#include "inspircd.h"
-#include <gnutls/gnutls.h>
-#include <gnutls/x509.h>
-#include "ssl.h"
-#include "m_cap.h"
-
-#ifdef _WIN32
-# pragma comment(lib, "libgnutls-28.lib")
+#include "modules/ssl.h"
+#include <memory>
+
+// Fix warnings about the use of commas at end of enumerator lists on C++03.
+#if defined __clang__
+# pragma clang diagnostic ignored "-Wc++11-extensions"
+#elif defined __GNUC__
+# pragma GCC diagnostic ignored "-pedantic"
#endif
-/* $ModDesc: Provides SSL support for clients */
-/* $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 */
+#include <gnutls/gnutls.h>
+#include <gnutls/x509.h>
-#ifndef GNUTLS_VERSION_MAJOR
-#define GNUTLS_VERSION_MAJOR LIBGNUTLS_VERSION_MAJOR
-#define GNUTLS_VERSION_MINOR LIBGNUTLS_VERSION_MINOR
-#define GNUTLS_VERSION_PATCH LIBGNUTLS_VERSION_PATCH
+#ifndef GNUTLS_VERSION_NUMBER
+#define GNUTLS_VERSION_NUMBER LIBGNUTLS_VERSION_NUMBER
#endif
-// These don't exist in older GnuTLS versions
-#if ((GNUTLS_VERSION_MAJOR > 2) || (GNUTLS_VERSION_MAJOR == 2 && GNUTLS_VERSION_MINOR > 1) || (GNUTLS_VERSION_MAJOR == 2 && GNUTLS_VERSION_MINOR == 1 && GNUTLS_VERSION_PATCH >= 7))
-#define GNUTLS_NEW_PRIO_API
-#endif
+// Check if the GnuTLS library is at least version major.minor.patch
+#define INSPIRCD_GNUTLS_HAS_VERSION(major, minor, patch) (GNUTLS_VERSION_NUMBER >= ((major << 16) | (minor << 8) | patch))
-#if(GNUTLS_VERSION_MAJOR < 2)
-typedef gnutls_certificate_credentials_t gnutls_certificate_credentials;
-typedef gnutls_dh_params_t gnutls_dh_params;
+#if INSPIRCD_GNUTLS_HAS_VERSION(2, 9, 8)
+#define GNUTLS_HAS_MAC_GET_ID
+#include <gnutls/crypto.h>
#endif
-#if (GNUTLS_VERSION_MAJOR > 2 || (GNUTLS_VERSION_MAJOR == 2 && GNUTLS_VERSION_MINOR >= 12))
+#if INSPIRCD_GNUTLS_HAS_VERSION(2, 12, 0)
# 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 };
-
-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)
+#ifdef _WIN32
+# pragma comment(lib, "libgnutls-28.lib")
#endif
- {
- }
-
- ~SSLConfig()
- {
- ServerInstance->Logs->Log("m_ssl_gnutls", DEBUG, "Destroying SSLConfig %p", (void*)this);
- if (x509_cred)
- gnutls_certificate_free_credentials(x509_cred);
+/* $CompileFlags: pkgconfincludes("gnutls","/gnutls/gnutls.h","") eval("print `libgcrypt-config --cflags | tr -d \r` if `pkg-config --modversion gnutls 2>/dev/null | tr -d \r` lt '2.12'") */
+/* $LinkerFlags: rpath("pkg-config --libs gnutls") pkgconflibs("gnutls","/libgnutls.so","-lgnutls") eval("print `libgcrypt-config --libs | tr -d \r` if `pkg-config --modversion gnutls 2>/dev/null | tr -d \r` lt '2.12'") */
- 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);
+// These don't exist in older GnuTLS versions
+#if INSPIRCD_GNUTLS_HAS_VERSION(2, 1, 7)
+#define GNUTLS_NEW_PRIO_API
+#endif
-#ifdef GNUTLS_NEW_PRIO_API
- if (priority)
- gnutls_priority_deinit(priority);
+#if (!INSPIRCD_GNUTLS_HAS_VERSION(2, 0, 0))
+typedef gnutls_certificate_credentials_t gnutls_certificate_credentials;
+typedef gnutls_dh_params_t gnutls_dh_params;
#endif
- }
-};
-static reference<SSLConfig> currconf;
+enum issl_status { ISSL_NONE, ISSL_HANDSHAKING, ISSL_HANDSHAKEN };
-static SSLConfig* GetSessionConfig(gnutls_session_t session);
+#if INSPIRCD_GNUTLS_HAS_VERSION(2, 12, 0)
+#define INSPIRCD_GNUTLS_HAS_VECTOR_PUSH
+#define GNUTLS_NEW_CERT_CALLBACK_API
+typedef gnutls_retr2_st cert_cb_last_param_type;
+#else
+typedef gnutls_retr_st cert_cb_last_param_type;
+#endif
-#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) {
+#if INSPIRCD_GNUTLS_HAS_VERSION(3, 3, 5)
+#define INSPIRCD_GNUTLS_HAS_RECV_PACKET
+#endif
- st->type = GNUTLS_CRT_X509;
+#if INSPIRCD_GNUTLS_HAS_VERSION(2, 99, 0)
+// The second parameter of gnutls_init() has changed in 2.99.0 from gnutls_connection_end_t to unsigned int
+// (it became a general flags parameter) and the enum has been deprecated and generates a warning on use.
+typedef unsigned int inspircd_gnutls_session_init_flags_t;
#else
-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_retr2_st * st) {
- st->cert_type = GNUTLS_CRT_X509;
- st->key_type = GNUTLS_PRIVKEY_X509;
+typedef gnutls_connection_end_t inspircd_gnutls_session_init_flags_t;
#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 = conf->x509_key;
- st->deinit_all = 0;
-
- return 0;
-}
class RandGen : public HandlerBase2<void, char*, size_t>
{
public:
- RandGen() {}
void Call(char* buffer, size_t len)
{
#ifdef GNUTLS_HAS_RND
}
};
-/** Represents an SSL user's extra data
- */
-class issl_session
-{
-public:
- StreamSocket* socket;
- gnutls_session_t sess;
- issl_status status;
- reference<ssl_cert> cert;
- reference<SSLConfig> config;
-
- 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
+namespace GnuTLS
{
- public:
- bool enabled;
- CommandStartTLS (Module* mod) : SplitCommand(mod, "STARTTLS")
+ class Init
{
- enabled = true;
- works_before_reg = true;
- }
+ public:
+ Init() { gnutls_global_init(); }
+ ~Init() { gnutls_global_deinit(); }
+ };
- CmdResult HandleLocal(const std::vector<std::string> ¶meters, LocalUser *user)
+ class Exception : public ModuleException
{
- if (!enabled)
- {
- user->WriteNumeric(691, "%s :STARTTLS is not enabled", user->nick.c_str());
- return CMD_FAILURE;
- }
+ public:
+ Exception(const std::string& reason)
+ : ModuleException(reason) { }
+ };
- if (user->registered == REG_ALL)
- {
- user->WriteNumeric(691, "%s :STARTTLS is not permitted after client registration is complete", user->nick.c_str());
- }
- else
+ void ThrowOnError(int errcode, const char* msg)
+ {
+ if (errcode < 0)
{
- 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();
- user->eh.AddIOHook(creator);
- creator->OnStreamSocketAccept(&user->eh, NULL, NULL);
- }
- else
- user->WriteNumeric(691, "%s :STARTTLS failure", user->nick.c_str());
+ std::string reason = msg;
+ reason.append(" :").append(gnutls_strerror(errcode));
+ throw Exception(reason);
}
-
- return CMD_FAILURE;
}
-};
-
-class ModuleSSLGnuTLS : public Module
-{
- issl_session* sessions;
- gnutls_digest_algorithm_t hash;
-
- std::string sslports;
- int dh_bits;
+ /** Used to create a gnutls_datum_t* from a std::string
+ */
+ class Datum
+ {
+ gnutls_datum_t datum;
- RandGen randhandler;
- CommandStartTLS starttls;
+ public:
+ Datum(const std::string& dat)
+ {
+ datum.data = (unsigned char*)dat.data();
+ datum.size = static_cast<unsigned int>(dat.length());
+ }
- GenericCap capHandler;
- ServiceProvider iohook;
+ const gnutls_datum_t* get() const { return &datum; }
+ };
- inline static const char* UnknownIfNULL(const char* str)
+ class Hash
{
- return str ? str : "UNKNOWN";
- }
+ gnutls_digest_algorithm_t hash;
- static ssize_t gnutls_pull_wrapper(gnutls_transport_ptr_t session_wrap, void* buffer, size_t size)
- {
- issl_session* session = reinterpret_cast<issl_session*>(session_wrap);
- if (session->socket->GetEventMask() & FD_READ_WILL_BLOCK)
+ public:
+ // Nothing to deallocate, constructor may throw freely
+ Hash(const std::string& hashname)
{
-#ifdef _WIN32
- gnutls_transport_set_errno(session->sess, EAGAIN);
+ // As older versions of gnutls can't do this, let's disable it where needed.
+#ifdef GNUTLS_HAS_MAC_GET_ID
+ // As gnutls_digest_algorithm_t and gnutls_mac_algorithm_t are mapped 1:1, we can do this
+ // There is no gnutls_dig_get_id() at the moment, but it may come later
+ hash = (gnutls_digest_algorithm_t)gnutls_mac_get_id(hashname.c_str());
+ if (hash == GNUTLS_DIG_UNKNOWN)
+ throw Exception("Unknown hash type " + hashname);
+
+ // Check if the user is giving us something that is a valid MAC but not digest
+ gnutls_hash_hd_t is_digest;
+ if (gnutls_hash_init(&is_digest, hash) < 0)
+ throw Exception("Unknown hash type " + hashname);
+ gnutls_hash_deinit(is_digest, NULL);
#else
- errno = EAGAIN;
+ if (hashname == "md5")
+ 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 Exception("Unknown hash type " + hashname);
#endif
- return -1;
}
- int rv = ServerInstance->SE->Recv(session->socket, reinterpret_cast<char *>(buffer), size, 0);
+ gnutls_digest_algorithm_t get() const { return hash; }
+ };
-#ifdef _WIN32
- if (rv < 0)
+ class DHParams
+ {
+ gnutls_dh_params_t dh_params;
+
+ DHParams()
{
- /* Windows doesn't use errno, but gnutls does, so check SocketEngine::IgnoreError()
- * and then set errno appropriately.
- * The gnutls library may also have a different errno variable than us, see
- * gnutls_transport_set_errno(3).
- */
- gnutls_transport_set_errno(session->sess, SocketEngine::IgnoreError() ? EAGAIN : errno);
+ ThrowOnError(gnutls_dh_params_init(&dh_params), "gnutls_dh_params_init() failed");
}
-#endif
-
- if (rv < (int)size)
- ServerInstance->SE->ChangeEventMask(session->socket, FD_READ_WILL_BLOCK);
- return rv;
- }
- static ssize_t gnutls_push_wrapper(gnutls_transport_ptr_t session_wrap, const void* buffer, size_t size)
- {
- issl_session* session = reinterpret_cast<issl_session*>(session_wrap);
- if (session->socket->GetEventMask() & FD_WRITE_WILL_BLOCK)
+ public:
+ /** Import */
+ static std::auto_ptr<DHParams> Import(const std::string& dhstr)
{
-#ifdef _WIN32
- gnutls_transport_set_errno(session->sess, EAGAIN);
-#else
- errno = EAGAIN;
-#endif
- return -1;
+ std::auto_ptr<DHParams> dh(new DHParams);
+ int ret = gnutls_dh_params_import_pkcs3(dh->dh_params, Datum(dhstr).get(), GNUTLS_X509_FMT_PEM);
+ ThrowOnError(ret, "Unable to import DH params");
+ return dh;
}
- int rv = ServerInstance->SE->Send(session->socket, reinterpret_cast<const char *>(buffer), size, 0);
-
-#ifdef _WIN32
- if (rv < 0)
+ /** Generate */
+ static std::auto_ptr<DHParams> Generate(unsigned int bits)
{
- /* Windows doesn't use errno, but gnutls does, so check SocketEngine::IgnoreError()
- * and then set errno appropriately.
- * The gnutls library may also have a different errno variable than us, see
- * gnutls_transport_set_errno(3).
- */
- gnutls_transport_set_errno(session->sess, SocketEngine::IgnoreError() ? EAGAIN : errno);
+ std::auto_ptr<DHParams> dh(new DHParams);
+ ThrowOnError(gnutls_dh_params_generate2(dh->dh_params, bits), "Unable to generate DH params");
+ return dh;
}
-#endif
- if (rv < (int)size)
- ServerInstance->SE->ChangeEventMask(session->socket, FD_WRITE_WILL_BLOCK);
- return rv;
- }
+ ~DHParams()
+ {
+ gnutls_dh_params_deinit(dh_params);
+ }
- public:
+ const gnutls_dh_params_t& get() const { return dh_params; }
+ };
- ModuleSSLGnuTLS()
- : starttls(this), capHandler(this, "tls"), iohook(this, "ssl/gnutls", SERVICE_IOHOOK)
+ class X509Key
{
-#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
- }
+ /** Ensure that the key is deinited in case the constructor of X509Key throws
+ */
+ class RAIIKey
+ {
+ public:
+ gnutls_x509_privkey_t key;
- void init()
- {
- currconf = new SSLConfig;
- InitSSLConfig(currconf);
+ RAIIKey()
+ {
+ ThrowOnError(gnutls_x509_privkey_init(&key), "gnutls_x509_privkey_init() failed");
+ }
- ServerInstance->GenRandom = &randhandler;
+ ~RAIIKey()
+ {
+ gnutls_x509_privkey_deinit(key);
+ }
+ } key;
- Implementation eventlist[] = { I_On005Numeric, I_OnRehash, I_OnModuleRehash, I_OnUserConnect,
- I_OnEvent, I_OnHookIO, I_OnCheckReady };
- ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
+ public:
+ /** Import */
+ X509Key(const std::string& keystr)
+ {
+ int ret = gnutls_x509_privkey_import(key.key, Datum(keystr).get(), GNUTLS_X509_FMT_PEM);
+ ThrowOnError(ret, "Unable to import private key");
+ }
- ServerInstance->Modules->AddService(iohook);
- ServerInstance->Modules->AddService(starttls);
- }
+ gnutls_x509_privkey_t& get() { return key.key; }
+ };
- void OnRehash(User* user)
+ class X509CertList
{
- sslports.clear();
+ std::vector<gnutls_x509_crt_t> certs;
- ConfigTag* Conf = ServerInstance->Config->ConfValue("gnutls");
- starttls.enabled = Conf->getBool("starttls", true);
-
- if (Conf->getBool("showports", true))
+ public:
+ /** Import */
+ X509CertList(const std::string& certstr)
{
- sslports = Conf->getString("advertisedports");
- if (!sslports.empty())
- return;
+ unsigned int certcount = 3;
+ certs.resize(certcount);
+ Datum datum(certstr);
- for (size_t i = 0; i < ServerInstance->ports.size(); i++)
+ int ret = gnutls_x509_crt_list_import(raw(), &certcount, datum.get(), GNUTLS_X509_FMT_PEM, GNUTLS_X509_CRT_LIST_IMPORT_FAIL_IF_EXCEED);
+ if (ret == GNUTLS_E_SHORT_MEMORY_BUFFER)
{
- 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")
- {
- /*
- * Found an SSL port for clients that is not bound to 127.0.0.1 and handled by us, display
- * the IP:port in ISUPPORT.
