Add punycode (IDN) support (#879)

2024-09-18 22:39:36 +00:00 · 2021-03-16 14:37:05 -04:00 · 2021-03-16 14:37:05 -04:00 · 46993e08c0
commit 46993e08c0
parent 4c19f95928
9 changed files with 78 additions and 28 deletions
--- a/README.md
+++ b/README.md
@ -18,6 +18,7 @@ A PowerDNS web interface with advanced features.
 - DynDNS 2 protocol support
 - Edit IPv6 PTRs using IPv6 addresses directly (no more editing of literal addresses!)
 - Limited API for manipulating zones and records
+- Full IDN/Punycode support

 ## Running PowerDNS-Admin
 There are several ways to run PowerDNS-Admin. The easiest way is to use Docker.
--- a/powerdnsadmin/init.py
+++ b/powerdnsadmin/init.py
@ -102,6 +102,7 @@ def create_app(config=None):
        'email_to_gravatar_url'] = utils.email_to_gravatar_url
    app.jinja_env.filters[
        'display_setting_state'] = utils.display_setting_state
+    app.jinja_env.filters['pretty_domain_name'] = utils.pretty_domain_name

    # Register context proccessors
    from .models.setting import Setting
--- a/powerdnsadmin/lib/utils.py
+++ b/powerdnsadmin/lib/utils.py
@ -8,6 +8,7 @@ import ipaddress
 from collections.abc import Iterable
 from distutils.version import StrictVersion
 from urllib.parse import urlparse
+from datetime import datetime, timedelta


 def auth_from_url(url):
@ -228,3 +229,22 @@ class customBoxes:
        "inaddrarpa": ("in-addr", "%.in-addr.arpa")
    }
    order = ["reverse", "ip6arpa", "inaddrarpa"]
+
+def pretty_domain_name(value):
+    """
+    Display domain name in original format.
+    If it is IDN domain (Punycode starts with xn--), do the
+    idna decoding.
+    Note that any part of the domain name can be individually punycoded
+    """
+    if isinstance(value, str):
+        if value.startswith('xn--') \
+        or value.find('.xn--'):
+            try:
+                return value.encode().decode('idna')
+            except:
+                raise Exception("Cannot decode IDN domain")
+        else:
+            return value
+    else:
+        raise Exception("Require the Punycode in string format")
--- a/powerdnsadmin/models/record.py
+++ b/powerdnsadmin/models/record.py
@ -162,6 +162,15 @@ class Record(object):
        for record in submitted_records:
            # Format the record name
            #
+            # Translate record name into punycode (IDN) as that's the only way
+            # to convey non-ascii records to the dns server
+            record['record_name'] = record['record_name'].encode('idna').decode()
+            #TODO: error handling
+            # If the record is an alias (CNAME), we will also make sure that
+            # the target domain is properly converted to punycode (IDN)
+            if record["record_type"] == 'CNAME':
+                record['record_data'] = record['record_data'].encode('idna').decode()
+                #TODO: error handling
            # If it is ipv6 reverse zone and PRETTY_IPV6_PTR is enabled,
            # We convert ipv6 address back to reverse record format
            # before submitting to PDNS API.
--- a/powerdnsadmin/routes/api.py
+++ b/powerdnsadmin/routes/api.py
@ -272,7 +272,8 @@ def api_login_delete_zone(domain_name):
        if resp.status_code == 204:
            current_app.logger.debug("Request to powerdns API successful")

-            history = History(msg='Delete domain {0}'.format(domain_name),
+            history = History(msg='Delete domain {0}'.format(
+                pretty_domain_name(domain_name)),
                              detail='',
                              created_by=current_user.username)
            history.add()
--- a/powerdnsadmin/routes/domain.py
+++ b/powerdnsadmin/routes/domain.py
@ -8,6 +8,7 @@ from distutils.version import StrictVersion
 from flask import Blueprint, render_template, make_response, url_for, current_app, request, redirect, abort, jsonify, g, session
 from flask_login import login_required, current_user, login_manager

+from ..lib.utils import pretty_domain_name
 from ..lib.utils import pretty_json
 from ..decorators import can_create_domain, operator_role_required, can_access_domain, can_configure_dnssec
 from ..models.user import User, Anonymous
@ -149,6 +150,17 @@ def add():
                    msg="Please enter a valid domain name"), 400

            #TODO: Validate ip addresses input
+
+            # Encode domain name into punycode (IDN)
+            try:
+                domain_name = domain_name.encode('idna').decode()
+            except:
+                current_app.logger.error("Cannot encode the domain name {}".format(domain_name))
+                current_app.logger.debug(traceback.format_exc())
+                return render_template(
+                    'errors/400.html',
+                    msg="Please enter a valid domain name"), 400
+
            if domain_type == 'slave':
                if request.form.getlist('domain_master_address'):
                    domain_master_string = request.form.getlist(
@ -168,7 +180,8 @@ def add():
                           domain_master_ips=domain_master_ips,
                           account_name=account_name)
            if result['status'] == 'ok':
-                history = History(msg='Add domain {0}'.format(domain_name),
+                history = History(msg='Add domain {0}'.format(
+                    pretty_domain_name(domain_name)),
                                  detail=str({
                                      'domain_type': domain_type,
                                      'domain_master_ips': domain_master_ips,
@ -251,7 +264,8 @@ def delete(domain_name):
    if result['status'] == 'error':
        abort(500)

