When the webserver is behind a reverse proxy, $ENV{REMOTE_ADDR} is not
the actual remote client's address but the reverse proxy's address. The
actual remote client's address is available from an environment
variable. The name of this variable depends on the proxy, e.g. pound
uses $ENV{HTTP_X_FORWARDED_FOR}.
As suggested by tyatsumi on the wiki, all access $ENV{REMOTE_ADDR} now
happens via a new function which allows users to override it in their
config file.
Recent GNU/Linux systems use ext3 or ext4 file systems. These use HTree
to index files. Wikipedia says: "HTree indexing improved the scalability
of Linux ext2 based filesystems from a practical limit of a few thousand
files, into the range of tens of millions of files per directory. [...]
HTree indexes are available in ext3 when the dir_index feature is
enabled. [...] HTree indexes are turned on by default in ext4."
Thus, instead of working on balanced-page-directories.pl, we decided to
get rid of these sub-directories altogether.
Unfortunately, this is backwards incompatible. Users wanting to upgrade
will need to install the upgrade.pl extension in order to upgrade the
file database.
Previously, no new pages could be created because of a deadlock. The
code mistakenly attempted to start migrating when a new page was
created, and since DoPost already held the main lock, migration failed.
The check was now fixed such that migration is not started when a new
page is being created.
When leaving a comment, users are given the option of providing a
homepage to link their name to. A common error is to just provide a
domain like "oddmuse.org" instead of a real URL. The resulting markup
used to be [oddmuse.org YourName] which doesn't do what the user
expected. That's why a piece of code used to check whether the homepage
starts with "http://" and if it doesn't, it prefixes it, resulting in
"[http://oddmuse.org YourName]". If the homepage started with
"https://", however, the code did the wrong thing. That's why we're now
checking whether the homepage starts with any known URL-protocol and a
colon.
With commit deec99c353 @InitOptions can
no longer be set at load time. Setting it at load time also disables
translations unless they get loaded earlier. Thus, @MyInitVariables.
