X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fmodules%2Fextra%2Fm_ssl_openssl.cpp;h=a0043b7aa57c0e1b0465ecca0944b70a47769806;hb=36f93c0e7f8a980943237b0b28138ade86f5e573;hp=7524c0d0799e07a0d18b08d34f04b3a625942768;hpb=54fb0cd5aa7d090d5c3da5ab54988c86ba8a2e8e;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/modules/extra/m_ssl_openssl.cpp b/src/modules/extra/m_ssl_openssl.cpp index 7524c0d07..a0043b7aa 100644 --- a/src/modules/extra/m_ssl_openssl.cpp +++ b/src/modules/extra/m_ssl_openssl.cpp @@ -1,38 +1,58 @@ -/* +------------------------------------+ - * | Inspire Internet Relay Chat Daemon | - * +------------------------------------+ +/* + * InspIRCd -- Internet Relay Chat Daemon * - * InspIRCd: (C) 2002-2009 InspIRCd Development Team - * See: http://wiki.inspircd.org/Credits + * Copyright (C) 2009-2010 Daniel De Graaf + * Copyright (C) 2008 Pippijn van Steenhoven + * Copyright (C) 2006-2008 Craig Edwards + * Copyright (C) 2008 Thomas Stagner + * Copyright (C) 2007 Dennis Friis + * Copyright (C) 2006 Oliver Lupton * - * This program is free but copyrighted software; see - * the file COPYING for details. + * 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 . */ + /* HACK: This prevents OpenSSL on OS X 10.7 and later from spewing deprecation + * warnings for every single function call. As far as I (SaberUK) know, Apple + * have no plans to remove OpenSSL so this warning just causes needless spam. + */ +#ifdef __APPLE__ +# define __AVAILABILITYMACROS__ +# define DEPRECATED_IN_MAC_OS_X_VERSION_10_7_AND_LATER +#endif + #include "inspircd.h" +#include "iohook.h" #include #include -#include "ssl.h" - -#ifdef WINDOWS -#pragma comment(lib, "libeay32MTd") -#pragma comment(lib, "ssleay32MTd") -#undef MAX_DESCRIPTORS -#define MAX_DESCRIPTORS 10000 +#include "modules/ssl.h" + +#ifdef _WIN32 +# pragma comment(lib, "libcrypto.lib") +# pragma comment(lib, "libssl.lib") +# pragma comment(lib, "user32.lib") +# pragma comment(lib, "advapi32.lib") +# pragma comment(lib, "libgcc.lib") +# pragma comment(lib, "libmingwex.lib") +# pragma comment(lib, "gdi32.lib") +# undef MAX_DESCRIPTORS +# define MAX_DESCRIPTORS 10000 #endif -/* $ModDesc: Provides SSL support for clients */ - /* $LinkerFlags: if("USE_FREEBSD_BASE_SSL") -lssl -lcrypto */ /* $CompileFlags: if(!"USE_FREEBSD_BASE_SSL") pkgconfversion("openssl","0.9.7") pkgconfincludes("openssl","/openssl/ssl.h","") */ /* $LinkerFlags: if(!"USE_FREEBSD_BASE_SSL") rpath("pkg-config --libs openssl") pkgconflibs("openssl","/libssl.so","-lssl -lcrypto -ldl") */ -/* $ModDep: transport.h */ /* $NoPedantic */ -/* $CopyInstall: conf/key.pem $(CONPATH) */ -/* $CopyInstall: conf/cert.pem $(CONPATH) */ enum issl_status { ISSL_NONE, ISSL_HANDSHAKING, ISSL_OPEN }; @@ -55,7 +75,6 @@ public: issl_status status; reference cert; - int fd; bool outbound; bool data_to_write; @@ -80,238 +99,167 @@ static int OnVerify(int preverify_ok, X509_STORE_CTX *ctx) return 1; } -class ModuleSSLOpenSSL : public Module +class OpenSSLIOHook : public SSLIOHook { - int inbufsize; - issl_session* sessions; - - SSL_CTX* ctx; - SSL_CTX* clictx; - - char cipher[MAXBUF]; - - std::string keyfile; - std::string certfile; - std::string cafile; - // std::string crlfile; - std::string dhfile; - std::string sslports; - - ServiceProvider iohook; - public: - - ModuleSSLOpenSSL() : iohook(this, "ssl/openssl", SERVICE_IOHOOK) + private: + bool Handshake(StreamSocket* user, issl_session* session) { + int ret; - sessions = new issl_session[ServerInstance->SE->GetMaxFds()]; - - // Not