[enh] add safesearch functionality

2 = strict
1 = moderate
0 = none

searx/engines/bing_images.py

@@ -21,12 +21,17 @@ import re
 # engine dependent config
 categories = ['images']
 paging = True
+safesearch = True
 
 # search-url
 base_url = 'https://www.bing.com/'
 search_string = 'images/search?{query}&count=10&first={offset}'
 thumb_url = "http://ts1.mm.bing.net/th?id={ihk}"
 
+# safesearch definitions
+safesearch_types = {2: 'STRICT',
+                    1: 'DEMOTE',
+                    0: 'OFF'}
 
 # do search-request
 def request(query, params):
@@ -43,7 +48,8 @@ def request(query, params):
         offset=offset)
 
     params['cookies']['SRCHHPGUSR'] = \
-        'NEWWND=0&NRSLT=-1&SRCHLANG=' + language.split('-')[0]
+        'NEWWND=0&NRSLT=-1&SRCHLANG=' + language.split('-')[0] +\
+        '&ADLT=' + safesearch_types.get(params['safesearch'], 'DEMOTE')
 
     params['url'] = base_url + search_path
 

searx/engines/blekko_images.py

@@ -14,11 +14,16 @@ from urllib import urlencode
 # engine dependent config
 categories = ['images']
 paging = True
+safesearch = True
 
 # search-url
 base_url = 'https://blekko.com'
 search_url = '/api/images?{query}&c={c}'
 
+# safesearch definitions
+safesearch_types = {2: '1',
+                    1: '',
+                    0: '0'}
 
 # do search-request
 def request(query, params):
@@ -31,6 +36,12 @@ def request(query, params):
     if params['pageno'] != 1:
         params['url'] += '&page={pageno}'.format(pageno=(params['pageno']-1))
 
+    # let Blekko know we wan't have profiling
+    params['cookies']['tag_lesslogging'] = '1'
+
+    # parse safesearch argument
+    params['cookies']['safesearch'] = safesearch_types.get(params['safesearch'], '')
+
     return params