#!/usr/bin/make -f
SHELL = /bin/sh -e

# Fast version of dpkg/architecture.mk defining all vars in one go
ifeq (${DEB_HOST_MULTIARCH},)
   $(foreach d, $(shell dpkg-architecture | sed 's/=/?=/'), $(eval export $d))
endif

export DEB_BUILD_MAINT_OPTIONS = hardening=+all

# build is done in bin/default/ subdir
DEB_CFLAGS_MAINT_APPEND = -ffile-prefix-map=../../=

ifneq (,$(filter armel mipsel m68k powerpc sh4,${DEB_HOST_ARCH}))
# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81358
# on these platforms gcc does not link with -latomic, resulting in
#   third_party/heimdal/lib/krb5/krcache.c.55.o: in function `krcc_get_principal':
#   third_party/heimdal/lib/krb5/krcache.c:1395: undefined reference to `__atomic_load_8'
#     ids.krcu_cache_and_princ_id = heim_base_atomic_load(&data->krc_cache_and_principal_id);
#   third_party/heimdal/lib/base/heimbase-atomics.h:
#     #include <stdatomic.h>
#     #define heim_base_atomic_load(x)        atomic_load((x))
# include a workaround for now
# (-latomic and <stdatomic.h> comes from gcc, --as-needed is already in use)
DEB_LDFLAGS_MAINT_APPEND += -latomic
endif

ifneq (,$(filter m68k ,${DEB_HOST_ARCH}))
# without this, build fails with multiple messages like:
# foo.s:NNN: Error: Adjusted signed .word (0xb64a) overflows: `switch'-statement too large.
# when building third_party/heimdal/lib/asn1/asn1_rfc2459_asn1.c (generated)
# It would be best to enable this switch for a single file only (where it is needed)
DEB_CFLAGS_MAINT_APPEND += -mlong-jump-table-offsets
endif

include /usr/share/dpkg/buildtools.mk
include /usr/share/dpkg/buildflags.mk
include /usr/share/dpkg/pkg-info.mk
include /usr/share/dpkg/vendor.mk
V := $(if $(filter terse, ${DEB_BUILD_OPTIONS}),,1)
WAF := PYTHONHASHSEED=1 ./buildtools/bin/waf \
	$(patsubst parallel=%,-j%,$(filter parallel=%,${DEB_BUILD_OPTIONS}))

# stop python from generating .pyc caches
export PYTHONDONTWRITEBYTECODE=1

ifeq (linux,${DEB_HOST_ARCH_OS})
ifneq (${DEB_HOST_GNU_TYPE},${DEB_BUILD_GNU_TYPE})
# for cross-build or build with foreign python binary (it is _gnu0_i386-gnu on hurd)
export _PYTHON_SYSCONFIGDATA_NAME=_sysconfigdata__${DEB_HOST_ARCH_OS}_${DEB_HOST_MULTIARCH}
endif
endif

DESTDIR = ${CURDIR}/debian/tmp

before-trixie := $(filter pkg.samba.before-trixie, ${DEB_BUILD_PROFILES})

# used to be dpkg_late_eval
late-eval = $(or $(value cache-$1),$(eval cache-$1 := $(shell $2))$(value cache-$1))

ldb-upstream-version = $(call late-eval,LDB_VERSION,grep ^LDB_VERSION lib/ldb/wscript | cut -d\' -f2)
ldb-version = 2:${ldb-upstream-version}+samba${DEB_VERSION_UPSTREAM_REVISION}
ldb-packages = libldb2 libldb-dev ldb-tools python3-ldb

