# This Makefile is for Dropbear SSH Server and Client

# invocation:
# make PROGRAMS="dropbear dbclient scp" MULTI=1 STATIC=1 SCPPROGRESS=1
#
# to make a single multiple statically linked binary "staticdropbearmulti",
# which includes dropbear, scp and dbclient functionality, and includes the
# progress-bar functionality in scp. Hopefully that seems intuitive.

# This makefile is quite evil.

ifndef PROGRAMS
	PROGRAMS=dropbear dbclient dropbearkey dropbearconvert
endif

LTC=libtomcrypt/libtomcrypt.a
LTM=libtommath/libtommath.a

COMMONOBJS=dbutil.o buffer.o \
		dss.o bignum.o \
		signkey.o rsa.o random.o \
		queue.o \
		atomicio.o compat.o 

SVROBJS=svr-kex.o svr-algo.o svr-auth.o sshpty.o \
		svr-authpasswd.o svr-authpubkey.o svr-session.o svr-service.o \
		svr-chansession.o svr-runopts.o svr-agentfwd.o svr-main.o svr-x11fwd.o\
		svr-tcpfwd.o

CLIOBJS=cli-algo.o cli-main.o cli-auth.o cli-authpasswd.o cli-kex.o \
		cli-session.o cli-service.o cli-runopts.o cli-chansession.o \
		cli-authpubkey.o cli-tcpfwd.o

CLISVROBJS=common-session.o packet.o common-algo.o common-kex.o \
			common-channel.o common-chansession.o termcodes.o loginrec.o \
			tcp-accept.o listener.o process-packet.o \
			common-runopts.o fake-rfc2553.o

KEYOBJS=dropbearkey.o gendss.o genrsa.o

CONVERTOBJS=dropbearconvert.o keyimport.o

SCPOBJS=scp.o progressmeter.o atomicio.o scpmisc.o

HEADERS=options.h dbutil.h session.h packet.h algo.h ssh.h buffer.h kex.h \
		dss.h bignum.h signkey.h rsa.h random.h service.h auth.h \
		debug.h channel.h chansession.h config.h queue.h sshpty.h \
		termcodes.h gendss.h genrsa.h runopts.h includes.h \
		loginrec.h atomicio.h x11fwd.h agentfwd.h tcpfwd.h compat.h \
		listener.h fake-rfc2553.h

dropbearobjs=$(COMMONOBJS) $(CLISVROBJS) $(SVROBJS) 
dbclientobjs=$(COMMONOBJS) $(CLISVROBJS) $(CLIOBJS)
dropbearkeyobjs=$(COMMONOBJS) $(KEYOBJS)
dropbearconvertobjs=$(COMMONOBJS) $(CONVERTOBJS)
scpobjs=$(SCPOBJS)

prefix=@prefix@
exec_prefix=${prefix}
bindir=${exec_prefix}/bin
sbindir=${exec_prefix}/sbin

CC=@CC@
LD=@LD@
AR=@AR@
RANLIB=@RANLIB@
STRIP=@STRIP@
INSTALL=@INSTALL@
CFLAGS=-Ilibtomcrypt @CFLAGS@
LIBS=$(LTC) $(LTM) @LIBS@
LDFLAGS=@LDFLAGS@

EXEEXT=@EXEEXT@

# whether we're building client, server, or both for the common objects.
# evilness so we detect 'dropbear' by itself as a word
space:= $(empty) $(empty)
ifneq (,$(strip $(foreach prog, $(PROGRAMS), $(findstring ZdropbearZ, Z$(prog)Z))))
	CFLAGS+= -DDROPBEAR_SERVER
endif
ifneq (,$(strip $(foreach prog, $(PROGRAMS), $(findstring ZdbclientZ, Z$(prog)Z))))
	CFLAGS+= -DDROPBEAR_CLIENT
endif


