10
10
-Wmissing-format-attribute -Wnormalized=nfc -Wpacked \
11
11
-Wredundant-decls -Wnested-externs -Winline -Wvla \
12
12
-Wvolatile-register-var -Woverlength-strings
14
#DEBUG:=-ggdb3 -fsanitize=address $(SANITIZE)
15
## Check which sanitizing options can be used
16
#SANITIZE:=$(foreach option,$(ALL_SANITIZE_OPTIONS),$(shell \
17
# echo 'int main(){}' | $(CC) --language=c $(option) \
18
# /dev/stdin -o /dev/null >/dev/null 2>&1 && echo $(option)))
19
# <https://developerblog.redhat.com/2014/10/16/gcc-undefined-behavior-sanitizer-ubsan/>
20
ALL_SANITIZE_OPTIONS:=-fsanitize=leak -fsanitize=undefined \
21
-fsanitize=shift -fsanitize=integer-divide-by-zero \
22
-fsanitize=unreachable -fsanitize=vla-bound -fsanitize=null \
23
-fsanitize=return -fsanitize=signed-integer-overflow \
24
-fsanitize=bounds -fsanitize=alignment \
25
-fsanitize=object-size -fsanitize=float-divide-by-zero \
26
-fsanitize=float-cast-overflow -fsanitize=nonnull-attribute \
27
-fsanitize=returns-nonnull-attribute -fsanitize=bool \
28
-fsanitize=enum -fsanitize-address-use-after-scope
14
30
# For info about _FORTIFY_SOURCE, see feature_test_macros(7)
15
# and <http://gcc.gnu.org/ml/gcc-patches/2004-09/msg02055.html>.
16
FORTIFY=-D_FORTIFY_SOURCE=2 -fstack-protector-all -fPIC
17
LINK_FORTIFY_LD=-z relro -z now
31
# and <https://gcc.gnu.org/ml/gcc-patches/2004-09/msg02055.html>.
32
FORTIFY:=-fstack-protector-all -fPIC
33
CPPFLAGS+=-D_FORTIFY_SOURCE=3
34
LINK_FORTIFY_LD:=-z relro -z now
20
37
# If BROKEN_PIE is set, do not build with -pie
23
40
LINK_FORTIFY += -pie
25
42
#COVERAGE=--coverage
26
OPTIMIZE=-Os -fno-strict-aliasing
32
USER=$(firstword $(subst :, ,$(shell getent passwd _mandos || getent passwd nobody || echo 65534)))
33
GROUP=$(firstword $(subst :, ,$(shell getent group _mandos || getent group nobody || echo 65534)))
43
OPTIMIZE:=-Os -fno-strict-aliasing
45
CPPFLAGS+=-D_FILE_OFFSET_BITS=64 -D_TIME_BITS=64
49
PKG_CONFIG?=pkg-config
51
USER:=$(firstword $(subst :, ,$(shell getent passwd _mandos \
52
|| getent passwd nobody || echo 65534)))
53
GROUP:=$(firstword $(subst :, ,$(shell getent group _mandos \
54
|| getent group nogroup || echo 65534)))
56
LINUXVERSION:=$(shell uname --kernel-release)
35
58
## Use these settings for a traditional /usr/local install
36
# PREFIX=$(DESTDIR)/usr/local
37
# CONFDIR=$(DESTDIR)/etc/mandos
38
# KEYDIR=$(DESTDIR)/etc/mandos/keys
39
# MANDIR=$(PREFIX)/man
40
# INITRAMFSTOOLS=$(DESTDIR)/etc/initramfs-tools
41
# STATEDIR=$(DESTDIR)/var/lib/mandos
42
# LIBDIR=$(PREFIX)/lib
59
# PREFIX:=$(DESTDIR)/usr/local
60
# CONFDIR:=$(DESTDIR)/etc/mandos
61
# KEYDIR:=$(DESTDIR)/etc/mandos/keys
62
# MANDIR:=$(PREFIX)/man
63
# INITRAMFSTOOLS:=$(DESTDIR)/etc/initramfs-tools
64
# DRACUTMODULE:=$(DESTDIR)/usr/lib/dracut/modules.d/90mandos
65
# STATEDIR:=$(DESTDIR)/var/lib/mandos
66
# LIBDIR:=$(PREFIX)/lib
67
# DBUSPOLICYDIR:=$(DESTDIR)/etc/dbus-1/system.d
45
70
## These settings are for a package-type install
47
CONFDIR=$(DESTDIR)/etc/mandos
48
KEYDIR=$(DESTDIR)/etc/keys/mandos
49
