1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd: (C) 2002-2008 InspIRCd Development Team
6 * See: http://www.inspircd.org/wiki/index.php/Credits
8 * This program is free but copyrighted software; see
9 * the file COPYING for details.
11 * ---------------------------------------------------
16 #include <gnutls/gnutls.h>
17 #include <gnutls/x509.h>
19 #include "inspircd_config.h"
20 #include "configreader.h"
26 #include "transport.h"
30 #pragma comment(lib, "libgnutls-13.lib")
33 /* $ModDesc: Provides SSL support for clients */
34 /* $CompileFlags: exec("libgnutls-config --cflags") */
35 /* $LinkerFlags: rpath("libgnutls-config --libs") exec("libgnutls-config --libs") */
36 /* $ModDep: transport.h */
37 /* $CopyInstall: conf/key.pem $(CONPATH) */
38 /* $CopyInstall: conf/cert.pem $(CONPATH) */
40 enum issl_status { ISSL_NONE, ISSL_HANDSHAKING_READ, ISSL_HANDSHAKING_WRITE, ISSL_HANDSHAKEN, ISSL_CLOSING, ISSL_CLOSED };
42 bool isin(const std::string &host, int port, const std::vector<std::string> &portlist)
44 if (std::find(portlist.begin(), portlist.end(), "*:" + ConvToStr(port)) != portlist.end())
47 if (std::find(portlist.begin(), portlist.end(), ":" + ConvToStr(port)) != portlist.end())
50 return std::find(portlist.begin(), portlist.end(), host + ":" + ConvToStr(port)) != portlist.end();
53 /** Represents an SSL user's extra data
55 class issl_session : public classbase
58 gnutls_session_t sess;
66 class CommandStartTLS : public Command
70 /* Command 'dalinfo', takes no parameters and needs no special modes */
71 CommandStartTLS (InspIRCd* Instance, Module* mod) : Command(Instance,"STARTTLS", 0, 0, true), Caller(mod)
73 this->source = "m_ssl_gnutls.so";
76 CmdResult Handle (const std::vector<std::string> ¶meters, User *user)
78 if (user->registered == REG_ALL)
80 ServerInstance->Users->QuitUser(user, "STARTTLS not allowed after client registration");
86 user->WriteNumeric(670, "%s :STARTTLS successful, go ahead with TLS handshake", user->nick.c_str());
88 Caller->OnRawSocketAccept(user->GetFd(), user->GetIPString(), user->GetPort());
91 user->WriteNumeric(671, "%s :STARTTLS failure", user->nick.c_str());
98 class ModuleSSLGnuTLS : public Module
105 std::vector<std::string> listenports;
108 issl_session* sessions;
110 gnutls_certificate_credentials x509_cred;
111 gnutls_dh_params dh_params;
114 std::string certfile;
117 std::string sslports;
122 CommandStartTLS* starttls;
126 ModuleSSLGnuTLS(InspIRCd* Me)
129 ServerInstance->Modules->PublishInterface("BufferedSocketHook", this);
131 sessions = new issl_session[ServerInstance->SE->GetMaxFds()];
133 // Not rehashable...because I cba to reduce all the sizes of existing buffers.
