debian-mirror-gitlab/app/controllers/concerns/sends_blob.rb

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# frozen_string_literal: true
module SendsBlob
extend ActiveSupport::Concern
included do
include BlobHelper
include SendFileUpload
end
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def send_blob(repository, blob, inline: true, allow_caching: false)
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if blob
headers['X-Content-Type-Options'] = 'nosniff'
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return if cached_blob?(blob, allow_caching: allow_caching)
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if blob.stored_externally?
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send_lfs_object(blob, repository.project)
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else
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send_git_blob(repository, blob, inline: inline)
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end
else
render_404
end
end
private
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def cached_blob?(blob, allow_caching: false)
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stale = stale?(etag: blob.id) # The #stale? method sets cache headers.
# Because we are opinionated we set the cache headers ourselves.
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response.cache_control[:public] = allow_caching
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response.cache_control[:max_age] =
if @ref && @commit && @ref == @commit.id # rubocop:disable Gitlab/ModuleWithInstanceVariables
# This is a link to a commit by its commit SHA. That means that the blob
# is immutable. The only reason to invalidate the cache is if the commit
# was deleted or if the user lost access to the repository.
Blob::CACHE_TIME_IMMUTABLE
else
# A branch or tag points at this blob. That means that the expected blob
# value may change over time.
Blob::CACHE_TIME
end
!stale
end
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def send_lfs_object(blob, project)
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lfs_object = find_lfs_object(blob)
if lfs_object && lfs_object.project_allowed_access?(project)
send_upload(lfs_object.file, attachment: blob.name)
else
render_404
end
end
def find_lfs_object(blob)
lfs_object = LfsObject.find_by_oid(blob.lfs_oid)
if lfs_object && lfs_object.file.exists?
lfs_object
else
nil
end
end
end