CODEWITHSUNDEEP
phpshell
Srikanth
Srikanth

Reputation: 63

Calling PHP Serverside script using shell

When I run client.sh script no output is coming. And when I use "system" command in php the client.sh script is running in infinite loop.

Server.sh: code:

#!/bin/bash

while : 
do
        printf "Do you want to continue:[Y/N]\n"
        read ans
        case $ans in
                "Y")continue;;
                "N")echo "Thank you"
                    exit 0;;
                "*")echo "Wrong choice"
                   continue;;
        esac
done

Output:

srikanth@localhost:~/www/phpshell$ ./scm.sh
Do you want to continue:[Y/N]
Y
Do you want to continue:[Y/N]
N
Thank you

Calls.php: Code:

<?php
$cmd="/home/srikanth/phptest/server.sh";
pcntl_exec($cmd);
?>

Output:

srikanth@localhost:~/phptest$ php calls.php 
Do you want to continue:[Y/N]
Y
Do you want to continue:[Y/N]
N
Thank you

Client.sh code:

#!/bin/bash
curl http://cxps103/svnadmin/calls.php

Output:

srikanth@localhost:~/phptest$ ./client.sh

Any suggestion would be of much help. Thank you.

Update:

As per Ibu's suggestion am simplifying my question, I had got the problem, there is a while loop in my server.sh script which causing a problem,

Upvotes: 0

Views: 419

Answers (1)

Gilles &#39;SO- stop being evil&#39;
Gilles &#39;SO- stop being evil&#39;

Reputation: 107759

When the CGI script (server.sh) runs, its standard input is not connected to anything. Therefore the read command always sets ans to an empty value, which doesn't match any of the alternatives in the case statement, and the script loops forever.

As wimvds and others have remarked, your approach is fundamentally wrong. A CGI script generates an HTML page to display in a browser. It acts based on a client request. Once the script has its arguments, it doesn't get input from anywhere (unless it opens files on the server). Interaction for a web application consists of the user entering data in a form and pressing a submit button. Unix interactions such as entering input on stdin and seeing output on stdout don't work over HTTP.

Aside: the "*") case would only match a line consisting of a single * character. You probably meant *), meaning to match anything.

Upvotes: 1

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