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Pick a different instance upon redirect (#5154)

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The automatic instance redirection has the potential to pick
the same instance the user is currently on. This is especially
prevalent when the instance list is limited in number like how it is
today.

This PR checks the domain of the instance and ensures that it is not
the same as the current instane before redirecting the user to it.
Otherwise, it just sends the user to rediret.invidious.io
This commit is contained in:
syeopite
2025-02-26 14:05:21 -08:00
parent 3e329410d1 a77f083a0a
commit c5e9447f41
1 changed files with 7 additions and 2 deletions
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9
src/invidious/routes/misc.cr
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@ -42,12 +42,17 @@ module Invidious::Routes::Misc
referer = get_referer(env)
instance_list = Invidious::Jobs::InstanceListRefreshJob::INSTANCES["INSTANCES"]
if instance_list.empty?
# Filter out the current instance
other_available_instances = instance_list.reject { |_, domain| domain == CONFIG.domain }
if other_available_instances.empty?
# If the current instance is the only one, use the redirect URL as fallback
instance_url = "redirect.invidious.io"
else
# Select other random instance
# Sample returns an array
# Instances are packaged as {region, domain} in the instance list
instance_url = instance_list.sample(1)[0][1]
instance_url = other_available_instances.sample(1)[0][1]
end
env.redirect "https://#{instance_url}#{referer}"