mirror of
https://github.com/corda/corda.git
synced 2024-12-28 00:38:55 +00:00
1ca2059863
* Update docs (node naming constraints). * Update CordaX500NameTest to ensure consistency with the docs. * Respond to feedback.
93 lines
4.6 KiB
ReStructuredText
93 lines
4.6 KiB
ReStructuredText
Node structure
|
|
==============
|
|
|
|
.. contents::
|
|
|
|
A Corda node has the following structure:
|
|
|
|
.. sourcecode:: none
|
|
|
|
.
|
|
├── additional-node-infos // Additional node infos to load into the network map cache, beyond what the network map server provides
|
|
├── artemis // Stores buffered P2P messages
|
|
├── brokers // Stores buffered RPC messages
|
|
├── certificates // The node's certificates
|
|
├── corda-webserver.jar // The built-in node webserver
|
|
├── corda.jar // The core Corda libraries
|
|
├── cordapps // The CorDapp JARs installed on the node
|
|
├── drivers // Contains a Jolokia driver used to export JMX metrics, the node loads any additional JAR files from this directory at startup.
|
|
├── logs // The node logs
|
|
├── network-parameters // The network parameters automatically downloaded from the network map server
|
|
├── node.conf // The node's configuration files
|
|
├── persistence.mv.db // The node's database
|
|
└── shell-commands // Custom shell commands defined by the node owner
|
|
|
|
The node is configured by editing its ``node.conf`` file (see :doc:`corda-configuration-file`). You install CorDapps on
|
|
the node by dropping CorDapp JARs into the ``cordapps`` folder.
|
|
|
|
In development mode (i.e. when ``devMode = true``, see :doc:`corda-configuration-file`), the ``certificates``
|
|
directory is filled with pre-configured keystores if the required keystores do not exist. This ensures that developers
|
|
can get the nodes working as quickly as possible. However, these pre-configured keystores are not secure, to learn more
|
|
see :doc:`permissioning`.
|
|
|
|
.. _node_naming:
|
|
|
|
Node naming
|
|
-----------
|
|
A node's name must be a valid X.500 distinguished name. In order to be compatible with other implementations
|
|
(particularly TLS implementations), we constrain the allowed X.500 name attribute types to a subset of the minimum
|
|
supported set for X.509 certificates (specified in RFC 3280), plus the locality attribute:
|
|
|
|
* Organization (O)
|
|
* State (ST)
|
|
* Locality (L)
|
|
* Country (C)
|
|
* Organizational-unit (OU)
|
|
* Common name (CN)
|
|
|
|
Note that the serial number is intentionally excluded in order to minimise scope for uncertainty in the distinguished name format.
|
|
The distinguished name qualifier has been removed due to technical issues; consideration was given to "Corda" as qualifier,
|
|
however the qualifier needs to reflect the compatibility zone, not the technology involved. There may be many Corda namespaces,
|
|
but only one R3 namespace on Corda. The ordering of attributes is important.
|
|
|
|
``State`` should be avoided unless required to differentiate from other ``localities`` with the same or similar names at the
|
|
country level. For example, London (GB) would not need a ``state``, but St Ives would (there are two, one in Cornwall, one
|
|
in Cambridgeshire). As legal entities in Corda are likely to be located in major cities, this attribute is not expected to be
|
|
present in the majority of names, but is an option for the cases which require it.
|
|
|
|
The name must also obey the following constraints:
|
|
|
|
* The ``organisation``, ``locality`` and ``country`` attributes are present
|
|
|
|
* The ``state``, ``organisational-unit`` and ``common name`` attributes are optional
|
|
|
|
* The fields of the name have the following maximum character lengths:
|
|
|
|
* Common name: 64
|
|
* Organisation: 128
|
|
* Organisation unit: 64
|
|
* Locality: 64
|
|
* State: 64
|
|
|
|
* The ``country`` attribute is a valid ISO 3166-1 two letter code in upper-case
|
|
|
|
* The ``organisation`` field of the name obeys the following constraints:
|
|
* Has at least two letters
|
|
* Does not include the following characters: ``,`` , ``"``, ``\``
|
|
* Is in NFKC normalization form
|
|
* Does not contain the null character
|
|
* Only the latin, common and inherited unicode scripts are supported
|
|
* No double-spacing
|
|
|
|
This is to avoid right-to-left issues, debugging issues when we can't pronounce names over the phone, and
|
|
character confusability attacks.
|
|
|
|
.. note:: The network operator of a Corda Network may put additional constraints on node naming in place.
|
|
|
|
External identifiers
|
|
^^^^^^^^^^^^^^^^^^^^
|
|
Mappings to external identifiers such as Companies House nos., LEI, BIC, etc. should be stored in custom X.509
|
|
certificate extensions. These values may change for operational reasons, without the identity they're associated with
|
|
necessarily changing, and their inclusion in the distinguished name would cause significant logistical complications.
|
|
The OID and format for these extensions will be described in a further specification.
|