/**
* @brief Responds with teaminfo such as free team num
* @sa CL_ParseTeamInfoMessage
*/
static void SVC_TeamInfo (struct net_stream *s)
{
client_t *cl;
dbuffer msg;
char infoGlobal[MAX_INFO_STRING] = "";
NET_WriteByte(&msg, clc_oob);
NET_WriteRawString(&msg, "teaminfo\n");
Info_SetValueForKey(infoGlobal, sizeof(infoGlobal), "sv_teamplay", Cvar_GetString("sv_teamplay"));
Info_SetValueForKey(infoGlobal, sizeof(infoGlobal), "sv_maxteams", Cvar_GetString("sv_maxteams"));
Info_SetValueForKey(infoGlobal, sizeof(infoGlobal), "sv_maxplayersperteam", Cvar_GetString("sv_maxplayersperteam"));
NET_WriteString(&msg, infoGlobal);
cl = NULL;
while ((cl = SV_GetNextClient(cl)) != NULL) {
if (cl->state >= cs_connected) {
char infoPlayer[MAX_INFO_STRING] = "";
/* show players that already have a team with their teamnum */
int teamId = svs.ge->ClientGetTeamNum(cl->player);
if (!teamId)
teamId = TEAM_NO_ACTIVE;
Info_SetValueForKeyAsInteger(infoPlayer, sizeof(infoPlayer), "cl_team", teamId);
Info_SetValueForKeyAsInteger(infoPlayer, sizeof(infoPlayer), "cl_ready", svs.ge->ClientIsReady(cl->player));
Info_SetValueForKey(infoPlayer, sizeof(infoPlayer), "cl_name", cl->name);
NET_WriteString(&msg, infoPlayer);
}
}
NET_WriteByte(&msg, 0);
NET_WriteMsg(s, msg);
}
void NET_WriteQueryData(net_packet_t *packet, net_querydata_t *query)
{
NET_WriteString(packet, query->version);
NET_WriteInt8(packet, query->server_state);
NET_WriteInt8(packet, query->num_players);
NET_WriteInt8(packet, query->max_players);
NET_WriteInt8(packet, query->gamemode);
NET_WriteInt8(packet, query->gamemission);
NET_WriteString(packet, query->description);
}
static void NET_CL_SendSYN(net_connect_data_t *data)
{
net_packet_t *packet;
packet = NET_NewPacket(10);
NET_WriteInt16(packet, NET_PACKET_TYPE_SYN);
NET_WriteInt32(packet, NET_MAGIC_NUMBER);
NET_WriteString(packet, PACKAGE_STRING);
NET_WriteConnectData(packet, data);
NET_WriteString(packet, net_player_name);
NET_Conn_SendPacket(&client_connection, packet);
NET_FreePacket(packet);
}
/**
* @brief Called during startup of mission to send team info
*/
void GAME_SpawnSoldiers (void)
{
const cgame_export_t *list = GAME_GetCurrentType();
qboolean spawnStatus;
/* this callback is responsible to set up the cl.chrList */
if (list && list->Spawn)
spawnStatus = list->Spawn();
else
spawnStatus = GAME_Spawn();
if (spawnStatus && cl.chrList.num > 0) {
struct dbuffer *msg;
/* send team info */
msg = new_dbuffer();
GAME_SendCurrentTeamSpawningInfo(msg, &cl.chrList);
NET_WriteMsg(cls.netStream, msg);
msg = new_dbuffer();
NET_WriteByte(msg, clc_stringcmd);
NET_WriteString(msg, "spawn\n");
NET_WriteMsg(cls.netStream, msg);
GAME_InitializeBattlescape(&cl.chrList);
}
}
/**
* @brief
* @note Called after precache was sent from the server
* @sa SV_Configstrings_f
* @sa CL_Precache_f
*/
void CL_RequestNextDownload (void)
{
if (cls.state != ca_connected) {
Com_Printf("CL_RequestNextDownload: Not connected (%i)\n", cls.state);
return;
}
/* Use the map data from the server */
cl.mapTiles = SV_GetMapTiles();
cl.mapData = SV_GetMapData();
/* as a multiplayer client we have to load the map here and
* check the compatibility with the server */
if (!Com_ServerState() && !CL_CanMultiplayerStart())
return;
CL_ViewLoadMedia();
dbuffer msg(7);
/* send begin */
/* this will activate the render process (see client state ca_active) */
NET_WriteByte(&msg, clc_stringcmd);
/* see CL_StartGame */
NET_WriteString(&msg, NET_STATE_BEGIN "\n");
NET_WriteMsg(cls.netStream, msg);
cls.waitingForStart = CL_Milliseconds();
S_MumbleLink();
}
char *NET_EndSecureDemo(sha1_digest_t demo_hash)
{
net_packet_t *request, *response;
net_addr_t *master_addr;
char *signature;
master_addr = NET_Query_ResolveMaster(query_context);
// Construct end request and send to master server.
