From 4839fe2e8201835a53ab6c75528a613e8bf25bfb Mon Sep 17 00:00:00 2001
From: Joshua Peek <josh@joshpeek.com>
Date: Tue, 14 Apr 2009 15:52:23 -0500
Subject: Move bundled rack into ActionDispatch

---
 .../action_dispatch/vendor/rack-1.0/rack/file.rb   | 88 ++++++++++++++++++++++
 1 file changed, 88 insertions(+)
 create mode 100644 actionpack/lib/action_dispatch/vendor/rack-1.0/rack/file.rb

(limited to 'actionpack/lib/action_dispatch/vendor/rack-1.0/rack/file.rb')

diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/file.rb b/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/file.rb
new file mode 100644
index 0000000000..fe62bd6b86
--- /dev/null
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/file.rb
@@ -0,0 +1,88 @@
+require 'time'
+require 'rack/utils'
+require 'rack/mime'
+
+module Rack
+  # Rack::File serves files below the +root+ given, according to the
+  # path info of the Rack request.
+  #
+  # Handlers can detect if bodies are a Rack::File, and use mechanisms
+  # like sendfile on the +path+.
+
+  class File
+    attr_accessor :root
+    attr_accessor :path
+
+    alias :to_path :path
+
+    def initialize(root)
+      @root = root
+    end
+
+    def call(env)
+      dup._call(env)
+    end
+
+    F = ::File
+
+    def _call(env)
+      @path_info = Utils.unescape(env["PATH_INFO"])
+      return forbidden  if @path_info.include? ".."
+
+      @path = F.join(@root, @path_info)
+
+      begin
+        if F.file?(@path) && F.readable?(@path)
+          serving
+        else
+          raise Errno::EPERM
+        end
+      rescue SystemCallError
+        not_found
+      end
+    end
+
+    def forbidden
+      body = "Forbidden\n"
+      [403, {"Content-Type" => "text/plain",
+             "Content-Length" => body.size.to_s},
+       [body]]
+    end
+
+    # NOTE:
+    #   We check via File::size? whether this file provides size info
+    #   via stat (e.g. /proc files often don't), otherwise we have to
+    #   figure it out by reading the whole file into memory. And while
+    #   we're at it we also use this as body then.
+
+    def serving
+      if size = F.size?(@path)
+        body = self
+      else
+        body = [F.read(@path)]
+        size = Utils.bytesize(body.first)
+      end
+
+      [200, {
+        "Last-Modified"  => F.mtime(@path).httpdate,
+        "Content-Type"   => Mime.mime_type(F.extname(@path), 'text/plain'),
+        "Content-Length" => size.to_s
+      }, body]
+    end
+
+    def not_found
+      body = "File not found: #{@path_info}\n"
+      [404, {"Content-Type" => "text/plain",
+         "Content-Length" => body.size.to_s},
+       [body]]
+    end
+
+    def each
+      F.open(@path, "rb") { |file|
+        while part = file.read(8192)
+          yield part
+        end
+      }
+    end
+  end
+end
-- 
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