# Makefile for secure rtp
#
# David A. McGrew
# Cisco Systems, Inc.

# targets:
#
# runtest       runs test applications
# runtest-valgrind runs test applications with valgrind
# test		builds test applications
# libsrtp2.a	static library implementing srtp
# libsrtp2.so	shared library implementing srtp
# clean		removes objects, libs, and executables
# distribution  cleans and builds a .tgz
# tags          builds etags file from all .c and .h files

DYNAMIC_PATH_VAR = @DYNAMIC_PATH_VAR@
CRYPTO_LIBDIR = @CRYPTO_LIBDIR@
USE_EXTERNAL_CRYPTO = @USE_EXTERNAL_CRYPTO@
HAVE_PCAP = @HAVE_PCAP@

# Specify how tests should find shared libraries on macOS and Linux
#
# macOS purges DYLD_LIBRARY_PATH when spawning subprocesses, so it's
# not possible to pass this in from the outside; we have to specify
# it for any subprocesses we call. No support for dynamic linked
# tests on Windows.
ifneq ($(strip $(CRYPTO_LIBDIR)),)
	ifneq ($(OS),Windows_NT)
		UNAME_S = $(shell uname -s)
		ifeq ($(UNAME_S),Linux)
			FIND_LIBRARIES = LD_LIBRARY_PATH=$(CRYPTO_LIBDIR)
		endif
		ifeq ($(UNAME_S),Darwin)
			FIND_LIBRARIES = DYLD_LIBRARY_PATH=$(CRYPTO_LIBDIR)
		endif
		CRYPTO_LIBDIR_FORWARD = CRYPTO_LIBDIR=$(CRYPTO_LIBDIR)
	endif
endif

.PHONY: all shared_library test

all: test

runtest: test
	@echo "running libsrtp2 test applications..."
	$(FIND_LIBRARIES) crypto/test/cipher_driver$(EXE) -v >/dev/null
	$(FIND_LIBRARIES) crypto/test/kernel_driver$(EXE) -v >/dev/null
	$(FIND_LIBRARIES) test/test_srtp$(EXE) >/dev/null
	$(FIND_LIBRARIES) test/rdbx_driver$(EXE) -v >/dev/null
	$(FIND_LIBRARIES) test/srtp_driver$(EXE) -v >/dev/null
	$(FIND_LIBRARIES) test/roc_driver$(EXE) -v >/dev/null
	$(FIND_LIBRARIES) test/replay_driver$(EXE) -v >/dev/null
	cd test; $(CRYPTO_LIBDIR_FORWARD) $(abspath $(srcdir))/test/rtpw_test.sh -w $(abspath $(srcdir))/test/words.txt >/dev/null
ifeq (1, $(USE_EXTERNAL_CRYPTO))
	cd test; $(CRYPTO_LIBDIR_FORWARD) $(abspath $(srcdir))/test/rtpw_test_gcm.sh -w $(abspath $(srcdir))/test/words.txt >/dev/null
endif
	@echo "libsrtp2 test applications passed."
	$(MAKE) -C crypto runtest

runtest-valgrind: test
	@echo "running libsrtp2 test applications... (valgrind)"
	valgrind --error-exitcode=1 --leak-check=full test/test_srtp$(EXE) -v >/dev/null
	valgrind --error-exitcode=1 --leak-check=full test/srtp_driver$(EXE) -v >/dev/null
	@echo "libsrtp2 test applications passed. (valgrind)"

# makefile variables

CC	= @CC@
CXX	= @CXX@
INCDIR	= -Icrypto/include -I$(srcdir)/include -I$(srcdir)/crypto/include
DEFS	= @DEFS@
CPPFLAGS= @CPPFLAGS@
CFLAGS	= @CFLAGS@
CXXFLAGS= @CXXFLAGS@
srtp-fuzzer: CFLAGS += -g
srtp-fuzzer: CXXFLAGS += -g
LIBS	= @LIBS@
LDFLAGS	= -L. @LDFLAGS@
COMPILE = $(CC) $(DEFS) $(INCDIR) $(CPPFLAGS) $(CFLAGS)
SRTPLIB	= -lsrtp2
PCAP_LIB = @PCAP_LIB@

AR      = @AR@
RANLIB	= @RANLIB@
INSTALL	= @INSTALL@

# EXE defines the suffix on executables - it's .exe for Windows, and
# null on linux, bsd, and OS X and other OSes.
EXE	= @EXE@

