Integrate keygen util into ck-server

Makefile

@@ -0,0 +1,21 @@
+default: all
+
+version=$(shell ver=$$(git log -n 1 --pretty=oneline --format=%D | awk -F, '{print $$1}' | awk '{print $$3}'); \
+	if [ "$$ver" = "master" ] ; then \
+	ver="master($$(git log -n 1 --pretty=oneline --format=%h))" ; \
+	fi ; \
+	echo $$ver)
+
+client: 
+	go build -ldflags "-X main.version=${version}" -o ./build/ck-client ./cmd/ck-client 
+
+server: 
+	go build -ldflags "-X main.version=${version}" -o ./build/ck-server ./cmd/ck-server
+
+install:
+	mv build/ck-* /usr/local/bin
+
+all: client server
+
+clean:
+	rm -rf ./build/ck-*

README.md

@@ -14,14 +14,14 @@ Besides, Cloak allows multiple users to use one server **on a single port**. QoS
 ## Setup Instructions for the administrator of the server
 0. [Install and configure shadowsocks-libev on your server](https://github.com/shadowsocks/shadowsocks-libev#installation)
 1. Clone this repo onto your server
-2. Build and run cmd/keygen -k. The base64 string before the comma is the public key, the one after the comma is the private key
+2. Build and run cmd/ck-server -k. The base64 string before the comma is the public key, the one after the comma is the private key
-3. Run cmd/keygen -u. This will be used as the AdminUID
+3. Run cmd/ck-server -u. This will be used as the AdminUID
 4. Put the private key and the AdminUID you obtained previously into config/ckserver.json
 5. Edit the configuration file of shadowsocks-libev (default location is /etc/shadowsocks-libev/config.json). Let `server_port` be `443`, `plugin` be the full path to the ck-server binary and `plugin_opts` be the full path to ckserver.json. If the fields `plugin` and `plugin_opts` were not present originally, add these fields to the config file.
 6. Run ss-server as root (because we are binding to TCP port 443)
 
 ### If you want to add more users
-1. Run cmd/keygen -u to generate a new UID
+1. Run cmd/ck-server -u to generate a new UID
 2. On your client, run `ck-client -a -c <path-to-ckclient.json>` to enter admin mode
 3. Input as prompted, that is your ip:port of the server and your AdminUID. Enter 4 to create a new user.
 4. Enter the UID in your ckclient.json as the prompted UID, enter SessionsCap (maximum amount of concurrent sessions a user can have), UpRate and DownRate (in bytes/s), UpCredit and DownCredit (in bytes) and ExpiryTime (as a unix epoch)

cmd/ck-server/ck-server.go

@@ -204,17 +204,29 @@ func main() {
 		flag.StringVar(&pluginOpts, "c", "server.json", "pluginOpts: path to server.json or options seperated by semicolons")
 		askVersion := flag.Bool("v", false, "Print the version number")
 		printUsage := flag.Bool("h", false, "Print this message")
+
+		genUID := flag.Bool("u", false, "Generate a UID")
+		genKeyPair := flag.Bool("k", false, "Generate a pair of public and private key, output in the format of pubkey,pvkey")
+
 		flag.Parse()
 
 		if *askVersion {
 			fmt.Printf("ck-server %s\n", version)
 			return
 		}
-
 		if *printUsage {
 			flag.Usage()
 			return
 		}
+		if *genUID {
+			fmt.Println(generateUID())
+			return
+		}
+		if *genKeyPair {
+			pub, pv := generateKeyPair()
+			fmt.Printf("%v,%v", pub, pv)
+			return
+		}
 
 		if *localAddr == "" {
 			log.Fatal("Must specify localAddr")

cmd/ck-server/keygen.go

@@ -0,0 +1,23 @@
+package main
+
+import (
+	"crypto/rand"
+	"encoding/base64"
+	ecdh "github.com/cbeuw/go-ecdh"
+)
+
+var b64 = base64.StdEncoding.EncodeToString
+
+func generateUID() string {
+	UID := make([]byte, 32)
+	rand.Read(UID)
+	return b64(UID)
+}
+
+func generateKeyPair() (string, string) {
+	ec := ecdh.NewCurve25519ECDH()
+	staticPv, staticPub, _ := ec.GenerateKey(rand.Reader)
+	marshPub := ec.Marshal(staticPub)
+	marshPv := staticPv.(*[32]byte)[:]
+	return b64(marshPub), b64(marshPv)
+}

