/mandos/trunk

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  • Committer: Teddy Hogeborn
  • Date: 2024-11-17 16:53:00 UTC
  • Revision ID: teddy@recompile.se-20241117165300-02hxm96s8cj9528e
mandos: Avoid closing configured server network socket

If we are passed a pre-created created network socket as a file
descriptor, we must avoid later closing it (when stdin, stdout and
stderr are dup2()ed over with /dev/null) by making sure that the
network file descriptor is not 0, 1, or 2, by creating a new file
descriptor if necessary.

However, when we create a new file descriptor we must check that the
new file descriptor is not 0, 1, or 2 either, and try again until we
get a suitable file descriptor.

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Makefile
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# For info about _FORTIFY_SOURCE, see feature_test_macros(7)
31
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# and <https://gcc.gnu.org/ml/gcc-patches/2004-09/msg02055.html>.
32
 
FORTIFY:=-D_FORTIFY_SOURCE=2 -fstack-protector-all -fPIC
 
32
FORTIFY:=-fstack-protector-all -fPIC
 
33
CPPFLAGS+=-D_FORTIFY_SOURCE=3
33
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LINK_FORTIFY_LD:=-z relro -z now
34
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LINK_FORTIFY:=
35
36
 
41
42
#COVERAGE=--coverage
42
43
OPTIMIZE:=-Os -fno-strict-aliasing
43
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LANGUAGE:=-std=gnu11
44
 
FEATURES:=-D_FILE_OFFSET_BITS=64
 
45
CPPFLAGS+=-D_FILE_OFFSET_BITS=64 -D_TIME_BITS=64
45
46
htmldir:=man
46
 
version:=1.8.6
 
47
version:=1.8.17
47
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SED:=sed
48
49
PKG_CONFIG?=pkg-config
49
50
 
56
57
 
57
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## Use these settings for a traditional /usr/local install
58
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# PREFIX:=$(DESTDIR)/usr/local
 
60
# BINDIR:=$(PREFIX)/sbin
59
61
# CONFDIR:=$(DESTDIR)/etc/mandos
60
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# KEYDIR:=$(DESTDIR)/etc/mandos/keys
61
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# MANDIR:=$(PREFIX)/man
63
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# DRACUTMODULE:=$(DESTDIR)/usr/lib/dracut/modules.d/90mandos
64
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# STATEDIR:=$(DESTDIR)/var/lib/mandos
65
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# LIBDIR:=$(PREFIX)/lib
 
68
# DBUSPOLICYDIR:=$(DESTDIR)/etc/dbus-1/system.d
66
69
##
67
70
 
68
71
## These settings are for a package-type install
69
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PREFIX:=$(DESTDIR)/usr
 
73
BINDIR:=$(PREFIX)/sbin
70
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CONFDIR:=$(DESTDIR)/etc/mandos
71
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KEYDIR:=$(DESTDIR)/etc/keys/mandos
72
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MANDIR:=$(PREFIX)/share/man
83
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                        break; \
84
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                fi; \
85
89
        done)
 
90
DBUSPOLICYDIR:=$(DESTDIR)/usr/share/dbus-1/system.d
86
91
##
87
92
 
88
93
SYSTEMD:=$(DESTDIR)$(shell $(PKG_CONFIG) systemd \
89
94
                        --variable=systemdsystemunitdir)
90
95
TMPFILES:=$(DESTDIR)$(shell $(PKG_CONFIG) systemd \
91
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                        --variable=tmpfilesdir)
 
97
SYSUSERS:=$(DESTDIR)$(shell $(PKG_CONFIG) systemd \
 
98
                        --variable=sysusersdir)
92
99
 
93
100
GNUTLS_CFLAGS:=$(shell $(PKG_CONFIG) --cflags-only-I gnutls)
94
101
GNUTLS_LIBS:=$(shell $(PKG_CONFIG) --libs gnutls)
95
102
AVAHI_CFLAGS:=$(shell $(PKG_CONFIG) --cflags-only-I avahi-core)
96
103
AVAHI_LIBS:=$(shell $(PKG_CONFIG) --libs avahi-core)
97
 
