/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* InspIRCd: (C) 2002-2011 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 <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") -lgcrypt */
namespace GnuTLS
{
enum issl_status { ISSL_NONE, ISSL_HANDSHAKING, ISSL_HANDSHAKEN, ISSL_CLOSING, ISSL_CLOSED };
static gnutls_digest_algorithm_t hash;
#define GNUTLS_HAS_PRIORITY (GNUTLS_VERSION_MAJOR > 2 || (GNUTLS_VERSION_MAJOR == 2 && GNUTLS_VERSION_MINOR >= 2))
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);
struct DH_info : public refcountbase
{
int bits;
gnutls_dh_params params;
DH_info()
{
gnutls_dh_params_init(¶ms);
bits = gnutls_sec_param_to_pk_bits(GNUTLS_PK_DH, GNUTLS_SEC_PARAM_NORMAL);
int ret = gnutls_dh_params_generate2(params, bits);
if (ret < 0)
ServerInstance->Logs->Log("m_ssl_gnutls",DEFAULT, "m_ssl_gnutls.so: Failed to generate DH parameters (%d bits): %s",
bits, gnutls_strerror(ret));
}
~DH_info()
{
gnutls_dh_params_deinit(params);
}
};
struct x509_key : public refcountbase
{
gnutls_x509_privkey_t x509;
x509_key(const std::string& pem)
{
gnutls_datum_t key_datum = { (unsigned char*)pem.data(), pem.length() };
int ret = gnutls_x509_privkey_init(&x509);
if (ret < 0)
throw ModuleException("GnuTLS memory allocation error " + std::string(gnutls_strerror(ret)));
ret = gnutls_x509_privkey_import(x509, &key_datum, GNUTLS_X509_FMT_PEM);
if (ret < 0)
throw ModuleException("Unable to load GnuTLS server private key: " + std::string(gnutls_strerror(ret)));
}
~x509_key()
{
gnutls_x509_privkey_deinit(x509);
}
};
struct x509_crt_list : public refcountbase
{
std::vector<gnutls_x509_crt_t> list;
x509_crt_list(const std::string& pem)
{
gnutls_datum_t cert_datum = { (unsigned char*)pem.data(), pem.length() };
unsigned int certcount = 100;
list.resize(certcount);
int ret = gnutls_x509_crt_list_import(data(), &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 certificates: " + std::string(gnutls_strerror(ret)));
list.resize(certcount);
}
inline gnutls_x509_crt_t* data()
{
return &list[0];
}
inline int count()
{
return list.size();
}
~x509_crt_list()
{
for(unsigned int i=0; i < list.size(); i++)
gnutls_x509_crt_deinit(list[i]);
}
};
struct x509_crl_list : public refcountbase
{
std::vector<gnutls_x509_crl_t> list;
x509_crl_list(const std::string& pem)
{
std::string::size_type pos = 0;
while (1)
{
pos = pem.find("-----BEGIN", pos);
if (pos == std::string::npos)
break;
gnutls_x509_crl_t item;
gnutls_x509_crl_init(&item);
gnutls_datum_t datum = { (unsigned char*)pem.data() + pos, pem.length() - pos };
int ret = gnutls_x509_crl_import(item, &datum, GNUTLS_X509_FMT_PEM);
if (ret < 0)
throw ModuleException("Unable to load GnuTLS CRL: " + std::string(gnutls_strerror(ret)));
list.push_back(item);
pos++;
}
}
inline gnutls_x509_crl_t* data()
{
return &list[0];
}
inline int count()
{
return list.size();
}
~x509_crl_list()
{
for(unsigned int i=0; i < list.size(); i++)
gnutls_x509_crl_deinit(list[i]);
}
};
struct x509_cred : public refcountbase
{
reference<ConfigTag> tag;
reference<x509_key> key;
reference<x509_crt_list> certs;
reference<x509_crt_list> ca_list;
reference<x509_crl_list> crl_list;
reference<DH_info> dh;
gnutls_certificate_credentials cred;
#if GNUTLS_HAS_PRIORITY
gnutls_priority_t cipher_prio;
#endif
bool gnutlsonly;
x509_cred(ConfigTag* Tag, x509_crt_list* CA, x509_crl_list* CRL, DH_info* DH)
: tag(Tag), ca_list(CA), crl_list(CRL), dh(DH)
{
FileReader reader;
errno = 0;
reader.LoadFile(tag->getString("certfile", "conf/cert.pem"));
std::string cert_string = reader.Contents();
if (cert_string.empty())
throw ModuleException("Unable to read GnuTLS server certificates from " +
tag->getString("certfile", "conf/cert.pem") + ": " + (errno ? strerror(errno) : "Unknown error"));
errno = 0;
reader.LoadFile(tag->getString("keyfile", "conf/key.pem"));
std::string key_string = reader.Contents();
