d6cc41e6 |
1 | /* |
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2 | * winsftp.c: the Windows-specific parts of PSFTP and PSCP. |
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3 | */ |
4 | |
39934deb |
5 | #include <assert.h> |
6 | |
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7 | #include "putty.h" |
8 | #include "psftp.h" |
9 | |
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10 | /* ---------------------------------------------------------------------- |
11 | * Interface to GUI driver program. |
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12 | */ |
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13 | |
14 | /* This is just a base value from which the main message numbers are |
15 | * derived. */ |
16 | #define WM_APP_BASE 0x8000 |
17 | |
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 ) |
22 | |
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 ) |
34 | |
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 |
38 | * list operation. */ |
39 | #define WM_RET_ERR_CNT ( WM_APP_BASE+406 ) |
40 | #define WM_LS_RET_ERR_CNT ( WM_APP_BASE+407 ) |
41 | |
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 ) |
49 | |
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; |
58 | |
59 | static HWND gui_hwnd = NULL; |
60 | |
61 | static void send_msg(HWND h, UINT message, WPARAM wParam) |
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62 | { |
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63 | while (!PostMessage(h, message, wParam, 0)) |
64 | SleepEx(1000, TRUE); |
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65 | } |
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66 | |
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67 | void gui_send_char(int is_stderr, int c) |
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68 | { |
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69 | unsigned int msg_id = WM_STD_OUT_CHAR; |
70 | if (is_stderr) |
71 | msg_id = WM_STD_ERR_CHAR; |
72 | send_msg(gui_hwnd, msg_id, (WPARAM) c); |
73 | } |
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74 | |
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75 | void gui_send_errcount(int list, int errs) |
76 | { |
77 | unsigned int msg_id = WM_RET_ERR_CNT; |
78 | if (list) |
79 | msg_id = WM_LS_RET_ERR_CNT; |
80 | while (!PostMessage(gui_hwnd, msg_id, (WPARAM) errs, 0)) |
81 | SleepEx(1000, TRUE); |
82 | } |
83 | |
84 | void gui_update_stats(char *name, unsigned long size, |
85 | int percentage, unsigned long elapsed, |
86 | unsigned long done, unsigned long eta, |
87 | unsigned long ratebs) |
88 | { |
89 | unsigned int i; |
90 | |
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); |
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96 | } |
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97 | if (statsize != size) { |
98 | send_msg(gui_hwnd, WM_STATS_SIZE, (WPARAM) size); |
99 | statsize = size; |
100 | } |
101 | if (statdone != done) { |
102 | send_msg(gui_hwnd, WM_STATS_DONE, (WPARAM) done); |
103 | statdone = done; |
104 | } |
105 | if (stateta != eta) { |
106 | send_msg(gui_hwnd, WM_STATS_ETA, (WPARAM) eta); |
107 | stateta = eta; |
108 | } |
109 | if (statratebs != ratebs) { |
110 | send_msg(gui_hwnd, WM_STATS_RATEBS, (WPARAM) ratebs); |
111 | statratebs = ratebs; |
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112 | } |
