diff -up openssh-8.7p1/configure.ac.pkcs11-uri openssh-8.7p1/configure.ac
--- openssh-8.7p1/configure.ac.pkcs11-uri 2021-08-30 13:07:43.646699953 +0200
+++ openssh-8.7p1/configure.ac 2021-08-30 13:07:43.662700088 +0200
@@ -1985,12 +1985,14 @@ AC_LINK_IFELSE(
[AC_DEFINE([HAVE_ISBLANK], [1], [Define if you have isblank(3C).])
])
+SCARD_MSG="yes"
disable_pkcs11=
AC_ARG_ENABLE([pkcs11],
[ --disable-pkcs11 disable PKCS#11 support code [no]],
[
if test "x$enableval" = "xno" ; then
disable_pkcs11=1
+ SCARD_MSG="no"
fi
]
)
@@ -2019,6 +2021,40 @@ AC_SEARCH_LIBS([dlopen], [dl])
AC_CHECK_FUNCS([dlopen])
AC_CHECK_DECL([RTLD_NOW], [], [], [#include <dlfcn.h>])
+# Check whether we have a p11-kit, we got default provider on command line
+DEFAULT_PKCS11_PROVIDER_MSG="no"
+AC_ARG_WITH([default-pkcs11-provider],
+ [ --with-default-pkcs11-provider[[=PATH]] Use default pkcs11 provider (p11-kit detected by default)],
+ [ if test "x$withval" != "xno" && test "x$disable_pkcs11" = "x"; then
+ if test "x$withval" = "xyes" ; then
+ AC_PATH_TOOL([PKGCONFIG], [pkg-config], [no])
+ if test "x$PKGCONFIG" != "xno"; then
+ AC_MSG_CHECKING([if $PKGCONFIG knows about p11-kit])
+ if "$PKGCONFIG" "p11-kit-1"; then
+ AC_MSG_RESULT([yes])
+ use_pkgconfig_for_p11kit=yes
+ else
+ AC_MSG_RESULT([no])
+ fi
+ fi
+ else
+ PKCS11_PATH="${withval}"
+ fi
+ if test "x$use_pkgconfig_for_p11kit" = "xyes"; then
+ PKCS11_PATH=`$PKGCONFIG --variable=proxy_module p11-kit-1`
+ fi
+ AC_CHECK_FILE("$PKCS11_PATH",
+ [ AC_DEFINE_UNQUOTED([PKCS11_DEFAULT_PROVIDER], ["$PKCS11_PATH"], [Path to default PKCS#11 provider (p11-kit proxy)])
+ DEFAULT_PKCS11_PROVIDER_MSG="$PKCS11_PATH"
+ ],
+ [ AC_MSG_ERROR([Requested PKCS11 provided not found]) ]
+ )
+ else
+ AC_MSG_WARN([Needs PKCS11 support to enable default pkcs11 provider])
+ fi ]
+)
+
+
# IRIX has a const char return value for gai_strerror()
AC_CHECK_FUNCS([gai_strerror], [
AC_DEFINE([HAVE_GAI_STRERROR])
@@ -5624,6 +5660,7 @@ echo " BSD Auth support
echo " Random number source: $RAND_MSG"
echo " Privsep sandbox style: $SANDBOX_STYLE"
echo " PKCS#11 support: $enable_pkcs11"
+echo " Default PKCS#11 provider: $DEFAULT_PKCS11_PROVIDER_MSG"
echo " U2F/FIDO support: $enable_sk"
echo ""
diff -up openssh-8.7p1/Makefile.in.pkcs11-uri openssh-8.7p1/Makefile.in
--- openssh-8.7p1/Makefile.in.pkcs11-uri 2021-08-30 13:07:43.571699324 +0200
+++ openssh-8.7p1/Makefile.in 2021-08-30 13:07:43.663700096 +0200
@@ -105,7 +105,7 @@
monitor_fdpass.o rijndael.o ssh-dss.o ssh-ecdsa.o ssh-ecdsa-sk.o \
ssh-ed25519-sk.o ssh-rsa.o dh.o \
msg.o progressmeter.o dns.o entropy.o gss-genr.o umac.o umac128.o \
- ssh-pkcs11.o smult_curve25519_ref.o \
+ ssh-pkcs11.o ssh-pkcs11-uri.o smult_curve25519_ref.o \
poly1305.o chacha.o cipher-chachapoly.o cipher-chachapoly-libcrypto.o \
ssh-ed25519.o digest-openssl.o digest-libc.o \
hmac.o ed25519.o hash.o \
@@ -302,6 +302,8 @@ clean: regressclean
rm -f regress/unittests/sshsig/test_sshsig$(EXEEXT)
rm -f regress/unittests/utf8/*.o
rm -f regress/unittests/utf8/test_utf8$(EXEEXT)
+ rm -f regress/unittests/pkcs11/*.o
+ rm -f regress/unittests/pkcs11/test_pkcs11$(EXEEXT)
rm -f regress/misc/sk-dummy/*.o
rm -f regress/misc/sk-dummy/*.lo
rm -f regress/misc/sk-dummy/sk-dummy.so
@@ -339,6 +341,8 @@ distclean: regressclean
rm -f regress/unittests/sshsig/test_sshsig
rm -f regress/unittests/utf8/*.o
rm -f regress/unittests/utf8/test_utf8
+ rm -f regress/unittests/pkcs11/*.o
+ rm -f regress/unittests/pkcs11/test_pkcs11
rm -f regress/misc/sk-dummy/*.o
rm -f regress/misc/sk-dummy/*.lo
rm -f regress/misc/sk-dummy/sk-dummy.so
@@ -513,6 +517,7 @@ regress-prep:
$(MKDIR_P) `pwd`/regress/unittests/sshkey
$(MKDIR_P) `pwd`/regress/unittests/sshsig
$(MKDIR_P) `pwd`/regress/unittests/utf8
+ $(MKDIR_P) `pwd`/regress/unittests/pkcs11
$(MKDIR_P) `pwd`/regress/misc/sk-dummy
[ -f `pwd`/regress/Makefile ] || \
ln -s `cd $(srcdir) && pwd`/regress/Makefile `pwd`/regress/Makefile
@@ -685,6 +690,16 @@
regress/unittests/test_helper/libtest_helper.a \
-lssh -lopenbsd-compat -lssh -lopenbsd-compat $(TESTLIBS)
+UNITTESTS_TEST_PKCS11_OBJS=\
+ regress/unittests/pkcs11/tests.o
+
+regress/unittests/pkcs11/test_pkcs11$(EXEEXT): \
+ ${UNITTESTS_TEST_PKCS11_OBJS} \
+ regress/unittests/test_helper/libtest_helper.a libssh.a
+ $(LD) -o $@ $(LDFLAGS) $(UNITTESTS_TEST_PKCS11_OBJS) \
+ regress/unittests/test_helper/libtest_helper.a \
+ -lssh -lopenbsd-compat -lcrypto $(LIBS)
+
# These all need to be compiled -fPIC, so they are treated differently.
SK_DUMMY_OBJS=\
regress/misc/sk-dummy/sk-dummy.lo \
@@ -711,7 +726,8 @@ regress-unit-binaries: regress-prep $(RE
regress/unittests/sshbuf/test_sshbuf$(EXEEXT) \
regress/unittests/sshkey/test_sshkey$(EXEEXT) \
regress/unittests/sshsig/test_sshsig$(EXEEXT) \
- regress/unittests/utf8/test_utf8$(EXEEXT)
+ regress/unittests/utf8/test_utf8$(EXEEXT) \
+ regress/unittests/pkcs11/test_pkcs11$(EXEEXT) \
tests: file-tests t-exec interop-tests unit
echo all tests passed
diff -up openssh-8.7p1/regress/agent-pkcs11.sh.pkcs11-uri openssh-8.7p1/regress/agent-pkcs11.sh
--- openssh-8.7p1/regress/agent-pkcs11.sh.pkcs11-uri 2021-08-20 06:03:49.000000000 +0200
+++ openssh-8.7p1/regress/agent-pkcs11.sh 2021-08-30 13:07:43.663700096 +0200
@@ -113,7 +113,7 @@ else
done
trace "remove pkcs11 keys"
- echo ${TEST_SSH_PIN} | notty ${SSHADD} -e ${TEST_SSH_PKCS11} > /dev/null 2>&1
+ ${SSHADD} -e ${TEST_SSH_PKCS11} > /dev/null 2>&1
r=$?
if [ $r -ne 0 ]; then
fail "ssh-add -e failed: exit code $r"
diff -up openssh-8.7p1/regress/Makefile.pkcs11-uri openssh-8.7p1/regress/Makefile
--- openssh-8.7p1/regress/Makefile.pkcs11-uri 2021-08-20 06:03:49.000000000 +0200
+++ openssh-8.7p1/regress/Makefile 2021-08-30 13:07:43.663700096 +0200
@@ -122,7 +122,8 @@ CLEANFILES= *.core actual agent-key.* au
known_hosts known_hosts-cert known_hosts.* krl-* ls.copy \
modpipe netcat no_identity_config \
pidfile putty.rsa2 ready regress.log remote_pid \
- revoked-* rsa rsa-agent rsa-agent.pub rsa.pub rsa_ssh2_cr.prv \
+ revoked-* rsa rsa-agent rsa-agent.pub rsa-agent-cert.pub \
+ rsa.pub rsa_ssh2_cr.prv pkcs11*.crt pkcs11*.key pkcs11.info \
rsa_ssh2_crnl.prv scp-ssh-wrapper.exe \
scp-ssh-wrapper.scp setuid-allowed sftp-server.log \
sftp-server.sh sftp.log ssh-log-wrapper.sh ssh.log \
@@ -252,8 +253,9 @@ unit:
V="" ; \
test "x${USE_VALGRIND}" = "x" || \
V=${.CURDIR}/valgrind-unit.sh ; \
- $$V ${.OBJDIR}/unittests/sshbuf/test_sshbuf ; \
- $$V ${.OBJDIR}/unittests/sshkey/test_sshkey \
+ $$V ${.OBJDIR}/unittests/pkcs11/test_pkcs11 ; \
+ $$V ${.OBJDIR}/unittests/sshbuf/test_sshbuf ; \
+ $$V ${.OBJDIR}/unittests/sshkey/test_sshkey \
-d ${.CURDIR}/unittests/sshkey/testdata ; \
$$V ${.OBJDIR}/unittests/sshsig/test_sshsig \
-d ${.CURDIR}/unittests/sshsig/testdata ; \
diff -up openssh-8.7p1/regress/pkcs11.sh.pkcs11-uri openssh-8.7p1/regress/pkcs11.sh
--- openssh-8.7p1/regress/pkcs11.sh.pkcs11-uri 2021-08-30 13:07:43.663700096 +0200
+++ openssh-8.7p1/regress/pkcs11.sh 2021-08-30 13:07:43.663700096 +0200
@@ -0,0 +1,349 @@
+#
+# Copyright (c) 2017 Red Hat
+#
+# Authors: Jakub Jelen <jjelen@redhat.com>
+#
+# Permission to use, copy, modify, and distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+tid="pkcs11 tests with soft token"
+
+try_token_libs() {
+ for _lib in "$@" ; do
+ if test -f "$_lib" ; then
+ verbose "Using token library $_lib"
+ TEST_SSH_PKCS11="$_lib"
+ return
+ fi
+ done
+ echo "skipped: Unable to find PKCS#11 token library"
+ exit 0
+}
+
+try_token_libs \
+ /usr/local/lib/softhsm/libsofthsm2.so \
+ /usr/lib64/pkcs11/libsofthsm2.so \
+ /usr/lib/x86_64-linux-gnu/softhsm/libsofthsm2.so
+
+TEST_SSH_PIN=1234
+TEST_SSH_SOPIN=12345678
+if [ "x$TEST_SSH_SSHPKCS11HELPER" != "x" ]; then
+ SSH_PKCS11_HELPER="${TEST_SSH_SSHPKCS11HELPER}"
+ export SSH_PKCS11_HELPER
+fi
+
+test -f "$TEST_SSH_PKCS11" || fatal "$TEST_SSH_PKCS11 does not exist"
+
+# setup environment for softhsm token
+DIR=$OBJ/SOFTHSM
+rm -rf $DIR
+TOKEN=$DIR/tokendir
+mkdir -p $TOKEN
+SOFTHSM2_CONF=$DIR/softhsm2.conf
+export SOFTHSM2_CONF
+cat > $SOFTHSM2_CONF << EOF
+# SoftHSM v2 configuration file
+directories.tokendir = ${TOKEN}
+objectstore.backend = file
+# ERROR, WARNING, INFO, DEBUG
+log.level = DEBUG
+# If CKF_REMOVABLE_DEVICE flag should be set
+slots.removable = false
+EOF
+out=$(softhsm2-util --init-token --free --label token-slot-0 --pin "$TEST_SSH_PIN" --so-pin "$TEST_SSH_SOPIN")
+slot=$(echo -- $out | sed 's/.* //')
+
+# prevent ssh-agent from calling ssh-askpass
+SSH_ASKPASS=/usr/bin/true
+export SSH_ASKPASS
+unset DISPLAY
+# We need interactive access to test PKCS# since it prompts for PIN
+sed -i 's/.*BatchMode.*//g' $OBJ/ssh_proxy
+
+# start command w/o tty, so ssh accepts pin from stdin (from agent-pkcs11.sh)
+notty() {
+ perl -e 'use POSIX; POSIX::setsid();
+ if (fork) { wait; exit($? >> 8); } else { exec(@ARGV) }' "$@"
+}
+
+trace "generating keys"
+ID1="02"
+ID2="04"
+RSA=${DIR}/RSA
+EC=${DIR}/EC
+openssl genpkey -algorithm rsa > $RSA
+openssl pkcs8 -nocrypt -in $RSA |\
+ softhsm2-util --slot "$slot" --label "SSH RSA Key $ID1" --id $ID1 \
+ --pin "$TEST_SSH_PIN" --import /dev/stdin
+openssl genpkey \
+ -genparam \
+ -algorithm ec \
+ -pkeyopt ec_paramgen_curve:prime256v1 |\
+ openssl genpkey \
+ -paramfile /dev/stdin > $EC
+openssl pkcs8 -nocrypt -in $EC |\
+ softhsm2-util --slot "$slot" --label "SSH ECDSA Key $ID2" --id $ID2 \
+ --pin "$TEST_SSH_PIN" --import /dev/stdin
+
+trace "List the keys in the ssh-keygen with PKCS#11 URIs"
+${SSHKEYGEN} -D ${TEST_SSH_PKCS11} > $OBJ/token_keys
+if [ $? -ne 0 ]; then
+ fail "FAIL: keygen fails to enumerate keys on PKCS#11 token"
+fi
+grep "pkcs11:" $OBJ/token_keys > /dev/null
+if [ $? -ne 0 ]; then
+ fail "FAIL: The keys from ssh-keygen do not contain PKCS#11 URI as a comment"
+fi
+
+# Set the ECDSA key to authorized keys
+grep "ECDSA" $OBJ/token_keys > $OBJ/authorized_keys_$USER
+
+trace "Simple connect with ssh (without PKCS#11 URI)"
+echo ${TEST_SSH_PIN} | notty ${SSH} -I ${TEST_SSH_PKCS11} \
+ -F $OBJ/ssh_proxy somehost exit 5
+r=$?
+if [ $r -ne 5 ]; then
+ fail "FAIL: ssh connect with pkcs11 failed (exit code $r)"
+fi
+
+trace "Connect with PKCS#11 URI"
+trace " (ECDSA key should succeed)"
+echo ${TEST_SSH_PIN} | notty ${SSH} -F $OBJ/ssh_proxy \
+ -i "pkcs11:id=%${ID2}?module-path=${TEST_SSH_PKCS11}" somehost exit 5
+r=$?
+if [ $r -ne 5 ]; then
+ fail "FAIL: ssh connect with PKCS#11 URI failed (exit code $r)"
+fi
+
+trace " (RSA key should fail)"
+echo ${TEST_SSH_PIN} | notty ${SSH} -F $OBJ/ssh_proxy \
+ -i "pkcs11:id=%${ID1}?module-path=${TEST_SSH_PKCS11}" somehost exit 5
+r=$?
