fix: hides password echo temporarily

refactor on codes related to input and config is on the way.

go.mod

@@ -5,4 +5,5 @@ go 1.14
 require (
 	github.com/elazarl/goproxy v0.0.0-20200426045556-49ad98f6dac1
 	github.com/elazarl/goproxy/ext v0.0.0-20200426045556-49ad98f6dac1
+	golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9
 )

go.sum

@@ -5,3 +5,11 @@ github.com/elazarl/goproxy/ext v0.0.0-20200426045556-49ad98f6dac1 h1:nCR2gi9ueTf
 github.com/elazarl/goproxy/ext v0.0.0-20200426045556-49ad98f6dac1/go.mod h1:gNh8nYJoAm43RfaxurUnxr+N1PwuFV3ZMl/efxlIlY8=
 github.com/rogpeppe/go-charset v0.0.0-20180617210344-2471d30d28b4 h1:BN/Nyn2nWMoqGRA7G7paDNDqTXE30mXGqzzybrfo05w=
 github.com/rogpeppe/go-charset v0.0.0-20180617210344-2471d30d28b4/go.mod h1:qgYeAmZ5ZIpBWTGllZSQnw97Dj+woV0toclVaRGI8pc=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9 h1:psW17arqaxU48Z5kZ0CQnkZWQJsqcURM6tKiBApRjXI=
+golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
+golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190412213103-97732733099d h1:+R4KGOnez64A81RvjARKc4UT5/tI9ujCIVX+P5KiHuI=
+golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=

main.go

@@ -31,9 +31,11 @@ package main
 
 import (
 	"fmt"
+	"os"
 
 	"github.com/coolspring8/rwppa/internal/proxy"
 	"github.com/coolspring8/rwppa/internal/rvpn"
+	"golang.org/x/crypto/ssh/terminal"
 )
 
 func main() {
@@ -46,10 +48,12 @@ func main() {
 		panic(err)
 	}
 	fmt.Println("Password:")
-	_, err = fmt.Scanln(&password)
+	pw, err := terminal.ReadPassword(int(os.Stdin.Fd()))
 	if err != nil {
 		panic(err)
 	}
+	password = string(pw)
+	fmt.Println("")
 	fmt.Println("Listen Address:")
 	_, err = fmt.Scanln(&listenAddr)
 	if err != nil {