################################################################################
#
# pppd
#
################################################################################

PPPD_VERSION = 2.4.8
PPPD_SITE = $(call github,paulusmack,ppp,ppp-$(PPPD_VERSION))
PPPD_LICENSE = LGPL-2.0+, LGPL, BSD-4-Clause, BSD-3-Clause, GPL-2.0+
PPPD_LICENSE_FILES = \
	pppd/tdb.c pppd/plugins/pppoatm/COPYING \
	pppdump/bsd-comp.c pppd/ccp.c pppd/plugins/passprompt.c
PPPD_CPE_ID_VENDOR = samba
PPPD_CPE_ID_PRODUCT = ppp

# 0001-pppd-Fix-bounds-check.patch
PPPD_IGNORE_CVES += CVE-2020-8597

PPPD_MAKE_OPTS = HAVE_INET6=y
ifeq ($(BR2_TOOLCHAIN_USES_GLIBC),y)
PPPD_DEPENDENCIES += openssl
else
PPPD_MAKE_OPTS += USE_CRYPT=y
endif

PPPD_INSTALL_STAGING = YES
PPPD_TARGET_BINS = chat pppd pppdump pppstats
PPPD_RADIUS_CONF = \
	dictionary dictionary.ascend dictionary.compat \
	dictionary.merit dictionary.microsoft \
	issue port-id-map realms servers radiusclient.conf

ifeq ($(BR2_PACKAGE_PPPD_FILTER),y)
PPPD_DEPENDENCIES += libpcap
PPPD_MAKE_OPTS += FILTER=y
endif

# pppd bundles some but not all of the needed kernel headers. The embedded
# if_pppol2tp.h is unfortunately not compatible with kernel headers > 2.6.34,
# and has been part of the kernel headers since 2.6.23, so drop it
define PPPD_DROP_INTERNAL_IF_PPOL2TP_H
	$(RM) $(@D)/include/linux/if_pppol2tp.h
endef

PPPD_POST_EXTRACT_HOOKS += PPPD_DROP_INTERNAL_IF_PPOL2TP_H

# pppd defaults to /etc/ppp/resolv.conf, which not be writable and is
# definitely not useful since the C library only uses
# /etc/resolv.conf. Therefore, we change pppd to use /etc/resolv.conf
# instead.
define PPPD_SET_RESOLV_CONF
	$(SED) 's,ppp/resolv.conf,resolv.conf,' $(@D)/pppd/pathnames.h
endef
ifeq ($(BR2_PACKAGE_PPPD_OVERWRITE_RESOLV_CONF),y)
PPPD_POST_EXTRACT_HOOKS += PPPD_SET_RESOLV_CONF
endif

define PPPD_CONFIGURE_CMDS
	$(SED) 's/FILTER=y/#FILTER=y/' $(PPPD_DIR)/pppd/Makefile.linux
	$(SED) 's/ifneq ($$(wildcard \/usr\/include\/pcap-bpf.h),)/ifdef FILTER/' $(PPPD_DIR)/*/Makefile.linux
	( cd $(@D); $(TARGET_MAKE_ENV) ./configure --prefix=/usr )
endef

define PPPD_BUILD_CMDS
	$(TARGET_MAKE_ENV) $(MAKE) CC="$(TARGET_CC)" COPTS="$(TARGET_CFLAGS)" \
		-C $(@D) $(PPPD_MAKE_OPTS)
endef

ifeq ($(BR2_PACKAGE_PPPD_RADIUS),y)
define PPPD_INSTALL_RADIUS
	$(INSTALL) -D $(PPPD_DIR)/pppd/plugins/radius/radattr.so \
		$(TARGET_DIR)/usr/lib/pppd/$(PPPD_VERSION)/radattr.so
	$(INSTALL) -D $(PPPD_DIR)/pppd/plugins/radius/radius.so \
		$(TARGET_DIR)/usr/lib/pppd/$(PPPD_VERSION)/radius.so
	$(INSTALL) -D $(PPPD_DIR)/pppd/plugins/radius/radrealms.so \
		$(TARGET_DIR)/usr/lib/pppd/$(PPPD_VERSION)/radrealms.so
	for m in $(PPPD_RADIUS_CONF); do \
		$(INSTALL) -m 644 -D $(PPPD_DIR)/pppd/plugins/radius/etc/$$m \
			$(TARGET_DIR)/etc/ppp/radius/$$m; \
	done
	$(SED) 's:/usr/local/etc:/etc:' \
		$(TARGET_DIR)/etc/ppp/radius/radiusclient.conf
	$(SED) 's:/usr/local/sbin:/usr/sbin:' \
		$(TARGET_DIR)/etc/ppp/radius/radiusclient.conf
	$(SED) 's:/etc/radiusclient:/etc/ppp/radius:g' \
		$(TARGET_DIR)/etc/ppp/radius/*
endef
endif

define PPPD_INSTALL_TARGET_CMDS
	for sbin in $(PPPD_TARGET_BINS); do \
		$(INSTALL) -D $(PPPD_DIR)/$$sbin/$$sbin \
			$(TARGET_DIR)/usr/sbin/$$sbin; \
	done
	$(INSTALL) -D $(PPPD_DIR)/pppd/plugins/minconn.so \
		$(TARGET_DIR)/usr/lib/pppd/$(PPPD_VERSION)/minconn.so
	$(INSTALL) -D $(PPPD_DIR)/pppd/plugins/passprompt.so \
		$(TARGET_DIR)/usr/lib/pppd/$(PPPD_VERSION)/passprompt.so
	$(INSTALL) -D $(PPPD_DIR)/pppd/plugins/passwordfd.so \
		$(TARGET_DIR)/usr/lib/pppd/$(PPPD_VERSION)/passwordfd.so
	$(INSTALL) -D $(PPPD_DIR)/pppd/plugins/pppoatm/pppoatm.so \
		$(TARGET_DIR)/usr/lib/pppd/$(PPPD_VERSION)/pppoatm.so
	$(INSTALL) -D $(PPPD_DIR)/pppd/plugins/rp-pppoe/rp-pppoe.so \
		$(TARGET_DIR)/usr/lib/pppd/$(PPPD_VERSION)/rp-pppoe.so
	$(INSTALL) -D $(PPPD_DIR)/pppd/plugins/rp-pppoe/pppoe-discovery \
		$(TARGET_DIR)/usr/sbin/pppoe-discovery
	$(INSTALL) -D $(PPPD_DIR)/pppd/plugins/winbind.so \
		$(TARGET_DIR)/usr/lib/pppd/$(PPPD_VERSION)/winbind.so
	$(INSTALL) -D $(PPPD_DIR)/pppd/plugins/pppol2tp/openl2tp.so \
		$(TARGET_DIR)/usr/lib/pppd/$(PPPD_VERSION)/openl2tp.so
	$(INSTALL) -D $(PPPD_DIR)/pppd/plugins/pppol2tp/pppol2tp.so \
		$(TARGET_DIR)/usr/lib/pppd/$(PPPD_VERSION)/pppol2tp.so
	$(INSTALL) -D -m 0755 $(PPPD_DIR)/scripts/pon $(TARGET_DIR)/usr/bin/pon
	$(INSTALL) -D -m 0755 $(PPPD_DIR)/scripts/poff $(TARGET_DIR)/usr/bin/poff
	$(PPPD_INSTALL_RADIUS)
endef

define PPPD_INSTALL_STAGING_CMDS
	$(TARGET_MAKE_ENV) $(MAKE) INSTROOT=$(STAGING_DIR)/ -C $(@D) $(PPPD_MAKE_OPTS) install-devel
endef

$(eval $(generic-package))
