From 3b9bf64130df2512d058d841341d9a082493141e Mon Sep 17 00:00:00 2001
From: David Heinemeier Hansson <david@loudthinking.com>
Date: Mon, 18 Apr 2005 15:43:07 +0000
Subject: [PATCH] Added support for web servers that use PATH_INFO instead of
 REQUEST_URI like IIS #1014 [BradG/Nicholas Seckar]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@1211 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
---
 actionpack/CHANGELOG                          |  2 +
 .../lib/action_controller/cgi_process.rb      |  6 ++-
 actionpack/lib/action_controller/request.rb   | 12 ++++-
 actionpack/test/controller/request_test.rb    | 45 ++++++++++++++++++-
 4 files changed, 61 insertions(+), 4 deletions(-)

diff --git a/actionpack/CHANGELOG b/actionpack/CHANGELOG
index f4b2327ec0..511e6a2a89 100644
--- a/actionpack/CHANGELOG
+++ b/actionpack/CHANGELOG
@@ -1,5 +1,7 @@
 *SVN*
 
+* Added support for web servers that use PATH_INFO instead of REQUEST_URI like IIS #1014 [BradG/Nicholas Seckar]
+
 * Added graceful handling of PUT, DELETE, and OPTIONS requests for a complete coverage of REST functionality #1136 [joshknowles@gmail.com]
 
 * Fixed that you can now pass an alternative :href option to link_to_function/remote in order to point to somewhere other than # if the javascript fails or is turned off. You can do the same with form_remote_tag by passing in :action. #1113 [Sam Stephenson]
diff --git a/actionpack/lib/action_controller/cgi_process.rb b/actionpack/lib/action_controller/cgi_process.rb
index 4e3a1d270c..fb46c6d353 100644
--- a/actionpack/lib/action_controller/cgi_process.rb
+++ b/actionpack/lib/action_controller/cgi_process.rb
@@ -48,7 +48,11 @@ module ActionController #:nodoc:
 
     def query_string
       return @cgi.query_string unless @cgi.query_string.nil? || @cgi.query_string.empty?
-      parts = env['REQUEST_URI'].split('?')
+      unless env['REQUEST_URI'].nil?
+        parts = env['REQUEST_URI'].split('?')
+      else
+        return env['QUERY_STRING'] || ''
+      end      
       parts.shift
       return parts.join('?')
     end
diff --git a/actionpack/lib/action_controller/request.rb b/actionpack/lib/action_controller/request.rb
index 032b19d6eb..f16a109cc7 100755
--- a/actionpack/lib/action_controller/request.rb
+++ b/actionpack/lib/action_controller/request.rb
@@ -74,8 +74,16 @@ module ActionController
     end
     
     def request_uri
-      (%r{^\w+\://[^/]+(/.*|$)$} =~ env['REQUEST_URI']) ? $1 : env['REQUEST_URI'] # Remove domain, which webrick puts into the request_uri.
-    end
+      unless env['REQUEST_URI'].nil?
+        (%r{^\w+\://[^/]+(/.*|$)$} =~ env['REQUEST_URI']) ? $1 : env['REQUEST_URI'] # Remove domain, which webrick puts into the request_uri.
+      else  # REQUEST_URI is blank under IIS - get this from PATH_INFO and SCRIPT_NAME
+        script_filename = env["SCRIPT_NAME"].to_s.match(%r{[^/]+$})
+        request_uri = env["PATH_INFO"]
+        request_uri.sub!(/#{script_filename}\//, '') unless script_filename.nil?
+        request_uri += '?' + env["QUERY_STRING"] unless env["QUERY_STRING"].nil? || env["QUERY_STRING"].empty?
+        return request_uri
+      end
+     end
 
     def protocol
       env["HTTPS"] == "on" ? 'https://' : 'http://'
diff --git a/actionpack/test/controller/request_test.rb b/actionpack/test/controller/request_test.rb
index 09c1dd7ce3..372d5929fa 100644
--- a/actionpack/test/controller/request_test.rb
+++ b/actionpack/test/controller/request_test.rb
@@ -83,7 +83,50 @@ class RequestTest < Test::Unit::TestCase
     @request.set_REQUEST_URI "/collaboration/hieraki/books/edit/2"
     @request.env['SCRIPT_NAME'] = "/collaboration/hieraki/dispatch.cgi"
     assert_equal "/collaboration/hieraki/books/edit/2", @request.request_uri
-    assert_equal "/books/edit/2", @request.path    
+    assert_equal "/books/edit/2", @request.path
+  
+    # The following tests are for when REQUEST_URI is not supplied (as in IIS)
+    @request.set_REQUEST_URI nil
+    @request.env['PATH_INFO'] = "/path/of/some/uri?mapped=1"
+    @request.env['SCRIPT_NAME'] = nil #"/path/dispatch.rb"
+    assert_equal "/path/of/some/uri?mapped=1", @request.request_uri
+    assert_equal "/path/of/some/uri", @request.path
+
+    @request.env['PATH_INFO'] = "/path/of/some/uri?mapped=1"
+    @request.env['SCRIPT_NAME'] = "/path/dispatch.rb"
+    assert_equal "/path/of/some/uri?mapped=1", @request.request_uri
+    assert_equal "/of/some/uri", @request.path
+
+    @request.env['PATH_INFO'] = "/path/of/some/uri"
+    @request.env['SCRIPT_NAME'] = nil
+    assert_equal "/path/of/some/uri", @request.request_uri
+    assert_equal "/path/of/some/uri", @request.path
+
+    @request.env['PATH_INFO'] = "/"
+    assert_equal "/", @request.request_uri
+    assert_equal "/", @request.path
+
+    @request.env['PATH_INFO'] = "/?m=b"
+    assert_equal "/?m=b", @request.request_uri
+    assert_equal "/", @request.path
+    
+    @request.env['PATH_INFO'] = "/"
+    @request.env['SCRIPT_NAME'] = "/dispatch.cgi"
+    assert_equal "/", @request.request_uri
+    assert_equal "/", @request.path    
+
+    @request.env['PATH_INFO'] = "/hieraki/"
+    @request.env['SCRIPT_NAME'] = "/hieraki/dispatch.cgi"
+    assert_equal "/hieraki/", @request.request_uri
+    assert_equal "/", @request.path    
+
+    # This test ensures that Rails uses REQUEST_URI over PATH_INFO
+    @request.env['REQUEST_URI'] = "/some/path"
+    @request.env['PATH_INFO'] = "/another/path"
+    @request.env['SCRIPT_NAME'] = "/dispatch.cgi"
+    assert_equal "/some/path", @request.request_uri
+    assert_equal "/some/path", @request.path
+
 
   end