| /* |
| * Copyright (c) 2014, 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 <jni.h> |
| #include <string.h> |
| |
| #include "net_util.h" |
| #include "jdk_net_SocketFlow.h" |
| |
| static jclass sf_status_class; /* Status enum type */ |
| |
| static jfieldID sf_status; |
| static jfieldID sf_priority; |
| static jfieldID sf_bandwidth; |
| |
| static jfieldID sf_fd_fdID; /* FileDescriptor.fd */ |
| |
| /* References to the literal enum values */ |
| |
| static jobject sfs_NOSTATUS; |
| static jobject sfs_OK; |
| static jobject sfs_NOPERMISSION; |
| static jobject sfs_NOTCONNECTED; |
| static jobject sfs_NOTSUPPORTED; |
| static jobject sfs_ALREADYCREATED; |
| static jobject sfs_INPROGRESS; |
| static jobject sfs_OTHER; |
| |
| static jobject getEnumField(JNIEnv *env, char *name); |
| static void setStatus(JNIEnv *env, jobject obj, int errval); |
| |
| /* OS specific code is implemented in these three functions */ |
| |
| static jboolean flowSupported0() ; |
| |
| /* |
| * Class: sun_net_ExtendedOptionsImpl |
| * Method: init |
| * Signature: ()V |
| */ |
| JNIEXPORT void JNICALL Java_sun_net_ExtendedOptionsImpl_init |
| (JNIEnv *env, jclass UNUSED) { |
| |
| static int initialized = 0; |
| jclass c; |
| |
| /* Global class references */ |
| |
| if (initialized) { |
| return; |
| } |
| |
| c = (*env)->FindClass(env, "jdk/net/SocketFlow$Status"); |
| CHECK_NULL(c); |
| sf_status_class = (*env)->NewGlobalRef(env, c); |
| CHECK_NULL(sf_status_class); |
| |
| /* int "fd" field of java.io.FileDescriptor */ |
| |
| c = (*env)->FindClass(env, "java/io/FileDescriptor"); |
| CHECK_NULL(c); |
| sf_fd_fdID = (*env)->GetFieldID(env, c, "fd", "I"); |
| CHECK_NULL(sf_fd_fdID); |
| |
| |
| /* SocketFlow fields */ |
| |
| c = (*env)->FindClass(env, "jdk/net/SocketFlow"); |
| |
| /* status */ |
| |
| sf_status = (*env)->GetFieldID(env, c, "status", |
| "Ljdk/net/SocketFlow$Status;"); |
| CHECK_NULL(sf_status); |
| |
| /* priority */ |
| |
| sf_priority = (*env)->GetFieldID(env, c, "priority", "I"); |
| CHECK_NULL(sf_priority); |
| |
| /* bandwidth */ |
| |
| sf_bandwidth = (*env)->GetFieldID(env, c, "bandwidth", "J"); |
| CHECK_NULL(sf_bandwidth); |
| |
| /* Initialize the static enum values */ |
| |
| sfs_NOSTATUS = getEnumField(env, "NO_STATUS"); |
| CHECK_NULL(sfs_NOSTATUS); |
| sfs_OK = getEnumField(env, "OK"); |
| CHECK_NULL(sfs_OK); |
| sfs_NOPERMISSION = getEnumField(env, "NO_PERMISSION"); |
| CHECK_NULL(sfs_NOPERMISSION); |
| sfs_NOTCONNECTED = getEnumField(env, "NOT_CONNECTED"); |
| CHECK_NULL(sfs_NOTCONNECTED); |
| sfs_NOTSUPPORTED = getEnumField(env, "NOT_SUPPORTED"); |
| CHECK_NULL(sfs_NOTSUPPORTED); |
| sfs_ALREADYCREATED = getEnumField(env, "ALREADY_CREATED"); |
| CHECK_NULL(sfs_ALREADYCREATED); |
| sfs_INPROGRESS = getEnumField(env, "IN_PROGRESS"); |
| CHECK_NULL(sfs_INPROGRESS); |
| sfs_OTHER = getEnumField(env, "OTHER"); |
| CHECK_NULL(sfs_OTHER); |
| initialized = JNI_TRUE; |
| } |
| |
| static jobject getEnumField(JNIEnv *env, char *name) { |
| jobject f; |
| jfieldID fID = (*env)->GetStaticFieldID(env, sf_status_class, name, |
