1489 lines
33 KiB
C++
1489 lines
33 KiB
C++
/*
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* This file Copyright (C) 2013-2017 Mnemosyne LLC
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*
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* It may be used under the GNU GPL versions 2 or 3
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* or any future license endorsed by Mnemosyne LLC.
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*
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*/
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#include <ctype.h> /* isalpha() */
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#include <shlobj.h> /* SHCreateDirectoryEx() */
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#include <winioctl.h> /* FSCTL_SET_SPARSE */
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#include "transmission.h"
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#include "crypto-utils.h" /* tr_rand_int() */
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#include "error.h"
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#include "file.h"
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#include "tr-assert.h"
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#include "utils.h"
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#ifndef MAXSIZE_T
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#define MAXSIZE_T ((SIZE_T) ~((SIZE_T)0))
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#endif
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/* MSDN (http://msdn.microsoft.com/en-us/library/2k2xf226.aspx) only mentions
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"i64" suffix for C code, but no warning is issued */
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#define DELTA_EPOCH_IN_MICROSECS 11644473600000000ULL
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struct tr_sys_dir_win32
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{
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wchar_t* pattern;
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HANDLE find_handle;
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WIN32_FIND_DATAW find_data;
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char* utf8_name;
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};
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static wchar_t const native_local_path_prefix[] = { '\\', '\\', '?', '\\' };
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static wchar_t const native_unc_path_prefix[] = { '\\', '\\', '?', '\\', 'U', 'N', 'C', '\\' };
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static void set_system_error(tr_error** error, DWORD code)
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{
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char* message;
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if (error == nullptr)
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{
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return;
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}
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message = tr_win32_format_message(code);
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if (message != nullptr)
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{
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tr_error_set_literal(error, code, message);
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tr_free(message);
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}
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else
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{
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tr_error_set(error, code, "Unknown error: 0x%08lx", code);
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}
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}
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static void set_system_error_if_file_found(tr_error** error, DWORD code)
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{
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if (code != ERROR_FILE_NOT_FOUND && code != ERROR_PATH_NOT_FOUND && code != ERROR_NO_MORE_FILES)
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{
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set_system_error(error, code);
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}
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}
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static time_t filetime_to_unix_time(FILETIME const* t)
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{
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TR_ASSERT(t != nullptr);
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uint64_t tmp = 0;
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tmp |= t->dwHighDateTime;
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tmp <<= 32;
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tmp |= t->dwLowDateTime;
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tmp /= 10; /* to microseconds */
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tmp -= DELTA_EPOCH_IN_MICROSECS;
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return tmp / 1000000UL;
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}
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static void stat_to_sys_path_info(
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DWORD attributes,
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DWORD size_low,
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DWORD size_high,
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FILETIME const* mtime,
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tr_sys_path_info* info)
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{
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TR_ASSERT(mtime != nullptr);
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TR_ASSERT(info != nullptr);
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if ((attributes & FILE_ATTRIBUTE_DIRECTORY) != 0)
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{
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info->type = TR_SYS_PATH_IS_DIRECTORY;
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}
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else if ((attributes & (FILE_ATTRIBUTE_DEVICE | FILE_ATTRIBUTE_REPARSE_POINT | FILE_ATTRIBUTE_VIRTUAL)) == 0)
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{
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info->type = TR_SYS_PATH_IS_FILE;
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}
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else
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{
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info->type = TR_SYS_PATH_IS_OTHER;
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}
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info->size = size_high;
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info->size <<= 32;
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info->size |= size_low;
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info->last_modified_at = filetime_to_unix_time(mtime);
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}
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static inline bool is_slash(char c)
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{
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return c == '\\' || c == '/';
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}
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static inline bool is_unc_path(char const* path)
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{
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return is_slash(path[0]) && path[1] == path[0];
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}
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static bool is_valid_path(char const* path)
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{
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if (is_unc_path(path))
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{
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if (path[2] != '\0' && !isalnum(path[2]))
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{
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return false;
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}
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}
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else
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{
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char const* colon_pos = strchr(path, ':');
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if (colon_pos != nullptr)
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{
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if (colon_pos != path + 1 || !isalpha(path[0]))
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{
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return false;
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}
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path += 2;
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}
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}
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return strpbrk(path, "<>:\"|?*") == nullptr;
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}
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static wchar_t* path_to_native_path_ex(char const* path, int extra_chars_after, int* real_result_size)
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{
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/* Extending maximum path length limit up to ~32K. See "Naming Files, Paths, and Namespaces"
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(https://msdn.microsoft.com/en-us/library/windows/desktop/aa365247.aspx) for more info */
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bool const is_relative = tr_sys_path_is_relative(path);
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bool const is_unc = is_unc_path(path);
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/* `-2` for UNC since we overwrite existing prefix slashes */
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int const extra_chars_before = is_relative ?
