85 lines
1.5 KiB
Go
85 lines
1.5 KiB
Go
// Copyright Safing ICS Technologies GmbH. Use of this source code is governed by the AGPL license that can be found in the LICENSE file.
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package network
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import (
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"time"
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"github.com/Safing/portmaster/process"
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)
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var (
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cleanerTickDuration = 1 * time.Minute
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deadLinksTimeout = 5 * time.Minute
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thresholdDuration = 1 * time.Minute
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)
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func cleaner() {
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for {
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time.Sleep(cleanerTickDuration)
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cleanLinks()
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time.Sleep(10 * time.Second)
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cleanConnections()
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time.Sleep(10 * time.Second)
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cleanProcesses()
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}
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}
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func cleanLinks() {
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activeIDs := process.GetActiveConnectionIDs()
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now := time.Now().Unix()
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deleteOlderThan := time.Now().Add(-deadLinksTimeout).Unix()
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linksLock.RLock()
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defer linksLock.RUnlock()
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var found bool
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for key, link := range links {
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// delete dead links
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link.Lock()
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deleteThis := link.Ended > 0 && link.Ended < deleteOlderThan
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link.Unlock()
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if deleteThis {
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go link.Delete()
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continue
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}
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// check if link is dead
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found = false
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for _, activeID := range activeIDs {
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if key == activeID {
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found = true
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break
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}
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}
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// mark end time
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if !found {
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link.Ended = now
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go link.Save()
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}
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}
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}
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func cleanConnections() {
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connectionsLock.RLock()
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defer connectionsLock.RUnlock()
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threshold := time.Now().Add(-thresholdDuration).Unix()
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for _, conn := range connections {
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conn.Lock()
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if conn.FirstLinkEstablished < threshold && conn.LinkCount == 0 {
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go conn.Delete()
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}
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conn.Unlock()
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}
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}
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func cleanProcesses() {
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process.CleanProcessStorage(thresholdDuration)
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}
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