request = NET_NewPacket(10);
NET_WriteInt16(request, NET_MASTER_PACKET_TYPE_SIGN_END);
NET_WriteSHA1Sum(request, demo_hash);
NET_WriteString(request, securedemo_start_message);
NET_SendPacket(master_addr, request);
NET_FreePacket(request);
// Block for response. The response packet simply contains a string
// with the ASCII signature.
response = BlockForPacket(master_addr,
NET_MASTER_PACKET_TYPE_SIGN_END_RESPONSE,
SIGNATURE_TIMEOUT_SECS * 1000);
if (response == NULL)
{
return NULL;
}
signature = NET_ReadString(response);
NET_FreePacket(response);
return signature;
}
/**
* @brief Sets the @c cls.state to @c ca_disconnected and informs the server
* @sa CL_Drop
* @note Goes from a connected state to disconnected state
* Sends a disconnect message to the server
* This is also called on @c Com_Error, so it shouldn't cause any errors
*/
void CL_Disconnect (void)
{
if (cls.state < ca_connecting)
return;
Com_Printf("Disconnecting...\n");
/* send a disconnect message to the server */
if (!Com_ServerState()) {
dbuffer msg;
NET_WriteByte(&msg, clc_stringcmd);
NET_WriteString(&msg, NET_STATE_DISCONNECT "\n");
NET_WriteMsg(cls.netStream, msg);
/* make sure, that this is send */
NET_Wait(0);
}
NET_StreamFinished(cls.netStream);
cls.netStream = nullptr;
CL_ClearState();
S_Stop();
R_ShutdownModels(false);
R_FreeWorldImages();
CL_SetClientState(ca_disconnected);
CL_ClearBattlescapeEvents();
GAME_EndBattlescape();
}
/**
* @brief Search the index in the config strings relative to a given start
* @param name The value of the config string to search the index for
* @param start The relative start point for the search
* @param max The max. searched entries in the config string before giving up
* @param create if @c true the value will get written into the config strings (appended)
* @return @c 0 if not found
*/
static unsigned int SV_FindIndex (const char *name, int start, int max, qboolean create)
{
int i;
if (!name || !name[0])
return 0;
for (i = 1; i < max && SV_GetConfigString(start + i)[0] != '\0'; i++) {
const char *configString = SV_GetConfigString(start + i);
if (Q_streq(configString, name))
return i;
}
if (!create)
return 0;
if (i == max)
Com_Error(ERR_DROP, "*Index: overflow '%s' start: %i, max: %i", name, start, max);
SV_SetConfigString(start + i, name);
if (Com_ServerState() != ss_loading) { /* send the update to everyone */
struct dbuffer *msg = new_dbuffer();
NET_WriteByte(msg, svc_configstring);
NET_WriteShort(msg, start + i);
NET_WriteString(msg, name);
SV_Multicast(~0, msg);
}
return i;
}
/**
* @brief Called when the player is totally leaving the server, either willingly
* or unwillingly. This is NOT called if the entire server is quitting
* or crashing.
