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1c1af145 | 1 | /* |
2 | * scp.c - Scp (Secure Copy) client for PuTTY. | |
3 | * Joris van Rantwijk, Simon Tatham | |
4 | * | |
5 | * This is mainly based on ssh-1.2.26/scp.c by Timo Rinne & Tatu Ylonen. | |
6 | * They, in turn, used stuff from BSD rcp. | |
7 | * | |
8 | * (SGT, 2001-09-10: Joris van Rantwijk assures me that although | |
9 | * this file as originally submitted was inspired by, and | |
10 | * _structurally_ based on, ssh-1.2.26's scp.c, there wasn't any | |
11 | * actual code duplicated, so the above comment shouldn't give rise | |
12 | * to licensing issues.) | |
13 | */ | |
14 | ||
15 | #include <stdlib.h> | |
16 | #include <stdio.h> | |
17 | #include <string.h> | |
18 | #include <limits.h> | |
19 | #include <time.h> | |
20 | #include <assert.h> | |
21 | ||
22 | #define PUTTY_DO_GLOBALS | |
23 | #include "putty.h" | |
24 | #include "psftp.h" | |
25 | #include "ssh.h" | |
26 | #include "sftp.h" | |
27 | #include "storage.h" | |
28 | #include "int64.h" | |
29 | ||
30 | static int list = 0; | |
31 | static int verbose = 0; | |
32 | static int recursive = 0; | |
33 | static int preserve = 0; | |
34 | static int targetshouldbedirectory = 0; | |
35 | static int statistics = 1; | |
36 | static int prev_stats_len = 0; | |
37 | static int scp_unsafe_mode = 0; | |
38 | static int errs = 0; | |
39 | static int try_scp = 1; | |
40 | static int try_sftp = 1; | |
41 | static int main_cmd_is_sftp = 0; | |
42 | static int fallback_cmd_is_sftp = 0; | |
43 | static int using_sftp = 0; | |
44 | ||
45 | static Backend *back; | |
46 | static void *backhandle; | |
47 | static Config cfg; | |
48 | ||
49 | static void source(char *src); | |
50 | static void rsource(char *src); | |
51 | static void sink(char *targ, char *src); | |
52 | ||
53 | const char *const appname = "PSCP"; | |
54 | ||
55 | /* | |
56 | * The maximum amount of queued data we accept before we stop and | |
57 | * wait for the server to process some. | |
58 | */ | |
59 | #define MAX_SCP_BUFSIZE 16384 | |
60 | ||
61 | void ldisc_send(void *handle, char *buf, int len, int interactive) | |
62 | { | |
63 | /* | |
64 | * This is only here because of the calls to ldisc_send(NULL, | |
65 | * 0) in ssh.c. Nothing in PSCP actually needs to use the ldisc | |
66 | * as an ldisc. So if we get called with any real data, I want | |
67 | * to know about it. | |
68 | */ | |
69 | assert(len == 0); | |
70 | } | |
71 | ||
72 | static void tell_char(FILE * stream, char c) | |
73 | { | |
74 | fputc(c, stream); | |
75 | } | |
76 | ||
77 | static void tell_str(FILE * stream, char *str) | |
78 | { | |
79 | unsigned int i; | |
80 | ||
81 | for (i = 0; i < strlen(str); ++i) | |
82 | tell_char(stream, str[i]); | |
83 | } | |
84 | ||
85 | static void tell_user(FILE * stream, char *fmt, ...) | |
86 | { | |
87 | char *str, *str2; | |
88 | va_list ap; | |
89 | va_start(ap, fmt); | |
90 | str = dupvprintf(fmt, ap); | |
91 | va_end(ap); | |
92 | str2 = dupcat(str, "\n", NULL); | |
93 | sfree(str); | |
94 | tell_str(stream, str2); | |
95 | sfree(str2); | |
96 | } | |
97 | ||
98 | /* | |
99 | * Print an error message and perform a fatal exit. | |
100 | */ | |
101 | void fatalbox(char *fmt, ...) | |
102 | { | |
103 | char *str, *str2; | |
104 | va_list ap; | |
105 | va_start(ap, fmt); | |
106 | str = dupvprintf(fmt, ap); | |
107 | str2 = dupcat("Fatal: ", str, "\n", NULL); | |
108 | sfree(str); | |
109 | va_end(ap); | |
110 | tell_str(stderr, str2); | |
111 | sfree(str2); | |
112 | errs++; | |
113 | ||
114 | cleanup_exit(1); | |
115 | } | |
116 | void modalfatalbox(char *fmt, ...) | |
117 | { | |
118 | char *str, *str2; | |
119 | va_list ap; | |
120 | va_start(ap, fmt); | |
121 | str = dupvprintf(fmt, ap); | |
122 | str2 = dupcat("Fatal: ", str, "\n", NULL); | |
123 | sfree(str); | |
124 | va_end(ap); | |
125 | tell_str(stderr, str2); | |
126 | sfree(str2); | |
127 | errs++; | |
128 | ||
129 | cleanup_exit(1); | |
130 | } | |
131 | void connection_fatal(void *frontend, char *fmt, ...) | |
132 | { | |
133 | char *str, *str2; | |
134 | va_list ap; | |
135 | va_start(ap, fmt); | |
136 | str = dupvprintf(fmt, ap); | |
137 | str2 = dupcat("Fatal: ", str, "\n", NULL); | |
138 | sfree(str); | |
139 | va_end(ap); | |
140 | tell_str(stderr, str2); | |
141 | sfree(str2); | |
142 | errs++; | |
143 | ||
144 | cleanup_exit(1); | |
145 | } | |
146 | ||
147 | /* | |
148 | * In pscp, all agent requests should be synchronous, so this is a | |
149 | * never-called stub. | |
150 | */ | |
151 | void agent_schedule_callback(void (*callback)(void *, void *, int), | |
152 | void *callback_ctx, void *data, int len) | |
153 | { | |
154 | assert(!"We shouldn't be here"); | |
155 | } | |
156 | ||
157 | /* | |
158 | * Receive a block of data from the SSH link. Block until all data | |
159 | * is available. | |
160 | * | |
161 | * To do this, we repeatedly call the SSH protocol module, with our | |
162 | * own trap in from_backend() to catch the data that comes back. We | |
163 | * do this until we have enough data. | |
164 | */ | |
165 | ||
166 | static unsigned char *outptr; /* where to put the data */ | |
167 | static unsigned outlen; /* how much data required */ | |
168 | static unsigned char *pending = NULL; /* any spare data */ | |
169 | static unsigned pendlen = 0, pendsize = 0; /* length and phys. size of buffer */ | |
170 | int from_backend(void *frontend, int is_stderr, const char *data, int datalen) | |
171 | { | |
172 | unsigned char *p = (unsigned char *) data; | |
173 | unsigned len = (unsigned) datalen; | |
174 | ||
175 | /* | |
176 | * stderr data is just spouted to local stderr and otherwise | |
177 | * ignored. | |
178 | */ | |
179 | if (is_stderr) { | |
180 | if (len > 0) | |
181 | if (fwrite(data, 1, len, stderr) < len) | |
182 | /* oh well */; | |
183 | return 0; | |
184 | } | |
185 | ||
186 | if ((outlen > 0) && (len > 0)) { | |
187 | unsigned used = outlen; | |
188 | if (used > len) | |
189 | used = len; | |
190 | memcpy(outptr, p, used); | |
191 | outptr += used; | |
192 | outlen -= used; | |
193 | p += used; | |
194 | len -= used; | |
195 | } | |
196 | ||
197 | if (len > 0) { | |
198 | if (pendsize < pendlen + len) { | |
199 | pendsize = pendlen + len + 4096; | |
200 | pending = sresize(pending, pendsize, unsigned char); | |
201 | } | |
202 | memcpy(pending + pendlen, p, len); | |
203 | pendlen += len; | |
204 | } | |
205 | ||
206 | return 0; | |
207 | } | |
208 | int from_backend_untrusted(void *frontend_handle, const char *data, int len) | |
209 | { | |
210 | /* | |
211 | * No "untrusted" output should get here (the way the code is | |
212 | * currently, it's all diverted by FLAG_STDERR). | |
213 | */ | |
214 | assert(!"Unexpected call to from_backend_untrusted()"); | |
215 | return 0; /* not reached */ | |
216 | } | |
217 | static int ssh_scp_recv(unsigned char *buf, int len) | |
218 | { | |
219 | outptr = buf; | |
220 | outlen = len; | |
221 | ||
222 | /* | |
223 | * See if the pending-input block contains some of what we | |
224 | * need. | |
225 | */ | |
226 | if (pendlen > 0) { | |
227 | unsigned pendused = pendlen; | |
228 | if (pendused > outlen) | |
229 | pendused = outlen; | |
230 | memcpy(outptr, pending, pendused); | |
231 | memmove(pending, pending + pendused, pendlen - pendused); | |
232 | outptr += pendused; | |
233 | outlen -= pendused; | |
234 | pendlen -= pendused; | |
235 | if (pendlen == 0) { | |
236 | pendsize = 0; | |
237 | sfree(pending); | |
238 | pending = NULL; | |
239 | } | |
240 | if (outlen == 0) | |
241 | return len; | |
242 | } | |
243 | ||
244 | while (outlen > 0) { | |
245 | if (back->exitcode(backhandle) >= 0 || ssh_sftp_loop_iteration() < 0) | |
246 | return 0; /* doom */ | |
247 | } | |
248 | ||
249 | return len; | |
250 | } | |
251 | ||
252 | /* | |
253 | * Loop through the ssh connection and authentication process. | |
254 | */ | |
255 | static void ssh_scp_init(void) | |
256 | { | |
257 | while (!back->sendok(backhandle)) { | |
258 | if (back->exitcode(backhandle) >= 0) { | |
259 | errs++; | |
260 | return; | |
261 | } | |
262 | if (ssh_sftp_loop_iteration() < 0) { | |
263 | errs++; | |
264 | return; /* doom */ | |
265 | } | |
266 | } | |
267 | ||
268 | /* Work out which backend we ended up using. */ | |
269 | if (!ssh_fallback_cmd(backhandle)) | |
270 | using_sftp = main_cmd_is_sftp; | |
271 | else | |
272 | using_sftp = fallback_cmd_is_sftp; | |
273 | ||
274 | if (verbose) { | |
275 | if (using_sftp) | |
276 | tell_user(stderr, "Using SFTP"); | |
277 | else | |
278 | tell_user(stderr, "Using SCP1"); | |
279 | } | |
280 | } | |
281 | ||
282 | /* | |
283 | * Print an error message and exit after closing the SSH link. | |
284 | */ | |
285 | static void bump(char *fmt, ...) | |
286 | { | |
287 | char *str, *str2; | |
288 | va_list ap; | |
289 | va_start(ap, fmt); | |
290 | str = dupvprintf(fmt, ap); | |
291 | va_end(ap); | |
292 | str2 = dupcat(str, "\n", NULL); | |
293 | sfree(str); | |
294 | tell_str(stderr, str2); | |
295 | sfree(str2); | |
296 | errs++; | |
297 | ||
298 | if (back != NULL && back->connected(backhandle)) { | |
299 | char ch; | |
300 | back->special(backhandle, TS_EOF); | |
301 | ssh_scp_recv((unsigned char *) &ch, 1); | |
302 | } | |
303 | ||
304 | cleanup_exit(1); | |
305 | } | |
306 | ||
307 | /* | |
308 | * Open an SSH connection to user@host and execute cmd. | |
309 | */ | |
310 | static void do_cmd(char *host, char *user, char *cmd) | |
311 | { | |
312 | const char *err; | |
