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30320ec9c7
On Darwin, modifying /etc/resolv.conf directly does not change interface network settings. Thus the networksetup command uses to set DNS does not do anything. To fix this, after setting DNS using networksetup, re-check the content of /etc/resolv.conf file to see if the nameservers are what we expected. Otherwise, re-generate the file with proper nameservers.
50 lines
1.0 KiB
Go
50 lines
1.0 KiB
Go
package cli
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import (
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"net"
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"net/netip"
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"os"
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"slices"
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"github.com/Control-D-Inc/ctrld/internal/dns/resolvconffile"
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)
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const resolvConfPath = "/etc/resolv.conf"
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// setResolvConf sets the content of resolv.conf file using the given nameservers list.
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func setResolvConf(iface *net.Interface, ns []netip.Addr) error {
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servers := make([]string, len(ns))
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for i := range ns {
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servers[i] = ns[i].String()
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}
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if err := setDNS(iface, servers); err != nil {
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return err
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}
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slices.Sort(servers)
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curNs := currentDNS(iface)
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slices.Sort(curNs)
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if !slices.Equal(curNs, servers) {
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c, err := resolvconffile.ParseFile(resolvConfPath)
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if err != nil {
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return err
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}
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c.Nameservers = ns
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f, err := os.Create(resolvConfPath)
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if err != nil {
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return err
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}
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defer f.Close()
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if err := c.Write(f); err != nil {
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return err
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}
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return f.Close()
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}
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return nil
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}
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// shouldWatchResolvconf reports whether ctrld should watch changes to resolv.conf file with given OS configurator.
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func shouldWatchResolvconf() bool {
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return true
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}
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