ovpn-admin/main.go

1144 lines
37 KiB
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package main
import (
"bufio"
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"bytes"
"encoding/json"
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"fmt"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promhttp"
"gopkg.in/alecthomas/kingpin.v2"
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"log"
"net"
"net/http"
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"os"
"regexp"
"strconv"
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"strings"
"text/template"
"time"
"github.com/gobuffalo/packr/v2"
)
const (
usernameRegexp = `^([a-zA-Z0-9_.-@])+$`
passwordRegexp = `^([a-zA-Z0-9_.-@])+$`
passwordMinLength = 6
downloadCertsApiUrl = "/api/data/certs/download"
downloadCcdApiUrl = "/api/data/ccd/download"
certsArchiveFileName = "certs.tar.gz"
ccdArchiveFileName = "ccd.tar.gz"
indexTxtDateLayout = "060102150405Z"
stringDateFormat = "2006-01-02 15:04:05"
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ovpnStatusDateLayout = "2006-01-02 15:04:05"
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version = "1.6.1"
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)
var (
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listenHost = kingpin.Flag("listen.host","host for openvpn-admin").Default("0.0.0.0").String()
listenPort = kingpin.Flag("listen.port","port for openvpn-admin").Default("8080").String()
serverRole = kingpin.Flag("role","server role master or slave").Default("master").HintOptions("master", "slave").String()
masterHost = kingpin.Flag("master.host","url for master server").Default("http://127.0.0.1").String()
masterBasicAuthUser = kingpin.Flag("master.basic-auth.user","user for basic auth on master server url").Default("").String()
masterBasicAuthPassword = kingpin.Flag("master.basic-auth.password","password for basic auth on master server url").Default("").String()
masterSyncFrequency = kingpin.Flag("master.sync-frequency", "master host data sync frequency in seconds.").Default("600").Int()
masterSyncToken = kingpin.Flag("master.sync-token", "master host data sync security token").Default("VerySecureToken").PlaceHolder("TOKEN").String()
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openvpnNetwork = kingpin.Flag("ovpn.network","network for openvpn server").Default("172.16.100.0/24").String()
openvpnServer = kingpin.Flag("ovpn.server","comma separated addresses for openvpn servers").Default("127.0.0.1:7777:tcp").PlaceHolder("HOST:PORT:PROTOCOL").Strings()
mgmtAddress = kingpin.Flag("mgmt","comma separated (alias=address) for openvpn servers mgmt interfaces").Default("main=127.0.0.1:8989").Strings()
metricsPath = kingpin.Flag("metrics.path", "URL path for surfacing collected metrics").Default("/metrics").String()
easyrsaDirPath = kingpin.Flag("easyrsa.path", "path to easyrsa dir").Default("./easyrsa/").String()
indexTxtPath = kingpin.Flag("easyrsa.index-path", "path to easyrsa index file.").Default("./easyrsa/pki/index.txt").String()
ccdEnabled = kingpin.Flag("ccd", "Enable client-config-dir.").Default("false").Bool()
ccdDir = kingpin.Flag("ccd.path", "path to client-config-dir").Default("./ccd").String()
authByPassword = kingpin.Flag("auth.password", "Enable additional password authorization.").Default("false").Bool()
authDatabase = kingpin.Flag("auth.db", "Database path fort password authorization.").Default("./easyrsa/pki/users.db").String()
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debug = kingpin.Flag("debug", "Enable debug mode.").Default("false").Bool()
verbose = kingpin.Flag("verbose", "Enable verbose mode.").Default("false").Bool()
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certsArchivePath = "/tmp/" + certsArchiveFileName
ccdArchivePath = "/tmp/" + ccdArchiveFileName
)
var (
ovpnServerCertExpire = prometheus.NewGauge(prometheus.GaugeOpts{
Name: "ovpn_server_cert_expire",
Help: "openvpn server certificate expire time in days",
},
)
ovpnServerCaCertExpire = prometheus.NewGauge(prometheus.GaugeOpts{
Name: "ovpn_server_ca_cert_expire",
Help: "openvpn server CA certificate expire time in days",
},
)
ovpnClientsTotal = prometheus.NewGauge(prometheus.GaugeOpts{
Name: "ovpn_clients_total",
Help: "total openvpn users",
