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; |
d6cc41e6 |
112 | } |
799dfcfa |
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 | } |
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127 | |
128 | char *get_ttymode(void *frontend, const char *mode) { return NULL; } |
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129 | |
799dfcfa |
130 | /* ---------------------------------------------------------------------- |
131 | * File access abstraction. |
132 | */ |
133 | |
d6cc41e6 |
134 | /* |
135 | * Set local current directory. Returns NULL on success, or else an |
136 | * error message which must be freed after printing. |
137 | */ |
138 | char *psftp_lcd(char *dir) |
139 | { |
140 | char *ret = NULL; |
141 | |
142 | if (!SetCurrentDirectory(dir)) { |
143 | LPVOID message; |
144 | int i; |
145 | FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | |
146 | FORMAT_MESSAGE_FROM_SYSTEM | |
147 | FORMAT_MESSAGE_IGNORE_INSERTS, |
148 | NULL, GetLastError(), |
149 | MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), |
150 | (LPTSTR)&message, 0, NULL); |
151 | i = strcspn((char *)message, "\n"); |
152 | ret = dupprintf("%.*s", i, (LPCTSTR)message); |
153 | LocalFree(message); |
154 | } |
155 | |
156 | return ret; |
157 | } |
158 | |
159 | /* |
160 | * Get local current directory. Returns a string which must be |
161 | * freed. |
162 | */ |
163 | char *psftp_getcwd(void) |
164 | { |
165 | char *ret = snewn(256, char); |
166 | int len = GetCurrentDirectory(256, ret); |
167 | if (len > 256) |
168 | ret = sresize(ret, len, char); |
169 | GetCurrentDirectory(len, ret); |
170 | return ret; |
171 | } |
172 | |
799dfcfa |
173 | #define TIME_POSIX_TO_WIN(t, ft) (*(LONGLONG*)&(ft) = \ |
174 | ((LONGLONG) (t) + (LONGLONG) 11644473600) * (LONGLONG) 10000000) |
175 | #define TIME_WIN_TO_POSIX(ft, t) ((t) = (unsigned long) \ |
176 | ((*(LONGLONG*)&(ft)) / (LONGLONG) 10000000 - (LONGLONG) 11644473600)) |
177 | |
178 | struct RFile { |
179 | HANDLE h; |
180 | }; |
181 | |
182 | RFile *open_existing_file(char *name, unsigned long *size, |
183 | unsigned long *mtime, unsigned long *atime) |
184 | { |
185 | HANDLE h; |
186 | RFile *ret; |
187 | |
188 | h = CreateFile(name, GENERIC_READ, FILE_SHARE_READ, NULL, |
189 | OPEN_EXISTING, 0, 0); |
190 | if (h == INVALID_HANDLE_VALUE) |
191 | return NULL; |
192 | |
193 | ret = snew(RFile); |
194 | ret->h = h; |
195 | |
196 | if (size) |
197 | *size = GetFileSize(h, NULL); |
198 | |
199 | if (mtime || atime) { |
200 | FILETIME actime, wrtime; |
201 | GetFileTime(h, NULL, &actime, &wrtime); |
202 | if (atime) |
203 | TIME_WIN_TO_POSIX(actime, *atime); |
204 | if (mtime) |
205 | TIME_WIN_TO_POSIX(wrtime, *mtime); |
206 | } |
207 | |
208 | return ret; |
209 | } |
210 | |
211 | int read_from_file(RFile *f, void *buffer, int length) |
212 | { |
213 | int ret, read; |
214 | ret = ReadFile(f->h, buffer, length, &read, NULL); |
215 | if (!ret) |
216 | return -1; /* error */ |
217 | else |
218 | return read; |
219 | } |
220 | |
221 | void close_rfile(RFile *f) |
222 | { |
223 | CloseHandle(f->h); |
224 | sfree(f); |
225 | } |
226 | |
227 | struct WFile { |
228 | HANDLE h; |
229 | }; |
230 | |
231 | WFile *open_new_file(char *name) |
232 | { |
233 | HANDLE h; |
234 | WFile *ret; |
235 | |
236 | h = CreateFile(name, GENERIC_WRITE, 0, NULL, |
237 | CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0); |
238 | if (h == INVALID_HANDLE_VALUE) |
239 | return NULL; |
240 | |
241 | ret = snew(WFile); |
242 | ret->h = h; |
243 | |
244 | return ret; |
245 | } |
