mod: update dependencies; do not automatically update dependencies in builds

If users are limited they are only allowed to authenticate via their ssh
private-public key-pair, which the configuration holds for each accepted
user accordingly.

.gitea/workflows/release.yaml

@@ -18,8 +18,14 @@ jobs:
         uses: actions/setup-go@v5
         with:
           go-version: 1.24.x
+      - name: Spell checking
+        uses: crate-ci/typos@v1.39.0
+        with:
+          config: ./.typos-config
       - name: Install dependencies
-        run: go get -u .
+        run: go get .
+      - name: Run tests
+        run: go test ./...
       - name: Build
         run: CGO_ENABLED=0 GOOS=linux go build -ldflags "-s -w" -o ./bin/serve main.go
       - name: Release build artifacts

.gitea/workflows/test.yaml

@@ -18,10 +18,10 @@ jobs:
         with:
           go-version: 1.24.x
       - name: Spell checking
-        uses: crate-ci/typos@v1.25.0
+        uses: crate-ci/typos@v1.39.0
         with:
           config: ./.typos-config
       - name: Install dependencies
-        run: go get -u .
+        run: go get .
       - name: Run tests
         run: go test ./...

go.mod

@@ -7,6 +7,7 @@ require (
 	github.com/charmbracelet/ssh v0.0.0-20250826160808-ebfa259c7309
 	github.com/charmbracelet/wish v1.4.7
 	github.com/spf13/viper v1.21.0
+	golang.org/x/crypto v0.43.0
 )
 
 require (
@@ -45,7 +46,6 @@ require (
 	github.com/subosito/gotenv v1.6.0 // indirect
 	github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e // indirect
 	go.yaml.in/yaml/v3 v3.0.4 // indirect
-	golang.org/x/crypto v0.43.0 // indirect
 	golang.org/x/exp v0.0.0-20251023183803-a4bb9ffd2546 // indirect
 	golang.org/x/sys v0.37.0 // indirect
 	golang.org/x/text v0.30.0 // indirect

internal/serve/serve.go

@@ -15,6 +15,7 @@ import (
 	"github.com/charmbracelet/wish"
 	"github.com/charmbracelet/wish/activeterm"
 	"github.com/charmbracelet/wish/logging"
+	gossh "golang.org/x/crypto/ssh"
 )
 
 // Setup default logger to append or create a new log file `log` in the current
@@ -51,16 +52,24 @@ func setupSshServer(host string, port string, host_key_path string, users map[st
 			}
 			return false
 		}),
+		wish.WithKeyboardInteractiveAuth(func(_ ssh.Context, _ gossh.KeyboardInteractiveChallenge) bool {
+			if len(users) == 0 {
+				// no users provided, meaning there is no user authentication, everyone is allowed to connect
+				return true
+			}
+			// NOTE interactive logins through keyboard challenges shall not be allowed; use
+			// ssh public-private key-pairs instead for limited access
+			return false
+		}),
 		ssh.AllocatePty(),
 		wish.WithMiddleware(
 			func(next ssh.Handler) ssh.Handler {
 				return func(s ssh.Session) {
-					cmd := wish.Command(s, name, args...)
+					provided_args := s.Command()
-					file, err := os.OpenFile("log", os.O_APPEND|os.O_WRONLY|os.O_CREATE, 0600)
+					if len(provided_args) > 0 {
-					if err != nil {
+						args = provided_args
-						wish.Fatalln(s, err)
 					}
-					cmd.SetStderr(file)
+					cmd := wish.Command(s, name, args...)
 					if err := cmd.Run(); err != nil {
 						wish.Fatalln(s, err)
 					}

main.go

@@ -2,7 +2,6 @@ package main
 
 import (
 	"fmt"
-	"os"
 
 	"github.com/spf13/viper"
 	"yves-biener.de/wish-serve/internal/serve"
@@ -15,12 +14,19 @@ func createDefaultConfig() {
 	viper.SetDefault("key.dir", ".ssh")
 	viper.SetDefault("key.name", "ssh_ed25519_key")
 	viper.SetDefault("app.name", "echo")
-	viper.SetDefault("app.args", []string{"Hello World"})
+	viper.SetDefault("app.args", []string{"Hello", "World"})
 }
 
-// Load the configuration file from (`$HOME/.config/serve/config.yml` or
+// Load the configuration file from any of the following locations (loading the
-// `./config.yml`) if it exists. Otherwise use the default values from
+// first one with an existing configuration):
-// `createDefaultConfig()`.
+//   - `$HOME/.config/serve/config.yml`
+//   - `./config.yml`
+//
+// If no configuration is found in any of the defined locations the default
+// values of `createDefaultConfig` will remain unchanged.
+//
+// Invalid configuration files will cause a fatal error causing the application
+// to panic.
 func loadConfig() {
 	viper.SetConfigName("config")
 	viper.SetConfigType("yml")
@@ -33,29 +39,9 @@ func loadConfig() {
 	}
 }
 
-// Overwrite (default) configuration value for the application to serve with
-// given command line arguments.
-//
-// NOTE: This will also overwrite the configuration for the `app` entry from the
-// configuration file.
-func overwriteServeCommand() {
-	if len(os.Args) >= 2 {
-		name := os.Args[1]
-		viper.Set("app.name", name)
-		if len(os.Args) >= 3 {
-			args := os.Args[2:]
-			viper.Set("app.args", args)
-		} else {
-			// no arguments provided -> clear app arguments
-			viper.Set("app.args", []string{})
-		}
-	}
-}
-
 func main() {
 	createDefaultConfig()
 	loadConfig()
-	overwriteServeCommand()
 
 	serve.Serve(
 		viper.GetString("host"),