-/* +------------------------------------+
- * | 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 John Brooks <john.brooks@dereferenced.net>
+ * Copyright (C) 2006-2008 Craig Edwards <craigedwards@brainbox.cc>
+ * 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/>.
*/
+
#include "inspircd.h"
#include <gnutls/gnutls.h>
#include <gnutls/x509.h>
#include "ssl.h"
#include "m_cap.h"
-#ifdef WINDOWS
-#pragma comment(lib, "libgnutls-13.lib")
+#ifdef _WIN32
+# pragma comment(lib, "libgnutls-30.lib")
#endif
/* $ModDesc: Provides SSL support for clients */
-/* $CompileFlags: pkgconfincludes("gnutls","/gnutls/gnutls.h","") */
-/* $LinkerFlags: rpath("pkg-config --libs gnutls") pkgconflibs("gnutls","/libgnutls.so","-lgnutls") */
-/* $ModDep: transport.h */
-/* $CopyInstall: conf/key.pem $(CONPATH) */
-/* $CopyInstall: conf/cert.pem $(CONPATH) */
+/* $CompileFlags: pkgconfincludes("gnutls","/gnutls/gnutls.h","") iflt("pkg-config --modversion gnutls","2.12") exec("libgcrypt-config --cflags") */
+/* $LinkerFlags: rpath("pkg-config --libs gnutls") pkgconflibs("gnutls","/libgnutls.so","-lgnutls") iflt("pkg-config --modversion gnutls","2.12") exec("libgcrypt-config --libs") */
+/* $NoPedantic */
+
+#ifndef GNUTLS_VERSION_MAJOR
+#define GNUTLS_VERSION_MAJOR LIBGNUTLS_VERSION_MAJOR
+#define GNUTLS_VERSION_MINOR LIBGNUTLS_VERSION_MINOR
+#define GNUTLS_VERSION_PATCH LIBGNUTLS_VERSION_PATCH
+#endif
+
+// These don't exist in older GnuTLS versions
+#if ((GNUTLS_VERSION_MAJOR > 2) || (GNUTLS_VERSION_MAJOR == 2 && GNUTLS_VERSION_MINOR > 1) || (GNUTLS_VERSION_MAJOR == 2 && GNUTLS_VERSION_MINOR == 1 && GNUTLS_VERSION_PATCH >= 7))
+#define GNUTLS_NEW_PRIO_API
+#endif
+
+#if(GNUTLS_VERSION_MAJOR < 2)
+typedef gnutls_certificate_credentials_t gnutls_certificate_credentials;
+typedef gnutls_dh_params_t gnutls_dh_params;
+#endif
+
+#if (GNUTLS_VERSION_MAJOR > 2 || (GNUTLS_VERSION_MAJOR == 2 && GNUTLS_VERSION_MINOR >= 12))
+# define GNUTLS_HAS_RND
+# include <gnutls/crypto.h>
+#else
+# include <gcrypt.h>
+#endif
enum issl_status { ISSL_NONE, ISSL_HANDSHAKING_READ, ISSL_HANDSHAKING_WRITE, ISSL_HANDSHAKEN, ISSL_CLOSING, ISSL_CLOSED };
-static gnutls_x509_crt_t x509_cert;
-static gnutls_x509_privkey_t x509_key;
+struct SSLConfig : public refcountbase
+{
+ gnutls_certificate_credentials_t x509_cred;
+ std::vector<gnutls_x509_crt_t> x509_certs;
+ gnutls_x509_privkey_t x509_key;
+ gnutls_dh_params_t dh_params;
+#ifdef GNUTLS_NEW_PRIO_API
+ gnutls_priority_t priority;
+#endif
+
+ SSLConfig()
+ : x509_cred(NULL)
+ , x509_key(NULL)
+ , dh_params(NULL)
+#ifdef GNUTLS_NEW_PRIO_API
+ , priority(NULL)
+#endif
+ {
+ }
+
+ ~SSLConfig()
+ {
+ ServerInstance->Logs->Log("m_ssl_gnutls", DEBUG, "Destroying SSLConfig %p", (void*)this);
+
+ if (x509_cred)
+ gnutls_certificate_free_credentials(x509_cred);
+
+ for (unsigned int i = 0; i < x509_certs.size(); i++)
+ gnutls_x509_crt_deinit(x509_certs[i]);
+
+ if (x509_key)
+ gnutls_x509_privkey_deinit(x509_key);
+
+ if (dh_params)
+ gnutls_dh_params_deinit(dh_params);
+
+#ifdef GNUTLS_NEW_PRIO_API
+ if (priority)
+ gnutls_priority_deinit(priority);
+#endif
+ }
+};
+
+static reference<SSLConfig> currconf;
+
+static SSLConfig* GetSessionConfig(gnutls_session_t session);
+
+#if(GNUTLS_VERSION_MAJOR < 2 || ( GNUTLS_VERSION_MAJOR == 2 && GNUTLS_VERSION_MINOR < 12 ) )
static int cert_callback (gnutls_session_t session, const gnutls_datum_t * req_ca_rdn, int nreqs,
const gnutls_pk_algorithm_t * sign_algos, int sign_algos_length, gnutls_retr_st * st) {
st->type = GNUTLS_CRT_X509;
- st->ncerts = 1;
- st->cert.x509 = &x509_cert;
- st->key.x509 = x509_key;
+#else
+static int cert_callback (gnutls_session_t session, const gnutls_datum_t * req_ca_rdn, int nreqs,
