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/*
* ngtcp2
*
* Copyright (c) 2022 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_picotls.h"
#include <iostream>
#include <memory>
#include <ngtcp2/ngtcp2_crypto_picotls.h>
#include <openssl/bio.h>
#include <openssl/pem.h>
#include <picotls.h>
#include "tls_client_context_picotls.h"
#include "client_base.h"
#include "template.h"
#include "util.h"
using namespace std::literals;
extern Config config;
TLSClientSession::TLSClientSession() {}
TLSClientSession::~TLSClientSession() {
auto &hsprops = cptls_.handshake_properties;
delete[] hsprops.client.session_ticket.base;
}
namespace {
auto negotiated_protocols = std::array<ptls_iovec_t, 1>{{
{
.base = const_cast<uint8_t *>(&H3_ALPN_V1[1]),
.len = H3_ALPN_V1[0],
},
}};
} // namespace
int TLSClientSession::init(bool &early_data_enabled, TLSClientContext &tls_ctx,
const char *remote_addr, ClientBase *client,
uint32_t quic_version, AppProtocol app_proto) {
cptls_.ptls = ptls_client_new(tls_ctx.get_native_handle());
if (!cptls_.ptls) {
std::cerr << "ptls_client_new failed" << std::endl;
return -1;
}
*ptls_get_data_ptr(cptls_.ptls) = client->conn_ref();
auto conn = client->conn();
auto &hsprops = cptls_.handshake_properties;
hsprops.additional_extensions = new ptls_raw_extension_t[2]{
{
.type = UINT16_MAX,
},
{
.type = UINT16_MAX,
},
};
if (ngtcp2_crypto_picotls_configure_client_session(&cptls_, conn) != 0) {
std::cerr << "ngtcp2_crypto_picotls_configure_client_session failed"
<< std::endl;
return -1;
}
hsprops.client.negotiated_protocols.list = negotiated_protocols.data();
hsprops.client.negotiated_protocols.count = negotiated_protocols.size();
if (util::numeric_host(remote_addr)) {
// If remote host is numeric address, just send "localhost" as SNI
// for now.
ptls_set_server_name(cptls_.ptls, "localhost", strlen("localhost"));
} else {
ptls_set_server_name(cptls_.ptls, remote_addr, strlen(remote_addr));
}
if (config.session_file) {
auto f = BIO_new_file(config.session_file, "r");
if (f == nullptr) {
std::cerr << "Could not read TLS session file " << config.session_file
<< std::endl;
} else {
auto f_d = defer(BIO_free, f);
char *name, *header;
unsigned char *data;
long datalen;
if (PEM_read_bio(f, &name, &header, &data, &datalen) != 1) {
std::cerr << "Could not read TLS session file " << config.session_file
<< std::endl;
} else {
if ("PICOTLS SESSION PARAMETERS"sv != name) {
std::cerr << "TLS session file contains unexpected name: " << name
<< std::endl;
} else {
hsprops.client.session_ticket.base = new uint8_t[datalen];
hsprops.client.session_ticket.len = datalen;
memcpy(hsprops.client.session_ticket.base, data, datalen);
if (!config.disable_early_data) {
// No easy way to check max_early_data from ticket. We
// need to run ptls_handle_message.
early_data_enabled = true;
}
}
OPENSSL_free(name);
OPENSSL_free(header);
OPENSSL_free(data);
}
}
}
return 0;
}
bool TLSClientSession::get_early_data_accepted() const {
return cptls_.handshake_properties.client.early_data_acceptance ==
PTLS_EARLY_DATA_ACCEPTED;
}
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