add LDAP backend support to net/isc-dhcp3-server

	with some modifications to the port itself and utilizing a
	patch from Brian Masney (http://www.newwave.net/~masneyb/)
	it is possible to use an LDAP backend to store the configuration
	for dhcpd, the different network and host entries. dynamic
	leases are also written to the LDAP backend.

	this is very useful in a dhcp failover environment, as it
	is no longer necessary to sync the dhcpd.conf file manually
	to the backup system if one has changed something on the
	dhcp master.  two lookup methods are implemented.

	- static lookup:
		on dhcpd startup one LDAP lookup for all entries is done.
		no further lookups will be made.
		dhcpd must be restarted for every configuration change.
	- dynamic lookup:
		for every client request an LDAP lookup will be made.
		every configuration change kicks in when the next
		client request is recieved and the lookup is made.

PR:		ports/71030
Submitted by:	Joerg Pulz <Joerg.Pulz@frm2.tum.de>
Approved by:	Cyrille Lefevre

4 files changed, 70 insertions, 7 deletions

diff --git a/net/isc-dhcp40-server/Makefile b/net/isc-dhcp40-server/Makefile
index 0e20536b3400..356c96af4b64 100644
--- a/net/isc-dhcp40-server/Makefile
+++ b/net/isc-dhcp40-server/Makefile
@@ -8,7 +8,7 @@
 
 PORTNAME=	dhcp
 PORTVERSION=	3.0.1.r14
-PORTREVISION=	3
+PORTREVISION=	4
 CATEGORIES=	net
 MASTER_SITES=	${MASTER_SITE_ISC}
 MASTER_SITE_SUBDIR=	dhcp dhcp/dhcp-3.0-history
@@ -30,11 +30,31 @@ OPTIONS=	INTERFACE_POLLING "interface polling support" on
 .endif
 .if ${SUBSYS} == server
 OPTIONS=	DHCP_PARANOIA "add -user, -group and -chroot options" on \
-		DHCP_JAIL "add -chroot and -jail options" on
+		DHCP_JAIL "add -chroot and -jail options" on \
+		DHCP_LDAP "add experimental LDAP backend support" off \
+		DHCP_LDAP_SSL "support LDAP connection over SSL/TLS" on \
+		OPENSSL_BASE "use the base system OpenSSL (required by TLS)" on \
+		OPENSSL_PORT "use OpenSSL from ports (requires by TLS)" off
 .endif
 
 .include <bsd.port.pre.mk>
 
+.if ${SUBSYS} == server && defined(WITH_DHCP_LDAP)
+# Based on patch from Brian Masney :
+PATCH_SITES=	http://www.newwave.net/~masneyb/
+PATCHFILES=	${PORTNAME}-${RELEASE}${VERSION}${PATCHLEVEL}-ldap-patch
+PATCH_DIST_STRIP=	-p1
+
+USE_PERL5_RUN=	yes
+USE_OPENLDAP=	yes
+
+.if !defined(WITHOUT_DHCP_LDAP_SSL)
+USE_OPENSSL=	yes
+# hack to get bsd.openssl.mk included at this late state
+.include "${PORTSDIR}/Mk/bsd.openssl.mk"
+.endif
+.endif
+
 # Global variables
 #
 
@@ -102,6 +122,9 @@ PATCH_SUBDIRS+=	${SUBSYS}
 PATCH_SUBDIRS+=	omshell
 .endif
 
+.if !defined(NOPORTDOCS)
+PORTDOCS=	LICENSE README RELNOTES
+.endif
 .if ${SUBSYS} == client
 BIN_FILES=	dhclient
 CONF_FILES=	dhclient.conf
@@ -112,21 +135,30 @@ BIN_FILES=	dhcpd omshell
 RC_FILES=	isc-dhcpd
 SAMP_FILES=	server/dhcpd.conf
 DATA_FILES=	dhcpd.leases
+.if defined(WITH_DHCP_LDAP)
+PORTDOCS+=	README.ldap
+LDAP_SCRIPT=	contrib/dhcpd-conf-to-ldap.pl
+LDAP_SCHEMA=	contrib/dhcp.schema
+.endif
 .elif ${SUBSYS} == relay
 BIN_FILES=	dhcrelay
 RC_FILES=	isc-dhcrelay
 .endif
-.if !defined(NOPORTDOCS)
-PORTDOCS=	LICENSE README RELNOTES
-.endif
 
 SAMP_SUFX=	.sample
 
 CONF_DIR=	${PREFIX}/etc
 RC_DIR=		${PREFIX}/etc/rc.d
+SCHEMA_DIR=	${PREFIX}/share/${PKGBASE}
 DOCSDIR=	${PREFIX}/share/doc/${PKGBASE}
 DATADIR=	/var/db
 
+PLIST_SUB+=	SCHEMA_DIR="${SCHEMA_DIR:S,^${PREFIX}/,,}"
+.if defined(WITH_DHCP_LDAP)
+PLIST_SUB+=	LDAP=""
+.else
+PLIST_SUB+=	LDAP="@comment "
+.endif
 REINPLACE_SUB=	PREFIX=${PREFIX}
 RCSCRIPTS_SUB=	PREFIX=${PREFIX} RC_SUBR=${RC_SUBR}
 .if !defined(WITHOUT_DHCP_PARANOIA)
@@ -139,7 +171,8 @@ RCSCRIPTS_SUB+=	JAIL=YES
 .else
 RCSCRIPTS_SUB+=	JAIL=NO
 .endif
-PKGMESSAGE_SUB=	PREFIX=${PREFIX} MAN1PREFIX=${MAN1PREFIX}
+PKGMESSAGE_SUB=	PREFIX="${PREFIX}" MAN1PREFIX="${MAN1PREFIX}" \
+		DOCSDIR="${DOCSDIR}" SCHEMA_DIR="${SCHEMA_DIR}"
 
