private void btnBoolGadConvert_Click(object sender, EventArgs e)
{
bool inputError = false;
bool dirBoolToGad = radioBoolToGad.Checked;
if (dirBoolToGad)
{
if (textBool0.Text.Length != 114 || textBool1.Text.Length != 114 ||
textBool2.Text.Length != 114 || textBool3.Text.Length != 114)
{
inputError = true;
}
MessageBox.Show("not supported yet!");
return;
}
else
{
byte[] byteBuf = new byte[19];
GSMParameters param = new GSMParameters();
SDCCHBurst sdcch = new SDCCHBurst();
ByteUtil.BytesFromString(textGad0.Text, ref byteBuf);
sdcch.ParseData(param, ByteUtil.BitsFromBytes(byteBuf), 0);
ByteUtil.BytesFromString(textGad1.Text, ref byteBuf);
sdcch.ParseData(param, ByteUtil.BitsFromBytes(byteBuf), 1);
ByteUtil.BytesFromString(textGad2.Text, ref byteBuf);
sdcch.ParseData(param, ByteUtil.BitsFromBytes(byteBuf), 2);
ByteUtil.BytesFromString(textGad3.Text, ref byteBuf);
sdcch.ParseData(param, ByteUtil.BitsFromBytes(byteBuf), 3);
bool[][] boolBuf = new bool[4][];
for (int i = 0; i < boolBuf.Length; i++)
{
boolBuf[i] = new bool[114];
}
sdcch.L1BurstEGet(ref boolBuf);
if (boolBuf == null)
{
MessageBox.Show("error reading bits");
return;
}
textBool0.Text = ByteUtil.BitsToString(boolBuf[0]);
textBool1.Text = ByteUtil.BitsToString(boolBuf[1]);
textBool2.Text = ByteUtil.BitsToString(boolBuf[2]);
textBool3.Text = ByteUtil.BitsToString(boolBuf[3]);
}
}
public void Read(bool[] bitsDownlink, bool[] bitsUplink)
{
lock (this)
{
if (DumpStream != null)
{
long deltaSlots = (FN - Parameters.FN) * 8 + (TN - Parameters.TN);
/* does the analyzer want the next burst or are we too far away? (need synchronization) */
if (deltaSlots <= 1 || deltaSlots > (DeltaFrameCount * 8))
{
/* give him the actual data */
Parameters.FN = FN;
Parameters.TN = TN;
/* do not set ARFCN if we are not sure about its value */
if (ARFCN != -1)
{
Parameters.ARFCN = ARFCN;
}
ByteUtil.BitsFromBytes(DataDown, bitsDownlink, 8, 0, 148);
if (bitsUplink != null)
{
ByteUtil.BitsFromBytes(DataUp, bitsUplink, 8, 0, 148);
}
ReadNextRecord();
}
else
{
/* fake some dummy bursts here. those were omitted in the dump. */
Array.Copy(DummyBits, bitsDownlink, 148);
Array.Copy(DummyBits, bitsUplink, 148);
/* also update TN and such */
Parameters.TN++;
Parameters.TN %= 8;
if (Parameters.TN == 0)
{
Parameters.FN++;
}
}
}
}
}
public GsmAnalyzerDumpReader(GSMParameters param, string fileName)
{
DumpFileName = fileName;
Parameters = param;
ByteUtil.BitsFromBytes(GsmAnalyzerDumpWriter.DummyData, DummyBits, 8, 0, 148);
try
{
FileIsBeingUpdated = IsBeingUpdated();
DumpFile = File.Open(DumpFileName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
DumpStream = new StreamReader(DumpFile);
ReadNextRecord();
}
catch (Exception e)
{
}
}
/* Test the code by comparing it against a known-good test vector. */
public static void SelfCheck()
{
uint testFrame = 0x134;
byte[] testKey = new byte[] { 0xEF, 0xCD, 0xAB, 0x89, 0x67, 0x45, 0x23, 0x12 };
bool[] goodAtoB = ByteUtil.BitsFromBytes(new byte[] { 0x53, 0x4E, 0xAA, 0x58, 0x2F, 0xE8, 0x15, 0x1A, 0xB6, 0xE1, 0x85, 0x5A, 0x72, 0x8C, 0x00 });
bool[] goodBtoA = ByteUtil.BitsFromBytes(new byte[] { 0x24, 0xFD, 0x35, 0xA3, 0x5D, 0x5F, 0xB6, 0x52, 0x6D, 0x32, 0xF9, 0x06, 0xDF, 0x1A, 0xC0 });
int i = 0;
bool failed = false;
CryptA5 a5 = new CryptA5();
a5.Key = testKey;
a5.Count = testFrame;
a5.RunAlgo();
/* Compare against the test vector. */
for (i = 0; i < 114; i++)
{
if (a5.DownlinkKey[i] != goodAtoB[i])
{
failed = true;
}
}
for (i = 0; i < 114; i++)
{
if (a5.UplinkKey[i] != goodBtoA[i])
{
failed = true;
}
}
if (failed)
{
/* Problems! The test vectors didn't compare*/
StringBuilder builder = new StringBuilder();
/* Print some debugging output. */
builder.Append("key: 0x");
for (i = 0; i < 8; i++)
{
builder.AppendFormat("{0:X02}", testKey[i]);
}
builder.Append("\r\n");
builder.AppendFormat("frame number: 0x{0:X6}\r\n", (uint)testFrame);
builder.Append("known good output:\r\n");
builder.Append(" A->B: ");
for (i = 0; i < 114; i++)
{
builder.Append(goodAtoB[i] ? 1 : 0);
}
builder.Append(" B->A: ");
for (i = 0; i < 114; i++)
{
builder.Append(goodBtoA[i] ? 1 : 0);
}
builder.Append("\r\n");
builder.Append("observed output:\r\n");
builder.Append(" A->B: ");
for (i = 0; i < 114; i++)
{
builder.Append(a5.DownlinkKey[i] ? 1 : 0);
}
builder.Append(" B->A: ");
for (i = 0; i < 114; i++)
{
builder.Append(a5.UplinkKey[i] ? 1 : 0);
}
builder.Append("\r\n");
builder.Append("\r\nI don't know why this broke; contact the authors.\r\n");
Log.AddMessage(builder.ToString());
}
}
