safetynet/tests/agent-adapters.test.mjs

import test from 'node:test';
import assert from 'node:assert/strict';
import vm from 'node:vm';
import {createRequire} from 'node:module';
import {inspect as inspectPolicy} from '../packages/core/policy.mjs';
import {AgentsSchema} from '../packages/core/security.mjs';
const {createAgentAdapters}=createRequire(import.meta.url)('../apps/browser/agent-adapters.cjs');
function fixture(overrides={}) {
  let url='https://work.example/',version=1,script,generation=0;
  const context={ready:true,policy:{version:1,dlp:{rules:[{id:'corporate',kind:'literal'}]},agents:{enabled:true,allowSensitiveRead:false,allowedHosts:[],scopes:['sessions','read','click','type','navigate','ai']}},destinationAllowed:()=>true,webContents:{getURL:()=>url,executeJavaScript:async code=>{script=code;return {text:'Public material',completed:true};}}};
  const id='71911cdc-a390-4e73-a604-d98d05fd52a5';
  const capture=sessionId=>sessionId!==undefined && sessionId!==id?null:{...context,sessionId:id,foreground:true,policyVersion:version,token:{generation,version,url}};
  const callbacks={getContext:capture,getSessions:()=>[{id,title:'Managed session',foreground:true}],contextCurrent:token=>token.generation===generation&&token.version===version&&token.url===url,navigate:async target=>{url=target;generation++;return capture(id);},ai:async()=>({text:'Helpful answer',token:'secret'}),inspect:async()=>({decision:'allow'}),audit:async()=>{},...overrides};
  return {actions:createAgentAdapters(callbacks),context,id,setVersion:n=>version=n,setUrl:value=>{url=value;generation++;},invalidate:()=>generation++,getScript:()=>script};
}
test('managed session metadata and outputs never include credentials',async()=>{
  const {actions,id}=fixture();
  assert.deepEqual(await actions.sessions(),[{id,title:'Managed session',foreground:true}]);
  assert.deepEqual(await actions.read({}),{text:'Public material'});
  assert.deepEqual(await actions.ai({prompt:'Hello'}),{text:'Helpful answer'});
  await assert.rejects(actions.read({sessionId:'other'}),/unavailable|Unknown/);
});
test('policy changes, navigation races and cancellation suppress read results',async()=>{
  for(const mutation of ['policy','url','abort']) {
    const controller=new AbortController();const f=fixture();
    f.context.webContents.executeJavaScript=async()=>{if(mutation==='policy')f.setVersion(2);if(mutation==='url')f.setUrl('https://evil.example/');if(mutation==='abort')controller.abort();return{text:'safe'};};
    await assert.rejects(f.actions.read({}, {signal:controller.signal}));
  }
});
test('inspection blocks sensitive reads; explicit read approval never overrides secret detection',async()=>{
  const f=fixture({inspect:async()=>({decision:'block',ruleId:'corporate'})});
  await assert.rejects(f.actions.read({}),/Company policy/);
  f.context.policy.agents.allowSensitiveRead=true;
  assert.equal((await f.actions.read({})).text,'Public material');
  f.context.webContents.executeJavaScript=async()=>({text:'password=hunter22'});
  await assert.rejects(f.actions.read({}),/Sensitive/);
});
test('fixed script excludes form content, hidden text and attributes',async()=>{
  const f=fixture();await f.actions.read({});
  const element=(excluded=false,hidden=false)=>({closest:selector=>selector.includes('input,textarea')&&excluded?{}:null,getAttribute:()=>null,parentElement:null,getClientRects:()=>hidden?[]:[{}]});
  const nodes=[{parentElement:element(),textContent:'Visible company text'},{parentElement:element(true),textContent:'Form secret'},{parentElement:element(false,true),textContent:'Hidden secret'}];
