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src/java.base/share/native/libnet/net_util.h
207 строк
7 KB
Goetz Lindenmaier
8216417: cleanup of IPv6 scope-id handling
28 сен 2021, 11:05
28 сен 2021, 11:05
1476158
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/* * Copyright (c) 1997, 2018, Oracle and/or its affiliates. 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. 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. */ #ifndef NET_UTILS_H #define NET_UTILS_H #include "jvm.h" #include "jni_util.h" #include "net_util_md.h" /************************************************************************ * Macros and misc constants */ #define MAX_PACKET_LEN 65536 #define NET_WAIT_READ 0x01 #define NET_WAIT_WRITE 0x02 #define NET_WAIT_CONNECT 0x04 /************************************************************************ * Cached field IDs * * The naming convention for field IDs is * <class abbrv>_<fieldName>ID * i.e. psi_timeoutID is PlainSocketImpl's timeout field's ID. */ extern jclass ia_class; extern jfieldID iac_addressID; extern jfieldID iac_familyID; extern jfieldID iac_hostNameID; extern jfieldID iac_origHostNameID; extern jfieldID ia_preferIPv6AddressID; JNIEXPORT void JNICALL initInetAddressIDs(JNIEnv *env); /** (Inet6Address accessors) * set_ methods return JNI_TRUE on success JNI_FALSE on error * get_ methods that return int/boolean, return -1 on error * get_ methods that return objects return NULL on error. */ extern jobject getInet6Address_scopeifname(JNIEnv *env, jobject ia6Obj); extern jboolean setInet6Address_scopeifname(JNIEnv *env, jobject ia6Obj, jobject scopeifname); extern jboolean getInet6Address_scopeid_set(JNIEnv *env, jobject ia6Obj); extern unsigned int getInet6Address_scopeid(JNIEnv *env, jobject ia6Obj); extern jboolean setInet6Address_scopeid(JNIEnv *env, jobject ia6Obj, int scopeid); extern jboolean getInet6Address_ipaddress(JNIEnv *env, jobject ia6Obj, char *dest); extern jboolean setInet6Address_ipaddress(JNIEnv *env, jobject ia6Obj, char *address); extern void setInetAddress_addr(JNIEnv *env, jobject iaObj, int address); extern void setInetAddress_family(JNIEnv *env, jobject iaObj, int family); extern void setInetAddress_hostName(JNIEnv *env, jobject iaObj, jobject h); extern int getInetAddress_addr(JNIEnv *env, jobject iaObj); extern int getInetAddress_family(JNIEnv *env, jobject iaObj); extern jobject getInetAddress_hostName(JNIEnv *env, jobject iaObj); extern jclass ia4_class; extern jmethodID ia4_ctrID; /* NetworkInterface fields */ extern jclass ni_class; extern jfieldID ni_nameID; extern jfieldID ni_indexID; extern jfieldID ni_addrsID; extern jfieldID ni_descID; extern jmethodID ni_ctrID; /* PlainSocketImpl fields */ extern jfieldID psi_timeoutID; extern jfieldID psi_fdID; extern jfieldID psi_addressID; extern jfieldID psi_portID; extern jfieldID psi_localportID; /* DatagramPacket fields */ extern jfieldID dp_addressID; extern jfieldID dp_portID; extern jfieldID dp_bufID; extern jfieldID dp_offsetID; extern jfieldID dp_lengthID; extern jfieldID dp_bufLengthID; /* Inet6Address fields */ extern jclass ia6_class; extern jfieldID ia6_holder6ID; extern jfieldID ia6_ipaddressID; extern jfieldID ia6_scopeidID; extern jfieldID ia6_scopeidsetID; extern jfieldID ia6_scopeifnameID; extern jmethodID ia6_ctrID; /************************************************************************ * Utilities */ JNIEXPORT void JNICALL Java_java_net_InetAddress_init(JNIEnv *env, jclass cls); JNIEXPORT void JNICALL Java_java_net_Inet4Address_init(JNIEnv *env, jclass cls); JNIEXPORT void JNICALL Java_java_net_Inet6Address_init(JNIEnv *env, jclass cls); JNIEXPORT void JNICALL Java_java_net_NetworkInterface_init(JNIEnv *env, jclass cls); JNIEXPORT void JNICALL NET_ThrowNew(JNIEnv *env, int errorNum, char *msg); int NET_GetError(); void NET_ThrowCurrent(JNIEnv *env, char *msg); jfieldID NET_GetFileDescriptorID(JNIEnv *env); JNIEXPORT jint JNICALL ipv6_available(); JNIEXPORT jint JNICALL reuseport_available(); /** * This function will fill a SOCKETADDRESS structure from an InetAddress * object. * * The parameter 'sa' must point to valid storage of size * 'sizeof(SOCKETADDRESS)'. * * The parameter 'len' is a pointer to an int and is used for returning * the actual sockaddr length, e.g. 'sizeof(struct sockaddr_in)' or * 'sizeof(struct sockaddr_in6)'. * * If the type of the InetAddress object is IPv6, the function will fill a * sockaddr_in6 structure. IPv6 must be available in that case, otherwise an * exception is thrown. * In the case of an IPv4 InetAddress, when IPv6 is available and * v4MappedAddress is TRUE, this method will fill a sockaddr_in6 structure * containing an IPv4 mapped IPv6 address. Otherwise a sockaddr_in * structure will be filled. */ JNIEXPORT int JNICALL NET_InetAddressToSockaddr(JNIEnv *env, jobject iaObj, int port, SOCKETADDRESS *sa, int *len, jboolean v4MappedAddress); JNIEXPORT jobject JNICALL NET_SockaddrToInetAddress(JNIEnv *env, SOCKETADDRESS *sa, int *port); void platformInit(); void parseExclusiveBindProperty(JNIEnv *env); JNIEXPORT jint JNICALL NET_GetPortFromSockaddr(SOCKETADDRESS *sa); JNIEXPORT jboolean JNICALL NET_SockaddrEqualsInetAddress(JNIEnv *env, SOCKETADDRESS *sa, jobject iaObj); int NET_IsIPv4Mapped(jbyte* caddr); int NET_IPv4MappedToIPv4(jbyte* caddr); int NET_IsEqual(jbyte* caddr1, jbyte* caddr2); int NET_IsZeroAddr(jbyte* caddr); /* Socket operations * * These work just like the system calls, except that they may do some * platform-specific pre/post processing of the arguments and/or results. */ JNIEXPORT int JNICALL NET_GetSockOpt(int fd, int level, int opt, void *result, int *len); JNIEXPORT int JNICALL NET_SetSockOpt(int fd, int level, int opt, const void *arg, int len); JNIEXPORT int JNICALL NET_Bind(int fd, SOCKETADDRESS *sa, int len); JNIEXPORT int JNICALL NET_MapSocketOption(jint cmd, int *level, int *optname); JNIEXPORT int JNICALL NET_MapSocketOptionV6(jint cmd, int *level, int *optname); JNIEXPORT jint JNICALL NET_EnableFastTcpLoopback(int fd); unsigned short in_cksum(unsigned short *addr, int len); JNIEXPORT jint JNICALL NET_Wait(JNIEnv *env, jint fd, jint flags, jint timeout); #endif /* NET_UTILS_H */