nexmon – Rev 1
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/* Copyright (c) 2014, Google Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
#include <openssl/base.h>
#include <stdio.h>
#include <openssl/err.h>
#include <openssl/pem.h>
#include <openssl/ssl.h>
#include "../crypto/test/scoped_types.h"
#include "../ssl/test/scoped_types.h"
#include "internal.h"
#include "transport_common.h"
static const struct argument kArguments[] = {
{
"-connect", kRequiredArgument,
"The hostname and port of the server to connect to, e.g. foo.com:443",
},
{
"-cipher", kOptionalArgument,
"An OpenSSL-style cipher suite string that configures the offered ciphers",
},
{
"-max-version", kOptionalArgument,
"The maximum acceptable protocol version",
},
{
"-min-version", kOptionalArgument,
"The minimum acceptable protocol version",
},
{
"-server-name", kOptionalArgument,
"The server name to advertise",
},
{
"-select-next-proto", kOptionalArgument,
"An NPN protocol to select if the server supports NPN",
},
{
"-alpn-protos", kOptionalArgument,
"A comma-separated list of ALPN protocols to advertise",
},
{
"-fallback-scsv", kBooleanArgument,
"Enable FALLBACK_SCSV",
},
{
"-ocsp-stapling", kBooleanArgument,
"Advertise support for OCSP stabling",
},
{
"-signed-certificate-timestamps", kBooleanArgument,
"Advertise support for signed certificate timestamps",
},
{
"-channel-id-key", kOptionalArgument,
"The key to use for signing a channel ID",
},
{
"-false-start", kBooleanArgument,
"Enable False Start",
},
{ "-session-in", kOptionalArgument,
"A file containing a session to resume.",
},
{ "-session-out", kOptionalArgument,
"A file to write the negotiated session to.",
},
{
"-key", kOptionalArgument,
"Private-key file to use (default is no client certificate)",
},
{
"", kOptionalArgument, "",
},
};
static ScopedEVP_PKEY LoadPrivateKey(const std::string &file) {
ScopedBIO bio(BIO_new(BIO_s_file()));
if (!bio || !BIO_read_filename(bio.get(), file.c_str())) {
return nullptr;
}
ScopedEVP_PKEY pkey(PEM_read_bio_PrivateKey(bio.get(), nullptr, nullptr,
nullptr));
return pkey;
}
static bool VersionFromString(uint16_t *out_version,
const std::string& version) {
if (version == "ssl3") {
*out_version = SSL3_VERSION;
return true;
} else if (version == "tls1" || version == "tls1.0") {
*out_version = TLS1_VERSION;
return true;
} else if (version == "tls1.1") {
*out_version = TLS1_1_VERSION;
return true;
} else if (version == "tls1.2") {
*out_version = TLS1_2_VERSION;
return true;
}
return false;
}
static int NextProtoSelectCallback(SSL* ssl, uint8_t** out, uint8_t* outlen,
const uint8_t* in, unsigned inlen, void* arg) {
*out = reinterpret_cast<uint8_t *>(arg);
*outlen = strlen(reinterpret_cast<const char *>(arg));
return SSL_TLSEXT_ERR_OK;
}
static FILE *g_keylog_file = nullptr;
static void KeyLogCallback(const SSL *ssl, const char *line) {
fprintf(g_keylog_file, "%s\n", line);
fflush(g_keylog_file);
}
bool Client(const std::vector<std::string> &args) {
if (!InitSocketLibrary()) {
return false;
}
std::map<std::string, std::string> args_map;
if (!ParseKeyValueArguments(&args_map, args, kArguments)) {
PrintUsage(kArguments);
return false;
}
ScopedSSL_CTX ctx(SSL_CTX_new(SSLv23_client_method()));
const char *keylog_file = getenv("SSLKEYLOGFILE");
if (keylog_file) {
g_keylog_file = fopen(keylog_file, "a");
if (g_keylog_file == nullptr) {
perror("fopen");
return false;
}
SSL_CTX_set_keylog_callback(ctx.get(), KeyLogCallback);
}
if (args_map.count("-cipher") != 0 &&
!SSL_CTX_set_cipher_list(ctx.get(), args_map["-cipher"].c_str())) {
fprintf(stderr, "Failed setting cipher list\n");
return false;
}
if (args_map.count("-max-version") != 0) {
uint16_t version;
if (!VersionFromString(&version, args_map["-max-version"])) {
fprintf(stderr, "Unknown protocol version: '%s'\n",
args_map["-max-version"].c_str());
return false;
}
SSL_CTX_set_max_version(ctx.get(), version);
}
if (args_map.count("-min-version") != 0) {
uint16_t version;
if (!VersionFromString(&version, args_map["-min-version"])) {
fprintf(stderr, "Unknown protocol version: '%s'\n",
args_map["-min-version"].c_str());
return false;
}
SSL_CTX_set_min_version(ctx.get(), version);
}
if (args_map.count("-select-next-proto") != 0) {
const std::string &proto = args_map["-select-next-proto"];
if (proto.size() > 255) {
fprintf(stderr, "Bad NPN protocol: '%s'\n", proto.c_str());
return false;
}
// |SSL_CTX_set_next_proto_select_cb| is not const-correct.