  let index=0;
  const result=vm.runInNewContext(f.getScript(),{location:{href:'https://work.example/'},document:{body:{},createTreeWalker:()=>({nextNode:()=>nodes[index++]})},NodeFilter:{SHOW_TEXT:4},getComputedStyle:()=>({display:'block',visibility:'visible',opacity:'1'})});
  assert.equal(result.text,'Visible company text');
});
test('typing script rejects password targets and treats text as data',async()=>{
  const f=fixture();await f.actions.type({selector:'#prompt',text:'";process.exit();//'});
  const node={type:'password',tagName:'INPUT',parentElement:null,getAttribute:()=>null,closest:()=>null,getClientRects:()=>[{}]};
  assert.throws(()=>vm.runInNewContext(f.getScript(),{location:{href:'https://work.example/'},document:{body:{},querySelector:()=>node},getComputedStyle:()=>({display:'block',visibility:'visible',opacity:'1'})}),/sensitive/);
  await assert.rejects(f.actions.type({selector:'input:has(*)',text:'x'}),/Invalid selector/);
});
test('navigate permits managed destination change but refuses non-web schemes',async()=>{
  const f=fixture();assert.deepEqual(await f.actions.navigate({url:'https://allowed.example/'}),{completed:true});
  await assert.rejects(f.actions.navigate({url:'file:///secret'}),/Destination/);
});
test('encoded built-in secrets and scanner failures never permit sensitive-read override',async()=>{
  for (const verdict of [{decision:'block',ruleId:'api-secret'},{decision:'block',ruleId:'uninspectable'},{decision:'block',ruleId:'size-limit'},{decision:'block',ruleId:'corporate',engine:'yara'},{decision:'block',ruleId:'corporate',malware:{decision:'block'}},{decision:'block',ruleId:'corporate',coverage:{complete:false}},{decision:'block',ruleId:'unknown'}]) {
    const f=fixture({inspect:async()=>verdict});f.context.policy.agents.allowSensitiveRead=true;
    f.context.webContents.executeJavaScript=async()=>({text:'sk%2D'+'a'.repeat(25)});
    await assert.rejects(f.actions.read({}),/Company policy/);
  }
});
test('real core percent-decoded credential verdict is preserved',async()=>{
  const policy={version:1,dlp:{maxBytes:10000,rules:[]},security:{content:{blockedPhrases:[]}}};
  const f=fixture({inspect:async text=>inspectPolicy(Buffer.from(text),policy)});
  f.context.policy.agents.allowSensitiveRead=true;
  const text='sk%2D'+'a'.repeat(25);f.context.webContents.executeJavaScript=async()=>({text});
  assert.equal(inspectPolicy(Buffer.from(text),policy).ruleId,'api-secret');
  await assert.rejects(f.actions.read({}),/Company policy/);
});
test('scopes and agent hosts rechecked before and after asynchronous operations',async()=>{
  const f=fixture();f.context.policy.agents.allowedHosts=['work.example'];
  f.setUrl('https://other.example/');await assert.rejects(f.actions.read({}),/Agent destination/);
  f.setUrl('https://work.example/');f.context.policy.agents.scopes=['sessions'];
  await assert.rejects(f.actions.read({}),/Agent scope/);
  f.context.policy.agents.scopes=['read'];
  f.context.webContents.executeJavaScript=async()=>{f.context.policy.agents.scopes=[];return{text:'safe'};};
  await assert.rejects(f.actions.read({}),/Agent scope/);
});
test('fixed DOM script rejects document replacement before any click side effect',async()=>{
  const f=fixture();await f.actions.click({selector:'#submit'});let selected=false;
  assert.throws(()=>vm.runInNewContext(f.getScript(),{location:{href:'https://other.example/'},document:{querySelector:()=>{selected=true;}}}),/Document changed/);
  assert.equal(selected,false);
});

