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authorAlex Auvolat <alex@adnab.me>2018-07-03 15:42:17 +0200
committerAlex Auvolat <alex@adnab.me>2018-07-03 15:42:17 +0200
commit8f3009715ee9ccdd7ecb54fea1244a32a29b62c0 (patch)
tree416fb96c39effa4217864bb6a93243803ba8edba
downloadshard-8f3009715ee9ccdd7ecb54fea1244a32a29b62c0.tar.gz
shard-8f3009715ee9ccdd7ecb54fea1244a32a29b62c0.zip
Initialize shard repo with code from somewhere
-rw-r--r--.formatter.exs4
-rw-r--r--.gitignore26
-rw-r--r--README.md16
-rw-r--r--config/config.exs30
-rw-r--r--lib/app/chat.ex21
-rw-r--r--lib/application.ex33
-rw-r--r--lib/cli/cli.ex30
-rw-r--r--lib/data/merklelist.ex136
-rw-r--r--lib/identity.ex32
-rw-r--r--lib/net/tcpconn.ex134
-rw-r--r--lib/net/tcpserver.ex35
-rw-r--r--lib/web/httprouter.ex53
-rw-r--r--mix.exs33
-rw-r--r--mix.lock9
-rw-r--r--test/conn_test.exs47
-rw-r--r--test/mkllst_test.exs15
-rw-r--r--test/test_helper.exs1
17 files changed, 655 insertions, 0 deletions
diff --git a/.formatter.exs b/.formatter.exs
new file mode 100644
index 0000000..525446d
--- /dev/null
+++ b/.formatter.exs
@@ -0,0 +1,4 @@
+# Used by "mix format"
+[
+ inputs: ["mix.exs", "{config,lib,test}/**/*.{ex,exs}"]
+]
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ed31458
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,26 @@
+# The directory Mix will write compiled artifacts to.
+/_build/
+
+# If you run "mix test --cover", coverage assets end up here.
+/cover/
+
+# The directory Mix downloads your dependencies sources to.
+/deps/
+
+# Where 3rd-party dependencies like ExDoc output generated docs.
+/doc/
+
+# Ignore .fetch files in case you like to edit your project deps locally.
+/.fetch
+
+# If the VM crashes, it generates a dump, let's ignore it too.
+erl_crash.dump
+
+# Also ignore archive artifacts (built via "mix archive.build").
+*.ez
+
+# Ignore package tarball (built via "mix hex.build").
+shard-*.tar
+
+# vim files
+*.swp
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..7abb1ce
--- /dev/null
+++ b/README.md
@@ -0,0 +1,16 @@
+# Shard
+
+Tests of peer-to-peer stuff. Right now it's a little chat application with replication of message history over peers. Nothing is secure, contrary to the name of the project.
+
+## Installation
+
+Download and install [Elixir](https://elixir-lang.org/).
+
+```
+mix deps.get
+mix compile
+mix run --no-halt
+```
+
+P2P port is 4044 by default, can be changed by setting the `$PORT` environment variable. HTTP interface is on port `$PORT`+1000.
+
diff --git a/config/config.exs b/config/config.exs
new file mode 100644
index 0000000..3139220
--- /dev/null
+++ b/config/config.exs
@@ -0,0 +1,30 @@
+# This file is responsible for configuring your application
+# and its dependencies with the aid of the Mix.Config module.
+use Mix.Config
+
+# This configuration is loaded before any dependency and is restricted
+# to this project. If another project depends on this project, this
+# file won't be loaded nor affect the parent project. For this reason,
+# if you want to provide default values for your application for
+# 3rd-party users, it should be done in your "mix.exs" file.
+
+# You can configure your application as:
+#
+# config :shard, key: :value
+#
+# and access this configuration in your application as:
+#
+# Application.get_env(:shard, :key)
+#
+# You can also configure a 3rd-party app:
+#
+# config :logger, level: :info
+#
+
+# It is also possible to import configuration files, relative to this
+# directory. For example, you can emulate configuration per environment
+# by uncommenting the line below and defining dev.exs, test.exs and such.
+# Configuration from the imported file will override the ones defined
+# here (which is why it is important to import them last).
