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cef8042edc
This allows us to binary patch firmware images. The diff generation is implemented with a forwards-only algorithm; this allows a vendor to remove non-free code without shipping a "reversed" version of the non-redistributable code.
20 lines
787 B
Markdown
20 lines
787 B
Markdown
Fuzzing
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=======
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CC=afl-gcc meson --default-library=static ../
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AFL_HARDEN=1 ninja
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afl-fuzz -m 300 -i fuzzing -o findings ./libdfu/dfu-tool --force dump @@
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afl-fuzz -m 300 -i fuzzing-patch-dump -o findings ./libdfu/dfu-tool --force patch-dump @@
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Generating
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----------
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mkdir -p fuzzing-patch-dump
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echo -n hello > complete-replace.old
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echo -n XXXXX > complete-replace.new
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./libdfu/dfu-tool patch-create complete-replace.old complete-replace.new fuzzing-patch-dump/complete-replace.bdiff
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echo -n helloworldhelloworldhelloworldhelloworld > grow-two-chunks.old
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echo -n XelloXorldhelloworldhelloworldhelloworlXXX > grow-two-chunks.new
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./libdfu/dfu-tool patch-create grow-two-chunks.old grow-two-chunks.new fuzzing-patch-dump/grow-two-chunks.bdiff
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