tramp (2.0.25); Hangs on connect

[Ian Bicking]

--bug report follows this line--

Sorry, this may be a duplicate, but I wasn't sure if this got through.


The connection is hanging when I try to ssh as root to a computer.  It
seems to work fine if I go in as a normal user.  Tramp was working in 
this environment earlier, but broke when I upgraded the Debian package
to its current version.  The target box is a pretty plain Debian 
installation, no customization done to .bashrc or anything else.

I've included the *debug...* output both for the failed root login,
and the successful non-root login.

*tramp/ssh address@hidden

foo
bar
$ $ 

*debug tramp ...*

# Opening connection for address@hidden using ssh...
# Waiting for prompts from remote shell
# Waiting 60s for prompt from remote shell
# Found remote shell prompt.
# Initializing remote shell
$ exec env PS1='$ ' /bin/sh
# Waiting 30s for remote `/bin/sh' to come up...
exec env 'PS1=$ ' /bin/sh
$ # Setting up remote shell environment
stty -inlcr -echo kill '^U'
$ $ # Determining coding system
foo
bar
$ # Trying `stty -onlcr'

*tramp/ssh address@hidden

tramp_exit_status 0

*debug tramp ...*

# Opening connection for address@hidden using ssh...
# Waiting for prompts from remote shell
# Waiting 60s for prompt from remote shell
# Found remote shell prompt.
# Initializing remote shell
$ exec env PS1='$ ' /bin/sh
# Waiting 30s for remote `/bin/sh' to come up...
$ # Setting up remote shell environment
$ $ # Determining coding system
foo
bar
$ # Waiting 30s for `HISTFILE=$HOME/.tramp_history; HISTSIZE=1'
$ # Waiting 30s for `set +o vi +o emacs'
$ # Waiting 30s for `unset MAIL MAILCHECK MAILPATH'
$ # Waiting 30s for `unset CDPATH'
$ # Setting shell prompt
$ PS1='
///c29a5b235a5060c2aba138bf20461229
'; PS2=''; PS3=''
$ echo ~root
/root
# Remote `/bin/sh' groks tilde expansion, good
# Finding command to check if file exists
$ test -e / 2>/dev/null; echo tramp_exit_status $? 
tramp_exit_status 0
$ test -e /\ this\ file\ does\ not\ exist\  2>/dev/null; echo tramp_exit_status 
$? 
tramp_exit_status 1
# Finding a suitable `ls' command
# Checking remote `/bin/ls' command for `-n' option
$ test -x /bin/ls 2>/dev/null; echo tramp_exit_status $? 
tramp_exit_status 0
# Testing remote command `/bin/ls' for -n...
$ /bin/ls -lnd / >/dev/null 2>/dev/null; echo tramp_exit_status $? 
tramp_exit_status 0
# Testing remote command `/bin/ls' for -n...okay
# Using remote command `/bin/ls' for getting directory listings
$ tramp_set_exit_status () {
return $1
}
$ test -e /bin 2>/dev/null; echo tramp_exit_status $? 
tramp_exit_status 0
$ ( test -d /bin 2>/dev/null; echo tramp_exit_status $? )
tramp_exit_status 0
$ test -e /usr/bin 2>/dev/null; echo tramp_exit_status $? 
tramp_exit_status 0
$ ( test -d /usr/bin 2>/dev/null; echo tramp_exit_status $? )
tramp_exit_status 0
$ test -e /usr/sbin 2>/dev/null; echo tramp_exit_status $? 
tramp_exit_status 0
$ ( test -d /usr/sbin 2>/dev/null; echo tramp_exit_status $? )
