Sftp ошибка 31

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link
————————————-+————————————-
Reporter: pingu | Type: defect
Status: new | Priority: minor
Milestone: Future Releases | Component: mc-vfs
Version: master | Keywords: -31 sftp
Blocked By: | error chiper
Branch state: no branch | Blocking:
| Votes for changeset:
————————————-+————————————-
GNU Midnight Commander 4.8.13
Built with GLib 2.42.1
Using the S-Lang library with terminfo database
With builtin Editor
With subshell support as default
With support for background operations
With mouse support on xterm and Linux console
With support for X11 events
With internationalization support
With multiple codepages support
Virtual File Systems: cpiofs, tarfs, sfs, extfs, ext2undelfs, ftpfs,
sftpfs, fish
Data types: char: 8; int: 32; long: 32; void *: 32; size_t: 32; off_t: 64;
———————————————————————————-
Package: libssh2-1
Source: libssh2
Version: 1.4.3-4
———————————————————————————-
Local version string SSH-2.0-OpenSSH_6.7p1 Debian-3
Remote protocol version 2.0, remote software version dropbear_0.52
———————————————————————————-

Seems that after OpenSSH Server update after infamous Heartblead bug, Im
allways getting these errors when copying / moving files within SFTP built
in mc:

COPY/MOVE FILE TO REMOTE: «-31: SFTP Protocol Error»
REMOVE REMOTE FILE/DIR: «-31: Failed opening remote file»

Although after I press ENTER — operation continues successfully, however
when transfering lots of selected files I have to acknowledge (press
ENTER) on every file operation, so batch copy / move / remove operations
are inefficient.

Doing verbose CLI sftp connection to the same server, succeeds without
errors.
Also to note that to speed up transfers in ssh config file I prioritised
blowfish protocol, what is honoured by sftp transfers, but NOT with mc
sftp, as with sftp CLI (specifying blowfish) I get allmost twice the
speed, but mc sftp transfer speeds are similar to the ones when I force
AES encryption on CLI sftp.

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406>
Midnight Commander <http://www.midnight-commander.org>
Midnight Development Center

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link

—————————+———————————————
Reporter: pingu | Owner:

Type: defect | Status: new
Priority: minor | Milestone: Future Releases
Component: mc-vfs | Version: master

Resolution: | Keywords: -31 sftp error chiper
Blocked By: | Blocking:
Branch state: no branch | Votes for changeset:
—————————+———————————————
Changes (by ginggs):

* cc: graham@… (added)

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:1>

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link

—————————+———————————————
Reporter: pingu | Owner:

Type: defect | Status: new
Priority: minor | Milestone: Future Releases
Component: mc-vfs | Version: master

Resolution: | Keywords: -31 sftp error chiper
Blocked By: | Blocking:
Branch state: no branch | Votes for changeset:
—————————+———————————————

Comment (by jkeil):

I did a git bisect and came across
`512ad7d96250ea5a2ab2197e0b8a02af29d419d1` which was a re-factoring of the
error handling.
Previously (`512ad7d96250ea5a2ab2197e0b8a02af29d419d1^`) the error would
just be swallowed. Now, after the re-factoring it is properly propagated
and displayed.

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:2>

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link

—————————+———————————————
Reporter: pingu | Owner:

Type: defect | Status: new
Priority: minor | Milestone: Future Releases
Component: mc-vfs | Version: master

Resolution: | Keywords: -31 sftp error chiper
Blocked By: | Blocking:
Branch state: no branch | Votes for changeset:
—————————+———————————————

Comment (by and):

«-31: SFTP Protocol Error» message can be triggered when entering a remote
directory with a symlink pointed to file which located at non readable
directory.

/testfile -> /non-accessible-directory/testfile

mc use libssh2_sftp_stat_ex with LIBSSH2_SFTP_LSTAT type, remote lstat()
failed
and currently mc not handled this event correctly.

first we need to pimp up sftpfs_ssherror_to_gliberror() to get knowledge
about calling libssh2 function and libssh2_sftp_last_error() error code
when LIBSSH2_ERROR_SFTP_PROTOCOL (aka -31) occurs.

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:3>

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link

—————————+———————————————
Reporter: pingu | Owner:

Type: defect | Status: new
Priority: minor | Milestone: Future Releases
Component: mc-vfs | Version: master

Resolution: | Keywords: -31 sftp error chiper
Blocked By: | Blocking:
Branch state: no branch | Votes for changeset:
—————————+———————————————

Comment (by and):

first patch incorporate sftp session error hint

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:4>

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link

—————————+———————————————
Reporter: pingu | Owner:

Type: defect | Status: new
Priority: minor | Milestone: Future Releases
Component: mc-vfs | Version: master

Resolution: | Keywords: -31 sftp error chiper
Blocked By: | Blocking:
Branch state: no branch | Votes for changeset:
—————————+———————————————

Comment (by drankinatty):

Just wanted to bump this ticket to say this is still a problem in:
Version : 4.8.18-1
Build Date : Fri 07 Oct 2016 10:34:16 AM CDT (Archlinux)

Upon sftp to remote site, copying file from remote back to originating
machine, the following error is displayed:

«Failed opening remote file (-31)»

Upon acknowledging the error by hitting return, the copy completes
successfully despite the error.

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:5>

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link

—————————+———————————————
Reporter: pingu | Owner:

Type: defect | Status: new
Priority: minor | Milestone: Future Releases
Component: mc-vfs | Version: master

Resolution: | Keywords: -31 sftp error chiper
Blocked By: | Blocking:
Branch state: no branch | Votes for changeset:
—————————+———————————————

Comment (by sand):

Any progress?

The version in debian/sid also segv after a while (3:4.8.18-1).

I’m trying to copy a bunch of files over a raspbian/jessie, the path I’m
copying into doesn’t have any symlink and any user can read and traverse
every directory of the destination path.

