*Refactor IPFS to use an external IPFS node
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@ -2,19 +2,15 @@ import { rpcError, RpcMethodList, validateChain } from "./index.js";
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import type { IPFS } from "ipfs-core";
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import { dynImport } from "../util.js";
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import { CID } from "multiformats/cid";
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import last from "it-last";
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// @ts-ignore
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import toStream from "it-to-stream";
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import { addStream } from "../streams.js";
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import { bases } from "multiformats/basics";
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import { ERR_HASH_IS_DIRECTORY } from "../error.js";
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import type { StatResult } from "ipfs-core/dist/src/components/files/stat";
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let client: IPFS | Promise<any>;
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let resolver: typeof import("ipfs-http-response").resolver;
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let utils: typeof import("ipfs-http-response").utils;
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let detectContentType: typeof import("ipfs-http-response").utils.detectContentType;
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let normalizeCidPath: typeof import("ipfs-core/dist/src/utils.js").normalizeCidPath;
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interface StatFileResponse {
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exists: boolean;
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@ -31,6 +27,24 @@ interface StatFileSubfile {
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size: number;
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}
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function normalizeCidPath(path: any) {
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if (path instanceof Uint8Array) {
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return CID.decode(path).toString();
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}
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path = path.toString();
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if (path.indexOf("/ipfs/") === 0) {
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path = path.substring("/ipfs/".length);
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}
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if (path.charAt(path.length - 1) === "/") {
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path = path.substring(0, path.length - 1);
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}
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return path;
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}
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async function initIpfs() {
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if (client) {
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if (client instanceof Promise) {
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@ -40,20 +54,18 @@ async function initIpfs() {
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return;
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}
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const IPFS: typeof import("ipfs-core") = await dynImport("ipfs-core");
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const IPFS: typeof import("ipfs-http-client") = await dynImport(
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"ipfs-http-client"
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);
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const ipfsHttpResponse: typeof import("ipfs-http-response") = await dynImport(
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"ipfs-http-response"
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);
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normalizeCidPath = (await dynImport("ipfs-core/src/utils.js"))
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.normalizeCidPath;
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resolver = ipfsHttpResponse.resolver;
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utils = ipfsHttpResponse.utils;
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detectContentType = utils.detectContentType;
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client = IPFS.create({
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// relay: { hop: { enabled: false } },
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silent: true,
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host: "127.0.0.1",
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});
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client = await client;
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}
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@ -72,6 +84,8 @@ function normalizePath(
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fullPath = `${hash}/${path}`;
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}
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fullPath = fullPath.replace(/\/{2,}/, "/");
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return normalizeCidPath(fullPath);
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}
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@ -153,36 +167,27 @@ async function fileExists(
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let ipfsPath = normalizePath(hash, path, fullPath);
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try {
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const controller = new AbortController();
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setTimeout(() => controller.abort(), 5000);
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return client.files.stat(`/ipfs/${ipfsPath}`, {
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// setTimeout(() => controller.abort(), 5000);
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const ret = await client.files.stat(`/ipfs/${ipfsPath}`, {
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signal: controller.signal,
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});
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return ret;
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} catch (err: any) {
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return err;
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}
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}
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async function resolveIpns(hash: string, path: string): Promise<string> {
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switch (hash.substring(0, 1)) {
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case bases.base36.prefix: {
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hash = CID.parse(hash, bases.base36).toString();
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}
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}
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let fullPath = `${hash}/${path}`.replace(/\/+/, "/");
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async function resolveIpns(
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hash: string,
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path: string
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): Promise<string | boolean> {
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client = client as IPFS;
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const controller = new AbortController();
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setTimeout(() => controller.abort(), 5000);
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for await (const result of client.name.resolve(hash)) {
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return normalizePath(undefined, undefined, `${result}/${path}`);
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}
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return (
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(await last(
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client.name.resolve(fullPath, {
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recursive: true,
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signal: controller.signal,
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})
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)) || path
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);
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return false;
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}
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const CHAIN = "ipfs";
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@ -196,12 +201,12 @@ export default {
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}
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}),
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stat_ipns: validateChain(CHAIN, async (args: any) => {
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let ipfsPath;
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try {
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ipfsPath = await resolveIpns(args.hash, args.path);
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return statFile(undefined, undefined, ipfsPath);
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let ipfsPath = await resolveIpns(args?.hash, args?.path);
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if (!ipfsPath) {
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throw new Error("ipns lookup failed");
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}
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return statFile(undefined, undefined, ipfsPath as string);
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} catch (e: any) {
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return rpcError((e as Error).message);
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}
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@ -220,10 +225,12 @@ export default {
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}
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}),
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fetch_ipns: validateChain(CHAIN, async (args: any) => {
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let ipfsPath;
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try {
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ipfsPath = await resolveIpns(args.hash, args.path);
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const ret = await fetchFile(undefined, undefined, ipfsPath);
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let ipfsPath = await resolveIpns(args?.hash, args?.path);
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if (!ipfsPath) {
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throw new Error("ipns lookup failed");
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}
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const ret = await fetchFile(undefined, undefined, ipfsPath as string);
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if (ret instanceof Error) {
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throw ret;
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}
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