src/vg/vg_steam_auth.h

   1 #ifndef VG_STEAM_AUTH_H
   2 #define VG_STEAM_AUTH_H
   3
   4 #include "vg/vg_platform.h"
   5
   6 typedef u32 HAuthTicket;
   7 enum{ k_HAuthTicketInvalid = 0 };
   8
   9 #include "vg_steam.h"
  10 #if defined( VALVE_CALLBACK_PACK_SMALL )
  11  #pragma pack( push, 4 )
  12 #elif defined( VALVE_CALLBACK_PACK_LARGE )
  13  #pragma pack( push, 8 )
  14 #endif
  15
  16 typedef struct EncryptedAppTicketResponse_t EncryptedAppTicketResponse_t;
  17 struct EncryptedAppTicketResponse_t
  18 {
  19         EResult m_eResult;
  20 };
  21 enum{ k_iEncryptedAppTicketResponse = k_iSteamUserCallbacks + 54 };
  22
  23 typedef struct GetAuthSessionTicketResponse_t GetAuthSessionTicketResponse_t;
  24 struct GetAuthSessionTicketResponse_t
  25 {
  26         HAuthTicket m_hAuthTicket;
  27         EResult m_eResult;
  28 };
  29 enum{ k_iGetAuthSessionTicketResponse = k_iSteamUserCallbacks + 63 };
  30
  31 #pragma pack(pop)
  32
  33 /*
  34  * Regular authentication
  35  */
  36
  37 typedef void ISteamUser;
  38 ISteamUser *SteamAPI_SteamUser_v021(void);
  39 ISteamUser *SteamAPI_SteamUser(void)
  40 {
  41    return SteamAPI_SteamUser_v021();
  42 }
  43
  44 HAuthTicket SteamAPI_ISteamUser_GetAuthSessionTicket(
  45                   ISteamUser *self, void *pTicket,
  46                   int cbMaxTicket, u32 *pcbTicket );
  47
  48 /*
  49  * Application symetric-key ticket (Client)
  50  */
  51
  52 SteamAPICall_t SteamAPI_ISteamUser_RequestEncryptedAppTicket(
  53       ISteamUser *self, void *pDataToInclude, int cbDataToInclude );
  54
  55 int SteamAPI_ISteamUser_GetEncryptedAppTicket(
  56       ISteamUser *self, void *pTicket,
  57       int cbMaxTicket, u32 *pcbTicket );
  58
  59
  60 /*
  61  * Application symetric-key ticket method (Server)
  62  */
  63
  64 enum { k_nSteamEncryptedAppTicketSymmetricKeyLen = 32 };
  65
  66 int SteamEncryptedAppTicket_BDecryptTicket( u8 *rgubTicketEncrypted,
  67          u32 cubTicketEncrypted, u8 *rgubTicketDecrypted,
  68          u32 *pcubTicketDecrypted,
  69          u8 rgubKey[k_nSteamEncryptedAppTicketSymmetricKeyLen],
  70          int cubKey );
  71
  72 int SteamEncryptedAppTicket_BIsTicketForApp( u8 *rgubTicketDecrypted,
  73       u32 cubTicketDecrypted, AppId_t nAppID );
  74
  75 RTime32 SteamEncryptedAppTicket_GetTicketIssueTime( u8 *rgubTicketDecrypted,
  76       u32 cubTicketDecrypted );
  77
  78 void SteamEncryptedAppTicket_GetTicketSteamID(
  79       u8 *rgubTicketDecrypted, u32 cubTicketDecrypted, CSteamID *psteamID );
  80
  81 AppId_t SteamEncryptedAppTicket_GetTicketAppID( u8 *rgubTicketDecrypted,
  82       u32 cubTicketDecrypted );
  83
  84 int SteamEncryptedAppTicket_BUserOwnsAppInTicket( u8 *rgubTicketDecrypted,
  85       u32 cubTicketDecrypted, AppId_t nAppID );
  86
  87 int SteamEncryptedAppTicket_BUserIsVacBanned( u8 *rgubTicketDecrypted,
  88       u32 cubTicketDecrypted );
  89
  90 int SteamEncryptedAppTicket_BGetAppDefinedValue( u8 *rgubTicketDecrypted,
  91       u32 cubTicketDecrypted, u32 *pValue );
  92
  93 u8 *SteamEncryptedAppTicket_GetUserVariableData( u8 *rgubTicketDecrypted,
  94       u32 cubTicketDecrypted, u32 *pcubUserData );
  95
  96 int SteamEncryptedAppTicket_BIsTicketSigned( u8 *rgubTicketDecrypted,
  97       u32 cubTicketDecrypted, u8 *pubRSAKey, u32 cubRSAKey );
  98
  99 int SteamEncryptedAppTicket_BIsLicenseBorrowed( u8 *rgubTicketDecrypted,
 100       u32 cubTicketDecrypted );
 101
 102 int SteamEncryptedAppTicket_BIsLicenseTemporary( u8 *rgubTicketDecrypted,
 103       u32 cubTicketDecrypted );
 104
 105 static u8 vg_char_base16( char c )
 106 {
 107    if( c >= '0' && c <= '9' )
 108       return c-'0';
 109    if( c >= 'a' && c <= 'f' )
 110       return (c-'a') + 10;
 111
 112    return 0;
 113 }
 114
 115 static int vg_load_steam_symetric_key( const char *path, u8 *buf )
 116 {
 117    i64 len;
 118    char *text_src = vg_textasset_read_s( path, &len );
 119
 120    if( text_src )
 121    {
 122       if( len < k_nSteamEncryptedAppTicketSymmetricKeyLen )
 123       {
 124          vg_error( "Application key was invalid size\n" );
 125          vg_free( text_src );
 126          return 0;
 127       }
 128
 129       for( int i=0; i<k_nSteamEncryptedAppTicketSymmetricKeyLen; i++ )
 130       {
 131          buf[i] = (vg_char_base16( text_src[i*2+0] ) << 4) |
 132                    vg_char_base16( text_src[i*2+1] );
 133       }
 134
 135       vg_free( text_src );
 136       return 1;
 137    }
 138    else
 139    {
 140       vg_error( "Application key path was invalid\n" );
 141       return 0;
 142    }
 143 }
 144
 145
 146 #endif /* VG_STEAM_AUTH_H */