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From 59daac692a796fac4f241ec0ef358fd023b671ef Mon Sep 17 00:00:00 2001
From: modric <wangyu283@huawei.com>
Date: Fri, 14 Jan 2022 11:46:20 +0800
Subject: [PATCH] add sm3 crypt support
---
modules/pam_unix/pam_unix.8 | 9 +-
modules/pam_unix/pam_unix.8.xml | 16 +++-
modules/pam_unix/passverify.c | 5 +-
modules/pam_unix/support.c | 4 +-
modules/pam_unix/support.h | 6 +-
xtests/Makefile.am | 6 +-
xtests/tst-pam_unix5.c | 151 ++++++++++++++++++++++++++++++++
xtests/tst-pam_unix5.pamd | 5 ++
xtests/tst-pam_unix5.sh | 41 +++++++++
9 files changed, 233 insertions(+), 10 deletions(-)
create mode 100644 xtests/tst-pam_unix5.c
create mode 100644 xtests/tst-pam_unix5.pamd
create mode 100644 xtests/tst-pam_unix5.sh
diff --git a/modules/pam_unix/pam_unix.8 b/modules/pam_unix/pam_unix.8
index 438717f..6f31c10 100644
--- a/modules/pam_unix/pam_unix.8
+++ b/modules/pam_unix/pam_unix.8
@@ -201,9 +201,16 @@ When a user changes their password next, encrypt it with the yescrypt algorithm\
function\&.
.RE
.PP
+sm3
+.RS 4
+When a user changes their password next, encrypt it with the SM3 algorithm\&. The SM3 algorithm must be supported by the
+\fBcrypt\fR(3)
+function\&.
+.RE
+.PP
rounds=n
.RS 4
-Set the optional number of rounds of the SHA256, SHA512, blowfish, gost\-yescrypt, and yescrypt password hashing algorithms to
+Set the optional number of rounds of the SHA256, SHA512, blowfish, gost\-yescrypt, yescrypt and SM3 password hashing algorithms to
\fIn\fR\&.
.RE
.PP
diff --git a/modules/pam_unix/pam_unix.8.xml b/modules/pam_unix/pam_unix.8.xml
index dfc0427..7d61869 100644
--- a/modules/pam_unix/pam_unix.8.xml
+++ b/modules/pam_unix/pam_unix.8.xml
@@ -366,6 +366,20 @@
</para>
</listitem>
</varlistentry>
+ <varlistentry>
+ <term>
+ sm3
+ </term>
+ <listitem>
+ <para>
+ When a user changes their password next,
+ encrypt it with the SM3 algorithm. The
+ SM3 algorithm must be supported by the <citerefentry>
+ <refentrytitle>crypt</refentrytitle><manvolnum>3</manvolnum>
+ </citerefentry> function.
+ </para>
+ </listitem>
+ </varlistentry>
<varlistentry>
<term>
rounds=n
@@ -373,7 +387,7 @@
<listitem>
<para>
Set the optional number of rounds of the SHA256, SHA512,
- blowfish, gost-yescrypt, and yescrypt password hashing
+ blowfish, gost-yescrypt, yescrypt and SM3 password hashing
algorithms to
<replaceable>n</replaceable>.
