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Cannot use Firefox because I need do add custom file extension handlers.




Downloads API
13 years ago
10 years ago


(Reporter: Nick Young, Assigned: Ben Goodger (use ben at mozilla dot org for email))


Firefox Tracking Flags

(Not tracked)




13 years ago
User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0

I am a software developer.  I do internets.  I would like all of my clients to
drop IE amd use Firefox.  At present they cannot.  Normally the server does all
of the work.  Sometimes I need to activate a process on a cient's PC. I do this
by providing a download with a unique extension, .SAR, for example. The download
contains instrcutions for what must be done. I have an EXE application
assocaited with the file type but Firefox will not launch the application.

In the "Tools"-"Downloads"-"File Types" section there is a list of file types
which will auto-run but there is no way of adding to this list. However, if you
have several hundred clients it would be a pain to have to manually add an
extension on each computer. (You might have to travell hundreds of miles.) At
present using IE the client can click on an EXE download which installes the EXE
and enables the auto-download.

How can I write an EXE to achive the same thing for Firefox?

installing the extension in the PC's registry and setting the browserflags
setting so that it downloads without confirmation and activates the assocaited
EXE passing the location of the downloaded 

Reproducible: Always

Steps to Reproduce:

Comment 1

13 years ago
PS My comments are not intended to be in any way offensive.  I think that
FireFox is excellent. And I can see and appreciate all of the time, trouble and
pain that the many people envolved with this project have endured on our behalf.

Comment 2

13 years ago
Please do not implement anything that enables a server to start processes
(with root privileges) on my computer, for the Mac.

Are you looking for an equivalent of Active X?

Would a Remote XUL application do this job?

Are you wanting to do remote installs, if so look at xpi, (or rsync for
a non-browser solution)? Are you wanting to control your clients'
computers, if so look at VNC?

I may have missed the point, but this does not seem to be a vital part
of web browser (client) ... Have you ever found IE to have security
problems ...


13 years ago
Summary: Cannot use Firefox beaucse I need do add custom file extension handlers. → Cannot use Firefox because I need do add custom file extension handlers.

Comment 3

13 years ago
If the server provides a download with an extension of say .xyz I want the
application that has been associated with xyz to start running.  In IE the
download is saved to the temporary Internet folder and your application is
started being passed the file name as a parameter. 

What FireFox should do is:

1) Open the registry "HKEY Classes route" key for the file extension say ".sar"
and get the class name of the handler for that extension example

2) Open the handler registry key, which in this case is, "SaracsResource.Start"
and obtain the values for:

BrowserFlags and EditFlags

If the BrowserFlags is set to 9 then IE will ask for a confirm download. If the
flag is set to 8 no confirm download will be asked.

If the EditFlags is set to 65536 IE will read the registry key to obtain the
shell open command which in this case is: 
SaracsResource.Start\Shell\Open\Command= "r:\saracs\resource.exe" "/O" "%1"
The application will then be activated subsituting the downloaded file name with
the %1 on the command.

If have included 2 file so that you can reproduce the problem:

a) InstallSAR.Reg if you double click on this file it will setup the registry
entries for a test.  The normal application install creates these values in the
registry but I have edited the application exe to call notepad.exe.  If your
windows is not in c:\\winnt you will need to edit tyhis entry.

b) GetETR.SAR is a sample sar file.  If you double click on this file it should
open using notepad.  

c) I have places this GetETR.sar on one of my customer's web servers


If you open this url with IE notepad is launched correctly.  If you open using
Firefox it ignores the EditFlags registry setting and display the file content.

There is no security issue here becuase the Client has to download an installed
which sets the browser & edit flags settings. And is only doen for specific file

I hope this helps:~)

Background information:
I work for the company that does the travel arrangements for the F1 teams.  The
clients are using the browser to run an intranet.  They also access other hosts
as part of an Airline Resavation system using a special interface.  The download
is in fact lists of names.  The application which starts running types the list
of names into the special inteface, saving the staff hours of labour. 


Windows Registry Editor Version 5.00


@="Saracs Resources"




@="\"C:\\WINNT\\NOTEPAD.EXE\"  \"%1\""


@="\"c:\\winnt\\notepad.exe\" \"/O\" \"%1\""


@="\"c:\\winnt\\notepad.exe\" \"/P\" \"%1\""


@="\"c:\\winnt\\notepad.exe\" \"/PT\" \"%1\" \"%2\" \"%3\" \"%4\" \"%5\" \"%6\""


This is an example of a SAR file.

Comment 4

13 years ago
I have modidied the registry file to work better with notepad.exe, use this file
instead of the one posted earlier.

Windows Registry Editor Version 5.00


@="Saracs Resources"




@="\"c:\\winnt\\notepad.exe\" \"%1\""

Comment 5

13 years ago
Scratches head and thinks.....when I load the getetr.sar from the lan server
(http://tp-server/getetr.sar), FireFox opens the file. When I download the same
file from the remote server (http://www.outdoorgear.co.uk/getetr.sar) I get a
download screen.


Comment 6

13 years ago
I am not going to be of any real help. I don't do windows. Your problem sounds
soluble with any scripting langauge (perl, python, applescript ...), or possibly 
Filemaker (with or without a plugin), but possibly I have a picture of it 
that omits some crucial step.

It is possible that you are looking for Technical Support, in which case you
will get faster and better service at a resource such as
http://forums.mozillazine.org/viewforum.php?f=27 .

Comment 7

13 years ago
i believe the problem is that the server is sending it as application/octet-stream

[timeless@viper ~]$ HEAD http://www.outdoorgear.co.uk/getetr.sar|grep Type
Content-Type: application/octet-stream

change that to application/vnd.vipinertsoft.sar
and setup
[HKEY_CLASSES_ROOT\MIME\Database\Content Type\application/vnd.vipinertsoft.sar]

firefox might be more amenable to handling it then
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Last Resolved: 13 years ago
Resolution: --- → EXPIRED
Product: Firefox → Toolkit
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