134 inbufsize = ServerInstance->Config->NetBufferSize;
136 gnutls_global_init(); // This must be called once in the program
138 if(gnutls_certificate_allocate_credentials(&x509_cred) != 0)
139 ServerInstance->Logs->Log("m_ssl_gnutls",DEFAULT, "m_ssl_gnutls.so: Failed to allocate certificate credentials");
141 // Guessing return meaning
142 if(gnutls_dh_params_init(&dh_params) < 0)
143 ServerInstance->Logs->Log("m_ssl_gnutls",DEFAULT, "m_ssl_gnutls.so: Failed to initialise DH parameters");
145 // Needs the flag as it ignores a plain /rehash
146 OnRehash(NULL,"ssl");
148 // Void return, guess we assume success
149 gnutls_certificate_set_dh_params(x509_cred, dh_params);
150 Implementation eventlist[] = { I_On005Numeric, I_OnRawSocketConnect, I_OnRawSocketAccept, I_OnRawSocketClose, I_OnRawSocketRead, I_OnRawSocketWrite, I_OnCleanup,
151 I_OnBufferFlushed, I_OnRequest, I_OnSyncUserMetaData, I_OnDecodeMetaData, I_OnUnloadModule, I_OnRehash, I_OnWhois, I_OnPostConnect, I_OnEvent, I_OnHookUserIO };
152 ServerInstance->Modules->Attach(eventlist, this, 17);
154 starttls = new CommandStartTLS(ServerInstance, this);
155 ServerInstance->AddCommand(starttls);
158 virtual void OnRehash(User* user, const std::string ¶m)
160 Conf = new ConfigReader(ServerInstance);
166 for(int index = 0; index < Conf->Enumerate("bind"); index++)
168 // For each <bind> tag
169 std::string x = Conf->ReadValue("bind", "type", index);
170 if(((x.empty()) || (x == "clients")) && (Conf->ReadValue("bind", "ssl", index) == "gnutls"))
172 // Get the port we're meant to be listening on with SSL
173 std::string port = Conf->ReadValue("bind", "port", index);
174 std::string addr = Conf->ReadValue("bind", "address", index);
176 irc::portparser portrange(port, false);
178 while ((portno = portrange.GetToken()))
183 listenports.push_back(addr + ":" + ConvToStr(portno));
185 for (size_t i = 0; i < ServerInstance->Config->ports.size(); i++)
186 if ((ServerInstance->Config->ports[i]->GetPort() == portno) && (ServerInstance->Config->ports[i]->GetIP() == addr))
187 ServerInstance->Config->ports[i]->SetDescription("ssl");
188 ServerInstance->Logs->Log("m_ssl_gnutls",DEFAULT, "m_ssl_gnutls.so: Enabling SSL for port %ld", portno);
190 sslports.append((addr.empty() ? "*" : addr)).append(":").append(ConvToStr(portno)).append(";");
192 catch (ModuleException &e)
194 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());
200 if (!sslports.empty())
201 sslports.erase(sslports.end() - 1);
209 std::string confdir(ServerInstance->ConfigFileName);
210 // +1 so we the path ends with a /
211 confdir = confdir.substr(0, confdir.find_last_of('/') + 1);
213 cafile = Conf->ReadValue("gnutls", "cafile", 0);
214 crlfile = Conf->ReadValue("gnutls", "crlfile", 0);
215 certfile = Conf->ReadValue("gnutls", "certfile", 0);
216 keyfile = Conf->ReadValue("gnutls", "keyfile", 0);
217 dh_bits = Conf->ReadInteger("gnutls", "dhbits", 0, false);
219 // Set all the default values needed.
226 if (certfile.empty())
227 certfile = "cert.pem";
232 if((dh_bits != 768) && (dh_bits != 1024) && (dh_bits != 2048) && (dh_bits != 3072) && (dh_bits != 4096))
235 // Prepend relative paths with the path to the config directory.