-    history = History(msg='Delete domain {0}'.format(domain_name),
+    history = History(msg='Delete domain {0}'.format(
+        pretty_domain_name(domain_name)),
                      created_by=current_user.username)
    history.add()

@ -294,7 +308,8 @@ def setting(domain_name):
        d.grant_privileges(new_user_ids)

        history = History(
-            msg='Change domain {0} access control'.format(domain_name),
+            msg='Change domain {0} access control'.format(
+                pretty_domain_name(domain_name)),
            detail=str({'user_has_access': new_user_list}),
            created_by=current_user.username)
        history.add()
@ -330,7 +345,8 @@ def change_type(domain_name):
                           kind=domain_type,
                           masters=domain_master_ips)
    if status['status'] == 'ok':
-        history = History(msg='Update type for domain {0}'.format(domain_name),
+        history = History(msg='Update type for domain {0}'.format(
+                pretty_domain_name(domain_name)),
                          detail=str({
                              "domain": domain_name,
                              "type": domain_type,
@ -362,7 +378,8 @@ def change_soa_edit_api(domain_name):
                                  soa_edit_api=new_setting)
    if status['status'] == 'ok':
        history = History(
-            msg='Update soa_edit_api for domain {0}'.format(domain_name),
+            msg='Update soa_edit_api for domain {0}'.format(
+                pretty_domain_name(domain_name)),
            detail=str({
                "domain": domain_name,
                "soa_edit_api": new_setting
@ -421,14 +438,14 @@ def record_apply(domain_name):
                    'status':
                    'error',
                    'msg':
-                    'Domain name {0} does not exist'.format(domain_name)
+                    'Domain name {0} does not exist'.format(pretty_domain_name(domain_name))
                }), 404)

        r = Record()
        result = r.apply(domain_name, submitted_record)
        if result['status'] == 'ok':
            history = History(
-                msg='Apply record changes to domain {0}'.format(domain_name),
+                msg='Apply record changes to domain {0}'.format(pretty_domain_name(domain_name)),
                detail=str(
                    json.dumps({
                        "domain": domain_name,
@ -440,7 +457,8 @@ def record_apply(domain_name):
            return make_response(jsonify(result), 200)
        else:
            history = History(
-                msg='Failed to apply record changes to domain {0}'.format(domain_name),
+                msg='Failed to apply record changes to domain {0}'.format(
+                    pretty_domain_name(domain_name)),
                detail=str(
                    json.dumps({
                        "domain": domain_name,
@ -566,7 +584,7 @@ def admin_setdomainsetting(domain_name):
                    if setting.set(new_value):
                        history = History(
                            msg='Setting {0} changed value to {1} for {2}'.
-                            format(new_setting, new_value, domain.name),
+                            format(new_setting, new_value, pretty_domain_name(domain_name)),
                            created_by=current_user.username)
                        history.add()
                        return make_response(
@ -585,7 +603,7 @@ def admin_setdomainsetting(domain_name):
                        history = History(
                            msg=
                            'New setting {0} with value {1} for {2} has been created'
-                            .format(new_setting, new_value, domain.name),
+                            .format(new_setting, new_value, pretty_domain_name(domain_name)),
                            created_by=current_user.username)
                        history.add()
                        return make_response(
--- a/powerdnsadmin/templates/dashboard_domain.html
+++ b/powerdnsadmin/templates/dashboard_domain.html
@ -1,5 +1,5 @@
 {% macro name(domain) %}
-  <a href="{{ url_for('domain.domain', domain_name=domain.name) }}"><strong>{{ domain.name }}</strong></a>
+  <a href="{{ url_for('domain.domain', domain_name=domain.name) }}"><strong>{{ domain.name | pretty_domain_name }}</strong></a>
 {% endmacro %}

 {% macro dnssec(domain) %}
@ -15,11 +15,11 @@
 {% endmacro %}

 {% macro serial(domain) %}
-    {% if domain.serial == 0 %}{{ domain.notified_serial }}{% else %}{{domain.serial}}{% endif %}
+    {% if domain.serial == 0 %}{{ domain.notified_serial }}{% else %}{{ domain.serial }}{% endif %}
 {% endmacro %}

 {% macro master(domain) %}
-    {% if domain.master == '[]'%}-{% else %}{{ domain.master|display_master_name }}{% endif %}
+    {% if domain.master == '[]'%}-{% else %}{{ domain.master | display_master_name }}{% endif %}
 {% endmacro %}

 {% macro account(domain) %}
--- a/powerdnsadmin/templates/domain.html
+++ b/powerdnsadmin/templates/domain.html
@ -1,16 +1,16 @@
 {% extends "base.html" %}
-{% block title %}<title>{{ domain.name }} - {{ SITE_NAME }}</title>{% endblock %}
+{% block title %}<title>{{ domain.name | pretty_domain_name }} - {{ SITE_NAME }}</title>{% endblock %}

