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https://github.com/jlu5/SupyPlugins.git
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59 lines
2.0 KiB
Python
59 lines
2.0 KiB
Python
import re
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import sys
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import subprocess
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from dataclasses import dataclass, field
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from typing import List
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@dataclass
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class TraceHop:
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ip: str
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ptr: str
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@dataclass
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class TraceResult:
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hops: List[TraceHop]
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latency: str = field(default=None)
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notes: List[str] = field(default_factory=list)
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class TraceParseError(ValueError):
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pass
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# bird-lg-go enables DNS lookups and sends one query by default, but we should be a bit more flexible with what we accept
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# This will grab IPs from whichever format is used, and report the first latency / error code of the last line if there are multiple queries
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_TRACEROUTE_RE = re.compile(r'\s*\d+\s+(?P<line>(?:(?P<ptr>[^() ]+) \((?P<IPdns>[0-9a-fA-F.:]+)\)|(?P<IPbare>[0-9a-fA-F.:]+)).*? (?P<latency>[0-9.]+ ms( \![A-Za-z0-9]+)?)|\*)')
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def parse_traceroute(text):
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lines = text.strip().splitlines()
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if len(lines) < 2 or not lines[1].lstrip().startswith("1"):
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# Assume error condition if 2nd line doesn't start with "1" (first hop)
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raise TraceParseError(' '.join(lines) or "traceroute returned empty output")
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else:
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hops = []
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notes = []
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latency = None
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for line in lines[1:]:
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if not line.strip():
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continue
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m = _TRACEROUTE_RE.match(line)
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if not m:
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notes.append(line)
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continue
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ip = m.group("IPdns") or m.group("IPbare") or m.group("line")
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ptr = m.group("ptr") or ip
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hops.append(TraceHop(ip, ptr))
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latency = m.group("latency")
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# bird-lg-go specific truncation
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if "hops not responding" in ''.join(notes):
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latency = None
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return TraceResult(hops, latency, notes)
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if __name__ == '__main__':
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proc = subprocess.run(['traceroute', *sys.argv[1:]], encoding='utf-8', stdout=subprocess.PIPE)
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print(parse_traceroute(proc.stdout))
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if proc.returncode:
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print("traceroute exited with code", proc.returncode)
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sys.exit(proc.returncode)
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