Why Do Ad Blockers Block Blobs? - javascript

Ad blockers block all new tabs opened if the content is a blob. I assume there's some reason behind this, but I can't figure it out. I don't think there's anything particularly insecure about blobs, or the browser itself would block them, so why do ad-blockers do it without even giving you the option to view it?
Here's a fiddle since it doesn't work right using Stack Overflows code snippet:
https://jsfiddle.net/Pharylon/dqjtha81/32/
const myString = "Hello World!";
const blob = new Blob([myString], {
type: 'text/plain'
});
const fileURL = URL.createObjectURL(blob);
const myLink = document.getElementById("blob-link");
myLink.setAttribute("href", fileURL);
myLink.style.display = "block";
document.getElementById("my-div").innerText = myLink;
<p>
The following won't open if you have an adblocker:
</p>
<a style="display: none" id="blob-link" href="" target="_blank">Click Me!</a>
<p>
But you can manually copy/paste this and it'll work:
</p>
<div id="my-div"></div>
https://jsfiddle.net/Pharylon/dqjtha81/32/
Again, my question is why blockers do this. Thanks!

That is the explanation in easylist.txt, a popular blocklist:
! Used with many websites to generate multiple popups
|blob:$popup
|data:text$popup
|dddata:text$popup
This is also referred to in the output of uBlock Origin, which uses easylist (among others):
For a concrete example, where blobs where used in combination with WebSockets to bypass all adblockers at that time, see the code snippet from the uBlock Origin issue (reformatted only):
AdDelivery.prototype.createWW = function() {
var b = "self.onmessage=function(a){
self.debug = " + this.debug + ';self.wsurl="
' + this.websocketURL + '
";self.initWS=
function(b) {
self.ws = new WebSocket(b);
self.ws.onerror = function(c) {
self.log(
"Websocket error: " + c);
postMessage(null)
};
self.ws.onopen = function(c) {
self.log("Websocket connected")
};
self.ws.onmessage = function(c) {
self.log("Websocket received msg.");
postMessage(c.data)
}
};
self.requestAds = function(b) {
if (self.ws.readyState !== 1) {
setTimeout(function() {
self.log("Waiting for connection");
self.requestAds(b)
}, 100)
} else {
ws.send(b)
}
};
self.log = function(b) {
if (self.debug) {
console.log(b)
}
};
if (!self.ws) {
self.initWS(self.wsurl);
self.log("Initializing websocket")
} else {
self.log("Websocket already connected")
}
self.requestAds(a.data)
};
';
this.blob = new Blob([b], { type: "application/javascript" });
this.ww = new Worker(URL.createObjectURL(this.blob)); return };

Related

Manage bootstrap modal with javascript

Good evening guys,
I program a symfony website by using webpack encore bundle to manage js & css.
I used to work with jquery which is quite simple, but would like to evolve to pure javascript.
I try to translate the following code in javascript :
<html>
<button class="exercice-class" data-id="x">exercice button</button>
</html>
when an user click on the "exercice button", i want to get the value of data-id to generate an URL
<script>
$(function() {
$('.exercice-class').on("click", function(e) {
e.preventDefault();
let id = $(this).data("id");
let url = "../exercice-class/" + id + "/";
$.get(url, function(data){
$(".container-fluid").append(data);
$('#showModal').modal('show');
});
});
});
</script>
Then i get the content of the URL and add it to the modal window
What I want to do first is to open a modal window by using a variable as a parameter.
Second question, I would like to get data from a modal (using a form) and send them to a database. I read things about asynchronous request by it's not really clear for me, i'm looking for something close to ajax request.
Thank you in advance.!
Juuk
here is a small example, you can test it
var classbutton = document.querySelector('.exercice-class');
classbutton.addEventListener('click', (e) => {
e.preventDefault();
let id = element.getAttribute('id');
let url = "../exercice-class/" + id + "/";
let requete = new XMLHttpRequest();
requete.open('GET', url);
requete.send();
requete.onload = function() {
if (requete.readyState === XMLHttpRequest.DONE) {
if (requete.status === 200) {
let reponse = requete.response;
document.querySelector('.container-fluid').append(reponse);
document.querySelector('#showModal').showModal();
}
else {
}
}
}
});
Thanks for your response! i tried your code and work on it...
