I'm trying to list running services on a windows server via php. Therefore I'm using shell_exec with winexe.
My script:
$cmd = "winexe --interactive=0 --user='***' --password='***' //192.168.***.** \"net start\"";
$output = shell_exec($cmd);
echo $output;
Unfortunately on execution the page loads forever with no result. The command works on the command-line (Debian).
Anyone an idea?
Thanks in advance.
Save $cmd with correct format into a new bash file. Set cmd value for call this file. Remember set execution perms to this file.
Check if your apache user has perms for exec winexe
===
Try to launch
cat </dev/null | winexe --interactive=0 --ostype=1 --user=...
Related
Just migrated a website from a linux server without a cpanel to a server with a cpanel. My problem is when I hit start to start a process which executes a php file. It will not run the file. If I run the file from terminal everything works.
The code that calls the file.
if ($do === "start_service") {
create_marker_file("$service_running_marker");
system_bg("php $dir/$service_script");
$message = "Started Service!";
$running = true;
$status = "Running";
}
The systembg is a function.
function system_bg($command) {
exec('bash -c "exec nohup setsid ' . $command . ' > /dev/null 2>&1 &"');
}
If i do ps ax | grep service.php in terminal is see this
/opt/cpanel/ea-php70/root/usr/bin/php-cgi /home/xsocial1/public_html/xsmp/service.php
When I run the file in terminal this is what i see when I run ps ax | grep service.php
/opt/cpanel/ea-php70/root/usr/bin/php service.php
I think my problem is I need the server to call a cli call and not a cgi call
This is correct, you will need to figure out the CLI PHP path and use that to start the process. This is sadly not exactly standardised, but on a *nix machine you will usually have the right one by using PHP_BINDIR .'/php' (PHP_BINDIR being a PHP constant).
You may try to check the webserver user has a privilegies to run the bash.
I have a bash script that takes a parameter is called in PHP by shell_exec(script.sh parameter). Basically, my goal is to call a script that is owned by another user that is not apache.
The script.sh script is a file that contains the following (right now there are some error handling commands):
#/bin/bash
whoami>>whoami
echo $1 >> parameter
while read f; do
env>>envoutput
sudo -i -u archivescriptowner /path/to/archivescript.sh -command archive >> output
done < $1
In my /etc/sudoers file , I have the following:
apache ALL=(archivescriptowner) NOPASSWD: /bin/bash -c /path/to/archivescript.sh *
When I run this script as by running su -s /bin/bash apache and pass a parameter, it works.
When I run it via my button in php, archivescript.sh does not execute
The whoami file has apache written to it
The parameter file has the right file written to it
env shows the following
Term=xterm
LD_LIBRARY_PATH=/path/to/library
PATH=/sbin/:usr/sbin:/bin:/usr/bin
PWD=/var/www/html
LANG=C
SHLVL=4
=/bin/env
PWD is outputting right, that is where my script is right now, it will be moved in the future.
The output file when it is ran by the button click is blank.
I am at a loss as to why this is not working. Any insight would be helpful. Please let me know if I need to give any additional information.
I recently published a project that allows PHP to obtain and interact with a real Bash shell. Get it here: https://github.com/merlinthemagic/MTS
After downloading you would simply use the following code:
$shell = \MTS\Factories::getDevices()->getLocalHost()->getShell('bash', true);
$return1 = $shell->exeCmd('/path/to/archivescript.sh');
echo $return1; //return from your script
I'm in trouble and that much confused about a php shell_exec command.
When the command is execute by PHP I have no error but the execution fails. If I use exactly the same command from a terminal it works.
Here's the command :
/usr/bin/wkhtmltopdf --lowquality --dpi 300 --encoding utf-8 "/tmp/knplabs_snappyxa9otq.html" "/tmp/knplabs_snappyv3pD7h.pdf"
When I lauch this from a terminal :
$ /usr/bin/wkhtmltopdf --lowquality --dpi 300 --encoding utf-8 "/tmp/knplabs_snappyWG9XTd.html" "/tmp/knplabs_snappyv3pD7h.pdf"
Loading page (1/2)
Printing pages (2/2)
Done
But from my php script :
// Construct the previous command
$command = $this->buildCommand($url, $path);
../..
shell_exec($command);
../..
$content = file_get_contents($path);
../..
I've test the output of shell_exec, it's empty.
The log :
Warning: file_get_contents(/tmp/knplabs_snappyv3pD7h.pdf): failed to open stream: No such file or directory in /*****/lib/snappy/SnappyMedia.class.php on line 64
No permission pb in the /tmp directory :
$ ls -la /tmp
total 448
drwxrwxrwt 16 root root 4096 mars 12 21:51 .
../..
I've tried avec the PHP exec() function to get error informations, I just get an "1" error code in return_var and nothing in output.
For information this issue appear on my test server, my desktop computer but not on my notebook. All the 3 are with sames PHP, Apache, Mysql versions.
I don't understand anything ...
Thanks for any help, I'm loosing my mind.
David.
I've found the solution here : Executing wkhtmltopdf from PHP fails
Thanks to Krzychu.
First to get information from the shell_exec command add " 2>&1" at the end of the command. In that way you will get information in return of the command :
$no_output = shell_exec($command);
echo $no_output; // nothing
$output = shell_exec($command . ' 2>&1');
echo $output; // in my case : "cannot connect to X server"
The solution :
Not use the wkhtmltopdf ubuntu package (0.9.9-4)
Use the official package from the Wkhtmltopdf download page
So no need to install xvfb ! (I've seen this advice many times)
Looks like a user's permissions issue.
