cap-std
rusty-wacc-viewer
cap-std | rusty-wacc-viewer | |
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12 | 1 | |
621 | - | |
0.6% | - | |
6.6 | - | |
about 1 month ago | - | |
Rust | ||
GNU General Public License v3.0 or later | - |
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cap-std
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Rust Library Team Aspirations | Inside Rust Blog
I believe you mean capability based, like cap-std.
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A Performance Evaluation on Rust Asynchronous Frameworks
There might be another reason to prefer async-std right now: the Bytecode Alliance is working on a version of std with support for capability-based security (called cap-std: https://github.com/bytecodealliance/cap-std ), and their async version is based on async-std (called cap-async-std: https://github.com/bytecodealliance/cap-std/tree/main/cap-async-std ). Given the clout that the Bytecode Alliance has, async-std might end up carving a niche out in the Wasm domain.
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Backdooring Rust crates for fun and profit
Would love to see something like this implemented around creating a Process in cap-std ( https://github.com/bytecodealliance/cap-std/issues/190 )
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Scripting Languages of the Future
I think it's not discussed enough how things like language features shape how library APIs are formed. People usually seem to only consider the question "how would I use this feature?" and not "how would the standard library look like with this feature?", which is surprising given how much builtin libraries affect the pleasantness of a language.
One of the things I'm excited to see is the cap-std project for Rust [0] given what Pony [1] has demonstrated is possible with capabilities. I'm also hoping that languages like Koka [2] and OCaml [3] will demonstrate interesting use cases for algebraic effects.
[0] https://github.com/bytecodealliance/cap-std
[1] https://www.ponylang.io/discover
[2] https://koka-lang.github.io
[3] https://github.com/ocaml-multicore/effects-examples
- Is using crates more safe than using npm?
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Why WebAssembly is innovative even outside the browser
I'm not sure you could hack the control flow when running bytecode on the JVM, but I strongly doubt that. (The JVM is "high-level" as pointed out previously and doesn't execute ASM like code. So there is no of the attack surface you have to care on the ASM level).
And capabilities are anyway something that belongs into the OS — and than programs need to be written accordingly. The whole point of the capability-security model is that you can't add it after the fact. That's why UNIX isn't, and never will be, a capability secure OS.
But "sanboxing" some process running on a VM is completely independent of that!
WASM won't get you anything beyond a "simple sanbox" ootb. Exactly the same as you have in the other major VM runtimes.
If you want capability-secure Rust, there is much more to that. You have to change a lot of code, and use an alternative std. lib¹. Of course you can't than use any code (or OS functionality) when it isn't also capability-secure. Otherwise the model breaks.
To be capability-secure you have actually to rewrite the world…
¹ https://github.com/bytecodealliance/cap-std
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Security review of "please", a sudo replacement written in Rust
The type system could definitely help. There's all sorts of things we can do. One really cool project is https://github.com/bytecodealliance/cap-std
- Preparing rustls for wider adoption
- cap-std: Capability-oriented version of the Rust standard library
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First class I/O
On the topic of unsafe being used to describe raw file descriptors, on one hand, there is a sense in which file descriptors are pointers, into another memory. They can leak, dangle, alias, or be forged, in exactly the same way. On the other, there is an open issue about this.
rusty-wacc-viewer
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Why WebAssembly is innovative even outside the browser
While a "host" application (for the WASM runtime used) is required to enable access to graphical output (or user input) it doesn't have to be a browser.
At the (almost) most basic level a chunk of memory can be used as a framebuffer--the host application would read the pixel data which the WASM bytecode wrote and then write it to the host display via OS-level routines.
There are some plans/experiments at making a framebuffer "device" available as part of WASI.
I've written a couple of graphical WASM host applications that aren't browsers (and which don't use memory for pixel data transfer just integer values returned from a function):
The "WebAssembly Calling Card (WACC) Viewer" is implemented via the Godot game engine and an addon that integrates the Wasmtime WASM runtime with the engine: https://wacc.rancidbacon.com
(Also implemented a WACC Viewer in Rust: https://gitlab.com/RancidBacon/rusty-wacc-viewer)
WACC specifies how to transform three integer values (returned from a function in a WASM module) into a coloured triangle in order to render it on screen.
Another "host application" I implemented was a libretro compatible plugin that loads a WASM module and then feeds the module with input from libretro & retrieves framebuffer pixel data (one pixel at a time :D ) via a WASM function call & writes it to the libretro framebuffer for display.
What are some alternatives?
godot-wasm-engine
hn-search - Hacker News Search
watt - Runtime for executing procedural macros as WebAssembly
wasmer - 🚀 The leading Wasm Runtime supporting WASIX, WASI and Emscripten
cargo2nix - Granular builds of Rust projects for Nix
Graal - GraalVM compiles Java applications into native executables that start instantly, scale fast, and use fewer compute resources 🚀
cargo-supply-chain - Gather author, contributor and publisher data on crates in your dependency graph.
awesome-wasm-runtimes - A list of webassemby runtimes
effects-examples - Examples to illustrate the use of algebraic effects in Multicore OCaml
bsnes-plus-wasm - debug-oriented fork of bsnes, with added wasm runtime for scripting