313 | char *realhost; | |
314 | void *logctx; | |
315 | ||
316 | if (host == NULL || host[0] == '\0') | |
317 | bump("Empty host name"); | |
318 | ||
319 | /* | |
320 | * Remove fiddly bits of address: remove a colon suffix, and | |
321 | * the square brackets around an IPv6 literal address. | |
322 | */ | |
323 | if (host[0] == '[') { | |
324 | host++; | |
325 | host[strcspn(host, "]")] = '\0'; | |
326 | } else { | |
327 | host[strcspn(host, ":")] = '\0'; | |
328 | } | |
329 | ||
330 | /* | |
331 | * If we haven't loaded session details already (e.g., from -load), | |
332 | * try looking for a session called "host". | |
333 | */ | |
334 | if (!loaded_session) { | |
335 | /* Try to load settings for `host' into a temporary config */ | |
336 | Config cfg2; | |
337 | cfg2.host[0] = '\0'; | |
338 | do_defaults(host, &cfg2); | |
339 | if (cfg2.host[0] != '\0') { | |
340 | /* Settings present and include hostname */ | |
341 | /* Re-load data into the real config. */ | |
342 | do_defaults(host, &cfg); | |
343 | } else { | |
344 | /* Session doesn't exist or mention a hostname. */ | |
345 | /* Use `host' as a bare hostname. */ | |
346 | strncpy(cfg.host, host, sizeof(cfg.host) - 1); | |
347 | cfg.host[sizeof(cfg.host) - 1] = '\0'; | |
348 | } | |
349 | } else { | |
350 | /* Patch in hostname `host' to session details. */ | |
351 | strncpy(cfg.host, host, sizeof(cfg.host) - 1); | |
352 | cfg.host[sizeof(cfg.host) - 1] = '\0'; | |
353 | } | |
354 | ||
355 | /* | |
356 | * Force use of SSH. (If they got the protocol wrong we assume the | |
357 | * port is useless too.) | |
358 | */ | |
359 | if (cfg.protocol != PROT_SSH) { | |
360 | cfg.protocol = PROT_SSH; | |
361 | cfg.port = 22; | |
362 | } | |
363 | ||
364 | /* | |
365 | * Enact command-line overrides. | |
366 | */ | |
367 | cmdline_run_saved(&cfg); | |
368 | ||
369 | /* | |
370 | * Trim leading whitespace off the hostname if it's there. | |
371 | */ | |
372 | { | |
373 | int space = strspn(cfg.host, " \t"); | |
374 | memmove(cfg.host, cfg.host+space, 1+strlen(cfg.host)-space); | |
375 | } | |
376 | ||
377 | /* See if host is of the form user@host */ | |
378 | if (cfg.host[0] != '\0') { | |
379 | char *atsign = strrchr(cfg.host, '@'); | |
380 | /* Make sure we're not overflowing the user field */ | |
381 | if (atsign) { | |
382 | if (atsign - cfg.host < sizeof cfg.username) { | |
383 | strncpy(cfg.username, cfg.host, atsign - cfg.host); | |
384 | cfg.username[atsign - cfg.host] = '\0'; | |
385 | } | |
386 | memmove(cfg.host, atsign + 1, 1 + strlen(atsign + 1)); | |
387 | } | |
388 | } | |
389 | ||
390 | /* | |
391 | * Remove any remaining whitespace from the hostname. | |
392 | */ | |
393 | { | |
394 | int p1 = 0, p2 = 0; | |
395 | while (cfg.host[p2] != '\0') { | |
396 | if (cfg.host[p2] != ' ' && cfg.host[p2] != '\t') { | |
397 | cfg.host[p1] = cfg.host[p2]; | |
398 | p1++; | |
399 | } | |
400 | p2++; | |
401 | } | |
402 | cfg.host[p1] = '\0'; | |
403 | } | |
404 | ||
405 | /* Set username */ | |
406 | if (user != NULL && user[0] != '\0') { | |
407 | strncpy(cfg.username, user, sizeof(cfg.username) - 1); | |
408 | cfg.username[sizeof(cfg.username) - 1] = '\0'; | |
409 | } else if (cfg.username[0] == '\0') { | |
410 | user = get_username(); | |
411 | if (!user) | |
412 | bump("Empty user name"); | |
413 | else { | |
414 | if (verbose) | |
415 | tell_user(stderr, "Guessing user name: %s", user); | |
416 | strncpy(cfg.username, user, sizeof(cfg.username) - 1); | |
417 | cfg.username[sizeof(cfg.username) - 1] = '\0'; | |
418 | sfree(user); | |
419 | } | |
420 | } | |
421 | ||
422 | /* | |
423 | * Disable scary things which shouldn't be enabled for simple | |
424 | * things like SCP and SFTP: agent forwarding, port forwarding, | |
425 | * X forwarding. | |
426 | */ | |
427 | cfg.x11_forward = 0; | |
428 | cfg.agentfwd = 0; | |
429 | cfg.portfwd[0] = cfg.portfwd[1] = '\0'; | |
430 | cfg.ssh_simple = TRUE; | |
431 | ||
432 | /* | |
433 | * Set up main and possibly fallback command depending on | |
434 | * options specified by user. | |
435 | * Attempt to start the SFTP subsystem as a first choice, | |
436 | * falling back to the provided scp command if that fails. | |
437 | */ | |
438 | cfg.remote_cmd_ptr2 = NULL; | |
439 | if (try_sftp) { | |
440 | /* First choice is SFTP subsystem. */ | |
441 | main_cmd_is_sftp = 1; | |
442 | strcpy(cfg.remote_cmd, "sftp"); | |
443 | cfg.ssh_subsys = TRUE; | |
444 | if (try_scp) { | |
445 | /* Fallback is to use the provided scp command. */ | |
446 | fallback_cmd_is_sftp = 0; | |
447 | cfg.remote_cmd_ptr2 = cmd; | |
448 | cfg.ssh_subsys2 = FALSE; | |
449 | } else { | |
450 | /* Since we're not going to try SCP, we may as well try | |
451 | * harder to find an SFTP server, since in the current | |
452 | * implementation we have a spare slot. */ | |
453 | fallback_cmd_is_sftp = 1; | |
454 | /* see psftp.c for full explanation of this kludge */ | |
455 | cfg.remote_cmd_ptr2 = | |
456 | "test -x /usr/lib/sftp-server && exec /usr/lib/sftp-server\n" | |
457 | "test -x /usr/local/lib/sftp-server && exec /usr/local/lib/sftp-server\n" | |
458 | "exec sftp-server"; | |
459 | cfg.ssh_subsys2 = FALSE; | |
460 | } | |
461 | } else { | |
462 | /* Don't try SFTP at all; just try the scp command. */ | |
463 | main_cmd_is_sftp = 0; | |
464 | cfg.remote_cmd_ptr = cmd; | |
465 | cfg.ssh_subsys = FALSE; | |
466 | } | |
467 | cfg.nopty = TRUE; | |
468 | ||
469 | back = &ssh_backend; | |
470 | ||
471 | err = back->init(NULL, &backhandle, &cfg, cfg.host, cfg.port, &realhost, | |
472 | 0, cfg.tcp_keepalives); | |
473 | if (err != NULL) | |
474 | bump("ssh_init: %s", err); | |
475 | logctx = log_init(NULL, &cfg); | |
476 | back->provide_logctx(backhandle, logctx); | |
477 | console_provide_logctx(logctx); | |
478 | ssh_scp_init(); | |
479 | if (verbose && realhost != NULL && errs == 0) | |
480 | tell_user(stderr, "Connected to %s\n", realhost); | |
481 | sfree(realhost); | |
482 | } | |
483 | ||
484 | /* | |
485 | * Update statistic information about current file. | |
486 | */ | |
487 | static void print_stats(char *name, uint64 size, uint64 done, | |
488 | time_t start, time_t now) | |
489 | { | |
490 | float ratebs; | |
491 | unsigned long eta; | |
492 | char *etastr; | |
493 | int pct; | |
494 | int len; | |
495 | int elap; | |
496 | double donedbl; | |
497 | double sizedbl; | |
498 | ||
499 | elap = (unsigned long) difftime(now, start); | |
500 | ||
501 | if (now > start) | |
502 | ratebs = (float) (uint64_to_double(done) / elap); | |
503 | else | |
504 | ratebs = (float) uint64_to_double(done); | |
505 | ||
506 | if (ratebs < 1.0) | |
507 | eta = (unsigned long) (uint64_to_double(uint64_subtract(size, done))); | |
508 | else { | |
509 | eta = (unsigned long) | |
510 | ((uint64_to_double(uint64_subtract(size, done)) / ratebs)); | |
511 | } | |
512 | ||
513 | etastr = dupprintf("%02ld:%02ld:%02ld", | |
514 | eta / 3600, (eta % 3600) / 60, eta % 60); | |
515 | ||
516 | donedbl = uint64_to_double(done); | |
517 | sizedbl = uint64_to_double(size); | |
518 | pct = (int) (100 * (donedbl * 1.0 / sizedbl)); | |
519 | ||
520 | { | |
521 | char donekb[40]; | |
522 | /* divide by 1024 to provide kB */ | |
523 | uint64_decimal(uint64_shift_right(done, 10), donekb); | |
524 | len = printf("\r%-25.25s | %s kB | %5.1f kB/s | ETA: %8s | %3d%%", | |
525 | name, | |
526 | donekb, ratebs / 1024.0, etastr, pct); | |
527 | if (len < prev_stats_len) | |
528 | printf("%*s", prev_stats_len - len, ""); | |
529 | prev_stats_len = len; | |
530 | ||
531 | if (uint64_compare(done, size) == 0) | |
532 | printf("\n"); | |
533 | ||
534 | fflush(stdout); | |
535 | } | |
536 | ||
537 | free(etastr); | |
538 | } | |
539 | ||
540 | /* | |
541 | * Find a colon in str and return a pointer to the colon. | |
542 | * This is used to separate hostname from filename. | |
543 | */ | |
544 | static char *colon(char *str) | |
545 | { | |
546 | /* We ignore a leading colon, since the hostname cannot be | |
547 | empty. We also ignore a colon as second character because | |
548 | of filenames like f:myfile.txt. */ | |
549 | if (str[0] == '\0' || str[0] == ':' || | |
550 | (str[0] != '[' && str[1] == ':')) | |
551 | return (NULL); | |
552 | while (*str != '\0' && *str != ':' && *str != '/' && *str != '\\') { | |
553 | if (*str == '[') { | |
554 | /* Skip over IPv6 literal addresses | |
555 | * (eg: 'jeroen@[2001:db8::1]:myfile.txt') */ | |
556 | char *ipv6_end = strchr(str, ']'); | |
557 | if (ipv6_end) { | |
558 | str = ipv6_end; | |
559 | } | |
560 | } | |
561 | str++; | |
562 | } | |
563 | if (*str == ':') | |
564 | return (str); | |
565 | else | |
566 | return (NULL); | |
567 | } | |
568 | ||
569 | /* | |
570 | * Return a pointer to the portion of str that comes after the last | |
571 | * slash (or backslash or colon, if `local' is TRUE). | |
572 | */ | |
573 | static char *stripslashes(char *str, int local) | |
574 | { | |
575 | char *p; | |
576 | ||
577 | if (local) { | |
578 | p = strchr(str, ':'); | |
579 | if (p) str = p+1; | |
580 | } | |
581 | ||
582 | p = strrchr(str, '/'); | |
583 | if (p) str = p+1; | |
584 | ||
585 | if (local) { | |
586 | p = strrchr(str, '\\'); | |
587 | if (p) str = p+1; | |
588 | } | |
589 | ||
590 | return str; | |
591 | } | |
592 | ||
593 | /* | |
594 | * Determine whether a string is entirely composed of dots. | |
595 | */ | |
596 | static int is_dots(char *str) | |
597 | { | |
598 | return str[strspn(str, ".")] == '\0'; | |
599 | } | |
600 | ||
601 | /* | |
602 | * Wait for a response from the other side. | |
