81cfeee7bf
unfixed bug in the jail() implementation relating to using the connect() system call on UDP sockets. PR: 26506
111 lines
2.9 KiB
C
111 lines
2.9 KiB
C
/*-
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* Copyright (c) 2005 Robert N. M. Watson
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/jail.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <err.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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/*
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* A bug in the jail(8) code prevented processes in jail from properly
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* connecting UDP sockets. This test program attempts to exercise that bug.
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*/
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static void
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usage(void)
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{
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fprintf(stderr, "udpconnectjail: no arguments\n");
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exit(-1);
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}
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static void
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test(const char *context, struct sockaddr_in *sin)
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{
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int sock;
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sock = socket(PF_INET, SOCK_DGRAM, 0);
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if (sock == -1)
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errx(-1, "%s: socket(PF_INET, SOCK_DGRAM, 0): %s", context,
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strerror(errno));
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if (connect(sock, (struct sockaddr *)&sin, sizeof(sin)) < 0)
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errx(-1, "%s: connect(%s): %s", context,
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inet_ntoa(sin->sin_addr), strerror(errno));
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if (close(sock) < 0)
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errx(-1, "%s: close(): %s", context, strerror(errno));
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}
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int
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main(int argc, __unused char *argv[])
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{
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struct sockaddr_in sin;
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struct jail thejail;
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if (argc != 1)
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usage();
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bzero(&sin, sizeof(sin));
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sin.sin_len = sizeof(sin);
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sin.sin_family = AF_INET;
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sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
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sin.sin_port = 0;
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/*
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* First run the system call test outside of a jail.
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*/
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test("not in jail", &sin);
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/*
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* Now re-run in a jail.
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*/
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bzero(&thejail, sizeof(thejail));
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thejail.version = 0;
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thejail.path = "/";
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thejail.hostname = "jail";
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thejail.ip_number = htonl(INADDR_LOOPBACK);
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if (jail(&thejail) < 0)
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errx(-1, "jail: %s", strerror(errno));
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test("in jail", &sin);
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fprintf(stdout, "PASS\n");
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return (0);
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}
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