mirror of https://github.com/akuker/RASCSI.git
530 lines
20 KiB
C++
530 lines
20 KiB
C++
//---------------------------------------------------------------------------
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//
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// SCSI Target Emulator RaSCSI (*^..^*)
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// for Raspberry Pi
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//
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// Copyright (C) 2021 Uwe Seimet
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//
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//---------------------------------------------------------------------------
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#include "devices/file_support.h"
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#include "devices/disk.h"
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#include "devices/device_factory.h"
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#include "devices/device.h"
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#include "protobuf_util.h"
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#include "rascsi_version.h"
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#include "rascsi_interface.pb.h"
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#include "rascsi_image.h"
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#include "rascsi_response.h"
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using namespace rascsi_interface;
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using namespace protobuf_util;
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RascsiResponse::RascsiResponse(DeviceFactory *device_factory, const RascsiImage *rascsi_image)
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{
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this->device_factory = device_factory;
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this->rascsi_image = rascsi_image;
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}
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PbDeviceProperties *RascsiResponse::GetDeviceProperties(const Device *device)
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{
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PbDeviceProperties *properties = new PbDeviceProperties();
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properties->set_luns(device->GetSupportedLuns());
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properties->set_read_only(device->IsReadOnly());
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properties->set_protectable(device->IsProtectable());
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properties->set_stoppable(device->IsStoppable());
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properties->set_removable(device->IsRemovable());
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properties->set_lockable(device->IsLockable());
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properties->set_supports_file(dynamic_cast<const FileSupport *>(device));
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properties->set_supports_params(device->SupportsParams());
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PbDeviceType t = UNDEFINED;
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PbDeviceType_Parse(device->GetType(), &t);
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if (device->SupportsParams()) {
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for (const auto& param : device_factory->GetDefaultParams(t)) {
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auto& map = *properties->mutable_default_params();
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map[param.first] = param.second;
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}
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}
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for (const auto& block_size : device_factory->GetSectorSizes(t)) {
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properties->add_block_sizes(block_size);
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}
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return properties;
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}
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void RascsiResponse::GetDeviceTypeProperties(PbDeviceTypesInfo& device_types_info, PbDeviceType type)
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{
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PbDeviceTypeProperties *type_properties = device_types_info.add_properties();
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type_properties->set_type(type);
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Device *device = device_factory->CreateDevice(type, "");
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type_properties->set_allocated_properties(GetDeviceProperties(device));
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delete device;
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}
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void RascsiResponse::GetAllDeviceTypeProperties(PbDeviceTypesInfo& device_types_info)
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{
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int ordinal = 1;
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while (PbDeviceType_IsValid(ordinal)) {
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PbDeviceType type = UNDEFINED;
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PbDeviceType_Parse(PbDeviceType_Name((PbDeviceType)ordinal), &type);
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GetDeviceTypeProperties(device_types_info, type);
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ordinal++;
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}
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}
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void RascsiResponse::GetDevice(const Device *device, PbDevice *pb_device)
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{
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pb_device->set_id(device->GetId());
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pb_device->set_unit(device->GetLun());
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pb_device->set_vendor(device->GetVendor());
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pb_device->set_product(device->GetProduct());
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pb_device->set_revision(device->GetRevision());
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PbDeviceType type = UNDEFINED;
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PbDeviceType_Parse(device->GetType(), &type);
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pb_device->set_type(type);
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pb_device->set_allocated_properties(GetDeviceProperties(device));
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PbDeviceStatus *status = new PbDeviceStatus();
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pb_device->set_allocated_status(status);
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status->set_protected_(device->IsProtected());
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status->set_stopped(device->IsStopped());
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status->set_removed(device->IsRemoved());
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status->set_locked(device->IsLocked());
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if (device->SupportsParams()) {
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for (const auto& param : device->GetParams()) {
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AddParam(*pb_device, param.first, param.second);
