-/* +------------------------------------+
- * | 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 <danieldg@inspircd.org>
+ * Copyright (C) 2008 Pippijn van Steenhoven <pip88nl@gmail.com>
+ * Copyright (C) 2006-2008 Craig Edwards <craigedwards@brainbox.cc>
+ * Copyright (C) 2008 Thomas Stagner <aquanight@inspircd.org>
+ * Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
+ * Copyright (C) 2006 Oliver Lupton <oliverlupton@gmail.com>
*
- * 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 <http://www.gnu.org/licenses/>.
*/
+ /* 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 <openssl/ssl.h>
#include <openssl/err.h>
-#include "transport.h"
+#include "ssl.h"
-#ifdef WINDOWS
-#pragma comment(lib, "libeay32MTd")
-#pragma comment(lib, "ssleay32MTd")
-#undef MAX_DESCRIPTORS
-#define MAX_DESCRIPTORS 10000
+#ifdef _WIN32
+# pragma comment(lib, "ssleay32.lib")
+# pragma comment(lib, "libeay32.lib")
+# undef MAX_DESCRIPTORS
+# define MAX_DESCRIPTORS 10000
#endif
/* $ModDesc: Provides SSL support for clients */
/* $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) */
+class ModuleSSLOpenSSL;
+
enum issl_status { ISSL_NONE, ISSL_HANDSHAKING, ISSL_OPEN };
-enum issl_io_status { ISSL_WRITE, ISSL_READ };
static bool SelfSigned = false;
-bool isin(const std::string &host, int port, const std::vector<std::string> &portlist)
-{
- if (std::find(portlist.begin(), portlist.end(), "*:" + ConvToStr(port)) != portlist.end())
- return true;
-
- if (std::find(portlist.begin(), portlist.end(), ":" + ConvToStr(port)) != portlist.end())
- return true;
-
- return std::find(portlist.begin(), portlist.end(), host + ":" + ConvToStr(port)) != portlist.end();
-}
+#ifdef INSPIRCD_OPENSSL_ENABLE_RENEGO_DETECTION
+static ModuleSSLOpenSSL* opensslmod = NULL;
+#endif
char* get_error()
{
/** Represents an SSL user's extra data
*/
-class issl_session : public classbase
+class issl_session
{
public:
SSL* sess;
issl_status status;
- issl_io_status rstat;
- issl_io_status wstat;
+ reference<ssl_cert> cert;
- unsigned int inbufoffset;
- char* inbuf; // Buffer OpenSSL reads into.
- std::string outbuf; // Buffer for outgoing data that OpenSSL will not take.
- int fd;
bool outbound;
+ bool data_to_write;
issl_session()
+ : sess(NULL)
+ , status(ISSL_NONE)
{
outbound = false;
- rstat = ISSL_READ;
- wstat = ISSL_WRITE;
+ data_to_write = false;
}
};
class ModuleSSLOpenSSL : public Module
{
- std::vector<std::string> listenports;
-
- int inbufsize;
issl_session* sessions;
SSL_CTX* ctx;
SSL_CTX* clictx;
- char* dummy;
- char cipher[MAXBUF];
+ long ctx_options;
+ long clictx_options;
- std::string keyfile;
- std::string certfile;
- std::string cafile;
- // std::string crlfile;
- std::string dhfile;
std::string sslports;
+ bool use_sha;
- int clientactive;
+ ServiceProvider iohook;
- public:
+ static void SetContextOptions(SSL_CTX* ctx, long defoptions, const std::string& ctxname, ConfigTag* tag)
+ {
+ long setoptions = tag->getInt(ctxname + "setoptions");
+ // User-friendly config options for setting context options
+#ifdef SSL_OP_CIPHER_SERVER_PREFERENCE
+ if (tag->getBool("cipherserverpref"))
+ setoptions |= SSL_OP_CIPHER_SERVER_PREFERENCE;
+#endif
+#ifdef SSL_OP_NO_COMPRESSION
+ if (!tag->getBool("compression", true))
+ setoptions |= SSL_OP_NO_COMPRESSION;
+#endif
+ if (!tag->getBool("sslv3", true))
+ setoptions |= SSL_OP_NO_SSLv3;
+ if (!tag->getBool("tlsv1", true))
+ setoptions |= SSL_OP_NO_TLSv1;
+
+ long clearoptions = tag->getInt(ctxname + "clearoptions");
+ ServerInstance->Logs->Log("m_ssl_openssl", DEBUG, "Setting OpenSSL %s context options, default: %ld set: %ld clear: %ld", ctxname.c_str(), defoptions, setoptions, clearoptions);
- InspIRCd* PublicInstance;
+ // Clear everything
+ SSL_CTX_clear_options(ctx, SSL_CTX_get_options(ctx));
- ModuleSSLOpenSSL(InspIRCd* Me)
- : Module(Me), PublicInstance(Me)
+ // Set the default options and what is in the conf
+ SSL_CTX_set_options(ctx, defoptions | setoptions);
+ long final = SSL_CTX_clear_options(ctx, clearoptions);
+ ServerInstance->Logs->Log("m_ssl_openssl", DEFAULT, "OpenSSL %s context options: %ld", ctxname.c_str(), final);
+ }
+
+#ifdef INSPIRCD_OPENSSL_ENABLE_ECDH
+ void SetupECDH(ConfigTag* tag)
{
- ServerInstance->Modules->PublishInterface("BufferedSocketHook", this);
+ std::string curvename = tag->getString("ecdhcurve", "prime256v1");
+ if (curvename.empty())
+ return;
- sessions = new issl_session[ServerInstance->SE->GetMaxFds()];
+ int nid = OBJ_sn2nid(curvename.c_str());
+ if (nid == 0)
+ {
+ ServerInstance->Logs->Log("m_ssl_openssl", DEFAULT, "m_ssl_openssl.so: Unknown curve: \"%s\"", curvename.c_str());
+ return;
+ }
- // Not rehashable...because I cba to reduce all the sizes of existing buffers.
