How to change Apache's hard coded Error pages, instead of using ErrorDocument directive. Because, I do not want to place the ErrorDocument file inside the htdocs folder, as it creates some issues when the user visits the error page itself. Such as the environment variable REDIRECT_URL not working, and stuff like that. I have tried to find stuff in the apache directory, but no luck, i cannot find anything that can be modified to change the hardcoded error pages itself. Is there a way at all to do that?
You can edit them if you install apache from source, download the source from httpd.apache.org/download.cgi, and you can find the contents of the files using grep -rnw '/path/to/somewhere/' -e 'texttofind' if using linux. And modify them to your needs (carefully of course), and you can compile it and use it.
But, I would suggest you to just stick with the ErrorDocument directive, which is much simpler.
Happy Cod3ing.
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I took over a website which I'm supposed to admin and somebody brought to my attention that certain Indexes and Files are available, which shouldn't be. I will be using dummy names.
You were able to access example.com/intern before, but I changed a line in /etc/apache2/apache2.conf according to this https://stackoverflow.com/a/31445273 . This worked partly, as I get a 403-Forbidden when I now navigate to example.com/intern and that's basically what I want.
However the directory intern governs a file called file.php.bak aswell as file.php. When I navigate to example.com/intern/file.php I get a white website. I am however not sure, if you are able to access file.php in another way, because the site does load and I don't get a 403 like before. What is way worse and the reason I am struggling with this is: If I go to example.com/intern/file.php.bak then my Browser (Firefox) offers me to download file.php.bak, which I can read in plaintext. I want all files in intern to not be accessible via the website, but I have no idea how to do this. Can anybody help?
Things I've tried:
Removing the Indexes from the apache2.conf file like mentioned above. It only puts the 403 on the directory itself and not recursively for all the files in it.
Writing a .htaccess file as described here: https://fedingo.com/how-to-prevent-direct-file-download-in-apache-server/ and putting it in intern with the same result as in 1)
Putting an empty index.html file in the intern directory. This leads to no more 403 in example.com/intern, but the download on example.com/intern/file.php.bak is still possible. I've also tried index.php with the same result.
File System:
The application runs from /var/www/application which is also the folder for the /var/www/application/index.php I want to use. The /var/www/application/intern directory is also there. While it isn't browsable anymore, the files in it still are accessible. /var/www/application/intern/file.php can be navigated to via example.com/intern/file.php, but it seems like it can't be downloaded or read as it results in a white page. /var/www/application/intern/file.php.bak can however be downloaded via example.com/intern/file.php.bak.
Let's say Apache document root is set to DocumentRoot "/folder_one/folder_two"
Placing files in a folder_one will prevent people browsing your apache server and requesting the files directly.
Place index file in folder_two and include some code such as PHP to tell apache to include whatever files you want from folder_one.
In this manor Apache will still be able to serve whatever files you want from folder_one and people will not be able to request the files directly as the are located in a directory above the Apache document root.
I set up a little Apache2 server on a Raspberry PI4. Now I’m looking for a way to hide the real directory path displayed in the URL. I read around that you should deal with a file called .htaccess but, I don’t even know what to actually look for on the internet. How can I display an arbitrary url in the address bar of the browser, Hiding file extension like .php and file path?
You make rewrite rules in an Apache config file, a .htaccess file for example. One way you could achieve this is to create re-write rules in a .htaccess file. Use to below link to test your rewrite rules, then once you have that part working implement on your live apache installation.
https://htaccess.madewithlove.be/
I have a Sites folder inside my user directory, where I put all of my apache project files, the weird thing is that I can access all of my folders, except for the main route "localhost/" which, of course, has no index.html document on it, its just folders, but I know I should be able to see something like this:
Index of Sites.
.project1
.project2
.project3
Instead, I get this
403 Forbidden
On my new job I was assigned to this Mac PC that belonged to someone else, and this person of course needed the same tools that I have been asked to download, they told me to uninstall all of that software and install it all over again (which I did), mainly the software that I'm using is an apache server with homebrew.
I have always had this problem, but I ignored it because I thought, well, do I really need to see an "index of Sites" page when I can manually change to whatever folder I want? my answer was, not really.