extra-version-vars = \
	-Vldb:Version=${ldb-version} \

omit-pkgs =

config-args = \
	--vendor-suffix=${DEB_VENDOR}-${DEB_VERSION_UPSTREAM_REVISION} \
	--prefix=/usr \
	--enable-fhs \
	--sysconfdir=/etc \
	--localstatedir=/var \
	--libexecdir=/usr/libexec \
	--libdir=/usr/lib/${DEB_HOST_MULTIARCH} \
	--datadir=/usr/share \
	--with-modulesdir=/usr/lib/${DEB_HOST_MULTIARCH}/samba \
	--with-pammodulesdir=/lib/${DEB_HOST_MULTIARCH}/security \
	--with-privatedir=/var/lib/samba/private \
	--with-smbpasswd-file=/etc/samba/smbpasswd \
	--with-piddir=/run/samba \
	--with-lockdir=/run/samba \
	--with-sockets-dir=/run/samba \
	--with-statedir=/var/lib/samba \
	--with-cachedir=/var/cache/samba \
	--with-pam \
	--with-syslog \
	--with-utmp \
	--with-winbind \
	--with-automount \
	--with-ldap \
	--with-ads \
	--with-gpgme \
	--enable-avahi \
	--enable-spotlight \
	--with-profiling-data \
	--disable-rpath --disable-rpath-install \
	--private-libraries=!ldb \
	\
	--with-cluster-support \
	--enable-etcd-reclock \
	--with-socketpath=/run/ctdb/ctdbd.socket \
	--with-logdir=/var/log/ctdb \

# some modules are linked statically by default (see default_static_module in wscript*),
# but they're often linked into other libraries, which might result in cyclic deps.
# Eg, vfs_dfs_samba4 is statically linked to libsmbd-base-private, which is part of
# samba-libs (not samba), because it is used by python3-samba too (smbd.cpython).
# Might consider using --with-shared-modules=ALL
# Other modules (vfs_nfs4acl_xattr) are not enabled by default (#930540).
config-args += \
	--with-shared-modules=vfs_dfs_samba4,vfs_nfs4acl_xattr,auth_samba4

ifeq (${DEB_HOST_ARCH_OS}, linux) # extra linux-specific features

config-args += \
	--with-quota \
	--with-systemd \

endif

# Ubuntu i386 binary compatibility only effort: Disable some i386 packages and modules
ifeq (${DEB_VENDOR}-${DEB_HOST_ARCH}, Ubuntu-i386)
omit-pkgs += ctdb libpam-winbind samba samba-ad-dc samba-testsuite samba-vfs-modules samba-vfs-ceph samba-vfs-glusterfs
endif

# we had t64 transition (libsmbclient => libsmbclient0) for trixie
libsmbclient := $(if ${before-trixie},libsmbclient,libsmbclient0)

mitkrb5-dep-pkgs :=
ifneq (,$(filter pkg.samba.mitkrb5, ${DEB_BUILD_PROFILES}))
config-args += \
	--with-system-mitkrb5 \
	--with-experimental-mit-ad-dc \
	--with-system-mitkdc=/usr/sbin/krb5kdc
# samba packages will have its own version suffix
mitkrb5-samba-ver = ${DEB_VERSION}mitkrb5
mitkrb5-dep-pkgs += samba-libs samba-dev
mitkrb5-dep-pkgs += samba samba-common-bin python3-samba
mitkrb5-dep-pkgs += samba-vfs-ceph samba-vfs-glusterfs
mitkrb5-dep-pkgs += samba-dsdb-modules
mitkrb5-dep-pkgs += ${libsmbclient} smbclient
mitkrb5-dep-pkgs += libnss-winbind libpam-winbind
mitkrb5-dep-pkgs += winbind libwbclient0
mitkrb5-dep-pkgs += samba-testsuite
mitkrb5-dep-pkgs += ctdb
endif

ifneq (,${omit-pkgs})
export DH_OPTIONS += $(addprefix -N, ${omit-pkgs})
endif
# ${build-pkgs} will honour arch/indep and the above list in ${DH_OPTIONS}
build-pkgs := $(shell dh_listpackages)

with-ceph := $(filter samba-vfs-ceph,${build-pkgs})
config-args += $(if ${with-ceph},\
	  --enable-cephfs --enable-ceph-reclock,\
	  --disable-cephfs)

