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It contains a routine parse_uri_components_regex() and friends which
tries to break an URI into its parts. These parts are stored in a new
uri_components structure within each request_rec and are therefore
available to all routines which act on a request.
Additionally, an unparse routine is supplied which re-assembles the
URI components back to an URI, optionally hiding the username:password@
part from ftp proxy requests, and other useful routines.
Within the structure, you find on a ready-for-use basis:
   scheme;     /* scheme ("http"/"ftp"/...) */
   hostinfo;   /* combined [user[:password]@]host[:port] */
   user;       /* user name, as in http://user:passwd@host:port/ */
   password;   /* password, as in http://user:passwd@host:port/ */
   hostname;   /* hostname from URI (or from Host: header) */
   port_str;   /* port string (integer representation is in "port") */
   path;       /* the request path (or "/" if only scheme://host was given) */
   query;      /* Everything after a '?' in the path, if present */
   fragment;   /* Trailing "#fragment" string, if present */
plus flags to indicate whether the strings have valid values.
This is meant to serve as the platform for *BIG* savings in
code complexity for the proxy module (and maybe the vhost logic).
NOTE: This code is enabled only if the WITH_UTIL_URI define is set;
currently this is not enabled by default.  [Martin Kraemer]

Reviewed by: Dean Gaudet (on a previous occasion)


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expansions in mod_rewrite rulesets.


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We have three locations where one can construct a string in rewriting rules by
expanding $N, %N, %{NAME} and ${map:key}:

  - RewriteCond <Location-1>  ...
  - RewriteRule ...           <Location-2> ...
  - RewriteRule ...           ...          [..,E=NAME:<Location-3>,...]

And just after I've added exact comments of what we expand in each location, I
discovered that they are expanded totally inconsequent. For <Location-3> the
%{NAME} and ${map:key} constructs were not expanded (ok, perhaps not really a
%major drawback) and for <Location-1> the ${map:key} construct was not
%expanded while for <Location-2> all are expanded. At least the missing
${map:key} expansion for <Location-1> is horrible because this way we
unnesessarily restricted the usefulness of RewriteCond dramatically.

Perhaps I should add more source comments to mod_rewrite.c
to discover that it then can even can cook a cake now.... ;-)


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ap_execle() forgot to pass argv[0] to the program!


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the per-server config merging was also inconsistent and bogus.


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condition for filehandles (FILE *) but not for filenumbers. Here we have to
use -1 as the error indicator like open() does.


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constructs, thus no one noticed that it can be used to lookup the REMOTE_USER
variable (one of the mod_rewrite FAQs) even in per-server context.  One just
has to use %{LA-U:REMOTE_USER} instead of %{REMOTE_USER} there.  Notice that
%{REMOTE_USER} is also useful, but only for per-dir context.


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- remove trailing spaces on lines ([ \t]+$)
- break lines which still were over 79 chars
- typos


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RAND_MAX. Thanks to Ben Hyde <bhyde@gensym.com>.


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2 configuration. This is not built as part of the normal "_apacheX" or
"installX" builds.


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the @@ServerRoot@@ sequences in the configuration files with
the real install directory.

Also here is a test program, in test/, which calls the installer DLL
and can be used to debug it.


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one previously committed to devsite (it is identical).


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Unix derivates who doesn't accept the locking of pipes directly.

But we perhaps have another problem: According to FreeBSD's manpage and a hint
by the submitter of PR#1029 flock() has to be used on opened filedescriptors
which are _not_ duplicated via fork().  This currently is not the case...

Submitted by: Ralf S. Engelschall
Reviewed by: Ralf S. Engelschall, Jim Jagielski


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in preference to the compiled in default. Any -d command line flag
will override the registry value. Apache -i sets the serverroot key
in the registry.

Reviewed by:  (concept only) Martin Kraemer, Jim Jagielski, Ken Coar


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defined for use by the core: ap_registry_get_server_root() and
ap_registry_set_server_root(). The key name used for Apache is defined in
registry.c if it needs changing...

Reviewed by:  (concept only) Martin Kraemer, Jim Jagielski, Ken Coar


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unified mod_so. The required dynamic loading functions are abstracted
in os/{win32,unix}/os.h to these manifest constants:

  os_dl_module_handle_type    type of handle returned by os_dl_load
  os_dl_load(l)               load a file
  os_dl_unload(l)             unload a file
  os_dl_sym(h,s)              find address of a symbol
  os_dl_error()               get last os_dl_*() call error as a string

Reviewed by:	Randy Terbush and Martin Kraemer (untested)


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contain because a lot of Unix derivates allow more then [a-zA-Z0-9]. We now
treat anything between ^/~ and  the next slash or end of URL as the username
because this does not hurt us. We always expand only after we have
successfully resolved the cut out name via /etc/passwd.


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patch because it would have required proper quoting to work right.

While I was in there I removed the need for the cmd->info cast, and cleaned
up a few other things.

PR:		1825
Submitted by:	Ronald Tschalaer <Ronald.Tschalaer@psi.ch>


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be used as a Reverse Proxy (where the backend servers are choosen via a `rnd'
map) and to allow mass virtual hosting without <VirtualHost> sections (where
you have to fix the case of server names when translating the Host-Header to a
directory structure).

Together with the comitted ProxyPassReverse directive we now have solved
two things the users have asked in the past:

1. The ability to use Apache as a full-featured Reverse Proxy
2. The ability to do mass virtual hosting without <VirtualHost> sections.

For both topics we should write stand-alone documents (perhaps inside
htdocs/manual/misc/) because they are not trivial to do, even when we now have
the functionality ;-)

Submitted by: Ralf S. Engelschall
Reviewed by: Dean Gaudet, Ralf S. Engelschall


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used as a full-featured Reverse Proxy in front of a backend
webserver cluster.

Submitted by: Ralf S. Engelschall
Reviewed by: Martin Kraemer, Ralf S. Engelschall


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Submitted by:	Alvaro Martinez Echevarria <alvaro@lander.es>
Reviewed by:	Martin Kraemer, Ian Kluft, Dean Gaudet


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mistake.  Clean up unistd.h usage elsewhere as well.


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