[204] | 1 | #!/usr/bin/env python |
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| 2 | |
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| 3 | import sys |
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| 4 | from pyregfi.structures import * |
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| 5 | |
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| 6 | import ctypes |
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| 7 | import ctypes.util |
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[205] | 8 | from ctypes import c_char,c_char_p,c_int,c_uint16,c_bool,POINTER |
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[204] | 9 | |
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| 10 | regfi = ctypes.CDLL(ctypes.util.find_library('regfi'), use_errno=True) |
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| 11 | |
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| 12 | |
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| 13 | regfi.regfi_alloc.argtypes = [c_int] |
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| 14 | regfi.regfi_alloc.restype = POINTER(REGFI_FILE) |
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| 15 | |
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| 16 | regfi.regfi_alloc_cb.argtypes = [POINTER(REGFI_RAW_FILE)] |
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| 17 | regfi.regfi_alloc_cb.restype = POINTER(REGFI_FILE) |
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| 18 | |
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[205] | 19 | regfi.regfi_free.argtypes = [POINTER(REGFI_FILE)] |
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| 20 | regfi.regfi_free.restype = None |
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| 21 | |
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[204] | 22 | regfi.regfi_log_get_str.argtypes = [] |
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| 23 | regfi.regfi_log_get_str.restype = c_char_p |
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| 24 | |
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[205] | 25 | regfi.regfi_log_set_mask.argtypes = [c_uint16] |
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| 26 | regfi.regfi_log_set_mask.restype = c_bool |
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| 27 | |
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| 28 | regfi.regfi_free_record.argtypes = [c_void_p] |
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| 29 | regfi.regfi_free_record.restype = None |
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| 30 | |
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[206] | 31 | regfi.regfi_fetch_classname.argtypes = [POINTER(REGFI_FILE), POINTER(REGFI_NK)] |
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| 32 | regfi.regfi_fetch_classname.restype = POINTER(REGFI_CLASSNAME) |
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| 33 | |
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| 34 | regfi.regfi_fetch_sk.argtypes = [POINTER(REGFI_FILE), POINTER(REGFI_NK)] |
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| 35 | regfi.regfi_fetch_sk.restype = POINTER(REGFI_SK) |
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| 36 | |
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| 37 | regfi.regfi_fetch_data.argtypes = [POINTER(REGFI_FILE), POINTER(REGFI_VK)] |
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| 38 | regfi.regfi_fetch_data.restype = POINTER(REGFI_DATA) |
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| 39 | |
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[205] | 40 | regfi.regfi_iterator_new.argtypes = [POINTER(REGFI_FILE), REGFI_ENCODING] |
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| 41 | regfi.regfi_iterator_new.restype = POINTER(REGFI_ITERATOR) |
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| 42 | |
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| 43 | regfi.regfi_iterator_free.argtypes = [POINTER(REGFI_ITERATOR)] |
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| 44 | regfi.regfi_iterator_free.restype = None |
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| 45 | |
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| 46 | regfi.regfi_iterator_down.argtypes = [POINTER(REGFI_ITERATOR)] |
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| 47 | regfi.regfi_iterator_down.restype = c_bool |
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| 48 | |
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| 49 | regfi.regfi_iterator_up.argtypes = [POINTER(REGFI_ITERATOR)] |
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| 50 | regfi.regfi_iterator_up.restype = c_bool |
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| 51 | |
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| 52 | regfi.regfi_iterator_to_root.argtypes = [POINTER(REGFI_ITERATOR)] |
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| 53 | regfi.regfi_iterator_to_root.restype = c_bool |
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| 54 | |
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| 55 | regfi.regfi_iterator_walk_path.argtypes = [POINTER(REGFI_ITERATOR)] |
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| 56 | regfi.regfi_iterator_walk_path.restype = c_bool |
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| 57 | |
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| 58 | regfi.regfi_iterator_cur_key.argtypes = [POINTER(REGFI_ITERATOR)] |
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| 59 | regfi.regfi_iterator_cur_key.restype = POINTER(REGFI_NK) |
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| 60 | |
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| 61 | regfi.regfi_iterator_first_subkey.argtypes = [POINTER(REGFI_ITERATOR)] |
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| 62 | regfi.regfi_iterator_first_subkey.restype = c_bool |
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| 63 | |
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| 64 | regfi.regfi_iterator_cur_subkey.argtypes = [POINTER(REGFI_ITERATOR)] |
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| 65 | regfi.regfi_iterator_cur_subkey.restype = POINTER(REGFI_NK) |
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| 66 | |
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| 67 | regfi.regfi_iterator_next_subkey.argtypes = [POINTER(REGFI_ITERATOR)] |
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| 68 | regfi.regfi_iterator_next_subkey.restype = c_bool |
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| 69 | |
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| 70 | regfi.regfi_iterator_find_subkey.argtypes = [POINTER(REGFI_ITERATOR), c_char_p] |
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| 71 | regfi.regfi_iterator_find_subkey.restype = c_bool |
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| 72 | |