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0 :
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(is_unc ? TR_N_ELEMENTS(native_unc_path_prefix) - 2 : TR_N_ELEMENTS(native_local_path_prefix));
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/* TODO (?): TR_ASSERT(!is_relative); */
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wchar_t* const wide_path = tr_win32_utf8_to_native_ex(path, -1, extra_chars_before, extra_chars_after, real_result_size);
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if (wide_path == nullptr)
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{
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return nullptr;
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}
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/* Relative paths cannot be used with "\\?\" prefixes. This also means that relative paths are
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limited to ~260 chars... but we should rarely work with relative paths in the first place */
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if (!is_relative)
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{
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if (is_unc)
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{
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/* UNC path: "\\server\share" -> "\\?\UNC\server\share" */
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memcpy(wide_path, native_unc_path_prefix, sizeof(native_unc_path_prefix));
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}
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else
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{
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/* Local path: "C:" -> "\\?\C:" */
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memcpy(wide_path, native_local_path_prefix, sizeof(native_local_path_prefix));
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}
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}
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/* Automatic '/' to '\' conversion is disabled for "\\?\"-prefixed paths */
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wchar_t* p = wide_path + extra_chars_before;
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while ((p = wcschr(p, L'/')) != nullptr)
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{
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*p++ = L'\\';
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}
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if (real_result_size != nullptr)
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{
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*real_result_size += extra_chars_before;
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}
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return wide_path;
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}
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static wchar_t* path_to_native_path(char const* path)
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{
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return path_to_native_path_ex(path, 0, nullptr);
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}
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static char* native_path_to_path(wchar_t const* wide_path)
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{
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if (wide_path == nullptr)
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{
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return nullptr;
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}
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bool const is_unc = wcsncmp(wide_path, native_unc_path_prefix, TR_N_ELEMENTS(native_unc_path_prefix)) == 0;
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bool const is_local = !is_unc && wcsncmp(wide_path, native_local_path_prefix, TR_N_ELEMENTS(native_local_path_prefix)) == 0;
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size_t const skip_chars = is_unc ? TR_N_ELEMENTS(native_unc_path_prefix) :
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(is_local ? TR_N_ELEMENTS(native_local_path_prefix) : 0);
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char* const path = tr_win32_native_to_utf8_ex(wide_path + skip_chars, -1, is_unc ? 2 : 0, 0, nullptr);
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if (is_unc && path != nullptr)
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{
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path[0] = '\\';
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path[1] = '\\';
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}
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return path;
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}
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static tr_sys_file_t open_file(char const* path, DWORD access, DWORD disposition, DWORD flags, tr_error** error)
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{
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TR_ASSERT(path != nullptr);
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tr_sys_file_t ret = TR_BAD_SYS_FILE;
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wchar_t* wide_path = path_to_native_path(path);
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if (wide_path != nullptr)
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{
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ret = CreateFileW(
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wide_path,
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access,
