#!/usr/bin/make -f

# Uncomment this to turn on verbose mode.
# export DH_VERBOSE=1

# This has to be exported to make some magic below work.
export DH_OPTIONS

ifeq (,$(findstring noopt,$(DEB_BUILD_OPTIONS)))
OPTFLAGS := -O2
else
OPTFLAGS := -O0
endif

# Use position-independent executables to take advantage of address space
# layout randomisation. TODO: This should be done in configure.
PIE_CFLAGS := -fPIE
PIE_LDFLAGS := -fPIE -pie

DEB_HOST_ARCH_OS := $(shell dpkg-architecture -qDEB_HOST_ARCH_OS 2>/dev/null)

# Take account of old dpkg-architecture output.
ifeq ($(DEB_HOST_ARCH_OS),)
  DEB_HOST_ARCH_OS := $(subst -gnu,,$(shell dpkg-architecture -qDEB_HOST_GNU_SYSTEM))
  ifeq ($(DEB_HOST_ARCH_OS),gnu)
    DEB_HOST_ARCH_OS := hurd
  endif
endif

ifeq (,$(wildcard /usr/bin/po2debconf))
PO2DEBCONF := no
MINDEBCONFVER := 0.5
else
PO2DEBCONF := yes
MINDEBCONFVER := 1.2.0
endif

# We need a new libpam-runtime for sane PAM handling
# (http://lists.debian.org/debian-devel-announce-0308/msg00012.html).
# Unfortunately it's hard to detect during the build whether this is
# appropriate, so woody-compatibility is a pain. I've had to punt and go for
# a DEB_BUILD_SSH_WOODY environment variable. We can remove this hack once
# we no longer care about woody.
ifeq ($(DEB_BUILD_SSH_WOODY),)
PAMSUBST := no
PAMDEP := libpam-runtime (>= 0.76-14)
else
PAMSUBST := yes
PAMDEP := libpam-runtime
endif

# The Hurd needs libcrypt for res_query et al.
ifeq ($(DEB_HOST_ARCH_OS),hurd)
FORCE_LIBS := LIBS=-lcrypt
endif

# SELinux support?
ifeq ($(DEB_HOST_ARCH_OS),linux)
SELINUX := --with-selinux
endif

# Change the version string to include the Debian version
SSH_EXTRAVERSION := Debian-$(shell dpkg-parsechangelog | sed -n -e '/^Version:/s/Version: //p' | sed -e 's/[^-]*-//')

DISTRIBUTOR := $(shell lsb_release -is || echo Debian)
ifeq ($(DISTRIBUTOR),Ubuntu)
DEFAULT_PATH := /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/bin/X11:/usr/games
else
DEFAULT_PATH := /usr/local/bin:/usr/bin:/bin:/usr/bin/X11:/usr/games
endif
SUPERUSER_PATH := /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/bin/X11

build: build-deb build-udeb

build-deb: build-deb-stamp
build-deb-stamp:
	dh_testdir
	mkdir -p build-deb
	cd build-deb && $(FORCE_LIBS) LDFLAGS='$(PIE_LDFLAGS)' ../configure --prefix=/usr --sysconfdir=/etc/ssh --libexecdir=/usr/lib/openssh --mandir=/usr/share/man --with-tcp-wrappers --with-xauth=/usr/bin/X11/xauth --with-default-path=$(DEFAULT_PATH) --with-superuser-path=$(SUPERUSER_PATH) --with-pam --with-4in6 --with-privsep-path=/var/run/sshd --without-rand-helper --with-libedit --with-kerberos5=/usr --with-ssl-engine $(SELINUX)

ifeq ($(DEB_HOST_ARCH_OS),linux)
	# Some 2.2 kernels have trouble with setres[ug]id() (bug #239999).
	perl -pi -e 's/.*#undef (BROKEN_SETRES[UG]ID).*/#define $$1 1/' build-deb/config.h
endif
	# Debian's /var/log/btmp has inappropriate permissions.
	perl -pi -e 's,.*#define USE_BTMP .*,/* #undef USE_BTMP */,' build-deb/config.h

