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          highscore_record *user_record = highscore_find_user_record( 0, i );
 142
 143          if( !user_record ){
 144             vg_error( "No score set but tried to upload for track %u\n", i );
 145             continue;
 146          }
 147
 148          setscore->records[count].trackid = i;
 149          setscore->records[count].playerid = 0;
 150          setscore->records[count].points = user_record->points;
 151          setscore->records[count].time = user_record->time;
 152
 153          count ++;
 154       }
 155    }
 156
 157    if( count == 0 ) return;
 158    u32 send_size = sizeof(netmsg_set_score) +
 159                   count*sizeof(struct netmsg_score_record);
 160    setscore->record_count = count;
 161
 162    SteamAPI_ISteamNetworkingSockets_SendMessageToConnection(
 163          hSteamNetworkingSockets, cremote, setscore, send_size,
 164          k_nSteamNetworkingSend_Reliable, NULL );
 165 }
 166
 167 VG_STATIC void send_nickname(void)
 168 {
 169    netmsg_set_nickname nick;
 170    nick.inetmsg_id = k_inetmsg_set_nickname;
 171
 172    memset( nick.nickname, 0, 16 );
 173    vg_strncpy( steam_username_at_startup, nick.nickname, 16,
 174                k_strncpy_allow_cutoff );
 175
 176    SteamAPI_ISteamNetworkingSockets_SendMessageToConnection(
 177          hSteamNetworkingSockets, cremote, &nick, sizeof(netmsg_set_nickname),
 178          k_nSteamNetworkingSend_Reliable, NULL );
 179
 180    network_name_update = 0;
 181 }
 182
 183 VG_STATIC void server_routine_update(void)
 184 {
 185    send_auth_ticket();
 186
 187    if( network_name_update )
 188       send_nickname();
 189
 190    send_score_update();
 191    send_score_request();
 192 }
 193
 194 VG_STATIC void on_server_connect_status( CallbackMsg_t *msg )
 195 {
 196    SteamNetConnectionStatusChangedCallback_t *info = (void *)msg->m_pubParam;
 197    vg_info( "  Connection status changed for %lu\n", info->m_hConn );
 198    vg_info( "  %s -> %s\n",
 199          string_ESteamNetworkingConnectionState(info->m_eOldState),
 200          string_ESteamNetworkingConnectionState(info->m_info.m_eState) );
 201
 202    if( info->m_hConn == cremote )
 203    {
 204       cremote_state = info->m_info.m_eState;
 205       if( info->m_info.m_eState ==
 206             k_ESteamNetworkingConnectionState_Connected )
 207       {
 208          vg_success("  Connected to remote server.. running updates\n");
 209          server_routine_update();
 210       }
 211    }
 212    else
 213    {
 214       vg_warn( "  Recieved signal from unknown connection\n" );
 215    }
 216 }
 217
 218 VG_STATIC void network_connect_gc(void)
 219 {
 220    /* Connect to server if not connected */
 221    SteamNetworkingIPAddr remoteAddr;
 222
 223 #ifdef SR_USE_LOCALHOST
 224    SteamAPI_SteamNetworkingIPAddr_SetIPv6LocalHost( &remoteAddr, 27402 );
 225 #else
 226    const char *server_lon1 = "46.101.34.155:27402";
 227    SteamAPI_SteamNetworkingIPAddr_ParseString( &remoteAddr, server_lon1 );
 228 #endif
 229
 230    char buf[256];
 231    SteamAPI_SteamNetworkingIPAddr_ToString( &remoteAddr, buf, 256, 1 );
 232    vg_info( "connect to: %s\n", buf );
 233
 234    cremote = SteamAPI_ISteamNetworkingSockets_ConnectByIPAddress(
 235                   hSteamNetworkingSockets, &remoteAddr, 0, NULL );
 236 }
 237
 238 VG_STATIC void on_inet_scoreboard( SteamNetworkingMessage_t *msg )
 239 {
 240    netmsg_scoreboard *sb = msg->m_pData;
 241
 242    u32 base_size = sizeof(netmsg_scoreboard)-
 243       sizeof(struct netmsg_board)*vg_list_size(track_infos),
 244        expected = base_size+sizeof(struct netmsg_board)*sb->board_count;
 245
 246    if( msg->m_cbSize != expected )
