2 * scp.c - Scp (Secure Copy) client for PuTTY.
3 * Joris van Rantwijk, Simon Tatham
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.
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.)
22 #define PUTTY_DO_GLOBALS
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;
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;
46 static void *backhandle
;
49 static void source(char *src
);
50 static void rsource(char *src
);
51 static void sink(char *targ
, char *src
);
54 * The maximum amount of queued data we accept before we stop and
55 * wait for the server to process some.
57 #define MAX_SCP_BUFSIZE 16384
59 void ldisc_send(void *handle
, char *buf
, int len
, int interactive
)
62 * This is only here because of the calls to ldisc_send(NULL,
63 * 0) in ssh.c. Nothing in PSCP actually needs to use the ldisc
64 * as an ldisc. So if we get called with any real data, I want
70 static void tell_char(FILE * stream
, char c
)
75 static void tell_str(FILE * stream
, char *str
)
79 for (i
= 0; i
< strlen(str
); ++i
)
80 tell_char(stream
, str
[i
]);
83 static void tell_user(FILE * stream
, char *fmt
, ...)
88 str
= dupvprintf(fmt
, ap
);
90 str2
= dupcat(str
, "\n", NULL
);
92 tell_str(stream
, str2
);
97 * Print an error message and perform a fatal exit.
99 void fatalbox(char *fmt
, ...)
104 str
= dupvprintf(fmt
, ap
);
105 str2
= dupcat("Fatal: ", str
, "\n", NULL
);
108 tell_str(stderr
, str2
);
114 void modalfatalbox(char *fmt
, ...)
119 str
= dupvprintf(fmt
, ap
);
120 str2
= dupcat("Fatal: ", str
, "\n", NULL
);
123 tell_str(stderr
, str2
);
129 void connection_fatal(void *frontend
, char *fmt
, ...)
134 str
= dupvprintf(fmt
, ap
);
135 str2
= dupcat("Fatal: ", str
, "\n", NULL
);
138 tell_str(stderr
, str2
);
146 * In pscp, all agent requests should be synchronous, so this is a
149 void agent_schedule_callback(void (*callback
)(void *, void *, int),
150 void *callback_ctx
, void *data
, int len
)
152 assert(!"We shouldn't be here");
156 * Receive a block of data from the SSH link. Block until all data
159 * To do this, we repeatedly call the SSH protocol module, with our
160 * own trap in from_backend() to catch the data that comes back. We
161 * do this until we have enough data.
164 static unsigned char *outptr
; /* where to put the data */
165 static unsigned outlen
; /* how much data required */
166 static unsigned char *pending
= NULL
; /* any spare data */
167 static unsigned pendlen
= 0, pendsize
= 0; /* length and phys. size of buffer */
168 int from_backend(void *frontend
, int is_stderr
, const char *data
, int datalen
)
170 unsigned char *p
= (unsigned char *) data
;
171 unsigned len
= (unsigned) datalen
;
174 * stderr data is just spouted to local stderr and otherwise
179 fwrite(data
, 1, len
, stderr
);
184 * If this is before the real session begins, just return.
189 if ((outlen
> 0) && (len
> 0)) {
190 unsigned used
= outlen
;
193 memcpy(outptr
, p
, used
);
201 if (pendsize
< pendlen
+ len
) {
202 pendsize
= pendlen
+ len
+ 4096;
203 pending
= sresize(pending
, pendsize
, unsigned char);
205 memcpy(pending
+ pendlen
, p
, len
);
211 int from_backend_untrusted(void *frontend_handle
, const char *data
, int len
)
214 * No "untrusted" output should get here (the way the code is
215 * currently, it's all diverted by FLAG_STDERR).
217 assert(!"Unexpected call to from_backend_untrusted()");
218 return 0; /* not reached */
220 static int ssh_scp_recv(unsigned char *buf
, int len
)
226 * See if the pending-input block contains some of what we
230 unsigned pendused
= pendlen
;
231 if (pendused
> outlen
)
233 memcpy(outptr
, pending
, pendused
);
234 memmove(pending
, pending
+ pendused
, pendlen
- pendused
);
248 if (back
->exitcode(backhandle
) >= 0 || ssh_sftp_loop_iteration() < 0)
256 * Loop through the ssh connection and authentication process.
