gbe_fork/dll/auth.cpp
2024-05-03 03:33:46 +03:00

908 lines
30 KiB
C++

#include "dll/auth.h"
#define STEAM_ID_OFFSET_TICKET (4 + 8)
#define STEAM_TICKET_MIN_SIZE (4 + 8 + 8)
#define STEAM_TICKET_MIN_SIZE_NEW 170
#define STEAM_TICKET_PROCESS_TIME 0.03
//Conan Exiles doesn't work with 512 or 128, 256 seems to be the good size
// Usually steam send as 1024 (or recommend sending as that)
//Steam returns 234
#define STEAM_AUTH_TICKET_SIZE 256 //234
static inline int generate_random_int() {
int a;
randombytes((char *)&a, sizeof(a));
return a;
}
static uint32 generate_steam_ticket_id() {
/* not random starts with 2? */
static uint32 a = 1;
++a;
// this must never return 0, it is reserved for "k_HAuthTicketInvalid" when the auth APIs fail
if (a == 0) ++a;
return a;
}
static uint32_t get_ticket_count() {
static uint32_t a = 0;
++a;
// this must never return 0, on overflow just go back to 1 again
if (a == 0) a = 1;
return a;
}
// source: https://github.com/Detanup01/stmsrv/blob/main/Cert/AppTicket.key
// thanks Detanup01
const static std::string app_ticket_key =
"-----BEGIN PRIVATE KEY-----\n"
"MIICdgIBADANBgkqhkiG9w0BAQEFAASCAmAwggJcAgEAAoGBAMITHOY6pfsvaGTI\n"
"llmilPa1+ev4BsUV0IW3+F/3pQlZ+o57CO1HbepSh2a37cbGUSehOVQ7lREPVXP3\n"
"UdyF5tU5IMytJef5N7euM5z2IG9IszeOReO87h2AmtlwGqnRj7qd0MeVxSAuUq7P\n"
"C/Ir1VyOg58+wAKxaPL18upylnGJAgMBAAECgYEAnKQQj0KG9VYuTCoaL/6pfPcj\n"
"4PEvhaM1yrfSIKMg8YtOT/G+IsWkUZyK7L1HjUhD+FiIjRQKHNrjfdYAnJz20Xom\n"
"k6iVt7ugihIne1Q3pGYG8TY9P1DPdN7zEnAVY1Bh2PAlqJWrif3v8v1dUGE/dYr2\n"
"U3M0JhvzO7VL1B/chIECQQDqW9G5azGMA/cL4jOg0pbj9GfxjJZeT7M2rBoIaRWP\n"
"C3ROndyb+BNahlKk6tbvqillvvMQQiSFGw/PbmCwtLL3AkEA0/79W0q9d3YCXQGW\n"
"k3hQvR8HEbxLmRaRF2gU4MOa5C0JqwsmxzdK4mKoJCpVAiu1gmFonLjn2hm8i+vK\n"
"b7hffwJAEiMpCACTxRJJfFH1TOz/YIT5xmfq+0GPzRtkqGH5mSh5x9vPxwJb/RWI\n"
"L9s85y90JLuyc/+qc+K0Rol0Ujip4QJAGLXVJEn+8ajAt8SSn5fbmV+/fDK9gRef\n"
"S+Im5NgH+ubBBL3lBD2Orfqf7K8+f2VG3+6oufPXmpV7Y7fVPdZ40wJALDujJXgi\n"
"XiCBSht1YScYjfmJh2/xZWh8/w+vs5ZTtrnW2FQvfvVDG9c1hrChhpvmA0QxdgWB\n"
"zSsAno/utcuB9w==\n"
"-----END PRIVATE KEY-----\n";
static std::vector<uint8_t> sign_auth_data(const std::string &private_key_content, const std::vector<uint8_t> &data, size_t effective_data_len)
{
std::vector<uint8_t> signature{};
// Hash the data using SHA-1
constexpr static int SHA1_DIGEST_LENGTH = 20;
uint8_t hash[SHA1_DIGEST_LENGTH]{};
int result = mbedtls_sha1(data.data(), effective_data_len, hash);
if (result != 0) {
#ifndef EMU_RELEASE_BUILD
// we nedd a live object until the printf does its job, hence this special handling
std::string err_msg(256, 0);
mbedtls_strerror(result, &err_msg[0], err_msg.size());
PRINT_DEBUG("failed to hash the data via SHA1: %s", err_msg.c_str());
#endif
return signature;
}
mbedtls_entropy_context entropy_ctx; // entropy context for random number generation
mbedtls_entropy_init(&entropy_ctx);
mbedtls_ctr_drbg_context ctr_drbg_ctx; // CTR-DRBG context for deterministic random number generation
mbedtls_ctr_drbg_init(&ctr_drbg_ctx);
// seed the CTR-DRBG context with random numbers
result = mbedtls_ctr_drbg_seed(&ctr_drbg_ctx, mbedtls_entropy_func, &entropy_ctx, nullptr, 0);
