Tiago Rangel
1 line
12 KiB
JavaScript
1 line
12 KiB
JavaScript
"use strict";!function(){let e;const t=(e,t=1e4)=>new Promise(((r,a)=>{const s=setTimeout((()=>{a(new Error("Initialize timeout"))}),t),i=()=>{e()?(clearTimeout(s),r()):setTimeout(i,500)};i()}));class r{#e="";#t=null;#r=null;#a=navigator.hardwareConcurrency||8;#s=null;async initialize(){this.#e&&URL.revokeObjectURL(this.#e);try{await t((()=>!!e)),this.#e=URL.createObjectURL(new Blob([e],{type:"application/javascript"}))}catch(e){throw this.error("Failed to initialize worker"),e}}async solve(){await t((()=>!!this.#e)),this.dispatchEvent("progress",{progress:0});try{const e=this.#t.getAttribute("data-cap-api-endpoint");if(!e)throw new Error("Missing API endpoint");const{challenge:t,target:r,token:a}=await(await fetch(`${e}challenge`,{method:"POST"})).json(),s=await this.solveChallenges({challenge:t,target:r,token:a}),i=await(await fetch(`${e}redeem`,{method:"POST",body:JSON.stringify({token:a,solutions:s}),headers:{"Content-Type":"application/json"}})).json();if(!i.success)throw new Error("Invalid solution");this.dispatchEvent("progress",{progress:100}),this.dispatchEvent("solve",{token:i.token}),this.#s=i.token,this.#t.querySelector("input[name='cap-token']")&&(this.#t.querySelector("input[name='cap-token']").value=i.token),this.#r&&clearTimeout(this.#r);const n=new Date(i.expires).getTime()-Date.now();return n>0&&n<864e5?this.#r=setTimeout((()=>this.reset()),n):this.error("Invalid expiration time"),{success:!0,token:this.#s}}catch(e){throw this.error(e.message),e}}async solveChallenges({challenge:e,target:t}){const r=e.length;let a=0;const s=Array(this.#a).fill(null).map((()=>new Worker(this.#e))),i=([e,t],i)=>new Promise(((n,o)=>{const c=s[i],d=setTimeout((()=>{c.terminate(),s[i]=new Worker(this.#e),o(new Error("Worker timeout"))}),3e4);c.onmessage=({data:s})=>{s.found&&(clearTimeout(d),a++,this.dispatchEvent("progress",{progress:Math.round(a/r*100)}),n([e,t,s.nonce]))},c.onerror=e=>{clearTimeout(d),this.error(`Error in worker: ${e}`),o(e)},c.postMessage({salt:e,target:t})})),n=[];try{for(let t=0;t<e.length;t+=this.#a){const r=e.slice(t,Math.min(t+this.#a,e.length)),a=await Promise.all(r.map(((e,t)=>i(e,t))));n.push(...a)}}finally{s.forEach((e=>e.terminate()))}return n}reset(){this.#r&&(clearTimeout(this.#r),this.#r=null),this.dispatchEvent("reset"),this.#s=null,this.#t.querySelector("input[name='cap-token']")&&(this.#t.querySelector("input[name='cap-token']").value="")}error(e="Unknown error"){console.error("[Cap] Error:",e),this.dispatchEvent("error",{isCap:!0,message:e})}dispatchEvent(e,t={}){const r=new CustomEvent(e,{bubbles:!0,composed:!0,detail:t});this.#t.dispatchEvent(r)}setElement(e){this.#t=e}setWorkersCount(e){const t=parseInt(e,10),r=Math.min(navigator.hardwareConcurrency||8,16);this.#a=!isNaN(t)&&t>0&&t<=r?t:navigator.hardwareConcurrency||8}getToken(){return this.#s}cleanup(){this.#r&&(clearTimeout(this.#r),this.#r=null),this.#e&&(URL.revokeObjectURL(this.#e),this.#e="")}}class a extends HTMLElement{#i=new r;#n;#o;#c;#d=!1;eventHandlers;static get observedAttributes(){return["onsolve","onprogress","onreset","onerror","workers"]}constructor(){super(),this.eventHandlers&&this.eventHandlers.forEach(((e,t)=>{this.removeEventListener(t.slice(2),e)})),this.eventHandlers=new Map,this.boundHandleProgress=this.handleProgress.bind(this),this.boundHandleSolve=this.handleSolve.bind(this),this.boundHandleError=this.handleError.bind(this),this.boundHandleReset=this.handleReset.bind(this)}attributeChangedCallback(e,t,r){if(e.startsWith("on")){const t=e.slice(2),a=this.eventHandlers.get(e);if(a&&this.removeEventListener(t,a),r){const r=t=>{const r=this.getAttribute(e);"function"==typeof window[r]&&window[r].call(this,t)};this.eventHandlers.set(e,r),this.addEventListener(t,r)}}}async connectedCallback(){this.#c=this,this.#n=this.attachShadow({mode:"open"}),this.#i.setElement(this),this.#o=document.createElement("div"),this.createUI(),this.addEventListeners(),await this.#i.initialize(),this.#o.removeAttribute("disabled");const e=this.getAttribute("data-cap-worker-count");this.