+ const gnutls_pk_algorithm_t * sign_algos, int sign_algos_length, gnutls_retr2_st * st) {
+ st->cert_type = GNUTLS_CRT_X509;
+ st->key_type = GNUTLS_PRIVKEY_X509;
+#endif
+ SSLConfig* conf = GetSessionConfig(session);
+ std::vector<gnutls_x509_crt_t>& x509_certs = conf->x509_certs;
+ st->ncerts = x509_certs.size();
+ st->cert.x509 = &x509_certs[0];
+ st->key.x509 = conf->x509_key;
st->deinit_all = 0;
return 0;
}
-static ssize_t gnutls_pull_wrapper(gnutls_transport_ptr_t user_wrap, void* buffer, size_t size)
-{
- StreamSocket* user = reinterpret_cast<StreamSocket*>(user_wrap);
- if (user->GetEventMask() & FD_READ_WILL_BLOCK)
- {
- errno = EAGAIN;
- return -1;
- }
- int rv = recv(user->GetFd(), buffer, size, 0);
- if (rv < (int)size)
- ServerInstance->SE->ChangeEventMask(user, FD_READ_WILL_BLOCK);
- return rv;
-}
-
-static ssize_t gnutls_push_wrapper(gnutls_transport_ptr_t user_wrap, const void* buffer, size_t size)
+class RandGen : public HandlerBase2<void, char*, size_t>
{
- StreamSocket* user = reinterpret_cast<StreamSocket*>(user_wrap);
- if (user->GetEventMask() & FD_WRITE_WILL_BLOCK)
+ public:
+ RandGen() {}
+ void Call(char* buffer, size_t len)
{
- errno = EAGAIN;
- return -1;
+#ifdef GNUTLS_HAS_RND
+ gnutls_rnd(GNUTLS_RND_RANDOM, buffer, len);
+#else
+ gcry_randomize(buffer, len, GCRY_STRONG_RANDOM);
+#endif
}
- int rv = send(user->GetFd(), buffer, size, 0);
- if (rv < (int)size)
- ServerInstance->SE->ChangeEventMask(user, FD_WRITE_WILL_BLOCK);
- return rv;
-}
+};
/** Represents an SSL user's extra data
*/
class issl_session
{
public:
- issl_session()
- {
- sess = NULL;
- }
-
+ StreamSocket* socket;
gnutls_session_t sess;
issl_status status;
+ reference<ssl_cert> cert;
+ reference<SSLConfig> config;
+
+ issl_session() : socket(NULL), sess(NULL), status(ISSL_NONE) {}
};
-class CommandStartTLS : public Command
+static SSLConfig* GetSessionConfig(gnutls_session_t sess)
+{
+ issl_session* session = reinterpret_cast<issl_session*>(gnutls_transport_get_ptr(sess));
+ return session->config;
+}
+
+class CommandStartTLS : public SplitCommand
{
public:
- CommandStartTLS (Module* mod) : Command(mod, "STARTTLS")
+ bool enabled;
+ CommandStartTLS (Module* mod) : SplitCommand(mod, "STARTTLS")
{
+ enabled = true;
works_before_reg = true;
}
- CmdResult Handle (const std::vector<std::string> ¶meters, User *user)
+ CmdResult HandleLocal(const std::vector<std::string> ¶meters, LocalUser *user)
{
- /* changed from == REG_ALL to catch clients sending STARTTLS
- * after NICK and USER but before OnUserConnect completes and
- * give a proper error message (see bug #645) - dz
- */
- if (user->registered != REG_NONE)
+ if (!enabled)
{
- user->WriteNumeric(691, "%s :STARTTLS is not permitted after client registration has started", user->nick.c_str());
+ user->WriteNumeric(691, "%s :STARTTLS is not enabled", user->nick.c_str());
+ return CMD_FAILURE;
+ }
+
+ if (user->registered == REG_ALL)
+ {
+ user->WriteNumeric(691, "%s :STARTTLS is not permitted after client registration is complete", user->nick.c_str());
}
else
{
- if (!user->GetIOHook())
+ if (!user->eh.GetIOHook())
{
user->WriteNumeric(670, "%s :STARTTLS successful, go ahead with TLS handshake", user->nick.c_str());
- user->AddIOHook(creator);
- creator->OnStreamSocketAccept(user, NULL, NULL);
+ /* We need to flush the write buffer prior to adding the IOHook,
+ * otherwise we'll be sending this line inside the SSL session - which
+ * won't start its handshake until the client gets this line. Currently,
+ * we assume the write will not block here; this is usually safe, as
+ * STARTTLS is sent very early on in the registration phase, where the
+ * user hasn't built up much sendq. Handling a blocked write here would
+ * be very annoying.
