From bee95efa4317eacbde98237f7952d020cdfb5e61 Mon Sep 17 00:00:00 2001
From: Evilham <cvs@evilham.com>
Date: Mon, 9 Dec 2019 19:13:10 +0100
Subject: [PATCH] [new-type] __openldap_server

Originally developed at ungleich and improved for Open Sourcing by Evilham.
---
 cdist/conf/type/__openldap_server/man.rst     | 148 +++++++++++
 cdist/conf/type/__openldap_server/manifest    | 235 ++++++++++++++++++
 .../type/__openldap_server/parameter/boolean  |   2 +
 .../type/__openldap_server/parameter/optional |   4 +
 .../parameter/optional_multiple               |   2 +
 .../type/__openldap_server/parameter/required |   4 +
 6 files changed, 395 insertions(+)
 create mode 100644 cdist/conf/type/__openldap_server/man.rst
 create mode 100644 cdist/conf/type/__openldap_server/manifest
 create mode 100644 cdist/conf/type/__openldap_server/parameter/boolean
 create mode 100644 cdist/conf/type/__openldap_server/parameter/optional
 create mode 100644 cdist/conf/type/__openldap_server/parameter/optional_multiple
 create mode 100644 cdist/conf/type/__openldap_server/parameter/required

diff --git a/cdist/conf/type/__openldap_server/man.rst b/cdist/conf/type/__openldap_server/man.rst
new file mode 100644
index 00000000..29bbc231
--- /dev/null
+++ b/cdist/conf/type/__openldap_server/man.rst
@@ -0,0 +1,148 @@
+cdist-type__openldap_server(7)
+==============================
+
+NAME
+----
+cdist-type__openldap_server - Setup an openldap(4) server instance
+
+
+DESCRIPTION
+-----------
+This type can be used to bootstrap an LDAP environment using openldap as slapd.
+
+
+REQUIRED PARAMETERS
+-------------------
+manager-dn
+    The rootdn to set up in the directory.
+    E.g. `cn=manager,dc=ungleich,dc=ch`. See `slapd.conf(5)`.
+
+manager-password-hash
+    The password for `manager-dn` in the directory.
+    This should be valid for `slapd.conf` like `{SSHA}qV+mCs3u8Q2sCmUXT4Ybw7MebHTASMyr`.
+    Generate e.g. with: `slappasswd -s weneedgoodsecurity`.
+    See `slappasswd(8C)`, `slapd.conf(5)`.
+    TODO: implement this: http://blog.adamsbros.org/2015/06/09/openldap-ssha-salted-hashes-by-hand/
+      to allow for a manager-password parameter and ensure idempotency (care with salts).
+      Such manager-password parameter should be mutually exclusive with this one.
+
+serverid
+    The server for the directory.
+    E.g. `dc=ungleich,dc=ch`. See `slapd.conf(5)`.
+
+suffix
+    The suffix for the directory.
+    E.g. `dc=ungleich,dc=ch`. See `slapd.conf(5)`.
+
+
+OPTIONAL PARAMETERS
+-------------------
+syncrepl-credentials
+    Only has an effect if `replicate` is set; required in that case.
+    This secret is shared amongst the hosts that will replicate the directory.
+    Note that each replication server needs this secret and it is saved in
+    plain text in the directory.
+
+syncrepl-searchbase
+    Only has an effect if `replicate` is set; required in that case.
+    The searchbase to use for replication.
+    E.g. `dc=ungleich,dc=ch`. See `slapd.conf(5)`.
+
+tls-cert
+    If defined, `__letsencrypt_cert` is not used and this must be the path in
+    the remote hosts to the PEM-encoded TLS certificate.
+    Requires: `tls-privkey` and `tls-ca`.
+    Permissions, existence and renewal of these files are left up to the
+    type's user.
+
+tls-privkey
+    Required if `tls-cert` is defined.
+    Path in the remote hosts to the PEM-encoded private key file.
+
+tls-ca
+    Required if `tls-cert` is defined.
+    Path in the remote hosts to the PEM-encoded CA certificate file.
+
+
+OPTIONAL MULTIPLE PARAMETERS
+----------------------------
+syncrepl-host
+    Only has an effect if `replicate` is set; required in that case.
+    Set once per host that will replicate the directory.
+
+module
+    LDAP module to load. See `slapd.conf(5)`.
+    Default value is OS-dependent, see manifest.
