java-17-openjdk/rh2052829-fips_runtime_nss_detection.patch
Andrew Hughes 554f0c4bb8 Detect NSS at runtime for FIPS detection
Turn off build-time NSS linking and go back to an explicit Requires on NSS

Resolves: rhbz#2052829
2022-02-23 17:53:35 +00:00

214 lines
6.6 KiB
Diff

commit 090ea0389db5c2e0c8ee13652bccd544b17872c2
Author: Andrew Hughes <gnu.andrew@redhat.com>
Date: Mon Feb 7 15:33:27 2022 +0000
RH2051605: Detect NSS at Runtime for FIPS detection
diff --git openjdk.orig/src/java.base/linux/native/libsystemconf/systemconf.c openjdk/src/java.base/linux/native/libsystemconf/systemconf.c
index caf678a7dd6..8dcb7d9073f 100644
--- openjdk.orig/src/java.base/linux/native/libsystemconf/systemconf.c
+++ openjdk/src/java.base/linux/native/libsystemconf/systemconf.c
@@ -23,26 +23,37 @@
* questions.
*/
-#include <dlfcn.h>
#include <jni.h>
#include <jni_util.h>
+#include "jvm_md.h"
#include <stdio.h>
#ifdef SYSCONF_NSS
#include <nss3/pk11pub.h>
+#else
+#include <dlfcn.h>
#endif //SYSCONF_NSS
#include "java_security_SystemConfigurator.h"
-#define MSG_MAX_SIZE 96
+#define MSG_MAX_SIZE 256
+#define FIPS_ENABLED_PATH "/proc/sys/crypto/fips_enabled"
+
+typedef int (SECMOD_GET_SYSTEM_FIPS_ENABLED_TYPE)(void);
+static SECMOD_GET_SYSTEM_FIPS_ENABLED_TYPE *getSystemFIPSEnabled;
static jmethodID debugPrintlnMethodID = NULL;
static jobject debugObj = NULL;
-// Only used when NSS is unavailable and FIPS_ENABLED_PATH is read
-#ifndef SYSCONF_NSS
-
-#define FIPS_ENABLED_PATH "/proc/sys/crypto/fips_enabled"
+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);
+ }
+}
static void throwIOException(JNIEnv *env, const char *msg)
{
@@ -51,18 +62,61 @@ static void throwIOException(JNIEnv *env, const char *msg)
(*env)->ThrowNew(env, cls, msg);
}
-#endif
+static void handle_msg(JNIEnv *env, const char* msg, int msg_bytes)
+{
+ if (msg_bytes > 0 && msg_bytes < MSG_MAX_SIZE) {
+ dbgPrint(env, msg);
+ } else {
+ dbgPrint(env, "systemconf: cannot render message");
+ }
+}
-static void dbgPrint(JNIEnv *env, const char* msg)
+// Only used when NSS is not linked at build time
+#ifndef SYSCONF_NSS
+
+static void *nss_handle;
+
+static jboolean loadNSS(JNIEnv *env)
{
- jstring jMsg;
- if (debugObj != NULL) {
- jMsg = (*env)->NewStringUTF(env, msg);
- CHECK_NULL(jMsg);
- (*env)->CallVoidMethod(env, debugObj, debugPrintlnMethodID, jMsg);
- }
+ char msg[MSG_MAX_SIZE];
+ int msg_bytes;
+ const char* errmsg;
+
+ nss_handle = dlopen(JNI_LIB_NAME("nss3"), RTLD_LAZY);
+ if (nss_handle == NULL) {
+ errmsg = dlerror();
+ msg_bytes = snprintf(msg, MSG_MAX_SIZE, "loadNSS: dlopen: %s\n",
+ errmsg);
+ handle_msg(env, msg, msg_bytes);
+ return JNI_FALSE;
+ }
+ dlerror(); /* Clear errors */
+ getSystemFIPSEnabled = (SECMOD_GET_SYSTEM_FIPS_ENABLED_TYPE*)dlsym(nss_handle, "SECMOD_GetSystemFIPSEnabled");
+ if ((errmsg = dlerror()) != NULL) {
+ msg_bytes = snprintf(msg, MSG_MAX_SIZE, "loadNSS: dlsym: %s\n",
+ errmsg);
+ handle_msg(env, msg, msg_bytes);
+ return JNI_FALSE;
+ }
+ return JNI_TRUE;
+}
+
+static void closeNSS(JNIEnv *env)
+{
+ char msg[MSG_MAX_SIZE];
+ int msg_bytes;
+ const char* errmsg;
+
+ if (dlclose(nss_handle) != 0) {
+ errmsg = dlerror();
+ msg_bytes = snprintf(msg, MSG_MAX_SIZE, "closeNSS: dlclose: %s\n",
+ errmsg);
+ handle_msg(env, msg, msg_bytes);
+ }
}
+#endif
+
/*
* Class: java_security_SystemConfigurator
* Method: JNI_OnLoad
@@ -104,6 +158,14 @@ JNIEXPORT jint JNICALL DEF_JNI_OnLoad(JavaVM *vm, void *reserved)
debugObj = (*env)->NewGlobalRef(env, debugObj);
}
+#ifdef SYSCONF_NSS
+ getSystemFIPSEnabled = *SECMOD_GetSystemFIPSEnabled;
+#else
+ if (loadNSS(env) == JNI_FALSE) {
+ dbgPrint(env, "libsystemconf: Failed to load NSS library.");
+ }
+#endif
+
return (*env)->GetVersion(env);
}
@@ -119,6 +181,9 @@ JNIEXPORT void JNICALL DEF_JNI_OnUnload(JavaVM *vm, void *reserved)
if ((*vm)->GetEnv(vm, (void**) &env, JNI_VERSION_1_2) != JNI_OK) {
return; /* Should not happen */
}
+#ifndef SYSCONF_NSS
+ closeNSS(env);
+#endif
(*env)->DeleteGlobalRef(env, debugObj);
}
}
@@ -130,44 +195,30 @@ JNIEXPORT jboolean JNICALL Java_java_security_SystemConfigurator_getSystemFIPSEn
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);
+ if (getSystemFIPSEnabled != NULL) {
+ dbgPrint(env, "getSystemFIPSEnabled: calling SECMOD_GetSystemFIPSEnabled");
+ fips_enabled = (*getSystemFIPSEnabled)();
+ msg_bytes = snprintf(msg, MSG_MAX_SIZE, "getSystemFIPSEnabled:" \
+ " SECMOD_GetSystemFIPSEnabled returned 0x%x", fips_enabled);
+ handle_msg(env, msg, msg_bytes);
+ return (fips_enabled == 1 ? JNI_TRUE : JNI_FALSE);
} else {
- dbgPrint(env, "getSystemFIPSEnabled: cannot render" \
- " SECMOD_GetSystemFIPSEnabled return value");
- }
- return (fips_enabled == 1 ? JNI_TRUE : JNI_FALSE);
+ FILE *fe;
-#else // SYSCONF_NSS
-
- FILE *fe;
-
- dbgPrint(env, "getSystemFIPSEnabled: reading " FIPS_ENABLED_PATH);
- if ((fe = fopen(FIPS_ENABLED_PATH, "r")) == NULL) {
+ dbgPrint(env, "getSystemFIPSEnabled: reading " FIPS_ENABLED_PATH);
+ if ((fe = fopen(FIPS_ENABLED_PATH, "r")) == NULL) {
throwIOException(env, "Cannot open " FIPS_ENABLED_PATH);
return JNI_FALSE;
- }
- fips_enabled = fgetc(fe);
- fclose(fe);
- if (fips_enabled == EOF) {
+ }
+ fips_enabled = fgetc(fe);
+ fclose(fe);
+ if (fips_enabled == EOF) {
throwIOException(env, "Cannot read " FIPS_ENABLED_PATH);
return JNI_FALSE;
+ }
+ msg_bytes = snprintf(msg, MSG_MAX_SIZE, "getSystemFIPSEnabled:" \
+ " read character is '%c'", fips_enabled);
+ handle_msg(env, msg, msg_bytes);
+ return (fips_enabled == '1' ? JNI_TRUE : JNI_FALSE);
}
- 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
}