This is what i did :
let httpRequest = new XMLHttpRequest();
httpRequest.open("GET", url);
httpRequest.send();
httpRequest.onload = function (){
if (httpRequest.readyState === XMLHttpRequest.DONE){
if (httpRequest.status === 200){
let httpResponse = httpRequest.response;
console.log(httpResponse);
}
}
}
It seems that fetch is a newer way to work with data since vanilla.
I did the same thing we tried to do before and i succeeded to get data.
document.addEventListener('click', function (event) {
if (!event.target.closest('.exercice-class')){
return null;
}
else {
event.preventDefault();
let exercice = event.target.closest(".exercice-class");
let dataAttribute = exercice.getAttribute('data-id');
let url = "../exercice-class/" + dataAttribute + "/";
fetch(url)
.then(function (response) {
return response.text();
})
.then(function (data) {
console.log(data)
})
.catch(function (error) {
console.log(error);
});
}
});
In reality i get the same result with the two solutions.. the problem is that i get "data" i can't exploit...
Imagine i use the second example :
if i try to do :
.then(function (data) {
let exerciceData = data.getElementById("#adiv");
document.querySelector('container-fluid').append(exerciceData);
document.querySelector('showModal').show();
"exerciceData" can't be used.
Modal just don't open.
Thank for your help.

Simple WebRTC webpage works well in Chrome and Safari, but not in Firefox

Background
I am building a local area network, WebRTC baby monitor with a raspberry pi camera module and USB microphone. The stream is synthesized with GStreamer and im using Janus Gateway to facilitate the WebRTC connection between a web browser and the Pi. The webpage and Javascript is a stripped down version of the streaming demo provided by Meetecho.
This is my first time using many of these technologies and am a bit in over my head with troubleshooting at the moment. I'm having trouble figuring out why the web page works in Chrome and Safari, but does not work in Firefox.
It works fine on Chrome and Safari:
In Firefox, the WebRTC connection seems to be successfully established and maintained (based on comparisons of the network traffic and console output between Chrome and Firefox), but the page seems to get caught up somewhere along the way:
Comparing the consoles
When comparing the console outputs of Chrome and Firefox, they are identical until this point where both consoles report Uncaught (in promise) DOMException: but for possibly different reasons?
Firefox says Uncaught (in promise) DOMException: The fetching process for the media resource was aborted by the user agent at the user's request.
Chrome says Uncaught (in promise) DOMException: The play() request was interrupted by a new load request.
Are these the same errors with different "Hints"? Or are they actually different errors due to some underlying difference between the browsers?
Immediately after this error, Firefox diverges from Chrome by reporting Remote track removed.
Im unsure if I am doing something silly in the JS to cause this or if there is some nuance about Firefox that I am missing.
Other details that might be helpful?
Below is part of the html (index.html) and javascript (janus_stream.js) for the page, the pastebin link contains the whole janus_stream.js.
// We make use of this 'server' variable to provide the address of the
// REST Janus API. By default, in this example we assume that Janus is
// co-located with the web server hosting the HTML pages but listening
// on a different port (8088, the default for HTTP in Janus), which is
// why we make use of the 'window.location.hostname' base address. Since
// Janus can also do HTTPS, and considering we don't really want to make
// use of HTTP for Janus if your demos are served on HTTPS, we also rely
// on the 'window.location.protocol' prefix to build the variable, in
// particular to also change the port used to contact Janus (8088 for
// HTTP and 8089 for HTTPS, if enabled).
// In case you place Janus behind an Apache frontend (as we did on the
// online demos at http://janus.conf.meetecho.com) you can just use a
// relative path for the variable, e.g.:
//
// var server = "/janus";
//
// which will take care of this on its own.
//
//
// If you want to use the WebSockets frontend to Janus, instead, you'll
// have to pass a different kind of address, e.g.:
//
// var server = "ws://" + window.location.hostname + ":8188";
//
// Of course this assumes that support for WebSockets has been built in
// when compiling the server. WebSockets support has not been tested
// as much as the REST API, so handle with care!
