Android Custom Commands: Removing sensitive fields from raw_result

[ksykulev]

Checklist for submitter

Testing

• Added/updated automated tests
• QA'd all new/changed functionality manually

For unreleased bug fixes in a release candidate, one of:

• Confirmed that the fix is not expected to adversely impact load test results
• Alerted the release DRI if additional load testing is needed

 $ curl -X POST https://localhost:8080/api/latest/fleet/commands/run   -H "Authorization: Bearer /Ddu4UJaXKva1EfLa5UdM3Ho0pnSfbF57G7U1TT3rtraVIj6xuIQMutPwQCvgQFYV0qfuUCbiX/IBnrjnNz7yg=="   -H "Content-Type: application/json"   -k   -d '{
    "command": "'$(echo -n '{"type":"RESET_PASSWORD","newPassword":"1234"}' | base64)'",
    "host_uuids": ["0a22e1b251b7fe7441b9381f5a78531d259aa933a9f5e081512e95dbcefed37b"]
  }'
{
  "command_uuid": "bea5f3dd-3e1d-4a0a-9ad1-5aaa4d064a7d",
  "request_type": "RESET_PASSWORD",
  "platform": "android"
}

> SELECT command_uuid, command_type, status, raw_command, raw_result  FROM mdm_android_commands  WHERE command_uuid = 'bea5f3dd-3e1d-4a0a-9ad1-5aaa4d064a7d'\G
*************************** 1. row ***************************
command_uuid: bea5f3dd-3e1d-4a0a-9ad1-5aaa4d064a7d
command_type: RESET_PASSWORD
      status: acknowledged
 raw_command: {"duration":"315360000s","type":"RESET_PASSWORD"}
  raw_result: {"done":true,"metadata":{"@type":"type.googleapis.com/google.android.devicemanagement.v1.Command","createTime":"2026-09-04T21:17:50.970Z","duration":"315360000s","type":"RESET_PASSWORD","userName":"enterprises/LC03k6enk8/users/100440021117198030193"},"name":"enterprises/LC03k6enk8/devices/3d3ba6758a67c88b/operations/1788556670970","response":{"@type":"type.googleapis.com/google.android.devicemanagement.v1.IssueCommandResponse"}}
1 row in set (0.00 sec)

Summary by CodeRabbit

• Security

  • Sensitive Android reset-password values and metadata keys are removed from stored command results.
  • Other operation metadata remains available for troubleshooting and status tracking.
  • Sensitive values remain protected when command metadata is malformed or cannot be parsed.

• Bug Fixes

  • Redaction is applied consistently to newly completed commands and commands finalized during reconciliation.
  • Prevents sensitive data from being retained in persisted command results across completion workflows.

[Copilot]

🟡 Changes recommended

The new redaction helper currently fails open on JSON unmarshal errors, which could still allow sensitive metadata to be persisted in raw_result under malformed/partial payload conditions.

Once you've addressed the issues Copilot identified, you can request another Copilot review.

Pull request overview

This PR reduces the risk of storing Android custom-command secrets by redacting sensitive fields (specifically newPassword) from AMAPI Operation.metadata before persisting the Operation JSON into mdm_android_commands.raw_result.

Changes:

• Added redactOperationSensitiveFields to remove newPassword from Operation.metadata prior to persistence.
• Applied the redaction in both reconcile-based processing and Pub/Sub command processing paths.
• Added unit tests to ensure newPassword does not appear in stored raw_result.

File summaries

File	Description
server/mdm/android/service/service.go	Adds helper to redact sensitive fields from Operation.metadata before persisting results.
server/mdm/android/service/reconcile_commands.go	Redacts sensitive metadata before marshaling Operation into raw_result during reconciliation.
server/mdm/android/service/reconcile_commands_test.go	Adds test asserting newPassword is not stored in reconciled raw_result.
server/mdm/android/service/pubsub.go	Redacts sensitive metadata before marshaling Operation into raw_result in Pub/Sub processing.
server/mdm/android/service/pubsub_test.go	Adds test asserting newPassword is not stored in Pub/Sub raw_result.

Review details

• Files reviewed: 5/5 changed files
• Comments generated: 1
• Review effort level: Lite

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Walkthrough

Android terminal operations now remove newPassword metadata before raw results are persisted. The redaction applies to Pub/Sub command handling and Android command reconciliation. Malformed metadata is sanitized without removing unrelated metadata. Tests verify that sensitive values and keys are removed while other metadata remains.

Merge Risk: ⚪ Minimal · up to 65cc2

Android custom-command results now omit password metadata before raw results are persisted. No actionable merge-blocking risk remains in the supplied change context.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 60.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 5 functions across 5 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly identifies the main change: removing sensitive fields from Android custom command raw results.
Description check	✅ Passed	The description explains the change and includes automated testing and manual QA evidence. It omits the related issue and several template checklist sections, but those sections appear non-applicable …
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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• Commit unit tests in branch 43-custom-command

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[codecov]

Codecov Report

❌ Patch coverage is 83.33333% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 75.92%. Comparing base (5885571) to head (65cc265).
⚠️ Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
server/mdm/android/service/service.go	80.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #52621      +/-   ##
==========================================
+ Coverage   75.90%   75.92%   +0.02%     
==========================================
  Files        4101     4102       +1     
  Lines      247797   247996     +199     
  Branches    14295    14295              
==========================================
+ Hits       188078   188279     +201     
+ Misses      59543    59541       -2     
  Partials      176      176              

Flag	Coverage Δ
backend	77.60% <83.33%> (+0.02%)	⬆️

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Actionable comments posted: 1

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Inline comments:
In `@server/mdm/android/service/service.go`:
- Line 977: Update the metadata fallback around the newPassword detection to
decode JSON before checking keys, handling array-shaped metadata and escaped
keys such as \u006eewPassword; clear non-object metadata when it cannot be
safely processed, and add a regression test covering escaped newPassword keys
inside arrays.

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📥 Commits

Reviewing files that changed from the base of the PR and between 927b377 and 41f66dc.

📒 Files selected for processing (3)

• server/mdm/android/service/pubsub_test.go
• server/mdm/android/service/reconcile_commands_test.go
• server/mdm/android/service/service.go

🚧 Files skipped from review as they are similar to previous changes (2)

• server/mdm/android/service/reconcile_commands_test.go
• server/mdm/android/service/pubsub_test.go

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