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Add git.Blob Fuzz Target #1911

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Merged
merged 2 commits into from
May 5, 2024
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Add git.Blob Fuzz Target #1911

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48abb1c
Add git.Blob fuzz target
DaveLak May 4, 2024
6823e45
Use fuzzed data for all git.Blob arguments
DaveLak May 4, 2024
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Use fuzzed data for all git.Blob arguments 
This increases the edges reached by the fuzzer, making for a more
effective test with higher coverage.
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@DaveLak
DaveLak committed May 4, 2024
commit 6823e4543f33eb623df14a5a27c9731199de7a4f
18 changes: 11 additions & 7 deletions fuzzing/fuzz-targets/fuzz_blob.py
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Expand Up @@ -16,13 +16,17 @@ def TestOneInput(data):

with tempfile.TemporaryDirectory() as temp_dir:
repo = git.Repo.init(path=temp_dir)
blob = git.Blob(
repo,
**{
"binsha": git.Blob.NULL_BIN_SHA,
"path": fdp.ConsumeUnicodeNoSurrogates(fdp.remaining_bytes()),
},
)
binsha = fdp.ConsumeBytes(20)
mode = fdp.ConsumeInt(fdp.ConsumeIntInRange(0, fdp.remaining_bytes()))
path = fdp.ConsumeUnicodeNoSurrogates(fdp.remaining_bytes())

try:
blob = git.Blob(repo, binsha, mode, path)
except AssertionError as e:
if "Require 20 byte binary sha, got" in str(e):
return -1
else:
raise e

_ = blob.mime_type

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