Re: Secured photo rendering

2010-03-10 Thread Christopher Schultz
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hassan, On 3/10/2010 10:50 AM, Hassan Schroeder wrote: > On Wed, Mar 10, 2010 at 7:46 AM, Christopher Schultz > wrote: > >> Just for the sake of mental mast... er, fun! you could write a >> javascript event handler that ... > > ..would work until t

Re: Secured photo rendering

2010-03-10 Thread André Warnier
Christopher Schultz wrote: ... Just for the sake of mental mast... er, fun! you could write a javascript event handler that watched for un-focus events for the page (which would likely happen if you were using an external utility to take a screenshot) Actually it doesn't. On my PC, I use Irfa

RE: Secured photo rendering

2010-03-10 Thread Joseph Morgan
On Wed, Mar 10, 2010 at 7:46 AM, Christopher Schultz wrote: >> Just for the sake of mental mast... er, fun! you could write a >> javascript event handler that ... >..would work until the user switched off JavaScript? or kicked off `wget` >with the image URL? :-) ... or someone is using screen

Re: Secured photo rendering

2010-03-10 Thread Hassan Schroeder
On Wed, Mar 10, 2010 at 7:46 AM, Christopher Schultz wrote: > Just for the sake of mental mast... er, fun! you could write a > javascript event handler that ... ..would work until the user switched off JavaScript? or kicked off `wget` with the image URL? :-) -- Hassan Schroeder -

Re: Secured photo rendering

2010-03-10 Thread Christopher Schultz
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Peter, On 3/10/2010 10:37 AM, Peter Crowther wrote: > On 10 March 2010 15:30, János Löbb wrote: > >> When I use the DVD Player from Apple, I cannot take a screenshot even if I >> click myself to the Finder first. So there is something already in pr

Re: Secured photo rendering

2010-03-10 Thread André Warnier
Peter Crowther wrote: On 10 March 2010 15:30, János Löbb wrote: When I use the DVD Player from Apple, I cannot take a screenshot even if I click myself to the Finder first. So there is something already in practice that prevents from taking a screenshot :-) Yes - for an application that runs

Re: Secured photo rendering

2010-03-10 Thread Peter Crowther
On 10 March 2010 15:30, János Löbb wrote: > When I use the DVD Player from Apple, I cannot take a screenshot even if I > click myself to the Finder first. So there is something already in practice > that prevents from taking a screenshot :-) > > Yes - for an application that runs as a process on

Re: Secured photo rendering

2010-03-10 Thread János Löbb
On Mar 9, 2010, at 9:35 AM, David kerber wrote: Caldarale, Charles R wrote: From: André Warnier [mailto:a...@ice-sa.com] Subject: Re: Secured photo rendering But it should not, if the server sends the image with the appropriate "no caching" and/or "expires" HTTP header

Re: Secured photo rendering

2010-03-09 Thread André Warnier
Joseph Morgan wrote: I think the OP is asking how to prevent an image from being cached by a client and, I cannot imagine there is a way if the image is to display in a client at all, the image is now there, and the client can do anything it wants... But it should not, if the server sen

RE: Secured photo rendering

2010-03-09 Thread Joseph Morgan
Everyone is right... but... I think the OP has to better describe the need at hand. -Original Message- From: David kerber [mailto:dcker...@verizon.net] Sent: Tuesday, March 09, 2010 8:35 AM To: Tomcat Users List Subject: Re: Secured photo rendering Caldarale, Charles R wrote: >>

Re: Secured photo rendering

2010-03-09 Thread David kerber
Caldarale, Charles R wrote: From: André Warnier [mailto:a...@ice-sa.com] Subject: Re: Secured photo rendering But it should not, if the server sends the image with the appropriate "no caching" and/or "expires" HTTP headers. The headers don't matter, since the cli

RE: Secured photo rendering

2010-03-09 Thread Caldarale, Charles R
> From: André Warnier [mailto:a...@ice-sa.com] > Subject: Re: Secured photo rendering > > But it should not, if the server sends the image with the appropriate > "no caching" and/or "expires" HTTP headers. The headers don't matter, since the client has th

RE: Secured photo rendering

2010-03-09 Thread Joseph Morgan
being cached, right? -Original Message- From: Martin Gainty [mailto:mgai...@hotmail.com] Sent: Monday, March 08, 2010 9:11 PM To: Tomcat Users List Subject: RE: Secured photo rendering the easiest implementation would be develop a security fence for your front end (https with secure

RE: Secured photo rendering

2010-03-09 Thread Joseph Morgan
Joseph Morgan wrote: > I think the OP is asking how to prevent an image from being cached by a client and, I cannot imagine there is a way if the image > is to display in a client at all, the image is now there, and the client can do anything it wants... > >>But it should not, if the server s

Re: Secured photo rendering

2010-03-09 Thread André Warnier
David kerber wrote: Caldarale, Charles R wrote: From: André Warnier [mailto:a...@ice-sa.com] Subject: Re: Secured photo rendering But it should not, if the server sends the image with the appropriate "no caching" and/or "expires" HTTP headers. The headers don't mat

RE: Secured photo rendering

2010-03-08 Thread Martin Gainty
Is there a way to show the photo only thru the > page? somehow secure the photo? Thanks, > > Angelo > -- > View this message in context: > http://old.nabble.com/Secured-photo-rendering-tp27829228p27829228.html > Sent from the Tomcat - User mailing list archive at Nabble.com. > >

Re: [OT] Secured photo rendering

2010-03-08 Thread Christopher Schultz
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Angelo, On 3/8/2010 6:22 PM, Angelo Chen wrote: > As I notice, the photo rendering usually uses file system/Apache to speed up > displaying Where did you notice this? I can't imagine that Apache [httpd] improves the performance of rendering an image.

Secured photo rendering

2010-03-08 Thread Angelo Chen
message in context: http://old.nabble.com/Secured-photo-rendering-tp27829228p27829228.html Sent from the Tomcat - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional