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EPP implemented in node.js

#nodepp

An EPP implementation in node.js

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##Description

This is a service for communicating with registries over EPP. It takes datastructures in JSON, converts them to XML, sends them to the registry, and then does the whole thing in reverse with the response.

There are several tools included with this package:

  1. lib/node-epp-server.js is designed to function as a web interface where you can POST and receive json requests to/from multiple registries.
  2. lib/node-epp-restful.js similar to above, but only connects to one registry and has a couple specific GET endpoints for check- and infoDomain.
  3. lib/rabbit-epp.js, runs as an RPC server that accepts requests via RabbitMQ.

Installation

  1. Clone the repository: git clone https://github.com/heytrav/nodepp.git.
  2. cd nodepp
  3. npm install to install node dependencies.
  4. source nodepp.rc to include ./node_modules/.bin in the $PATH. This is necessary for testing or if you plan on running it as a daemon.

Configuration

In config/epp-config-example.json you'll find something that looks like this:

{
    "app-config": {
        "registry-test1": {
          // registry1 data
        },
        "registry-test2": {
          // registry2
        }
    },
    "rabbitmq": {
        "connection": {
          // RabbitMQ connection
        }
    },
    "whitelisted_ips": []
}

For your development and production environments, I recommend copying this file to config/epp-config-devel.json and config/epp-config-production.json, respectively, and modifying each to fit your needs. You will need to add your own login/password as well as the paths to any SSL certificates and keys. You can of course replace the keys registry-test1, registry-test2, etc. with something more descriptive of the registry.

When you've got the config setup the way you like it, symlink this to config/epp-config.json to run the application.

ln -s <path to app>/config/epp-config-devel.json <path to app>/config/epp-config.json

You can add as many registries as you like. You may even need to add the same registry multiple times with different logins, etc. This is practical for testing if you need to simulate transferring domains between two separate registrars.

The whitelisted_ips tells the application to only accept certain hosts.

Testing

    npm test

Note that a number of tests are currently set to skip automatically. These require a running RabbitMQ instance and that you have set up the configuration accordingly. They also assume that you have an online testing environment (OTE) account with some registry or registrar.

General CLI options

  • -r, --registries Specify registries. For node-epp-server.js, this can be used multiple times to open connections to several registries at once.
  • -f, --config-file The -f option specifies a file containing configuration for the registries you wish to connect to. See Configuration section.
  • -a, --app-config Pass registry configuration as a JSON string.
  • -j, --json Output logs in json
  • --loglevel

Running the web service

There are two web service scripts.

  • node-epp-server.js
  • node-epp-restful.js

node-epp-server.js

This webservice app is based on express.js and listens for POST requests on port 3000. You can start it as follows:

node ./lib/node-epp-server.js -f my-config.json -r registrar1 -r registrar2 [-j] [--loglevel debug]

This will startup with a child process connected to registrar and registrar2. Note that the -r arguments should correspond to a registrar in your config/epp-config.json file.

Alternatively you can start it as a daemon:

foreverd start -o nodepp-stout.log -e nodepp-sterr.log lib/node-epp-server.js \
    -f my-config.json

The general URL scheme is as follows:

http://<host>:3000/command/<registry>/<command>

So to run a checkDomain for registry1 on a local instance of the server, POST your request to:

http://localhost:3000/command/registry1/checkDomain

To stop the service:

foreverd stop lib/node-epp-server.js

You can test the script by posting JSON requests to the server instance. I recommend using the program Postman which can be installed in Chrome/Firefox as an extension. However, you can also use curl or the scripting language of your choice. I put an example of this down below.

node-epp-restful.js

This is a simpler alternative to node-epp-server. Unlike node-epp-server.js which forks off a child worker for each registry passed in the command line, node-epp-restful.js only starts one process and only connects to one registry.

Originally node-epp-server.js was written with the understanding that one would start the app with connections for multiple registries (or the same registry multiple times). However, I found this to be a bit impractical for running as a microservice. Not to mention the config file was becoming fairly convoluted. It seemed more sensbile for a microservice to just "run more instances". I also found it a bit difficult to keep track of child processes that would die or hang because of broken connections.

node-epp-restful.js will just quit if the connection goes stale. This makes it easier to catch and restart if you are running the application in a docker container or with forever.

