private void treeViewSelectVariantCoding(TreeNode node) { string domainName = node.Text; string variantName = node.Parent.Text; string ecuName = node.Parent.Parent.Text; Console.WriteLine($"Starting VC Dialog for {ecuName} ({variantName}) with domain as {domainName}"); CaesarContainer container = Containers.Find(x => x.GetECUVariantByName(variantName) != null); // prompt the user for vc changes via VCForm VCForm vcForm = new VCForm(container, ecuName, variantName, domainName, Connection); if (vcForm.ShowDialog() == DialogResult.OK) { VariantCoding.DoVariantCoding(Connection, vcForm, allowWriteVariantCodingToolStripMenuItem.Checked); } }
public static void treeViewSelectVariantCodingBackup(TreeNode node, ECUConnection connection, List <CaesarContainer> containers) { if (connection is null) { return; } Cursor.Current = Cursors.WaitCursor; string variantName = node.Parent.Text; string ecuName = node.Parent.Parent.Text; string reportDate = $"{DateTime.Now.ToShortDateString()} {DateTime.Now.ToLongTimeString()}"; StringBuilder report = new StringBuilder(); CaesarContainer container = containers.Find(x => x.GetECUVariantByName(variantName) != null); ECU ecu = container.GetECUByName(ecuName); ECUVariant variant = container.GetECUVariantByName(variantName); string containerChecksum = container.FileChecksum.ToString("X8"); string dVersion = MainForm.GetVersion(); string cVersion = CaesarContainer.GetCaesarVersionString(); string connectionData = connection is null ? "(Unavailable)" : connection.FriendlyProfileName; string ecuCbfVersion = ecu.EcuXmlVersion; report.Append($"ECU Variant: {variant.Qualifier}\r\n"); StringBuilder tableBuilder = new StringBuilder(); // back up every domain since some have overlaps foreach (VCDomain domain in variant.VCDomains) { report.Append($"\r\nCoding Service: {domain.Qualifier}\r\n"); // find the read service, then execute it as-is DiagService readService = variant.GetDiagServiceByName(domain.ReadServiceName); byte[] response = connection.SendDiagRequest(readService); // isolate the traditional vc string DiagPreparation largestPrep = VCForm.GetLargestPreparation(readService.OutputPreparations); byte[] vcValue = response.Skip(largestPrep.BitPosition / 8).Take(largestPrep.SizeInBits / 8).ToArray(); StringBuilder tableRowBuilder = new StringBuilder(); // explain the vc string's settings for (int i = 0; i < domain.VCFragments.Count; i++) { VCFragment currentFragment = domain.VCFragments[i]; VCSubfragment subfragment = currentFragment.GetSubfragmentConfiguration(vcValue); string fragmentValue = subfragment is null ? "(?)" : subfragment.NameCTFResolved; string fragmentSupplementKey = subfragment is null ? "(?)" : subfragment.SupplementKey; string tableRowBlock = $@" <tr> <td>{currentFragment.Qualifier}</td> <td>{fragmentValue}</td> <td>{fragmentSupplementKey}</td> </tr> "; tableRowBuilder.Append(tableRowBlock); } string tableBlock = $@" <hr> <h2>{domain.Qualifier}</h2> <table class=""coding-data""> <tr> <td class=""fifth"">Coding String (Hex)</td> <td class=""monospace"">{BitUtility.BytesToHex(vcValue, true)}</td> </tr> <tr> <td class=""fifth"">Raw Coding String (Hex)</td> <td class=""monospace"">{BitUtility.BytesToHex(response, true)}</td> </tr> </table> <table> <tr> <th>Fragment</th> <th>Value</th> <th>Supplement Key</th> </tr> {tableRowBuilder} </table> "; tableBuilder.Append(tableBlock); } string document = $@" <!DOCTYPE html> <html lang=""en""> <head> <meta charset=""UTF-8""> <title>{ecuName} : Backup</title> <style> body {{ padding: 10px 20% 15px 15%; font-family: sans-serif; }} .pull-right {{ float: right; }} hr {{ border-bottom: 0; opacity: 0.2; }} table {{ width: 100%; margin: 20px 0; }} #eof {{ text-transform: uppercase; font-weight: bold; opacity: 0.15; letter-spacing: 0.4em; }} .coding-data {{ opacity: 0.8; }} .monospace {{ font-family: monospace; }} .fifth {{ width: 20%; }} th {{ text-align: left; }} </style> </head> <body> <h1 class=""pull-right"">Diogenes</h1> <h1>{ecuName}</h1> <hr> <table> <tr> <td>CBF Checksum</td> <td>{containerChecksum}</td> </tr> <tr> <td>Date</td> <td>{reportDate}</td> </tr> <tr> <td>Client Version</td> <td>Diogenes: {dVersion}, Caesar: {cVersion}</td> </tr> <tr> <td>ECU CBF Version</td> <td>{ecuCbfVersion}</td> </tr> <tr> <td>ECU Variant</td> <td>{variantName}</td> </tr> <tr> <td>Connection Info</td> <td>{connectionData}</td> </tr> </table> {tableBuilder} <hr> <span id=""eof"">End of report</span> </body> </html>"; Cursor.Current = Cursors.Default; SaveFileDialog sfd = new SaveFileDialog(); sfd.Title = "Specify a location to save your new VC backup"; sfd.Filter = "HTML file (*.html)|*.html|All files (*.*)|*.*"; sfd.FileName = $"VC_{variantName}_{DateTime.Now.ToString("yyyyMMdd_HHmm")}.html"; if (sfd.ShowDialog() == DialogResult.OK) { File.WriteAllText(sfd.FileName, document.ToString()); MessageBox.Show($"Backup successfully saved to {sfd.FileName}", "Export complete"); } }
/* * test: med40 * * jg: dumping pres * jg: q: SID_RQ pos byte: 0 size bytes: 1 modecfg:323 fieldtype: IntegerType dump: 2E 00 00 00 * jg: q: RecordDataIdentifier pos byte: 1 size bytes: 2 modecfg:324 fieldtype: IntegerType dump: 01 10 00 00 * jg: q: #0 pos byte: 33 size bytes: 16 modecfg:6430 fieldtype: BitDumpType dump: * jg: q: #1 pos byte: 49 size bytes: 1 modecfg:6423 fieldtype: IntegerType dump: * jg: q: #2 pos byte: 50 size bytes: 1 modecfg:6423 fieldtype: IntegerType dump: * jg: q: #3 pos byte: 51 size bytes: 1 modecfg:6423 fieldtype: IntegerType dump: * jg: q: #4 pos byte: 52 size bytes: 1 modecfg:6423 fieldtype: IntegerType dump: * jg: q: #5 pos byte: 3 size bytes: 50 modecfg:6410 fieldtype: ExtendedBitDumpType dump: * jg: done dumping pres * */ public static void DoVariantCoding(ECUConnection connection, VCForm vcForm, bool writesEnabled) { Console.WriteLine($"Operator requesting for VC: {BitUtility.BytesToHex(vcForm.VCValue, true)}"); RunDiagForm runDiagForm = new RunDiagForm(vcForm.WriteService); // construct a write command from presentations: fill up the VC value first, fill up all available dumps, then inherit the last values (fingerprints, scn) from the read command byte[] vcParameter = vcForm.VCValue; byte[] writeCommand = vcForm.WriteService.RequestBytes; byte[] priorReadCommand = vcForm.UnfilteredReadValue; // start with a list of all values that we will have to fill List <DiagPreparation> preparationsToProcess = new List <DiagPreparation>(vcForm.WriteService.InputPreparations); // fill up vc, which pretty much always uses the ExtendedBitDumpType type DiagPreparation vcPrep = preparationsToProcess.Find(x => x.FieldType == DiagPreparation.InferredDataType.ExtendedBitDumpType); if (vcPrep is null) { MessageBox.Show("VC: Could not find the VC ExtendedBitDump prep, stopping early to save your ECU.", "VC Error", MessageBoxButtons.OK, MessageBoxIcon.Error); return; } int vcPrepSizeInBytes = vcPrep.SizeInBits / 8; int