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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.
*/
#define MONGO_LOGV2_DEFAULT_COMPONENT ::mongo::logv2::LogComponent::kAccessControl
#include "mongo/platform/basic.h"
#include "mongo/db/auth/authorization_manager_impl.h"
#include <memory>
#include <string>
#include <vector>
#include "mongo/base/init.h"
#include "mongo/base/shim.h"
#include "mongo/base/status.h"
#include "mongo/bson/util/bson_extract.h"
#include "mongo/config.h"
#include "mongo/crypto/mechanism_scram.h"
#include "mongo/db/auth/address_restriction.h"
#include "mongo/db/auth/auth_types_gen.h"
#include "mongo/db/auth/authorization_manager_global_parameters_gen.h"
#include "mongo/db/auth/authorization_manager_impl_parameters_gen.h"
#include "mongo/db/auth/authorization_session_impl.h"
#include "mongo/db/auth/authz_manager_external_state.h"
#include "mongo/db/auth/sasl_options.h"
#include "mongo/db/auth/user_document_parser.h"
#include "mongo/db/auth/user_management_commands_parser.h"
#include "mongo/db/curop.h"
#include "mongo/db/global_settings.h"
#include "mongo/db/mongod_options.h"
#include "mongo/logv2/log.h"
#include "mongo/util/assert_util.h"
#include "mongo/util/fail_point.h"
#include "mongo/util/net/ssl_peer_info.h"
#include "mongo/util/net/ssl_types.h"
#include "mongo/util/str.h"
namespace mongo {
namespace {
MONGO_INITIALIZER_GENERAL(SetupInternalSecurityUser,
("EndStartupOptionStorage"),
("CreateAuthorizationManager"))
(InitializerContext* const context) try {
UserHandle user(User(UserName("__system", "local")));
ActionSet allActions;
allActions.addAllActions();
PrivilegeVector privileges;
auth::generateUniversalPrivileges(&privileges);
user->addPrivileges(privileges);
if (mongodGlobalParams.allowlistedClusterNetwork) {
const auto& allowlist = *mongodGlobalParams.allowlistedClusterNetwork;
auto restriction = std::make_unique<ClientSourceRestriction>(allowlist);
auto restrictionSet = std::make_unique<RestrictionSet<>>(std::move(restriction));
auto restrictionDocument =
std::make_unique<RestrictionDocument<>>(std::move(restrictionSet));
RestrictionDocuments clusterAllowList(std::move(restrictionDocument));
user->setRestrictions(std::move(clusterAllowList));
}
internalSecurity.user = user;
} catch (...) {
uassertStatusOK(exceptionToStatus());
}
class PinnedUserSetParameter {
public:
void append(BSONObjBuilder& b, const std::string& name) const {
BSONArrayBuilder sub(b.subarrayStart(name));
stdx::lock_guard<Latch> lk(_mutex);
for (const auto& username : _pinnedUsersList) {
BSONObjBuilder nameObj(sub.subobjStart());
nameObj << AuthorizationManager::USER_NAME_FIELD_NAME << username.getUser()
<< AuthorizationManager::USER_DB_FIELD_NAME << username.getDB();
}
}
Status set(const BSONElement& newValueElement) {
if (newValueElement.type() == String) {
return setFromString(newValueElement.valuestrsafe());
} else if (newValueElement.type() == Array) {
auto array = static_cast<BSONArray>(newValueElement.embeddedObject());
std::vector<UserName> out;
auto status = auth::parseUserNamesFromBSONArray(array, "", &out);
if (!status.isOK())
return status;
status = _checkForSystemUser(out);
if (!status.isOK()) {
return status;
}
stdx::lock_guard<Latch> lk(_mutex);
_pinnedUsersList = out;
auto authzManager = _authzManager;
if (!authzManager) {
return Status::OK();
}
authzManager->updatePinnedUsersList(std::move(out));
return Status::OK();
} else {
return {ErrorCodes::BadValue,
"authorizationManagerPinnedUsers must be either a string or a BSON array"};
}
}
Status setFromString(const std::string& str) {
std::vector<std::string> strList;
str::splitStringDelim(str, &strList, ',');
std::vector<UserName> out;
for (const auto& nameStr : strList) {
auto swUserName = UserName::parse(nameStr);
if (!swUserName.isOK()) {
return swUserName.getStatus();
}
out.push_back(std::move(swUserName.getValue()));
}
auto status = _checkForSystemUser(out);
if (!status.isOK()) {
return status;
}
stdx::lock_guard<Latch> lk(_mutex);
_pinnedUsersList = out;
auto authzManager = _authzManager;
if (!authzManager) {
return Status::OK();
}
authzManager->updatePinnedUsersList(std::move(out));
return Status::OK();
}
void setAuthzManager(AuthorizationManager* authzManager) {