It can be started in a similar fashion to node-epp-server.js.

node lib/node-epp-restful.js -r <some registry> -j --loglevel debug

node-epp-restful.js also has a couple specific GET endpoints for handling simple checkDomain and infoDomain commands

curl http://<local url>:<port>/checkDomain/whatever.tld

Note that you do not need to specify the registry as part of the URL. It is assumed that you are running each microservice with a specific location (IP address or local URL) and that it will always be the same for a particular instance.

Running the RabbitMQ service

This is a RPC service that listens for connections on RabbitMQ. Have a look at the rabbitmq section of the configuration file if you would like to run this. To run the application:

node lib/rabbit-epp.js -r registry-test1

Or as a daemon:

foreverd start -o nodepp-stout.log -e nodepp-sterr.log lib/rabbit-epp.js \
    -r registry-test1 -r registry-test2 -r registry-test3

To stop it:

foreverd stop lib/rabbit-epp.js

Note that for all commands documented below, the datastructure that is sent via RabbitMQ needs to be modified as follows:

 {
    "command": "<command name>",
    "data": <request data>
 }

I wrote some scripts for interacting with the RabbitMQ service in my epp-reg project. Feel free to use those as you like.

EPP Commands

checkContact

{"id": "P-12345xyz"}

or

{"contact": "P-12345xyz"}

infoContact

{"id": "P-12345xyz"}

or

{"contact": "P-12345xyz"}

createContact

{
    "id": "my-id-1234",
    "voice": "+1.9405551234",
    "fax": "+1.9405551233",
    "email": "[email protected]",
    "authInfo": {
        "pw": "xyz123"
    },
    "postalInfo": [{
        "name": "John Doe",
        "org": "Example Ltd",
        "type": "int",
        "addr": [{
            "street": ["742 Evergreen Terrace", "Apt b"],
            "city": "Springfield",
            "sp": "OR",
            "pc": "97801",
            "cc": "US"
        }]
    }]
}

Some registries set the id by default. In such cases it's common to use auto. The value for type may also vary for different registries. Some require loc and some require int. EPP allows for up to 2 postaInfo entries, however I've never seen a registry that accepts more than 1. For that reason, you can just specify it as a single object:

"postalInfo": {
    "name": "John Doe",
    "org": "Example Ltd",
    "type": "int",
    "addr": [{
        "street": ["742 Evergreen Terrace", "Apt b"],
        "city": "Springfield",
        "sp": "OR",
        "pc": "97801",
        "cc": "US"
    }]
}

It will be passed to the registry in the appropriate format. The same applies to the addr field (in postalInfo), which can also be specified as an Array or single object.

"addr": {
    "street": ["742 Evergreen Terrace", "Apt b"],
    "city": "Springfield",
    "sp": "OR",
    "pc": "97801",
    "cc": "US"
}

updateContact

{
    id: "p-12345",
    add: ['clientDeleteProhibited'],
    rem: ['clientTransferProhibited'],
    chg: {
        "postalInfo": [{
            "name": "John Doe",
            "org": "Example Ltd",
            "type": "loc",
            "addr": [{
                "street": ["742 Evergreen Terrace", "Apt b"],
                "city": "Eugene",
                "sp": "OR",
                "pc": "97801",
                "cc": "US"
            }]
        }],
        "voice": "+1.9405551234",
        "fax": "+1.9405551233",
        "email": "[email protected]",
        "authInfo": {
            "pw": "xyz123"
        },
        "disclose": {
            "flag": 0,
            "disclosing": ["voice", "email"]
        }
    }
}

checkDomain

The following are equivalent:

{"domain": "something.com"}

or

{"name": "something.com"}

It is possible to check more than one domain at a time.

        {"domain": ["test-domain.com", "test-domain2.com", "test-domain3.com"]}

infoDomain

        {"domain": "something.com"}

In case you are wondering if you can send multiple domains like in checkDomain, the answer is no. That's not possible in EPP. The result that you will get back in one infoDomain will be complicated enough.

createDomain

{
    "name": "myreg-test-101-domain.com",
    "period": {
        "unit": "y",
        "value": 1
    },
    "ns":[
        "ns1.hexonet.net",
        "ns2.hexonet.net"
    ],
        "registrant": "my-id-1234",
    "contact": [
        { "admin": "my-id-1235" },
        { "tech": "my-id-1236" },
        {"billing": "my-id-1236"}
    ],
    "authInfo": {
        "pw": "Axri3k.XXjp"
    }
}

