Repo created

apkdiff.py

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+import sys
+from zipfile import ZipFile
+
+def compareFiles(first, second):
+	while True:
+		firstBytes = first.read(4096)
+		secondBytes = second.read(4096)
+		if firstBytes != secondBytes:
+			return False
+
+		if firstBytes == b"" and secondBytes == b"":
+			break
+
+	return True
+
+def compare(first, second):
+	FILES_TO_IGNORE = ["META-INF/MANIFEST.MF", "META-INF/CERT.RSA", "META-INF/CERT.SF"]
+
+	firstZip = ZipFile(first, 'r')
+	secondZip = ZipFile(second, 'r')
+
+	firstList = list(filter(lambda firstInfo: firstInfo.filename not in FILES_TO_IGNORE, firstZip.infolist()))
+	secondList = list(filter(lambda secondInfo: secondInfo.filename not in FILES_TO_IGNORE, secondZip.infolist()))
+
+	if len(firstList) != len(secondList):
+	    print("APKs has different amount of files (%d != %d)" % (len(firstList), len(secondList)))
+	    return False
+
+	for firstInfo in firstList:
+		found = False
+		for secondInfo in secondList:
+			if firstInfo.filename == secondInfo.filename:
+				found = True
+				firstFile = firstZip.open(firstInfo, 'r')
+				secondFile = secondZip.open(secondInfo, 'r')
+
+				if compareFiles(firstFile, secondFile) != True:
+					print("APK file %s does not match" % firstInfo.filename)
+					return False
+
+				secondList.remove(secondInfo)
+				break
+
+		if found == False:
+			print("file %s not found in second APK" % firstInfo.filename)
+			return False
+
+	if len(secondList) != 0:
+		for secondInfo in secondList:
+			print("file %s not found in first APK" % secondInfo.filename)
+		return False
+
+	return True
+
+if __name__ == '__main__':
+	if len(sys.argv) != 3:
+		print("Usage: apkdiff <pathToFirstApk> <pathToSecondApk>")
+		sys.exit(1)
+
+	if sys.argv[1] == sys.argv[2] or compare(sys.argv[1], sys.argv[2]) == True:
+		print("APKs are the same!")
+	else:
+		print("APKs are different!")