config/config.exs

@@ -15,7 +15,8 @@ config :chessh, RateLimits,
   jail_attempt_threshold: 15,
   max_concurrent_user_sessions: 5,
   player_session_message_burst_ms: 500,
-  player_session_message_burst_rate: 8
+  player_session_message_burst_rate: 8,
+  player_public_keys: 15
 
 config :chessh, Web,
   port: 8080,

front/package-lock.json

@@ -15,6 +15,7 @@
         "react": "^18.2.0",
         "react-code-blocks": "^0.0.9-0",
         "react-dom": "^18.2.0",
+        "react-modal": "^3.16.1",
         "react-router-dom": "^6.6.2",
         "react-scripts": "5.0.1",
         "web-vitals": "^2.1.4"
@@ -7836,6 +7837,11 @@
         "url": "https://github.com/sindresorhus/execa?sponsor=1"
       }
     },
+    "node_modules/exenv": {
+      "version": "1.2.2",
+      "resolved": "https://registry.npmjs.org/exenv/-/exenv-1.2.2.tgz",
+      "integrity": "sha512-Z+ktTxTwv9ILfgKCk32OX3n/doe+OcLTRtqK9pcL+JsP3J1/VW8Uvl4ZjLlKqeW4rzK4oesDOGMEMRIZqtP4Iw=="
+    },
     "node_modules/exit": {
       "version": "0.1.2",
       "resolved": "https://registry.npmjs.org/exit/-/exit-0.1.2.tgz",
@@ -14533,6 +14539,29 @@
       "resolved": "https://registry.npmjs.org/react-is/-/react-is-17.0.2.tgz",
       "integrity": "sha512-w2GsyukL62IJnlaff/nRegPQR94C/XXamvMWmSHRJ4y7Ts/4ocGRmTHvOs8PSE6pB3dWOrD/nueuU5sduBsQ4w=="
     },
+    "node_modules/react-lifecycles-compat": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/react-lifecycles-compat/-/react-lifecycles-compat-3.0.4.tgz",
+      "integrity": "sha512-fBASbA6LnOU9dOU2eW7aQ8xmYBSXUIWr+UmF9b1efZBazGNO+rcXT/icdKnYm2pTwcRylVUYwW7H1PHfLekVzA=="
+    },
+    "node_modules/react-modal": {
+      "version": "3.16.1",
+      "resolved": "https://registry.npmjs.org/react-modal/-/react-modal-3.16.1.tgz",
+      "integrity": "sha512-VStHgI3BVcGo7OXczvnJN7yT2TWHJPDXZWyI/a0ssFNhGZWsPmB8cF0z33ewDXq4VfYMO1vXgiv/g8Nj9NDyWg==",
+      "dependencies": {
+        "exenv": "^1.2.0",
+        "prop-types": "^15.7.2",
+        "react-lifecycles-compat": "^3.0.0",
+        "warning": "^4.0.3"
+      },
+      "engines": {
+        "node": ">=8"
+      },
+      "peerDependencies": {
+        "react": "^0.14.0 || ^15.0.0 || ^16 || ^17 || ^18",
+        "react-dom": "^0.14.0 || ^15.0.0 || ^16 || ^17 || ^18"
+      }
+    },
     "node_modules/react-refresh": {
       "version": "0.11.0",
       "resolved": "https://registry.npmjs.org/react-refresh/-/react-refresh-0.11.0.tgz",
@@ -16620,6 +16649,14 @@
         "makeerror": "1.0.12"
       }
     },
