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support npcap non-compatiable mode

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U-DESKTOP-T772REH\wangyu 2018-07-01 11:13:50 +08:00
parent f7166bfde3
commit f1e18d4583
1 changed files with 32 additions and 0 deletions
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32
pcap_wrapper.cpp
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@ -40,10 +40,42 @@ struct init_pcap_t
}do_it; }do_it;
static void init_npcap_dll_path()
{
BOOL(WINAPI *SetDllDirectory)(LPCTSTR);
char sysdir_name[512];
int len;
SetDllDirectory = (BOOL(WINAPI *)(LPCTSTR)) GetProcAddress(GetModuleHandle("kernel32.dll"), "SetDllDirectoryA");
if (SetDllDirectory == NULL) {
printf("Error in SetDllDirectory");
}
else {
len = GetSystemDirectory(sysdir_name, 480); // be safe
if (!len)
printf("Error in GetSystemDirectory (%d)", (int)GetLastError());
strcat(sysdir_name, "\\Npcap");
if (SetDllDirectory(sysdir_name) == 0)
printf("Error in SetDllDirectory(\"System32\\Npcap\")");
}
}
#define EXPORT_FUN(XXX) do{ XXX= (__typeof__(XXX)) GetProcAddress(wpcap, #XXX); }while(0) #define EXPORT_FUN(XXX) do{ XXX= (__typeof__(XXX)) GetProcAddress(wpcap, #XXX); }while(0)
int init_pcap() int init_pcap()
{ {
HMODULE wpcap=LoadLibrary("wpcap.dll"); HMODULE wpcap=LoadLibrary("wpcap.dll");
if(wpcap!=0)
{
printf("using system32/wpcap.dll\n");
}
else
{
init_npcap_dll_path();
//SetDllDirectory("C:\\Windows\\System32\\Npcap\\");
wpcap=LoadLibrary("wpcap.dll");
if(wpcap!=0)
printf("using system32/npcap/wpcap.dll\n");
}
if(wpcap==0) if(wpcap==0)
{ {
printf("cant not open wpcap.dll, make sure winpcap/npcap is installed\n"); printf("cant not open wpcap.dll, make sure winpcap/npcap is installed\n");