diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/backupstore/BackupClientFileAttributes.cpp (renamed from lib/backupclient/BackupClientFileAttributes.cpp) | 0 | ||||
| -rw-r--r-- | lib/backupstore/BackupClientFileAttributes.h (renamed from lib/backupclient/BackupClientFileAttributes.h) | 0 | ||||
| -rw-r--r-- | lib/backupstore/BackupCommands.cpp | 959 | ||||
| -rw-r--r-- | lib/backupstore/BackupConstants.h | 21 | ||||
| -rw-r--r-- | lib/backupstore/BackupStoreConstants.h (renamed from lib/backupclient/BackupStoreConstants.h) | 0 | ||||
| -rw-r--r-- | lib/backupstore/BackupStoreContext.cpp | 1808 | ||||
| -rw-r--r-- | lib/backupstore/BackupStoreContext.h | 186 | ||||
| -rw-r--r-- | lib/backupstore/BackupStoreDirectory.cpp (renamed from lib/backupclient/BackupStoreDirectory.cpp) | 0 | ||||
| -rw-r--r-- | lib/backupstore/BackupStoreDirectory.h (renamed from lib/backupclient/BackupStoreDirectory.h) | 0 | ||||
| -rw-r--r-- | lib/backupstore/BackupStoreException.h (renamed from lib/backupclient/BackupStoreException.h) | 0 | ||||
| -rw-r--r-- | lib/backupstore/BackupStoreException.txt (renamed from lib/backupclient/BackupStoreException.txt) | 0 | ||||
| -rw-r--r-- | lib/backupstore/BackupStoreFile.cpp (renamed from lib/backupclient/BackupStoreFile.cpp) | 0 | ||||
| -rw-r--r-- | lib/backupstore/BackupStoreFile.h (renamed from lib/backupclient/BackupStoreFile.h) | 0 | ||||
| -rw-r--r-- | lib/backupstore/BackupStoreFileCryptVar.cpp (renamed from lib/backupclient/BackupStoreFileCryptVar.cpp) | 0 | ||||
| -rw-r--r-- | lib/backupstore/BackupStoreFileCryptVar.h (renamed from lib/backupclient/BackupStoreFileCryptVar.h) | 0 | ||||
| -rw-r--r-- | lib/backupstore/BackupStoreFileEncodeStream.cpp (renamed from lib/backupclient/BackupStoreFileEncodeStream.cpp) | 0 | ||||
| -rw-r--r-- | lib/backupstore/BackupStoreFileEncodeStream.h (renamed from lib/backupclient/BackupStoreFileEncodeStream.h) | 0 | ||||
| -rw-r--r-- | lib/backupstore/BackupStoreFileRevDiff.cpp (renamed from lib/backupclient/BackupStoreFileRevDiff.cpp) | 0 | ||||
| -rw-r--r-- | lib/backupstore/BackupStoreFileWire.h (renamed from lib/backupclient/BackupStoreFileWire.h) | 0 | ||||
| -rw-r--r-- | lib/backupstore/BackupStoreFilename.cpp (renamed from lib/backupclient/BackupStoreFilename.cpp) | 0 | ||||
| -rw-r--r-- | lib/backupstore/BackupStoreFilename.h (renamed from lib/backupclient/BackupStoreFilename.h) | 0 | ||||
| -rw-r--r-- | lib/backupstore/BackupStoreFilenameClear.cpp (renamed from lib/backupclient/BackupStoreFilenameClear.cpp) | 0 | ||||
| -rw-r--r-- | lib/backupstore/BackupStoreFilenameClear.h (renamed from lib/backupclient/BackupStoreFilenameClear.h) | 0 | ||||
| -rw-r--r-- | lib/backupstore/BackupStoreObjectMagic.h (renamed from lib/backupclient/BackupStoreObjectMagic.h) | 0 | ||||
| -rw-r--r-- | lib/backupstore/Makefile.extra (renamed from lib/backupclient/Makefile.extra) | 10 | ||||
| -rw-r--r-- | lib/backupstore/RunStatusProvider.h (renamed from lib/backupclient/RunStatusProvider.h) | 0 | ||||
| -rw-r--r-- | lib/backupstore/backupprotocol.txt | 235 |
27 files changed, 3216 insertions, 3 deletions
diff --git a/lib/backupclient/BackupClientFileAttributes.cpp b/lib/backupstore/BackupClientFileAttributes.cpp index 0d7df4d7..0d7df4d7 100644 --- a/lib/backupclient/BackupClientFileAttributes.cpp +++ b/lib/backupstore/BackupClientFileAttributes.cpp diff --git a/lib/backupclient/BackupClientFileAttributes.h b/lib/backupstore/BackupClientFileAttributes.h index f9a0d883..f9a0d883 100644 --- a/lib/backupclient/BackupClientFileAttributes.h +++ b/lib/backupstore/BackupClientFileAttributes.h diff --git a/lib/backupstore/BackupCommands.cpp b/lib/backupstore/BackupCommands.cpp new file mode 100644 index 00000000..34f813df --- /dev/null +++ b/lib/backupstore/BackupCommands.cpp @@ -0,0 +1,959 @@ +// -------------------------------------------------------------------------- +// +// File +// Name: BackupCommands.cpp +// Purpose: Implement commands for the Backup store protocol +// Created: 2003/08/20 +// +// -------------------------------------------------------------------------- + +#include "Box.h" + +#include <set> +#include <sstream> + +#include "autogen_BackupProtocolServer.h" +#include "autogen_RaidFileException.h" +#include "BackupConstants.h" +#include "BackupStoreContext.h" +#include "BackupStoreConstants.h" +#include "BackupStoreDirectory.h" +#include "BackupStoreException.h" +#include "BackupStoreFile.h" +#include "BackupStoreInfo.h" +#include "BufferedStream.h" +#include "CollectInBufferStream.h" +#include "FileStream.h" +#include "InvisibleTempFileStream.h" +#include "RaidFileController.h" +#include "StreamableMemBlock.h" + +#include "MemLeakFindOn.h" + +#define PROTOCOL_ERROR(code) \ + std::auto_ptr<ProtocolObject>(new BackupProtocolServerError( \ + BackupProtocolServerError::ErrorType, \ + BackupProtocolServerError::code)); + +#define CHECK_PHASE(phase) \ + if(rContext.GetPhase() != BackupStoreContext::phase) \ + { \ + return PROTOCOL_ERROR(Err_NotInRightProtocolPhase); \ + } + +#define CHECK_WRITEABLE_SESSION \ + if(rContext.SessionIsReadOnly()) \ + { \ + return PROTOCOL_ERROR(Err_SessionReadOnly); \ + } + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupProtocolServerVersion::DoCommand(Protocol &, BackupStoreContext &) +// Purpose: Return the current version, or an error if the requested version isn't allowed +// Created: 2003/08/20 +// +// -------------------------------------------------------------------------- +std::auto_ptr<ProtocolObject> BackupProtocolServerVersion::DoCommand(BackupProtocolServer &rProtocol, BackupStoreContext &rContext) +{ + CHECK_PHASE(Phase_Version) + + // Correct version? + if(mVersion != BACKUP_STORE_SERVER_VERSION) + { + return PROTOCOL_ERROR(Err_WrongVersion); + } + + // Mark the next phase + rContext.SetPhase(BackupStoreContext::Phase_Login); + + // Return our version + return std::auto_ptr<ProtocolObject>(new BackupProtocolServerVersion(BACKUP_STORE_SERVER_VERSION)); +} + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupProtocolServerLogin::DoCommand(Protocol &, BackupStoreContext &) +// Purpose: Return the current version, or an error if the requested version isn't allowed +// Created: 2003/08/20 +// +// -------------------------------------------------------------------------- +std::auto_ptr<ProtocolObject> BackupProtocolServerLogin::DoCommand(BackupProtocolServer &rProtocol, BackupStoreContext &rContext) +{ + CHECK_PHASE(Phase_Login) + + // Check given client ID against the ID in the certificate certificate + // and that the client actually has an account on this machine + if(mClientID != rContext.GetClientID()) + { + BOX_WARNING("Failed login from client ID " << + BOX_FORMAT_ACCOUNT(mClientID) << + ": wrong certificate for this account"); + return PROTOCOL_ERROR(Err_BadLogin); + } + + if(!rContext.GetClientHasAccount()) + { + BOX_WARNING("Failed login from client ID " << + BOX_FORMAT_ACCOUNT(mClientID) << + ": no such account on this server"); + return PROTOCOL_ERROR(Err_BadLogin); + } + + // If we need to write, check that nothing else has got a write lock + if((mFlags & Flags_ReadOnly) != Flags_ReadOnly) + { + // See if the context will get the lock + if(!rContext.AttemptToGetWriteLock()) + { + BOX_WARNING("Failed to get write lock for Client ID " << + BOX_FORMAT_ACCOUNT(mClientID)); + return PROTOCOL_ERROR(Err_CannotLockStoreForWriting); + } + + // Debug: check we got the lock + ASSERT(!rContext.SessionIsReadOnly()); + } + + // Load the store info + rContext.LoadStoreInfo(); + + // Get the last client store marker + int64_t clientStoreMarker = rContext.GetClientStoreMarker(); + + // Mark the next phase + rContext.SetPhase(BackupStoreContext::Phase_Commands); + + // Log login + BOX_NOTICE("Login from Client ID " << + BOX_FORMAT_ACCOUNT(mClientID) << + " " << + (((mFlags & Flags_ReadOnly) != Flags_ReadOnly) + ?"Read/Write":"Read-only")); + + // Get the usage info for reporting to the client + int64_t blocksUsed = 0, blocksSoftLimit = 0, blocksHardLimit = 0; + rContext.GetStoreDiscUsageInfo(blocksUsed, blocksSoftLimit, blocksHardLimit); + + // Return success + return std::auto_ptr<ProtocolObject>(new BackupProtocolServerLoginConfirmed(clientStoreMarker, blocksUsed, blocksSoftLimit, blocksHardLimit)); +} + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupProtocolServerFinished::DoCommand(Protocol &, BackupStoreContext &) +// Purpose: Marks end of conversation (Protocol framework handles this) +// Created: 2003/08/20 +// +// -------------------------------------------------------------------------- +std::auto_ptr<ProtocolObject> BackupProtocolServerFinished::DoCommand(BackupProtocolServer &rProtocol, BackupStoreContext &rContext) +{ + BOX_NOTICE("Session finished for Client ID " << + BOX_FORMAT_ACCOUNT(rContext.GetClientID())); + + // Let the context know about it + rContext.ReceivedFinishCommand(); + + // can be called in any phase + return std::auto_ptr<ProtocolObject>(new BackupProtocolServerFinished); +} + + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupProtocolServerListDirectory::DoCommand(Protocol &, BackupStoreContext &) +// Purpose: Command to list a directory +// Created: 2003/09/02 +// +// -------------------------------------------------------------------------- +std::auto_ptr<ProtocolObject> BackupProtocolServerListDirectory::DoCommand(BackupProtocolServer &rProtocol, BackupStoreContext &rContext) +{ + CHECK_PHASE(Phase_Commands) + + // Store the listing to a stream + std::auto_ptr<CollectInBufferStream> stream(new CollectInBufferStream); + + try + { + // Ask the context for a directory + const BackupStoreDirectory &rdir( + rContext.GetDirectory(mObjectID)); + rdir.WriteToStream(*stream, mFlagsMustBeSet, + mFlagsNotToBeSet, mSendAttributes, + false /* never send dependency info to the client */); + } + catch (RaidFileException &e) + { + if (e.GetSubType() == RaidFileException::RaidFileDoesntExist) + { + return PROTOCOL_ERROR(Err_DoesNotExist); + } + throw; + } + + stream->SetForReading(); + + // Get the protocol to send the stream + rProtocol.SendStreamAfterCommand(stream.release()); + + return std::auto_ptr<ProtocolObject>( + new BackupProtocolServerSuccess(mObjectID)); +} + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupProtocolServerStoreFile::DoCommand(Protocol &, BackupStoreContext &) +// Purpose: Command to store a file on the server +// Created: 2003/09/02 +// +// -------------------------------------------------------------------------- +std::auto_ptr<ProtocolObject> BackupProtocolServerStoreFile::DoCommand(BackupProtocolServer &rProtocol, BackupStoreContext &rContext) +{ + CHECK_PHASE(Phase_Commands) + CHECK_WRITEABLE_SESSION + + std::auto_ptr<ProtocolObject> hookResult = + rContext.StartCommandHook(*this); + if(hookResult.get()) + { + return hookResult; + } + + // Check that the diff from file actually exists, if it's specified + if(mDiffFromFileID != 0) + { + if(!rContext.ObjectExists(mDiffFromFileID, + BackupStoreContext::ObjectExists_File)) + { + return PROTOCOL_ERROR(Err_DiffFromFileDoesNotExist); + } + } + + // A stream follows, which contains the file + std::auto_ptr<IOStream> dirstream(rProtocol.ReceiveStream()); + + // Ask the context to store it + int64_t id = 0; + try + { + id = rContext.AddFile(*dirstream, mDirectoryObjectID, + mModificationTime, mAttributesHash, mDiffFromFileID, + mFilename, + true /* mark files with same name as old versions */); + } + catch(BackupStoreException &e) + { + if(e.GetSubType() == BackupStoreException::AddedFileDoesNotVerify) + { + return PROTOCOL_ERROR(Err_FileDoesNotVerify); + } + else if(e.GetSubType() == BackupStoreException::AddedFileExceedsStorageLimit) + { + return PROTOCOL_ERROR(Err_StorageLimitExceeded); + } + else + { + throw; + } + } + + // Tell the caller what the file was + return std::auto_ptr<ProtocolObject>(new BackupProtocolServerSuccess(id)); +} + + + + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupProtocolServerGetObject::DoCommand(Protocol &, BackupStoreContext &) +// Purpose: Command to get an arbitary object from the server +// Created: 2003/09/03 +// +// -------------------------------------------------------------------------- +std::auto_ptr<ProtocolObject> BackupProtocolServerGetObject::DoCommand(BackupProtocolServer &rProtocol, BackupStoreContext &rContext) +{ + CHECK_PHASE(Phase_Commands) + + // Check the object exists + if(!rContext.ObjectExists(mObjectID)) + { + return std::auto_ptr<ProtocolObject>(new BackupProtocolServerSuccess(NoObject)); + } + + // Open the object + std::auto_ptr<IOStream> object(rContext.OpenObject(mObjectID)); + + // Stream it to the peer + rProtocol.SendStreamAfterCommand(object.release()); + + // Tell the caller what the file was + return std::auto_ptr<ProtocolObject>(new