I have been searching for an answer to this for a couple of hours with no clear answer.
I normally write .php scripts which do helpful administrative tasks on my website. I upload them to an ftp folder, and run them from my browser when I need them.
Unlike what I a used to, I am trying to run a script (someone else wrote it) to and have been told that I cannot do so from the browser and I need to do it from the command line. Basically everything is set up, but I cannot push to go button and run the script.
Any ideas? I have php installed on my local computer and can run scripts locally from browser and command line, but I do not know how to do the same for the scripts on my website.
I don't know if this helps, but my server is apache and runs off php version 5.3.3
Download Putty, from http://www.putty.org/
Run it
In "host" write your domain, and click on Open
When the black window open, it will ask you for your credentials:
Write your ssh credentials, if you have. If you dont, try with the ftp user and password.
If it doesn't work...get into your host control panel, and find out how to create an SFTP, or SSH user. If you can't find anything, contact support asking how to create that kind of user. When you have it
After you login, your are inside your server, and you can move around, as you would in linux. If you dont know the basics, find a good tutorial. Or just relay in:
ls : list the files and directories
pwd : know in what directory you are
cd DIRNAME : change to other directory inside de current one
cd .. : change to the parent directory
When you are in the directory where your script lives, just execute:
php yourscrip.php
if its a php script
php path_to_script.php
else
/path/to/script
If its the second option you will need to chmod +x /path/to/script first
These should all be run from a ssh session (or any other way of accessing a command line on the machine running the website)
to ssh to a sever use putty if on windows. Your host will be able to give extra details on how to access
Related
I'm codding a php script, using Instagram Private PHP Api.
It's work fine via SSH under "root" user, but when I try to run it via browser or cron, I getting error: Warning: chmod(): Operation not permitted in .....
I guess that something wrong with permissions, but I am not really good in server administration and can't understand what I can do =(
Please help, how I can fix this problem?
Because Apache (or the web server you're using) executes PHP using different Linux user (usually www-data), which obviously have different permission than the user account you used in access via SSH.
To tackle the problem, you first have to know the folder / file you're going to chmod() belongs to who. If it belongs to root, then it's not suggested to chmod via any scripts that is accessible by public due to security concerns.
If it belongs to your user name, say foo, you can change the ownership of the folder / file you're going to chmod() to be accessible by www-data group using chown() in SSH console, then you chmod() command can be executed without problem.
The user that PHP runs as must have permissions to chmod the given file or directory. If you're running this script via CRON, you get to set the user that PHP runs as right in the CRON job. If you're visiting the script in a browser, PHP is likely running as php or php-fpm or the web server user.
Simply ensure that the given file or folder is owned by the user that PHP runs as.
Note: It is not recommended that you run this script as root in CRON.
If you are editing /etc/crontab, make sure the user parameter (the one after week) is root.
If you are editing crontab via crontab -e, add user parameter crontab -eu root.
I have a code on PHP that was working in a server but we migrate that code to another server and now that code is not working, specifically we want to run an .exe file using PHP with the instruction exec
I debug the script and it looks be working properly and the IUSR user and IIS_IUSR have the correct permissions and actually the exe file is running, but, when it run it need generate some files that is the part that cause the issues, the program are trying to create files on the AppPool directory for example like this:
C:\MyPath\somewebsite.com\8áª\MyProgram\
Where C:\MyPath\somewebsite.com\ is the AppPool root directory and MyProgram\ is the directory that the app is creating
Where \8᪠is generated randomly and changes all the time that we try to run the program, debugging with Process Monitor I can get an error: PATH NOT FOUND and/or NAME INVALID, on the previous server we modify the user on the IIS to run the script (that was on IIS 6 now we are on IIS 8.5) and that files was created on the home directory of the user AND without the random directory, for example:
C:\Users\MyUser\MyProgram\
where MyUser is the user that we assigned, but on that new server we get the files on the AppPool directory no matter if we change the user
I think that we can solve that if we was able to define a path for the IUSR user and set it as "home" path but I cannot found where to modify the IUSR user, I know that is a build-in user that IIS create but I'm not sure if I can edit that settings for that user.
I already mention that we used IIS but just as an extra data, we are running that over Windows Server 2012 R2
Any suggestion?
You topic / question is:
IIS does not allow run .exe file using excec command on PHP
which is the correct behavior! You don't want to run .exe files through PHP, really. You have to give the IUSR execute permissions on cmd.exe first, meany you might as well give all your virtual users administrator permissions.
lot of time after but, PHP side was ok, the problem was on the .exe file, the exe file create some files that was used for the same exe program, but it uses relative paths so when the process run makes that did not found the files generated and this caused the errors
I have a PHP file, hook.php, that looks like this:
<?php
`cd .. && git pull`;
The file is located in /var/www/oliverash.me/site/. However, the git repository that needs to be pulled is /var/www/oliverash.me/. ./site is the folder Apache looks to as the document root.
