mirror of
https://github.com/gravitl/netmaker.git
synced 2024-11-10 17:48:25 +08:00
239 lines
8.1 KiB
Go
239 lines
8.1 KiB
Go
package controller
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import (
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"crypto/ed25519"
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"crypto/x509"
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"crypto/x509/pkix"
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"encoding/json"
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"fmt"
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"net/http"
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"strings"
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"github.com/gorilla/mux"
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"github.com/gravitl/netmaker/logger"
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"github.com/gravitl/netmaker/logic"
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"github.com/gravitl/netmaker/models"
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"github.com/gravitl/netmaker/netclient/config"
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"github.com/gravitl/netmaker/netclient/ncutils"
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"github.com/gravitl/netmaker/servercfg"
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"github.com/gravitl/netmaker/tls"
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)
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func serverHandlers(r *mux.Router) {
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// r.HandleFunc("/api/server/addnetwork/{network}", securityCheckServer(true, http.HandlerFunc(addNetwork))).Methods("POST")
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r.HandleFunc("/api/server/getconfig", securityCheckServer(false, http.HandlerFunc(getConfig))).Methods("GET")
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r.HandleFunc("/api/server/removenetwork/{network}", securityCheckServer(true, http.HandlerFunc(removeNetwork))).Methods("DELETE")
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r.HandleFunc("/api/server/register", http.HandlerFunc(register)).Methods("POST")
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}
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//Security check is middleware for every function and just checks to make sure that its the master calling
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//Only admin should have access to all these network-level actions
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//or maybe some Users once implemented
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func securityCheckServer(adminonly bool, next http.Handler) http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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var errorResponse = models.ErrorResponse{
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Code: http.StatusInternalServerError, Message: "W1R3: It's not you it's me.",
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}
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bearerToken := r.Header.Get("Authorization")
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var tokenSplit = strings.Split(bearerToken, " ")
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var authToken = ""
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if len(tokenSplit) < 2 {
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errorResponse = models.ErrorResponse{
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Code: http.StatusUnauthorized, Message: "W1R3: You are unauthorized to access this endpoint.",
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}
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returnErrorResponse(w, r, errorResponse)
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return
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} else {
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authToken = tokenSplit[1]
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}
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//all endpoints here require master so not as complicated
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//still might not be a good way of doing this
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user, _, isadmin, err := logic.VerifyUserToken(authToken)
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errorResponse = models.ErrorResponse{
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Code: http.StatusUnauthorized, Message: "W1R3: You are unauthorized to access this endpoint.",
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}
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if !adminonly && (err != nil || user == "") {
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returnErrorResponse(w, r, errorResponse)
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return
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}
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if adminonly && !isadmin && !authenticateMaster(authToken) {
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returnErrorResponse(w, r, errorResponse)
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return
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}
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next.ServeHTTP(w, r)
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}
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}
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func removeNetwork(w http.ResponseWriter, r *http.Request) {
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// Set header
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w.Header().Set("Content-Type", "application/json")
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// get params
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var params = mux.Vars(r)
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err := logic.DeleteNetwork(params["network"])
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if err != nil {
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json.NewEncoder(w).Encode("Could not remove server from network " + params["network"])
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return
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}
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json.NewEncoder(w).Encode("Server removed from network " + params["network"])
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}
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func getConfig(w http.ResponseWriter, r *http.Request) {
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// Set header
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w.Header().Set("Content-Type", "application/json")
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// get params
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scfg := servercfg.GetServerConfig()
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json.NewEncoder(w).Encode(scfg)
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//w.WriteHeader(http.StatusOK)
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}
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// func addNetwork(w http.ResponseWriter, r *http.Request) {
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// // Set header
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// w.Header().Set("Content-Type", "application/json")
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// // get params
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// var params = mux.Vars(r)
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// var networkName = params["network"]
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// var networkSettings, err := logic.GetNetwork(netwnetworkName)
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// success, err := serverctl.AddNetwork(params["network"])
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// if err != nil || !success {
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// json.NewEncoder(w).Encode("Could not add server to network " + params["network"])
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// return
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// }
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// json.NewEncoder(w).Encode("Server added to network " + params["network"])
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// }
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// register - registers a client with the server and return the CA and cert
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func register(w http.ResponseWriter, r *http.Request) {
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logger.Log(2, "processing registration request")
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w.Header().Set("Content-Type", "application/json")
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bearerToken := r.Header.Get("Authorization")
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var tokenSplit = strings.Split(bearerToken, " ")
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var token = ""
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if len(tokenSplit) < 2 {
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errorResponse := models.ErrorResponse{
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Code: http.StatusUnauthorized, Message: "W1R3: You are unauthorized to access this endpoint.",
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}
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returnErrorResponse(w, r, errorResponse)
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return