BackupProtocolServerSuccess(mObjectID)); +} + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupProtocolServerGetFile::DoCommand(Protocol &, BackupStoreContext &) +// Purpose: Command to get an file object from the server -- may have to do a bit of +// work to get the object. +// Created: 2003/09/03 +// +// -------------------------------------------------------------------------- +std::auto_ptr<ProtocolObject> BackupProtocolServerGetFile::DoCommand(BackupProtocolServer &rProtocol, BackupStoreContext &rContext) +{ + CHECK_PHASE(Phase_Commands) + + // Check the objects exist + if(!rContext.ObjectExists(mObjectID) + || !rContext.ObjectExists(mInDirectory)) + { + return PROTOCOL_ERROR(Err_DoesNotExist); + } + + // Get the directory it's in + const BackupStoreDirectory &rdir(rContext.GetDirectory(mInDirectory)); + + // Find the object within the directory + BackupStoreDirectory::Entry *pfileEntry = rdir.FindEntryByID(mObjectID); + if(pfileEntry == 0) + { + return PROTOCOL_ERROR(Err_DoesNotExistInDirectory); + } + + // The result + std::auto_ptr<IOStream> stream; + + // Does this depend on anything? + if(pfileEntry->GetDependsNewer() != 0) + { + // File exists, but is a patch from a new version. Generate the older version. + std::vector<int64_t> patchChain; + int64_t id = mObjectID; + BackupStoreDirectory::Entry *en = 0; + do + { + patchChain.push_back(id); + en = rdir.FindEntryByID(id); + if(en == 0) + { + BOX_ERROR("Object " << + BOX_FORMAT_OBJECTID(mObjectID) << + " in dir " << + BOX_FORMAT_OBJECTID(mInDirectory) << + " for account " << + BOX_FORMAT_ACCOUNT(rContext.GetClientID()) << + " references object " << + BOX_FORMAT_OBJECTID(id) << + " which does not exist in dir"); + return PROTOCOL_ERROR(Err_PatchConsistencyError); + } + id = en->GetDependsNewer(); + } + while(en != 0 && id != 0); + + // OK! The last entry in the chain is the full file, the others are patches back from it. + // Open the last one, which is the current from file + std::auto_ptr<IOStream> from(rContext.OpenObject(patchChain[patchChain.size() - 1])); + + // Then, for each patch in the chain, do a combine + for(int p = ((int)patchChain.size()) - 2; p >= 0; --p) + { + // ID of patch + int64_t patchID = patchChain[p]; + + // Open it a couple of times + std::auto_ptr<IOStream> diff(rContext.OpenObject(patchID)); + std::auto_ptr<IOStream> diff2(rContext.OpenObject(patchID)); + + // Choose a temporary filename for the result of the combination + std::ostringstream fs; + fs << rContext.GetStoreRoot() << ".recombinetemp." << p; + std::string tempFn = + RaidFileController::DiscSetPathToFileSystemPath( + rContext.GetStoreDiscSet(), fs.str(), + p + 16); + + // Open the temporary file + std::auto_ptr<IOStream> combined; + try + { + { + // Write nastily to allow this to work with gcc 2.x + std::auto_ptr<IOStream> t( + new InvisibleTempFileStream( + tempFn.c_str(), + O_RDWR | O_CREAT | + O_EXCL | O_BINARY | + O_TRUNC)); + combined = t; + } + } + catch(...) + { + // Make sure it goes + ::unlink(tempFn.c_str()); + throw; + } + + // Do the combining + BackupStoreFile::CombineFile(*diff, *diff2, *from, *combined); + + // Move to the beginning of the combined file + combined->Seek(0, IOStream::SeekType_Absolute); + + // Then shuffle round for the next go + if (from.get()) from->Close(); + from = combined; + } + + // Now, from contains a nice file to send to the client. Reorder it + { + // Write nastily to allow this to work with gcc 2.x + std::auto_ptr<IOStream> t(BackupStoreFile::ReorderFileToStreamOrder(from.get(), true /* take ownership */)); + stream = t; + } + + // Release from file to avoid double deletion + from.release(); + } + else + { + // Simple case: file already exists on disc ready to go + + // Open the object + std::auto_ptr<IOStream> object(rContext.OpenObject(mObjectID)); + BufferedStream buf(*object); + + // Verify it + if(!BackupStoreFile::VerifyEncodedFileFormat(buf)) + { + return PROTOCOL_ERROR(Err_FileDoesNotVerify); + } + + // Reset stream -- seek to beginning + object->Seek(0, IOStream::SeekType_Absolute); + + // Reorder the stream/file into stream order + { + // Write nastily to allow this to work with gcc 2.x + std::auto_ptr<IOStream> t(BackupStoreFile::ReorderFileToStreamOrder(object.get(), true /* take ownership */)); + stream = t; + } + + // Object will be deleted when the stream is deleted, + // so can release the object auto_ptr here to avoid + // premature deletion + object.release(); + } + + // Stream the reordered stream to the peer + rProtocol.SendStreamAfterCommand(stream.get()); + + // Don't delete the stream here + stream.release(); + + // Tell the caller what the file was + return std::auto_ptr<ProtocolObject>(new BackupProtocolServerSuccess(mObjectID)); +} + + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupProtocolServerCreateDirectory::DoCommand(Protocol &, BackupStoreContext &) +// Purpose: Create directory command +// Created: 2003/09/04 +// +// -------------------------------------------------------------------------- +std::auto_ptr<ProtocolObject> BackupProtocolServerCreateDirectory::DoCommand(BackupProtocolServer &rProtocol, BackupStoreContext &rContext) +{ + CHECK_PHASE(Phase_Commands) + CHECK_WRITEABLE_SESSION + + // Get the stream containing the attributes + std::auto_ptr<IOStream> attrstream(rProtocol.ReceiveStream()); + // Collect the attributes -- do this now so no matter what the outcome, + // the data has been absorbed. + StreamableMemBlock attr; + attr.Set(*attrstream, rProtocol.GetTimeout()); + + // Check to see if the hard limit has been exceeded + if(rContext.HardLimitExceeded()) + { + // Won't allow creation if the limit has been exceeded + return PROTOCOL_ERROR(Err_StorageLimitExceeded); + } + + bool alreadyExists = false; + int64_t id = rContext.AddDirectory(mContainingDirectoryID, mDirectoryName, attr, mAttributesModTime, alreadyExists); + + if(alreadyExists) + { + return PROTOCOL_ERROR(Err_DirectoryAlreadyExists); + } + + // Tell the caller what the file was + return std::auto_ptr<ProtocolObject>(new BackupProtocolServerSuccess(id)); +} + + + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupProtocolServerChangeDirAttributes::DoCommand(Protocol &, BackupStoreContext &) +// Purpose: Change attributes on directory +// Created: 2003/09/06 +// +// -------------------------------------------------------------------------- +std::auto_ptr<ProtocolObject> BackupProtocolServerChangeDirAttributes::DoCommand(BackupProtocolServer &rProtocol, BackupStoreContext &rContext) +{ + CHECK_PHASE(Phase_Commands) + CHECK_WRITEABLE_SESSION + + // Get the stream containing the attributes + std::auto_ptr<IOStream> attrstream(rProtocol.ReceiveStream()); + // Collect the attributes -- do this now so no matter what the outcome, + // the data has been absorbed. + StreamableMemBlock attr; + attr.Set(*attrstream, rProtocol.GetTimeout()); + + // Get the context to do it's magic + rContext.ChangeDirAttributes(mObjectID, attr, mAttributesModTime); + + // Tell the caller what the file was + return std::auto_ptr<ProtocolObject>(new BackupProtocolServerSuccess(mObjectID)); +} + + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupProtocolServerSetReplacementFileAttributes::DoCommand(Protocol &, BackupStoreContext &) +// Purpose: Change attributes on directory +// Created: 2003/09/06 +// +// -------------------------------------------------------------------------- +std::auto_ptr<ProtocolObject> BackupProtocolServerSetReplacementFileAttributes::DoCommand(BackupProtocolServer &rProtocol, BackupStoreContext &rContext) +{ + CHECK_PHASE(Phase_Commands) + CHECK_WRITEABLE_SESSION + + // Get the stream containing the attributes + std::auto_ptr<IOStream> attrstream(rProtocol.ReceiveStream()); + // Collect the attributes -- do this now so no matter what the outcome, + // the data has been absorbed. + StreamableMemBlock attr; + attr.Set(*attrstream, rProtocol.GetTimeout()); + + // Get the context to do it's magic + int64_t objectID = 0; + if(!rContext.ChangeFileAttributes(mFilename, mInDirectory, attr, mAttributesHash, objectID)) + { + // Didn't exist + return PROTOCOL_ERROR(Err_DoesNotExist); + } + + // Tell the caller what the file was + return std::auto_ptr<ProtocolObject>(new BackupProtocolServerSuccess(objectID)); +} + + + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupProtocolServerDeleteFile::DoCommand(BackupProtocolServer &, BackupStoreContext &) +// Purpose: Delete a file +// Created: 2003/10/21 +// +// -------------------------------------------------------------------------- +std::auto_ptr<ProtocolObject> BackupProtocolServerDeleteFile::DoCommand(BackupProtocolServer &rProtocol, BackupStoreContext &rContext) +{ + CHECK_PHASE(Phase_Commands) + CHECK_WRITEABLE_SESSION + + // Context handles this + int64_t objectID = 0; + rContext.DeleteFile(mFilename, mInDirectory, objectID); + + // return the object ID or zero for not found + return std::auto_ptr<ProtocolObject>(new BackupProtocolServerSuccess(objectID)); +} + + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupProtocolServerUndeleteFile::DoCommand( +// BackupProtocolServer &, BackupStoreContext &) +// Purpose: Undelete a file +// Created: 2008-09-12 +// +// -------------------------------------------------------------------------- +std::auto_ptr<ProtocolObject> BackupProtocolServerUndeleteFile::DoCommand( + BackupProtocolServer &rProtocol, BackupStoreContext &rContext) +{ + CHECK_PHASE(Phase_Commands) + CHECK_WRITEABLE_SESSION + + // Context handles this + bool result = rContext.UndeleteFile(mObjectID, mInDirectory); + + // return the object ID or zero for not found + return std::auto_ptr<ProtocolObject>( + new BackupProtocolServerSuccess(result ? mObjectID : 0)); +} + + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupProtocolServerDeleteDirectory::DoCommand(BackupProtocolServer &, BackupStoreContext &) +// Purpose: Delete a directory +// Created: 2003/10/21 +// +// -------------------------------------------------------------------------- +std::auto_ptr<ProtocolObject> BackupProtocolServerDeleteDirectory::DoCommand(BackupProtocolServer &rProtocol, BackupStoreContext &rContext) +{ + CHECK_PHASE(Phase_Commands) + CHECK_WRITEABLE_SESSION + + // Check it's not asking for the root directory to be deleted + if(mObjectID == BACKUPSTORE_ROOT_DIRECTORY_ID) + { + return PROTOCOL_ERROR(Err_CannotDeleteRoot); + } + + // Context handles this + try + { + rContext.DeleteDirectory(mObjectID); + } + catch (BackupStoreException &e) + { + if(e.GetSubType() == BackupStoreException::MultiplyReferencedObject) + { + return PROTOCOL_ERROR(Err_MultiplyReferencedObject); + } + + throw; + } + + // return the object ID + return std::auto_ptr<ProtocolObject>(new BackupProtocolServerSuccess(mObjectID)); +} + + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupProtocolServerUndeleteDirectory::DoCommand(BackupProtocolServer &, BackupStoreContext &) +// Purpose: Undelete a directory +// Created: 23/11/03 +// +// -------------------------------------------------------------------------- +std::auto_ptr<ProtocolObject> BackupProtocolServerUndeleteDirectory::DoCommand(BackupProtocolServer &rProtocol, BackupStoreContext &rContext) +{ + CHECK_PHASE(Phase_Commands) + CHECK_WRITEABLE_SESSION + + // Check it's not asking for the root directory to be deleted + if(mObjectID == BACKUPSTORE_ROOT_DIRECTORY_ID) + { + return PROTOCOL_ERROR(Err_CannotDeleteRoot); + } + + // Context handles this + rContext.DeleteDirectory(mObjectID, true /* undelete */); + + // return the object ID + return std::auto_ptr<ProtocolObject>(new BackupProtocolServerSuccess(mObjectID)); +} + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupProtocolServerSetClientStoreMarker::DoCommand(BackupProtocolServer &, BackupStoreContext &) +// Purpose: Command to set the client's store marker +// Created: 2003/10/29 +// +// -------------------------------------------------------------------------- +std::auto_ptr<ProtocolObject> BackupProtocolServerSetClientStoreMarker::DoCommand(BackupProtocolServer &rProtocol, BackupStoreContext &rContext) +{ + CHECK_PHASE(Phase_Commands) + CHECK_WRITEABLE_SESSION + + // Set the marker + rContext.SetClientStoreMarker(mClientStoreMarker); + + // return store marker set + return std::auto_ptr<ProtocolObject>(new BackupProtocolServerSuccess(mClientStoreMarker)); +} + + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupProtocolServerMoveObject::DoCommand(BackupProtocolServer &, BackupStoreContext &) +// Purpose: Command to move an object from one directory to another +// Created: 2003/11/12 +// +// -------------------------------------------------------------------------- +std::auto_ptr<ProtocolObject> BackupProtocolServerMoveObject::DoCommand(BackupProtocolServer &rProtocol, BackupStoreContext &rContext) +{ + CHECK_PHASE(Phase_Commands) + CHECK_WRITEABLE_SESSION + + // Let