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usr/bin/byobu-launcher: handle nasty recursion, if ssh'ing to localhost,

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and byobu-launches-by-default, LP: #595137
This commit is contained in:
Dustin Kirkland 2010-06-16 12:42:46 -05:00
commit 403bffe8a2
2 changed files with 25 additions and 2 deletions
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3
debian/changelog vendored
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@ -1,6 +1,7 @@
byobu (2.80) unreleased; urgency=low
* UNRELEASED
* usr/bin/byobu-launcher: handle nasty recursion, if ssh'ing to localhost,
and byobu-launches-by-default, LP: #595137
-- Dustin Kirkland <kirkland@ubuntu.com> Fri, 04 Jun 2010 16:05:03 -0500

22
usr/bin/byobu-launcher
View file

@ -19,13 +19,35 @@
if [ ! -r "$HOME/.byobu/disable-autolaunch" ]; then
if printf "$TERM" | grep -qs "screen"; then
# Handle nesting
printf "$(gettext 'Do you want to launch byobu in a nested session?') [y/N]: "
answer=$(head -n1)
if [ "$answer" = "y" ] || [ "$answer" = "Y" ]; then
# Prevent nasty launch recursion, if ssh'ing to localhost
if [ -n "$SSH_CONNECTION" ]; then
# This is an SSH session
from=$(echo "$SSH_CONNECTION" | awk '{print $1}')
to=$(echo "$SSH_CONNECTION" | awk '{print $3}')
if [ "$from" = "$to" ]; then
# We have ssh'd from this machine, to this machine
if screen -ls | grep -qs '(Attached)$'; then
# And there is already an attached screen session
# Exit to prevent recursion
false
else
exec /usr/bin/byobu "$@"
fi
else
exec /usr/bin/byobu "$@"
fi
else
exec /usr/bin/byobu "$@"
fi
else
false
fi
else
exec /usr/bin/byobu "$@"
fi
fi
false