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Don't block local adapter related ips in experimental build.

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Mr_Goldberg 2020-04-30 13:36:59 -04:00
parent 0857125d03
commit 0f6ae7f09e
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3 changed files with 56 additions and 0 deletions
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50
dll/base.cpp
View file

@ -471,6 +471,45 @@ void Auth_Ticket_Manager::Callback(Common_Message *msg)
#ifdef STEAM_WIN32
#include "../detours/detours.h"
struct ips_test {
uint32_t ip_from;
uint32_t ip_to;
};
static std::vector<struct ips_test> adapter_ips;
void set_adapter_ips(uint32_t *from, uint32_t *to, unsigned num_ips)
{
adapter_ips.clear();
for (unsigned i = 0; i < num_ips; ++i) {
struct ips_test ip_a;
PRINT_DEBUG("from: %hhu.%hhu.%hhu.%hhu\n", ((unsigned char *)&from[i])[0], ((unsigned char *)&from[i])[1], ((unsigned char *)&from[i])[2], ((unsigned char *)&from[i])[3]);
PRINT_DEBUG("to: %hhu.%hhu.%hhu.%hhu\n", ((unsigned char *)&to[i])[0], ((unsigned char *)&to[i])[1], ((unsigned char *)&to[i])[2], ((unsigned char *)&to[i])[3]);
ip_a.ip_from = ntohl(from[i]);
ip_a.ip_to = ntohl(to[i]);
if (ip_a.ip_to < ip_a.ip_from) continue;
if ((ip_a.ip_to - ip_a.ip_from) > (1 << 25)) continue;
PRINT_DEBUG("added\n");
adapter_ips.push_back(ip_a);
}
}
static bool is_adapter_ip(unsigned char *ip)
{
uint32_t ip_temp = 0;
memcpy(&ip_temp, ip, sizeof(ip_temp));
ip_temp = ntohl(ip_temp);
for (auto &i : adapter_ips) {
if (i.ip_from <= ip_temp && ip_temp <= i.ip_to) {
PRINT_DEBUG("ADAPTER IP %hhu.%hhu.%hhu.%hhu\n", ip[0], ip[1], ip[2], ip[3]);
return true;
}
}
return false;
}
static bool is_lan_ip(const sockaddr *addr, int namelen)
{
if (!namelen) return false;
@ -480,6 +519,7 @@ static bool is_lan_ip(const sockaddr *addr, int namelen)
unsigned char ip[4];
memcpy(ip, &addr_in->sin_addr, sizeof(ip));
PRINT_DEBUG("CHECK LAN IP %hhu.%hhu.%hhu.%hhu:%u\n", ip[0], ip[1], ip[2], ip[3], ntohs(addr_in->sin_port));
if (is_adapter_ip(ip)) return true;
if (ip[0] == 127) return true;
if (ip[0] == 10) return true;
if (ip[0] == 192 && ip[1] == 168) return true;
@ -755,6 +795,16 @@ BOOL WINAPI DllMain( HINSTANCE, DWORD dwReason, LPVOID ) {
}
return TRUE;
}
#else
void set_adapter_ips(uint32_t *from, uint32_t *to, unsigned num_ips)
{
}
#endif
#else
void set_adapter_ips(uint32_t *from, uint32_t *to, unsigned num_ips)
{
}
#endif

1
dll/base.h
View file

@ -516,6 +516,7 @@ public:
}
};
void set_adapter_ips(uint32_t *from, uint32_t *to, unsigned num_ips);
#ifdef EMU_EXPERIMENTAL_BUILD
bool crack_SteamAPI_RestartAppIfNecessary(uint32 unOwnAppID);
bool crack_SteamAPI_Init();

5
dll/network.cpp
View file

@ -36,6 +36,8 @@
#define MAX_BROADCASTS 16
static int number_broadcasts = -1;
static IP_PORT broadcasts[MAX_BROADCASTS];
static uint32_t lower_range_ips[MAX_BROADCASTS];
static uint32_t upper_range_ips[MAX_BROADCASTS];
#define BROADCAST_INTERVAL 5.0
#define HEARTBEAT_TIMEOUT 20.0
@ -118,6 +120,8 @@ static void get_broadcast_info(uint16 port)
uint32 broadcast_ip = iface_ip | ~subnet_mask;
ip_port->ip = broadcast_ip;
ip_port->port = port;
lower_range_ips[number_broadcasts] = iface_ip & subnet_mask;
upper_range_ips[number_broadcasts] = broadcast_ip;
number_broadcasts++;
if (number_broadcasts >= MAX_BROADCASTS) {
@ -328,6 +332,7 @@ static bool send_broadcasts(sock_t sock, uint16 port, char *data, unsigned long
if (number_broadcasts < 0 || check_timedout(last_get_broadcast_info, 60.0)) {
PRINT_DEBUG("get_broadcast_info\n");
get_broadcast_info(port);
set_adapter_ips(lower_range_ips, upper_range_ips, number_broadcasts);
last_get_broadcast_info = std::chrono::high_resolution_clock::now();
}