67 lines
2.2 KiB
Python
67 lines
2.2 KiB
Python
# command_19_1A.py
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import struct
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import logging
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import time
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class Command191A:
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def process_and_respond(self, data, conn):
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if len(data) < 14:
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logging.warning("19H数据长度不足")
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return
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pile_id = data[3:11]
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data_start = 14
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data_len = struct.unpack('<H', data[12:14])[0]
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data_end = data_start + data_len
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if len(data) < data_end + 1:
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logging.warning("19H数据域长度不匹配")
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return
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timestamp = data[data_start:data_start + 6]
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gun_id = data[data_start + 6]
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card_number = data[data_start + 7:data_start + 23].decode('ascii', errors='ignore').rstrip('\x00')
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balance = struct.unpack('<I', data[data_start + 23:data_start + 27])[0]
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parsed_data = {
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"pile_id": pile_id.hex().upper(),
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"timestamp": f"20{timestamp[0]:02X}-{timestamp[1]:02X}-{timestamp[2]:02X} {timestamp[3]:02X}:{timestamp[4]:02X}:{timestamp[5]:02X}",
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"gun_id": gun_id,
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"card_number": card_number,
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"balance_cents": balance
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}
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logging.info(f"19H卡鉴权请求: {parsed_data}")
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# 模拟鉴权逻辑（实际需查询数据库）
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auth_result = 0x01 # 假设通过
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new_balance = balance - 100 # 扣除费用
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# 构建1AH响应
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frame = bytearray([0x4A, 0x58, 0x1A])
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frame.extend(pile_id)
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frame.append(0x01) # 不加密
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data = bytearray()
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current_time = time.localtime()
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time_bytes = bytearray([
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current_time.tm_year - 2000,
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current_time.tm_mon,
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current_time.tm_mday,
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current_time.tm_hour,
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current_time.tm_min,
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current_time.tm_sec
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])
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data.extend(time_bytes)
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data.append(gun_id)
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data.append(auth_result)
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data.extend(struct.pack('<I', new_balance))
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frame.extend(struct.pack('<H', len(data)))
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frame.extend(data)
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checksum = 0
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for b in frame[2:-1]:
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checksum ^= b
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frame.append(checksum)
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conn.send(frame)
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logging.info(f"发送1AH鉴权响应: {frame.hex().upper()}") |