This seems to be a common problem, but I can't seem to find the exact answer I'm looking for.
I'm running XAMPP on OSX, and in my web app am trying to allow an admin to create a directory if none exists for a new year. So, under htdocs/mywebapp/images, if a directory doesn't exist for, say, 2012, then mkdir() and begin uploading files to that directory.
Running ls -l from the mywebapp directory shows that the images directory is created as
drwxr-xr-x 18 myusername admin 612 Feb 12 17:32 images
so the first thing I tried was
sudo chmod 0775 images
which didn't help. Looking at the httpd.config file shows that the user/group is defined as www:www so I tried changing the owner/group to that:
sudo chown www:www images
which results in, as expected:
drwxrwxr-x 18 _www _www 612 Feb 12 17:32 images
but, again, I get the Permission denied error. So, I'm at a loss as to what my next step is.
The php code I'm using to get to this point is here:
$directory_self = dirname(__FILE__);
$base_image_path = $directory_self . '/images/'; // outputs "/Applications/XAMPP/xamppfiles/htdocs/mywebapp/images/"
$year = '2012';
$image_path = $base_image_path . $year . '/'; // outputs "/Applications/XAMPP/xamppfiles/htdocs/mywebapp/images/2012/"
if(!file_exists($image_path)){
mkdir($image_path, 0775);
}
Thanks for your help.
try to check real process owner:
$processUser = posix_getpwuid(posix_geteuid());
echo($processUser['name']);
Related
I'm new to PHP and just faced the problem with creating and opening a file with fopen(). Here is my code:
<?php
$new_file = fopen('file.txt', 'w') or die("Cannot create a file");
$text = <<<_END
Line 1
Line 2
Line 3
_END;
fwrite($new_file, $text) or die('Cannot write to the file');
fclose($new_file);
When I try to run the file by opening it in the browser I see the next message: 'Cannot create a file'. But when I start debug session everithing works as it supposed to. I suspect that there is some issue with permissions and XDebug uses root access unlike the usual interpreter?
to write and read permission
chown -R www-data:www-data /var/www/dicrctoy
chmod -R 775 /var/www/dicrctoy
I have tested in my local environment no error was found
if you're using mac you should check the file permission
use chmod command to change permission
What is the meaning of chmod 777?
readable, writable and executable
Setting 777 permissions to a file or directory means that it will be readable, writable and executable by all users
To solve this problem first of all I was needed to check PHP user with the next command:
<?php echo `whoami`; ?>
It outputs:
www-data
This is the default PHP user. Next I checked the owner of the folder with this command:
ls -dl /var/www/html/test
It outputs:
drwxrwxr-x 2 username username 4096 Jun 26 12:49
Next I've sat permissions to the PHP user by running:
sudo chown -R www-data /var/www/html/test
Checking once again if the owner changed
ls -dl /var/www/html/test
And now it outputs
drwxrwxr-x 2 www-data username 4096 Jun 26 12:55
Done. Now I'm able to create and write to the file.
I am working on apache sever and generating some tmpdir using follwoing code.
$tmpdatadir = "/home/user/tmpdata/".$id."/";
if (mkdir($tmpdatadir)) {
/* do something */
}
dir created:
drwxr-xr-x 2 www-data www-data 4096 Aug 30 17:16 147257020639481
but when i try to write some data using
exec ("cat file.txt >". $tmpdatadir."sample.txt")
i get following error message.
permission denied. As i copy file as user:user so how can i change permision of directory. I found chown does this but i am not sure how can i change ownership of whole directory.
First of all, please review the permissions for www-data folder with ls /lrt, is that way you can see if your user is able to write on the file.
Then, you can use the command: chmod 666 www-data to change the permission of the file to read and write for all users, in this link you can find the syntax for chmod command and a useful calculator if you want limit other users.
Also I share with you the specific functions for commands chown and chmod. See this site.
I have an upload script that uploads a zip file to a directory on my website, it then unzips the file and creates a directory for each file uploaded.
drwxrwxrwx 7 Fabulous admin 238 12 Jan 18:20 .
drwxrwxrwx 39 Fabulous admin 1326 12 Jan 12:28 ..
-rwxr--r--# 1 Fabulous admin 15364 12 Jan 18:21 .DS_Store
drwxr-xr-x 4 nobody admin 136 12 Jan 18:20 2012_06
drwxr-xr-x 4 nobody admin 136 12 Jan 18:20 2012_07
-rwxr--r-- 1 Fabulous admin 2904 31 Oct 16:11 index.php
I have another php script that runs which copies the files in the directories 2012_06 and 2012_07 which where created by the upload script. Every thing is working fine via the browser. However I am trying to automate the process via the command line using the unix command line to call the scripts.
The problem is the script runs if I change ownership of the directories to Fabulous by using the following commands
cd upload
sudo chown -R Fabulous:admin .
However when I do this then my upload script index.php no longer has permission access to upload files to the upload directory unless I change ownership back to nobody.
Error Message
Warning:
rename(/htdocs/data_vis/upload/2012_06/Audit_Log.csv,htdocs/data_vis/data_out/2012_06_Audit_Log.csv): Permission denied in
/htdocs/data_vis/rename_files_in_sdir_with_sdir_name_prefix.php on line 27
Any suggestions/advice or fixes on what I should be doing or the correct way to resolve this via permissioning or any other method are welcome. Thanks in advance.
Either add them both to a group or have the file owned by nobody and group owned by Fabulous you dont need it to be admin, root can access everything anyway
the easiest way is make sure the group stays the same is using sticky bits
if /path/to/dir is owned by the correct group
chmod g+s /path/to/dir
will make it so all new folders under /path/to/dir eg /path/to/dir/1 are owned by the same group as /path/to/dir instead of the users default group
https://superuser.com/questions/102253/how-to-make-files-created-in-a-directory-owned-by-directory-group
Then both your web application should be ok and your cron script without modifing the code
I used the following to change ownership of the files in the directory so the other scripts can use the files.
