initial import of dnsmadeeasy module

library/net_infrastructure/dnsmadeeasy

@@ -0,0 +1,345 @@
+#!/usr/bin/python
+# This file is part of Ansible
+#
+# Ansible is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Ansible is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
+
+DOCUMENTATION = '''
+---
+module: dnsmadeeasy
+version_added: "1.3"
+short_description: Interface with dnsmadeeasy.com (a DNS hosting service).
+description:
+   - Manage DNS records via the v2 REST API of the DNS Made Easy service. Records only; no manipulation of domains or monitor/account support yet. See: http://www.dnsmadeeasy.com/services/rest-api/
+options:
+  account_key:
+    description:
+      - Accout API Key.
+    required: true
+    default: null
+    
+  account_secret:
+    description:
+      - Accout Secret Key.
+    required: true
+    default: null
+    
+  domain:
+    description:
+      - Domain to work with. Can be the domain name (e.g. "mydomain.com") or the numeric ID of the domain in DNS Made Easy (e.g. "839989") for faster resolution.
+    required: true
+    default: null
+    
+  record_name:
+    description:
+      - Record name (to get/create/delete/update).
+        If record_name is not specified; all records for the domain will be returned as "result" regardless of state argument.
+    required: false
+    default: null
+    
+  record_type:
+    description:
+      - Record type.
+    required: false
+    choices: [ 'A', 'AAAA', 'CNAME', 'HTTPRED', 'MX', 'NS', 'PTR', 'SRV', 'TXT' ]
+    default: null
+
+  record_value:
+    description: 
+      - Record value. HTTPRED: <redirection URL>, MX: <priority> <target name>, NS: <name server>, PTR: <target name>, SRV: <priority> <weight> <port> <target name>, TXT: <text value>
+        If record_value is not specified; no changes will be made and the record will be returned as "result" (e.g. can be used to fetch a record's current id, type, and ttl)
+    required: false
+    default: null
+    
+  record_ttl:
+    description:
+      - Record "Time to live".  Number of seconds a record remains cached in DNS servers.
+    required: false
+    default: 1800
+    
+  state:
+    description:
+      - If state is "present", record will be created.  If state is "present" and if record exists and values have changed, it will be updated.
+        If state is absent, record will be removed.
+    required: true
+    choices: [ 'present', 'absent' ]
+    default: null
+    
+notes:
+  - The DNS Made Easy service requires that machines interacting with it's API have the proper time + timezone set. Be sure you're within a few seconds of actual GMT by using NTP. 
+  - This module returns record(s) as "result" when state == 'present'. It can be be registered and used in your playbooks.
+  
+requirements: [ urllib, urllib2, hashlib, hmac ]
+author: Brice Burgess
+'''
+
+EXAMPLES = '''
+# fetch my.com domain records
+- dnsmadeeasy: account_key=key account_secret=secret domain=my.com state=present
+  register: response
+  
+# create / ensure the presence of a record
+- dnsmadeeasy: account_key=key account_secret=secret domain=my.com state=present record_name="test" record_type="A" record_value="127.0.0.1"
+
+# update the previously created record
+- dnsmadeeasy: account_key=key account_secret=secret domain=my.com state=present record_name="test" record_value="192.168.0.1"
+
+# fetch a specific record
+- dnsmadeeasy: account_key=key account_secret=secret domain=my.com state=present record_name="test"
+  register: response
+  
+# delete a record / ensure it is absent
+- dnsmadeeasy: account_key=key account_secret=secret domain=my.com state=absent record_name="test"
+'''
+
+# ============================================
+# DNSMadeEasy module specific support methods.
+#
+
+IMPORT_ERROR = None
+try:
+    import urllib
+    import urllib2
+    import json
+    from time import strftime, gmtime
+    import hashlib
+    import hmac
+except ImportError, e:
+    IMPORT_ERROR = str(e)
+
+
+class RequestWithMethod(urllib2.Request):
+
+    """Workaround for using DELETE/PUT/etc with urllib2"""
+
+    def __init__(self, url, method, data=None, headers={}):
+        self._method = method
+        urllib2.Request.__init__(self, url, data, headers)
+
+    def get_method(self):
+        if self._method:
+            return self._method
+        else:
+            return urllib2.Request.get_method(self)
+
+
+class DME2:
+
+    def __init__(self, apikey, secret, domain, module):
+        self.module = module
+
+        self.api = apikey
+        self.secret = secret
+        self.baseurl = 'http://api.dnsmadeeasy.com/V2.0/'
+        self.domain = str(domain)
+        self.domain_map = None      # ["domain_name"] => ID
+        self.record_map = None      # ["record_name"] => ID
+        self.records = None         # ["record_ID"] => <record>
+
+        # Lookup the domain ID if passed as a domain name vs. ID
+        if not self.domain.isdigit():
+            self.domain = self.getDomainByName(self.domain)['id']
+
+        self.record_url = 'dns/managed/' + str(self.domain) + '/records'
+
+    def _headers(self):
+        currTime = self._get_date()
+        hashstring = self._create_hash(currTime)
+        headers = {'x-dnsme-apiKey': self.api,
+                   'x-dnsme-hmac': hashstring,
+                   'x-dnsme-requestDate': currTime,
+                   'content-type': 'application/json'}
+        return headers
+
+    def _get_date(self):
+        return strftime("%a, %d %b %Y %H:%M:%S GMT", gmtime())
+
+    def _create_hash(self, rightnow):
+        return hmac.new(self.secret.encode(), rightnow.encode(), hashlib.sha1).hexdigest()
+
+    def query(self, resource, method, data=None):
+        url = self.baseurl + resource
+        if data and not isinstance(data, basestring):
+            data = urllib.urlencode(data)
+        request = RequestWithMethod(url, method, data, self._headers())
+
+        try:
+            response = urllib2.urlopen(request)
+        except urllib2.HTTPError, e:
+            self.module.fail_json(
+                msg="%s returned %s, with body: %s" % (url, e.code, e.read()))
