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# Copyright 1999-2011 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/eclass/user.eclass,v 1.3 2011/10/27 07:49:53 vapier Exp $
# @ECLASS: user.eclass
# @MAINTAINER:
# base-system@gentoo.org (Linux)
# Joe Jezak <josejx@gmail.com> (OS X)
# usata@gentoo.org (OS X)
# Aaron Walker <ka0ttic@gentoo.org> (FreeBSD)
# @BLURB: user management in ebuilds
# @DESCRIPTION:
# The user eclass contains a suite of functions that allow ebuilds
# to quickly make sure users in the installed system are sane.
# @FUNCTION: _assert_pkg_ebuild_phase
# @INTERNAL
# @USAGE: <calling func name>
_assert_pkg_ebuild_phase() {
case ${EBUILD_PHASE} in
unpack|prepare|configure|compile|test|install)
eerror "'$1()' called from '${EBUILD_PHASE}()' which is not a pkg_* function."
eerror "Package fails at QA and at life. Please file a bug."
die "Bad package! $1 is only for use in pkg_* functions!"
esac
}
# @FUNCTION: egetent
# @USAGE: <database> <key>
# @DESCRIPTION:
# Small wrapper for getent (Linux), nidump (< Mac OS X 10.5),
# dscl (Mac OS X 10.5), and pw (FreeBSD) used in enewuser()/enewgroup().
egetent() {
case ${CHOST} in
*-darwin[678])
case "$2" in
*[!0-9]*) # Non numeric
nidump $1 . | awk -F":" "{ if (\$1 ~ /^$2\$/) {print \$0;exit;} }"
;;
*) # Numeric
nidump $1 . | awk -F":" "{ if (\$3 == $2) {print \$0;exit;} }"
;;
esac
;;
*-darwin*)
local mytype=$1
[[ "passwd" == $mytype ]] && mytype="Users"
[[ "group" == $mytype ]] && mytype="Groups"
case "$2" in
*[!0-9]*) # Non numeric
dscl . -read /$mytype/$2 2>/dev/null |grep RecordName
;;
*) # Numeric
local mykey="UniqueID"
[[ $mytype == "Groups" ]] && mykey="PrimaryGroupID"
dscl . -search /$mytype $mykey $2 2>/dev/null
;;
esac
;;
*-freebsd*|*-dragonfly*)
local opts action="user"
[[ $1 == "passwd" ]] || action="group"
# lookup by uid/gid
if [[ $2 == [[:digit:]]* ]] ; then
[[ ${action} == "user" ]] && opts="-u" || opts="-g"
fi
pw show ${action} ${opts} "$2" -q
;;
*-netbsd*|*-openbsd*)
grep "$2:\*:" /etc/$1
;;
*)
# ignore output if nscd doesn't exist, or we're not running as root
nscd -i "$1" 2>/dev/null
getent "$1" "$2"
;;
esac
}
# @FUNCTION: enewuser
# @USAGE: <user> [uid] [shell] [homedir] [groups] [params]
# @DESCRIPTION:
# Same as enewgroup, you are not required to understand how to properly add
# a user to the system. The only required parameter is the username.
# Default uid is (pass -1 for this) next available, default shell is
# /bin/false, default homedir is /dev/null, there are no default groups,
# and default params sets the comment as 'added by portage for ${PN}'.
enewuser() {
_assert_pkg_ebuild_phase enewuser
# get the username
local euser=$1; shift
if [[ -z ${euser} ]] ; then
eerror "No username specified !"
die "Cannot call enewuser without a username"
fi
# lets see if the username already exists
if [[ -n $(egetent passwd "${euser}") ]] ; then
return 0
fi
einfo "Adding user '${euser}' to your system ..."
# options to pass to useradd
local opts=
# handle uid
local euid=$1; shift
if [[ -n ${euid} && ${euid} != -1 ]] ; then
if [[ ${euid} -gt 0 ]] ; then
if [[ -n $(egetent passwd ${euid}) ]] ; then
euid="next"
fi
else
eerror "Userid given but is not greater than 0 !"
die "${euid} is not a valid UID"
fi
else
euid="next"
fi
if [[ ${euid} == "next" ]] ; then
for ((euid = 101; euid <= 999; euid++)); do
[[ -z $(egetent passwd ${euid}) ]] && break
done
fi
opts="${opts} -u ${euid}"
einfo " - Userid: ${euid}"
# handle shell
local eshell=$1; shift
if [[ ! -z ${eshell} ]] && [[ ${eshell} != "-1" ]] ; then
if [[ ! -e ${ROOT}${eshell} ]] ; then
eerror "A shell was specified but it does not exist !"
