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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,292 @@ | ||
| ################################################################################# | ||
| # Copyright (C) 2009-2011 Vladimir "Farcaller" Pouzanov <[email protected]> # | ||
| # # | ||
| # Permission is hereby granted, free of charge, to any person obtaining a copy # | ||
| # of this software and associated documentation files (the "Software"), to deal # | ||
| # in the Software without restriction, including without limitation the rights # | ||
| # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell # | ||
| # copies of the Software, and to permit persons to whom the Software is # | ||
| # furnished to do so, subject to the following conditions: # | ||
| # # | ||
| # The above copyright notice and this permission notice shall be included in # | ||
| # all copies or substantial portions of the Software. # | ||
| # # | ||
| # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR # | ||
| # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, # | ||
| # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE # | ||
| # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER # | ||
| # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, # | ||
| # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN # | ||
| # THE SOFTWARE. # | ||
| ################################################################################# | ||
|
|
||
| import struct | ||
| import codecs | ||
| from datetime import datetime, timedelta | ||
|
|
||
| class BPListWriter(object): | ||
| def __init__(self, objects): | ||
| self.bplist = "" | ||
| self.objects = objects | ||
|
|
||
| def binary(self): | ||
| '''binary -> string | ||
| Generates bplist | ||
| ''' | ||
| self.data = 'bplist00' | ||
|
|
||
| # TODO: flatten objects and count max length size | ||
|
|
||
| # TODO: write objects and save offsets | ||
|
|
||
| # TODO: write offsets | ||
|
|
||
| # TODO: write metadata | ||
|
|
||
| return self.data | ||
|
|
||
| def write(self, filename): | ||
| ''' | ||
| Writes bplist to file | ||
| ''' | ||
| if self.bplist != "": | ||
| pass | ||
| # TODO: save self.bplist to file | ||
| else: | ||
| raise Exception('BPlist not yet generated') | ||
|
|
||
| class BPListReader(object): | ||
| def __init__(self, s): | ||
| self.data = s | ||
| self.objects = [] | ||
| self.resolved = {} | ||
|
|
||
| def __unpackIntStruct(self, sz, s): | ||
| '''__unpackIntStruct(size, string) -> int | ||
| Unpacks the integer of given size (1, 2 or 4 bytes) from string | ||
| ''' | ||
| if sz == 1: | ||
| ot = '!B' | ||
| elif sz == 2: | ||
| ot = '!H' | ||
| elif sz == 4: | ||
| ot = '!I' | ||
| elif sz == 8: | ||
| ot = '!Q' | ||
| else: | ||
| raise Exception('int unpack size '+str(sz)+' unsupported') | ||
| return struct.unpack(ot, s)[0] | ||
|
|
||
| def __unpackInt(self, offset): | ||
| '''__unpackInt(offset) -> int | ||
| Unpacks int field from plist at given offset | ||
| ''' | ||
| return self.__unpackIntMeta(offset)[1] | ||
|
|
||
| def __unpackIntMeta(self, offset): | ||
| '''__unpackIntMeta(offset) -> (size, int) | ||
| Unpacks int field from plist at given offset and returns its size and value | ||
| ''' | ||
| obj_header = self.data[offset] | ||
| obj_type, obj_info = (obj_header & 0xF0), (obj_header & 0x0F) | ||
| int_sz = 2**obj_info | ||
| return int_sz, self.__unpackIntStruct(int_sz, self.data[offset+1:offset+1+int_sz]) | ||
|
|
||
| def __resolveIntSize(self, obj_info, offset): | ||
| '''__resolveIntSize(obj_info, offset) -> (count, offset) | ||
| Calculates count of objref* array entries and returns count and offset to first element | ||
| ''' | ||
| if obj_info == 0x0F: | ||
| ofs, obj_count = self.__unpackIntMeta(offset+1) | ||
| objref = offset+2+ofs | ||
| else: | ||
| obj_count = obj_info | ||
| objref = offset+1 | ||
| return obj_count, objref | ||
