forked from github/putty
-
Notifications
You must be signed in to change notification settings - Fork 0
/
pscp.c
2360 lines (2115 loc) · 71 KB
/
pscp.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
* scp.c - Scp (Secure Copy) client for PuTTY.
* Joris van Rantwijk, Simon Tatham
*
* This is mainly based on ssh-1.2.26/scp.c by Timo Rinne & Tatu Ylonen.
* They, in turn, used stuff from BSD rcp.
*
* (SGT, 2001-09-10: Joris van Rantwijk assures me that although
* this file as originally submitted was inspired by, and
* _structurally_ based on, ssh-1.2.26's scp.c, there wasn't any
* actual code duplicated, so the above comment shouldn't give rise
* to licensing issues.)
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <limits.h>
#include <time.h>
#include <assert.h>
#include "putty.h"
#include "psftp.h"
#include "ssh.h"
#include "sftp.h"
#include "storage.h"
static bool list = false;
static bool verbose = false;
static bool recursive = false;
static bool preserve = false;
static bool targetshouldbedirectory = false;
static bool statistics = true;
static int prev_stats_len = 0;
static bool scp_unsafe_mode = false;
static int errs = 0;
static bool try_scp = true;
static bool try_sftp = true;
static bool main_cmd_is_sftp = false;
static bool fallback_cmd_is_sftp = false;
static bool using_sftp = false;
static bool uploading = false;
static Backend *backend;
static Conf *conf;
static bool sent_eof = false;
static void source(const char *src);
static void rsource(const char *src);
static void sink(const char *targ, const char *src);
const char *const appname = "PSCP";
/*
* The maximum amount of queued data we accept before we stop and
* wait for the server to process some.
*/
#define MAX_SCP_BUFSIZE 16384
void ldisc_echoedit_update(Ldisc *ldisc) { }
static size_t pscp_output(Seat *, bool is_stderr, const void *, size_t);
static bool pscp_eof(Seat *);
static const SeatVtable pscp_seat_vt = {
.output = pscp_output,
.eof = pscp_eof,
.get_userpass_input = filexfer_get_userpass_input,
.notify_remote_exit = nullseat_notify_remote_exit,
.connection_fatal = console_connection_fatal,
.update_specials_menu = nullseat_update_specials_menu,
.get_ttymode = nullseat_get_ttymode,
.set_busy_status = nullseat_set_busy_status,
.verify_ssh_host_key = console_verify_ssh_host_key,
.confirm_weak_crypto_primitive = console_confirm_weak_crypto_primitive,
.confirm_weak_cached_hostkey = console_confirm_weak_cached_hostkey,
.is_utf8 = nullseat_is_never_utf8,
.echoedit_update = nullseat_echoedit_update,
.get_x_display = nullseat_get_x_display,
.get_windowid = nullseat_get_windowid,
.get_window_pixel_size = nullseat_get_window_pixel_size,
.stripctrl_new = console_stripctrl_new,
.set_trust_status = nullseat_set_trust_status_vacuously,
.verbose = cmdline_seat_verbose,
.interactive = nullseat_interactive_no,
.get_cursor_position = nullseat_get_cursor_position,
};
static Seat pscp_seat[1] = {{ &pscp_seat_vt }};
static void tell_char(FILE *stream, char c)
{
fputc(c, stream);
}
static void tell_str(FILE *stream, const char *str)
{
unsigned int i;
for (i = 0; i < strlen(str); ++i)
tell_char(stream, str[i]);
}
static void abandon_stats(void)
{
/*
* Output a \n to stdout (which is where we've been sending
* transfer statistics) so that the cursor will move to the next
* line. We should do this before displaying any other kind of
* output like an error message.
*/
if (prev_stats_len) {
putchar('\n');
fflush(stdout);
prev_stats_len = 0;
}
}
static PRINTF_LIKE(2, 3) void tell_user(FILE *stream, const char *fmt, ...)