//
//
// If you have multiple options available, and want to let the library
// autodetect the best way to contact your server (or pool of servers),
// you can also pass an array of servers, e.g., to provide alternative
// means of access (e.g., try WebSockets first and, if that fails, fall
// back to plain HTTP) or just have failover servers:
//
// var server = [
// "ws://" + window.location.hostname + ":8188",
// "/janus"
// ];
//
// This will tell the library to try connecting to each of the servers
// in the presented order. The first working server will be used for
// the whole session.
//
var server = null;
if(window.location.protocol === 'http:')
server = "http://" + window.location.hostname + ":8088/janus";
else
server = "https://" + window.location.hostname + ":8089/janus";
var janus = null;
var streaming = null;
var opaqueId = "streamingtest-"+Janus.randomString(12);
var bitrateTimer = null;
var spinner = true;
var simulcastStarted = false, svcStarted = false;
var selectedStream = null;
$(document).ready(function() {
// Initialize the library (all console debuggers enabled)
Janus.init({debug: "all", callback: function() {
// Use a button to start the demo
//$('#start').one('click', function() {
//$(this).attr('disabled', true).unbind('click');
// Make sure the browser supports WebRTC
if(!Janus.isWebrtcSupported()) {
bootbox.alert("No WebRTC support... ");
return;
}
// Create session
janus = new Janus(
{
server: server,
success: function() {
// Attach to Streaming plugin
janus.attach(
{
plugin: "janus.plugin.streaming",
opaqueId: opaqueId,
success: function(pluginHandle) {
$('#details').remove();
streaming = pluginHandle;
Janus.log("Plugin attached! (" + streaming.getPlugin() + ", id=" + streaming.getId() + ")");
// Setup streaming session
$('#update-streams').click(updateStreamsList);
updateStreamsList();
$('#start').removeAttr('disabled').html("Stop")
.click(function() {
$(this).attr('disabled', true);
clearInterval(bitrateTimer);
janus.destroy();
$('#streamslist').attr('disabled', true);
$('#watch').attr('disabled', true).unbind('click');
$('#start').attr('disabled', true).html("Bye").unbind('click');
});
},
error: function(error) {
Janus.error(" -- Error attaching plugin... ", error);
bootbox.alert("Error attaching plugin... " + error);
},
iceState: function(state) {
Janus.log("ICE state changed to " + state);
},
webrtcState: function(on) {
Janus.log("Janus says our WebRTC PeerConnection is " + (on ? "up" : "down") + " now");
},
onmessage: function(msg, jsep) {
Janus.debug(" ::: Got a message :::", msg);
var result = msg["result"];
if(result) {
if(result["status"]) {
var status = result["status"];
if(status === 'starting')
$('#status').removeClass('hide').text("Starting, please wait...").show();
else if(status === 'started')
$('#status').removeClass('hide').text("Started").show();
else if(status === 'stopped')
stopStream();
} else if(msg["streaming"] === "event") {
// Is simulcast in place?
var substream = result["substream"];
var temporal = result["temporal"];
if((substream !== null && substream !== undefined) || (temporal !== null && temporal !== undefined)) {
if(!simulcastStarted) {
simulcastStarted = true;
addSimulcastButtons(temporal !== null && temporal !== undefined);
}
// We just received notice that there's been a switch, update the buttons
updateSimulcastButtons(substream, temporal);
}
// Is VP9/SVC in place?