+if [ $r -eq 5 ]; then
+ fail "FAIL: ssh connect with PKCS#11 URI succeeded (should fail)"
+fi
+
+trace "Connect with PKCS#11 URI including PIN should not prompt"
+trace " (ECDSA key should succeed)"
+${SSH} -F $OBJ/ssh_proxy -i \
+ "pkcs11:id=%${ID2}?module-path=${TEST_SSH_PKCS11}&pin-value=${TEST_SSH_PIN}" somehost exit 5
+r=$?
+if [ $r -ne 5 ]; then
+ fail "FAIL: ssh connect with PKCS#11 URI failed (exit code $r)"
+fi
+
+trace " (RSA key should fail)"
+${SSH} -F $OBJ/ssh_proxy -i \
+ "pkcs11:id=%${ID1}?module-path=${TEST_SSH_PKCS11}&pin-value=${TEST_SSH_PIN}" somehost exit 5
+r=$?
+if [ $r -eq 5 ]; then
+ fail "FAIL: ssh connect with PKCS#11 URI succeeded (should fail)"
+fi
+
+trace "Connect with various filtering options in PKCS#11 URI"
+trace " (by object label, ECDSA should succeed)"
+echo ${TEST_SSH_PIN} | notty ${SSH} -F $OBJ/ssh_proxy \
+ -i "pkcs11:object=SSH%20ECDSA%20Key%2004?module-path=${TEST_SSH_PKCS11}" somehost exit 5
+r=$?
+if [ $r -ne 5 ]; then
+ fail "FAIL: ssh connect with PKCS#11 URI failed (exit code $r)"
+fi
+
+trace " (by object label, RSA key should fail)"
+echo ${TEST_SSH_PIN} | notty ${SSH} -F $OBJ/ssh_proxy \
+ -i "pkcs11:object=SSH%20RSA%20Key%2002?module-path=${TEST_SSH_PKCS11}" somehost exit 5
+r=$?
+if [ $r -eq 5 ]; then
+ fail "FAIL: ssh connect with PKCS#11 URI succeeded (should fail)"
+fi
+
+trace " (by token label, ECDSA key should succeed)"
+echo ${TEST_SSH_PIN} | notty ${SSH} -F $OBJ/ssh_proxy \
+ -i "pkcs11:id=%${ID2};token=token-slot-0?module-path=${TEST_SSH_PKCS11}" somehost exit 5
+r=$?
+if [ $r -ne 5 ]; then
+ fail "FAIL: ssh connect with PKCS#11 URI failed (exit code $r)"
+fi
+
+trace " (by wrong token label, should fail)"
+echo ${TEST_SSH_PIN} | notty ${SSH} -F $OBJ/ssh_proxy \
+ -i "pkcs11:token=token-slot-99?module-path=${TEST_SSH_PKCS11}" somehost exit 5
+r=$?
+if [ $r -eq 5 ]; then
+ fail "FAIL: ssh connect with PKCS#11 URI succeeded (should fail)"
+fi
+
+
+
+
+trace "Test PKCS#11 URI specification in configuration files"
+echo "IdentityFile \"pkcs11:id=%${ID2}?module-path=${TEST_SSH_PKCS11}\"" \
+ >> $OBJ/ssh_proxy
+trace " (ECDSA key should succeed)"
+echo ${TEST_SSH_PIN} | notty ${SSH} -F $OBJ/ssh_proxy somehost exit 5
+r=$?
+if [ $r -ne 5 ]; then
+ fail "FAIL: ssh connect with PKCS#11 URI in config failed (exit code $r)"
+fi
+
+# Set the RSA key as authorized
+grep "RSA" $OBJ/token_keys > $OBJ/authorized_keys_$USER
+
+trace " (RSA key should fail)"
+echo ${TEST_SSH_PIN} | notty ${SSH} -F $OBJ/ssh_proxy somehost exit 5
+r=$?
+if [ $r -eq 5 ]; then
+ fail "FAIL: ssh connect with PKCS#11 URI in config succeeded (should fail)"
+fi
+sed -i -e "/IdentityFile/d" $OBJ/ssh_proxy
+
+trace "Test PKCS#11 URI specification in configuration files with bogus spaces"
+echo "IdentityFile \" pkcs11:?module-path=${TEST_SSH_PKCS11} \"" \
+ >> $OBJ/ssh_proxy
+echo ${TEST_SSH_PIN} | notty ${SSH} -F $OBJ/ssh_proxy somehost exit 5
+r=$?
+if [ $r -ne 5 ]; then
+ fail "FAIL: ssh connect with PKCS#11 URI with bogus spaces in config failed" \
+ "(exit code $r)"
+fi
+sed -i -e "/IdentityFile/d" $OBJ/ssh_proxy
+
+
+trace "Combination of PKCS11Provider and PKCS11URI on commandline"
+trace " (RSA key should succeed)"
+echo ${TEST_SSH_PIN} | notty ${SSH} -F $OBJ/ssh_proxy \
+ -i "pkcs11:id=%${ID1}" -I ${TEST_SSH_PKCS11} somehost exit 5
+r=$?
+if [ $r -ne 5 ]; then
+ fail "FAIL: ssh connect with PKCS#11 URI and provider combination" \
+ "failed (exit code $r)"
+fi
+
+trace "Regress: Missing provider in PKCS11URI option"
+${SSH} -F $OBJ/ssh_proxy \
+ -o IdentityFile=\"pkcs11:token=segfault\" somehost exit 5
+r=$?
+if [ $r -eq 139 ]; then
+ fail "FAIL: ssh connect with missing provider_id from configuration option" \
+ "crashed (exit code $r)"
+fi
+
+
+trace "SSH Agent can work with PKCS#11 URI"
+trace "start the agent"
+eval `${SSHAGENT} -s` > /dev/null
+
+r=$?
+if [ $r -ne 0 ]; then
+ fail "could not start ssh-agent: exit code $r"
+else
+ trace "add whole provider to agent"
+ echo ${TEST_SSH_PIN} | notty ${SSHADD} \
+ "pkcs11:?module-path=${TEST_SSH_PKCS11}" #> /dev/null 2>&1
+ r=$?
+ if [ $r -ne 0 ]; then
+ fail "FAIL: ssh-add failed with whole provider: exit code $r"
+ fi
+
+ trace " pkcs11 list via agent (all keys)"
+ ${SSHADD} -l > /dev/null 2>&1
+ r=$?
+ if [ $r -ne 0 ]; then
+ fail "FAIL: ssh-add -l failed with whole provider: exit code $r"
+ fi
+
+ trace " pkcs11 connect via agent (all keys)"
+ ${SSH} -F $OBJ/ssh_proxy somehost exit 5
+ r=$?
+ if [ $r -ne 5 ]; then
+ fail "FAIL: ssh connect failed with whole provider (exit code $r)"
+ fi
+
+ trace " remove pkcs11 keys (all keys)"
+ ${SSHADD} -d "pkcs11:?module-path=${TEST_SSH_PKCS11}" > /dev/null 2>&1
+ r=$?
+ if [ $r -ne 0 ]; then
+ fail "FAIL: ssh-add -d failed with whole provider: exit code $r"
+ fi
+
+ trace "add only RSA key to the agent"
+ echo ${TEST_SSH_PIN} | notty ${SSHADD} \
+ "pkcs11:id=%${ID1}?module-path=${TEST_SSH_PKCS11}" > /dev/null 2>&1
+ r=$?
+ if [ $r -ne 0 ]; then
+ fail "FAIL ssh-add failed with RSA key: exit code $r"
+ fi
+
+ trace " pkcs11 connect via agent (RSA key)"
+ ${SSH} -F $OBJ/ssh_proxy somehost exit 5
+ r=$?
+ if [ $r -ne 5 ]; then
+ fail "FAIL: ssh connect failed with RSA key (exit code $r)"
+ fi
+
+ trace " remove RSA pkcs11 key"
+ ${SSHADD} -d "pkcs11:id=%${ID1}?module-path=${TEST_SSH_PKCS11}" \
+ > /dev/null 2>&1
+ r=$?
+ if [ $r -ne 0 ]; then
+ fail "FAIL: ssh-add -d failed with RSA key: exit code $r"
+ fi
+
+ trace "add only ECDSA key to the agent"
+ echo ${TEST_SSH_PIN} | notty ${SSHADD} \
+ "pkcs11:id=%${ID2}?module-path=${TEST_SSH_PKCS11}" > /dev/null 2>&1
+ r=$?
+ if [ $r -ne 0 ]; then
+ fail "FAIL: ssh-add failed with second key: exit code $r"
+ fi
+
+ trace " pkcs11 connect via agent (ECDSA key should fail)"
+ ${SSH} -F $OBJ/ssh_proxy somehost exit 5
+ r=$?
+ if [ $r -eq 5 ]; then
+ fail "FAIL: ssh connect passed with ECDSA key (should fail)"
+ fi
+
+ trace "add also the RSA key to the agent"
+ echo ${TEST_SSH_PIN} | notty ${SSHADD} \
+ "pkcs11:id=%${ID1}?module-path=${TEST_SSH_PKCS11}" > /dev/null 2>&1
+ r=$?
+ if [ $r -ne 0 ]; then
+ fail "FAIL: ssh-add failed with first key: exit code $r"
+ fi
+
+ trace " remove ECDSA pkcs11 key"
+ ${SSHADD} -d "pkcs11:id=%${ID2}?module-path=${TEST_SSH_PKCS11}" \
+ > /dev/null 2>&1
+ r=$?
+ if [ $r -ne 0 ]; then
+ fail "ssh-add -d failed with ECDSA key: exit code $r"
+ fi
+
+ trace " remove already-removed pkcs11 key should fail"
+ ${SSHADD} -d "pkcs11:id=%${ID2}?module-path=${TEST_SSH_PKCS11}" \
+ > /dev/null 2>&1
+ r=$?
+ if [ $r -eq 0 ]; then
+ fail "FAIL: ssh-add -d passed with non-existing key (should fail)"
+ fi
+
+ trace " pkcs11 connect via agent (the RSA key should be still usable)"
+ ${SSH} -F $OBJ/ssh_proxy somehost exit 5
+ r=$?
+ if [ $r -ne 5 ]; then
+ fail "ssh connect failed with RSA key (after removing ECDSA): exit code $r"
+ fi
+
+ trace "kill agent"
+ ${SSHAGENT} -k > /dev/null
+fi
diff -up openssh-8.7p1/regress/unittests/Makefile.pkcs11-uri openssh-8.7p1/regress/unittests/Makefile
--- openssh-8.7p1/regress/unittests/Makefile.pkcs11-uri 2021-08-20 06:03:49.000000000 +0200
+++ openssh-8.7p1/regress/unittests/Makefile 2021-08-30 13:07:43.663700096 +0200
@@ -2,6 +2,6 @@
REGRESS_FAIL_EARLY?= yes
SUBDIR= test_helper sshbuf sshkey bitmap kex hostkeys utf8 match conversion
-SUBDIR+=authopt misc sshsig
+SUBDIR+=authopt misc sshsig pkcs11
.include <bsd.subdir.mk>
diff -up openssh-8.7p1/regress/unittests/pkcs11/tests.c.pkcs11-uri openssh-8.7p1/regress/unittests/pkcs11/tests.c
--- openssh-8.7p1/regress/unittests/pkcs11/tests.c.pkcs11-uri 2021-08-30 13:07:43.664700104 +0200
+++ openssh-8.7p1/regress/unittests/pkcs11/tests.c 2021-08-30 13:07:43.664700104 +0200
@@ -0,0 +1,346 @@
+/*
+ * Copyright (c) 2017 Red Hat
+ *
+ * Authors: Jakub Jelen <jjelen@redhat.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "includes.h"
+
+#include <locale.h>
+#include <string.h>
+
+#include "../test_helper/test_helper.h"
+
+#include "sshbuf.h"
+#include "ssh-pkcs11-uri.h"
+
+#define EMPTY_URI compose_uri(NULL, 0, NULL, NULL, NULL, NULL, NULL, NULL, NULL)
+
+/* prototypes are not public -- specify them here internally for tests */
+struct sshbuf *percent_encode(const char *, size_t, char *);
+int percent_decode(char *, char **);
+
+void
+compare_uri(struct pkcs11_uri *a, struct pkcs11_uri *b)
+{
+ ASSERT_PTR_NE(a, NULL);
+ ASSERT_PTR_NE(b, NULL);
+ ASSERT_SIZE_T_EQ(a->id_len, b->id_len);
+ ASSERT_MEM_EQ(a->id, b->id, a->id_len);
+ if (b->object != NULL)
+ ASSERT_STRING_EQ(a->object, b->object);
+ else /* both should be null */
+ ASSERT_PTR_EQ(a->object, b->object);
+ if (b->module_path != NULL)
+ ASSERT_STRING_EQ(a->module_path, b->module_path);
+ else /* both should be null */
+ ASSERT_PTR_EQ(a->module_path, b->module_path);
+ if (b->token != NULL)
+ ASSERT_STRING_EQ(a->token, b->token);
+ else /* both should be null */
+ ASSERT_PTR_EQ(a->token, b->token);
+ if (b->manuf != NULL)
+ ASSERT_STRING_EQ(a->manuf, b->manuf);
+ else /* both should be null */
+ ASSERT_PTR_EQ(a->manuf, b->manuf);
+ if (b->lib_manuf != NULL)
+ ASSERT_STRING_EQ(a->lib_manuf, b->lib_manuf);
+ else /* both should be null */
+ ASSERT_PTR_EQ(a->lib_manuf, b->lib_manuf);
+ if (b->serial != NULL)
+ ASSERT_STRING_EQ(a->serial, b->serial);
+ else /* both should be null */
+ ASSERT_PTR_EQ(a->serial, b->serial);
+}
+
+void
+check_parse_rv(char *uri, struct pkcs11_uri *expect, int expect_rv)
+{
+ char *buf = NULL, *str;
+ struct pkcs11_uri *pkcs11uri = NULL;
+ int rv;
+
+ if (expect_rv == 0)
+ str = "Valid";
+ else
+ str = "Invalid";
+ asprintf(&buf, "%s PKCS#11 URI parsing: %s", str, uri);
+ TEST_START(buf);
+ free(buf);
+ pkcs11uri = pkcs11_uri_init();
+ rv = pkcs11_uri_parse(uri, pkcs11uri);
+ ASSERT_INT_EQ(rv, expect_rv);
+ if (rv == 0) /* in case of failure result is undefined */
+ compare_uri(pkcs11uri, expect);
+ pkcs11_uri_cleanup(pkcs11uri);
+ free(expect);
+ TEST_DONE();
+}
+
+void
+check_parse(char *uri, struct pkcs11_uri *expect)
+{
+ check_parse_rv(uri, expect, 0);
+}
+
+struct pkcs11_uri *
+compose_uri(unsigned char *id, size_t id_len, char *token, char *lib_manuf,
+ char *manuf, char *serial, char *module_path, char *object, char *pin)
+{
+ struct pkcs11_uri *uri = pkcs11_uri_init();
+ if (id_len > 0) {
+ uri->id_len = id_len;
+ uri->id = id;
+ }
+ uri->module_path = module_path;
+ uri->token = token;
+ uri->lib_manuf = lib_manuf;
+ uri->manuf = manuf;
+ uri->serial = serial;
+ uri->object = object;
+ uri->pin = pin;
+ return uri;
+}
+
+static void
+test_parse_valid(void)
+{
+ /* path arguments */
+ check_parse("pkcs11:id=%01",
+ compose_uri("\x01", 1, NULL, NULL, NULL, NULL, NULL, NULL, NULL));
+ check_parse("pkcs11:id=%00%01",
+ compose_uri("\x00\x01", 2, NULL, NULL, NULL, NULL, NULL, NULL, NULL));
+ check_parse("pkcs11:token=SSH%20Keys",
+ compose_uri(NULL, 0, "SSH Keys", NULL, NULL, NULL, NULL, NULL, NULL));
+ check_parse("pkcs11:library-manufacturer=OpenSC",
+ compose_uri(NULL, 0, NULL, "OpenSC", NULL, NULL, NULL, NULL, NULL));
+ check_parse("pkcs11:manufacturer=piv_II",
+ compose_uri(NULL, 0, NULL, NULL, "piv_II", NULL, NULL, NULL, NULL));
+ check_parse("pkcs11:serial=IamSerial",
+ compose_uri(NULL, 0, NULL, NULL, NULL, "IamSerial", NULL, NULL, NULL));
+ check_parse("pkcs11:object=SIGN%20Key",
+ compose_uri(NULL, 0, NULL, NULL, NULL, NULL, NULL, "SIGN Key", NULL));
+ /* query arguments */
+ check_parse("pkcs11:?module-path=/usr/lib64/p11-kit-proxy.so",
+ compose_uri(NULL, 0, NULL, NULL, NULL, NULL, "/usr/lib64/p11-kit-proxy.so", NULL, NULL));
+ check_parse("pkcs11:?pin-value=123456",
+ compose_uri(NULL, 0, NULL, NULL, NULL, NULL, NULL, NULL, "123456"));
+
+ /* combinations */
+ /* ID SHOULD be percent encoded */
+ check_parse("pkcs11:token=SSH%20Key;id=0",
+ compose_uri("0", 1, "SSH Key", NULL, NULL, NULL, NULL, NULL, NULL));
+ check_parse(
+ "pkcs11:manufacturer=CAC?module-path=/usr/lib64/p11-kit-proxy.so",
+ compose_uri(NULL, 0, NULL, NULL, "CAC", NULL,
+ "/usr/lib64/p11-kit-proxy.so", NULL, NULL));
+ check_parse(
+ "pkcs11:object=RSA%20Key?module-path=/usr/lib64/pkcs11/opencryptoki.so",
+ compose_uri(NULL, 0, NULL, NULL, NULL, NULL,
+ "/usr/lib64/pkcs11/opencryptoki.so", "RSA Key", NULL));
+ check_parse("pkcs11:?module-path=/usr/lib64/p11-kit-proxy.so&pin-value=123456",
+ compose_uri(NULL, 0, NULL, NULL, NULL, NULL, "/usr/lib64/p11-kit-proxy.so", NULL, "123456"));
+
+ /* empty path component matches everything */
+ check_parse("pkcs11:", EMPTY_URI);
+
+ /* empty string is a valid to match against (and different from NULL) */
+ check_parse("pkcs11:token=",
+ compose_uri(NULL, 0, "", NULL, NULL, NULL, NULL, NULL, NULL));
+ /* Percent character needs to be percent-encoded */
+ check_parse("pkcs11:token=%25",
+ compose_uri(NULL, 0, "%", NULL, NULL, NULL, NULL, NULL, NULL));
+}
+
+static void
+test_parse_invalid(void)
+{
+ /* Invalid percent encoding */
+ check_parse_rv("pkcs11:id=%0", EMPTY_URI, -1);
+ /* Invalid percent encoding */
+ check_parse_rv("pkcs11:id=%ZZ", EMPTY_URI, -1);
+ /* Space MUST be percent encoded -- XXX not enforced yet */
+ check_parse("pkcs11:token=SSH Keys",
+ compose_uri(NULL, 0, "SSH Keys", NULL, NULL, NULL, NULL, NULL, NULL));
+ /* MUST NOT contain duplicate attributes of the same name */
+ check_parse_rv("pkcs11:id=%01;id=%02", EMPTY_URI, -1);
