mirror of
https://github.com/sequentialread/pow-captcha.git
synced 2025-11-23 22:15:47 +00:00
use wasm_bindgen properly in CrossOrigin version
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48abd8be27
commit
ac27924f68
@ -145,6 +145,232 @@ function base64ToHex(str) {
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}
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return result;
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}
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let wasm_bindgen;
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(function() {
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const __exports = {};
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let script_src;
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if (typeof document !== 'undefined' && document.currentScript !== null) {
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script_src = new URL(document.currentScript.src, location.href).toString();
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}
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let WASM_VECTOR_LEN = 0;
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let cachedUint8ArrayMemory0 = null;
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function getUint8ArrayMemory0() {
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if (cachedUint8ArrayMemory0 === null || cachedUint8ArrayMemory0.byteLength === 0) {
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cachedUint8ArrayMemory0 = new Uint8Array(wasm.memory.buffer);
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}
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return cachedUint8ArrayMemory0;
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}
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const cachedTextEncoder = (typeof TextEncoder !== 'undefined' ? new TextEncoder('utf-8') : { encode: () => { throw Error('TextEncoder not available') } } );
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const encodeString = (typeof cachedTextEncoder.encodeInto === 'function'
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? function (arg, view) {
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return cachedTextEncoder.encodeInto(arg, view);
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}
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: function (arg, view) {
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const buf = cachedTextEncoder.encode(arg);
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view.set(buf);
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return {
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read: arg.length,
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written: buf.length
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};
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});
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function passStringToWasm0(arg, malloc, realloc) {
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if (realloc === undefined) {
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const buf = cachedTextEncoder.encode(arg);
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const ptr = malloc(buf.length, 1) >>> 0;
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getUint8ArrayMemory0().subarray(ptr, ptr + buf.length).set(buf);
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WASM_VECTOR_LEN = buf.length;
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return ptr;
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}
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let len = arg.length;
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let ptr = malloc(len, 1) >>> 0;
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const mem = getUint8ArrayMemory0();
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let offset = 0;
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for (; offset < len; offset++) {
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const code = arg.charCodeAt(offset);
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if (code > 0x7F) break;
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mem[ptr + offset] = code;
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}
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if (offset !== len) {
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if (offset !== 0) {
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arg = arg.slice(offset);
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}
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ptr = realloc(ptr, len, len = offset + arg.length * 3, 1) >>> 0;
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const view = getUint8ArrayMemory0().subarray(ptr + offset, ptr + len);
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const ret = encodeString(arg, view);
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offset += ret.written;
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ptr = realloc(ptr, len, offset, 1) >>> 0;
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}
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WASM_VECTOR_LEN = offset;
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return ptr;
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}
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const cachedTextDecoder = (typeof TextDecoder !== 'undefined' ? new TextDecoder('utf-8', { ignoreBOM: true, fatal: true }) : { decode: () => { throw Error('TextDecoder not available') } } );
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if (typeof TextDecoder !== 'undefined') { cachedTextDecoder.decode(); };
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function getStringFromWasm0(ptr, len) {
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ptr = ptr >>> 0;
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return cachedTextDecoder.decode(getUint8ArrayMemory0().subarray(ptr, ptr + len));
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}
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/**
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* @param {string} password
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* @param {string} salt
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* @param {number} n
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* @param {number} r
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* @param {number} p
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* @param {number} dklen
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* @returns {string}
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*/
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__exports.scrypt = function(password, salt, n, r, p, dklen) {
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let deferred3_0;
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let deferred3_1;
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try {
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const ptr0 = passStringToWasm0(password, wasm.__wbindgen_malloc, wasm.__wbindgen_realloc);
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const len0 = WASM_VECTOR_LEN;
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const ptr1 = passStringToWasm0(salt, wasm.__wbindgen_malloc, wasm.__wbindgen_realloc);
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const len1 = WASM_VECTOR_LEN;
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const ret = wasm.scrypt(ptr0, len0, ptr1, len1, n, r, p, dklen);
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deferred3_0 = ret[0];
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deferred3_1 = ret[1];
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return getStringFromWasm0(ret[0], ret[1]);
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} finally {
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wasm.__wbindgen_free(deferred3_0, deferred3_1, 1);
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}
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};
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async function __wbg_load(module, imports) {
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if (typeof Response === 'function' && module instanceof Response) {
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if (typeof WebAssembly.instantiateStreaming === 'function') {
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try {
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return await WebAssembly.instantiateStreaming(module, imports);
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} catch (e) {
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if (module.headers.get('Content-Type') != 'application/wasm') {
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console.warn("`WebAssembly.instantiateStreaming` failed because your server does not serve Wasm with `application/wasm` MIME type. Falling back to `WebAssembly.instantiate` which is slower. Original error:\n", e);
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} else {
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throw e;
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}
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}
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}
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const bytes = await module.arrayBuffer();
