2 # Copyright (c) 2014, Ralf Jung <post@ralfj.de>
5 # Redistribution and use in source and binary forms, with or without
6 # modification, are permitted provided that the following conditions are met:
8 # 1. Redistributions of source code must retain the above copyright notice, this
9 # list of conditions and the following disclaimer.
10 # 2. Redistributions in binary form must reproduce the above copyright notice,
11 # this list of conditions and the following disclaimer in the documentation
12 # and/or other materials provided with the distribution.
14 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
15 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
16 # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
17 # DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
18 # ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
19 # (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
20 # LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
21 # ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
23 # SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 import cgi, os, sys, subprocess
26 form = cgi.FieldStorage(keep_blank_values=True)
29 print("Content-Type: text/plain")
33 if "password" not in form or "domain" not in form or ("ip" not in form and "ipv6" not in form):
34 print("Mandatory argument missing: You must supply all of 'password', 'domain' and at least either 'ip' or 'ipv6'")
37 domain = form.getfirst("domain")
38 password = form.getfirst("password")
39 ip = form.getfirst("ip")
40 ipv6 = form.getfirst("ipv6")
41 assert domain is not None and password is not None
42 assert ip is not None or ipv6 is not None
45 args = ["/var/lib/bind/dyn-nsupdate", "--domain", domain, "--password", password]
47 args += ["--ipv4", ip]
49 args += ["--ipv6", ipv6]
50 p = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
51 (stdout, stderr) = p.communicate()
54 if p.returncode or stderr or stdout:
56 print("There was an error while updating the DNS: Return code %d" % p.returncode)
57 if stdout: print(stdout)
58 if stderr: print(stderr)