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 #include "JNIHelp.h" 41 42 #define NATIVE_METHOD(className, functionName, signature) \ 43 { #functionName, signature, (void*)(Java_sun_nio_ch_ ## className ## _ ## functionName) } 44 45 static int matchFamily(struct sockaddr *sa) { 46 int family = sa->sa_family; 47 #ifdef AF_INET6 48 if (ipv6_available()) { 49 return (family == AF_INET6); 50 } 51 #endif 52 return (family == AF_INET); 53 } 54 55 JNIEXPORT jobject JNICALL 56 Java_sun_nio_ch_InheritedChannel_peerAddress0(JNIEnv *env, jclass cla, jint fd) 57 { 58 struct sockaddr *sa; 59 socklen_t sa_len; 60 jobject remote_ia = NULL; 61 jint remote_port; 62 63 NET_AllocSockaddr(&sa, (int *)&sa_len); 64 if (getpeername(fd, sa, &sa_len) == 0) { 65 if (matchFamily(sa)) { 66 remote_ia = NET_SockaddrToInetAddress(env, sa, (int *)&remote_port); 67 } 68 } 69 free((void *)sa); 70 71 return remote_ia; 72 } 73 74 75 JNIEXPORT jint JNICALL 76 Java_sun_nio_ch_InheritedChannel_peerPort0(JNIEnv *env, jclass cla, jint fd) 77 { 78 struct sockaddr *sa; 79 socklen_t sa_len; 80 jint remote_port = -1; 81 82 NET_AllocSockaddr(&sa, (int *)&sa_len); 83 if (getpeername(fd, sa, &sa_len) == 0) { 84 if (matchFamily(sa)) { 85 NET_SockaddrToInetAddress(env, sa, (int *)&remote_port); 86 } 87 } 88 free((void *)sa); 89 90 return remote_port; 91 } 92 93 JNIEXPORT jint JNICALL 94 Java_sun_nio_ch_InheritedChannel_soType0(JNIEnv *env, jclass cla, jint fd) 95 { 96 int sotype; 97 socklen_t arglen=sizeof(sotype); 98 if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (void *)&sotype, &arglen) == 0) { 99 if (sotype == SOCK_STREAM) 100 return sun_nio_ch_InheritedChannel_SOCK_STREAM; 101 if (sotype == SOCK_DGRAM) 102 return sun_nio_ch_InheritedChannel_SOCK_DGRAM; 103 } 104 return sun_nio_ch_InheritedChannel_UNKNOWN; 105 } 106 107 JNIEXPORT jint JNICALL 108 Java_sun_nio_ch_InheritedChannel_dup(JNIEnv *env, jclass cla, jint fd) 109 { 110 int newfd = dup(fd); 111 if (newfd < 0) { 112 JNU_ThrowIOExceptionWithLastError(env, "dup failed"); 113 } 114 return (jint)newfd; 115 } 116 117 JNIEXPORT void JNICALL 118 Java_sun_nio_ch_InheritedChannel_dup2(JNIEnv *env, jclass cla, jint fd, jint fd2) 119 { 120 if (dup2(fd, fd2) < 0) { 121 JNU_ThrowIOExceptionWithLastError(env, "dup2 failed"); 122 } 123 } 124 125 JNIEXPORT jint JNICALL 126 Java_sun_nio_ch_InheritedChannel_open0(JNIEnv *env, jclass cla, jstring path, jint oflag) 127 { 128 const char* str; 129 int oflag_actual; 130 131 /* convert to OS specific value */ 132 switch (oflag) { 133 case sun_nio_ch_InheritedChannel_O_RDWR : 134 oflag_actual = O_RDWR; 135 break; 136 case sun_nio_ch_InheritedChannel_O_RDONLY : 137 oflag_actual = O_RDONLY; 138 break; 139 case sun_nio_ch_InheritedChannel_O_WRONLY : 140 oflag_actual = O_WRONLY; 141 break; 142 default : 143 JNU_ThrowInternalError(env, "Unrecognized file mode"); 144 return -1; 145 } 146 147 str = JNU_GetStringPlatformChars(env, path, NULL); 148 if (str == NULL) { 149 return (jint)-1; 150 } else { 151 int fd = open(str, oflag_actual); 152 if (fd < 0) { 153 JNU_ThrowIOExceptionWithLastError(env, str); 154 } 155 JNU_ReleaseStringPlatformChars(env, path, str); 156 return (jint)fd; 157 } 158 } 159 160 JNIEXPORT void JNICALL 161 Java_sun_nio_ch_InheritedChannel_close0(JNIEnv *env, jclass cla, jint fd) 162 { 163 if (close(fd) < 0) { 164 JNU_ThrowIOExceptionWithLastError(env, "close failed"); 165 } 166 } 167 168 static JNINativeMethod gMethods[] = { 169 NATIVE_METHOD(InheritedChannel, dup, "(I)I"), 170 NATIVE_METHOD(InheritedChannel, dup2, "(II)V"), 171 NATIVE_METHOD(InheritedChannel, open0, "(Ljava/lang/String;I)I"), 172 NATIVE_METHOD(InheritedChannel, close0, "(I)V"), 173 NATIVE_METHOD(InheritedChannel, soType0, "(I)I"), 174 NATIVE_METHOD(InheritedChannel, peerAddress0, "(I)Ljava/net/InetAddress;"), 175 NATIVE_METHOD(InheritedChannel, peerPort0, "(I)I"), 176 177 }; 178 179 void register_sun_nio_ch_InheritedChannel(JNIEnv* env) { 180 jniRegisterNativeMethods(env, "sun/nio/ch/InheritedChannel", gMethods, NELEM(gMethods)); 181 } 182
