1 /*- 2 * Copyright (c) 2005 Robert N. M. Watson 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 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/param.h> 28 #include <sys/jail.h> 29 #include <sys/socket.h> 30 31 #include <netinet/in.h> 32 33 #include <arpa/inet.h> 34 35 #include <err.h> 36 #include <errno.h> 37 #include <stdio.h> 38 #include <stdlib.h> 39 #include <string.h> 40 #include <unistd.h> 41 42 /* 43 * A bug in the jail(8) code prevented processes in jail from properly 44 * connecting UDP sockets. This test program attempts to exercise that bug. 45 */ 46 47 static void 48 usage(void) 49 { 50 51 fprintf(stderr, "udpconnectjail: no arguments\n"); 52 exit(-1); 53 } 54 55 static void 56 test(const char *context, struct sockaddr_in *sin) 57 { 58 int sock; 59 60 sock = socket(PF_INET, SOCK_DGRAM, 0); 61 if (sock == -1) 62 errx(-1, "%s: socket(PF_INET, SOCK_DGRAM, 0): %s", context, 63 strerror(errno)); 64 65 if (connect(sock, (struct sockaddr *)sin, sizeof(*sin)) < 0) 66 errx(-1, "%s: connect(%s): %s", context, 67 inet_ntoa(sin->sin_addr), strerror(errno)); 68 69 if (close(sock) < 0) 70 errx(-1, "%s: close(): %s", context, strerror(errno)); 71 } 72 73 int 74 main(int argc, __unused char *argv[]) 75 { 76 struct sockaddr_in sin; 77 struct jail thejail; 78 struct in_addr ia4; 79 80 if (argc != 1) 81 usage(); 82 83 bzero(&sin, sizeof(sin)); 84 sin.sin_len = sizeof(sin); 85 sin.sin_family = AF_INET; 86 sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 87 sin.sin_port = htons(8080); /* Arbitrary */ 88 89 /* 90 * First run the system call test outside of a jail. 91 */ 92 test("not in jail", &sin); 93 94 /* 95 * Now re-run in a jail. 96 * XXX-BZ should switch to jail_set(2). 97 */ 98 ia4.s_addr = htonl(INADDR_LOOPBACK); 99 100 bzero(&thejail, sizeof(thejail)); 101 thejail.version = JAIL_API_VERSION; 102 thejail.path = "/"; 103 thejail.hostname = "jail"; 104 thejail.jailname = "udpconnectjail"; 105 thejail.ip4s = 1; 106 thejail.ip4 = &ia4; 107 108 if (jail(&thejail) < 0) 109 errx(-1, "jail: %s", strerror(errno)); 110 test("in jail", &sin); 111 112 fprintf(stdout, "PASS\n"); 113 114 return (0); 115 } 116