rehashable...because I cba to reduce all the sizes of existing buffers. - inbufsize = ServerInstance->Config->NetBufferSize; + if (session->outbound) + ret = SSL_connect(session->sess); + else + ret = SSL_accept(session->sess); - /* Global SSL library initialization*/ - SSL_library_init(); - SSL_load_error_strings(); + if (ret < 0) + { + int err = SSL_get_error(session->sess, ret); - /* Build our SSL contexts: - * NOTE: OpenSSL makes us have two contexts, one for servers and one for clients. ICK. - */ - ctx = SSL_CTX_new( SSLv23_server_method() ); - clictx = SSL_CTX_new( SSLv23_client_method() ); + if (err == SSL_ERROR_WANT_READ) + { + ServerInstance->SE->ChangeEventMask(user, FD_WANT_POLL_READ | FD_WANT_NO_WRITE); + session->status = ISSL_HANDSHAKING; + return true; + } + else if (err == SSL_ERROR_WANT_WRITE) + { + ServerInstance->SE->ChangeEventMask(user, FD_WANT_NO_READ | FD_WANT_SINGLE_WRITE); + session->status = ISSL_HANDSHAKING; + return true; + } + else + { + CloseSession(session); + } - SSL_CTX_set_mode(ctx, SSL_MODE_ENABLE_PARTIAL_WRITE | SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER); - SSL_CTX_set_mode(clictx, SSL_MODE_ENABLE_PARTIAL_WRITE | SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER); + return false; + } + else if (ret > 0) + { + // Handshake complete. + VerifyCertificate(session, user); - SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE, OnVerify); - SSL_CTX_set_verify(clictx, SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE, OnVerify); + session->status = ISSL_OPEN; - // Needs the flag as it ignores a plain /rehash - OnModuleRehash(NULL,"ssl"); - Implementation eventlist[] = { I_On005Numeric, I_OnRehash, I_OnModuleRehash, I_OnHookIO, I_OnUserConnect }; - ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation)); - ServerInstance->Modules->AddService(iohook); - } + ServerInstance->SE->ChangeEventMask(user, FD_WANT_POLL_READ | FD_WANT_NO_WRITE | FD_ADD_TRIAL_WRITE); - void OnHookIO(StreamSocket* user, ListenSocket* lsb) - { - if (!user->GetIOHook() && lsb->bind_tag->getString("ssl") == "openssl") + return true; + } + else if (ret == 0) { - /* Hook the user with our module */ - user->AddIOHook(this); + CloseSession(session); + return true; } + + return true; } - void OnRehash(User* user) + void CloseSession(issl_session* session) { - ConfigReader Conf; - - sslports.clear(); - - for (size_t i = 0; i < ServerInstance->ports.size(); i++) + if (session->sess) { - ListenSocket* port = ServerInstance->ports[i]; - if (port->bind_tag->getString("ssl") != "openssl") - continue; - - std::string portid = port->bind_desc; - ServerInstance->Logs->Log("m_ssl_openssl", DEFAULT, "m_ssl_openssl.so: Enabling SSL for port %s", portid.c_str()); - if (port->bind_tag->getString("type", "clients") == "clients" && port->bind_addr != "127.0.0.1") - sslports.append(portid).append(";"); + SSL_shutdown(session->sess); + SSL_free(session->sess); } - if (!sslports.empty()) - sslports.erase(sslports.end() - 1); + session->sess = NULL; + session->status = ISSL_NONE; + errno = EIO; } - void OnModuleRehash(User* user, const std::string ¶m) + void VerifyCertificate(issl_session* session, StreamSocket* user) { - if (param != "ssl") + if (!session->sess || !user) return; - OnRehash(user); - - ConfigReader Conf; - - cafile = Conf.ReadValue("openssl", "cafile", 0); - certfile = Conf.ReadValue("openssl", "certfile", 0); - keyfile = Conf.ReadValue("openssl", "keyfile", 0); - dhfile = Conf.ReadValue("openssl", "dhfile", 0); - - // Set all the default