author | mbaesken |
Fri, 22 Nov 2019 10:29:12 +0100 | |
changeset 59243 | fb1d9bf1be2b |
parent 54627 | 22323f20401b |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1998, 2019, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
|
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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||
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#include "net_util.h" |
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#include "java_net_InetAddress.h" |
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int IPv4_supported(); |
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int IPv6_supported(); |
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int reuseport_supported(); |
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static int IPv4_available; |
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static int IPv6_available; |
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static int REUSEPORT_available; |
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JNIEXPORT jint JNICALL ipv4_available() |
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{ |
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return IPv4_available; |
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} |
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JNIEXPORT jint JNICALL ipv6_available() |
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{ |
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return IPv6_available; |
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} |
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JNIEXPORT jint JNICALL reuseport_available() |
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{ |
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return REUSEPORT_available; |
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} |
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JNIEXPORT jint JNICALL |
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DEF_JNI_OnLoad(JavaVM *vm, void *reserved) |
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{ |
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JNIEnv *env; |
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jclass iCls; |
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jmethodID mid; |
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jstring s; |
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jint preferIPv4Stack; |
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if ((*vm)->GetEnv(vm, (void**) &env, JNI_VERSION_1_2) != JNI_OK) { |
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return JNI_EVERSION; /* JNI version not supported */ |
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} |
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iCls = (*env)->FindClass(env, "java/lang/Boolean"); |
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CHECK_NULL_RETURN(iCls, JNI_VERSION_1_2); |
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mid = (*env)->GetStaticMethodID(env, iCls, "getBoolean", "(Ljava/lang/String;)Z"); |
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CHECK_NULL_RETURN(mid, JNI_VERSION_1_2); |
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s = (*env)->NewStringUTF(env, "java.net.preferIPv4Stack"); |
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CHECK_NULL_RETURN(s, JNI_VERSION_1_2); |
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preferIPv4Stack = (*env)->CallStaticBooleanMethod(env, iCls, mid, s); |
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/* |
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* Since we have initialized and loaded the socket library we will |
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* check now whether we have IPv6 on this platform and if the |
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* supporting socket APIs are available |
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*/ |
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IPv4_available = IPv4_supported(); |
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IPv6_available = IPv6_supported() & (!preferIPv4Stack); |
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/* check if SO_REUSEPORT is supported on this platform */ |
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REUSEPORT_available = reuseport_supported(); |
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platformInit(); |
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parseExclusiveBindProperty(env); |
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return JNI_VERSION_1_2; |
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} |
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static int initialized = 0; |
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JNIEXPORT void JNICALL initInetAddressIDs(JNIEnv *env) { |
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if (!initialized) { |
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Java_java_net_InetAddress_init(env, 0); |
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JNU_CHECK_EXCEPTION(env); |
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Java_java_net_Inet4Address_init(env, 0); |
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JNU_CHECK_EXCEPTION(env); |
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Java_java_net_Inet6Address_init(env, 0); |
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JNU_CHECK_EXCEPTION(env); |
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initialized = 1; |
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} |
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} |
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/* The address, and family fields used to be in InetAddress |
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* but are now in an implementation object. So, there is an extra |
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* level of indirection to access them now. |
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*/ |
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extern jclass iac_class; |
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extern jfieldID ia_holderID; |
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extern jfieldID iac_addressID; |
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extern jfieldID iac_familyID; |
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/** |
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* set_ methods return JNI_TRUE on success JNI_FALSE on error |
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* get_ methods that return +ve int return -1 on error |
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* get_ methods that return objects return NULL on error. |
