34 lines
1 KiB
Elixir
34 lines
1 KiB
Elixir
defmodule Floof.Message do
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@moduledoc """
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Utility methods to deal with generating and emitting of messages
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"""
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def emit(xf) do
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{:XferBlob, _, _, _, xfinner} = xf
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mhash = :crypto.hash(:blake2b, xfinner)
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GenServer.cast(Floof.Distributor, {:xfer, {self(), mhash, xf}})
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mhash
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end
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def sign(xf, secret_key) do
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{:XferBlob, ttl, markers, _, xfinner} = xf
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public_key = :enacl.crypto_sign_ed25519_sk_to_pk(secret_key)
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signature = :enacl.sign_detached(xfinner, secret_key)
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signature2 = {:Signature, {1, 3, 6, 1, 4, 1, 11591, 15, 1}, public_key, signature}
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{:XferBlob, ttl, markers, signature2, xfinner}
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end
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def pack_inner(topic, attrs, severity, data) do
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# make sure that attrs is ordered to ensure proper repr
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attrs = :ordsets.to_list(:ordsets.from_list(attrs))
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{:ok, data} = :FloofProtocol.encode(:XferInner, {:XferInner, topic, attrs, severity, data})
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data
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end
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def build_outer(ttl, markers, secret_key, xfinner) do
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{:XferBlob, ttl, markers, nil, xfinner} |> sign(secret_key)
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end
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end
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