if (mbedtls_ctr_drbg_seed(&ctr_drbg_ctx, mbedtls_entropy_func, &entropy_ctx, nullptr, 0) != 0) {
mbedtls_ctr_drbg_free(&ctr_drbg_ctx);
mbedtls_entropy_free(&entropy_ctx);
#ifndef EMU_RELEASE_BUILD
// we nedd a live object until the printf does its job, hence this special handling
std::string err_msg(256, 0);
mbedtls_strerror(result, &err_msg[0], err_msg.size());
PRINT_DEBUG("failed to seed the CTR-DRBG context: %s", err_msg.c_str());
#endif
return signature;
}
mbedtls_pk_context private_key_ctx; // holds the parsed private key
mbedtls_pk_init(&private_key_ctx);
result = mbedtls_pk_parse_key(
&private_key_ctx, // will hold the parsed private key
(const unsigned char *)private_key_content.c_str(),
private_key_content.size() + 1, // we MUST include the null terminator, otherwise this API returns an error!
nullptr, 0, // no password stuff, private key isn't protected
mbedtls_ctr_drbg_random, &ctr_drbg_ctx // random number generation function + the CTR-DRBG context it requires as an input
);
if (result != 0) {
mbedtls_pk_free(&private_key_ctx);
mbedtls_ctr_drbg_free(&ctr_drbg_ctx);
mbedtls_entropy_free(&entropy_ctx);
#ifndef EMU_RELEASE_BUILD
// we nedd a live object until the printf does its job, hence this special handling
std::string err_msg(256, 0);
mbedtls_strerror(result, &err_msg[0], err_msg.size());
PRINT_DEBUG("failed to parse private key: %s", err_msg.c_str());
#endif
return signature;
}
// private key must be valid RSA key
if (mbedtls_pk_get_type(&private_key_ctx) != MBEDTLS_PK_RSA || // invalid type
mbedtls_pk_can_do(&private_key_ctx, MBEDTLS_PK_RSA) == 0) { // or initialized but not properly setup (maybe freed?)
mbedtls_pk_free(&private_key_ctx);
mbedtls_ctr_drbg_free(&ctr_drbg_ctx);
mbedtls_entropy_free(&entropy_ctx);
PRINT_DEBUG("parsed key is not a valid RSA private key");
return signature;
}
// get the underlying RSA context from the parsed private key
mbedtls_rsa_context* rsa_ctx = mbedtls_pk_rsa(private_key_ctx);
// resize the output buffer to accomodate the size of the private key
const size_t private_key_len = mbedtls_pk_get_len(&private_key_ctx);
if (private_key_len == 0) { // TODO must be 128 siglen
mbedtls_pk_free(&private_key_ctx);
mbedtls_ctr_drbg_free(&ctr_drbg_ctx);
mbedtls_entropy_free(&entropy_ctx);
PRINT_DEBUG("failed to get private key (final buffer) length");
return signature;
}
PRINT_DEBUG("computed private key (final buffer) length = %zu", private_key_len);
signature.resize(private_key_len);
// finally sign the computed hash using RSA and PKCS#1 padding
result = mbedtls_rsa_pkcs1_sign(
rsa_ctx,
mbedtls_ctr_drbg_random, &ctr_drbg_ctx,
MBEDTLS_MD_SHA1, // we used SHA1 to hash the data
sizeof(hash), hash,
signature.data() // output
);
mbedtls_pk_free(&private_key_ctx);
mbedtls_ctr_drbg_free(&ctr_drbg_ctx);
mbedtls_entropy_free(&entropy_ctx);
if (result != 0) {
signature.clear();
#ifndef EMU_RELEASE_BUILD
// we nedd a live object until the printf does its job, hence this special handling
std::string err_msg(256, 0);
mbedtls_strerror(result, &err_msg[0], err_msg.size());