+ /* MUST NOT contain duplicate attributes of the same name */
+ check_parse_rv("pkcs11:?pin-value=111111&pin-value=123456", EMPTY_URI, -1);
+ /* Unrecognized attribute in path are ignored with log message */
+ check_parse("pkcs11:key_name=SSH", EMPTY_URI);
+ /* Unrecognized attribute in query SHOULD be ignored */
+ check_parse("pkcs11:?key_name=SSH", EMPTY_URI);
+}
+
+void
+check_gen(char *expect, struct pkcs11_uri *uri)
+{
+ char *buf = NULL, *uri_str;
+
+ asprintf(&buf, "Valid PKCS#11 URI generation: %s", expect);
+ TEST_START(buf);
+ free(buf);
+ uri_str = pkcs11_uri_get(uri);
+ ASSERT_PTR_NE(uri_str, NULL);
+ ASSERT_STRING_EQ(uri_str, expect);
+ free(uri_str);
+ TEST_DONE();
+}
+
+static void
+test_generate_valid(void)
+{
+ /* path arguments */
+ check_gen("pkcs11:id=%01",
+ compose_uri("\x01", 1, NULL, NULL, NULL, NULL, NULL, NULL, NULL));
+ check_gen("pkcs11:id=%00%01",
+ compose_uri("\x00\x01", 2, NULL, NULL, NULL, NULL, NULL, NULL, NULL));
+ check_gen("pkcs11:token=SSH%20Keys", /* space must be percent encoded */
+ compose_uri(NULL, 0, "SSH Keys", NULL, NULL, NULL, NULL, NULL, NULL));
+ /* library-manufacturer is not implmented now */
+ /*check_gen("pkcs11:library-manufacturer=OpenSC",
+ compose_uri(NULL, 0, NULL, "OpenSC", NULL, NULL, NULL, NULL, NULL));*/
+ check_gen("pkcs11:manufacturer=piv_II",
+ compose_uri(NULL, 0, NULL, NULL, "piv_II", NULL, NULL, NULL, NULL));
+ check_gen("pkcs11:serial=IamSerial",
+ compose_uri(NULL, 0, NULL, NULL, NULL, "IamSerial", NULL, NULL, NULL));
+ check_gen("pkcs11:object=RSA%20Key",
+ compose_uri(NULL, 0, NULL, NULL, NULL, NULL, NULL, "RSA Key", NULL));
+ /* query arguments */
+ check_gen("pkcs11:?module-path=/usr/lib64/p11-kit-proxy.so",
+ compose_uri(NULL, 0, NULL, NULL, NULL, NULL, "/usr/lib64/p11-kit-proxy.so", NULL, NULL));
+
+ /* combinations */
+ check_gen("pkcs11:id=%02;token=SSH%20Keys",
+ compose_uri("\x02", 1, "SSH Keys", NULL, NULL, NULL, NULL, NULL, NULL));
+ check_gen("pkcs11:id=%EE%02?module-path=/usr/lib64/p11-kit-proxy.so",
+ compose_uri("\xEE\x02", 2, NULL, NULL, NULL, NULL, "/usr/lib64/p11-kit-proxy.so", NULL, NULL));
+ check_gen("pkcs11:object=Encryption%20Key;manufacturer=piv_II",
+ compose_uri(NULL, 0, NULL, NULL, "piv_II", NULL, NULL, "Encryption Key", NULL));
+
+ /* empty path component matches everything */
+ check_gen("pkcs11:", EMPTY_URI);
+
+}
+
+void
+check_encode(char *source, size_t len, char *allow_list, char *expect)
+{
+ char *buf = NULL;
+ struct sshbuf *b;
+
+ asprintf(&buf, "percent_encode: expected %s", expect);
+ TEST_START(buf);
+ free(buf);
+
+ b = percent_encode(source, len, allow_list);
+ ASSERT_STRING_EQ(sshbuf_ptr(b), expect);
+ sshbuf_free(b);
+ TEST_DONE();
+}
+
+static void
+test_percent_encode_multibyte(void)
+{
+ /* SHOULD be encoded as octets according to the UTF-8 character encoding */
+
+ /* multi-byte characters are "for free" */
+ check_encode("$", 1, "", "%24");
+ check_encode("¢", 2, "", "%C2%A2");
+ check_encode("€", 3, "", "%E2%82%AC");
+ check_encode("𐍈", 4, "", "%F0%90%8D%88");
+
+ /* CK_UTF8CHAR is unsigned char (1 byte) */
+ /* labels SHOULD be normalized to NFC [UAX15] */
+
+}
+
+static void
+test_percent_encode(void)
+{
+ /* Without allow list encodes everything (for CKA_ID) */
+ check_encode("A*", 2, "", "%41%2A");
+ check_encode("\x00", 1, "", "%00");
+ check_encode("\x7F", 1, "", "%7F");
+ check_encode("\x80", 1, "", "%80");
+ check_encode("\xff", 1, "", "%FF");
+
+ /* Default allow list encodes anything but safe letters */
+ check_encode("test" "\x00" "0alpha", 11, PKCS11_URI_WHITELIST,
+ "test%000alpha");
+ check_encode(" ", 1, PKCS11_URI_WHITELIST,
+ "%20"); /* Space MUST be percent encoded */
+ check_encode("/", 1, PKCS11_URI_WHITELIST,
+ "%2F"); /* '/' delimiter MUST be percent encoded (in the path) */
+ check_encode("?", 1, PKCS11_URI_WHITELIST,
+ "%3F"); /* delimiter '?' MUST be percent encoded (in the path) */
+ check_encode("#", 1, PKCS11_URI_WHITELIST,
+ "%23"); /* '#' MUST be always percent encoded */
+ check_encode("key=value;separator?query&#anch", 35, PKCS11_URI_WHITELIST,
+ "key%3Dvalue%3Bseparator%3Fquery%26amp%3B%23anch");
+
+ /* Components in query can have '/' unencoded (useful for paths) */
+ check_encode("/path/to.file", 13, PKCS11_URI_WHITELIST "/",
+ "/path/to.file");
+}
+
+void
+check_decode(char *source, char *expect, int expect_len)
+{
+ char *buf = NULL, *out = NULL;
+ int rv;
+
+ asprintf(&buf, "percent_decode: %s", source);
+ TEST_START(buf);
+ free(buf);
+
+ rv = percent_decode(source, &out);
+ ASSERT_INT_EQ(rv, expect_len);
+ if (rv >= 0)
+ ASSERT_MEM_EQ(out, expect, expect_len);
+ free(out);
+ TEST_DONE();
+}
+
+static void
+test_percent_decode(void)
+{
+ /* simple valid cases */
+ check_decode("%00", "\x00", 1);
+ check_decode("%FF", "\xFF", 1);
+
+ /* normal strings shold be kept intact */
+ check_decode("strings are left", "strings are left", 16);
+ check_decode("10%25 of trees", "10% of trees", 12);
+
+ /* make sure no more than 2 bytes are parsed */
+ check_decode("%222", "\x22" "2", 2);
+
+ /* invalid expects failure */
+ check_decode("%0", "", -1);
+ check_decode("%Z", "", -1);
+ check_decode("%FG", "", -1);
+}
+
+void
+tests(void)
+{
+ test_percent_encode();
+ test_percent_encode_multibyte();
+ test_percent_decode();
+ test_parse_valid();
+ test_parse_invalid();
+ test_generate_valid();
+}
diff -up openssh-8.7p1/ssh-add.c.pkcs11-uri openssh-8.7p1/ssh-add.c
--- openssh-8.7p1/ssh-add.c.pkcs11-uri 2021-08-20 06:03:49.000000000 +0200
+++ openssh-8.7p1/ssh-add.c 2021-08-30 13:07:43.664700104 +0200
@@ -68,6 +68,7 @@
#include "ssh-sk.h"
#include "sk-api.h"
#include "hostfile.h"
+#include "ssh-pkcs11-uri.h"
/* argv0 */
extern char *__progname;
@@ -229,6 +230,34 @@ delete_all(int agent_fd, int qflag)
return ret;
}
+#ifdef ENABLE_PKCS11
+static int update_card(int, int, const char *, int, struct dest_constraint **, size_t, char *);
+
+int
+update_pkcs11_uri(int agent_fd, int adding, const char *pkcs11_uri, int qflag,
+ struct dest_constraint **dest_constraints, size_t ndest_constraints)
+{
+ char *pin = NULL;
+ struct pkcs11_uri *uri;
+
+ /* dry-run parse to make sure the URI is valid and to report errors */
+ uri = pkcs11_uri_init();
+ if (pkcs11_uri_parse((char *) pkcs11_uri, uri) != 0)
+ fatal("Failed to parse PKCS#11 URI");
+ if (uri->pin != NULL) {
+ pin = strdup(uri->pin);
+ if (pin == NULL) {
+ fatal("Failed to dupplicate string");
+ }
+ /* pin is freed in the update_card() */
+ }
+ pkcs11_uri_cleanup(uri);
+
+ return update_card(agent_fd, adding, pkcs11_uri, qflag,
+ dest_constraints, ndest_constraints, pin);
+}
+#endif
+
static int
add_file(int agent_fd, const char *filename, int key_only, int qflag,
const char *skprovider, struct dest_constraint **dest_constraints,
@@ -445,12 +472,11 @@ add_file(int agent_fd, const char *filen
static int
update_card(int agent_fd, int add, const char *id, int qflag,
- struct dest_constraint **dest_constraints, size_t ndest_constraints)
+ struct dest_constraint **dest_constraints, size_t ndest_constraints, char *pin)
{
- char *pin = NULL;
int r, ret = -1;
- if (add) {
+ if (add && pin == NULL) {
if ((pin = read_passphrase("Enter passphrase for PKCS#11: ",
RP_ALLOW_STDIN)) == NULL)
return -1;
@@ -630,6 +656,14 @@ static int
const char *skprovider, struct dest_constraint **dest_constraints,
size_t ndest_constraints)
{
+#ifdef ENABLE_PKCS11
+ if (strlen(file) >= strlen(PKCS11_URI_SCHEME) &&
+ strncmp(file, PKCS11_URI_SCHEME,
+ strlen(PKCS11_URI_SCHEME)) == 0) {
+ return update_pkcs11_uri(agent_fd, !deleting, file, qflag,
+ dest_constraints, ndest_constraints);
+ }
+#endif
if (deleting) {
if (delete_file(agent_fd, file, key_only, qflag) == -1)
return -1;
@@ -813,7 +846,7 @@ main(int argc, char **argv)
}
if (pkcs11provider != NULL) {
if (update_card(agent_fd, !deleting, pkcs11provider,
- qflag, dest_constraints, ndest_constraints) == -1)
+ qflag, dest_constraints, ndest_constraints, NULL) == -1)
ret = 1;
goto done;
}
diff -up openssh-8.7p1/ssh-agent.c.pkcs11-uri openssh-8.7p1/ssh-agent.c
--- openssh-8.7p1/ssh-agent.c.pkcs11-uri 2021-08-20 06:03:49.000000000 +0200
+++ openssh-8.7p1/ssh-agent.c 2021-08-30 13:07:43.664700104 +0200
@@ -847,10 +847,72 @@ no_identities(SocketEntry *e)
}
#ifdef ENABLE_PKCS11
+static char *
+sanitize_pkcs11_provider(const char *provider)
+{
+ struct pkcs11_uri *uri = NULL;
+ char *sane_uri, *module_path = NULL; /* default path */
+ char canonical_provider[PATH_MAX];
+
+ if (provider == NULL)
+ return NULL;
+
+ if (strlen(provider) >= strlen(PKCS11_URI_SCHEME) &&
+ strncmp(provider, PKCS11_URI_SCHEME,
+ strlen(PKCS11_URI_SCHEME)) == 0) {
+ /* PKCS#11 URI */
+ uri = pkcs11_uri_init();
+ if (uri == NULL) {
+ error("Failed to init PKCS#11 URI");
+ return NULL;
+ }
+
+ if (pkcs11_uri_parse(provider, uri) != 0) {
+ error("Failed to parse PKCS#11 URI");
+ return NULL;
+ }
+ /* validate also provider from URI */
+ if (uri->module_path)
+ module_path = strdup(uri->module_path);
+ } else
+ module_path = strdup(provider); /* simple path */
+
+ if (module_path != NULL) { /* do not validate default NULL path in URI */
+ if (realpath(module_path, canonical_provider) == NULL) {
+ verbose("failed PKCS#11 provider \"%.100s\": realpath: %s",
+ module_path, strerror(errno));
+ free(module_path);
+ pkcs11_uri_cleanup(uri);
+ return NULL;
+ }
+ free(module_path);
+ if (match_pattern_list(canonical_provider, allowed_providers, 0) != 1) {
+ verbose("refusing PKCS#11 provider \"%.100s\": "
+ "not allowed", canonical_provider);
+ pkcs11_uri_cleanup(uri);
+ return NULL;
+ }
+
+ /* copy verified and sanitized provider path back to the uri */
+ if (uri) {
+ free(uri->module_path);
+ uri->module_path = xstrdup(canonical_provider);
+ }
+ }
+
+ if (uri) {
+ sane_uri = pkcs11_uri_get(uri);
+ pkcs11_uri_cleanup(uri);
+ return sane_uri;
+ } else {
+ return xstrdup(canonical_provider); /* simple path */
+ }
+}
+
static void
process_add_smartcard_key(SocketEntry *e)
{
- char *provider = NULL, *pin = NULL, canonical_provider[PATH_MAX];
+ char *provider = NULL, *pin = NULL, *sane_uri = NULL;
char **comments = NULL;
int r, i, count = 0, success = 0, confirm = 0;
u_int seconds = 0;
@@ -869,33 +931,28 @@ process_add_smartcard_key(SocketEntry *e
error_f("failed to parse constraints");
goto send;
}
- if (realpath(provider, canonical_provider) == NULL) {
- verbose("failed PKCS#11 add of \"%.100s\": realpath: %s",
- provider, strerror(errno));
- goto send;
- }
- if (match_pattern_list(canonical_provider, allowed_providers, 0) != 1) {
- verbose("refusing PKCS#11 add of \"%.100s\": "
- "provider not allowed", canonical_provider);
+
+ sane_uri = sanitize_pkcs11_provider(provider);
+ if (sane_uri == NULL)
goto send;
- }
- debug_f("add %.100s", canonical_provider);
+
if (lifetime && !death)
death = monotime() + lifetime;
- count = pkcs11_add_provider(canonical_provider, pin, &keys, &comments);
+ debug_f("add %.100s", sane_uri);
+ count = pkcs11_add_provider(sane_uri, pin, &keys, &comments);
for (i = 0; i < count; i++) {
k = keys[i];
if (lookup_identity(k) == NULL) {
id = xcalloc(1, sizeof(Identity));
id->key = k;
keys[i] = NULL; /* transferred */
- id->provider = xstrdup(canonical_provider);
+ id->provider = xstrdup(sane_uri);
if (*comments[i] != '\0') {
id->comment = comments[i];
comments[i] = NULL; /* transferred */
} else {
- id->comment = xstrdup(canonical_provider);
+ id->comment = xstrdup(sane_uri);
}
id->death = death;
id->confirm = confirm;
@@ -910,6 +967,7 @@ process_add_smartcard_key(SocketEntry *e
send:
free(pin);
free(provider);
+ free(sane_uri);
free(keys);
free(comments);
free_dest_constraints(dest_constraints, ndest_constraints);
@@ -918,7 +976,7 @@ send:
static void
process_remove_smartcard_key(SocketEntry *e)
{
- char *provider = NULL, *pin = NULL, canonical_provider[PATH_MAX];
+ char *provider = NULL, *pin = NULL, *sane_uri = NULL;
int r, success = 0;
Identity *id, *nxt;
@@ -930,30 +988,29 @@ process_remove_smartcard_key(SocketEntry
}
free(pin);
- if (realpath(provider, canonical_provider) == NULL) {
- verbose("failed PKCS#11 add of \"%.100s\": realpath: %s",
- provider, strerror(errno));
+ sane_uri = sanitize_pkcs11_provider(provider);
+ if (sane_uri == NULL)
goto send;
- }
- debug_f("remove %.100s", canonical_provider);
+ debug_f("remove %.100s", sane_uri);
for (id = TAILQ_FIRST(&idtab->idlist); id; id = nxt) {
nxt = TAILQ_NEXT(id, next);
/* Skip file--based keys */
if (id->provider == NULL)
continue;
- if (!strcmp(canonical_provider, id->provider)) {
+ if (!strcmp(sane_uri, id->provider)) {
TAILQ_REMOVE(&idtab->idlist, id, next);
free_identity(id);
idtab->nentries--;
}
}
- if (pkcs11_del_provider(canonical_provider) == 0)
+ if (pkcs11_del_provider(sane_uri) == 0)
success = 1;
else
error_f("pkcs11_del_provider failed");
send:
free(provider);
+ free(sane_uri);
send_status(e, success);
}
#endif /* ENABLE_PKCS11 */
diff -up openssh-8.7p1/ssh_config.5.pkcs11-uri openssh-8.7p1/ssh_config.5
--- openssh-8.7p1/ssh_config.5.pkcs11-uri 2021-08-30 13:07:43.578699383 +0200
+++ openssh-8.7p1/ssh_config.5 2021-08-30 13:07:43.664700104 +0200
@@ -1111,6 +1111,21 @@ may also be used in conjunction with
.Cm CertificateFile
in order to provide any certificate also needed for authentication with
the identity.
