I have a php web application and on one of the route I try to execute node script.
Node script location: C:\Users\meusr\Workspace\www\myproject\directImport.js
I have configured my package.json, such that npm start executes above script.
php (laravel) application's executable index.php located at: C:\Users\meusr\Workspace\www\myPHPproject\public\
And on one of my route: importer/run
I have:
$commandToRun = "npm start --prefix ". env('IMPORTER_PATH'). " /dev/null 2>&1";
Where IMPORTER_PATH is configured in my env, as: IMPORTER_PATH = C:\Users\meusr\Workspace\www\myproject\
when I try to execute the command with exec
exec($commandToRun, $output);
Page keeps on loading no output, no error and no end.
The script has no issue and running the same command on command line on windows system works:
npm start --prefix C:\Users\meusr\Workspace\www\myproject\
outputs as expected.
I thought it was issue with permission first (which should have thrown error, but I still tried and ran another command)
exec('npm -v', $output);
which outputs my npm version.
Similarly I tried to use simply node directImport.js which didn't work either.
Then tried to change directory to the location where node file is located and ran the command again.
exec(cd C:\Users\meusr\Workspace\www\myproject\ && dir /dev/null 2>&1) // this works, but:
exec(cd C:\Users\meusr\Workspace\www\myproject\ && node directImport.js /dev/null 2>&1) // this didn't work
Thanks to miken32, what worked for me was:
<?php
$commandString = 'start /b c:\\programToRun.exe -attachment "c:\\temp\file1.txt"';
pclose(popen($commandString, 'r'));
?>
http://php.net/manual/en/function.popen.php#92413
Related
On my server (Ubuntu 14.04.4 LTS), I have a Firefox installed, as well as xvfb for headless Firefox operation, and CasperJS with SlimerJS. I also have a CasperJS script which works fine. I want to utilize this script from PHP; this is the essence of my PHP script for this, let's call it mytest.php:
echo "php_sapi_name() " . php_sapi_name() . "\n"; // "cli" for php cli, "apache2handler" for php via webserver
chdir(dirname(__FILE__));
$nodeModPath = "/home/USERNAME/.nvm/versions/node/v4.0.0/lib/node_modules";
putenv("SLIMERJSLAUNCHER=/usr/bin/firefox46");
$cmdline = "xvfb-run $nodeModPath/casperjs/bin/casperjs --engine=slimerjs --debug=true mySlimerScript.js";
$returnString = shell_exec($cmdline);
echo "$returnString\n";
EDIT: Note that the command could as well be just:
$cmdline = "xvfb-run $nodeModPath/casperjs/bin/casperjs --engine=slimerjs --debug=true 2>&1";
... that is, without any JS script listed - in which case the help should be dumped (and is, in case of CLI access - but the same error as below is reported when accessing through webserver)
When I run this PHP script from the terminal command line (via SSH), that is through PHP in CLI mode:
$ php mytest.php
... everything runs fine, there is no problem whatsoever.
However, when I invoke this PHP script online through the webserver, that is via http://example.com/mytest.php, it fails first with the error:
Gecko error: it seems /usr/bin/firefox46 is not compatible with SlimerJS.
See Gecko version compatibility. If version is correct, launch slimerjs
with --debug=true to see Firefox error message
... and after adding --debug=true (as already included in the example above), I additionally get this error:
JavaScript error: resource://gre/modules/FileUtils.jsm, line 63: NS_ERROR_FAILURE: Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsIProperties.get]
So, apparently my headless Firefox does not want to run, when PHP is invoked through the webserver (in which case, PHP reports that it uses the apache2handler SAPI).
Would anyone know why this happens - and how can I get the script to execute properly when called from a webserver, just as when it runs under PHP CLI mode?
EDIT 2: Can now reconstruct this error via CLI mode too, and can confirm it is due to the user; so without any JS script provided in the $command, I get this:
$ sudo -H -u root php mytest.php
...
Usage: casperjs [options] script.[js|coffee] [script argument [script argument ...]]
casperjs [options] test [test path [test path ...]]
casperjs [options] selftest
...
$ sudo -H -u www-data php mytest.php
JavaScript error: resource://gre/modules/FileUtils.jsm, line 63: NS_ERROR_FAILURE: Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsIProperties.get]
Gecko error: it seems /usr/bin/firefox46 is not compatible with SlimerJS.
