* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
- * InspIRCd: (C) 2002-2009 InspIRCd Development Team
+ * InspIRCd: (C) 2002-2010 InspIRCd Development Team
* See: http://wiki.inspircd.org/Credits
*
* This program is free but copyrighted software; see
#include "inspircd.h"
#include <gnutls/gnutls.h>
#include <gnutls/x509.h>
-#include "transport.h"
+#include <gcrypt.h>
+#include "ssl.h"
#include "m_cap.h"
-#ifdef WINDOWS
-#pragma comment(lib, "libgnutls-13.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) */
enum issl_status { ISSL_NONE, ISSL_HANDSHAKING_READ, ISSL_HANDSHAKING_WRITE, ISSL_HANDSHAKEN, ISSL_CLOSING, ISSL_CLOSED };
-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;
+static std::vector<gnutls_x509_crt_t> x509_certs;
+static gnutls_x509_privkey_t x509_key;
+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) {
- if (std::find(portlist.begin(), portlist.end(), ":" + ConvToStr(port)) != portlist.end())
- return true;
+ st->type = GNUTLS_CRT_X509;
+ st->ncerts = x509_certs.size();
+ st->cert.x509 = &x509_certs[0];
+ st->key.x509 = x509_key;
+ st->deinit_all = 0;
- return std::find(portlist.begin(), portlist.end(), host + ":" + ConvToStr(port)) != portlist.end();
+ return 0;
}
-/** Represents an SSL user's extra data
- */
-class issl_session : public classbase
+static ssize_t gnutls_pull_wrapper(gnutls_transport_ptr_t user_wrap, void* buffer, size_t size)
{
-public:
- issl_session()
+ StreamSocket* user = reinterpret_cast<StreamSocket*>(user_wrap);
+ if (user->GetEventMask() & FD_READ_WILL_BLOCK)
+ {
+ errno = EAGAIN;
+ return -1;
+ }
+ int rv = recv(user->GetFd(), reinterpret_cast<char *>(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)
+{
+ StreamSocket* user = reinterpret_cast<StreamSocket*>(user_wrap);
+ if (user->GetEventMask() & FD_WRITE_WILL_BLOCK)
+ {
+ errno = EAGAIN;
+ return -1;
+ }
+ int rv = send(user->GetFd(), reinterpret_cast<const char *>(buffer), size, 0);
+ if (rv < (int)size)
+ ServerInstance->SE->ChangeEventMask(user, FD_WRITE_WILL_BLOCK);
+ return rv;
+}
+
+class RandGen : public HandlerBase2<void, char*, size_t>
+{
+ public:
+ RandGen() {}
+ void Call(char* buffer, size_t len)
{
- sess = NULL;
+ gcry_randomize(buffer, len, GCRY_STRONG_RANDOM);
}
+};
+/** Represents an SSL user's extra data
+ */
+class issl_session
+{
+public:
gnutls_session_t sess;
issl_status status;
- std::string outbuf;
+ reference<ssl_cert> cert;
+ issl_session() : sess(NULL) {}
};
-class CommandStartTLS : public Command
+class CommandStartTLS : public SplitCommand
{
- Module* Caller;
public:
- CommandStartTLS (InspIRCd* Instance, Module* mod) : Command(Instance,"STARTTLS", 0, 0, true), Caller(mod)
+ bool enabled;
+ CommandStartTLS (Module* mod) : SplitCommand(mod, "STARTTLS")
{
- this->source = "m_ssl_gnutls.so";
+ 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(Caller);
- Caller->OnRawSocketAccept(user->GetFd(), 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());
class ModuleSSLGnuTLS : public Module
{
- std::vector<std::string> listenports;
-
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;
- int clientactive;
bool cred_alloc;
+ RandGen randhandler;
CommandStartTLS starttls;
+ GenericCap capHandler;
+ ServiceProvider iohook;
public:
- ModuleSSLGnuTLS(InspIRCd* Me)
- : Module(Me), starttls(Me, this)
+ ModuleSSLGnuTLS()
+ : starttls(this), capHandler(this, "tls"), iohook(this, "ssl/gnutls", SERVICE_IOHOOK)