context do this, but modify error reporting on exceptions... + try + { + rContext.MoveObject(mObjectID, mMoveFromDirectory, mMoveToDirectory, + mNewFilename, (mFlags & Flags_MoveAllWithSameName) == Flags_MoveAllWithSameName, + (mFlags & Flags_AllowMoveOverDeletedObject) == Flags_AllowMoveOverDeletedObject); + } + catch(BackupStoreException &e) + { + if(e.GetSubType() == BackupStoreException::CouldNotFindEntryInDirectory) + { + return PROTOCOL_ERROR(Err_DoesNotExist); + } + else if(e.GetSubType() == BackupStoreException::NameAlreadyExistsInDirectory) + { + return PROTOCOL_ERROR(Err_TargetNameExists); + } + else + { + throw; + } + } + + // Return the object ID + return std::auto_ptr<ProtocolObject>(new BackupProtocolServerSuccess(mObjectID)); +} + + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupProtocolServerGetObjectName::DoCommand(BackupProtocolServer &, BackupStoreContext &) +// Purpose: Command to find the name of an object +// Created: 12/11/03 +// +// -------------------------------------------------------------------------- +std::auto_ptr<ProtocolObject> BackupProtocolServerGetObjectName::DoCommand(BackupProtocolServer &rProtocol, BackupStoreContext &rContext) +{ + CHECK_PHASE(Phase_Commands) + + // Create a stream for the list of filenames + std::auto_ptr<CollectInBufferStream> stream(new CollectInBufferStream); + + // Object and directory IDs + int64_t objectID = mObjectID; + int64_t dirID = mContainingDirectoryID; + + // Data to return in the reply + int32_t numNameElements = 0; + int16_t objectFlags = 0; + int64_t modTime = 0; + uint64_t attrModHash = 0; + bool haveModTimes = false; + + do + { + // Check the directory really exists + if(!rContext.ObjectExists(dirID, BackupStoreContext::ObjectExists_Directory)) + { + return std::auto_ptr<ProtocolObject>(new BackupProtocolServerObjectName(BackupProtocolServerObjectName::NumNameElements_ObjectDoesntExist, 0, 0, 0)); + } + + // Load up the directory + const BackupStoreDirectory &rdir(rContext.GetDirectory(dirID)); + + // Find the element in this directory and store it's name + if(objectID != ObjectID_DirectoryOnly) + { + const BackupStoreDirectory::Entry *en = rdir.FindEntryByID(objectID); + + // If this can't be found, then there is a problem... tell the caller it can't be found + if(en == 0) + { + // Abort! + return std::auto_ptr<ProtocolObject>(new BackupProtocolServerObjectName(BackupProtocolServerObjectName::NumNameElements_ObjectDoesntExist, 0, 0, 0)); + } + + // Store flags? + if(objectFlags == 0) + { + objectFlags = en->GetFlags(); + } + + // Store modification times? + if(!haveModTimes) + { + modTime = en->GetModificationTime(); + attrModHash = en->GetAttributesHash(); + haveModTimes = true; + } + + // Store the name in the stream + en->GetName().WriteToStream(*stream); + + // Count of name elements + ++numNameElements; + } + + // Setup for next time round + objectID = dirID; + dirID = rdir.GetContainerID(); + + } while(objectID != 0 && objectID != BACKUPSTORE_ROOT_DIRECTORY_ID); + + // Stream to send? + if(numNameElements > 0) + { + // Get the stream ready to go + stream->SetForReading(); + // Tell the protocol to send the stream + rProtocol.SendStreamAfterCommand(stream.release()); + } + + // Make reply + return std::auto_ptr<ProtocolObject>(new BackupProtocolServerObjectName(numNameElements, modTime, attrModHash, objectFlags)); +} + + + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupProtocolServerGetBlockIndexByID::DoCommand(BackupProtocolServer &, BackupStoreContext &) +// Purpose: Get the block index from a file, by ID +// Created: 19/1/04 +// +// -------------------------------------------------------------------------- +std::auto_ptr<ProtocolObject> BackupProtocolServerGetBlockIndexByID::DoCommand(BackupProtocolServer &rProtocol, BackupStoreContext &rContext) +{ + CHECK_PHASE(Phase_Commands) + + // Open the file + std::auto_ptr<IOStream> stream(rContext.OpenObject(mObjectID)); + + // Move the file pointer to the block index + BackupStoreFile::MoveStreamPositionToBlockIndex(*stream); + + // Return the stream to the client + rProtocol.SendStreamAfterCommand(stream.release()); + + // Return the object ID + return std::auto_ptr<ProtocolObject>(new BackupProtocolServerSuccess(mObjectID)); +} + + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupProtocolServerGetBlockIndexByName::DoCommand(BackupProtocolServer &, BackupStoreContext &) +// Purpose: Get the block index from a file, by name within a directory +// Created: 19/1/04 +// +// -------------------------------------------------------------------------- +std::auto_ptr<ProtocolObject> BackupProtocolServerGetBlockIndexByName::DoCommand(BackupProtocolServer &rProtocol, BackupStoreContext &rContext) +{ + CHECK_PHASE(Phase_Commands) + + // Get the directory + const BackupStoreDirectory &dir(rContext.GetDirectory(mInDirectory)); + + // Find the latest object ID within it which has the same name + int64_t objectID = 0; + BackupStoreDirectory::Iterator i(dir); + BackupStoreDirectory::Entry *en = 0; + while((en = i.Next(BackupStoreDirectory::Entry::Flags_File)) != 0) + { + if(en->GetName() == mFilename) + { + // Store the ID, if it's a newer ID than the last one + if(en->GetObjectID() > objectID) + { + objectID = en->GetObjectID(); + } + } + } + + // Found anything? + if(objectID == 0) + { + // No... return a zero object ID + return std::auto_ptr<ProtocolObject>(new BackupProtocolServerSuccess(0)); + } + + // Open the file + std::auto_ptr<IOStream> stream(rContext.OpenObject(objectID)); + + // Move the file pointer to the block index + BackupStoreFile::MoveStreamPositionToBlockIndex(*stream); + + // Return the stream to the client + rProtocol.SendStreamAfterCommand(stream.release()); + + // Return the object ID + return std::auto_ptr<ProtocolObject>(new BackupProtocolServerSuccess(objectID)); +} + + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupProtocolServerGetAccountUsage::DoCommand(BackupProtocolServer &, BackupStoreContext &) +// Purpose: Return the amount of disc space used +// Created: 19/4/04 +// +// -------------------------------------------------------------------------- +std::auto_ptr<ProtocolObject> BackupProtocolServerGetAccountUsage::DoCommand(BackupProtocolServer &rProtocol, BackupStoreContext &rContext) +{ + CHECK_PHASE(Phase_Commands) + + // Get store info from context + const BackupStoreInfo &rinfo(rContext.GetBackupStoreInfo()); + + // Find block size + RaidFileController &rcontroller(RaidFileController::GetController()); + RaidFileDiscSet &rdiscSet(rcontroller.GetDiscSet(rinfo.GetDiscSetNumber())); + + // Return info + return std::auto_ptr<ProtocolObject>(new BackupProtocolServerAccountUsage( + rinfo.GetBlocksUsed(), + rinfo.GetBlocksInOldFiles(), + rinfo.GetBlocksInDeletedFiles(), + rinfo.GetBlocksInDirectories(), + rinfo.GetBlocksSoftLimit(), + rinfo.GetBlocksHardLimit(), + rdiscSet.GetBlockSize() + )); +} + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupProtocolServerGetIsAlive::DoCommand(BackupProtocolServer &, BackupStoreContext &) +// Purpose: Return the amount of disc space used +// Created: 19/4/04 +// +// -------------------------------------------------------------------------- +std::auto_ptr<ProtocolObject> BackupProtocolServerGetIsAlive::DoCommand(BackupProtocolServer &rProtocol, BackupStoreContext &rContext) +{ + CHECK_PHASE(Phase_Commands) + + // + // NOOP + // + return std::auto_ptr<ProtocolObject>(new BackupProtocolServerIsAlive()); +} diff --git a/lib/backupstore/BackupConstants.h b/lib/backupstore/BackupConstants.h new file mode 100644 index 00000000..19d06a15 --- /dev/null +++ b/lib/backupstore/BackupConstants.h @@ -0,0 +1,21 @@ +// -------------------------------------------------------------------------- +// +// File +// Name: BackupConstants.h +// Purpose: Constants for the backup server and client +// Created: 2003/08/20 +// +// -------------------------------------------------------------------------- + +#ifndef BACKUPCONSTANTS__H +#define BACKUPCONSTANTS__H + +// 15 minutes to timeout (milliseconds) +#define BACKUP_STORE_TIMEOUT (15*60*1000) + +// Should the store daemon convert files to Raid immediately? +#define BACKUP_STORE_CONVERT_TO_RAID_IMMEDIATELY true + +#endif // BACKUPCONSTANTS__H + + diff --git a/lib/backupclient/BackupStoreConstants.h b/lib/backupstore/BackupStoreConstants.h index 2c33fd8f..2c33fd8f 100644 --- a/lib/backupclient/BackupStoreConstants.h +++ b/lib/backupstore/BackupStoreConstants.h diff --git a/lib/backupstore/BackupStoreContext.cpp b/lib/backupstore/BackupStoreContext.cpp new file mode 100644 index 00000000..a62655d3 --- /dev/null +++ b/lib/backupstore/BackupStoreContext.cpp @@ -0,0 +1,1808 @@ +// -------------------------------------------------------------------------- +// +// File +// Name: BackupStoreContext.cpp +// Purpose: Context for backup store server +// Created: 2003/08/20 +// +// -------------------------------------------------------------------------- + +#include "Box.h" + +#include <stdio.h> + +#include "BackupConstants.h" +#include "BackupStoreContext.h" +#include "BackupStoreDirectory.h" +#include "BackupStoreException.h" +#include "BackupStoreFile.h" +#include "BackupStoreInfo.h" +#include "BackupStoreObjectMagic.h" +#include "BufferedStream.h" +#include "BufferedWriteStream.h" +#include "FileStream.h" +#include "InvisibleTempFileStream.h" +#include "RaidFileController.h" +#include "RaidFileRead.h" +#include "RaidFileWrite.h" +#include "StoreStructure.h" + +class BackupStoreDaemon; + +#include "MemLeakFindOn.h" + +// Maximum number of directories to keep in the cache +// When the cache is bigger than this, everything gets +// deleted. +#ifdef BOX_RELEASE_BUILD + #define MAX_CACHE_SIZE 32 +#else + #define MAX_CACHE_SIZE 2 +#endif + +// Allow the housekeeping process 4 seconds to release an account +#define MAX_WAIT_FOR_HOUSEKEEPING_TO_RELEASE_ACCOUNT 4 + +// Maximum amount of store info updates before it's actually saved to disc. +#define STORE_INFO_SAVE_DELAY 96 + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupStoreContext::BackupStoreContext() +// Purpose: Constructor +// Created: 2003/08/20 +// +// -------------------------------------------------------------------------- +BackupStoreContext::BackupStoreContext(int32_t ClientID, + HousekeepingInterface &rDaemon) + : mClientID(ClientID), + mrDaemon(rDaemon), + mProtocolPhase(Phase_START), + mClientHasAccount(false), + mStoreDiscSet(-1), + mReadOnly(true), + mSaveStoreInfoDelay(STORE_INFO_SAVE_DELAY), + mpTestHook(NULL) +{ +} + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupStoreContext::~BackupStoreContext() +// Purpose: Destructor +// Created: 2003/08/20 +// +// -------------------------------------------------------------------------- +BackupStoreContext::~BackupStoreContext() +{ + // Delete the objects in the cache + for(std::map<int64_t, BackupStoreDirectory*>::iterator i(mDirectoryCache.begin()); i != mDirectoryCache.end(); ++i) + { + delete (i->second); + } +} + + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupStoreContext::CleanUp() +// Purpose: Clean up after a connection +// Created: 16/12/03 +// +// -------------------------------------------------------------------------- +void BackupStoreContext::CleanUp() +{ + // Make sure the store info is saved, if it has been loaded, isn't read only and has been modified + if(mapStoreInfo.get() && !