├── .gitignore ├── Icon.png ├── screenshot ├── ask_rule.png └── network_stats.png ├── resources ├── hicolor_apps_scalable_org.gnome.Terminal.png └── hicolor_apps_scalable_org.gnome.Terminal.svg ├── server.go ├── ui_tab_general.go ├── ui_tab_events.go ├── go.mod ├── table.go ├── config.go ├── main.go ├── README.md ├── desktop_parser.go ├── ui.go ├── statik └── statik.go ├── go.sum └── LICENSE /.gitignore: -------------------------------------------------------------------------------- 1 | fyne-opensnitch 2 | -------------------------------------------------------------------------------- /Icon.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/lucor/fyne-opensnitch/HEAD/Icon.png -------------------------------------------------------------------------------- /screenshot/ask_rule.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/lucor/fyne-opensnitch/HEAD/screenshot/ask_rule.png -------------------------------------------------------------------------------- /screenshot/network_stats.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/lucor/fyne-opensnitch/HEAD/screenshot/network_stats.png -------------------------------------------------------------------------------- /resources/hicolor_apps_scalable_org.gnome.Terminal.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/lucor/fyne-opensnitch/HEAD/resources/hicolor_apps_scalable_org.gnome.Terminal.png -------------------------------------------------------------------------------- /server.go: -------------------------------------------------------------------------------- 1 | // This file defines the OpenSnitch UI Server as per gRPC proto specification 2 | package main 3 | 4 | import ( 5 | "context" 6 | 7 | "github.com/evilsocket/opensnitch/daemon/ui/protocol" 8 | "google.golang.org/grpc" 9 | ) 10 | 11 | // Server represents an OpenSnitch UI Server 12 | type osServer struct { 13 | server *grpc.Server 14 | osApp *osApp 15 | } 16 | 17 | // Ping reply to an OpenSnitch daemon client ping request and send to statChan the 18 | // data received. 19 | func (s *osServer) Ping(ctx context.Context, pr *protocol.PingRequest) (*protocol.PingReply, error) { 20 | statChan <- pr.GetStats() 21 | return &protocol.PingReply{Id: pr.GetId()}, nil 22 | } 23 | 24 | // AskRule ask to the UI application for a Rule for the specified connection 25 | func (s *osServer) AskRule(ctx context.Context, conn *protocol.Connection) (*protocol.Rule, error) { 26 | r, _ := s.osApp.AskRule(conn) 27 | return r, nil 28 | } 29 | -------------------------------------------------------------------------------- /ui_tab_general.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "fmt" 5 | "time" 6 | 7 | "fyne.io/fyne" 8 | "github.com/evilsocket/opensnitch/daemon/ui/protocol" 9 | ) 10 | 11 | var generalStatsDefaultValues = [][]string{[]string{"-", "waiting for connection", "0", "0", "0", "0"}} 12 | 13 | func makeGeneralTab() fyne.Widget { 14 | headers := []string{"Version", "Daemon Status", "Uptime", "Rules", "Connections", "Dropped"} 15 | tbl := newTableWithHeaders(1, len(headers)) 16 | tbl.SetHeaders(headers) 17 | tbl.SetData(generalStatsDefaultValues) 18 | return tbl 19 | } 20 | 21 | func generalTabData(stats *protocol.Statistics) [][]string { 22 | status := "running" 23 | if stats.GetUptime() == 0 { 24 | status = "waiting for connection" 25 | } 26 | uptime := time.Duration(int(stats.GetUptime())) * time.Second 27 | 28 | return [][]string{ 29 | { 30 | stats.GetDaemonVersion(), 31 | status, 32 | uptime.String(), 33 | fmt.Sprintf("%d", stats.GetRules()), 34 | fmt.Sprintf("%d", stats.GetConnections()), 35 | fmt.Sprintf("%d", stats.GetDropped()), 36 | }, 37 | } 38 | } 39 | -------------------------------------------------------------------------------- /ui_tab_events.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "sort" 5 | 6 | "fyne.io/fyne" 7 | "github.com/evilsocket/opensnitch/daemon/ui/protocol" 8 | ) 9 | 10 | const eventsTabRows = 20 11 | 12 | func makeEventsTab() fyne.Widget { 13 | headers := []string{"Time", "Action", "Process", "Destination", "Protocol", "Rule"} 14 | tbl := newTableWithHeaders(eventsTabRows, len(headers)) 15 | tbl.SetHeaders(headers) 16 | return tbl 17 | } 18 | 19 | func eventsTabData(stats *protocol.Statistics) [][]string { 20 | events := stats.GetEvents() 21 | l := len(events) 22 | rows := eventsTabRows 23 | if l < eventsTabRows { 24 | rows = l 25 | } 26 | 27 | sort.Slice(events, func(i, j int) bool { 28 | return events[i].GetTime() > events[j].GetTime() 29 | }) 30 | 31 | var data [][]string 32 | for i := 0; i < rows; i++ { 33 | data = append(data, []string{ 34 | events[i].GetTime(), 35 | events[i].GetRule().GetAction(), 36 | events[i].GetConnection().GetProcessPath(), 37 | events[i].GetConnection().GetDstHost(), 38 | events[i].GetConnection().GetProtocol(), 39 | events[i].GetRule().GetName(), 40 | }) 41 | } 42 | return data 43 | } 44 | -------------------------------------------------------------------------------- /go.mod: -------------------------------------------------------------------------------- 1 | module github.com/lucor/fyne-opensnitch 2 | 3 | go 1.12 4 | 5 | require ( 6 | fyne.io/fyne v1.2.4 7 | github.com/davecgh/go-spew v1.1.1 // indirect 8 | github.com/evilsocket/ftrace v1.2.0 // indirect 9 | github.com/evilsocket/opensnitch v0.0.0-20190302122427-5c8f7102c29c 10 | github.com/fsnotify/fsnotify v1.4.9 // indirect 11 | github.com/go-gl/glfw v0.0.0-20190409004039-e6da0acd62b1 // indirect 12 | github.com/golang/protobuf v1.3.1 // indirect 13 | github.com/google/gopacket v1.1.16 // indirect 14 | github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e // indirect 15 | github.com/rakyll/statik v0.1.6 16 | github.com/srwiley/rasterx v0.0.0-20200120212402-85cb7272f5e9 // indirect 17 | github.com/stretchr/testify v1.5.1 // indirect 18 | golang.org/x/image v0.0.0-20200119044424-58c23975cae1 // indirect 19 | golang.org/x/net v0.0.0-20200324143707-d3edc9973b7e // indirect 20 | golang.org/x/sys v0.0.0-20200327173247-9dae0f8f5775 // indirect 21 | golang.org/x/text v0.3.2 // indirect 22 | google.golang.org/grpc v1.20.1 23 | gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f // indirect 24 | gopkg.in/yaml.v2 v2.2.8 // indirect 25 | ) 26 | -------------------------------------------------------------------------------- /table.go: -------------------------------------------------------------------------------- 1 | // This file defines a simple table widget for Fyne 2 | package main 3 | 4 | import ( 5 | "fmt" 6 | 7 | "fyne.io/fyne" 8 | "fyne.io/fyne/layout" 9 | "fyne.io/fyne/widget" 10 | ) 11 | 12 | // table represents a simple table widget for Fyne 13 | type table struct { 14 | *widget.Box 15 | table *fyne.Container 16 | rows int 17 | cols int 18 | } 19 | 20 | func (t *table) SetHeaders(headers []string) error { 21 | if len(headers) != t.cols { 22 | return fmt.Errorf("Expected headers to be %d, got %d", len(headers), t.cols) 23 | } 24 | labels := t.table.Objects[0:len(headers)] 25 | for i, label := range labels { 26 | label.(*widget.Label).SetText(headers[i]) 27 | } 28 | widget.Refresh(t) 29 | return nil 30 | } 31 | 32 | // SetContent refreshes the table content 33 | func (t *table) SetData(data [][]string) error { 34 | var values []string 35 | for _, row := range data { 36 | values = append(values, row...) 37 | } 38 | 39 | if len(values) != (t.cols * t.rows) { 40 | return fmt.Errorf( 41 | "Expected table to be %d elements. %d x %d (rows x cols), got %d", 42 | (t.cols * t.rows), len(values), t.rows, t.cols, 43 | ) 44 | } 45 | 46 | for i, label := range t.table.Objects { 47 | if i < t.cols { 48 | continue 49 | } 50 | label.(*widget.Label).SetText(values[i-t.cols]) 51 | } 52 | widget.Refresh(t) 53 | return nil 54 | } 55 | 56 | // newTable returns a table of rows x cols plus an header row 57 | func newTableWithHeaders(rows int, cols int) *table { 58 | 59 | tbl := fyne.NewContainerWithLayout(layout.NewGridLayout(cols)) 60 | 61 | for c := 0; c < cols; c++ { 62 | tbl.AddObject( 63 | widget.NewLabelWithStyle("", fyne.TextAlignLeading, fyne.TextStyle{Bold: true}), 64 | ) 65 | } 66 | 67 | for r := 0; r < rows; r++ { 68 | for c := 0; c < cols; c++ { 69 | tbl.AddObject( 70 | widget.NewLabel(""), 71 | ) 72 | } 73 | } 74 | 75 | return &table{ 76 | Box: widget.NewVBox(tbl), 77 | table: tbl, 78 | rows: rows, 79 | cols: cols, 80 | } 81 | } 82 | -------------------------------------------------------------------------------- /config.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "encoding/json" 5 | "fmt" 6 | "os" 7 | "path" 8 | "strings" 9 | 10 | "github.com/evilsocket/opensnitch/daemon/rule" 11 | ) 12 | 13 | var defaultConfig = &uiConfig{ 14 | DefaultTimeout: 15, 15 | DefaultAction: rule.Allow, 16 | DefaultDuration: rule.Restart, 17 | DefaultOperator: rule.OpProcessPath, 18 | } 19 | 20 | type uiConfig struct { 21 | DefaultTimeout uint `json:"default_timeout"` 22 | DefaultAction rule.Action `json:"default_action"` 23 | DefaultDuration rule.Duration `json:"default_duration"` 24 | DefaultOperator rule.Operand `json:"default_operand"` 25 | } 26 | 27 | func loadConfigFromFile(configFile string) (*uiConfig, error) { 28 | if strings.HasPrefix(configFile, "~") { 29 | home, err := os.UserHomeDir() 30 | if err != nil { 31 | return nil, fmt.Errorf("Could not get the current user's home directory: %v", err) 32 | } 33 | configFile = strings.Replace(configFile, "~", home, 1) 34 | } 35 | _, err := os.Stat(configFile) 36 | if os.IsNotExist(err) { 37 | return createDefaultConfigFile(configFile) 38 | } 39 | 40 | cfg := &uiConfig{} 41 | f, err := os.Open(configFile) 42 | if err != nil { 43 | return nil, fmt.Errorf("Could not open the config file %q. Error: %v", configFile, err) 44 | } 45 | defer f.Close() 46 | 47 | err = json.NewDecoder(f).Decode(cfg) 48 | if err != nil { 49 | return nil, fmt.Errorf("Could not read the config file %q. Error: %v", configFile, err) 50 | } 51 | 52 | return cfg, nil 53 | } 54 | 55 | func createDefaultConfigFile(configFile string) (*uiConfig, error) { 56 | dir := path.Dir(configFile) 57 | err := os.MkdirAll(dir, 0755) 58 | if err != nil { 59 | return nil, fmt.Errorf("Could not create the config folder %q. Error: %v", dir, err) 60 | } 61 | 62 | f, err := os.Create(configFile) 63 | if err != nil { 64 | return nil, fmt.Errorf("Could not create the config file %q. Error: %v", configFile, err) 65 | } 66 | defer f.Close() 67 | 68 | err = json.NewEncoder(f).Encode(defaultConfig) 69 | if err != nil { 70 | return nil, fmt.Errorf("Could not write the config file %q. Error: %v", configFile, err) 71 | } 72 | 73 | return defaultConfig, nil 74 | } 75 | -------------------------------------------------------------------------------- /main.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "flag" 5 | "net" 6 | "os" 7 | "os/signal" 8 | "syscall" 9 | 10 | "github.com/evilsocket/opensnitch/daemon/log" 11 | "github.com/evilsocket/opensnitch/daemon/ui/protocol" 12 | "google.golang.org/grpc" 13 | ) 14 | 15 | const ( 16 | uiSocket = "/tmp/osui.sock" 17 | ) 18 | 19 | var ( 20 | sigChan chan os.Signal 21 | statChan chan *protocol.Statistics 22 | server *grpc.Server 23 | ) 24 | 25 | // flag variables 26 | var ( 27 | configFile string 28 | debug = false 29 | ) 30 | 31 | func main() { 32 | 33 | flag.StringVar(&configFile, "config", "~/.opensnitch/ui-config.json", "UI configuration file") 34 | flag.BoolVar(&debug, "debug", debug, "Enable debug logs.") 35 | flag.Parse() 36 | 37 | if debug { 38 | log.MinLevel = log.DEBUG 39 | } else { 40 | log.MinLevel = log.INFO 41 | } 42 | 43 | sigChan = make(chan os.Signal, 1) 44 | signal.Notify(sigChan, 45 | syscall.SIGHUP, 46 | syscall.SIGINT, 47 | syscall.SIGTERM, 48 | syscall.SIGQUIT) 49 | 50 | cfg, err := loadConfigFromFile(configFile) 51 | if err != nil { 52 | log.Error("Error loading configuration file %s. %v", configFile, err) 53 | } 54 | 55 | statChan = make(chan *protocol.Statistics) 56 | osApp := newApp(sigChan, cfg) 57 | 58 | go func() { 59 | //Starts the gRPC server 60 | lis, err := net.Listen("unix", uiSocket) 61 | if err != nil { 62 | log.Error("OpenSnitch gRPC server failed to listen on socket unix://%s: %v", uiSocket, err) 63 | } 64 | 65 | server = grpc.NewServer() 66 | protocol.RegisterUIServer( 67 | server, 68 | &osServer{ 69 | osApp: osApp, 70 | }, 71 | ) 72 | 73 | log.Info("OpenSnitch gRPC server listening on socket: unix://%s", uiSocket) 74 | if err := server.Serve(lis); err != nil { 75 | log.Fatal("failed to serve: %v", err) 76 | } 77 | }() 78 | 79 | go func() { 80 | for { 81 | select { 82 | case st := <-statChan: 83 | osApp.RefreshStats(st) 84 | case sig := <-sigChan: 85 | log.Raw("\n") 86 | log.Important("Got signal: %v", sig) 87 | log.Info("Shutting down grpc server...") 88 | server.Stop() 89 | log.Info("All done, bye") 90 | os.Exit(0) 91 | } 92 | } 93 | }() 94 | 95 | osApp.ShowAndRun() 96 | } 97 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Fyne OpenSnitch 2 | 3 |
4 | Fyne OpenSnitch 5 |
6 | 7 | An [OpenSnitch](https://github.com/evilsocket/opensnitch) UI in Go using [Fyne](https://fyne.io) 8 | 9 | The application is running as a gRPC server on a unix socket and will interact with OpenSnitch daemon. 10 | 11 | **THIS SOFTWARE IS WORK IN PROGRESS, DO NOT EXPECT IT TO BE BUG FREE AND DO NOT RELY ON IT FOR ANY TYPE OF SECURITY.** 12 | 13 | ## Requirements 14 | 15 | - OpenSnitch [daemon](https://github.com/evilsocket/opensnitch#daemon) >= v1.0.0b 16 | - Fyne [dependencies](https://github.com/fyne-io/fyne#prerequisites) to compile the application 17 | 18 | #### UI Configuration 19 | 20 | By default the UI will load its configuration from `~/.opensnitch/ui-config.json` (customizable with the `--config` argument), the default contents of this file are: 21 | 22 | ```json 23 | { 24 | "default_timeout": 15, 25 | "default_action": "allow", 26 | "default_duration": "until restart", 27 | "default_operand":"process.path" 28 | } 29 | ``` 30 | 31 | The `default_timeout` is the number of seconds after which the UI will take its 32 | default action, the `default_action` can be `allow` or `deny` and the 33 | `default_duration`, which indicates for how long the default action should be 34 | taken, can be `once`, `until restart` or `always` to persist the action as a new 35 | rule on disk. `default_operand` indicates the operand type to use for 36 | the rule, can be `process.path` (the path of the executable), `user.id`, 37 | `dest.ip`, `dest.host` or `dest.port`. 