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  • Committer: Teddy Hogeborn
  • Date: 2019-07-14 22:39:15 UTC
  • Revision ID: teddy@recompile.se-20190714223915-aqjkms3t3taa6tye
Only use sanitizing options when debugging

The C compiler's sanitizing options introduce code in the output
binary which is fragile and not very security conscious.  It has
become clear that sanitizing is only really meant for use while
debugging.

As a side effect, this makes compilation faster, as the Makefile, for
production builds, no longer runs the compiler repeatedly to find all
its currently supported sanitizing options.

* Makefile (DEBUG): Add "$(SANITIZE)".
  (SANITIZE): Comment out.
  (CFLAGS): Remove "$(SANITIZE)".
  (plugins.d/mandos-client): Revert back to use plain $(LINK.c), since
                             we no longer need to remove the leak
                             sanitizer by overriding CFLAGS.

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Lines of Context:
1
 
WARN=-O -Wall -Wextra -Wdouble-promotion -Wformat=2 -Winit-self \
 
1
WARN:=-O -Wall -Wextra -Wdouble-promotion -Wformat=2 -Winit-self \
2
2
        -Wmissing-include-dirs -Wswitch-default -Wswitch-enum \
3
3
        -Wunused -Wuninitialized -Wstrict-overflow=5 \
4
4
        -Wsuggest-attribute=pure -Wsuggest-attribute=const \
10
10
        -Wmissing-format-attribute -Wnormalized=nfc -Wpacked \
11
11
        -Wredundant-decls -Wnested-externs -Winline -Wvla \
12
12
        -Wvolatile-register-var -Woverlength-strings
13
 
#DEBUG=-ggdb3
14
 
# 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
 
13
 
 
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)))
17
19
# <https://developerblog.redhat.com/2014/10/16/gcc-undefined-behavior-sanitizer-ubsan/>
18
 
ALL_SANITIZE_OPTIONS:=-fsanitize=address -fsanitize=undefined \
 
20
ALL_SANITIZE_OPTIONS:=-fsanitize=leak -fsanitize=undefined \
19
21
        -fsanitize=shift -fsanitize=integer-divide-by-zero \
20
22
        -fsanitize=unreachable -fsanitize=vla-bound -fsanitize=null \
21
23
        -fsanitize=return -fsanitize=signed-integer-overflow \
24
26
        -fsanitize=float-cast-overflow -fsanitize=nonnull-attribute \
25
27
        -fsanitize=returns-nonnull-attribute -fsanitize=bool \
26
28
        -fsanitize=enum
27
 
# Check which sanitizing options can be used
28
 
SANITIZE:=$(foreach option,$(ALL_SANITIZE_OPTIONS),$(shell \
29
 
        echo 'int main(){}' | $(CC) --language=c $(option) /dev/stdin \
30
 
        -o /dev/null >/dev/null 2>&1 && echo $(option)))
31
 
LINK_FORTIFY_LD=-z relro -z now
32
 
LINK_FORTIFY=
 
29
 
 
30
# For info about _FORTIFY_SOURCE, see feature_test_macros(7)
 
31
# and <https://gcc.gnu.org/ml/gcc-patches/2004-09/msg02055.html>.
 
32
FORTIFY:=-D_FORTIFY_SOURCE=2 -fstack-protector-all -fPIC
 
33
LINK_FORTIFY_LD:=-z relro -z now
 
34
LINK_FORTIFY:=
33
35
 
34
36
# If BROKEN_PIE is set, do not build with -pie
35
37
ifndef BROKEN_PIE
37
39
LINK_FORTIFY += -pie
38
40
endif
39
41
#COVERAGE=--coverage
40
 
OPTIMIZE=-Os -fno-strict-aliasing
41
 
LANGUAGE=-std=gnu11
42
 
htmldir=man
43
 
version=1.7.3
44
 
SED=sed
 
42
OPTIMIZE:=-Os -fno-strict-aliasing
 
43
LANGUAGE:=-std=gnu11
 
44
htmldir:=man
 
45
version:=1.8.4
 
46
SED:=sed
45
47
 
46
 
USER=$(firstword $(subst :, ,$(shell getent passwd _mandos || getent passwd nobody || echo 65534)))
47
 