I tried mc from sources (4.8.18-163-g67b3d6495/glib:2.50.2) without and
with both the patches above, it doesn’t segv but the error -31 is still
present.

Ignoring the error I’ve copied about 5600 files (49M) without errors (md5
checked), now if I try to overwrite just one it segv, the terminal show a
ridiculous alloc failed in glib/gmem.c

{{{
(mc:31619): GLib-ERROR **:
/build/glib2.0-m2w47E/glib2.0-2.50.2/./glib/gmem.c:100: failed to allocate
94337158982256 bytes
}}}

{{{
0x00007f52702f6261 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
(gdb) bt
#0 0x00007f52702f6261 in ?? () from /lib/x86_64-linux-
gnu/libglib-2.0.so.0
#1 0x00007f52702f72b7 in g_log_default_handler () from /lib/x86_64-linux-
gnu/libglib-2.0.so.0
#2 0x00007f52702f75c4 in g_logv () from /lib/x86_64-linux-
gnu/libglib-2.0.so.0
#3 0x00007f52702f77cf in g_log () from /lib/x86_64-linux-
gnu/libglib-2.0.so.0
#4 0x00007f52702f5e34 in g_malloc () from /lib/x86_64-linux-
gnu/libglib-2.0.so.0
#5 0x0000559568856781 in copy_file_file (tctx=tctx@entry=0x55956a836730,
ctx=ctx@entry=0x55956a8367c0,
src_path=0x55956a8366e0 «/home/alex/tmp/yii2-basic/basic/.gitignore»,
dst_path=dst_path@entry=0x55956a810e70
«/sftp://pi@firefly/var/www/vhosts/yii2bm/.gitignore») at
../../../src/filemanager/file.c:1808
#6 0x0000559568859338 in panel_operate (source_panel=0x55956a80f760,
operation=operation@entry=OP_COPY, force_single=force_single@entry=0)
at ../../../src/filemanager/file.c:2909
#7 0x0000559568850c3c in copy_cmd () at
../../../src/filemanager/cmd.c:802
#8 0x00005595687f7425 in midnight_execute_cmd (sender=0x55956a81e800,
command=22) at ../../../src/filemanager/midnight.c:1142
#9 0x00005595687dc0f0 in buttonbar_callback (w=0x55956a81e800,
sender=<optimized out>, msg=<optimized out>, parm=<optimized out>,
data=<optimized out>) at ../../../lib/widget/buttonbar.c:171
#10 0x00005595687e047a in send_message (data=0x0, parm=1005,
msg=MSG_HOTKEY, sender=0x0, w=<optimized out>)
at ../../../lib/widget/widget-common.h:210
#11 dlg_try_hotkey (h=0x55956a819a10, h=0x55956a819a10, d_key=1005) at
../../../lib/widget/dialog.c:434
#12 dlg_key_event (d_key=1005, h=0x55956a819a10) at
../../../lib/widget/dialog.c:479
#13 dlg_process_event (h=0x55956a819a10, key=1005, event=<optimized out>)
at ../../../lib/widget/dialog.c:1165
#14 0x00005595687e07d0 in frontend_dlg_run (h=0x55956a819a10) at
../../../lib/widget/dialog.c:541
#15 dlg_run (h=0x55956a819a10) at ../../../lib/widget/dialog.c:1196
#16 0x00005595687f8686 in create_panels_and_run_mc () at
../../../src/filemanager/midnight.c:954
#17 do_nc () at ../../../src/filemanager/midnight.c:1770
#18 0x00005595687d4e9e in main (argc=<optimized out>, argv=<optimized
out>) at ../../src/main.c:407
}}}

(I’m not sure this is the same issue)

Please let me know if I can help in some way (trying patches)

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:6>

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link

—————————+———————————————
Reporter: pingu | Owner:

Type: defect | Status: new
Priority: minor | Milestone: Future Releases
Component: mc-vfs | Version: master

Resolution: | Keywords: -31 sftp error chiper
Blocked By: | Blocking:
Branch state: no branch | Votes for changeset:
—————————+———————————————

Comment (by zaytsev):

From looking at the code, it seems that the segfault is a regression
caused by

18f6b850054ab0b12a17f786191d345a1742cb48

and I think that the reason why it segfaults now is is because
`sftpfs_{l,f}stat` functions do not set `st_blksize` stuff.

Here is an untested patch which should remove the segfault if my guess is
correct:

{{{
diff —git a/src/vfs/sftpfs/internal.c b/src/vfs/sftpfs/internal.c
index 5377b66..2301ad5 100644
— a/src/vfs/sftpfs/internal.c
+++ b/src/vfs/sftpfs/internal.c
@@ -30,6 +30,8 @@
#include «lib/global.h»
#include «lib/util.h»

+#include «src/filemanager/ioblksize.h» /* IO_BUFSIZE */
+
#include «internal.h»

/*** global variables
****************************************************************************/
@@ -193,6 +195,9 @@ sftpfs_lstat (const vfs_path_t * vpath, struct stat
*buf, GError ** mcerror)
if ((attrs.flags & LIBSSH2_SFTP_ATTR_PERMISSIONS) != 0)
buf->st_mode = attrs.permissions;

+ buf->st_blksize = IO_BUFSIZE;
+ buf->st_blocks = 1 + ((buf->st_size — 1) / buf->st_blksize);
+
return 0;
}

@@ -272,6 +277,9 @@ sftpfs_stat (const vfs_path_t * vpath, struct stat
*buf, GError ** mcerror)
if ((attrs.flags & LIBSSH2_SFTP_ATTR_PERMISSIONS) != 0)
buf->st_mode = attrs.permissions;

+ buf->st_blksize = IO_BUFSIZE;
+ buf->st_blocks = 1 + ((buf->st_size — 1) / buf->st_blksize);
+
return 0;
}

}}}

I hope it does compile.

