* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
- * InspIRCd: (C) 2002-2008 InspIRCd Development Team
- * See: http://www.inspircd.org/wiki/index.php/Credits
+ * InspIRCd: (C) 2002-2009 InspIRCd Development Team
+ * See: http://wiki.inspircd.org/Credits
*
* This program is free but copyrighted software; see
* the file COPYING for details.
*/
#include "inspircd.h"
-
#include <gnutls/gnutls.h>
#include <gnutls/x509.h>
-
-#include "inspircd_config.h"
-#include "configreader.h"
-#include "users.h"
-#include "channels.h"
-#include "modules.h"
-#include "socket.h"
-#include "hashcomp.h"
#include "transport.h"
#include "m_cap.h"
#ifdef WINDOWS
#pragma comment(lib, "libgnutls-13.lib")
-#undef MAX_DESCRIPTORS
-#define MAX_DESCRIPTORS 10000
#endif
/* $ModDesc: Provides SSL support for clients */
-/* $CompileFlags: exec("libgnutls-config --cflags") */
-/* $LinkerFlags: rpath("libgnutls-config --libs") exec("libgnutls-config --libs") */
+/* $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(std::string hostandport, const std::vector<std::string> &portlist)
+static gnutls_x509_crt_t x509_cert;
+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) {
+
+ st->type = GNUTLS_CRT_X509;
+ st->ncerts = 1;
+ st->cert.x509 = &x509_cert;
+ st->key.x509 = 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)
{
- return std::find(portlist.begin(), portlist.end(), hostandport) != portlist.end();
+ 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)
+{
+ StreamSocket* user = reinterpret_cast<StreamSocket*>(user_wrap);
+ if (user->GetEventMask() & FD_WRITE_WILL_BLOCK)
+ {
+ errno = EAGAIN;
+ return -1;
+ }
+ 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 classbase
{
public:
+ issl_session()
+ {
+ sess = NULL;
+ }
+
gnutls_session_t sess;
issl_status status;
- std::string outbuf;
- int inbufoffset;
- char* inbuf;
- int fd;
};
class CommandStartTLS : public Command
{
- Module* Caller;
public:
- /* Command 'dalinfo', takes no parameters and needs no special modes */
- CommandStartTLS (InspIRCd* Instance, Module* mod) : Command(Instance,"STARTTLS", 0, 0, true), Caller(mod)
+ CommandStartTLS (Module* mod) : Command(mod, "STARTTLS")
{
- this->source = "m_ssl_gnutls.so";
+ works_before_reg = true;
}
- CmdResult Handle (const char* const* parameters, int pcnt, User *user)
+ CmdResult Handle (const std::vector<std::string> ¶meters, User *user)
{
- if (!user->GetExt("tls"))
- return CMD_FAILURE;
-
- user->io = Caller;
- Caller->OnRawSocketAccept(user->GetFd(), user->GetIPString(), user->GetPort());
+ /* 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)
+ {
+ user->WriteNumeric(691, "%s :STARTTLS is not permitted after client registration has started", user->nick.c_str());
+ }
+ else
+ {
+ if (!user->GetIOHook())
+ {
+ user->WriteNumeric(670, "%s :STARTTLS successful, go ahead with TLS handshake", user->nick.c_str());
+ user->AddIOHook(creator);
+ creator->OnStreamSocketAccept(user, NULL, NULL);
+ }
+ else
+ user->WriteNumeric(691, "%s :STARTTLS failure", user->nick.c_str());
+ }
return CMD_FAILURE;
}
class ModuleSSLGnuTLS : public Module
{
+ std::set<ListenSocketBase*> listenports;
- ConfigReader* Conf;
-
- char* dummy;
-
- std::vector<std::string> listenports;
-
- int inbufsize;
- issl_session sessions[MAX_DESCRIPTORS];
+ issl_session* sessions;
gnutls_certificate_credentials x509_cred;
gnutls_dh_params dh_params;
std::string sslports;
int dh_bits;
- int clientactive;
+ bool cred_alloc;
- CommandStartTLS* starttls;
+ CommandStartTLS starttls;
+ GenericCap capHandler;
public:
- ModuleSSLGnuTLS(InspIRCd* Me)
- : Module(Me)
+ ModuleSSLGnuTLS()
+ : starttls(this), capHandler(this, "tls")
{
ServerInstance->Modules->PublishInterface("BufferedSocketHook", this);
- // Not rehashable...because I cba to reduce all the sizes of existing buffers.