die "${eshell} does not exist in ${ROOT}"
fi
if [[ ${eshell} == */false || ${eshell} == */nologin ]] ; then
eerror "Do not specify ${eshell} yourself, use -1"
die "Pass '-1' as the shell parameter"
fi
else
for shell in /sbin/nologin /usr/sbin/nologin /bin/false /usr/bin/false /dev/null ; do
[[ -x ${ROOT}${shell} ]] && break
done
if [[ ${shell} == "/dev/null" ]] ; then
eerror "Unable to identify the shell to use, proceeding with userland default."
case ${USERLAND} in
GNU) shell="/bin/false" ;;
BSD) shell="/sbin/nologin" ;;
Darwin) shell="/usr/sbin/nologin" ;;
*) die "Unable to identify the default shell for userland ${USERLAND}"
esac
fi
eshell=${shell}
fi
einfo " - Shell: ${eshell}"
opts="${opts} -s ${eshell}"
# handle homedir
local ehome=$1; shift
if [[ -z ${ehome} ]] || [[ ${ehome} == "-1" ]] ; then
ehome="/dev/null"
fi
einfo " - Home: ${ehome}"
opts="${opts} -d ${ehome}"
# handle groups
local egroups=$1; shift
if [[ ! -z ${egroups} ]] ; then
local oldifs=${IFS}
local defgroup="" exgroups=""
export IFS=","
for g in ${egroups} ; do
export IFS=${oldifs}
if [[ -z $(egetent group "${g}") ]] ; then
eerror "You must add group ${g} to the system first"
die "${g} is not a valid GID"
fi
if [[ -z ${defgroup} ]] ; then
defgroup=${g}
else
exgroups="${exgroups},${g}"
fi
export IFS=","
done
export IFS=${oldifs}
opts="${opts} -g ${defgroup}"
if [[ ! -z ${exgroups} ]] ; then
opts="${opts} -G ${exgroups:1}"
fi
else
egroups="(none)"
fi
einfo " - Groups: ${egroups}"
# handle extra and add the user
local oldsandbox=${SANDBOX_ON}
export SANDBOX_ON="0"
case ${CHOST} in
*-darwin*)
### Make the user
if [[ -z $@ ]] ; then
dscl . create /users/${euser} uid ${euid}
dscl . create /users/${euser} shell ${eshell}
dscl . create /users/${euser} home ${ehome}
dscl . create /users/${euser} realname "added by portage for ${PN}"
### Add the user to the groups specified
local oldifs=${IFS}
export IFS=","
for g in ${egroups} ; do
dscl . merge /groups/${g} users ${euser}
done
export IFS=${oldifs}
else
einfo "Extra options are not supported on Darwin yet"
einfo "Please report the ebuild along with the info below"
einfo "eextra: $@"
die "Required function missing"
fi
;;
*-freebsd*|*-dragonfly*)
if [[ -z $@ ]] ; then
pw useradd ${euser} ${opts} \
-c "added by portage for ${PN}" \
die "enewuser failed"
else
einfo " - Extra: $@"
pw useradd ${euser} ${opts} \
"$@" || die "enewuser failed"
fi
;;
*-netbsd*)
if [[ -z $@ ]] ; then
useradd ${opts} ${euser} || die "enewuser failed"
else
einfo " - Extra: $@"
useradd ${opts} ${euser} "$@" || die "enewuser failed"
fi
;;
*-openbsd*)
if [[ -z $@ ]] ; then
useradd -u ${euid} -s ${eshell} \
-d ${ehome} -c "Added by portage for ${PN}" \
-g ${egroups} ${euser} || die "enewuser failed"
else
einfo " - Extra: $@"
useradd -u ${euid} -s ${eshell} \
-d ${ehome} -c "Added by portage for ${PN}" \
-g ${egroups} ${euser} "$@" || die "enewuser failed"
fi
;;
*)
if [[ -z $@ ]] ; then
useradd -r ${opts} \
-c "added by portage for ${PN}" \
${euser} \
|| die "enewuser failed"
else
einfo " - Extra: $@"
useradd -r ${opts} "$@" \
${euser} \
|| die "enewuser failed"
fi
;;
esac
if [[ ! -e ${ROOT}/${ehome} ]] ; then
einfo " - Creating ${ehome} in ${ROOT}"
mkdir -p "${ROOT}/${ehome}"
chown ${euser} "${ROOT}/${ehome}"
chmod 755 "${ROOT}/${ehome}"
