Linux-Help/ovpn-admin
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refactoring

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This commit is contained in:
Ilya Sosnovsky 2022-08-12 13:52:45 +03:00
parent 0dfe9f9494
commit d012141b51
2 changed files with 123 additions and 60 deletions
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15
helpers.go
View file

@ -141,6 +141,21 @@ func fCopy(src, dst string) error {
return err
}
func fMove(src, dst string) error {
err := fCopy(src, dst)
if err != nil {
log.Warn(err)
return err
}
err = fDelete(src)
if err != nil {
log.Warn(err)
return err
}
return nil
}
func fDownload(path, url string, basicAuth bool) error {
client := &http.Client{}
req, err := http.NewRequest("GET", url, nil)

168
main.go
View file

@ -7,6 +7,7 @@ import (
"crypto/x509"
"encoding/json"
"encoding/pem"
"errors"
"fmt"
"github.com/google/uuid"
"io/ioutil"
@ -22,6 +23,7 @@ import (
"sync"
"text/template"
"time"
"unicode/utf8"
"github.com/gobuffalo/packr/v2"
"github.com/prometheus/client_golang/prometheus"
@ -282,7 +284,13 @@ func (oAdmin *OvpnAdmin) userRotateHandler(w http.ResponseWriter, r *http.Reques
return
}
_ = r.ParseForm()
fmt.Fprintf(w, "%s", oAdmin.userRotate(r.FormValue("username"), r.FormValue("password")))
err, msg := oAdmin.userRotate(r.FormValue("username"), r.FormValue("password"))
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
} else {
w.WriteHeader(http.StatusOK)
fmt.Fprintf(w, msg)
}
}
func (oAdmin *OvpnAdmin) userDeleteHandler(w http.ResponseWriter, r *http.Request) {
@ -292,7 +300,13 @@ func (oAdmin *OvpnAdmin) userDeleteHandler(w http.ResponseWriter, r *http.Reques
return
}
_ = r.ParseForm()
fmt.Fprintf(w, "%s", oAdmin.userDelete(r.FormValue("username")))
err, msg := oAdmin.userDelete(r.FormValue("username"))
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
} else {
w.WriteHeader(http.StatusOK)
fmt.Fprintf(w, msg)
}
}
func (oAdmin *OvpnAdmin) userRevokeHandler(w http.ResponseWriter, r *http.Request) {
@ -302,7 +316,13 @@ func (oAdmin *OvpnAdmin) userRevokeHandler(w http.ResponseWriter, r *http.Reques
return
}
_ = r.ParseForm()
fmt.Fprintf(w, "%s", oAdmin.userRevoke(r.FormValue("username")))
err, msg := oAdmin.userRevoke(r.FormValue("username"))
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
} else {
w.WriteHeader(http.StatusOK)
fmt.Fprintf(w, msg)
}
}
func (oAdmin *OvpnAdmin) userUnrevokeHandler(w http.ResponseWriter, r *http.Request) {
@ -311,24 +331,28 @@ func (oAdmin *OvpnAdmin) userUnrevokeHandler(w http.ResponseWriter, r *http.Requ
http.Error(w, `{"status":"error"}`, http.StatusLocked)
return
}
_ = r.ParseForm()
fmt.Fprintf(w, "%s", oAdmin.userUnrevoke(r.FormValue("username")))
err, msg := oAdmin.userUnrevoke(r.FormValue("username"))
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
} else {
w.WriteHeader(http.StatusOK)
fmt.Fprintf(w, msg)
}
}
func (oAdmin *OvpnAdmin) userChangePasswordHandler(w http.ResponseWriter, r *http.Request) {
log.Info(r.RemoteAddr, " ", r.RequestURI)
_ = r.ParseForm()
if *authByPassword {
passwordChanged, passwordChangeMessage := oAdmin.userChangePassword(r.FormValue("username"), r.FormValue("password"))
if passwordChanged {
w.WriteHeader(http.StatusOK)
fmt.Fprintf(w, `{"status":"ok", "message": "%s"}`, passwordChangeMessage)
return
} else {
err, msg := oAdmin.userChangePassword(r.FormValue("username"), r.FormValue("password"))
if err != nil {
w.WriteHeader(http.StatusInternalServerError)
fmt.Fprintf(w, `{"status":"error", "message": "%s"}`, passwordChangeMessage)
return
fmt.Fprintf(w, `{"status":"error", "message": "%s"}`, msg)
} else {
w.WriteHeader(http.StatusOK)
fmt.Fprintf(w, `{"status":"ok", "message": "%s"}`, msg)
