1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
|
## @file
#
# Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
# This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
# http://opensource.org/licenses/bsd-license.php
#
# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#
'''
ParseVar
'''
import os
import sys
import argparse
import subprocess
import uuid
import struct
import collections
import binascii
from ctypes import *
#
# Globals for help information
#
__prog__ = 'ParseVar'
__version__ = '%s Version %s' % (__prog__, '0.1 ')
__copyright__ = 'Copyright (c) 2017, Intel Corporation. All rights reserved.'
__usage__ = '%s -e|-d [options] <input_file>' % (__prog__)
class GUID(Structure):
_fields_ = [
('Guid1', c_uint32),
('Guid2', c_uint16),
('Guid3', c_uint16),
('Guid4', ARRAY(c_uint8, 8)),
]
class TIME(Structure):
_fields_ = [
('Year', c_uint16),
('Month', c_uint8),
('Day', c_uint8),
('Hour', c_uint8),
('Minute', c_uint8),
('Second', c_uint8),
('Pad1', c_uint8),
('Nanosecond', c_uint32),
('TimeZone', c_uint16),
('Daylight', c_uint8),
('Pad2', c_uint8),
]
EFI_VARIABLE_GUID = [0xddcf3616, 0x3275, 0x4164, 0x98, 0xb6, 0xfe, 0x85, 0x70, 0x7f, 0xfe, 0x7d]
EFI_AUTHENTICATED_VARIABLE_GUID = [0xaaf32c78, 0x947b, 0x439a, 0xa1, 0x80, 0x2e, 0x14, 0x4e, 0xc3, 0x77, 0x92]
# Variable Store Header Format.
VARIABLE_STORE_FORMATTED = 0x5a
# Variable Store Header State.
VARIABLE_STORE_HEALTHY = 0xfe
class VARIABLE_STORE_HEADER(Structure):
_fields_ = [
('Signature', GUID),
('Size', c_uint32),
('Format', c_uint8),
('State', c_uint8),
('Reserved', c_uint16),
('Reserved1', c_uint32),
]
# Variable data start flag.
VARIABLE_DATA = 0x55AA
# Variable State flags.
VAR_IN_DELETED_TRANSITION = 0xfe
VAR_DELETED = 0xfd
VAR_HEADER_VALID_ONLY = 0x7f
VAR_ADDED = 0x3f
class VARIABLE_HEADER(Structure):
_fields_ = [
('StartId', c_uint16),
('State', c_uint8),
('Reserved', c_uint8),
('Attributes', c_uint32),
('NameSize', c_uint32),
('DataSize', c_uint32),
('VendorGuid', GUID),
]
class AUTHENTICATED_VARIABLE_HEADER(Structure):
_fields_ = [
('StartId', c_uint16),
('State', c_uint8),
('Reserved', c_uint8),
('Attributes', c_uint32),
('MonotonicCount', c_uint64),
('TimeStamp', TIME),
('PubKeyIndex', c_uint32),
('NameSize', c_uint32),
('DataSize', c_uint32),
('VendorGuid', GUID),
]
# Alignment of Variable Data Header in Variable Store region.
HEADER_ALIGNMENT = 4
class DEFAULT_INFO(Structure):
_fields_ = [
('DefaultId', c_uint16),
('BoardId', c_uint8),
('Reserved', c_uint8),
]
class DEFAULT_DATA(Structure):
_fields_ = [
('HeaderSize', c_uint16),
('DefaultInfo', DEFAULT_INFO),
]
def DumpHexData(Data):
CharPerLine = 8
DataLen = len(Data)
Count = DataLen / CharPerLine
Rem = DataLen % CharPerLine
CountIndex = 0
for CountIndex in range (0, Count) :
TempData = Data[CountIndex * CharPerLine:CountIndex * CharPerLine + CharPerLine]
print "#// %04x: "%(CountIndex*CharPerLine) + binascii.hexlify(TempData)
if Rem != 0 :
TempData = Data[Count * CharPerLine:Count * CharPerLine + Rem]
print "#// %04x: "%(Count*CharPerLine) + binascii.hexlify(TempData)
def DumpBin(Data):
DataLen = len(Data)
for Index in range (0, DataLen - 1) :
print "0x%02x,"%(Data[Index]),
print "0x%02x"%(Data[DataLen - 1]),
def DumpName(Data):
DataLen = len(Data)
for Index in range (0, DataLen/2 - 1) :
print "%c"%(Data[Index * 2]),
if __name__ == '__main__':
#
# Create command line argument parser object
#
parser = argparse.ArgumentParser(prog=__prog__, version=__version__, usage=__usage__, description=__copyright__, conflict_handler='resolve')
group = parser.add_mutually_exclusive_group(required=True)
group.add_argument("-e", action="store_true", dest='Encode', help='encode file')
group.add_argument("-d", action="store_true", dest='Decode', help='decode file')
parser.add_argument("-v", "--verbose", dest='Verbose', action="store_true", help="increase output messages")