stdx::lock_guard<Latch> lk(_mutex);
_authzManager = authzManager;
_authzManager->updatePinnedUsersList(std::move(_pinnedUsersList));
}
private:
Status _checkForSystemUser(const std::vector<UserName>& names) {
if (std::any_of(names.begin(), names.end(), [&](const UserName& userName) {
return (userName == internalSecurity.user->getName());
})) {
return {ErrorCodes::BadValue,
"Cannot set __system as a pinned user, it is always pinned"};
}
return Status::OK();
}
mutable Mutex _mutex = MONGO_MAKE_LATCH("PinnedUserSetParameter::_mutex");
AuthorizationManager* _authzManager = nullptr;
std::vector<UserName> _pinnedUsersList;
} authorizationManagerPinnedUsers;
bool isAuthzNamespace(const NamespaceString& nss) {
return (nss == AuthorizationManager::rolesCollectionNamespace ||
nss == AuthorizationManager::usersCollectionNamespace ||
nss == AuthorizationManager::versionCollectionNamespace);
}
bool isAuthzCollection(StringData coll) {
return (coll == AuthorizationManager::rolesCollectionNamespace.coll() ||
coll == AuthorizationManager::usersCollectionNamespace.coll() ||
coll == AuthorizationManager::versionCollectionNamespace.coll());
}
bool loggedCommandOperatesOnAuthzData(const NamespaceString& nss, const BSONObj& cmdObj) {
if (nss != AuthorizationManager::adminCommandNamespace)
return false;
const StringData cmdName(cmdObj.firstElement().fieldNameStringData());
if (cmdName == "drop") {
return isAuthzCollection(cmdObj.firstElement().valueStringData());
} else if (cmdName == "dropDatabase") {
return true;
} else if (cmdName == "renameCollection") {
const NamespaceString fromNamespace(cmdObj.firstElement().valueStringDataSafe());
const NamespaceString toNamespace(cmdObj["to"].valueStringDataSafe());
if (fromNamespace.isAdminDB() || toNamespace.isAdminDB()) {
return isAuthzCollection(fromNamespace.coll()) || isAuthzCollection(toNamespace.coll());
} else {
return false;
}
} else if (cmdName == "dropIndexes" || cmdName == "deleteIndexes") {
return false;
} else if (cmdName == "create") {
return false;
} else {
return true;
}
}
bool appliesToAuthzData(StringData op, const NamespaceString& nss, const BSONObj& o) {
if (op.empty()) {
return true;
}
switch (op[0]) {
case 'i':
case 'u':
case 'd':
if (op.size() != 1) {
return false; // "db" op type
}
return isAuthzNamespace(nss);
case 'c':
return loggedCommandOperatesOnAuthzData(nss, o);
case 'n':
return false;
default:
return true;
}
}
/**
* Returns true if roles for this user were provided by the client, and can be obtained from
* the connection.
*/
bool shouldUseRolesFromConnection(OperationContext* opCtx, const UserName& userName) {
#ifdef MONGO_CONFIG_SSL
if (!opCtx || !opCtx->getClient() || !opCtx->getClient()->session()) {
return false;
}
if (!allowRolesFromX509Certificates) {
return false;
}
auto& sslPeerInfo = SSLPeerInfo::forSession(opCtx->getClient()->session());
return sslPeerInfo.subjectName.toString() == userName.getUser() &&
userName.getDB() == "$external"_sd && !sslPeerInfo.roles.empty();
#else
return false;
#endif
}
std::unique_ptr<AuthorizationManager> authorizationManagerCreateImpl(
ServiceContext* serviceContext) {
return std::make_unique<AuthorizationManagerImpl>(serviceContext,
AuthzManagerExternalState::create());
}
auto authorizationManagerCreateRegistration =
MONGO_WEAK_FUNCTION_REGISTRATION(AuthorizationManager::create, authorizationManagerCreateImpl);
MONGO_FAIL_POINT_DEFINE(waitForUserCacheInvalidation);
void handleWaitForUserCacheInvalidation(OperationContext* opCtx, const UserHandle& user) {
auto fp = waitForUserCacheInvalidation.scopedIf([&](const auto& bsonData) {
IDLParserErrorContext ctx("waitForUserCacheInvalidation");
auto data = WaitForUserCacheInvalidationFailPoint::parse(ctx, bsonData);
const auto& blockedUserName = data.getUserName();
return blockedUserName == user->getName();
});
if (!fp.isActive()) {
return;
}
// Since we do not have notifications from both the user cache and the fail point itself,
// loop until our condition is satisfied. To avoid this loop, we would need a way to union
// notifications from both. This may be possible with a CancellationToken and a condition
// variable or with some novel Notifiable/Waitable-like type that synthesizes multiple
// notifications.