38 | 39 | For more details about rules please refer to the [opensnitch readme](https://github.com/evilsocket/opensnitch/blob/master/README.md#rules). 40 | 41 | ## Running 42 | 43 | Ensure the OpenSnitch daemon is configured and running. 44 | 45 | go build -o fyne-opensnitch && ./fyne-opensnitch 46 | 47 | And you should see a main window containting the OpenSnitch Network Statistics like the following: 48 | 49 | ![OpenSnitch Network Statistics Screenshot](screenshot/network_stats.png) 50 | 51 | and every time an action is required to add a new rule: 52 | 53 | ![OpenSnitch Ask Rule Screenshot](screenshot/ask_rule.png) 54 | 55 | 56 | ## Credits 57 | 58 | - [Icon](https://github.com/evilsocket/opensnitch/blob/v1.3.0/ui/opensnitch/res/icon.png) is from OpenSnitch 59 | - [OpenSnitch](https://github.com/evilsocket/opensnitch) 60 | - [Fyne](https://github.com/fyne-io/fyne) 61 | - [Statik](https://github.com/rakyll/statik) for the static assets embedding 62 | - [GNOME Terminal](https://github.com/GNOME/gnome-terminal) for the [terminal icon](https://github.com/GNOME/gnome-terminal/blob/gnome-3-32/data/icons/hicolor_apps_scalable_org.gnome.Terminal.svg) -------------------------------------------------------------------------------- /desktop_parser.go: -------------------------------------------------------------------------------- 1 | // This file contains functions to extract process info like and name and icon 2 | // from Linux desktop files. 3 | // This is a porting of the Python OpenSnitch UI python desktop parser: 4 | // https://github.com/evilsocket/opensnitch/blob/ec6ecea/ui/opensnitch/desktop_parser.py 5 | 6 | package main 7 | 8 | import ( 9 | "bufio" 10 | "bytes" 11 | "io/ioutil" 12 | "os" 13 | "os/exec" 14 | "path/filepath" 15 | "regexp" 16 | "strings" 17 | 18 | _ "github.com/lucor/fyne-opensnitch/statik" 19 | 20 | "github.com/evilsocket/opensnitch/daemon/log" 21 | "github.com/rakyll/statik/fs" 22 | ) 23 | 24 | var desktopApps map[string]desktopApp 25 | var defaultIcon []byte 26 | 27 | type desktopApp struct { 28 | Name string 29 | Exec string 30 | Icon string 31 | } 32 | 33 | // init loads all desktopApp info and makes them available via the desktopApps map 34 | func init() { 35 | statikFS, err := fs.New() 36 | if err != nil { 37 | log.Fatal("Could not init the icon filesystem %v", err) 38 | } 39 | 40 | f, err := statikFS.Open("/hicolor_apps_scalable_org.gnome.Terminal.png") 41 | if err != nil { 42 | log.Fatal("Could not open the default icon file from VFS: %v", err) 43 | } 44 | defer f.Close() 45 | 46 | defaultIcon, err = ioutil.ReadAll(f) 47 | if err != nil { 48 | log.Fatal("Could not read the default icon content from VFS: %v", err) 49 | } 50 | 51 | // fixes contains some adjustement for the desktopApp mappings 52 | fixes := map[string]string{ 53 | "/opt/google/chrome/google-chrome": "/opt/google/chrome/chrome", 54 | "/usr/lib/firefox/firefox.sh": "/usr/lib/firefox/firefox", 55 | "/usr/bin/pidgin": "/usr/bin/pidgin.orig", 56 | } 57 | 58 | desktopApps = make(map[string]desktopApp) 59 | for _, dp := range desktopPaths() { 60 | desktopApp, err := parseDesktopFile(dp) 61 | if err != nil { 62 | log.Warning("Could not fetch icon for %q. Reason: %s", dp, err) 63 | continue 64 | } 65 | 66 | fix, ok := fixes[desktopApp.Exec] 67 | if ok { 68 | desktopApp.Exec = fix 69 | } 70 | 71 | desktopApps[desktopApp.Exec] = desktopApp 72 | } 73 | } 74 | 75 | // desktopPaths returns the paths containing desktop files 76 | func desktopPaths() []string { 77 | var desktopPaths []string 78 | val, ok := os.LookupEnv("XDG_DATA_DIRS") 79 | if !ok { 80 | val = "/usr/share" 81 | } 82 | for _, v := range strings.Split(val, ":") { 83 | pattern := filepath.Join(v, "applications", "*.desktop") 84 | founds, err := filepath.Glob(pattern) 85 | if founds == nil || err != nil { 86 | continue 87 | } 88 | desktopPaths = append(desktopPaths, founds...) 89 | } 90 | 91 | return desktopPaths 92 | } 93 | 94 | // parseDesktopFile returns a desktopApp from a .desktop file 95 | func parseDesktopFile(desktopFile string) (desktopApp, error) { 96 | var desktopEntrySection bool 97 | var da desktopApp 98 | 99 | b, err := ioutil.ReadFile(desktopFile) 100 | if err != nil { 101 | return da, err 102 | } 103 | 104 | scanner := bufio.NewScanner(bytes.NewReader(b)) 105 | for scanner.Scan() { 106 | line := scanner.Text() 107 | if strings.HasPrefix(line, "[") { 108 | desktopEntrySection = false 109 | if strings.Contains(line, "Desktop Entry") { 110 | desktopEntrySection = true 111 | } 112 | continue 113 | } 114 | if desktopEntrySection == false { 115 | continue 116 | } 117 | 118 | if strings.HasPrefix(line, "Name=") { 119 | da.Name = strings.TrimPrefix(line, "Name=") 120 | continue 121 | } 122 | 123 | if strings.HasPrefix(line, "Exec=") { 124 | execFile := strings.TrimPrefix(line, "Exec=") 125 | execFile = parseExec(execFile) 126 | execFile, err := resolvePath(execFile) 127 | if err != nil { 128 | return da, err 129 | } 130 | da.Exec = execFile 131 | } 132 | 133 | if strings.HasPrefix(line, "Icon=") { 134 | icon := strings.TrimPrefix(line, "Icon=") 135 | if icon == "" { 136 | continue 137 | } 138 | if filepath.IsAbs(icon) { 139 | da.Icon = icon 140 | continue 141 | } 142 | icon = filepath.Join("/usr/share/icons/hicolor/48x48/apps", icon) + ".png" 143 | icon, err = resolvePath(icon) 144 | if err != nil { 145 | continue 146 | } 147 | da.Icon = icon 148 | } 149 | } 150 | if err := scanner.Err(); err != nil { 151 | return da, err 152 | } 153 | return da, nil 154 | } 155 | 156 | // parseExec parse the Exec entry into the desktop file to return the executable 157 | func parseExec(execFile string) string { 158 | // remove stuff like %U 159 | reRemoveParams := regexp.MustCompile(`%[a-zA-Z]+`) 160 | //remove 'env .... command' 161 | reEnv := regexp.MustCompile(`^env\s+[^\s]+\s`) 162 | e := reRemoveParams.ReplaceAllString(execFile, "") 163 | e = reEnv.ReplaceAllString(e, "") 164 | // remove quotes 165 | strings.ReplaceAll(e, "'", "") 166 | 167 | e = strings.TrimSpace(e) 168 | parts := strings.Split(e, " ") 169 | 170 | execFile, err := exec.LookPath(parts[0]) 171 | if err != nil { 172 | return "" 173 | } 174 | return execFile 175 | } 176 | 177 | // resolvePath returns the absolute path resolving the symlink, if any 178 | func resolvePath(file string) (string, error) { 179 | file, err := filepath.EvalSymlinks(file) 180 | if err != nil { 181 | return file, err 182 | } 183 | 184 | if filepath.IsAbs(file) { 185 | return file, nil 186 | } 187 | 188 | return filepath.Abs(file) 189 | } 190 | -------------------------------------------------------------------------------- /ui.go: -------------------------------------------------------------------------------- 1 | // This file defines the Fyne application 2 | package main 3 | 4 | import ( 5 | "fmt" 6 | "image/color" 7 | "os" 8 | "regexp" 9 | "strconv" 10 | "syscall" 11 | "time" 12 | 13 | "fyne.io/fyne" 14 | "fyne.io/fyne/app" 15 | "fyne.io/fyne/canvas" 16 | "fyne.io/fyne/layout" 17 | "fyne.io/fyne/widget" 18 | 19 | "github.com/evilsocket/opensnitch/daemon/log" 20 | "github.com/evilsocket/opensnitch/daemon/rule" 21 | "github.com/evilsocket/opensnitch/daemon/ui/protocol" 22 | ) 23 | 24 | const osAppHealtCheck = 15 * time.Second 25 | const minHeight = 400 26 | const minWidth = 600 27 | 28 | // osApp represents the Fyne OpenSnitch application 29 | type osApp struct { 30 | fyneApp fyne.App 31 | mainWin fyne.Window 32 | chClose chan os.Signal 33 | defaultRule *protocol.Rule 34 | askTimeout time.Duration 35 | lastPing uint64 36 | } 37 | 38 | // ShowAndRun show and run the application 39 | func (a *osApp) ShowAndRun() { 40 | log.Info("starting Fyne OpenSnitch application") 41 | healtChecker := time.NewTicker(osAppHealtCheck) 42 | go func() { 43 | var last uint64 44 | var seen time.Time 45 | for range healtChecker.C { 46 | if a.lastPing > last { 47 | last = a.lastPing 48 | seen = time.Now() 49 | continue 50 | } 51 | 52 | lastSeenMsg := "" 53 | if last != 0 { 54 | lastSeenMsg = fmt.Sprintf( 55 | " Last ping received %s ago.", 56 | time.Since(seen).Truncate(time.Second), 57 | ) 58 | } 59 | log.Error("Daemon not available.%s", lastSeenMsg) 60 | a.RefreshStats(&protocol.Statistics{}) 61 | } 62 | }() 63 | a.mainWin.ShowAndRun() 64 | } 65 | 66 | func (a *osApp) RefreshStats(st *protocol.Statistics) { 67 | tabContainer := a.mainWin.Content().(*widget.TabContainer) 68 | selectedTab := tabContainer.CurrentTab() 69 | 70 | // Store last ping to report daemon availability 71 | a.lastPing = st.GetUptime() 72 | 73 | data := [][]string{} 74 | switch tabContainer.CurrentTabIndex() { 75 | case 0: 76 | data = generalTabData(st) 77 | table := selectedTab.Content.(*table) 78 | table.SetData(data) 79 | case 1: 80 | data = eventsTabData(st) 81 | scroll := selectedTab.Content.(*widget.ScrollContainer) 82 | table := scroll.Content.(*table) 83 | table.SetData(data) 84 | } 85 | 86 | } 87 | 88 | // Ask asks client a rule for the con connection 89 | func (a *osApp) AskRule(con *protocol.Connection) (*protocol.Rule, bool) { 90 | win := a.fyneApp.NewWindow("OpenSnitch") 91 | win.SetFixedSize(true) 92 | win.CenterOnScreen() 93 | 94 | processPath := con.GetProcessPath() 95 | appInfo, ok := desktopApps[processPath] 96 | if !ok { 97 | appInfo = desktopApp{ 98 | Name: processPath, 99 | } 100 | } 101 | 102 | processName := appInfo.Name 103 | proto := con.GetProtocol() 104 | destPort := con.GetDstPort() 105 | srcIP := con.GetSrcIp() 106 | destIP := con.GetDstIp() 107 | destHost := con.GetDstHost() 108 | uid := con.GetUserId() 109 | pid := con.GetProcessId() 110 | //processArgs := con.GetProcessArgs() 111 | 112 | var icon *canvas.Image 113 | if appInfo.Icon == "" { 114 | resource := fyne.NewStaticResource("default_icon", defaultIcon) 115 | icon = canvas.NewImageFromResource(resource) 116 | } else { 117 | icon = canvas.NewImageFromFile(appInfo.Icon) 118 | } 119 | icon.FillMode = canvas.ImageFillOriginal 120 | icon.SetMinSize(fyne.NewSize(48, 48)) 121 | 122 | // create a ruleCh where will wait an for user action or timeout 123 | ruleCh := make(chan *protocol.Rule, 1) 124 | 125 | // uiDefaultRule is the default rule to apply for the current process on 126 | // timeout or window close 127 | var uiDefaultRule *protocol.Rule 128 | var userRule *protocol.Rule 129 | 130 | type data struct { 131 | Action string 132 | Operand string 133 | OperandData string 134 | Duration string 135 | } 136 | 137 | d := data{} 138 | // Select widget for the action 139 | action := widget.NewSelect([]string{"Allow Connections", "Block connections"}, func(s string) { 140 | d.Action = string(rule.Allow) 141 | if s == "Block connections" { 142 | d.Action = string(rule.Deny) 143 | } 144 | }) 145 | if a.defaultRule.GetAction() == string(rule.Allow) { 146 | action.SetSelected("Allow Connections") 147 | } else { 148 | action.SetSelected("Block Connections") 149 | } 150 | 151 | // Map select with label with key 152 | operators := map[string]string{ 153 | "from this process": string(rule.OpProcessPath), 154 | fmt.Sprintf("from user %d", uid): string(rule.OpUserId), 155 | fmt.Sprintf("to port %d", destPort): string(rule.OpDstPort), 156 | fmt.Sprintf("to %s", destIP): string(rule.OpDstIP), 157 | fmt.Sprintf("to %s", destHost): string(rule.OpDstHost), 158 | } 159 | 160 | // Extract keys to pass to widget 161 | operatorOpts := []string{} 162 | for k := range operators { 163 | operatorOpts = append(operatorOpts, k) 164 | } 165 | 166 | // Select widget for the operator 167 | operator := widget.NewSelect(operatorOpts, func(s string) { 168 | op := operators[s] 169 | d.Operand = op 170 | switch op { 171 | case string(rule.OpProcessPath): 172 | d.OperandData = processPath 173 | case string(rule.OpUserId): 174 | d.OperandData = strconv.Itoa(int(uid)) 175 | case string(rule.OpDstPort): 176 | d.OperandData = strconv.Itoa(int(destPort)) 177 | case string(rule.OpDstIP): 178 | d.OperandData = destIP 179 | case string(rule.OpDstHost): 180 | d.OperandData = destHost 181 | } 182 | }) 183 | 184 | log.Info("get operand %s", a.defaultRule.Operator.GetOperand()) 185 | for k, v := range operators { 186 | if v == a.defaultRule.Operator.GetOperand() { 187 | operator.SetSelected(k) 188 | break 189 | } 190 | } 191 | 192 | // Select widget for the duration 193 | duration := widget.NewSelect([]string{"once", "for this session", "forever"}, func(s string) { 194 | switch s { 195 | case "once": 196 | d.Duration = string(rule.Once) 197 | case "for this session": 198 | d.Duration = string(rule.Restart) 199 | case "forever": 200 | d.Duration = string(rule.Always) 201 | } 202 | }) 203 | switch a.defaultRule.GetDuration() { 204 | case string(rule.Once): 205 | duration.SetSelected("once") 206 | case string(rule.Restart): 207 | duration.SetSelected("for this session") 208 | case string(rule.Always): 209 | duration.SetSelected("forever") 210 | } 211 | 212 | // Apply button 213 | applyBtn := widget.NewButton("Apply", func() { 214 | userRule = &protocol.Rule{ 215 | Action: d.Action, 216 | Duration: d.Duration, 217 | Operator: &protocol.Operator{ 218 | Type: string(rule.Simple), 219 | Operand: d.Operand, 220 | Data: d.OperandData, 221 | }, 222 | } 223 | win.Close() 224 | }) 225 | applyBtn.Style = widget.PrimaryButton 226 | 227 | win.SetContent( 228 | widget.NewVBox( 229 | widget.NewHBox( 230 | icon, 231 | widget.NewVBox( 232 | widget.NewLabelWithStyle(processName, fyne.TextAlignLeading, fyne.TextStyle{Bold: true}), 233 | widget.NewLabel(processPath), 234 | layout.NewSpacer(), 235 | ), 236 | layout.NewSpacer(), 237 | ), 238 | 239 | makeLine(), 240 | 241 | widget.NewLabel(fmt.Sprintf("%s is connecting to %s on %s port %d", processName, destHost, proto, destPort)), 242 | 243 | fyne.NewContainerWithLayout(layout.NewGridLayout(4), 244 | action, 245 | operator, 246 | duration, 247 | widget.NewVBox(applyBtn), 248 | ), 249 | 250 | makeLine(), 251 | 252 | fyne.NewContainerWithLayout(layout.NewGridLayout(3), 253 | widget.NewLabelWithStyle("Source IP", fyne.TextAlignLeading, fyne.TextStyle{Bold: true}), 254 | widget.NewLabel(srcIP), 255 | layout.NewSpacer(), 256 | 257 | widget.NewLabelWithStyle("Destination IP", fyne.TextAlignLeading, fyne.TextStyle{Bold: true}), 258 | widget.NewLabel(destIP), 259 | layout.NewSpacer(), 260 | 261 | widget.NewLabelWithStyle("Destination Port", fyne.TextAlignLeading, fyne.TextStyle{Bold: true}), 262 | widget.NewLabel(fmt.Sprintf("%d", destPort)), 