246 | |
247 | int write_to_file(WFile *f, void *buffer, int length) |
248 | { |
249 | int ret, written; |
250 | ret = WriteFile(f->h, buffer, length, &written, NULL); |
251 | if (!ret) |
252 | return -1; /* error */ |
253 | else |
254 | return written; |
255 | } |
256 | |
257 | void set_file_times(WFile *f, unsigned long mtime, unsigned long atime) |
258 | { |
259 | FILETIME actime, wrtime; |
260 | TIME_POSIX_TO_WIN(atime, actime); |
261 | TIME_POSIX_TO_WIN(mtime, wrtime); |
262 | SetFileTime(f->h, NULL, &actime, &wrtime); |
263 | } |
264 | |
265 | void close_wfile(WFile *f) |
266 | { |
267 | CloseHandle(f->h); |
268 | sfree(f); |
269 | } |
270 | |
271 | int file_type(char *name) |
272 | { |
273 | DWORD attr; |
274 | attr = GetFileAttributes(name); |
275 | /* We know of no `weird' files under Windows. */ |
276 | if (attr == (DWORD)-1) |
277 | return FILE_TYPE_NONEXISTENT; |
278 | else if (attr & FILE_ATTRIBUTE_DIRECTORY) |
279 | return FILE_TYPE_DIRECTORY; |
280 | else |
281 | return FILE_TYPE_FILE; |
282 | } |
283 | |
284 | struct DirHandle { |
285 | HANDLE h; |
286 | char *name; |
287 | }; |
288 | |
289 | DirHandle *open_directory(char *name) |
290 | { |
291 | HANDLE h; |
292 | WIN32_FIND_DATA fdat; |
293 | char *findfile; |
294 | DirHandle *ret; |
295 | |
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296 | /* Enumerate files in dir `foo'. */ |
799dfcfa |
297 | findfile = dupcat(name, "/*", NULL); |
298 | h = FindFirstFile(findfile, &fdat); |
299 | if (h == INVALID_HANDLE_VALUE) |
300 | return NULL; |
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301 | sfree(findfile); |
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302 | |
303 | ret = snew(DirHandle); |
304 | ret->h = h; |
305 | ret->name = dupstr(fdat.cFileName); |
306 | return ret; |
307 | } |
308 | |
309 | char *read_filename(DirHandle *dir) |
310 | { |
b0e15bb5 |
311 | do { |
312 | |
313 | if (!dir->name) { |
314 | WIN32_FIND_DATA fdat; |
315 | int ok = FindNextFile(dir->h, &fdat); |
316 | if (!ok) |
317 | return NULL; |
318 | else |
319 | dir->name = dupstr(fdat.cFileName); |
320 | } |
321 | |
322 | assert(dir->name); |
323 | if (dir->name[0] == '.' && |
324 | (dir->name[1] == '\0' || |
325 | (dir->name[1] == '.' && dir->name[2] == '\0'))) { |
326 | sfree(dir->name); |
8c7d710c |
327 | dir->name = NULL; |
b0e15bb5 |
328 | } |
329 | |
330 | } while (!dir->name); |
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331 | |
332 | if (dir->name) { |
333 | char *ret = dir->name; |
334 | dir->name = NULL; |
335 | return ret; |
336 | } else |
337 | return NULL; |
338 | } |
339 | |
340 | void close_directory(DirHandle *dir) |
341 | { |
342 | FindClose(dir->h); |
343 | if (dir->name) |
344 | sfree(dir->name); |
345 | sfree(dir); |
346 | } |
347 | |
348 | int test_wildcard(char *name, int cmdline) |
349 | { |
350 | HANDLE fh; |
351 | WIN32_FIND_DATA fdat; |
352 | |
353 | /* First see if the exact name exists. */ |
354 | if (GetFileAttributes(name) != (DWORD)-1) |
355 | return WCTYPE_FILENAME; |
356 | |
357 | /* Otherwise see if a wildcard match finds anything. */ |
358 | fh = FindFirstFile(name, &fdat); |
359 | if (fh == INVALID_HANDLE_VALUE) |
360 | return WCTYPE_NONEXISTENT; |
361 | |
362 | FindClose(fh); |
363 | return WCTYPE_WILDCARD; |
364 | } |
365 | |
366 | struct WildcardMatcher { |
367 | HANDLE h; |
368 | char *name; |
369 | char *srcpath; |
370 | }; |
371 | |
372 | /* |
373 | * Return a pointer to the portion of str that comes after the last |
374 | * slash (or backslash or colon, if `local' is TRUE). |
