411 lines
12 KiB
Go
411 lines
12 KiB
Go
// -------------------------------------------
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// Hashicorp Vault wrap/unwrap web service
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// Distributed under GNU Public License
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// Author: Sergey Kalinin svk@nuk-svk.ru
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// Home page: https://nuk-svk.ru https://git.nuk-svk.ru
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// -------------------------------------------
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package main
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import (
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// "context"
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"log"
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// "time"
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"os"
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"fmt"
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"flag"
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"regexp"
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"bytes"
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"strconv"
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"strings"
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"time"
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"encoding/json"
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"crypto/tls"
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"net/http"
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"html/template"
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"path/filepath"
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"github.com/gorilla/mux"
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"github.com/sethvargo/go-password/password"
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)
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// {
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// "request_id": "540486b5-80b6-4250-1ba3-ec562984c58c",
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// "lease_id": "",
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// "renewable": false,
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// "lease_duration": 0,
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// "data": {
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// "user": "password"
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// },
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// "wrap_info": null,
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// "warnings": null,
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// "auth": null,
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// "mount_type": "system"
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// }
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//
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var (
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Debug bool
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TemplateDir string
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TemplateFile string
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ActionAddress string
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VaultAddress string
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VaultToken string
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Data string
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ListenPort string
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TlsEnable bool
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TlsCertFile string
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TlsKeyFile string
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MaxTextLength int
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TokenTTL string
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)
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type TemplateData struct {
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URL string
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TEXT string
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MAXTEXTLENGTH int
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}
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type UnwrappedData struct {
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Rerquest_id string `json: "request_id"`
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Lease_id string `json: "lease_id"`
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Renewable bool `json: "renewable"`
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Lease_daration int `json:"lease_duration"`
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Data map[string]string `json: "data"`
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Wrap_info *WrapInfo `json: "wrap_info"`
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Warnings string `json: "warnings"`
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Auth string `json: "auth"`
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Mount_type string `json: "mount_type"`
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Errors string `json: "errors"`
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}
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type WrapInfo struct {
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Token string `json:"token"`
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Ttl int `json:"ttl"`
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CreationTime time.Time `json:"creation_time"`
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CreationPath string `json:"creation_path"`
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}
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// const MaxTextLength = 100
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func vaultDataWrap(vaultAddr string, text string) string {
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secret := make(map[string]string)
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secret["wrapped_data"] = text
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postBody, err := json.Marshal(secret)
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if err != nil {
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log.Println("Errored marshaling the text:", text)
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}
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customTransport := &(*http.DefaultTransport.(*http.Transport))
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customTransport.TLSClientConfig = &tls.Config{InsecureSkipVerify: true}
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client := &http.Client{Transport: customTransport}
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// client := &http.Client{}
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req, _ := http.NewRequest("POST", vaultAddr, bytes.NewBuffer(postBody))
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req.Header.Add("Accept", "application/json")
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req.Header.Add("X-Vault-Token", VaultToken)
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req.Header.Add("X-Vault-Wrap-TTL", TokenTTL)
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resp, err := client.Do(req)
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if err != nil {
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log.Println("Errored when sending request to the Vault server")
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}
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var result UnwrappedData
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json.NewDecoder(resp.Body).Decode(&result)
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// wrappedToken := result.Data
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if Debug {
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log.Println(resp)
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log.Println("result", result)
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log.Println("token", result.Wrap_info.Token)
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}
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return result.Wrap_info.Token
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}
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func vaultDataUnWrap(vaultAddr string, vaultWrapToken string) map[string]string {
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log.Printf("Vault address: %s ", vaultAddr)
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customTransport := &(*http.DefaultTransport.(*http.Transport))
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customTransport.TLSClientConfig = &tls.Config{InsecureSkipVerify: true}
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client := &http.Client{Transport: customTransport}
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// client := &http.Client{}
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log.Println(vaultAddr, vaultWrapToken)
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req, _ := http.NewRequest("POST", vaultAddr, nil)
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req.Header.Add("Accept", "application/json")
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req.Header.Add("X-Vault-Token", vaultWrapToken)
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resp, err := client.Do(req)
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if err != nil {
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log.Println("Errored when sending request to the Vault server", err)
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}
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if Debug {
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log.Println(resp)
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}
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var result UnwrappedData
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json.NewDecoder(resp.Body).Decode(&result)
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secret := result.Data
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if Debug {
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log.Println("result", result)
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log.Println("secret", secret)
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}
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// log.Println("Length=", len(secret))
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// if len(secret) == 0 {
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// log.Println("Error:", result.Errors)
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// }
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// fmt.Sprint(secret)