GPGME_CFLAGS:=$(shell gpgme-config --cflags; getconf LFS_CFLAGS)
98
 
GPGME_LIBS:=$(shell gpgme-config --libs; getconf LFS_LIBS; \
 
104
GPGME_CFLAGS:=$(shell $(PKG_CONFIG) --cflags-only-I gpgme 2>/dev/null \
 
105
        || gpgme-config --cflags; getconf LFS_CFLAGS)
 
106
GPGME_LIBS:=$(shell $(PKG_CONFIG) --libs gpgme 2>/dev/null \
 
107
        || gpgme-config --libs; getconf LFS_LIBS; \
99
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        getconf LFS_LDFLAGS)
100
109
LIBNL3_CFLAGS:=$(shell $(PKG_CONFIG) --cflags-only-I libnl-route-3.0)
101
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LIBNL3_LIBS:=$(shell $(PKG_CONFIG) --libs libnl-route-3.0)
104
113
 
105
114
# Do not change these two
106
115
CFLAGS+=$(WARN) $(DEBUG) $(FORTIFY) $(COVERAGE) $(OPTIMIZE) \
107
 
        $(LANGUAGE) $(FEATURES) -DVERSION='"$(version)"'
 
116
        $(LANGUAGE) -DVERSION='"$(version)"'
108
117
LDFLAGS+=-Xlinker --as-needed $(COVERAGE) $(LINK_FORTIFY) $(strip \
109
118
        ) $(foreach flag,$(LINK_FORTIFY_LD),-Xlinker $(flag))
110
119
 
154
163
 
155
164
objects:=$(addsuffix .o,$(CPROGS))
156
165
 
 
166
.PHONY: all
157
167
all: $(PROGS) mandos.lsm
158
168
 
 
169
.PHONY: doc
159
170
doc: $(DOCS)
160
171
 
 
172
.PHONY: html
161
173
html: $(htmldocs)
162
174
 
163
175
%.5: %.xml common.ent legalnotice.xml
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                --expression='s/\(mandos_\)[0-9.]\+\(\.orig\.tar\.gz\)/\1$(version)\2/' \
280
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                $@)
281
293
 
 
294
# Does the linker support the --no-warn-execstack option?
 
295
ifeq ($(shell echo 'int main(){}'|$(CC) --language=c /dev/stdin -o /dev/null -Xlinker --no-warn-execstack >/dev/null 2>&1 && echo yes),yes)
 
296
# These programs use nested functions, which uses an executable stack
 
297
plugin-runner: LDFLAGS += -Xlinker --no-warn-execstack
 
298
dracut-module/password-agent: LDFLAGS += -Xlinker --no-warn-execstack
 
299
plugins.d/password-prompt: LDFLAGS += -Xlinker --no-warn-execstack
 
300
plugins.d/mandos-client: LDFLAGS += -Xlinker --no-warn-execstack
 
301
plugins.d/plymouth: LDFLAGS += -Xlinker --no-warn-execstack
 
302
endif
 
303
 
282
304
# Need to add the GnuTLS, Avahi and GPGME libraries
283
 
plugins.d/mandos-client: plugins.d/mandos-client.c
284
 
        $(LINK.c) $^ $(GNUTLS_CFLAGS) $(AVAHI_CFLAGS) $(strip\
285
 
                ) $(GPGME_CFLAGS) $(GNUTLS_LIBS) $(strip\
286
 
                ) $(AVAHI_LIBS) $(GPGME_LIBS) $(LOADLIBES) $(strip\
287
 
                ) $(LDLIBS) -o $@
 
305
plugins.d/mandos-client: CFLAGS += $(GNUTLS_CFLAGS) $(strip \
 
306
        ) $(AVAHI_CFLAGS) $(GPGME_CFLAGS)
 
307
plugins.d/mandos-client: LDLIBS += $(GNUTLS_LIBS) $(strip \
 
308
        ) $(AVAHI_LIBS) $(GPGME_LIBS)
288
309
 
289
310
# Need to add the libnl-route library
290
 
plugin-helpers/mandos-client-iprouteadddel: plugin-helpers/mandos-client-iprouteadddel.c
291
 