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:7>

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link

—————————+———————————————
Reporter: pingu | Owner:

Type: defect | Status: new
Priority: minor | Milestone: Future Releases
Component: mc-vfs | Version: master

Resolution: | Keywords: -31 sftp error chiper
Blocked By: | Blocking:
Branch state: no branch | Votes for changeset:
—————————+———————————————

Comment (by sand):

Thanks zaytsev, sorry for the delay didn’t get any mail, it does compile
and it does fix the overwrite segv!

About the error -31, I see «protocol error» 2 and 4, usually start with 2
then alternate with some 4 (2 and 4 should be «err»).

If there’s anything else I can do just let me know (strace? ltrace?
enable/insert some trace in mc/ssl? enable debug on server side?)

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:8>

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link

—————————+———————————————
Reporter: pingu | Owner:

Type: defect | Status: new
Priority: minor | Milestone: Future Releases
Component: mc-vfs | Version: master

Resolution: | Keywords: -31 sftp error chiper
Blocked By: | Blocking:
Branch state: no branch | Votes for changeset:
—————————+———————————————

Comment (by zaytsev):

I’ve created a new ticket for the segfault: #3749 .

Re. error -31, sorry, I don’t even use sftp and I don’t know if and when I
will get time to look into it if at all. Too bad and’s patches apparently
aren’t enough to fix the problem :-/

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:9>

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link

—————————+———————————————
Reporter: pingu | Owner:

Type: defect | Status: new
Priority: minor | Milestone: Future Releases
Component: mc-vfs | Version: master

Resolution: | Keywords: -31 sftp error chiper
Blocked By: | Blocking:
Branch state: no branch | Votes for changeset:
—————————+———————————————

Comment (by sand):

I’m not very confident with ssl and this is the first time I see mc
sources but, a breakpoint on the error message show bt like this:

{{{
#0 sftpfs_ssherror_to_gliberror
(super_data=super_data@entry=0x55a4a0fdf510, libssh_errno=-31,
mcerror=mcerror@entry=0x7ffc38fdaac8)
at ../../../../src/vfs/sftpfs/internal.c:63
#1 0x000055a4a062ec9e in sftpfs_stat (vpath=<optimized out>,
buf=0x7ffc38fdac90, mcerror=mcerror@entry=0x7ffc38fdaac8)
at ../../../../src/vfs/sftpfs/internal.c:265
#2 0x000055a4a06222bc in sftpfs_cb_stat (vpath=<optimized out>,
buf=<optimized out>) at ../../../../src/vfs/sftpfs/vfs_class.c:277
#3 0x000055a4a05ae4d9 in mc_stat (vpath=vpath@entry=0x55a4a0fb7910,
buf=buf@entry=0x7ffc38fdac90) at ../../../lib/vfs/interface.c:571
#4 0x000055a4a0615b30 in copy_file_file (tctx=tctx@entry=0x55a4a0fdf000,
ctx=ctx@entry=0x55a4a0fdb600,

}}}

If I understand correctly the error is raised within
{{{internal.c:sftpfs_stat()}}} by {{{libssh2_sftp_stat_ex}}}

{{{
res =
libssh2_sftp_stat_ex (super_data->sftp_session,
fixfname, sftpfs_filename_buffer->len,
LIBSSH2_SFTP_STAT, &attrs);
if (res >= 0)
break;

if (res == LIBSSH2_ERROR_SFTP_PROTOCOL &&
libssh2_sftp_last_error(super_data->sftp_session) ==
LIBSSH2_FX_PERMISSION_DENIED)
return EACCES;

if (res != LIBSSH2_ERROR_EAGAIN)
{
sftpfs_ssherror_to_gliberror (super_data, res, mcerror);
return -1;
}
}}}

{{{libssh2_sftp_stat_ex}}} return unexpected/unhandled -2 and -4
({{{res}}} is shown as {{{err}}}), which in my
{{{/usr/include/libssh2.h}}} are:
{{{
#define LIBSSH2_ERROR_BANNER_RECV -2
#define LIBSSH2_ERROR_INVALID_MAC -4
}}}

But I don’t know ssl enough to understand what is wrong, maybe it require
some option to ignore certificates like wget?

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:10>

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link

—————————+———————————————
Reporter: pingu | Owner:

Type: defect | Status: new
Priority: minor | Milestone: Future Releases
Component: mc-vfs | Version: master

Resolution: | Keywords: -31 sftp error chiper
Blocked By: | Blocking:
Branch state: no branch | Votes for changeset:
—————————+———————————————

Comment (by zaytsev):

I’m not sure you are looking at the right errors. You should put a break
on `sftpfs_ssherror_to_gliberror` and check the values of `res` »and»
`libssh2_sftp_last_error(super_data->sftp_session)`.

You said earlier that you get a message that `res == -31`, so this can’t
be caused by `res == -2 or -4`. To decode protocol errors you need to look
at the `LIBSSH2_FX_*` constants.

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:11>

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link

—————————+———————————————
Reporter: pingu | Owner:

Type: defect | Status: new
Priority: minor | Milestone: Future Releases
Component: mc-vfs | Version: master

Resolution: | Keywords: -31 sftp error chiper
Blocked By: | Blocking:
Branch state: no branch | Votes for changeset:
—————————+———————————————

Comment (by sand):

Sorry, I got the error thing a bit wrong.

{{{libssh2_sftp_stat_ex()}}} is a two line function which call
{{{sftp_stat()}}}, this may exit with error -31 (ftp), 2 and 4 are errors
from the server.

{{{
if (data[0] == SSH_FXP_STATUS) {
int retcode;

retcode = _libssh2_ntohu32(data + 5);
LIBSSH2_FREE(session, data);
if (retcode == LIBSSH2_FX_OK) {
return 0;
} else {
sftp->last_errno = retcode;
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
«SFTP Protocol Error»);
}
}
}}}

I tried to enable-debug in libssh2 in order to get {{{ssh2_strace()}}}
working but got into more trouble, time to give up yet, maybe I’ll try
later with pbuilder.