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}
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}
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const Disk *disk = dynamic_cast<const Disk*>(device);
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if (disk) {
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pb_device->set_block_size(device->IsRemoved()? 0 : disk->GetSectorSizeInBytes());
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pb_device->set_block_count(device->IsRemoved() ? 0: disk->GetBlockCount());
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}
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const FileSupport *file_support = dynamic_cast<const FileSupport *>(device);
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if (file_support) {
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Filepath filepath;
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file_support->GetPath(filepath);
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PbImageFile *image_file = new PbImageFile();
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GetImageFile(image_file, device->IsRemovable() && !device->IsReady() ? "" : filepath.GetPath());
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pb_device->set_allocated_file(image_file);
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}
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}
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bool RascsiResponse::GetImageFile(PbImageFile *image_file, const string& filename)
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{
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if (!filename.empty()) {
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image_file->set_name(filename);
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image_file->set_type(device_factory->GetTypeForFile(filename));
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string f = filename[0] == '/' ? filename : rascsi_image->GetDefaultImageFolder() + "/" + filename;
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image_file->set_read_only(access(f.c_str(), W_OK));
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struct stat st;
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if (!stat(f.c_str(), &st) && !S_ISDIR(st.st_mode)) {
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image_file->set_size(st.st_size);
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return true;
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}
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}
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return false;
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}
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void RascsiResponse::GetAvailableImages(PbImageFilesInfo& image_files_info, const string& default_image_folder,
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const string& folder, const string& folder_pattern, const string& file_pattern, int scan_depth) {
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string folder_pattern_lower = folder_pattern;
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transform(folder_pattern_lower.begin(), folder_pattern_lower.end(), folder_pattern_lower.begin(), ::tolower);
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string file_pattern_lower = file_pattern;
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transform(file_pattern_lower.begin(), file_pattern_lower.end(), file_pattern_lower.begin(), ::tolower);
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if (scan_depth-- >= 0) {
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DIR *d = opendir(folder.c_str());
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if (d) {
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struct dirent *dir;
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while ((dir = readdir(d))) {
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bool is_supported_type = dir->d_type == DT_REG || dir->d_type == DT_DIR || dir->d_type == DT_LNK || dir->d_type == DT_BLK;
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if (is_supported_type && dir->d_name[0] != '.') {
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string name_lower = dir->d_name;
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if (!file_pattern.empty()) {
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transform(name_lower.begin(), name_lower.end(), name_lower.begin(), ::tolower);
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}
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string filename = folder + "/" + dir->d_name;
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struct stat st;
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if (dir->d_type == DT_REG && !stat(filename.c_str(), &st)) {
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if (!st.st_size) {
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LOGWARN("File '%s' in image folder '%s' has a size of 0 bytes", dir->d_name, folder.c_str());
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continue;
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}
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} else if (dir->d_type == DT_LNK && stat(filename.c_str(), &st)) {
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LOGWARN("Symlink '%s' in image folder '%s' is broken", dir->d_name, folder.c_str());
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continue;
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} else if (dir->d_type == DT_DIR) {
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if (folder_pattern_lower.empty() || name_lower.find(folder_pattern_lower) != string::npos) {
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GetAvailableImages(image_files_info, default_image_folder, filename, folder_pattern,
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file_pattern, scan_depth);
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}
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continue;
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}
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if (file_pattern_lower.empty() || name_lower.find(file_pattern_lower) != string::npos) {
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PbImageFile *image_file = new PbImageFile();
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if (GetImageFile(image_file, filename)) {
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GetImageFile(image_files_info.add_image_files(), filename.substr(default_image_folder.length() + 1));
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}
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delete image_file;
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}
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}
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}
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closedir(d);
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}
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}
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}
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PbImageFilesInfo *RascsiResponse::GetAvailableImages(PbResult& result, const string& folder_pattern,
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const string& file_pattern, int scan_depth)
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{
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PbImageFilesInfo *image_files_info = new PbImageFilesInfo();
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string default_image_folder = rascsi_image->GetDefaultImageFolder();
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image_files_info->set_default_image_folder(default_image_folder);
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image_files_info->set_depth(scan_depth);
