ping 的奇怪问题

chen_jun_fen 2003-05-13 01:21:10

系统:win2000 professional
用超级用户登录,我再程序里面用ping是可以的
但是用普通用户登录,我再程序里用ping就不可以了

不知何故 ?

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妖孽玉流星 2010-06-10

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dadddddddddddddddd

chen_jun_fen 2003-05-16

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to uhlan(uhlan):
你这个代码我用过了,
但是假如这个ip地址不存在,然后ping的话,会比较慢,
有没有地方可以设时间的,
DWORD dwStatus = pIcmpSendEcho(hIP, *((DWORD*)phe->h_addr_list[0]),
acPingBuffer, sizeof(acPingBuffer), NULL, pIpe,
sizeof(IP_ECHO_REPLY) + sizeof(acPingBuffer), 5000);
把5000改成其他数字,也一样.没有什么变化

eastgao 2003-05-16

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赫赫
不好意思，没看清问题
我以为是unix操作系统呢

ksyou 2003-05-14

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学习蹭分2不误，呵呵

uhlan 2003-05-14

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给你一个利用ICMP的Ping源程序,对你一定会有帮助的
:)

#include "stdafx.h"

// Visual C++ 5.0: cl ping.cpp wsock32.lib

#include <iostream.h>
#include <winsock.h>
#include <windowsx.h>

typedef struct {
unsigned char Ttl; // Time To Live
unsigned char Tos; // Type Of Service
unsigned char Flags; // IP header flags
unsigned char OptionsSize; // Size in bytes of options data
unsigned char *OptionsData; // Pointer to options data
} IP_OPTION_INFORMATION, * PIP_OPTION_INFORMATION;

typedef struct {
DWORD Address; // Replying address
unsigned long Status; // Reply status
unsigned long RoundTripTime; // RTT in milliseconds
unsigned short DataSize; // Echo data size
unsigned short Reserved; // Reserved for system use
void *Data; // Pointer to the echo data
IP_OPTION_INFORMATION Options; // Reply options
} IP_ECHO_REPLY, * PIP_ECHO_REPLY;

int doit(int argc, char* argv)
{//[bugfree] ½¨Òé½«Õâ¸öargcºÍargvµÄ´¦ÀíÄÃµ½mainº¯ÊýÖÐ
// ¼ì²éÃüÁîÐÐ²ÎÊý
if (argc < 2) {
cerr << "usage: ping <host>" << endl;
return 1;
}

// ×°ÔØICMP.DLLÁ¬½Ó¿â
HINSTANCE hIcmp = LoadLibrary("ICMP.DLL");
if (hIcmp == 0) {
cerr << "Unable to locate ICMP.DLL!" << endl;
return 2;
}

// ²éÕÒ¸ø¶¨»úÆ÷µÄIPµØÖ·ÐÅÏ¢
struct hostent* phe;
if ((phe = gethostbyname(argv)) == 0) {
cerr << "Could not find IP address for " << argv << endl;
return 3;
}

// ¶¨Òåº¯ÊýÈý¸öÖ¸ÕëÀàÐÍ
typedef HANDLE (WINAPI* pfnHV)(VOID);
typedef BOOL (WINAPI* pfnBH)(HANDLE);
typedef DWORD (WINAPI* pfnDHDPWPipPDD)(HANDLE, DWORD, LPVOID, WORD,
PIP_OPTION_INFORMATION, LPVOID, DWORD, DWORD); // evil, no?
//¶¨ÒåÈý¸öÖ¸Õëº¯Êý
pfnHV pIcmpCreateFile;
pfnBH pIcmpCloseHandle;
pfnDHDPWPipPDD pIcmpSendEcho;

//´ÓICMP.DLLÖÐµÃµ½º¯ÊýÈë¿ÚµØÖ·
pIcmpCreateFile = (pfnHV)GetProcAddress(hIcmp, "IcmpCreateFile");
pIcmpCloseHandle = (pfnBH)GetProcAddress(hIcmp, "IcmpCloseHandle");
pIcmpSendEcho = (pfnDHDPWPipPDD)GetProcAddress(hIcmp, "IcmpSendEcho");
if ((pIcmpCreateFile == 0) || (pIcmpCloseHandle == 0) ||
(pIcmpSendEcho == 0)) {
cerr << "Failed to get proc addr for function." << endl;
return 4;
}

// ´ò¿ªping·þÎñ
HANDLE hIP = pIcmpCreateFile();
if (hIP == INVALID_HANDLE_VALUE) {
cerr << "Unable to open ping service." << endl;
return 5;
}

// ¹¹ÔìpingÊý¾Ý°ü
char acPingBuffer[64];
memset(acPingBuffer, '\xAA', sizeof(acPingBuffer));
PIP_ECHO_REPLY pIpe = (PIP_ECHO_REPLY)GlobalAlloc( GMEM_FIXED | GMEM_ZEROINIT,
sizeof(IP_ECHO_REPLY) + sizeof(acPingBuffer));
if (pIpe == 0) {
cerr << "Failed to allocate global ping packet buffer." << endl;
return 6;
}
pIpe->Data = acPingBuffer;
pIpe->DataSize = sizeof(acPingBuffer);

// ·¢ËÍpingÊý¾Ý°ü
DWORD dwStatus = pIcmpSendEcho(hIP, *((DWORD*)phe->h_addr_list[0]),
acPingBuffer, sizeof(acPingBuffer), NULL, pIpe,
sizeof(IP_ECHO_REPLY) + sizeof(acPingBuffer), 5000);
if (dwStatus != 0) {
cout << "Addr: " <<
int(LOBYTE(LOWORD(pIpe->Address))) << "." <<
int(HIBYTE(LOWORD(pIpe->Address))) << "." <<
int(LOBYTE(HIWORD(pIpe->Address))) << "." <<
int(HIBYTE(HIWORD(pIpe->Address))) << ", " <<
"RTT: " << int(pIpe->RoundTripTime) << "ms, " <<
"TTL: " << int(pIpe->Options.Ttl) << endl;
}
else {
cerr << "Error obtaining info from ping packet." << endl;
}

// ¹Ø±Õ,»ØÊÕ×ÊÔ´
GlobalFree(pIpe);
FreeLibrary(hIcmp);
return 0;
}
//==================Ö÷º¯Êý==================
int main(int argc, char* argv[])
{
WSAData wsaData;
if (WSAStartup(MAKEWORD(1, 1), &wsaData) != 0) {
return 255;
}

char strComputer[20];
strcpy(strComputer,"fileserver");
int retval = doit(strlen(strComputer), strComputer);

WSACleanup();
return retval;
}

uhlan 2003-05-14