258 static void ssh_scp_init(void)
260 while (!back
->sendok(backhandle
)) {
261 if (ssh_sftp_loop_iteration() < 0)
265 /* Work out which backend we ended up using. */
266 if (!ssh_fallback_cmd(backhandle
))
267 using_sftp
= main_cmd_is_sftp
;
269 using_sftp
= fallback_cmd_is_sftp
;
273 tell_user(stderr
, "Using SFTP");
275 tell_user(stderr
, "Using SCP1");
280 * Print an error message and exit after closing the SSH link.
282 static void bump(char *fmt
, ...)
287 str
= dupvprintf(fmt
, ap
);
289 str2
= dupcat(str
, "\n", NULL
);
291 tell_str(stderr
, str2
);
295 if (back
!= NULL
&& back
->connected(backhandle
)) {
297 back
->special(backhandle
, TS_EOF
);
298 ssh_scp_recv((unsigned char *) &ch
, 1);
305 * Open an SSH connection to user@host and execute cmd.
307 static void do_cmd(char *host
, char *user
, char *cmd
)
313 if (host
== NULL
|| host
[0] == '\0')
314 bump("Empty host name");
317 * Remove fiddly bits of address: remove a colon suffix, and
318 * the square brackets around an IPv6 literal address.
320 if (host
[0] == '[') {
322 host
[strcspn(host
, "]")] = '\0';
324 host
[strcspn(host
, ":")] = '\0';
328 * If we haven't loaded session details already (e.g., from -load),
329 * try looking for a session called "host".
331 if (!loaded_session
) {
332 /* Try to load settings for `host' into a temporary config */
335 do_defaults(host
, &cfg2
);
336 if (cfg2
.host
[0] != '\0') {
337 /* Settings present and include hostname */
338 /* Re-load data into the real config. */
339 do_defaults(host
, &cfg
);
341 /* Session doesn't exist or mention a hostname. */
342 /* Use `host' as a bare hostname. */
343 strncpy(cfg
.host
, host
, sizeof(cfg
.host
) - 1);
344 cfg
.host
[sizeof(cfg
.host
) - 1] = '\0';
347 /* Patch in hostname `host' to session details. */
348 strncpy(cfg
.host
, host
, sizeof(cfg
.host
) - 1);
349 cfg
.host
[sizeof(cfg
.host
) - 1] = '\0';
353 * Force use of SSH. (If they got the protocol wrong we assume the
354 * port is useless too.)
356 if (cfg
.protocol
!= PROT_SSH
) {
357 cfg
.protocol
= PROT_SSH
;
362 * Enact command-line overrides.
364 cmdline_run_saved(&cfg
);
367 * Trim leading whitespace off the hostname if it's there.
370 int space
= strspn(cfg
.host
, " \t");
371 memmove(cfg
.host
, cfg
.host
+space
, 1+strlen(cfg
.host
)-space
);
374 /* See if host is of the form user@host */
375 if (cfg
.host
[0] != '\0') {
376 char *atsign
= strrchr(cfg
.host
, '@');
377 /* Make sure we're not overflowing the user field */
379 if (atsign
- cfg
.host
< sizeof cfg
.username
) {
380 strncpy(cfg
.username
, cfg
.host
, atsign
- cfg
.host
);
381 cfg
.username
[atsign
- cfg
.host
] = '\0';
383 memmove(cfg
.host
, atsign
+ 1, 1 + strlen(atsign
+ 1));
388 * Remove any remaining whitespace from the hostname.
392 while (cfg
.host
[p2
] != '\0') {
393 if (cfg
.host
[p2
] != ' ' && cfg
.host
[p2
] != '\t') {
394 cfg
.host
[p1
] = cfg
.host
[p2
];
403 if (user
!= NULL
&& user
[0] != '\0') {
404 strncpy(cfg
.username
, user
, sizeof(cfg
.username
) - 1);
405 cfg
.username
[sizeof(cfg
.username
) - 1] = '\0';
406 } else if (cfg
.username
[0] == '\0') {
407 user
= get_username();
409 bump("Empty user name");
412 tell_user(stderr
, "Guessing user name: %s", user
);
413 strncpy(cfg
.username
, user
, sizeof(cfg
.username
) - 1);
414 cfg
.username
[sizeof(cfg
.username
) - 1] = '\0';
420 * Disable scary things which shouldn't be enabled for simple
421 * things like SCP and SFTP: agent forwarding, port forwarding,
426 cfg
.portfwd
[0] = cfg
.portfwd
[1] = '\0';
429 * Set up main and possibly fallback command depending on
430 * options specified by user.
