mirror of
https://github.com/angryip/ipscan.git
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6832ae589d
* LibraryLoader class introduced: now used by RawSocket and WindowsPinger * JNI libraries are now always loaded from the classpath (or the jar file): lib dirs added to the classpath in eclipse project git-svn-id: https://ipscan.svn.sourceforge.net/svnroot/ipscan/trunk@176 375186e5-ef17-0410-b0b6-91563547dcda
104 lines
3.2 KiB
C
Executable File
104 lines
3.2 KiB
C
Executable File
/*
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* This file is a part of Angry IP Scanner source code,
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* see http://www.azib.net/ for more information.
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* Licensed under GPLv2.
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*
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* Windows JNI pinger using Microsoft's ICMP.DLL
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* Author: Anton Keks
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*/
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#include <windows.h>
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#include "WindowsPinger.h"
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FARPROC IcmpCreateFile = NULL;
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typedef BOOL (FAR WINAPI *TIcmpCloseHandle)(HANDLE IcmpHandle);
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TIcmpCloseHandle IcmpCloseHandle = NULL;
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typedef DWORD (FAR WINAPI *TIcmpSendEcho)(
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HANDLE IcmpHandle, /* handle returned from IcmpCreateFile() */
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u_long DestAddress, /* destination IP address (in network order) */
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LPVOID RequestData, /* pointer to buffer to send */
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WORD RequestSize, /* length of data in buffer */
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LPVOID RequestOptns, /* see Note 2 */
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LPVOID ReplyBuffer, /* see Note 1 */
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DWORD ReplySize, /* length of reply (must allow at least 1 reply) */
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DWORD Timeout /* time in milliseconds to wait for reply */
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);
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TIcmpSendEcho IcmpSendEcho = NULL;
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/*
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* Class: net_azib_ipscan_core_net_WindowsPinger
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* Method: nativeIcmpCreateFile
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*/
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JNIEXPORT jint JNICALL
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Java_net_azib_ipscan_core_net_WindowsPinger_nativeIcmpCreateFile
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(JNIEnv *env, jclass cls)
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{
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// Initialize dlls on first use
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if (IcmpCreateFile == NULL) {
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HMODULE hICMP = LoadLibrary("icmp.dll");
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if (!hICMP) {
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// newer versions of Windows should include this one instead
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hICMP = LoadLibrary("iphlpapi.dll");
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}
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if (!hICMP) {
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return -1;
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}
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IcmpCreateFile = (FARPROC) GetProcAddress(hICMP, "IcmpCreateFile");
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IcmpCloseHandle = (TIcmpCloseHandle) GetProcAddress(hICMP, "IcmpCloseHandle");
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IcmpSendEcho = (TIcmpSendEcho) GetProcAddress(hICMP, "IcmpSendEcho");
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}
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return IcmpCreateFile();
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}
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/*
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* Class: net_azib_ipscan_core_net_WindowsPinger
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* Method: nativeIcmpCloseHandle
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*/
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JNIEXPORT void JNICALL
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Java_net_azib_ipscan_core_net_WindowsPinger_nativeIcmpCloseHandle
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(JNIEnv *env, jclass cls, jint handle)
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{
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return IcmpCloseHandle((HANDLE)handle);
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}
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/*
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* Class: net_azib_ipscan_core_net_WindowsPinger
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* Method: nativeIcmpSendEcho
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*/
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JNIEXPORT jint JNICALL
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Java_net_azib_ipscan_core_net_WindowsPinger_nativeIcmpSendEcho
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(JNIEnv *env, jclass cls, jint handle, jbyteArray address, jbyteArray pingData, jbyteArray replyData, jint timeout)
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{
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DWORD replyCount;
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jbyte *addrBuf, *pingDataBuf, *replyDataBuf;
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jint pingDataLen, replyDataLen;
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jclass replyClass;
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jfieldID fid;
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u_long ip;
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addrBuf = (*env)->GetByteArrayElements(env, address, NULL);
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pingDataBuf = (*env)->GetByteArrayElements(env, pingData, NULL);
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replyDataBuf = (*env)->GetByteArrayElements(env, replyData, NULL);
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pingDataLen = (*env)->GetArrayLength(env, pingData);
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replyDataLen = (*env)->GetArrayLength(env, replyData);
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ip = *((u_long*)addrBuf);
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replyCount = IcmpSendEcho((HANDLE)handle, ip, pingDataBuf, pingDataLen,
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NULL, replyDataBuf, replyDataLen, timeout);
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(*env)->ReleaseByteArrayElements(env, address, addrBuf, JNI_ABORT);
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(*env)->ReleaseByteArrayElements(env, pingData, pingDataBuf, JNI_ABORT);
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(*env)->ReleaseByteArrayElements(env, replyData, replyDataBuf, 0);
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return replyCount;
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}
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