if (key_string.empty())
throw ModuleException("Unable to read GnuTLS private key from " +
tag->getString("keyfile", "conf/key.pem") + ": " + (errno ? strerror(errno) : "Unknown error"));
key = new x509_key(key_string);
certs = new x509_crt_list(cert_string);
std::string ca_fn;
if (tag->readString("cafile", ca_fn))
{
reader.LoadFile(ca_fn);
std::string ca_string = reader.Contents();
ca_list = new x509_crt_list(ca_string);
}
init();
}
x509_cred(x509_cred* src, DH_info* DH)
: tag(src->tag), key(src->key), certs(src->certs),
ca_list(src->ca_list), crl_list(src->crl_list), dh(DH)
{
init();
}
void init()
{
int ret;
ret = gnutls_certificate_allocate_credentials(&cred);
if (ret < 0)
throw ModuleException("GnuTLS memory allocation error " + std::string(gnutls_strerror(ret)));
ret = gnutls_certificate_set_x509_key(cred, certs->data(), certs->count(), key->x509);
if (ret < 0)
throw ModuleException("Unable to set GnuTLS cert/key pair: " + std::string(gnutls_strerror(ret)));
if (ca_list)
{
ret = gnutls_certificate_set_x509_trust(cred, ca_list->data(), ca_list->count());
if (ret < 0)
ServerInstance->Logs->Log("m_ssl_gnutls",DEBUG, "m_ssl_gnutls.so: Could not set X.509 trust file: %s", gnutls_strerror(ret));
}
if (crl_list)
{
ret = gnutls_certificate_set_x509_crl(cred, crl_list->data(), crl_list->count());
if (ret < 0)
ServerInstance->Logs->Log("m_ssl_gnutls",DEBUG, "m_ssl_gnutls.so: Failed to set X.509 CRL file: %s", gnutls_strerror(ret));
}
#if GNUTLS_HAS_PRIORITY
std::string prios = tag->getString("prio", "NORMAL:+COMP-DEFLATE");
const char* errpos = NULL;
ret = gnutls_priority_init(&cipher_prio, prios.c_str(), &errpos);
if (ret != GNUTLS_E_SUCCESS)
throw ModuleException("Bad GnuTLS priority settings: " + std::string(gnutls_strerror(ret)));
#endif
gnutlsonly = tag->getBool("gnutls_only");
gnutls_certificate_set_dh_params(cred, dh->params);
gnutls_certificate_client_set_retrieve_function (cred, cert_callback);
}
~x509_cred()
{
#if GNUTLS_HAS_PRIORITY
gnutls_priority_deinit(cipher_prio);
#endif
gnutls_certificate_free_credentials(cred);
}
};
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 < 0)
{
if (errno == EAGAIN || errno == EINTR)
ServerInstance->SE->ChangeEventMask(user, FD_READ_WILL_BLOCK);
else
user->SetError(strerror(errno));
}
else if (rv == 0)
user->SetError("Connection Closed");
else 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 < 0)
{
if (errno == EAGAIN || errno == EINTR)
ServerInstance->SE->ChangeEventMask(user, FD_WRITE_WILL_BLOCK);
else
user->SetError(strerror(errno));
}
else 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)
{
gcry_randomize(buffer, len, GCRY_STRONG_RANDOM);
}
};
class GnuTLSHook : public SSLIOHook
{
public:
gnutls_session_t sess;
issl_status status;
reference<ssl_cert> cert;
reference<x509_cred> creds;
GnuTLSHook(Module* Creator, bool client, StreamSocket* user, x509_cred* mycert)
: SSLIOHook(Creator), sess(NULL), status(ISSL_HANDSHAKING), creds(mycert)
{
int rv;
rv = gnutls_init(&sess, client ? GNUTLS_CLIENT : GNUTLS_SERVER);
if (rv < 0)
throw ModuleException("Cannot init");
if (mycert->gnutlsonly)
gnutls_handshake_set_private_extensions(sess, 1);
#if GNUTLS_HAS_PRIORITY
rv = gnutls_priority_set(sess, creds->cipher_prio);
#else
rv = gnutls_set_default_priority(sess);
#endif
if (rv < 0)
throw ModuleException("Cannot set cipher priorities");
rv = gnutls_credentials_set(sess, GNUTLS_CRD_CERTIFICATE, creds->cred);
if (rv < 0)
throw ModuleException("Cannot set credentials");
gnutls_dh_set_prime_bits(sess, creds->dh->bits);
gnutls_transport_set_ptr(sess, reinterpret_cast<void*>(user));
gnutls_transport_set_push_function(sess, gnutls_push_wrapper);
gnutls_transport_set_pull_function(sess, gnutls_pull_wrapper);
if (!client)
gnutls_certificate_server_set_request(sess, GNUTLS_CERT_REQUEST); // Request client certificate if any.