+    "node_modules/warning": {
+      "version": "4.0.3",
+      "resolved": "https://registry.npmjs.org/warning/-/warning-4.0.3.tgz",
+      "integrity": "sha512-rpJyN222KWIvHJ/F53XSZv0Zl/accqHR8et1kpaMTD/fLCRxtV8iX8czMzY7sVZupTI3zcUTg8eycS2kNF9l6w==",
+      "dependencies": {
+        "loose-envify": "^1.0.0"
+      }
+    },
     "node_modules/watchpack": {
       "version": "2.4.0",
       "resolved": "https://registry.npmjs.org/watchpack/-/watchpack-2.4.0.tgz",
@@ -23111,6 +23148,11 @@
         "strip-final-newline": "^2.0.0"
       }
     },
+    "exenv": {
+      "version": "1.2.2",
+      "resolved": "https://registry.npmjs.org/exenv/-/exenv-1.2.2.tgz",
+      "integrity": "sha512-Z+ktTxTwv9ILfgKCk32OX3n/doe+OcLTRtqK9pcL+JsP3J1/VW8Uvl4ZjLlKqeW4rzK4oesDOGMEMRIZqtP4Iw=="
+    },
     "exit": {
       "version": "0.1.2",
       "resolved": "https://registry.npmjs.org/exit/-/exit-0.1.2.tgz",
@@ -27768,6 +27810,22 @@
       "resolved": "https://registry.npmjs.org/react-is/-/react-is-17.0.2.tgz",
       "integrity": "sha512-w2GsyukL62IJnlaff/nRegPQR94C/XXamvMWmSHRJ4y7Ts/4ocGRmTHvOs8PSE6pB3dWOrD/nueuU5sduBsQ4w=="
     },
+    "react-lifecycles-compat": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/react-lifecycles-compat/-/react-lifecycles-compat-3.0.4.tgz",
+      "integrity": "sha512-fBASbA6LnOU9dOU2eW7aQ8xmYBSXUIWr+UmF9b1efZBazGNO+rcXT/icdKnYm2pTwcRylVUYwW7H1PHfLekVzA=="
+    },
+    "react-modal": {
+      "version": "3.16.1",
+      "resolved": "https://registry.npmjs.org/react-modal/-/react-modal-3.16.1.tgz",
+      "integrity": "sha512-VStHgI3BVcGo7OXczvnJN7yT2TWHJPDXZWyI/a0ssFNhGZWsPmB8cF0z33ewDXq4VfYMO1vXgiv/g8Nj9NDyWg==",
+      "requires": {
+        "exenv": "^1.2.0",
+        "prop-types": "^15.7.2",
+        "react-lifecycles-compat": "^3.0.0",
+        "warning": "^4.0.3"
+      }
+    },
     "react-refresh": {
       "version": "0.11.0",
       "resolved": "https://registry.npmjs.org/react-refresh/-/react-refresh-0.11.0.tgz",
@@ -29304,6 +29362,14 @@
         "makeerror": "1.0.12"
       }
     },
+    "warning": {
+      "version": "4.0.3",
+      "resolved": "https://registry.npmjs.org/warning/-/warning-4.0.3.tgz",
+      "integrity": "sha512-rpJyN222KWIvHJ/F53XSZv0Zl/accqHR8et1kpaMTD/fLCRxtV8iX8czMzY7sVZupTI3zcUTg8eycS2kNF9l6w==",
+      "requires": {
+        "loose-envify": "^1.0.0"
+      }
+    },
     "watchpack": {
       "version": "2.4.0",
       "resolved": "https://registry.npmjs.org/watchpack/-/watchpack-2.4.0.tgz",