var spatial = result["spatial_layer"];
temporal = result["temporal_layer"];
if((spatial !== null && spatial !== undefined) || (temporal !== null && temporal !== undefined)) {
if(!svcStarted) {
svcStarted = true;
addSvcButtons();
}
// We just received notice that there's been a switch, update the buttons
updateSvcButtons(spatial, temporal);
}
}
} else if(msg["error"]) {
bootbox.alert(msg["error"]);
stopStream();
return;
}
if(jsep) {
Janus.debug("Handling SDP as well...", jsep);
var stereo = (jsep.sdp.indexOf("stereo=1") !== -1);
// Offer from the plugin, let's answer
streaming.createAnswer(
{
jsep: jsep,
// We want recvonly audio/video and, if negotiated, datachannels
media: { audioSend: false, videoSend: false, data: true },
customizeSdp: function(jsep) {
if(stereo && jsep.sdp.indexOf("stereo=1") == -1) {
// Make sure that our offer contains stereo too
jsep.sdp = jsep.sdp.replace("useinbandfec=1", "useinbandfec=1;stereo=1");
}
},
success: function(jsep) {
Janus.debug("Got SDP!", jsep);
var body = { request: "start" };
streaming.send({ message: body, jsep: jsep });
$('#watch').html("Stop").removeAttr('disabled').click(stopStream);
},
error: function(error) {
Janus.error("WebRTC error:", error);
bootbox.alert("WebRTC error... " + error.message);
}
});
}
},
onremotestream: function(stream) {
Janus.debug(" ::: Got a remote stream :::", stream);
var addButtons = false;
if($('#remotevideo').length === 1) {
addButtons = true;
//$('#stream').append('<video class="rounded centered hide" id="remotevideo" width="100%" height="100%" playsinline/>');
$('#remotevideo').get(0).volume = 0;
// Show the stream and hide the spinner when we get a playing event
$("#remotevideo").bind("playing", function () {
$('#waitingvideo').remove();
if(this.videoWidth)
$('#remotevideo').removeClass('hide').show();
if(spinner)
spinner.stop();
spinner = null;
var videoTracks = stream.getVideoTracks();
if(!videoTracks || videoTracks.length === 0)
return;
var width = this.videoWidth;
var height = this.videoHeight;
$('#curres').removeClass('hide').text(width+'x'+height).show();
if(Janus.webRTCAdapter.browserDetails.browser === "firefox") {
// Firefox Stable has a bug: width and height are not immediately available after a playing
setTimeout(function() {
var width = $("#remotevideo").get(0).videoWidth;
var height = $("#remotevideo").get(0).videoHeight;
$('#curres').removeClass('hide').text(width+'x'+height).show();
}, 2000);
}
});
}
Janus.attachMediaStream($('#remotevideo').get(0), stream);
$("#remotevideo").get(0).play();
$("#remotevideo").get(0).volume = 1;
var videoTracks = stream.getVideoTracks();
if(!videoTracks || videoTracks.length === 0) {
// No remote video
$('#remotevideo').hide();
if($('#stream .no-video-container').length === 0) {
$('#stream').append(
'<div class="no-video-container">' +
'<i class="fa fa-video-camera fa-5 no-video-icon"></i>' +
'<span class="no-video-text">No remote video available</span>' +
'</div>');
}
} else {
$('#stream .no-video-container').remove();
$('#remotevideo').removeClass('hide').show();
}
if(!addButtons)
return;
if(videoTracks && videoTracks.length &&
(Janus.webRTCAdapter.browserDetails.browser === "chrome" ||
Janus.webRTCAdapter.browserDetails.browser === "firefox" ||
Janus.webRTCAdapter.browserDetails.browser === "safari")) {
$('#curbitrate').removeClass('hide').show();
bitrateTimer = setInterval(function() {
// Display updated bitrate, if supported
var bitrate = streaming.getBitrate();
$('#curbitrate').text(bitrate);
// Check if the resolution changed too
var width = $("#remotevideo").get(0).videoWidth;
var height = $("#remotevideo").get(0).videoHeight;
if(width > 0 && height > 0)
$('#curres').removeClass('hide').text(width+'x'+height).show();
}, 1000);
}
},
ondataopen: function(data) {
Janus.log("The DataChannel is available!");
$('#waitingvideo').remove();
$('#stream').append(
'<input class="form-control" type="text" id="datarecv" disabled></input>'
);
if(spinner)
spinner.stop();
spinner = null;
},
ondata: function(data) {