375 | */ |
376 | static char *stripslashes(char *str, int local) |
377 | { |
378 | char *p; |
379 | |
380 | if (local) { |
381 | p = strchr(str, ':'); |
382 | if (p) str = p+1; |
383 | } |
384 | |
385 | p = strrchr(str, '/'); |
386 | if (p) str = p+1; |
387 | |
388 | if (local) { |
389 | p = strrchr(str, '\\'); |
390 | if (p) str = p+1; |
391 | } |
392 | |
393 | return str; |
394 | } |
395 | |
396 | WildcardMatcher *begin_wildcard_matching(char *name) |
397 | { |
398 | HANDLE h; |
399 | WIN32_FIND_DATA fdat; |
400 | WildcardMatcher *ret; |
401 | char *last; |
402 | |
403 | h = FindFirstFile(name, &fdat); |
404 | if (h == INVALID_HANDLE_VALUE) |
405 | return NULL; |
406 | |
407 | ret = snew(WildcardMatcher); |
408 | ret->h = h; |
409 | ret->srcpath = dupstr(name); |
410 | last = stripslashes(ret->srcpath, 1); |
411 | *last = '\0'; |
412 | if (fdat.cFileName[0] == '.' && |
413 | (fdat.cFileName[1] == '\0' || |
414 | (fdat.cFileName[1] == '.' && fdat.cFileName[2] == '\0'))) |
415 | ret->name = NULL; |
416 | else |
417 | ret->name = dupcat(ret->srcpath, fdat.cFileName, NULL); |
418 | |
419 | return ret; |
420 | } |
421 | |
422 | char *wildcard_get_filename(WildcardMatcher *dir) |
423 | { |
424 | while (!dir->name) { |
425 | WIN32_FIND_DATA fdat; |
426 | int ok = FindNextFile(dir->h, &fdat); |
427 | |
428 | if (!ok) |
429 | return NULL; |
430 | |
431 | if (fdat.cFileName[0] == '.' && |
432 | (fdat.cFileName[1] == '\0' || |
433 | (fdat.cFileName[1] == '.' && fdat.cFileName[2] == '\0'))) |
434 | dir->name = NULL; |
435 | else |
436 | dir->name = dupcat(dir->srcpath, fdat.cFileName, NULL); |
437 | } |
438 | |
439 | if (dir->name) { |
440 | char *ret = dir->name; |
441 | dir->name = NULL; |
442 | return ret; |
443 | } else |
444 | return NULL; |
445 | } |
446 | |
447 | void finish_wildcard_matching(WildcardMatcher *dir) |
448 | { |
449 | FindClose(dir->h); |
450 | if (dir->name) |
451 | sfree(dir->name); |
452 | sfree(dir->srcpath); |
453 | sfree(dir); |
454 | } |
455 | |
e9d14678 |
456 | int vet_filename(char *name) |
457 | { |
458 | if (strchr(name, '/') || strchr(name, '\\') || strchr(name, ':')) |
459 | return FALSE; |
460 | |
461 | if (!name[strspn(name, ".")]) /* entirely composed of dots */ |
462 | return FALSE; |
463 | |
464 | return TRUE; |
465 | } |
466 | |
799dfcfa |
467 | int create_directory(char *name) |
468 | { |
469 | return CreateDirectory(name, NULL) != 0; |
470 | } |
471 | |
8c7d710c |
472 | char *dir_file_cat(char *dir, char *file) |
473 | { |
474 | return dupcat(dir, "\\", file, NULL); |
475 | } |
476 | |
799dfcfa |
477 | /* ---------------------------------------------------------------------- |
478 | * Platform-specific network handling. |
479 | */ |
480 | |
481 | /* |
482 | * Be told what socket we're supposed to be using. |
483 | */ |
65857773 |
484 | static SOCKET sftp_ssh_socket = INVALID_SOCKET; |
39934deb |
485 | static HANDLE netevent = NULL; |
799dfcfa |
486 | char *do_select(SOCKET skt, int startup) |
487 | { |
39934deb |
488 | int events; |
799dfcfa |
489 | if (startup) |
490 | sftp_ssh_socket = skt; |
491 | else |
492 | sftp_ssh_socket = INVALID_SOCKET; |
39934deb |
493 | |
494 | if (p_WSAEventSelect) { |
495 | if (startup) { |
496 | events = (FD_CONNECT | FD_READ | FD_WRITE | |
497 | FD_OOB | FD_CLOSE | FD_ACCEPT); |
498 | netevent = CreateEvent(NULL, FALSE, FALSE, NULL); |
499 | } else { |
500 | events = 0; |
501 | } |
502 | if (p_WSAEventSelect(skt, netevent, events) == SOCKET_ERROR) { |
503 | switch (p_WSAGetLastError()) { |
504 | case WSAENETDOWN: |
