tramp (2.1.2-pre); remote scp connection killed even though ssh works

[Ted Stern]

Enter your bug report in this message, including as much detail as you
possibly can about the problem, what you did to cause it and what the
local and remote machines are.

If you can give a simple set of instructions to make this bug happen
reliably, please include those.  Thank you for helping kill bugs in
TRAMP.

Another useful thing to do is to put (setq tramp-debug-buffer t) in
the ~/.emacs file and to repeat the bug.  Then, include the contents
of the *tramp/foo* buffer and the *debug tramp/foo* buffer in your bug
report.

--bug report follows this line--

Hi -- recently my working scp connection stopped working.  I'm running from
CVS tramp with emacs 21.3.

There are several possibilities:

 - I've updated tramp
 - I've modified my bash prompt to include a return:

norm="\[\e[0m\]"
xtitl="\[\e]2;address@hidden:\w\a\]"     # title for xterm
magenta="\[\e[2;35m\]"          # color for time part
red="\[\e[2;31m\]"              # color for "dollar" prompt part
green="\[\e[2;32m\]"
pr1="address@hidden:\$?${norm}"    # 1st part of prompt, address@hidden
pr2="${magenta}\t${norm}"       # 2nd part of prompt, HH:MM:SS
pr3="${green}\w${norm}"         # use \W instead of \w for basename
pr4="\$"                        # 4th part of prompt, uncolored $/#
PS1="${xtitle}${pr1} ${pr2} ${pr3}
${pr4} "

 - I've been playing with my ssh keys.

,----[ *Backtrace* ]
|   byte-code("Ã       ƒ
|   gnuserv-process-filter(#<process gnuserv> "5 (gnuserv-edit-files '(x 
\"monkeypuzzle.wc.cray.com:0.0\") '((1 . \"/yasim:/ptmp/stern/run.job\")))")
`----

,----[ *tramp/scp address@hidden ]
| ssh yasim -l stern  -e none; echo "Tramp connection closed
| Process *tramp/scp address@hidden killed
`----

,----[ *debug tramp/scp address@hidden after trying twice]
| # Opening connection for address@hidden using scp...
| # Waiting 60s for local shell to come up...
| $ # Sending command `ssh yasim -l stern  -e none; echo "Tramp connection 
closed"; sleep 1'
| # Waiting for prompts from remote shell
| # Waiting 60s for prompt from remote shell on host yasim
| # Permission denied by remote host `yasim'
| # Opening connection for address@hidden using scp...
| # Waiting 60s for local shell to come up...
| $ # Sending command `ssh yasim -l stern  -e none; echo "Tramp connection 
closed"; sleep 1'
| # Waiting for prompts from remote shell
| # Waiting 60s for prompt from remote shell on host yasim
| # Permission denied by remote host `yasim'
`----


Of course, I can simply connect from an interactive shell with no problems.

-- Ted

Emacs  : GNU Emacs 21.3.1 (i686-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2004-01-24 on freebie.wc.cray.com
Package: tramp (2.1.2-pre)