GROUP=$(firstword $(subst :, ,$(shell getent group _mandos || getent group nogroup || echo 65534)))
 
48
USER:=$(firstword $(subst :, ,$(shell getent passwd _mandos || getent passwd nobody || echo 65534)))
 
49
GROUP:=$(firstword $(subst :, ,$(shell getent group _mandos || getent group nogroup || echo 65534)))
48
50
 
49
51
## Use these settings for a traditional /usr/local install
50
 
# PREFIX=$(DESTDIR)/usr/local
51
 
# CONFDIR=$(DESTDIR)/etc/mandos
52
 
# KEYDIR=$(DESTDIR)/etc/mandos/keys
53
 
# MANDIR=$(PREFIX)/man
54
 
# INITRAMFSTOOLS=$(DESTDIR)/etc/initramfs-tools
55
 
# STATEDIR=$(DESTDIR)/var/lib/mandos
56
 
# LIBDIR=$(PREFIX)/lib
 
52
# PREFIX:=$(DESTDIR)/usr/local
 
53
# CONFDIR:=$(DESTDIR)/etc/mandos
 
54
# KEYDIR:=$(DESTDIR)/etc/mandos/keys
 
55
# MANDIR:=$(PREFIX)/man
 
56
# INITRAMFSTOOLS:=$(DESTDIR)/etc/initramfs-tools
 
57
# STATEDIR:=$(DESTDIR)/var/lib/mandos
 
58
# LIBDIR:=$(PREFIX)/lib
57
59
##
58
60
 
59
61
## These settings are for a package-type install
60
 
PREFIX=$(DESTDIR)/usr
61
 
CONFDIR=$(DESTDIR)/etc/mandos
62
 
KEYDIR=$(DESTDIR)/etc/keys/mandos
63
 
MANDIR=$(PREFIX)/share/man
64
 
INITRAMFSTOOLS=$(DESTDIR)/usr/share/initramfs-tools
65
 
STATEDIR=$(DESTDIR)/var/lib/mandos
66
 
LIBDIR=$(shell \
 
62
PREFIX:=$(DESTDIR)/usr
 
63
CONFDIR:=$(DESTDIR)/etc/mandos
 
64
KEYDIR:=$(DESTDIR)/etc/keys/mandos
 
65
MANDIR:=$(PREFIX)/share/man
 
66
INITRAMFSTOOLS:=$(DESTDIR)/usr/share/initramfs-tools
 
67
STATEDIR:=$(DESTDIR)/var/lib/mandos
 
68
LIBDIR:=$(shell \
67
69
        for d in \
68
70
        "/usr/lib/`dpkg-architecture -qDEB_HOST_MULTIARCH 2>/dev/null`" \
69
71
        "`rpm --eval='%{_libdir}' 2>/dev/null`" /usr/lib; do \
74
76
        done)
75
77
##
76
78
 
77
 
SYSTEMD=$(DESTDIR)$(shell pkg-config systemd --variable=systemdsystemunitdir)
 
79
SYSTEMD:=$(DESTDIR)$(shell pkg-config systemd --variable=systemdsystemunitdir)
 
80
TMPFILES:=$(DESTDIR)$(shell pkg-config systemd --variable=tmpfilesdir)
78
81
 
79
 
GNUTLS_CFLAGS=$(shell pkg-config --cflags-only-I gnutls)
80
 
GNUTLS_LIBS=$(shell pkg-config --libs gnutls)
81
 
AVAHI_CFLAGS=$(shell pkg-config --cflags-only-I avahi-core)
82
 
AVAHI_LIBS=$(shell pkg-config --libs avahi-core)
83
 
GPGME_CFLAGS=$(shell gpgme-config --cflags; getconf LFS_CFLAGS)
84
 
GPGME_LIBS=$(shell gpgme-config --libs; getconf LFS_LIBS; \
 
82
GNUTLS_CFLAGS:=$(shell pkg-config --cflags-only-I gnutls)
 
83
GNUTLS_LIBS:=$(shell pkg-config --libs gnutls)
 
84
AVAHI_CFLAGS:=$(shell pkg-config --cflags-only-I avahi-core)
 
85
AVAHI_LIBS:=$(shell pkg-config --libs avahi-core)
 
86
GPGME_CFLAGS:=$(shell gpgme-config --cflags; getconf LFS_CFLAGS)
 
87
GPGME_LIBS:=$(shell gpgme-config --libs; getconf LFS_LIBS; \
85
88
        getconf LFS_LDFLAGS)
86
 
LIBNL3_CFLAGS=$(shell pkg-config --cflags-only-I libnl-route-3.0)
87
 
LIBNL3_LIBS=$(shell pkg-config --libs libnl-route-3.0)
 