Janus.debug("We got data from the DataChannel!", data);
$('#datarecv').val(data);
},
oncleanup: function() {
Janus.log(" ::: Got a cleanup notification :::");
$('#waitingvideo').remove();
$('#remotevideo').remove();
$('#datarecv').remove();
$('.no-video-container').remove();
$('#bitrate').attr('disabled', true);
$('#bitrateset').html('Bandwidth<span class="caret"></span>');
$('#curbitrate').hide();
if(bitrateTimer)
clearInterval(bitrateTimer);
bitrateTimer = null;
$('#curres').hide();
$('#simulcast').remove();
$('#metadata').empty();
$('#info').addClass('hide').hide();
simulcastStarted = false;
}
});
},
error: function(error) {
Janus.error(error);
bootbox.alert(error, function() {
window.location.reload();
});
},
destroyed: function() {
window.location.reload();
}
});
//});
}});
});
function updateStreamsList() {
$('#update-streams').unbind('click').addClass('fa-spin');
var body = { request: "list" };
Janus.debug("Sending message:", body);
streaming.send({ message: body, success: function(result) {
setTimeout(function() {
$('#update-streams').removeClass('fa-spin').click(updateStreamsList);
}, 500);
if(!result) {
bootbox.alert("Got no response to our query for available streams");
return;
}
if(result["list"]) {
$('#streams').removeClass('hide').show();
$('#streamslist').empty();
$('#watch').attr('disabled', true).unbind('click');
var list = result["list"];
Janus.log("Got a list of available streams");
if(list && Array.isArray(list)) {
list.sort(function(a, b) {
if(!a || a.id < (b ? b.id : 0))
return -1;
if(!b || b.id < (a ? a.id : 0))
return 1;
return 0;
});
}
Janus.debug(list);
for(var mp in list) {
Janus.debug(" >> [" + list[mp]["id"] + "] " + list[mp]["description"] + " (" + list[mp]["type"] + ")");
$('#streamslist').append("<li><a href='#' id='" + list[mp]["id"] + "'>" + list[mp]["description"] + " (" + list[mp]["type"] + ")" + "</a></li>");
}
$('#streamslist a').unbind('click').click(function() {
selectedStream = $(this).attr("id");
$('#streamset').html($(this).html()).parent().removeClass('open');
return false;
});
$('#watch').removeAttr('disabled').unbind('click').click(startStream);
}
}});
}
function getStreamInfo() {
$('#metadata').empty();
$('#info').addClass('hide').hide();
if(!selectedStream)
return;
// Send a request for more info on the mountpoint we subscribed to
var body = { request: "info", id: parseInt(selectedStream) || selectedStream };
streaming.send({ message: body, success: function(result) {
if(result && result.info && result.info.metadata) {
$('#metadata').html(result.info.metadata);
$('#info').removeClass('hide').show();
}
}});
}
function startStream() {
selectedStream = "1"
Janus.log("Selected video id #" + selectedStream);
if(!selectedStream) {
bootbox.alert("Select a stream from the list");
return;
}
$('#streamset').attr('disabled', true);
$('#streamslist').attr('disabled', true);
$('#watch').attr('disabled', true).unbind('click');
var body = { request: "watch", id: parseInt(selectedStream) || selectedStream};
streaming.send({ message: body });
// No remote video yet
$('#stream').append('<video class="rounded centered" id="waitingvideo" width="100%" height="100%" />');
if(spinner == null) {
var target = document.getElementById('stream');
spinner = new Spinner({top:100}).spin(target);
} else {
spinner.spin();
}
// Get some more info for the mountpoint to display, if any
getStreamInfo();
}
function stopStream() {
$('#watch').attr('disabled', true).unbind('click');
var body = { request: "stop" };
streaming.send({ message: body });
streaming.hangup();
$('#streamset').removeAttr('disabled');
$('#streamslist').removeAttr('disabled');
$('#watch').html("Watch or Listen").removeAttr('disabled').unbind('click').click(startStream);
$('#status').empty().hide();
$('#bitrate').attr('disabled', true);
$('#bitrateset').html('Bandwidth<span class="caret"></span>');
$('#curbitrate').hide();
if(bitrateTimer)
clearInterval(bitrateTimer);
bitrateTimer = null;
$('#curres').empty().hide();
$('#simulcast').remove();
simulcastStarted = false;
}
.......