 # Post-extract
 #
@@ -179,6 +212,15 @@ patch-site-conf:
 .if !defined(WITHOUT_DHCP_JAIL)
 	@${ECHO_CMD} CFLAGS += -DJAIL >> ${WRKSRC}/site.conf
 .endif
+.if defined(WITH_DHCP_LDAP)
+	@${ECHO_CMD} CFLAGS += -I${LOCALBASE}/include >> ${WRKSRC}/site.conf
+	@${ECHO_CMD} LIBS += -L${LOCALBASE}/lib >> ${WRKSRC}/site.conf
+.if !defined(WITHOUT_DHCP_LDAP_SSL)
+	@${ECHO_CMD} CFLAGS += -DUSE_SSL -I${OPENSSLINC} >> ${WRKSRC}/site.conf
+	@${ECHO_CMD} LIBS += -L${OPENSSLLIB} >> ${WRKSRC}/site.conf
+	@${ECHO_CMD} LIBS += -lcrypto -lssl >> ${WRKSRC}/site.conf
+.endif
+.endif
 .endif
 
 patch-makefile-conf:
@@ -205,6 +247,11 @@ patch-pkgmessage:
 .if ${SUBSYS} != devel
 	@${SED} ${PKGMESSAGE_SUB:S/$/!g/:S/^/ -e s!%%/:S/=/%%!/} \
 		${MSG_FILE} > ${PKGMESSAGE}
+.if defined(WITH_DHCP_LDAP)
+	@${REINPLACE_CMD} -e 's|^%%LDAP%%||g' ${PKGMESSAGE}
+.else
+	@${REINPLACE_CMD} -e '/^%%LDAP%%/d' ${PKGMESSAGE}
+.endif
 .endif
 
 # Post-install
@@ -216,7 +263,7 @@ post-install: ${POST-INSTALL}
 
 parallel-post-install: \
 	strip-binary-files install-startup-files \
-	install-doc-files install-sample-files \
+	install-doc-files install-ldap-files install-sample-files \
 	create-conf-files create-data-files
 
 strip-binary-files:
@@ -242,6 +289,13 @@ install-doc-files:
 .endfor
 .endif
 
+install-ldap-files:
+.if ${SUBSYS} == server && defined(WITH_DHCP_LDAP)
+	@${INSTALL_SCRIPT} ${WRKSRC}/${LDAP_SCRIPT} ${PREFIX}/bin
+	@${MKDIR} ${SCHEMA_DIR}
+	@${INSTALL_DATA} ${WRKSRC}/${LDAP_SCHEMA} ${SCHEMA_DIR}
+.endif
+
 install-sample-files:
 .for f in ${SAMP_FILES}
 	@${INSTALL_DATA} ${WRKSRC}/${f} ${CONF_DIR}/${f:T}${SAMP_SUFX}
diff --git a/net/isc-dhcp40-server/distinfo b/net/isc-dhcp40-server/distinfo
index 1ee059a05367..e42d8e2eb341 100644
--- a/net/isc-dhcp40-server/distinfo
+++ b/net/isc-dhcp40-server/distinfo
@@ -1,2 +1,4 @@
 MD5 (dhcp-3.0.1rc14.tar.gz) = a68074d9ebdeb355c293d9b3645b3c2c
 SIZE (dhcp-3.0.1rc14.tar.gz) = 842712
+MD5 (dhcp-3.0.1rc14-ldap-patch) = 38fde70e0f27758da2be70ce46c17f8b
+SIZE (dhcp-3.0.1rc14-ldap-patch) = 152494
diff --git a/net/isc-dhcp40-server/pkg-message b/net/isc-dhcp40-server/pkg-message
index facfe5ba8528..e5b4fa10c0f6 100644
--- a/net/isc-dhcp40-server/pkg-message
+++ b/net/isc-dhcp40-server/pkg-message
@@ -39,3 +39,7 @@
       variables are still read there but should be moved /etc/rc.conf or
       /etc/rc.conf.d/dhcpd instead.  Also, the dhcpd_options variable must
       be renamed dhcpd_flags if any.
+%%LDAP%%
+%%LDAP%%****  You have requested support for the LDAP configuration backend.
+%%LDAP%%      The OpenLDAP schema file is installed as %%SCHEMA_DIR%%/dhcp.schema.
+%%LDAP%%      See %%DOCSDIR%%/README.ldap for further LDAP configuration details.
diff --git a/net/isc-dhcp40-server/pkg-plist b/net/isc-dhcp40-server/pkg-plist
index c8b584241dbf..3daff57c0e42 100644
--- a/net/isc-dhcp40-server/pkg-plist
+++ b/net/isc-dhcp40-server/pkg-plist
@@ -1,5 +1,8 @@
 @comment $FreeBSD$
 bin/omshell
+%%LDAP%%bin/dhcpd-conf-to-ldap.pl
 etc/dhcpd.conf.sample
 etc/rc.d/isc-dhcpd.sh
 sbin/dhcpd
+%%LDAP%%%%SCHEMA_DIR%%/dhcp.schema
+%%LDAP%%@dirrm %%SCHEMA_DIR%%