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FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
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nullptr,
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disposition,
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flags,
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nullptr);
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}
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if (ret == TR_BAD_SYS_FILE)
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{
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set_system_error(error, GetLastError());
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}
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tr_free(wide_path);
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return ret;
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}
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static bool create_dir(char const* path, int flags, int permissions, bool okay_if_exists, tr_error** error)
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{
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TR_UNUSED(permissions);
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TR_ASSERT(path != nullptr);
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bool ret;
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DWORD error_code = ERROR_SUCCESS;
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wchar_t* wide_path = path_to_native_path(path);
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if ((flags & TR_SYS_DIR_CREATE_PARENTS) != 0)
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{
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error_code = SHCreateDirectoryExW(nullptr, wide_path, nullptr);
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ret = error_code == ERROR_SUCCESS;
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}
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else
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{
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ret = CreateDirectoryW(wide_path, nullptr);
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if (!ret)
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{
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error_code = GetLastError();
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}
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}
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if (!ret && error_code == ERROR_ALREADY_EXISTS && okay_if_exists)
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{
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DWORD const attributes = GetFileAttributesW(wide_path);
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if (attributes != INVALID_FILE_ATTRIBUTES && (attributes & FILE_ATTRIBUTE_DIRECTORY) != 0)
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{
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ret = true;
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}
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}
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if (!ret)
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{
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set_system_error(error, error_code);
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}
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tr_free(wide_path);
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return ret;
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}
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static void create_temp_path(
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char* path_template,
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void (*callback)(char const* path, void* param, tr_error** error),
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void* callback_param,
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tr_error** error)
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{
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TR_ASSERT(path_template != nullptr);
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TR_ASSERT(callback != nullptr);
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char* path = tr_strdup(path_template);
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size_t path_size = strlen(path);
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TR_ASSERT(path_size > 0);
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tr_error* my_error = nullptr;
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for (int attempt = 0; attempt < 100; ++attempt)
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{
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size_t i = path_size;
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while (i > 0 && path_template[i - 1] == 'X')
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{
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int const c = tr_rand_int(26 + 26 + 10);
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path[i - 1] = c < 26 ? c + 'A' : (c < 26 + 26 ? (c - 26) + 'a' : (c - 26 - 26) + '0');
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--i;
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}
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TR_ASSERT(path_size >= i + 6);
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tr_error_clear(&my_error);
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(*callback)(path, callback_param, &my_error);
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if (my_error == nullptr)
|
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{
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break;
