Refactor with suggested fixes

.github/workflows/test.yml

@@ -4,13 +4,13 @@ jobs:
   test:
     strategy:
       matrix:
-        go-version: [1.22.x]
+        go-version: [1.26.x]
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/setup-go@v3
+    - uses: actions/setup-go@v6
       with:
         go-version: ${{ matrix.go-version }}
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v6
     - run: sudo add-apt-repository ppa:inkscape.dev/stable
     - run: sudo apt-get update
     - run: sudo apt-get install inkscape -y

cmd/violet/serve.go

@@ -49,7 +49,7 @@ func (s *serveCmd) Usage() string {
 `
 }
 
-func (s *serveCmd) Execute(_ context.Context, _ *flag.FlagSet, _ ...interface{}) subcommands.ExitStatus {
+func (s *serveCmd) Execute(_ context.Context, _ *flag.FlagSet, _ ...any) subcommands.ExitStatus {
 	if s.debugLog {
 		logger.Logger.SetLevel(log.DebugLevel)
 	}

cmd/violet/setup.go

@@ -38,7 +38,7 @@ func (s *setupCmd) Usage() string {
 `
 }
 
-func (s *setupCmd) Execute(_ context.Context, _ *flag.FlagSet, _ ...interface{}) subcommands.ExitStatus {
+func (s *setupCmd) Execute(_ context.Context, _ *flag.FlagSet, _ ...any) subcommands.ExitStatus {
 	// get absolute path to specify files
 	wdAbs, err := filepath.Abs(s.wdPath)
 	if err != nil {
@@ -96,7 +96,7 @@ func (s *setupCmd) Execute(_ context.Context, _ *flag.FlagSet, _ ...interface{})
 		{
 			Name:   "RateLimit",
 			Prompt: &survey.Input{Message: "Rate limit", Default: "300", Help: "Number of allowed requests per minute per IP"},
-			Validate: func(ans interface{}) error {
+			Validate: func(ans any) error {
 				if ansStr, ok := ans.(string); ok {
 					_, err := strconv.ParseUint(ansStr, 10, 64)
 					return err
@@ -160,7 +160,7 @@ func (s *setupCmd) Execute(_ context.Context, _ *flag.FlagSet, _ ...interface{})
 	// don't bother with this part is the api won't be listening
 	if answers.ApiListen != "" {
 		// ask for url
-		err = survey.AskOne(&survey.Input{Message: "API URL", Default: "api.example.com/violet", Help: "Enter the URL which should point to the internal Violet API"}, &answers.ApiUrl, survey.WithValidator(func(ans interface{}) error {
+		err = survey.AskOne(&survey.Input{Message: "API URL", Default: "api.example.com/violet", Help: "Enter the URL which should point to the internal Violet API"}, &answers.ApiUrl, survey.WithValidator(func(ans any) error {
 			if ansStr, ok := ans.(string); ok {
 				_, err := url.Parse(ansStr)
 				return err
@@ -202,7 +202,7 @@ func (s *setupCmd) Execute(_ context.Context, _ *flag.FlagSet, _ ...interface{})
 	return subcommands.ExitSuccess
 }
 
-func listenAddressValidator(ans interface{}) error {
+func listenAddressValidator(ans any) error {
 	if ansStr, ok := ans.(string); ok {
 		// empty string means disable
 		if ansStr == "" {

router/manager.go

@@ -9,6 +9,7 @@ import (
 	"github.com/1f349/violet/target"
 	"github.com/mrmelon54/rescheduler"
 	"net/http"
+	"slices"
 	"strings"
 	"sync"
 )
@@ -127,12 +128,8 @@ func (m *Manager) GetAllRoutes(hosts []string) ([]target.RouteWithActive, error)
 			Active: row.Active,
 		}
 
-		for _, i := range hosts {
-			// if this is never true then the domain was mistakenly grabbed from the database
-			if a.OnDomain(i) {
-				s = append(s, a)
-				break
-			}
+		if slices.ContainsFunc(hosts, a.OnDomain) {
+			s = append(s, a)
 		}
 	}
 
@@ -177,12 +174,8 @@ func (m *Manager) GetAllRedirects(hosts []string) ([]target.RedirectWithActive,
 			Active: row.Active,
 		}
 
-		for _, i := range hosts {
-			// if this is never true then the domain was mistakenly grabbed from the database
-			if a.OnDomain(i) {
-				s = append(s, a)
-				break
-			}
+		if slices.ContainsFunc(hosts, a.OnDomain) {
+			s = append(s, a)
 		}
 	}
 

servers/https_test.go

@@ -44,7 +44,7 @@ func TestNewHttpsServer_RateLimit(t *testing.T) {
 
 	wg := &sync.WaitGroup{}
 	wg.Add(5)
-	for i := 0; i < 5; i++ {
+	for range 5 {
 		go func() {
 			defer wg.Done()
 			rec := httptest.NewRecorder()

target/route.go

@@ -9,6 +9,7 @@ import (
 	"github.com/rs/cors"
 	"golang.org/x/net/http/httpguts"
 	"io"
+	"maps"
 	"net"
 	"net/http"
 	"net/textproto"
@@ -70,9 +71,7 @@ func (r Route) HasFlag(flag Flags) bool {
 // UpdateHeaders takes an existing set of headers and overwrites them with the
 // extra headers.
 func (r Route) UpdateHeaders(header http.Header) {
-	for k, v := range r.Headers {
-		header[k] = v
-	}
+	maps.Copy(header, r.Headers)
 }
 
 // ServeHTTP responds with the data proxied from the internal server to the
@@ -146,10 +145,8 @@ func (r Route) internalServeHTTP(rw http.ResponseWriter, req *http.Request) {
 	// if extra route headers are set
 	if r.Headers != nil {
 		// loop over headers
-		for k, v := range r.Headers {
-			// copy header into the internal request
-			req2.Header[k] = v
-		}
+		// copy header into the internal request
+		maps.Copy(req2.Header, r.Headers)
 	}
 
 	// if forward host is enabled then send the host
@@ -316,7 +313,7 @@ var hopHeaders = []string{
 func removeHopByHopHeaders(h http.Header) {
 	// RFC 7230, section 6.1: Remove headers listed in the "Connection" header.
 	for _, f := range h["Connection"] {
-		for _, sf := range strings.Split(f, ",") {
+		for sf := range strings.SplitSeq(f, ",") {
 			if sf = textproto.TrimString(sf); sf != "" {
 				h.Del(sf)
 			}

utils/domain-utils.go

@@ -55,11 +55,11 @@ func ReplaceSubdomainWithWildcard(domain string) (string, bool) {
 // www.example.com => example.com
 func GetParentDomain(domain string) (string, bool) {
 	// if a valid index isn't found then return false
-	n := strings.IndexByte(domain, '.')
-	if n == -1 {
+	_, after, ok := strings.Cut(domain, ".")
+	if !ok {
 		return "", false
 	}
-	return domain[n+1:], true
+	return after, true
 }
 
 // GetTopFqdn returns the top domain stripping off multiple layers of subdomains.