+.Pp
+The authentication identity can be also specified in a form of PKCS#11 URI
+starting with a string
+.Cm pkcs11: .
+There is supported a subset of the PKCS#11 URI as defined
+in RFC 7512 (implemented path arguments
+.Cm id ,
+.Cm manufacturer ,
+.Cm object ,
+.Cm token
+and query arguments
+.Cm module-path
+and
+.Cm pin-value
+). The URI can not be in quotes.
.It Cm IgnoreUnknown
Specifies a pattern-list of unknown options to be ignored if they are
encountered in configuration parsing.
diff -up openssh-8.7p1/ssh.c.pkcs11-uri openssh-8.7p1/ssh.c
--- openssh-8.7p1/ssh.c.pkcs11-uri 2021-08-30 13:07:43.578699383 +0200
+++ openssh-8.7p1/ssh.c 2021-08-30 13:07:43.666700121 +0200
@@ -826,6 +826,14 @@ main(int ac, char **av)
options.gss_deleg_creds = 1;
break;
case 'i':
+#ifdef ENABLE_PKCS11
+ if (strlen(optarg) >= strlen(PKCS11_URI_SCHEME) &&
+ strncmp(optarg, PKCS11_URI_SCHEME,
+ strlen(PKCS11_URI_SCHEME)) == 0) {
+ add_identity_file(&options, NULL, optarg, 1);
+ break;
+ }
+#endif
p = tilde_expand_filename(optarg, getuid());
if (stat(p, &st) == -1)
fprintf(stderr, "Warning: Identity file %s "
@@ -1681,6 +1689,7 @@ main(int ac, char **av)
#ifdef ENABLE_PKCS11
(void)pkcs11_del_provider(options.pkcs11_provider);
#endif
+ pkcs11_terminate();
skip_connect:
exit_status = ssh_session2(ssh, cinfo);
@@ -2197,6 +2206,45 @@ ssh_session2(struct ssh *ssh, const stru
options.escape_char : SSH_ESCAPECHAR_NONE, id);
}
+#ifdef ENABLE_PKCS11
+static void
+load_pkcs11_identity(char *pkcs11_uri, char *identity_files[],
+ struct sshkey *identity_keys[], int *n_ids)
+{
+ int nkeys, i;
+ struct sshkey **keys;
+ struct pkcs11_uri *uri;
+
+ debug("identity file '%s' from pkcs#11", pkcs11_uri);
+ uri = pkcs11_uri_init();
+ if (uri == NULL)
+ fatal("Failed to init PKCS#11 URI");
+
+ if (pkcs11_uri_parse(pkcs11_uri, uri) != 0)
+ fatal("Failed to parse PKCS#11 URI %s", pkcs11_uri);
+
+ /* we need to merge URI and provider together */
+ if (options.pkcs11_provider != NULL && uri->module_path == NULL)
+ uri->module_path = strdup(options.pkcs11_provider);
+
+ if (options.num_identity_files < SSH_MAX_IDENTITY_FILES &&
+ (nkeys = pkcs11_add_provider_by_uri(uri, NULL, &keys, NULL)) > 0) {
+ for (i = 0; i < nkeys; i++) {
+ if (*n_ids >= SSH_MAX_IDENTITY_FILES) {
+ sshkey_free(keys[i]);
+ continue;
+ }
+ identity_keys[*n_ids] = keys[i];
+ identity_files[*n_ids] = pkcs11_uri_get(uri);
+ (*n_ids)++;
+ }
+ free(keys);
+ }
+
+ pkcs11_uri_cleanup(uri);
+}
+#endif /* ENABLE_PKCS11 */
+
/* Loads all IdentityFile and CertificateFile keys */
static void
load_public_identity_files(const struct ssh_conn_info *cinfo)
@@ -2211,11 +2259,6 @@ load_public_identity_files(const struct
char *certificate_files[SSH_MAX_CERTIFICATE_FILES];
struct sshkey *certificates[SSH_MAX_CERTIFICATE_FILES];
int certificate_file_userprovided[SSH_MAX_CERTIFICATE_FILES];
-#ifdef ENABLE_PKCS11
- struct sshkey **keys = NULL;
- char **comments = NULL;
- int nkeys;
-#endif /* PKCS11 */
n_ids = n_certs = 0;
memset(identity_files, 0, sizeof(identity_files));
@@ -2228,33 +2271,46 @@ load_public_identity_files(const struct
sizeof(certificate_file_userprovided));
#ifdef ENABLE_PKCS11
- if (options.pkcs11_provider != NULL &&
- options.num_identity_files < SSH_MAX_IDENTITY_FILES &&
- (pkcs11_init(!options.batch_mode) == 0) &&
- (nkeys = pkcs11_add_provider(options.pkcs11_provider, NULL,
- &keys, &comments)) > 0) {
- for (i = 0; i < nkeys; i++) {
- if (n_ids >= SSH_MAX_IDENTITY_FILES) {
- sshkey_free(keys[i]);
- free(comments[i]);
- continue;
- }
- identity_keys[n_ids] = keys[i];
- identity_files[n_ids] = comments[i]; /* transferred */
- n_ids++;
- }
- free(keys);
- free(comments);
+ /* handle fallback from PKCS11Provider option */
+ pkcs11_init(!options.batch_mode);
+
+ if (options.pkcs11_provider != NULL) {
+ struct pkcs11_uri *uri;
+
+ uri = pkcs11_uri_init();
+ if (uri == NULL)
+ fatal("Failed to init PKCS#11 URI");
+
+ /* Construct simple PKCS#11 URI to simplify access */
+ uri->module_path = strdup(options.pkcs11_provider);
+
+ /* Add it as any other IdentityFile */
+ cp = pkcs11_uri_get(uri);
+ add_identity_file(&options, NULL, cp, 1);
+ free(cp);
+
+ pkcs11_uri_cleanup(uri);
}
#endif /* ENABLE_PKCS11 */
for (i = 0; i < options.num_identity_files; i++) {
+ char *name = options.identity_files[i];
if (n_ids >= SSH_MAX_IDENTITY_FILES ||
- strcasecmp(options.identity_files[i], "none") == 0) {
+ strcasecmp(name, "none") == 0) {
free(options.identity_files[i]);
options.identity_files[i] = NULL;
continue;
}
- cp = tilde_expand_filename(options.identity_files[i], getuid());
+#ifdef ENABLE_PKCS11
+ if (strlen(name) >= strlen(PKCS11_URI_SCHEME) &&
+ strncmp(name, PKCS11_URI_SCHEME,
+ strlen(PKCS11_URI_SCHEME)) == 0) {
+ load_pkcs11_identity(name, identity_files,
+ identity_keys, &n_ids);
+ free(options.identity_files[i]);
+ continue;
+ }
+#endif /* ENABLE_PKCS11 */
+ cp = tilde_expand_filename(name, getuid());
filename = default_client_percent_dollar_expand(cp, cinfo);
free(cp);
check_load(sshkey_load_public(filename, &public, NULL),
diff -up openssh-8.7p1/ssh-keygen.c.pkcs11-uri openssh-8.7p1/ssh-keygen.c
--- openssh-8.7p1/ssh-keygen.c.pkcs11-uri 2021-08-20 06:03:49.000000000 +0200
+++ openssh-8.7p1/ssh-keygen.c 2021-08-30 13:07:43.666700121 +0200
@@ -860,8 +860,11 @@ do_download(struct passwd *pw)
free(fp);
} else {
(void) sshkey_write(keys[i], stdout); /* XXX check */
- fprintf(stdout, "%s%s\n",
- *(comments[i]) == '\0' ? "" : " ", comments[i]);
+ if (*(comments[i]) != '\0') {
+ fprintf(stdout, " %s", comments[i]);
+ }
+ (void) pkcs11_uri_write(keys[i], stdout);
+ fprintf(stdout, "\n");
}
free(comments[i]);
sshkey_free(keys[i]);
diff -up openssh-8.7p1/ssh-pkcs11-client.c.pkcs11-uri openssh-8.7p1/ssh-pkcs11-client.c
--- openssh-8.7p1/ssh-pkcs11-client.c.pkcs11-uri 2021-08-20 06:03:49.000000000 +0200
+++ openssh-8.7p1/ssh-pkcs11-client.c 2021-08-30 13:07:43.666700121 +0200
@@ -323,6 +323,8 @@ pkcs11_add_provider(char *name, char *pi
u_int nkeys, i;
struct sshbuf *msg;
+ debug_f("called, name = %s", name);
+
if (fd < 0 && pkcs11_start_helper() < 0)
return (-1);
@@ -342,6 +344,7 @@ pkcs11_add_provider(char *name, char *pi
*keysp = xcalloc(nkeys, sizeof(struct sshkey *));
if (labelsp)
*labelsp = xcalloc(nkeys, sizeof(char *));
+ debug_f("nkeys = %u", nkeys);
for (i = 0; i < nkeys; i++) {
/* XXX clean up properly instead of fatal() */
if ((r = sshbuf_get_string(msg, &blob, &blen)) != 0 ||
diff -up openssh-8.7p1/ssh-pkcs11.c.pkcs11-uri openssh-8.7p1/ssh-pkcs11.c
--- openssh-8.7p1/ssh-pkcs11.c.pkcs11-uri 2021-08-20 06:03:49.000000000 +0200
+++ openssh-8.7p1/ssh-pkcs11.c 2021-08-30 13:12:27.709084157 +0200
@@ -55,8 +55,8 @@ struct pkcs11_slotinfo {
int logged_in;
};
-struct pkcs11_provider {
- char *name;
+struct pkcs11_module {
+ char *module_path;
void *handle;
CK_FUNCTION_LIST *function_list;
CK_INFO info;
@@ -65,6 +65,13 @@ struct pkcs11_provider {
struct pkcs11_slotinfo *slotinfo;
int valid;
int refcount;
+};
+
+struct pkcs11_provider {
+ char *name;
+ struct pkcs11_module *module; /* can be shared between various providers */
+ int refcount;
+ int valid;
TAILQ_ENTRY(pkcs11_provider) next;
};
@@ -75,6 +82,7 @@ struct pkcs11_key {
CK_ULONG slotidx;
char *keyid;
int keyid_len;
+ char *label;
};
int pkcs11_interactive = 0;
@@ -106,26 +114,61 @@ pkcs11_init(int interactive)
* this is called when a provider gets unregistered.
*/
static void
-pkcs11_provider_finalize(struct pkcs11_provider *p)
+pkcs11_module_finalize(struct pkcs11_module *m)
{
CK_RV rv;
CK_ULONG i;
- debug_f("provider \"%s\" refcount %d valid %d",
- p->name, p->refcount, p->valid);
- if (!p->valid)
+ debug_f("%p refcount %d valid %d", m, m->refcount, m->valid);
+ if (!m->valid)
return;
- for (i = 0; i < p->nslots; i++) {
- if (p->slotinfo[i].session &&
- (rv = p->function_list->C_CloseSession(
- p->slotinfo[i].session)) != CKR_OK)
+ for (i = 0; i < m->nslots; i++) {
+ if (m->slotinfo[i].session &&
+ (rv = m->function_list->C_CloseSession(
+ m->slotinfo[i].session)) != CKR_OK)
error("C_CloseSession failed: %lu", rv);
}
- if ((rv = p->function_list->C_Finalize(NULL)) != CKR_OK)
+ if ((rv = m->function_list->C_Finalize(NULL)) != CKR_OK)
error("C_Finalize failed: %lu", rv);
+ m->valid = 0;
+ m->function_list = NULL;
+ dlclose(m->handle);
+}
+
+/*
+ * remove a reference to the pkcs11 module.
+ * called when a provider is unregistered.