        $(LINK.c) $(LIBNL3_CFLAGS) $^ $(LIBNL3_LIBS) $(strip\
292
 
                ) $(LOADLIBES) $(LDLIBS) -o $@
 
311
plugin-helpers/mandos-client-iprouteadddel: CFLAGS += $(LIBNL3_CFLAGS)
 
312
plugin-helpers/mandos-client-iprouteadddel: LDLIBS += $(LIBNL3_LIBS)
293
313
 
294
314
# Need to add the GLib and pthread libraries
295
 
dracut-module/password-agent: dracut-module/password-agent.c
296
 
        $(LINK.c) $(GLIB_CFLAGS) $^ $(GLIB_LIBS) -lpthread $(strip\
297
 
                ) $(LOADLIBES) $(LDLIBS) -o $@
298
 
 
299
 
.PHONY : all doc html clean distclean mostlyclean maintainer-clean \
300
 
        check run-client run-server install install-html \
301
 
        install-server install-client-nokey install-client uninstall \
302
 
        uninstall-server uninstall-client purge purge-server \
303
 
        purge-client
304
 
 
 
315
dracut-module/password-agent: CFLAGS += $(GLIB_CFLAGS)
 
316
# Note: -lpthread is unnecessary with the GNU C library 2.34 or later
 
317
dracut-module/password-agent: LDLIBS += $(GLIB_LIBS) -lpthread
 
318
 
 
319
.PHONY: clean
305
320
clean:
306
321
        -rm --force $(CPROGS) $(objects) $(htmldocs) $(DOCS) core
307
322
 
 
323
.PHONY: distclean
308
324
distclean: clean
 
325
.PHONY: mostlyclean
309
326
mostlyclean: clean
 
327
.PHONY: maintainer-clean
310
328
maintainer-clean: clean
311
329
        -rm --force --recursive keydir confdir statedir
312
330
 
 
331
.PHONY: check
313
332
check: all
314
333
        ./mandos --check
315
334
        ./mandos-ctl --check
319
338
        ./dracut-module/password-agent --test
320
339
 
321
340
# Run the client with a local config and key
 
341
.PHONY: run-client
322
342
run-client: all keydir/seckey.txt keydir/pubkey.txt \
323
343
                        keydir/tls-privkey.pem keydir/tls-pubkey.pem
324
344
        @echo '######################################################'
352
372
keydir/seckey.txt keydir/pubkey.txt keydir/tls-privkey.pem keydir/tls-pubkey.pem: mandos-keygen
353
373
        install --directory keydir
354
374
        ./mandos-keygen --dir keydir --force
 
375
        if ! [ -e keydir/tls-privkey.pem ]; then \
 
376
                install --mode=u=rw /dev/null keydir/tls-privkey.pem; \
 
377
        fi
 
378
        if ! [ -e keydir/tls-pubkey.pem ]; then \
 
379
                install --mode=u=rw /dev/null keydir/tls-pubkey.pem; \
 
380
        fi
355
381
 
356
382
# Run the server with a local config
 
383
.PHONY: run-server
357
384
run-server: confdir/mandos.conf confdir/clients.conf statedir
358
385
        ./mandos --debug --no-dbus --configdir=confdir \
359
386
                --statedir=statedir $(SERVERARGS)
360
387
 
361
388
# Used by run-server
362
389
confdir/mandos.conf: mandos.conf
363
 
        install --directory confdir
364
 
        install --mode=u=rw,go=r $^ $@
 
390
        install -D --mode=u=rw,go=r $^ $@
365
391
confdir/clients.conf: clients.conf keydir/seckey.txt keydir/tls-pubkey.pem
366
 
        install --directory confdir
367
 
        install --mode=u=rw $< $@
 
392
        install -D --mode=u=rw $< $@
368
393
# Add a client password
369
394
        ./mandos-keygen --dir keydir --password --no-ssh >> $@
370
395
statedir:
371
396
        install --directory statedir
372
397
 
