void Client::startAuth(AuthMechanism chosen_auth_mechanism)
{
m_chosen_auth_mech = chosen_auth_mechanism;
switch (chosen_auth_mechanism) {
case AUTH_MECHANISM_FIRST_SRP: {
// send srp verifier to server
NetworkPacket resp_pkt(TOSERVER_FIRST_SRP, 0);
char *salt, *bytes_v;
std::size_t len_salt, len_v;
salt = NULL;
getSRPVerifier(getPlayerName(), m_password,
&salt, &len_salt, &bytes_v, &len_v);
resp_pkt
<< std::string((char*)salt, len_salt)
<< std::string((char*)bytes_v, len_v)
<< (u8)((m_password == "") ? 1 : 0);
free(salt);
free(bytes_v);
Send(&resp_pkt);
break;
}
case AUTH_MECHANISM_SRP:
case AUTH_MECHANISM_LEGACY_PASSWORD: {
u8 based_on = 1;
if (chosen_auth_mechanism == AUTH_MECHANISM_LEGACY_PASSWORD) {
m_password = translatePassword(getPlayerName(), m_password);
based_on = 0;
}
std::string playername_u = lowercase(getPlayerName());
m_auth_data = srp_user_new(SRP_SHA256, SRP_NG_2048,
getPlayerName().c_str(), playername_u.c_str(),
(const unsigned char *) m_password.c_str(),
m_password.length(), NULL, NULL);
char *bytes_A = 0;
size_t len_A = 0;
SRP_Result res = srp_user_start_authentication(
(struct SRPUser *) m_auth_data, NULL, NULL, 0,
(unsigned char **) &bytes_A, &len_A);
FATAL_ERROR_IF(res != SRP_OK, "Creating local SRP user failed.");
NetworkPacket resp_pkt(TOSERVER_SRP_BYTES_A, 0);
resp_pkt << std::string(bytes_A, len_A) << based_on;
Send(&resp_pkt);
break;
}
case AUTH_MECHANISM_NONE:
break; // not handled in this method
}
}
void Client::handleCommand_AuthAccept(NetworkPacket* pkt)
{
deleteAuthData();
v3f playerpos;
*pkt >> playerpos >> m_map_seed >> m_recommended_send_interval
>> m_sudo_auth_methods;
playerpos -= v3f(0, BS / 2, 0);
// Set player position
Player *player = m_env.getLocalPlayer();
assert(player != NULL);
player->setPosition(playerpos);
infostream << "Client: received map seed: " << m_map_seed << std::endl;
infostream << "Client: received recommended send interval "
<< m_recommended_send_interval<<std::endl;
// Reply to server
NetworkPacket resp_pkt(TOSERVER_INIT2, 0);
Send(&resp_pkt);
m_state = LC_Init;
}