| "Ljdk/net/SocketFlow$Status;"); |
| CHECK_NULL_RETURN(fID, NULL); |
| |
| f = (*env)->GetStaticObjectField(env, sf_status_class, fID); |
| CHECK_NULL_RETURN(f, NULL); |
| f = (*env)->NewGlobalRef(env, f); |
| CHECK_NULL_RETURN(f, NULL); |
| return f; |
| } |
| |
| /* |
| * Retrieve the int file-descriptor from a public socket type object. |
| * Gets impl, then the FileDescriptor from the impl, and then the fd |
| * from that. |
| */ |
| static int getFD(JNIEnv *env, jobject fileDesc) { |
| return (*env)->GetIntField(env, fileDesc, sf_fd_fdID); |
| } |
| |
| /** |
| * Sets the status field of a SocketFlow to one of the |
| * canned enum values |
| */ |
| static void setStatus (JNIEnv *env, jobject obj, int errval) { |
| switch (errval) { |
| case 0: /* OK */ |
| (*env)->SetObjectField(env, obj, sf_status, sfs_OK); |
| break; |
| case EPERM: |
| (*env)->SetObjectField(env, obj, sf_status, sfs_NOPERMISSION); |
| break; |
| case ENOTCONN: |
| (*env)->SetObjectField(env, obj, sf_status, sfs_NOTCONNECTED); |
| break; |
| case EOPNOTSUPP: |
| (*env)->SetObjectField(env, obj, sf_status, sfs_NOTSUPPORTED); |
| break; |
| case EALREADY: |
| (*env)->SetObjectField(env, obj, sf_status, sfs_ALREADYCREATED); |
| break; |
| case EINPROGRESS: |
| (*env)->SetObjectField(env, obj, sf_status, sfs_INPROGRESS); |
| break; |
| default: |
| (*env)->SetObjectField(env, obj, sf_status, sfs_OTHER); |
| break; |
| } |
| } |
| |
| #ifdef __solaris__ |
| |
| /* |
| * Class: sun_net_ExtendedOptionsImpl |
| * Method: setFlowOption |
| * Signature: (Ljava/io/FileDescriptor;Ljdk/net/SocketFlow;)V |
| */ |
| JNIEXPORT void JNICALL Java_sun_net_ExtendedOptionsImpl_setFlowOption |
| (JNIEnv *env, jclass UNUSED, jobject fileDesc, jobject flow) { |
| int fd = getFD(env, fileDesc); |
| |
| if (fd < 0) { |
| NET_ERROR(env, JNU_JAVANETPKG "SocketException", "socket closed"); |
| return; |
| } else { |
| sock_flow_props_t props; |
| jlong bandwidth; |
| int rv; |
| |
| jint priority = (*env)->GetIntField(env, flow, sf_priority); |
| memset(&props, 0, sizeof(props)); |
| props.sfp_version = SOCK_FLOW_PROP_VERSION1; |
| |
| if (priority != jdk_net_SocketFlow_UNSET) { |
| props.sfp_mask |= SFP_PRIORITY; |
| props.sfp_priority = priority; |
| } |
| bandwidth = (*env)->GetLongField(env, flow, sf_bandwidth); |
| if (bandwidth > -1) { |
| props.sfp_mask |= SFP_MAXBW; |
| props.sfp_maxbw = (uint64_t) bandwidth; |
| } |
| rv = setsockopt(fd, SOL_SOCKET, SO_FLOW_SLA, &props, sizeof(props)); |
| if (rv < 0) { |
| if (errno == ENOPROTOOPT) { |
| JNU_ThrowByName(env, "java/lang/UnsupportedOperationException", |
| "unsupported socket option"); |
| } else if (errno == EACCES || errno == EPERM) { |
| NET_ERROR(env, JNU_JAVANETPKG "SocketException", |
| "Permission denied"); |
| } else { |
| NET_ERROR(env, JNU_JAVANETPKG "SocketException", |
| "set option SO_FLOW_SLA failed"); |
| } |
| return; |
| } |
| setStatus(env, flow, props.sfp_status); |
| } |
| } |
| |
| /* |
| * Class: sun_net_ExtendedOptionsImpl |
| * Method: getFlowOption |
| * Signature: (Ljava/io/FileDescriptor;Ljdk/net/SocketFlow;)V |
| */ |
