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refactored system tests

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This commit is contained in:
Steffen Vogel 2015-09-17 00:55:20 +02:00
parent dc73fbecb0
commit 7b49fd75e3
8 changed files with 207 additions and 73 deletions
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4
server/Makefile
View file

@ -3,7 +3,7 @@ TARGETS = server send random receive test
# Common objs
OBJS = path.o node.o hooks.o msg.o cfg.o stats.o
# Helper libs
OBJS += utils.o list.o hist.o log.o timing.o
OBJS += utils.o list.o hist.o log.o timing.o checks.o
# Node types
OBJS += file.o
@ -66,7 +66,7 @@ receive: receive.o $(OBJS)
test: test.o $(OBJS)
random: random.o msg.o utils.o timing.o log.o
protected: CFLAGS += -DPROTECT -DVALID_UNTIL=$(shell date -d "now +5months" +%s) -s -O3 -fvisibility=hidden
protected: CFLAGS += -DLICENSE -DLICENSE_VALID=$(shell date -d "now +5months" +%s) -s -O3 -fvisibility=hidden
protected: clean strip
strip: $(TARGETS)

58
server/include/checks.h Normal file
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@ -0,0 +1,58 @@
/** Check system requirements.
*
* @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
* @copyright 2014-2015, Institute for Automation of Complex Power Systems, EONERC
* This file is part of S2SS. All Rights Reserved. Proprietary and confidential.
* Unauthorized copying of this file, via any medium is strictly prohibited.
*********************************************************************************/
#ifndef _CHECKS_H_
#define _CHECKS_H_
/** Checks for realtime (RT_PREEMPT) patched kernel.
*
* See https://rt.wiki.kernel.org
*
* @retval 0 Kernel is patched.
* @reval <>0 Kernel is not patched.
*/
int check_kernel_rtpreempt();
/** Check if kernel command line contains "isolcpus=" option.
*
* See https://www.kernel.org/doc/Documentation/kernel-parameters.txt
*
* @retval 0 Kernel has isolated cores.
* @reval <>0 Kernel has no isolated cores.
*/
int check_kernel_cmdline();
/** Check if kernel is version is sufficient
*
* @retval 0 Kernel version is sufficient.
* @reval <>0 Kernel version is not sufficient.
*/
int check_kernel_version();
/** Check if program is running with super user (root) privileges.
*
*
* @retval 0 Permissions are sufficient.
* @reval <>0 Permissions are not sufficient.
*/
int check_root();
/** Simple copy protection.
*
* This function checks several machine IDs for predefined values.
*
* @retval 0 The machine is allowed to run this program.
* @reval <>0 The machine is not allowed to run this program.
*/
int check_license_ids();
int check_license_time();
int check_license_trace();
#endif

10
server/include/config.h
View file

@ -36,6 +36,16 @@
#define IPPROTO_S2SS 137
#define ETH_P_S2SS 0xBABE
/* Checks */
#define KERNEL_VERSION_MAJ 3
#define KERNEL_VERSION_MIN 4
#define LICENSE_CHECKS \
{ { "/sys/class/dmi/id/product_uuid", "5002E503-4904-EB05-7406-0C0700080009" }, \
{ "/sys/class/net/eth0/address" , "50:e5:49:eb:74:0c" }, \
{ "/etc/machine-id", "0d8399d0216314f083b9ed2053a354a8" }, \
{ "/dev/sda2", "\x53\xf6\xb5\xeb\x8b\x16\x46\xdc\x8d\x8f\x5b\x70\xb8\xc9\x1a\x2a", 0x468 } }
/* Hook function configuration */
#define HOOK_FIR_INDEX 1 /**< The first value of message should be filtered. */
#define HOOK_TS_INDEX -1 /**< The last value of message should be overwritten by a timestamp. */

64
server/include/license.h
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@ -1,64 +0,0 @@
/** Simple copy protection
*
* @file
* @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
* @copyright 2014-2015, Institute for Automation of Complex Power Systems, EONERC
* This file is part of S2SS. All Rights Reserved. Proprietary and confidential.
* Unauthorized copying of this file, via any medium is strictly prohibited.
*********************************************************************************/
#ifdef PROTECT
#include <stdio.h>
#include <string.h>
#include <time.h>
#include <sys/ptrace.h>
/** Simple copy protection.
*
* This function does:
* - checks several machine IDs for predefined values.
* - checks if program is debugged / traced
*
* This function shall be executed during program startup to
* check if this host is allowed to execute S2SS.
*/
static inline __attribute__((always_inline)) int check_license()
{
const struct {
char *file, *content;
off_t offset;
} checks[] = {
{ "/sys/class/dmi/id/product_uuid", "5002E503-4904-EB05-7406-0C0700080009" },
{ "/sys/class/net/eth0/address" , "50:e5:49:eb:74:0c" },
{ "/etc/machine-id", "0d8399d0216314f083b9ed2053a354a8" },
{ "/dev/sda2", "\x53\xf6\xb5\xeb\x8b\x16\x46\xdc\x8d\x8f\x5b\x70\xb8\xc9\x1a\x2a", 0x468 }, /* EXT4 UUID */
};
if (ptrace(PTRACE_TRACEME, 0, 0, 0) < 0)
return -1;
if (time(NULL) > VALID_UNTIL)
return -1;
FILE *f;
char buf[128];
for (int i = 0; i < ARRAY_LEN(checks); i++) {
f = fopen(checks[i].file, "r");
if (!f)
return -1;
fseek(f, checks[i].offset, SEEK_SET);
fgets(buf, sizeof(buf), f);
fclose(f);
if (strncmp(buf, checks[i].content, strlen(checks[i].content)))
return -1;
}
return 0;
}
#else
#define check_license() (0)
#endif

