i have a website which i want to monitor, and i have create a script that convert information i need in that website into a rss feed file. i want firefox to add this file as live bookmark. when type the location of the rss feed file, firefox does not display as usual rss feed. how to make firefox display it as i want ? sorry for my bad english.
update: after googling, i wonder if it's due to content-type header ? but i don't know how to set content-type of local file in firefox-addons :-(
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I send a pdf file to some customers. I want to know witch are opened my file. My dream will be to have a http request post inside the pdf to my server. But i search on some website without result.
Someone know if it's possible? And how i could do that?
Thanks a lot in advance
Instead of sending the PDF file, you might want to send a link (unique to each recipient) where the PDF can be downloaded. This link can log which of the recipients has downloaded the PDF.
This will be easier to set up and your results will be more trustworthy.
If i have a filename for a local file on the computer:
$img = "deskfile:///D%3A%2FSCANS%2F%23AUKT%2Fimg2014%2F2014-06+SP%2FEPSON007.jpg"
how can i upload it the server without using the "file selector"?
If i enter the file adresses in the url window of a browser i can display the image.
But if i load the image in tag they won't display. I've read it's becuse of restrictions in the browser.
I can't add a value caluse to the either.
Is there anyway to upload the image from the string?
Or can i at least open the correct directory in the "file selector" so the user wont have the browse the whole computer when looking for the file?
Yes there is a way. You can use the File API with Html5 and/or a polyfill for this to load the image in the browser before posting it back to the server. The best such polyfill that I know of is called Moxy/Plupload. It includes Flash and Silverlight fallbacks for older browsers.
You can display the image because it is stored locally in your computer. How do you know where is the image going to be in the user's computer. The only way to access the user's file system is through the file selector, once the user has selected a file you can then use any API to save that file in the server on your terms, but you will not be able to see each of your users file system from you page (security reasons). Could you elaborate more in what you are trying to accomplish? What exactly are you trying to do?
I need to create, for a specific project, an image manager that works via Ajax (to get the list of images, display them, ...).
The upload of new images, or image modification, is done via an Ajax script (using the new javascript File API).
The upload works fine, but I encounter a problem in case of image modification : the image displayed by the browser after upload is the cached one and not the uploaded one !!
I know it's a classic cache problem, that can be solved via the 'imagesrc?new Date.getTime()' hack, but I can't use it here.
in fact, this hack doesn't really reload the image, it only create a new instance of the image into the cache, associated to the image url 'imagesrc?new Date.getTime()'.
So, if at any moment, into the image manager, I retry to display the image, without adding the '?new Date.getTime()' to the src, it will display again the old image.
And I either cannot add this hack systematically (because, for example, if the image manager needs to display a lot of very heavy images, it's usefull to get them from the browser cache until they are modified).
I searched a way to solve this problem on internet (really replace the cached image after a javascript upload instead of using the above hack), but I found nothing.
Is there a way to do this, or is it totally impossible ?
Any help or suggestion would be greatly appreciated.
Many thanks in advance
Olivier
Configure your server to send ETag-headers for the images.
An ETag is a hash-value of the file that changes when the file is modified. If an ETag is sent, the browser will add an If-None-Match-header containing the last received ETag of that ressource on its next request and the server will respond with 304: not modified to save traffic if nothing has changed or send the new file if there is one.
I was reading about attacks on sites with the ability to upload and download files. Some attacks were about uploading a jpg which is really a html file and a comment about what if you want users to be allowed to store html and download them (or perhaps view them in the browser w/o using the save as feature).
Is there some type of flag i can use to say do not execute? I will want users to view images or video files other have uploaded. What if i'd like user html to be displayed but i dont want to force users to download them (content-disposition attachment).
Is there a way i can say hey here is some user data. It could be an image so i should allow img src to work. It could be an html so i'd like users to see it but dont allow it to read/write cookies/localstorage/call ajax request/etc?
-edit- Come to think of it. All of my user data is hosted on its own cookieless subdomain for static files. That would get rid of many problems i mention but what else is left to deal with? Also i believe my mime response completely depends on what my web server does (nginx atm) which could simply be look at the file extension.
-edit2- I adjusted my nginx config to add the application/unknown Content-Type. It seems to do exactly what i want. I saw a suggestion to use octet-stream for unknown files but that causes browsers (at least firefox) to try to download it even if its a jpg capable being viewed in browser.
It all depends on the Content-Type in your HTTP Response.
Browsers handle the data returned by the Content-Type in HTTP response.
For example if let say a user uploads a HTML file in a upload field supposedly for photo upload, as long as your web server gives Content-Type as image/jpeg (or image/png et al) the browser should handle it as an image - and in this case an invalid image because the image contains weird HTML stuff inside instead of the usual binary.
In any case, if you are feeling unsecure, you can always peek into the file data during upload validation.
I am trying to extract images from flash on the following web-site: http://meijer.shoplocal.com/meijer/default.aspx?action=entryflash&storeref=120
I noticed that every time I click on "Next image", an images is requested from sever. Sample URL is http://akimages.shoplocal.com/dyn_rppi/740.0.75.0/meijer/large/110206os_o_003_T1C1_2pw26.jpg
So, this URL is exactly what I need, but I don't know how to extract all these URLs from the .swf file I have. I don't have any experience with flash, but I think that URLs should be in the .swf file. I tried "grep '110206os_o_003_T1C1_2pw26' adspage_slider-2.swf", but didn't get any result :(((
Ivan,
Did you try a Flash decoder? It should allow you to access the code and respective resources. Another possible and easier way would be to use Fiddler2 to extract the URLs that you have clicked from the swf file. Still, before you move further, make sure that you're not breaking any of the site's Terms and Conditions.