openssh unix dev - Nov 2007 - problem with sftp & huawei switches

hello,

I have the problem with sftp, I can't read files and dirs from huawei
switches. I see:


mm:/home/milon# sftp 10.1.1.30:vrpcfg.cfg .
Connecting to 10.1.1.30...
root at 10.1.1.30's password: 
Couldn't stat remote file: Operation unsupported
File "flash:/flash:/vrpcfg.cfg" not found.
Received disconnect from 10.1.1.30: 2: The connection is closed by
SSH Server
Current FSM is SSH_Main_Disconnect


Or interactive session:

sftp> ls
Couldn't stat remote file: Operation unsupported
Can't ls: "flash:/" not found
sftp> cd /
Couldn't stat remote file: Operation unsupported
sftp> get vrpcfg.cfg
Couldn't stat remote file: Operation unsupported
File "flash:/vrpcfg.cfg" not found.


Hovewer mkdir, rmdir, put and rm operations are working.
Winscp program is working too.

Any suggestions ? Or workaround ?

openssh version 4.6p1, switch huawei quidway 5600; reading file of course
exists

Thanks for any reply. (Please cc)

regards,

-- 
Milan Kocian

On Sun, Nov 04, 2007 at 01:39:29PM +0100, Milan Kocian
wrote:
> Or interactive session:
> 
> sftp> ls
> Couldn't stat remote file: Operation unsupported
> Can't ls: "flash:/" not found
Does the pwd command work?


//Peter

(resend, my previous reply was from a non-subscribed address)

On Nov 4, 2007 4:39 AM, Milan Kocian <milon at wq.cz>
wrote:
> I have the problem with sftp, I can't read files and dirs from huawei
> switches. I see:
>
> mm:/home/milon# sftp 10.1.1.30:vrpcfg.cfg .
> Connecting to 10.1.1.30...
> root at 10.1.1.30's password:
> Couldn't stat remote file: Operation unsupported
> File "flash:/flash:/vrpcfg.cfg" not found.
> Received disconnect from 10.1.1.30: 2: The connection is closed by
> SSH Server
> Current FSM is SSH_Main_Disconnect
Looks like your switch doesn't support the stat() operation, which
sftp(1) uses before the download and will abort the download if the
stat fails.

You can try this patch, which is against OpenBSD's -current but should
apply to 4.7 and 4.6 as well (and yeah, I know "goto" is bad, this is
the minimum change to test the theory.)

-- 
Darren Tucker (dtucker at zip.com.au)
GPG key 8FF4FA69 / D9A3 86E9 7EEE AF4B B2D4  37C9 C982 80C7 8FF4 FA69
    Good judgement comes with experience. Unfortunately, the experience
usually comes from bad judgement.

On Sun, Nov 04, 2007 at 10:44:54AM -0800, Darren Tucker
wrote:
> You can try this patch
..no patch. Please resend it for the archive.


//Peter

On Sun, Nov 04, 2007 at 09:49:55AM -0700, Darren Tucker wrote:
 
> Looks like your switch doesn't support the stat() operation, which
> sftp(1) uses before the download and will abort the download if the
> stat fails.
probably yes.
> 
> You can try this patch, which is against OpenBSD's -current but should
> apply to 4.7 and 4.6 as well (and yeah, I know "goto" is bad,
this is
> the minimum change to test the theory.)
> 
I tested it but the patch has no effect. (openssh version 4.6p1).

regards,

-- 
Milan Kocian

On Sun, Nov 04, 2007 at 09:49:55AM -0700, Darren Tucker
wrote:
> [...]
> 
> Looks like your switch doesn't support the stat() operation, which
> sftp(1) uses before the download and will abort the download if the
> stat fails.
> 
> You can try this patch, which is against OpenBSD's -current but should
> apply to 4.7 and 4.6 as well (and yeah, I know "goto" is bad,
this is
> the minimum change to test the theory.)
> 
Hello again,

I tried to look at this in more detail. And here is ugly patch that
works for me (in combination with yours).

Here is log from sesssion:

sftp> ls
sftp> ls *
aaa 				hw-http3.1.5-0043.web		hw-http3.1.5-0049.web                    
s5600-vrp310-r1510p06.bin	s5600-vrp310-r1510p12.bin	s5600_v408.btm
vrpcfg.cfg			vrpcfg.def                               
sftp> get vrpcfg.cfg
Fetching flash:/vrpcfg.cfg to vrpcfg.cfg
Couldn't stat remote file: Operation unsupported
flash:/vrpcfg.cfg
0% 2554     2.5KB/s 14948:06:54
sftp> 

So it seems to problem in glob. BTW. sftp client has a problem with names
that contain spaces.

--- openssh-4.3p2/openbsd-compat/glob.c	2005-11-10 07:02:22.000000000 +0100
+++ openssh-4.3p2.new/openbsd-compat/glob.c	2007-11-08 10:20:07.991115714 +0100
@@ -521,8 +521,8 @@
 	for (anymeta = 0;;) {
 		if (*pattern == EOS) {		/* End of pattern? */
 			*pathend = EOS;
-			if (g_lstat(pathbuf, &sb, pglob))
-				return(0);
+			//if (g_lstat(pathbuf, &sb, pglob))
+			//	return(0);
 
 			if (((pglob->gl_flags & GLOB_MARK) &&
 			    pathend[-1] != SEP) && (S_ISDIR(sb.st_mode) ||


Regards,

-- 
Milan Kocian