# Overview
This PR adds support for remote YARA queries to osquery-perf, so that
remote YARA queries can be load-tested.
# Details
The existing `runLiveQuery()` is updated to branch off into different
query running functions based on the content of the query. If the query
contains `from yara` and `sigurl`, then the new `runLiveYaraQuery()`
function is run which makes a request to the Fleet "get yara rules" API
before returning an appropriate response. Otherwise, the new
`RunLiveMockQuery()` function is run which includes the previous logic
for sending a mock response.
# Testing
I don't see any automated testing for osquery-perf, but I manually
tested in the following way:
1. Started osquery-perf with `go run agent.go`
2. Ran a live query on the new host using
```
SELECT * FROM yara where sigurl="https://localhost:8080/api/osquery/yara/rule1.yar"
```
and verified that the result was as-expected:
<img width="1642" alt="image"
src="https://github.com/user-attachments/assets/a2c9cacf-e28d-409c-8e83-1c82809b89c0"
/>
I also used a log in Fleet to verify that the "get yara rules" API was
really being called.
3. Ran another live query on the host using:
```
SELECT * FROM system_info"
```
and verified that the result was as expected:
<img width="1665" alt="image"
src="https://github.com/user-attachments/assets/a8d35389-f193-4902-badf-200d760fdf46"
/>
I also tested that sending a `sigurl` with the wrong host returns a
`live yara query failed because sigurl host did not match server
address` error
# Checklist for submitter
<!-- Note that API documentation changes are now addressed by the
product design team. -->
- [X] Added support on fleet's osquery simulator `cmd/osquery-perf` for
new osquery data ingestion features.
Scott Gress
9ad246876c