[PATCH/RFC] gitweb: allow configurations that change with each request

gitolite's contrib/gitweb/gitweb.conf includes:

	$ENV{GL_USER} = $cgi->remote_user || "gitweb";

which is useful for setups where a user has to be authenticated
to access certain repos.  Perhaps other typical configurations
change per session in other ways, too.

v1.7.2-rc2~6 (gitweb: Move evaluate_gitweb_config out of run_request,
2010-07-05) broke such configurations for a speedup, by loading
the configuration once per FastCGI process.

Probably in the end there should be a way to specify in the
configuration whether a particular installation wants the speedup or
the flexibility.  But for now it is easier to just undo the relevant
change.

This partially reverts commit 869d58813b24c74e84c9388041eafcef40cb51e4.

Reported-by: Julio Lajara <redacted>
Analysis-by: Jakub Narebski [off-list ref]
Signed-off-by: Jonathan Nieder <redacted>
---
Jakub Narebski wrote:

I wonder if it would be possible to 
re-enable this feature (which I think is needed to be able to use
$cgi->remote_user) but without having all pay the [slight] performance
penalty of including (and I think parsing) config file once per each
request.

I dunno.  Maybe this would be a good place to start.

 gitweb/gitweb.perl |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index e0e9532..300c4b1 100755
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl

@@ -1060,8 +1060,12 @@ sub run_request {
 	reset_timer();
 
 	evaluate_uri();
+	evaluate_gitweb_config();
 	check_loadavg();
 
+	# $projectroot and $projects_list might be set in gitweb config file
+	$projects_list ||= $projectroot;
+
 	evaluate_query_params();
 	evaluate_path_info();
 	evaluate_and_validate_params();

@@ -1109,12 +1113,8 @@ sub evaluate_argv {
 
 sub run {
 	evaluate_argv();
-	evaluate_gitweb_config();
 	evaluate_git_version();
 
-	# $projectroot and $projects_list might be set in gitweb config file
-	$projects_list ||= $projectroot;
-
 	$pre_listen_hook->()
 		if $pre_listen_hook;
 

-- 
1.7.2.1.544.ga752d.dirty