},
)
ovpnClientsRevoked = prometheus.NewGauge(prometheus.GaugeOpts{
Name: "ovpn_clients_revoked",
Help: "revoked openvpn users",
},
)
ovpnClientsExpired = prometheus.NewGauge(prometheus.GaugeOpts{
Name: "ovpn_clients_expired",
Help: "expired openvpn users",
},
)
ovpnClientsConnected = prometheus.NewGauge(prometheus.GaugeOpts{
Name: "ovpn_clients_connected",
Help: "connected openvpn users",
},
)
ovpnClientCertificateExpire = prometheus.NewGaugeVec(prometheus.GaugeOpts{
Name: "ovpn_client_cert_expire",
Help: "openvpn user certificate expire time in days",
},
[]string{"client"},
)
ovpnClientConnectionInfo = prometheus.NewGaugeVec(prometheus.GaugeOpts{
Name: "ovpn_client_connection_info",
Help: "openvpn user connection info. ip - assigned address from ovpn network. value - last time when connection was refreshed in unix format",
},
[]string{"client", "ip"},
)
ovpnClientConnectionFrom = prometheus.NewGaugeVec(prometheus.GaugeOpts{
Name: "ovpn_client_connection_from",
Help: "openvpn user connection info. ip - from which address connection was initialized. value - time when connection was initialized in unix format",
},
[]string{"client", "ip"},
)
ovpnClientBytesReceived = prometheus.NewGaugeVec(prometheus.GaugeOpts{
Name: "ovpn_client_bytes_received",
Help: "openvpn user bytes received",
},
[]string{"client"},
)
ovpnClientBytesSent = prometheus.NewGaugeVec(prometheus.GaugeOpts{
Name: "ovpn_client_bytes_sent",
Help: "openvpn user bytes sent",
},
[]string{"client"},
)
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)
type OpenvpnAdmin struct {
role string
lastSyncTime string
lastSuccessfulSyncTime string
masterHostBasicAuth bool
masterSyncToken string
clients []OpenvpnClient
activeClients []clientStatus
promRegistry *prometheus.Registry
mgmtInterfaces map[string]string
templates *packr.Box
modules []string
}
type OpenvpnServer struct {
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Host string
Port string
Protocol string
}
type openvpnClientConfig struct {
Hosts []OpenvpnServer
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CA string
Cert string
Key string
TLS string
PasswdAuth bool
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}
type OpenvpnClient struct {
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Identity string `json:"Identity"`
AccountStatus string `json:"AccountStatus"`
ExpirationDate string `json:"ExpirationDate"`
RevocationDate string `json:"RevocationDate"`
ConnectionStatus string `json:"ConnectionStatus"`
ConnectionServer string `json:"ConnectionServer"`
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}
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type ccdRoute struct {
Address string `json:"Address"`
Mask string `json:"Mask"`
Description string `json:"Description"`
}
type Ccd struct {
User string `json:"User"`
ClientAddress string `json:"ClientAddress"`
CustomRoutes []ccdRoute `json:"CustomRoutes"`
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}
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type indexTxtLine struct {
Flag string
ExpirationDate string
RevocationDate string
SerialNumber string
Filename string
DistinguishedName string
Identity string
}
type clientStatus struct {
CommonName string
RealAddress string
BytesReceived string
BytesSent string
ConnectedSince string
VirtualAddress string
LastRef string
ConnectedSinceFormatted string
LastRefFormatted string
ConnectedTo string
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}
func (oAdmin *OpenvpnAdmin) userListHandler(w http.ResponseWriter, r *http.Request) {
usersList, _ := json.Marshal(oAdmin.clients)
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fmt.Fprintf(w, "%s", usersList)
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}
func (oAdmin *OpenvpnAdmin) userStatisticHandler(w http.ResponseWriter, r *http.Request) {
r.ParseForm()
userStatistic, _ := json.Marshal(oAdmin.getUserStatistic(r.FormValue("username")))
fmt.Fprintf(w, "%s", userStatistic)
}
func (oAdmin *OpenvpnAdmin) userCreateHandler(w http.ResponseWriter, r *http.Request) {
if oAdmin.role == "slave" {
http.Error(w, `{"status":"error"}`, http.StatusLocked)
return
}
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r.ParseForm()