603 | * Return 0 if ok, -1 if error. | |
604 | */ | |
605 | static int response(void) | |
606 | { | |
607 | char ch, resp, rbuf[2048]; | |
608 | int p; | |
609 | ||
610 | if (ssh_scp_recv((unsigned char *) &resp, 1) <= 0) | |
611 | bump("Lost connection"); | |
612 | ||
613 | p = 0; | |
614 | switch (resp) { | |
615 | case 0: /* ok */ | |
616 | return (0); | |
617 | default: | |
618 | rbuf[p++] = resp; | |
619 | /* fallthrough */ | |
620 | case 1: /* error */ | |
621 | case 2: /* fatal error */ | |
622 | do { | |
623 | if (ssh_scp_recv((unsigned char *) &ch, 1) <= 0) | |
624 | bump("Protocol error: Lost connection"); | |
625 | rbuf[p++] = ch; | |
626 | } while (p < sizeof(rbuf) && ch != '\n'); | |
627 | rbuf[p - 1] = '\0'; | |
628 | if (resp == 1) | |
629 | tell_user(stderr, "%s\n", rbuf); | |
630 | else | |
631 | bump("%s", rbuf); | |
632 | errs++; | |
633 | return (-1); | |
634 | } | |
635 | } | |
636 | ||
637 | int sftp_recvdata(char *buf, int len) | |
638 | { | |
639 | return ssh_scp_recv((unsigned char *) buf, len); | |
640 | } | |
641 | int sftp_senddata(char *buf, int len) | |
642 | { | |
643 | back->send(backhandle, buf, len); | |
644 | return 1; | |
645 | } | |
646 | ||
647 | /* ---------------------------------------------------------------------- | |
648 | * sftp-based replacement for the hacky `pscp -ls'. | |
649 | */ | |
650 | static int sftp_ls_compare(const void *av, const void *bv) | |
651 | { | |
652 | const struct fxp_name *a = (const struct fxp_name *) av; | |
653 | const struct fxp_name *b = (const struct fxp_name *) bv; | |
654 | return strcmp(a->filename, b->filename); | |
655 | } | |
656 | void scp_sftp_listdir(char *dirname) | |
657 | { | |
658 | struct fxp_handle *dirh; | |
659 | struct fxp_names *names; | |
660 | struct fxp_name *ournames; | |
661 | struct sftp_packet *pktin; | |
662 | struct sftp_request *req, *rreq; | |
663 | int nnames, namesize; | |
664 | int i; | |
665 | ||
666 | if (!fxp_init()) { | |
667 | tell_user(stderr, "unable to initialise SFTP: %s", fxp_error()); | |
668 | errs++; | |
669 | return; | |
670 | } | |
671 | ||
672 | printf("Listing directory %s\n", dirname); | |
673 | ||
674 | sftp_register(req = fxp_opendir_send(dirname)); | |
675 | rreq = sftp_find_request(pktin = sftp_recv()); | |
676 | assert(rreq == req); | |
677 | dirh = fxp_opendir_recv(pktin, rreq); | |
678 | ||
679 | if (dirh == NULL) { | |
680 | printf("Unable to open %s: %s\n", dirname, fxp_error()); | |
681 | } else { | |
682 | nnames = namesize = 0; | |
683 | ournames = NULL; | |
684 | ||
685 | while (1) { | |
686 | ||
687 | sftp_register(req = fxp_readdir_send(dirh)); | |
688 | rreq = sftp_find_request(pktin = sftp_recv()); | |
689 | assert(rreq == req); | |
690 | names = fxp_readdir_recv(pktin, rreq); | |
691 | ||
692 | if (names == NULL) { | |
693 | if (fxp_error_type() == SSH_FX_EOF) | |
694 | break; | |
695 | printf("Reading directory %s: %s\n", dirname, fxp_error()); | |
696 | break; | |
697 | } | |
698 | if (names->nnames == 0) { | |
699 | fxp_free_names(names); | |
700 | break; | |
701 | } | |
702 | ||
703 | if (nnames + names->nnames >= namesize) { | |
704 | namesize += names->nnames + 128; | |
705 | ournames = sresize(ournames, namesize, struct fxp_name); | |
706 | } | |
707 | ||
708 | for (i = 0; i < names->nnames; i++) | |
709 | ournames[nnames++] = names->names[i]; | |
710 | names->nnames = 0; /* prevent free_names */ | |
711 | fxp_free_names(names); | |
712 | } | |
713 | sftp_register(req = fxp_close_send(dirh)); | |
714 | rreq = sftp_find_request(pktin = sftp_recv()); | |
715 | assert(rreq == req); | |
716 | fxp_close_recv(pktin, rreq); | |
717 | ||
718 | /* | |
719 | * Now we have our filenames. Sort them by actual file | |
720 | * name, and then output the longname parts. | |
721 | */ | |
722 | qsort(ournames, nnames, sizeof(*ournames), sftp_ls_compare); | |
723 | ||
724 | /* | |
725 | * And print them. | |
726 | */ | |
727 | for (i = 0; i < nnames; i++) | |
728 | printf("%s\n", ournames[i].longname); | |
729 | } | |
730 | } | |
731 | ||
732 | /* ---------------------------------------------------------------------- | |
733 | * Helper routines that contain the actual SCP protocol elements, | |
734 | * implemented both as SCP1 and SFTP. | |
735 | */ | |
736 | ||
737 | static struct scp_sftp_dirstack { | |
738 | struct scp_sftp_dirstack *next; | |
739 | struct fxp_name *names; | |
740 | int namepos, namelen; | |
741 | char *dirpath; | |
742 | char *wildcard; | |
743 | int matched_something; /* wildcard match set was non-empty */ | |
744 | } *scp_sftp_dirstack_head; | |
745 | static char *scp_sftp_remotepath, *scp_sftp_currentname; | |
746 | static char *scp_sftp_wildcard; | |
747 | static int scp_sftp_targetisdir, scp_sftp_donethistarget; | |
748 | static int scp_sftp_preserve, scp_sftp_recursive; | |
749 | static unsigned long scp_sftp_mtime, scp_sftp_atime; | |
750 | static int scp_has_times; | |
751 | static struct fxp_handle *scp_sftp_filehandle; | |
752 | static struct fxp_xfer *scp_sftp_xfer; | |
753 | static uint64 scp_sftp_fileoffset; | |
754 | ||
755 | int scp_source_setup(char *target, int shouldbedir) | |
756 | { | |
757 | if (using_sftp) { | |
758 | /* | |
759 | * Find out whether the target filespec is in fact a | |
760 | * directory. | |
761 | */ | |
762 | struct sftp_packet *pktin; | |
763 | struct sftp_request *req, *rreq; | |
764 | struct fxp_attrs attrs; | |
765 | int ret; | |
766 | ||
767 | if (!fxp_init()) { | |
768 | tell_user(stderr, "unable to initialise SFTP: %s", fxp_error()); | |
769 | errs++; | |
770 | return 1; | |
771 | } | |
772 | ||
773 | sftp_register(req = fxp_stat_send(target)); | |
774 | rreq = sftp_find_request(pktin = sftp_recv()); | |
775 | assert(rreq == req); | |
776 | ret = fxp_stat_recv(pktin, rreq, &attrs); | |
777 | ||
778 | if (!ret || !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS)) | |
779 | scp_sftp_targetisdir = 0; | |
780 | else | |
781 | scp_sftp_targetisdir = (attrs.permissions & 0040000) != 0; | |
782 | ||
783 | if (shouldbedir && !scp_sftp_targetisdir) { | |
784 | bump("pscp: remote filespec %s: not a directory\n", target); | |
785 | } | |
786 | ||
787 | scp_sftp_remotepath = dupstr(target); | |
788 | ||
789 | scp_has_times = 0; | |
790 | } else { | |
791 | (void) response(); | |
792 | } | |
793 | return 0; | |
794 | } | |
795 | ||
796 | int scp_send_errmsg(char *str) | |
797 | { | |
798 | if (using_sftp) { | |
799 | /* do nothing; we never need to send our errors to the server */ | |
800 | } else { | |
801 | back->send(backhandle, "\001", 1);/* scp protocol error prefix */ | |
802 | back->send(backhandle, str, strlen(str)); | |
803 | } | |
804 | return 0; /* can't fail */ | |
805 | } | |
806 | ||
807 | int scp_send_filetimes(unsigned long mtime, unsigned long atime) | |
808 | { | |
809 | if (using_sftp) { | |
810 | scp_sftp_mtime = mtime; | |
811 | scp_sftp_atime = atime; | |
812 | scp_has_times = 1; | |
813 | return 0; | |
814 | } else { | |
815 | char buf[80]; | |
816 | sprintf(buf, "T%lu 0 %lu 0\n", mtime, atime); | |
817 | back->send(backhandle, buf, strlen(buf)); | |
818 | return response(); | |
819 | } | |
820 | } | |
821 | ||
822 | int scp_send_filename(char *name, uint64 size, int modes) | |
823 | { | |
824 | if (using_sftp) { | |
825 | char *fullname; | |
826 | struct sftp_packet *pktin; | |
827 | struct sftp_request *req, *rreq; | |
828 | ||
829 | if (scp_sftp_targetisdir) { | |
830 | fullname = dupcat(scp_sftp_remotepath, "/", name, NULL); | |
831 | } else { | |
832 | fullname = dupstr(scp_sftp_remotepath); | |
833 | } | |
834 | ||
835 | sftp_register(req = fxp_open_send(fullname, SSH_FXF_WRITE | | |
836 | SSH_FXF_CREAT | SSH_FXF_TRUNC)); | |
837 | rreq = sftp_find_request(pktin = sftp_recv()); | |
838 | assert(rreq == req); | |
839 | scp_sftp_filehandle = fxp_open_recv(pktin, rreq); | |
840 | ||
841 | if (!scp_sftp_filehandle) { | |
842 | tell_user(stderr, "pscp: unable to open %s: %s", | |
843 | fullname, fxp_error()); | |
844 | errs++; | |
845 | return 1; | |
846 | } | |
847 | scp_sftp_fileoffset = uint64_make(0, 0); | |
848 | scp_sftp_xfer = xfer_upload_init(scp_sftp_filehandle, | |
849 | scp_sftp_fileoffset); | |
850 | sfree(fullname); | |
851 | return 0; | |
852 | } else { | |
853 | char buf[40]; | |
854 | char sizestr[40]; | |
855 | uint64_decimal(size, sizestr); | |
856 | sprintf(buf, "C%04o %s ", modes, sizestr); | |
857 | back->send(backhandle, buf, strlen(buf)); | |
858 | back->send(backhandle, name, strlen(name)); | |
859 | back->send(backhandle, "\n", 1); | |
860 | return response(); | |
861 | } | |
862 | } | |
863 | ||
864 | int scp_send_filedata(char *data, int len) | |
865 | { | |
866 | if (using_sftp) { | |
867 | int ret; | |
868 | struct sftp_packet *pktin; | |
869 | ||
870 | if (!scp_sftp_filehandle) { | |
871 | return 1; | |
872 | } | |
873 | ||
874 | while (!xfer_upload_ready(scp_sftp_xfer)) { | |
875 | pktin = sftp_recv(); | |
876 | ret = xfer_upload_gotpkt(scp_sftp_xfer, pktin); | |
877 | if (!ret) { | |
878 | tell_user(stderr, "error while writing: %s\n", fxp_error()); | |
879 | errs++; | |
880 | return 1; | |
881 | } | |
882 | } | |
883 | ||
884 | xfer_upload_data(scp_sftp_xfer, data, len); | |
885 | ||
886 | scp_sftp_fileoffset = uint64_add32(scp_sftp_fileoffset, len); | |
887 | return 0; | |
888 | } else { | |
889 | int bufsize = back->send(backhandle, data, len); | |
890 | ||
891 | /* | |
892 | * If the network transfer is backing up - that is, the | |
