518 lines
13 KiB
C
518 lines
13 KiB
C
/* gnu_java_net_local_LocalSocketImpl.c -- native local socket implementation.
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Copyright (C) 2006 Free Software Foundation, Inc.
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This file is a part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or (at
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your option) any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
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USA
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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#ifndef _GNU_SOURCE
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#define _GNU_SOURCE
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#endif
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#include "config.h"
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#include <gnu_java_net_local_LocalSocketImpl.h>
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#include <stddef.h>
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#include "local.h"
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#ifdef DEBUG
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#define TRACE(msg) fprintf (stderr, "%s(%s:%d) -- %s\n", __FUNCTION__, __FILE__, __LINE__, msg)
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#else
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#define TRACE(msg)
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#endif
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static void
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_throw (JNIEnv *env, const char *exception, const char *msg)
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{
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jclass _theclass = (*env)->FindClass (env, exception);
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TRACE("begin");
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if (!_theclass)
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{
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(*env)->FatalError (env, "exception class not found");
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}
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(*env)->ThrowNew (env, _theclass, msg);
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TRACE("end");
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}
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void
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Java_gnu_java_net_local_LocalSocketImpl_create (JNIEnv *env, jobject this, jboolean stream)
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{
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#ifdef ENABLE_LOCAL_SOCKETS
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jfieldID socket_fd, created;
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jclass clazz;
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jint fd = (jint) local_create ((int) stream);
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TRACE("begin");
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if (fd < 0)
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{
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_throw (env, "java/io/IOException", local_error ());
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return;
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}
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clazz = (*env)->GetObjectClass (env, this);
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socket_fd = (*env)->GetFieldID (env, clazz, "socket_fd", "I");
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if (!socket_fd)
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{
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return;
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}
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created = (*env)->GetFieldID (env, clazz, "created", "Z");
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if (!created)
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{
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return;
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}
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(*env)->SetIntField (env, this, socket_fd, fd);
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(*env)->SetBooleanField (env, this, created, JNI_TRUE);
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TRACE("end");
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#else
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(void) this;
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(void) stream;
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_throw (env, "java/lang/Error", "support for local sockets not available");
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#endif /* ENABLE_LOCAL_SOCKETS */
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}
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void
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Java_gnu_java_net_local_LocalSocketImpl_listen (JNIEnv *env, jobject this, jint backlog)
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{
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#ifdef ENABLE_LOCAL_SOCKETS
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jfieldID socket_fd;
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jclass clazz;
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int fd;
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TRACE("begin");
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clazz = (*env)->GetObjectClass (env, this);
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socket_fd = (*env)->GetFieldID (env, clazz, "socket_fd", "I");
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if (!socket_fd)
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{
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return;
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}
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fd = (int) (*env)->GetIntField (env, this, socket_fd);
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if (local_listen (fd, (int) backlog))
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{
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_throw (env, "java/io/IOException", local_error ());
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return;
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}
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TRACE("end");
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#else
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(void) this;
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(void) backlog;
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_throw (env, "java/lang/Error", "support for local sockets not available");
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#endif /* ENABLE_LOCAL_SOCKETS */
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}
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void
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Java_gnu_java_net_local_LocalSocketImpl_accept (JNIEnv *env, jobject this, jobject socket)
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{
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#ifdef ENABLE_LOCAL_SOCKETS
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jmethodID addr_init;
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jfieldID socket_fd, remote_addr, local_addr;
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jclass clazz1, clazz2;
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jobject remote, local;
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jint fd;
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char path[108];
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TRACE("begin");
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clazz1 = (*env)->GetObjectClass (env, this);
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socket_fd = (*env)->GetFieldID (env, clazz1, "socket_fd", "I");
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if (!socket_fd)
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{
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return;
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}
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fd = (*env)->GetIntField (env, this, socket_fd);
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fd = (jint) local_accept ((int) fd, path);
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if (fd < 0)
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{
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_throw (env, "java/io/IOException", local_error ());
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return;
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}
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clazz2 = (*env)->FindClass (env, "gnu/java/net/local/LocalSocketAddress");
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if (!clazz2)
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{
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return;
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}
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addr_init = (*env)->GetMethodID (env, clazz2, "<init>", "(Ljava/lang/String;)V");
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if (!addr_init)
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{
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return;
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}
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remote = (*env)->NewObject (env, clazz2, addr_init, (*env)->NewStringUTF (env, path));
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remote_addr = (*env)->GetFieldID (env, clazz1, "remote", "Lgnu/java/net/local/LocalSocketAddress;");
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if (!remote_addr)
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{
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return;
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}
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local_addr = (*env)->GetFieldID (env, clazz1, "local", "Lgnu/java/net/local/LocalSocketAddress;");
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if (!local_addr)
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{
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return;
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}
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local = (*env)->GetObjectField (env, this, local_addr);
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(*env)->SetIntField (env, socket, socket_fd, fd);
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(*env)->SetObjectField (env, socket, remote_addr, remote);
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(*env)->SetObjectField (env, socket, local_addr, local);