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:12>

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link

—————————+———————————————
Reporter: pingu | Owner:

Type: defect | Status: new
Priority: minor | Milestone: Future Releases
Component: mc-vfs | Version: master

Resolution: | Keywords: -31 sftp error chiper
Blocked By: | Blocking:
Branch state: no branch | Votes for changeset:
—————————+———————————————

Comment (by zaytsev):

In as far as `LIBSSH2_FX_NO_SUCH_FILE` is concerned, I think the reason
why this happens is that the copy function tries to stat destination file
to make sure it’s not overwriting anything, but the stat function shows
protocol error, instead of correctly propagating the status.

Untested patch to check this assumption:

{{{
diff —git a/src/vfs/sftpfs/internal.c b/src/vfs/sftpfs/internal.c
index 5377b66..4d388fe 100644
— a/src/vfs/sftpfs/internal.c
+++ b/src/vfs/sftpfs/internal.c
@@ -241,6 +241,10 @@ sftpfs_stat (const vfs_path_t * vpath, struct stat
*buf, GError ** mcerror)

+ if (res == LIBSSH2_ERROR_SFTP_PROTOCOL &&
+ libssh2_sftp_last_error(super_data->sftp_session) ==
LIBSSH2_FX_NO_SUCH_FILE)
+ return ENOENT;
+

if (res != LIBSSH2_ERROR_EAGAIN)
{
sftpfs_ssherror_to_gliberror (super_data, res, mcerror);
}}}

To find out why `LIBSSH2_FX_FAILURE` happens try to find out how to
reliably reproduce it and pay attention to call arguments while debugging.

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:13>

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link

—————————+———————————————
Reporter: pingu | Owner:

Type: defect | Status: new
Priority: minor | Milestone: Future Releases
Component: mc-vfs | Version: master

Resolution: | Keywords: -31 sftp error chiper
Blocked By: | Blocking:
Branch state: no branch | Votes for changeset:
—————————+———————————————

Comment (by sand):

I must have too much changes, the patch applied but in the wrong function.

There are 4 call to {{{libssh2_sftp_stat_ex}}} in {{{internal.c}}} but
you’re right the only one failing is in {{{sftpfs_stat}}}, and with your
patch -31:2 is gone.

Let see if a backtrace for the -31:4 can help.

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:14>

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link

—————————+———————————————
Reporter: pingu | Owner:

Type: defect | Status: new
Priority: minor | Milestone: Future Releases
Component: mc-vfs | Version: master

Resolution: | Keywords: -31 sftp error chiper
Blocked By: | Blocking:
Branch state: no branch | Votes for changeset:
—————————+———————————————

Comment (by sand):

I tried some copy and every backtrace looks almost the same, the failure
seems to be from {{{sftpfs_chmod()}}} (on created directory maybe?)

{{{
#0 sftpfs_ssherror_to_gliberror
(super_data=super_data@entry=0x55765957cb20,
libssh_errno=libssh_errno@entry=-31,
mcerror=mcerror@entry=0x7ffef466c9e8) at
../../../../src/vfs/sftpfs/internal.c:63
#1 0x000055765764b2fd in sftpfs_chmod (vpath=<optimized out>, mode=16877,
mcerror=mcerror@entry=0x7ffef466c9e8)
at ../../../../src/vfs/sftpfs/internal.c:538
#2 0x000055765763e1fc in sftpfs_cb_chmod (vpath=<optimized out>,
mode=<optimized out>) at ../../../../src/vfs/sftpfs/vfs_class.c:518
#3 0x00005576575c95a0 in mc_chmod (vpath=vpath@entry=0x557659555750,
mode=16877) at ../../../lib/vfs/interface.c:252
#4 0x0000557657633479 in copy_dir_dir (tctx=tctx@entry=0x557659561b80,
ctx=ctx@entry=0x55765958f500,
s=0x557659555820 «/home/alex/tmp/yii2-basic/basic/assets»,
d=<optimized out>,
d@entry=0x5576595808e0
«/sftp://pi@firefly/var/www/vhosts/yii2bm/assets»,
toplevel=toplevel@entry=1, move_over=move_over@entry=0, do_delete=0,
parent_dirs=0x55765954a240) at ../../../src/filemanager/file.c:2275
#5 0x000055765763544f in panel_operate (source_panel=0x557659555930,
operation=operation@entry=OP_COPY, force_single=force_single@entry=0)
at ../../../src/filemanager/file.c:2905
#6 0x000055765762ccbc in copy_cmd () at
../../../src/filemanager/cmd.c:802
#7 0x00005576575d34a5 in midnight_execute_cmd (sender=0x557659557410,
command=22) at ../../../src/filemanager/midnight.c:1142
#8 0x00005576575b8170 in buttonbar_callback (w=0x557659557410,

sender=<optimized out>, msg=<optimized out>, parm=<optimized out>,
data=<optimized out>) at ../../../lib/widget/buttonbar.c:171

#9 0x00005576575bc4fa in send_message (data=0x0, parm=1005,

msg=MSG_HOTKEY, sender=0x0, w=<optimized out>)
at ../../../lib/widget/widget-common.h:210