userCreated, userCreateStatus := oAdmin.userCreate(r.FormValue("username"), r.FormValue("password"))
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if userCreated {
w.WriteHeader(http.StatusOK)
fmt.Fprintf(w, userCreateStatus)
return
} else {
http.Error(w, userCreateStatus, http.StatusUnprocessableEntity)
}
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}
func (oAdmin *OpenvpnAdmin) userRevokeHandler(w http.ResponseWriter, r *http.Request) {
if oAdmin.role == "slave" {
http.Error(w, `{"status":"error"}`, http.StatusLocked)
return
}
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r.ParseForm()
fmt.Fprintf(w, "%s", oAdmin.userRevoke(r.FormValue("username")))
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}
func (oAdmin *OpenvpnAdmin) userUnrevokeHandler(w http.ResponseWriter, r *http.Request) {
if oAdmin.role == "slave" {
http.Error(w, `{"status":"error"}`, http.StatusLocked)
return
}
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r.ParseForm()
fmt.Fprintf(w, "%s", oAdmin.userUnrevoke(r.FormValue("username")))
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}
func (oAdmin *OpenvpnAdmin) userChangePasswordHandler(w http.ResponseWriter, r *http.Request) {
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 {
w.WriteHeader(http.StatusInternalServerError)
fmt.Fprintf(w, `{"status":"error", "message": "%s"}`, passwordChangeMessage)
return
}
} else {
http.Error(w, `{"status":"error"}`, http.StatusNotImplemented )
}
}
func (oAdmin *OpenvpnAdmin) userShowConfigHandler(w http.ResponseWriter, r *http.Request) {
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r.ParseForm()
fmt.Fprintf(w, "%s", oAdmin.renderClientConfig(r.FormValue("username")))
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}
func (oAdmin *OpenvpnAdmin) userDisconnectHandler(w http.ResponseWriter, r *http.Request) {
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r.ParseForm()
// fmt.Fprintf(w, "%s", userDisconnect(r.FormValue("username")))
fmt.Fprintf(w, "%s", r.FormValue("username"))
}
func (oAdmin *OpenvpnAdmin) userShowCcdHandler(w http.ResponseWriter, r *http.Request) {
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r.ParseForm()
ccd, _ := json.Marshal(oAdmin.getCcd(r.FormValue("username")))
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fmt.Fprintf(w, "%s", ccd)
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}
func (oAdmin *OpenvpnAdmin) userApplyCcdHandler(w http.ResponseWriter, r *http.Request) {
if oAdmin.role == "slave" {
http.Error(w, `{"status":"error"}`, http.StatusLocked)
return
}
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var ccd Ccd
if r.Body == nil {
http.Error(w, "Please send a request body", http.StatusBadRequest)
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return
}
err := json.NewDecoder(r.Body).Decode(&ccd)
if err != nil {
log.Println(err)
}
ccdApplied, applyStatus := oAdmin.modifyCcd(ccd)
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if ccdApplied {
w.WriteHeader(http.StatusOK)
fmt.Fprintf(w, applyStatus)
return
} else {
http.Error(w, applyStatus, http.StatusUnprocessableEntity)
}
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}
func (oAdmin *OpenvpnAdmin) serverSettingsHandler(w http.ResponseWriter, r *http.Request) {
enabledModules, enabledModulesErr := json.Marshal(oAdmin.modules)
if enabledModulesErr != nil {
log.Printf("ERROR: %s\n",enabledModulesErr)
}
fmt.Fprintf(w, `{"status":"ok", "serverRole": "%s", "modules": %s }`, oAdmin.role, string(enabledModules))
}
func (oAdmin *OpenvpnAdmin) lastSyncTimeHandler(w http.ResponseWriter, r *http.Request) {
fmt.Fprint(w, oAdmin.lastSyncTime)
}
func (oAdmin *OpenvpnAdmin) lastSuccessfulSyncTimeHandler(w http.ResponseWriter, r *http.Request) {
fmt.Fprint(w, oAdmin.lastSuccessfulSyncTime)
}
func (oAdmin *OpenvpnAdmin) downloadCertsHandler(w http.ResponseWriter, r *http.Request) {
if oAdmin.role == "slave" {
http.Error(w, `{"status":"error"}`, http.StatusLocked)
return
}
r.ParseForm()
token := r.Form.Get("token")
if token != oAdmin.masterSyncToken {
http.Error(w, `{"status":"error"}`, http.StatusForbidden)
return
}
archiveCerts()
w.Header().Set("Content-Disposition", "attachment; filename=" + certsArchiveFileName)
http.ServeFile(w,r, certsArchivePath)
}
