Php FREAKS

[queer]

What to do if I enter an url in a form. I want to grab the content of this url, meaning I'd like to scan for .jpg files. The number of .jpg files in this url. File that is. An extern file on another server.
Any thoughts?

[fuzebox]

fopen() the url and parse it.

[queer]

Originally posted by fuzebox
fopen() the url and parse it.

But doesnt that discard the images due to hotlink prevention?

[JDog]

Originally posted by queer

But doesnt that discard the images due to hotlink prevention?

fopen() will just read it as source, then you can do a regex to find the images!

jDoG

[fuzebox]

Originally posted by queer

But doesnt that discard the images due to hotlink prevention?

No, you're downloading a html file and reading the contents, not downloading individual jpegs...

[queer]

Ahhh.. makes much more sense now... Thanks all.
But "IF" I wanted to open the found images, like, let's say I wanted to GRAB those images and save them to my drive, THEN I'd have a hotlink prevention problem right.

[Myst]

Originally posted by queer
What to do if I enter an url in a form. I want to grab the content of this url, meaning I'd like to scan for .jpg files. The number of .jpg files in this url. File that is. An extern file on another server.
Any thoughts?

hit me up on ICQ 298523037

[Basic_man]

nop

[modifried]

Originally posted by queer
Ahhh.. makes much more sense now... Thanks all.
But "IF" I wanted to open the found images, like, let's say I wanted to GRAB those images and save them to my drive, THEN I'd have a hotlink prevention problem right.

Not really. Send a HTTP_REFERER header with the URL being whatever the site is, and you should be able to grab the images without a problem.

[queer]

But but but I need to grab this image using php, then save it to my drive/server with php. Manipulated and changed with gdlibrary, which I know to perfection.. well.. nearly. lol

[modifried]

Originally posted by queer
But but but I need to grab this image using php, then save it to my drive/server with php. Manipulated and changed with gdlibrary, which I know to perfection.. well.. nearly. lol

You can use fopen() to open the image directly. If you're going to modify it, just open it and write it to a temp file, then open the temp file as a GD stream.

[fuzebox]

Originally posted by queer
Ahhh.. makes much more sense now... Thanks all.
But "IF" I wanted to open the found images, like, let's say I wanted to GRAB those images and save them to my drive, THEN I'd have a hotlink prevention problem right.

99% of the hotlinking protection out there is easily defeated by sending your own referrer header.

[queer]

Originally posted by fuzebox


99% of the hotlinking protection out there is easily defeated by sending your own referrer header.

This I dont understand.

[modifried]

Originally posted by queer

This I dont understand.

The sites prevent hotlinking by checking a HTTP header that is sent when the image is requested. All you have to do is mimic the same HTTP header and it thinks you're requesting the image from the same place .

[queer]

Originally posted by modifried


You can use fopen() to open the image directly. If you're going to modify it, just open it and write it to a temp file, then open the temp file as a GD stream.

I thought a .htaccess hotlink protection would deny me this, but I'm gonna try this method now anyhow. Thx.

[StuartD]

Originally posted by queer

This I dont understand.

He means you can spoof the referrer.

So I could make it seem like my server is actually your server. So your hotlinking protection wouldn't know the difference.

[modifried]

Originally posted by queer

I thought a .htaccess hotlink protection would deny me this, but I'm gonna try this method now anyhow. Thx.

If it does, just find out what page you're on when the image does work.

For example,

Let's say you're on:
www.mysite.com

And you click on an image (http://www.mysite.com/porn.jpg), and it works.

You then try to access the image directly, but it doesn't work. What you can do is use the header() PHP command to send the HTTP_REFERER variable to the browser, with the value "http://www.mysite.com", and the image will work.

[queer]

Originally posted by modifried


If it does, just find out what page you're on when the image does work.

For example,

Let's say you're on:
www.mysite.com

And you click on an image (http://www.mysite.com/porn.jpg), and it works.

You then try to access the image directly, but it doesn't work. What you can do is use the header() PHP command to send the HTTP_REFERER variable to the browser, with the value "http://www.mysite.com", and the image will work.

ahaaa... makes the light now... I think get it. At least Im gonna try this!

[modifried]

Originally posted by queer

ahaaa... makes the light now... I think get it. At least Im gonna try this!

Okay, good stuff. Syntax would be:

header("Referer: http://www.mysite.com");

[queer]

Thank you all. For your help and thoughts...
Who would ever think GFY could turn into something usefull... LOL