.vagrant/machines/default/libvirt/created_networks

@@ -10,4 +10,3 @@
 5533801d-70e3-4c21-9942-82d20930c789
 5533801d-70e3-4c21-9942-82d20930c789
 5533801d-70e3-4c21-9942-82d20930c789
-5533801d-70e3-4c21-9942-82d20930c789

README.md

@@ -8,18 +8,14 @@ Users to use Webtop in their own, separate session. A good illustration is this:
 To build the project, you can just use "make"
 
 On Debian 12, you will need the following dependencies:
-```sh
+```
 apt install -y git wget podman make gcc libgpgme-dev build-essential pkgconf pkgconf-bin libdevmapper-dev libbtrfs-dev
 ```
 
 ## Installing
 Executing `make install` will install and start podterminal as a systemd service, including an example config file.
 
-## Usage
-There is some basic Documentation in the config file to explain the usage of the keys. For more in-depth explanations 
-feel free to contact me, and I will add it to the documentation
-
-## Known Bugs
-- Images need to be pulled first as root
-- Not compatible with default KASM Docker images (needs http WSS access)
-- reloading browser on startup might be necessary, especially if the target image is slow to start
+## Running
+To run the built binary, just execute it as root. You will have to have Podman installed and its socket enabled.
+Currently you have to set the Image, port etc. directly in the Source Code, however that should be eventually moved into
+a config file.

exampleconfig.yaml

@@ -11,7 +11,7 @@ envvars:
 # Container Image you want to use
 image: git.jmbit.de/jmb/webtop-plus:latest
 # Maximum age of Session
-maxage: 0
+maxage: 10800
 # Port Podterminal should listen to
 port: 80
 # Files that will be copied into container on startup
@@ -24,5 +24,3 @@ ssl_cert: /etc/ssl/certs/ssl-cert-snakeoil.pem
 ssl_cert_key: /etc/ssl/private/ssl-cert-snakeoil.key
 # Blocks accessing /files and /files/socket.io to avoid File transfer
 block_filebrowser: false
-# Delete running containers when restarting podterminal
-timeout_on_restart: true

main.go

@@ -25,7 +25,6 @@ func main() {
 	log.Println("Dropped Privileges")
 	g.Go(pods.GarbageCollector)
 	g.Go(pods.PullImage)
-	g.Go(web.IdleSessionCleanup)
 
 	// prevent main thread from dying
 	if err := g.Wait(); err != nil {

pods/container.go

@@ -2,7 +2,6 @@ package pods
 
 import (
 	"log"
-	"time"
 
 	"github.com/containers/podman/v4/pkg/bindings/containers"
 	"github.com/containers/podman/v4/pkg/specgen"
@@ -10,8 +9,6 @@ import (
 	"github.com/spf13/viper"
 )
 
-// CreateContainer connects to the Podman socket defined in the "Socket" variable in this scope
-// and creates a new container using the Image defined in the config file
 func CreateContainer() (string, error) {
 	image := viper.GetString("image")
 	conn := Socket
@@ -53,30 +50,15 @@ func DestroyContainer(id string) error {
 	return nil
 }
 
-// GetContainerIP returns a
 func GetContainerIP(id string) (string, error) {
 	conn := Socket
-	var ip string
-	var err error
-	i := 0
 
-	for i < 50 {
-		time.Sleep(100 * time.Millisecond)
-		container, err := containers.Inspect(conn, id, nil)
-		if err != nil {
-			log.Println("Could not get IP of container", err)
-			return "", err
-		}
-		ip = container.NetworkSettings.IPAddress
-		log.Println(ip)
-		if len(ip) > 5 {
-			break
-		}
-		i++
-	}
-	if i > 50 {
-		log.Println("timed out waiting for IP")
+	container, err := containers.Inspect(conn, id, nil)
+	if err != nil {
+		log.Println("Could not get IP of container", err)
+		return "", err
 	}
+	ip := container.NetworkSettings.IPAddress
 
 	return ip, err
 }

pods/garbageCollector.go

@@ -1,18 +1,10 @@
 package pods
 
 import (
-	"log"
 	"time"
-
-	"github.com/containers/podman/v4/pkg/bindings/volumes"
-	"github.com/spf13/viper"
 )
 
-// GarbageCollector is a goroutine that cleans up old Containers
 func GarbageCollector() error {
-	if viper.GetBool("timeout_on_restart") {
-		timeoutExistingContainers()
-	}
 	for {
 		err := Cleanup()
 		if err != nil {
@@ -21,28 +13,3 @@ func GarbageCollector() error {
 		time.Sleep(time.Minute * 10)
 	}
 }
-
-func timeoutExistingContainers() {
-	var oldContainers []string
-
-	for _, container := range containerList() {
-		oldContainers = append(oldContainers, container.ID)
-	}
-	OldContainers = append(OldContainers, oldContainers...)