{
- ServerInstance->Modules->PublishInterface("BufferedSocketHook", this);
-
sessions = new issl_session[ServerInstance->SE->GetMaxFds()];
gnutls_global_init(); // This must be called once in the program
+ gnutls_x509_privkey_init(&x509_key);
cred_alloc = false;
+ }
+
+ void init()
+ {
// Needs the flag as it ignores a plain /rehash
OnModuleRehash(NULL,"ssl");
+ ServerInstance->GenRandom = &randhandler;
+
// Void return, guess we assume success
gnutls_certificate_set_dh_params(x509_cred, dh_params);
- Implementation eventlist[] = { I_On005Numeric, I_OnRawSocketConnect, I_OnRawSocketAccept,
- I_OnRawSocketClose, I_OnRawSocketRead, I_OnRawSocketWrite, I_OnCleanup,
- I_OnBufferFlushed, I_OnRequest, I_OnUnloadModule, I_OnRehash, I_OnModuleRehash,
- I_OnPostConnect, I_OnEvent, I_OnHookUserIO };
+ Implementation eventlist[] = { I_On005Numeric, I_OnRehash, I_OnModuleRehash, I_OnUserConnect,
+ I_OnEvent, I_OnHookIO };
ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
+ ServerInstance->Modules->AddService(iohook);
ServerInstance->AddCommand(&starttls);
}
- 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("gnutls");
+ starttls.enabled = Conf->getBool("starttls", true);
+
+ if (Conf->getBool("showports", true))
{
- // For each <bind> tag
- std::string x = Conf.ReadValue("bind", "type", index);
- if(((x.empty()) || (x == "clients")) && (Conf.ReadValue("bind", "ssl", index) == "gnutls"))
+ 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") != "gnutls")
+ 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_gnutls", DEFAULT, "m_ssl_gnutls.so: Enabling SSL for port %s", portid.c_str());
- irc::portparser portrange(port, false);
- long portno = -1;
- while ((portno = portrange.GetToken()))
- {
- clientactive++;
- try
- {
- listenports.push_back(addr + ":" + ConvToStr(portno));
-
- for (size_t i = 0; i < ServerInstance->ports.size(); i++)
- if ((ServerInstance->ports[i]->GetPort() == portno) && (ServerInstance->ports[i]->GetIP() == addr))
- ServerInstance->ports[i]->SetDescription("ssl");
- ServerInstance->Logs->Log("m_ssl_gnutls",DEFAULT, "m_ssl_gnutls.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_gnutls",DEFAULT, "m_ssl_gnutls.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());
- }
- }
+ if (port->bind_tag->getString("type", "clients") == "clients" && port->bind_addr != "127.0.0.1")
+ sslports.append(portid).append(";");
}
- }
- if (!sslports.empty())
- sslports.erase(sslports.end() - 1);
+ 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 crlfile;
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("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 = "ca.pem";
-
- if (crlfile.empty())
- crlfile = "crl.pem";
+ ConfigTag* Conf = ServerInstance->Config->ConfValue("gnutls");
- if (certfile.empty())
- certfile = "cert.pem";
-
- if (keyfile.empty())
- keyfile = "key.pem";
+ cafile = Conf->getString("cafile", "conf/ca.pem");
+ crlfile = Conf->getString("crlfile", "conf/crl.pem");
+ certfile = Conf->getString("certfile", "conf/cert.pem");
+ keyfile = Conf->getString("keyfile", "conf/key.pem");
+ dh_bits = Conf->getInt("dhbits");
+ std::string hashname = Conf->getString("hash", "md5");
if((dh_bits != 768) && (dh_bits != 1024) && (dh_bits != 2048) && (dh_bits != 3072) && (dh_bits != 4096))
dh_bits = 1024;
- // Prepend relative paths with the path to the config directory.
