add gitignore, add first pass at info screen handler

.gitignore

@@ -0,0 +1,3 @@
+go-bbs
+getTubesPeers.bash
+

go.mod

@@ -1,4 +1,4 @@
-module versestudios.com/go-telnet-asyncio-test
+module versestudios.com/go-bbs
 
 go 1.16
 

main.go

@@ -19,7 +19,7 @@ import (
 	"github.com/creack/pty"
 	"github.com/xtaci/gaio"
 	"golang.org/x/term"
-	"versestudios.com/go-telnet-asyncio-test/openconn"
+	"versestudios.com/go-bbs/openconn"
 )
 
 type InChanKey string
@@ -104,7 +104,7 @@ func main() {
 		log.Printf("new context for client %v: %v\n", conn.RemoteAddr(), ctx)
 
 		// submit the first async write IO request
-		welcomeScreen, err := screenHandler("welcome")
+		welcomeScreen, err := screenHandler("welcome", nil)
 		if err != nil {
 			log.Printf("err loading initial welcome screen: %v\n", err)
 		}
@@ -185,7 +185,7 @@ func menuHandler(ctx context.Context, conn net.Conn, w *gaio.Watcher) {
 							switch string(strings.TrimSpace(string(res.Buffer[:res.Size-2]))) {
 
 							case "welcome":
-								welcomeStr, err := screenHandler("welcome")
+								welcomeStr, err := screenHandler("welcome", nil)
 								if err != nil {
 									log.Printf("err loading welcome screen: %v\n", err)
 								}
@@ -194,7 +194,7 @@ func menuHandler(ctx context.Context, conn net.Conn, w *gaio.Watcher) {
 								}
 
 							case "help":
-								helpStr, err := screenHandler("help")
+								helpStr, err := screenHandler("help", nil)
 								if err != nil {
 									log.Printf("err loading help screen: %v\n", err)
 								}
@@ -203,7 +203,7 @@ func menuHandler(ctx context.Context, conn net.Conn, w *gaio.Watcher) {
 								}
 
 							case "operator":
-								opStr, err := screenHandler("operator")
+								opStr, err := screenHandler("operator", nil)
 								if err != nil {
 									log.Printf("err loading operator screen: %v\n", err)
 								}
@@ -253,8 +253,23 @@ func menuHandler(ctx context.Context, conn net.Conn, w *gaio.Watcher) {
 									log.Printf("error writing to connection: %v", err)
 								}
 
+							case "info":
+								wg := new(sync.WaitGroup)
+								wg.Add(2)
+								uptime := getUptime(wg)
+								tubes := getTubePeers(wg)
+								wg.Wait()
+								data := struct{ Uptime, TubesInfo string }{uptime, tubes}
+								infoStr, err := screenHandler("info", data)
+								if err != nil {
+									log.Printf("err loading info screen: %v\n", err)
+								}
+								if err := w.Write(ctx, conn, infoStr); err != nil {
+									log.Printf("error sending screenHandler from cmd `info`: %v", err)
+								}
+
 							case "exit":
-								exitStr, err := screenHandler("exit")
+								exitStr, err := screenHandler("exit", nil)
 								if err != nil {
 									log.Printf("err loading exit screen: %v\n", err)
 								}
@@ -295,13 +310,13 @@ func menuHandler(ctx context.Context, conn net.Conn, w *gaio.Watcher) {
 	log.Println("terminating menucontrol for client")
 }
 
-func screenHandler(screenName string) (screen []byte, err error) {
+func screenHandler(screenName string, tplData interface{}) (screen []byte, err error) {
 	var screenBuf *bytes.Buffer
 	if tmpl, err := template.ParseFiles("screens/" + screenName + ".ans"); err != nil {
 		log.Printf("err loading welcome template: %v\n", err)
 	} else {
 		screenBuf = new(bytes.Buffer)
-		tmpl.Execute(screenBuf, nil)
+		tmpl.Execute(screenBuf, tplData)
 	}
 
 	return screenBuf.Bytes(), err
@@ -416,3 +431,23 @@ func doorHandler(ctx context.Context, c net.Conn, w *gaio.Watcher, menuwg *sync.
 	log.Println("leaving door handler")
 	return nil
 }
+
+// returns output of `uptime` as a string
+func getUptime(wg *sync.WaitGroup) string {
+	defer wg.Done()
+	out, err := exec.Command("uptime").Output()
+	if err != nil {
+		return string(err.Error()) // might as well pass on the love to my future co-workers for debugging assistance
+	}
+	return string(out)
+}
+
+func getTubePeers(wg *sync.WaitGroup) string {
+	defer wg.Done()
+	out, err := exec.Command("/usr/local/bin/getTubesPeers.bash").Output()
+	if err != nil {
+		log.Printf("err loading getTubePeers: %v\n", err)
+		return string(err.Error()) // again, might as well pass on the love to my future co-workers for debugging assistance
+	}
+	return string(out)
+}

screens/info.ans

@@ -0,0 +1,32 @@
+
+
+   _____            __                    ____      ____ 
+  / ___/__  _______/ /____  ____ ___     /  _/___  / __/___  
+  \__ \/ / / / ___/ __/ _ \/ __ '__ \    / // __ \/ /_/ __ \ 
+ ___/ / /_/ (__  ) /_/  __/ / / / / /  _/ // / / / __/ /_/ / 
+/____/\__, /____/\__/\___/_/ /_/ /_/  /___/_/ /_/_/  \____/  
+     /____/                                                 `
+    
+`
+ 
+Version: Saturday morning
+
+This bulletin board system is written in Go leveraging the gaio async i/o library.
+It is hosted on a  Raspberry Pi 4  running Ubuntu 20.04
+The web-based ANSI terminal is provided by  rtty  and  rttys
+ASCII art banners generated at  https://www.ascii-art-generator.org/
+ANSI escape codes from  https://gist.github.com/fnky/458719343aabd01cfb17a3a4f7296797
+
+Current system uptime is  {{ .Uptime }}
+
+This system is also hosting multiple Wireguard peer connections with other operators in
+an experimental distributed mesh overlay network we call  the Tubes
+
+Current peer tunnels
+
+iface   peer public key                                 bytes sent      bytes rec'd
+
+{{ .TubesInfo }}
+ 
+    
+>