2 * winsftp.c: the Windows-specific parts of PSFTP and PSCP.
10 /* ----------------------------------------------------------------------
11 * Interface to GUI driver program.
14 /* This is just a base value from which the main message numbers are
16 #define WM_APP_BASE 0x8000
18 /* These two pass a single character value in wParam. They represent
19 * the visible output from PSCP. */
20 #define WM_STD_OUT_CHAR ( WM_APP_BASE+400 )
21 #define WM_STD_ERR_CHAR ( WM_APP_BASE+401 )
23 /* These pass a transfer status update. WM_STATS_CHAR passes a single
24 * character in wParam, and is called repeatedly to pass the name of
25 * the file, terminated with "\n". WM_STATS_SIZE passes the size of
26 * the file being transferred in wParam. WM_STATS_ELAPSED is called
27 * to pass the elapsed time (in seconds) in wParam, and
28 * WM_STATS_PERCENT passes the percentage of the transfer which is
29 * complete, also in wParam. */
30 #define WM_STATS_CHAR ( WM_APP_BASE+402 )
31 #define WM_STATS_SIZE ( WM_APP_BASE+403 )
32 #define WM_STATS_PERCENT ( WM_APP_BASE+404 )
33 #define WM_STATS_ELAPSED ( WM_APP_BASE+405 )
35 /* These are used at the end of a run to pass an error code in
36 * wParam: zero means success, nonzero means failure. WM_RET_ERR_CNT
37 * is used after a copy, and WM_LS_RET_ERR_CNT is used after a file
39 #define WM_RET_ERR_CNT ( WM_APP_BASE+406 )
40 #define WM_LS_RET_ERR_CNT ( WM_APP_BASE+407 )
42 /* More transfer status update messages. WM_STATS_DONE passes the
43 * number of bytes sent so far in wParam. WM_STATS_ETA passes the
44 * estimated time to completion (in seconds). WM_STATS_RATEBS passes
45 * the average transfer rate (in bytes per second). */
46 #define WM_STATS_DONE ( WM_APP_BASE+408 )
47 #define WM_STATS_ETA ( WM_APP_BASE+409 )
48 #define WM_STATS_RATEBS ( WM_APP_BASE+410 )
50 #define NAME_STR_MAX 2048
51 static char statname[NAME_STR_MAX + 1];
52 static unsigned long statsize = 0;
53 static unsigned long statdone = 0;
54 static unsigned long stateta = 0;
55 static unsigned long statratebs = 0;
56 static int statperct = 0;
57 static unsigned long statelapsed = 0;
59 static HWND gui_hwnd = NULL;
61 static void send_msg(HWND h, UINT message, WPARAM wParam)
63 while (!PostMessage(h, message, wParam, 0))
67 void gui_send_char(int is_stderr, int c)
69 unsigned int msg_id = WM_STD_OUT_CHAR;
71 msg_id = WM_STD_ERR_CHAR;
72 send_msg(gui_hwnd, msg_id, (WPARAM) c);
75 void gui_send_errcount(int list, int errs)
77 unsigned int msg_id = WM_RET_ERR_CNT;
79 msg_id = WM_LS_RET_ERR_CNT;
80 while (!PostMessage(gui_hwnd, msg_id, (WPARAM) errs, 0))
84 void gui_update_stats(char *name, unsigned long size,
85 int percentage, unsigned long elapsed,
86 unsigned long done, unsigned long eta,
91 if (strcmp(name, statname) != 0) {
92 for (i = 0; i < strlen(name); ++i)
93 send_msg(gui_hwnd, WM_STATS_CHAR, (WPARAM) name[i]);
94 send_msg(gui_hwnd, WM_STATS_CHAR, (WPARAM) '\n');
95 strcpy(statname, name);
97 if (statsize != size) {
98 send_msg(gui_hwnd, WM_STATS_SIZE, (WPARAM) size);
101 if (statdone != done) {
102 send_msg(gui_hwnd, WM_STATS_DONE, (WPARAM) done);
105 if (stateta != eta) {
106 send_msg(gui_hwnd, WM_STATS_ETA, (WPARAM) eta);
109 if (statratebs != ratebs) {
110 send_msg(gui_hwnd, WM_STATS_RATEBS, (WPARAM) ratebs);
113 if (statelapsed != elapsed) {
114 send_msg(gui_hwnd, WM_STATS_ELAPSED, (WPARAM) elapsed);
115 statelapsed = elapsed;
117 if (statperct != percentage) {
118 send_msg(gui_hwnd, WM_STATS_PERCENT, (WPARAM) percentage);
119 statperct = percentage;
123 void gui_enable(char *arg)
125 gui_hwnd = (HWND) atoi(arg);
128 /* ----------------------------------------------------------------------
129 * File access abstraction.