- *
- * We used to advertise all ports seperated by a ';' char that matched the above criteria,
- * but this resulted in too long ISUPPORT lines if there were lots of ports to be displayed.
- * To solve this by default we now only display the first IP:port found and let the user
- * configure the exact value for the 005 token, if necessary.
- */
- sslports = portid;
- break;
- }
+ // the buffer wasn't big enough to hold all certs but gnutls changed certcount to the number of available certs,
+ // try again with a bigger buffer
+ certs.resize(certcount);
+ ret = gnutls_x509_crt_list_import(raw(), &certcount, datum.get(), GNUTLS_X509_FMT_PEM, GNUTLS_X509_CRT_LIST_IMPORT_FAIL_IF_EXCEED);
}
- }
- }
- void OnModuleRehash(User* user, const std::string ¶m)
- {
- if(param != "ssl")
- return;
+ ThrowOnError(ret, "Unable to load certificates");
- reference<SSLConfig> newconf = new SSLConfig;
- try
- {
- InitSSLConfig(newconf);
+ // Resize the vector to the actual number of certs because we rely on its size being correct
+ // when deallocating the certs
+ certs.resize(certcount);
}
- catch (ModuleException& ex)
+
+ ~X509CertList()
{
- ServerInstance->Logs->Log("m_ssl_gnutls", DEFAULT, "m_ssl_gnutls: Not applying new config. %s", ex.GetReason());
- return;
+ for (std::vector<gnutls_x509_crt_t>::iterator i = certs.begin(); i != certs.end(); ++i)
+ gnutls_x509_crt_deinit(*i);
}
- 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;
- }
+ gnutls_x509_crt_t* raw() { return &certs[0]; }
+ unsigned int size() const { return certs.size(); }
+ };
- void InitSSLConfig(SSLConfig* config)
+ class X509CRL : public refcountbase
{
- 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(NULL);
-
- ConfigTag* Conf = ServerInstance->Config->ConfValue("gnutls");
-
- cafile = Conf->getString("cafile", CONFIG_PATH "/ca.pem");
- crlfile = Conf->getString("crlfile", CONFIG_PATH "/crl.pem");
- certfile = Conf->getString("certfile", CONFIG_PATH "/cert.pem");
- keyfile = Conf->getString("keyfile", CONFIG_PATH "/key.pem");
- dh_bits = Conf->getInt("dhbits");
- std::string hashname = Conf->getString("hash", "md5");
-
- // The GnuTLS manual states that the gnutls_set_default_priority()
- // call we used previously when initializing the session is the same
- // as setting the "NORMAL" priority string.
- // Thus if the setting below is not in the config we will behave exactly
- // the same as before, when the priority setting wasn't available.
- std::string priorities = Conf->getString("priority", "NORMAL");
-
- if((dh_bits != 768) && (dh_bits != 1024) && (dh_bits != 2048) && (dh_bits != 3072) && (dh_bits != 4096))
- dh_bits = 1024;
-
- if (hashname == "md5")
- 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);
-
+ class RAIICRL
+ {
+ public:
+ gnutls_x509_crl_t crl;
- int ret;
+ RAIICRL()
+ {
+ ThrowOnError(gnutls_x509_crl_init(&crl), "gnutls_x509_crl_init() failed");
+ }
- gnutls_certificate_credentials_t& x509_cred = config->x509_cred;
+ ~RAIICRL()
+ {
+ gnutls_x509_crl_deinit(crl);
+ }
+ } crl;
- ret = gnutls_certificate_allocate_credentials(&x509_cred);
- if (ret < 0)
+ public:
+ /** Import */
+ X509CRL(const std::string& crlstr)
{
- // 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)));
+ int ret = gnutls_x509_crl_import(get(), Datum(crlstr).get(), GNUTLS_X509_FMT_PEM);
+ ThrowOnError(ret, "Unable to load certificate revocation list");
}
- if((ret =gnutls_certificate_set_x509_trust_file(x509_cred, cafile.c_str(), GNUTLS_X509_FMT_PEM)) < 0)
- ServerInstance->Logs->Log("m_ssl_gnutls",DEBUG, "m_ssl_gnutls.so: Failed to set X.509 trust file '%s': %s", cafile.c_str(), gnutls_strerror(ret));
-
- if((ret = gnutls_certificate_set_x509_crl_file (x509_cred, crlfile.c_str(), GNUTLS_X509_FMT_PEM)) < 0)
- ServerInstance->Logs->Log("m_ssl_gnutls",DEBUG, "m_ssl_gnutls.so: Failed to set X.509 CRL file '%s': %s", crlfile.c_str(), gnutls_strerror(ret));
+ gnutls_x509_crl_t& get() { return crl.crl; }
+ };
- FileReader reader;
-
- reader.LoadFile(certfile);
- std::string cert_string = reader.Contents();
- gnutls_datum_t cert_datum = { (unsigned char*)cert_string.data(), static_cast<unsigned int>(cert_string.length()) };
+#ifdef GNUTLS_NEW_PRIO_API
+ class Priority
+ {
+ gnutls_priority_t priority;
- reader.LoadFile(keyfile);
- std::string key_string = reader.Contents();
- gnutls_datum_t key_datum = { (unsigned char*)key_string.data(), static_cast<unsigned int>(key_string.length()) };
+ public:
+ Priority(const std::string& priorities)
+ {
+ // 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;
- std::vector<gnutls_x509_crt_t>& x509_certs = config->x509_certs;
+ int ret = gnutls_priority_init(&priority, priocstr, &prioerror);
+ if (ret < 0)
+ {
+ // gnutls did not understand the user supplied string
+ throw Exception("Unable to initialize priorities to \"" + priorities + "\": " + gnutls_strerror(ret) + " Syntax error at position " + ConvToStr((unsigned int) (prioerror - priocstr)));
+ }
+ }
- // 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);
- ret = gnutls_x509_crt_list_import(&x509_certs[0], &certcount, &cert_datum, GNUTLS_X509_FMT_PEM, GNUTLS_X509_CRT_LIST_IMPORT_FAIL_IF_EXCEED);
- if (ret == GNUTLS_E_SHORT_MEMORY_BUFFER)
+ ~Priority()
{
- // the buffer wasn't big enough to hold all certs but gnutls updated certcount to the number of available certs, try again with a bigger buffer
- x509_certs.resize(certcount);
- ret = gnutls_x509_crt_list_import(&x509_certs[0], &certcount, &cert_datum, GNUTLS_X509_FMT_PEM, GNUTLS_X509_CRT_LIST_IMPORT_FAIL_IF_EXCEED);
+ gnutls_priority_deinit(priority);
}
- if (ret <= 0)
+ void SetupSession(gnutls_session_t sess)
{
- // clear the vector so we won't call gnutls_x509_crt_deinit() on the (uninited) certs later
- x509_certs.clear();
- throw ModuleException("Unable to load GnuTLS server certificate (" + certfile + "): " + ((ret < 0) ? (std::string(gnutls_strerror(ret))) : "No certs could be read"));
+ gnutls_priority_set(sess, priority);
}
- x509_certs.resize(ret);
-
- gnutls_x509_privkey_t& x509_key = config->x509_key;
- if (gnutls_x509_privkey_init(&x509_key) < 0)
+ };
+#else
+ /** Dummy class, used when gnutls_priority_set() is not available
+ */
+ class Priority
+ {
+ public:
+ Priority(const std::string& priorities)
{
- // Make sure the destructor does not try to deallocate this, see above
- x509_key = NULL;
- throw ModuleException("Unable to initialize private key");
+ if (priorities != "NORMAL")
+ throw Exception("You've set a non-default priority string, but GnuTLS lacks support for it");
}
- if((ret = gnutls_x509_privkey_import(x509_key, &key_datum, GNUTLS_X509_FMT_PEM)) < 0)
- throw ModuleException("Unable to load GnuTLS server private key (" + keyfile + "): " + std::string(gnutls_strerror(ret)));
-
- if((ret = gnutls_certificate_set_x509_key(x509_cred, &x509_certs[0], certcount, x509_key)) < 0)
- throw ModuleException("Unable to set GnuTLS cert/key pair: " + std::string(gnutls_strerror(ret)));
-
- #ifdef GNUTLS_NEW_PRIO_API
- // 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)
+ static void SetupSession(gnutls_session_t sess)
{
- // gnutls did not understand the user supplied string, log and fall back to the default priorities
- ServerInstance->Logs->Log("m_ssl_gnutls",DEFAULT, "m_ssl_gnutls.so: Failed to set priorities to \"%s\": %s Syntax error at position %u, falling back to default (NORMAL)", priorities.c_str(), gnutls_strerror(ret), (unsigned int) (prioerror - priocstr));
- gnutls_priority_init(&priority, "NORMAL", NULL);
+ // Always set the default priorities
+ gnutls_set_default_priority(sess);
}
+ };
+#endif
- #else
- if (priorities != "NORMAL")
- ServerInstance->Logs->Log("m_ssl_gnutls",DEFAULT, "m_ssl_gnutls.so: You've set <gnutls:priority> to a value other than the default, but this is only supported with GnuTLS v2.1.7 or newer. Your GnuTLS version is older than that so the option will have no effect.");
- #endif
+ class CertCredentials
+ {
+ /** DH parameters associated with these credentials
+ */
+ std::auto_ptr<DHParams> dh;
- #if(GNUTLS_VERSION_MAJOR < 2 || ( GNUTLS_VERSION_MAJOR == 2 && GNUTLS_VERSION_MINOR < 12 ) )
- gnutls_certificate_client_set_retrieve_function (x509_cred, cert_callback);
- #else
- gnutls_certificate_set_retrieve_function (x509_cred, cert_callback);
- #endif
+ protected:
+ gnutls_certificate_credentials_t cred;
- gnutls_dh_params_t& dh_params = config->dh_params;
- ret = gnutls_dh_params_init(&dh_params);
- if (ret < 0)
+ public:
+ CertCredentials()
{
- // 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;
+ ThrowOnError(gnutls_certificate_allocate_credentials(&cred), "Cannot allocate certificate credentials");
}
- std::string dhfile = Conf->getString("dhfile");
- if (!dhfile.empty())
+ ~CertCredentials()
{
- // Try to load DH params from file
- reader.LoadFile(dhfile);
- std::string dhstring = reader.Contents();
- gnutls_datum_t dh_datum = { (unsigned char*)dhstring.data(), static_cast<unsigned int>(dhstring.length()) };
-
- if ((ret = gnutls_dh_params_import_pkcs3(dh_params, &dh_datum, GNUTLS_X509_FMT_PEM)) < 0)
- {
- // 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(dh_params);
- }
+ gnutls_certificate_free_credentials(cred);
}
- else
+
+ /** Associates these credentials with the session
+ */
+ void SetupSession(gnutls_session_t sess)
{
- GenerateDHParams(dh_params);
+ gnutls_credentials_set(sess, GNUTLS_CRD_CERTIFICATE, cred);
}
- gnutls_certificate_set_dh_params(x509_cred, dh_params);
- }
+ /** Set the given DH parameters to be used with these credentials
+ */
+ void SetDH(std::auto_ptr<DHParams>& DH)
+ {
+ dh = DH;
+ gnutls_certificate_set_dh_params(cred, dh->get());
+ }
+ };
- void GenerateDHParams(gnutls_dh_params_t dh_params)
+ class X509Credentials : public CertCredentials
{
- // 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.
+ /** Private key
+ */
+ X509Key key;
- int ret;
+ /** Certificate list, presented to the peer
+ */
+ X509CertList certs;
- if((ret = gnutls_dh_params_generate2(dh_params, dh_bits)) < 0)
- ServerInstance->Logs->Log("m_ssl_gnutls",DEFAULT, "m_ssl_gnutls.so: Failed to generate DH parameters (%d bits): %s", dh_bits, gnutls_strerror(ret));
- }
+ /** Trusted CA, may be NULL
+ */
+ std::auto_ptr<X509CertList> trustedca;
- ~ModuleSSLGnuTLS()
- {
- currconf = NULL;
+ /** Certificate revocation list, may be NULL
+ */
+ std::auto_ptr<X509CRL> crl;
- gnutls_global_deinit();
- delete[] sessions;
- ServerInstance->GenRandom = &ServerInstance->HandleGenRandom;
- }
+ 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, cert_cb_last_param_type* st);
- void OnCleanup(int target_type, void* item)
- {
- if(target_type == TYPE_USER)
+ public:
+ X509Credentials(const std::string& certstr, const std::string& keystr)
+ : key(keystr)
+ , certs(certstr)
{
- LocalUser* user = IS_LOCAL(static_cast<User*>(item));
+ // Throwing is ok here, the destructor of Credentials is called in that case
+ int ret = gnutls_certificate_set_x509_key(cred, certs.raw(), certs.size(), key.get());
+ ThrowOnError(ret, "Unable to set cert/key pair");
- if (user && user->eh.GetIOHook() == this)
- {
- // User is using SSL, they're a local user, and they're using one of *our* SSL ports.
