From 52cc33f8077b789298fa54e7fea0f95c7c3db93f Mon Sep 17 00:00:00 2001
From: Matthieu Jolimaitre <matthieu@imagevo.fr>
Date: Tue, 14 May 2024 22:36:11 +0200
Subject: [PATCH 1/3] fix host script

---
 cc-tweaked/host.ts | 15 +++++----------
 1 file changed, 5 insertions(+), 10 deletions(-)

diff --git a/cc-tweaked/host.ts b/cc-tweaked/host.ts
index 4f146ca..50dad33 100755
--- a/cc-tweaked/host.ts
+++ b/cc-tweaked/host.ts
@@ -4,18 +4,17 @@ async function main() {
 	const [program_path] = Deno.args;
 	if (program_path === undefined) fail_with("Usage: host.ts <program_path>");
 	const port = 1728;
-	const server = Deno.listen({ port });
-	console.log("listening on port", port);
-	for await (const connection of server) handle(connection, program_path);
+	const server = Deno.serve({ port }, () => handle(program_path));
+	await server.finished;
 }
 
-async function handle(connection: Deno.TcpConn, program_path: string) {
-	console.log("serving");
+async function handle(program_path: string) {
+	console.log("Serving", program_path);
 	const file = await try_else(
 		() => Deno.open(program_path, { read: true }),
 		() => fail_with("Program at", program_path, "does not exists"),
 	);
-	await try_(() => file.readable.pipeTo(connection.writable));
+	return new Response(file.readable);
 }
 
 function fail_with(...message: string[]) {
@@ -31,8 +30,4 @@ async function try_else<T>(operation: () => T | Promise<T>, on_error: (error: un
 	}
 }
 
-async function try_<T>(operation: () => T | Promise<T>) {
-	return await try_else(operation, () => null);
-}
-
 if (import.meta.main) await main();

From 62cd230d5bee0a7b5d6e92ce59be60d8912fb94e Mon Sep 17 00:00:00 2001
From: Matthieu Jolimaitre <matthieu@imagevo.fr>
Date: Wed, 15 May 2024 00:33:42 +0200
Subject: [PATCH 2/3] fix host script

---
 cc-tweaked/host.ts | 35 ++++++++++++++++-------------------
 1 file changed, 16 insertions(+), 19 deletions(-)

diff --git a/cc-tweaked/host.ts b/cc-tweaked/host.ts
index 50dad33..18e659e 100755
--- a/cc-tweaked/host.ts
+++ b/cc-tweaked/host.ts
@@ -1,32 +1,29 @@
 #!/bin/env -S deno run --allow-read --allow-net
 
 async function main() {
-	const [program_path] = Deno.args;
-	if (program_path === undefined) fail_with("Usage: host.ts <program_path>");
 	const port = 1728;
-	const server = Deno.serve({ port }, () => handle(program_path));
+	const server = Deno.serve({ port }, (request) => handle(request));
 	await server.finished;
 }
 
-async function handle(program_path: string) {
-	console.log("Serving", program_path);
-	const file = await try_else(
-		() => Deno.open(program_path, { read: true }),
-		() => fail_with("Program at", program_path, "does not exists"),
-	);
-	return new Response(file.readable);
+async function handle(request: Request) {
+	const script = await open_requested_script(request);
+	if (script instanceof Response) return script;
+	console.log("Serving", script.path);
+	return new Response(script.content.readable);
 }
 
-function fail_with(...message: string[]) {
-	console.error(...message);
-	return Deno.exit(1);
-}
-
-async function try_else<T>(operation: () => T | Promise<T>, on_error: (error: unknown) => T | Promise<T>) {
+async function open_requested_script(request: Request) {
+	const requested_path = new URL(request.url).pathname.slice(1);
+	const invalid = () => new Response("Invalid script.", { status: 400 });
+	if (requested_path.includes("/")) return invalid();
+	if (requested_path.includes(".")) return invalid();
 	try {
-		return await operation();
-	} catch (error) {
-		return await on_error(error);
+		const path = "./scripts/" + requested_path + ".lua";
+		const content = await Deno.open(path, { read: true });
+		return { path, content };
+	} catch (_) {
+		return new Response("Unknown script.", { status: 400 });
 	}
 }
 

From 7007a2c9943c6ee3a1476da6eed8bc74eac18648 Mon Sep 17 00:00:00 2001
From: Matthieu Jolimaitre <matthieu@imagevo.fr>
Date: Wed, 15 May 2024 00:33:54 +0200
Subject: [PATCH 3/3] implement cat script

---
 cc-tweaked/scripts/cat.lua | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/cc-tweaked/scripts/cat.lua b/cc-tweaked/scripts/cat.lua
index d92e5af..b3e0820 100644
--- a/cc-tweaked/scripts/cat.lua
+++ b/cc-tweaked/scripts/cat.lua
@@ -1,8 +1,17 @@
-local arg1, arg2, arg3 = ...
+local path = ...
 
 local function main()
-    print("arg1", arg1, "arg2", arg2, "arg3", arg3)
-    local file = fs.open()
+    if path == nil then
+        print("Usage: cat <path>")
+        return
+    end
+    local file = fs.open(path, "r")
+    if file == nil then
+        print("No such file:", path)
+        return
+    end
+    local content = file.readAll()
+    print(content)
 end
 
 main()