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#!/usr/bin/env bash
LDAPSEARCH=ldapsearch
LDAP_BIND="cn=ssh,ou=services,dc=immae,dc=eu"
LDAP_PASS=$(cat /etc/ssh/ldap_password)
LDAP_HOST="ldap://ldap.immae.eu"
LDAP_BASE="dc=immae,dc=eu"
LDAP_FILTER="(memberOf=cn=users,cn=ftp,ou=services,dc=immae,dc=eu)"
handle_keys() {
uids="$1"
keys="$2"
if [ -n "$uids" ]; then
for uid in $uids; do
echo "$keys" | while read key; do
if [ -n "$key" ]; then
ssh-keygen -e -f <(echo "$key")
fi
done > /var/lib/proftpd/authorized_keys/$uid
done
fi
}
mkdir -p /var/lib/proftpd/authorized_keys
while read i; do
if [[ "$i" =~ ^dn: ]]; then
handle_keys "$uids" "$keys"
uids=""
keys=""
fi;
if [[ "$i" =~ ^uid: ]]; then
uids="$uids ${i#uid: }"
fi
if [[ "$i" =~ ^immaeSshKey: ]]; then
key="${i#immaeSshKey: }"
if [[ "$key" =~ ^ssh- ]]; then
keys="$keys
$key"
elif echo "$key" | cut -d" " -f1 | grep -q "\bftp\b"; then
keys="$keys
$(echo "$key" | cut -d" " -f2-)"
fi
fi
done < <(ldapsearch -H "$LDAP_HOST" -ZZ -LLL -D "$LDAP_BIND" -w "$LDAP_PASS" -b "$LDAP_BASE" -x -o ldif-wrap=no "$LDAP_FILTER" uid immaeSshKey)
handle_keys "$uids" "$keys"
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