network.c

   1 #include "player.h"
   2 #include "network.h"
   3 #include "network_msg.h"
   4 #include "network_common.h"
   5 #include "player_remote.h"
   6
   7 static void scores_update(void);
   8
   9 static int packet_minsize( SteamNetworkingMessage_t *msg, u32 size ){
  10    if( msg->m_cbSize < size ) {
  11       vg_error( "Invalid packet size (must be at least %u)\n", size );
  12       return 0;
  13    }
  14    else{
  15       return 1;
  16    }
  17 }
  18
  19 static void on_auth_ticket_recieved( void *result, void *context ){
  20    EncryptedAppTicketResponse_t *response = result;
  21
  22    if( response->m_eResult == k_EResultOK ){
  23       vg_info( "  New app ticket ready\n" );
  24    }
  25    else{
  26       vg_warn( "  Could not request new encrypted app ticket (%u)\n",
  27                   response->m_eResult );
  28    }
  29
  30    if( SteamAPI_ISteamUser_GetEncryptedAppTicket( hSteamUser,
  31             network_client.app_symmetric_key,
  32             vg_list_size(network_client.app_symmetric_key),
  33             &network_client.app_key_length )){
  34       vg_success( "  Loaded app ticket\n" );
  35    }
  36    else{
  37       vg_error( "  No ticket availible\n" );
  38       network_client.app_key_length = 0;
  39    }
  40 }
  41
  42 static void request_auth_ticket(void){
  43    /*
  44     * TODO Check for one thats cached on the disk and load it.
  45     * This might be OK though because steam seems to cache the result
  46     */
  47
  48    vg_info( "Requesting new authorization ticket\n" );
  49
  50    vg_steam_async_call *call = vg_alloc_async_steam_api_call();
  51    call->userdata = NULL;
  52    call->p_handler = on_auth_ticket_recieved;
  53    call->id =
  54       SteamAPI_ISteamUser_RequestEncryptedAppTicket( hSteamUser, NULL, 0 );
  55 }
  56
  57 #if 0
  58 static void send_score_request(void){
  59    vg_info( "Requesting scores\n" );
  60    netmsg_scores_request req;
  61    req.inetmsg_id = k_inetmsg_scores_request;
  62
  63    SteamAPI_ISteamNetworkingSockets_SendMessageToConnection(
  64          hSteamNetworkingSockets, network_client.remote,
  65          &req, sizeof(netmsg_scores_request),
  66          k_nSteamNetworkingSend_Reliable, NULL );
  67 }
  68
  69 static void send_score_update(void){
  70    vg_info( "Sending scores\n" );
  71    u32 size = sizeof(netmsg_set_score) +
  72                   vg_list_size(track_infos)*sizeof(struct netmsg_score_record);
  73    netmsg_set_score *setscore = alloca( size );
  74    setscore->inetmsg_id = k_inetmsg_set_score;
  75
  76    int count = 0;
  77    for( u32 i=0; i<vg_list_size(track_infos); i++ ){
  78       if( track_infos[i].push ){
  79          track_infos[i].push = 0;
  80
  81 #if 0
  82          highscore_record *user_record = highscore_find_user_record( 0, i );
  83
  84          if( !user_record ){
  85             vg_error( "No score set but tried to upload for track %u\n", i );
  86             continue;
  87          }
  88 #endif
  89          highscore_record *user_record = &track_infos[i].record;
  90
  91          setscore->records[count].trackid = i;
  92          setscore->records[count].playerid = 0;
  93          setscore->records[count].points = user_record->points;
  94          setscore->records[count].time = user_record->time;
  95
  96          count ++;
  97       }
  98    }
  99
 100    if( count == 0 ) return;
 101    u32 send_size = sizeof(netmsg_set_score) +
 102                   count*sizeof(struct netmsg_score_record);
 103    setscore->record_count = count;
 104
 105    SteamAPI_ISteamNetworkingSockets_SendMessageToConnection(
 106          hSteamNetworkingSockets, network_client.remote, setscore, send_size,
 107          k_nSteamNetworkingSend_Reliable, NULL );
 108 }
 109