- if ((cafile[0] != '/') && (!ServerInstance->Config->StartsWithWindowsDriveLetter(cafile)))
- cafile = confdir + cafile;
-
- if ((crlfile[0] != '/') && (!ServerInstance->Config->StartsWithWindowsDriveLetter(crlfile)))
- crlfile = confdir + crlfile;
-
- if ((certfile[0] != '/') && (!ServerInstance->Config->StartsWithWindowsDriveLetter(certfile)))
- certfile = confdir + certfile;
+ if (hashname == "md5")
+ hash = GNUTLS_DIG_MD5;
+ else if (hashname == "sha1")
+ hash = GNUTLS_DIG_SHA1;
+ else
+ throw ModuleException("Unknown hash type " + hashname);
- if ((keyfile[0] != '/') && (!ServerInstance->Config->StartsWithWindowsDriveLetter(keyfile)))
- keyfile = confdir + keyfile;
int ret;
// Deallocate the old credentials
gnutls_dh_params_deinit(dh_params);
gnutls_certificate_free_credentials(x509_cred);
+
+ for(unsigned int i=0; i < x509_certs.size(); i++)
+ gnutls_x509_crt_deinit(x509_certs[i]);
+ x509_certs.clear();
}
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_dh_params_init(&dh_params)) < 0)
- ServerInstance->Logs->Log("m_ssl_gnutls",DEBUG, "m_ssl_gnutls.so: Failed to initialise DH parameters: %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));
if((ret = gnutls_certificate_set_x509_crl_file (x509_cred, crlfile.c_str(), GNUTLS_X509_FMT_PEM)) < 0)
ServerInstance->Logs->Log("m_ssl_gnutls",DEBUG, "m_ssl_gnutls.so: Failed to set X.509 CRL file '%s': %s", crlfile.c_str(), gnutls_strerror(ret));
- if((ret = gnutls_certificate_set_x509_key_file (x509_cred, certfile.c_str(), keyfile.c_str(), GNUTLS_X509_FMT_PEM)) < 0)
- {
- // If this fails, no SSL port will work. At all. So, do the smart thing - throw a ModuleException
- throw ModuleException("Unable to load GnuTLS server certificate (" + certfile + ", key: " + keyfile + "): " + std::string(gnutls_strerror(ret)));
- }
+ FileReader reader;
+
+ reader.LoadFile(certfile);
+ std::string cert_string = reader.Contents();
+ gnutls_datum_t cert_datum = { (unsigned char*)cert_string.data(), 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() };
+
+ // If this fails, no SSL port will work. At all. So, do the smart thing - throw a ModuleException
+ unsigned int certcount = Conf->getInt("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 < 0)
+ throw ModuleException("Unable to load GnuTLS server certificate (" + certfile + "): " + std::string(gnutls_strerror(ret)));
+ x509_certs.resize(certcount);
+
+ 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_certs[0], certcount, x509_key)) < 0)
+ throw ModuleException("Unable to set GnuTLS cert/key pair: " + std::string(gnutls_strerror(ret)));
+
+ gnutls_certificate_client_set_retrieve_function (x509_cred, cert_callback);
+
+ if((ret = gnutls_dh_params_init(&dh_params)) < 0)
+ ServerInstance->Logs->Log("m_ssl_gnutls",DEFAULT, "m_ssl_gnutls.so: Failed to initialise DH parameters: %s", gnutls_strerror(ret));
// This may be on a large (once a day or week) timer eventually.
