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 jobject JNICALL
51 Java_sun_nio_ch_InheritedChannel_peerAddress0(JNIEnv *env, jclass cla, jint fd)
52 {
53 struct sockaddr *sa;
54 socklen_t sa_len;
55 jobject remote_ia = NULL;
56 jint remote_port;
57
58 NET_AllocSockaddr(&sa, (int *)&sa_len);
59 if (getpeername(fd, sa, &sa_len) == 0) {
60 if (matchFamily(sa)) {
61 remote_ia = NET_SockaddrToInetAddress(env, sa, (int *)&remote_port);
62 }
63 }
64 free((void *)sa);
65
66 return remote_ia;
67 }
68
69
70 JNIEXPORT jint JNICALL
71 Java_sun_nio_ch_InheritedChannel_peerPort0(JNIEnv *env, jclass cla, jint fd)
72 {
73 struct sockaddr *sa;
74 socklen_t sa_len;
75 jint remote_port = -1;
76
77 NET_AllocSockaddr(&sa, (int *)&sa_len);
78 if (getpeername(fd, sa, &sa_len) == 0) {
79 if (matchFamily(sa)) {
80 NET_SockaddrToInetAddress(env, sa, (int *)&remote_port);
81 }
82 }
83 free((void *)sa);
84
85 return remote_port;
86 }
87
88 JNIEXPORT jint JNICALL
89 Java_sun_nio_ch_InheritedChannel_soType0(JNIEnv *env, jclass cla, jint fd)
90 {
91 int sotype;
92 socklen_t arglen=sizeof(sotype);
93 if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (void *)&sotype, &arglen) == 0) {
94 if (sotype == SOCK_STREAM)
95 return sun_nio_ch_InheritedChannel_SOCK_STREAM;
96 if (sotype == SOCK_DGRAM)
97 return sun_nio_ch_InheritedChannel_SOCK_DGRAM;
98 }
99 return sun_nio_ch_InheritedChannel_UNKNOWN;
100 }
101
102 JNIEXPORT jint JNICALL
103 Java_sun_nio_ch_InheritedChannel_dup(JNIEnv *env, jclass cla, jint fd)
104 {
105 int newfd = dup(fd);
106 if (newfd < 0) {
107 JNU_ThrowIOExceptionWithLastError(env, "dup failed");
108 }
109 return (jint)newfd;
110 }
111
112 JNIEXPORT void JNICALL
113 Java_sun_nio_ch_InheritedChannel_dup2(JNIEnv *env, jclass cla, jint fd, jint fd2)
114 {
115 if (dup2(fd, fd2) < 0) {
116 JNU_ThrowIOExceptionWithLastError(env, "dup2 failed");
117 }
118 }
119
120 JNIEXPORT jint JNICALL
121 Java_sun_nio_ch_InheritedChannel_open0(JNIEnv *env, jclass cla, jstring path, jint oflag)
122 {
123 const char* str;
124 int oflag_actual;
125
126 /* convert to OS specific value */
127 switch (oflag) {
128 case sun_nio_ch_InheritedChannel_O_RDWR :
129 oflag_actual = O_RDWR;
130 break;
131 case sun_nio_ch_InheritedChannel_O_RDONLY :
132 oflag_actual = O_RDONLY;
133 break;
134 case sun_nio_ch_InheritedChannel_O_WRONLY :
135 oflag_actual = O_WRONLY;
136 break;
137 default :
138 JNU_ThrowInternalError(env, "Unrecognized file mode");
139 return -1;
140 }
141
142 str = JNU_GetStringPlatformChars(env, path, NULL);
143 if (str == NULL) {
144 return (jint)-1;
145 } else {
146 int fd = open(str, oflag_actual);
147 if (fd < 0) {
148 JNU_ThrowIOExceptionWithLastError(env, str);
149 }
150 JNU_ReleaseStringPlatformChars(env, path, str);
151 return (jint)fd;
152 }
153 }
154
155 JNIEXPORT void JNICALL
156 Java_sun_nio_ch_InheritedChannel_close0(JNIEnv *env, jclass cla, jint fd)
157 {
158 if (close(fd) < 0) {
159 JNU_ThrowIOExceptionWithLastError(env, "close failed");
160 }
161 }