- inbufsize = ServerInstance->Config->NetBufferSize;
+ 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);
- if(gnutls_certificate_allocate_credentials(&x509_cred) != 0)
- ServerInstance->Logs->Log("m_ssl_gnutls",DEFAULT, "m_ssl_gnutls.so: Failed to allocate certificate credentials");
-
- // Guessing return meaning
- if(gnutls_dh_params_init(&dh_params) < 0)
- ServerInstance->Logs->Log("m_ssl_gnutls",DEFAULT, "m_ssl_gnutls.so: Failed to initialise DH parameters");
-
+ cred_alloc = false;
// Needs the flag as it ignores a plain /rehash
- OnRehash(NULL,"ssl");
+ OnModuleRehash(NULL,"ssl");
// 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_OnSyncUserMetaData, I_OnDecodeMetaData, I_OnUnloadModule, I_OnRehash, I_OnWhois, I_OnPostConnect, I_OnEvent, I_OnHookUserIO };
- ServerInstance->Modules->Attach(eventlist, this, 17);
+ Implementation eventlist[] = { I_On005Numeric, I_OnRequest, I_OnRehash, I_OnModuleRehash, I_OnPostConnect,
+ I_OnEvent, I_OnHookIO };
+ ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
- starttls = new CommandStartTLS(ServerInstance, this);
- ServerInstance->AddCommand(starttls);
+ ServerInstance->AddCommand(&starttls);
}
- virtual void OnRehash(User* user, const std::string ¶m)
+ void OnRehash(User* user)
{
- Conf = new ConfigReader(ServerInstance);
+ ConfigReader Conf;
listenports.clear();
- clientactive = 0;
sslports.clear();
- for(int index = 0; index < Conf->Enumerate("bind"); index++)
+ for (size_t i = 0; i < ServerInstance->ports.size(); i++)
{
- // For each <bind> tag
- std::string x = Conf->ReadValue("bind", "type", index);
- if(((x.empty()) || (x == "clients")) && (Conf->ReadValue("bind", "ssl", index) == "gnutls"))
- {
- // 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);
+ ListenSocketBase* port = ServerInstance->ports[i];
+ std::string desc = port->GetDescription();
+ if (desc != "gnutls")
+ continue;
- 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->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_gnutls",DEFAULT, "m_ssl_gnutls.so: Enabling SSL for port %d", portno);
+ listenports.insert(port);
+ std::string portid = port->GetBindDesc();
- 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 %d: %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());
- }
- }
- }
+ ServerInstance->Logs->Log("m_ssl_gnutls", DEFAULT, "m_ssl_gnutls.so: Enabling SSL for port %s", portid.c_str());
+ if (port->GetIP() != "127.0.0.1")
+ sslports.append(portid).append(";");
}
+ if (!sslports.empty())
+ sslports.erase(sslports.end() - 1);
+ }
+
+ void OnModuleRehash(User* user, const std::string ¶m)
+ {
if(param != "ssl")
- {
- delete Conf;
return;
- }
+
+ OnRehash(user);
+
+ ConfigReader Conf;
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);
+ 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())
dh_bits = 1024;
// Prepend relative paths with the path to the config directory.
- if(cafile[0] != '/')
+ if ((cafile[0] != '/') && (!ServerInstance->Config->StartsWithWindowsDriveLetter(cafile)))
cafile = confdir + cafile;
- if(crlfile[0] != '/')
+ if ((crlfile[0] != '/') && (!ServerInstance->Config->StartsWithWindowsDriveLetter(crlfile)))
crlfile = confdir + crlfile;
- if(certfile[0] != '/')
+ if ((certfile[0] != '/') && (!ServerInstance->Config->StartsWithWindowsDriveLetter(certfile)))
certfile = confdir + certfile;
- if(keyfile[0] != '/')
+ if ((keyfile[0] != '/') && (!ServerInstance->Config->StartsWithWindowsDriveLetter(keyfile)))
keyfile = confdir + keyfile;
int ret;
+ if (cred_alloc)
+ {
+ // Deallocate the old credentials
+ gnutls_dh_params_deinit(dh_params);
+ gnutls_certificate_free_credentials(x509_cred);
+ }
+ 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",DEFAULT, "m_ssl_gnutls.so: Failed to set X.509 trust file '%s': %s", cafile.c_str(), gnutls_strerror(ret));
+ 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",DEFAULT, "m_ssl_gnutls.so: Failed to set X.509 CRL file '%s': %s", crlfile.c_str(), gnutls_strerror(ret));
+ 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: " + std::string(gnutls_strerror(ret)));
- }
+ FileReader reader(ServerInstance);
+
+ 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
+ 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)));
+
+ 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)
+ 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();
-
- delete Conf;
}
void 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_x509_crt_deinit(x509_cert);
+ gnutls_x509_privkey_deinit(x509_key);
gnutls_dh_params_deinit(dh_params);
gnutls_certificate_free_credentials(x509_cred);
gnutls_global_deinit();
+ ServerInstance->Modules->UnpublishInterface("BufferedSocketHook", this);
+ delete[] sessions;
}
- virtual void OnCleanup(int target_type, void* item)
+ void OnCleanup(int target_type, void* item)
{
if(target_type == TYPE_USER)
{
- User* user = (User*)item;
+ User* user = static_cast<User*>(item);
- if(user->io)
+ 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.
