/******************************************************************************/
/* This program is free software; you can redistribute it and/or modify */
/* it under the terms of the GNU General Public License as published by */
/* the Free Software Foundation; either version 2 of the License, or */
/* (at your option) any later version. */
/* */
/* This program is distributed in the hope that it will be useful, */
/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See */
/* the GNU General Public License for more details. */
/* */
/* You should have received a copy of the GNU General Public License */
/* along with this program; if not, write to the Free Software */
/* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
/* */
/******************************************************************************/
/*
* tomoyo_file_test.c
*
* Testing program for security/tomoyo/
*
* Copyright (C) 2005-2010 NTT DATA CORPORATION
*/
#include "include.h"
static int should_fail = 0;
static void show_prompt(const char *str)
{
printf("Testing %35s: (%s) ", str,
should_fail ? "must fail" : "should success");
errno = 0;
}
static void show_result(int result)
{
if (should_fail) {
if (result == EOF) {
if (errno == EPERM)
printf("OK: Permission denied.\n");
else
printf("FAILED: %s\n", strerror(errno));
} else {
printf("BUG!\n");
}
} else {
if (result != EOF)
printf("OK\n");
else
printf("%s\n", strerror(errno));
}
}
static const char *dev_null_path = "/dev/null";
static const char *truncate_path = "/tmp/truncate_test";
static const char *ftruncate_path = "/tmp/ftruncate_test";
static const char *open_creat_path = "/tmp/open_test";
static const char *mknod_reg_path = "/tmp/mknod_reg_test";
static const char *mknod_chr_path = "/tmp/mknod_chr_test";
static const char *mknod_blk_path = "/tmp/mknod_blk_test";
static const char *mknod_fifo_path = "/tmp/mknod_fifo_test";
static const char *mknod_sock_path = "/tmp/mknod_sock_test";
static const char *unlink_path = "/tmp/unlink_test";
static const char *mkdir_path = "/tmp/mkdir_test";
static const char *rmdir_path = "/tmp/rmdir_test";
static const char *link_source_path = "/tmp/link_source_test";
static const char *link_dest_path = "/tmp/link_dest_test";
static const char *symlink_source_path = "/tmp/symlink_source_test";
static const char *symlink_dest_path = "/tmp/symlink_dest_test";
static const char *rename_source_path = "/tmp/rename_source_test";
static const char *rename_dest_path = "/tmp/rename_dest_test";
static const char *socket_path = "/tmp/socket_test";
static int ftruncate_fd = EOF;
static void stage_file_test(void)
{
int fd;
{
const char buffer[] = "32768 61000";
show_prompt("sysctl(READ)");
show_result(read_sysctl(TEST_SYSCTL_PATH, NULL, 0));
show_prompt("sysctl(WRITE)");
show_result(write_sysctl(TEST_SYSCTL_PATH, buffer));
}
/* QUESTION: Is there a file which can be passed to uselib()? */
show_prompt("uselib()");
show_result(uselib("/bin/true"));
{
int pipe_fd[2] = { EOF, EOF };
int error = 0;
fflush(stdout);
fflush(stderr);
if (pipe(pipe_fd) == -1)
err(1, "pipe");
if (fork() == 0) {
execl("/bin/true", "/bin/true", NULL);
if (write(pipe_fd[1], &errno, sizeof(errno)) == -1)
err(1, "write");
_exit(0);
}
close(pipe_fd[1]);
(void)read(pipe_fd[0], &error, sizeof(error));
show_prompt("execve()");
errno = error;
show_result(error ? EOF : 0);
}
show_prompt("open(O_RDONLY)");
fd = open(dev_null_path, O_RDONLY);
show_result(fd);
if (fd != EOF)
close(fd);
show_prompt("open(O_WRONLY)");
fd = open(dev_null_path, O_WRONLY);
show_result(fd);
if (fd != EOF)
close(fd);
show_prompt("open(O_RDWR)");
fd = open(dev_null_path, O_RDWR);
show_result(fd);
if (fd != EOF)
close(fd);
show_prompt("open(O_CREAT | O_EXCL)");
fd = open(open_creat_path, O_CREAT | O_EXCL, 0666);
show_result(fd);
if (fd != EOF)
close(fd);
show_prompt("open(O_TRUNC)");
fd = open(truncate_path, O_TRUNC);
show_result(fd);
if (fd != EOF)
close(fd);
show_prompt("truncate()");
show_result(truncate(truncate_path, 0));
