I'm trying to build a simple web browser using BrowserComponent. Are there any options to check when a user clicks on a "download" button (how to detect download)? When developing directly with Android, there is an event "onDownloadStart". Is there something similar?
Thanks
We don't support that behavior as it isn't portable. Androids download facility stores files "elsewhere" and requires some additional permissions. Instead you can intercept the URL navigation logic and decide whether you want to perform a download or not, you can then use something like the Util download methods to perform the actual file download.
e.g.:
bc.addBrowserNavigationCallback(url -> {
// *** WARNING: this code runs off the EDT and must not block!!!! ***
if(shouldIDownloadThisURL(url) {
String file = getStorageFileNameForUrl(url);
Util.downloadUrlToStorageInBackground(url, file,
ev -> fileDownloadCompleted(file));
return false;
}
return true;
});
Related
I'm kind of getting some more understanding with basic SwiftUI but now I wanted to extend my application to actually do some stuff regarding system components for me. Basically I want to run an AppleScript from inside my app which creates a signature in Mac Mail. The script itself is pretty simple:
// Generates a signature in Mac Mail
tell application "Mail"
set newSig to make new signature with properties {name:"The Signature Name"}
set content of newSig to "My New Signature Content"
end tell
I have created a view with a button which should execute the script:
import SwiftUI
struct SomeView: View {
#State var status = ""
var body: some View {
VStack(alignment: .center) {
Button(action: {
let source = """
tell application \"Mail\"
set newSig to make new signature with properties {name: \"The Signature Name\"}
set content of newSig to \"My New Signature Content\"
end tell
"""
var error: NSDictionary?
if let scriptObject = NSAppleScript(source: source) {
if let output: NSAppleEventDescriptor = scriptObject.executeAndReturnError(&error) {
self.status = output.stringValue ?? "some default"
} else if (error != nil) {
self.status = "error: \(error)"
}
}
}) {
Text("Generate").font(.callout)
}
Text("\(self.status)")
}
}
}
struct SomeView_Previews: PreviewProvider {
static var previews: some View {
SomeView()
}
}
Everything executes but I get the error
AppleScript run error = {
NSAppleScriptErrorAppName = Mail;
NSAppleScriptErrorBriefMessage = "Application isn\U2019t running.";
NSAppleScriptErrorMessage = "Mail got an error: Application isn\U2019t running.";
NSAppleScriptErrorNumber = "-600";
NSAppleScriptErrorRange = "NSRange: {0, 0}";
}
After some research i found this article which describes the problem quite well. Apparently this error is because the app is running in a sandbox and within the sandbox Mail is indeed not running. I kind of get Apple's idea not to let applications do whatever they want without the user's consent...
Anyway, unfortunately this article describes the solution using Objective C and this is something I have even less of a clue than SwiftUI.
Can anybody tell me how to run (or copy my script.scpt file to the accessible library folder and the run) a script from within a SwitUI View? This would be so much help!
Thanks!!!
I have played around quite a bit with this manner and after having numerous discussions and trial & errors on that subject, I want to present 2 solutions (until now it seems that these are the only possible solutions for a sandboxed application).
First of all, if you don't consider to distribute your app on the App Store, you can forget about the following, since you just have to deactivate the Sandbox and you are basically free to do whatever you want!
In case your planning to distribute a Sandboxed App, the only way of running a script and interacting with other apps on the user's system is to run a script file from the Application Script folder. This folder is a designated folder in the user library structure: /Users/thisUser/Library/Application Scripts/com.developerName.appName/. Whatever script goes in here you have the right to run from your application appName.
You basically have two options to get your script file into that folder:
Option 1 - Install the Script File
This is (in my opinion) clearly the option you should go for if your script is static (does not require any additional user data from your application). All you have to do is
Select the project (1)
click on Build Phases (2)
add the Copy Files setting (if not already present)
choose the script file location in your app (singing might be a good option when distributing via AppStore)
add the Application Script folder of your application to the destination. Therefore, choose Absolute Path and enter Users/$USER/Library/Application Scripts/$PRODUCT_BUNDLE_IDENTIFIER in the Path field.
You can also select the Copy only when installing option if your script is entirely static but in case you have changes on the script when the application is closed and reopened and you want to update the script, leave this option blank (I have not tested this!).
After this is done you can execute the script via NSUserScriptTask. A more detailed description of how you could implement this is given here.
Option 2 - Giving access to the folder and copy the file on demand
This is certainly the solution when your script file updates dynamically according to e.g. user inputs. Unfortunately, this is a bit of a hassle and does not have (in my opinion) satisfying solutions. To do so, you will have to grant access to the folder (in this case Application Scripts/). This is done via NSOpenPanel. A really good tutorial how to implement this is given here.
Per default you will have read permission to that folder only. Since you are trying to copy a file into that folder you will have to change that to read/write in your Capabilities as well.
I hope this will help some people to "shine some light into the dark"! For me this was quite a bit of a journey since there is only very little information out there.
Is it possible to activate Xposed-modules automatically rather than checking them to be active in the Xposed GUI? Is the enabled status of the modules stored somewhere easily accessible (on a rooted device)...?