431 * Attempt to start the SFTP subsystem as a first choice,
432 * falling back to the provided scp command if that fails.
434 cfg
.remote_cmd_ptr2
= NULL
;
436 /* First choice is SFTP subsystem. */
437 main_cmd_is_sftp
= 1;
438 strcpy(cfg
.remote_cmd
, "sftp");
439 cfg
.ssh_subsys
= TRUE
;
441 /* Fallback is to use the provided scp command. */
442 fallback_cmd_is_sftp
= 0;
443 cfg
.remote_cmd_ptr2
= cmd
;
444 cfg
.ssh_subsys2
= FALSE
;
446 /* Since we're not going to try SCP, we may as well try
447 * harder to find an SFTP server, since in the current
448 * implementation we have a spare slot. */
449 fallback_cmd_is_sftp
= 1;
450 /* see psftp.c for full explanation of this kludge */
451 cfg
.remote_cmd_ptr2
=
452 "test -x /usr/lib/sftp-server && exec /usr/lib/sftp-server\n"
453 "test -x /usr/local/lib/sftp-server && exec /usr/local/lib/sftp-server\n"
455 cfg
.ssh_subsys2
= FALSE
;
458 /* Don't try SFTP at all; just try the scp command. */
459 main_cmd_is_sftp
= 0;
460 cfg
.remote_cmd_ptr
= cmd
;
461 cfg
.ssh_subsys
= FALSE
;
467 err
= back
->init(NULL
, &backhandle
, &cfg
, cfg
.host
, cfg
.port
, &realhost
,
468 0, cfg
.tcp_keepalives
);
470 bump("ssh_init: %s", err
);
471 logctx
= log_init(NULL
, &cfg
);
472 back
->provide_logctx(backhandle
, logctx
);
473 console_provide_logctx(logctx
);
475 if (verbose
&& realhost
!= NULL
)
476 tell_user(stderr
, "Connected to %s\n", realhost
);
481 * Update statistic information about current file.
483 static void print_stats(char *name
, uint64 size
, uint64 done
,
484 time_t start
, time_t now
)
495 elap
= (unsigned long) difftime(now
, start
);
498 ratebs
= (float) (uint64_to_double(done
) / elap
);
500 ratebs
= (float) uint64_to_double(done
);
503 eta
= (unsigned long) (uint64_to_double(uint64_subtract(size
, done
)));
505 eta
= (unsigned long)
506 ((uint64_to_double(uint64_subtract(size
, done
)) / ratebs
));
509 etastr
= dupprintf("%02ld:%02ld:%02ld",
510 eta
/ 3600, (eta
% 3600) / 60, eta
% 60);
512 donedbl
= uint64_to_double(done
);
513 sizedbl
= uint64_to_double(size
);
514 pct
= (int) (100 * (donedbl
* 1.0 / sizedbl
));
518 /* divide by 1024 to provide kB */
519 uint64_decimal(uint64_shift_right(done
, 10), donekb
);
520 len
= printf("\r%-25.25s | %s kB | %5.1f kB/s | ETA: %8s | %3d%%",
522 donekb
, ratebs
/ 1024.0, etastr
, pct
);
523 if (len
< prev_stats_len
)
524 printf("%*s", prev_stats_len
- len
, "");
525 prev_stats_len
= len
;
527 if (uint64_compare(done
, size
) == 0)
537 * Find a colon in str and return a pointer to the colon.
538 * This is used to separate hostname from filename.
540 static char *colon(char *str
)
542 /* We ignore a leading colon, since the hostname cannot be
543 empty. We also ignore a colon as second character because
544 of filenames like f:myfile.txt. */
545 if (str
[0] == '\0' || str
[0] == ':' ||
546 (str
[0] != '[' && str
[1] == ':'))
548 while (*str
!= '\0' && *str
!= ':' && *str
!= '/' && *str
!= '\\') {
550 /* Skip over IPv6 literal addresses
551 * (eg: 'jeroen@[2001:db8::1]:myfile.txt') */
552 char *ipv6_end
= strchr(str
, ']');
566 * Return a pointer to the portion of str that comes after the last
567 * slash (or backslash or colon, if `local' is TRUE).