+ */
+ user->eh.DoWrite();
+ user->eh.AddIOHook(creator);
+ creator->OnStreamSocketAccept(&user->eh, NULL, NULL);
}
else
user->WriteNumeric(691, "%s :STARTTLS failure", user->nick.c_str());
{
issl_session* sessions;
- gnutls_certificate_credentials x509_cred;
- gnutls_dh_params dh_params;
+ gnutls_digest_algorithm_t hash;
- std::string keyfile;
- std::string certfile;
- std::string cafile;
- std::string crlfile;
std::string sslports;
int dh_bits;
- bool cred_alloc;
-
+ RandGen randhandler;
CommandStartTLS starttls;
GenericCap capHandler;
+ ServiceProvider iohook;
+
+ inline static const char* UnknownIfNULL(const char* str)
+ {
+ return str ? str : "UNKNOWN";
+ }
+
+ static ssize_t gnutls_pull_wrapper(gnutls_transport_ptr_t session_wrap, void* buffer, size_t size)
+ {
+ issl_session* session = reinterpret_cast<issl_session*>(session_wrap);
+ if (session->socket->GetEventMask() & FD_READ_WILL_BLOCK)
+ {
+#ifdef _WIN32
+ gnutls_transport_set_errno(session->sess, EAGAIN);
+#else
+ errno = EAGAIN;
+#endif
+ return -1;
+ }
+
+ int rv = ServerInstance->SE->Recv(session->socket, reinterpret_cast<char *>(buffer), size, 0);
+
+#ifdef _WIN32
+ if (rv < 0)
+ {
+ /* Windows doesn't use errno, but gnutls does, so check SocketEngine::IgnoreError()
+ * and then set errno appropriately.
+ * The gnutls library may also have a different errno variable than us, see
+ * gnutls_transport_set_errno(3).
+ */
+ gnutls_transport_set_errno(session->sess, SocketEngine::IgnoreError() ? EAGAIN : errno);
+ }
+#endif
+
+ if (rv < (int)size)
+ ServerInstance->SE->ChangeEventMask(session->socket, FD_READ_WILL_BLOCK);
+ return rv;
+ }
+
+ static ssize_t gnutls_push_wrapper(gnutls_transport_ptr_t session_wrap, const void* buffer, size_t size)
+ {
+ issl_session* session = reinterpret_cast<issl_session*>(session_wrap);
+ if (session->socket->GetEventMask() & FD_WRITE_WILL_BLOCK)
+ {
+#ifdef _WIN32
+ gnutls_transport_set_errno(session->sess, EAGAIN);
+#else
+ errno = EAGAIN;
+#endif
+ return -1;
+ }
+
+ int rv = ServerInstance->SE->Send(session->socket, reinterpret_cast<const char *>(buffer), size, 0);
+
+#ifdef _WIN32
+ if (rv < 0)
+ {
+ /* Windows doesn't use errno, but gnutls does, so check SocketEngine::IgnoreError()
+ * and then set errno appropriately.
+ * The gnutls library may also have a different errno variable than us, see
+ * gnutls_transport_set_errno(3).
+ */
+ gnutls_transport_set_errno(session->sess, SocketEngine::IgnoreError() ? EAGAIN : errno);
+ }
+#endif
+
+ if (rv < (int)size)
+ ServerInstance->SE->ChangeEventMask(session->socket, FD_WRITE_WILL_BLOCK);
+ return rv;
+ }
+
public:
ModuleSSLGnuTLS()
- : starttls(this), capHandler(this, "tls")
+ : starttls(this), capHandler(this, "tls"), iohook(this, "ssl/gnutls", SERVICE_IOHOOK)
{
- ServerInstance->Modules->PublishInterface("BufferedSocketHook", this);
+#ifndef GNUTLS_HAS_RND
+ gcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0);
+#endif
sessions = new issl_session[ServerInstance->SE->GetMaxFds()];
gnutls_global_init(); // This must be called once in the program
- gnutls_x509_crt_init(&x509_cert);
- gnutls_x509_privkey_init(&x509_key);
+ }
- cred_alloc = false;
- // Needs the flag as it ignores a plain /rehash
- OnModuleRehash(NULL,"ssl");
+ void init()
+ {
+ currconf = new SSLConfig;
+ InitSSLConfig(currconf);
- // Void return, guess we assume success
- gnutls_certificate_set_dh_params(x509_cred, dh_params);
- Implementation eventlist[] = { I_On005Numeric, I_OnRehash, I_OnModuleRehash, I_OnPostConnect,
