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server: proxy: disconnect all active sessions on shutdown

This commit is contained in:
Kobi Mizrachi 2020-01-19 11:51:34 +02:00 committed by akallabeth
parent 457d5e426c
commit 92c3f76809
6 changed files with 194 additions and 63 deletions
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37
server/proxy/freerdp_proxy.c
View File

@ -31,18 +31,21 @@
#define TAG PROXY_TAG("server")
static proxyConfig config = { 0 };
static proxyServer* server = NULL;
static void cleanup_handler(int signum)
{
printf("\n");
WLog_INFO(TAG, "[%s]: caught signal %d, starting cleanup...", __FUNCTION__, signum);
WLog_INFO(TAG, "stopping all connections.");
pf_server_stop(server);
WLog_INFO(TAG, "freeing loaded modules and plugins.");
pf_modules_free();
WLog_INFO(TAG, "freeing config.");
pf_server_config_free_internal(&config);
pf_server_config_free(server->config);
pf_server_free(server);
WLog_INFO(TAG, "exiting.");
exit(signum);
@ -50,11 +53,12 @@ static void cleanup_handler(int signum)
int main(int argc, char* argv[])
{
const char* cfg = "config.ini";
int status = 0;
proxyConfig* config = NULL;
const char* config_path = "config.ini";
int status = -1;
if (argc > 1)
cfg = argv[1];
config_path = argv[1];
/* Register cleanup handler for graceful termination */
signal(SIGINT, cleanup_handler);
@ -72,13 +76,26 @@ int main(int argc, char* argv[])
pf_modules_list_loaded_plugins();
if (!pf_server_config_load(cfg, &config))
config = pf_server_config_load(config_path);
if (!config)
goto fail;
pf_server_config_print(&config);
status = pf_server_start(&config);
pf_server_config_print(config);
server = pf_server_new(config);
if (!server)
goto fail;
if (!pf_server_start(server))
goto fail;
if (WaitForSingleObject(server->thread, INFINITE) != WAIT_OBJECT_0)
goto fail;
status = 0;
fail:
pf_server_free(server);
pf_modules_free();
pf_server_config_free_internal(&config);
pf_server_config_free(config);
return status;
}

16
server/proxy/pf_config.c
View File

@ -242,9 +242,9 @@ static BOOL pf_config_load_captures(wIniFile* ini, proxyConfig* config)
return TRUE;
}
BOOL pf_server_config_load(const char* path, proxyConfig* config)
proxyConfig* pf_server_config_load(const char* path)
{
BOOL ok = FALSE;
proxyConfig* config = NULL;
wIniFile* ini = IniFile_New();
if (!ini)
@ -259,6 +259,8 @@ BOOL pf_server_config_load(const char* path, proxyConfig* config)
goto out;
}
config = calloc(1, sizeof(proxyConfig));
if (!pf_config_load_server(ini, config))
goto out;
@ -283,10 +285,13 @@ BOOL pf_server_config_load(const char* path, proxyConfig* config)
if (!pf_config_load_captures(ini, config))
goto out;
ok = TRUE;
IniFile_Free(ini);
return config;
out:
IniFile_Free(ini);
return ok;
pf_server_config_free(config);
return NULL;
}
void pf_server_config_print(proxyConfig* config)
@ -336,7 +341,7 @@ void pf_server_config_print(proxyConfig* config)
CONFIG_PRINT_STR(config, CapturesDirectory);
}
void pf_server_config_free_internal(proxyConfig* config)
void pf_server_config_free(proxyConfig* config)
{
if (config == NULL)
return;
@ -344,4 +349,5 @@ void pf_server_config_free_internal(proxyConfig* config)
free(config->CapturesDirectory);
free(config->TargetHost);
free(config->Host);
free(config);
}

4
server/proxy/pf_config.h
View File

@ -77,8 +77,8 @@ FREERDP_API BOOL pf_config_get_uint32(wIniFile* ini, const char* section, const
FREERDP_API BOOL pf_config_get_bool(wIniFile* ini, const char* section, const char* key);
FREERDP_API const char* pf_config_get_str(wIniFile* ini, const char* section, const char* key);
BOOL pf_server_config_load(const char* path, proxyConfig* config);
proxyConfig* pf_server_config_load(const char* path);
void pf_server_config_print(proxyConfig* config);
void pf_server_config_free_internal(proxyConfig* config);
void pf_server_config_free(proxyConfig* config);
#endif /* FREERDP_SERVER_PROXY_PFCONFIG_H */