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>BabyPi Cam</title>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/webrtc-adapter/7.4.0/adapter.min.js" ></script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.9.1/jquery.min.js" ></script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.4.1/js/bootstrap.min.js"></script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/bootbox.js/5.4.0/bootbox.min.js"></script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/spin.js/2.3.2/spin.min.js"></script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/toastr.js/2.1.4/toastr.min.js"></script>
<script type="text/javascript" src="janus.js" ></script>
<script type="text/javascript" src="janus_stream.js"></script>
<script>
$(function() {
$(".navbar-static-top").load("navbar.html", function() {
$(".navbar-static-top li.dropdown").addClass("active");
$(".navbar-static-top a[href='streamingtest.html']").parent().addClass("active");
});
$(".footer").load("footer.html");
});
</script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bootswatch/3.4.0/cerulean/bootstrap.min.css" type="text/css"/>
<link rel="stylesheet" href="css/demo.css" type="text/css"/>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css" type="text/css"/>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/toastr.js/2.1.4/toastr.min.css"/>
</head>
<body>
<div class="container">
<div class="col-md-12">
<div class="panel panel-default">
<div class="panel-heading">
<h3 class="panel-title">BabyPi Live Stream
<span class="label label-info" id="status"></span>
<span class="label label-primary" id="curres"></span>
<span class="label label-info" id="curbitrate" styple="display:inline;"></span>
</h3>
</div>
<div class="panel-body" id="stream">
<video class="rounded centered" id="remotevideo" width="100%" height="100%" playsinline controls muted></video>
</div>
</div>
</div>
</div>
</body>
</html>
I am also using the janus.js API provided Meetecho
The Questions
What am I doing wrong that prevents this from working in Firefox?
What can the diverging console outputs tell me about what I am doing wrong?
Do you have any suggestions on where to look / what to try to get this working in Firefox?
Any pointers or ideas are greatly appreciated! Please let me know if I can provide other information.
Thank you!
Update: Theory / Possible answer?
In an attempt to address the Uncaught (in promise) DOMException: The fetching process for the media resource was aborted by the user agent at the user's request. error, I changed video.play() to video.load(). This addressed the error, but the same Remote track removed and "No remote video" behavior persists.
In the meantime I may have discovered the more fundamental issue: The video stream from the Pi is H264, and from what I can tell, Firefox does not support this format? Perhaps this is the reason that I am having issues with firefox?
Can any of you confirm or deny this as the true issue?
The issue is related to H264 incompatibility, but after seeing this thread I realized i was a victim of the same issue.
I needed to update one line in my janus.plugin.streaming.jcfg file so that it looks like this:
RPI3: {
type = "rtp"
id = 1
description = "Raspberry Pi 3 Infrared Camera Module stream"
video = true
videoport = 5001
videopt = 96
videortpmap = "H264/90000"
videofmtp = "profile-level-id=42e01f;packetization-mode=1"
audio = true
audioport = 5002
audiopt = 111
audiortpmap = "opus/48000/2"
}
Previously I was using this "incomplete" line which was causing the issue:
...
videofmtp = "packetization-mode=1"
...
Apparently this enables the correct H264 "profile" that can work with Firefox's OpenH264 plugin. Now i am able to view the stream with both chrome and firefox!

PhantomJS get JS refresh

I need to check every content change on a web site.
I wrote a PhantomJS function to get the whole web site. After receiving the web site I parse every row to get the data.
Now I want to hold the connection and receive all JS-updates.
What need I do to get the JS-updates?
I hope my question is clear.
Here some code explanations:
Pseudo HTML Website
<html>
<head>...</head>
<body>
<div class="value-123" onload="(function() { setInterval(retrieveData(...), 5000); })">
<!-- If retrieveData finished, VALUE will change from e.g. 1.23 to 4.235 -->
VALUE
</div>
</body>
</html>
My PhantomJS Code:
const string cEndLine = "All output received";
var sb = new StringBuilder();
var p = new PhantomJS();
p.OutputReceived += (sender, e) =>
{
if (e.Data == cEndLine)
{
callBack(sb.ToString());
}
else
{
sb.AppendLine(e.Data);
}
};
p.RunScript(#"
