[Flightgear-devel] [flightgear-devel] File Authorization
Hi, I want to ask a question regarding to the authorization problems on input/output operations. How can we have the value of $FG_ROOT and $FG_HOME in Nasal scripts. Is it possible? Is there a globally defined macro for them? I want to write a Nasal function that creates a file under $FG_ROOT, I want it to be portable, I mean both works on windows and linux machines. For this reason, I have to use a macro like $FG_ROOT, is it possible? Greetings. -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] [flightgear-devel] File Authorization
Behlül UÇAR wrote: I want to write a Nasal function that creates a file under $FG_ROOT, I want it to be portable, I mean both works on windows and linux machines. I'm a bit doubtful about the 'portability' of writing to $FG_ROOT in general, simply because this directory is supposed not to be writeable by the average user on most of the different installation targets. Please take into account that on almost every well-done system setup the user is permitted to write to his own user directory and nowhere else. Cheers, Martin. -- Unix _IS_ user friendly - it's just selective about who its friends are ! -- -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] [flightgear-devel] File Authorization
On Fri, 4 Sep 2009, Behlül UÇAR wrote: Hi, I want to ask a question regarding to the authorization problems on input/output operations. How can we have the value of $FG_ROOT and $FG_HOME in Nasal scripts. Is it possible? Is there a globally defined macro for them? I want to write a Nasal function that creates a file under $FG_ROOT, I want it to be portable, I mean both works on windows and linux machines. For this reason, I have to use a macro like $FG_ROOT, is it possible? IIRC the values of $FG_ROOT and $FG_HOME are available as properties (below sim/ ?). I think that by default you can only write files with certain extensions to $FG_HOME and nothing at all to $FG_ROOT. FlightGear's internal access rules for Nasal scripts are defined in $FG_ROOT/Nasal/IOrules but of course the file system permissions must also permit the action you want to do. Cheers, Anders -- --- Anders Gidenstam WWW: http://www.gidenstam.org/FlightGear/-- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] [flightgear-devel] File Authorization
Thanks both of you for your answers, I was thinking about modifying $FG_ROOT/Nasal/IOrules file for beating the permission issue but I hadn't thought about file permissions especially in linux. Then there are two solutions for beating this problem; First is creating an empty and permanent file before running Nasal code and modifying it instead of creating it inside the Nasal code. And the second is creating ~/home/FlightGear/ folder and working under it. Since first solution also requires super-user privileges in Linux, the ideal solution seems to be the second one. If someone has a better idea, it would be very good to hear it. Greetings. 2009/9/4 Anders Gidenstam anders-...@gidenstam.org On Fri, 4 Sep 2009, Behlül UÇAR wrote: Hi, I want to ask a question regarding to the authorization problems on input/output operations. How can we have the value of $FG_ROOT and $FG_HOME in Nasal scripts. Is it possible? Is there a globally defined macro for them? I want to write a Nasal function that creates a file under $FG_ROOT, I want it to be portable, I mean both works on windows and linux machines. For this reason, I have to use a macro like $FG_ROOT, is it possible? IIRC the values of $FG_ROOT and $FG_HOME are available as properties (below sim/ ?). I think that by default you can only write files with certain extensions to $FG_HOME and nothing at all to $FG_ROOT. FlightGear's internal access rules for Nasal scripts are defined in $FG_ROOT/Nasal/IOrules but of course the file system permissions must also permit the action you want to do. Cheers, Anders -- --- Anders Gidenstam WWW: http://www.gidenstam.org/FlightGear/ -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] [flightgear-devel] File Authorization
Behlül UÇAR wrote: And the second is creating ~/home/FlightGear/ folder and working under it. As far as I remember FlightGear will create a ~/.fgfs/ directory by default - if you don't prevent it from doing so, Martin. -- Unix _IS_ user friendly - it's just selective about who its friends are ! -- -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] [flightgear-devel] File Authorization
On Fri, 2009-09-04 at 17:38 +0300, Behlül UÇAR wrote: Thanks both of you for your answers, I was thinking about modifying $FG_ROOT/Nasal/IOrules file for beating the permission issue but I hadn't thought about file permissions especially in linux. IOrules is there for a reason, and it should not be beaten If it is possible to beat IOrules that is a bug that needs to be squashed. By default you may write to any file named $FG_HOME/*.sav $FG_HOME/*.log or $FG_HOME/Export/* There are more, but these seem the most logical file names for a nasal script. Then there are two solutions for beating this problem; Again, this is a security feature not a problem. I'm not even fully comfortable with allowing nasal to write at all, but I got out-voted. :) First is creating an empty and permanent file before running Nasal code and modifying it instead of creating it inside the Nasal code. And the second is creating ~/home/FlightGear/ folder and working under it. Since first solution also requires super-user privileges in Linux, the ideal solution seems to be the second one. If someone has a better idea, it would be very good to hear it. Greetings -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