When I run the file in my browser, it does not seem to be pulling the repository.
I have also tried to echo the result, but the page is blank.
<?php
echo `cd .. && git pull`;
I can't post a comment in reply to you, but I am assuming that you are running a *nix system. You will be getting a permission denied if your apache/php daemons don't have permission to access .git/. You can change the owner/group of the .git/ directory recursively. Or do a chmod -R o+rw .git/* to give everyone (ie, not owner, not group) access to read and write in the git directory, which should clear up the permissions error that you are getting.
EDIT
Just re-read the question, so what follows probably isn't needed, but leaving it just in case.
Though, doing that, you need to keep in mind that anyone with access to your server will be able to go to http://myurl/.git/ etc to access those. So as a security precaution, I would add a .htaccess file like:
order deny, allow
deny from all
in the.git directory so that apache will deny access from a web browser to everything in there.
You've certainly got a permissions issue, maybe a couple.
The php page is going to execute as the apache user
That user must be able to write to the git repo in question
That user must be able to do the pull in question
You didn't specify what the source of the pull is, but if it's, for instance, a git: or ssh: repo, then that user will need perms (keys, username/password, whatever) to access the remote to do the pull from.
Just saw that it wants /var/www/.ssh - so you're using a ssh:// remote, which is fine, but since it's running as user apache (/var/www is user apache's homedir), it's looking for keys in /var/www/.ssh, which it's not finding, hence the failure. Solutions:
use sudo to switch to a user that does have perms and run the git pull as that user (in your php, do 'sudo git pull', and in your /etc/sudoers put a line allowing user apache to run the 'git pull' command)
set up a .ssh/config file that specifies a Host that's the remote, a User to use to login, and an Identity that is the path to the private key that the remote will allow to ssh in and do the pull.
create webhook.php in the root or anywhere from where you can access it
$result = exec("cd /path/to/repo && git pull origin branch");
make sure the permission is 775 and user of your file and your site directory is www-data owner
You are having a problem with the user here that is executing the command.
According to your various comments, the system commands are executed as the user named apache (homedir is /var/www). You can verify this by running the whoami command from within your PHP script:
<?php echo `whoami`;
That user named apache is commonly the user your webserver runs under, which then runs PHP which then runs the shell commands.
Obviously you want to run the command as some other user, but you have not shared so far the information which one.
Run the shell command under the right user and the problem should go away.
On a linux system, the command to run other commands under a different user is called sudo, another one su:
sudo(8) - Linux man page
su(1) - Linux man page
Alternatively you can make use of suexec to execute PHP under a different user than the webserver user.
In any case you need to ensure that you have a user that is able to execute the git command. I have no clue how you tested that on your own, best way I know is to ssh into the server box, do the git pull manually and collect the needed data like user-name, homedirectory etc. .
I am trying to create a directory using mkdir function in PHP. It works just fine when I am running it on the terminal using php a.php, but when I try to run it from the browser as server, I am not able to do it. Why is this?
SELinux is preventing httpd from doing so. See the httpd_selinux(8) man page for details.
It's because the system user your web server is running as doesn't have permission to mkdir. Give the web server process write access by changing the parent directory's owner or group.
I was experimenting with shell_exec and commands, and I can't seem to get this work. Im using the php shell_exec() function and running a screen capture command to take a snapshot of the desktop. When running the script locally through coda, it works fine. Then i ran it through my installion of apache through htdocs, and it runs, yet it doesn't save the image anywhere? For browsers, do i need to change the directory at all? this is what my super simple script looks like. Is this even possible?
<?
$command = "screencapture -iWP ~/Random/test.png";
shell_exec($command);
?>
I don't currently have access to a Mac to test, but I'd be extremely surprised and more than a little concerned if that did work.
On the server, apache should be running under a different user ID to the logged in user, which means the attempt to grab the framebuffer should fail.
If it did at least write (or try to write) an image, then it will be ~/Random/test.png; e.g. if apache runs as a user called apache, the target filename is ~apache/Random/test.png
OSX is basically UNIX, and a key feature of UNIX-like operating systems is security. The video framebuffer should only be accessible to processes running under the UID of the logged in user (or root). Daemon processes like apache httpd should be running under their own, non-root UID.
You probably have to specify the full path of the executable. Also, specifying the full path of the output PNG would help too because they're different users.
Run the command
which screencapture
To find the path that the executable is located in. The output file must be in a writable directory for the user that apache is running under (usually apache). You can check the user that apache is running under by looking in the apache configuration, or just running "top" (as root).
Hope that helps.