}
} else {
http.Error(w, `{"status":"error"}`, http.StatusNotImplemented)
@ -827,16 +851,20 @@ func checkStaticAddressIsFree(staticAddress string, username string) bool {
return false
}
func validateUsername(username string) bool {
func validateUsername(username string) error {
var validUsername = regexp.MustCompile(usernameRegexp)
return validUsername.MatchString(username)
if validUsername.MatchString(username) {
return nil
} else {
return errors.New(fmt.Sprintf("Username can only contains %s", usernameRegexp))
}
}
func validatePassword(password string) bool {
if len(password) < passwordMinLength {
return false
func validatePassword(password string) error {
if utf8.RuneCountInString(password) < passwordMinLength {
return errors.New(fmt.Sprintf("Password too short, password length must be greater or equal %d", passwordMinLength))
} else {
return true
return nil
}
}
@ -928,17 +956,15 @@ func (oAdmin *OvpnAdmin) userCreate(username, password string) (bool, string) {
return false, ucErr
}
if !validateUsername(username) {
ucErr = fmt.Sprintf("Username \"%s\" incorrect, you can use only %s\n", username, usernameRegexp)
log.Debugf("userCreate: validateUsername(): %s", ucErr)
return false, ucErr
if err := validateUsername(username); err != nil {
log.Debugf("userCreate: validateUsername(): %s", err.Error())
return false, err.Error()
}
if *authByPassword {
if !validatePassword(password) {
ucErr = fmt.Sprintf("Password too short, password length must be greater or equal %d", passwordMinLength)
log.Debugf("userCreate: authByPassword(): %s", ucErr)
return false, ucErr
if err := validatePassword(password); err != nil {
log.Debugf("userCreate: authByPassword(): %s", err.Error())
return false, err.Error()
}
}
@ -964,20 +990,18 @@ func (oAdmin *OvpnAdmin) userCreate(username, password string) (bool, string) {
return true, ucErr
}
func (oAdmin *OvpnAdmin) userChangePassword(username, password string) (bool, string) {
func (oAdmin *OvpnAdmin) userChangePassword(username, password string) (error, string) {
if checkUserExist(username) {
o := runBash(fmt.Sprintf("openvpn-user check --db.path %s --user %s | grep %s | wc -l", *authDatabase, username, username))
log.Debug(o)
if !validatePassword(password) {
ucpErr := fmt.Sprintf("Password for too short, password length must be greater or equal %d", passwordMinLength)
log.Warningf("userChangePassword: %s", ucpErr)
return false, ucpErr
if err := validatePassword(password); err != nil {
log.Warningf("userChangePassword: %s", err.Error())
return err, err.Error()
}
if strings.TrimSpace(o) == "0" {
log.Debug("Creating user in users.db")
o = runBash(fmt.Sprintf("openvpn-user create --db.path %s --user %s --password %s", *authDatabase, username, password))
log.Debug(o)
}
@ -987,10 +1011,10 @@ func (oAdmin *OvpnAdmin) userChangePassword(username, password string) (bool, st
log.Infof("Password for user %s was changed", username)
return true, "Password changed"
return nil, "Password changed"
}
return false, "User does not exist"
return errors.New(fmt.Sprintf("User \"%s\" not found}", username)), fmt.Sprintf("{\"msg\":\"User \"%s\" not found\"}", username)
}
func (oAdmin *OvpnAdmin) getUserStatistic(username string) []clientStatus {
@ -1003,7 +1027,7 @@ func (oAdmin *OvpnAdmin) getUserStatistic(username string) []clientStatus {
return userStatistic
}
func (oAdmin *OvpnAdmin) userRevoke(username string) string {
func (oAdmin *OvpnAdmin) userRevoke(username string) (error, string) {
log.Infof("Revoke certificate for user %s", username)
if checkUserExist(username) {
// check certificate valid flag 'V'
@ -1018,7 +1042,8 @@ func (oAdmin *OvpnAdmin) userRevoke(username string) string {