+#
+# import_config "#{Mix.env}.exs"
diff --git a/lib/app/chat.ex b/lib/app/chat.ex
new file mode 100644
index 0000000..4a56085
--- /dev/null
+++ b/lib/app/chat.ex
@@ -0,0 +1,21 @@
+defmodule SApp.Chat do
+ def send(msg) do
+ msgitem = {(System.os_time :seconds),
+ Shard.Identity.get_nickname(),
+ msg}
+ GenServer.cast(SApp.Chat.Log, {:insert, msgitem})
+
+ SNet.ConnSupervisor
+ |> DynamicSupervisor.which_children
+ |> Enum.each(fn {_, pid, _, _} -> GenServer.cast(pid, :init_push) end)
+ end
+
+ def msg_callback({ts, nick, msg}) do
+ IO.puts "#{ts |> DateTime.from_unix! |> DateTime.to_iso8601} <#{nick}> #{msg}"
+ end
+
+ def msg_cmp({ts1, nick1, msg1}, {ts2, nick2, msg2}) do
+ SData.MerkleList.cmp_ts_str({ts1, nick1<>"|"<>msg1},
+ {ts2, nick2<>"|"<>msg2})
+ end
+end
diff --git a/lib/application.ex b/lib/application.ex
new file mode 100644
index 0000000..a199e6c
--- /dev/null
+++ b/lib/application.ex
@@ -0,0 +1,33 @@
+defmodule Shard.Application do
+ @moduledoc """
+ Documentation for Shard.
+ """
+
+ use Application
+
+ def start(_type, _args) do
+ import Supervisor.Spec, warn: false
+
+ {listen_port, _} = Integer.parse ((System.get_env "PORT") || "4044")
+
+ # Define workers and child supervisors to be supervised
+ children = [
+ Shard.Identity,
+
+ # Networking
+ { DynamicSupervisor, strategy: :one_for_one, name: SNet.ConnSupervisor },
+ { SNet.TCPServer, listen_port },
+
+ # Applications & data store
+ { SData.MerkleList, [&SApp.Chat.msg_cmp/2, name: SApp.Chat.Log] },
+
+ # Web UI
+ Plug.Adapters.Cowboy.child_spec(:http, SWeb.HTTPRouter, [], port: listen_port + 1000)
+ ]
+
+ # See http://elixir-lang.org/docs/stable/elixir/Supervisor.html
+ # for other strategies and supported options
+ opts = [strategy: :one_for_one, name: Shard.Supervisor]
+ Supervisor.start_link(children, opts)
+ end
+end
diff --git a/lib/cli/cli.ex b/lib/cli/cli.ex
new file mode 100644
index 0000000..4643351
--- /dev/null
+++ b/lib/cli/cli.ex
@@ -0,0 +1,30 @@
+defmodule SCLI do
+ def run() do
+ str = "say: " |> IO.gets |> String.trim
+ cond do
+ str == "/quit" ->
+ nil
+ String.slice(str, 0..0) == "/" ->
+ command = str |> String.slice(1..-1) |> String.split(" ")
+ handle_command(command)
+ run()
+ true ->
+ SApp.Chat.send(str)
+ run()
+ end
+ end
+
+ def handle_command(["connect", ipstr, portstr]) do
+ {:ok, ip} = :inet.parse_address (to_charlist ipstr)
+ {port, _} = Integer.parse portstr
+ SNet.TCPServer.add_peer(ip, port)
+ end
+
+ def handle_command(["nick", nick]) do
+ Shard.Identity.set_nickname nick
+ end
+
+ def handle_command(_cmd) do
+ IO.puts "Invalid command"
+ end
+end
diff --git a/lib/data/merklelist.ex b/lib/data/merklelist.ex
new file mode 100644
index 0000000..c9e27f6
--- /dev/null
+++ b/lib/data/merklelist.ex
@@ -0,0 +1,136 @@
+defmodule SData.MerkleList do
+ use GenServer
+
+ def start_link([cmp, name: name]) do
+ GenServer.start_link(__MODULE__, cmp, [name: name])
+ end
+
+ defp term_hash(term) do
+ :crypto.hash(:sha256, (:erlang.term_to_binary term))
+ end
+
+ @doc """
+ Initialize a Merkle List storage.
+ `cmp` is a function that compares stored items and provides a total order.
