Re: [Rd] linking to package directories broken in R = 2.10 beta

2009-10-18 Thread Duncan Murdoch

On 17/10/2009 1:57 PM, Thomas Petzoldt wrote:

Duncan Murdoch wrote:

Thomas Petzoldt wrote:


[...]

This is fine, but in contrast to older versions (= 2.9.2) no 
automatic index is created for the linked directory, so we now get:



URL /library/foo/examples/ was not found

but linking to *individual files* (e.g. examples/example.R) works as
expected. We can, of course, add manually maintained index files
but I would much prefer if a default index would be created for the
directory if no index.html is found.

By index in R = 2.9.2, you mean the default directory listing 
produced by the web server, rather than something produced by R, 
right?


Yes, I mean the default directory listing produced by (most) web servers.

The R server does that now if the directory is named doc, but not 
for an arbitrary path. We are concerned about security: any user on 
your system who can guess your port number can access your help 
system, so we want to be sure that such users can't access private 
files.



Hmm, I see and have some tendency to understand that this may be an 
issue for certain multi-user systems. Looking into the svn log (and 
compiling R) it appears that the remaining possibilities where also 
regarded as security issue and are now locked down too.


Well, I'm not yet completely convinced that this was a good idea.

1) It does not completely solve security issues; what is so different
between the library/foo/doc and library/foo/examples ???


The doc directory is known to be visible.  It might surprise someone if 
arbitrary directories were visible, and readable by any user.



2) The change will introduce additional work for package authors
that used internal links within their packages. I can, of course,
reorganize everything below doc, e.g. /library/foo/doc/examples ... but
this means that these things are even more hidden.


Why would someone know to look in .../examples?  Just update whatever 
hint you gave them to look there, and tell them to look in 
.../doc/examples instead.  I don't think it's likely that most people 
would discover either directory without a hint somewhere.  If they were 
looking for examples, they'd look in the documented places, the Examples 
section of man pages, or in the vignettes.



3) However, according to the changed R-Exts, it was obviously decided
that this was necessary, so *I* will do the required reorganization.


I think it was not so much a decision that this was necessary, as that 
it was prudent.


Duncan Murdoch



I hope that other package authors accept this change of the rules too.

Nevertheless, thank you very much for the new help system.

Thomas P.

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Re: [Rd] linking to package directories broken in R = 2.10 beta

2009-10-18 Thread Thomas Petzoldt

Duncan Murdoch wrote:

[...]

The doc directory is known to be visible.  It might surprise someone if 
arbitrary directories were visible, and readable by any user.



2) The change will introduce additional work for package authors
that used internal links within their packages. I can, of course,
reorganize everything below doc, e.g. /library/foo/doc/examples ... but
this means that these things are even more hidden.


Why would someone know to look in .../examples?  Just update whatever 
hint you gave them to look there, and tell them to look in 
.../doc/examples instead.  I don't think it's likely that most people 
would discover either directory without a hint somewhere.  If they were 
looking for examples, they'd look in the documented places, the Examples 
section of man pages, or in the vignettes.



3) However, according to the changed R-Exts, it was obviously decided
that this was necessary, so *I* will do the required reorganization.


I think it was not so much a decision that this was necessary, as that 
it was prudent.


Duncan Murdoch


[...]

ok, I will agree, but let me add one final thought: What is with the 
/demo directory?


Thomas P.

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Re: [Rd] linking to package directories broken in R = 2.10 beta

2009-10-18 Thread Duncan Murdoch

On 18/10/2009 4:45 PM, Thomas Petzoldt wrote:

Duncan Murdoch wrote:

[...]

The doc directory is known to be visible.  It might surprise someone if 
arbitrary directories were visible, and readable by any user.



2) The change will introduce additional work for package authors
that used internal links within their packages. I can, of course,
reorganize everything below doc, e.g. /library/foo/doc/examples ... but
this means that these things are even more hidden.
Why would someone know to look in .../examples?  Just update whatever 
hint you gave them to look there, and tell them to look in 
.../doc/examples instead.  I don't think it's likely that most people 
would discover either directory without a hint somewhere.  If they were 
looking for examples, they'd look in the documented places, the Examples 
section of man pages, or in the vignettes.



3) However, according to the changed R-Exts, it was obviously decided
that this was necessary, so *I* will do the required reorganization.
I think it was not so much a decision that this was necessary, as that 
it was prudent.


Duncan Murdoch


[...]

ok, I will agree, but let me add one final thought: What is with the 
/demo directory?


It's not displayed by the help system, it is displayed by the demo() 
function.  There wasn't a way to get to it through the help system in 
previous versions, was there?  (If you were running a browser you could 
browse files on the local file system, and you could construct a \url{} 
in a man page, but I don't think there were any links to the demo 
directory generated by R, were there?)


