added sync mode for local to swift, added delete function in utility, added script to remove all 0bytes directories, added script to delete large files without manifest

swift_generate_temp_url.py

@@ -0,0 +1,44 @@
+__author__ = 'xgiovio'
+
+import authentication, swiftclient
+import hmac,sys
+from hashlib import sha1
+from time import time
+
+def launch(secretkey,set_secretkey,create_temp_url,duration_in_seconds,objectpath,fail_tries):
+
+    swift_conn = authentication.set_authentication ()
+    storageurl,_ = swift_conn.get_auth()
+    #print(storageurl)
+    for fail_tries_counter in range (fail_tries) :
+        try:
+            if set_secretkey:
+                swift_conn.post_account({"x-account-meta-temp-url-key":secretkey})
+            else:
+                headers = swift_conn.head_account()
+                secretkey = headers['x-account-meta-temp-url-key']
+        except Exception as e:
+            print("Exception during setting / getting the secret key.")
+            print(e)
+            time.sleep(1)
+            if fail_tries_counter == fail_tries - 1 :
+                print("Maximum tries reached. Exiting.")
+                sys.exit(-1)
+            else:
+                swift_conn = authentication.set_authentication ()
+        else :
+            break
+    print("Secretkey " + secretkey)
+    if create_temp_url :
+        storageurl = storageurl.replace("https://","")
+        method = 'GET'
+        expires = int(time() + duration_in_seconds)
+        path = "/" + storageurl.split("/")[1] + "/" + storageurl.split("/")[2] + "/" + objectpath
+        key = secretkey
+        hmac_body = '%s\n%s\n%s' % (method, expires, path)
+        sig = hmac.new(key.encode("utf-8"), hmac_body.encode("utf-8"), sha1).hexdigest()
+        s = 'https://{host}{path}?temp_url_sig={sig}&temp_url_expires={expires}'
+        url = s.format(host=storageurl.split("/")[0], path=path, sig=sig, expires=expires)
+
+        print(url)
+