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| 73 | regfi.regfi_iterator_first_value.argtypes = [POINTER(REGFI_ITERATOR)] |
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| 74 | regfi.regfi_iterator_first_value.restype = c_bool |
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| 75 | |
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| 76 | regfi.regfi_iterator_cur_value.argtypes = [POINTER(REGFI_ITERATOR)] |
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| 77 | regfi.regfi_iterator_cur_value.restype = POINTER(REGFI_VK) |
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| 78 | |
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| 79 | regfi.regfi_iterator_next_value.argtypes = [POINTER(REGFI_ITERATOR)] |
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| 80 | regfi.regfi_iterator_next_value.restype = c_bool |
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| 81 | |
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| 82 | regfi.regfi_iterator_find_value.argtypes = [POINTER(REGFI_ITERATOR), c_char_p] |
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| 83 | regfi.regfi_iterator_find_value.restype = c_bool |
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| 84 | |
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| 85 | |
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[204] | 86 | regfi.regfi_init.argtypes = [] |
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| 87 | regfi.regfi_init.restype = None |
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| 88 | regfi.regfi_init() |
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| 89 | |
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| 90 | |
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[205] | 91 | def GetLogMessages(): |
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[206] | 92 | msgs = regfi.regfi_log_get_str() |
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| 93 | if msgs == None: |
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| 94 | return '' |
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| 95 | return msgs |
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[205] | 96 | |
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| 97 | |
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[206] | 98 | class _StructureWrapper(): |
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| 99 | "Handles memory management and proxies attribute access to base structures" |
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| 100 | base = None |
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| 101 | |
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| 102 | def __init__(self, base): |
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| 103 | # XXX: check for NULL here, throw an exception if so. |
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| 104 | self.base = base |
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| 105 | |
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| 106 | def __del__(self): |
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| 107 | regfi.regfi_free_record(self.base) |
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| 108 | |
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| 109 | def __getattr__(self, name): |
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| 110 | return getattr(self.base.contents, name) |
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| 111 | |
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| 112 | def __eq__(self, other): |
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| 113 | return (type(self) == type(other)) and (self.offset == other.offset) |
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| 114 | |
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| 115 | def __ne__(self, other): |
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| 116 | return (not self.__eq__(other)) |
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| 117 | |
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| 118 | |
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| 119 | class Key(_StructureWrapper): |
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| 120 | pass |
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| 121 | |
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| 122 | class Value(_StructureWrapper): |
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| 123 | pass |
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| 124 | |
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| 125 | class Data(_StructureWrapper): |
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| 126 | pass |
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| 127 | |
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| 128 | class Security(_StructureWrapper): |
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| 129 | pass |
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| 130 | |
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[205] | 131 | class Hive(): |
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[204] | 132 | file = None |
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| 133 | raw_file = None |
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| 134 | |
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| 135 | def __init__(self, fh): |
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[205] | 136 | # The fileno method may not exist, or it may thrown an exception |
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| 137 | # when called if the file isn't backed with a descriptor. |
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| 138 | try: |
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| 139 | if hasattr(fh, 'fileno'): |
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| 140 | self.file = regfi.regfi_alloc(fh.fileno()) |
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| 141 | return |
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| 142 | except: |
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| 143 | pass |
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[204] | 144 | |
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[205] | 145 | self.raw_file = structures.REGFI_RAW_FILE() |
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| 146 | self.raw_file.fh = fh |
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| 147 | self.raw_file.seek = seek_cb_type(self.raw_file.cb_seek) |
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| 148 | self.raw_file.read = read_cb_type(self.raw_file.cb_read) |
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| 149 | self.file = regfi.regfi_alloc_cb(self.raw_file) |
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[204] | 150 | |
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| 151 | def __getattr__(self, name): |
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| 152 | return getattr(self.file.contents, name) |