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TRACE("end");
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#else
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(void) this;
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(void) socket;
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_throw (env, "java/lang/Error", "support for local sockets not available");
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#endif /* ENABLE_LOCAL_SOCKETS */
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}
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jint
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Java_gnu_java_net_local_LocalSocketImpl_available
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(JNIEnv *env, jobject this __attribute__((unused)), jint fd)
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{
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#ifdef ENABLE_LOCAL_SOCKETS
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jint avail;
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TRACE("begin");
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avail = (jint) local_available (fd);
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if (avail < 0)
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{
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_throw (env, "java/io/IOException", local_error ());
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return 0;
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}
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TRACE("end");
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return avail;
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#else
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(void) this;
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(void) fd;
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_throw (env, "java/lang/Error", "support for local sockets not available");
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return -1;
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#endif /* ENABLE_LOCAL_SOCKETS */
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}
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void
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Java_gnu_java_net_local_LocalSocketImpl_close (JNIEnv *env, jobject this)
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{
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#ifdef ENABLE_LOCAL_SOCKETS
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jfieldID socket_fd;
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jclass clazz;
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int fd;
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TRACE("begin");
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clazz = (*env)->GetObjectClass (env, this);
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socket_fd = (*env)->GetFieldID (env, clazz, "socket_fd", "I");
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if (!socket_fd)
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{
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return;
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}
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fd = (int) (*env)->GetIntField (env, this, socket_fd);
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if (local_close (fd))
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{
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_throw (env, "java/io/IOException", local_error ());
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}
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TRACE("end");
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#else
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(void) this;
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_throw (env, "java/lang/Error", "support for local sockets not available");
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#endif /* ENABLE_LOCAL_SOCKETS */
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}
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void
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Java_gnu_java_net_local_LocalSocketImpl_unlink (JNIEnv *env, jobject this)
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{
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#ifdef ENABLE_LOCAL_SOCKETS
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jfieldID local;
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jmethodID get_path;
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jclass clazz1, clazz2;
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jobject local_ref, path;
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char *addr_path;
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TRACE("begin");
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clazz1 = (*env)->GetObjectClass (env, this);
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local = (*env)->GetFieldID (env, clazz1, "local", "Lgnu/java/net/local/LocalSocketAddress;");
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if (!local)
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{
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return;
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}
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local_ref = (*env)->GetObjectField (env, this, local);
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clazz2 = (*env)->GetObjectClass (env, local_ref);
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get_path = (*env)->GetMethodID (env, clazz2, "getPath", "()Ljava/lang/String;");
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if (!get_path)
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{
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return;
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}
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path = (*env)->CallObjectMethod (env, local_ref, get_path);
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addr_path = (char *) (*env)->GetStringUTFChars (env, (jstring) path, NULL);
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if (local_unlink (addr_path))
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{
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_throw (env, "java/io/IOException", local_error ());
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}
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(*env)->ReleaseStringUTFChars (env, (jstring) path, addr_path);
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TRACE("end");
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#else
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(void) this;
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_throw (env, "java/lang/Error", "support for local sockets not available");
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#endif /* ENABLE_LOCAL_SOCKETS */
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}
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void
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Java_gnu_java_net_local_LocalSocketImpl_sendUrgentData (JNIEnv *env, jobject this __attribute__((unused)), jint data __attribute__((unused)))
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{
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/* XXX I don't remember why I have this. Probably should just
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remove. */
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(*env)->FatalError (env, "Java_gnu_java_net_local_LocalSocketImpl_shutdownInput (JNIEnv *env, jobject) not implemented");
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}
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void
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Java_gnu_java_net_local_LocalSocketImpl_shutdownInput (JNIEnv *env, jobject this)
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{
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#ifdef ENABLE_LOCAL_SOCKETS
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jfieldID socket_fd;
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jclass clazz;
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int fd;
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TRACE("begin");
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clazz = (*env)->GetObjectClass (env, this);
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socket_fd = (*env)->GetFieldID (env, clazz, "socket_fd", "I");
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if (!socket_fd)
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{
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return;
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}
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fd = (*env)->GetIntField (env, this, socket_fd);
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if (local_shutdown_input (fd))
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{
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_throw (env, "java/io/IOException", local_error ());
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}
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TRACE("end");
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#else
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(void) this;
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_throw (env, "java/lang/Error", "support for local sockets not available");
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#endif /* ENABLE_LOCAL_SOCKETS */
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}
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void
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Java_gnu_java_net_local_LocalSocketImpl_shutdownOutput (JNIEnv *env, jobject this)
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{
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#ifdef ENABLE_LOCAL_SOCKETS
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jfieldID socket_fd;
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jclass clazz;
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int fd;
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TRACE("begin");
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clazz = (*env)->GetObjectClass (env, this);
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socket_fd = (*env)->GetFieldID (env, clazz, "socket_fd", "I");
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if (!socket_fd)
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{
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return;
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}
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fd = (*env)->GetIntField (env, this, socket_fd);
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if (local_shutdown_output (fd))
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{
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_throw (env, "java/io/IOException", local_error ());
