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/* Include file for high-level encryption routines.
*
* (C) 2003-2024 Anope Team
* Contact us at team@anope.org
*
* Please read COPYING and README for further details.
*
* Based on the original code of Epona by Lara.
* Based on the original code of Services by Andy Church.
*/
#include "module.h"
#include "modules/encryption.h"
class EOld final
: public Module
{
private:
ServiceReference<Encryption::Provider> md5;
Anope::string EncryptInternal(const Anope::string &src)
{
if (!md5)
return {};
char digest[32];
memset(digest, 0, sizeof(digest));
auto hash = md5->Encrypt(src);
if (hash.length() != sizeof(digest))
return {}; // Probably a bug?
memcpy(digest, hash.data(), hash.length());
char digest2[16];
for (size_t i = 0; i < sizeof(digest); i += 2)
digest2[i / 2] = XTOI(digest[i]) << 4 | XTOI(digest[i + 1]);
return Anope::Hex(digest2, sizeof(digest2));
}
inline static char XTOI(char c)
{
return c > 9 ? c - 'A' + 10 : c - '0';
}
public:
EOld(const Anope::string &modname, const Anope::string &creator)
: Module(modname, creator, ENCRYPTION | VENDOR)
, md5("Encryption::Provider", "md5")
{
if (ModuleManager::FindFirstOf(ENCRYPTION) == this)
throw ModuleException("enc_old is deprecated and can not be used as a primary encryption method");
ModuleManager::LoadModule("enc_md5", User::Find(creator, true));
if (!md5)
throw ModuleException("Unable to find md5 reference");
}
void OnCheckAuthentication(User *, IdentifyRequest *req) override
{
const auto *na = NickAlias::Find(req->GetAccount());
if (!na)
return;
NickCore *nc = na->nc;
size_t 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("oldmd5"))
return;
auto enc = EncryptInternal(req->GetPassword());
if (!enc.empty() && 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(EOld)
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