89
LIBNL3_CFLAGS:=$(shell pkg-config --cflags-only-I libnl-route-3.0)
 
90
LIBNL3_LIBS:=$(shell pkg-config --libs libnl-route-3.0)
88
91
 
89
92
# Do not change these two
90
 
CFLAGS+=$(WARN) $(DEBUG) $(FORTIFY) $(SANITIZE) $(COVERAGE) \
91
 
        $(OPTIMIZE) $(LANGUAGE) $(GNUTLS_CFLAGS) $(AVAHI_CFLAGS) \
92
 
        $(GPGME_CFLAGS) -DVERSION='"$(version)"'
 
93
CFLAGS+=$(WARN) $(DEBUG) $(FORTIFY) $(COVERAGE) \
 
94
        $(OPTIMIZE) $(LANGUAGE) -DVERSION='"$(version)"'
93
95
LDFLAGS+=-Xlinker --as-needed $(COVERAGE) $(LINK_FORTIFY) $(foreach flag,$(LINK_FORTIFY_LD),-Xlinker $(flag))
94
96
 
95
97
# Commands to format a DocBook <refentry> document into a manual page
116
118
        /usr/share/xml/docbook/stylesheet/nwalsh/xhtml/docbook.xsl \
117
119
        $<; $(HTMLPOST) $@)
118
120
# Fix citerefentry links
119
 
HTMLPOST=$(SED) --in-place \
 
121
HTMLPOST:=$(SED) --in-place \
120
122
        --expression='s/\(<a class="citerefentry" href="\)\("><span class="citerefentry"><span class="refentrytitle">\)\([^<]*\)\(<\/span>(\)\([^)]*\)\()<\/span><\/a>\)/\1\3.\5\2\3\4\5\6/g'
121
123
 
122
 
PLUGINS=plugins.d/password-prompt plugins.d/mandos-client \
 
124
PLUGINS:=plugins.d/password-prompt plugins.d/mandos-client \
123
125
        plugins.d/usplash plugins.d/splashy plugins.d/askpass-fifo \
124
126
        plugins.d/plymouth
125
 
PLUGIN_HELPERS=plugin-helpers/mandos-client-iprouteadddel
126
 
CPROGS=plugin-runner $(PLUGINS) $(PLUGIN_HELPERS)
127
 
PROGS=mandos mandos-keygen mandos-ctl mandos-monitor $(CPROGS)
128
 
DOCS=mandos.8 mandos-keygen.8 mandos-monitor.8 mandos-ctl.8 \
 
127
PLUGIN_HELPERS:=plugin-helpers/mandos-client-iprouteadddel
 
128
CPROGS:=plugin-runner $(PLUGINS) $(PLUGIN_HELPERS)
 
129
PROGS:=mandos mandos-keygen mandos-ctl mandos-monitor $(CPROGS)
 
130
DOCS:=mandos.8 mandos-keygen.8 mandos-monitor.8 mandos-ctl.8 \
129
131
        mandos.conf.5 mandos-clients.conf.5 plugin-runner.8mandos \
130
132
        plugins.d/mandos-client.8mandos \
131
133
        plugins.d/password-prompt.8mandos plugins.d/usplash.8mandos \
132
134
        plugins.d/splashy.8mandos plugins.d/askpass-fifo.8mandos \
133
135
        plugins.d/plymouth.8mandos intro.8mandos
134
136
 
135
 
htmldocs=$(addsuffix .xhtml,$(DOCS))
 
137
htmldocs:=$(addsuffix .xhtml,$(DOCS))
136
138
 
137
 
objects=$(addsuffix .o,$(CPROGS))
 
