mirror of
https://github.com/akuker/RASCSI.git
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388 lines
8.5 KiB
C++
388 lines
8.5 KiB
C++
//---------------------------------------------------------------------------
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//
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// SCSI Target Emulator PiSCSI
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// for Raspberry Pi
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//
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// Copyright (C) 2021-2023 Uwe Seimet
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//
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//---------------------------------------------------------------------------
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#include "shared/network_util.h"
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#include "shared/piscsi_util.h"
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#include "shared/protobuf_util.h"
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#include "shared/piscsi_exceptions.h"
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#include "scsictl_commands.h"
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#include <sys/socket.h>
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#include <arpa/inet.h>
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#include <netinet/in.h>
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#include <unistd.h>
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#include <netdb.h>
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#include <iostream>
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#include <vector>
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using namespace std;
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using namespace piscsi_interface;
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using namespace network_util;
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using namespace piscsi_util;
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using namespace protobuf_util;
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bool ScsictlCommands::Execute(string_view log_level, string_view default_folder, string_view reserved_ids,
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string_view image_params, string_view filename)
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{
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switch(command.operation()) {
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case LOG_LEVEL:
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return CommandLogLevel(log_level);
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case DEFAULT_FOLDER:
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return CommandDefaultImageFolder(default_folder);
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case RESERVE_IDS:
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return CommandReserveIds(reserved_ids);
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case CREATE_IMAGE:
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return CommandCreateImage(image_params);
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case DELETE_IMAGE:
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return CommandDeleteImage(image_params);
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case RENAME_IMAGE:
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return CommandRenameImage(image_params);
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case COPY_IMAGE:
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return CommandCopyImage(image_params);
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case DEVICES_INFO:
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return CommandDeviceInfo();
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case DEVICE_TYPES_INFO:
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return CommandDeviceTypesInfo();
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case VERSION_INFO:
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return CommandVersionInfo();
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case SERVER_INFO:
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return CommandServerInfo();
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case DEFAULT_IMAGE_FILES_INFO:
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return CommandDefaultImageFilesInfo();
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case IMAGE_FILE_INFO:
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return CommandImageFileInfo(filename);
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case NETWORK_INTERFACES_INFO:
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return CommandNetworkInterfacesInfo();
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case LOG_LEVEL_INFO:
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return CommandLogLevelInfo();
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case RESERVED_IDS_INFO:
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return CommandReservedIdsInfo();
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case MAPPING_INFO:
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return CommandMappingInfo();
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case STATISTICS_INFO:
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return CommandStatisticsInfo();
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case OPERATION_INFO:
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return CommandOperationInfo();
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case NO_OPERATION:
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return false;
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default:
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return SendCommand();
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}
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return false;
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}
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bool ScsictlCommands::SendCommand()
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{
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sockaddr_in server_addr = {};
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if (!ResolveHostName(hostname, &server_addr)) {
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throw io_exception("Can't resolve hostname '" + hostname + "'");
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}
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const int fd = socket(AF_INET, SOCK_STREAM, 0);
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if (fd == -1) {
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throw io_exception("Can't create socket: " + string(strerror(errno)));
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}
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server_addr.sin_port = htons(uint16_t(port));
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if (connect(fd, (sockaddr *)&server_addr, sizeof(server_addr)) < 0) {
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close(fd);
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throw io_exception("Can't connect to piscsi on host '" + hostname + "', port " + to_string(port)
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+ ": " + strerror(errno));
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}
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if (write(fd, "RASCSI", 6) != 6) {
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close(fd);
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throw io_exception("Can't write magic");
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}
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SerializeMessage(fd, command);
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DeserializeMessage(fd, result);
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close(fd);
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if (!result.status()) {
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throw io_exception(result.msg());
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}
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if (!result.msg().empty()) {
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cout << result.msg() << endl;
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}
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return true;
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}
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bool ScsictlCommands::CommandDevicesInfo()
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{
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SendCommand();
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cout << scsictl_display.DisplayDevicesInfo(result.devices_info()) << flush;
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return true;
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}
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bool ScsictlCommands::CommandLogLevel(string_view log_level)
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{
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SetParam(command, "level", log_level);
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return SendCommand();
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}
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bool ScsictlCommands::CommandReserveIds(string_view reserved_ids)
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{
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SetParam(command, "ids", reserved_ids);
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return SendCommand();
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}
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bool ScsictlCommands::CommandCreateImage(string_view image_params)
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{
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if (!EvaluateParams(image_params, "file", "size")) {
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cerr << "Error: Invalid file descriptor '" << image_params << "', format is NAME:SIZE" << endl;
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return false;
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}
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SetParam(command, "read_only", "false");
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return SendCommand();
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}
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bool ScsictlCommands::CommandDeleteImage(string_view filename)
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{
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SetParam(command, "file", filename);
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return SendCommand();
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}
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bool ScsictlCommands::CommandRenameImage(string_view image_params)
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{
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if (!EvaluateParams(image_params, "from", "to")) {
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cerr << "Error: Invalid file descriptor '" << image_params << "', format is CURRENT_NAME:NEW_NAME" << endl;
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return false;
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}