test('same-URL reload, close and switch-away-and-back invalidate captured reads and AI',async()=>{
  for(const action of ['read','ai']) {
    for(const race of ['reload','close','switch']) {
      const f=fixture();
      const mutate=()=>{f.invalidate();if(race==='close')f.context.webContents.isDestroyed=()=>true;};
      if(action==='read')f.context.webContents.executeJavaScript=async()=>{mutate();return{text:'Public material'};};
      else {
        const g=fixture({ai:async()=>{g.invalidate();if(race==='close')g.context.webContents.isDestroyed=()=>true;return{text:'Public material'};}});
        await assert.rejects(g.actions.ai({prompt:'Hello'}),/changed|unavailable/);continue;
      }
      await assert.rejects(f.actions.read({}),/changed|unavailable/);
    }
  }
});

test('navigation cannot complete against another native identity or changed policy',async()=>{
  for(const kind of ['identity','policy']) {
    const f=fixture({navigate:async target=>{
      f.setUrl(target);
      return {...f.context,sessionId:f.id,token:{},policyVersion:kind==='policy'?2:1,webContents:kind==='identity'?{}:f.context.webContents};
    }});
    await assert.rejects(f.actions.navigate({url:'https://work.example/next'}),/changed/);
  }
});

test('inspection itself cannot outlive the captured tab generation',async()=>{
  const f=fixture({inspect:async()=>{f.invalidate();return{decision:'allow'};}});
  await assert.rejects(f.actions.read({sessionId:f.id}),/changed/);
});

test('session inventory and navigation work on the start page',async()=>{
  const f=fixture();f.setUrl('about:blank');
  assert.equal((await f.actions.sessions())[0].id,f.id);
  assert.deepEqual(await f.actions.navigate({url:'https://work.example/'}),{completed:true});
  f.context.policy.agents.scopes=[];
  await assert.rejects(f.actions.sessions(),/unavailable/);
});

test('an omitted ID captures foreground once instead of following later foreground changes',async()=>{
  const f=fixture();const calls=[];let foreground=f.id;
  const actions=createAgentAdapters({
    getContext:id=>{calls.push(id);return {ready:true,sessionId:id??foreground,foreground:true,token:{},policyVersion:1,policy:f.context.policy,webContents:f.context.webContents,destinationAllowed:()=>true};},
    getSessions:()=>[],contextCurrent:()=>true,navigate:async()=>{},ai:async()=>{},inspect:async()=>({decision:'allow'}),audit:async()=>{}
  });
  f.context.webContents.executeJavaScript=async()=>{foreground='8dc41a3d-c46e-4c35-ae4a-98cfcb3a3553';return{text:'Public material'};};
  await actions.read({});
  assert.deepEqual(calls,[undefined,f.id,f.id]);
});

test('background interactions fail before page code runs',async()=>{
  const f=fixture();let executed=false;
  const actions=createAgentAdapters({getContext:()=>({...f.context,sessionId:f.id,token:{},foreground:false}),getSessions:()=>[],contextCurrent:()=>true,navigate:async()=>{},ai:async()=>{},inspect:async()=>({decision:'allow'}),audit:async()=>{}});
  f.context.webContents.executeJavaScript=async()=>{executed=true;return{completed:true};};
  await assert.rejects(actions.click({selector:'#submit'}),/unavailable/);
  await assert.rejects(actions.type({selector:'#prompt',text:'test'}),/unavailable/);
  assert.equal(executed,false);
});

test('app controls require explicit new scopes and preserve typed trusted callback arguments',async()=>{
  let called=0;
  const f=fixture({appControls:{'settings:update':async args=>{called++;assert.deepEqual(args,{appearance:{mode:'dark'}});return{visible:true,appearance:args.appearance};}}});
  await assert.rejects(f.actions['settings:update']({appearance:{mode:'dark'}}),/scope/);
  assert.equal(called,0);f.context.policy.agents.scopes.push('settings:update');f.setUrl('about:blank');
  assert.equal((await f.actions['settings:update']({appearance:{mode:'dark'}})).appearance.mode,'dark');
  assert.equal(called,1);
});

test('app result is withheld after policy change and bookmark metadata must pass DLP',async()=>{
  const f=fixture({appControls:{'settings:get':async()=>{f.setVersion(2);return{visible:true};}}});
  f.context.policy.agents.scopes.push('settings:get');await assert.rejects(f.actions['settings:get']({}),/changed/);
  const g=fixture({appControls:{'bookmarks:list':async()=>({managed:[{title:'password=hunter22',url:'https://example.test/',folder:''}],personal:{items:[]}})}});
  g.context.policy.agents.scopes.push('bookmarks:list');await assert.rejects(g.actions['bookmarks:list']({}),/Sensitive/);
  const h=fixture({inspect:async()=>({decision:'block'}),appControls:{'bookmarks:list':async()=>({managed:[{title:'Confidential program',url:'https://example.test/',folder:''}],personal:{items:[]}})}});
  h.context.policy.agents.scopes.push('bookmarks:list');await assert.rejects(h.actions['bookmarks:list']({}),/Company policy/);
});