+
+
+BOOLEAN PARAMETERS
+------------------
+staging
+    Passed to `cdist-type__letsencrypt_cert`; has otherwise no use.
+    Obtain a test certificate from a staging server.
+
+replicate
+    Whether to setup replication or not.
+    If present `syncrepl-credentials` and `syncrepl-host` are also required.
+
+EXAMPLES
+--------
+
+.. code-block:: sh
+
+    # Modify the ruleset on $__target_host:
+    __pf_ruleset --state present --source /my/pf/ruleset.conf
+    require="__pf_ruleset" \
+       __pf_apply
+
+    # Remove the ruleset on $__target_host (implies disabling pf(4):
+    __pf_ruleset --state absent
+    require="__pf_ruleset" \
+       __pf_apply
+
+    root@ldap-for-guacamole:~# cat ldapbase.ldif
+    dn: dc=guaca-test,dc=ungleich,dc=ch
+    objectClass: top
+    objectClass: dcObject
+    objectClass: organization
+    o: Some description
+    dc: guaca-test
+
+
+    # Sample usage:
+    #
+    # id=1
+    # for host in ldap-test1.ungleich.ch ldap-test2.ungleich.ch; do
+    #     echo "__ungleich_ldap ${host} \
+    #         --manager-dn 'cn=manager,dc=ungleich,dc=ch' \
+    #         --manager-password '{SSHA}fooo' \
+    #         --serverid '${id}' \
+    #         --staging \
+    #         --suffix 'dc=ungleich,dc=ch' \
+    #         --searchbase 'dc=ungleich,dc=ch' \
+    #         --syncrepl-credentials 'fooo' \
+    #         --syncrepl-host 'ldap-test1.ungleich.ch' \
+    #         --syncrepl-host 'ldap-test2.ungleich.ch' \
+    #         --descriptiont 'Ungleich LDAP server'" \
+    #         | cdist config -i - -v ${host}
+    #     id=$((id + 1))
+    # done
+
+
+SEE ALSO
+--------
+:strong:`cdist-type__letsencrypt_cert`\ (7)
+
+
+AUTHORS
+-------
+ungleich <foss--@--ungleich.ch>
+Evilham <contact--@--evilham.com>
+
+
+COPYING
+-------
+Copyright \(C) 2020 ungleich glarus ag. You can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation, either version 3 of the
+License, or (at your option) any later version.
diff --git a/cdist/conf/type/__openldap_server/manifest b/cdist/conf/type/__openldap_server/manifest
new file mode 100644
index 00000000..2acaaed5
--- /dev/null
+++ b/cdist/conf/type/__openldap_server/manifest
@@ -0,0 +1,235 @@
+#!/bin/sh
+
+name="${__target_host}"
+manager_dn=$(cat "${__object}/parameter/manager-dn")
+manager_password_hash=$(cat "${__object}/parameter/manager-password-hash")
+serverid=$(cat "${__object}/parameter/serverid")
+suffix=$(cat "${__object}/parameter/suffix")
+slapd_modules=$(cat "${__object}/parameter/module" || true)
+
+
+OS="$(cat "${__global}/explorer/os")"
+
+# Setup OS-dependent vars
+# TODO: treat other OS better, defaulting to Debian-like
+case "${OS}" in
+    freebsd)
+	      PKGS="openldap-server"
+	      ETC="/usr/local/etc"
+        SLAPD_DIR="/usr/local/etc/openldap"
+        SLAPD_DATA_DIR="/var/db/openldap-data"
+        SLAPD_RUN_DIR="/var/run/openldap"
+        SLAPD_MODULE_PATH="/usr/local/libexec/openldap"
+        if [ -z "${slapd_modules}" ]; then
+            # It looks like ppolicy and syncprov must be compiled
+            slapd_modules="back_mdb back_monitor"
+        fi
+        ;;
+    *)
+        PKGS="slapd ldap-utils"
+	      ETC="/etc"
+        SLAPD_DIR="/etc/ldap"
+        SLAPD_DATA_DIR="/var/lib/ldap"
+        SLAPD_RUN_DIR="/var/run/slapd"
+        SLAPD_MODULE_PATH="/usr/lib/ldap"
+        if [ -z "${slapd_modules}" ]; then
+            slapd_modules="back_mdb ppolicy syncprov back_monitor"