- inbufsize = ServerInstance->Config->NetBufferSize;
+ EC_KEY* eckey = EC_KEY_new_by_curve_name(nid);
+ if (!eckey)
+ {
+ ServerInstance->Logs->Log("m_ssl_openssl", DEFAULT, "m_ssl_openssl.so: Unable to create EC key object");
+ return;
+ }
+
+ ERR_clear_error();
+ if (SSL_CTX_set_tmp_ecdh(ctx, eckey) < 0)
+ {
+ ServerInstance->Logs->Log("m_ssl_openssl", DEFAULT, "m_ssl_openssl.so: Couldn't set ECDH parameters");
+ ERR_print_errors_cb(error_callback, this);
+ }
+
+ EC_KEY_free(eckey);
+ }
+#endif
+
+#ifdef INSPIRCD_OPENSSL_ENABLE_RENEGO_DETECTION
+ static void SSLInfoCallback(const SSL* ssl, int where, int rc)
+ {
+ int fd = SSL_get_fd(const_cast<SSL*>(ssl));
+ issl_session& session = opensslmod->sessions[fd];
+
+ if ((where & SSL_CB_HANDSHAKE_START) && (session.status == ISSL_OPEN))
+ {
+ // The other side is trying to renegotiate, kill the connection and change status
+ // to ISSL_NONE so CheckRenego() closes the session
+ session.status = ISSL_NONE;
+ ServerInstance->SE->Shutdown(fd, 2);
+ }
+ }
+
+ bool CheckRenego(StreamSocket* sock, issl_session* session)
+ {
+ if (session->status != ISSL_NONE)
+ return true;
+
+ ServerInstance->Logs->Log("m_ssl_openssl", DEBUG, "Session %p killed, attempted to renegotiate", (void*)session->sess);
+ CloseSession(session);
+ sock->SetError("Renegotiation is not allowed");
+ return false;
+ }
+#endif
+
+ public:
+
+ ModuleSSLOpenSSL() : iohook(this, "ssl/openssl", SERVICE_IOHOOK)
+ {
+#ifdef INSPIRCD_OPENSSL_ENABLE_RENEGO_DETECTION
+ opensslmod = this;
+#endif
+ sessions = new issl_session[ServerInstance->SE->GetMaxFds()];
/* Global SSL library initialization*/
SSL_library_init();
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);
+ SSL_CTX_set_session_cache_mode(ctx, SSL_SESS_CACHE_OFF);
+ SSL_CTX_set_session_cache_mode(clictx, SSL_SESS_CACHE_OFF);
+
+ long opts = SSL_OP_NO_SSLv2 | SSL_OP_SINGLE_DH_USE;
+ // Only turn options on if they exist
+#ifdef SSL_OP_SINGLE_ECDH_USE
+ opts |= SSL_OP_SINGLE_ECDH_USE;
+#endif
+#ifdef SSL_OP_NO_TICKET
+ opts |= SSL_OP_NO_TICKET;
+#endif
+
+ ctx_options = SSL_CTX_set_options(ctx, opts);
+ clictx_options = SSL_CTX_set_options(clictx, opts);
+ }
+
+ void init()
+ {
// Needs the flag as it ignores a plain /rehash
OnModuleRehash(NULL,"ssl");
- Implementation eventlist[] = { I_OnRawSocketConnect, I_OnRawSocketAccept,
- I_OnRawSocketClose, I_OnRawSocketRead, I_OnRawSocketWrite, I_OnCleanup, I_On005Numeric,
- I_OnBufferFlushed, I_OnRequest, I_OnSyncUserMetaData, I_OnDecodeMetaData,
- I_OnUnloadModule, I_OnRehash, I_OnModuleRehash, I_OnWhois, I_OnPostConnect,
- I_OnHookUserIO };
- ServerInstance->Modules->Attach(eventlist, this, 17);
+ 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);
}
- virtual void OnHookUserIO(User* user, const std::string &targetip)
+ void OnHookIO(StreamSocket* user, ListenSocket* lsb)
{
- if (!user->GetIOHook() && isin(targetip,user->GetPort(), listenports))
+ if (!user->GetIOHook() && lsb->bind_tag->getString("ssl") == "openssl")
{
/* Hook the user with our module */
user->AddIOHook(this);
}
}
- virtual void OnRehash(User* user)
+ void OnRehash(User* user)
{
- ConfigReader Conf(ServerInstance);
-
- listenports.clear();
- clientactive = 0;
sslports.clear();
- for(int index = 0; index < Conf.Enumerate("bind"); index++)
+ ConfigTag* Conf = ServerInstance->Config->ConfValue("openssl");
+
+#ifdef INSPIRCD_OPENSSL_ENABLE_RENEGO_DETECTION
+ // Set the callback if we are not allowing renegotiations, unset it if we do
+ if (Conf->getBool("renegotiation", true))
+ {
+ SSL_CTX_set_info_callback(ctx, NULL);
+ SSL_CTX_set_info_callback(clictx, NULL);
+ }
+ else
{
- // For each <bind> tag
- std::string x = Conf.ReadValue("bind", "type", index);
- if(((x.empty()) || (x == "clients")) && (Conf.ReadValue("bind", "ssl", index) == "openssl"))
+ SSL_CTX_set_info_callback(ctx, SSLInfoCallback);
+ SSL_CTX_set_info_callback(clictx, SSLInfoCallback);
+ }
+#endif
+
+ if (Conf->getBool("showports", true))
+ {
+ sslports = Conf->getString("advertisedports");
+ if (!sslports.empty())