{
char *str, *str2;
va_list ap;
va_start(ap, fmt);
str = dupvprintf(fmt, ap);
va_end(ap);
str2 = dupcat(str, "\n");
sfree(str);
abandon_stats();
tell_str(stream, str2);
sfree(str2);
}
/*
* Receive a block of data from the SSH link. Block until all data
* is available.
*
* To do this, we repeatedly call the SSH protocol module, with our
* own pscp_output() function to catch the data that comes back. We do
* this until we have enough data.
*/
static bufchain received_data;
static BinarySink *stderr_bs;
static size_t pscp_output(
Seat *seat, bool is_stderr, const void *data, size_t len)
{
/*
* stderr data is just spouted to local stderr (optionally via a
* sanitiser) and otherwise ignored.
*/
if (is_stderr) {
put_data(stderr_bs, data, len);
return 0;
}
bufchain_add(&received_data, data, len);
return 0;
}
static bool pscp_eof(Seat *seat)
{
/*
* We usually expect to be the party deciding when to close the
* connection, so if we see EOF before we sent it ourselves, we
* should panic. The exception is if we're using old-style scp and
* downloading rather than uploading.
*/
if ((using_sftp || uploading) && !sent_eof) {
seat_connection_fatal(
pscp_seat, "Received unexpected end-of-file from server");
}
return false;
}
static bool ssh_scp_recv(void *vbuf, size_t len)
{
char *buf = (char *)vbuf;
while (len > 0) {
while (bufchain_size(&received_data) == 0) {
if (backend_exitcode(backend) >= 0 ||
ssh_sftp_loop_iteration() < 0)
return false; /* doom */
}
size_t got = bufchain_fetch_consume_up_to(&received_data, buf, len);
buf += got;
len -= got;
}
return true;
}
/*
* Loop through the ssh connection and authentication process.
*/
static void ssh_scp_init(void)
{
while (!backend_sendok(backend)) {
if (backend_exitcode(backend) >= 0) {
errs++;
return;
}
if (ssh_sftp_loop_iteration() < 0) {
errs++;
return; /* doom */
}
}
/* Work out which backend we ended up using. */
if (!ssh_fallback_cmd(backend))
using_sftp = main_cmd_is_sftp;
else
using_sftp = fallback_cmd_is_sftp;
if (verbose) {
if (using_sftp)
tell_user(stderr, "Using SFTP");
else
tell_user(stderr, "Using SCP1");
}
}
/*
* Print an error message and exit after closing the SSH link.
*/
static NORETURN PRINTF_LIKE(1, 2) void bump(const char *fmt, ...)
{
char *str, *str2;
va_list ap;
va_start(ap, fmt);
str = dupvprintf(fmt, ap);
va_end(ap);
str2 = dupcat(str, "\n");
sfree(str);
abandon_stats();
tell_str(stderr, str2);
sfree(str2);
errs++;
if (backend && backend_connected(backend)) {
char ch;
backend_special(backend, SS_EOF, 0);
sent_eof = true;
ssh_scp_recv(&ch, 1);
}
cleanup_exit(1);
}
/*
* A nasty loop macro that lets me get an escape-sequence sanitised
* version of a string for display, and free it automatically
* afterwards.
*/
static StripCtrlChars *string_scc;
#define with_stripctrl(varname, input) \
for (char *varname = stripctrl_string(string_scc, input); varname; \
sfree(varname), varname = NULL)
/*
* Wait for the reply to a single SFTP request. Parallels the same
* function in psftp.c (but isn't centralised into sftp.c because the
* latter module handles SFTP only and shouldn't assume that SFTP is
* the only thing going on by calling seat_connection_fatal).
*/
struct sftp_packet *sftp_wait_for_reply(struct sftp_request *req)
{
struct sftp_packet *pktin;
struct sftp_request *rreq;
sftp_register(req);
pktin = sftp_recv();
if (pktin == NULL) {
seat_connection_fatal(
pscp_seat, "did not receive SFTP response packet from server");
}
rreq = sftp_find_request(pktin);
if (rreq != req) {
seat_connection_fatal(
pscp_seat,
"unable to understand SFTP response packet from server: %s",
fxp_error());
}
return pktin;
}
/*
* Open an SSH connection to user@host and execute cmd.
