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/**
* Copyright (C) 2015 MongoDB Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* 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 GNU Affero General 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.
*/
#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kNetwork
#include "mongo/platform/basic.h"
#include "mongo/client/mongo_uri.h"
#include "mongo/base/status_with.h"
#include "mongo/bson/bsonobjbuilder.h"
#include "mongo/client/dbclient_base.h"
#include "mongo/db/auth/sasl_command_constants.h"
#include "mongo/util/mongoutils/str.h"
#include "mongo/util/password_digest.h"
#include <boost/algorithm/string/case_conv.hpp>
#include <boost/algorithm/string/classification.hpp>
#include <boost/algorithm/string/predicate.hpp>
#include <boost/algorithm/string/split.hpp>
#include <iterator>
namespace mongo {
namespace {
const char kAuthMechanismPropertiesKey[] = "mechanism_properties";
// CANONICALIZE_HOST_NAME is currently unsupported
const char kAuthServiceName[] = "SERVICE_NAME";
const char kAuthServiceRealm[] = "SERVICE_REALM";
const char kAuthMechMongoCR[] = "MONGODB-CR";
const char kAuthMechScramSha1[] = "SCRAM-SHA-1";
const char kAuthMechDefault[] = "DEFAULT";
const char* const kSupportedAuthMechanismProperties[] = {kAuthServiceName, kAuthServiceRealm};
BSONObj parseAuthMechanismProperties(const std::string& propStr) {
BSONObjBuilder bob;
std::vector<std::string> props;
boost::algorithm::split(props, propStr, boost::algorithm::is_any_of(",:"));
for (std::vector<std::string>::const_iterator it = props.begin(); it != props.end(); ++it) {
std::string prop((boost::algorithm::to_upper_copy(*it))); // normalize case
uassert(ErrorCodes::FailedToParse,
str::stream() << "authMechanismProperty: " << *it << " is not supported",
std::count(kSupportedAuthMechanismProperties,
std::end(kSupportedAuthMechanismProperties),
prop));
++it;
uassert(ErrorCodes::FailedToParse,
str::stream() << "authMechanismProperty: " << prop << " must have a value",
it != props.end());
bob.append(prop, *it);
}
return bob.obj();
}
std::string authKeyCopyDBMongoCR(const std::string& username,
const std::string& password,
const std::string& nonce) {
md5digest d;
std::string passwordDigest = createPasswordDigest(username, password);
{
md5_state_t st;
md5_init(&st);
md5_append(&st, reinterpret_cast<const md5_byte_t*>(nonce.c_str()), nonce.size());
md5_append(&st, reinterpret_cast<const md5_byte_t*>(username.data()), username.length());
md5_append(&st,
reinterpret_cast<const md5_byte_t*>(passwordDigest.c_str()),
passwordDigest.size());
md5_finish(&st, d);
}
return digestToString(d);
}
} // namespace
BSONObj MongoURI::_makeAuthObjFromOptions(int maxWireVersion) const {
BSONObjBuilder bob;
// Add the username and optional password
invariant(!_user.empty());
std::string username(_user); // may have to tack on service realm before we append
if (!_password.empty())
bob.append(saslCommandPasswordFieldName, _password);
OptionsMap::const_iterator it;
it = _options.find("authSource");
if (it != _options.end()) {
bob.append(saslCommandUserDBFieldName, it->second);
} else if (!_database.empty()) {
bob.append(saslCommandUserDBFieldName, _database);
} else {
bob.append(saslCommandUserDBFieldName, "admin");
}
it = _options.find("authMechanism");
if (it != _options.end()) {
bob.append(saslCommandMechanismFieldName, it->second);
} else if (maxWireVersion >= 3) {
bob.append(saslCommandMechanismFieldName, kAuthMechScramSha1);
} else {
bob.append(saslCommandMechanismFieldName, kAuthMechMongoCR);
}
it = _options.find("authMechanismProperties");
if (it != _options.end()) {
BSONObj parsed(parseAuthMechanismProperties(it->second));
bool hasNameProp = parsed.hasField(kAuthServiceName);
bool hasRealmProp = parsed.hasField(kAuthServiceRealm);
uassert(ErrorCodes::FailedToParse,
"Cannot specify both gssapiServiceName and SERVICE_NAME",
!(hasNameProp && _options.count("gssapiServiceName")));
// we append the parsed object so that mechanisms that don't accept it can assert.
bob.append(kAuthMechanismPropertiesKey, parsed);
// we still append using the old way the SASL code expects it
if (hasNameProp) {
bob.append(saslCommandServiceNameFieldName, parsed[kAuthServiceName].String());
}
// if we specified a realm, we just append it to the username as the SASL code
// expects it that way.
if (hasRealmProp) {
username.append("@").append(parsed[kAuthServiceRealm].String());
}
}
it = _options.find("gssapiServiceName");
if (it != _options.end()) {
bob.append(saslCommandServiceNameFieldName, it->second);
}
bob.append("user", username);
return bob.obj();
}
DBClientBase* MongoURI::connect(StringData applicationName,
std::string& errmsg,
boost::optional<double> socketTimeoutSecs) const {
OptionsMap::const_iterator it = _options.find("socketTimeoutMS");
if (it != _options.end() && !socketTimeoutSecs) {
try {
socketTimeoutSecs = std::stod(it->second) / 1000;
} catch (const std::exception& e) {
uasserted(ErrorCodes::BadValue,
str::stream() << "Unable to parse socketTimeoutMS value" << causedBy(e));
}
}
auto ret = std::unique_ptr<DBClientBase>(
_connectString.connect(applicationName, errmsg, socketTimeoutSecs.value_or(0.0), this));
if (!ret) {
return nullptr;
}
if (!_user.empty()) {
ret->auth(_makeAuthObjFromOptions(ret->getMaxWireVersion()));
}
return ret.release();
}
} // namespace mongo
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