86 lines
2.9 KiB
C++
86 lines
2.9 KiB
C++
#include "prx/libc/include/GuestArena.hpp"
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#include "prx/libc/include/general/VabiMacros.hpp"
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#include "prx/libkernel/File/include/FileFlags.hpp"
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#include "prx/libkernel/Socket/include/SocketRuntime.hpp"
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#include <cerrno>
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#include <cstring>
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#include <random>
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#include <string>
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#ifdef _WIN32
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#include <windows.h>
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#include <io.h>
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extern "C" _invalid_parameter_handler _set_thread_local_invalid_parameter_handler(_invalid_parameter_handler);
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#else
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#include <unistd.h>
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#endif
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extern "C" {
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int* APS5_VABI __error_nid_postfix();
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int APS5_VABI open_nid_postfix(const char*, int, int);
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}
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namespace {
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constexpr char Characters[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
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int Failure(int error) {
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*__error_nid_postfix() = error;
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return -1;
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}
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#ifdef _WIN32
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void IgnoreInvalidParameter(const wchar_t*, const wchar_t*, const wchar_t*, unsigned int, std::uintptr_t) {}
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#endif
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}
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extern "C" int APS5_VABI mkstemp_nid_postfix(char* pattern) {
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if (!pattern) return Failure(14);
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const auto length = std::strlen(pattern);
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if (length == 0) return Failure(22);
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if (length >= 1024) return Failure(63);
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auto start = length;
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while (start > 0 && pattern[start - 1] == 'X') --start;
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const GuestArena::HostWrite destination(pattern + start, length - start);
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if (!destination.Open()) return Failure(14);
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if (start != length) {
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std::random_device random;
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std::uniform_int_distribution<unsigned int> character(0, sizeof(Characters) - 2);
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for (auto position = start; position < length; ++position)
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pattern[position] = Characters[character(random)];
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}
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const std::string initial(pattern + start, length - start);
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for (;;) {
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const int descriptor = open_nid_postfix(pattern, SCE_KERNEL_O_RDWR | SCE_KERNEL_O_CREAT | SCE_KERNEL_O_EXCL, 0600);
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if (descriptor >= 0 || *__error_nid_postfix() != 17) return descriptor;
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auto position = start;
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for (; position < length; ++position) {
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const auto index = std::strchr(Characters, pattern[position]) - Characters;
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pattern[position] = Characters[(index + 1) % (sizeof(Characters) - 1)];
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if (pattern[position] != initial[position - start]) break;
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}
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if (position == length) return -1;
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}
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}
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extern "C" int APS5_VABI isatty_nid_postfix(int descriptor) {
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if (GuestSocketIsOpen_nid_no_patch(descriptor)) {
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Failure(25);
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return 0;
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}
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#ifdef _WIN32
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const auto previous = _set_thread_local_invalid_parameter_handler(IgnoreInvalidParameter);
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const auto handle = reinterpret_cast<HANDLE>(::_get_osfhandle(descriptor));
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_set_thread_local_invalid_parameter_handler(previous);
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if (handle == INVALID_HANDLE_VALUE) {
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Failure(9);
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return 0;
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}
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DWORD mode = 0;
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if (::GetConsoleMode(handle, &mode)) return 1;
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Failure(25);
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#else
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if (::isatty(descriptor)) return 1;
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Failure(errno == EBADF ? 9 : 25);
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#endif
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return 0;
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}
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