def __str__(self):
return """
Header (Windows)
----------------
VendorGuid= {{{}}}
Size = 0x{:08X}
DataOffset= 0x{:08X}
DataSize = 0x{:08X}
Attributes= 0x{:08X}
""".format( EFI_GUID_STR(self.guid), self.Size, self.DataOffset, self.DataSize, self.Attributes )
def getEFIvariables_NtEnumerateSystemEnvironmentValuesEx2(nvram_buf):
start = 0
buffer = nvram_buf
bsize = len(buffer)
header_fmt = "<IIII16s"
header_size = struct.calcsize(header_fmt)
variables = dict()
off = 0
while (off + header_size) < bsize:
efi_var_hdr = EFI_HDR_WIN(
*struct.unpack_from(header_fmt, buffer[off:off + header_size]))
next_var_offset = off + efi_var_hdr.Size
efi_var_buf = buffer[off:next_var_offset]
efi_var_data = buffer[off + efi_var_hdr.DataOffset:off +
efi_var_hdr.DataOffset + efi_var_hdr.DataSize]
#efi_var_name = "".join( buffer[ start + header_size : start + efi_var_hdr.DataOffset ] ).decode('utf-16-le')
str_fmt = "{:d}s".format(efi_var_hdr.DataOffset - header_size)
s, = struct.unpack(
str_fmt, buffer[off + header_size:off + efi_var_hdr.DataOffset])
if sys.version_info[0] < 3:
efi_var_name = unicode(s, "utf-16-le",
errors="replace").split(u'\u0000')[0]
else:
efi_var_name = str(s, "utf-16-le",
errors="replace").split(u'\u0000')[0]
if efi_var_name not in variables.keys():
variables[efi_var_name] = []
# off, buf, hdr, data, guid, attrs
variables[efi_var_name].append(
(off, efi_var_buf, efi_var_hdr, efi_var_data,
EFI_GUID_STR(efi_var_hdr.guid), efi_var_hdr.Attributes))
if 0 == efi_var_hdr.Size: break
off = next_var_offset
return variables
