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Thread: File Viewer Script

  1. #11
    Twayne
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    Default Re: File Viewer Script

    In news:RayC.4ubry5@no-mx.forums.netobjects.com,
    RayC <RayC.4ubry5@no-mx.forums.netobjects.com> typed:
    > Think more like an MP3, or video player, that delivers
    > the content without the user downloading.
    >
    > Here's an example: When I log into my bank, I can look at
    > my account transaction history. Beside an entry for a
    > cheque, there is a link called "view cheque". When I
    > click it, I see an image of the front and back of the
    > cheque. From this display I can read the cheque, but I
    > cannot save it. If I right-click and select "View Image",
    > I get a blank screen. If I right-click and select "Save
    > Image As...", nothing gets saved.
    >
    > My client site has a custom file manager script where
    > files can be uploaded and organized into folders. From
    > the file list, we would like the ability to display the
    > file in a similar way as my bank. I've seen such things
    > that can display PDFs or that use SWF. Most times,
    > however, the files have to be converted to the custom
    > format before being uploaded. Then using something
    > AJAX-like, the file is displayed in a viewer window when
    > clicked.
    >
    > Like 'Google Books' (http://tinyurl.com/3m3nzpo), I
    > guess. Or Scribd iPaper.
    >
    > I suppose it would have to either convert to PDF or SWF
    > on upload, or convert on the fly when a view request is
    > recieved. Hmmm... this gets complicateder and
    > complicateder.


    Exactly HOW, if it's not downloaded to at least your temp files, do you
    think it can be kept secure or away from anyone downloading it?
    There is nothing to display UNTIL the code is IN your computer.
    A lot of times the image can be found in the temp files, copied with a
    capture program and several other ways too.


    >
    > The 'Adeptol ' (http://www.ajaxdocumentviewer.com/)thing
    > is the closest (only) thing I've found -- but it seems
    > total overkill (and over $$).
    >
    >
    >
    > Ray Cambpell
    > Sounds In Sync
    > 'Unlimited Web Hosting $5.95/month'
    > (http://tinyurl.com/hosting595)





  2. #12
    Senior Member gotFusion's Avatar
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    Quote Originally Posted by Twayne View Post
    Exactly HOW, if it's not downloaded to at least your temp files, do you
    think it can be kept secure or away from anyone downloading it?
    There is nothing to display UNTIL the code is IN your computer.
    A lot of times the image can be found in the temp files, copied with a
    capture program and several other ways too.

    Most use a proprietary "viewer" that disables all keyboard input (so no capture keys) not a web browser.

    You can take a photograph of the screen using a camera but that is the limit of copy possibilities.
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  3. #13
    Senior Member RayC's Avatar
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    C'mon you guys. You're picking on me. []

    Of course I understand that for your browser to display anything it is downloaded to the local machine.

    But there is a difference between explicitly saving it to a folder and launching a local application, or allowing your computer to automatically launch an application, vs. having some sort of viewer that displays the file contents in a viewer.

    So, yes, it may reside in cache, but it's not easily extracted by the average user. Plus, the cache can be flushed after each session.

    Go to the Google Books link I provided earlier as an example. Load up "Alice In Wonderland". Now go find it in your cache. Let me know how it goes.

    For now, I'm trying to find a general purpose file viewer script that doesn't rely on the local machine. From whatever I can come up with, I can determine if it adequately addresses the security issue. Perhaps with some modifications it will be acceptable.
    Ray Cambpell
    Sounds In Sync
    Linked in

  4. #14
    Twayne
    Guest

    Default Re: File Viewer Script

    In news:gotFusion.4ucko5@no-mx.forums.netobjects.com,
    gotFusion <gotFusion.4ucko5@no-mx.forums.netobjects.com> typed:
    > Twayne wrote:
    >> Exactly HOW, if it's not downloaded to at least your
    >> temp files, do you think it can be kept secure or away
    >> from anyone downloading it?
    >> There is nothing to display UNTIL the code is IN your
    >> computer.
    >> A lot of times the image can be found in the temp files,
    >> copied with a capture program and several other ways too.
    >>

    >
    >
    > Most use a proprietary "viewer" that disables all
    > keyboard input (so no capture keys) not a web browser.