binary binary-arch binary-indep \
install install-arch install-indep: %:
	dh $*

configure: bin/configured.stamp
.PHONY: configure
bin/configured.stamp:
	CC="${CC}" CPP="${CPP}" LD="${LD}" PKGCONFIG="${PKG_CONFIG}" \
	CPPFLAGS="${CPPFLAGS}" CFLAGS="${CFLAGS}" LDFLAGS="${LDFLAGS}" \
	PYTHON=python3 PYTHON_CONFIG=${DEB_HOST_MULTIARCH}-python3-config \
	    ${WAF} -j1 -C configure ${config-args} || \
	  { $(if ${V},echo "==== contents of config.log:"; cat bin/config.log;) false; }
# #1013205: https://lists.samba.org/archive/samba-technical/2022-November/137788.html
	rm -f third_party/heimdal/lib/gssapi/gssapi.h
	touch $@

build-arch: bin/built.stamp
bin/built.stamp: bin/configured.stamp
# samba build system is designed so that default build (what is produced
# by waf build) supposed to be run directly from the build directory,
# with all the paths pointing there.  At the install stage, quite some
# recompilation/relinking is done again, to adopt to the actual install
# paths. There's no need (for now) to build samba to be run from the build
# directory, so we use `waf install' here instead of `waf build'.
# However, as of 4.16 and still 4.21, `waf install' without the build step fails,
# since it tries to run two executables which are not built.
# Build these two executables first, and build the install stage.
# This will pefrorm unnecessary/extra install step (into d/tmp), which
# we'll repeat during actual install stage, but this is definitely
# better/faster than building whole thing for _not_ running from the build dir.
	${WAF} $(if $V,-v) --targets=compile_et,asn1_compile
	${WAF} $(if $V,-v) install --destdir="${DESTDIR}"
	touch $@
build-indep:
build: build-arch build-indep

##############  Tests ##############
# We should use separate build for tests since it requires configuration
# with --enable-selftest which is not compatible with production build.
# Since samba build system always builds in bin/, we save whole source
# into a subdir (testbuild/) and run everything from there.

testbuild/copied.stamp:
	rm -rf testbuild; mkdir testbuild
	cp -a -l $$(ls -1 | egrep -v '^(bin|testbuild|debian)$$') testbuild/
# cleanup some files just in case, do not interfere with production build
	find testbuild -name __pycache__ -exec rm -rf {} +
	rm -f testbuild/compile_commands.json
	touch $@
testbuild/configured.stamp: testbuild/copied.stamp
	@echo "############## selftest configure ##############"
# allow some bundled "lib" for now just for the test build. Debian has them
# (libsocket-wrapper &Co), but let's just build the bundled ones. There's no
# good reason to use externally-packaged wrappers, they're small to build and
# we don't use them for production build, and extra versioned build-dep hurts.
	cd testbuild && \
	CPPFLAGS="${CPPFLAGS}" CFLAGS="${CFLAGS}" LDFLAGS="${LDFLAGS}" \
	    ${WAF} -j1 -C configure --enable-selftest \
		$$(echo '${config-args}' | \
		   sed 's|--bundled-libraries=NONE|&,nss_wrapper,pam_wrapper,resolv_wrapper,socket_wrapper,uid_wrapper|')
# FIXME: some tests fail for now, handle them later (last check: 4.17.2, heimdal build)
	rm -f testbuild/selftest/knownfail.d/debian
	echo '^samba3.smb2.session\ enc.(reauth.|bind.|bind_negative.*|bind_invalid_auth|encryption-aes-.*)\(nt4_dc\)' \
		>>testbuild/selftest/knownfail.d/debian
#	echo '^samba3.rpc.schannel_anon_setpw\ anonymous\ password\ set\ \(schannel\ enforced\ server-side\)\(nt4_dc_schannel\)' \
#		>>testbuild/selftest/knownfail.d/debian
	echo '^samba4.ntvfs.cifs.ntlm.base.unlink.unlink\(rpc_proxy\)' \
		>>testbuild/selftest/knownfail.d/debian
	echo '^samba4.rpc.echo\ against\ rpc\ proxy\ with\ domain\ creds\(rpc_proxy\)' \
		>>testbuild/selftest/knownfail.d/debian
	touch $@
selftest-quick: testbuild/configured.stamp
	@echo "############## selftest run ##############"
	cd testbuild && ${WAF} test --quick

