Lightemerald/windows-user-space-emulator
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remove regex

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This commit is contained in:
ahm3dgg
2026-01-14 08:48:09 +02:00
parent b8c10e0961 608a0cf0ec
commit 3064f3c1b7
13 changed files with 348 additions and 100 deletions
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73
src/windows-emulator/process_context.cpp
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@@ -3,10 +3,10 @@
#include "emulator_utils.hpp"
#include "windows_emulator.hpp"
#include "version/windows_version_manager.hpp"
#include <utils/io.hpp>
#include <utils/buffer_accessor.hpp>
#include <regex>
namespace
@@ -181,43 +181,15 @@ namespace
return env_map;
}
uint32_t read_windows_build(registry_manager& registry)
{
const auto key = registry.get_key({R"(\Registry\Machine\Software\Microsoft\Windows NT\CurrentVersion)"});
if (!key)
{
return 0;
}
for (size_t i = 0; const auto value = registry.get_value(*key, i); ++i)
{
if (value->type != REG_SZ)
{
continue;
}
if (value->name == "CurrentBuildNumber" || value->name == "CurrentBuild")
{
const auto* s = reinterpret_cast<const char16_t*>(value->data.data());
return static_cast<uint32_t>(std::strtoul(u16_to_u8(s).c_str(), nullptr, 10));
}
}
return 0;
}
}
void process_context::setup(x86_64_emulator& emu, memory_manager& memory, registry_manager& registry, const file_system& file_system,
const application_settings& app_settings, const mapped_module& executable, const mapped_module& ntdll,
const apiset::container& apiset_container, const mapped_module* ntdll32)
void process_context::setup(x86_64_emulator& emu, memory_manager& memory, registry_manager& registry, file_system& file_system,
windows_version_manager& version, const application_settings& app_settings, const mapped_module& executable,
const mapped_module& ntdll, const apiset::container& apiset_container, const mapped_module* ntdll32)
{
this->windows_build_number = read_windows_build(registry);
setup_gdt(emu, memory);
this->kusd.setup();
this->kusd.setup(version);
this->base_allocator = create_allocator(memory, PEB_SEGMENT_SIZE, this->is_wow64_process);
auto& allocator = this->base_allocator;
@@ -309,8 +281,9 @@ void process_context::setup(x86_64_emulator& emu, memory_manager& memory, regist
p.ImageSubsystemMajorVersion = 6;
p.OSPlatformId = 2;
p.OSMajorVersion = 0x0000000a;
p.OSBuildNumber = 0x00006c51;
p.OSMajorVersion = version.get_major_version();
p.OSMinorVersion = version.get_minor_version();
p.OSBuildNumber = static_cast<USHORT>(version.get_windows_build_number());
// p.AnsiCodePageData = allocator.reserve<CPTABLEINFO>().value();
// p.OemCodePageData = allocator.reserve<CPTABLEINFO>().value();
@@ -400,8 +373,9 @@ void process_context::setup(x86_64_emulator& emu, memory_manager& memory, regist
p32.ImageSubsystemMajorVersion = 6;
p32.OSPlatformId = 2;
p32.OSMajorVersion = 0x0a;
p32.OSBuildNumber = 0x6c51;
p32.OSMajorVersion = version.get_major_version();
p32.OSMinorVersion = version.get_minor_version();
p32.OSBuildNumber = static_cast<USHORT>(version.get_windows_build_number());
// Initialize NLS tables for 32-bit processes
// These need to be in 32-bit addressable space
@@ -437,7 +411,7 @@ void process_context::setup(x86_64_emulator& emu, memory_manager& memory, regist
monitor.hmon = h.bits;
monitor.rcMonitor = {.left = 0, .top = 0, .right = 1920, .bottom = 1080};
monitor.rcWork = monitor.rcMonitor;
if (this->is_older_windows_build())
if (version.is_build_before(26040))
{
monitor.b20.monitorDpi = 96;
monitor.b20.nativeDpi = monitor.b20.monitorDpi;
@@ -533,7 +507,6 @@ void process_context::serialize(utils::buffer_serializer& buffer) const
buffer.write(this->kusd);
buffer.write(this->is_wow64_process);
buffer.write(this->windows_build_number);
buffer.write(this->ntdll_image_base);
buffer.write(this->ldr_initialize_thunk);
buffer.write(this->rtl_user_thread_start);
@@ -587,7 +560,6 @@ void process_context::deserialize(utils::buffer_deserializer& buffer)
buffer.read(this->kusd);
buffer.read(this->is_wow64_process);
buffer.read(this->windows_build_number);
buffer.read(this->ntdll_image_base);
buffer.read(this->ldr_initialize_thunk);
buffer.read(this->rtl_user_thread_start);
@@ -777,8 +749,6 @@ void process_context::build_knowndlls_section_table(registry_manager& registry,
std::set<std::u16string> visisted;
std::queue<std::u16string> q;
static std::regex apiset_pattern(R"((api|ext)-[a-zA-Z0-9-]+-l\d+-\d+-\d+\.dll)", std::regex::icase);
if (is_32bit)
{
system_root_path = "C:\\Windows\\SysWOW64";
@@ -859,16 +829,15 @@ void process_context::build_knowndlls_section_table(registry_manager& registry,
break;
}
auto known_dll_dep_name_8 =
buffer.as_string(static_cast<size_t>(rva_to_file_offset(import_directory_vbase, import_directory_rbase, descriptor.Name)));
auto known_dll_dep_name_16 = u8_to_u16(known_dll_dep_name_8);
utils::string::to_lower_inplace(known_dll_dep_name_16);
auto known_dll_dep_name = u8_to_u16(
buffer.as_string(static_cast<size_t>(rva_to_file_offset(import_directory_vbase, import_directory_rbase, descriptor.Name))));
utils::string::to_lower_inplace(known_dll_dep_name);
if (std::regex_match(known_dll_dep_name_8, apiset_pattern))
if (known_dll_dep_name.starts_with(u"api-") || known_dll_dep_name.starts_with(u"ext-"))
{
if (auto apiset_entry = apiset.find(known_dll_dep_name_16); apiset_entry != apiset.end())
if (auto apiset_entry = apiset.find(known_dll_dep_name); apiset_entry != apiset.end())
{
known_dll_dep_name_16 = apiset_entry->second;
known_dll_dep_name = apiset_entry->second;
}
else
{
@@ -876,10 +845,10 @@ void process_context::build_knowndlls_section_table(registry_manager& registry,
}
}
if (!visisted.contains(known_dll_dep_name_16))
if (!visisted.contains(known_dll_dep_name))
{
q.push(known_dll_dep_name_16);
visisted.insert(known_dll_dep_name_16);
q.push(known_dll_dep_name);
visisted.insert(known_dll_dep_name);
}
}
}