mirror of
https://github.com/moparisthebest/SickRage
synced 2024-11-14 05:15:12 -05:00
0d9fbc1ad7
This version of SickBeard uses both TVDB and TVRage to search and gather it's series data from allowing you to now have access to and download shows that you couldn't before because of being locked into only what TheTVDB had to offer. Also this edition is based off the code we used in our XEM editon so it does come with scene numbering support as well as all the other features our XEM edition has to offer. Please before using this with your existing database (sickbeard.db) please make a backup copy of it and delete any other database files such as cache.db and failed.db if present, we HIGHLY recommend starting out with no database files at all to make this a fresh start but the choice is at your own risk! Enjoy!
354 lines
13 KiB
Python
354 lines
13 KiB
Python
"""
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RAR parser
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Status: can only read higher-level attructures
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Author: Christophe Gisquet
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"""
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from lib.hachoir_parser import Parser
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from lib.hachoir_core.field import (StaticFieldSet, FieldSet,
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Bit, Bits, Enum,
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UInt8, UInt16, UInt32, UInt64,
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String, TimeDateMSDOS32,
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NullBytes, NullBits, RawBytes)
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from lib.hachoir_core.text_handler import textHandler, filesizeHandler, hexadecimal
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from lib.hachoir_core.endian import LITTLE_ENDIAN
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from lib.hachoir_parser.common.msdos import MSDOSFileAttr32
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MAX_FILESIZE = 1000 * 1024 * 1024
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BLOCK_NAME = {
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0x72: "Marker",
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0x73: "Archive",
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0x74: "File",
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0x75: "Comment",
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0x76: "Extra info",
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0x77: "Subblock",
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0x78: "Recovery record",
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0x79: "Archive authenticity",
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0x7A: "New-format subblock",
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0x7B: "Archive end",
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}
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COMPRESSION_NAME = {
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0x30: "Storing",
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0x31: "Fastest compression",
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0x32: "Fast compression",
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0x33: "Normal compression",
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0x34: "Good compression",
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0x35: "Best compression"
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}
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OS_MSDOS = 0
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OS_WIN32 = 2
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OS_NAME = {
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0: "MS DOS",
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1: "OS/2",
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2: "Win32",
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3: "Unix",
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}
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DICTIONARY_SIZE = {
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0: "Dictionary size 64 Kb",
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1: "Dictionary size 128 Kb",
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2: "Dictionary size 256 Kb",
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3: "Dictionary size 512 Kb",
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4: "Dictionary size 1024 Kb",
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7: "File is a directory",
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}
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def formatRARVersion(field):
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"""
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Decodes the RAR version stored on 1 byte
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"""
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return "%u.%u" % divmod(field.value, 10)
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def commonFlags(s):
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yield Bit(s, "has_added_size", "Additional field indicating additional size")
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yield Bit(s, "is_ignorable", "Old versions of RAR should ignore this block when copying data")
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class ArchiveFlags(StaticFieldSet):
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format = (
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(Bit, "vol", "Archive volume"),
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(Bit, "has_comment", "Whether there is a comment"),
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(Bit, "is_locked", "Archive volume"),
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(Bit, "is_solid", "Whether files can be extracted separately"),
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(Bit, "new_numbering", "New numbering, or compressed comment"), # From unrar
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(Bit, "has_authenticity_information", "The integrity/authenticity of the archive can be checked"),
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(Bit, "is_protected", "The integrity/authenticity of the archive can be checked"),
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(Bit, "is_passworded", "Needs a password to be decrypted"),
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(Bit, "is_first_vol", "Whether it is the first volume"),
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(Bit, "is_encrypted", "Whether the encryption version is present"),
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(NullBits, "internal", 6, "Reserved for 'internal use'")
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)
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def archiveFlags(s):
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yield ArchiveFlags(s, "flags", "Archiver block flags")
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def archiveHeader(s):
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yield NullBytes(s, "reserved[]", 2, "Reserved word")
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yield NullBytes(s, "reserved[]", 4, "Reserved dword")
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def commentHeader(s):
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yield filesizeHandler(UInt16(s, "total_size", "Comment header size + comment size"))
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yield filesizeHandler(UInt16(s, "uncompressed_size", "Uncompressed comment size"))
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yield UInt8(s, "required_version", "RAR version needed to extract comment")
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yield UInt8(s, "packing_method", "Comment packing method")
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yield UInt16(s, "comment_crc16", "Comment CRC")
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def commentBody(s):
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size = s["total_size"].value - s.current_size
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if size > 0:
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yield RawBytes(s, "comment_data", size, "Compressed comment data")
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def signatureHeader(s):
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yield TimeDateMSDOS32(s, "creation_time")
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yield filesizeHandler(UInt16(s, "arc_name_size"))
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yield filesizeHandler(UInt16(s, "user_name_size"))
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def recoveryHeader(s):
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yield filesizeHandler(UInt32(s, "total_size"))
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yield textHandler(UInt8(s, "version"), hexadecimal)
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yield UInt16(s, "rec_sectors")
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yield UInt32(s, "total_blocks")
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yield RawBytes(s, "mark", 8)
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def avInfoHeader(s):