front/package.json

@@ -10,6 +10,7 @@
     "react": "^18.2.0",
     "react-code-blocks": "^0.0.9-0",
     "react-dom": "^18.2.0",
+    "react-modal": "^3.16.1",
     "react-router-dom": "^6.6.2",
     "react-scripts": "5.0.1",
     "web-vitals": "^2.1.4"

front/src/context/auth_context.js

@@ -1,4 +1,4 @@
-import React, { useContext, useState, createContext, useEffect } from "react";
+import React, { useContext, useState, createContext } from "react";
 
 export const DEFAULT_EXPIRY_TIME_MS = 12 * 60 * 60 * 1000;
 
@@ -21,63 +21,6 @@ export const AuthProvider = ({ children }) => {
   const [userId, setUserId] = useState(null);
   const [username, setUsername] = useState(null);
 
-  useEffect(() => {
-    if (userId) {
-      localStorage.setItem("userId", userId.toString());
-    }
-  }, [userId]);
-
-  useEffect(() => {
-    if (username) {
-      localStorage.setItem("username", username);
-    }
-  }, [username]);
-
-  useEffect(() => {
-    let expiry = localStorage.getItem("expiry");
-    if (expiry) {
-      expiry = new Date(expiry);
-      if (Date.now() < expiry.getTime()) {
-        setSignedIn(true);
-        setSessionOver(expiry);
-        // We don't have access to the JWT token as it is an HTTP only cookie -
-        // so we store user info in local storage
-        ((username) => {
-          if (username) {
-            setUsername(username);
-          }
-        })(localStorage.getItem("username"));
-
-        ((id) => {
-          if (id) {
-            setUserId(parseInt(id, 10));
-          }
-        })(localStorage.getItem("userId"));
-      }
-    }
-  }, []);
-
-  useEffect(() => {
-    localStorage.setItem("expiry", sessionOver.toISOString());
-    setTimeout(() => {
-      setSessionOver((sessionOver) => {
-        if (Date.now() >= sessionOver.getTime()) {
-          setSignedIn((signedIn) => {
-            if (signedIn) {
-              alert(
-                "Session expired. Any further privileged requests will fail until signed in again."
-              );
-              ["userId", "userName"].map((x) => localStorage.removeItem(x));
-              return false;
-            }
-            return signedIn;
-          });
-        }
-        return sessionOver;
-      });
-    }, sessionOver.getTime() - Date.now());
-  }, [sessionOver]);
-
   return (
     <AuthContext.Provider
       value={{

front/src/index.css

@@ -1,3 +1,9 @@
+*,
+*::before,
+*::after {
+  box-sizing: border-box;
+}
+
 :root {
   --main-bg-color: #282828;
   --primary-text-color: #ebdbb2;
@@ -66,6 +72,7 @@ body {
   justify-content: space-between;
   align-items: center;
 
+  margin-bottom: 1rem;
   border-radius: 12px;
   padding: 0.5rem;
   padding-left: 2rem;
@@ -103,6 +110,13 @@ a:hover {
   gap: 2rem;
 }
 
+.flex-end-row {
+  display: flex;
+  flex-direction: row;
+  justify-content: flex-end;
+  gap: 1rem;
+}
+
 .container {
   padding-top: 1rem;
   max-width: 1200px;
@@ -138,10 +152,48 @@ a:hover {
   justify-content: space-around;
   flex-direction: row;
   align-items: center;
-  padding: 2rem;
+  padding-left: 1rem;
+  padding-right: 1rem;
   border-radius: 12px;
   border: solid 1px var(--gold-color);
   margin-top: 12px;
+  gap: 0.5rem;
+}
+
+.key-card-collection {
+  display: grid;
+  grid-template-columns: 1fr 1fr;
+  gap: 0.5rem;
+}
+
+input,
+textarea {
+  font-family: "DM Mono";
+  color: var(--primary-text-color);
+  background-color: rgba(0, 0, 0, 0.2);
+  border-radius: 4px;
+  border: 1px solid var(--primary-text-color);
+}
+input,textarea: focus {
+  border: 1px solid var(--gold-color);
+}
+
+.modal {
+  display: flex;
+  flex-direction: column;
+  gap: 1rem;
+
+  padding: 3rem;
+  top: 50%;
+  left: 50%;
+  -moz-transform: translateX(-50%) translateY(-50%);
+  -webkit-transform: translateX(-50%) translateY(-50%);
+  transform: translateX(-50%) translateY(-50%);
+  position: absolute;
+
+  border-radius: 12px;
+  border: solid 1px var(--purple-color);
+  background-color: var(--main-bg-color);
 }
 
 @media screen and (max-width: 680px) {
@@ -151,4 +203,22 @@ a:hover {
   .navbar {
     flex-direction: column;
   }
+  .key-card {
+    flex-direction: column;
+    justify-content: start;
+    gap: 0;
+    align-items: start;
+    padding-bottom: 1rem;
+  }
+  .flex-row-around {
+    flex-direction: column;
+    gap: 0;
+  }
+}
+
+@media screen and (max-width: 1200px) {
+  .key-card-collection {
+    display: flex;
+    flex-direction: column;
+  }
 }

front/src/root.jsx

@@ -2,7 +2,7 @@ import { Link, Outlet } from "react-router-dom";
 
 import logo from "./assets/chessh_sm.svg";
 