133 * Set local current directory. Returns NULL on success, or else an
134 * error message which must be freed after printing.
136 char *psftp_lcd(char *dir)
140 if (!SetCurrentDirectory(dir)) {
143 FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
144 FORMAT_MESSAGE_FROM_SYSTEM |
145 FORMAT_MESSAGE_IGNORE_INSERTS,
146 NULL, GetLastError(),
147 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
148 (LPTSTR)&message, 0, NULL);
149 i = strcspn((char *)message, "\n");
150 ret = dupprintf("%.*s", i, (LPCTSTR)message);
158 * Get local current directory. Returns a string which must be
161 char *psftp_getcwd(void)
163 char *ret = snewn(256, char);
164 int len = GetCurrentDirectory(256, ret);
166 ret = sresize(ret, len, char);
167 GetCurrentDirectory(len, ret);
171 #define TIME_POSIX_TO_WIN(t, ft) (*(LONGLONG*)&(ft) = \
172 ((LONGLONG) (t) + (LONGLONG) 11644473600) * (LONGLONG) 10000000)
173 #define TIME_WIN_TO_POSIX(ft, t) ((t) = (unsigned long) \
174 ((*(LONGLONG*)&(ft)) / (LONGLONG) 10000000 - (LONGLONG) 11644473600))
180 RFile *open_existing_file(char *name, unsigned long *size,
181 unsigned long *mtime, unsigned long *atime)
186 h = CreateFile(name, GENERIC_READ, FILE_SHARE_READ, NULL,
187 OPEN_EXISTING, 0, 0);
188 if (h == INVALID_HANDLE_VALUE)
195 *size = GetFileSize(h, NULL);
197 if (mtime || atime) {
198 FILETIME actime, wrtime;
199 GetFileTime(h, NULL, &actime, &wrtime);
201 TIME_WIN_TO_POSIX(actime, *atime);
203 TIME_WIN_TO_POSIX(wrtime, *mtime);
209 int read_from_file(RFile *f, void *buffer, int length)
212 ret = ReadFile(f->h, buffer, length, &read, NULL);
214 return -1; /* error */
219 void close_rfile(RFile *f)
229 WFile *open_new_file(char *name)
234 h = CreateFile(name, GENERIC_WRITE, 0, NULL,
235 CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0);
236 if (h == INVALID_HANDLE_VALUE)
245 int write_to_file(WFile *f, void *buffer, int length)
248 ret = WriteFile(f->h, buffer, length, &written, NULL);
250 return -1; /* error */
255 void set_file_times(WFile *f, unsigned long mtime, unsigned long atime)
257 FILETIME actime, wrtime;
258 TIME_POSIX_TO_WIN(atime, actime);
259 TIME_POSIX_TO_WIN(mtime, wrtime);
260 SetFileTime(f->h, NULL, &actime, &wrtime);
263 void close_wfile(WFile *f)
269 int file_type(char *name)
272 attr = GetFileAttributes(name);
273 /* We know of no `weird' files under Windows. */
274 if (attr == (DWORD)-1)
275 return FILE_TYPE_NONEXISTENT;
276 else if (attr & FILE_ATTRIBUTE_DIRECTORY)
277 return FILE_TYPE_DIRECTORY;
279 return FILE_TYPE_FILE;
287 DirHandle *open_directory(char *name)
290 WIN32_FIND_DATA fdat;
294 /* Enumerate files in dir `foo'. */
295 findfile = dupcat(name, "/*", NULL);
296 h = FindFirstFile(findfile, &fdat);
297 if (h == INVALID_HANDLE_VALUE)
301 ret = snew(DirHandle);
303 ret->name = dupstr(fdat.cFileName);
307 char *read_filename(DirHandle *dir)
312 WIN32_FIND_DATA fdat;
313 int ok = FindNextFile(dir->h, &fdat);
317 dir->name = dupstr(fdat.cFileName);
321 if (dir->name[0] == '.' &&
322 (dir->name[1] == '\0' ||
323 (dir->name[1] == '.' && dir->name[2] == '\0'))) {
328 } while (!dir->name);
331 char *ret = dir->name;
338 void close_directory(DirHandle *dir)
346 int test_wildcard(char *name, int cmdline)
349 WIN32_FIND_DATA fdat;
351 /* First see if the exact name exists. */
352 if (GetFileAttributes(name) != (DWORD)-1)
353 return WCTYPE_FILENAME;
355 /* Otherwise see if a wildcard match finds anything. */
356 fh = FindFirstFile(name, &fdat);
357 if (fh == INVALID_HANDLE_VALUE)
358 return WCTYPE_NONEXISTENT;
361 return WCTYPE_WILDCARD;
364 struct WildcardMatcher {
371 * Return a pointer to the portion of str that comes after the last
372 * slash (or backslash or colon, if `local' is TRUE).
