/* mswindows.c -- Windows-specific support
- Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
+ Copyright (C) 1996-2006 Free Software Foundation, Inc.
This file is part of GNU Wget.
GNU Wget is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
+the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
GNU Wget is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
-along with Wget; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
In addition, as a special exception, the Free Software Foundation
gives permission to link the code of its release of Wget with the
file, but you are not obligated to do so. If you do not wish to do
so, delete this exception statement from your version. */
-/* #### Someone please document what these functions do! */
-
#include <config.h>
#include <stdio.h>
#include <errno.h>
#include <math.h>
-#ifdef HACK_BCC_UTIME_BUG
-# include <io.h>
-# include <fcntl.h>
-# ifdef HAVE_UTIME_H
-# include <utime.h>
-# endif
-# ifdef HAVE_SYS_UTIME_H
-# include <sys/utime.h>
-# endif
-#endif
+#define INHIBIT_WRAP /* avoid wrapping of socket, bind, ... */
#include "wget.h"
#include "utils.h"
#include "url.h"
-#ifndef errno
-extern int errno;
-#endif
-
#ifndef ES_SYSTEM_REQUIRED
#define ES_SYSTEM_REQUIRED 0x00000001
#endif
/* Defined in log.c. */
-void log_request_redirect_output PARAMS ((const char *));
-
-static DWORD set_sleep_mode (DWORD mode);
+void log_request_redirect_output (const char *);
-static DWORD pwr_mode = 0;
-static int windows_nt_p;
+/* Windows version of xsleep in utils.c. */
-#ifndef HAVE_SLEEP
-
-/* Emulation of Unix sleep. */
-
-unsigned int
-sleep (unsigned seconds)
-{
- return SleepEx (1000 * seconds, TRUE) ? 0U : 1000 * seconds;
-}
-#endif
-
-#ifndef HAVE_USLEEP
-/* Emulation of Unix usleep(). This has a granularity of
- milliseconds, but that's ok because:
-
- a) Wget is only using it with milliseconds [not anymore, but b)
- still applies];
-
- b) You can't rely on usleep's granularity anyway. If a caller
- expects usleep to respect every microsecond, he's in for a
- surprise. */
-
-int
-usleep (unsigned long usec)
+void
+xsleep (double seconds)
{
- SleepEx (usec / 1000, TRUE);
- return 0;
+#ifdef HAVE_USLEEP
+ if (seconds > 1000)
+ {
+ /* Explained in utils.c. */
+ sleep (seconds);
+ seconds -= (long) seconds;
+ }
+ usleep (seconds * 1000000);
+#else /* not HAVE_USLEEP */
+ SleepEx ((DWORD) (seconds * 1000 + .5), FALSE);
+#endif /* not HAVE_USLEEP */
}
-#endif /* HAVE_USLEEP */
void
-windows_main_junk (int *argc, char **argv, char **exec_name)
+windows_main (int *argc, char **argv, char **exec_name)
{
char *p;
*p = '\0';
}
\f
-/* Winsock stuff. */
-
static void
ws_cleanup (void)
{
WSACleanup ();
- if (pwr_mode)
- set_sleep_mode (pwr_mode);
- pwr_mode = 0;
}
+#if defined(CTRLBREAK_BACKGND) || defined(CTRLC_BACKGND)
static void
-ws_hangup (void)
+ws_hangup (const char *reason)
{
- log_request_redirect_output ("CTRL+Break");
+ fprintf (stderr, _("Continuing in background.\n"));
+ log_request_redirect_output (reason);
+
+ /* Detach process from the current console. Under Windows 9x, if we
+ were launched from a 16-bit process (which is usually the case;
+ command.com is 16-bit) the parent process should resume right away.
+ Under NT or if launched from a 32-process under 9x, this is a futile
+ gesture as the parent will wait for us to terminate before resuming. */
+ FreeConsole ();
}
+#endif
-void
-fork_to_background (void)
+/* Construct the name for a named section (a.k.a. `file mapping') object.
+ The returned string is dynamically allocated and needs to be xfree()'d. */
+static char *
+make_section_name (DWORD pid)
+{
+ return aprintf ("gnu_wget_fake_fork_%lu", pid);
+}
+
+/* This structure is used to hold all the data that is exchanged between
+ parent and child. */
+struct fake_fork_info
{
- /* Whether we arrange our own version of opt.lfilename here. */
- int changedp = 0;
+ HANDLE event;
+ bool logfile_changed;
+ char lfilename[MAX_PATH + 1];
+};
+/* Determines if we are the child and if so performs the child logic.
