/**
* Get Authorizable from inputs and put into inputHierarchy
*
* @param inputHierarchy
* @param entity
* @param sentryContext
*/
private void getInputHierarchyFromInputs(
List<List<DBModelAuthorizable>> inputHierarchy, Set<ReadEntity> inputs) {
for (ReadEntity readEntity : inputs) {
// skip the tables/view that are part of expanded view definition
// skip the Hive generated dummy entities created for queries like 'select <expr>'
if (isChildTabForView(readEntity) || isDummyEntity(readEntity)) {
continue;
}
if (readEntity.getAccessedColumns() != null && !readEntity.getAccessedColumns().isEmpty()) {
addColumnHierarchy(inputHierarchy, readEntity);
} else {
List<DBModelAuthorizable> entityHierarchy = new ArrayList<DBModelAuthorizable>();
entityHierarchy.add(hiveAuthzBinding.getAuthServer());
entityHierarchy.addAll(getAuthzHierarchyFromEntity(readEntity));
inputHierarchy.add(entityHierarchy);
}
}
}
/**
* Add column level hierarchy to inputHierarchy
*
* @param inputHierarchy
* @param entity
* @param sentryContext
*/
private void addColumnHierarchy(
List<List<DBModelAuthorizable>> inputHierarchy, ReadEntity entity) {
List<DBModelAuthorizable> entityHierarchy = new ArrayList<DBModelAuthorizable>();
entityHierarchy.add(hiveAuthzBinding.getAuthServer());
entityHierarchy.addAll(getAuthzHierarchyFromEntity(entity));
switch (entity.getType()) {
case TABLE:
case PARTITION:
List<String> cols = entity.getAccessedColumns();
for (String col : cols) {
List<DBModelAuthorizable> colHierarchy =
new ArrayList<DBModelAuthorizable>(entityHierarchy);
colHierarchy.add(new Column(col));
inputHierarchy.add(colHierarchy);
}
break;
default:
inputHierarchy.add(entityHierarchy);
}
}
/**
* Convert the input/output entities into authorizables. generate authorizables for cases like
* Database and metadata operations where the compiler doesn't capture entities. invoke the hive
* binding to validate permissions
*
* @param context
* @param stmtAuthObject
* @param stmtOperation
* @throws AuthorizationException
*/
private void authorizeWithHiveBindings(
HiveSemanticAnalyzerHookContext context,
HiveAuthzPrivileges stmtAuthObject,
HiveOperation stmtOperation)
throws AuthorizationException {
Set<ReadEntity> inputs = context.getInputs();
Set<WriteEntity> outputs = context.getOutputs();
List<List<DBModelAuthorizable>> inputHierarchy = new ArrayList<List<DBModelAuthorizable>>();
List<List<DBModelAuthorizable>> outputHierarchy = new ArrayList<List<DBModelAuthorizable>>();
if (LOG.isDebugEnabled()) {
LOG.debug("stmtAuthObject.getOperationScope() = " + stmtAuthObject.getOperationScope());
LOG.debug("context.getInputs() = " + context.getInputs());
LOG.debug("context.getOutputs() = " + context.getOutputs());
}
// Workaround to allow DESCRIBE <table> to be executed with only column-level privileges, while
// still authorizing DESCRIBE [EXTENDED|FORMATTED] as table-level.
// This is done by treating DESCRIBE <table> the same as SHOW COLUMNS, which only requires
// column
// level privs.
if (isDescTableBasic) {
stmtAuthObject = HiveAuthzPrivilegesMap.getHiveAuthzPrivileges(HiveOperation.SHOWCOLUMNS);
}
switch (stmtAuthObject.getOperationScope()) {
case SERVER:
// validate server level privileges if applicable. Eg create UDF,register jar etc ..
List<DBModelAuthorizable> serverHierarchy = new ArrayList<DBModelAuthorizable>();
serverHierarchy.add(hiveAuthzBinding.getAuthServer());
inputHierarchy.add(serverHierarchy);
break;
case DATABASE:
// workaround for database scope statements (create/alter/drop db)
List<DBModelAuthorizable> dbHierarchy = new ArrayList<DBModelAuthorizable>();
dbHierarchy.add(hiveAuthzBinding.getAuthServer());
dbHierarchy.add(currDB);
inputHierarchy.add(dbHierarchy);
outputHierarchy.add(dbHierarchy);
getInputHierarchyFromInputs(inputHierarchy, inputs);
break;
case TABLE:
// workaround for add partitions
if (partitionURI != null) {
inputHierarchy.add(ImmutableList.of(hiveAuthzBinding.getAuthServer(), partitionURI));
}
getInputHierarchyFromInputs(inputHierarchy, inputs);
for (WriteEntity writeEntity : outputs) {
if (filterWriteEntity(writeEntity)) {
continue;
}
List<DBModelAuthorizable> entityHierarchy = new ArrayList<DBModelAuthorizable>();
entityHierarchy.add(hiveAuthzBinding.getAuthServer());
entityHierarchy.addAll(getAuthzHierarchyFromEntity(writeEntity));
outputHierarchy.add(entityHierarchy);
}
// workaround for metadata queries.