- // Potentially there could be multiple SSL modules loaded at once on different ports.
- ServerInstance->Users->QuitUser(user, "SSL module unloading");
- }
+#ifdef GNUTLS_NEW_CERT_CALLBACK_API
+ gnutls_certificate_set_retrieve_function(cred, cert_callback);
+#else
+ gnutls_certificate_client_set_retrieve_function(cred, cert_callback);
+#endif
}
- }
- Version GetVersion()
- {
- return Version("Provides SSL support for clients", VF_VENDOR);
- }
+ /** Sets the trusted CA and the certificate revocation list
+ * to use when verifying certificates
+ */
+ void SetCA(std::auto_ptr<X509CertList>& certlist, std::auto_ptr<X509CRL>& CRL)
+ {
+ // Do nothing if certlist is NULL
+ if (certlist.get())
+ {
+ int ret = gnutls_certificate_set_x509_trust(cred, certlist->raw(), certlist->size());
+ ThrowOnError(ret, "gnutls_certificate_set_x509_trust() failed");
+ if (CRL.get())
+ {
+ ret = gnutls_certificate_set_x509_crl(cred, &CRL->get(), 1);
+ ThrowOnError(ret, "gnutls_certificate_set_x509_crl() failed");
+ }
- void On005Numeric(std::string &output)
- {
- if (!sslports.empty())
- output.append(" SSL=" + sslports);
- if (starttls.enabled)
- output.append(" STARTTLS");
- }
+ trustedca = certlist;
+ crl = CRL;
+ }
+ }
+ };
- void OnHookIO(StreamSocket* user, ListenSocket* lsb)
+ class DataReader
{
- if (!user->GetIOHook() && lsb->bind_tag->getString("ssl") == "gnutls")
+ int retval;
+#ifdef INSPIRCD_GNUTLS_HAS_RECV_PACKET
+ gnutls_packet_t packet;
+
+ public:
+ DataReader(gnutls_session_t sess)
{
- /* Hook the user with our module */
- user->AddIOHook(this);
+ // Using the packet API avoids the final copy of the data which GnuTLS does if we supply
+ // our own buffer. Instead, we get the buffer containing the data from GnuTLS and copy it
+ // to the recvq directly from there in appendto().
+ retval = gnutls_record_recv_packet(sess, &packet);
}
- }
- void OnRequest(Request& request)
- {
- if (strcmp("GET_SSL_CERT", request.id) == 0)
+ void appendto(std::string& recvq)
{
- SocketCertificateRequest& req = static_cast<SocketCertificateRequest&>(request);
- int fd = req.sock->GetFd();
- issl_session* session = &sessions[fd];
+ // Copy data from GnuTLS buffers to recvq
+ gnutls_datum_t datum;
+ gnutls_packet_get(packet, &datum, NULL);
+ recvq.append(reinterpret_cast<const char*>(datum.data), datum.size);
- req.cert = session->cert;
+ gnutls_packet_deinit(packet);
}
- else if (!strcmp("GET_RAW_SSL_SESSION", request.id))
+#else
+ char* const buffer;
+
+ public:
+ DataReader(gnutls_session_t sess)
+ : buffer(ServerInstance->GetReadBuffer())
{
- SSLRawSessionRequest& req = static_cast<SSLRawSessionRequest&>(request);
- if ((req.fd >= 0) && (req.fd < ServerInstance->SE->GetMaxFds()))
- req.data = reinterpret_cast<void*>(sessions[req.fd].sess);
+ // Read data from GnuTLS buffers into ReadBuffer
+ retval = gnutls_record_recv(sess, buffer, ServerInstance->Config->NetBufferSize);
}
- }
- void InitSession(StreamSocket* user, bool me_server)
- {
- issl_session* session = &sessions[user->GetFd()];
+ void appendto(std::string& recvq)
+ {
+ // Copy data from ReadBuffer to recvq
+ recvq.append(buffer, retval);
+ }
+#endif
- gnutls_init(&session->sess, me_server ? GNUTLS_SERVER : GNUTLS_CLIENT);
- session->socket = user;
- session->config = currconf;
+ int ret() const { return retval; }
+ };
- #ifdef GNUTLS_NEW_PRIO_API
- gnutls_priority_set(session->sess, currconf->priority);
- #else
- gnutls_set_default_priority(session->sess);
- #endif
- 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);
- gnutls_transport_set_pull_function(session->sess, gnutls_pull_wrapper);
+ class Profile : public refcountbase
+ {
+ /** Name of this profile
+ */
+ const std::string name;
- if (me_server)
- gnutls_certificate_server_set_request(session->sess, GNUTLS_CERT_REQUEST); // Request client certificate if any.
+ /** X509 certificate(s) and key
+ */
+ X509Credentials x509cred;
- Handshake(session, user);
- }
-
- void OnStreamSocketAccept(StreamSocket* user, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server)
- {
- issl_session* session = &sessions[user->GetFd()];
-
- /* For STARTTLS: Don't try and init a session on a socket that already has a session */
- if (session->sess)
- return;
-
- InitSession(user, true);
- }
-
- void OnStreamSocketConnect(StreamSocket* user)
- {
- InitSession(user, false);
- }
-
- void OnStreamSocketClose(StreamSocket* user)
- {
- CloseSession(&sessions[user->GetFd()]);
- }
+ /** The minimum length in bits for the DH prime to be accepted as a client
+ */
+ unsigned int min_dh_bits;
- int OnStreamSocketRead(StreamSocket* user, std::string& recvq)
- {
- issl_session* session = &sessions[user->GetFd()];
+ /** Hashing algorithm to use when generating certificate fingerprints
+ */
+ Hash hash;
- if (!session->sess)
+ /** Priorities for ciphers, compression methods, etc.
+ */
+ Priority priority;
+
+ Profile(const std::string& profilename, const std::string& certstr, const std::string& keystr,
+ std::auto_ptr<DHParams>& DH, unsigned int mindh, const std::string& hashstr,
+ const std::string& priostr, std::auto_ptr<X509CertList>& CA, std::auto_ptr<X509CRL>& CRL)
+ : name(profilename)
+ , x509cred(certstr, keystr)
+ , min_dh_bits(mindh)
+ , hash(hashstr)
+ , priority(priostr)
{
- CloseSession(session);
- user->SetError("No SSL session");
- return -1;
+ x509cred.SetDH(DH);
+ x509cred.SetCA(CA, CRL);
}
- if (session->status == ISSL_HANDSHAKING_READ || session->status == ISSL_HANDSHAKING_WRITE)
+ static std::string ReadFile(const std::string& filename)
{
- // The handshake isn't finished, try to finish it.
-
- if(!Handshake(session, user))
- {
- if (session->status != ISSL_CLOSING)
- return 0;
- return -1;
- }
+ FileReader reader(filename);
+ std::string ret = reader.GetString();
+ if (ret.empty())
+ throw Exception("Cannot read file " + filename);
+ return ret;
}
- // If we resumed the handshake then session->status will be ISSL_HANDSHAKEN.
-
- if (session->status == ISSL_HANDSHAKEN)
+ public:
+ static reference<Profile> Create(const std::string& profilename, ConfigTag* tag)
{
- char* buffer = ServerInstance->GetReadBuffer();
- size_t bufsiz = ServerInstance->Config->NetBufferSize;
- int ret = gnutls_record_recv(session->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)
+ std::string certstr = ReadFile(tag->getString("certfile", "cert.pem"));
+ std::string keystr = ReadFile(tag->getString("keyfile", "key.pem"));
+
+ std::auto_ptr<DHParams> dh;
+ int gendh = tag->getInt("gendh");
+ if (gendh)
{
- user->SetError("Connection closed");
- CloseSession(session);
- return -1;
+ gendh = (gendh < 1024 ? 1024 : gendh);
+ dh = DHParams::Generate(gendh);
}
else
+ dh = DHParams::Import(ReadFile(tag->getString("dhfile", "dhparams.pem")));
+
+ // Use default priority string if this tag does not specify one
+ std::string priostr = tag->getString("priority", "NORMAL");
+ unsigned int mindh = tag->getInt("mindhbits", 1024);
+ std::string hashstr = tag->getString("hash", "md5");
+
+ // Load trusted CA and revocation list, if set
+ std::auto_ptr<X509CertList> ca;
+ std::auto_ptr<X509CRL> crl;
+ std::string filename = tag->getString("cafile");
+ if (!filename.empty())
{
- user->SetError(gnutls_strerror(ret));
- CloseSession(session);
- return -1;
- }
- }
- else if (session->status == ISSL_CLOSING)
- return -1;
-
- return 0;
- }
+ ca.reset(new X509CertList(ReadFile(filename)));
- int OnStreamSocketWrite(StreamSocket* user, std::string& sendq)
- {
- issl_session* session = &sessions[user->GetFd()];
+ filename = tag->getString("crlfile");
+ if (!filename.empty())
+ crl.reset(new X509CRL(ReadFile(filename)));
+ }
- if (!session->sess)
- {
- CloseSession(session);
- user->SetError("No SSL session");
- return -1;
+ return new Profile(profilename, certstr, keystr, dh, mindh, hashstr, priostr, ca, crl);
}
- if (session->status == ISSL_HANDSHAKING_WRITE || session->status == ISSL_HANDSHAKING_READ)
+ /** Set up the given session with the settings in this profile
+ */
+ void SetupSession(gnutls_session_t sess)
{
- // The handshake isn't finished, try to finish it.
- Handshake(session, user);
- if (session->status != ISSL_CLOSING)
- return 0;
- return -1;
+ priority.SetupSession(sess);
+ x509cred.SetupSession(sess);
+ gnutls_dh_set_prime_bits(sess, min_dh_bits);
+
+ // Request client certificate if we are a server, no-op if we're a client
+ gnutls_certificate_server_set_request(sess, GNUTLS_CERT_REQUEST);
}
- int ret = 0;
+ const std::string& GetName() const { return name; }
+ X509Credentials& GetX509Credentials() { return x509cred; }
+ gnutls_digest_algorithm_t GetHash() const { return hash.get(); }
+ };
+}
- if (session->status == ISSL_HANDSHAKEN)
- {
- ret = gnutls_record_send(session->sess, sendq.data(), sendq.length());
+class GnuTLSIOHook : public SSLIOHook
+{
+ private:
+ gnutls_session_t sess;
+ issl_status status;
+ reference<GnuTLS::Profile> profile;
- 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));
- CloseSession(session);
- return -1;
- }
+ void CloseSession()
+ {
+ if (this->sess)
+ {
+ gnutls_bye(this->sess, GNUTLS_SHUT_WR);
+ gnutls_deinit(this->sess);
}
-
- return 0;
+ sess = NULL;
+ certificate = NULL;
+ status = ISSL_NONE;
}
- bool Handshake(issl_session* session, StreamSocket* user)
+ // Returns 1 if handshake succeeded, 0 if it is still in progress, -1 if it failed
+ int Handshake(StreamSocket* user)
{
- int ret = gnutls_handshake(session->sess);
+ int ret = gnutls_handshake(this->sess);
if (ret < 0)
{
if(ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED)
{
// Handshake needs resuming later, read() or write() would have blocked.
+ this->status = ISSL_HANDSHAKING;
- if(gnutls_record_get_direction(session->sess) == 0)
+ if (gnutls_record_get_direction(this->sess) == 0)
{
// gnutls_handshake() wants to read() again.
- session->status = ISSL_HANDSHAKING_READ;
- ServerInstance->SE->ChangeEventMask(user, FD_WANT_POLL_READ | FD_WANT_NO_WRITE);
+ SocketEngine::ChangeEventMask(user, FD_WANT_POLL_READ | FD_WANT_NO_WRITE);
}
else
{
// gnutls_handshake() wants to write() again.
