There Is Life Before Main in Rust
Disclosures
🧠 This post is 100% human-written. Claude was used for feedback and to assist with the linker symbol diagram. Cursor was used for feedback and to ensure examples were compilable.
The author of this post is deeply interested in the topic of life-before-main: he is the author of the ctor crate, and the creator of the linktime project that we’ll be using in the examples below.
Deriving a Bit-Twiddling Hack: Signed Integer Overflow
As a thin layer on top of assembly language, C’s integer arithmetic APIs have always been minimal, effectively just mapping the underlying assembly opcodes to the C arithmetic operators. In addition, while unsigned arithmetic can safely overflow in C, signed arithmetic overflow is considered undefined behaviour, and UB can end up in heartache for C developers.
Hacking Bluetooth to Brew Coffee from GitHub Actions: Part 3 - GitHub Actions
This is the last part of a three-part series covering the odyssey of getting a new coffeemaker, learning BTLE and how it works, reverse-engineering the Bluetooth interface and Android applications for the coffeemaker, writing a Rust-based CLI interface, and finally, hooking it all up to a GitHub actions bot that lets you brew a coffee just by filing an issue!
In part 2 we got the command-line application working, and now it’s time to connect the dots and build a secure, yet web-accessible interface.
Hacking Bluetooth to Brew Coffee from GitHub Actions: Part 2 - Reverse Engineering
This is part 2 of a three-part series covering the odyssey of getting a new coffeemaker, learning BTLE and how it works, reverse-engineering the Bluetooth interface and Android applications for the coffeemaker, writing a Rust-based CLI interface, and finally, hooking it all up to a GitHub actions bot that lets you brew a coffee just by filing an issue!
Hacking Bluetooth to Brew Coffee from GitHub Actions: Part 1 - Bluetooth Investigation
This is going to be a long journey in three parts that covers the odyssey of getting a new coffeemaker, learning BTLE and how it works, reverse-engineering the Bluetooth interface and Android applications for the coffeemaker, writing a Rust-based CLI interface, and finally, hooking it all up to a GitHub actions bot that lets you brew a coffee just by filing an issue!