1 /* 2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 #ifndef NET_UTILS_H 27 #define NET_UTILS_H 28 29 #include "jvm.h" 30 #include "jni_util.h" 31 #include "net_util_md.h" 32 33 /************************************************************************ 34 * Macros and misc constants 35 */ 36 37 #define MAX_PACKET_LEN 65536 38 39 #define IPv4 AF_INET 40 #define IPv6 AF_INET6 41 42 #define NET_ERROR(env, ex, msg) \ 43 { if (!(*env)->ExceptionOccurred(env)) JNU_ThrowByName(env, ex, msg) } 44 45 #define CHECK_NULL(x) if ((x) == NULL) return; 46 #define CHECK_NULL_RETURN(x, y) if ((x) == NULL) return y; 47 48 /************************************************************************ 49 * Cached field IDs 50 * 51 * The naming convention for field IDs is 52 * <class abbrv>_<fieldName>ID 53 * i.e. psi_timeoutID is PlainSocketImpl's timeout field's ID. 54 */ 55 extern jclass ia_class; 56 extern jfieldID iac_addressID; 57 extern jfieldID iac_familyID; 58 extern jfieldID iac_hostNameID; 59 extern jfieldID ia_preferIPv6AddressID; 60 61 extern void setInetAddress_addr(JNIEnv *env, jobject iaObj, int address); 62 extern void setInetAddress_family(JNIEnv *env, jobject iaObj, int family); 63 extern void setInetAddress_hostName(JNIEnv *env, jobject iaObj, jobject h); 64 extern int getInetAddress_addr(JNIEnv *env, jobject iaObj); 65 extern int getInetAddress_family(JNIEnv *env, jobject iaObj); 66 extern jobject getInetAddress_hostName(JNIEnv *env, jobject iaObj); 67 68 extern jclass ia4_class; 69 extern jmethodID ia4_ctrID; 70 71 /* NetworkInterface fields */ 72 extern jclass ni_class; 73 extern jfieldID ni_nameID; 74 extern jfieldID ni_indexID; 75 extern jfieldID ni_addrsID; 76 extern jfieldID ni_descID; 77 extern jmethodID ni_ctrID; 78 79 /* PlainSocketImpl fields */ 80 extern jfieldID psi_timeoutID; 81 extern jfieldID psi_fdID; 82 extern jfieldID psi_addressID; 83 extern jfieldID psi_portID; 84 extern jfieldID psi_localportID; 85 86 /* DatagramPacket fields */ 87 extern jfieldID dp_addressID; 88 extern jfieldID dp_portID; 89 extern jfieldID dp_bufID; 90 extern jfieldID dp_offsetID; 91 extern jfieldID dp_lengthID; 92 extern jfieldID dp_bufLengthID; 93 94 /* Inet6Address fields */ 95 extern jclass ia6_class; 96 extern jfieldID ia6_ipaddressID; 97 extern jfieldID ia6_scopeidID; 98 extern jfieldID ia6_scopeidsetID; 99 extern jfieldID ia6_scopeifnameID; 100 extern jfieldID ia6_scopeifnamesetID; 101 extern jmethodID ia6_ctrID; 102 103 /************************************************************************ 104 * Utilities 105 */ 106 107 JNIEXPORT void JNICALL NET_ThrowNew(JNIEnv *env, int errorNum, char *msg); 108 int NET_GetError(); 109 110 void NET_ThrowCurrent(JNIEnv *env, char *msg); 111 112 jfieldID NET_GetFileDescriptorID(JNIEnv *env); 113 114 JNIEXPORT jint JNICALL ipv6_available(); 115 116 void 117 NET_AllocSockaddr(struct sockaddr **him, int *len); 118 119 JNIEXPORT int JNICALL 120 NET_InetAddressToSockaddr(JNIEnv *env, jobject iaObj, int port, struct sockaddr *him, int *len, jboolean v4MappedAddress); 121 122 JNIEXPORT jobject JNICALL 123 NET_SockaddrToInetAddress(JNIEnv *env, struct sockaddr *him, int *port); 124 125 void initLocalAddrTable (); 126 void parseExclusiveBindProperty(JNIEnv *env); 127 128 void 129 NET_SetTrafficClass(struct sockaddr *him, int trafficClass); 130 131 JNIEXPORT jint JNICALL 132 NET_GetPortFromSockaddr(struct sockaddr *him); 133 134 JNIEXPORT jint JNICALL 135 NET_SockaddrEqualsInetAddress(JNIEnv *env,struct sockaddr *him, jobject iaObj); 136 137 int 138 NET_IsIPv4Mapped(jbyte* caddr); 139 140 int 141 NET_IPv4MappedToIPv4(jbyte* caddr); 142 143 int 144 NET_IsEqual(jbyte* caddr1, jbyte* caddr2); 145 146 int 147 NET_IsZeroAddr(jbyte* caddr); 148 149 /* Socket operations 150 * 151 * These work just like the JVM_* procedures, except that they may do some 152 * platform-specific pre/post processing of the arguments and/or results. 153 */ 154 155 JNIEXPORT int JNICALL 156 NET_GetSockOpt(int fd, int level, int opt, void *result, int *len); 157 158 JNIEXPORT int JNICALL 159 NET_SetSockOpt(int fd, int level, int opt, const void *arg, int len); 160 161 JNIEXPORT int JNICALL 162 NET_Bind(int fd, struct sockaddr *him, int len); 163 164 JNIEXPORT int JNICALL 165 NET_MapSocketOption(jint cmd, int *level, int *optname); 166 167 JNIEXPORT int JNICALL 168 NET_MapSocketOptionV6(jint cmd, int *level, int *optname); 169 170 int getScopeID (struct sockaddr *); 171 172 int cmpScopeID (unsigned int, struct sockaddr *); 173 174 unsigned short in_cksum(unsigned short *addr, int len); 175 #endif /* NET_UTILS_H */ 176