</para>
diff --git a/modules/pam_unix/passverify.c b/modules/pam_unix/passverify.c
index 81b10d8..1aee153 100644
--- a/modules/pam_unix/passverify.c
+++ b/modules/pam_unix/passverify.c
@@ -445,6 +445,8 @@ PAMH_ARG_DECL(char * create_password_hash,
algoid = "$5$";
} else if (on(UNIX_SHA512_PASS, ctrl)) {
algoid = "$6$";
+ } else if (on(UNIX_SM3_PASS, ctrl)) {
+ algoid = "$sm3$";
} else { /* must be crypt/bigcrypt */
char tmppass[9];
char *hashed;
@@ -492,7 +494,8 @@ PAMH_ARG_DECL(char * create_password_hash,
on(UNIX_GOST_YESCRYPT_PASS, ctrl) ? "gost_yescrypt" :
on(UNIX_BLOWFISH_PASS, ctrl) ? "blowfish" :
on(UNIX_SHA256_PASS, ctrl) ? "sha256" :
- on(UNIX_SHA512_PASS, ctrl) ? "sha512" : algoid);
+ on(UNIX_SHA512_PASS, ctrl) ? "sha512" :
+ on(UNIX_SM3_PASS, ctrl) ? "sm3" : algoid);
if(sp) {
pam_overwrite_string(sp);
}
diff --git a/modules/pam_unix/support.c b/modules/pam_unix/support.c
index 043273d..4052868 100644
--- a/modules/pam_unix/support.c
+++ b/modules/pam_unix/support.c
@@ -99,7 +99,7 @@ unsigned long long _set_ctrl(pam_handle_t *pamh, int flags, int *remember,
free (val);
/* read number of rounds for crypt algo */
- if (rounds && (on(UNIX_SHA256_PASS, ctrl) || on(UNIX_SHA512_PASS, ctrl))) {
+ if (rounds && (on(UNIX_SHA256_PASS, ctrl) || on(UNIX_SHA512_PASS, ctrl) || on(UNIX_SM3_PASS, ctrl))) {
val = pam_modutil_search_key(pamh, LOGIN_DEFS, "SHA_CRYPT_MAX_ROUNDS");
if (val) {
@@ -194,7 +194,7 @@ unsigned long long _set_ctrl(pam_handle_t *pamh, int flags, int *remember,
} else if (on(UNIX_BLOWFISH_PASS, ctrl)) {
if (*rounds < 4 || *rounds > 31)
*rounds = 5;
- } else if (on(UNIX_SHA256_PASS, ctrl) || on(UNIX_SHA512_PASS, ctrl)) {
+ } else if (on(UNIX_SHA256_PASS, ctrl) || on(UNIX_SHA512_PASS, ctrl) || on(UNIX_SM3_PASS, ctrl)) {
if ((*rounds < 1000) || (*rounds == INT_MAX)) {
/* don't care about bogus values */
*rounds = 0;
diff --git a/modules/pam_unix/support.h b/modules/pam_unix/support.h
index 8105400..b5712b5 100644
--- a/modules/pam_unix/support.h
+++ b/modules/pam_unix/support.h
@@ -101,10 +101,11 @@ typedef struct {
#define UNIX_GOST_YESCRYPT_PASS 31 /* new password hashes will use gost-yescrypt */
#define UNIX_YESCRYPT_PASS 32 /* new password hashes will use yescrypt */
#define UNIX_NULLRESETOK 33 /* allow empty password if password reset is enforced */
+#define UNIX_SM3_PASS 34 /* new password hashes will use SM3 */
/* -------------- */
-#define UNIX_CTRLS_ 34 /* number of ctrl arguments defined */
+#define UNIX_CTRLS_ 35 /* number of ctrl arguments defined */
-#define UNIX_DES_CRYPT(ctrl) (off(UNIX_MD5_PASS,ctrl)&&off(UNIX_BIGCRYPT,ctrl)&&off(UNIX_SHA256_PASS,ctrl)&&off(UNIX_SHA512_PASS,ctrl)&&off(UNIX_BLOWFISH_PASS,ctrl)&&off(UNIX_GOST_YESCRYPT_PASS,ctrl)&&off(UNIX_YESCRYPT_PASS,ctrl))
+#define UNIX_DES_CRYPT(ctrl) (off(UNIX_MD5_PASS,ctrl)&&off(UNIX_BIGCRYPT,ctrl)&&off(UNIX_SHA256_PASS,ctrl)&&off(UNIX_SHA512_PASS,ctrl)&&off(UNIX_BLOWFISH_PASS,ctrl)&&off(UNIX_GOST_YESCRYPT_PASS,ctrl)&&off(UNIX_YESCRYPT_PASS,ctrl)&&off(UNIX_SM3_PASS,ctrl))
static const UNIX_Ctrls unix_args[UNIX_CTRLS_] =
{
@@ -145,6 +146,7 @@ static const UNIX_Ctrls unix_args[UNIX_CTRLS_] =
/* UNIX_GOST_YESCRYPT_PASS */ {"gost_yescrypt", _ALL_ON_^(015660420000ULL), 04000000000, 1},
/* UNIX_YESCRYPT_PASS */ {"yescrypt", _ALL_ON_^(015660420000ULL), 010000000000, 1},