 110 static void send_nickname(void){
 111    netmsg_set_nickname nick;
 112    nick.inetmsg_id = k_inetmsg_set_nickname;
 113
 114    memset( nick.nickname, 0, 16 );
 115    vg_strncpy( steam_username_at_startup, nick.nickname, 16,
 116                k_strncpy_allow_cutoff );
 117
 118    SteamAPI_ISteamNetworkingSockets_SendMessageToConnection(
 119          hSteamNetworkingSockets, network_client.remote,
 120          &nick, sizeof(netmsg_set_nickname),
 121          k_nSteamNetworkingSend_Reliable, NULL );
 122
 123    network_client.name_update = 0;
 124 }
 125 #endif
 126
 127 #if 0
 128 static void server_routine_update(void){
 129    send_score_update();
 130    send_score_request();
 131 }
 132 #endif
 133
 134 static void network_send_username(void){
 135    netmsg_playerusername *update = alloca( sizeof(netmsg_playerusername)+
 136                                            NETWORK_USERNAME_MAX );
 137    update->inetmsg_id = k_inetmsg_playerusername;
 138    update->index = 0xffffffff;
 139
 140    ISteamFriends *hSteamFriends = SteamAPI_SteamFriends();
 141    const char *username = SteamAPI_ISteamFriends_GetPersonaName(hSteamFriends);
 142    u32 chs = str_utf8_collapse( username, update->name, NETWORK_USERNAME_MAX );
 143
 144    SteamAPI_ISteamNetworkingSockets_SendMessageToConnection(
 145          hSteamNetworkingSockets, network_client.remote,
 146          update, sizeof(netmsg_playerusername)+chs+1,
 147          k_nSteamNetworkingSend_Reliable, NULL );
 148 }
 149
 150 static void network_send_item( enum addon_type type ){
 151    if( network_client.remote ){
 152       u16 id = 0;
 153       if( type == k_addon_type_board )
 154          id = localplayer.board_view_slot;
 155       else if( type == k_addon_type_player )
 156          id = localplayer.playermodel_view_slot;
 157
 158       struct addon_cache *cache = &addon_system.cache[type];
 159       vg_pool *pool = &cache->pool;
 160
 161       netmsg_playeritem *item =
 162          alloca( sizeof(netmsg_playeritem) + ADDON_UID_MAX );
 163       item->inetmsg_id = k_inetmsg_playeritem;
 164       item->type = type;
 165       item->client = 0;
 166
 167       SDL_AtomicLock( &addon_system.sl_cache_using_resources );
 168       addon_cache_entry *entry = vg_pool_item( pool, id );
 169       addon_alias_uid( &entry->reg_ptr->alias, item->uid );
 170       SDL_AtomicUnlock( &addon_system.sl_cache_using_resources );
 171
 172       vg_info( "send equip: [%u] %s\n",
 173                item->type, item->uid );
 174
 175       u32 chs = strlen(item->uid);
 176
 177       SteamAPI_ISteamNetworkingSockets_SendMessageToConnection(
 178             hSteamNetworkingSockets, network_client.remote,
 179             item, sizeof(netmsg_playeritem)+chs+1,
 180             k_nSteamNetworkingSend_Reliable, NULL );
 181    }
 182 }
 183
 184 static void network_disconnect(void){
 185    SteamAPI_ISteamNetworkingSockets_CloseConnection(
 186          hSteamNetworkingSockets, network_client.remote, 0, NULL, 0 );
 187    network_client.remote = 0;
 188
 189    for( int i=0; i<vg_list_size(netplayers.list); i++ ){
 190       netplayers.list[i].active = 0;
 191    }
 192 }
 193
 194 static void on_server_connect_status( CallbackMsg_t *msg ){
 195    SteamNetConnectionStatusChangedCallback_t *info = (void *)msg->m_pubParam;
 196    vg_info( "  Connection status changed for %lu\n", info->m_hConn );
 197    vg_info( "  %s -> %s\n",
 198          string_ESteamNetworkingConnectionState(info->m_eOldState),
 199          string_ESteamNetworkingConnectionState(info->m_info.m_eState) );
 200
 201    if( info->m_hConn == network_client.remote ){
 202       network_client.state = info->m_info.m_eState;
 203
 204       if( info->m_info.m_eState ==
 205             k_ESteamNetworkingConnectionState_Connected ){