func (oAdmin *OpenvpnAdmin) downloadCcdHandler(w http.ResponseWriter, r *http.Request) {
if oAdmin.role == "slave" {
http.Error(w, `{"status":"error"}`, http.StatusLocked)
return
}
r.ParseForm()
token := r.Form.Get("token")
if token != oAdmin.masterSyncToken {
http.Error(w, `{"status":"error"}`, http.StatusForbidden)
return
}
archiveCcd()
w.Header().Set("Content-Disposition", "attachment; filename=" + ccdArchiveFileName)
http.ServeFile(w,r, ccdArchivePath)
}
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func main() {
kingpin.Version(version)
kingpin.Parse()
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ovpnAdmin := new(OpenvpnAdmin)
ovpnAdmin.lastSyncTime = "unknown"
ovpnAdmin.role = *serverRole
ovpnAdmin.lastSuccessfulSyncTime = "unknown"
ovpnAdmin.masterSyncToken = *masterSyncToken
ovpnAdmin.promRegistry = prometheus.NewRegistry()
ovpnAdmin.modules = []string{}
ovpnAdmin.mgmtInterfaces = make(map[string]string)
for _, mgmtInterface := range *mgmtAddress {
parts := strings.SplitN(mgmtInterface, "=",2)
ovpnAdmin.mgmtInterfaces[parts[0]] = parts[len(parts)-1]
}
ovpnAdmin.registerMetrics()
ovpnAdmin.setState()
go ovpnAdmin.updateState()
if *masterBasicAuthPassword != "" && *masterBasicAuthUser != "" {
ovpnAdmin.masterHostBasicAuth = true
} else {
ovpnAdmin.masterHostBasicAuth = false
}
ovpnAdmin.modules = append(ovpnAdmin.modules, "core")
if *authByPassword {
ovpnAdmin.modules = append(ovpnAdmin.modules, "passwdAuth")
}
if *ccdEnabled {
ovpnAdmin.modules = append(ovpnAdmin.modules, "ccd")
}
if ovpnAdmin.role == "slave" {
ovpnAdmin.syncDataFromMaster()
go ovpnAdmin.syncWithMaster()
}
ovpnAdmin.templates = packr.New("template", "./templates")
staticBox := packr.New("static", "./frontend/static")
static := CacheControlWrapper(http.FileServer(staticBox))
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http.Handle("/", static)
http.HandleFunc("/api/server/settings", ovpnAdmin.serverSettingsHandler)
http.HandleFunc("/api/users/list", ovpnAdmin.userListHandler)
http.HandleFunc("/api/user/create", ovpnAdmin.userCreateHandler)
http.HandleFunc("/api/user/change-password", ovpnAdmin.userChangePasswordHandler)
http.HandleFunc("/api/user/revoke", ovpnAdmin.userRevokeHandler)
http.HandleFunc("/api/user/unrevoke", ovpnAdmin.userUnrevokeHandler)
http.HandleFunc("/api/user/config/show", ovpnAdmin.userShowConfigHandler)
http.HandleFunc("/api/user/disconnect", ovpnAdmin.userDisconnectHandler)
http.HandleFunc("/api/user/statistic", ovpnAdmin.userStatisticHandler)
http.HandleFunc("/api/user/ccd", ovpnAdmin.userShowCcdHandler)
http.HandleFunc("/api/user/ccd/apply", ovpnAdmin.userApplyCcdHandler)
http.HandleFunc("/api/sync/last/try", ovpnAdmin.lastSyncTimeHandler)
http.HandleFunc("/api/sync/last/successful", ovpnAdmin.lastSuccessfulSyncTimeHandler)
http.HandleFunc(downloadCertsApiUrl, ovpnAdmin.downloadCertsHandler)
http.HandleFunc(downloadCcdApiUrl, ovpnAdmin.downloadCcdHandler)
http.Handle(*metricsPath, promhttp.HandlerFor(ovpnAdmin.promRegistry, promhttp.HandlerOpts{}))
http.HandleFunc("/ping", func(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "pong")
})
fmt.Println("Bind: http://" + *listenHost + ":" + *listenPort)
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log.Fatal(http.ListenAndServe(*listenHost + ":" + *listenPort, nil))
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}
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func CacheControlWrapper(h http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Cache-Control", "max-age=2592000") // 30 days
h.ServeHTTP(w, r)
})
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}
func (oAdmin *OpenvpnAdmin) registerMetrics() {
oAdmin.promRegistry.MustRegister(ovpnServerCertExpire)
oAdmin.promRegistry.MustRegister(ovpnServerCaCertExpire)
oAdmin.promRegistry.MustRegister(ovpnClientsTotal)
oAdmin.promRegistry.MustRegister(ovpnClientsRevoked)
oAdmin.promRegistry.MustRegister(ovpnClientsConnected)
oAdmin.promRegistry.MustRegister(ovpnClientsExpired)
oAdmin.promRegistry.MustRegister(ovpnClientCertificateExpire)
oAdmin.promRegistry.MustRegister(ovpnClientConnectionInfo)
oAdmin.promRegistry.MustRegister(ovpnClientConnectionFrom)
oAdmin.promRegistry.MustRegister(ovpnClientBytesReceived)
oAdmin.promRegistry.MustRegister(ovpnClientBytesSent)
}
