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 }