 206          vg_success("  Connected to remote server.. authenticating\n");
 207
 208          /* TODO: We should really wait to see if the server is in auth mode
 209           * first... */
 210          u32 size = sizeof(netmsg_auth) + network_client.app_key_length;
 211          netmsg_auth *auth = alloca(size);
 212          auth->inetmsg_id = k_inetmsg_auth;
 213          auth->ticket_length = network_client.app_key_length;
 214          for( int i=0; i<network_client.app_key_length; i++ )
 215             auth->ticket[i] = network_client.app_symmetric_key[i];
 216
 217          SteamAPI_ISteamNetworkingSockets_SendMessageToConnection(
 218                hSteamNetworkingSockets, network_client.remote, auth, size,
 219                k_nSteamNetworkingSend_Reliable, NULL );
 220
 221          network_send_username();
 222          network_send_item( k_addon_type_board );
 223          network_send_item( k_addon_type_player );
 224       }
 225       else if( info->m_info.m_eState ==
 226             k_ESteamNetworkingConnectionState_ClosedByPeer ){
 227
 228          if( info->m_info.m_eEndReason ==
 229                k_ESteamNetConnectionEnd_Remote_Max ){
 230             network_client.retries = 40;
 231          }
 232          network_disconnect();
 233       }
 234       else if( info->m_info.m_eState ==
 235             k_ESteamNetworkingConnectionState_ProblemDetectedLocally ){
 236          network_disconnect();
 237       }
 238    }
 239    else{
 240       //vg_warn( "  Recieved signal from unknown connection\n" );
 241    }
 242 }
 243
 244 static void on_persona_state_change( CallbackMsg_t *msg ){
 245    if( network_client.remote ){
 246       PersonaStateChange_t *info = (void *)msg->m_pubParam;
 247
 248       ISteamUser *hSteamUser = SteamAPI_SteamUser();
 249
 250       vg_info( "User: %llu, change: %u\n", info->m_ulSteamID,
 251                                            info->m_nChangeFlags );
 252
 253       if( info->m_ulSteamID == SteamAPI_ISteamUser_GetSteamID(hSteamUser) ){
 254          if( info->m_nChangeFlags & k_EPersonaChangeName ){
 255             network_send_username();
 256          }
 257       }
 258    }
 259 }
 260
 261 static void network_connect(void){
 262    /* Connect to server if not connected */
 263    SteamNetworkingIPAddr remoteAddr;
 264
 265 #ifdef SR_USE_LOCALHOST
 266    SteamAPI_SteamNetworkingIPAddr_SetIPv6LocalHost( &remoteAddr, 27402 );
 267 #else
 268    const char *server_lon1 = "46.101.34.155:27402";
 269    SteamAPI_SteamNetworkingIPAddr_ParseString( &remoteAddr, server_lon1 );
 270 #endif
 271    const char *server_lan = "192.168.1.32:27402";
 272    SteamAPI_SteamNetworkingIPAddr_ParseString( &remoteAddr, server_lan );
 273
 274    char buf[256];
 275    SteamAPI_SteamNetworkingIPAddr_ToString( &remoteAddr, buf, 256, 1 );
 276    vg_info( "connect to: %s\n", buf );
 277
 278    network_client.remote = SteamAPI_ISteamNetworkingSockets_ConnectByIPAddress(
 279                   hSteamNetworkingSockets, &remoteAddr, 0, NULL );
 280 }
 281
 282 static void on_inet_scoreboard( SteamNetworkingMessage_t *msg ){
 283    netmsg_scoreboard *sb = msg->m_pData;
 284
 285    u32 base_size = sizeof(netmsg_scoreboard)-
 286       sizeof(struct netmsg_board)*vg_list_size(track_infos),
 287        expected = base_size+sizeof(struct netmsg_board)*sb->board_count;
 288
 289    if( msg->m_cbSize != expected ){
 290       vg_error( "Server scoreboard was corrupted. Size: %u != %u\n",
 291             msg->m_cbSize, expected );
 292    }
 293    else{
 294       if( vg_list_size(track_infos) > sb->board_count )
 295          vg_warn( "Server is out of date, not enough boards recieved\n");
 296       else if( vg_list_size(track_infos) < sb->board_count )