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113 | if (statelapsed != elapsed) { |
114 | send_msg(gui_hwnd, WM_STATS_ELAPSED, (WPARAM) elapsed); |
115 | statelapsed = elapsed; |
116 | } |
117 | if (statperct != percentage) { |
118 | send_msg(gui_hwnd, WM_STATS_PERCENT, (WPARAM) percentage); |
119 | statperct = percentage; |
120 | } |
121 | } |
122 | |
123 | void gui_enable(char *arg) |
124 | { |
125 | gui_hwnd = (HWND) atoi(arg); |
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126 | } |
127 | |
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128 | /* ---------------------------------------------------------------------- |
129 | * File access abstraction. |
130 | */ |
131 | |
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132 | /* |
133 | * Set local current directory. Returns NULL on success, or else an |
134 | * error message which must be freed after printing. |
135 | */ |
136 | char *psftp_lcd(char *dir) |
137 | { |
138 | char *ret = NULL; |
139 | |
140 | if (!SetCurrentDirectory(dir)) { |
141 | LPVOID message; |
142 | int i; |
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); |
151 | LocalFree(message); |
152 | } |
153 | |
154 | return ret; |
155 | } |
156 | |
157 | /* |
158 | * Get local current directory. Returns a string which must be |
159 | * freed. |
160 | */ |
161 | char *psftp_getcwd(void) |
162 | { |
163 | char *ret = snewn(256, char); |
164 | int len = GetCurrentDirectory(256, ret); |
165 | if (len > 256) |
166 | ret = sresize(ret, len, char); |
167 | GetCurrentDirectory(len, ret); |
168 | return ret; |
169 | } |
170 | |
799dfcfa |
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)) |
175 | |
176 | struct RFile { |
177 | HANDLE h; |
178 | }; |
179 | |
180 | RFile *open_existing_file(char *name, unsigned long *size, |
181 | unsigned long *mtime, unsigned long *atime) |
182 | { |
183 | HANDLE h; |
184 | RFile *ret; |
185 | |
186 | h = CreateFile(name, GENERIC_READ, FILE_SHARE_READ, NULL, |
187 | OPEN_EXISTING, 0, 0); |
188 | if (h == INVALID_HANDLE_VALUE) |
189 | return NULL; |
190 | |
191 | ret = snew(RFile); |
192 | ret->h = h; |
193 | |
194 | if (size) |
195 | *size = GetFileSize(h, NULL); |
196 | |
197 | if (mtime || atime) { |
198 | FILETIME actime, wrtime; |
199 | GetFileTime(h, NULL, &actime, &wrtime); |
200 | if (atime) |
201 | TIME_WIN_TO_POSIX(actime, *atime); |
202 | if (mtime) |
203 | TIME_WIN_TO_POSIX(wrtime, *mtime); |
204 | } |
205 | |
206 | return ret; |
207 | } |
208 | |
209 | int read_from_file(RFile *f, void *buffer, int length) |
210 | { |
211 | int ret, read; |
212 | ret = ReadFile(f->h, buffer, length, &read, NULL); |
213 | if (!ret) |
214 | return -1; /* error */ |
215 | else |
216 | return read; |
217 | } |
218 | |
219 | void close_rfile(RFile *f) |
220 | { |
221 | CloseHandle(f->h); |
222 | sfree(f); |
223 | } |
224 | |
225 | struct WFile { |
226 | HANDLE h; |
227 | }; |
228 | |
229 | WFile *open_new_file(char *name) |
230 | { |
231 | HANDLE h; |
232 | WFile *ret; |
233 | |
234 | h = CreateFile(name, GENERIC_WRITE, 0, NULL, |
235 | CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0); |
236 | if (h == INVALID_HANDLE_VALUE) |
237 | return NULL; |
238 | |
239 | ret = snew(WFile); |
240 | ret->h = h; |
241 | |
242 | return ret; |
243 | } |
244 | |
245 | int write_to_file(WFile *f, void *buffer, int length) |