+        fi
+        ;;
+esac
+
+
+
+# Determine if __letsencrypt_cert is to be used and setup vars accordingly
+if [ -f "${__object}/parameter/tls-cert" ]; then
+    tls_cert=$(cat "${__object}/parameter/tls-cert")
+
+    if [ ! -f "${__object}/parameter/tls-privkey" ]; then
+        echo "When tls-cert is defined, tls-privkey is also required." >&2
+        exit 1
+    fi
+    tls_privkey=$(cat "${__object}/parameter/tls-privkey")
+
+    if [ ! -f "${__object}/parameter/tls-ca" ]; then
+        echo "When tls-cert is defined, tls-ca is also required." >&2
+        exit 1
+    fi
+    tls_ca=$(cat "${__object}/parameter/tls-ca")
+
+    _skip_letsencrypt_cert="YES"
+else
+    tls_cert="${SLAPD_DIR}/sasl2/cert.pem"
+    tls_privkey="${SLAPD_DIR}/sasl2/privkey.pem"
+    tls_ca="${SLAPD_DIR}/sasl2/chain.pem"
+fi
+
+mkdir "${__object}/files"
+ldapconf="${__object}/files/ldapconf"
+
+replication=""
+if [ -f "${__object}/parameter/replicate" ]; then
+    replication=yes
+
+    if [ ! -f "${__object}/parameter/syncrepl-searchbase" ]; then
+        echo "Requiring the searchbase for replication" >&2
+        exit 1
+    fi
+    syncrepl_searchbase=$(cat "${__object}/parameter/syncrepl-searchbase")
+
+    if [ ! -f "${__object}/parameter/syncrepl-credentials" ]; then
+        echo "Requiring credentials for replication" >&2
+        exit 1
+    fi
+
+    syncrepl_credentials=$(cat "${__object}/parameter/syncrepl-credentials")
+
+    if [ ! -f "${__object}/parameter/syncrepl-host" ]; then
+        echo "Requiring host(s) for replication" >&2
+        exit 1
+    fi
+    syncrepl_hosts=$(cat "${__object}/parameter/syncrepl-host")
+
+fi
+
+# Install required packages
+for pkg in ${PKGS}; do
+    __package ${pkg}
+done
+
+
+# TODO: Implement __start_on_boot for BSD
+require="__package/slapd" __start_on_boot slapd
+
+# TODO: treat other OS better. Defaulting to Debian-like.
+if [ "${OS}" != "freebsd" ]; then
+    require="__package/slapd" __line rm_slapd_conf \
+       --file ${ETC}/default/slapd \
+       --regex 'SLAPD_CONF=.*' \
+       --state absent
+
+    require="__package/slapd" __line rm_slapd_services \
+       --file ${ETC}/default/slapd \
+       --regex 'SLAPD_SERVICES=.*' \
+       --state absent
+
+    require="__line/rm_slapd_conf" __line add_slapd_conf \
+       --file ${ETC}/default/slapd \
+       --line 'SLAPD_CONF=${SLAPD_DIR}/slapd.conf' \
+       --state present
+
+    require="__line/rm_slapd_services" __line add_slapd_services \
+       --file ${ETC}/default/slapd \
+       --line "SLAPD_SERVICES=\"ldap://localhost/ ldap://${name}/\"" \
+       --state present
+fi
+
+
+if [ -z "${_skip_letsencrypt_cert}" ]; then
+    if [ -f "${__object}/parameter/staging" ]; then
+        staging="--staging"
+    else
+        staging=""
+    fi
+
+    __letsencrypt_cert "${name}" --admin-email technik@ungleich.ch \
+        --renew-hook "cp ${ETC}/letsencrypt/live/${name}/*.pem ${SLAPD_DIR}/sasl2 && chown -R openldap:openldap ${SLAPD_DIR}/sasl2 && service slapd restart" \
+        --automatic-renewal ${staging}
+fi
+
+require="__package/slapd" __directory ${SLAPD_DIR}/slapd.d --state absent
+
+if [ -z "${_skip_letsencrypt_cert}" ]; then
+    require="__package/slapd __letsencrypt_cert/${name}" \
+           __file ${SLAPD_DIR}/slapd.conf --owner root --group root --mode 644 \
+           --source "${ldapconf}"
+else
+    require="__package/slapd" \