/* UNIX_NULLRESETOK */ {"nullresetok", _ALL_ON_, 020000000000, 0},
+/* UNIX_SM3_PASS */ {"sm3", _ALL_ON_^(015660420000ULL), 040000000000, 1},
};
#define UNIX_DEFAULTS (unix_args[UNIX__NONULL].flag)
diff --git a/xtests/Makefile.am b/xtests/Makefile.am
index acf9746..33693de 100644
--- a/xtests/Makefile.am
+++ b/xtests/Makefile.am
@@ -14,9 +14,9 @@ EXTRA_DIST = run-xtests.sh tst-pam_dispatch1.pamd tst-pam_dispatch2.pamd \
tst-pam_dispatch3.pamd tst-pam_dispatch4.pamd \
tst-pam_dispatch5.pamd \
tst-pam_unix1.pamd tst-pam_unix2.pamd tst-pam_unix3.pamd \
- tst-pam_unix4.pamd \
+ tst-pam_unix4.pamd tst-pam_unix5.pamd \
tst-pam_unix1.sh tst-pam_unix2.sh tst-pam_unix3.sh \
- tst-pam_unix4.sh \
+ tst-pam_unix4.sh tst-pam_unix5.sh \
access.conf tst-pam_access1.pamd tst-pam_access1.sh \
tst-pam_access2.pamd tst-pam_access2.sh \
tst-pam_access3.pamd tst-pam_access3.sh \
@@ -40,7 +40,7 @@ EXTRA_DIST = run-xtests.sh tst-pam_dispatch1.pamd tst-pam_dispatch2.pamd \
XTESTS = tst-pam_dispatch1 tst-pam_dispatch2 tst-pam_dispatch3 \
tst-pam_dispatch4 tst-pam_dispatch5 \
- tst-pam_unix1 tst-pam_unix2 tst-pam_unix3 tst-pam_unix4 \
+ tst-pam_unix1 tst-pam_unix2 tst-pam_unix3 tst-pam_unix4 tst-pam_unix5 \
tst-pam_access1 tst-pam_access2 tst-pam_access3 \
tst-pam_access4 tst-pam_limits1 tst-pam_succeed_if1 \
tst-pam_group1 tst-pam_authfail tst-pam_authsucceed \
diff --git a/xtests/tst-pam_unix5.c b/xtests/tst-pam_unix5.c
new file mode 100644
index 0000000..6e6e378
--- /dev/null
+++ b/xtests/tst-pam_unix5.c
@@ -0,0 +1,151 @@
+/*
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, and the entire permission notice in its entirety,
+ * including the disclaimer of warranties.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote
+ * products derived from this software without specific prior
+ * written permission.
+ *
+ * ALTERNATIVELY, this product may be distributed under the terms of
+ * the GNU Public License, in which case the provisions of the GPL are
+ * required INSTEAD OF the above restrictions. (This clause is
+ * necessary due to a potential bad interaction between the GPL and
+ * the restrictions contained in a BSD-style copyright.)
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * Check password authtok.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <security/pam_appl.h>
+#include <sys/types.h>
+#include <pwd.h>
+#include <unistd.h>
+
+/* A conversation function which uses an internally-stored value for
+ the responses. */
+static int
+fake_conv (int num_msg, const struct pam_message **msgm,
+ struct pam_response **response, void *appdata_ptr)
+{
+ struct pam_response *reply;
+ int count;
+
+ /* Sanity test. */
+ if (num_msg <= 0)
+ return PAM_CONV_ERR;
+
+ /* Allocate memory for the responses. */
+ reply = calloc (num_msg, sizeof (struct pam_response));
+ if (reply == NULL)
+ return PAM_CONV_ERR;
+
+ /* Each prompt elicits the same response */
+ for (count = 0; count < num_msg; ++count)
+ {
+ if (msgm[count]->msg_style == PAM_PROMPT_ECHO_OFF)
+ {
+ reply[count].resp_retcode = 0;
+ reply[count].resp = strdup(appdata_ptr);
+ } else {
+ reply[count].resp_retcode = 0;
+ reply[count].resp = strdup("");
+ }
+ }
+
+ /* Set the pointers in the response structure and return. */
