def recover(blockA, blockB, blocC):
"""
Recovers the original file from the given blocks
@param blockA: BlockStream instance
@param blockB: BlockStream instance
@param blockC: BlockStream instance
@return A FragmentStream instance
"""
conf = SADConfig()
rec = conf.getrecpath()
cache = conf.getstoragepath()
bnames = list()
for b in [blockA, blockB, blocC]:
name = os.path.join( cache, b.getfilename() )
b.savetofile(name)
bname.append(name)
fragname = blockA.getfilename()[:-6]