See comments below regarding alternative formats for ns, period, and authInfo fields.

deleteDomain

        {"domain": "something.com"}

renewDomain

{
    "domain": "something.com",
    "curExpDate": "2016-04-03",
    "period": {
        "unit": 'y',
        "value": 1
    }
}

period is optional and will default to 1 year.

transferDomain

{
    "name": "test-domain.com",
    "op": "request",
    "period": 1,
    "authInfo": {
        "roid": "P-12345", // optional
        "pw": "2fooBAR"
    }
}

Valid values for op are approve, cancel, query, reject, and request. There uses are:

  • Requesting side

    1. request to request a transfer.
    2. cancel to cancel a transfer.
    3. query to find out if a transfer is pending (although we should get info via polling)

  • Domain holder side

    1. approve to approve a transfer request from another registrar.
    2. reject to reject a transfer request from another registrar.

updateDomain

{
    "name": "test-domain.com",
    "add": {
        "ns": ["ns3.test.com", "ns4.whatever.com"],
        "contact": [{
            "admin": "P-9876"
        },
        {
            "billing": "PX143"
        }],
        "status": ["clientUpdateProhibited", {
            "s": "clientHold",
            "lang": "en",
            "value": "Payment Overdue"
        }]
    },
    "rem": {
        "ns": [{
            "host": "ns1.test-domain.com",
            "addr": {
                "type": "v4",
                "ip": "192.68.2.132"
            }
        }],
        "contact": [{
            "billing": "PX147"
        }],
        "status": ["clientTransferProhibited", {
            "s": "clientWhatever",
            "lang": "en",
            "value": "Payment Overdue"
        }]
    },
    "chg": {
        "registrant": "P-49023",
        "authInfo": {
            "pw": "TestPass2"
        }
    }
}

This is a very complicated example but at least shows what is possible in an updateDomain. At least 1 of add, rem, or chg is required. The chg field, if provided, must contain either a registrant and/or an authInfo. add and rem elements, if provided, must contain any one or more ns, contact, or status fields.

createHost

{
    "name": "ns1.host.com",
    "addr": ["23.84.43.123", {
        "ip": "22.4.22.5"
    },
    {
        "ip": "::F3:34::BA:",
        "type": "v6"
    }]
}

updateHost

{
    "name": "ns1.host.com",
    "chg": {
        "name": "ns2.host.com",
    },
    "add": {
        "addr": {
            "ip": "::F3:34::BA:",
            "type": "v6"
        },
        "status": ["clientUpdateProhibited"]
    },
    "rem": {
        "addr": ["23.84.43.123", {
            "ip": "22.4.22.5"
        }],
        "status": ["clientTransferProhibited", "sneezeAchoo"]
    }
}

General stuff

Some of the required datastructures might seem a bit weird. EPP has a fairly complex grammar that is probably intended to make granular control of domain related entities possible. There are no flat datastructures and some things must be specified explicitly that would be assumed in systems that use key=value APIs. For example, to remove nameservers from a domain, it is necessary to remove them explicitly. Simply updating domain with the new nameservers will not work. The same goes for contact objects.

Host objects

In createDomain and updateDomain I've tried to account for 2 different types of host objects. In the simplest version you can just pass an array of strings:

    ["ns1.host.com", "ns2.host.tld"]

In cases where IP addresses are required, the following variants can be used:

    [{host: "ns1.host.com", addr: "62.47.23.1"}]
    [{host: "ns2.host.com", addr:[ "62.47.23.1", {ip: "53.23.1.3"}    ]}]
    [{host: "ns3.host.com", addr:[ {ip: "::F3:E2:23:::", type: "v6"}, {ip:"47.23.43.1", type: "v4"} ]}]

type is v4 by default. You'll have to specify v6 explicitly for IPv6 addresses.

It's up to you to know which cases glue records are required. This implementation has no way to know that.

authInfo

createContact, createDomain, transferDomain and updateDomain accept an authInfo parameter.