+ */
+static void
+pkcs11_module_unref(struct pkcs11_module *m)
+{
+ debug_f("%p refcount %d", m, m->refcount);
+ if (--m->refcount <= 0) {
+ pkcs11_module_finalize(m);
+ if (m->valid)
+ error_f("%p still valid", m);
+ free(m->slotlist);
+ free(m->slotinfo);
+ free(m->module_path);
+ free(m);
+ }
+}
+
+/*
+ * finalize a provider shared library, it's no longer usable.
+ * however, there might still be keys referencing this provider,
+ * so the actual freeing of memory is handled by pkcs11_provider_unref().
+ * this is called when a provider gets unregistered.
+ */
+static void
+pkcs11_provider_finalize(struct pkcs11_provider *p)
+{
+ debug_f("%p refcount %d valid %d", p, p->refcount, p->valid);
+ if (!p->valid)
+ return;
+ pkcs11_module_unref(p->module);
+ p->module = NULL;
p->valid = 0;
- p->function_list = NULL;
- dlclose(p->handle);
}
/*
@@ -137,11 +180,9 @@ pkcs11_provider_unref(struct pkcs11_prov
{
debug_f("provider \"%s\" refcount %d", p->name, p->refcount);
if (--p->refcount <= 0) {
- if (p->valid)
- error_f("provider \"%s\" still valid", p->name);
free(p->name);
- free(p->slotlist);
- free(p->slotinfo);
+ if (p->module)
+ pkcs11_module_unref(p->module);
free(p);
}
}
@@ -159,6 +200,20 @@ pkcs11_terminate(void)
}
}
+/* lookup provider by module path */
+static struct pkcs11_module *
+pkcs11_provider_lookup_module(char *module_path)
+{
+ struct pkcs11_provider *p;
+
+ TAILQ_FOREACH(p, &pkcs11_providers, next) {
+ debug("check %p %s (%s)", p, p->name, p->module->module_path);
+ if (!strcmp(module_path, p->module->module_path))
+ return (p->module);
+ }
+ return (NULL);
+}
+
/* lookup provider by name */
static struct pkcs11_provider *
pkcs11_provider_lookup(char *provider_id)
@@ -173,19 +228,55 @@ pkcs11_provider_lookup(char *provider_id
return (NULL);
}
+int pkcs11_del_provider_by_uri(struct pkcs11_uri *);
+
/* unregister provider by name */
int
pkcs11_del_provider(char *provider_id)
{
+ int rv;
+ struct pkcs11_uri *uri;
+
+ debug_f("called, provider_id = %s", provider_id);
+
+ if (provider_id == NULL)
+ return 0;
+
+ uri = pkcs11_uri_init();
+ if (uri == NULL)
+ fatal("Failed to init PKCS#11 URI");
+
+ if (strlen(provider_id) >= strlen(PKCS11_URI_SCHEME) &&
+ strncmp(provider_id, PKCS11_URI_SCHEME, strlen(PKCS11_URI_SCHEME)) == 0) {
+ if (pkcs11_uri_parse(provider_id, uri) != 0)
+ fatal("Failed to parse PKCS#11 URI");
+ } else {
+ uri->module_path = strdup(provider_id);
+ }
+
+ rv = pkcs11_del_provider_by_uri(uri);
+ pkcs11_uri_cleanup(uri);
+ return rv;
+}
+
+/* unregister provider by PKCS#11 URI */
+int
+pkcs11_del_provider_by_uri(struct pkcs11_uri *uri)
+{
struct pkcs11_provider *p;
+ int rv = -1;
+ char *provider_uri = pkcs11_uri_get(uri);
- if ((p = pkcs11_provider_lookup(provider_id)) != NULL) {
+ debug3_f("called with provider %s", provider_uri);
+
+ if ((p = pkcs11_provider_lookup(provider_uri)) != NULL) {
TAILQ_REMOVE(&pkcs11_providers, p, next);
pkcs11_provider_finalize(p);
pkcs11_provider_unref(p);
- return (0);
+ rv = 0;
}
- return (-1);
+ free(provider_uri);
+ return rv;
}
static RSA_METHOD *rsa_method;
@@ -195,6 +286,56 @@ static EC_KEY_METHOD *ec_key_method;
static int ec_key_idx = 0;
#endif /* OPENSSL_HAS_ECC && HAVE_EC_KEY_METHOD_NEW */
+/*
+ * This can't be in the ssh-pkcs11-uri, becase we can not depend on
+ * PKCS#11 structures in ssh-agent (using client-helper communication)
+ */
+int
+pkcs11_uri_write(const struct sshkey *key, FILE *f)
+{
+ char *p = NULL;
+ struct pkcs11_uri uri;
+ struct pkcs11_key *k11;
+
+ /* sanity - is it a RSA key with associated app_data? */
+ switch (key->type) {
+ case KEY_RSA:
+ k11 = RSA_get_ex_data(key->rsa, rsa_idx);
+ break;
+#ifdef HAVE_EC_KEY_METHOD_NEW
+ case KEY_ECDSA:
+ k11 = EC_KEY_get_ex_data(key->ecdsa, ec_key_idx);
+ break;
+#endif
+ default:
+ error("Unknown key type %d", key->type);
+ return -1;
+ }
+ if (k11 == NULL) {
+ error("Failed to get ex_data for key type %d", key->type);
+ return (-1);
+ }
+
+ /* omit type -- we are looking for private-public or private-certificate pairs */
+ uri.id = k11->keyid;
+ uri.id_len = k11->keyid_len;
+ uri.token = k11->provider->module->slotinfo[k11->slotidx].token.label;
+ uri.object = k11->label;
+ uri.module_path = k11->provider->module->module_path;
+ uri.lib_manuf = k11->provider->module->info.manufacturerID;
+ uri.manuf = k11->provider->module->slotinfo[k11->slotidx].token.manufacturerID;
+ uri.serial = k11->provider->module->slotinfo[k11->slotidx].token.serialNumber;
+
+ p = pkcs11_uri_get(&uri);
+ /* do not cleanup -- we do not allocate here, only reference */
+ if (p == NULL)
+ return -1;
+
+ fprintf(f, " %s", p);
+ free(p);
+ return 0;
+}
+
/* release a wrapped object */
static void
pkcs11_k11_free(void *parent, void *ptr, CRYPTO_EX_DATA *ad, int idx,
@@ -208,6 +348,7 @@ pkcs11_k11_free(void *parent, void *ptr,
if (k11->provider)
pkcs11_provider_unref(k11->provider);
free(k11->keyid);
+ free(k11->label);
free(k11);
}
@@ -222,8 +363,8 @@ pkcs11_find(struct pkcs11_provider *p, C
CK_RV rv;
int ret = -1;
- f = p->function_list;
- session = p->slotinfo[slotidx].session;
+ f = p->module->function_list;
+ session = p->module->slotinfo[slotidx].session;
if ((rv = f->C_FindObjectsInit(session, attr, nattr)) != CKR_OK) {
error("C_FindObjectsInit failed (nattr %lu): %lu", nattr, rv);
return (-1);
@@ -260,14 +403,14 @@ pkcs11_login_slot(struct pkcs11_provider
if (si->token.flags & CKF_PROTECTED_AUTHENTICATION_PATH)
verbose("Deferring PIN entry to reader keypad.");
else {
- snprintf(prompt, sizeof(prompt), "Enter PIN for '%s': ",
+ snprintf(prompt, sizeof(prompt), "Enter PIN for '%.32s': ",
si->token.label);
- if ((pin = read_passphrase(prompt, RP_ALLOW_EOF)) == NULL) {
+ if ((pin = read_passphrase(prompt, RP_ALLOW_EOF|RP_ALLOW_STDIN)) == NULL) {
debug_f("no pin specified");
return (-1); /* bail out */
}
}
- rv = provider->function_list->C_Login(si->session, type, (u_char *)pin,
+ rv = provider->module->function_list->C_Login(si->session, type, (u_char *)pin,
(pin != NULL) ? strlen(pin) : 0);
if (pin != NULL)
freezero(pin, strlen(pin));
@@ -297,13 +438,14 @@ pkcs11_login_slot(struct pkcs11_provider
static int
pkcs11_login(struct pkcs11_key *k11, CK_USER_TYPE type)
{
- if (k11 == NULL || k11->provider == NULL || !k11->provider->valid) {
+ if (k11 == NULL || k11->provider == NULL || !k11->provider->valid ||
+ k11->provider->module == NULL || !k11->provider->module->valid) {
error("no pkcs11 (valid) provider found");
return (-1);
}
return pkcs11_login_slot(k11->provider,
- &k11->provider->slotinfo[k11->slotidx], type);
+ &k11->provider->module->slotinfo[k11->slotidx], type);
}
@@ -319,13 +461,14 @@ pkcs11_check_obj_bool_attrib(struct pkcs
*val = 0;
- if (!k11->provider || !k11->provider->valid) {
+ if (!k11->provider || !k11->provider->valid ||
+ !k11->provider->module || !k11->provider->module->valid) {
error("no pkcs11 (valid) provider found");
return (-1);
}
- f = k11->provider->function_list;
- si = &k11->provider->slotinfo[k11->slotidx];
+ f = k11->provider->module->function_list;
+ si = &k11->provider->module->slotinfo[k11->slotidx];
attr.type = type;
attr.pValue = &flag;
@@ -356,13 +499,14 @@ pkcs11_get_key(struct pkcs11_key *k11, C
int always_auth = 0;
int did_login = 0;
- if (!k11->provider || !k11->provider->valid) {
+ if (!k11->provider || !k11->provider->valid ||
+ !k11->provider->module || !k11->provider->module->valid) {
error("no pkcs11 (valid) provider found");
return (-1);
}
- f = k11->provider->function_list;
- si = &k11->provider->slotinfo[k11->slotidx];
+ f = k11->provider->module->function_list;
+ si = &k11->provider->module->slotinfo[k11->slotidx];
if ((si->token.flags & CKF_LOGIN_REQUIRED) && !si->logged_in) {
if (pkcs11_login(k11, CKU_USER) < 0) {
@@ -439,8 +583,8 @@ pkcs11_rsa_private_encrypt(int flen, con
return (-1);
}
- f = k11->provider->function_list;
- si = &k11->provider->slotinfo[k11->slotidx];
+ f = k11->provider->module->function_list;
+ si = &k11->provider->module->slotinfo[k11->slotidx];
tlen = RSA_size(rsa);
/* XXX handle CKR_BUFFER_TOO_SMALL */
@@ -484,7 +628,7 @@ pkcs11_rsa_start_wrapper(void)
/* redirect private key operations for rsa key to pkcs11 token */
static int
pkcs11_rsa_wrap(struct pkcs11_provider *provider, CK_ULONG slotidx,
- CK_ATTRIBUTE *keyid_attrib, RSA *rsa)
+ CK_ATTRIBUTE *keyid_attrib, CK_ATTRIBUTE *label_attrib, RSA *rsa)
{
struct pkcs11_key *k11;
@@ -502,6 +646,12 @@ pkcs11_rsa_wrap(struct pkcs11_provider *
memcpy(k11->keyid, keyid_attrib->pValue, k11->keyid_len);
}
+ if (label_attrib->ulValueLen > 0 ) {
+ k11->label = xmalloc(label_attrib->ulValueLen+1);
+ memcpy(k11->label, label_attrib->pValue, label_attrib->ulValueLen);
+ k11->label[label_attrib->ulValueLen] = 0;
+ }
+
RSA_set_method(rsa, rsa_method);
RSA_set_ex_data(rsa, rsa_idx, k11);
return (0);
@@ -532,8 +682,8 @@ ecdsa_do_sign(const unsigned char *dgst,
return (NULL);
}
- f = k11->provider->function_list;
- si = &k11->provider->slotinfo[k11->slotidx];
+ f = k11->provider->module->function_list;
+ si = &k11->provider->module->slotinfo[k11->slotidx];
siglen = ECDSA_size(ec);
sig = xmalloc(siglen);
@@ -598,7 +748,7 @@ pkcs11_ecdsa_start_wrapper(void)
static int
pkcs11_ecdsa_wrap(struct pkcs11_provider *provider, CK_ULONG slotidx,
- CK_ATTRIBUTE *keyid_attrib, EC_KEY *ec)
+ CK_ATTRIBUTE *keyid_attrib, CK_ATTRIBUTE *label_attrib, EC_KEY *ec)
{
struct pkcs11_key *k11;
@@ -614,6 +764,12 @@ pkcs11_ecdsa_wrap(struct pkcs11_provider
k11->keyid = xmalloc(k11->keyid_len);
memcpy(k11->keyid, keyid_attrib->pValue, k11->keyid_len);
}
+ if (label_attrib->ulValueLen > 0 ) {
+ k11->label = xmalloc(label_attrib->ulValueLen+1);
+ memcpy(k11->label, label_attrib->pValue, label_attrib->ulValueLen);
+ k11->label[label_attrib->ulValueLen] = 0;
+ }
+
EC_KEY_set_method(ec, ec_key_method);
EC_KEY_set_ex_data(ec, ec_key_idx, k11);
@@ -622,7 +779,8 @@
}
#endif /* OPENSSL_HAS_ECC && HAVE_EC_KEY_METHOD_NEW */
-/* remove trailing spaces */
+/* remove trailing spaces. Note, that this does NOT guarantee the buffer
+ * will be null terminated if there are no trailing spaces! */
static void
rmspace(u_char *buf, size_t len)
{
@@ -630,8 +788,8 @@
if (!len)
return;
- for (i = len - 1; i > 0; i--)
- if (i == len - 1 || buf[i] == ' ')
+ for (i = len - 1; i > 0; i--)
+ if (buf[i] == ' ')
buf[i] = '\0';
else
break;
@@ -650,8 +806,8 @@ pkcs11_open_session(struct pkcs11_provid
CK_SESSION_HANDLE session;
int login_required, ret;
- f = p->function_list;
- si = &p->slotinfo[slotidx];
+ f = p->module->function_list;
+ si = &p->module->slotinfo[slotidx];
login_required = si->token.flags & CKF_LOGIN_REQUIRED;
@@ -661,9 +817,9 @@ pkcs11_open_session(struct pkcs11_provid
error("pin required");
return (-SSH_PKCS11_ERR_PIN_REQUIRED);
}
- if ((rv = f->C_OpenSession(p->slotlist[slotidx], CKF_RW_SESSION|
+ if ((rv = f->C_OpenSession(p->module->slotlist[slotidx], CKF_RW_SESSION|
CKF_SERIAL_SESSION, NULL, NULL, &session)) != CKR_OK) {
- error("C_OpenSession failed: %lu", rv);
+ error("C_OpenSession failed for slot %lu: %lu", slotidx, rv);
return (-1);
}
if (login_required && pin != NULL && strlen(pin) != 0) {
@@ -699,7 +855,8 @@ static struct sshkey *
pkcs11_fetch_ecdsa_pubkey(struct pkcs11_provider *p, CK_ULONG slotidx,
CK_OBJECT_HANDLE *obj)
{
- CK_ATTRIBUTE key_attr[3];
+ CK_ATTRIBUTE key_attr[4];
+ int nattr = 4;
CK_SESSION_HANDLE session;
CK_FUNCTION_LIST *f = NULL;
CK_RV rv;
@@ -713,14 +870,15 @@ pkcs11_fetch_ecdsa_pubkey(struct pkcs11_
memset(&key_attr, 0, sizeof(key_attr));
key_attr[0].type = CKA_ID;
- key_attr[1].type = CKA_EC_POINT;
- key_attr[2].type = CKA_EC_PARAMS;
+ key_attr[1].type = CKA_LABEL;
+ key_attr[2].type = CKA_EC_POINT;
+ key_attr[3].type = CKA_EC_PARAMS;
- session = p->slotinfo[slotidx].session;
- f = p->function_list;
+ session = p->module->slotinfo[slotidx].session;
+ f = p->module->function_list;
/* figure out size of the attributes */
- rv = f->C_GetAttributeValue(session, *obj, key_attr, 3);
+ rv = f->C_GetAttributeValue(session, *obj, key_attr, nattr);
if (rv != CKR_OK) {
error("C_GetAttributeValue failed: %lu", rv);
return (NULL);
@@ -731,19 +889,19 @@ pkcs11_fetch_ecdsa_pubkey(struct pkcs11_
* ensure that none of the others are zero length.
* XXX assumes CKA_ID is always first.