- I_OnEvent, I_OnHookIO };
+ ServerInstance->GenRandom = &randhandler;
+
+ Implementation eventlist[] = { I_On005Numeric, I_OnRehash, I_OnModuleRehash, I_OnUserConnect,
+ I_OnEvent, I_OnHookIO, I_OnCheckReady };
ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
- ServerInstance->AddCommand(&starttls);
+ ServerInstance->Modules->AddService(iohook);
+ ServerInstance->Modules->AddService(starttls);
}
void OnRehash(User* user)
{
- ConfigReader Conf;
-
sslports.clear();
- for (size_t i = 0; i < ServerInstance->ports.size(); i++)
+ ConfigTag* Conf = ServerInstance->Config->ConfValue("gnutls");
+ starttls.enabled = Conf->getBool("starttls", true);
+
+ if (Conf->getBool("showports", true))
{
- ListenSocket* port = ServerInstance->ports[i];
- if (port->bind_tag->getString("ssl") != "gnutls")
- continue;
+ 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") != "gnutls")
+ continue;
- const std::string& portid = port->bind_desc;
- ServerInstance->Logs->Log("m_ssl_gnutls", DEFAULT, "m_ssl_gnutls.so: Enabling SSL for port %s", portid.c_str());
+ const std::string& portid = port->bind_desc;
+ ServerInstance->Logs->Log("m_ssl_gnutls", DEFAULT, "m_ssl_gnutls.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(";");
+ 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;
+ }
+ }
}
-
- if (!sslports.empty())
- sslports.erase(sslports.end() - 1);
}
void OnModuleRehash(User* user, const std::string ¶m)
if(param != "ssl")
return;
- OnRehash(user);
-
- ConfigReader Conf;
-
- cafile = Conf.ReadValue("gnutls", "cafile", 0);
- crlfile = Conf.ReadValue("gnutls", "crlfile", 0);
- certfile = Conf.ReadValue("gnutls", "certfile", 0);
- keyfile = Conf.ReadValue("gnutls", "keyfile", 0);
- dh_bits = Conf.ReadInteger("gnutls", "dhbits", 0, false);
-
- // Set all the default values needed.
- if (cafile.empty())
- cafile = "conf/ca.pem";
-
- if (crlfile.empty())
- crlfile = "conf/crl.pem";
+ reference<SSLConfig> newconf = new SSLConfig;
+ try
+ {
+ InitSSLConfig(newconf);
+ }
+ catch (ModuleException& ex)
+ {
+ ServerInstance->Logs->Log("m_ssl_gnutls", DEFAULT, "m_ssl_gnutls: Not applying new config. %s", ex.GetReason());
+ return;
+ }
- if (certfile.empty())
- certfile = "conf/cert.pem";
+ ServerInstance->Logs->Log("m_ssl_gnutls", DEFAULT, "m_ssl_gnutls: Applying new config, old config is in use by %d connection(s)", currconf->GetReferenceCount()-1);
+ currconf = newconf;
+ }
- if (keyfile.empty())
- keyfile = "conf/key.pem";
+ void InitSSLConfig(SSLConfig* config)
+ {
+ ServerInstance->Logs->Log("m_ssl_gnutls", DEBUG, "Initializing new SSLConfig %p", (void*)config);
+
+ std::string keyfile;
+ std::string certfile;
+ std::string cafile;
+ std::string crlfile;
+ OnRehash(NULL);
+
+ ConfigTag* Conf = ServerInstance->Config->ConfValue("gnutls");
+
+ cafile = Conf->getString("cafile", CONFIG_PATH "/ca.pem");
+ crlfile = Conf->getString("crlfile", CONFIG_PATH "/crl.pem");
+ certfile = Conf->getString("certfile", CONFIG_PATH "/cert.pem");
+ keyfile = Conf->getString("keyfile", CONFIG_PATH "/key.pem");
+ dh_bits = Conf->getInt("dhbits");
+ std::string hashname = Conf->getString("hash", "md5");
+
+ // The GnuTLS manual states that the gnutls_set_default_priority()
+ // call we used previously when initializing the session is the same
+ // as setting the "NORMAL" priority string.
+ // Thus if the setting below is not in the config we will behave exactly
+ // the same as before, when the priority setting wasn't available.