+ return;
+
+ for (size_t i = 0; i < ServerInstance->ports.size(); i++)
{
- // Get the port we're meant to be listening on with SSL
- std::string port = Conf.ReadValue("bind", "port", index);
- std::string addr = Conf.ReadValue("bind", "address", index);
+ ListenSocket* port = ServerInstance->ports[i];
+ if (port->bind_tag->getString("ssl") != "openssl")
+ continue;
- if (!addr.empty())
- {
- // normalize address, important for IPv6
- int portint = 0;
- irc::sockets::sockaddrs bin;
- if (irc::sockets::aptosa(addr.c_str(), portint, &bin))
- irc::sockets::satoap(&bin, addr, portint);
- }
+ const 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());
- irc::portparser portrange(port, false);
- long portno = -1;
- while ((portno = portrange.GetToken()))
+ if (port->bind_tag->getString("type", "clients") == "clients" && port->bind_addr != "127.0.0.1")
{
- clientactive++;
- try
- {
- listenports.push_back(addr + ":" + ConvToStr(portno));
-
- for (size_t i = 0; i < ServerInstance->Config->ports.size(); i++)
- if ((ServerInstance->Config->ports[i]->GetPort() == portno) && (ServerInstance->Config->ports[i]->GetIP() == addr))
- ServerInstance->Config->ports[i]->SetDescription("ssl");
- ServerInstance->Logs->Log("m_ssl_openssl",DEFAULT, "m_ssl_openssl.so: Enabling SSL for port %ld", portno);
-
- if (addr != "127.0.0.1")
- sslports.append((addr.empty() ? "*" : addr)).append(":").append(ConvToStr(portno)).append(";");
- }
- catch (ModuleException &e)
- {
- ServerInstance->Logs->Log("m_ssl_openssl",DEFAULT, "m_ssl_openssl.so: FAILED to enable SSL on port %ld: %s. Maybe it's already hooked by the same port on a different IP, or you have an other SSL or similar module loaded?", portno, e.GetReason());
- }
+ /*
+ * 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;
}
}
}
-
- if (!sslports.empty())
- sslports.erase(sslports.end() - 1);
}
- virtual void OnModuleRehash(User* user, const std::string ¶m)
+ void OnModuleRehash(User* user, const std::string ¶m)
{
if (param != "ssl")
return;
+ std::string keyfile;
+ std::string certfile;
+ std::string cafile;
+ std::string dhfile;
OnRehash(user);
- ConfigReader Conf(ServerInstance);
-
- std::string confdir(ServerInstance->ConfigFileName);
- // +1 so we the path ends with a /
- confdir = confdir.substr(0, confdir.find_last_of('/') + 1);
-
- 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 = "ca.pem";
-
- if (certfile.empty())
- certfile = "cert.pem";
+ ConfigTag* conf = ServerInstance->Config->ConfValue("openssl");
- if (keyfile.empty())
- keyfile = "key.pem";
+ 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");
+ if (hash != "sha1" && hash != "md5")
+ throw ModuleException("Unknown hash type " + hash);
+ use_sha = (hash == "sha1");
- if (dhfile.empty())
- dhfile = "dhparams.pem";
-
- // Prepend relative paths with the path to the config directory.
- if ((cafile[0] != '/') && (!ServerInstance->Config->StartsWithWindowsDriveLetter(cafile)))
- cafile = confdir + cafile;
-
- if ((certfile[0] != '/') && (!ServerInstance->Config->StartsWithWindowsDriveLetter(certfile)))
- certfile = confdir + certfile;
+ if (conf->getBool("customcontextoptions"))
+ {
+ SetContextOptions(ctx, ctx_options, "server", conf);
+ SetContextOptions(clictx, clictx_options, "client", conf);
+ }
- if ((keyfile[0] != '/') && (!ServerInstance->Config->StartsWithWindowsDriveLetter(keyfile)))
- keyfile = confdir + keyfile;
+ std::string ciphers = conf->getString("ciphers", "");
- if ((dhfile[0] != '/') && (!ServerInstance->Config->StartsWithWindowsDriveLetter(dhfile)))
- dhfile = confdir + dhfile;
+ if (!ciphers.empty())
+ {
+ ERR_clear_error();
+ if ((!SSL_CTX_set_cipher_list(ctx, ciphers.c_str())) || (!SSL_CTX_set_cipher_list(clictx, ciphers.c_str())))
+ {
+ ServerInstance->Logs->Log("m_ssl_openssl",DEFAULT, "m_ssl_openssl.so: Can't set cipher list to %s.", ciphers.c_str());
+ ERR_print_errors_cb(error_callback, this);
+ }
+ }
/* Load our keys and certificates
* NOTE: OpenSSL's error logging API sucks, don't blame us for this clusterfuck.
