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_disconnect(void){
 151    SteamAPI_ISteamNetworkingSockets_CloseConnection(
 152          hSteamNetworkingSockets, network_client.remote, 0, NULL, 0 );
 153    network_client.remote = 0;
 154
 155    for( int i=0; i<vg_list_size(netplayers.list); i++ ){
 156       netplayers.list[i].active = 0;
 157    }
 158 }
 159
 160 static void on_server_connect_status( CallbackMsg_t *msg ){
 161    SteamNetConnectionStatusChangedCallback_t *info = (void *)msg->m_pubParam;
 162    vg_info( "  Connection status changed for %lu\n", info->m_hConn );
 163    vg_info( "  %s -> %s\n",
 164          string_ESteamNetworkingConnectionState(info->m_eOldState),
 165          string_ESteamNetworkingConnectionState(info->m_info.m_eState) );
 166
 167    if( info->m_hConn == network_client.remote ){
 168       network_client.state = info->m_info.m_eState;
 169
 170       if( info->m_info.m_eState ==
 171             k_ESteamNetworkingConnectionState_Connected ){
 172          vg_success("  Connected to remote server.. authenticating\n");
 173
 174          /* TODO: We should really wait to see if the server is in auth mode
 175           * first... */
 176          u32 size = sizeof(netmsg_auth) + network_client.app_key_length;
 177          netmsg_auth *auth = alloca(size);
 178          auth->inetmsg_id = k_inetmsg_auth;
 179          auth->ticket_length = network_client.app_key_length;
 180          for( int i=0; i<network_client.app_key_length; i++ )
 181             auth->ticket[i] = network_client.app_symmetric_key[i];
 182
 183          SteamAPI_ISteamNetworkingSockets_SendMessageToConnection(
 184                hSteamNetworkingSockets, network_client.remote, auth, size,
 185                k_nSteamNetworkingSend_Reliable, NULL );
 186
 187          network_send_username();
 188       }
 189       else if( info->m_info.m_eState ==
 190             k_ESteamNetworkingConnectionState_ClosedByPeer ){
 191
 192          if( info->m_info.m_eEndReason ==
 193                k_ESteamNetConnectionEnd_Remote_Max ){
 194             network_client.retries = 40;
 195          }
 196          network_disconnect();
 197       }
 198       else if( info->m_info.m_eState ==
 199             k_ESteamNetworkingConnectionState_ProblemDetectedLocally ){
 200          network_disconnect();
 201       }
 202    }
 203    else{
 204       //vg_warn( "  Recieved signal from unknown connection\n" );
 205    }
 206 }
 207
 208 static void on_persona_state_change( CallbackMsg_t *msg ){
 209    if( network_client.remote ){
 210       PersonaStateChange_t *info = (void *)msg->m_pubParam;
 211
 212       ISteamUser *hSteamUser = SteamAPI_SteamUser();
 213
 214       vg_info( "User: %llu, change: %u\n", info->m_ulSteamID,
 215                                            info->m_nChangeFlags );
 216
 217       if( info->m_ulSteamID == SteamAPI_ISteamUser_GetSteamID(hSteamUser) ){
 218          if( info->m_nChangeFlags & k_EPersonaChangeName ){
 219             network_send_username();
 220          }
 221       }
 222    }
 223 }
 224
 225 static void network_connect(void){
 226    /* Connect to server if not connected */
 227    SteamNetworkingIPAddr remoteAddr;
 228
 229 #ifdef SR_USE_LOCALHOST
 230    SteamAPI_SteamNetworkingIPAddr_SetIPv6LocalHost( &remoteAddr, 27402 );
 231 #else
 232    const char *server_lon1 = "46.101.34.155:27402";
 233    SteamAPI_SteamNetworkingIPAddr_ParseString( &remoteAddr, server_lon1 );
 234 #endif
 235    const char *server_lan = "192.168.1.32:27402";
 236    SteamAPI_SteamNetworkingIPAddr_ParseString( &remoteAddr, server_lan );
 237
 238    char buf[256];
 239    SteamAPI_SteamNetworkingIPAddr_ToString( &remoteAddr, buf, 256, 1 );
 240    vg_info( "connect to: %s\n", buf );
 241
 242    network_client.remote = SteamAPI_ISteamNetworkingSockets_ConnectByIPAddress(
 243                   hSteamNetworkingSockets, &remoteAddr, 0, NULL );
 244 }
 245
 246 static void on_inet_scoreboard( SteamNetworkingMessage_t *msg ){
 247    netmsg_scoreboard *sb = msg->m_pData;
 248
 249    u32 base_size = sizeof(netmsg_scoreboard)-
 250       sizeof(struct netmsg_board)*vg_list_size(track_infos),
 251        expected = base_size+sizeof(struct netmsg_board)*sb->board_count;
