读取ExtraBuf（联系人表）

pywxdump/analyzer/db_parsing.py

@@ -290,3 +290,60 @@ def read_ChatRoom_RoomData(RoomData):
         return data
     except Exception as e:
         return None
+
+
+def read_ExtraBuf(ExtraBuf: bytes):
+    """
+    读取ExtraBuf（联系人表）
+    :param ExtraBuf:
+    :return:
+    """
+    if not ExtraBuf:
+        return None
+    try:
+        buf_dict = {
+            'DDF32683': '0', '74752C06': '性别[1男2女]', '88E28FCE': '2', '761A1D2D': '3', '0263A0CB': '4',
+            '0451FF12': '5',
+            '228C66A8': '6', '46CF10C4': '个性签名', 'A4D9024A': '国', 'E2EAA8D1': '省', '1D025BBF': '市',
+            '4D6C4570': '11',
+            'F917BCC0': '公司名称', '759378AD': '手机号', '4335DFDD': '14', 'DE4CDAEB': '15', 'A72BC20A': '16',
+            '069FED52': '17',
+            '9B0F4299': '18', '3D641E22': '19', '1249822C': '20', '4EB96D85': '企微属性', 'B4F73ACB': '22',
+            '0959EB92': '23',
+            '3CF4A315': '24', 'C9477AC60201E44CD0E8': '26', 'B7ACF0F5': '28', '57A7B5A8': '29',
+            '81AE19B4': '朋友圈背景',
+            '695F3170': '31', 'FB083DD9': '32', '0240E37F': '33', '315D02A3': '34', '7DEC0BC3': '35',
+            '0E719F13': '备注图片',
+            '16791C90': '37'
+        }
+
+        rdata = {i: "" for i in buf_dict.values()}
+        for buf_name in buf_dict:
+            rdata_name = buf_dict[buf_name]
+            buf_name = bytes.fromhex(buf_name)
+            offset = ExtraBuf.find(buf_name)
+            if offset == -1:
+                continue
+            offset += len(buf_name)
+            type_id = ExtraBuf[offset: offset + 1]
+            offset += 1
+
+            if type_id == b"\x04":
+                rdata[rdata_name] = int.from_bytes(ExtraBuf[offset: offset + 4], "little")
+
+            elif type_id == b"\x18":
+                length = int.from_bytes(ExtraBuf[offset: offset + 4], "little")
+                rdata[rdata_name] = ExtraBuf[offset + 4: offset + 4 + length].decode("utf-16").rstrip("\x00")
+
+            elif type_id == b"\x17":
+                length = int.from_bytes(ExtraBuf[offset: offset + 4], "little")
+                rdata[rdata_name] = ExtraBuf[offset + 4: offset + 4 + length].decode("utf-8").rstrip("\x00")
+
+            elif type_id == b"\x05":
+                rdata[rdata_name] = f"0x{ExtraBuf[offset: offset + 8].hex()}"
+
+        return rdata
+
+    except Exception as e:
+        print(f'解析错误:\n{e}')
+        return None