114 lines
2.6 KiB
Python
114 lines
2.6 KiB
Python
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import os
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import sys
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import struct
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import dataclasses
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from bin.log import myprint
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from bin.log import mywrite
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STR_YELLOW="\033[0;33m"
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STR_END="\033[0m"
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@dataclasses.dataclass
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class cli_msg_hdr_t:
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src_mac:bytearray
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target_mac:bytearray
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module_id:int
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cli_crc:int
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msg_id:int
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auto_ack:int
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reserved2:int
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msg_len:int
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sn:int
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@classmethod
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def __init__(self, data:bytearray):
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self.src_mac=data[0:6]
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self.target_mac=data[6:12]
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self.module_id=struct.unpack("<H", data[12:14])[0]
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self.cli_crc=struct.unpack("<H", data[14:16])[0]
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self.msg_id=struct.unpack("<H", data[16:18])[0]
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self.auto_ack=struct.unpack("<B", data[18:19])[0]&0x01
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self.reserved2=struct.unpack("<B", data[19:20])[0]
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self.msg_len=struct.unpack("<H", data[20:22])[0]
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self.sn=struct.unpack("<H", data[22:24])[0]
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@dataclasses.dataclass
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class payload_t:
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fw_version:int
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time_stamp:int
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seq:int
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mod_msg:int
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payload_len:int
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@classmethod
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def __init__(self, data:bytearray):
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self.fw_version=struct.unpack("<I", data[0:4])[0]
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self.time_stamp=struct.unpack("<I", data[4:8])[0]
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self.seq=struct.unpack("<I", data[8:12])[0]
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self.mod_msg=struct.unpack("<I", data[12:16])[0]
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self.payload_len=struct.unpack("<I", data[16:20])[0]>>16
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def get_log(log_file:str):
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with open(log_file, 'rb') as f:
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data=f.read()
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save=data[0x143000:0x144580]
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with open("save.bin", 'wb+') as f:
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f.write(save)
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def find_log(data):
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for i in range(0, len(data), 0x20):
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if data[i:i+2]==b'$$':
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myprint(f"log offset={hex(i)}")
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return i
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return -1
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def print_log(log_file:str):
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with open(log_file, 'rb') as f:
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data=f.read()
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off=0
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# addr表示相对于bin文件的地址
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addr=off
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if(off<0):
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myprint("not found log")
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return
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data=data[off:]
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while len(data)>0:
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off=data.find(b'$$')
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if(off<0):
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break
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addr+=off
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myprint(f"off={hex(addr)}")
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data=data[off+2:]
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addr+=2
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end=data.find(b'&&')
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if(end<0):
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break
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a=cli_msg_hdr_t(data[0:24])
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# msg_len减去的是payload的长度
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myprint(f"msg_len={a.msg_len-20}")
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if(a.msg_len!=end-24):
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myprint(f"msg_len error")
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continue
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# a=payload_t(data[24:44])
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# print(a)
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pstr=data[44:end]
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for i in range(len(pstr)):
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if(pstr[i]&0x80):
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pstr=pstr[:i]
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break
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try:
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mywrite(f"{pstr.decode('utf-8')}")
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except:
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mywrite(f"{pstr}")
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if __name__ == '__main__':
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if len(sys.argv) != 2:
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print("Usage: python get_log.py <log_file>")
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sys.exit(1)
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log_file = sys.argv[1]
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print_log(log_file)
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