-	log.Println("old Containers: ", oldContainers)
-
-}
-
-func pruneVolumes() error {
-
-	results, err := volumes.Prune(Socket, nil)
-	if err != nil {
-		return err
-	}
-	resultLen := len(results)
-	for i, result := range results {
-		log.Printf("[%d/%d] %s %d MB", i, resultLen, result.Id, result.Size/1024/1024)
-	}
-	return nil
-
-}

pods/manager.go

@@ -3,6 +3,7 @@ package pods
 import (
 	"context"
 	"log"
+	"net"
 	"time"
 
 	"github.com/containers/podman/v4/pkg/bindings"
@@ -13,8 +14,7 @@ import (
 )
 
 var Socket context.Context
-
-var OldContainers []string
+var rawSocket net.Conn
 
 func socketConnection() context.Context {
 	uri := "unix:///run/podman/podman.sock"
@@ -25,8 +25,19 @@ func socketConnection() context.Context {
 	return conn
 }
 
+func rawConnection() net.Conn {
+	connection, err := net.Dial("unix", "unix:///run/podman/podman.sock")
+	if err != nil {
+		log.Println(
+			"Could not establish raw UNIX socket connection, certain features will not work properly",
+		)
+	}
+	return connection
+}
+
 func ConnectSocket() {
 	Socket = socketConnection()
+	rawSocket = rawConnection()
 }
 
 func PullImage() error {
@@ -51,21 +62,22 @@ func Cleanup() error {
 	containerList := containerList()
 
 	for _, container := range containerList {
-		for _, ctid := range OldContainers {
-			if container.ID == ctid {
-				err := containers.Kill(Socket, container.ID, nil)
-				if err != nil {
-					log.Println(err)
-					return err
-				}
-				_, err = containers.Remove(Socket, container.ID, nil)
-				if err != nil {
-					log.Println(err)
-					return err
-				}
+		now := time.Now()
+		maxAge := time.Second * time.Duration(viper.GetInt("maxAge"))
+		containerAge := now.Sub(container.Created)
+		if containerAge > maxAge {
+
+			err := containers.Kill(Socket, container.ID, nil)
+			if err != nil {
+				log.Println(err)
+				return err
+			}
+			_, err = containers.Remove(Socket, container.ID, nil)
+			if err != nil {
+				log.Println(err)
+				return err
 			}
 		}
-
 	}
 	return nil
 }

readConfig.go

@@ -5,12 +5,9 @@ import (
 	"os"
 
 	"github.com/spf13/viper"
-
-	"git.jmbit.de/jmb/podterminal/utils"
 )
 
 func readConfigFile() {
-	sessionKey, _ := utils.RandomString(64)
 	log.Println("Reading Config")
 	viper.SetConfigFile("/etc/podterminal/config.yaml")
 	viper.SetDefault("port", 80)
@@ -24,10 +21,6 @@ func readConfigFile() {
 	viper.SetDefault("skel_target", "/")
 	viper.SetDefault("skel_user", "")
 	viper.SetDefault("block_filebrowser", false)
-	viper.SetDefault("session_key", sessionKey)
-	viper.SetDefault("container_port", 3000)
-	viper.SetDefault("container_protocol", "http")
-	viper.SetDefault("timeout_on_restart", true)
 	viper.SetDefault("envvars",
 		map[string]string{
 			"CUSTOM_USER": "user",

web/reverseProxy.go

@@ -3,14 +3,12 @@ package web
 import (
 	"fmt"
 	"log"
-	"net/http"
 	"net/http/httputil"
 	"net/url"
 	"time"
 
 	"github.com/gin-contrib/sessions"
 	"github.com/gin-gonic/gin"
-	"github.com/spf13/viper"
 
 	"git.jmbit.de/jmb/podterminal/pods"
 )
@@ -29,15 +27,6 @@ func createReverseProxy(backendService string) (*httputil.ReverseProxy, error) {
 			request.SetURL(backendURL)
 			request.Out.Host = request.In.Host
 		},
-		ModifyResponse: func(response *http.Response) error {
-			if response.StatusCode == http.StatusBadGateway {
-				time.Sleep(time.Second)
-				response.StatusCode = 307
-				response.Header.Set("Location", "/")
-
-			}
-			return nil
-		},
 	}
 
 	return proxy, err
@@ -45,43 +34,33 @@ func createReverseProxy(backendService string) (*httputil.ReverseProxy, error) {
 
 func containerProxy(c *gin.Context) {
 	session := sessions.Default(c)
-	sessionID := ""
-	if session.Get("ct") == nil && session.Get("ready") == nil {
-		session.Set("ready", false)
-		session.Save()
+	session.Save()
+	sessionID := session.ID()
+	if session.Get("ct") == nil {
 		log.Println("Creating Container for Session ", sessionID)
 		ct, err := pods.CreateContainer()
-		session.Set("ct", ct)