 297          vg_warn( "Client out of date, server sent more boards than we have\n");
 298       else
 299          vg_success( "Recieved new scoreboards from server\n" );
 300
 301       for( int i=0; i < vg_min(sb->board_count,vg_list_size(track_infos)); i++){
 302          scoreboard_client_data.boards[i] = sb->boards[i];
 303          highscores_board_printf( stdout, sb->boards[i].data, 10 );
 304       }
 305    }
 306
 307 #if 0
 308    /* We dont need to stay on the server currently */
 309    SteamAPI_ISteamNetworkingSockets_CloseConnection(
 310          hSteamNetworkingSockets, network_client.remote, 0, NULL, 1 );
 311 #endif
 312
 313    network_scores_updated = 1;
 314 }
 315
 316 static void poll_remote_connection(void){
 317    SteamNetworkingMessage_t *messages[32];
 318    int len;
 319
 320    for( int i=0; i<10; i++ ){
 321       len = SteamAPI_ISteamNetworkingSockets_ReceiveMessagesOnConnection(
 322             hSteamNetworkingSockets, network_client.remote,
 323             messages, vg_list_size(messages));
 324
 325       if( len <= 0 )
 326          return;
 327
 328       for( int i=0; i<len; i++ ){
 329          SteamNetworkingMessage_t *msg = messages[i];
 330
 331          if( msg->m_cbSize < sizeof(netmsg_blank) ){
 332             vg_warn( "Discarding message (too small: %d)\n", msg->m_cbSize );
 333             continue;
 334          }
 335
 336          netmsg_blank *tmp = msg->m_pData;
 337
 338          if( (tmp->inetmsg_id >= 200) && (tmp->inetmsg_id < 300) ){
 339             player_remote_rx_200_300( msg );
 340          }
 341
 342          SteamAPI_SteamNetworkingMessage_t_Release( msg );
 343       }
 344    }
 345 }
 346
 347 static void network_update(void){
 348    if( !steam_ready )
 349       return;
 350
 351    ESteamNetworkingConnectionState state = network_client.state;
 352
 353    if( state == k_ESteamNetworkingConnectionState_Connected ){
 354       poll_remote_connection();
 355       f64 frame_delta = vg.time_real - network_client.last_frame;
 356
 357       if( frame_delta > 0.1 ){
 358          network_client.last_frame = vg.time_real;
 359          remote_player_send_playerframe();
 360       }
 361
 362       remote_player_debug_update();
 363    }
 364    else {
 365       if( (state == k_ESteamNetworkingConnectionState_Connecting) ||
 366           (state == k_ESteamNetworkingConnectionState_FindingRoute) ){
 367          return;
 368       }
 369       else {
 370          f64 waited = vg.time_real - network_client.last_attempt,
 371              min_wait = 1.0;
 372
 373          if( network_client.retries > 5 )
 374             min_wait = 60.0;
 375
 376          if( waited < min_wait )
 377             return;
 378
 379          network_connect();
 380          network_client.retries ++;
 381          network_client.last_attempt = vg.time_real;
 382       }
 383    }
 384 }
 385
 386 static void network_init(void){
 387    vg_console_reg_var( "network_info", &network_client.network_info,
 388                        k_var_dtype_i32, VG_VAR_PERSISTENT );
 389    if( steam_ready ){
 390       steam_register_callback( k_iSteamNetConnectionStatusChangedCallBack,
 391                                on_server_connect_status );
 392       steam_register_callback( k_iPersonaStateChange,
 393                                on_persona_state_change );
 394       request_auth_ticket();
 395    }
 396 }
 397
 398 static void network_end(void){
 399    /* TODO: Send buffered highscores that were not already */
 400    if( (network_client.state == k_ESteamNetworkingConnectionState_Connected) ||
 401        (network_client.state == k_ESteamNetworkingConnectionState_Connecting) )
 402    {
 403       SteamAPI_ISteamNetworkingSockets_CloseConnection(
 404             hSteamNetworkingSockets, network_client.remote, 0, NULL, 1 );
 405    }
 406 }