PRINT_DEBUG("RSA signing failed: %s", err_msg.c_str());
#endif
}
#ifndef EMU_RELEASE_BUILD
// we nedd a live object until the printf does its job, hence this special handling
auto str = common_helpers::uint8_vector_to_hex_string(signature);
PRINT_DEBUG("final signature [%zu bytes]:\n %s", signature.size(), str.c_str());
#endif
return signature;
}
std::vector<uint8_t> DLC::Serialize() const
{
PRINT_DEBUG("AppId = %u, Licenses count = %zu", AppId, Licenses.size());
// we need this variable because we depend on the sizeof, must be 2 bytes
const uint16_t dlcs_licenses_count = (uint16_t)Licenses.size();
const size_t dlcs_licenses_total_size =
Licenses.size() * sizeof(Licenses[0]); // count * element size
const size_t total_size =
sizeof(AppId) +
sizeof(dlcs_licenses_count) +
dlcs_licenses_total_size;
std::vector<uint8_t> buffer{};
buffer.resize(total_size);
uint8_t* pBuffer = &buffer[0];
#define SER_VAR(v) \
*reinterpret_cast<std::remove_const<decltype(v)>::type *>(pBuffer) = v; \
pBuffer += sizeof(v)
SER_VAR(AppId);
SER_VAR(dlcs_licenses_count);
for(uint32_t dlc_license : Licenses) {
SER_VAR(dlc_license);
}
#undef SER_VAR
PRINT_DEBUG("final size = %zu", buffer.size());
return buffer;
}
std::vector<uint8_t> AppTicketGC::Serialize() const
{
const uint64_t steam_id = id.ConvertToUint64();
// must be 52
constexpr size_t total_size =
sizeof(STEAM_APPTICKET_GCLen) +
sizeof(GCToken) +
sizeof(steam_id) +
sizeof(ticketGenDate) +
sizeof(STEAM_APPTICKET_SESSIONLEN) +
sizeof(one) +
sizeof(two) +
sizeof(ExternalIP) +
sizeof(InternalIP) +
sizeof(TimeSinceStartup) +
sizeof(TicketGeneratedCount);
// check the size at compile time, we must ensure the correct size
#ifndef EMU_RELEASE_BUILD
static_assert(
total_size == 52,
"AUTH::AppTicketGC::SER calculated size of serialized data != 52 bytes, your compiler has some incorrect sizes"
);
#endif
PRINT_DEBUG(
"\n"
" GCToken: " "%" PRIu64 "\n"
" user steam_id: " "%" PRIu64 "\n"
" ticketGenDate: %u\n"
" ExternalIP: 0x%08X, InternalIP: 0x%08X\n"
" TimeSinceStartup: %u, TicketGeneratedCount: %u\n"
" SER size = %zu",
GCToken,
steam_id,
ticketGenDate,
ExternalIP, InternalIP,
TimeSinceStartup, TicketGeneratedCount,
total_size
);
std::vector<uint8_t> buffer{};
buffer.resize(total_size);
uint8_t* pBuffer = &buffer[0];
#define SER_VAR(v) \
*reinterpret_cast<std::remove_const<decltype(v)>::type *>(pBuffer) = v; \
pBuffer += sizeof(v)
SER_VAR(STEAM_APPTICKET_GCLen);
SER_VAR(GCToken);
SER_VAR(steam_id);
SER_VAR(ticketGenDate);
SER_VAR(STEAM_APPTICKET_SESSIONLEN);
SER_VAR(one);
SER_VAR(two);
SER_VAR(ExternalIP);
SER_VAR(InternalIP);
SER_VAR(TimeSinceStartup);
SER_VAR(TicketGeneratedCount);
#undef SER_VAR
#ifndef EMU_RELEASE_BUILD
// we nedd a live object until the printf does its job, hence this special handling
auto str = common_helpers::uint8_vector_to_hex_string(buffer);
PRINT_DEBUG("final data [%zu bytes]:\n %s", buffer.size(), str.c_str());
#endif
return buffer;
}
std::vector<uint8_t> AppTicket::Serialize() const
{
const uint64_t steam_id = id.ConvertToUint64();
PRINT_DEBUG(
"\n"
" Version: %u\n"
" user steam_id: " "%" PRIu64 "\n"