569 static char *stripslashes(char *str
, int local
)
574 p
= strchr(str
, ':');
578 p
= strrchr(str
, '/');
582 p
= strrchr(str
, '\\');
590 * Determine whether a string is entirely composed of dots.
592 static int is_dots(char *str
)
594 return str
[strspn(str
, ".")] == '\0';
598 * Wait for a response from the other side.
599 * Return 0 if ok, -1 if error.
601 static int response(void)
603 char ch
, resp
, rbuf
[2048];
606 if (ssh_scp_recv((unsigned char *) &resp
, 1) <= 0)
607 bump("Lost connection");
617 case 2: /* fatal error */
619 if (ssh_scp_recv((unsigned char *) &ch
, 1) <= 0)
620 bump("Protocol error: Lost connection");
622 } while (p
< sizeof(rbuf
) && ch
!= '\n');
625 tell_user(stderr
, "%s\n", rbuf
);
633 int sftp_recvdata(char *buf
, int len
)
635 return ssh_scp_recv((unsigned char *) buf
, len
);
637 int sftp_senddata(char *buf
, int len
)
639 back
->send(backhandle
, buf
, len
);
643 /* ----------------------------------------------------------------------
644 * sftp-based replacement for the hacky `pscp -ls'.
646 static int sftp_ls_compare(const void *av
, const void *bv
)
648 const struct fxp_name
*a
= (const struct fxp_name
*) av
;
649 const struct fxp_name
*b
= (const struct fxp_name
*) bv
;
650 return strcmp(a
->filename
, b
->filename
);
652 void scp_sftp_listdir(char *dirname
)
654 struct fxp_handle
*dirh
;
655 struct fxp_names
*names
;
656 struct fxp_name
*ournames
;
657 struct sftp_packet
*pktin
;
658 struct sftp_request
*req
, *rreq
;
659 int nnames
, namesize
;
663 tell_user(stderr
, "unable to initialise SFTP: %s", fxp_error());
668 printf("Listing directory %s\n", dirname
);
670 sftp_register(req
= fxp_opendir_send(dirname
));
671 rreq
= sftp_find_request(pktin
= sftp_recv());
673 dirh
= fxp_opendir_recv(pktin
, rreq
);
676 printf("Unable to open %s: %s\n", dirname
, fxp_error());
678 nnames
= namesize
= 0;
683 sftp_register(req
= fxp_readdir_send(dirh
));
684 rreq
= sftp_find_request(pktin
= sftp_recv());
686 names
= fxp_readdir_recv(pktin
, rreq
);
689 if (fxp_error_type() == SSH_FX_EOF
)
691 printf("Reading directory %s: %s\n", dirname
, fxp_error());
694 if (names
->nnames
== 0) {
695 fxp_free_names(names
);
699 if (nnames
+ names
->nnames
>= namesize
) {
700 namesize
+= names
->nnames
+ 128;
701 ournames
= sresize(ournames
, namesize
, struct fxp_name
);
704 for (i
= 0; i
< names
->nnames
; i
++)
705 ournames
[nnames
++] = names
->names
[i
];
706 names
->nnames
= 0; /* prevent free_names */
707 fxp_free_names(names
);
709 sftp_register(req
= fxp_close_send(dirh
));
710 rreq
= sftp_find_request(pktin
= sftp_recv());
712 fxp_close_recv(pktin
, rreq
);
715 * Now we have our filenames. Sort them by actual file
716 * name, and then output the longname parts.
718 qsort(ournames
, nnames
, sizeof(*ournames
), sftp_ls_compare
);
723 for (i
= 0; i
< nnames
; i
++)
724 printf("%s\n", ournames
[i
].longname
);
728 /* ----------------------------------------------------------------------
729 * Helper routines that contain the actual SCP protocol elements,
730 * implemented both as SCP1 and SFTP.
