为什么ssh2_exec的命令不会结束？ [英] Why commands with ssh2_exec do not end?

问题描述

我在使用ssh2_exec远程运行命令时遇到问题。

当我使用wget或unzip时，命令应该执行，一些文件。

我需要知道的是如何确保我的ssh2_exec脚本在继续执行剩下的PHP代码之前完全执行。

  $ stream = ssh2_exec（$ connection，'cd / home; wget http://domain.com/myfile.zip; unzip myfile。 zip; rm myfile.zip'）; 
  

提前感谢！

我找到脚本，如何获得命令的结果？

 <？php 
 $ ip ='ip_address'; 
 $ user ='username'; 
 $ pass ='password'; 
 
 $ connection = ssh2_connect（$ ip）; 
 ssh2_auth_password（$ connection，$ user，$ pass）; 
 $ shell = ssh2_shell（$ connection，bash）; 
 
 // Trick是在开始和结束echos可以在* nix和Windows系统中执行。 
 //如果在Windows系统上，请将cmd / C添加到$ cmd的开头。 
 $ cmd =echo'[start]';您的命令在这里; echo'[end]'; 
 $ output = user_exec（$ shell，$ cmd）; 
 
 fclose（$ shell）; 
 
 function user_exec（$ shell，$ cmd）{
 fwrite（$ shell，$ cmd。\\\
）; 
 $ output =; 
 $ start = false; 
 $ start_time = time（）; 
 $ max_time = 2; // time in seconds 
 while（（（time（） -  $ start_time）< $ max_time））{
 $ line = fgets（$ shell）; 
 if（！strstr（$ line，$ cmd））{
 if（preg_match（'/ \ [start\] /'，$ line））{
 $ start = true ; 
} elseif（preg_match（'/ \ [end \] /'，$ line））{
 return $ output; 
} elseif（$ start）{
 $ output [] = $ line; 
} 
} 
} 
} 
 
？> Debian可能会认为软件包是好的，因为它是非常好的软件包，因为它是一个非常好的软件包。稳定（根据官方网站，自2012-10-15以来没有更改）。但我会说这不好。我将使用以下方法：
  $ command =ls -l 
 $ user =user; 
 $ host =host; 
 
 if（！my_ssh_exec（$ command，$ user，$ host））{
 fprintf（STDERR，my_ssh_exec failed\\\
）; 
} 
 
 
函数my_ssh_exec（$ cmd，$ host，$ user）{
 $ result = true; 
 
 $ desc = [
 1 => ['pipe'，'w']，
 2 => ['pipe'，'w']，
]; 
 
 // -tt强制TTY分配
 $ ssh_cmd =ssh -tt $ user @ $ host  -  $ cmd; 
 
 $ proc = proc_open（$ cmd，$ desc，$ pipes）; 
 
 if（！is_resource（$ proc））{
 return false; 
} 
 
 if（$ error = stream_get_contents（$ pipes [2]））{
 fprintf（STDERR，Error：％s\\\
，$ error）; 
 $ result = false; 
} 
 fclose（$ pipes [2]）; 
 
 if（$ output = stream_get_contents（$ pipes [1]））{
 printf（Output：％s\\\
，$ output）; 
} 
 fclose（$ pipes [1]）; 
 
 if（$ exit_status = proc_close（$ proc））{
 fprintf（STDERR，命令以非零状态退出％d：％s\\\
，
 $ exit_status，$ cmd）; 
 $ result = false; 
} 
 
 return $ result; 
} 
  
脚本应该在命令行界面中运行。
 
I have a problem running a command on my server remotely with ssh2_exec.

When I use wget or unzip, the command should execute but I get no result or only a few files.

What I need to know is how I can be sure that my ssh2_exec script will execute fully before proceeding to the rest of my PHP code.
$stream =ssh2_exec($connection, 'cd /home; wget http://domain.com/myfile.zip; unzip myfile.zip; rm myfile.zip');
Thanks in advance!

EDIT : I have found script, how get result of commands ?
<?php 
$ip = 'ip_address'; 
$user = 'username'; 
$pass = 'password'; 

$connection = ssh2_connect($ip); 
ssh2_auth_password($connection,$user,$pass); 
$shell = ssh2_shell($connection,"bash"); 

//Trick is in the start and end echos which can be executed in both *nix and windows systems. 
//Do add 'cmd /C' to the start of $cmd if on a windows system. 
$cmd = "echo '[start]';your commands here;echo '[end]'"; 
$output = user_exec($shell,$cmd); 

fclose($shell); 

function user_exec($shell,$cmd) { 
  fwrite($shell,$cmd . "\n"); 
  $output = ""; 
  $start = false; 
  $start_time = time(); 
  $max_time = 2; //time in seconds 
  while(((time()-$start_time) < $max_time)) { 
    $line = fgets($shell); 
    if(!strstr($line,$cmd)) { 
      if(preg_match('/\[start\]/',$line)) { 
        $start = true; 
      }elseif(preg_match('/\[end\]/',$line)) { 
        return $output; 
      }elseif($start){ 
        $output[] = $line; 
      } 
    } 
  } 
} 

?>

解决方案
Debian might think the package is good, because it's very stable(according to the official site there were no changes since 2012-10-15). But I'll say it's not good. I'd use the following approach:
$command = "ls -l";
$user = "user";
$host = "host";

if (! my_ssh_exec($command, $user, $host)) {
  fprintf(STDERR, "my_ssh_exec failed\n");
}


function my_ssh_exec($cmd, $host, $user) {
  $result = true;

  $desc = [
    1 => ['pipe', 'w'],
    2 => ['pipe', 'w'],
  ];

  // -tt forces TTY allocation
  $ssh_cmd = "ssh -tt $user@$host -- $cmd";

  $proc = proc_open($cmd, $desc, $pipes);

  if (! is_resource($proc)) {
    return false;
  }

  if ($error = stream_get_contents($pipes[2])) {
    fprintf(STDERR, "Error: %s\n", $error);
    $result = false;
  }
  fclose($pipes[2]);

  if ($output = stream_get_contents($pipes[1])) {
    printf("Output: %s\n", $output);
  }
  fclose($pipes[1]);

  if ($exit_status = proc_close($proc)) {
    fprintf(STDERR, "Command exited with non-zero status %d: %s\n",
      $exit_status, $cmd);
    $result = false;
  }

  return $result;
}
The script is supposed to run in command line interface.

                        
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