See Gecko version compatibility. If version is correct, launch slimerjs
with --debug=true to see Firefox error message
Well, this was a nasty problem. I ended up doing an strace, and comparing the logs, for the root user and the www-data user when running a full slimerjs (the full command line can be found by adding echoes to /path/to/slimerjs-0.10.1-pre/slimerjs):
sudo -H -u www-data strace \
/usr/bin/firefox46 -app /path/to/slimerjs-0.10.1-pre/application.ini \
--profile /path/to/firefox-46.0.1/profile-46 -no-remote --debug=true /home/USERNAME/.nvm/versions/node/v4.0.0/lib/node_modules/casperjs/bin/bootstrap.js --casper-path=/home/USERNAME/.nvm/versions/node/v4.0.0/lib/node_modules/casperjs \
--cli 2>&1 \
| tee /tmp/strace.log
sudo -H -u root strace \
/usr/bin/firefox46 -app /path/to/slimerjs-0.10.1-pre/application.ini \
--profile /path/to/firefox-46.0.1/profile-46 -no-remote --debug=true /home/USERNAME/.nvm/versions/node/v4.0.0/lib/node_modules/casperjs/bin/bootstrap.js --casper-path=/home/USERNAME/.nvm/versions/node/v4.0.0/lib/node_modules/casperjs \
--cli 2>&1 \
| tee /tmp/straceR.log
If these logs are now compared in say meld, then the eventually start diverging at a point like this:
mkdir("/root/.innophi", 0700) = 0
mkdir("/root/.innophi/slimerjs", 0700) = 0
... [vs.] ...
mkdir("/var/www/.innophi", 0700) = -1 EACCES (Permission denied)
access("/var/www/.innophi", F_OK) = -1 ENOENT (No such file or directory)
So, casperJS basically tries to create a directory in the home directory of the user; the problem is , www-data's $HOME is /var/www, where it seemingly has no write access!
So, the easiest thing for me was to "hack" the $HOME environment variable in the mytest.php script, and set it to /tmp, where www-data definitely has write permissions:
...
putenv("SLIMERJSLAUNCHER=/usr/bin/firefox46");
putenv("HOME=/tmp");
...
... and whaddayaknow, finally the script works under the www-data user from CLI too:
$ sudo -H -u www-data php test_commands.php
...
Options:
--verbose Prints log messages to the console
--log-level Sets logging level
--help Prints this help
...
Btw, this .innophi directory seems to also be mentioned in https://docs.slimerjs.org/current/configuration.html#profiles ,
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 have a series of shell commands I want to put in a program and execute the program from the command line. I decided to use PHP for this so currently I am trying to get the most basic shell commands to run.
Save as build.php
<?php
shell_exec('cd ..');
echo "php executed\n";
?>
From the command-line
php build.php
Output
php executed
Php executes correctly but I'm still in the same directory. How do I get shell_exec( ... ) to successfully call a shell command?
You need to change the cwd (current working directory) in PHP... any cd command you execute via exec() and its sister functions will affect ONLY the shell that the exec() call invokes, and anything you do in the shell.
<?php
$olddir = getcwd();
chdir('/path/to/new/dir'); //change to new dir
exec('somecommand');
will execute somecommand in /path/to/new/dir. If you do
<?php
exec('cd /path/to/new/dir');
exec('somecommand');
somecommand will be executed in whatever directory you started the PHP script from - the cd you exec'd just one line ago will have ceased to exist and is essentially a null operation.
Note that if you did something like:
<?php
exec('cd /path/to/new/dir ; somecommand');
then your command WOULD be executed in that directory... but again, once that shell exits, the directory change ceases to exist.
I'm using exec to run a background script like this :
$command = "/usr/local/bin/php public_html/r/index.php tools $action process $params > /dev/null &";
exec($command);
The thing is : it's NOT working.
Hints :
When I'm executing the very same command from the terminal (via SSH) it's working fine.
The exec command is enabled (I can execute any command without issue).
Any ideas?
background jobs tend to have different 'current' directories than your shell - usually it's the home directory of the account that the job is running under. Unless your public_html is in /home/whoever, you're not actually running your script. Try an absolute path:
$command = "/usr/local/bin/php /path/to/public_html/r/index.php etc..."
^^^^^^^^^
instead.
I am trying to Execute a multiple commands in php using exec() and shell_exec but i am getting a null value back which i shouldn't and nothing is happening (if i copy and paste the strings below in the command line it will work fine and accomplish the job needed) this is the commands i am using:
$command = "cd /../Desktop/FolderName;";
$command .= 'export PATH=$PATH:`pwd`;';
$command .= 'Here i execute a compiler;';
and then i use the escapeshellcmd()
$escaped_command = escapeshellcmd($command);
then
shell_exec($escaped_command);
any ideas what i am doing wrong and i also tried escapeshellarg() instead of escapeshellcmd()?
Solution: the Problem was the permission of the execution compiler for other owners is non and this was the problem.
because when you are using exec() function in php the owner of the file will be www-data so you need to give permission for the www-data either from the ACL of ubuntu or whatever linux based operating system(you can know the owner by doing this exec('whoami')), or by the files you need to execute.
(Sorry my bad English)
On Linux you can add your Commands in a Shell Script.
You can put this in any file:
#!/bin/bash
cd /../Desktop/FolderName
export PATH=$PATH:`pwd`
EXECUTE COMPILER
And save this as fille.sh
Then, add execution permissions:
chmod +x path/to/file.sh
From PHP, you can call this Script executing:
shell_exec('sh path/to/file.sh');
Hope this helps!