*/
static void do_cmd(char *host, char *user, char *cmd)
{
const char *err;
char *realhost;
LogContext *logctx;
if (host == NULL || host[0] == '\0')
bump("Empty host name");
/*
* Remove a colon suffix.
*/
host[host_strcspn(host, ":")] = '\0';
/*
* If we haven't loaded session details already (e.g., from -load),
* try looking for a session called "host".
*/
if (!cmdline_loaded_session()) {
/* Try to load settings for `host' into a temporary config */
Conf *conf2 = conf_new();
conf_set_str(conf2, CONF_host, "");
do_defaults(host, conf2);
if (conf_get_str(conf2, CONF_host)[0] != '\0') {
/* Settings present and include hostname */
/* Re-load data into the real config. */
do_defaults(host, conf);
} else {
/* Session doesn't exist or mention a hostname. */
/* Use `host' as a bare hostname. */
conf_set_str(conf, CONF_host, host);
}
conf_free(conf2);
} else {
/* Patch in hostname `host' to session details. */
conf_set_str(conf, CONF_host, host);
}
/*
* Force protocol to SSH if the user has somehow contrived to
* select one we don't support (e.g. by loading an inappropriate
* saved session). In that situation we assume the port number is
* useless too.)
*/
if (!backend_vt_from_proto(conf_get_int(conf, CONF_protocol))) {
conf_set_int(conf, CONF_protocol, PROT_SSH);
conf_set_int(conf, CONF_port, 22);
}
/*
* Enact command-line overrides.
*/
cmdline_run_saved(conf);
/*
* Muck about with the hostname in various ways.
*/
{
char *hostbuf = dupstr(conf_get_str(conf, CONF_host));
char *host = hostbuf;
char *p, *q;
/*
* Trim leading whitespace.
*/
host += strspn(host, " \t");
/*
* See if host is of the form user@host, and separate out
* the username if so.
*/
if (host[0] != '\0') {
char *atsign = strrchr(host, '@');
if (atsign) {
*atsign = '\0';
conf_set_str(conf, CONF_username, host);
host = atsign + 1;
}
}
/*
* Remove any remaining whitespace.
*/
p = hostbuf;
q = host;
while (*q) {
if (*q != ' ' && *q != '\t')
*p++ = *q;
q++;
}
*p = '\0';
conf_set_str(conf, CONF_host, hostbuf);
sfree(hostbuf);
}
/* Set username */
if (user != NULL && user[0] != '\0') {
conf_set_str(conf, CONF_username, user);
} else if (conf_get_str(conf, CONF_username)[0] == '\0') {
user = get_username();
if (!user)
bump("Empty user name");
else {
if (verbose)
tell_user(stderr, "Guessing user name: %s", user);
conf_set_str(conf, CONF_username, user);
sfree(user);
}
}
/*
* Force protocol to SSH if the user has somehow contrived to
* select one we don't support (e.g. by loading an inappropriate
* saved session). In that situation we assume the port number is
* useless too.)
*/
if (!backend_vt_from_proto(conf_get_int(conf, CONF_protocol))) {
conf_set_int(conf, CONF_protocol, PROT_SSH);
conf_set_int(conf, CONF_port, 22);
}
/*
* Disable scary things which shouldn't be enabled for simple
* things like SCP and SFTP: agent forwarding, port forwarding,
* X forwarding.
*/
conf_set_bool(conf, CONF_x11_forward, false);
conf_set_bool(conf, CONF_agentfwd, false);
conf_set_bool(conf, CONF_ssh_simple, true);
{
char *key;
while ((key = conf_get_str_nthstrkey(conf, CONF_portfwd, 0)) != NULL)
conf_del_str_str(conf, CONF_portfwd, key);
}
/*
* Set up main and possibly fallback command depending on
* options specified by user.