733 static struct scp_sftp_dirstack
{
734 struct scp_sftp_dirstack
*next
;
735 struct fxp_name
*names
;
736 int namepos
, namelen
;
739 int matched_something
; /* wildcard match set was non-empty */
740 } *scp_sftp_dirstack_head
;
741 static char *scp_sftp_remotepath
, *scp_sftp_currentname
;
742 static char *scp_sftp_wildcard
;
743 static int scp_sftp_targetisdir
, scp_sftp_donethistarget
;
744 static int scp_sftp_preserve
, scp_sftp_recursive
;
745 static unsigned long scp_sftp_mtime
, scp_sftp_atime
;
746 static int scp_has_times
;
747 static struct fxp_handle
*scp_sftp_filehandle
;
748 static struct fxp_xfer
*scp_sftp_xfer
;
749 static uint64 scp_sftp_fileoffset
;
751 int scp_source_setup(char *target
, int shouldbedir
)
755 * Find out whether the target filespec is in fact a
758 struct sftp_packet
*pktin
;
759 struct sftp_request
*req
, *rreq
;
760 struct fxp_attrs attrs
;
764 tell_user(stderr
, "unable to initialise SFTP: %s", fxp_error());
769 sftp_register(req
= fxp_stat_send(target
));
770 rreq
= sftp_find_request(pktin
= sftp_recv());
772 ret
= fxp_stat_recv(pktin
, rreq
, &attrs
);
774 if (!ret
|| !(attrs
.flags
& SSH_FILEXFER_ATTR_PERMISSIONS
))
775 scp_sftp_targetisdir
= 0;
777 scp_sftp_targetisdir
= (attrs
.permissions
& 0040000) != 0;
779 if (shouldbedir
&& !scp_sftp_targetisdir
) {
780 bump("pscp: remote filespec %s: not a directory\n", target
);
783 scp_sftp_remotepath
= dupstr(target
);
792 int scp_send_errmsg(char *str
)
795 /* do nothing; we never need to send our errors to the server */
797 back
->send(backhandle
, "\001", 1);/* scp protocol error prefix */
798 back
->send(backhandle
, str
, strlen(str
));
800 return 0; /* can't fail */
803 int scp_send_filetimes(unsigned long mtime
, unsigned long atime
)
806 scp_sftp_mtime
= mtime
;
807 scp_sftp_atime
= atime
;
812 sprintf(buf
, "T%lu 0 %lu 0\n", mtime
, atime
);
813 back
->send(backhandle
, buf
, strlen(buf
));
818 int scp_send_filename(char *name
, uint64 size
, int modes
)
822 struct sftp_packet
*pktin
;
823 struct sftp_request
*req
, *rreq
;
825 if (scp_sftp_targetisdir
) {
826 fullname
= dupcat(scp_sftp_remotepath
, "/", name
, NULL
);
828 fullname
= dupstr(scp_sftp_remotepath
);
831 sftp_register(req
= fxp_open_send(fullname
, SSH_FXF_WRITE
|
832 SSH_FXF_CREAT
| SSH_FXF_TRUNC
));
833 rreq
= sftp_find_request(pktin
= sftp_recv());
835 scp_sftp_filehandle
= fxp_open_recv(pktin
, rreq
);
837 if (!scp_sftp_filehandle
) {
838 tell_user(stderr
, "pscp: unable to open %s: %s",
839 fullname
, fxp_error());
843 scp_sftp_fileoffset
= uint64_make(0, 0);
844 scp_sftp_xfer
= xfer_upload_init(scp_sftp_filehandle
,
845 scp_sftp_fileoffset
);
851 uint64_decimal(size
, sizestr
);
852 sprintf(buf
, "C%04o %s ", modes
, sizestr
);
853 back
->send(backhandle
, buf
, strlen(buf
));
854 back
->send(backhandle
, name
, strlen(name
));
855 back
->send(backhandle
, "\n", 1);
860 int scp_send_filedata(char *data
, int len
)
864 struct sftp_packet
*pktin
;
866 if (!scp_sftp_filehandle
) {
870 while (!xfer_upload_ready(scp_sftp_xfer
)) {
872 ret
= xfer_upload_gotpkt(scp_sftp_xfer
, pktin
);
874 tell_user(stderr
, "error while writing: %s\n", fxp_error());
880 xfer_upload_data(scp_sftp_xfer
, data
, len
);
882 scp_sftp_fileoffset
= uint64_add32(scp_sftp_fileoffset
, len
);
885 int bufsize
= back
->send(backhandle
, data
, len
);
888 * If the network transfer is backing up - that is, the
889 * remote site is not accepting data as fast as we can
890 * produce it - then we must loop on network events until
891 * we have space in the buffer again.