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GetAvailableImages(*image_files_info, default_image_folder, default_image_folder, folder_pattern,
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file_pattern, scan_depth);
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result.set_status(true);
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return image_files_info;
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}
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void RascsiResponse::GetAvailableImages(PbResult& result, PbServerInfo& server_info, const string& folder_pattern,
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const string& file_pattern, int scan_depth)
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{
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PbImageFilesInfo *image_files_info = GetAvailableImages(result, folder_pattern, file_pattern, scan_depth);
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image_files_info->set_default_image_folder(rascsi_image->GetDefaultImageFolder());
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server_info.set_allocated_image_files_info(image_files_info);
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result.set_status(true);
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}
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PbReservedIdsInfo *RascsiResponse::GetReservedIds(PbResult& result, const set<int>& ids)
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{
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PbReservedIdsInfo *reserved_ids_info = new PbReservedIdsInfo();
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for (int id : ids) {
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reserved_ids_info->add_ids(id);
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}
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result.set_status(true);
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return reserved_ids_info;
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}
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void RascsiResponse::GetDevices(PbServerInfo& server_info, const vector<Device *>& devices)
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{
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for (const Device *device : devices) {
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// Skip if unit does not exist or is not assigned
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if (device) {
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PbDevice *pb_device = server_info.mutable_devices_info()->add_devices();
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GetDevice(device, pb_device);
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}
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}
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}
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void RascsiResponse::GetDevicesInfo(PbResult& result, const PbCommand& command, const vector<Device *>& devices,
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int unit_count)
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{
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set<id_set> id_sets;
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if (!command.devices_size()) {
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for (const Device *device : devices) {
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if (device) {
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id_sets.insert(make_pair(device->GetId(), device->GetLun()));
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}
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}
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}
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else {
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for (const auto& device : command.devices()) {
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if (devices[device.id() * unit_count + device.unit()]) {
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id_sets.insert(make_pair(device.id(), device.unit()));
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}
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else {
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result.set_status(false);
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result.set_msg("No device for ID " + to_string(device.id()) + ", unit " + to_string(device.unit()));
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return;
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}
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}
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}
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PbDevicesInfo *devices_info = new PbDevicesInfo();
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result.set_allocated_devices_info(devices_info);
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for (const auto& id_set : id_sets) {
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const Device *device = devices[id_set.first * unit_count + id_set.second];
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GetDevice(device, devices_info->add_devices());
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}
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result.set_status(true);
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}
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PbDeviceTypesInfo *RascsiResponse::GetDeviceTypesInfo(PbResult& result, const PbCommand& command)
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{
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PbDeviceTypesInfo *device_types_info = new PbDeviceTypesInfo();
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GetAllDeviceTypeProperties(*device_types_info);
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result.set_status(true);
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return device_types_info;
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}
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PbServerInfo *RascsiResponse::GetServerInfo(PbResult& result, const vector<Device *>& devices, const set<int>& reserved_ids,
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const string& current_log_level, const string& folder_pattern, const string& file_pattern, int scan_depth)
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{
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PbServerInfo *server_info = new PbServerInfo();
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server_info->set_allocated_version_info(GetVersionInfo(result));
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server_info->set_allocated_log_level_info(GetLogLevelInfo(result, current_log_level));
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GetAllDeviceTypeProperties(*server_info->mutable_device_types_info());
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GetAvailableImages(result, *server_info, folder_pattern, file_pattern, scan_depth);
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server_info->set_allocated_network_interfaces_info(GetNetworkInterfacesInfo(result));
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server_info->set_allocated_mapping_info(GetMappingInfo(result));
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GetDevices(*server_info, devices);
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server_info->set_allocated_reserved_ids_info(GetReservedIds(result, reserved_ids));
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server_info->set_allocated_operation_info(GetOperationInfo(result, scan_depth));
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result.set_status(true);