+ Return values:
+ < 0 error
+ 0 parent
+ > 0 child
+*/
+static int
+fake_fork_child (void)
+{
+ HANDLE section, event;
+ struct fake_fork_info *info;
+ char *name;
+
+ name = make_section_name (GetCurrentProcessId ());
+ section = OpenFileMapping (FILE_MAP_WRITE, FALSE, name);
+ xfree (name);
+ /* It seems that Windows 9x and NT set last-error inconsistently when
+ OpenFileMapping() fails; so we assume it failed because the section
+ object does not exist. */
+ if (!section)
+ return 0; /* We are the parent. */
+
+ info = MapViewOfFile (section, FILE_MAP_WRITE, 0, 0, 0);
+ if (!info)
+ {
+ CloseHandle (section);
+ return -1;
+ }
+
+ event = info->event;
+
+ info->logfile_changed = false;
if (!opt.lfilename)
{
- opt.lfilename = unique_name (DEFAULT_LOGFILE, 0);
- changedp = 1;
+ /* See utils:fork_to_background for explanation. */
+ FILE *new_log_fp = unique_create (DEFAULT_LOGFILE, false, &opt.lfilename);
+ if (new_log_fp)
+ {
+ info->logfile_changed = true;
+ strncpy (info->lfilename, opt.lfilename, sizeof (info->lfilename));
+ info->lfilename[sizeof (info->lfilename) - 1] = '\0';
+ fclose (new_log_fp);
+ }
+ }
+
+ UnmapViewOfFile (info);
+ CloseHandle (section);
+
+ /* Inform the parent that we've done our part. */
+ if (!SetEvent (event))
+ return -1;
+
+ CloseHandle (event);
+ return 1; /* We are the child. */
+}
+
+/* Windows doesn't support the fork() call; so we fake it by invoking
+ another copy of Wget with the same arguments with which we were
+ invoked. The child copy of Wget should perform the same initialization
+ sequence as the parent; so we should have two processes that are
+ essentially identical. We create a specially named section object that
+ allows the child to distinguish itself from the parent and is used to
+ exchange information between the two processes. We use an event object
+ for synchronization. */
+static void
+fake_fork (void)
+{
+ char exe[MAX_PATH + 1];
+ DWORD exe_len, le;
+ SECURITY_ATTRIBUTES sa;
+ HANDLE section, event, h[2];
+ STARTUPINFO si;
+ PROCESS_INFORMATION pi;
+ struct fake_fork_info *info;
+ char *name;
+ BOOL rv;
+
+ section = pi.hProcess = pi.hThread = NULL;
+
+ /* Get the fully qualified name of our executable. This is more reliable
+ than using argv[0]. */
+ exe_len = GetModuleFileName (GetModuleHandle (NULL), exe, sizeof (exe));
+ if (!exe_len || (exe_len >= sizeof (exe)))
+ return;
+
+ sa.nLength = sizeof (sa);
+ sa.lpSecurityDescriptor = NULL;
+ sa.bInheritHandle = TRUE;
+
+ /* Create an anonymous inheritable event object that starts out
+ non-signaled. */
+ event = CreateEvent (&sa, FALSE, FALSE, NULL);
+ if (!event)
+ return;
+
+ /* Create the child process detached form the current console and in a
+ suspended state. */
+ xzero (si);
+ si.cb = sizeof (si);
+ rv = CreateProcess (exe, GetCommandLine (), NULL, NULL, TRUE,
+ CREATE_SUSPENDED | DETACHED_PROCESS,
+ NULL, NULL, &si, &pi);
+ if (!rv)
+ goto cleanup;
+
+ /* Create a named section object with a name based on the process id of
+ the child. */
+ name = make_section_name (pi.dwProcessId);
+ section =
+ CreateFileMapping (INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, 0,
+ sizeof (struct fake_fork_info), name);
+ le = GetLastError();
+ xfree (name);
+ /* Fail if the section object already exists (should not happen). */
