Added imagerandomizer plugin

plugins/imagerandomizer.py

@@ -0,0 +1,57 @@
+# Copyright (c) 2014-2016 Marcello Salvati
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3 of the
+# License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+# USA
+#
+
+import random
+import os
+from plugins.plugin import Plugin
+
+class ImageRandomizer(Plugin):
+    name       = "ImageRandomizer"
+    optname    = "imgrand"
+    desc       = 'Replaces images with a random one from a specified directory'
+    version    = "0.1"
+
+    def initialize(self, options):
+        self.options = options
+        self.img_dir = options.img_dir
+
+    def responseheaders(self, response, request):
+        '''Kill the image skipping that's in place for speed reasons'''
+        if request.isImageRequest:
+            request.isImageRequest = False
+            request.isImage = True
+            self.imageType = response.headers['content-type'].split('/')[1].upper()
+
+    def response(self, response, request, data):
+        try:
+            isImage = getattr(request, 'isImage')
+        except AttributeError:
+            isImage = False
+
+        if isImage:
+            try:
+                img = random.choice(os.listdir(self.options.img_dir))
+                with open(os.path.join(self.options.img_dir, img), 'rb') as img_file:
+                    data = img_file.read()
+                    self.clientlog.info("Replaced image with {}".format(img), extra=request.clientInfo)
+                    return {'response': response, 'request': request, 'data': data}
+            except Exception as e:
+                self.clientlog.info("Error: {}".format(e), extra=request.clientInfo)
+
+    def options(self, options):
+        options.add_argument("--img-dir", type=str, metavar="DIRECTORY", help="Directory with images")