You can achieve this by modifying the conf/modules.list file in the Xposed Installer data directory, simply add the path of your APK file to the list.
You should also modify the shared_prefs/enabled_modules.xml file, so that your change is reflected within Xposed Installer (otherwise, the module will be enabled but will show as disabled within Xposed Installer).
The device needs to be rebooted after the change.
Note that this requires root access, since the file is located in the internal data directory of another app. I strongly recommend just going the normal way and opening the Xposed Installer app, and let the user enable the module themselves:
public static boolean startXposedActivity(Context context) {
Intent intent = new Intent("de.robv.android.xposed.installer.OPEN_SECTION");
intent.putExtra("section", "modules");
try {
context.startActivity(intent);
return true;
} catch (ActivityNotFoundException e) {
return false;
}
}
I'm trying to capture and handle every single request a web page, or a plugin in it is about to make.
For example, if you open the console, and enable Net logging, when a HTTP request is about to be sent, console shows it there.
I want to capture every link and call my function even when a video is loaded by flash player (which is logged in console also, if it is http).
Can anyone guide me what I should do, or where I should get started?
Edit: I want to be able to cancel the request and handle it my way if needed.
You can use the Jetpack SDK to get most of what you need, I believe. If you register to system events and listen for http-on-modify-request, you can use the nsIHttpChannel methods to modify the response and request
let { Ci } = require('chrome');
let { on } = require('sdk/system/events');
let { newURI } = require('sdk/url/utils');
on('http-on-modify-request', function ({subject, type, data}) {
if (/google/.test(subject.URI.spec)) {
subject.QueryInterface(Ci.nsIHttpChannel);
subject.redirectTo(newURI('http://mozilla.org'));
}
});
Additional info, "Intercepting Page Loads"
non sdk version and with much much more control and detail:
this allows you too look at the flags so you can only watch LOAD_DOCUMENT_URI which is frames and main window. main window is always LOAD_INITIAL_DOCUMENT_URI
https://github.com/Noitidart/demo-on-http-examine
https://github.com/Noitidart/demo-nsITraceableChannel - in this one you can see the source before it is parsed by the browser
in these examples you see how to get the contentWindow and browserWindow from the subject as well, you can apply this to sdk example, just use the "subject"
also i prefer to use http-on-examine-response, even in sdk version. because otherwise you will see all the pages it redirects FROM, not the final redirect TO. say a url blah.com redirects you to blah.com/1 and then blah.com/2
only blah.com/2 has a document, so on modify you see blah.com and blah.com/1, they will have flags LOAD_REPLACE, typically they redirect right away so the document never shows, if it is a timed redirect you will see the document and will also see LOAD_INITIAL_DOCUMENT_URI flag, im guessing i havent experienced it myself
How can you detect the url that I am browsing in chrome/safari/firefox via cocoa (desktop app)?
As a side but related note, are there any security restrictions when developing a desktop app that the user will be alerted and asked if they want to allow? e.g. if the app accesses their contact information etc.
Looking for a cocoa based solution, not javascript.
I would do this as an extension, and because you would like to target Chrome, Safari, and Firefox, I'd use a cross-browser extension framework like Crossrider.
So go to crossrider.com, set up an account and create a new extension. Then open the background.js file and paste in code like this:
appAPI.ready(function($) {
appAPI.message.addListener({channel: "notifyPageUrl"}, function(msg) {
//Do something, like send an xhr post somewhere
// notifying you of the pageUrl that the user visited.
// The url is contained within msg.pageUrl
});
var opts = { listen: true};
// Note: When defining the callback function, the first parameter is an object that
// contains the page URL, and the second parameter contains the data passed
// to the context of the callback function.
appAPI.webRequest.onBeforeNavigate.addListener(function(details, opaqueData) {
// Where:
// * details.pageUrl is the URL of the tab requesting the page
// * opaqueData is the data passed to the context of the callback function
if(opaqueData.listen){
appAPI.message.toBackground({
msg: details.pageUrl
}, {channel: "notifyPageUrl"});
}
}, opts ); // opts is the opaque parameter that is passed to the callback function
});
Then install the extension! In the example above, nothing is being done with the detected pageUrl that the user is visiting, but you can do whatever you like here - you could send a message to the user, you could restrict access utilizing the cancel or redirectTo return parameters, you could log it locally utilizing the crossrider appAPI.db API or you could send the notification elsewhere, cross-domain, to wherever you like utilizing an XHR request from the background directly.
Hope that helps!
And to answer the question on security issues desktop-side, just note that desktop applications will have the permissions of the user under which they run. So if you are thinking of providing a desktop app that your users will run locally, say something that will detect urls they access by tapping into the network stream using something like winpcap on windows or libpcap on *nix varieties, then just be aware of that - and also that libpcap and friends would have to have access to a network card that can be placed in promiscuous mode in the first place, by the user in question.
the pcap / installed desktop app solutions are pretty invasive - most folks don't want you listening in on literally everything and may actually violate some security policies depending on where your users work - their network administrators may not appreciate you "sniffing", whether that is the actual purpose or not. Security guys can get real spooky so-to-speak on these kinds of topics.
