How to remove stored values in firefox extension? - javascript

I have stored a colour value in my firefox extension using this code
function saveOptions(e) {
browser.storage.sync.set({
colour: document.querySelector("#colour").value
});
e.preventDefault();
}
This works fine but to retest the extension I want to completely remove all the data previously set by the extension and then wants to freshly test the extension.How can we remove stored values in firefox extension?
EDIT:
I am following this project and delete All using inspect>Storage>Extension Storage does not work.

In Firefox you can put in about:debugging in the URL which will bring up the list of addons you have installed. If you inspect the addon you'll see an option to view the Extension Storage. You can "delete all" from there.

Try using browser.storage.sync.clear()

Related

Check chrome extension installed or not when extension is disabled.

How can is check chrome extension is installed or not , when extension is disabled ?
I found that when extension is disabled we can not access the background.js and also its icon.png or manifest.json.
While the extension is disabled, both the background script and the content script are alive, but the communication medium is disabled. So you can't send messages between them.
Can be captured using
chrome.runtime.connect().onDisconnect.addListener(function(e) {});
In the worst case, you can do a POST message.
If a extension is disabled, any code in it would not work, so it is not possible to get the installation status from a disabled extension
You can capture using
chrome.runtime.connect().onDisconnect.addListener(function(e) {
...
});

Add data from clipboard to out-of-page inputs via firefox addon

I develop an addon for Firefox and have the next question: is there a way to paste data from clipboard to borwser elements like a search or url field using Firefox addon api? And what is the best way to solve such kind of problem?
Yes get the data on the clipboard with: paste data from clipboard using document.execCommand("paste"); within firefox extension
Then do Services.wm.getMostRecentWindow('navigator:browser').gURLBar.value = varHoldingPasteData;

How can i create an extension security hash code in Google chrome Secure Preferences file

I was looking for adding extensions to Chrome with code. And i succeeded to do this in Chrome version 35 some how, but according to new releases of Google chrome like version 37+, there's a new json file named 'Secure Preferences' in profile folder. in this file there is some tags named protection>macs>extensions>settings which includes a hash code as value of a key for each extension ID like i put one extension to the below:
"protection": {
"macs": {
"extensions": {
"settings": {
"pjkljhegncpnkpknbcohdijeoejaedia": "CC15DD2467ADCD7C4226CECF827B57267AF9FB7E10E9540CBDD72A67436DB4ED"
}
}
}
}
My question is how can i generate the hash value of this part for each exstsion ID?
i stuck only for one line in this code, please show me a way
You can't. The purpose of this hash is specifically to prevent applications from installing extensions behind the user's back.
If you want the user to install an extension, upload the extension to the Chrome Store and provide the user with the URL to install it.

How to make a 'protocol' of my own and a Desktop application to use it for a Browser? [duplicate]

