note 92314 deleted from function.ssh2-shell by danbrown

Note Submitter: ADZ adz at jewc dot org ---- Note: As you probably can see...this is a really really long tutorial. Not because it's a hard concept. But because I want to explain it in such detail that ANYBODY can get it. If you have a little bit of experience in php already, it's fine too. Look through the source code I showed below and if you don't understand a line, just look for it in my tutorial. I marked off 3 very important concepts with a bunch of *********s. Hope this helps a buncha people. It's my first time doing such an extensive tutorial. So gimmie your input :) I've had quite a bit of trouble getting ssh2 to work, mainly because I didn't understand the concepts behind a lot of the commands used. That's why when I tried the scripts given by different users below, the didn't work. I did a bit of research on each of the functions users used...and I've made an (almost) failsafe script. And most importantly I will explain what exactly is happening in the code, unlike a lot of users here, explain what every step does. Here's the code. The function you will use is readwrite. What it does is it connects through ssh using username/password authentication, sends a command and looks for a certain output. If it finds that output it returns true. Obviously you will want to do something different (ex: get ALL the output of a command, run multiple commands, etc). That's why I will explain exactly what is happening in every line. Trust me, if you don't understand a part of the script READ THE EXPLANATION!!!, you don't want to take any shortcuts here...otherwise you will get very unexpected results if your situation is a wee bit different from mine...... =============== FULL SCRIPT ============= <?php function readwrite ($write, $lookfor,$ip,$user,$pass) { flush(); //Write Whatever we have before //Connect and Authenticate $connection = ssh2_connect($ip) or die ("can't connect"); ssh2_auth_password($connection,$user,$pass) or die("can't auth"); //Start the Shell $shell = ssh2_shell($connection,"xterm"); //Here we are waiting for Shell to initialize usleep(200000); //increase this a bit if you get unexpected results $write = "echo '[start]'; {$write}; echo '[end]'"; $out = user_exec($shell, $write); fclose($shell); if(stristr($out, $lookfor)) { //it exists return true; } } function user_exec($shell,$cmd) { fwrite($shell,$cmd . PHP_EOL); //write to the shell $output = ""; //will store our output $start = false; //have we started yet $start_time = time(); //the time sarted $max_time = 10; //time in seconds while(((time()-$start_time) < $max_time)) { //if the x seconds haven't passed $line = fgets($shell); //get the next line of output if(!stristr($line,$cmd)) { //we don't want output that was out command (because it also contains [start] and [end] if(preg_match('/\[start\]/',$line)) { //if we see that [start] is in the line that means we started $start = true; //set start to true } elseif(preg_match('/\[end\]/',$line)) { //we're done return $output; //return what we have (last line) } elseif($start && isset($line) && $line != "") { $output = $line; //return only last line (.= for all lines) } } } } ?> ============ EXPLANATION ============= I couldn't fit it into the comment so I placed it into wikibooks. http://en.wikibooks.org/wiki/PHP_Programming/SSH_Class