constexpr auto kCheckPeriod = Milliseconds{1};
auto m = MONGO_MAKE_LATCH();
auto cv = stdx::condition_variable{};
auto pred = [&] { return !fp.isStillEnabled() || !user.isValid(); };
auto waitOneCycle = [&] {
auto lk = stdx::unique_lock(m);
return !opCtx->waitForConditionOrInterruptFor(cv, lk, kCheckPeriod, pred);
};
while (waitOneCycle()) {
// Not yet finished.
}
}
} // namespace
int authorizationManagerCacheSize;
void AuthorizationManagerPinnedUsersServerParameter::append(OperationContext* opCtx,
BSONObjBuilder& out,
const std::string& name) {
return authorizationManagerPinnedUsers.append(out, name);
}
Status AuthorizationManagerPinnedUsersServerParameter::set(const BSONElement& newValue) {
return authorizationManagerPinnedUsers.set(newValue);
}
Status AuthorizationManagerPinnedUsersServerParameter::setFromString(const std::string& str) {
return authorizationManagerPinnedUsers.setFromString(str);
}
AuthorizationManagerImpl::AuthorizationManagerImpl(
ServiceContext* service, std::unique_ptr<AuthzManagerExternalState> externalState)
: _externalState(std::move(externalState)),
_authSchemaVersionCache(service, _threadPool, _externalState.get()),
_userCache(service,
_threadPool,
authorizationManagerCacheSize,
&_authSchemaVersionCache,
_externalState.get()),
_threadPool([] {
ThreadPool::Options options;
options.poolName = "AuthorizationManager";
options.minThreads = 0;
options.maxThreads = ThreadPool::Options::kUnlimited;
return options;
}()) {
_threadPool.startup();
}
AuthorizationManagerImpl::~AuthorizationManagerImpl() = default;
std::unique_ptr<AuthorizationSession> AuthorizationManagerImpl::makeAuthorizationSession() {
return std::make_unique<AuthorizationSessionImpl>(
_externalState->makeAuthzSessionExternalState(this),
AuthorizationSessionImpl::InstallMockForTestingOrAuthImpl{});
}
void AuthorizationManagerImpl::setShouldValidateAuthSchemaOnStartup(bool validate) {
_startupAuthSchemaValidation = validate;
}
bool AuthorizationManagerImpl::shouldValidateAuthSchemaOnStartup() {
return _startupAuthSchemaValidation;
}
Status AuthorizationManagerImpl::getAuthorizationVersion(OperationContext* opCtx,
int* version) try {
*version = *_authSchemaVersionCache.acquire(opCtx, 0);
return Status::OK();
} catch (const DBException& ex) {
return ex.toStatus();
}
OID AuthorizationManagerImpl::getCacheGeneration() {
stdx::lock_guard lg(_cacheGenerationMutex);
return _cacheGeneration;
}
void AuthorizationManagerImpl::setAuthEnabled(bool enabled) {
_authEnabled = enabled;
}
bool AuthorizationManagerImpl::isAuthEnabled() const {
return _authEnabled;
}
bool AuthorizationManagerImpl::hasAnyPrivilegeDocuments(OperationContext* opCtx) {
if (_privilegeDocsExist.load()) {
// If we know that a user exists, don't re-check.
