Apache rewrite rule in htaccess to use an alias

Question

It drives me crazy! This is my document root: /var/www/html/app

My alias is: http://example.com

What rewrite rule shall I write to do the following? When users visit http://example.com/test1/test2 I want to serve the application as it was served from document root. Here is my htaccess. It is a clean one, nothing special there

#
# Apache/PHP/Drupal settings:
#
# Protect files and directories from prying eyes.
<FilesMatch "\.(engine|inc|install|make|module|profile|po|sh|.*sql|theme|twig|tpl(\.php)?|xtmpl|yml)(~|\.sw[op]|\.bak|\.orig|\.save)?$|^(\.(?!well-known).*|Entries.*|Repository|Root|Tag|Template|composer\.(json|lock)|web\.config)$|^#.*#$|\.php(~|\.sw[op]|\.bak|\.orig|\.save)$">
 <IfModule mod_authz_core.c>
 Require all denied
 </IfModule>
 <IfModule !mod_authz_core.c>
 Order allow,deny
 </IfModule>
</FilesMatch>
# Don't show directory listings for URLs which map to a directory.
Options -Indexes
# Set the default handler.
DirectoryIndex index.php index.html index.htm
# Add correct encoding for SVGZ.
AddType image/svg+xml svg svgz
AddEncoding gzip svgz
# Most of the following PHP settings cannot be changed at runtime. See
# sites/default/default.settings.php and
# Drupal\Core\DrupalKernel::bootEnvironment() for settings that can be
# changed at runtime.
# PHP 7, Apache 1 and 2.
<IfModule mod_php7.c>
 php_value assert.active 0
</IfModule>
# Requires mod_expires to be enabled.
<IfModule mod_expires.c>
 # Enable expirations.
 ExpiresActive On
 # Cache all files for 2 weeks after access (A).
 ExpiresDefault A1209600
 <FilesMatch \.php$>
 # Do not allow PHP scripts to be cached unless they explicitly send cache
 # headers themselves. Otherwise all scripts would have to overwrite the
 # headers set by mod_expires if they want another caching behavior. This may
 # fail if an error occurs early in the bootstrap process, and it may cause
 # problems if a non-Drupal PHP file is installed in a subdirectory.
 ExpiresActive Off
 </FilesMatch>
</IfModule>
# Set a fallback resource if mod_rewrite is not enabled. This allows Drupal to
# work without clean URLs. This requires Apache version >= 2.2.16. If Drupal is
# not accessed by the top level URL (i.e.: http://example.com/drupal/ instead of
# http://example.com/), the path to index.php will need to be adjusted.
<IfModule !mod_rewrite.c>
 FallbackResource /index.php
</IfModule>
# Various rewrite rules.
<IfModule mod_rewrite.c>
 RewriteEngine on
 # Set "protossl" to "s" if we were accessed via https://. This is used later
 # if you enable "www." stripping or enforcement, in order to ensure that
 # you don't bounce between http and https.
 RewriteRule ^ - [E=protossl]
 RewriteCond %{HTTPS} on
 RewriteRule ^ - [E=protossl:s]
 # Make sure Authorization HTTP header is available to PHP
 # even when running as CGI or FastCGI.
 RewriteRule ^ - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
 # Block access to "hidden" directories whose names begin with a period. This
 # includes directories used by version control systems such as Subversion or
 # Git to store control files. Files whose names begin with a period, as well
 # as the control files used by CVS, are protected by the FilesMatch directive
 # above.
 #
 # NOTE: This only works when mod_rewrite is loaded. Without mod_rewrite, it is
 # not possible to block access to entire directories from .htaccess because
 # <DirectoryMatch> is not allowed here.
 #
 # If you do not have mod_rewrite installed, you should remove these
 # directories from your webroot or otherwise protect them from being
 # downloaded.
 RewriteRule "/\.|^\.(?!well-known/)" - [F]
 # If your site can be accessed both with and without the 'www.' prefix, you
 # can use one of the following settings to redirect users to your preferred
 # URL, either WITH or WITHOUT the 'www.' prefix. Choose ONLY one option:
 #
 # To redirect all users to access the site WITH the 'www.' prefix,
 # (http://example.com/foo will be redirected to http://www.example.com/foo)
 # uncomment the following:
 # RewriteCond %{HTTP_HOST} .
 # RewriteCond %{HTTP_HOST} !^www\. [NC]
 # RewriteRule ^ http%{ENV:protossl}://www.%{HTTP_HOST}%{REQUEST_URI} [L,R=301]
 #
 # To redirect all users to access the site WITHOUT the 'www.' prefix,
 # (http://www.example.com/foo will be redirected to http://example.com/foo)
 # uncomment the following:
 # RewriteCond %{HTTP_HOST} ^www\.(.+)$ [NC]
 # RewriteRule ^ http%{ENV:protossl}://%1%{REQUEST_URI} [L,R=301]
 # Modify the RewriteBase if you are using Drupal in a subdirectory or in a
 # VirtualDocumentRoot and the rewrite rules are not working properly.
 # For example if your site is at http://example.com/drupal uncomment and
 # modify the following line:
 # RewriteBase /drupal
 #
 # If your site is running in a VirtualDocumentRoot at http://example.com/,
 # uncomment the following line:
 # RewriteBase /
 # Redirect common PHP files to their new locations.
 RewriteCond %{REQUEST_URI} ^(.*)?/(install.php) [OR]
 RewriteCond %{REQUEST_URI} ^(.*)?/(rebuild.php)
 RewriteCond %{REQUEST_URI} !core
 RewriteRule ^ %1/core/%2 [L,QSA,R=301]
 # Rewrite install.php during installation to see if mod_rewrite is working
 RewriteRule ^core/install.php core/install.php?rewrite=ok [QSA,L]
 # Pass all requests not referring directly to files in the filesystem to
 # index.php.
 RewriteCond %{REQUEST_FILENAME} !-f
 RewriteCond %{REQUEST_FILENAME} !-d
 RewriteCond %{REQUEST_URI} !=/favicon.ico
 RewriteRule ^ index.php [L]
 # For security reasons, deny access to other PHP files on public sites.
 # Note: The following URI conditions are not anchored at the start (^),
 # because Drupal may be located in a subdirectory. To further improve
 # security, you can replace '!/' with '!^/'.
 # Allow access to PHP files in /core (like authorize.php or install.php):
 RewriteCond %{REQUEST_URI} !/core/[^/]*\.php$
 # Allow access to test-specific PHP files:
 RewriteCond %{REQUEST_URI} !/core/modules/system/tests/https?.php
 # Allow access to Statistics module's custom front controller.
 # Copy and adapt this rule to directly execute PHP files in contributed or
 # custom modules or to run another PHP application in the same directory.
 RewriteCond %{REQUEST_URI} !/core/modules/statistics/statistics.php$
 # Deny access to any other PHP files that do not match the rules above.
 # Specifically, disallow autoload.php from being served directly.
 RewriteRule "^(.+/.*|autoload)\.php($|/)" - [F]
 # Rules to correctly serve gzip compressed CSS and JS files.
 # Requires both mod_rewrite and mod_headers to be enabled.
 <IfModule mod_headers.c>
 # Serve gzip compressed CSS files if they exist and the client accepts gzip.
 RewriteCond %{HTTP:Accept-encoding} gzip
 RewriteCond %{REQUEST_FILENAME}\.gz -s
 RewriteRule ^(.*)\.css 1ドル\.css\.gz [QSA]
 # Serve gzip compressed JS files if they exist and the client accepts gzip.
 RewriteCond %{HTTP:Accept-encoding} gzip
 RewriteCond %{REQUEST_FILENAME}\.gz -s
 RewriteRule ^(.*)\.js 1ドル\.js\.gz [QSA]
 # Serve correct content types, and prevent double compression.
 RewriteRule \.css\.gz$ - [T=text/css,E=no-gzip:1,E=no-brotli:1]
 RewriteRule \.js\.gz$ - [T=text/javascript,E=no-gzip:1,E=no-brotli:1]
 <FilesMatch "(\.js\.gz|\.css\.gz)$">
 # Serve correct encoding type.
 Header set Content-Encoding gzip
 # Force proxies to cache gzipped & non-gzipped css/js files separately.
 Header append Vary Accept-Encoding
 </FilesMatch>
 </IfModule>
</IfModule>
# Various header fixes.
<IfModule mod_headers.c>
 # Disable content sniffing, since it's an attack vector.
 Header always set X-Content-Type-Options nosniff
 # Disable Proxy header, since it's an attack vector.
 RequestHeader unset Proxy
</IfModule>