12
server/include/utils.h
View file

@ -114,6 +114,18 @@ int system2(const char* cmd, ...);
/** Call quit() in the main thread. */
void die();
/** Used by version_parse(), version_compare() */
struct version {
int major;
int minor;
};
/** Compare two versions. */
int version_compare(struct version *a, struct version *b);
/** Parse a dotted version string. */
int version_parse(const char *s, struct version *v);
/** Check assertion and exit if failed. */
#define assert(exp) do { \
if (!EXPECT(exp, 0)) \

96
server/src/checks.c Normal file
View file

@ -0,0 +1,96 @@
/** Check system requirements.
*
* @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
* @copyright 2014-2015, Institute for Automation of Complex Power Systems, EONERC
* This file is part of S2SS. All Rights Reserved. Proprietary and confidential.
* Unauthorized copying of this file, via any medium is strictly prohibited.
*********************************************************************************/
#include <stdio.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/ptrace.h>
#include <sys/types.h>
#include <sys/utsname.h>
#include "utils.h"
#include "config.h"
int check_kernel_version()
{
struct utsname uts;
struct version current;
struct version required = { KERNEL_VERSION_MAJ, KERNEL_VERSION_MIN };
if (uname(&uts) < 0)
return -1;
if (version_parse(uts.release, &current))
return -1;
return version_compare(&current, &required) < 0;
}
int check_kernel_rtpreempt()
{
return access("/sys/kernel/realtime", R_OK);
}
int check_kernel_cmdline()
{
char cmd[512];
FILE *f = fopen("/proc/cmdline", "r");
if (!f)
return -1;
if (!fgets(cmd, sizeof(cmd), f))
return -1;
return strstr(cmd, "isolcpus=") ? 0 : -1;
}
int check_root()
{
return getuid();
}
int check_license_time()
{
return time(NULL) > LICENSE_VALID;
}
int check_license_trace()
{
return ptrace(PTRACE_TRACEME, 0, 0, 0) < 0;
}
int check_license_ids()
{
const struct {
char *file, *content;
off_t offset;
} checks[] = LICENSE_CHECKS;
FILE *f;
char buf[128];
for (int i = 0; i < ARRAY_LEN(checks); i++) {
f = fopen(checks[i].file, "r");
if (!f)
return -1;
fseek(f, checks[i].offset, SEEK_SET);
fgets(buf, sizeof(buf), f);
fclose(f);
if (strncmp(buf, checks[i].content, strlen(checks[i].content)))
return -1;
}
return 0;
}

24
server/src/server.c
View file

@ -6,7 +6,6 @@
* Unauthorized copying of this file, via any medium is strictly prohibited.
*********************************************************************************/
#include <stdlib.h>
#include <string.h>
@ -21,7 +20,7 @@
#include "path.h"
#include "node.h"
#include "stats.h"
#include "license.h"
#include "checks.h"
#ifdef ENABLE_OPAL_ASYNC
#include "opal.h"
@ -142,12 +141,23 @@ int main(int argc, char *argv[])
info("This is Simulator2Simulator Server (S2SS) %s (built on %s, %s)",
BLD(YEL(VERSION)), BLD(MAG(__DATE__)), BLD(MAG(__TIME__)));
/* Check priviledges */
if (getuid() != 0)
/* Checks system requirements*/
if (check_root())
error("The server requires superuser privileges!");
if (check_license())
error("You're not allowed to use this software!");
#ifdef LICENSE
if (check_license_trace())
error("This software should not be traced!");
if (check_license_time())
error("Your license expired");
if (check_license_ids())
error("This version is compiled for a different machine!");
#endif
if (check_kernel_version())
error("Your kernel version is to old: required >= %u.%u", KERNEL_VERSION_MAJ, KERNEL_VERSION_MIN);
if (check_kernel_cmdline())
warn("You should reserve some cores for the server (see 'isolcpus')");
if (check_kernel_rtpreempt())
warn("We recommend to use an RT_PREEMPT patched kernel!");
/* Initialize lists */
list_init(&nodes, (dtor_cb_t) node_destroy);

12
server/src/utils.c
View file

@ -19,6 +19,18 @@
#include "cfg.h"
#include "utils.h"
int version_parse(const char *s, struct version *v)
{
return sscanf(s, "%u.%u", &v->major, &v->minor) != 2;
}
int version_compare(struct version *a, struct version *b) {
int major = a->major - b->major;
int minor = a->minor - b->minor;
return major ? major : minor;
}
double box_muller(float m, float s)
{
double x1, x2, y1;