+ *response = reply;
+ return PAM_SUCCESS;
+}
+
+static struct pam_conv conv = {
+ fake_conv,
+ NULL
+};
+
+
+/* Check that errors of optional modules are ignored and that
+ required modules after a sufficient one are not executed. */
+
+int
+main(int argc, char *argv[])
+{
+ pam_handle_t *pamh=NULL;
+ const char *user="tstpamunix";
+ int retval;
+ int debug = 0;
+ int fail;
+ struct passwd *pwd;
+
+ if (argc < 2 || (*argv[1] != 'f' &&
+ *argv[1] != 'p'))
+ {
+ fprintf (stderr, "Need fail or pass argument.\n");
+ return 2;
+ }
+
+ fail = *argv[1] == 'f';
+
+ if (argc > 2 && strcmp (argv[2], "-d") == 0)
+ debug = 1;
+
+ pwd = getpwnam (user);
+
+ if (pwd == NULL)
+ {
+ if (debug)
+ fprintf (stderr, "unix5: Missing tstpamunix user.\n");
+ return 2;
+ }
+
+ conv.appdata_ptr = "zhangsan@123";
+ retval = pam_start("tst-pam_unix5", user, &conv, &pamh);
+ if (retval != PAM_SUCCESS)
+ {
+ if (debug)
+ fprintf (stderr, "unix5: pam_start returned %d\n", retval);
+ return 1;
+ }
+
+ retval = pam_chauthtok (pamh, PAM_SILENT);
+ if ((!fail && retval != PAM_SUCCESS) || (fail && retval == PAM_SUCCESS))
+ {
+ if (debug)
+ fprintf (stderr, "unix5-1: pam_chauthtok returned %d\n", retval);
+ return 1;
+ }
+
+ retval = pam_end (pamh,retval);
+ if (retval != PAM_SUCCESS)
+ {
+ if (debug)
+ fprintf (stderr, "unix5: pam_end returned %d\n", retval);
+ return 1;
+ }
+ return 0;
+}
diff --git a/xtests/tst-pam_unix5.pamd b/xtests/tst-pam_unix5.pamd
new file mode 100644
index 0000000..4c77a6c
--- /dev/null
+++ b/xtests/tst-pam_unix5.pamd
@@ -0,0 +1,5 @@
+#%PAM-1.0
+auth required pam_unix.so
+account required pam_unix.so
+password required pam_unix.so sm3
+session required pam_unix.so
diff --git a/xtests/tst-pam_unix5.sh b/xtests/tst-pam_unix5.sh
new file mode 100644
index 0000000..a6be19b
--- /dev/null
+++ b/xtests/tst-pam_unix5.sh
@@ -0,0 +1,41 @@
+#!/bin/sh
+
+# testcase1 modify password, desire password encrypt with sm3
+/usr/sbin/useradd -p tstpamunix
+# this run must successfully change the password
+./tst-pam_unix5 pass
+RET=$?
+# verify tstpamunix hash algo
+if test -z "$(nl /etc/shadow | sed -n '/tstpamunix:$sm3/p')"; then
+ /usr/sbin/userdel -r tstpamunix 2> /dev/null
+ exit 1
+fi
+# testcase2 config valid rounds, desire password encrypt with sm3 and rounds
+sed -i 's/password.*/& rounds=6666/g' /etc/pam.d/tst-pam_unix5
+./tst-pam_unix5 pass
+RET=$?
+if test -z "$(nl /etc/shadow | sed -n '/tstpamunix:$sm3$rounds=6666/p')"; then
+ /usr/sbin/userdel -r tstpamunix 2> /dev/null
+ exit 1
+fi
+
+# testcase3 config rounds=999, desire password encrypt with sm3, but without rounds
+sed -i 's/rounds=6666/rounds=999/g' /etc/pam.d/tst-pam_unix5
+./tst-pam_unix5 pass
+RET=$?
+if test -z "$(nl /etc/shadow | sed -n '/tstpamunix:$sm3/p')"; then
+ /usr/sbin/userdel -r tstpamunix 2> /dev/null
+ exit 1
+fi
+
+# testcase4 config rounds=10000000, desire password encrypt with sm3, but with rounds=9999999
+sed -i 's/rounds=999/rounds=10000000/g' /etc/pam.d/tst-pam_unix5
+./tst-pam_unix5 pass
+RET=$?
+if test -z "$(nl /etc/shadow | sed -n '/tstpamunix:$sm3$rounds=9999999/p')"; then
+ /usr/sbin/userdel -r tstpamunix 2> /dev/null
+ exit 1
+fi
+
+/usr/sbin/userdel -r tstpamunix 2> /dev/null
+exit $RET
--
2.33.0
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