I am trying to generate the SHA-1 hash of a string using the Web Crypto API. The code i am using to do this is pretty much the second example from the MDN
SubtleCrypto.digest() page.
async function getHash(value, algorithm = 'SHA-1') {
let msgBuffer = new TextEncoder('utf-8').encode(value);
let hashBuffer = await crypto.subtle.digest(algorithm, msgBuffer);
let hashArray = Array.from(new Uint8Array(hashBuffer));
return hashArray.map(b => ('00' + b.toString(16)).slice(-2)).join('');
}
See this JSFiddle for a demo.
I am also using this TextEncoder Polyfill in Edge. It works fine in Firefox and Chrome, but in Microsoft Edge i just get the error message "SHA-1".
I couldn't find anything about this error. Does someone know what is going wrong? Is there a better way to do this?
"Edge does not support SHA1", try https://github.com/PeculiarVentures/webcrypto-liner?
Related
When editing a vertex I would like to substitute the vertex symbol with SimpleMarkerSymbol and a TextSymbol but that appears to be impossible. Any suggestions on how I could do this? I want the appearance of dragging something like this (text + circle):
After taking some time to look at the API I've come to the conclusion it is impossible. Here is my workaround:
editor.on("vertex-move", args => {
let map = this.options.map;
let g = <Graphic>args.vertexinfo.graphic;
let startPoint = <Point>g.geometry;
let tx = args.transform;
let endPoint = map.toMap(map.toScreen(startPoint).offset(tx.dx, tx.dy));
// draw a 'cursor' as a hack to render text over the active vertex
if (!cursor) {
cursor = new Graphic(endPoint, new TextSymbol({text: "foo"}));
this.layer.add(cursor);
} else {
cursor.setGeometry(endPoint);
cursor.draw();
}
})
You could use a TextSymbol to create a point with font type having numbers inside the circle. Here is one place where you can find such font. http://www.fontspace.com/the-fontsite/combinumerals
Wont be exactly as shown in the image but close enough. Also some limitation it wont work with IE9 or lower (this is as per esri documentation, as I am using halo to get the white border).
Here is the working Jsbin : http://jsbin.com/hayirebiga/edit?html,output use point of multipoint
PS: I have converted the ttf to otf and then added the font as base64, which is optional. I did it as I could not add the ttf or otf to jsbin.
Well, Achieve this seems impossible so far however ArcGIS JS API provides a new Application/platform where you can generate single symbol online for your applications.
We can simply create all kind of symbols(Provide by ESRI) online and it gives you on the fly code which you just need to paste in your application.
This will help us to try different type of suitable symbols for the applications.
Application URL: https://developers.arcgis.com/javascript/3/samples/playground/index.html
Hoping this will help you :)
I want to examine http requests in an extension for firefox. To begin figuring out how to do what I want to do I figured I'd just log everything and see what comes up:
webRequest.onResponseStarted.addListener(
(stuff) => {console.log(stuff);},
{urls: [/^.*$/]}
);
The domain is insignificant, and I know the regex works, verified in the console. When running this code I get no logging. When I take out the filter parameter I get every request:
webRequest.onResponseStarted.addListener(
(stuff) => {console.log(stuff);}
);
Cool, I'm probably doing something wrong, but I can't see what.
Another approach is to manually filter on my own:
var webRequest = Components.utils.import("resource://gre/modules/WebRequest.jsm", {});
var makeRequest = function(type) {
webRequest[type].addListener(
(stuff) => {
console.log(!stuff.url.match(/google.com.*/));
if(!stuff.url.match(/google.com.*/))
return;
console.log(type);
console.log(stuff);
}
);
}
makeRequest("onBeforeRequest");
makeRequest("onBeforeSentHeaders");
makeRequest("onSendHeaders");
makeRequest("onHeadersReceived");
makeRequest("onResponseStarted");
makeRequest("onCompleted");
With the console.log above the if, I can see the regex returning true when I want it to and the code making it past the if. When I remove the console.log above the if the if no longer gets executed.
My question is then, how do I get the filtering parameter to work or if that is indeed broken, how can I get the code past the if to be executed? Obviously, this is a fire hose, and to begin searching for a solution I will need to reduce the data.
Thanks
urls must be a string or an array of match patterns. Regular expressions are not supported.
WebRequest.jsm uses resource://gre/modules/MatchPattern.jsm. Someone might get confused with the util/match-pattern add-on sdk api, which does support regular expressions.