cmd/keygen/keygen.go

@@ -1,33 +0,0 @@
-package main
-
-import (
-	"crypto/rand"
-	"encoding/base64"
-	"flag"
-	"fmt"
-	ecdh "github.com/cbeuw/go-ecdh"
-)
-
-var b64 = base64.StdEncoding.EncodeToString
-
-func main() {
-	var isUID *bool
-	var isKeypair *bool
-	isUID = flag.Bool("u", false, "Generate UID")
-	isKeypair = flag.Bool("k", false, "Generate a key pair")
-	flag.Parse()
-
-	if *isUID {
-		UID := make([]byte, 32)
-		rand.Read(UID)
-		fmt.Printf(b64(UID))
-	} else if *isKeypair {
-		ec := ecdh.NewCurve25519ECDH()
-		staticPv, staticPub, _ := ec.GenerateKey(rand.Reader)
-		marshPub := ec.Marshal(staticPub)
-		marshPv := staticPv.(*[32]byte)[:]
-
-		fmt.Printf("%v,%v", b64(marshPub), b64(marshPv))
-
-	}
-}

internal/client/state.go

@@ -57,11 +57,10 @@ func InitState(localHost, localPort, remoteHost, remotePort string, nowFunc func
 
 // semi-colon separated value. This is for Android plugin options
 func ssvToJson(ssv string) (ret []byte) {
-	// FIXME: base64 encoded data has =. How to escape?
 	unescape := func(s string) string {
-		r := strings.Replace(s, "\\\\", "\\", -1)
+		r := strings.Replace(s, `\\`, `\`, -1)
-		r = strings.Replace(r, "\\=", "=", -1)
+		r = strings.Replace(r, `\=`, `=`, -1)
-		r = strings.Replace(r, "\\;", ";", -1)
+		r = strings.Replace(r, `\;`, `;`, -1)
 		return r
 	}
 	lines := strings.Split(unescape(ssv), ";")
@@ -76,9 +75,9 @@ func ssvToJson(ssv string) (ret []byte) {
 		// JSON doesn't like quotation marks around int
 		// Yes this is extremely ugly but it's still better than writing a tokeniser
 		if key == "TicketTimeHint" || key == "NumConn" {
-			ret = append(ret, []byte("\""+key+"\":"+value+",")...)
+			ret = append(ret, []byte(`"`+key+`":`+value+`,`)...)
 		} else {
-			ret = append(ret, []byte("\""+key+"\":\""+value+"\",")...)
+			ret = append(ret, []byte(`"`+key+`":"`+value+`",`)...)
 		}
 	}
 	ret = ret[:len(ret)-1] // remove the last comma

internal/server/state.go

@@ -60,9 +60,9 @@ func InitState(localHost, localPort, remoteHost, remotePort string, nowFunc func
 // semi-colon separated value.
 func ssvToJson(ssv string) (ret []byte) {
 	unescape := func(s string) string {
-		r := strings.Replace(s, "\\\\", "\\", -1)
+		r := strings.Replace(s, `\\`, `\`, -1)
-		r = strings.Replace(r, "\\=", "=", -1)
+		r = strings.Replace(r, `\=`, `=`, -1)
-		r = strings.Replace(r, "\\;", ";", -1)
+		r = strings.Replace(r, `\;`, `;`, -1)
 		return r
 	}
 	lines := strings.Split(unescape(ssv), ";")
@@ -74,7 +74,7 @@ func ssvToJson(ssv string) (ret []byte) {
 		sp := strings.SplitN(ln, "=", 2)
 		key := sp[0]
 		value := sp[1]
-		ret = append(ret, []byte("\""+key+"\":\""+value+"\",")...)
+		ret = append(ret, []byte(`"`+key+`":"`+value+`",`)...)
 
 	}
 	ret = ret[:len(ret)-1] // remove the last comma