*/
- if (key_attr[1].ulValueLen == 0 ||
- key_attr[2].ulValueLen == 0) {
+ if (key_attr[2].ulValueLen == 0 ||
+ key_attr[3].ulValueLen == 0) {
error("invalid attribute length");
return (NULL);
}
/* allocate buffers for attributes */
- for (i = 0; i < 3; i++)
+ for (i = 0; i < nattr; i++)
if (key_attr[i].ulValueLen > 0)
key_attr[i].pValue = xcalloc(1, key_attr[i].ulValueLen);
/* retrieve ID, public point and curve parameters of EC key */
- rv = f->C_GetAttributeValue(session, *obj, key_attr, 3);
+ rv = f->C_GetAttributeValue(session, *obj, key_attr, nattr);
if (rv != CKR_OK) {
error("C_GetAttributeValue failed: %lu", rv);
goto fail;
@@ -755,8 +913,8 @@ pkcs11_fetch_ecdsa_pubkey(struct pkcs11_
goto fail;
}
- attrp = key_attr[2].pValue;
- group = d2i_ECPKParameters(NULL, &attrp, key_attr[2].ulValueLen);
+ attrp = key_attr[3].pValue;
+ group = d2i_ECPKParameters(NULL, &attrp, key_attr[3].ulValueLen);
if (group == NULL) {
ossl_error("d2i_ECPKParameters failed");
goto fail;
@@ -767,13 +925,13 @@ pkcs11_fetch_ecdsa_pubkey(struct pkcs11_
goto fail;
}
- if (key_attr[1].ulValueLen <= 2) {
+ if (key_attr[2].ulValueLen <= 2) {
error("CKA_EC_POINT too small");
goto fail;
}
- attrp = key_attr[1].pValue;
- octet = d2i_ASN1_OCTET_STRING(NULL, &attrp, key_attr[1].ulValueLen);
+ attrp = key_attr[2].pValue;
+ octet = d2i_ASN1_OCTET_STRING(NULL, &attrp, key_attr[2].ulValueLen);
if (octet == NULL) {
ossl_error("d2i_ASN1_OCTET_STRING failed");
goto fail;
@@ -790,7 +948,7 @@ pkcs11_fetch_ecdsa_pubkey(struct pkcs11_
goto fail;
}
- if (pkcs11_ecdsa_wrap(p, slotidx, &key_attr[0], ec))
+ if (pkcs11_ecdsa_wrap(p, slotidx, &key_attr[0], &key_attr[1], ec))
goto fail;
key = sshkey_new(KEY_UNSPEC);
@@ -806,7 +964,7 @@ pkcs11_fetch_ecdsa_pubkey(struct pkcs11_
ec = NULL; /* now owned by key */
fail:
- for (i = 0; i < 3; i++)
+ for (i = 0; i < nattr; i++)
free(key_attr[i].pValue);
if (ec)
EC_KEY_free(ec);
@@ -823,7 +981,8 @@ static struct sshkey *
pkcs11_fetch_rsa_pubkey(struct pkcs11_provider *p, CK_ULONG slotidx,
CK_OBJECT_HANDLE *obj)
{
- CK_ATTRIBUTE key_attr[3];
+ CK_ATTRIBUTE key_attr[4];
+ int nattr = 4;
CK_SESSION_HANDLE session;
CK_FUNCTION_LIST *f = NULL;
CK_RV rv;
@@ -834,14 +993,15 @@ pkcs11_fetch_rsa_pubkey(struct pkcs11_pr
memset(&key_attr, 0, sizeof(key_attr));
key_attr[0].type = CKA_ID;
- key_attr[1].type = CKA_MODULUS;
- key_attr[2].type = CKA_PUBLIC_EXPONENT;
+ key_attr[1].type = CKA_LABEL;
+ key_attr[2].type = CKA_MODULUS;
+ key_attr[3].type = CKA_PUBLIC_EXPONENT;
- session = p->slotinfo[slotidx].session;
- f = p->function_list;
+ session = p->module->slotinfo[slotidx].session;
+ f = p->module->function_list;
/* figure out size of the attributes */
- rv = f->C_GetAttributeValue(session, *obj, key_attr, 3);
+ rv = f->C_GetAttributeValue(session, *obj, key_attr, nattr);
if (rv != CKR_OK) {
error("C_GetAttributeValue failed: %lu", rv);
return (NULL);
@@ -852,19 +1012,19 @@ pkcs11_fetch_rsa_pubkey(struct pkcs11_pr
* ensure that none of the others are zero length.
* XXX assumes CKA_ID is always first.
*/
- if (key_attr[1].ulValueLen == 0 ||
- key_attr[2].ulValueLen == 0) {
+ if (key_attr[2].ulValueLen == 0 ||
+ key_attr[3].ulValueLen == 0) {
error("invalid attribute length");
return (NULL);
}
/* allocate buffers for attributes */
- for (i = 0; i < 3; i++)
+ for (i = 0; i < nattr; i++)
if (key_attr[i].ulValueLen > 0)
key_attr[i].pValue = xcalloc(1, key_attr[i].ulValueLen);
/* retrieve ID, modulus and public exponent of RSA key */
- rv = f->C_GetAttributeValue(session, *obj, key_attr, 3);
+ rv = f->C_GetAttributeValue(session, *obj, key_attr, nattr);
if (rv != CKR_OK) {
error("C_GetAttributeValue failed: %lu", rv);
goto fail;
@@ -876,8 +1036,8 @@ pkcs11_fetch_rsa_pubkey(struct pkcs11_pr
goto fail;
}
- rsa_n = BN_bin2bn(key_attr[1].pValue, key_attr[1].ulValueLen, NULL);
- rsa_e = BN_bin2bn(key_attr[2].pValue, key_attr[2].ulValueLen, NULL);
+ rsa_n = BN_bin2bn(key_attr[2].pValue, key_attr[2].ulValueLen, NULL);
+ rsa_e = BN_bin2bn(key_attr[3].pValue, key_attr[3].ulValueLen, NULL);
if (rsa_n == NULL || rsa_e == NULL) {
error("BN_bin2bn failed");
goto fail;
@@ -886,7 +1046,7 @@ pkcs11_fetch_rsa_pubkey(struct pkcs11_pr
fatal_f("set key");
rsa_n = rsa_e = NULL; /* transferred */
- if (pkcs11_rsa_wrap(p, slotidx, &key_attr[0], rsa))
+ if (pkcs11_rsa_wrap(p, slotidx, &key_attr[0], &key_attr[1], rsa))
goto fail;
key = sshkey_new(KEY_UNSPEC);
@@ -901,7 +1061,7 @@ pkcs11_fetch_rsa_pubkey(struct pkcs11_pr
rsa = NULL; /* now owned by key */
fail:
- for (i = 0; i < 3; i++)
+ for (i = 0; i < nattr; i++)
free(key_attr[i].pValue);
RSA_free(rsa);
@@ -912,7 +1072,8 @@ static int
pkcs11_fetch_x509_pubkey(struct pkcs11_provider *p, CK_ULONG slotidx,
CK_OBJECT_HANDLE *obj, struct sshkey **keyp, char **labelp)
{
- CK_ATTRIBUTE cert_attr[3];
+ CK_ATTRIBUTE cert_attr[4];
+ int nattr = 4;
CK_SESSION_HANDLE session;
CK_FUNCTION_LIST *f = NULL;
CK_RV rv;
@@ -936,14 +1097,15 @@ pkcs11_fetch_x509_pubkey(struct pkcs11_p
memset(&cert_attr, 0, sizeof(cert_attr));
cert_attr[0].type = CKA_ID;
- cert_attr[1].type = CKA_SUBJECT;
- cert_attr[2].type = CKA_VALUE;
+ cert_attr[1].type = CKA_LABEL;
+ cert_attr[2].type = CKA_SUBJECT;
+ cert_attr[3].type = CKA_VALUE;
- session = p->slotinfo[slotidx].session;
- f = p->function_list;
+ session = p->module->slotinfo[slotidx].session;
+ f = p->module->function_list;
/* figure out size of the attributes */
- rv = f->C_GetAttributeValue(session, *obj, cert_attr, 3);
+ rv = f->C_GetAttributeValue(session, *obj, cert_attr, nattr);
if (rv != CKR_OK) {
error("C_GetAttributeValue failed: %lu", rv);
return -1;
@@ -955,18 +1117,19 @@ pkcs11_fetch_x509_pubkey(struct pkcs11_p
* XXX assumes CKA_ID is always first.
*/
if (cert_attr[1].ulValueLen == 0 ||
- cert_attr[2].ulValueLen == 0) {
+ cert_attr[2].ulValueLen == 0 ||
+ cert_attr[3].ulValueLen == 0) {
error("invalid attribute length");
return -1;
}
/* allocate buffers for attributes */
- for (i = 0; i < 3; i++)
+ for (i = 0; i < nattr; i++)
if (cert_attr[i].ulValueLen > 0)
cert_attr[i].pValue = xcalloc(1, cert_attr[i].ulValueLen);
/* retrieve ID, subject and value of certificate */
- rv = f->C_GetAttributeValue(session, *obj, cert_attr, 3);
+ rv = f->C_GetAttributeValue(session, *obj, cert_attr, nattr);
if (rv != CKR_OK) {
error("C_GetAttributeValue failed: %lu", rv);
goto out;
@@ -980,8 +1143,8 @@ pkcs11_fetch_x509_pubkey(struct pkcs11_p
subject = xstrdup("invalid subject");
X509_NAME_free(x509_name);
- cp = cert_attr[2].pValue;
- if ((x509 = d2i_X509(NULL, &cp, cert_attr[2].ulValueLen)) == NULL) {
+ cp = cert_attr[3].pValue;
+ if ((x509 = d2i_X509(NULL, &cp, cert_attr[3].ulValueLen)) == NULL) {
error("d2i_x509 failed");
goto out;
}
@@ -1001,7 +1164,7 @@ pkcs11_fetch_x509_pubkey(struct pkcs11_p
goto out;
}
- if (pkcs11_rsa_wrap(p, slotidx, &cert_attr[0], rsa))
+ if (pkcs11_rsa_wrap(p, slotidx, &cert_attr[0], &cert_attr[1], rsa))
goto out;
key = sshkey_new(KEY_UNSPEC);
@@ -1031,7 +1194,7 @@ pkcs11_fetch_x509_pubkey(struct pkcs11_p
goto out;
}
- if (pkcs11_ecdsa_wrap(p, slotidx, &cert_attr[0], ec))
+ if (pkcs11_ecdsa_wrap(p, slotidx, &cert_attr[0], &cert_attr[1], ec))
goto out;
key = sshkey_new(KEY_UNSPEC);
@@ -1051,7 +1214,7 @@ pkcs11_fetch_x509_pubkey(struct pkcs11_p
goto out;
}
out:
- for (i = 0; i < 3; i++)
+ for (i = 0; i < nattr; i++)
free(cert_attr[i].pValue);
X509_free(x509);
RSA_free(rsa);
@@ -1102,11 +1265,12 @@ note_key(struct pkcs11_provider *p, CK_U
*/
static int
pkcs11_fetch_certs(struct pkcs11_provider *p, CK_ULONG slotidx,
- struct sshkey ***keysp, char ***labelsp, int *nkeys)
+ struct sshkey ***keysp, char ***labelsp, int *nkeys, struct pkcs11_uri *uri)
{
struct sshkey *key = NULL;
CK_OBJECT_CLASS key_class;
- CK_ATTRIBUTE key_attr[1];
+ CK_ATTRIBUTE key_attr[3];
+ int nattr = 1;
CK_SESSION_HANDLE session;
CK_FUNCTION_LIST *f = NULL;
CK_RV rv;
@@ -1123,10 +1287,23 @@ pkcs11_fetch_certs(struct pkcs11_provide
key_attr[0].pValue = &key_class;
key_attr[0].ulValueLen = sizeof(key_class);
- session = p->slotinfo[slotidx].session;
- f = p->function_list;
+ if (uri->id != NULL) {
+ key_attr[nattr].type = CKA_ID;
+ key_attr[nattr].pValue = uri->id;
+ key_attr[nattr].ulValueLen = uri->id_len;
+ nattr++;
+ }
+ if (uri->object != NULL) {
+ key_attr[nattr].type = CKA_LABEL;
+ key_attr[nattr].pValue = uri->object;
+ key_attr[nattr].ulValueLen = strlen(uri->object);
+ nattr++;
+ }
+
+ session = p->module->slotinfo[slotidx].session;
+ f = p->module->function_list;
- rv = f->C_FindObjectsInit(session, key_attr, 1);
+ rv = f->C_FindObjectsInit(session, key_attr, nattr);
if (rv != CKR_OK) {
error("C_FindObjectsInit failed: %lu", rv);
goto fail;
@@ -1207,11 +1384,12 @@ fail:
*/
static int
pkcs11_fetch_keys(struct pkcs11_provider *p, CK_ULONG slotidx,
- struct sshkey ***keysp, char ***labelsp, int *nkeys)
+ struct sshkey ***keysp, char ***labelsp, int *nkeys, struct pkcs11_uri *uri)
{
struct sshkey *key = NULL;
CK_OBJECT_CLASS key_class;
- CK_ATTRIBUTE key_attr[2];
+ CK_ATTRIBUTE key_attr[3];
+ int nattr = 1;
CK_SESSION_HANDLE session;
CK_FUNCTION_LIST *f = NULL;
CK_RV rv;
@@ -1227,10 +1405,23 @@ pkcs11_fetch_keys(struct pkcs11_provider
key_attr[0].pValue = &key_class;
key_attr[0].ulValueLen = sizeof(key_class);
- session = p->slotinfo[slotidx].session;
- f = p->function_list;
+ if (uri->id != NULL) {
+ key_attr[nattr].type = CKA_ID;
+ key_attr[nattr].pValue = uri->id;
+ key_attr[nattr].ulValueLen = uri->id_len;
+ nattr++;
+ }
+ if (uri->object != NULL) {
+ key_attr[nattr].type = CKA_LABEL;
+ key_attr[nattr].pValue = uri->object;
+ key_attr[nattr].ulValueLen = strlen(uri->object);
+ nattr++;
+ }
- rv = f->C_FindObjectsInit(session, key_attr, 1);
+ session = p->module->slotinfo[slotidx].session;
+ f = p->module->function_list;
+
+ rv = f->C_FindObjectsInit(session, key_attr, nattr);
if (rv != CKR_OK) {
error("C_FindObjectsInit failed: %lu", rv);
goto fail;
@@ -1499,16 +1690,10 @@ pkcs11_ecdsa_generate_private_key(struct
}
#endif /* WITH_PKCS11_KEYGEN */
-/*
- * register a new provider, fails if provider already exists. if
- * keyp is provided, fetch keys.