+ std::string priorities = Conf->getString("priority", "NORMAL");
if((dh_bits != 768) && (dh_bits != 1024) && (dh_bits != 2048) && (dh_bits != 3072) && (dh_bits != 4096))
dh_bits = 1024;
+ if (hashname == "md5")
+ hash = GNUTLS_DIG_MD5;
+ else if (hashname == "sha1")
+ hash = GNUTLS_DIG_SHA1;
+#ifdef INSPIRCD_GNUTLS_ENABLE_SHA256_FINGERPRINT
+ else if (hashname == "sha256")
+ hash = GNUTLS_DIG_SHA256;
+#endif
+ else
+ throw ModuleException("Unknown hash type " + hashname);
+
+
int ret;
- if (cred_alloc)
+ gnutls_certificate_credentials_t& x509_cred = config->x509_cred;
+
+ ret = gnutls_certificate_allocate_credentials(&x509_cred);
+ if (ret < 0)
{
- // Deallocate the old credentials
- gnutls_dh_params_deinit(dh_params);
- gnutls_certificate_free_credentials(x509_cred);
+ // Set to NULL because we can't be sure what value is in it and we must not try to
+ // deallocate it in case of an error
+ x509_cred = NULL;
+ throw ModuleException("Failed to allocate certificate credentials: " + std::string(gnutls_strerror(ret)));
}
- else
- cred_alloc = true;
-
- if((ret = gnutls_certificate_allocate_credentials(&x509_cred)) < 0)
- ServerInstance->Logs->Log("m_ssl_gnutls",DEBUG, "m_ssl_gnutls.so: Failed to allocate certificate credentials: %s", gnutls_strerror(ret));
if((ret =gnutls_certificate_set_x509_trust_file(x509_cred, cafile.c_str(), GNUTLS_X509_FMT_PEM)) < 0)
ServerInstance->Logs->Log("m_ssl_gnutls",DEBUG, "m_ssl_gnutls.so: Failed to set X.509 trust file '%s': %s", cafile.c_str(), gnutls_strerror(ret));
reader.LoadFile(certfile);
std::string cert_string = reader.Contents();
- gnutls_datum_t cert_datum = { (unsigned char*)cert_string.data(), cert_string.length() };
+ gnutls_datum_t cert_datum = { (unsigned char*)cert_string.data(), static_cast<unsigned int>(cert_string.length()) };
reader.LoadFile(keyfile);
std::string key_string = reader.Contents();
- gnutls_datum_t key_datum = { (unsigned char*)key_string.data(), key_string.length() };
+ gnutls_datum_t key_datum = { (unsigned char*)key_string.data(), static_cast<unsigned int>(key_string.length()) };
+
+ std::vector<gnutls_x509_crt_t>& x509_certs = config->x509_certs;
// If this fails, no SSL port will work. At all. So, do the smart thing - throw a ModuleException
- if((ret = gnutls_x509_crt_import(x509_cert, &cert_datum, GNUTLS_X509_FMT_PEM)) < 0)
- throw ModuleException("Unable to load GnuTLS server certificate (" + certfile + "): " + std::string(gnutls_strerror(ret)));
+ unsigned int certcount = 3;
+ x509_certs.resize(certcount);
+ ret = gnutls_x509_crt_list_import(&x509_certs[0], &certcount, &cert_datum, GNUTLS_X509_FMT_PEM, GNUTLS_X509_CRT_LIST_IMPORT_FAIL_IF_EXCEED);
+ if (ret == GNUTLS_E_SHORT_MEMORY_BUFFER)
+ {
+ // the buffer wasn't big enough to hold all certs but gnutls updated certcount to the number of available certs, try again with a bigger buffer
+ x509_certs.resize(certcount);
+ ret = gnutls_x509_crt_list_import(&x509_certs[0], &certcount, &cert_datum, GNUTLS_X509_FMT_PEM, GNUTLS_X509_CRT_LIST_IMPORT_FAIL_IF_EXCEED);
+ }
+
+ if (ret <= 0)
+ {
+ // clear the vector so we won't call gnutls_x509_crt_deinit() on the (uninited) certs later
+ x509_certs.clear();
+ throw ModuleException("Unable to load GnuTLS server certificate (" + certfile + "): " + ((ret < 0) ? (std::string(gnutls_strerror(ret))) : "No certs could be read"));
+ }
+ x509_certs.resize(ret);
+
+ gnutls_x509_privkey_t& x509_key = config->x509_key;
+ if (gnutls_x509_privkey_init(&x509_key) < 0)
+ {
+ // Make sure the destructor does not try to deallocate this, see above
+ x509_key = NULL;
+ throw ModuleException("Unable to initialize private key");
+ }
if((ret = gnutls_x509_privkey_import(x509_key, &key_datum, GNUTLS_X509_FMT_PEM)) < 0)
throw ModuleException("Unable to load GnuTLS server private key (" + keyfile + "): " + std::string(gnutls_strerror(ret)));
- if((ret = gnutls_certificate_set_x509_key(x509_cred, &x509_cert, 1, x509_key)) < 0)
+ if((ret = gnutls_certificate_set_x509_key(x509_cred, &x509_certs[0], certcount, x509_key)) < 0)
throw ModuleException("Unable to set GnuTLS cert/key pair: " + std::string(gnutls_strerror(ret)));
+ #ifdef GNUTLS_NEW_PRIO_API
+ // Try to set the priorities for ciphers, kex methods etc. to the user supplied string
+ // If the user did not supply anything then the string is already set to "NORMAL"
+ const char* priocstr = priorities.c_str();
+ const char* prioerror;
+
+ gnutls_priority_t& priority = config->priority;
+ if ((ret = gnutls_priority_init(&priority, priocstr, &prioerror)) < 0)
+ {
+ // gnutls did not understand the user supplied string, log and fall back to the default priorities
