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readme cleanup

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Maciej Domanski
2022-12-28 10:58:44 +01:00
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utils/argv_fuzzing/README.md
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# argv_fuzzing feature # argv_fuzzing feature
AFL++ supports fuzzing file inputs or stdin. The argv_fuzzing feature allows for the fuzzing of arguments AFL++ supports fuzzing file inputs or stdin. The argv_fuzzing feature
passed to a program from the command line interface rather than from standard input. allows for the fuzzing of arguments passed to a program from the command line
interface rather than from standard input.
## With source code ## With source code
When the source code is available, a specific macro from the `argv-fuzz-inl.h` header file can be used to change When the source code is available, a specific macro from the `argv-fuzz-inl.h`
the program's behavior to build argv from STDIN. header file can be used to change the program's behavior to build argv from STDIN.
### Without persistent mode ### Without persistent mode
Conditions needed to use the argv_fuzzing feature: Conditions needed to use the argv_fuzzing feature:
1. Include `argv-fuzz-inl.h` header file (`#include "argv-fuzz-inl.h"`) 1. Include `argv-fuzz-inl.h` header file (`#include "argv-fuzz-inl.h"`)
2. Identify your main function that parses arguments (for example, `int main(int argc, char **argv)`) 2. Identify your main function that parses arguments
3. Use one of the following macros (near the beginning of the main function) to initialize argv with the fuzzer's input: (for example, `int main(int argc, char **argv)`)
3. Use one of the following macros (near the beginning of the main function)
to initialize argv with the fuzzer's input:
- `AFL_INIT_ARGV();` or - `AFL_INIT_ARGV();` or
- `AFL_INIT_SET0("prog_name");` to preserve `argv[0]` (the name of the program being executed) - `AFL_INIT_SET0("prog_name");` to preserve `argv[0]`
(the name of the program being executed)
see: [argv_fuzz_demo.c](argv_fuzz_demo.c) see: [argv_fuzz_demo.c](argv_fuzz_demo.c)