current state:
==============
(setq
 tramp-ls-command nil
 tramp-test-groks-nt nil
 tramp-file-exists-command nil
 tramp-current-method nil
 tramp-current-user nil
 tramp-current-host nil
 tramp-auto-save-directory "~/.tramp"
 tramp-default-method "scp"
 tramp-default-method-alist '((nil "%" "smb")
                              ("" "\\`\\(anonymous\\|ftp\\)\\'" "ftp")
                              ("\\`ftp\\." "" "ftp")
                              ("\\`localhost\\'" "\\`root\\'" "su"))
 tramp-default-proxies-alist nil
 tramp-rsh-end-of-line "\n"
 tramp-default-password-end-of-line "\n"
 tramp-remote-path '("/usr/people/stern/bin" "/opt/openssh/openssh/bin"
                     "/opt/gnu2/bin" "/bin" "/usr/bin" "/usr/sbin"
                     "/usr/local/bin" "/usr/ccs/bin" "/local/bin"
                     "/local/freeware/bin" "/local/gnu/bin" "/usr/freeware/bin"
                     "/usr/pkg/bin" "/usr/contrib/bin" "/opt/gnu2/cvs/cvs/bin")
 tramp-login-prompt-regexp ".*ogin: *"
 tramp-password-prompt-regexp "^.*\\([pP]assword\\|passphrase.*\\):
 tramp-wrong-passwd-regexp "^.*\\(Connection 
\\(?:\\(?:clo\\|refu\\)sed\\)\\|Host key verification failed\\.\\|Login 
\\(?:[Ii]ncorrect\\)\\|Name or service not known\\|Permission 
denied\\.\\|Sorry, try again\\.\\|Tramp connection closed\\).*\\|^.*\\(Received 
signal [0-9]+\\).*"
 tramp-yesno-prompt-regexp "\\(Are you sure you want to continue connecting 
(yes/no)\\?\\)\\s-*"
 tramp-yn-prompt-regexp "\\(Store key in cache\\? (y/n)\\)\\s-*"
 tramp-terminal-prompt-regexp "\\(TERM = (.*)\\|Terminal type\\? 
\\[.*\\]\\)\\s-*"
 tramp-temp-name-prefix "tramp."
 tramp-file-name-structure '("^/\\(\\([a-zA-Z_0-9-]+\\):\\)?\\(\\([^:@/         
]*\\)@\\)?\\([a-zA-Z0-9_.#-]*\\):\\(.*$\\)" 2 4 5 6)
 tramp-file-name-regexp "\\`/[^/:]+:"
 tramp-methods '(("smb") ("ftp")
                 ("rcp" (tramp-login-program "rsh") (tramp-copy-program "rcp")
                  (tramp-remote-sh "/bin/sh")
                  (tramp-login-args (("%h") ("-l" "%u"))) (tramp-copy-args nil)
                  (tramp-copy-keep-date-arg "-p")
                  (tramp-password-end-of-line nil))
                 ("scp" (tramp-login-program "ssh") (tramp-copy-program "scp")
                  (tramp-remote-sh "/bin/sh")
                  (tramp-login-args
                   (("%h") ("-l" "%u") ("-p" "%p") ("-e" "none")))
                  (tramp-copy-args nil) (tramp-copy-keep-date-arg "-p")
                  (tramp-password-end-of-line nil))
                 ("scp1" (tramp-login-program "ssh") (tramp-copy-program "scp")
                  (tramp-remote-sh "/bin/sh")
                  (tramp-login-args
                   (("%h") ("-l" "%u") ("-p" "%p") ("-1" "-e" "none")))
                  (tramp-copy-args ("-1")) (tramp-copy-keep-date-arg "-p")
                  (tramp-password-end-of-line nil))
                 ("scp2" (tramp-login-program "ssh") (tramp-copy-program "scp")
                  (tramp-remote-sh "/bin/sh")
                  (tramp-login-args
                   (("%h") ("-l" "%u") ("-p" "%p") ("-2" "-e" "none")))
                  (tramp-copy-args ("-2")) (tramp-copy-keep-date-arg "-p")
                  (tramp-password-end-of-line nil))
                 ("scp1_old" (tramp-login-program "ssh1")
                  (tramp-copy-program "scp1") (tramp-remote-sh "/bin/sh")
                  (tramp-login-args
                   (("%h") ("-l" "%u") ("-p" "%p") ("-e" "none")))
                  (tramp-copy-args nil) (tramp-copy-keep-date-arg "-p")
                  (tramp-password-end-of-line nil))
                 ("scp2_old" (tramp-login-program "ssh2")
                  (tramp-copy-program "scp2") (tramp-remote-sh "/bin/sh")
                  (tramp-login-args
                   (("%h") ("-l" "%u") ("-p" "%p") ("-e" "none")))
                  (tramp-copy-args nil) (tramp-copy-keep-date-arg "-p")
                  (tramp-password-end-of-line nil))
                 ("sftp" (tramp-login-program "ssh")
                  (tramp-copy-program "sftp") (tramp-remote-sh "/bin/sh")
                  (tramp-login-args
                   (("%h") ("-l" "%u") ("-p" "%p") ("-e" "none")))
                  (tramp-copy-args nil) (tramp-copy-keep-date-arg nil)
                  (tramp-password-end-of-line nil))
                 ("rsync" (tramp-login-program "ssh")
                  (tramp-copy-program "rsync") (tramp-remote-sh "/bin/sh")
                  (tramp-login-args
                   (("%h") ("-l" "%u") ("-p" "%p") ("-e" "none")))
                  (tramp-copy-args ("-e" "ssh"))
                  (tramp-copy-keep-date-arg "-t")
                  (tramp-password-end-of-line nil))
                 ("remcp" (tramp-login-program "remsh")
                  (tramp-copy-program "rcp") (tramp-remote-sh "/bin/sh")
                  (tramp-login-args (("%h") ("-l" "%u"))) (tramp-copy-args nil)