return true;
}
bool privDocsExist = _externalState->hasAnyPrivilegeDocuments(opCtx);
if (privDocsExist) {
_privilegeDocsExist.store(true);
}
return _privilegeDocsExist.load();
}
Status AuthorizationManagerImpl::getUserDescription(OperationContext* opCtx,
const UserName& userName,
BSONObj* result) {
return _externalState->getUserDescription(opCtx, UserRequest(userName, boost::none), result);
}
Status AuthorizationManagerImpl::rolesExist(OperationContext* opCtx,
const std::vector<RoleName>& roleNames) {
return _externalState->rolesExist(opCtx, roleNames);
}
StatusWith<AuthorizationManager::ResolvedRoleData> AuthorizationManagerImpl::resolveRoles(
OperationContext* opCtx, const std::vector<RoleName>& roleNames, ResolveRoleOption option) {
return _externalState->resolveRoles(opCtx, roleNames, option);
}
Status AuthorizationManagerImpl::getRolesDescription(OperationContext* opCtx,
const std::vector<RoleName>& roleName,
PrivilegeFormat privileges,
AuthenticationRestrictionsFormat restrictions,
std::vector<BSONObj>* result) {
return _externalState->getRolesDescription(opCtx, roleName, privileges, restrictions, result);
}
Status AuthorizationManagerImpl::getRolesAsUserFragment(
OperationContext* opCtx,
const std::vector<RoleName>& roleName,
AuthenticationRestrictionsFormat restrictions,
BSONObj* result) {
return _externalState->getRolesAsUserFragment(opCtx, roleName, restrictions, result);
}
Status AuthorizationManagerImpl::getRoleDescriptionsForDB(
OperationContext* opCtx,
StringData dbname,
PrivilegeFormat privileges,
AuthenticationRestrictionsFormat restrictions,
bool showBuiltinRoles,
std::vector<BSONObj>* result) {
return _externalState->getRoleDescriptionsForDB(
opCtx, dbname, privileges, restrictions, showBuiltinRoles, result);
}
namespace {
MONGO_FAIL_POINT_DEFINE(authUserCacheBypass);
MONGO_FAIL_POINT_DEFINE(authUserCacheSleep);
} // namespace
StatusWith<UserHandle> AuthorizationManagerImpl::acquireUser(OperationContext* opCtx,
const UserName& userName) try {
if (userName == internalSecurity.user->getName()) {
return internalSecurity.user;
}
UserRequest request(userName, boost::none);
#ifdef MONGO_CONFIG_SSL
// Clients connected via TLS may present an X.509 certificate which contains an authorization
// grant. If this is the case, the roles must be provided to the external state, for expansion
// into privileges.
if (shouldUseRolesFromConnection(opCtx, userName)) {
auto& sslPeerInfo = SSLPeerInfo::forSession(opCtx->getClient()->session());
request.roles = std::set<RoleName>();
// In order to be hashable, the role names must be converted from unordered_set to a set.
std::copy(sslPeerInfo.roles.begin(),
sslPeerInfo.roles.end(),
std::inserter(*request.roles, request.roles->begin()));
}
#endif
if (authUserCacheBypass.shouldFail()) {
// Bypass cache and force a fresh load of the user.
auto loadedUser = uassertStatusOK(_externalState->getUserObject(opCtx, request));
// We have to inject into the cache in order to get a UserHandle.
auto userHandle =
_userCache.insertOrAssignAndGet(request, std::move(loadedUser), Date_t::now());
invariant(userHandle);
LOGV2_DEBUG(4859401, 1, "Bypassing user cache to load user", "user"_attr = userName);
return userHandle;
}
// Track wait time and user cache access statistics for the current op for logging. An extra
// second of delay is added via the failpoint for testing.
auto userCacheAcquisitionStats = CurOp::get(opCtx)->getMutableUserCacheAcquisitionStats(
opCtx->getClient(), opCtx->getServiceContext()->getTickSource());
if (authUserCacheSleep.shouldFail()) {
sleepsecs(1);
}
auto cachedUser = _userCache.acquire(opCtx, request);
userCacheAcquisitionStats.recordCacheAccessEnd();
invariant(cachedUser);
LOGV2_DEBUG(20226, 1, "Returning user from cache", "user"_attr = userName);
return cachedUser;
} catch (const DBException& ex) {
return ex.toStatus();
}
StatusWith<UserHandle> AuthorizationManagerImpl::reacquireUser(OperationContext* opCtx,
const UserHandle& user) {
const UserName& userName = user->getName();
handleWaitForUserCacheInvalidation(opCtx, user);
if (user.isValid()) {
return user;
}
// Make a good faith effort to acquire an up-to-date user object, since the one
// we've cached is marked "out-of-date."
