap.h> |
| 40 | #include <readpassphrase.h> |
| 41 | #include <stdio.h> |
| 42 | #include <stdlib.h> |
| 43 | #include <string.h> |
| 44 | #include <syslog.h> |
| 45 | #include <unistd.h> |
| 46 | |
| 47 | int |
| 48 | main(int argc, char *argv[]) |
| 49 | { |
| 50 | struct rlimit rl; |
| 51 | FILE *back; |
| 52 | char passbuf[1]; |
| 53 | int mode = 0, c; |
| 54 | |
| 55 | rl.rlim_cur = 0; |
| 56 | rl.rlim_max = 0; |
| 57 | (void)setrlimit(RLIMIT_CORE4, &rl); |
| 58 | |
| 59 | (void)setpriority(PRIO_PROCESS0, 0, 0); |
| 60 | |
| 61 | if (pledge("stdio rpath tty", NULL((void *)0)) == -1) { |
| 62 | syslog(LOG_AUTH(4<<3)|LOG_ERR3, "pledge: %m"); |
| 63 | exit(1); |
| 64 | } |
| 65 | |
| 66 | openlog("login", LOG_ODELAY0x04, LOG_AUTH(4<<3)); |
| 67 | |
| 68 | while ((c = getopt(argc, argv, "v:s:")) != -1) |
| 69 | switch (c) { |
| 70 | case 'v': |
| 71 | break; |
| 72 | case 's': /* service */ |
| 73 | if (strcmp(optarg, "login") == 0) |
| 74 | mode = 0; |
| 75 | else if (strcmp(optarg, "challenge") == 0) |
| 76 | mode = 1; |
| 77 | else if (strcmp(optarg, "response") == 0) |
| 78 | mode = 2; |
| 79 | else { |
| 80 | syslog(LOG_ERR3, "%s: invalid service", optarg); |
| 81 | exit(1); |
| 82 | } |
| 83 | break; |
| 84 | default: |
| 85 | syslog(LOG_ERR3, "usage error"); |
| 86 | exit(1); |
| 87 | } |
| 88 | |
| 89 | switch (argc - optind) { |
| 90 | case 2: |
| 91 | case 1: |
| 92 | break; |
| 93 | default: |
| 94 | syslog(LOG_ERR3, "usage error"); |
| 95 | exit(1); |
| 96 | } |
| 97 | |
| 98 | if (!(back = fdopen(3, "r+"))) { |
| 99 | syslog(LOG_ERR3, "reopening back channel: %m"); |
| 100 | exit(1); |
| 101 | } |
| 102 | if (mode == 1) { |
| 103 | fprintf(back, BI_SILENT"reject silent" "\n"); |
| 104 | exit(0); |
| 105 | } |
| 106 | |
| 107 | if (mode == 2) { |
| 108 | mode = 0; |
| 109 | c = -1; |
Value stored to 'c' is never read | |
| 110 | while (read(3, passbuf, 1) == 1) { |
| 111 | if (passbuf[0] == '\0' && ++mode == 2) |
| 112 | break; |
| 113 | } |
| 114 | if (mode < 2) { |
| 115 | syslog(LOG_ERR3, "protocol error on back channel"); |
| 116 | exit(1); |
| 117 | } |
| 118 | } else |
| 119 | readpassphrase("Password:", passbuf, sizeof(passbuf), 0); |
| 120 | |
| 121 | crypt_checkpass("password", NULL((void *)0)); |
| 122 | explicit_bzero(passbuf, sizeof(passbuf)); |
| 123 | |
| 124 | fprintf(back, BI_REJECT"reject" "\n"); |
| 125 | exit(1); |
| 126 | } |