RASCSI/cpp/rasctl/rasctl_commands.cpp

356 lines
8.3 KiB
C++

//---------------------------------------------------------------------------
//
// SCSI Target Emulator RaSCSI Reloaded
// for Raspberry Pi
//
// Copyright (C) 2021-2022 Uwe Seimet
//
//---------------------------------------------------------------------------
#include "shared/rasutil.h"
#include "shared/protobuf_util.h"
#include "shared/rascsi_exceptions.h"
#include "rasctl_commands.h"
#include <unistd.h>
#include <netdb.h>
#include <iostream>
#include <list>
using namespace std;
using namespace rascsi_interface;
using namespace ras_util;
using namespace protobuf_util;
bool RasctlCommands::Execute(const string& log_level, const string& default_folder, const string& reserved_ids,
const string& image_params, const string& filename)
{
switch(command.operation()) {
case LOG_LEVEL:
return CommandLogLevel(log_level);
case DEFAULT_FOLDER:
return CommandDefaultImageFolder(default_folder);
case RESERVE_IDS:
return CommandReserveIds(reserved_ids);
case CREATE_IMAGE:
return CommandCreateImage(image_params);
case DELETE_IMAGE:
return CommandDeleteImage(image_params);
case RENAME_IMAGE:
return CommandRenameImage(image_params);
case COPY_IMAGE:
return CommandCopyImage(image_params);
case DEVICES_INFO:
return CommandDeviceInfo();
case DEVICE_TYPES_INFO:
return CommandDeviceTypesInfo();
case VERSION_INFO:
return CommandVersionInfo();
case SERVER_INFO:
return CommandServerInfo();
case DEFAULT_IMAGE_FILES_INFO:
return CommandDefaultImageFilesInfo();
case IMAGE_FILE_INFO:
return CommandImageFileInfo(filename);
case NETWORK_INTERFACES_INFO:
return CommandNetworkInterfacesInfo();
case LOG_LEVEL_INFO:
return CommandLogLevelInfo();
case RESERVED_IDS_INFO:
return CommandReservedIdsInfo();
case MAPPING_INFO:
return CommandMappingInfo();
case OPERATION_INFO:
return CommandOperationInfo();
default:
return SendCommand();
}
return false;
}
bool RasctlCommands::SendCommand()
{
sockaddr_in server_addr = {};
if (!ResolveHostName(hostname, &server_addr)) {
throw io_exception("Can't resolve hostname '" + hostname + "'");
}
const int fd = socket(AF_INET, SOCK_STREAM, 0);
if (fd == -1) {
throw io_exception("Can't create socket: " + string(strerror(errno)));
}
server_addr.sin_port = htons(uint16_t(port));
if (connect(fd, (sockaddr *)&server_addr, sizeof(server_addr)) < 0) {
close(fd);
throw io_exception("Can't connect to rascsi on host '" + hostname + "', port " + to_string(port)
+ ": " + strerror(errno));
}
if (write(fd, "RASCSI", 6) != 6) {
close(fd);
throw io_exception("Can't write magic");
}
serializer.SerializeMessage(fd, command);
serializer.DeserializeMessage(fd, result);
close(fd);
if (!result.status()) {
throw io_exception(result.msg());
}
if (!result.msg().empty()) {
cout << result.msg() << endl;
}
return true;
}
bool RasctlCommands::CommandDevicesInfo()
{
SendCommand();
cout << rasctl_display.DisplayDevicesInfo(result.devices_info()) << flush;
return true;
}
bool RasctlCommands::CommandLogLevel(const string& log_level)
{
SetParam(command, "level", log_level);
return SendCommand();
}
bool RasctlCommands::CommandReserveIds(const string& reserved_ids)
{
SetParam(command, "ids", reserved_ids);
return SendCommand();
}
bool RasctlCommands::CommandCreateImage(const string& image_params)
{
if (const size_t separator_pos = image_params.find(COMPONENT_SEPARATOR); separator_pos != string::npos) {
SetParam(command, "file", string_view(image_params).substr(0, separator_pos));
SetParam(command, "size", string_view(image_params).substr(separator_pos + 1));
}
else {
cerr << "Error: Invalid file descriptor '" << image_params << "', format is NAME:SIZE" << endl;
return false;
}
SetParam(command, "read_only", "false");
return SendCommand();
}
bool RasctlCommands::CommandDeleteImage(const string& filename)
{
SetParam(command, "file", filename);
return SendCommand();
}
bool RasctlCommands::CommandRenameImage(const string& image_params)
{
if (const size_t separator_pos = image_params.find(COMPONENT_SEPARATOR); separator_pos != string::npos) {
SetParam(command, "from", string_view(image_params).substr(0, separator_pos));