246 | { |
247 | int ret, written; |
248 | ret = WriteFile(f->h, buffer, length, &written, NULL); |
249 | if (!ret) |
250 | return -1; /* error */ |
251 | else |
252 | return written; |
253 | } |
254 | |
255 | void set_file_times(WFile *f, unsigned long mtime, unsigned long atime) |
256 | { |
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); |
261 | } |
262 | |
263 | void close_wfile(WFile *f) |
264 | { |
265 | CloseHandle(f->h); |
266 | sfree(f); |
267 | } |
268 | |
269 | int file_type(char *name) |
270 | { |
271 | DWORD attr; |
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; |
278 | else |
279 | return FILE_TYPE_FILE; |
280 | } |
281 | |
282 | struct DirHandle { |
283 | HANDLE h; |
284 | char *name; |
285 | }; |
286 | |
287 | DirHandle *open_directory(char *name) |
288 | { |
289 | HANDLE h; |
290 | WIN32_FIND_DATA fdat; |
291 | char *findfile; |
292 | DirHandle *ret; |
293 | |
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294 | /* Enumerate files in dir `foo'. */ |
799dfcfa |
295 | findfile = dupcat(name, "/*", NULL); |
296 | h = FindFirstFile(findfile, &fdat); |
297 | if (h == INVALID_HANDLE_VALUE) |
298 | return NULL; |
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299 | sfree(findfile); |
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300 | |
301 | ret = snew(DirHandle); |
302 | ret->h = h; |
303 | ret->name = dupstr(fdat.cFileName); |
304 | return ret; |
305 | } |
306 | |
307 | char *read_filename(DirHandle *dir) |
308 | { |
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309 | while (!dir->name) { |
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310 | WIN32_FIND_DATA fdat; |
311 | int ok = FindNextFile(dir->h, &fdat); |
312 | |
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313 | if (!ok) |
314 | return NULL; |
315 | |
316 | if (fdat.cFileName[0] == '.' && |
317 | (fdat.cFileName[1] == '\0' || |
318 | (fdat.cFileName[1] == '.' && fdat.cFileName[2] == '\0'))) |
319 | dir->name = NULL; |
320 | else |
799dfcfa |
321 | dir->name = dupstr(fdat.cFileName); |
322 | } |
323 | |
324 | if (dir->name) { |
325 | char *ret = dir->name; |
326 | dir->name = NULL; |
327 | return ret; |
328 | } else |
329 | return NULL; |
330 | } |
331 | |
332 | void close_directory(DirHandle *dir) |
333 | { |
334 | FindClose(dir->h); |
335 | if (dir->name) |
336 | sfree(dir->name); |
337 | sfree(dir); |
338 | } |
339 | |
340 | int test_wildcard(char *name, int cmdline) |
341 | { |
342 | HANDLE fh; |
343 | WIN32_FIND_DATA fdat; |
344 | |
345 | /* First see if the exact name exists. */ |
346 | if (GetFileAttributes(name) != (DWORD)-1) |
347 | return WCTYPE_FILENAME; |
348 | |
349 | /* Otherwise see if a wildcard match finds anything. */ |
350 | fh = FindFirstFile(name, &fdat); |
351 | if (fh == INVALID_HANDLE_VALUE) |
352 | return WCTYPE_NONEXISTENT; |
353 | |
354 | FindClose(fh); |
355 | return WCTYPE_WILDCARD; |
356 | } |
357 | |
358 | struct WildcardMatcher { |
359 | HANDLE h; |
360 | char *name; |
361 | char *srcpath; |
362 | }; |
363 | |
364 | /* |
365 | * Return a pointer to the portion of str that comes after the last |
366 | * slash (or backslash or colon, if `local' is TRUE). |
367 | */ |
368 | static char *stripslashes(char *str, int local) |
369 | { |
370 | char *p; |
371 | |
372 | if (local) { |
373 | p = strchr(str, ':'); |
374 | if (p) str = p+1; |
375 | } |