893 while (bufsize
> MAX_SCP_BUFSIZE
) {
894 if (ssh_sftp_loop_iteration() < 0)
896 bufsize
= back
->sendbuffer(backhandle
);
903 int scp_send_finish(void)
906 struct fxp_attrs attrs
;
907 struct sftp_packet
*pktin
;
908 struct sftp_request
*req
, *rreq
;
911 while (!xfer_done(scp_sftp_xfer
)) {
913 xfer_upload_gotpkt(scp_sftp_xfer
, pktin
);
915 xfer_cleanup(scp_sftp_xfer
);
917 if (!scp_sftp_filehandle
) {
921 attrs
.flags
= SSH_FILEXFER_ATTR_ACMODTIME
;
922 attrs
.atime
= scp_sftp_atime
;
923 attrs
.mtime
= scp_sftp_mtime
;
924 sftp_register(req
= fxp_fsetstat_send(scp_sftp_filehandle
, attrs
));
925 rreq
= sftp_find_request(pktin
= sftp_recv());
927 ret
= fxp_fsetstat_recv(pktin
, rreq
);
929 tell_user(stderr
, "unable to set file times: %s\n", fxp_error());
933 sftp_register(req
= fxp_close_send(scp_sftp_filehandle
));
934 rreq
= sftp_find_request(pktin
= sftp_recv());
936 fxp_close_recv(pktin
, rreq
);
940 back
->send(backhandle
, "", 1);
945 char *scp_save_remotepath(void)
948 return scp_sftp_remotepath
;
953 void scp_restore_remotepath(char *data
)
956 scp_sftp_remotepath
= data
;
959 int scp_send_dirname(char *name
, int modes
)
964 struct fxp_attrs attrs
;
965 struct sftp_packet
*pktin
;
966 struct sftp_request
*req
, *rreq
;
969 if (scp_sftp_targetisdir
) {
970 fullname
= dupcat(scp_sftp_remotepath
, "/", name
, NULL
);
972 fullname
= dupstr(scp_sftp_remotepath
);
976 * We don't worry about whether we managed to create the
977 * directory, because if it exists already it's OK just to
978 * use it. Instead, we will stat it afterwards, and if it
979 * exists and is a directory we will assume we were either
980 * successful or it didn't matter.
982 sftp_register(req
= fxp_mkdir_send(fullname
));
983 rreq
= sftp_find_request(pktin
= sftp_recv());
985 ret
= fxp_mkdir_recv(pktin
, rreq
);
990 err
= "server reported no error";
992 sftp_register(req
= fxp_stat_send(fullname
));
993 rreq
= sftp_find_request(pktin
= sftp_recv());
995 ret
= fxp_stat_recv(pktin
, rreq
, &attrs
);
997 if (!ret
|| !(attrs
.flags
& SSH_FILEXFER_ATTR_PERMISSIONS
) ||
998 !(attrs
.permissions
& 0040000)) {
999 tell_user(stderr
, "unable to create directory %s: %s",
1005 scp_sftp_remotepath
= fullname
;
1010 sprintf(buf
, "D%04o 0 ", modes
);
1011 back
->send(backhandle
, buf
, strlen(buf
));
1012 back
->send(backhandle
, name
, strlen(name
));
1013 back
->send(backhandle
, "\n", 1);
1018 int scp_send_enddir(void)
1021 sfree(scp_sftp_remotepath
);
1024 back
->send(backhandle
, "E\n", 2);
1030 * Yes, I know; I have an scp_sink_setup _and_ an scp_sink_init.
1031 * That's bad. The difference is that scp_sink_setup is called once
1032 * right at the start, whereas scp_sink_init is called to
1033 * initialise every level of recursion in the protocol.
1035 int scp_sink_setup(char *source
, int preserve
, int recursive
)
1041 tell_user(stderr
, "unable to initialise SFTP: %s", fxp_error());
1046 * It's possible that the source string we've been given
1047 * contains a wildcard. If so, we must split the directory
1048 * away from the wildcard itself (throwing an error if any
1049 * wildcardness comes before the final slash) and arrange
1050 * things so that a dirstack entry will be set up.