MANDIR=$(PREFIX)/share/man
50
INITRAMFSTOOLS=$(DESTDIR)/usr/share/initramfs-tools
51
STATEDIR=$(DESTDIR)/var/lib/mandos
71
PREFIX:=$(DESTDIR)/usr
72
CONFDIR:=$(DESTDIR)/etc/mandos
73
KEYDIR:=$(DESTDIR)/etc/keys/mandos
74
MANDIR:=$(PREFIX)/share/man
75
INITRAMFSTOOLS:=$(DESTDIR)/usr/share/initramfs-tools
76
DRACUTMODULE:=$(DESTDIR)/usr/lib/dracut/modules.d/90mandos
77
STATEDIR:=$(DESTDIR)/var/lib/mandos
54
"/usr/lib/`dpkg-architecture -qDEB_HOST_MULTIARCH 2>/dev/null`" \
80
"/usr/lib/`dpkg-architecture \
81
-qDEB_HOST_MULTIARCH 2>/dev/null`" \
55
82
"`rpm --eval='%{_libdir}' 2>/dev/null`" /usr/lib; do \
56
83
if [ -d "$$d" -a "$$d" = "$${d%/}" ]; then \
57
84
echo "$(DESTDIR)$$d"; \
88
DBUSPOLICYDIR:=$(DESTDIR)/usr/share/dbus-1/system.d
63
SYSTEMD=$(DESTDIR)$(shell pkg-config systemd --variable=systemdsystemunitdir)
91
SYSTEMD:=$(DESTDIR)$(shell $(PKG_CONFIG) systemd \
92
--variable=systemdsystemunitdir)
93
TMPFILES:=$(DESTDIR)$(shell $(PKG_CONFIG) systemd \
94
--variable=tmpfilesdir)
95
SYSUSERS:=$(DESTDIR)$(shell $(PKG_CONFIG) systemd \
96
--variable=sysusersdir)
65
GNUTLS_CFLAGS=$(shell pkg-config --cflags-only-I gnutls)
66
GNUTLS_LIBS=$(shell pkg-config --libs gnutls)
67
AVAHI_CFLAGS=$(shell pkg-config --cflags-only-I avahi-core)
68
AVAHI_LIBS=$(shell pkg-config --libs avahi-core)
69
GPGME_CFLAGS=$(shell gpgme-config --cflags; getconf LFS_CFLAGS)
70
GPGME_LIBS=$(shell gpgme-config --libs; getconf LFS_LIBS; \
98
GNUTLS_CFLAGS:=$(shell $(PKG_CONFIG) --cflags-only-I gnutls)
99
GNUTLS_LIBS:=$(shell $(PKG_CONFIG) --libs gnutls)
100
AVAHI_CFLAGS:=$(shell $(PKG_CONFIG) --cflags-only-I avahi-core)
101
AVAHI_LIBS:=$(shell $(PKG_CONFIG) --libs avahi-core)
102
GPGME_CFLAGS:=$(shell $(PKG_CONFIG) --cflags-only-I gpgme 2>/dev/null \
103
|| gpgme-config --cflags; getconf LFS_CFLAGS)
104
GPGME_LIBS:=$(shell $(PKG_CONFIG) --libs gpgme 2>/dev/null \
105
|| gpgme-config --libs; getconf LFS_LIBS; \
71
106
getconf LFS_LDFLAGS)
107
LIBNL3_CFLAGS:=$(shell $(PKG_CONFIG) --cflags-only-I libnl-route-3.0)
108
LIBNL3_LIBS:=$(shell $(PKG_CONFIG) --libs libnl-route-3.0)
109
GLIB_CFLAGS:=$(shell $(PKG_CONFIG) --cflags glib-2.0)
110
GLIB_LIBS:=$(shell $(PKG_CONFIG) --libs glib-2.0)
73
112
# Do not change these two
74
113
CFLAGS+=$(WARN) $(DEBUG) $(FORTIFY) $(COVERAGE) $(OPTIMIZE) \
75
$(LANGUAGE) $(GNUTLS_CFLAGS) $(AVAHI_CFLAGS) $(GPGME_CFLAGS) \
76
-DVERSION='"$(version)"'
77
LDFLAGS+=-Xlinker --as-needed $(COVERAGE) $(LINK_FORTIFY) $(foreach flag,$(LINK_FORTIFY_LD),-Xlinker $(flag))
114
$(LANGUAGE) -DVERSION='"$(version)"'
115
LDFLAGS+=-Xlinker --as-needed $(COVERAGE) $(LINK_FORTIFY) $(strip \
116
) $(foreach flag,$(LINK_FORTIFY_LD),-Xlinker $(flag))
79
118
# Commands to format a DocBook <refentry> document into a manual page
80
119
DOCBOOKTOMAN=$(strip cd $(dir $<); xsltproc --nonet --xinclude \
85
124
--param man.authors.section.enabled 0 \
86
125
/usr/share/xml/docbook/stylesheet/nwalsh/manpages/docbook.xsl \
88
$(MANPOST) $(notdir $@);\
89
127
if locale --all 2>/dev/null | grep --regexp='^en_US\.utf8$$' \
90
