ildfly-client-all.34.0.0.Beta1.source-code.netty_unix_errors.c Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
/*
* Copyright 2015 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
#include
#include
#include
#include
#include "netty_unix_errors.h"
#include "netty_unix_jni.h"
#include "netty_unix_util.h"
#include "netty_jni_util.h"
#define ERRORS_CLASSNAME "io/netty/channel/unix/ErrorsStaticallyReferencedJniMethods"
static jweak channelExceptionClassWeak = NULL;
static jclass oomErrorClass = NULL;
static jclass runtimeExceptionClass = NULL;
static jclass ioExceptionClass = NULL;
static jclass portUnreachableExceptionClass = NULL;
static jclass closedChannelExceptionClass = NULL;
static jmethodID closedChannelExceptionMethodId = NULL;
/**
Our `strerror_r` wrapper makes sure that the function is XSI compliant,
even on platforms where the GNU variant is exposed.
Note: `strerrbuf` must be initialized to all zeros prior to calling this function.
XSI or GNU functions do not have such a requirement, but our wrappers do.
*/
#if (_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600 || __APPLE__) && ! _GNU_SOURCE
static inline int strerror_r_xsi(int errnum, char *strerrbuf, size_t buflen) {
return strerror_r(errnum, strerrbuf, buflen);
}
#else
static inline int strerror_r_xsi(int errnum, char *strerrbuf, size_t buflen) {
char* tmp = strerror_r(errnum, strerrbuf, buflen);
if (strerrbuf[0] == '\0') {
// Our output buffer was not used. Copy from tmp.
strncpy(strerrbuf, tmp, buflen - 1); // Use (buflen - 1) to avoid overwriting terminating \0.
}
if (errno != 0) {
return -1;
}
return 0;
}
#endif
/** Notice: every usage of exceptionMessage needs to release the allocated memory for the sequence of char */
static char* exceptionMessage(char* msg, int error) {
if (error < 0) {
// Error may be negative because some functions return negative values. We should make sure it is always
// positive when passing to standard library functions.
error = -error;
}
int buflen = 32;
char* strerrbuf = NULL;
int result = 0;
do {
buflen = buflen * 2;
if (buflen >= 2048) {
break; // Limit buffer growth.
}
if (strerrbuf != NULL) {
free(strerrbuf);
}
strerrbuf = calloc(buflen, sizeof(char));
result = strerror_r_xsi(error, strerrbuf, buflen);
if (result == -1) {
result = errno;
}
} while (result == ERANGE);
char* combined = netty_jni_util_prepend(msg, strerrbuf);
free(strerrbuf);
return combined;
}
// Exported C methods
void netty_unix_errors_throwRuntimeException(JNIEnv* env, char* message) {
(*env)->ThrowNew(env, runtimeExceptionClass, message);
}
void netty_unix_errors_throwRuntimeExceptionErrorNo(JNIEnv* env, char* message, int errorNumber) {
char* allocatedMessage = exceptionMessage(message, errorNumber);
if (allocatedMessage == NULL) {
return;
}
(*env)->ThrowNew(env, runtimeExceptionClass, allocatedMessage);
free(allocatedMessage);
}
void netty_unix_errors_throwChannelExceptionErrorNo(JNIEnv* env, char* message, int errorNumber) {
jclass channelExceptionClass = NULL;
char* allocatedMessage = exceptionMessage(message, errorNumber);
if (allocatedMessage == NULL) {
return;
}
NETTY_JNI_UTIL_NEW_LOCAL_FROM_WEAK(env, channelExceptionClass, channelExceptionClassWeak, done);
(*env)->ThrowNew(env, channelExceptionClass, allocatedMessage);
done:
NETTY_JNI_UTIL_DELETE_LOCAL(env, channelExceptionClass);
free(allocatedMessage);
}
void netty_unix_errors_throwIOException(JNIEnv* env, char* message) {
(*env)->ThrowNew(env, ioExceptionClass, message);
}
void netty_unix_errors_throwPortUnreachableException(JNIEnv* env, char* message) {
