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Improve fixbaserom.py (#987)

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Set bytes past ROM's end to `0xFF`.
Recognize the infamous ZeldaEdit-edited rom.
This commit is contained in:
Dragorn421 2021-11-01 19:21:05 +01:00 committed by GitHub
parent 970513253b
commit 8e57f3bca3
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 21 additions and 8 deletions
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fixbaserom.py
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@ -17,14 +17,19 @@ if path.exists("baserom.z64"):
sys.exit(0) sys.exit(0)
# Determine if we have a ROM file # Determine if we have a ROM file
romFileName = "" romFileExtensions = ["z64", "n64", "v64"]
if path.exists("baserom_original.z64"):
romFileName = "baserom_original.z64" def find_baserom_original():
elif path.exists("baserom_original.n64"): for romFileExtLower in romFileExtensions:
romFileName = "baserom_original.n64" for romFileExt in (romFileExtLower, romFileExtLower.upper()):
elif path.exists("baserom_original.v64"): romFileNameCandidate = "baserom_original." + romFileExt
romFileName = "baserom_original.v64" if path.exists(romFileNameCandidate):
else: return romFileNameCandidate
return None
romFileName = find_baserom_original()
if romFileName is None:
print("Error: Could not find baserom_original.z64/baserom_original.n64/baserom_original.v64.") print("Error: Could not find baserom_original.z64/baserom_original.n64/baserom_original.v64.")
sys.exit(1) sys.exit(1)
@ -68,11 +73,19 @@ elif fileContent[0] == 0x37:
print("Patching header...") print("Patching header...")
fileContent[0x3E] = 0x50 fileContent[0x3E] = 0x50
for i in range(0x35CF000, len(fileContent)):
fileContent[i] = 0xFF
# Check to see if the ROM is a "vanilla" Debug ROM # Check to see if the ROM is a "vanilla" Debug ROM
str_hash = get_str_hash(bytearray(fileContent)) str_hash = get_str_hash(bytearray(fileContent))
if str_hash != "f0b7f35375f9cc8ca1b2d59d78e35405": if str_hash != "f0b7f35375f9cc8ca1b2d59d78e35405":
print("Error: Expected a hash of f0b7f35375f9cc8ca1b2d59d78e35405 but got " + str_hash + ". " + print("Error: Expected a hash of f0b7f35375f9cc8ca1b2d59d78e35405 but got " + str_hash + ". " +
"The baserom has probably been tampered, find a new one") "The baserom has probably been tampered, find a new one")
if str_hash == "32fe2770c0f9b1a9cd2a4d449348c1cb":
print("The provided baserom is a rom which has been edited with ZeldaEdit and is not suitable for use with decomp. " +
"Find a new one.")
sys.exit(1) sys.exit(1)
# Write out our new ROM # Write out our new ROM