" AppId: %u\n"
" ExternalIP: 0x%08X, InternalIP: 0x%08X\n"
" TicketGeneratedDate: %u, TicketGeneratedExpireDate: %u\n"
" Licenses count: %zu, DLCs count: %zu",
Version,
steam_id,
AppId,
ExternalIP, InternalIP,
TicketGeneratedDate, TicketGeneratedExpireDate,
Licenses.size(), DLCs.size()
);
// we need this variable because we depend on the sizeof, must be 2 bytes
const uint16_t licenses_count = (uint16_t)Licenses.size();
const size_t licenses_total_size =
Licenses.size() * sizeof(Licenses[0]); // total count * element size
// we need this variable because we depend on the sizeof, must be 2 bytes
const uint16_t dlcs_count = (uint16_t)DLCs.size();
size_t dlcs_total_size = 0;
std::vector<std::vector<uint8_t>> serialized_dlcs{};
for (const DLC &dlc : DLCs) {
auto dlc_ser = dlc.Serialize();
dlcs_total_size += dlc_ser.size();
serialized_dlcs.push_back(dlc_ser);
}
//padding
constexpr uint16_t padding = (uint16_t)0;
// must be 42
constexpr size_t static_fields_size =
sizeof(Version) +
sizeof(steam_id) +
sizeof(AppId) +
sizeof(ExternalIP) +
sizeof(InternalIP) +
sizeof(AlwaysZero) +
sizeof(TicketGeneratedDate) +
sizeof(TicketGeneratedExpireDate) +
sizeof(licenses_count) +
sizeof(dlcs_count) +
sizeof(padding);
// check the size at compile time, we must ensure the correct size
#ifndef EMU_RELEASE_BUILD
static_assert(
static_fields_size == 42,
"AUTH::AppTicket::SER calculated size of serialized data != 42 bytes, your compiler has some incorrect sizes"
);
#endif
const size_t total_size =
static_fields_size +
licenses_total_size +
dlcs_total_size;
PRINT_DEBUG("final size = %zu", total_size);
std::vector<uint8_t> buffer{};
buffer.resize(total_size);
uint8_t* pBuffer = &buffer[0];
#define SER_VAR(v) \
*reinterpret_cast<std::remove_const<decltype(v)>::type *>(pBuffer) = v; \
pBuffer += sizeof(v)
SER_VAR(Version);
SER_VAR(steam_id);
SER_VAR(AppId);
SER_VAR(ExternalIP);
SER_VAR(InternalIP);
SER_VAR(AlwaysZero);
SER_VAR(TicketGeneratedDate);
SER_VAR(TicketGeneratedExpireDate);
#ifndef EMU_RELEASE_BUILD
{
// we nedd a live object until the printf does its job, hence this special handling
auto str = common_helpers::uint8_vector_to_hex_string(buffer);
PRINT_DEBUG("(before licenses + DLCs):\n %s", str.c_str());
}
#endif
/*
* layout of licenses:
* ------------------------
* 2 bytes: count of licenses
* ------------------------
* [
* ------------------------
* | 4 bytes: license element
* ------------------------
* ]
*/
SER_VAR(licenses_count);
for(uint32_t license : Licenses) {
SER_VAR(license);
}
/*
* layout of DLCs:
* ------------------------
* | 2 bytes: count of DLCs
* ------------------------
* [
* ------------------------
* | 4 bytes: app id
* ------------------------
* | 2 bytes: DLC licenses count
* ------------------------
* [
* 4 bytes: DLC license element
* ]
* ]
*/
SER_VAR(dlcs_count);
for (const auto &dlc_ser : serialized_dlcs){
memcpy(pBuffer, dlc_ser.data(), dlc_ser.size());
pBuffer += dlc_ser.size();
}
//padding
SER_VAR(padding);
#undef SER_VAR
#ifndef EMU_RELEASE_BUILD
{
// we nedd a live object until the printf does its job, hence this special handling
