network.c

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