To ensure that several services could only be invoked by trusted parties, someone at Ricardo P's employer had the brilliant idea of requiring a token along with each request. Before servicing a request, they added this check:

private bool IsValidToken(string? token)
{
    if (string.Equals("xxxxxxxx-xxxxxx+xxxxxxx+xxxxxx-xxxxxx-xxxxxx+xxxxx", token)) return true;
    return false;
}

The token is anonymized here, but it's hard-coded into the code, because checking security tokens into source control, and having tokens that never expire has never caused anyone any trouble.

Which, in the company's defense, they did want the token to expire. The problem there is that they wanted to be able to roll out the new token to all of their services over time, which meant the system had to be able to support both the old and new token for a period of time. And you know exactly how they handled that.

private bool IsValidToken(string? token)
{
    if (string.Equals("xxxxxxxx-xxxxxx+xxxxxxx+xxxxxx-xxxxxx-xxxxxx+xxxxx", token)) return true;
    else if (string.Equals("yyyyyyy-yyyyyy+yyyyy+yyyyy-yyyyy-yyyyy+yyyy", token)) return true;
    return false;
}

For a change, I'm more mad about this insecurity than the if(cond) return true pattern, but boy, I hate that pattern.

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