1 /*
2 * Copyright (c) 1997, 2013, 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 1
40 #define IPv6 2
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 JNIEXPORT void JNICALL initInetAddressIDs(JNIEnv *env);
59
60 /** (Inet6Address accessors)
61 * set_ methods return JNI_TRUE on success JNI_FALSE on error
62 * get_ methods that return int/boolean, return -1 on error
63 * get_ methods that return objects return NULL on error.
64 */
65 extern jobject getInet6Address_scopeifname(JNIEnv *env, jobject ia6Obj);
66 extern jboolean setInet6Address_scopeifname(JNIEnv *env, jobject ia6Obj, jobject scopeifname);
67 extern int getInet6Address_scopeid_set(JNIEnv *env, jobject ia6Obj);
68 extern int getInet6Address_scopeid(JNIEnv *env, jobject ia6Obj);
69 extern jboolean setInet6Address_scopeid(JNIEnv *env, jobject ia6Obj, int scopeid);
70 extern jboolean getInet6Address_ipaddress(JNIEnv *env, jobject ia6Obj, char *dest);
71 extern jboolean setInet6Address_ipaddress(JNIEnv *env, jobject ia6Obj, char *address);
72
73 extern void setInetAddress_addr(JNIEnv *env, jobject iaObj, int address);
74 extern void setInetAddress_family(JNIEnv *env, jobject iaObj, int family);
75 extern void setInetAddress_hostName(JNIEnv *env, jobject iaObj, jobject h);
76 extern int getInetAddress_addr(JNIEnv *env, jobject iaObj);
77 extern int getInetAddress_family(JNIEnv *env, jobject iaObj);
78 extern jobject getInetAddress_hostName(JNIEnv *env, jobject iaObj);
79
80 extern jclass ia4_class;
81 extern jmethodID ia4_ctrID;
82
83 /* NetworkInterface fields */
84 extern jclass ni_class;
85 extern jfieldID ni_nameID;
86 extern jfieldID ni_indexID;
87 extern jfieldID ni_addrsID;
88 extern jfieldID ni_descID;
89 extern jmethodID ni_ctrID;
90
91 /* PlainSocketImpl fields */
92 extern jfieldID psi_timeoutID;
93 extern jfieldID psi_fdID;
94 extern jfieldID psi_addressID;
95 extern jfieldID psi_portID;
96 extern jfieldID psi_localportID;
97
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
106 /* Inet6Address fields */
107 extern jclass ia6_class;
108 extern jfieldID ia6_holder6ID;
109 extern jfieldID ia6_ipaddressID;
110 extern jfieldID ia6_scopeidID;
111 extern jfieldID ia6_cachedscopeidID;
112 extern jfieldID ia6_scopeidsetID;
113 extern jfieldID ia6_scopeifnameID;
114 extern jmethodID ia6_ctrID;
115
116 /************************************************************************
117 * Utilities
118 */
119 JNIEXPORT void JNICALL Java_java_net_InetAddress_init(JNIEnv *env, jclass cls);
120 JNIEXPORT void JNICALL Java_java_net_Inet4Address_init(JNIEnv *env, jclass cls);
121 JNIEXPORT void JNICALL Java_java_net_Inet6Address_init(JNIEnv *env, jclass cls);
122 JNIEXPORT void JNICALL Java_java_net_NetworkInterface_init(JNIEnv *env, jclass cls);
123
124 JNIEXPORT void JNICALL NET_ThrowNew(JNIEnv *env, int errorNum, char *msg);
125 int NET_GetError();
126
127 void NET_ThrowCurrent(JNIEnv *env, char *msg);
128
129 jfieldID NET_GetFileDescriptorID(JNIEnv *env);
130
131 JNIEXPORT jint JNICALL ipv6_available() ;
132
133 void
134 NET_AllocSockaddr(struct sockaddr **him, int *len);
135
136 JNIEXPORT int JNICALL
137 NET_InetAddressToSockaddr(JNIEnv *env, jobject iaObj, int port, struct sockaddr *him, int *len, jboolean v4MappedAddress);
138
139 JNIEXPORT jobject JNICALL
140 NET_SockaddrToInetAddress(JNIEnv *env, struct sockaddr *him, int *port);
141
142 void platformInit();
143 void parseExclusiveBindProperty(JNIEnv *env);
144
145 void
146 NET_SetTrafficClass(struct sockaddr *him, int trafficClass);
147
148 JNIEXPORT jint JNICALL
149 NET_GetPortFromSockaddr(struct sockaddr *him);
150
151 JNIEXPORT jint JNICALL
152 NET_SockaddrEqualsInetAddress(JNIEnv *env,struct sockaddr *him, jobject iaObj);
153
154 int
155 NET_IsIPv4Mapped(jbyte* caddr);
156
157 int
158 NET_IPv4MappedToIPv4(jbyte* caddr);
159
160 int
161 NET_IsEqual(jbyte* caddr1, jbyte* caddr2);
162
163 int
164 NET_IsZeroAddr(jbyte* caddr);
165
166 /* Socket operations
167 *
168 * These work just like the system calls, except that they may do some
169 * platform-specific pre/post processing of the arguments and/or results.
170 */
171
172 JNIEXPORT int JNICALL
173 NET_GetSockOpt(int fd, int level, int opt, void *result, int *len);
174
175 JNIEXPORT int JNICALL
176 NET_SetSockOpt(int fd, int level, int opt, const void *arg, int len);
177
178 JNIEXPORT int JNICALL
179 NET_Bind(int fd, struct sockaddr *him, int len);
180
181 JNIEXPORT int JNICALL
182 NET_MapSocketOption(jint cmd, int *level, int *optname);
183
184 JNIEXPORT int JNICALL
185 NET_MapSocketOptionV6(jint cmd, int *level, int *optname);
186
187 int getScopeID (struct sockaddr *);
188
189 int cmpScopeID (unsigned int, struct sockaddr *);
190
191 unsigned short in_cksum(unsigned short *addr, int len);
192 #endif /* NET_UTILS_H */