dyndns/webapi/update.go

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package webapi
import (
"errors"
"fmt"
"log"
"net"
"net/http"
"net/url"
"gitea.nehmer.net/torben/dyndns/service"
)
func init() {
router.HandleFunc("/update", handleUpdate)
}
func handleUpdate(w http.ResponseWriter, r *http.Request) {
err := r.ParseForm()
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
ur, err := createUpdateRequestFromForm(r.Form)
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
uc, err := service.LoadConfigForUser(ur.UserName, ur.Password)
if err != nil {
if _, ok := err.(*service.UnauthorizedError); ok {
http.Error(w, err.Error(), http.StatusUnauthorized)
} else {
http.Error(w, err.Error(), http.StatusInternalServerError)
}
log.Printf("Authorization failed: %v", err)
return
}
ur.Config = uc
// Start DEBUG Output
log.Println("Final request")
log.Println(ur.PrettyPrint())
for _, other := range uc.Others {
log.Printf("Other %s, IID %v, merged: %v",
other.Hostname, other.V6IID, other.ConvertIIDToAddress(ur.IPv6Net))
}
log.Println("WebAPI Config:")
log.Println(C.PrettyPrint())
log.Println("Service Config:")
log.Println(service.C.PrettyPrint())
// End DEBUG Output
if err := ur.Process(); err != nil {
log.Printf("failed to process UpdateRequest: %v", err)
http.Error(w, err.Error(), http.StatusInternalServerError)
}
w.Header().Set("Content-Type", "text/plain")
fmt.Fprintln(w, "OK")
}
func createUpdateRequestFromForm(form url.Values) (*service.UpdateRequest, error) {
ur := &service.UpdateRequest{}
if form.Get("IPv4") != "" {
if ur.IPv4 = net.ParseIP(form.Get("IPv4")); ur.IPv4 == nil {
return nil, errors.New("could not parse IPv4 address")
}
}
if form.Get("IPv6") != "" {
if ur.IPv6 = net.ParseIP(form.Get("IPv6")); ur.IPv6 == nil {
return nil, errors.New("could not parse IPv6 address")
}
}
ur.UserName = form.Get("UserName")
if ur.UserName == "" {
return nil, errors.New("a UserName must be specified")
}
ur.Password = form.Get("Password")
if ur.Password == "" {
return nil, errors.New("a Password must be specified")
}
if ip6net := form.Get("IPv6Net"); ip6net != "" {
_, ipnet, err := net.ParseCIDR(ip6net)
if err != nil {
return nil, errors.New("could not parse IPv6Net")
}
ur.IPv6Net = ipnet
}
return ur, nil
}