181 lines
5.8 KiB
Python
181 lines
5.8 KiB
Python
import struct
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import logging
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from datetime import datetime
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class Command191A:
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def __init__(self):
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self.command_19 = 0x19 # 卡鉴权命令
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self.command_1a = 0x1A # 卡鉴权响应
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def parse_19h(self, data):
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"""解析19H卡鉴权命令"""
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try:
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print("\n开始解析19H卡鉴权命令...")
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print(f"接收数据: {data.hex().upper()}")
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# 基础验证
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if len(data) < 14 or data[0:2] != b'JX' or data[2] != self.command_19:
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logging.warning("19H命令帧格式不正确")
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return None
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# 解析数据
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pile_id = data[3:11] # 桩号
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encrypt_mode = data[11] # 加密方式
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data_len = struct.unpack("<H", data[12:14])[0] # 数据长度
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# 解析数据域
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data_field = data[14:14 + data_len]
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# 解析时间标识
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time_bytes = data_field[0:6]
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year = time_bytes[0] + 2000
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month, day, hour, minute, second = time_bytes[1:6]
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timestamp = f"{year:04d}-{month:02d}-{day:02d} {hour:02d}:{minute:02d}:{second:02d}"
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# 解析卡号 (16字节ASCII)
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card_no = data_field[6:22].decode('ascii').rstrip('\x00')
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result = {
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"pile_id": pile_id,
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"timestamp": timestamp,
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"card_no": card_no
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}
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print("\n解析结果:")
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print(f"桩号: {pile_id.hex().upper()}")
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print(f"时间标识: {timestamp}")
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print(f"卡号: {card_no}")
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return result
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except Exception as e:
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logging.error(f"解析19H卡鉴权命令失败: {str(e)}")
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print(f"解析失败: {str(e)}")
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return None
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def build_1a_response(self, pile_id, card_no, allow=True, balance=3493, reject_reason=0):
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"""构建1AH卡鉴权响应"""
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try:
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print("\n构建1AH卡鉴权响应...")
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# 构建预期的响应：4A 58 1A 03 17 66 56 11 36 06 37 01 1D 00 19 01 09 0C 15 2E 65 36 39 61 32 31 30 33 00 00 00 00 00 00 00 00 A5 0E 0D 00 01 00 01 BF
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frame = bytearray()
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frame.extend(b'JX') # 帧起始标志 "JX"
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frame.append(self.command_1a) # 命令码1AH
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frame.extend(pile_id) # 桩号(保持原样)
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frame.append(0x01) # 数据加密方式(不加密)
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frame.append(0x1D) # 数据长度(29字节)
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frame.append(0x00) # 数据长度高字节
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# 构建数据域
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data = bytearray()
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# 时间标识(保持接近原样，仅秒数+3)
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now = datetime.now()
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data.extend(struct.pack("<BBBBBB",
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now.year - 2000, now.month, now.day,
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now.hour, now.minute, now.second))
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# 卡号(16字节，维持原样)
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data.extend(card_no.encode().ljust(16, b'\x00'))
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# 卡余额(0xA5 0E 0D 00 = 3493)
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data.extend(struct.pack("<I", balance))
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# 允许充电标志(0x01)
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data.append(0x01 if allow else 0x02)
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# 不可充电原因(0x00)
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data.append(reject_reason)
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# 计费模型选择(0x01)
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data.append(0x01)
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# 添加数据域
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frame.extend(data)
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# 计算校验码
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check = 0
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for b in frame[2:]:
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check ^= b
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frame.append(check)
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response = bytes(frame)
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print(f"响应数据: {response.hex().upper()}")
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return response
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except Exception as e:
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logging.error(f"构建1AH卡鉴权响应失败: {str(e)}")
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print(f"构建响应失败: {str(e)}")
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return None
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def process_and_respond(self, received_data, sock):
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"""处理收到的19H命令并回复1AH"""
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try:
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print("\n处理卡鉴权命令...")
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# 解析接收到的19H命令
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parsed = self.parse_19h(received_data)
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if not parsed:
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return False
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# 这里可以添加实际的卡鉴权逻辑
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# 例如检查卡号是否有效、查询余额等
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allow = True # 允许充电
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balance = 3493 # 余额34.93元
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reject_reason = 0 # 无拒绝原因
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# 构建1AH响应
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response = self.build_1a_response(
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parsed["pile_id"],
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parsed["card_no"],
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allow,
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balance,
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reject_reason
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)
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if not response:
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return False
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# 发送响应
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if sock and hasattr(sock, 'send'):
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sock.send(response)
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print("卡鉴权响应发送成功")
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return True
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except Exception as e:
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logging.error(f"处理卡鉴权命令失败: {str(e)}")
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print(f"处理失败: {str(e)}")
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return False
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def test_auth():
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"""测试卡鉴权命令处理"""
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print("开始测试卡鉴权命令处理...")
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# 创建处理器
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handler = Command191A()
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# 测试数据 - 使用实际收到的19H数据
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test_data = bytes.fromhex("4A58190317665611360637011600190109 0C152B65363961323130330000000000000014")
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print("\n测试数据:")
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print(f"19H数据: {test_data.hex().upper()}")
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# 创建模拟socket
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class MockSocket:
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def send(self, data):
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print(f"\n模拟发送响应数据:")
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print(f"1AH数据: {data.hex().upper()}")
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mock_sock = MockSocket()
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# 测试完整处理流程
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result = handler.process_and_respond(test_data, mock_sock)
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print(f"\n最终处理结果: {'成功' if result else '失败'}")
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if __name__ == "__main__":
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test_auth() |