                  (tramp-copy-keep-date-arg "-p")
                  (tramp-password-end-of-line nil))
                 ("rsh" (tramp-login-program "rsh") (tramp-copy-program nil)
                  (tramp-remote-sh "/bin/sh")
                  (tramp-login-args (("%h") ("-l" "%u"))) (tramp-copy-args nil)
                  (tramp-copy-keep-date-arg nil)
                  (tramp-password-end-of-line nil))
                 ("ssh" (tramp-login-program "ssh") (tramp-copy-program nil)
                  (tramp-remote-sh "/bin/sh")
                  (tramp-login-args
                   (("%h") ("-l" "%u") ("-p" "%p") ("-e" "none")))
                  (tramp-copy-args nil) (tramp-copy-keep-date-arg nil)
                  (tramp-password-end-of-line nil))
                 ("ssh1" (tramp-login-program "ssh") (tramp-copy-program nil)
                  (tramp-remote-sh "/bin/sh")
                  (tramp-login-args
                   (("%h") ("-l" "%u") ("-p" "%p") ("-1" "-e" "none")))
                  (tramp-copy-args ("-1")) (tramp-copy-keep-date-arg nil)
                  (tramp-password-end-of-line nil))
                 ("ssh2" (tramp-login-program "ssh") (tramp-copy-program nil)
                  (tramp-remote-sh "/bin/sh")
                  (tramp-login-args
                   (("%h") ("-l" "%u") ("-p" "%p") ("-2" "-e" "none")))
                  (tramp-copy-args ("-2")) (tramp-copy-keep-date-arg nil)
                  (tramp-password-end-of-line nil))
                 ("ssh1_old" (tramp-login-program "ssh1")
                  (tramp-copy-program nil) (tramp-remote-sh "/bin/sh")
                  (tramp-login-args
                   (("%h") ("-l" "%u") ("-p" "%p") ("-e" "none")))
                  (tramp-copy-args nil) (tramp-copy-keep-date-arg nil)
                  (tramp-password-end-of-line nil))
                 ("ssh2_old" (tramp-login-program "ssh2")
                  (tramp-copy-program nil) (tramp-remote-sh "/bin/sh")
                  (tramp-login-args
                   (("%h") ("-l" "%u") ("-p" "%p") ("-e" "none")))
                  (tramp-copy-args nil) (tramp-copy-keep-date-arg nil)
                  (tramp-password-end-of-line nil))
                 ("remsh" (tramp-login-program "remsh")
                  (tramp-copy-program nil) (tramp-remote-sh "/bin/sh")
                  (tramp-login-args (("%h") ("-l" "%u"))) (tramp-copy-args nil)
                  (tramp-copy-keep-date-arg nil)
                  (tramp-password-end-of-line nil))
                 ("telnet" (tramp-login-program "telnet")
                  (tramp-copy-program nil) (tramp-remote-sh "/bin/sh")
                  (tramp-login-args (("%h"))) (tramp-copy-args nil)
                  (tramp-copy-keep-date-arg nil)
                  (tramp-password-end-of-line nil))
                 ("su" (tramp-login-program "su") (tramp-copy-program nil)
                  (tramp-remote-sh "/bin/sh") (tramp-login-args (("-") ("%u")))
                  (tramp-copy-args nil) (tramp-copy-keep-date-arg nil)
                  (tramp-password-end-of-line nil))
                 ("sudo" (tramp-login-program "sudo") (tramp-copy-program nil)
                  (tramp-remote-sh "/bin/sh")
                  (tramp-login-args (("-u" "%u") ("-s" "-p" "Password:")))
                  (tramp-copy-args nil) (tramp-copy-keep-date-arg nil)
                  (tramp-password-end-of-line nil))
                 ("scpx" (tramp-login-program "ssh") (tramp-copy-program "scp")
                  (tramp-remote-sh "/bin/sh")
                  (tramp-login-args
                   (("%h") ("-l" "%u") ("-p" "%p")
                    ("-e" "none" "-t" "-t" "/bin/sh"))
                   )
                  (tramp-copy-args nil) (tramp-copy-keep-date-arg "-p")
                  (tramp-password-end-of-line nil))
                 ("sshx" (tramp-login-program "ssh") (tramp-copy-program nil)
                  (tramp-remote-sh "/bin/sh")
                  (tramp-login-args
                   (("%h") ("-l" "%u") ("-p" "%p")
                    ("-e" "none" "-t" "-t" "/bin/sh"))
                   )
                  (tramp-copy-args nil) (tramp-copy-keep-date-arg nil)
                  (tramp-password-end-of-line nil))
                 ("krlogin" (tramp-login-program "krlogin")
                  (tramp-copy-program nil) (tramp-remote-sh "/bin/sh")
                  (tramp-login-args (("%h") ("-l" "%u") ("-x")))
                  (tramp-copy-args nil) (tramp-copy-keep-date-arg nil)
                  (tramp-password-end-of-line nil))
                 ("plink" (tramp-login-program "plink")
                  (tramp-copy-program nil) (tramp-remote-sh "/bin/sh")
                  (tramp-login-args (("%h") ("-l" "%u") ("-P" "%p") ("-ssh")))
                  (tramp-copy-args nil) (tramp-copy-keep-date-arg nil)
                  (tramp-password-end-of-line "xy"))
