[PATCH ASF bugzilla #56288] mod_proxy_html could rewrite URLs in HTML style attributes too

[Micha Lenk]

Hi Apache developers,

In HTML you can have <div> tags that have a background image by 
providing a style attribute. E.g. this can be done by something fancy 
like this:

<div style="background:url(http://www.example.com/fancy-background.png) 
right 0px no-repeat; height:325px;">

Currently mod_proxy_html doesn't rewrite the URL in such style 
attributes (Thomas, Ewald, this is issue #22583 in our Mantis).

The attached patch tries to fix that by applying the configured string 
replacements also on style attributes.

Additionally it tries to make the code a bit more readable by renaming 
the function dump_content() to apply_urlmap(). This is what it actually 
does, especially after the call to AP_fwrite() has been moved outside of 
this function.

Please note that this patch requires the patch from issue #56284 to be 
applied first. Otherwise the last chunk will not apply. The attached 
patch is based on httpd trunk, rev. 1579365 plus the patch for issue 
#56284 applied.

Regards,
Micha