1 files changed, 93 insertions, 0 deletions
diff --git a/ruby_1_9_3/lib/webrick/httpauth/htgroup.rb b/ruby_1_9_3/lib/webrick/httpauth/htgroup.rb
new file mode 100644
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--- /dev/null
+++ b/ruby_1_9_3/lib/webrick/httpauth/htgroup.rb
@@ -0,0 +1,93 @@
+#
+# httpauth/htgroup.rb -- Apache compatible htgroup file
+#
+# Author: IPR -- Internet Programming with Ruby -- writers
+# Copyright (c) 2003 Internet Programming with Ruby writers. All rights
+# reserved.
+#
+# $IPR: htgroup.rb,v 1.1 2003/02/16 22:22:56 gotoyuzo Exp $
+
+require 'tempfile'
+
+module WEBrick
+  module HTTPAuth
+
+    ##
+    # Htgroup accesses apache-compatible group files.  Htgroup can be used to
+    # provide group-based authentication for users.  Currently Htgroup is not
+    # directly integrated with any authenticators in WEBrick.  For security,
+    # the path for a digest password database should be stored outside of the
+    # paths available to the HTTP server.
+    #
+    # Example:
+    #
+    #   htgroup = WEBrick::HTTPAuth::Htgroup.new 'my_group_file'
+    #   htgroup.add 'superheroes', %w[spiderman batman]
+    #
+    #   htgroup.members('superheroes').include? 'magneto' # => false
+
+    class Htgroup
+
+      ##
+      # Open a group database at +path+
+
+      def initialize(path)
+        @path = path
+        @mtime = Time.at(0)
+        @group = Hash.new
+        open(@path,"a").close unless File::exist?(@path)
+        reload
+      end
+
+      ##
+      # Reload groups from the database
+
+      def reload
+        if (mtime = File::mtime(@path)) > @mtime
+          @group.clear
+          open(@path){|io|
+            while line = io.gets
+              line.chomp!
+              group, members = line.split(/:\s*/)
+              @group[group] = members.split(/\s+/)
+            end
+          }
+          @mtime = mtime
+        end
+      end
+
+      ##
+      # Flush the group database.  If +output+ is given the database will be
+      # written there instead of to the original path.
+
+      def flush(output=nil)
+        output ||= @path
+        tmp = Tempfile.new("htgroup", File::dirname(output))
+        begin
+          @group.keys.sort.each{|group|
+            tmp.puts(format("%s: %s", group, self.members(group).join(" ")))
+          }
+          tmp.close
+          File::rename(tmp.path, output)
+        rescue
+          tmp.close(true)
+        end
+      end
+
+      ##
+      # Retrieve the list of members from +group+
+
+      def members(group)
+        reload
+        @group[group] || []
+      end
+
+      ##
+      # Add an Array of +members+ to +group+
+
+      def add(group, members)
+        @group[group] = members(group) | members
+      end
+    end
+  end
+end