<?php
// File name and username to use
$file_name= "foo.php";
$path = "/home/sites/php.net/public_html/sandbox/" . $file_name ;
$user_name = "fred";
// Set the user
chown($path, $user_name);
// Check the result
$stat = stat($path);
print_r(posix_getpwuid($stat['uid']));
?>
I run a third party PHP application on my local AMP stack on my Mac. I recently bought a new Mac Mini with Lion, and am trying to set it up. My previous computer was a MB air with MAMP. Now I'm using the built-in apache/php and a homebrew installed MySQL.
Here's my problem: I have a directory with symbolic links. These symlinks are to directories, and the PHP application is checking these with is_dir().
On my Lion AMP setup, this is_dir() is failing. The same setup on my Snow Leopard MAMP is_dir() works fine with my symlinks.
Here's where it gets more curious. If I do php -a (php interactive command line mode), and do is_dir() on the very same directories, it returns true. It only returns false in the context of an apache request. This makes me think it has something to do with the apache user (which is _www) not being able to access the symlinks. Troubleshooting this falls outside of my expertise.
Other notes:
Yes, I have FollowSymLinks turned on in my apache config, and in
fact, the directory where the symlinks in question reside is a
symlink itself. Apache has no problem with it. Until PHP is_dir() is
used.
No, I cannot edit the PHP application and just fall back on is_link()
and readlink().
This exact same setup worked on my Snow Leopard/MAMP setup.
Any ideas?
Ah saw your comment on changing them to 777 but still wondering why it's not working.
My solution below might not help you.
EDIT:
If you have access to /etc/apache2/httpd.conf, edit it via sudo vi /etc/apache2/httpd.conf.
Then change these 1 of these lines or both of them
User _www
Group _www
Here is an example of my directory listing.
ace:remote-app ace (git::master)$ ls -al
total 72
drwxr-xr-x 24 ace staff 816 7 Aug 00:24 .
drwxr-xr-x 11 ace staff 374 4 Aug 13:46 ..
drwxr-xr-x 3 ace staff 102 12 Jul 17:06 .bundle
drwxr-xr-x 14 ace staff 476 7 Aug 02:29 .git
-rw-r--r-- 1 ace staff 100 1 Aug 19:20 .gitignore
-rw-r--r-- 1 ace staff 9 1 Aug 19:20 .rspec
drwxrwxr-x 10 ace staff 340 14 Jul 15:58 public
Now my public directory has 775 permissions, meaning owner and group have full permissions while other users can only read and execute.
It depends if you want apache user to become ace from the default _www or the apache group to become staff from the default _www.
Once you've decided on which to change, restart apache.
/usr/sbin/apachectl graceful
And your page should now have access to the directories / files.
One thing to note is that you have to change ownership for files that have been already been written by your webpage as those have _www:_www ownership and you won't have access to them after the restart.
You can change their new ownership through this, -R is to make it recursive.
sudo chown -R newapacheuser:newapachegroup <path>
Did you check permissions/owner?
From the PHP manual: Note: The results of this function are cached.
I had a similar issue. I created the following link:
cd /home/mike/uploads
ln -s ./data /sites/www.test.com/docroot/data
Then I created a test.php file in /sites/www.test.com/docroot that just did the following:
$dir = "/sites/www.test.com/docroot/data";
"is_dir\t\t" .is_dir($dir) ."\n";
When I ran test.php from the command line, it would show up as is_dir was True, but when I loaded test.php from a browser through apache, it was False.
I went to /sites/www.test.com/docroot/data and did a
chmod -R 755 .
That didn't change anything. Then I realized, the parent to the actual symlinked dir needed proper permissions set (/home/mike/uploads). I did a chmod on that dir, and everything worked!
Check open_basedir directive in php config. That path should also be included.
In linux, you can list multiple folders by separating them with a colon.
https://www.php.net/manual/en/ini.core.php#ini.open-basedir
I'm working on a PHP script that runs a Python script on the server. My server is running CentOS 5.4 with Apache 2.2.3 and PHP 5.1.6.
This is the PHP code:
chdir("/home/cjones/git/pywrapper");
$output = shell_exec("python /home/cjones/git/pywrapper/wrapper.py");
This give me this error:
Warning: chdir() [function.chdir]: Permission denied (errno 13) in /var/www/html/wrapper.php on line 20
In the shell_exec call, I've also tried using "cd /home/cjo... && python ...", but that doesn't work.
The script needs to be run from that directory or it starts throwing errors because it can't find the files it wants. If all else fails, I could just hardcode the paths into the python script instead of using relative paths.
This is the relevant output of ls -l for ~/git
drwxrwxr-x 5 cjones cjones 4096 Mar 23 08:45 pywrapper
I had also tried chmod 777 ~/git/pywrapper but that didn't work. The current setting is just 775.
My best guess is that the apache user for some reason doesn't have access to my user's home directory? But I don't know how to allow it to.
It's not enough to change permissions on just the 'git' and 'pywrapper' directories. Apache will need to be able to access 'cjones' as well. Most Linux boxes default to users' home directories being mode 0700. If you don't want to loosen the permissions to the 0777 level and grant global access, you could change the group ownership to a new group that you and apache share, and grant 0770 to /home/cjones, /home/cjones/git, and /home/cjones/pywrapper
It is a better idea to have your web site's directory not be in your home directory, but symlink it to e.g. /var/www/mysite.
That said, you can chmod o+x ~; chmod o+x ~/git; #etc. for the directories and chmod o+r ~/git/pywrapper/blablablabla for the files python needs to be able to read when running as Apache.