376 | |
377 | p = strrchr(str, '/'); |
378 | if (p) str = p+1; |
379 | |
380 | if (local) { |
381 | p = strrchr(str, '\\'); |
382 | if (p) str = p+1; |
383 | } |
384 | |
385 | return str; |
386 | } |
387 | |
388 | WildcardMatcher *begin_wildcard_matching(char *name) |
389 | { |
390 | HANDLE h; |
391 | WIN32_FIND_DATA fdat; |
392 | WildcardMatcher *ret; |
393 | char *last; |
394 | |
395 | h = FindFirstFile(name, &fdat); |
396 | if (h == INVALID_HANDLE_VALUE) |
397 | return NULL; |
398 | |
399 | ret = snew(WildcardMatcher); |
400 | ret->h = h; |
401 | ret->srcpath = dupstr(name); |
402 | last = stripslashes(ret->srcpath, 1); |
403 | *last = '\0'; |
404 | if (fdat.cFileName[0] == '.' && |
405 | (fdat.cFileName[1] == '\0' || |
406 | (fdat.cFileName[1] == '.' && fdat.cFileName[2] == '\0'))) |
407 | ret->name = NULL; |
408 | else |
409 | ret->name = dupcat(ret->srcpath, fdat.cFileName, NULL); |
410 | |
411 | return ret; |
412 | } |
413 | |
414 | char *wildcard_get_filename(WildcardMatcher *dir) |
415 | { |
416 | while (!dir->name) { |
417 | WIN32_FIND_DATA fdat; |
418 | int ok = FindNextFile(dir->h, &fdat); |
419 | |
420 | if (!ok) |
421 | return NULL; |
422 | |
423 | if (fdat.cFileName[0] == '.' && |
424 | (fdat.cFileName[1] == '\0' || |
425 | (fdat.cFileName[1] == '.' && fdat.cFileName[2] == '\0'))) |
426 | dir->name = NULL; |
427 | else |
428 | dir->name = dupcat(dir->srcpath, fdat.cFileName, NULL); |
429 | } |
430 | |
431 | if (dir->name) { |
432 | char *ret = dir->name; |
433 | dir->name = NULL; |
434 | return ret; |
435 | } else |
436 | return NULL; |
437 | } |
438 | |
439 | void finish_wildcard_matching(WildcardMatcher *dir) |
440 | { |
441 | FindClose(dir->h); |
442 | if (dir->name) |
443 | sfree(dir->name); |
444 | sfree(dir->srcpath); |
445 | sfree(dir); |
446 | } |
447 | |
448 | int create_directory(char *name) |
449 | { |
450 | return CreateDirectory(name, NULL) != 0; |
451 | } |
452 | |
8c7d710c |
453 | char *dir_file_cat(char *dir, char *file) |
454 | { |
455 | return dupcat(dir, "\\", file, NULL); |
456 | } |
457 | |
799dfcfa |
458 | /* ---------------------------------------------------------------------- |
459 | * Platform-specific network handling. |
460 | */ |
461 | |
462 | /* |
463 | * Be told what socket we're supposed to be using. |
464 | */ |
465 | static SOCKET sftp_ssh_socket; |
39934deb |
466 | static HANDLE netevent = NULL; |
799dfcfa |
467 | char *do_select(SOCKET skt, int startup) |
468 | { |
39934deb |
469 | int events; |
799dfcfa |
470 | if (startup) |
471 | sftp_ssh_socket = skt; |
472 | else |
473 | sftp_ssh_socket = INVALID_SOCKET; |
39934deb |
474 | |
475 | if (p_WSAEventSelect) { |
476 | if (startup) { |
477 | events = (FD_CONNECT | FD_READ | FD_WRITE | |
478 | FD_OOB | FD_CLOSE | FD_ACCEPT); |
479 | netevent = CreateEvent(NULL, FALSE, FALSE, NULL); |
480 | } else { |
481 | events = 0; |
482 | } |
483 | if (p_WSAEventSelect(skt, netevent, events) == SOCKET_ERROR) { |
484 | switch (p_WSAGetLastError()) { |
485 | case WSAENETDOWN: |
486 | return "Network is down"; |
487 | default: |
488 | return "WSAEventSelect(): unknown error"; |
489 | } |
490 | } |
491 | } |
799dfcfa |
492 | return NULL; |
493 | } |
494 | extern int select_result(WPARAM, LPARAM); |
495 | |
39934deb |
496 | int do_eventsel_loop(HANDLE other_event) |
497 | { |
498 | int n; |
499 | long next, ticks; |
