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Better appticket format. Thanks Nemirtingas.

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Mr_Goldberg 2022-08-11 20:50:51 -04:00
parent c22b3cd3d3
commit 0c16f1942a
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GPG key ID: 8597D87419DEF278
3 changed files with 355 additions and 10 deletions
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55
dll/steam_user.h
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@ -17,6 +17,8 @@
#include "base.h"
#include "appticket.h"
class Steam_User :
public ISteamUser009,
public ISteamUser010,
@ -367,7 +369,44 @@ SteamAPICall_t RequestEncryptedAppTicket( void *pDataToInclude, int cbDataToIncl
EncryptedAppTicketResponse_t data;
data.m_eResult = k_EResultOK;
encrypted_app_ticket = std::string((char *)pDataToInclude, cbDataToInclude);
DecryptedAppTicket ticket;
ticket.TicketV1.Reset();
ticket.TicketV2.Reset();
ticket.TicketV4.Reset();
ticket.TicketV1.TicketVersion = 1;
if (pDataToInclude) {
ticket.TicketV1.UserData.assign((uint8_t*)pDataToInclude, (uint8_t*)pDataToInclude + cbDataToInclude);
}
ticket.TicketV2.TicketVersion = 4;
ticket.TicketV2.SteamID = settings->get_local_steam_id().ConvertToUint64();
ticket.TicketV2.TicketIssueTime = std::chrono::duration_cast<std::chrono::seconds>(std::chrono::system_clock::now().time_since_epoch()).count();
ticket.TicketV2.TicketValidityEnd = ticket.TicketV2.TicketIssueTime + (21 * 24 * 60 * 60);
for (int i = 0; i < 140; ++i)
{
AppId_t appid;
bool available;
std::string name;
if (!settings->getDLC(appid, appid, available, name)) break;
ticket.TicketV4.AppIDs.emplace_back(appid);
}
ticket.TicketV4.HasVACStatus = true;
ticket.TicketV4.VACStatus = 0;
auto serialized = ticket.SerializeTicket();
SteamAppTicket_pb pb;
pb.set_ticket_version_no(1);
pb.set_crc_encryptedticket(0); // TODO: Find out how to compute the CRC
pb.set_cb_encrypteduserdata(cbDataToInclude);
pb.set_cb_encrypted_appownershipticket(serialized.size() - 16);
pb.mutable_encrypted_ticket()->assign(serialized.begin(), serialized.end()); // TODO: Find how to encrypt datas
encrypted_app_ticket = pb.SerializeAsString();
return callback_results->addCallResult(data.k_iCallback, &data, sizeof(data));
}
@ -375,21 +414,17 @@ SteamAPICall_t RequestEncryptedAppTicket( void *pDataToInclude, int cbDataToIncl
bool GetEncryptedAppTicket( void *pTicket, int cbMaxTicket, uint32 *pcbTicket )
{
PRINT_DEBUG("Steam_User::GetEncryptedAppTicket %i\n", cbMaxTicket);
if (!pcbTicket) return false;
unsigned int ticket_size = encrypted_app_ticket.size() + 126;
unsigned int ticket_size = encrypted_app_ticket.size();
if (!cbMaxTicket) {
if (!pcbTicket) return false;
*pcbTicket = ticket_size;
return true;
}
if (!pTicket) return false;
//TODO figure out exact sizes?
if (ticket_size < cbMaxTicket) cbMaxTicket = ticket_size;
char ticket_base[] = {0x08, 0x01};
memset(pTicket, 'g', cbMaxTicket);
memcpy(pTicket, ticket_base, sizeof(ticket_base));
*pcbTicket = cbMaxTicket;
if (ticket_size > cbMaxTicket) return false;
encrypted_app_ticket.copy((char *)pTicket, cbMaxTicket);
if (pcbTicket) *pcbTicket = ticket_size;
return true;
}