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#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <httpfilt.h>
#include <tchar.h>
// Returns 0 if doesn't exist, 1 if it is a file, 2 if it is a directory
int inline file_exists(TCHAR const * filename)
{
WIN32_FIND_DATA fd;
HANDLE fh = FindFirstFile(filename, &fd);
if (fh == INVALID_HANDLE_VALUE)
return 0;
else
{
FindClose(fh);
return fd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ? 2 : 1;
}
}
BOOL WINAPI GetFilterVersion(HTTP_FILTER_VERSION * pVer)
{
pVer->dwFilterVersion = HTTP_FILTER_REVISION;
pVer->dwFlags = SF_NOTIFY_URL_MAP | SF_NOTIFY_ORDER_DEFAULT;
return TRUE;
}
DWORD WINAPI HttpFilterProc(PHTTP_FILTER_CONTEXT pfc, DWORD notificationType, LPVOID pn)
{
switch(notificationType)
{
case SF_NOTIFY_URL_MAP:
HTTP_FILTER_URL_MAP & um = *((HTTP_FILTER_URL_MAP *)pn);
if (!file_exists(um.pszPhysicalPath))
{
size_t pathlen = _tcslen(um.pszPhysicalPath);
size_t m = pathlen - _tcslen(um.pszURL);
for(size_t i = pathlen - 1; i > m; --i)
{
TCHAR c = um.pszPhysicalPath[i];
if (c == '\\')
{
um.pszPhysicalPath[i] = 0;
int r = file_exists(um.pszPhysicalPath);
if (r == 1)
break;
else
{
um.pszPhysicalPath[i] = c;
if (r == 2) break;
}
}
}
}
}
return SF_STATUS_REQ_NEXT_NOTIFICATION;
}
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