values needed. - if (cafile.empty()) - cafile = "conf/ca.pem"; - - if (certfile.empty()) - certfile = "conf/cert.pem"; - - if (keyfile.empty()) - keyfile = "conf/key.pem"; + X509* cert; + ssl_cert* certinfo = new ssl_cert; + session->cert = certinfo; + unsigned int n; + unsigned char md[EVP_MAX_MD_SIZE]; - if (dhfile.empty()) - dhfile = "conf/dhparams.pem"; + cert = SSL_get_peer_certificate((SSL*)session->sess); - /* Load our keys and certificates - * NOTE: OpenSSL's error logging API sucks, don't blame us for this clusterfuck. - */ - if ((!SSL_CTX_use_certificate_chain_file(ctx, certfile.c_str())) || (!SSL_CTX_use_certificate_chain_file(clictx, certfile.c_str()))) + if (!cert) { - ServerInstance->Logs->Log("m_ssl_openssl",DEFAULT, "m_ssl_openssl.so: Can't read certificate file %s. %s", certfile.c_str(), strerror(errno)); - ERR_print_errors_cb(error_callback, this); + certinfo->error = "Could not get peer certificate: "+std::string(get_error()); + return; } - if (((!SSL_CTX_use_PrivateKey_file(ctx, keyfile.c_str(), SSL_FILETYPE_PEM))) || (!SSL_CTX_use_PrivateKey_file(clictx, keyfile.c_str(), SSL_FILETYPE_PEM))) + certinfo->invalid = (SSL_get_verify_result(session->sess) != X509_V_OK); + + if (SelfSigned) { - ServerInstance->Logs->Log("m_ssl_openssl",DEFAULT, "m_ssl_openssl.so: Can't read key file %s. %s", keyfile.c_str(), strerror(errno)); - ERR_print_errors_cb(error_callback, this); + certinfo->unknownsigner = false; + certinfo->trusted = true; } - - /* Load the CAs we trust*/ - if (((!SSL_CTX_load_verify_locations(ctx, cafile.c_str(), 0))) || (!SSL_CTX_load_verify_locations(clictx, cafile.c_str(), 0))) + else { - ServerInstance->Logs->Log("m_ssl_openssl",DEFAULT, "m_ssl_openssl.so: Can't read CA list from %s. %s", cafile.c_str(), strerror(errno)); - ERR_print_errors_cb(error_callback, this); + certinfo->unknownsigner = true; + certinfo->trusted = false; } - FILE* dhpfile = fopen(dhfile.c_str(), "r"); - DH* ret; + certinfo->dn = X509_NAME_oneline(X509_get_subject_name(cert),0,0); + certinfo->issuer = X509_NAME_oneline(X509_get_issuer_name(cert),0,0); - if (dhpfile == NULL) + if (!X509_digest(cert, digest, md, &n)) { - ServerInstance->Logs->Log("m_ssl_openssl",DEFAULT, "m_ssl_openssl.so Couldn't open DH file %s: %s", dhfile.c_str(), strerror(errno)); - throw ModuleException("Couldn't open DH file " + dhfile + ": " + strerror(errno)); + certinfo->error = "Out of memory generating fingerprint"; } else { - ret = PEM_read_DHparams(dhpfile, NULL, NULL, NULL); - if ((SSL_CTX_set_tmp_dh(ctx, ret) < 0) || (SSL_CTX_set_tmp_dh(clictx, ret) < 0)) - { - ServerInstance->Logs->Log("m_ssl_openssl",DEFAULT, "m_ssl_openssl.so: Couldn't set DH parameters %s. SSL errors follow:", dhfile.c_str()); - ERR_print_errors_cb(error_callback, this); - } + certinfo->fingerprint = BinToHex(md, n); } - fclose(dhpfile); - } - - void On005Numeric(std::string &output) - { - if (!sslports.empty()) - output.append(" SSL=" + sslports); - } - - ~ModuleSSLOpenSSL() - { - SSL_CTX_free(ctx); - SSL_CTX_free(clictx); - delete[] sessions; - } - - void OnUserConnect(LocalUser* user) - { - if (user->eh.GetIOHook() == this) + if ((ASN1_UTCTIME_cmp_time_t(X509_get_notAfter(cert), ServerInstance->Time()) == -1) || (ASN1_UTCTIME_cmp_time_t(X509_get_notBefore(cert), ServerInstance->Time()) == 0)) { - if (sessions[user->GetFd()].sess) - { - SSLCertSubmission(user, this, ServerInstance->Modules->Find("m_sslinfo.so"), sessions[user->GetFd()].cert); - } + certinfo->error = "Not activated, or expired certificate"; } - } - void