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#pragma once
#include "logging.hpp"
extern "C"
{
#include <openssl/rand.h>
}
#include <limits>
#include <string>
namespace bmcweb
{
struct OpenSSLGenerator
{
uint8_t operator()()
{
uint8_t index = 0;
int rc = RAND_bytes(&index, sizeof(index));
if (rc != opensslSuccess)
{
BMCWEB_LOG_ERROR("Cannot get random number");
err = true;
}
return index;
}
static constexpr uint8_t max()
{
return std::numeric_limits<uint8_t>::max();
}
static constexpr uint8_t min()
{
return std::numeric_limits<uint8_t>::min();
}
bool error() const
{
return err;
}
// all generators require this variable
using result_type = uint8_t;
private:
// RAND_bytes() returns 1 on success, 0 otherwise. -1 if bad function
static constexpr int opensslSuccess = 1;
bool err = false;
};
std::string getRandomUUID();
} // namespace bmcweb
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