Linux命令使用SharpSSH库时无法从.NET执行 [英] Linux Command Doesn't work from .NET execution when using SharpSSH library

问题描述

我试图在Linux中通过.NET运行一个非常简单的命令使用SharpSsh .NET库。代码不会抛出任何异常，它仍然不工作。当我从终端运行 sudo php /www/data/{directory}/scripts/create_file.php 命令时，它会创建该文件。当我从终端运行 sudo php /www/data/{directory}/scripts/delete_file.php 命令时，它会删除该文件。当从.NET调用此代码时，我没有看到正在创建/删除的文件。

查看此设置的答案：

< a href =http://stackoverflow.com/questions/9587821/sharpssh-net-library-unable-to-connect-to-linux-debian-from-net> SharpSSH .NET库：无法连接到Linux（ Debian）.NET

create_file.php：

 <？php 
 $ handle = fopen（'test.txt'，'w'）; 
 fwrite（$ handle，'Test Contents'）; 
 fclose（$ handle）; 
  

delete_file.php：

 <？php 
 if（file_exists（'test.txt'））
 unlink（'test.txt'）; 
  

.NET代码：

 使用System; 
 using System.Collections.Generic; 
 using System.Linq; 
 using System.Text; 
使用Tamir.SharpSsh; 
 
命名空间测试
 {
 public class Unix 
 {
 public static void CreateFile（）
 {
 SshExec ssh = new SshExec（Constants.LINUX_HOST，Constants.LINUX_USER，Constants.LINUX_PASSWORD）; 
 ssh.Connect（）; 
 String result = ssh.RunCommand（sudo php+ Constants.PHP_SCRIPTS_DIR +create_file.php）; 
} 
 
 public static void DeleteFile（）
 {
 SshExec ssh = new SshExec（Constants.LINUX_HOST，Constants.LINUX_USER，Constants.LINUX_PASSWORD）; 
 ssh.Connect（）; 
 String result = ssh.RunCommand（sudo php+ Constants.PHP_SCRIPTS_DIR +delete_file.php）; 
} 
} 
} 
  

解决方案>

我假设这些玩具的php文件是一个较小的情况下。

如果你需要实际创建和删除一个文件，不要使用php

如果您想要关闭密码提示，请使用 / etc / sudoers 文件 - 请参阅NOPASSWD此处。

PHP应不以root身份运行，尤其是在命令行中的变量。如果你有权限问题 - 解决他们！ PHP应该以具有最低权限的用户身份运行。

如果您需要一个维护帐户来访问ssh，并且不想让php用户拥有额外的功能，使其成为与php用户共享组的另一个用户 - 您可以使用组权限。 （您可能需要调整文件创建的默认权限。）

I'm trying to run a very simple command in Linux via .NET using the SharpSsh .NET library. The code doesn't throw any exceptions, and it's still not working. When I run the sudo php /www/data/{directory}/scripts/create_file.php command from the terminal it creates the file. And when I run the sudo php /www/data/{directory}/scripts/delete_file.php command from the terminal, it deletes the file. When calling this code from .NET, I don't see the file being created/deleted.

See this answer for setup:
SharpSSH .NET Library: unable to connect to Linux (Debian) from .NET

create_file.php:

<?php
$handle = fopen( 'test.txt', 'w' );
fwrite( $handle, 'Test Contents' );
fclose( $handle );

delete_file.php:

<?php
if( file_exists( 'test.txt' ) )
        unlink( 'test.txt' );

.NET code:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Tamir.SharpSsh;

namespace Testing
{
    public class Unix
    {
        public static void CreateFile()
        {
            SshExec ssh = new SshExec(Constants.LINUX_HOST, Constants.LINUX_USER, Constants.LINUX_PASSWORD);
            ssh.Connect();
            String result = ssh.RunCommand("sudo php " + Constants.PHP_SCRIPTS_DIR + "create_file.php");
        }

        public static void DeleteFile()
        {
            SshExec ssh = new SshExec(Constants.LINUX_HOST, Constants.LINUX_USER, Constants.LINUX_PASSWORD);
            ssh.Connect();
            String result = ssh.RunCommand("sudo php " + Constants.PHP_SCRIPTS_DIR + "delete_file.php");
        }
    }
}

解决方案

I assume that these toy php files are a reduced case of something larger.

If you need to actually create and delete a file, don't use php - you can just use a shell command directly.

If you want ot turn off the password prompt, there's syntax in the /etc/sudoers file for that - see "NOPASSWD" here.

PHP should not be run as root, especially with variables in the command line like that. If you're having permissions issues -- solve them! PHP should be run as a user with least privilege.

If you need a 'maintenance' account to ssh in and don't want to make the php user have extra capability, make it another user that shares a group with the php user - and you can use group permissions. (You may need to fiddle with the default permissions on file create.)

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