&& type man 2>/dev/null; then LANG=en_US.UTF-8 MANWIDTH=80 \
91
man --warnings --encoding=UTF-8 --local-file $(notdir $@); \
93
# DocBook-to-man post-processing to fix a '\n' escape bug
94
MANPOST=$(SED) --in-place --expression='s,\\\\en,\\en,g;s,\\n,\\en,g'
128
&& command -v man >/dev/null; then LANG=en_US.UTF-8 \
129
MANWIDTH=80 man --warnings --encoding=UTF-8 --local-file \
130
$(notdir $@); fi >/dev/null)
96
132
DOCBOOKTOHTML=$(strip xsltproc --nonet --xinclude \
97
133
--param make.year.ranges 1 \
103
139
/usr/share/xml/docbook/stylesheet/nwalsh/xhtml/docbook.xsl \
104
140
$<; $(HTMLPOST) $@)
105
141
# Fix citerefentry links
106
HTMLPOST=$(SED) --in-place \
142
HTMLPOST:=$(SED) --in-place \
107
143
--expression='s/\(<a class="citerefentry" href="\)\("><span class="citerefentry"><span class="refentrytitle">\)\([^<]*\)\(<\/span>(\)\([^)]*\)\()<\/span><\/a>\)/\1\3.\5\2\3\4\5\6/g'
109
PLUGINS=plugins.d/password-prompt plugins.d/mandos-client \
145
PLUGINS:=plugins.d/password-prompt plugins.d/mandos-client \
110
146
plugins.d/usplash plugins.d/splashy plugins.d/askpass-fifo \
111
147
plugins.d/plymouth
112
CPROGS=plugin-runner $(PLUGINS)
113
PROGS=mandos mandos-keygen mandos-ctl mandos-monitor $(CPROGS)
114
DOCS=mandos.8 mandos-keygen.8 mandos-monitor.8 mandos-ctl.8 \
148
PLUGIN_HELPERS:=plugin-helpers/mandos-client-iprouteadddel
149
CPROGS:=plugin-runner dracut-module/password-agent $(PLUGINS) \
151
PROGS:=mandos mandos-keygen mandos-ctl mandos-monitor $(CPROGS)
152
DOCS:=mandos.8 mandos-keygen.8 mandos-monitor.8 mandos-ctl.8 \
115
153
mandos.conf.5 mandos-clients.conf.5 plugin-runner.8mandos \
154
dracut-module/password-agent.8mandos \
116
155
plugins.d/mandos-client.8mandos \
117
156
plugins.d/password-prompt.8mandos plugins.d/usplash.8mandos \
118
157
plugins.d/splashy.8mandos plugins.d/askpass-fifo.8mandos \
119
158
plugins.d/plymouth.8mandos intro.8mandos
121
htmldocs=$(addsuffix .xhtml,$(DOCS))
123
objects=$(addsuffix .o,$(CPROGS))
160
htmldocs:=$(addsuffix .xhtml,$(DOCS))
162
objects:=$(addsuffix .o,$(CPROGS))
125
165
all: $(PROGS) mandos.lsm
129
171
html: $(htmldocs)
131
173
%.5: %.xml common.ent legalnotice.xml
238
289
--expression='s/\(mandos_\)[0-9.]\+\(\.orig\.tar\.gz\)/\1$(version)\2/' \
241
plugins.d/mandos-client: plugins.d/mandos-client.c
242
$(LINK.c) $^ -lrt $(GNUTLS_LIBS) $(AVAHI_LIBS) $(strip\
243
) $(GPGME_LIBS) $(LOADLIBES) $(LDLIBS) -o $@
245
.PHONY : all doc html clean distclean mostlyclean maintainer-clean \
246
check run-client run-server install install-html \
247
install-server install-client-nokey install-client uninstall \
248
uninstall-server uninstall-client purge purge-server \
292
# Need to add the GnuTLS, Avahi and GPGME libraries
293
plugins.d/mandos-client: CFLAGS += $(GNUTLS_CFLAGS) $(strip \
294
) $(AVAHI_CFLAGS) $(GPGME_CFLAGS)
295
plugins.d/mandos-client: LDLIBS += $(GNUTLS_LIBS) $(strip \
296
) $(AVAHI_LIBS) $(GPGME_LIBS)
298
# Need to add the libnl-route library
299
plugin-helpers/mandos-client-iprouteadddel: CFLAGS += $(LIBNL3_CFLAGS)
300