*/
void SV_DropClient (client_t * drop, const char *message)
{
/* add the disconnect */
dbuffer msg(2 + strlen(message));
NET_WriteByte(&msg, svc_disconnect);
NET_WriteString(&msg, message);
NET_WriteMsg(drop->stream, msg);
SV_BroadcastPrintf(PRINT_CHAT, "%s was dropped from the server - reason: %s\n", drop->name, message);
if (drop->state == cs_spawned || drop->state == cs_spawning) {
/* call the prog function for removing a client */
/* this will remove the body, among other things */
const ScopedMutex scopedMutex(svs.serverMutex);
svs.ge->ClientDisconnect(drop->player);
}
NET_StreamFinished(drop->stream);
drop->stream = NULL;
drop->player->inuse = false;
SV_SetClientState(drop, cs_free);
drop->name[0] = 0;
if (svs.abandon) {
int count = 0;
client_t *cl = NULL;
while ((cl = SV_GetNextClient(cl)) != NULL)
if (cl->state >= cs_connected)
count++;
if (count == 0)
svs.killserver = true;
}
}
static void NET_CL_SendSYN(void)
{
net_packet_t *packet;
packet = NET_NewPacket(10);
NET_WriteInt16(packet, NET_PACKET_TYPE_SYN);
NET_WriteInt32(packet, NET_MAGIC_NUMBER);
NET_WriteString(packet, PACKAGE_STRING);
NET_WriteInt16(packet, gamemode);
NET_WriteInt16(packet, gamemission);
NET_WriteInt8(packet, lowres_turn);
NET_WriteInt8(packet, drone);
NET_WriteMD5Sum(packet, net_local_wad_md5sum);
NET_WriteMD5Sum(packet, net_local_deh_md5sum);
NET_WriteInt8(packet, net_local_is_freedoom);
NET_WriteString(packet, net_player_name);
NET_Conn_SendPacket(&client_connection, packet);
NET_FreePacket(packet);
}
static void NET_SV_SendReject(net_addr_t *addr, char *msg)
{
net_packet_t *packet;
packet = NET_NewPacket(10);
NET_WriteInt16(packet, NET_PACKET_TYPE_REJECTED);
NET_WriteString(packet, msg);
NET_SendPacket(addr, packet);
NET_FreePacket(packet);
}
/**
* @brief Responds with teaminfo such as free team num
* @sa CL_ParseTeamInfoMessage
*/
static void SVC_TeamInfo (struct net_stream* s)
{
if (SVC_RateLimitAddress(*s)) {
Com_DPrintf(DEBUG_SERVER, "SVC_TeamInfo: rate limit from %s exceeded, dropping request\n", NET_StreamToString(s));
return;
}
/* Allow getinfo to be DoSed relatively easily, but prevent excess outbound bandwidth usage when being flooded inbound */
if (SVC_RateLimit(&outboundLeakyBucket)) {
Com_DPrintf(DEBUG_SERVER, "SVC_TeamInfo: rate limit exceeded, dropping request\n");
return;
}
char infoGlobal[MAX_INFO_STRING] = "";
Info_SetValueForKey(infoGlobal, sizeof(infoGlobal), "sv_teamplay", Cvar_GetString("sv_teamplay"));
Info_SetValueForKey(infoGlobal, sizeof(infoGlobal), "sv_maxteams", Cvar_GetString("sv_maxteams"));
Info_SetValueForKey(infoGlobal, sizeof(infoGlobal), "sv_maxplayersperteam", Cvar_GetString("sv_maxplayersperteam"));
dbuffer msg;
NET_WriteByte(&msg, svc_oob);
NET_WriteRawString(&msg, "teaminfo\n");
NET_WriteString(&msg, infoGlobal);
client_t* cl = nullptr;
while ((cl = SV_GetNextClient(cl)) != nullptr) {
if (cl->state < cs_connected)
continue;
char infoPlayer[MAX_INFO_STRING] = "";
/* show players that already have a team with their teamnum */
int teamId = svs.ge->ClientGetTeamNum(*cl->player);
if (!teamId)
teamId = TEAM_NO_ACTIVE;
Info_SetValueForKeyAsInteger(infoPlayer, sizeof(infoPlayer), "cl_team", teamId);
Info_SetValueForKeyAsInteger(infoPlayer, sizeof(infoPlayer), "cl_ready", svs.ge->ClientIsReady(cl->player));
Info_SetValueForKey(infoPlayer, sizeof(infoPlayer), "cl_name", cl->name);
NET_WriteString(&msg, infoPlayer);
}
NET_WriteByte(&msg, 0);
NET_WriteMsg(s, msg);
}
/**
* @brief Send the character information to the server that is needed to spawn the soldiers of the player.
* @param[out] buf The net channel buffer to write the character data into.
* @param[in] chr The character to get the data from.