+ if (!section || (le == ERROR_ALREADY_EXISTS))
+ {
+ rv = FALSE;
+ goto cleanup;
+ }
+
+ /* Copy the event handle into the section object. */
+ info = MapViewOfFile (section, FILE_MAP_WRITE, 0, 0, 0);
+ if (!info)
+ {
+ rv = FALSE;
+ goto cleanup;
+ }
+
+ info->event = event;
+
+ UnmapViewOfFile (info);
+
+ /* Start the child process. */
+ rv = ResumeThread (pi.hThread);
+ if (!rv)
+ {
+ TerminateProcess (pi.hProcess, (DWORD) -1);
+ goto cleanup;
+ }
+
+ /* Wait for the child to signal to us that it has done its part. If it
+ terminates before signaling us it's an error. */
+
+ h[0] = event;
+ h[1] = pi.hProcess;
+ rv = WAIT_OBJECT_0 == WaitForMultipleObjects (2, h, FALSE, 5 * 60 * 1000);
+ if (!rv)
+ goto cleanup;
+
+ info = MapViewOfFile (section, FILE_MAP_READ, 0, 0, 0);
+ if (!info)
+ {
+ rv = FALSE;
+ goto cleanup;
+ }
+
+ /* Ensure string is properly terminated. */
+ if (info->logfile_changed &&
+ !memchr (info->lfilename, '\0', sizeof (info->lfilename)))
+ {
+ rv = FALSE;
+ goto cleanup;
}
- printf (_("Continuing in background.\n"));
- if (changedp)
- printf (_("Output will be written to `%s'.\n"), opt.lfilename);
- ws_hangup ();
- if (!windows_nt_p)
- FreeConsole ();
+ printf (_("Continuing in background, pid %lu.\n"), pi.dwProcessId);
+ if (info->logfile_changed)
+ printf (_("Output will be written to `%s'.\n"), info->lfilename);
+
+ UnmapViewOfFile (info);
+
+cleanup:
+
+ if (event)
+ CloseHandle (event);
+ if (section)
+ CloseHandle (section);
+ if (pi.hThread)
+ CloseHandle (pi.hThread);
+ if (pi.hProcess)
+ CloseHandle (pi.hProcess);
+
+ /* We're the parent. If all is well, terminate. */
+ if (rv)
+ exit (0);
+
+ /* We failed, return. */
+}
+
+/* This is the corresponding Windows implementation of the
+ fork_to_background() function in utils.c. */
+void
+fork_to_background (void)
+{
+ int rv;
+
+ rv = fake_fork_child ();
+ if (rv < 0)
+ {
+ fprintf (stderr, "fake_fork_child() failed\n");
+ abort ();
+ }
+ else if (rv == 0)
+ {
+ /* We're the parent. */
+ fake_fork ();
+ /* If fake_fork() returns, it failed. */
+ fprintf (stderr, "fake_fork() failed\n");
+ abort ();
+ }
+ /* If we get here, we're the child. */
}
static BOOL WINAPI
{
#ifdef CTRLC_BACKGND
case CTRL_C_EVENT:
+ ws_hangup ("CTRL+C");
+ return TRUE;
#endif
#ifdef CTRLBREAK_BACKGND
case CTRL_BREAK_EVENT:
+ ws_hangup ("CTRL+Break");
+ return TRUE;
#endif
- fork_to_background ();
- break;
- case CTRL_SHUTDOWN_EVENT:
- case CTRL_CLOSE_EVENT:
- case CTRL_LOGOFF_EVENT:
default:
- ws_cleanup ();
return FALSE;
}
- return TRUE;
}
static char *title_buf = NULL;
static char *curr_url = NULL;
-static int num_urls = 0;
+static int old_percentage = -1;
+/* Updates the console title with the URL of the current file being
+ transferred. */
void
-ws_changetitle (const char *url, int nurl)
+ws_changetitle (const char *url)
{
- if (!nurl)
- return;
-
- num_urls = nurl;
- if (title_buf)
- xfree(title_buf);
- if (curr_url)
- xfree(curr_url);
- title_buf = (char *)xmalloc (strlen (url) + 20);
- curr_url = xstrdup(url);
- sprintf(title_buf, "Wget %s%s", url, nurl == 1 ? "" : " ...");
- SetConsoleTitle(title_buf);
+ xfree_null (title_buf);
+ xfree_null (curr_url);
+ title_buf = xmalloc (strlen (url) + 20);
+ curr_url = xstrdup (url);
+ old_percentage = -1;
+ sprintf (title_buf, "Wget %s", curr_url);
+ SetConsoleTitle (title_buf);
