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mod_saslauth, mod_c2s: Disable tls-server-end-point channel binding by default This channel binding method is now enabled when a hash is manually set in the config, or it attempts to discover the hash automatically if the value is the special string "auto". A related change to mod_c2s prevents complicated certificate lookups in the client connection hot path - this work now happens only when this channel binding method is used. I'm not aware of anything else that uses ssl_cfg (vs ssl_ctx). Rationale for disabling by default: - Minor performance impact in automatic cert detection - This method is weak against a leaked/stolen private key (other methods such as 'tls-exporter' would not be compromised in such a case) Rationale for keeping the implementation: - For some deployments, this may be the only method available (e.g. due to TLS offloading in another process/server).

include ../config.unix

CFLAGS+=-I$(LUA_INCDIR)

INSTALL_DATA=install -m644
TARGET?=../util/

ALL=encodings.so hashes.so net.so pposix.so signal.so table.so \
    ringbuffer.so time.so poll.so compat.so strbitop.so \
    struct.so crypto.so

ifdef RANDOM
ALL+=crand.so
endif

.PHONY: all install clean
.SUFFIXES: .c .o .so

all: $(ALL)

install: $(ALL)
	$(INSTALL_DATA) $? $(TARGET)

clean:
	rm -f $(ALL) $(patsubst %.so,%.o,$(ALL))

encodings.o: CFLAGS+=$(IDNA_FLAGS)
encodings.so: LDLIBS+=$(IDNA_LIBS)

crypto.so hashes.so: LDLIBS+=$(OPENSSL_LIBS)

crand.o: CFLAGS+=-DWITH_$(RANDOM)
crand.so: LDLIBS+=$(RANDOM_LIBS)

%.so: %.o
	$(LD) $(LDFLAGS) -o $@ $^ $(LDLIBS)