1 /* mswindows.c -- Windows-specific support
2 Copyright (C) 1995, 1996, 1997, 1998, 2004
3 Free Software Foundation, Inc.
5 This file is part of GNU Wget.
7 GNU Wget is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 GNU Wget is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with Wget; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 In addition, as a special exception, the Free Software Foundation
22 gives permission to link the code of its release of Wget with the
23 OpenSSL project's "OpenSSL" library (or with modified versions of it
24 that use the same license as the "OpenSSL" library), and distribute
25 the linked executables. You must obey the GNU General Public License
26 in all respects for all of the code used other than "OpenSSL". If you
27 modify this file, you may extend this exception to your version of the
28 file, but you are not obligated to do so. If you do not wish to do
29 so, delete this exception statement from your version. */
31 /* #### Someone please document what these functions do! */
42 #ifdef HACK_BCC_UTIME_BUG
48 # ifdef HAVE_SYS_UTIME_H
49 # include <sys/utime.h>
61 #ifndef ES_SYSTEM_REQUIRED
62 #define ES_SYSTEM_REQUIRED 0x00000001
66 #define ES_CONTINUOUS 0x80000000
70 /* Defined in log.c. */
71 void log_request_redirect_output PARAMS ((const char *));
73 static DWORD set_sleep_mode (DWORD mode);
75 static DWORD pwr_mode = 0;
76 static int windows_nt_p;
78 /* Windows version of xsleep in utils.c. */
81 xsleep (double seconds)
86 /* Explained in utils.c. */
88 seconds -= (long) seconds;
90 usleep (seconds * 1000000L);
91 #else /* not HAVE_USLEEP */
92 SleepEx (seconds * 1000, FALSE);
93 #endif /* not HAVE_USLEEP */
97 windows_main_junk (int *argc, char **argv, char **exec_name)
101 /* Remove .EXE from filename if it has one. */
102 *exec_name = xstrdup (*exec_name);
103 p = strrchr (*exec_name, '.');
113 set_sleep_mode (pwr_mode);
120 log_request_redirect_output ("CTRL+Break");
124 fork_to_background (void)
126 /* Whether we arrange our own version of opt.lfilename here. */
131 opt.lfilename = unique_name (DEFAULT_LOGFILE, 0);
134 printf (_("Continuing in background.\n"));
136 printf (_("Output will be written to `%s'.\n"), opt.lfilename);
144 ws_handler (DWORD dwEvent)
151 #ifdef CTRLBREAK_BACKGND
152 case CTRL_BREAK_EVENT:
154 fork_to_background ();
156 case CTRL_SHUTDOWN_EVENT:
157 case CTRL_CLOSE_EVENT:
158 case CTRL_LOGOFF_EVENT:
166 static char *title_buf = NULL;
167 static char *curr_url = NULL;
168 static int old_percentage = -1;
170 /* Updates the console title with the URL of the current file being
173 ws_changetitle (const char *url)
175 xfree_null (title_buf);
176 xfree_null (curr_url);
177 title_buf = (char *)xmalloc (strlen (url) + 20);
178 curr_url = xstrdup (url);
180 sprintf (title_buf, "Wget %s", curr_url);
181 SetConsoleTitle (title_buf);
184 /* Updates the console title with the percentage of the current file
187 ws_percenttitle (double percentage_float)
189 int percentage = (int) percentage_float;
191 /* Only update the title when the percentage has changed. */
192 if (percentage == old_percentage)
195 old_percentage = percentage;
197 if (percentage > 100)
200 assert (title_buf != NULL);
201 assert (curr_url != NULL);
203 sprintf (title_buf, "Wget [%d%%] %s", percentage, curr_url);
204 SetConsoleTitle (title_buf);
207 /* Returns a pointer to the fully qualified name of the directory that
208 contains the Wget binary (wget.exe). The returned path does not have a
209 trailing path separator. Returns NULL on failure. */
213 static char *wspathsave = NULL;
217 char buf[MAX_PATH + 1];
221 len = GetModuleFileName (GetModuleHandle (NULL), buf, sizeof (buf));
222 if (!len || (len >= sizeof (buf)))
225 p = strrchr (buf, PATH_SEPARATOR);
230 wspathsave = xstrdup (buf);
236 /* Perform Windows specific initialization. */
245 if (GetVersionEx (&os) == TRUE
246 && os.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS)
249 requested = MAKEWORD (1, 1);
250 err = WSAStartup (requested, &data);
253 fprintf (stderr, _("%s: Couldn't find usable socket driver.\n"),
258 if (data.wVersion < requested)
260 fprintf (stderr, _("%s: Couldn't find usable socket driver.\n"),
267 pwr_mode = set_sleep_mode (0);
268 SetConsoleCtrlHandler (ws_handler, TRUE);
271 /* Replacement utime function for buggy Borland C++Builder 5.5 compiler.