* Attempt to start the SFTP subsystem as a first choice,
* falling back to the provided scp command if that fails.
*/
conf_set_str(conf, CONF_remote_cmd2, "");
if (try_sftp) {
/* First choice is SFTP subsystem. */
main_cmd_is_sftp = true;
conf_set_str(conf, CONF_remote_cmd, "sftp");
conf_set_bool(conf, CONF_ssh_subsys, true);
if (try_scp) {
/* Fallback is to use the provided scp command. */
fallback_cmd_is_sftp = false;
conf_set_str(conf, CONF_remote_cmd2, cmd);
conf_set_bool(conf, CONF_ssh_subsys2, false);
} else {
/* Since we're not going to try SCP, we may as well try
* harder to find an SFTP server, since in the current
* implementation we have a spare slot. */
fallback_cmd_is_sftp = true;
/* see psftp.c for full explanation of this kludge */
conf_set_str(conf, CONF_remote_cmd2,
"test -x /usr/lib/sftp-server &&"
" exec /usr/lib/sftp-server\n"
"test -x /usr/local/lib/sftp-server &&"
" exec /usr/local/lib/sftp-server\n"
"exec sftp-server");
conf_set_bool(conf, CONF_ssh_subsys2, false);
}
} else {
/* Don't try SFTP at all; just try the scp command. */
main_cmd_is_sftp = false;
conf_set_str(conf, CONF_remote_cmd, cmd);
conf_set_bool(conf, CONF_ssh_subsys, false);
}
conf_set_bool(conf, CONF_nopty, true);
logctx = log_init(console_cli_logpolicy, conf);
platform_psftp_pre_conn_setup(console_cli_logpolicy);
err = backend_init(backend_vt_from_proto(
conf_get_int(conf, CONF_protocol)),
pscp_seat, &backend, logctx, conf,
conf_get_str(conf, CONF_host),
conf_get_int(conf, CONF_port),
&realhost, 0,
conf_get_bool(conf, CONF_tcp_keepalives));
if (err != NULL)
bump("ssh_init: %s", err);
ssh_scp_init();
if (verbose && realhost != NULL && errs == 0)
tell_user(stderr, "Connected to %s", realhost);
sfree(realhost);
}
/*
* Update statistic information about current file.
*/
static void print_stats(const char *name, uint64_t size, uint64_t done,
time_t start, time_t now)
{
float ratebs;
unsigned long eta;
char *etastr;
int pct;
int len;
int elap;
elap = (unsigned long) difftime(now, start);
if (now > start)
ratebs = (float)done / elap;
else
ratebs = (float)done;
if (ratebs < 1.0)
eta = size - done;
else
eta = (unsigned long)((size - done) / ratebs);
etastr = dupprintf("%02ld:%02ld:%02ld",
eta / 3600, (eta % 3600) / 60, eta % 60);
pct = (int) (100.0 * done / size);
{
/* divide by 1024 to provide kB */
len = printf("\r%-25.25s | %"PRIu64" kB | %5.1f kB/s | "
"ETA: %8s | %3d%%", name, done >> 10,
ratebs / 1024.0, etastr, pct);
if (len < prev_stats_len)
printf("%*s", prev_stats_len - len, "");
prev_stats_len = len;
if (done == size)
abandon_stats();
fflush(stdout);
}
free(etastr);
}
/*
* Find a colon in str and return a pointer to the colon.
* This is used to separate hostname from filename.
*/
static char *colon(char *str)
{
/* We ignore a leading colon, since the hostname cannot be
empty. We also ignore a colon as second character because
of filenames like f:myfile.txt. */
if (str[0] == '\0' || str[0] == ':' ||
(str[0] != '[' && str[1] == ':'))
return (NULL);
str += host_strcspn(str, ":/\\");
if (*str == ':')
return (str);
else
return (NULL);
}
/*
* Determine whether a string is entirely composed of dots.
*/
static bool is_dots(char *str)
{
return str[strspn(str, ".")] == '\0';
}
/*
* Wait for a response from the other side.
