Php having access to the filesystem - getting Permission Denied

General Tech Bugs & Fixes 2 years ago

0 2 0 0 0 tuteeHUB earn credit +10 pts

5 Star Rating 1 Rating

Posted on 16 Aug 2022, this text provides information on Bugs & Fixes related to General Tech. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.

Take Quiz To Earn Credits!

Turn Your Knowledge into Earnings.

tuteehub_quiz

Answers (2)

Post Answer
profilepic.png
manpreet Tuteehub forum best answer Best Answer 2 years ago

 

I'm trying to track down a php issue with a tool that I'm trying to install, and have tracked it down, I believe, to a permissions issue with the filesystem, I believe...

I now have the following simple .php file:

php
system("/bin/ls");
?>

When I run this, I see the following error in /var/log/httpd/error_log:

sh: /bin/ls: Permission denied

If I change the php to run:

php
system("/bin/env");
?>

Then I see the output that I was expecting.

So it's not the execution that doesn't have permissions, it's what the executable is trying to read that is having problems.

(The tool I am trying to get working here is phplicensewatcher - a tool for keeping an eye on what is going on with various license management daemons)

Thanks

profilepic.png
manpreet 2 years ago

The first two thing I would check:

  • What user is PHP running under? If it's spawned by Apache, it is likely running as "nobody", "www" or "apache" depending on the version and configuration.

  • What directory are you trying to list? Check the permissions on that directory. Does the user PHP is running as have permission to access that directory?


0 views   0 shares

No matter what stage you're at in your education or career, TuteeHub will help you reach the next level that you're aiming for. Simply,Choose a subject/topic and get started in self-paced practice sessions to improve your knowledge and scores.