6
server/proxy/pf_context.c
View File

@ -56,11 +56,13 @@ error:
/* Proxy context free callback */
static void client_to_proxy_context_free(freerdp_peer* client, pServerContext* context)
{
WINPR_UNUSED(client);
proxyServer* server;
if (!context)
if (!client || !context)
return;
server = (proxyServer*)client->ContextExtra;
WTSCloseServer((HANDLE)context->vcm);
if (context->dynvcReady)

174
server/proxy/pf_server.c
View File

@ -19,27 +19,17 @@
* limitations under the License.
*/
#include <errno.h>
#include <signal.h>
#include <freerdp/freerdp.h>
#include <freerdp/listener.h>
#include <winpr/crt.h>
#include <winpr/ssl.h>
#include <winpr/synch.h>
#include <winpr/string.h>
#include <winpr/path.h>
#include <winpr/winsock.h>
#include <winpr/thread.h>
#include <freerdp/freerdp.h>
#include <freerdp/channels/wtsvc.h>
#include <freerdp/channels/channels.h>
#include <freerdp/constants.h>
#include <freerdp/server/rdpsnd.h>
#include <freerdp/server/rdpgfx.h>
#include "pf_server.h"
#include "pf_log.h"
#include "pf_config.h"
@ -208,9 +198,10 @@ static BOOL pf_server_adjust_monitor_layout(freerdp_peer* peer)
static BOOL pf_server_initialize_peer_connection(freerdp_peer* peer)
{
pServerContext* ps = (pServerContext*)peer->context;
rdpSettings* settings = peer->settings;
proxyData* pdata;
proxyConfig* config;
rdpSettings* settings = peer->settings;
proxyServer* server;
if (!ps)
return FALSE;
@ -220,7 +211,9 @@ static BOOL pf_server_initialize_peer_connection(freerdp_peer* peer)
return FALSE;
proxy_data_set_server_context(pdata, ps);
config = pdata->config = peer->ContextExtra;
server = (proxyServer*)peer->ContextExtra;
config = pdata->config = server->config;
/* currently not supporting GDI orders */
ZeroMemory(settings->OrderSupport, 32);
@ -262,6 +255,11 @@ static BOOL pf_server_initialize_peer_connection(freerdp_peer* peer)
peer->Activate = pf_server_activate;
peer->AdjustMonitorsLayout = pf_server_adjust_monitor_layout;
peer->settings->MultifragMaxRequestSize = 0xFFFFFF; /* FIXME */
if (ArrayList_Add(server->clients, pdata) < 0)
return FALSE;
CountdownEvent_AddCount(server->waitGroup, 1);
return TRUE;
}
@ -281,6 +279,7 @@ static DWORD WINAPI pf_server_handle_peer(LPVOID arg)
rdpContext* pc;
proxyData* pdata;
freerdp_peer* client = (freerdp_peer*)arg;
proxyServer* server = (proxyServer*)client->ContextExtra;
if (!pf_context_init_server_context(client))
goto out_free_peer;
@ -317,7 +316,7 @@ static DWORD WINAPI pf_server_handle_peer(LPVOID arg)
if (status == WAIT_FAILED)
{
WLog_ERR(TAG, "WaitForMultipleObjects failed (errno: %d)", errno);
WLog_ERR(TAG, "WaitForMultipleObjects failed (status: %d)", status);
break;
}
@ -376,6 +375,7 @@ fail:
LOG_INFO(TAG, ps, "freeing server's channels");
pf_server_channels_free(ps);
LOG_INFO(TAG, ps, "freeing proxy data");
ArrayList_Remove(server->clients, pdata);
proxy_data_free(pdata);
freerdp_client_context_free(pc);
client->Close(client);
@ -383,6 +383,8 @@ fail:
out_free_peer:
freerdp_peer_context_free(client);
freerdp_peer_free(client);
CountdownEvent_Signal(server->waitGroup, 1);
ExitThread(0);
return 0;
}
@ -398,11 +400,13 @@ static BOOL pf_server_peer_accepted(freerdp_listener* listener, freerdp_peer* cl
return TRUE;
}
static void pf_server_mainloop(freerdp_listener* listener)
static DWORD WINAPI pf_server_mainloop(LPVOID arg)
{
HANDLE eventHandles[32];
DWORD eventCount;
DWORD status;
proxyServer* server = (proxyServer*)arg;
freerdp_listener* listener = server->listener;
while (1)
{
@ -414,8 +418,12 @@ static void pf_server_mainloop(freerdp_listener* listener)
break;
}
eventHandles[eventCount++] = server->stopEvent;
status = WaitForMultipleObjects(eventCount, eventHandles, FALSE, INFINITE);
if (WaitForSingleObject(server->stopEvent, 0) == WAIT_OBJECT_0)
break;
if (WAIT_FAILED == status)
{
WLog_ERR(TAG, "select failed");
