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Added code to filter out packets not received from the subnet of an enabled interface and a checkbox to enable/disable it.

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This commit is contained in:
Daniel Collins 2011-04-24 23:32:10 +00:00
parent ba30c0d92b
commit 6167cdcb7e
3 changed files with 32 additions and 0 deletions
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13
src/ipxconfig.cpp
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@ -36,6 +36,7 @@
#define ID_W95_BUG 7
#define ID_UDP_BTN 8
#define ID_BCAST_ALL 9
#define ID_FILTER 10
#define ID_DIALOG_TXT 1
#define ID_DIALOG_OK 2
@ -64,6 +65,7 @@ struct reg_global {
uint16_t udp_port;
unsigned char w95_bug;
unsigned char bcast_all;
unsigned char filter;
} __attribute__((__packed__));
typedef std::vector<iface> iface_list;
@ -101,6 +103,7 @@ static struct {
HWND global_conf;
HWND w95_bug;
HWND bcast_all;
HWND filter;
HWND button_box;
} windows;
@ -194,6 +197,10 @@ static LRESULT CALLBACK main_wproc(HWND window, UINT msg, WPARAM wp, LPARAM lp)
global_conf.bcast_all = Button_GetCheck(windows.bcast_all) == BST_CHECKED;
break;
case ID_FILTER:
global_conf.filter = Button_GetCheck(windows.filter) == BST_CHECKED;
break;
default:
break;
}
@ -409,6 +416,7 @@ int main() {
global_conf.udp_port = PORT;
global_conf.w95_bug = 1;
global_conf.bcast_all = 0;
global_conf.filter = 1;
}
get_nics();
@ -612,8 +620,13 @@ static void init_windows() {
windows.w95_bug = create_child(windows.global_conf, btn_w+20, text_h, cbox_w, row_h, "BUTTON", "Enable Win 95 SO_BROADCAST bug", BS_AUTOCHECKBOX | WS_TABSTOP, 0, ID_W95_BUG);
windows.bcast_all = create_child(windows.global_conf, btn_w+20, text_h+row_h+5, cbox_w, row_h, "BUTTON", "Send broadcasts to all subnets", BS_AUTOCHECKBOX | WS_TABSTOP, 0, ID_BCAST_ALL);
int cbox2_w = get_text_width(windows.global_conf, "Filter received packets by subnet");
windows.filter = create_child(windows.global_conf, btn_w+cbox_w+30, text_h, cbox2_w, row_h, "BUTTON", "Filter received packets by subnet", BS_AUTOCHECKBOX | WS_TABSTOP, 0, ID_FILTER);
Button_SetCheck(windows.w95_bug, global_conf.w95_bug ? BST_CHECKED : BST_UNCHECKED);
Button_SetCheck(windows.bcast_all, global_conf.bcast_all ? BST_CHECKED : BST_UNCHECKED);
Button_SetCheck(windows.filter, global_conf.filter ? BST_CHECKED : BST_UNCHECKED);
}
{

18
src/ipxwrapper.c
View File

@ -89,6 +89,7 @@ BOOL WINAPI DllMain(HINSTANCE me, DWORD why, LPVOID res) {
global_conf.udp_port = DEFAULT_PORT;
global_conf.w95_bug = 1;
global_conf.bcast_all = 0;
global_conf.filter = 1;
}
if(!load_nics()) {
@ -314,6 +315,23 @@ static DWORD WINAPI router_main(LPVOID buf) {
continue;
}
if(global_conf.filter) {
ipx_nic *nic = nics;
while(nic) {
if((nic->ipaddr & nic->netmask) == (addr.sin_addr.s_addr & nic->netmask)) {
break;
}
nic = nic->next;
}
if(!nic) {
/* Packet not recieved from subnet of an enabled interface */
continue;
}
}
packet->size = ntohs(packet->size);
if(packet->size > MAX_PACKET_SIZE || packet->size+sizeof(ipx_packet)-1 != rval) {

1
src/ipxwrapper.h
View File

@ -143,6 +143,7 @@ struct reg_global {
uint16_t udp_port;
unsigned char w95_bug;
unsigned char bcast_all;
unsigned char filter;
} __attribute__((__packed__));
extern ipx_socket *sockets;