RE: Case sensitivity on sftp servers

[Richard Whalen <Whalenr%process.com@localhost>]

I think that this will work.

-----Original Message-----
From: Joseph Galbraith [mailto:galb-list%vandyke.com@localhost]
Sent: Friday, September 05, 2003 4:38 PM
To: Richard Whalen
Cc: 'Joseph Galbraith'; ietf-ssh%NetBSD.org@localhost
Subject: Re: Case sensitivity on sftp servers


> Though I agree that specifying case sensitivity may be useful, I think
that
> specifying it on a server wide basis is too broad.
> 
> The server may offer several file systems and some of these may not
preserve
> case, while others may preserve case but not be case sensitive, and still
> other may preserve case and be case sensitive.
> 
> The server may also have the option of allowing the client to specify
> whether or not file operations are case sensitive on a file system that
> preserves case.
> 
> It may be necessary to specify a method of obtaining the file systems
> available and their characteristics (Read Only, Case Preserving, Case
> Sensitive, etc.)

You raise a good point--- hmmm... let's try this on
for size:

new attrib bit:

SSH_FILEXFER_ATTR_FILESYSTEM
	string filesystem-name

SSH_FILEXFER_ATTR_FILESYSTEM is only sent by the server
if the client requested it by including in the flags
mask during readdir or stat operation and the file
in question is a directory.

filesystem-name is a handle that can be passed back
to the server using the "read-filesystem-attributes"
It need not be human readable.

-- 
byte   SSH_FXP_EXTENDED
uint32 request-id
string "read-filesystem-attributes"
string filesystem-name

byte SSH_FXP_EXTENDED_REPLY
uint32 request-id
uint32 file-system attribute flags
	CASE_SENSITIVE
	CASE_PRESERVITIVE
	CASE_OPTIONAL
string-utf8 invalid-chars
uint32 reserved-name-count
string reserved-name[1..reserved-name-count]

And, a new flag bit in in the modes during open to
specify that the filename should be case sensitive
or case insensitive.  If the server can't comply,
it return OP_UNSUPPORTED.

What do you think?

I think I keep the "default-file-attributes" and then
the filesystem only need be sent if it is different from
the default.

- Joseph