func (oAdmin *OpenvpnAdmin) setState() {
oAdmin.activeClients = oAdmin.mgmtGetActiveClients()
oAdmin.clients = oAdmin.usersList()
ovpnServerCaCertExpire.Set(float64((getOvpnCaCertExpireDate().Unix() - time.Now().Unix()) / 3600 / 24))
}
func (oAdmin *OpenvpnAdmin) updateState() {
for {
time.Sleep(time.Duration(28) * time.Second)
ovpnClientBytesSent.Reset()
ovpnClientBytesReceived.Reset()
ovpnClientConnectionFrom.Reset()
ovpnClientConnectionInfo.Reset()
go oAdmin.setState()
}
}
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func indexTxtParser(txt string) []indexTxtLine {
var indexTxt []indexTxtLine
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txtLinesArray := strings.Split(txt, "\n")
for _, v := range txtLinesArray {
str := strings.Fields(v)
if len(str) > 0 {
switch {
// case strings.HasPrefix(str[0], "E"):
case strings.HasPrefix(str[0], "V"):
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indexTxt = append(indexTxt, indexTxtLine{Flag: str[0], ExpirationDate: str[1], SerialNumber: str[2], Filename: str[3], DistinguishedName: str[4], Identity: str[4][strings.Index(str[4], "=")+1:]})
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case strings.HasPrefix(str[0], "R"):
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indexTxt = append(indexTxt, indexTxtLine{Flag: str[0], ExpirationDate: str[1], RevocationDate: str[2], SerialNumber: str[3], Filename: str[4], DistinguishedName: str[5], Identity: str[5][strings.Index(str[5], "=")+1:]})
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}
}
}
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return indexTxt
}
func renderIndexTxt(data []indexTxtLine) string {
indexTxt := ""
for _, line := range data {
switch {
case line.Flag == "V":
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indexTxt += fmt.Sprintf("%s\t%s\t\t%s\t%s\t%s\n", line.Flag, line.ExpirationDate, line.SerialNumber, line.Filename, line.DistinguishedName)
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case line.Flag == "R":
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indexTxt += fmt.Sprintf("%s\t%s\t%s\t%s\t%s\t%s\n", line.Flag, line.ExpirationDate, line.RevocationDate, line.SerialNumber, line.Filename, line.DistinguishedName)
// case line.flag == "E":
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}
}
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return indexTxt
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}
func (oAdmin *OpenvpnAdmin) renderClientConfig(username string) string {
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if checkUserExist(username) {
var hosts []OpenvpnServer
for _, server := range *openvpnServer {
parts := strings.SplitN(server, ":",3)
hosts = append(hosts, OpenvpnServer{Host: parts[0], Port: parts[1], Protocol: parts[2]})
}
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if *debug {
log.Printf("WARNING: hosts for %s\n %v", username, hosts )
}
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conf := openvpnClientConfig{}
conf.Hosts = hosts
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conf.CA = fRead(*easyrsaDirPath + "/pki/ca.crt")
conf.Cert = fRead(*easyrsaDirPath + "/pki/issued/" + username + ".crt")
conf.Key = fRead(*easyrsaDirPath + "/pki/private/" + username + ".key")
conf.TLS = fRead(*easyrsaDirPath + "/pki/ta.key")
conf.PasswdAuth = *authByPassword
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clientConfigTpl, clientConfigTplErr := oAdmin.templates.FindString("client.conf.tpl")
if clientConfigTplErr != nil {
log.Println("ERROR: clientConfigTpl not found in templates box")
}
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t := template.Must(template.New("client-config").Parse(clientConfigTpl))
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var tmp bytes.Buffer
err := t.Execute(&tmp, conf)
if err != nil {
log.Printf("WARNING: something goes wrong during rendering config for %s", username )
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if *debug {
log.Printf("ERROR: rendering config for %s failed \n %v", username, err )
}
}
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hosts = nil
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fmt.Printf("%+v\n", tmp.String())
return fmt.Sprintf("%+v\n", tmp.String())