#10 dlg_try_hotkey (h=0x557659552490, h=0x557659552490, d_key=1005) at
../../../lib/widget/dialog.c:434
#11 dlg_key_event (d_key=1005, h=0x557659552490) at
../../../lib/widget/dialog.c:479
#12 dlg_process_event (h=0x557659552490, key=1005, event=<optimized out>)
at ../../../lib/widget/dialog.c:1165
#13 0x00005576575bc850 in frontend_dlg_run (h=0x557659552490) at
../../../lib/widget/dialog.c:541
#14 dlg_run (h=0x557659552490) at ../../../lib/widget/dialog.c:1196
#15 0x00005576575d4706 in create_panels_and_run_mc () at
../../../src/filemanager/midnight.c:954
#16 do_nc () at ../../../src/filemanager/midnight.c:1770
#17 0x00005576575b0f1e in main (argc=<optimized out>, argv=<optimized

out>) at ../../src/main.c:407
}}}

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:15>

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link

—————————+———————————————
Reporter: pingu | Owner:

Type: defect | Status: new
Priority: minor | Milestone: Future Releases
Component: mc-vfs | Version: master

Resolution: | Keywords: -31 sftp error chiper
Blocked By: | Blocking:
Branch state: no branch | Votes for changeset:
—————————+———————————————

Comment (by zaytsev):

> There are 4 call to libssh2_sftp_stat_ex in internal.c but you’re right

the only one failing is in sftpfs_stat, and with your patch -31:2 is gone.

Yes, this is absolutely disgusting copy & paste programming, how about
properly rewriting all this stuff and covering it with tests? ;-P

> I tried some copy and every backtrace looks almost the same, the failure
seems to be from sftpfs_chmod() (on created directory maybe?)

Probably changing the permissions fails, and this error is not suppressed.
Try (untested) patch:

{{{
diff —git a/src/vfs/sftpfs/internal.c b/src/vfs/sftpfs/internal.c
index 5377b66..2bdec11 100644
— a/src/vfs/sftpfs/internal.c
+++ b/src/vfs/sftpfs/internal.c
@@ -470,7 +470,15 @@ sftpfs_chmod (const vfs_path_t * vpath, mode_t mode,
GError ** mcerror)
sftpfs_filename_buffer->len,
LIBSSH2_SFTP_SETSTAT, &attrs);

— else if (res != LIBSSH2_ERROR_EAGAIN)
+

+ if (res == LIBSSH2_ERROR_SFTP_PROTOCOL &&
+ libssh2_sftp_last_error(super_data->sftp_session) ==

LIBSSH2_FX_FAILURE)
+ {
+ res = 0; /* need something like ftpfs_ignore_chattr_errors
*/
+ break;
+ }
+

+ if (res != LIBSSH2_ERROR_EAGAIN)
{
sftpfs_ssherror_to_gliberror (super_data, res, mcerror);

return -1;
}}}

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:16>

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link

—————————+———————————————
Reporter: pingu | Owner:

Type: defect | Status: new
Priority: minor | Milestone: Future Releases
Component: mc-vfs | Version: master

Resolution: | Keywords: -31 sftp error chiper
Blocked By: | Blocking:
Branch state: no branch | Votes for changeset:
—————————+———————————————

Comment (by sand):

Thump up! -31:4 gone too

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:17>

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link

—————————+———————————————
Reporter: pingu | Owner:

Type: defect | Status: new
Priority: minor | Milestone: Future Releases
Component: mc-vfs | Version: master

Resolution: | Keywords: -31 sftp error chiper
Blocked By: | Blocking:
Branch state: no branch | Votes for changeset:
—————————+———————————————

Comment (by zaytsev):

> I’m not 100% sure, I don’t think is about permissions, the user
connecting via sftp own the target directory with full perms +rwx.

Could be UID / GID mismatch though…

> I can take a look (or wasn’t for me?) but not this year

It was for anyone potentially willing to take a look, including you. The
plan would be:

0. Merge Andrew’s fix for segfault
1. Clean up the copy & paste WTF
2. Rebase patches by @and
3. Clean up my patches
a. As you noted, I only patched functions that caused trouble in your
particular case, others are still problematic, but maybe after eliminating
copy & paste it will be straightforward.
b. Think about a better solution for ignoring chattr errors; maybe
introduce a generic option that will be valid for both ftpfs, sftpfs and
whatever other VFSes? Needs input, e.g. from Andrew.
4. Add unit tests where possible

> There’s some automated test or are you talking about the old fashion?

We have some unit tests implemented with the check framework.

> Thanks a lot for the support! I’m gonna stress sftp a bit in the next
days with some daily work.

I’m glad we finally identified the reason behind these annoying -31
errors. Thanks for your help as well, hopefully someone will manage to
clean up this mess. Happy New Year to you too!

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:18>

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link

—————————+———————————————
Reporter: pingu | Owner:

Type: defect | Status: new
Priority: minor | Milestone: Future Releases
Component: mc-vfs | Version: master

Resolution: | Keywords: -31 sftp error chiper
Blocked By: | Blocking:
Branch state: no branch | Votes for changeset:
—————————+———————————————

Comment (by sand):

@zaytsev, challenge accepted

I took some time this evening, please see the attached {{{internal.c}}},
I’ve identified some pattern in the copy&paste code an tried to normalize
it, beside the names of added functions/type/macro… let me know what you
think about.

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:19>

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link

—————————+———————————————
Reporter: pingu | Owner:

Type: defect | Status: new
Priority: minor | Milestone: Future Releases
Component: mc-vfs | Version: master

Resolution: | Keywords: -31 sftp error chiper
Blocked By: | Blocking:
Branch state: no branch | Votes for changeset:
—————————+———————————————

Comment (by zaytsev):

Thank you for your help, however, the attached file is of little use for
us. Please commit your changes as separate patches and attach those to the
ticket. We have a few wiki pages which explain how to work with git:
GitGuideLines / WorkingGuideLines — patches from your local branch can be
produced with `git format-patch` command. Regarding tests, all we have is
in the `tests` directory. See the `README` file there. In as far as
ciphers are concerned, sorry, I’ve got no clue; it would be awesome if
sftp respected the `ssh_config` file, but I don’t know if there are any
facilities in the library you can make use of to that end.