500 | HANDLE handles[2]; |
501 | SOCKET *sklist; |
502 | int skcount; |
503 | long now = GETTICKCOUNT(); |
504 | |
505 | if (!netevent) { |
506 | return -1; /* doom */ |
507 | } |
508 | |
509 | handles[0] = netevent; |
510 | handles[1] = other_event; |
511 | |
512 | if (run_timers(now, &next)) { |
513 | ticks = next - GETTICKCOUNT(); |
514 | if (ticks < 0) ticks = 0; /* just in case */ |
515 | } else { |
516 | ticks = INFINITE; |
517 | } |
518 | |
519 | n = MsgWaitForMultipleObjects(other_event ? 2 : 1, handles, FALSE, ticks, |
520 | QS_POSTMESSAGE); |
521 | |
522 | if (n == WAIT_OBJECT_0 + 0) { |
523 | WSANETWORKEVENTS things; |
524 | SOCKET socket; |
525 | extern SOCKET first_socket(int *), next_socket(int *); |
526 | extern int select_result(WPARAM, LPARAM); |
527 | int i, socketstate; |
528 | |
529 | /* |
530 | * We must not call select_result() for any socket |
531 | * until we have finished enumerating within the |
532 | * tree. This is because select_result() may close |
533 | * the socket and modify the tree. |
534 | */ |
535 | /* Count the active sockets. */ |
536 | i = 0; |
537 | for (socket = first_socket(&socketstate); |
538 | socket != INVALID_SOCKET; |
539 | socket = next_socket(&socketstate)) i++; |
540 | |
541 | /* Expand the buffer if necessary. */ |
542 | sklist = snewn(i, SOCKET); |
543 | |
544 | /* Retrieve the sockets into sklist. */ |
545 | skcount = 0; |
546 | for (socket = first_socket(&socketstate); |
547 | socket != INVALID_SOCKET; |
548 | socket = next_socket(&socketstate)) { |
549 | sklist[skcount++] = socket; |
550 | } |
551 | |
552 | /* Now we're done enumerating; go through the list. */ |
553 | for (i = 0; i < skcount; i++) { |
554 | WPARAM wp; |
555 | socket = sklist[i]; |
556 | wp = (WPARAM) socket; |
557 | if (!p_WSAEnumNetworkEvents(socket, NULL, &things)) { |
558 | static const struct { int bit, mask; } eventtypes[] = { |
559 | {FD_CONNECT_BIT, FD_CONNECT}, |
560 | {FD_READ_BIT, FD_READ}, |
561 | {FD_CLOSE_BIT, FD_CLOSE}, |
562 | {FD_OOB_BIT, FD_OOB}, |
563 | {FD_WRITE_BIT, FD_WRITE}, |
564 | {FD_ACCEPT_BIT, FD_ACCEPT}, |
565 | }; |
566 | int e; |
567 | |
568 | noise_ultralight(socket); |
569 | noise_ultralight(things.lNetworkEvents); |
570 | |
571 | for (e = 0; e < lenof(eventtypes); e++) |
572 | if (things.lNetworkEvents & eventtypes[e].mask) { |
573 | LPARAM lp; |
574 | int err = things.iErrorCode[eventtypes[e].bit]; |
575 | lp = WSAMAKESELECTREPLY(eventtypes[e].mask, err); |
576 | select_result(wp, lp); |
577 | } |
578 | } |
579 | } |
580 | |
581 | sfree(sklist); |
582 | } |
583 | |
584 | if (n == WAIT_TIMEOUT) { |
585 | now = next; |
586 | } else { |
587 | now = GETTICKCOUNT(); |
588 | } |
589 | |
590 | if (other_event && n == WAIT_OBJECT_0 + 1) |
591 | return 1; |
592 | |
593 | return 0; |
594 | } |
595 | |
799dfcfa |
596 | /* |
d6cc41e6 |
597 | * Wait for some network data and process it. |
39934deb |
598 | * |
599 | * We have two variants of this function. One uses select() so that |
600 | * it's compatible with WinSock 1. The other uses WSAEventSelect |
601 | * and MsgWaitForMultipleObjects, so that we can consistently use |
602 | * WSAEventSelect throughout; this enables us to also implement |
603 | * ssh_sftp_get_cmdline() using a parallel mechanism. |
d6cc41e6 |
604 | */ |
605 | int ssh_sftp_loop_iteration(void) |
606 | { |
d6cc41e6 |