GenerateDHParams();
ServerInstance->Logs->Log("m_ssl_gnutls",DEFAULT, "m_ssl_gnutls.so: Failed to generate DH parameters (%d bits): %s", dh_bits, gnutls_strerror(ret));
}
- virtual ~ModuleSSLGnuTLS()
+ ~ModuleSSLGnuTLS()
{
- gnutls_dh_params_deinit(dh_params);
- gnutls_certificate_free_credentials(x509_cred);
+ for(unsigned int i=0; i < x509_certs.size(); i++)
+ gnutls_x509_crt_deinit(x509_certs[i]);
+ x509_certs.clear();
+ gnutls_x509_privkey_deinit(x509_key);
+ if (cred_alloc)
+ {
+ gnutls_dh_params_deinit(dh_params);
+ gnutls_certificate_free_credentials(x509_cred);
+ }
gnutls_global_deinit();
- ServerInstance->Modules->UnpublishInterface("BufferedSocketHook", this);
delete[] sessions;
+ ServerInstance->GenRandom = &ServerInstance->HandleGenRandom;
}
- virtual void OnCleanup(int target_type, void* item)
+ void OnCleanup(int target_type, void* item)
{
if(target_type == TYPE_USER)
{
- User* user = (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 (user->GetExt("ssl_cert"))
- {
- ssl_cert* tofree;
- user->GetExt("ssl_cert", tofree);
- delete tofree;
- user->Shrink("ssl_cert");
}
}
}
- virtual void OnUnloadModule(Module* mod, const std::string &name)
+ Version GetVersion()
{
- if(mod == this)
- {
- for(unsigned int i = 0; i < listenports.size(); i++)
- {
- for (size_t j = 0; j < ServerInstance->ports.size(); j++)
- if (listenports[i] == (ServerInstance->ports[j]->GetIP()+":"+ConvToStr(ServerInstance->ports[j]->GetPort())))
- ServerInstance->ports[j]->SetDescription("plaintext");
- }
- }
+ return Version("Provides SSL support for clients", VF_VENDOR);
}
- virtual Version GetVersion()
- {
- return Version("$Id$", VF_VENDOR, API_VERSION);
- }
-
- virtual void On005Numeric(std::string &output)
+ void On005Numeric(std::string &output)
{
if (!sslports.empty())
output.append(" SSL=" + sslports);
- output.append(" STARTTLS");
+ if (starttls.enabled)
+ output.append(" STARTTLS");
}
- virtual void OnHookUserIO(User* user)
+ void OnHookIO(StreamSocket* user, ListenSocket* lsb)
{
- if (!user->GetIOHook() && isin(user->GetServerIP(),user->GetServerPort(),listenports))
+ if (!user->GetIOHook() && lsb->bind_tag->getString("ssl") == "gnutls")
{
/* Hook the user with our module */
user->AddIOHook(this);
}
}
- virtual const char* OnRequest(Request* request)
+ void OnRequest(Request& request)
{
- ISHRequest* ISR = (ISHRequest*)request;
- if (strcmp("IS_NAME", request->GetId()) == 0)
+ if (strcmp("GET_SSL_CERT", request.id) == 0)
{
- return "gnutls";
- }
- 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 (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_READ || session->status == ISSL_HANDSHAKING_WRITE) ? NULL : "OK";
- }
- else if (strcmp("IS_ATTACH", request->GetId()) == 0)
- {
- if (ISR->Sock->GetFd() > -1)
- {
- issl_session* session = &sessions[ISR->Sock->GetFd()];
- if (session->sess)
- {
- if ((Extensible*)ServerInstance->SE->GetRef(ISR->Sock->GetFd()) == (Extensible*)(ISR->Sock))
- {
- VerifyCertificate(session, (BufferedSocket*)ISR->Sock);
- return "OK";
- }
- }
- }
- }
- else if (strcmp("GET_FP", request->GetId()) == 0)
- {
- if (ISR->Sock->GetFd() > -1)
- {
- issl_session* session = &sessions[ISR->Sock->GetFd()];
- if (session->sess)
- {
- Extensible* ext = ISR->Sock;
- ssl_cert* certinfo;
- if (ext->GetExt("ssl_cert",certinfo))
- return certinfo->GetFingerprint().c_str();
- }
- }
+ req.cert = session->cert;
}
- return NULL;
}
-
- virtual void OnRawSocketAccept(int fd, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server)
+ 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];
/* For STARTTLS: Don't try and init a session on a socket that already has a session */
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, (gnutls_transport_ptr_t) fd); // Give gnutls the fd for the socket.
+ 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);
gnutls_certificate_server_set_request(session->sess, GNUTLS_CERT_REQUEST); // Request client certificate if any.