272 (The Borland utime function only works on Windows NT.) */
274 #ifdef HACK_BCC_UTIME_BUG
276 borland_utime (const char *path, const struct utimbuf *times)
283 if ((fd = open (path, O_RDWR)) < 0)
286 ptr_tm = localtime (×->modtime);
287 ft.ft_tsec = ptr_tm->tm_sec >> 1;
288 ft.ft_min = ptr_tm->tm_min;
289 ft.ft_hour = ptr_tm->tm_hour;
290 ft.ft_day = ptr_tm->tm_mday;
291 ft.ft_month = ptr_tm->tm_mon + 1;
292 ft.ft_year = ptr_tm->tm_year - 80;
293 res = setftime (fd, &ft);
299 /* Prevent Windows entering sleep/hibernation-mode while Wget is doing
300 a lengthy transfer. Windows does not, by default, consider network
301 activity in console-programs as activity! Works on Win-98/ME/2K
304 set_sleep_mode (DWORD mode)
306 HMODULE mod = LoadLibrary ("kernel32.dll");
307 DWORD (WINAPI *_SetThreadExecutionState) (DWORD) = NULL;
308 DWORD rc = (DWORD)-1;
311 (void *)_SetThreadExecutionState
312 = GetProcAddress ((HINSTANCE)mod, "SetThreadExecutionState");
314 if (_SetThreadExecutionState)
316 if (mode == 0) /* first time */
317 mode = (ES_SYSTEM_REQUIRED | ES_CONTINUOUS);
318 rc = (*_SetThreadExecutionState) (mode);
322 DEBUGP (("set_sleep_mode(): mode 0x%08lX, rc 0x%08lX\n", mode, rc));
326 /* run_with_timeout Windows implementation. */
328 /* Stack size 0 uses default thread stack-size (reserve+commit).
329 Determined by what's in the PE header. */
330 #define THREAD_STACK_SIZE 0
334 void (*fun) (void *);
339 /* The callback that runs FUN(ARG) in a separate thread. This
340 function exists for two reasons: a) to not require FUN to be
341 declared WINAPI/__stdcall[1], and b) to retrieve Winsock errors,
342 which are per-thread. The latter is useful when FUN calls Winsock
343 functions, which is how run_with_timeout is used in Wget.
345 [1] MSVC can use __fastcall globally (cl /Gr) and on Watcom this is
346 the default (wcc386 -3r). */
349 thread_helper (void *arg)
351 struct thread_data *td = (struct thread_data *) arg;
353 /* Initialize Winsock error to what it was in the parent. That way
354 the subsequent call to WSAGetLastError will return the same value
355 if td->fun doesn't change Winsock error state. */
356 WSASetLastError (td->ws_error);
360 /* Return Winsock error to the caller, in case FUN ran Winsock
362 td->ws_error = WSAGetLastError ();
366 /* Call FUN(ARG), but don't allow it to run for more than TIMEOUT
367 seconds. Returns non-zero if the function was interrupted with a
368 timeout, zero otherwise.
370 This works by running FUN in a separate thread and terminating the
371 thread if it doesn't finish in the specified time. */
374 run_with_timeout (double seconds, void (*fun) (void *), void *arg)
376 static HANDLE thread_hnd = NULL;
377 struct thread_data thread_arg;
381 DEBUGP (("seconds %.2f, ", seconds));
390 /* Should never happen, but test for recursivety anyway. */
391 assert (thread_hnd == NULL);
393 thread_arg.fun = fun;
394 thread_arg.arg = arg;
395 thread_arg.ws_error = WSAGetLastError ();
396 thread_hnd = CreateThread (NULL, THREAD_STACK_SIZE, thread_helper,
397 &thread_arg, 0, &thread_id);
400 DEBUGP (("CreateThread() failed; %s\n", strerror (GetLastError ())));
401 goto blocking_fallback;
404 if (WaitForSingleObject (thread_hnd, (DWORD)(1000 * seconds))
407 /* Propagate error state (which is per-thread) to this thread,
408 so the caller can inspect it. */
409 WSASetLastError (thread_arg.ws_error);
410 DEBUGP (("Winsock error: %d\n", WSAGetLastError ()));
415 TerminateThread (thread_hnd, 1);
419 CloseHandle (thread_hnd); /* Clear-up after TerminateThread(). */