diff options
Diffstat (limited to 'modules/encryption/old.cpp')
| -rw-r--r-- | modules/encryption/old.cpp | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/modules/encryption/old.cpp b/modules/encryption/old.cpp new file mode 100644 index 000000000..df0e61819 --- /dev/null +++ b/modules/encryption/old.cpp @@ -0,0 +1,134 @@ +/* + * Anope IRC Services + * + * Copyright (C) 2003-2017 Anope Team <team@anope.org> + * + * This file is part of Anope. Anope 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 see <http://www.gnu.org/licenses/>. + */ + +#include "module.h" +#include "modules/encryption.h" + +class OldMD5Provider : public Encryption::Provider +{ + ServiceReference<Encryption::Provider> md5; + + public: + OldMD5Provider(Module *creator) : Encryption::Provider(creator, "oldmd5") + , md5("md5") + { + } + + Encryption::Context *CreateContext(Encryption::IV *iv) override + { + if (md5) + return md5->CreateContext(iv); + return NULL; + } + + Encryption::IV GetDefaultIV() override + { + if (md5) + return md5->GetDefaultIV(); + return Encryption::IV(static_cast<const uint32_t *>(NULL), 0); + } +}; + +class EOld : public Module + , public EventHook<Event::Encrypt> + , public EventHook<Event::CheckAuthentication> +{ + OldMD5Provider oldmd5provider; + ServiceReference<Encryption::Provider> md5; + + 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) + , EventHook<Event::Encrypt>(this) + , EventHook<Event::CheckAuthentication>(this) + , oldmd5provider(this) + , md5("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"); + + } + + EventReturn OnEncrypt(const Anope::string &src, Anope::string &dest) override + { + if (!md5) + return EVENT_CONTINUE; + + Encryption::Context *context = md5->CreateContext(); + context->Update(reinterpret_cast<const unsigned char *>(src.c_str()), src.length()); + context->Finalize(); + + Encryption::Hash hash = context->GetFinalizedHash(); + + char digest[32], digest2[16]; + memset(digest, 0, sizeof(digest)); + if (hash.second > sizeof(digest)) + throw CoreException("Hash too large"); + memcpy(digest, hash.first, hash.second); + + for (int i = 0; i < 32; i += 2) + digest2[i / 2] = XTOI(digest[i]) << 4 | XTOI(digest[i + 1]); + + Anope::string buf = "oldmd5:" + Anope::Hex(digest2, sizeof(digest2)); + + logger.Debug2("hashed password from [{0}] to [{1}]", src, buf); + + dest = buf; + delete context; + return EVENT_ALLOW; + } + + void OnCheckAuthentication(User *, NickServ::IdentifyRequest *req) override + { + NickServ::Nick *na = NickServ::FindNick(req->GetAccount()); + if (na == NULL) + return; + NickServ::Account *nc = na->GetAccount(); + + size_t pos = nc->GetPassword().find(':'); + if (pos == Anope::string::npos) + return; + Anope::string hash_method(nc->GetPassword().begin(), nc->GetPassword().begin() + pos); + if (!hash_method.equals_cs("oldmd5")) + return; + + Anope::string buf; + this->OnEncrypt(req->GetPassword(), buf); + if (nc->GetPassword().equals_cs(buf)) + { + /* if we are NOT the first module in the list, + * we want to re-encrypt the pass with the new encryption + */ + if (ModuleManager::FindFirstOf(ENCRYPTION) != this) + { + Anope::string p; + Anope::Encrypt(req->GetPassword(), p); + nc->SetPassword(p); + } + req->Success(this); + } + } +}; + +MODULE_INIT(EOld) |