Use glog

dnscrypt-proxy/certs.go

@@ -4,10 +4,10 @@ import (
 	"bytes"
 	"encoding/binary"
 	"errors"
-	"log"
 	"strings"
 	"time"
 
+	"github.com/golang/glog"
 	"github.com/jedisct1/xsecretbox"
 	"github.com/miekg/dns"
 	"golang.org/x/crypto/ed25519"
@@ -41,15 +41,15 @@ func FetchCurrentCert(proxy *Proxy, proto string, pk ed25519.PublicKey, serverAd
 	for _, answerRr := range in.Answer {
 		binCert, err := packTxtString(strings.Join(answerRr.(*dns.TXT).Txt, ""))
 		if err != nil {
-			log.Printf("[%v] Unable to unpack the certificate\n", providerName)
+			glog.Warningf("[%v] Unable to unpack the certificate", providerName)
 			continue
 		}
 		if len(binCert) < 124 {
-			log.Printf("[%v] Certificate too short\n", providerName)
+			glog.Warningf("[%v] Certificate too short", providerName)
 			continue
 		}
 		if !bytes.Equal(binCert[:4], CertMagic[:4]) {
-			log.Printf("[%v] Invalid cert magic\n", providerName)
+			glog.Warningf("[%v] Invalid cert magic", providerName)
 			continue
 		}
 		cryptoConstruction := CryptoConstruction(0)
@@ -59,36 +59,36 @@ func FetchCurrentCert(proxy *Proxy, proto string, pk ed25519.PublicKey, serverAd
 		case 0x0002:
 			cryptoConstruction = XChacha20Poly1305
 		default:
-			log.Printf("[%v] Unsupported crypto construction\n", providerName)
+			glog.Infof("[%v] Unsupported crypto construction", providerName)
 			continue
 		}
 		signature := binCert[8:72]
 		signed := binCert[72:]
 		if !ed25519.Verify(pk, signed, signature) {
-			log.Printf("[%v] Incorrect signature\n", providerName)
+			glog.Warningf("[%v] Incorrect signature", providerName)
 			continue
 		}
 		serial := binary.BigEndian.Uint32(binCert[112:116])
 		tsBegin := binary.BigEndian.Uint32(binCert[116:120])
 		tsEnd := binary.BigEndian.Uint32(binCert[120:124])
 		if now > tsEnd || now < tsBegin {
-			log.Printf("[%v] Certificate not valid at the current date\n", providerName)
+			glog.Infof("[%v] Certificate not valid at the current date", providerName)
 			continue
 		}
 		if serial < highestSerial {
-			log.Printf("[%v] Superseded by a previous certificate\n", providerName)
+			glog.Infof("[%v] Superseded by a previous certificate", providerName)
 			continue
 		}
 		if serial == highestSerial {
 			if cryptoConstruction < certInfo.CryptoConstruction {
-				log.Printf("[%v] Keeping the previous, preferred crypto construction", providerName)
+				glog.Infof("[%v] Keeping the previous, preferred crypto construction", providerName)
 				continue
 			} else {
-				log.Printf("[%v] Upgrading the construction from %v to %v\n", providerName, certInfo.CryptoConstruction, cryptoConstruction)
+				glog.Infof("[%v] Upgrading the construction from %v to %v", providerName, certInfo.CryptoConstruction, cryptoConstruction)
 			}
 		}
 		if cryptoConstruction != XChacha20Poly1305 && cryptoConstruction != XSalsa20Poly1305 {
-			log.Printf("[%v] Cryptographic construction %v not supported\n", providerName, cryptoConstruction)
+			glog.Warningf("[%v] Cryptographic construction %v not supported", providerName, cryptoConstruction)
 			continue
 		}
 		var serverPk [32]byte
@@ -97,7 +97,7 @@ func FetchCurrentCert(proxy *Proxy, proto string, pk ed25519.PublicKey, serverAd
 		if cryptoConstruction == XChacha20Poly1305 {
 			sharedKey, err = xsecretbox.SharedKey(proxy.proxySecretKey, serverPk)
 			if err != nil {
-				log.Printf("[%v] Weak public key\n", providerName)
+				glog.Warningf("[%v] Weak public key", providerName)
 				continue
 			}
 		} else {
@@ -108,7 +108,7 @@ func FetchCurrentCert(proxy *Proxy, proto string, pk ed25519.PublicKey, serverAd
 		certInfo.CryptoConstruction = cryptoConstruction
 		copy(certInfo.ServerPk[:], serverPk[:])
 		copy(certInfo.MagicQuery[:], binCert[104:112])
-		log.Printf("[%v] Valid cert found: %x\n", providerName, certInfo.ServerPk)
+		glog.Infof("[%v] Valid cert found: [%x]", providerName, certInfo.ServerPk)
 	}
 	if certInfo.CryptoConstruction == UndefinedConstruction {
 		return certInfo, errors.New("No useable certificate found")

dnscrypt-proxy/config.go

@@ -4,10 +4,10 @@ import (
 	"errors"
 	"flag"
 	"fmt"
-	"log"
 	"time"
 