+ ServerInstance->Logs->Log("m_ssl_gnutls",DEFAULT, "m_ssl_gnutls.so: Failed to set priorities to \"%s\": %s Syntax error at position %u, falling back to default (NORMAL)", priorities.c_str(), gnutls_strerror(ret), (unsigned int) (prioerror - priocstr));
+ gnutls_priority_init(&priority, "NORMAL", NULL);
+ }
+
+ #else
+ if (priorities != "NORMAL")
+ ServerInstance->Logs->Log("m_ssl_gnutls",DEFAULT, "m_ssl_gnutls.so: You've set <gnutls:priority> to a value other than the default, but this is only supported with GnuTLS v2.1.7 or newer. Your GnuTLS version is older than that so the option will have no effect.");
+ #endif
+
+ #if(GNUTLS_VERSION_MAJOR < 2 || ( GNUTLS_VERSION_MAJOR == 2 && GNUTLS_VERSION_MINOR < 12 ) )
gnutls_certificate_client_set_retrieve_function (x509_cred, cert_callback);
+ #else
+ gnutls_certificate_set_retrieve_function (x509_cred, cert_callback);
+ #endif
- if((ret = gnutls_dh_params_init(&dh_params)) < 0)
+ gnutls_dh_params_t& dh_params = config->dh_params;
+ ret = gnutls_dh_params_init(&dh_params);
+ if (ret < 0)
+ {
+ // Make sure the destructor does not try to deallocate this, see above
+ dh_params = NULL;
ServerInstance->Logs->Log("m_ssl_gnutls",DEFAULT, "m_ssl_gnutls.so: Failed to initialise DH parameters: %s", gnutls_strerror(ret));
+ return;
+ }
+
+ std::string dhfile = Conf->getString("dhfile");
+ if (!dhfile.empty())
+ {
+ // Try to load DH params from file
+ reader.LoadFile(dhfile);
+ std::string dhstring = reader.Contents();
+ gnutls_datum_t dh_datum = { (unsigned char*)dhstring.data(), static_cast<unsigned int>(dhstring.length()) };
+
+ if ((ret = gnutls_dh_params_import_pkcs3(dh_params, &dh_datum, GNUTLS_X509_FMT_PEM)) < 0)
+ {
+ // File unreadable or GnuTLS was unhappy with the contents, generate the DH primes now
+ ServerInstance->Logs->Log("m_ssl_gnutls", DEFAULT, "m_ssl_gnutls.so: Generating DH parameters because I failed to load them from file '%s': %s", dhfile.c_str(), gnutls_strerror(ret));
+ GenerateDHParams(dh_params);
+ }
+ }
+ else
+ {
+ GenerateDHParams(dh_params);
+ }
- // This may be on a large (once a day or week) timer eventually.
- GenerateDHParams();
+ gnutls_certificate_set_dh_params(x509_cred, dh_params);
}
- void GenerateDHParams()
+ void GenerateDHParams(gnutls_dh_params_t dh_params)
{
// Generate Diffie Hellman parameters - for use with DHE
// kx algorithms. These should be discarded and regenerated
~ModuleSSLGnuTLS()
{
- gnutls_x509_crt_deinit(x509_cert);
- gnutls_x509_privkey_deinit(x509_key);
- gnutls_dh_params_deinit(dh_params);
- gnutls_certificate_free_credentials(x509_cred);
+ currconf = NULL;
+
gnutls_global_deinit();
- ServerInstance->Modules->UnpublishInterface("BufferedSocketHook", this);
delete[] sessions;
+ ServerInstance->GenRandom = &ServerInstance->HandleGenRandom;
}
void OnCleanup(int target_type, void* item)
{
if(target_type == TYPE_USER)
{
- User* user = static_cast<User*>(item);
+ LocalUser* user = IS_LOCAL(static_cast<User*>(item));
- if (user->GetIOHook() == this)
+ 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");
- user->DelIOHook();
}
}
}
{
if (!sslports.empty())
output.append(" SSL=" + sslports);
- output.append(" STARTTLS");
+ if (starttls.enabled)
+ output.append(" STARTTLS");
}
void OnHookIO(StreamSocket* user, ListenSocket* lsb)
void OnRequest(Request& request)
{
- Module* sslinfo = ServerInstance->Modules->Find("m_sslinfo.so");
- if (sslinfo)
- sslinfo->OnRequest(request);
- }
+ if (strcmp("GET_SSL_CERT", request.id) == 0)
+ {
+ SocketCertificateRequest& req = static_cast<SocketCertificateRequest&>(request);
+ int fd = req.sock->GetFd();
+ issl_session* session = &sessions[fd];
+ req.cert = session->cert;
+ }
+ else if (!strcmp("GET_RAW_SSL_SESSION", request.id))
+ {
+ SSLRawSessionRequest& req = static_cast<SSLRawSessionRequest&>(request);
+ if ((req.fd >= 0) && (req.fd < ServerInstance->SE->GetMaxFds()))
+ req.data = reinterpret_cast<void*>(sessions[req.fd].sess);
+ }
+ }
- void OnStreamSocketAccept(StreamSocket* user, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server)
+ void InitSession(StreamSocket* user, bool me_server)
{
- int fd = user->GetFd();
- issl_session* session = &sessions[fd];
-
- /* For STARTTLS: Don't try and init a session on a socket that already has a session */
- if (session->sess)
- return;
+ issl_session* session = &sessions[user->GetFd()];
- gnutls_init(&session->sess, GNUTLS_SERVER);
+ gnutls_init(&session->sess, me_server ? GNUTLS_SERVER : GNUTLS_CLIENT);
+ session->socket = user;
+ session->config = currconf;
- gnutls_set_default_priority(session->sess); // Avoid calling all the priority functions, defaults are adequate.