Duncan Murdoch

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[Rd] linking to package directories broken in R = 2.10 beta

2009-10-17 Thread Thomas Petzoldt

Dear R developers,

some of our packages come with additional programming examples in a 
directory called /examples which is created from /inst/examples.


This directory is linked from the docs (e.g. in inst/doc/index.html):

dl
dta href=../examples/examples/a:
ddSource code of examples
/dl

Given, that we have a package foo this is resolved to:

file:///C:/Programme/R/R-2.9.2/library/foo/examples/

with R = 2.9.2. With R 2.10 beta (R-beta_2009-10-16_r50118.tar.gz) and 
R-devel (svn rev. 50118) we get:


http://127.0.0.1:26383/library/foo/examples/

This is fine, but in contrast to older versions (= 2.9.2) no automatic 
index is created for the linked directory, so we now get:


URL /library/foo/examples/ was not found

bu linking to *individual files* (e.g. examples/example.R) works as 
expected. We can, of course, add manually maintained index files but I 
would much prefer if a default index would be created for the directory 
if no index.html is found.


I very much enjoy the new help system and would be even more happy if 
that issue could be fixed.


Thomas Petzoldt


PS: A minimal reproducible example (foo_1.0.tar.gz) can be provided by 
mail if required.


--
Thomas Petzoldt
Technische Universitaet Dresden
Institut fuer Hydrobiologiethomas.petzo...@tu-dresden.de
01062 Dresden  http://tu-dresden.de/hydrobiologie/
GERMANY

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Re: [Rd] linking to package directories broken in R = 2.10 beta

2009-10-17 Thread Duncan Murdoch

Thomas Petzoldt wrote:

Dear R developers,

some of our packages come with additional programming examples in a 
directory called /examples which is created from /inst/examples.


This directory is linked from the docs (e.g. in inst/doc/index.html):

dl
dta href=../examples/examples/a:
ddSource code of examples
/dl

Given, that we have a package foo this is resolved to:

file:///C:/Programme/R/R-2.9.2/library/foo/examples/

with R = 2.9.2. With R 2.10 beta (R-beta_2009-10-16_r50118.tar.gz) and 
R-devel (svn rev. 50118) we get:


http://127.0.0.1:26383/library/foo/examples/

This is fine, but in contrast to older versions (= 2.9.2) no automatic 
index is created for the linked directory, so we now get:


URL /library/foo/examples/ was not found

bu linking to *individual files* (e.g. examples/example.R) works as 
expected. We can, of course, add manually maintained index files but I 
would much prefer if a default index would be created for the directory 
if no index.html is found.
  


By index in R = 2.9.2, you mean the default directory listing 
produced by the web server, rather than something produced by R, right?  
The R server does that now if the directory is named doc, but not for 
an arbitrary path.  We are concerned about security:  any user on your 
system who can guess your port number can access your help system, so we 
want to be sure that such users can't access private files.


Duncan Murdoch
I very much enjoy the new help system and would be even more happy if 
that issue could be fixed.


Thomas Petzoldt


PS: A minimal reproducible example (foo_1.0.tar.gz) can be provided by 
mail if required.





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Re: [Rd] linking to package directories broken in R = 2.10 beta

2009-10-17 Thread Thomas Petzoldt

Duncan Murdoch wrote:

Thomas Petzoldt wrote:


[...]

This is fine, but in contrast to older versions (= 2.9.2) no 
automatic index is created for the linked directory, so we now get:



URL /library/foo/examples/ was not found

but linking to *individual files* (e.g. examples/example.R) works as
expected. We can, of course, add manually maintained index files
but I would much prefer if a default index would be created for the
directory if no index.html is found.



By index in R = 2.9.2, you mean the default directory listing 
produced by the web server, rather than something produced by R, 
right?


Yes, I mean the default directory listing produced by (most) web servers.

The R server does that now if the directory is named doc, but not 
for an arbitrary path. We are concerned about security: any user on 
your system who can guess your port number can access your help 
system, so we want to be sure that such users can't access private 
files.



Hmm, I see and have some tendency to understand that this may be an 
issue for certain multi-user systems. Looking into the svn log (and 
compiling R) it appears that the remaining possibilities where also 
regarded as security issue and are now locked down too.


Well, I'm not yet completely convinced that this was a good idea.

1) It does not completely solve security issues; what is so different
between the library/foo/doc and library/foo/examples ???

2) The change will introduce additional work for package authors
that used internal links within their packages. I can, of course,
reorganize everything below doc, e.g. /library/foo/doc/examples ... but
this means that these things are even more hidden.

3) However, according to the changed R-Exts, it was obviously decided
that this was necessary, so *I* will do the required reorganization.

I hope that other package authors accept this change of the rules too.

Nevertheless, thank you very much for the new help system.

Thomas P.

__
R-devel@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-devel