893 | * remote site is not accepting data as fast as we can | |
894 | * produce it - then we must loop on network events until | |
895 | * we have space in the buffer again. | |
896 | */ | |
897 | while (bufsize > MAX_SCP_BUFSIZE) { | |
898 | if (ssh_sftp_loop_iteration() < 0) | |
899 | return 1; | |
900 | bufsize = back->sendbuffer(backhandle); | |
901 | } | |
902 | ||
903 | return 0; | |
904 | } | |
905 | } | |
906 | ||
907 | int scp_send_finish(void) | |
908 | { | |
909 | if (using_sftp) { | |
910 | struct fxp_attrs attrs; | |
911 | struct sftp_packet *pktin; | |
912 | struct sftp_request *req, *rreq; | |
913 | int ret; | |
914 | ||
915 | while (!xfer_done(scp_sftp_xfer)) { | |
916 | pktin = sftp_recv(); | |
917 | xfer_upload_gotpkt(scp_sftp_xfer, pktin); | |
918 | } | |
919 | xfer_cleanup(scp_sftp_xfer); | |
920 | ||
921 | if (!scp_sftp_filehandle) { | |
922 | return 1; | |
923 | } | |
924 | if (scp_has_times) { | |
925 | attrs.flags = SSH_FILEXFER_ATTR_ACMODTIME; | |
926 | attrs.atime = scp_sftp_atime; | |
927 | attrs.mtime = scp_sftp_mtime; | |
928 | sftp_register(req = fxp_fsetstat_send(scp_sftp_filehandle, attrs)); | |
929 | rreq = sftp_find_request(pktin = sftp_recv()); | |
930 | assert(rreq == req); | |
931 | ret = fxp_fsetstat_recv(pktin, rreq); | |
932 | if (!ret) { | |
933 | tell_user(stderr, "unable to set file times: %s\n", fxp_error()); | |
934 | errs++; | |
935 | } | |
936 | } | |
937 | sftp_register(req = fxp_close_send(scp_sftp_filehandle)); | |
938 | rreq = sftp_find_request(pktin = sftp_recv()); | |
939 | assert(rreq == req); | |
940 | fxp_close_recv(pktin, rreq); | |
941 | scp_has_times = 0; | |
942 | return 0; | |
943 | } else { | |
944 | back->send(backhandle, "", 1); | |
945 | return response(); | |
946 | } | |
947 | } | |
948 | ||
949 | char *scp_save_remotepath(void) | |
950 | { | |
951 | if (using_sftp) | |
952 | return scp_sftp_remotepath; | |
953 | else | |
954 | return NULL; | |
955 | } | |
956 | ||
957 | void scp_restore_remotepath(char *data) | |
958 | { | |
959 | if (using_sftp) | |
960 | scp_sftp_remotepath = data; | |
961 | } | |
962 | ||
963 | int scp_send_dirname(char *name, int modes) | |
964 | { | |
965 | if (using_sftp) { | |
966 | char *fullname; | |
967 | char const *err; | |
968 | struct fxp_attrs attrs; | |
969 | struct sftp_packet *pktin; | |
970 | struct sftp_request *req, *rreq; | |
971 | int ret; | |
972 | ||
973 | if (scp_sftp_targetisdir) { | |
974 | fullname = dupcat(scp_sftp_remotepath, "/", name, NULL); | |
975 | } else { | |
976 | fullname = dupstr(scp_sftp_remotepath); | |
977 | } | |
978 | ||
979 | /* | |
980 | * We don't worry about whether we managed to create the | |
981 | * directory, because if it exists already it's OK just to | |
982 | * use it. Instead, we will stat it afterwards, and if it | |
983 | * exists and is a directory we will assume we were either | |
984 | * successful or it didn't matter. | |
985 | */ | |
986 | sftp_register(req = fxp_mkdir_send(fullname)); | |
987 | rreq = sftp_find_request(pktin = sftp_recv()); | |
988 | assert(rreq == req); | |
989 | ret = fxp_mkdir_recv(pktin, rreq); | |
990 | ||
991 | if (!ret) | |
992 | err = fxp_error(); | |
993 | else | |
994 | err = "server reported no error"; | |
995 | ||
996 | sftp_register(req = fxp_stat_send(fullname)); | |
997 | rreq = sftp_find_request(pktin = sftp_recv()); | |
998 | assert(rreq == req); | |
999 | ret = fxp_stat_recv(pktin, rreq, &attrs); | |
1000 | ||
1001 | if (!ret || !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS) || | |
1002 | !(attrs.permissions & 0040000)) { | |
1003 | tell_user(stderr, "unable to create directory %s: %s", | |
1004 | fullname, err); | |
1005 | errs++; | |
1006 | return 1; | |
1007 | } | |
1008 | ||
1009 | scp_sftp_remotepath = fullname; | |
1010 | ||
1011 | return 0; | |
1012 | } else { | |
1013 | char buf[40]; | |
1014 | sprintf(buf, "D%04o 0 ", modes); | |
1015 | back->send(backhandle, buf, strlen(buf)); | |
1016 | back->send(backhandle, name, strlen(name)); | |
1017 | back->send(backhandle, "\n", 1); | |
1018 | return response(); | |
1019 | } | |
1020 | } | |
1021 | ||
1022 | int scp_send_enddir(void) | |
1023 | { | |
1024 | if (using_sftp) { | |
1025 | sfree(scp_sftp_remotepath); | |
1026 | return 0; | |
1027 | } else { | |
1028 | back->send(backhandle, "E\n", 2); | |
1029 | return response(); | |
1030 | } | |
1031 | } | |
1032 | ||
1033 | /* | |
1034 | * Yes, I know; I have an scp_sink_setup _and_ an scp_sink_init. | |
1035 | * That's bad. The difference is that scp_sink_setup is called once | |
1036 | * right at the start, whereas scp_sink_init is called to | |
1037 | * initialise every level of recursion in the protocol. | |
1038 | */ | |
1039 | int scp_sink_setup(char *source, int preserve, int recursive) | |
1040 | { | |
1041 | if (using_sftp) { | |
1042 | char *newsource; | |
1043 | ||
1044 | if (!fxp_init()) { | |
1045 | tell_user(stderr, "unable to initialise SFTP: %s", fxp_error()); | |
1046 | errs++; | |
1047 | return 1; | |
1048 | } | |
1049 | /* | |
1050 | * It's possible that the source string we've been given | |
1051 | * contains a wildcard. If so, we must split the directory | |
1052 | * away from the wildcard itself (throwing an error if any | |
1053 | * wildcardness comes before the final slash) and arrange | |
1054 | * things so that a dirstack entry will be set up. | |
1055 | */ | |
1056 | newsource = snewn(1+strlen(source), char); | |
1057 | if (!wc_unescape(newsource, source)) { | |
1058 | /* Yes, here we go; it's a wildcard. Bah. */ | |
1059 | char *dupsource, *lastpart, *dirpart, *wildcard; | |
1060 | dupsource = dupstr(source); | |
1061 | lastpart = stripslashes(dupsource, 0); | |
1062 | wildcard = dupstr(lastpart); | |
1063 | *lastpart = '\0'; | |
1064 | if (*dupsource && dupsource[1]) { | |
1065 | /* | |
1066 | * The remains of dupsource are at least two | |
1067 | * characters long, meaning the pathname wasn't | |
1068 | * empty or just `/'. Hence, we remove the trailing | |
1069 | * slash. | |
1070 | */ | |
1071 | lastpart[-1] = '\0'; | |
1072 | } else if (!*dupsource) { | |
1073 | /* | |
1074 | * The remains of dupsource are _empty_ - the whole | |
1075 | * pathname was a wildcard. Hence we need to | |
1076 | * replace it with ".". | |
1077 | */ | |
1078 | sfree(dupsource); | |
1079 | dupsource = dupstr("."); | |
1080 | } | |
1081 | ||
1082 | /* | |
1083 | * Now we have separated our string into dupsource (the | |
1084 | * directory part) and wildcard. Both of these will | |
1085 | * need freeing at some point. Next step is to remove | |
1086 | * wildcard escapes from the directory part, throwing | |
1087 | * an error if it contains a real wildcard. | |
1088 | */ | |
1089 | dirpart = snewn(1+strlen(dupsource), char); | |
1090 | if (!wc_unescape(dirpart, dupsource)) { | |
1091 | tell_user(stderr, "%s: multiple-level wildcards unsupported", | |
1092 | source); | |
1093 | errs++; | |
1094 | sfree(dirpart); | |
1095 | sfree(wildcard); | |
1096 | sfree(dupsource); | |
1097 | return 1; | |
1098 | } | |
1099 | ||
1100 | /* | |
1101 | * Now we have dirpart (unescaped, ie a valid remote | |
1102 | * path), and wildcard (a wildcard). This will be | |
1103 | * sufficient to arrange a dirstack entry. | |
1104 | */ | |
1105 | scp_sftp_remotepath = dirpart; | |
1106 | scp_sftp_wildcard = wildcard; | |
1107 | sfree(dupsource); | |
1108 | } else { | |
1109 | scp_sftp_remotepath = newsource; | |
1110 | scp_sftp_wildcard = NULL; | |
1111 | } | |
1112 | scp_sftp_preserve = preserve; | |
1113 | scp_sftp_recursive = recursive; | |
1114 | scp_sftp_donethistarget = 0; | |
1115 | scp_sftp_dirstack_head = NULL; | |
1116 | } | |
1117 | return 0; | |
1118 | } | |
1119 | ||
1120 | int scp_sink_init(void) | |
1121 | { | |
1122 | if (!using_sftp) { | |
1123 | back->send(backhandle, "", 1); | |
1124 | } | |
1125 | return 0; | |
1126 | } | |
1127 | ||
1128 | #define SCP_SINK_FILE 1 | |
1129 | #define SCP_SINK_DIR 2 | |
1130 | #define SCP_SINK_ENDDIR 3 | |
1131 | #define SCP_SINK_RETRY 4 /* not an action; just try again */ | |
1132 | struct scp_sink_action { | |
1133 | int action; /* FILE, DIR, ENDDIR */ | |
1134 | char *buf; /* will need freeing after use */ | |
1135 | char *name; /* filename or dirname (not ENDDIR) */ | |
1136 | int mode; /* access mode (not ENDDIR) */ | |
1137 | uint64 size; /* file size (not ENDDIR) */ | |
1138 | int settime; /* 1 if atime and mtime are filled */ | |
1139 | unsigned long atime, mtime; /* access times for the file */ | |
1140 | }; | |
1141 | ||
1142 | int scp_get_sink_action(struct scp_sink_action *act) | |
1143 | { | |
1144 | if (using_sftp) { | |
1145 | char *fname; | |
1146 | int must_free_fname; | |
1147 | struct fxp_attrs attrs; | |
1148 | struct sftp_packet *pktin; | |
1149 | struct sftp_request *req, *rreq; | |
1150 | int ret; | |
1151 | ||
1152 | if (!scp_sftp_dirstack_head) { | |
1153 | if (!scp_sftp_donethistarget) { | |
1154 | /* | |
1155 | * Simple case: we are only dealing with one file. | |
1156 | */ | |
1157 | fname = scp_sftp_remotepath; | |
1158 | must_free_fname = 0; | |
1159 | scp_sftp_donethistarget = 1; | |
1160 | } else { | |
1161 | /* | |
1162 | * Even simpler case: one file _which we've done_. | |
1163 | * Return 1 (finished). | |
1164 | */ | |
1165 | return 1; | |
1166 | } | |
1167 | } else { | |
1168 | /* | |
1169 | * We're now in the middle of stepping through a list | |
1170 | * of names returned from fxp_readdir(); so let's carry | |
1171 | * on. | |
1172 | */ | |
