#! /usr/bin/env python3 import sys from zipfile import ZipFile class ApkDiff: # resources.arsc is ignored due to https://issuetracker.google.com/issues/110237303 # May be fixed in Android Gradle Plugin 3.4 IGNORE_FILES = ["META-INF/MANIFEST.MF", "META-INF/SIGNAL_S.RSA", "META-INF/SIGNAL_S.SF", "resources.arsc"] def compare(self, sourceApk, destinationApk): sourceZip = ZipFile(sourceApk, 'r') destinationZip = ZipFile(destinationApk, 'r') if self.compareManifests(sourceZip, destinationZip) and self.compareEntries(sourceZip, destinationZip) == True: print("APKs match!") else: print("APKs don't match!") def compareManifests(self, sourceZip, destinationZip): sourceEntrySortedList = sorted(sourceZip.namelist()) destinationEntrySortedList = sorted(destinationZip.namelist()) for ignoreFile in self.IGNORE_FILES: while ignoreFile in sourceEntrySortedList: sourceEntrySortedList.remove(ignoreFile) while ignoreFile in destinationEntrySortedList: destinationEntrySortedList.remove(ignoreFile) if len(sourceEntrySortedList) != len(destinationEntrySortedList): print("Manifest lengths differ!") for (sourceEntryName, destinationEntryName) in zip(sourceEntrySortedList, destinationEntrySortedList): if sourceEntryName != destinationEntryName: print("Sorted manifests don't match, %s vs %s" % (sourceEntryName, destinationEntryName)) return False return True def compareEntries(self, sourceZip, destinationZip): sourceInfoList = list(filter(lambda sourceInfo: sourceInfo.filename not in self.IGNORE_FILES, sourceZip.infolist())) destinationInfoList = list(filter(lambda destinationInfo: destinationInfo.filename not in self.IGNORE_FILES, destinationZip.infolist())) if len(sourceInfoList) != len(destinationInfoList): print("APK info lists of different length!") return False for sourceEntryInfo in sourceInfoList: for destinationEntryInfo in list(destinationInfoList): if sourceEntryInfo.filename == destinationEntryInfo.filename: sourceEntry = sourceZip.open(sourceEntryInfo, 'r') destinationEntry = destinationZip.open(destinationEntryInfo, 'r') if self.compareFiles(sourceEntry, destinationEntry) != True: print("APK entry %s does not match %s!" % (sourceEntryInfo.filename, destinationEntryInfo.filename)) return False destinationInfoList.remove(destinationEntryInfo) break return True def compareFiles(self, sourceFile, destinationFile): sourceChunk = sourceFile.read(1024) destinationChunk = destinationFile.read(1024) while sourceChunk != b"" or destinationChunk != b"": if sourceChunk != destinationChunk: return False sourceChunk = sourceFile.read(1024) destinationChunk = destinationFile.read(1024) return True if __name__ == '__main__': if len(sys.argv) != 3: print("Usage: apkdiff <pathToFirstApk> <pathToSecondApk>") sys.exit(1) ApkDiff().compare(sys.argv[1], sys.argv[2])