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make the DNS API a little clearer

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This commit is contained in:
Joshua Tauberer 2014-09-21 13:15:36 +00:00
parent 05510f25a5
commit 1637153566
2 changed files with 11 additions and 9 deletions
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3
management/daemon.py
View file

@ -184,12 +184,11 @@ def dns_set_record(qname, rtype="A", value=None):
# Get the value from the URL, then the POST parameters, or if it is not set then
# use the remote IP address of the request --- makes dynamic DNS easy. To clear a
# value, '' must be explicitly passed.
print(request.environ)
if value is None:
value = request.form.get("value")
if value is None:
value = request.environ.get("HTTP_X_FORWARDED_FOR") # normally REMOTE_ADDR but we're behind nginx as a reverse proxy
if value == '':
if value == '' or value == '__delete__':
# request deletion
value = None
if set_custom_dns_record(qname, rtype, value, env):

17
management/templates/system-dns.html
View file

@ -37,17 +37,19 @@
<p>Send a POST request like this:</p>
<pre>curl -d "" --user {email}:{password} https://{{hostname}}/admin/dns/set/{qname}[/{rtype}[/{value}]]</pre>
<pre>curl -d "" --user {email}:{password} https://{{hostname}}/admin/dns/set/<b>qname</b>[/<b>rtype</b>[/<b>value</b>]]</pre>
<table class="table">
<thead><th>Parameter</th> <th>Value</th></thead>
<tr><td>email</td> <td>The email address of any administrative user here.</td></tr>
<tr><td>password</td> <td>That user&rsquo;s password.</td></tr>
<tr><td>qname</td> <td>The fully qualified domain name for the record you are trying to set.</td></tr>
<tr><td>rtype</td> <td>Optional. The resource type: <code>A</code> (an IPv4 address; the default), <code>AAAA</code> (an IPv6 address), <code>TXT</code> (a text string), or <code>CNAME</code> (an alias, which is a fully qualified domain name).</td></tr>
<tr><td>value</td> <td>Optional-ish. The new record&rsquo;s value. If not provided, the IPv4 address of the remote host is used &mdash; this is handy for dynamic DNS! You can also set this in a POST parameter. To delete a record, pass &ldquo;value=&rdquo; in the POST body.</td></tr>
<tr><td>rtype</td> <td>The resource type. <code>A</code> if omitted. Possible values: <code>A</code> (an IPv4 address), <code>AAAA</code> (an IPv6 address), <code>TXT</code> (a text string), or <code>CNAME</code> (an alias, which is a fully qualified domain name).</td></tr>
<tr><td>value</td> <td>The new record&rsquo;s value. If omitted, the IPv4 address of the remote host is used. This is handy for dynamic DNS! To delete a record, use &ldquo;__delete__&rdquo;.</td></tr>
</table>
<p style="margin-top: 1em">Note that <code>-d ""</code> is merely to ensure curl sends a POST request. You do not need to put anything inside the quotes. You can also pass the value using typical form encoding in the POST body.</p>
<h4>Examples:</h4>
<pre># sets laptop.mydomain.com to point to the IP address of the machine you are executing curl on
@ -56,11 +58,12 @@ curl -d "" --user me@mydomain.com:###### https://{{hostname}}/admin/dns/set/lapt
# sets an alias
curl -d "" --user me@mydomain.com:###### https://{{hostname}}/admin/dns/set/foo.mydomain.com/cname/bar.mydomain.com
# sets a TXT record
curl -d "value=something%20here" --user me@mydomain.com:###### https://{{hostname}}/admin/dns/set/foo.mydomain.com/txt
# clears the alias
curl -d "" --user me@mydomain.com:###### https://{{hostname}}/admin/dns/set/bar.mydomain.com/cname/__delete__
# clears the TXT record
curl -d "value=" --user me@mydomain.com:###### https://{{hostname}}/admin/dns/set/foo.mydomain.com/txt</pre>
# sets a TXT record using the alternate value syntax
curl -d "value=something%20here" --user me@mydomain.com:###### https://{{hostname}}/admin/dns/set/foo.mydomain.com/txt
</pre>
<h3>External DNS</h3>