+
+ It must return:
+ - `:after` if the first argument is more recent
+ - `:duplicate` if the two items are the same
+ - `:before` if the first argument is older
+ """
+ def init(cmp) do
+ root_item = :root
+ root_hash = term_hash root_item
+ state = %{
+ root: root_hash,
+ top: root_hash,
+ cmp: cmp,
+ store: %{ root_hash => root_item }
+ }
+ {:ok, state}
+ end
+
+ defp state_push(item, state) do
+ new_item = {item, state.top}
+ new_item_hash = term_hash new_item
+ new_store = Map.put(state.store, new_item_hash, new_item)
+ %{ state | :top => new_item_hash, :store => new_store }
+ end
+
+ defp state_pop(state) do
+ if state.top == state.root do
+ :error
+ else
+ {item, next} = Map.get(state.store, state.top)
+ new_store = Map.delete(state.store, state.top)
+ new_state = %{ state | :top => next, :store => new_store }
+ {:ok, item, new_state}
+ end
+ end
+
+ defp insert_many(state, [], _callback) do
+ state
+ end
+
+ defp insert_many(state, [item | rest], callback) do
+ case state_pop(state) do
+ :error ->
+ new_state = state_push(item, insert_many(state, rest, callback))
+ callback.(item)
+ new_state
+ {:ok, front, state_rest} ->
+ case state.cmp.(item, front) do
+ :after ->
+ new_state = state_push(item, insert_many(state, rest, callback))
+ callback.(item)
+ new_state
+ :duplicate -> insert_many(state, rest, callback)
+ :before -> state_push(front, insert_many(state_rest, [item | rest], callback))
+ end
+ end
+ end
+
+ def handle_cast({:insert, item}, state) do
+ handle_cast({:insert_many, [item]}, state)
+ end
+
+ def handle_cast({:insert_many, items}, state) do
+ handle_cast({:insert_many, items, fn _ -> nil end}, state)
+ end
+
+ def handle_cast({:insert_many, items, callback}, state) do
+ items_sorted = Enum.sort(items, fn (x, y) -> state.cmp.(x, y) == :after end)
+ new_state = insert_many(state, items_sorted, callback)
+ {:noreply, new_state}
+ end
+
+ def handle_call({:read, qbegin, qlimit}, _from, state) do
+ begin = qbegin || state.top
+ limit = qlimit || 20
+ items = get_items_list(state, begin, limit)
+ {:reply, items, state}
+ end
+
+ def handle_call(:top, _from, state) do
+ {:reply, state.top, state}
+ end
+
+ def handle_call(:root, _from, state) do
+ {:reply, state.root, state}
+ end
+
+ def handle_call({:has, hash}, _from, state) do
+ {:reply, Map.has_key?(state.store, hash), state}
+ end
+
+ defp get_items_list(state, begin, limit) do
+ case limit do
+ 0 -> {:ok, [], begin}
+ _ ->
+ case Map.fetch(state.store, begin) do
+ {:ok, :root} ->
+ {:ok, [], nil }
+ {:ok, {item, next}} ->
+ case get_items_list(state, next, limit - 1) do
+ {:ok, rest, past} ->
+ {:ok, [ item | rest ], past }
+ {:error, reason} -> {:error, reason}
+ end
+ :error -> {:error, begin}
+ end
+ end
+ end
+
+ @doc """
+ Compare function for timestamped strings
+ """
+ def cmp_ts_str({ts1, str1}, {ts2, str2}) do
+ cond do
+ ts1 > ts2 -> :after
+ ts1 < ts2 -> :before
+ str1 == str2 -> :duplicate
+ str1 > str2 -> :after
+ str1 < str2 -> :before
+ end
+ end
+end
diff --git a/lib/identity.ex b/lib/identity.ex
new file mode 100644
index 0000000..229d6c7
--- /dev/null
+++ b/lib/identity.ex
@@ -0,0 +1,32 @@
+defmodule Shard.Identity do
+ use Agent
+ require Salty.Sign.Ed25519, as: Sign
+
+ def start_link(_) do