fi
export SANDBOX_ON=${oldsandbox}
}
# @FUNCTION: enewgroup
# @USAGE: <group> [gid]
# @DESCRIPTION:
# This function does not require you to understand how to properly add a
# group to the system. Just give it a group name to add and enewgroup will
# do the rest. You may specify the gid for the group or allow the group to
# allocate the next available one.
enewgroup() {
_assert_pkg_ebuild_phase enewgroup
# get the group
local egroup="$1"; shift
if [ -z "${egroup}" ]
then
eerror "No group specified !"
die "Cannot call enewgroup without a group"
fi
# see if group already exists
if [[ -n $(egetent group "${egroup}") ]]; then
return 0
fi
einfo "Adding group '${egroup}' to your system ..."
# options to pass to useradd
local opts=
# handle gid
local egid="$1"; shift
if [ ! -z "${egid}" ]
then
if [ "${egid}" -gt 0 ]
then
if [ -z "`egetent group ${egid}`" ]
then
if [[ "${CHOST}" == *-darwin* ]]; then
opts="${opts} ${egid}"
else
opts="${opts} -g ${egid}"
fi
else
egid="next available; requested gid taken"
fi
else
eerror "Groupid given but is not greater than 0 !"
die "${egid} is not a valid GID"
fi
else
egid="next available"
fi
einfo " - Groupid: ${egid}"
# handle extra
local eextra="$@"
opts="${opts} ${eextra}"
# add the group
local oldsandbox="${SANDBOX_ON}"
export SANDBOX_ON="0"
case ${CHOST} in
*-darwin*)
if [ ! -z "${eextra}" ];
then
einfo "Extra options are not supported on Darwin/OS X yet"
einfo "Please report the ebuild along with the info below"
einfo "eextra: ${eextra}"
die "Required function missing"
fi
# If we need the next available
case ${egid} in
*[!0-9]*) # Non numeric
for ((egid = 101; egid <= 999; egid++)); do
[[ -z $(egetent group ${egid}) ]] && break
done
esac
dscl . create /groups/${egroup} gid ${egid}
dscl . create /groups/${egroup} passwd '*'
;;
*-freebsd*|*-dragonfly*)
case ${egid} in
*[!0-9]*) # Non numeric
for ((egid = 101; egid <= 999; egid++)); do
[[ -z $(egetent group ${egid}) ]] && break
done
esac
pw groupadd ${egroup} -g ${egid} || die "enewgroup failed"
;;
*-netbsd*)
case ${egid} in
*[!0-9]*) # Non numeric
for ((egid = 101; egid <= 999; egid++)); do
[[ -z $(egetent group ${egid}) ]] && break
done
esac
groupadd -g ${egid} ${egroup} || die "enewgroup failed"
;;
*)
# We specify -r so that we get a GID in the system range from login.defs
groupadd -r ${opts} ${egroup} || die "enewgroup failed"
;;
esac
export SANDBOX_ON="${oldsandbox}"
}
# Gets the home directory for the specified user
# it's a wrap around egetent as the position of the home directory in the line
# varies depending on the os used.
#
# To use that, inherit eutils, not portability!
egethome() {
local pos
case ${CHOST} in
*-darwin*|*-freebsd*|*-dragonfly*)
pos=9
;;
*) # Linux, NetBSD, OpenBSD, etc...
pos=6
;;
esac
egetent passwd $1 | cut -d: -f${pos}
}
# Gets the shell for the specified user
# it's a wrap around egetent as the position of the home directory in the line
# varies depending on the os used.
#
# To use that, inherit eutils, not portability!
egetshell() {
local pos
case ${CHOST} in
*-darwin*|*-freebsd*|*-dragonfly*)
pos=10
;;
*) # Linux, NetBSD, OpenBSD, etc...
pos=7
;;
esac
egetent passwd "$1" | cut -d: -f${pos}
}
# Returns true if specified user has a shell that precludes logins
# on whichever operating system.
is-login-disabled() {
case $(egetshell "$1") in
/bin/false|/usr/bin/false|/sbin/nologin|/usr/sbin/nologin)
return 0 ;;
*)
return 1 ;;
esac
}
|