142 lines
3.9 KiB
JavaScript
142 lines
3.9 KiB
JavaScript
// nip19.ts
|
|
import { bytesToHex, concatBytes, hexToBytes } from "@noble/hashes/utils";
|
|
import { bech32 } from "@scure/base";
|
|
|
|
// utils.ts
|
|
var utf8Decoder = new TextDecoder("utf-8");
|
|
var utf8Encoder = new TextEncoder();
|
|
|
|
// nip19.ts
|
|
var Bech32MaxSize = 5e3;
|
|
var BECH32_REGEX = /[\x21-\x7E]{1,83}1[023456789acdefghjklmnpqrstuvwxyz]{6,}/;
|
|
function decode(nip19) {
|
|
let { prefix, words } = bech32.decode(nip19, Bech32MaxSize);
|
|
let data = new Uint8Array(bech32.fromWords(words));
|
|
switch (prefix) {
|
|
case "nprofile": {
|
|
let tlv = parseTLV(data);
|
|
if (!tlv[0]?.[0])
|
|
throw new Error("missing TLV 0 for nprofile");
|
|
if (tlv[0][0].length !== 32)
|
|
throw new Error("TLV 0 should be 32 bytes");
|
|
return {
|
|
type: "nprofile",
|
|
data: {
|
|
pubkey: bytesToHex(tlv[0][0]),
|
|
relays: tlv[1] ? tlv[1].map((d) => utf8Decoder.decode(d)) : []
|
|
}
|
|
};
|
|
}
|
|
case "nevent": {
|
|
let tlv = parseTLV(data);
|
|
if (!tlv[0]?.[0])
|
|
throw new Error("missing TLV 0 for nevent");
|
|
if (tlv[0][0].length !== 32)
|
|
throw new Error("TLV 0 should be 32 bytes");
|
|
if (tlv[2] && tlv[2][0].length !== 32)
|
|
throw new Error("TLV 2 should be 32 bytes");
|
|
if (tlv[3] && tlv[3][0].length !== 4)
|
|
throw new Error("TLV 3 should be 4 bytes");
|
|
return {
|
|
type: "nevent",
|
|
data: {
|
|
id: bytesToHex(tlv[0][0]),
|
|
relays: tlv[1] ? tlv[1].map((d) => utf8Decoder.decode(d)) : [],
|
|
author: tlv[2]?.[0] ? bytesToHex(tlv[2][0]) : void 0,
|
|
kind: tlv[3]?.[0] ? parseInt(bytesToHex(tlv[3][0]), 16) : void 0
|
|
}
|
|
};
|
|
}
|
|
case "naddr": {
|
|
let tlv = parseTLV(data);
|
|
if (!tlv[0]?.[0])
|
|
throw new Error("missing TLV 0 for naddr");
|
|
if (!tlv[2]?.[0])
|
|
throw new Error("missing TLV 2 for naddr");
|
|
if (tlv[2][0].length !== 32)
|
|
throw new Error("TLV 2 should be 32 bytes");
|
|
if (!tlv[3]?.[0])
|
|
throw new Error("missing TLV 3 for naddr");
|
|
if (tlv[3][0].length !== 4)
|
|
throw new Error("TLV 3 should be 4 bytes");
|
|
return {
|
|
type: "naddr",
|
|
data: {
|
|
identifier: utf8Decoder.decode(tlv[0][0]),
|
|
pubkey: bytesToHex(tlv[2][0]),
|
|
kind: parseInt(bytesToHex(tlv[3][0]), 16),
|
|
relays: tlv[1] ? tlv[1].map((d) => utf8Decoder.decode(d)) : []
|
|
}
|
|
};
|
|
}
|
|
case "nrelay": {
|
|
let tlv = parseTLV(data);
|
|
if (!tlv[0]?.[0])
|
|
throw new Error("missing TLV 0 for nrelay");
|
|
return {
|
|
type: "nrelay",
|
|
data: utf8Decoder.decode(tlv[0][0])
|
|
};
|
|
}
|
|
case "nsec":
|
|
case "npub":
|
|
case "note":
|
|
return { type: prefix, data: bytesToHex(data) };
|
|
default:
|
|
throw new Error(`unknown prefix ${prefix}`);
|
|
}
|
|
}
|
|
function parseTLV(data) {
|
|
let result = {};
|
|
let rest = data;
|
|
while (rest.length > 0) {
|
|
let t = rest[0];
|
|
let l = rest[1];
|
|
if (!l)
|
|
throw new Error(`malformed TLV ${t}`);
|
|
let v = rest.slice(2, 2 + l);
|
|
rest = rest.slice(2 + l);
|
|
if (v.length < l)
|
|
throw new Error(`not enough data to read on TLV ${t}`);
|
|
result[t] = result[t] || [];
|
|
result[t].push(v);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
// nip21.ts
|
|
var NOSTR_URI_REGEX = new RegExp(`nostr:(${BECH32_REGEX.source})`);
|
|
|
|
// nip27.ts
|
|
var regex = () => new RegExp(`\\b${NOSTR_URI_REGEX.source}\\b`, "g");
|
|
function* matchAll(content) {
|
|
const matches = content.matchAll(regex());
|
|
for (const match of matches) {
|
|
try {
|
|
const [uri, value] = match;
|
|
yield {
|
|
uri,
|
|
value,
|
|
decoded: decode(value),
|
|
start: match.index,
|
|
end: match.index + uri.length
|
|
};
|
|
} catch (_e) {
|
|
}
|
|
}
|
|
}
|
|
function replaceAll(content, replacer) {
|
|
return content.replaceAll(regex(), (uri, value) => {
|
|
return replacer({
|
|
uri,
|
|
value,
|
|
decoded: decode(value)
|
|
});
|
|
});
|
|
}
|
|
export {
|
|
matchAll,
|
|
regex,
|
|
replaceAll
|
|
};
|