But yesterday they asked me to download webpack and nodeJs, and I did, so I made a dummy project with webpack that contained all of the js and config files, but it didn't have an index.html file. And surprise surprise, I got a 403 forbidden error when entering the dummy folder in localhost.
So I'm guessing that my apache for some reason is giving me 403 errors when I do not have an index.html file or an index.php file to show.
Have you ever experienced something like this?
I had a hard time deciding how I should manage these errors (404, 500, ...) and when I finally decided, I am encountering problems. This is a reeeeeally long question, I appreciate anyone's attempt to help!
Let me first describe how I decided to set it up. I have several sites hosted on a shared Dreamhost account. In the folder structure that I see, everything of mine on the server is under /home/username, and for example, site1.com's web root is at /home/username/site1.com
I am creating a generic error handler (php script) for errors like 404 not found, 500, etc. that I want to store above the web roots of my sites at /home/username/error_handler/index.php so that I can use an .htaccess file at /home/username/.htaccess which includes something like the following:
ErrorDocument 404 /error_handler/index.php
ErrorDocument 500 /error_handler/index.php
...and many more
When these errors occur on any of my sites, I want it to be directed to /home/username/error_handler/index.phpThis is the problem I'm having a hard time figuring out. The ErrorDocument directives above will actually cause Apache to look for /home/username/site1.com/error_handler/index.php
Anyway, the errors should be redirected to my error handling php script. The script will use $_SERVER['REDIRECT_STATUS'] to get the error code, then use $_SERVER['REDIRECT_URL'] and $_SERVER['HTTP_HOST'] to decide what to do. It will check if an error handler specific to that site exists (for example: site1.com/errors/404.php). If this custom page doesn't exist, it will output a generic message that is slightly more user-friendly and styled, and perhaps will include some contact info for me depending on the error.
Doing it this way lets me funnel all these errors through this 1 php script. I can log the errors however I like or send email notifications if I want. It also lets me set up the ErrorDocument Apache directives once for all my sites instead of having to do it for every site. It will also continue to work without modification when I move the site around, since I already have a system that scans the folder structure to figure out where my site roots are when they really aren't at the web root technically speaking. This may not be possible with other solutions like using mod_rewrite for all 404 problems, which I know is common. Or if it is possible, it may be very difficult to do. Plus, I have already done that work, so it will be easy for me to adapt.
When I am working on sites for which I don't have a domain name yet (or sites where the domain name is already in use at the moment), I store them temporarily in site1.com/dev/site3.com for example. Moving the site to site3.com eventually would cause me to have to update the htaccess files if I had one for each site. Changing the domain name would do the same.
Ex: a site stored at site1.com/dev/site3.com would have this in its htaccess file:
ErrorDocument 404 /site1.com/dev/site3.com/error/404.php
And it would have to be changed to this:
ErrorDocument 404 /site3.com/error/404.php
Obviously, this isn't a huge amount of work, but I already manage a lot of sites and I will probably be making more every year, 95% of which will be hosted on my shared DreamHost account. And most of them get moved at least once. So setting up something automatic will save me a some effort in the long run.
I already have a system set up for managing site-relative links on all my sites. These links will work whether the site exists in a subdirectory of an existing site, or in their own domain. They also work without change in a local development server despite a difference in the web root location. For example, on the live server, the site-relative http link /img/1.jpg would resolve to the file /home/username/site1.com/img/1.jpg while on my local development server it would resolve to C:\xampp\htdocs\img\1.jpg, despite what I consider the logical site root being at C:\xampp\htdocs\site1.com. I love this system, and it is what gave me the idea to set up something that would work automatically like I expected it to, based on the file structure I used.
So, if I could get it to work, I think this seems like a pretty good system. But I am still very new to apache configuration, mod_rewrite, etc. It's possible there is a much easier and better way to do this. If you know of one, please let me know.
Anyway, all that aside, I can't get it working. The easiest thing would be if I could have the ErrorDocument directive send the requests to folders above the web root. But the path is a URL path relative to the document root. Using the following in /home/username/.htaccess,
ErrorDocument 404 /error_handler/index.php
a request for a non-existent resource causes Apache to look for the file at
site1.com/error_handler/index.php
So I thought I should set up a redirection (on all my sites) that would redirect those URLS to /home/username/error_handler. I tried a few things and couldn't get any of them to work.
