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15 years ago
Setting up public key authentication:



1.  Login to the unix server you want to connect using putty.

2.  mkdir .ssh (there is a dot before ssh)

3.  cd .ssh

4.  ssh-keygen -t rsa mykey

5.  Enter passphrase as test

6.  ls -al -> you will find two files mykey , mykey.pub

7.  cat mykey.pub >>authorized_keys

8.  cat mykey

9.  Copy what you get on screen to notepad and save it as "c:\mykey" (within quotes)

10.  cat mykey.pub

11.  Copy what you get on screen to notepad and save it as "c:\mykey.pub" (within quotes)



<?php



function my_ssh_disconnect($reason, $message, $language) 

{

  printf("Server disconnected with reason code [%d] and message: %s\n", $reason, $message);

}



//Open a connection forcing 3des-cbc when sending packets, any strength aes cipher when receiving packets, no compression in either direction, and Group1 key exchange. 

$methods = array(

  'kex' => 'diffie-hellman-group1-sha1',

  'client_to_server' => array(

   'crypt' => 'aes256-cbc',

   'comp' => 'none',

   'mac' => 'hmac-sha1'),

  'server_to_client' => array(

   'crypt' => 'aes256-cbc',

   'comp' => 'none',

   'mac' => 'hmac-sha1'));



$callbacks = array('disconnect' => 'my_ssh_disconnect');



      // Function to run a command on the unix server



      function run_cmd($ssh_host, $user_name, $keyfilename, $ssh_command)

      {

          $connection = ssh2_connect($ssh_host, 22, $methods, $callbacks);

          if (!$connection) die('Connection failed');

          if (ssh2_auth_pubkey_file($connection, $user_name, $keyfilename.".pub", $keyfilename, 'test'))

          {

            echo "Public Key Authentication Successful as user: $user_name";

          }

          else

          {

            die('Public Key Authentication Failed');

          }



          $stream = ssh2_exec($connection, $ssh_command);

          $i=0;

          stream_set_blocking($stream, true);

          $line = stream_get_line($stream, 1024, "\n");

          while (!feof($stream))                                                                               

          {

                  echo $line.' ';

                  $line = stream_get_line($stream, 1024, "\n");

                  $i++;

          }  

          echo "Count : ".$i;

          flush();

          unset($stream);  

      }



      function my_ssh_disconnect($reason, $message, $language)

      {

            printf("Server disconnected with reason code [%d] and message: %s\n",

            $reason, $message);

      }



      // Main Code



      $user_name = "USERID";

      $keydir = "c:\\";

      $search_string = 'needle';

      $keyfilename= $keydir.'mykey';

      $ssh_host = "foo.bar.com";

      $ssh_command = 'grep "'.$search_string.'" /haystack/*.log';

      run_cmd($ssh_host, $user_name, $keyfilename, $ssh_command);



      $ssh_command = 'ls -al';

      run_cmd($ssh_host, $user_name, $keyfilename, $ssh_command);

?>
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