test('agent tab creation cannot bypass approved destination hosts',async()=>{
  let called=false;const f=fixture({appControls:{'tabs:create':async()=>{called=true;return{completed:true};}}});
  f.context.policy.agents.scopes.push('tabs:create');f.context.policy.agents.allowedHosts=['work.example'];
  await assert.rejects(f.actions['tabs:create']({url:'https://other.example/'}),/destination/);
  assert.equal(called,false);
});

test('whole-application policy capabilities are opt-in and unknown scopes are rejected',()=>{
  assert.deepEqual(AgentsSchema.parse({enabled:true}).scopes,['sessions']);
  const scopes=['application:state','settings:get','settings:update','bookmarks:list','bookmarks:mutate','tabs:create','tabs:activate','tabs:close','tabs:group'];
  assert.deepEqual(AgentsSchema.parse({enabled:true,scopes}).scopes,scopes);
  assert.throws(()=>AgentsSchema.parse({enabled:true,scopes:['policy:override']}));
});

test('structured agent inspection classifies field values and rejects policy races',async()=>{
 const f=fixture();f.context.policy.agents.scopes.push('inspect','scroll');
 f.context.webContents.executeJavaScript=async()=>({controls:[{selector:'#search',role:'input',label:'Search',value:'Public query',text:''}]});
 assert.equal((await f.actions.inspect({})).controls[0].value,'Public query');
 f.context.webContents.executeJavaScript=async()=>({controls:[{value:'password=hunter22'}]});
 await assert.rejects(f.actions.inspect({}),/Sensitive/);
 f.context.webContents.executeJavaScript=async()=>{f.setVersion(2);return{controls:[]};};
 await assert.rejects(f.actions.inspect({}),/changed/);
});
test('agent scroll is bounded and restricted to an interactive foreground session',async()=>{
 const f=fixture();f.context.policy.agents.scopes.push('scroll');
 assert.equal((await f.actions.scroll({x:0,y:200})).completed,true);
 await assert.rejects(f.actions.scroll({x:0,y:-1}),/Invalid scroll/);
});
test('structured DOM inspection excludes credentials and hidden inputs',async()=>{
 const f=fixture();f.context.policy.agents.scopes.push('inspect');
 f.context.webContents.executeJavaScript=async code=>{
  const element=(id,type,value,hidden=false)=>({id,type,value,tagName:'INPUT',parentElement:null,innerText:'',getAttribute:a=>a==='id'?id:null,closest:()=>null,getClientRects:()=>hidden?[]:[{}]});
  const elements=[element('search','text','Public value'),element('password','password','PRIVATE_PASSWORD_SENTINEL'),element('token','text','PRIVATE_TOKEN_SENTINEL'),element('hidden','text','HIDDEN_SENTINEL',true)];
  return vm.runInNewContext(code,{location:{href:'https://work.example/'},document:{body:{},querySelectorAll:s=>s.startsWith('#')?elements.filter(e=>'#'+e.id===s):elements},getComputedStyle:()=>({display:'block',visibility:'visible',opacity:'1'})});
 };
 const result=await f.actions.inspect({});assert.equal(result.controls.length,1);assert.equal(result.controls[0].selector,'#search');assert.equal(result.controls[0].value,'Public value');
});