+ Agent.start_link(__MODULE__, :init, [], name: __MODULE__)
+ end
+
+ def init() do
+ {:ok, pk, sk} = Sign.keypair
+ nick_suffix = pk
+ |> binary_part(0, 3)
+ |> Base.encode16
+ |> String.downcase
+ %{
+ keypair: {pk, sk},
+ nickname: "Anon" <> nick_suffix,
+ }
+ end
+
+ def get_keypair() do
+ Agent.get(__MODULE__, &(&1.keypair))
+ end
+
+ def get_nickname() do
+ Agent.get(__MODULE__, &(&1.nickname))
+ end
+
+ def set_nickname(newnick) do
+ Agent.update(__MODULE__, &(%{&1 | nickname: newnick}))
+ end
+end
diff --git a/lib/net/tcpconn.ex b/lib/net/tcpconn.ex
new file mode 100644
index 0000000..5d6c912
--- /dev/null
+++ b/lib/net/tcpconn.ex
@@ -0,0 +1,134 @@
+defmodule SNet.TCPConn do
+ use GenServer, restart: :temporary
+ require Salty.Box.Curve25519xchacha20poly1305, as: Box
+ require Salty.Sign.Ed25519, as: Sign
+ require Logger
+
+ def start_link(state) do
+ GenServer.start_link(__MODULE__, state)
+ end
+
+ def init(state) do
+ GenServer.cast(self(), :handshake)
+ {:ok, state}
+ end
+
+ def handle_call(:get_host_str, _from, state) do
+ {:reply, "#{state.his_pkey|>Base.encode16|>String.downcase}@#{to_string(:inet_parse.ntoa(state.addr))}:#{state.port}", state}
+ end
+
+ def handle_cast(:handshake, state) do
+ socket = state.socket
+
+ {srv_pkey, srv_skey} = Shard.Identity.get_keypair
+ {:ok, sess_pkey, sess_skey} = Box.keypair
+ {:ok, challenge} = Salty.Random.buf 32
+
+ # Exchange public keys and challenge
+ :gen_tcp.send(socket, srv_pkey <> sess_pkey <> challenge)
+ {:ok, pkt} = :gen_tcp.recv(socket, 0)
+ cli_pkey = binary_part(pkt, 0, Sign.publickeybytes)
+ cli_sess_pkey = binary_part(pkt, Sign.publickeybytes, Box.publickeybytes)
+ cli_challenge = binary_part(pkt, Sign.publickeybytes + Box.publickeybytes, 32)
+
+ # Do challenge and check their challenge
+ {:ok, cli_challenge_sign} = Sign.sign_detached(cli_challenge, srv_skey)
+ pkt = encode_pkt(cli_challenge_sign, cli_sess_pkey, sess_skey)
+ :gen_tcp.send(socket, pkt)
+
+ {:ok, pkt} = :gen_tcp.recv(socket, 0)
+ challenge_sign = decode_pkt(pkt, cli_sess_pkey, sess_skey)
+ :ok = Sign.verify_detached(challenge_sign, challenge, cli_pkey)
+
+ # Connected
+ :inet.setopts(socket, [active: true])
+
+ {:ok, {addr, port}} = :inet.peername socket
+ state =%{ socket: socket,
+ my_pkey: srv_pkey,
+ my_skey: srv_skey,
+ his_pkey: cli_pkey,
+ conn_my_pkey: sess_pkey,
+ conn_my_skey: sess_skey,
+ conn_his_pkey: cli_sess_pkey,
+ addr: addr,
+ port: port
+ }
+ Logger.info "New peer: #{print_id state} at #{inspect addr}:#{port}"
+
+ GenServer.cast(self(), :init_push)
+
+ {:noreply, state}
+ end
+
+ def handle_cast({:send_msg, msg}, state) do
+ send_msg(state, msg)
+ {:noreply, state}
+ end
+
+ def handle_cast(:init_push, state) do
+ push_messages(state, nil, 10)
+ {:noreply, state}
+ end
+
+ defp encode_pkt(pkt, pk, sk) do
+ {:ok, n} = Salty.Random.buf Box.noncebytes
+ {:ok, msg} = Box.easy(pkt, n, pk, sk)
+ n <> msg
+ end
+
+ defp decode_pkt(pkt, pk, sk) do
+ n = binary_part(pkt, 0, Box.noncebytes)
+ enc = binary_part(pkt, Box.noncebytes, (byte_size pkt) - Box.noncebytes)
+ {:ok, msg} = Box.open_easy(enc, n, pk, sk)
+ msg
+ end
+
+ defp send_msg(state, msg) do
+ msgbin = :erlang.term_to_binary msg
+ enc = encode_pkt(msgbin, state.conn_his_pkey, state.conn_my_skey)