HMAC_OBJS = @HMAC_OBJS@
AES_ICM_OBJS = @AES_ICM_OBJS@

srcdir = @srcdir@
top_srcdir = @top_srcdir@
top_builddir = @top_builddir@
VPATH = @srcdir@
prefix = @prefix@
exec_prefix = @exec_prefix@
includedir = @includedir@
libdir = @libdir@
bindir = @bindir@

pkgconfigdir = $(libdir)/pkgconfig
pkgconfig_DATA = libsrtp2.pc

SHAREDLIBVERSION = 1
ifneq (,$(or $(findstring linux,@host@), $(findstring gnu,@host@)))
SHAREDLIB_DIR = $(libdir)
SHAREDLIB_LDFLAGS = -shared -Wl,-soname,$@
SHAREDLIBSUFFIXNOVER = so
SHAREDLIBSUFFIX = $(SHAREDLIBSUFFIXNOVER).$(SHAREDLIBVERSION)
else ifneq (,$(or $(findstring cygwin,@host@), $(findstring mingw,@host@)))
SHAREDLIB_DIR = $(bindir)
SHAREDLIB_LDFLAGS = -shared -Wl,--out-implib,libsrtp2.dll.a
SHAREDLIBVERSION =
SHAREDLIBSUFFIXNOVER = dll
SHAREDLIBSUFFIX = $(SHAREDLIBSUFFIXNOVER)
else ifeq (darwin,$(findstring darwin,@host@))
SHAREDLIB_DIR = $(libdir)
SHAREDLIB_LDFLAGS = -dynamiclib -twolevel_namespace \
		-fno-common -headerpad_max_install_names -install_name $(libdir)/$@
SHAREDLIBSUFFIXNOVER = dylib
SHAREDLIBSUFFIX = $(SHAREDLIBVERSION).$(SHAREDLIBSUFFIXNOVER)
endif

# implicit rules for object files and test apps

%.o: %.c
	$(COMPILE) -c $< -o $@

%$(EXE): %.c
	$(COMPILE) $(LDFLAGS) $< -o $@ $(SRTPLIB) $(LIBS)

ciphers = crypto/cipher/cipher.o crypto/cipher/null_cipher.o      \
	  crypto/cipher/cipher_test_cases.o                       \
	  $(AES_ICM_OBJS)

hashes  = crypto/hash/null_auth.o  crypto/hash/auth.o            \
	  crypto/hash/auth_test_cases.o                          \
	  $(HMAC_OBJS)

replay  = crypto/replay/rdb.o crypto/replay/rdbx.o

math    = crypto/math/datatypes.o

ust     = crypto/ust/ust.o

err     = crypto/kernel/err.o

kernel  = crypto/kernel/crypto_kernel.o  crypto/kernel/alloc.o   \
	  crypto/kernel/key.o $(err) # $(ust)

cryptobj =  $(ciphers) $(hashes) $(math) $(kernel) $(replay)

# libsrtp2.a (implements srtp processing)

srtpobj = srtp/srtp.o

libsrtp2.a: $(srtpobj) $(cryptobj) $(gdoi)
	$(AR) cr libsrtp2.a $^
	$(RANLIB) libsrtp2.a

libsrtp2.$(SHAREDLIBSUFFIX): $(srtpobj) $(cryptobj) $(gdoi)
	$(CC) -shared -o $@ $(SHAREDLIB_LDFLAGS) \
				$^ $(LDFLAGS) $(LIBS)
	if [ -n "$(SHAREDLIBVERSION)" ]; then \
		ln -sfn $@ libsrtp2.$(SHAREDLIBSUFFIXNOVER); \
	fi

shared_library: libsrtp2.$(SHAREDLIBSUFFIX)

libsrtp2.so: $(srtpobj) $(cryptobj)
	$(CC) -shared -Wl,-soname,libsrtp2.so \
		-o libsrtp2.so $^ $(LDFLAGS)