I use Grails 2.0.0 in NetBeans with the Geolocation support plugin version 0.4
using this plugin, I can display the map with my position marker, but I get an exception when I try to calculate the distance between two positions:
No such property: GeoUtils for class: org.grails.plugin.geolocation.GeolocationService
This is a piece of my code:
Coordinates f = new Coordinates()
f.setAltitude(31.634227951365595)
f.setLongitude(-8.00504207611084)
Coordinates t = new Coordinates()
t.setAltitude(31.63271158235246)
t.setLongitude(-7.999967336654663)
GeoPosition positionFrom = new GeoPosition()
positionFrom.setCoords(coordinatesFrom)
GeoPosition p = new GeoPosition()
p.setCoords(coordinatesTo)
GeolocationService g = new GeolocationService()
double test = g.distance(positionFrom, positionTo)
The probleme is in grails-app/services/org/grails/plugin/geolocation/GeolocationService.groovy:
double distance(GeoPosition positionFrom, GeoPosition positionTo) {
LatLngTool.distance(**GeoUtils**.convertGeopositionToLatLng(positionFrom), GeoUtils.convertGeopositionToLatLng(positionTo), getLengthUnit())
}
The geolocation plugin is broken. Till the author fixes it, you may want to fork it yourself and fix it for your application
In GeolocationService.groovy import the GeoUtils class
import org.grails.plugin.geolocation.utils.GeoUtils
Then in BuildConfig.groovy, refer to this modified version instead,
grails.plugin.location.geolocation = "<local_path_to>/geolocation"
afaik, that should be enough to proceed.
Thinks Mr Aldrin for the response, really there is a lot of errors in the source code of this plugin I emailed the developer but he didn't answer me. but I could solve all of thos problemes and i can now use it.
If there is someone who needs help at this level, I can send to him the corrected version .. haj.abdel( at ) gmail
I am developing a mobile application using phonegap, Initially I have developed using WEBSQL but now I m planning to move it on INDEXDB. The problem is it does not have direct support on IOS , so on doing much R&D I came to know using IndexedDB Polyfil we can implement it on IOS too
http://blog.nparashuram.com/2012/10/indexeddb-example-on-cordova-phonegap.html
http://nparashuram.com/IndexedDBShim/
Can some please help me how to implement this as there are not enough documentation for this and I cannot figure out a any other solution / api except this
I have tested this on safari 5.1.7
Below is my code and Error Image
var request1 = indexedDB.open(dbName, 5);
request1.onsuccess = function (evt) {
db = request1.result;
var transaction = db.transaction(["AcceptedOrders"], "readwrite");
var objectStore = transaction.objectStore("AcceptedOrders");
for (var i in data) {
var request = objectStore.add(data[i]);
request.onsuccess = function (event) {
// alert("am again inserted")
// event.target.result == customerData[i].ssn;
};
}
};
request1.onerror = function (evt) {
alert("IndexedDB error: " + evt.target.errorCode);
};
Error Image
One blind guess
Maybe your dbName contains illegal characters for WebSQL database names. The polyfill doesn't translate your database names in any kind. So if you create a database called my-test, it would try to create a WebSQL database with the name my-test. This name is acceptable for an IndexedDB database, but in WebSQL you'll get in trouble because of the - character. So your database name has to match both, the IndexedDB and the WebSQL name conventions.
... otherwise use the debugger
You could set a break point onto your alert(...); line and use the debugger to look inside the evt object. This way you may get either more information about the error itself or more information to share with us.
To do so, enable the development menu in the Safari advanced settings, hit F10 and go to Developer > Start debugging JavaScript (something like that, my Safari is in a different language). Now open then "Scripts" tab in the developer window, select your script and set the break point by clicking on the line number. Reload the page and it should stop right in your error callback, where you can inspect the evt object.
If this doesn't help, you could get the non-minified version of the polyfill and try set some breakpoints around their open function to find the origin of this error.
You could try my open source library https://bitbucket.org/ytkyaw/ydn-db/wiki/Home. It works on iOS and Android.
How can I print a map from the OpenLayers? I want to add print button in my OpenLayers page =) I have MapFish extension for my geoserver, but don`t know how to make request to it. Any other ideas are welcome) Help please.
I had a similar problem using a reverse proxy, because I discovered the answer from info.json contais local ip reference instead of the public url
to solve brutally i replaced the ip referenze with the public url in the ajax request (see the following code. I hope it can be usefull for others...
this.capabilities.createURL = this.capabilities.createURL.replaceAll("192.168.0.0:8080", "mypublicurl");
this.capabilities.printURL= this.capabilities.printURL.replaceAll("192.168.0.0:8080", "mypublicurl");
Ext.Ajax.request({
url:this.capabilities.createURL,
jsonData:jsonData,
success:function(response){
response.responseText = response.responseText.replaceAll("192.168.0.0:8080", "mypublicurl");
window.open(Ext.decode(response.responseText).getURL);
}
});
The simplest way is to use GeoExt.PrintMapPanel (geoext example). And be sure to read GeoServer Printing Module.
UPD GET request example. You must modify url, "baseURL", "layers". If you specify an existing layer, this request must return pdf file.
http://demo.opengeo.org/geoserver/pdf/print.pdf?spec={"units":"degrees","srs":"EPSG:4326","layout":"A4","dpi":75,"mapTitle":"Printing Demo","comment":"This is a simple map printed from GeoExt.","layers":[{"baseURL":"http://demo.opengeo.org/geoserver/wms","opacity":1,"singleTile":true,"type":"WMS","layers":["topp:tasmania_state_boundaries"],"format":"image/jpeg","styles":[""]}],"pages":[{"center":[146.56000000001,-41.56],"scale":8192000,"rotation":0}]}