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} else {
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token = tokenSplit[1]
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}
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//decode body
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var request config.RegisterRequest
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if err := json.NewDecoder(r.Body).Decode(&request); err != nil {
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logger.Log(0, "error decoding request", err.Error())
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errorResponse := models.ErrorResponse{
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Code: http.StatusBadRequest, Message: err.Error(),
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}
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returnErrorResponse(w, r, errorResponse)
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return
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}
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found := false
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networks, err := logic.GetNetworks()
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if err != nil {
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logger.Log(0, "no networks", err.Error())
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errorResponse := models.ErrorResponse{
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Code: http.StatusNotFound, Message: "no networks",
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}
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returnErrorResponse(w, r, errorResponse)
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return
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}
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for _, network := range networks {
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for _, key := range network.AccessKeys {
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if key.Value == token {
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found = true
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break
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}
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}
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}
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if !found {
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logger.Log(0, "valid access key not found")
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errorResponse := models.ErrorResponse{
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Code: http.StatusUnauthorized, Message: "You are unauthorized to access this endpoint.",
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}
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returnErrorResponse(w, r, errorResponse)
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return
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}
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cert, ca, err := genCerts(&request.Key, &request.CommonName)
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if err != nil {
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logger.Log(0, "failed to generater certs ", err.Error())
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errorResponse := models.ErrorResponse{
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Code: http.StatusNotFound, Message: err.Error(),
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}
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returnErrorResponse(w, r, errorResponse)
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return
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}
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tls.SaveCert("/tmp/sent/", "root.pem", ca)
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tls.SaveCert("/tmp/sent/", "client.pem", cert)
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//x509.Certificate.PublicKey is an interface therefore json encoding/decoding result in a string value rather than a []byte
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//include the actual public key so the certificate can be properly reassembled on the other end.
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response := config.RegisterResponse{
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CA: *ca,
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CAPubKey: (ca.PublicKey).(ed25519.PublicKey),
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Cert: *cert,
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CertPubKey: (cert.PublicKey).(ed25519.PublicKey),
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}
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w.WriteHeader(http.StatusOK)
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json.NewEncoder(w).Encode(response)
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}
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// genCerts generates a client certificate and returns the certificate and root CA
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func genCerts(clientKey *ed25519.PrivateKey, name *pkix.Name) (*x509.Certificate, *x509.Certificate, error) {
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ca, err := tls.ReadCert("/etc/netmaker/root.pem")
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if err != nil {
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logger.Log(2, "root ca not found ", err.Error())
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return nil, nil, fmt.Errorf("root ca not found %w", err)
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}
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key, err := tls.ReadKey("/etc/netmaker/root.key")
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if err != nil {
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logger.Log(2, "root key not found ", err.Error())
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return nil, nil, fmt.Errorf("root key not found %w", err)
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}
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csr, err := tls.NewCSR(*clientKey, *name)
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if err != nil {
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logger.Log(2, "failed to generate client certificate requests", err.Error())
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return nil, nil, fmt.Errorf("client certification request generation failed %w", err)
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}
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cert, err := tls.NewEndEntityCert(*key, csr, ca, tls.CERTIFICATE_VALIDITY)
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if err != nil {
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logger.Log(2, "unable to generate client certificate", err.Error())
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return nil, nil, fmt.Errorf("client certification generation failed %w", err)
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}
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return cert, ca, nil
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}
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// genCerts generates a client certificate using calls to openssl and returns the certificate and root CA
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func genOpenSSLCerts(key *ed25519.PrivateKey, name *pkix.Name) (*x509.Certificate, *x509.Certificate, error) {
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if err := tls.SaveKey("/tmp/", "client.key", *key); err != nil {
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return nil, nil, fmt.Errorf("failed to store client key %w", err)
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}
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cmd2 := fmt.Sprintf("openssl req -new -out /tmp/client.csr -key /tmp/client.key -subj /CN=%s", name.CommonName)
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cmd3 := "openssl x509 -req -in /tmp/client.csr -days 365 -CA /etc/netmaker/root.pem -CAkey /etc/netmaker/root.key -CAcreateserial -out /tmp/client.pem"
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if _, err := ncutils.RunCmd(cmd2, true); err != nil {
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return nil, nil, fmt.Errorf("client csr error %w", err)
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}
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if _, err := ncutils.RunCmd(cmd3, true); err != nil {
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return nil, nil, fmt.Errorf("client cert error %w", err)
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}
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cert, err := tls.ReadCert("/tmp/client.pem")
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if err != nil {
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return nil, nil, fmt.Errorf("read client cert error %w", err)
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}
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ca, err := tls.ReadCert("/etc/netmaker/root.pem")
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if err != nil {
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return nil, nil, fmt.Errorf("read ca cert error %w", err)
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}
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return cert, ca, nil
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}
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