236 if ((cafile[0] != '/') && (!ServerInstance->Config->StartsWithWindowsDriveLetter(cafile)))
237 cafile = confdir + cafile;
239 if ((crlfile[0] != '/') && (!ServerInstance->Config->StartsWithWindowsDriveLetter(crlfile)))
240 crlfile = confdir + crlfile;
242 if ((certfile[0] != '/') && (!ServerInstance->Config->StartsWithWindowsDriveLetter(certfile)))
243 certfile = confdir + certfile;
245 if ((keyfile[0] != '/') && (!ServerInstance->Config->StartsWithWindowsDriveLetter(keyfile)))
246 keyfile = confdir + keyfile;
250 if((ret =gnutls_certificate_set_x509_trust_file(x509_cred, cafile.c_str(), GNUTLS_X509_FMT_PEM)) < 0)
251 ServerInstance->Logs->Log("m_ssl_gnutls",DEFAULT, "m_ssl_gnutls.so: Failed to set X.509 trust file '%s': %s", cafile.c_str(), gnutls_strerror(ret));
253 if((ret = gnutls_certificate_set_x509_crl_file (x509_cred, crlfile.c_str(), GNUTLS_X509_FMT_PEM)) < 0)
254 ServerInstance->Logs->Log("m_ssl_gnutls",DEFAULT, "m_ssl_gnutls.so: Failed to set X.509 CRL file '%s': %s", crlfile.c_str(), gnutls_strerror(ret));
256 if((ret = gnutls_certificate_set_x509_key_file (x509_cred, certfile.c_str(), keyfile.c_str(), GNUTLS_X509_FMT_PEM)) < 0)
258 // If this fails, no SSL port will work. At all. So, do the smart thing - throw a ModuleException
259 throw ModuleException("Unable to load GnuTLS server certificate: " + std::string(gnutls_strerror(ret)));
262 // This may be on a large (once a day or week) timer eventually.
268 void GenerateDHParams()
270 // Generate Diffie Hellman parameters - for use with DHE
271 // kx algorithms. These should be discarded and regenerated
272 // once a day, once a week or once a month. Depending on the
273 // security requirements.
277 if((ret = gnutls_dh_params_generate2(dh_params, dh_bits)) < 0)
278 ServerInstance->Logs->Log("m_ssl_gnutls",DEFAULT, "m_ssl_gnutls.so: Failed to generate DH parameters (%d bits): %s", dh_bits, gnutls_strerror(ret));
281 virtual ~ModuleSSLGnuTLS()
283 gnutls_dh_params_deinit(dh_params);
284 gnutls_certificate_free_credentials(x509_cred);
285 gnutls_global_deinit();
286 ServerInstance->Modules->UnpublishInterface("BufferedSocketHook", this);
290 virtual void OnCleanup(int target_type, void* item)
292 if(target_type == TYPE_USER)
294 User* user = (User*)item;
298 // User is using SSL, they're a local user, and they're using one of *our* SSL ports.
299 // Potentially there could be multiple SSL modules loaded at once on different ports.
300 ServerInstance->Users->QuitUser(user, "SSL module unloading");
302 if (user->GetExt("ssl_cert", dummy))
305 user->GetExt("ssl_cert", tofree);
307 user->Shrink("ssl_cert");
314 virtual void OnUnloadModule(Module* mod, const std::string &name)
318 for(unsigned int i = 0; i < listenports.size(); i++)
320 for (size_t j = 0; j < ServerInstance->Config->ports.size(); j++)
321 if (listenports[i] == (ServerInstance->Config->ports[j]->GetIP()+":"+ConvToStr(ServerInstance->Config->ports[j]->GetPort())))
322 ServerInstance->Config->ports[j]->SetDescription("plaintext");
327 virtual Version GetVersion()
329 return Version(1, 2, 0, 0, VF_VENDOR, API_VERSION);
333 virtual void On005Numeric(std::string &output)
335 output.append(" SSL=" + sslports);
338 virtual void OnHookUserIO(User* user, const std::string &targetip)
340 if (!user->io && isin(targetip,user->GetPort(),listenports))
342 /* Hook the user with our module */
347 virtual const char* OnRequest(Request* request)
349 ISHRequest* ISR = (ISHRequest*)request;
350 if (strcmp("IS_NAME", request->GetId()) == 0)
354 else if (strcmp("IS_HOOK", request->GetId()) == 0)
356 const char* ret = "OK";
359 ret = ServerInstance->Config->AddIOHook((Module*)this, (BufferedSocket*)ISR->Sock) ? "OK" : NULL;
361 catch (ModuleException &e)
