mirror of
https://github.com/Control-D-Inc/ctrld.git
synced 2026-03-13 10:26:06 +00:00
0645a738ad
This commit add the ability for ctrld to gather client information, including mac/ip/hostname, and send to Control-D server through a config per upstream. - Add send_client_info upstream config. - Read/Watch dnsmasq leases files on supported platforms. - Add corresponding client info to DoH query header All of these only apply for Control-D upstream, though.
76 lines
1.7 KiB
Go
76 lines
1.7 KiB
Go
package router
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import (
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"bytes"
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"errors"
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"fmt"
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"os"
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"os/exec"
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"strings"
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)
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var errUCIEntryNotFound = errors.New("uci: Entry not found")
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const openwrtDNSMasqConfigPath = "/tmp/dnsmasq.d/ctrld.conf"
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func setupOpenWrt() error {
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// Delete dnsmasq port if set.
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if _, err := uci("delete", "dhcp.@dnsmasq[0].port"); err != nil && !errors.Is(err, errUCIEntryNotFound) {
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return err
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}
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// Disable dnsmasq as DNS server.
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dnsMasqConfigContent, err := dnsMasqConf()
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if err != nil {
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return err
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}
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if err := os.WriteFile(openwrtDNSMasqConfigPath, []byte(dnsMasqConfigContent), 0600); err != nil {
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return err
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}
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// Commit.
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if _, err := uci("commit"); err != nil {
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return err
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}
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// Restart dnsmasq service.
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if err := openwrtRestartDNSMasq(); err != nil {
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return err
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}
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return nil
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}
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func cleanupOpenWrt() error {
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// Remove the custom dnsmasq config
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if err := os.Remove(openwrtDNSMasqConfigPath); err != nil {
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return err
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}
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// Restart dnsmasq service.
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if err := openwrtRestartDNSMasq(); err != nil {
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return err
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}
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return nil
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}
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func postInstallOpenWrt() error {
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return exec.Command("/etc/init.d/ctrld", "enable").Run()
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}
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func uci(args ...string) (string, error) {
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cmd := exec.Command("uci", args...)
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var stdout, stderr bytes.Buffer
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cmd.Stdout = &stdout
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cmd.Stderr = &stderr
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if err := cmd.Run(); err != nil {
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if strings.HasPrefix(stderr.String(), errUCIEntryNotFound.Error()) {
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return "", errUCIEntryNotFound
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}
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return "", fmt.Errorf("%s:%w", stderr.String(), err)
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}
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return strings.TrimSpace(stdout.String()), nil
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}
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func openwrtRestartDNSMasq() error {
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if out, err := exec.Command("/etc/init.d/dnsmasq", "restart").CombinedOutput(); err != nil {
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return fmt.Errorf("%s: %w", string(out), err)
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}
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return nil
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}
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