function formFixture(node) {
  const f=fixture(); f.context.policy.agents.scopes.push('select','check');
  let clicks=0;
  class Select {} Object.defineProperty(Select.prototype,'value',{set(value){this.value=value;}});
  for(const option of node.options||[]) {option.getAttribute??=()=>null;option.parentElement??=node;}
  node.getAttribute ??= ()=>null; node.closest ??= ()=>null; node.getClientRects ??= ()=>[{}]; node.dispatchEvent ??= ()=>{};
  node.click ??= ()=>{clicks++;node.checked=!node.checked;};
  f.context.webContents.executeJavaScript=async code=>vm.runInNewContext(code,{location:{href:'https://work.example/'},document:{body:{},querySelector:()=>node,querySelectorAll:()=>[node]},getComputedStyle:e=>e.style??{display:'block',visibility:'visible',opacity:'1'},HTMLSelectElement:Select,Event:class {constructor(type){this.type=type;}}});
  return {...f,clicks:()=>clicks};
}
test('fixed select chooses a unique enabled existing option and checks hostile handlers',async()=>{
  const node={tagName:'SELECT',value:'a',options:[{value:'a'},{value:'b'}]};
  const f=formFixture(node);assert.equal((await f.actions.select({selector:'#choice',value:'b'})).completed,true);assert.equal(node.value,'b');
  node.options.push({value:'b',getAttribute:()=>null,parentElement:node});await assert.rejects(f.actions.select({selector:'#choice',value:'b'}),/ambiguous/);node.options.pop();
  node.options[1].disabled=true;await assert.rejects(f.actions.select({selector:'#choice',value:'b'}),/unavailable/);node.options[1].disabled=false;
  node.options[1].parentElement={disabled:true};await assert.rejects(f.actions.select({selector:'#choice',value:'b'}),/unavailable/);node.options[1].parentElement=node;
  node.options[1].getAttribute=a=>a==='data-sensitive'?'':null;await assert.rejects(f.actions.select({selector:'#choice',value:'b'}),/unavailable/);node.options[1].getAttribute=()=>null;
  node.options[1].parentElement={hidden:true,getAttribute:()=>null,parentElement:node};await assert.rejects(f.actions.select({selector:'#choice',value:'b'}),/unavailable/);node.options[1].parentElement=node;
  await assert.rejects(f.actions.select({selector:'#choice',value:'missing'}),/unavailable/);
  node.dispatchEvent=()=>{node.value='a';};await assert.rejects(f.actions.select({selector:'#choice',value:'b'}),/changed/);
});
test('checkbox check is idempotent, rejects radio and verifies hostile toggles',async()=>{
  const node={tagName:'INPUT',type:'checkbox',checked:false};const f=formFixture(node);
  await f.actions.check({selector:'#choice',checked:true});assert.equal(f.clicks(),1);
  await f.actions.check({selector:'#choice',checked:true});assert.equal(f.clicks(),1);
  await f.actions.check({selector:'#choice',checked:false});assert.equal(f.clicks(),2);
  node.type='radio';await assert.rejects(f.actions.check({selector:'#choice',checked:true}),/cannot be checked/);node.type='checkbox';
  node.click=()=>{};await assert.rejects(f.actions.check({selector:'#choice',checked:true}),/changed/);
  await assert.rejects(f.actions.check({selector:'#choice',checked:'true'}),/Invalid checked/);
});
test('select and check reject hidden, credential and disabled-ancestor targets',async()=>{
  for(const mode of ['select','check'])for(const kind of ['hidden','password','disabled','ancestor','sensitive-empty','sensitive-body']) {
    const node={tagName:mode==='select'?'SELECT':'INPUT',type:mode==='check'?'checkbox':'select-one',checked:false,options:[{value:'b'}]};const f=formFixture(node);
    if(kind==='sensitive-empty')node.getAttribute=a=>a==='data-sensitive'?'':null;
    if(kind==='sensitive-body')node.parentElement={parentElement:null,getAttribute:a=>a==='data-sensitive'?'':null};
    if(kind==='hidden')node.getClientRects=()=>[];
    if(kind==='password')node.getAttribute=a=>a==='name'?'password':null;
    if(kind==='disabled')node.closest=()=>({});
    if(kind==='ancestor')node.parentElement={parentElement:null,getAttribute:()=>null,style:{display:'none',visibility:'visible',opacity:'1'}};
    await assert.rejects(f.actions[mode]({selector:'#choice',value:'b',checked:true}),/unavailable|sensitive/);
  }
});
test('select and check retain native generation and scope checks around execution',async()=>{
  for(const mode of ['select','check']) {
    const f=fixture();f.context.policy.agents.scopes.push(mode);f.context.webContents.executeJavaScript=async()=>{f.invalidate();return {completed:true};};
    await assert.rejects(f.actions[mode]({selector:'#choice',value:'b',checked:true}),/changed/);
    const g=fixture();await assert.rejects(g.actions[mode]({selector:'#choice',value:'b',checked:true}),/scope/);
  }
});