607 | if (sftp_ssh_socket == INVALID_SOCKET) |
608 | return -1; /* doom */ |
609 | |
39934deb |
610 | if (p_WSAEventSelect == NULL) { |
611 | fd_set readfds; |
612 | int ret; |
613 | long now = GETTICKCOUNT(); |
614 | |
615 | if (socket_writable(sftp_ssh_socket)) |
616 | select_result((WPARAM) sftp_ssh_socket, (LPARAM) FD_WRITE); |
617 | |
618 | do { |
619 | long next, ticks; |
620 | struct timeval tv, *ptv; |
621 | |
622 | if (run_timers(now, &next)) { |
623 | ticks = next - GETTICKCOUNT(); |
624 | if (ticks <= 0) |
625 | ticks = 1; /* just in case */ |
626 | tv.tv_sec = ticks / 1000; |
627 | tv.tv_usec = ticks % 1000 * 1000; |
628 | ptv = &tv; |
629 | } else { |
630 | ptv = NULL; |
631 | } |
632 | |
633 | FD_ZERO(&readfds); |
634 | FD_SET(sftp_ssh_socket, &readfds); |
635 | ret = p_select(1, &readfds, NULL, NULL, ptv); |
636 | |
637 | if (ret < 0) |
638 | return -1; /* doom */ |
639 | else if (ret == 0) |
640 | now = next; |
641 | else |
642 | now = GETTICKCOUNT(); |
643 | |
644 | } while (ret == 0); |
645 | |
646 | select_result((WPARAM) sftp_ssh_socket, (LPARAM) FD_READ); |
647 | |
648 | return 0; |
649 | } else { |
650 | return do_eventsel_loop(NULL); |
651 | } |
652 | } |
653 | |
654 | /* |
655 | * Read a command line from standard input. |
656 | * |
657 | * In the presence of WinSock 2, we can use WSAEventSelect to |
658 | * mediate between the socket and stdin, meaning we can send |
659 | * keepalives and respond to server events even while waiting at |
660 | * the PSFTP command prompt. Without WS2, we fall back to a simple |
661 | * fgets. |
662 | */ |
663 | struct command_read_ctx { |
664 | HANDLE event; |
665 | char *line; |
666 | }; |
667 | |
668 | static DWORD WINAPI command_read_thread(void *param) |
669 | { |
670 | struct command_read_ctx *ctx = (struct command_read_ctx *) param; |
671 | |
672 | ctx->line = fgetline(stdin); |
673 | |
674 | SetEvent(ctx->event); |
d6cc41e6 |
675 | |
d6cc41e6 |
676 | return 0; |
677 | } |
678 | |
39934deb |
679 | char *ssh_sftp_get_cmdline(char *prompt) |
680 | { |
681 | int ret; |
682 | struct command_read_ctx actx, *ctx = &actx; |
683 | DWORD threadid; |
684 | |
685 | fputs(prompt, stdout); |
686 | fflush(stdout); |
687 | |
688 | if (sftp_ssh_socket == INVALID_SOCKET || p_WSAEventSelect == NULL) { |
689 | return fgetline(stdin); /* very simple */ |
690 | } |
691 | |
692 | /* |
693 | * Create a second thread to read from stdin. Process network |
694 | * and timing events until it terminates. |
695 | */ |
696 | ctx->event = CreateEvent(NULL, FALSE, FALSE, NULL); |
697 | ctx->line = NULL; |
698 | |
699 | if (!CreateThread(NULL, 0, command_read_thread, |
700 | ctx, 0, &threadid)) { |
701 | fprintf(stderr, "Unable to create command input thread\n"); |
702 | cleanup_exit(1); |
703 | } |
704 | |
705 | do { |
706 | ret = do_eventsel_loop(ctx->event); |
707 | |
708 | /* Error return can only occur if netevent==NULL, and it ain't. */ |
709 | assert(ret >= 0); |
710 | } while (ret == 0); |
711 | |
712 | return ctx->line; |
713 | } |
714 | |
799dfcfa |
715 | /* ---------------------------------------------------------------------- |
d6cc41e6 |
716 | * Main program. Parse arguments etc. |
717 | */ |
718 | int main(int argc, char *argv[]) |
719 | { |
720 | int ret; |
721 | |
d6cc41e6 |
722 | ret = psftp_main(argc, argv); |
d6cc41e6 |
723 | |
724 | return ret; |
725 | } |