- Handshake(session, fd);
+ Handshake(session, user);
}
- virtual void OnRawSocketConnect(int fd)
+ void OnStreamSocketConnect(StreamSocket* user)
{
- /* 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];
+ issl_session* session = &sessions[user->GetFd()];
gnutls_init(&session->sess, GNUTLS_CLIENT);
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, (gnutls_transport_ptr_t) fd); // Give gnutls the fd for the socket.
+ 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);
- Handshake(session, fd);
+ Handshake(session, user);
}
- virtual void OnRawSocketClose(int fd)
+ void OnStreamSocketClose(StreamSocket* user)
{
- /* Are there any possibilities of an out of range fd? Hope not, but lets be paranoid */
- if ((fd < 0) || (fd > ServerInstance->SE->GetMaxFds()))
- return;
-
- CloseSession(&sessions[fd]);
-
- EventHandler* user = ServerInstance->SE->GetRef(fd);
-
- if ((user) && (user->GetExt("ssl_cert")))
- {
- ssl_cert* tofree;
- user->GetExt("ssl_cert", tofree);
- delete tofree;
- user->Shrink("ssl_cert");
- }
+ CloseSession(&sessions[user->GetFd()]);
}
- virtual int OnRawSocketRead(int fd, char* buffer, unsigned int count, int &readresult)
+ int OnStreamSocketRead(StreamSocket* user, std::string& recvq)
{
- /* 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;
-
- issl_session* session = &sessions[fd];
+ issl_session* session = &sessions[user->GetFd()];
if (!session->sess)
{
- readresult = 0;
CloseSession(session);
- return 1;
+ user->SetError("No SSL session");
+ return -1;
}
- if (session->status == ISSL_HANDSHAKING_READ)
+ if (session->status == ISSL_HANDSHAKING_READ || session->status == ISSL_HANDSHAKING_WRITE)
{
// The handshake isn't finished, try to finish it.
- if(!Handshake(session, fd))
+ if(!Handshake(session, user))
{
- errno = session->status == ISSL_CLOSING ? EIO : EAGAIN;
- // Couldn't resume handshake.
+ if (session->status != ISSL_CLOSING)
+ return 0;
return -1;
}
}
- else if (session->status == ISSL_HANDSHAKING_WRITE)
- {
- errno = EAGAIN;
- MakePollWrite(fd);
- return -1;
- }
// If we resumed the handshake then session->status will be ISSL_HANDSHAKEN.
if (session->status == ISSL_HANDSHAKEN)
{
- unsigned int len = 0;
- while (len < count)
+ char* buffer = ServerInstance->GetReadBuffer();
+ size_t bufsiz = ServerInstance->Config->NetBufferSize;
+ int ret = gnutls_record_recv(session->sess, buffer, bufsiz);
+ if (ret > 0)
{
- int ret = gnutls_record_recv(session->sess, buffer + len, count - len);
- if (ret > 0)
- {
- len += ret;
- }
- else if (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED)
- {
- break;
- }
- else
- {
- if (ret != 0)
- ServerInstance->Logs->Log("m_ssl_gnutls", DEFAULT,
- "m_ssl_gnutls.so: Error while reading on fd %d: %s",
- fd, gnutls_strerror(ret));
-
- // if ret == 0, client closed connection.
- readresult = 0;
- CloseSession(session);
- return 1;
- }
+ recvq.append(buffer, ret);
+ return 1;
}
- readresult = len;
- if (len)
+ else if (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED)
{
- return 1;
+ return 0;
+ }
+ else if (ret == 0)
+ {
+ user->SetError("SSL Connection closed");
+ CloseSession(session);
+ return -1;
}
else
{
- errno = EAGAIN;
+ user->SetError(gnutls_strerror(ret));
+ CloseSession(session);
return -1;
}
}
else if (session->status == ISSL_CLOSING)
- readresult = 0;
+ return -1;
- return 1;
+ return 0;
}
- virtual int OnRawSocketWrite(int fd, const char* buffer, int count)
+ int OnStreamSocketWrite(StreamSocket* user, std::string& sendq)
{
- /* 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;
-
- issl_session* session = &sessions[fd];
- const char* sendbuffer = buffer;
+ issl_session* session = &sessions[user->GetFd()];
if (!session->sess)
{
CloseSession(session);
- return 1;
+ user->SetError("No SSL session");
+ return -1;
}
- session->outbuf.append(sendbuffer, count);
- sendbuffer = session->outbuf.c_str();
- count = session->outbuf.size();
-
if (session->status == ISSL_HANDSHAKING_WRITE || session->status == ISSL_HANDSHAKING_READ)
{
// The handshake isn't finished, try to finish it.