| JNIEXPORT void JNICALL Java_sun_net_ExtendedOptionsImpl_getFlowOption |
| (JNIEnv *env, jclass UNUSED, jobject fileDesc, jobject flow) { |
| int fd = getFD(env, fileDesc); |
| |
| if (fd < 0) { |
| NET_ERROR(env, JNU_JAVANETPKG "SocketException", "socket closed"); |
| return; |
| } else { |
| sock_flow_props_t props; |
| int status; |
| socklen_t sz = sizeof(props); |
| |
| int rv = getsockopt(fd, SOL_SOCKET, SO_FLOW_SLA, &props, &sz); |
| if (rv < 0) { |
| if (errno == ENOPROTOOPT) { |
| JNU_ThrowByName(env, "java/lang/UnsupportedOperationException", |
| "unsupported socket option"); |
| } else if (errno == EACCES || errno == EPERM) { |
| NET_ERROR(env, JNU_JAVANETPKG "SocketException", |
| "Permission denied"); |
| } else { |
| NET_ERROR(env, JNU_JAVANETPKG "SocketException", |
| "set option SO_FLOW_SLA failed"); |
| } |
| return; |
| } |
| /* first check status to see if flow exists */ |
| status = props.sfp_status; |
| setStatus(env, flow, status); |
| if (status == 0) { /* OK */ |
| /* can set the other fields now */ |
| if (props.sfp_mask & SFP_PRIORITY) { |
| (*env)->SetIntField(env, flow, sf_priority, props.sfp_priority); |
| } |
| if (props.sfp_mask & SFP_MAXBW) { |
| (*env)->SetLongField(env, flow, sf_bandwidth, |
| (jlong)props.sfp_maxbw); |
| } |
| } |
| } |
| } |
| |
| static jboolean flowsupported; |
| static jboolean flowsupported_set = JNI_FALSE; |
| |
| static jboolean flowSupported0() { |
| /* Do a simple dummy call, and try to figure out from that */ |
| sock_flow_props_t props; |
| int rv, s; |
| if (flowsupported_set) { |
| return flowsupported; |
| } |
| s = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP); |
| if (s < 0) { |
| flowsupported = JNI_FALSE; |
| flowsupported_set = JNI_TRUE; |
| return JNI_FALSE; |
| } |
| memset(&props, 0, sizeof(props)); |
| props.sfp_version = SOCK_FLOW_PROP_VERSION1; |
| props.sfp_mask |= SFP_PRIORITY; |
| props.sfp_priority = SFP_PRIO_NORMAL; |
| rv = setsockopt(s, SOL_SOCKET, SO_FLOW_SLA, &props, sizeof(props)); |
| if (rv != 0 && errno == ENOPROTOOPT) { |
| rv = JNI_FALSE; |
| } else { |
| rv = JNI_TRUE; |
| } |
| close(s); |
| flowsupported = rv; |
| flowsupported_set = JNI_TRUE; |
| return flowsupported; |
| } |
| |
| #else /* __solaris__ */ |
| |
| /* Non Solaris. Functionality is not supported. So, throw UnsupportedOpExc */ |
| |
| JNIEXPORT void JNICALL Java_sun_net_ExtendedOptionsImpl_setFlowOption |
| (JNIEnv *env, jclass UNUSED, jobject fileDesc, jobject flow) { |
| JNU_ThrowByName(env, "java/lang/UnsupportedOperationException", |
| "unsupported socket option"); |
| } |
| |
| JNIEXPORT void JNICALL Java_sun_net_ExtendedOptionsImpl_getFlowOption |
| (JNIEnv *env, jclass UNUSED, jobject fileDesc, jobject flow) { |
| JNU_ThrowByName(env, "java/lang/UnsupportedOperationException", |
| "unsupported socket option"); |
| } |
| |
| static jboolean flowSupported0() { |
| return JNI_FALSE; |
| } |
| |
| #endif /* __solaris__ */ |
| |
| JNIEXPORT jboolean JNICALL Java_sun_net_ExtendedOptionsImpl_flowSupported |
| (JNIEnv *env, jclass UNUSED) { |
| return flowSupported0(); |
| } |