Re: Specify file download path with irev/revignitor

[Tim Selander]

Stephen, (and Jacque),

Thanks again for your reply -- got it about the browser 
controlling downloads for security reasons.


Also, some very good information here. I hadn't known about 
StackRunner and your idea of a thin client is great -- I can 
probably pre-install it on the MP3 players before we send them 
out. Simply have folk plug the players into the USB port, and 
when it shows up on the desktop, launch the client to make sure 
they have this month's content.


(Rather than music, we're doing lectures and seminars, etc. Savvy 
users are already handling their own downloads and ipods. This 
project is an attempt to wean our non-techie customers off mailed 
out CDs... gotta be something grandpa and grandma could handle.)


Also great link to the LiveCode Server docs -- I did not know 
about those! I got the freebie version of RunRev when I signed up 
for hosting at on-rev and have been working with that and it's 
user manual...


Appreciate the help.

Tim Selander
Tokyo, Japan


On 3/25/12 11:13 AM, stephen barncard wrote:

Ah - well that's the thing - the security features of web browsers strictly
don't allow control of the user's machine from the server side - that's
what those warnings for the user for plug-ins like flash and the livecode
plug-in are about. Changing stuff on a remote machine by a server is
forbidden for users' protection - otherwise the web would be unworkable
thanks to the criminal element. Those same protections are built-in by
design for Javascript on the browser side for the same reason. Hence the
invention of the Livecode plug-in.

That's why I thought you had a 'thin' client on the user's side that could
do what you want; your mentioning of "sending out" players.  You could do
this with a Livecode plugin, but that would require users to install
something on their machines anyway, and the future of this plugin has not
been defined lately, hence the recent discussions online. I feel a thin
client can give a better UI experience anyway and a lot easier to maintain
and support.

Your comment about the online documentation of Livecode server is correct -
a lot of new info is available with the version notes of the latest version
(5.0.2), but I get those through my involvement as a purchaser of the
server product to run on my own web host. I assume you've seen what the
Runrev site offers:
http://www.runrev.com/developers/documentation/server/

These limitations that web browsers have do not diminish the coolness of
Livecode server; it just requires being open to do it another more secure
way. You never want to do stuff without the permission of your users, that
would definitely creep them out.

Depending on the scope of your project, number of users, etc, is it
possible you could do this entirely 'in the cloud'? That way you could
control the addition and deletion of files, giving each user their own
space for files, and provide the player in a browser.

Otherwise I'd suggest you build a thin user client for her to download and
live on her machine. Or possibly use a 'splash screen' approach where a
small compiled application would hold the basic livecode 'stuff', and a
script could do a

go URL "http://musicsource/playerstack.lc";  on startup

thereby loading your latest stack version of your player that could be
'updated in the store' anytime you wish, as that stack would live on your
server. Yet this client could have access to any folder your user has
access to on her machine. This thin client can then easily manage the audio
files in the user-selected (or default) folder.

I've done this myself as a convenience to run many utility stacks that I
store on my server, and run on one of my several machines, a kind of
network based Livecode stack player. Mine is a network variation of Ken
Ray's 
Stackrunner.

It sounds like a cool project - being open and controlling expectation of
what can be and can't be done is the key, work around those limitations
(that everyone else has to deal with), and move forward. Livecode gives us
many ways to create the solution to our problems.

hope this helps.

On 24 March 2012 17:00, Tim Selander  wrote:


Thanks for your reply, Stephen.

Sorry for not being clear. I'm wanting to do this from a web page hosted
on the on-rev.com site, using the  scripting language with the
revignitor framework. The "clients" have no LC client installed other than
a web browser.

One of my frustrations of using on-rev and the scripting language is that
there does not seem to be any documentation clearly showing what LC
features are _not_ available through the server scripting language. But it
is still far easier for me to use than php.

I have tried, of course, setting the full path/filename of the files I
want to download, but it has not worked correctly so far... hence the post!

Many thanks,

Tim Selander
Tokyo, Japan



Stephen Barncard
San Francisco Ca. USA

more about sqb

Re: Specify file download path with irev/revignitor

[J. Landman Gay]

On 3/24/12 7:00 PM, Tim Selander wrote:

Thanks for your reply, Stephen.

Sorry for not being clear. I'm wanting to do this from a web page hosted
on the on-rev.com site, using the  scripting language with the
revignitor framework. The "clients" have no LC client installed other
than a web browser.

One of my frustrations of using on-rev and the scripting language is
that there does not seem to be any documentation clearly showing what LC
features are _not_ available through the server scripting language. But
it is still far easier for me to use than php.