1173 | struct scp_sftp_dirstack *head = scp_sftp_dirstack_head; | |
1174 | while (head->namepos < head->namelen && | |
1175 | (is_dots(head->names[head->namepos].filename) || | |
1176 | (head->wildcard && | |
1177 | !wc_match(head->wildcard, | |
1178 | head->names[head->namepos].filename)))) | |
1179 | head->namepos++; /* skip . and .. */ | |
1180 | if (head->namepos < head->namelen) { | |
1181 | head->matched_something = 1; | |
1182 | fname = dupcat(head->dirpath, "/", | |
1183 | head->names[head->namepos++].filename, | |
1184 | NULL); | |
1185 | must_free_fname = 1; | |
1186 | } else { | |
1187 | /* | |
1188 | * We've come to the end of the list; pop it off | |
1189 | * the stack and return an ENDDIR action (or RETRY | |
1190 | * if this was a wildcard match). | |
1191 | */ | |
1192 | if (head->wildcard) { | |
1193 | act->action = SCP_SINK_RETRY; | |
1194 | if (!head->matched_something) { | |
1195 | tell_user(stderr, "pscp: wildcard '%s' matched " | |
1196 | "no files", head->wildcard); | |
1197 | errs++; | |
1198 | } | |
1199 | sfree(head->wildcard); | |
1200 | ||
1201 | } else { | |
1202 | act->action = SCP_SINK_ENDDIR; | |
1203 | } | |
1204 | ||
1205 | sfree(head->dirpath); | |
1206 | sfree(head->names); | |
1207 | scp_sftp_dirstack_head = head->next; | |
1208 | sfree(head); | |
1209 | ||
1210 | return 0; | |
1211 | } | |
1212 | } | |
1213 | ||
1214 | /* | |
1215 | * Now we have a filename. Stat it, and see if it's a file | |
1216 | * or a directory. | |
1217 | */ | |
1218 | sftp_register(req = fxp_stat_send(fname)); | |
1219 | rreq = sftp_find_request(pktin = sftp_recv()); | |
1220 | assert(rreq == req); | |
1221 | ret = fxp_stat_recv(pktin, rreq, &attrs); | |
1222 | ||
1223 | if (!ret || !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS)) { | |
1224 | tell_user(stderr, "unable to identify %s: %s", fname, | |
1225 | ret ? "file type not supplied" : fxp_error()); | |
1226 | errs++; | |
1227 | return 1; | |
1228 | } | |
1229 | ||
1230 | if (attrs.permissions & 0040000) { | |
1231 | struct scp_sftp_dirstack *newitem; | |
1232 | struct fxp_handle *dirhandle; | |
1233 | int nnames, namesize; | |
1234 | struct fxp_name *ournames; | |
1235 | struct fxp_names *names; | |
1236 | ||
1237 | /* | |
1238 | * It's a directory. If we're not in recursive mode, | |
1239 | * this merits a complaint (which is fatal if the name | |
1240 | * was specified directly, but not if it was matched by | |
1241 | * a wildcard). | |
1242 | * | |
1243 | * We skip this complaint completely if | |
1244 | * scp_sftp_wildcard is set, because that's an | |
1245 | * indication that we're not actually supposed to | |
1246 | * _recursively_ transfer the dir, just scan it for | |
1247 | * things matching the wildcard. | |
1248 | */ | |
1249 | if (!scp_sftp_recursive && !scp_sftp_wildcard) { | |
1250 | tell_user(stderr, "pscp: %s: is a directory", fname); | |
1251 | errs++; | |
1252 | if (must_free_fname) sfree(fname); | |
1253 | if (scp_sftp_dirstack_head) { | |
1254 | act->action = SCP_SINK_RETRY; | |
1255 | return 0; | |
1256 | } else { | |
1257 | return 1; | |
1258 | } | |
1259 | } | |
1260 | ||
1261 | /* | |
1262 | * Otherwise, the fun begins. We must fxp_opendir() the | |
1263 | * directory, slurp the filenames into memory, return | |
1264 | * SCP_SINK_DIR (unless this is a wildcard match), and | |
1265 | * set targetisdir. The next time we're called, we will | |
1266 | * run through the list of filenames one by one, | |
1267 | * matching them against a wildcard if present. | |
1268 | * | |
1269 | * If targetisdir is _already_ set (meaning we're | |
1270 | * already in the middle of going through another such | |
1271 | * list), we must push the other (target,namelist) pair | |
1272 | * on a stack. | |
1273 | */ | |
1274 | sftp_register(req = fxp_opendir_send(fname)); | |
1275 | rreq = sftp_find_request(pktin = sftp_recv()); | |
1276 | assert(rreq == req); | |
1277 | dirhandle = fxp_opendir_recv(pktin, rreq); | |
1278 | ||
1279 | if (!dirhandle) { | |
1280 | tell_user(stderr, "scp: unable to open directory %s: %s", | |
1281 | fname, fxp_error()); | |
1282 | if (must_free_fname) sfree(fname); | |
1283 | errs++; | |
1284 | return 1; | |
1285 | } | |
1286 | nnames = namesize = 0; | |
1287 | ournames = NULL; | |
1288 | while (1) { | |
1289 | int i; | |
1290 | ||
1291 | sftp_register(req = fxp_readdir_send(dirhandle)); | |
1292 | rreq = sftp_find_request(pktin = sftp_recv()); | |
1293 | assert(rreq == req); | |
1294 | names = fxp_readdir_recv(pktin, rreq); | |
1295 | ||
1296 | if (names == NULL) { | |
1297 | if (fxp_error_type() == SSH_FX_EOF) | |
1298 | break; | |
1299 | tell_user(stderr, "scp: reading directory %s: %s\n", | |
1300 | fname, fxp_error()); | |
1301 | if (must_free_fname) sfree(fname); | |
1302 | sfree(ournames); | |
1303 | errs++; | |
1304 | return 1; | |
1305 | } | |
1306 | if (names->nnames == 0) { | |
1307 | fxp_free_names(names); | |
1308 | break; | |
1309 | } | |
1310 | if (nnames + names->nnames >= namesize) { | |
1311 | namesize += names->nnames + 128; | |
1312 | ournames = sresize(ournames, namesize, struct fxp_name); | |
1313 | } | |
1314 | for (i = 0; i < names->nnames; i++) { | |
1315 | if (!strcmp(names->names[i].filename, ".") || | |
1316 | !strcmp(names->names[i].filename, "..")) { | |
1317 | /* | |
1318 | * . and .. are normal consequences of | |
1319 | * reading a directory, and aren't worth | |
1320 | * complaining about. | |
1321 | */ | |
1322 | } else if (!vet_filename(names->names[i].filename)) { | |
1323 | tell_user(stderr, "ignoring potentially dangerous server-" | |
1324 | "supplied filename '%s'\n", | |
1325 | names->names[i].filename); | |
1326 | } else | |
1327 | ournames[nnames++] = names->names[i]; | |
1328 | } | |
1329 | names->nnames = 0; /* prevent free_names */ | |
1330 | fxp_free_names(names); | |
1331 | } | |
1332 | sftp_register(req = fxp_close_send(dirhandle)); | |
1333 | rreq = sftp_find_request(pktin = sftp_recv()); | |
1334 | assert(rreq == req); | |
1335 | fxp_close_recv(pktin, rreq); | |
1336 | ||
1337 | newitem = snew(struct scp_sftp_dirstack); | |
1338 | newitem->next = scp_sftp_dirstack_head; | |
1339 | newitem->names = ournames; | |
1340 | newitem->namepos = 0; | |
1341 | newitem->namelen = nnames; | |
1342 | if (must_free_fname) | |
1343 | newitem->dirpath = fname; | |
1344 | else | |
1345 | newitem->dirpath = dupstr(fname); | |
1346 | if (scp_sftp_wildcard) { | |
1347 | newitem->wildcard = scp_sftp_wildcard; | |
1348 | newitem->matched_something = 0; | |
1349 | scp_sftp_wildcard = NULL; | |
1350 | } else { | |
1351 | newitem->wildcard = NULL; | |
1352 | } | |
1353 | scp_sftp_dirstack_head = newitem; | |
1354 | ||
1355 | if (newitem->wildcard) { | |
1356 | act->action = SCP_SINK_RETRY; | |
1357 | } else { | |
1358 | act->action = SCP_SINK_DIR; | |
1359 | act->buf = dupstr(stripslashes(fname, 0)); | |
1360 | act->name = act->buf; | |
1361 | act->size = uint64_make(0,0); /* duhh, it's a directory */ | |
1362 | act->mode = 07777 & attrs.permissions; | |
1363 | if (scp_sftp_preserve && | |
1364 | (attrs.flags & SSH_FILEXFER_ATTR_ACMODTIME)) { | |
1365 | act->atime = attrs.atime; | |
1366 | act->mtime = attrs.mtime; | |
1367 | act->settime = 1; | |
1368 | } else | |
1369 | act->settime = 0; | |
1370 | } | |
1371 | return 0; | |
1372 | ||
1373 | } else { | |
1374 | /* | |
1375 | * It's a file. Return SCP_SINK_FILE. | |
1376 | */ | |
1377 | act->action = SCP_SINK_FILE; | |
1378 | act->buf = dupstr(stripslashes(fname, 0)); | |
1379 | act->name = act->buf; | |
1380 | if (attrs.flags & SSH_FILEXFER_ATTR_SIZE) { | |
1381 | act->size = attrs.size; | |
1382 | } else | |
1383 | act->size = uint64_make(ULONG_MAX,ULONG_MAX); /* no idea */ | |
1384 | act->mode = 07777 & attrs.permissions; | |
1385 | if (scp_sftp_preserve && | |
1386 | (attrs.flags & SSH_FILEXFER_ATTR_ACMODTIME)) { | |
1387 | act->atime = attrs.atime; | |
1388 | act->mtime = attrs.mtime; | |
1389 | act->settime = 1; | |
1390 | } else | |
1391 | act->settime = 0; | |
1392 | if (must_free_fname) | |
1393 | scp_sftp_currentname = fname; | |
1394 | else | |
1395 | scp_sftp_currentname = dupstr(fname); | |
1396 | return 0; | |
1397 | } | |
1398 | ||
1399 | } else { | |
1400 | int done = 0; | |
1401 | int i, bufsize; | |
1402 | int action; | |
1403 | char ch; | |
1404 | ||
1405 | act->settime = 0; | |
1406 | act->buf = NULL; | |
1407 | bufsize = 0; | |
1408 | ||
1409 | while (!done) { | |
1410 | if (ssh_scp_recv((unsigned char *) &ch, 1) <= 0) | |
1411 | return 1; | |
1412 | if (ch == '\n') | |
1413 | bump("Protocol error: Unexpected newline"); | |
1414 | i = 0; | |
1415 | action = ch; | |
1416 | do { | |
1417 | if (ssh_scp_recv((unsigned char *) &ch, 1) <= 0) | |
1418 | bump("Lost connection"); | |
1419 | if (i >= bufsize) { | |
1420 | bufsize = i + 128; | |
1421 | act->buf = sresize(act->buf, bufsize, char); | |
1422 | } | |
1423 | act->buf[i++] = ch; | |
1424 | } while (ch != '\n'); | |
1425 | act->buf[i - 1] = '\0'; | |
1426 | switch (action) { | |
1427 | case '\01': /* error */ | |
1428 | tell_user(stderr, "%s\n", act->buf); | |
1429 | errs++; | |
1430 | continue; /* go round again */ | |
1431 | case '\02': /* fatal error */ | |
1432 | bump("%s", act->buf); | |
1433 | case 'E': | |
1434 | back->send(backhandle, "", 1); | |
1435 | act->action = SCP_SINK_ENDDIR; | |
1436 | return 0; | |
1437 | case 'T': | |
1438 | if (sscanf(act->buf, "%ld %*d %ld %*d", | |
1439 | &act->mtime, &act->atime) == 2) { | |
1440 | act->settime = 1; | |
1441 | back->send(backhandle, "", 1); | |