	$(MAKE) -C build-deb -j 2 ASKPASS_PROGRAM='/usr/bin/ssh-askpass' CFLAGS='$(OPTFLAGS) $(PIE_CFLAGS) -g -Wall -Wpointer-arith -Wuninitialized -Wsign-compare -Wno-pointer-sign -std=gnu99 -DLOGIN_PROGRAM=\"/bin/login\" -DLOGIN_NO_ENDOPT -DSSHD_PAM_SERVICE=\"ssh\" -DSSH_EXTRAVERSION="\" $(SSH_EXTRAVERSION)\""'
	# Support building on Debian 3.0 (with GNOME 1.4) and later.
	if [ -f /usr/include/libgnomeui-2.0/gnome.h ]; then \
		$(MAKE) -C contrib gnome-ssh-askpass2 CC='gcc $(OPTFLAGS) -g -Wall'; \
	elif [ -f /usr/include/gnome-1.0/gnome.h ]; then \
		$(MAKE) -C contrib gnome-ssh-askpass1 CC='gcc $(OPTFLAGS) -g -Wall'; \
	fi

	touch build-deb-stamp

build-udeb: build-udeb-stamp
build-udeb-stamp:
	dh_testdir
	mkdir -p build-udeb
	cd build-udeb && $(FORCE_LIBS) ../configure --prefix=/usr --sysconfdir=/etc/ssh --libexecdir=/usr/lib/openssh --without-xauth --with-default-path=/usr/local/bin:/usr/bin:/bin --with-superuser-path=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin --with-4in6 --with-privsep-path=/var/run/sshd --without-rand-helper
	# Debian's /var/log/btmp has inappropriate permissions.
	perl -pi -e 's,.*#define USE_BTMP .*,/* #undef USE_BTMP */,' build-udeb/config.h
	# Avoid libnsl linkage. Ugh.
	perl -pi -e 's/ +-lnsl//' build-udeb/config.status
	cd build-udeb && ./config.status
	$(MAKE) -C build-udeb -j 2 ASKPASS_PROGRAM='/usr/bin/ssh-askpass' CFLAGS='-Os -g -Wall -Wpointer-arith -Wuninitialized -Wsign-compare -Wno-pointer-sign -std=gnu99 -DSSH_EXTRAVERSION="\" $(SSH_EXTRAVERSION)\""' ssh scp sftp sshd ssh-keygen
	touch build-udeb-stamp

clean:
	dh_testdir
	rm -f build-deb-stamp build-udeb-stamp
	rm -rf build-deb build-udeb
	-$(MAKE) -C contrib clean
	rm -f config.log
ifeq ($(PO2DEBCONF),yes)
	# Hack for woody compatibility. This makes sure that the
	# debian/templates file shipped in the source package doesn't
	# specify encodings, which woody's debconf can't handle. If building
	# on a system with po-debconf installed (conveniently debhelper (>=
	# 4.1.16) depends on it), the binary-arch target will generate a
	# better version for sarge.
	echo '1 popular' > debian/po/output
	po2debconf debian/openssh-server.templates.master > debian/openssh-server.templates
	rm -f debian/po/output
endif
ifeq ($(PAMSUBST),yes)
	if [ -f debian/ssh.pam.new-style ]; then \
		mv debian/ssh.pam.new-style debian/ssh.pam; \
	fi
endif
	rm -f debian/ssh-askpass-gnome.png
	dh_clean

install: DH_OPTIONS=-a
install: build
	dh_testdir
	dh_testroot
	dh_clean -k
	dh_installdirs

	$(MAKE) -C build-deb DESTDIR=`pwd`/debian/openssh-client install-nokeys

	rm -f debian/openssh-client/etc/ssh/sshd_config
	#Temporary hack: remove /usr/share/Ssh.bin, since we have no smartcard support anyway.
	rm -f debian/openssh-client/usr/share/Ssh.bin

	# Split off the server.
	mv debian/openssh-client/usr/sbin/sshd debian/openssh-server/usr/sbin/
	mv debian/openssh-client/usr/lib/openssh/sftp-server debian/openssh-server/usr/lib/openssh/
	mv debian/openssh-client/usr/share/man/man5/sshd_config.5 debian/openssh-server/usr/share/man/man5/
	mv debian/openssh-client/usr/share/man/man8/sshd.8 debian/openssh-server/usr/share/man/man8/
	mv debian/openssh-client/usr/share/man/man8/sftp-server.8 debian/openssh-server/usr/share/man/man8/
	rmdir debian/openssh-client/usr/sbin debian/openssh-client/var/run/sshd