505 | return "Network is down"; |
506 | default: |
507 | return "WSAEventSelect(): unknown error"; |
508 | } |
509 | } |
510 | } |
799dfcfa |
511 | return NULL; |
512 | } |
513 | extern int select_result(WPARAM, LPARAM); |
514 | |
39934deb |
515 | int do_eventsel_loop(HANDLE other_event) |
516 | { |
517 | int n; |
518 | long next, ticks; |
519 | HANDLE handles[2]; |
520 | SOCKET *sklist; |
521 | int skcount; |
522 | long now = GETTICKCOUNT(); |
523 | |
524 | if (!netevent) { |
525 | return -1; /* doom */ |
526 | } |
527 | |
528 | handles[0] = netevent; |
529 | handles[1] = other_event; |
530 | |
531 | if (run_timers(now, &next)) { |
532 | ticks = next - GETTICKCOUNT(); |
533 | if (ticks < 0) ticks = 0; /* just in case */ |
534 | } else { |
535 | ticks = INFINITE; |
536 | } |
537 | |
538 | n = MsgWaitForMultipleObjects(other_event ? 2 : 1, handles, FALSE, ticks, |
539 | QS_POSTMESSAGE); |
540 | |
541 | if (n == WAIT_OBJECT_0 + 0) { |
542 | WSANETWORKEVENTS things; |
543 | SOCKET socket; |
544 | extern SOCKET first_socket(int *), next_socket(int *); |
545 | extern int select_result(WPARAM, LPARAM); |
546 | int i, socketstate; |
547 | |
548 | /* |
549 | * We must not call select_result() for any socket |
550 | * until we have finished enumerating within the |
551 | * tree. This is because select_result() may close |
552 | * the socket and modify the tree. |
553 | */ |
554 | /* Count the active sockets. */ |
555 | i = 0; |
556 | for (socket = first_socket(&socketstate); |
557 | socket != INVALID_SOCKET; |
558 | socket = next_socket(&socketstate)) i++; |
559 | |
560 | /* Expand the buffer if necessary. */ |
561 | sklist = snewn(i, SOCKET); |
562 | |
563 | /* Retrieve the sockets into sklist. */ |
564 | skcount = 0; |
565 | for (socket = first_socket(&socketstate); |
566 | socket != INVALID_SOCKET; |
567 | socket = next_socket(&socketstate)) { |
568 | sklist[skcount++] = socket; |
569 | } |
570 | |
571 | /* Now we're done enumerating; go through the list. */ |
572 | for (i = 0; i < skcount; i++) { |
573 | WPARAM wp; |
574 | socket = sklist[i]; |
575 | wp = (WPARAM) socket; |
576 | if (!p_WSAEnumNetworkEvents(socket, NULL, &things)) { |
577 | static const struct { int bit, mask; } eventtypes[] = { |
578 | {FD_CONNECT_BIT, FD_CONNECT}, |
579 | {FD_READ_BIT, FD_READ}, |
580 | {FD_CLOSE_BIT, FD_CLOSE}, |
581 | {FD_OOB_BIT, FD_OOB}, |
582 | {FD_WRITE_BIT, FD_WRITE}, |
583 | {FD_ACCEPT_BIT, FD_ACCEPT}, |
584 | }; |
585 | int e; |
586 | |
587 | noise_ultralight(socket); |
588 | noise_ultralight(things.lNetworkEvents); |
589 | |
590 | for (e = 0; e < lenof(eventtypes); e++) |
591 | if (things.lNetworkEvents & eventtypes[e].mask) { |
592 | LPARAM lp; |
593 | int err = things.iErrorCode[eventtypes[e].bit]; |
594 | lp = WSAMAKESELECTREPLY(eventtypes[e].mask, err); |
595 | select_result(wp, lp); |
596 | } |
597 | } |
598 | } |
599 | |
600 | sfree(sklist); |
601 | } |
602 | |
603 | if (n == WAIT_TIMEOUT) { |
604 | now = next; |
605 | } else { |
606 | now = GETTICKCOUNT(); |
607 | } |
608 | |
609 | if (other_event && n == WAIT_OBJECT_0 + 1) |
610 | return 1; |
611 | |
612 | return 0; |
613 | } |
614 | |
799dfcfa |
615 | /* |
d6cc41e6 |
616 | * Wait for some network data and process it. |
39934deb |
617 | * |
618 | * We have two variants of this function. One uses select() so that |
619 | * it's compatible with WinSock 1. The other uses WSAEventSelect |
620 | * and MsgWaitForMultipleObjects, so that we can consistently use |
621 | * WSAEventSelect throughout; this enables us to also implement |
