1 /*
2 * Copyright (c) 2003, 2017, 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
matchFamily(SOCKETADDRESS * sa)40 static int matchFamily(SOCKETADDRESS *sa) {
41 return (sa->sa.sa_family == (ipv6_available() ? AF_INET6 : AF_INET));
42 }
43
44 JNIEXPORT void JNICALL
Java_sun_nio_ch_InheritedChannel_initIDs(JNIEnv * env,jclass cla)45 Java_sun_nio_ch_InheritedChannel_initIDs(JNIEnv *env, jclass cla)
46 {
47 /* Initialize InetAddress IDs before later use of NET_XXX functions */
48 initInetAddressIDs(env);
49 }
50
51 JNIEXPORT jobject JNICALL
Java_sun_nio_ch_InheritedChannel_peerAddress0(JNIEnv * env,jclass cla,jint fd)52 Java_sun_nio_ch_InheritedChannel_peerAddress0(JNIEnv *env, jclass cla, jint fd)
53 {
54 SOCKETADDRESS sa;
55 socklen_t len = sizeof(SOCKETADDRESS);
56 jobject remote_ia = NULL;
57 jint remote_port;
58
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
65 return remote_ia;
66 }
67
68 JNIEXPORT jint JNICALL
Java_sun_nio_ch_InheritedChannel_peerPort0(JNIEnv * env,jclass cla,jint fd)69 Java_sun_nio_ch_InheritedChannel_peerPort0(JNIEnv *env, jclass cla, jint fd)
70 {
71 SOCKETADDRESS sa;
72 socklen_t len = sizeof(SOCKETADDRESS);
73 jint remote_port = -1;
74
75 if (getpeername(fd, &sa.sa, &len) == 0) {
76 if (matchFamily(&sa)) {
77 NET_SockaddrToInetAddress(env, &sa, (int *)&remote_port);
78 }
79 }
80
81 return remote_port;
82 }
83
84 JNIEXPORT jint JNICALL
Java_sun_nio_ch_InheritedChannel_soType0(JNIEnv * env,jclass cla,jint fd)85 Java_sun_nio_ch_InheritedChannel_soType0(JNIEnv *env, jclass cla, jint fd)
86 {
87 int sotype;
88 socklen_t arglen = sizeof(sotype);
89 if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (void *)&sotype, &arglen) == 0) {
90 if (sotype == SOCK_STREAM)
91 return sun_nio_ch_InheritedChannel_SOCK_STREAM;
92 if (sotype == SOCK_DGRAM)
93 return sun_nio_ch_InheritedChannel_SOCK_DGRAM;
94 }
95 return sun_nio_ch_InheritedChannel_UNKNOWN;
96 }
97
98 JNIEXPORT jint JNICALL
Java_sun_nio_ch_InheritedChannel_dup(JNIEnv * env,jclass cla,jint fd)99 Java_sun_nio_ch_InheritedChannel_dup(JNIEnv *env, jclass cla, jint fd)
100 {
101 int newfd = dup(fd);
102 if (newfd < 0) {
103 JNU_ThrowIOExceptionWithLastError(env, "dup failed");
104 }
105 return (jint)newfd;
106 }
107
108 JNIEXPORT void JNICALL
Java_sun_nio_ch_InheritedChannel_dup2(JNIEnv * env,jclass cla,jint fd,jint fd2)109 Java_sun_nio_ch_InheritedChannel_dup2(JNIEnv *env, jclass cla, jint fd, jint fd2)
110 {
111 if (dup2(fd, fd2) < 0) {
112 JNU_ThrowIOExceptionWithLastError(env, "dup2 failed");
113 }
114 }
115
116 JNIEXPORT jint JNICALL
Java_sun_nio_ch_InheritedChannel_open0(JNIEnv * env,jclass cla,jstring path,jint oflag)117 Java_sun_nio_ch_InheritedChannel_open0(JNIEnv *env, jclass cla, jstring path, jint oflag)
118 {
119 const char *str;
120 int oflag_actual;
121
122 /* convert to OS specific value */
123 switch (oflag) {
124 case sun_nio_ch_InheritedChannel_O_RDWR :
125 oflag_actual = O_RDWR;
126 break;
127 case sun_nio_ch_InheritedChannel_O_RDONLY :
128 oflag_actual = O_RDONLY;
129 break;
130 case sun_nio_ch_InheritedChannel_O_WRONLY :
131 oflag_actual = O_WRONLY;
132 break;
133 default :
134 JNU_ThrowInternalError(env, "Unrecognized file mode");
135 return -1;
136 }
137
138 str = JNU_GetStringPlatformChars(env, path, NULL);
139 if (str == NULL) {
140 return (jint)-1;
141 } else {
142 int fd = open(str, oflag_actual);
143 if (fd < 0) {
144 JNU_ThrowIOExceptionWithLastError(env, str);
145 }
146 JNU_ReleaseStringPlatformChars(env, path, str);
147 return (jint)fd;
148 }
149 }
150
151 JNIEXPORT void JNICALL
Java_sun_nio_ch_InheritedChannel_close0(JNIEnv * env,jclass cla,jint fd)152 Java_sun_nio_ch_InheritedChannel_close0(JNIEnv *env, jclass cla, jint fd)
153 {
154 if (close(fd) < 0) {
155 JNU_ThrowIOExceptionWithLastError(env, "close failed");
156 }
157 }
158