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java-21-openjdk-portable/rh1929465-improve_system_FIPS_detection.patch
Andrew John Hughes 619b0b263e Detect FIPS using SECMOD_GetSystemFIPSEnabled in the new libsystemconf JDK library. 
Minor code cleanups on FIPS detection patch and check for SECMOD_GetSystemFIPSEnabled in configure.
Remove unneeded Requires on NSS as it will now be dynamically linked and detected by RPM.
2021-09-08 04:41:40 +01:00

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diff --git openjdk/make/autoconf/lib-sysconf.m4 openjdk/make/autoconf/lib-sysconf.m4
new file mode 100644
index 00000000000..b2b1c1787da
--- /dev/null
+++ openjdk/make/autoconf/lib-sysconf.m4
@@ -0,0 +1,84 @@
+#
+# Copyright (c) 2021, Red Hat, Inc.
+# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+#
+# This code is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License version 2 only, as
+# published by the Free Software Foundation. Oracle designates this
+# particular file as subject to the "Classpath" exception as provided
+# by Oracle in the LICENSE file that accompanied this code.
+#
+# This code is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+# version 2 for more details (a copy is included in the LICENSE file that
+# accompanied this code).
+#
+# You should have received a copy of the GNU General Public License version
+# 2 along with this work; if not, write to the Free Software Foundation,
+# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+# or visit www.oracle.com if you need additional information or have any
+# questions.
+#
+
+################################################################################
+# Setup system configuration libraries
+################################################################################
+AC_DEFUN_ONCE([LIB_SETUP_SYSCONF_LIBS],
+[
+ ###############################################################################
+ #
+ # Check for the NSS library
+ #
+
+ AC_MSG_CHECKING([whether to use the system NSS library with the System Configurator (libsysconf)])
+
+ # default is not available
+ DEFAULT_SYSCONF_NSS=no
+
+ AC_ARG_ENABLE([sysconf-nss], [AS_HELP_STRING([--enable-sysconf-nss],
+ [build the System Configurator (libsysconf) using the system NSS library if available @<:@disabled@:>@])],
+ [
+ case "${enableval}" in
+ yes)
+ sysconf_nss=yes
+ ;;
+ *)
+ sysconf_nss=no
+ ;;
+ esac
+ ],
+ [
+ sysconf_nss=${DEFAULT_SYSCONF_NSS}
+ ])
+ AC_MSG_RESULT([$sysconf_nss])
+
+ USE_SYSCONF_NSS=false
+ if test "x${sysconf_nss}" = "xyes"; then
+ PKG_CHECK_MODULES(NSS, nss >= 3.53, [NSS_FOUND=yes], [NSS_FOUND=no])
+ if test "x${NSS_FOUND}" = "xyes"; then
+ AC_MSG_CHECKING([for system FIPS support in NSS])
+ saved_libs="${LIBS}"
+ saved_cflags="${CFLAGS}"
+ CFLAGS="${CFLAGS} ${NSS_CFLAGS}"
+ LIBS="${LIBS} ${NSS_LIBS}"
+ AC_LANG_PUSH([C])
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <nss3/pk11pub.h>]],
+ [[SECMOD_GetSystemFIPSEnabled()]])],
+ [AC_MSG_RESULT([yes])],
+ [AC_MSG_RESULT([no])
+ AC_MSG_ERROR([System NSS FIPS detection unavailable])])
+ AC_LANG_POP([C])
+ CFLAGS="${saved_cflags}"
+ LIBS="${saved_libs}"
+ USE_SYSCONF_NSS=true
+ else
+ dnl NSS 3.53 is the one that introduces the SECMOD_GetSystemFIPSEnabled API
+ dnl in nss3/pk11pub.h.
+ AC_MSG_ERROR([--enable-sysconf-nss specified, but NSS 3.53 or above not found.])