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yield filesizeHandler(UInt16(s, "total_size", "Total block size"))
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yield UInt8(s, "version", "Version needed to decompress", handler=hexadecimal)
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yield UInt8(s, "method", "Compression method", handler=hexadecimal)
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yield UInt8(s, "av_version", "Version for AV", handler=hexadecimal)
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yield UInt32(s, "av_crc", "AV info CRC32", handler=hexadecimal)
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def avInfoBody(s):
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size = s["total_size"].value - s.current_size
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if size > 0:
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yield RawBytes(s, "av_info_data", size, "AV info")
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class FileFlags(FieldSet):
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static_size = 16
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def createFields(self):
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yield Bit(self, "continued_from", "File continued from previous volume")
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yield Bit(self, "continued_in", "File continued in next volume")
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yield Bit(self, "is_encrypted", "File encrypted with password")
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yield Bit(self, "has_comment", "File comment present")
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yield Bit(self, "is_solid", "Information from previous files is used (solid flag)")
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# The 3 following lines are what blocks more staticity
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yield Enum(Bits(self, "dictionary_size", 3, "Dictionary size"), DICTIONARY_SIZE)
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for bit in commonFlags(self):
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yield bit
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yield Bit(self, "is_large", "file64 operations needed")
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yield Bit(self, "is_unicode", "Filename also encoded using Unicode")
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yield Bit(self, "has_salt", "Has salt for encryption")
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yield Bit(self, "uses_file_version", "File versioning is used")
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yield Bit(self, "has_ext_time", "Extra time ??")
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yield Bit(self, "has_ext_flags", "Extra flag ??")
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def fileFlags(s):
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yield FileFlags(s, "flags", "File block flags")
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class ExtTime(FieldSet):
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def createFields(self):
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yield textHandler(UInt16(self, "time_flags", "Flags for extended time"), hexadecimal)
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flags = self["time_flags"].value
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for index in xrange(4):
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rmode = flags >> ((3-index)*4)
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if rmode & 8:
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if index:
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yield TimeDateMSDOS32(self, "dos_time[]", "DOS Time")
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if rmode & 3:
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yield RawBytes(self, "remainder[]", rmode & 3, "Time remainder")
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def specialHeader(s, is_file):
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yield filesizeHandler(UInt32(s, "compressed_size", "Compressed size (bytes)"))
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yield filesizeHandler(UInt32(s, "uncompressed_size", "Uncompressed size (bytes)"))
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yield Enum(UInt8(s, "host_os", "Operating system used for archiving"), OS_NAME)
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yield textHandler(UInt32(s, "crc32", "File CRC32"), hexadecimal)
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yield TimeDateMSDOS32(s, "ftime", "Date and time (MS DOS format)")
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yield textHandler(UInt8(s, "version", "RAR version needed to extract file"), formatRARVersion)
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yield Enum(UInt8(s, "method", "Packing method"), COMPRESSION_NAME)
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yield filesizeHandler(UInt16(s, "filename_length", "File name size"))
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if s["host_os"].value in (OS_MSDOS, OS_WIN32):
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yield MSDOSFileAttr32(s, "file_attr", "File attributes")
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else:
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yield textHandler(UInt32(s, "file_attr", "File attributes"), hexadecimal)
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# Start additional field from unrar
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if s["flags/is_large"].value:
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yield filesizeHandler(UInt64(s, "large_size", "Extended 64bits filesize"))
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# End additional field
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size = s["filename_length"].value
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if size > 0:
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if s["flags/is_unicode"].value:
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charset = "UTF-8"
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else:
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charset = "ISO-8859-15"
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yield String(s, "filename", size, "Filename", charset=charset)
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# Start additional fields from unrar - file only
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if is_file:
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if s["flags/has_salt"].value:
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yield textHandler(UInt8(s, "salt", "Salt"), hexadecimal)
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if s["flags/has_ext_time"].value:
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yield ExtTime(s, "extra_time", "Extra time info")
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def fileHeader(s):
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return specialHeader(s, True)
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def fileBody(s):
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# File compressed data
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size = s["compressed_size"].value
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if s["flags/is_large"].value:
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size += s["large_size"].value
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if size > 0:
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yield RawBytes(s, "compressed_data", size, "File compressed data")
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def fileDescription(s):
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return "File entry: %s (%s)" % \
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(s["filename"].display, s["compressed_size"].display)
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def newSubHeader(s):
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return specialHeader(s, False)
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class EndFlags(StaticFieldSet):
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format = (
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(Bit, "has_next_vol", "Whether there is another next volume"),
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(Bit, "has_data_crc", "Whether a CRC value is present"),
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(Bit, "rev_space"),
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(Bit, "has_vol_number", "Whether the volume number is present"),
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(Bits, "unused[]", 4),
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(Bit, "has_added_size", "Additional field indicating additional size"),
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(Bit, "is_ignorable", "Old versions of RAR should ignore this block when copying data"),
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(Bits, "unused[]", 6),
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)
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def endFlags(s):
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yield EndFlags(s, "flags", "End block flags")
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class BlockFlags(FieldSet):
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static_size = 16
