feat: refactor configuration + html page template data

.goreleaser.yaml

@@ -57,6 +57,7 @@ nfpms:
         packager: deb
       - src: misc/packaging/systemd/rebound.env
         dst: /etc/rebound/environ
+        type: config|noreplace
         packager: deb
 
       # RPM
@@ -64,6 +65,7 @@ nfpms:
         dst: /usr/lib/systemd/system/rebound.service
         packager: rpm    
       - src: misc/packaging/systemd/rebound.env
+        type: config|noreplace
         dst: /etc/rebound/environ
         packager: rpm
 
@@ -74,6 +76,7 @@ nfpms:
           mode: 0755
         packager: apk
       - src: misc/packaging/openrc/rebound.conf
+        type: config|noreplace
         dst: /etc/conf.d/rebound
         file_info:
           mode: 0755
@@ -84,14 +87,6 @@ nfpms:
         type: dir
         file_info:
           mode: 0700
-      - dst: /etc/rebound/custom
-        type: dir
-        file_info:
-          mode: 0700
-      - dst: /usr/share/rebound
-        type: dir
-        file_info:
-          mode: 0700
       - dst: /var/log/rebound
         type: dir
         file_info:

cmd/server/main.go

@@ -1,7 +1,6 @@
 package main
 
 import (
-	"flag"
 	"log"
 	"os"
 	"os/signal"
@@ -19,30 +18,17 @@ func main() {
 		log.Fatalf("[ERROR] %+v", errors.WithStack(err))
 	}
 
-	// Global Options
-	address := flag.String("address", opts.Address, "server listening address")
-
-	// SSH Options
-	sockDir := flag.String("ssh-sock-dir", opts.SSH.SockDir, "ssh sock directory")
-	publicPort := flag.Uint("ssh-public-port", opts.SSH.PublicPort, "ssh public port")
-	publicHost := flag.String("ssh-public-host", opts.SSH.PublicHost, "ssh public host")
-	hostKey := flag.String("ssh-host-key", opts.SSH.HostKey, "ssh host key")
-
-	// HTTP Options
-	customDir := flag.String("http-custom-dir", opts.HTTP.CustomDir, "http custom templates/assets directory")
-
-	flag.Parse()
-
 	server := rebound.NewServer(
-		rebound.WithAddress(*address),
+		rebound.WithAddress(opts.Address),
 		rebound.WithSSHOption(
-			ssh.WithSockDir(*sockDir),
+			ssh.WithSockDir(opts.SSH.SockDir),
-			ssh.WithPublicHost(*publicHost),
+			ssh.WithPublicHost(opts.SSH.PublicHost),
-			ssh.WithPublicPort(*publicPort),
+			ssh.WithPublicPort(opts.SSH.PublicPort),
-			ssh.WithHostKey(*hostKey),
+			ssh.WithHostKey(opts.SSH.HostKey),
 		),
 		rebound.WitHTTPOption(
-			http.WithCustomDir(*customDir),
+			http.WithCustomDir(opts.HTTP.CustomDir),
+			http.WithTemplateData(opts.HTTP.TemplateData),
 		),
 	)
 

http/options.go

@@ -1,10 +1,19 @@
 package http
 
-import "log"
+import (
+	"log"
+)
 
 type Options struct {
-	Logger    func(message string, args ...any)
+	Logger       func(message string, args ...any)
-	CustomDir string `env:"CUSTOM_DIR"`
+	CustomDir    string        `env:"CUSTOM_DIR"`
+	TemplateData *TemplateData `envPrefix:"TEMPLATE_DATA_"`
+}
+
+type TemplateData struct {
+	Title         string `env:"TITLE"`
+	SSHPublicHost string `env:"SSH_PUBLIC_HOST"`
+	SSHPublicPort int    `env:"SSH_PUBLIC_PORT"`
 }
 
 type OptionFunc func(*Options)
@@ -13,6 +22,11 @@ func DefaultOptions() *Options {
 	return &Options{
 		Logger:    log.Printf,
 		CustomDir: "",
+		TemplateData: &TemplateData{
+			Title:         "Rebound",
+			SSHPublicHost: "127.0.0.1",
+			SSHPublicPort: 2222,
+		},
 	}
 }
 
@@ -27,3 +41,9 @@ func WithCustomDir(customDir string) func(*Options) {
 		opts.CustomDir = customDir
 	}
 }
+
+func WithTemplateData(templateData *TemplateData) func(*Options) {
+	return func(opts *Options) {
+		opts.TemplateData = templateData
+	}
+}

http/server.go

@@ -30,13 +30,7 @@ type Server struct {
 }
 
 func (s *Server) serveHomepage(w http.ResponseWriter, r *http.Request) {
-	data := struct {
+	s.renderTemplate(w, "index", s.opts.TemplateData)
-		Title string
-	}{
-		Title: "Rebound",
-	}
-
-	s.renderTemplate(w, "index", data)
 }
 
