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# Copyright 1999-2011 Gentoo Foundation |
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# Distributed under the terms of the GNU General Public License v2 |
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# $Header: /var/cvsroot/gentoo-x86/eclass/user.eclass,v 1.17 2011/11/29 19:32:23 vapier Exp $ |
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|
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# @ECLASS: user.eclass |
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# @MAINTAINER: |
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# base-system@gentoo.org (Linux) |
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# Joe Jezak <josejx@gmail.com> (OS X) |
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# usata@gentoo.org (OS X) |
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# Aaron Walker <ka0ttic@gentoo.org> (FreeBSD) |
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# @BLURB: user management in ebuilds |
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# @DESCRIPTION: |
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# The user eclass contains a suite of functions that allow ebuilds |
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# to quickly make sure users in the installed system are sane. |
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|
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if [[ ${___ECLASS_ONCE_USER} != "recur -_+^+_- spank" ]] ; then |
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___ECLASS_ONCE_USER="recur -_+^+_- spank" |
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|
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# @FUNCTION: _assert_pkg_ebuild_phase |
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# @INTERNAL |
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# @USAGE: <calling func name> |
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_assert_pkg_ebuild_phase() { |
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case ${EBUILD_PHASE} in |
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setup|preinst|postinst) ;; |
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*) |
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eerror "'$1()' called from '${EBUILD_PHASE}' phase which is not OK:" |
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eerror "You may only call from pkg_{setup,preinst,postinst} functions." |
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eerror "Package fails at QA and at life. Please file a bug." |
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die "Bad package! $1 is only for use in some pkg_* functions!" |
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esac |
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} |
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|
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# @FUNCTION: egetent |
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# @USAGE: <database> <key> |
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# @DESCRIPTION: |
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# Small wrapper for getent (Linux), nidump (< Mac OS X 10.5), |
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# dscl (Mac OS X 10.5), and pw (FreeBSD) used in enewuser()/enewgroup(). |
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# |
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# Supported databases: group passwd |
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egetent() { |
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local db=$1 key=$2 |
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|
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[[ $# -ge 3 ]] && die "usage: egetent <database> <key>" |
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|
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case ${db} in |
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passwd|group) ;; |
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*) die "sorry, database '${db}' not yet supported; file a bug" ;; |
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esac |
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|
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case ${CHOST} in |
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*-darwin[678]) |
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case ${key} in |
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*[!0-9]*) # Non numeric |
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nidump ${db} . | awk -F: "(\$1 ~ /^${key}\$/) {print;exit;}" |
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;; |
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*) # Numeric |
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nidump ${db} . | awk -F: "(\$3 == ${key}) {print;exit;}" |
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;; |
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esac |
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;; |
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*-darwin*) |
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local mykey |
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case ${db} in |
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passwd) db="Users" mykey="UniqueID" ;; |
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group) db="Groups" mykey="PrimaryGroupID" ;; |
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esac |
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|
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case ${key} in |
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*[!0-9]*) # Non numeric |
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dscl . -read /${db}/${key} 2>/dev/null |grep RecordName |
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;; |
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*) # Numeric |
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dscl . -search /${db} ${mykey} ${key} 2>/dev/null |
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;; |
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esac |
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;; |
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*-freebsd*|*-dragonfly*) |
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case ${db} in |
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passwd) db="user" ;; |
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*) ;; |
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esac |
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|
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# lookup by uid/gid |
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local opts |
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if [[ ${key} == [[:digit:]]* ]] ; then |
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[[ ${db} == "user" ]] && opts="-u" || opts="-g" |
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fi |
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|
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pw show ${db} ${opts} "${key}" -q |
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;; |
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*-netbsd*|*-openbsd*) |
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grep "${key}:\*:" /etc/${db} |
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;; |
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*) |
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# ignore output if nscd doesn't exist, or we're not running as root |
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nscd -i "${db}" 2>/dev/null |
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getent "${db}" "${key}" |
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;; |
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esac |
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} |
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|
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# @FUNCTION: enewuser |
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# @USAGE: <user> [uid] [shell] [homedir] [groups] |
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# @DESCRIPTION: |
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# Same as enewgroup, you are not required to understand how to properly add |
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# a user to the system. The only required parameter is the username. |
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# Default uid is (pass -1 for this) next available, default shell is |
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# /bin/false, default homedir is /dev/null, and there are no default groups. |
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enewuser() { |
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_assert_pkg_ebuild_phase ${FUNCNAME} |
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|
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# get the username |
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local euser=$1; shift |
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if [[ -z ${euser} ]] ; then |
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eerror "No username specified !" |
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die "Cannot call enewuser without a username" |
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fi |
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|
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# lets see if the username already exists |
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if [[ -n $(egetent passwd "${euser}") ]] ; then |
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return 0 |
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fi |
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einfo "Adding user '${euser}' to your system ..." |
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|
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# options to pass to useradd |
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local opts=() |
