int mowgli_vio_openssl_default_connect(mowgli_vio_t *vio, mowgli_vio_sockaddr_t *addr)
{
const int fd = mowgli_vio_getfd(vio);
return_val_if_fail(fd != -1, -255);
mowgli_ssl_connection_t *connection = vio->privdata;
vio->error.op = MOWGLI_VIO_ERR_OP_CONNECT;
if (connect(fd, (struct sockaddr *)&addr->addr, addr->addrlen) < 0)
{
if (!mowgli_eventloop_ignore_errno(errno))
return mowgli_vio_err_errcode(vio, strerror, errno);
else
{
mowgli_vio_setflag(vio, MOWGLI_VIO_FLAGS_ISCONNECTING, true);
mowgli_vio_setflag(vio, MOWGLI_VIO_FLAGS_ISSSLCONNECTING, true);
vio->error.op = MOWGLI_VIO_ERR_OP_NONE;
return 0;
}
}
memcpy(&vio->addr.addr, &addr->addr, addr->addrlen);
vio->addr.addrlen = addr->addrlen;
mowgli_vio_setflag(vio, MOWGLI_VIO_FLAGS_ISCLIENT, true);
mowgli_vio_setflag(vio, MOWGLI_VIO_FLAGS_ISSERVER, false);
/* Non-blocking socket, begin handshake */
mowgli_vio_setflag(vio, MOWGLI_VIO_FLAGS_ISCONNECTING, false);
return mowgli_vio_openssl_client_handshake(vio, connection);
}
int
mowgli_vio_openssl_default_accept(mowgli_vio_t *vio, mowgli_vio_t *newvio)
{
const int fd = mowgli_vio_getfd(vio);
int afd;
int ret;
return_val_if_fail(fd != -1, -255);
mowgli_ssl_connection_t *connection = vio->privdata;
mowgli_ssl_connection_t *newconnection;
vio->error.op = MOWGLI_VIO_ERR_OP_ACCEPT;
if (!newvio)
{
const char errstr[] = "accept not called with valid new VIO object";
vio->error.type = MOWGLI_VIO_ERR_API;
mowgli_strlcpy(vio->error.string, errstr, sizeof(errstr));
return mowgli_vio_error(vio);
}
if ((afd = accept(fd, (struct sockaddr *) &newvio->addr.addr, &(newvio->addr.addrlen))) < 0)
{
if (!mowgli_eventloop_ignore_errno(errno))
return mowgli_vio_err_errcode(vio, strerror, errno);
else
return 0;
}
newvio->io.fd = afd;
mowgli_vio_openssl_setssl(newvio, &connection->settings, vio->ops);
newconnection = newvio->privdata;
newconnection->ssl_context = connection->ssl_context;
newconnection->ssl_handle = SSL_new(newconnection->ssl_context);
if (!SSL_set_fd(newconnection->ssl_handle, afd))
return mowgli_vio_err_sslerrcode(newvio, ERR_get_error());
if ((ret = SSL_accept(newconnection->ssl_handle)) != 1)
{
unsigned long err;
switch (SSL_get_error(newconnection->ssl_handle, ret))
{
case SSL_ERROR_WANT_READ:
mowgli_vio_setflag(vio, MOWGLI_VIO_FLAGS_NEEDREAD, true);
MOWGLI_VIO_SETREAD(vio)
return 0;
case SSL_ERROR_WANT_WRITE:
mowgli_vio_setflag(vio, MOWGLI_VIO_FLAGS_NEEDWRITE, true);
MOWGLI_VIO_SETWRITE(vio)
return 0;
case SSL_ERROR_ZERO_RETURN:
return 0;
case SSL_ERROR_SYSCALL:
return mowgli_vio_err_errcode(newvio, strerror, errno);
default:
err = ERR_get_error();
break;
}
if (err > 0)
{
errno = EIO;
return mowgli_vio_err_errcode(vio, strerror, errno);
}
return -1;
}
int
mowgli_vio_openssl_default_listen(mowgli_vio_t *vio, int backlog)
{
return_val_if_fail(vio, -255);
mowgli_ssl_connection_t *connection = vio->privdata;
const SSL_METHOD *method;
const int fd = mowgli_vio_getfd(vio);
vio->error.op = MOWGLI_VIO_ERR_OP_LISTEN;
switch (connection->settings.ssl_version)
{
case MOWGLI_VIO_SSLFLAGS_SSLV2:
method = SSLv23_server_method();
break;
case MOWGLI_VIO_SSLFLAGS_SSLV3:
method = SSLv3_server_method();
break;
case MOWGLI_VIO_SSLFLAGS_TLSV10:
case MOWGLI_VIO_SSLFLAGS_TLSV11:
case MOWGLI_VIO_SSLFLAGS_TLSV12:
method = TLSv1_server_method();
break;
default:
/* Compat method */
method = SSLv23_server_method();
}
connection->ssl_context = SSL_CTX_new((SSL_METHOD *) method);
if (connection->ssl_context == NULL)