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*/ |
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jboolean setInet6Address_scopeifname(JNIEnv *env, jobject iaObj, jobject scopeifname) { |
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jobject holder = (*env)->GetObjectField(env, iaObj, ia6_holder6ID); |
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CHECK_NULL_RETURN(holder, JNI_FALSE); |
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(*env)->SetObjectField(env, holder, ia6_scopeifnameID, scopeifname); |
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return JNI_TRUE; |
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} |
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unsigned int getInet6Address_scopeid(JNIEnv *env, jobject iaObj) { |
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jobject holder = (*env)->GetObjectField(env, iaObj, ia6_holder6ID); |
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CHECK_NULL_RETURN(holder, 0); |
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return (unsigned int)(*env)->GetIntField(env, holder, ia6_scopeidID); |
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} |
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jboolean setInet6Address_scopeid(JNIEnv *env, jobject iaObj, int scopeid) { |
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jobject holder = (*env)->GetObjectField(env, iaObj, ia6_holder6ID); |
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CHECK_NULL_RETURN(holder, JNI_FALSE); |
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(*env)->SetIntField(env, holder, ia6_scopeidID, scopeid); |
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if (scopeid > 0) { |
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(*env)->SetBooleanField(env, holder, ia6_scopeidsetID, JNI_TRUE); |
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} |
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return JNI_TRUE; |
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} |
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jboolean getInet6Address_ipaddress(JNIEnv *env, jobject iaObj, char *dest) { |
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jobject holder, addr; |
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holder = (*env)->GetObjectField(env, iaObj, ia6_holder6ID); |
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CHECK_NULL_RETURN(holder, JNI_FALSE); |
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addr = (*env)->GetObjectField(env, holder, ia6_ipaddressID); |
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CHECK_NULL_RETURN(addr, JNI_FALSE); |
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(*env)->GetByteArrayRegion(env, addr, 0, 16, (jbyte *)dest); |
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return JNI_TRUE; |
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} |
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jboolean setInet6Address_ipaddress(JNIEnv *env, jobject iaObj, char *address) { |
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jobject holder; |
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jbyteArray addr; |
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holder = (*env)->GetObjectField(env, iaObj, ia6_holder6ID); |
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CHECK_NULL_RETURN(holder, JNI_FALSE); |
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addr = (jbyteArray)(*env)->GetObjectField(env, holder, ia6_ipaddressID); |
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if (addr == NULL) { |
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addr = (*env)->NewByteArray(env, 16); |
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CHECK_NULL_RETURN(addr, JNI_FALSE); |
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(*env)->SetObjectField(env, holder, ia6_ipaddressID, addr); |
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} |
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(*env)->SetByteArrayRegion(env, addr, 0, 16, (jbyte *)address); |
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return JNI_TRUE; |
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} |
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void setInetAddress_addr(JNIEnv *env, jobject iaObj, int address) { |
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jobject holder = (*env)->GetObjectField(env, iaObj, ia_holderID); |
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CHECK_NULL_THROW_NPE(env, holder, "InetAddress holder is null"); |
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(*env)->SetIntField(env, holder, iac_addressID, address); |
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} |
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void setInetAddress_family(JNIEnv *env, jobject iaObj, int family) { |
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jobject holder = (*env)->GetObjectField(env, iaObj, ia_holderID); |
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CHECK_NULL_THROW_NPE(env, holder, "InetAddress holder is null"); |
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(*env)->SetIntField(env, holder, iac_familyID, family); |
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} |
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void setInetAddress_hostName(JNIEnv *env, jobject iaObj, jobject host) { |
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jobject holder = (*env)->GetObjectField(env, iaObj, ia_holderID); |
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CHECK_NULL_THROW_NPE(env, holder, "InetAddress holder is null"); |
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(*env)->SetObjectField(env, holder, iac_hostNameID, host); |
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(*env)->SetObjectField(env, holder, iac_origHostNameID, host); |
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} |
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int getInetAddress_addr(JNIEnv *env, jobject iaObj) { |
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jobject holder = (*env)->GetObjectField(env, iaObj, ia_holderID); |
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CHECK_NULL_THROW_NPE_RETURN(env, holder, "InetAddress holder is null", -1); |
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return (*env)->GetIntField(env, holder, iac_addressID); |
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} |
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int getInetAddress_family(JNIEnv *env, jobject iaObj) { |
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jobject holder = (*env)->GetObjectField(env, iaObj, ia_holderID); |