+ fi
+ fi
+ AC_SUBST(USE_SYSCONF_NSS)
+])
diff --git openjdk/make/autoconf/libraries.m4 openjdk/make/autoconf/libraries.m4
index a65d91ee974..a8f054c1397 100644
--- openjdk/make/autoconf/libraries.m4
+++ openjdk/make/autoconf/libraries.m4
@@ -33,6 +33,7 @@ m4_include([lib-std.m4])
m4_include([lib-x11.m4])
m4_include([lib-fontconfig.m4])
m4_include([lib-tests.m4])
+m4_include([lib-sysconf.m4])
################################################################################
# Determine which libraries are needed for this configuration
@@ -104,6 +105,7 @@ AC_DEFUN_ONCE([LIB_SETUP_LIBRARIES],
LIB_SETUP_BUNDLED_LIBS
LIB_SETUP_MISC_LIBS
LIB_TESTS_SETUP_GTEST
+ LIB_SETUP_SYSCONF_LIBS
BASIC_JDKLIB_LIBS=""
if test "x$TOOLCHAIN_TYPE" != xmicrosoft; then
diff --git openjdk/make/autoconf/spec.gmk.in openjdk/make/autoconf/spec.gmk.in
index 29445c8c24f..9b1b512a34a 100644
--- openjdk/make/autoconf/spec.gmk.in
+++ openjdk/make/autoconf/spec.gmk.in
@@ -834,6 +834,10 @@ INSTALL_SYSCONFDIR=@sysconfdir@
# Libraries
#
+USE_SYSCONF_NSS:=@USE_SYSCONF_NSS@
+NSS_LIBS:=@NSS_LIBS@
+NSS_CFLAGS:=@NSS_CFLAGS@
+
USE_EXTERNAL_LCMS:=@USE_EXTERNAL_LCMS@
LCMS_CFLAGS:=@LCMS_CFLAGS@
LCMS_LIBS:=@LCMS_LIBS@
diff --git openjdk/make/modules/java.base/Lib.gmk openjdk/make/modules/java.base/Lib.gmk
index 5658ff342e5..cb7a56852f7 100644
--- openjdk/make/modules/java.base/Lib.gmk
+++ openjdk/make/modules/java.base/Lib.gmk
@@ -167,6 +167,31 @@ ifeq ($(call isTargetOsType, unix), true)
endif
endif
+################################################################################
+# Create the systemconf library
+
+LIBSYSTEMCONF_CFLAGS :=
+LIBSYSTEMCONF_CXXFLAGS :=
+
+ifeq ($(USE_SYSCONF_NSS), true)
+ LIBSYSTEMCONF_CFLAGS += $(NSS_CFLAGS) -DSYSCONF_NSS
+ LIBSYSTEMCONF_CXXFLAGS += $(NSS_CFLAGS) -DSYSCONF_NSS
+endif
+
+ifeq ($(OPENJDK_BUILD_OS), linux)
+ $(eval $(call SetupJdkLibrary, BUILD_LIBSYSTEMCONF, \
+ NAME := systemconf, \
+ OPTIMIZATION := LOW, \
+ CFLAGS := $(CFLAGS_JDKLIB) $(LIBSYSTEMCONF_CFLAGS), \
+ CXXFLAGS := $(CXXFLAGS_JDKLIB) $(LIBSYSTEMCONF_CXXFLAGS), \
+ LDFLAGS := $(LDFLAGS_JDKLIB) \
+ $(call SET_SHARED_LIBRARY_ORIGIN), \
+ LIBS_unix := $(LIBDL) $(NSS_LIBS), \
+ ))
+
+ TARGETS += $(BUILD_LIBSYSTEMCONF)