- Handshake(session, fd);
- errno = session->status == ISSL_CLOSING ? EIO : EAGAIN;
+ Handshake(session, user);
+ if (session->status != ISSL_CLOSING)
+ return 0;
return -1;
}
if (session->status == ISSL_HANDSHAKEN)
{
- ret = gnutls_record_send(session->sess, sendbuffer, count);
+ ret = gnutls_record_send(session->sess, sendq.data(), sendq.length());
- if (ret == 0)
+ if (ret == (int)sendq.length())
{
- CloseSession(session);
+ ServerInstance->SE->ChangeEventMask(user, FD_WANT_NO_WRITE);
+ return 1;
}
- else if (ret < 0)
+ else if (ret > 0)
{
- if(ret != GNUTLS_E_AGAIN && ret != GNUTLS_E_INTERRUPTED)
- {
- ServerInstance->Logs->Log("m_ssl_gnutls", DEFAULT,
- "m_ssl_gnutls.so: Error while writing to fd %d: %s",
- fd, gnutls_strerror(ret));
- CloseSession(session);
- }
- else
- {
- errno = EAGAIN;
- }
+ sendq = sendq.substr(ret);
+ ServerInstance->SE->ChangeEventMask(user, FD_WANT_SINGLE_WRITE);
+ return 0;
}
- else
+ else if (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED || ret == 0)
+ {
+ ServerInstance->SE->ChangeEventMask(user, FD_WANT_SINGLE_WRITE);
+ return 0;
+ }
+ else // (ret < 0)
{
- session->outbuf = session->outbuf.substr(ret);
+ user->SetError(gnutls_strerror(ret));
+ CloseSession(session);
+ return -1;
}
}
- if (!session->outbuf.empty())
- MakePollWrite(fd);
-
- /* Who's smart idea was it to return 1 when we havent written anything?
- * This fucks the buffer up in BufferedSocket :p
- */
- return ret < 1 ? 0 : ret;
+ return 0;
}
- bool Handshake(issl_session* session, int fd)
+ bool Handshake(issl_session* session, StreamSocket* user)
{
int ret = gnutls_handshake(session->sess);
{
// gnutls_handshake() wants to read() again.
session->status = ISSL_HANDSHAKING_READ;
+ ServerInstance->SE->ChangeEventMask(user, FD_WANT_POLL_READ | FD_WANT_NO_WRITE);
}
else
{
// gnutls_handshake() wants to write() again.
session->status = ISSL_HANDSHAKING_WRITE;
- MakePollWrite(fd);
+ ServerInstance->SE->ChangeEventMask(user, FD_WANT_NO_READ | FD_WANT_SINGLE_WRITE);
}
}
else
{
- // Handshake failed.
- ServerInstance->Logs->Log("m_ssl_gnutls", DEFAULT,
- "m_ssl_gnutls.so: Handshake failed on fd %d: %s",
- fd, gnutls_strerror(ret));
+ user->SetError(std::string("Handshake Failed - ") + gnutls_strerror(ret));
CloseSession(session);
session->status = ISSL_CLOSING;
}
}
else
{
- // Handshake complete.
- // This will do for setting the ssl flag...it could be done earlier if it's needed. But this seems neater.