 	"github.com/BurntSushi/toml"
+	"github.com/golang/glog"
 )
 
 type Config struct {
@@ -53,7 +53,7 @@ func ConfigLoad(proxy *Proxy, config_file string) error {
 	flag.Parse()
 	config := newConfig()
 	if _, err := toml.DecodeFile(*configFile, &config); err != nil {
-		log.Println(err)
+		glog.Error(err)
 		return err
 	}
 	proxy.timeout = time.Duration(config.Timeout) * time.Millisecond

dnscrypt-proxy/main.go

@@ -2,11 +2,10 @@ package main
 
 import (
 	"crypto/rand"
-	"fmt"
-	"log"
 	"net"
 	"time"
 
+	"github.com/golang/glog"
 	"golang.org/x/crypto/curve25519"
 )
 
@@ -30,7 +29,6 @@ type Proxy struct {
 }
 
 func main() {
-	log.SetFlags(0)
 	proxy := Proxy{}
 	if err := ConfigLoad(&proxy, "dnscrypt-proxy.toml"); err != nil {
 		panic(err)
@@ -44,7 +42,7 @@ func main() {
 func (proxy *Proxy) StartProxy() {
 	proxy.questionSizeEstimator = NewQuestionSizeEstimator()
 	if _, err := rand.Read(proxy.proxySecretKey[:]); err != nil {
-		log.Fatal(err)
+		glog.Fatal(err)
 	}
 	curve25519.ScalarBaseMult(&proxy.proxyPublicKey, &proxy.proxySecretKey)
 	for _, registeredServer := range proxy.registeredServers {
@@ -53,17 +51,17 @@ func (proxy *Proxy) StartProxy() {
 	for _, listenAddrStr := range proxy.listenAddresses {
 		listenUDPAddr, err := net.ResolveUDPAddr("udp", listenAddrStr)
 		if err != nil {
-			log.Fatal(err)
+			glog.Fatal(err)
 		}
 		listenTCPAddr, err := net.ResolveTCPAddr("tcp", listenAddrStr)
 		if err != nil {
-			log.Fatal(err)
+			glog.Fatal(err)
 		}
 		if err := proxy.udpListener(listenUDPAddr); err != nil {
-			log.Fatal(err)
+			glog.Fatal(err)
 		}
 		if err := proxy.tcpListener(listenTCPAddr); err != nil {
-			log.Fatal(err)
+			glog.Fatal(err)
 		}
 	}
 	for {
@@ -79,7 +77,7 @@ func (proxy *Proxy) udpListener(listenAddr *net.UDPAddr) error {
 	}
 	go func() {
 		defer clientPc.Close()
-		fmt.Printf("Now listening to %v [UDP]\n", listenAddr)
+		glog.Infof("Now listening to %v [UDP]", listenAddr)
 		for {
 			buffer := make([]byte, MaxDNSPacketSize-1)
 			length, clientAddr, err := clientPc.ReadFrom(buffer)
@@ -102,7 +100,7 @@ func (proxy *Proxy) tcpListener(listenAddr *net.TCPAddr) error {
 	}
 	go func() {
 		defer acceptPc.Close()
-		fmt.Printf("Now listening to %v [TCP]\n", listenAddr)
+		glog.Infof("Now listening to %v [TCP]", listenAddr)
 		for {
 			clientPc, err := acceptPc.Accept()
 			if err != nil {

dnscrypt-proxy/serversInfo.go

@@ -2,8 +2,6 @@ package main
 
 import (
 	"encoding/hex"
-	"fmt"
-	"log"
 	"math/rand"
 	"net"
 	"strings"
@@ -11,6 +9,7 @@ import (
 	"time"
 
 	"github.com/VividCortex/ewma"
+	"github.com/golang/glog"
 	"golang.org/x/crypto/ed25519"
 )
 
@@ -77,7 +76,7 @@ func (serversInfo *ServersInfo) registerServer(proxy *Proxy, name string, stamp
 }
 
 func (serversInfo *ServersInfo) refresh(proxy *Proxy) {
-	fmt.Println("Refreshing certificates")
+	glog.Infof("Refreshing certificates")
 	serversInfo.RLock()
 	registeredServers := serversInfo.registeredServers
 	serversInfo.RUnlock()
@@ -108,7 +107,7 @@ func (serversInfo *ServersInfo) getOne() *ServerInfo {
 func (serversInfo *ServersInfo) fetchServerInfo(proxy *Proxy, name string, stamp ServerStamp) (ServerInfo, error) {
 	serverPk, err := hex.DecodeString(strings.Replace(stamp.serverPkStr, ":", "", -1))
 	if err != nil || len(serverPk) != ed25519.PublicKeySize {
-		log.Fatal("Invalid public key")
+		glog.Fatal("Unsupported public key: [%v]", serverPk)
 	}
 	certInfo, err := FetchCurrentCert(proxy, proxy.mainProto, serverPk, stamp.serverAddrStr, stamp.providerName)
 	if err != nil {