+endif
+
################################################################################
# Create the symbols file for static builds.
diff --git openjdk/src/java.base/linux/native/libsystemconf/systemconf.c openjdk/src/java.base/linux/native/libsystemconf/systemconf.c
new file mode 100644
index 00000000000..6f4656bfcb6
--- /dev/null
+++ openjdk/src/java.base/linux/native/libsystemconf/systemconf.c
@@ -0,0 +1,168 @@
+/*
+ * Copyright (c) 2021, Red Hat, Inc.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+#include <dlfcn.h>
+#include <jni.h>
+#include <jni_util.h>
+#include <stdio.h>
+
+#ifdef SYSCONF_NSS
+#include <nss3/pk11pub.h>
+#endif //SYSCONF_NSS
+
+#include "java_security_SystemConfigurator.h"
+
+#define FIPS_ENABLED_PATH "/proc/sys/crypto/fips_enabled"
+#define MSG_MAX_SIZE 96
+
+static jmethodID debugPrintlnMethodID = NULL;
+static jobject debugObj = NULL;
+
+static void throwIOException(JNIEnv *env, const char *msg);
+static void dbgPrint(JNIEnv *env, const char* msg);
+
+/*
+ * Class: java_security_SystemConfigurator
+ * Method: JNI_OnLoad
+ */
+JNIEXPORT jint JNICALL DEF_JNI_OnLoad(JavaVM *vm, void *reserved)
+{
+ JNIEnv *env;
+ jclass sysConfCls, debugCls;
+ jfieldID sdebugFld;
+
+ if ((*vm)->GetEnv(vm, (void**) &env, JNI_VERSION_1_2) != JNI_OK) {
+ return JNI_EVERSION; /* JNI version not supported */
+ }
+
+ sysConfCls = (*env)->FindClass(env,"java/security/SystemConfigurator");
+ if (sysConfCls == NULL) {
+ printf("libsystemconf: SystemConfigurator class not found\n");
+ return JNI_ERR;
+ }
+ sdebugFld = (*env)->GetStaticFieldID(env, sysConfCls,
+ "sdebug", "Lsun/security/util/Debug;");
+ if (sdebugFld == NULL) {
+ printf("libsystemconf: SystemConfigurator::sdebug field not found\n");
+ return JNI_ERR;
+ }
+ debugObj = (*env)->GetStaticObjectField(env, sysConfCls, sdebugFld);
+ if (debugObj != NULL) {
+ debugCls = (*env)->FindClass(env,"sun/security/util/Debug");
+ if (debugCls == NULL) {
+ printf("libsystemconf: Debug class not found\n");
+ return JNI_ERR;
+ }
+ debugPrintlnMethodID = (*env)->GetMethodID(env, debugCls,
+ "println", "(Ljava/lang/String;)V");
+ if (debugPrintlnMethodID == NULL) {
+ printf("libsystemconf: Debug::println(String) method not found\n");
+ return JNI_ERR;
+ }
+ debugObj = (*env)->NewGlobalRef(env, debugObj);
+ }
+
+ return (*env)->GetVersion(env);
+}
+
+/*
+ * Class: java_security_SystemConfigurator
+ * Method: JNI_OnUnload
+ */
+JNIEXPORT void JNICALL DEF_JNI_OnUnload(JavaVM *vm, void *reserved)
+{
+ JNIEnv *env;
+
+ if (debugObj != NULL) {
+ if ((*vm)->GetEnv(vm, (void**) &env, JNI_VERSION_1_2) != JNI_OK) {
+ return; /* Should not happen */
+ }
+ (*env)->DeleteGlobalRef(env, debugObj);
+ }
+}
+
+JNIEXPORT jboolean JNICALL Java_java_security_SystemConfigurator_getSystemFIPSEnabled
+ (JNIEnv *env, jclass cls)
+{
+ int fips_enabled;
+ char msg[MSG_MAX_SIZE];
+ int msg_bytes;
+
+#ifdef SYSCONF_NSS
+
+ dbgPrint(env, "getSystemFIPSEnabled: calling SECMOD_GetSystemFIPSEnabled");
+ fips_enabled = SECMOD_GetSystemFIPSEnabled();
+ msg_bytes = snprintf(msg, MSG_MAX_SIZE, "getSystemFIPSEnabled:" \
+ " SECMOD_GetSystemFIPSEnabled returned 0x%x", fips_enabled);
+ if (msg_bytes > 0 && msg_bytes < MSG_MAX_SIZE) {
+ dbgPrint(env, msg);
+ } else {
+ dbgPrint(env, "getSystemFIPSEnabled: cannot render" \
+ " SECMOD_GetSystemFIPSEnabled return value");
+ }
+ return (fips_enabled == 1 ? JNI_TRUE : JNI_FALSE);
+
+#else // SYSCONF_NSS
+
+ FILE *fe;
+
+ dbgPrint(env, "getSystemFIPSEnabled: reading " FIPS_ENABLED_PATH);
+ if ((fe = fopen(FIPS_ENABLED_PATH, "r")) == NULL) {
+ throwIOException(env, "Cannot open " FIPS_ENABLED_PATH);
+ }
+ fips_enabled = fgetc(fe);
+ fclose(fe);
+ if (fips_enabled == EOF) {
+ throwIOException(env, "Cannot read " FIPS_ENABLED_PATH);
+ }
+ msg_bytes = snprintf(msg, MSG_MAX_SIZE, "getSystemFIPSEnabled:" \
+ " read character is '%c'", fips_enabled);
+ if (msg_bytes > 0 && msg_bytes < MSG_MAX_SIZE) {
+ dbgPrint(env, msg);
+ } else {
+ dbgPrint(env, "getSystemFIPSEnabled: cannot render" \
+ " read character");
+ }
+ return (fips_enabled == '1' ? JNI_TRUE : JNI_FALSE);
+
+#endif // SYSCONF_NSS
+}
+
+static void throwIOException(JNIEnv *env, const char *msg)
+{
+ jclass cls = (*env)->FindClass(env, "java/io/IOException");
+ if (cls != 0)
+ (*env)->ThrowNew(env, cls, msg);
+}
+
+static void dbgPrint(JNIEnv *env, const char* msg)
+{
+ jstring jMsg;
+ if (debugObj != NULL) {
+ jMsg = (*env)->NewStringUTF(env, msg);
+ CHECK_NULL(jMsg);
+ (*env)->CallVoidMethod(env, debugObj, debugPrintlnMethodID, jMsg);
+ }
+}
diff --git openjdk/src/java.base/share/classes/java/security/SystemConfigurator.java openjdk/src/java.base/share/classes/java/security/SystemConfigurator.java
index 10b54aa4ce4..6aa1419dfd0 100644
--- openjdk/src/java.base/share/classes/java/security/SystemConfigurator.java
+++ openjdk/src/java.base/share/classes/java/security/SystemConfigurator.java
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2019, 2020, Red Hat, Inc.
+ * Copyright (c) 2019, 2021, Red Hat, Inc.
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
@@ -30,13 +30,9 @@ import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.IOException;
-import java.nio.file.Files;
-import java.nio.file.Path;
-
import java.util.Iterator;
import java.util.Map.Entry;
import java.util.Properties;
-import java.util.regex.Pattern;
import sun.security.util.Debug;
@@ -58,11 +54,23 @@ final class SystemConfigurator {
private static final String CRYPTO_POLICIES_JAVA_CONFIG =
CRYPTO_POLICIES_BASE_DIR + "/back-ends/java.config";
- private static final String CRYPTO_POLICIES_CONFIG =
- CRYPTO_POLICIES_BASE_DIR + "/config";
-
private static boolean systemFipsEnabled = false;
+ private static final String SYSTEMCONF_NATIVE_LIB = "systemconf";
+
+ private static native boolean getSystemFIPSEnabled()
+ throws IOException;
+
+ static {
+ @SuppressWarnings("removal")
+ var dummy = AccessController.doPrivileged(new PrivilegedAction<Void>() {
+ public Void run() {
+ System.loadLibrary(SYSTEMCONF_NATIVE_LIB);
+ return null;
+ }
+ });
+ }
+
/*
* Invoked when java.security.Security class is initialized, if
* java.security.disableSystemPropertiesFile property is not set and
@@ -170,16 +178,34 @@ final class SystemConfigurator {
}
/*
- * FIPS is enabled only if crypto-policies are set to "FIPS"
- * and the com.redhat.fips property is true.
+ * OpenJDK FIPS mode will be enabled only if the com.redhat.fips
+ * system property is true (default) and the system is in FIPS mode.
+ *
+ * There are 2 possible ways in which OpenJDK detects that the system
+ * is in FIPS mode: 1) if the NSS SECMOD_GetSystemFIPSEnabled API is
+ * available at OpenJDK's built-time, it is called; 2) otherwise, the
+ * /proc/sys/crypto/fips_enabled file is read.
*/
private static boolean enableFips() throws Exception {
boolean shouldEnable = Boolean.valueOf(System.getProperty("com.redhat.fips", "true"));
if (shouldEnable) {
- String cryptoPoliciesConfig = new String(Files.readAllBytes(Path.of(CRYPTO_POLICIES_CONFIG)));
- if (sdebug != null) { sdebug.println("Crypto config:\n" + cryptoPoliciesConfig); }
- Pattern pattern = Pattern.compile("^FIPS$", Pattern.MULTILINE);
- return pattern.matcher(cryptoPoliciesConfig).find();
+ if (sdebug != null) {
+ sdebug.println("Calling getSystemFIPSEnabled (libsystemconf)...");
+ }
+ try {
+ shouldEnable = getSystemFIPSEnabled();
+ if (sdebug != null) {
+ sdebug.println("Call to getSystemFIPSEnabled (libsystemconf) returned: "
+ + shouldEnable);
+ }
+ return shouldEnable;
+ } catch (IOException e) {
+ if (sdebug != null) {
+ sdebug.println("Call to getSystemFIPSEnabled (libsystemconf) failed:");
+ sdebug.println(e.getMessage());
+ }
+ throw e;
+ }
} else {
return false;
}
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