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41 lines
1.0 KiB
Markdown
41 lines
1.0 KiB
Markdown
# XCM Simulator Fuzzer
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This project will fuzz-test the XCM simulator. It can catch reachable panics, timeouts as well as integer overflows and
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underflows.
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## Install dependencies
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```
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cargo install honggfuzz
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```
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## Run the fuzzer
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In this directory, run this command:
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```
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cargo hfuzz run xcm-fuzzer
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```
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## Run a single input
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In this directory, run this command:
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```
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cargo hfuzz run-debug xcm-fuzzer hfuzz_workspace/xcm-fuzzer/fuzzer_input_file
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```
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## Generate coverage
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In this directory, run these four commands:
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```
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RUSTFLAGS="-Zprofile -Ccodegen-units=1 -Copt-level=0 -Clink-dead-code -Coverflow-checks=off -Zpanic_abort_tests -Cpanic=abort" \
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CARGO_INCREMENTAL=0 SKIP_WASM_BUILD=1 CARGO_HOME=./cargo cargo build
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../../../target/debug/xcm-fuzzer hfuzz_workspace/xcm-fuzzer/input/
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zip -0 ccov.zip `find ../../../target/ \( -name "*.gc*" -o -name "test-*.gc*" \) -print`
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grcov ccov.zip -s ../../../ -t html --llvm --branch --ignore-not-existing -o ./coverage
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```
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The code coverage will be in `./coverage/index.html`.
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