src/vg/vg_steam_auth.h

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