}
+/* Updates the console title with the percentage of the current file
+ transferred. */
void
-ws_percenttitle (double percent)
+ws_percenttitle (double percentage_float)
{
- if (num_urls == 1 && title_buf && curr_url && fabs(percent) <= 100.0)
- {
- sprintf (title_buf, "Wget [%.0f%%] %s", percent, curr_url);
- SetConsoleTitle (title_buf);
- }
+ int percentage;
+
+ if (!title_buf || !curr_url)
+ return;
+
+ percentage = (int) percentage_float;
+
+ /* Clamp percentage value. */
+ if (percentage < 0)
+ percentage = 0;
+ if (percentage > 100)
+ percentage = 100;
+
+ /* Only update the title when the percentage has changed. */
+ if (percentage == old_percentage)
+ return;
+
+ old_percentage = percentage;
+
+ sprintf (title_buf, "Wget [%d%%] %s", percentage, curr_url);
+ SetConsoleTitle (title_buf);
}
+/* Returns a pointer to the fully qualified name of the directory that
+ contains the Wget binary (wget.exe). The returned path does not have a
+ trailing path separator. Returns NULL on failure. */
char *
ws_mypath (void)
{
static char *wspathsave = NULL;
- char buffer[MAX_PATH];
- char *ptr;
- if (wspathsave)
+ if (!wspathsave)
{
- return wspathsave;
- }
+ char buf[MAX_PATH + 1];
+ char *p;
+ DWORD len;
- if (GetModuleFileName (NULL, buffer, MAX_PATH) &&
- (ptr = strrchr (buffer, PATH_SEPARATOR)) != NULL)
- {
- *(ptr + 1) = '\0';
- wspathsave = xstrdup (buffer);
+ len = GetModuleFileName (GetModuleHandle (NULL), buf, sizeof (buf));
+ if (!len || (len >= sizeof (buf)))
+ return NULL;
+
+ p = strrchr (buf, PATH_SEPARATOR);
+ if (!p)
+ return NULL;
+
+ *p = '\0';
+ wspathsave = xstrdup (buf);
}
- else
- wspathsave = NULL;
+
return wspathsave;
}
-void
-ws_help (const char *name)
+/* Prevent Windows entering sleep/hibernation-mode while Wget is doing
+ a lengthy transfer. Windows does not, by default, consider network
+ activity in console-programs as activity! Works on Win-98/ME/2K
+ and up. */
+static void
+set_sleep_mode (void)
{
- char *mypath = ws_mypath ();
+ typedef DWORD (WINAPI *func_t) (DWORD);
+ func_t set_exec_state;
- if (mypath)
- {
- struct stat sbuf;
- char *buf = (char *)alloca (strlen (mypath) + strlen (name) + 4 + 1);
- sprintf (buf, "%s%s.HLP", mypath, name);
- if (stat (buf, &sbuf) == 0)
- {
- printf (_("Starting WinHelp %s\n"), buf);
- WinHelp (NULL, buf, HELP_INDEX, 0);
- }
- else
- {
- printf ("%s: %s\n", buf, strerror (errno));
- }
- }
+ set_exec_state =
+ (func_t) GetProcAddress (GetModuleHandle ("KERNEL32.DLL"),
+ "SetThreadExecutionState");
+
+ if (set_exec_state)
+ set_exec_state (ES_SYSTEM_REQUIRED | ES_CONTINUOUS);
}
+/* Perform Windows specific initialization. */
void
ws_startup (void)
{
- WORD requested;
WSADATA data;
- int err;
- OSVERSIONINFO os;
-
- if (GetVersionEx (&os) == TRUE
- && os.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS)
- windows_nt_p = 1;
-
- requested = MAKEWORD (1, 1);
- err = WSAStartup (requested, &data);
-
+ WORD requested = MAKEWORD (1, 1);
+ int err = WSAStartup (requested, &data);
if (err != 0)
{
fprintf (stderr, _("%s: Couldn't find usable socket driver.\n"),
WSACleanup ();
exit (1);
}
+
atexit (ws_cleanup);
- pwr_mode = set_sleep_mode (0);
+ set_sleep_mode ();
SetConsoleCtrlHandler (ws_handler, TRUE);
}
-
-/* Replacement utime function for buggy Borland C++Builder 5.5 compiler.
