So I am trying to inject a script to run on any page using addScriptToEvaluateOnNewDocument on chrome 79, but it doesn't seem to be working.
I am using the ruby gem chrome_remote, which gives a pretty basic access to the CDP.
Here is an example ruby:
scpt =<<EOF
window.THIS_WAS_SET = 1
EOF
ChromeRemote.client.send_cmd 'Page.addScriptToEvaluateOnNewDocument',{source: scpt}
ChromeRemote.client.send_cmd "Page.navigate", url: "http://localhost:4567/test"
I then start chrome with --remote-debugging-port=9222
The Page.addScriptToEvaluateOnNewDocument will always return {"identifier"=>"1"} (even if I call it multiple times, say with different scripts).
And when I open console on the opened tab in Chrome (which works, so I know CDP in general is working), and check the value of window.THIS_WAS_SET, it is undefined.
Is there any way to verify the command was sent to the browser, such as a log in the browser it was received? Any way to see what scripts were injected? Why does each call always return a ScriptIdentifier of 1, that seems problematic?
Anyone have a similar example working?
you should call "page.enable" first.
Related
I'm currently developing a Firefox add-on and I noticed some logging issues in the add-on devtools (for the background script) page. Whenever I'm trying to console.log some object, I don't see any keys or values of this object in the console. There's also no way to "expand" the object like I can in the "regular" (not for an add-on) Firefox browser console.
So, if I e.g. open the add-on devtools and type console.log({ test: "test" }), I only do get "Object { }" as an output:
If I try to log an error I do get a similar result (I can e.g. still log err.message):
try {
throw new Error("");
} catch (err) {
console.log(err);
}
Since I'm currently developing the add-on locally, I'm using web-ext to launch and watch the add-on. web-ext run is essentially launching Firefox without any profile which I thought may explain the difference compared to a regular Firefox browser console.
However, even if I load the add-on in my normal Firefox profile (load temporary add-on), I do see the same behavior for any add-on devtools console.
Is there any setting in the Firefox (add-on) console (or in my preferences) that I can use to log the whole object like it does in the normal Firefox console, e.g. if I open devtools for a regular webpage:
It's hard to tell what's going on without seeing the relevant code for your Firefox add-on, but I have a hunch that this is happening because of reference changes in your script.
In Javascript, an object is actually a reference to a location in memory. So when you run console.log(obj), and that object is modified before you access the console, then it may show up as empty (i.e. because the value being referenced has changed).
I would make sure that the object that you are trying to log is not modified after you log it. If there are any other objects based on the one that you are trying to log, changes to them may also cause your initial object to change as well.
You can try JSON encoding to get around this for logging purposes:
console.log(JSON.parse(JSON.stringify(obj)));
If that's not the issue, then perhaps there's some weird async behavior going on. In that case, you can try logging the object at several other points in your code to see exactly where this behavior starts.
I try to create a program which will automate fetching data from one of the Google services. By using chrome and watir (which is basically a Ruby library build on top of the Selenium). Everything works fine as long as I keep my browser open. But when I minimize window, my program is not even able to pass a login process since it cannot find certain elements. This is my code to login:
#browser = Watir::Browser.new :chrome, options: { detach: true }
#browser.goto BASE_URL
#browser.text_field(name: 'identifier').set USER_EMAIL
#browser.element(xpath: '//*[#id="identifierNext"]').click
#browser.text_field(xpath: '//input[#type="password"]').set USER_PASSWORD
#browser.element(xpath: '//*[#id="passwordNext"]/div/button/div[2]').click
When my browser is minimize, during attempt to set a password I get this error message:
*** Watir::Exception::UnknownObjectException Exception: element located, but timed out after 30 seconds, waiting for
#<Watir::TextField: located: true; {:xpath=>"//input[#type="password"]", :tag_name=>"input"}> to be
present
And it works just fine as an open window. Even if I maximize the window during whole process program is suddenly able to locate missing input fields. The same story goes in many other points further. Program is not able to locate some elements unless chrome window is open.
Needless to say it works even worse in headless mode and I'm basically not able to locate any of those elements in html code.
As far as I understand Google services frontend side are build with Angular framework which inject html code dynamically. But shouldn't selenium pretend to act like a regular user and trigger the same responses on minimized and open window (and the headless mode as well)?
Is is some kind of blockade from Google to prevent this kind of automated proces and how can I bypass it?
Is this an issue with Chrome and switching for e.g. Firefox would fix it?
Can I implement some additional actions to actually mimic human interaction and pretend that my Chrome window is open?
Firefox seems to fail on registering a ServiceWorker for Push Notifications, with an error "InvalidStateError: An attempt was made to use an object that is not, or is no longer, usable", but the code works in Chrome and Edge, and appears to be compliant with the examples online and the spec.
I've thrown an example up on one of my test sites, https://wiegandtech.net/ - visiting it in Chrome will prompt for permission and then opt-in successfully, sending the info to the server. But Firefox prompts, doesn't complete the registration, and doesn't fire any error or throw anything into the console. When I try to debug, it seems to never return from navigator.serviceWorker.ready.then call - I debug in and reg is undefined, even though the promise says it shouldn't be. I can find no reason why this is failing. I do see in Fiddler that FF gets the worker file, so it appears to be starting the call, but never finishing? The worker is valid JavaScript, as far as I can tell. Does anyone have any documentation on how Firefox's implementation is different from Chrome's/the spec?
Firefox requires the ServiceWorker's URL to end in .js - I was using an ASP.Net site and returning javascript but through my own controller. When I just give it the URL for the .js file itself, it now works. Would file a bug, but too non-trivial to setup a site given that ServiceWorkers require a real life site to troubleshoot, and their source code doesn't appear to be on github.
I was messing around and recklessly trying to implement SSL with Sinatra. I was using many scripts that I found on the internet without actually knowing what they did. I then realized I didn't actually need SSL and now sinatra is completely broken.
No matter what my app is, it always always prints "!! Invalid request" on the terminal whenever it receives a request from the browser. I've noticed that the http://localhost:4567 always switches to https://localhost:4567 in the browser URL.
I would like to have Sinatra act like it did when I originally installed it.
I'm new to this...
Uninstall & reinstall Sinatra and Ruby
I want to change the settings of firefox so as to allow it to make cross domain ajax calls. Since due to the security feature of the firefox it doen't allow ajax calls to be made. I know if it is in same domain it will allow. I have a code given bellow which in safari works fine but firefox doesn't display the results when it calls csce server then since the code is on local machine doesn't allow it and returns error. I know it will start working if I load my this code to csce server but I want to run the code from my machine. So can anyone help me in resolving this. I have spent past couple of days just searching for this solution.
Kindly suggest how to achieve this or should I go with some older version of firefox?
I googled and set the parameters of browser in config file as specified in this site but it still doesn't work.
http://code.google.com/p/httpfox/issues/detail?id=20
Maybe you could use privoxy and tell it to inject something like "Access-Control-Allow-Origin: *" in the server response.
To do this, you would have to go into the file user.filter (create it if it doesn't exist) in privoxys configuration directory and insert something like this:
SERVER-HEADER-FILTER: allow-crossdomain
s|Server: .*|Access-Control-Allow-Origin: *|
Instead of Server, you can also use any other header that's always present and you don't need.
And this into user.action:
{+server-header-filter{allow-crossdomain}}
csce.unl.edu
Note: I didn't test it.
https://developer.mozilla.org/En/HTTP_access_control
http://config.privoxy.org/user-manual/
This appears to enable XSS from file:// pages in Firefox 4, although it prompts you so might not be suitable for more than simple test pages:
netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");