+        except Exception, e:
+            self.module.fail_json(
+                msg="Failed contacting: %s : Exception %s" % (url, e.message()))
+
+        try:
+            return json.load(response)
+        except Exception, e:
+            return False
+
+    def getDomain(self, domain_id):
+        if not self.domain_map:
+            self._instMap('domain')
+
+        return self.domains.get(domain_id, False)
+
+    def getDomainByName(self, domain_name):
+        if not self.domain_map:
+            self._instMap('domain')
+
+        return self.getDomain(self.domain_map.get(domain_name, 0))
+
+    def getDomains(self):
+        return self.query('dns/managed', 'GET')['data']
+
+    def getRecord(self, record_id):
+        if not self.record_map:
+            self._instMap('record')
+
+        return self.records.get(record_id, False)
+
+    def getRecordByName(self, record_name):
+        if not self.record_map:
+            self._instMap('record')
+
+        return self.getRecord(self.record_map.get(record_name, 0))
+
+    def getRecords(self):
+        return self.query(self.record_url, 'GET')['data']
+
+    def _instMap(self, type):
+        #@TODO cache this call so it's executed only once per ansible execution
+        map = {}
+        results = {}
+
+        # iterate over e.g. self.getDomains() || self.getRecords()
+        for result in getattr(self, 'get' + type.title() + 's')():
+
+            map[result['name']] = result['id']
+            results[result['id']] = result
+
+        # e.g. self.domain_map || self.record_map
+        setattr(self, type + '_map', map)
+        setattr(self, type + 's', results)  # e.g. self.domains || self.records
+
+    def prepareRecord(self, data):
+        return json.dumps(data, separators=(',', ':'))
+
+    def createRecord(self, data):
+        #@TODO update the cache w/ resultant record + id when impleneted
+        return self.query(self.record_url, 'POST', data)
+
+    def updateRecord(self, record_id, data):
+        #@TODO update the cache w/ resultant record + id when impleneted
+        return self.query(self.record_url + '/' + str(record_id), 'PUT', data)
+
+    def deleteRecord(self, record_id):
+        #@TODO remove record from the cache when impleneted
+        return self.query(self.record_url + '/' + str(record_id), 'DELETE')
+
+
+# ===========================================
+# Module execution.
+#
+
+def main():
+
+    module = AnsibleModule(
+        argument_spec=dict(
+            account_key=dict(required=True),
+            account_secret=dict(required=True, no_log=True),
+            domain=dict(required=True),
+            state=dict(required=True, choices=['present', 'absent']),
+            record_name=dict(required=False),
+            record_type=dict(required=False, choices=[
+                             'A', 'AAAA', 'CNAME', 'HTTPRED', 'MX', 'NS', 'PTR', 'SRV', 'TXT']),
+            record_value=dict(required=False),
+            record_ttl=dict(required=False, default=1800, type='int'),
+            #redirecttype=dict(required=False,default='Hidden Frame Masked',choices=[ 'Hidden Frame Masked', 'Standard 301', 'Standard 302' ]),
+            #hardlink=dict(requred=False, default=False, type='bool', choices=BOOLEANS)
+        ),
+        required_together=(
+            ['record_value', 'record_ttl', 'record_type']
+        )
+    )
+
+    if IMPORT_ERROR:
+        module.fail_json(msg="Import Error: " + IMPORT_ERROR)
+
+    DME = DME2(module.params["account_key"], module.params[
+               "account_secret"], module.params["domain"], module)
+    state = module.params["state"]
+    record_name = module.params["record_name"]
+
+    # Follow Keyword Controlled Behavior
+    if not record_name:
+        domain_records = DME.getRecords()
+        if not domain_records:
+            module.fail_json(
+                msg="The %s domain name is not accessible with this api_key; try using its ID if known." % domain)
+        module.exit_json(changed=False, result=domain_records)
+
+    # Fetch existing record + Build new one
+    current_record = DME.getRecordByName(record_name)
+    new_record = {'name': record_name}
+    for i in ["record_value", "record_type", "record_ttl"]:
+        if module.params[i]:
+            new_record[i[len("record_"):]] = module.params[i]
+
+    # Compare new record against existing one
+    changed = False
+    if current_record:
+        for i in new_record:
+            if str(current_record[i]) != str(new_record[i]):
+                changed = True
+        new_record['id'] = str(current_record['id'])
+
+    # Follow Keyword Controlled Behavior
+    if state == 'present':
+        # return the record if no value is specified
+        if not "value" in new_record:
+            if not current_record:
+                module.fail_json(
+                    msg="A record with name '%s' does not exist for domain '%s.'" % (record_name, domain))
+            module.exit_json(changed=False, result=current_record)
+
+        # create record as it does not exist
+        if not current_record:
+            record = DME.createRecord(DME.prepareRecord(new_record))
+            module.exit_json(changed=True, result=record)
+
+        # update the record
+        if changed:
+            DME.updateRecord(
+                current_record['id'], DME.prepareRecord(new_record))
+            module.exit_json(changed=True, result=new_record)
+
+        # return the record (no changes)
+        module.exit_json(changed=False, result=current_record)
+
+    elif state == 'absent':
+        # delete the record if it exists
+        if current_record:
+            DME.deleteRecord(current_record['id'])
+            module.exit_json(changed=True)
+
+        # record does not exist, return w/o change.
+        module.exit_json(changed=False)
+
+    else:
+        module.fail_json(
+            msg="'%s' is an unknown value for the state argument" % state)
+
+# this is magic, see lib/ansible/module_common.py
+#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
+main()