 func (s *Server) Serve(l net.Listener) error {

http/templates/footer.html

@@ -2,7 +2,7 @@
 <footer class="footer">
     <div class="container">
         <div class="content has-text-centered">
-            Ce service est propulsé par Rebound, un logiciel libre diffusé sous licence <a href="#">AGPL-3.0</a>.
+            Ce service est propulsé par <a href="https://forge.cadoles.com/wpetit/rebound" title="Rebound repository">Rebound</a>, un logiciel libre diffusé sous licence <a href="https://www.gnu.org/licenses/agpl-3.0.en.html#license-text">AGPL-3.0</a>.
         </div>
     </div>
 </footer>

http/templates/index.html

@@ -17,7 +17,7 @@
                 <p>Rebound est un serveur SSH permettant de créer des tunnels TCP/IP éphémères et privés entre 2 machines positionnées
                     derrière un <abbr title="Network Address Traversal">NAT</abbr>.</p>
                 <p>Pour l'utiliser <strong>un simple client SSH suffit !</strong></p>
-                <pre class="has-background-dark	has-text-white-ter is-family-monospace">ssh -R 0:127.0.0.1:<span class="has-text-info">&lt;port&gt;</span> rebound@rebound.cadol.es</pre>
+                <pre class="has-background-dark	has-text-white-ter is-family-monospace">ssh -R 0:127.0.0.1:<span class="has-text-info">&lt;port&gt;</span> rebound@{{ .SSHPublicHost }} -p {{ .SSHPublicPort }}</pre>
                 <p class="is-italic">Où <span class="has-text-info">&lt;port&gt;</span> est à remplacer par le port du service
                     s'exécutant sur votre machine en local.</span>
                 <p>Une fois connecté, suivez les instructions. 😉</p>

misc/packaging/openrc/rebound.conf

@@ -3,4 +3,7 @@ export REBOUND_HTTP_CUSTOM_DIR=/etc/rebound/custom
 export REBOUND_SSH_PUBLIC_HOST=rebound
 export REBOUND_SSH_PUBLIC_PORT=2222
 export REBOUND_SSH_SOCK_DIR=/var/lib/rebound/socks
-export REBOUND_SSH_HOST_KEY=/etc/rebound/host.key
+export REBOUND_SSH_HOST_KEY=/etc/rebound/host.key
+export REBOUND_HTTP_TEMPLATE_DATA_TITLE=Rebound
+export REBOUND_HTTP_TEMPLATE_DATA_SSH_PUBLIC_HOST=127.0.0.1
+export REBOUND_HTTP_TEMPLATE_DATA_SSH_PUBLIC_PORT=8080

misc/packaging/systemd/rebound.env

@@ -3,4 +3,7 @@ REBOUND_HTTP_CUSTOM_DIR=/var/lib/rebound/custom
 REBOUND_SSH_PUBLIC_HOST=rebound
 REBOUND_SSH_PUBLIC_PORT=8080
 REBOUND_SSH_SOCK_DIR=/var/lib/rebound/socks
-REBOUND_SSH_HOST_KEY=/var/lib/rebound/host.key
+REBOUND_SSH_HOST_KEY=/var/lib/rebound/host.key
+REBOUND_HTTP_TEMPLATE_DATA_TITLE=Rebound
+REBOUND_HTTP_TEMPLATE_DATA_SSH_PUBLIC_HOST=127.0.0.1
+REBOUND_HTTP_TEMPLATE_DATA_SSH_PUBLIC_PORT=8080

server.go

@@ -47,6 +47,7 @@ func (s *Server) Start() error {
 
 		server := http.NewServer(
 			http.WithCustomDir(s.opts.HTTP.CustomDir),
+			http.WithTemplateData(s.opts.HTTP.TemplateData),
 			http.WithLogger(s.opts.HTTP.Logger),
 		)
 

ssh/request_handler.go

@@ -80,6 +80,11 @@ func (s *Server) handleRequest(ctx ssh.Context, srv *ssh.Server, req *gossh.Requ
 
 		addr := s.getSocketPath(sessionID)
 
+		if err := s.ensureFileDir(addr); err != nil {
+			s.log("[ERROR] %+v", errors.WithStack(err))
+			return false, []byte("internal server error")
+		}
+
 		ln, err := net.Listen("unix", addr)
 		if err != nil {
 			s.log("[ERROR] %+v", errors.WithStack(err))
@@ -200,6 +205,15 @@ func (s *Server) getSocketPath(sessionID SessionID) string {
 	return filepath.Join(s.opts.SockDir, fmt.Sprintf("%s.sock", sessionID))
 }
 
+func (s *Server) ensureFileDir(file string) error {
+	dir := filepath.Dir(file)
+	if err := os.MkdirAll(dir, os.FileMode(0750)); err != nil {
+		return errors.WithStack(err)
+	}
+
+	return nil
+}
+
 func generateToken(length int) (string, error) {
 	chars := []rune(
 		"ABCDEFGHIJKLMNOPQRSTUVWXYZ" +