5d7ebea99f
Harden the code that does permission checks to protect against re-opening of stdin. Code that runs FFI is vulnerable to an attack where fd 0 is closed during a permission check and re-opened with a file that contains a positive response (ie: `y` or `A`). While FFI code is dangerous in general, we can make it more difficult for FFI-enabled code to bypass additional permission checks. - Checks to see if the underlying file for stdin has changed from the start to the end of the permission check (detects races) - Checks to see if the message is excessively long (lowering the window for races) - Checks to see if stdin and stderr are still terminals at the end of the function (making races more difficult) |
||
|---|---|---|
| .cargo | ||
| .devcontainer | ||
| .github | ||
| bench_util | ||
| cli | ||
| ext | ||
| runtime | ||
| test_ffi | ||
| test_napi | ||
| test_util | ||
| tools | ||
| .dlint.json | ||
| .dprint.json | ||
| .editorconfig | ||
| .gitattributes | ||
| .gitignore | ||
| .gitmodules | ||
| .rustfmt.toml | ||
| Cargo.lock | ||
| Cargo.toml | ||
| LICENSE.md | ||
| README.md | ||
| Releases.md | ||
| rust-toolchain.toml | ||
Deno
Deno
(/ˈdiːnoʊ/, pronounced
dee-no) is a JavaScript, TypeScript, and WebAssembly runtime with secure
defaults and a great developer experience. It's built on V8,
Rust, and Tokio.
Learn more about the Deno runtime in the documentation.
Installation
Install the Deno runtime on your system using one of the commands below. Note that there are a number of ways to install Deno - a comprehensive list of installation options can be found here.
Shell (Mac, Linux):
curl -fsSL https://deno.land/install.sh | sh
PowerShell (Windows):
irm https://deno.land/install.ps1 | iex
Homebrew (Mac):
brew install deno
Chocolatey (Windows):
choco install deno
Build and install from source
Complete instructions for building Deno from source can be found in the manual here.
Your first Deno program
Deno can be used for many different applications, but is most commonly used to
build web servers. Create a file called server.ts and include the following
TypeScript code:
Deno.serve((_req: Request) => {
return new Response("Hello, world!");
});
Run your server with the following command:
deno run --allow-net server.ts
This should start a local web server on http://localhost:8000.
Learn more about writing and running Deno programs in the docs.
Additional resources
- Deno Docs: official guides and reference docs for the Deno runtime, Deno Deploy, and beyond.
- Deno Standard Library: officially supported common utilities for Deno programs.
- deno.land/x: registry for third-party Deno modules.
- Developer Blog: Product updates, tutorials, and more from the Deno team.
Contributing
We appreciate your help! To contribute, please read our contributing instructions.