Oss-fuzz initialize

[0x34d]

For Everything related to oss-fuzz.

1. create the project.
2. create the fuzzer.
3. run the fuzzer.
4. reproduce bugs.

[cla-bot]

We require contributors to sign our Contributor License Agreement. In order for us to review and merge your code, please fill https://forms.gle/5635zjphDo5JEJQSA to get added. Your document will be manually checked by the maintainer. Be patient...

[cla-bot]

We require contributors to sign our Contributor License Agreement. In order for us to review and merge your code, please fill https://forms.gle/5635zjphDo5JEJQSA to get added. Your document will be manually checked by the maintainer. Be patient...

[cla-bot]

We require contributors to sign our Contributor License Agreement. In order for us to review and merge your code, please fill https://forms.gle/5635zjphDo5JEJQSA to get added. Your document will be manually checked by the maintainer. Be patient...

[0x34d]

Already signed it.

[0x34d]

@cla-bot check

[cla-bot]

The cla-bot has been summoned, and re-checked this pull request!

[stephane]

@0x34d thank you for the PR but I'm sure that this fuzzer code will be abandoned once merged.
This code is only useful if maintained by people who know how to write fuzzing tests and it should be included in a CI.

[0x34d]

I do understand. Well, fuzzing of project can be done by oss-fuzz. 
I will not give my words, but I can add some new targets. 
Can you hold the PR merge? 
These days I'm learning Autotools. 
So, compiling fuzzing targets can be done in a much easier way.

Regards Arjun.

[stephane]

Hi @0x34d,

I merged #669 and now your work on libmodbus fuzzer is now part of your CI.
The last run (https://github.com/stephane/libmodbus/actions/runs/3567020621/jobs/5994200530) raised an issue about a non-existing directory (fuzz from https://github.com/google/oss-fuzz/blob/master/projects/libmodbus/build.sh#L18).

Could you have a look at the issue, please?

[0x34d]

Yes, Fuzz is not available in the root dir of libmodbus.

There are two available fix:

1. you merge the Oss fuzz files #658
2. I make a New PR which have Fuzz dir init.

Update:
It should have failed there.

Step 5/6 : COPY fuzz/ $SRC/libmodbus/fuzz/

Give me 1-2 days, let me see what I can do.

[0x34d]

well, my PR is working fine. google/oss-fuzz#9131
Merge this, then we will see. #658

[stephane]

Sorry, I don't understand what you want to merge in libmodbus project between the closed PR and the external code :/

[0x34d]

Alright, Let's start it again.

1. we merge Oss fuzz files #658 in libmodbus
2. we merge test libmodbus google/oss-fuzz#9131 with some fixes in oss-fuzz.

Possibly error that you are reporting will be gone.
https://github.com/stephane/libmodbus/actions/runs/3567020621/jobs/5994200530

I don't see any other option rather than that.

Arjun.

[stephane]

Sorry but I don't want to merge code I'm not able to maintain (it contains zip files) and a different license.
The second point seems to delete files added by #658 :/

My goal here was to only fix the CI that uses the oss-fuzz branch but not merge the fuzz programs.

[0x34d]

My goal here was to only fix the CI that uses the oss-fuzz branch but not merge the fuzz programs.

Well, in that case, open an issue in OSS-Fuzz.
Sorry, I'm not understanding what's going on and I'm unable to fix it.

Regards Arjun.

[0x34d]

I hope this can help. 5dbb49a

[0x34d]

Hi, stephane

The bug is in:

• https://github.com/stephane/libmodbus/actions/runs/3567020621/jobs/5994200530

2022-11-28 17:10:47,428 - root - INFO - Running: docker run --rm --privileged --shm-size=2g --platform linux/amd64 -e FUZZING_ENGINE=libfuzzer -e CIFUZZ=True -e SANITIZER=address -e ARCHITECTURE=x86_64 -e FUZZING_LANGUAGE=c -e OUT=/github/workspace/build-out --volumes-from d96866fa1a2b gcr.io/oss-fuzz/libmodbus /bin/bash -c 'cp -r /src/libmodbus /github/workspace/storage/libmodbus'.
2022-11-28 17:10:47,968 - root - DEBUG - Stderr of command "git checkout -f f6689ba621d18a446ea2162079d9c84be246d310" is: Note: switching to 'f6689ba621d18a446ea2162079d9c84be246d310'.

when switching the branch. fuzz folder disappears.

 ---> 4be8994ab1eb
Step 5/6 : COPY fuzz/ $SRC/libmodbus/fuzz/

There are two way's to fix.

1. merge Oss fuzz files #658
2. Patch GitHub action.