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 iac_origHostNameID; 57 extern jfieldID ia_preferIPv6AddressID; 58 59 /** (Inet6Address accessors) 60 * set_ methods return JNI_TRUE on success JNI_FALSE on error 61 * get_ methods that return int/boolean, return -1 on error 62 * get_ methods that return objects return NULL on error. 63 */ 64 extern jobject getInet6Address_scopeifname(JNIEnv *env, jobject ia6Obj); 65 extern int setInet6Address_scopeifname(JNIEnv *env, jobject ia6Obj, jobject scopeifname); 66 extern int getInet6Address_scopeid_set(JNIEnv *env, jobject ia6Obj); 67 extern int getInet6Address_scopeid(JNIEnv *env, jobject ia6Obj); 68 extern int setInet6Address_scopeid(JNIEnv *env, jobject ia6Obj, int scopeid); 69 extern int getInet6Address_ipaddress(JNIEnv *env, jobject ia6Obj, char *dest); 70 extern int setInet6Address_ipaddress(JNIEnv *env, jobject ia6Obj, char *address); 71 72 extern void setInetAddress_addr(JNIEnv *env, jobject iaObj, int address); 73 extern void setInetAddress_family(JNIEnv *env, jobject iaObj, int family); 74 extern void setInetAddress_hostName(JNIEnv *env, jobject iaObj, jobject h); 75 extern int getInetAddress_addr(JNIEnv *env, jobject iaObj); 76 extern int getInetAddress_family(JNIEnv *env, jobject iaObj); 77 extern jobject getInetAddress_hostName(JNIEnv *env, jobject iaObj); 78 79 extern jclass ia4_class; 80 extern jmethodID ia4_ctrID; 81 82 /* Android-removed: NetworkInterface moved away fro JNI */ 83 #if 0 84 /* NetworkInterface fields */ 85 extern jclass ni_class; 86 extern jfieldID ni_nameID; 87 extern jfieldID ni_indexID; 88 extern jfieldID ni_addrsID; 89 extern jfieldID ni_descID; 90 extern jmethodID ni_ctrID; 91 #endif 92 93 /* Android-removed: PlainSocketImpl moved away fro JNI */ 94 #if 0 95 /* PlainSocketImpl fields */ 96 extern jfieldID psi_timeoutID; 97 extern jfieldID psi_fdID; 98 extern jfieldID psi_addressID; 99 extern jfieldID psi_portID; 100 extern jfieldID psi_localportID; 101 #endif 102 103 /* Android-removed: DatagramSocket moved away from JNI */ 104 #if 0 105 /* DatagramPacket fields */ 106 extern jfieldID dp_addressID; 107 extern jfieldID dp_portID; 108 extern jfieldID dp_bufID; 109 extern jfieldID dp_offsetID; 110 extern jfieldID dp_lengthID; 111 extern jfieldID dp_bufLengthID; 112 #endif 113 114 /* Inet6Address fields */ 115 extern jclass ia6_class; 116 extern jfieldID ia6_holder6ID; 117 extern jfieldID ia6_ipaddressID; 118 extern jfieldID ia6_scopeidID; 119 extern jfieldID ia6_scopeidsetID; 120 extern jfieldID ia6_scopeifnameID; 121 extern jmethodID ia6_ctrID; 122 123 /************************************************************************ 124 * Utilities 125 */ 126 127 JNIEXPORT void JNICALL NET_ThrowNew(JNIEnv *env, int errorNum, char *msg); 128 int NET_GetError(); 129 130 void NET_ThrowCurrent(JNIEnv *env, char *msg); 131 132 jfieldID NET_GetFileDescriptorID(JNIEnv *env); 133 134 JNIEXPORT jint JNICALL ipv6_available(); 135 136 void 137 NET_AllocSockaddr(struct sockaddr **him, int *len); 138 139 JNIEXPORT int JNICALL 140 NET_InetAddressToSockaddr(JNIEnv *env, jobject iaObj, int port, struct sockaddr *him, int *len, jboolean v4MappedAddress); 141 142 JNIEXPORT jobject JNICALL 143 NET_SockaddrToInetAddress(JNIEnv *env, struct sockaddr *him, int *port); 144 145 void initLocalAddrTable (); 146 void parseExclusiveBindProperty(JNIEnv *env); 147 148 // Android-removed: unused 149 #if 0 150 void 151 NET_SetTrafficClass(struct sockaddr *him, int trafficClass); 152 #endif 153 154 JNIEXPORT jint JNICALL 155 NET_GetPortFromSockaddr(struct sockaddr *him); 156 157 JNIEXPORT jint JNICALL 158 NET_SockaddrEqualsInetAddress(JNIEnv *env,struct sockaddr *him, jobject iaObj); 159 160 int 161 NET_IsIPv4Mapped(jbyte* caddr); 162 163 int 164 NET_IPv4MappedToIPv4(jbyte* caddr); 165 166 int 167 NET_IsEqual(jbyte* caddr1, jbyte* caddr2); 168 169 // Android-removed: unused 170 #if 0 171 int 172 NET_IsZeroAddr(jbyte* caddr); 173 #endif 174 175 /* Socket operations 176 * 177 * These work just like the JVM_* procedures, except that they may do some 178 * platform-specific pre/post processing of the arguments and/or results. 179 */ 180 181 JNIEXPORT int JNICALL 182 NET_GetSockOpt(int fd, int level, int opt, void *result, int *len); 183 184 JNIEXPORT int JNICALL 185 NET_SetSockOpt(int fd, int level, int opt, const void *arg, int len); 186 187 JNIEXPORT int JNICALL 188 NET_Bind(int fd, struct sockaddr *him, int len); 189 190 // Android-removed: unused 191 #if 0 192 JNIEXPORT int JNICALL 193 NET_MapSocketOption(jint cmd, int *level, int *optname); 194 195 JNIEXPORT int JNICALL 196 NET_MapSocketOptionV6(jint cmd, int *level, int *optname); 197 #endif 198 199 int getScopeID (struct sockaddr *); 200 201 int cmpScopeID (unsigned int, struct sockaddr *); 202 203 unsigned short in_cksum(unsigned short *addr, int len); 204 #endif /* NET_UTILS_H */ 205