(*env)->ThrowNew(env, portUnreachableExceptionClass, message);
}
void netty_unix_errors_throwIOExceptionErrorNo(JNIEnv* env, char* message, int errorNumber) {
char* allocatedMessage = exceptionMessage(message, errorNumber);
if (allocatedMessage == NULL) {
return;
}
(*env)->ThrowNew(env, ioExceptionClass, allocatedMessage);
free(allocatedMessage);
}
void netty_unix_errors_throwClosedChannelException(JNIEnv* env) {
jobject exception = (*env)->NewObject(env, closedChannelExceptionClass, closedChannelExceptionMethodId);
if (exception == NULL) {
return;
}
(*env)->Throw(env, exception);
}
void netty_unix_errors_throwOutOfMemoryError(JNIEnv* env) {
(*env)->ThrowNew(env, oomErrorClass, "");
}
// JNI Registered Methods Begin
static jint netty_unix_errors_errnoENOENT(JNIEnv* env, jclass clazz) {
return ENOENT;
}
static jint netty_unix_errors_errnoENOTCONN(JNIEnv* env, jclass clazz) {
return ENOTCONN;
}
static jint netty_unix_errors_errnoEBADF(JNIEnv* env, jclass clazz) {
return EBADF;
}
static jint netty_unix_errors_errnoEPIPE(JNIEnv* env, jclass clazz) {
return EPIPE;
}
static jint netty_unix_errors_errnoECONNRESET(JNIEnv* env, jclass clazz) {
return ECONNRESET;
}
static jint netty_unix_errors_errnoEAGAIN(JNIEnv* env, jclass clazz) {
return EAGAIN;
}
static jint netty_unix_errors_errnoEWOULDBLOCK(JNIEnv* env, jclass clazz) {
return EWOULDBLOCK;
}
static jint netty_unix_errors_errnoEINPROGRESS(JNIEnv* env, jclass clazz) {
return EINPROGRESS;
}
static jint netty_unix_errors_errorECONNREFUSED(JNIEnv* env, jclass clazz) {
return ECONNREFUSED;
}
static jint netty_unix_errors_errorEISCONN(JNIEnv* env, jclass clazz) {
return EISCONN;
}
static jint netty_unix_errors_errorEALREADY(JNIEnv* env, jclass clazz) {
return EALREADY;
}
static jint netty_unix_errors_errorENETUNREACH(JNIEnv* env, jclass clazz) {
return ENETUNREACH;
}
static jint netty_unix_errors_errorEHOSTUNREACH(JNIEnv* env, jclass clazz) {
return EHOSTUNREACH;
}
static jstring netty_unix_errors_strError(JNIEnv* env, jclass clazz, jint error) {
return (*env)->NewStringUTF(env, strerror(error));
}
// JNI Registered Methods End
// JNI Method Registration Table Begin
static const JNINativeMethod statically_referenced_fixed_method_table[] = {
{ "errnoENOENT", "()I", (void *) netty_unix_errors_errnoENOENT },
{ "errnoENOTCONN", "()I", (void *) netty_unix_errors_errnoENOTCONN },
{ "errnoEBADF", "()I", (void *) netty_unix_errors_errnoEBADF },
{ "errnoEPIPE", "()I", (void *) netty_unix_errors_errnoEPIPE },
{ "errnoECONNRESET", "()I", (void *) netty_unix_errors_errnoECONNRESET },
{ "errnoEAGAIN", "()I", (void *) netty_unix_errors_errnoEAGAIN },
{ "errnoEWOULDBLOCK", "()I", (void *) netty_unix_errors_errnoEWOULDBLOCK },
{ "errnoEINPROGRESS", "()I", (void *) netty_unix_errors_errnoEINPROGRESS },
{ "errorECONNREFUSED", "()I", (void *) netty_unix_errors_errorECONNREFUSED },
{ "errorEISCONN", "()I", (void *) netty_unix_errors_errorEISCONN },
{ "errorEALREADY", "()I", (void *) netty_unix_errors_errorEALREADY },
{ "errorENETUNREACH", "()I", (void *) netty_unix_errors_errorENETUNREACH },
{ "errorEHOSTUNREACH", "()I", (void *) netty_unix_errors_errorEHOSTUNREACH },
{ "strError", "(I)Ljava/lang/String;", (void *) netty_unix_errors_strError }
};
static const jint statically_referenced_fixed_method_table_size = sizeof(statically_referenced_fixed_method_table) / sizeof(statically_referenced_fixed_method_table[0]);
// JNI Method Registration Table End
// IMPORTANT: If you add any NETTY_JNI_UTIL_LOAD_CLASS or NETTY_JNI_UTIL_FIND_CLASS calls you also need to update
// Unix to reflect that.
