GitHub sign-in

src/app/jams/jam/[jam]/page.tsx

@@ -86,11 +86,12 @@ export default async function Home({
       <ConditionalNull condition={existingUser == null}>
         <h2>Log in with the Fediverse</h2>
         <p>If you'd like to participate in this jam, feel free to log in!</p>
+        <p>To log in with GitHub, enter "github.com"</p>
         <form action="/jams/oauth/login">
           <input name="instance" placeholder="Instance URL (e.g. &quot;social.besties.house&quot; or &quot;woem.men&quot;)" type="text" />
           <input type="submit" />
         </form>
-        <p><small>Tested on Mastodon, GoToSocial, Pleroma, and Misskey</small></p>
+        <p><small>Tested on GitHub, Mastodon, GoToSocial, Pleroma, and Misskey</small></p>
       </ConditionalNull>
       <ConditionalNull condition={existingUser != null}>
         <div>

src/app/jams/oauth/code/route.ts

@@ -37,7 +37,10 @@ export async function GET(request: NextRequest) {
   });
   
   // Test for user existence
-  let tUserExists = await mauth.verifyUser(tUserToken.token_type + " " + tUserToken.access_token);
+  let tUserExists;
+  if (instance == "github.com")
+    tUserExists = await mauth.verifyUser("Bearer " + tUserToken.access_token);
+  else tUserExists = await mauth.verifyUser(tUserToken.token_type + " " + tUserToken.access_token);
 
   console.log(tUserExists);
 
@@ -65,7 +68,17 @@ export async function GET(request: NextRequest) {
     status: 401
   });
 
-  let currentUser = {
+  let currentUser;
+  if (instance == "github.com") currentUser = {
+    id: nanoid(21),
+    instance,
+    username: tUserExists.login,
+    admin: false,
+    url: tUserExists.html_url,
+    banned: false, // GitHub should not be on tier1.
+    joined: Date.now()
+  } as UserTable;
+  else currentUser = {
     id: nanoid(21),
     instance,
     username: tUserExists.acct,

src/app/jams/oauth/login/route.ts

@@ -43,6 +43,7 @@ export async function GET(request: NextRequest) {
   });
 
   // Check if instance app exists
+  // For github.com, it should
   let existingInstanceApp = await db
       .selectFrom('apps')
       .where('apps.instance_domain', '=', instance)
@@ -81,5 +82,7 @@ export async function GET(request: NextRequest) {
   cookieStore.set("instance", instance, {
     expires: Date.now() + 604800000
   });
+  if (instance == "github.com")
+    return Response.redirect(`https://${instance}/login/oauth/authorize?client_id=${existingInstanceApp.client_id}&redirect_uri=${existingInstanceApp.redirect_uri}&scope=&state=${Math.random().toString(36).slice(2)}`)
   return Response.redirect(`https://${instance}/oauth/authorize?response_type=code&client_id=${existingInstanceApp.client_id}&redirect_uri=${existingInstanceApp.redirect_uri}&scope=read`);
 }

src/app/jams/page.tsx

@@ -58,11 +58,12 @@ export default async function Home({
       <p>Enjoy!</p>
       <ConditionalNull condition={existingUser == null}>
         <h2>Log in with the Fediverse</h2>
+        <p>To log in with GitHub, enter "github.com"</p>
         <form action="/jams/oauth/login">
           <input name="instance" placeholder="Instance URL (e.g. &quot;social.besties.house&quot; or &quot;woem.men&quot;)" type="text" />
           <input type="submit" />
         </form>
-        <p><small>Tested on Mastodon, GoToSocial, Pleroma, and Misskey</small></p>
+        <p><small>Tested on GitHub, Mastodon, GoToSocial, Pleroma, and Misskey</small></p>
       </ConditionalNull>
       <ConditionalNull condition={existingUser != null}>
         <p>Logged in as <a href={`/jams/user/${existingUser?.id}`}>{existingUser?.username}@{existingUser?.instance}</a> (<a href="/jams/oauth/logout">Logout</a>)</p>

src/lib/mastoauth/mastoauth.ts

@@ -73,16 +73,28 @@ export class MastoAuth {
     formData.append('client_id', client.client_id);
     formData.append('client_secret', client.client_secret);
     formData.append('redirect_uri', client.redirect_uri);
+    if (this.instance != "github.com")
       formData.append('grant_type', 'authorization_code');
     formData.append('code', code);
+    if (this.instance != "github.com")
       formData.append('scope', 'read');
 
     let appRequest;
     try {
+      if (this.instance == "github.com") {
+        appRequest = await fetch(`https://${this.instance}/login/oauth/access_token`, {
+          body: formData,
+          method: "post",
+          headers: {
+            "Accept": "application/json"
+          }
+        });
+      } else {
         appRequest = await fetch(`https://${this.instance}/oauth/token`, {
           body: formData,
           method: "post"
         });
+      }
     } catch (err) {
       return null;
     }
@@ -92,7 +104,7 @@ export class MastoAuth {
         access_token: string,
         token_type: string,
         scope: string,
-        created_at: number
+        created_at?: number
       } = await appRequest.json();
       return reqEntities;
     } else return null;
@@ -101,11 +113,19 @@ export class MastoAuth {
   async verifyUser(auth: string) {
     let appRequest;
     try { 
+      if (this.instance == "github.com") {
+        appRequest = await fetch(`https://api.${this.instance}/user`, {
+          headers: {
+            "Authorization": auth
+          }
+        });
+      } else {
         appRequest = await fetch(`https://${this.instance}/api/v1/accounts/verify_credentials`, {
           headers: {
             "Authorization": auth
           }
         });
+      }
     } catch (err) {
       return null;
     }