readaff4.py

from pyaff4 import data_store
from pyaff4 import aff4_image
from pyaff4 import lexicon
from pyaff4 import rdfvalue
from pyaff4 import zip
import urllib.parse

def getAff4Images(filepath):
    volume_path_urn = rdfvalue.URN.NewURNFromFilename(filepath)
    resolver = data_store.MemoryDataStore()
    with zip.ZipFile.NewZipFile(resolver,None, volume_path_urn) as volume:
        for subject in resolver.QueryPredicateObject(None,
                        lexicon.AFF4_TYPE, lexicon.AFF4_IMAGE_TYPE):
                name=urllib.parse.unquote(subject.value).split("//")[2]
                in_fd=resolver.AFF4FactoryOpen(subject)
                yield (name,in_fd)
for n,fd in getAff4Images(fn):
    print(n,fd)
    if n.endswith(".json"):
        print(fd.read())