* Return 0 if ok, -1 if error.
*/
static int response(void)
{
char ch, resp, rbuf[2048];
int p;
if (!ssh_scp_recv(&resp, 1))
bump("Lost connection");
p = 0;
switch (resp) {
case 0: /* ok */
return (0);
default:
rbuf[p++] = resp;
/* fallthrough */
case 1: /* error */
case 2: /* fatal error */
do {
if (!ssh_scp_recv(&ch, 1))
bump("Protocol error: Lost connection");
rbuf[p++] = ch;
} while (p < sizeof(rbuf) && ch != '\n');
rbuf[p - 1] = '\0';
if (resp == 1)
tell_user(stderr, "%s", rbuf);
else
bump("%s", rbuf);
errs++;
return (-1);
}
}
bool sftp_recvdata(char *buf, size_t len)
{
return ssh_scp_recv(buf, len);
}
bool sftp_senddata(const char *buf, size_t len)
{
backend_send(backend, buf, len);
return true;
}
size_t sftp_sendbuffer(void)
{
return backend_sendbuffer(backend);
}
/* ----------------------------------------------------------------------
* sftp-based replacement for the hacky `pscp -ls'.
*/
void list_directory_from_sftp_warn_unsorted(void)
{
fprintf(stderr,
"Directory is too large to sort; writing file names unsorted\n");
}
void list_directory_from_sftp_print(struct fxp_name *name)
{
with_stripctrl(san, name->longname)
printf("%s\n", san);
}
void scp_sftp_listdir(const char *dirname)
{
struct fxp_handle *dirh;
struct fxp_names *names;
struct sftp_packet *pktin;
struct sftp_request *req;
if (!fxp_init()) {
tell_user(stderr, "unable to initialise SFTP: %s", fxp_error());
errs++;
return;
}
printf("Listing directory %s\n", dirname);
req = fxp_opendir_send(dirname);
pktin = sftp_wait_for_reply(req);
dirh = fxp_opendir_recv(pktin, req);
if (dirh == NULL) {
tell_user(stderr, "Unable to open %s: %s\n", dirname, fxp_error());
errs++;
} else {
struct list_directory_from_sftp_ctx *ctx =
list_directory_from_sftp_new();
while (1) {
req = fxp_readdir_send(dirh);
pktin = sftp_wait_for_reply(req);
names = fxp_readdir_recv(pktin, req);
if (names == NULL) {
if (fxp_error_type() == SSH_FX_EOF)
break;
printf("Reading directory %s: %s\n", dirname, fxp_error());
break;
}
if (names->nnames == 0) {
fxp_free_names(names);
break;
}
for (size_t i = 0; i < names->nnames; i++)
list_directory_from_sftp_feed(ctx, &names->names[i]);
fxp_free_names(names);
}
req = fxp_close_send(dirh);
pktin = sftp_wait_for_reply(req);
fxp_close_recv(pktin, req);
list_directory_from_sftp_finish(ctx);
list_directory_from_sftp_free(ctx);
}
}
/* ----------------------------------------------------------------------
* Helper routines that contain the actual SCP protocol elements,
* implemented both as SCP1 and SFTP.
*/
static struct scp_sftp_dirstack {
struct scp_sftp_dirstack *next;
struct fxp_name *names;
int namepos, namelen;
char *dirpath;
char *wildcard;
bool matched_something; /* wildcard match set was non-empty */
} *scp_sftp_dirstack_head;
static char *scp_sftp_remotepath, *scp_sftp_currentname;
static char *scp_sftp_wildcard;
static bool scp_sftp_targetisdir, scp_sftp_donethistarget;
static bool scp_sftp_preserve, scp_sftp_recursive;
static unsigned long scp_sftp_mtime, scp_sftp_atime;
static bool scp_has_times;
static struct fxp_handle *scp_sftp_filehandle;
static struct fxp_xfer *scp_sftp_xfer;
static uint64_t scp_sftp_fileoffset;
int scp_source_setup(const char *target, bool shouldbedir)
{
if (using_sftp) {
/*
* Find out whether the target filespec is in fact a
* directory.