139
objects:=$(addsuffix .o,$(CPROGS))
138
140
 
139
141
all: $(PROGS) mandos.lsm
140
142
 
252
254
                --expression='s/\(mandos_\)[0-9.]\+\(\.orig\.tar\.gz\)/\1$(version)\2/' \
253
255
                $@)
254
256
 
 
257
# Need to add the GnuTLS, Avahi and GPGME libraries
255
258
plugins.d/mandos-client: plugins.d/mandos-client.c
256
 
        $(LINK.c) $^ -lrt $(GNUTLS_LIBS) $(AVAHI_LIBS) $(strip\
257
 
                ) $(GPGME_LIBS) $(LOADLIBES) $(LDLIBS) -o $@
 
259
        $(LINK.c) $^ $(GNUTLS_CFLAGS) $(AVAHI_CFLAGS) $(strip\
 
260
                ) $(GPGME_CFLAGS) -lrt $(GNUTLS_LIBS) $(strip\
 
261
                ) $(AVAHI_LIBS) $(GPGME_LIBS) $(LOADLIBES) $(strip\
 
262
                ) $(LDLIBS) -o $@
258
263
 
259
264
plugin-helpers/mandos-client-iprouteadddel: plugin-helpers/mandos-client-iprouteadddel.c
260
265
        $(LINK.c) $(LIBNL3_CFLAGS) $^ $(LIBNL3_LIBS) $(strip\
279
284
        ./mandos-ctl --check
280
285
 
281
286
# Run the client with a local config and key
282
 
run-client: all keydir/seckey.txt keydir/pubkey.txt
 
287
run-client: all keydir/seckey.txt keydir/pubkey.txt keydir/tls-privkey.pem keydir/tls-pubkey.pem
283
288
        @echo "###################################################################"
284
289
        @echo "# The following error messages are harmless and can be safely     #"
285
 
        @echo "# ignored.  The messages are caused by not running as root, but   #"
286
 
        @echo "# you should NOT run \"make run-client\" as root unless you also    #"
287
 
        @echo "# unpacked and compiled Mandos as root, which is NOT recommended. #"
 
290
        @echo "# ignored:                                                        #"
288
291
        @echo "# From plugin-runner: setgid: Operation not permitted             #"
289
292
        @echo "#                     setuid: Operation not permitted             #"
290
293
        @echo "# From askpass-fifo:  mkfifo: Permission denied                   #"
291
294
        @echo "# From mandos-client:                                             #"
292
295
        @echo "#             Failed to raise privileges: Operation not permitted #"
293
296
        @echo "#             Warning: network hook \"*\" exited with status *      #"
 
297
        @echo "#                                                                 #"
 
298
        @echo "# (The messages are caused by not running as root, but you should #"
 
299
        @echo "# NOT run \"make run-client\" as root unless you also unpacked and  #"
 
300
        @echo "# compiled Mandos as root, which is also NOT recommended.)        #"
294
301
        @echo "###################################################################"
295
302
# We set GNOME_KEYRING_CONTROL to block pam_gnome_keyring
296
303
        ./plugin-runner --plugin-dir=plugins.d \
297
304
                --plugin-helper-dir=plugin-helpers \
298
305
                --config-file=plugin-runner.conf \
299
 
                --options-for=mandos-client:--seckey=keydir/seckey.txt,--pubkey=keydir/pubkey.txt,--network-hook-dir=network-hooks.d \
 
306
                --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 \
300
307
                --env-for=mandos-client:GNOME_KEYRING_CONTROL= \
301
308
                $(CLIENTARGS)
302
309
 
303
310
# Used by run-client
304
 
keydir/seckey.txt keydir/pubkey.txt: mandos-keygen
 
311
keydir/seckey.txt keydir/pubkey.txt keydir/tls-privkey.pem keydir/tls-pubkey.pem: mandos-keygen
305
312
        install --directory keydir
306
313
        ./mandos-keygen --dir keydir --force
307
314
 
314
321
confdir/mandos.conf: mandos.conf
315
322
        install --directory confdir
316
323
        install --mode=u=rw,go=r $^ $@
317
 
confdir/clients.conf: clients.conf keydir/seckey.txt
 
324
confdir/clients.conf: clients.conf keydir/seckey.txt keydir/tls-pubkey.pem
318
325
        install --directory confdir
319
326
        install --mode=u=rw $< $@
320
327
# Add a client password
337
344
        elif install --directory --mode=u=rwx $(STATEDIR); then \
338
345
                chown -- $(USER):$(GROUP) $(STATEDIR) || :; \
339
346
        fi
 