#i.setWorkersCount(parseInt(e)?parseInt(e,10):navigator.hardwareConcurrency||8),this.#c.innerHTML='<input type="hidden" name="cap-token">'}createUI(){this.#o.classList.add("captcha"),this.#o.setAttribute("role","button"),this.#o.setAttribute("tabindex","0"),this.#o.setAttribute("disabled","true"),this.#o.innerHTML='<div class="checkbox"></div><p>I\'m a human</p><a href="#" class="credits" target="_blank"><span>Secured by </span>Cap</a>',this.#n.innerHTML='<style>.captcha{background-color:var(--cap-background);border:1px solid var(--cap-border-color);border-radius:var(--cap-border-radius);width:var(--cap-widget-width);display:flex;align-items:center;padding:var(--cap-widget-padding);gap:var(--cap-gap);cursor:pointer;transition:filter var(--cap-transition-duration),transform var(--cap-transition-duration);position:relative;-webkit-tap-highlight-color:rgba(255,255,255,0);overflow:hidden;color:var(--cap-color)}.captcha:hover{filter:var(--cap-hover-filter)}.captcha:not([disabled]):active{transform:scale(var(--cap-active-scale))}.checkbox{width:var(--cap-checkbox-size);height:var(--cap-checkbox-size);border:var(--cap-checkbox-border);border-radius:var(--cap-checkbox-border-radius);background-color:var(--cap-checkbox-background);transition:opacity var(--cap-transition-duration);margin-top:var(--cap-checkbox-margin);margin-bottom:var(--cap-checkbox-margin)}.captcha *{font-family:var(--cap-font)}.captcha p{margin:0;font-weight:500;font-size:15px;user-select:none;transition:opacity var(--cap-transition-duration)}.captcha[data-state=verifying] .checkbox{background: none;display:flex;align-items:center;justify-content:center;transform: scale(1.1);border: none;border-radius: 50%;background: conic-gradient(var(--cap-spinner-color) 0%, var(--cap-spinner-color) var(--progress, 0%), var(--cap-spinner-background-color) var(--progress, 0%), var(--cap-spinner-background-color) 100%);position: relative;}.captcha[data-state=verifying] .checkbox::after {content: "";background-color: var(--cap-background);width: calc(100% - var(--cap-spinner-thickness));height: calc(100% - var(--cap-spinner-thickness));border-radius: 50%;margin:calc(var(--cap-spinner-thickness) / 2)}.captcha[data-state=done] .checkbox{border:1px solid transparent;background-image:var(--cap-checkmark);background-size:cover}.captcha[data-state=error] .checkbox{border:1px solid transparent;background-image:var(--cap-error-cross);background-size:cover}.captcha[disabled]{\ncursor:not-allowed}.captcha[disabled][data-state=verifying]{cursor:progress}.captcha[disabled][data-state=done]{cursor:default}.captcha .credits{position:absolute;bottom:10px;right:10px;font-size:var(--cap-credits-font-size);color:var(--cap-color);opacity:var(--cap-opacity-hover)}.captcha .credits span{display:none;text-decoration:underline}.captcha .credits:hover span{display:inline-block}</style>',this.#n.appendChild(this.#o)}addEventListeners(){this.#o.querySelector("a").addEventListener("click",(e=>{e.stopPropagation(),e.preventDefault(),window.open("#","_blank")})),this.#o.addEventListener("click",(()=>{this.#o.hasAttribute("disabled")||this.solve()})),this.addEventListener("progress",this.boundHandleProgress),this.addEventListener("solve",this.boundHandleSolve),this.addEventListener("error",this.boundHandleError),this.addEventListener("reset",this.boundHandleReset)}async solve(){if(!this.#d)try{this.#d=!0,this.updateUI("verifying","Verifying...",!0);return await this.#i.solve()}finally{this.#d=!1}}updateUI(e,t,r=!1){this.#o.setAttribute("data-state",e),this.#o.querySelector("p").innerText=t,r?this.#o.setAttribute("disabled","true"):this.#o.removeAttribute("disabled")}handleProgress(e){const t=this.#o.querySelector("p");t&&(this.#o.querySelector(".checkbox").style.setProperty("--progress",`${e.detail.progress}%`),t.innerText=`Verifying... ${e.detail.progress}%`),this.executeAttributeCode("onprogress",e)}handleSolve(e){this.updateUI("done","You're a human",!0),this.executeAttributeCode("onsolve",e)}handleError(e){this.updateUI("error","Error. Try again."),this.executeAttributeCode("onerror",e)}handleReset(e){this.updateUI("","I'm a human"),this.executeAttributeCode("onreset",e)}executeAttributeCode(e,t){const r=this.getAttribute(e);if(!r)return;new Function("event",r).call(this,t)}reset(){this.