mirror of git://git.acid.vegas/anope.git
111 lines
2.9 KiB
C++
111 lines
2.9 KiB
C++
/* Include file for high-level encryption routines.
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*
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* (C) 2003-2022 Anope Team
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* Contact us at team@anope.org
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*
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* Please read COPYING and README for further details.
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*
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* Based on the original code of Epona by Lara.
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* Based on the original code of Services by Andy Church.
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*/
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#include "module.h"
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#include "modules/encryption.h"
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static ServiceReference<Encryption::Provider> md5("Encryption::Provider", "md5");
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class OldMD5Provider : public Encryption::Provider
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{
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public:
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OldMD5Provider(Module *creator) : Encryption::Provider(creator, "oldmd5") { }
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Encryption::Context *CreateContext(Encryption::IV *iv) anope_override
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{
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if (md5)
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return md5->CreateContext(iv);
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return NULL;
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}
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Encryption::IV GetDefaultIV() anope_override
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{
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if (md5)
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return md5->GetDefaultIV();
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return Encryption::IV(static_cast<const uint32_t *>(NULL), 0);
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}
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};
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class EOld : public Module
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{
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OldMD5Provider oldmd5provider;
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inline static char XTOI(char c) { return c > 9 ? c - 'A' + 10 : c - '0'; }
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public:
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EOld(const Anope::string &modname, const Anope::string &creator) : Module(modname, creator, ENCRYPTION | VENDOR),
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oldmd5provider(this)
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{
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ModuleManager::LoadModule("enc_md5", User::Find(creator, true));
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if (!md5)
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throw ModuleException("Unable to find md5 reference");
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}
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EventReturn OnEncrypt(const Anope::string &src, Anope::string &dest) anope_override
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{
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if (!md5)
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return EVENT_CONTINUE;
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Encryption::Context *context = md5->CreateContext();
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context->Update(reinterpret_cast<const unsigned char *>(src.c_str()), src.length());
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context->Finalize();
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Encryption::Hash hash = context->GetFinalizedHash();
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char digest[32], digest2[16];
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memset(digest, 0, sizeof(digest));
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if (hash.second > sizeof(digest))
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throw CoreException("Hash too large");
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memcpy(digest, hash.first, hash.second);
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for (int i = 0; i < 32; i += 2)
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digest2[i / 2] = XTOI(digest[i]) << 4 | XTOI(digest[i + 1]);
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Anope::string buf = "oldmd5:" + Anope::Hex(digest2, sizeof(digest2));
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Log(LOG_DEBUG_2) << "(enc_old) hashed password from [" << src << "] to [" << buf << "]";
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dest = buf;
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delete context;
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return EVENT_ALLOW;
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}
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void OnCheckAuthentication(User *, IdentifyRequest *req) anope_override
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{
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const NickAlias *na = NickAlias::Find(req->GetAccount());
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if (na == NULL)
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return;
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NickCore *nc = na->nc;
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size_t pos = nc->pass.find(':');
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if (pos == Anope::string::npos)
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return;
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Anope::string hash_method(nc->pass.begin(), nc->pass.begin() + pos);
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if (!hash_method.equals_cs("oldmd5"))
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return;
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Anope::string buf;
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this->OnEncrypt(req->GetPassword(), buf);
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if (nc->pass.equals_cs(buf))
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{
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/* if we are NOT the first module in the list,
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* we want to re-encrypt the pass with the new encryption
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*/
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if (ModuleManager::FindFirstOf(ENCRYPTION) != this)
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Anope::Encrypt(req->GetPassword(), nc->pass);
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req->Success(this);
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}
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}
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};
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MODULE_INIT(EOld)
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