user->SetIOHook(this);
}
~GnuTLSHook()
{
OnClose(NULL);
}
std::string GetFingerprint()
{
if (cert)
return cert->GetFingerprint();
return "";
}
void OnClose(StreamSocket* user)
{
if (sess)
{
gnutls_bye(sess, GNUTLS_SHUT_WR);
gnutls_deinit(sess);
}
sess = NULL;
cert = NULL;
status = ISSL_NONE;
}
void VerifyCertificate(StreamSocket* user)
{
unsigned int result;
const gnutls_datum_t* cert_list;
int ret;
unsigned int cert_list_size;
gnutls_x509_crt_t raw_cert;
char name[MAXBUF];
unsigned char digest[MAXBUF];
size_t digest_size = sizeof(digest);
size_t name_size = sizeof(name);
ssl_cert* certinfo = new ssl_cert;
cert = certinfo;
/* This verification function uses the trusted CAs in the credentials
* structure. So you must have installed one or more CA certificates.
*/
ret = gnutls_certificate_verify_peers2(sess, &result);
if (ret < 0)
{
certinfo->error = std::string(gnutls_strerror(ret));
return;
}
certinfo->invalid = (result & GNUTLS_CERT_INVALID);
certinfo->unknownsigner = (result & GNUTLS_CERT_SIGNER_NOT_FOUND);
certinfo->revoked = (result & GNUTLS_CERT_REVOKED);
certinfo->trusted = !(result & 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
* be easily extended to work with openpgp keys as well.
*/
if (gnutls_certificate_type_get(sess) != GNUTLS_CRT_X509)
{
certinfo->error = "No X509 keys sent";
return;
}
ret = gnutls_x509_crt_init(&raw_cert);
if (ret < 0)
{
certinfo->error = gnutls_strerror(ret);
return;
}
cert_list_size = 0;
cert_list = gnutls_certificate_get_peers(sess, &cert_list_size);
if (cert_list == NULL)
{
certinfo->error = "No certificate was found";
}
else
{
/* This is not a real world example, since we only check the first
* certificate in the given chain.
*/
ret = gnutls_x509_crt_import(raw_cert, &cert_list[0], GNUTLS_X509_FMT_DER);
if (ret < 0)
{
certinfo->error = gnutls_strerror(ret);
}
else
{
gnutls_x509_crt_get_dn(raw_cert, name, &name_size);
certinfo->dn = name;
gnutls_x509_crt_get_issuer_dn(raw_cert, name, &name_size);
certinfo->issuer = name;
if ((ret = gnutls_x509_crt_get_fingerprint(raw_cert, hash, digest, &digest_size)) < 0)
{
certinfo->error = gnutls_strerror(ret);
}
else
{
certinfo->fingerprint = irc::hex(digest, digest_size);
}
/* Beware here we do not check for errors.
*/
if ((gnutls_x509_crt_get_expiration_time(raw_cert) < ServerInstance->Time()) || (gnutls_x509_crt_get_activation_time(raw_cert) > ServerInstance->Time()))
{
certinfo->error = "Not activated, or expired certificate";
}
}
}
gnutls_x509_crt_deinit(raw_cert);
}
int OnRead(StreamSocket* user, std::string& recvq)
{
if (!sess)
{
user->SetError("No SSL session");
return -1;
}
// gnutls seems to need a bit of prodding to read everything on the socket
ServerInstance->SE->ChangeEventMask(user, FD_ADD_TRIAL_READ | FD_ADD_TRIAL_WRITE);
if (status == ISSL_HANDSHAKING)
{
// The handshake isn't finished, try to finish it.
if(!Handshake(user))
{
if (status != ISSL_CLOSING)
return 0;
return -1;
}
}
// If we resumed the handshake then status will be ISSL_HANDSHAKEN.