- User::QuitUser(ServerInstance, user, "SSL module unloading");
- }
- if (user->GetExt("ssl_cert", dummy))
- {
- ssl_cert* tofree;
- user->GetExt("ssl_cert", tofree);
- delete tofree;
- user->Shrink("ssl_cert");
+ ServerInstance->Users->QuitUser(user, "SSL module unloading");
+ user->DelIOHook();
}
-
- user->io = NULL;
}
}
- 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->Config->ports.size(); j++)
- if (listenports[i] == (ServerInstance->Config->ports[j]->GetIP()+":"+ConvToStr(ServerInstance->Config->ports[j]->GetPort())))
- ServerInstance->Config->ports[j]->SetDescription("plaintext");
- }
- }
+ return Version("Provides SSL support for clients", VF_VENDOR, API_VERSION);
}
- virtual Version GetVersion()
- {
- return Version(1, 2, 0, 0, VF_VENDOR, API_VERSION);
- }
-
- virtual void On005Numeric(std::string &output)
+ void On005Numeric(std::string &output)
{
- output.append(" SSL=" + sslports);
+ if (!sslports.empty())
+ output.append(" SSL=" + sslports);
+ output.append(" STARTTLS");
}
- virtual void OnHookUserIO(User* user, const std::string &targetip)
+ void OnHookIO(StreamSocket* user, ListenSocketBase* lsb)
{
- ServerInstance->Logs->Log("m_ssl_gnutls", DEBUG, "*** OnHookUserIO, target IP = %s", targetip.c_str());
- if (!user->io && isin(targetip+":"+ConvToStr(user->GetPort()),listenports))
+ if (!user->GetIOHook() && listenports.find(lsb) != listenports.end())
{
/* Hook the user with our module */
- user->io = this;
+ user->AddIOHook(this);
}
}
- virtual const char* OnRequest(Request* request)
+ const char* OnRequest(Request* request)
{
- ISHRequest* ISR = (ISHRequest*)request;
+ ISHRequest* ISR = static_cast<ISHRequest*>(request);
if (strcmp("IS_NAME", request->GetId()) == 0)
{
return "gnutls";
}
else if (strcmp("IS_HOOK", request->GetId()) == 0)
{
- const char* ret = "OK";
- try
- {
- ret = ServerInstance->Config->AddIOHook((Module*)this, (BufferedSocket*)ISR->Sock) ? "OK" : NULL;
- }
- catch (ModuleException &e)
- {
- return NULL;
- }
- return ret;
+ ISR->Sock->AddIOHook(this);
+ return "OK";
}
else if (strcmp("IS_UNHOOK", request->GetId()) == 0)
{
- return ServerInstance->Config->DelIOHook((BufferedSocket*)ISR->Sock) ? "OK" : NULL;
+ ISR->Sock->DelIOHook();
+ return "OK";
}
else if (strcmp("IS_HSDONE", request->GetId()) == 0)
{
issl_session* session = &sessions[ISR->Sock->GetFd()];
if (session->sess)
{
- if ((Extensible*)ServerInstance->FindDescriptor(ISR->Sock->GetFd()) == (Extensible*)(ISR->Sock))
+ if (static_cast<Extensible*>(ServerInstance->SE->GetRef(ISR->Sock->GetFd())) == static_cast<Extensible*>(ISR->Sock))
{
- VerifyCertificate(session, (BufferedSocket*)ISR->Sock);
return "OK";
}
}
}
}
+ else if (strcmp("GET_CERT", request->GetId()) == 0)
+ {
+ Module* sslinfo = ServerInstance->Modules->Find("m_sslinfo.so");
+ if (sslinfo)
+ return sslinfo->OnRequest(request);
+ }
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 > MAX_DESCRIPTORS))
- return;
-
+ int fd = user->GetFd();
issl_session* session = &sessions[fd];
- session->fd = fd;
- session->inbuf = new char[inbufsize];
- session->inbufoffset = 0;
+ /* For STARTTLS: Don't try and init a session on a socket that already has a session */
+ if (session->sess)
+ return;
gnutls_init(&session->sess, GNUTLS_SERVER);
gnutls_credentials_set(session->sess, GNUTLS_CRD_CERTIFICATE, x509_cred);
gnutls_dh_set_prime_bits(session->sess, dh_bits);
- /* This is an experimental change to avoid a warning on 64bit systems about casting between integer and pointer of different sizes
- * This needs testing, but it's easy enough to rollback if need be
- * Old: gnutls_transport_set_ptr(session->sess, (gnutls_transport_ptr_t) fd); // Give gnutls the fd for the socket.