How do i set up a custom protocol handler in chrome? Something like:
myprotocol://testfile
I would need this to send a request to http://example.com?query=testfile, then send the httpresponse to my extension.
The following method registers an application to a URI Scheme. So, you can use mycustproto: in your HTML code to trigger a local application. It works on a Google Chrome Version 51.0.2704.79 m (64-bit).
I mainly used this method for printing document silently without the print dialog popping up. The result is pretty good and is a seamless solution to integrate the external application with the browser.
HTML code (simple):
Click Me
HTML code (alternative):
<input id="DealerName" />
<button id="PrintBtn"></button>
$('#PrintBtn').on('click', function(event){
event.preventDefault();
window.location.href = 'mycustproto:dealer ' + $('#DealerName').val();
});
URI Scheme will look like this:
You can create the URI Scheme manually in registry, or run the "mycustproto.reg" file (see below).
HKEY_CURRENT_USER\Software\Classes
mycustproto
(Default) = "URL:MyCustProto Protocol"
URL Protocol = ""
DefaultIcon
(Default) = "myprogram.exe,1"
shell
open
command
(Default) = "C:\Program Files\MyProgram\myprogram.exe" "%1"
mycustproto.reg example:
Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\Software\Classes\mycustproto]
"URL Protocol"="\"\""
#="\"URL:MyCustProto Protocol\""
[HKEY_CURRENT_USER\Software\Classes\mycustproto\DefaultIcon]
#="\"mycustproto.exe,1\""
[HKEY_CURRENT_USER\Software\Classes\mycustproto\shell]
[HKEY_CURRENT_USER\Software\Classes\mycustproto\shell\open]
[HKEY_CURRENT_USER\Software\Classes\mycustproto\shell\open\command]
#="\"C:\\Program Files\\MyProgram\\myprogram.exe\" \"%1\""
C# console application - myprogram.exe:
using System;
using System.Collections.Generic;
using System.Text;
namespace myprogram
{
class Program
{
static string ProcessInput(string s)
{
// TODO Verify and validate the input
// string as appropriate for your application.
return s;
}
static void Main(string[] args)
{
Console.WriteLine("Raw command-line: \n\t" + Environment.CommandLine);
Console.WriteLine("\n\nArguments:\n");
foreach (string s in args)
{
Console.WriteLine("\t" + ProcessInput(s));
}
Console.WriteLine("\nPress any key to continue...");
Console.ReadKey();
}
}
}
Try to run the program first to make sure the program has been placed in the correct path:
cmd> "C:\Program Files\MyProgram\myprogram.exe" "mycustproto:Hello World"
Click the link on your HTML page:
You will see a warning window popup for the first time.
To reset the external protocol handler setting in Chrome:
If you have ever accepted the custom protocol in Chrome and would like to reset the setting, do this (currently, there is no UI in Chrome to change the setting):
Edit "Local State" this file under this path:
C:\Users\Username\AppData\Local\Google\Chrome\User Data\
or Simply go to:
%USERPROFILE%\AppData\Local\Google\Chrome\User Data\
Then, search for this string: protocol_handler
You will see the custom protocol from there.
Note: Please close your Google Chrome before editing the file. Otherwise, the change you have made will be overwritten by Chrome.
Reference:
https://msdn.microsoft.com/en-us/library/aa767914(v=vs.85).aspx
Chrome 13 now supports the navigator.registerProtocolHandler API. For example,
navigator.registerProtocolHandler(
'web+custom', 'http://example.com/rph?q=%s', 'My App');
Note that your protocol name has to start with web+, with a few exceptions for common ones (like mailto, etc). For more details, see: http://updates.html5rocks.com/2011/06/Registering-a-custom-protocol-handler
This question is old now, but there's been a recent update to Chrome (at least where packaged apps are concerned)...
http://developer.chrome.com/apps/manifest/url_handlers
and
https://github.com/GoogleChrome/chrome-extensions-samples/blob/e716678b67fd30a5876a552b9665e9f847d6d84b/apps/samples/url-handler/README.md
It allows you to register a handler for a URL (as long as you own it). Sadly no myprotocol:// but at least you can do http://myprotocol.mysite.com and can create a webpage there that points people to the app in the app store.
This is how I did it. Your app would need to install a few reg keys on installation, then in any browser you can just link to foo:\anythingHere.txt and it will open your app and pass it that value.
This is not my code, just something I found on the web when searching the same question. Just change all "foo" in the text below to the protocol name you want and change the path to your exe as well.
(put this in to a text file as save as foo.reg on your desktop, then double click it to install the keys)
-----Below this line goes into the .reg file (NOT including this line)------
REGEDIT4
[HKEY_CLASSES_ROOT\foo]
#="URL:foo Protocol"
"URL Protocol"=""
[HKEY_CLASSES_ROOT\foo\shell]
[HKEY_CLASSES_ROOT\foo\shell\open]
[HKEY_CLASSES_ROOT\foo\shell\open\command]
#="\"C:\\Program Files (x86)\\Notepad++\\notepad++.exe\" \"%1\""
Not sure whether this is the right place for my answer, but as I found very few helpful threads and this was one of them, I am posting my solution here.
Problem: I wanted Linux Mint 19.2 Cinnamon to open Evolution when clicking on mailto links in Chromium. Gmail was registered as default handler in chrome://settings/handlers and I could not choose any other handler.
Solution:
Use the xdg-settings in the console
xdg-settings set default-url-scheme-handler mailto org.gnome.Evolution.desktop
Solution was found here https://alt.os.linux.ubuntu.narkive.com/U3Gy7inF/kubuntu-mailto-links-in-chrome-doesn-t-open-evolution and adapted for my case.
I've found the solution by Jun Hsieh and MuffinMan generally works when it comes to clicking links on pages in Chrome or pasting into the URL bar, but it doesn't seem to work in a specific case of passing the string on the command line.
For example, both of the following commands open a blank Chrome window which then does nothing.
"c:\Program Files (x86)\Google\Chrome\Application\chrome.exe" "foo://C:/test.txt"
"c:\Program Files (x86)\Google\Chrome\Application\chrome.exe" --new-window "foo://C:/test.txt"
For comparison, feeding Chrome an http or https URL with either of these commands causes the web page to be opened.
This became apparent because one of our customers reported that clicking links for our product from a PDF being displayed within Adobe Reader fails to invoke our product when Chrome is the default browser. (It works fine with MSIE and Firefox as default, but not when either Chrome or Edge are default.)
I'm guessing that instead of just telling Windows to invoke the URL and letting Windows figure things out, the Adobe product is finding the default browser, which is Chrome in this case, and then passing the URL on the command line.
I'd be interested if anyone knows of Chrome security or other settings which might be relevant here so that Chrome will fully handle a protocol handler, even if it's provided via the command line. I've been looking but so far haven't found anything.
I've been testing this against Chrome 88.0.4324.182.
open
C:\Users\<Username>\AppData\Local\Google\Chrome\User Data\Default
open Preferences then search for excluded_schemes you will find it in 'protocol_handler' delete this excluded scheme(s) to reset chrome to open url with default application

