/*

 * Copyright (c) 2003, 2019, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

#include <stdlib.h>

#include <sys/types.h>

#include <sys/socket.h>

#include <unistd.h>

#include <fcntl.h>

#include "jni.h"

#include "jni.h"

#include "jni_util.h"

#include "net_util.h"

#include "sun_nio_ch_InheritedChannel.h"

#include "java_nio_channels_UnixDomainSocketAddress.h"

static int matchFamilyInet(SOCKETADDRESS *sa) {

    return (sa->sa.sa_family == (ipv6_available() ? AF_INET6 : AF_INET));

}

JNIEXPORT void JNICALL

Java_sun_nio_ch_InheritedChannel_initIDs(JNIEnv *env, jclass cla)

{

    /* Initialize InetAddress IDs before later use of NET_XXX functions */

    initInetAddressIDs(env);

    /* Same for UnixDomainSocketAddress */

    Java_java_nio_channels_UnixDomainSocketAddress_init(env, NULL);

}

JNIEXPORT jobject JNICALL

Java_sun_nio_ch_InheritedChannel_peerAddressInet(JNIEnv *env, jclass cla, jint fd)

{

    SOCKETADDRESS sa;

    socklen_t len = sizeof(SOCKETADDRESS);

    jobject remote_ia = NULL;

    jint remote_port;

    if (getpeername(fd, &sa.sa, &len) == 0) {

        if (matchFamilyInet(&sa)) {

            remote_ia = NET_SockaddrToInetAddress(env, &sa, (int *)&remote_port);

        }

    }

    return remote_ia;

}

JNIEXPORT jobject JNICALL

Java_sun_nio_ch_InheritedChannel_peerAddressUnix(JNIEnv *env, jclass cla, jint fd)

{

    struct sockaddr_un sa;

    socklen_t len = sizeof(struct sockaddr_un);

    jobject remote_sa = NULL;

    if (getpeername(fd, (struct sockaddr *)&sa, &len) == 0) {

        if (sa.sun_family == AF_UNIX) {

        }

    }

    return remote_sa;

}

JNIEXPORT jint JNICALL

Java_sun_nio_ch_InheritedChannel_peerPort0(JNIEnv *env, jclass cla, jint fd)

{

    SOCKETADDRESS sa;

    socklen_t len = sizeof(SOCKETADDRESS);

    jint remote_port = -1;

    if (getpeername(fd, (struct sockaddr *)&sa.sa, &len) == 0) {

        if (matchFamilyInet(&sa)) {

            NET_SockaddrToInetAddress(env, &sa, (int *)&remote_port);

        }

    }

    return remote_port;

}

JNIEXPORT jint JNICALL

Java_sun_nio_ch_InheritedChannel_addressFamily(JNIEnv *env, jclass cla, jint fd)

{

    SOCKETADDRESS addr;

    socklen_t addrlen = sizeof(addr);

    if (getsockname(fd, (struct sockaddr *)&addr, &addrlen) < 0) {

        return sun_nio_ch_InheritedChannel_AF_UNKNOWN;

    }

    if (addr.sa.sa_family == AF_INET) {

        return sun_nio_ch_InheritedChannel_AF_INET;

    }

    if (addr.sa.sa_family == AF_INET6) {

        return sun_nio_ch_InheritedChannel_AF_INET6;

    }

    if (addr.sa.sa_family == AF_UNIX) {

        return sun_nio_ch_InheritedChannel_AF_UNIX;

    }

    return sun_nio_ch_InheritedChannel_AF_UNKNOWN;

}

JNIEXPORT jboolean JNICALL

Java_sun_nio_ch_InheritedChannel_isConnected(JNIEnv *env, jclass cla, jint fd)

{

    SOCKETADDRESS addr;

    socklen_t addrlen = sizeof(addr);

    if (getpeername(fd, (struct sockaddr *)&addr, &addrlen) < 0) {

        return JNI_FALSE;

    }

    return JNI_TRUE;

}

JNIEXPORT jint JNICALL

Java_sun_nio_ch_InheritedChannel_soType0(JNIEnv *env, jclass cla, jint fd)

{

    int sotype;

    socklen_t arglen = sizeof(sotype);

    if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (void *)&sotype, &arglen) == 0) {

        if (sotype == SOCK_STREAM)

            return sun_nio_ch_InheritedChannel_SOCK_STREAM;

        if (sotype == SOCK_DGRAM)

            return sun_nio_ch_InheritedChannel_SOCK_DGRAM;

    }

    return sun_nio_ch_InheritedChannel_UNKNOWN;

}

JNIEXPORT jint JNICALL

Java_sun_nio_ch_InheritedChannel_dup(JNIEnv *env, jclass cla, jint fd)

{

   int newfd = dup(fd);

   if (newfd < 0) {

        JNU_ThrowIOExceptionWithLastError(env, "dup failed");

   }

   return (jint)newfd;

}

JNIEXPORT void JNICALL

Java_sun_nio_ch_InheritedChannel_dup2(JNIEnv *env, jclass cla, jint fd, jint fd2)

{

   if (dup2(fd, fd2) < 0) {

        JNU_ThrowIOExceptionWithLastError(env, "dup2 failed");

   }

}

JNIEXPORT jint JNICALL

Java_sun_nio_ch_InheritedChannel_open0(JNIEnv *env, jclass cla, jstring path, jint oflag)

{

    const char *str;

    int oflag_actual;

    /* convert to OS specific value */

    switch (oflag) {

        case sun_nio_ch_InheritedChannel_O_RDWR :

            oflag_actual = O_RDWR;

            break;

        case sun_nio_ch_InheritedChannel_O_RDONLY :

            oflag_actual = O_RDONLY;

            break;

        case sun_nio_ch_InheritedChannel_O_WRONLY :

            oflag_actual = O_WRONLY;

            break;

        default :

            JNU_ThrowInternalError(env, "Unrecognized file mode");

            return -1;

    }

    str = JNU_GetStringPlatformChars(env, path, NULL);

    if (str == NULL) {

        return (jint)-1;

    } else {

        int fd = open(str, oflag_actual);

        if (fd < 0) {

            JNU_ThrowIOExceptionWithLastError(env, str);

        }

        JNU_ReleaseStringPlatformChars(env, path, str);

        return (jint)fd;

    }

}

JNIEXPORT void JNICALL

Java_sun_nio_ch_InheritedChannel_close0(JNIEnv *env, jclass cla, jint fd)

{

    if (close(fd) < 0) {

        JNU_ThrowIOExceptionWithLastError(env, "close failed");

    }

}