I have tried, of course, setting the full path/filename of the files I
want to download, but it has not worked correctly so far... hence the post!


I don't think you can control where the user downloads files. You can 
only control the server side; the browser controls the client side. 
That's actually good, because otherwise any web page could install 
things in places the user didn't know about.


The only things you can control in a web page, no matter what language 
you're using, are things that happen on the page itself, or which are 
related to the server that hosts the page. Once you send data to the 
user, it's out of your hands. You have no control over their machine, 
their file system, or their applications.


--
Jacqueline Landman Gay | jac...@hyperactivesw.com
HyperActive Software   | http://www.hyperactivesw.com

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Re: Specify file download path with irev/revignitor

[stephen barncard]

Ah - well that's the thing - the security features of web browsers strictly
don't allow control of the user's machine from the server side - that's
what those warnings for the user for plug-ins like flash and the livecode
plug-in are about. Changing stuff on a remote machine by a server is
forbidden for users' protection - otherwise the web would be unworkable
thanks to the criminal element. Those same protections are built-in by
design for Javascript on the browser side for the same reason. Hence the
invention of the Livecode plug-in.

That's why I thought you had a 'thin' client on the user's side that could
do what you want; your mentioning of "sending out" players.  You could do
this with a Livecode plugin, but that would require users to install
something on their machines anyway, and the future of this plugin has not
been defined lately, hence the recent discussions online. I feel a thin
client can give a better UI experience anyway and a lot easier to maintain
and support.

Your comment about the online documentation of Livecode server is correct -
a lot of new info is available with the version notes of the latest version
(5.0.2), but I get those through my involvement as a purchaser of the
server product to run on my own web host. I assume you've seen what the
Runrev site offers:
http://www.runrev.com/developers/documentation/server/

These limitations that web browsers have do not diminish the coolness of
Livecode server; it just requires being open to do it another more secure
way. You never want to do stuff without the permission of your users, that
would definitely creep them out.

Depending on the scope of your project, number of users, etc, is it
possible you could do this entirely 'in the cloud'? That way you could
control the addition and deletion of files, giving each user their own
space for files, and provide the player in a browser.

Otherwise I'd suggest you build a thin user client for her to download and
live on her machine. Or possibly use a 'splash screen' approach where a
small compiled application would hold the basic livecode 'stuff', and a
script could do a

go URL "http://musicsource/playerstack.lc";  on startup

thereby loading your latest stack version of your player that could be
'updated in the store' anytime you wish, as that stack would live on your
server. Yet this client could have access to any folder your user has
access to on her machine. This thin client can then easily manage the audio
files in the user-selected (or default) folder.

I've done this myself as a convenience to run many utility stacks that I
store on my server, and run on one of my several machines, a kind of
network based Livecode stack player. Mine is a network variation of Ken
Ray's 
Stackrunner.

It sounds like a cool project - being open and controlling expectation of
what can be and can't be done is the key, work around those limitations
(that everyone else has to deal with), and move forward. Livecode gives us
many ways to create the solution to our problems.

hope this helps.

On 24 March 2012 17:00, Tim Selander  wrote:

> Thanks for your reply, Stephen.
>
> Sorry for not being clear. I'm wanting to do this from a web page hosted
> on the on-rev.com site, using the  scripting language with the
> revignitor framework. The "clients" have no LC client installed other than
> a web browser.
>
> One of my frustrations of using on-rev and the scripting language is that
> there does not seem to be any documentation clearly showing what LC
> features are _not_ available through the server scripting language. But it
> is still far easier for me to use than php.
>
> I have tried, of course, setting the full path/filename of the files I
> want to download, but it has not worked correctly so far... hence the post!
>
> Many thanks,
>
> Tim Selander
> Tokyo, Japan


Stephen Barncard
San Francisco Ca. USA

more about sqb  
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Re: Specify file download path with irev/revignitor

[Tim Selander]

Thanks for your reply, Stephen.

Sorry for not being clear. I'm wanting to do this from a web page 
hosted on the on-rev.com site, using the  scripting 
language with the revignitor framework. The "clients" have no LC 
client installed other than a web browser.


One of my frustrations of using on-rev and the scripting language 
is that there does not seem to be any documentation clearly 
showing what LC features are _not_ available through the server 
scripting language. But it is still far easier for me to use than 
php.


I have tried, of course, setting the full path/filename of the 
files I want to download, but it has not worked correctly so 
far... hence the post!