if (status == ISSL_HANDSHAKEN)
{
char* buffer = ServerInstance->GetReadBuffer();
size_t bufsiz = ServerInstance->Config->NetBufferSize;
int ret = gnutls_record_recv(sess, buffer, bufsiz);
if (ret > 0)
{
recvq.append(buffer, ret);
return 1;
}
else if (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED)
{
return 0;
}
else if (ret == 0)
{
user->SetError("SSL Connection closed");
OnClose(user);
return -1;
}
else
{
user->SetError(gnutls_strerror(ret));
OnClose(user);
return -1;
}
}
else if (status == ISSL_CLOSING)
return -1;
return 0;
}
int OnWrite(StreamSocket* user, std::string& sendq)
{
if (!sess)
{
user->SetError("No SSL session");
return -1;
}
// gnutls seems to need a bit of prodding to read everything on the socket
ServerInstance->SE->ChangeEventMask(user, FD_ADD_TRIAL_READ | FD_ADD_TRIAL_WRITE);
if (status == ISSL_HANDSHAKING)
{
// The handshake isn't finished, try to finish it.
Handshake(user);
if (status != ISSL_CLOSING)
return 0;
return -1;
}
int ret = 0;
if (status == ISSL_HANDSHAKEN)
{
ret = gnutls_record_send(sess, sendq.data(), sendq.length());
if (ret == (int)sendq.length())
{
ServerInstance->SE->ChangeEventMask(user, FD_WANT_NO_WRITE);
return 1;
}
else if (ret > 0)
{
sendq = sendq.substr(ret);
ServerInstance->SE->ChangeEventMask(user, FD_WANT_SINGLE_WRITE);
return 0;
}
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)
{
user->SetError(gnutls_strerror(ret));
OnClose(user);
return -1;
}
}
return 0;
}
bool Handshake(StreamSocket* user)
{
int ret = gnutls_handshake(sess);
if (ret < 0)
{
if(ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED)
{
// Handshake needs resuming later, read() or write() would have blocked.
if(gnutls_record_get_direction(sess) == 0)
{
// gnutls_handshake() wants to read() again.
ServerInstance->SE->ChangeEventMask(user, FD_WANT_POLL_READ | FD_WANT_NO_WRITE);
}
else
{
// gnutls_handshake() wants to write() again.
ServerInstance->SE->ChangeEventMask(user, FD_WANT_NO_READ | FD_WANT_SINGLE_WRITE);
}
}
else
{
user->SetError(std::string("Handshake Failed - ") + gnutls_strerror(ret));
status = ISSL_CLOSING;
OnClose(user);
}
return false;
}
else
{
// Change the seesion state
status = ISSL_HANDSHAKEN;
VerifyCertificate(user);
// Finish writing, if any left
ServerInstance->SE->ChangeEventMask(user, FD_WANT_POLL_READ | FD_WANT_NO_WRITE | FD_ADD_TRIAL_WRITE);
return true;
}
}
ssl_cert* GetCertificate()
{
return cert;
}
};
class GnuTLSProvider : public IOHookProvider
{
public:
reference<x509_cred> def_creds;
std::map<std::string, reference<x509_cred> > creds;
GnuTLSProvider(Module* Creator) : IOHookProvider(Creator, "ssl/gnutls") {}
void OnClientConnection(StreamSocket* user, ConfigTag* tag)
{
std::string cred = tag->getString("ssl_cert");
std::map<std::string, reference<x509_cred> >::iterator i = creds.find(cred);
new GnuTLSHook(creator, true, user, i == creds.end() ? def_creds : i->second);
}
void OnServerConnection(StreamSocket* user, ListenSocket* from)
{
std::string cred = from ? from->bind_tag->getString("ssl_cert") : "starttls";
std::map<std::string, reference<x509_cred> >::iterator i = creds.find(cred);
new GnuTLSHook(creator, false, user, i == creds.end() ? def_creds : i->second);
}
};
/** Client cert getter */
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) {
StreamSocket* socket = reinterpret_cast<StreamSocket*>(gnutls_transport_get_ptr(session));
GnuTLSHook* hook = static_cast<GnuTLSHook*>(socket->GetIOHook());
st->type = GNUTLS_CRT_X509;
st->cert.x509 = hook->creds->certs->data();
st->key.x509 = hook->creds->key->x509;
st->ncerts = hook->creds->certs->count();
st->deinit_all = 0;
return 0;
}
class CommandStartTLS : public SplitCommand
{
public:
bool enabled;
GnuTLSProvider& prov;
CommandStartTLS (Module* mod, GnuTLSProvider& Prov) : SplitCommand(mod, "STARTTLS"), prov(Prov)
{
enabled = true;
works_before_reg = true;
}