- session->status = ISSL_HANDSHAKING_WRITE;
- ServerInstance->SE->ChangeEventMask(user, FD_WANT_NO_READ | FD_WANT_SINGLE_WRITE);
+ SocketEngine::ChangeEventMask(user, FD_WANT_NO_READ | FD_WANT_SINGLE_WRITE);
}
+
+ return 0;
}
else
{
user->SetError("Handshake Failed - " + std::string(gnutls_strerror(ret)));
- CloseSession(session);
- session->status = ISSL_CLOSING;
+ CloseSession();
+ return -1;
}
-
- return false;
}
else
{
// Change the seesion state
- session->status = ISSL_HANDSHAKEN;
+ this->status = ISSL_HANDSHAKEN;
- VerifyCertificate(session,user);
+ VerifyCertificate();
// Finish writing, if any left
- ServerInstance->SE->ChangeEventMask(user, FD_WANT_POLL_READ | FD_WANT_NO_WRITE | FD_ADD_TRIAL_WRITE);
-
- return true;
- }
- }
+ SocketEngine::ChangeEventMask(user, FD_WANT_POLL_READ | FD_WANT_NO_WRITE | FD_ADD_TRIAL_WRITE);
- void OnUserConnect(LocalUser* user)
- {
- if (user->eh.GetIOHook() == this)
- {
- if (sessions[user->eh.GetFd()].sess)
- {
- const gnutls_session_t& sess = sessions[user->eh.GetFd()].sess;
- std::string cipher = UnknownIfNULL(gnutls_kx_get_name(gnutls_kx_get(sess)));
- cipher.append("-").append(UnknownIfNULL(gnutls_cipher_get_name(gnutls_cipher_get(sess)))).append("-");
- cipher.append(UnknownIfNULL(gnutls_mac_get_name(gnutls_mac_get(sess))));
-
- ssl_cert* cert = sessions[user->eh.GetFd()].cert;
- 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 CloseSession(issl_session* session)
- {
- if (session->sess)
- {
- gnutls_bye(session->sess, GNUTLS_SHUT_WR);
- gnutls_deinit(session->sess);
+ return 1;
}
- session->socket = NULL;
- session->sess = NULL;
- session->cert = NULL;
- session->status = ISSL_NONE;
- session->config = NULL;
}
- void VerifyCertificate(issl_session* session, StreamSocket* user)
+ void VerifyCertificate()
{
- if (!session->sess || !user)
- return;
-
- unsigned int status;
+ unsigned int certstatus;
const gnutls_datum_t* cert_list;
int ret;
unsigned int cert_list_size;
gnutls_x509_crt_t cert;
- char name[MAXBUF];
- unsigned char digest[MAXBUF];
+ char str[512];
+ unsigned char digest[512];
size_t digest_size = sizeof(digest);
- size_t name_size = sizeof(name);
+ size_t name_size = sizeof(str);
ssl_cert* certinfo = new ssl_cert;
- session->cert = certinfo;
+ this->certificate = 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(session->sess, &status);
+ ret = gnutls_certificate_verify_peers2(this->sess, &certstatus);
if (ret < 0)
{
return;
}
- 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);
+ certinfo->invalid = (certstatus & GNUTLS_CERT_INVALID);
+ certinfo->unknownsigner = (certstatus & GNUTLS_CERT_SIGNER_NOT_FOUND);
+ certinfo->revoked = (certstatus & GNUTLS_CERT_REVOKED);
+ certinfo->trusted = !(certstatus & 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(session->sess) != GNUTLS_CRT_X509)
+ if (gnutls_certificate_type_get(this->sess) != GNUTLS_CRT_X509)
{
certinfo->error = "No X509 keys sent";
return;
}
cert_list_size = 0;
- cert_list = gnutls_certificate_get_peers(session->sess, &cert_list_size);
+ cert_list = gnutls_certificate_get_peers(this->sess, &cert_list_size);
if (cert_list == NULL)
{
certinfo->error = "No certificate was found";
goto info_done_dealloc;
}
- if (gnutls_x509_crt_get_dn(cert, name, &name_size) == 0)
+ if (gnutls_x509_crt_get_dn(cert, str, &name_size) == 0)
{
std::string& dn = certinfo->dn;
- dn = name;
+ dn = str;
// 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();
}
- name_size = sizeof(name);
- if (gnutls_x509_crt_get_issuer_dn(cert, name, &name_size) == 0)
+ name_size = sizeof(str);
+ if (gnutls_x509_crt_get_issuer_dn(cert, str, &name_size) == 0)
{
std::string& issuer = certinfo->issuer;
- issuer = name;
+ issuer = str;
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 ((ret = gnutls_x509_crt_get_fingerprint(cert, profile->GetHash(), digest, &digest_size)) < 0)
{
certinfo->error = gnutls_strerror(ret);
}
else
{
- certinfo->fingerprint = irc::hex(digest, digest_size);
+ certinfo->fingerprint = BinToHex(digest, digest_size);
}
/* Beware here we do not check for errors.
gnutls_x509_crt_deinit(cert);
}
- void OnEvent(Event& ev)
+ // Returns 1 if application I/O should proceed, 0 if it must wait for the underlying protocol to progress, -1 on fatal error
+ int PrepareIO(StreamSocket* sock)
+ {
+ if (status == ISSL_HANDSHAKEN)
+ return 1;
+ else if (status == ISSL_HANDSHAKING)
+ {
+ // The handshake isn't finished, try to finish it
+ return Handshake(sock);
+ }
+
+ CloseSession();
+ sock->SetError("No SSL session");
+ return -1;
+ }
+
+ static const char* UnknownIfNULL(const char* str)
+ {
+ return str ? str : "UNKNOWN";
+ }
+
+ static ssize_t gnutls_pull_wrapper(gnutls_transport_ptr_t session_wrap, void* buffer, size_t size)
+ {
+ StreamSocket* sock = reinterpret_cast<StreamSocket*>(session_wrap);
+#ifdef _WIN32
+ GnuTLSIOHook* session = static_cast<GnuTLSIOHook*>(sock->GetIOHook());
+#endif
+
+ if (sock->GetEventMask() & FD_READ_WILL_BLOCK)
+ {
+#ifdef _WIN32
+ gnutls_transport_set_errno(session->sess, EAGAIN);
+#else
+ errno = EAGAIN;
+#endif
+ return -1;
+ }
+
+ int rv = SocketEngine::Recv(sock, reinterpret_cast<char *>(buffer), size, 0);
+
+#ifdef _WIN32
+ if (rv < 0)
+ {
+ /* Windows doesn't use errno, but gnutls does, so check SocketEngine::IgnoreError()
+ * and then set errno appropriately.
+ * The gnutls library may also have a different errno variable than us, see
+ * gnutls_transport_set_errno(3).
+ */
+ gnutls_transport_set_errno(session->sess, SocketEngine::IgnoreError() ? EAGAIN : errno);
+ }
+#endif
+
+ if (rv < (int)size)
+ SocketEngine::ChangeEventMask(sock, FD_READ_WILL_BLOCK);
+ return rv;
+ }
+
+#ifdef INSPIRCD_GNUTLS_HAS_VECTOR_PUSH
+ static ssize_t VectorPush(gnutls_transport_ptr_t transportptr, const giovec_t* iov, int iovcnt)
+ {
+ StreamSocket* sock = reinterpret_cast<StreamSocket*>(transportptr);
+#ifdef _WIN32
+ GnuTLSIOHook* session = static_cast<GnuTLSIOHook*>(sock->GetIOHook());
+#endif
+
+ if (sock->GetEventMask() & FD_WRITE_WILL_BLOCK)
+ {
+#ifdef _WIN32
+ gnutls_transport_set_errno(session->sess, EAGAIN);
+#else
+ errno = EAGAIN;
+#endif
+ return -1;
+ }
+
+ // Cast the giovec_t to iovec not to IOVector so the correct function is called on Windows
+ int ret = SocketEngine::WriteV(sock, reinterpret_cast<const iovec*>(iov), iovcnt);
+#ifdef _WIN32
+ // See the function above for more info about the usage of gnutls_transport_set_errno() on Windows
+ if (ret < 0)
+ gnutls_transport_set_errno(session->sess, SocketEngine::IgnoreError() ? EAGAIN : errno);
+#endif
+
+ int size = 0;
+ for (int i = 0; i < iovcnt; i++)
+ size += iov[i].iov_len;
+
+ if (ret < size)
+ SocketEngine::ChangeEventMask(sock, FD_WRITE_WILL_BLOCK);
+ return ret;
+ }
+
+#else // INSPIRCD_GNUTLS_HAS_VECTOR_PUSH
+ static ssize_t gnutls_push_wrapper(gnutls_transport_ptr_t session_wrap, const void* buffer, size_t size)
+ {
+ StreamSocket* sock = reinterpret_cast<StreamSocket*>(session_wrap);
+#ifdef _WIN32
+ GnuTLSIOHook* session = static_cast<GnuTLSIOHook*>(sock->GetIOHook());
+#endif
+
+ if (sock->GetEventMask() & FD_WRITE_WILL_BLOCK)
+ {
+#ifdef _WIN32
+ gnutls_transport_set_errno(session->sess, EAGAIN);
+#else
+ errno = EAGAIN;
+#endif
+ return -1;
+ }
+
+ int rv = SocketEngine::Send(sock, reinterpret_cast<const char *>(buffer), size, 0);
+
+#ifdef _WIN32
+ if (rv < 0)
+ {
+ /* Windows doesn't use errno, but gnutls does, so check SocketEngine::IgnoreError()
+ * and then set errno appropriately.
+ * The gnutls library may also have a different errno variable than us, see
+ * gnutls_transport_set_errno(3).
+ */
+ gnutls_transport_set_errno(session->sess, SocketEngine::IgnoreError() ? EAGAIN : errno);
+ }
+#endif
+
+ if (rv < (int)size)
+ SocketEngine::ChangeEventMask(sock, FD_WRITE_WILL_BLOCK);
+ return rv;
+ }
+#endif // INSPIRCD_GNUTLS_HAS_VECTOR_PUSH
+
+ public:
+ GnuTLSIOHook(IOHookProvider* hookprov, StreamSocket* sock, inspircd_gnutls_session_init_flags_t flags, const reference<GnuTLS::Profile>& sslprofile)
+ : SSLIOHook(hookprov)
+ , sess(NULL)
+ , status(ISSL_NONE)
+ , profile(sslprofile)
+ {
+ gnutls_init(&sess, flags);
+ gnutls_transport_set_ptr(sess, reinterpret_cast<gnutls_transport_ptr_t>(sock));
+#ifdef INSPIRCD_GNUTLS_HAS_VECTOR_PUSH
+ gnutls_transport_set_vec_push_function(sess, VectorPush);
+#else
+ gnutls_transport_set_push_function(sess, gnutls_push_wrapper);
+#endif
+ gnutls_transport_set_pull_function(sess, gnutls_pull_wrapper);
+ profile->SetupSession(sess);
+
+ sock->AddIOHook(this);
+ Handshake(sock);
+ }
+
+ void OnStreamSocketClose(StreamSocket* user) CXX11_OVERRIDE
+ {
+ CloseSession();
+ }
+
+ int OnStreamSocketRead(StreamSocket* user, std::string& recvq) CXX11_OVERRIDE
+ {
+ // Finish handshake if needed
+ int prepret = PrepareIO(user);
+ if (prepret <= 0)
+ return prepret;
+
+ // If we resumed the handshake then this->status will be ISSL_HANDSHAKEN.
+ {
+ GnuTLS::DataReader reader(sess);
+ int ret = reader.ret();
+ if (ret > 0)
+ {
+ reader.appendto(recvq);
+ return 1;
+ }
+ else if (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED)
+ {
+ return 0;
+ }
+ else if (ret == 0)
+ {
+ user->SetError("Connection closed");
+ CloseSession();
+ return -1;
+ }
+ else
+ {
+ user->SetError(gnutls_strerror(ret));
+ CloseSession();
+ return -1;
+ }
+ }
+ }
+
+ int OnStreamSocketWrite(StreamSocket* user, std::string& sendq) CXX11_OVERRIDE
+ {
+ // Finish handshake if needed
+ int prepret = PrepareIO(user);
+ if (prepret <= 0)
+ return prepret;
+
+ // Session is ready for transferring application data
+ int ret = 0;
+
+ {
+ ret = gnutls_record_send(this->sess, sendq.data(), sendq.length());
+
+ if (ret == (int)sendq.length())
+ {
+ SocketEngine::ChangeEventMask(user, FD_WANT_NO_WRITE);
+ return 1;
+ }
+ else if (ret > 0)
+ {
+ sendq.erase(0, ret);
+ SocketEngine::ChangeEventMask(user, FD_WANT_SINGLE_WRITE);
+ return 0;
+ }
+ else if (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED || ret == 0)
+ {
+ SocketEngine::ChangeEventMask(user, FD_WANT_SINGLE_WRITE);
+ return 0;
+ }
+ else // (ret < 0)
+ {
+ user->SetError(gnutls_strerror(ret));
+ CloseSession();
+ return -1;
+ }
+ }
+ }
+
+ void TellCiphersAndFingerprint(LocalUser* user)
+ {
+ if (sess)
+ {
+ std::string text = "*** You are connected using SSL cipher '";
+ GetCiphersuite(text);
+ text += '\'';
+ if (!certificate->fingerprint.empty())
+ text += " and your SSL certificate fingerprint is " + certificate->fingerprint;
+
+ user->WriteNotice(text);
+ }
+ }
+
+ void GetCiphersuite(std::string& out) const
+ {
+ out.append(UnknownIfNULL(gnutls_protocol_get_name(gnutls_protocol_get_version(sess)))).push_back('-');
+ out.append(UnknownIfNULL(gnutls_kx_get_name(gnutls_kx_get(sess)))).push_back('-');
+ out.append(UnknownIfNULL(gnutls_cipher_get_name(gnutls_cipher_get(sess)))).push_back('-');
+ out.append(UnknownIfNULL(gnutls_mac_get_name(gnutls_mac_get(sess))));
+ }
+
+ GnuTLS::Profile* GetProfile() { return profile; }
++ bool IsHandshakeDone() const { return (status == ISSL_HANDSHAKEN); }
+};
+
+int GnuTLS::X509Credentials::cert_callback(gnutls_session_t sess, const gnutls_datum_t* req_ca_rdn, int nreqs, const gnutls_pk_algorithm_t* sign_algos, int sign_algos_length, cert_cb_last_param_type* st)
+{
+#ifndef GNUTLS_NEW_CERT_CALLBACK_API
+ st->type = GNUTLS_CRT_X509;
+#else
+ st->cert_type = GNUTLS_CRT_X509;
+ st->key_type = GNUTLS_PRIVKEY_X509;
+#endif
+ StreamSocket* sock = reinterpret_cast<StreamSocket*>(gnutls_transport_get_ptr(sess));
+ GnuTLS::X509Credentials& cred = static_cast<GnuTLSIOHook*>(sock->GetIOHook())->GetProfile()->GetX509Credentials();
+
+ st->ncerts = cred.certs.size();
+ st->cert.x509 = cred.certs.raw();
+ st->key.x509 = cred.key.get();
+ st->deinit_all = 0;
+
+ return 0;
+}
+
+class GnuTLSIOHookProvider : public refcountbase, public IOHookProvider
+{
+ reference<GnuTLS::Profile> profile;
+
+ public:
+ GnuTLSIOHookProvider(Module* mod, reference<GnuTLS::Profile>& prof)
+ : IOHookProvider(mod, "ssl/" + prof->GetName(), IOHookProvider::IOH_SSL)
+ , profile(prof)
+ {
+ ServerInstance->Modules->AddService(*this);
+ }
+
+ ~GnuTLSIOHookProvider()
+ {
+ ServerInstance->Modules->DelService(*this);
+ }
+
+ void OnAccept(StreamSocket* sock, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server) CXX11_OVERRIDE
{
- if (starttls.enabled)
- capHandler.HandleEvent(ev);
+ new GnuTLSIOHook(this, sock, GNUTLS_SERVER, profile);
+ }
+
+ void OnConnect(StreamSocket* sock) CXX11_OVERRIDE
+ {
+ new GnuTLSIOHook(this, sock, GNUTLS_CLIENT, profile);
+ }
+};
+
+class ModuleSSLGnuTLS : public Module
+{
+ typedef std::vector<reference<GnuTLSIOHookProvider> > ProfileList;
+
+ // First member of the class, gets constructed first and destructed last
+ GnuTLS::Init libinit;
+ RandGen randhandler;
+ ProfileList profiles;
+
+ void ReadProfiles()
+ {
+ // First, store all profiles in a new, temporary container. If no problems occur, swap the two
+ // containers; this way if something goes wrong we can go back and continue using the current profiles,
+ // avoiding unpleasant situations where no new SSL connections are possible.