    So? It still can not display ANYTHING until an image, text, whatever has
    been sent to the computer. Thus, it exsts ON the computer in order to
    display it. The OP doesn't seem to understand that. It's irrelevant what's
    used to vew the downloaded data.

    >
    > You can take a photograph of the screen using a camera
    > but that is the limit of copy possibilities.


    No, there are Print Screen and its variations for the parts of the screen to
    capture, and many, many screen capture programs like PaintShop Pro,
    PhotoShop, Gimp I think, and a host of other programs that let you draw a
    box around any portion of the screen and even edit same, and then save it to
    a name of your own choosing. I'd never bother with a viewer unless one of my
    image editors weren't capable of getting hold of the image. But even so,
    many vewers still allow you to save the image to a file as long as you don't
    use the original name.
    Wiith today's LCD resolutions, you can get some pretty reasonably high
    resolution copies of the original images right off the screen.

    IF it can be seen on one's screen, it can be captured and saved. The ONLY
    way to avoid that is to not put it up on the 'net in the first place; use
    another delivery method & only lo-res encrypted thumbnails on the server.
    They have to be unencrypted to show them on anyone's screen but at least 256
    byte encryption should fairly well protect them from hacks. But if someone
    wants somethinig bad enough, any encryption can be defeated given sufficient
    time & resources.

    Unless he can rephrase his question more logcally, I don't think the OP is
    very aware of these processes.

    HTH,

    Twayne`
    >
    >
    >
    > *Mike - (turtle)*




  5. #15
    Twayne
    Guest

    Default Re: File Viewer Script

    In news:RayC.4ucsh1@no-mx.forums.netobjects.com,
    RayC <RayC.4ucsh1@no-mx.forums.netobjects.com> typed:
    > C'mon you guys. You're picking on me. []
    >
    > Of course I understand that for your browser to display
    > anything it is downloaded to the local machine.
    >
    > But there is a difference between explicitly saving it to
    > a folder and launching a local application, or allowing
    > your computer to automatically launch an application, vs.
    > having some sort of viewer that displays the file
    > contents in a viewer.
    >
    > So, yes, it may reside in cache, but it's not easily
    > extracted by the -average -user. Plus, the cache can be
    > flushed after each session.


    Actually, two things occur to me here: Easy vs hard to do was not part of
    the OPs description and t's actually pretty simple to find the data on the
    disk. As far as cache etc. goes, that problem is alleviated simply by
    keeping the file open; IF it worked that way, which it doesn't.
    >
    > Go to the Google Books link I provided earlier as an
    > example. Load up "Alice In Wonderland". Now go find it in
    > your cache. Let me know how it goes.


    I wouldn't be looking in cache to start with, and I'm beginning to think you
    know little about what you're talking about. I've routinely accomplished
    pulling images from the disk when I needed them. To take an "assignment"
    from you is silly because I know what the situation is where you obivously
    do not. I assure you, the data would be available.

    >
    > For now, I'm trying to find a general purpose file viewer
    > script that doesn't rely on the local machine. From
    > whatever I can come up with, I can determine if it
    > adequately addresses the security issue. Perhaps with
    > some modifications it will be acceptable.


    You need to make up your mind whether you want it secure on your server (I
    already covered that) or to not be retrievable from one's computer, which I
    also covered. You really should do a little more research on how these
    things work all the way from the server and onward. There are thousands of
    secure advice papers on the 'net which you should look into also.

    HTH,

    Twayne`

    >
    >
    > Ray Cambpell
    > Sounds In Sync
    > 'Unlimited Web Hosting $5.95/month'
    > (http://tinyurl.com/hosting595)





  6. #16
    Senior Member RayC's Avatar
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    " Wait a minute; I came here for an arguement!"

    " Oh, I'm sorry. This is abuse. Arguments are in 12-B, across the hall."



    Thanks, all, for your input. I still haven't found a single, simple multi-format online file viewer (regardless of the "security" aspect). The only contenders I've found cost thou$and$, which may be out of reach for this small business.

    I'm currently in an argu.... erm.. "discussion" with a licensing adjuster as to whether this application constitutes "Software as a Service".

    I suspect a solution could be cooked up by using several different viewers (images, excel, PDF), and calling the appropriate one based on the file type.