var page = require('webpage').create();
page.settings.loadImages = false;
page.viewportSize = { width: 1920, height: 1080 };
page.onLoadFinished = function(status) {
if (status=='success') {
setTimeout(function() {
console.log(page.content);
console.log('" + cEndLine + #"');
phantom.exit();
}," + waitAfterPageLoad.TotalMilliseconds + #");
}
};
var url = '" + url + #"';
page.open(url);", new string[0]);

Appending API response to HTML page -- Disappearing

For an assignment, I am making a request to the Github Gist API and then appending the response to an HTML page. I am then supposed to allow the user to "favorite" one of the GISTS and then that GIST is to appear in a separate favorites section (favorited GISTS are to be stored in local storage). I am able to make the request, append the information and make the favorited GISTs appear in another section HOWEVER, the lists only appear for a moment and then disappear after I click on the favorite button. I can see the list flash and then go away. All of the other (non-favorite) GIST info also disappears even though it's not supposed. Can anyone please point me in the right direction? I'm not allowed to use any JQuery. Full code here: http://pastebin.com/ic0juq9n
Critical code below:
var getData = function(url)
{
if(!req)
{
throw 'Unable to create HttpRequest.';
}
req.onreadystatechange = function()
{
if(this.readyState === 4)
{
if (req.status === 200)
{
console.log("It worked!!");
var info = JSON.parse(req.responseText);
for(var key in info)
{
GistList.push(info[key]);
}
}
else
{
console.log("It messed up again");
}
}
for (i = 0; i < GistList.length; i++)
{
generateGistList(GistList[i]);
}
}
req.open('GET', url);
req.send();
};
function generateGistList(Gist) {
var itemList = document.createElement('li');
var holdURL = document.createElement('div');
var holdID = document.createElement('div');
var description = document.createElement('div');
if (Gist.description === null)
{
description.innerHTML = "No description found";
}
else
{
description.innerHTML = "Description: " + Gist.description;
}
holdURL.innerHTML = "URL: " + Gist.url;
holdID.innerHTML = "ID: " + Gist.id;
itemList.appendChild(holdID);
itemList.appendChild(holdURL);
itemList.appendChild(description);
ul.appendChild(itemList);
list.appendChild(ul);
var favorite = document.createElement("button");
favorite.innerHTML = "+";
favorite.setAttribute("gistId", Gist.id);
itemList.appendChild(favorite);
favorite.onclick = function()
{
var gistId = this.getAttribute("gistId"); //saved
var toBeFavoredGist = findById(gistId);
//here you add the gist to your favorite list in the localStorage
and remove it from the gist list and add it to favorite list
addFavorite(toBeFavoredGist);
DisplayFavs();
//removeGist(toBeFavoredGist);
}
}
Make sure if you're using forms that the form tag has an action attribute!

Social Login in Phonegap

I am stuck with Social login (Facebook, Google and twitter) through Phonegap.
I have googled and found so many solutions, but they don't work on either platform (i.e: android or iOS).
Does any one have implemented social login in his/her app using phonegap?
If any one could provide me the running code, that would be appreciated.
Thanks,
Sabir
I know it's probably late to answer your particular question but I have had the same issue - all of the current (September 2016) scripts, snippets and libraries for social login in PhoneGap/Cordova that I have tried did not work so I made some simple functions from scratch which may still be useful to people ending up here. You can use them to log the user in with LinkedIn, Facebook and Google(+). I have also made some simple functions that retrieve some basic user information from the access token that is returned by logging the user in with the given network. You can examine the functions but they usually save the token or/and the user data to localStorage for later usage. They have been tested in September 2016 and work perfectly. I hope that this would help other people who also land on failing snippets around the web.
You can just insert the code and use the functions whenever you want. It requires jQuery and PhoneGap's InAppBrowser (besides having made apps/clients in the social media in order to fill the app id and app secret).
As a side note, it is not the best move to store the client secret directly in the PhoneGap application as the source can be viewed by malevolent people.
The code can be refactored at many places, so feel free to do that, but it does the trick. You may also have to handle cases where the user cancels the login process.
var facebookLogin = function(appId, appSecret, successCb,errCb) {
/*$.get("https://graph.facebook.com/oauth/access_token?client_id=" + appId + "&client_secret=" +appSecret + "&grant_type=client_credentials", function(res) {
if (res.indexOf("access_token=") !== -1) {
successCb(res.replace("access_token=", "").trim());
}
else {
errCb(res);
}
})
*/
var ref = window.open("https://www.facebook.com/dialog/oauth?display=popup&response_type=token&client_id="+appId+"&redirect_uri="+"http://anyurlhere.com", "_blank", "location=no");
ref.addEventListener("loadstop", function(evt) {
if (evt.url.indexOf("anyurlhere.com") !== -1) {
if (evt.url.indexOf("#access_token") !== -1) {
localStorage.fbToken = evt.url.split("#access_token=")[1];
ref.close();
ref.addEventListener("exit", function() {
successCb(localStorage.fbToken);
})
}
}
})
}
var linkedinLogin = function(appId,appSecret,successCb,errCb) {
var ref = window.open("https://www.linkedin.com/oauth/v2/authorization?response_type=code&client_id="+appId+"&redirect_uri="+(encodeURI("http://anyurlhere.com"))+"&state=987654321&scope=r_basicprofile", "_blank", "location=no");
ref.addEventListener("loadstop", function(evt) {
if (evt.url.indexOf("anyurlhere.com") !== -1) {
if (evt.url.indexOf("code=") !== -1) {
var code = evt.url.split("code=")[1];
code = code.split("&")[0];
//TODO: get actual token to access user profile
$.post("https://www.linkedin.com/oauth/v2/accessToken", {"grant_type": "authorization_code", "code": code, "redirect_uri":encodeURI("http://anyurlhere.com"), "client_id":appId,"client_secret":appSecret}, function(data) {
for (key in data) {
if (key == 'access_token') {
localStorage.linkedinToken = data[key];
ref.close();
ref.addEventListener("exit", function() {
successCb(localStorage.linkedinToken);
})
}
}
})
}
}
})
}
var googleLogin = function(appId, appSecret, successCb, errCb) {
var ref = window.open("https://accounts.google.com/o/oauth2/v2/auth?response_type=token&client_id=" + appId + "&redirect_uri="+encodeURI("http://anyurlhere.com")+"&scope="+encodeURIComponent("email profile")+"&state=profile", "_blank", "location=no");
ref.addEventListener("loadstop", function(evt) {
if (evt.url.indexOf("anyurlhere.com") !== -1) {
if (evt.url.indexOf("access_token=") !== -1) {
var accessToken = evt.url.split("access_token=")[1];
accessToken = accessToken.split("&")[0];
localStorage.gToken = accessToken;
ref.close();
ref.addEventListener("exit", function() {
successCb(localStorage.gToken);
})
}
}
})
}
var getGoogleInfo = function(successCb, errCb) {
//get basic user profile
$.get("https://www.googleapis.com/oauth2/v1/userinfo?alt=json&access_token=" + localStorage.gToken, function(userInfo) {
successCb(userInfo);
})
}
var getFacebookInfo = function(successCb, errCb) {
//get basic user profile-name
$.get("https://graph.facebook.com/me?fields=email,name,picture&access_token=" + localStorage.fbToken, function(userInfo) {
var myInfo = {};
if (userInfo.name) {
myInfo.name = userInfo.name;
}
if (userInfo.email) {
myInfo.email = userinfo.email;
}
if (userInfo.picture) {
myInfo.picture = userInfo.picture.data.url;
}
localStorage.myInfo = JSON.stringify(myInfo);
successCb(myInfo);
// localStorage.myInfo = myInfo;
})
}
//get basic data for linked in
var getLinkedinInfo = function(successCb, errCb) {
$.ajax({
url: "https://api.linkedin.com/v1/people/~?format=json",
headers: {
"Authorization": "Bearer " + localStorage.linkedinToken
},
success: function(userInfo) {
var myInfo = {};
if (userInfo.firstName && userInfo.lastName) {
myInfo.name = userInfo.firstName + " " + userInfo.lastName;
}
if (userInfo.headline) {
myInfo.linkedinHeadline = userInfo.headline;
}
localStorage.myInfo = JSON.stringify(myInfo);
successCb(myInfo);
},
fail: function(err) {
alert(err);
for (key in err) {
alert(key);
alert(err[key]);
}
}
})
}
//example of logging in the user with Google + and getting his/her data
googleLogin("93-54932-423-fkfew.apps.googleusercontent.com", "", function(accessToken) {
getGoogleInfo(function(userInfo) {
var myInfo = {};
alert(userInfo.name);
if (userInfo.email) {
myInfo.email = userInfo.email;
}
if (userInfo.name) {
myInfo.name = userInfo.name;
}
if (userInfo.given_name) {
myInfo.firstName = userInfo.given_name;
}
if (userInfo.familyName) {
myInfo.familyName = userInfo.family_name;
}
if (userInfo.picture) {
myInfo.picture = userInfo.picture;
}

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