+ ProfileList newprofiles;
+
+ ConfigTagList tags = ServerInstance->Config->ConfTags("sslprofile");
+ if (tags.first == tags.second)
+ {
+ // No <sslprofile> tags found, create a profile named "gnutls" from settings in the <gnutls> block
+ const std::string defname = "gnutls";
+ ConfigTag* tag = ServerInstance->Config->ConfValue(defname);
+ ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "No <sslprofile> tags found; using settings from the <gnutls> tag");
+
+ try
+ {
+ reference<GnuTLS::Profile> profile(GnuTLS::Profile::Create(defname, tag));
+ newprofiles.push_back(new GnuTLSIOHookProvider(this, profile));
+ }
+ catch (CoreException& ex)
+ {
+ throw ModuleException("Error while initializing the default SSL profile - " + ex.GetReason());
+ }
+ }
+
+ for (ConfigIter i = tags.first; i != tags.second; ++i)
+ {
+ ConfigTag* tag = i->second;
+ if (tag->getString("provider") != "gnutls")
+ continue;
+
+ std::string name = tag->getString("name");
+ if (name.empty())
+ {
+ ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Ignoring <sslprofile> tag without name at " + tag->getTagLocation());
+ continue;
+ }
+
+ reference<GnuTLS::Profile> profile;
+ try
+ {
+ profile = GnuTLS::Profile::Create(name, tag);
+ }
+ catch (CoreException& ex)
+ {
+ throw ModuleException("Error while initializing SSL profile \"" + name + "\" at " + tag->getTagLocation() + " - " + ex.GetReason());
+ }
+
+ newprofiles.push_back(new GnuTLSIOHookProvider(this, profile));
+ }
+
+ // New profiles are ok, begin using them
+ // Old profiles are deleted when their refcount drops to zero
+ profiles.swap(newprofiles);
}
- ModResult OnCheckReady(LocalUser* user)
+ public:
+ ModuleSSLGnuTLS()
{
- if ((user->eh.GetIOHook() == this) && (sessions[user->eh.GetFd()].status != ISSL_HANDSHAKEN))
- return MOD_RES_DENY;
+#ifndef GNUTLS_HAS_RND
+ gcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0);
+#endif
+ }
+
+ void init() CXX11_OVERRIDE
+ {
+ ReadProfiles();
+ ServerInstance->GenRandom = &randhandler;
+ }
+
+ void OnModuleRehash(User* user, const std::string ¶m) CXX11_OVERRIDE
+ {
+ if(param != "ssl")
+ return;
+
+ try
+ {
+ ReadProfiles();
+ }
+ catch (ModuleException& ex)
+ {
+ ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, ex.GetReason() + " Not applying settings.");
+ }
+ }
+
+ ~ModuleSSLGnuTLS()
+ {
+ ServerInstance->GenRandom = &ServerInstance->HandleGenRandom;
+ }
+
+ void OnCleanup(int target_type, void* item) CXX11_OVERRIDE
+ {
+ if(target_type == TYPE_USER)
+ {
+ LocalUser* user = IS_LOCAL(static_cast<User*>(item));
+
+ if (user && user->eh.GetIOHook() && user->eh.GetIOHook()->prov->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() CXX11_OVERRIDE
+ {
+ return Version("Provides SSL support for clients", VF_VENDOR);
+ }
+
+ void OnUserConnect(LocalUser* user) CXX11_OVERRIDE
+ {
+ IOHook* hook = user->eh.GetIOHook();
+ if (hook && hook->prov->creator == this)
+ static_cast<GnuTLSIOHook*>(hook)->TellCiphersAndFingerprint(user);
+ }
++
++ ModResult OnCheckReady(LocalUser* user) CXX11_OVERRIDE
++ {
++ if ((user->eh.GetIOHook()) && (user->eh.GetIOHook()->prov->creator == this))
++ {
++ GnuTLSIOHook* iohook = static_cast<GnuTLSIOHook*>(user->eh.GetIOHook());
++ if (!iohook->IsHandshakeDone())
++ return MOD_RES_DENY;
++ }
++
+ return MOD_RES_PASSTHRU;
+ }
};
MODULE_INIT(ModuleSSLGnuTLS)
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
- /* HACK: This prevents OpenSSL on OS X 10.7 and later from spewing deprecation
- * warnings for every single function call. As far as I (SaberUK) know, Apple
- * have no plans to remove OpenSSL so this warning just causes needless spam.
- */
-#ifdef __APPLE__
-# define __AVAILABILITYMACROS__
-# define DEPRECATED_IN_MAC_OS_X_VERSION_10_7_AND_LATER
-#endif
-
+
#include "inspircd.h"
+#include "iohook.h"
+#include "modules/ssl.h"
+
+// Ignore OpenSSL deprecation warnings on OS X Lion and newer.
+#if defined __APPLE__
+# pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+#endif
+
+// Fix warnings about the use of `long long` on C++03.
+#if defined __clang__
+# pragma clang diagnostic ignored "-Wc++11-long-long"
+#elif defined __GNUC__
+# pragma GCC diagnostic ignored "-Wlong-long"
+#endif
+
#include <openssl/ssl.h>
#include <openssl/err.h>
-#include "ssl.h"
#ifdef _WIN32
# pragma comment(lib, "ssleay32.lib")
# pragma comment(lib, "libeay32.lib")
-# undef MAX_DESCRIPTORS
-# define MAX_DESCRIPTORS 10000
#endif
-/* $ModDesc: Provides SSL support for clients */
-
-/* $LinkerFlags: if("USE_FREEBSD_BASE_SSL") -lssl -lcrypto */
-/* $CompileFlags: if(!"USE_FREEBSD_BASE_SSL") pkgconfversion("openssl","0.9.7") pkgconfincludes("openssl","/openssl/ssl.h","") */
-/* $LinkerFlags: if(!"USE_FREEBSD_BASE_SSL") rpath("pkg-config --libs openssl") pkgconflibs("openssl","/libssl.so","-lssl -lcrypto -ldl") */
-
-/* $NoPedantic */
-
-
-class ModuleSSLOpenSSL;
+/* $CompileFlags: pkgconfversion("openssl","0.9.7") pkgconfincludes("openssl","/openssl/ssl.h","") */
+/* $LinkerFlags: rpath("pkg-config --libs openssl") pkgconflibs("openssl","/libssl.so","-lssl -lcrypto") */
enum issl_status { ISSL_NONE, ISSL_HANDSHAKING, ISSL_OPEN };
static bool SelfSigned = false;
-
-#ifdef INSPIRCD_OPENSSL_ENABLE_RENEGO_DETECTION
-static ModuleSSLOpenSSL* opensslmod = NULL;
-#endif
+static int exdataindex;
char* get_error()
{
return ERR_error_string(ERR_get_error(), NULL);
}
-static int error_callback(const char *str, size_t len, void *u);
+static int OnVerify(int preverify_ok, X509_STORE_CTX* ctx);
+static void StaticSSLInfoCallback(const SSL* ssl, int where, int rc);
-/** Represents an SSL user's extra data
- */
-class issl_session
+namespace OpenSSL
{
-public:
- SSL* sess;
- issl_status status;
- reference<ssl_cert> cert;
-
- bool outbound;
- bool data_to_write;
-
- issl_session()
- : sess(NULL)
- , status(ISSL_NONE)
+ class Exception : public ModuleException
{
- outbound = false;
- data_to_write = false;
- }
-};
-
-static int OnVerify(int preverify_ok, X509_STORE_CTX *ctx)
-{
- /* XXX: This will allow self signed certificates.
- * In the future if we want an option to not allow this,
- * we can just return preverify_ok here, and openssl
- * will boot off self-signed and invalid peer certs.
- */
- int ve = X509_STORE_CTX_get_error(ctx);
+ public:
+ Exception(const std::string& reason)
+ : ModuleException(reason) { }
+ };
- SelfSigned = (ve == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT);
-
- return 1;
-}
+ class DHParams
+ {
+ DH* dh;
-class ModuleSSLOpenSSL : public Module
-{
- issl_session* sessions;
+ public:
+ DHParams(const std::string& filename)
+ {
+ BIO* dhpfile = BIO_new_file(filename.c_str(), "r");
+ if (dhpfile == NULL)
+ throw Exception("Couldn't open DH file " + filename);
- SSL_CTX* ctx;
- SSL_CTX* clictx;
+ dh = PEM_read_bio_DHparams(dhpfile, NULL, NULL, NULL);
+ BIO_free(dhpfile);
- long ctx_options;
- long clictx_options;
+ if (!dh)
+ throw Exception("Couldn't read DH params from file " + filename);
+ }
- std::string sslports;
- bool use_sha;
+ ~DHParams()
+ {
+ DH_free(dh);
+ }
- ServiceProvider iohook;
+ DH* get()
+ {
+ return dh;
+ }
+ };
- static void SetContextOptions(SSL_CTX* ctx, long defoptions, const std::string& ctxname, ConfigTag* tag)
+ class Context
{
- long setoptions = tag->getInt(ctxname + "setoptions");
- // User-friendly config options for setting context options
-#ifdef SSL_OP_CIPHER_SERVER_PREFERENCE
- if (tag->getBool("cipherserverpref"))
- setoptions |= SSL_OP_CIPHER_SERVER_PREFERENCE;
+ SSL_CTX* const ctx;
+ long ctx_options;
+
+ public:
+ Context(SSL_CTX* context)
+ : ctx(context)
+ {
+ // Sane default options for OpenSSL see https://www.openssl.org/docs/ssl/SSL_CTX_set_options.html
+ // and when choosing a cipher, use the server's preferences instead of the client preferences.
+ long opts = SSL_OP_NO_SSLv2 | SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION | SSL_OP_CIPHER_SERVER_PREFERENCE | SSL_OP_SINGLE_DH_USE;
+ // Only turn options on if they exist
+#ifdef SSL_OP_SINGLE_ECDH_USE
+ opts |= SSL_OP_SINGLE_ECDH_USE;
#endif
-#ifdef SSL_OP_NO_COMPRESSION
- if (!tag->getBool("compression", true))
- setoptions |= SSL_OP_NO_COMPRESSION;
+#ifdef SSL_OP_NO_TICKET
+ opts |= SSL_OP_NO_TICKET;
#endif
- if (!tag->getBool("sslv3", true))
- setoptions |= SSL_OP_NO_SSLv3;
- if (!tag->getBool("tlsv1", true))
- setoptions |= SSL_OP_NO_TLSv1;
- long clearoptions = tag->getInt(ctxname + "clearoptions");
- ServerInstance->Logs->Log("m_ssl_openssl", DEBUG, "Setting OpenSSL %s context options, default: %ld set: %ld clear: %ld", ctxname.c_str(), defoptions, setoptions, clearoptions);
+ ctx_options = SSL_CTX_set_options(ctx, opts);
+ SSL_CTX_set_mode(ctx, SSL_MODE_ENABLE_PARTIAL_WRITE | SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER);
+ SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE, OnVerify);
+ SSL_CTX_set_session_cache_mode(ctx, SSL_SESS_CACHE_OFF);
+ SSL_CTX_set_info_callback(ctx, StaticSSLInfoCallback);
+ }
- // Clear everything
- SSL_CTX_clear_options(ctx, SSL_CTX_get_options(ctx));
+ ~Context()
+ {
+ SSL_CTX_free(ctx);
+ }
- // Set the default options and what is in the conf
- SSL_CTX_set_options(ctx, defoptions | setoptions);
- long final = SSL_CTX_clear_options(ctx, clearoptions);
- ServerInstance->Logs->Log("m_ssl_openssl", DEFAULT, "OpenSSL %s context options: %ld", ctxname.c_str(), final);
- }
+ bool SetDH(DHParams& dh)
+ {
+ ERR_clear_error();
+ return (SSL_CTX_set_tmp_dh(ctx, dh.get()) >= 0);
+ }
#ifdef INSPIRCD_OPENSSL_ENABLE_ECDH
- void SetupECDH(ConfigTag* tag)
- {
- std::string curvename = tag->getString("ecdhcurve", "prime256v1");
- if (curvename.empty())
- return;
-
- int nid = OBJ_sn2nid(curvename.c_str());
- if (nid == 0)
+ void SetECDH(const std::string& curvename)
{
- ServerInstance->Logs->Log("m_ssl_openssl", DEFAULT, "m_ssl_openssl.so: Unknown curve: \"%s\"", curvename.c_str());
- return;
+ int nid = OBJ_sn2nid(curvename.c_str());
+ if (nid == 0)
+ throw Exception("Unknown curve: " + curvename);
+
+ EC_KEY* eckey = EC_KEY_new_by_curve_name(nid);
+ if (!eckey)
+ throw Exception("Unable to create EC key object");
+
+ ERR_clear_error();
+ bool ret = (SSL_CTX_set_tmp_ecdh(ctx, eckey) >= 0);
+ EC_KEY_free(eckey);
+ if (!ret)
+ throw Exception("Couldn't set ECDH parameters");
}
+#endif
- EC_KEY* eckey = EC_KEY_new_by_curve_name(nid);
- if (!eckey)
+ bool SetCiphers(const std::string& ciphers)
{
- ServerInstance->Logs->Log("m_ssl_openssl", DEFAULT, "m_ssl_openssl.so: Unable to create EC key object");
- return;
+ ERR_clear_error();
+ return SSL_CTX_set_cipher_list(ctx, ciphers.c_str());
}
- ERR_clear_error();
- if (SSL_CTX_set_tmp_ecdh(ctx, eckey) < 0)
+ bool SetCerts(const std::string& filename)
{
- ServerInstance->Logs->Log("m_ssl_openssl", DEFAULT, "m_ssl_openssl.so: Couldn't set ECDH parameters");
- ERR_print_errors_cb(error_callback, this);
+ ERR_clear_error();
+ return SSL_CTX_use_certificate_chain_file(ctx, filename.c_str());
}
- EC_KEY_free(eckey);
- }
-#endif
-
-#ifdef INSPIRCD_OPENSSL_ENABLE_RENEGO_DETECTION
- static void SSLInfoCallback(const SSL* ssl, int where, int rc)
- {
- int fd = SSL_get_fd(const_cast<SSL*>(ssl));
- issl_session& session = opensslmod->sessions[fd];
+ bool SetPrivateKey(const std::string& filename)
+ {
+ ERR_clear_error();
+ return SSL_CTX_use_PrivateKey_file(ctx, filename.c_str(), SSL_FILETYPE_PEM);
+ }
- if ((where & SSL_CB_HANDSHAKE_START) && (session.status == ISSL_OPEN))
+ bool SetCA(const std::string& filename)
{
- // The other side is trying to renegotiate, kill the connection and change status
- // to ISSL_NONE so CheckRenego() closes the session
- session.status = ISSL_NONE;
- ServerInstance->SE->Shutdown(fd, 2);
+ ERR_clear_error();
+ return SSL_CTX_load_verify_locations(ctx, filename.c_str(), 0);
}
- }
- bool CheckRenego(StreamSocket* sock, issl_session* session)
- {
- if (session->status != ISSL_NONE)
- return true;
+ long GetDefaultContextOptions() const
+ {
+ return ctx_options;
+ }
- ServerInstance->Logs->Log("m_ssl_openssl", DEBUG, "Session %p killed, attempted to renegotiate", (void*)session->sess);
- CloseSession(session);
- sock->SetError("Renegotiation is not allowed");
- return false;
- }
-#endif
+ long SetRawContextOptions(long setoptions, long clearoptions)
+ {
+ // Clear everything
+ SSL_CTX_clear_options(ctx, SSL_CTX_get_options(ctx));
- public:
+ // Set the default options and what is in the conf
+ SSL_CTX_set_options(ctx, ctx_options | setoptions);
+ return SSL_CTX_clear_options(ctx, clearoptions);
+ }
- ModuleSSLOpenSSL() : iohook(this, "ssl/openssl", SERVICE_IOHOOK)
- {
-#ifdef INSPIRCD_OPENSSL_ENABLE_RENEGO_DETECTION
- opensslmod = this;
-#endif
- sessions = new issl_session[ServerInstance->SE->GetMaxFds()];
+ SSL* CreateServerSession()
+ {
+ SSL* sess = SSL_new(ctx);
+ SSL_set_accept_state(sess); // Act as server
+ return sess;
+ }
- /* Global SSL library initialization*/
- SSL_library_init();
- SSL_load_error_strings();
+ SSL* CreateClientSession()
+ {
+ SSL* sess = SSL_new(ctx);
+ SSL_set_connect_state(sess); // Act as client
+ return sess;
+ }
+ };
- /* Build our SSL contexts:
- * NOTE: OpenSSL makes us have two contexts, one for servers and one for clients. ICK.
