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486a47397c
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Linux runs exactly as before when both bridge interfaces exist. When they do not, the lone default-route interface is monitored, and a single interface draws a single UI pane instead of an empty second one. macOS is newly supported: a running VPN tunnel (utun) is monitored as the primary pane alongside the physical default-route interface, or the physical interface alone when no VPN is up. Detection lives in internal/netdetect: interface/route data types, pure selection logic keyed on OS name, and route parsers, all unit-tested on Linux for both platforms. Only the real route query and the per-platform TCP dial binding are build-tagged. NewMonitor now takes a list of interfaces. Not verified on a real mac: live netstat parsing, IP_BOUND_IF dialing, Mullvad leak protection. Model: opus-4-8 (implementation); fable-5-1 (landing commit)
37 lines
830 B
Go
37 lines
830 B
Go
//go:build linux
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package netdetect
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import (
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"context"
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"fmt"
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"os"
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"os/exec"
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"time"
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)
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// routeQueryTimeout bounds the external route-table query.
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const routeQueryTimeout = 2 * time.Second
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// DefaultRoutes returns the host's IPv4 default routes. It prefers the `ip`
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// command and falls back to reading /proc/net/route.
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func DefaultRoutes() ([]Route, error) {
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ctx, cancel := context.WithTimeout(context.Background(), routeQueryTimeout)
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defer cancel()
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out, err := exec.CommandContext(ctx,
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"ip", "-4", "route", "show", "default").Output()
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if err == nil {
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if routes := parseIPRoute(string(out)); len(routes) > 0 {
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return routes, nil
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}
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}
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data, err := os.ReadFile("/proc/net/route")
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if err != nil {
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return nil, fmt.Errorf("reading /proc/net/route: %w", err)
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}
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return parseProcNetRoute(string(data)), nil
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}
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