-import { useAuthContext, DEFAULT_EXPIRY_TIME_MS } from "./context/auth_context";
+import { useAuthContext } from "./context/auth_context";
 
 export const Root = () => {
   const { signedIn, setUserId, setSignedIn, setSessionOver } = useAuthContext();
@@ -45,15 +45,7 @@ export const Root = () => {
               </>
             ) : (
               <>
-                <a
+                <a href={process.env.REACT_APP_GITHUB_OAUTH} className="button">
-                  onClick={() =>
-                    setSessionOver(
-                      new Date(Date.now() + DEFAULT_EXPIRY_TIME_MS)
-                    )
-                  }
-                  href={process.env.REACT_APP_GITHUB_OAUTH}
-                  className="button"
-                >
                   🐙 Login w/ GitHub 🐙
                 </a>
               </>

front/src/routes/auth_successful.jsx

@@ -1,14 +1,24 @@
 import { useEffect, useCallback } from "react";
 import { Link } from "react-router-dom";
 
-import { useAuthContext } from "../context/auth_context";
+import {
+  useAuthContext,
+  DEFAULT_EXPIRY_TIME_MS,
+} from "../context/auth_context";
 
 export const AuthSuccessful = () => {
-  const { username, signedIn, setSignedIn, setUserId, setUsername } =
+  const {
-    useAuthContext();
+    username,
+    userId,
+    sessionOver,
+    signedIn,
+    setSignedIn,
+    setUserId,
+    setUsername,
+    setSessionOver,
+  } = useAuthContext();
 
-  const fetchMyself = useCallback(
+  useEffect(() => {
-    () =>
     fetch("/api/player/me", {
       credentials: "same-origin",
     })
@@ -17,13 +27,8 @@ export const AuthSuccessful = () => {
         setSignedIn(!!player);
         setUserId(player.id);
         setUsername(player.username);
-        }),
+      });
-    [setSignedIn, setUserId, setUsername]
+  }, []);
-  );
-
-  useEffect(() => {
-    fetchMyself();
-  }, [fetchMyself]);
 
   if (signedIn) {
     return (

front/src/routes/demo.jsx

@@ -35,8 +35,8 @@ export const Demo = () => {
       </h1>
       <div className="flex-row-around">
         <p>
-          CheSSH is a multiplayer, scalable, free, open source, and potentially
+          CheSSH is a multiplayer, scalable, free, open source, and (optionally)
-          passwordless game of Chess over the SSH protocol.
+          passwordless game of Chess over the SSH protocol, written in Elixir.
         </p>
         <a
           className="button gold"
@@ -44,7 +44,7 @@ export const Demo = () => {
           target="_blank"
           rel="noreferrer"
         >
-          🌟 Star 🌟
+          🌟 Star Repo 🌟
         </a>
       </div>
       <hr />
@@ -53,7 +53,7 @@ export const Demo = () => {
       <div className="flex-row-around">
         <h3>Would you like to play a game?</h3>
         <Link className="button" to="/home">
-          Yes, Joshua ⇒
+          Yes, Falken ⇒
         </Link>
       </div>
     </div>

front/src/routes/home.jsx

@@ -9,8 +9,8 @@ export const Home = () => {
   if (signedIn) {
     const sshConfig = `Host chessh
   Hostname ${process.env.REACT_APP_SSH_SERVER}
-  User ${username}
   Port ${process.env.REACT_APP_SSH_PORT}
+  User ${username}
   PubkeyAuthentication yes`;
     return (
       <>
@@ -37,10 +37,10 @@ export const Home = () => {
           />
 
