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Open Attestation (dnsprove)

A helper library to retrieve OpenAttestation DNS-TXT records from domains using Google's public DNS service.

A valid OpenAttestation DNS-TXT record looks like:

[
  {
    name: "example.openattestation.com.",
    type: 16,
    TTL: 110,
    data: '"openatts net=ethereum netId=3 addr=0x2f60375e8144e16Adf1979936301D8341D58C36C"',
  },
];

Validation is run on all retrieved records to ensure they conform to the expected format, and records that fail validation will simply be omitted from the returned results.

Installation

npm i @govtechsg/dnsprove

Debug

To see validation failures run the library with the debug flag turned on, either

In Browser:

localStorage.debug="dnsprove*"

In NodeJS:

DEBUG="dnsprove*" npm run test

Types

This library uses runtypes for compile time static type checking as well as run time input validation. The generated documentation below is inaccurate for any Runtypes generated types due to documentation generator limitations.

API

Table of Contents

OpenAttestationDNSTextRecord

OpenAttestationDnsDidRecord

IDNSRecord

IDNSQueryResponse

CustomDnsResolver

Type: function (domain: string): Promise<IDNSQueryResponse>

defaultDnsResolvers

Type: Array<CustomDnsResolver>

queryDns

Parameters

Returns Promise<IDNSQueryResponse>

parseOpenAttestationRecord

Parses one openattestation DNS-TXT record and turns it into an OpenAttestationsDNSTextRecord object

Parameters

  • record string e.g: '"openatts net=ethereum netId=3 addr=0x0c9d5E6C766030cc6f0f49951D275Ad0701F81EC"'

Returns GenericObject

parseDocumentStoreResults

Takes a DNS-TXT Record set and returns openattestation document store records if any

Parameters

Returns Array<OpenAttestationDNSTextRecord>

parseDnsDidResults

Parameters

Returns Array<OpenAttestationDnsDidRecord>

getDocumentStoreRecords

Queries a given domain and parses the results to retrieve openattestation document store records if any

Parameters

Examples

> getDocumentStoreRecords("example.openattestation.com")
> [ { type: 'openatts',
net: 'ethereum',
netId: '3',
addr: '0x2f60375e8144e16Adf1979936301D8341D58C36C',
dnssec: true } ]

Returns Promise<Array<OpenAttestationDNSTextRecord>>

getDnsDidRecords

Parameters

Returns Promise<Array<OpenAttestationDnsDidRecord>>

License

MIT

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