auto str = common_helpers::uint8_vector_to_hex_string(buffer);
PRINT_DEBUG("final data [%zu bytes]:\n %s", buffer.size(), str.c_str());
}
#endif
return buffer;
}
std::vector<uint8_t> Auth_Data::Serialize() const
{
/*
* layout of Auth_Data with GC:
* ------------------------
* X bytes: GC data blob (currently 52 bytes)
* ------------------------
* 4 bytes: remaining Auth_Data blob size (4 + Y + Z)
* ------------------------
* 4 bytes: size of ticket data layout (not blob!, hence blob + 4)
* ------------------------
* Y bytes: ticket data blob
* ------------------------
* Z bytes: App Ticket signature
* ------------------------
*
* total layout length = X + 4 + 4 + Y + Z
*/
/*
* layout of Auth_Data without GC:
* ------------------------
* 4 bytes: size of ticket data layout (not blob!, hence blob + 4)
* ------------------------
* Y bytes: ticket data blob
* ------------------------
* Z bytes: App Ticket signature
* ------------------------
*
* total layout length = 4 + Y + Z
*/
const uint64_t steam_id = id.ConvertToUint64();
PRINT_DEBUG(
"\n"
" HasGC: %u\n"
" user steam_id: " "%" PRIu64 "\n"
" number: " "%" PRIu64 ,
(int)HasGC,
steam_id,
number
);
/*
* layout of ticket data:
* ------------------------
* 4 bytes: size of ticket data layout (not blob!, hence blob + 4)
* ------------------------
* Y bytes: ticket data blob
* ------------------------
*
* total layout length = 4 + Y
*/
std::vector<uint8_t> tickedData = Ticket.Serialize();
// we need this variable because we depend on the sizeof, must be 4 bytes
const uint32_t ticket_data_layout_length =
sizeof(uint32_t) + // size of this uint32_t because it is included!
(uint32_t)tickedData.size();
size_t total_size_without_siglen = ticket_data_layout_length;
std::vector<uint8_t> GCData{};
size_t gc_data_layout_length = 0;
if (HasGC) {
/*
* layout of GC data:
* ------------------------
* X bytes: GC data blob (currently 52 bytes)
* ------------------------
* 4 bytes: remaining Auth_Data blob size
* ------------------------
*
* total layout length = X + 4
*/
GCData = GC.Serialize();
gc_data_layout_length +=
GCData.size() +
sizeof(uint32_t);
total_size_without_siglen += gc_data_layout_length;
}
const size_t final_buffer_size = total_size_without_siglen + STEAM_APPTICKET_SIGLEN;
PRINT_DEBUG("size without sig len = %zu, size with sig len (final size) = %zu",
total_size_without_siglen,
final_buffer_size
);
std::vector<uint8_t> buffer;
buffer.resize(final_buffer_size);
uint8_t* pBuffer = &buffer[0];
#define SER_VAR(v) \
*reinterpret_cast<std::remove_const<decltype(v)>::type *>(pBuffer) = v; \
pBuffer += sizeof(v)
// serialize the GC data first
if (HasGC) {
memcpy(pBuffer, GCData.data(), GCData.size());
pBuffer += GCData.size();
// when GC data is written (HasGC),
// the next 4 bytes after the GCData will be the length of the remaining data in the final buffer
// i.e. final buffer size - length of GCData layout
// i.e. ticket data length + STEAM_APPTICKET_SIGLEN
//
// notice that we subtract the entire layout length, not just GCData.size(),
// otherwise these next 4 bytes will include themselves!
