Mercurial > dropbear
view Makefile.in @ 1715:3974f087d9c0
Disallow leading lines before the ident for server (#102)
Per RFC4253 4.2 clients must be able to process other lines of data
before the version string, server behavior is not defined neither
with MUST/SHOULD nor with MAY.
If server process up to 50 lines too - it may cause too long hanging
session with invalid/evil client that consume host resources and
potentially may lead to DDoS on poor embedded boxes.
Let's require first line from client to be version string and fail
early if it's not - matches both RFC and real OpenSSH behavior.
author | Vladislav Grishenko <themiron@users.noreply.github.com> |
---|---|
date | Mon, 15 Jun 2020 18:22:18 +0500 |
parents | 41bf8f216644 |
children | 72bb7fb1fced |
line wrap: on
line source
# This Makefile is for Dropbear SSH Server and Client # @configure_input@ # invocation: # make PROGRAMS="dropbear dbclient scp" MULTI=1 SCPPROGRESS=1 # # to make a multiple-program binary "dropbearmulti". # This example will include dropbear, scp, dropbearkey, dropbearconvert, and # dbclient functionality, and includes the progress-bar functionality in scp. ifndef PROGRAMS PROGRAMS=dropbear dbclient dropbearkey dropbearconvert endif STATIC_LTC=libtomcrypt/libtomcrypt.a STATIC_LTM=libtommath/libtommath.a LIBTOM_LIBS=@LIBTOM_LIBS@ ifeq (@BUNDLED_LIBTOM@, 1) LIBTOM_DEPS=$(STATIC_LTC) $(STATIC_LTM) LIBTOM_CLEAN=ltc-clean ltm-clean CFLAGS+=-I$(srcdir)/libtomcrypt/src/headers/ LIBTOM_LIBS=$(STATIC_LTC) $(STATIC_LTM) endif OPTION_HEADERS = default_options_guard.h sysoptions.h ifneq ($(wildcard localoptions.h),) CFLAGS+=-DLOCALOPTIONS_H_EXISTS OPTION_HEADERS += localoptions.h endif COMMONOBJS=dbutil.o buffer.o dbhelpers.o \ dss.o bignum.o \ signkey.o rsa.o dbrandom.o \ queue.o \ atomicio.o compat.o fake-rfc2553.o \ ltc_prng.o ecc.o ecdsa.o crypto_desc.o \ curve25519.o ed25519.o \ dbmalloc.o \ gensignkey.o gendss.o genrsa.o gened25519.o SVROBJS=svr-kex.o svr-auth.o sshpty.o \ svr-authpasswd.o svr-authpubkey.o svr-authpubkeyoptions.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 svr-authpam.o CLIOBJS=cli-main.o cli-auth.o cli-authpasswd.o cli-kex.o \ cli-session.o cli-runopts.o cli-chansession.o \ cli-authpubkey.o cli-tcpfwd.o cli-channel.o cli-authinteract.o \ cli-agentfwd.