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return await WebAssembly.instantiate(bytes, imports);
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} else {
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const instance = await WebAssembly.instantiate(module, imports);
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if (instance instanceof WebAssembly.Instance) {
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return { instance, module };
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} else {
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return instance;
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}
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}
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}
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function __wbg_get_imports() {
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const imports = {};
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imports.wbg = {};
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imports.wbg.__wbindgen_init_externref_table = function() {
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const table = wasm.__wbindgen_export_0;
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const offset = table.grow(4);
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table.set(0, undefined);
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table.set(offset + 0, undefined);
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table.set(offset + 1, null);
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table.set(offset + 2, true);
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table.set(offset + 3, false);
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;
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};
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return imports;
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}
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function __wbg_init_memory(imports, memory) {
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}
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function __wbg_finalize_init(instance, module) {
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wasm = instance.exports;
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__wbg_init.__wbindgen_wasm_module = module;
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cachedUint8ArrayMemory0 = null;
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wasm.__wbindgen_start();
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return wasm;
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}
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function initSync(module) {
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if (wasm !== undefined) return wasm;
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if (typeof module !== 'undefined') {
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if (Object.getPrototypeOf(module) === Object.prototype) {
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({module} = module)
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} else {
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console.warn('using deprecated parameters for `initSync()`; pass a single object instead')
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}
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}
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const imports = __wbg_get_imports();
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__wbg_init_memory(imports);
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if (!(module instanceof WebAssembly.Module)) {
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module = new WebAssembly.Module(module);
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}
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const instance = new WebAssembly.Instance(module, imports);
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return __wbg_finalize_init(instance, module);
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}
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async function __wbg_init(module_or_path) {
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if (wasm !== undefined) return wasm;
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if (typeof module_or_path !== 'undefined') {
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if (Object.getPrototypeOf(module_or_path) === Object.prototype) {
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({module_or_path} = module_or_path)
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} else {
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console.warn('using deprecated parameters for the initialization function; pass a single object instead')
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}
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}
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if (typeof module_or_path === 'undefined' && typeof script_src !== 'undefined') {
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module_or_path = script_src.replace(/\.js$/, '_bg.wasm');
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}
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const imports = __wbg_get_imports();
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if (typeof module_or_path === 'string' || (typeof Request === 'function' && module_or_path instanceof Request) || (typeof URL === 'function' && module_or_path instanceof URL)) {
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module_or_path = fetch(module_or_path);
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}
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__wbg_init_memory(imports);
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const { instance, module } = await __wbg_load(await module_or_path, imports);
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return __wbg_finalize_init(instance, module);
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}
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wasm_bindgen = Object.assign(__wbg_init, { initSync }, __exports);
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})();
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// https://caniuse.com/mdn-javascript_builtins_uint8array_frombase64 its at 60% in oct 2025
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@ -163,126 +389,8 @@ const base64WASM = "AGFzbQEAAAABVw1gAn9/AGACf38Bf2ADf39/AX9gA39/fwBgAX8AYAR/f39/
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const wasmBinary = Uint8Array.fromBase64(base64WASM);
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scryptPromise = WebAssembly.instantiate(wasmBinary, {}).then(instantiatedModule => {
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wasm = instantiatedModule.instance.exports;
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scrypt = wasm_bindgen.scrypt;
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scryptPromise = wasm_bindgen({module_or_path: wasmBinary});
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let WASM_VECTOR_LEN = 0;
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let cachedUint8ArrayMemory0 = null;
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function getUint8ArrayMemory0() {
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if (cachedUint8ArrayMemory0 === null || cachedUint8ArrayMemory0.byteLength === 0) {
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cachedUint8ArrayMemory0 = new Uint8Array(wasm.memory.buffer);
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}
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return cachedUint8ArrayMemory0;
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}
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const lTextEncoder = typeof TextEncoder === 'undefined' ? (0, module.require)('util').TextEncoder : TextEncoder;
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let cachedTextEncoder = new lTextEncoder('utf-8');
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const encodeString = (typeof cachedTextEncoder.encodeInto === 'function'
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? function (arg, view) {
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return cachedTextEncoder.encodeInto(arg, view);
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}
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: function (arg, view) {
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const buf = cachedTextEncoder.encode(arg);
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view.set(buf);
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return {
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read: arg.length,
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written: buf.length
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};
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});
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function passStringToWasm0(arg, malloc, realloc) {
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if (realloc === undefined) {
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const buf = cachedTextEncoder.encode(arg);
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const ptr = malloc(buf.length, 1) >>> 0;
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getUint8ArrayMemory0().subarray(ptr, ptr + buf.length).set(buf);
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WASM_VECTOR_LEN = buf.length;
