#include "inspircd.h"
-#include <gcrypt.h>
#include <gnutls/gnutls.h>
#include <gnutls/x509.h>
#include "ssl.h"
#include "m_cap.h"
#ifdef _WIN32
-# pragma comment(lib, "libgnutls.lib")
-# pragma comment(lib, "libgcrypt.lib")
-# pragma comment(lib, "libgpg-error.lib")
-# pragma comment(lib, "user32.lib")
-# pragma comment(lib, "advapi32.lib")
-# pragma comment(lib, "libgcc.lib")
-# pragma comment(lib, "libmingwex.lib")
-# pragma comment(lib, "gdi32.lib")
+# pragma comment(lib, "libgnutls-30.lib")
#endif
/* $ModDesc: Provides SSL support for clients */
-/* $CompileFlags: pkgconfincludes("gnutls","/gnutls/gnutls.h","") exec("libgcrypt-config --cflags") */
-/* $LinkerFlags: rpath("pkg-config --libs gnutls") pkgconflibs("gnutls","/libgnutls.so","-lgnutls") exec("libgcrypt-config --libs") */
+/* $CompileFlags: pkgconfincludes("gnutls","/gnutls/gnutls.h","") iflt("pkg-config --modversion gnutls","2.12") exec("libgcrypt-config --cflags") */
+/* $LinkerFlags: rpath("pkg-config --libs gnutls") pkgconflibs("gnutls","/libgnutls.so","-lgnutls") iflt("pkg-config --modversion gnutls","2.12") exec("libgcrypt-config --libs") */
/* $NoPedantic */
#ifndef GNUTLS_VERSION_MAJOR
typedef gnutls_dh_params_t gnutls_dh_params;
#endif
+#if (GNUTLS_VERSION_MAJOR > 2 || (GNUTLS_VERSION_MAJOR == 2 && GNUTLS_VERSION_MINOR >= 12))
+# define GNUTLS_HAS_RND
+# include <gnutls/crypto.h>
+#else
+# include <gcrypt.h>
+#endif
+
enum issl_status { ISSL_NONE, ISSL_HANDSHAKING_READ, ISSL_HANDSHAKING_WRITE, ISSL_HANDSHAKEN, ISSL_CLOSING, ISSL_CLOSED };
-static std::vector<gnutls_x509_crt_t> x509_certs;
-static gnutls_x509_privkey_t x509_key;
+struct SSLConfig : public refcountbase
+{
+ gnutls_certificate_credentials_t x509_cred;
+ std::vector<gnutls_x509_crt_t> x509_certs;
+ gnutls_x509_privkey_t x509_key;
+ gnutls_dh_params_t dh_params;
+#ifdef GNUTLS_NEW_PRIO_API
+ gnutls_priority_t priority;
+#endif
+
+ SSLConfig()
+ : x509_cred(NULL)
+ , x509_key(NULL)
+ , dh_params(NULL)
+#ifdef GNUTLS_NEW_PRIO_API
+ , priority(NULL)
+#endif
+ {
+ }
+
+ ~SSLConfig()
+ {
+ ServerInstance->Logs->Log("m_ssl_gnutls", DEBUG, "Destroying SSLConfig %p", (void*)this);
+
+ if (x509_cred)
+ gnutls_certificate_free_credentials(x509_cred);
+
+ for (unsigned int i = 0; i < x509_certs.size(); i++)
+ gnutls_x509_crt_deinit(x509_certs[i]);
+
+ if (x509_key)
+ gnutls_x509_privkey_deinit(x509_key);
+
+ if (dh_params)
+ gnutls_dh_params_deinit(dh_params);
+
+#ifdef GNUTLS_NEW_PRIO_API
+ if (priority)
+ gnutls_priority_deinit(priority);
+#endif
+ }
+};
+
+static reference<SSLConfig> currconf;
+
+static SSLConfig* GetSessionConfig(gnutls_session_t session);
+
#if(GNUTLS_VERSION_MAJOR < 2 || ( GNUTLS_VERSION_MAJOR == 2 && GNUTLS_VERSION_MINOR < 12 ) )
static int cert_callback (gnutls_session_t session, const gnutls_datum_t * req_ca_rdn, int nreqs,
const gnutls_pk_algorithm_t * sign_algos, int sign_algos_length, gnutls_retr_st * st) {
st->cert_type = GNUTLS_CRT_X509;
st->key_type = GNUTLS_PRIVKEY_X509;
#endif
+ SSLConfig* conf = GetSessionConfig(session);
+ std::vector<gnutls_x509_crt_t>& x509_certs = conf->x509_certs;
st->ncerts = x509_certs.size();
st->cert.x509 = &x509_certs[0];
- st->key.x509 = x509_key;
+ st->key.x509 = conf->x509_key;
st->deinit_all = 0;
return 0;
RandGen() {}
void Call(char* buffer, size_t len)
{
+#ifdef GNUTLS_HAS_RND
+ gnutls_rnd(GNUTLS_RND_RANDOM, buffer, len);
+#else
gcry_randomize(buffer, len, GCRY_STRONG_RANDOM);
+#endif
}
};