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}
fmt.Printf("User \"%s\" not found", username)
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return fmt.Sprintf("User \"%s\" not found", username)
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}
func (oAdmin *OpenvpnAdmin) parseCcd(username string) Ccd {
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ccd := Ccd{}
ccd.User = username
ccd.ClientAddress = "dynamic"
ccd.CustomRoutes = []ccdRoute{}
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txtLinesArray := strings.Split(fRead(*ccdDir + "/" + username), "\n")
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for _, v := range txtLinesArray {
str := strings.Fields(v)
if len(str) > 0 {
switch {
case strings.HasPrefix(str[0], "ifconfig-push"):
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ccd.ClientAddress = str[1]
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case strings.HasPrefix(str[0], "push"):
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ccd.CustomRoutes = append(ccd.CustomRoutes, ccdRoute{Address: strings.Trim(str[2], "\""), Mask: strings.Trim(str[3], "\""), Description: strings.Trim(strings.Join(str[4:], ""), "#")})
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}
}
}
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return ccd
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}
func (oAdmin *OpenvpnAdmin) modifyCcd(ccd Ccd) (bool, string) {
ccdErr := "something goes wrong"
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if fCreate(*ccdDir + "/" + ccd.User) {
ccdValid, ccdErr := validateCcd(ccd)
if ccdErr != "" {
return false, ccdErr
}
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if ccdValid {
ccdTpl, ccdTplErr := oAdmin.templates.FindString("ccd.tpl")
if ccdTplErr != nil {
ccdErr = "ccdTpl not found in templates box"
log.Printf("ERROR: %s\n",ccdErr)
return false, ccdErr
}
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t := template.Must(template.New("ccd").Parse(ccdTpl))
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var tmp bytes.Buffer
tplErr := t.Execute(&tmp, ccd)
if tplErr != nil {
log.Println(tplErr)
}
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fWrite(*ccdDir + "/" + ccd.User, tmp.String())
return true, "ccd updated successfully"
}
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}
return false, ccdErr
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}
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func validateCcd(ccd Ccd) (bool, string) {
ccdErr := ""
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if ccd.ClientAddress != "dynamic" {
_, ovpnNet, err := net.ParseCIDR(*openvpnNetwork)
if err != nil {
log.Println(err)
}
if ! checkStaticAddressIsFree(ccd.ClientAddress, ccd.User) {
ccdErr = fmt.Sprintf("ClientAddress \"%s\" already assigned to another user", ccd.ClientAddress)
if *debug {
log.Printf("ERROR: Modify ccd for user %s: %s", ccd.User, ccdErr)
}
return false, ccdErr
}
if net.ParseIP(ccd.ClientAddress) == nil {
ccdErr = fmt.Sprintf("ClientAddress \"%s\" not a valid IP address", ccd.ClientAddress)
if *debug {
log.Printf("ERROR: Modify ccd for user %s: %s", ccd.User, ccdErr)
}
return false, ccdErr
}
if ! ovpnNet.Contains(net.ParseIP(ccd.ClientAddress)) {
ccdErr = fmt.Sprintf("ClientAddress \"%s\" not belongs to openvpn server network", ccd.ClientAddress)
if *debug {
log.Printf("ERROR: Modify ccd for user %s: %s", ccd.User, ccdErr)
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}
return false, ccdErr
}
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}
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for _, route := range ccd.CustomRoutes {
if net.ParseIP(route.Address) == nil {
ccdErr = fmt.Sprintf("CustomRoute.Address \"%s\" must be a valid IP address", route.Address)
if *debug {
log.Printf("ERROR: Modify ccd for user %s: %s", ccd.User, ccdErr)
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}
return false, ccdErr
}
if net.ParseIP(route.Mask) == nil {
ccdErr = fmt.Sprintf("CustomRoute.Mask \"%s\" must be a valid IP address", route.Mask)
if *debug {
log.Printf("ERROR: Modify ccd for user %s: %s", ccd.User, ccdErr)
}
return false, ccdErr
}
}
return true, ccdErr
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}
