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#include <Interpreters/Access/InterpreterCreateUserQuery.h>
#include <Access/AccessControl.h>
#include <Access/ContextAccess.h>
#include <Access/ReplicatedAccessStorage.h>
#include <Access/User.h>
#include <Common/logger_useful.h>
#include <Interpreters/Access/InterpreterSetRoleQuery.h>
#include <Interpreters/Context.h>
#include <Interpreters/executeDDLQueryOnCluster.h>
#include <Interpreters/removeOnClusterClauseIfNeeded.h>
#include <Parsers/ASTDatabaseOrNone.h>
#include <Parsers/Access/ASTCreateUserQuery.h>
#include <Parsers/Access/ASTRolesOrUsersSet.h>
#include <Parsers/Access/ASTUserNameWithHost.h>
#include <boost/range/algorithm/copy.hpp>
namespace DB
{
namespace ErrorCodes
{
extern const int BAD_ARGUMENTS;
extern const int ACCESS_ENTITY_ALREADY_EXISTS;
}
namespace
{
void updateUserFromQueryImpl(
User & user,
const ASTCreateUserQuery & query,
const std::optional<AuthenticationData> auth_data,
const std::shared_ptr<ASTUserNameWithHost> & override_name,
const std::optional<RolesOrUsersSet> & override_default_roles,
const std::optional<SettingsProfileElements> & override_settings,
const std::optional<RolesOrUsersSet> & override_grantees,
bool allow_implicit_no_password,
bool allow_no_password,
bool allow_plaintext_password)
{
if (override_name)
user.setName(override_name->toString());
else if (query.new_name)
user.setName(*query.new_name);
else if (query.names->size() == 1)
user.setName(query.names->front()->toString());
if (!query.attach && !query.alter && !auth_data && !allow_implicit_no_password)
throw Exception(ErrorCodes::BAD_ARGUMENTS,
"Authentication type NO_PASSWORD must "
"be explicitly specified, check the setting allow_implicit_no_password "
"in the server configuration");
if (auth_data)
user.auth_data = *auth_data;
if (auth_data || !query.alter)
{
auto auth_type = user.auth_data.getType();
if (((auth_type == AuthenticationType::NO_PASSWORD) && !allow_no_password) ||
((auth_type == AuthenticationType::PLAINTEXT_PASSWORD) && !allow_plaintext_password))
{
throw Exception(ErrorCodes::BAD_ARGUMENTS,
"Authentication type {} is not allowed, check the setting allow_{} in the server configuration",
toString(auth_type),
AuthenticationTypeInfo::get(auth_type).name);
}
}
if (override_name && !override_name->host_pattern.empty())
{
user.allowed_client_hosts = AllowedClientHosts{};
user.allowed_client_hosts.addLikePattern(override_name->host_pattern);
}
else if (query.hosts)
user.allowed_client_hosts = *query.hosts;
if (query.remove_hosts)
user.allowed_client_hosts.remove(*query.remove_hosts);
if (query.add_hosts)
user.allowed_client_hosts.add(*query.add_hosts);
auto set_default_roles = [&](const RolesOrUsersSet & default_roles_)
{
if (!query.alter && !default_roles_.all)
user.granted_roles.grant(default_roles_.getMatchingIDs());
InterpreterSetRoleQuery::updateUserSetDefaultRoles(user, default_roles_);
};
if (override_default_roles)
set_default_roles(*override_default_roles);
else if (query.default_roles)
set_default_roles(*query.default_roles);
if (query.default_database)
user.default_database = query.default_database->database_name;
if (override_settings)
user.settings = *override_settings;
else if (query.settings)
user.settings = *query.settings;
if (override_grantees)
user.grantees = *override_grantees;
else if (query.grantees)
user.grantees = *query.grantees;
}
}
BlockIO InterpreterCreateUserQuery::execute()
{
const auto updated_query_ptr = removeOnClusterClauseIfNeeded(query_ptr, getContext());
const auto & query = updated_query_ptr->as<const ASTCreateUserQuery &>();
auto & access_control = getContext()->getAccessControl();
auto access = getContext()->getAccess();
access->checkAccess(query.alter ? AccessType::ALTER_USER : AccessType::CREATE_USER);