# test applications
ifneq (1, $(USE_EXTERNAL_CRYPTO))
AES_CALC = crypto/test/aes_calc$(EXE)
SHA1_DRIVER = crypto/test/sha1_driver$(EXE)
endif

crypto_testapp = $(AES_CALC) crypto/test/cipher_driver$(EXE) \
	crypto/test/datatypes_driver$(EXE) crypto/test/kernel_driver$(EXE) \
	$(SHA1_DRIVER) crypto/test/env$(EXE)

testapp = $(crypto_testapp) test/srtp_driver$(EXE) test/replay_driver$(EXE) \
	  test/roc_driver$(EXE) test/rdbx_driver$(EXE) test/rtpw$(EXE) \
	  test/test_srtp$(EXE)

ifeq (1, $(HAVE_PCAP))
testapp += test/rtp_decoder$(EXE)
endif

$(testapp): libsrtp2.a

test/rtpw$(EXE): test/rtpw.c test/rtp.c test/util.c test/getopt_s.c \
		crypto/math/datatypes.c
	$(COMPILE) $(LDFLAGS) -o $@ $^ $(LIBS) $(SRTPLIB)

ifeq (1, $(HAVE_PCAP))
test/rtp_decoder$(EXE): test/rtp_decoder.c test/rtp.c test/util.c test/getopt_s.c \
		crypto/math/datatypes.c
	$(COMPILE) $(LDFLAGS) -o $@ $^ $(PCAP_LIB) $(LIBS) $(SRTPLIB)
endif

crypto/test/aes_calc$(EXE): crypto/test/aes_calc.c test/util.c
	$(COMPILE) -I$(srcdir)/test $(LDFLAGS) -o $@ $^ $(LIBS) $(SRTPLIB)

test/test_srtp$(EXE): test/test_srtp.c
	$(COMPILE) -I$(srcdir)/test $(LDFLAGS) -o $@ $^ $(LIBS) $(SRTPLIB)

crypto/test/datatypes_driver$(EXE): crypto/test/datatypes_driver.c test/util.c
	$(COMPILE) -I$(srcdir)/test $(LDFLAGS) -o $@ $^ $(LIBS) $(SRTPLIB)

crypto/test/sha1_driver$(EXE): crypto/test/sha1_driver.c test/util.c
	$(COMPILE) -I$(srcdir)/test $(LDFLAGS) -o $@ $^ $(LIBS) $(SRTPLIB)

test/srtp_driver$(EXE): test/srtp_driver.c test/util.c test/getopt_s.c
	$(COMPILE) -I$(srcdir)/test $(LDFLAGS) -o $@ $^ $(LIBS) $(SRTPLIB)

test/rdbx_driver$(EXE): test/rdbx_driver.c test/getopt_s.c test/ut_sim.c
	$(COMPILE) -I$(srcdir)/test $(LDFLAGS) -o $@ $^ $(LIBS) $(SRTPLIB)

test/roc_driver$(EXE): test/roc_driver.c test/ut_sim.c
	$(COMPILE) -I$(srcdir)/test $(LDFLAGS) -o $@ $^ $(LIBS) $(SRTPLIB)

test/replay_driver$(EXE): test/replay_driver.c test/ut_sim.c
	$(COMPILE) -I$(srcdir)/test $(LDFLAGS) -o $@ $^ $(LIBS) $(SRTPLIB)

crypto/test/cipher_driver$(EXE): crypto/test/cipher_driver.c test/getopt_s.c
	$(COMPILE) -I$(srcdir)/test $(LDFLAGS) -o $@ $^ $(LIBS) $(SRTPLIB)

crypto/test/kernel_driver$(EXE): crypto/test/kernel_driver.c test/getopt_s.c
	$(COMPILE) -I$(srcdir)/test $(LDFLAGS) -o $@ $^ $(LIBS) $(SRTPLIB)

crypto/test/env$(EXE): crypto/test/env.c test/getopt_s.c
	$(COMPILE) -I$(srcdir)/test $(LDFLAGS) -o $@ $^ $(LIBS) $(SRTPLIB)

test: $(testapp)
	@echo "Build done. Please run '$(MAKE) runtest' to run self tests."

memtest: test/srtp_driver
	@test/srtp_driver -v -d "alloc" > tmp
	@grep freed tmp | wc -l > freed
	@grep allocated tmp | wc -l > allocated
	@echo "checking for memory leaks (only works with --enable-stdout)"
	cmp -s allocated freed
	@echo "passed (same number of alloc() and dealloc() calls found)"
	@rm freed allocated tmp