374 static char *stripslashes(char *str, int local)
379 p = strchr(str, ':');
383 p = strrchr(str, '/');
387 p = strrchr(str, '\\');
394 WildcardMatcher *begin_wildcard_matching(char *name)
397 WIN32_FIND_DATA fdat;
398 WildcardMatcher *ret;
401 h = FindFirstFile(name, &fdat);
402 if (h == INVALID_HANDLE_VALUE)
405 ret = snew(WildcardMatcher);
407 ret->srcpath = dupstr(name);
408 last = stripslashes(ret->srcpath, 1);
410 if (fdat.cFileName[0] == '.' &&
411 (fdat.cFileName[1] == '\0' ||
412 (fdat.cFileName[1] == '.' && fdat.cFileName[2] == '\0')))
415 ret->name = dupcat(ret->srcpath, fdat.cFileName, NULL);
420 char *wildcard_get_filename(WildcardMatcher *dir)
423 WIN32_FIND_DATA fdat;
424 int ok = FindNextFile(dir->h, &fdat);
429 if (fdat.cFileName[0] == '.' &&
430 (fdat.cFileName[1] == '\0' ||
431 (fdat.cFileName[1] == '.' && fdat.cFileName[2] == '\0')))
434 dir->name = dupcat(dir->srcpath, fdat.cFileName, NULL);
438 char *ret = dir->name;
445 void finish_wildcard_matching(WildcardMatcher *dir)
454 int vet_filename(char *name)
456 if (strchr(name, '/') || strchr(name, '\\') || strchr(name, ':'))
459 if (!name[strspn(name, ".")]) /* entirely composed of dots */
465 int create_directory(char *name)
467 return CreateDirectory(name, NULL) != 0;
470 char *dir_file_cat(char *dir, char *file)
472 return dupcat(dir, "\\", file, NULL);
475 /* ----------------------------------------------------------------------
476 * Platform-specific network handling.
480 * Be told what socket we're supposed to be using.
482 static SOCKET sftp_ssh_socket = INVALID_SOCKET;
483 static HANDLE netevent = NULL;
484 char *do_select(SOCKET skt, int startup)
488 sftp_ssh_socket = skt;
490 sftp_ssh_socket = INVALID_SOCKET;
492 if (p_WSAEventSelect) {
494 events = (FD_CONNECT | FD_READ | FD_WRITE |
495 FD_OOB | FD_CLOSE | FD_ACCEPT);
496 netevent = CreateEvent(NULL, FALSE, FALSE, NULL);
500 if (p_WSAEventSelect(skt, netevent, events) == SOCKET_ERROR) {
501 switch (p_WSAGetLastError()) {
503 return "Network is down";
505 return "WSAEventSelect(): unknown error";
511 extern int select_result(WPARAM, LPARAM);
513 int do_eventsel_loop(HANDLE other_event)
520 long now = GETTICKCOUNT();
523 return -1; /* doom */
526 handles[0] = netevent;
527 handles[1] = other_event;
529 if (run_timers(now, &next)) {
530 ticks = next - GETTICKCOUNT();
531 if (ticks < 0) ticks = 0; /* just in case */
536 n = MsgWaitForMultipleObjects(other_event ? 2 : 1, handles, FALSE, ticks,
539 if (n == WAIT_OBJECT_0 + 0) {
540 WSANETWORKEVENTS things;
542 extern SOCKET first_socket(int *), next_socket(int *);
543 extern int select_result(WPARAM, LPARAM);
547 * We must not call select_result() for any socket
548 * until we have finished enumerating within the
549 * tree. This is because select_result() may close
550 * the socket and modify the tree.
