Apache mass virtual hosts and lower case letters

PublishedFebruary 15, 2022

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Apache mass virtual hosts and lower case letters

Thomas Portelange

A Web Developer based in Belgium, specialized in PHP & JS development

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Setting up my new computer

I've been migrating all my local websites to a new computer, with a fresh install of WAMPServer (yes, I'm not a big docker & co fan). I used to configure my website with a nice little snippet to automatically create all my vhosts like this:

# # Dynamic Virtual Host Definitions # <IfModule mod_vhost_alias.c> # example.com --> /var/www/vhosts/example.com/www # www.example.com --> /var/www/vhosts/example.com/www # a.www.example.com --> /var/www/vhosts/example.com/a.www # shop.example.com --> /var/www/vhosts/example.com/shop <VirtualHost *:80> ServerName sub.domain ServerAlias *.*.* VirtualDocumentRoot "D:/www/%-2.0.%-1.0/%-3" </VirtualHost> <VirtualHost *:80> ServerName bare.domain ServerAlias *.* VirtualDocumentRoot "D:/www/%-2.0.%-1.0/www" </VirtualHost> <VirtualHost *:80> ServerName sub.domain ServerAlias *.*.* VirtualDocumentRoot "D:/www/%-2.0.%-1.0/%-3" SSLCertificateFile "D:/wamp64/bin/apache/apache2.4.51/conf/key/localhost/server.crt" SSLCertificateKeyFile "D:/wamp64/bin/apache/apache2.4.51/conf/key/localhost/server.key" SSLEngine on </VirtualHost> <VirtualHost *:80> ServerName bare.domain ServerAlias *.* VirtualDocumentRoot "D:/www/%-2.0.%-1.0/www" SSLCertificateFile "D:/wamp64/bin/apache/apache2.4.51/conf/key/localhost/server.crt" SSLCertificateKeyFile "D:/wamp64/bin/apache/apache2.4.51/conf/key/localhost/server.key" SSLEngine on </VirtualHost> <VirtualHost *:8000> ServerName sub.domain ServerAlias *.*.* VirtualDocumentRoot "D:/www/%-2.0.%-1.0/%-3/public" </VirtualHost> <VirtualHost *:8000> ServerName sub.domain ServerAlias *.*.* VirtualDocumentRoot "D:/www/%-2.0.%-1.0/%-3/public" SSLCertificateFile "D:/wamp64/bin/apache/apache2.4.51/conf/key/localhost/server.crt" SSLCertificateKeyFile "D:/wamp64/bin/apache/apache2.4.51/conf/key/localhost/server.key" SSLEngine on </VirtualHost> <VirtualHost *:8000> ServerName bare.domain ServerAlias *.* VirtualDocumentRoot "D:/www/%-2.0.%-1.0/www/public" </VirtualHost> <VirtualHost *:8000> ServerName bare.domain ServerAlias *.* VirtualDocumentRoot "D:/www/%-2.0.%-1.0/www/public" SSLCertificateFile "D:/wamp64/bin/apache/apache2.4.51/conf/key/localhost/server.crt" SSLCertificateKeyFile "D:/wamp64/bin/apache/apache2.4.51/conf/key/localhost/server.key" SSLEngine on </VirtualHost> </IfModule>

This allows me to map mywebsite.local to D:/www/mywebsite.local/ (and to the "public" folder if I'm using port 8000). This worked quite well, until my recent migration.

Seems working, but mod rewrite fails

In the snippet above, I was using a lowercase "d" instead. All the websites work, but as soon as you get a mod rewrite rule, you get an infinite loop resulting in an error 500. I scratched my head for a while, tried an older version of apache... nothing worked.

Until... I tried to rename the lowercase "d:/" to a "D:/"... and it worked! Why? I don't know ! Probably some odd bug that take case into account when interpreting mod rewrite rules.

Command Palette

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Setting up my new computer

Seems working, but mod rewrite fails