def __init__(self, filename, device_infos, ppn=False):
self.device_infos = device_infos
self.partition_table = None
self.lockers = {}
self.iosVersion = 0
self.hasMBR = False
self.metadata_whitening = False
self.filename = filename
self.encrypted = device_infos["hwModel"] not in ["M68AP", "N45AP", "N82AP", "N72AP"]
self.initGeometry(device_infos["nand"])
if os.path.basename(filename).startswith("ce_"):
self.image = NANDImageSplitCEs(os.path.dirname(filename), device_infos["nand"])
elif filename == "remote":
self.image = NANDRemote(self.pageSize, self.metaSize, self.pagesPerBlock, self.bfn)
else:
self.image = NANDImageFlat(filename, device_infos["nand"])
s, page0 = self.readPage(0,0)
self.nandonly = (page0 != None) and page0.startswith("ndrG")
if self.nandonly:
self.encrypted = True
magics = ["DEVICEINFOBBT"]
nandsig = None
if page0 and page0[8:14] == "Darwin":
print "Found old style signature", page0[:8]
nandsig = page0
else:
magics.append("NANDDRIVERSIGN")
#sp0 = {}
sp0 = self.readSpecialPages(0, magics)
print "Found %s special pages in CE 0" % (", ".join(sp0.keys()))
if not self.nandonly:
print "Device does not boot from NAND (=> has a NOR)"
vfltype = '1' #use VSVFL by default
if not nandsig:
nandsig = sp0.get("NANDDRIVERSIGN")
if not nandsig:
print "NANDDRIVERSIGN not found, assuming metadata withening = %d" % self.metadata_whitening
else:
nSig, flags = struct.unpack("<LL", nandsig[:8])
#assert nandsig[3] == chr(0x43)
vfltype = nandsig[1]
self.metadata_whitening = (flags & 0x10000) != 0
print "NAND signature 0x%x flags 0x%x withening=%d, epoch=%s" % (nSig, flags, self.metadata_whitening, nandsig[0])
if not self.nandonly:
if self.device_infos.has_key("lockers"):
self.lockers = EffaceableLockers(self.device_infos.lockers.data)
else:
unit = self.findLockersUnit()
if unit:
self.lockers = EffaceableLockers(unit[0x40:])
self.lockers.display()
if not self.device_infos.has_key("lockers"):
self.device_infos.lockers = plistlib.Data(unit[0x40:0x40+960])
EMF = self.getEMF(device_infos["key89B"].decode("hex"))
dkey = self.getDKey(device_infos["key835"].decode("hex"))
self.device_infos.EMF = EMF.encode("hex")
self.device_infos.DKey = dkey.encode("hex")
deviceuniqueinfo = sp0.get("DEVICEUNIQUEINFO")
if not deviceuniqueinfo:
print "DEVICEUNIQUEINFO not found"
else:
scfg = parse_SCFG(deviceuniqueinfo)
print "Found DEVICEUNIQUEINFO, serial number=%s" % scfg.get("SrNm","SrNm not found !")
if vfltype == '0':
print "Using legacy VFL"
self.vfl = VFL(self)
self.ftl = FTL(self, self.vfl)
elif not ppn:
print "Using VSVFL"
self.vfl = VSVFL(self)
self.ftl = YAFTL(self.vfl)