367 else if (strcmp("IS_UNHOOK", request->GetId()) == 0)
369 return ServerInstance->Config->DelIOHook((BufferedSocket*)ISR->Sock) ? "OK" : NULL;
371 else if (strcmp("IS_HSDONE", request->GetId()) == 0)
373 if (ISR->Sock->GetFd() < 0)
376 issl_session* session = &sessions[ISR->Sock->GetFd()];
377 return (session->status == ISSL_HANDSHAKING_READ || session->status == ISSL_HANDSHAKING_WRITE) ? NULL : "OK";
379 else if (strcmp("IS_ATTACH", request->GetId()) == 0)
381 if (ISR->Sock->GetFd() > -1)
383 issl_session* session = &sessions[ISR->Sock->GetFd()];
386 if ((Extensible*)ServerInstance->FindDescriptor(ISR->Sock->GetFd()) == (Extensible*)(ISR->Sock))
388 VerifyCertificate(session, (BufferedSocket*)ISR->Sock);
398 virtual void OnRawSocketAccept(int fd, const std::string &ip, int localport)
400 /* Are there any possibilities of an out of range fd? Hope not, but lets be paranoid */
401 if ((fd < 0) || (fd > ServerInstance->SE->GetMaxFds() - 1))
404 issl_session* session = &sessions[fd];
406 /* For STARTTLS: Don't try and init a session on a socket that already has a session */
411 session->inbuf = new char[inbufsize];
412 session->inbufoffset = 0;
414 gnutls_init(&session->sess, GNUTLS_SERVER);
416 gnutls_set_default_priority(session->sess); // Avoid calling all the priority functions, defaults are adequate.
417 gnutls_credentials_set(session->sess, GNUTLS_CRD_CERTIFICATE, x509_cred);
418 gnutls_dh_set_prime_bits(session->sess, dh_bits);
420 /* This is an experimental change to avoid a warning on 64bit systems about casting between integer and pointer of different sizes
421 * This needs testing, but it's easy enough to rollback if need be
422 * Old: gnutls_transport_set_ptr(session->sess, (gnutls_transport_ptr_t) fd); // Give gnutls the fd for the socket.
423 * New: gnutls_transport_set_ptr(session->sess, &fd); // Give gnutls the fd for the socket.
425 * With testing this seems to...not work :/
428 gnutls_transport_set_ptr(session->sess, (gnutls_transport_ptr_t) fd); // Give gnutls the fd for the socket.
430 gnutls_certificate_server_set_request(session->sess, GNUTLS_CERT_REQUEST); // Request client certificate if any.
435 virtual void OnRawSocketConnect(int fd)
437 /* Are there any possibilities of an out of range fd? Hope not, but lets be paranoid */
438 if ((fd < 0) || (fd > ServerInstance->SE->GetMaxFds() - 1))
441 issl_session* session = &sessions[fd];
444 session->inbuf = new char[inbufsize];
445 session->inbufoffset = 0;
447 gnutls_init(&session->sess, GNUTLS_CLIENT);
449 gnutls_set_default_priority(session->sess); // Avoid calling all the priority functions, defaults are adequate.
450 gnutls_credentials_set(session->sess, GNUTLS_CRD_CERTIFICATE, x509_cred);
451 gnutls_dh_set_prime_bits(session->sess, dh_bits);
452 gnutls_transport_set_ptr(session->sess, (gnutls_transport_ptr_t) fd); // Give gnutls the fd for the socket.
457 virtual void OnRawSocketClose(int fd)
459 /* Are there any possibilities of an out of range fd? Hope not, but lets be paranoid */
460 if ((fd < 0) || (fd > ServerInstance->SE->GetMaxFds()))
463 CloseSession(&sessions[fd]);
465 EventHandler* user = ServerInstance->SE->GetRef(fd);
467 if ((user) && (user->GetExt("ssl_cert", dummy)))
470 user->GetExt("ssl_cert", tofree);
472 user->Shrink("ssl_cert");
476 virtual int OnRawSocketRead(int fd, char* buffer, unsigned int count, int &readresult)
478 /* Are there any possibilities of an out of range fd? Hope not, but lets be paranoid */
479 if ((fd < 0) || (fd > ServerInstance->SE->GetMaxFds() - 1))
482 issl_session* session = &sessions[fd];
487 CloseSession(session);
491 if (session->status == ISSL_HANDSHAKING_READ)
493 // The handshake isn't finished, try to finish it.
