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https://reviews.apache.org/r/73981/
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Review request for ranger, bhavik patel, Dhaval Shah, Abhay Kulkarni, Madhan
Neethiraj, Ramesh Mani, Sailaja Polavarapu, and Velmurugan Periasamy.
Bugs: RANGER-3752
https://issues.apache.org/jira/browse/RANGER-3752
Repository: ranger
Description
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**Problem Statement:** While making a REST request to create Ranger policy, it
is possible that user can put same access type more than one. Since there is no
validation or restriction on duplicate entry of access type in the same policy
resource-policy items, policy get created successfully and policy text json
contains duplicate entries.
When user makes a GET request then duplicate entries are also shown. To display
the policy content, policy is read from policy text column of x_policy table,
since json entry also contains duplicate entry user will get duplicate entry of
access permission as response.
This is not an issue if user uses create/update policy rest from Ranger UI as
restriction is placed from UI itself.
**Steps to reproduce:**
1. Make the following request to create ranger policy in the "dev_hive" service
(if needed, please change the request data as per you env)
curl -ivk --header text/json -H 'Content-Type: text/json' -u admin:admin -X
POST http://localhost:6080/service/public/v2/api/policy -d
'{"service":"dev_hive","name":"URL policy:
/dev/db/table/resource","policyType":0,"policyPriority":0,"isAuditEnabled":true,"resources":{"url":{"values":["hdfs://localhost/dev/db/table/resource"],"isExcludes":false,"isRecursive":true}},"policyItems":[{"accesses":[{"type":"alter","isAllowed":true},{"type":"drop","isAllowed":true},{"type":"select","isAllowed":true},{"type":"create","isAllowed":true},{"type":"update","isAllowed":true},{"type":"lock","isAllowed":true},{"type":"all","isAllowed":true},{"type":"alter","isAllowed":true},{"type":"drop","isAllowed":true},{"type":"select","isAllowed":true},{"type":"create","isAllowed":true},{"type":"update","isAllowed":true},{"type":"lock","isAllowed":true},{"type":"all","isAllowed":true}],"users":[],"groups":["public"],"roles":[],"conditions":[],"delegateAdmin":true}],"denyPolicyItems":[],"allowExceptions":[],"d
enyExceptions":[{"accesses":[{"type":"alter","isAllowed":true},{"type":"drop","isAllowed":true},{"type":"select","isAllowed":true},{"type":"create","isAllowed":true},{"type":"update","isAllowed":true},{"type":"lock","isAllowed":true},{"type":"all","isAllowed":true},{"type":"alter","isAllowed":true},{"type":"drop","isAllowed":true},{"type":"select","isAllowed":true},{"type":"create","isAllowed":true},{"type":"update","isAllowed":true},{"type":"lock","isAllowed":true},{"type":"all","isAllowed":true}],"users":[],"groups":["public"],"roles":[],"conditions":[],"delegateAdmin":true}],"dataMaskPolicyItems":[],"rowFilterPolicyItems":[],"serviceType":"hive","options":{},"validitySchedules":[],"policyLabels":[],"zoneName":"","isDenyAllElse":false}'
2. make a curl request to get the policy and compare the json. json content
will be having the duplicate entries of access permissions as provided in the
create policy request.
**Proposed solution:**
Option-1: Since policy validation is done before policy creation, hence during
validation phase we can filter out duplicate access permissions.
Option-2: Add a validation to detect duplicate entries of access-permissions
and if there are any duplicate entries then fail the policy request.
I have provided the patch with option-1 mentioned above.
Diffs
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agents-common/src/main/java/org/apache/ranger/plugin/model/validation/RangerPolicyValidator.java
fb6556b59
Diff: https://reviews.apache.org/r/73981/diff/1/
Testing
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With patch tested the create policy request with duplicate access-permissions
entries, policy was created successfully and get request is not having
duplicate access-permissions entries.
With patch tested the update policy request with duplicate access-permissions
entries, policy was updated successfully and get request is not having
duplicate access-permissions entries.
Thanks,
Pradeep Agrawal