 
398
.PHONY: install
373
399
install: install-server install-client-nokey
374
400
 
 
401
.PHONY: install-html
375
402
install-html: html
376
 
        install --directory $(htmldir)
377
 
        install --mode=u=rw,go=r --target-directory=$(htmldir) \
 
403
        install -D --mode=u=rw,go=r --target-directory=$(htmldir) \
378
404
                $(htmldocs)
379
405
 
 
406
.PHONY: install-server
380
407
install-server: doc
381
 
        install --directory $(CONFDIR)
382
408
        if install --directory --mode=u=rwx --owner=$(USER) \
383
409
                --group=$(GROUP) $(STATEDIR); then \
384
410
                :; \
385
411
        elif install --directory --mode=u=rwx $(STATEDIR); then \
386
412
                chown -- $(USER):$(GROUP) $(STATEDIR) || :; \
387
413
        fi
388
 
        if [ "$(TMPFILES)" != "$(DESTDIR)" \
389
 
                        -a -d "$(TMPFILES)" ]; then \
390
 
                install --mode=u=rw,go=r tmpfiles.d-mandos.conf \
 
414
        if [ "$(TMPFILES)" != "$(DESTDIR)" ]; then \
 
415
                install -D --mode=u=rw,go=r tmpfiles.d-mandos.conf \
391
416
                        $(TMPFILES)/mandos.conf; \
392
417
        fi
393
 
        install --mode=u=rwx,go=rx mandos $(PREFIX)/sbin/mandos
394
 
        install --mode=u=rwx,go=rx --target-directory=$(PREFIX)/sbin \
 
418
        if [ "$(SYSUSERS)" != "$(DESTDIR)" ]; then \
 
419
                install -D --mode=u=rw,go=r sysusers.d-mandos.conf \
 
420
                        $(SYSUSERS)/mandos.conf; \
 
421
        fi
 
422
        install --directory $(BINDIR)
 
423
        install --mode=u=rwx,go=rx --target-directory=$(BINDIR) mandos
 
424
        install --mode=u=rwx,go=rx --target-directory=$(BINDIR) \
395
425
                mandos-ctl
396
 
        install --mode=u=rwx,go=rx --target-directory=$(PREFIX)/sbin \
 
426
        install --mode=u=rwx,go=rx --target-directory=$(BINDIR) \
397
427
                mandos-monitor
 
428
        install --directory $(CONFDIR)
398
429
        install --mode=u=rw,go=r --target-directory=$(CONFDIR) \
399
430
                mandos.conf
400
431
        install --mode=u=rw --target-directory=$(CONFDIR) \
401
432
                clients.conf
402
 
        install --mode=u=rw,go=r dbus-mandos.conf \
403
 
                $(DESTDIR)/etc/dbus-1/system.d/mandos.conf
404
 
        install --mode=u=rwx,go=rx init.d-mandos \
 
433
        install -D --mode=u=rw,go=r dbus-mandos.conf \
 
434
                $(DBUSPOLICYDIR)/mandos.conf
 
435
        install -D --mode=u=rwx,go=rx init.d-mandos \
405
436
                $(DESTDIR)/etc/init.d/mandos
406
 
        if [ "$(SYSTEMD)" != "$(DESTDIR)" -a -d "$(SYSTEMD)" ]; then \
407
 
                install --mode=u=rw,go=r mandos.service $(SYSTEMD); \
 
437
        if [ "$(SYSTEMD)" != "$(DESTDIR)" ]; then \
 
438
                install -D --mode=u=rw,go=r mandos.service \
 
439
                        $(SYSTEMD); \
408
440
        fi
409
 
        install --mode=u=rw,go=r default-mandos \
 
441
        install -D --mode=u=rw,go=r default-mandos \
410
442
                $(DESTDIR)/etc/default/mandos
411
443
        if [ -z $(DESTDIR) ]; then \
412
444
                update-rc.d mandos defaults 25 15;\
413
445
        fi
 