tramp_exit_status 0
$ test -e /usr/local/bin 2>/dev/null; echo tramp_exit_status $? 
tramp_exit_status 0
$ ( test -d /usr/local/bin 2>/dev/null; echo tramp_exit_status $? )
tramp_exit_status 0
$ test -e /usr/ccs/bin 2>/dev/null; echo tramp_exit_status $? 
tramp_exit_status 1
$ test -e /local/bin 2>/dev/null; echo tramp_exit_status $? 
tramp_exit_status 1
$ test -e /local/freeware/bin 2>/dev/null; echo tramp_exit_status $? 
tramp_exit_status 1
$ test -e /local/gnu/bin 2>/dev/null; echo tramp_exit_status $? 
tramp_exit_status 1
$ test -e /usr/freeware/bin 2>/dev/null; echo tramp_exit_status $? 
tramp_exit_status 1
$ test -e /usr/pkg/bin 2>/dev/null; echo tramp_exit_status $? 
tramp_exit_status 1
$ test -e /usr/contrib/bin 2>/dev/null; echo tramp_exit_status $? 
tramp_exit_status 1
$ PATH=/bin:/usr/bin:/usr/sbin:/usr/local/bin; export PATH
$ LC_TIME=C; export LC_TIME; echo huhu
huhu
$ mesg n; echo huhu
huhu
$ biff n ; echo huhu
huhu
$ unalias ls; echo huhu
sh: unalias: ls: not found
huhu
$ ( test / -nt / )
$ tramp_test_nt () {
test -n "`find $1 -prune -newer $2 -print`"
}
$ tramp_uudecode () {
(echo begin 600 /tmp/tramp.$$; tail +2) | uudecode
cat /tmp/tramp.$$
rm -f /tmp/tramp.$$
}
$ while read d; do if test -x $d/perl5 -a -f $d/perl5; then echo 
tramp_executable $d/perl5; break; fi; done <<'EOF'
$ /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
$ EOF
$ while read d; do if test -x $d/perl -a -f $d/perl; then echo tramp_executable 
$d/perl; break; fi; done <<'EOF'
$ /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
$ EOF
tramp_executable /usr/bin/perl
# Sending the Perl `file-attributes' implementation.
$ tramp_file_attributes () {
/usr/bin/perl -e '$f = $ARGV[0];
@s = lstat($f);
if (($s[2] & 0170000) == 0120000) { $l = readlink($f); $l = "\"$l\""; }
elsif (($s[2] & 0170000) == 040000) { $l = "t"; }
else { $l = "nil" };
printf("(%s %u %d %d (%u %u) (%u %u) (%u %u) %u %u t (%u . %u) (%u %u))\n",
$l, $s[3], $s[4], $s[5], $s[8] >> 16 & 0xffff, $s[8] & 0xffff,
$s[9] >> 16 & 0xffff, $s[9] & 0xffff, $s[10] >> 16 & 0xffff, $s[10] & 0xffff,
$s[7], $s[2], $s[1] >> 16 & 0xffff, $s[1] & 0xffff, $s[0] >> 16 & 0xffff, $s[0] 
& 0xffff);' $1 2>/dev/null
}
# Sending the Perl `mime-encode' implementations.
$ tramp_encode () {
/usr/bin/perl -e '
# This script contributed by Juanma Barranquero <address@hidden>.
# Copyright (C) 2002 Free Software Foundation, Inc.
use strict;

my %trans = do {
    my $i = 0;
    map {(substr(unpack(q(B8), chr $i++), 2, 6), $_)}
      split //, 
q(ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/);
};

binmode(\*STDIN);

# We read in chunks of 54 bytes, to generate output lines
# of 72 chars (plus end of line)
$/ = \54;

while (my $data = <STDIN>) {
    my $pad = q();

    # Only for the last chunk, and only if did not fill the last three-byte 
packet
    if (eof) {
        my $mod = length($data) % 3;
        $pad = q(=) x (3 - $mod) if $mod;
    }