override_dh_auto_test: # $(if $(findstring nocheck, ${DEB_BUILD_OPTIONS}),, selftest-quick)

override_dh_auto_install-arch:
# the same "waf install" as in the build target
	${WAF} install --destdir="${DESTDIR}"
	# get list of files in build log
	find debian/tmp
	# Included in python-tevent?
	rm debian/tmp/usr/lib/python*/*-packages/_tevent.*
	rm debian/tmp/usr/lib/python*/*-packages/tevent.py
	# selftests: either not needed or should go to -testsuite
	rm -rf debian/tmp/usr/lib/python3/dist-packages/samba/tests/
	# pam stuff
	install -Dp -m0644 debian/winbind.pam-config debian/tmp/usr/share/pam-configs/winbind
	mv debian/tmp/usr/lib/$(DEB_HOST_MULTIARCH)/libnss_* debian/tmp/lib/$(DEB_HOST_MULTIARCH)/
	install -p -m755 debian/update-apparmor-samba-profile -t debian/tmp/usr/share/samba/
	install -Dp -m0644 debian/samba.ufw.profile debian/tmp/etc/ufw/applications.d/samba
	# install-and-rename docs for ctdb (also arch-specific)
	mkdir -p debian/tmp/ctdb
	install -p ctdb/config/events/README debian/tmp/ctdb/README.notification
	install -p ctdb/config/notification.README debian/tmp/ctdb/README.notification
ifeq ($(DEB_HOST_ARCH_OS), hurd)
	install -p debian/ctdb.README.hurd debian/tmp/ctdb/README.hurd
endif
ifeq ($(DEB_HOST_ARCH_OS), kfreebsd)
	install -p debian/ctdb.README.kfreebsd debian/tmp/ctdb/README.kfreebsd
endif

execute_after_dh_install-arch:
# some vfs modules are in separate packages.  Removing them here avoids having
# explicit list of other modules in d/samba.install
	rm -f \
	    debian/samba/usr/lib/${DEB_HOST_MULTIARCH}/samba/vfs/glusterfs*.so \
	    debian/samba/usr/share/man/man8/vfs_glusterfs*.8 \
	    debian/samba/usr/lib/${DEB_HOST_MULTIARCH}/samba/vfs/ceph*.so \
	    debian/samba/usr/share/man/man8/vfs_ceph*.8

provision-dest := debian/samba-ad-provision/usr/share/samba/setup

override_dh_auto_install-indep:
# only arch-all package is samba-common containing a few debian-specific files
# Most of files needs are renamed during install so lets put them
# directly into the right place without d/samba-common.install indirection
	# Debian goodies
	install -Dp -m0644 debian/smb.conf -t debian/samba-common/usr/share/samba/
ifeq (${DEB_VENDOR}, Ubuntu)
	patch debian/samba-common/usr/share/samba/smb.conf debian/smb.conf.ubuntu.diff
endif
	# we wrongly have pam file in samba-common instead of samba
	install -Dp -m0644 debian/samba.pam debian/samba-common/etc/pam.d/samba

# install provision files (samba-ad-provision, source4/setup/)
	mkdir -p -m0755 ${provision-dest}
	cp -r --preserve=timestamps source4/setup/. ${provision-dest}
	rm -rf ${provision-dest}/tests
	rm -f	${provision-dest}/wscript* \
		${provision-dest}/adprep/samba-4.7-missing-for-schema45.ldif

override_dh_installpam:

