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Fix confusing error when webfinger request returns empty document (#16986) 

For some reason, some misconfigured servers return an empty document when
queried over webfinger. Since an empty document does not lead to a parse
error, the error is not caught properly and triggers uncaught exceptions
later on.

This PR fixes that by immediately erroring out with `Webfinger::Error` on
getting an empty response.
main
Claire 2021-11-14 21:55:40 +01:00 committed by GitHub
parent 4b616c4f0a
commit 3517867b76
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1 changed files with 3 additions and 1 deletions
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4
app/lib/webfinger.rb
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@ -46,7 +46,9 @@ class Webfinger
def body_from_webfinger(url = standard_url, use_fallback = true) def body_from_webfinger(url = standard_url, use_fallback = true)
webfinger_request(url).perform do |res| webfinger_request(url).perform do |res|
if res.code == 200 if res.code == 200
res.body_with_limit body = res.body_with_limit
raise Webfinger::Error, "Request for #{@uri} returned empty response" if body.empty?
body
elsif res.code == 404 && use_fallback elsif res.code == 404 && use_fallback
body_from_host_meta body_from_host_meta
elsif res.code == 410 elsif res.code == 410