- gnutls_credentials_set(session->sess, GNUTLS_CRD_CERTIFICATE, x509_cred);
+ #ifdef GNUTLS_NEW_PRIO_API
+ gnutls_priority_set(session->sess, currconf->priority);
+ #else
+ gnutls_set_default_priority(session->sess);
+ #endif
+ gnutls_credentials_set(session->sess, GNUTLS_CRD_CERTIFICATE, currconf->x509_cred);
gnutls_dh_set_prime_bits(session->sess, dh_bits);
-
- gnutls_transport_set_ptr(session->sess, reinterpret_cast<gnutls_transport_ptr_t>(user));
+ gnutls_transport_set_ptr(session->sess, reinterpret_cast<gnutls_transport_ptr_t>(session));
gnutls_transport_set_push_function(session->sess, gnutls_push_wrapper);
gnutls_transport_set_pull_function(session->sess, gnutls_pull_wrapper);
- gnutls_certificate_server_set_request(session->sess, GNUTLS_CERT_REQUEST); // Request client certificate if any.
+ if (me_server)
+ gnutls_certificate_server_set_request(session->sess, GNUTLS_CERT_REQUEST); // Request client certificate if any.
Handshake(session, user);
}
- void OnStreamSocketConnect(StreamSocket* user)
+ void OnStreamSocketAccept(StreamSocket* user, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server)
{
issl_session* session = &sessions[user->GetFd()];
- gnutls_init(&session->sess, GNUTLS_CLIENT);
+ /* For STARTTLS: Don't try and init a session on a socket that already has a session */
+ if (session->sess)
+ return;
- gnutls_set_default_priority(session->sess); // Avoid calling all the priority functions, defaults are adequate.
- gnutls_credentials_set(session->sess, GNUTLS_CRD_CERTIFICATE, x509_cred);
- gnutls_dh_set_prime_bits(session->sess, dh_bits);
- gnutls_transport_set_ptr(session->sess, reinterpret_cast<gnutls_transport_ptr_t>(user));
- gnutls_transport_set_push_function(session->sess, gnutls_push_wrapper);
- gnutls_transport_set_pull_function(session->sess, gnutls_pull_wrapper);
+ InitSession(user, true);
+ }
- Handshake(session, user);
+ void OnStreamSocketConnect(StreamSocket* user)
+ {
+ InitSession(user, false);
}
void OnStreamSocketClose(StreamSocket* user)
{
if (session->status != ISSL_CLOSING)
return 0;
- user->SetError("Handshake Failed");
return -1;
}
}
}
else if (ret == 0)
{
- user->SetError("SSL Connection closed");
+ user->SetError("Connection closed");
CloseSession(session);
return -1;
}
Handshake(session, user);
if (session->status != ISSL_CLOSING)
return 0;
- user->SetError("Handshake Failed");
return -1;
}
ServerInstance->SE->ChangeEventMask(user, FD_WANT_SINGLE_WRITE);
return 0;
}
- else if (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED)
+ else if (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED || ret == 0)
{
ServerInstance->SE->ChangeEventMask(user, FD_WANT_SINGLE_WRITE);
return 0;
}
- else if (ret == 0)
- {
- CloseSession(session);
- user->SetError("SSL Connection closed");
- return -1;
- }
else // (ret < 0)
{
user->SetError(gnutls_strerror(ret));
}
else
{
+ user->SetError("Handshake Failed - " + std::string(gnutls_strerror(ret)));
CloseSession(session);
session->status = ISSL_CLOSING;
}
}
}
- void OnPostConnect(User* user)
+ void OnUserConnect(LocalUser* user)
{
- // This occurs AFTER OnUserConnect so we can be sure the
- // protocol module has propagated the NICK message.