+ :gen_tcp.send(state.socket, enc)
+ end
+
+ def handle_info({:tcp, _socket, raw_data}, state) do
+ msg = decode_pkt(raw_data, state.conn_his_pkey, state.conn_my_skey)
+ handle_packet(:erlang.binary_to_term(msg, [:safe]), state)
+ {:noreply, state}
+ end
+
+ def handle_info({:tcp_closed, _socket}, state) do
+ Logger.info "Disconnected: #{print_id state} at #{inspect state.addr}:#{state.port}"
+ exit(:normal)
+ end
+
+ defp push_messages(state, start, num) do
+ case GenServer.call(SApp.Chat.Log, {:read, start, num}) do
+ {:ok, list, rest} ->
+ send_msg(state, {:info, start, list, rest})
+ _ -> nil
+ end
+ end
+
+ defp handle_packet(msg, state) do
+ # Logger.info "Message: #{inspect msg}"
+ case msg do
+ :get_top -> push_messages(state, nil, 10)
+ {:get, start} -> push_messages(state, start, 20)
+ {:info, _start, list, rest} ->
+ if rest != nil and not GenServer.call(SApp.Chat.Log, {:has, rest}) do
+ send_msg(state, {:get, rest})
+ end
+ spawn_link(fn ->
+ Process.sleep 1000
+ GenServer.cast(SApp.Chat.Log, {:insert_many, list, &SApp.Chat.msg_callback/1})
+ end)
+ end
+ end
+
+ defp print_id(state) do
+ state.his_pkey
+ |> binary_part(0, 8)
+ |> Base.encode16
+ |> String.downcase
+ end
+end
diff --git a/lib/net/tcpserver.ex b/lib/net/tcpserver.ex
new file mode 100644
index 0000000..e5ee996
--- /dev/null
+++ b/lib/net/tcpserver.ex
@@ -0,0 +1,35 @@
+defmodule SNet.TCPServer do
+ require Logger
+ use Task, restart: :permanent
+
+ def start_link(port) do
+ Task.start_link(__MODULE__, :accept, [port])
+ end
+
+
+ @doc """
+ Starts accepting connections on the given `port`.
+ """
+ def accept(port) do
+ {:ok, socket} = :gen_tcp.listen(port,
+ [:binary, packet: 2, active: false, reuseaddr: true])
+ Logger.info "Accepting connections on port #{port}"
+ loop_acceptor(socket)
+ end
+
+ defp loop_acceptor(socket) do
+ {:ok, client} = :gen_tcp.accept(socket)
+ {:ok, pid} = DynamicSupervisor.start_child(SNet.ConnSupervisor, {SNet.TCPConn, %{socket: client}})
+ :ok = :gen_tcp.controlling_process(client, pid)
+ loop_acceptor(socket)
+ end
+
+ def add_peer(ip, port) do
+ {:ok, client} = :gen_tcp.connect(ip, port, [:binary, packet: 2, active: false])
+ {:ok, pid} = DynamicSupervisor.start_child(SNet.ConnSupervisor, {SNet.TCPConn, %{socket: client}})
+ :ok = :gen_tcp.controlling_process(client, pid)
+ pid
+ end
+
+end
+
diff --git a/lib/web/httprouter.ex b/lib/web/httprouter.ex
new file mode 100644
index 0000000..5027df4
--- /dev/null
+++ b/lib/web/httprouter.ex
@@ -0,0 +1,53 @@
+defmodule SWeb.HTTPRouter do
+ use Plug.Router
+ use Plug.ErrorHandler
+
+ plug Plug.Parsers, parsers: [:urlencoded, :multipart]
+
+ plug :match
+ plug :dispatch
+
+ get "/" do
+ main_page(conn)
+ end
+
+ post "/" do
+ if Map.has_key?(conn.params, "msg") do
+ SApp.Chat.send(conn.params["msg"])
+ end
+ if Map.has_key?(conn.params, "nick") do
+ Shard.Identity.set_nickname(conn.params["nick"])
+ end
+ if Map.has_key?(conn.params, "peer") do
+ [ipstr, portstr] = String.split(conn.params["peer"], ":")
+ {:ok, ip} = :inet.parse_address (to_charlist ipstr)
+ {port, _} = Integer.parse portstr
+ SNet.TCPServer.add_peer(ip, port)
+ end
+
+ main_page(conn)
+ end
+
+ match _ do
+ send_resp(conn, 404, "Oops!")
