eduard256
4d6c2fd878
Fast (~1-3s) endpoint that gathers network info about a device before full stream discovery. Runs ping first, then parallel probes. Features: - Ping with ICMP + TCP fallback (works without root) - Reverse DNS hostname lookup - ARP table MAC address + OUI vendor identification (2403 entries, 51 camera vendors) - mDNS HomeKit detection (camera/doorbell, paired status) - Extensible Prober interface for adding new probe types - 3-second overall timeout, parallel execution Response includes "type" field: - "unreachable" - device not responding - "standard" - normal IP camera (RTSP/HTTP/ONVIF flow) - "homekit" - Apple HomeKit camera (PIN pairing flow)
58 lines
1.7 KiB
Go
58 lines
1.7 KiB
Go
package discovery
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import (
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"context"
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"github.com/AlexxIT/go2rtc/pkg/hap"
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"github.com/AlexxIT/go2rtc/pkg/mdns"
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"github.com/eduard256/Strix/internal/models"
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)
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// MDNSProber performs mDNS unicast query to detect HomeKit devices.
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// It sends a DNS query to ip:5353 for the _hap._tcp.local. service
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// and parses TXT records to extract device information.
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type MDNSProber struct{}
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func (p *MDNSProber) Name() string { return "mdns" }
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// Probe queries the device for HomeKit (HAP) mDNS service.
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// Returns nil if the device does not advertise HomeKit or is not a camera/doorbell.
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func (p *MDNSProber) Probe(ctx context.Context, ip string) (any, error) {
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// Unicast mDNS query directly to the device IP.
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// mdns.Query has internal timeouts (~1s), which fits within our 3s budget.
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entry, err := mdns.Query(ip, mdns.ServiceHAP)
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if err != nil || entry == nil {
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return nil, nil // Not a HomeKit device is not an error
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}
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// Check if it's complete (has IP, port, and TXT records)
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if !entry.Complete() {
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return nil, nil
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}
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// Check if it's a camera or doorbell
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category := entry.Info[hap.TXTCategory]
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if category != hap.CategoryCamera && category != hap.CategoryDoorbell {
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return nil, nil // Not a camera/doorbell, ignore
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}
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// Map category ID to human-readable name
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categoryName := "camera"
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if category == hap.CategoryDoorbell {
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categoryName = "doorbell"
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}
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// Determine paired status: sf=0 means paired, sf=1 means not paired
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paired := entry.Info[hap.TXTStatusFlags] == hap.StatusPaired
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return &models.MDNSProbeResult{
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Name: entry.Name,
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DeviceID: entry.Info[hap.TXTDeviceID],
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Model: entry.Info[hap.TXTModel],
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Category: categoryName,
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Paired: paired,
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Port: int(entry.Port),
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Feature: entry.Info[hap.TXTFeatureFlags],
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}, nil
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}
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