*/
+ ERR_clear_error();
if ((!SSL_CTX_use_certificate_chain_file(ctx, certfile.c_str())) || (!SSL_CTX_use_certificate_chain_file(clictx, certfile.c_str())))
{
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);
}
+ ERR_clear_error();
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)))
{
ServerInstance->Logs->Log("m_ssl_openssl",DEFAULT, "m_ssl_openssl.so: Can't read key file %s. %s", keyfile.c_str(), strerror(errno));
}
/* Load the CAs we trust*/
+ ERR_clear_error();
if (((!SSL_CTX_load_verify_locations(ctx, cafile.c_str(), 0))) || (!SSL_CTX_load_verify_locations(clictx, cafile.c_str(), 0)))
{
- ServerInstance->Logs->Log("m_ssl_openssl",DEFAULT, "m_ssl_openssl.so: Can't read CA list from %s. %s", cafile.c_str(), strerror(errno));
+ ServerInstance->Logs->Log("m_ssl_openssl",DEFAULT, "m_ssl_openssl.so: 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);
}
+#ifdef _WIN32
+ BIO* dhpfile = BIO_new_file(dhfile.c_str(), "r");
+#else
FILE* dhpfile = fopen(dhfile.c_str(), "r");
+#endif
DH* ret;
if (dhpfile == NULL)
}
else
{
+#ifdef _WIN32
+ ret = PEM_read_bio_DHparams(dhpfile, NULL, NULL, NULL);
+ BIO_free(dhpfile);
+#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))
+#endif
+
+ ERR_clear_error();
+ if (ret)
{
- 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);
+ 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);
+ }
+ DH_free(ret);
+ }
+ else
+ {
+ ServerInstance->Logs->Log("m_ssl_openssl", DEFAULT, "m_ssl_openssl.so: Couldn't set DH parameters %s.", dhfile.c_str());
}
}
+#ifndef _WIN32
fclose(dhpfile);
+#endif
+
+#ifdef INSPIRCD_OPENSSL_ENABLE_ECDH
+ SetupECDH(conf);
+#endif
}
- virtual void On005Numeric(std::string &output)
+ void On005Numeric(std::string &output)
{
- output.append(" SSL=" + sslports);
+ if (!sslports.empty())
+ output.append(" SSL=" + sslports);
}
- virtual ~ModuleSSLOpenSSL()
+ ~ModuleSSLOpenSSL()
{
SSL_CTX_free(ctx);
SSL_CTX_free(clictx);
- ServerInstance->Modules->UnpublishInterface("BufferedSocketHook", this);
delete[] sessions;
}
- virtual void OnCleanup(int target_type, void* item)
+ void OnUserConnect(LocalUser* user)
{
- if (target_type == TYPE_USER)
+ if (user->eh.GetIOHook() == this)
{
- User* user = (User*)item;
-
- if (user->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");
- user->DelIOHook();
- }
- if (user->GetExt("ssl_cert", dummy))
+ if (sessions[user->eh.GetFd()].sess)
{
- ssl_cert* tofree;
- user->GetExt("ssl_cert", tofree);
- delete tofree;
- user->Shrink("ssl_cert");
+ if (!sessions[user->eh.GetFd()].cert->fingerprint.empty())
+ user->WriteServ("NOTICE %s :*** You are connected using SSL cipher \"%s\""
+ " and your SSL fingerprint is %s", user->nick.c_str(), SSL_get_cipher(sessions[user->eh.GetFd()].sess), sessions[user->eh.GetFd()].cert->fingerprint.c_str());
+ else
+ user->WriteServ("NOTICE %s :*** You are connected using SSL cipher \"%s\"", user->nick.c_str(), SSL_get_cipher(sessions[user->eh.GetFd()].sess));
}
}
}
- virtual void OnUnloadModule(Module* mod, const std::string &name)
+ void OnCleanup(int target_type, void* item)
{
- if (mod == this)
+ if (target_type == TYPE_USER)
{
- for(unsigned int i = 0; i < listenports.size(); i++)
+ LocalUser* user = IS_LOCAL((User*)item);
+
+ if (user && user->eh.GetIOHook() == this)
{
- for (size_t j = 0; j < ServerInstance->Config->ports.size(); j++)
- if (listenports[i] == (ServerInstance->Config->ports[j]->GetIP()+":"+ConvToStr(ServerInstance->Config->ports[j]->GetPort())))
- ServerInstance->Config->ports[j]->SetDescription("plaintext");
+ // 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");
}
}
}
- virtual Version GetVersion()
+ Version GetVersion()
{
- return Version("$Id$", VF_VENDOR, API_VERSION);
+ return Version("Provides SSL support for clients", VF_VENDOR);
}
-
- virtual const char* OnRequest(Request* request)
+ void OnRequest(Request& request)
{
- ISHRequest* ISR = (ISHRequest*)request;
- if (strcmp("IS_NAME", request->GetId()) == 0)
- {
- return "openssl";
- }
- else if (strcmp("IS_HOOK", request->GetId()) == 0)