+ end
+
+ def main_page(conn) do
+ {:ok, messages, _} = GenServer.call(SApp.Chat.Log, {:read, nil, 42})
+
+ msgtxt = messages
+ |> Enum.map(fn {ts, nick, msg} -> "#{ts |> DateTime.from_unix! |> DateTime.to_iso8601} &lt;#{nick}&gt; #{msg}\n" end)
+
+ peerlist = SNet.ConnSupervisor
+ |> DynamicSupervisor.which_children
+ |> Enum.map(fn {_, pid, _, _} -> "#{GenServer.call(pid, :get_host_str)}\n" end)
+
+ conn
+ |> put_resp_content_type("text/html")
+ |> send_resp(200, "<pre>#{msgtxt}</pre>" <>
+ "<form method=POST><input type=text name=msg /><input type=submit value=send /></form>" <>
+ "<form method=POST><input type=text name=nick value=\"#{Shard.Identity.get_nickname}\" /><input type=submit value=\"change nick\" /></form>" <>
+ "<hr/><pre>#{peerlist}</pre>" <>
+ "<form method=POST><input type=text name=peer /><input type=submit value=\"add peer\" /></form>")
+ end
+end
diff --git a/mix.exs b/mix.exs
new file mode 100644
index 0000000..3486509
--- /dev/null
+++ b/mix.exs
@@ -0,0 +1,33 @@
+defmodule Shard.MixProject do
+ use Mix.Project
+
+ def project do
+ [
+ app: :shard,
+ version: "0.1.0",
+ elixir: "~> 1.6",
+ build_embedded: Mix.env == :prod,
+ start_permanent: Mix.env() == :prod,
+ deps: deps()
+ ]
+ end
+
+ # Run "mix help compile.app" to learn about applications.
+ def application do
+ [
+ extra_applications: [:logger],
+ mod: {Shard.Application, []}
+ ]
+ end
+
+ # Run "mix help deps" to learn about dependencies.
+ defp deps do
+ [
+ # {:dep_from_hexpm, "~> 0.3.0"},
+ # {:dep_from_git, git: "https://github.com/elixir-lang/my_dep.git", tag: "0.1.0"},
+ {:cowboy, "~> 1.1.2"},
+ {:plug, "~> 1.3.4"},
+ {:salty, "~> 0.1.3", hex: :libsalty}
+ ]
+ end
+end
diff --git a/mix.lock b/mix.lock
new file mode 100644
index 0000000..110ecd7
--- /dev/null
+++ b/mix.lock
@@ -0,0 +1,9 @@
+%{
+ "cowboy": {:hex, :cowboy, "1.1.2", "61ac29ea970389a88eca5a65601460162d370a70018afe6f949a29dca91f3bb0", [:rebar3], [{:cowlib, "~> 1.0.2", [hex: :cowlib, repo: "hexpm", optional: false]}, {:ranch, "~> 1.3.2", [hex: :ranch, repo: "hexpm", optional: false]}], "hexpm"},
+ "cowlib": {:hex, :cowlib, "1.0.2", "9d769a1d062c9c3ac753096f868ca121e2730b9a377de23dec0f7e08b1df84ee", [:make], [], "hexpm"},
+ "elixir_make": {:hex, :elixir_make, "0.4.2", "332c649d08c18bc1ecc73b1befc68c647136de4f340b548844efc796405743bf", [:mix], [], "hexpm"},
+ "mime": {:hex, :mime, "1.3.0", "5e8d45a39e95c650900d03f897fbf99ae04f60ab1daa4a34c7a20a5151b7a5fe", [:mix], [], "hexpm"},
+ "plug": {:hex, :plug, "1.3.6", "bcdf94ac0f4bc3b804bdbdbde37ebf598bd7ed2bfa5106ed1ab5984a09b7e75f", [:mix], [{:cowboy, "~> 1.0.1 or ~> 1.1", [hex: :cowboy, repo: "hexpm", optional: true]}, {:mime, "~> 1.0", [hex: :mime, repo: "hexpm", optional: false]}], "hexpm"},
