network.h

   1 /*
   2  * Copyright (C) 2021-2022 Mt.ZERO Software, Harry Godden - All Rights Reserved
   3  * All trademarks are property of their respective owners
   4  */
   5
   6 #ifndef NETWORK_H
   7 #define NETWORK_H
   8
   9 #include "vg/vg_stdint.h"
  10 #include "steam.h"
  11 #include "network_msg.h"
  12 #include "highscores.h"
  13
  14 VG_STATIC int network_scores_updated = 0;
  15
  16 /*
  17  * Interface
  18  */
  19 //#define SR_USE_LOCALHOST
  20
  21 /* Call it at start; Connects us to the gameserver */
  22 VG_STATIC void network_init(void);
  23
  24 /* Run this from main loop */
  25 VG_STATIC void network_update(void);
  26
  27 /* Call it at shutdown */
  28 VG_STATIC void network_end(void);
  29
  30 /*
  31  * Can buffer up a bunch of these by calling many times, they will be
  32  * sent at the next connection
  33  */
  34 VG_STATIC void network_submit_highscore( u32 trackid, u16 points, u16 time );
  35
  36 /*
  37  * Game endpoints are provided with the same names to allow running without a
  38  * network connection.
  39  */
  40 #ifdef SR_NETWORKED
  41
  42 /*
  43  * Runtime connection stuff
  44  */
  45 VG_STATIC u8 steam_app_ticket[ 1024 ];
  46 VG_STATIC u32 steam_app_ticket_length;
  47 VG_STATIC int network_name_update = 1;
  48
  49 VG_STATIC HSteamNetConnection cremote;
  50 VG_STATIC ESteamNetworkingConnectionState cremote_state =
  51      k_ESteamNetworkingConnectionState_None;
  52
  53 /*
  54  * Implementation
  55  */
  56
  57 VG_STATIC void scores_update(void);
  58
  59 VG_STATIC void on_auth_ticket_recieved( void *result, void *context )
  60 {
  61    EncryptedAppTicketResponse_t *response = result;
  62
  63    if( response->m_eResult == k_EResultOK )
  64    {
  65       vg_info( "  New app ticket ready\n" );
  66    }
  67    else
  68    {
  69       vg_warn( "  Could not request new encrypted app ticket (%u)\n",
  70                   response->m_eResult );
  71    }
  72
  73    if( SteamAPI_ISteamUser_GetEncryptedAppTicket( hSteamUser,
  74             steam_app_ticket,
  75             vg_list_size(steam_app_ticket),
  76             &steam_app_ticket_length ))
  77    {
  78       vg_success( "  Loaded app ticket (%u bytes)\n", steam_app_ticket_length );
  79    }
  80    else
  81    {
  82       vg_error( "  No ticket availible\n" );
  83       steam_app_ticket_length = 0;
  84    }
  85 }
  86
  87 VG_STATIC void request_auth_ticket(void)
  88 {
  89    /*
  90     * TODO Check for one thats cached on the disk and load it.
  91     * This might be OK though because steam seems to cache the result
  92     */
  93
  94    vg_info( "Requesting new authorization ticket\n" );
  95
  96    vg_steam_async_call *call = vg_alloc_async_steam_api_call();
  97    call->userdata = NULL;
  98    call->p_handler = on_auth_ticket_recieved;
  99    call->id =
 100       SteamAPI_ISteamUser_RequestEncryptedAppTicket( hSteamUser, NULL, 0 );
 101 }
 102
 103 VG_STATIC void send_auth_ticket(void)
 104 {
 105    u32 size = sizeof(netmsg_auth) + steam_app_ticket_length;
 106    netmsg_auth *auth = alloca(size);
 107
 108    auth->inetmsg_id = k_inetmsg_auth;
 109    auth->ticket_length = steam_app_ticket_length;
 110    for( int i=0; i<steam_app_ticket_length; i++ )
 111       auth->ticket[i] = steam_app_ticket[i];
 112
 113    SteamAPI_ISteamNetworkingSockets_SendMessageToConnection(
 114          hSteamNetworkingSockets, cremote, auth, size,
 115          k_nSteamNetworkingSend_Reliable, NULL );
 116 }
 117
 118 VG_STATIC void send_score_request(void)
 119 {
 120    vg_info( "Requesting scores\n" );
 121    netmsg_scores_request req;
 122    req.inetmsg_id = k_inetmsg_scores_request;
 123
 124    SteamAPI_ISteamNetworkingSockets_SendMessageToConnection(
 125          hSteamNetworkingSockets, cremote, &req, sizeof(netmsg_scores_request),
 126          k_nSteamNetworkingSend_Reliable, NULL );
 127 }
 128
 129 VG_STATIC void send_score_update(void)
 130 {
 131    vg_info( "Sending scores\n" );