- {
- const char* ret = "OK";
- try
- {
- ret = ISR->Sock->AddIOHook((Module*)this) ? "OK" : NULL;
- }
- catch (ModuleException &e)
- {
- return NULL;
- }
-
- return ret;
- }
- else if (strcmp("IS_UNHOOK", request->GetId()) == 0)
- {
- return ISR->Sock->DelIOHook() ? "OK" : NULL;
- }
- else if (strcmp("IS_HSDONE", request->GetId()) == 0)
+ if (strcmp("GET_SSL_CERT", request.id) == 0)
{
- if (ISR->Sock->GetFd() < 0)
- return "OK";
+ SocketCertificateRequest& req = static_cast<SocketCertificateRequest&>(request);
+ int fd = req.sock->GetFd();
+ issl_session* session = &sessions[fd];
- issl_session* session = &sessions[ISR->Sock->GetFd()];
- return (session->status == ISSL_HANDSHAKING) ? NULL : "OK";
+ req.cert = session->cert;
}
- else if (strcmp("IS_ATTACH", request->GetId()) == 0)
+ else if (!strcmp("GET_RAW_SSL_SESSION", request.id))
{
- issl_session* session = &sessions[ISR->Sock->GetFd()];
- if (session->sess)
- {
- VerifyCertificate(session, (BufferedSocket*)ISR->Sock);
- return "OK";
- }
+ SSLRawSessionRequest& req = static_cast<SSLRawSessionRequest&>(request);
+ if ((req.fd >= 0) && (req.fd < ServerInstance->SE->GetMaxFds()))
+ req.data = reinterpret_cast<void*>(sessions[req.fd].sess);
}
- return NULL;
}
-
- virtual void OnRawSocketAccept(int fd, const std::string &ip, int localport)
+ void OnStreamSocketAccept(StreamSocket* user, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server)
{
- /* Are there any possibilities of an out of range fd? Hope not, but lets be paranoid */
- if ((fd < 0) || (fd > ServerInstance->SE->GetMaxFds() - 1))
- return;
+ int fd = user->GetFd();
issl_session* session = &sessions[fd];
- session->fd = fd;
- session->inbuf = new char[inbufsize];
- session->inbufoffset = 0;
session->sess = SSL_new(ctx);
session->status = ISSL_NONE;
session->outbound = false;
+ session->data_to_write = false;
if (session->sess == NULL)
return;
return;
}
- Handshake(session);
+ Handshake(user, session);
}
- virtual void OnRawSocketConnect(int fd)
+ void OnStreamSocketConnect(StreamSocket* user)
{
+ int fd = user->GetFd();
/* Are there any possibilities of an out of range fd? Hope not, but lets be paranoid */
if ((fd < 0) || (fd > ServerInstance->SE->GetMaxFds() -1))
return;
issl_session* session = &sessions[fd];
- session->fd = fd;
- session->inbuf = new char[inbufsize];
- session->inbufoffset = 0;
session->sess = SSL_new(clictx);
session->status = ISSL_NONE;
session->outbound = true;
+ session->data_to_write = false;
if (session->sess == NULL)
return;
return;
}
- Handshake(session);
+ Handshake(user, session);
}
- virtual void OnRawSocketClose(int fd)
+ void OnStreamSocketClose(StreamSocket* user)
{
+ int fd = user->GetFd();
/* Are there any possibilities of an out of range fd? Hope not, but lets be paranoid */
if ((fd < 0) || (fd > ServerInstance->SE->GetMaxFds() - 1))
return;
CloseSession(&sessions[fd]);
-
- EventHandler* user = ServerInstance->SE->GetRef(fd);
-
- if ((user) && (user->GetExt("ssl_cert", dummy)))
- {
- ssl_cert* tofree;
- user->GetExt("ssl_cert", tofree);
- delete tofree;
- user->Shrink("ssl_cert");
- }
}
- virtual int OnRawSocketRead(int fd, char* buffer, unsigned int count, int &readresult)
+ int OnStreamSocketRead(StreamSocket* user, std::string& recvq)
{
+ int fd = user->GetFd();
/* Are there any possibilities of an out of range fd? Hope not, but lets be paranoid */
if ((fd < 0) || (fd > ServerInstance->SE->GetMaxFds() - 1))
- return 0;
+ return -1;
issl_session* session = &sessions[fd];
if (!session->sess)
{
- readresult = 0;
CloseSession(session);
- return 1;
+ return -1;
}
if (session->status == ISSL_HANDSHAKING)
{
- if (session->rstat == ISSL_READ || session->wstat == ISSL_READ)
+ // The handshake isn't finished and it wants to read, try to finish it.
+ if (!Handshake(user, session))
{
- // The handshake isn't finished and it wants to read, try to finish it.
- if (!Handshake(session))
- {
- // Couldn't resume handshake.
- errno = session->status == ISSL_NONE ? EIO : EAGAIN;
+ // Couldn't resume handshake.