View JSON file in Browser

It is not a programming question, but need your views in few words.
When we hit the JSON url in Broswer, it asks us to save the file.
Why this happens ?
Is there any way to view it on the page itself ?
Is there any addon available to view JSON file in browser?
In Chrome use JSONView
or Firefox use JSONView
If you don't want to install extensions, you can simply prepend the URL with view-source:, e.g. view-source:http://content.dimestore.com/prod/survey_data/4535/4535.json. This usually works in Firefox and Chrome (will still offer to download the file however if Content-Disposition: attachment header is present).
In Chrome, use JSONView to view formatted JSON.
To view "local" *.json files:
- after install You must open the Extensions option from Window menu.
- Check box next to "Allow Access to File URLs"
- note that save is automatic (i.e. no explicit save necessary)
Re-open the *.json file and it should be formatted.
Firefox 44 includes a built-in JSON viewer (no add-ons required). The feature is turned off by default, so turn on devtools.jsonview.enabled:
How can you disable the new JSON Viewer/Reader in Firefox Developer Edition?
json-ie.reg. for IE
try this url
http://www.jsonviewer.com/
Well I was searching view json file in WebBrowser in my Desktop app, when I try in IE still same problem IE was also prompt to download the file.
Luckily after too much search I find the solution for it.
You need to :
Open Notepad and paste the following:
[HKEY_CLASSES_ROOT\MIME\Database\Content Type\application/json]
"CLSID"="{25336920-03F9-11cf-8FD0-00AA00686F13}"
"Encoding"=hex:08,00,00,00
Save document as Json.reg and then right click on file and run as administrator.
After this You can view json file in IE and you Desktop WebBrowser enjoy :)
For Firefox's Bookmarks JSON files, use this excellent Bookmarklet:
javascript:(function(){var E=document.getElementsByTagName('PRE')[0],T=E.innerHTML,i=0,r1,r2;t=new Array();while(/("uri":"([^"]*)")/g.exec(T)){r1=RegExp.$1;r2=RegExp.$2;if(/^https?:/.exec(r2)){t[i++]='['+(i)+']:<a href='+r2+'>'+r2+'<\/a>';}}with(window.open().document){for(i=0;t[i];i++)write(t[i]+'<br>');close();}})();
Source: "alterna" from forums.Mozillazine.org:
http://forums.mozillazine.org/viewtopic.php?p=5551705#p5551705
I have the Content-Type of my JSON-printing CGIs set to text/javascript.
Works fine for both displaying in browser (e.g. Firefox) and processing in script.
Of course there's no syntax-highlighting in this case.
If there is a Content-Disposition: attachment reponse header, Firefox will ask you to save the file, even if you have JSONView installed to format JSON.
To bypass this problem, I removed the header ("Content-Disposition" : null) with moz-rewrite Firefox addon that allows you to modify request and response headers https://addons.mozilla.org/en-US/firefox/addon/moz-rewrite-js/
An example of JSON file served with this header is the Twitter API (it looks like they added it recently). If you want to try this JSON file, I have a script to access Twitter API in browser: https://gist.github.com/baptx/ffb268758cd4731784e3
I would also recommend to use Notepad++ with json-view extension. You get the extension here: https://sourceforge.net/projects/nppjsonviewer/
Install and restart Notepad++.
Then open json-file in Notepad and go to "extensions -> Json-Viewer - > Format JSON. Then you habe the hierarchical view of json.
You can also use one of the online-viewers (http://jsonviewer.stack.hu/ , https://jsoneditoronline.org/) which look nice, but I wouldn't recommend this if your data are sensitive in terms of privacy.
For Safari 12 and later, you can try the JSONBeautifier bookmarklet. Also works with other browsers.
I created this because JSON Formatter for Safari stopped working in Safari 12. There are a few new options for Safari 12, but I didn't find an open source one in the App Store, and I do not trust closed source browser extensions.
This can be used as a bookmarklet or the source, json-beautifier.js, can be copied and pasted into the browser console. The code is freely available for review and is less than 100 lines of code including comments. Runs entirely on your device and never sends your data over a network.
Works with local files too. 🤓
Try this one Chrome extension https://chrome.google.com/webstore/detail/json-%3E-table/pjdecdkdljmchigbkalnblidepkeojda
Just install and open URL in browser
Microsoft Edge Browser
Json format easily view this but you have some changes in browser.
Browser setting
Go to browser edge://flags/
Search Json viewer
Change "Default to Enabled"
Restart Browser
[Done changes]
Chrome Browser
Install Extension Json viewer
Then view this pure json and change setting also
Right click on JSON file, select open, navigate to program you want open with(notepad). Consecutive opens automatically use notepad.

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