#endif
#include "inspircd.h"
+#include "iohook.h"
#include <openssl/ssl.h>
#include <openssl/err.h>
-#include "ssl.h"
+#include "modules/ssl.h"
#ifdef _WIN32
# pragma comment(lib, "libcrypto.lib")
# 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 */
-
+/* $CompileFlags: pkgconfversion("openssl","0.9.7") pkgconfincludes("openssl","/openssl/ssl.h","") -Wno-pedantic */
+/* $LinkerFlags: rpath("pkg-config --libs openssl") pkgconflibs("openssl","/libssl.so","-lssl -lcrypto") */
enum issl_status { ISSL_NONE, ISSL_HANDSHAKING, ISSL_OPEN };
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);
-/** 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()
+ 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);
-
- SelfSigned = (ve == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT);
+ public:
+ Exception(const std::string& reason)
+ : ModuleException(reason) { }
+ };
- return 1;
-}
-
-class ModuleSSLOpenSSL : public Module
-{
- issl_session* sessions;
-
- SSL_CTX* ctx;
- SSL_CTX* clictx;
-
- std::string sslports;
- bool use_sha;
-
- ServiceProvider iohook;
- public:
-
- ModuleSSLOpenSSL() : iohook(this, "ssl/openssl", SERVICE_IOHOOK)
+ class DHParams
{
- sessions = new issl_session[ServerInstance->SE->GetMaxFds()];
-
- /* Global SSL library initialization*/
- SSL_library_init();
- SSL_load_error_strings();
+ DH* dh;
- /* Build our SSL contexts:
- * NOTE: OpenSSL makes us have two contexts, one for servers and one for clients. ICK.
- */
- ctx = SSL_CTX_new( SSLv23_server_method() );
- clictx = SSL_CTX_new( SSLv23_client_method() );
+ public:
+ DHParams(const std::string& filename)
+ {
+ FILE* dhpfile = fopen(filename.c_str(), "r");
+ if (dhpfile == NULL)
+ throw Exception("Couldn't open DH file " + filename + ": " + strerror(errno));
+
+ dh = PEM_read_DHparams(dhpfile, NULL, NULL, NULL);
+ fclose(dhpfile);
+ if (!dh)
+ throw Exception("Couldn't read DH params from file " + filename);
+ }
- 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);
+ ~DHParams()
+ {
+ DH_free(dh);
+ }
- 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* get()
+ {
+ return dh;
+ }
+ };
- void init()
+ class Context
{
- // 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);
- }
+ SSL_CTX* const ctx;
- void OnHookIO(StreamSocket* user, ListenSocket* lsb)
- {
- if (!user->GetIOHook() && lsb->bind_tag->getString("ssl") == "openssl")
+ public:
+ Context(SSL_CTX* context)
+ : ctx(context)
{
- /* Hook the user with our module */
- user->AddIOHook(this);
+ 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);
}
- }
- void OnRehash(User* user)
- {
- sslports.clear();
+ ~Context()
+ {
+ SSL_CTX_free(ctx);
+ }
- ConfigTag* Conf = ServerInstance->Config->ConfValue("openssl");
+ bool SetDH(DHParams& dh)
+ {
+ return (SSL_CTX_set_tmp_dh(ctx, dh.get()) >= 0);
+ }
- if (Conf->getBool("showports", true))
+ bool SetCiphers(const std::string& ciphers)
{
- sslports = Conf->getString("advertisedports");
- if (!sslports.empty())
- return;
+ return SSL_CTX_set_cipher_list(ctx, ciphers.c_str());
+ }
- for (size_t i = 0; i < ServerInstance->ports.size(); i++)
- {
- ListenSocket* port = ServerInstance->ports[i];
- if (port->bind_tag->getString("ssl") != "openssl")
- continue;
+ bool SetCerts(const std::string& filename)
+ {
+ return SSL_CTX_use_certificate_chain_file(ctx, filename.c_str());
+ }
- 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());
+ bool SetPrivateKey(const std::string& filename)
+ {
+ return SSL_CTX_use_PrivateKey_file(ctx, filename.c_str(), SSL_FILETYPE_PEM);