plugin-helpers/mandos-client-iprouteadddel: LDLIBS += $(LIBNL3_LIBS)
302
# Need to add the GLib and pthread libraries
303
dracut-module/password-agent: CFLAGS += $(GLIB_CFLAGS)
304
# Note: -lpthread is unnecessary with the GNU C library 2.34 or later
305
dracut-module/password-agent: LDLIBS += $(GLIB_LIBS) -lpthread
252
309
-rm --force $(CPROGS) $(objects) $(htmldocs) $(DOCS) core
255
314
mostlyclean: clean
315
.PHONY: maintainer-clean
256
316
maintainer-clean: clean
257
317
-rm --force --recursive keydir confdir statedir
261
322
./mandos-ctl --check
323
./mandos-keygen --version
324
./plugin-runner --version
325
./plugin-helpers/mandos-client-iprouteadddel --version
326
./dracut-module/password-agent --test
263
328
# Run the client with a local config and key
264
run-client: all keydir/seckey.txt keydir/pubkey.txt
265
@echo "###################################################################"
266
@echo "# The following error messages are harmless and can be safely #"
267
@echo "# ignored. The messages are caused by not running as root, but #"
268
@echo "# you should NOT run \"make run-client\" as root unless you also #"
269
@echo "# unpacked and compiled Mandos as root, which is NOT recommended. #"
270
@echo "# From plugin-runner: setuid: Operation not permitted #"
271
@echo "# From askpass-fifo: mkfifo: Permission denied #"
272
@echo "# From mandos-client: setuid: Operation not permitted #"
273
@echo "# seteuid: Operation not permitted #"
274
@echo "# klogctl: Operation not permitted #"
275
@echo "###################################################################"
330
run-client: all keydir/seckey.txt keydir/pubkey.txt \
331
keydir/tls-privkey.pem keydir/tls-pubkey.pem
332
@echo '######################################################'
333
@echo '# The following error messages are harmless and can #'
334
@echo '# be safely ignored: #'
335
@echo '## From plugin-runner: #'
336
@echo '# setgid: Operation not permitted #'
337
@echo '# setuid: Operation not permitted #'
338
@echo '## From askpass-fifo: #'
339
@echo '# mkfifo: Permission denied #'
340
@echo '## From mandos-client: #'
341
@echo '# Failed to raise privileges: Operation not permi... #'
342
@echo '# Warning: network hook "*" exited with status * #'
343
@echo '# ioctl SIOCSIFFLAGS +IFF_UP: Operation not permi... #'
344
@echo '# Failed to bring up interface "*": Operation not... #'
346
@echo '# (The messages are caused by not running as root, #'
347
@echo '# but you should NOT run "make run-client" as root #'
348
@echo '# unless you also unpacked and compiled Mandos as #'
349
@echo '# root, which is also NOT recommended.) #'
350
@echo '######################################################'
351
# We set GNOME_KEYRING_CONTROL to block pam_gnome_keyring
276
352
./plugin-runner --plugin-dir=plugins.d \
353
--plugin-helper-dir=plugin-helpers \
277
354
--config-file=plugin-runner.conf \
278
--options-for=mandos-client:--seckey=keydir/seckey.txt,--pubkey=keydir/pubkey.txt,--network-hook-dir=network-hooks.d \
355
