Add syslog-address log-opt

Signed-off-by: Antonio Murdaca <me@runcom.ninja>
(cherry picked from commit e8c88d2533)

pkg/urlutil/url.go

@@ -1,19 +0,0 @@
-package urlutil
-
-import "strings"
-
-var validUrlPrefixes = []string{
-	"http://",
-	"https://",
-}
-
-// IsURL returns true if the provided str is a valid URL by doing
-// a simple change for the transport of the url.
-func IsURL(str string) bool {
-	for _, prefix := range validUrlPrefixes {
-		if strings.HasPrefix(str, prefix) {
-			return true
-		}
-	}
-	return false
-}

pkg/urlutil/urlutil.go

@@ -6,26 +6,25 @@ import (
 )
 
 var (
-	validPrefixes = []string{
-		"git://",
-		"github.com/",
-		"git@",
+	validPrefixes = map[string][]string{
+		"url":       {"http://", "https://"},
+		"git":       {"git://", "github.com/", "git@"},
+		"transport": {"tcp://", "udp://", "unix://"},
 	}
-
 	urlPathWithFragmentSuffix = regexp.MustCompile(".git(?:#.+)?$")
 )
 
+// IsURL returns true if the provided str is an HTTP(S) URL.
+func IsURL(str string) bool {
+	return checkURL(str, "url")
+}
+
 // IsGitURL returns true if the provided str is a git repository URL.
 func IsGitURL(str string) bool {
 	if IsURL(str) && urlPathWithFragmentSuffix.MatchString(str) {
 		return true
 	}
-	for _, prefix := range validPrefixes {
-		if strings.HasPrefix(str, prefix) {
-			return true
-		}
-	}
-	return false
+	return checkURL(str, "git")
 }
 
 // IsGitTransport returns true if the provided str is a git transport by inspecting
@@ -33,3 +32,17 @@ func IsGitURL(str string) bool {
 func IsGitTransport(str string) bool {
 	return IsURL(str) || strings.HasPrefix(str, "git://") || strings.HasPrefix(str, "git@")
 }
+
+// IsTransportURL returns true if the provided str is a transport (tcp, udp, unix) URL.
+func IsTransportURL(str string) bool {
+	return checkURL(str, "transport")
+}
+
+func checkURL(str, kind string) bool {
+	for _, prefix := range validPrefixes[kind] {
+		if strings.HasPrefix(str, prefix) {
+			return true
+		}
+	}
+	return false
+}