The not equal comparison (<>) of a variable with an empty string
could lead to false positive results as the compare do not check
the type and thereby could not make sure that the checked variable
is a string. The usage of the not identical comparison operator
(!==) make sure that the variable is a string and not empty.
This patch enables the use of forcessl together with a multiple domains
reverse SSL proxy (owncloud/core#1099) which have different hostname
and webroot for http and https access. The code assumes that the ssl
proxy (https) hostname and webroot is configured via overwritehost and
overwritewebroot.
Add support for a reverse proxy that only forwards SSL connections
unencrypted to the web server.
This patch allows to detect the reverse proxy via regular expression for
the remote IP address and conditional overwrite the host name, protocol
and web root.
Add support for a reverse proxy that handles multiple domains via different
web roots (http[s]://proxy.tld/domain.tld/owncloud).
As the reverse proxy web root is transparent for the web server the
REQUEST_URI and SCRIPT_NAME need manual adjustments. This patch replace
the direct use of this _SERVER variables with function calls and extend
this functions to overwrite the web root. Additionally it adds a Sabre
request backend that extends the Sabre_HTTP_Request to use the same
functions.