--options-for=mandos-client:--seckey=keydir/seckey.txt,--pubkey=keydir/pubkey.txt,--tls-privkey=keydir/tls-privkey.pem,--tls-pubkey=keydir/tls-pubkey.pem,--network-hook-dir=network-hooks.d \
356
--env-for=mandos-client:GNOME_KEYRING_CONTROL= \
281
359
# Used by run-client
282
keydir/seckey.txt keydir/pubkey.txt: mandos-keygen
360
keydir/seckey.txt keydir/pubkey.txt keydir/tls-privkey.pem keydir/tls-pubkey.pem: mandos-keygen
283
361
install --directory keydir
284
362
./mandos-keygen --dir keydir --force
363
if ! [ -e keydir/tls-privkey.pem ]; then \
364
install --mode=u=rw /dev/null keydir/tls-privkey.pem; \
366
if ! [ -e keydir/tls-pubkey.pem ]; then \
367
install --mode=u=rw /dev/null keydir/tls-pubkey.pem; \
286
370
# Run the server with a local config
287
372
run-server: confdir/mandos.conf confdir/clients.conf statedir
288
373
./mandos --debug --no-dbus --configdir=confdir \
289
374
--statedir=statedir $(SERVERARGS)
292
377
confdir/mandos.conf: mandos.conf
293
378
install --directory confdir
294
379
install --mode=u=rw,go=r $^ $@
295
confdir/clients.conf: clients.conf keydir/seckey.txt
380
confdir/clients.conf: clients.conf keydir/seckey.txt keydir/tls-pubkey.pem
296
381
install --directory confdir
297
382
install --mode=u=rw $< $@
298
383
# Add a client password
299
./mandos-keygen --dir keydir --password >> $@
384
./mandos-keygen --dir keydir --password --no-ssh >> $@
301
386
install --directory statedir
303
389
install: install-server install-client-nokey
305
392
install-html: html
306
393
install --directory $(htmldir)
307
394
install --mode=u=rw,go=r --target-directory=$(htmldir) \
397
.PHONY: install-server
310
398
install-server: doc
311
399
install --directory $(CONFDIR)
312
400
if install --directory --mode=u=rwx --owner=$(USER) \
349
447
gzip --best --to-stdout intro.8mandos \
350
448
> $(MANDIR)/man8/intro.8mandos.gz
450
.PHONY: install-client-nokey
352
451
install-client-nokey: all doc
353
452
install --directory $(LIBDIR)/mandos $(CONFDIR)
354
453
install --directory --mode=u=rwx $(KEYDIR) \
355
$(LIBDIR)/mandos/plugins.d
454
$(LIBDIR)/mandos/plugins.d \
455
$(LIBDIR)/mandos/plugin-helpers
456
if [ "$(SYSUSERS)" != "$(DESTDIR)" \
457
-a -d "$(SYSUSERS)" ]; then \
458
install --mode=u=rw,go=r sysusers.d-mandos.conf \
459
$(SYSUSERS)/mandos-client.conf; \
356
461
if [ "$(CONFDIR)" != "$(LIBDIR)/mandos" ]; then \
357
462
install --mode=u=rwx \
358
--directory "$(CONFDIR)/plugins.d"; \
463
--directory "$(CONFDIR)/plugins.d" \
464
"$(CONFDIR)/plugin-helpers"; \
360
466
install --mode=u=rwx,go=rx --directory \
361
467
"$(CONFDIR)/network-hooks.d"
362
468
install --mode=u=rwx,go=rx \
363
469
--target-directory=$(LIBDIR)/mandos plugin-runner
470
install --mode=u=rwx,go=rx \
471
--target-directory=$(LIBDIR)/mandos \
472
mandos-to-cryptroot-unlock
364
473
install --mode=u=rwx,go=rx --target-directory=$(PREFIX)/sbin \
366
475
install --mode=u=rwx,go=rx \
381
490
install --mode=u=rwxs,go=rx \
382
491
--target-directory=$(LIBDIR)/mandos/plugins.d \
383
492
plugins.d/plymouth
493
install --mode=u=rwx,go=rx \