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return server_info;
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}
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PbVersionInfo *RascsiResponse::GetVersionInfo(PbResult& result)
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{
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PbVersionInfo *version_info = new PbVersionInfo();
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version_info->set_major_version(rascsi_major_version);
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version_info->set_minor_version(rascsi_minor_version);
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version_info->set_patch_version(rascsi_patch_version);
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result.set_status(true);
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return version_info;
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}
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PbLogLevelInfo *RascsiResponse::GetLogLevelInfo(PbResult& result, const string& current_log_level)
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{
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PbLogLevelInfo *log_level_info = new PbLogLevelInfo();
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for (const auto& log_level : log_levels) {
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log_level_info->add_log_levels(log_level);
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}
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log_level_info->set_current_log_level(current_log_level);
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result.set_status(true);
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return log_level_info;
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}
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PbNetworkInterfacesInfo *RascsiResponse::GetNetworkInterfacesInfo(PbResult& result)
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{
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PbNetworkInterfacesInfo *network_interfaces_info = new PbNetworkInterfacesInfo();
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for (const auto& network_interface : device_factory->GetNetworkInterfaces()) {
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network_interfaces_info->add_name(network_interface);
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}
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result.set_status(true);
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return network_interfaces_info;
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}
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PbMappingInfo *RascsiResponse::GetMappingInfo(PbResult& result)
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{
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PbMappingInfo *mapping_info = new PbMappingInfo();
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for (const auto& mapping : device_factory->GetExtensionMapping()) {
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(*mapping_info->mutable_mapping())[mapping.first] = mapping.second;
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}
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result.set_status(true);
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return mapping_info;
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}
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PbOperationInfo *RascsiResponse::GetOperationInfo(PbResult& result, int depth)
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{
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PbOperationInfo *operation_info = new PbOperationInfo();
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PbOperationMetaData *meta_data = new PbOperationMetaData();
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AddOperationParameter(meta_data, "name", "Image file name in case of a mass storage device");
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AddOperationParameter(meta_data, "interface", "Comma-separated prioritized network interface list");
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AddOperationParameter(meta_data, "inet", "IP address and netmask of the network bridge");
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AddOperationParameter(meta_data, "cmd", "Print command for the printer device");
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AddOperationParameter(meta_data, "timeout", "Reservation timeout for the printer device in seconds");
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CreateOperation(operation_info, meta_data, ATTACH, "Attach device, device-specific parameters are required");
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meta_data = new PbOperationMetaData();
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CreateOperation(operation_info, meta_data, DETACH, "Detach device, device-specific parameters are required");
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meta_data = new PbOperationMetaData();
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CreateOperation(operation_info, meta_data, DETACH_ALL, "Detach all devices");
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meta_data = new PbOperationMetaData();
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CreateOperation(operation_info, meta_data, START, "Start device, device-specific parameters are required");
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meta_data = new PbOperationMetaData();
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CreateOperation(operation_info, meta_data, STOP, "Stop device, device-specific parameters are required");
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meta_data = new PbOperationMetaData();
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AddOperationParameter(meta_data, "file", "Image file name", "", true);
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CreateOperation(operation_info, meta_data, INSERT, "Insert medium, device-specific parameters are required");
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meta_data = new PbOperationMetaData();
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CreateOperation(operation_info, meta_data, EJECT, "Eject medium, device-specific parameters are required");
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meta_data = new PbOperationMetaData();
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CreateOperation(operation_info, meta_data, PROTECT, "Protect medium, device-specific parameters are required");
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meta_data = new PbOperationMetaData();
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CreateOperation(operation_info, meta_data, UNPROTECT, "Unprotect medium, device-specific parameters are required");
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meta_data = new PbOperationMetaData();
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if (depth) {
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AddOperationParameter(meta_data, "folder_pattern", "Pattern for filtering image folder names");
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}
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AddOperationParameter(meta_data, "file_pattern", "Pattern for filtering image file names");
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CreateOperation(operation_info, meta_data, SERVER_INFO, "Get rascsi server information");
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meta_data = new PbOperationMetaData();
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CreateOperation(operation_info, meta_data, VERSION_INFO, "Get rascsi server version");
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meta_data = new PbOperationMetaData();
