Case Insensitive : Any way to make a site case insensitive?

Discussion in 'HOWTO-Related Questions' started by pssadm, May 1, 2024.

  1. pssadm

    pssadm Member

    Hi all, I just transferred an old site into ISPConfig. Apparently the original site was from a windows IIS server and was not case sensitive. When in Linux Apache environment, everything is broken. Is there anyway to quickly make the site case insensitive? I don't want to change the behavior of the whole Apache server.. just this one site.

    Thanks in advance!!
  2. Th0m

    Th0m ISPConfig Developer Staff Member ISPConfig Developer

    What exactly shall be case insensitive? The file names?
  3. pssadm

    pssadm Member

    It seems the folders and filenames are now all case sensitive. As an example the .html files make reference to either "/images" or "/Images" or a filename in Linux would have a capital letter in it, but as in the previous example, the html code calls for all lowercase lettering. Hope I verbalized that correctly.:)
  4. till

    till Super Moderator Staff Member ISPConfig Developer

    Filenames in Linux are always case-sensitive. But there are some workarounds:
    Apache web server does not natively support case-insensitive file handling on case-sensitive file systems like those commonly used in Linux. However, you can achieve case-insensitivity in Apache through various workarounds:

    mod_rewrite: This module can be used to rewrite URLs in a case-insensitive manner. You can define rewrite rules in your Apache configuration files (such as .htaccess or httpd.conf) to redirect or rewrite requests regardless of the case used in the URL.

    Here’s a basic example of how you might set up a rule in your .htaccess file to handle case insensitivity:
    RewriteEngine On
    RewriteMap lowercase int:tolower
    RewriteCond %{REQUEST_URI} [A-Z]
    RewriteRule (.*) ${lowercase:$1} [R=301,L]
    This setup uses the RewriteMap directive to create a mapping function (lowercase) that converts the requested URI to lowercase. The RewriteRule then redirects requests with any uppercase letters to the lowercase version of the URI.
    mod_speling: Apache also provides the mod_speling module (note the intentional misspelling: it’s speling, not spelling). This module attempts to correct mistaken URLs that might be due to capitalization errors (among other things like minor spelling mistakes). To use mod_speling, you need to enable it and configure it as follows:

    LoadModule speling_module modules/
    CheckSpelling On
    With CheckSpelling On, Apache will try to find files that closely match the case-insensitive spelling of the requested filename.

    Each of these methods has different implications on performance and behavior, especially with URL rewriting which might lead to unexpected results if not carefully tested. Choose the one that best suits your needs and the specifics of your server setup.

    Source: ChatGPT
    Th0m and ahrasis like this.

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