(mapStoreInfo->IsReadOnly()) && + mapStoreInfo->IsModified()) + { + mapStoreInfo->Save(); + } +} + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupStoreContext::ReceivedFinishCommand() +// Purpose: Called when the finish command is received by the protocol +// Created: 16/12/03 +// +// -------------------------------------------------------------------------- +void BackupStoreContext::ReceivedFinishCommand() +{ + if(!mReadOnly && mapStoreInfo.get()) + { + // Save the store info, not delayed + SaveStoreInfo(false); + } +} + + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupStoreContext::AttemptToGetWriteLock() +// Purpose: Attempt to get a write lock for the store, and if so, unset the read only flags +// Created: 2003/09/02 +// +// -------------------------------------------------------------------------- +bool BackupStoreContext::AttemptToGetWriteLock() +{ + // Make the filename of the write lock file + std::string writeLockFile; + StoreStructure::MakeWriteLockFilename(mStoreRoot, mStoreDiscSet, writeLockFile); + + // Request the lock + bool gotLock = mWriteLock.TryAndGetLock(writeLockFile.c_str(), 0600 /* restrictive file permissions */); + + if(!gotLock) + { + // The housekeeping process might have the thing open -- ask it to stop + char msg[256]; + int msgLen = sprintf(msg, "r%x\n", mClientID); + // Send message + mrDaemon.SendMessageToHousekeepingProcess(msg, msgLen); + + // Then try again a few times + int tries = MAX_WAIT_FOR_HOUSEKEEPING_TO_RELEASE_ACCOUNT; + do + { + ::sleep(1 /* second */); + --tries; + gotLock = mWriteLock.TryAndGetLock(writeLockFile.c_str(), 0600 /* restrictive file permissions */); + + } while(!gotLock && tries > 0); + } + + if(gotLock) + { + // Got the lock, mark as not read only + mReadOnly = false; + } + + return gotLock; +} + + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupStoreContext::LoadStoreInfo() +// Purpose: Load the store info from disc +// Created: 2003/09/03 +// +// -------------------------------------------------------------------------- +void BackupStoreContext::LoadStoreInfo() +{ + if(mapStoreInfo.get() != 0) + { + THROW_EXCEPTION(BackupStoreException, StoreInfoAlreadyLoaded) + } + + // Load it up! + std::auto_ptr<BackupStoreInfo> i(BackupStoreInfo::Load(mClientID, mStoreRoot, mStoreDiscSet, mReadOnly)); + + // Check it + if(i->GetAccountID() != mClientID) + { + THROW_EXCEPTION(BackupStoreException, StoreInfoForWrongAccount) + } + + // Keep the pointer to it + mapStoreInfo = i; + + BackupStoreAccountDatabase::Entry account(mClientID, mStoreDiscSet); + + // try to load the reference count database + try + { + mapRefCount = BackupStoreRefCountDatabase::Load(account, false); + } + catch(BoxException &e) + { + BOX_WARNING("Reference count database is missing or corrupted, " + "creating a new one, expect housekeeping to find and " + "fix problems with reference counts later."); + + BackupStoreRefCountDatabase::CreateForRegeneration(account); + mapRefCount = BackupStoreRefCountDatabase::Load(account, false); + } +} + + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupStoreContext::SaveStoreInfo(bool) +// Purpose: Potentially delayed saving of the store info +// Created: 16/12/03 +// +// -------------------------------------------------------------------------- +void BackupStoreContext::SaveStoreInfo(bool AllowDelay) +{ + if(mapStoreInfo.get() == 0) + { + THROW_EXCEPTION(BackupStoreException, StoreInfoNotLoaded) + } + if(mReadOnly) + { + THROW_EXCEPTION(BackupStoreException, ContextIsReadOnly) + } + + // Can delay saving it a little while? + if(AllowDelay) + { + --mSaveStoreInfoDelay; + if(mSaveStoreInfoDelay > 0) + { + return; + } + } + + // Want to save now + mapStoreInfo->Save(); + + // Set count for next delay + mSaveStoreInfoDelay = STORE_INFO_SAVE_DELAY; +} + + + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupStoreContext::MakeObjectFilename(int64_t, std::string &, bool) +// Purpose: Create the filename of an object in the store, optionally creating the +// containing directory if it doesn't already exist. +// Created: 2003/09/02 +// +// -------------------------------------------------------------------------- +void BackupStoreContext::MakeObjectFilename(int64_t ObjectID, std::string &rOutput, bool EnsureDirectoryExists) +{ + // Delegate to utility function + StoreStructure::MakeObjectFilename(ObjectID, mStoreRoot, mStoreDiscSet, rOutput, EnsureDirectoryExists); +} + + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupStoreContext::GetDirectoryInternal(int64_t) +// Purpose: Return a reference to a directory. Valid only until the +// next time a function which affects directories is called. +// Mainly this funciton, and creation of files. +// Private version of this, which returns non-const directories. +// Created: 2003/09/02 +// +// -------------------------------------------------------------------------- +BackupStoreDirectory &BackupStoreContext::GetDirectoryInternal(int64_t ObjectID) +{ + // Get the filename + std::string filename; + MakeObjectFilename(ObjectID, filename); + + // Already in cache? + std::map<int64_t, BackupStoreDirectory*>::iterator item(mDirectoryCache.find(ObjectID)); + if(item != mDirectoryCache.end()) + { + // Check the revision ID of the file -- does it need refreshing? + int64_t revID = 0; + if(!RaidFileRead::FileExists(mStoreDiscSet, filename, &revID)) + { + THROW_EXCEPTION(BackupStoreException, DirectoryHasBeenDeleted) + } + + if(revID == item->second->GetRevisionID()) + { + // Looks good... return the cached object + BOX_TRACE("Returning object " << + BOX_FORMAT_OBJECTID(ObjectID) << + " from cache, modtime = " << revID); + return *(item->second); + } + + BOX_TRACE("Refreshing object " << + BOX_FORMAT_OBJECTID(ObjectID) << + " in cache, modtime changed from " << + item->second->GetRevisionID() << " to " << revID); + + // Delete this cached object + delete item->second; + mDirectoryCache.erase(item); + } + + // Need to load it up + + // First check to see if the cache is too big + if(mDirectoryCache.size() > MAX_CACHE_SIZE) + { + // Very simple. Just delete everything! + for(std::map<int64_t, BackupStoreDirectory*>::iterator i(mDirectoryCache.begin()); i != mDirectoryCache.end(); ++i) + { + delete (i->second); + } + mDirectoryCache.clear(); + } + + // Get a RaidFileRead to read it + int64_t revID = 0; + std::auto_ptr<RaidFileRead> objectFile(RaidFileRead::Open(mStoreDiscSet, filename, &revID)); + ASSERT(revID != 0); + + // New directory object + std::auto_ptr<BackupStoreDirectory> dir(new BackupStoreDirectory); + + // Read it from the stream, then set it's revision ID + BufferedStream buf(*objectFile); + dir->ReadFromStream(buf, IOStream::TimeOutInfinite); + dir->SetRevisionID(revID); + + // Make sure the size of the directory is available for writing the dir back + int64_t dirSize = objectFile->GetDiscUsageInBlocks(); + ASSERT(dirSize > 0); + dir->SetUserInfo1_SizeInBlocks(dirSize); + + // Store in cache + BackupStoreDirectory *pdir = dir.release(); + try + { + mDirectoryCache[ObjectID] = pdir; + } + catch(...) + { + delete pdir; + throw; + } + + // Return it + return *pdir; +} + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupStoreContext::AllocateObjectID() +// Purpose: Allocate a new object ID, tolerant of failures to save store info +// Created: 16/12/03 +// +// -------------------------------------------------------------------------- +int64_t BackupStoreContext::AllocateObjectID() +{ + if(mapStoreInfo.get() == 0) + { + THROW_EXCEPTION(BackupStoreException, StoreInfoNotLoaded) + } + + // Given that the store info may not be saved for STORE_INFO_SAVE_DELAY + // times after it has been updated, this is a reasonable number of times + // to try for finding an unused ID. + // (Sizes used in the store info are fixed by the housekeeping process) + int retryLimit = (STORE_INFO_SAVE_DELAY * 2); + + while(retryLimit > 0) + { + // Attempt to allocate an ID from the store + int64_t id = mapStoreInfo->AllocateObjectID(); + + // Generate filename + std::string filename; + MakeObjectFilename(id, filename); + // Check it doesn't exist + if(!RaidFileRead::FileExists(mStoreDiscSet, filename)) + { + // Success! + return id; + } + + // Decrement retry count, and try again + --retryLimit; + + // Mark that the store info should be saved as soon as possible + mSaveStoreInfoDelay = 0; + + BOX_WARNING("When allocating object ID, found that " << + BOX_FORMAT_OBJECTID(id) << " is already in use"); + } + + THROW_EXCEPTION(BackupStoreException, CouldNotFindUnusedIDDuringAllocation) +} + + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupStoreContext::AddFile(IOStream &, int64_t, +// int64_t, int64_t, const BackupStoreFilename &, bool) +// Purpose: Add a file to the store, from a given stream, into +// a specified directory. Returns object ID of the new +// file. +// Created: 2003/09/03 +// +// -------------------------------------------------------------------------- +int64_t BackupStoreContext::AddFile(IOStream &rFile, int64_t InDirectory, + int64_t ModificationTime, int64_t AttributesHash, + int64_t DiffFromFileID, const BackupStoreFilename &rFilename, + bool MarkFileWithSameNameAsOldVersions) +{ + if(mapStoreInfo.get() == 0) + { + THROW_EXCEPTION(BackupStoreException, StoreInfoNotLoaded) + } + if(mReadOnly) + { + THROW_EXCEPTION(BackupStoreException, ContextIsReadOnly) + } + + // This is going to be a bit complex to make sure it copes OK + // with things going wrong. + // The only thing which isn't safe is incrementing the object ID + // and keeping the blocks used entirely accurate -- but these + // aren't big problems if they go horribly wrong. The sizes will + // be corrected the next time the account has a housekeeping run, + // and the object ID allocation code is tolerant of missed IDs. + // (the info is written lazily, so these are necessary) + + // Get the directory we want to modify + BackupStoreDirectory &dir(GetDirectoryInternal(InDirectory)); + + // Allocate the next ID + int64_t id = AllocateObjectID(); + + // Stream the file to disc + std::string fn; + MakeObjectFilename(id, fn, true /* make sure the directory it's in exists */); + int64_t newObjectBlocksUsed = 0; + RaidFileWrite *ppreviousVerStoreFile = 0; + bool reversedDiffIsCompletelyDifferent = false; + int64_t oldVersionNewBlocksUsed = 0; + try + { + RaidFileWrite storeFile(mStoreDiscSet, fn); + storeFile.Open(false /* no overwriting */); + + // size adjustment from use of patch in old file + int64_t spaceSavedByConversionToPatch = 0; + + // Diff or full file? + if(DiffFromFileID == 0) + { + // A full file, just store to disc + if(!rFile.CopyStreamTo(storeFile, BACKUP_STORE_TIMEOUT)) + { + THROW_EXCEPTION(BackupStoreException, ReadFileFromStreamTimedOut) + } + } + else + { + // Check that the diffed from ID actually exists in the directory + if(dir.FindEntryByID(DiffFromFileID) == 0) + { + THROW_EXCEPTION(BackupStoreException, DiffFromIDNotFoundInDirectory) + } + + // Diff file, needs to be recreated. + // Choose a temporary filename. + std::string tempFn(RaidFileController::DiscSetPathToFileSystemPath(mStoreDiscSet, fn + ".difftemp", + 1 /* NOT the same disc as the write file, to avoid using lots of space on the same disc unnecessarily */)); + + try + { + // Open it twice +#ifdef WIN32 + InvisibleTempFileStream diff(tempFn.c_str(), + O_RDWR | O_CREAT | O_BINARY); + InvisibleTempFileStream diff2(tempFn.c_str(), + O_RDWR | O_BINARY); +#else + FileStream diff(tempFn.c_str(), O_RDWR | O_CREAT | O_EXCL); + FileStream diff2(tempFn.c_str(), O_RDONLY); + + // Unlink it immediately, so it definitely goes away + if(::unlink(tempFn.c_str()) != 0) + { + THROW_EXCEPTION(CommonException, OSFileError); + } +#endif + + // Stream the incoming diff to this temporary file + if(!rFile.CopyStreamTo(diff, BACKUP_STORE_TIMEOUT)) + { + THROW_EXCEPTION(BackupStoreException, ReadFileFromStreamTimedOut) + } + + // Verify the diff + diff.Seek(0, IOStream::SeekType_Absolute); + if(!BackupStoreFile::VerifyEncodedFileFormat(diff)) + { + THROW_EXCEPTION(BackupStoreException, AddedFileDoesNotVerify) + } + + // Seek to beginning of diff file + diff.Seek(0, IOStream::SeekType_Absolute); + + // Filename of the old version + std::string oldVersionFilename; + MakeObjectFilename(DiffFromFileID, oldVersionFilename, false /* no need to make sure the directory it's in exists */); + + // Reassemble that diff -- open previous file, and combine the patch and file + std::auto_ptr<RaidFileRead> from(RaidFileRead::Open(mStoreDiscSet, oldVersionFilename)); + BackupStoreFile::CombineFile(diff, diff2, *from, storeFile); + + // Then... reverse the patch back (open the from file again, and create a write file to overwrite it) + std::auto_ptr<RaidFileRead> from2(RaidFileRead::Open(mStoreDiscSet, oldVersionFilename)); + ppreviousVerStoreFile = new RaidFileWrite(mStoreDiscSet, oldVersionFilename); + ppreviousVerStoreFile->Open(true /* allow overwriting */); + from->Seek(0, IOStream::SeekType_Absolute); + diff.Seek(0, IOStream::SeekType_Absolute); + BackupStoreFile::ReverseDiffFile(diff, *from, *from2, *ppreviousVerStoreFile, + DiffFromFileID, &reversedDiffIsCompletelyDifferent); + + // Store disc space used + oldVersionNewBlocksUsed = ppreviousVerStoreFile->GetDiscUsageInBlocks(); + + // And make a space adjustment for the size calculation + spaceSavedByConversionToPatch = + from->GetDiscUsageInBlocks() - + oldVersionNewBlocksUsed; + + // Everything cleans up here... + } + catch(...) + { + // Be very paranoid about deleting this temp file -- we could only leave a zero byte file anyway + ::unlink(tempFn.c_str()); + throw; + } + } + + // Get the blocks used + newObjectBlocksUsed = storeFile.GetDiscUsageInBlocks(); + + // Exceeds the hard limit? + int64_t newBlocksUsed = mapStoreInfo->GetBlocksUsed() + + newObjectBlocksUsed - spaceSavedByConversionToPatch; + if(newBlocksUsed > mapStoreInfo->GetBlocksHardLimit()) + { + THROW_EXCEPTION(BackupStoreException, AddedFileExceedsStorageLimit) + // The store file will be deleted automatically by the RaidFile object + } + + // Commit the file + storeFile.Commit(BACKUP_STORE_CONVERT_TO_RAID_IMMEDIATELY); + } + catch(...) + { + // Delete any previous version store file + if(ppreviousVerStoreFile != 0) + { + delete