print.print_always_silent use to print the page without print dialog box. My question is, can we do this my PHP / JQUERY code?. Please Help me how know well abt this.
I hope not. That would mean any website could print any document from my printer when they want. Would be a huge security hole imho
This is certainly not possible through the browser with PHP, which runs on the server. It's also not possible with javascript: browser security ensures that. Imagine what might happen if any web site could print whenever it wanted to.
There are (or were) ActiveX controls available for IE that enabled this. It might be possible with a browser extension for Chrome or Firefox if you want to explore that.
One other possibility is setting up a printer on Google Cloud Print and having your PHP server print directly to that, bypassing the browser altogether. Handling the authentication behind such a scheme could be tricky, but the API is documented on Google's site.
Related
When I use MS Edge, Firefox or Opera to access Cloudfare-protected webpages, it shows the page correctly. However, using TWebBrowser it always shows the Cloudfare captcha page first.
How do I configure Delphi TWebBrowser to act like a "real" web browser which does not invite the Cloudfare page?
Note that this is occasional access to the page, and yet it triggered the cloudfare when the other browsers do not trigger at that same point in time.
Not an real answer but some things i encountered with TWebBrowser on the "real" Internet.
The Sites i encountered needed different things.
Some needed a Header Information with specific Browsers.
Executing java script to read your system envronment for language (geoblocking)
Some need cookies obtained through cross site Scripting (Fraud protection)
and many other Things for various reasons.
So, for your Target Website you can sniff where your call beginns to differ from a working Browser. And then trying to reproduce the functionality for Your Application.
What you encounter is not a TWebBrowser Problem in itself. It is Browser Funtionality used to have Features like Geoblocking, Addblock detection or whatever. So you need to implement the missing Parts: Cookie Storage and/or Java Script.
The downside is: you only find one missing Part after the other. So when you start you dont know if you will hit a dead end. Doing "real Internet Sites" with TWebBrowser (based on IE 5.5) was not easy and that was around 2005 ... in the early easy days...
Optional: If you have an Invitation from the Site owner through an Api Key (or something similar for Authentification) it should work with the TWebBrowser. If all the "Protection" is not needed it worked on almost everyting.
I never found a solid working Solution, but changing the Header to be IE5.5, enabling the newer Mode(non legacy?) and Cookies + Script helped.
If possible try it with the new Edge Component or an embedded Chrome / Firefox / Opera.
In the End we used a microsoft IE COM Component and not the Delphi Component. But even then, not everything was working.
I have awebsite, lets just call it search, in one of my browserpages open. search has a form, which when submitted runs queries on a database to which I don't have direct access. The problem with search is that the interface is rather horrible (one cannot save the aforementioned queries etc.)
I've analyzed the request (with a proxy) which is send to the server via search and I am able to replicate it. The server even sends back the correct result, but the browser is not able to open it. (Same origin policy). Do you have any ideas on how I could tackle this problem?
The answer to your question is: you can't. At least not without using a proxy as suggested in the answer by Walter, and that would mean your web site visitors would have to knowingly login to your web site using their other web site's credentials (hmm doesn't sound good...)
The reason you can't do this is related to security, if you could run a script on the tab next to the one with the site open (which is what I'm guessing you want to do), you would be able to do a CSRF attack and get any data you wish and send it to hack.com
This is, of course, assuming that there has to be a login somewhere in the process, otherwise there's no reason for you to not be able to create a simple form which posts the required query and gets the info.
If you did have access to the mentioned website, you would be able to support cross domain xml using JSONP.
It is not possible to bypass the same origin policy in javascript (assuming that you want to do it with that considering your question). You need to set up a proxy server side that is doing the request for you and returns the html.
A simple way of doing this in PHP would be like this:
<?php
echo file_get_contents("http://searchdomainname.com" . "?" . http_build_query($_GET, '', '&'));
?>
I am trying to analyze a POST request using firebug. Using the net panel I can see the request, however when the POST has success the page then reloads and I only have a couple of seconds to actually look at the request and see what is going on. Is there a way I can pause it much like when analyzing scripts using this tool?
There is a "Persist" button on some of the tabs in Firebug. Just make sure to click it before doing your post.
[edit] Second row, third button from the left, on the Console and Net tabs.
Even better, if you're on Windows you can use Fiddler - an amazing and free HTTP debugger developed by some important guy on the Microsoft IE team.
With it you can conditionally intercept GET or POST requests, inspect and change parameters, break on responses, change responses (headers or body), reissue old requests and generally screw with your application during development.
Simply one of the most useful web development tools. Ever.
May require a little tweaking for localhost - see here
One solution would be to remove the refresh of the page from your code.
Then run your code to see the results.
You can use web developer tools plugin for Mozilla firefox, and disable meta redirects
I'm writing an application, which becomes "useful" once user is browsing certain url.
I want to add feature to my application, that it will be automatically launched once user browses this url, I was thinking of writing some sort of watchdog to trigger it.
My question is, whether there is a generic way to get notified when user browses to urls, I want to support at least IE and FireFox, chrome and safari is nice to have.
I read about DDE and WWW_RegisterURLEcho, but from what I understand it's not supported by FireFox, and also little sample I wrote didn't work with IE as well.
Thank you in advance
some more questions **
Do Url Monikers and Asynchronous Pluggable Protocols help me here ? Is it supported by FireFox ?
If you have control over the website, you could have it write a cookie to the computer. Then have your application monitor for that cookie.
You can implement this in many ways and at many different layers.
At the highest level, you could implement a browser plugin. There is no cross-browser solution at this layer that will let you write the code once and work for every browser. On the easy end of the spectrum, Firefox, you could implement it entirely as a Javascript + XUL plugin and use built-in XPCom interfaces (nsIProcess) for launching your helper process. For IE you would need to write a COM, C++ and win32 BHO that handles DWebBrowserEvents2::BeforeNavigate2. This is the hardest thing to do. There are mechanisms for Safari, Chrome and other webbrowsers that you could use to achieve this same behavior, with varying degrees of difficulty.
At the next level you could implement an HTTP proxy, similar to Fiddler2, that redirects all HTTP traffic through your local proxy first. Each browser has a different way of configuring its proxy settings, but they're all basically registry settings or config files.
At the most basic level you could just snif all IP traffic going out of the machine, similar to the way Wireshark does it, and just look for http requests to your URL. This is probably more difficult to code, but would work for all browsers without any special per-browser configuration stuff going on. You may need to write a driver. I dunno, I've never done work at this level in the stack.
I am facing this problem while debugging a website.
Plugin used: tamper data for fire fox;
Possibilities: its a ajax request.
as you see in the image the tamper dialog dose not show anything for this request. for other request it shows the general options.
any known issue with this.
And I also want to know if any other better tool available for analyzing websites(live or remote, not on localhost)
Tamperdata is the buggiest thing ever made, even the UI takes 50 clicks to do anything. Look for another tool. I personally use HackBar to send simple POST/GET requests (there's a version that can modify cookies per request too I think), and Wireshark or livehttpheaders (although livehttpheaders is also buggy) when I need to analyze traffic.