# Copyright (C) 1996-2018 Free Software Foundation, Inc.
# This file is part of the GNU C Library.

# The GNU C Library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.

# The GNU C Library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# Lesser General Public License for more details.

# You should have received a copy of the GNU Lesser General Public
# License along with the GNU C Library; if not, see
# <http://www.gnu.org/licenses/>.

#
#	Makefile for name service switch.
#
subdir	:= nss

include ../Makeconfig

headers			:= nss.h

# This is the trivial part which goes into libc itself.
routines		= nsswitch getnssent getnssent_r digits_dots \
			  valid_field valid_list_field rewrite_field \
			  $(addsuffix -lookup,$(databases)) \
			  compat-lookup nss_hash nss_files_fopen \
			  nss_readline nss_parse_line_result \
			  nss_fgetent_r

# These are the databases that go through nss dispatch.
# Caution: if you add a database here, you must add its real name
# in databases.def, too.
databases		= proto service hosts network grp pwd ethers \
			  spwd netgrp alias sgrp

ifneq (,$(filter sunrpc,$(subdirs)))
databases		+= key rpc
have-sunrpc		:= 1
else
have-sunrpc		:= 0
endif
CPPFLAGS-getent.c	= -DHAVE_SUNRPC=$(have-sunrpc)

others                  := getent makedb
install-bin             := getent makedb
makedb-modules = xmalloc hash-string
others-extras		= $(makedb-modules)
extra-objs		+= $(makedb-modules:=.o)

tests-static            = tst-field
tests-internal		= tst-field
tests			= test-netdb test-digits-dots tst-nss-getpwent bug17079 \
			  tst-nss-test1 \
			  tst-nss-test2 \
			  tst-nss-test3 \
			  tst-nss-test4 \
			  tst-nss-test5
xtests			= bug-erange

tests-container = \
			  tst-nss-db-endpwent \
			  tst-nss-db-endgrent

# Tests which need libdl
ifeq (yes,$(build-shared))
tests += tst-nss-files-hosts-erange
tests += tst-nss-files-hosts-multi
tests += tst-nss-files-hosts-getent
tests += tst-nss-files-alias-leak
endif

# If we have a thread library then we can test cancellation against
# some routines like getpwuid_r.
ifeq (yes,$(have-thread-library))
tests += tst-cancel-getpwuid_r
endif

# Specify rules for the nss_* modules.  We have some services.
services		:= files db compat

extra-libs		= $(services:%=libnss_%)
# These libraries will be built in the `others' pass rather than
# the `lib' pass, because they depend on libc.so being built already.
extra-libs-others	= $(extra-libs)

# The sources are found in the appropriate subdir.
subdir-dirs = $(services:%=nss_%)
vpath %.c $(subdir-dirs) ../locale/programs ../intl

# In RHEL we add nss_readline, nss_parse_line_result, and
# nss_files_fopen to the libnss_files-routines in order to avoid the
# case where a long running process (having never used NSS) attemps to
# load an NSS module for the first time and that NSS module needs a
# newer GLIBC_PRIVATE interface.  In effect we must make the NSS modules
# self-sufficient and not rely on a GLIBC_PRIVATE interface.
# See: https://bugzilla.redhat.com/show_bug.cgi?id=1927040
# Note: We must recompile the objects to get the correct global symbol
#       references, which is why we have the *_int.c wrappers.
libnss_files-routines	:= $(addprefix files-,$(databases)) \
			   files-initgroups files-init \
			   nss_readline_int nss_parse_line_result_int \
			   nss_files_fopen_int

libnss_db-dbs		:= $(addprefix db-,\
				       $(filter-out hosts network key alias,\
						    $(databases))) \
			   db-initgroups
libnss_db-routines	:= $(libnss_db-dbs) db-open db-init hash-string
generated		+= $(filter-out db-alias.c db-netgrp.c, \
					$(addsuffix .c,$(libnss_db-dbs)))

# See note above regarding nss_files_fopen.
libnss_compat-routines	:= $(addprefix compat-,grp pwd spwd initgroups) \
			   nisdomain \
			   nss_files_fopen_int

install-others		+= $(inst_vardbdir)/Makefile

# Build static module into libc if requested
libnss_files-inhibit-o	= $(filter-out .os,$(object-suffixes))
libnss_db-inhibit-o	= $(filter-out .os,$(object-suffixes))
libnss_compat-inhibit-o	= $(filter-out .os,$(object-suffixes))
ifeq ($(build-static-nss),yes)
routines                += $(libnss_files-routines)
static-only-routines    += $(libnss_files-routines)
tests-static		+= tst-nss-static
endif
extra-test-objs		+= nss_test1.os nss_test2.os

include ../Rules

ifeq (yes,$(have-selinux))
LDLIBS-makedb		:= -lselinux
endif

libnss-libc = $(common-objpfx)linkobj/libc.so
# Target-specific variable setting to link objects using deprecated
# RPC interfaces with the version of libc.so that makes them available
# for new links:
$(services:%=$(objpfx)libnss_%.so): libc-for-link = $(libnss-libc)

$(objpfx)libnss_db.so: $(objpfx)libnss_files.so

$(libnss_db-dbs:%=$(objpfx)%.c): $(objpfx)db-%.c: nss_files/files-%.c
	@rm -f $@.new
	(echo '#define EXTERN_PARSER';\
	 echo '#define GENERIC "../nss_db/db-XXX.c"';\
	 echo '#include "$<"') > $@.new
	mv -f $@.new $@


$(objpfx)makedb: $(makedb-modules:%=$(objpfx)%.o)

$(inst_vardbdir)/Makefile: db-Makefile $(+force)
	$(do-install)

libnss_test1.so-no-z-defs = 1
libnss_test2.so-no-z-defs = 1

rtld-tests-LDFLAGS += -Wl,--dynamic-list=nss_test.ver

libof-nss_test1 = extramodules
libof-nss_test2 = extramodules
$(objpfx)/libnss_test1.so: $(objpfx)nss_test1.os $(link-libc-deps)
	$(build-module)
$(objpfx)/libnss_test2.so: $(objpfx)nss_test2.os $(link-libc-deps)
	$(build-module)
$(objpfx)nss_test2.os : nss_test1.c
ifdef libnss_test1.so-version
$(objpfx)/libnss_test1.so$(libnss_test1.so-version): $(objpfx)/libnss_test1.so
	$(make-link)
endif
ifdef libnss_test2.so-version
$(objpfx)/libnss_test2.so$(libnss_test2.so-version): $(objpfx)/libnss_test2.so
	$(make-link)
endif
$(patsubst %,$(objpfx)%.out,$(tests)) : \
	$(objpfx)/libnss_test1.so$(libnss_test1.so-version) \
	$(objpfx)/libnss_test2.so$(libnss_test2.so-version)

ifeq (yes,$(have-thread-library))
$(objpfx)tst-cancel-getpwuid_r: $(shared-thread-library)
endif

$(objpfx)tst-nss-files-hosts-erange: $(libdl)
$(objpfx)tst-nss-files-hosts-multi: $(libdl)
$(objpfx)tst-nss-files-hosts-getent: $(libdl)
$(objpfx)tst-nss-files-alias-leak: $(libdl)
$(objpfx)tst-nss-files-alias-leak.out: $(objpfx)/libnss_files.so