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 */
52extern jclass ia_class;
53extern jfieldID iac_addressID;
54extern jfieldID iac_familyID;
55extern jfieldID iac_hostNameID;
56extern 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 */
63extern jobject getInet6Address_scopeifname(JNIEnv *env, jobject ia6Obj);
64extern int setInet6Address_scopeifname(JNIEnv *env, jobject ia6Obj, jobject scopeifname);
65extern int getInet6Address_scopeid_set(JNIEnv *env, jobject ia6Obj);
66extern int getInet6Address_scopeid(JNIEnv *env, jobject ia6Obj);
67extern int setInet6Address_scopeid(JNIEnv *env, jobject ia6Obj, int scopeid);
68extern int getInet6Address_ipaddress(JNIEnv *env, jobject ia6Obj, char *dest);
69extern int setInet6Address_ipaddress(JNIEnv *env, jobject ia6Obj, char *address);
70
71extern void setInetAddress_addr(JNIEnv *env, jobject iaObj, int address);
72extern void setInetAddress_family(JNIEnv *env, jobject iaObj, int family);
73extern void setInetAddress_hostName(JNIEnv *env, jobject iaObj, jobject h);
74extern int getInetAddress_addr(JNIEnv *env, jobject iaObj);
75extern int getInetAddress_family(JNIEnv *env, jobject iaObj);
76extern jobject getInetAddress_hostName(JNIEnv *env, jobject iaObj);
77
78extern jclass ia4_class;
79extern jmethodID ia4_ctrID;
80
81/* NetworkInterface fields */
82extern jclass ni_class;
83extern jfieldID ni_nameID;
84extern jfieldID ni_indexID;
85extern jfieldID ni_addrsID;
86extern jfieldID ni_descID;
87extern jmethodID ni_ctrID;
88
89/* PlainSocketImpl fields */
90extern jfieldID psi_timeoutID;
91extern jfieldID psi_fdID;
92extern jfieldID psi_addressID;
93extern jfieldID psi_portID;
94extern jfieldID psi_localportID;
95
96/* Android-removed: DatagramSocket moved away from JNI */
97#if 0
98/* DatagramPacket fields */
99extern jfieldID dp_addressID;
100extern jfieldID dp_portID;
101extern jfieldID dp_bufID;
102extern jfieldID dp_offsetID;
103extern jfieldID dp_lengthID;
104extern jfieldID dp_bufLengthID;
105#endif
106
107/* Inet6Address fields */
108extern jclass ia6_class;
109extern jfieldID ia6_holder6ID;
110extern jfieldID ia6_ipaddressID;
111extern jfieldID ia6_scopeidID;
112extern jfieldID ia6_scopeidsetID;
113extern jfieldID ia6_scopeifnameID;
114extern jmethodID ia6_ctrID;
115
116/************************************************************************
117 *  Utilities
118 */
119
120JNIEXPORT void JNICALL NET_ThrowNew(JNIEnv *env, int errorNum, char *msg);
121int NET_GetError();
122
123void NET_ThrowCurrent(JNIEnv *env, char *msg);
124
125jfieldID NET_GetFileDescriptorID(JNIEnv *env);
126
127JNIEXPORT jint JNICALL ipv6_available();
128
129void
130NET_AllocSockaddr(struct sockaddr **him, int *len);
131
132JNIEXPORT int JNICALL
133NET_InetAddressToSockaddr(JNIEnv *env, jobject iaObj, int port, struct sockaddr *him, int *len, jboolean v4MappedAddress);
134
135JNIEXPORT jobject JNICALL
136NET_SockaddrToInetAddress(JNIEnv *env, struct sockaddr *him, int *port);
137
138void initLocalAddrTable ();
139void parseExclusiveBindProperty(JNIEnv *env);
140
141void
142NET_SetTrafficClass(struct sockaddr *him, int trafficClass);
143
144JNIEXPORT jint JNICALL
145NET_GetPortFromSockaddr(struct sockaddr *him);
146
147JNIEXPORT jint JNICALL
148NET_SockaddrEqualsInetAddress(JNIEnv *env,struct sockaddr *him, jobject iaObj);
149
150int
151NET_IsIPv4Mapped(jbyte* caddr);
152
153int
154NET_IPv4MappedToIPv4(jbyte* caddr);
155
156int
157NET_IsEqual(jbyte* caddr1, jbyte* caddr2);
158
159int
160NET_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
168JNIEXPORT int JNICALL
169NET_GetSockOpt(int fd, int level, int opt, void *result, int *len);
170
171JNIEXPORT int JNICALL
172NET_SetSockOpt(int fd, int level, int opt, const void *arg, int len);
173
174JNIEXPORT int JNICALL
175NET_Bind(int fd, struct sockaddr *him, int len);
176
177JNIEXPORT int JNICALL
178NET_MapSocketOption(jint cmd, int *level, int *optname);
179
180JNIEXPORT int JNICALL
181NET_MapSocketOptionV6(jint cmd, int *level, int *optname);
182
183int getScopeID (struct sockaddr *);
184
185int cmpScopeID (unsigned int, struct sockaddr *);
186
187unsigned short in_cksum(unsigned short *addr, int len);
188#endif /* NET_UTILS_H */
189