I have created an extension for mozilla firefox. Now, I'm trying to distribute the extension on an simple web site. I generate a sha1 hash code from an online generator. This is the code I have in my web site:
<script type="application/javascript">
function install (aEvent)
{
for (var a = aEvent.target; a.href === undefined;) a = a.parentNode;
var params = {
"Foo": { URL: aEvent.target.href,
Hash: aEvent.target.getAttribute("hash"),
toString: function () { return this.URL; }
}
};
InstallTrigger.install(params);
return false;
}
</script>
<a href="c:/grouAndUsersWorkSpace/MozillaAddon/createtab.xpi"
hash="sha1:a7093a2afe1a53fde114a4a7dcb3e15e57862642"
onclick="return install(event);">Install Extension!</a>
the path of the url is local. And as a result when I start the application I got "The add-on could not be downloaded because of a connection failure on localhost".
I changed the path of the url to be: file://c:/grouAndUsersWorkSpace/MozillaAddon/createtab.xpi and with this nothing happens.
I have two questions:
1. Is that a good way to generate a hash code?
2. What should cause that connection failure?
1) I prefer to use the CHK Checksum Utility to generate checksums.
2) I don't have access at the moment to verify it, but have you tried serving the extension with Apache or similar?
Edit
Since you used a local file, you'll need a 3 slashes instead of 2 : file URI scheme .
Tested it both ways, they both work.
Related
I have a requirement to develop a tool to backup certain folders and files present in a shared drive (Windows 7) using Client-Side technologies (HTML5, CSS3 and JavaScript) only. Below is the JavaScript function to copy the file.
function copyFile() {
var myObject, f;
myObject = new ActiveXObject("Scripting.FileSystemObject");
f = myObject.GetFile("#\\Network_Name\Home$\User_Folder\Downloads\Folder_Name\Test.pdf");
if(!f)
{
return alert("File Not Found");
}
f.copy("#\\Network_Name\Home$\User_Folder\Downloads\Backup_Folder");
}
Since I'm using ActiveXObject, the above code will work only in IE. But I'm getting the below error in the line #\\Network_Name\Home$\User_Folder\Downloads\Folder_Name\Test.pdf. Please help me to properly access the network folder using JavaScript.
The verbatim identifier (#) is for C# not JavaScript, you need to escape your slashes:
.GetFile("\\\\Network_Name\\Home$\\User_Folder\\Downloads\\Folder_Name\\Test.pdf");
Try to use Ajax request method type "GET" for this purpose.
I have two servers: A and B.
My Classic ASP application is deployed on Server A.
Server B contains a Folder (ScannedDocuments). I have created a Shared Drive on Server A to point to this folder. The Share Drive is named Q:.
On IE 7, when I try to access file using javascript, I am using:
window.open(file://Q:/a.txt)
It opens the file. But on IE 8 and above and all versions of Firefox, it is not opening. Neither an error is generated nor the file is opening.
I guess it is getting blocked by browser's security features.
Please let me know how I can open files on these browser versions.
Is there any other way to open a remote file using javascript or using IIS?
** Edited **
I tried creating a Virtual Directory on IIS and pointing to Shared Drive. But it gives error: resource or directory not found.
I am using IIS 7
#Anant Dabhi is right - create simple Ajax call to server ant return file content.
Client (JS). Use it instead of window.open(file://Q:/a.txt)
function getFile(filename) {
$.ajax({
url: "/YourWeb/File/Get",
data: {
filename: filename
},
success: function (data) {
console.log(data);
}
});
}
Your "backend". Assume that your are using .NET :)
public ActionResult Get()
{
string pathToFolder = "x:\\yyy\\zzz";
// Strip any directories and leave only name of file. Exception is possible ;)
string filename = Path.GetFileName(Request["filename"]);
byte[] ba = File.ReadAllBytes(Path.Combine(pathToFolder, filename));
string s = Encoding.UTF8.GetString(ba);
// Return as text (if you are absolutetlly sure it is text!)
return Content(s);
// Or pack it in JSON object to have status
return Json(new { Status = true, Data = s });
}
You could connect to UNC if you wish https://msdn.microsoft.com/en-us/library/windows/desktop/aa385482%28v=vs.85%29.aspx
Is there a possible way to read a local file in JavaScript.