}
if *authByPassword {
_ = runBash(fmt.Sprintf("openvpn-user revoke --db-path %s --user %s", *authDatabase, username))
o := runBash(fmt.Sprintf("openvpn-user revoke --db-path %s --user %s", *authDatabase, username))
log.Debug(o)
}
crlFix()
@ -1032,13 +1057,13 @@ func (oAdmin *OvpnAdmin) userRevoke(username string) string {
}
oAdmin.setState()
return fmt.Sprintf("user \"%s\" revoked", username)
return nil, fmt.Sprintf("user \"%s\" revoked", username)
}
log.Infof("user \"%s\" not found", username)
return fmt.Sprintf("User \"%s\" not found", username)
return errors.New(fmt.Sprintf("User \"%s\" not found}", username)), fmt.Sprintf("User \"%s\" not found", username)
}
func (oAdmin *OvpnAdmin) userUnrevoke(username string) string {
func (oAdmin *OvpnAdmin) userUnrevoke(username string) (error, string) {
if checkUserExist(username) {
if *storageBackend == "kubernetes.secrets" {
err := app.easyrsaUnrevoke(username)
@ -1055,19 +1080,19 @@ func (oAdmin *OvpnAdmin) userUnrevoke(username string) string {
usersFromIndexTxt[i].Flag = "V"
usersFromIndexTxt[i].RevocationDate = ""
err := fCopy(fmt.Sprintf("%s/pki/revoked/certs_by_serial/%s.crt", *easyrsaDirPath, usersFromIndexTxt[i].SerialNumber), fmt.Sprintf("%s/pki/issued/%s.crt", *easyrsaDirPath, username))
err := fMove(fmt.Sprintf("%s/pki/revoked/certs_by_serial/%s.crt", *easyrsaDirPath, usersFromIndexTxt[i].SerialNumber), fmt.Sprintf("%s/pki/issued/%s.crt", *easyrsaDirPath, username))
if err != nil {
log.Error(err)
}
err = fCopy(fmt.Sprintf("%s/pki/revoked/certs_by_serial/%s.crt", *easyrsaDirPath, usersFromIndexTxt[i].SerialNumber), fmt.Sprintf("%s/pki/certs_by_serial/%s.pem", *easyrsaDirPath, usersFromIndexTxt[i].SerialNumber))
err = fMove(fmt.Sprintf("%s/pki/revoked/certs_by_serial/%s.crt", *easyrsaDirPath, usersFromIndexTxt[i].SerialNumber), fmt.Sprintf("%s/pki/certs_by_serial/%s.pem", *easyrsaDirPath, usersFromIndexTxt[i].SerialNumber))
if err != nil {
log.Error(err)
}
err = fCopy(fmt.Sprintf("%s/pki/revoked/private_by_serial/%s.key", *easyrsaDirPath, usersFromIndexTxt[i].SerialNumber), fmt.Sprintf("%s/pki/private/%s.key", *easyrsaDirPath, username))
err = fMove(fmt.Sprintf("%s/pki/revoked/private_by_serial/%s.key", *easyrsaDirPath, usersFromIndexTxt[i].SerialNumber), fmt.Sprintf("%s/pki/private/%s.key", *easyrsaDirPath, username))
if err != nil {
log.Error(err)
}
err = fCopy(fmt.Sprintf("%s/pki/revoked/reqs_by_serial/%s.req", *easyrsaDirPath, usersFromIndexTxt[i].SerialNumber), fmt.Sprintf("%s/pki/reqs/%s.req", *easyrsaDirPath, username))
err = fMove(fmt.Sprintf("%s/pki/revoked/reqs_by_serial/%s.req", *easyrsaDirPath, usersFromIndexTxt[i].SerialNumber), fmt.Sprintf("%s/pki/reqs/%s.req", *easyrsaDirPath, username))
if err != nil {
log.Error(err)
}
@ -1079,7 +1104,8 @@ func (oAdmin *OvpnAdmin) userUnrevoke(username string) string {
_ = runBash(fmt.Sprintf("cd %s && easyrsa gen-crl 1>/dev/null", *easyrsaDirPath))
if *authByPassword {
_ = runBash(fmt.Sprintf("openvpn-user restore --db-path %s --user %s", *authDatabase, username))
o := runBash(fmt.Sprintf("openvpn-user restore --db-path %s --user %s", *authDatabase, username))
log.Debug(o)
}
crlFix()
@ -1096,12 +1122,12 @@ func (oAdmin *OvpnAdmin) userUnrevoke(username string) string {
}
crlFix()
oAdmin.clients = oAdmin.usersList()
return fmt.Sprintf("{\"msg\":\"User %s successfully unrevoked\"}", username)
return nil, fmt.Sprintf("{\"msg\":\"User %s successfully unrevoked\"}", username)
}
return fmt.Sprintf("{\"msg\":\"User \"%s\" not found\"}", username)
return errors.New(fmt.Sprintf("user \"%s\" not found", username)), fmt.Sprintf("{\"msg\":\"User \"%s\" not found\"}", username)
}