	install -m 755 contrib/ssh-copy-id debian/openssh-client/usr/bin/ssh-copy-id
	install -m 644 -c contrib/ssh-copy-id.1 debian/openssh-client/usr/share/man/man1/ssh-copy-id.1
	install -m 644 debian/moduli.5 debian/openssh-client/usr/share/man/man5/moduli.5

	if [ -f contrib/gnome-ssh-askpass2 ]; then \
		install -s -o root -g root -m 755 contrib/gnome-ssh-askpass2 debian/ssh-askpass-gnome/usr/lib/openssh/gnome-ssh-askpass; \
	elif [ -f contrib/gnome-ssh-askpass1 ]; then \
		install -s -o root -g root -m 755 contrib/gnome-ssh-askpass1 debian/ssh-askpass-gnome/usr/lib/openssh/gnome-ssh-askpass; \
	fi
	install -m 644 debian/gnome-ssh-askpass.1 debian/ssh-askpass-gnome/usr/share/man/man1/gnome-ssh-askpass.1
	uudecode -o debian/ssh-askpass-gnome/usr/share/pixmaps/ssh-askpass-gnome.png debian/ssh-askpass-gnome.png.uue

	install -m 755 debian/ssh-argv0 debian/openssh-client/usr/bin/ssh-argv0
	install -m 644 debian/ssh-argv0.1 debian/openssh-client/usr/share/man/man1/ssh-argv0.1

	install -o root -g root debian/openssh-server.init debian/openssh-server/etc/init.d/ssh
	install -o root -g root -m 644 debian/openssh-server.default debian/openssh-server/etc/default/ssh

	install -m 755 build-udeb/ssh debian/openssh-client-udeb/usr/bin/ssh
	install -m 755 build-udeb/scp debian/openssh-client-udeb/usr/bin/scp
	install -m 755 build-udeb/sftp debian/openssh-client-udeb/usr/bin/sftp
	install -m 755 build-udeb/sshd debian/openssh-server-udeb/usr/sbin/sshd
	install -m 755 build-udeb/ssh-keygen debian/openssh-server-udeb/usr/bin/ssh-keygen

	# Remove version control tags to avoid unnecessary conffile
	# resolution steps for administrators.
	sed -i '/\$$OpenBSD:/d' \
		debian/openssh-client/etc/ssh/moduli \
		debian/openssh-client/etc/ssh/ssh_config

# Build architecture-independent files here.
binary-indep: binary-ssh binary-ssh-krb5

# Build architecture-dependent files here.
binary-arch: binary-openssh-client binary-openssh-server
binary-arch: binary-ssh-askpass-gnome
binary-arch: binary-openssh-client-udeb binary-openssh-server-udeb

binary-openssh-client: DH_OPTIONS=-popenssh-client
binary-openssh-client: build install
	dh_testdir
	dh_testroot
	dh_installdebconf
	dh_installdocs OVERVIEW README README.dns README.tun
	cat debian/copyright.head LICENCE > debian/openssh-client/usr/share/doc/openssh-client/copyright
	dh_installchangelogs ChangeLog ChangeLog.gssapi
	install -m644 debian/openssh-client.lintian debian/openssh-client/usr/share/lintian/overrides/openssh-client
	dh_strip
	dh_compress
	dh_fixperms
	chmod u+s debian/openssh-client/usr/lib/openssh/ssh-keysign
	dh_installdeb
	test ! -e debian/ssh/etc/ssh/ssh_prng_cmds \
	  || echo "/etc/ssh/ssh_prng_cmds" >> debian/openssh-client/DEBIAN/conffiles
	perl -i debian/substitute-conffile.pl \
		ETC_SSH_MODULI debian/openssh-client/etc/ssh/moduli \
		ETC_SSH_SSH_CONFIG debian/openssh-client/etc/ssh/ssh_config \
		debian/openssh-client/DEBIAN/preinst
	dh_shlibdeps
	dh_gencontrol -- -V'debconf-depends=debconf (>= $(MINDEBCONFVER)) | debconf-2.0'
	dh_md5sums
	dh_builddeb