MyFolder:
db.csv
Parse.js
Trying to fetch the contents of file db.csv in Parse.js, But in vain.
Can you share some links where I can get enough knowledge how to read a file.
Running Instruments in Xcode5, with test scripts in .js file where I have to feed in some values from a .csv file.
iOS UIAutomation, apple provides an api for running a task on the target's host.
performTaskWithPathArgumentsTimeout
Using this, we can have a bash script to printout the contents of a file that we wanted to fetch in the first case.
Bash script can be as simple as this for this requirement.
#! /bin/bash
FILE_NAME="$1"
cat $FILE_NAME
Save it as for example FileReader.sh file.
And in your automation script,
var target = UIATarget.localTarget();
var host = target.host();
var result = host.performTaskWithPathArgumentsTimeout(executablePath,[filePath,fileName], 15);
UIALogger.logDebug("exitCode: " + result.exitCode);
UIALogger.logDebug("stdout: " + result.stdout);
UIALogger.logDebug("stderr: " + result.stderr);
where in,
executablePath is where the command need to be executed.
var executablePath = "/bin/sh";
filePath is the location of the created FileReader.sh file. When executed, outputs the content to standard output (in our requirement).
[give full absolute path of the file]
fileName is the actual file to fetch contents from.
[give full absolute path of the file] In my case I had a Contents.csv file, which I had to read.
and the last parameter is the timeout in seconds.
Hope this helps others, trying to fetch contents (reading files) for performing iOS UIAutomation.
References:
https://stackoverflow.com/a/19016573/344798
https://developer.apple.com/library/iOS/documentation/UIAutomation/Reference/UIAHostClassReference/UIAHost/UIAHost.html
If the file is on the same domain as the site you're in, you'd load it with Ajax. If you're using Ajax, it's be something like
$.get('db.csv', function(csvContent){
//process here
});
Just note that the path to the csv file will be relative to the web page you're in, not the JavaScript file.
If you're not using jQuery, you'd have to manually work with an XmlHttpRequest object to do your Ajax call.
And though your question doesn't (seem to) deal with it, if the file is located on a different domain, then you'd have to use either jsonP or CORS.
And, just in case this is your goal, no, you can't, in client side JavaScript open up some sort of Stream and read in a file. That would be a monstrous security vulnerability.
This is a fairly simple function in Illuminator's host functions library:
function readFromFile(path) {
var result = target.host().performTaskWithPathArgumentsTimeout("/bin/cat", [path], 10);
// be verbose if something didn't go well
if (0 != result.exitCode) {
throw new Error("readFromFile failed: " + result.stderr);
}
return result.stdout;
}
If you are using Illuminator, this is host().readFromFile(path).
I'm developing an application with phonegap, and I have a sound file I want to play that's in a path like so www/Sounds/sound.mp3, and I'm trying to access this file using the Media object of Phonegap in order to play it.
I cannot figure out the path to access this sound file within a javascript file that uses the Media object? I've tried paths like, file:///www/Sounds/sound.mp3, relative paths, etc and I cannot access it. I keep getting the following error in xcode 4
Will attempt to use file resource 'file:///www/Sounds/sound.mp3'
Unknown resource 'file:///www/Sounds/sound.mp3'
What path do I need to use to access the file? Or do I need to copy the sound file out of my www directory and into my Resources folder and access it there?
My WWW folder is referenced, not sure if that makes a difference.