# include a command only if the given package is being built
ifpkg = $(if $(filter ${1},${build-pkgs}),${2})

override_dh_installinit:
ifneq (,$(filter samba, ${build-pkgs}))
	dh_installinit -psamba --name smbd
	dh_installinit -psamba --name nmbd
	dh_installinit -psamba-ad-dc
endif
	$(call ifpkg, winbind, dh_installinit -pwinbind)
ifneq (,$(filter ctdb, ${build-pkgs}))
	install -Dp -m755 ctdb/config/ctdb.init debian/ctdb/etc/init.d/ctdb
	# Install dh scripts
	dh_installinit -pctdb --no-start --no-stop-on-upgrade --onlyscripts
endif

override_dh_installsystemd:
ifneq (,$(filter samba, ${build-pkgs}))
	dh_installsystemd -psamba --name=smbd
	dh_installsystemd -psamba --name=nmbd
	dh_installsystemd -psamba-ad-dc
endif
	$(call ifpkg, winbind, dh_installsystemd -pwinbind)
	$(call ifpkg, ctdb, dh_installsystemd -pctdb --no-start --no-stop-on-upgrade)

execute_after_dh_fixperms-arch:
	$(call ifpkg, smbclient, chmod 0700 debian/smbclient/usr/libexec/samba/smbspool_krb5_wrapper)

override_dh_makeshlibs:
	# create symbols and shlibs files in separate wrapper script
	# to deal with private libraries
	debian/genshlibs \
		$(addsuffix =${ldb-version},${ldb-packages}) \
		$(addsuffix =${mitkrb5-samba-ver}, ${mitkrb5-dep-pkgs})

# depcheck package, dep1|dep2... -- dependencies which should NOT be there
depcheck = if egrep '^shlibs.Depends=.* ($(strip $2)) ' debian/$(strip $1).substvars; \
	then echo 'E: $(strip $1) should not depend on $(strip $2)' >&2; exit 1; fi

override_dh_shlibdeps:
# for specific executables/modules, put dependencies in separate variables
# to change Depends to Recommends for them in d/control
	dh_shlibdeps -l/usr/lib/${DEB_HOST_MULTIARCH}/samba \
	    -Xctdb_mutex_ceph_rados_helper
ifneq (,$(filter ctdb, ${build-pkgs}))
	echo "rados:Depends=" >> debian/ctdb.substvars
ifneq (${with-ceph},)
	dpkg-shlibdeps -Tdebian/ctdb.substvars -prados \
	    debian/ctdb/usr/libexec/ctdb/ctdb_mutex_ceph_rados_helper
endif
endif
# after shlibdeps run, check that we don't have wrong depdendencies
	$(call depcheck, samba-libs, samba|winbind|smbclient|ctdb)
	$(call depcheck, smbclient, samba|winbind|ctdb)
	$(call depcheck, ctdb, samba|winbind|smbclient)
	$(call depcheck, libldb2, samba|samba-libs|winbind|libwbclient0) # use-bzero-instead-of-memset_s.diff
	$(call depcheck, python3-ldb, samba-libs|python3-samba)
	$(call depcheck, python3-samba, samba|winbind|ctdb)
	$(call depcheck, libwbclient0, samba|samba-libs|winbind|smbclient|ctdb)
	$(call depcheck, ${libsmbclient}, samba|winbind|smbclient|ctdb)

override_dh_gencontrol:
	dh_gencontrol $(addprefix -p, ${ldb-packages}) -- -v${ldb-version}
ifneq (,$(filter ${build-pkgs}, ${mitkrb5-dep-pkgs}))
	dh_gencontrol $(addprefix -p, $(filter ${build-pkgs}, ${mitkrb5-dep-pkgs})) -- -v${mitkrb5-samba-ver} ${extra-version-vars}
endif
	dh_gencontrol --remaining-packages -- ${extra-version-vars}
ifeq (,${before-trixie})
# run dh_movetousr only on trixie and up, not before
	dh_movetousr -plibpam-winbind -plibnss-winbind
endif

clean:
	# see also debian/clean
	dh_clean bin/ testbuild/