uint32_t remaining_length = (uint32_t)(final_buffer_size - gc_data_layout_length);
SER_VAR(remaining_length);
}
// serialize the ticket data
SER_VAR(ticket_data_layout_length);
memcpy(pBuffer, tickedData.data(), tickedData.size());
#ifndef EMU_RELEASE_BUILD
{
// we nedd a live object until the printf does its job, hence this special handling
auto str = common_helpers::uint8_vector_to_hex_string(buffer);
PRINT_DEBUG("final data (before signature) [%zu bytes]:\n %s", buffer.size(), str.c_str());
}
#endif
//Todo make a signature
std::vector<uint8_t> signature = sign_auth_data(app_ticket_key, tickedData, total_size_without_siglen);
if (signature.size() == STEAM_APPTICKET_SIGLEN) {
memcpy(buffer.data() + total_size_without_siglen, signature.data(), signature.size());
#ifndef EMU_RELEASE_BUILD
{
// we nedd a live object until the printf does its job, hence this special handling
auto str = common_helpers::uint8_vector_to_hex_string(buffer);
PRINT_DEBUG("final data (after signature) [%zu bytes]:\n %s", buffer.size(), str.c_str());
}
#endif
} else {
PRINT_DEBUG("signature size [%zu] is invalid", signature.size());
}
#undef SER_VAR
return buffer;
}
void Auth_Manager::ticket_callback(void *object, Common_Message *msg)
{
// PRINT_DEBUG_ENTRY();
Auth_Manager *auth_manager = (Auth_Manager *)object;
auth_manager->Callback(msg);
}
Auth_Manager::Auth_Manager(class Settings *settings, class Networking *network, class SteamCallBacks *callbacks)
{
this->network = network;
this->settings = settings;
this->callbacks = callbacks;
this->network->setCallback(CALLBACK_ID_AUTH_TICKET, settings->get_local_steam_id(), &Auth_Manager::ticket_callback, this);
this->network->setCallback(CALLBACK_ID_USER_STATUS, settings->get_local_steam_id(), &Auth_Manager::ticket_callback, this);
}
Auth_Manager::~Auth_Manager()
{
this->network->rmCallback(CALLBACK_ID_AUTH_TICKET, settings->get_local_steam_id(), &Auth_Manager::ticket_callback, this);
this->network->rmCallback(CALLBACK_ID_USER_STATUS, settings->get_local_steam_id(), &Auth_Manager::ticket_callback, this);
}
void Auth_Manager::launch_callback(CSteamID id, EAuthSessionResponse resp, double delay)
{
ValidateAuthTicketResponse_t data{};
data.m_SteamID = id;
data.m_eAuthSessionResponse = resp;
data.m_OwnerSteamID = id;
callbacks->addCBResult(data.k_iCallback, &data, sizeof(data), delay);
}
void Auth_Manager::launch_callback_gs(CSteamID id, bool approved)
{
if (approved) {
GSClientApprove_t data{};
data.m_SteamID = data.m_OwnerSteamID = id;
callbacks->addCBResult(data.k_iCallback, &data, sizeof(data));
} else {
GSClientDeny_t data{};
data.m_SteamID = id;
data.m_eDenyReason = k_EDenyNotLoggedOn; //TODO: other reasons?
callbacks->addCBResult(data.k_iCallback, &data, sizeof(data));
}
}
Auth_Data Auth_Manager::getTicketData( void *pTicket, int cbMaxTicket, uint32 *pcbTicket )
{
#define IP4_AS_DWORD_LITTLE_ENDIAN(a,b,c,d) (((uint32_t)d)<<24 | ((uint32_t)c)<<16 | ((uint32_t)b)<<8 | (uint32_t)a)
Auth_Data ticket_data{};
CSteamID steam_id = settings->get_local_steam_id();
if (settings->enable_new_app_ticket)
{
ticket_data.id = steam_id;
ticket_data.number = generate_steam_ticket_id();
ticket_data.Ticket.Version = 4;
ticket_data.Ticket.id = steam_id;
ticket_data.Ticket.AppId = settings->get_local_game_id().AppID();
ticket_data.Ticket.ExternalIP = IP4_AS_DWORD_LITTLE_ENDIAN(127, 0, 0, 1); //TODO
ticket_data.Ticket.InternalIP = IP4_AS_DWORD_LITTLE_ENDIAN(127, 0, 0, 1);