                 ("plink1" (tramp-login-program "plink")
                  (tramp-copy-program nil) (tramp-remote-sh "/bin/sh")
                  (tramp-login-args
                   (("%h") ("-l" "%u") ("-P" "%p") ("-1" "-ssh")))
                  (tramp-copy-args nil) (tramp-copy-keep-date-arg nil)
                  (tramp-password-end-of-line "xy"))
                 ("pscp" (tramp-login-program "plink")
                  (tramp-copy-program "pscp") (tramp-remote-sh "/bin/sh")
                  (tramp-login-args (("%h") ("-l" "%u") ("-P" "%p") ("-ssh")))
                  (tramp-copy-args ("-scp")) (tramp-copy-keep-date-arg "-p")
                  (tramp-password-end-of-line "xy"))
                 ("psftp" (tramp-login-program "plink")
                  (tramp-copy-program "pscp") (tramp-remote-sh "/bin/sh")
                  (tramp-login-args ("%h") ("-l" "%u") ("-P" "%p") ("-ssh"))
                  (tramp-copy-args ("-psftp")) (tramp-copy-keep-date-arg "-p")
                  (tramp-password-end-of-line "xy"))
                 ("fcp" (tramp-login-program "fsh") (tramp-copy-program "fcp")
                  (tramp-remote-sh "/bin/sh -i")
                  (tramp-login-args (("%h") ("-l" "%u") ("sh" "-i")))
                  (tramp-copy-args nil) (tramp-copy-keep-date-arg "-p")
                  (tramp-password-end-of-line nil))
                 )
 tramp-end-of-output "///da79ad9c6cb0f931f26207dd8acd0b89"
 tramp-coding-commands '(("mimencode -b" "mimencode -u -b" base64-encode-region
                          base64-decode-region)
                         ("mmencode -b" "mmencode -u -b" base64-encode-region
                          base64-decode-region)
                         ("recode data..base64" "recode base64..data"
                          base64-encode-region base64-decode-region)
                         ("uuencode xxx" "uudecode -o -" tramp-uuencode-region
                          uudecode-decode-region)
                         ("uuencode xxx" "uudecode -p" tramp-uuencode-region
                          uudecode-decode-region)
                         ("uuencode xxx" "tramp_uudecode" tramp-uuencode-region
                          uudecode-decode-region)
                         ("tramp_encode_with_module" "tramp_decode_with_module"
                          base64-encode-region base64-decode-region)
                         ("tramp_encode" "tramp_decode" base64-encode-region
                          base64-decode-region)
                         )
 tramp-actions-before-shell '((tramp-password-prompt-regexp
                               tramp-action-password)
                              (tramp-login-prompt-regexp tramp-action-login)
                              (shell-prompt-pattern tramp-action-succeed)
                              (tramp-shell-prompt-pattern tramp-action-succeed)
                              (tramp-wrong-passwd-regexp
                               tramp-action-permission-denied)
                              (tramp-yesno-prompt-regexp tramp-action-yesno)
                              (tramp-yn-prompt-regexp tramp-action-yn)
                              (tramp-terminal-prompt-regexp
                               tramp-action-terminal)
                              (tramp-process-alive-regexp
                               tramp-action-process-alive)
                              )
 tramp-actions-copy-out-of-band '((tramp-password-prompt-regexp
                                   tramp-action-password)
                                  (tramp-wrong-passwd-regexp
                                   tramp-action-permission-denied)
                                  (tramp-process-alive-regexp
                                   tramp-action-out-of-band)
                                  )
 tramp-terminal-type "dumb"
 tramp-shell-prompt-pattern "^[^#$%>\n]*[#$%>] *\\(\\[[0-9;]*[a-zA-Z] *\\)*"
 tramp-chunksize nil
 tramp-backup-directory-alist nil
 nil nil
 shell-prompt-pattern "^[^#$%>\n]*[#$%>] *"
 backup-by-copying nil
 backup-by-copying-when-linked nil
 backup-by-copying-when-mismatch nil
 backup-by-copying-when-privileged-mismatch 200
 password-cache t
 password-cache-expiry 200
 backup-directory-alist nil
 nil nil
 file-name-handler-alist '(("^/$\\|^/[^/:][^/]*$" .
                            tramp-completion-file-name-handler)
                           ("\\`/[^/:]+:" . tramp-file-name-handler)
                           ("\\`/:" . file-name-non-special))
 )

-- 
 Ted Stern                                 Applications Group
 Cray Inc.                               office: 206-701-2182
 411 First Avenue South, Suite 600         cell: 206-383-1049
 Seattle, WA 98104-2860                     FAX: 206-701-2500

 Frango ut patefaciam -- I break that I may reveal
 (The Paleontological Society motto, equally apropos for debugging)