more cleanup

chatserver-telnet.go

@@ -37,11 +37,14 @@ func handleTelnetConn(bufConn bufferedConn) {
 			fmt.Fprintf(os.Stdout, "Ending socket\n")
 
 			if nil != u {
-				delTcpChat <- *u
+				cleanTelnet <- *u
 			}
 			break
 		}
-		buf := buffer[:count]
+		msg := string(buffer[:count])
+		if "" == strings.TrimSpace(msg) {
+			continue
+		}
 
 		// Rate Limit: Reasonable poor man's DoS prevention (Part 1)
 		// A human does not send messages super fast and blocking the
@@ -63,7 +66,7 @@ func handleTelnetConn(bufConn bufferedConn) {
 				//fmt.Fprintf(os.Stdout, "buf{%s}\n", buf[:count])
 
 				// TODO use safer email testing
-				email = strings.TrimSpace(string(buf[:count]))
+				email = strings.TrimSpace(msg)
 				emailParts := strings.Split(email, "@")
 				if 2 != len(emailParts) {
 					fmt.Fprintf(bufConn, "Email: ")
@@ -120,7 +123,7 @@ func handleTelnetConn(bufConn bufferedConn) {
 				continue
 			}
 
-			if code != strings.TrimSpace(string(buf[:count])) {
+			if code != strings.TrimSpace(msg) {
 				fmt.Fprintf(bufConn, "Incorrect Code\nAuth Code: ")
 			} else {
 				authn = true
@@ -132,7 +135,7 @@ func handleTelnetConn(bufConn bufferedConn) {
 					userCount: make(chan int, 1),
 					newMsg:    make(chan string, 10), // reasonably sized
 				}
-				authTcpChat <- *u
+				authTelnet <- *u
 				// prevent data race on len(myRawConns)
 				// XXX (there can't be a race between these two lines, right?)
 				count := <-u.userCount
@@ -170,7 +173,7 @@ func handleTelnetConn(bufConn bufferedConn) {
 		broadcastMsg <- myMsg{
 			ReceivedAt: time.Now(),
 			sender:     bufConn,
-			Message:    string(buf[0:count]),
+			Message:    strings.TrimRight(msg, "\r\n"),
 			Channel:    "general",
 			User:       email,
 		}
@@ -191,9 +194,9 @@ func handleTelnetBroadcast(u *tcpUser) {
 		// https://blog.cloudflare.com/the-complete-guide-to-golang-net-http-timeouts/
 		timeoutDuration := 2 * time.Second
 		u.bufConn.SetWriteDeadline(time.Now().Add(timeoutDuration))
-		_, err := fmt.Fprintf(u.bufConn, msg)
+		_, err := fmt.Fprintf(u.bufConn, msg+"\r\n")
 		if nil != err {
-			delTcpChat <- *u
+			cleanTelnet <- *u
 			break
 		}
 	}

chatserver.go

@@ -96,8 +96,8 @@ var broadcastMsg chan myMsg
 
 var virginConns chan net.Conn
 var wantsServerHello chan bufferedConn
-var authTcpChat chan tcpUser
+var authTelnet chan tcpUser
-var delTcpChat chan tcpUser
+var cleanTelnet chan tcpUser
 var gotClientHello chan bufferedConn
 
 // Http
@@ -272,8 +272,6 @@ func sendAuthCode(cnf ConfMailer, to string) (string, error) {
 	}
 	if resp.StatusCode < 200 || resp.StatusCode >= 300 || "{" != string(body[0]) {
 		fmt.Fprintf(os.Stdout, "[Mailgun] Uh-oh...\n[Maigun] Baby Brent says: %s\n", body)
-	} else {
-		fmt.Fprintf(os.Stdout, "[Mailgun] Status: %d", resp.StatusCode)
 	}
 
 	return code, nil
@@ -322,7 +320,7 @@ func main() {
 	// TCP & Authentication
 	myRawConns := make(map[bufferedConn]tcpUser)
 	wantsServerHello = make(chan bufferedConn, 128)
-	authTcpChat = make(chan tcpUser, 128)
+	authTelnet = make(chan tcpUser, 128)
 
 	// HTTP & Authentication
 	myAuthReqs := make(map[string]authReq)
@@ -409,7 +407,7 @@ func main() {
 		case conn := <-virginConns:
 			// This is short lived
 			go handleConnection(conn)
-		case u := <-authTcpChat:
+		case u := <-authTelnet:
 			// allow to receive messages
 			// (and be counted among the users)
 			myRawConns[u.bufConn] = u
@@ -442,7 +440,7 @@ func main() {
 			delete(myAuthReqs, ar.Cid)
 		case bufConn := <-wantsServerHello:
 			go handleTelnetConn(bufConn)
-		case u := <-delTcpChat:
+		case u := <-cleanTelnet:
 			// we can safely ignore this error, if any
 			close(u.newMsg)
 			u.bufConn.Close()
@@ -476,7 +474,7 @@ func main() {
 			// I wonder if we could use IP detection to get the client's tz
 			// ... could probably make time for this in the authentication loop
 			zone, _ := msg.ReceivedAt.Zone()
-			fmt.Fprintf(os.Stdout, tf+" [%s] (%s):\n\t%s",
+			fmt.Fprintf(os.Stdout, tf+" [%s] (%s): %s\r\n",
 				t.Year(), t.Month(), t.Day(),
 				t.Hour(), t.Minute(), t.Second(), zone,
 				sender,
@@ -500,7 +498,7 @@ func main() {
 					// In the case that it's experiencing network issues,
 					// well, these things happen when you're having network issues.
 					// It can reconnect.
-					delTcpChat <- u
+					cleanTelnet <- u
 				}
 
 				/*
@@ -515,7 +513,7 @@ func main() {
 						conn.SetWriteDeadline(time.Now().Add(timeoutDuration))
 						_, err := fmt.Fprintf(conn, msg)
 						if nil != err {
-							delTcpChat <- u
+							cleanTelnet <- u
 						}
 					}(conn)
 				*/