test('structured inspection returns bounded safe dropdown choices and checkbox state',async()=>{
 const f=fixture();f.context.policy.agents.scopes.push('inspect');
 const base={parentElement:null,getAttribute:()=>null,closest:()=>null,getClientRects:()=>[{}]};
 const select={...base,id:'choice',tagName:'SELECT',value:'one',options:[]};
 select.options=[{...base,parentElement:select,value:'one',label:'One'},{...base,parentElement:select,value:'locked',label:'Locked',disabled:true},{...base,parentElement:select,value:'secret',label:'SECRET_SENTINEL',getAttribute:a=>a==='data-sensitive'?'':null}];
 const checkbox={...base,id:'accept',tagName:'INPUT',type:'checkbox',checked:true,value:'on'};const elements=[select,checkbox];
 f.context.webContents.executeJavaScript=async code=>vm.runInNewContext(code,{location:{href:'https://work.example/'},document:{body:{},querySelectorAll:s=>s.startsWith('#')?elements.filter(e=>'#'+e.id===s):elements},getComputedStyle:()=>({display:'block',visibility:'visible',opacity:'1'})});
 const result=await f.actions.inspect({});assert.equal(result.controls[0].options.length,2);assert.equal(result.controls[0].options[1].disabled,true);assert.equal(result.controls[1].checked,true);assert.equal(JSON.stringify(result).includes('SECRET_SENTINEL'),false);
});

test('native history refreshes intentional navigation while binding the original tab',async()=>{
  for(const action of ['back','forward','reload']) {
    let f,calls=0;
    f=fixture({history:async(mode,initial,{signal})=>{
      calls++;assert.equal(mode,action);assert.equal(initial.sessionId,f.id);assert.equal(signal,undefined);
      f.setUrl('https://work.example/history');
      return {completed:true,context:{...f.context,sessionId:f.id,foreground:true,policyVersion:1,token:{generation:1,version:1,url:'https://work.example/history'}}};
    }});
    f.context.policy.agents.scopes.push(action);
    assert.deepEqual(await f.actions[action]({}),{completed:true});assert.equal(calls,1);
  }
});

test('history actions require explicit scope, native callback and interactive foreground',async()=>{
  for(const action of ['back','forward','reload']) {
    const f=fixture();await assert.rejects(f.actions[action]({}),/scope/);
    f.context.policy.agents.scopes.push(action);await assert.rejects(f.actions[action]({}),/unavailable/);
    let called=false;
    const callbacks={getContext:()=>({...f.context,sessionId:f.id,foreground:false,token:{}}),getSessions:()=>[],contextCurrent:()=>true,navigate:async()=>{},history:async()=>{called=true;},ai:async()=>{},inspect:async()=>({decision:'allow'}),audit:async()=>{}};
    await assert.rejects(createAgentAdapters(callbacks)[action]({}),/unavailable/);assert.equal(called,false);
    callbacks.getContext=()=>({...f.context,sessionId:f.id,foreground:true,interactive:false,token:{}});
    await assert.rejects(createAgentAdapters(callbacks)[action]({}),/unavailable/);assert.equal(called,false);
  }
});

test('history suppresses cancellation, policy races, switched tabs and blocked final destinations',async()=>{
  for(const kind of ['abort','policy','identity','session','token','blocked','host','scheme','incomplete','scope']) {
    let f;const controller=new AbortController();
    f=fixture({history:async()=>{
      f.setUrl(kind==='scheme'?'file:///private':'https://work.example/history');
      if(kind==='abort')controller.abort();if(kind==='policy')f.setVersion(2);
      if(kind==='blocked')f.context.destinationAllowed=()=>false;
      if(kind==='host')f.context.policy.agents.allowedHosts=['other.example'];
      if(kind==='scope')f.context.policy.agents.scopes=[];
      return {completed:kind!=='incomplete',context:{...f.context,sessionId:kind==='session'?'other':f.id,foreground:true,webContents:kind==='identity'?{}:f.context.webContents,policyVersion:kind==='policy'?2:1,token:{generation:kind==='token'?0:1,version:1,url:'https://work.example/history'}}};
    }});
    f.context.policy.agents.scopes.push('back');
    await assert.rejects(f.actions.back({}, {signal:controller.signal}),/changed|unavailable|blocked|scope/);
  }
});

test('history can leave a start page but reload never invokes native callback there',async()=>{
  let called=0;const f=fixture({history:async()=>{called++;throw Error('Native target unavailable');}});
  f.context.policy.agents.scopes.push('back','forward','reload');f.setUrl('about:blank');
  await assert.rejects(f.actions.back({}),/Native target/);await assert.rejects(f.actions.forward({}),/Native target/);
  await assert.rejects(f.actions.reload({}),/destination blocked/);assert.equal(called,2);
});