|
|
||
| def __unpackFloatStruct(self, sz, s): | ||
| '''__unpackFloatStruct(size, string) -> float | ||
| Unpacks the float of given size (4 or 8 bytes) from string | ||
| ''' | ||
| if sz == 4: | ||
| ot = '!f' | ||
| elif sz == 8: | ||
| ot = '!d' | ||
| else: | ||
| raise Exception('float unpack size '+str(sz)+' unsupported') | ||
| return struct.unpack(ot, s)[0] | ||
|
|
||
| def __unpackFloat(self, offset): | ||
| '''__unpackFloat(offset) -> float | ||
| Unpacks float field from plist at given offset | ||
| ''' | ||
| obj_header = self.data[offset] | ||
| obj_type, obj_info = (obj_header & 0xF0), (obj_header & 0x0F) | ||
| int_sz = 2**obj_info | ||
| return int_sz, self.__unpackFloatStruct(int_sz, self.data[offset+1:offset+1+int_sz]) | ||
|
|
||
| def __unpackDate(self, offset): | ||
| td = int(struct.unpack(">d", self.data[offset+1:offset+9])[0]) | ||
| return datetime(year=2001,month=1,day=1) + timedelta(seconds=td) | ||
|
|
||
| def __unpackItem(self, offset): | ||
| '''__unpackItem(offset) | ||
| Unpacks and returns an item from plist | ||
| ''' | ||
| obj_header = self.data[offset] | ||
| obj_type, obj_info = (obj_header & 0xF0), (obj_header & 0x0F) | ||
| if obj_type == 0x00: | ||
| if obj_info == 0x00: # null 0000 0000 | ||
| return None | ||
| elif obj_info == 0x08: # bool 0000 1000 // false | ||
| return False | ||
| elif obj_info == 0x09: # bool 0000 1001 // true | ||
| return True | ||
| elif obj_info == 0x0F: # fill 0000 1111 // fill byte | ||
| raise Exception("0x0F Not Implemented") # this is really pad byte, FIXME | ||
| else: | ||
| raise Exception('unpack item type '+str(obj_header)+' at '+str(offset)+ 'failed') | ||
| elif obj_type == 0x10: # int 0001 nnnn ... // # of bytes is 2^nnnn, big-endian bytes | ||
| return self.__unpackInt(offset) | ||
| elif obj_type == 0x20: # real 0010 nnnn ... // # of bytes is 2^nnnn, big-endian bytes | ||
| return self.__unpackFloat(offset) | ||
| elif obj_type == 0x30: # date 0011 0011 ... // 8 byte float follows, big-endian bytes | ||
| return self.__unpackDate(offset) | ||
| elif obj_type == 0x40: # data 0100 nnnn [int] ... // nnnn is number of bytes unless 1111 then int count follows, followed by bytes | ||
| obj_count, objref = self.__resolveIntSize(obj_info, offset) | ||
| return self.data[objref:objref+obj_count] # XXX: we return data as str | ||
| elif obj_type == 0x50: # string 0101 nnnn [int] ... // ASCII string, nnnn is # of chars, else 1111 then int count, then bytes | ||
| obj_count, objref = self.__resolveIntSize(obj_info, offset) | ||
| return self.data[objref:objref+obj_count] | ||
| elif obj_type == 0x60: # string 0110 nnnn [int] ... // Unicode string, nnnn is # of chars, else 1111 then int count, then big-endian 2-byte uint16_t | ||
| obj_count, objref = self.__resolveIntSize(obj_info, offset) | ||
| return self.data[objref:objref+obj_count*2].decode('utf-16be') | ||
| elif obj_type == 0x80: # uid 1000 nnnn ... // nnnn+1 is # of bytes | ||
| # FIXME: Accept as a string for now | ||
| obj_count, objref = self.__resolveIntSize(obj_info, offset) | ||
| return self.data[objref:objref+obj_count] | ||
| elif obj_type == 0xA0: # array 1010 nnnn [int] objref* // nnnn is count, unless '1111', then int count follows | ||
| obj_count, objref = self.__resolveIntSize(obj_info, offset) | ||
| arr = [] | ||
| for i in range(obj_count): | ||
| arr.append(self.__unpackIntStruct(self.object_ref_size, self.data[objref+i*self.object_ref_size:objref+i*self.object_ref_size+self.object_ref_size])) | ||
| return arr | ||
| elif obj_type == 0xC0: # set 1100 nnnn [int] objref* // nnnn is count, unless '1111', then int count follows | ||
| # XXX: not serializable via apple implementation | ||
| raise Exception("0xC0 Not Implemented") # FIXME: implement | ||
| elif obj_type == 0xD0: # dict 1101 nnnn [int] keyref* objref* // nnnn is count, unless '1111', then int count follows | ||