bool implicit_no_password_allowed = access_control.isImplicitNoPasswordAllowed();
bool no_password_allowed = access_control.isNoPasswordAllowed();
bool plaintext_password_allowed = access_control.isPlaintextPasswordAllowed();
std::optional<AuthenticationData> auth_data;
if (query.auth_data)
auth_data = AuthenticationData::fromAST(*query.auth_data, getContext(), !query.attach);
std::optional<RolesOrUsersSet> default_roles_from_query;
if (query.default_roles)
{
default_roles_from_query = RolesOrUsersSet{*query.default_roles, access_control};
if (!query.alter && !default_roles_from_query->all)
{
for (const UUID & role : default_roles_from_query->getMatchingIDs())
access->checkAdminOption(role);
}
}
std::optional<SettingsProfileElements> settings_from_query;
if (query.settings)
{
settings_from_query = SettingsProfileElements{*query.settings, access_control};
if (!query.attach)
getContext()->checkSettingsConstraints(*settings_from_query, SettingSource::USER);
}
if (!query.cluster.empty())
return executeDDLQueryOnCluster(updated_query_ptr, getContext());
IAccessStorage * storage = &access_control;
MultipleAccessStorage::StoragePtr storage_ptr;
if (!query.storage_name.empty())
{
storage_ptr = access_control.getStorageByName(query.storage_name);
storage = storage_ptr.get();
}
Strings names = query.names->toStrings();
if (query.alter)
{
std::optional<RolesOrUsersSet> grantees_from_query;
if (query.grantees)
grantees_from_query = RolesOrUsersSet{*query.grantees, access_control};
auto update_func = [&](const AccessEntityPtr & entity) -> AccessEntityPtr
{
auto updated_user = typeid_cast<std::shared_ptr<User>>(entity->clone());
updateUserFromQueryImpl(*updated_user, query, auth_data, {}, default_roles_from_query, settings_from_query, grantees_from_query, implicit_no_password_allowed, no_password_allowed, plaintext_password_allowed);
return updated_user;
};
if (query.if_exists)
{
auto ids = storage->find<User>(names);
storage->tryUpdate(ids, update_func);
}
else
storage->update(storage->getIDs<User>(names), update_func);
}
else
{
std::vector<AccessEntityPtr> new_users;
for (const auto & name : *query.names)
{
auto new_user = std::make_shared<User>();
updateUserFromQueryImpl(*new_user, query, auth_data, name, default_roles_from_query, settings_from_query, RolesOrUsersSet::AllTag{}, implicit_no_password_allowed, no_password_allowed, plaintext_password_allowed);
new_users.emplace_back(std::move(new_user));
}
if (!query.storage_name.empty())
{
for (const auto & name : names)
{
if (auto another_storage_ptr = access_control.findExcludingStorage(AccessEntityType::USER, name, storage_ptr))
throw Exception(ErrorCodes::ACCESS_ENTITY_ALREADY_EXISTS, "User {} already exists in storage {}", name, another_storage_ptr->getStorageName());
}
}
std::vector<UUID> ids;
if (query.if_not_exists)
ids = storage->tryInsert(new_users);
else if (query.or_replace)
ids = storage->insertOrReplace(new_users);
else
ids = storage->insert(new_users);
if (query.grantees)
{
RolesOrUsersSet grantees_from_query = RolesOrUsersSet{*query.grantees, access_control};
access_control.update(ids, [&](const AccessEntityPtr & entity) -> AccessEntityPtr
{
auto updated_user = typeid_cast<std::shared_ptr<User>>(entity->clone());
updated_user->grantees = grantees_from_query;
return updated_user;
});
}
}
return {};
}
void InterpreterCreateUserQuery::updateUserFromQuery(User & user, const ASTCreateUserQuery & query, bool allow_no_password, bool allow_plaintext_password)
{
std::optional<AuthenticationData> auth_data;
if (query.auth_data)
auth_data = AuthenticationData::fromAST(*query.auth_data, {}, !query.attach);
updateUserFromQueryImpl(user, query, auth_data, {}, {}, {}, {}, allow_no_password, allow_plaintext_password, true);
}
}
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