auto swUserHandle = acquireUser(opCtx, userName);
if (!swUserHandle.isOK()) {
return swUserHandle.getStatus();
}
auto ret = std::move(swUserHandle.getValue());
if (user->getID() != ret->getID()) {
return {ErrorCodes::UserNotFound,
str::stream() << "User id from privilege document '" << userName.toString()
<< "' does not match user id in session."};
}
return ret;
}
void AuthorizationManagerImpl::updatePinnedUsersList(std::vector<UserName> names) {
stdx::unique_lock<Latch> lk(_pinnedUsersMutex);
_usersToPin = std::move(names);
bool noUsersToPin = _usersToPin->empty();
_pinnedUsersCond.notify_one();
if (noUsersToPin) {
LOGV2_DEBUG(20227, 1, "There were no users to pin, not starting tracker thread");
return;
}
std::call_once(_pinnedThreadTrackerStarted, [this] {
stdx::thread thread(&AuthorizationManagerImpl::_pinnedUsersThreadRoutine, this);
thread.detach();
});
}
void AuthorizationManagerImpl::_updateCacheGeneration() {
stdx::lock_guard lg(_cacheGenerationMutex);
_cacheGeneration = OID::gen();
}
void AuthorizationManagerImpl::_pinnedUsersThreadRoutine() noexcept try {
Client::initThread("PinnedUsersTracker");
std::list<UserHandle> pinnedUsers;
std::vector<UserName> usersToPin;
LOGV2_DEBUG(20228, 1, "Starting pinned users tracking thread");
while (true) {
auto opCtx = cc().makeOperationContext();
stdx::unique_lock<Latch> lk(_pinnedUsersMutex);
const Milliseconds timeout(authorizationManagerPinnedUsersRefreshIntervalMillis.load());
auto waitRes = opCtx->waitForConditionOrInterruptFor(
_pinnedUsersCond, lk, timeout, [&] { return _usersToPin.has_value(); });
if (waitRes) {
usersToPin = std::move(_usersToPin.get());
_usersToPin = boost::none;
}
lk.unlock();
if (usersToPin.empty()) {
pinnedUsers.clear();
continue;
}
// Remove any users that shouldn't be pinned anymore or that are invalid.
for (auto it = pinnedUsers.begin(); it != pinnedUsers.end();) {
const auto& user = *it;
const auto shouldPin =
std::any_of(usersToPin.begin(), usersToPin.end(), [&](const UserName& userName) {
return (user->getName() == userName);
});
if (!user.isValid() || !shouldPin) {
if (!shouldPin) {
LOGV2_DEBUG(20229, 2, "Unpinning user", "user"_attr = user->getName());
} else {
LOGV2_DEBUG(20230,
2,
"Pinned user no longer valid, will re-pin",
"user"_attr = user->getName());
}
it = pinnedUsers.erase(it);
} else {
LOGV2_DEBUG(20231,
3,
"Pinned user is still valid and pinned",
"user"_attr = user->getName());
++it;
}
}
for (const auto& userName : usersToPin) {
if (std::any_of(pinnedUsers.begin(), pinnedUsers.end(), [&](const auto& user) {
return user->getName() == userName;
})) {
continue;
}
auto swUser = acquireUser(opCtx.get(), userName);
if (swUser.isOK()) {
LOGV2_DEBUG(20232, 2, "Pinned user", "user"_attr = userName);
pinnedUsers.emplace_back(std::move(swUser.getValue()));
} else {
const auto& status = swUser.getStatus();
// If the user is not found, then it might just not exist yet. Skip this user for
// now.
if (status != ErrorCodes::UserNotFound) {
LOGV2_WARNING(20239,
"Unable to fetch pinned user",
"user"_attr = userName.toString(),
"error"_attr = status);
} else {
LOGV2_DEBUG(20233, 2, "Pinned user not found", "user"_attr = userName);
}
}
}
}
} catch (const ExceptionFor<ErrorCodes::InterruptedAtShutdown>&) {
LOGV2_DEBUG(20234, 1, "Ending pinned users tracking thread");
return;
}
void AuthorizationManagerImpl::invalidateUserByName(OperationContext* opCtx,
const UserName& userName) {
LOGV2_DEBUG(20235, 2, "Invalidating user", "user"_attr = userName);
_updateCacheGeneration();
_authSchemaVersionCache.invalidateAll();
// Invalidate the named User, assuming no externally provided roles. When roles are defined
// externally, there exists no user document which may become invalid.
