hac2l/source/hactool_options.cpp
2022-03-13 14:01:49 -07:00

336 lines
16 KiB
C++

/*
* 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 <stratosphere.hpp>
#include "hactool_options.hpp"
namespace ams::fssrv::impl {
const char *GetWorkingDirectoryPath();
}
namespace ams::hactool {
namespace {
bool CreateFilePath(const char **out, const char *argument) {
/* Allocate buffer for path. */
const auto dst_size = std::strlen(argument) + fs::EntryNameLengthMax + 1;
char *dst = static_cast<char *>(std::malloc(dst_size));
ON_SCOPE_EXIT { std::free(dst); };
if (dst == nullptr) {
printf("Error: failed to allocate memory to hold path (%s)\n", argument);
return false;
}
/* Print to path. */
if (fs::IsPathAbsolute(argument)) {
util::SNPrintf(dst, dst_size, "%s", argument);
} else {
util::SNPrintf(dst, dst_size, "%s%s", fssrv::impl::GetWorkingDirectoryPath(), argument);
}
/* Normalize path. */
char *normalized = static_cast<char *>(std::malloc(dst_size));
if (normalized == nullptr) {
printf("Error: failed to allocate memory to hold path (%s)\n", argument);
return false;
}
/* Check that the path is valid. */
fs::PathFlags flags;
flags.AllowWindowsPath();
if (const auto res = fs::PathFormatter::Normalize(normalized, dst_size, dst, std::strlen(dst) + 1, flags); R_FAILED(res)) {
printf("Error: failed to normalize path (%s): 2%03d-%04d\n", dst, res.GetModule(), res.GetDescription());
return false;
}
/* Set output. */
*out = normalized;
return true;
}
using OptionHandlerFunction = util::IFunction<bool(Options &, const char *)>;
struct OptionHandler {
char short_name;
bool takes_arg;
const char *name;
u8 handler_storage[0x20];
const OptionHandlerFunction &handler;
OptionHandler(const char *n, char sn, bool ta, auto f) : short_name(sn), takes_arg(ta), name(n), handler(*reinterpret_cast<const decltype(OptionHandlerFunction::Make(f)) *>(handler_storage)) {
using FunctionType = decltype(OptionHandlerFunction::Make(f));
static_assert(sizeof(this->handler_storage) >= sizeof(FunctionType));
std::construct_at(reinterpret_cast<FunctionType *>(this->handler_storage), OptionHandlerFunction::Make(f));
}
};
template<typename T>
concept NotCharacterOverloadHelper = !std::convertible_to<char, T>;
OptionHandler MakeOptionHandler(const char *s, char sn, auto f) {
if constexpr (requires { f(std::declval<Options &>(), std::declval<const char *>()); }) {
if constexpr (std::convertible_to<decltype(f(std::declval<Options &>(), std::declval<const char *>())), bool>) {
return OptionHandler(s, sn, true, f);
} else {
return OptionHandler(s, sn, true, [&] (Options &options, const char *arg) -> bool { f(options, arg); return true; });
}
} else {
if constexpr (std::convertible_to<decltype(f(std::declval<Options &>())), bool>) {
return OptionHandler(s, sn, false, [&] (Options &options, const char *) -> bool { return f(options); });
} else {
return OptionHandler(s, sn, false, [&] (Options &options, const char *) -> bool { f(options); return true; });
}
}
}
OptionHandler MakeOptionHandler(const char *s, NotCharacterOverloadHelper auto f) {
return MakeOptionHandler(s, 0, f);
}
const OptionHandler OptionHandlers[] = {
MakeOptionHandler("intype", 't', [] (Options &options, const char *arg) {
if (std::strcmp(arg, "npdm") == 0) {
options.file_type = FileType::Npdm;
}
}),
MakeOptionHandler("dev", 'd', [] (Options &options) { options.dev = true; }),
MakeOptionHandler("verify", 'y', [] (Options &options) { options.verify = true; }),
MakeOptionHandler("raw", 'r', [] (Options &options) { options.raw = true; }),
MakeOptionHandler("enablehash", 'h', [] (Options &options) { options.enable_hash = true; }),
MakeOptionHandler("disablekeywarns", [] (Options &options) { options.disable_key_warns = true; }),
MakeOptionHandler("keyset", 'k', [] (Options &options, const char *arg) { return CreateFilePath(std::addressof(options.key_file_path), arg); }),
MakeOptionHandler("titlekeys", [] (Options &options, const char *arg) { return CreateFilePath(std::addressof(options.titlekey_path), arg); }),
MakeOptionHandler("consolekeys", [] (Options &options, const char *arg) { return CreateFilePath(std::addressof(options.consolekey_path), arg); }),