parser.add_argument("-q", "--quiet", dest='Quiet', action="store_true", help="reduce output messages")
parser.add_argument("--debug", dest='Debug', type=int, metavar='[0-9]', choices=range(0,10), default=0, help="set debug level")
parser.add_argument(metavar="input_file", dest='InputFile', type=argparse.FileType('rb'), help="specify the input filename")
#
# Parse command line arguments
#
args = parser.parse_args()
#
# Read input file into a buffer and save input filename
#
args.InputFileName = args.InputFile.name
args.InputFileBuffer = args.InputFile.read()
args.InputFile.close()
if args.Encode:
print 'Unsupported'
if args.Decode:
print '#//FCE binary'
FullInputFileBuffer = bytearray(args.InputFileBuffer)
FullSize = len(FullInputFileBuffer)
DefaultData = DEFAULT_DATA.from_buffer (bytearray(args.InputFileBuffer), 0)
print "#// DEFAULT_DATA:"
print "#// HeaderSize - 0x%04x" % DefaultData.HeaderSize
print "#// DefaultId - 0x%04x" % DefaultData.DefaultInfo.DefaultId
print "#// BoardId - 0x%02x" % DefaultData.DefaultInfo.BoardId
print ""
Offset = DefaultData.HeaderSize
VariableStoreHeader = VARIABLE_STORE_HEADER.from_buffer (bytearray(args.InputFileBuffer), Offset)
print "#// VARIABLE_STORE_HEADER:"
print "#// Signature - %08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x" % (VariableStoreHeader.Signature.Guid1, VariableStoreHeader.Signature.Guid2, VariableStoreHeader.Signature.Guid3, VariableStoreHeader.Signature.Guid4[0], VariableStoreHeader.Signature.Guid4[1], VariableStoreHeader.Signature.Guid4[2], VariableStoreHeader.Signature.Guid4[3], VariableStoreHeader.Signature.Guid4[4], VariableStoreHeader.Signature.Guid4[5], VariableStoreHeader.Signature.Guid4[6], VariableStoreHeader.Signature.Guid4[7])
print "#// Size - 0x%08x" % VariableStoreHeader.Size
print "#// Format - 0x%02x" % VariableStoreHeader.Format
print "#// State - 0x%02x" % VariableStoreHeader.State
print ""
Offset += sizeof(VARIABLE_STORE_HEADER)
Offset = (Offset + HEADER_ALIGNMENT - 1) & (~(HEADER_ALIGNMENT - 1))
if VariableStoreHeader.Format != VARIABLE_STORE_FORMATTED :
sys.exit(0)
if VariableStoreHeader.State != VARIABLE_STORE_HEALTHY :
sys.exit(0)
VarIndex = 1
while Offset < FullSize :
VariableHeader = VARIABLE_HEADER.from_buffer (bytearray(args.InputFileBuffer), Offset)
print "#// VARIABLE_HEADER:"
print "#// StartId - 0x%04x" % VariableHeader.StartId
print "#// State - 0x%02x" % VariableHeader.State
print "#// Attributes - 0x%08x" % VariableHeader.Attributes
print "#// NameSize - 0x%08x" % VariableHeader.NameSize
print "#// DataSize - 0x%08x" % VariableHeader.DataSize
print "#// VendorGuid - %08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x" % (VariableHeader.VendorGuid.Guid1, VariableHeader.VendorGuid.Guid2, VariableHeader.VendorGuid.Guid3, VariableHeader.VendorGuid.Guid4[0], VariableHeader.VendorGuid.Guid4[1], VariableHeader.VendorGuid.Guid4[2], VariableHeader.VendorGuid.Guid4[3], VariableHeader.VendorGuid.Guid4[4], VariableHeader.VendorGuid.Guid4[5], VariableHeader.VendorGuid.Guid4[6], VariableHeader.VendorGuid.Guid4[7])
Offset += sizeof(VARIABLE_HEADER)
if VariableHeader.StartId != VARIABLE_DATA :
sys.exit(0)
Name = FullInputFileBuffer[Offset:Offset + VariableHeader.NameSize]
AsciiName = []
for Int in Name:
if Int == 0:
continue
AsciiName.append(chr(Int))
AsciiName = ''.join(AsciiName)
print "#// Name - L\"" + AsciiName + "\""
#print "#// Name - L\"",
#DumpName(Name)
#print "\""
Offset += VariableHeader.NameSize
print "#// Data - "
Data=FullInputFileBuffer[Offset:Offset + VariableHeader.DataSize]
DumpHexData (Data)
Offset += VariableHeader.DataSize
print " gOemSkuTokenSpaceGuid.Pcd" + AsciiName + "Data|{",
DumpBin(Data)
#print "}|VOID*|0x000F%04x" % VarIndex
print "}"
print ""
#OutputFile = open(AsciiName, 'wb')
#OutputFile.write(Data)
#OutputFile.close()
VarIndex = VarIndex + 1
Offset = (Offset + HEADER_ALIGNMENT - 1) & (~(HEADER_ALIGNMENT - 1))
|