- */
static int
-pkcs11_register_provider(char *provider_id, char *pin,
- struct sshkey ***keyp, char ***labelsp,
- struct pkcs11_provider **providerp, CK_ULONG user)
+pkcs11_initialize_provider(struct pkcs11_uri *uri, struct pkcs11_provider **providerp)
{
- int nkeys, need_finalize = 0;
+ int need_finalize = 0;
int ret = -1;
struct pkcs11_provider *p = NULL;
void *handle = NULL;
@@ -1517,164 +1702,305 @@
CK_FUNCTION_LIST *f = NULL;
CK_TOKEN_INFO *token;
CK_ULONG i;
+ char *provider_module = NULL;
+ struct pkcs11_module *m = NULL;
- if (providerp == NULL)
+ /* if no provider specified, fallback to p11-kit */
+ if (uri->module_path == NULL) {
+#ifdef PKCS11_DEFAULT_PROVIDER
+ provider_module = strdup(PKCS11_DEFAULT_PROVIDER);
+#else
+ error_f("No module path provided");
goto fail;
- *providerp = NULL;
+#endif
+ } else {
+ provider_module = strdup(uri->module_path);
+ }
- if (keyp != NULL)
- *keyp = NULL;
- if (labelsp != NULL)
- *labelsp = NULL;
+ p = xcalloc(1, sizeof(*p));
+ p->name = pkcs11_uri_get(uri);
- if (pkcs11_provider_lookup(provider_id) != NULL) {
- debug_f("provider already registered: %s", provider_id);
- goto fail;
+ if ((m = pkcs11_provider_lookup_module(provider_module)) != NULL
+ && m->valid) {
+ debug_f("provider module already initialized: %s", provider_module);
+ free(provider_module);
+ /* Skip the initialization of PKCS#11 module */
+ m->refcount++;
+ p->module = m;
+ p->valid = 1;
+ TAILQ_INSERT_TAIL(&pkcs11_providers, p, next);
+ p->refcount++; /* add to provider list */
+ *providerp = p;
+ return 0;
+ } else {
+ m = xcalloc(1, sizeof(*m));
+ p->module = m;
+ m->refcount++;
}
+
/* open shared pkcs11-library */
- if ((handle = dlopen(provider_id, RTLD_NOW)) == NULL) {
- error("dlopen %s failed: %s", provider_id, dlerror());
+ if ((handle = dlopen(provider_module, RTLD_NOW)) == NULL) {
+ error("dlopen %s failed: %s", provider_module, dlerror());
goto fail;
}
if ((getfunctionlist = dlsym(handle, "C_GetFunctionList")) == NULL) {
error("dlsym(C_GetFunctionList) failed: %s", dlerror());
goto fail;
}
- p = xcalloc(1, sizeof(*p));
- p->name = xstrdup(provider_id);
- p->handle = handle;
+
+ p->module->handle = handle;
/* setup the pkcs11 callbacks */
if ((rv = (*getfunctionlist)(&f)) != CKR_OK) {
error("C_GetFunctionList for provider %s failed: %lu",
- provider_id, rv);
+ provider_module, rv);
goto fail;
}
- p->function_list = f;
+ m->function_list = f;
if ((rv = f->C_Initialize(NULL)) != CKR_OK) {
error("C_Initialize for provider %s failed: %lu",
- provider_id, rv);
+ provider_module, rv);
goto fail;
}
need_finalize = 1;
- if ((rv = f->C_GetInfo(&p->info)) != CKR_OK) {
+ if ((rv = f->C_GetInfo(&m->info)) != CKR_OK) {
error("C_GetInfo for provider %s failed: %lu",
- provider_id, rv);
+ provider_module, rv);
goto fail;
}
- rmspace(p->info.manufacturerID, sizeof(p->info.manufacturerID));
- rmspace(p->info.libraryDescription, sizeof(p->info.libraryDescription));
- debug("provider %s: manufacturerID <%s> cryptokiVersion %d.%d"
- " libraryDescription <%s> libraryVersion %d.%d",
- provider_id,
- p->info.manufacturerID,
- p->info.cryptokiVersion.major,
- p->info.cryptokiVersion.minor,
- p->info.libraryDescription,
- p->info.libraryVersion.major,
- p->info.libraryVersion.minor);
- if ((rv = f->C_GetSlotList(CK_TRUE, NULL, &p->nslots)) != CKR_OK) {
+ rmspace(m->info.manufacturerID, sizeof(m->info.manufacturerID));
+ if (uri->lib_manuf != NULL &&
+ strncmp(uri->lib_manuf, m->info.manufacturerID, 32)) {
+ debug_f("Skipping provider %s not matching library_manufacturer",
+ m->info.manufacturerID);
+ goto fail;
+ }
+ rmspace(m->info.libraryDescription, sizeof(m->info.libraryDescription));
+ debug("provider %s: manufacturerID <%.32s> cryptokiVersion %d.%d"
+ " libraryDescription <%.32s> libraryVersion %d.%d",
+ provider_module,
+ m->info.manufacturerID,
+ m->info.cryptokiVersion.major,
+ m->info.cryptokiVersion.minor,
+ m->info.libraryDescription,
+ m->info.libraryVersion.major,
+ m->info.libraryVersion.minor);
+
+ if ((rv = f->C_GetSlotList(CK_TRUE, NULL, &m->nslots)) != CKR_OK) {
error("C_GetSlotList failed: %lu", rv);
goto fail;
}
- if (p->nslots == 0) {
- debug_f("provider %s returned no slots", provider_id);
+ if (m->nslots == 0) {
+ debug_f("provider %s returned no slots", provider_module);
ret = -SSH_PKCS11_ERR_NO_SLOTS;
goto fail;
}
- p->slotlist = xcalloc(p->nslots, sizeof(CK_SLOT_ID));
- if ((rv = f->C_GetSlotList(CK_TRUE, p->slotlist, &p->nslots))
+ m->slotlist = xcalloc(m->nslots, sizeof(CK_SLOT_ID));
+ if ((rv = f->C_GetSlotList(CK_TRUE, m->slotlist, &m->nslots))
!= CKR_OK) {
error("C_GetSlotList for provider %s failed: %lu",
- provider_id, rv);
+ provider_module, rv);
goto fail;
}
- p->slotinfo = xcalloc(p->nslots, sizeof(struct pkcs11_slotinfo));
p->valid = 1;
- nkeys = 0;
- for (i = 0; i < p->nslots; i++) {
- token = &p->slotinfo[i].token;
- if ((rv = f->C_GetTokenInfo(p->slotlist[i], token))
+ m->slotinfo = xcalloc(m->nslots, sizeof(struct pkcs11_slotinfo));
+ m->valid = 1;
+ for (i = 0; i < m->nslots; i++) {
+ token = &m->slotinfo[i].token;
+ if ((rv = f->C_GetTokenInfo(m->slotlist[i], token))
!= CKR_OK) {
error("C_GetTokenInfo for provider %s slot %lu "
- "failed: %lu", provider_id, (u_long)i, rv);
- continue;
- }
- if ((token->flags & CKF_TOKEN_INITIALIZED) == 0) {
- debug2_f("ignoring uninitialised token in "
- "provider %s slot %lu", provider_id, (u_long)i);
+ "failed: %lu", provider_module, (u_long)i, rv);
+ token->flags = 0;
continue;
}
rmspace(token->label, sizeof(token->label));
rmspace(token->manufacturerID, sizeof(token->manufacturerID));
rmspace(token->model, sizeof(token->model));
rmspace(token->serialNumber, sizeof(token->serialNumber));
- debug("provider %s slot %lu: label <%s> manufacturerID <%s> "
- "model <%s> serial <%s> flags 0x%lx",
- provider_id, (unsigned long)i,
+ }
+ m->module_path = provider_module;
+ provider_module = NULL;
+
+ /* insert unconditionally -- remove if there will be no keys later */
+ TAILQ_INSERT_TAIL(&pkcs11_providers, p, next);
+ p->refcount++; /* add to provider list */
+ *providerp = p;
+ return 0;
+
+fail:
+ if (need_finalize && (rv = f->C_Finalize(NULL)) != CKR_OK)
+ error("C_Finalize for provider %s failed: %lu",
+ provider_module, rv);
+ free(provider_module);
+ if (m) {
+ free(m->slotlist);
+ free(m);
+ }
+ if (p) {
+ free(p->name);
+ free(p);
+ }
+ if (handle)
+ dlclose(handle);
+ return ret;
+}
+
+/*
+ * register a new provider, fails if provider already exists. if
+ * keyp is provided, fetch keys.
+ */
+static int
+pkcs11_register_provider_by_uri(struct pkcs11_uri *uri, char *pin,
+ struct sshkey ***keyp, char ***labelsp, struct pkcs11_provider **providerp,
+ CK_ULONG user)
+{
+ int nkeys;
+ int ret = -1;
+ struct pkcs11_provider *p = NULL;
+ CK_ULONG i;
+ CK_TOKEN_INFO *token;
+ char *provider_uri = NULL;
+
+ if (providerp == NULL)
+ goto fail;
+ *providerp = NULL;
+
+ if (keyp != NULL)
+ *keyp = NULL;
+
+ if ((ret = pkcs11_initialize_provider(uri, &p)) != 0) {
+ goto fail;
+ }
+
+ provider_uri = pkcs11_uri_get(uri);
+ if (pin == NULL && uri->pin != NULL) {
+ pin = uri->pin;
+ }
+ nkeys = 0;
+ for (i = 0; i < p->module->nslots; i++) {
+ token = &p->module->slotinfo[i].token;
+ if ((token->flags & CKF_TOKEN_INITIALIZED) == 0) {
+ debug2_f("ignoring uninitialised token in "
+ "provider %s slot %lu", provider_uri, (u_long)i);
+ continue;
+ }
+ if (uri->token != NULL &&
+ strncmp(token->label, uri->token, 32) != 0) {
+ debug2_f("ignoring token not matching label (%.32s) "
+ "specified by PKCS#11 URI in slot %lu",
+ token->label, (unsigned long)i);
+ continue;
+ }
+ if (uri->manuf != NULL &&
+ strncmp(token->manufacturerID, uri->manuf, 32) != 0) {
+ debug2_f("ignoring token not matching requrested "
+ "manufacturerID (%.32s) specified by PKCS#11 URI in "
+ "slot %lu", token->manufacturerID, (unsigned long)i);
+ continue;
+ }
+ if (uri->serial != NULL &&
+ strncmp(token->serialNumber, uri->serial, 16) != 0) {
+ debug2_f("ignoring token not matching requrested "
+ "serialNumber (%s) specified by PKCS#11 URI in "
+ "slot %lu", token->serialNumber, (unsigned long)i);
+ continue;
+ }
+ debug("provider %s slot %lu: label <%.32s> manufacturerID <%.32s> "
+ "model <%.16s> serial <%.16s> flags 0x%lx",
+ provider_uri, (unsigned long)i,
token->label, token->manufacturerID, token->model,
token->serialNumber, token->flags);
/*
- * open session, login with pin and retrieve public
- * keys (if keyp is provided)
+ * open session if not yet openend, login with pin and
+ * retrieve public keys (if keyp is provided)
*/
- if ((ret = pkcs11_open_session(p, i, pin, user)) != 0 ||
+ if ((p->module->slotinfo[i].session != 0 ||
+ (ret = pkcs11_open_session(p, i, pin, user)) != 0) && /* ??? */
keyp == NULL)
continue;
- pkcs11_fetch_keys(p, i, keyp, labelsp, &nkeys);
- pkcs11_fetch_certs(p, i, keyp, labelsp, &nkeys);
- if (nkeys == 0 && !p->slotinfo[i].logged_in &&
+ pkcs11_fetch_keys(p, i, keyp, labelsp, &nkeys, uri);
+ pkcs11_fetch_certs(p, i, keyp, labelsp, &nkeys, uri);
+ if (nkeys == 0 && !p->module->slotinfo[i].logged_in &&
pkcs11_interactive) {
/*
* Some tokens require login before they will
* expose keys.
*/
- if (pkcs11_login_slot(p, &p->slotinfo[i],
+ debug3_f("Trying to login as there were no keys found");
+ if (pkcs11_login_slot(p, &p->module->slotinfo[i],
CKU_USER) < 0) {
error("login failed");
continue;
}
- pkcs11_fetch_keys(p, i, keyp, labelsp, &nkeys);
- pkcs11_fetch_certs(p, i, keyp, labelsp, &nkeys);
+ pkcs11_fetch_keys(p, i, keyp, labelsp, &nkeys, uri);
+ pkcs11_fetch_certs(p, i, keyp, labelsp, &nkeys, uri);
+ }
+ if (nkeys == 0 && uri->object != NULL) {
+ debug3_f("No keys found. Retrying without label (%.32s) ",
+ uri->object);
+ /* Try once more without the label filter */
+ char *label = uri->object;
+ uri->object = NULL; /* XXX clone uri? */
+ pkcs11_fetch_keys(p, i, keyp, labelsp, &nkeys, uri);
+ pkcs11_fetch_certs(p, i, keyp, labelsp, &nkeys, uri);
+ uri->object = label;
}
}
+ pin = NULL; /* Will be cleaned up with URI */
/* now owned by caller */
*providerp = p;
- TAILQ_INSERT_TAIL(&pkcs11_providers, p, next);
- p->refcount++; /* add to provider list */
-
+ free(provider_uri);
return (nkeys);
fail:
- if (need_finalize && (rv = f->C_Finalize(NULL)) != CKR_OK)
- error("C_Finalize for provider %s failed: %lu",
- provider_id, rv);
if (p) {
- free(p->name);
- free(p->slotlist);
- free(p->slotinfo);
- free(p);
+ TAILQ_REMOVE(&pkcs11_providers, p, next);
+ pkcs11_provider_unref(p);
}
- if (handle)
- dlclose(handle);
if (ret > 0)
ret = -1;
return (ret);
}
-/*
- * register a new provider and get number of keys hold by the token,
- * fails if provider already exists
- */
+static int
+pkcs11_register_provider(char *provider_id, char *pin, struct sshkey ***keyp,
+ char ***labelsp, struct pkcs11_provider **providerp, CK_ULONG user)
+{
+ struct pkcs11_uri *uri = NULL;
+ int r;
+
+ debug_f("called, provider_id = %s", provider_id);
+
+ uri = pkcs11_uri_init();
+ if (uri == NULL)
+ fatal("failed to init PKCS#11 URI");
+
+ if (strlen(provider_id) >= strlen(PKCS11_URI_SCHEME) &&
+ strncmp(provider_id, PKCS11_URI_SCHEME, strlen(PKCS11_URI_SCHEME)) == 0) {
+ if (pkcs11_uri_parse(provider_id, uri) != 0)
+ fatal("Failed to parse PKCS#11 URI");
+ } else {
+ uri->module_path = strdup(provider_id);
+ }
+
+ r = pkcs11_register_provider_by_uri(uri, pin, keyp, labelsp, providerp, user);
+ pkcs11_uri_cleanup(uri);
+
+ return r;
+}
+
int
-pkcs11_add_provider(char *provider_id, char *pin, struct sshkey ***keyp,
- char ***labelsp)
+pkcs11_add_provider_by_uri(struct pkcs11_uri *uri, char *pin,
+ struct sshkey ***keyp, char ***labelsp)
{
struct pkcs11_provider *p = NULL;
int nkeys;
+ char *provider_uri = pkcs11_uri_get(uri);
+
+ debug_f("called, provider_uri = %s", provider_uri);
- nkeys = pkcs11_register_provider(provider_id, pin, keyp, labelsp,
- &p, CKU_USER);
+ nkeys = pkcs11_register_provider_by_uri(uri, pin, keyp, labelsp, &p, CKU_USER);
/* no keys found or some other error, de-register provider */
if (nkeys <= 0 && p != NULL) {
@@ -1684,7 +2012,37 @@ pkcs11_add_provider(char *provider_id, c
pkcs11_provider_unref(p);
}
if (nkeys == 0)
- debug_f("provider %s returned no keys", provider_id);
+ debug_f("provider %s returned no keys", provider_uri);
+
+ free(provider_uri);
+ return nkeys;
+}
+
+/*
+ * register a new provider and get number of keys hold by the token,
+ * fails if provider already exists
+ */
+int