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// for v, k := range secret {
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// log.Println(k, v)
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// }
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return secret
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}
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func ParseTemplate(templateFileName string, data interface{}) (body string, err error) {
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body = ""
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t, err := template.ParseFiles(templateFileName)
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if err != nil {
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log.Println("Ошибка преобразования html шаблона", templateFileName, err)
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return
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}
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buf := new(bytes.Buffer)
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if err = t.Execute(buf, data); err != nil {
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log.Println("Ошибка преобразования html шаблона", templateFileName, err)
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body = ""
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} else {
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body = buf.String()
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}
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return
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}
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func getStaticPage(w http.ResponseWriter, r *http.Request) {
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var (
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templateData TemplateData
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)
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template := filepath.Join(TemplateDir, TemplateFile)
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// templateData.UUID = uuid
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templateData.URL = ActionAddress
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templateData.TEXT = Data
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templateData.MAXTEXTLENGTH = MaxTextLength
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// templateData.URL = FishingUrl + "/" + arrUsers[i].messageUUID
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if body, err := ParseTemplate(template, templateData); err == nil {
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w.Write([]byte(body))
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}
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}
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// hvs.CAES - 95
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// s.Dj7kZS - 26
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func unwrapDataFromHtmlForm(w http.ResponseWriter, r *http.Request) {
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r.ParseForm()
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token := r.FormValue("input_token")
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vaultPath := VaultAddress + "/v1/sys/wrapping/unwrap"
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Data = ""
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// fmt.Fprintln(w, r.URL.RawQuery)
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// log.Println(w, r.URL.RawQuery)
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if Debug {
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log.Printf("Текст для шифровки: %s ", token)
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log.Printf("Адрес сервера Hashicorp Vault: %s ", vaultPath)
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}
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// Проверка текста на соответствие шаблону
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re := regexp.MustCompile(`^(hvs|s)\.[\w\-\_]+`)
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if Debug {
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fmt.Println(re.Match([]byte(token)))
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}
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token = strings.ReplaceAll(token, "\r", "")
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token = strings.ReplaceAll(token, "\n", "")
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token = strings.ReplaceAll(token, " ", "")
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token = strings.TrimSpace(token)
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if token != "" && re.Match([]byte(token)) {
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b := new(bytes.Buffer)
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for key, value := range vaultDataUnWrap(vaultPath, token) {
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fmt.Fprintf(b, "%s: %s\n", key, value)
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}
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Data = b.String()
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if Data == "" {
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Data = "Ошибка! Токен не найден."
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}
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if Debug {
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log.Println(Data)
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}
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} else if token != "" {
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Data = "Введенные данные не соответствуют формату. Введите корректный токен."
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}
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getStaticPage(w, r)
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// http.Redirect(w, r, "http://"+r.Host, http.StatusMovedPermanently)
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}
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func genPassword(w http.ResponseWriter, r *http.Request) {
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// params := mux.Vars(r)
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// passLength := params["passLength"]
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Data = ""
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r.ParseForm()
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passLength := r.FormValue("passlength")
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if Debug {
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log.Printf(r.FormValue("passlength"), passLength)
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}
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if len(passLength) == 0 {
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passLength = "32"
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}
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// w.Write([]byte("Длина пароля " + passLength + "/n"))
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passwordLength, err := strconv.Atoi(passLength)
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if passwordLength > MaxTextLength {
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log.Printf("Oversized password length")
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Data = "Превышена длина пароля"
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getStaticPage(w, r)
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return
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}
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if err != nil {
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log.Println(err)
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}
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res, err := password.Generate(passwordLength, 10, 5, false, true)
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if err != nil {
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log.Println(err)
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}
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if Debug {
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log.Printf(res)
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}
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Data = res
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// w.Write([]byte(res))
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getStaticPage(w, r)
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}
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func genPasswordDefault(w http.ResponseWriter, r *http.Request) {
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res, err := password.Generate(64, 10, 5, false, false)
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if err != nil {
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log.Fatal(err)
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}
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log.Printf(res)
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// w.Write([]byte(res))
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Data = res
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// w.Write([]byte(res))
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getStaticPage(w, r)
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}
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func wrapDataFromHtmlForm(w http.ResponseWriter, r *http.Request) {
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r.ParseForm()
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secret := r.FormValue("input_token")
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if len([]rune(secret)) > MaxTextLength {
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log.Println("Длина текста превышает заданные ограничения:", MaxTextLength)
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Data = fmt.Sprintf("Длина текста превышает заданные ограничения: %s > %s", strconv.Itoa(len([]rune(secret))), strconv.Itoa(MaxTextLength))
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} else {
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vaultPath := VaultAddress + "/v1/sys/wrapping/wrap"
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Data = ""
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if Debug {
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fmt.Println("Введен текст:", secret)
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}
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if secret != "" {
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Data = vaultDataWrap(vaultPath, secret)
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if Data == "" {
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Data = "Ошибка! Токен не найден."