 {% block dashboard_stat %}
 <section class="content-header">
    <h1>
-        Manage domain: <b>{{ domain.name }}</b>
+        Manage domain: <b>{{ domain.name | pretty_domain_name }}</b>
    </h1>
    <ol class="breadcrumb">
        <li><a href="{{ url_for('dashboard.dashboard') }}"><i
                class="fa fa-dashboard"></i> Home</a></li>
        <li>Domain</li>
-        <li class="active">{{ domain.name }}</li>
+        <li class="active">{{ domain.name | pretty_domain_name }}</li>
    </ol>
 </section>
 {% endblock %}
@ -52,7 +52,7 @@
                                {% for record in records %}
                                <tr class="odd row_record" id="{{ domain.name }}">
                                    <td>
-                                        {{ (record.name,domain.name)|display_record_name }}
+                                        {{ (record.name,domain.name) | display_record_name | pretty_domain_name }}
                                    </td>
                                    <td>
                                        {{ record.type }}
@ -64,7 +64,7 @@
                                        {{ record.ttl }}
                                    </td>
                                    <td>
-                                        {{ record.data }}
+                                        {{ record.data | pretty_domain_name }}
                                    </td>
                                    <td>
                                        {{ record.comment }}
@ -110,8 +110,8 @@
 {% block extrascripts %}
 <script>
    // superglobals
-    window.records_allow_edit = {{ editable_records|tojson }};
-    window.ttl_options = {{ ttl_options|tojson }};
+    window.records_allow_edit = {{ editable_records | tojson }};
+    window.ttl_options = {{ ttl_options | tojson }};
    window.nEditing = null;
    window.nNew = false;

@ -123,7 +123,7 @@
        "ordering" : true,
        "info" : true,
        "autoWidth" : false,
-        {% if SETTING.get('default_record_table_size')|string in ['5','15','20'] %}
+        {% if SETTING.get('default_record_table_size') | string in ['5','15','20'] %}
        "lengthMenu": [ [5, 15, 20, -1],
                        [5, 15, 20, "All"]],
        {% else %}
--- a/powerdnsadmin/templates/domain_setting.html
+++ b/powerdnsadmin/templates/domain_setting.html
@ -19,7 +19,7 @@
 {% endif %}
 <section class="content-header">
    <h1>
-        Manage domain <small>{{ domain.name }}</small>
+        Manage domain <small>{{ domain.name | pretty_domain_name }}</small>
    </h1>
    <ol class="breadcrumb">
        <li><a href="{{ url_for('dashboard.dashboard') }}"><i class="fa fa-dashboard"></i> Home</a></li>
@ -42,7 +42,7 @@
                        <div class="row">
                            <div class="col-xs-2">
                                <p>Users on the right have access to manage the records in
-                                    the {{ domain.name }} domain.</p>
+                                    the {{ domain.name | pretty_domain_name }} domain.</p>
                                <p>Click on users to move from between columns.</p>
                                <p>
                                    Users in <font style="color: red;">red</font> are Administrators
@ -94,7 +94,7 @@
                                    {% endfor %}
                                </select><br />
                                <button type="submit" class="btn btn-flat btn-primary" id="change_soa_edit_api">
-                                    <i class="fa fa-check"></i>&nbsp;Change account for {{ domain.name }}
+                                    <i class="fa fa-check"></i>&nbsp;Change account for {{ domain.name | pretty_domain_name }}
                                </button>
                            </form>
                        </div>
@ -173,7 +173,7 @@
                                placeholder="Enter valid master ip addresses (separated by commas)">
                        </div>
                        <button type="submit" class="btn btn-flat btn-primary" id="change_type">
-                            <i class="fa fa-check"></i>&nbsp;Change type for {{ domain.name }}
+                            <i class="fa fa-check"></i>&nbsp;Change type for {{ domain.name | pretty_domain_name }}
                        </button>
                    </form>
                </div>
@ -216,7 +216,7 @@
                            <option>OFF</option>
                        </select><br />
                        <button type="submit" class="btn btn-flat btn-primary" id="change_soa_edit_api">
-                            <i class="fa fa-check"></i>&nbsp;Change SOA-EDIT-API setting for {{ domain.name }}
+                            <i class="fa fa-check"></i>&nbsp;Change SOA-EDIT-API setting for {{ domain.name | pretty_domain_name }}
                        </button>
                    </form>
                </div>
@ -235,7 +235,7 @@
                        reverted.</p>
                    <button type="button" class="btn btn-flat btn-danger pull-left delete_domain"
                        id="{{ domain.name }}">
-                        <i class="fa fa-trash"></i>&nbsp;DELETE DOMAIN {{ domain.name }}
+                        <i class="fa fa-trash"></i>&nbsp;DELETE DOMAIN {{ domain.name | pretty_domain_name }}
                    </button>
                </div>
            </div>