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}
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TRACE("end");
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#else
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(void) this;
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_throw (env, "java/lang/Error", "support for local sockets not available");
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#endif /* ENABLE_LOCAL_SOCKETS */
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}
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void
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Java_gnu_java_net_local_LocalSocketImpl_localBind (JNIEnv *env, jobject this, jobject address)
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{
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#ifdef ENABLE_LOCAL_SOCKETS
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jfieldID socket_fd;
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jmethodID get_path;
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jobject path;
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jclass clazz1, clazz2;
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const char *addr_path;
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int fd;
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TRACE("begin");
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clazz1 = (*env)->GetObjectClass (env, this);
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socket_fd = (*env)->GetFieldID (env, clazz1, "socket_fd", "I");
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if (!socket_fd)
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{
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return;
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}
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fd = (int) (*env)->GetIntField (env, this, socket_fd);
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clazz2 = (*env)->GetObjectClass (env, address);
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get_path = (*env)->GetMethodID (env, clazz2, "getPath", "()Ljava/lang/String;");
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path = (*env)->CallObjectMethod (env, address, get_path);
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addr_path = (*env)->GetStringUTFChars (env, (jstring) path, NULL);
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if (local_bind (fd, addr_path))
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{
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_throw (env, "java/io/IOException", local_error ());
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}
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(*env)->ReleaseStringUTFChars (env, (jstring) path, addr_path);
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TRACE("end");
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#else
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(void) this;
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(void) address;
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_throw (env, "java/lang/Error", "support for local sockets not available");
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#endif /* ENABLE_LOCAL_SOCKETS */
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}
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void
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Java_gnu_java_net_local_LocalSocketImpl_localConnect (JNIEnv *env, jobject this, jobject address)
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{
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#ifdef ENABLE_LOCAL_SOCKETS
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jfieldID socket_fd;
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jmethodID get_path;
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jobject path;
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jclass clazz1, clazz2;
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char *addr_path;
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int fd;
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TRACE("begin");
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clazz1 = (*env)->GetObjectClass (env, this);
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socket_fd = (*env)->GetFieldID (env, clazz1, "socket_fd", "I");
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if (!socket_fd)
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{
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return;
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}
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fd = (int) (*env)->GetIntField (env, this, socket_fd);
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clazz2 = (*env)->GetObjectClass (env, address);
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get_path = (*env)->GetMethodID (env, clazz2, "getPath", "()Ljava/lang/String;");
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path = (*env)->CallObjectMethod (env, address, get_path);
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addr_path = (char *) (*env)->GetStringUTFChars (env, (jstring) path, NULL);
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if (local_connect (fd, addr_path))
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{
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_throw (env, "java/io/IOException", local_error ());
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}
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(*env)->ReleaseStringUTFChars (env, (jstring) path, addr_path);
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TRACE("end");
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#else
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(void) this;
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(void) address;
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_throw (env, "java/lang/Error", "support for local sockets not available");
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#endif /* ENABLE_LOCAL_SOCKETS */
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}
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jint
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Java_gnu_java_net_local_LocalSocketImpl_read
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(JNIEnv *env, jobject this __attribute__((unused)), jint fd, jbyteArray buf,
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jint off, jint len)
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{
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#ifdef ENABLE_LOCAL_SOCKETS
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jbyte *buffer;
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jint count;
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TRACE("begin");
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if (off < 0 || len < 0 || off + len > (*env)->GetArrayLength (env, buf))
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{
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_throw (env, "java/lang/ArrayIndexOutOfBoundsException", "");
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}
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buffer = (*env)->GetByteArrayElements (env, buf, NULL);
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count = (jint) local_read (fd, (void *) (buffer + off), (int) len);
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if (count < 0)
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{
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_throw (env, "java/io/IOException", local_error ());
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}
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(*env)->ReleaseByteArrayElements (env, buf, buffer, 0);
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TRACE("end");
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return count;
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#else
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(void) this;
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(void) fd;
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(void) buf;
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(void) off;
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(void) len;
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_throw (env, "java/lang/Error", "support for local sockets not available");
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return -1;
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#endif /* ENABLE_LOCAL_SOCKETS */
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}
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void
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Java_gnu_java_net_local_LocalSocketImpl_write
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(JNIEnv *env, jobject this __attribute__((unused)), jint fd, jbyteArray buf,
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jint off, jint len)
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{
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#ifdef ENABLE_LOCAL_SOCKETS
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jbyte *buffer;
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TRACE("begin");
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if (off < 0 || len < 0 || off + len > (*env)->GetArrayLength (env, buf))
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{
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_throw (env, "java/lang/ArrayIndexOutOfBoundsException", "");
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}
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buffer = (*env)->GetByteArrayElements (env, buf, NULL);
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if (local_write (fd, (void *) (buffer + off), (int) len) < 0)
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{
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_throw (env, "java/io/IOException", local_error ());
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}
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(*env)->ReleaseByteArrayElements (env, buf, buffer, JNI_ABORT);
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TRACE("end");
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#else
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(void) this;
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(void) fd;
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(void) buf;
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(void) off;
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(void) len;
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_throw (env, "java/lang/Error", "support for local sockets not available");
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#endif /* ENABLE_LOCAL_SOCKETS */
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}
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