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def createFields(self):
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yield textHandler(Bits(self, "unused[]", 8, "Unused flag bits"), hexadecimal)
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yield Bit(self, "has_added_size", "Additional field indicating additional size")
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yield Bit(self, "is_ignorable", "Old versions of RAR should ignore this block when copying data")
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yield Bits(self, "unused[]", 6)
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class Block(FieldSet):
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BLOCK_INFO = {
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# None means 'use default function'
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0x72: ("marker", "Archive header", None, None, None),
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0x73: ("archive_start", "Archive info", archiveFlags, archiveHeader, None),
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0x74: ("file[]", fileDescription, fileFlags, fileHeader, fileBody),
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0x75: ("comment[]", "Stray comment", None, commentHeader, commentBody),
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0x76: ("av_info[]", "Extra information", None, avInfoHeader, avInfoBody),
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0x77: ("sub_block[]", "Stray subblock", None, newSubHeader, fileBody),
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0x78: ("recovery[]", "Recovery block", None, recoveryHeader, None),
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0x79: ("signature", "Signature block", None, signatureHeader, None),
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0x7A: ("new_sub_block[]", "Stray new-format subblock", fileFlags,
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newSubHeader, fileBody),
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0x7B: ("archive_end", "Archive end block", endFlags, None, None),
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}
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def __init__(self, parent, name):
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FieldSet.__init__(self, parent, name)
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t = self["block_type"].value
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if t in self.BLOCK_INFO:
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self._name, desc, parseFlags, parseHeader, parseBody = self.BLOCK_INFO[t]
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if callable(desc):
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self.createDescription = lambda: desc(self)
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elif desc:
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self._description = desc
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if parseFlags : self.parseFlags = lambda: parseFlags(self)
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if parseHeader : self.parseHeader = lambda: parseHeader(self)
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if parseBody : self.parseBody = lambda: parseBody(self)
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else:
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self.info("Processing as unknown block block of type %u" % type)
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self._size = 8*self["block_size"].value
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if t == 0x74 or t == 0x7A:
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self._size += 8*self["compressed_size"].value
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if "is_large" in self["flags"] and self["flags/is_large"].value:
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self._size += 8*self["large_size"].value
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elif "has_added_size" in self:
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self._size += 8*self["added_size"].value
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# TODO: check if any other member is needed here
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def createFields(self):
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yield textHandler(UInt16(self, "crc16", "Block CRC16"), hexadecimal)
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yield textHandler(UInt8(self, "block_type", "Block type"), hexadecimal)
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# Parse flags
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for field in self.parseFlags():
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yield field
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# Get block size
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yield filesizeHandler(UInt16(self, "block_size", "Block size"))
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# Parse remaining header
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for field in self.parseHeader():
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yield field
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# Finish header with stuff of unknow size
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size = self["block_size"].value - (self.current_size//8)
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if size > 0:
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yield RawBytes(self, "unknown", size, "Unknow data (UInt32 probably)")
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# Parse body
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for field in self.parseBody():
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yield field
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def createDescription(self):
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return "Block entry: %s" % self["type"].display
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def parseFlags(self):
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yield BlockFlags(self, "flags", "Block header flags")
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def parseHeader(self):
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if "has_added_size" in self["flags"] and \
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self["flags/has_added_size"].value:
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yield filesizeHandler(UInt32(self, "added_size",
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"Supplementary block size"))
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def parseBody(self):
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"""
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Parse what is left of the block
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"""
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size = self["block_size"].value - (self.current_size//8)
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if "has_added_size" in self["flags"] and self["flags/has_added_size"].value:
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size += self["added_size"].value
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if size > 0:
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yield RawBytes(self, "body", size, "Body data")
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class RarFile(Parser):
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MAGIC = "Rar!\x1A\x07\x00"
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PARSER_TAGS = {
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"id": "rar",
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"category": "archive",
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"file_ext": ("rar",),
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"mime": (u"application/x-rar-compressed", ),
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"min_size": 7*8,
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"magic": ((MAGIC, 0),),
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"description": "Roshal archive (RAR)",
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}
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endian = LITTLE_ENDIAN
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def validate(self):
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magic = self.MAGIC
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if self.stream.readBytes(0, len(magic)) != magic:
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return "Invalid magic"
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return True
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def createFields(self):
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while not self.eof:
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yield Block(self, "block[]")
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def createContentSize(self):
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start = 0
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end = MAX_FILESIZE * 8
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pos = self.stream.searchBytes("\xC4\x3D\x7B\x00\x40\x07\x00", start, end)
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if pos is not None:
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return pos + 7*8
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return None
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