ppreviousVerStoreFile; + ppreviousVerStoreFile = 0; + } + + throw; + } + + // Verify the file -- only necessary for non-diffed versions + // NOTE: No need to catch exceptions and delete ppreviousVerStoreFile, because + // in the non-diffed code path it's never allocated. + if(DiffFromFileID == 0) + { + std::auto_ptr<RaidFileRead> checkFile(RaidFileRead::Open(mStoreDiscSet, fn)); + if(!BackupStoreFile::VerifyEncodedFileFormat(*checkFile)) + { + // Error! Delete the file + RaidFileWrite del(mStoreDiscSet, fn); + del.Delete(); + + // Exception + THROW_EXCEPTION(BackupStoreException, AddedFileDoesNotVerify) + } + } + + // Modify the directory -- first make all files with the same name + // marked as an old version + int64_t blocksInOldFiles = 0; + try + { + if(MarkFileWithSameNameAsOldVersions) + { + BackupStoreDirectory::Iterator i(dir); + + BackupStoreDirectory::Entry *e = 0; + while((e = i.Next()) != 0) + { + // First, check it's not an old version (cheaper comparison) + if(! e->IsOld()) + { + // Compare name + if(e->GetName() == rFilename) + { + // Check that it's definately not an old version + ASSERT((e->GetFlags() & BackupStoreDirectory::Entry::Flags_OldVersion) == 0); + // Set old version flag + e->AddFlags(BackupStoreDirectory::Entry::Flags_OldVersion); + // Can safely do this, because we know we won't be here if it's already + // an old version + blocksInOldFiles += e->GetSizeInBlocks(); + } + } + } + } + + // Then the new entry + BackupStoreDirectory::Entry *pnewEntry = dir.AddEntry(rFilename, + ModificationTime, id, newObjectBlocksUsed, + BackupStoreDirectory::Entry::Flags_File, + AttributesHash); + + // Adjust for the patch back stuff? + if(DiffFromFileID != 0) + { + // Get old version entry + BackupStoreDirectory::Entry *poldEntry = dir.FindEntryByID(DiffFromFileID); + ASSERT(poldEntry != 0); + + // Adjust dependency info of file? + if(!reversedDiffIsCompletelyDifferent) + { + poldEntry->SetDependsNewer(id); + pnewEntry->SetDependsOlder(DiffFromFileID); + } + + // Adjust size of old entry + int64_t oldSize = poldEntry->GetSizeInBlocks(); + poldEntry->SetSizeInBlocks(oldVersionNewBlocksUsed); + + // And adjust blocks used count, for later adjustment + newObjectBlocksUsed += (oldVersionNewBlocksUsed - oldSize); + blocksInOldFiles += (oldVersionNewBlocksUsed - oldSize); + } + + // Write the directory back to disc + SaveDirectory(dir, InDirectory); + + // Commit the old version's new patched version, now that the directory safely reflects + // the state of the files on disc. + if(ppreviousVerStoreFile != 0) + { + ppreviousVerStoreFile->Commit(BACKUP_STORE_CONVERT_TO_RAID_IMMEDIATELY); + delete ppreviousVerStoreFile; + ppreviousVerStoreFile = 0; + } + } + catch(...) + { + // Back out on adding that file + RaidFileWrite del(mStoreDiscSet, fn); + del.Delete(); + + // Remove this entry from the cache + RemoveDirectoryFromCache(InDirectory); + + // Delete any previous version store file + if(ppreviousVerStoreFile != 0) + { + delete ppreviousVerStoreFile; + ppreviousVerStoreFile = 0; + } + + // Don't worry about the incremented number in the store info + throw; + } + + // Check logic + ASSERT(ppreviousVerStoreFile == 0); + + // Modify the store info + + if(DiffFromFileID == 0) + { + mapStoreInfo->AdjustNumFiles(1); + } + else + { + mapStoreInfo->AdjustNumOldFiles(1); + } + + mapStoreInfo->ChangeBlocksUsed(newObjectBlocksUsed); + mapStoreInfo->ChangeBlocksInCurrentFiles(newObjectBlocksUsed - + blocksInOldFiles); + mapStoreInfo->ChangeBlocksInOldFiles(blocksInOldFiles); + + // Increment reference count on the new directory to one + mapRefCount->AddReference(id); + + // Save the store info -- can cope if this exceptions because infomation + // will be rebuilt by housekeeping, and ID allocation can recover. + SaveStoreInfo(false); + + // Return the ID to the caller + return id; +} + + + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupStoreContext::DeleteFile(const BackupStoreFilename &, int64_t, int64_t &) +// Purpose: Deletes a file, returning true if the file existed. Object ID returned too, set to zero if not found. +// Created: 2003/10/21 +// +// -------------------------------------------------------------------------- +bool BackupStoreContext::DeleteFile(const BackupStoreFilename &rFilename, int64_t InDirectory, int64_t &rObjectIDOut) +{ + // Essential checks! + if(mapStoreInfo.get() == 0) + { + THROW_EXCEPTION(BackupStoreException, StoreInfoNotLoaded) + } + + if(mReadOnly) + { + THROW_EXCEPTION(BackupStoreException, ContextIsReadOnly) + } + + // Find the directory the file is in (will exception if it fails) + BackupStoreDirectory &dir(GetDirectoryInternal(InDirectory)); + + // Setup flags + bool fileExisted = false; + bool madeChanges = false; + rObjectIDOut = 0; // not found + + // Count of deleted blocks + int64_t blocksDel = 0; + + try + { + // Iterate through directory, only looking at files which haven't been deleted + BackupStoreDirectory::Iterator i(dir); + BackupStoreDirectory::Entry *e = 0; + while((e = i.Next(BackupStoreDirectory::Entry::Flags_File, + BackupStoreDirectory::Entry::Flags_Deleted)) != 0) + { + // Compare name + if(e->GetName() == rFilename) + { + // Check that it's definately not already deleted + ASSERT((e->GetFlags() & BackupStoreDirectory::Entry::Flags_Deleted) == 0); + // Set deleted flag + e->AddFlags(BackupStoreDirectory::Entry::Flags_Deleted); + // Mark as made a change + madeChanges = true; + // Can safely do this, because we know we won't be here if it's already + // an old version + blocksDel += e->GetSizeInBlocks(); + // Is this the last version? + if((e->GetFlags() & BackupStoreDirectory::Entry::Flags_OldVersion) == 0) + { + // Yes. It's been found. + rObjectIDOut = e->GetObjectID(); + fileExisted = true; + } + } + } + + // Save changes? + if(madeChanges) + { + // Save the directory back + SaveDirectory(dir, InDirectory); + + // Modify the store info, and write + // It definitely wasn't an old or deleted version + mapStoreInfo->AdjustNumFiles(-1); + mapStoreInfo->AdjustNumDeletedFiles(1); + mapStoreInfo->ChangeBlocksInDeletedFiles(blocksDel); + + SaveStoreInfo(false); + } + } + catch(...) + { + RemoveDirectoryFromCache(InDirectory); + throw; + } + + return fileExisted; +} + + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupStoreContext::UndeleteFile(int64_t, int64_t) +// Purpose: Undeletes a file, if it exists, returning true if +// the file existed. +// Created: 2003/10/21 +// +// -------------------------------------------------------------------------- +bool BackupStoreContext::UndeleteFile(int64_t ObjectID, int64_t InDirectory) +{ + // Essential checks! + if(mapStoreInfo.get() == 0) + { + THROW_EXCEPTION(BackupStoreException, StoreInfoNotLoaded) + } + + if(mReadOnly) + { + THROW_EXCEPTION(BackupStoreException, ContextIsReadOnly) + } + + // Find the directory the file is in (will exception if it fails) + BackupStoreDirectory &dir(GetDirectoryInternal(InDirectory)); + + // Setup flags + bool fileExisted = false; + bool madeChanges = false; + + // Count of deleted blocks + int64_t blocksDel = 0; + + try + { + // Iterate through directory, only looking at files which have been deleted + BackupStoreDirectory::Iterator i(dir); + BackupStoreDirectory::Entry *e = 0; + while((e = i.Next(BackupStoreDirectory::Entry::Flags_File | + BackupStoreDirectory::Entry::Flags_Deleted, 0)) != 0) + { + // Compare name + if(e->GetObjectID() == ObjectID) + { + // Check that it's definitely already deleted + ASSERT((e->GetFlags() & BackupStoreDirectory::Entry::Flags_Deleted) != 0); + // Clear deleted flag + e->RemoveFlags(BackupStoreDirectory::Entry::Flags_Deleted); + // Mark as made a change + madeChanges = true; + blocksDel -= e->GetSizeInBlocks(); + + // Is this the last version? + if((e->GetFlags() & BackupStoreDirectory::Entry::Flags_OldVersion) == 0) + { + // Yes. It's been found. + fileExisted = true; + } + } + } + + // Save changes? + if(madeChanges) + { + // Save the directory back + SaveDirectory(dir, InDirectory); + + // Modify the store info, and write + mapStoreInfo->ChangeBlocksInDeletedFiles(blocksDel); + + // Maybe postponed save of store info + SaveStoreInfo(); + } + } + catch(...) + { + RemoveDirectoryFromCache(InDirectory); + throw; + } + + return fileExisted; +} + + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupStoreContext::RemoveDirectoryFromCache(int64_t) +// Purpose: Remove directory from cache +// Created: 2003/09/04 +// +// -------------------------------------------------------------------------- +void BackupStoreContext::RemoveDirectoryFromCache(int64_t ObjectID) +{ + std::map<int64_t, BackupStoreDirectory*>::iterator item(mDirectoryCache.find(ObjectID)); + if(item != mDirectoryCache.end()) + { + // Delete this cached object + delete item->second; + // Erase the entry form the map + mDirectoryCache.erase(item); + } +} + + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupStoreContext::SaveDirectory(BackupStoreDirectory &, int64_t) +// Purpose: Save directory back to disc, update time in cache +// Created: 2003/09/04 +// +// -------------------------------------------------------------------------- +void BackupStoreContext::SaveDirectory(BackupStoreDirectory &rDir, int64_t ObjectID) +{ + if(mapStoreInfo.get() == 0) + { + THROW_EXCEPTION(BackupStoreException, StoreInfoNotLoaded) + } + if(rDir.GetObjectID() != ObjectID) + { + THROW_EXCEPTION(BackupStoreException, Internal) + } + + try + { + // Write to disc, adjust size in store info + std::string dirfn; + MakeObjectFilename(ObjectID, dirfn); + { + RaidFileWrite writeDir(mStoreDiscSet, dirfn); + writeDir.Open(true /* allow overwriting */); + + BufferedWriteStream buffer(writeDir); + rDir.WriteToStream(buffer); + buffer.Flush(); + + // get the disc usage (must do this before commiting it) + int64_t dirSize = writeDir.GetDiscUsageInBlocks(); + + // Commit directory + writeDir.Commit(BACKUP_STORE_CONVERT_TO_RAID_IMMEDIATELY); + + // Make sure the size of the directory is available for writing the dir back + ASSERT(dirSize > 0); + int64_t sizeAdjustment = dirSize - rDir.GetUserInfo1_SizeInBlocks(); + mapStoreInfo->ChangeBlocksUsed(sizeAdjustment); + mapStoreInfo->ChangeBlocksInDirectories(sizeAdjustment); + // Update size stored in directory + rDir.SetUserInfo1_SizeInBlocks(dirSize); + } + // Refresh revision ID in cache + { + int64_t revid = 0; + if(!RaidFileRead::FileExists(mStoreDiscSet, dirfn, &revid)) + { + THROW_EXCEPTION(BackupStoreException, Internal) + } + rDir.SetRevisionID(revid); + } + } + catch(...) + { + // Remove it from the cache if anything went wrong + RemoveDirectoryFromCache(ObjectID); + throw; + } +} + + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupStoreContext::AddDirectory(int64_t, +// const BackupStoreFilename &, bool &) +// Purpose: Creates a directory (or just returns the ID of an +// existing one). rAlreadyExists set appropraitely. +// Created: 2003/09/04 +// +// -------------------------------------------------------------------------- +int64_t BackupStoreContext::AddDirectory(int64_t InDirectory, const BackupStoreFilename &rFilename, const StreamableMemBlock &Attributes, int64_t AttributesModTime, bool &rAlreadyExists) +{ + if(mapStoreInfo.get() == 0) + { + THROW_EXCEPTION(BackupStoreException, StoreInfoNotLoaded) + } + if(mReadOnly) + { + THROW_EXCEPTION(BackupStoreException, ContextIsReadOnly) + } + + // Flags as not already existing + rAlreadyExists = false; + + // Get the directory we want to modify + BackupStoreDirectory &dir(GetDirectoryInternal(InDirectory)); + + // Scan the directory for the name (only looking for directories which already exist) + { + BackupStoreDirectory::Iterator i(dir); + BackupStoreDirectory::Entry *en = 0; + while((en = i.Next(BackupStoreDirectory::Entry::Flags_INCLUDE_EVERYTHING, + BackupStoreDirectory::Entry::Flags_Deleted | BackupStoreDirectory::Entry::Flags_OldVersion)) != 0) // Ignore deleted and old directories + { + if(en->GetName() == rFilename) + { + // Already exists + rAlreadyExists = true; + return en->GetObjectID(); + } + } + } + + // Allocate the next ID + int64_t id = AllocateObjectID(); + + // Create an empty directory with the given attributes on disc + std::string fn; + MakeObjectFilename(id, fn, true /* make sure the directory it's in exists */); + { + BackupStoreDirectory emptyDir(id, InDirectory); + // add the atttribues + emptyDir.SetAttributes(Attributes, AttributesModTime); + + // Write... + RaidFileWrite dirFile(mStoreDiscSet, fn); + dirFile.Open(false /* no overwriting */); + emptyDir.WriteToStream(dirFile); + // Get disc usage, before it's commited + int64_t dirSize = dirFile.GetDiscUsageInBlocks(); + // Commit the file + dirFile.Commit(BACKUP_STORE_CONVERT_TO_RAID_IMMEDIATELY); + + // Make sure the size of the directory is added to the usage counts in