#i.reset()}get token(){return this.#i.getToken()}disconnectedCallback(){this.removeEventListener("progress",this.boundHandleProgress),this.removeEventListener("solve",this.boundHandleSolve),this.removeEventListener("error",this.boundHandleError),this.removeEventListener("reset",this.boundHandleReset),this.eventHandlers.forEach(((e,t)=>{this.removeEventListener(t.slice(2),e)})),this.eventHandlers.clear(),this.#n&&(this.#n.innerHTML=""),this.#i.reset(),this.#i.cleanup()}}class s{constructor(e,t={}){let a=new r,s=e||document.createElement("div");e||(s.style.display="none"),Object.entries(t).forEach((([e,t])=>{s.setAttribute(e,t)})),t.apiEndpoint&&s.setAttribute("data-cap-api-endpoint",t.apiEndpoint),a.setElement(s),a.setWorkersCount(t.workers||navigator.hardwareConcurrency||8),a.initialize(),this.solve=async function(){return await a.solve()},this.reset=function(){a.reset()},this.addEventListener=function(e,t){s.addEventListener(e,t)},Object.defineProperty(this,"token",{get:()=>a.getToken(),configurable:!0,enumerable:!0})}}const i=new CSSStyleSheet;i.replaceSync('html{--cap-font:system,-apple-system,"BlinkMacSystemFont",".SFNSText-Regular","San Francisco","Roboto","Segoe UI","Helvetica Neue","Lucida Grande","Ubuntu","arial",sans-serif;--cap-color:#212121;--cap-background:#fdfdfd;--cap-border-color:#dddddd8f;--cap-border-radius:14px;--cap-checkbox-border:1px solid #aaaaaad1;--cap-checkbox-border-radius:6px;--cap-checkbox-background:#fafafa91;--cap-widget-width:240px;--cap-widget-padding:14px;--cap-checkbox-size:24px;--cap-checkbox-margin:2px;--cap-transition-duration:0.2s;--cap-gap:15px;--cap-opacity-hover:0.8;--cap-hover-filter:brightness(97%);--cap-active-scale:0.98;--cap-credits-font-size:12px;--cap-spinner-color:black;--cap-spinner-background-color:#eee;--cap-error-cross:url("data:image/svg+xml,%3Csvg xmlns=\'http://www.w3.org/2000/svg\' width=\'96\' height=\'96\' viewBox=\'0 0 24 24\'%3E%3Cpath fill=\'%23f55b50\' d=\'M11 15h2v2h-2zm0-8h2v6h-2zm1-5C6.47 2 2 6.5 2 12a10 10 0 0 0 10 10a10 10 0 0 0 10-10A10 10 0 0 0 12 2m0 18a8 8 0 0 1-8-8a8 8 0 0 1 8-8a8 8 0 0 1 8 8a8 8 0 0 1-8 8\'/%3E%3C/svg%3E");--cap-checkmark:url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%2224%22%20height%3D%2224%22%20viewBox%3D%220%200%2024%2024%22%3E%3Cstyle%3E%40keyframes%20anim%7B0%25%7Bstroke-dashoffset%3A23.21320343017578px%7Dto%7Bstroke-dashoffset%3A0%7D%7D%3C%2Fstyle%3E%3Cpath%20fill%3D%22none%22%20stroke%3D%22%2300a67d%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%20stroke-width%3D%222%22%20d%3D%22m5%2012%205%205L20%207%22%20style%3D%22stroke-dashoffset%3A0%3Bstroke-dasharray%3A23.21320343017578px%3Banimation%3Aanim%20.5s%20ease%22%2F%3E%3C%2Fsvg%3E");--cap-spinner-thickness:5px;}'),document.adoptedStyleSheets.push(i);const n=function(){let e;self.onmessage=async({data:{salt:t,target:r}})=>{e||(e=await hashwasm.createSHA256());let a=0;let s=0;const i=new Uint8Array(128),n=new TextEncoder;for(;;)try{for(let s=0;s<5e4;s++){const s=t+a.toString(),o=n.encode(s);i.set(o),e.init(),e.update(i.subarray(0,o.length));if(e.digest("hex").startsWith(r))return void self.postMessage({nonce:a,found:!0});a++}s+=5e4,s>=5e5&&(self.postMessage({nonce:a,found:!1}),s=0)}catch(e){return void self.postMessage({found:!1,error:e.message})}}};setTimeout((async function(){e=await(await fetch("https://cdn.jsdelivr.net/npm/@cap.js/widget/wasm-hashes.min.js")).text()+n.toString().replace(/^function\s*\([^\)]*\)\s*{|\}$/g,"").trim()}),1),window.Cap=s,customElements.get("cap-widget")?console.warn("The cap-widget element has already been defined. Skipping re-defining it."):customElements.define("cap-widget",a),"object"==typeof exports&&"undefined"!=typeof module?module.exports=s:"function"==typeof define&&define.amd&&define([],(function(){return s})),"undefined"!=typeof exports&&(exports.default=s)}(); |