*/
struct sftp_packet *pktin;
struct sftp_request *req;
struct fxp_attrs attrs;
bool ret;
if (!fxp_init()) {
tell_user(stderr, "unable to initialise SFTP: %s", fxp_error());
errs++;
return 1;
}
req = fxp_stat_send(target);
pktin = sftp_wait_for_reply(req);
ret = fxp_stat_recv(pktin, req, &attrs);
if (!ret || !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS))
scp_sftp_targetisdir = false;
else
scp_sftp_targetisdir = (attrs.permissions & 0040000) != 0;
if (shouldbedir && !scp_sftp_targetisdir) {
bump("pscp: remote filespec %s: not a directory\n", target);
}
scp_sftp_remotepath = dupstr(target);
scp_has_times = false;
} else {
(void) response();
}
return 0;
}
int scp_send_errmsg(char *str)
{
if (using_sftp) {
/* do nothing; we never need to send our errors to the server */
} else {
backend_send(backend, "\001", 1);/* scp protocol error prefix */
backend_send(backend, str, strlen(str));
}
return 0; /* can't fail */
}
int scp_send_filetimes(unsigned long mtime, unsigned long atime)
{
if (using_sftp) {
scp_sftp_mtime = mtime;
scp_sftp_atime = atime;
scp_has_times = true;
return 0;
} else {
char buf[80];
sprintf(buf, "T%lu 0 %lu 0\n", mtime, atime);
backend_send(backend, buf, strlen(buf));
return response();
}
}
int scp_send_filename(const char *name, uint64_t size, int permissions)
{
if (using_sftp) {
char *fullname;
struct sftp_packet *pktin;
struct sftp_request *req;
struct fxp_attrs attrs;
if (scp_sftp_targetisdir) {
fullname = dupcat(scp_sftp_remotepath, "/", name);
} else {
fullname = dupstr(scp_sftp_remotepath);
}
attrs.flags = 0;
PUT_PERMISSIONS(attrs, permissions);
req = fxp_open_send(fullname,
SSH_FXF_WRITE | SSH_FXF_CREAT | SSH_FXF_TRUNC,
&attrs);
pktin = sftp_wait_for_reply(req);
scp_sftp_filehandle = fxp_open_recv(pktin, req);
if (!scp_sftp_filehandle) {
tell_user(stderr, "pscp: unable to open %s: %s",
fullname, fxp_error());
sfree(fullname);
errs++;
return 1;
}
scp_sftp_fileoffset = 0;
scp_sftp_xfer = xfer_upload_init(scp_sftp_filehandle,
scp_sftp_fileoffset);
sfree(fullname);
return 0;
} else {
char *buf;
if (permissions < 0)
permissions = 0644;
buf = dupprintf("C%04o %"PRIu64" ", (int)(permissions & 07777), size);
backend_send(backend, buf, strlen(buf));
sfree(buf);
backend_send(backend, name, strlen(name));
backend_send(backend, "\n", 1);
return response();
}
}
int scp_send_filedata(char *data, int len)
{
if (using_sftp) {
int ret;
struct sftp_packet *pktin;
if (!scp_sftp_filehandle) {
return 1;
}
while (!xfer_upload_ready(scp_sftp_xfer)) {
if (toplevel_callback_pending()) {
/* If we have pending callbacks, they might make
* xfer_upload_ready start to return true. So we should
* run them and then re-check xfer_upload_ready, before
* we go as far as waiting for an entire packet to
* arrive. */
run_toplevel_callbacks();
continue;
}
pktin = sftp_recv();
ret = xfer_upload_gotpkt(scp_sftp_xfer, pktin);
if (ret <= 0) {
tell_user(stderr, "error while writing: %s", fxp_error());
if (ret == INT_MIN) /* pktin not even freed */
sfree(pktin);
errs++;
return 1;
}
}
xfer_upload_data(scp_sftp_xfer, data, len);
scp_sftp_fileoffset += len;
return 0;
} else {
int bufsize = backend_send(backend, data, len);
/*
* If the network transfer is backing up - that is, the
* remote site is not accepting data as fast as we can
* produce it - then we must loop on network events until
* we have space in the buffer again.