+pkcs11_add_provider(char *provider_id, char *pin,
+ struct sshkey ***keyp, char ***labelsp)
+{
+ struct pkcs11_uri *uri;
+ int nkeys;
+
+ uri = pkcs11_uri_init();
+ if (uri == NULL)
+ fatal("Failed to init PKCS#11 URI");
+
+ if (strlen(provider_id) >= strlen(PKCS11_URI_SCHEME) &&
+ strncmp(provider_id, PKCS11_URI_SCHEME, strlen(PKCS11_URI_SCHEME)) == 0) {
+ if (pkcs11_uri_parse(provider_id, uri) != 0)
+ fatal("Failed to parse PKCS#11 URI");
+ } else {
+ uri->module_path = strdup(provider_id);
+ }
+
+ nkeys = pkcs11_add_provider_by_uri(uri, pin, keyp, labelsp);
+ pkcs11_uri_cleanup(uri);
return (nkeys);
}
diff -up openssh-8.7p1/ssh-pkcs11.h.pkcs11-uri openssh-8.7p1/ssh-pkcs11.h
--- openssh-8.7p1/ssh-pkcs11.h.pkcs11-uri 2021-08-20 06:03:49.000000000 +0200
+++ openssh-8.7p1/ssh-pkcs11.h 2021-08-30 13:07:43.666700121 +0200
@@ -22,10 +22,14 @@
#define SSH_PKCS11_ERR_PIN_REQUIRED 4
#define SSH_PKCS11_ERR_PIN_LOCKED 5
+#include "ssh-pkcs11-uri.h"
+
int pkcs11_init(int);
void pkcs11_terminate(void);
int pkcs11_add_provider(char *, char *, struct sshkey ***, char ***);
+int pkcs11_add_provider_by_uri(struct pkcs11_uri *, char *, struct sshkey ***, char ***);
int pkcs11_del_provider(char *);
+int pkcs11_uri_write(const struct sshkey *, FILE *);
#ifdef WITH_PKCS11_KEYGEN
struct sshkey *
pkcs11_gakp(char *, char *, unsigned int, char *, unsigned int,
diff -up openssh-8.7p1/ssh-pkcs11-uri.c.pkcs11-uri openssh-8.7p1/ssh-pkcs11-uri.c
--- openssh-8.7p1/ssh-pkcs11-uri.c.pkcs11-uri 2021-08-30 13:07:43.667700130 +0200
+++ openssh-8.7p1/ssh-pkcs11-uri.c 2021-08-30 13:07:43.667700130 +0200
@@ -0,0 +1,437 @@
+/*
+ * Copyright (c) 2017 Red Hat
+ *
+ * Authors: Jakub Jelen <jjelen@redhat.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "includes.h"
+
+#ifdef ENABLE_PKCS11
+
+#include <stdio.h>
+#include <string.h>
+
+#include "sshkey.h"
+#include "sshbuf.h"
+#include "log.h"
+
+#define CRYPTOKI_COMPAT
+#include "pkcs11.h"
+
+#include "ssh-pkcs11-uri.h"
+
+#define PKCS11_URI_PATH_SEPARATOR ";"
+#define PKCS11_URI_QUERY_SEPARATOR "&"
+#define PKCS11_URI_VALUE_SEPARATOR "="
+#define PKCS11_URI_ID "id"
+#define PKCS11_URI_TOKEN "token"
+#define PKCS11_URI_OBJECT "object"
+#define PKCS11_URI_LIB_MANUF "library-manufacturer"
+#define PKCS11_URI_MANUF "manufacturer"
+#define PKCS11_URI_SERIAL "serial"
+#define PKCS11_URI_MODULE_PATH "module-path"
+#define PKCS11_URI_PIN_VALUE "pin-value"
+
+/* Keyword tokens. */
+typedef enum {
+ pId, pToken, pObject, pLibraryManufacturer, pManufacturer, pSerial,
+ pModulePath, pPinValue, pBadOption
+} pkcs11uriOpCodes;
+
+/* Textual representation of the tokens. */
+static struct {
+ const char *name;
+ pkcs11uriOpCodes opcode;
+} keywords[] = {
+ { PKCS11_URI_ID, pId },
+ { PKCS11_URI_TOKEN, pToken },
+ { PKCS11_URI_OBJECT, pObject },
+ { PKCS11_URI_LIB_MANUF, pLibraryManufacturer },
+ { PKCS11_URI_MANUF, pManufacturer },
+ { PKCS11_URI_SERIAL, pSerial },
+ { PKCS11_URI_MODULE_PATH, pModulePath },
+ { PKCS11_URI_PIN_VALUE, pPinValue },
+ { NULL, pBadOption }
+};
+
+static pkcs11uriOpCodes
+parse_token(const char *cp)
+{
+ u_int i;
+
+ for (i = 0; keywords[i].name; i++)
+ if (strncasecmp(cp, keywords[i].name,
+ strlen(keywords[i].name)) == 0)
+ return keywords[i].opcode;
+
+ return pBadOption;
+}
+
+int
+percent_decode(char *data, char **outp)
+{
+ char tmp[3];
+ char *out, *tmp_end;
+ char *p = data;
+ long value;
+ size_t outlen = 0;
+
+ out = malloc(strlen(data)+1); /* upper bound */
+ if (out == NULL)
+ return -1;
+ while (*p != '\0') {
+ switch (*p) {
+ case '%':
+ p++;
+ if (*p == '\0')
+ goto fail;
+ tmp[0] = *p++;
+ if (*p == '\0')
+ goto fail;
+ tmp[1] = *p++;
+ tmp[2] = '\0';
+ tmp_end = NULL;
+ value = strtol(tmp, &tmp_end, 16);
+ if (tmp_end != tmp+2)
+ goto fail;
+ else
+ out[outlen++] = (char) value;
+ break;
+ default:
+ out[outlen++] = *p++;
+ break;
+ }
+ }
+
+ /* zero terminate */
+ out[outlen] = '\0';
+ *outp = out;
+ return outlen;
+fail:
+ free(out);
+ return -1;
+}
+
+struct sshbuf *
+percent_encode(const char *data, size_t length, const char *allow_list)
+{
+ struct sshbuf *b = NULL;
+ char tmp[4], *cp;
+ size_t i;
+
+ if ((b = sshbuf_new()) == NULL)
+ return NULL;
+ for (i = 0; i < length; i++) {
+ cp = strchr(allow_list, data[i]);
+ /* if c is specified as '\0' pointer to terminator is returned !! */
+ if (cp != NULL && *cp != '\0') {
+ if (sshbuf_put(b, &data[i], 1) != 0)
+ goto err;
+ } else
+ if (snprintf(tmp, 4, "%%%02X", (unsigned char) data[i]) < 3
+ || sshbuf_put(b, tmp, 3) != 0)
+ goto err;
+ }
+ if (sshbuf_put(b, "\0", 1) == 0)
+ return b;
+err:
+ sshbuf_free(b);
+ return NULL;
+}
+
+char *
+pkcs11_uri_append(char *part, const char *separator, const char *key,
+ struct sshbuf *value)
+{
+ char *new_part;
+ size_t size = 0;
+
+ if (value == NULL)
+ return NULL;
+
+ size = asprintf(&new_part,
+ "%s%s%s" PKCS11_URI_VALUE_SEPARATOR "%s",
+ (part != NULL ? part : ""),
+ (part != NULL ? separator : ""),
+ key, sshbuf_ptr(value));
+ sshbuf_free(value);
+ free(part);
+
+ if (size <= 0)
+ return NULL;
+ return new_part;
+}
+
+char *
+pkcs11_uri_get(struct pkcs11_uri *uri)
+{
+ size_t size = 0;
+ char *p = NULL, *path = NULL, *query = NULL;
+
+ /* compose a percent-encoded ID */
+ if (uri->id_len > 0) {
+ struct sshbuf *key_id = percent_encode(uri->id, uri->id_len, "");
+ path = pkcs11_uri_append(path, PKCS11_URI_PATH_SEPARATOR,
+ PKCS11_URI_ID, key_id);
+ if (path == NULL)
+ goto err;
+ }
+
+ /* Write object label */
+ if (uri->object) {
+ struct sshbuf *label = percent_encode(uri->object, strlen(uri->object),
+ PKCS11_URI_WHITELIST);
+ path = pkcs11_uri_append(path, PKCS11_URI_PATH_SEPARATOR,
+ PKCS11_URI_OBJECT, label);
+ if (path == NULL)
+ goto err;
+ }
+
+ /* Write token label */
+ if (uri->token) {
+ struct sshbuf *label = percent_encode(uri->token, strlen(uri->token),
+ PKCS11_URI_WHITELIST);
+ path = pkcs11_uri_append(path, PKCS11_URI_PATH_SEPARATOR,
+ PKCS11_URI_TOKEN, label);
+ if (path == NULL)
+ goto err;
+ }
+
+ /* Write manufacturer */
+ if (uri->manuf) {
+ struct sshbuf *manuf = percent_encode(uri->manuf,
+ strlen(uri->manuf), PKCS11_URI_WHITELIST);
+ path = pkcs11_uri_append(path, PKCS11_URI_PATH_SEPARATOR,
+ PKCS11_URI_MANUF, manuf);
+ if (path == NULL)
+ goto err;
+ }
+
+ /* Write serial */
+ if (uri->serial) {
+ struct sshbuf *serial = percent_encode(uri->serial,
+ strlen(uri->serial), PKCS11_URI_WHITELIST);
+ path = pkcs11_uri_append(path, PKCS11_URI_PATH_SEPARATOR,
+ PKCS11_URI_SERIAL, serial);
+ if (path == NULL)
+ goto err;
+ }
+
+ /* Write module_path */
+ if (uri->module_path) {
+ struct sshbuf *module = percent_encode(uri->module_path,
+ strlen(uri->module_path), PKCS11_URI_WHITELIST "/");
+ query = pkcs11_uri_append(query, PKCS11_URI_QUERY_SEPARATOR,
+ PKCS11_URI_MODULE_PATH, module);
+ if (query == NULL)
+ goto err;
+ }
+
+ size = asprintf(&p, PKCS11_URI_SCHEME "%s%s%s",
+ path != NULL ? path : "",
+ query != NULL ? "?" : "",
+ query != NULL ? query : "");
+err:
+ free(query);
+ free(path);
+ if (size <= 0)
+ return NULL;
+ return p;
+}
+
+struct pkcs11_uri *
+pkcs11_uri_init()
+{
+ struct pkcs11_uri *d = calloc(1, sizeof(struct pkcs11_uri));
+ return d;
+}
+
+void
+pkcs11_uri_cleanup(struct pkcs11_uri *pkcs11)
+{
+ if (pkcs11 == NULL) {
+ return;
+ }
+
+ free(pkcs11->id);
+ free(pkcs11->module_path);
+ free(pkcs11->token);
+ free(pkcs11->object);
+ free(pkcs11->lib_manuf);
+ free(pkcs11->manuf);
+ free(pkcs11->serial);
+ if (pkcs11->pin)
+ freezero(pkcs11->pin, strlen(pkcs11->pin));
+ free(pkcs11);
+}
+
+int
+pkcs11_uri_parse(const char *uri, struct pkcs11_uri *pkcs11)
+{
+ char *saveptr1, *saveptr2, *str1, *str2, *tok;
+ int rv = 0, len;
+ char *p = NULL;
+
+ size_t scheme_len = strlen(PKCS11_URI_SCHEME);
+ if (strlen(uri) < scheme_len || /* empty URI matches everything */
+ strncmp(uri, PKCS11_URI_SCHEME, scheme_len) != 0) {
+ error_f("The '%s' does not look like PKCS#11 URI", uri);
+ return -1;
+ }
+
+ if (pkcs11 == NULL) {
+ error_f("Bad arguments. The pkcs11 can't be null");
+ return -1;
+ }
+
+ /* skip URI schema name */
+ p = strdup(uri);
+ str1 = p;
+
+ /* everything before ? */
+ tok = strtok_r(str1, "?", &saveptr1);
+ if (tok == NULL) {
+ error_f("pk11-path expected, got EOF");
+ rv = -1;
+ goto out;
+ }
+
+ /* skip URI schema name:
+ * the scheme ensures that there is at least something before "?"
+ * allowing empty pk11-path. Resulting token at worst pointing to
+ * \0 byte */
+ tok = tok + scheme_len;
+
+ /* parse pk11-path */
+ for (str2 = tok; ; str2 = NULL) {
+ char **charptr, *arg = NULL;
+ pkcs11uriOpCodes opcode;
+ tok = strtok_r(str2, PKCS11_URI_PATH_SEPARATOR, &saveptr2);
+ if (tok == NULL)
+ break;
+ opcode = parse_token(tok);
+ if (opcode != pBadOption)
+ arg = tok + strlen(keywords[opcode].name) + 1; /* separator "=" */
+
+ switch (opcode) {
+ case pId:
+ /* CKA_ID */
+ if (pkcs11->id != NULL) {
+ verbose_f("The id already set in the PKCS#11 URI");
+ rv = -1;
+ goto out;
+ }
+ len = percent_decode(arg, &pkcs11->id);
+ if (len <= 0) {
+ verbose_f("Failed to percent-decode CKA_ID: %s", arg);
+ rv = -1;
+ goto out;
+ } else
+ pkcs11->id_len = len;
+ debug3_f("Setting CKA_ID = %s from PKCS#11 URI", arg);
+ break;
+ case pToken:
+ /* CK_TOKEN_INFO -> label */
+ charptr = &pkcs11->token;
+ parse_string:
+ if (*charptr != NULL) {
+ verbose_f("The %s already set in the PKCS#11 URI",
+ keywords[opcode].name);
+ rv = -1;
+ goto out;
+ }
+ percent_decode(arg, charptr);
+ debug3_f("Setting %s = %s from PKCS#11 URI",
+ keywords[opcode].name, *charptr);
+ break;
+
+ case pObject:
+ /* CK_TOKEN_INFO -> manufacturerID */
+ charptr = &pkcs11->object;
+ goto parse_string;
+
+ case pManufacturer:
+ /* CK_TOKEN_INFO -> manufacturerID */
+ charptr = &pkcs11->manuf;
+ goto parse_string;
+
+ case pSerial:
+ /* CK_TOKEN_INFO -> serialNumber */
+ charptr = &pkcs11->serial;
+ goto parse_string;
+
+ case pLibraryManufacturer:
+ /* CK_INFO -> manufacturerID */
+ charptr = &pkcs11->lib_manuf;
+ goto parse_string;
+
+ default:
+ /* Unrecognized attribute in the URI path SHOULD be error */
+ verbose_f("Unknown part of path in PKCS#11 URI: %s", tok);
+ }
+ }
+
+ tok = strtok_r(NULL, "?", &saveptr1);
+ if (tok == NULL) {
+ goto out;
+ }
+ /* parse pk11-query (optional) */
+ for (str2 = tok; ; str2 = NULL) {
+ char *arg;
+ pkcs11uriOpCodes opcode;
+ tok = strtok_r(str2, PKCS11_URI_QUERY_SEPARATOR, &saveptr2);
+ if (tok == NULL)
+ break;
+ opcode = parse_token(tok);
+ if (opcode != pBadOption)
+ arg = tok + strlen(keywords[opcode].name) + 1; /* separator "=" */
+
+ switch (opcode) {
+ case pModulePath:
+ /* module-path is PKCS11Provider */
+ if (pkcs11->module_path != NULL) {
+ verbose_f("Multiple module-path attributes are"
+ "not supported the PKCS#11 URI");
+ rv = -1;
+ goto out;
+ }
+ percent_decode(arg, &pkcs11->module_path);
+ debug3_f("Setting PKCS11Provider = %s from PKCS#11 URI",
+ pkcs11->module_path);
+ break;
+
+ case pPinValue:
+ /* pin-value */
+ if (pkcs11->pin != NULL) {
+ verbose_f("Multiple pin-value attributes are"
+ "not supported the PKCS#11 URI");
+ rv = -1;
+ goto out;
+ }
+ percent_decode(arg, &pkcs11->pin);
+ debug3_f("Setting PIN from PKCS#11 URI");
+ break;
+
+ default:
+ /* Unrecognized attribute in the URI query SHOULD be ignored */
+ verbose_f("Unknown part of query in PKCS#11 URI: %s", tok);
+ }
+ }
+out:
+ free(p);
+ return rv;
+}
+
+#endif /* ENABLE_PKCS11 */
diff -up openssh-8.7p1/ssh-pkcs11-uri.h.pkcs11-uri openssh-8.7p1/ssh-pkcs11-uri.h
--- openssh-8.7p1/ssh-pkcs11-uri.h.pkcs11-uri 2021-08-30 13:07:43.667700130 +0200
+++ openssh-8.7p1/ssh-pkcs11-uri.h 2021-08-30 13:07:43.667700130 +0200
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2017 Red Hat
+ *
+ * Authors: Jakub Jelen <jjelen@redhat.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#define PKCS11_URI_SCHEME "pkcs11:"
+#define PKCS11_URI_WHITELIST "abcdefghijklmnopqrstuvwxyz" \
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZ" \
+ "0123456789_-.()"
+
+struct pkcs11_uri {
+ /* path */
+ char *id;
+ size_t id_len;
+ char *token;
+ char *object;
+ char *lib_manuf;
+ char *manuf;
+ char *serial;
+ /* query */
+ char *module_path;
+ char *pin; /* Only parsed, but not printed */
+};
+
+struct pkcs11_uri *pkcs11_uri_init();
+void pkcs11_uri_cleanup(struct pkcs11_uri *);
+int pkcs11_uri_parse(const char *, struct pkcs11_uri *);
+struct pkcs11_uri *pkcs11_uri_init();
+char *pkcs11_uri_get(struct pkcs11_uri *uri);
+