1442 | continue; /* go round again */ | |
1443 | } | |
1444 | bump("Protocol error: Illegal time format"); | |
1445 | case 'C': | |
1446 | case 'D': | |
1447 | act->action = (action == 'C' ? SCP_SINK_FILE : SCP_SINK_DIR); | |
1448 | break; | |
1449 | default: | |
1450 | bump("Protocol error: Expected control record"); | |
1451 | } | |
1452 | /* | |
1453 | * We will go round this loop only once, unless we hit | |
1454 | * `continue' above. | |
1455 | */ | |
1456 | done = 1; | |
1457 | } | |
1458 | ||
1459 | /* | |
1460 | * If we get here, we must have seen SCP_SINK_FILE or | |
1461 | * SCP_SINK_DIR. | |
1462 | */ | |
1463 | { | |
1464 | char sizestr[40]; | |
1465 | ||
1466 | if (sscanf(act->buf, "%o %s %n", &act->mode, sizestr, &i) != 2) | |
1467 | bump("Protocol error: Illegal file descriptor format"); | |
1468 | act->size = uint64_from_decimal(sizestr); | |
1469 | act->name = act->buf + i; | |
1470 | return 0; | |
1471 | } | |
1472 | } | |
1473 | } | |
1474 | ||
1475 | int scp_accept_filexfer(void) | |
1476 | { | |
1477 | if (using_sftp) { | |
1478 | struct sftp_packet *pktin; | |
1479 | struct sftp_request *req, *rreq; | |
1480 | ||
1481 | sftp_register(req = fxp_open_send(scp_sftp_currentname, SSH_FXF_READ)); | |
1482 | rreq = sftp_find_request(pktin = sftp_recv()); | |
1483 | assert(rreq == req); | |
1484 | scp_sftp_filehandle = fxp_open_recv(pktin, rreq); | |
1485 | ||
1486 | if (!scp_sftp_filehandle) { | |
1487 | tell_user(stderr, "pscp: unable to open %s: %s", | |
1488 | scp_sftp_currentname, fxp_error()); | |
1489 | errs++; | |
1490 | return 1; | |
1491 | } | |
1492 | scp_sftp_fileoffset = uint64_make(0, 0); | |
1493 | scp_sftp_xfer = xfer_download_init(scp_sftp_filehandle, | |
1494 | scp_sftp_fileoffset); | |
1495 | sfree(scp_sftp_currentname); | |
1496 | return 0; | |
1497 | } else { | |
1498 | back->send(backhandle, "", 1); | |
1499 | return 0; /* can't fail */ | |
1500 | } | |
1501 | } | |
1502 | ||
1503 | int scp_recv_filedata(char *data, int len) | |
1504 | { | |
1505 | if (using_sftp) { | |
1506 | struct sftp_packet *pktin; | |
1507 | int ret, actuallen; | |
1508 | void *vbuf; | |
1509 | ||
1510 | xfer_download_queue(scp_sftp_xfer); | |
1511 | pktin = sftp_recv(); | |
1512 | ret = xfer_download_gotpkt(scp_sftp_xfer, pktin); | |
1513 | ||
1514 | if (ret < 0) { | |
1515 | tell_user(stderr, "pscp: error while reading: %s", fxp_error()); | |
1516 | errs++; | |
1517 | return -1; | |
1518 | } | |
1519 | ||
1520 | if (xfer_download_data(scp_sftp_xfer, &vbuf, &actuallen)) { | |
1521 | /* | |
1522 | * This assertion relies on the fact that the natural | |
1523 | * block size used in the xfer manager is at most that | |
1524 | * used in this module. I don't like crossing layers in | |
1525 | * this way, but it'll do for now. | |
1526 | */ | |
1527 | assert(actuallen <= len); | |
1528 | memcpy(data, vbuf, actuallen); | |
1529 | sfree(vbuf); | |
1530 | } else | |
1531 | actuallen = 0; | |
1532 | ||
1533 | scp_sftp_fileoffset = uint64_add32(scp_sftp_fileoffset, actuallen); | |
1534 | ||
1535 | return actuallen; | |
1536 | } else { | |
1537 | return ssh_scp_recv((unsigned char *) data, len); | |
1538 | } | |
1539 | } | |
1540 | ||
1541 | int scp_finish_filerecv(void) | |
1542 | { | |
1543 | if (using_sftp) { | |
1544 | struct sftp_packet *pktin; | |
1545 | struct sftp_request *req, *rreq; | |
1546 | ||
1547 | /* | |
1548 | * Ensure that xfer_done() will work correctly, so we can | |
1549 | * clean up any outstanding requests from the file | |
1550 | * transfer. | |
1551 | */ | |
1552 | xfer_set_error(scp_sftp_xfer); | |
1553 | while (!xfer_done(scp_sftp_xfer)) { | |
1554 | void *vbuf; | |
1555 | int len; | |
1556 | ||
1557 | pktin = sftp_recv(); | |
1558 | xfer_download_gotpkt(scp_sftp_xfer, pktin); | |
1559 | if (xfer_download_data(scp_sftp_xfer, &vbuf, &len)) | |
1560 | sfree(vbuf); | |
1561 | } | |
1562 | xfer_cleanup(scp_sftp_xfer); | |
1563 | ||
1564 | sftp_register(req = fxp_close_send(scp_sftp_filehandle)); | |
1565 | rreq = sftp_find_request(pktin = sftp_recv()); | |
1566 | assert(rreq == req); | |
1567 | fxp_close_recv(pktin, rreq); | |
1568 | return 0; | |
1569 | } else { | |
1570 | back->send(backhandle, "", 1); | |
1571 | return response(); | |
1572 | } | |
1573 | } | |
1574 | ||
1575 | /* ---------------------------------------------------------------------- | |
1576 | * Send an error message to the other side and to the screen. | |
1577 | * Increment error counter. | |
1578 | */ | |
1579 | static void run_err(const char *fmt, ...) | |
1580 | { | |
1581 | char *str, *str2; | |
1582 | va_list ap; | |
1583 | va_start(ap, fmt); | |
1584 | errs++; | |
1585 | str = dupvprintf(fmt, ap); | |
1586 | str2 = dupcat("scp: ", str, "\n", NULL); | |
1587 | sfree(str); | |
1588 | scp_send_errmsg(str2); | |
1589 | tell_user(stderr, "%s", str2); | |
1590 | va_end(ap); | |
1591 | sfree(str2); | |
1592 | } | |
1593 | ||
1594 | /* | |
1595 | * Execute the source part of the SCP protocol. | |
1596 | */ | |
1597 | static void source(char *src) | |
1598 | { | |
1599 | uint64 size; | |
1600 | unsigned long mtime, atime; | |
1601 | char *last; | |
1602 | RFile *f; | |
1603 | int attr; | |
1604 | uint64 i; | |
1605 | uint64 stat_bytes; | |
1606 | time_t stat_starttime, stat_lasttime; | |
1607 | ||
1608 | attr = file_type(src); | |
1609 | if (attr == FILE_TYPE_NONEXISTENT || | |
1610 | attr == FILE_TYPE_WEIRD) { | |
1611 | run_err("%s: %s file or directory", src, | |
1612 | (attr == FILE_TYPE_WEIRD ? "Not a" : "No such")); | |
1613 | return; | |
1614 | } | |
1615 | ||
1616 | if (attr == FILE_TYPE_DIRECTORY) { | |
1617 | if (recursive) { | |
1618 | /* | |
1619 | * Avoid . and .. directories. | |
1620 | */ | |
1621 | char *p; | |
1622 | p = strrchr(src, '/'); | |
1623 | if (!p) | |
1624 | p = strrchr(src, '\\'); | |
1625 | if (!p) | |
1626 | p = src; | |
1627 | else | |
1628 | p++; | |
1629 | if (!strcmp(p, ".") || !strcmp(p, "..")) | |
1630 | /* skip . and .. */ ; | |
1631 | else | |
1632 | rsource(src); | |
1633 | } else { | |
1634 | run_err("%s: not a regular file", src); | |
1635 | } | |
1636 | return; | |
1637 | } | |
1638 | ||
1639 | if ((last = strrchr(src, '/')) == NULL) | |
1640 | last = src; | |
1641 | else | |
1642 | last++; | |
1643 | if (strrchr(last, '\\') != NULL) | |
1644 | last = strrchr(last, '\\') + 1; | |
1645 | if (last == src && strchr(src, ':') != NULL) | |
1646 | last = strchr(src, ':') + 1; | |
1647 | ||
1648 | f = open_existing_file(src, &size, &mtime, &atime); | |
1649 | if (f == NULL) { | |
1650 | run_err("%s: Cannot open file", src); | |
1651 | return; | |
1652 | } | |
1653 | if (preserve) { | |
1654 | if (scp_send_filetimes(mtime, atime)) | |
1655 | return; | |
1656 | } | |
1657 | ||
1658 | if (verbose) { | |
1659 | char sizestr[40]; | |
1660 | uint64_decimal(size, sizestr); | |
1661 | tell_user(stderr, "Sending file %s, size=%s", last, sizestr); | |
1662 | } | |
1663 | if (scp_send_filename(last, size, 0644)) | |
1664 | return; | |
1665 | ||
1666 | stat_bytes = uint64_make(0,0); | |
1667 | stat_starttime = time(NULL); | |
1668 | stat_lasttime = 0; | |
1669 | ||
1670 | for (i = uint64_make(0,0); | |
1671 | uint64_compare(i,size) < 0; | |
1672 | i = uint64_add32(i,4096)) { | |
1673 | char transbuf[4096]; | |
1674 | int j, k = 4096; | |
1675 | ||
1676 | if (uint64_compare(uint64_add32(i, k),size) > 0) /* i + k > size */ | |
1677 | k = (uint64_subtract(size, i)).lo; /* k = size - i; */ | |
1678 | if ((j = read_from_file(f, transbuf, k)) != k) { | |
1679 | if (statistics) | |
1680 | printf("\n"); | |
1681 | bump("%s: Read error", src); | |
1682 | } | |
1683 | if (scp_send_filedata(transbuf, k)) | |
1684 | bump("%s: Network error occurred", src); | |
1685 | ||
1686 | if (statistics) { | |
1687 | stat_bytes = uint64_add32(stat_bytes, k); | |
1688 | if (time(NULL) != stat_lasttime || | |
1689 | (uint64_compare(uint64_add32(i, k), size) == 0)) { | |
1690 | stat_lasttime = time(NULL); | |
1691 | print_stats(last, size, stat_bytes, | |
1692 | stat_starttime, stat_lasttime); | |
1693 | } | |
1694 | } | |
1695 | ||
1696 | } | |
1697 | close_rfile(f); | |
1698 | ||
1699 | (void) scp_send_finish(); | |
1700 | } | |
1701 | ||
1702 | /* | |
1703 | * Recursively send the contents of a directory. | |
1704 | */ | |
1705 | static void rsource(char *src) | |
1706 | { | |
1707 | char *last; | |
1708 | char *save_target; | |
1709 | DirHandle *dir; | |
1710 | ||
1711 | if ((last = strrchr(src, '/')) == NULL) | |
1712 | last = src; | |
1713 | else | |
1714 | last++; | |
1715 | if (strrchr(last, '\\') != NULL) | |
1716 | last = strrchr(last, '\\') + 1; | |
1717 | if (last == src && strchr(src, ':') != NULL) | |
1718 | last = strchr(src, ':') + 1; | |
1719 | ||
1720 | /* maybe send filetime */ | |
1721 | ||
1722 | save_target = scp_save_remotepath(); | |
1723 | ||
1724 | if (verbose) | |
1725 | tell_user(stderr, "Entering directory: %s", last); | |
1726 | if (scp_send_dirname(last, 0755)) | |
1727 | return; | |
1728 | ||
1729 | dir = open_directory(src); | |
1730 | if (dir != NULL) { | |
1731 | char *filename; | |
1732 | while ((filename = read_filename(dir)) != NULL) { | |
1733 | char *foundfile = dupcat(src, "/", filename, NULL); | |
1734 | source(foundfile); | |
1735 | sfree(foundfile); | |
1736 | sfree(filename); | |
1737 | } | |
1738 | } | |
1739 | close_directory(dir); | |
1740 | ||
1741 | (void) scp_send_enddir(); | |
1742 | ||
1743 | scp_restore_remotepath(save_target); | |
1744 | } | |
1745 | ||
1746 | /* | |