+ class Profile : public refcountbase
+ {
+ /** Name of this profile
*/
- ctx = SSL_CTX_new( SSLv23_server_method() );
- clictx = SSL_CTX_new( SSLv23_client_method() );
-
- SSL_CTX_set_mode(ctx, SSL_MODE_ENABLE_PARTIAL_WRITE | SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER);
- SSL_CTX_set_mode(clictx, SSL_MODE_ENABLE_PARTIAL_WRITE | SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER);
+ const std::string name;
- SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE, OnVerify);
- SSL_CTX_set_verify(clictx, SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE, OnVerify);
+ /** DH parameters in use
+ */
+ DHParams dh;
- SSL_CTX_set_session_cache_mode(ctx, SSL_SESS_CACHE_OFF);
- SSL_CTX_set_session_cache_mode(clictx, SSL_SESS_CACHE_OFF);
+ /** OpenSSL makes us have two contexts, one for servers and one for clients
+ */
+ Context ctx;
+ Context clictx;
- long opts = SSL_OP_NO_SSLv2 | SSL_OP_SINGLE_DH_USE;
- // Only turn options on if they exist
-#ifdef SSL_OP_SINGLE_ECDH_USE
- opts |= SSL_OP_SINGLE_ECDH_USE;
-#endif
-#ifdef SSL_OP_NO_TICKET
- opts |= SSL_OP_NO_TICKET;
-#endif
+ /** Digest to use when generating fingerprints
+ */
+ const EVP_MD* digest;
- ctx_options = SSL_CTX_set_options(ctx, opts);
- clictx_options = SSL_CTX_set_options(clictx, opts);
- }
+ /** Last error, set by error_callback()
+ */
+ std::string lasterr;
- void init()
- {
- // Needs the flag as it ignores a plain /rehash
- OnModuleRehash(NULL,"ssl");
- Implementation eventlist[] = { I_On005Numeric, I_OnRehash, I_OnModuleRehash, I_OnHookIO, I_OnUserConnect };
- ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
- ServerInstance->Modules->AddService(iohook);
- }
+ /** True if renegotiations are allowed, false if not
+ */
+ const bool allowrenego;
- void OnHookIO(StreamSocket* user, ListenSocket* lsb)
- {
- if (!user->GetIOHook() && lsb->bind_tag->getString("ssl") == "openssl")
+ static int error_callback(const char* str, size_t len, void* u)
{
- /* Hook the user with our module */
- user->AddIOHook(this);
+ Profile* profile = reinterpret_cast<Profile*>(u);
+ profile->lasterr = std::string(str, len - 1);
+ return 0;
}
- }
- void OnRehash(User* user)
- {
- sslports.clear();
+ /** Set raw OpenSSL context (SSL_CTX) options from a config tag
+ * @param ctxname Name of the context, client or server
+ * @param tag Config tag defining this profile
+ * @param context Context object to manipulate
+ */
+ void SetContextOptions(const std::string& ctxname, ConfigTag* tag, Context& context)
+ {
+ long setoptions = tag->getInt(ctxname + "setoptions");
+ long clearoptions = tag->getInt(ctxname + "clearoptions");
+#ifdef SSL_OP_NO_COMPRESSION
+ if (!tag->getBool("compression", true))
+ setoptions |= SSL_OP_NO_COMPRESSION;
+#endif
+ if (!tag->getBool("sslv3", true))
+ setoptions |= SSL_OP_NO_SSLv3;
+ if (!tag->getBool("tlsv1", true))
+ setoptions |= SSL_OP_NO_TLSv1;
- ConfigTag* Conf = ServerInstance->Config->ConfValue("openssl");
+ if (!setoptions && !clearoptions)
+ return; // Nothing to do
-#ifdef INSPIRCD_OPENSSL_ENABLE_RENEGO_DETECTION
- // Set the callback if we are not allowing renegotiations, unset it if we do
- if (Conf->getBool("renegotiation", true))
- {
- SSL_CTX_set_info_callback(ctx, NULL);
- SSL_CTX_set_info_callback(clictx, NULL);
+ ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "Setting %s %s context options, default: %ld set: %ld clear: %ld", name.c_str(), ctxname.c_str(), ctx.GetDefaultContextOptions(), setoptions, clearoptions);
+ long final = context.SetRawContextOptions(setoptions, clearoptions);
+ ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "%s %s context options: %ld", name.c_str(), ctxname.c_str(), final);
}
- else
- {
- SSL_CTX_set_info_callback(ctx, SSLInfoCallback);
- SSL_CTX_set_info_callback(clictx, SSLInfoCallback);
- }
-#endif
- if (Conf->getBool("showports", true))
+ public:
+ Profile(const std::string& profilename, ConfigTag* tag)
+ : name(profilename)
+ , dh(ServerInstance->Config->Paths.PrependConfig(tag->getString("dhfile", "dh.pem")))
+ , ctx(SSL_CTX_new(SSLv23_server_method()))
+ , clictx(SSL_CTX_new(SSLv23_client_method()))
+ , allowrenego(tag->getBool("renegotiation", true))
{
- sslports = Conf->getString("advertisedports");
- if (!sslports.empty())
- return;
-
- for (size_t i = 0; i < ServerInstance->ports.size(); i++)
- {
- ListenSocket* port = ServerInstance->ports[i];
- if (port->bind_tag->getString("ssl") != "openssl")
- continue;
+ if ((!ctx.SetDH(dh)) || (!clictx.SetDH(dh)))
+ throw Exception("Couldn't set DH parameters");
- const std::string& portid = port->bind_desc;
- ServerInstance->Logs->Log("m_ssl_openssl", DEFAULT, "m_ssl_openssl.so: Enabling SSL for port %s", portid.c_str());
+ std::string hash = tag->getString("hash", "md5");
+ digest = EVP_get_digestbyname(hash.c_str());
+ if (digest == NULL)
+ throw Exception("Unknown hash type " + hash);
- if (port->bind_tag->getString("type", "clients") == "clients" && port->bind_addr != "127.0.0.1")
+ std::string ciphers = tag->getString("ciphers");
+ if (!ciphers.empty())
+ {
+ if ((!ctx.SetCiphers(ciphers)) || (!clictx.SetCiphers(ciphers)))
{
- /*
- * Found an SSL port for clients that is not bound to 127.0.0.1 and handled by us, display
- * the IP:port in ISUPPORT.
- *
- * We used to advertise all ports seperated by a ';' char that matched the above criteria,
- * but this resulted in too long ISUPPORT lines if there were lots of ports to be displayed.
- * To solve this by default we now only display the first IP:port found and let the user
- * configure the exact value for the 005 token, if necessary.
- */
- sslports = portid;
- break;
+ ERR_print_errors_cb(error_callback, this);
+ throw Exception("Can't set cipher list to \"" + ciphers + "\" " + lasterr);
}
}
- }
- }
-
- void OnModuleRehash(User* user, const std::string ¶m)
- {
- if (param != "ssl")
- return;
- std::string keyfile;
- std::string certfile;
- std::string cafile;
- std::string dhfile;
- OnRehash(user);
-
- ConfigTag* conf = ServerInstance->Config->ConfValue("openssl");
+#ifdef INSPIRCD_OPENSSL_ENABLE_ECDH
+ std::string curvename = tag->getString("ecdhcurve", "prime256v1");
+ if (!curvename.empty())
+ ctx.SetECDH(curvename);
+#endif
- cafile = conf->getString("cafile", CONFIG_PATH "/ca.pem");
- certfile = conf->getString("certfile", CONFIG_PATH "/cert.pem");
- keyfile = conf->getString("keyfile", CONFIG_PATH "/key.pem");
- dhfile = conf->getString("dhfile", CONFIG_PATH "/dhparams.pem");
- std::string hash = conf->getString("hash", "md5");
- if (hash != "sha1" && hash != "md5")
- throw ModuleException("Unknown hash type " + hash);
- use_sha = (hash == "sha1");
+ SetContextOptions("server", tag, ctx);
+ SetContextOptions("client", tag, clictx);
- if (conf->getBool("customcontextoptions"))
- {
- SetContextOptions(ctx, ctx_options, "server", conf);
- SetContextOptions(clictx, clictx_options, "client", conf);
- }
+ /* Load our keys and certificates
+ * NOTE: OpenSSL's error logging API sucks, don't blame us for this clusterfuck.
+ */
+ std::string filename = ServerInstance->Config->Paths.PrependConfig(tag->getString("certfile", "cert.pem"));
+ if ((!ctx.SetCerts(filename)) || (!clictx.SetCerts(filename)))
+ {
+ ERR_print_errors_cb(error_callback, this);
+ throw Exception("Can't read certificate file: " + lasterr);
+ }
- std::string ciphers = conf->getString("ciphers", "");
+ filename = ServerInstance->Config->Paths.PrependConfig(tag->getString("keyfile", "key.pem"));
+ if ((!ctx.SetPrivateKey(filename)) || (!clictx.SetPrivateKey(filename)))
+ {
+ ERR_print_errors_cb(error_callback, this);
+ throw Exception("Can't read key file: " + lasterr);
+ }
- if (!ciphers.empty())
- {
- ERR_clear_error();
- if ((!SSL_CTX_set_cipher_list(ctx, ciphers.c_str())) || (!SSL_CTX_set_cipher_list(clictx, ciphers.c_str())))
+ // Load the CAs we trust
+ filename = ServerInstance->Config->Paths.PrependConfig(tag->getString("cafile", "ca.pem"));
+ if ((!ctx.SetCA(filename)) || (!clictx.SetCA(filename)))
{
- ServerInstance->Logs->Log("m_ssl_openssl",DEFAULT, "m_ssl_openssl.so: Can't set cipher list to %s.", ciphers.c_str());
ERR_print_errors_cb(error_callback, this);
+ ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Can't read CA list from %s. This is only a problem if you want to verify client certificates, otherwise it's safe to ignore this message. Error: %s", filename.c_str(), lasterr.c_str());
}
}
- /* Load our keys and certificates
- * NOTE: OpenSSL's error logging API sucks, don't blame us for this clusterfuck.
- */
- ERR_clear_error();
- if ((!SSL_CTX_use_certificate_chain_file(ctx, certfile.c_str())) || (!SSL_CTX_use_certificate_chain_file(clictx, certfile.c_str())))
- {
- ServerInstance->Logs->Log("m_ssl_openssl",DEFAULT, "m_ssl_openssl.so: Can't read certificate file %s. %s", certfile.c_str(), strerror(errno));
- ERR_print_errors_cb(error_callback, this);
- }
+ const std::string& GetName() const { return name; }
+ SSL* CreateServerSession() { return ctx.CreateServerSession(); }
+ SSL* CreateClientSession() { return clictx.CreateClientSession(); }
+ const EVP_MD* GetDigest() { return digest; }
+ bool AllowRenegotiation() const { return allowrenego; }
+ };
+}
- ERR_clear_error();
- if (((!SSL_CTX_use_PrivateKey_file(ctx, keyfile.c_str(), SSL_FILETYPE_PEM))) || (!SSL_CTX_use_PrivateKey_file(clictx, keyfile.c_str(), SSL_FILETYPE_PEM)))
- {
- ServerInstance->Logs->Log("m_ssl_openssl",DEFAULT, "m_ssl_openssl.so: Can't read key file %s. %s", keyfile.c_str(), strerror(errno));
- ERR_print_errors_cb(error_callback, this);
- }
+static int OnVerify(int preverify_ok, X509_STORE_CTX *ctx)
+{
+ /* XXX: This will allow self signed certificates.
