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added wildcard option

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This commit is contained in:
Malte 2022-04-06 10:58:41 +02:00
parent 217cb2a575
commit 47cb9e742a
4 changed files with 29 additions and 12 deletions
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4
dyndns/handler/cname.go
View File

@ -79,7 +79,7 @@ func (h *Handler) CreateCName(c echo.Context) (err error) {
return c.JSON(http.StatusBadRequest, &Error{err.Error()})
}
if err = nswrapper.UpdateRecord(cname.Hostname, fmt.Sprintf("%s.%s", cname.Target.Hostname, cname.Target.Domain), "CNAME", cname.Target.Domain, cname.Ttl); err != nil {
if err = nswrapper.UpdateRecord(cname.Hostname, fmt.Sprintf("%s.%s", cname.Target.Hostname, cname.Target.Domain), "CNAME", cname.Target.Domain, cname.Ttl, h.AllowWildcard); err != nil {
return c.JSON(http.StatusBadRequest, &Error{err.Error()})
}
@ -114,7 +114,7 @@ func (h *Handler) DeleteCName(c echo.Context) (err error) {
return c.JSON(http.StatusBadRequest, &Error{err.Error()})
}
if err = nswrapper.DeleteRecord(cname.Hostname, cname.Target.Domain); err != nil {
if err = nswrapper.DeleteRecord(cname.Hostname, cname.Target.Domain, h.AllowWildcard); err != nil {
return c.JSON(http.StatusBadRequest, &Error{err.Error()})
}

16
dyndns/handler/handler.go
View File

@ -24,6 +24,7 @@ type Handler struct {
DisableAdminAuth bool
LastClearedLogs time.Time
ClearInterval uint64
AllowWildcard bool
}
type Envs struct {
@ -112,17 +113,24 @@ func (h *Handler) ParseEnvs() (adminAuth bool, err error) {
h.AuthAdmin = true
h.DisableAdminAuth = true
}
h.Title = os.Getenv("DDNS_TITLE")
if h.Title == "" {
var ok bool
h.Title, ok = os.LookupEnv("DDNS_TITLE")
if !ok {
h.Title = "TheBBCloud DynDNS"
}
allowWildcard, ok := os.LookupEnv("DDNS_ALLOW_WILDCARD")
if ok {
h.AllowWildcard, err = strconv.ParseBool(allowWildcard)
if err == nil {
log.Info("Wildcard allowed")
}
}
clearEnv := os.Getenv("DDNS_CLEAR_LOG_INTERVAL")
clearInterval, err := strconv.ParseUint(clearEnv, 10, 32)
if err != nil {
log.Info("No log clear interval found")
} else {
log.Info("log clear interval found:", clearInterval, "days")
log.Info("log clear interval found: ", clearInterval, "days")
h.ClearInterval = clearInterval
if clearInterval > 0 {
h.LastClearedLogs = time.Now()

8
dyndns/handler/host.go
View File

@ -125,7 +125,7 @@ func (h *Handler) CreateHost(c echo.Context) (err error) {
return c.JSON(http.StatusBadRequest, &Error{fmt.Sprintf("ip %s is not a valid ip", host.Ip)})
}
if err = nswrapper.UpdateRecord(host.Hostname, host.Ip, ipType, host.Domain, host.Ttl); err != nil {
if err = nswrapper.UpdateRecord(host.Hostname, host.Ip, ipType, host.Domain, host.Ttl, h.AllowWildcard); err != nil {
return c.JSON(http.StatusBadRequest, &Error{err.Error()})
}
}
@ -172,7 +172,7 @@ func (h *Handler) UpdateHost(c echo.Context) (err error) {
return c.JSON(http.StatusBadRequest, &Error{fmt.Sprintf("ip %s is not a valid ip", host.Ip)})
}
if err = nswrapper.UpdateRecord(host.Hostname, host.Ip, ipType, host.Domain, host.Ttl); err != nil {
if err = nswrapper.UpdateRecord(host.Hostname, host.Ip, ipType, host.Domain, host.Ttl, h.AllowWildcard); err != nil {
return c.JSON(http.StatusBadRequest, &Error{err.Error()})
}
}
@ -216,7 +216,7 @@ func (h *Handler) DeleteHost(c echo.Context) (err error) {
return c.JSON(http.StatusBadRequest, &Error{err.Error()})
}
if err = nswrapper.DeleteRecord(host.Hostname, host.Domain); err != nil {
if err = nswrapper.DeleteRecord(host.Hostname, host.Domain, h.AllowWildcard); err != nil {
return c.JSON(http.StatusBadRequest, &Error{err.Error()})
}
@ -276,7 +276,7 @@ func (h *Handler) UpdateIP(c echo.Context) (err error) {
}
// add/update DNS record
if err = nswrapper.UpdateRecord(log.Host.Hostname, log.SentIP, ipType, log.Host.Domain, log.Host.Ttl); err != nil {
if err = nswrapper.UpdateRecord(log.Host.Hostname, log.SentIP, ipType, log.Host.Domain, log.Host.Ttl, h.AllowWildcard); err != nil {
log.Message = fmt.Sprintf("DNS error: %v", err)
l.Error(log.Message)
if err = h.CreateLogEntry(log); err != nil {

13
dyndns/nswrapper/update.go
View File

@ -11,7 +11,7 @@ import (
)
// UpdateRecord builds a nsupdate file and updates a record by executing it with nsupdate.
func UpdateRecord(hostname string, target string, addrType string, zone string, ttl int) error {
func UpdateRecord(hostname string, target string, addrType string, zone string, ttl int, enableWildcard bool) error {
log.Info(fmt.Sprintf("%s record update request: %s -> %s", addrType, hostname, target))
f, err := ioutil.TempFile(os.TempDir(), "dyndns")
@ -25,7 +25,13 @@ func UpdateRecord(hostname string, target string, addrType string, zone string,
w.WriteString(fmt.Sprintf("server %s\n", "localhost"))
w.WriteString(fmt.Sprintf("zone %s\n", zone))
w.WriteString(fmt.Sprintf("update delete %s.%s %s\n", hostname, zone, addrType))
if enableWildcard {
w.WriteString(fmt.Sprintf("update delete %s.%s %s\n", "*."+hostname, zone, addrType))
}
w.WriteString(fmt.Sprintf("update add %s.%s %v %s %s\n", hostname, zone, ttl, addrType, target))
if enableWildcard {
w.WriteString(fmt.Sprintf("update add %s.%s %v %s %s\n", "*."+hostname, zone, ttl, addrType, target))
}
w.WriteString("send\n")
w.Flush()
@ -49,7 +55,7 @@ func UpdateRecord(hostname string, target string, addrType string, zone string,
}
// DeleteRecord builds a nsupdate file and deletes a record by executing it with nsupdate.
func DeleteRecord(hostname string, zone string) error {
func DeleteRecord(hostname string, zone string, enableWildcard bool) error {
fmt.Printf("record delete request: %s\n", hostname)
f, err := ioutil.TempFile(os.TempDir(), "dyndns")
@ -63,6 +69,9 @@ func DeleteRecord(hostname string, zone string) error {
w.WriteString(fmt.Sprintf("server %s\n", "localhost"))
w.WriteString(fmt.Sprintf("zone %s\n", zone))
w.WriteString(fmt.Sprintf("update delete %s.%s\n", hostname, zone))
if enableWildcard {
w.WriteString(fmt.Sprintf("update delete %s.%s\n", "*."+hostname, zone))
}
w.WriteString("send\n")
w.Flush()