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#include <Parsers/Access/ASTGrantQuery.h>
#include <Parsers/Access/ASTRolesOrUsersSet.h>
#include <Common/quoteString.h>
#include <IO/Operators.h>
namespace DB
{
namespace ErrorCodes
{
extern const int LOGICAL_ERROR;
}
namespace
{
void formatColumnNames(const Strings & columns, const IAST::FormatSettings & settings)
{
settings.ostr << "(";
bool need_comma = false;
for (const auto & column : columns)
{
if (std::exchange(need_comma, true))
settings.ostr << ", ";
settings.ostr << backQuoteIfNeed(column);
}
settings.ostr << ")";
}
void formatONClause(const AccessRightsElement & element, const IAST::FormatSettings & settings)
{
settings.ostr << (settings.hilite ? IAST::hilite_keyword : "") << "ON " << (settings.hilite ? IAST::hilite_none : "");
if (element.isGlobalWithParameter())
{
if (element.any_parameter)
settings.ostr << "*";
else
settings.ostr << backQuoteIfNeed(element.parameter);
}
else if (element.any_database)
{
settings.ostr << "*.*";
}
else
{
if (!element.database.empty())
settings.ostr << backQuoteIfNeed(element.database) << ".";
if (element.any_table)
settings.ostr << "*";
else
settings.ostr << backQuoteIfNeed(element.table);
}
}
void formatElementsWithoutOptions(const AccessRightsElements & elements, const IAST::FormatSettings & settings)
{
bool no_output = true;
for (size_t i = 0; i != elements.size(); ++i)
{
const auto & element = elements[i];
auto keywords = element.access_flags.toKeywords();
if (keywords.empty() || (!element.any_column && element.columns.empty()))
continue;
for (const auto & keyword : keywords)
{
if (!std::exchange(no_output, false))
settings.ostr << ", ";
settings.ostr << (settings.hilite ? IAST::hilite_keyword : "") << keyword << (settings.hilite ? IAST::hilite_none : "");
if (!element.any_column)
formatColumnNames(element.columns, settings);
}
bool next_element_on_same_db_and_table = false;
if (i != elements.size() - 1)
{
const auto & next_element = elements[i + 1];
if (element.sameDatabaseAndTableAndParameter(next_element))
{
next_element_on_same_db_and_table = true;
}
}
if (!next_element_on_same_db_and_table)
{
settings.ostr << " ";
formatONClause(element, settings);
}
}
if (no_output)
settings.ostr << (settings.hilite ? IAST::hilite_keyword : "") << "USAGE ON " << (settings.hilite ? IAST::hilite_none : "") << "*.*";
}
}
String ASTGrantQuery::getID(char) const
{
return "GrantQuery";
}
ASTPtr ASTGrantQuery::clone() const
{
auto res = std::make_shared<ASTGrantQuery>(*this);
if (roles)
res->roles = std::static_pointer_cast<ASTRolesOrUsersSet>(roles->clone());
if (grantees)
res->grantees = std::static_pointer_cast<ASTRolesOrUsersSet>(grantees->clone());
return res;
}
void ASTGrantQuery::formatImpl(const FormatSettings & settings, FormatState &, FormatStateStacked) const
{
settings.ostr << (settings.hilite ? IAST::hilite_keyword : "") << (attach_mode ? "ATTACH " : "")
<< (settings.hilite ? hilite_keyword : "") << (is_revoke ? "REVOKE" : "GRANT")
<< (settings.hilite ? IAST::hilite_none : "");
if (!access_rights_elements.sameOptions())
throw Exception(ErrorCodes::LOGICAL_ERROR, "Elements of an ASTGrantQuery are expected to have the same options");
if (!access_rights_elements.empty() && access_rights_elements[0].is_partial_revoke && !is_revoke)
throw Exception(ErrorCodes::LOGICAL_ERROR, "A partial revoke should be revoked, not granted");
bool grant_option = !access_rights_elements.empty() && access_rights_elements[0].grant_option;
formatOnCluster(settings);
if (is_revoke)
{
if (grant_option)
settings.ostr << (settings.hilite ? hilite_keyword : "") << " GRANT OPTION FOR" << (settings.hilite ? hilite_none : "");
else if (admin_option)
settings.ostr << (settings.hilite ? hilite_keyword : "") << " ADMIN OPTION FOR" << (settings.hilite ? hilite_none : "");
}
settings.ostr << " ";
if (roles)
{
roles->format(settings);
if (!access_rights_elements.empty())
throw Exception(ErrorCodes::LOGICAL_ERROR,
"ASTGrantQuery can contain either roles or access rights elements "
"to grant or revoke, not both of them");
}
else if (current_grants)
settings.ostr << (settings.hilite ? hilite_keyword : "") << " CURRENT GRANTS" << (settings.hilite ? hilite_none : "");
else
formatElementsWithoutOptions(access_rights_elements, settings);
settings.ostr << (settings.hilite ? IAST::hilite_keyword : "") << (is_revoke ? " FROM " : " TO ")
<< (settings.hilite ? IAST::hilite_none : "");
grantees->format(settings);
if (!is_revoke)
{
if (grant_option)
settings.ostr << (settings.hilite ? hilite_keyword : "") << " WITH GRANT OPTION" << (settings.hilite ? hilite_none : "");
else if (admin_option)
settings.ostr << (settings.hilite ? hilite_keyword : "") << " WITH ADMIN OPTION" << (settings.hilite ? hilite_none : "");
if (replace_access || replace_granted_roles)
settings.ostr << (settings.hilite ? hilite_keyword : "") << " WITH REPLACE OPTION" << (settings.hilite ? hilite_none : "");
}
}
void ASTGrantQuery::replaceEmptyDatabase(const String & current_database)
{
access_rights_elements.replaceEmptyDatabase(current_database);
}
void ASTGrantQuery::replaceCurrentUserTag(const String & current_user_name) const
{
if (grantees)
grantees->replaceCurrentUserTag(current_user_name);
}
}
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