495 if(!Handshake(session))
497 // Couldn't resume handshake.
501 else if (session->status == ISSL_HANDSHAKING_WRITE)
504 MakePollWrite(session);
508 // If we resumed the handshake then session->status will be ISSL_HANDSHAKEN.
510 if (session->status == ISSL_HANDSHAKEN)
512 // Is this right? Not sure if the unencrypted data is garaunteed to be the same length.
513 // Read into the inbuffer, offset from the beginning by the amount of data we have that insp hasn't taken yet.
514 int ret = gnutls_record_recv(session->sess, session->inbuf + session->inbufoffset, inbufsize - session->inbufoffset);
518 // Client closed connection.
520 CloseSession(session);
525 if (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED)
533 CloseSession(session);
538 // Read successfully 'ret' bytes into inbuf + inbufoffset
539 // There are 'ret' + 'inbufoffset' bytes of data in 'inbuf'
540 // 'buffer' is 'count' long
542 unsigned int length = ret + session->inbufoffset;
546 memcpy(buffer, session->inbuf, count);
547 // Move the stuff left in inbuf to the beginning of it
548 memmove(session->inbuf, session->inbuf + count, (length - count));
549 // Now we need to set session->inbufoffset to the amount of data still waiting to be handed to insp.
550 session->inbufoffset = length - count;
551 // Insp uses readresult as the count of how much data there is in buffer, so:
556 // There's not as much in the inbuf as there is space in the buffer, so just copy the whole thing.
557 memcpy(buffer, session->inbuf, length);
558 // Zero the offset, as there's nothing there..
559 session->inbufoffset = 0;
565 else if(session->status == ISSL_CLOSING)
571 virtual int OnRawSocketWrite(int fd, const char* buffer, int count)
573 /* Are there any possibilities of an out of range fd? Hope not, but lets be paranoid */
574 if ((fd < 0) || (fd > ServerInstance->SE->GetMaxFds() - 1))
577 issl_session* session = &sessions[fd];
578 const char* sendbuffer = buffer;
582 CloseSession(session);
586 session->outbuf.append(sendbuffer, count);
587 sendbuffer = session->outbuf.c_str();
588 count = session->outbuf.size();
590 if (session->status == ISSL_HANDSHAKING_WRITE)
592 // The handshake isn't finished, try to finish it.
600 if (session->status == ISSL_HANDSHAKEN)
602 ret = gnutls_record_send(session->sess, sendbuffer, count);
606 CloseSession(session);
610 if(ret != GNUTLS_E_AGAIN && ret != GNUTLS_E_INTERRUPTED)
612 CloseSession(session);
621 session->outbuf = session->outbuf.substr(ret);
625 MakePollWrite(session);
627 /* Who's smart idea was it to return 1 when we havent written anything?
628 * This fucks the buffer up in BufferedSocket :p
630 return ret < 1 ? 0 : ret;
633 // :kenny.chatspike.net 320 Om Epy|AFK :is a Secure Connection
634 virtual void OnWhois(User* source, User* dest)
639 // Bugfix, only send this numeric for *our* SSL users
640 if (dest->GetExt("ssl", dummy) || ((IS_LOCAL(dest) && (dest->io == this))))
642 ServerInstance->SendWhoisLine(source, dest, 320, "%s %s :is using a secure connection", source->nick.c_str(), dest->nick.c_str());
646 virtual void OnSyncUserMetaData(User* user, Module* proto, void* opaque, const std::string &extname, bool displayable)
648 // check if the linking module wants to know about OUR metadata
651 // check if this user has an swhois field to send
652 if(user->GetExt(extname, dummy))
654 // call this function in the linking module, let it format the data how it
655 // sees fit, and send it on its way. We dont need or want to know how.
