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 /************************************************************************ 46 * Cached field IDs 47 * 48 * The naming convention for field IDs is 49 * <class abbrv>_<fieldName>ID 50 * i.e. psi_timeoutID is PlainSocketImpl's timeout field's ID. 51 */ 52 extern jclass ia_class; 53 extern jfieldID iac_addressID; 54 extern jfieldID iac_familyID; 55 extern jfieldID iac_hostNameID; 56 extern jfieldID ia_preferIPv6AddressID; 57 58 /** (Inet6Address accessors) 59 * set_ methods return JNI_TRUE on success JNI_FALSE on error 60 * get_ methods that return int/boolean, return -1 on error 61 * get_ methods that return objects return NULL on error. 62 */ 63 extern jobject getInet6Address_scopeifname(JNIEnv *env, jobject ia6Obj); 64 extern int setInet6Address_scopeifname(JNIEnv *env, jobject ia6Obj, jobject scopeifname); 65 extern int getInet6Address_scopeid_set(JNIEnv *env, jobject ia6Obj); 66 extern int getInet6Address_scopeid(JNIEnv *env, jobject ia6Obj); 67 extern int setInet6Address_scopeid(JNIEnv *env, jobject ia6Obj, int scopeid); 68 extern int getInet6Address_ipaddress(JNIEnv *env, jobject ia6Obj, char *dest); 69 extern int setInet6Address_ipaddress(JNIEnv *env, jobject ia6Obj, char *address); 70 71 extern void setInetAddress_addr(JNIEnv *env, jobject iaObj, int address); 72 extern void setInetAddress_family(JNIEnv *env, jobject iaObj, int family); 73 extern void setInetAddress_hostName(JNIEnv *env, jobject iaObj, jobject h); 74 extern int getInetAddress_addr(JNIEnv *env, jobject iaObj); 75 extern int getInetAddress_family(JNIEnv *env, jobject iaObj); 76 extern jobject getInetAddress_hostName(JNIEnv *env, jobject iaObj); 77 78 extern jclass ia4_class; 79 extern jmethodID ia4_ctrID; 80 81 /* NetworkInterface fields */ 82 extern jclass ni_class; 83 extern jfieldID ni_nameID; 84 extern jfieldID ni_indexID; 85 extern jfieldID ni_addrsID; 86 extern jfieldID ni_descID; 87 extern jmethodID ni_ctrID; 88 89 /* PlainSocketImpl fields */ 90 extern jfieldID psi_timeoutID; 91 extern jfieldID psi_fdID; 92 extern jfieldID psi_addressID; 93 extern jfieldID psi_portID; 94 extern jfieldID psi_localportID; 95 96 /* Android-removed: DatagramSocket moved away from JNI */ 97 #if 0 98 /* DatagramPacket fields */ 99 extern jfieldID dp_addressID; 100 extern jfieldID dp_portID; 101 extern jfieldID dp_bufID; 102 extern jfieldID dp_offsetID; 103 extern jfieldID dp_lengthID; 104 extern jfieldID dp_bufLengthID; 105 #endif 106 107 /* Inet6Address fields */ 108 extern jclass ia6_class; 109 extern jfieldID ia6_holder6ID; 110 extern jfieldID ia6_ipaddressID; 111 extern jfieldID ia6_scopeidID; 112 extern jfieldID ia6_scopeidsetID; 113 extern jfieldID ia6_scopeifnameID; 114 extern jmethodID ia6_ctrID; 115 116 /************************************************************************ 117 * Utilities 118 */ 119 120 JNIEXPORT void JNICALL NET_ThrowNew(JNIEnv *env, int errorNum, char *msg); 121 int NET_GetError(); 122 123 void NET_ThrowCurrent(JNIEnv *env, char *msg); 124 125 jfieldID NET_GetFileDescriptorID(JNIEnv *env); 126 127 JNIEXPORT jint JNICALL ipv6_available(); 128 129 void 130 NET_AllocSockaddr(struct sockaddr **him, int *len); 131 132 JNIEXPORT int JNICALL 133 NET_InetAddressToSockaddr(JNIEnv *env, jobject iaObj, int port, struct sockaddr *him, int *len, jboolean v4MappedAddress); 134 135 JNIEXPORT jobject JNICALL 136 NET_SockaddrToInetAddress(JNIEnv *env, struct sockaddr *him, int *port); 137 138 void initLocalAddrTable (); 139 void parseExclusiveBindProperty(JNIEnv *env); 140 141 void 142 NET_SetTrafficClass(struct sockaddr *him, int trafficClass); 143 144 JNIEXPORT jint JNICALL 145 NET_GetPortFromSockaddr(struct sockaddr *him); 146 147 JNIEXPORT jint JNICALL 148 NET_SockaddrEqualsInetAddress(JNIEnv *env,struct sockaddr *him, jobject iaObj); 149 150 int 151 NET_IsIPv4Mapped(jbyte* caddr); 152 153 int 154 NET_IPv4MappedToIPv4(jbyte* caddr); 155 156 int 157 NET_IsEqual(jbyte* caddr1, jbyte* caddr2); 158 159 int 160 NET_IsZeroAddr(jbyte* caddr); 161 162 /* Socket operations 163 * 164 * These work just like the JVM_* procedures, except that they may do some 165 * platform-specific pre/post processing of the arguments and/or results. 166 */ 167 168 JNIEXPORT int JNICALL 169 NET_GetSockOpt(int fd, int level, int opt, void *result, int *len); 170 171 JNIEXPORT int JNICALL 172 NET_SetSockOpt(int fd, int level, int opt, const void *arg, int len); 173 174 JNIEXPORT int JNICALL 175 NET_Bind(int fd, struct sockaddr *him, int len); 176 177 JNIEXPORT int JNICALL 178 NET_MapSocketOption(jint cmd, int *level, int *optname); 179 180 JNIEXPORT int JNICALL 181 NET_MapSocketOptionV6(jint cmd, int *level, int *optname); 182 183 int getScopeID (struct sockaddr *); 184 185 int cmpScopeID (unsigned int, struct sockaddr *); 186 187 unsigned short in_cksum(unsigned short *addr, int len); 188 #endif /* NET_UTILS_H */ 189