gnutls_session_t sess;
issl_status status;
reference<ssl_cert> cert;
+ reference<SSLConfig> config;
- issl_session() : socket(NULL), sess(NULL) {}
+ issl_session() : socket(NULL), sess(NULL), status(ISSL_NONE) {}
};
+static SSLConfig* GetSessionConfig(gnutls_session_t sess)
+{
+ issl_session* session = reinterpret_cast<issl_session*>(gnutls_transport_get_ptr(sess));
+ return session->config;
+}
+
class CommandStartTLS : public SplitCommand
{
public:
{
issl_session* sessions;
- gnutls_certificate_credentials_t x509_cred;
- gnutls_dh_params_t dh_params;
gnutls_digest_algorithm_t hash;
- #ifdef GNUTLS_NEW_PRIO_API
- gnutls_priority_t priority;
- #endif
std::string sslports;
int dh_bits;
- bool cred_alloc;
- bool dh_alloc;
-
RandGen randhandler;
CommandStartTLS starttls;
ModuleSSLGnuTLS()
: starttls(this), capHandler(this, "tls"), iohook(this, "ssl/gnutls", SERVICE_IOHOOK)
{
+#ifndef GNUTLS_HAS_RND
gcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0);
+#endif
sessions = new issl_session[ServerInstance->SE->GetMaxFds()];
gnutls_global_init(); // This must be called once in the program
- gnutls_x509_privkey_init(&x509_key);
-
- #ifdef GNUTLS_NEW_PRIO_API
- // Init this here so it's always initialized, avoids an extra boolean
- gnutls_priority_init(&priority, "NORMAL", NULL);
- #endif
-
- cred_alloc = false;
- dh_alloc = false;
}
void init()
{
- // Needs the flag as it ignores a plain /rehash
- OnModuleRehash(NULL,"ssl");
+ currconf = new SSLConfig;
+ InitSSLConfig(currconf);
ServerInstance->GenRandom = &randhandler;
- // Void return, guess we assume success
- gnutls_certificate_set_dh_params(x509_cred, dh_params);
Implementation eventlist[] = { I_On005Numeric, I_OnRehash, I_OnModuleRehash, I_OnUserConnect,
- I_OnEvent, I_OnHookIO };
+ I_OnEvent, I_OnHookIO, I_OnCheckReady };
ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
ServerInstance->Modules->AddService(iohook);
if(param != "ssl")
return;
+ reference<SSLConfig> newconf = new SSLConfig;
+ try
+ {
+ InitSSLConfig(newconf);
+ }
+ catch (ModuleException& ex)
+ {
+ ServerInstance->Logs->Log("m_ssl_gnutls", DEFAULT, "m_ssl_gnutls: Not applying new config. %s", ex.GetReason());
+ return;
+ }
+
+ ServerInstance->Logs->Log("m_ssl_gnutls", DEFAULT, "m_ssl_gnutls: Applying new config, old config is in use by %d connection(s)", currconf->GetReferenceCount()-1);
+ currconf = newconf;
+ }
+
+ void InitSSLConfig(SSLConfig* config)
+ {
+ ServerInstance->Logs->Log("m_ssl_gnutls", DEBUG, "Initializing new SSLConfig %p", (void*)config);
+
std::string keyfile;
std::string certfile;
std::string cafile;
std::string crlfile;
- OnRehash(user);
+ OnRehash(NULL);
ConfigTag* Conf = ServerInstance->Config->ConfValue("gnutls");
hash = GNUTLS_DIG_MD5;
else if (hashname == "sha1")
hash = GNUTLS_DIG_SHA1;
+#ifdef INSPIRCD_GNUTLS_ENABLE_SHA256_FINGERPRINT
+ else if (hashname == "sha256")
+ hash = GNUTLS_DIG_SHA256;
+#endif
else
throw ModuleException("Unknown hash type " + hashname);
int ret;
- if (dh_alloc)
- {
- gnutls_dh_params_deinit(dh_params);
- dh_alloc = false;
- dh_params = NULL;
- }
+ gnutls_certificate_credentials_t& x509_cred = config->x509_cred;
- if (cred_alloc)
+ ret = gnutls_certificate_allocate_credentials(&x509_cred);
+ if (ret < 0)
{
- // Deallocate the old credentials
- 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();
+ // Set to NULL because we can't be sure what value is in it and we must not try to
+ // deallocate it in case of an error
