// Create a SSTP server SSTP_SERVER *NewSstpServer(CEDAR *cedar, IP *client_ip, UINT client_port, IP *server_ip, UINT server_port, SOCK_EVENT *se, char *client_host_name, char *crypt_name) { SSTP_SERVER *s = ZeroMalloc(sizeof(SSTP_SERVER)); s->LastRecvTick = Tick64(); StrCpy(s->ClientHostName, sizeof(s->ClientHostName), client_host_name); StrCpy(s->ClientCipherName, sizeof(s->ClientCipherName), crypt_name); s->Cedar = cedar; AddRef(s->Cedar->ref); NewTubePair(&s->TubeSend, &s->TubeRecv, 0); SetTubeSockEvent(s->TubeSend, se); s->Now = Tick64(); Copy(&s->ClientIp, client_ip, sizeof(IP)); s->ClientPort = client_port; Copy(&s->ServerIp, server_ip, sizeof(IP)); s->ServerPort = server_port; s->SockEvent = se; AddRef(s->SockEvent->ref); s->RecvQueue = NewQueueFast(); s->SendQueue = NewQueueFast(); s->Interrupt = NewInterruptManager(); return s; }
// DDNS client thread void DCThread(THREAD *thread, void *param) { DDNS_CLIENT *c; INTERRUPT_MANAGER *interrput; UINT last_ip_hash = 0; void *route_change_poller = NULL; bool last_time_ip_changed = false; UINT last_azure_ddns_trigger_int = 0; UINT last_vgs_ddns_trigger_int = 0; UINT n; INTERNET_SETTING last_t; // Validate arguments if (thread == NULL || param == NULL) { return; } c = (DDNS_CLIENT *)param; interrput = NewInterruptManager(); route_change_poller = NewRouteChange(); IsRouteChanged(route_change_poller); Zero(&last_t, sizeof(last_t)); n = 0; while (c->Halt == false) { UINT ip_hash = GetHostIPAddressHash32(); UINT interval; UINT64 now = Tick64(); bool ip_changed = false; bool azure_client_triggered = false; bool internet_setting_changed = false; bool vgs_server_triggered = false; if (c->Cedar->Server != NULL && c->Cedar->Server->AzureClient != NULL) { if (c->Cedar->Server->AzureClient->DDnsTriggerInt != last_azure_ddns_trigger_int) { azure_client_triggered = true; last_azure_ddns_trigger_int = c->Cedar->Server->AzureClient->DDnsTriggerInt; last_time_ip_changed = false; Debug("DDNS Thread Triggered by AzureClient.\n"); } } if (Cmp(&last_t, &c->InternetSetting, sizeof(INTERNET_SETTING)) != 0) { Copy(&last_t, &c->InternetSetting, sizeof(INTERNET_SETTING)); internet_setting_changed = true; last_time_ip_changed = false; } if (ip_hash != last_ip_hash) { last_time_ip_changed = false; Debug("DDNS Thread Triggered by IP Hash Changed.\n"); } if ((ip_hash != last_ip_hash) || (IsRouteChanged(route_change_poller)) || azure_client_triggered || internet_setting_changed || vgs_server_triggered) { if (last_time_ip_changed == false) { // Call all getting functions from the beginning if the routing // table or the IP address of this host has changed c->NextRegisterTick_IPv4 = 0; c->NextRegisterTick_IPv6 = 0; c->NextGetMyIpTick_IPv4 = 0; c->NextGetMyIpTick_IPv6 = 0; last_ip_hash = ip_hash; last_time_ip_changed = true; ip_changed = true; Debug("DDNS Internet Condition Changed.