func (oAdmin *OvpnAdmin) userRotate(username, newPassword string) string {
func (oAdmin *OvpnAdmin) userRotate(username, newPassword string) (error, string) {
if checkUserExist(username) {
if *storageBackend == "kubernetes.secrets" {
err := app.easyrsaRotate(username, newPassword)
@ -1110,12 +1136,17 @@ func (oAdmin *OvpnAdmin) userRotate(username, newPassword string) string {
}
} else {
uniqHash := strings.Replace(uuid.New().String(), "-", "", -1)
var oldUserIndex, newUserIndex int
var oldUserSerial string
uniqHash := strings.Replace(uuid.New().String(), "-", "", -1)
usersFromIndexTxt := indexTxtParser(fRead(*indexTxtPath))
for i := range usersFromIndexTxt {
if usersFromIndexTxt[i].DistinguishedName == "/CN="+username {
oldUserSerial = usersFromIndexTxt[i].SerialNumber
usersFromIndexTxt[i].DistinguishedName = "/CN=REVOKED-" + username + "-" + uniqHash
oldUserIndex = i
break
}
}
@ -1124,36 +1155,53 @@ func (oAdmin *OvpnAdmin) userRotate(username, newPassword string) string {
log.Error(err)
}
oAdmin.userCreate(username, newPassword)
if *authByPassword {
o := runBash(fmt.Sprintf("openvpn-user delete --force --db.path %s --user %s", *authDatabase, username))
log.Debug(o)
}
userCreated, userCreateMessage := oAdmin.userCreate(username, newPassword)
if !userCreated {
usersFromIndexTxt = indexTxtParser(fRead(*indexTxtPath))
for i := range usersFromIndexTxt {
if usersFromIndexTxt[i].SerialNumber == oldUserSerial {
usersFromIndexTxt[i].DistinguishedName = "/CN=" + username
break
}
}
err = fWrite(*indexTxtPath, renderIndexTxt(usersFromIndexTxt))
if err != nil {
log.Error(err)
}
return errors.New(fmt.Sprintf("error rotaing user due: %s", userCreateMessage)), userCreateMessage
}
usersFromIndexTxt = indexTxtParser(fRead(*indexTxtPath))
for i := range usersFromIndexTxt {
if usersFromIndexTxt[i].DistinguishedName == "/CN="+username {
newUserIndex = i
}
if usersFromIndexTxt[i].DistinguishedName == "/CN=REVOKED-"+username+"-"+uniqHash {
if usersFromIndexTxt[i].SerialNumber == oldUserSerial {
oldUserIndex = i
}
}
usersFromIndexTxt[oldUserIndex], usersFromIndexTxt[newUserIndex] = usersFromIndexTxt[newUserIndex], usersFromIndexTxt[oldUserIndex]
if *authByPassword {
_ = runBash(fmt.Sprintf("openvpn-user change-password --db.path %s --user %s --password %s", *authDatabase, username, newPassword))
}
err = fWrite(*indexTxtPath, renderIndexTxt(usersFromIndexTxt))
if err != nil {
log.Error(err)
}
_ = runBash(fmt.Sprintf("cd %s && easyrsa gen-crl 1>/dev/null", *easyrsaDirPath))
}
crlFix()
oAdmin.clients = oAdmin.usersList()
return fmt.Sprintf("{\"msg\":\"User %s successfully rotated\"}", username)
return nil, fmt.Sprintf("{\"msg\":\"User %s successfully rotated\"}", username)
}
return fmt.Sprintf("{\"msg\":\"User \"%s\" not found\"}", username)
return errors.New(fmt.Sprintf("user \"%s\" not found", username)), fmt.Sprintf("{\"msg\":\"User \"%s\" not found\"}", username)
}
func (oAdmin *OvpnAdmin) userDelete(username string) string {
func (oAdmin *OvpnAdmin) userDelete(username string) (error, string) {
if checkUserExist(username) {
if *storageBackend == "kubernetes.secrets" {
err := app.easyrsaDelete(username)
@ -1180,9 +1228,9 @@ func (oAdmin *OvpnAdmin) userDelete(username string) string {
}
crlFix()
oAdmin.clients = oAdmin.usersList()
return fmt.Sprintf("{\"msg\":\"User %s successfully deleted\"}", username)
return nil, fmt.Sprintf("{\"msg\":\"User %s successfully deleted\"}", username)
}
return fmt.Sprintf("{\"msg\":\"User \"%s\" not found\"}", username)
return errors.New(fmt.Sprintf("User \"%s\" not found}", username)), fmt.Sprintf("{\"msg\":\"User \"%s\" not found\"}", username)
}
func (oAdmin *OvpnAdmin) mgmtRead(conn net.Conn) string {