I wrote this quickly for people who need the old style Steam IDs for their plugins until they get a chance to properly patch it.
Code:
stock bool:GetClientAuthString_Steam2(client, String:authStringDest[], strSize, bool:validate = true)
{
new accountID = GetSteamAccountID(client, validate);
if(accountID == 0)
return false;
FormatEx(authStringDest, strSize, "STEAM_0:%i:%i", (accountID % 2), accountID / 2);
return true;
}
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