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return ptr;
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}
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let len = arg.length;
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let ptr = malloc(len, 1) >>> 0;
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const mem = getUint8ArrayMemory0();
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let offset = 0;
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for (; offset < len; offset++) {
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const code = arg.charCodeAt(offset);
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if (code > 0x7F) break;
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mem[ptr + offset] = code;
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}
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if (offset !== len) {
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if (offset !== 0) {
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arg = arg.slice(offset);
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}
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ptr = realloc(ptr, len, len = offset + arg.length * 3, 1) >>> 0;
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const view = getUint8ArrayMemory0().subarray(ptr + offset, ptr + len);
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const ret = encodeString(arg, view);
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offset += ret.written;
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ptr = realloc(ptr, len, offset, 1) >>> 0;
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}
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WASM_VECTOR_LEN = offset;
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return ptr;
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}
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const lTextDecoder = typeof TextDecoder === 'undefined' ? (0, module.require)('util').TextDecoder : TextDecoder;
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let cachedTextDecoder = new lTextDecoder('utf-8', { ignoreBOM: true, fatal: true });
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cachedTextDecoder.decode();
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function getStringFromWasm0(ptr, len) {
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ptr = ptr >>> 0;
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return cachedTextDecoder.decode(getUint8ArrayMemory0().subarray(ptr, ptr + len));
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}
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/**
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* @param {string} password
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* @param {string} salt
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* @param {number} n
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* @param {number} r
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* @param {number} p
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* @param {number} dklen
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* @returns {string}
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*/
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scrypt = function(password, salt, n, r, p, dklen) {
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let deferred3_0;
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let deferred3_1;
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try {
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const ptr0 = passStringToWasm0(password, wasm.__wbindgen_malloc, wasm.__wbindgen_realloc);
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const len0 = WASM_VECTOR_LEN;
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const ptr1 = passStringToWasm0(salt, wasm.__wbindgen_malloc, wasm.__wbindgen_realloc);
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const len1 = WASM_VECTOR_LEN;
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const ret = wasm.scrypt(ptr0, len0, ptr1, len1, n, r, p, dklen);
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deferred3_0 = ret[0];
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deferred3_1 = ret[1];
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return getStringFromWasm0(ret[0], ret[1]);
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} finally {
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wasm.__wbindgen_free(deferred3_0, deferred3_1, 1);
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}
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}
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function __wbindgen_init_externref_table() {
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const table = wasm.__wbindgen_export_0;
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const offset = table.grow(4);
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table.set(0, undefined);
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table.set(offset + 0, undefined);
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table.set(offset + 1, null);
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table.set(offset + 2, true);
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table.set(offset + 3, false);
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;
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};
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});
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@ -67,6 +67,7 @@ scryptPromise = wasm_bindgen({module_or_path: "/static/scrypt.wasm"});
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## This is neccesary when the pow-bot-deterrent static assets can't be hosted on the same origin
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## However, it also means that the site can't use a content-security-policy which restricts external javascript
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echo '
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// THIS FILE IS GENERATED AUTOMATICALLY
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// Dont edit this file by hand.
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@ -75,8 +76,13 @@ echo '
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cat ../proofOfWorkerStub.js | tail -n +6 >> ../static/proofOfWorker_CrossOrigin.js
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# wasm was defined at the top of proofOfWorker.js, so don't define it again.
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cat scrypt-wasm/pkg/scrypt_wasm.js | grep -v 'let wasm = ' >> ../static/proofOfWorker_CrossOrigin.js
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# see: https://rustwasm.github.io/docs/wasm-bindgen/examples/without-a-bundler.html
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echo '
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// https://caniuse.com/mdn-javascript_builtins_uint8array_frombase64 its at 60% in oct 2025
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if (!Uint8Array.fromBase64) {
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Uint8Array.fromBase64 = function(base64String) {
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@ -93,27 +99,14 @@ const base64WASM = "'"$(cat ../static/scrypt.wasm | base64 -w 0)"'";
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const wasmBinary = Uint8Array.fromBase64(base64WASM);
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scryptPromise = WebAssembly.instantiate(wasmBinary, {}).then(instantiatedModule => {
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wasm = instantiatedModule.instance.exports;
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scrypt = wasm_bindgen.scrypt;
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scryptPromise = wasm_bindgen({module_or_path: wasmBinary});
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' >> ../static/proofOfWorker_CrossOrigin.js
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# wasm was defined at the top of proofOfWorker.js, so don't define it again.
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# tail -n +5 skips the first 4 lines.
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# we are trying to skip all of:
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#
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# let wasm;
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# export function __wbg_set_wasm(val) {
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# wasm = val;
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# }
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#
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cat scrypt-wasm/pkg/scrypt_wasm_bg.js | tail -n +5 \
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| sed 's/export function scrypt/scrypt = function/' \
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| sed 's/^export //' \
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| sed -E 's/^/ /' >> ../static/proofOfWorker_CrossOrigin.js
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echo '
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});
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' >> ../static/proofOfWorker_CrossOrigin.js
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echo "Build successful!"
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Block a user