MakeOptionHandler("section0", [] (Options &options, const char *arg) { return CreateFilePath(std::addressof(options.section_out_file_paths[0]), arg); }),
MakeOptionHandler("section1", [] (Options &options, const char *arg) { return CreateFilePath(std::addressof(options.section_out_file_paths[1]), arg); }),
MakeOptionHandler("section2", [] (Options &options, const char *arg) { return CreateFilePath(std::addressof(options.section_out_file_paths[2]), arg); }),
MakeOptionHandler("section3", [] (Options &options, const char *arg) { return CreateFilePath(std::addressof(options.section_out_file_paths[3]), arg); }),
MakeOptionHandler("section0dir", [] (Options &options, const char *arg) { return CreateFilePath(std::addressof(options.section_out_dir_paths[0]), arg); }),
MakeOptionHandler("section1dir", [] (Options &options, const char *arg) { return CreateFilePath(std::addressof(options.section_out_dir_paths[1]), arg); }),
MakeOptionHandler("section2dir", [] (Options &options, const char *arg) { return CreateFilePath(std::addressof(options.section_out_dir_paths[2]), arg); }),
MakeOptionHandler("section3dir", [] (Options &options, const char *arg) { return CreateFilePath(std::addressof(options.section_out_dir_paths[3]), arg); }),
MakeOptionHandler("header", [] (Options &options, const char *arg) { return CreateFilePath(std::addressof(options.header_out_path), arg); }),
MakeOptionHandler("exefs", [] (Options &options, const char *arg) { return CreateFilePath(std::addressof(options.exefs_out_file_path), arg); }),
MakeOptionHandler("romfs", [] (Options &options, const char *arg) { return CreateFilePath(std::addressof(options.romfs_out_file_path), arg); }),
MakeOptionHandler("exefsdir", [] (Options &options, const char *arg) { return CreateFilePath(std::addressof(options.exefs_out_dir_path), arg); }),
MakeOptionHandler("romfsdir", [] (Options &options, const char *arg) { return CreateFilePath(std::addressof(options.romfs_out_dir_path), arg); }),
MakeOptionHandler("outdir", [] (Options &options, const char *arg) { return CreateFilePath(std::addressof(options.default_out_dir_path), arg); }),
MakeOptionHandler("outfile", [] (Options &options, const char *arg) { return CreateFilePath(std::addressof(options.default_out_file_path), arg); }),
MakeOptionHandler("plaintext", [] (Options &options, const char *arg) { return CreateFilePath(std::addressof(options.plaintext_out_path), arg); }),
MakeOptionHandler("ciphertext", [] (Options &options, const char *arg) { return CreateFilePath(std::addressof(options.ciphertext_out_path), arg); }),
MakeOptionHandler("listromfs", [] (Options &options) { options.list_romfs = true; }),
};
}
void PrintUsage() {
printf("hac2l (c) SciresM/Atmosphere-NX\n");
printf("\n");
printf("Usage: hac2l [options...] path\n");
printf("Full usage print remains TODO\n");
}
const char *GetKeysFilePath(const char *fn) {
/* Declare path buffers. */
fs::Path path;
/* Try to find an environment variable. */
char *home = getenv("HOME");
if (home == nullptr) {
home = getenv("USERPROFILE");
}
if (home != nullptr) {
if (!fs::IsPathAbsolute(home)) {
printf("Warning: home path (%s) is not absolute, ignoring.\n", home);
return nullptr;
}
if (const auto res = path.Initialize(home); R_FAILED(res)) {
printf("Warning: Failed to initialize home path (%s): 2%03d-%04d\n", home, res.GetModule(), res.GetDescription());
return nullptr;
}
/* Normalize the path. */
fs::PathFlags flags;
flags.AllowWindowsPath();
if (const auto res = path.Normalize(flags); R_FAILED(res)) {
printf("Warning: Failed to normalize home path (%s): 2%03d-%04d\n", home, res.GetModule(), res.GetDescription());
return nullptr;
}
/* Append .switch. */
if (const auto res = path.AppendChild(".switch"); R_FAILED(res)) {
printf("Warning: failed to append .switch to path (%s): 2%03d-%04d\n", path.GetString(), res.GetModule(), res.GetDescription());
return nullptr;
}
/* Append fn. */
if (const auto res = path.AppendChild(fn); R_FAILED(res)) {
printf("Warning: failed to append %s to path (%s): 2%03d-%04d\n", fn, path.GetString(), res.GetModule(), res.GetDescription());
return nullptr;
}
}
/* If the path isn't empty, check if the file exists. */
if (!path.IsEmpty()) {
bool has_file = false;