    I'm open to any further constructive suggestions on scripts, either here or via PM.
    Ray Cambpell
    Sounds In Sync
    Linked in

  7. #17
    Senior Member Adendum's Avatar
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    Default

    Twayne,

    What is it with you Twayne? Late, as ever, to the party, verbose beyond belief and worst of all attacking the OP for no good reason. Ray is asking for help, advice and suggestions as part of his research and you only see fit to berate him in public and then go on and have a go at gotFusion. Geeze! Go lie down and take a chill pill dude!
    Paul - Aditerum Ltd and AllSortsOfStuff Ltd
    NOF11 (in Admin mode!); Vista Premium 64bit; AMD Phenom IIx4 945 Processor 3.00Ghz; 8.0Gb RAM
    Wouldn't it be great if there was only a single browser to worry about!!!

  8. #18
    Max
    Guest

    Default Re: File Viewer Script

    Not cheap (prices start at $5,000), but came across this one:
    http://www.snowbound.com/Virtual_Vie..._overview.html
    http://www.advfn.com/news_SharePoint..._44394389.html

    I've not had time to look into it, but there might (or might not) be
    some mileage in this:
    http://eric-blue.com/2010/01/03/how-...-google-books/
    :-)

    Max

    ---
    RayC wrote:
    " Wait a minute; I came here for an arguement!"

    " Oh, I'm sorry. This is abuse. Arguments are in 12-B, across the
    hall."



    Thanks, all, for your input. I still haven't found a single, simple
    multi-format online file viewer (regardless of the "security" aspect).
    The only contenders I've found cost thou$and$, which may be out of reach
    for this small business.

    I'm currently in an argu.... erm.. "discussion" with a licensing
    adjuster as to whether this application constitutes "Software as a
    Service".

    I suspect a solution could be cooked up by using several different
    viewers (images, excel, PDF), and calling the appropriate one based on
    the file type.

    I'm open to any further constructive suggestions on scripts, either
    here or via PM.



    Ray Cambpell
    Sounds In Sync
    'Unlimited Web Hosting $5.95/month' (http://tinyurl.com/hosting595)


  9. #19
    Senior Member RayC's Avatar
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    Quote Originally Posted by Max View Post
    Not cheap (prices start at $5,000), but came across this one:
    http://www.snowbound.com/Virtual_Vie..._overview.html
    http://www.advfn.com/news_SharePoint..._44394389.html

    I've not had time to look into it, but there might (or might not) be
    some mileage in this:
    http://eric-blue.com/2010/01/03/how-...-google-books/
    :-)

    Max
    Thanks, Max

    I'll check those out. I think I stumbled upon the Eric Blue thing at one point, but neglected to bookmark it, so thanks for that sanity saver.

    I got a quote from them other guys; $1000 per year for the cloud-based service, $4,000 PER YEAR for the server license. Ouch.
    Ray Cambpell
    Sounds In Sync
    Linked in

  10. #20
    Twayne
    Guest

    Default OT: Re: File Viewer Script

    In news:Adendum.4uebu0@no-mx.forums.netobjects.com,
    Adendum <Adendum.4uebu0@no-mx.forums.netobjects.com> typed:
    > Twayne,
    >
    > What is it with you Twayne? Late, as ever, to the party,
    > verbose beyond belief and worst of all attacking the OP
    > for no good reason. Ray is asking for help, advice and
    > suggestions as part of his research and you only see fit
    > to berate him in public and then go on and have a go at
    > gotFusion. Geeze! Go lie down and take a chill pill dude!


    No such thing; I've offered nothing but accurate facts. You'll notice not a
    single person has disputed them with any further facts or even
    clarifications, which I'd be happy to know. The OP has received a lot of
    misinformation here along with partial responses indicating the poster
    didn't know either. A lot of people didn't respond to the OP's query but
    rather held a discussion between themselves which did the OP no good at all.
    There was only one purpose to my response and that was accurate information
    to the OP or response to a post which would have mislead his contradictory
    requirements that could have been made clearer.

    HTH,

    Twayne`

    >
    >
    > Paul - 'Aditerum Ltd' (http://www.aditerum.co.uk) and
    > 'AllSortsOfStuff Ltd' (http://www.allsortsofstuff.net)
    > NOF11 (in Admin mode!); Vista Premium 64bit; AMD Phenom
    > IIx4 945 Processor 3.00Ghz; 8.0Gb RAM
    > -wouldn't it be great if there was only a single browser
    > to worry about!!!-





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