*/
static void GAME_NetSendCharacter (struct dbuffer * buf, const character_t *chr)
{
int j;
if (!chr)
Com_Error(ERR_DROP, "No character given");
if (chr->fieldSize != ACTOR_SIZE_2x2 && chr->fieldSize != ACTOR_SIZE_NORMAL)
Com_Error(ERR_DROP, "Invalid character size given for character '%s': %i",
chr->name, chr->fieldSize);
if (chr->teamDef == NULL)
Com_Error(ERR_DROP, "Character with no teamdef set (%s)", chr->name);
NET_WriteByte(buf, chr->fieldSize);
NET_WriteShort(buf, chr->ucn);
NET_WriteString(buf, chr->name);
/* model */
NET_WriteString(buf, chr->path);
NET_WriteString(buf, chr->body);
NET_WriteString(buf, chr->head);
NET_WriteByte(buf, chr->skin);
NET_WriteShort(buf, chr->HP);
NET_WriteShort(buf, chr->maxHP);
NET_WriteByte(buf, chr->teamDef->idx);
NET_WriteByte(buf, chr->gender);
NET_WriteByte(buf, chr->STUN);
NET_WriteByte(buf, chr->morale);
for (j = 0; j < SKILL_NUM_TYPES + 1; j++)
NET_WriteLong(buf, chr->score.experience[j]);
for (j = 0; j < SKILL_NUM_TYPES; j++)
NET_WriteByte(buf, chr->score.skills[j]);
for (j = 0; j < SKILL_NUM_TYPES + 1; j++)
NET_WriteByte(buf, chr->score.initialSkills[j]);
for (j = 0; j < KILLED_NUM_TYPES; j++)
NET_WriteShort(buf, chr->score.kills[j]);
for (j = 0; j < KILLED_NUM_TYPES; j++)
NET_WriteShort(buf, chr->score.stuns[j]);
NET_WriteShort(buf, chr->score.assignedMissions);
}
void NET_WriteWaitData(net_packet_t *packet, net_waitdata_t *data)
{
int i;
NET_WriteInt8(packet, data->num_players);
NET_WriteInt8(packet, data->num_drones);
NET_WriteInt8(packet, data->ready_players);
NET_WriteInt8(packet, data->max_players);
NET_WriteInt8(packet, data->is_controller);
NET_WriteInt8(packet, data->consoleplayer);
for (i = 0; i < data->num_players && i < NET_MAXPLAYERS; ++i)
{
NET_WriteString(packet, data->player_names[i]);
NET_WriteString(packet, data->player_addrs[i]);
}
NET_WriteSHA1Sum(packet, data->wad_sha1sum);
NET_WriteSHA1Sum(packet, data->deh_sha1sum);
NET_WriteInt8(packet, data->is_freedoom);
}
static void NET_SV_SendReject(net_addr_t *addr, const char *msg)
{
net_packet_t *packet;
NET_Log("server: sending reject to %s", NET_AddrToString(addr));
packet = NET_NewPacket(10);
NET_WriteInt16(packet, NET_PACKET_TYPE_REJECTED);
NET_WriteString(packet, msg);
NET_SendPacket(addr, packet);
NET_FreePacket(packet);
}
/**
* @brief Send the userinfo to the server (and to all other clients)
* when they changed (CVAR_USERINFO)
* @sa CL_Connect
*/
static void CL_SendChangedUserinfos (void)
{
/* send a userinfo update if needed */
if (cls.state < ca_connected)
return;
if (!Com_IsUserinfoModified())
return;
char info[MAX_INFO_STRING];
const char* userInfo = Cvar_Userinfo(info, sizeof(info));
dbuffer msg(strlen(userInfo) + 2);
NET_WriteByte(&msg, clc_userinfo);
NET_WriteString(&msg, userInfo);
NET_WriteMsg(cls.netStream, msg);
Com_SetUserinfoModified(false);
}
static void NET_SV_SendConsoleMessage(net_client_t *client, char *s, ...)
{
char buf[1024];
va_list args;
net_packet_t *packet;
va_start(args, s);
vsnprintf(buf, sizeof(buf), s, args);
va_end(args);
packet = NET_Conn_NewReliable(&client->connection,
NET_PACKET_TYPE_CONSOLE_MESSAGE);
NET_WriteString(packet, buf);
}
/**
* @brief Used by SV_Shutdown to send a final message to all
* connected clients before the server goes down.