    # Not the fastest method, but it is simple: unpack to binary string, split
    # by groups of 6 bits and convert back from binary to byte; then map into
    # the translation table
    print
      join q(),
        map($trans{$_},
            (substr(unpack(q(B*), $data) . q(00000), 0, 432) =~ /....../g)),
              $pad,
                qq(\n);
}
' 2>/dev/null
}
$ tramp_encode_with_module () {
perl -MMIME::Base64 -0777 -ne 'print encode_base64($_)' 2>/dev/null
}
# Sending the Perl `mime-decode' implementations.
$ tramp_decode () {
/usr/bin/perl -e '
# This script contributed by Juanma Barranquero <address@hidden>.
# Copyright (C) 2002 Free Software Foundation, Inc.
use strict;

my %trans = do {
    my $i = 0;
    map {($_, substr(unpack(q(B8), chr $i++), 2, 6))}
      split //, 
q(ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/)
};

my %bytes = map {(unpack(q(B8), chr $_), chr $_)} 0 .. 255;

binmode(\*STDOUT);

# We are going to accumulate into $pending to accept any line length
# (we do not check they are <= 76 chars as the RFC says)
my $pending = q();

while (my $data = <STDIN>) {
    chomp $data;

    # If we find one or two =, we have reached the end and
    # any following data is to be discarded
    my $finished = $data =~ s/(==?).*/$1/;
    $pending .= $data;

    my $len = length($pending);
    my $chunk = substr($pending, 0, $len & ~3);

    # Easy method: translate from chars to (pregenerated) six-bit packets, join,
    # split in 8-bit chunks and convert back to char.
    print join q(),
      map $bytes{$_},
        ((join q(), map {$trans{$_} || q()} split //, $chunk) =~ /......../g);

    last if $finished;
}
' 2>/dev/null
}
$ tramp_decode_with_module () {
perl -MMIME::Base64 -0777 -ne 'print decode_base64($_)' 2>/dev/null
}
$ while read d; do if test -x $d/ln -a -f $d/ln; then echo tramp_executable 
$d/ln; break; fi; done <<'EOF'
$ /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
$ EOF
tramp_executable /bin/ln
# Checking remote encoding command `mimencode -b' for sanity
$ ( mimencode -b </dev/null 2>/dev/null; echo tramp_exit_status $? )
tramp_exit_status 0
# Checking remote decoding command `mimencode -u -b' for sanity
$ ( echo xyzzy | mimencode -b | mimencode -u -b 2>/dev/null; echo 
tramp_exit_status $? )
xyzzy
tramp_exit_status 0
# Checking to see if encoding/decoding commands work on remote host...
$ echo xyzzy | mimencode -b | mimencode -u -b
xyzzy
# Checking to see if encoding/decoding commands work on remote host...done
$ cd / 2>/dev/null; echo tramp_exit_status $? 
tramp_exit_status 0
$ /bin/ls -a  2>/dev/null | while read f; do if test -d "$f" 2>/dev/null; then 
echo "$f/"; else echo "$f"; fi; done
./
../
backups/
bin/
boot/
cdrom/
dev/
etc/
floppy/
home/
initrd/
lib/
lost+found/
mnt/
opt/
orig/
proc/
root/
sbin/
tmp/
usr/
var/
vmlinuz
www/
$ cd
$ test -e / 2>/dev/null; echo tramp_exit_status $? 
tramp_exit_status 0










Emacs  : XEmacs 21.4 (patch 8) "Honest Recruiter" [Lucid] (i386-debian-linux) 
of Tue Aug  6 2002 on eeyore
Package: tramp (2.0.25)

current state:
==============
(setq
 tramp-ls-command nil
 tramp-test-groks-nt nil
 tramp-file-exists-command nil
 tramp-current-multi-method nil
 tramp-current-method nil
 tramp-current-user nil
 tramp-current-host nil
 tramp-auto-save-directory nil
 tramp-default-method "scp"
 tramp-rsh-end-of-line "\n"
 tramp-password-end-of-line "\n"
 tramp-remote-path '("/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")
 tramp-login-prompt-regexp ".*ogin: *"
 tramp-password-prompt-regexp "^.*\\([pP]assword\\|passphrase.*\\):