+ }
- 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;
- }
- }
+ bool SetCA(const std::string& filename)
+ {
+ return SSL_CTX_load_verify_locations(ctx, filename.c_str(), 0);
}
- }
- void OnModuleRehash(User* user, const std::string ¶m)
+ SSL* CreateSession()
+ {
+ return SSL_new(ctx);
+ }
+ };
+
+ class Profile : public refcountbase
{
- if (param != "ssl")
- return;
+ /** Name of this profile
+ */
+ const std::string name;
- std::string keyfile;
- std::string certfile;
- std::string cafile;
- std::string dhfile;
- OnRehash(user);
+ /** DH parameters in use
+ */
+ DHParams dh;
- ConfigTag* conf = ServerInstance->Config->ConfValue("openssl");
+ /** OpenSSL makes us have two contexts, one for servers and one for clients
+ */
+ Context ctx;
+ Context clictx;
- 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");
+ /** Digest to use when generating fingerprints
+ */
+ const EVP_MD* digest;
- std::string ciphers = conf->getString("ciphers", "");
+ /** Last error, set by error_callback()
+ */
+ std::string lasterr;
- if (!ciphers.empty())
+ static int error_callback(const char* str, size_t len, void* u)
{
- if ((!SSL_CTX_set_cipher_list(ctx, ciphers.c_str())) || (!SSL_CTX_set_cipher_list(clictx, ciphers.c_str())))
- {
- 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);
- }
+ Profile* profile = reinterpret_cast<Profile*>(u);
+ profile->lasterr = std::string(str, len - 1);
+ return 0;
}
- /* Load our keys and certificates
- * NOTE: OpenSSL's error logging API sucks, don't blame us for this clusterfuck.
- */
- if ((!SSL_CTX_use_certificate_chain_file(ctx, certfile.c_str())) || (!SSL_CTX_use_certificate_chain_file(clictx, certfile.c_str())))
+ 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()))
{
- 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);
- }
+ if ((!ctx.SetDH(dh)) || (!clictx.SetDH(dh)))
+ throw Exception("Couldn't set DH parameters");
- 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);
- }
+ std::string hash = tag->getString("hash", "md5");
+ digest = EVP_get_digestbyname(hash.c_str());
+ if (digest == NULL)
+ throw Exception("Unknown hash type " + hash);
- /* Load the CAs we trust*/
- 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);
- }
+ std::string ciphers = tag->getString("ciphers");
+ if (!ciphers.empty())
+ {
+ if ((!ctx.SetCiphers(ciphers)) || (!clictx.SetCiphers(ciphers)))
+ {
+ ERR_print_errors_cb(error_callback, this);
+ throw Exception("Can't set cipher list to \"" + ciphers + "\" " + lasterr);
+ }
+ }
- FILE* dhpfile = fopen(dhfile.c_str(), "r");
- DH* ret;
+ /* 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);
+ }
- 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
- {
- ret = PEM_read_DHparams(dhpfile, NULL, NULL, NULL);
- if ((SSL_CTX_set_tmp_dh(ctx, ret) < 0) || (SSL_CTX_set_tmp_dh(clictx, ret) < 0))
+ filename = ServerInstance->Config->Paths.PrependConfig(tag->getString("keyfile", "key.pem"));
+ if ((!ctx.SetPrivateKey(filename)) || (!clictx.SetPrivateKey(filename)))
{
- 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);
+ throw Exception("Can't read key file: " + lasterr);
+ }
+
+ // Load the CAs we trust
+ filename = ServerInstance->Config->Paths.PrependConfig(tag->getString("cafile", "ca.pem"));
+ if ((!ctx.SetCA(filename)) || (!clictx.SetCA(filename)))
+ {
+ 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());
}
}
- fclose(dhpfile);
- }
+ const std::string& GetName() const { return name; }