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}
|
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}
|
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|
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if (my_error != nullptr)
|
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{
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tr_error_propagate(error, &my_error);
|
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}
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else
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{
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memcpy(path_template, path, path_size);
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}
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|
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tr_free(path);
|
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}
|
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|
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bool tr_sys_path_exists(char const* path, tr_error** error)
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{
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TR_ASSERT(path != nullptr);
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bool ret = false;
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HANDLE handle = INVALID_HANDLE_VALUE;
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wchar_t* wide_path = path_to_native_path(path);
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|
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if (wide_path != nullptr)
|
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{
|
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DWORD attributes = GetFileAttributesW(wide_path);
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|
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if (attributes != INVALID_FILE_ATTRIBUTES)
|
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{
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if ((attributes & FILE_ATTRIBUTE_REPARSE_POINT) != 0)
|
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{
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handle = CreateFileW(wide_path, 0, 0, nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, nullptr);
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ret = handle != INVALID_HANDLE_VALUE;
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}
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else
|
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{
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ret = true;
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}
|
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}
|
|
}
|
|
|
|
if (!ret)
|
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{
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set_system_error_if_file_found(error, GetLastError());
|
|
}
|
|
|
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if (handle != INVALID_HANDLE_VALUE)
|
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{
|
|
CloseHandle(handle);
|
|
}
|
|
|
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tr_free(wide_path);
|
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|
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return ret;
|
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}
|
|
|
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bool tr_sys_path_get_info(char const* path, int flags, tr_sys_path_info* info, tr_error** error)
|
|
{
|
|
TR_ASSERT(path != nullptr);
|
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TR_ASSERT(info != nullptr);
|
|
|
|
bool ret = false;
|
|
wchar_t* wide_path = path_to_native_path(path);
|
|
|
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if ((flags & TR_SYS_PATH_NO_FOLLOW) == 0)
|
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{
|
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HANDLE handle = INVALID_HANDLE_VALUE;
|
|
|
|
if (wide_path != nullptr)
|
|
{
|
|
handle = CreateFileW(wide_path, 0, 0, nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, nullptr);
|
|
}
|
|
|
|
if (handle != INVALID_HANDLE_VALUE)
|
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{
|
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tr_error* my_error = nullptr;
|
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ret = tr_sys_file_get_info(handle, info, &my_error);
|
|
|
|
if (!ret)
|
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{
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|
tr_error_propagate(error, &my_error);
|
|
}
|
|
|
|
CloseHandle(handle);
|
|
}
|
|
else
|
|
{
|
|
set_system_error(error, GetLastError());
|
|
}
|
|
}
|
|
else
|
|
{
|
|
WIN32_FILE_ATTRIBUTE_DATA attributes;
|
|
|
|
if (wide_path != nullptr)
|
|
{
|
|
ret = GetFileAttributesExW(wide_path, GetFileExInfoStandard, &attributes);
|
|
}
|
|
|
|
if (ret)
|
|
{
|
|
stat_to_sys_path_info(
|
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attributes.dwFileAttributes,
|
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attributes.nFileSizeLow,
|
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attributes.nFileSizeHigh,
|
|
&attributes.ftLastWriteTime,
|
|
info);
|
|
}
|
|
else
|
|
{
|
|
set_system_error(error, GetLastError());
|
|
}
|
|
}
|
|
|
|
tr_free(wide_path);
|
|
|
|
return ret;
|
|
}
|
|
|
|
bool tr_sys_path_is_relative(char const* path)
|
|
{
|
|
TR_ASSERT(path != nullptr);
|
|
|
|
/* UNC path: `\\...`. */
|
|
if (is_unc_path(path))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/* Local path: `X:` or `X:\...`. */
|
|