- (The Borland utime function only works on Windows NT.) */
-
-#ifdef HACK_BCC_UTIME_BUG
-int borland_utime(const char *path, const struct utimbuf *times)
-{
- int fd;
- int res;
- struct ftime ft;
- struct tm *ptr_tm;
-
- if ((fd = open (path, O_RDWR)) < 0)
- return -1;
-
- ptr_tm = localtime (×->modtime);
- ft.ft_tsec = ptr_tm->tm_sec >> 1;
- ft.ft_min = ptr_tm->tm_min;
- ft.ft_hour = ptr_tm->tm_hour;
- ft.ft_day = ptr_tm->tm_mday;
- ft.ft_month = ptr_tm->tm_mon + 1;
- ft.ft_year = ptr_tm->tm_year - 80;
- res = setftime (fd, &ft);
- close (fd);
- return res;
-}
-#endif
-
-/*
- * Prevent Windows entering sleep/hibernation-mode while wget is doing a lengthy transfer.
- * Windows does by default not consider network activity in console-programs as activity !
- * Works on Win-98/ME/2K and up.
- */
-static
-DWORD set_sleep_mode (DWORD mode)
-{
- HMODULE mod = LoadLibrary ("kernel32.dll");
- DWORD (*_SetThreadExecutionState) (DWORD) = NULL;
- DWORD rc = (DWORD)-1;
-
- if (mod)
- (void*)_SetThreadExecutionState = GetProcAddress ((HINSTANCE)mod, "SetThreadExecutionState");
-
- if (_SetThreadExecutionState)
- {
- if (mode == 0) /* first time */
- mode = (ES_SYSTEM_REQUIRED | ES_CONTINUOUS);
- rc = (*_SetThreadExecutionState) (mode);
- }
- if (mod)
- FreeLibrary (mod);
- DEBUGP (("set_sleep_mode(): mode 0x%08lX, rc 0x%08lX\n", mode, rc));
- return (rc);
-}
\f
-/* run_with_timeout Windows implementation. */
+/* run_with_timeout Windows implementation. */
- /* Stack size 0 uses default thread stack-size (reserve+commit).
- * Determined by what's in the PE header.
- */
+/* Stack size 0 uses default thread stack-size (reserve+commit).
+ Determined by what's in the PE header. */
#define THREAD_STACK_SIZE 0
-struct thread_data {
- void (*fun) (void *);
- void *arg;
- DWORD ws_error;
+struct thread_data
+{
+ void (*fun) (void *);
+ void *arg;
+ DWORD ws_error;
};
/* The callback that runs FUN(ARG) in a separate thread. This
[1] MSVC can use __fastcall globally (cl /Gr) and on Watcom this is
the default (wcc386 -3r). */
-static DWORD WINAPI
+static DWORD WINAPI
thread_helper (void *arg)
{
struct thread_data *td = (struct thread_data *) arg;
/* Return Winsock error to the caller, in case FUN ran Winsock
code. */
- td->ws_error = WSAGetLastError();
- return 0;
+ td->ws_error = WSAGetLastError ();
+ return 0;
}
-/*
- * Run FUN with timeout. This is done by creating a thread for 'fun'
- * to run in and terminating the thread if it doesn't finish in
- * SECONDS time.
- */
+/* Call FUN(ARG), but don't allow it to run for more than TIMEOUT
+ seconds. Returns true if the function was interrupted with a
+ timeout, false otherwise.