\n"); } } else { last_time_ip_changed = false; } if ((n++) >= 1) { // Self IPv4 address acquisition if (c->NextGetMyIpTick_IPv4 == 0 || now >= c->NextGetMyIpTick_IPv4) { UINT next_interval; char ip[MAX_SIZE]; Zero(ip, sizeof(ip)); c->Err_IPv4_GetMyIp = DCGetMyIp(c, false, ip, sizeof(ip), NULL); if (c->Err_IPv4_GetMyIp == ERR_NO_ERROR) { if (StrCmpi(c->LastMyIPv4, ip) != 0) { ip_changed = true; StrCpy(c->LastMyIPv4, sizeof(c->LastMyIPv4), ip); } next_interval = GenRandInterval(DDNS_GETMYIP_INTERVAL_OK_MIN, DDNS_GETMYIP_INTERVAL_OK_MAX); } else { if (IsEmptyStr(c->LastMyIPv4) == false) { ip_changed = true; } Zero(c->LastMyIPv4, sizeof(c->LastMyIPv4)); next_interval = GenRandInterval(DDNS_GETMYIP_INTERVAL_NG_MIN, DDNS_GETMYIP_INTERVAL_NG_MAX); } c->NextGetMyIpTick_IPv4 = Tick64() + (UINT64)next_interval; AddInterrupt(interrput, c->NextGetMyIpTick_IPv4); } // Self IPv6 address acquisition if (c->NextGetMyIpTick_IPv6 == 0 || now >= c->NextGetMyIpTick_IPv6) { UINT next_interval; char ip[MAX_SIZE]; Zero(ip, sizeof(ip)); c->Err_IPv6_GetMyIp = DCGetMyIp(c, true, ip, sizeof(ip), NULL); if (c->Err_IPv6_GetMyIp == ERR_NO_ERROR) { if (StrCmpi(c->LastMyIPv6, ip) != 0) { ip_changed = true; StrCpy(c->LastMyIPv6, sizeof(c->LastMyIPv6), ip); } next_interval = GenRandInterval(DDNS_GETMYIP_INTERVAL_OK_MIN, DDNS_GETMYIP_INTERVAL_OK_MAX); } else { if (IsEmptyStr(c->LastMyIPv6) == false) { ip_changed = true; } Zero(c->LastMyIPv6, sizeof(c->LastMyIPv6)); next_interval = GenRandInterval(DDNS_GETMYIP_INTERVAL_NG_MIN, DDNS_GETMYIP_INTERVAL_NG_MAX); } c->NextGetMyIpTick_IPv6 = Tick64() + (UINT64)next_interval; AddInterrupt(interrput, c->NextGetMyIpTick_IPv6); } } if (ip_changed) { c->NextRegisterTick_IPv4 = 0; c->NextRegisterTick_IPv6 = 0; } // IPv4 host registration if (c->NextRegisterTick_IPv4 == 0 || now >= c->NextRegisterTick_IPv4) { UINT next_interval; c->Err_IPv4 = DCRegister(c, false, NULL, NULL); if (c->Err_IPv4 == ERR_NO_ERROR) { next_interval = GenRandInterval(DDNS_REGISTER_INTERVAL_OK_MIN, DDNS_REGISTER_INTERVAL_OK_MAX); } else { next_interval = GenRandInterval(DDNS_REGISTER_INTERVAL_NG_MIN, DDNS_REGISTER_INTERVAL_NG_MAX); } //next_interval = 0; c->NextRegisterTick_IPv4 = Tick64() + (UINT64)next_interval; if (true) { DDNS_CLIENT_STATUS st; DCGetStatus(c, &st); SiApplyAzureConfig(c->Cedar->Server, &st); } AddInterrupt(interrput, c->NextRegisterTick_IPv4); } if (c->Halt) { break; } // IPv6 host registration if (c->NextRegisterTick_IPv6 == 0 || now >= c->NextRegisterTick_IPv6) { UINT next_interval; c->Err_IPv6 = DCRegister(c, true, NULL, NULL); if (c->Err_IPv6 == ERR_NO_ERROR) { next_interval = GenRandInterval(DDNS_REGISTER_INTERVAL_OK_MIN, DDNS_REGISTER_INTERVAL_OK_MAX); } else { next_interval = GenRandInterval(DDNS_REGISTER_INTERVAL_NG_MIN, DDNS_REGISTER_INTERVAL_NG_MAX); } c->NextRegisterTick_IPv6 = Tick64() + (UINT64)next_interval; if (true) { DDNS_CLIENT_STATUS st; DCGetStatus(c, &st); SiApplyAzureConfig(c->Cedar->Server, &st); } AddInterrupt(interrput, c->NextRegisterTick_IPv6); } interval = GetNextIntervalForInterrupt(interrput); interval = MIN(interval, 1234); if (n == 1) { interval = MIN(interval, 0); } if (c->Halt) { break; } if (c->KeyChanged) { c->KeyChanged = false; c->NextRegisterTick_IPv4 = c->NextRegisterTick_IPv6 = 0; interval = 0; } if (last_time_ip_changed) { if (c->Cedar->Server != NULL && c->Cedar->Server->AzureClient != NULL) { c->Cedar->Server->AzureClient->IpStatusRevision++; } } Wait(c->Event, interval); } FreeRouteChange(route_change_poller); FreeInterruptManager(interrput); }