656 proto->ProtoSendMetaData(opaque, TYPE_USER, user, extname, displayable ? "Enabled" : "ON");
661 virtual void OnDecodeMetaData(int target_type, void* target, const std::string &extname, const std::string &extdata)
663 // check if its our metadata key, and its associated with a user
664 if ((target_type == TYPE_USER) && (extname == "ssl"))
666 User* dest = (User*)target;
667 // if they dont already have an ssl flag, accept the remote server's
668 if (!dest->GetExt(extname, dummy))
670 dest->Extend(extname, "ON");
675 bool Handshake(issl_session* session)
677 int ret = gnutls_handshake(session->sess);
681 if(ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED)
683 // Handshake needs resuming later, read() or write() would have blocked.
685 if(gnutls_record_get_direction(session->sess) == 0)
687 // gnutls_handshake() wants to read() again.
688 session->status = ISSL_HANDSHAKING_READ;
692 // gnutls_handshake() wants to write() again.
693 session->status = ISSL_HANDSHAKING_WRITE;
694 MakePollWrite(session);
700 CloseSession(session);
701 session->status = ISSL_CLOSING;
708 // Handshake complete.
709 // This will do for setting the ssl flag...it could be done earlier if it's needed. But this seems neater.
710 User* extendme = ServerInstance->FindDescriptor(session->fd);
713 if (!extendme->GetExt("ssl", dummy))
714 extendme->Extend("ssl", "ON");
717 // Change the seesion state
718 session->status = ISSL_HANDSHAKEN;
720 // Finish writing, if any left
721 MakePollWrite(session);
727 virtual void OnPostConnect(User* user)
729 // This occurs AFTER OnUserConnect so we can be sure the
730 // protocol module has propagated the NICK message.
731 if ((user->GetExt("ssl", dummy)) && (IS_LOCAL(user)))
733 // Tell whatever protocol module we're using that we need to inform other servers of this metadata NOW.
734 ServerInstance->PI->SendMetaData(user, TYPE_USER, "SSL", "on");
736 VerifyCertificate(&sessions[user->GetFd()],user);
737 if (sessions[user->GetFd()].sess)
739 std::string cipher = gnutls_kx_get_name(gnutls_kx_get(sessions[user->GetFd()].sess));
740 cipher.append("-").append(gnutls_cipher_get_name(gnutls_cipher_get(sessions[user->GetFd()].sess))).append("-");
741 cipher.append(gnutls_mac_get_name(gnutls_mac_get(sessions[user->GetFd()].sess)));
742 user->WriteServ("NOTICE %s :*** You are connected using SSL cipher \"%s\"", user->nick.c_str(), cipher.c_str());
747 void MakePollWrite(issl_session* session)
749 //OnRawSocketWrite(session->fd, NULL, 0);
750 EventHandler* eh = ServerInstance->FindDescriptor(session->fd);
752 ServerInstance->SE->WantWrite(eh);
755 virtual void OnBufferFlushed(User* user)
757 if (user->GetExt("ssl"))
759 issl_session* session = &sessions[user->GetFd()];
760 if (session && session->outbuf.size())
761 OnRawSocketWrite(user->GetFd(), NULL, 0);
765 void CloseSession(issl_session* session)
769 gnutls_bye(session->sess, GNUTLS_SHUT_WR);
770 gnutls_deinit(session->sess);
775 delete[] session->inbuf;
778 session->outbuf.clear();
779 session->inbuf = NULL;
780 session->sess = NULL;
781 session->status = ISSL_NONE;
784 void VerifyCertificate(issl_session* session, Extensible* user)
786 if (!session->sess || !user)
790 const gnutls_datum_t* cert_list;
792 unsigned int cert_list_size;
793 gnutls_x509_crt_t cert;
795 unsigned char digest[MAXBUF];
796 size_t digest_size = sizeof(digest);
797 size_t name_size = sizeof(name);
798 ssl_cert* certinfo = new ssl_cert;
800 user->Extend("ssl_cert",certinfo);
802 /* This verification function uses the trusted CAs in the credentials
803 * structure. So you must have installed one or more CA certificates.