+ SSL* CreateServerSession() { return ctx.CreateSession(); }
+ SSL* CreateClientSession() { return clictx.CreateSession(); }
+ const EVP_MD* GetDigest() { return digest; }
+ };
+}
- void On005Numeric(std::string &output)
- {
- if (!sslports.empty())
- output.append(" SSL=" + sslports);
- }
+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);
- ~ModuleSSLOpenSSL()
- {
- SSL_CTX_free(ctx);
- SSL_CTX_free(clictx);
- delete[] sessions;
- }
+ SelfSigned = (ve == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT);
+
+ return 1;
+}
- void OnUserConnect(LocalUser* user)
+class OpenSSLIOHook : public SSLIOHook
+{
+ private:
+ SSL* sess;
+ issl_status status;
+ const bool outbound;
+ bool data_to_write;
+ reference<OpenSSL::Profile> profile;
+
+ bool Handshake(StreamSocket* user)
{
- if (user->eh.GetIOHook() == this)
+ int ret;
+
+ if (outbound)
+ ret = SSL_connect(sess);
+ else
+ ret = SSL_accept(sess);
+
+ if (ret < 0)
{
- if (sessions[user->eh.GetFd()].sess)
+ int err = SSL_get_error(sess, ret);
+
+ if (err == SSL_ERROR_WANT_READ)
{
- 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));
+ SocketEngine::ChangeEventMask(user, FD_WANT_POLL_READ | FD_WANT_NO_WRITE);
+ this->status = ISSL_HANDSHAKING;
+ return true;
+ }
+ else if (err == SSL_ERROR_WANT_WRITE)
+ {
+ SocketEngine::ChangeEventMask(user, FD_WANT_NO_READ | FD_WANT_SINGLE_WRITE);
+ this->status = ISSL_HANDSHAKING;
+ return true;
+ }
+ else
+ {
+ CloseSession();
}
- }
- }
- void OnCleanup(int target_type, void* item)
- {
- if (target_type == TYPE_USER)
+ return false;
+ }
+ else if (ret > 0)
{
- LocalUser* user = IS_LOCAL((User*)item);
+ // Handshake complete.
+ VerifyCertificate();
- 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");
- }
+ status = ISSL_OPEN;
+
+ SocketEngine::ChangeEventMask(user, FD_WANT_POLL_READ | FD_WANT_NO_WRITE | FD_ADD_TRIAL_WRITE);
+
+ return true;
+ }
+ else if (ret == 0)
+ {
+ CloseSession();
+ return true;
}
- }
- Version GetVersion()
- {
- return Version("Provides SSL support for clients", VF_VENDOR);
+ return true;
}
- void OnRequest(Request& request)
+ void CloseSession()
{
- if (strcmp("GET_SSL_CERT", request.id) == 0)
+ if (sess)
{
- SocketCertificateRequest& req = static_cast<SocketCertificateRequest&>(request);
- int fd = req.sock->GetFd();
- issl_session* session = &sessions[fd];
-
- req.cert = session->cert;
+ SSL_shutdown(sess);
+ SSL_free(sess);
}
+ sess = NULL;
+ certificate = NULL;
+ status = ISSL_NONE;
+ errno = EIO;
}
- void OnStreamSocketAccept(StreamSocket* user, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server)
+ void VerifyCertificate()
{
- int fd = user->GetFd();
-
- issl_session* session = &sessions[fd];
-
- session->sess = SSL_new(ctx);
- session->status = ISSL_NONE;
- session->outbound = false;
- session->cert = NULL;
+ X509* cert;
+ ssl_cert* certinfo = new ssl_cert;
+ this->certificate = certinfo;
+ unsigned int n;
+ unsigned char md[EVP_MAX_MD_SIZE];
- if (session->sess == NULL)
- return;
+ cert = SSL_get_peer_certificate(sess);
- if (SSL_set_fd(session->sess, fd) == 0)
+ if (!cert)
{
- ServerInstance->Logs->Log("m_ssl_openssl",DEBUG,"BUG: Can't set fd with SSL_set_fd: %d", fd);
+ certinfo->error = "Could not get peer certificate: "+std::string(get_error());
return;
}
- Handshake(user, session);
- }
-
- void OnStreamSocketConnect(StreamSocket* user)
- {
- 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;
+ certinfo->invalid = (SSL_get_verify_result(sess) != X509_V_OK);
- issl_session* session = &sessions[fd];
