mirror of
https://github.com/moparisthebest/SickRage
synced 2024-11-17 23:05:11 -05:00
68 lines
2.2 KiB
Python
68 lines
2.2 KiB
Python
|
"""
|
||
|
|
Microsoft Archive parser
|
||
|
|
|
||
|
|
Author: Victor Stinner
|
||
|
|
Creation date: 2007-03-04
|
||
|
|
"""
|
||
|
|
|
||
|
|
MAX_NB_FILE = 100000
|
||
|
|
|
||
|
|
from lib.hachoir_parser import Parser
|
||
|
|
from lib.hachoir_core.field import FieldSet, String, UInt32, SubFile
|
||
|
|
from lib.hachoir_core.endian import LITTLE_ENDIAN
|
||
|
|
from lib.hachoir_core.text_handler import textHandler, filesizeHandler, hexadecimal
|
||
|
|
|
||
|
|
class FileIndex(FieldSet):
|
||
|
|
static_size = 68*8
|
||
|
|
|
||
|
|
def createFields(self):
|
||
|
|
yield String(self, "filename", 56, truncate="\0", charset="ASCII")
|
||
|
|
yield filesizeHandler(UInt32(self, "filesize"))
|
||
|
|
yield textHandler(UInt32(self, "crc32"), hexadecimal)
|
||
|
|
yield UInt32(self, "offset")
|
||
|
|
|
||
|
|
def createDescription(self):
|
||
|
|
return "File %s (%s) at %s" % (
|
||
|
|
self["filename"].value, self["filesize"].display, self["offset"].value)
|
||
|
|
|
||
|
|
class MarFile(Parser):
|
||
|
|
MAGIC = "MARC"
|
||
|
|
PARSER_TAGS = {
|
||
|
|
"id": "mar",
|
||
|
|
"category": "archive",
|
||
|
|
"file_ext": ("mar",),
|
||
|
|
"min_size": 80*8, # At least one file index
|
||
|
|
"magic": ((MAGIC, 0),),
|
||
|
|
"description": "Microsoft Archive",
|
||
|
|
}
|
||
|
|
endian = LITTLE_ENDIAN
|
||
|
|
|
||
|
|
def validate(self):
|
||
|
|
if self.stream.readBytes(0, 4) != self.MAGIC:
|
||
|
|
return "Invalid magic"
|
||
|
|
if self["version"].value != 3:
|
||
|
|
return "Invalid version"
|
||
|
|
if not(1 <= self["nb_file"].value <= MAX_NB_FILE):
|
||
|
|
return "Invalid number of file"
|
||
|
|
return True
|
||
|
|
|
||
|
|
def createFields(self):
|
||
|
|
yield String(self, "magic", 4, "File signature (MARC)", charset="ASCII")
|
||
|
|
yield UInt32(self, "version")
|
||
|
|
yield UInt32(self, "nb_file")
|
||
|
|
files = []
|
||
|
|
for index in xrange(self["nb_file"].value):
|
||
|
|
item = FileIndex(self, "file[]")
|
||
|
|
yield item
|
||
|
|
if item["filesize"].value:
|
||
|
|
files.append(item)
|
||
|
|
files.sort(key=lambda item: item["offset"].value)
|
||
|
|
for index in files:
|
||
|
|
padding = self.seekByte(index["offset"].value)
|
||
|
|
if padding:
|
||
|
|
yield padding
|
||
|
|
size = index["filesize"].value
|
||
|
|
desc = "File %s" % index["filename"].value
|
||
|
|
yield SubFile(self, "data[]", size, desc, filename=index["filename"].value)
|
||
|
|
|