*/
while (bufsize > MAX_SCP_BUFSIZE) {
if (ssh_sftp_loop_iteration() < 0)
return 1;
bufsize = backend_sendbuffer(backend);
}
return 0;
}
}
int scp_send_finish(void)
{
if (using_sftp) {
struct fxp_attrs attrs;
struct sftp_packet *pktin;
struct sftp_request *req;
while (!xfer_done(scp_sftp_xfer)) {
pktin = sftp_recv();
int ret = xfer_upload_gotpkt(scp_sftp_xfer, pktin);
if (ret <= 0) {
tell_user(stderr, "error while writing: %s", fxp_error());
if (ret == INT_MIN) /* pktin not even freed */
sfree(pktin);
errs++;
return 1;
}
}
xfer_cleanup(scp_sftp_xfer);
if (!scp_sftp_filehandle) {
return 1;
}
if (scp_has_times) {
attrs.flags = SSH_FILEXFER_ATTR_ACMODTIME;
attrs.atime = scp_sftp_atime;
attrs.mtime = scp_sftp_mtime;
req = fxp_fsetstat_send(scp_sftp_filehandle, attrs);
pktin = sftp_wait_for_reply(req);
bool ret = fxp_fsetstat_recv(pktin, req);
if (!ret) {
tell_user(stderr, "unable to set file times: %s", fxp_error());
errs++;
}
}
req = fxp_close_send(scp_sftp_filehandle);
pktin = sftp_wait_for_reply(req);
fxp_close_recv(pktin, req);
scp_has_times = false;
return 0;
} else {
backend_send(backend, "", 1);
return response();
}
}
char *scp_save_remotepath(void)
{
if (using_sftp)
return scp_sftp_remotepath;
else
return NULL;
}
void scp_restore_remotepath(char *data)
{
if (using_sftp)
scp_sftp_remotepath = data;
}
int scp_send_dirname(const char *name, int modes)
{
if (using_sftp) {
char *fullname;
char const *err;
struct fxp_attrs attrs;
struct sftp_packet *pktin;
struct sftp_request *req;
bool ret;
if (scp_sftp_targetisdir) {
fullname = dupcat(scp_sftp_remotepath, "/", name);
} else {
fullname = dupstr(scp_sftp_remotepath);
}
/*
* We don't worry about whether we managed to create the
* directory, because if it exists already it's OK just to
* use it. Instead, we will stat it afterwards, and if it
* exists and is a directory we will assume we were either
* successful or it didn't matter.
*/
req = fxp_mkdir_send(fullname, NULL);
pktin = sftp_wait_for_reply(req);
ret = fxp_mkdir_recv(pktin, req);
if (!ret)
err = fxp_error();
else
err = "server reported no error";
req = fxp_stat_send(fullname);
pktin = sftp_wait_for_reply(req);
ret = fxp_stat_recv(pktin, req, &attrs);
if (!ret || !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS) ||
!(attrs.permissions & 0040000)) {
tell_user(stderr, "unable to create directory %s: %s",
fullname, err);
sfree(fullname);
errs++;
return 1;
}
scp_sftp_remotepath = fullname;
return 0;
} else {
char buf[40];
sprintf(buf, "D%04o 0 ", modes);
backend_send(backend, buf, strlen(buf));
backend_send(backend, name, strlen(name));
backend_send(backend, "\n", 1);
return response();
}
}
int scp_send_enddir(void)
{
if (using_sftp) {
sfree(scp_sftp_remotepath);
return 0;
} else {
backend_send(backend, "E\n", 2);
return response();
}
}
/*
* Yes, I know; I have an scp_sink_setup _and_ an scp_sink_init.
* That's bad. The difference is that scp_sink_setup is called once