RewriteRule - 或 document_root 到子目录（不是重定向）的别名会导致“错误请求”或“内部服务器错误”

Question

After exhaustive searching on SO and SF I find this rather concerning. All of the related answers causes Apache 2.4 to just break and I have no idea what I'm doing wrong, it should be really simple.

For brevity, here is the code, though I've tested each separately, not all in 1 go as below:

    RewriteRule ^(.*)$ .anon.dir/Repo/data/native/fuse/$1 [L]
    ## Bad Request

    RewriteRule .* .anon.dir/Repo/data/native/fuse/
    ## Bad Request

    RewriteRule ^(.*)$ /.anon.dir/Repo/data/native/fuse/$1 [L]
    ## Internal Server Error

    RewriteRule ^(.*)$ - [E=TRGT:".anon.dir/Repo/data/native/fuse/index.php"]
    RewriteRule ^(.*)$ %{ENV:TRGT}
    ## Bad Request

    ## Alias / %{DOCUMENT_ROOT}/blah ... for vHost/apache conf only
    ## Internal Server Error - in htaccess

The actual code is in an <if> block, this exactly:

<If "%{QUERY_STRING} =~ /(^|&)ANONFUSETEST($|&)/">
    Options -MultiViews
    RewriteEngine on

    RewriteRule ^(.*)$ .anon.dir/Repo/data/native/fuse/$1 [L]
</If>

I'm using Apache 2.4 and the target subdirectory has no htaccess in it, only an index.php file with <h1>It Works!</h1> inside it .. This is on a shared host at a respectable hosting company, so there should be no funny business going on elsewhere.

Here are some useful links at ServerFault and StackOverflow and one more .. although as mentioned, it doesn't work .. or I'm doing something wrong, which is most probably the case.

Does it have to do with the . at the start of the path? -that it may be seen as "hidden"? .. I'm out of ideas :/

Any help will be appreciated and rewarded in kind, thanks in advance.

Answer 1

The working solution is rather simple, have a look, elaboration follows:

    RewriteEngine on

    RewriteCond %{REQUEST_URI} !/.anon.dir/Repo/data/native/fuse/
    RewriteRule ^(.*)$ /.anon.dir/Repo/data/native/fuse/ [L,QSA]

There seems to be some internal safety check that enforces a condition that makes sure the request is not the same as the target, additionally:

• the target-path starts and ends with a slash
• appending $1 to the target will result in 404 , so QSA is used instead
• if you want to define the path once, you're out of luck, or so it seems

Assigning the path in a variable and using it this way will cause issues, like the following:

<If "%{QUERY_STRING} =~ /(^|&)ANONFUSETEST($|&)/">
    RewriteEngine on

    RewriteRule ^(.*)$ - [E=TRGT:/.anon.dir/Repo/data/native/fuse/]

    RewriteCond %{REQUEST_URI} !%{ENV:TRGT}
    RewriteRule ^(.*)$ %{ENV:TRGT} [L,QSA]

    ## result is `Bad Request`
</If>

If you know how to make this more "dynamic" eg: using the path only once, then your answer will be preferable.