The extension via Crossrider is probably the easiest and least intrusive way of accomplishing your goal if I understand the goal correctly.
One last note, you can get the current tab urls for all tabs using Crossrider's tabs API:
// retrieves the array of tabs
appAPI.tabs.getAllTabs(function(allTabInfo) {
// Display the array
for (var i=0; i<allTabInfo.length; i++) {
console.log(
'tabId: ' + allTabInfo[i].tabId +
' tabUrl: ' + allTabInfo[i].tabUrl
);
}
});
For the tab API, refer to:
http://docs.crossrider.com/#!/api/appAPI.tabs
For the background navigation API:
http://docs.crossrider.com/#!/api/appAPI.webRequest.onBeforeNavigate
And for the messaging:
http://docs.crossrider.com/#!/api/appAPI.message
And for the appAPI.db stuff:
http://docs.crossrider.com/#!/api/appAPI.db
Have you looked into the Scripting Bridge? You could have an app that launches, say, an Applescript which verifies if any of the well known browser is opened and ask them which documents (URL) they are viewing.
Note: It doesn't necessarily need to be an applescript; you can access the Scripting Bridge through cocoa.
It would, however, require the browser to support it. I know Safari supports it but ignore if the others do.
Just as a quick note:
There are ways to do it via AppleScript, and you can easily wrap this code into NSAppleScript calls.
Here's gist with AppleScript commands for Safari and Chrome. Firefox seems to not support AE.
Well obviously this is what I had come across on google.
chrome.tabs.
getSelected
(null,
function
(tab) {
alert
(tab.url);
}) ;
in pure javascript we can use
alert(document.URL);
alert(window.location.href)
function to get current url
Hi i am making a simple component in joomla having name image detail and i have to upload that image how can i upload image from backend. which one is better using extension or make custom. can you please share any good article for it. i have searched many more but due to lack of idea on joomla cannot find. hope you genius guys help me.
thanks i advance
Joomla Component for the exact scenario of your requirement will be very hard to find out. So you've two options:
1. Make your own component
2. Customize other similar type of component like gallery component
For uploading file from joomla component on admin if you're making your own component:
1. Just use move_uploaded_file php function.
2. copy this code, for joomla's standard fxn :
function upload($src, $dest)
{
jimport('joomla.client.helper');
$FTPOptions = JClientHelper::getCredentials('ftp');
$ret = false;
$dest = JPath::clean($dest);
$baseDir = dirname($dest);
if (!file_exists($baseDir)) {
jimport('joomla.filesystem.folder');
JFolder::create($baseDir);
}
if ($FTPOptions['enabled'] == 1) {
jimport('joomla.client.ftp');
$ftp = & JFTP::getInstance($FTPOptions['host'], $FTPOptions['port'], null, $FTPOptions['user'], $FTPOptions['pass']);
$dest = JPath::clean(str_replace(JPATH_ROOT, $FTPOptions['root'], $dest), '/');
if (is_uploaded_file($src) && $ftp->store($src, $dest))
{
$ret = true;
unlink($src);
} else {
JError::raiseWarning(21, JText::_('WARNFS_ERR02'));
}
} else {
if (is_writeable($baseDir) && move_uploaded_file($src, $dest)) { // Short circuit to prevent file permission errors
if (JPath::setPermissions($dest)) {
$ret = true;
} else {
JError::raiseWarning(21, JText::_('WARNFS_ERR01'));
}
} else {
JError::raiseWarning(21, JText::_('WARNFS_ERR02'));
}
}
return $ret;
}
If you want to use other's component and edit it according to need, download it:
http://prakashgobhaju.com.np/index.php?option=com_showcase_gallery&view=items&catid=1&Itemid=64
Remember it's a gallery component.
Uploading any file be it an image on your Joomla site is something which is so simple, and can be done using either the web based FTP and or the desktop FTP services like filezilla but only when you have saved the file you want to upload. Using the web based way, you need to log in to your host for example 000webhost, locate the file manager option, click on it and enter your domain username and password. Then go to public_html folder , create a new folder for your photos or images and click on upload. Locate your image and click on the tick link to start uploading.
Using the desktop way, you will need to unzip your file to add to joomla, open your FTP client like filezilla, locate the file on local host, input your log in details as provided by your host and once you are logged in to your account through filezilla, locate where you want to add the file and click on upload.
You can find a similar tutorial with regard here http://www.thekonsulthub.com/how-tos/how-to-upload-joomla-with-filezilla-to-your-hosting-servers-cpanel/ {entire thing}
Please please please make sure you use the filtering available in the MediaHelper. Specifically never trust uploaded images, always check first that they are valid file types, then that they are in the list of approved types of files listed in your global configuration, that the names do not contain html or javascript, and that the files themselves do not contain code. In particular I would recommend the MediaHelper::canUpload method which will check the majority of these things for you. If anything you should be checking even more strongly. Also make sure that you are checking whether the user has permission to upload. If anything you should make the checking even more restrictive. Use the APIs that joomla gives you, such as the built in media field.