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 dh_groups.o \ common-runopts.o circbuffer.o list.o netio.o chachapoly.o gcm.o KEYOBJS=dropbearkey.o CONVERTOBJS=dropbearconvert.o keyimport.o SCPOBJS=scp.o progressmeter.o atomicio.o scpmisc.o compat.o ifeq (@DROPBEAR_FUZZ@, 1) allobjs = $(COMMONOBJS) fuzz-common.o fuzz-wrapfd.o $(CLISVROBJS) $(CLIOBJS) $(SVROBJS) @CRYPTLIB@ allobjs:=$(subst svr-main.o, ,$(allobjs)) allobjs:=$(subst cli-main.o, ,$(allobjs)) allobjs:=$(sort $(allobjs)) dropbearobjs=$(allobjs) svr-main.o dbclientobjs=$(allobjs) cli-main.o dropbearkeyobjs=$(allobjs) $(KEYOBJS) dropbearconvertobjs=$(allobjs) $(CONVERTOBJS) # CXX only set when fuzzing CXX=@CXX@ else dropbearobjs=$(COMMONOBJS) $(CLISVROBJS) $(SVROBJS) dbclientobjs=$(COMMONOBJS) $(CLISVROBJS) $(CLIOBJS) dropbearkeyobjs=$(COMMONOBJS) $(KEYOBJS) dropbearconvertobjs=$(COMMONOBJS) $(CONVERTOBJS) scpobjs=$(SCPOBJS) endif ifeq (@DROPBEAR_PLUGIN@, 1) # rdynamic makes all the global symbols of dropbear available to all the loaded shared libraries # this allow a plugin to reuse existing crypto/utilities like base64_decode/base64_encode without # the need to rewrite them. PLUGIN_LIBS=-ldl -rdynamic else PLUGIN_LIBS= endif VPATH=@srcdir@ srcdir=@srcdir@ prefix=@prefix@ exec_prefix=@exec_prefix@ datarootdir = @datarootdir@ bindir=@bindir@ sbindir=@sbindir@ mandir=@mandir@ .DELETE_ON_ERROR: CC=@CC@ AR=@AR@ RANLIB=@RANLIB@ STRIP=@STRIP@ INSTALL=@INSTALL@ CPPFLAGS=@CPPFLAGS@ CFLAGS+=-I. -I$(srcdir) $(CPPFLAGS) @CFLAGS@ LIBS+=@LIBS@ LDFLAGS=@LDFLAGS@ EXEEXT=@EXEEXT@ STATIC=@STATIC@ # whether we're building client, server, or both for the common objects. # evilness so we detect 'dropbear' by itself as a word ifneq (,$(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 ($(STATIC), 1) LDFLAGS+=-static endif ifeq ($(MULTI), 1) TARGETS=dropbearmulti$(EXEEXT) else TARGETS=$(PROGRAMS) endif # for the scp progress meter. The -D doesn't affect anything else. ifeq ($(SCPPROGRESS), 1) CFLAGS+=-DPROGRESS_METER endif all: $(TARGETS) # for simplicity assume all source depends on all headers HEADERS=$(wildcard $(srcdir)/*.h *.h) $(OPTION_HEADERS) %.o : %.c $(HEADERS) $(CC) -c $(CFLAGS) $(CPPFLAGS) $< -o $@ default_options_guard.h: default_options.h @echo Creating $@ @printf "/*\n > > > Do not edit this file (default_options_guard.h) < < <\nGenerated from "$^"\nLocal customisation goes in localoptions.h\n*/\n\n" > $@.tmp @$(srcdir)/ifndef_wrapper.sh < $^ >> $@.tmp @mv $@.tmp $@ strip: $(TARGETS) $(STRIP) $(addsuffix $(EXEEXT), $(TARGETS)) install: $(addprefix inst_, $(TARGETS)) insmultidropbear: dropbearmulti$(EXEEXT) $(INSTALL) -d $(DESTDIR)$(sbindir) -rm -f $(DESTDIR)$(sbindir)/dropbear$(EXEEXT) -ln -s $(bindir)/dropbearmulti$(EXEEXT) $(DESTDIR)$(sbindir)/dropbear$(EXEEXT) $(INSTALL) -d $(DESTDIR)$(mandir)/man8 $(INSTALL) -m 644 $(srcdir)/dropbear.8 $(DESTDIR)$(mandir)/man8/dropbear.8 