# these are exported so that libtomcrypt's makefile will use them
export CC
export CFLAGS
export RANLIB AR STRIP

ifeq ($(STATIC), 1)
	LDFLAGS+=-static
	SPREFIX=static
else
	SPREFIX=
endif

ifeq ($(MULTI), 1)
	TARGETS=dropbearmulti
else
	TARGETS=$(PROGRAMS)
endif

# for the scp progress meter. The -D doesn't affect anything else.
ifeq ($(SCPPROGRESS), 1)
	CFLAGS+=-DPROGRESS_METER
endif

#%: $(HEADERS)
#%: $(HEADERS) Makefile
# TODO

all: $(TARGETS)

strip: $(TARGETS)
	$(STRIP) $(addsuffix $(EXEEXT), $(addprefix $(SPREFIX), $(TARGETS)))

install: $(addprefix install, $(TARGETS))

# dropbear should go in sbin, so it needs a seperate rule
installdropbear: dropbear
	$(INSTALL) -d -m 755 $(DESTDIR)$(sbindir)
	$(INSTALL) -m 755 $(SPREFIX)dropbear$(EXEEXT) $(DESTDIR)$(sbindir)
	-chown root $(DESTDIR)$(sbindir)/$(SPREFIX)dropbear$(EXEEXT)
	-chgrp 0 $(DESTDIR)$(sbindir)/$(SPREFIX)dropbear$(EXEEXT)

install%: $*
	$(INSTALL) -d -m 755 $(DESTDIR)$(bindir)
	$(INSTALL) -m 755 $(SPREFIX)$*$(EXEEXT) $(DESTDIR)$(bindir)
	-chown root $(DESTDIR)$(sbindir)/$(SPREFIX)$*$(EXEEXT)
	-chgrp 0 $(DESTDIR)$(sbindir)/$(SPREFIX)$*$(EXEEXT)
	ifeq ($(MULTI), 1)
		@echo 
		@echo "You must manually create links for $*"
	endif


# for some reason the rule further down doesn't like $($@objs) as a prereq.
dropbear: $(dropbearobjs)
dbclient: $(dbclientobjs)
dropbearkey: $(dropbearkeyobjs)
dropbearconvert: $(dropbearconvertobjs)

dropbear dbclient dropbearkey dropbearconvert: $(HEADERS)  $(LTC) $(LTM) \
													Makefile
	$(LD) $(LDFLAGS) -o $(SPREFIX)$@$(EXEEXT) $($@objs) $(LIBS)

# scp doesn't use the libs so is special.
scp: $(SCPOBJS)  $(HEADERS) Makefile
	$(LD) $(LDFLAGS) -o $(SPREFIX)$@$(EXEEXT) $(SCPOBJS)


# multi-binary compilation.
MULTIOBJS=
ifeq ($(MULTI),1)
	MULTIOBJS=dbmulti.o $(sort $(foreach prog, $(PROGRAMS), $($(prog)objs)))
	CFLAGS+=$(addprefix -DDBMULTI_, $(PROGRAMS)) -DDROPBEAR_MULTI
endif

dropbearmulti: $(HEADERS) $(MULTIOBJS) $(LTC) $(LTM) Makefile
	$(LD) $(LDFLAGS) -o $(SPREFIX)$@$(EXEEXT) $(MULTIOBJS) $(LIBS)
	@echo
	@echo "You should now create symlinks to the programs you have included"
	@echo "ie 'ln -s dropbearmulti dropbear'"

$(LTC): options.h
	cd libtomcrypt && $(MAKE) clean && $(MAKE)

$(LTM): options.h
	cd libtommath && $(MAKE)

ltc-clean:
	cd libtomcrypt && $(MAKE) clean

ltm-clean:
	cd libtommath && $(MAKE) clean

sizes: dropbear
	objdump -t dropbear|grep ".text"|cut -d "." -f 2|sort -rn

clean: ltc-clean ltm-clean
	-rm -f dropbear dbclient dropbearkey dropbearconvert scp scp-progress
	-rm -f staticdropbear staticdropbearkey staticdropbearconvert staticscp
	-rm -f dropbearmulti staticdropbearmulti
	-rm -f *.o *.da *.bb *.bbg *.prof 

distclean: clean tidy
	-rm -f config.h
	-rm -f Makefile

tidy:
	-rm -f *~ *.gcov */*~