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:20>

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link

—————————+———————————————
Reporter: pingu | Owner:

Type: defect | Status: new
Priority: minor | Milestone: Future Releases
Component: mc-vfs | Version: master

Resolution: | Keywords: -31 sftp error chiper
Blocked By: | Blocking:
Branch state: no branch | Votes for changeset:
—————————+———————————————

Comment (by sand):

@zaytsev, before any »official» patch I’d like to know if the changes I
did are aligned with your idea of cleanup, and eventually I’d really like
suggestions/help naming the new functions/macro.

attached a patch, but is only for review (last commit of {{{internal.c}}}
was {{{471ea781cacda6ddf324c614e2cf915d59325375}}}).

while there are a lot of changes at once I think they are quite easy to
»read», if you prefer a set of progressive patches I can do that, will
require some more work, just matter of time.

the API of {{{internal.c}}} isn’t changed, I added only static functions
and a couple of macro.

the {{{sftpfs_*}}} functions had almost all the same pattern:

— a »prepare» stage at the top which initialized some variable, I moved
all this stuff to {{{_sftpfs_op_init}}}, {{{struct vfs_s_super *super}}}
is used only there, so has been removed from all other function;

— at the bottom, within the {{{do {…} while(res == EAGAIN)}}}, there was
always the same check, if the error isn’t EAGAIN map the ssh error to glib
and return -1, optionally g_free a temporary path allocated, else call
{{{sftpfs_waitsocket}}} and when it return check again for errors. I moved
all this into {{{_waitsocket_or_error}}}, which eventually call the added
macro {{{mc_return_val_if_error_and_free}}}, they both take into account
the optional (non NULL) pointer to free.

{{{sftpfs_lstat}}}, {{{sftpfs_stat}}} and {{{sftpfs_chmod}}} now simply
call {{{_sftpfs_stat}}}, only {{{stat_type}}} may be different.

only {{{sftpfs_lstat}}} and {{{sftpfs_stat}}} call
{{{_sftpfs_attr_to_buf}}} which I think is self explanatory.

the patch for the for regression which caused segfault is within
{{{_sftpfs_attr_to_buf}}} (below the comment)

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:21>

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link

—————————+———————————————
Reporter: pingu | Owner:

Type: defect | Status: new
Priority: minor | Milestone: Future Releases
Component: mc-vfs | Version: master

Resolution: | Keywords: -31 sftp error chiper
Blocked By: | Blocking:
Branch state: no branch | Votes for changeset:
—————————+———————————————

Comment (by andrew_b):

I think we should use #3749 as base for this.

{{{
if (to_free != NULL)
g_free(to_free);
}}}
@sand, this check is redundant. g_free() makes this check itself.

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:22>

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link

—————————+———————————————
Reporter: pingu | Owner:

Type: defect | Status: new
Priority: minor | Milestone: Future Releases
Component: mc-vfs | Version: master

Resolution: | Keywords: -31 sftp error chiper
Blocked By: | Blocking:
Branch state: no branch | Votes for changeset:
—————————+———————————————

Comment (by sand):

@andrew_b thanks, done, I didn’t know.

Also, as mentioned somewhere above, I think all »fix statements» could
be moved outside of the {{{do{…}while(EAGAIN)}}}, {{{fixfname}}} are
declared as {{{const}}}, the {{{libssh2_sftp_*_ex}}} calls shouldn’t touch
its content, or I’m missing something?:
{{{
const char *fixfname;

fixfname = sftpfs_fix_filename…
}}}

If you can confirm the patch is moving in the right direction I’ll look
into testing the changes.

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:23>

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link

—————————+———————————————
Reporter: pingu | Owner:

Type: defect | Status: new
Priority: minor | Milestone: Future Releases
Component: mc-vfs | Version: master

Resolution: | Keywords: -31 sftp error chiper
Blocked By: | Blocking:
Branch state: no branch | Votes for changeset:
—————————+———————————————

Comment (by andrew_b):

Branch: 3406_sftp_error_31
Initial changeset:822a0705a70fa44c7324923a5c9947faffb8a35e

Both and’s patches are applied.
sand’s big patch was split by several small patches and applied with some
modification.

The work is not finished. Refactoring of internal.c only was made. Such
refactoring is required for file.c and dir.c.

Currently we still have the -31 error at least in following two cases:
* remove file in sftp server;
* download file from sftp server.

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:24>

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link

—————————+———————————————
Reporter: pingu | Owner:

Type: defect | Status: new
Priority: minor | Milestone: Future Releases
Component: mc-vfs | Version: master

Resolution: | Keywords: -31 sftp error chiper
Blocked By: | Blocking:
Branch state: no branch | Votes for changeset:
—————————+———————————————

Comment (by zaytsev):

Great work, awesome!

Nitpick:

The code in 38344f3fa68b0705d686747cd99348f6420e16b7:

{{{
545 if (sftpfs_is_sftp_error
(super_data->sftp_session, res, LIBSSH2_FX_NO_SUCH_FILE))
546 return ENOENT;
547
548 if (sftpfs_is_sftp_error
(super_data->sftp_session, res, LIBSSH2_FX_FAILURE))
549 {
550 res = 0; /* need something like
ftpfs_ignore_chattr_errors */
551 break;
552 }
}}}

Should have been added in 10fedd5defa2d0c64bc8a1bd6d4f8c2e7a9fccf0 I
think.

Question:

In 1740153a767e31523773046fffb7fe60c275f70f maybe

{{{
439 if (res == -1 || res == EACCES || res == ENOENT)
440 return res;
}}}

should be `if (res < 0)` ? Otherwise these lines will have always to be
kept in sync with what ` sftpfs_internal_stat` can return?

