Add testing file with updated gitignore for jpgs

.gitignore

@@ -89,4 +89,7 @@ ENV/
 .ropeproject
 
 # Google API Key
-ground_station/resources/core/key
+ground_station/resources/core/key
+
+# Map Images
+*.jpg

ground_station/resources/core/mapping.py

@@ -5,7 +5,7 @@ ReWritten by Chris Pham
 Copyright OSURC, orginal code from GooMPy by Alec Singer and Simon D. Levy
 
 This code is free software: you can redistribute it and/or modify
-it under the terms of the GNU Lesser General Public License as 
+it under the terms of the GNU Lesser General Public License as
 published by the Free Software Foundation, either version 3 of the 
 License, or (at your option) any later version.
 This code is distributed in the hope that it will be useful,     
@@ -27,15 +27,12 @@ from io import StringIO, BytesIO
 import os
 import time
 import PIL.Image
+import signing
 
 #####################################
 # Constants
 #####################################
 _KEYS = []
-file_pointer = open('key', 'w')
-for i in file_pointer:
-    _KEYS.append(file_pointer.readline().rstrip())
-file_pointer.close()
 
 # Number of pixels in half the earth's circumference at zoom = 21
 _EARTHPIX = 268435456
@@ -48,6 +45,13 @@ _GRABRATE = 4
 # Pixel Radius of Earth for calculations
 _PIXRAD = _EARTHPIX / math.pi
 
+file_pointer = open('key', 'r')
+for i in file_pointer:
+    _KEYS.append(i.rstrip())
+file_pointer.close()
+
+print _KEYS
+
 
 class GMapsStitcher(object):
     def __init__(self, width, height,
@@ -79,11 +83,11 @@ class GMapsStitcher(object):
         # Make the url string for polling
         # GET request header gets appended to the string
         urlbase = 'https://maps.googleapis.com/maps/api/staticmap?'
-        urlbase += 'center=%f%f&zoom=%d&maptype=%s&size=%dx%d&format=jpg&key=%s&signature=%s'
+        urlbase += 'center=%f,%f&zoom=%d&maptype=%s&size=%dx%d&format=jpg&key=%s'
 
         # Fill the formatting
-        specs = latitude, longitude, self.zoom, self.maptype, _TILESIZE, _KEYS[0], _KEYS[1]
-        filename = 'Resources/Maps/' + ('%f_%f_%d_%s_%d_%d_%s_%s' % specs) + '.jpg'
+        specs = latitude, longitude, self.zoom, self.maptype, _TILESIZE, _TILESIZE, _KEYS[0]
+        filename = 'Resources/Maps/' + ('%f_%f_%d_%s_%d_%d_%s' % specs) + '.jpg'
 
         # Tile Image object
         tile_object = None
@@ -95,8 +99,10 @@ class GMapsStitcher(object):
         else:
             # make the url
             url = urlbase % specs
-
-            result = urllib2.Request(url).read()
+            print url
+            url = signing.sign_url(url, _KEYS[1])
+            print url
+            result = urllib2.urlopen(urllib2.Request(url)).read()
             tile_object = PIL.Image.open(BytesIO(result))
             if not os.path.exists('Resources/Maps'):
                 os.mkdir('Resources/Maps')
@@ -117,14 +123,14 @@ class GMapsStitcher(object):
         temp = math.atan(math.exp(((lat_pixels + degree) - _EARTHPIX))/ _PIXRAD)
         return math.degrees(math.pi / 2 - 2 * temp)
 
-    def fetch_tiles(self,):
+    def fetch_tiles(self):
         # cap floats to precision amount
         self.latitude = self._fast_round(self.latitude, _DEGREE_PRECISION)
         self.longitude = self._fast_round(self.longitude, _DEGREE_PRECISION)
 
         # number of tiles required to go from center latitude to desired radius in meters
         if self.radius_meters is not None:
-            self.num_tiles = int(round(2*self._pixels_to_meters / (_TILESIZE / 2. / self.radius_meters)))
+            self.num_tiles = int(round(2*self._pixels_to_meters() / (_TILESIZE / 2. / self.radius_meters)))
 
         lon_pixels = _EARTHPIX + self.longitude * math.radians(_PIXRAD)
 

ground_station/resources/core/mappingtest.py

@@ -0,0 +1,5 @@
+import mapping
+
+obj = mapping.GMapsStitcher(10000, 10000, 44.57078, -123.275998, 21, 'terrain', 200)
+
+obj.fetch_tiles()

ground_station/resources/core/signing.py

@@ -0,0 +1,53 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+""" Signs a URL using a URL signing secret """
+
+import hashlib
+import hmac
+import base64
+import urlparse
+
+def sign_url(input_url=None, secret=None):
+  """ Sign a request URL with a URL signing secret.
+
+      Usage:
+      from urlsigner import sign_url
+
+      signed_url = sign_url(input_url=my_url, secret=SECRET)
+
+      Args:
+      input_url - The URL to sign
+      secret    - Your URL signing secret
+
+      Returns:
+      The signed request URL
+  """
+
+  if not input_url or not secret:
+    raise Exception("Both input_url and secret are required")
+
+  url = urlparse.urlparse(input_url)
+
+  # We only need to sign the path+query part of the string
+  url_to_sign = url.path + "?" + url.query
+
+  # Decode the private key into its binary format
+  # We need to decode the URL-encoded private key
+  decoded_key = base64.urlsafe_b64decode(secret)
+
+  # Create a signature using the private key and the URL-encoded
+  # string using HMAC SHA1. This signature will be binary.
+  signature = hmac.new(decoded_key, url_to_sign, hashlib.sha1)
+
+  # Encode the binary signature into base64 for use within a URL
+  encoded_signature = base64.urlsafe_b64encode(signature.digest())
+
+  original_url = url.scheme + "://" + url.netloc + url.path + "?" + url.query
+
+  # Return signed URL
+  return original_url + "&signature=" + encoded_signature
+
+if __name__ == "__main__":
+  input_url = raw_input("URL to Sign: ")
+  secret = raw_input("URL signing secret: ")
+  print "Signed URL: " + sign_url(input_url, secret)