用於調用sh腳本中的函數的netcat守護進程

我是shell編程的新手，我創建了一個腳本來打開與我的服務器的連接。我想讓這個腳本監聽客戶端節點的輸入並使用它來運行一個函數。用於調用sh腳本中的函數的netcat守護進程

這是我的過程。運行腳本>打開監聽器>在第二臺計算機使用netcat來連接>名爲nodefunction

服務器我已經SERVER_PORT編碼爲「4444」

文件名上的腳本運行的函數：run_hangman

nc -l -k -v -p 4444 | bash hangman

文件名：劊子手

#!/bin/bash 

msg_timeout=0 
host_ows=1 
server_port=4444 
dubOws=xxx.xxx.xxx.xxx 

initServer() { 
    hostIP=`ip -o addr show dev "eth0" | awk '$3 == "inet" {print $4}' | sed -r 's!/.*!!; s!.*\.!!'` 
    hostOws=`echo $hostIP | cut -d . -f 4` 
} 
servermsg(){ #message //if = --n, echos on same line 
    if [ "$1" != "--n" ] 
    then 
     echo `date +"%T"` "[SERVER] "$1 
    else 
     echo -n `date +"%T"` "[SERVER] " 
    fi 
} 
owsmsg(){ #message //if = --n, echos on same line 
    if [ "$1" != "--n" ] 
    then 
     echo `date +"%T"` "[OWS] "$1 
    else 
     echo -n `date +"%T"` "[OWS] " 
    fi 
} 
playermsg() { 
    if [ "$1" != "--n" ] 
    then 
     echo `date +"%T"` "[PLAYER] "$1 
    else 
     echo -n `date +"%T"` "[PLAYER] " 
    fi 
} 
question(){ #question, read, example 
    servermsg "$1" 
    if [ -n "$3" ] 
    then 
     servermsg "$3" 
    fi 
    read $2 
    echo "" 
} 
owsArray(){ # 
    for targetOws in $player_list 
    do 
     owsArray+=("OWS"$targetOws) 
    done 
    echo -n ${owsArray[*]} 
    echo 
} 
openSocket() { 
    servermsg "Starting the Game Listener" 
    servermsg "Opening Listener on port "$server_port 
    #nc -k -l $server_port |bash  
    #nc -kl -q 1 -p $server_port # This should create the listener & This is where everything stops. 
    servermsg "Now listening on port "$server_port 
} 

initServer 
owsmsg "Starting server on OWS"$hostOws"..." 

question "Enter all the OWSs that will play:" player_list "Example: 1 9 14 23" 
echo $player_list 
question "Type a category hint:" game_cat "Example: Type of Animal" 
question "Type your word:" game_word "Example: zebra" 
question "How many guesses:" game_guesses "Example: 7" 

servermsg "OWS"$host_ows "has created a Hangman session" 
servermsg "Players are:"; servermsg --n; owsArray 
servermsg "Your word is "${#game_word}" letters long and players have "$game_guesses" guesses" 
question "If this is all correct press enter, or CTRL+C to cancel" 

openSocket 

# I think I need a While script here to read the RAW input and run the playermsg function with the input?

我運行run_hangman文件，然後我通過我的節點計算機連接到它。我輸入以下行並回顯「1 2 3」，因爲這是我所需要的。我也不能在運行「run_hangman」的窗口中直接輸入「1 2 3」，就好像我按Enter鍵進入一個新行。

echo "1 2 3" >/dev/tcp/xxx.xxx.xxx.xxx/4444

服務器表明，它連接

Listening on [0.0.0.0] (family 0, port 4444) 
14:52:24 [OWS] Starting server on OWS225... 
14:52:24 [SERVER] Enter all the OWSs that will play: 
14:52:24 [SERVER] Example: 1 9 14 23 
Connection from [xxx.xxx.xxx.xxx] port 4444 [tcp/*] accepted (family 2, sport 41564) 
Connection closed, listening again. 

1 2 3

現在，一旦它到達openSocket就會讓我送多一個回聲，然後將其關閉的服務器上。我需要得到我認爲是一段時間的聲明，並讓它監聽像「playermsg」已經開始遊戲一樣的輸入，並讓它真正在服務器上運行該功能。

我將能夠得到這個運行，幾乎好像它必須在後臺？我一直在使用nc(1)作爲參考，有些網站說要嘗試-d，那也不管用。

來源

2016-04-27 MatthewEnderle

我明白了。我的確需要一段時間的陳述。

openSocket 
while read -r value; do 
    val=${value:10} 
    if [[ "$value" == playermsg* ]]; then 
     val=${value:10} 
     playermsg $val 
    elif [[ "$value" == servermsg* ]]; then 
     val=${value:10} 
     servermsg $val 
    else 
     echo "Returned "$value 
     echo "Value was "$val 
    fi 
done

所以，現在的第二臺計算機上我只需運行

echo "playermsg testing" >/dev/tcp/xxx.xxx.xxx.xxx/4444

然後服務器顯示以下內容：

15:29:36 [SERVER] Starting the Game Listener 
15:29:36 [SERVER] Opening Listener on port 4440 
15:29:36 [SERVER] Now listening on port 4440 
15:29:37 [PLAYER] testing

來源

2016-04-27 19:36:24 MatthewEnderle

用於調用sh腳本中的函數的netcat守護進程

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