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Dynamic DNS: Allow overriding http method in request parameter

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I own a DSL router that allows me to specify a custom url for
dynamic dns updates, but which can only do GET requests.

In order to be able to update addresses on a mailinabox server, I added
the option to emulate the required request method bu specifying it in a
request parameter.
This commit is contained in:
qyz 2018-10-17 13:27:17 +00:00
parent dd7a2aa8a6
commit 893a7274d2
1 changed files with 8 additions and 6 deletions
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14
management/daemon.py
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@ -277,13 +277,15 @@ def dns_set_record(qname, rtype="A"):
# Read the record value from the request BODY, which must be
# ASCII-only. Not used with GET.
value = request.stream.read().decode("ascii", "ignore").strip()
value = request.args.get("override_value", request.stream.read().decode("ascii", "ignore").strip())
if request.method == "GET":
method = request.args.get("override_method", request.method)
if method == "GET":
# Get the existing records matching the qname and rtype.
return dns_get_records(qname, rtype)
elif request.method in ("POST", "PUT"):
elif method in ("POST", "PUT"):
# There is a default value for A/AAAA records.
if rtype in ("A", "AAAA") and value == "":
value = request.environ.get("HTTP_X_FORWARDED_FOR") # normally REMOTE_ADDR but we're behind nginx as a reverse proxy
@ -292,17 +294,17 @@ def dns_set_record(qname, rtype="A"):
if value == '':
return ("No value for the record provided.", 400)
if request.method == "POST":
if method == "POST":
# Add a new record (in addition to any existing records
# for this qname-rtype pair).
action = "add"
elif request.method == "PUT":
elif method == "PUT":
# In REST, PUT is supposed to be idempotent, so we'll
# make this action set (replace all records for this
# qname-rtype pair) rather than add (add a new record).
action = "set"
elif request.method == "DELETE":
elif method == "DELETE":
if value == '':
# Delete all records for this qname-type pair.
value = None