- * New: gnutls_transport_set_ptr(session->sess, &fd); // Give gnutls the fd for the socket.
- *
- * With testing this seems to...not work :/
- */
-
- 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);
+ 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 > MAX_DESCRIPTORS))
- return;
-
- issl_session* session = &sessions[fd];
-
- session->fd = fd;
- session->inbuf = new char[inbufsize];
- session->inbufoffset = 0;
+ 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);
+ 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 > MAX_DESCRIPTORS))
- 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");
- }
+ 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 > MAX_DESCRIPTORS))
- 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))
+ if(!Handshake(session, user))
{
- // Couldn't resume handshake.
+ if (session->status != ISSL_CLOSING)
+ return 0;
+ user->SetError("Handshake Failed");
return -1;
}
}
- else if (session->status == ISSL_HANDSHAKING_WRITE)
- {
- errno = EAGAIN;
- MakePollWrite(session);
- return -1;
- }
// If we resumed the handshake then session->status will be ISSL_HANDSHAKEN.
if (session->status == ISSL_HANDSHAKEN)
{
- // 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 = gnutls_record_recv(session->sess, session->inbuf + session->inbufoffset, inbufsize - session->inbufoffset);
-
- if (ret == 0)
+ char* buffer = ServerInstance->GetReadBuffer();
+ size_t bufsiz = ServerInstance->Config->NetBufferSize;
+ int ret = gnutls_record_recv(session->sess, buffer, bufsiz);
+ if (ret > 0)
{
- // Client closed connection.
- readresult = 0;
- CloseSession(session);
+ recvq.append(buffer, ret);
return 1;
}
- else if (ret < 0)
+ else if (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED)
{
- if (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED)
- {
- errno = EAGAIN;
- return -1;
- }
- else
- {
- readresult = 0;
- CloseSession(session);
- }
+ return 0;
+ }
+ else if (ret == 0)
+ {
+ user->SetError("SSL Connection closed");
+ CloseSession(session);
+ return -1;
}
else
{
- // Read successfully 'ret' bytes into inbuf + inbufoffset
- // There are 'ret' + 'inbufoffset' bytes of data in 'inbuf'
- // 'buffer' is 'count' long
-
- unsigned int length = ret + session->inbufoffset;
-
- if(count <= length)
- {
- memcpy(buffer, session->inbuf, count);
- // Move the stuff left in inbuf to the beginning of it
- memcpy(session->inbuf, session->inbuf + count, (length - count));
- // Now we need to set session->inbufoffset to the amount of data still waiting to be handed to insp.
- session->inbufoffset = length - 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, length);
- // Zero the offset, as there's nothing there..
- session->inbufoffset = 0;
- // As above
- readresult = length;
- }
+ user->SetError(gnutls_strerror(ret));
+ CloseSession(session);
+ return -1;
}
}
- else if(session->status == ISSL_CLOSING)
- readresult = 0;
+ else if (session->status == ISSL_CLOSING)
+ 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 > MAX_DESCRIPTORS))
- 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)
+ if (session->status == ISSL_HANDSHAKING_WRITE || session->status == ISSL_HANDSHAKING_READ)
{
// The handshake isn't finished, try to finish it.