           <div>
-            <li>And connect with:</li>
+            <li>Then, connect with:</li>
             <CopyBlock
               theme={dracula}
-              text={`ssh -t chessh`}
+              text={"ssh -t chessh"}
               language={"shell"}
               showLineNumbers={false}
               codeBlock
@@ -54,6 +54,9 @@ export const Home = () => {
   return (
     <div>
       <h1>CheSSH</h1>
+      <p>Hello!</p>
+      <p>Looks like you're not signed in 👀. </p>
+      <p>Please link your GitHub account above!</p>
     </div>
   );
 };

front/src/routes/keys.jsx

@@ -1,6 +1,9 @@
-import { useEffect, useState } from "react";
+import Modal from "react-modal";
+import { useEffect, useState, useCallback } from "react";
 import { useAuthContext } from "../context/auth_context";
 
+Modal.setAppElement("#root");
+
 const MINIMIZE_KEY_LEN = 40;
 const minimizeKey = (key) => {
   const n = key.length;
@@ -11,7 +14,7 @@ const minimizeKey = (key) => {
   return key;
 };
 
-const KeyCard = ({ props }) => {
+const KeyCard = ({ onDelete, props }) => {
   const { id, name, key } = props;
 
   const deleteThisKey = () => {
@@ -20,25 +23,41 @@ const KeyCard = ({ props }) => {
       method: "DELETE",
     })
       .then((r) => r.json())
-      .then((d) => d.success); //&& onDelete());
+      .then((d) => d.success && onDelete && onDelete());
   };
 
   return (
     <div className="key-card">
-      <h4>{name}</h4>
+      <h4 style={{ flex: 1 }}>{name}</h4>
-      <p>{minimizeKey(key)}</p>
+      <p style={{ flex: 4 }}>{minimizeKey(key)}</p>
 
-      <button className="button red" onClick={deleteThisKey}>
+      <button
+        style={{ flex: 0 }}
+        className="button red"
+        onClick={deleteThisKey}
+      >
         Delete
       </button>
     </div>
   );
 };
 
-const AddKey = () => {
+const AddKeyButton = ({ onSave }) => {
-  const [key, setKey] = useState("");
+  const [open, setOpen] = useState(false);
-  const [name, setName] = useState("");
+  const [name, setName] = useState({ value: "", error: "" });
-  const [error, setError] = useState("");
+  const [key, setKey] = useState({ value: "", error: "" });
+  const [errors, setErrors] = useState(null);
+
+  const setDefaults = () => {
+    setName({ value: "", error: "" });
+    setKey({ value: "", error: "" });
+    setErrors(null);
+  };
+
+  const close = () => {
+    setDefaults();
+    setOpen(false);
+  };
 
   const createKey = () => {
     fetch(`/api/player/keys`, {
@@ -48,28 +67,92 @@ const AddKey = () => {
         "Content-Type": "application/json",
       },
       body: JSON.stringify({
-        key,
+        key: key.value,
-        name,
+        name: name.value,
       }),
     })
       .then((r) => r.json())
       .then((d) => {
         if (d.success) {
-          setName("");
+          if (onSave) {
-          setKey("");
+            onSave();
+          }
+          setDefaults();
+          close();
+        } else if (d.errors) {
+          if (typeof d.errors === "object") {
+            setErrors(
+              Object.keys(d.errors).map(
+                (field) => `${field}: ${d.errors[field].join(",")}`
+              )
+            );
           } else {
-          setError(d.errors);
+            setErrors([d.errors]);
+          }
         }
       });
   };
 
