Changed: When ryzom patch fails try to download lzma file (this last may never fail)

code/ryzom/client/src/login_patch.cpp

@@ -1354,7 +1354,7 @@ void CPatchManager::getServerFile (const std::string &name, bool bZipped, const
 		{
 			//nlwarning("EXCEPTION CATCH: getServerFile() failed - try to find an alternative: %i: %s",UsedServer,PatchServers[UsedServer].DisplayedServerPath.c_str());
 
-			nlwarning("EXCEPTION CATCH: getServerFile() failed - try to find an alternative :");
+			nlwarning("EXCEPTION CATCH: getServerFile() failed - try to find an alternative : %s", (serverPath+srcName).c_str());
 			nlwarning("%i", UsedServer);
 			if (UsedServer >= 0 && UsedServer < (int) PatchServers.size())
 			{
@@ -2676,6 +2676,7 @@ void CPatchThread::processFile (CPatchManager::SFileToPatch &rFTP)
 
 	string OutFilename;
 	bool usePatchFile = true;
+	bool haveAllreadyTryiedDownloadingOfFile = false;
 
 	// compute the total size of patch to download
 	uint32 totalPatchSize = 0;
@@ -2743,6 +2744,7 @@ void CPatchThread::processFile (CPatchManager::SFileToPatch &rFTP)
 			{
 				// can not load the 7zip file, use normal patching
 				usePatchFile = true;
+				haveAllreadyTryiedDownloadingOfFile = true;
 				break;
 			}
 
@@ -2754,6 +2756,7 @@ void CPatchThread::processFile (CPatchManager::SFileToPatch &rFTP)
 				{
 					// fallback to standard patch method
 					usePatchFile = true;
+					haveAllreadyTryiedDownloadingOfFile = true;
 					break;
 				}
 			}
@@ -2766,6 +2769,7 @@ void CPatchThread::processFile (CPatchManager::SFileToPatch &rFTP)
 				nlwarning("Failed to unpack lzma file %s", (pPM->ClientPatchPath+lzmaFile).c_str());
 				// fallback to standard patch method
 				usePatchFile = true;
+				haveAllreadyTryiedDownloadingOfFile = true;
 				break;
 			}
 
@@ -2874,8 +2878,83 @@ void CPatchThread::processFile (CPatchManager::SFileToPatch &rFTP)
 			sTranslate = CI18N::get("uiApplyingDelta") + " " + CFile::getFilename(PatchName);
 			pPM->setState(true, sTranslate);
 
-			xDeltaPatch(PatchName, SourceNameXD, OutFilename);
+			bool deltaPatchResult = xDeltaPatch(PatchName, SourceNameXD, OutFilename);
+
+			if (!deltaPatchResult && !haveAllreadyTryiedDownloadingOfFile) // Patch failed, try to download and apply lzma
+			{
+				breakable
+				{
+					// compute the seven zip filename
+					string lzmaFile = rFTP.FileName+".lzma";
+
+					// download the 7zip file
+					try
+					{
+						// first, try in the file version subfolfer
+						try
+						{
+							progress.Scale = 1.f;
+							progress.Bias = 0.f;
+							if (!rFTP.Patches.empty())
+							{
+								pPM->getServerFile(toString("%05u/", rFTP.Patches.back())+lzmaFile, false, "", &progress);
+							}
+							// else -> file comes from a previous download (with .tmp extension, and is up to date)
+							// the remaining code will just rename it with good name and exit
+						}
+						catch (const NLMISC::EWriteError &)
+						{
+							// this is a local error, rethrow ...
+							throw;
+						}
+						catch(...)
+						{
+							// failed with version subfolder, try in the root patch directory
+							pPM->getServerFile(lzmaFile, false, "", &progress);
+						}
+					}
+					catch (const NLMISC::EWriteError &)
+					{
+						// this is a local error, rethrow ...
+						throw;
+					}
+					catch (...)
+					{
+						break;
+					}
+
+					OutFilename = pPM->ClientPatchPath + NLMISC::CFile::getFilename(rFTP.FileName);
+					// try to unpack the file
+					try
+					{
+						if (!unpackLZMA(pPM->ClientPatchPath+lzmaFile, OutFilename+".tmp"))
+						{
+							break;
+						}
+					}
+					catch (const NLMISC::EWriteError&)
+					{
+						throw;
+					}
+					catch (...)
+					{
+						nlwarning("Failed to unpack lzma file %s", (pPM->ClientPatchPath+lzmaFile).c_str());
+						break;
+					}
 
+					if (rFTP.LocalFileExists)
+						pPM->deleteFile(SourceName);
+
+					pPM->deleteFile(pPM->ClientPatchPath+lzmaFile);	// delete the archive file
+					pPM->deleteFile(SourceName, false, false); // File can exists if bad BNP loading
+					if (_CommitPatch)
+					{
+						pPM->renameFile(OutFilename+".tmp", DestinationName);
+					}
+				}
+			}
+			else
+			{
 				if (rFTP.LocalFileExists)
 					pPM->deleteFile(SourceName);
 				pPM->deleteFile(PatchName);
@@ -2903,6 +2982,7 @@ void CPatchThread::processFile (CPatchManager::SFileToPatch &rFTP)
 				}
 			}
 		}
+	}
 	else
 	{
 		PatchSizeProgress += totalPatchSize;
@@ -2915,7 +2995,7 @@ void CPatchThread::processFile (CPatchManager::SFileToPatch &rFTP)
 }
 
 // ****************************************************************************
-void CPatchThread::xDeltaPatch(const string &patch, const string &src, const string &out)
+bool CPatchThread::xDeltaPatch(const string &patch, const string &src, const string &out)
 {
 	// Internal xdelta
 
@@ -2941,12 +3021,13 @@ void CPatchThread::xDeltaPatch(const string &patch, const string &src, const str
 			break;
 			default:
 			{
-				std::string str = toString("Error applying %s to %s giving %s", patch.c_str(), src.c_str(), out.c_str());
+				nlinfo("Error applying %s to %s giving %s", patch.c_str(), src.c_str(), out.c_str());
-				throw Exception (str);
+				return false;
 			}
 			break;
 		}
-	}
+	} else
+		return true;
 
 
 	// Launching xdelta

code/ryzom/client/src/login_patch.h

@@ -547,7 +547,7 @@ private:
 
 	void run();
 	void processFile (CPatchManager::SFileToPatch &rFTP);
-	void xDeltaPatch(const std::string &patch, const std::string &src, const std::string &out);
+	bool xDeltaPatch(const std::string &patch, const std::string &src, const std::string &out);
 
 };
 /**