/* * Copyright (c) Atmosphère-NX * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, * version 2, as published by the Free Software Foundation. * * This program is distributed in the hope it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <haze.hpp> #include <haze/ptp_data_builder.hpp> #include <haze/ptp_data_parser.hpp> #include <haze/ptp_responder_types.hpp> namespace haze { Result PtpResponder::GetDeviceInfo(PtpDataParser &dp) { PtpDataBuilder db(m_buffers->usb_bulk_write_buffer, std::addressof(m_usb_server)); /* Write the device info data. */ R_TRY(db.WriteVariableLengthData(m_request_header, [&] () { R_TRY(db.Add(MtpStandardVersion)); R_TRY(db.Add(MtpVendorExtensionId)); R_TRY(db.Add(MtpStandardVersion)); R_TRY(db.AddString(MtpVendorExtensionDesc)); R_TRY(db.Add(MtpFunctionalModeDefault)); R_TRY(db.AddArray(SupportedOperationCodes, util::size(SupportedOperationCodes))); R_TRY(db.AddArray(SupportedEventCodes, util::size(SupportedEventCodes))); R_TRY(db.AddArray(SupportedDeviceProperties, util::size(SupportedDeviceProperties))); R_TRY(db.AddArray(SupportedCaptureFormats, util::size(SupportedCaptureFormats))); R_TRY(db.AddArray(SupportedPlaybackFormats, util::size(SupportedPlaybackFormats))); R_TRY(db.AddString(MtpDeviceManufacturer)); R_TRY(db.AddString(MtpDeviceModel)); R_TRY(db.AddString(GetFirmwareVersion())); R_TRY(db.AddString(GetSerialNumber())); R_SUCCEED(); })); /* Write the success response. */ R_RETURN(this->WriteResponse(PtpResponseCode_Ok)); } Result PtpResponder::OpenSession(PtpDataParser &dp) { R_TRY(dp.Finalize()); /* Close, if we're already open. */ this->ForceCloseSession(); /* Initialize the database. */ m_session_open = true; m_object_database.Initialize(m_object_heap); /* Create the root storages. */ PtpObject *object; R_TRY(m_object_database.CreateOrFindObject("", "", PtpGetObjectHandles_RootParent, std::addressof(object))); /* Register the root storages. */ m_object_database.RegisterObject(object, StorageId_SdmcFs); /* Write the success response. */ R_RETURN(this->WriteResponse(PtpResponseCode_Ok)); } Result PtpResponder::CloseSession(PtpDataParser &dp) { R_TRY(dp.Finalize()); this->ForceCloseSession(); /* Write the success response. */ R_RETURN(this->WriteResponse(PtpResponseCode_Ok)); } Result PtpResponder::GetStorageIds(PtpDataParser &dp) { R_TRY(dp.Finalize()); PtpDataBuilder db(m_buffers->usb_bulk_write_buffer, std::addressof(m_usb_server)); /* Write the storage ID array. */ R_TRY(db.WriteVariableLengthData(m_request_header, [&] { R_RETURN(db.AddArray(SupportedStorageIds, util::size(SupportedStorageIds))); })); /* Write the success response. */ R_RETURN(this->WriteResponse(PtpResponseCode_Ok)); } Result PtpResponder::GetStorageInfo(PtpDataParser &dp) { PtpDataBuilder db(m_buffers->usb_bulk_write_buffer, std::addressof(m_usb_server)); PtpStorageInfo storage_info(DefaultStorageInfo); /* Get the storage ID the client requested information for. */ u32 storage_id; R_TRY(dp.Read(std::addressof(storage_id))); R_TRY(dp.Finalize()); /* Get the info from fs. */ switch (storage_id) { case StorageId_SdmcFs: { s64 total_space, free_space; R_TRY(m_fs.GetTotalSpace("/", std::addressof(total_space))); R_TRY(m_fs.GetFreeSpace("/", std::addressof(free_space))); storage_info.max_capacity = total_space; storage_info.free_space_in_bytes = free_space; storage_info.free_space_in_images = 0; storage_info.storage_description = "SD Card"; } break; default: R_THROW(haze::ResultInvalidStorageId()); } /* Write the storage info data. */ R_TRY(db.WriteVariableLengthData(m_request_header, [&] () { R_TRY(db.Add(storage_info.storage_type)); R_TRY(db.Add(storage_info.filesystem_type)); R_TRY(db.Add(storage_info.access_capability)); R_TRY(db.Add(storage_info.max_capacity)); R_TRY(db.Add(storage_info.free_space_in_bytes)); R_TRY(db.Add(storage_info.free_space_in_images)); R_TRY(db.AddString(storage_info.storage_description)); R_TRY(db.AddString(storage_info.volume_label)); R_SUCCEED(); })); /* Write the success response. */ R_RETURN(this->WriteResponse(PtpResponseCode_Ok)); } Result PtpResponder::GetObjectHandles(PtpDataParser &dp) { PtpDataBuilder db(m_buffers->usb_bulk_write_buffer, std::addressof(m_usb_server)); /* Get the object ID the client requested enumeration for. */ u32 storage_id, object_format_code, association_object_handle; R_TRY(dp.Read(std::addressof(storage_id))); R_TRY(dp.Read(std::addressof(object_format_code))); R_TRY(dp.Read(std::addressof(association_object_handle))); R_TRY(dp.Finalize()); /* Handle top-level requests. */ if (storage_id == PtpGetObjectHandles_AllStorage) { storage_id = StorageId_SdmcFs; } /* Rewrite requests for enumerating storage directories. */ if (association_object_handle == PtpGetObjectHandles_RootParent) { association_object_handle = storage_id; } /* Check if we know about the object. If we don't, it's an error. */ auto * const obj = m_object_database.GetObjectById(association_object_handle); R_UNLESS(obj != nullptr, haze::ResultInvalidObjectId()); /* Try to read the object as a directory. */ FsDir dir; R_TRY(m_fs.OpenDirectory(obj->GetName(), FsDirOpenMode_ReadDirs | FsDirOpenMode_ReadFiles, std::addressof(dir))); /* Ensure we maintain a clean state on exit. */ ON_SCOPE_EXIT { m_fs.CloseDirectory(std::addressof(dir)); }; /* Count how many entries are in the directory. */ s64 entry_count = 0; R_TRY(m_fs.GetDirectoryEntryCount(std::addressof(dir), std::addressof(entry_count))); /* Begin writing. */ R_TRY(db.AddDataHeader(m_request_header, sizeof(u32) + (entry_count * sizeof(u32)))); R_TRY(db.Add(static_cast<u32>(entry_count))); /* Enumerate the directory, writing results to the data builder as we progress. */ /* TODO: How should we handle the directory contents changing during enumeration? */ /* Is this even feasible to handle? */ while (true) { /* Get the next batch. */ s64 read_count = 0; R_TRY(m_fs.ReadDirectory(std::addressof(dir), std::addressof(read_count), DirectoryReadSize, m_buffers->file_system_entry_buffer)); /* Write to output. */ for (s64 i = 0; i < read_count; i++) { const char *name = m_buffers->file_system_entry_buffer[i].name; u32 handle; R_TRY(m_object_database.CreateAndRegisterObjectId(obj->GetName(), name, obj->GetObjectId(), std::addressof(handle))); R_TRY(db.Add(handle)); } /* If we read fewer than the batch size, we're done. */ if (read_count < DirectoryReadSize) { break; } } /* Flush the data response. */ R_TRY(db.Commit()); /* Write the success response. */ R_RETURN(this->WriteResponse(PtpResponseCode_Ok)); } Result PtpResponder::GetObjectInfo(PtpDataParser &dp) { PtpDataBuilder db(m_buffers->usb_bulk_write_buffer, std::addressof(m_usb_server)); /* Get the object ID the client requested info for. */ u32 object_id; R_TRY(dp.Read(std::addressof(object_id))); R_TRY(dp.Finalize()); /* Check if we know about the object. If we don't, it's an error. */ auto * const obj = m_object_database.GetObjectById(object_id); R_UNLESS(obj != nullptr, haze::ResultInvalidObjectId()); /* Build info about the object. */ PtpObjectInfo object_info(DefaultObjectInfo); if (object_id == StorageId_SdmcFs) { /* The SD Card directory has some special properties. */ object_info.object_format = PtpObjectFormatCode_Association; object_info.association_type = PtpAssociationType_GenericFolder; object_info.filename = "SD Card"; } else { /* Figure out what type of object this is. */ FsDirEntryType entry_type; R_TRY(m_fs.GetEntryType(obj->GetName(), std::addressof(entry_type))); /* Get the size, if we are requesting info about a file. */ s64 size = 0; if (entry_type == FsDirEntryType_File) { FsFile file; R_TRY(m_fs.OpenFile(obj->GetName(), FsOpenMode_Read, std::addressof(file))); /* Ensure we maintain a clean state on exit. */ ON_SCOPE_EXIT { m_fs.CloseFile(std::addressof(file)); }; R_TRY(m_fs.GetFileSize(std::addressof(file), std::addressof(size))); } object_info.filename = std::strrchr(obj->GetName(), '/') + 1; object_info.object_compressed_size = size; object_info.parent_object = obj->GetParentId(); if (entry_type == FsDirEntryType_Dir) { object_info.object_format = PtpObjectFormatCode_Association; object_info.association_type = PtpAssociationType_GenericFolder; } else { object_info.object_format = PtpObjectFormatCode_Undefined; object_info.association_type = PtpAssociationType_Undefined; } } /* Write the object info data. */ R_TRY(db.WriteVariableLengthData(m_request_header, [&] () { R_TRY(db.Add(object_info.storage_id)); R_TRY(db.Add(object_info.object_format)); R_TRY(db.Add(object_info.protection_status)); R_TRY(db.Add(object_info.object_compressed_size)); R_TRY(db.Add(object_info.thumb_format)); R_TRY(db.Add(object_info.thumb_compressed_size)); R_TRY(db.Add(object_info.thumb_width)); R_TRY(db.Add(object_info.thumb_height)); R_TRY(db.Add(object_info.image_width)); R_TRY(db.Add(object_info.image_height)); R_TRY(db.Add(object_info.image_depth)); R_TRY(db.Add(object_info.parent_object)); R_TRY(db.Add(object_info.association_type)); R_TRY(db.Add(object_info.association_desc)); R_TRY(db.Add(object_info.sequence_number)); R_TRY(db.AddString(object_info.filename)); R_TRY(db.AddString(object_info.capture_date)); R_TRY(db.AddString(object_info.modification_date)); R_TRY(db.AddString(object_info.keywords)); R_SUCCEED(); })); /* Write the success response. */ R_RETURN(this->WriteResponse(PtpResponseCode_Ok)); } Result PtpResponder::GetObject(PtpDataParser &dp) { PtpDataBuilder db(m_buffers->usb_bulk_write_buffer, std::addressof(m_usb_server)); /* Get the object ID the client requested. */ u32 object_id; R_TRY(dp.Read(std::addressof(object_id))); R_TRY(dp.Finalize()); /* Check if we know about the object. If we don't, it's an error. */ auto * const obj = m_object_database.GetObjectById(object_id); R_UNLESS(obj != nullptr, haze::ResultInvalidObjectId()); /* Lock the object as a file. */ FsFile file; R_TRY(m_fs.OpenFile(obj->GetName(), FsOpenMode_Read, std::addressof(file))); /* Ensure we maintain a clean state on exit. */ ON_SCOPE_EXIT { m_fs.CloseFile(std::addressof(file)); }; /* Get the file's size. */ s64 size = 0; R_TRY(m_fs.GetFileSize(std::addressof(file), std::addressof(size))); /* Send the header and file size. */ R_TRY(db.AddDataHeader(m_request_header, size)); /* Begin reading the file, writing data to the builder as we progress. */ s64 offset = 0; while (true) { /* Get the next batch. */ u64 