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- /***************************************************************************
- * _ _ ____ _
- * Project ___| | | | _ \| |
- * / __| | | | |_) | |
- * | (__| |_| | _ <| |___
- * \___|\___/|_| \_\_____|
- *
- * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
- *
- * This software is licensed as described in the file COPYING, which
- * you should have received as part of this distribution. The terms
- * are also available at https://curl.se/docs/copyright.html.
- *
- * You may opt to use, copy, modify, merge, publish, distribute and/or sell
- * copies of the Software, and permit persons to whom the Software is
- * furnished to do so, under the terms of the COPYING file.
- *
- * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
- * KIND, either express or implied.
- *
- * SPDX-License-Identifier: curl
- *
- ***************************************************************************/
- #include "tool_filetime.h"
- #include "tool_cfgable.h"
- #include "tool_msgs.h"
- #include "curlx.h"
- #ifdef HAVE_UTIME_H
- # include <utime.h>
- #elif defined(HAVE_SYS_UTIME_H)
- # include <sys/utime.h>
- #endif
- /* Returns 0 on success, non-zero on file problems */
- int getfiletime(const char *filename, struct GlobalConfig *global,
- curl_off_t *stamp)
- {
- int rc = 1;
- /* Windows stat() may attempt to adjust the unix GMT file time by a daylight
- saving time offset and since it's GMT that is bad behavior. When we have
- access to a 64-bit type we can bypass stat and get the times directly. */
- #if defined(WIN32)
- HANDLE hfile;
- TCHAR *tchar_filename = curlx_convert_UTF8_to_tchar((char *)filename);
- hfile = CreateFile(tchar_filename, FILE_READ_ATTRIBUTES,
- (FILE_SHARE_READ | FILE_SHARE_WRITE |
- FILE_SHARE_DELETE),
- NULL, OPEN_EXISTING, 0, NULL);
- curlx_unicodefree(tchar_filename);
- if(hfile != INVALID_HANDLE_VALUE) {
- FILETIME ft;
- if(GetFileTime(hfile, NULL, NULL, &ft)) {
- curl_off_t converted = (curl_off_t)ft.dwLowDateTime
- | ((curl_off_t)ft.dwHighDateTime) << 32;
- if(converted < CURL_OFF_T_C(116444736000000000))
- warnf(global, "Failed to get filetime: underflow");
- else {
- *stamp = (converted - CURL_OFF_T_C(116444736000000000)) / 10000000;
- rc = 0;
- }
- }
- else {
- warnf(global, "Failed to get filetime: "
- "GetFileTime failed: GetLastError %u",
- (unsigned int)GetLastError());
- }
- CloseHandle(hfile);
- }
- else if(GetLastError() != ERROR_FILE_NOT_FOUND) {
- warnf(global, "Failed to get filetime: "
- "CreateFile failed: GetLastError %u",
- (unsigned int)GetLastError());
- }
- #else
- struct_stat statbuf;
- if(-1 != stat(filename, &statbuf)) {
- *stamp = (curl_off_t)statbuf.st_mtime;
- rc = 0;
- }
- else
- warnf(global, "Failed to get filetime: %s", strerror(errno));
- #endif
- return rc;
- }
- #if defined(HAVE_UTIME) || defined(HAVE_UTIMES) || defined(WIN32)
- void setfiletime(curl_off_t filetime, const char *filename,
- struct GlobalConfig *global)
- {
- if(filetime >= 0) {
- /* Windows utime() may attempt to adjust the unix GMT file time by a daylight
- saving time offset and since it's GMT that is bad behavior. When we have
- access to a 64-bit type we can bypass utime and set the times directly. */
- #if defined(WIN32)
- HANDLE hfile;
- TCHAR *tchar_filename = curlx_convert_UTF8_to_tchar((char *)filename);
- /* 910670515199 is the maximum unix filetime that can be used as a
- Windows FILETIME without overflow: 30827-12-31T23:59:59. */
- if(filetime > CURL_OFF_T_C(910670515199)) {
- warnf(global, "Failed to set filetime %" CURL_FORMAT_CURL_OFF_T
- " on outfile: overflow", filetime);
- curlx_unicodefree(tchar_filename);
- return;
- }
- hfile = CreateFile(tchar_filename, FILE_WRITE_ATTRIBUTES,
- (FILE_SHARE_READ | FILE_SHARE_WRITE |
- FILE_SHARE_DELETE),
- NULL, OPEN_EXISTING, 0, NULL);
- curlx_unicodefree(tchar_filename);
- if(hfile != INVALID_HANDLE_VALUE) {
- curl_off_t converted = ((curl_off_t)filetime * 10000000) +
- CURL_OFF_T_C(116444736000000000);
- FILETIME ft;
- ft.dwLowDateTime = (DWORD)(converted & 0xFFFFFFFF);
- ft.dwHighDateTime = (DWORD)(converted >> 32);
- if(!SetFileTime(hfile, NULL, &ft, &ft)) {
- warnf(global, "Failed to set filetime %" CURL_FORMAT_CURL_OFF_T
- " on outfile: SetFileTime failed: GetLastError %u",
- filetime, (unsigned int)GetLastError());
- }
- CloseHandle(hfile);
- }
- else {
- warnf(global, "Failed to set filetime %" CURL_FORMAT_CURL_OFF_T
- " on outfile: CreateFile failed: GetLastError %u",
- filetime, (unsigned int)GetLastError());
- }
- #elif defined(HAVE_UTIMES)
- struct timeval times[2];
- times[0].tv_sec = times[1].tv_sec = (time_t)filetime;
- times[0].tv_usec = times[1].tv_usec = 0;
- if(utimes(filename, times)) {
- warnf(global, "Failed to set filetime %" CURL_FORMAT_CURL_OFF_T
- " on '%s': %s", filetime, filename, strerror(errno));
- }
- #elif defined(HAVE_UTIME)
- struct utimbuf times;
- times.actime = (time_t)filetime;
- times.modtime = (time_t)filetime;
- if(utime(filename, ×)) {
- warnf(global, "Failed to set filetime %" CURL_FORMAT_CURL_OFF_T
- " on '%s': %s", filetime, filename, strerror(errno));
- }
- #endif
- }
- }
- #endif /* defined(HAVE_UTIME) || defined(HAVE_UTIMES) || \
- defined(WIN32) */
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