805 ret = gnutls_certificate_verify_peers2(session->sess, &status);
809 certinfo->data.insert(std::make_pair("error",std::string(gnutls_strerror(ret))));
813 if (status & GNUTLS_CERT_INVALID)
815 certinfo->data.insert(std::make_pair("invalid",ConvToStr(1)));
819 certinfo->data.insert(std::make_pair("invalid",ConvToStr(0)));
821 if (status & GNUTLS_CERT_SIGNER_NOT_FOUND)
823 certinfo->data.insert(std::make_pair("unknownsigner",ConvToStr(1)));
827 certinfo->data.insert(std::make_pair("unknownsigner",ConvToStr(0)));
829 if (status & GNUTLS_CERT_REVOKED)
831 certinfo->data.insert(std::make_pair("revoked",ConvToStr(1)));
835 certinfo->data.insert(std::make_pair("revoked",ConvToStr(0)));
837 if (status & GNUTLS_CERT_SIGNER_NOT_CA)
839 certinfo->data.insert(std::make_pair("trusted",ConvToStr(0)));
843 certinfo->data.insert(std::make_pair("trusted",ConvToStr(1)));
846 /* Up to here the process is the same for X.509 certificates and
847 * OpenPGP keys. From now on X.509 certificates are assumed. This can
848 * be easily extended to work with openpgp keys as well.
850 if (gnutls_certificate_type_get(session->sess) != GNUTLS_CRT_X509)
852 certinfo->data.insert(std::make_pair("error","No X509 keys sent"));
856 ret = gnutls_x509_crt_init(&cert);
859 certinfo->data.insert(std::make_pair("error",gnutls_strerror(ret)));
864 cert_list = gnutls_certificate_get_peers(session->sess, &cert_list_size);
865 if (cert_list == NULL)
867 certinfo->data.insert(std::make_pair("error","No certificate was found"));
871 /* This is not a real world example, since we only check the first
872 * certificate in the given chain.
875 ret = gnutls_x509_crt_import(cert, &cert_list[0], GNUTLS_X509_FMT_DER);
878 certinfo->data.insert(std::make_pair("error",gnutls_strerror(ret)));
882 gnutls_x509_crt_get_dn(cert, name, &name_size);
884 certinfo->data.insert(std::make_pair("dn",name));
886 gnutls_x509_crt_get_issuer_dn(cert, name, &name_size);
888 certinfo->data.insert(std::make_pair("issuer",name));
890 if ((ret = gnutls_x509_crt_get_fingerprint(cert, GNUTLS_DIG_MD5, digest, &digest_size)) < 0)
892 certinfo->data.insert(std::make_pair("error",gnutls_strerror(ret)));
896 certinfo->data.insert(std::make_pair("fingerprint",irc::hex(digest, digest_size)));
899 /* Beware here we do not check for errors.
901 if ((gnutls_x509_crt_get_expiration_time(cert) < time(0)) || (gnutls_x509_crt_get_activation_time(cert) > time(0)))
903 certinfo->data.insert(std::make_pair("error","Not activated, or expired certificate"));
906 gnutls_x509_crt_deinit(cert);
911 void OnEvent(Event* ev)
913 GenericCapHandler(ev, "tls", "tls");
918 Module* server = ServerInstance->Modules->Find("m_spanningtree.so");
919 ServerInstance->Modules->SetPriority(this, I_OnPostConnect, PRIO_AFTER, &server);
923 MODULE_INIT(ModuleSSLGnuTLS)