86 lines
2.3 KiB
C++
86 lines
2.3 KiB
C++
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#include "minidump.hpp"
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#include <DbgHelp.h>
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#pragma comment(lib, "dbghelp.lib")
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namespace exception
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{
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namespace
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{
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constexpr MINIDUMP_TYPE get_minidump_type()
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{
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constexpr auto type = MiniDumpIgnoreInaccessibleMemory //
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| MiniDumpWithHandleData //
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| MiniDumpScanMemory //
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| MiniDumpWithProcessThreadData //
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| MiniDumpWithFullMemoryInfo //
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| MiniDumpWithThreadInfo //
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| MiniDumpWithUnloadedModules;
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return static_cast<MINIDUMP_TYPE>(type);
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}
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std::string get_temp_filename()
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{
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char filename[MAX_PATH] = {0};
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char pathname[MAX_PATH] = {0};
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GetTempPathA(sizeof(pathname), pathname);
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GetTempFileNameA(pathname, "boiii-", 0, filename);
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return filename;
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}
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HANDLE write_dump_to_temp_file(const LPEXCEPTION_POINTERS exceptioninfo)
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{
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MINIDUMP_EXCEPTION_INFORMATION minidump_exception_info = {GetCurrentThreadId(), exceptioninfo, FALSE};
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auto* const file_handle = CreateFileA(get_temp_filename().data(), GENERIC_WRITE | GENERIC_READ,
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FILE_SHARE_READ | FILE_SHARE_WRITE, nullptr, OPEN_ALWAYS,
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FILE_ATTRIBUTE_TEMPORARY | FILE_FLAG_DELETE_ON_CLOSE,
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nullptr);
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if (!MiniDumpWriteDump(GetCurrentProcess(), GetCurrentProcessId(), file_handle, get_minidump_type(),
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&minidump_exception_info,
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nullptr,
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nullptr))
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{
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MessageBoxA(nullptr, "There was an error creating the minidump! Hit OK to close the program.",
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"Minidump Error", MB_OK | MB_ICONERROR);
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TerminateProcess(GetCurrentProcess(), 123);
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}
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return file_handle;
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}
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std::string read_file(const HANDLE file_handle)
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{
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FlushFileBuffers(file_handle);
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SetFilePointer(file_handle, 0, nullptr, FILE_BEGIN);
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std::string buffer{};
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DWORD bytes_read = 0;
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char temp_bytes[0x2000];
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do
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{
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if (!ReadFile(file_handle, temp_bytes, sizeof(temp_bytes), &bytes_read, nullptr))
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{
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return {};
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}
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buffer.append(temp_bytes, bytes_read);
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}
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while (bytes_read == sizeof(temp_bytes));
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return buffer;
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}
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}
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std::string create_minidump(const LPEXCEPTION_POINTERS exceptioninfo)
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{
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const utils::nt::handle file_handle = write_dump_to_temp_file(exceptioninfo);
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return read_file(file_handle);
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}
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}
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