public void ApplyPatches(List<PatchDefinition> patchDefinitions)
{
_appliedPatchInfos = new List<AppliedPatchInfo>(); //process this when saving the result
foreach (var patchDefinition in patchDefinitions)
{
RemovePatches(
new List<Tuple<PatchDefinition, AppliedPatchInfo>>()
{
new Tuple<PatchDefinition, AppliedPatchInfo>( patchDefinition, _appliedPatchInfos.FirstOrDefault(a => a.Name == patchDefinition.Name))
}
); //check if it has already been applied and remove beforehand
var newlyAppliedPatch = new AppliedPatchInfo(patchDefinition.Name, patchDefinition.Version);
_appliedPatchInfos.Add(newlyAppliedPatch);
foreach (var variable in patchDefinition.Variables) //TODO: remove variable
{
var targetMethod = CodeHelper.ResolveMethodDefinition(_assembly.MainModule, variable.TargetMethodName);
var targetType = TypeParser.ParseType(_assembly.MainModule, variable.Type);
if (targetType == null)
{
throw new ApplicationException(string.Format("Type {0} couldn't be resolved for variable {1}", variable.TargetMethodName, variable.Name));
}
if (targetMethod == null)
{
throw new ApplicationException(
string.Format("Method {0} couldn't be resolved for variable {1}", variable.TargetMethodName, variable.Name));
}
targetMethod.Body.Variables.Add( new VariableDefinition(variable.Name, targetType));
}
foreach (var codeBlock in patchDefinition.CodeBlocks)
{
var codeBlockInfo = new AppliedCodeBlock()
{
InsertPos = codeBlock.InsertOffset,
MethodName = codeBlock.TargetMethodName,
LinesCount = codeBlock.Lines.Count(),
OriginalLinesCount = codeBlock.TargetMethodInstructionCount
};
newlyAppliedPatch.AppliedCodeBlocks.Add(codeBlockInfo);
var typeName = codeBlock.TargetMethodName.Split(new[] { " ", "::" }, 3, StringSplitOptions.RemoveEmptyEntries)[1];
var type = _assembly.MainModule.Types.FirstOrDefault(t => t.FullName == typeName);
if (type == null)
{
throw new ApplicationException(string.Format("type {0} not found in assembly {1}", typeName, _assemblyPath));
}
var method = type.Methods.FirstOrDefault(m => m.FullName == codeBlock.TargetMethodName);
if (method == null)
{
throw new ApplicationException(string.Format("method {0} not found in assembly: {1}", codeBlock.TargetMethodName,
_assemblyPath));
}
if (codeBlock.TargetMethodInstructionCount < 0)
{
codeBlockInfo.OriginalLinesCount = method.Body.Instructions.Count;
}
//var processor = method.Body.GetILProcessor();
var insertAt = method.Body.Instructions.Select((i, idx) => new Tuple<Instruction, int>(i, idx)).FirstOrDefault(
it =>
it.Item1.Offset >= codeBlock.InsertOffset
);
var insertIdx = insertAt != null ? insertAt.Item2 : 0;
if (codeBlock.InsertOffset > 0 && insertIdx == 0)
{
Debug.WriteLine("something went wrong. ipos is:{0}", codeBlock.InsertOffset);
}
//Debug.Assert(codeBlock.InsertOffset != 163);
if (codeBlock.TargetMethodInstructionCount > 0 && codeBlock.TargetMethodInstructionCount != method.Body.Instructions.Count)
{
throw new ApplicationException(string.Format("Instruction count({0}) in the target method {1} does not match the expected count {2}",
method.Body.Instructions.Count,
codeBlock.TargetMethodName,
codeBlock.TargetMethodInstructionCount));
}
codeBlockInfo.InsertPos = insertIdx;
foreach (var code in codeBlock.Lines)
{
var i = code.Create(method.Body, _assembly.MainModule);
method.Body.Instructions.Insert(insertIdx++, i);
}
}
//UI patches
foreach (var uiPatch in patchDefinition.UIPatches) //TODO: too phat, move out
{
var uiPatcher = new UIDataLoader();
var targetPath = Path.Combine(_gameRoot, uiPatch.FilePath);
var doc = uiPatcher.FixAndLoadXml(targetPath);
var uiPatchBackupNodes = doc.XPathSelectElements(string.Format("//SotsosBackup/UIPatchBackup[@PatchName='{0}']", patchDefinition.Name));
var installed = uiPatchBackupNodes.Select(xElement => xElement.Attributes("XPath").FirstOrDefault()).Any(xpathAtt => xpathAtt.Value == uiPatch.XPath);
if (installed) //already installed, skip
{
continue;
}
var targetNode = doc.XPathSelectElement(uiPatch.XPath);
var xmlNodeReader = new XmlNodeReader(uiPatch.Data);
var newNode = XElement.Load(xmlNodeReader).Descendants().First();
var sotsosBackupNode = doc.XPathSelectElement("//SotsosBackup");
if (sotsosBackupNode == null)
{
sotsosBackupNode = new XElement("SotsosBackup");
doc.Root.DescendantNodes().Last().AddAfterSelf(sotsosBackupNode);
}
var uiPatchBackupNode = new XElement("UIPatchBackup");
uiPatchBackupNode.SetAttributeValue("XPath", uiPatch.XPath);
uiPatchBackupNode.SetAttributeValue("PatchMode", uiPatch.PatchMode);