if (const auto res = fs::HasFile(std::addressof(has_file), path.GetString()); R_FAILED(res)) {
printf("Warning: failed to check if path exists (%s): 2%03d-%04d\n", path.GetString(), res.GetModule(), res.GetDescription());
} else if (has_file) {
return ::strdup(path.GetString());
}
}
/* We couldn't use {home}/.switch/{fn}. Try using xdg home. */
char *xdg = getenv("XDG_CONFIG_HOME");
if (xdg != nullptr) {
if (!fs::IsPathAbsolute(xdg)) {
printf("Warning: xdg path (%s) is not absolute, ignoring.\n", xdg);
return nullptr;
}
if (const auto res = path.Initialize(xdg); R_FAILED(res)) {
printf("Warning: Failed to initialize xdg path (%s): 2%03d-%04d\n", xdg, res.GetModule(), res.GetDescription());
return nullptr;
}
/* Normalize the path. */
fs::PathFlags flags;
flags.AllowWindowsPath();
if (const auto res = path.Normalize(flags); R_FAILED(res)) {
printf("Warning: Failed to normalize xdg path (%s): 2%03d-%04d\n", xdg, res.GetModule(), res.GetDescription());
return nullptr;
}
} else if (!path.IsEmpty()) {
/* Path is already initialized with <home>/.switch/<fn>, try <home>/.config/switch/<fn>. */
R_ABORT_UNLESS(path.RemoveChild());
R_ABORT_UNLESS(path.RemoveChild());
/* Append .config. */
if (const auto res = path.AppendChild(".config"); R_FAILED(res)) {
printf("Warning: failed to append .config to path (%s): 2%03d-%04d\n", path.GetString(), res.GetModule(), res.GetDescription());
return nullptr;
}
}
/* If the path isn't empty, format the remaining path segments and check if the file exists. */
if (!path.IsEmpty()) {
/* Append switch. */
if (const auto res = path.AppendChild("switch"); R_FAILED(res)) {
printf("Warning: failed to append switch to path (%s): 2%03d-%04d\n", path.GetString(), res.GetModule(), res.GetDescription());
return nullptr;
}
/* Append fn. */
if (const auto res = path.AppendChild(fn); R_FAILED(res)) {
printf("Warning: failed to append %s to path (%s): 2%03d-%04d\n", fn, path.GetString(), res.GetModule(), res.GetDescription());
return nullptr;
}
bool has_file = false;
if (const auto res = fs::HasFile(std::addressof(has_file), path.GetString()); R_FAILED(res)) {
printf("Warning: failed to check if path exists (%s): 2%03d-%04d\n", path.GetString(), res.GetModule(), res.GetDescription());
} else if (has_file) {
return ::strdup(path.GetString());
}
}
/* We couldn't find a path. */
return nullptr;
}
Options ParseOptionsFromCommandLine() {
/* Create default options. */
Options options{};
/* Get argc/argv. */
const auto argc = os::GetHostArgc();
const auto argv = os::GetHostArgv();
/* Parse all arguments. */
for (auto i = 1; i < argc; ++i) {
/* Get the current argument length. */
const auto *arg = argv[i];
const auto arg_len = std::strlen(arg);
bool success = false;
if (arg[0] == '-' && arg[1] != '-') {
for (const auto &o : OptionHandlers) {
if (arg[1] != o.short_name) {
continue;
}
if (o.takes_arg) {
if (arg_len > 2) {
success = o.handler(options, arg + 2);
} else {
++i;
success = i < argc && o.handler(options, argv[i]);
}
} else {
success = o.handler(options, nullptr);
}
break;
}
} else if (arg[0] == '-' && arg[1] == '-') {
for (const auto &o : OptionHandlers) {
const auto o_len = std::strlen(o.name);
if (arg_len < o_len || std::memcmp(arg, o.name, o_len) != 0) {
continue;
}
if (o.takes_arg) {
if (arg[o_len] == '=') {
success = o.handler(options, arg + o_len + 1);
} else {
++i;
success = i < argc && o.handler(options, argv[i]);
}
} else {
success = o.handler(options, nullptr);
}
break;
}
} else if (options.in_file_path == nullptr) {
success = CreateFilePath(std::addressof(options.in_file_path), arg);
}
if (!success) {
fprintf(stderr, "[Warning]: An error occurred while parsing option (%s)\n", arg);
return options;
}
}
/* Try to ensure key files are valid. */
if (options.key_file_path == nullptr) {
options.key_file_path = GetKeysFilePath(options.dev ? "dev.keys" : "prod.keys");
}
if (options.titlekey_path == nullptr) {
options.titlekey_path = GetKeysFilePath("title.keys");
}
if (options.consolekey_path == nullptr) {
options.consolekey_path = GetKeysFilePath("console.keys");
}
/* If we have an input file, we're valid. */
options.valid = options.in_file_path != nullptr;
return options;
}
}