+ if (session->status == ISSL_NONE)
return -1;
- }
- }
- else
- {
- errno = EAGAIN;
- return -1;
+ return 0;
}
}
if (session->status == ISSL_OPEN)
{
- if (session->wstat == ISSL_READ)
+ ERR_clear_error();
+ char* buffer = ServerInstance->GetReadBuffer();
+ size_t bufsiz = ServerInstance->Config->NetBufferSize;
+ int ret = SSL_read(session->sess, buffer, bufsiz);
+
+#ifdef INSPIRCD_OPENSSL_ENABLE_RENEGO_DETECTION
+ if (!CheckRenego(user, session))
+ return -1;
+#endif
+
+ if (ret > 0)
{
- if(DoWrite(session) == 0)
- return 0;
+ recvq.append(buffer, ret);
+
+ int mask = 0;
+ // Schedule a read if there is still data in the OpenSSL buffer
+ if (SSL_pending(session->sess) > 0)
+ mask |= FD_ADD_TRIAL_READ;
+ if (session->data_to_write)
+ mask |= FD_WANT_POLL_READ | FD_WANT_SINGLE_WRITE;
+ if (mask != 0)
+ ServerInstance->SE->ChangeEventMask(user, mask);
+ return 1;
}
-
- if (session->rstat == ISSL_READ)
+ else if (ret == 0)
{
- int ret = DoRead(session);
+ // Client closed connection.
+ CloseSession(session);
+ user->SetError("Connection closed");
+ return -1;
+ }
+ else if (ret < 0)
+ {
+ int err = SSL_get_error(session->sess, ret);
- if (ret > 0)
+ if (err == SSL_ERROR_WANT_READ)
+ {
+ ServerInstance->SE->ChangeEventMask(user, FD_WANT_POLL_READ);
+ return 0;
+ }
+ else if (err == SSL_ERROR_WANT_WRITE)
+ {
+ ServerInstance->SE->ChangeEventMask(user, FD_WANT_NO_READ | FD_WANT_SINGLE_WRITE);
+ return 0;
+ }
+ else
{
- if (count <= session->inbufoffset)
- {
- memcpy(buffer, session->inbuf, count);
- // Move the stuff left in inbuf to the beginning of it
- memmove(session->inbuf, session->inbuf + count, (session->inbufoffset - count));
- // Now we need to set session->inbufoffset to the amount of data still waiting to be handed to insp.
- session->inbufoffset -= count;
- // Insp uses readresult as the count of how much data there is in buffer, so:
- readresult = count;
- }
- else
- {
- // There's not as much in the inbuf as there is space in the buffer, so just copy the whole thing.
- memcpy(buffer, session->inbuf, session->inbufoffset);
-
- readresult = session->inbufoffset;
- // Zero the offset, as there's nothing there..
- session->inbufoffset = 0;
- }
- return 1;
+ CloseSession(session);
+ return -1;
}
- return ret;
}
}
- return -1;
+ return 0;
}
- virtual int OnRawSocketWrite(int fd, const char* buffer, int count)
+ int OnStreamSocketWrite(StreamSocket* user, std::string& buffer)
{
- /* Are there any possibilities of an out of range fd? Hope not, but lets be paranoid */
- if ((fd < 0) || (fd > ServerInstance->SE->GetMaxFds() - 1))
- return 0;
+ int fd = user->GetFd();
- errno = EAGAIN;
issl_session* session = &sessions[fd];
if (!session->sess)
return -1;
}
- session->outbuf.append(buffer, count);
- MakePollWrite(session);
+ session->data_to_write = true;
if (session->status == ISSL_HANDSHAKING)
{
- // The handshake isn't finished, try to finish it.
- if (session->rstat == ISSL_WRITE || session->wstat == ISSL_WRITE)
+ if (!Handshake(user, session))
{
- if (!Handshake(session))
- {
- // Couldn't resume handshake.
- errno = session->status == ISSL_NONE ? EIO : EAGAIN;
+ // Couldn't resume handshake.
+ if (session->status == ISSL_NONE)
return -1;
- }
+ return 0;
}
}
if (session->status == ISSL_OPEN)
{
- if (session->rstat == ISSL_WRITE)
- {
- DoRead(session);
- }
-
- if (session->wstat == ISSL_WRITE)
- {
- return DoWrite(session);
- }
- }
-
- return 1;
- }
-
- int DoWrite(issl_session* session)
- {
- if (!session->outbuf.size())
- return -1;
-
- int ret = SSL_write(session->sess, session->outbuf.data(), session->outbuf.size());
-
- if (ret == 0)
- {
- CloseSession(session);
- return 0;
- }
- else if (ret < 0)
- {
- int err = SSL_get_error(session->sess, ret);
+ ERR_clear_error();
+ int ret = SSL_write(session->sess, buffer.data(), buffer.size());
- if (err == SSL_ERROR_WANT_WRITE)
- {
- session->wstat = ISSL_WRITE;
+#ifdef INSPIRCD_OPENSSL_ENABLE_RENEGO_DETECTION
+ if (!CheckRenego(user, session))
return -1;
- }
- else if (err == SSL_ERROR_WANT_READ)
- {
- session->wstat = ISSL_READ;
- return -1;
- }
- else
- {
- CloseSession(session);
- return 0;
- }
- }
- else
- {
- session->outbuf = session->outbuf.substr(ret);
- return ret;
- }
- }
-
- int DoRead(issl_session* session)
- {
- // Is this right? Not sure if the unencrypted data is garaunteed to be the same length.