// Capture the table name in pre-analyze and include that in the input entity list
if (currTab != null) {
List<DBModelAuthorizable> externalAuthorizableHierarchy =
new ArrayList<DBModelAuthorizable>();
externalAuthorizableHierarchy.add(hiveAuthzBinding.getAuthServer());
externalAuthorizableHierarchy.add(currDB);
externalAuthorizableHierarchy.add(currTab);
inputHierarchy.add(externalAuthorizableHierarchy);
}
// workaround for DDL statements
// Capture the table name in pre-analyze and include that in the output entity list
if (currOutTab != null) {
List<DBModelAuthorizable> externalAuthorizableHierarchy =
new ArrayList<DBModelAuthorizable>();
externalAuthorizableHierarchy.add(hiveAuthzBinding.getAuthServer());
externalAuthorizableHierarchy.add(currOutDB);
externalAuthorizableHierarchy.add(currOutTab);
outputHierarchy.add(externalAuthorizableHierarchy);
}
break;
case FUNCTION:
/* The 'FUNCTION' privilege scope currently used for
* - CREATE TEMP FUNCTION
* - DROP TEMP FUNCTION.
*/
if (udfURI != null) {
List<DBModelAuthorizable> udfUriHierarchy = new ArrayList<DBModelAuthorizable>();
udfUriHierarchy.add(hiveAuthzBinding.getAuthServer());
udfUriHierarchy.add(udfURI);
inputHierarchy.add(udfUriHierarchy);
for (WriteEntity writeEntity : outputs) {
List<DBModelAuthorizable> entityHierarchy = new ArrayList<DBModelAuthorizable>();
entityHierarchy.add(hiveAuthzBinding.getAuthServer());
entityHierarchy.addAll(getAuthzHierarchyFromEntity(writeEntity));
outputHierarchy.add(entityHierarchy);
}
}
break;
case CONNECT:
/* The 'CONNECT' is an implicit privilege scope currently used for
* - USE <db>
* It's allowed when the user has any privilege on the current database. For application
* backward compatibility, we allow (optional) implicit connect permission on 'default' db.
*/
List<DBModelAuthorizable> connectHierarchy = new ArrayList<DBModelAuthorizable>();
connectHierarchy.add(hiveAuthzBinding.getAuthServer());
// by default allow connect access to default db
Table currTbl = Table.ALL;
Column currCol = Column.ALL;
if (DEFAULT_DATABASE_NAME.equalsIgnoreCase(currDB.getName())
&& "false"
.equalsIgnoreCase(
authzConf.get(
HiveAuthzConf.AuthzConfVars.AUTHZ_RESTRICT_DEFAULT_DB.getVar(), "false"))) {
currDB = Database.ALL;
currTbl = Table.SOME;
}
connectHierarchy.add(currDB);
connectHierarchy.add(currTbl);
connectHierarchy.add(currCol);
inputHierarchy.add(connectHierarchy);
outputHierarchy.add(connectHierarchy);
break;
case COLUMN:
for (ReadEntity readEntity : inputs) {
if (readEntity.getAccessedColumns() != null
&& !readEntity.getAccessedColumns().isEmpty()) {
addColumnHierarchy(inputHierarchy, readEntity);
} else {
List<DBModelAuthorizable> entityHierarchy = new ArrayList<DBModelAuthorizable>();
entityHierarchy.add(hiveAuthzBinding.getAuthServer());
entityHierarchy.addAll(getAuthzHierarchyFromEntity(readEntity));
entityHierarchy.add(Column.ALL);
inputHierarchy.add(entityHierarchy);
}
}
break;
default:
throw new AuthorizationException(
"Unknown operation scope type " + stmtAuthObject.getOperationScope().toString());
}
HiveAuthzBinding binding = null;
try {
binding = getHiveBindingWithPrivilegeCache(hiveAuthzBinding, context.getUserName());
} catch (SemanticException e) {
// Will use the original hiveAuthzBinding
binding = hiveAuthzBinding;
}
// validate permission
binding.authorize(
stmtOperation, stmtAuthObject, getCurrentSubject(context), inputHierarchy, outputHierarchy);
}