552 /* Count the active sockets. */
554 for (socket = first_socket(&socketstate);
555 socket != INVALID_SOCKET;
556 socket = next_socket(&socketstate)) i++;
558 /* Expand the buffer if necessary. */
559 sklist = snewn(i, SOCKET);
561 /* Retrieve the sockets into sklist. */
563 for (socket = first_socket(&socketstate);
564 socket != INVALID_SOCKET;
565 socket = next_socket(&socketstate)) {
566 sklist[skcount++] = socket;
569 /* Now we're done enumerating; go through the list. */
570 for (i = 0; i < skcount; i++) {
573 wp = (WPARAM) socket;
574 if (!p_WSAEnumNetworkEvents(socket, NULL, &things)) {
575 static const struct { int bit, mask; } eventtypes[] = {
576 {FD_CONNECT_BIT, FD_CONNECT},
577 {FD_READ_BIT, FD_READ},
578 {FD_CLOSE_BIT, FD_CLOSE},
579 {FD_OOB_BIT, FD_OOB},
580 {FD_WRITE_BIT, FD_WRITE},
581 {FD_ACCEPT_BIT, FD_ACCEPT},
585 noise_ultralight(socket);
586 noise_ultralight(things.lNetworkEvents);
588 for (e = 0; e < lenof(eventtypes); e++)
589 if (things.lNetworkEvents & eventtypes[e].mask) {
591 int err = things.iErrorCode[eventtypes[e].bit];
592 lp = WSAMAKESELECTREPLY(eventtypes[e].mask, err);
593 select_result(wp, lp);
601 if (n == WAIT_TIMEOUT) {
604 now = GETTICKCOUNT();
607 if (other_event && n == WAIT_OBJECT_0 + 1)
614 * Wait for some network data and process it.
616 * We have two variants of this function. One uses select() so that
617 * it's compatible with WinSock 1. The other uses WSAEventSelect
618 * and MsgWaitForMultipleObjects, so that we can consistently use
619 * WSAEventSelect throughout; this enables us to also implement
620 * ssh_sftp_get_cmdline() using a parallel mechanism.
622 int ssh_sftp_loop_iteration(void)
624 if (sftp_ssh_socket == INVALID_SOCKET)
625 return -1; /* doom */
627 if (p_WSAEventSelect == NULL) {
630 long now = GETTICKCOUNT();
632 if (socket_writable(sftp_ssh_socket))
633 select_result((WPARAM) sftp_ssh_socket, (LPARAM) FD_WRITE);
637 struct timeval tv, *ptv;
639 if (run_timers(now, &next)) {
640 ticks = next - GETTICKCOUNT();
642 ticks = 1; /* just in case */
643 tv.tv_sec = ticks / 1000;
644 tv.tv_usec = ticks % 1000 * 1000;
651 FD_SET(sftp_ssh_socket, &readfds);
652 ret = p_select(1, &readfds, NULL, NULL, ptv);
655 return -1; /* doom */
659 now = GETTICKCOUNT();
663 select_result((WPARAM) sftp_ssh_socket, (LPARAM) FD_READ);
667 return do_eventsel_loop(NULL);
672 * Read a command line from standard input.
674 * In the presence of WinSock 2, we can use WSAEventSelect to
675 * mediate between the socket and stdin, meaning we can send
676 * keepalives and respond to server events even while waiting at
677 * the PSFTP command prompt. Without WS2, we fall back to a simple
680 struct command_read_ctx {
685 static DWORD WINAPI command_read_thread(void *param)
687 struct command_read_ctx *ctx = (struct command_read_ctx *) param;
689 ctx->line = fgetline(stdin);
691 SetEvent(ctx->event);
696 char *ssh_sftp_get_cmdline(char *prompt, int no_fds_ok)
699 struct command_read_ctx actx, *ctx = &actx;
702 fputs(prompt, stdout);
705 if ((sftp_ssh_socket == INVALID_SOCKET && no_fds_ok) ||
706 p_WSAEventSelect == NULL) {
707 return fgetline(stdin); /* very simple */
711 * Create a second thread to read from stdin. Process network
712 * and timing events until it terminates.
714 ctx->event = CreateEvent(NULL, FALSE, FALSE, NULL);
717 if (!CreateThread(NULL, 0, command_read_thread,
718 ctx, 0, &threadid)) {
719 fprintf(stderr, "Unable to create command input thread\n");
724 ret = do_eventsel_loop(ctx->event);
726 /* Error return can only occur if netevent==NULL, and it ain't. */
733 /* ----------------------------------------------------------------------
734 * Main program. Parse arguments etc.
736 int main(int argc, char *argv[])
740 ret = psftp_main(argc, argv);