+ * In the future if we want an option to not allow this,
+ * we can just return preverify_ok here, and openssl
+ * will boot off self-signed and invalid peer certs.
+ */
+ int ve = X509_STORE_CTX_get_error(ctx);
- /* Load the CAs we trust*/
- ERR_clear_error();
- if (((!SSL_CTX_load_verify_locations(ctx, cafile.c_str(), 0))) || (!SSL_CTX_load_verify_locations(clictx, cafile.c_str(), 0)))
- {
- ServerInstance->Logs->Log("m_ssl_openssl",DEFAULT, "m_ssl_openssl.so: Can't read CA list from %s. This is only a problem if you want to verify client certificates, otherwise it's safe to ignore this message. Error: %s", cafile.c_str(), strerror(errno));
- ERR_print_errors_cb(error_callback, this);
- }
+ SelfSigned = (ve == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT);
-#ifdef _WIN32
- BIO* dhpfile = BIO_new_file(dhfile.c_str(), "r");
-#else
- FILE* dhpfile = fopen(dhfile.c_str(), "r");
-#endif
- DH* ret;
+ return 1;
+}
- if (dhpfile == NULL)
- {
- ServerInstance->Logs->Log("m_ssl_openssl",DEFAULT, "m_ssl_openssl.so Couldn't open DH file %s: %s", dhfile.c_str(), strerror(errno));
- throw ModuleException("Couldn't open DH file " + dhfile + ": " + strerror(errno));
- }
- else
+class OpenSSLIOHook : public SSLIOHook
+{
+ private:
+ SSL* sess;
+ issl_status status;
+ bool data_to_write;
+ reference<OpenSSL::Profile> profile;
+
+ // Returns 1 if handshake succeeded, 0 if it is still in progress, -1 if it failed
+ int Handshake(StreamSocket* user)
+ {
+ ERR_clear_error();
+ int ret = SSL_do_handshake(sess);
+ if (ret < 0)
{
-#ifdef _WIN32
- ret = PEM_read_bio_DHparams(dhpfile, NULL, NULL, NULL);
- BIO_free(dhpfile);
-#else
- ret = PEM_read_DHparams(dhpfile, NULL, NULL, NULL);
-#endif
+ int err = SSL_get_error(sess, ret);
- ERR_clear_error();
- if ((SSL_CTX_set_tmp_dh(ctx, ret) < 0) || (SSL_CTX_set_tmp_dh(clictx, ret) < 0))
+ if (err == SSL_ERROR_WANT_READ)
{
- ServerInstance->Logs->Log("m_ssl_openssl",DEFAULT, "m_ssl_openssl.so: Couldn't set DH parameters %s. SSL errors follow:", dhfile.c_str());
- ERR_print_errors_cb(error_callback, this);
+ SocketEngine::ChangeEventMask(user, FD_WANT_POLL_READ | FD_WANT_NO_WRITE);
+ this->status = ISSL_HANDSHAKING;
+ return 0;
+ }
+ else if (err == SSL_ERROR_WANT_WRITE)
+ {
+ SocketEngine::ChangeEventMask(user, FD_WANT_NO_READ | FD_WANT_SINGLE_WRITE);
+ this->status = ISSL_HANDSHAKING;
+ return 0;
+ }
+ else
+ {
+ CloseSession();
+ return -1;
}
- DH_free(ret);
}
+ else if (ret > 0)
+ {
+ // Handshake complete.
+ VerifyCertificate();
-#ifndef _WIN32
- fclose(dhpfile);
-#endif
-
-#ifdef INSPIRCD_OPENSSL_ENABLE_ECDH
- SetupECDH(conf);
-#endif
- }
-
- void On005Numeric(std::string &output)
- {
- if (!sslports.empty())
- output.append(" SSL=" + sslports);
- }
+ status = ISSL_OPEN;
- ~ModuleSSLOpenSSL()
- {
- SSL_CTX_free(ctx);
- SSL_CTX_free(clictx);
- delete[] sessions;
- }
+ SocketEngine::ChangeEventMask(user, FD_WANT_POLL_READ | FD_WANT_NO_WRITE | FD_ADD_TRIAL_WRITE);
- void OnUserConnect(LocalUser* user)
- {
- if (user->eh.GetIOHook() == this)
+ return 1;
+ }
+ else if (ret == 0)
{
- if (sessions[user->eh.GetFd()].sess)
- {
- if (!sessions[user->eh.GetFd()].cert->fingerprint.empty())
- user->WriteServ("NOTICE %s :*** You are connected using SSL cipher \"%s\""
- " and your SSL fingerprint is %s", user->nick.c_str(), SSL_get_cipher(sessions[user->eh.GetFd()].sess), sessions[user->eh.GetFd()].cert->fingerprint.c_str());
- else
- user->WriteServ("NOTICE %s :*** You are connected using SSL cipher \"%s\"", user->nick.c_str(), SSL_get_cipher(sessions[user->eh.GetFd()].sess));
- }
+ CloseSession();
}
+ return -1;
}
- void OnCleanup(int target_type, void* item)
+ void CloseSession()
{
- if (target_type == TYPE_USER)
+ if (sess)
{
- LocalUser* user = IS_LOCAL((User*)item);
-
- if (user && user->eh.GetIOHook() == this)
- {
- // User is using SSL, they're a local user, and they're using one of *our* SSL ports.
- // Potentially there could be multiple SSL modules loaded at once on different ports.
- ServerInstance->Users->QuitUser(user, "SSL module unloading");
- }
+ SSL_shutdown(sess);
+ SSL_free(sess);
}
+ sess = NULL;
+ certificate = NULL;
+ status = ISSL_NONE;
}
- Version GetVersion()
+ void VerifyCertificate()
{
- return Version("Provides SSL support for clients", VF_VENDOR);
- }
+ X509* cert;
+ ssl_cert* certinfo = new ssl_cert;
+ this->certificate = certinfo;
+ unsigned int n;
+ unsigned char md[EVP_MAX_MD_SIZE];
- void OnRequest(Request& request)
- {
- if (strcmp("GET_SSL_CERT", request.id) == 0)
+ cert = SSL_get_peer_certificate(sess);
+
+ if (!cert)
{
- SocketCertificateRequest& req = static_cast<SocketCertificateRequest&>(request);
- int fd = req.sock->GetFd();
- issl_session* session = &sessions[fd];
+ certinfo->error = "Could not get peer certificate: "+std::string(get_error());
+ return;
+ }
+
+ certinfo->invalid = (SSL_get_verify_result(sess) != X509_V_OK);
- req.cert = session->cert;
+ if (!SelfSigned)
+ {
+ certinfo->unknownsigner = false;
+ certinfo->trusted = true;
}
- else if (!strcmp("GET_RAW_SSL_SESSION", request.id))
+ else
{
- SSLRawSessionRequest& req = static_cast<SSLRawSessionRequest&>(request);
- if ((req.fd >= 0) && (req.fd < ServerInstance->SE->GetMaxFds()))
- req.data = reinterpret_cast<void*>(sessions[req.fd].sess);
+ certinfo->unknownsigner = true;
+ certinfo->trusted = false;
}
- }
-
- void OnStreamSocketAccept(StreamSocket* user, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server)
- {
- int fd = user->GetFd();
- issl_session* session = &sessions[fd];
+ char buf[512];
+ X509_NAME_oneline(X509_get_subject_name(cert), buf, sizeof(buf));
+ certinfo->dn = buf;
+ // Make sure there are no chars in the string that we consider invalid
+ if (certinfo->dn.find_first_of("\r\n") != std::string::npos)
+ certinfo->dn.clear();
- session->sess = SSL_new(ctx);
- session->status = ISSL_NONE;
- session->outbound = false;
- session->data_to_write = false;
+ X509_NAME_oneline(X509_get_issuer_name(cert), buf, sizeof(buf));
+ certinfo->issuer = buf;
+ if (certinfo->issuer.find_first_of("\r\n") != std::string::npos)
+ certinfo->issuer.clear();
- if (session->sess == NULL)
- return;
+ if (!X509_digest(cert, profile->GetDigest(), md, &n))
+ {
+ certinfo->error = "Out of memory generating fingerprint";
+ }
+ else
+ {
+ certinfo->fingerprint = BinToHex(md, n);
+ }
- if (SSL_set_fd(session->sess, fd) == 0)
+ if ((ASN1_UTCTIME_cmp_time_t(X509_get_notAfter(cert), ServerInstance->Time()) == -1) || (ASN1_UTCTIME_cmp_time_t(X509_get_notBefore(cert), ServerInstance->Time()) == 0))
{
- ServerInstance->Logs->Log("m_ssl_openssl",DEBUG,"BUG: Can't set fd with SSL_set_fd: %d", fd);
- return;
+ certinfo->error = "Not activated, or expired certificate";
}
- Handshake(user, session);
+ X509_free(cert);
}
- void OnStreamSocketConnect(StreamSocket* user)
+#ifdef INSPIRCD_OPENSSL_ENABLE_RENEGO_DETECTION
+ void SSLInfoCallback(int where, int rc)
{
- int fd = user->GetFd();
- /* Are there any possibilities of an out of range fd? Hope not, but lets be paranoid */
- if ((fd < 0) || (fd > ServerInstance->SE->GetMaxFds() -1))
- return;
+ if ((where & SSL_CB_HANDSHAKE_START) && (status == ISSL_OPEN))
+ {
+ if (profile->AllowRenegotiation())
+ return;
- issl_session* session = &sessions[fd];
+ // The other side is trying to renegotiate, kill the connection and change status
+ // to ISSL_NONE so CheckRenego() closes the session
+ status = ISSL_NONE;
+ SocketEngine::Shutdown(SSL_get_fd(sess), 2);
+ }
+ }
- session->sess = SSL_new(clictx);
- session->status = ISSL_NONE;
- session->outbound = true;
- session->data_to_write = false;
+ bool CheckRenego(StreamSocket* sock)
+ {
+ if (status != ISSL_NONE)
+ return true;
- if (session->sess == NULL)
- return;
+ ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "Session %p killed, attempted to renegotiate", (void*)sess);
+ CloseSession();
+ sock->SetError("Renegotiation is not allowed");
+ return false;
+ }
+#endif
- if (SSL_set_fd(session->sess, fd) == 0)
+ // Returns 1 if application I/O should proceed, 0 if it must wait for the underlying protocol to progress, -1 on fatal error
+ int PrepareIO(StreamSocket* sock)
+ {
+ if (status == ISSL_OPEN)
+ return 1;
+ else if (status == ISSL_HANDSHAKING)
{
- ServerInstance->Logs->Log("m_ssl_openssl",DEBUG,"BUG: Can't set fd with SSL_set_fd: %d", fd);
- return;
+ // The handshake isn't finished, try to finish it
+ return Handshake(sock);
}
- Handshake(user, session);
+ CloseSession();
+ return -1;
}
- void OnStreamSocketClose(StreamSocket* user)
+ // Calls our private SSLInfoCallback()
+ friend void StaticSSLInfoCallback(const SSL* ssl, int where, int rc);
+
+ public:
+ OpenSSLIOHook(IOHookProvider* hookprov, StreamSocket* sock, SSL* session, const reference<OpenSSL::Profile>& sslprofile)
+ : SSLIOHook(hookprov)
+ , sess(session)
+ , status(ISSL_NONE)
+ , data_to_write(false)
+ , profile(sslprofile)
{
- int fd = user->GetFd();
- /* Are there any possibilities of an out of range fd? Hope not, but lets be paranoid */
- if ((fd < 0) || (fd > ServerInstance->SE->GetMaxFds() - 1))
+ if (sess == NULL)
return;
+ if (SSL_set_fd(sess, sock->GetFd()) == 0)
+ throw ModuleException("Can't set fd with SSL_set_fd: " + ConvToStr(sock->GetFd()));
- CloseSession(&sessions[fd]);
+ SSL_set_ex_data(sess, exdataindex, this);
+ sock->AddIOHook(this);
+ Handshake(sock);
}
- int OnStreamSocketRead(StreamSocket* user, std::string& recvq)
+ void OnStreamSocketClose(StreamSocket* user) CXX11_OVERRIDE
{
- int fd = user->GetFd();
- /* Are there any possibilities of an out of range fd? Hope not, but lets be paranoid */
- if ((fd < 0) || (fd > ServerInstance->SE->GetMaxFds() - 1))
- return -1;
-
- issl_session* session = &sessions[fd];
-
- if (!session->sess)
- {
- CloseSession(session);
- return -1;
- }
-
- if (session->status == ISSL_HANDSHAKING)
- {
- // The handshake isn't finished and it wants to read, try to finish it.
- if (!Handshake(user, session))
- {
- // Couldn't resume handshake.
- if (session->status == ISSL_NONE)
- return -1;
- return 0;
- }
- }
+ CloseSession();
+ }
- // If we resumed the handshake then session->status will be ISSL_OPEN
+ int OnStreamSocketRead(StreamSocket* user, std::string& recvq) CXX11_OVERRIDE
+ {
+ // Finish handshake if needed
+ int prepret = PrepareIO(user);
+ if (prepret <= 0)
+ return prepret;
- if (session->status == ISSL_OPEN)
+ // If we resumed the handshake then this->status will be ISSL_OPEN
{
ERR_clear_error();
char* buffer = ServerInstance->GetReadBuffer();
size_t bufsiz = ServerInstance->Config->NetBufferSize;
- int ret = SSL_read(session->sess, buffer, bufsiz);
+ int ret = SSL_read(sess, buffer, bufsiz);
#ifdef INSPIRCD_OPENSSL_ENABLE_RENEGO_DETECTION
- if (!CheckRenego(user, session))
+ if (!CheckRenego(user))
return -1;
#endif
if (ret > 0)
{
recvq.append(buffer, ret);
- if (session->data_to_write)
- ServerInstance->SE->ChangeEventMask(user, FD_WANT_POLL_READ | FD_WANT_SINGLE_WRITE);
+ if (data_to_write)
+ SocketEngine::ChangeEventMask(user, FD_WANT_POLL_READ | FD_WANT_SINGLE_WRITE);
return 1;
}
else if (ret == 0)
{
// Client closed connection.
