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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/db/auth/user_set.h"
#include <algorithm>
namespace mongo {
namespace {
class UserSetNameIteratorImpl : public UserNameIterator::Impl {
UserSetNameIteratorImpl(const UserSetNameIteratorImpl&) = delete;
UserSetNameIteratorImpl& operator=(const UserSetNameIteratorImpl&) = delete;
public:
UserSetNameIteratorImpl(const UserSet::const_iterator& begin,
const UserSet::const_iterator& end)
: _curr(begin), _end(end) {}
~UserSetNameIteratorImpl() = default;
bool more() const override {
return _curr != _end;
}
const UserName& next() override {
return (*(_curr++))->getName();
}
const UserName& get() const override {
return (*_curr)->getName();
}
UserNameIterator::Impl* doClone() const override {
return new UserSetNameIteratorImpl(_curr, _end);
}
private:
UserSet::const_iterator _curr;
UserSet::const_iterator _end;
};
} // namespace
UserSet::UserSet() = default;
void UserSet::add(UserHandle user) {
auto it = std::find_if(_users.begin(), _users.end(), [&](const auto& storedUser) {
return user->getName().getDB() == storedUser->getName().getDB();
});
if (it == _users.end()) {
_users.push_back(std::move(user));
} else {
*it = std::move(user);
}
}
void UserSet::removeByDBName(StringData dbname) {
auto it = std::find_if(_users.begin(), _users.end(), [&](const auto& user) {
return user->getName().getDB() == dbname;
});
if (it != _users.end()) {
_users.erase(it);
}
}
void UserSet::replaceAt(iterator it, UserHandle replacement) {
*it = std::move(replacement);
}
void UserSet::removeAt(iterator it) {
_users.erase(it);
}
UserHandle UserSet::lookup(const UserName& name) const {
auto it = std::find_if(
_users.begin(), _users.end(), [&](const auto& user) { return user->getName() == name; });
return (it != _users.end()) ? *it : UserHandle();
}
UserHandle UserSet::lookupByDBName(StringData dbname) const {
auto it = std::find_if(_users.begin(), _users.end(), [&](const auto& user) {
return user->getName().getDB() == dbname;
});
return (it != _users.end()) ? *it : UserHandle();
}
UserNameIterator UserSet::getNames() const {
return UserNameIterator(
std::make_unique<UserSetNameIteratorImpl>(_users.cbegin(), _users.cend()));
}
} // namespace mongo
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