func (oAdmin *OpenvpnAdmin) getCcd(username string) Ccd {
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ccd := Ccd{}
ccd.User = username
ccd.ClientAddress = "dynamic"
ccd.CustomRoutes = []ccdRoute{}
if fCreate(*ccdDir + "/" + username) {
ccd = oAdmin.parseCcd(username)
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}
return ccd
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}
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func checkStaticAddressIsFree(staticAddress string, username string) bool {
o := runBash(fmt.Sprintf("grep -rl %s %s | grep -vx %s/%s | wc -l", staticAddress, *ccdDir, *ccdDir, username))
if strings.TrimSpace(o) == "0" {
return true
}
return false
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}
func validateUsername(username string) bool {
var validUsername = regexp.MustCompile(usernameRegexp)
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return validUsername.MatchString(username)
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}
func validatePassword(password string) bool {
if len(password) < passwordMinLength {
return false
} else {
return true
}
}
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func checkUserExist(username string) bool {
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for _, u := range indexTxtParser(fRead(*indexTxtPath)) {
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if u.DistinguishedName == ("/CN=" + username) {
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return true
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}
}
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return false
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}
func (oAdmin *OpenvpnAdmin) usersList() []OpenvpnClient {
var users []OpenvpnClient
totalCerts := 0
validCerts := 0
revokedCerts := 0
expiredCerts := 0
connectedUsers := 0
apochNow := time.Now().Unix()
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for _, line := range indexTxtParser(fRead(*indexTxtPath)) {
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if line.Identity != "server" {
totalCerts += 1
ovpnClient := OpenvpnClient{Identity: line.Identity, ExpirationDate: parseDateToString(indexTxtDateLayout, line.ExpirationDate, stringDateFormat)}
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switch {
case line.Flag == "V":
ovpnClient.AccountStatus = "Active"
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ovpnClientCertificateExpire.WithLabelValues(line.Identity).Set(float64((parseDateToUnix(indexTxtDateLayout, line.ExpirationDate) - apochNow) / 3600 / 24))
validCerts += 1
case line.Flag == "R":
ovpnClient.AccountStatus = "Revoked"
ovpnClient.RevocationDate = parseDateToString(indexTxtDateLayout, line.RevocationDate, stringDateFormat)
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ovpnClientCertificateExpire.WithLabelValues(line.Identity).Set(float64((parseDateToUnix(indexTxtDateLayout, line.ExpirationDate) - apochNow) / 3600 / 24))
revokedCerts += 1
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case line.Flag == "E":
ovpnClient.AccountStatus = "Expired"
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ovpnClientCertificateExpire.WithLabelValues(line.Identity).Set(float64((parseDateToUnix(indexTxtDateLayout, line.ExpirationDate) - apochNow) / 3600 / 24))
expiredCerts += 1
}
ovpnClient.ConnectionServer = ""
userConnected, userConnectedTo := isUserConnected(line.Identity, oAdmin.activeClients)
if userConnected {
ovpnClient.ConnectionStatus = "Connected"
ovpnClient.ConnectionServer = userConnectedTo
connectedUsers += 1
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}
users = append(users, ovpnClient)
} else {
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ovpnServerCertExpire.Set(float64((parseDateToUnix(indexTxtDateLayout, line.ExpirationDate) - apochNow) / 3600 / 24))
}
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}
otherCerts := totalCerts - validCerts - revokedCerts - expiredCerts
if otherCerts != 0 {
log.Printf("WARNING: there are %d otherCerts", otherCerts)
}
ovpnClientsTotal.Set(float64(totalCerts))
ovpnClientsRevoked.Set(float64(revokedCerts))
ovpnClientsExpired.Set(float64(expiredCerts))
ovpnClientsConnected.Set(float64(connectedUsers))
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