uiPatchBackupNode.SetAttributeValue("PatchName", patchDefinition.Name);
uiPatchBackupNode.SetAttributeValue("PatchVersion", patchDefinition.Version);
sotsosBackupNode.Add(uiPatchBackupNode);
if (uiPatch.PatchMode == UIPatchMode.Replace)
{
var dataNode = new XElement("Data");
uiPatchBackupNode.Add(dataNode);
var parent = targetNode.Parent ?? doc.Root;
var prevNode = targetNode.PreviousNode;
targetNode.Remove();
dataNode.Add(targetNode);
if (prevNode != null)
{
prevNode.AddAfterSelf(newNode);
}
else
{
parent.Add(newNode); //allow the nullref to flow up
}
}
else if (uiPatch.PatchMode == UIPatchMode.InsertAfter)
{
uiPatchBackupNode.SetAttributeValue("RemoveXPath", uiPatch.RemoveXPath);
targetNode.AddAfterSelf(newNode);
}
else if (uiPatch.PatchMode == UIPatchMode.InsertBefore)
{
uiPatchBackupNode.SetAttributeValue("RemoveXPath", uiPatch.RemoveXPath);
targetNode.AddBeforeSelf(newNode);
}
using (var writer = XmlWriter.Create(targetPath, new XmlWriterSettings() { Indent = true }))
{
doc.WriteTo(writer);
}
}
}
}
public void RemovePatches(List<Tuple<PatchDefinition, AppliedPatchInfo>> toBeRemoved )
{
if (_currentActivePatchInfos != null && _currentActivePatchInfos.Count > 0)
{
foreach (var patchToBeRemoved in toBeRemoved)
{
var patchInfo = patchToBeRemoved.Item2;
//_currentActivePatchInfos.FirstOrDefault(pi => pi.Name == patchInfo);
var patchDefinition = patchToBeRemoved.Item1;
if (patchInfo != null)
{
var appliedBlocks = new List<AppliedCodeBlock>(patchInfo.AppliedCodeBlocks);
appliedBlocks.Reverse();
foreach (var cb in appliedBlocks)
{
var typeName =cb.MethodName.Split(new[] { " ", "::" }, 3, StringSplitOptions.RemoveEmptyEntries)[1];
var type = _assembly.MainModule.Types.FirstOrDefault(t => t.FullName == typeName);
var method = type.Methods.FirstOrDefault(m => m.FullName == cb.MethodName);
// method.Body.Variables.Add(new VariableDefinition("ret","System.String"));
if (method.Body.Instructions.Count() != cb.LinesCount + cb.OriginalLinesCount)
{
throw new ApplicationException(string.Format("Invalid patch state for code block {0}. Can't remove.", cb.Src));
}
var insertIdx = cb.InsertPos;
for (var p = 0; p < cb.LinesCount; p++)
{
method.Body.Instructions.RemoveAt(insertIdx); //check if it keeps the offsets intact
}
if (method.Body.Instructions.Count() != cb.OriginalLinesCount)
{
throw new ApplicationException(string.Format("Invalid patch state for code block {0}. Can't remove.", cb.Src));
}
}
_currentActivePatchInfos.Remove(patchInfo);
_assembly.CustomAttributes.Remove(patchInfo.Attr);
}
//remove ui parts
if (patchDefinition != null)
{
if (patchDefinition.Variables != null && patchDefinition.Variables.Count > 0)
{
foreach (var variable in patchDefinition.Variables)
{
var targetMethod = CodeHelper.ResolveMethodDefinition(_assembly.MainModule, variable.TargetMethodName);
var reverseVariables = new List<VariableDefinition>(targetMethod.Body.Variables);
reverseVariables.Reverse();
var findVar = reverseVariables.FirstOrDefault(v => v.VariableType.FullName == variable.Type);
if (findVar != null)
{
targetMethod.Body.Variables.Remove(findVar); //remove last variable with given type
}
}
}
foreach (var uiPatch in patchDefinition.UIPatches) //TODO: load from assembly info instead of existing patches for better maint.
{
var uiPatcher = new UIDataLoader();
var targetPath = Path.Combine(_gameRoot, uiPatch.FilePath);
var doc = uiPatcher.FixAndLoadXml(targetPath);
var sotsosBackupNodes = doc.XPathSelectElements(string.Format("//SotsosBackup/UIPatchBackup[@PatchName='{0}']", patchDefinition.Name));
if (sotsosBackupNodes.Any())
{
foreach (var backupNode in sotsosBackupNodes)
{
var patchMode = UIPatchMode.Replace;
Enum.TryParse(backupNode.Attribute("PatchMode").Value, true, out patchMode);
switch (patchMode)
{
case UIPatchMode.Replace:
{
var xpath = backupNode.Attribute("XPath").Value;
var dataNode = backupNode.Descendants("Data").FirstOrDefault();
if (dataNode != null && dataNode.Elements().Count() == 1)
{
var restoreLocation = doc.XPathSelectElement(xpath);
if (restoreLocation != null)
{
restoreLocation.AddAfterSelf(dataNode.Elements().First());
restoreLocation.Remove();
}
}
break;
}
case UIPatchMode.InsertBefore:
case UIPatchMode.InsertAfter:
{
var xpath = backupNode.Attribute("RemoveXPath").Value;
var nodeToRemove = doc.XPathSelectElement(xpath);
if (nodeToRemove != null)
{
nodeToRemove.Remove();
}
break;
}
}
backupNode.Remove();
}
}
using (var writer = XmlWriter.Create(targetPath, new XmlWriterSettings(){Indent = true}))
{
doc.WriteTo(writer);
}
}
}
}
}
}