the info + ASSERT(dirSize > 0); + mapStoreInfo->ChangeBlocksUsed(dirSize); + mapStoreInfo->ChangeBlocksInDirectories(dirSize); + // Not added to cache, so don't set the size in the directory + } + + // Then add it into the parent directory + try + { + dir.AddEntry(rFilename, 0 /* modification time */, id, 0 /* blocks used */, BackupStoreDirectory::Entry::Flags_Dir, 0 /* attributes mod time */); + SaveDirectory(dir, InDirectory); + + // Increment reference count on the new directory to one + mapRefCount->AddReference(id); + } + catch(...) + { + // Back out on adding that directory + RaidFileWrite del(mStoreDiscSet, fn); + del.Delete(); + + // Remove this entry from the cache + RemoveDirectoryFromCache(InDirectory); + + // Don't worry about the incremented number in the store info + throw; + } + + // Save the store info (may not be postponed) + mapStoreInfo->AdjustNumDirectories(1); + SaveStoreInfo(false); + + // tell caller what the ID was + return id; +} + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupStoreContext::DeleteFile(const BackupStoreFilename &, int64_t, int64_t &, bool) +// Purpose: Recusively deletes a directory (or undeletes if Undelete = true) +// Created: 2003/10/21 +// +// -------------------------------------------------------------------------- +void BackupStoreContext::DeleteDirectory(int64_t ObjectID, bool Undelete) +{ + // Essential checks! + if(mapStoreInfo.get() == 0) + { + THROW_EXCEPTION(BackupStoreException, StoreInfoNotLoaded) + } + if(mReadOnly) + { + THROW_EXCEPTION(BackupStoreException, ContextIsReadOnly) + } + + // Containing directory + int64_t InDirectory = 0; + + // Count of blocks deleted + int64_t blocksDeleted = 0; + + try + { + // Get the directory that's to be deleted + { + // In block, because dir may not be valid after the delete directory call + BackupStoreDirectory &dir(GetDirectoryInternal(ObjectID)); + + // Store the directory it's in for later + InDirectory = dir.GetContainerID(); + + // Depth first delete of contents + DeleteDirectoryRecurse(ObjectID, blocksDeleted, Undelete); + } + + // Remove the entry from the directory it's in + ASSERT(InDirectory != 0); + BackupStoreDirectory &parentDir(GetDirectoryInternal(InDirectory)); + + BackupStoreDirectory::Iterator i(parentDir); + BackupStoreDirectory::Entry *en = 0; + while((en = i.Next(Undelete?(BackupStoreDirectory::Entry::Flags_Deleted):(BackupStoreDirectory::Entry::Flags_INCLUDE_EVERYTHING), + Undelete?(0):(BackupStoreDirectory::Entry::Flags_Deleted))) != 0) // Ignore deleted directories (or not deleted if Undelete) + { + if(en->GetObjectID() == ObjectID) + { + // This is the one to delete + if(Undelete) + { + en->RemoveFlags(BackupStoreDirectory::Entry::Flags_Deleted); + } + else + { + en->AddFlags(BackupStoreDirectory::Entry::Flags_Deleted); + } + + // Save it + SaveDirectory(parentDir, InDirectory); + + // Done + break; + } + } + + // Update blocks deleted count + mapStoreInfo->ChangeBlocksInDeletedFiles(Undelete?(0 - blocksDeleted):(blocksDeleted)); + mapStoreInfo->AdjustNumDirectories(-1); + SaveStoreInfo(false); + } + catch(...) + { + RemoveDirectoryFromCache(InDirectory); + throw; + } +} + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupStoreContext::DeleteDirectoryRecurse(BackupStoreDirectory &, int64_t) +// Purpose: Private. Deletes a directory depth-first recusively. +// Created: 2003/10/21 +// +// -------------------------------------------------------------------------- +void BackupStoreContext::DeleteDirectoryRecurse(int64_t ObjectID, int64_t &rBlocksDeletedOut, bool Undelete) +{ + try + { + // Does things carefully to avoid using a directory in the cache after recursive call + // because it may have been deleted. + + // Do sub directories + { + // Get the directory... + BackupStoreDirectory &dir(GetDirectoryInternal(ObjectID)); + + // Then scan it for directories + std::vector<int64_t> subDirs; + BackupStoreDirectory::Iterator i(dir); + BackupStoreDirectory::Entry *en = 0; + if(Undelete) + { + while((en = i.Next(BackupStoreDirectory::Entry::Flags_Dir | BackupStoreDirectory::Entry::Flags_Deleted, // deleted dirs + BackupStoreDirectory::Entry::Flags_EXCLUDE_NOTHING)) != 0) + { + // Store the directory ID. + subDirs.push_back(en->GetObjectID()); + } + } + else + { + while((en = i.Next(BackupStoreDirectory::Entry::Flags_Dir, // dirs only + BackupStoreDirectory::Entry::Flags_Deleted)) != 0) // but not deleted ones + { + // Store the directory ID. + subDirs.push_back(en->GetObjectID()); + } + } + + // Done with the directory for now. Recurse to sub directories + for(std::vector<int64_t>::const_iterator i = subDirs.begin(); i != subDirs.end(); ++i) + { + DeleteDirectoryRecurse((*i), rBlocksDeletedOut, Undelete); + } + } + + // Then, delete the files. Will need to load the directory again because it might have + // been removed from the cache. + { + // Get the directory... + BackupStoreDirectory &dir(GetDirectoryInternal(ObjectID)); + + // Changes made? + bool changesMade = false; + + // Run through files + BackupStoreDirectory::Iterator i(dir); + BackupStoreDirectory::Entry *en = 0; + + while((en = i.Next(Undelete?(BackupStoreDirectory::Entry::Flags_Deleted):(BackupStoreDirectory::Entry::Flags_INCLUDE_EVERYTHING), + Undelete?(0):(BackupStoreDirectory::Entry::Flags_Deleted))) != 0) // Ignore deleted directories (or not deleted if Undelete) + { + // Add/remove the deleted flags + if(Undelete) + { + en->RemoveFlags(BackupStoreDirectory::Entry::Flags_Deleted); + } + else + { + en->AddFlags(BackupStoreDirectory::Entry::Flags_Deleted); + } + + // Keep count of the deleted blocks + if((en->GetFlags() & BackupStoreDirectory::Entry::Flags_File) != 0) + { + rBlocksDeletedOut += en->GetSizeInBlocks(); + } + + // Did something + changesMade = true; + } + + // Save the directory + if(changesMade) + { + SaveDirectory(dir, ObjectID); + } + } + } + catch(...) + { + RemoveDirectoryFromCache(ObjectID); + throw; + } +} + + + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupStoreContext::ChangeDirAttributes(int64_t, const StreamableMemBlock &, int64_t) +// Purpose: Change the attributes of a directory +// Created: 2003/09/06 +// +// -------------------------------------------------------------------------- +void BackupStoreContext::ChangeDirAttributes(int64_t Directory, const StreamableMemBlock &Attributes, int64_t AttributesModTime) +{ + if(mapStoreInfo.get() == 0) + { + THROW_EXCEPTION(BackupStoreException, StoreInfoNotLoaded) + } + if(mReadOnly) + { + THROW_EXCEPTION(BackupStoreException, ContextIsReadOnly) + } + + try + { + // Get the directory we want to modify + BackupStoreDirectory &dir(GetDirectoryInternal(Directory)); + + // Set attributes + dir.SetAttributes(Attributes, AttributesModTime); + + // Save back + SaveDirectory(dir, Directory); + } + catch(...) + { + RemoveDirectoryFromCache(Directory); + throw; + } +} + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupStoreContext::ChangeFileAttributes(int64_t, int64_t, const StreamableMemBlock &, int64_t) +// Purpose: Sets the attributes on a directory entry. Returns true if the object existed, false if it didn't. +// Created: 2003/09/06 +// +// -------------------------------------------------------------------------- +bool BackupStoreContext::ChangeFileAttributes(const BackupStoreFilename &rFilename, int64_t InDirectory, const StreamableMemBlock &Attributes, int64_t AttributesHash, int64_t &rObjectIDOut) +{ + if(mapStoreInfo.get() == 0) + { + THROW_EXCEPTION(BackupStoreException, StoreInfoNotLoaded) + } + if(mReadOnly) + { + THROW_EXCEPTION(BackupStoreException, ContextIsReadOnly) + } + + try + { + // Get the directory we want to modify + BackupStoreDirectory &dir(GetDirectoryInternal(InDirectory)); + + // Find the file entry + BackupStoreDirectory::Entry *en = 0; + // Iterate through current versions of files, only + BackupStoreDirectory::Iterator i(dir); + while((en = i.Next( + BackupStoreDirectory::Entry::Flags_File, + BackupStoreDirectory::Entry::Flags_Deleted | BackupStoreDirectory::Entry::Flags_OldVersion) + ) != 0) + { + if(en->GetName() == rFilename) + { + // Set attributes + en->SetAttributes(Attributes, AttributesHash); + + // Tell caller the object ID + rObjectIDOut = en->GetObjectID(); + + // Done + break; + } + } + if(en == 0) + { + // Didn't find it + return false; + } + + // Save back + SaveDirectory(dir, InDirectory); + } + catch(...) + { + RemoveDirectoryFromCache(InDirectory); + throw; + } + + // Changed, everything OK + return true; +} + + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupStoreContext::ObjectExists(int64_t) +// Purpose: Test to see if an object of this ID exists in the store +// Created: 2003/09/03 +// +// -------------------------------------------------------------------------- +bool BackupStoreContext::ObjectExists(int64_t ObjectID, int MustBe) +{ + if(mapStoreInfo.get() == 0) + { + THROW_EXCEPTION(BackupStoreException, StoreInfoNotLoaded) + } + + // Note that we need to allow object IDs a little bit greater than the last one in the store info, + // because the store info may not have got saved in an error condition. Max greater ID is + // STORE_INFO_SAVE_DELAY in this case, *2 to be safe. + if(ObjectID <= 0 || ObjectID > (mapStoreInfo->GetLastObjectIDUsed() + (STORE_INFO_SAVE_DELAY * 2))) + { + // Obviously bad object ID + return false; + } + + // Test to see if it exists on the disc + std::string filename; + MakeObjectFilename(ObjectID, filename); + if(!RaidFileRead::FileExists(mStoreDiscSet, filename)) + { + // RaidFile reports no file there + return false; + } + + // Do we need to be more specific? + if(MustBe != ObjectExists_Anything) + { + // Open the file + std::auto_ptr<RaidFileRead> objectFile(RaidFileRead::Open(mStoreDiscSet, filename)); + + // Read the first integer + u_int32_t magic; + if(!objectFile->ReadFullBuffer(&magic, sizeof(magic), 0 /* not interested in how many read if failure */)) + { + // Failed to get any bytes, must have failed + return false; + } + +#ifndef BOX_DISABLE_BACKWARDS_COMPATIBILITY_BACKUPSTOREFILE + if(MustBe == ObjectExists_File && ntohl(magic) == OBJECTMAGIC_FILE_MAGIC_VALUE_V0) + { + // Old version detected + return true; + } +#endif + + // Right one? + u_int32_t requiredMagic = (MustBe == ObjectExists_File)?OBJECTMAGIC_FILE_MAGIC_VALUE_V1:OBJECTMAGIC_DIR_MAGIC_VALUE; + + // Check + if(ntohl(magic) != requiredMagic) + { + return false; + } + + // File is implicitly closed + } + + return true; +} + + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupStoreContext::OpenObject(int64_t) +// Purpose: Opens an object +// Created: 2003/09/03 +// +// -------------------------------------------------------------------------- +std::auto_ptr<IOStream> BackupStoreContext::OpenObject(int64_t ObjectID) +{ + if(mapStoreInfo.get() == 0) + { + THROW_EXCEPTION(BackupStoreException, StoreInfoNotLoaded) + } + + // Attempt to open the file + std::string fn; + MakeObjectFilename(ObjectID, fn); + return std::auto_ptr<IOStream>(RaidFileRead::Open(mStoreDiscSet, fn).release()); +} + + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupStoreContext::GetClientStoreMarker() +// Purpose: Retrieve the client store marker +// Created: 2003/10/29 +// +// -------------------------------------------------------------------------- +int64_t BackupStoreContext::GetClientStoreMarker() +{ + if(mapStoreInfo.get() == 0) + { + THROW_EXCEPTION(BackupStoreException, StoreInfoNotLoaded) + } + + return mapStoreInfo->GetClientStoreMarker(); +} + + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupStoreContext::GetStoreDiscUsageInfo(int64_t &, int64_t &, int64_t &) +// Purpose: Get disc usage info from store info +// Created: 1/1/04 +// +// -------------------------------------------------------------------------- +void BackupStoreContext::GetStoreDiscUsageInfo(int64_t &rBlocksUsed, int64_t &rBlocksSoftLimit, int64_t &rBlocksHardLimit) +{ + if(mapStoreInfo.get() == 0) + { + THROW_EXCEPTION(BackupStoreException, StoreInfoNotLoaded) + } + + rBlocksUsed = mapStoreInfo->GetBlocksUsed(); + rBlocksSoftLimit = mapStoreInfo->GetBlocksSoftLimit(); + rBlocksHardLimit = mapStoreInfo->GetBlocksHardLimit(); +} + + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupStoreContext::HardLimitExceeded() +// Purpose: Returns true if the hard limit has been exceeded +// Created: 1/1/04 +// +// -------------------------------------------------------------------------- +bool BackupStoreContext::HardLimitExceeded() +{ + if(mapStoreInfo.get() == 0) + { + THROW_EXCEPTION(BackupStoreException, StoreInfoNotLoaded) + } + + return mapStoreInfo->GetBlocksUsed() > mapStoreInfo->GetBlocksHardLimit(); +} + + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupStoreContext::SetClientStoreMarker(int64_t) +// Purpose: Sets the client store marker, and commits it to disc +// Created: 2003/10/29 +// +// -------------------------------------------------------------------------- +void BackupStoreContext::SetClientStoreMarker(int64_t ClientStoreMarker) +{ + if(mapStoreInfo.get() == 0) + { + THROW_EXCEPTION(BackupStoreException, StoreInfoNotLoaded) + } + if(mReadOnly) + { + THROW_EXCEPTION(BackupStoreException, ContextIsReadOnly) + } + + mapStoreInfo->SetClientStoreMarker(ClientStoreMarker); + SaveStoreInfo(false /* don't delay saving this */); +} + + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupStoreContext::MoveObject(int64_t, int64_t, int64_t, const BackupStoreFilename &, bool) +// Purpose: Move an object (and all objects with the same name) from one directory to another +// Created: 12/11/03 +// +// -------------------------------------------------------------------------- +void BackupStoreContext::MoveObject(int64_t ObjectID, int64_t MoveFromDirectory, int64_t MoveToDirectory, const BackupStoreFilename &rNewFilename, bool MoveAllWithSameName, bool AllowMoveOverDeletedObject) +{ + if(mReadOnly) + { + THROW_EXCEPTION(BackupStoreException, ContextIsReadOnly) + } + + // Should deleted files be excluded when checking for the existance of objects with the target name? + int64_t targetSearchExcludeFlags = (AllowMoveOverDeletedObject) + ?