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/* Module for encryption using MD5.
*
* Modified for Anope.
* (C) 2003-2024 Anope Team
* Contact us at team@anope.org
*
* Taken from IRC Services and is copyright (c) 1996-2002 Andrew Church.
* Email: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file COPYING for
* details.
*/
#include "module.h"
#include "modules/encryption.h"
#include "md5/md5.c"
class MD5Context final
: public Encryption::Context
{
private:
MD5_CTX context;
public:
MD5Context()
{
MD5_Init(&context);
}
void Update(const unsigned char *input, size_t len) override
{
MD5_Update(&context, input, len);
}
Anope::string Finalize() override
{
unsigned char digest[16];
MD5_Final(digest, &context);
return Anope::string(reinterpret_cast<const char *>(&digest), sizeof(digest));
}
};
class EMD5 final
: public Module
{
private:
Encryption::SimpleProvider<MD5Context> md5provider;
public:
EMD5(const Anope::string &modname, const Anope::string &creator)
: Module(modname, creator, ENCRYPTION | VENDOR)
, md5provider(this, "md5", 16, 64)
{
if (ModuleManager::FindFirstOf(ENCRYPTION) == this)
throw ModuleException("enc_md5 is deprecated and can not be used as a primary encryption method");
md5provider.Check({
{ "d41d8cd98f00b204e9800998ecf8427e", "" },
{ "9e107d9d372bb6826bd81d3542a419d6", "The quick brown fox jumps over the lazy dog" },
});
}
void OnCheckAuthentication(User *, IdentifyRequest *req) override
{
const auto *na = NickAlias::Find(req->GetAccount());
if (!na)
return;
NickCore *nc = na->nc;
auto pos = nc->pass.find(':');
if (pos == Anope::string::npos)
return;
Anope::string hash_method(nc->pass.begin(), nc->pass.begin() + pos);
if (!hash_method.equals_cs("md5"))
return;
auto enc = "md5:" + Anope::Hex(md5provider.Encrypt(req->GetPassword()));
if (nc->pass.equals_cs(enc))
{
// If we are NOT the first encryption module we want to re-encrypt
// the password with the primary encryption method.
if (ModuleManager::FindFirstOf(ENCRYPTION) != this)
Anope::Encrypt(req->GetPassword(), nc->pass);
req->Success(this);
}
}
};
MODULE_INIT(EMD5)
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