_userCache.invalidate(UserRequest(userName, boost::none));
}
void AuthorizationManagerImpl::invalidateUsersFromDB(OperationContext* opCtx, StringData dbname) {
LOGV2_DEBUG(20236, 2, "Invalidating all users from database", "database"_attr = dbname);
_updateCacheGeneration();
_authSchemaVersionCache.invalidateAll();
_userCache.invalidateKeyIf(
[&](const UserRequest& userRequest) { return userRequest.name.getDB() == dbname; });
}
void AuthorizationManagerImpl::invalidateUserCache(OperationContext* opCtx) {
LOGV2_DEBUG(20237, 2, "Invalidating user cache");
_updateCacheGeneration();
_authSchemaVersionCache.invalidateAll();
_userCache.invalidateAll();
}
Status AuthorizationManagerImpl::initialize(OperationContext* opCtx) {
Status status = _externalState->initialize(opCtx);
if (!status.isOK())
return status;
authorizationManagerPinnedUsers.setAuthzManager(this);
invalidateUserCache(opCtx);
return Status::OK();
}
void AuthorizationManagerImpl::logOp(OperationContext* opCtx,
StringData op,
const NamespaceString& nss,
const BSONObj& o,
const BSONObj* o2) {
if (appliesToAuthzData(op, nss, o)) {
_externalState->logOp(opCtx, this, op, nss, o, o2);
}
}
std::vector<AuthorizationManager::CachedUserInfo> AuthorizationManagerImpl::getUserCacheInfo()
const {
auto cacheData = _userCache.getCacheInfo();
std::vector<AuthorizationManager::CachedUserInfo> ret;
ret.reserve(cacheData.size());
std::transform(
cacheData.begin(), cacheData.end(), std::back_inserter(ret), [](const auto& info) {
return AuthorizationManager::CachedUserInfo{info.key.name, info.useCount > 0};
});
return ret;
}
AuthorizationManagerImpl::AuthSchemaVersionCache::AuthSchemaVersionCache(
ServiceContext* service,
ThreadPoolInterface& threadPool,
AuthzManagerExternalState* externalState)
: ReadThroughCache(_mutex,
service,
threadPool,
[this](OperationContext* opCtx, int key, const ValueHandle& cachedValue) {
return _lookup(opCtx, key, cachedValue);
},
1 /* cacheSize */),
_externalState(externalState) {}
AuthorizationManagerImpl::AuthSchemaVersionCache::LookupResult
AuthorizationManagerImpl::AuthSchemaVersionCache::_lookup(OperationContext* opCtx,
int unusedKey,
const ValueHandle& unusedCachedValue) {
invariant(unusedKey == 0);
int authzVersion;
uassertStatusOK(_externalState->getStoredAuthorizationVersion(opCtx, &authzVersion));
return LookupResult(authzVersion);
}
AuthorizationManagerImpl::UserCacheImpl::UserCacheImpl(
ServiceContext* service,
ThreadPoolInterface& threadPool,
int cacheSize,
AuthSchemaVersionCache* authSchemaVersionCache,
AuthzManagerExternalState* externalState)
: UserCache(_mutex,
service,
threadPool,
[this](OperationContext* opCtx, const UserRequest& userReq, UserHandle cachedUser) {
return _lookup(opCtx, userReq, cachedUser);
},
cacheSize),
_authSchemaVersionCache(authSchemaVersionCache),
_externalState(externalState) {}
AuthorizationManagerImpl::UserCacheImpl::LookupResult
AuthorizationManagerImpl::UserCacheImpl::_lookup(OperationContext* opCtx,
const UserRequest& userReq,
const UserHandle& unusedCachedUser) {
LOGV2_DEBUG(20238, 1, "Getting user record", "user"_attr = userReq.name);
// Number of times to retry a user document that fetches due to transient AuthSchemaIncompatible
// errors. These errors should only ever occur during and shortly after schema upgrades.
int acquireAttemptsLeft = 2;
while (true) {
const int authzVersion = [&] {
auto authSchemaVersionHandle = _authSchemaVersionCache->acquire(opCtx, 0);
invariant(authSchemaVersionHandle);
return *authSchemaVersionHandle;
}();
switch (authzVersion) {
case schemaVersion28SCRAM:
case schemaVersion26Final:
case schemaVersion26Upgrade:
return LookupResult(uassertStatusOK(_externalState->getUserObject(opCtx, userReq)));
case schemaVersion24:
_authSchemaVersionCache->invalidateAll();
uassert(ErrorCodes::AuthSchemaIncompatible,
str::stream() << "Authorization data schema version " << schemaVersion24
<< " not supported after MongoDB version 2.6.",
--acquireAttemptsLeft);
break;
default:
uasserted(ErrorCodes::BadValue,
str::stream() << "Illegal value for authorization data schema version, "
<< authzVersion);
break;
}
}
MONGO_UNREACHABLE;
}
} // namespace mongo
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