- if (user->GetIOHook() == this)
+ if (user->eh.GetIOHook() == this)
{
- if (sessions[user->GetFd()].sess)
+ if (sessions[user->eh.GetFd()].sess)
{
- std::string cipher = gnutls_kx_get_name(gnutls_kx_get(sessions[user->GetFd()].sess));
- cipher.append("-").append(gnutls_cipher_get_name(gnutls_cipher_get(sessions[user->GetFd()].sess))).append("-");
- cipher.append(gnutls_mac_get_name(gnutls_mac_get(sessions[user->GetFd()].sess)));
- user->WriteServ("NOTICE %s :*** You are connected using SSL cipher \"%s\"", user->nick.c_str(), cipher.c_str());
+ const gnutls_session_t& sess = sessions[user->eh.GetFd()].sess;
+ std::string cipher = UnknownIfNULL(gnutls_kx_get_name(gnutls_kx_get(sess)));
+ cipher.append("-").append(UnknownIfNULL(gnutls_cipher_get_name(gnutls_cipher_get(sess)))).append("-");
+ cipher.append(UnknownIfNULL(gnutls_mac_get_name(gnutls_mac_get(sess))));
+
+ ssl_cert* cert = sessions[user->eh.GetFd()].cert;
+ if (cert->fingerprint.empty())
+ user->WriteServ("NOTICE %s :*** You are connected using SSL cipher \"%s\"", user->nick.c_str(), cipher.c_str());
+ else
+ user->WriteServ("NOTICE %s :*** You are connected using SSL cipher \"%s\""
+ " and your SSL fingerprint is %s", user->nick.c_str(), cipher.c_str(), cert->fingerprint.c_str());
}
}
}
void CloseSession(issl_session* session)
{
- if(session->sess)
+ if (session->sess)
{
gnutls_bye(session->sess, GNUTLS_SHUT_WR);
gnutls_deinit(session->sess);
}
-
+ session->socket = NULL;
session->sess = NULL;
+ session->cert = NULL;
session->status = ISSL_NONE;
+ session->config = NULL;
}
- void VerifyCertificate(issl_session* session, Extensible* user)
+ void VerifyCertificate(issl_session* session, StreamSocket* user)
{
if (!session->sess || !user)
return;
- Module* sslinfo = ServerInstance->Modules->Find("m_sslinfo.so");
- if (!sslinfo)
- return;
-
unsigned int status;
const gnutls_datum_t* cert_list;
int ret;
size_t digest_size = sizeof(digest);
size_t name_size = sizeof(name);
ssl_cert* certinfo = new ssl_cert;
+ session->cert = certinfo;
/* This verification function uses the trusted CAs in the credentials
* structure. So you must have installed one or more CA certificates.
if (ret < 0)
{
certinfo->error = std::string(gnutls_strerror(ret));
- goto info_done;
+ return;
}
certinfo->invalid = (status & GNUTLS_CERT_INVALID);
if (gnutls_certificate_type_get(session->sess) != GNUTLS_CRT_X509)
{
certinfo->error = "No X509 keys sent";
- goto info_done;
+ return;
}
ret = gnutls_x509_crt_init(&cert);
if (ret < 0)
{
certinfo->error = gnutls_strerror(ret);
- goto info_done;
+ return;
}
cert_list_size = 0;
goto info_done_dealloc;
}
- gnutls_x509_crt_get_dn(cert, name, &name_size);
- certinfo->dn = name;
+ if (gnutls_x509_crt_get_dn(cert, name, &name_size) == 0)
+ {
+ std::string& dn = certinfo->dn;
+ dn = name;
+ // Make sure there are no chars in the string that we consider invalid
+ if (dn.find_first_of("\r\n") != std::string::npos)
+ dn.clear();
+ }
- gnutls_x509_crt_get_issuer_dn(cert, name, &name_size);
- certinfo->issuer = name;
+ name_size = sizeof(name);
+ if (gnutls_x509_crt_get_issuer_dn(cert, name, &name_size) == 0)
+ {
+ std::string& issuer = certinfo->issuer;
+ issuer = name;
+ if (issuer.find_first_of("\r\n") != std::string::npos)
+ issuer.clear();
+ }
- if ((ret = gnutls_x509_crt_get_fingerprint(cert, GNUTLS_DIG_MD5, digest, &digest_size)) < 0)
+ if ((ret = gnutls_x509_crt_get_fingerprint(cert, hash, digest, &digest_size)) < 0)
{
certinfo->error = gnutls_strerror(ret);
}
info_done_dealloc:
gnutls_x509_crt_deinit(cert);
-info_done:
- SSLCertSubmission(user, this, sslinfo, certinfo);
}
void OnEvent(Event& ev)
{
- capHandler.HandleEvent(ev);
+ if (starttls.enabled)
+ capHandler.HandleEvent(ev);
+ }
+
+ ModResult OnCheckReady(LocalUser* user)
+ {
+ if ((user->eh.GetIOHook() == this) && (sessions[user->eh.GetFd()].status != ISSL_HANDSHAKEN))
+ return MOD_RES_DENY;
+ return MOD_RES_PASSTHRU;
}
};
projects / user / henk / code / inspircd.git / blobdiff