Switch to dep for dependency management

vendor/github.com/gin-gonic/gin/auth.go

@@ -7,27 +7,30 @@ package gin
 import (
 	"crypto/subtle"
 	"encoding/base64"
+	"net/http"
 	"strconv"
 )
 
+// AuthUserKey is the cookie name for user credential in basic auth.
 const AuthUserKey = "user"
 
-type (
-	Accounts map[string]string
-	authPair struct {
-		Value string
-		User  string
-	}
-	authPairs []authPair
-)
+// Accounts defines a key/value for user/pass list of authorized logins.
+type Accounts map[string]string
+
+type authPair struct {
+	value string
+	user  string
+}
+
+type authPairs []authPair
 
 func (a authPairs) searchCredential(authValue string) (string, bool) {
-	if len(authValue) == 0 {
+	if authValue == "" {
 		return "", false
 	}
 	for _, pair := range a {
-		if pair.Value == authValue {
-			return pair.User, true
+		if pair.value == authValue {
+			return pair.user, true
 		}
 	}
 	return "", false
@@ -45,16 +48,17 @@ func BasicAuthForRealm(accounts Accounts, realm string) HandlerFunc {
 	pairs := processAccounts(accounts)
 	return func(c *Context) {
 		// Search user in the slice of allowed credentials
-		user, found := pairs.searchCredential(c.Request.Header.Get("Authorization"))
+		user, found := pairs.searchCredential(c.requestHeader("Authorization"))
 		if !found {
 			// Credentials doesn't match, we return 401 and abort handlers chain.
 			c.Header("WWW-Authenticate", realm)
-			c.AbortWithStatus(401)
-		} else {
-			// The user credentials was found, set user's id to key AuthUserKey in this context, the userId can be read later using
-			// c.MustGet(gin.AuthUserKey)
-			c.Set(AuthUserKey, user)
+			c.AbortWithStatus(http.StatusUnauthorized)
+			return
 		}
+
+		// The user credentials was found, set user's id to key AuthUserKey in this context, the user's id can be read later using
+		// c.MustGet(gin.AuthUserKey).
+		c.Set(AuthUserKey, user)
 	}
 }
 
@@ -68,11 +72,11 @@ func processAccounts(accounts Accounts) authPairs {
 	assert1(len(accounts) > 0, "Empty list of authorized credentials")
 	pairs := make(authPairs, 0, len(accounts))
 	for user, password := range accounts {
-		assert1(len(user) > 0, "User can not be empty")
+		assert1(user != "", "User can not be empty")
 		value := authorizationHeader(user, password)
 		pairs = append(pairs, authPair{
-			Value: value,
-			User:  user,
+			value: value,
+			user:  user,
 		})
 	}
 	return pairs
@@ -87,6 +91,6 @@ func secureCompare(given, actual string) bool {
 	if subtle.ConstantTimeEq(int32(len(given)), int32(len(actual))) == 1 {
 		return subtle.ConstantTimeCompare([]byte(given), []byte(actual)) == 1
 	}
-	/* Securely compare actual to itself to keep constant time, but always return false */
+	// Securely compare actual to itself to keep constant time, but always return false.
 	return subtle.ConstantTimeCompare([]byte(actual), []byte(actual)) == 1 && false
 }