Function _run

network_diagnostics.py:63–78

Run a command (list of args) and return {rc, out, err}. Never raises: missing binary -> rc 127, timeout -> rc 124.

(cmd, timeout=30, env=None)

_TARGET_RE = re.compile(r'^[A-Za-z0-9._:\-/]{1,255}$')
_IFACE_RE = re.compile(r'^[A-Za-z0-9._@\-]{1,32}$')


def _valid_target(t):
    return bool(t and isinstance(t, str) and t[0] != '-' and _TARGET_RE.match(t))


def _valid_iface(i):
    return bool(i and isinstance(i, str) and i[0] != '-' and _IFACE_RE.match(i))


def _clamp_int(val, default, lo, hi):
    try:
        n = int(val)
    except (TypeError, ValueError):
        return default
    return max(lo, min(hi, n))


def _run(cmd, timeout=30, env=None):