Many thanks,

Tim Selander
Tokyo, Japan

On 3/25/12 1:29 AM, stephen barncard wrote:

not clear about your methodology on the download.. you might need to set
the defaultFolder

are use using RevBrowser in some way or is this a  LC client app on the
client and RevIgniter on the host?

anyway for detection of a folder on the client machine (from the docs)
if there is a folder [filepath] then go card ID 3445

The folderPath specifies the name and location  of a
folder  you want to check. If you specify a
name but not a location, LiveCode looks for the
folderin the
defaultFolder.


Delete works the same way:


delete file "My Test.rev"


the defaultFolder works for this command too. Errors should be in the
result - this deletes immediately, and file is not put into the trash.



On 24 March 2012 00:29, Tim Selander  wrote:


Hi,

Have wasted enough hours -- time to ask the pros on the list!

We are passing out free, promotional MP3 players to our customers.

Weekly, they will be allowed to download from our web site (hosted at
on-rev.com) new free mp3 files not available to the general public. Want
customers/users of our web page to be able to click one button to download
a set of files to specific folder -- the mp3 player, for which we know the
volume name (set up before sending out the players).

Want to check for the volume's existence (player is/is not mounted on
computer) and then download the list of mp3s to it, failing with an error
message if the player is full.

I can get the files to download, but only to the download folder specified
by the browser.

1) How can I set the path for the download using 'raw' irev/lc scripting,
or revigniter?
2) How can I first check for existence of volume?
3) (Bonus points!) How can I erase files off the volume/players? (Of
course only erasing files gotten from us -- known filenames -- and with
their permission.)

Any help appreciated.

Tim Selander
Tokyo, Japan

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Re: Specify file download path with irev/revignitor

[stephen barncard]

not clear about your methodology on the download.. you might need to set
the defaultFolder

are use using RevBrowser in some way or is this a  LC client app on the
client and RevIgniter on the host?

anyway for detection of a folder on the client machine (from the docs)
if there is a folder [filepath] then go card ID 3445

The folderPath specifies the name and location  of a
folder  you want to check. If you specify a
name but not a location, LiveCode looks for the
folderin the
defaultFolder .


Delete works the same way:


delete file "My Test.rev"


the defaultFolder works for this command too. Errors should be in the
result - this deletes immediately, and file is not put into the trash.



On 24 March 2012 00:29, Tim Selander  wrote:

> Hi,
>
> Have wasted enough hours -- time to ask the pros on the list!
>
> We are passing out free, promotional MP3 players to our customers.
>
> Weekly, they will be allowed to download from our web site (hosted at
> on-rev.com) new free mp3 files not available to the general public. Want
> customers/users of our web page to be able to click one button to download
> a set of files to specific folder -- the mp3 player, for which we know the
> volume name (set up before sending out the players).
>
> Want to check for the volume's existence (player is/is not mounted on
> computer) and then download the list of mp3s to it, failing with an error
> message if the player is full.
>
> I can get the files to download, but only to the download folder specified
> by the browser.
>
> 1) How can I set the path for the download using 'raw' irev/lc scripting,
> or revigniter?
> 2) How can I first check for existence of volume?
> 3) (Bonus points!) How can I erase files off the volume/players? (Of
> course only erasing files gotten from us -- known filenames -- and with
> their permission.)
>
> Any help appreciated.
>
> Tim Selander
> Tokyo, Japan
>
> __**_
> use-livecode mailing list
> use-livecode@lists.runrev.com
> Please visit this url to subscribe, unsubscribe and manage your
> subscription preferences:
> http://lists.runrev.com/**mailman/listinfo/use-livecode
>



-- 



Stephen Barncard
San Francisco Ca. USA

more about sqb  
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Specify file download path with irev/revignitor

[Tim Selander]

Hi,

Have wasted enough hours -- time to ask the pros on the list!

We are passing out free, promotional MP3 players to our customers.

Weekly, they will be allowed to download from our web site 
(hosted at on-rev.com) new free mp3 files not available to the 
general public. Want customers/users of our web page to be able 
to click one button to download a set of files to specific folder 
-- the mp3 player, for which we know the volume name (set up 
before sending out the players).


Want to check for the volume's existence (player is/is not 
mounted on computer) and then download the list of mp3s to it, 
failing with an error message if the player is full.


I can get the files to download, but only to the download folder 
specified by the browser.


1) How can I set the path for the download using 'raw' irev/lc 
scripting, or revigniter?

2) How can I first check for existence of volume?
3) (Bonus points!) How can I erase files off the volume/players? 
(Of course only erasing files gotten from us -- known filenames 
-- and with their permission.)


Any help appreciated.

Tim Selander
Tokyo, Japan

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