+           __file ${SLAPD_DIR}/slapd.conf --owner root --group root --mode 644 \
+           --source "${ldapconf}"
+fi
+
+# Start slapd.conf
+cat << EOF > "${ldapconf}"
+pidfile ${SLAPD_RUN_DIR}/slapd.pid
+argsfile ${SLAPD_RUN_DIR}/slapd.args
+
+TLSCipherSuite NORMAL
+TLSCertificateFile ${tls_cert}
+TLSCertificateKeyFile ${tls_privkey}
+TLSCACertificateFile ${tls_ca}
+
+disallow bind_anon
+require bind
+security tls=1
+
+include ${SLAPD_DIR}/schema/corba.schema
+include ${SLAPD_DIR}/schema/core.schema
+include ${SLAPD_DIR}/schema/cosine.schema
+include ${SLAPD_DIR}/schema/duaconf.schema
+include ${SLAPD_DIR}/schema/dyngroup.schema
+include ${SLAPD_DIR}/schema/inetorgperson.schema
+include ${SLAPD_DIR}/schema/java.schema
+include ${SLAPD_DIR}/schema/misc.schema
+include ${SLAPD_DIR}/schema/nis.schema
+include ${SLAPD_DIR}/schema/openldap.schema
+include ${SLAPD_DIR}/schema/ppolicy.schema
+include ${SLAPD_DIR}/schema/collective.schema
+
+modulepath ${SLAPD_MODULE_PATH}
+EOF
+
+# Add specified modules
+for module in ${slapd_modules}; do
+    echo "moduleload ${module}.la" >> "${ldapconf}"
+done
+
+# Rest of the config
+cat << EOF >> "${ldapconf}"
+loglevel 1024
+
+database mdb
+maxsize 1073741824
+
+suffix "${suffix}"
+directory ${SLAPD_DATA_DIR}
+rootdn "${manager_dn}"
+rootpw "${manager_password_hash}"
+
+index objectClass eq,pres
+index ou,cn,mail,surname,givenname eq,pres,sub
+index uidNumber,gidNumber,loginShell eq,pres
+index uid,memberUid eq,pres,sub
+index nisMapName,nisMapEntry eq,pres,sub
+index entryCSN,entryUUID eq
+
+serverid ${serverid}
+EOF
+
+# Setup replication
+if [ "${replication}" ]; then
+    rid=1;
+    for syncrepl in ${syncrepl_hosts}; do
+    cat <<EOF >> "${ldapconf}"
+syncrepl rid=${rid}
+ provider=ldap://${syncrepl}
+ bindmethod=simple
+ starttls=yes
+ binddn="${manager_dn}"
+ credentials=${syncrepl_credentials}
+ searchbase="${syncrepl_searchbase}"
+ type=refreshAndPersist
+ retry="5 + 5 +"
+ interval=00:00:00:05
+EOF
+    rid=$((rid + 1))
+    done
+    cat <<EOF >> "${ldapconf}"
+mirrormode true
+overlay syncprov
+syncprov-checkpoint 100 5
+syncprov-sessionlog 100
+
+database monitor
+limits dn.exact="${manager_dn}" time=unlimited size=unlimited
+EOF
+fi
diff --git a/cdist/conf/type/__openldap_server/parameter/boolean b/cdist/conf/type/__openldap_server/parameter/boolean
new file mode 100644
index 00000000..45056fe9
--- /dev/null
+++ b/cdist/conf/type/__openldap_server/parameter/boolean
@@ -0,0 +1,2 @@
+staging
+replicate
diff --git a/cdist/conf/type/__openldap_server/parameter/optional b/cdist/conf/type/__openldap_server/parameter/optional
new file mode 100644
index 00000000..a9a8ab2c
--- /dev/null
+++ b/cdist/conf/type/__openldap_server/parameter/optional
@@ -0,0 +1,4 @@
+description
+syncrepl-credentials
+syncrepl-searchbase
+tls-cert
diff --git a/cdist/conf/type/__openldap_server/parameter/optional_multiple b/cdist/conf/type/__openldap_server/parameter/optional_multiple
new file mode 100644
index 00000000..107c03d9
--- /dev/null
+++ b/cdist/conf/type/__openldap_server/parameter/optional_multiple
@@ -0,0 +1,2 @@
+syncrepl-host
+module
diff --git a/cdist/conf/type/__openldap_server/parameter/required b/cdist/conf/type/__openldap_server/parameter/required
new file mode 100644
index 00000000..1ee6f219
--- /dev/null
+++ b/cdist/conf/type/__openldap_server/parameter/required
@@ -0,0 +1,4 @@
+manager-dn
+manager-password-hash
+serverid
+suffix