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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2021 Dominic Hamon
* Copyright (C) 2018-2024 Sadie Powell <sadie@witchery.services>
* Copyright (C) 2014 Daniel Vassdal <shutter@canternet.org>
*
* This file is part of InspIRCd. InspIRCd is free software: you can
* redistribute it and/or modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation, version 2.
*
* This program 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 General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "inspircd.h"
#include "modules/hash.h"
#include <bcrypt/crypt_blowfish.c>
class BCryptProvider final
: public HashProvider
{
private:
std::string Salt()
{
char entropy[16];
ServerInstance->GenRandom(entropy, std::size(entropy));
char salt[32];
if (!_crypt_gensalt_blowfish_rn("$2a$", rounds, entropy, sizeof(entropy), salt, sizeof(salt)))
throw ModuleException(creator, "Could not generate salt - this should never happen");
return salt;
}
public:
unsigned long rounds = 10;
static std::string Generate(const std::string& data, const std::string& salt)
{
char hash[64];
_crypt_blowfish_rn(data.c_str(), salt.c_str(), hash, sizeof(hash));
return hash;
}
std::string GenerateRaw(const std::string& data) override
{
return Generate(data, Salt());
}
bool Compare(const std::string& input, const std::string& hash) override
{
return InspIRCd::TimingSafeCompare(Generate(input, hash), hash);
}
std::string ToPrintable(const std::string& raw) override
{
return raw;
}
BCryptProvider(Module* parent)
: HashProvider(parent, "bcrypt", 60)
{
}
};
class ModuleBCrypt final
: public Module
{
private:
BCryptProvider bcrypt;
public:
ModuleBCrypt()
: Module(VF_VENDOR, "Allows other modules to generate bcrypt hashes.")
, bcrypt(this)
{
}
void ReadConfig(ConfigStatus& status) override
{
const auto& conf = ServerInstance->Config->ConfValue("bcrypt");
bcrypt.rounds = conf->getNum<unsigned long>("rounds", 10, 1);
}
};
MODULE_INIT(ModuleBCrypt)
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