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CreateOperation(operation_info, meta_data, DEVICES_INFO, "Get information on attached devices");
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meta_data = new PbOperationMetaData();
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CreateOperation(operation_info, meta_data, DEVICE_TYPES_INFO, "Get device properties by device type");
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meta_data = new PbOperationMetaData();
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if (depth) {
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AddOperationParameter(meta_data, "folder_pattern", "Pattern for filtering image folder names");
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}
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AddOperationParameter(meta_data, "file_pattern", "Pattern for filtering image file names");
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CreateOperation(operation_info, meta_data, DEFAULT_IMAGE_FILES_INFO, "Get information on available image files");
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meta_data = new PbOperationMetaData();
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AddOperationParameter(meta_data, "file", "Image file name", "", true);
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CreateOperation(operation_info, meta_data, IMAGE_FILE_INFO, "Get information on image file");
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meta_data = new PbOperationMetaData();
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CreateOperation(operation_info, meta_data, LOG_LEVEL_INFO, "Get log level information");
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meta_data = new PbOperationMetaData();
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CreateOperation(operation_info, meta_data, NETWORK_INTERFACES_INFO, "Get the available network interfaces");
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meta_data = new PbOperationMetaData();
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CreateOperation(operation_info, meta_data, MAPPING_INFO, "Get mapping of extensions to device types");
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meta_data = new PbOperationMetaData();
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CreateOperation(operation_info, meta_data, RESERVED_IDS_INFO, "Get list of reserved device IDs");
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meta_data = new PbOperationMetaData();
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AddOperationParameter(meta_data, "folder", "Default image file folder name", "", true);
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CreateOperation(operation_info, meta_data, DEFAULT_FOLDER, "Set default image file folder");
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meta_data = new PbOperationMetaData();
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AddOperationParameter(meta_data, "level", "New log level", "", true);
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CreateOperation(operation_info, meta_data, LOG_LEVEL, "Set log level");
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meta_data = new PbOperationMetaData();
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AddOperationParameter(meta_data, "ids", "Comma-separated device ID list", "", true);
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CreateOperation(operation_info, meta_data, RESERVE_IDS, "Reserve device IDs");
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meta_data = new PbOperationMetaData();
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PbOperationParameter *parameter = AddOperationParameter(meta_data, "mode", "Shutdown mode", "", true);
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parameter->add_permitted_values("rascsi");
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// System shutdown/reboot requires root permissions
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if (!getuid()) {
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parameter->add_permitted_values("system");
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parameter->add_permitted_values("reboot");
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}
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CreateOperation(operation_info, meta_data, SHUT_DOWN, "Shut down or reboot");
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meta_data = new PbOperationMetaData();
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AddOperationParameter(meta_data, "file", "Image file name", "", true);
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AddOperationParameter(meta_data, "size", "Image file size in bytes", "", true);
|
|
parameter = AddOperationParameter(meta_data, "read_only", "Read-only flag", "false");
|
|
parameter->add_permitted_values("true");
|
|
parameter->add_permitted_values("false");
|
|
CreateOperation(operation_info, meta_data, CREATE_IMAGE, "Create an image file");
|
|
|
|
meta_data = new PbOperationMetaData();
|
|
AddOperationParameter(meta_data, "file", "Image file name", "", true);
|
|
CreateOperation(operation_info, meta_data, DELETE_IMAGE, "Delete image file");
|
|
|
|
meta_data = new PbOperationMetaData();
|
|
AddOperationParameter(meta_data, "from", "Source image file name", "", true);
|
|
AddOperationParameter(meta_data, "to", "Destination image file name", "", true);
|
|
CreateOperation(operation_info, meta_data, RENAME_IMAGE, "Rename image file");
|
|
|
|
meta_data = new PbOperationMetaData();
|
|
AddOperationParameter(meta_data, "from", "Source image file name", "", true);
|
|
AddOperationParameter(meta_data, "to", "Destination image file name", "", true);
|
|
parameter = AddOperationParameter(meta_data, "read_only", "Read-only flag", "false");
|
|
parameter->add_permitted_values("true");
|
|
parameter->add_permitted_values("false");
|
|
CreateOperation(operation_info, meta_data, COPY_IMAGE, "Copy image file");
|
|
|
|
meta_data = new PbOperationMetaData();
|
|
AddOperationParameter(meta_data, "file", "Image file name", "", true);
|
|
CreateOperation(operation_info, meta_data, PROTECT_IMAGE, "Write-protect image file");
|
|
|
|
meta_data = new PbOperationMetaData();
|
|
AddOperationParameter(meta_data, "file", "Image file name", "", true);
|
|
CreateOperation(operation_info, meta_data, UNPROTECT_IMAGE, "Make image file writable");
|
|
|
|
meta_data = new PbOperationMetaData();
|
|
AddOperationParameter(meta_data, "token", "Authentication token to be checked", "", true);
|
|
CreateOperation(operation_info, meta_data, CHECK_AUTHENTICATION, "Check whether an authentication token is valid");
|
|
|
|
meta_data = new PbOperationMetaData();
|
|
CreateOperation(operation_info, meta_data, OPERATION_INFO, "Get operation meta data");
|
|
|
|
result.set_status(true);
|
|
|
|
return operation_info;
|
|
}
|
|
|
|
void RascsiResponse::CreateOperation(PbOperationInfo *operation_info, PbOperationMetaData *meta_data,
|
|
const PbOperation& operation, const string& description)
|
|
{
|
|
meta_data->set_server_side_name(PbOperation_Name(operation));
|
|
meta_data->set_description(description);
|
|
int ordinal = PbOperation_descriptor()->FindValueByName(PbOperation_Name(operation))->index();
|
|
(*operation_info->mutable_operations())[ordinal] = *meta_data;
|
|
delete meta_data;
|
|
}
|
|
|
|
PbOperationParameter *RascsiResponse::AddOperationParameter(PbOperationMetaData *meta_data, const string& name,
|
|
const string& description, const string& default_value, bool is_mandatory)
|
|
{
|
|
PbOperationParameter *parameter = meta_data->add_parameters();
|
|
parameter->set_name(name);
|
|
parameter->set_description(description);
|
|
parameter->set_default_value(default_value);
|
|
parameter->set_is_mandatory(is_mandatory);
|
|
|
|
return parameter;
|
|
}
|