   return (
-    <div className="key-card">
+    <div>
-      <input onChange={(e) => setName(e.target.value)} />
+      <button className="button" onClick={() => setOpen(true)}>
-      <textarea onChange={(e) => setKey(e.target.value)} />
+        + Add Key
-      <button className="button gold" onClick={createKey}>
+      </button>
+      <Modal
+        isOpen={open}
+        onRequestClose={close}
+        className="modal"
+        contentLabel="Add Key"
+      >
+        <div>
+          <h3>Add SSH Key</h3>
+          <p>
+            Not sure about this? Check{" "}
+            <a
+              href="https://www.ssh.com/academy/ssh/keygen"
+              target="_blank"
+              rel="noreferrer"
+            >
+              here
+            </a>{" "}
+            for help!
+          </p>
+          <hr />
+          <p>Key Name *</p>
+          <input
+            value={name.value}
+            onChange={(e) => setName({ ...name, value: e.target.value })}
+            required
+          />
+        </div>
+        <div>
+          <p>SSH Key *</p>
+          <textarea
+            cols={40}
+            rows={5}
+            value={key.value}
+            onChange={(e) => setKey({ ...key, value: e.target.value })}
+            required
+          />
+        </div>
+        <div>
+          {errors && (
+            <div style={{ color: "red" }}>
+              {errors.map((error, i) => (
+                <p key={i}>{error}</p>
+              ))}
+            </div>
+          )}
+        </div>
+        <div className="flex-end-row">
+          <button className="button" onClick={createKey}>
             Add
           </button>
+          <button className="button red" onClick={close}>
+            Cancel
+          </button>
+        </div>
+      </Modal>
     </div>
   );
 };
@@ -78,13 +161,19 @@ export const Keys = () => {
   const { userId } = useAuthContext();
   const [keys, setKeys] = useState(null);
 
-  useEffect(() => {
+  const refreshKeys = useCallback(
-    if (userId) {
+    () =>
       fetch(`/api/player/${userId}/keys`)
         .then((r) => r.json())
-        .then((keys) => setKeys(keys));
+        .then((keys) => setKeys(keys)),
+    [userId]
+  );
+
+  useEffect(() => {
+    if (userId) {
+      refreshKeys();
     }
-  }, [userId]);
+  }, [userId, refreshKeys]);
 
   if (!keys) {
     return <p>Loading...</p>;
@@ -92,12 +181,17 @@ export const Keys = () => {
   if (Array.isArray(keys)) {
     return (
       <>
-        <AddKey />
+        <h2>My Keys</h2>
+        <AddKeyButton onSave={refreshKeys} />
+        <div className="key-card-collection">
           {keys.length ? (
-          keys.map((key) => <KeyCard key={key.id} props={key} />)
+            keys.map((key) => (
+              <KeyCard key={key.id} onDelete={refreshKeys} props={key} />
+            ))
           ) : (
-          <p>No keys</p>
+            <p>Looks like you've got no keys, try adding some!</p>
           )}
+        </div>
       </>
     );
   }

lib/chessh/schema/key.ex

@@ -22,7 +22,7 @@ defmodule Chessh.Key do
     |> cast(update_encode_key(attrs, :key), [:key, :player_id])
     |> cast(attrs, [:name])
     |> validate_required([:key, :name])
-    |> validate_format(:key, ~r/[\-\w\d]+ [^ ]+$/, message: "invalid public ssh key")
+    |> validate_format(:key, ~r/^[\-\w\d]+ [^ ]+$/, message: "invalid public ssh key")
     |> validate_format(:key, ~r/^(?!ssh-dss).+/, message: "DSA keys are not supported")
     |> unique_constraint([:player_id, :key], message: "Player already has that key")
   end

lib/chessh/web/web.ex

@@ -3,6 +3,7 @@ defmodule Chessh.Web.Endpoint do
   alias Chessh.Web.Token
   use Plug.Router
   require Logger
+  import Ecto.Query
 
   plug(Plug.Logger)
   plug(:match)
@@ -127,9 +128,17 @@ defmodule Chessh.Web.Endpoint do
   post "/player/keys" do
     player = get_player_from_jwt(conn)
 
+    player_key_count =
+      Repo.aggregate(from(k in Key, where: k.player_id == ^player.id), :count, :id)
+
+    max_key_count = Application.get_env(:chessh, RateLimits)[:player_public_keys]
+
     {status, body} =
       case conn.body_params do
         %{"key" => key, "name" => name} ->
+          if player_key_count > max_key_count do
+            {400, %{errors: "Player has reached threshold of #{max_key_count} keys."}}
+          else
             case Key.changeset(%Key{player_id: player.id}, %{key: key, name: name})
                  |> Repo.insert() do
               {:ok, _new_key} ->
@@ -148,6 +157,7 @@ defmodule Chessh.Web.Endpoint do
                   }
                 }
             end
+          end
 
         _ ->
           {