author | aeubanks |
Tue, 16 Apr 2019 13:16:49 -0700 | |
changeset 54627 | 22323f20401b |
parent 51151 | d6b131d2bc8b |
child 59243 | fb1d9bf1be2b |
permissions | -rw-r--r-- |
2 | 1 |
/* |
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* Copyright (c) 1998, 2018, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 |
* |
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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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||
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#include "java_net_InetAddress.h" |
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|
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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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jobject getInet6Address_scopeifname(JNIEnv *env, jobject iaObj) { |
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jobject holder = (*env)->GetObjectField(env, iaObj, ia6_holder6ID); |
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CHECK_NULL_RETURN(holder, NULL); |
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return (*env)->GetObjectField(env, holder, ia6_scopeifnameID); |
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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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jboolean getInet6Address_scopeid_set(JNIEnv *env, jobject iaObj) { |
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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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return (*env)->GetBooleanField(env, holder, ia6_scopeidsetID); |
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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); |
190 |
} |
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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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jobject getInetAddress_hostName(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", NULL); |
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return (*env)->GetObjectField(env, holder, iac_hostNameID); |
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} |
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JNIEXPORT jobject JNICALL |
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NET_SockaddrToInetAddress(JNIEnv *env, SOCKETADDRESS *sa, int *port) { |
2 | 219 |
jobject iaObj; |
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if (sa->sa.sa_family == AF_INET6) { |
221 |
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); |
226 |
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); |
2 | 231 |
} 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) |
237 |
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); |
2 | 241 |
} |
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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); |
43100 | 248 |
setInetAddress_addr(env, iaObj, ntohl(sa->sa4.sin_addr.s_addr)); |
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JNU_CHECK_EXCEPTION_RETURN(env, NULL); |
43100 | 250 |
*port = ntohs(sa->sa4.sin_port); |
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} |
2 | 252 |
return iaObj; |
253 |
} |
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254 |
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JNIEXPORT jboolean JNICALL |
256 |
NET_SockaddrEqualsInetAddress(JNIEnv *env, SOCKETADDRESS *sa, jobject iaObj) |
|
2 | 257 |
{ |
43100 | 258 |
jint family = getInetAddress_family(env, iaObj) == |
259 |
java_net_InetAddress_IPv4 ? AF_INET : AF_INET6; |
|
51151 | 260 |
JNU_CHECK_EXCEPTION_RETURN(env, JNI_FALSE); |
43100 | 261 |
if (sa->sa.sa_family == AF_INET6) { |
262 |
jbyte *caddrNew = (jbyte *)&sa->sa6.sin6_addr; |
|
2 | 263 |
if (NET_IsIPv4Mapped(caddrNew)) { |
43100 | 264 |
int addrNew, addrCur; |
2 | 265 |
if (family == AF_INET6) { |
266 |
return JNI_FALSE; |
|
267 |
} |
|
268 |
addrNew = NET_IPv4MappedToIPv4(caddrNew); |
|
16870 | 269 |
addrCur = getInetAddress_addr(env, iaObj); |
51151 | 270 |
JNU_CHECK_EXCEPTION_RETURN(env, JNI_FALSE); |
2 | 271 |
if (addrNew == addrCur) { |
272 |
return JNI_TRUE; |
|
273 |
} else { |
|
274 |
return JNI_FALSE; |
|
275 |
} |
|
276 |
} else { |
|
277 |
jbyte caddrCur[16]; |
|
278 |
if (family == AF_INET) { |
|
279 |
return JNI_FALSE; |
|
280 |
} |
|
20821 | 281 |
getInet6Address_ipaddress(env, iaObj, (char *)caddrCur); |
43100 | 282 |
if (NET_IsEqual(caddrNew, caddrCur) && |
283 |
sa->sa6.sin6_scope_id == getInet6Address_scopeid(env, iaObj)) |
|
284 |
{ |
|
2 | 285 |
return JNI_TRUE; |
286 |
} else { |
|
287 |
return JNI_FALSE; |
|
288 |
} |
|
289 |
} |
|
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290 |
} else { |
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291 |
int addrNew, addrCur; |
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if (family != AF_INET) { |
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return JNI_FALSE; |
2 | 294 |
} |
43100 | 295 |
addrNew = ntohl(sa->sa4.sin_addr.s_addr); |
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addrCur = getInetAddress_addr(env, iaObj); |
51151 | 297 |
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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300 |
} else { |
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return JNI_FALSE; |
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302 |
} |
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303 |
} |
2 | 304 |
} |
305 |
||
43100 | 306 |
JNIEXPORT jint JNICALL |
307 |
NET_GetPortFromSockaddr(SOCKETADDRESS *sa) { |
|
308 |
if (sa->sa.sa_family == AF_INET6) { |
|
309 |
return ntohs(sa->sa6.sin6_port); |
|
310 |
} else { |
|
311 |
return ntohs(sa->sa4.sin_port); |
|
312 |
} |
|
313 |
} |
|
314 |
||
2 | 315 |
unsigned short |
316 |
in_cksum(unsigned short *addr, int len) { |
|
317 |
int nleft = len; |
|
318 |
int sum = 0; |
|
319 |
unsigned short *w = addr; |
|
320 |
unsigned short answer = 0; |
|
321 |
while(nleft > 1) { |
|
322 |
sum += *w++; |
|
323 |
nleft -= 2; |
|
324 |
} |
|
325 |
||
326 |
if (nleft == 1) { |
|
327 |
*(unsigned char *) (&answer) = *(unsigned char *)w; |
|
328 |
sum += answer; |
|
329 |
} |
|
330 |
||
331 |
sum = (sum >> 16) + (sum & 0xffff); |
|
332 |
sum += (sum >> 16); |
|
333 |
answer = ~sum; |
|
334 |
return (answer); |
|
335 |
} |