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}
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if Debug {
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log.Println(Data)
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}
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} else if secret != "" {
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Data = "Введите текст для шифровки."
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}
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}
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getStaticPage(w, r)
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}
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func main() {
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var (
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logFile string
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)
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flag.BoolVar(&Debug, "debug", false, "Вывод отладочных сообщений в консоль")
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flag.StringVar(&logFile, "log-file", "vault-unwrap.log", "Путь до лог-файла ")
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flag.StringVar(&TemplateDir, "template-dir", "html-template", "Каталог с шаблонами")
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flag.StringVar(&TemplateFile, "template-file", "index.html", "Файл-шаблон для ВЭБ-странцы")
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flag.StringVar(&VaultAddress, "vault-url", "", "Адрес сервера Hashicorp Vault (https://host.name:8200)")
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flag.StringVar(&ActionAddress, "action-address", "", "Адрес данного сервиса (https://host.name)")
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flag.StringVar(&ListenPort, "listen-port", "8080", "Номер порта сервиса")
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flag.StringVar(&TlsCertFile, "tls-cert", "", "TLS сертификат (файл)")
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flag.StringVar(&TlsKeyFile, "tls-key", "", "TLS ключ (файл)")
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flag.BoolVar(&TlsEnable, "tls", false, "Использовать SSL/TLS")
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flag.IntVar(&MaxTextLength, "max-text-length", 100 , "Максимальная длина текста для шифрования и длина пароля для генератора")
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flag.StringVar(&TokenTTL, "token-ttl", "3600", "Время жизни wrap-токена в секундах")
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flag.Parse()
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if os.Getenv("logFile") != "" {
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logFile = os.Getenv("logFile")
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}
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fLog, err := os.OpenFile(logFile, os.O_RDWR | os.O_CREATE | os.O_APPEND, 0666)
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if err != nil {
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log.Fatalf("error opening file: %v", err)
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}
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defer fLog.Close()
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if Debug {
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log.SetOutput(os.Stdout)
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} else {
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log.SetOutput(fLog)
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}
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if os.Getenv("VAULT_ADDRESS") == "" && VaultAddress == "" {
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log.Println("Send error: make sure environment variables `VAULT_ADDRESS` was set")
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} else if os.Getenv("VAULT_ADDRESS") != "" && VaultAddress == "" {
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VaultAddress = os.Getenv("VAULT_ADDRESS")
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}
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if os.Getenv("VAULT_TOKEN") == "" && VaultToken == "" {
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log.Println("Send error: make sure environment variables `VAULT_TOKEN` was set")
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} else if os.Getenv("VAULT_TOKEN") != "" && VaultToken == "" {
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VaultToken = os.Getenv("VAULT_TOKEN")
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}
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if os.Getenv("MAX_TEXT_LENGTH") != "" && MaxTextLength == 100 {
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MaxTextLength, err = strconv.Atoi(os.Getenv("MAX_TEXT_LENGTH"))
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if err != nil {
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log.Printf("Ошибка преобразования значения ", os.Getenv("MAX_TEXT_LENGTH"))
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}
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}
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if Debug {
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log.Printf("Адрес сервера Hashicorp Vault: %s ", VaultAddress)
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}
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rtr := mux.NewRouter()
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rtr.HandleFunc("/unwrap", unwrapDataFromHtmlForm)
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rtr.HandleFunc("/wrap", wrapDataFromHtmlForm)
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rtr.HandleFunc("/genpassword/{passLength:[0-9]+}", genPassword)
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rtr.HandleFunc("/genpassword", genPassword)
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rtr.HandleFunc("/", unwrapDataFromHtmlForm)
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rtr.PathPrefix("/").Handler(http.FileServer(http.Dir("./static")))
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http.Handle("/", rtr)
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if os.Getenv("LISTEN_PORT") != "" {
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ListenPort = os.Getenv("LISTEN_PORT")
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} else {
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if TlsEnable && ListenPort == ""{
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ListenPort = "8443"
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}
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}
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listenAddr := ":" + ListenPort
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// ActionAddress = "https://" + ActionAddress
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if Debug {
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log.Printf("Адрес сервиса: %s%s ", ActionAddress, listenAddr)
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}
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log.Println("Listening...")
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if TlsEnable {
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log.Fatal(http.ListenAndServeTLS(listenAddr, TlsCertFile, TlsKeyFile, nil))
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} else {
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http.ListenAndServe(listenAddr, nil)
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}
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}
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