return mowgli_vio_err_sslerrcode(vio, ERR_get_error());
connection->ssl_handle = SSL_new(connection->ssl_context);
if (connection->ssl_handle == NULL)
return mowgli_vio_err_sslerrcode(vio, ERR_get_error());
SSL_set_accept_state(connection->ssl_handle);
SSL_CTX_set_options(connection->ssl_context, SSL_OP_SINGLE_DH_USE);
if (connection->settings.password_func)
{
SSL_CTX_set_default_passwd_cb(connection->ssl_context, connection->settings.password_func);
SSL_CTX_set_default_passwd_cb_userdata(connection->ssl_context, vio->userdata);
}
if (SSL_CTX_use_certificate_file(connection->ssl_context, connection->settings.cert_path, SSL_FILETYPE_PEM) != 1)
return mowgli_vio_err_sslerrcode(vio, ERR_get_error());
if (SSL_CTX_use_PrivateKey_file(connection->ssl_context, connection->settings.privatekey_path, SSL_FILETYPE_PEM) != 1)
return mowgli_vio_err_sslerrcode(vio, ERR_get_error());
if (listen(fd, backlog) != 0)
return mowgli_vio_err_errcode(vio, strerror, errno);
if (!SSL_set_fd(connection->ssl_handle, fd))
return mowgli_vio_err_sslerrcode(vio, ERR_get_error());
mowgli_vio_setflag(vio, MOWGLI_VIO_FLAGS_ISSERVER, true);
vio->error.op = MOWGLI_VIO_ERR_OP_NONE;
return 0;
}
int
mowgli_vio_openssl_default_listen(mowgli_vio_t *vio, int backlog)
{
return_val_if_fail(vio, -255);
mowgli_ssl_connection_t *connection = vio->privdata;
const int fd = mowgli_vio_getfd(vio);
vio->error.op = MOWGLI_VIO_ERR_OP_LISTEN;
#ifndef MOWGLI_HAVE_OPENSSL_TLS_METHOD_API
connection->ssl_context = SSL_CTX_new(SSLv23_server_method());
#else
connection->ssl_context = SSL_CTX_new(TLS_server_method());
#endif
if (connection->ssl_context == NULL)
return mowgli_vio_err_sslerrcode(vio, ERR_get_error());
#ifndef MOWGLI_HAVE_OPENSSL_TLS_METHOD_API
# ifdef SSL_OP_NO_SSLv2
SSL_CTX_set_options(connection->ssl_context, SSL_OP_NO_SSLv2);
# endif
# ifdef SSL_OP_NO_SSLv3
SSL_CTX_set_options(connection->ssl_context, SSL_OP_NO_SSLv3);
# endif
#endif
connection->ssl_handle = SSL_new(connection->ssl_context);
if (connection->ssl_handle == NULL)
return mowgli_vio_err_sslerrcode(vio, ERR_get_error());
SSL_set_accept_state(connection->ssl_handle);
SSL_CTX_set_options(connection->ssl_context, SSL_OP_SINGLE_DH_USE);
#ifdef OPENSSL_EC_AVAILABLE
# ifdef MOWGLI_HAVE_OPENSSL_ECDH_AUTO
SSL_CTX_set_ecdh_auto(connection->ssl_context, 1);
# else
EC_KEY *ec_key_p256 = EC_KEY_new_by_curve_name(NID_X9_62_prime256v1);
if (ec_key_p256 != NULL)
{
SSL_CTX_set_tmp_ecdh(connection->ssl_context, ec_key_p256);
EC_KEY_free(ec_key_p256);
ec_key_p256 = NULL;
}
# endif
# ifdef SSL_OP_SINGLE_ECDH_USE
SSL_CTX_set_options(connection->ssl_context, SSL_OP_SINGLE_ECDH_USE);
# endif
#endif
if (connection->settings.password_func)
{
SSL_CTX_set_default_passwd_cb(connection->ssl_context, connection->settings.password_func);
SSL_CTX_set_default_passwd_cb_userdata(connection->ssl_context, vio->userdata);
}
if (SSL_CTX_use_certificate_file(connection->ssl_context, connection->settings.cert_path, SSL_FILETYPE_PEM) != 1)
return mowgli_vio_err_sslerrcode(vio, ERR_get_error());
if (SSL_CTX_use_PrivateKey_file(connection->ssl_context, connection->settings.privatekey_path, SSL_FILETYPE_PEM) != 1)
return mowgli_vio_err_sslerrcode(vio, ERR_get_error());
if (listen(fd, backlog) != 0)
return mowgli_vio_err_errcode(vio, strerror, errno);
if (!SSL_set_fd(connection->ssl_handle, fd))
return mowgli_vio_err_sslerrcode(vio, ERR_get_error());
mowgli_vio_setflag(vio, MOWGLI_VIO_FLAGS_ISSERVER, true);
vio->error.op = MOWGLI_VIO_ERR_OP_NONE;
return 0;
}
