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/*
* ngtcp2
*
* Copyright (c) 2020 ngtcp2 contributors
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "tls_client_session_wolfssl.h"
#include <cassert>
#include <iostream>
#include "tls_client_context_wolfssl.h"
#include "client_base.h"
#include "template.h"
#include "util.h"
using namespace std::literals;
TLSClientSession::TLSClientSession() {}
TLSClientSession::~TLSClientSession() {}
extern Config config;
namespace {
int wolfssl_session_ticket_cb(WOLFSSL *ssl, const unsigned char *ticket,
int ticketSz, void *cb_ctx) {
std::cerr << "session ticket calback invoked" << std::endl;
return 0;
}
} // namespace
int TLSClientSession::init(bool &early_data_enabled,
const TLSClientContext &tls_ctx,
const char *remote_addr, ClientBase *client,
uint32_t quic_version, AppProtocol app_proto) {
early_data_enabled = false;
auto ssl_ctx = tls_ctx.get_native_handle();
ssl_ = wolfSSL_new(ssl_ctx);
if (!ssl_) {
std::cerr << "wolfSSL_new: " << ERR_error_string(ERR_get_error(), nullptr)
<< std::endl;
return -1;
}
wolfSSL_set_app_data(ssl_, client->conn_ref());
wolfSSL_set_connect_state(ssl_);
wolfSSL_set_quic_use_legacy_codepoint(ssl_, (quic_version & 0xff000000) ==
0xff000000);
switch (app_proto) {
case AppProtocol::H3:
wolfSSL_set_alpn_protos(ssl_, H3_ALPN, str_size(H3_ALPN));
break;
case AppProtocol::HQ:
wolfSSL_set_alpn_protos(ssl_, HQ_ALPN, str_size(HQ_ALPN));
break;
}
if (!config.sni.empty()) {
wolfSSL_UseSNI(ssl_, WOLFSSL_SNI_HOST_NAME, config.sni.data(),
config.sni.length());
} else if (util::numeric_host(remote_addr)) {
// If remote host is numeric address, just send "localhost" as SNI
// for now.
wolfSSL_UseSNI(ssl_, WOLFSSL_SNI_HOST_NAME, "localhost",
sizeof("localhost") - 1);
} else {
wolfSSL_UseSNI(ssl_, WOLFSSL_SNI_HOST_NAME, remote_addr,
strlen(remote_addr));
}
if (config.session_file) {
#ifdef HAVE_SESSION_TICKET
auto f = wolfSSL_BIO_new_file(config.session_file, "r");
if (f == nullptr) {
std::cerr << "Could not open TLS session file " << config.session_file
<< std::endl;
} else {
char *name, *header;
unsigned char *data;
const unsigned char *pdata;
long datalen;
unsigned int ret;
WOLFSSL_SESSION *session;
if (wolfSSL_PEM_read_bio(f, &name, &header, &data, &datalen) != 1) {
std::cerr << "Could not read TLS session file " << config.session_file
<< std::endl;
} else {
if ("WOLFSSL SESSION PARAMETERS"sv != name) {
std::cerr << "TLS session file contains unexpected name: " << name
<< std::endl;
} else {
pdata = data;
session = wolfSSL_d2i_SSL_SESSION(nullptr, &pdata, datalen);
if (session == nullptr) {
std::cerr << "Could not parse TLS session from file "
<< config.session_file << std::endl;
} else {
ret = wolfSSL_set_session(ssl_, session);
if (ret != WOLFSSL_SUCCESS) {
std::cerr << "Could not install TLS session from file "
<< config.session_file << std::endl;
} else {
if (!config.disable_early_data &&
wolfSSL_SESSION_get_max_early_data(session)) {
early_data_enabled = true;
wolfSSL_set_quic_early_data_enabled(ssl_, 1);
}
}
wolfSSL_SESSION_free(session);
}
}
wolfSSL_OPENSSL_free(name);
wolfSSL_OPENSSL_free(header);
wolfSSL_OPENSSL_free(data);
}
wolfSSL_BIO_free(f);
}
wolfSSL_UseSessionTicket(ssl_);
wolfSSL_set_SessionTicket_cb(ssl_, wolfssl_session_ticket_cb, nullptr);
#else
std::cerr << "TLS session im-/export not enabled in wolfSSL" << std::endl;
#endif
}
return 0;
}
bool TLSClientSession::get_early_data_accepted() const {
// wolfSSL_get_early_data_status works after handshake completes.
#ifdef WOLFSSL_EARLY_DATA
return wolfSSL_get_early_data_status(ssl_) == SSL_EARLY_DATA_ACCEPTED;
#else
return 0;
#endif
}
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