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return SendCommand();
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}
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bool ScsictlCommands::CommandCopyImage(string_view image_params)
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{
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if (!EvaluateParams(image_params, "from", "to")) {
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cerr << "Error: Invalid file descriptor '" << image_params << "', format is CURRENT_NAME:NEW_NAME" << endl;
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return false;
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}
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return SendCommand();
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}
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bool ScsictlCommands::CommandDefaultImageFolder(string_view folder)
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{
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SetParam(command, "folder", folder);
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return SendCommand();
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}
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bool ScsictlCommands::CommandDeviceInfo()
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{
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SendCommand();
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for (const auto& device : result.devices_info().devices()) {
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cout << scsictl_display.DisplayDeviceInfo(device);
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}
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cout << flush;
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return true;
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}
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bool ScsictlCommands::CommandDeviceTypesInfo()
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{
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SendCommand();
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cout << scsictl_display.DisplayDeviceTypesInfo(result.device_types_info()) << flush;
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return true;
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}
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bool ScsictlCommands::CommandVersionInfo()
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{
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SendCommand();
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cout << scsictl_display.DisplayVersionInfo(result.version_info()) << flush;
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return true;
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}
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bool ScsictlCommands::CommandServerInfo()
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{
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SendCommand();
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PbServerInfo server_info = result.server_info();
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if (server_info.has_version_info()) {
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cout << scsictl_display.DisplayVersionInfo(server_info.version_info());
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}
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if (server_info.has_log_level_info()) {
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cout << scsictl_display.DisplayLogLevelInfo(server_info.log_level_info());
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}
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if (server_info.has_image_files_info()) {
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cout << scsictl_display.DisplayImageFilesInfo(server_info.image_files_info());
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}
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if (server_info.has_mapping_info()) {
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cout << scsictl_display.DisplayMappingInfo(server_info.mapping_info());
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}
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if (server_info.has_network_interfaces_info()) {
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cout << scsictl_display.DisplayNetworkInterfaces(server_info.network_interfaces_info());
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}
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if (server_info.has_device_types_info()) {
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cout << scsictl_display.DisplayDeviceTypesInfo(server_info.device_types_info());
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}
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if (server_info.has_reserved_ids_info()) {
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cout << scsictl_display.DisplayReservedIdsInfo(server_info.reserved_ids_info());
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}
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if (server_info.has_statistics_info()) {
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cout << scsictl_display.DisplayStatisticsInfo(server_info.statistics_info());
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}
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if (server_info.has_operation_info()) {
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cout << scsictl_display.DisplayOperationInfo(server_info.operation_info());
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}
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if (server_info.has_devices_info() && server_info.devices_info().devices_size()) {
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vector<PbDevice> sorted_devices = { server_info.devices_info().devices().begin(), server_info.devices_info().devices().end() };
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ranges::sort(sorted_devices, [](const auto& a, const auto& b) { return a.id() < b.id() || a.unit() < b.unit(); });
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cout << "Attached devices:\n";
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for (const auto& device : sorted_devices) {
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cout << scsictl_display.DisplayDeviceInfo(device);
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}
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}
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cout << flush;
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return true;
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}
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bool ScsictlCommands::CommandDefaultImageFilesInfo()
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{
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SendCommand();
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cout << scsictl_display.DisplayImageFilesInfo(result.image_files_info()) << flush;
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return true;
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}
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bool ScsictlCommands::CommandImageFileInfo(string_view filename)
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{
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SetParam(command, "file", filename);
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SendCommand();
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cout << scsictl_display.DisplayImageFile(result.image_file_info()) << flush;
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return true;
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}
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bool ScsictlCommands::CommandNetworkInterfacesInfo()
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{
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SendCommand();
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cout << scsictl_display.DisplayNetworkInterfaces(result.network_interfaces_info()) << flush;
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return true;
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}
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bool ScsictlCommands::CommandLogLevelInfo()
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{
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SendCommand();
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cout << scsictl_display.DisplayLogLevelInfo(result.log_level_info()) << flush;
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return true;
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}
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bool ScsictlCommands::CommandReservedIdsInfo()
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{
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SendCommand();
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cout << scsictl_display.DisplayReservedIdsInfo(result.reserved_ids_info()) << flush;
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return true;
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}
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bool ScsictlCommands::CommandMappingInfo()
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{
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SendCommand();
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cout << scsictl_display.DisplayMappingInfo(result.mapping_info()) << flush;
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return true;
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}
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bool ScsictlCommands::CommandStatisticsInfo()
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{
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SendCommand();
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cout << scsictl_display.DisplayStatisticsInfo(result.statistics_info()) << flush;
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return true;
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}
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bool ScsictlCommands::CommandOperationInfo()
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{
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SendCommand();
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cout << scsictl_display.DisplayOperationInfo(result.operation_info()) << flush;
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return true;
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}
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bool ScsictlCommands::EvaluateParams(string_view image_params, const string& key1, const string& key2)
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{
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if (const auto& components = Split(string(image_params), COMPONENT_SEPARATOR, 2); components.size() == 2) {
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SetParam(command, key1, components[0]);
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SetParam(command, key2, components[1]);
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return true;
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}
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return false;
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}
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