-		session.Save()
 		if err != nil {
 			c.HTML(500, "Error", fmt.Sprintf("[%s] Could not create Container: %v", sessionID, err))
-			session.Delete("ct")
-			session.Save()
 			c.Abort()
 		}
 		err = pods.StartContainer(ct)
 		if err != nil {
 			c.HTML(500, "Error", fmt.Sprintf("[%s] Could not start Container: %v", sessionID, err))
-			session.Delete("ct")
-			session.Save()
 			c.Abort()
 		}
-
+		// Hack to wait for Container to start up and get assigned an IP
+		time.Sleep(3 * time.Second)
 		ctip, err := pods.GetContainerIP(ct)
 
 		if err != nil {
 			c.HTML(500, "Error", fmt.Sprintf("[%s] Could not get Container ip: %v", sessionID, err))
-			session.Delete("ct")
-			session.Save()
 			c.Abort()
 		}
 
 		// Soft fail Skel
 		// _ = pods.CopySkelToContainer(ct)
 
-		proxies[ct], err = createReverseProxy(
-			fmt.Sprintf("http://%s:%d", ctip, viper.GetInt("container_port")),
-		)
+		proxies[ct], err = createReverseProxy(fmt.Sprintf("http://%s:3000", ctip))
 
 		if err != nil {
 			c.HTML(
@@ -89,13 +68,11 @@ func containerProxy(c *gin.Context) {
 				"Error",
 				fmt.Sprintf("[%s] Could not create Container Proxy: %v", sessionID, err),
 			)
-			session.Delete("ct")
-			session.Save()
 			c.Abort()
 		}
-		session.Set("ready", true)
+		session.Set("ct", ct)
 		session.Save()
-		c.Redirect(307, "/")
+		c.Redirect(301, "/")
 	} else {
 		sessionCT := session.Get("ct")
 		switch sessionCT.(type) {
@@ -103,26 +80,11 @@ func containerProxy(c *gin.Context) {
 
 		default:
 			c.HTML(500, "Error", "Session Container ID is not a string")
-			session.Delete("ct")
-			session.Delete("ready")
-			session.Save()
 			c.Abort()
 		}
-		if session.Get("ready").(bool) == false {
-			time.Sleep(time.Second)
-			c.Redirect(307, "/")
-		}
 		id := session.Get("ct").(string)
 		proxy := proxies[id]
-		if proxy != nil {
-			proxy.ServeHTTP(c.Writer, c.Request)
-		} else {
-			session.Delete("ct")
-			session.Delete("ready")
-			session.Save()
-			c.Abort()
-		}
-
+		proxy.ServeHTTP(c.Writer, c.Request)
 	}
 
 }

web/router.go

@@ -8,6 +8,7 @@ import (
 	"github.com/gin-contrib/sessions"
 	"github.com/gin-contrib/sessions/cookie"
 	"github.com/gin-gonic/gin"
+	"github.com/google/uuid"
 	"github.com/spf13/viper"
 )
 
@@ -41,7 +42,7 @@ func setupRouter() *gin.Engine {
 	gin.ForceConsoleColor()
 	gin.SetMode("release")
 	router := gin.New()
-	store := cookie.NewStore([]byte(viper.GetString("session_key")))
+	store := cookie.NewStore([]byte(uuid.NewString()))
 	store.Options(sessions.Options{
 		MaxAge: viper.GetInt("maxAge"),
 	})

web/sessionAging.go

@@ -1,60 +0,0 @@
-package web
-
-import (
-	"log"
-	"time"
-
-	"github.com/spf13/viper"
-
-	"git.jmbit.de/jmb/podterminal/pods"
-)
-
-type sessionData struct {
-	lastAccess *time.Time
-	sessionID  string
-}
-
-var invalidSessions []string
-var sessionLastAccess map[string]*sessionData
-
-func initSessionAging() error {
-	sessionLastAccess = make(map[string]*sessionData)
-
-	return nil
-}
-
-func updateSession(id string, sessionID string) {
-	nowTime := time.Now()
-	sessionLastAccess[id].lastAccess = &nowTime
-	sessionLastAccess[id].sessionID = sessionID
-}
-
-func deleteIdleSessions() {
-	idleTimout := viper.GetInt("session_timeout")
-	tenMinutesAgo := -time.Duration(idleTimout) * time.Second
-	oldAge := time.Now().Add(tenMinutesAgo)
-	for session, sessionData := range sessionLastAccess {
-		log.Printf("Session %s last connected at %s", session, sessionData.lastAccess.String())
-		if oldAge.After(*sessionData.lastAccess) {
-			pods.DestroyContainer(session)
-			invalidSessions = append(invalidSessions, sessionData.sessionID)
-			// Delete Proxy entry to avoid 502s
-			delete(proxies, session)
-
-		}
-
-	}
-
-}
-
-func IdleSessionCleanup() error {
-	err := initSessionAging()
-	if err != nil {
-		println("Could not initialize Session aging")
-		return err
-	}
-	for {
-		deleteIdleSessions()
-		time.Sleep(time.Duration(viper.GetInt("session_timeout")) * time.Second)
-	}
-}