SetParam(command, "to", string_view(image_params).substr(separator_pos + 1));
}
else {
cerr << "Error: Invalid file descriptor '" << image_params << "', format is CURRENT_NAME:NEW_NAME" << endl;
return false;
}
return SendCommand();
}
bool RasctlCommands::CommandCopyImage(const string& image_params)
{
if (const size_t separator_pos = image_params.find(COMPONENT_SEPARATOR); separator_pos != string::npos) {
SetParam(command, "from", string_view(image_params).substr(0, separator_pos));
SetParam(command, "to", string_view(image_params).substr(separator_pos + 1));
}
else {
cerr << "Error: Invalid file descriptor '" << image_params << "', format is CURRENT_NAME:NEW_NAME" << endl;
return false;
}
return SendCommand();
}
bool RasctlCommands::CommandDefaultImageFolder(const string& folder)
{
SetParam(command, "folder", folder);
return SendCommand();
}
bool RasctlCommands::CommandDeviceInfo()
{
SendCommand();
for (const auto& device : result.devices_info().devices()) {
cout << rasctl_display.DisplayDeviceInfo(device);
}
cout << flush;
return true;
}
bool RasctlCommands::CommandDeviceTypesInfo()
{
SendCommand();
cout << rasctl_display.DisplayDeviceTypesInfo(result.device_types_info()) << flush;
return true;
}
bool RasctlCommands::CommandVersionInfo()
{
SendCommand();
cout << rasctl_display.DisplayVersionInfo(result.version_info()) << flush;
return true;
}
bool RasctlCommands::CommandServerInfo()
{
SendCommand();
PbServerInfo server_info = result.server_info();
cout << rasctl_display.DisplayVersionInfo(server_info.version_info());
cout << rasctl_display.DisplayLogLevelInfo(server_info.log_level_info());
cout << rasctl_display.DisplayImageFilesInfo(server_info.image_files_info());
cout << rasctl_display.DisplayMappingInfo(server_info.mapping_info());
cout << rasctl_display.DisplayNetworkInterfaces(server_info.network_interfaces_info());
cout << rasctl_display.DisplayDeviceTypesInfo(server_info.device_types_info());
cout << rasctl_display.DisplayReservedIdsInfo(server_info.reserved_ids_info());
cout << rasctl_display.DisplayOperationInfo(server_info.operation_info());
if (server_info.devices_info().devices_size()) {
list<PbDevice> sorted_devices = { server_info.devices_info().devices().begin(), server_info.devices_info().devices().end() };
sorted_devices.sort([](const auto& a, const auto& b) { return a.id() < b.id() || a.unit() < b.unit(); });
cout << "Attached devices:\n";
for (const auto& device : sorted_devices) {
cout << rasctl_display.DisplayDeviceInfo(device);
}
}
cout << flush;
return true;
}
bool RasctlCommands::CommandDefaultImageFilesInfo()
{
SendCommand();
cout << rasctl_display.DisplayImageFilesInfo(result.image_files_info()) << flush;
return true;
}
bool RasctlCommands::CommandImageFileInfo(const string& filename)
{
SetParam(command, "file", filename);
SendCommand();
cout << rasctl_display.DisplayImageFile(result.image_file_info()) << flush;
return true;
}
bool RasctlCommands::CommandNetworkInterfacesInfo()
{
SendCommand();
cout << rasctl_display.DisplayNetworkInterfaces(result.network_interfaces_info()) << flush;
return true;
}
bool RasctlCommands::CommandLogLevelInfo()
{
SendCommand();
cout << rasctl_display.DisplayLogLevelInfo(result.log_level_info()) << flush;
return true;
}
bool RasctlCommands::CommandReservedIdsInfo()
{
SendCommand();
cout << rasctl_display.DisplayReservedIdsInfo(result.reserved_ids_info()) << flush;
return true;
}
bool RasctlCommands::CommandMappingInfo()
{
SendCommand();
cout << rasctl_display.DisplayMappingInfo(result.mapping_info()) << flush;
return true;
}
bool RasctlCommands::CommandOperationInfo()
{
SendCommand();
cout << rasctl_display.DisplayOperationInfo(result.operation_info()) << flush;
return true;
}
bool RasctlCommands::ResolveHostName(const string& host, sockaddr_in *addr)
{
addrinfo hints = {};
hints.ai_family = AF_INET;
hints.ai_socktype = SOCK_STREAM;
if (addrinfo *result; !getaddrinfo(host.c_str(), nullptr, &hints, &result)) {
*addr = *(sockaddr_in *)(result->ai_addr);
freeaddrinfo(result);
return true;
}
return false;
}