CmdResult HandleLocal(const std::vector<std::string> ¶meters, LocalUser *user)
{
if (!enabled)
{
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->eh->GetIOHook())
{
user->WriteNumeric(670, "%s :STARTTLS successful, go ahead with TLS handshake", user->nick.c_str());
/* 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();
prov.OnServerConnection(user->eh, NULL);
}
else
user->WriteNumeric(691, "%s :STARTTLS failure", user->nick.c_str());
}
return CMD_FAILURE;
}
};
class ModuleSSLGnuTLS : public Module
{
RandGen randhandler;
GenericCap capHandler;
GnuTLSProvider iohook;
CommandStartTLS starttls;
std::string sslports;
reference<DH_info> dh;
public:
ModuleSSLGnuTLS()
: capHandler(this, "tls"), iohook(this), starttls(this, iohook)
{
gnutls_global_init(); // This must be called once in the program
}
void init()
{
OnModuleRehash(NULL,"ssl");
ServerInstance->GenRandom = &randhandler;
Implementation eventlist[] = { I_On005Numeric, I_OnModuleRehash, I_OnUserConnect, I_OnEvent };
ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
ServerInstance->Modules->AddService(iohook);
ServerInstance->AddCommand(&starttls);
}
void ReadConfig(ConfigReadStatus&)
{
sslports.clear();
ConfigTag* Conf = ServerInstance->Config->GetTag("gnutls");
starttls.enabled = Conf->getBool("starttls", true);
if (Conf->getBool("showports", true))
{
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());
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);
}
}
void OnModuleRehash(User* user, const std::string ¶m)
{
if(param != "ssl")
return;
ConfigTag* Conf = ServerInstance->Config->GetTag("gnutls");
std::string hashname = Conf->getString("hash", "md5");
dh = new DH_info();
if (hashname == "md5")
hash = GNUTLS_DIG_MD5;
else if (hashname == "sha1")
hash = GNUTLS_DIG_SHA1;
else
throw ModuleException("Unknown hash type " + hashname);
FileReader reader;
reference<x509_crt_list> ca_list;
reference<x509_crl_list> crl_list;
reader.LoadFile(Conf->getString("cafile", "conf/ca.pem"));
if (reader.FileSize())
ca_list = new x509_crt_list(reader.Contents());
reader.LoadFile(Conf->getString("crlfile", "conf/crl.pem"));
if (reader.FileSize())
crl_list = new x509_crl_list(reader.Contents());
iohook.def_creds = new x509_cred(Conf, ca_list, crl_list, dh);
iohook.creds.clear();
ConfigTagList tags = ServerInstance->Config->GetTags("ssl_cert");
while (tags.first != tags.second)
{
ConfigTag* tag = tags.first->second;
std::string name = tag->getString("name");
if (name.empty())
throw ModuleException("Invalid <ssl_cert> without name at " + tag->getTagLocation());
iohook.creds[name] = new x509_cred(tag, ca_list, crl_list, dh);
tags.first++;
}
}
~ModuleSSLGnuTLS()
{
iohook.creds.clear();
iohook.def_creds = NULL;
gnutls_global_deinit();
ServerInstance->GenRandom = &ServerInstance->HandleGenRandom;
}
void OnCleanup(int target_type, void* item)
{
if(target_type == TYPE_USER)
{
LocalUser* user = IS_LOCAL(static_cast<User*>(item));
if (user && user->eh->GetIOHook() && user->eh->GetIOHook()->creator == 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");
}
}
}
Version GetVersion()
{
return Version("Provides SSL support for clients", VF_VENDOR);
}
void On005Numeric(std::string &output)
{
if (!sslports.empty())
output.append(" SSL=" + sslports);
if (starttls.enabled)
output.append(" STARTTLS");
}
void OnUserConnect(LocalUser* user)
{
GnuTLSHook* hook = static_cast<GnuTLSHook*>(user->eh->GetIOHook());
if (hook && hook->creator == this)
{
ssl_cert* cert = hook->cert;
std::string cipher = gnutls_kx_get_name(gnutls_kx_get(hook->sess));
cipher.append("-").append(gnutls_cipher_get_name(gnutls_cipher_get(hook->sess))).append("-");
cipher.append(gnutls_mac_get_name(gnutls_mac_get(hook->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());
}
}
void OnEvent(Event& ev)
{
if (starttls.enabled)
capHandler.HandleEvent(ev);
}
};
}
using GnuTLS::ModuleSSLGnuTLS;
MODULE_INIT(ModuleSSLGnuTLS)