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[205] | 153 | |
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| 154 | def __del__(self): |
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| 155 | regfi.regfi_free(self.file) |
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| 156 | if self.raw_file != None: |
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| 157 | regfi.regfi_free(self.file) |
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| 158 | |
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[204] | 159 | |
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[205] | 160 | def __iter__(self): |
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| 161 | return HiveIterator(self) |
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[204] | 162 | |
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[206] | 163 | def subtree(self, path): |
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| 164 | hi = HiveIterator(self) |
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| 165 | hi.descend(path) |
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| 166 | return hi |
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[205] | 167 | |
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[206] | 168 | |
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[205] | 169 | class HiveIterator(): |
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| 170 | hive = None |
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| 171 | iter = None |
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[206] | 172 | iteration_root = None |
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[205] | 173 | |
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| 174 | def __init__(self, hive): |
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| 175 | # REGFI_ENCODING_UTF8==1 |
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| 176 | self.iter = regfi.regfi_iterator_new(hive.file, 1) |
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| 177 | if self.iter == None: |
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| 178 | raise Exception("Could not create iterator. Current log:\n" |
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| 179 | + GetLogMessages()) |
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| 180 | self.hive = hive |
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| 181 | |
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| 182 | def __getattr__(self, name): |
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| 183 | return getattr(self.file.contents, name) |
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| 184 | |
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| 185 | def __del__(self): |
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| 186 | regfi.regfi_iterator_free(self.iter) |
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| 187 | |
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| 188 | def __iter__(self): |
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[206] | 189 | self.iteration_root = None |
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[205] | 190 | return self |
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| 191 | |
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| 192 | def __next__(self): |
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[206] | 193 | if self.iteration_root == None: |
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| 194 | self.iteration_root = self.current_key() |
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[205] | 195 | elif not regfi.regfi_iterator_down(self.iter): |
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| 196 | up_ret = regfi.regfi_iterator_up(self.iter) |
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[206] | 197 | while (up_ret and |
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| 198 | not regfi.regfi_iterator_next_subkey(self.iter)): |
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| 199 | if self.iteration_root == self.current_key(): |
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| 200 | self.iteration_root = None |
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| 201 | raise StopIteration('') |
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[205] | 202 | up_ret = regfi.regfi_iterator_up(self.iter) |
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| 203 | |
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| 204 | if not up_ret: |
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| 205 | raise StopIteration('') |
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| 206 | |
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| 207 | if not regfi.regfi_iterator_down(self.iter): |
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| 208 | raise Exception('Error traversing iterator downward.'+ |
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| 209 | ' Current log:\n'+ GetLogMessages()) |
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| 210 | |
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| 211 | regfi.regfi_iterator_first_subkey(self.iter) |
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[206] | 212 | return self.current_key() |
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[205] | 213 | |
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[206] | 214 | def down(self): |
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| 215 | pass |
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| 216 | |
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| 217 | def up(self): |
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| 218 | pass |
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| 219 | |
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| 220 | def descend(self, path): |
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| 221 | #set up generator |
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| 222 | cpath = (bytes(p,'ascii') for p in path) |
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| 223 | |
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| 224 | # evaluate generator and create char* array |
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| 225 | apath = (c_char_p*len(path))(*cpath) |
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| 226 | |
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| 227 | if not regfi.regfi_iterator_walk_path(self.iter,apath): |
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| 228 | raise Exception('Could not locate path.\n'+GetLogMessages()) |
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| 229 | |
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| 230 | def current_key(self): |
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| 231 | return Key(regfi.regfi_iterator_cur_key(self.iter)) |
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