Escape zone names

Support zones containing slashes in their name by urlencoding the zone
name added to the API URL.

Signed-off-by: Georg Pfuetzenreuter <mail@georg-pfuetzenreuter.net>

README.md

@@ -1,7 +1,13 @@
+# pdns-genrev
+
 Tool to generate PTR records in reverse zones based off A/AAAA records in forward zones.
 
+## Configuration
+
 Requires the following environment variables to be set:
 
 `GENREV_KEY` - the API key defined in the PowerDNS configuration
+
 `GENREV_URL` - URL to the PowerDNS webserver, without a path (for example `http://[::1]:8081`)
+
 `GENREV_ZONES` - comma separated list of forward zones to scan

pdns-genrev.py

@@ -45,7 +45,9 @@ def _get(path):
 def _iterate_zone(zone, types, only_records=False):
   result = {}
   records = []
-  this_zone = _get(f'zones/{zone}')
+
+  escapedzone = requests.utils.quote(zone, safe='')
+  this_zone = _get(f'zones/{escapedzone}')
 
   for rrset in this_zone['rrsets']:
     if rrset['type'] in types: