--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/native/java/net/net_util.c Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,240 @@
+/*
+ * Copyright 1998-2005 Sun Microsystems, Inc. All Rights Reserved.
+ * 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. Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+#include "jni.h"
+#include "jvm.h"
+#include "jni_util.h"
+#include "net_util.h"
+
+int IPv6_supported() ;
+
+static int IPv6_available;
+
+JNIEXPORT jint JNICALL ipv6_available()
+{
+ return IPv6_available ;
+}
+
+JNIEXPORT jint JNICALL
+JNI_OnLoad(JavaVM *vm, void *reserved)
+{
+ JNIEnv *env;
+ jclass iCls;
+ jmethodID mid;
+ jstring s;
+ jint preferIPv4Stack;
+
+ if ((*vm)->GetEnv(vm, (void **)&env, JNI_VERSION_1_2) == JNI_OK) {
+ if (JVM_InitializeSocketLibrary() < 0) {
+ JNU_ThrowByName(env, "java/lang/UnsatisfiedLinkError",
+ "failed to initialize net library.");
+ return JNI_VERSION_1_2;
+ }
+ }
+ iCls = (*env)->FindClass(env, "java/lang/Boolean");
+ CHECK_NULL_RETURN(iCls, JNI_VERSION_1_2);
+ mid = (*env)->GetStaticMethodID(env, iCls, "getBoolean", "(Ljava/lang/String;)Z");
+ CHECK_NULL_RETURN(mid, JNI_VERSION_1_2);
+ s = (*env)->NewStringUTF(env, "java.net.preferIPv4Stack");
+ CHECK_NULL_RETURN(s, JNI_VERSION_1_2);
+ preferIPv4Stack = (*env)->CallStaticBooleanMethod(env, iCls, mid, s);
+
+ /*
+ Since we have initialized and loaded the Socket library we will
+ check now to whether we have IPv6 on this platform and if the
+ supporting socket APIs are available
+ */
+ IPv6_available = IPv6_supported() & (!preferIPv4Stack);
+ initLocalAddrTable ();
+ return JNI_VERSION_1_2;
+}
+
+static int initialized = 0;
+
+void init(JNIEnv *env) {
+ if (!initialized) {
+ Java_java_net_InetAddress_init(env, 0);
+ Java_java_net_Inet4Address_init(env, 0);
+ Java_java_net_Inet6Address_init(env, 0);
+ initialized = 1;
+ }
+}
+
+jobject
+NET_SockaddrToInetAddress(JNIEnv *env, struct sockaddr *him, int *port) {
+ jobject iaObj;
+ init(env);
+#ifdef AF_INET6
+ if (him->sa_family == AF_INET6) {
+ jbyteArray ipaddress;
+#ifdef WIN32
+ struct SOCKADDR_IN6 *him6 = (struct SOCKADDR_IN6 *)him;
+#else
+ struct sockaddr_in6 *him6 = (struct sockaddr_in6 *)him;
+#endif
+ jbyte *caddr = (jbyte *)&(him6->sin6_addr);
+ if (NET_IsIPv4Mapped(caddr)) {
+ int address;
+ static jclass inet4Cls = 0;
+ if (inet4Cls == 0) {
+ jclass c = (*env)->FindClass(env, "java/net/Inet4Address");
+ CHECK_NULL_RETURN(c, NULL);
+ inet4Cls = (*env)->NewGlobalRef(env, c);
+ CHECK_NULL_RETURN(inet4Cls, NULL);
+ (*env)->DeleteLocalRef(env, c);
+ }
+ iaObj = (*env)->NewObject(env, inet4Cls, ia4_ctrID);
+ CHECK_NULL_RETURN(iaObj, NULL);
+ address = NET_IPv4MappedToIPv4(caddr);
+ (*env)->SetIntField(env, iaObj, ia_addressID, address);
+ (*env)->SetIntField(env, iaObj, ia_familyID, IPv4);
+ } else {
+ static jclass inet6Cls = 0;
+ if (inet6Cls == 0) {
+ jclass c = (*env)->FindClass(env, "java/net/Inet6Address");
+ CHECK_NULL_RETURN(c, NULL);
+ inet6Cls = (*env)->NewGlobalRef(env, c);
+ CHECK_NULL_RETURN(inet6Cls, NULL);
+ (*env)->DeleteLocalRef(env, c);