+ "ranch": {:hex, :ranch, "1.3.2", "e4965a144dc9fbe70e5c077c65e73c57165416a901bd02ea899cfd95aa890986", [:rebar3], [], "hexpm"},
+ "salty": {:hex, :libsalty, "0.1.3", "13332eb13ac995f5deb76903b44f96f740e1e3a6e511222bffdd8b42cd079ffb", [:make, :mix], [{:elixir_make, "~> 0.4", [hex: :elixir_make, repo: "hexpm", optional: false]}], "hexpm"},
+}
diff --git a/test/conn_test.exs b/test/conn_test.exs
new file mode 100644
index 0000000..48c92f8
--- /dev/null
+++ b/test/conn_test.exs
@@ -0,0 +1,47 @@
+defmodule ShardTest.Conn do
+ use ExUnit.Case
+ doctest Shard.Application
+
+ require Salty.Box.Curve25519xchacha20poly1305, as: Box
+ require Salty.Sign.Ed25519, as: Sign
+
+ test "the truth" do
+ assert 1 + 1 == 2
+ end
+
+ test "crypto connection" do
+ {:ok, srv_pkey, srv_skey} = Sign.keypair
+ {:ok, sess_pkey, sess_skey} = Box.keypair
+ {:ok, challenge} = Salty.Random.buf 32
+ {:ok, socket} = :gen_tcp.connect {127,0,0,1}, 4044, [:binary, packet: 2, active: false]
+
+ :gen_tcp.send(socket, srv_pkey <> sess_pkey <> challenge)
+ {:ok, pkt} = :gen_tcp.recv(socket, 0)
+ cli_pkey = binary_part(pkt, 0, Sign.publickeybytes)
+ cli_sess_pkey = binary_part(pkt, Sign.publickeybytes, Box.publickeybytes)
+ cli_challenge = binary_part(pkt, Sign.publickeybytes + Box.publickeybytes, 32)
+
+ {:ok, cli_challenge_sign} = Sign.sign_detached(cli_challenge, srv_skey)
+ sendmsg(socket, cli_challenge_sign, cli_sess_pkey, sess_skey)
+
+ challenge_sign = recvmsg(socket, cli_sess_pkey, sess_skey)
+ :ok = Sign.verify_detached(challenge_sign, challenge, cli_pkey)
+
+ pkt = :erlang.binary_to_term(recvmsg(socket, cli_sess_pkey, sess_skey), [:safe])
+ IO.puts (inspect pkt)
+ end
+
+ defp sendmsg(sock, msg, pk, sk) do
+ {:ok, n} = Salty.Random.buf Box.noncebytes
+ {:ok, msg} = Box.easy(msg, n, pk, sk)
+ :gen_tcp.send(sock, n <> msg)
+ end
+
+ defp recvmsg(sock, pk, sk) do
+ {:ok, pkt} = :gen_tcp.recv(sock, 0)
+ n = binary_part(pkt, 0, Box.noncebytes)
+ enc = binary_part(pkt, Box.noncebytes, (byte_size pkt) - Box.noncebytes)
+ {:ok, msg} = Box.open_easy(enc, n, pk, sk)
+ msg
+ end
+end
diff --git a/test/mkllst_test.exs b/test/mkllst_test.exs
new file mode 100644
index 0000000..7d1fadf
--- /dev/null
+++ b/test/mkllst_test.exs
@@ -0,0 +1,15 @@
+defmodule ShardTest.MklLst do
+ use ExUnit.Case
+ doctest Shard.Application
+
+ test "merkle list" do
+ {:ok, pid} = GenServer.start(SData.MerkleList, &SData.MerkleList.cmp_ts_str/2)
+
+ {:ok, list, rt} = GenServer.call(pid, {:read, nil, nil})
+ assert list == []
+ assert rt == nil
+
+ GenServer.cast(pid, {:insert, {12, "aa, bb"}})
+ GenServer.cast(pid, {:insert_many, [{14, "qwerty"}, {8, "haha"}]})
+ end
+end
diff --git a/test/test_helper.exs b/test/test_helper.exs
new file mode 100644
index 0000000..869559e
--- /dev/null
+++ b/test/test_helper.exs
@@ -0,0 +1 @@
+ExUnit.start()