- // Read into the inbuffer, offset from the beginning by the amount of data we have that insp hasn't taken yet.
-
- int ret = SSL_read(session->sess, session->inbuf + session->inbufoffset, inbufsize - session->inbufoffset);
-
- if (ret == 0)
- {
- // Client closed connection.
- CloseSession(session);
- return 0;
- }
- else if (ret < 0)
- {
- int err = SSL_get_error(session->sess, ret);
+#endif
- if (err == SSL_ERROR_WANT_READ)
+ if (ret == (int)buffer.length())
{
- session->rstat = ISSL_READ;
- return -1;
+ session->data_to_write = false;
+ ServerInstance->SE->ChangeEventMask(user, FD_WANT_POLL_READ | FD_WANT_NO_WRITE);
+ return 1;
}
- else if (err == SSL_ERROR_WANT_WRITE)
+ else if (ret > 0)
{
- session->rstat = ISSL_WRITE;
- MakePollWrite(session);
- return -1;
+ buffer = buffer.substr(ret);
+ ServerInstance->SE->ChangeEventMask(user, FD_WANT_SINGLE_WRITE);
+ return 0;
}
- else
+ else if (ret == 0)
{
CloseSession(session);
- return 0;
+ return -1;
}
- }
- else
- {
- // Read successfully 'ret' bytes into inbuf + inbufoffset
- // There are 'ret' + 'inbufoffset' bytes of data in 'inbuf'
- // 'buffer' is 'count' long
-
- session->inbufoffset += ret;
-
- return ret;
- }
- }
-
- // :kenny.chatspike.net 320 Om Epy|AFK :is a Secure Connection
- virtual void OnWhois(User* source, User* dest)
- {
- if (!clientactive)
- return;
-
- // Bugfix, only send this numeric for *our* SSL users
- if (dest->GetExt("ssl", dummy))
- {
- ServerInstance->SendWhoisLine(source, dest, 320, "%s %s :is using a secure connection", source->nick.c_str(), dest->nick.c_str());
- }
- }
-
- virtual void OnSyncUserMetaData(User* user, Module* proto, void* opaque, const std::string &extname, bool displayable)
- {
- // check if the linking module wants to know about OUR metadata
- if (extname == "ssl")
- {
- // check if this user has an swhois field to send
- if(user->GetExt(extname, dummy))
+ else if (ret < 0)
{
- // call this function in the linking module, let it format the data how it
- // sees fit, and send it on its way. We dont need or want to know how.
- proto->ProtoSendMetaData(opaque, TYPE_USER, user, extname, displayable ? "Enabled" : "ON");
- }
- }
- }
+ int err = SSL_get_error(session->sess, ret);
- virtual void OnDecodeMetaData(int target_type, void* target, const std::string &extname, const std::string &extdata)
- {
- // check if its our metadata key, and its associated with a user
- if ((target_type == TYPE_USER) && (extname == "ssl"))
- {
- User* dest = (User*)target;
- // if they dont already have an ssl flag, accept the remote server's
- if (!dest->GetExt(extname, dummy))
- {
- dest->Extend(extname, "ON");
+ if (err == SSL_ERROR_WANT_WRITE)
+ {
+ ServerInstance->SE->ChangeEventMask(user, FD_WANT_SINGLE_WRITE);
+ return 0;
+ }
+ else if (err == SSL_ERROR_WANT_READ)
+ {
+ ServerInstance->SE->ChangeEventMask(user, FD_WANT_POLL_READ);
+ return 0;
+ }
+ else
+ {
+ CloseSession(session);
+ return -1;
+ }
}
}
+ return 0;
}
- bool Handshake(issl_session* session)
+ bool Handshake(StreamSocket* user, issl_session* session)
{
int ret;
+ ERR_clear_error();
if (session->outbound)
ret = SSL_connect(session->sess);
else
if (err == SSL_ERROR_WANT_READ)
{
- session->rstat = ISSL_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)
{
- session->wstat = ISSL_WRITE;
+ ServerInstance->SE->ChangeEventMask(user, FD_WANT_NO_READ | FD_WANT_SINGLE_WRITE);
session->status = ISSL_HANDSHAKING;
- MakePollWrite(session);
return true;
}
else
else if (ret > 0)
{
// Handshake complete.
- // This will do for setting the ssl flag...it could be done earlier if it's needed. But this seems neater.
- EventHandler *u = ServerInstance->SE->GetRef(session->fd);
- if (u)
- {
- if (!u->GetExt("ssl", dummy))
- u->Extend("ssl", "ON");
- }
+ VerifyCertificate(session, user);
session->status = ISSL_OPEN;
- MakePollWrite(session);
+ ServerInstance->SE->ChangeEventMask(user, FD_WANT_POLL_READ | FD_WANT_NO_WRITE | FD_ADD_TRIAL_WRITE);
return true;
}
else if (ret == 0)
{
CloseSession(session);
- return true;
- }
-
- return true;
- }
-
- virtual void OnPostConnect(User* user)
- {
- // This occurs AFTER OnUserConnect so we can be sure the
- // protocol module has propagated the NICK message.
