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# -*- shell-script -*-
# gates-of-tartaros – Minimal replacement for agetty with SSH support
#
# Copyright © 2013, 2014, 2015 Mattias Andrée (maandree@member.fsf.org)
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# Module for using the /etc/issue file however
# only partially implemented, but also extended
_display ()
{
if [ ! -f "/etc/issue.default" ] || [ ! "$(md5sum < "/etc/issue.default")" = "$(md5sum < "/etc/issue")" ]; then
python3 <<EOF
buf = "\\033[H\\033[2J"
data = None
with open("/etc/issue", "rb") as f:
data = f.read().decode("utf-8", "replace")
esc = False
for c in data:
if esc:
esc = False
if c in "eE": buf += "\\033"
elif c == "N": buf += "\\n"
elif c == "T": buf += "\\t"
elif c == "s": buf += "$(uname -s)"
elif c == "n": buf += "$(uname -n)"
elif c == "r": buf += "$(uname -r)"
elif c == "v": buf += "$(uname -v)"
elif c == "m": buf += "$(uname -m)"
elif c == "o": buf += "$(hostname -y)"
elif c == "O": buf += "$(hostname -d)"
elif c == "d": buf += "$(date +%Y-%m-%d)"
elif c == "t": buf += "$(date +%H:%M:%S)"
elif c == "l": buf += "${tty}"
elif c == "b": buf += "$(stty | grep -Po 'speed [^ ]* baud;' | cut -d ' ' -f 2)"
elif c == "u": buf += "$(who | wc -l)"
elif c == "U": buf += "$(n=$(who | wc -l) ; echo $n $(echo $n | sed -e 's/^1$/user/' -e 's/^[0-9]\+$/users/'))"
elif c == "4": buf += "$(ifconfig | grep '^ *inet ' | grep -Po 'inet [^ ]*' | cut -d ' ' -f 2 | sed 1q)"
elif c == "6": buf += "$(ifconfig | grep '^ *inet6 ' | grep -Po 'inet6 [^ ]*' | cut -d ' ' -f 2 | sed 1q)"
else:
buf += c
elif c == "\\\\":
esc = True
else:
buf += c
print(buf, end = "", flush = True)
EOF
echo
echo -n 'Login: '
fi
}
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