 132    u32 size = sizeof(netmsg_set_score) +
 133                   vg_list_size(track_infos)*sizeof(struct netmsg_score_record);
 134    netmsg_set_score *setscore = alloca( size );
 135    setscore->inetmsg_id = k_inetmsg_set_score;
 136
 137    int count = 0;
 138    for( u32 i=0; i<vg_list_size(track_infos); i++ ){
 139       if( track_infos[i].push ){
 140          track_infos[i].push = 0;
 141
 142 #if 0
 143          highscore_record *user_record = highscore_find_user_record( 0, i );
 144
 145          if( !user_record ){
 146             vg_error( "No score set but tried to upload for track %u\n", i );
 147             continue;
 148          }
 149 #endif
 150          highscore_record *user_record = &track_infos[i].record;
 151
 152          setscore->records[count].trackid = i;
 153          setscore->records[count].playerid = 0;
 154          setscore->records[count].points = user_record->points;
 155          setscore->records[count].time = user_record->time;
 156
 157          count ++;
 158       }
 159    }
 160
 161    if( count == 0 ) return;
 162    u32 send_size = sizeof(netmsg_set_score) +
 163                   count*sizeof(struct netmsg_score_record);
 164    setscore->record_count = count;
 165
 166    SteamAPI_ISteamNetworkingSockets_SendMessageToConnection(
 167          hSteamNetworkingSockets, cremote, setscore, send_size,
 168          k_nSteamNetworkingSend_Reliable, NULL );
 169 }
 170
 171 VG_STATIC void send_nickname(void)
 172 {
 173    netmsg_set_nickname nick;
 174    nick.inetmsg_id = k_inetmsg_set_nickname;
 175
 176    memset( nick.nickname, 0, 16 );
 177    vg_strncpy( steam_username_at_startup, nick.nickname, 16,
 178                k_strncpy_allow_cutoff );
 179
 180    SteamAPI_ISteamNetworkingSockets_SendMessageToConnection(
 181          hSteamNetworkingSockets, cremote, &nick, sizeof(netmsg_set_nickname),
 182          k_nSteamNetworkingSend_Reliable, NULL );
 183
 184    network_name_update = 0;
 185 }
 186
 187 VG_STATIC void server_routine_update(void)
 188 {
 189    send_auth_ticket();
 190
 191    if( network_name_update )
 192       send_nickname();
 193
 194    send_score_update();
 195    send_score_request();
 196 }
 197
 198 VG_STATIC void on_server_connect_status( CallbackMsg_t *msg )
 199 {
 200    SteamNetConnectionStatusChangedCallback_t *info = (void *)msg->m_pubParam;
 201    vg_info( "  Connection status changed for %lu\n", info->m_hConn );
 202    vg_info( "  %s -> %s\n",
 203          string_ESteamNetworkingConnectionState(info->m_eOldState),
 204          string_ESteamNetworkingConnectionState(info->m_info.m_eState) );
 205
 206    if( info->m_hConn == cremote )
 207    {
 208       cremote_state = info->m_info.m_eState;
 209       if( info->m_info.m_eState ==
 210             k_ESteamNetworkingConnectionState_Connected )
 211       {
 212          vg_success("  Connected to remote server.. running updates\n");
 213          server_routine_update();
 214       }
 215    }
 216    else
 217    {
 218       vg_warn( "  Recieved signal from unknown connection\n" );
 219    }
 220 }
 221
 222 VG_STATIC void network_connect_gc(void)
 223 {
 224    /* Connect to server if not connected */
 225    SteamNetworkingIPAddr remoteAddr;
 226
 227 #ifdef SR_USE_LOCALHOST
 228    SteamAPI_SteamNetworkingIPAddr_SetIPv6LocalHost( &remoteAddr, 27402 );
 229 #else
 230    const char *server_lon1 = "46.101.34.155:27402";
 231    SteamAPI_SteamNetworkingIPAddr_ParseString( &remoteAddr, server_lon1 );
 232 #endif
 233
 234    char buf[256];
 235    SteamAPI_SteamNetworkingIPAddr_ToString( &remoteAddr, buf, 256, 1 );
 236    vg_info( "connect to: %s\n", buf );
 237
 238    cremote = SteamAPI_ISteamNetworkingSockets_ConnectByIPAddress(
 239                   hSteamNetworkingSockets, &remoteAddr, 0, NULL );
 240 }
 241
 242 VG_STATIC void on_inet_scoreboard( SteamNetworkingMessage_t *msg )
 243 {
 244    netmsg_scoreboard *sb = msg->m_pData;
 245
 246    u32 base_size = sizeof(netmsg_scoreboard)-
