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fix old hash digits #16845

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Merged
catboxanon merged 1 commit into from
Feb 15, 2025
Merged

fix old hash digits #16845

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6 changes: 3 additions & 3 deletions modules/hashes.py
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Original file line number Diff line number Diff line change
Expand Up @@ -83,7 +83,7 @@ def addnet_hash_safetensors(b):
return hash_sha256.hexdigest()


def partial_hash_from_cache(filename, ignore_cache=False):
def partial_hash_from_cache(filename, *, ignore_cache: bool = False, digits: int = 8):
"""old hash that only looks at a small part of the file and is prone to collisions
kept for compatibility, don't use this for new things
"""
Expand All @@ -95,15 +95,15 @@ def partial_hash_from_cache(filename, ignore_cache=False):
cache_mtime = cache_entry.get("mtime", 0)
cache_hash = cache_entry.get("hash", None)
if mtime == cache_mtime and cache_hash and not ignore_cache:
return cache_hash
return cache_hash[0:digits]

with open(filename, 'rb') as file:
m = hashlib.sha256()
file.seek(0x100000)
m.update(file.read(0x10000))
partial_hash = m.hexdigest()
hashes[filename] = {'mtime': mtime, 'hash': partial_hash}
return partial_hash[0:8]
return partial_hash[0:digits]

except FileNotFoundError:
pass
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