Following are equivalent:

    authInfo: "te2tP422t"

or

    authInfo: {
        pw: "te2tP422t"
    }

In some cases you may need to supply a roid in addition to the authInfo. This is used to identify the registrant or contact object if and only if the given authInfo is associated with a registrant or contact object, and not the domain object itself.

authInfo: {
        pw: "te2tP422t",
        roid: "P-1234"
}

period

The period argument in createDomain, renewDomain and transferDomain can be specified as follows:

1 year registration

period: 1

24 month registration

period: {
    unit: "m",
    value: 24
}

The default unit is y for year and default period is 1.

transactionId

A transactionId is optional. It can be added at the top level of the JSON data structure. By default it will be set to myreg-<epoch timestamp>.

Extensions

You can optionally add an extension property to some commands. This varies from registry to registry like everything else. A good example is when adding DNSSEC data to a createDomain:

{
    "name": "myreg-test-101-domain.com",
    "period": {
        "unit": "y",
        "value": 1
    },
    "ns":["ns1.hexonet.net","ns2.hexonet.net"],
        "registrant": "my-id-1234",
    "contact": [
        { "admin": "my-id-1235" },
        { "tech": "my-id-1236" },
        {"billing": "my-id-1236"}
    ],
    "authInfo": {
        "pw": "Axri3k.XXjp"
    },
    "extension": {
        "DNSSEC": {
            "maxSigLife": 604800,
            "dsData": {
                "keyTag": 12345,
                "alg": 3,
                "digestType": 1,
                "digest": "49FD46E6C4B45C55D4AC",
                "keyData": {
                    "flags": 257,
                    "protocol": 3,
                    "alg": 1,
                    "pubKey": "AQPJ////4Q=="
                }
            }
        }
    }
}

DNSSEC

I've implemented DNSSEC EPP generation for create and update.

Following are some variations that you can send (I'm leaving out the standard part of the EPP request):

createDomain

Create a domain with the dsData interface:

"extension": {
    "DNSSEC": {
        "maxSigLife": 604800,
        "dsData": {
            "keyTag": 12345,
            "alg": 3,
            "digestType": 1,
            "digest": "49FD46E6C4B45C55D4AC"
        }
    }
}

with the keyData interface:

"extension": {
    "DNSSEC": {
        "keyData":{
            "flags": 257,
            "protocol": 3,
            "alg": 1,
            "pubKey": "AQPJ////4Q=="
        }
    }
}

with the keyData in the dsData element:

"extension": {
    "DNSSEC": {
        "maxSigLife": 604800,
        "dsData": {
            "keyTag": 12345,
            "alg": 3,
            "digestType": 1,
            "digest": "49FD46E6C4B45C55D4AC",
            "keyData":{
                "flags": 257,
                "protocol": 3,
                "alg": 1,
                "pubKey": "AQPJ////4Q=="
            }
        }
    }
}

updateDomain

Add a dsData key and remove a keyData key and change the maxSigLife of the key

"extension": {
    "DNSSEC": {
        "add": {
            "dsData": {
                "keyTag": 12345,
                "alg": 3,
                "digestType": 1,
                "digest": "49FD46E6C4B45C55D4AC"
            }
        },
        "rem": {
            "keyData": {
                "flags": 257,
                "protocol": 3,
                "alg": 1,
                "pubKey": "AQPJ////4Q=="
            }
        },
        "chg": {
            "maxSigLife": 604800
        }
    }
}

Remove all existing key info and replace it with something new:

"extension": {
    "DNSSEC": {
        "rem": {
            "all": true
        },
        "add": {
            "dsData": {
                "keyTag": 12345,
                "alg": 3,
                "digestType": 1,
                "digest": "49FD46E6C4B45C55D4AC"
            }
        }
    }
}

Example usage

Post the following to http://localhost:3000/command/hexonet/checkDomain

prompt$ time curl -H "Content-Type: application/json" \
    -d '{"domain": "test-domain.com"}'  \
            http://localhost:3000/command/<registry>/checkDomain

Note I just put time in there to show what the execution time is. YMMV

You should get the following response (or something similar):

    "result":{
        "code":1000,"msg":"Command completed successfully"},
        "resData":{
            "domain:chkData": {
                "xmlns:domain":"urn:ietf:params:xml:ns:domain-1.0",
                "xsi:schemaLocation":"urn:ietf:params:xml:ns:domain-1.0 domain-1.0.xsd",
            "domain:cd":{
                "domain:name":{
                    "avail":0,
                    "$t":"test-domain.com"
                    },
                "domain:reason":"Domain exists"
                }
            }
        },

I plan to get rid of some of the EPP cruft in the near future.

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EPP implemented in node.js

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