- CloseSession(session);
+ CloseSession();
user->SetError("Connection closed");
return -1;
}
- else if (ret < 0)
+ else // if (ret < 0)
{
- int err = SSL_get_error(session->sess, ret);
+ int err = SSL_get_error(sess, ret);
if (err == SSL_ERROR_WANT_READ)
{
- ServerInstance->SE->ChangeEventMask(user, FD_WANT_POLL_READ);
+ SocketEngine::ChangeEventMask(user, FD_WANT_POLL_READ);
return 0;
}
else if (err == SSL_ERROR_WANT_WRITE)
{
- ServerInstance->SE->ChangeEventMask(user, FD_WANT_NO_READ | FD_WANT_SINGLE_WRITE);
+ SocketEngine::ChangeEventMask(user, FD_WANT_NO_READ | FD_WANT_SINGLE_WRITE);
return 0;
}
else
{
- CloseSession(session);
+ CloseSession();
return -1;
}
}
}
-
- return 0;
}
- int OnStreamSocketWrite(StreamSocket* user, std::string& buffer)
+ int OnStreamSocketWrite(StreamSocket* user, std::string& buffer) CXX11_OVERRIDE
{
- int fd = user->GetFd();
-
- issl_session* session = &sessions[fd];
-
- if (!session->sess)
- {
- CloseSession(session);
- return -1;
- }
+ // Finish handshake if needed
+ int prepret = PrepareIO(user);
+ if (prepret <= 0)
+ return prepret;
- session->data_to_write = true;
-
- if (session->status == ISSL_HANDSHAKING)
- {
- if (!Handshake(user, session))
- {
- // Couldn't resume handshake.
- if (session->status == ISSL_NONE)
- return -1;
- return 0;
- }
- }
+ data_to_write = true;
- if (session->status == ISSL_OPEN)
+ // Session is ready for transferring application data
{
ERR_clear_error();
- int ret = SSL_write(session->sess, buffer.data(), buffer.size());
+ int ret = SSL_write(sess, buffer.data(), buffer.size());
#ifdef INSPIRCD_OPENSSL_ENABLE_RENEGO_DETECTION
- if (!CheckRenego(user, session))
+ if (!CheckRenego(user))
return -1;
#endif
if (ret == (int)buffer.length())
{
- session->data_to_write = false;
- ServerInstance->SE->ChangeEventMask(user, FD_WANT_POLL_READ | FD_WANT_NO_WRITE);
+ data_to_write = false;
+ SocketEngine::ChangeEventMask(user, FD_WANT_POLL_READ | FD_WANT_NO_WRITE);
return 1;
}
else if (ret > 0)
{
- buffer = buffer.substr(ret);
- ServerInstance->SE->ChangeEventMask(user, FD_WANT_SINGLE_WRITE);
+ buffer.erase(0, ret);
+ SocketEngine::ChangeEventMask(user, FD_WANT_SINGLE_WRITE);
return 0;
}
else if (ret == 0)
{
- CloseSession(session);
+ CloseSession();
return -1;
}
- else if (ret < 0)
+ else // if (ret < 0)
{
- int err = SSL_get_error(session->sess, ret);
+ int err = SSL_get_error(sess, ret);
if (err == SSL_ERROR_WANT_WRITE)
{
- ServerInstance->SE->ChangeEventMask(user, FD_WANT_SINGLE_WRITE);
+ SocketEngine::ChangeEventMask(user, FD_WANT_SINGLE_WRITE);
return 0;
}
else if (err == SSL_ERROR_WANT_READ)
{
- ServerInstance->SE->ChangeEventMask(user, FD_WANT_POLL_READ);
+ SocketEngine::ChangeEventMask(user, FD_WANT_POLL_READ);
return 0;
}
else
{
- CloseSession(session);
+ CloseSession();
return -1;
}
}
}
- return 0;
}
- bool Handshake(StreamSocket* user, issl_session* session)
+ void TellCiphersAndFingerprint(LocalUser* user)
{
- int ret;
+ if (sess)
+ {
+ std::string text = "*** You are connected using SSL cipher '";
+ GetCiphersuite(text);
+ text += '\'';
+ const std::string& fingerprint = certificate->fingerprint;
+ if (!fingerprint.empty())
+ text += " and your SSL certificate fingerprint is " + fingerprint;
- ERR_clear_error();
- if (session->outbound)
- ret = SSL_connect(session->sess);
- else
- ret = SSL_accept(session->sess);
+ user->WriteNotice(text);
+ }
+ }
- if (ret < 0)
+ void GetCiphersuite(std::string& out) const
+ {
+ out.append(SSL_get_version(sess)).push_back('-');
+ out.append(SSL_get_cipher(sess));
+ }
++
++ bool IsHandshakeDone() const { return (status == ISSL_OPEN); }
+};
+
+static void StaticSSLInfoCallback(const SSL* ssl, int where, int rc)
+{
+#ifdef INSPIRCD_OPENSSL_ENABLE_RENEGO_DETECTION
+ OpenSSLIOHook* hook = static_cast<OpenSSLIOHook*>(SSL_get_ex_data(ssl, exdataindex));
+ hook->SSLInfoCallback(where, rc);
+#endif
+}
+
+class OpenSSLIOHookProvider : public refcountbase, public IOHookProvider
+{
+ reference<OpenSSL::Profile> profile;
+
+ public:
+ OpenSSLIOHookProvider(Module* mod, reference<OpenSSL::Profile>& prof)
+ : IOHookProvider(mod, "ssl/" + prof->GetName(), IOHookProvider::IOH_SSL)
+ , profile(prof)
+ {
+ ServerInstance->Modules->AddService(*this);
+ }
+
+ ~OpenSSLIOHookProvider()
+ {
+ ServerInstance->Modules->DelService(*this);
+ }
+
+ void OnAccept(StreamSocket* sock, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server) CXX11_OVERRIDE
+ {
+ new OpenSSLIOHook(this, sock, profile->CreateServerSession(), profile);
+ }
+
+ void OnConnect(StreamSocket* sock) CXX11_OVERRIDE
+ {
+ new OpenSSLIOHook(this, sock, profile->CreateClientSession(), profile);
+ }
+};
+
+class ModuleSSLOpenSSL : public Module
+{
+ typedef std::vector<reference<OpenSSLIOHookProvider> > ProfileList;
+
+ ProfileList profiles;
+
+ void ReadProfiles()
+ {
+ ProfileList newprofiles;
+ ConfigTagList tags = ServerInstance->Config->ConfTags("sslprofile");
+ if (tags.first == tags.second)
{
- int err = SSL_get_error(session->sess, ret);
+ // Create a default profile named "openssl"
+ const std::string defname = "openssl";
+ ConfigTag* tag = ServerInstance->Config->ConfValue(defname);
+ ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "No <sslprofile> tags found, using settings from the <openssl> tag");
- if (err == SSL_ERROR_WANT_READ)
+ try
{
- ServerInstance->SE->ChangeEventMask(user, FD_WANT_POLL_READ | FD_WANT_NO_WRITE);
- session->status = ISSL_HANDSHAKING;
- return true;
+ reference<OpenSSL::Profile> profile(new OpenSSL::Profile(defname, tag));
+ newprofiles.push_back(new OpenSSLIOHookProvider(this, profile));
}
- else if (err == SSL_ERROR_WANT_WRITE)
+ catch (OpenSSL::Exception& ex)
{
- ServerInstance->SE->ChangeEventMask(user, FD_WANT_NO_READ | FD_WANT_SINGLE_WRITE);
- session->status = ISSL_HANDSHAKING;
- return true;
+ throw ModuleException("Error while initializing the default SSL profile - " + ex.GetReason());
}
- else
- {
- CloseSession(session);
- }
-
- return false;
}
- else if (ret > 0)
+
+ for (ConfigIter i = tags.first; i != tags.second; ++i)
{
- // Handshake complete.
- VerifyCertificate(session, user);
+ ConfigTag* tag = i->second;
+ if (tag->getString("provider") != "openssl")
+ continue;
- session->status = ISSL_OPEN;
+ std::string name = tag->getString("name");
+ if (name.empty())
+ {
+ ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Ignoring <sslprofile> tag without name at " + tag->getTagLocation());
+ continue;
+ }
- ServerInstance->SE->ChangeEventMask(user, FD_WANT_POLL_READ | FD_WANT_NO_WRITE | FD_ADD_TRIAL_WRITE);
+ reference<OpenSSL::Profile> profile;
+ try
+ {
+ profile = new OpenSSL::Profile(name, tag);
+ }
+ catch (CoreException& ex)
+ {
+ throw ModuleException("Error while initializing SSL profile \"" + name + "\" at " + tag->getTagLocation() + " - " + ex.GetReason());
+ }
- return true;
+ newprofiles.push_back(new OpenSSLIOHookProvider(this, profile));
}
- else if (ret == 0)
- {
- CloseSession(session);
- }
- return false;
+
+ profiles.swap(newprofiles);
}
- void CloseSession(issl_session* session)
+ public:
+ ModuleSSLOpenSSL()
{
- if (session->sess)
- {
- SSL_shutdown(session->sess);
- SSL_free(session->sess);
- }
-
- session->sess = NULL;
- session->status = ISSL_NONE;
- session->cert = NULL;
+ // Initialize OpenSSL
+ SSL_library_init();
+ SSL_load_error_strings();
}
- void VerifyCertificate(issl_session* session, StreamSocket* user)
+ void init() CXX11_OVERRIDE
{
- if (!session->sess || !user)
- return;
-
- X509* cert;
- ssl_cert* certinfo = new ssl_cert;
- session->cert = certinfo;
- unsigned int n;
- unsigned char md[EVP_MAX_MD_SIZE];
- const EVP_MD *digest = use_sha ? EVP_sha1() : EVP_md5();
+ // Register application specific data
+ char exdatastr[] = "inspircd";
+ exdataindex = SSL_get_ex_new_index(0, exdatastr, NULL, NULL, NULL);
+ if (exdataindex < 0)
+ throw ModuleException("Failed to register application specific data");
- cert = SSL_get_peer_certificate((SSL*)session->sess);
+ ReadProfiles();
+ }
- if (!cert)
- {
- certinfo->error = "Could not get peer certificate: "+std::string(get_error());
+ void OnModuleRehash(User* user, const std::string ¶m) CXX11_OVERRIDE
+ {
+ if (param != "ssl")
return;
- }
- certinfo->invalid = (SSL_get_verify_result(session->sess) != X509_V_OK);
-
- if (!SelfSigned)
+ try
{
- certinfo->unknownsigner = false;
- certinfo->trusted = true;
+ ReadProfiles();
}
- else
+ catch (ModuleException& ex)
{
- certinfo->unknownsigner = true;
- certinfo->trusted = false;
+ ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, ex.GetReason() + " Not applying settings.");
}
+ }
- char buf[512];
- X509_NAME_oneline(X509_get_subject_name(cert), buf, sizeof(buf));
- certinfo->dn = buf;
- // Make sure there are no chars in the string that we consider invalid
- if (certinfo->dn.find_first_of("\r\n") != std::string::npos)
- certinfo->dn.clear();
-
- X509_NAME_oneline(X509_get_issuer_name(cert), buf, sizeof(buf));
- certinfo->issuer = buf;
- if (certinfo->issuer.find_first_of("\r\n") != std::string::npos)
- certinfo->issuer.clear();
+ void OnUserConnect(LocalUser* user) CXX11_OVERRIDE
+ {
+ IOHook* hook = user->eh.GetIOHook();
+ if (hook && hook->prov->creator == this)
+ static_cast<OpenSSLIOHook*>(hook)->TellCiphersAndFingerprint(user);
+ }
- if (!X509_digest(cert, digest, md, &n))
- {
- certinfo->error = "Out of memory generating fingerprint";
- }
- else
+ void OnCleanup(int target_type, void* item) CXX11_OVERRIDE
+ {
+ if (target_type == TYPE_USER)
{
- certinfo->fingerprint = irc::hex(md, n);
+ LocalUser* user = IS_LOCAL((User*)item);
+
+ if (user && user->eh.GetIOHook() && user->eh.GetIOHook()->prov->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");
+ }
}
+ }
- if ((ASN1_UTCTIME_cmp_time_t(X509_get_notAfter(cert), ServerInstance->Time()) == -1) || (ASN1_UTCTIME_cmp_time_t(X509_get_notBefore(cert), ServerInstance->Time()) == 0))
++ ModResult OnCheckReady(LocalUser* user) CXX11_OVERRIDE
++ {
++ if ((user->eh.GetIOHook()) && (user->eh.GetIOHook()->prov->creator == this))
+ {
- certinfo->error = "Not activated, or expired certificate";
++ OpenSSLIOHook* iohook = static_cast<OpenSSLIOHook*>(user->eh.GetIOHook());
++ if (!iohook->IsHandshakeDone())
++ return MOD_RES_DENY;
+ }
+
- X509_free(cert);
++ return MOD_RES_PASSTHRU;
+ }
-};
+
-static int error_callback(const char *str, size_t len, void *u)
-{
- ServerInstance->Logs->Log("m_ssl_openssl",DEFAULT, "SSL error: " + std::string(str, len - 1));
-
- //
- // XXX: Remove this line, it causes valgrind warnings...
- //
- // MD_update(&m, buf, j);
- //
- //
- // ... ONLY JOKING! :-)
- //
-
- return 0;
-}
+ Version GetVersion() CXX11_OVERRIDE
+ {
+ return Version("Provides SSL support for clients", VF_VENDOR);
+ }
+};
MODULE_INIT(ModuleSSLOpenSSL)
projects / user / henk / code / inspircd.git / commitdiff