• RavinderSingh13: Could you please share htaccess file which you have right now with you in your question please.

Answer 1

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.+) / [L,QSA,NE]

should redirect all requests to your sites root.

The L tag stops processing any further rewrite rules

The QSA tag appends the query string

The NE tag prevents escaping of the query string

EDIT: Added checks for existing paths and filenames and changed the mathching rule as Amit Verma suggested

• Amit Verma: By using your rule , a request for /test1/test2/ will redirect to / causing an infinite rewrite loop as the pattern ^(.*) also matches the rewrite destination .
• Retro: This leads to a page not found. test1/test2 isn't an existing path. example.com/test1/test2 should act like an alias of example.com Maybe I didn't make my serf clear earlier

Answer 2

I'd say you simply want a single internal rewrite rule, not a redirection:

RewriteEngine on
RewriteRule ^/?test1/test2/(.*)$ /1ドル [QSA,END]

You obviously need the rewrite module to be enabled in your http server for that.

Such rules should preferably get implemented in the actual http server's host configuration, as opposed to the usage of distributed configuration files (".htaccess"). Many reasons for that, most important are performance and robustness.

Answer 3

To redirect all requests to your sites root you can use .htaccess redirection that are written below

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.+) / [L,QSA,NE]

You can checks for existing paths and filenames and changed the matching rule

Usages:

The L tag stops processing any further rewrite rules to your files

The QSA tag appends the query string for processing

The NE tag prevents escaping of the query string