mikhmon-fix/debug-bytes.py

import socket, hashlib

class RouterOSApi:
    def __init__(self, host, port=8728):
        self.host = host; self.port = port; self.sock = None
    def connect(self, username, password):
        self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        self.sock.settimeout(10)
        self.sock.connect((self.host, self.port))
        self._write_sentence('/login', f'=name={username}', f'=password={password}')
        resp = self._read_response()
        if any(isinstance(r, tuple) and r[0] == '!trap' for r in resp):
            chal = None
            for item in resp:
                if isinstance(item, dict) and 'ret' in item: chal = item['ret']
            if chal and len(chal) == 32:
                response = '00' + hashlib.md5(b'\x00' + password.encode() + bytes.fromhex(chal)).hexdigest()
                self._write_sentence('/login', f'=name={username}', f'=response={response}')
                resp = self._read_response()
        return self
    def _encode_length(self, length):
        if length < 0x80: return bytes([length])
        elif length < 0x4000: length |= 0x8000; return bytes([(length>>8)&0xFF, length&0xFF])
        elif length < 0x200000: length |= 0xC00000; return bytes([(length>>16)&0xFF, (length>>8)&0xFF, length&0xFF])
        elif length < 0x10000000: length |= 0xE0000000; return bytes([(length>>24)&0xFF, (length>>16)&0xFF, (length>>8)&0xFF, length&0xFF])
        else: return bytes([0xF0, (length>>24)&0xFF, (length>>16)&0xFF, (length>>8)&0xFF, length&0xFF])
    def _write_word(self, word): self.sock.sendall(self._encode_length(len(word)) + word.encode('utf-8'))
    def _write_sentence(self, cmd, *words):
        self._write_word(cmd)
        for w in words: self._write_word(w)
        self.sock.sendall(b'\x00')
    def _read_byte(self): return self.sock.recv(1)
    def _read_word_raw(self):
        """Read a word and return raw bytes"""
        first = self._read_byte()
        if first == b'\x00': return None
        lb = first[0]
        if lb & 0x80:
            if (lb & 0xC0) == 0x80: length = ((lb & 0x3F) << 8) + self._read_byte()[0]
            elif (lb & 0xE0) == 0xC0: length = ((lb & 0x1F) << 16) + (self._read_byte()[0] << 8) + self._read_byte()[0]
            elif (lb & 0xF0) == 0xE0: length = ((lb & 0x0F) << 24) + (self._read_byte()[0] << 16) + (self._read_byte()[0] << 8) + self._read_byte()[0]
            else: length = (self._read_byte()[0] << 24) + (self._read_byte()[0] << 16) + (self._read_byte()[0] << 8) + self._read_byte()[0]
        else: length = lb
        data = b''
        while len(data) < length:
            chunk = self.sock.recv(length - len(data))
            if not chunk: break
            data += chunk
        return data
    def _read_sentence(self):
        words = []
        while True:
            w = self._read_word_raw()
            if w is None: break
            words.append(w)
        return words
    def _read_response(self):
        responses = []
        while True:
            sentence = self._read_sentence()
            if not sentence: break
            reply = sentence[0].decode('utf-8', errors='replace')
            rest = sentence[1:]
            if reply == '!done': break
            elif reply == '!re':
                d = {}
                for w in rest:
                    ws = w.decode('utf-8', errors='replace')
                    if '=' in ws:
                        parts = ws.split('=', 2)
                        d[parts[1]] = parts[2] if len(parts) >= 3 else ''
                    else: d[ws] = ''
                responses.append(d)
            elif reply == '!trap':
                responses.append(('!trap', [r.decode('utf-8', errors='replace') for r in rest]))
        return responses
    def _read_response_raw(self):
        """Read and return raw sentences without decoding"""
        sentences = []
        while True:
            sentence = self._read_sentence()
            if not sentence: break
            reply = sentence[0]
            rest = sentence[1:]
            if reply == b'!done': break
            sentences.append((reply, rest))
        return sentences
    def cmd(self, command, **attrs):
        words = [command]
        for k, v in attrs.items():
            if k.startswith('?'): words.append(f'{k}={v}')
            else: words.append(f'={k}={v}')
        self._write_sentence(*words)
        return self._read_response()
    def close(self):
        if self.sock: self.sock.close(); self.sock = None

api = RouterOSApi('192.168.100.2')
api.connect('mi4', 'm14')

# Read raw bytes of Bulanan2 on-event
words = [command:= '/system/scheduler/print']
words.append('?name=Bulanan2')
api._write_sentence(*words)
raw_resp = api._read_response_raw()

# Find the on-event field
for reply, rest in raw_resp:
    if reply == b'!re':
        for w in rest:
            ws = w.decode('utf-8', errors='replace')
            if ws.startswith('=on-event='):
                # Get raw bytes after '=on-event='
                prefix = b'=on-event='
                idx = w.find(prefix)
                if idx >= 0:
                    on_event_bytes = w[idx + len(prefix):]
                    print(f"on-event raw bytes length: {len(on_event_bytes)}")
                    
                    # Find all occurrences of :pic in raw bytes
                    search = b':pic'
                    pos = 0
                    while True:
                        pos = on_event_bytes.find(search, pos)
                        if pos == -1: break
                        context = on_event_bytes[max(0,pos-5):pos+20]
                        print(f"\n  ':pic' at byte {pos}")
                        print(f"  Hex: {' '.join(f'{b:02x}' for b in context)}")
                        print(f"  ASCII: {''.join(chr(b) if 32 <= b < 127 else '?' for b in context)}")
                        # Show what follows each :pic
                        after = on_event_bytes[pos:pos+10]
                        print(f"  Next 10 bytes: {' '.join(f'{b:02x}' for b in after)}")
                        pos += 4

api.close()