if (isalpha(path[0]) && path[1] == ':' && (path[2] == '\0' || is_slash(path[2])))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool tr_sys_path_is_same(char const* path1, char const* path2, tr_error** error)
|
|
{
|
|
TR_ASSERT(path1 != nullptr);
|
|
TR_ASSERT(path2 != nullptr);
|
|
|
|
bool ret = false;
|
|
wchar_t* wide_path1 = nullptr;
|
|
wchar_t* wide_path2 = nullptr;
|
|
HANDLE handle1 = INVALID_HANDLE_VALUE;
|
|
HANDLE handle2 = INVALID_HANDLE_VALUE;
|
|
BY_HANDLE_FILE_INFORMATION fi1, fi2;
|
|
|
|
wide_path1 = path_to_native_path(path1);
|
|
|
|
if (wide_path1 == nullptr)
|
|
{
|
|
goto fail;
|
|
}
|
|
|
|
wide_path2 = path_to_native_path(path2);
|
|
|
|
if (wide_path2 == nullptr)
|
|
{
|
|
goto fail;
|
|
}
|
|
|
|
handle1 = CreateFileW(wide_path1, 0, 0, nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, nullptr);
|
|
|
|
if (handle1 == INVALID_HANDLE_VALUE)
|
|
{
|
|
goto fail;
|
|
}
|
|
|
|
handle2 = CreateFileW(wide_path2, 0, 0, nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, nullptr);
|
|
|
|
if (handle2 == INVALID_HANDLE_VALUE)
|
|
{
|
|
goto fail;
|
|
}
|
|
|
|
/* TODO: Use GetFileInformationByHandleEx on >= Server 2012 */
|
|
|
|
if (!GetFileInformationByHandle(handle1, &fi1) || !GetFileInformationByHandle(handle2, &fi2))
|
|
{
|
|
goto fail;
|
|
}
|
|
|
|
ret = fi1.dwVolumeSerialNumber == fi2.dwVolumeSerialNumber && fi1.nFileIndexHigh == fi2.nFileIndexHigh &&
|
|
fi1.nFileIndexLow == fi2.nFileIndexLow;
|
|
|
|
goto cleanup;
|
|
|
|
fail:
|
|
set_system_error_if_file_found(error, GetLastError());
|
|
|
|
cleanup:
|
|
CloseHandle(handle2);
|
|
CloseHandle(handle1);
|
|
|
|
tr_free(wide_path2);
|
|
tr_free(wide_path1);
|
|
|
|
return ret;
|
|
}
|
|
|
|
char* tr_sys_path_resolve(char const* path, tr_error** error)
|
|
{
|
|
TR_ASSERT(path != nullptr);
|
|
|
|
char* ret = nullptr;
|
|
wchar_t* wide_path;
|
|
wchar_t* wide_ret = nullptr;
|
|
HANDLE handle = INVALID_HANDLE_VALUE;
|
|
DWORD wide_ret_size;
|
|
|
|
wide_path = path_to_native_path(path);
|
|
|
|
if (wide_path == nullptr)
|
|
{
|
|
goto fail;
|
|
}
|
|
|
|
handle = CreateFileW(
|
|
wide_path,
|
|
FILE_READ_EA,
|
|
FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
|
|
nullptr,
|
|
OPEN_EXISTING,
|
|
FILE_FLAG_BACKUP_SEMANTICS,
|
|
nullptr);
|
|
|
|
if (handle == INVALID_HANDLE_VALUE)
|
|
{
|
|
goto fail;
|
|
}
|
|
|
|
wide_ret_size = GetFinalPathNameByHandleW(handle, nullptr, 0, 0);
|
|
|
|
if (wide_ret_size == 0)
|
|
{
|
|
goto fail;
|
|
}
|
|
|
|
wide_ret = tr_new(wchar_t, wide_ret_size);
|
|
|
|
if (GetFinalPathNameByHandleW(handle, wide_ret, wide_ret_size, 0) != wide_ret_size - 1)
|
|
{
|
|
goto fail;
|
|
}
|
|
|
|
TR_ASSERT(wcsncmp(wide_ret, L"\\\\?\\", 4) == 0);
|
|
|
|
ret = native_path_to_path(wide_ret);
|
|
|
|
if (ret != nullptr)
|
|
{
|
|
goto cleanup;
|
|
}
|
|
|
|
fail:
|
|
set_system_error(error, GetLastError());
|
|
|
|
tr_free(ret);
|
|
ret = nullptr;
|
|
|
|
cleanup:
|
|
tr_free(wide_ret);
|
|
tr_free(wide_path);
|
|
|
|
if (handle != INVALID_HANDLE_VALUE)
|
|
{
|
|
CloseHandle(handle);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
char* tr_sys_path_basename(char const* path, tr_error** error)
|
|
{
|
|
if (tr_str_is_empty(path))
|
|
{
|
|
return tr_strdup(".");
|
|
}
|
|
|
|
if (!is_valid_path(path))
|
|
{
|
|
set_system_error(error, ERROR_PATH_NOT_FOUND);
|
|
return nullptr;
|
|
}
|
|
|
|
char const* end = path + strlen(path);
|
|
|
|
while (end > path && is_slash(*(end - 1)))
|
|
{
|
|
--end;
|
|
}
|
|
|
|
if (end == path)
|
|
{
|
|
return tr_strdup("/");
|
|
}
|
|
|
|
char const* name = end;
|
|
|
|
while (name > path && *(name - 1) != ':' && !is_slash(*(name - 1)))
|
|
{
|
|
--name;
|
|
}
|
|
|
|
if (name == end)
|
|
{
|
|
return tr_strdup("/");
|
|
}
|
|
|
|
return tr_strndup(name, end - name);
|
|
}
|
|
|
|
char* tr_sys_path_dirname(char const* path, tr_error** error)
|
|
{
|
|
if (tr_str_is_empty(path))
|
|
{
|
|
return tr_strdup(".");
|
|
}
|
|
|
|
if (!is_valid_path(path))
|
|
{
|
|
set_system_error(error, ERROR_PATH_NOT_FOUND);
|
|
return nullptr;
|
|
}
|
|
|
|
bool const is_unc = is_unc_path(path);
|
|
|
|
if (is_unc && path[2] == '\0')
|
|
{
|
|
return tr_strdup(path);
|
|
}
|
|
|
|
char const* end = path + strlen(path);
|
|
|
|
while (end > path && is_slash(*(end - 1)))
|
|
{
|
|
--end;
|
|
}
|
|
|
|
if (end == path)
|
|
{
|
|
return tr_strdup("/");
|
|
}
|
|
|
|
char const* name = end;
|
|
|
|
while (name > path && *(name - 1) != ':' && !is_slash(*(name - 1)))
|
|
{
|
|
--name;
|
|
}
|
|
|
|
while (name > path && is_slash(*(name - 1)))
|
|
{
|
|
--name;
|
|
}
|
|
|
|
if (name == path)
|
|
{
|
|
return tr_strdup(is_unc ? "\\\\" : ".");
|
|
}
|
|
|
|
if (name > path && *(name - 1) == ':' && *name != '\0' && !is_slash(*name))
|
|
{
|
|
return tr_strdup_printf("%c:.", path[0]);
|
|
}
|
|
|
|
return tr_strndup(path, name - path);
|
|
}
|
|
|
|
bool tr_sys_path_rename(char const* src_path, char const* dst_path, tr_error** error)
|
|
{
|
|
TR_ASSERT(src_path != nullptr);
|
|
TR_ASSERT(dst_path != nullptr);
|
|
|
|
bool ret = false;
|
|
wchar_t* wide_src_path = path_to_native_path(src_path);
|
|
wchar_t* wide_dst_path = path_to_native_path(dst_path);
|
|
|
|
if (wide_src_path != nullptr && wide_dst_path != nullptr)
|
|
{
|
|
DWORD flags = MOVEFILE_REPLACE_EXISTING;
|
|
DWORD attributes;
|
|
|
|
attributes = GetFileAttributesW(wide_src_path);
|
|
|
|
if (attributes != INVALID_FILE_ATTRIBUTES && (attributes & FILE_ATTRIBUTE_DIRECTORY) != 0)
|
|
{
|
|
flags = 0;
|
|
}
|
|
else
|
|
{
|
|
attributes = GetFileAttributesW(wide_dst_path);
|
|
|
|
if (attributes != INVALID_FILE_ATTRIBUTES && (attributes & FILE_ATTRIBUTE_DIRECTORY) != 0)
|
|
{
|
|
flags = 0;
|
|
}
|
|
}
|
|
|
|
ret = MoveFileExW(wide_src_path, wide_dst_path, flags);
|
|
}
|
|
|
|
if (!ret)
|
|
{
|
|
