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/**
* Copyright (C) 2018-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#include "mongo/platform/basic.h"
#include "mongo/util/net/ssl_options.h"
#include <boost/filesystem/operations.hpp>
#include "mongo/base/status.h"
#include "mongo/config.h"
#include "mongo/db/server_options.h"
#include "mongo/util/hex.h"
#include "mongo/util/options_parser/startup_options.h"
#include "mongo/util/text.h"
#if MONGO_CONFIG_SSL_PROVIDER == MONGO_CONFIG_SSL_PROVIDER_OPENSSL
#include <openssl/ssl.h>
#endif // #ifdef MONGO_CONFIG_SSL
namespace mongo {
namespace moe = mongo::optionenvironment;
using std::string;
SSLParams sslGlobalParams;
namespace {
std::vector<uint8_t> hexToVector(StringData hex) {
try {
std::string data = hexblob::decode(hex);
return std::vector<uint8_t>(data.begin(), data.end());
} catch (const ExceptionFor<ErrorCodes::FailedToParse>&) {
if (std::any_of(hex.begin(), hex.end(), [](unsigned char c) { return !isxdigit(c); })) {
uasserted(ErrorCodes::BadValue, "Not a valid hex string");
}
if (hex.size() % 2) {
uasserted(ErrorCodes::BadValue, "Not an even number of hexits");
}
throw;
}
}
} // namespace
Status storeSSLDisabledProtocols(const std::string& disabledProtocols,
SSLDisabledProtocolsMode mode /* =kStandardFormat */) {
if (disabledProtocols == "none") {
// Allow overriding the default behavior below of implicitly disabling TLS 1.0.
return Status::OK();
}
// The disabledProtocols field is composed of a comma separated list of protocols to
// disable. First, tokenize the field.
const auto tokens = StringSplitter::split(disabledProtocols, ",");
// All universally accepted tokens, and their corresponding enum representation.
const std::map<std::string, SSLParams::Protocols> validConfigs{
{"TLS1_0", SSLParams::Protocols::TLS1_0},
{"TLS1_1", SSLParams::Protocols::TLS1_1},
{"TLS1_2", SSLParams::Protocols::TLS1_2},
{"TLS1_3", SSLParams::Protocols::TLS1_3},
};
// These noTLS* tokens exist for backwards compatibility.
const std::map<std::string, SSLParams::Protocols> validNoConfigs{
{"noTLS1_0", SSLParams::Protocols::TLS1_0},
{"noTLS1_1", SSLParams::Protocols::TLS1_1},
{"noTLS1_2", SSLParams::Protocols::TLS1_2},
{"noTLS1_3", SSLParams::Protocols::TLS1_3},
};
// Map the tokens to their enum values, and push them onto the list of disabled protocols.
for (const std::string& token : tokens) {
auto mappedToken = validConfigs.find(token);
if (mappedToken != validConfigs.end()) {
sslGlobalParams.sslDisabledProtocols.push_back(mappedToken->second);
continue;
}
if (mode == SSLDisabledProtocolsMode::kAcceptNegativePrefix) {
auto mappedNoToken = validNoConfigs.find(token);
if (mappedNoToken != validNoConfigs.end()) {
sslGlobalParams.sslDisabledProtocols.push_back(mappedNoToken->second);
continue;
}
}
return Status(ErrorCodes::BadValue, "Unrecognized disabledProtocols '" + token + "'");
}
return Status::OK();
}
Status parseCertificateSelector(SSLParams::CertificateSelector* selector,
StringData name,
StringData value) {
selector->subject.clear();
selector->thumbprint.clear();
const auto delim = value.find('=');
if (delim == std::string::npos) {
return {ErrorCodes::BadValue,
str::stream() << "Certificate selector for '" << name
<< "' must be a key=value pair"};
}
auto key = value.substr(0, delim);
if (key == "subject") {
selector->subject = value.substr(delim + 1).toString();
return Status::OK();
}
if (key != "thumbprint") {
return {ErrorCodes::BadValue,
str::stream() << "Unknown certificate selector property for '" << name << "': '"
<< key << "'"};
}
try {
selector->thumbprint = hexToVector(value.substr(delim + 1));
} catch (const DBException& ex) {
return {ErrorCodes::BadValue,
str::stream() << "Invalid certificate selector value for '" << name
<< "': " << ex.reason()};
}
return Status::OK();
}
StatusWith<SSLParams::SSLModes> SSLParams::sslModeParse(StringData strMode) {
if (strMode == "disabled") {
return SSLParams::SSLMode_disabled;
} else if (strMode == "allowSSL") {
return SSLParams::SSLMode_allowSSL;
} else if (strMode == "preferSSL") {
return SSLParams::SSLMode_preferSSL;
} else if (strMode == "requireSSL") {
return SSLParams::SSLMode_requireSSL;
} else {
return Status(
ErrorCodes::BadValue,
str::stream()
<< "Invalid sslMode setting '" << strMode
<< "', expected one of: 'disabled', 'allowSSL', 'preferSSL', or 'requireSSL'");
}
}
StatusWith<SSLParams::SSLModes> SSLParams::tlsModeParse(StringData strMode) {
if (strMode == "disabled") {
return SSLParams::SSLMode_disabled;
} else if (strMode == "allowTLS") {
return SSLParams::SSLMode_allowSSL;
} else if (strMode == "preferTLS") {
return SSLParams::SSLMode_preferSSL;
} else if (strMode == "requireTLS") {
return SSLParams::SSLMode_requireSSL;
} else {
return Status(
ErrorCodes::BadValue,
str::stream()
<< "Invalid tlsMode setting '" << strMode
<< "', expected one of: 'disabled', 'allowTLS', 'preferTLS', or 'requireTLS'");
}
}
std::string SSLParams::sslModeFormat(int mode) {
switch (mode) {
case SSLParams::SSLMode_disabled:
return "disabled";
case SSLParams::SSLMode_allowSSL:
return "allowSSL";
case SSLParams::SSLMode_preferSSL:
return "preferSSL";
case SSLParams::SSLMode_requireSSL:
return "requireSSL";
default:
// Default case because sslMode is an AtomicWord<int> and not bound by enum rules.
return "unknown";
}
}
std::string SSLParams::tlsModeFormat(int mode) {
switch (mode) {
case SSLParams::SSLMode_disabled:
return "disabled";
case SSLParams::SSLMode_allowSSL:
return "allowTLS";
case SSLParams::SSLMode_preferSSL:
return "preferTLS";
case SSLParams::SSLMode_requireSSL:
return "requireTLS";
default:
// Default case because sslMode is an AtomicWord<int> and not bound by enum rules.
return "unknown";
}
}
} // namespace mongo
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