(BackupStoreDirectory::Entry::Flags_Deleted) + :(BackupStoreDirectory::Entry::Flags_EXCLUDE_NOTHING); + + // Special case if the directories are the same... + if(MoveFromDirectory == MoveToDirectory) + { + try + { + // Get the first directory + BackupStoreDirectory &dir(GetDirectoryInternal(MoveFromDirectory)); + + // Find the file entry + BackupStoreDirectory::Entry *en = dir.FindEntryByID(ObjectID); + + // Error if not found + if(en == 0) + { + THROW_EXCEPTION(BackupStoreException, CouldNotFindEntryInDirectory) + } + + // Check the new name doens't already exist (optionally ignoring deleted files) + { + BackupStoreDirectory::Iterator i(dir); + BackupStoreDirectory::Entry *c = 0; + while((c = i.Next(BackupStoreDirectory::Entry::Flags_INCLUDE_EVERYTHING, targetSearchExcludeFlags)) != 0) + { + if(c->GetName() == rNewFilename) + { + THROW_EXCEPTION(BackupStoreException, NameAlreadyExistsInDirectory) + } + } + } + + // Need to get all the entries with the same name? + if(MoveAllWithSameName) + { + // Iterate through the directory, copying all with matching names + BackupStoreDirectory::Iterator i(dir); + BackupStoreDirectory::Entry *c = 0; + while((c = i.Next()) != 0) + { + if(c->GetName() == en->GetName()) + { + // Rename this one + c->SetName(rNewFilename); + } + } + } + else + { + // Just copy this one + en->SetName(rNewFilename); + } + + // Save the directory back + SaveDirectory(dir, MoveFromDirectory); + } + catch(...) + { + RemoveDirectoryFromCache(MoveToDirectory); // either will do, as they're the same + throw; + } + + return; + } + + // Got to be careful how this is written, as we can't guarentte that if we have two + // directories open, the first won't be deleted as the second is opened. (cache) + + // List of entries to move + std::vector<BackupStoreDirectory::Entry *> moving; + + // list of directory IDs which need to have containing dir id changed + std::vector<int64_t> dirsToChangeContainingID; + + try + { + // First of all, get copies of the entries to move to the to directory. + + { + // Get the first directory + BackupStoreDirectory &from(GetDirectoryInternal(MoveFromDirectory)); + + // Find the file entry + BackupStoreDirectory::Entry *en = from.FindEntryByID(ObjectID); + + // Error if not found + if(en == 0) + { + THROW_EXCEPTION(BackupStoreException, CouldNotFindEntryInDirectory) + } + + // Need to get all the entries with the same name? + if(MoveAllWithSameName) + { + // Iterate through the directory, copying all with matching names + BackupStoreDirectory::Iterator i(from); + BackupStoreDirectory::Entry *c = 0; + while((c = i.Next()) != 0) + { + if(c->GetName() == en->GetName()) + { + // Copy + moving.push_back(new BackupStoreDirectory::Entry(*c)); + + // Check for containing directory correction + if(c->GetFlags() & BackupStoreDirectory::Entry::Flags_Dir) dirsToChangeContainingID.push_back(c->GetObjectID()); + } + } + ASSERT(!moving.empty()); + } + else + { + // Just copy this one + moving.push_back(new BackupStoreDirectory::Entry(*en)); + + // Check for containing directory correction + if(en->GetFlags() & BackupStoreDirectory::Entry::Flags_Dir) dirsToChangeContainingID.push_back(en->GetObjectID()); + } + } + + // Secondly, insert them into the to directory, and save it + + { + // To directory + BackupStoreDirectory &to(GetDirectoryInternal(MoveToDirectory)); + + // Check the new name doens't already exist + { + BackupStoreDirectory::Iterator i(to); + BackupStoreDirectory::Entry *c = 0; + while((c = i.Next(BackupStoreDirectory::Entry::Flags_INCLUDE_EVERYTHING, targetSearchExcludeFlags)) != 0) + { + if(c->GetName() == rNewFilename) + { + THROW_EXCEPTION(BackupStoreException, NameAlreadyExistsInDirectory) + } + } + } + + // Copy the entries into it, changing the name as we go + for(std::vector<BackupStoreDirectory::Entry *>::iterator i(moving.begin()); i != moving.end(); ++i) + { + BackupStoreDirectory::Entry *en = (*i); + en->SetName(rNewFilename); + to.AddEntry(*en); // adds copy + } + + // Save back + SaveDirectory(to, MoveToDirectory); + } + + // Thirdly... remove them from the first directory -- but if it fails, attempt to delete them from the to directory + try + { + // Get directory + BackupStoreDirectory &from(GetDirectoryInternal(MoveFromDirectory)); + + // Delete each one + for(std::vector<BackupStoreDirectory::Entry *>::iterator i(moving.begin()); i != moving.end(); ++i) + { + from.DeleteEntry((*i)->GetObjectID()); + } + + // Save back + SaveDirectory(from, MoveFromDirectory); + } + catch(...) + { + // UNDO modification to To directory + + // Get directory + BackupStoreDirectory &to(GetDirectoryInternal(MoveToDirectory)); + + // Delete each one + for(std::vector<BackupStoreDirectory::Entry *>::iterator i(moving.begin()); i != moving.end(); ++i) + { + to.DeleteEntry((*i)->GetObjectID()); + } + + // Save back + SaveDirectory(to, MoveToDirectory); + + // Throw the error + throw; + } + + // Finally... for all the directories we moved, modify their containing directory ID + for(std::vector<int64_t>::iterator i(dirsToChangeContainingID.begin()); i != dirsToChangeContainingID.end(); ++i) + { + // Load the directory + BackupStoreDirectory &change(GetDirectoryInternal(*i)); + + // Modify containing dir ID + change.SetContainerID(MoveToDirectory); + + // Save it back + SaveDirectory(change, *i); + } + } + catch(...) + { + // Make sure directories aren't in the cache, as they may have been modified + RemoveDirectoryFromCache(MoveToDirectory); + RemoveDirectoryFromCache(MoveFromDirectory); + for(std::vector<int64_t>::iterator i(dirsToChangeContainingID.begin()); i != dirsToChangeContainingID.end(); ++i) + { + RemoveDirectoryFromCache(*i); + } + + while(!moving.empty()) + { + delete moving.back(); + moving.pop_back(); + } + throw; + } + + // Clean up + while(!moving.empty()) + { + delete moving.back(); + moving.pop_back(); + } +} + + + +// -------------------------------------------------------------------------- +// +// Function +// Name: BackupStoreContext::GetBackupStoreInfo() +// Purpose: Return the backup store info object, exception if it isn't loaded +// Created: 19/4/04 +// +// -------------------------------------------------------------------------- +const BackupStoreInfo &BackupStoreContext::GetBackupStoreInfo() const +{ + if(mapStoreInfo.get() == 0) + { + THROW_EXCEPTION(BackupStoreException, StoreInfoNotLoaded) + } + + return *(mapStoreInfo.get()); +} + + diff --git a/lib/backupstore/BackupStoreContext.h b/lib/backupstore/BackupStoreContext.h new file mode 100644 index 00000000..44a05dd8 --- /dev/null +++ b/lib/backupstore/BackupStoreContext.h @@ -0,0 +1,186 @@ +// -------------------------------------------------------------------------- +// +// File +// Name: BackupStoreContext.h +// Purpose: Context for backup store server +// Created: 2003/08/20 +// +// -------------------------------------------------------------------------- + +#ifndef BACKUPCONTEXT__H +#define BACKUPCONTEXT__H + +#include <string> +#include <map> +#include <memory> + +#include "BackupStoreRefCountDatabase.h" +#include "NamedLock.h" +#include "ProtocolObject.h" +#include "Utils.h" + +class BackupStoreDirectory; +class BackupStoreFilename; +class BackupStoreDaemon; +class BackupStoreInfo; +class IOStream; +class BackupProtocolObject; +class StreamableMemBlock; + +class HousekeepingInterface +{ + public: + virtual ~HousekeepingInterface() { } + virtual void SendMessageToHousekeepingProcess(const void *Msg, int MsgLen) = 0; +}; + +// -------------------------------------------------------------------------- +// +// Class +// Name: BackupStoreContext +// Purpose: Context for backup store server +// Created: 2003/08/20 +// +// -------------------------------------------------------------------------- +class BackupStoreContext +{ +public: + BackupStoreContext(int32_t ClientID, HousekeepingInterface &rDaemon); + ~BackupStoreContext(); +private: + BackupStoreContext(const BackupStoreContext &rToCopy); +public: + + void ReceivedFinishCommand(); + void CleanUp(); + + int32_t GetClientID() {return mClientID;} + + enum + { + Phase_START = 0, + Phase_Version = 0, + Phase_Login = 1, + Phase_Commands = 2 + }; + + int GetPhase() const {return mProtocolPhase;} + void SetPhase(int NewPhase) {mProtocolPhase = NewPhase;} + + // Read only locking + bool SessionIsReadOnly() {return mReadOnly;} + bool AttemptToGetWriteLock(); + + void SetClientHasAccount(const std::string &rStoreRoot, int StoreDiscSet) {mClientHasAccount = true; mStoreRoot = rStoreRoot; mStoreDiscSet = StoreDiscSet;} + bool GetClientHasAccount() const {return mClientHasAccount;} + const std::string &GetStoreRoot() const {return mStoreRoot;} + int GetStoreDiscSet() const {return mStoreDiscSet;} + + // Store info + void LoadStoreInfo(); + void SaveStoreInfo(bool AllowDelay = true); + const BackupStoreInfo &GetBackupStoreInfo() const; + + // Client marker + int64_t GetClientStoreMarker(); + void SetClientStoreMarker(int64_t ClientStoreMarker); + + // Usage information + void GetStoreDiscUsageInfo(int64_t &rBlocksUsed, int64_t &rBlocksSoftLimit, int64_t &rBlocksHardLimit); + bool HardLimitExceeded(); + + // Reading directories + // -------------------------------------------------------------------------- + // + // Function + // Name: BackupStoreContext::GetDirectory(int64_t) + // Purpose: Return a reference to a directory. Valid only until the + // next time a function which affects directories is called. + // Mainly this funciton, and creation of files. + // Created: 2003/09/02 + // + // -------------------------------------------------------------------------- + const BackupStoreDirectory &GetDirectory(int64_t ObjectID) + { + // External callers aren't allowed to change it -- this function + // merely turns the the returned directory const. + return GetDirectoryInternal(ObjectID); + } + + // Manipulating files/directories + int64_t AddFile(IOStream &rFile, int64_t InDirectory, int64_t ModificationTime, int64_t AttributesHash, int64_t DiffFromFileID, const BackupStoreFilename &rFilename, bool MarkFileWithSameNameAsOldVersions); + int64_t AddDirectory(int64_t InDirectory, const BackupStoreFilename &rFilename, const StreamableMemBlock &Attributes, int64_t AttributesModTime, bool &rAlreadyExists); + void ChangeDirAttributes(int64_t Directory, const StreamableMemBlock &Attributes, int64_t AttributesModTime); + bool ChangeFileAttributes(const BackupStoreFilename &rFilename, int64_t InDirectory, const StreamableMemBlock &Attributes, int64_t AttributesHash, int64_t &rObjectIDOut); + bool DeleteFile(const BackupStoreFilename &rFilename, int64_t InDirectory, int64_t &rObjectIDOut); + bool UndeleteFile(int64_t ObjectID, int64_t InDirectory); + void DeleteDirectory(int64_t ObjectID, bool Undelete = false); + void MoveObject(int64_t ObjectID, int64_t MoveFromDirectory, int64_t MoveToDirectory, const BackupStoreFilename &rNewFilename, bool MoveAllWithSameName, bool AllowMoveOverDeletedObject); + + // Manipulating objects + enum + { + ObjectExists_Anything = 0, + ObjectExists_File = 1, + ObjectExists_Directory = 2 + }; + bool ObjectExists(int64_t ObjectID, int MustBe = ObjectExists_Anything); + std::auto_ptr<IOStream> OpenObject(int64_t ObjectID); + + // Info + int32_t GetClientID() const {return mClientID;} + +private: + void MakeObjectFilename(int64_t ObjectID, std::string &rOutput, bool EnsureDirectoryExists = false); + BackupStoreDirectory &GetDirectoryInternal(int64_t ObjectID); + void SaveDirectory(BackupStoreDirectory &rDir, int64_t ObjectID); + void