1747 | * Execute the sink part of the SCP protocol. | |
1748 | */ | |
1749 | static void sink(char *targ, char *src) | |
1750 | { | |
1751 | char *destfname; | |
1752 | int targisdir = 0; | |
1753 | int exists; | |
1754 | int attr; | |
1755 | WFile *f; | |
1756 | uint64 received; | |
1757 | int wrerror = 0; | |
1758 | uint64 stat_bytes; | |
1759 | time_t stat_starttime, stat_lasttime; | |
1760 | char *stat_name; | |
1761 | ||
1762 | attr = file_type(targ); | |
1763 | if (attr == FILE_TYPE_DIRECTORY) | |
1764 | targisdir = 1; | |
1765 | ||
1766 | if (targetshouldbedirectory && !targisdir) | |
1767 | bump("%s: Not a directory", targ); | |
1768 | ||
1769 | scp_sink_init(); | |
1770 | while (1) { | |
1771 | struct scp_sink_action act; | |
1772 | if (scp_get_sink_action(&act)) | |
1773 | return; | |
1774 | ||
1775 | if (act.action == SCP_SINK_ENDDIR) | |
1776 | return; | |
1777 | ||
1778 | if (act.action == SCP_SINK_RETRY) | |
1779 | continue; | |
1780 | ||
1781 | if (targisdir) { | |
1782 | /* | |
1783 | * Prevent the remote side from maliciously writing to | |
1784 | * files outside the target area by sending a filename | |
1785 | * containing `../'. In fact, it shouldn't be sending | |
1786 | * filenames with any slashes or colons in at all; so | |
1787 | * we'll find the last slash, backslash or colon in the | |
1788 | * filename and use only the part after that. (And | |
1789 | * warn!) | |
1790 | * | |
1791 | * In addition, we also ensure here that if we're | |
1792 | * copying a single file and the target is a directory | |
1793 | * (common usage: `pscp host:filename .') the remote | |
1794 | * can't send us a _different_ file name. We can | |
1795 | * distinguish this case because `src' will be non-NULL | |
1796 | * and the last component of that will fail to match | |
1797 | * (the last component of) the name sent. | |
1798 | * | |
1799 | * Well, not always; if `src' is a wildcard, we do | |
1800 | * expect to get back filenames that don't correspond | |
1801 | * exactly to it. Ideally in this case, we would like | |
1802 | * to ensure that the returned filename actually | |
1803 | * matches the wildcard pattern - but one of SCP's | |
1804 | * protocol infelicities is that wildcard matching is | |
1805 | * done at the server end _by the server's rules_ and | |
1806 | * so in general this is infeasible. Hence, we only | |
1807 | * accept filenames that don't correspond to `src' if | |
1808 | * unsafe mode is enabled or we are using SFTP (which | |
1809 | * resolves remote wildcards on the client side and can | |
1810 | * be trusted). | |
1811 | */ | |
1812 | char *striptarget, *stripsrc; | |
1813 | ||
1814 | striptarget = stripslashes(act.name, 1); | |
1815 | if (striptarget != act.name) { | |
1816 | tell_user(stderr, "warning: remote host sent a compound" | |
1817 | " pathname '%s'", act.name); | |
1818 | tell_user(stderr, " renaming local file to '%s'", | |
1819 | striptarget); | |
1820 | } | |
1821 | ||
1822 | /* | |
1823 | * Also check to see if the target filename is '.' or | |
1824 | * '..', or indeed '...' and so on because Windows | |
1825 | * appears to interpret those like '..'. | |
1826 | */ | |
1827 | if (is_dots(striptarget)) { | |
1828 | bump("security violation: remote host attempted to write to" | |
1829 | " a '.' or '..' path!"); | |
1830 | } | |
1831 | ||
1832 | if (src) { | |
1833 | stripsrc = stripslashes(src, 1); | |
1834 | if (strcmp(striptarget, stripsrc) && | |
1835 | !using_sftp && !scp_unsafe_mode) { | |
1836 | tell_user(stderr, "warning: remote host tried to write " | |
1837 | "to a file called '%s'", striptarget); | |
1838 | tell_user(stderr, " when we requested a file " | |
1839 | "called '%s'.", stripsrc); | |
1840 | tell_user(stderr, " If this is a wildcard, " | |
1841 | "consider upgrading to SSH-2 or using"); | |
1842 | tell_user(stderr, " the '-unsafe' option. Renaming" | |
1843 | " of this file has been disallowed."); | |
1844 | /* Override the name the server provided with our own. */ | |
1845 | striptarget = stripsrc; | |
1846 | } | |
1847 | } | |
1848 | ||
1849 | if (targ[0] != '\0') | |
1850 | destfname = dir_file_cat(targ, striptarget); | |
1851 | else | |
1852 | destfname = dupstr(striptarget); | |
1853 | } else { | |
1854 | /* | |
1855 | * In this branch of the if, the target area is a | |
1856 | * single file with an explicitly specified name in any | |
1857 | * case, so there's no danger. | |
1858 | */ | |
1859 | destfname = dupstr(targ); | |
1860 | } | |
1861 | attr = file_type(destfname); | |
1862 | exists = (attr != FILE_TYPE_NONEXISTENT); | |
1863 | ||
1864 | if (act.action == SCP_SINK_DIR) { | |
1865 | if (exists && attr != FILE_TYPE_DIRECTORY) { | |
1866 | run_err("%s: Not a directory", destfname); | |
1867 | continue; | |
1868 | } | |
1869 | if (!exists) { | |
1870 | if (!create_directory(destfname)) { | |
1871 | run_err("%s: Cannot create directory", destfname); | |
1872 | continue; | |
1873 | } | |
1874 | } | |
1875 | sink(destfname, NULL); | |
1876 | /* can we set the timestamp for directories ? */ | |
1877 | continue; | |
1878 | } | |
1879 | ||
1880 | f = open_new_file(destfname); | |
1881 | if (f == NULL) { | |
1882 | run_err("%s: Cannot create file", destfname); | |
1883 | continue; | |
1884 | } | |
1885 | ||
1886 | if (scp_accept_filexfer()) | |
1887 | return; | |
1888 | ||
1889 | stat_bytes = uint64_make(0, 0); | |
1890 | stat_starttime = time(NULL); | |
1891 | stat_lasttime = 0; | |
1892 | stat_name = stripslashes(destfname, 1); | |
1893 | ||
1894 | received = uint64_make(0, 0); | |
1895 | while (uint64_compare(received,act.size) < 0) { | |
1896 | char transbuf[32768]; | |
1897 | uint64 blksize; | |
1898 | int read; | |
1899 | blksize = uint64_make(0, 32768); | |
1900 | if (uint64_compare(blksize,uint64_subtract(act.size,received)) > 0) | |
1901 | blksize = uint64_subtract(act.size,received); | |
1902 | read = scp_recv_filedata(transbuf, (int)blksize.lo); | |
1903 | if (read <= 0) | |
1904 | bump("Lost connection"); | |
1905 | if (wrerror) | |
1906 | continue; | |
1907 | if (write_to_file(f, transbuf, read) != (int)read) { | |
1908 | wrerror = 1; | |
1909 | /* FIXME: in sftp we can actually abort the transfer */ | |
1910 | if (statistics) | |
1911 | printf("\r%-25.25s | %50s\n", | |
1912 | stat_name, | |
1913 | "Write error.. waiting for end of file"); | |
1914 | continue; | |
1915 | } | |
1916 | if (statistics) { | |
1917 | stat_bytes = uint64_add32(stat_bytes,read); | |
1918 | if (time(NULL) > stat_lasttime || | |
1919 | uint64_compare(uint64_add32(received, read), act.size) == 0) { | |
1920 | stat_lasttime = time(NULL); | |
1921 | print_stats(stat_name, act.size, stat_bytes, | |
1922 | stat_starttime, stat_lasttime); | |
1923 | } | |
1924 | } | |
1925 | received = uint64_add32(received, read); | |
1926 | } | |
1927 | if (act.settime) { | |
1928 | set_file_times(f, act.mtime, act.atime); | |
1929 | } | |
1930 | ||
1931 | close_wfile(f); | |
1932 | if (wrerror) { | |
1933 | run_err("%s: Write error", destfname); | |
1934 | continue; | |
1935 | } | |
1936 | (void) scp_finish_filerecv(); | |
1937 | sfree(destfname); | |
1938 | sfree(act.buf); | |
1939 | } | |
1940 | } | |
1941 | ||
1942 | /* | |
1943 | * We will copy local files to a remote server. | |
1944 | */ | |
1945 | static void toremote(int argc, char *argv[]) | |
1946 | { | |
1947 | char *src, *targ, *host, *user; | |
1948 | char *cmd; | |
1949 | int i, wc_type; | |
1950 | ||
1951 | targ = argv[argc - 1]; | |
1952 | ||
1953 | /* Separate host from filename */ | |
1954 | host = targ; | |
1955 | targ = colon(targ); | |
1956 | if (targ == NULL) | |
1957 | bump("targ == NULL in toremote()"); | |
1958 | *targ++ = '\0'; | |
1959 | if (*targ == '\0') | |
1960 | targ = "."; | |
1961 | /* Substitute "." for empty target */ | |
1962 | ||
1963 | /* Separate host and username */ | |
1964 | user = host; | |
1965 | host = strrchr(host, '@'); | |
1966 | if (host == NULL) { | |
1967 | host = user; | |
1968 | user = NULL; | |
1969 | } else { | |
1970 | *host++ = '\0'; | |
1971 | if (*user == '\0') | |
1972 | user = NULL; | |
1973 | } | |
1974 | ||
1975 | if (argc == 2) { | |
1976 | if (colon(argv[0]) != NULL) | |
1977 | bump("%s: Remote to remote not supported", argv[0]); | |
1978 | ||
1979 | wc_type = test_wildcard(argv[0], 1); | |
1980 | if (wc_type == WCTYPE_NONEXISTENT) | |
1981 | bump("%s: No such file or directory\n", argv[0]); | |
1982 | else if (wc_type == WCTYPE_WILDCARD) | |
1983 | targetshouldbedirectory = 1; | |
1984 | } | |
1985 | ||
1986 | cmd = dupprintf("scp%s%s%s%s -t %s", | |
1987 | verbose ? " -v" : "", | |
1988 | recursive ? " -r" : "", | |
1989 | preserve ? " -p" : "", | |
1990 | targetshouldbedirectory ? " -d" : "", targ); | |
1991 | do_cmd(host, user, cmd); | |
1992 | sfree(cmd); | |
1993 | ||
1994 | if (scp_source_setup(targ, targetshouldbedirectory)) | |
1995 | return; | |
1996 | ||
1997 | for (i = 0; i < argc - 1; i++) { | |
1998 | src = argv[i]; | |
1999 | if (colon(src) != NULL) { | |
2000 | tell_user(stderr, "%s: Remote to remote not supported\n", src); | |
2001 | errs++; | |
2002 | continue; | |
2003 | } | |
2004 | ||
2005 | wc_type = test_wildcard(src, 1); | |
2006 | if (wc_type == WCTYPE_NONEXISTENT) { | |
2007 | run_err("%s: No such file or directory", src); | |
2008 | continue; | |
2009 | } else if (wc_type == WCTYPE_FILENAME) { | |
2010 | source(src); | |
2011 | continue; | |
2012 | } else { | |
2013 | WildcardMatcher *wc; | |
2014 | char *filename; | |
2015 | ||
2016 | wc = begin_wildcard_matching(src); | |