* @sa SV_Shutdown
*/
static void SV_FinalMessage (const char *message, bool reconnect)
{
client_t *cl;
dbuffer msg(2 + strlen(message));
if (reconnect)
NET_WriteByte(&msg, svc_reconnect);
else
NET_WriteByte(&msg, svc_disconnect);
NET_WriteString(&msg, message);
cl = NULL;
while ((cl = SV_GetNextClient(cl)) != NULL)
if (cl->state >= cs_connected) {
NET_WriteConstMsg(cl->stream, msg);
NET_StreamFinished(cl->stream);
cl->stream = NULL;
}
/* make sure, that this is send */
NET_Wait(0);
}
/**
* @sa CL_ParseConfigString
*/
static void SV_Configstring (int index, const char *fmt, ...)
{
char val[MAX_TOKEN_CHARS * MAX_TILESTRINGS];
va_list argptr;
if (index < 0 || index >= MAX_CONFIGSTRINGS)
Com_Error(ERR_DROP, "configstring: bad index %i", index);
va_start(argptr, fmt);
Q_vsnprintf(val, sizeof(val), fmt, argptr);
va_end(argptr);
SV_SetConfigString(index, val);
if (Com_ServerState() != ss_loading) { /* send the update to everyone */
struct dbuffer *msg = new_dbuffer();
NET_WriteByte(msg, svc_configstring);
NET_WriteShort(msg, index);
NET_WriteString(msg, val);
/* send to all clients */
SV_Multicast(~0, msg);
}
}
/**
* @brief If origin is NULL, the origin is determined from the entity origin or the midpoint of the entity box for bmodels.
*/
void SV_StartSound (int mask, const vec3_t origin, const edict_t *entity, const char *sound)
{
vec3_t origin_v;
struct dbuffer *msg;
/* use the entity origin unless it is a bmodel or explicitly specified */
if (!origin) {
origin = origin_v;
if (entity->solid == SOLID_BSP) {
VectorCenterFromMinsMaxs(entity->mins, entity->maxs, origin_v);
VectorAdd(entity->origin, origin_v, origin_v);
} else {
VectorCopy(entity->origin, origin_v);
}
}
msg = new_dbuffer();
NET_WriteByte(msg, svc_sound);
NET_WriteString(msg, sound);
NET_WritePos(msg, origin);
SV_Multicast(mask, msg);
}
/**
* @sa CL_ParseConfigString
*/
static void SV_Configstring (int index, const char *fmt, ...)
{
char val[MAX_TOKEN_CHARS * MAX_TILESTRINGS];
va_list argptr;
if (!Com_CheckConfigStringIndex(index))
SV_error("configstring: bad index %i", index);
va_start(argptr, fmt);
Q_vsnprintf(val, sizeof(val), fmt, argptr);
va_end(argptr);
SV_SetConfigString(index, val);
if (Com_ServerState() != ss_loading) { /* send the update to everyone */
dbuffer msg(4 + strlen(val));
NET_WriteByte(&msg, svc_configstring);
NET_WriteShort(&msg, index);
NET_WriteString(&msg, val);
/* send to all clients */
SV_Multicast(~0, msg);
}
}
static void NET_SV_ParseSYN(net_packet_t *packet, net_client_t *client,
net_addr_t *addr)
{
unsigned int magic;
net_connect_data_t data;
net_packet_t *reply;
net_protocol_t protocol;
char *player_name;
char *client_version;
int num_players;
int i;
NET_Log("server: processing SYN packet");
// Read the magic number and check it is the expected one.
if (!NET_ReadInt32(packet, &magic))
{
NET_Log("server: error: no magic number for SYN");
return;
}
switch (magic)
{
case NET_MAGIC_NUMBER:
break;
case NET_OLD_MAGIC_NUMBER:
NET_Log("server: error: client using old magic number: %d", magic);
NET_SV_SendReject(addr,
"You are using an old client version that is not supported by "
"this server. This server is running " PACKAGE_STRING ".");
return;
default:
NET_Log("server: error: wrong magic number: %d", magic);
return;
}
// Read the client version string. We actually now only use this when
// sending a reject message, as we only reject if we can't negotiate a
// common protocol (below).
client_version = NET_ReadString(packet);
if (client_version == NULL)
{
NET_Log("server: error: no version from client");
return;
}
// Read the client's list of accepted protocols. Net play between forks
// of Chocolate Doom is accepted provided that they can negotiate a
// common accepted protocol.
