FFI Bridge Templates: Safe C Integration in Rust
Stop spending weeks wrestling with bindgen and unsafe Rust. Use copy-paste templates with built-in safe wrapper layers to integrate C libraries in hours, not weeks.
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What's Inside
- FFI Fundamentals: Why Unsafe Works and What Can Go Wrong
- The 5 Integration Patterns: Real Library Examples
- Template 1: Image Decoding with libpng Wrapper
- Template 2: Encryption and Hashing with libsodium Wrapper
- Template 3: Audio Codec with libmp3lame Wrapper
- Beyond the Templates: Error Handling, Testing, and Deployment
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Every unsafe block is a contract you write with the C library. Break the contract, and you get undefined behavior, the worst outcome because your program appears to work until it doesn't. What goes wrong in practice:
- Null pointer dereference, C returns null on error. You dereference it. Your program crashes randomly in production.
- Double-free, You call a C function that frees memory, then you free it again. Heap corruption. Undefined behavior.
- Buffer overflow, You don't validate the size C is asking you to write to. Memory corruption. Your program appears stable for weeks. Each pattern in this guide prevents these failures by design.
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