+ x509_cred = NULL;
+ throw ModuleException("Failed to allocate certificate credentials: " + std::string(gnutls_strerror(ret)));
}
- ret = gnutls_certificate_allocate_credentials(&x509_cred);
- cred_alloc = (ret >= 0);
- if (!cred_alloc)
- ServerInstance->Logs->Log("m_ssl_gnutls",DEBUG, "m_ssl_gnutls.so: Failed to allocate certificate credentials: %s", gnutls_strerror(ret));
-
if((ret =gnutls_certificate_set_x509_trust_file(x509_cred, cafile.c_str(), GNUTLS_X509_FMT_PEM)) < 0)
ServerInstance->Logs->Log("m_ssl_gnutls",DEBUG, "m_ssl_gnutls.so: Failed to set X.509 trust file '%s': %s", cafile.c_str(), gnutls_strerror(ret));
std::string key_string = reader.Contents();
gnutls_datum_t key_datum = { (unsigned char*)key_string.data(), static_cast<unsigned int>(key_string.length()) };
+ std::vector<gnutls_x509_crt_t>& x509_certs = config->x509_certs;
+
// If this fails, no SSL port will work. At all. So, do the smart thing - throw a ModuleException
unsigned int certcount = 3;
x509_certs.resize(certcount);
}
x509_certs.resize(ret);
+ gnutls_x509_privkey_t& x509_key = config->x509_key;
+ if (gnutls_x509_privkey_init(&x509_key) < 0)
+ {
+ // Make sure the destructor does not try to deallocate this, see above
+ x509_key = NULL;
+ throw ModuleException("Unable to initialize private key");
+ }
+
if((ret = gnutls_x509_privkey_import(x509_key, &key_datum, GNUTLS_X509_FMT_PEM)) < 0)
throw ModuleException("Unable to load GnuTLS server private key (" + keyfile + "): " + std::string(gnutls_strerror(ret)));
throw ModuleException("Unable to set GnuTLS cert/key pair: " + std::string(gnutls_strerror(ret)));
#ifdef GNUTLS_NEW_PRIO_API
- // It's safe to call this every time as we cannot have this uninitialized, see constructor and below.
- gnutls_priority_deinit(priority);
-
// Try to set the priorities for ciphers, kex methods etc. to the user supplied string
// If the user did not supply anything then the string is already set to "NORMAL"
const char* priocstr = priorities.c_str();
const char* prioerror;
+ gnutls_priority_t& priority = config->priority;
if ((ret = gnutls_priority_init(&priority, priocstr, &prioerror)) < 0)
{
// gnutls did not understand the user supplied string, log and fall back to the default priorities
#else
gnutls_certificate_set_retrieve_function (x509_cred, cert_callback);
#endif
+
+ gnutls_dh_params_t& dh_params = config->dh_params;
ret = gnutls_dh_params_init(&dh_params);
- dh_alloc = (ret >= 0);
- if (!dh_alloc)
+ if (ret < 0)
{
+ // Make sure the destructor does not try to deallocate this, see above
+ dh_params = NULL;
ServerInstance->Logs->Log("m_ssl_gnutls",DEFAULT, "m_ssl_gnutls.so: Failed to initialise DH parameters: %s", gnutls_strerror(ret));
return;
}
{
// File unreadable or GnuTLS was unhappy with the contents, generate the DH primes now
ServerInstance->Logs->Log("m_ssl_gnutls", DEFAULT, "m_ssl_gnutls.so: Generating DH parameters because I failed to load them from file '%s': %s", dhfile.c_str(), gnutls_strerror(ret));
- GenerateDHParams();
+ GenerateDHParams(dh_params);
}
}
else
{
- GenerateDHParams();
+ GenerateDHParams(dh_params);
}
+
+ gnutls_certificate_set_dh_params(x509_cred, dh_params);
}
- void GenerateDHParams()
+ void GenerateDHParams(gnutls_dh_params_t dh_params)
{
// Generate Diffie Hellman parameters - for use with DHE
// kx algorithms. These should be discarded and regenerated
// once a day, once a week or once a month. Depending on the
// security requirements.