protocol = NET_ReadProtocolList(packet);
if (protocol == NET_PROTOCOL_UNKNOWN)
{
char reject_msg[256];
M_snprintf(reject_msg, sizeof(reject_msg),
"Version mismatch: server version is: " PACKAGE_STRING "; "
"client is: %s. No common compatible protocol could be "
"negotiated.", client_version);
NET_SV_SendReject(addr, reject_msg);
NET_Log("server: error: no common protocol");
return;
}
// Read connect data, and check that the game mode/mission are valid
// and the max_players value is in a sensible range.
if (!NET_ReadConnectData(packet, &data))
{
NET_Log("server: error: failed to read connect data");
return;
}
if (!D_ValidGameMode(data.gamemission, data.gamemode)
|| data.max_players > NET_MAXPLAYERS)
{
NET_Log("server: error: invalid connect data, max_players=%d, "
"gamemission=%d, gamemode=%d",
data.max_players, data.gamemission, data.gamemode);
return;
}
// Read the player's name
player_name = NET_ReadString(packet);
if (player_name == NULL)
{
NET_Log("server: error: failed to read player name");
return;
}
// At this point we have received a valid SYN.
// Not accepting new connections?
if (server_state != SERVER_WAITING_LAUNCH)
{
NET_Log("server: error: not in waiting launch state, server_state=%d",
server_state);
NET_SV_SendReject(addr,
"Server is not currently accepting connections");
return;
}
// Before accepting a new client, check that there is a slot free.
NET_SV_AssignPlayers();
num_players = NET_SV_NumPlayers();
if ((!data.drone && num_players >= NET_SV_MaxPlayers())
|| NET_SV_NumClients() >= MAXNETNODES)
{
NET_Log("server: no more players, num_players=%d, max=%d",
num_players, NET_SV_MaxPlayers());
NET_SV_SendReject(addr, "Server is full!");
return;
}
// TODO: Add server option to allow rejecting clients which set
// lowres_turn. This is potentially desirable as the presence of such
// clients affects turning resolution.
// Adopt the game mode and mission of the first connecting client:
if (num_players == 0 && !data.drone)
{
sv_gamemode = data.gamemode;
sv_gamemission = data.gamemission;
NET_Log("server: new game, mode=%d, mission=%d",
sv_gamemode, sv_gamemission);
}
// Check the connecting client is playing the same game as all
// the other clients
if (data.gamemode != sv_gamemode || data.gamemission != sv_gamemission)
{
char msg[128];
NET_Log("server: wrong mode/mission, %d != %d || %d != %d",
data.gamemode, sv_gamemode, data.gamemission, sv_gamemission);
M_snprintf(msg, sizeof(msg),
"Game mismatch: server is %s (%s), client is %s (%s)",
D_GameMissionString(sv_gamemission),
D_GameModeString(sv_gamemode),
D_GameMissionString(data.gamemission),
D_GameModeString(data.gamemode));
NET_SV_SendReject(addr, msg);
return;
}
// Allocate a client slot if there isn't one already
if (client == NULL)
{
// find a slot, or return if none found
for (i=0; i<MAXNETNODES; ++i)
{
if (!clients[i].active)
{
client = &clients[i];
break;
}
}
if (client == NULL)
{
return;
}
}
else
{
// If this is a recently-disconnected client, deactivate
// to allow immediate reconnection
if (client->connection.state == NET_CONN_STATE_DISCONNECTED)
{
client->active = false;
}
}
// Client already connected?
if (client->active)
{
NET_Log("server: client is already initialized (duplicate SYN?)");
return;
}
// Activate, initialize connection
NET_SV_InitNewClient(client, addr, protocol);
// Save the SHA1 checksums and other details.
memcpy(client->wad_sha1sum, data.wad_sha1sum, sizeof(sha1_digest_t));
memcpy(client->deh_sha1sum, data.deh_sha1sum, sizeof(sha1_digest_t));
client->is_freedoom = data.is_freedoom;
client->max_players = data.max_players;
client->name = M_StringDuplicate(player_name);
client->recording_lowres = data.lowres_turn;
client->drone = data.drone;
client->player_class = data.player_class;
// Send a reply back to the client, indicating a successful connection
// and specifying the protocol that will be used for communications.
