Is there any way to pass a reference to a page in Puppeteer? Or is it limited only to serializable data?
For example, I'm imagining doing page.exposeFunction('require', ...) to begin making my own Electron, but that won't work if we can only return serializable data.
Puppeteer provides an API to control Chromium over the DevTools Protocol, which means that the Page class utilizes the Page Domain from the Chrome DevTools Protocol.
The return values obtained from the Page domain are all serializable.
Therefore, it appears that you are limited only to serializable data.
Related
When you create a Chrome extension and want to use OAuth 2.0, you can use a https://<app-id>.chromiumapp.org/* URL and be therefore able to have remote servers hit your browser instance directly (answered before - for example https://stackoverflow.com/a/30613603/61239). Does anyone know, or is able to theorize on how this works? And are you able to target any request at your browser, or does this only work for OAuth 2.0?
This is handled by the WebAuthFlow class, whose purpose is the following:
Given a provider URL, load the URL and perform usual web navigation until it results in redirection to a valid extension redirect URL.
The provider can show any UI to the user if needed before redirecting to an appropriate URL.
When the server instructs the browser to redirect to a valid extension redirect URL, that URL is instead passed to the callback function provided to chrome.identity.launchWebAuthFlow.
The 'appropriate' URLs are hardcoded in web_auth_flow.cc:
static const char kChromeExtensionSchemeUrlPattern[] =
"chrome-extension://%s/";
static const char kChromiumDomainRedirectUrlPattern[] =
"https://%s.chromiumapp.org/";
So the special URL https://<app-id>.chromiumapp.org/* only works in the context of a WebAuthFlow of the chrome.identity API. Note that the mechanism is totally internal to Chrome. The URL is never requested.
I need to pass one object from my App to webviews html page.
I know we can invoke function of webview's page uusing invokescriptasync and also pass data as parameter. but it takes only string as parameter.
object which I want to pass cannot be serialized. so I need to pass it as it is.
The app and the Webview run in isolated script contexts, thus you are limited to passing information as string properties of the args object given to invokeScriptAsync. This is by design for security reasons, with no means to bypass it; otherwise you open the potential for malicious code in a Webview to directly modify app objects.
I've been looking into if it's possible to create a web based version of my Chrome Plugin
now that it's relying completely on Trakt.TV's JSON API.
According to angular's documentation, it's possible to intercept HTTP requests at several levels, one is the HTTP Backend itself (mainly used for testing though) and the other is HTTPInterceptor.get
The basic idea is to wrap calls to Trakt.TV's JSONP api through http://json2jsonp.com/ and have them returned transparently to get around cross site scripting restrictions. This would not only be very useful for my own project, but for a lot of other people daeling with the same issues too (therefore i'll release the module after it's done, but I want to do it properly)
The basics should be simple:
Hook the $http.get request at the right level
Overwrite the original request made
Cancel an optional other request already set up
Hook it through $http.jsonp(http://json2jsonp.com/)
Return the original promise's success/fail when done
Questions:
Has anyone built anything like this yet? (Github searches revealed nothing)
Would you suggest using the HTTPBackend or the HTTPInterceptor?
why can't you just use the jsonp helper function?
httpBakend is a mockup service to fake a backend server is not used on live code. http interceptors would do what you want you just need to attach the callback function name to your request if the url contains what ever name you want to filter and then in the response interceptor you have to pass response to the callback function so the json to be evaluated. be aware that interceptors will inspect every request makde by angular which is not very eficien, unless you are only doing calls to the tv service.
like i said before a better approach is to use $http.jsonp function
https://docs.angularjs.org/api/ng/service/$http#jsonp
a word about interceptors they need to be defined as services and then be passed to HttpProvider during your apps configuration.
I am attempting to implement pushstate for my Backbone/NodeJS application. If I go to the following route /testRoute/123 within the browser itself, from another view, the associated views to /testRoute/123 load.
However, if I manually enter /testRoute/123 in the address bar, the browser returns a raw JSON feed for the object with id '123'.
How do I force Backbone to load the views when manually entering a URL?
This is not something Backbone can do (hense why pushState is disabled by default). You have to setup your server to redirect those requests to the root so that your HTML loads and Backbone can handle the route.
This is stated in the Backbone documentation:
Note that using real URLs requires your web server to be able to correctly render those pages, so back-end changes are required as well. For example, if you have a route of /documents/100, your web server must be able to serve that page, if the browser visits that URL directly. For full search-engine crawlability, it's best to have the server generate the complete HTML for the page ... but if it's a web application, just rendering the same content you would have for the root URL, and filling in the rest with Backbone Views and JavaScript works fine.
In case #idbehold's answer wasn't specific enough, here's a more detailed response to the same question.
I highly recommend looking at those links at the bottom of the response as they were exactly what I was looking for when faced with the same bother...
I am trying to build my application's admin UI using sling's userManager REST interface, but I would like to customize the json rendering. For example, I would like the response of "Get group" to include the members only if the requestor is a member.
I started by adding libs/sling/group/json.esp but I don't understand how I can get hold of the default response and customize it. Even if I had to query and form the json from scratch, where can I find information about APIs available to get this data from JCR/Sling?
I found that I could use ResourceTraversor to dump the resource object in json form but using new Packages.org.apache.sling.servlets.get.impl.helpers.ResourceTraversor(-1, 10000, resource, true) in the esp throws up an error
There are a few things to note here.
First, you should avoid putting your code under the libs directory. Your app code should live under the apps directory. When attempting to resolve a servlet for a URI, Sling will check apps before it checks libs so if you need to completely override functionality delivered with Sling, you would place your code in apps.
Second, what is (probably, depending on how you have things setup) happening when you request http://localhost:8080/system/userManager/group/administrators.tidy.1.json is the request is being handled by Sling's default GET servlet, because it finds no other script or servlet which is applicable. For research purposes it might be worth looking at the code for the default get servlet, org.apache.sling.servlets.get.impl.DefaultGetServlet, to see what it's using to render JSON. If you need to handle the rendering of a user group in a manner different than what the default GET servlet is doing, then you would need to create a servlet which is listening for requests for resources of type sling/group. It would probably be ideal to create a servlet for this purpose and register it with OSGI. http://sling.apache.org/site/servlets.html provides the various properties you would need to set to ensure the servlet resolver finds your servlet. Your servlet then would handle the request and as such would have direct and easy access to the requested resource.
Third, the particular need you specified is that you do not want the group members to render unless the requesting user is a member of the group requested. This is more of an access control issue than a rendering issue. Sling and Jackrabbit, out of the box, make as few assumptions as possible concerning how you might want your application to be setup. That being the case, you need to establish the access controls that are applicable for your particular use case. The wiki post on Access Control in the Jackrabbit wiki ( http://wiki.apache.org/jackrabbit/AccessControl ) goes into this to an extent.
Using directions from Paul Michelotti's answer, I researched further and found a suitable solution to my problem.
Sling accepts request filters (javax.servlet.Filter) through SCR annotations like the one below
#SlingFilter(scope = SlingFilterScope.REQUEST, order = Integer.MIN_VALUE)
Every request is passed down to the filter before it is processed by the servlet. Using the resourceType, I was able to distinguish requests to group.1.json and group/mygroup.1.json. Since the filter also has access to the current user, I was able to decide to deny the request if it did not abide by my security model and return a 404 status code.
Please refer to this page for details on filters. You can also check out the sample project urlfilter for directions on usage.