| obj_count, objref = self.__resolveIntSize(obj_info, offset) | ||
| keys = [] | ||
| for i in range(obj_count): | ||
| keys.append(self.__unpackIntStruct(self.object_ref_size, self.data[objref+i*self.object_ref_size:objref+i*self.object_ref_size+self.object_ref_size])) | ||
| values = [] | ||
| objref += obj_count*self.object_ref_size | ||
| for i in range(obj_count): | ||
| values.append(self.__unpackIntStruct(self.object_ref_size, self.data[objref+i*self.object_ref_size:objref+i*self.object_ref_size+self.object_ref_size])) | ||
| dic = {} | ||
| for i in range(obj_count): | ||
| dic[keys[i]] = values[i] | ||
| return dic | ||
| else: | ||
| raise Exception('don\'t know how to unpack obj type '+hex(obj_type)+' at '+str(offset)) | ||
|
|
||
| def __resolveObject(self, idx): | ||
| try: | ||
| return self.resolved[idx] | ||
| except KeyError: | ||
| obj = self.objects[idx] | ||
| if type(obj) == list: | ||
| newArr = [] | ||
| for i in obj: | ||
| newArr.append(self.__resolveObject(i)) | ||
| self.resolved[idx] = newArr | ||
| return newArr | ||
| if type(obj) == dict: | ||
| newDic = {} | ||
| for k,v in obj.items(): | ||
| key_resolved = self.__resolveObject(k) | ||
| if isinstance(key_resolved, str): | ||
| rk = key_resolved | ||
| else: | ||
| rk = codecs.decode(key_resolved, "utf-8") | ||
| rv = self.__resolveObject(v) | ||
| newDic[rk] = rv | ||
| self.resolved[idx] = newDic | ||
| return newDic | ||
| else: | ||
| self.resolved[idx] = obj | ||
| return obj | ||
|
|
||
| def parse(self): | ||
| # read header | ||
| if self.data[:8] != b'bplist00': | ||
| raise Exception('Bad magic') | ||
|
|
||
| # read trailer | ||
| self.offset_size, self.object_ref_size, self.number_of_objects, self.top_object, self.table_offset = struct.unpack('!6xBB4xI4xI4xI', self.data[-32:]) | ||
| #print "** plist offset_size:",self.offset_size,"objref_size:",self.object_ref_size,"num_objs:",self.number_of_objects,"top:",self.top_object,"table_ofs:",self.table_offset | ||
|
|
||
| # read offset table | ||
| self.offset_table = self.data[self.table_offset:-32] | ||
| self.offsets = [] | ||
| ot = self.offset_table | ||
| for i in range(self.number_of_objects): | ||
| offset_entry = ot[:self.offset_size] | ||
| ot = ot[self.offset_size:] | ||
| self.offsets.append(self.__unpackIntStruct(self.offset_size, offset_entry)) | ||
| #print "** plist offsets:",self.offsets | ||
|
|
||
| # read object table | ||
| self.objects = [] | ||
| k = 0 | ||
| for i in self.offsets: | ||
| obj = self.__unpackItem(i) | ||
| #print "** plist unpacked",k,type(obj),obj,"at",i | ||
| k += 1 | ||
| self.objects.append(obj) | ||
|
|
||
| # rebuild object tree | ||
| #for i in range(len(self.objects)): | ||
| # self.__resolveObject(i) | ||
|
|
||
| # return root object | ||
| return self.__resolveObject(self.top_object) | ||
|
|
||
| @classmethod | ||
| def plistWithString(cls, s): | ||
| parser = cls(s) | ||
| return parser.parse() | ||
|
|
||
| # helpers for testing | ||
| def plist(obj): | ||
| from Foundation import NSPropertyListSerialization, NSPropertyListBinaryFormat_v1_0 | ||
| b = NSPropertyListSerialization.dataWithPropertyList_format_options_error_(obj, NSPropertyListBinaryFormat_v1_0, 0, None) | ||
| return str(b.bytes()) | ||
|
|
||
| def unplist(s): | ||
| from Foundation import NSData, NSPropertyListSerialization | ||
| d = NSData.dataWithBytes_length_(s, len(s)) | ||
| return NSPropertyListSerialization.propertyListWithData_options_format_error_(d, 0, None, None) | ||
|
|
||
| if __name__ == "__main__": | ||
| import os | ||
| import sys | ||
| import json | ||
| file_path = sys.argv[1] | ||
|
|
||
| with open(file_path, "rb") as fp: | ||
| data = fp.read() | ||
|
|
||
| out = BPListReader(data).parse() | ||
|
|
||
| with open(file_path + ".json", "w") as fp: | ||
| json.dump(out, indent=4) |
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