fixes #194

app/logical/downloads/file.rb

@@ -31,25 +31,27 @@ module Downloads
       fix_image_board_sources
     end
     
+    def url
+      URI.parse(source)
+    end
+  
     def http_get_streaming(options = {})
       max_size = options[:max_size] || Danbooru.config.max_file_size
       max_size = nil if max_size == 0 # unlimited
       limit = 4
 
       while true
-        url = URI.parse(source)
-
         unless url.is_a?(URI::HTTP)
           raise Error.new("URL must be HTTP")
         end
 
+        headers = {
+          "User-Agent" => "#{Danbooru.config.safe_app_name}/#{Danbooru.config.version}"
+        }
+        @source, headers = before_download(source, headers)
+        
         Net::HTTP.start(url.host, url.port) do |http|
           http.read_timeout = 10
-          headers = {
-            "User-Agent" => "#{Danbooru.config.safe_app_name}/#{Danbooru.config.version}"
-          }
-          @source, headers = before_download(@source, headers)
-          url = URI.parse(source)
           http.request_get(url.request_uri, headers) do |res|
             case res
             when Net::HTTPSuccess then

app/logical/downloads/strategies/pixiv.rb

@@ -4,6 +4,7 @@ module Downloads
       def rewrite(url, headers)
         if url =~ /https?:\/\/(?:\w+\.)?pixiv\.net/
           url, headers = rewrite_headers(url, headers)
+          url, headers = rewrite_html_pages(url, headers)
           url, headers = rewrite_small_images(url, headers)
           url, headers = rewrite_small_manga_pages(url, headers)
         end
@@ -17,6 +18,18 @@ module Downloads
         return [url, headers]
       end
       
+      def rewrite_html_pages(url, headers)
+        # example: http://www.pixiv.net/member_illust.php?mode=big&illust_id=23828655
+
+        if url =~ %r!illust_id=\d+!
+          source = ::Sources::Strategies::Pixiv.new(url)
+          source.get
+          return [source.image_url, headers]
+        else
+          return [url, headers]
+        end
+      end
+      
       def rewrite_small_images(url, headers)
         if url =~ %r!(/img/.+?/.+?)_m.+$!
           match = $1

test/unit/downloads/pixiv_test.rb

@@ -15,6 +15,20 @@ module Downloads
       end
     end
     
+    context "a download for a html page" do
+      setup do
+        @source = "http://www.pixiv.net/member_illust.php?mode=big&illust_id=23828655"
+        @source = "http://www.pixiv.net/member_illust.php?mode=big&illust_id=4348318"
+        @tempfile = Tempfile.new("danbooru-test")
+        @download = Downloads::File.new(@source, @tempfile.path)
+        @download.download!
+      end
+      
+      should "work" do
+        assert_equal(185778, ::File.size(@tempfile.path))
+      end
+    end
+    
     context "a download for a small image" do
       setup do
         @source = "http://img02.pixiv.net/img/wanwandoh/4348318_m.jpg"