implement workaround for chi.RegisterMethod

[C0rby]

Description

Implement a workaround for chi.RegisterMethod for the webdav search.

Related Issue

• Fixes https://drone.owncloud.com/owncloud/ocis/11281/38/5

Motivation and Context

chi.RegisterMethod writes to a global map. Other parts of chi read that map and since we start multiple chi router in different goroutines we concurrently read/write to the map which is not valid and results in panics

How Has This Been Tested?

• test environment: locally via curl

curl -X REPORT -k https://localhost:9200/remote.php/dav/files/admin -i -u 'admin:.AT*+DatuZlfO!QS@TAyF5#EKz68fd0%'
HTTP/1.1 400 Bad Request
Cache-Control: no-cache, no-store, max-age=0, must-revalidate, value
Content-Length: 209
Content-Security-Policy: frame-ancestors 'none'
Content-Type: application/xml; charset=utf-8
Date: Tue, 03 May 2022 14:37:50 GMT
Expires: Thu, 01 Jan 1970 00:00:00 GMT
Last-Modified: Tue, 03 May 2022 14:37:50 GMT
Vary: Origin
X-Content-Type-Options: nosniff
X-Frame-Options: DENY
X-Webdav-Version: 1a0e55cc7

<?xml version="1.0" encoding="UTF-8"?>
<d:error xmlns:d="DAV" xmlns:s="http://sabredav.org/ns"><s:exception>Sabre\DAV\Exception\BadRequest</s:exception><s:message>missing search-files tag</s:message></d:error

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• Code changes

[update-docs]

Thanks for opening this pull request! The maintainers of this repository would appreciate it if you would create a changelog item based on your changes.

[sonarqubecloud]

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0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

0.0% Coverage
0.0% Duplication