OnCleanup(int target_type, void* item) - { - if (target_type == TYPE_USER) - { - LocalUser* user = IS_LOCAL((User*)item); - - if (user && user->eh.GetIOHook() == this) - { - // User is using SSL, they're a local user, and they're using one of *our* SSL ports. - // Potentially there could be multiple SSL modules loaded at once on different ports. - ServerInstance->Users->QuitUser(user, "SSL module unloading"); - } - } + X509_free(cert); } - Version GetVersion() + public: + issl_session* sessions; + SSL_CTX* ctx; + SSL_CTX* clictx; + const EVP_MD *digest; + + OpenSSLIOHook(Module* mod) + : SSLIOHook(mod, "ssl/openssl") { - return Version("Provides SSL support for clients", VF_VENDOR); + sessions = new issl_session[ServerInstance->SE->GetMaxFds()]; } - void OnRequest(Request& request) + ~OpenSSLIOHook() { - if (strcmp("GET_SSL_CERT", request.id) == 0) - { - SocketCertificateRequest& req = static_cast(request); - int fd = req.sock->GetFd(); - issl_session* session = &sessions[fd]; - - req.cert = session->cert; - } + delete[] sessions; } - void OnStreamSocketAccept(StreamSocket* user, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server) + void OnStreamSocketAccept(StreamSocket* user, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server) CXX11_OVERRIDE { int fd = user->GetFd(); issl_session* session = &sessions[fd]; - session->fd = fd; session->sess = SSL_new(ctx); session->status = ISSL_NONE; session->outbound = false; + session->cert = NULL; if (session->sess == NULL) return; if (SSL_set_fd(session->sess, fd) == 0) { - ServerInstance->Logs->Log("m_ssl_openssl",DEBUG,"BUG: Can't set fd with SSL_set_fd: %d", fd); + ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "BUG: Can't set fd with SSL_set_fd: %d", fd); return; } Handshake(user, session); } - void OnStreamSocketConnect(StreamSocket* user) + void OnStreamSocketConnect(StreamSocket* user) CXX11_OVERRIDE { int fd = user->GetFd(); /* Are there any possibilities of an out of range fd? Hope not, but lets be paranoid */ @@ -320,7 +268,6 @@ class ModuleSSLOpenSSL : public Module issl_session* session = &sessions[fd]; - session->fd = fd; session->sess = SSL_new(clictx); session->status = ISSL_NONE; session->outbound = true; @@ -330,14 +277,14 @@ class ModuleSSLOpenSSL : public Module if (SSL_set_fd(session->sess, fd) == 0) { - ServerInstance->Logs->Log("m_ssl_openssl",DEBUG,"BUG: Can't set fd with SSL_set_fd: %d", fd); + ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "BUG: Can't set fd with SSL_set_fd: %d", fd); return; } Handshake(user, session); } - void OnStreamSocketClose(StreamSocket* user) + void OnStreamSocketClose(StreamSocket* user) CXX11_OVERRIDE { int fd = user->GetFd(); /* Are there any possibilities of an out of range fd? Hope not, but lets be paranoid */ @@ -347,7 +294,7 @@ class ModuleSSLOpenSSL : public Module CloseSession(&sessions[fd]); } - int OnStreamSocketRead(StreamSocket* user, std::string& recvq) + int OnStreamSocketRead(StreamSocket* user, std::string& recvq) CXX11_OVERRIDE { int fd = user->GetFd(); /* Are there any possibilities of an out of range fd? Hope not, but lets be paranoid */ @@ -381,16 +328,19 @@ class ModuleSSLOpenSSL : public Module char* buffer = ServerInstance->GetReadBuffer(); size_t bufsiz = ServerInstance->Config->NetBufferSize; int ret = SSL_read(session->sess, buffer, bufsiz); - + if (ret > 0) { recvq.append(buffer, ret); + if (session->data_to_write) + ServerInstance->SE->ChangeEventMask(user, FD_WANT_POLL_READ | FD_WANT_SINGLE_WRITE); return 1; } else if (ret == 0) { // Client closed connection. CloseSession(session); + user->SetError("Connection closed"); return -1; } else if (ret < 0) @@ -418,7 +368,7 @@ class ModuleSSLOpenSSL : public Module return 0; } - int OnStreamSocketWrite(StreamSocket* user, std::string& buffer) + int OnStreamSocketWrite(StreamSocket* user, std::string& buffer) CXX11_OVERRIDE { int fd = user->GetFd(); @@ -474,7 +424,7 @@ class ModuleSSLOpenSSL : public Module } else if (err == SSL_ERROR_WANT_READ) { - ServerInstance->SE->ChangeEventMask(user, FD_WANT_POLL_READ | FD_WANT_NO_WRITE); + ServerInstance->SE->ChangeEventMask(user, FD_WANT_POLL_READ); return 0; } else @@ -487,128 +437,232 @@ class ModuleSSLOpenSSL : public Module return 0; } - bool Handshake(StreamSocket* user, issl_session* session) + ssl_cert* GetCertificate(StreamSocket* sock) CXX11_OVERRIDE { - int ret; - - if (session->outbound) - ret = SSL_connect(session->sess); - else - ret = SSL_accept(session->sess); + int fd = sock->GetFd(); + issl_session* session = &sessions[fd]; + return session->cert; + } - if (ret < 0) + void TellCiphersAndFingerprint(LocalUser* user) + { + issl_session& s = sessions[user->eh.GetFd()]; + if (s.sess) { - int err = SSL_get_error(session->sess, ret); - - if (err == SSL_ERROR_WANT_READ) - { - ServerInstance->SE->ChangeEventMask(user, FD_WANT_POLL_READ | FD_WANT_NO_WRITE); - session->status = ISSL_HANDSHAKING; - return true; - } - else if (err == SSL_ERROR_WANT_WRITE) - { - ServerInstance->SE->ChangeEventMask(user, FD_WANT_NO_READ | FD_WANT_SINGLE_WRITE); - session->status = ISSL_HANDSHAKING; - return true; - } - else - { - CloseSession(session); - } + std::string text = "*** You are connected using SSL cipher '" + std::string(SSL_get_cipher(s.sess)) + "'"; + const std::string& fingerprint = s.cert->fingerprint; + if (!fingerprint.empty()) + text += " and your SSL fingerprint is " + fingerprint; - return false; + user->WriteNotice(text); } - else if (ret > 0) - { - // Handshake complete. - VerifyCertificate(session, user); + } +}; - session->status = ISSL_OPEN; +class ModuleSSLOpenSSL : public Module +{ + std::string sslports; + OpenSSLIOHook iohook; - ServerInstance->SE->ChangeEventMask(user, FD_WANT_POLL_READ | FD_WANT_NO_WRITE | FD_ADD_TRIAL_WRITE); + public: + ModuleSSLOpenSSL() : iohook(this) + { + /* Global SSL library initialization*/ + SSL_library_init(); + SSL_load_error_strings(); - return true; - } - else if (ret == 0) - { - CloseSession(session); - return true; - } + /* Build our SSL contexts: + * NOTE: OpenSSL makes us have two contexts, one for servers and one for clients. ICK. + */ + iohook.ctx = SSL_CTX_new( SSLv23_server_method() ); + iohook.clictx = SSL_CTX_new( SSLv23_client_method() ); - return true; + SSL_CTX_set_mode(iohook.ctx, SSL_MODE_ENABLE_PARTIAL_WRITE | SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER); + SSL_CTX_set_mode(iohook.clictx, SSL_MODE_ENABLE_PARTIAL_WRITE | SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER); + + SSL_CTX_set_verify(iohook.ctx, SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE, OnVerify); + SSL_CTX_set_verify(iohook.clictx, SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE, OnVerify); } - void CloseSession(issl_session* session) + ~ModuleSSLOpenSSL() { - if (session->sess) + SSL_CTX_free(iohook.ctx); + SSL_CTX_free(iohook.clictx); + } + + void init() CXX11_OVERRIDE + { + // Needs the flag as it ignores a plain /rehash + OnModuleRehash(NULL,"ssl"); + Implementation eventlist[] = { I_On005Numeric, I_OnRehash, I_OnModuleRehash, I_OnHookIO, I_OnUserConnect }; + ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation)); + ServerInstance->Modules->AddService(iohook); + } + + void OnHookIO(StreamSocket* user, ListenSocket* lsb) CXX11_OVERRIDE + { + if (!user->GetIOHook() && lsb->bind_tag->getString("ssl") == "openssl") { - SSL_shutdown(session->sess); - SSL_free(session->sess); + /* Hook the user with our module */ + user->AddIOHook(&iohook); } + } - session->sess = NULL; - session->status = ISSL_NONE; - errno = EIO; + void OnRehash(User* user) CXX11_OVERRIDE + { + sslports.clear(); + + ConfigTag* Conf = ServerInstance->Config->ConfValue("openssl"); + + if (Conf->getBool("showports", true)) + { + sslports = Conf->getString("advertisedports"); + if (!sslports.empty()) + return; + + for (size_t i = 0; i < ServerInstance->ports.size(); i++) + { + ListenSocket* port = ServerInstance->ports[i]; + if (port->bind_tag->getString("ssl") != "openssl") + continue; + + const std::string& portid = port->bind_desc; + ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Enabling SSL for port %s", portid.c_str()); + + if (port->bind_tag->getString("type", "clients") == "clients" && port->bind_addr != "127.0.0.1") + { + /* + * Found an SSL port for clients that is not bound to 127.0.0.1 and handled by us, display + * the IP:port in ISUPPORT. + * + * We used to advertise all ports seperated by a ';' char that matched the above criteria, + * but this resulted in too long ISUPPORT lines if there were lots of ports to be displayed. + * To solve this by default we now only display the first IP:port found and let the user + * configure the exact value for the 005 token, if necessary. + */ + sslports = portid; + break; + } + } + } } - void VerifyCertificate(issl_session* session, StreamSocket* user) + void OnModuleRehash(User* user, const std::string ¶m) CXX11_OVERRIDE { - if (!session->sess || !user || session->cert) + if (param != "ssl") return; - X509* cert; - ssl_cert* certinfo = new ssl_cert; - session->cert = certinfo; - unsigned int n; - unsigned char md[EVP_MAX_MD_SIZE]; - const EVP_MD *digest = EVP_md5(); + std::string keyfile; + std::string certfile; + std::string cafile; + std::string dhfile; + OnRehash(user); - cert = SSL_get_peer_certificate((SSL*)session->sess); + ConfigTag* conf = ServerInstance->Config->ConfValue("openssl"); - if (!cert) + cafile = conf->getString("cafile", CONFIG_PATH "/ca.pem"); + certfile = conf->getString("certfile", CONFIG_PATH "/cert.pem"); + keyfile = conf->getString("keyfile", CONFIG_PATH "/key.pem"); + dhfile = conf->getString("dhfile", CONFIG_PATH "/dhparams.pem"); + std::string hash = conf->getString("hash", "md5"); + + iohook.digest = EVP_get_digestbyname(hash.c_str()); + if (iohook.digest == NULL) + throw ModuleException("Unknown hash type " + hash); + + std::string ciphers = conf->getString("ciphers", ""); + + SSL_CTX* ctx = iohook.ctx; + SSL_CTX* clictx = iohook.clictx; + + if (!ciphers.empty()) { - certinfo->error = "Could not get peer certificate: "+std::string(get_error()); - return; + if ((!SSL_CTX_set_cipher_list(ctx, ciphers.c_str())) || (!SSL_CTX_set_cipher_list(clictx, ciphers.c_str()))) + { + ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Can't set cipher list to %s.", ciphers.c_str()); + ERR_print_errors_cb(error_callback, this); + } } - certinfo->invalid = (SSL_get_verify_result(session->sess) != X509_V_OK); + /* Load our keys and certificates + * NOTE: OpenSSL's error logging API sucks, don't blame us for this clusterfuck. + */ + if ((!SSL_CTX_use_certificate_chain_file(ctx, certfile.c_str())) || (!SSL_CTX_use_certificate_chain_file(clictx, certfile.c_str()))) + { + ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Can't read certificate file %s. %s", certfile.c_str(), strerror(errno)); + ERR_print_errors_cb(error_callback, this); + } - if (SelfSigned) + if (((!SSL_CTX_use_PrivateKey_file(ctx, keyfile.c_str(), SSL_FILETYPE_PEM))) || (!SSL_CTX_use_PrivateKey_file(clictx, keyfile.c_str(), SSL_FILETYPE_PEM))) { - certinfo->unknownsigner = false; - certinfo->trusted = true; + ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Can't read key file %s. %s", keyfile.c_str(), strerror(errno)); + ERR_print_errors_cb(error_callback, this); } - else + + /* Load the CAs we trust*/ + if (((!SSL_CTX_load_verify_locations(ctx, cafile.c_str(), 0))) || (!SSL_CTX_load_verify_locations(clictx, cafile.c_str(), 0))) { - certinfo->unknownsigner = true; - certinfo->trusted = false; + ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Can't read CA list from %s. This is only a problem if you want to verify client certificates, otherwise it's safe to ignore this message. Error: %s", cafile.c_str(), strerror(errno)); + ERR_print_errors_cb(error_callback, this); } - certinfo->dn = X509_NAME_oneline(X509_get_subject_name(cert),0,0); - certinfo->issuer = X509_NAME_oneline(X509_get_issuer_name(cert),0,0); + FILE* dhpfile = fopen(dhfile.c_str(), "r"); + DH* ret; - if (!X509_digest(cert, digest, md, &n)) + if (dhpfile == NULL) { - certinfo->error = "Out of memory generating fingerprint"; + ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Couldn't open DH file %s: %s", dhfile.c_str(), strerror(errno)); + throw ModuleException("Couldn't open DH file " + dhfile + ": " + strerror(errno)); } else { - certinfo->fingerprint = irc::hex(md, n); + ret = PEM_read_DHparams(dhpfile, NULL, NULL, NULL); + if ((SSL_CTX_set_tmp_dh(ctx, ret) < 0) || (SSL_CTX_set_tmp_dh(clictx, ret) < 0)) + { + ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Couldn't set DH parameters %s. SSL errors follow:", dhfile.c_str()); + ERR_print_errors_cb(error_callback, this); + } } - if ((ASN1_UTCTIME_cmp_time_t(X509_get_notAfter(cert), ServerInstance->Time()) == -1) || (ASN1_UTCTIME_cmp_time_t(X509_get_notBefore(cert), ServerInstance->Time()) == 0)) + fclose(dhpfile); + } + + void On005Numeric(std::map& tokens) CXX11_OVERRIDE + { + if (!sslports.empty()) + tokens["SSL"] = sslports; + } + + void OnUserConnect(LocalUser* user) CXX11_OVERRIDE + { + if (user->eh.GetIOHook() == &iohook) + iohook.TellCiphersAndFingerprint(user); + } + + void OnCleanup(int target_type, void* item) CXX11_OVERRIDE + { + if (target_type == TYPE_USER) { - certinfo->error = "Not activated, or expired certificate"; + LocalUser* user = IS_LOCAL((User*)item); + + if (user && user->eh.GetIOHook() == &iohook) + { + // User is using SSL, they're a local user, and they're using one of *our* SSL ports. + // Potentially there could be multiple SSL modules loaded at once on different ports. + ServerInstance->Users->QuitUser(user, "SSL module unloading"); + } } + } - X509_free(cert); + Version GetVersion() CXX11_OVERRIDE + { + return Version("Provides SSL support for clients", VF_VENDOR); } }; static int error_callback(const char *str, size_t len, void *u) { - ServerInstance->Logs->Log("m_ssl_openssl",DEFAULT, "SSL error: " + std::string(str, len - 1)); + ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "SSL error: " + std::string(str, len - 1)); // // XXX: Remove this line, it causes valgrind warnings...