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|
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# handle uid |
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local euid=$1; shift |
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if [[ -n ${euid} && ${euid} != -1 ]] ; then |
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if [[ ${euid} -gt 0 ]] ; then |
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if [[ -n $(egetent passwd ${euid}) ]] ; then |
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euid="next" |
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fi |
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else |
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eerror "Userid given but is not greater than 0 !" |
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die "${euid} is not a valid UID" |
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fi |
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else |
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euid="next" |
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fi |
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if [[ ${euid} == "next" ]] ; then |
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for ((euid = 101; euid <= 999; euid++)); do |
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[[ -z $(egetent passwd ${euid}) ]] && break |
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done |
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fi |
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opts+=( -u ${euid} ) |
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einfo " - Userid: ${euid}" |
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|
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# handle shell |
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local eshell=$1; shift |
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if [[ ! -z ${eshell} ]] && [[ ${eshell} != "-1" ]] ; then |
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if [[ ! -e ${ROOT}${eshell} ]] ; then |
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eerror "A shell was specified but it does not exist !" |
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die "${eshell} does not exist in ${ROOT}" |
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fi |
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if [[ ${eshell} == */false || ${eshell} == */nologin ]] ; then |
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eerror "Do not specify ${eshell} yourself, use -1" |
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die "Pass '-1' as the shell parameter" |
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fi |
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else |
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for eshell in /sbin/nologin /usr/sbin/nologin /bin/false /usr/bin/false /dev/null ; do |
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[[ -x ${ROOT}${eshell} ]] && break |
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done |
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|
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if [[ ${eshell} == "/dev/null" ]] ; then |
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eerror "Unable to identify the shell to use, proceeding with userland default." |
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case ${USERLAND} in |
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GNU) eshell="/bin/false" ;; |
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BSD) eshell="/sbin/nologin" ;; |
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Darwin) eshell="/usr/sbin/nologin" ;; |
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*) die "Unable to identify the default shell for userland ${USERLAND}" |
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esac |
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fi |
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fi |
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einfo " - Shell: ${eshell}" |
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opts+=( -s "${eshell}" ) |
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|
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# handle homedir |
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local ehome=$1; shift |
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if [[ -z ${ehome} ]] || [[ ${ehome} == "-1" ]] ; then |
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ehome="/dev/null" |
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fi |
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einfo " - Home: ${ehome}" |
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opts+=( -d "${ehome}" ) |
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|
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# handle groups |
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local egroups=$1; shift |
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local g egroups_arr |
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IFS="," read -r -a egroups_arr <<<"${egroups}" |
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shift |
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if [[ ${#egroups_arr[@]} -gt 0 ]] ; then |
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local defgroup exgroups |
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for g in "${egroups_arr[@]}" ; do |
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if [[ -z $(egetent group "${g}") ]] ; then |
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eerror "You must add group ${g} to the system first" |
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die "${g} is not a valid GID" |
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fi |
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if [[ -z ${defgroup} ]] ; then |
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defgroup=${g} |
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else |
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exgroups+=",${g}" |
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fi |
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done |
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opts+=( -g "${defgroup}" ) |
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if [[ ! -z ${exgroups} ]] ; then |
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opts+=( -G "${exgroups:1}" ) |
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fi |
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fi |
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einfo " - Groups: ${egroups:-(none)}" |
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|
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# handle extra args |
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if [[ $# -gt 0 ]] ; then |
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die "extra arguments no longer supported; please file a bug" |
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else |
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local comment="added by portage for ${PN}" |
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opts+=( -c "${comment}" ) |
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einfo " - GECOS: ${comment}" |
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fi |
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|
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# add the user |
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case ${CHOST} in |
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*-darwin*) |
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### Make the user |
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dscl . create "/users/${euser}" uid ${euid} |
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dscl . create "/users/${euser}" shell "${eshell}" |
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dscl . create "/users/${euser}" home "${ehome}" |
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dscl . create "/users/${euser}" realname "added by portage for ${PN}" |
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### Add the user to the groups specified |
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for g in "${egroups_arr[@]}" ; do |
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dscl . merge "/groups/${g}" users "${euser}" |
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done |
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;; |
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|
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*-freebsd*|*-dragonfly*) |
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pw useradd "${euser}" "${opts[@]}" || die |
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;; |
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|
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*-netbsd*) |
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useradd "${opts[@]}" "${euser}" || die |
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;; |
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|
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*-openbsd*) |
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# all ops the same, except the -g vs -g/-G ... |
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useradd -u ${euid} -s "${eshell}" \ |
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-d "${ehome}" -g "${egroups}" "${euser}" || die |
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;; |
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|
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*) |
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useradd -r "${opts[@]}" "${euser}" || die |
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;; |
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esac |
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|
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if [[ ! -e ${ROOT}/${ehome} ]] ; then |
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einfo " - Creating ${ehome} in ${ROOT}" |