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CHECK_NULL_THROW_NPE_RETURN(env, holder, "InetAddress holder is null", -1); |
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return (*env)->GetIntField(env, holder, iac_familyID); |
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} |
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JNIEXPORT jobject JNICALL |
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NET_SockaddrToInetAddress(JNIEnv *env, SOCKETADDRESS *sa, int *port) { |
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jobject iaObj; |
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if (sa->sa.sa_family == AF_INET6) { |
203 |
jbyte *caddr = (jbyte *)&sa->sa6.sin6_addr; |
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if (NET_IsIPv4Mapped(caddr)) { |
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int address; |
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iaObj = (*env)->NewObject(env, ia4_class, ia4_ctrID); |
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CHECK_NULL_RETURN(iaObj, NULL); |
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address = NET_IPv4MappedToIPv4(caddr); |
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setInetAddress_addr(env, iaObj, address); |
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JNU_CHECK_EXCEPTION_RETURN(env, NULL); |
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setInetAddress_family(env, iaObj, java_net_InetAddress_IPv4); |
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JNU_CHECK_EXCEPTION_RETURN(env, NULL); |
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} else { |
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jboolean ret; |
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iaObj = (*env)->NewObject(env, ia6_class, ia6_ctrID); |
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CHECK_NULL_RETURN(iaObj, NULL); |
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ret = setInet6Address_ipaddress(env, iaObj, (char *)&sa->sa6.sin6_addr); |
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if (ret == JNI_FALSE) |
219 |
return NULL; |
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setInetAddress_family(env, iaObj, java_net_InetAddress_IPv6); |
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JNU_CHECK_EXCEPTION_RETURN(env, NULL); |
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setInet6Address_scopeid(env, iaObj, sa->sa6.sin6_scope_id); |
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} |
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*port = ntohs(sa->sa6.sin6_port); |
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} else { |
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iaObj = (*env)->NewObject(env, ia4_class, ia4_ctrID); |
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CHECK_NULL_RETURN(iaObj, NULL); |
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setInetAddress_family(env, iaObj, java_net_InetAddress_IPv4); |
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JNU_CHECK_EXCEPTION_RETURN(env, NULL); |
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setInetAddress_addr(env, iaObj, ntohl(sa->sa4.sin_addr.s_addr)); |
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JNU_CHECK_EXCEPTION_RETURN(env, NULL); |
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*port = ntohs(sa->sa4.sin_port); |
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} |
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return iaObj; |
235 |
} |
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JNIEXPORT jboolean JNICALL |
238 |
NET_SockaddrEqualsInetAddress(JNIEnv *env, SOCKETADDRESS *sa, jobject iaObj) |
|
2 | 239 |
{ |
43100 | 240 |
jint family = getInetAddress_family(env, iaObj) == |
241 |
java_net_InetAddress_IPv4 ? AF_INET : AF_INET6; |
|
51151 | 242 |
JNU_CHECK_EXCEPTION_RETURN(env, JNI_FALSE); |
43100 | 243 |
if (sa->sa.sa_family == AF_INET6) { |
244 |
jbyte *caddrNew = (jbyte *)&sa->sa6.sin6_addr; |
|
2 | 245 |
if (NET_IsIPv4Mapped(caddrNew)) { |
43100 | 246 |
int addrNew, addrCur; |
2 | 247 |
if (family == AF_INET6) { |
248 |
return JNI_FALSE; |
|
249 |
} |
|
250 |
addrNew = NET_IPv4MappedToIPv4(caddrNew); |
|
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addrCur = getInetAddress_addr(env, iaObj); |
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JNU_CHECK_EXCEPTION_RETURN(env, JNI_FALSE); |
2 | 253 |
if (addrNew == addrCur) { |
254 |
return JNI_TRUE; |
|
255 |
} else { |
|
256 |
return JNI_FALSE; |
|
257 |
} |
|
258 |
} else { |
|
259 |
jbyte caddrCur[16]; |
|
260 |
if (family == AF_INET) { |
|
261 |
return JNI_FALSE; |
|
262 |
} |
|
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getInet6Address_ipaddress(env, iaObj, (char *)caddrCur); |
43100 | 264 |
if (NET_IsEqual(caddrNew, caddrCur) && |
265 |
sa->sa6.sin6_scope_id == getInet6Address_scopeid(env, iaObj)) |
|
266 |
{ |
|
2 | 267 |
return JNI_TRUE; |
268 |
} else { |
|
269 |
return JNI_FALSE; |
|
270 |
} |
|
271 |
} |
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} else { |
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int addrNew, addrCur; |
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if (family != AF_INET) { |
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return JNI_FALSE; |
2 | 276 |
} |
43100 | 277 |
addrNew = ntohl(sa->sa4.sin_addr.s_addr); |
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addrCur = getInetAddress_addr(env, iaObj); |
51151 | 279 |
JNU_CHECK_EXCEPTION_RETURN(env, JNI_FALSE); |
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if (addrNew == addrCur) { |
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return JNI_TRUE; |
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} else { |
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return JNI_FALSE; |
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} |
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285 |
} |
2 | 286 |
} |
287 |
||
43100 | 288 |
JNIEXPORT jint JNICALL |
289 |
NET_GetPortFromSockaddr(SOCKETADDRESS *sa) { |
|
290 |
if (sa->sa.sa_family == AF_INET6) { |
|
291 |
return ntohs(sa->sa6.sin6_port); |
|
292 |
} else { |
|
293 |
return ntohs(sa->sa4.sin_port); |
|
294 |
} |
|
295 |
} |
|
296 |
||
2 | 297 |
unsigned short |
298 |
in_cksum(unsigned short *addr, int len) { |
|
299 |
int nleft = len; |
|
300 |
int sum = 0; |
|
301 |
unsigned short *w = addr; |
|
302 |
unsigned short answer = 0; |
|
303 |
while(nleft > 1) { |
|
304 |
sum += *w++; |
|
305 |
nleft -= 2; |
|
306 |
} |
|
307 |
||
308 |
if (nleft == 1) { |
|
309 |
*(unsigned char *) (&answer) = *(unsigned char *)w; |
|
310 |
sum += answer; |
|
311 |
} |
|
312 |
||
313 |
sum = (sum >> 16) + (sum & 0xffff); |
|
314 |
sum += (sum >> 16); |
|
315 |
answer = ~sum; |
|
316 |
return (answer); |
|
317 |
} |