show_prompt("ftruncate()");
show_result(ftruncate(ftruncate_fd, 0));
show_prompt("mknod(S_IFREG)");
show_result(mknod(mknod_reg_path, S_IFREG, 0));
show_prompt("mknod(S_IFCHR)");
show_result(mknod(mknod_chr_path, S_IFCHR, MKDEV(1, 3)));
show_prompt("mknod(S_IFBLK)");
show_result(mknod(mknod_blk_path, S_IFBLK, MKDEV(1, 0)));
show_prompt("mknod(S_IFIFO)");
show_result(mknod(mknod_fifo_path, S_IFIFO, 0));
show_prompt("mknod(S_IFSOCK)");
show_result(mknod(mknod_sock_path, S_IFSOCK, 0));
show_prompt("mkdir()");
show_result(mkdir(mkdir_path, 0600));
show_prompt("rmdir()");
show_result(rmdir(rmdir_path));
show_prompt("unlink()");
show_result(unlink(unlink_path));
show_prompt("symlink()");
show_result(symlink(symlink_dest_path, symlink_source_path));
show_prompt("link()");
show_result(link(link_source_path, link_dest_path));
show_prompt("rename()");
show_result(rename(rename_source_path, rename_dest_path));
{
struct sockaddr_un addr;
int fd;
memset(&addr, 0, sizeof(addr));
addr.sun_family = AF_UNIX;
strncpy(addr.sun_path, socket_path, sizeof(addr.sun_path) - 1);
fd = socket(AF_UNIX, SOCK_STREAM, 0);
show_prompt("unix_bind()");
show_result(bind(fd, (struct sockaddr *)&addr, sizeof(addr)));
if (fd != EOF)
close(fd);
}
printf("\n\n");
}
static void create_files(void)
{
mkdir(rmdir_path, 0700);
close(creat(link_source_path, 0600));
close(creat(rename_source_path, 0600));
close(creat(truncate_path, 0600));
close(creat(unlink_path, 0600));
ftruncate_fd = open(ftruncate_path, O_WRONLY | O_CREAT, 0600);
}
static void creanup_files(void)
{
if (ftruncate_fd != EOF)
close(ftruncate_fd);
ftruncate_fd = EOF;
unlink(open_creat_path);
unlink(mknod_reg_path);
unlink(mknod_chr_path);
unlink(mknod_blk_path);
unlink(mknod_fifo_path);
unlink(mknod_sock_path);
rmdir(mkdir_path);
unlink(symlink_source_path);
unlink(symlink_dest_path);
unlink(link_source_path);
unlink(link_dest_path);
unlink(rename_source_path);
unlink(rename_dest_path);
unlink(truncate_path);
unlink(ftruncate_path);
unlink(socket_path);
}
static void set_file_enforce(int enforce)
{
if (enforce) {
set_profile(3, "file::execute");
set_profile(3, "file::open");
set_profile(3, "file::create");
set_profile(3, "file::unlink");
set_profile(3, "file::mkdir");
set_profile(3, "file::rmdir");
set_profile(3, "file::mkfifo");
set_profile(3, "file::mksock");
set_profile(3, "file::truncate");
set_profile(3, "file::symlink");
set_profile(3, "file::rewrite");
set_profile(3, "file::mkblock");
set_profile(3, "file::mkchar");
set_profile(3, "file::link");
set_profile(3, "file::rename");
set_profile(3, "file::chmod");
set_profile(3, "file::chown");
set_profile(3, "file::chgrp");
set_profile(3, "file::ioctl");
set_profile(3, "file::chroot");
set_profile(3, "file::mount");
set_profile(3, "file::umount");
set_profile(3, "file::pivot_root");
} else {
set_profile(0, "file::execute");
set_profile(0, "file::open");
set_profile(0, "file::create");
set_profile(0, "file::unlink");
set_profile(0, "file::mkdir");
set_profile(0, "file::rmdir");
set_profile(0, "file::mkfifo");
set_profile(0, "file::mksock");
set_profile(0, "file::truncate");
set_profile(0, "file::symlink");
set_profile(0, "file::rewrite");
set_profile(0, "file::mkblock");
set_profile(0, "file::mkchar");
set_profile(0, "file::link");
set_profile(0, "file::rename");
set_profile(0, "file::chmod");
set_profile(0, "file::chown");
set_profile(0, "file::chgrp");
set_profile(0, "file::ioctl");
set_profile(0, "file::chroot");
set_profile(0, "file::mount");
set_profile(0, "file::umount");
set_profile(0, "file::pivot_root");
}
}
int main(int argc, char *argv[])
{
tomoyo_test_init();
printf("***** Testing file hooks in enforce mode. *****\n");
create_files();
should_fail = 1;
set_file_enforce(1);
stage_file_test();
set_file_enforce(0);
clear_status();
creanup_files();
printf("***** Testing file hooks in permissive mode. *****\n");
should_fail = 0;
create_files();
set_file_enforce(0);
stage_file_test();
creanup_files();
clear_status();
return 0;
}