- EventHandler *extendme = ServerInstance->SE->GetRef(fd);
- if (extendme)
- {
- if (!extendme->GetExt("ssl"))
- extendme->Extend("ssl", "ON");
- }
-
// Change the seesion state
session->status = ISSL_HANDSHAKEN;
+ VerifyCertificate(session,user);
+
// Finish writing, if any left
- MakePollWrite(fd);
+ ServerInstance->SE->ChangeEventMask(user, FD_WANT_POLL_READ | FD_WANT_NO_WRITE | FD_ADD_TRIAL_WRITE);
return true;
}
}
- virtual 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 && (IS_LOCAL(user)))
+ if (user->eh.GetIOHook() == this)
{
- ssl_cert* certdata = VerifyCertificate(&sessions[user->GetFd()],user);
- 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());
+ ssl_cert* cert = sessions[user->eh.GetFd()].cert;
+ std::string cipher = gnutls_kx_get_name(gnutls_kx_get(sessions[user->eh.GetFd()].sess));
+ cipher.append("-").append(gnutls_cipher_get_name(gnutls_cipher_get(sessions[user->eh.GetFd()].sess))).append("-");
+ cipher.append(gnutls_mac_get_name(gnutls_mac_get(sessions[user->eh.GetFd()].sess)));
+ 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());
}
-
- ServerInstance->PI->SendMetaData(user, TYPE_USER, "ssl", "ON");
- if (certdata)
- ServerInstance->PI->SendMetaData(user, TYPE_USER, "ssl_cert", certdata->GetMetaLine().c_str());
- }
- }
-
- void MakePollWrite(int fd)
- {
- //OnRawSocketWrite(fd, NULL, 0);
- EventHandler* eh = ServerInstance->SE->GetRef(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);
}
}
void CloseSession(issl_session* session)
{
- if(session->sess)
+ if (session->sess)
{
gnutls_bye(session->sess, GNUTLS_SHUT_WR);
gnutls_deinit(session->sess);
}
-
- session->outbuf.clear();
session->sess = NULL;
+ session->cert = NULL;
session->status = ISSL_NONE;
}
- ssl_cert* VerifyCertificate(issl_session* session, Extensible* user)
+ void VerifyCertificate(issl_session* session, StreamSocket* user)
{
- if (!session->sess || !user)
- return NULL;
+ if (!session->sess || !user || session->cert)
+ return;
unsigned int status;
const gnutls_datum_t* cert_list;
size_t digest_size = sizeof(digest);
size_t name_size = sizeof(name);
ssl_cert* certinfo = new ssl_cert;
-
- user->Extend("ssl_cert",certinfo);
+ 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));
- return certinfo;
+ return;
}
certinfo->invalid = (status & GNUTLS_CERT_INVALID);
if (gnutls_certificate_type_get(session->sess) != GNUTLS_CRT_X509)
{
certinfo->error = "No X509 keys sent";
- return certinfo;
+ return;
}
ret = gnutls_x509_crt_init(&cert);
if (ret < 0)
{
certinfo->error = gnutls_strerror(ret);
- return certinfo;
+ return;
}
cert_list_size = 0;
if (cert_list == NULL)
{
certinfo->error = "No certificate was found";
- return certinfo;
+ goto info_done_dealloc;
}
/* This is not a real world example, since we only check the first
if (ret < 0)
{
certinfo->error = gnutls_strerror(ret);
- return certinfo;
+ goto info_done_dealloc;
}
gnutls_x509_crt_get_dn(cert, name, &name_size);
gnutls_x509_crt_get_issuer_dn(cert, name, &name_size);
certinfo->issuer = name;
- 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);
}
certinfo->error = "Not activated, or expired certificate";
}
+info_done_dealloc:
gnutls_x509_crt_deinit(cert);
-
- return certinfo;
- }
-
- void OnEvent(Event* ev)
- {
- GenericCapHandler(ev, "tls", "tls");
}
- void Prioritize()
+ void OnEvent(Event& ev)
{
- Module* server = ServerInstance->Modules->Find("m_spanningtree.so");
- ServerInstance->Modules->SetPriority(this, I_OnPostConnect, PRIORITY_AFTER, &server);
+ if (starttls.enabled)
+ capHandler.HandleEvent(ev);
}
};
projects / user / henk / code / inspircd.git / blobdiff