RemoveDirectoryFromCache(int64_t ObjectID); + void DeleteDirectoryRecurse(int64_t ObjectID, int64_t &rBlocksDeletedOut, bool Undelete); + int64_t AllocateObjectID(); + + int32_t mClientID; + HousekeepingInterface &mrDaemon; + int mProtocolPhase; + bool mClientHasAccount; + std::string mStoreRoot; // has final directory separator + int mStoreDiscSet; + bool mReadOnly; + NamedLock mWriteLock; + int mSaveStoreInfoDelay; // how many times to delay saving the store info + + // Store info + std::auto_ptr<BackupStoreInfo> mapStoreInfo; + + // Refcount database + std::auto_ptr<BackupStoreRefCountDatabase> mapRefCount; + + // Directory cache + std::map<int64_t, BackupStoreDirectory*> mDirectoryCache; + +public: + class TestHook + { + public: + virtual std::auto_ptr<ProtocolObject> StartCommand(BackupProtocolObject& + rCommand) = 0; + virtual ~TestHook() { } + }; + void SetTestHook(TestHook& rTestHook) + { + mpTestHook = &rTestHook; + } + std::auto_ptr<ProtocolObject> StartCommandHook(BackupProtocolObject& rCommand) + { + if(mpTestHook) + { + return mpTestHook->StartCommand(rCommand); + } + return std::auto_ptr<ProtocolObject>(); + } + +private: + TestHook* mpTestHook; +}; + +#endif // BACKUPCONTEXT__H + diff --git a/lib/backupclient/BackupStoreDirectory.cpp b/lib/backupstore/BackupStoreDirectory.cpp index 0d06da34..0d06da34 100644 --- a/lib/backupclient/BackupStoreDirectory.cpp +++ b/lib/backupstore/BackupStoreDirectory.cpp diff --git a/lib/backupclient/BackupStoreDirectory.h b/lib/backupstore/BackupStoreDirectory.h index 0dfe6422..0dfe6422 100644 --- a/lib/backupclient/BackupStoreDirectory.h +++ b/lib/backupstore/BackupStoreDirectory.h diff --git a/lib/backupclient/BackupStoreException.h b/lib/backupstore/BackupStoreException.h index 981dfa60..981dfa60 100644 --- a/lib/backupclient/BackupStoreException.h +++ b/lib/backupstore/BackupStoreException.h diff --git a/lib/backupclient/BackupStoreException.txt b/lib/backupstore/BackupStoreException.txt index ece772c0..ece772c0 100644 --- a/lib/backupclient/BackupStoreException.txt +++ b/lib/backupstore/BackupStoreException.txt diff --git a/lib/backupclient/BackupStoreFile.cpp b/lib/backupstore/BackupStoreFile.cpp index bd62b7ba..bd62b7ba 100644 --- a/lib/backupclient/BackupStoreFile.cpp +++ b/lib/backupstore/BackupStoreFile.cpp diff --git a/lib/backupclient/BackupStoreFile.h b/lib/backupstore/BackupStoreFile.h index f5bc1924..f5bc1924 100644 --- a/lib/backupclient/BackupStoreFile.h +++ b/lib/backupstore/BackupStoreFile.h diff --git a/lib/backupclient/BackupStoreFileCryptVar.cpp b/lib/backupstore/BackupStoreFileCryptVar.cpp index e826de4e..e826de4e 100644 --- a/lib/backupclient/BackupStoreFileCryptVar.cpp +++ b/lib/backupstore/BackupStoreFileCryptVar.cpp diff --git a/lib/backupclient/BackupStoreFileCryptVar.h b/lib/backupstore/BackupStoreFileCryptVar.h index 566813c8..566813c8 100644 --- a/lib/backupclient/BackupStoreFileCryptVar.h +++ b/lib/backupstore/BackupStoreFileCryptVar.h diff --git a/lib/backupclient/BackupStoreFileEncodeStream.cpp b/lib/backupstore/BackupStoreFileEncodeStream.cpp index e9d773f0..e9d773f0 100644 --- a/lib/backupclient/BackupStoreFileEncodeStream.cpp +++ b/lib/backupstore/BackupStoreFileEncodeStream.cpp diff --git a/lib/backupclient/BackupStoreFileEncodeStream.h b/lib/backupstore/BackupStoreFileEncodeStream.h index 023994af..023994af 100644 --- a/lib/backupclient/BackupStoreFileEncodeStream.h +++ b/lib/backupstore/BackupStoreFileEncodeStream.h diff --git a/lib/backupclient/BackupStoreFileRevDiff.cpp b/lib/backupstore/BackupStoreFileRevDiff.cpp index 509eef61..509eef61 100644 --- a/lib/backupclient/BackupStoreFileRevDiff.cpp +++ b/lib/backupstore/BackupStoreFileRevDiff.cpp diff --git a/lib/backupclient/BackupStoreFileWire.h b/lib/backupstore/BackupStoreFileWire.h index 49e94aa5..49e94aa5 100644 --- a/lib/backupclient/BackupStoreFileWire.h +++ b/lib/backupstore/BackupStoreFileWire.h diff --git a/lib/backupclient/BackupStoreFilename.cpp b/lib/backupstore/BackupStoreFilename.cpp index 72cd1acd..72cd1acd 100644 --- a/lib/backupclient/BackupStoreFilename.cpp +++ b/lib/backupstore/BackupStoreFilename.cpp diff --git a/lib/backupclient/BackupStoreFilename.h b/lib/backupstore/BackupStoreFilename.h index 80db9516..80db9516 100644 --- a/lib/backupclient/BackupStoreFilename.h +++ b/lib/backupstore/BackupStoreFilename.h diff --git a/lib/backupclient/BackupStoreFilenameClear.cpp b/lib/backupstore/BackupStoreFilenameClear.cpp index e529d8d3..e529d8d3 100644 --- a/lib/backupclient/BackupStoreFilenameClear.cpp +++ b/lib/backupstore/BackupStoreFilenameClear.cpp diff --git a/lib/backupclient/BackupStoreFilenameClear.h b/lib/backupstore/BackupStoreFilenameClear.h index d4c45701..d4c45701 100644 --- a/lib/backupclient/BackupStoreFilenameClear.h +++ b/lib/backupstore/BackupStoreFilenameClear.h diff --git a/lib/backupclient/BackupStoreObjectMagic.h b/lib/backupstore/BackupStoreObjectMagic.h index 7ee600a2..7ee600a2 100644 --- a/lib/backupclient/BackupStoreObjectMagic.h +++ b/lib/backupstore/BackupStoreObjectMagic.h diff --git a/lib/backupclient/Makefile.extra b/lib/backupstore/Makefile.extra index df3319df..bc807fb6 100644 --- a/lib/backupclient/Makefile.extra +++ b/lib/backupstore/Makefile.extra @@ -1,12 +1,16 @@ MAKEPROTOCOL = ../../lib/server/makeprotocol.pl -GEN_CMD_SRV = $(MAKEPROTOCOL) Client ../../bin/bbstored/backupprotocol.txt +GEN_CMD_CLI = $(MAKEPROTOCOL) Client backupprotocol.txt +GEN_CMD_SRV = $(MAKEPROTOCOL) Server backupprotocol.txt # AUTOGEN SEEDING -autogen_BackupProtocolClient.cpp autogen_BackupProtocolClient.h: $(MAKEPROTOCOL) ../../bin/bbstored/backupprotocol.txt - $(_PERL) $(GEN_CMD_SRV) +autogen_BackupProtocolClient.cpp autogen_BackupProtocolClient.h: $(MAKEPROTOCOL) backupprotocol.txt + $(_PERL) $(GEN_CMD_CLI) +# AUTOGEN SEEDING +autogen_BackupProtocolServer.cpp autogen_BackupProtocolServer.h: $(MAKEPROTOCOL) backupprotocol.txt + $(_PERL) $(GEN_CMD_SRV) MAKEEXCEPTION = ../../lib/common/makeexception.pl diff --git a/lib/backupclient/RunStatusProvider.h b/lib/backupstore/RunStatusProvider.h index 89f361ca..89f361ca 100644 --- a/lib/backupclient/RunStatusProvider.h +++ b/lib/backupstore/RunStatusProvider.h diff --git a/lib/backupstore/backupprotocol.txt b/lib/backupstore/backupprotocol.txt new file mode 100644 index 00000000..011458e8 --- /dev/null +++ b/lib/backupstore/backupprotocol.txt @@ -0,0 +1,235 @@ +# +# backup protocol definition +# + +Name Backup +IdentString Box-Backup:v=C +ServerContextClass BackupStoreContext BackupStoreContext.h + +ClientType Filename BackupStoreFilenameClear BackupStoreFilenameClear.h +ServerType Filename BackupStoreFilename BackupStoreFilename.h + +ImplementLog Server syslog +ImplementLog Client syslog +ImplementLog Client file + +LogTypeToText Client Filename \"%s\" VAR.GetClearFilename().c_str() + +BEGIN_OBJECTS + +# ------------------------------------------------------------------------------------- +# Session commands +# ------------------------------------------------------------------------------------- + +Error 0 IsError(Type,SubType) Reply + int32 Type + int32 SubType + CONSTANT ErrorType 1000 + CONSTANT Err_WrongVersion 1 + CONSTANT Err_NotInRightProtocolPhase 2 + CONSTANT Err_BadLogin 3 + CONSTANT Err_CannotLockStoreForWriting 4 + CONSTANT Err_SessionReadOnly 5 + CONSTANT Err_FileDoesNotVerify 6 + CONSTANT Err_DoesNotExist 7 + CONSTANT Err_DirectoryAlreadyExists 8 + CONSTANT Err_CannotDeleteRoot 9 + CONSTANT Err_TargetNameExists 10 + CONSTANT Err_StorageLimitExceeded 11 + CONSTANT Err_DiffFromFileDoesNotExist 12 + CONSTANT Err_DoesNotExistInDirectory 13 + CONSTANT Err_PatchConsistencyError 14 + CONSTANT Err_MultiplyReferencedObject 15 + +Version 1 Command(Version) Reply + int32 Version + + +Login 2 Command(LoginConfirmed) + int32 ClientID + int32 Flags + CONSTANT Flags_ReadOnly 1 + + +LoginConfirmed 3 Reply + int64 ClientStoreMarker + int64 BlocksUsed + int64 BlocksSoftLimit + int64 BlocksHardLimit + + +Finished 4 Command(Finished) Reply EndsConversation + + +# generic success object +Success 5 Reply + int64 ObjectID + + +SetClientStoreMarker 6 Command(Success) + int64 ClientStoreMarker + + +# ------------------------------------------------------------------------------------- +# Generic object commands +# ------------------------------------------------------------------------------------- + +GetObject 10 Command(Success) + int64 ObjectID + CONSTANT NoObject 0 + # reply has stream following, if ObjectID != NoObject + + +MoveObject 11 Command(Success) + int64 ObjectID + int64 MoveFromDirectory + int64 MoveToDirectory + int32 Flags + Filename NewFilename + + CONSTANT Flags_MoveAllWithSameName 1 + CONSTANT Flags_AllowMoveOverDeletedObject 2 + +# consider this an object command as, although it deals with directory entries, +# it's not specific to either a file or a directory + + +GetObjectName 12 Command(ObjectName) + int64 ObjectID + int64 ContainingDirectoryID + CONSTANT ObjectID_DirectoryOnly 0 + + # set ObjectID to ObjectID_DirectoryOnly to only get info on the directory + + +ObjectName 13 Reply + int32 NumNameElements + int64 ModificationTime + int64 AttributesHash + int16 Flags + # NumNameElements is zero if the object doesn't exist + CONSTANT NumNameElements_ObjectDoesntExist 0 + # a stream of Filename objects follows, if and only if NumNameElements > 0 + + +# ------------------------------------------------------------------------------------- +# Directory commands +# ------------------------------------------------------------------------------------- + +CreateDirectory 20 Command(Success) StreamWithCommand + int64 ContainingDirectoryID + int64 AttributesModTime + Filename DirectoryName + # stream following containing attributes + + +ListDirectory 21 Command(Success) + int64 ObjectID + int16 FlagsMustBeSet + int16 FlagsNotToBeSet + bool SendAttributes + # make sure these flags are synced with those in BackupStoreDirectory + CONSTANT Flags_INCLUDE_EVERYTHING -1 + CONSTANT Flags_EXCLUDE_NOTHING 0 + CONSTANT Flags_EXCLUDE_EVERYTHING 15 + CONSTANT Flags_File 1 + CONSTANT Flags_Dir 2 + CONSTANT Flags_Deleted 4 + CONSTANT Flags_OldVersion 8 + # make sure this is the same as in BackupStoreConstants.h + CONSTANT RootDirectory 1 + + # reply has stream following Success object, containing a stored BackupStoreDirectory + + +ChangeDirAttributes 22 Command(Success) StreamWithCommand + int64 ObjectID + int64 AttributesModTime + # stream following containing attributes + + +DeleteDirectory 23 Command(Success) + int64 ObjectID + +UndeleteDirectory 24 Command(Success) + int64 ObjectID + # may not have exactly the desired effect if files within in have been deleted before the directory was deleted. + + +# ------------------------------------------------------------------------------------- +# File commands +# ------------------------------------------------------------------------------------- + +StoreFile 30 Command(Success) StreamWithCommand + int64 DirectoryObjectID + int64 ModificationTime + int64 AttributesHash + int64 DiffFromFileID # 0 if the file is not a diff + Filename Filename + # then send a stream containing the encoded file + + +GetFile 31 Command(Success) + int64 InDirectory + int64 ObjectID + # error returned if not a file, or does not exist + # reply has stream following, containing an encoded file IN STREAM ORDER + # (use GetObject to get it in file order) + + +SetReplacementFileAttributes 32 Command(Success) StreamWithCommand + int64 InDirectory + int64 AttributesHash + Filename Filename + # stream follows containing attributes + + +DeleteFile 33 Command(Success) + int64 InDirectory + Filename Filename + # will return 0 if the object couldn't be found in the specified directory + + +GetBlockIndexByID 34 Command(Success) + int64 ObjectID + + # stream of the block index follows the reply + # returns an error if the object didn't exist + + +GetBlockIndexByName 35 Command(Success) + int64 InDirectory + Filename Filename + + # Success object contains the found ID -- or 0 if the entry wasn't found in the directory + # stream of the block index follows the reply if found ID != 0 + + +UndeleteFile 36 Command(Success) + int64 InDirectory + int64 ObjectID + # will return 0 if the object couldn't be found in the specified directory + + +# ------------------------------------------------------------------------------------- +# Information commands +# ------------------------------------------------------------------------------------- + +GetAccountUsage 40 Command(AccountUsage) + # no data members + +AccountUsage 41 Reply + int64 BlocksUsed + int64 BlocksInOldFiles + int64 BlocksInDeletedFiles + int64 BlocksInDirectories + int64 BlocksSoftLimit + int64 BlocksHardLimit + int32 BlockSize + +GetIsAlive 42 Command(IsAlive) + # no data members + +IsAlive 43 Reply + # no data members + |