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mkdir -p "${ROOT}/${ehome}" |
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chown "${euser}" "${ROOT}/${ehome}" |
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chmod 755 "${ROOT}/${ehome}" |
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fi |
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} |
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|
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# @FUNCTION: enewgroup |
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# @USAGE: <group> [gid] |
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# @DESCRIPTION: |
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# This function does not require you to understand how to properly add a |
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# group to the system. Just give it a group name to add and enewgroup will |
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# do the rest. You may specify the gid for the group or allow the group to |
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# allocate the next available one. |
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enewgroup() { |
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_assert_pkg_ebuild_phase ${FUNCNAME} |
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|
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# get the group |
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local egroup=$1; shift |
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if [[ -z ${egroup} ]] ; then |
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eerror "No group specified !" |
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die "Cannot call enewgroup without a group" |
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fi |
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|
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# see if group already exists |
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if [[ -n $(egetent group "${egroup}") ]] ; then |
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return 0 |
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fi |
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einfo "Adding group '${egroup}' to your system ..." |
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|
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# handle gid |
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local egid=$1; shift |
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if [[ ! -z ${egid} ]] ; then |
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if [[ ${egid} -gt 0 ]] ; then |
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if [[ -n $(egetent group ${egid}) ]] ; then |
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egid="next available; requested gid taken" |
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fi |
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else |
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eerror "Groupid given but is not greater than 0 !" |
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die "${egid} is not a valid GID" |
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fi |
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else |
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egid="next available" |
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fi |
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einfo " - Groupid: ${egid}" |
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|
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# handle extra |
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if [[ $# -gt 0 ]] ; then |
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die "extra arguments no longer supported; please file a bug" |
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fi |
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|
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# Some targets need to find the next available GID manually |
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_enewgroup_next_gid() { |
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if [[ ${egid} == *[!0-9]* ]] ; then |
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# Non numeric |
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for ((egid = 101; egid <= 999; egid++)) ; do |
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[[ -z $(egetent group ${egid}) ]] && break |
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done |
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fi |
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} |
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|
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# add the group |
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case ${CHOST} in |
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*-darwin*) |
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_enewgroup_next_gid |
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dscl . create "/groups/${egroup}" gid ${egid} |
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dscl . create "/groups/${egroup}" passwd '*' |
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;; |
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|
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*-freebsd*|*-dragonfly*) |
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_enewgroup_next_gid |
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pw groupadd "${egroup}" -g ${egid} || die |
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;; |
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|
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*-netbsd*) |
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_enewgroup_next_gid |
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groupadd -g ${egid} "${egroup}" || die |
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;; |
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|
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*) |
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local opts |
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if [[ ${egid} == *[!0-9]* ]] ; then |
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# Non numeric; let groupadd figure out a GID for us |
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opts="" |
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else |
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opts="-g ${egid}" |
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fi |
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# We specify -r so that we get a GID in the system range from login.defs |
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groupadd -r ${opts} "${egroup}" || die |
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;; |
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esac |
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} |
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|
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# @FUNCTION: egethome |
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# @USAGE: <user> |
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# @DESCRIPTION: |
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# Gets the home directory for the specified user. |
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egethome() { |
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local pos |
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|
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[[ $# -eq 1 ]] || die "usage: egethome <user>" |
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|
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case ${CHOST} in |
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*-darwin*|*-freebsd*|*-dragonfly*) |
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pos=9 |
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;; |
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*) # Linux, NetBSD, OpenBSD, etc... |
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pos=6 |
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;; |
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esac |
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|
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egetent passwd "$1" | cut -d: -f${pos} |
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} |
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|
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# @FUNCTION: egetshell |
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# @USAGE: <user> |
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# @DESCRIPTION: |
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# Gets the shell for the specified user. |
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egetshell() { |
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local pos |
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|
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[[ $# -eq 1 ]] || die "usage: egetshell <user>" |
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|
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case ${CHOST} in |
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*-darwin*|*-freebsd*|*-dragonfly*) |
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pos=10 |
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;; |
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*) # Linux, NetBSD, OpenBSD, etc... |
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pos=7 |
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;; |
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esac |
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|
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egetent passwd "$1" | cut -d: -f${pos} |
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} |
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|
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fi |
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