+ }
+ iaObj = (*env)->NewObject(env, inet6Cls, ia6_ctrID);
+ CHECK_NULL_RETURN(iaObj, NULL);
+ ipaddress = (*env)->NewByteArray(env, 16);
+ CHECK_NULL_RETURN(ipaddress, NULL);
+ (*env)->SetByteArrayRegion(env, ipaddress, 0, 16,
+ (jbyte *)&(him6->sin6_addr));
+
+ (*env)->SetObjectField(env, iaObj, ia6_ipaddressID, ipaddress);
+
+ (*env)->SetIntField(env, iaObj, ia_familyID, IPv6);
+ (*env)->SetIntField(env, iaObj, ia6_scopeidID, getScopeID(him));
+ }
+ *port = ntohs(him6->sin6_port);
+ } else
+#endif /* AF_INET6 */
+ {
+ struct sockaddr_in *him4 = (struct sockaddr_in *)him;
+ static jclass inet4Cls = 0;
+
+ if (inet4Cls == 0) {
+ jclass c = (*env)->FindClass(env, "java/net/Inet4Address");
+ CHECK_NULL_RETURN(c, NULL);
+ inet4Cls = (*env)->NewGlobalRef(env, c);
+ CHECK_NULL_RETURN(inet4Cls, NULL);
+ (*env)->DeleteLocalRef(env, c);
+ }
+ iaObj = (*env)->NewObject(env, inet4Cls, ia4_ctrID);
+ CHECK_NULL_RETURN(iaObj, NULL);
+ (*env)->SetIntField(env, iaObj, ia_familyID, IPv4);
+ (*env)->SetIntField(env, iaObj, ia_addressID,
+ ntohl(him4->sin_addr.s_addr));
+ *port = ntohs(him4->sin_port);
+ }
+ return iaObj;
+}
+
+jint
+NET_SockaddrEqualsInetAddress(JNIEnv *env, struct sockaddr *him, jobject iaObj)
+{
+ jint family = (*env)->GetIntField(env, iaObj, ia_familyID) == IPv4?
+ AF_INET : AF_INET6;
+
+#ifdef AF_INET6
+ if (him->sa_family == AF_INET6) {
+#ifdef WIN32
+ struct SOCKADDR_IN6 *him6 = (struct SOCKADDR_IN6 *)him;
+#else
+ struct sockaddr_in6 *him6 = (struct sockaddr_in6 *)him;
+#endif
+ jbyte *caddrNew = (jbyte *)&(him6->sin6_addr);
+ if (NET_IsIPv4Mapped(caddrNew)) {
+ int addrNew;
+ int addrCur;
+ if (family == AF_INET6) {
+ return JNI_FALSE;
+ }
+ addrNew = NET_IPv4MappedToIPv4(caddrNew);
+ addrCur = (*env)->GetIntField(env, iaObj, ia_addressID);
+ if (addrNew == addrCur) {
+ return JNI_TRUE;
+ } else {
+ return JNI_FALSE;
+ }
+ } else {
+ jbyteArray ipaddress;
+ jbyte caddrCur[16];
+ int scope;
+
+ if (family == AF_INET) {
+ return JNI_FALSE;
+ }
+ ipaddress = (*env)->GetObjectField(env, iaObj, ia6_ipaddressID);
+ scope = (*env)->GetIntField(env, iaObj, ia6_scopeidID);
+ (*env)->GetByteArrayRegion(env, ipaddress, 0, 16, caddrCur);
+ if (NET_IsEqual(caddrNew, caddrCur) && cmpScopeID(scope, him)) {
+ return JNI_TRUE;
+ } else {
+ return JNI_FALSE;
+ }
+ }
+ } else
+#endif /* AF_INET6 */
+ {
+ struct sockaddr_in *him4 = (struct sockaddr_in *)him;
+ int addrNew, addrCur;
+ if (family != AF_INET) {
+ return JNI_FALSE;
+ }
+ addrNew = ntohl(him4->sin_addr.s_addr);
+ addrCur = (*env)->GetIntField(env, iaObj, ia_addressID);
+ if (addrNew == addrCur) {
+ return JNI_TRUE;
+ } else {
+ return JNI_FALSE;
+ }
+ }
+}
+
+unsigned short
+in_cksum(unsigned short *addr, int len) {
+ int nleft = len;
+ int sum = 0;
+ unsigned short *w = addr;
+ unsigned short answer = 0;
+ while(nleft > 1) {
+ sum += *w++;
+ nleft -= 2;
+ }
+
+ if (nleft == 1) {
+ *(unsigned char *) (&answer) = *(unsigned char *)w;
+ sum += answer;
+ }
+
+ sum = (sum >> 16) + (sum & 0xffff);
+ sum += (sum >> 16);
+ answer = ~sum;
+ return (answer);
+}