insmulti%: dropbearmulti$(EXEEXT) $(INSTALL) -d $(DESTDIR)$(bindir) -rm -f $(DESTDIR)$(bindir)/$*$(EXEEXT) -ln -s $(bindir)/dropbearmulti$(EXEEXT) $(DESTDIR)$(bindir)/$*$(EXEEXT) $(INSTALL) -d $(DESTDIR)$(mandir)/man1 if test -e $*.1; then $(INSTALL) -m 644 $*.1 $(DESTDIR)$(mandir)/man1/$*.1; fi # dropbear should go in sbin, so it needs a separate rule inst_dropbear: dropbear $(INSTALL) -d $(DESTDIR)$(sbindir) $(INSTALL) dropbear$(EXEEXT) $(DESTDIR)$(sbindir) $(INSTALL) -d $(DESTDIR)$(mandir)/man8 $(INSTALL) -m 644 $(srcdir)/dropbear.8 $(DESTDIR)$(mandir)/man8/dropbear.8 inst_%: % $(INSTALL) -d $(DESTDIR)$(bindir) $(INSTALL) $*$(EXEEXT) $(DESTDIR)$(bindir) $(INSTALL) -d $(DESTDIR)$(mandir)/man1 if test -e $*.1; then $(INSTALL) -m 644 $*.1 $(DESTDIR)$(mandir)/man1/$*.1; fi inst_dropbearmulti: $(addprefix insmulti, $(PROGRAMS)) # for some reason the rule further down doesn't like $($@objs) as a prereq. dropbear: $(dropbearobjs) dbclient: $(dbclientobjs) dropbearkey: $(dropbearkeyobjs) dropbearconvert: $(dropbearconvertobjs) dropbear: $(HEADERS) $(LIBTOM_DEPS) Makefile $(CC) $(LDFLAGS) -o $@$(EXEEXT) $($@objs) $(LIBTOM_LIBS) $(LIBS) @CRYPTLIB@ $(PLUGIN_LIBS) dbclient: $(HEADERS) $(LIBTOM_DEPS) Makefile $(CC) $(LDFLAGS) -o $@$(EXEEXT) $($@objs) $(LIBTOM_LIBS) $(LIBS) dropbearkey dropbearconvert: $(HEADERS) $(LIBTOM_DEPS) Makefile $(CC) $(LDFLAGS) -o $@$(EXEEXT) $($@objs) $(LIBTOM_LIBS) $(LIBS) # scp doesn't use the libs so is special. scp: $(SCPOBJS) $(HEADERS) Makefile $(CC) $(LDFLAGS) -o $@$(EXEEXT) $(SCPOBJS) # multi-binary compilation. MULTIOBJS= ifeq ($(MULTI),1) MULTIOBJS=dbmulti.o $(sort $(foreach prog, $(PROGRAMS), $($(prog)objs))) CFLAGS+=$(addprefix -DDBMULTI_, $(PROGRAMS)) -DDROPBEAR_MULTI endif dropbearmulti$(EXEEXT): $(HEADERS) $(MULTIOBJS) $(LIBTOM_DEPS) Makefile $(CC) $(LDFLAGS) -o $@ $(MULTIOBJS) $(LIBTOM_LIBS) $(LIBS) @CRYPTLIB@ multibinary: dropbearmulti$(EXEEXT) multilink: multibinary $(addprefix link, $(PROGRAMS)) link%: -rm -f $*$(EXEEXT) -ln -s dropbearmulti$(EXEEXT) $*$(EXEEXT) $(STATIC_LTC): $(OPTION_HEADERS) $(MAKE) -C libtomcrypt $(STATIC_LTM): $(OPTION_HEADERS) $(MAKE) -C libtommath .PHONY : clean sizes thisclean distclean tidy ltc-clean ltm-clean lint ltc-clean: $(MAKE) -C libtomcrypt clean ltm-clean: $(MAKE) -C libtommath clean sizes: dropbear objdump -t dropbear|grep ".text"|cut -d "." -f 2|sort -rn clean: $(LIBTOM_CLEAN) thisclean thisclean: -rm -f dropbear$(EXEEXT) dbclient$(EXEEXT) dropbearkey$(EXEEXT) \ dropbearconvert$(EXEEXT) scp$(EXEEXT) scp-progress$(EXEEXT) \ dropbearmulti$(EXEEXT) *.o *.da *.bb *.bbg *.prof distclean: clean tidy -rm -f config.h -rm -f Makefile -rm -f default_options_guard.h tidy: -rm -f *~ *.gcov */*~ lint: cd $(srcdir); ./dropbear_lint.sh ## Fuzzing targets # list of fuzz targets FUZZ_TARGETS=fuzzer-preauth fuzzer-pubkey fuzzer-verify fuzzer-preauth_nomaths fuzzer-kexdh fuzzer-kexecdh fuzzer-kexcurve25519 FUZZER_OPTIONS = $(addsuffix .options, $(FUZZ_TARGETS)) list-fuzz-targets: @echo $(FUZZ_TARGETS) # fuzzers that don't use libfuzzer, just a standalone harness that feeds inputs fuzzstandalone: FUZZLIB=fuzz-harness.o fuzzstandalone: fuzz-harness.o fuzz-targets # exclude svr-main.o to avoid duplicate main svrfuzzobjs=$(subst svr-main.o, ,$(dropbearobjs)) fuzz-harness.o: $(HEADERS) $(LIBTOM_DEPS) Makefile $(svrfuzzobjs) fuzz-common.o # build all the fuzzers. This will require fail to link unless built with # make fuzz-targets FUZZLIB=-lFuzzer.a # or similar - the library provides main(). fuzz-targets: $(FUZZ_TARGETS) $(FUZZER_OPTIONS) fuzzer-preauth: fuzzer-preauth.o fuzz-harness.o $(CXX) $(CXXFLAGS) $@.o $(LDFLAGS) $(svrfuzzobjs) -o $@$(EXEEXT) $(LIBTOM_LIBS) $(LIBS) $(FUZZLIB) @CRYPTLIB@ fuzzer-preauth_nomaths: fuzzer-preauth_nomaths.o fuzz-harness.o $(CXX) $(CXXFLAGS) $@.o $(LDFLAGS) $(svrfuzzobjs) -o $@$(EXEEXT) $(LIBTOM_LIBS) $(LIBS) $(FUZZLIB) @CRYPTLIB@ fuzzer-pubkey: fuzzer-pubkey.o fuzz-harness.o $(CXX) $(CXXFLAGS) $@.o $(LDFLAGS) $(svrfuzzobjs) -o $@$(EXEEXT) $(LIBTOM_LIBS) $(LIBS) $(FUZZLIB) @CRYPTLIB@ fuzzer-verify: fuzzer-verify.o fuzz-harness.o $(CXX) $(CXXFLAGS) $@.o $(LDFLAGS) $(svrfuzzobjs) -o $@$(EXEEXT) $(LIBTOM_LIBS) $(LIBS) $(FUZZLIB) @CRYPTLIB@ fuzzer-kexdh: fuzzer-kexdh.o fuzz-harness.o $(CXX) $(CXXFLAGS) $@.o $(LDFLAGS) $(svrfuzzobjs) -o $@$(EXEEXT) $(LIBTOM_LIBS) $(LIBS) $(FUZZLIB) @CRYPTLIB@ fuzzer-kexecdh: fuzzer-kexecdh.o fuzz-harness.o $(CXX) $(CXXFLAGS) $@.o $(LDFLAGS) $(svrfuzzobjs) -o $@$(EXEEXT) $(LIBTOM_LIBS) $(LIBS) $(FUZZLIB) @CRYPTLIB@ fuzzer-kexcurve25519: fuzzer-kexcurve25519.o fuzz-harness.o $(CXX) $(CXXFLAGS) $@.o $(LDFLAGS) $(svrfuzzobjs) -o $@$(EXEEXT) $(LIBTOM_LIBS) $(LIBS) $(FUZZLIB) @CRYPTLIB@ fuzzer-%.options: Makefile echo "[libfuzzer]" > $@ echo "max_len = 50000" >> $@ # run this to update hardcoded hostkeys for for fuzzing. # hostkeys.c is checked in to hg. fuzz-hostkeys: dropbearkey -t rsa -f keyr dropbearkey -t dss -f keyd dropbearkey -t ecdsa -size 256 -f keye dropbearkey -t ed25519 -f keyed25519 echo > hostkeys.c /usr/bin/xxd -i -a keyr >> hostkeys.c /usr/bin/xxd -i -a keye >> hostkeys.c /usr/bin/xxd -i -a keyd >> hostkeys.c /usr/bin/xxd -i -a keyed25519 >> hostkeys.c