2017 | if (wc == NULL) { | |
2018 | run_err("%s: No such file or directory", src); | |
2019 | continue; | |
2020 | } | |
2021 | ||
2022 | while ((filename = wildcard_get_filename(wc)) != NULL) { | |
2023 | source(filename); | |
2024 | sfree(filename); | |
2025 | } | |
2026 | ||
2027 | finish_wildcard_matching(wc); | |
2028 | } | |
2029 | } | |
2030 | } | |
2031 | ||
2032 | /* | |
2033 | * We will copy files from a remote server to the local machine. | |
2034 | */ | |
2035 | static void tolocal(int argc, char *argv[]) | |
2036 | { | |
2037 | char *src, *targ, *host, *user; | |
2038 | char *cmd; | |
2039 | ||
2040 | if (argc != 2) | |
2041 | bump("More than one remote source not supported"); | |
2042 | ||
2043 | src = argv[0]; | |
2044 | targ = argv[1]; | |
2045 | ||
2046 | /* Separate host from filename */ | |
2047 | host = src; | |
2048 | src = colon(src); | |
2049 | if (src == NULL) | |
2050 | bump("Local to local copy not supported"); | |
2051 | *src++ = '\0'; | |
2052 | if (*src == '\0') | |
2053 | src = "."; | |
2054 | /* Substitute "." for empty filename */ | |
2055 | ||
2056 | /* Separate username and hostname */ | |
2057 | user = host; | |
2058 | host = strrchr(host, '@'); | |
2059 | if (host == NULL) { | |
2060 | host = user; | |
2061 | user = NULL; | |
2062 | } else { | |
2063 | *host++ = '\0'; | |
2064 | if (*user == '\0') | |
2065 | user = NULL; | |
2066 | } | |
2067 | ||
2068 | cmd = dupprintf("scp%s%s%s%s -f %s", | |
2069 | verbose ? " -v" : "", | |
2070 | recursive ? " -r" : "", | |
2071 | preserve ? " -p" : "", | |
2072 | targetshouldbedirectory ? " -d" : "", src); | |
2073 | do_cmd(host, user, cmd); | |
2074 | sfree(cmd); | |
2075 | ||
2076 | if (scp_sink_setup(src, preserve, recursive)) | |
2077 | return; | |
2078 | ||
2079 | sink(targ, src); | |
2080 | } | |
2081 | ||
2082 | /* | |
2083 | * We will issue a list command to get a remote directory. | |
2084 | */ | |
2085 | static void get_dir_list(int argc, char *argv[]) | |
2086 | { | |
2087 | char *src, *host, *user; | |
2088 | char *cmd, *p, *q; | |
2089 | char c; | |
2090 | ||
2091 | src = argv[0]; | |
2092 | ||
2093 | /* Separate host from filename */ | |
2094 | host = src; | |
2095 | src = colon(src); | |
2096 | if (src == NULL) | |
2097 | bump("Local file listing not supported"); | |
2098 | *src++ = '\0'; | |
2099 | if (*src == '\0') | |
2100 | src = "."; | |
2101 | /* Substitute "." for empty filename */ | |
2102 | ||
2103 | /* Separate username and hostname */ | |
2104 | user = host; | |
2105 | host = strrchr(host, '@'); | |
2106 | if (host == NULL) { | |
2107 | host = user; | |
2108 | user = NULL; | |
2109 | } else { | |
2110 | *host++ = '\0'; | |
2111 | if (*user == '\0') | |
2112 | user = NULL; | |
2113 | } | |
2114 | ||
2115 | cmd = snewn(4 * strlen(src) + 100, char); | |
2116 | strcpy(cmd, "ls -la '"); | |
2117 | p = cmd + strlen(cmd); | |
2118 | for (q = src; *q; q++) { | |
2119 | if (*q == '\'') { | |
2120 | *p++ = '\''; | |
2121 | *p++ = '\\'; | |
2122 | *p++ = '\''; | |
2123 | *p++ = '\''; | |
2124 | } else { | |
2125 | *p++ = *q; | |
2126 | } | |
2127 | } | |
2128 | *p++ = '\''; | |
2129 | *p = '\0'; | |
2130 | ||
2131 | do_cmd(host, user, cmd); | |
2132 | sfree(cmd); | |
2133 | ||
2134 | if (using_sftp) { | |
2135 | scp_sftp_listdir(src); | |
2136 | } else { | |
2137 | while (ssh_scp_recv((unsigned char *) &c, 1) > 0) | |
2138 | tell_char(stdout, c); | |
2139 | } | |
2140 | } | |
2141 | ||
2142 | /* | |
2143 | * Short description of parameters. | |
2144 | */ | |
2145 | static void usage(void) | |
2146 | { | |
2147 | printf("PuTTY Secure Copy client\n"); | |
2148 | printf("%s\n", ver); | |
2149 | printf("Usage: pscp [options] [user@]host:source target\n"); | |
2150 | printf | |
2151 | (" pscp [options] source [source...] [user@]host:target\n"); | |
2152 | printf(" pscp [options] -ls [user@]host:filespec\n"); | |
2153 | printf("Options:\n"); | |
2154 | printf(" -V print version information and exit\n"); | |
2155 | printf(" -pgpfp print PGP key fingerprints and exit\n"); | |
2156 | printf(" -p preserve file attributes\n"); | |
2157 | printf(" -q quiet, don't show statistics\n"); | |
2158 | printf(" -r copy directories recursively\n"); | |
2159 | printf(" -v show verbose messages\n"); | |
2160 | printf(" -load sessname Load settings from saved session\n"); | |
2161 | printf(" -P port connect to specified port\n"); | |
2162 | printf(" -l user connect with specified username\n"); | |
2163 | printf(" -pw passw login with specified password\n"); | |
2164 | printf(" -1 -2 force use of particular SSH protocol version\n"); | |
2165 | printf(" -4 -6 force use of IPv4 or IPv6\n"); | |
2166 | printf(" -C enable compression\n"); | |
2167 | printf(" -i key private key file for authentication\n"); | |
2168 | printf(" -noagent disable use of Pageant\n"); | |
2169 | printf(" -agent enable use of Pageant\n"); | |
2170 | printf(" -batch disable all interactive prompts\n"); | |
2171 | printf(" -unsafe allow server-side wildcards (DANGEROUS)\n"); | |
2172 | printf(" -sftp force use of SFTP protocol\n"); | |
2173 | printf(" -scp force use of SCP protocol\n"); | |
2174 | #if 0 | |
2175 | /* | |
2176 | * -gui is an internal option, used by GUI front ends to get | |
2177 | * pscp to pass progress reports back to them. It's not an | |
2178 | * ordinary user-accessible option, so it shouldn't be part of | |
2179 | * the command-line help. The only people who need to know | |
2180 | * about it are programmers, and they can read the source. | |
2181 | */ | |
2182 | printf | |
2183 | (" -gui hWnd GUI mode with the windows handle for receiving messages\n"); | |
2184 | #endif | |
2185 | cleanup_exit(1); | |
2186 | } | |
2187 | ||
2188 | void version(void) | |
2189 | { | |
2190 | printf("pscp: %s\n", ver); | |
2191 | cleanup_exit(1); | |
2192 | } | |
2193 | ||
2194 | void cmdline_error(char *p, ...) | |
2195 | { | |
2196 | va_list ap; | |
2197 | fprintf(stderr, "pscp: "); | |
2198 | va_start(ap, p); | |
2199 | vfprintf(stderr, p, ap); | |
2200 | va_end(ap); | |
2201 | fprintf(stderr, "\n try typing just \"pscp\" for help\n"); | |
2202 | exit(1); | |
2203 | } | |
2204 | ||
2205 | /* | |
2206 | * Main program. (Called `psftp_main' because it gets called from | |
2207 | * *sftp.c; bit silly, I know, but it had to be called _something_.) | |
2208 | */ | |
2209 | int psftp_main(int argc, char *argv[]) | |
2210 | { | |
2211 | int i; | |
2212 | ||
2213 | default_protocol = PROT_TELNET; | |
2214 | ||
2215 | flags = FLAG_STDERR | |
2216 | #ifdef FLAG_SYNCAGENT | |
2217 | | FLAG_SYNCAGENT | |
2218 | #endif | |
2219 | ; | |
2220 | cmdline_tooltype = TOOLTYPE_FILETRANSFER; | |
2221 | sk_init(); | |
2222 | ||
2223 | /* Load Default Settings before doing anything else. */ | |
2224 | do_defaults(NULL, &cfg); | |
2225 | loaded_session = FALSE; | |
2226 | ||
2227 | for (i = 1; i < argc; i++) { | |
2228 | int ret; | |
2229 | if (argv[i][0] != '-') | |
2230 | break; | |
2231 | ret = cmdline_process_param(argv[i], i+1<argc?argv[i+1]:NULL, 1, &cfg); | |
2232 | if (ret == -2) { | |
2233 | cmdline_error("option \"%s\" requires an argument", argv[i]); | |
2234 | } else if (ret == 2) { | |
2235 | i++; /* skip next argument */ | |
2236 | } else if (ret == 1) { | |
2237 | /* We have our own verbosity in addition to `flags'. */ | |
2238 | if (flags & FLAG_VERBOSE) | |
2239 | verbose = 1; | |
2240 | } else if (strcmp(argv[i], "-pgpfp") == 0) { | |
2241 | pgp_fingerprints(); | |
2242 | return 1; | |
2243 | } else if (strcmp(argv[i], "-r") == 0) { | |
2244 | recursive = 1; | |
2245 | } else if (strcmp(argv[i], "-p") == 0) { | |
2246 | preserve = 1; | |
2247 | } else if (strcmp(argv[i], "-q") == 0) { | |
2248 | statistics = 0; | |
2249 | } else if (strcmp(argv[i], "-h") == 0 || strcmp(argv[i], "-?") == 0) { | |
2250 | usage(); | |
2251 | } else if (strcmp(argv[i], "-V") == 0) { | |
2252 | version(); | |
2253 | } else if (strcmp(argv[i], "-ls") == 0) { | |
2254 | list = 1; | |
2255 | } else if (strcmp(argv[i], "-batch") == 0) { | |
2256 | console_batch_mode = 1; | |
2257 | } else if (strcmp(argv[i], "-unsafe") == 0) { | |
2258 | scp_unsafe_mode = 1; | |
2259 | } else if (strcmp(argv[i], "-sftp") == 0) { | |
2260 | try_scp = 0; try_sftp = 1; | |
2261 | } else if (strcmp(argv[i], "-scp") == 0) { | |
2262 | try_scp = 1; try_sftp = 0; | |
2263 | } else if (strcmp(argv[i], "--") == 0) { | |
2264 | i++; | |
2265 | break; | |
2266 | } else { | |
2267 | cmdline_error("unknown option \"%s\"", argv[i]); | |
2268 | } | |
2269 | } | |
2270 | argc -= i; | |
2271 | argv += i; | |
2272 | back = NULL; | |
2273 | ||
2274 | if (list) { | |
2275 | if (argc != 1) | |
2276 | usage(); | |
2277 | get_dir_list(argc, argv); | |
2278 | ||
2279 | } else { | |
2280 | ||
2281 | if (argc < 2) | |
2282 | usage(); | |
2283 | if (argc > 2) | |
2284 | targetshouldbedirectory = 1; | |
2285 | ||
2286 | if (colon(argv[argc - 1]) != NULL) | |
2287 | toremote(argc, argv); | |
2288 | else | |
2289 | tolocal(argc, argv); | |
2290 | } | |
2291 | ||
2292 | if (back != NULL && back->connected(backhandle)) { | |
2293 | char ch; | |
2294 | back->special(backhandle, TS_EOF); | |
2295 | ssh_scp_recv((unsigned char *) &ch, 1); | |
2296 | } | |
2297 | random_save_seed(); | |
2298 | ||
2299 | cmdline_cleanup(); | |
2300 | console_provide_logctx(NULL); | |
2301 | back->free(backhandle); | |
2302 | backhandle = NULL; | |
2303 | back = NULL; | |
2304 | sk_cleanup(); | |
2305 | return (errs == 0 ? 0 : 1); | |
2306 | } | |
2307 | ||
2308 | /* end */ |