1 /*
2 * Copyright (c) 2003, 2008, 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 #include <stdlib.h>
27 #include <sys/types.h>
28 #include <sys/socket.h>
29 #include <unistd.h>
30 #include <fcntl.h>
31
32 #include "jni.h"
33
34 #include "jni.h"
35 #include "jni_util.h"
36 #include "net_util.h"
37
38 #include "sun_nio_ch_InheritedChannel.h"
39
40 static int matchFamily(struct sockaddr *sa) {
41 int family = sa->sa_family;
42 #ifdef AF_INET6
43 if (ipv6_available()) {
44 return (family == AF_INET6);
45 }
46 #endif
47 return (family == AF_INET);
48 }
49
50 JNIEXPORT void JNICALL
51 Java_sun_nio_ch_InheritedChannel_initIDs(JNIEnv *env, jclass cla)
52 {
53 /* Initialize InetAddress IDs before later use of NET_XXX functions */
54 initInetAddressIDs(env);
55 }
56
57 JNIEXPORT jobject JNICALL
58 Java_sun_nio_ch_InheritedChannel_peerAddress0(JNIEnv *env, jclass cla, jint fd)
59 {
60 struct sockaddr *sa;
61 socklen_t sa_len;
62 jobject remote_ia = NULL;
63 jint remote_port;
64
65 NET_AllocSockaddr(&sa, (int *)&sa_len);
66 if (getpeername(fd, sa, &sa_len) == 0) {
67 if (matchFamily(sa)) {
68 remote_ia = NET_SockaddrToInetAddress(env, sa, (int *)&remote_port);
69 }
70 }
71 free((void *)sa);
72
73 return remote_ia;
74 }
75
76
77 JNIEXPORT jint JNICALL
78 Java_sun_nio_ch_InheritedChannel_peerPort0(JNIEnv *env, jclass cla, jint fd)
79 {
80 struct sockaddr *sa;
81 socklen_t sa_len;
82 jint remote_port = -1;
83
84 NET_AllocSockaddr(&sa, (int *)&sa_len);
85 if (getpeername(fd, sa, &sa_len) == 0) {
86 if (matchFamily(sa)) {
87 NET_SockaddrToInetAddress(env, sa, (int *)&remote_port);
88 }
89 }
90 free((void *)sa);
91
92 return remote_port;
93 }
94
95 JNIEXPORT jint JNICALL
96 Java_sun_nio_ch_InheritedChannel_soType0(JNIEnv *env, jclass cla, jint fd)
97 {
98 int sotype;
99 socklen_t arglen=sizeof(sotype);
100 if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (void *)&sotype, &arglen) == 0) {
101 if (sotype == SOCK_STREAM)
102 return sun_nio_ch_InheritedChannel_SOCK_STREAM;
103 if (sotype == SOCK_DGRAM)
104 return sun_nio_ch_InheritedChannel_SOCK_DGRAM;
105 }
106 return sun_nio_ch_InheritedChannel_UNKNOWN;
107 }
108
109 JNIEXPORT jint JNICALL
110 Java_sun_nio_ch_InheritedChannel_dup(JNIEnv *env, jclass cla, jint fd)
111 {
112 int newfd = dup(fd);
113 if (newfd < 0) {
114 JNU_ThrowIOExceptionWithLastError(env, "dup failed");
115 }
116 return (jint)newfd;
117 }
118
119 JNIEXPORT void JNICALL
120 Java_sun_nio_ch_InheritedChannel_dup2(JNIEnv *env, jclass cla, jint fd, jint fd2)
121 {
122 if (dup2(fd, fd2) < 0) {
123 JNU_ThrowIOExceptionWithLastError(env, "dup2 failed");
124 }
125 }
126
127 JNIEXPORT jint JNICALL
128 Java_sun_nio_ch_InheritedChannel_open0(JNIEnv *env, jclass cla, jstring path, jint oflag)
129 {
130 const char* str;
131 int oflag_actual;
132
133 /* convert to OS specific value */
134 switch (oflag) {
135 case sun_nio_ch_InheritedChannel_O_RDWR :
136 oflag_actual = O_RDWR;
137 break;
138 case sun_nio_ch_InheritedChannel_O_RDONLY :
139 oflag_actual = O_RDONLY;
140 break;
141 case sun_nio_ch_InheritedChannel_O_WRONLY :
142 oflag_actual = O_WRONLY;
143 break;
144 default :
145 JNU_ThrowInternalError(env, "Unrecognized file mode");
146 return -1;
147 }
148
149 str = JNU_GetStringPlatformChars(env, path, NULL);
150 if (str == NULL) {
151 return (jint)-1;
152 } else {
153 int fd = open(str, oflag_actual);
154 if (fd < 0) {
155 JNU_ThrowIOExceptionWithLastError(env, str);
156 }
157 JNU_ReleaseStringPlatformChars(env, path, str);
158 return (jint)fd;
159 }
160 }
161
162 JNIEXPORT void JNICALL
163 Java_sun_nio_ch_InheritedChannel_close0(JNIEnv *env, jclass cla, jint fd)
164 {
165 if (close(fd) < 0) {
166 JNU_ThrowIOExceptionWithLastError(env, "close failed");
167 }
168 }