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:25>

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link
—————————+———————————————
Reporter: pingu | Owner:
Type: defect | Status: new
Priority: minor | Milestone: Future Releases
Component: mc-vfs | Version: master
Resolution: | Keywords: -31 sftp error chiper
Blocked By: | Blocking:
Branch state: no branch | Votes for changeset:
—————————+———————————————

Comment (by andrew_b):

Replying to [comment:25 zaytsev]:

> Should have been added in 10fedd5defa2d0c64bc8a1bd6d4f8c2e7a9fccf0 I
think.

> […]

> should be `if (res < 0)` ?

Done.

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:26>

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link
—————————+———————————————
Reporter: pingu | Owner:
Type: defect | Status: new
Priority: minor | Milestone: Future Releases
Component: mc-vfs | Version: master
Resolution: | Keywords: -31 sftp error chiper
Blocked By: | Blocking:
Branch state: no branch | Votes for changeset:
—————————+———————————————

Comment (by andrew_b):

Replying to [comment:13 zaytsev]:
> {{{

> + if (res == LIBSSH2_ERROR_SFTP_PROTOCOL &&
> + libssh2_sftp_last_error(super_data->sftp_session) ==

LIBSSH2_FX_NO_SUCH_FILE)
> + return ENOENT;
> +
> }}}

Well, I have read `man 2 stat` (really, I done it!) and found out that we
can’t use such way because:
* `E*` constants are positive, and if we want return negative values on
error, we must return `-EACCES` `-ENOENT`, etc.
* on error, *stat should `return (-1)` and set `errno`. In our case
`errno` is `vfs_calss::verrno` and E* conatsnts are values for that.

As a result of above, the branch should be reworked almost totally.

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:27>

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link
—————————+———————————————
Reporter: pingu | Owner:
Type: defect | Status: new
Priority: minor | Milestone: Future Releases
Component: mc-vfs | Version: master
Resolution: | Keywords: -31 sftp error chiper
Blocked By: | Blocking:
Branch state: no branch | Votes for changeset:
—————————+———————————————

Comment (by zaytsev):

Oh, my fault, I’ve just copied what Andreas did, sorry about that :-/ So,
these two commits:

* 7b668721531521b7477c4bb6cf648dbbab63ce81
* 22aa301fbaf152dfde57b24069eddb6b49b4aa22

are completely wrong, and, consequently, everything that follows them has
to be updated

Of course, you are right about E* being positive, but I think that we
shouldn’t rely on that, and the second approach you suggested must be
followed.

Are you planning to work on this anytime in the future? I’m asking because
currently the branch does not compile due to latest commits.

{{{
../../../../src/vfs/sftpfs/file.c: In function
‘sftpfs_file__handle_error’:

../../../../src/vfs/sftpfs/file.c:84:16: error: ‘EACCES’ undeclared (first
use in this function)

../../../../src/vfs/sftpfs/file.c:84:16: note: each undeclared identifier
is reported only once for each function it appears in

../../../../src/vfs/sftpfs/file.c:87:16: error: ‘ENOENT’ undeclared (first
use in this function)
}}}

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:28>

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link
—————————+———————————————
Reporter: pingu | Owner:
Type: defect | Status: new
Priority: minor | Milestone: Future Releases
Component: mc-vfs | Version: master
Resolution: | Keywords: -31 sftp error chiper
Blocked By: | Blocking:
Branch state: no branch | Votes for changeset:
—————————+———————————————

Comment (by andrew_b):

> REMOVE REMOTE FILE: «-31: Failed opening remote file»
The root of the this problem is the passing the file to the opendir()
callback:

panel_operate -> panel_operate_init_totals -> compute_dir_size ->
do_compute_dir_size -> mc_opendir -> sftpfs_opendir ->
libssh2_sftp_open_ex (…, fixfname, …, LIBSSH2_SFTP_OPENDIR);

Here the «fixfname» is the file not a directory, but we try use it as
directory.

Branch: 3406_sftp_error_31
Initial changeset:8d2bf20aa44912565dffe41deaa433467ad37668

Please review.

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:29>

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link
—————————+———————————————
Reporter: pingu | Owner:
Type: defect | Status: new

Priority: minor | Milestone: 4.8.21

Component: mc-vfs | Version: master
Resolution: | Keywords: -31 sftp error chiper
Blocked By: | Blocking:

Branch state: on review | Votes for changeset:
—————————+———————————————
Changes (by andrew_b):

* branch_state: no branch => on review
* milestone: Future Releases => 4.8.21

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:30>

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link
—————————+———————————————
Reporter: pingu | Owner:
Type: defect | Status: new
Priority: minor | Milestone: 4.8.21
Component: mc-vfs | Version: master
Resolution: | Keywords: -31 sftp error chiper
Blocked By: | Blocking:
Branch state: on review | Votes for changeset:
—————————+———————————————

Comment (by zaytsev):

The refactoring looks awesome, it’s exactly what I had in mind plus much
more, however, I can’t currently test this code. Could one of the long
term error -31 sufferers please check this branch?

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:31>

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link
—————————+———————————————
Reporter: pingu | Owner:
Type: defect | Status: new
Priority: minor | Milestone: 4.8.21
Component: mc-vfs | Version: master
Resolution: | Keywords: -31 sftp error chiper
Blocked By: | Blocking:
Branch state: on review | Votes for changeset:
—————————+———————————————

Comment (by aloy):

I’ve just tested this branch and it seems to fix the -31 error for me.
Might need some more testing but it looks like the error is gone for me.

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:32>

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link
—————————+———————————————
Reporter: pingu | Owner:
Type: defect | Status: new
Priority: minor | Milestone: 4.8.21
Component: mc-vfs | Version: master
Resolution: | Keywords: -31 sftp error chiper
Blocked By: | Blocking:
Branch state: on review | Votes for changeset:
—————————+———————————————

Comment (by andrew_b):

Thanks for feedback.
I’m going to merge this branch at the weekend.

