forked from ungleich-public/cdist
144 lines
3.9 KiB
Bash
Executable File
144 lines
3.9 KiB
Bash
Executable File
#!/bin/sh -e
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#
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# 2018 Ander Punnar (ander-at-kvlt-dot-ee)
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#
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# This file is part of cdist.
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#
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# cdist is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# cdist is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with cdist. If not, see <http://www.gnu.org/licenses/>.
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#
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file_is="$( cat "$__object/explorer/file_is" )"
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if [ "$file_is" = 'missing' ] \
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&& [ -z "$__cdist_dry_run" ] \
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&& [ ! -f "$__object/parameter/file" ] \
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&& [ ! -f "$__object/parameter/directory" ]
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then
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exit 0
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fi
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os="$( cat "$__global/explorer/os" )"
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acl_path="/$__object_id"
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acl_is="$( cat "$__object/explorer/acl_is" )"
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if [ -f "$__object/parameter/source" ]
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then
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acl_source="$( cat "$__object/parameter/source" )"
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if [ "$acl_source" = '-' ]
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then
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acl_should="$( cat "$__object/stdin" )"
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else
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acl_should="$( grep -Ev '^#|^$' "$acl_source" )"
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fi
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elif [ -f "$__object/parameter/entry" ]
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then
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acl_should="$( cat "$__object/parameter/entry" )"
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else
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echo 'no parameters set' >&2
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exit 1
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fi
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# instead of setfacl's non-helpful message "Option -m: Invalid argument near character X"
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# let's check if target has necessary users and groups, since mistyped or missing
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# users/groups in target is most common reason.
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echo "$acl_should" \
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| grep -Po '(user|group):[^:]+' \
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| sort -u \
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| while read -r l
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do
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if ! grep "$l" -Fxq "$__object/explorer/getent"
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then
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echo "no $l' in target" | sed "s/:/ '/" >&2
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exit 1
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fi
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done
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if [ -f "$__object/parameter/default" ]
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then
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acl_should="$( echo "$acl_should" \
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| sed 's/^default://' \
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| sort -u \
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| sed 's/\(.*\)/default:\1\n\1/' )"
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fi
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if [ "$file_is" = 'regular' ] \
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&& echo "$acl_should" | grep -Eq '^default:'
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then
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# only directories can have default ACLs,
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# but instead of error,
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# let's just remove default entries
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acl_should="$( echo "$acl_should" | grep -Ev '^default:' )"
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fi
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if echo "$acl_should" | awk -F: '{ print $NF }' | grep -Fq 'X'
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then
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[ "$file_is" = 'directory' ] && rep=x || rep=-
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acl_should="$( echo "$acl_should" | sed "s/\\(.*\\)X/\\1$rep/" )"
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fi
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setfacl_exec='setfacl'
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if [ -f "$__object/parameter/recursive" ]
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then
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if echo "$os" | grep -Fq 'freebsd'
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then
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echo "$os setfacl do not support recursive operations" >&2
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else
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setfacl_exec="$setfacl_exec -R"
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fi
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fi
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if [ -f "$__object/parameter/remove" ]
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then
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echo "$acl_is" | while read -r acl
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do
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# skip wanted ACL entries which already exist
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# and skip mask and other entries, because we
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# can't actually remove them, but only change.
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if echo "$acl_should" | grep -Eq "^$acl" \
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|| echo "$acl" | grep -Eq '^(default:)?(mask|other)'
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then continue
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fi
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if echo "$os" | grep -Fq 'freebsd'
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then
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remove="$acl"
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else
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remove="$( echo "$acl" | sed 's/:...$//' )"
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fi
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echo "$setfacl_exec -x \"$remove\" \"$acl_path\""
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echo "removed '$remove'" >> "$__messages_out"
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done
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fi
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for acl in $acl_should
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do
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if ! echo "$acl_is" | grep -Eq "^$acl"
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then
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if echo "$os" | grep -Fq 'freebsd' \
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&& echo "$acl" | grep -Eq '^default:'
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then
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echo "setting default ACL in $os is currently not supported" >&2
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else
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echo "$setfacl_exec -m \"$acl\" \"$acl_path\""
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echo "added '$acl'" >> "$__messages_out"
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fi
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fi
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done
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