survey/vendor/pow/mcaptcha_browser_bg.js
realaravinth 2609ade2a5
Setup ts compilation
- import frontend code from mCaptcha/benchs
- setup TS compilation workflow
- import vendor code from mCaptcha/mCaptcha/browser
- rewrite bench.js import in bundle.js to include file's hash
2021-10-12 14:02:34 +05:30

139 lines
4.2 KiB
JavaScript

import * as wasm from './mcaptcha_browser_bg.wasm';
let WASM_VECTOR_LEN = 0;
let cachegetUint8Memory0 = null;
function getUint8Memory0() {
if (cachegetUint8Memory0 === null || cachegetUint8Memory0.buffer !== wasm.memory.buffer) {
cachegetUint8Memory0 = new Uint8Array(wasm.memory.buffer);
}
return cachegetUint8Memory0;
}
const lTextEncoder = typeof TextEncoder === 'undefined' ? (0, module.require)('util').TextEncoder : TextEncoder;
let cachedTextEncoder = new lTextEncoder('utf-8');
const encodeString = (typeof cachedTextEncoder.encodeInto === 'function'
? function (arg, view) {
return cachedTextEncoder.encodeInto(arg, view);
}
: function (arg, view) {
const buf = cachedTextEncoder.encode(arg);
view.set(buf);
return {
read: arg.length,
written: buf.length
};
});
function passStringToWasm0(arg, malloc, realloc) {
if (realloc === undefined) {
const buf = cachedTextEncoder.encode(arg);
const ptr = malloc(buf.length);
getUint8Memory0().subarray(ptr, ptr + buf.length).set(buf);
WASM_VECTOR_LEN = buf.length;
return ptr;
}
let len = arg.length;
let ptr = malloc(len);
const mem = getUint8Memory0();
let offset = 0;
for (; offset < len; offset++) {
const code = arg.charCodeAt(offset);
if (code > 0x7F) break;
mem[ptr + offset] = code;
}
if (offset !== len) {
if (offset !== 0) {
arg = arg.slice(offset);
}
ptr = realloc(ptr, len, len = offset + arg.length * 3);
const view = getUint8Memory0().subarray(ptr + offset, ptr + len);
const ret = encodeString(arg, view);
offset += ret.written;
}
WASM_VECTOR_LEN = offset;
return ptr;
}
let cachegetInt32Memory0 = null;
function getInt32Memory0() {
if (cachegetInt32Memory0 === null || cachegetInt32Memory0.buffer !== wasm.memory.buffer) {
cachegetInt32Memory0 = new Int32Array(wasm.memory.buffer);
}
return cachegetInt32Memory0;
}
const lTextDecoder = typeof TextDecoder === 'undefined' ? (0, module.require)('util').TextDecoder : TextDecoder;
let cachedTextDecoder = new lTextDecoder('utf-8', { ignoreBOM: true, fatal: true });
cachedTextDecoder.decode();
function getStringFromWasm0(ptr, len) {
return cachedTextDecoder.decode(getUint8Memory0().subarray(ptr, ptr + len));
}
/**
* generate proof-of-work
* ```rust
* fn main() {
* use mcaptcha_browser::*;
* use pow_sha256::*;
*
*
* // salt using which PoW should be computed
* const SALT: &str = "yrandomsaltisnotlongenoug";
* // one-time phrase over which PoW should be computed
* const PHRASE: &str = "ironmansucks";
* // and the difficulty factor
* const DIFFICULTY: u32 = 1000;
*
* // currently gen_pow() returns a JSON formated string to better communicate
* // with JavaScript. See [PoW<T>][pow_sha256::PoW] for schema
* let serialised_work = gen_pow(SALT.into(), PHRASE.into(), DIFFICULTY);
*
*
* let work: Work = serde_json::from_str(&serialised_work).unwrap();
*
* let work = PoWBuilder::default()
* .result(work.result)
* .nonce(work.nonce)
* .build()
* .unwrap();
*
* let config = ConfigBuilder::default().salt(SALT.into()).build().unwrap();
* assert!(config.is_valid_proof(&work, &PHRASE.to_string()));
* assert!(config.is_sufficient_difficulty(&work, DIFFICULTY));
* }
* ```
* @param {string} salt
* @param {string} phrase
* @param {number} difficulty_factor
* @returns {string}
*/
export function gen_pow(salt, phrase, difficulty_factor) {
try {
const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
var ptr0 = passStringToWasm0(salt, wasm.__wbindgen_malloc, wasm.__wbindgen_realloc);
var len0 = WASM_VECTOR_LEN;
var ptr1 = passStringToWasm0(phrase, wasm.__wbindgen_malloc, wasm.__wbindgen_realloc);
var len1 = WASM_VECTOR_LEN;
wasm.gen_pow(retptr, ptr0, len0, ptr1, len1, difficulty_factor);
var r0 = getInt32Memory0()[retptr / 4 + 0];
var r1 = getInt32Memory0()[retptr / 4 + 1];
return getStringFromWasm0(r0, r1);
} finally {
wasm.__wbindgen_add_to_stack_pointer(16);
wasm.__wbindgen_free(r0, r1);
}
}