-int
+ This works by running FUN in a separate thread and terminating the
+ thread if it doesn't finish in the specified time. */
+
+bool
run_with_timeout (double seconds, void (*fun) (void *), void *arg)
{
- static HANDLE thread_hnd = NULL;
+ HANDLE thread_hnd;
struct thread_data thread_arg;
- DWORD thread_id;
- int rc = 0;
+ DWORD thread_id;
+ bool rc;
DEBUGP (("seconds %.2f, ", seconds));
-
+
if (seconds == 0)
{
blocking_fallback:
fun (arg);
- return 0;
+ return false;
}
- /* Should never happen, but test for recursivety anyway */
- assert (thread_hnd == NULL);
-
thread_arg.fun = fun;
thread_arg.arg = arg;
thread_arg.ws_error = WSAGetLastError ();
thread_hnd = CreateThread (NULL, THREAD_STACK_SIZE, thread_helper,
- &thread_arg, 0, &thread_id);
+ &thread_arg, 0, &thread_id);
if (!thread_hnd)
{
- DEBUGP (("CreateThread() failed; %s\n", strerror(GetLastError())));
+ DEBUGP (("CreateThread() failed; [0x%x]\n", GetLastError ()));
goto blocking_fallback;
}
- if (WaitForSingleObject(thread_hnd, (DWORD)(1000*seconds)) == WAIT_OBJECT_0)
+ if (WaitForSingleObject (thread_hnd, (DWORD)(1000 * seconds))
+ == WAIT_OBJECT_0)
{
/* Propagate error state (which is per-thread) to this thread,
so the caller can inspect it. */
WSASetLastError (thread_arg.ws_error);
- DEBUGP (("Winsock error: %d\n", WSAGetLastError()));
- rc = 0;
+ DEBUGP (("Winsock error: %d\n", WSAGetLastError ()));
+ rc = false;
}
else
{
TerminateThread (thread_hnd, 1);
- rc = 1;
+ rc = true;
}
- CloseHandle (thread_hnd); /* clear-up after TerminateThread() */
+ CloseHandle (thread_hnd); /* Clear-up after TerminateThread(). */
thread_hnd = NULL;
return rc;
}
+\f
+/* Wget expects network calls such as connect, recv, send, etc., to set
+ errno on failure. To achieve that, Winsock calls are wrapped with code
+ that, in case of error, sets errno to the value of WSAGetLastError().
+ In addition, we provide a wrapper around strerror, which recognizes
+ Winsock errors and prints the appropriate error message. */
+
+/* Define a macro that creates a function definition that wraps FUN into
+ a function that sets errno the way the rest of the code expects. */
+
+#define WRAP(fun, decl, call) int wrapped_##fun decl { \
+ int retval = fun call; \
+ if (retval < 0) \
+ errno = WSAGetLastError (); \
+ return retval; \
+}
+
+WRAP (socket, (int domain, int type, int protocol), (domain, type, protocol))
+WRAP (bind, (int s, struct sockaddr *a, int alen), (s, a, alen))
+WRAP (connect, (int s, const struct sockaddr *a, int alen), (s, a, alen))
+WRAP (listen, (int s, int backlog), (s, backlog))
+WRAP (accept, (int s, struct sockaddr *a, int *alen), (s, a, alen))
+WRAP (recv, (int s, void *buf, int len, int flags), (s, buf, len, flags))
+WRAP (send, (int s, const void *buf, int len, int flags), (s, buf, len, flags))
+WRAP (select, (int n, fd_set *r, fd_set *w, fd_set *e, const struct timeval *tm),
+ (n, r, w, e, tm))
+WRAP (getsockname, (int s, struct sockaddr *n, int *nlen), (s, n, nlen))
+WRAP (getpeername, (int s, struct sockaddr *n, int *nlen), (s, n, nlen))
+WRAP (setsockopt, (int s, int level, int opt, const void *val, int len),
+ (s, level, opt, val, len))
+WRAP (closesocket, (int s), (s))
+
+/* Return the text of the error message for Winsock error WSERR. */
+
+static const char *
+get_winsock_error (int wserr)
+{
+ switch (wserr) {
+ case WSAEINTR: return "Interrupted system call";
+ case WSAEBADF: return "Bad file number";
+ case WSAEACCES: return "Permission denied";
+ case WSAEFAULT: return "Bad address";
+ case WSAEINVAL: return "Invalid argument";
+ case WSAEMFILE: return "Too many open files";
+ case WSAEWOULDBLOCK: return "Resource temporarily unavailable";
+ case WSAEINPROGRESS: return "Operation now in progress";
+ case WSAEALREADY: return "Operation already in progress";
+ case WSAENOTSOCK: return "Socket operation on nonsocket";
