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password/main.go

122 lines
2.8 KiB
Go

package main
import (
"fmt"
"log"
"net/http"
"os"
"strconv"
"github.com/Luzifer/password/lib"
"github.com/codegangsta/cli"
"github.com/gorilla/mux"
)
var pwd *securepassword.SecurePassword
func init() {
pwd = securepassword.NewSecurePassword()
}
func main() {
app := cli.NewApp()
app.Usage = "generates secure random passwords"
app.Version = "1.0.0"
app.Commands = []cli.Command{
{
Name: "serve",
Usage: "start an API server to request passwords",
Action: startAPIServer,
Flags: []cli.Flag{
cli.IntFlag{
Name: "port",
Value: 3000,
Usage: "port to listen on",
},
},
},
{
Name: "get",
Usage: "generate and return a secure random password",
Action: printPassword,
Flags: []cli.Flag{
cli.IntFlag{
Name: "length, l",
Value: 20,
Usage: "length of the generated password",
},
cli.BoolFlag{
Name: "special, s",
Usage: "use special characters in your password",
},
},
},
}
app.Run(os.Args)
}
func startAPIServer(c *cli.Context) {
r := mux.NewRouter()
r.HandleFunc("/", handleFrontend).Methods("GET")
r.PathPrefix("/assets").HandlerFunc(handleAssets).Methods("GET")
r.HandleFunc("/v1/getPassword", handleAPIGetPasswordv1).Methods("GET")
http.Handle("/", r)
http.ListenAndServe(fmt.Sprintf(":%d", c.Int("port")), nil)
}
func printPassword(c *cli.Context) {
password, err := pwd.GeneratePassword(c.Int("length"), c.Bool("special"))
if err != nil {
switch {
case err == securepassword.ErrLengthTooLow:
fmt.Println("The password has to be more than 4 characters long to meet the security considerations")
default:
fmt.Println("An unknown error occured")
}
os.Exit(1)
}
fmt.Println(password)
}
func handleAPIGetPasswordv1(res http.ResponseWriter, r *http.Request) {
length, err := strconv.Atoi(r.URL.Query().Get("length"))
if err != nil {
length = 20
}
special := r.URL.Query().Get("special") == "true"
if length > 128 || length < 4 {
http.Error(res, "Please do not use length with more than 128 or fewer than 4 characters!", http.StatusNotAcceptable)
return
}
password, err := pwd.GeneratePassword(length, special)
res.Header().Add("Content-Type", "text/plain")
res.Header().Add("Cache-Control", "no-cache")
res.Write([]byte(password))
}
func handleFrontend(res http.ResponseWriter, r *http.Request) {
res.Header().Add("Content-Type", "text/html")
buf, err := Asset("frontend/index.html")
if err != nil {
http.Error(res, "Unable to load interface", http.StatusInternalServerError)
log.Println(err)
return
}
res.Write(buf)
}
func handleAssets(res http.ResponseWriter, r *http.Request) {
buf, err := Asset(fmt.Sprintf("frontend%s", r.URL.Path))
if err != nil {
http.Error(res, "Unable to load interface", http.StatusInternalServerError)
return
}
res.Write(buf)
}