Remove CAStore (#35)

Erlang/OTP 25 ships with its own certificates,
which can also be configured globally. Earlier
Erlang/OTP versions are no longer maintained.

Author: josevalim

lib/bun.ex

@@ -296,13 +296,11 @@ defmodule Bun do
     end
 
     # https://erlef.github.io/security-wg/secure_coding_and_deployment_hardening/inets
-    cacertfile = cacertfile() |> String.to_charlist()
-
     http_options =
       [
         ssl: [
           verify: :verify_peer,
-          cacertfile: cacertfile,
+          cacerts: :public_key.cacerts_get(),
           depth: 2,
           customize_hostname_check: [
             match_fun: :public_key.pkix_verify_hostname_match_fun(:https)
@@ -351,8 +349,4 @@ defmodule Bun do
       _ -> nil
     end
   end
-
-  defp cacertfile() do
-    Application.get_env(:bun, :cacerts_path) || CAStore.file_path()
-  end
 end

mix.exs

@@ -40,7 +40,6 @@ defmodule Bun.MixProject do
 
   defp deps do
     [
-      {:castore, ">= 0.0.0"},
       {:ex_doc, ">= 0.0.0", only: :dev}
     ]
   end

mix.lock

@@ -1,5 +1,4 @@
 %{
-  "castore": {:hex, :castore, "1.0.3", "7130ba6d24c8424014194676d608cb989f62ef8039efd50ff4b3f33286d06db8", [:mix], [], "hexpm", "680ab01ef5d15b161ed6a95449fac5c6b8f60055677a8e79acf01b27baa4390b"},
   "earmark_parser": {:hex, :earmark_parser, "1.4.42", "f23d856f41919f17cd06a493923a722d87a2d684f143a1e663c04a2b93100682", [:mix], [], "hexpm", "6915b6ca369b5f7346636a2f41c6a6d78b5af419d61a611079189233358b8b8b"},
   "ex_doc": {:hex, :ex_doc, "0.36.1", "4197d034f93e0b89ec79fac56e226107824adcce8d2dd0a26f5ed3a95efc36b1", [:mix], [{:earmark_parser, "~> 1.4.42", [hex: :earmark_parser, repo: "hexpm", optional: false]}, {:makeup_c, ">= 0.1.0", [hex: :makeup_c, repo: "hexpm", optional: true]}, {:makeup_elixir, "~> 0.14 or ~> 1.0", [hex: :makeup_elixir, repo: "hexpm", optional: false]}, {:makeup_erlang, "~> 0.1 or ~> 1.0", [hex: :makeup_erlang, repo: "hexpm", optional: false]}, {:makeup_html, ">= 0.1.0", [hex: :makeup_html, repo: "hexpm", optional: true]}], "hexpm", "d7d26a7cf965dacadcd48f9fa7b5953d7d0cfa3b44fa7a65514427da44eafd89"},
   "makeup": {:hex, :makeup, "1.2.1", "e90ac1c65589ef354378def3ba19d401e739ee7ee06fb47f94c687016e3713d1", [:mix], [{:nimble_parsec, "~> 1.4", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "d36484867b0bae0fea568d10131197a4c2e47056a6fbe84922bf6ba71c8d17ce"},