 247    {
 248       vg_error( "Server scoreboard was corrupted. Size: %u != %u\n",
 249             msg->m_cbSize, expected );
 250    }
 251    else
 252    {
 253       if( vg_list_size(track_infos) > sb->board_count )
 254          vg_warn( "Server is out of date, not enough boards recieved\n");
 255       else if( vg_list_size(track_infos) < sb->board_count )
 256          vg_warn( "Client out of date, server sent more boards than we have\n");
 257       else
 258          vg_success( "Recieved new scoreboards from server\n" );
 259
 260       for( int i=0; i < vg_min(sb->board_count,vg_list_size(track_infos)); i++)
 261       {
 262          scoreboard_client_data.boards[i] = sb->boards[i];
 263          highscores_board_printf( stdout, sb->boards[i].data, 10 );
 264       }
 265    }
 266
 267    /* We dont need to stay on the server currently */
 268    SteamAPI_ISteamNetworkingSockets_CloseConnection(
 269          hSteamNetworkingSockets, cremote, 0, NULL, 1 );
 270
 271    network_scores_updated = 1;
 272 }
 273
 274 VG_STATIC void poll_connection(void)
 275 {
 276    SteamNetworkingMessage_t *messages[32];
 277    int len;
 278
 279    while(1)
 280    {
 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       {
 289          SteamNetworkingMessage_t *msg = messages[i];
 290
 291          if( msg->m_cbSize < sizeof(netmsg_blank) )
 292          {
 293             vg_warn( "Discarding message (too small: %d)\n", msg->m_cbSize );
 294             continue;
 295          }
 296
 297          netmsg_blank *tmp = msg->m_pData;
 298
 299          if( tmp->inetmsg_id == k_inetmsg_scoreboard )
 300             on_inet_scoreboard( msg );
 301
 302          SteamAPI_SteamNetworkingMessage_t_Release( msg );
 303       }
 304    }
 305 }
 306
 307 /*
 308  * Subroutine to be connected to main game loop, runs all routines on timers
 309  */
 310 VG_STATIC void network_update(void)
 311 {
 312    if( steam_ready )
 313    {
 314       static double last_update = 0.0;
 315       poll_connection();
 316
 317       if( vg.time > (last_update + 60.0) )
 318       {
 319          last_update = vg.time;
 320
 321          if( steam_app_ticket_length )
 322          {
 323             network_connect_gc();
 324          }
 325          else
 326          {
 327             vg_low( "Not making remote connection; app ticket not gotten\n" );
 328          }
 329       }
 330
 331       if( vg.time > (last_update + 10.0) &&
 332             (cremote_state == k_ESteamNetworkingConnectionState_Connected ))
 333       {
 334          vg_warn( "Connected to server but no return... disconnecting\n" );
 335          SteamAPI_ISteamNetworkingSockets_CloseConnection(
 336                hSteamNetworkingSockets, cremote, 0, NULL, 1 );
 337       }
 338    }
 339 }
 340
 341 VG_STATIC void network_init(void)
 342 {
 343    if( steam_ready )
 344    {
 345       steam_register_callback( k_iSteamNetConnectionStatusChangedCallBack,
 346                                on_server_connect_status );
 347       request_auth_ticket();
 348    }
 349 }
 350
 351 VG_STATIC void network_end(void)
 352 {
 353    /* TODO: Fire off any buffered highscores that need to be setn */
 354    if( cremote_state == k_ESteamNetworkingConnectionState_Connected ||
 355        cremote_state == k_ESteamNetworkingConnectionState_Connecting )
 356    {
 357       SteamAPI_ISteamNetworkingSockets_CloseConnection(
 358             hSteamNetworkingSockets, cremote, 0, NULL, 1 );
 359    }
 360 }
 361
 362 #else /* SR_NETWORKED */
 363
 364 VG_STATIC void network_init(void){}
 365 VG_STATIC void network_update(void){}
 366 VG_STATIC void network_end(void){}
 367
 368 #endif /* SR_NETWORKED */
 369 #endif /* NETWORK_H */