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https://issues.apache.org/jira/browse/CASSANDRA-13681?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Benjamin Lerer resolved CASSANDRA-13681.
----------------------------------------
Resolution: Invalid
> checkAccess throws exceptions when statement does not exist
> -----------------------------------------------------------
>
> Key: CASSANDRA-13681
> URL: https://issues.apache.org/jira/browse/CASSANDRA-13681
> Project: Cassandra
> Issue Type: Bug
> Components: CQL
> Reporter: Hao Zhong
>
> CASSANDRA-6687 fixed a wrong exception. In DropTableStatement, the buggy code
> is:
> {code}
> public void checkAccess(ClientState state) throws UnauthorizedException,
> InvalidRequestException
> {
> state.hasColumnFamilyAccess(keyspace(), columnFamily(),
> Permission.DROP);
> }
> {code}
> The fixed code is:
> {code}
> public void checkAccess(ClientState state) throws UnauthorizedException,
> InvalidRequestException
> {
> try
> {
> state.hasColumnFamilyAccess(keyspace(), columnFamily(),
> Permission.DROP);
> }
> catch (InvalidRequestException e)
> {
> if (!ifExists)
> throw e;
> }
> }
> {code}
> I found that ModificationStatement_checkAccess can have the same problem,
> since it calls state.hasColumnFamilyAccess. In particular, its code is as
> follow:
> {code}
> public void checkAccess(ClientState state) throws InvalidRequestException,
> UnauthorizedException
> {
> state.hasColumnFamilyAccess(metadata, Permission.MODIFY);
> // CAS updates can be used to simulate a SELECT query, so should
> require Permission.SELECT as well.
> if (hasConditions())
> state.hasColumnFamilyAccess(metadata, Permission.SELECT);
> // MV updates need to get the current state from the table, and might
> update the views
> // Require Permission.SELECT on the base table, and Permission.MODIFY
> on the views
> Iterator<ViewMetadata> views = View.findAll(keyspace(),
> columnFamily()).iterator();
> if (views.hasNext())
> {
> state.hasColumnFamilyAccess(metadata, Permission.SELECT);
> do
> {
> state.hasColumnFamilyAccess(views.next().metadata,
> Permission.MODIFY);
> } while (views.hasNext());
> }
> for (Function function : getFunctions())
> state.ensureHasPermission(Permission.EXECUTE, function);
> }
> {code}
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