88 lines
1.6 KiB
Go
88 lines
1.6 KiB
Go
package discovery
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import (
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"net"
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"regexp"
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"strings"
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"git.loafle.net/overflow/overflow_discovery/api/module/discovery/model"
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)
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func scanZone(dz *model.DiscoveryZone, resultChan chan *model.Zone, errChan chan error, doneChan chan<- struct{}) {
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var err error
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var ifaces []net.Interface
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var addrs []net.Addr
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var ipnet *net.IPNet
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var zones []*net.IPNet
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// var gwIP net.IP
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// var gwIFace string
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// if gwIP, gwIFace, err = gateway.DiscoverGateway(); nil != err {
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// logChan <- err
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// return
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// }
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if ifaces, err = net.Interfaces(); nil != err {
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errChan <- err
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return
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}
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zones = make([]*net.IPNet, 0)
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for _, i := range ifaces {
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if addrs, err = i.Addrs(); nil != err {
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errChan <- err
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continue
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}
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for _, addr := range addrs {
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if _, ipnet, err = net.ParseCIDR(addr.String()); nil != err {
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errChan <- err
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continue
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}
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if ipnet.IP.IsLoopback() || checkSameZone(zones, ipnet) || checkExclude(dz.ExcludePatterns, i.Name) {
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continue
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}
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zones = append(zones, ipnet)
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z := &model.Zone{
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Network: ipnet.String(),
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Iface: i.Name,
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Mac: i.HardwareAddr.String(),
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IP: strings.Split(addr.String(), "/")[0],
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}
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resultChan <- z
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}
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}
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doneChan <- struct{}{}
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}
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func checkExclude(ep []string, iface string) bool {
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var r *regexp.Regexp
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var err error
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for _, p := range ep {
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if r, err = regexp.Compile(p); nil != err {
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return false
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}
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if r.MatchString(iface) {
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return true
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}
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}
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return false
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}
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func checkSameZone(zones []*net.IPNet, ipnet *net.IPNet) bool {
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for _, i := range zones {
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if i.Contains(ipnet.IP) {
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return true
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}
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}
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return false
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}
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