DB URLs: Allow some special chars in password: '@' and '/'

In the opensips-cli.cfg config file, passwords may be given in both
un-escaped and escaped forms, e.g. 'opensips@rw' or 'opensips%%40rw'
(the double '%%' is needed to avoid a configparser error).

For STDIN-given passwords, they may also be given both un-escaped and
escaped, e.g. 'opensips@rw' or 'opensips%40rw'.

opensipscli/db.py

@@ -119,6 +119,12 @@ class osdbAccessDeniedError(osdbError):
  pass
 
 class DBURL(object):
+ @staticmethod
+ def escape_pass(pwd):
+ for sym in ('@', '/'): # special symbols accepted in password
+ pwd = pwd.replace(sym, '%'+hex(ord('@'))[2:])
+ return pwd
+
  def __init__(self, url):
  arr = url.split('://')
  self.drivername = arr[0].strip()
@@ -144,11 +150,11 @@ def __init__(self, url):
  arr = url.split('@')
  if len(arr) > 1:
  # handle user + password
- upass = arr[0].strip().split(':')
+ upass = '@'.join(arr[:-1]).strip().split(':')
  self.username = upass[0].strip()
  if len(upass) > 1:
- self.password = ":".join(upass[1:]).strip()
- url = arr[1].strip()
+ self.password = self.escape_pass(":".join(upass[1:]).strip())
+ url = arr[-1].strip()
  else:
  url = arr[0].strip()
 
@@ -942,7 +948,7 @@ def set_url_driver(url, driver):
  @staticmethod
  def set_url_password(url, password):
  url = make_url(url)
- url.password = password
+ url.password = DBURL.escape_pass(password)
  return str(url)