ticket_data.Ticket.AlwaysZero = 0;
const auto curTime = std::chrono::system_clock::now();
const auto GenDate = std::chrono::duration_cast<std::chrono::seconds>(curTime.time_since_epoch());
ticket_data.Ticket.TicketGeneratedDate = (uint32_t)GenDate.count();
uint32_t expTime = (uint32_t)(GenDate + std::chrono::hours(24)).count();
ticket_data.Ticket.TicketGeneratedExpireDate = expTime;
ticket_data.Ticket.Licenses.resize(0);
ticket_data.Ticket.Licenses.push_back(0); //TODO
unsigned int dlcCount = settings->DLCCount();
ticket_data.Ticket.DLCs.resize(0); //currently set to 0
for (int i = 0; i < dlcCount; ++i)
{
DLC dlc;
AppId_t appid;
bool available;
std::string name;
if (!settings->getDLC(i, appid, available, name)) break;
dlc.AppId = (uint32_t)appid;
dlc.Licenses.resize(0); //TODO
ticket_data.Ticket.DLCs.push_back(dlc);
}
ticket_data.HasGC = false;
if (settings->use_gc_token)
{
ticket_data.HasGC = true;
ticket_data.GC.GCToken = generate_random_int();
ticket_data.GC.id = steam_id;
ticket_data.GC.ticketGenDate = (uint32_t)GenDate.count();
ticket_data.GC.ExternalIP = IP4_AS_DWORD_LITTLE_ENDIAN(127, 0, 0, 1);
ticket_data.GC.InternalIP = IP4_AS_DWORD_LITTLE_ENDIAN(127, 0, 0, 1);
ticket_data.GC.TimeSinceStartup = (uint32_t)std::chrono::duration_cast<std::chrono::seconds>(curTime - startup_time).count();
ticket_data.GC.TicketGeneratedCount = get_ticket_count();
}
std::vector<uint8_t> ser = ticket_data.Serialize();
*pcbTicket = ser.size();
if (cbMaxTicket >= ser.size())
memcpy(pTicket, ser.data(), ser.size());
}
else
{
memset(pTicket, 123, cbMaxTicket);
((char *)pTicket)[0] = 0x14;
((char *)pTicket)[1] = 0;
((char *)pTicket)[2] = 0;
((char *)pTicket)[3] = 0;
uint64 steam_id_buff = steam_id.ConvertToUint64();
memcpy((char *)pTicket + STEAM_ID_OFFSET_TICKET, &steam_id_buff, sizeof(steam_id_buff));
*pcbTicket = cbMaxTicket;
ticket_data.id = steam_id;
ticket_data.number = generate_steam_ticket_id();
uint32 ttt = ticket_data.number;
memcpy(((char *)pTicket) + sizeof(uint64), &ttt, sizeof(ttt));
}
#undef IP4_AS_DWORD_LITTLE_ENDIAN
return ticket_data;
}
HAuthTicket Auth_Manager::getTicket( void *pTicket, int cbMaxTicket, uint32 *pcbTicket )
{
if (settings->enable_new_app_ticket)
{
if (cbMaxTicket < STEAM_TICKET_MIN_SIZE_NEW) return k_HAuthTicketInvalid;
}
else
{
if (cbMaxTicket < STEAM_TICKET_MIN_SIZE) return k_HAuthTicketInvalid;
if (cbMaxTicket > STEAM_AUTH_TICKET_SIZE) cbMaxTicket = STEAM_AUTH_TICKET_SIZE;
}
Auth_Data ticket_data = getTicketData(pTicket, cbMaxTicket, pcbTicket );
if (*pcbTicket > cbMaxTicket)
return k_HAuthTicketInvalid;
GetAuthSessionTicketResponse_t data{};
data.m_hAuthTicket = (HAuthTicket)ticket_data.number;
data.m_eResult = EResult::k_EResultOK;
callbacks->addCBResult(data.k_iCallback, &data, sizeof(data), STEAM_TICKET_PROCESS_TIME);
outbound.push_back(ticket_data);
return data.m_hAuthTicket;
}
HAuthTicket Auth_Manager::getWebApiTicket( const char* pchIdentity )
{
// https://docs.unity.com/ugs/en-us/manual/authentication/manual/platform-signin-steam
GetTicketForWebApiResponse_t data{};
uint32 cbTicket = 0;
Auth_Data ticket_data = getTicketData(data.m_rgubTicket, sizeof(data.m_rgubTicket), &cbTicket);
if (cbTicket > sizeof(data.m_rgubTicket))
return k_HAuthTicketInvalid;
data.m_cubTicket = (int)cbTicket;
data.m_hAuthTicket = (HAuthTicket)ticket_data.number;
data.m_eResult = EResult::k_EResultOK;
callbacks->addCBResult(data.k_iCallback, &data, sizeof(data), STEAM_TICKET_PROCESS_TIME);