 247       sizeof(struct netmsg_board)*vg_list_size(track_infos),
 248        expected = base_size+sizeof(struct netmsg_board)*sb->board_count;
 249
 250    if( msg->m_cbSize != expected ){
 251       vg_error( "Server scoreboard was corrupted. Size: %u != %u\n",
 252             msg->m_cbSize, expected );
 253    }
 254    else{
 255       if( vg_list_size(track_infos) > sb->board_count )
 256          vg_warn( "Server is out of date, not enough boards recieved\n");
 257       else if( vg_list_size(track_infos) < sb->board_count )
 258          vg_warn( "Client out of date, server sent more boards than we have\n");
 259       else
 260          vg_success( "Recieved new scoreboards from server\n" );
 261
 262       for( int i=0; i < vg_min(sb->board_count,vg_list_size(track_infos)); i++){
 263          scoreboard_client_data.boards[i] = sb->boards[i];
 264          highscores_board_printf( stdout, sb->boards[i].data, 10 );
 265       }
 266    }
 267
 268    /* We dont need to stay on the server currently */
 269    SteamAPI_ISteamNetworkingSockets_CloseConnection(
 270          hSteamNetworkingSockets, cremote, 0, NULL, 1 );
 271
 272    network_scores_updated = 1;
 273 }
 274
 275 VG_STATIC void poll_connection(void)
 276 {
 277    SteamNetworkingMessage_t *messages[32];
 278    int len;
 279
 280    while(1){
 281       len = SteamAPI_ISteamNetworkingSockets_ReceiveMessagesOnConnection(
 282             hSteamNetworkingSockets, cremote, messages, vg_list_size(messages));
 283
 284       if( len <= 0 )
 285          return;
 286
 287       for( int i=0; i<len; i++ ){
 288          SteamNetworkingMessage_t *msg = messages[i];
 289
 290          if( msg->m_cbSize < sizeof(netmsg_blank) ){
 291             vg_warn( "Discarding message (too small: %d)\n", msg->m_cbSize );
 292             continue;
 293          }
 294
 295          netmsg_blank *tmp = msg->m_pData;
 296
 297          if( tmp->inetmsg_id == k_inetmsg_scoreboard )
 298             on_inet_scoreboard( msg );
 299
 300          SteamAPI_SteamNetworkingMessage_t_Release( msg );
 301       }
 302    }
 303 }
 304
 305 /*
 306  * Subroutine to be connected to main game loop, runs all routines on timers
 307  */
 308 VG_STATIC void network_update(void)
 309 {
 310    if( steam_ready ){
 311       static double last_update = 0.0;
 312       poll_connection();
 313
 314       if( vg.time > (last_update + 60.0) ){
 315          last_update = vg.time;
 316
 317          if( steam_app_ticket_length ){
 318             network_connect_gc();
 319          }
 320          else{
 321             vg_low( "Not making remote connection; app ticket not gotten\n" );
 322          }
 323       }
 324
 325       if( vg.time > (last_update + 10.0) &&
 326             (cremote_state == k_ESteamNetworkingConnectionState_Connected ))
 327       {
 328          vg_warn( "Connected to server but no return... disconnecting\n" );
 329          SteamAPI_ISteamNetworkingSockets_CloseConnection(
 330                hSteamNetworkingSockets, cremote, 0, NULL, 1 );
 331       }
 332    }
 333 }
 334
 335 VG_STATIC void network_init(void)
 336 {
 337    if( steam_ready ){
 338       steam_register_callback( k_iSteamNetConnectionStatusChangedCallBack,
 339                                on_server_connect_status );
 340       request_auth_ticket();
 341    }
 342 }
 343
 344 VG_STATIC void network_end(void)
 345 {
 346    /* TODO: Fire off any buffered highscores that need to be setn */
 347    if( cremote_state == k_ESteamNetworkingConnectionState_Connected ||
 348        cremote_state == k_ESteamNetworkingConnectionState_Connecting )
 349    {
 350       SteamAPI_ISteamNetworkingSockets_CloseConnection(
 351             hSteamNetworkingSockets, cremote, 0, NULL, 1 );
 352    }
 353 }
 354
 355 #else /* SR_NETWORKED */
 356
 357 VG_STATIC void network_init(void){}
 358 VG_STATIC void network_update(void){}
 359 VG_STATIC void network_end(void){}
 360
 361 #endif /* SR_NETWORKED */
 362 #endif /* NETWORK_H */