#	$OpenBSD: bsd.syspatch.mk,v 1.4 2016/11/03 14:46:48 robert Exp $
#
# Copyright (c) 2016 Robert Nagy <robert@openbsd.org>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

.include <bsd.own.mk>

ERRATA?=

# binaries used by this makefile
FETCH=		/usr/bin/ftp -Vm

# make sure to only use the original OpenBSD mirror
MIRROR=		http://ftp.openbsd.org/pub/OpenBSD/patches/${OSREV}/common

# the final name of the syspatch tarball
SYSPATCH=	syspatch-${OSrev}-${ERRATA}.tgz

# arguments used by different tools
MTREE_FILES=	/etc/mtree/4.4BSD.dist
MTREE_ARGS=	-qdep ${FAKE} -U
SIGNIFY_KEY=	/etc/signify/openbsd-${OSrev}-base.pub
PATCH_STRIP?=	-p0
PATCH_ARGS=	-d ${SRCDIR} -z .orig --forward --quiet -E ${PATCH_STRIP}

# build type defaults to src
BUILD?=		src

# miscellaneous variables
SYSPATCH_DIR=	${FAKE}/var/syspatch/${OSREV}
FAKE=		${DESTDIR}/syspatch/${ERRATA}
SRCDIR=		${BSDSRCDIR}
SUBDIR?=

_PATCH_COOKIE=	${ERRATA}/.patch_done
_BUILD_COOKIE=	${ERRATA}/.build_done
_FAKE_COOKIE=	${ERRATA}/.fake_done
_INSTALL_COOKIE=${ERRATA}/.install_done

.if ${BUILD:L:Msrc}
SRCDIR=		${BSDSRCDIR}
.elif ${BUILD:L:Mxenocara}
SRCDIR=		${X11SRC}
MTREE_FILES+=	/etc/mtree/BSD.x11.dist
.endif

.MAIN: all
all: ${_BUILD_COOKIE}

.if !target(clean)
clean:
	rm -rf .depend ${ERRATA} ${SYSPATCH}
.endif

cleandir: clean

testroot:
	@if [[ `id -u` -ne 0 ]]; then \
		{ echo "***>   $@ must be called by root"; \
		exit 1; }; \
	fi

${_FAKE_COOKIE}: testroot ${_BUILD_COOKIE}
.ifndef DESTDIR
	@{ echo "***>   setenv DESTDIR before doing that!"; \
	exit 1; };
.else
	@destmp=`df -P ${DESTDIR} | awk 'END { print $$6 }'`; \
	if ! mount | grep -q " $${destmp} .*noperm"; then \
		echo ${DESTDIR} must be on a noperm filesystem >&2; \
		false; \
	fi; \
	if [[ `stat -f '%Su %Lp' $${destmp}` != '${BUILDUSER} 700' ]]; then \
		echo $${destmp} must have owner BUILDUSER and mode 700 >&2; \
		false; \
	fi

	${INSTALL} -d -m 755 ${SYSPATCH_DIR}
	${INSTALL} ${INSTALL_COPY} -o ${SHAREOWN} -g ${SHAREGRP} -m ${SHAREMODE} \
		${ERRATA}/${ERRATA}.patch.sig ${SYSPATCH_DIR}

.for _m in ${MTREE_FILES}
	@su ${BUILDUSER} -c '/usr/sbin/mtree ${MTREE_ARGS} -f ${_m}' >/dev/null
.endfor
	@su ${BUILDUSER} -c 'touch $@'
.endif

${ERRATA}/${ERRATA}.patch:
	@su ${BUILDUSER} -c '${INSTALL} -d -m 755 ${ERRATA}' && \
	echo '>> Fetch ${MIRROR}/${.TARGET:T}.sig'; \
	if su ${BUILDUSER} -c '${FETCH} -o ${ERRATA}/${.TARGET:T}.sig \
		${MIRROR}/${.TARGET:T}.sig'; then \
		su ${BUILDUSER} -c '/usr/bin/signify -Vep ${SIGNIFY_KEY} -x \
			${ERRATA}/${.TARGET:T}.sig -m ${.TARGET}' && exit 0; \
	fi; exit 1

${_PATCH_COOKIE}: ${ERRATA}/${ERRATA}.patch
	@su ${BUILDUSER} -c '/usr/bin/patch ${PATCH_ARGS} < ${ERRATA}/${ERRATA}.patch' || \
		{ echo "***>   ${ERRATA}.patch did not apply cleanly"; \
		exit 1; };
	@su ${BUILDUSER} -c 'touch $@'

