def testZipFileWithSymlink(self): """Test that symlinks are preserved when unpacking generated zips.""" compressions = [zipfile.ZIP_STORED, zipfile.ZIP_DEFLATED] for compression in compressions: outfd = StringIO.StringIO() infd1 = StringIO.StringIO("this is a test string") infd2 = StringIO.StringIO("this is another test string") with utils.StreamingZipWriter(outfd, compression=compression) as writer: writer.WriteFromFD(infd1, "test1.txt") writer.WriteFromFD(infd2, "subdir/test2.txt") writer.WriteSymlink("test1.txt", "test1.txt.link") writer.WriteSymlink("subdir/test2.txt", "test2.txt.link") with utils.TempDirectory() as temp_dir: zip_path = os.path.join(temp_dir, "archive.zip") with open(zip_path, "w") as fd: fd.write(outfd.getvalue()) # Builtin python ZipFile implementation doesn't support symlinks, # so we have to extract the files with command line tool. subprocess.check_call( ["unzip", "-x", zip_path, "-d", temp_dir]) link_path = os.path.join(temp_dir, "test1.txt.link") self.assertTrue(os.path.islink(link_path)) self.assertEqual(os.readlink(link_path), "test1.txt") link_path = os.path.join(temp_dir, "test2.txt.link") self.assertTrue(os.path.islink(link_path)) self.assertEqual(os.readlink(link_path), "subdir/test2.txt")
def CreateArchive(self, _): # Create an output zip or tar file in the temp space. with aff4.FACTORY.Create(None, "TempImageFile", token=self.token) as outfd: if self.args.format == self.args.ArchiveFormat.ZIP: file_extension = "zip" elif self.args.format == self.args.ArchiveFormat.TAR_GZ: file_extension = "tar.gz" else: raise ValueError("Unknown archive format: %s" % self.args.format) outfd.urn = outfd.urn.Add("%s_%X%X.%s" % ( self.args.target_file_prefix, utils.PRNG.GetULong(), utils.PRNG.GetULong(), file_extension)) self.Log("Will create output on %s" % outfd.urn) self.state.output_archive_urn = outfd.urn collection = aff4.FACTORY.Open(self.args.collection_urn, token=self.token) buffered_outfd = io.BufferedWriter(RawIOBaseBridge(outfd), buffer_size=1024 * 1024 * 12) if self.args.format == self.args.ArchiveFormat.ZIP: streaming_writer = utils.StreamingZipWriter(buffered_outfd, "w", zipfile.ZIP_DEFLATED) elif self.args.format == self.args.ArchiveFormat.TAR_GZ: streaming_writer = utils.StreamingTarWriter(buffered_outfd, "w:gz") else: raise ValueError("Unknown archive format: %s" % self.args.format) with streaming_writer: self.DownloadCollectionFiles(collection, streaming_writer, self.args.target_file_prefix) self.state.output_size = rdfvalue.ByteSize(outfd.size)
def CreateArchive(self, _): # Create an output zip or tar file in the temp space. with aff4.FACTORY.Create(None, "TempImageFile", token=self.token) as outfd: friendly_hunt_name = self.args.hunt_urn.Basename().replace( ":", "_") if self.args.format == self.args.ArchiveFormat.ZIP: file_extension = "zip" elif self.args.format == self.args.ArchiveFormat.TAR_GZIP: file_extension = "tar.gz" else: raise ValueError("Unknown archive format: %s" % self.args.format) outfd.urn = outfd.urn.Add( "hunt_%s_%X%X.%s" % (friendly_hunt_name, utils.PRNG.GetULong(), utils.PRNG.GetULong(), file_extension)) self.Log("Will create output on %s" % outfd.urn) self.state.output_archive_urn = outfd.urn hunt = aff4.FACTORY.Open(self.args.hunt_urn, aff4_type="GRRHunt", token=self.token) hunt_output_urn = hunt.state.context.results_collection_urn collection = aff4.FACTORY.Open(hunt_output_urn, aff4_type="RDFValueCollection", token=self.token) buffered_outfd = io.BufferedWriter(RawIOBaseBridge(outfd), buffer_size=1024 * 1024 * 12) if self.args.format == self.args.ArchiveFormat.ZIP: streaming_writer = utils.StreamingZipWriter( buffered_outfd, "w", zipfile.ZIP_DEFLATED) elif self.args.format == self.args.ArchiveFormat.TAR_GZIP: streaming_writer = utils.StreamingTarWriter( buffered_outfd, "w:gz") else: raise ValueError("Unknown archive format: %s" % self.args.format) with streaming_writer: self.DownloadCollectionFiles(collection, streaming_writer, friendly_hunt_name) self.state.output_size = rdfvalue.ByteSize(outfd.size)
def testZipFileWithOneFile(self): """Test the zipfile implementation.""" compressions = [zipfile.ZIP_STORED, zipfile.ZIP_DEFLATED] for compression in compressions: outfd = StringIO.StringIO() # Write the zip into a file like object. infd = StringIO.StringIO("this is a test string") with utils.StreamingZipWriter(outfd, compression=compression) as writer: writer.WriteFromFD(infd, "test.txt") test_zip = zipfile.ZipFile(outfd, "r") test_zip.testzip() self.assertEqual(test_zip.namelist(), ["test.txt"]) self.assertEqual(test_zip.read("test.txt"), infd.getvalue())
def testZipFileWithSymlink(self): """Test that symlinks are preserved when unpacking generated zips.""" compressions = [zipfile.ZIP_STORED, zipfile.ZIP_DEFLATED] for compression in compressions: outfd = StringIO.StringIO() infd1 = StringIO.StringIO("this is a test string") infd2 = StringIO.StringIO("this is another test string") with utils.StreamingZipWriter(outfd, compression=compression) as writer: writer.WriteFromFD(infd1, "test1.txt") writer.WriteFromFD(infd2, "subdir/test2.txt") writer.WriteSymlink("test1.txt", "test1.txt.link") writer.WriteSymlink("subdir/test2.txt", "test2.txt.link") with utils.TempDirectory() as temp_dir: zip_path = os.path.join(temp_dir, "archive.zip") with open(zip_path, "w") as fd: fd.write(outfd.getvalue()) zip_fd = zipfile.ZipFile(outfd, "r") link_info = zip_fd.getinfo("test1.txt.link") self.assertEqual(link_info.external_attr, (0644 | 0120000) << 16) self.assertEqual(link_info.create_system, 3) link_contents = zip_fd.read("test1.txt.link") self.assertEqual(link_contents, "test1.txt") link_info = zip_fd.getinfo("test2.txt.link") self.assertEqual(link_info.external_attr, (0644 | 0120000) << 16) self.assertEqual(link_info.create_system, 3) link_contents = zip_fd.read("test2.txt.link") self.assertEqual(link_contents, "subdir/test2.txt")