bytes_read; R_TRY(m_fs.ReadFile(std::addressof(file), offset, m_buffers->file_system_data_buffer, FsBufferSize, FsReadOption_None, std::addressof(bytes_read))); offset += bytes_read; /* Write to output. */ R_TRY(db.AddBuffer(m_buffers->file_system_data_buffer, bytes_read)); /* If we read fewer bytes than the batch size, we're done. */ if (bytes_read < FsBufferSize) { break; } } /* Flush the data response. */ R_TRY(db.Commit()); /* Write the success response. */ R_RETURN(this->WriteResponse(PtpResponseCode_Ok)); } Result PtpResponder::SendObjectInfo(PtpDataParser &rdp) { /* Get the storage ID and parent object and flush the request packet. */ u32 storage_id, parent_object; R_TRY(rdp.Read(std::addressof(storage_id))); R_TRY(rdp.Read(std::addressof(parent_object))); R_TRY(rdp.Finalize()); PtpDataParser dp(m_buffers->usb_bulk_read_buffer, std::addressof(m_usb_server)); PtpObjectInfo info(DefaultObjectInfo); /* Ensure we have a data header. */ PtpUsbBulkContainer data_header; R_TRY(dp.Read(std::addressof(data_header))); R_UNLESS(data_header.type == PtpUsbBulkContainerType_Data, haze::ResultUnknownRequestType()); R_UNLESS(data_header.code == m_request_header.code, haze::ResultOperationNotSupported()); R_UNLESS(data_header.trans_id == m_request_header.trans_id, haze::ResultOperationNotSupported()); /* Read in the object info. */ R_TRY(dp.Read(std::addressof(info.storage_id))); R_TRY(dp.Read(std::addressof(info.object_format))); R_TRY(dp.Read(std::addressof(info.protection_status))); R_TRY(dp.Read(std::addressof(info.object_compressed_size))); R_TRY(dp.Read(std::addressof(info.thumb_format))); R_TRY(dp.Read(std::addressof(info.thumb_compressed_size))); R_TRY(dp.Read(std::addressof(info.thumb_width))); R_TRY(dp.Read(std::addressof(info.thumb_height))); R_TRY(dp.Read(std::addressof(info.image_width))); R_TRY(dp.Read(std::addressof(info.image_height))); R_TRY(dp.Read(std::addressof(info.image_depth))); R_TRY(dp.Read(std::addressof(info.parent_object))); R_TRY(dp.Read(std::addressof(info.association_type))); R_TRY(dp.Read(std::addressof(info.association_desc))); R_TRY(dp.Read(std::addressof(info.sequence_number))); R_TRY(dp.ReadString(m_buffers->filename_string_buffer)); R_TRY(dp.ReadString(m_buffers->capture_date_string_buffer)); R_TRY(dp.ReadString(m_buffers->modification_date_string_buffer)); R_TRY(dp.ReadString(m_buffers->keywords_string_buffer)); R_TRY(dp.Finalize()); /* Rewrite requests for creating in storage directories. */ if (parent_object == PtpGetObjectHandles_RootParent) { parent_object = storage_id; } /* Check if we know about the parent object. If we don't, it's an error. */ auto * const parentobj = m_object_database.GetObjectById(parent_object); R_UNLESS(parentobj != nullptr, haze::ResultInvalidObjectId()); /* Make a new object with the intended name. */ PtpNewObjectInfo new_object_info; new_object_info.storage_id = StorageId_SdmcFs; new_object_info.parent_object_id = parent_object == storage_id ? 