Heres a modified version of getPhoneGapPath that works for me on both iOS and Android. It is also not restricted to only working on files that have a filename that is 10 characters long :)
getPhoneGapPath: function () {
'use strict';
var path = window.location.pathname;
var phoneGapPath = path.substring(0, path.lastIndexOf('/') + 1);
return phoneGapPath;
}
var resource = getPhoneGapPath() + 'audio/audio.mp3';
getPhoneGapPath() will return:
iOS: /var/mobile/Applications/{GUID}/{appName}/www/
Android: /android_asset/www/
Use window.location.pathname to get the path of your application. It will look something like this on iPhone:
/var/mobile/Applications/{GUID}/{appname}.app/www/index.html
And this on Android:
/android_asset/www/index.html
Strip off the /index.html, prepend file://, and append your relative path Sounds/sound.mp3.
Here's something to get you started:
Demo: http://jsfiddle.net/ThinkingStiff/chNVY/
Code:
function getPhoneGapPath() {
var path = window.location.pathname;
path = path.substr( 0, path.length - 10 );
return 'file://' + path;
};
var resource = getPhoneGapPath() + 'Sounds/sound.mps';
The best answer is outdated. You are now able to play wav, mp3, and caf formats on iOS using this "relative path" method:
var media = new Media('beep.wav', ...);
Note that the above code requires the sound file to be in the root of your www/ directory -- in this example at www/beep.wav. If you want to put them in a subdiretory like www/sounds/, you'll need to specify it using a path relative to your www/ directory. For example, this also works now:
var media = new Media('sounds/beep.wav', ...);
for the sound file at www/sounds/beep.wav.
As of Cordova 3.3+, the 2 other answers aren't correct. It should work even if you just pass it a file name.
But, it will only work in iOS if the file extension is .wav.
This will work:
var media = new Media('recording.wav', ...);
This won't:
var media = new Media('recording.mp3', ...);
I had the same problem and all the answers about file paths alone didn't work for me using the Phone Gap Developer app. The problem was with the Developer app not pushing the files physically onto the device, preventing me from accessing them in any way.
The Media plugin worked as intended using
$ phonegap run android
$ phonegap run ios
with this js code:
function getPhoneGapPath() {
var path = window.location.pathname;
var phoneGapPath = path.substring(0, path.lastIndexOf('/') + 1);
return phoneGapPath;
}
var sound = new Media(getPhoneGapPath()+"assets/sounds/sound.mp3"
//...
sound.play();
This returns an error on Developer app:
'Cannot use audio file from source var/mobile/Containers/data/Application/{GUID}/Library/NoCloud/phonegapdevapp/www/assets/sounds/sound.mp3'
but works if built from the console.
Details can be found here:
https://forums.adobe.com/thread/2135718
Better try this to take into account any HTML5 History API code that might add in history entries with directories ("/"):
function get_phonegap_path () {
var path = window.location.pathname
return path.slice(0, path.indexOf("/www/") + 5)
}
"wget http://www.example.com/file.doc" downloads that file to the local disk.
What is the equivalent of the above in javascript? for example, consider the following html snippet.
<html>
<head>
<script language="JavaScript">
function download_file() {
var url = "http://www.example.com/file.doc"
//
// Question:
//
// what should be done here to download
// the file in the url?
//
}
</script>
</head>
<body>
<input type="button" value="Download" onclick="download_file()">
</body>
</html>
Please suggest a solution that is compliant with all the browsers.
Sangeeth.
After a exploring more than a month, with a help of my friend, we were able to find out the following.
The website where the file is hosted is not allowing us to download the file using window.location = url; or window.open(url);
Finally we had to use the data-downloadurl support from HTML5 as follows
Click here to download the file
We embed this html into the host html and when clicked on the link, it triggers the download.
Why not use:
function download_file() {
var url = "http://www.example.com/file.doc"
window.location = url;
}
See https://developer.mozilla.org/en/DOM/window.location
If you need to open this in a new window/tab first then use:
function download_file() {
var url = "http://www.example.com/file.doc"
window.open(url);
}
See https://developer.mozilla.org/en/DOM/window.open
First thing that always comes in mind of every answerer to this question is executing wget shell command from java script.I'm almost certain that that's not possible because of
major security risk.
You pretty much need to have ajax which sends command to command line
either through php, or another scripting language via ajax...
You could probably make that happen with something like http://www.phantomjs.org/
I am saying probably because I read it from somewhere.