binary-openssh-server: DH_OPTIONS=-popenssh-server
binary-openssh-server: build install
	dh_testdir
	dh_testroot
ifeq ($(PO2DEBCONF),yes)
	po2debconf -e utf8 debian/openssh-server.templates.master > debian/openssh-server.templates
endif
	dh_installdebconf
	dh_installdocs
	mv debian/openssh-server/usr/share/doc/openssh-server debian/openssh-server/usr/share/doc/openssh-client
	rm -f debian/openssh-server/usr/share/doc/openssh-client/copyright
ifeq ($(PAMSUBST),yes)
	# Clean up if we've done this already, to ensure idempotency.
	if [ -f debian/openssh-server.ssh.pam.new-style ]; then \
		mv debian/openssh-server.ssh.pam.new-style debian/openssh-server.ssh.pam; \
	fi
	cp -a debian/openssh-server.ssh.pam debian/openssh-server.ssh.pam.new-style
	sed -e "s/@include common-auth/auth       required     pam_unix.so/" \
	    -e "s/@include common-account/account    required     pam_unix.so/" \
	    -e "s/@include common-session/session    required     pam_unix.so/" \
	    -e "s/@include common-password/password   required     pam_unix.so/" \
	    debian/openssh-server.ssh.pam.new-style > debian/openssh-server.ssh.pam
endif
	dh_installpam --name ssh # TODO: breaks woody backports
	dh_link
	dh_strip
	dh_compress
	dh_fixperms
	dh_installdeb
	perl -i debian/substitute-conffile.pl \
		ETC_DEFAULT_SSH debian/openssh-server/etc/default/ssh \
		ETC_INIT_D_SSH debian/openssh-server/etc/init.d/ssh \
		ETC_PAM_D_SSH debian/openssh-server/etc/pam.d/ssh \
		debian/openssh-server/DEBIAN/preinst
	dh_shlibdeps
	dh_gencontrol -- -V'debconf-depends=debconf (>= $(MINDEBCONFVER)) | debconf-2.0' \
	                 -V'pam-depends=$(PAMDEP)'
	dh_md5sums
	dh_builddeb

binary-ssh: DH_OPTIONS=-pssh
binary-ssh: build install
	dh_testdir
	dh_testroot
	dh_installdocs
	mv debian/ssh/usr/share/doc/ssh debian/ssh/usr/share/doc/openssh-client
	rm -f debian/ssh/usr/share/doc/openssh-client/copyright
	dh_link
	dh_compress
	dh_fixperms
	dh_installdeb
	dh_gencontrol
	dh_md5sums
	dh_builddeb

binary-ssh-krb5: DH_OPTIONS=-pssh-krb5
binary-ssh-krb5: build install
	dh_testdir
	dh_testroot
	dh_installdocs
	cat debian/copyright.head LICENCE > debian/ssh-krb5/usr/share/doc/ssh-krb5/copyright
	dh_installchangelogs ChangeLog ChangeLog.gssapi
	dh_link
	dh_compress
	dh_fixperms
	dh_installdeb
	dh_gencontrol
	dh_md5sums
	dh_builddeb

binary-ssh-askpass-gnome: DH_OPTIONS=-pssh-askpass-gnome
binary-ssh-askpass-gnome: build install
	dh_testdir
	dh_testroot
	dh_installdocs
	dh_installexamples debian/ssh-askpass-gnome.desktop
	dh_installchangelogs ChangeLog ChangeLog.gssapi
	dh_strip
	dh_compress
	dh_fixperms
	dh_installdeb
	dh_shlibdeps
	dh_gencontrol
	dh_md5sums
	dh_builddeb

binary-openssh-client-udeb: DH_OPTIONS=-popenssh-client-udeb
binary-openssh-client-udeb: build install
	dh_testdir
	dh_testroot
	dh_strip
	dh_compress
	dh_fixperms
	dh_installdeb
	install -p -o root -g root -m 755 debian/openssh-client-udeb.isinstallable debian/openssh-client-udeb/DEBIAN/isinstallable
	dh_shlibdeps
	dh_gencontrol
	dh_md5sums
	dh_builddeb

binary-openssh-server-udeb: DH_OPTIONS=-popenssh-server-udeb
binary-openssh-server-udeb: build install
	dh_testdir
	dh_testroot
	dh_strip
	dh_compress
	dh_fixperms
	dh_installdeb
	dh_shlibdeps
	dh_gencontrol
	dh_md5sums
	dh_builddeb

binary: binary-indep binary-arch

.PHONY: build clean binary-indep binary-arch binary install
.PHONY: build-deb build-udeb
.PHONY: binary-openssh-client binary-openssh-server binary-ssh
.PHONY: binary-ssh-krb5 binary-ssh-askpass-gnome
.PHONY: binary-openssh-client-udeb binary-openssh-server-udeb