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 40 static int matchFamily(SOCKETADDRESS *sa) { 41 return (sa->sa.sa_family == (ipv6_available() ? AF_INET6 : AF_INET)); 42 } 43 44 JNIEXPORT void JNICALL 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 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 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 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 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 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 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 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 }