- Handshake(session);
- errno = EAGAIN;
+ Handshake(session, user);
+ if (session->status != ISSL_CLOSING)
+ return 0;
+ user->SetError("Handshake Failed");
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)
- {
- 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)
{
- session->outbuf = session->outbuf.substr(ret);
+ ServerInstance->SE->ChangeEventMask(user, FD_WANT_SINGLE_WRITE);
+ return 0;
}
- }
-
- MakePollWrite(session);
-
- /* 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;
- }
-
- // :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) || ((IS_LOCAL(dest) && (dest->io == this))))
- {
- ServerInstance->SendWhoisLine(source, dest, 320, "%s %s :is using a secure connection", source->nick, dest->nick);
- }
- }
-
- 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");
+ CloseSession(session);
+ user->SetError("SSL Connection closed");
+ return -1;
}
- }
- }
-
- 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))
+ else // (ret < 0)
{
- dest->Extend(extname, "ON");
+ user->SetError(gnutls_strerror(ret));
+ CloseSession(session);
+ return -1;
}
}
+
+ return 0;
}
- bool Handshake(issl_session* session)
+ 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(session);
+ ServerInstance->SE->ChangeEventMask(user, FD_WANT_NO_READ | FD_WANT_SINGLE_WRITE);
}
}
else
{
- // Handshake failed.
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.
- User* extendme = ServerInstance->FindDescriptor(session->fd);
- if (extendme)
- {
- if (!extendme->GetExt("ssl", dummy))
- extendme->Extend("ssl", "ON");
- }
-
// Change the seesion state
session->status = ISSL_HANDSHAKEN;
+ VerifyCertificate(session,user);
+
// Finish writing, if any left
- MakePollWrite(session);
+ ServerInstance->SE->ChangeEventMask(user, FD_WANT_POLL_READ | FD_WANT_NO_WRITE | FD_ADD_TRIAL_WRITE);
return true;
}
}
- virtual void OnPostConnect(User* user)
+ void OnPostConnect(User* user)
{
// This occurs AFTER OnUserConnect so we can be sure the
// protocol module has propagated the NICK message.
- if ((user->GetExt("ssl", dummy)) && (IS_LOCAL(user)))
+ 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.
- std::deque<std::string>* metadata = new std::deque<std::string>;
- metadata->push_back(user->nick);
- metadata->push_back("ssl"); // The metadata id
- metadata->push_back("ON"); // The value to send
- Event* event = new Event((char*)metadata,(Module*)this,"send_metadata");
- event->Send(ServerInstance); // Trigger the event. We don't care what module picks it up.
- delete event;
- delete metadata;
-
- VerifyCertificate(&sessions[user->GetFd()],user);
if (sessions[user->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, cipher.c_str());
+ user->WriteServ("NOTICE %s :*** You are connected using SSL cipher \"%s\"", user->nick.c_str(), cipher.c_str());
}
}
}
- void MakePollWrite(issl_session* session)
- {
- //OnRawSocketWrite(session->fd, NULL, 0);
- EventHandler* eh = ServerInstance->FindDescriptor(session->fd);
- if (eh)
- ServerInstance->SE->WantWrite(eh);
- }
-
- virtual void OnBufferFlushed(User* user)
- {
- if (user->GetExt("ssl"))
- {
- issl_session* session = &sessions[user->GetFd()];
- if (session && session->outbuf.size())
- OnRawSocketWrite(user->GetFd(), NULL, 0);
- }
- }
-
void CloseSession(issl_session* session)
{
if(session->sess)
gnutls_deinit(session->sess);
}
- if(session->inbuf)
- {
- delete[] session->inbuf;
- }
-
- session->outbuf.clear();
- session->inbuf = NULL;
session->sess = NULL;
session->status = ISSL_NONE;
}
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 name_size = sizeof(name);
ssl_cert* certinfo = new ssl_cert;
- user->Extend("ssl_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->data.insert(std::make_pair("error",std::string(gnutls_strerror(ret))));
