HANDLE FILECACHE::openfileat(const char* filename, long position)
{
if(!validfilename(filename)) return INVALID_HANDLE_VALUE;
char realname[BUFSIZ] = "Data Files\\MWSE\\";
// 2005-02-12 CDC Create the file storage area if it doesn't already exist
CreateDirectory("Data Files\\MWSE", NULL);
// 2005-07-01 CDC Allow connection to named pipes one the local machine
if ( *filename == '|' )
{
strcpy(realname, "\\\\.\\pipe\\MWSE");
filename++;
}
strncpy(&realname[strlen(realname)], filename,NELEM(realname)-strlen(realname));
HANDLE result = CreateFile(
realname
,GENERIC_READ|GENERIC_WRITE
,FILE_SHARE_READ|FILE_SHARE_WRITE
,NULL
,OPEN_ALWAYS
,FILE_ATTRIBUTE_NORMAL|FILE_FLAG_SEQUENTIAL_SCAN
,NULL
);
if(result != INVALID_HANDLE_VALUE && SetFilePointer(result, position, 0, FILE_BEGIN) < 0)
{
CloseHandle(result);
result = INVALID_HANDLE_VALUE;
}
return result;
}
ibool MVFileDialog::validFilename(const char *filename)
/****************************************************************************
*
* Function: MVFileDialog::validFilename
* Parameters: filename - Filename to check for validity
* Returns: True if the filename is valid.
*
* Description: To determine this, we first check if the directory is
* valid. If the 'fdMustExist' flag is set, then we also check
* to ensure that the file selected also exists. If any errors
* occur, we pop up a dialog box to that effect and return
* false.
*
****************************************************************************/
{
char path[PM_MAX_PATH];
char drive[PM_MAX_DRIVE];
char dir[PM_MAX_PATH];
char name[PM_MAX_PATH];
char ext[PM_MAX_PATH];
ibool invalid;
PM_splitpath((char*)filename,drive,dir,name,ext);
if (drive[0] == 0) {
strcpy(drive,driveSel->getText());
if (dir[0] == 0)
strcpy(dir,directory);
}
// Check to see that the drive/directory exists
strcpy(path,drive); strcat(path,dir);
int len = strlen(path);
if (path[len-1] == '\\' || path[len-1] == '/')
path[--len] = '\0';
#ifndef __UNIX__
if (path[len-1] == ':')
invalid = !PM_driveValid((char)toupper(path[len-2]));
else
#endif
invalid = !issubdirectory(path) && !isrootdirectory(path);
if (invalid) {
MV_messageBox(dc,invalidDriveText,mfError | mfOKButton | mfOKDefault);
fileLine->select();
return false;
}
// Check that the file exists if required. If the filename has wildcards,
// then it is valid.
if (!hasWildcards(filename)) {
strcat(path,"/");
if (MVFileDialog::flags & fdMustExist) {
// Check that the file exists or is a subdirectory
strcat(path,name);
strcat(path,ext);
if (!validfilename(path) && !issubdirectory(path)) {
MV_messageBox(dc,invalidFileText,mfError | mfOKButton | mfOKDefault);
fileLine->select();
fileLine->setText(fileLine->getText());
return false;
}
}
else {
// First check to see that the path to the file exists
if (!issubdirectory(path)) {
MV_messageBox(dc,invalidFileText,mfError | mfOKButton | mfOKDefault);
fileLine->select();
fileLine->setText(fileLine->getText());
return false;
}
}
}
return true;
}