set_system_error(error, GetLastError());
|
|
}
|
|
|
|
tr_free(wide_dst_path);
|
|
tr_free(wide_src_path);
|
|
|
|
return ret;
|
|
}
|
|
|
|
bool tr_sys_path_copy(char const* src_path, char const* dst_path, tr_error** error)
|
|
{
|
|
TR_ASSERT(src_path != nullptr);
|
|
TR_ASSERT(dst_path != nullptr);
|
|
|
|
bool ret = false;
|
|
|
|
wchar_t* wide_src_path = path_to_native_path(src_path);
|
|
wchar_t* wide_dst_path = path_to_native_path(dst_path);
|
|
|
|
if (wide_src_path == nullptr || wide_dst_path == nullptr)
|
|
{
|
|
set_system_error(error, ERROR_INVALID_PARAMETER);
|
|
goto out;
|
|
}
|
|
|
|
auto cancel = BOOL{ FALSE };
|
|
DWORD const flags = COPY_FILE_ALLOW_DECRYPTED_DESTINATION | COPY_FILE_FAIL_IF_EXISTS;
|
|
if (CopyFileExW(wide_src_path, wide_dst_path, nullptr, nullptr, &cancel, flags) == 0)
|
|
{
|
|
set_system_error(error, GetLastError());
|
|
goto out;
|
|
}
|
|
else
|
|
{
|
|
ret = true;
|
|
}
|
|
|
|
out:
|
|
tr_free(wide_src_path);
|
|
tr_free(wide_dst_path);
|
|
|
|
return ret;
|
|
}
|
|
|
|
bool tr_sys_path_remove(char const* path, tr_error** error)
|
|
{
|
|
TR_ASSERT(path != nullptr);
|
|
|
|
bool ret = false;
|
|
wchar_t* wide_path = path_to_native_path(path);
|
|
|
|
if (wide_path != nullptr)
|
|
{
|
|
DWORD const attributes = GetFileAttributesW(wide_path);
|
|
|
|
if (attributes != INVALID_FILE_ATTRIBUTES)
|
|
{
|
|
if ((attributes & FILE_ATTRIBUTE_DIRECTORY) != 0)
|
|
{
|
|
ret = RemoveDirectoryW(wide_path);
|
|
}
|
|
else
|
|
{
|
|
ret = DeleteFileW(wide_path);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!ret)
|
|
{
|
|
set_system_error(error, GetLastError());
|
|
}
|
|
|
|
tr_free(wide_path);
|
|
|
|
return ret;
|
|
}
|
|
|
|
char* tr_sys_path_native_separators(char* path)
|
|
{
|
|
if (path == nullptr)
|
|
{
|
|
return nullptr;
|
|
}
|
|
|
|
for (char* slash = strchr(path, '/'); slash != nullptr; slash = strchr(slash, '/'))
|
|
{
|
|
*slash = '\\';
|
|
}
|
|
|
|
return path;
|
|
}
|
|
|
|
tr_sys_file_t tr_sys_file_get_std(tr_std_sys_file_t std_file, tr_error** error)
|
|
{
|
|
tr_sys_file_t ret = TR_BAD_SYS_FILE;
|
|
|
|
switch (std_file)
|
|
{
|
|
case TR_STD_SYS_FILE_IN:
|
|
ret = GetStdHandle(STD_INPUT_HANDLE);
|
|
break;
|
|
|
|
case TR_STD_SYS_FILE_OUT:
|
|
ret = GetStdHandle(STD_OUTPUT_HANDLE);
|
|
break;
|
|
|
|
case TR_STD_SYS_FILE_ERR:
|
|
ret = GetStdHandle(STD_ERROR_HANDLE);
|
|
break;
|
|
|
|
default:
|
|
TR_ASSERT_MSG(false, "unknown standard file %d", (int)std_file);
|
|
set_system_error(error, ERROR_INVALID_PARAMETER);
|
|
return TR_BAD_SYS_FILE;
|
|
}
|
|
|
|
if (ret == TR_BAD_SYS_FILE)
|
|
{
|
|
set_system_error(error, GetLastError());
|
|
}
|
|
else if (ret == nullptr)
|
|
{
|
|
ret = TR_BAD_SYS_FILE;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
tr_sys_file_t tr_sys_file_open(char const* path, int flags, int permissions, tr_error** error)
|
|
{
|
|
TR_UNUSED(permissions);
|
|
|
|
TR_ASSERT(path != nullptr);
|
|
TR_ASSERT((flags & (TR_SYS_FILE_READ | TR_SYS_FILE_WRITE)) != 0);
|
|
|
|
tr_sys_file_t ret;
|
|
DWORD native_access = 0;
|
|
DWORD native_disposition = OPEN_EXISTING;
|
|
DWORD native_flags = FILE_ATTRIBUTE_NORMAL;
|
|
bool success;
|
|
|
|
if ((flags & TR_SYS_FILE_READ) != 0)
|
|
{
|
|
native_access |= GENERIC_READ;
|
|
}
|
|
|
|
if ((flags & TR_SYS_FILE_WRITE) != 0)
|
|
{
|
|
native_access |= GENERIC_WRITE;
|
|
}
|
|
|
|
if ((flags & TR_SYS_FILE_CREATE_NEW) != 0)
|
|
{
|
|
native_disposition = CREATE_NEW;
|
|
}
|
|
else if ((flags & TR_SYS_FILE_CREATE) != 0)
|
|
{
|
|
native_disposition = (flags & TR_SYS_FILE_TRUNCATE) != 0 ? CREATE_ALWAYS : OPEN_ALWAYS;
|
|
}
|
|
else if ((flags & TR_SYS_FILE_TRUNCATE) != 0)
|
|
{
|
|
native_disposition = TRUNCATE_EXISTING;
|
|
}
|
|
|
|
if ((flags & TR_SYS_FILE_SEQUENTIAL) != 0)
|
|
{
|
|
native_flags |= FILE_FLAG_SEQUENTIAL_SCAN;
|
|
}
|
|
|
|
ret = open_file(path, native_access, native_disposition, native_flags, error);
|
|
|
|
success = ret != TR_BAD_SYS_FILE;
|
|
|
|
if (success && (flags & TR_SYS_FILE_APPEND) != 0)
|
|
{
|
|
success = SetFilePointer(ret, 0, nullptr, FILE_END) != INVALID_SET_FILE_POINTER;
|
|
}
|
|
|
|
if (!success)
|
|
{
|
|
if (error == nullptr)
|
|
{
|
|
set_system_error(error, GetLastError());
|
|
}
|
|
|
|
CloseHandle(ret);
|
|
ret = TR_BAD_SYS_FILE;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void file_open_temp_callback(char const* path, void* param, tr_error** error)
|
|
{
|
|
tr_sys_file_t* result = (tr_sys_file_t*)param;
|
|
|
|
TR_ASSERT(result != nullptr);
|
|
|
|
*result = open_file(path, GENERIC_READ | GENERIC_WRITE, CREATE_NEW, FILE_ATTRIBUTE_TEMPORARY, error);
|
|
}
|
|
|
|
tr_sys_file_t tr_sys_file_open_temp(char* path_template, tr_error** error)
|
|
{
|
|
TR_ASSERT(path_template != nullptr);
|
|
|
|
tr_sys_file_t ret = TR_BAD_SYS_FILE;
|
|
|
|
create_temp_path(path_template, file_open_temp_callback, &ret, error);
|
|
|
|
return ret;
|
|
}
|
|
|
|
bool tr_sys_file_close(tr_sys_file_t handle, tr_error** error)
|
|
{
|
|
TR_ASSERT(handle != TR_BAD_SYS_FILE);
|
|
|
|
bool ret = CloseHandle(handle);
|
|
|
|
if (!ret)
|
|
{
|
|
set_system_error(error, GetLastError());
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
bool tr_sys_file_get_info(tr_sys_file_t handle, tr_sys_path_info* info, tr_error** error)
|
|
{
|
|
TR_ASSERT(handle != TR_BAD_SYS_FILE);
|
|
TR_ASSERT(info != nullptr);
|
|
|
|
BY_HANDLE_FILE_INFORMATION attributes;
|
|
bool ret = GetFileInformationByHandle(handle, &attributes);
|
|
|
|
if (ret)
|
|
{
|
|
stat_to_sys_path_info(
|
|
attributes.dwFileAttributes,
|
|
attributes.nFileSizeLow,
|
|
attributes.nFileSizeHigh,
|
|
&attributes.ftLastWriteTime,
|
|
info);
|
|
}
|
|
else
|
|
{
|
|
set_system_error(error, GetLastError());