@ -430,33 +438,113 @@ static void pf_server_mainloop(freerdp_listener* listener)
}
listener->Close(listener);
}
int pf_server_start(proxyConfig* config)
{
WSADATA wsaData;
freerdp_listener* listener = freerdp_listener_new();
if (!listener)
return -1;
WTSRegisterWtsApiFunctionTable(FreeRDP_InitWtsApi());
winpr_InitializeSSL(WINPR_SSL_INIT_DEFAULT);
listener->info = config;
listener->PeerAccepted = pf_server_peer_accepted;
if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0)
{
freerdp_listener_free(listener);
return -1;
}
if (listener->Open(listener, config->Host, config->Port))
{
pf_server_mainloop(listener);
}
freerdp_listener_free(listener);
WSACleanup();
ExitThread(0);
return 0;
}
BOOL pf_server_start(proxyServer* server)
{
WSADATA wsaData;
WTSRegisterWtsApiFunctionTable(FreeRDP_InitWtsApi());
winpr_InitializeSSL(WINPR_SSL_INIT_DEFAULT);
if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0)
goto error;
if (!server->listener->Open(server->listener, server->config->Host, server->config->Port))
goto error;
server->thread = CreateThread(NULL, 0, pf_server_mainloop, (void*)server, 0, NULL);
if (!server->thread)
goto error;
return TRUE;
error:
WSACleanup();
return FALSE;
}
static void pf_server_clients_list_client_free(void* obj)
{
proxyData* pdata = (proxyData*)obj;
proxy_data_abort_connect(pdata);
}
proxyServer* pf_server_new(proxyConfig* config)
{
proxyServer* server;
if (!config)
return NULL;
server = calloc(1, sizeof(proxyServer));
if (!server)
return NULL;
server->config = config;
server->stopEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
if (!server->stopEvent)
goto out;
server->clients = ArrayList_New(TRUE);
if (!server->clients)
goto out;
server->clients->object.fnObjectFree = pf_server_clients_list_client_free;
server->waitGroup = CountdownEvent_New(0);
if (!server->waitGroup)
goto out;
server->listener = freerdp_listener_new();
if (!server->listener)
goto out;
server->listener->info = server;
server->listener->PeerAccepted = pf_server_peer_accepted;
return server;
out:
pf_server_free(server);
return NULL;
}
void pf_server_stop(proxyServer* server)
{
HANDLE waitHandle = INVALID_HANDLE_VALUE;
if (!server)
return;
/* clear clients list, also disconnects every client */
ArrayList_Clear(server->clients);
/* block until all clients are disconnected */
waitHandle = CountdownEvent_WaitHandle(server->waitGroup);
if (WaitForSingleObject(waitHandle, INFINITE) != WAIT_OBJECT_0)
WLog_ERR(TAG, "[%s]: WaitForSingleObject failed!", __FUNCTION__);
/* signal main thread to stop and wait for the thread to exit */
SetEvent(server->stopEvent);
WaitForSingleObject(server->thread, INFINITE);
}
void pf_server_free(proxyServer* server)
{
if (!server)
return;
freerdp_listener_free(server->listener);
ArrayList_Free(server->clients);
CountdownEvent_Free(server->waitGroup);
if (server->stopEvent)
CloseHandle(server->stopEvent);
if (server->thread)
CloseHandle(server->thread);
free(server);
}

20
server/proxy/pf_server.h
View File

@ -22,8 +22,26 @@
#ifndef FREERDP_SERVER_PROXY_SERVER_H
#define FREERDP_SERVER_PROXY_SERVER_H
#include <winpr/collections.h>
#include <freerdp/listener.h>
#include "pf_config.h"
int pf_server_start(proxyConfig* config);
typedef struct proxy_server
{
proxyConfig* config;
freerdp_listener* listener;
wArrayList* clients; /* maintain a list of active sessions, for stats */
wCountdownEvent* waitGroup; /* wait group used for gracefull shutdown */
HANDLE thread; /* main server thread - freerdp listener thread */
HANDLE stopEvent; /* an event used to signal the main thread to stop */
} proxyServer;
proxyServer* pf_server_new(proxyConfig* config);
void pf_server_free(proxyServer* server);
BOOL pf_server_start(proxyServer* server);
void pf_server_stop(proxyServer* server);
#endif /* FREERDP_SERVER_PROXY_SERVER_H */