SSLproxy/sys.t.c
Daniel Roethlisberger c01ace1261 Introduce privilege separation architecture
Fork into a monitor parent process and an actual proxy child process,
communicating over AF_UNIX sockets.  Certain privileged operations are
performed through the privileged parent process, like opening log files
or listener sockets, while all other operations happen in the child
process, which can now drop its privileges without side-effects for
log file opening and other privileged operations.  This is also a
preparation for -l/-L logfile reopening through SIGUSR1.

This means that -S and -F are no longer relative to chroot() if used
with -j.  This is a deliberate POLA violation.
2014-11-24 22:14:09 +01:00

253 lines
5.7 KiB
C

/*
* SSLsplit - transparent and scalable SSL/TLS interception
* Copyright (c) 2009-2014, Daniel Roethlisberger <daniel@roe.ch>
* All rights reserved.
* http://www.roe.ch/SSLsplit
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "sys.h"
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <pthread.h>
#include <check.h>
#define TARGETDIR "extra/pki/targets"
static char template[] = "/tmp/" BNAME ".test.XXXXXX";
static char *basedir;
static char *file, *lfile, *dir, *ldir, *notexist;
static void
sys_isdir_setup(void)
{
basedir = strdup(template);
if (!mkdtemp(basedir)) {
perror("mkdtemp");
exit(EXIT_FAILURE);
}
asprintf(&file, "%s/file", basedir);
asprintf(&lfile, "%s/lfile", basedir);
asprintf(&dir, "%s/dir", basedir);
asprintf(&ldir, "%s/ldir", basedir);
asprintf(&notexist, "%s/DOES_NOT_EXIST", basedir);
if (!file || !lfile || !dir || !ldir || !notexist) {
perror("asprintf");
exit(EXIT_FAILURE);
}
close(open(file, O_CREAT|O_WRONLY|O_APPEND, 0600));
symlink(file, lfile);
mkdir(dir, 0700);
symlink(dir, ldir);
}
static void
sys_isdir_teardown(void)
{
unlink(lfile);
unlink(file);
unlink(ldir);
rmdir(dir);
rmdir(basedir);
free(lfile);
free(file);
free(ldir);
free(dir);
free(notexist);
}
START_TEST(sys_isdir_01)
{
fail_unless(sys_isdir(dir), "Directory !isdir");
}
END_TEST
START_TEST(sys_isdir_02)
{
fail_unless(sys_isdir(ldir), "Symlink dir !isdir");
}
END_TEST
START_TEST(sys_isdir_03)
{
fail_unless(!sys_isdir(notexist), "Not-exist isdir");
}
END_TEST
START_TEST(sys_isdir_04)
{
fail_unless(!sys_isdir(file), "File isdir");
}
END_TEST
START_TEST(sys_isdir_05)
{
fail_unless(!sys_isdir(lfile), "Symlink file isdir");
}
END_TEST
static void
sys_mkpath_setup(void)
{
basedir = strdup(template);
if (!mkdtemp(basedir)) {
perror("mkdtemp");
exit(EXIT_FAILURE);
}
}
static void
sys_mkpath_teardown(void)
{
char *cmd;
asprintf(&cmd, "rm -r '%s'", basedir);
if (cmd) {
system(cmd);
}
}
START_TEST(sys_mkpath_01)
{
char *dir;
asprintf(&dir, "%s/a/bb/ccc/dddd/eeeee/ffffff/ggggggg/hhhhhhhh",
basedir);
fail_unless(!!dir, "asprintf failed");
fail_unless(!sys_isdir(dir), "dir already sys_isdir()");
fail_unless(!sys_mkpath(dir, 0777), "sys_mkpath failed");
fail_unless(sys_isdir(dir), "dir not sys_isdir()");
free(dir);
}
END_TEST
void
sys_dir_eachfile_cb(UNUSED const char *fn, void *arg)
{
*((int*)arg) += 1;
/* fprintf(stderr, "%s\n", fn); */
}
START_TEST(sys_dir_eachfile_01)
{
int flag = 0;
sys_dir_eachfile(TARGETDIR, sys_dir_eachfile_cb, &flag);
fail_unless(flag == 2, "Iterated wrong number of files");
}
END_TEST
START_TEST(sys_get_cpu_cores_01)
{
fail_unless(sys_get_cpu_cores() >= 1, "Number of CPU cores < 1");
}
END_TEST
void *
thrmain(void *arg)
{
*((int*)arg) = 1;
return (void*) 2;
}
START_TEST(pthread_create_01)
{
pthread_t tid;
int x = 0;
void *rv;
fail_unless(!pthread_create(&tid, NULL, thrmain, &x),
"Cannot create thread");
fail_unless(!pthread_join(tid, &rv), "Cannot join thread");
fail_unless(x == 1, "Thread failed to update x");
fail_unless(rv == (void*) 2, "Thread return value mismatch");
}
END_TEST
START_TEST(sys_user_str_01)
{
char *name = sys_user_str(0);
fail_unless(!strcmp(name, TEST_ZEROUSR), "User 0 name mismatch");
}
END_TEST
START_TEST(sys_group_str_01)
{
char *name = sys_group_str(0);
fail_unless(!strcmp(name, TEST_ZEROGRP), "Group 0 name mismatch");
}
END_TEST
Suite *
sys_suite(void)
{
Suite *s;
TCase *tc;
s = suite_create("sys");
tc = tcase_create("sys_isdir");
tcase_add_unchecked_fixture(tc, sys_isdir_setup, sys_isdir_teardown);
tcase_add_test(tc, sys_isdir_01);
tcase_add_test(tc, sys_isdir_02);
tcase_add_test(tc, sys_isdir_03);
tcase_add_test(tc, sys_isdir_04);
tcase_add_test(tc, sys_isdir_05);
suite_add_tcase(s, tc);
tc = tcase_create("sys_mkpath");
tcase_add_unchecked_fixture(tc, sys_mkpath_setup, sys_mkpath_teardown);
tcase_add_test(tc, sys_mkpath_01);
suite_add_tcase(s, tc);
tc = tcase_create("sys_dir_eachfile");
tcase_add_test(tc, sys_dir_eachfile_01);
suite_add_tcase(s, tc);
tc = tcase_create("sys_get_cpu_cores");
tcase_add_test(tc, sys_get_cpu_cores_01);
suite_add_tcase(s, tc);
tc = tcase_create("pthread_create");
tcase_add_test(tc, pthread_create_01);
suite_add_tcase(s, tc);
tc = tcase_create("sys_user_str");
tcase_add_test(tc, sys_user_str_01);
suite_add_tcase(s, tc);
tc = tcase_create("sys_group_str");
tcase_add_test(tc, sys_group_str_01);
suite_add_tcase(s, tc);
return s;
}
/* vim: set noet ft=c: */