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digest algorithm is taken from header

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Alexander Strizhakov 2020-11-26 11:12:44 +03:00
commit 6aadb1cb40
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2 changed files with 64 additions and 2 deletions
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18
lib/pleroma/web/plugs/digest_plug.ex
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@ -7,8 +7,22 @@ defmodule Pleroma.Web.Plugs.DigestPlug do
require Logger
def read_body(conn, opts) do
digest_algorithm =
with [digest_header] <- Conn.get_req_header(conn, "digest") do
digest_header
|> String.split("=", parts: 2)
|> List.first()
else
_ -> "SHA-256"
end
unless String.downcase(digest_algorithm) == "sha-256" do
raise ArgumentError,
message: "invalid value for digest algorithm, got: #{digest_algorithm}"
end
{:ok, body, conn} = Conn.read_body(conn, opts)
digest = "SHA-256=" <> (:crypto.hash(:sha256, body) |> Base.encode64())
{:ok, body, Conn.assign(conn, :digest, digest)}
encoded_digest = :crypto.hash(:sha256, body) |> Base.encode64()
{:ok, body, Conn.assign(conn, :digest, "#{digest_algorithm}=#{encoded_digest}")}
end
end