+ if (!SelfSigned)
+ {
+ certinfo->unknownsigner = false;
+ certinfo->trusted = true;
+ }
+ else
+ {
+ certinfo->unknownsigner = true;
+ certinfo->trusted = false;
+ }
- session->sess = SSL_new(clictx);
- session->status = ISSL_NONE;
- session->outbound = true;
+ certinfo->dn = X509_NAME_oneline(X509_get_subject_name(cert),0,0);
+ certinfo->issuer = X509_NAME_oneline(X509_get_issuer_name(cert),0,0);
- 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 OnStreamSocketClose(StreamSocket* user)
+ public:
+ OpenSSLIOHook(IOHookProvider* hookprov, StreamSocket* sock, bool is_outbound, SSL* session, const reference<OpenSSL::Profile>& sslprofile)
+ : SSLIOHook(hookprov)
+ , sess(session)
+ , status(ISSL_NONE)
+ , outbound(is_outbound)
+ , 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]);
+ 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];
+ CloseSession();
+ }
- if (!session->sess)
+ int OnStreamSocketRead(StreamSocket* user, std::string& recvq) CXX11_OVERRIDE
+ {
+ if (!sess)
{
- CloseSession(session);
+ CloseSession();
return -1;
}
- if (session->status == ISSL_HANDSHAKING)
+ if (status == ISSL_HANDSHAKING)
{
// The handshake isn't finished and it wants to read, try to finish it.
- if (!Handshake(user, session))
+ if (!Handshake(user))
{
// Couldn't resume handshake.
- if (session->status == ISSL_NONE)
+ if (status == ISSL_NONE)
return -1;
return 0;
}
}
- // If we resumed the handshake then session->status will be ISSL_OPEN
+ // If we resumed the handshake then this->status will be ISSL_OPEN
- if (session->status == ISSL_OPEN)
+ if (status == ISSL_OPEN)
{
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);
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)
{
- 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)
+ if (!sess)
{
- CloseSession(session);
+ CloseSession();
return -1;
}
- session->data_to_write = true;
+ data_to_write = true;
- if (session->status == ISSL_HANDSHAKING)
+ if (status == ISSL_HANDSHAKING)
{
- if (!Handshake(user, session))
+ if (!Handshake(user))
{
// Couldn't resume handshake.
- if (session->status == ISSL_NONE)
+ if (status == ISSL_NONE)
return -1;
return 0;
}
}
- if (session->status == ISSL_OPEN)
+ if (status == ISSL_OPEN)
{
- int ret = SSL_write(session->sess, buffer.data(), buffer.size());
+ int ret = SSL_write(sess, buffer.data(), buffer.size());
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);
+ SocketEngine::ChangeEventMask(user, FD_WANT_SINGLE_WRITE);
return 0;
}
else if (ret == 0)
{
- CloseSession(session);
+ CloseSession();
return -1;
}
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 '" + std::string(SSL_get_cipher(sess)) + "'";
+ const std::string& fingerprint = certificate->fingerprint;
+ if (!fingerprint.empty())
+ text += " and your SSL fingerprint is " + fingerprint;
- if (session->outbound)
- ret = SSL_connect(session->sess);
- else
- ret = SSL_accept(session->sess);
+ user->WriteNotice(text);
+ }
+ }
+};
- if (ret < 0)
+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, false, profile->CreateServerSession(), profile);
+ }
+
+ void OnConnect(StreamSocket* sock) CXX11_OVERRIDE
+ {
+ new OpenSSLIOHook(this, sock, true, profile->CreateClientSession(), profile);
+ }
+};
+
+class ModuleSSLOpenSSL : public Module
+{
+ typedef std::vector<reference<OpenSSLIOHookProvider> > ProfileList;
+
+ std::string sslports;
+ 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)
- {
- ServerInstance->SE->ChangeEventMask(user, FD_WANT_POLL_READ | FD_WANT_NO_WRITE);