vcPrepBytePosition = vcPrep.BitPosition / 8; if (vcPrepSizeInBytes < vcParameter.Length) { MessageBox.Show("VC: VC string is longer than the parameter can fit, stopping early to save your ECU.", "VC Error", MessageBoxButtons.OK, MessageBoxIcon.Error); return; } // zero out the destination buffer for the param that we intend to write since there's a possibility that our param is shorter than the actual prep's size for (int i = vcPrepBytePosition; i < (vcPrepBytePosition + vcPrepSizeInBytes); i++) { writeCommand[i] = 0; } // copy the parameter in Array.ConstrainedCopy(vcParameter, 0, writeCommand, vcPrepBytePosition, vcParameter.Length); preparationsToProcess.Remove(vcPrep); // done with vc prep // merge prefilled constants such as the (SID_RQ, id..) List <DiagPreparation> prefilledValues = new List <DiagPreparation>(); foreach (DiagPreparation prep in preparationsToProcess) { if (prep.Dump.Length > 0) { prefilledValues.Add(prep); if (prep.FieldType == DiagPreparation.InferredDataType.IntegerType) { byte[] fixedDump = prep.Dump.Take(prep.SizeInBits / 8).Reverse().ToArray(); Array.ConstrainedCopy(vcParameter, 0, writeCommand, vcPrepBytePosition, vcParameter.Length); } else { Console.WriteLine($"Skipping prefill for {prep.Qualifier} as the data type {prep.FieldType} is unsupported."); } } } // "mark" the constants as done foreach (DiagPreparation prep in prefilledValues) { preparationsToProcess.Remove(prep); } // isolate the SCN if it exists foreach (DiagPreparation prep in preparationsToProcess) { int bytePosition = prep.BitPosition / 8; int byteLength = prep.SizeInBits / 8; // SCN is always 16-bytes if (byteLength != 16) { continue; } byte[] originalValue = new byte[byteLength]; Array.ConstrainedCopy(priorReadCommand, bytePosition, originalValue, 0, byteLength); // SCN values are ASCII numerals (between 0x30 - 0x39) bool isValidSCN = true; foreach (byte b in originalValue) { if ((b > 0x39) || (b < 0x30)) { isValidSCN = false; break; } } if (!isValidSCN) { continue; } Console.WriteLine($"Found SCN value: {Encoding.ASCII.GetString(originalValue)}"); // check if operator is using vediamo-style variant-coding, where the SCN is set to 0000000000000000 when writing VC // otherwise, we can reuse the last value as read from the ECU bool useVediamoBehaviorZeroSCN = Preferences.GetValue(Preferences.PreferenceKey.EnableSCNZero) == "true"; if (useVediamoBehaviorZeroSCN) { for (int i = 0; i < originalValue.Length; i++) { originalValue[i] = 0x30; } } Console.WriteLine($"Using {Encoding.ASCII.GetString(originalValue)} as new SCN value"); // write-back the recognized (and optionally, modified) SCN Array.ConstrainedCopy(originalValue, 0, writeCommand, bytePosition, byteLength); preparationsToProcess.Remove(prep); break; } // isolate the fingerprint if it exists // normally fingerprint is appended at the tail of the VC command List <int> tailIndices = new List <int>() { writeCommand.Length - 1, writeCommand.Length - 2, writeCommand.Length - 3, writeCommand.Length - 4 }; List <DiagPreparation> possibleFingerprintFields = new List <DiagPreparation>(); foreach (DiagPreparation prep in preparationsToProcess) { int bytePosition = prep.BitPosition / 8; int byteLength = prep.SizeInBits / 8; if ((prep.FieldType == DiagPreparation.InferredDataType.IntegerType) && (byteLength == 1) && (tailIndices.Contains(bytePosition))) { tailIndices.Remove(bytePosition); possibleFingerprintFields.Add(prep); } } if (possibleFingerprintFields.Count == 4) { // copy in the fingerprint, and "mark" the constants as done byte[] fingerprint = priorReadCommand.Skip(priorReadCommand.Length - 4).ToArray(); Console.WriteLine($"Found original fingerprint as {BitUtility.BytesToHex(fingerprint)}"); // default behavior is to clone last fingerprint, else use stored fingerprint if (Preferences.GetValue(Preferences.PreferenceKey.EnableFingerprintClone) == "false") { uint altFingerprintValue = uint.Parse(Preferences.GetValue(Preferences.PreferenceKey.FingerprintValue)); fingerprint[3] = (byte)(altFingerprintValue & 0xFF); altFingerprintValue >>= 8; fingerprint[2] = (byte)(altFingerprintValue & 0xFF); altFingerprintValue >>= 8; fingerprint[1] = (byte)(altFingerprintValue & 0xFF); altFingerprintValue >>= 8; fingerprint[0] = (byte)(altFingerprintValue & 0xFF); } Console.WriteLine($"Using {BitUtility.BytesToHex(fingerprint)} as new fingerprint value."); Array.ConstrainedCopy(fingerprint, 0, writeCommand, writeCommand.Length - 4, 4); foreach (DiagPreparation prep in possibleFingerprintFields) { preparationsToProcess.Remove(prep); } } // at this point, whatever that's left in preparationsToProcess are stuff that are variable, but should be copied verbatim from the original read request (e.g. fingerprints, scn) // log the assumptions, show it the operator just in case StringBuilder assumptionsMade = new StringBuilder(); if (preparationsToProcess.Count > 0) { if (writeCommand.Length != priorReadCommand.Length) { MessageBox.Show("There are some preparations that do not have a default value. \r\n" + "The input and output values do not have matching lengths, which means that the automatic assumption may be wrong. \r\n" + "Please be very careful when proceeding.", "Warning"); } foreach (DiagPreparation prep in preparationsToProcess) { int bytePosition = prep.BitPosition / 8; int byteLength = prep.SizeInBits / 8; Array.ConstrainedCopy(priorReadCommand, bytePosition, writeCommand, bytePosition, byteLength); assumptionsMade.Append($"{prep.Qualifier} : {BitUtility.BytesToHex(priorReadCommand.Skip(bytePosition).Take(byteLength).ToArray(), true)}\r\n"); } } /* * // lazy me dumping the values * for (int i = 0; i < vcForm.WriteService.InputPreparations.Count; i++) * { * DiagPreparation prep = vcForm.WriteService.InputPreparations[i]; * Console.WriteLine($"debug: q: {prep.Qualifier} pos byte: {(prep.BitPosition / 8)} size bytes: {(prep.SizeInBits / 8)} modecfg:{prep.ModeConfig:X} fieldtype: {prep.FieldType} dump: {BitUtility.BytesToHex(prep.Dump, true)}"); * } */ // we are done preparing the command, if we are confident we can send the command straight to the ECU, else, let the user review if (assumptionsMade.Length > 0) { if (MessageBox.Show("Some assumptions were made when preparing the write parameters. \r\n\r\n" + "You may wish to review them by selecting Cancel, or select OK to execute the write command immediately.\r\n\r\n" + assumptionsMade.ToString(), "Review assumptions", MessageBoxButtons.OKCancel, MessageBoxIcon.Information) == DialogResult.OK) { ExecVCWrite(writeCommand, vcForm.WriteService, connection, writesEnabled); } else { runDiagForm.Result = writeCommand; if (runDiagForm.ShowDialog() == DialogResult.OK) { ExecVCWrite(runDiagForm.Result, vcForm.WriteService, connection, writesEnabled); } } } else { // everything accounted for, immediately write ExecVCWrite(writeCommand, vcForm.WriteService, connection, writesEnabled); } }