 252
 253    if( msg->m_cbSize != expected ){
 254       vg_error( "Server scoreboard was corrupted. Size: %u != %u\n",
 255             msg->m_cbSize, expected );
 256    }
 257    else{
 258       if( vg_list_size(track_infos) > sb->board_count )
 259          vg_warn( "Server is out of date, not enough boards recieved\n");
 260       else if( vg_list_size(track_infos) < sb->board_count )
 261          vg_warn( "Client out of date, server sent more boards than we have\n");
 262       else
 263          vg_success( "Recieved new scoreboards from server\n" );
 264
 265       for( int i=0; i < vg_min(sb->board_count,vg_list_size(track_infos)); i++){
 266          scoreboard_client_data.boards[i] = sb->boards[i];
 267          highscores_board_printf( stdout, sb->boards[i].data, 10 );
 268       }
 269    }
 270
 271 #if 0
 272    /* We dont need to stay on the server currently */
 273    SteamAPI_ISteamNetworkingSockets_CloseConnection(
 274          hSteamNetworkingSockets, network_client.remote, 0, NULL, 1 );
 275 #endif
 276
 277    network_scores_updated = 1;
 278 }
 279
 280 static void poll_remote_connection(void){
 281    SteamNetworkingMessage_t *messages[32];
 282    int len;
 283
 284    for( int i=0; i<10; i++ ){
 285       len = SteamAPI_ISteamNetworkingSockets_ReceiveMessagesOnConnection(
 286             hSteamNetworkingSockets, network_client.remote,
 287             messages, vg_list_size(messages));
 288
 289       if( len <= 0 )
 290          return;
 291
 292       for( int i=0; i<len; i++ ){
 293          SteamNetworkingMessage_t *msg = messages[i];
 294
 295          if( msg->m_cbSize < sizeof(netmsg_blank) ){
 296             vg_warn( "Discarding message (too small: %d)\n", msg->m_cbSize );
 297             continue;
 298          }
 299
 300          netmsg_blank *tmp = msg->m_pData;
 301
 302          if( (tmp->inetmsg_id >= 200) && (tmp->inetmsg_id < 300) ){
 303             player_remote_rx_200_300( msg );
 304          }
 305
 306          SteamAPI_SteamNetworkingMessage_t_Release( msg );
 307       }
 308    }
 309 }
 310
 311 static void network_update(void){
 312    if( !steam_ready )
 313       return;
 314
 315    ESteamNetworkingConnectionState state = network_client.state;
 316
 317    if( state == k_ESteamNetworkingConnectionState_Connected ){
 318       poll_remote_connection();
 319       f64 frame_delta = vg.time_real - network_client.last_frame;
 320
 321       if( frame_delta > 0.1 ){
 322          network_client.last_frame = vg.time_real;
 323          remote_player_send_playerframe();
 324       }
 325
 326       remote_player_debug_update();
 327    }
 328    else {
 329       if( (state == k_ESteamNetworkingConnectionState_Connecting) ||
 330           (state == k_ESteamNetworkingConnectionState_FindingRoute) ){
 331          return;
 332       }
 333       else {
 334          f64 waited = vg.time_real - network_client.last_attempt,
 335              min_wait = 1.0;
 336
 337          if( network_client.retries > 5 )
 338             min_wait = 60.0;
 339
 340          if( waited < min_wait )
 341             return;
 342
 343          network_connect();
 344          network_client.retries ++;
 345          network_client.last_attempt = vg.time_real;
 346       }
 347    }
 348 }
 349
 350 static void network_init(void){
 351    vg_console_reg_var( "network_info", &network_client.network_info,
 352                        k_var_dtype_i32, VG_VAR_PERSISTENT );
 353    if( steam_ready ){
 354       steam_register_callback( k_iSteamNetConnectionStatusChangedCallBack,
 355                                on_server_connect_status );
 356       steam_register_callback( k_iPersonaStateChange,
 357                                on_persona_state_change );
 358       request_auth_ticket();
 359    }
 360 }
 361
 362 static void network_end(void){
 363    /* TODO: Send buffered highscores that were not already */
 364    if( (network_client.state == k_ESteamNetworkingConnectionState_Connected) ||
 365        (network_client.state == k_ESteamNetworkingConnectionState_Connecting) )
 366    {
 367       SteamAPI_ISteamNetworkingSockets_CloseConnection(
 368             hSteamNetworkingSockets, network_client.remote, 0, NULL, 1 );
 369    }
 370 }