reply = NET_Conn_NewReliable(&client->connection, NET_PACKET_TYPE_SYN);
NET_WriteString(reply, PACKAGE_STRING);
NET_WriteProtocol(reply, protocol);
}
/**
* @brief Responses to broadcasts, etc
* @sa CL_ReadPackets
* @sa CL_Frame
* @sa SVC_DirectConnect
* @param[in,out] msg The client stream message buffer to read from
*/
static void CL_ConnectionlessPacket (dbuffer* msg)
{
char s[512];
NET_ReadStringLine(msg, s, sizeof(s));
Cmd_TokenizeString(s, false);
const char* c = Cmd_Argv(0);
Com_DPrintf(DEBUG_CLIENT, "server OOB: %s (%s)\n", c, Cmd_Args());
/* server connection */
if (Q_streq(c, CL_CMD_CLIENT_CONNECT)) {
int i;
for (i = 1; i < Cmd_Argc(); i++) {
if (char const* const p = Q_strstart(Cmd_Argv(i), "dlserver=")) {
Com_sprintf(cls.downloadReferer, sizeof(cls.downloadReferer), "ufo://%s", cls.servername);
CL_SetHTTPServer(p);
if (cls.downloadServer[0])
Com_Printf("HTTP downloading enabled, URL: %s\n", cls.downloadServer);
}
}
if (cls.state == ca_connected) {
Com_Printf("Dup connect received. Ignored.\n");
return;
}
dbuffer buf(5);
NET_WriteByte(&buf, clc_stringcmd);
NET_WriteString(&buf, NET_STATE_NEW "\n");
NET_WriteMsg(cls.netStream, buf);
GAME_InitMissionBriefing(_("Loading"));
return;
}
/* remote command from gui front end */
if (Q_streq(c, CL_CMD_COMMAND)) {
if (!NET_StreamIsLoopback(cls.netStream)) {
Com_Printf("Command packet from remote host. Ignored.\n");
return;
} else {
char str[512];
NET_ReadString(msg, str, sizeof(str));
Cbuf_AddText("%s\n", str);
}
return;
}
/* ping from server */
if (Q_streq(c, CL_CMD_PING)) {
NET_OOB_Printf(cls.netStream, SV_CMD_ACK);
return;
}
/* echo request from server */
if (Q_streq(c, CL_CMD_ECHO)) {
NET_OOB_Printf(cls.netStream, "%s", Cmd_Argv(1));
return;
}
/* print */
if (Q_streq(c, SV_CMD_PRINT)) {
NET_ReadString(msg, popupText, sizeof(popupText));
/* special reject messages needs proper handling */
if (strstr(popupText, REJ_PASSWORD_REQUIRED_OR_INCORRECT)) {
UI_PushWindow("serverpassword");
if (Q_strvalid(Cvar_GetString("password"))) {
Cvar_Set("password", "");
CL_Drop();
UI_Popup(_("Connection failure"), _("The password you specified was wrong."));
} else {
CL_Drop();
UI_Popup(_("Connection failure"), _("This server requires a password."));
}
} else if (strstr(popupText, REJ_SERVER_FULL)) {
CL_Drop();
UI_Popup(_("Connection failure"), _("This server is full."));
} else if (strstr(popupText, REJ_BANNED)) {
CL_Drop();
UI_Popup(_("Connection failure"), _("You are banned on this server."));
} else if (strstr(popupText, REJ_GAME_ALREADY_STARTED)) {
CL_Drop();
UI_Popup(_("Connection failure"), _("The game has already started."));
} else if (strstr(popupText, REJ_SERVER_VERSION_MISMATCH)) {
CL_Drop();
UI_Popup(_("Connection failure"), _("The server is running a different version of the game."));
} else if (strstr(popupText, BAD_RCON_PASSWORD)) {
Cvar_Set("rcon_password", "");
UI_Popup(_("Bad rcon password"), _("The rcon password you specified was wrong."));
} else if (strstr(popupText, REJ_CONNECTION_REFUSED)) {
CL_Drop();
UI_Popup(_("Connection failure"), _("The server refused the connection."));
} else if (Q_strvalid(popupText)) {
UI_Popup(_("Notice"), _(popupText));
}
return;
}
if (!GAME_HandleServerCommand(c, msg))
Com_Printf("Unknown command received \"%s\"\n", c);
}
static void NET_SV_SendWaitingData(net_client_t *client)
{
net_packet_t *packet;
net_client_t *controller;
int num_players;
int i;
NET_SV_AssignPlayers();
controller = NET_SV_Controller();
num_players = NET_SV_NumPlayers();
// time to send the client another status packet
packet = NET_NewPacket(10);
NET_WriteInt16(packet, NET_PACKET_TYPE_WAITING_DATA);
// include the number of players waiting
NET_WriteInt8(packet, num_players);
// send the number of drone clients
NET_WriteInt8(packet, NET_SV_NumDrones());
// indicate whether the client is the controller
NET_WriteInt8(packet, client == controller);
// send the player number of this client
NET_WriteInt8(packet, client->player_number);
// send the addresses of all players
for (i=0; i<num_players; ++i)
{
char *addr;
// name
NET_WriteString(packet, sv_players[i]->name);
// address
addr = NET_AddrToString(sv_players[i]->addr);
NET_WriteString(packet, addr);
}
// Send the WAD and dehacked checksums of the controlling client.
