118 lines
3.5 KiB
JavaScript
118 lines
3.5 KiB
JavaScript
// nip19.ts
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import { bytesToHex as bytesToHex2, concatBytes, hexToBytes as hexToBytes2 } from "@noble/hashes/utils";
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import { bech32 } from "@scure/base";
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// utils.ts
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import { bytesToHex, hexToBytes } from "@noble/hashes/utils";
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var utf8Decoder = new TextDecoder("utf-8");
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var utf8Encoder = new TextEncoder();
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// nip19.ts
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var Bech32MaxSize = 5e3;
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var BECH32_REGEX = /[\x21-\x7E]{1,83}1[023456789acdefghjklmnpqrstuvwxyz]{6,}/;
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function decode(code) {
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let { prefix, words } = bech32.decode(code, Bech32MaxSize);
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let data = new Uint8Array(bech32.fromWords(words));
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switch (prefix) {
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case "nprofile": {
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let tlv = parseTLV(data);
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if (!tlv[0]?.[0])
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throw new Error("missing TLV 0 for nprofile");
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if (tlv[0][0].length !== 32)
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throw new Error("TLV 0 should be 32 bytes");
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return {
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type: "nprofile",
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data: {
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pubkey: bytesToHex2(tlv[0][0]),
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relays: tlv[1] ? tlv[1].map((d) => utf8Decoder.decode(d)) : []
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}
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};
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}
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case "nevent": {
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let tlv = parseTLV(data);
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if (!tlv[0]?.[0])
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throw new Error("missing TLV 0 for nevent");
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if (tlv[0][0].length !== 32)
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throw new Error("TLV 0 should be 32 bytes");
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if (tlv[2] && tlv[2][0].length !== 32)
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throw new Error("TLV 2 should be 32 bytes");
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if (tlv[3] && tlv[3][0].length !== 4)
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throw new Error("TLV 3 should be 4 bytes");
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return {
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type: "nevent",
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data: {
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id: bytesToHex2(tlv[0][0]),
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relays: tlv[1] ? tlv[1].map((d) => utf8Decoder.decode(d)) : [],
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author: tlv[2]?.[0] ? bytesToHex2(tlv[2][0]) : void 0,
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kind: tlv[3]?.[0] ? parseInt(bytesToHex2(tlv[3][0]), 16) : void 0
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}
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};
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}
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case "naddr": {
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let tlv = parseTLV(data);
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if (!tlv[0]?.[0])
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throw new Error("missing TLV 0 for naddr");
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if (!tlv[2]?.[0])
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throw new Error("missing TLV 2 for naddr");
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if (tlv[2][0].length !== 32)
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throw new Error("TLV 2 should be 32 bytes");
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if (!tlv[3]?.[0])
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throw new Error("missing TLV 3 for naddr");
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if (tlv[3][0].length !== 4)
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throw new Error("TLV 3 should be 4 bytes");
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return {
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type: "naddr",
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data: {
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identifier: utf8Decoder.decode(tlv[0][0]),
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pubkey: bytesToHex2(tlv[2][0]),
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kind: parseInt(bytesToHex2(tlv[3][0]), 16),
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relays: tlv[1] ? tlv[1].map((d) => utf8Decoder.decode(d)) : []
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}
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};
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}
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case "nsec":
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return { type: prefix, data };
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case "npub":
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case "note":
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return { type: prefix, data: bytesToHex2(data) };
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default:
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throw new Error(`unknown prefix ${prefix}`);
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}
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}
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function parseTLV(data) {
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let result = {};
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let rest = data;
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while (rest.length > 0) {
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let t = rest[0];
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let l = rest[1];
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let v = rest.slice(2, 2 + l);
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rest = rest.slice(2 + l);
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if (v.length < l)
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throw new Error(`not enough data to read on TLV ${t}`);
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result[t] = result[t] || [];
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result[t].push(v);
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}
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return result;
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}
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// nip21.ts
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var NOSTR_URI_REGEX = new RegExp(`nostr:(${BECH32_REGEX.source})`);
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function test(value) {
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return typeof value === "string" && new RegExp(`^${NOSTR_URI_REGEX.source}$`).test(value);
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}
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function parse(uri) {
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const match = uri.match(new RegExp(`^${NOSTR_URI_REGEX.source}$`));
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if (!match)
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throw new Error(`Invalid Nostr URI: ${uri}`);
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return {
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uri: match[0],
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value: match[1],
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decoded: decode(match[1])
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};
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}
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export {
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NOSTR_URI_REGEX,
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parse,
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test
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};
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