When you run the command from the terminal, it is the user account, currently used, which does have the right permissions, to run a command in /usr/bin, and execute the specific file.
When you run it from the php script, it is the http server account on your system, which needs the permission to execute the file in /usr/bin. Usually this is the apache user.
How you should setup permissions depends on your system. Just remember that what is allowed for apache, is allowed for anyone accessing your http server.
I have had this problem for ages and adding . ' 2>&1' after the $command has somehow solved the problem.
this:
$output = shell_exec($command . ' 2>&1');
instead of:
$output = shell_exec($command);
No idea why but it works and I'm grateful.
Is it a shared hosting? It seems like shell_exec is a restricted function. Try running error_reporting(E_ALL); ini_set('display_errors', 1); before calling shell_exec.
I stumbled upon the same Problem, in my case an absolut Path in the exec Command like /var/www did not work, I had to use relative Paths from the point where I executed the php File.
I also wanted to notice, that it did not work using shell_exec, however it worked using normal exec command, not sure wheres the difference here.
I am using this code on Ubuntu 13.04,
$cmd = "sleep 20 &> /dev/null &";
exec($cmd, $output);
Although it actually sits there for 20 seconds and waits :/ usually it works fine when using & to send a process to the background, but on this machine php just won't do it :/
What could be causing this??
Try
<?PHP
$cmd = '/bin/sleep';
$args = array('20');
$pid=pcntl_fork();
if($pid==0)
{
posix_setsid();
pcntl_exec($cmd,$args,$_ENV);
// child becomes the standalone detached process
}
echo "DONE\n";
I tested it for it works.
Here you first fork the php process and then exceute your task.
Or if the pcntl module is not availabil use:
<?PHP
$cmd = "sleep 20 &> /dev/null &";
exec('/bin/bash -c "' . addslashes($cmd) . '"');
The REASON this doesn't work is that exec() executes the string you're passing into it. Since & is interpreted by the shell as "execute in the background", but you don't execute a shell in your exec call, the & is just passed along with 20 to the /bin/sleep executable - which probably just ignores that.
The same applies to the redirection of output, since that is also parsed by the shell, not in exec.
So, you either need to find a way to fork your process (as described above), or a way to run the subprocess as a shell.
My workaround to do this on ubuntu 13.04 with Apache2 and any version of PHP:
libssh2-php, I just used nohup $cmd & inside a local SSH session using PHP and it ran it just fine the background, of course this requires putting certain security protocols in place, such as enabling SSH access for the webserver user, so it would have exec-like permissions then only allowing localhost to login to the webserver ssh account.
I have a PHP script that runs a .bat file on my windows machine using
$result = system("cmd /C nameOfBatchFile.bat");
This sets some environmental variables and is used to call Amazon EC2 API from the command line.
How do I do the same from a Linux server? I have renamed my .bat file to a shell (.sh) and changed the script to use 'export' when setting env vars. I have tested by running the code from a putty terminal and it does what it should. So I know the commands in the script are good. How do I run this from PHP? I have tried running the same command as above with the new filename and I don't get any errors, or file not found etc but it doesn't appear to work.
Where do I start trying to solve this?
---------------------------------- UPDATE -------------------------------
Here is the PHP script that calls the shell file -
function startAmazonInstance() {
$IPaddress = "1.2.3.4"
$resultBatTemp = system("/cmd /C ec2/ec2_commands.sh");
$resultBat = (string)$resultBatTemp;
$instanceId = substr($resultBat, 9, 10);
$thefile = "ec2/allocate_address_template.txt";
// Open the text file with the text to make the new shell file file
$openedfileTemp = fopen($thefile, "r");
contents = fread($openedfileTemp, filesize($thefile));
$towrite = $contents . "ec2-associate-address -i " . $instanceId . " " . $IPaddress;
$thefileSave = "ec2/allocate_address.sh";
$openedfile = fopen($thefileSave, "w");
fwrite($openedfile, $towrite);
fclose($openedfile);
fclose($openedfileTemp);
system("cmd /C ec2/mediaplug_allocate_address_bytemark.sh");
}
And here is the .sh file - ec2_commands.sh
#!/bin/bash
export EC2_PRIVATE_KEY=$HOME/.ec2/privateKey.pem
export EC2_CERT=$HOME/.ec2/Certificate.pem
export EC2_HOME=$HOME/.ec2/ec2-api-tools-1.3-51254
export PATH=$PATH:$EC2_HOME/bin
export JAVA_HOME=$HOME/libs/java/jre1.6.0_20
ec2-run-instances -K $HOME/.ec2/privateKey.pem -C $HOME/.ec2/Certificate.pem ami-###### -f $HOME/.ec2/aws.properties
I have been able to run this file from the command line so I know that the commands work ok. When I had this working on windows there would be a delay as the instance started up and I could echo the results to the screen. Now there is no delay as if nothing is happening.
Put a hash-bang on the first line of your shell script.
#!/bin/bash
Then give it the executable flag.
$ chmod a+x yourshellscript
You can then call it from PHP with system.
$result = system("yourshellscript");
$result = system("/bin/sh /path/to/shellfile.sh");
Is script executable? If not, make it so:
$ chmod a+x script.sh # shell
system ("/path/to/script.sh"); // PHP
or launch it via interpreter:
system("sh /path/to/script.sh"); // PHP
Is interpreter specified in shell script (ie. #!/bin/sh line)?
have you tried shell_exec() ?