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
bool tr_sys_file_seek(tr_sys_file_t handle, int64_t offset, tr_seek_origin_t origin, uint64_t* new_offset, tr_error** error)
|
|
{
|
|
TR_STATIC_ASSERT(TR_SEEK_SET == FILE_BEGIN, "values should match");
|
|
TR_STATIC_ASSERT(TR_SEEK_CUR == FILE_CURRENT, "values should match");
|
|
TR_STATIC_ASSERT(TR_SEEK_END == FILE_END, "values should match");
|
|
|
|
TR_ASSERT(handle != TR_BAD_SYS_FILE);
|
|
TR_ASSERT(origin == TR_SEEK_SET || origin == TR_SEEK_CUR || origin == TR_SEEK_END);
|
|
|
|
bool ret = false;
|
|
LARGE_INTEGER native_offset;
|
|
LARGE_INTEGER new_native_pointer;
|
|
|
|
native_offset.QuadPart = offset;
|
|
|
|
if (SetFilePointerEx(handle, native_offset, &new_native_pointer, origin))
|
|
{
|
|
if (new_offset != nullptr)
|
|
{
|
|
*new_offset = new_native_pointer.QuadPart;
|
|
}
|
|
|
|
ret = true;
|
|
}
|
|
else
|
|
{
|
|
set_system_error(error, GetLastError());
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
bool tr_sys_file_read(tr_sys_file_t handle, void* buffer, uint64_t size, uint64_t* bytes_read, tr_error** error)
|
|
{
|
|
TR_ASSERT(handle != TR_BAD_SYS_FILE);
|
|
TR_ASSERT(buffer != nullptr || size == 0);
|
|
|
|
if (size > MAXDWORD)
|
|
{
|
|
set_system_error(error, ERROR_INVALID_PARAMETER);
|
|
return false;
|
|
}
|
|
|
|
bool ret = false;
|
|
DWORD my_bytes_read;
|
|
|
|
if (ReadFile(handle, buffer, (DWORD)size, &my_bytes_read, nullptr))
|
|
{
|
|
if (bytes_read != nullptr)
|
|
{
|
|
*bytes_read = my_bytes_read;
|
|
}
|
|
|
|
ret = true;
|
|
}
|
|
else
|
|
{
|
|
set_system_error(error, GetLastError());
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
bool tr_sys_file_read_at(
|
|
tr_sys_file_t handle,
|
|
void* buffer,
|
|
uint64_t size,
|
|
uint64_t offset,
|
|
uint64_t* bytes_read,
|
|
tr_error** error)
|
|
{
|
|
TR_ASSERT(handle != TR_BAD_SYS_FILE);
|
|
TR_ASSERT(buffer != nullptr || size == 0);
|
|
|
|
if (size > MAXDWORD)
|
|
{
|
|
set_system_error(error, ERROR_INVALID_PARAMETER);
|
|
return false;
|
|
}
|
|
|
|
bool ret = false;
|
|
OVERLAPPED overlapped;
|
|
DWORD my_bytes_read;
|
|
|
|
overlapped.Offset = (DWORD)offset;
|
|
offset >>= 32;
|
|
overlapped.OffsetHigh = (DWORD)offset;
|
|
overlapped.hEvent = nullptr;
|
|
|
|
if (ReadFile(handle, buffer, (DWORD)size, &my_bytes_read, &overlapped))
|
|
{
|
|
if (bytes_read != nullptr)
|
|
{
|
|
*bytes_read = my_bytes_read;
|
|
}
|
|
|
|
ret = true;
|
|
}
|
|
else
|
|
{
|
|
set_system_error(error, GetLastError());
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
bool tr_sys_file_write(tr_sys_file_t handle, void const* buffer, uint64_t size, uint64_t* bytes_written, tr_error** error)
|
|
{
|
|
TR_ASSERT(handle != TR_BAD_SYS_FILE);
|
|
TR_ASSERT(buffer != nullptr || size == 0);
|
|
|
|
if (size > MAXDWORD)
|
|
{
|
|
set_system_error(error, ERROR_INVALID_PARAMETER);
|
|
return false;
|
|
}
|
|
|
|
bool ret = false;
|
|
DWORD my_bytes_written;
|
|
|
|
if (WriteFile(handle, buffer, (DWORD)size, &my_bytes_written, nullptr))
|
|
{
|
|
if (bytes_written != nullptr)
|
|
{
|
|
*bytes_written = my_bytes_written;
|
|
}
|
|
|
|
ret = true;
|
|
}
|
|
else
|
|
{
|
|
set_system_error(error, GetLastError());
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
bool tr_sys_file_write_at(
|
|
tr_sys_file_t handle,
|
|
void const* buffer,
|
|
uint64_t size,
|
|
uint64_t offset,
|
|
uint64_t* bytes_written,
|
|
tr_error** error)
|
|
{
|
|
TR_ASSERT(handle != TR_BAD_SYS_FILE);
|
|
TR_ASSERT(buffer != nullptr || size == 0);
|
|
|
|
if (size > MAXDWORD)
|
|
{
|
|
set_system_error(error, ERROR_INVALID_PARAMETER);
|
|
return false;
|
|
}
|
|
|
|
bool ret = false;
|
|
OVERLAPPED overlapped;
|
|
DWORD my_bytes_written;
|
|
|
|
overlapped.Offset = (DWORD)offset;
|
|
offset >>= 32;
|
|
overlapped.OffsetHigh = (DWORD)offset;
|
|
overlapped.hEvent = nullptr;
|
|
|
|
if (WriteFile(handle, buffer, (DWORD)size, &my_bytes_written, &overlapped))
|
|
{
|
|
if (bytes_written != nullptr)
|
|
{
|
|
*bytes_written = my_bytes_written;
|
|
}
|
|
|
|
ret = true;
|
|
}
|
|
else
|
|
{
|
|
set_system_error(error, GetLastError());
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
bool tr_sys_file_flush(tr_sys_file_t handle, tr_error** error)
|
|
{
|
|
TR_ASSERT(handle != TR_BAD_SYS_FILE);
|
|
|
|
bool ret = FlushFileBuffers(handle);
|
|
|
|
if (!ret)
|
|
{
|
|
set_system_error(error, GetLastError());
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
bool tr_sys_file_truncate(tr_sys_file_t handle, uint64_t size, tr_error** error)
|
|
{
|
|
TR_ASSERT(handle != TR_BAD_SYS_FILE);
|
|
|
|
FILE_END_OF_FILE_INFO info;
|
|
info.EndOfFile.QuadPart = size;
|
|
|
|
bool ret = SetFileInformationByHandle(handle, FileEndOfFileInfo, &info, sizeof(info));
|
|
|
|
if (!ret)
|
|
{
|
|
set_system_error(error, GetLastError());
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
bool tr_sys_file_advise(tr_sys_file_t handle, uint64_t offset, uint64_t size, tr_sys_file_advice_t advice, tr_error** error)
|
|
{
|
|
TR_UNUSED(handle);
|
|
TR_UNUSED(offset);
|
|
TR_UNUSED(size);
|
|
TR_UNUSED(advice);
|
|
TR_UNUSED(error);
|
|
|
|
TR_ASSERT(handle != TR_BAD_SYS_FILE);
|
|
TR_ASSERT(size > 0);
|
|
TR_ASSERT(advice == TR_SYS_FILE_ADVICE_WILL_NEED || advice == TR_SYS_FILE_ADVICE_DONT_NEED);
|
|
|
|
bool ret = true;
|
|
|
|
/* ??? */
|
|
|
|
return ret;
|
|
}
|
|
|
|
bool tr_sys_file_preallocate(tr_sys_file_t handle, uint64_t size, int flags, tr_error** error)
|
|
{
|
|
TR_ASSERT(handle != TR_BAD_SYS_FILE);
|
|
|
|
if ((flags & TR_SYS_FILE_PREALLOC_SPARSE) != 0)
|
|
{
|
|
DWORD tmp;
|
|
|
|
if (!DeviceIoControl(handle, FSCTL_SET_SPARSE, nullptr, 0, nullptr, 0, &tmp, nullptr))
|
|
{
|
|
set_system_error(error, GetLastError());