347
        if [ "$(TMPFILES)" != "$(DESTDIR)" -a -d "$(TMPFILES)" ]; then \
 
348
                install --mode=u=rw,go=r tmpfiles.d-mandos.conf \
 
349
                        $(TMPFILES)/mandos.conf; \
 
350
        fi
340
351
        install --mode=u=rwx,go=rx mandos $(PREFIX)/sbin/mandos
341
352
        install --mode=u=rwx,go=rx --target-directory=$(PREFIX)/sbin \
342
353
                mandos-ctl
378
389
                $(LIBDIR)/mandos/plugin-helpers
379
390
        if [ "$(CONFDIR)" != "$(LIBDIR)/mandos" ]; then \
380
391
                install --mode=u=rwx \
381
 
                        --directory "$(CONFDIR)/plugins.d"; \
382
 
                install --directory "$(CONFDIR)/plugin-helpers"; \
 
392
                        --directory "$(CONFDIR)/plugins.d" \
 
393
                        "$(CONFDIR)/plugin-helpers"; \
383
394
        fi
384
395
        install --mode=u=rwx,go=rx --directory \
385
396
                "$(CONFDIR)/network-hooks.d"
386
397
        install --mode=u=rwx,go=rx \
387
398
                --target-directory=$(LIBDIR)/mandos plugin-runner
 
399
        install --mode=u=rwx,go=rx \
 
400
                --target-directory=$(LIBDIR)/mandos mandos-to-cryptroot-unlock
388
401
        install --mode=u=rwx,go=rx --target-directory=$(PREFIX)/sbin \
389
402
                mandos-keygen
390
403
        install --mode=u=rwx,go=rx \
405
418
        install --mode=u=rwxs,go=rx \
406
419
                --target-directory=$(LIBDIR)/mandos/plugins.d \
407
420
                plugins.d/plymouth
408
 
        install --mode=u=rwxs,go=rx \
 
421
        install --mode=u=rwx,go=rx \
409
422
                --target-directory=$(LIBDIR)/mandos/plugin-helpers \
410
423
                plugin-helpers/mandos-client-iprouteadddel
411
424
        install initramfs-tools-hook \
412
425
                $(INITRAMFSTOOLS)/hooks/mandos
413
 
        install --mode=u=rw,go=r initramfs-tools-hook-conf \
414
 
                $(INITRAMFSTOOLS)/conf-hooks.d/mandos
 
426
        install --mode=u=rw,go=r initramfs-tools-conf \
 
427
                $(INITRAMFSTOOLS)/conf.d/mandos-conf
 
428
        install --mode=u=rw,go=r initramfs-tools-conf-hook \
 
429
                $(INITRAMFSTOOLS)/conf-hooks.d/zz-mandos
415
430
        install initramfs-tools-script \
416
431
                $(INITRAMFSTOOLS)/scripts/init-premount/mandos
 
432
        install initramfs-tools-script-stop \
 
433
                $(INITRAMFSTOOLS)/scripts/local-premount/mandos
417
434
        install --mode=u=rw,go=r plugin-runner.conf $(CONFDIR)
418
435
        gzip --best --to-stdout mandos-keygen.8 \
419
436
                > $(MANDIR)/man8/mandos-keygen.8.gz
493
510
        -rmdir $(CONFDIR)
494
511
 
495
512
purge-client: uninstall-client
496
 
        -shred --remove $(KEYDIR)/seckey.txt
 
513
        -shred --remove $(KEYDIR)/seckey.txt $(KEYDIR)/tls-privkey.pem
497
514
        -rm --force $(CONFDIR)/plugin-runner.conf \
498
 
                $(KEYDIR)/pubkey.txt $(KEYDIR)/seckey.txt
 
515
                $(KEYDIR)/pubkey.txt $(KEYDIR)/seckey.txt \
 
516
                $(KEYDIR)/tls-pubkey.txt $(KEYDIR)/tls-privkey.txt
499
517
        -rmdir $(KEYDIR) $(CONFDIR)/plugins.d $(CONFDIR)