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common.h
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common.h
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/*
Copyright (C) 2019-Present SKALE Labs
This file is part of sgxwallet.
sgxwallet is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
sgxwallet 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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with sgxwallet. If not, see <https://www.gnu.org/licenses/>.
@file common.h
@author Stan Kladko
@date 2020
*/
#ifndef SGXWALLET_COMMON_H
#define SGXWALLET_COMMON_H
using namespace std;
#include <atomic>
#include <boost/throw_exception.hpp>
#include <condition_variable>
#include <functional>
#include <gmp.h>
#include <iostream>
#include <json/value.h>
#include <map>
#include <memory>
#include <mutex>
#include <stdlib.h>
#include <string.h>
#include <sys/sysinfo.h>
#include <sys/types.h>
#include <thread>
#include <vector>
#include "InvalidStateException.h"
#include "SGXException.h"
#include "secure_enclave/Verify.h"
#define SAFE_FREE(__POINTER__) \
{ \
if (__POINTER__) { \
free(__POINTER__); \
__POINTER__ = NULL; \
} \
}
inline std::string className(const std::string &prettyFunction) {
size_t colons = prettyFunction.find("::");
if (colons == std::string::npos)
return "::";
size_t begin = prettyFunction.substr(0, colons).rfind(" ") + 1;
size_t end = colons - begin;
return prettyFunction.substr(begin, end);
}
#define __CLASS_NAME__ className(__PRETTY_FUNCTION__)
#include <execinfo.h>
inline void print_stack(int _line) {
void *array[10];
size_t size;
// get void*'s for all entries on the stack
size = backtrace(array, 10);
// print out all the frames to stderr
fprintf(stderr, "Backtrace on line %d: \n", _line);
backtrace_symbols_fd(array, size, STDERR_FILENO);
}
inline int parseLine(char *line) {
// This assumes that a digit will be found and the line ends in " Kb".
int i = strlen(line);
const char *p = line;
while (*p < '0' || *p > '9')
p++;
line[i - 3] = '\0';
i = atoi(p);
return i;
}
inline int getValue() { // Note: this value is in KB!
FILE *file = fopen("/proc/self/status", "r");
int result = -1;
char line[128];
while (fgets(line, 128, file) != NULL) {
if (strncmp(line, "VmRSS:", 6) == 0) {
result = parseLine(line);
break;
}
}
fclose(file);
return result;
}
#define CHECK_STATE(_EXPRESSION_) \
if (!(_EXPRESSION_)) { \
auto __msg__ = std::string("State check failed::") + #_EXPRESSION_ + " " + \
std::string(__FILE__) + ":" + std::to_string(__LINE__); \
\
BOOST_THROW_EXCEPTION( \
SGXException(-100, string(__CLASS_NAME__) + ":" + __msg__)); \
}
#define CHECK_STATE2(_EXPRESSION_, __STATUS__) \
if (!(_EXPRESSION_)) { \
auto __msg__ = std::string("State check failed::") + #_EXPRESSION_ + " " + \
std::string(__FILE__) + ":" + std::to_string(__LINE__); \
\
BOOST_THROW_EXCEPTION( \
SGXException(__STATUS__, string(__CLASS_NAME__) + ":" + __msg__)); \
}
#define HANDLE_TRUSTED_FUNCTION_ERROR(__STATUS__, __ERR_STATUS__, __ERR_MSG__) \
if (__STATUS__ != SGX_SUCCESS) { \
string __ERR_STRING__ = string("SGX enclave call to ") + __FUNCTION__ + \
" failed with status:" + to_string(__STATUS__) + \
" Err message:" + __ERR_MSG__; \
BOOST_THROW_EXCEPTION(SGXException(-102, string(__ERR_STRING__))); \
} \
\
if (__ERR_STATUS__ != 0) { \
string __ERR_STRING__ = \
string("SGX enclave call to ") + __FUNCTION__ + \
" failed with errStatus:" + to_string(__ERR_STATUS__) + \
" Err message:" + __ERR_MSG__; \
BOOST_THROW_EXCEPTION(runtime_error(__ERR_STRING__)); \
}
#define SAFE_CHAR_BUF(__X__, __Y__) \
; \
char __X__[__Y__]; \
memset(__X__, 0, __Y__);
#define SAFE_UINT8_BUF(__X__, __Y__) \
; \
uint8_t __X__[__Y__]; \
memset(__X__, 0, __Y__);
// Copy from libconsensus
inline string exec(const char *cmd) {
CHECK_STATE(cmd);
std::array<char, 128> buffer;
std::string result;
std::unique_ptr<FILE, decltype(&pclose)> pipe(popen(cmd, "r"), pclose);
if (!pipe) {
BOOST_THROW_EXCEPTION(std::runtime_error("popen() failed!"));
}
while (fgets(buffer.data(), buffer.size(), pipe.get()) != nullptr) {
result += buffer.data();
}
return result;
}
#include <shared_mutex>
extern std::shared_timed_mutex sgxInitMutex;
extern uint64_t initTime;
#define LOCK(__X__) std::lock_guard<std::recursive_mutex> __LOCK__(__X__);
#define READ_LOCK(__X__) \
std::shared_lock<std::shared_timed_mutex> __LOCK__(__X__);
#define WRITE_LOCK(__X__) \
std::unique_lock<std::shared_timed_mutex> __LOCK__(__X__);
#endif // SGXWALLET_COMMON_H