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OpenLDAP slapd.d: Add or remove olcAuthzRegexp for a localuser
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#!/bin/bash | |
## | |
## OpenLDAP slapd.d: Add or remove olcAuthzRegexp for a localuser | |
## Copyright (c) 2024 SATOH Fumiyasu @ OSSTech Corp., Japan | |
## | |
## License: GNU General Public License version 3 | |
## | |
set -u | |
set -e | |
set -o pipefail || exit $? | |
export LANG=C | |
export PATH="/opt/osstech/bin:$PATH" | |
## ====================================================================== | |
ldap_opts=( | |
-H ldapi:/// | |
-Y external | |
-Q | |
) | |
ldap_search() { | |
ldapsearch "${ldap_opts[@]}" \ | |
-LLL \ | |
-o ldif-wrap=no \ | |
"$@" \ | |
|ldifunbase64 \ | |
|sed -E \ | |
-e 's/^([A-Za-z][-.;0-9A-Za-z]*): \{[0-9]+\}/\1: /' \ | |
; | |
} | |
ldap_modify() { | |
ldapmodify "${ldap_opts[@]}" \ | |
"$@" \ | |
; | |
} | |
## ====================================================================== | |
if [[ $# -gt 2 ]]; then | |
echo "Usage: $0 [USERNAME [DN]]" | |
exit 1 | |
fi | |
authz_from_username="${1-}"; ${1+shift} | |
authz_to_dn="${1-}"; ${1+shift} | |
## ====================================================================== | |
authz_regexp_a=$( | |
ldap_search \ | |
-b cn=config \ | |
-s base \ | |
'(objectClass=*)' \ | |
olcAuthzRegexp \ | |
|sed -n \ | |
-e "/^olcAuthzRegexp:/p" \ | |
; | |
) | |
if [[ -z $authz_from_username ]]; then | |
echo "$authz_regexp_a" | |
exit 0 | |
fi | |
## ---------------------------------------------------------------------- | |
uid="$(id -u "$authz_from_username")" | |
gid="$(id -g "$authz_from_username")" | |
authz_regexp_b=$( | |
echo "$authz_regexp_a" \ | |
|sed -E \ | |
-e '/^olcAuthzRegexp: "?\^gidNumber='"$gid"'\\\+uidNumber='"$uid"',cn=peercred,cn=external,cn=auth/d' \ | |
; | |
) | |
if [[ -n $authz_to_dn ]]; then | |
authz_regexp_b+=${authz_regexp_b:+$'\n'}$( | |
echo \ | |
'olcAuthzRegexp:' \ | |
' "^gidNumber='"$gid"'\+uidNumber='"$uid"',cn=peercred,cn=external,cn=auth$"' \ | |
' "'"dn:$authz_to_dn"'"' \ | |
; | |
) | |
fi | |
ldif="\ | |
dn: cn=config | |
changetype: modify | |
replace: olcAuthzRegexp | |
$authz_regexp_b${authz_regexp_b:+ | |
}- | |
" | |
echo "$ldif" \ | |
|ldap_modify \ | |
>/dev/null \ | |
; | |
exit 0 |
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