- if (!dh_alloc)
- return;
-
int ret;
if((ret = gnutls_dh_params_generate2(dh_params, dh_bits)) < 0)
~ModuleSSLGnuTLS()
{
- for(unsigned int i=0; i < x509_certs.size(); i++)
- gnutls_x509_crt_deinit(x509_certs[i]);
-
- gnutls_x509_privkey_deinit(x509_key);
- #ifdef GNUTLS_NEW_PRIO_API
- gnutls_priority_deinit(priority);
- #endif
-
- if (dh_alloc)
- gnutls_dh_params_deinit(dh_params);
- if (cred_alloc)
- gnutls_certificate_free_credentials(x509_cred);
+ currconf = NULL;
gnutls_global_deinit();
delete[] sessions;
req.cert = session->cert;
}
+ else if (!strcmp("GET_RAW_SSL_SESSION", request.id))
+ {
+ SSLRawSessionRequest& req = static_cast<SSLRawSessionRequest&>(request);
+ if ((req.fd >= 0) && (req.fd < ServerInstance->SE->GetMaxFds()))
+ req.data = reinterpret_cast<void*>(sessions[req.fd].sess);
+ }
}
void InitSession(StreamSocket* user, bool me_server)
gnutls_init(&session->sess, me_server ? GNUTLS_SERVER : GNUTLS_CLIENT);
session->socket = user;
+ session->config = currconf;
#ifdef GNUTLS_NEW_PRIO_API
- gnutls_priority_set(session->sess, priority);
+ gnutls_priority_set(session->sess, currconf->priority);
#else
gnutls_set_default_priority(session->sess);
#endif
- gnutls_credentials_set(session->sess, GNUTLS_CRD_CERTIFICATE, x509_cred);
+ gnutls_credentials_set(session->sess, GNUTLS_CRD_CERTIFICATE, currconf->x509_cred);
gnutls_dh_set_prime_bits(session->sess, dh_bits);
gnutls_transport_set_ptr(session->sess, reinterpret_cast<gnutls_transport_ptr_t>(session));
gnutls_transport_set_push_function(session->sess, gnutls_push_wrapper);
session->sess = NULL;
session->cert = NULL;
session->status = ISSL_NONE;
+ session->config = NULL;
}
void VerifyCertificate(issl_session* session, StreamSocket* user)
goto info_done_dealloc;
}
- gnutls_x509_crt_get_dn(cert, name, &name_size);
- certinfo->dn = name;
+ if (gnutls_x509_crt_get_dn(cert, name, &name_size) == 0)
+ {
+ std::string& dn = certinfo->dn;
+ dn = name;
+ // Make sure there are no chars in the string that we consider invalid
+ if (dn.find_first_of("\r\n") != std::string::npos)
+ dn.clear();
+ }
- gnutls_x509_crt_get_issuer_dn(cert, name, &name_size);
- certinfo->issuer = name;
+ name_size = sizeof(name);
+ if (gnutls_x509_crt_get_issuer_dn(cert, name, &name_size) == 0)
+ {
+ std::string& issuer = certinfo->issuer;
+ issuer = name;
+ if (issuer.find_first_of("\r\n") != std::string::npos)
+ issuer.clear();
+ }
if ((ret = gnutls_x509_crt_get_fingerprint(cert, hash, digest, &digest_size)) < 0)
{
if (starttls.enabled)
capHandler.HandleEvent(ev);
}
+
+ ModResult OnCheckReady(LocalUser* user)
+ {
+ if ((user->eh.GetIOHook() == this) && (sessions[user->eh.GetFd()].status != ISSL_HANDSHAKEN))
+ return MOD_RES_DENY;
+ return MOD_RES_PASSTHRU;
+ }
};
MODULE_INIT(ModuleSSLGnuTLS)
projects / user / henk / code / inspircd.git / blobdiff