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return tr_sys_file_truncate(handle, size, error);
|
|
}
|
|
|
|
void* tr_sys_file_map_for_reading(tr_sys_file_t handle, uint64_t offset, uint64_t size, tr_error** error)
|
|
{
|
|
TR_ASSERT(handle != TR_BAD_SYS_FILE);
|
|
TR_ASSERT(size > 0);
|
|
|
|
if (size > MAXSIZE_T)
|
|
{
|
|
set_system_error(error, ERROR_INVALID_PARAMETER);
|
|
return false;
|
|
}
|
|
|
|
void* ret = nullptr;
|
|
HANDLE mappingHandle = CreateFileMappingW(handle, nullptr, PAGE_READONLY, 0, 0, nullptr);
|
|
|
|
if (mappingHandle != nullptr)
|
|
{
|
|
ULARGE_INTEGER native_offset;
|
|
|
|
native_offset.QuadPart = offset;
|
|
|
|
ret = MapViewOfFile(mappingHandle, FILE_MAP_READ, native_offset.u.HighPart, native_offset.u.LowPart, (SIZE_T)size);
|
|
}
|
|
|
|
if (ret == nullptr)
|
|
{
|
|
set_system_error(error, GetLastError());
|
|
}
|
|
|
|
CloseHandle(mappingHandle);
|
|
|
|
return ret;
|
|
}
|
|
|
|
bool tr_sys_file_unmap(void const* address, uint64_t size, tr_error** error)
|
|
{
|
|
TR_UNUSED(size);
|
|
|
|
TR_ASSERT(address != nullptr);
|
|
TR_ASSERT(size > 0);
|
|
|
|
bool ret = UnmapViewOfFile(address);
|
|
|
|
if (!ret)
|
|
{
|
|
set_system_error(error, GetLastError());
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
bool tr_sys_file_lock(tr_sys_file_t handle, int operation, tr_error** error)
|
|
{
|
|
TR_ASSERT(handle != TR_BAD_SYS_FILE);
|
|
TR_ASSERT((operation & ~(TR_SYS_FILE_LOCK_SH | TR_SYS_FILE_LOCK_EX | TR_SYS_FILE_LOCK_NB | TR_SYS_FILE_LOCK_UN)) == 0);
|
|
TR_ASSERT(
|
|
!!(operation & TR_SYS_FILE_LOCK_SH) + !!(operation & TR_SYS_FILE_LOCK_EX) + !!(operation & TR_SYS_FILE_LOCK_UN) == 1);
|
|
|
|
bool ret;
|
|
auto overlapped = OVERLAPPED{};
|
|
|
|
if ((operation & TR_SYS_FILE_LOCK_UN) == 0)
|
|
{
|
|
DWORD native_flags = 0;
|
|
|
|
if ((operation & TR_SYS_FILE_LOCK_EX) != 0)
|
|
{
|
|
native_flags |= LOCKFILE_EXCLUSIVE_LOCK;
|
|
}
|
|
|
|
if ((operation & TR_SYS_FILE_LOCK_NB) != 0)
|
|
{
|
|
native_flags |= LOCKFILE_FAIL_IMMEDIATELY;
|
|
}
|
|
|
|
ret = LockFileEx(handle, native_flags, 0, MAXDWORD, MAXDWORD, &overlapped) != FALSE;
|
|
}
|
|
else
|
|
{
|
|
ret = UnlockFileEx(handle, 0, MAXDWORD, MAXDWORD, &overlapped) != FALSE;
|
|
}
|
|
|
|
if (!ret)
|
|
{
|
|
set_system_error(error, GetLastError());
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
char* tr_sys_dir_get_current(tr_error** error)
|
|
{
|
|
char* ret = nullptr;
|
|
wchar_t* wide_ret = nullptr;
|
|
DWORD size;
|
|
|
|
size = GetCurrentDirectoryW(0, nullptr);
|
|
|
|
if (size != 0)
|
|
{
|
|
wide_ret = tr_new(wchar_t, size);
|
|
|
|
if (GetCurrentDirectoryW(size, wide_ret) != 0)
|
|
{
|
|
ret = tr_win32_native_to_utf8(wide_ret, size);
|
|
}
|
|
}
|
|
|
|
if (ret == nullptr)
|
|
{
|
|
set_system_error(error, GetLastError());
|
|
}
|
|
|
|
tr_free(wide_ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
bool tr_sys_dir_create(char const* path, int flags, int permissions, tr_error** error)
|
|
{
|
|
return create_dir(path, flags, permissions, true, error);
|
|
}
|
|
|
|
static void dir_create_temp_callback(char const* path, void* param, tr_error** error)
|
|
{
|
|
bool* result = (bool*)param;
|
|
|
|
TR_ASSERT(result != nullptr);
|
|
|
|
*result = create_dir(path, 0, 0, false, error);
|
|
}
|
|
|
|
bool tr_sys_dir_create_temp(char* path_template, tr_error** error)
|
|
{
|
|
TR_ASSERT(path_template != nullptr);
|
|
|
|
bool ret = false;
|
|
|
|
create_temp_path(path_template, dir_create_temp_callback, &ret, error);
|
|
|
|
return ret;
|
|
}
|
|
|
|
tr_sys_dir_t tr_sys_dir_open(char const* path, tr_error** error)
|
|
{
|
|
#ifndef __clang__
|
|
/* Clang gives "static_assert expression is not an integral constant expression" error */
|
|
TR_STATIC_ASSERT(TR_BAD_SYS_DIR == nullptr, "values should match");
|
|
#endif
|
|
|
|
TR_ASSERT(path != nullptr);
|
|
|
|
tr_sys_dir_t ret = tr_new(struct tr_sys_dir_win32, 1);
|
|
|
|
int pattern_size;
|
|
ret->pattern = path_to_native_path_ex(path, 2, &pattern_size);
|
|
|
|
if (ret->pattern != nullptr)
|
|
{
|
|
ret->pattern[pattern_size + 0] = L'\\';
|
|
ret->pattern[pattern_size + 1] = L'*';
|
|
|
|
ret->find_handle = INVALID_HANDLE_VALUE;
|
|
ret->utf8_name = nullptr;
|
|
}
|
|
else
|
|
{
|
|
set_system_error(error, GetLastError());
|
|
|
|
tr_free(ret->pattern);
|
|
tr_free(ret);
|
|
|
|
ret = nullptr;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
char const* tr_sys_dir_read_name(tr_sys_dir_t handle, tr_error** error)
|
|
{
|
|
TR_ASSERT(handle != TR_BAD_SYS_DIR);
|
|
|
|
DWORD error_code = ERROR_SUCCESS;
|
|
|
|
if (handle->find_handle == INVALID_HANDLE_VALUE)
|
|
{
|
|
handle->find_handle = FindFirstFileW(handle->pattern, &handle->find_data);
|
|
|
|
if (handle->find_handle == INVALID_HANDLE_VALUE)
|
|
{
|
|
error_code = GetLastError();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (!FindNextFileW(handle->find_handle, &handle->find_data))
|
|
{
|
|
error_code = GetLastError();
|
|
}
|
|
}
|
|
|
|
if (error_code != ERROR_SUCCESS)
|
|
{
|
|
set_system_error_if_file_found(error, error_code);
|
|
return nullptr;
|
|
}
|
|
|
|
char* ret = tr_win32_native_to_utf8(handle->find_data.cFileName, -1);
|
|
|
|
if (ret != nullptr)
|
|
{
|
|
tr_free(handle->utf8_name);
|
|
handle->utf8_name = ret;
|
|
}
|
|
else
|
|
{
|
|
set_system_error(error, GetLastError());
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
bool tr_sys_dir_close(tr_sys_dir_t handle, tr_error** error)
|
|
{
|
|
TR_ASSERT(handle != TR_BAD_SYS_DIR);
|
|
|
|
bool ret = FindClose(handle->find_handle);
|
|
|
|
if (!ret)
|
|
{
|
|
set_system_error(error, GetLastError());
|
|
}
|
|
|
|
tr_free(handle->utf8_name);
|
|
tr_free(handle->pattern);
|
|
tr_free(handle);
|
|
|
|
return ret;
|
|
}
|