622 | * ssh_sftp_get_cmdline() using a parallel mechanism. |
d6cc41e6 |
623 | */ |
624 | int ssh_sftp_loop_iteration(void) |
625 | { |
d6cc41e6 |
626 | if (sftp_ssh_socket == INVALID_SOCKET) |
627 | return -1; /* doom */ |
628 | |
39934deb |
629 | if (p_WSAEventSelect == NULL) { |
630 | fd_set readfds; |
631 | int ret; |
632 | long now = GETTICKCOUNT(); |
633 | |
634 | if (socket_writable(sftp_ssh_socket)) |
635 | select_result((WPARAM) sftp_ssh_socket, (LPARAM) FD_WRITE); |
636 | |
637 | do { |
638 | long next, ticks; |
639 | struct timeval tv, *ptv; |
640 | |
641 | if (run_timers(now, &next)) { |
642 | ticks = next - GETTICKCOUNT(); |
643 | if (ticks <= 0) |
644 | ticks = 1; /* just in case */ |
645 | tv.tv_sec = ticks / 1000; |
646 | tv.tv_usec = ticks % 1000 * 1000; |
647 | ptv = &tv; |
648 | } else { |
649 | ptv = NULL; |
650 | } |
651 | |
652 | FD_ZERO(&readfds); |
653 | FD_SET(sftp_ssh_socket, &readfds); |
654 | ret = p_select(1, &readfds, NULL, NULL, ptv); |
655 | |
656 | if (ret < 0) |
657 | return -1; /* doom */ |
658 | else if (ret == 0) |
659 | now = next; |
660 | else |
661 | now = GETTICKCOUNT(); |
662 | |
663 | } while (ret == 0); |
664 | |
665 | select_result((WPARAM) sftp_ssh_socket, (LPARAM) FD_READ); |
666 | |
667 | return 0; |
668 | } else { |
669 | return do_eventsel_loop(NULL); |
670 | } |
671 | } |
672 | |
673 | /* |
674 | * Read a command line from standard input. |
675 | * |
676 | * In the presence of WinSock 2, we can use WSAEventSelect to |
677 | * mediate between the socket and stdin, meaning we can send |
678 | * keepalives and respond to server events even while waiting at |
679 | * the PSFTP command prompt. Without WS2, we fall back to a simple |
680 | * fgets. |
681 | */ |
682 | struct command_read_ctx { |
683 | HANDLE event; |
684 | char *line; |
685 | }; |
686 | |
687 | static DWORD WINAPI command_read_thread(void *param) |
688 | { |
689 | struct command_read_ctx *ctx = (struct command_read_ctx *) param; |
690 | |
691 | ctx->line = fgetline(stdin); |
692 | |
693 | SetEvent(ctx->event); |
d6cc41e6 |
694 | |
d6cc41e6 |
695 | return 0; |
696 | } |
697 | |
65857773 |
698 | char *ssh_sftp_get_cmdline(char *prompt, int no_fds_ok) |
39934deb |
699 | { |
700 | int ret; |
701 | struct command_read_ctx actx, *ctx = &actx; |
702 | DWORD threadid; |
703 | |
704 | fputs(prompt, stdout); |
705 | fflush(stdout); |
706 | |
65857773 |
707 | if ((sftp_ssh_socket == INVALID_SOCKET && no_fds_ok) || |
708 | p_WSAEventSelect == NULL) { |
39934deb |
709 | return fgetline(stdin); /* very simple */ |
710 | } |
711 | |
712 | /* |
713 | * Create a second thread to read from stdin. Process network |
714 | * and timing events until it terminates. |
715 | */ |
716 | ctx->event = CreateEvent(NULL, FALSE, FALSE, NULL); |
717 | ctx->line = NULL; |
718 | |
719 | if (!CreateThread(NULL, 0, command_read_thread, |
720 | ctx, 0, &threadid)) { |
721 | fprintf(stderr, "Unable to create command input thread\n"); |
722 | cleanup_exit(1); |
723 | } |
724 | |
725 | do { |
726 | ret = do_eventsel_loop(ctx->event); |
727 | |
728 | /* Error return can only occur if netevent==NULL, and it ain't. */ |
729 | assert(ret >= 0); |
730 | } while (ret == 0); |
731 | |
732 | return ctx->line; |
733 | } |
734 | |
799dfcfa |
735 | /* ---------------------------------------------------------------------- |
d6cc41e6 |
736 | * Main program. Parse arguments etc. |
737 | */ |
738 | int main(int argc, char *argv[]) |
739 | { |
740 | int ret; |
741 | |
d6cc41e6 |
742 | ret = psftp_main(argc, argv); |
d6cc41e6 |
743 | |
744 | return ret; |
745 | } |