263 | layout.NewSpacer(), 264 | 265 | widget.NewLabelWithStyle("Destination Host", fyne.TextAlignLeading, fyne.TextStyle{Bold: true}), 266 | widget.NewLabel(destHost), 267 | layout.NewSpacer(), 268 | 269 | widget.NewLabelWithStyle("User ID", fyne.TextAlignLeading, fyne.TextStyle{Bold: true}), 270 | widget.NewLabel(fmt.Sprintf("%d", uid)), 271 | layout.NewSpacer(), 272 | 273 | widget.NewLabelWithStyle("Process ID", fyne.TextAlignLeading, fyne.TextStyle{Bold: true}), 274 | widget.NewLabel(fmt.Sprintf("%d", pid)), 275 | layout.NewSpacer(), 276 | ), 277 | ), 278 | ) 279 | 280 | uiDefaultRule = &protocol.Rule{ 281 | Action: d.Action, 282 | Duration: d.Duration, 283 | Operator: &protocol.Operator{ 284 | Type: string(rule.Simple), 285 | Operand: d.Operand, 286 | Data: d.OperandData, 287 | }, 288 | } 289 | 290 | win.SetOnClosed(func() { 291 | if userRule != nil { 292 | ruleCh <- userRule 293 | return 294 | } 295 | ruleCh <- uiDefaultRule 296 | }) 297 | 298 | win.Show() 299 | 300 | var pr *protocol.Rule 301 | select { 302 | case r := <-ruleCh: 303 | pr = r 304 | case <-time.After(a.askTimeout): 305 | log.Info("Timeout reached. Applying default rule") 306 | pr = uiDefaultRule 307 | win.Close() 308 | } 309 | 310 | makeRuleName(pr) 311 | return pr, true 312 | } 313 | 314 | func makeRuleName(r *protocol.Rule) { 315 | reg, _ := regexp.Compile("[^a-zA-Z0-9]+") 316 | op := r.GetOperator() 317 | name := fmt.Sprintf("%s-%s-%s", r.GetAction(), op.GetType(), op.GetData()) 318 | r.Name = reg.ReplaceAllString(name, "-") 319 | } 320 | 321 | // newApp returns a new fyne opensnitch application 322 | func newApp(sigChan chan os.Signal, cfg *uiConfig) *osApp { 323 | 324 | fyneApp := app.New() 325 | 326 | mainWin := fyneApp.NewWindow("OpenSnitch Network Statistics") 327 | scEventTab := widget.NewScrollContainer( 328 | makeEventsTab(), 329 | ) 330 | 331 | content := widget.NewTabContainer( 332 | widget.NewTabItem("General", makeGeneralTab()), 333 | widget.NewTabItem("Events", scEventTab), 334 | ) 335 | 336 | mainWin.SetContent(content) 337 | 338 | initSize := fyne.Size{Width: mainWin.Content().MinSize().Width, Height: minHeight} 339 | 340 | scEventTab.Resize(initSize) 341 | mainWin.Resize(initSize) 342 | 343 | mainWin.SetOnClosed(func() { 344 | log.Important("Received close on main app") 345 | sigChan <- syscall.SIGQUIT 346 | fyneApp.Quit() 347 | }) 348 | 349 | return &osApp{ 350 | fyneApp: fyneApp, 351 | mainWin: mainWin, 352 | defaultRule: &protocol.Rule{ 353 | Name: "ui.default", 354 | Action: string(cfg.DefaultAction), 355 | Duration: string(cfg.DefaultDuration), 356 | Operator: &protocol.Operator{ 357 | Type: string(rule.Simple), 358 | Operand: string(cfg.DefaultOperator), 359 | }, 360 | }, 361 | askTimeout: time.Duration(cfg.DefaultTimeout) * time.Second, 362 | } 363 | } 364 | 365 | func makeLine() fyne.CanvasObject { 366 | rect := canvas.NewRectangle(&color.RGBA{128, 128, 128, 255}) 367 | rect.SetMinSize(fyne.NewSize(30, 2)) 368 | return rect 369 | } 370 | -------------------------------------------------------------------------------- /statik/statik.go: -------------------------------------------------------------------------------- 1 | // Code generated by statik. DO NOT EDIT. 2 | 3 | // Package statik contains static assets. 4 | package statik 5 | 6 | import ( 7 | "github.com/rakyll/statik/fs" 8 | ) 9 | 10 | func init() { 11 | data := "PK\x03\x04\x14\x00\x08\x00\x08\x00\xe9\x93\xacN\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00,\x00 \x00hicolor_apps_scalable_org.gnome.Terminal.pngUT\x05\x00\x01vf\xd8\\\x00\xa5\x04Z\xfb\x89PNG\x0d\n\x1a\n\x00\x00\x00\x0dIHDR\x00\x00\x000\x00\x00\x000\x08\x06\x00\x00\x00W\x02\xf9\x87\x00\x00\x00\x06bKGD\x00\xff\x00\xff\x00\xff\xa0\xbd\xa7\x93\x00\x00\x04ZIDATh\x81\xedYOh\x1cU\x1c\xfe\xde\x9b\xd9]1\xa7d\xe9\xa1\xadH\xd8\xd8\x90\x93\x07\xb5\"\x82\xa5\x876\x17[\xa8\x95\x98\x14+\xb6\x86H[\xff\x80 z\xe8\xa9\x8a\x81\x86z\xb7(%\x15ckmA1\x88\x9a\x1c\x7f\x7f`\x06\xd6+\x95\xbc*\xd0\xf0\xc8\x0bx\xf3\xad\xd7\xd0\xd1q\x7fK\x05&AE\xa1-`\x00\xa4\xdeZ\x85\x10\x189\xf1\"\xbe\x99\xbe\x86\xe7\x86\x0eA\xd79\x18Cj\x1f%\x14\xda\x82\x06|p\x02~<~ 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v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= 108 | gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f h1:BLraFXnmrev5lT+xlilqcH8XK9/i0At2xKjWk4p6zsU= 109 | gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= 110 | gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= 111 | gopkg.in/yaml.v2 v2.2.8 h1:obN1ZagJSUGI0Ek/LBmuj4SNLPfIny3KsKFopxRdj10= 112 | gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= 113 | honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= 114 | -------------------------------------------------------------------------------- /resources/hicolor_apps_scalable_org.gnome.Terminal.svg: -------------------------------------------------------------------------------- 1 | 2 | 15 | 33 | 34 | Adwaita Icon Template 36 | 38 | 40 | 44 | 48 | 49 | 51 | 55 | 59 | 60 | 62 | 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You may not convey a covered 525 | work if you are a party to an arrangement with a third party that is 526 | in the business of distributing software, under which you make payment 527 | to the third party based on the extent of your activity of conveying 528 | the work, and under which the third party grants, to any of the 529 | parties who would receive the covered work from you, a discriminatory 530 | patent license (a) in connection with copies of the covered work 531 | conveyed by you (or copies made from those copies), or (b) primarily 532 | for and in connection with specific products or compilations that 533 | contain the covered work, unless you entered into that arrangement, 534 | or that patent license was granted, prior to 28 March 2007. 535 | 536 | Nothing in this License shall be construed as excluding or limiting 537 | any implied license or other defenses to infringement that may 538 | otherwise be available to you under applicable patent law. 539 | 540 | 12. No Surrender of Others' Freedom. 541 | 542 | If conditions are imposed on you (whether by court order, agreement or 543 | otherwise) that contradict the conditions of this License, they do not 544 | excuse you from the conditions of this License. If you cannot convey a 545 | covered work so as to satisfy simultaneously your obligations under this 546 | License and any other pertinent obligations, then as a consequence you may 547 | not convey it at all. For example, if you agree to terms that obligate you 548 | to collect a royalty for further conveying from those to whom you convey 549 | the Program, the only way you could satisfy both those terms and this 550 | License would be to refrain entirely from conveying the Program. 551 | 552 | 13. Use with the GNU Affero General Public License. 553 | 554 | Notwithstanding any other provision of this License, you have 555 | permission to link or combine any covered work with a work licensed 556 | under version 3 of the GNU Affero General Public License into a single 557 | combined work, and to convey the resulting work. The terms of this 558 | License will continue to apply to the part which is the covered work, 559 | but the special requirements of the GNU Affero General Public License, 560 | section 13, concerning interaction through a network will apply to the 561 | combination as such. 562 | 563 | 14. Revised Versions of this License. 564 | 565 | The Free Software Foundation may publish revised and/or new versions of 566 | the GNU General Public License from time to time. Such new versions will 567 | be similar in spirit to the present version, but may differ in detail to 568 | address new problems or concerns. 569 | 570 | Each version is given a distinguishing version number. If the 571 | Program specifies that a certain numbered version of the GNU General 572 | Public License "or any later version" applies to it, you have the 573 | option of following the terms and conditions either of that numbered 574 | version or of any later version published by the Free Software 575 | Foundation. If the Program does not specify a version number of the 576 | GNU General Public License, you may choose any version ever published 577 | by the Free Software Foundation. 578 | 579 | If the Program specifies that a proxy can decide which future 580 | versions of the GNU General Public License can be used, that proxy's 581 | public statement of acceptance of a version permanently authorizes you 582 | to choose that version for the Program. 583 | 584 | Later license versions may give you additional or different 585 | permissions. However, no additional obligations are imposed on any 586 | author or copyright holder as a result of your choosing to follow a 587 | later version. 588 | 589 | 15. Disclaimer of Warranty. 590 | 591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY 592 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT 593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY 594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, 595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 596 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM 597 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF 598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 599 | 600 | 16. Limitation of Liability. 601 | 602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 610 | SUCH DAMAGES. 611 | 612 | 17. Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | --------------------------------------------------------------------------------