- session->status = ISSL_HANDSHAKING;
- return true;
- }
- else if (err == SSL_ERROR_WANT_WRITE)
+ try
{
- ServerInstance->SE->ChangeEventMask(user, FD_WANT_NO_READ | FD_WANT_SINGLE_WRITE);
- session->status = ISSL_HANDSHAKING;
- return true;
+ reference<OpenSSL::Profile> profile(new OpenSSL::Profile(defname, tag));
+ newprofiles.push_back(new OpenSSLIOHookProvider(this, profile));
}
- else
+ catch (OpenSSL::Exception& ex)
{
- CloseSession(session);
+ throw ModuleException("Error while initializing the default SSL profile - " + ex.GetReason());
}
-
- 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;
- }
- else if (ret == 0)
- {
- CloseSession(session);
- return true;
+ newprofiles.push_back(new OpenSSLIOHookProvider(this, profile));
}
- return true;
+ 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;
- errno = EIO;
+ // 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;
+ ReadProfiles();
+ }
- 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();
+ void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE
+ {
+ sslports.clear();
- cert = SSL_get_peer_certificate((SSL*)session->sess);
+ ConfigTag* Conf = ServerInstance->Config->ConfValue("openssl");
- if (!cert)
+ if (Conf->getBool("showports", true))
{
- certinfo->error = "Could not get peer certificate: "+std::string(get_error());
- return;
- }
+ sslports = Conf->getString("advertisedports");
+ if (!sslports.empty())
+ return;
- certinfo->invalid = (SSL_get_verify_result(session->sess) != X509_V_OK);
+ for (size_t i = 0; i < ServerInstance->ports.size(); i++)
+ {
+ ListenSocket* port = ServerInstance->ports[i];
+ if (port->bind_tag->getString("ssl") != "openssl")
+ continue;
- if (SelfSigned)
- {
- certinfo->unknownsigner = false;
- certinfo->trusted = true;
- }
- else
- {
- certinfo->unknownsigner = true;
- certinfo->trusted = false;
+ const std::string& portid = port->bind_desc;
+ ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "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;
+ }
+ }
}
+ }
- certinfo->dn = X509_NAME_oneline(X509_get_subject_name(cert),0,0);
- certinfo->issuer = X509_NAME_oneline(X509_get_issuer_name(cert),0,0);
+ void OnModuleRehash(User* user, const std::string ¶m) CXX11_OVERRIDE
+ {
+ if (param != "ssl")
+ return;
- if (!X509_digest(cert, digest, md, &n))
+ try
{
- certinfo->error = "Out of memory generating fingerprint";
+ ReadProfiles();
}
- else
+ catch (ModuleException& ex)
{
- certinfo->fingerprint = irc::hex(md, n);
+ ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, ex.GetReason() + " Not applying settings.");
}
+ }
- 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))
+ void On005Numeric(std::map<std::string, std::string>& tokens) CXX11_OVERRIDE
+ {
+ if (!sslports.empty())
+ tokens["SSL"] = sslports;
+ }
+
+ void OnUserConnect(LocalUser* user) CXX11_OVERRIDE
+ {
+ IOHook* hook = user->eh.GetIOHook();
+ if (hook && hook->prov->creator == this)
+ static_cast<OpenSSLIOHook*>(hook)->TellCiphersAndFingerprint(user);
+ }
+
+ void OnCleanup(int target_type, void* item) CXX11_OVERRIDE
+ {
+ if (target_type == TYPE_USER)
{
- certinfo->error = "Not activated, or expired certificate";
+ 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");
+ }
}
+ }
- X509_free(cert);
+ Version GetVersion() CXX11_OVERRIDE
+ {
+ return Version("Provides SSL support for clients", VF_VENDOR);
}
};
-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;
-}
-
MODULE_INIT(ModuleSSLOpenSSL)
projects / user / henk / code / inspircd.git / blobdiff