SSL_CTX_set_next_proto_select_cb(ctx.get(), NextProtoSelectCallback,
const_cast<char *>(proto.c_str()));
}
if (args_map.count("-alpn-protos") != 0) {
const std::string &alpn_protos = args_map["-alpn-protos"];
std::vector<uint8_t> wire;
size_t i = 0;
while (i <= alpn_protos.size()) {
size_t j = alpn_protos.find(',', i);
if (j == std::string::npos) {
j = alpn_protos.size();
}
size_t len = j - i;
if (len > 255) {
fprintf(stderr, "Invalid ALPN protocols: '%s'\n", alpn_protos.c_str());
return false;
}
wire.push_back(static_cast<uint8_t>(len));
wire.resize(wire.size() + len);
memcpy(wire.data() + wire.size() - len, alpn_protos.data() + i, len);
i = j + 1;
}
if (SSL_CTX_set_alpn_protos(ctx.get(), wire.data(), wire.size()) != 0) {
return false;
}
}
if (args_map.count("-fallback-scsv") != 0) {
SSL_CTX_set_mode(ctx.get(), SSL_MODE_SEND_FALLBACK_SCSV);
}
if (args_map.count("-ocsp-stapling") != 0) {
SSL_CTX_enable_ocsp_stapling(ctx.get());
}
if (args_map.count("-signed-certificate-timestamps") != 0) {
SSL_CTX_enable_signed_cert_timestamps(ctx.get());
}
if (args_map.count("-channel-id-key") != 0) {
ScopedEVP_PKEY pkey = LoadPrivateKey(args_map["-channel-id-key"]);
if (!pkey || !SSL_CTX_set1_tls_channel_id(ctx.get(), pkey.get())) {
return false;
}
}
if (args_map.count("-false-start") != 0) {
SSL_CTX_set_mode(ctx.get(), SSL_MODE_ENABLE_FALSE_START);
}
if (args_map.count("-key") != 0) {
const std::string &key = args_map["-key"];
if (!SSL_CTX_use_PrivateKey_file(ctx.get(), key.c_str(), SSL_FILETYPE_PEM)) {
fprintf(stderr, "Failed to load private key: %s\n", key.c_str());
return false;
}
if (!SSL_CTX_use_certificate_chain_file(ctx.get(), key.c_str())) {
fprintf(stderr, "Failed to load cert chain: %s\n", key.c_str());
return false;
}
}
int sock = -1;
if (!Connect(&sock, args_map["-connect"])) {
return false;
}
ScopedBIO bio(BIO_new_socket(sock, BIO_CLOSE));
ScopedSSL ssl(SSL_new(ctx.get()));
if (args_map.count("-server-name") != 0) {
SSL_set_tlsext_host_name(ssl.get(), args_map["-server-name"].c_str());
}
if (args_map.count("-session-in") != 0) {
ScopedBIO in(BIO_new_file(args_map["-session-in"].c_str(), "rb"));
if (!in) {
fprintf(stderr, "Error reading session\n");
ERR_print_errors_cb(PrintErrorCallback, stderr);
return false;
}
ScopedSSL_SESSION session(PEM_read_bio_SSL_SESSION(in.get(), nullptr,
nullptr, nullptr));
if (!session) {
fprintf(stderr, "Error reading session\n");
ERR_print_errors_cb(PrintErrorCallback, stderr);
return false;
}
SSL_set_session(ssl.get(), session.get());
}
SSL_set_bio(ssl.get(), bio.get(), bio.get());
bio.release();
int ret = SSL_connect(ssl.get());
if (ret != 1) {
int ssl_err = SSL_get_error(ssl.get(), ret);
fprintf(stderr, "Error while connecting: %d\n", ssl_err);
ERR_print_errors_cb(PrintErrorCallback, stderr);
return false;
}
fprintf(stderr, "Connected.\n");
PrintConnectionInfo(ssl.get());
if (args_map.count("-session-out") != 0) {
ScopedBIO out(BIO_new_file(args_map["-session-out"].c_str(), "wb"));
if (!out ||
!PEM_write_bio_SSL_SESSION(out.get(), SSL_get0_session(ssl.get()))) {
fprintf(stderr, "Error while saving session:\n");
ERR_print_errors_cb(PrintErrorCallback, stderr);
return false;
}
}
bool ok = TransferData(ssl.get(), sock);
return ok;
}