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:33>

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link
————————-+———————————————
Reporter: pingu | Owner:
Type: defect | Status: new
Priority: minor | Milestone: 4.8.21
Component: mc-vfs | Version: master
Resolution: | Keywords: -31 sftp error chiper
Blocked By: | Blocking:

Branch state: approved | Votes for changeset: andrew_b
————————-+———————————————
Changes (by andrew_b):

* votes: => andrew_b
* branch_state: on review => approved

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:34>

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#3406: -31: SFTP Protocol Error when transferring file via SFTP Link
————————+———————————————
Reporter: pingu | Owner:

Type: defect | Status: closed

Priority: minor | Milestone: 4.8.21
Component: mc-vfs | Version: master

Resolution: fixed | Keywords: -31 sftp error chiper
Blocked By: | Blocking:
Branch state: merged | Votes for changeset: committed-master
————————+———————————————
Changes (by andrew_b):

* status: new => closed
* votes: andrew_b => committed-master
* resolution: => fixed
* branch_state: approved => merged

Comment:

Merged to master: 79b6a772fe3677f5f8752f317a689570db871359[].
{{{
git log —pretty=oneline 218dcea..79b6a77
}}}

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:35>

to junk…@inbox.lv, mc-…@googlegroups.com, gra…@nerve.org.za

#3406: -31: SFTP Protocol Error when transferring file via SFTP Link
————————+———————————————
Reporter: pingu | Owner:

Type: defect | Status: reopened

Priority: minor | Milestone: 4.8.21
Component: mc-vfs | Version: master

Resolution: | Keywords: -31 sftp error chiper

Blocked By: | Blocking:
Branch state: merged | Votes for changeset: committed-master
————————+———————————————
Changes (by andrew_b):

* status: closed => reopened
* resolution: fixed =>

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:36>

to junk…@inbox.lv, andrew….@gmail.com, mc-…@googlegroups.com, gra…@nerve.org.za

#3406: -31: SFTP Protocol Error when transferring file via SFTP Link
————————+———————————————

Reporter: pingu | Owner: andrew_b
Type: defect | Status: accepted

Priority: minor | Milestone: 4.8.21
Component: mc-vfs | Version: master
Resolution: | Keywords: -31 sftp error chiper
Blocked By: | Blocking:
Branch state: merged | Votes for changeset: committed-master
————————+———————————————
Changes (by andrew_b):

* owner: => andrew_b
* status: reopened => accepted

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:37>

to junk…@inbox.lv, andrew….@gmail.com, mc-…@googlegroups.com, gra…@nerve.org.za

#3406: -31: SFTP Protocol Error when transferring file via SFTP Link
————————+———————————————
Reporter: pingu | Owner: andrew_b

Type: defect | Status: testing

Priority: minor | Milestone: 4.8.21
Component: mc-vfs | Version: master

Resolution: fixed | Keywords: -31 sftp error chiper

Blocked By: | Blocking:
Branch state: merged | Votes for changeset: committed-master
————————+———————————————
Changes (by andrew_b):

* status: accepted => testing
* resolution: => fixed

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:38>

to junk…@inbox.lv, andrew….@gmail.com, mc-…@googlegroups.com, gra…@nerve.org.za

#3406: -31: SFTP Protocol Error when transferring file via SFTP Link
————————+———————————————
Reporter: pingu | Owner: andrew_b

Type: defect | Status: closed

Priority: minor | Milestone: 4.8.21
Component: mc-vfs | Version: master
Resolution: fixed | Keywords: -31 sftp error chiper
Blocked By: | Blocking:
Branch state: merged | Votes for changeset: committed-master
————————+———————————————
Changes (by andrew_b):

* status: testing => closed

—
Ticket URL: <http://www.midnight-commander.org/ticket/3406#comment:39>

Zyxmon

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Yrzorg

Сообщения: 82

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[admin@KN-ULTRA2 : /opt/home/admin]#>mc -F
Home directory: /home/admin
Profile root directory: /home/admin

[System data]
    Config directory: /opt/etc/mc/
    Data directory:   /opt/share/mc/
    File extension handlers: /opt/lib/mc/ext.d/
    VFS plugins and scripts: /opt/lib/mc/
        extfs.d:        /opt/lib/mc/extfs.d/
        fish:           /opt/lib/mc/fish/

[User data]
    Config directory: /opt/etc/mc/
    Data directory:   /opt/etc/mc/
        skins:          /opt/etc/mc/skins/
        extfs.d:        /opt/etc/mc/extfs.d/
        fish:           /opt/etc/mc/fish/
        mcedit macros:  /opt/etc/mc/mc.macros
        mcedit external macros: /opt/etc/mc/mcedit/macros.d/macro.*
    Cache directory:  /opt/etc/mc/

Zyxmon

Администратор

Сообщения: 1910

Зарегистрирован: 09 авг 2015, 15:33

kaztost

Сообщения: 223

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Yrzorg

Сообщения: 82

Зарегистрирован: 05 окт 2015, 13:23

kaztost

Сообщения: 223

Зарегистрирован: 17 июл 2017, 00:29

Yrzorg

Сообщения: 82

Зарегистрирован: 05 окт 2015, 13:23

[admin@KN-ULTRA2 : /opt/home/admin]#>mc -F
Home directory: /home/admin
Profile root directory: /home/admin

kaztost

Сообщения: 223

Зарегистрирован: 17 июл 2017, 00:29

Zyxmon

Администратор

Сообщения: 1910

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I am hitting a Protocol error while trying to SFTP from one server to another. I have tried to search up Google to no avail. May i know if anyone can help me with this.

rel@kingfisher:/kingfisher_bft/hme/rel>  sftp relst@111.32.171.172
Need basic cursor movement capability, using vt100
error: Could not open connection to `rel@111.32.171.172': Protocol error

asked Oct 16, 2012 at 3:40

2