vg_steam_auth.h

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