- return;
+ certinfo->error = std::string(gnutls_strerror(ret));
+ goto info_done;
}
- if (status & GNUTLS_CERT_INVALID)
- {
- certinfo->data.insert(std::make_pair("invalid",ConvToStr(1)));
- }
- else
- {
- certinfo->data.insert(std::make_pair("invalid",ConvToStr(0)));
- }
- if (status & GNUTLS_CERT_SIGNER_NOT_FOUND)
- {
- certinfo->data.insert(std::make_pair("unknownsigner",ConvToStr(1)));
- }
- else
- {
- certinfo->data.insert(std::make_pair("unknownsigner",ConvToStr(0)));
- }
- if (status & GNUTLS_CERT_REVOKED)
- {
- certinfo->data.insert(std::make_pair("revoked",ConvToStr(1)));
- }
- else
- {
- certinfo->data.insert(std::make_pair("revoked",ConvToStr(0)));
- }
- if (status & GNUTLS_CERT_SIGNER_NOT_CA)
- {
- certinfo->data.insert(std::make_pair("trusted",ConvToStr(0)));
- }
- else
- {
- certinfo->data.insert(std::make_pair("trusted",ConvToStr(1)));
- }
+ certinfo->invalid = (status & GNUTLS_CERT_INVALID);
+ certinfo->unknownsigner = (status & GNUTLS_CERT_SIGNER_NOT_FOUND);
+ certinfo->revoked = (status & GNUTLS_CERT_REVOKED);
+ certinfo->trusted = !(status & GNUTLS_CERT_SIGNER_NOT_CA);
/* Up to here the process is the same for X.509 certificates and
* OpenPGP keys. From now on X.509 certificates are assumed. This can
*/
if (gnutls_certificate_type_get(session->sess) != GNUTLS_CRT_X509)
{
- certinfo->data.insert(std::make_pair("error","No X509 keys sent"));
- return;
+ certinfo->error = "No X509 keys sent";
+ goto info_done;
}
ret = gnutls_x509_crt_init(&cert);
if (ret < 0)
{
- certinfo->data.insert(std::make_pair("error",gnutls_strerror(ret)));
- return;
+ certinfo->error = gnutls_strerror(ret);
+ goto info_done;
}
cert_list_size = 0;
cert_list = gnutls_certificate_get_peers(session->sess, &cert_list_size);
if (cert_list == NULL)
{
- certinfo->data.insert(std::make_pair("error","No certificate was found"));
- return;
+ certinfo->error = "No certificate was found";
+ goto info_done_dealloc;
}
/* This is not a real world example, since we only check the first
ret = gnutls_x509_crt_import(cert, &cert_list[0], GNUTLS_X509_FMT_DER);
if (ret < 0)
{
- certinfo->data.insert(std::make_pair("error",gnutls_strerror(ret)));
- return;
+ certinfo->error = gnutls_strerror(ret);
+ goto info_done_dealloc;
}
gnutls_x509_crt_get_dn(cert, name, &name_size);
-
- certinfo->data.insert(std::make_pair("dn",name));
+ certinfo->dn = name;
gnutls_x509_crt_get_issuer_dn(cert, name, &name_size);
-
- certinfo->data.insert(std::make_pair("issuer",name));
+ certinfo->issuer = name;
if ((ret = gnutls_x509_crt_get_fingerprint(cert, GNUTLS_DIG_MD5, digest, &digest_size)) < 0)
{
- certinfo->data.insert(std::make_pair("error",gnutls_strerror(ret)));
+ certinfo->error = gnutls_strerror(ret);
}
else
{
- certinfo->data.insert(std::make_pair("fingerprint",irc::hex(digest, digest_size)));
+ certinfo->fingerprint = irc::hex(digest, digest_size);
}
/* Beware here we do not check for errors.
*/
- if ((gnutls_x509_crt_get_expiration_time(cert) < time(0)) || (gnutls_x509_crt_get_activation_time(cert) > time(0)))
+ if ((gnutls_x509_crt_get_expiration_time(cert) < ServerInstance->Time()) || (gnutls_x509_crt_get_activation_time(cert) > ServerInstance->Time()))
{
- certinfo->data.insert(std::make_pair("error","Not activated, or expired certificate"));
+ certinfo->error = "Not activated, or expired certificate";
}
+info_done_dealloc:
gnutls_x509_crt_deinit(cert);
-
- return;
+info_done:
+ BufferedSocketFingerprintSubmission(user, this, sslinfo, certinfo).Send();
}
void OnEvent(Event* ev)
{
- GenericCapHandler(ev, "tls", "tls");
+ capHandler.HandleEvent(ev);
}
-
};
MODULE_INIT(ModuleSSLGnuTLS)
projects / user / henk / code / inspircd.git / blobdiff