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authorMike Gilbert <floppym@gentoo.org>2020-02-05 15:55:14 -0500
committerMike Gilbert <floppym@gentoo.org>2020-02-06 16:40:50 -0500
commit9493cc97e52ad67a9586007271c4c2c838579e2c (patch)
tree58e9947bd199e6d77764965876e5fdc28bc9ec23 /eclass/user-info.eclass
parentapp-text/qpdf: Revbump to remove no longer needed "perl" USE flag (diff)
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user.eclass: move read-only functionality to user-info.eclass
The new eclass can be used by ebuilds to look up user information without triggering a deprecation warning from repoman and pkgcheck. Signed-off-by: Mike Gilbert <floppym@gentoo.org>
Diffstat (limited to 'eclass/user-info.eclass')
-rw-r--r--eclass/user-info.eclass158
1 files changed, 158 insertions, 0 deletions
diff --git a/eclass/user-info.eclass b/eclass/user-info.eclass
new file mode 100644
index 00000000000..ea037d54dfd
--- /dev/null
+++ b/eclass/user-info.eclass
@@ -0,0 +1,158 @@
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+# @ECLASS: user-info.eclass
+# @MAINTAINER:
+# base-system@gentoo.org (Linux)
+# Michał Górny <mgorny@gentoo.org> (NetBSD)
+# @BLURB: Read-only access to user and group information
+
+if [[ -z ${_USER_INFO_ECLASS} ]]; then
+_USER_INFO_ECLASS=1
+
+# @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().
+#
+# Supported databases: group passwd
+egetent() {
+ local db=$1 key=$2
+
+ [[ $# -ge 3 ]] && die "usage: egetent <database> <key>"
+
+ case ${db} in
+ passwd|group) ;;
+ *) die "sorry, database '${db}' not yet supported; file a bug" ;;
+ esac
+
+ case ${CHOST} in
+ *-freebsd*|*-dragonfly*)
+ case ${db} in
+ passwd) db="user" ;;
+ *) ;;
+ esac
+
+ # lookup by uid/gid
+ local opts
+ if [[ ${key} == [[:digit:]]* ]] ; then
+ [[ ${db} == "user" ]] && opts="-u" || opts="-g"
+ fi
+
+ pw show ${db} ${opts} "${key}" -q
+ ;;
+ *-openbsd*)
+ grep "${key}:\*:" /etc/${db}
+ ;;
+ *)
+ # ignore nscd output if we're not running as root
+ type -p nscd >/dev/null && nscd -i "${db}" 2>/dev/null
+ getent "${db}" "${key}"
+ ;;
+ esac
+}
+
+# @FUNCTION: egetusername
+# @USAGE: <uid>
+# @DESCRIPTION:
+# Gets the username for given UID.
+egetusername() {
+ [[ $# -eq 1 ]] || die "usage: egetusername <uid>"
+
+ egetent passwd "$1" | cut -d: -f1
+}
+
+# @FUNCTION: egetgroupname
+# @USAGE: <gid>
+# @DESCRIPTION:
+# Gets the group name for given GID.
+egetgroupname() {
+ [[ $# -eq 1 ]] || die "usage: egetgroupname <gid>"
+
+ egetent group "$1" | cut -d: -f1
+}
+
+# @FUNCTION: egethome
+# @USAGE: <user>
+# @DESCRIPTION:
+# Gets the home directory for the specified user.
+egethome() {
+ local pos
+
+ [[ $# -eq 1 ]] || die "usage: egethome <user>"
+
+ case ${CHOST} in
+ *-freebsd*|*-dragonfly*)
+ pos=9
+ ;;
+ *) # Linux, NetBSD, OpenBSD, etc...
+ pos=6
+ ;;
+ esac
+
+ egetent passwd "$1" | cut -d: -f${pos}
+}
+
+# @FUNCTION: egetshell
+# @USAGE: <user>
+# @DESCRIPTION:
+# Gets the shell for the specified user.
+egetshell() {
+ local pos
+
+ [[ $# -eq 1 ]] || die "usage: egetshell <user>"
+
+ case ${CHOST} in
+ *-freebsd*|*-dragonfly*)
+ pos=10
+ ;;
+ *) # Linux, NetBSD, OpenBSD, etc...
+ pos=7
+ ;;
+ esac
+
+ egetent passwd "$1" | cut -d: -f${pos}
+}
+
+# @FUNCTION: egetcomment
+# @USAGE: <user>
+# @DESCRIPTION:
+# Gets the comment field for the specified user.
+egetcomment() {
+ local pos
+
+ [[ $# -eq 1 ]] || die "usage: egetshell <user>"
+
+ case ${CHOST} in
+ *-freebsd*|*-dragonfly*)
+ pos=8
+ ;;
+ *) # Linux, NetBSD, OpenBSD, etc...
+ pos=5
+ ;;
+ esac
+
+ egetent passwd "$1" | cut -d: -f${pos}
+}
+
+# @FUNCTION: egetgroups
+# @USAGE: <user>
+# @DESCRIPTION:
+# Gets all the groups user belongs to. The primary group is returned
+# first, then all supplementary groups. Groups are ','-separated.
+egetgroups() {
+ [[ $# -eq 1 ]] || die "usage: egetgroups <user>"
+
+ local egroups_arr
+ read -r -a egroups_arr < <(id -G -n "$1")
+
+ local g groups=${egroups_arr[0]}
+ # sort supplementary groups to make comparison possible
+ while read -r g; do
+ [[ -n ${g} ]] && groups+=",${g}"
+ done < <(printf '%s\n' "${egroups_arr[@]:1}" | sort)
+ echo "${groups}"
+}
+
+fi