#!/bin/sh
# Add a new .gnupg home directory for a list of users -*- sh -*-
#
# Copyright 2004 Free Software Foundation, Inc.
#
# This file is free software; as a special exception the author gives
# unlimited permission to copy and/or distribute it, with or without
# modifications, as long as this notice is preserved.
#
# This file is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY, to the extent permitted by law; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

PGM=addgnupghome
any_error=0


error () {
echo "$PGM: $*" >&2
any_error=1
}

info () {
echo "$PGM: $*" >&2
}

# Do it for one user
one_user () {
user="$1"
home=$(${cat_passwd} | awk -F: -v n="$user" '$1 == n {print $6}')
if [ -z "$home" ]; then
if ${cat_passwd} | awk -F: -v n="$user" '$1 == n {exit 1}'; then
error "no such user \`$user'"
else
error "no home directory for user \`$user'"
fi
return
fi
if [ ! -d "$home" ]; then
error "home directory \`$home' of user \`$user' does not exist"
return
fi
if [ -d "$home/.gnupg" ]; then
info "skipping user \`$user': \`.gnupg' already exists"
return
fi
info "creating home directory \`$home/.gnupg' for \`$user'"
if ! mkdir "$home/.gnupg" ; then
error "error creating \`$home/.gnupg'"
return
fi

if ! chown $user "$home/.gnupg" ; then
error "error changing ownership of \`$home/.gnupg'"
return
fi

group=$(id -g "$user")
[ -z "$group" ] && group="0"

if [ "$group" -gt 0 ]; then
if ! chgrp $group "$home/.gnupg" ; then
error "error changing group of \`$home/.gnupg'"
return
fi
fi

if ! cd "$home/.gnupg" ; then
error "error cd-ing to \`$home/.gnupg'"
return
fi
for f in $filelist; do
if [ -d /etc/skel/.gnupg/$f ]; then
mkdir $f
else
cp /etc/skel/.gnupg/$f $f
fi
if ! chown $user $f ; then
error "error changing ownership of \`$f'"
return
fi
if [ "$group" -gt 0 ]; then
if ! chgrp $group "$f" ; then
error "error changing group of \`$f'"
return
fi
fi
done

}

if [ -z "$1" ]; then
echo "usage: $PGM userids"
exit 1
fi

# Check whether we can use getent
if getent --help </dev/null >/dev/null 2>&1 ; then
cat_passwd='getent passwd'
else
cat_passwd='cat /etc/passwd'
info "please note that only users from /etc/passwd are checked"
fi

if [ ! -d /etc/skel/.gnupg ]; then
error "skeleton directory \`/etc/skel/.gnupg' does not exist"
exit 1
fi
cd "/etc/skel/.gnupg" || (error "error cd-ing to \`/etc/skel/.gnupg'"; exit 1)
filelist=$(find . \( -type f -or -type d \) -not -name '*~' -not -name . -print)


if ! umask 0077 ; then
error "error setting umask"
exit 1
fi

for name in $*; do
one_user $name
done

exit $any_error