diff options
Diffstat (limited to 'libjava/classpath/native/jni/java-net/java_net_VMInetAddress.c')
| -rw-r--r-- | libjava/classpath/native/jni/java-net/java_net_VMInetAddress.c | 395 |
1 files changed, 395 insertions, 0 deletions
diff --git a/libjava/classpath/native/jni/java-net/java_net_VMInetAddress.c b/libjava/classpath/native/jni/java-net/java_net_VMInetAddress.c new file mode 100644 index 000000000..6ee7773b8 --- /dev/null +++ b/libjava/classpath/native/jni/java-net/java_net_VMInetAddress.c @@ -0,0 +1,395 @@ +/* VMInetAddress.c - Native methods for InetAddress class + Copyright (C) 1998, 2002, 2005, 2006 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +/* do not move; needed here because of some macro definitions */ +#include <config.h> + +#include <stdlib.h> +#include <stdio.h> +#include <string.h> + +#include <jni.h> +#include <jcl.h> + +#include "cpnative.h" +#include "cpnet.h" +#include "javanet.h" + +#include "java_net_VMInetAddress.h" + +/*************************************************************************/ + +/* + * Function to return the local hostname + */ +JNIEXPORT jstring JNICALL +Java_java_net_VMInetAddress_getLocalHostname (JNIEnv * env, + jclass class + __attribute__ ((__unused__))) +{ + char hostname[256]; + int result; + jstring retval; + +#ifndef WITHOUT_NETWORK + result = cpnet_getHostname (env, hostname, sizeof (hostname)); + if (result != CPNATIVE_OK) + { + strcpy (hostname, "localhost"); + } +#else /* not WITHOUT_NETWORK */ + strcpy (hostname, "localhost"); +#endif /* not WITHOUT_NETWORK */ + + retval = (*env)->NewStringUTF (env, hostname); + + return (retval); +} + +/*************************************************************************/ + +/* + * Returns the value of the special IP address INADDR_ANY + */ +JNIEXPORT jarray JNICALL +Java_java_net_VMInetAddress_lookupInaddrAny (JNIEnv * env, + jclass class + __attribute__ ((__unused__))) +{ + jarray IParray; + cpnet_address *addr; + jbyte *octets; + + /* Allocate an array for the IP address */ + IParray = (*env)->NewByteArray (env, 4); + if (IParray == NULL) + { + JCL_ThrowException (env, UNKNOWN_HOST_EXCEPTION, "Internal Error"); + return (jarray) NULL; + } + + /* Copy in the values */ + octets = (*env)->GetByteArrayElements (env, IParray, 0); + +#ifndef WITHOUT_NETWORK + addr = cpnet_newIPV4Address (env); + cpnet_setIPV4Any (addr); + cpnet_IPV4AddressToBytes (addr, octets); + cpnet_freeAddress (env, addr); +#else /* not WITHOUT_NETWORK */ + octets[0] = 0; + octets[1] = 0; + octets[2] = 0; + octets[3] = 0; +#endif /* not WITHOUT_NETWORK */ + + (*env)->ReleaseByteArrayElements (env, IParray, octets, 0); + + return (IParray); +} + +/*************************************************************************/ + +/* + * Function to return the canonical hostname for a given IP address passed + * in as a byte array + */ +JNIEXPORT jstring JNICALL +Java_java_net_VMInetAddress_getHostByAddr (JNIEnv * env, + jclass class + __attribute__ ((__unused__)), + jarray arr) +{ +#ifndef WITHOUT_NETWORK + jbyte *octets; + jsize len; + cpnet_address *addr; + char hostname[255]; + int result; + jstring retval; + + /* Grab the byte[] array with the IP out of the input data */ + len = (*env)->GetArrayLength (env, arr); + if (len != 4 && len != 16) + { + JCL_ThrowException (env, UNKNOWN_HOST_EXCEPTION, "Bad IP Address"); + return (jstring) NULL; + } + + octets = (*env)->GetByteArrayElements (env, arr, 0); + if (!octets) + { + JCL_ThrowException (env, UNKNOWN_HOST_EXCEPTION, "Bad IP Address"); + return (jstring) NULL; + } + + switch (len) + { + case 4: + addr = cpnet_newIPV4Address(env); + cpnet_bytesToIPV4Address (addr, octets); + break; +#ifdef HAVE_INET6 + case 16: + addr = cpnet_newIPV6Address(env); + cpnet_bytesToIPV6Address (addr, octets); + break; +#endif + default: + JCL_ThrowException (env, UNKNOWN_HOST_EXCEPTION, "Bad IP Address"); + return (jstring) NULL; + + } + + /* Release some memory */ + (*env)->ReleaseByteArrayElements (env, arr, octets, 0); + + /* Resolve the address and return the name */ + result = cpnet_getHostByAddr (env, addr, hostname, sizeof (hostname)); + if (result != CPNATIVE_OK) + { + JCL_ThrowException (env, UNKNOWN_HOST_EXCEPTION, + cpnative_getErrorString (result)); + return (jstring) NULL; + } + + retval = (*env)->NewStringUTF (env, hostname); + + return (retval); +#else /* not WITHOUT_NETWORK */ + return (jstring) NULL; +#endif /* not WITHOUT_NETWORK */ +} + +/*************************************************************************/ + +JNIEXPORT jobjectArray JNICALL +Java_java_net_VMInetAddress_getHostByName (JNIEnv * env, + jclass class + __attribute__ ((__unused__)), + jstring host) +{ +#ifndef WITHOUT_NETWORK + const char *hostname; + cpnet_address **addresses; + jsize addresses_count; + int result; + jclass arr_class; + jobjectArray addrs; + jint i; + jbyte *octets; + jarray ret_octets; + + /* Grab the hostname string */ + hostname = (*env)->GetStringUTFChars (env, host, 0); + if (!hostname) + { + JCL_ThrowException (env, UNKNOWN_HOST_EXCEPTION, "Null hostname"); + return (jobjectArray) NULL; + } + + result = cpnet_getHostByName (env, hostname, &addresses, &addresses_count); + if (result != CPNATIVE_OK || addresses_count == 0) + { + JCL_ThrowException (env, UNKNOWN_HOST_EXCEPTION, hostname); + return (jobjectArray) NULL; + } + (*env)->ReleaseStringUTFChars (env, host, hostname); + + arr_class = (*env)->FindClass (env, "[B"); + if (!arr_class) + { + JCL_ThrowException (env, UNKNOWN_HOST_EXCEPTION, "Internal Error"); + return (jobjectArray) NULL; + } + + addrs = (*env)->NewObjectArray (env, addresses_count, arr_class, 0); + if (!addrs) + { + JCL_ThrowException (env, UNKNOWN_HOST_EXCEPTION, "Internal Error"); + return (jobjectArray) NULL; + } + + /* Now loop and copy in each address */ + for (i = 0; i < addresses_count; i++) + { + if (cpnet_isIPV4Address (addresses[i])) + { + ret_octets = (*env)->NewByteArray (env, 4); + + if (!ret_octets) + { + JCL_ThrowException (env, UNKNOWN_HOST_EXCEPTION, "Internal Error"); + cpnet_freeAddresses (env, addresses, addresses_count); + return (jobjectArray) NULL; + } + + octets = (*env)->GetByteArrayElements (env, ret_octets, 0); + + cpnet_IPV4AddressToBytes (addresses[i], octets); + + (*env)->ReleaseByteArrayElements (env, ret_octets, octets, 0); + + (*env)->SetObjectArrayElement (env, addrs, i, ret_octets); + } +#ifdef HAVE_INET6 + else if (cpnet_isIPV6Address (addresses[i])) + { + ret_octets = (*env)->NewByteArray (env, 16); + + if (!ret_octets) + { + JCL_ThrowException (env, UNKNOWN_HOST_EXCEPTION, "Internal Error"); + cpnet_freeAddresses (env, addresses, addresses_count); + return (jobjectArray) NULL; + } + + octets = (*env)->GetByteArrayElements (env, ret_octets, 0); + + cpnet_IPV6AddressToBytes (addresses[i], octets); + + (*env)->ReleaseByteArrayElements (env, ret_octets, octets, 0); + + (*env)->SetObjectArrayElement (env, addrs, i, ret_octets); + } +#endif + else + { + JCL_ThrowException (env, UNKNOWN_HOST_EXCEPTION, "Internal Error"); + cpnet_freeAddresses (env, addresses, addresses_count); + return (jobjectArray) NULL; + } + } + + cpnet_freeAddresses (env, addresses, addresses_count); + + return (addrs); +#else /* not WITHOUT_NETWORK */ + return (jobjectArray) NULL; +#endif /* not WITHOUT_NETWORK */ +} + +/*************************************************************************/ + +/* + * Return the IP address represented by a literal address. + * Will return null if the literal address is not valid. + */ +JNIEXPORT jbyteArray JNICALL +Java_java_net_VMInetAddress_aton (JNIEnv *env, + jclass class + __attribute__ ((__unused__)), + jstring host) +{ +#ifndef WITHOUT_NETWORK + const char *hostname; + cpnet_address *address; + int result; + jbyte *octets; + jbyteArray ret_octets; + + hostname = (*env)->GetStringUTFChars (env, host, 0); + if (!hostname) + { + JCL_ThrowException (env, UNKNOWN_HOST_EXCEPTION, "Null hostname"); + return (jbyteArray) NULL; + } + + result = cpnet_aton (env, hostname, &address); + if (result != CPNATIVE_OK) + { + JCL_ThrowException (env, UNKNOWN_HOST_EXCEPTION, "Internal Error"); + if (address) + cpnet_freeAddress (env, address); + return (jbyteArray) NULL; + } + if (!address) + return (jbyteArray) NULL; + + if (cpnet_isIPV4Address (address)) + { + ret_octets = (jbyteArray) (*env)->NewByteArray (env, 4); + + if (!ret_octets) + { + JCL_ThrowException (env, UNKNOWN_HOST_EXCEPTION, "Internal Error"); + cpnet_freeAddress (env, address); + return (jbyteArray) NULL; + } + + octets = (*env)->GetByteArrayElements (env, ret_octets, 0); + + cpnet_IPV4AddressToBytes (address, octets); + + (*env)->ReleaseByteArrayElements (env, ret_octets, octets, 0); + } +#ifdef HAVE_INET6 + else if (cpnet_isIPV6Address (address)) + { + ret_octets = (jbyteArray) (*env)->NewByteArray (env, 16); + + if (!ret_octets) + { + JCL_ThrowException (env, UNKNOWN_HOST_EXCEPTION, "Internal Error"); + cpnet_freeAddress (env, address); + return (jbyteArray) NULL; + } + + octets = (*env)->GetByteArrayElements (env, ret_octets, 0); + + cpnet_IPV6AddressToBytes (address, octets); + + (*env)->ReleaseByteArrayElements (env, ret_octets, octets, 0); + } +#endif + else + { + JCL_ThrowException (env, UNKNOWN_HOST_EXCEPTION, "Internal Error"); + cpnet_freeAddress (env, address); + return (jbyteArray) NULL; + } + + cpnet_freeAddress (env, address); + + return (ret_octets); + +#else /* not WITHOUT_NETWORK */ + return (jbyteArray) NULL; +#endif /* not WITHOUT_NETWORK */ +} + +/* end of file */ |