Merge branch 'master' of github.com:danielberkompas/ex_twilio

.semaphore/semaphore.yml

@@ -0,0 +1,36 @@
+version: v1.0
+name: CI Build
+agent:
+  machine:
+    type: e1-standard-2
+    os_image: ubuntu1804
+auto_cancel:
+  running:
+    when: 'true'
+fail_fast:
+  stop:
+    when: 'true'
+blocks:
+  - name: Build
+    dependencies: []
+    task:
+      env_vars:
+        - name: MIX_ENV
+          value: test
+      secrets:
+        - name: ex-twilio-env
+      jobs:
+        - name: Build
+          matrix:
+            - env_var: ELIXIR_VERSION
+              values:
+                - 1.11.3
+          commands:
+            - sem-version elixir $ELIXIR_VERSION
+            - checkout
+            - cache restore
+            - mix local.hex --force
+            - mix local.rebar --force
+            - mix deps.get
+            - bin/test
+            - cache store

README.md

@@ -1,7 +1,7 @@
 ExTwilio
 ========
 [![Hex.pm](https://img.shields.io/hexpm/v/ex_twilio.svg)](https://hex.pm/packages/ex_twilio)
-[![Build Status](https://travis-ci.org/danielberkompas/ex_twilio.svg?branch=master)](https://travis-ci.org/danielberkompas/ex_twilio)
+[![Build Status](https://danielberkompas.semaphoreci.com/badges/ex_twilio/branches/master.svg?style=shields)](https://danielberkompas.semaphoreci.com/projects/ex_twilio)
 [![Inline docs](http://inch-ci.org/github/danielberkompas/ex_twilio.svg?branch=master)](http://inch-ci.org/github/danielberkompas/ex_twilio)
 [![Deps Status](https://beta.hexfaktor.org/badge/all/github/danielberkompas/ex_twilio.svg)](https://beta.hexfaktor.org/github/danielberkompas/ex_twilio)
 

lib/ex_twilio/request_validator.ex

@@ -32,7 +32,14 @@ defmodule ExTwilio.RequestValidator do
     |> Enum.join()
   end
 
-  defp compute_hmac(data, key), do: :crypto.hmac(:sha, key, data)
+  defp compute_hmac(data, key), do: hmac(:sha, key, data)
+
+  # TODO: remove when we require OTP 22
+  if System.otp_release() >= "22" do
+    defp hmac(digest, key, data), do: :crypto.mac(:hmac, digest, key, data)
+  else
+    defp hmac(digest, key, data), do: :crypto.hmac(digest, key, data)
+  end
 
   # Implementation taken from Plug.Crypto
   # https://github.com/elixir-plug/plug/blob/master/lib/plug/crypto.ex
@@ -48,7 +55,7 @@ defmodule ExTwilio.RequestValidator do
   end
 
   defp secure_compare(<<x, left::binary>>, <<y, right::binary>>, acc) do
-    xorred = x ^^^ y
+    xorred = bxor(x, y)
     secure_compare(left, right, acc ||| xorred)
   end