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Removed ip_is_local and associated code. Test for packets originating from us by

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attempting to fetch an interface using the IPX source address instead.
This commit is contained in:
Daniel Collins 2012-11-03 02:03:46 +00:00
parent 57e4f27bb8
commit d8a0dcf5c8
2 changed files with 13 additions and 76 deletions
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75
src/ipxwrapper.c
View File

@ -47,11 +47,6 @@ main_config_t main_config;
struct rclient g_rclient;
static CRITICAL_SECTION sockets_cs;
static CRITICAL_SECTION addrs_cs;
/* List of local IP addresses with associated IPX interfaces */
static struct ipaddr_list *local_addrs = NULL;
static time_t local_updated = 0;
static void init_cs(CRITICAL_SECTION *cs)
{
@ -62,8 +57,6 @@ static void init_cs(CRITICAL_SECTION *cs)
}
}
static void free_local_ips(void);
BOOL WINAPI DllMain(HINSTANCE me, DWORD why, LPVOID res) {
if(why == DLL_PROCESS_ATTACH) {
log_open("ipxwrapper.log");
@ -93,7 +86,6 @@ BOOL WINAPI DllMain(HINSTANCE me, DWORD why, LPVOID res) {
}
init_cs(&sockets_cs);
init_cs(&addrs_cs);
WSADATA wsdata;
int err = WSAStartup(MAKEWORD(1,1), &wsdata);
@ -135,11 +127,8 @@ BOOL WINAPI DllMain(HINSTANCE me, DWORD why, LPVOID res) {
rclient_stop(&g_rclient);
free_local_ips();
WSACleanup();
DeleteCriticalSection(&addrs_cs);
DeleteCriticalSection(&sockets_cs);
ipx_interfaces_cleanup();
@ -188,67 +177,3 @@ void lock_sockets(void) {
void unlock_sockets(void) {
LeaveCriticalSection(&sockets_cs);
}
/* Check if supplied IP (network byte order) is a local address */
BOOL ip_is_local(uint32_t ipaddr) {
EnterCriticalSection(&addrs_cs);
if(local_updated + main_config.iface_ttl < time(NULL)) {
/* TODO: Use all local IPs rather than just the ones with associated IPX addresses? */
struct ipx_interface *ifaces = get_ipx_interfaces();
struct ipx_interface *i = ifaces;
while(i) {
/* TODO: Rewrite. */
if(!i->ipaddr)
{
continue;
}
struct ipaddr_list *nn = malloc(sizeof(struct ipaddr_list));
if(!nn) {
log_printf(LOG_ERROR, "Out of memory! Can't allocate ipaddr_list structure!");
break;
}
nn->ipaddr = i->ipaddr->ipaddr;
nn->next = local_addrs;
local_addrs = nn;
i = i->next;
}
free_ipx_interface_list(&ifaces);
local_updated = time(NULL);
}
struct ipaddr_list *p = local_addrs;
while(p) {
if(p->ipaddr == ipaddr) {
LeaveCriticalSection(&addrs_cs);
return TRUE;
}
p = p->next;
}
LeaveCriticalSection(&addrs_cs);
return FALSE;
}
/* Free local IP address list */
static void free_local_ips(void) {
struct ipaddr_list *p = local_addrs, *d;
while(p) {
d = p;
p = p->next;
free(d);
}
local_addrs = NULL;
}

14
src/winsock.c
View File

@ -393,7 +393,19 @@ static int recv_packet(ipx_socket *sockptr, char *buf, int bufsize, int flags, s
addr->sa_flags |= 0x01;
}
if(ip_is_local(rp_header->src_ipaddr)) {
/* Attempt to get an IPX interface using the
* source address to test if the packet claims
* to be from one of our interfaces.
*/
ipx_interface_t *src_iface = ipx_interface_by_addr(
addr32_in(packet->src_net),
addr48_in(packet->src_node)
);
if(src_iface)
{
free_ipx_interface(src_iface);
addr->sa_flags |= 0x02;
}
}else{