# the target 'plot' runs the timing test (test/srtp_driver -t) then
# uses gnuplot to produce plots of the results - see the script file
# 'timing'

plot:	test/srtp_driver
	test/srtp_driver -t > timing.dat


# bookkeeping: tags, clean, and distribution

tags:
	etags */*.[ch] */*/*.[ch]


# documentation - the target libsrtp2doc builds html documentation

libsrtp2doc:
	$(MAKE) -C doc

# fuzzer

srtp-fuzzer: libsrtp2.a
	$(MAKE) -C fuzzer

.PHONY: clean superclean distclean install

install:
	$(INSTALL) -d $(DESTDIR)$(includedir)/srtp2
	$(INSTALL) -d $(DESTDIR)$(libdir)
	cp $(srcdir)/include/srtp.h $(DESTDIR)$(includedir)/srtp2
	cp $(srcdir)/crypto/include/cipher.h $(DESTDIR)$(includedir)/srtp2
	cp $(srcdir)/crypto/include/auth.h $(DESTDIR)$(includedir)/srtp2
	cp $(srcdir)/crypto/include/crypto_types.h $(DESTDIR)$(includedir)/srtp2
	if [ -f libsrtp2.a ]; then cp libsrtp2.a $(DESTDIR)$(libdir)/; fi
	if [ -f libsrtp2.dll.a ]; then cp libsrtp2.dll.a $(DESTDIR)$(libdir)/; fi
	if [ -f libsrtp2.$(SHAREDLIBSUFFIX) ]; then \
		$(INSTALL) -d $(DESTDIR)$(SHAREDLIB_DIR); \
		cp libsrtp2.$(SHAREDLIBSUFFIX) $(DESTDIR)$(SHAREDLIB_DIR)/; \
		cp libsrtp2.$(SHAREDLIBSUFFIXNOVER) $(DESTDIR)$(SHAREDLIB_DIR)/; \
		if [ -n "$(SHAREDLIBVERSION)" ]; then \
			ln -sfn libsrtp2.$(SHAREDLIBSUFFIX) $(DESTDIR)$(SHAREDLIB_DIR)/libsrtp2.$(SHAREDLIBSUFFIXNOVER); \
		fi; \
	fi
	$(INSTALL) -d $(DESTDIR)$(pkgconfigdir)
	cp $(top_builddir)/$(pkgconfig_DATA) $(DESTDIR)$(pkgconfigdir)/

uninstall:
	rm -f $(DESTDIR)$(includedir)/srtp2/*.h
	rm -f $(DESTDIR)$(libdir)/libsrtp2.*
	-rmdir $(DESTDIR)$(includedir)/srtp2
	rm -f $(DESTDIR)$(pkgconfigdir)/$(pkgconfig_DATA)

clean:
	rm -rf $(cryptobj) $(srtpobj) TAGS \
		libsrtp2.a libsrtp2.so libsrtp2.dll.a core *.core test/core
	for a in * */* */*/*; do			\
			  if [ -f "$$a~" ] ; then rm -f $$a~; fi;	\
		done;
	for a in $(testapp); do rm -rf $$a$(EXE); done
	rm -rf *.pict *.jpg *.dat
	rm -rf freed allocated tmp
	$(MAKE) -C doc clean
	$(MAKE) -C fuzzer clean

superclean: clean
	rm -rf crypto/include/config.h config.log config.cache config.status \
			   Makefile crypto/Makefile doc/Makefile \
			   .gdb_history test/.gdb_history .DS_Store
	rm -rf autom4te.cache

distclean: superclean

distversion = $(shell cat VERSION)
distname = libsrtp-$(distversion)

mesonprojver = $(shell sed -n -e "s/project.*version\s*:\s'\([0-9.]\+\)'.*/\1/p" meson.build)

distribution: runtest superclean
	if ! [ -f VERSION ]; then exit 1; fi
	@# Check that the project version set in meson matches the release version
	@if [ $(distversion) != $(mesonprojver) ]; then \
		echo "==================================================="; \
		echo "Meson project version is $(mesonprojver) which is incorrect."; \
		echo "Please edit meson.build and change the 'version:'"; \
		echo "field in the project() call to $(distversion)"; \
		echo "==================================================="; \
		exit 1; \
	fi
	if [ -f ../$(distname).tgz ]; then               \
		   mv ../$(distname).tgz ../$(distname).tgz.bak; \
		fi
	cd ..; tar cvzf $(distname).tgz libsrtp

# EOF