494
--target-directory=$(LIBDIR)/mandos/plugin-helpers \
495
plugin-helpers/mandos-client-iprouteadddel
384
496
install initramfs-tools-hook \
385
497
$(INITRAMFSTOOLS)/hooks/mandos
386
install --mode=u=rw,go=r initramfs-tools-hook-conf \
387
$(INITRAMFSTOOLS)/conf-hooks.d/mandos
498
install --mode=u=rw,go=r initramfs-tools-conf \
499
$(INITRAMFSTOOLS)/conf.d/mandos-conf
500
install --mode=u=rw,go=r initramfs-tools-conf-hook \
501
$(INITRAMFSTOOLS)/conf-hooks.d/zz-mandos
388
502
install initramfs-tools-script \
389
503
$(INITRAMFSTOOLS)/scripts/init-premount/mandos
504
install initramfs-tools-script-stop \
505
$(INITRAMFSTOOLS)/scripts/local-premount/mandos
506
install --directory $(DRACUTMODULE)
507
install --mode=u=rw,go=r --target-directory=$(DRACUTMODULE) \
508
dracut-module/ask-password-mandos.path \
509
dracut-module/ask-password-mandos.service
510
install --mode=u=rwxs,go=rx \
511
--target-directory=$(DRACUTMODULE) \
512
dracut-module/module-setup.sh \
513
dracut-module/cmdline-mandos.sh \
514
dracut-module/password-agent
390
515
install --mode=u=rw,go=r plugin-runner.conf $(CONFDIR)
391
516
gzip --best --to-stdout mandos-keygen.8 \
392
517
> $(MANDIR)/man8/mandos-keygen.8.gz
404
529
> $(MANDIR)/man8/askpass-fifo.8mandos.gz
405
530
gzip --best --to-stdout plugins.d/plymouth.8mandos \
406
531
> $(MANDIR)/man8/plymouth.8mandos.gz
532
gzip --best --to-stdout dracut-module/password-agent.8mandos \
533
> $(MANDIR)/man8/password-agent.8mandos.gz
535
.PHONY: install-client
408
536
install-client: install-client-nokey
409
537
# Post-installation stuff
410
538
-$(PREFIX)/sbin/mandos-keygen --dir "$(KEYDIR)"
411
update-initramfs -k all -u
539
if command -v update-initramfs >/dev/null; then \
540
update-initramfs -k all -u; \
541
elif command -v dracut >/dev/null; then \
542
for initrd in $(DESTDIR)/boot/initr*-$(LINUXVERSION); do \
543
if [ -w "$$initrd" ]; then \
544
chmod go-r "$$initrd"; \
545
dracut --force "$$initrd"; \
412
549
echo "Now run mandos-keygen --password --dir $(KEYDIR)"
414
552
uninstall: uninstall-server uninstall-client
554
.PHONY: uninstall-server
416
555
uninstall-server:
417
556
-rm --force $(PREFIX)/sbin/mandos \
418
557
$(PREFIX)/sbin/mandos-ctl \
449
595
$(MANDIR)/man8/splashy.8mandos.gz \
450
596
$(MANDIR)/man8/askpass-fifo.8mandos.gz \
451
597
$(MANDIR)/man8/plymouth.8mandos.gz \
598
$(MANDIR)/man8/password-agent.8mandos.gz \
452
599
-rmdir $(LIBDIR)/mandos/plugins.d $(CONFDIR)/plugins.d \
453
$(LIBDIR)/mandos $(CONFDIR) $(KEYDIR)
454
update-initramfs -k all -u
600
$(LIBDIR)/mandos $(CONFDIR) $(KEYDIR) $(DRACUTMODULE)
601
if command -v update-initramfs >/dev/null; then \
602
update-initramfs -k all -u; \
603
elif command -v dracut >/dev/null; then \
604
for initrd in $(DESTDIR)/boot/initr*-$(LINUXVERSION); do \
605
test -w "$$initrd" && dracut --force "$$initrd"; \
456
610
purge: purge-server purge-client
458
613
purge-server: uninstall-server
459
614
-rm --force $(CONFDIR)/mandos.conf $(CONFDIR)/clients.conf \
460
615
$(DESTDIR)/etc/dbus-1/system.d/mandos.conf