0 : parent_object; /* Create the object in the database. */ PtpObject *obj; R_TRY(m_object_database.CreateOrFindObject(parentobj->GetName(), m_buffers->filename_string_buffer, parentobj->GetObjectId(), std::addressof(obj))); /* Ensure we maintain a clean state on failure. */ ON_RESULT_FAILURE { m_object_database.DeleteObject(obj); }; /* Register the object with a new ID. */ m_object_database.RegisterObject(obj); new_object_info.object_id = obj->GetObjectId(); /* Create the object on the filesystem. */ if (info.object_format == PtpObjectFormatCode_Association) { R_TRY(m_fs.CreateDirectory(obj->GetName())); m_send_object_id = 0; } else { R_TRY(m_fs.CreateFile(obj->GetName(), 0, 0)); m_send_object_id = new_object_info.object_id; } /* Write the success response. */ R_RETURN(this->WriteResponse(PtpResponseCode_Ok, new_object_info)); } Result PtpResponder::SendObject(PtpDataParser &rdp) { /* Reset SendObject object ID on exit. */ ON_SCOPE_EXIT { m_send_object_id = 0; }; R_TRY(rdp.Finalize()); PtpDataParser dp(m_buffers->usb_bulk_read_buffer, std::addressof(m_usb_server)); /* Ensure we have a data header. */ PtpUsbBulkContainer data_header; R_TRY(dp.Read(std::addressof(data_header))); R_UNLESS(data_header.type == PtpUsbBulkContainerType_Data, haze::ResultUnknownRequestType()); R_UNLESS(data_header.code == m_request_header.code, haze::ResultOperationNotSupported()); R_UNLESS(data_header.trans_id == m_request_header.trans_id, haze::ResultOperationNotSupported()); /* Check if we know about the object. If we don't, it's an error. */ auto * const obj = m_object_database.GetObjectById(m_send_object_id); R_UNLESS(obj != nullptr, haze::ResultInvalidObjectId()); /* Lock the object as a file. */ FsFile file; R_TRY(m_fs.OpenFile(obj->GetName(), FsOpenMode_Write | FsOpenMode_Append, std::addressof(file))); /* Ensure we maintain a clean state on exit. */ ON_SCOPE_EXIT { m_fs.CloseFile(std::addressof(file)); }; /* Truncate the file after locking for write. */ s64 offset = 0; R_TRY(m_fs.SetFileSize(std::addressof(file), 0)); /* Expand to the needed size. */ if (data_header.length > sizeof(PtpUsbBulkContainer)) { R_TRY(m_fs.SetFileSize(std::addressof(file), data_header.length - sizeof(PtpUsbBulkContainer))); } /* Begin writing to the filesystem. */ while (true) { /* Read as many bytes as we can. */ u32 bytes_received; const Result read_res = dp.ReadBuffer(m_buffers->file_system_data_buffer, FsBufferSize, std::addressof(bytes_received)); /* Write to the file. */ R_TRY(m_fs.WriteFile(std::addressof(file), offset, m_buffers->file_system_data_buffer, bytes_received, 0)); offset += bytes_received; /* If we received fewer bytes than the batch size, we're done. */ if (haze::ResultEndOfTransmission::Includes(read_res)) { break; } R_TRY(read_res); } /* Truncate the file to the received size. */ R_TRY(m_fs.SetFileSize(std::addressof(file), offset)); /* Write the success response. */ R_RETURN(this->WriteResponse(PtpResponseCode_Ok)); } Result PtpResponder::DeleteObject(PtpDataParser &dp) { /* Get the object ID and flush the request packet. */ u32 object_id; R_TRY(dp.Read(std::addressof(object_id))); R_TRY(dp.Finalize()); /* Disallow deleting the storage root. */ R_UNLESS(object_id != StorageId_SdmcFs, haze::ResultInvalidObjectId()); /* Check if we know about the object. If we don't, it's an error. */ auto * const obj = m_object_database.GetObjectById(object_id); R_UNLESS(obj != nullptr, haze::ResultInvalidObjectId()); /* Figure out what type of object this is. */ FsDirEntryType entry_type; R_TRY(m_fs.GetEntryType(obj->GetName(), std::addressof(entry_type))); /* Remove the object from the filesystem. */ if (entry_type == FsDirEntryType_Dir) { R_TRY(m_fs.DeleteDirectoryRecursively(obj->GetName())); } else { R_TRY(m_fs.DeleteFile(obj->GetName())); } /* Remove the object from the database. */ m_object_database.DeleteObject(obj); /* Write the success response. */ R_RETURN(this->WriteResponse(PtpResponseCode_Ok)); } }