446
        install --directory $(MANDIR)/man8 $(MANDIR)/man5
414
447
        gzip --best --to-stdout mandos.8 \
415
448
                > $(MANDIR)/man8/mandos.8.gz
416
449
        gzip --best --to-stdout mandos-monitor.8 \
424
457
        gzip --best --to-stdout intro.8mandos \
425
458
                > $(MANDIR)/man8/intro.8mandos.gz
426
459
 
 
460
.PHONY: install-client-nokey
427
461
install-client-nokey: all doc
428
 
        install --directory $(LIBDIR)/mandos $(CONFDIR)
429
462
        install --directory --mode=u=rwx $(KEYDIR) \
430
463
                $(LIBDIR)/mandos/plugins.d \
431
464
                $(LIBDIR)/mandos/plugin-helpers
 
465
        if [ "$(SYSUSERS)" != "$(DESTDIR)" ]; then \
 
466
                install -D --mode=u=rw,go=r sysusers.d-mandos.conf \
 
467
                        $(SYSUSERS)/mandos-client.conf; \
 
468
        fi
432
469
        if [ "$(CONFDIR)" != "$(LIBDIR)/mandos" ]; then \
433
 
                install --mode=u=rwx \
434
 
                        --directory "$(CONFDIR)/plugins.d" \
 
470
                install --directory \
 
471
                        --mode=u=rwx "$(CONFDIR)/plugins.d" \
435
472
                        "$(CONFDIR)/plugin-helpers"; \
436
473
        fi
437
 
        install --mode=u=rwx,go=rx --directory \
 
474
        install --directory --mode=u=rwx,go=rx \
438
475
                "$(CONFDIR)/network-hooks.d"
439
476
        install --mode=u=rwx,go=rx \
440
477
                --target-directory=$(LIBDIR)/mandos plugin-runner
441
478
        install --mode=u=rwx,go=rx \
442
479
                --target-directory=$(LIBDIR)/mandos \
443
480
                mandos-to-cryptroot-unlock
444
 
        install --mode=u=rwx,go=rx --target-directory=$(PREFIX)/sbin \
 
481
        install --directory $(BINDIR)
 
482
        install --mode=u=rwx,go=rx --target-directory=$(BINDIR) \
445
483
                mandos-keygen
446
484
        install --mode=u=rwx,go=rx \
447
485
                --target-directory=$(LIBDIR)/mandos/plugins.d \
464
502
        install --mode=u=rwx,go=rx \
465
503
                --target-directory=$(LIBDIR)/mandos/plugin-helpers \
466
504
                plugin-helpers/mandos-client-iprouteadddel
467
 
        install initramfs-tools-hook \
 
505
        install -D initramfs-tools-hook \
468
506
                $(INITRAMFSTOOLS)/hooks/mandos
469
 
        install --mode=u=rw,go=r initramfs-tools-conf \
 
507
        install -D --mode=u=rw,go=r initramfs-tools-conf \
470
508
                $(INITRAMFSTOOLS)/conf.d/mandos-conf
471
 
        install --mode=u=rw,go=r initramfs-tools-conf-hook \
 
509
        install -D --mode=u=rw,go=r initramfs-tools-conf-hook \
472
510
                $(INITRAMFSTOOLS)/conf-hooks.d/zz-mandos
473
 
        install initramfs-tools-script \
 
511
        install -D initramfs-tools-script \
474
512
                $(INITRAMFSTOOLS)/scripts/init-premount/mandos
475
 
        install initramfs-tools-script-stop \
 
513
        install -D initramfs-tools-script-stop \
476
514
                $(INITRAMFSTOOLS)/scripts/local-premount/mandos
477
 
        install --directory $(DRACUTMODULE)
478
 
        install --mode=u=rw,go=r --target-directory=$(DRACUTMODULE) \
 
515
        install -D --mode=u=rw,go=r \
 
516
                --target-directory=$(DRACUTMODULE) \
479
517
                dracut-module/ask-password-mandos.path \
480
518
                dracut-module/ask-password-mandos.service
481
519
        install --mode=u=rwxs,go=rx \
484
522
                dracut-module/cmdline-mandos.sh \
485
523
                dracut-module/password-agent
486
524
        install --mode=u=rw,go=r plugin-runner.conf $(CONFDIR)
 