jint netty_unix_errors_JNI_OnLoad(JNIEnv* env, const char* packagePrefix) {
char* nettyClassName = NULL;
jclass channelExceptionClass = NULL;
// We must register the statically referenced methods first!
if (netty_jni_util_register_natives(env,
packagePrefix,
ERRORS_CLASSNAME,
statically_referenced_fixed_method_table,
statically_referenced_fixed_method_table_size) != 0) {
return JNI_ERR;
}
NETTY_JNI_UTIL_LOAD_CLASS(env, oomErrorClass, "java/lang/OutOfMemoryError", error);
NETTY_JNI_UTIL_LOAD_CLASS(env, runtimeExceptionClass, "java/lang/RuntimeException", error);
NETTY_JNI_UTIL_PREPEND(packagePrefix, "io/netty/channel/ChannelException", nettyClassName, error);
NETTY_JNI_UTIL_LOAD_CLASS_WEAK(env, channelExceptionClassWeak, nettyClassName, error);
NETTY_JNI_UTIL_NEW_LOCAL_FROM_WEAK(env, channelExceptionClass, channelExceptionClassWeak, error);
netty_jni_util_free_dynamic_name(&nettyClassName);
NETTY_JNI_UTIL_LOAD_CLASS(env, closedChannelExceptionClass, "java/nio/channels/ClosedChannelException", error);
NETTY_JNI_UTIL_GET_METHOD(env, closedChannelExceptionClass, closedChannelExceptionMethodId, "", "()V", error);
NETTY_JNI_UTIL_LOAD_CLASS(env, ioExceptionClass, "java/io/IOException", error);
NETTY_JNI_UTIL_LOAD_CLASS(env, portUnreachableExceptionClass, "java/net/PortUnreachableException", error);
NETTY_JNI_UTIL_DELETE_LOCAL(env, channelExceptionClass);
return NETTY_JNI_UTIL_JNI_VERSION;
error:
free(nettyClassName);
NETTY_JNI_UTIL_DELETE_LOCAL(env, channelExceptionClass);
return JNI_ERR;
}
void netty_unix_errors_JNI_OnUnLoad(JNIEnv* env, const char* packagePrefix) {
// delete global references so the GC can collect them
NETTY_JNI_UTIL_UNLOAD_CLASS(env, oomErrorClass);
NETTY_JNI_UTIL_UNLOAD_CLASS(env, runtimeExceptionClass);
NETTY_JNI_UTIL_UNLOAD_CLASS_WEAK(env, channelExceptionClassWeak);
NETTY_JNI_UTIL_UNLOAD_CLASS(env, ioExceptionClass);
NETTY_JNI_UTIL_UNLOAD_CLASS(env, portUnreachableExceptionClass);
NETTY_JNI_UTIL_UNLOAD_CLASS(env, closedChannelExceptionClass);
netty_jni_util_unregister_natives(env, packagePrefix, ERRORS_CLASSNAME);
}