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putty-source/windows/select-gui.c
Simon Tatham 82971a3ebb Handle WM_NETEVENT in Windows Pageant.
Apparently when I made Windows Pageant use the winselgui system, I
added the call that gets WSAAsyncSelect response messages sent to
Pageant's window, but I didn't add the switch case in the window
procedure that actually handles those responses. I suppose I didn't
notice at the time because no actual functionality used it - Pageant
has never yet dealt with any real (i.e. Winsock) sockets, only with
HANDLE-based named pipes, which are called 'sockets' in PuTTY's
abstraction, but not by Windows.
2022-02-04 19:32:47 +00:00

66 lines
1.6 KiB
C

/*
* Implementation of do_select() for network.c to use, that uses
* WSAAsyncSelect to convert network activity into window messages,
* for integration into a GUI event loop.
*/
#include "putty.h"
static HWND winsel_hwnd = NULL;
void winselgui_set_hwnd(HWND hwnd)
{
winsel_hwnd = hwnd;
}
void winselgui_clear_hwnd(void)
{
winsel_hwnd = NULL;
}
const char *do_select(SOCKET skt, bool enable)
{
int msg, events;
if (enable) {
msg = WM_NETEVENT;
events = (FD_CONNECT | FD_READ | FD_WRITE |
FD_OOB | FD_CLOSE | FD_ACCEPT);
} else {
msg = events = 0;
}
assert(winsel_hwnd);
if (p_WSAAsyncSelect(skt, winsel_hwnd, msg, events) == SOCKET_ERROR)
return winsock_error_string(p_WSAGetLastError());
return NULL;
}
struct wm_netevent_params {
/* Used to pass data to wm_netevent_callback */
WPARAM wParam;
LPARAM lParam;
};
static void wm_netevent_callback(void *vctx)
{
struct wm_netevent_params *params = (struct wm_netevent_params *)vctx;
select_result(params->wParam, params->lParam);
sfree(params);
}
void winselgui_response(WPARAM wParam, LPARAM lParam)
{
/*
* To protect against re-entrancy when Windows's recv()
* immediately triggers a new WSAAsyncSelect window message, we
* don't call select_result directly from this handler but instead
* wait until we're back out at the top level of the message loop.
*/
struct wm_netevent_params *params = snew(struct wm_netevent_params);
params->wParam = wParam;
params->lParam = lParam;
queue_toplevel_callback(wm_netevent_callback, params);
}