${_INSTALL_COOKIE}: ${_FAKE_COOKIE}
.if ${BUILD:L:Msrc} || ${BUILD:L:Mxenocara}
.  if defined(SUBDIR) && !empty(SUBDIR)
.    for _s in ${SUBDIR}
	@if [ -f ${_s}/Makefile.bsd-wrapper ]; then \
		_mk_spec_="-f Makefile.bsd-wrapper"; \
	fi; \
	cd ${_s} && su ${BUILDUSER} -c "/usr/bin/make $${_mk_spec_} \
		DESTDIR=${FAKE} install"
.    endfor
.  endif
.elif ${BUILD:L:Mkernel}
.  for _kern in GENERIC GENERIC.MP
	@if [ ${_kern} = "GENERIC" ]; then \
		su ${BUILDUSER} -c '${INSTALL} ${INSTALL_COPY} -o ${SHAREOWN} -g ${LOCALEGRP} \
		-m 0644 ${SRCDIR}/sys/arch/${MACHINE_ARCH}/compile/${_kern}/bsd \
		${FAKE}/bsd' || \
		{ echo "***>   failed to install ${_kern}"; \
		exit 1; }; \
	elif [ ${_kern} = "GENERIC.MP" ]; then \
		su ${BUILDUSER} -c '${INSTALL} ${INSTALL_COPY} -o ${SHAREOWN} -g ${LOCALEGRP} \
		-m 0644 ${SRCDIR}/sys/arch/${MACHINE_ARCH}/compile/${_kern}/bsd \
		${FAKE}/bsd.mp' || \
		{ echo "***>   failed to install ${_kern}"; \
		exit 1; }; \
	fi; exit 0
.  endfor
.endif
	@su ${BUILDUSER} -c 'touch $@'

.ifdef DESTDIR
${_BUILD_COOKIE}: ${_PATCH_COOKIE}
	@echo cannot build with DESTDIR set
	@false
.else
${_BUILD_COOKIE}: ${_PATCH_COOKIE}
.if ${BUILD:L:Msrc} || ${BUILD:L:Mxenocara}
.  if defined(SUBDIR) && !empty(SUBDIR)
.    for _s in ${SUBDIR}
	@if [ -f ${_s}/Makefile.bsd-wrapper ]; then \
		_mk_spec_="-f Makefile.bsd-wrapper"; \
	fi; \
	for _t in obj depend all; do \
		su ${BUILDUSER} -c "cd ${_s} && /usr/bin/make $${_mk_spec_} $${_t}"; \
	done;
.    endfor
.  endif
.elif ${BUILD:L:Mkernel}
.  for _kern in GENERIC GENERIC.MP
	@if cd ${SRCDIR}/sys/arch/${MACHINE_ARCH}/conf; then \
		if config ${_kern}; then \
			if cd ../compile/${_kern} && make; then \
				exit 0; \
			fi; exit 1; \
		fi; exit 1; \
	fi; exit 1
.  endfor
.endif
	@su ${BUILDUSER} -c 'touch $@'
.endif

syspatch: ${SYSPATCH}

${SYSPATCH}: ${ERRATA}/.plist
.for _m in ${MTREE_FILES}
	@su ${BUILDUSER} -c '/usr/sbin/mtree ${MTREE_ARGS} -f ${_m}' >/dev/null
.endfor
	@su ${BUILDUSER} -c 'tar -Pczf ${.TARGET} -C ${FAKE} -I ${ERRATA}/.plist' || \
		{ echo "***>   unable to create ${.TARGET}"; \
		exit 1; };
	@echo ">> Created ${SYSPATCH}"; \

${ERRATA}/.fplist: ${_INSTALL_COOKIE}
	@su ${BUILDUSER} -c 'find ${FAKE} \! -type d > ${.OBJDIR}/${ERRATA}/.fplist' || \
		{ echo "***>   unable to create list of files"; \
		exit 1; };

${ERRATA}/.plist: ${ERRATA}/.fplist
	@su ${BUILDUSER} -c 'for _l in $$(cat ${.OBJDIR}/${ERRATA}/.fplist); do \
		_o=$$(echo $${_l} | sed "s,${FAKE},,g"); \
		cmp -s $${_l} $${_o} || echo $${_o} | sed 's,^/,,g'; \
	done > ${.OBJDIR}/${ERRATA}/.plist'

findstatic:
.if defined(LIB) && !empty(LIB)
	@cd ${SRCDIR} && for _m in $$(find {bin,sbin} \
		\( -name Makefile -o -name Makefile.bsd-wrapper \) \
		-exec grep -l '\-l${LIB}' {} \;); do \
		echo "SUBDIR+= $$(dirname $${_m})"; \
	done
.endif

.include <bsd.obj.mk>