outbound.push_back(ticket_data);
return data.m_hAuthTicket;
}
CSteamID Auth_Manager::fakeUser()
{
Auth_Data data = {};
data.id = generate_steam_anon_user();
inbound.push_back(data);
return data.id;
}
void Auth_Manager::cancelTicket(uint32 number)
{
auto ticket = std::find_if(outbound.begin(), outbound.end(), [&number](Auth_Data const& item) { return item.number == number; });
if (outbound.end() == ticket)
return;
Auth_Ticket *auth_ticket = new Auth_Ticket();
auth_ticket->set_number(number);
auth_ticket->set_type(Auth_Ticket::CANCEL);
Common_Message msg;
msg.set_source_id(settings->get_local_steam_id().ConvertToUint64());
msg.set_allocated_auth_ticket(auth_ticket);
network->sendToAll(&msg, true);
outbound.erase(ticket);
}
bool Auth_Manager::SendUserConnectAndAuthenticate( uint32 unIPClient, const void *pvAuthBlob, uint32 cubAuthBlobSize, CSteamID *pSteamIDUser )
{
if (cubAuthBlobSize < STEAM_TICKET_MIN_SIZE) return false;
Auth_Data data;
uint64 id;
memcpy(&id, (char *)pvAuthBlob + STEAM_ID_OFFSET_TICKET, sizeof(id));
uint32 number;
memcpy(&number, ((char *)pvAuthBlob) + sizeof(uint64), sizeof(number));
data.id = CSteamID(id);
data.number = number;
if (pSteamIDUser) *pSteamIDUser = data.id;
for (auto & t : inbound) {
if (t.id == data.id) {
//Should this return false?
launch_callback_gs(id, true);
return true;
}
}
inbound.push_back(data);
launch_callback_gs(id, true);
return true;
}
EBeginAuthSessionResult Auth_Manager::beginAuth(const void *pAuthTicket, int cbAuthTicket, CSteamID steamID )
{
if (cbAuthTicket < STEAM_TICKET_MIN_SIZE) return k_EBeginAuthSessionResultInvalidTicket;
Auth_Data data;
uint64 id;
memcpy(&id, (char *)pAuthTicket + STEAM_ID_OFFSET_TICKET, sizeof(id));
uint32 number;
memcpy(&number, ((char *)pAuthTicket) + sizeof(uint64), sizeof(number));
data.id = CSteamID(id);
data.number = number;
data.created = std::chrono::high_resolution_clock::now();
for (auto & t : inbound) {
if (t.id == data.id && !check_timedout(t.created, STEAM_TICKET_PROCESS_TIME)) {
return k_EBeginAuthSessionResultDuplicateRequest;
}
}
inbound.push_back(data);
launch_callback(steamID, k_EAuthSessionResponseOK, STEAM_TICKET_PROCESS_TIME);
return k_EBeginAuthSessionResultOK;
}
uint32 Auth_Manager::countInboundAuth()
{
return inbound.size();
}
bool Auth_Manager::endAuth(CSteamID id)
{
bool erased = false;
auto t = std::begin(inbound);
while (t != std::end(inbound)) {
if (t->id == id) {
erased = true;
t = inbound.erase(t);
} else {
++t;
}
}
return erased;
}
void Auth_Manager::Callback(Common_Message *msg)
{
if (msg->has_low_level()) {
if (msg->low_level().type() == Low_Level::CONNECT) {
}
if (msg->low_level().type() == Low_Level::DISCONNECT) {
PRINT_DEBUG("TICKET DISCONNECT");
auto t = std::begin(inbound);
while (t != std::end(inbound)) {
if (t->id.ConvertToUint64() == msg->source_id()) {
launch_callback(t->id, k_EAuthSessionResponseUserNotConnectedToSteam);
t = inbound.erase(t);
} else {
++t;
}
}
}
}
if (msg->has_auth_ticket()) {
if (msg->auth_ticket().type() == Auth_Ticket::CANCEL) {
PRINT_DEBUG("TICKET CANCEL " "%" PRIu64, msg->source_id());
uint32 number = msg->auth_ticket().number();
auto t = std::begin(inbound);
while (t != std::end(inbound)) {
if (t->id.ConvertToUint64() == msg->source_id() && t->number == number) {
PRINT_DEBUG("TICKET CANCELED");
launch_callback(t->id, k_EAuthSessionResponseAuthTicketCanceled);
t = inbound.erase(t);
} else {
++t;
}
}
}
}
}