ClickHouse/src/Common/OpenSSLHelpers.cpp

#include <Common/config.h>

#if USE_SSL
#include "OpenSSLHelpers.h"
#include <base/scope_guard.h>
#include <openssl/err.h>
#include <openssl/sha.h>

namespace DB
{
#pragma GCC diagnostic warning "-Wold-style-cast"

std::string encodeSHA256(const std::string_view & text)
{
    return encodeSHA256(text.data(), text.size());
}
std::string encodeSHA256(const void * text, size_t size)
{
    std::string out;
    out.resize(32);
    encodeSHA256(text, size, reinterpret_cast<unsigned char *>(out.data()));
    return out;
}
void encodeSHA256(const std::string_view & text, unsigned char * out)
{
    encodeSHA256(text.data(), text.size(), out);
}
void encodeSHA256(const void * text, size_t size, unsigned char * out)
{
    SHA256_CTX ctx;
    SHA256_Init(&ctx);
    SHA256_Update(&ctx, reinterpret_cast<const UInt8 *>(text), size);
    SHA256_Final(out, &ctx);
}

String getOpenSSLErrors()
{
    String res;
    ERR_print_errors_cb([](const char * str, size_t len, void * ctx)
    {
        String & out = *reinterpret_cast<String*>(ctx);
        if (!out.empty())
            out += ", ";
        out.append(str, len);
        return 1;
    }, &res);
    return res;
}

}
#endif