if (controller != NULL)
{
NET_WriteMD5Sum(packet, controller->wad_md5sum);
NET_WriteMD5Sum(packet, controller->deh_md5sum);
NET_WriteInt8(packet, controller->is_freedoom);
}
else
{
NET_WriteMD5Sum(packet, client->wad_md5sum);
NET_WriteMD5Sum(packet, client->deh_md5sum);
NET_WriteInt8(packet, client->is_freedoom);
}
// send packet to client and free
NET_Conn_SendPacket(&client->connection, packet);
NET_FreePacket(packet);
}
static void SV_WriteString (const char *s)
{
NET_WriteString(sv->pendingEvent.buf, s);
}
/**
* @brief Sends the first message from the server to a connected client.
* This will be sent on the initial connection and upon each server load.
* Client reads via CL_ParseServerData in cl_parse.c
* @sa CL_Reconnect_f
* @sa CL_ConnectionlessPacket
*/
static void SV_New_f (client_t *cl)
{
Com_DPrintf(DEBUG_SERVER, "New() from %s\n", cl->name);
if (cl->state != cs_connected) {
if (cl->state == cs_spawning) {
/* client typed 'reconnect/new' while connecting. */
Com_Printf("SV_New_f: client typed 'reconnect/new' while connecting\n");
SV_ClientCommand(cl, "\ndisconnect\nreconnect\n");
SV_DropClient(cl, "");
} else
Com_DPrintf(DEBUG_SERVER, "WARNING: Illegal 'new' from %s, client state %d. This shouldn't happen...\n", cl->name, cl->state);
return;
}
/* client state to prevent multiple new from causing high cpu / overflows. */
SV_SetClientState(cl, cs_spawning);
/* serverdata needs to go over for all types of servers
* to make sure the protocol is right, and to set the gamedir */
/* send the serverdata */
{
const int playernum = cl - SV_GetClient(0);
struct dbuffer *msg = new_dbuffer();
NET_WriteByte(msg, svc_serverdata);
NET_WriteLong(msg, PROTOCOL_VERSION);
NET_WriteShort(msg, playernum);
/* send full levelname */
NET_WriteString(msg, SV_GetConfigString(CS_NAME));
NET_WriteMsg(cl->stream, msg);
}
/* game server */
if (Com_ServerState() == ss_game) {
int i;
for (i = 0; i < MAX_CONFIGSTRINGS; i++) {
const char *configString;
/* CS_TILES and CS_POSITIONS can stretch over multiple configstrings,
* so don't send the middle parts again. */
if (i > CS_TILES && i < CS_POSITIONS)
continue;
if (i > CS_POSITIONS && i < CS_MODELS)
continue;
configString = SV_GetConfigString(i);
if (configString[0] != '\0') {
struct dbuffer *msg = new_dbuffer();
Com_DPrintf(DEBUG_SERVER, "sending configstring %d: %s\n", i, configString);
NET_WriteByte(msg, svc_configstring);
NET_WriteShort(msg, i);
NET_WriteString(msg, configString);
/* enqueue and free msg */
NET_WriteMsg(cl->stream, msg);
}
}
}
SV_ClientCommand(cl, "precache\n");
}