Alias seemed like the simplest solution, but it is something that has to be set at server runtime (not sure if that is the right terminology - when the server is started). On my local server, it worked fine using:
Alias /error_handler C:\xampp\htdocs\error_handler2
I changed the local folder to test that the Alias was functioning properly. (On the local server, the URL path specified by the ErrorDocument directive is actually pointing to the right folder, since in my local server the web root is technically C:\xampp\htdocs and I store the error handler I want to use is stored locally at C:\xampp\htdocs\error_handler\index.php)
Dreamhost has a web client that can create what I am guessing is an Alias. When I tried to redirect the folder error_handler on site1.com to /home/username/error_handler, it would seem to work right if I typed site1.com/error_handler in the browser. But if I typed site1.com/test1234 (non-existant), it would say there was a 404 error trying to use the error handler. Also, I would have to login through the web client and point and click (and wait several minutes for the server to restart) every time I wanted to set this up for a new site, even if I could get it to work.
So I tried getting it to work with mod_rewrite, which seems like the most flexible solution. My first attempt looked something like this (stored in /home/username/site1.com/.htaccess for now, though it would eventually be at /home/username/.htaccess:
RewriteEngine On
RewriteRule ^error_handler/index.php$ /home/username/error_handler/index.php
The plain english version of what I was trying to do above is to send requests on any of my sites for error_handler/index.php to /home/username/error_handler/index.php. The mis-understanding I had is that the subsitution will be treated as a file path if it exists. But I missed that the documentation says "(or, in the case of using rewrites in a .htaccess file, relative to your document root)". So instead of rewriting to /home/username/error_handler/index.php, it's actually trying to rewrite to /home/username/site1.com/home/username/error_handler/index.php.
I tried including Options +FollowSymLinks because in the Apache documentation it says this:
To enable the rewrite engine in this context [per-directory re-writes in htaccess], you need to set "RewriteEngine On" and "Options FollowSymLinks" must be enabled. If your administrator has disabled override of FollowSymLinks for a user's directory, then you cannot use the rewrite engine. This restriction is required for security reasons.
I searched around for a while and I couldn't find anything about how Dreamhost handles this (probably because I don't know where to look).
I experimented with RewriteBase because in the Apache documentation it says this:
"This directive is required when you use a relative path in a substitution in per-directory (htaccess) context unless either of the following conditions are true:
The original request, and the substitution, are underneath the DocumentRoot (as opposed to reachable by other means, such as Alias)."
Since this is supposed to be a URL path, in my case it should be RewriteBase /, since all my redirects will be from site1.com/error_handler. I also tried Rewrite Base /home/username and RewriteRule ^error_handler/index.php$ error_handler/index.php. However, the Rewrite Base is a URL path relative to the document root. So I need to use something like an alias still. The implication in the quote from the documentation above is that it is possible to use mod_rewrite to send content above the web root. One of the many things I don't know is what the 'other means' besides Alias might be. I believe Alias might not be an option on Dreamhost. At least I couldn't make sense of it.
Why not use error pages in the site root, then include the actual file from the shared section?
I'm a self-taught coder and I like to debug by echoing suspicious variables and commenting out code.
Lately, I've had to learn more about the .htaccess file. I need it to do things like interpret php scripts as php5, url rewriting, limit file upload size etc.... I have a lot of trouble debugging a .htaccess file. I often have to migrate PHP applications from one shared hosting environment to another. Sometimes this breaks the .htaccess file (or instead, something in the .htaccess file breaks the site). I check to make sure domain names are updated.
Are there popular techniques for debugging a .htaccess file? Is it just look in the apache logs? Anything else?
Looking in the apache logs is the easiest way to debug .htaccess imho (adding rewriteLog Directive if necessary)
About migrating: if you are not using any physical file paths inside .htaccess (i.e. /var/www/site/script.php) they should be working without problems. If this is not the case, first try to remove all options and leave only redirect directives, in this mode you can see if it's problem with server configuration which denies rewriting of default settings.
Some reference