+ case WSAEDESTADDRREQ: return "Destination address required";
+ case WSAEMSGSIZE: return "Message too long";
+ case WSAEPROTOTYPE: return "Protocol wrong type for socket";
+ case WSAENOPROTOOPT: return "Bad protocol option";
+ case WSAEPROTONOSUPPORT: return "Protocol not supported";
+ case WSAESOCKTNOSUPPORT: return "Socket type not supported";
+ case WSAEOPNOTSUPP: return "Operation not supported";
+ case WSAEPFNOSUPPORT: return "Protocol family not supported";
+ case WSAEAFNOSUPPORT: return "Address family not supported by protocol family";
+ case WSAEADDRINUSE: return "Address already in use";
+ case WSAEADDRNOTAVAIL: return "Cannot assign requested address";
+ case WSAENETDOWN: return "Network is down";
+ case WSAENETUNREACH: return "Network is unreachable";
+ case WSAENETRESET: return "Network dropped connection on reset";
+ case WSAECONNABORTED: return "Software caused connection abort";
+ case WSAECONNRESET: return "Connection reset by peer";
+ case WSAENOBUFS: return "No buffer space available";
+ case WSAEISCONN: return "Socket is already connected";
+ case WSAENOTCONN: return "Socket is not connected";
+ case WSAESHUTDOWN: return "Cannot send after socket shutdown";
+ case WSAETOOMANYREFS: return "Too many references";
+ case WSAETIMEDOUT: return "Connection timed out";
+ case WSAECONNREFUSED: return "Connection refused";
+ case WSAELOOP: return "Too many levels of symbolic links";
+ case WSAENAMETOOLONG: return "File name too long";
+ case WSAEHOSTDOWN: return "Host is down";
+ case WSAEHOSTUNREACH: return "No route to host";
+ case WSAENOTEMPTY: return "Not empty";
+ case WSAEPROCLIM: return "Too many processes";
+ case WSAEUSERS: return "Too many users";
+ case WSAEDQUOT: return "Bad quota";
+ case WSAESTALE: return "Something is stale";
+ case WSAEREMOTE: return "Remote error";
+ case WSAEDISCON: return "Disconnected";
+
+ /* Extended Winsock errors */
+ case WSASYSNOTREADY: return "Winsock library is not ready";
+ case WSANOTINITIALISED: return "Winsock library not initalised";
+ case WSAVERNOTSUPPORTED: return "Winsock version not supported";
+
+ case WSAHOST_NOT_FOUND: return "Host not found";
+ case WSATRY_AGAIN: return "Host not found, try again";
+ case WSANO_RECOVERY: return "Unrecoverable error in call to nameserver";
+ case WSANO_DATA: return "No data record of requested type";
+
+ default:
+ return NULL;
+ }
+}
+
+/* Return the error message corresponding to ERR. This is different
+ from Windows libc strerror() in that it handles Winsock errors
+ correctly. */
+
+const char *
+windows_strerror (int err)
+{
+ const char *p;
+ if (err >= 0 && err < sys_nerr)
+ return strerror (err);
+ else if ((p = get_winsock_error (err)) != NULL)
+ return p;
+ else
+ {
+ static char buf[32];
+ snprintf (buf, sizeof (buf), "Unknown error %d (%#x)", err, err);
+ return buf;
+ }
+}
+\f
+#ifdef ENABLE_IPV6
+/* An inet_ntop implementation that uses WSAAddressToString.
+ Prototype complies with POSIX 1003.1-2004. This is only used under
+ IPv6 because Wget prints IPv4 addresses using inet_ntoa. */
+
+const char *
+inet_ntop (int af, const void *src, char *dst, socklen_t cnt)
+{
+ /* struct sockaddr can't accomodate struct sockaddr_in6. */
+ union {
+ struct sockaddr_in6 sin6;
+ struct sockaddr_in sin;
+ } sa;
+ DWORD dstlen = cnt;
+ size_t srcsize;
+
+ xzero (sa);
+ switch (af)
+ {
+ case AF_INET:
+ sa.sin.sin_family = AF_INET;
+ sa.sin.sin_addr = *(struct in_addr *) src;
+ srcsize = sizeof (sa.sin);
+ break;
+ case AF_INET6:
+ sa.sin6.sin6_family = AF_INET6;
+ sa.sin6.sin6_addr = *(struct in6_addr *) src;
+ srcsize = sizeof (sa.sin6);
+ break;
+ default:
+ abort ();
+ }
+
+ if (WSAAddressToString ((struct sockaddr *) &sa, srcsize, NULL, dst, &dstlen) != 0)
+ {
+ errno = WSAGetLastError();
+ return NULL;
+ }
+ return (const char *) dst;
+}
+#endif
projects / wget / blobdiff