Implement the buggy version of llXorBase64Strings() for compatibility's sake
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7eb95c9ed9
commit
4f04ec5fc2
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@ -8676,10 +8676,91 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
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public LSL_String llXorBase64Strings(string str1, string str2)
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{
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m_host.AddScriptLPS(1);
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Deprecated("llXorBase64Strings");
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string b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
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ScriptSleep(300);
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m_host.AddScriptLPS(1);
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if (str1 == String.Empty)
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return String.Empty;
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if (str2 == String.Empty)
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return str1;
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int len = str2.Length;
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if ((len % 4) != 0) // LL is EVIL!!!!
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{
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while (str2.EndsWith("="))
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str2 = str2.Substring(0, str2.Length - 1);
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len = str2.Length;
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int mod = len % 4;
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if (mod == 1)
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str2 = str2.Substring(0, str2.Length - 1);
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else if (mod == 2)
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str2 += "==";
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else if (mod == 3)
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str2 += "=";
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}
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byte[] data1;
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byte[] data2;
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try
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{
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data1 = Convert.FromBase64String(str1);
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data2 = Convert.FromBase64String(str2);
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}
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catch (Exception)
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{
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return new LSL_String(String.Empty);
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}
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// For cases where the decoded length of s2 is greater
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// than the decoded length of s1, simply perform a normal
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// decode and XOR
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//
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if (data2.Length >= data1.Length)
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{
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for (int pos = 0 ; pos < data1.Length ; pos++ )
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data1[pos] ^= data2[pos];
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return Convert.ToBase64String(data1);
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}
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// Remove padding
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while (str1.EndsWith("="))
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str1 = str1.Substring(0, str1.Length - 1);
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while (str2.EndsWith("="))
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str2 = str2.Substring(0, str2.Length - 1);
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byte[] d1 = new byte[str1.Length];
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byte[] d2 = new byte[str2.Length];
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for (int i = 0 ; i < str1.Length ; i++)
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{
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int idx = b64.IndexOf(str1.Substring(i, 1));
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if (idx == -1)
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idx = 0;
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d1[i] = (byte)idx;
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}
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for (int i = 0 ; i < str2.Length ; i++)
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{
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int idx = b64.IndexOf(str2.Substring(i, 1));
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if (idx == -1)
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idx = 0;
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d2[i] = (byte)idx;
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}
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string output = String.Empty;
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for (int pos = 0 ; pos < d1.Length ; pos++)
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output += b64[d1[pos] ^ d2[pos % d2.Length]];
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while (output.Length % 3 > 0)
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output += "=";
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return output;
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}
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public void llRemoteDataSetRegion()
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