Georg/nftables-http-api-go
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Correctly return set elements on GET

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Signed-off-by: Georg Pfuetzenreuter <mail@georg-pfuetzenreuter.net>
This commit is contained in:
Georg Pfuetzenreuter 2024-08-30 18:26:57 +02:00
parent f402bce96b
commit 73c788181e
Signed by: Georg
GPG Key ID: 1ED2F138E7E6FF57
3 changed files with 27 additions and 5 deletions
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9
nft.go
View File

@ -14,6 +14,7 @@ package main
import (
"github.com/google/nftables"
"log"
"net"
)
type nftError struct {
@ -79,6 +80,7 @@ func getNftSet(nft *nftables.Conn, setName string) (*nftables.Set, error) {
log.Printf("Set lookup for %s failed, cannot proceed: %s", setName, err)
return nil, err
}
log.Printf("Found set %s", foundSet.Name)
return foundSet, nil
}
@ -97,9 +99,10 @@ func getNftSetElements(nft *nftables.Conn, setName string) ([]string, error) {
var returnElements []string
for _, element := range setElements {
log.Printf("element: %s", element.Key)
returnElements = append(returnElements, string(element.Key))
for i, element := range setElements {
ip := net.IP(element.Key)
log.Printf("Element %d: %s", i, ip)
returnElements = append(returnElements, ip.String())
}
return returnElements, nil

3
nftables-http-api.go
View File

@ -18,7 +18,6 @@ import (
"log"
"net/http"
"os"
"strings"
)
var config Config
@ -108,7 +107,7 @@ func handleSetRoute(w http.ResponseWriter, r *http.Request) {
doReturn(w, http.StatusInternalServerError, "nftables failure")
}
if nftResult != nil {
doReturn(w, http.StatusOK, strings.Join(nftResult.([]string), ""))
doReturnSet(w, http.StatusOK, "", nftResult.([]string))
}
}
}

20
utils.go
View File

@ -25,6 +25,11 @@ type Response struct {
RResult string `json:"result,omitempty"`
}
type ResponseSet struct {
RError string `json:"error,omitempty"`
RResult []string `json:"result,omitempty"`
}
func doReturn(w http.ResponseWriter, status int, text string) {
var response any
if status == http.StatusOK {
@ -40,6 +45,21 @@ func doReturn(w http.ResponseWriter, status int, text string) {
w.Write(j)
}
func doReturnSet(w http.ResponseWriter, status int, text string, elements []string) {
var response any
if status == http.StatusOK {
response = ResponseSet{RResult: elements}
} else {
response = Response{RError: text}
}
j, err := json.Marshal(response)
if err != nil {
log.Fatalf("Failed to marshal JSON: %s", err)
}
w.WriteHeader(status)
w.Write(j)
}
func doCheckToken(token string, hash string) bool {
err := bcrypt.CompareHashAndPassword([]byte(hash), []byte(token))
if err == nil {