- if ((user->GetIOHook() == this) && (IS_LOCAL(user)))
- {
- // Tell whatever protocol module we're using that we need to inform other servers of this metadata NOW.
- ServerInstance->PI->SendMetaData(user, TYPE_USER, "ssl", "on");
-
- VerifyCertificate(&sessions[user->GetFd()], user);
- if (sessions[user->GetFd()].sess)
- user->WriteServ("NOTICE %s :*** You are connected using SSL cipher \"%s\"", user->nick.c_str(), SSL_get_cipher(sessions[user->GetFd()].sess));
- }
- }
-
- void MakePollWrite(issl_session* session)
- {
- //OnRawSocketWrite(session->fd, NULL, 0);
- EventHandler* eh = ServerInstance->SE->GetRef(session->fd);
- if (eh)
- {
- ServerInstance->SE->WantWrite(eh);
- }
- }
-
- virtual void OnBufferFlushed(User* user)
- {
- if (user->GetIOHook() == this)
- {
- issl_session* session = &sessions[user->GetFd()];
- if (session && session->outbuf.size())
- OnRawSocketWrite(user->GetFd(), NULL, 0);
}
+ return false;
}
void CloseSession(issl_session* session)
SSL_free(session->sess);
}
- if (session->inbuf)
- {
- delete[] session->inbuf;
- }
-
- session->outbuf.clear();
- session->inbuf = NULL;
session->sess = NULL;
session->status = ISSL_NONE;
- errno = EIO;
+ session->cert = NULL;
}
- void VerifyCertificate(issl_session* session, Extensible* user)
+ void VerifyCertificate(issl_session* session, StreamSocket* user)
{
if (!session->sess || !user)
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();
-
- user->Extend("ssl_cert",certinfo);
+ const EVP_MD *digest = use_sha ? EVP_sha1() : EVP_md5();
cert = SSL_get_peer_certificate((SSL*)session->sess);
if (!cert)
{
- certinfo->data.insert(std::make_pair("error","Could not get peer certificate: "+std::string(get_error())));
+ certinfo->error = "Could not get peer certificate: "+std::string(get_error());
return;
}
- certinfo->data.insert(std::make_pair("invalid", SSL_get_verify_result(session->sess) != X509_V_OK ? ConvToStr(1) : ConvToStr(0)));
+ certinfo->invalid = (SSL_get_verify_result(session->sess) != X509_V_OK);
- if (SelfSigned)
+ if (!SelfSigned)
{
- certinfo->data.insert(std::make_pair("unknownsigner",ConvToStr(0)));
- certinfo->data.insert(std::make_pair("trusted",ConvToStr(1)));
+ certinfo->unknownsigner = false;
+ certinfo->trusted = true;
}
else
{
- certinfo->data.insert(std::make_pair("unknownsigner",ConvToStr(1)));
- certinfo->data.insert(std::make_pair("trusted",ConvToStr(0)));
+ certinfo->unknownsigner = true;
+ certinfo->trusted = false;
}
- certinfo->data.insert(std::make_pair("dn",std::string(X509_NAME_oneline(X509_get_subject_name(cert),0,0))));
- certinfo->data.insert(std::make_pair("issuer",std::string(X509_NAME_oneline(X509_get_issuer_name(cert),0,0))));
+ char buf[512];
+ X509_NAME_oneline(X509_get_subject_name(cert), buf, sizeof(buf));
+ certinfo->dn = buf;
+ // Make sure there are no chars in the string that we consider invalid
+ if (certinfo->dn.find_first_of("\r\n") != std::string::npos)
+ certinfo->dn.clear();
+
+ X509_NAME_oneline(X509_get_issuer_name(cert), buf, sizeof(buf));
+ certinfo->issuer = buf;
+ if (certinfo->issuer.find_first_of("\r\n") != std::string::npos)
+ certinfo->issuer.clear();
if (!X509_digest(cert, digest, md, &n))
{
- certinfo->data.insert(std::make_pair("error","Out of memory generating fingerprint"));
+ certinfo->error = "Out of memory generating fingerprint";
}
else
{
- certinfo->data.insert(std::make_pair("fingerprint",irc::hex(md, n)));
+ certinfo->fingerprint = irc::hex(md, n);
}
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))
{
- certinfo->data.insert(std::make_pair("error","Not activated, or expired certificate"));
+ certinfo->error = "Not activated, or expired certificate";
}
X509_free(cert);
}
-
- void Prioritize()
- {
- Module* server = ServerInstance->Modules->Find("m_spanningtree.so");
- ServerInstance->Modules->SetPriority(this, I_OnPostConnect, PRIORITY_AFTER, &server);
- }
-
};
static int error_callback(const char *str, size_t len, void *u)
{
- ModuleSSLOpenSSL* mssl = (ModuleSSLOpenSSL*)u;
- mssl->PublicInstance->Logs->Log("m_ssl_openssl",DEFAULT, "SSL error: " + std::string(str, len - 1));
+ ServerInstance->Logs->Log("m_ssl_openssl",DEFAULT, "SSL error: " + std::string(str, len - 1));
//
// XXX: Remove this line, it causes valgrind warnings...
projects / user / henk / code / inspircd.git / blobdiff