525
        install --directory $(MANDIR)/man8
487
526
        gzip --best --to-stdout mandos-keygen.8 \
488
527
                > $(MANDIR)/man8/mandos-keygen.8.gz
489
528
        gzip --best --to-stdout plugin-runner.8mandos \
503
542
        gzip --best --to-stdout dracut-module/password-agent.8mandos \
504
543
                > $(MANDIR)/man8/password-agent.8mandos.gz
505
544
 
 
545
.PHONY: install-client
506
546
install-client: install-client-nokey
507
547
# Post-installation stuff
508
 
        -$(PREFIX)/sbin/mandos-keygen --dir "$(KEYDIR)"
 
548
        -$(BINDIR)/mandos-keygen --dir "$(KEYDIR)"
509
549
        if command -v update-initramfs >/dev/null; then \
510
550
            update-initramfs -k all -u; \
511
551
        elif command -v dracut >/dev/null; then \
518
558
        fi
519
559
        echo "Now run mandos-keygen --password --dir $(KEYDIR)"
520
560
 
 
561
.PHONY: uninstall
521
562
uninstall: uninstall-server uninstall-client
522
563
 
 
564
.PHONY: uninstall-server
523
565
uninstall-server:
524
 
        -rm --force $(PREFIX)/sbin/mandos \
525
 
                $(PREFIX)/sbin/mandos-ctl \
526
 
                $(PREFIX)/sbin/mandos-monitor \
 
566
        -rm --force $(BINDIR)/mandos \
 
567
                $(BINDIR)/mandos-ctl \
 
568
                $(BINDIR)/mandos-monitor \
527
569
                $(MANDIR)/man8/mandos.8.gz \
528
570
                $(MANDIR)/man8/mandos-monitor.8.gz \
529
571
                $(MANDIR)/man8/mandos-ctl.8.gz \
532
574
        update-rc.d -f mandos remove
533
575
        -rmdir $(CONFDIR)
534
576
 
 
577
.PHONY: uninstall-client
535
578
uninstall-client:
536
579
# Refuse to uninstall client if /etc/crypttab is explicitly configured
537
580
# to use it.
538
581
        ! grep --regexp='^ *[^ #].*keyscript=[^,=]*/mandos/' \
539
582
                $(DESTDIR)/etc/crypttab
540
 
        -rm --force $(PREFIX)/sbin/mandos-keygen \
 
583
        -rm --force $(BINDIR)/mandos-keygen \
541
584
                $(LIBDIR)/mandos/plugin-runner \
542
585
                $(LIBDIR)/mandos/plugins.d/password-prompt \
543
586
                $(LIBDIR)/mandos/plugins.d/mandos-client \
573
616
            done; \
574
617
        fi
575
618
 
 
619
.PHONY: purge
576
620
purge: purge-server purge-client
577
621
 
 
622
.PHONY: purge-server
578
623
purge-server: uninstall-server
579
624
        -rm --force $(CONFDIR)/mandos.conf $(CONFDIR)/clients.conf \
580
625
                $(DESTDIR)/etc/dbus-1/system.d/mandos.conf
581
626
                $(DESTDIR)/etc/default/mandos \
582
627
                $(DESTDIR)/etc/init.d/mandos \
583
 
                $(SYSTEMD)/mandos.service \
584
628
                $(DESTDIR)/run/mandos.pid \
585
629
                $(DESTDIR)/var/run/mandos.pid
 
630
        if [ "$(SYSTEMD)" != "$(DESTDIR)" -a -d "$(SYSTEMD)" ]; then \
 
631
                -rm --force -- $(SYSTEMD)/mandos.service; \
 
632
        fi
586
633
        -rmdir $(CONFDIR)
587
634
 
 
635
.PHONY: purge-client
588
636
purge-client: uninstall-client
589
637
        -shred --remove $(KEYDIR)/seckey.txt $(KEYDIR)/tls-privkey.pem
590
638
        -rm --force $(CONFDIR)/plugin-runner.conf \