1052 newsource
= snewn(1+strlen(source
), char);
1053 if (!wc_unescape(newsource
, source
)) {
1054 /* Yes, here we go; it's a wildcard. Bah. */
1055 char *dupsource
, *lastpart
, *dirpart
, *wildcard
;
1056 dupsource
= dupstr(source
);
1057 lastpart
= stripslashes(dupsource
, 0);
1058 wildcard
= dupstr(lastpart
);
1060 if (*dupsource
&& dupsource
[1]) {
1062 * The remains of dupsource are at least two
1063 * characters long, meaning the pathname wasn't
1064 * empty or just `/'. Hence, we remove the trailing
1067 lastpart
[-1] = '\0';
1068 } else if (!*dupsource
) {
1070 * The remains of dupsource are _empty_ - the whole
1071 * pathname was a wildcard. Hence we need to
1072 * replace it with ".".
1075 dupsource
= dupstr(".");
1079 * Now we have separated our string into dupsource (the
1080 * directory part) and wildcard. Both of these will
1081 * need freeing at some point. Next step is to remove
1082 * wildcard escapes from the directory part, throwing
1083 * an error if it contains a real wildcard.
1085 dirpart
= snewn(1+strlen(dupsource
), char);
1086 if (!wc_unescape(dirpart
, dupsource
)) {
1087 tell_user(stderr
, "%s: multiple-level wildcards unsupported",
1097 * Now we have dirpart (unescaped, ie a valid remote
1098 * path), and wildcard (a wildcard). This will be
1099 * sufficient to arrange a dirstack entry.
1101 scp_sftp_remotepath
= dirpart
;
1102 scp_sftp_wildcard
= wildcard
;
1105 scp_sftp_remotepath
= newsource
;
1106 scp_sftp_wildcard
= NULL
;
1108 scp_sftp_preserve
= preserve
;
1109 scp_sftp_recursive
= recursive
;
1110 scp_sftp_donethistarget
= 0;
1111 scp_sftp_dirstack_head
= NULL
;
1116 int scp_sink_init(void)
1119 back
->send(backhandle
, "", 1);
1124 #define SCP_SINK_FILE 1
1125 #define SCP_SINK_DIR 2
1126 #define SCP_SINK_ENDDIR 3
1127 #define SCP_SINK_RETRY 4 /* not an action; just try again */
1128 struct scp_sink_action
{
1129 int action
; /* FILE, DIR, ENDDIR */
1130 char *buf
; /* will need freeing after use */
1131 char *name
; /* filename or dirname (not ENDDIR) */
1132 int mode
; /* access mode (not ENDDIR) */
1133 uint64 size
; /* file size (not ENDDIR) */
1134 int settime
; /* 1 if atime and mtime are filled */
1135 unsigned long atime
, mtime
; /* access times for the file */
1138 int scp_get_sink_action(struct scp_sink_action
*act
)
1142 int must_free_fname
;
1143 struct fxp_attrs attrs
;
1144 struct sftp_packet
*pktin
;
1145 struct sftp_request
*req
, *rreq
;
1148 if (!scp_sftp_dirstack_head
) {
1149 if (!scp_sftp_donethistarget
) {
1151 * Simple case: we are only dealing with one file.
1153 fname
= scp_sftp_remotepath
;
1154 must_free_fname
= 0;
1155 scp_sftp_donethistarget
= 1;
1158 * Even simpler case: one file _which we've done_.
1159 * Return 1 (finished).
1165 * We're now in the middle of stepping through a list
1166 * of names returned from fxp_readdir(); so let's carry
1169 struct scp_sftp_dirstack
*head
= scp_sftp_dirstack_head
;
1170 while (head
->namepos
< head
->namelen
&&
1171 (is_dots(head
->names
[head
->namepos
].filename
) ||
1173 !wc_match(head
->wildcard
,
1174 head
->names
[head
->namepos
].filename
))))
1175 head
->namepos
++; /* skip . and .. */
1176 if (head
->namepos
< head
->namelen
) {
1177 head
->matched_something
= 1;
1178 fname
= dupcat(head
->dirpath
, "/",
1179 head
->names
[head
->namepos
++].filename
,
1181 must_free_fname
= 1;
1184 * We've come to the end of the list; pop it off
1185 * the stack and return an ENDDIR action (or RETRY
1186 * if this was a wildcard match).
1188 if (head
->wildcard
) {
1189 act
->action
= SCP_SINK_RETRY
;
1190 if (!head
->matched_something
) {
1191 tell_user(stderr
, "pscp: wildcard '%s' matched "
1192 "no files", head
->wildcard
);
1195 sfree(head
->wildcard
);
1198 act
->action
= SCP_SINK_ENDDIR
;
1201 sfree(head
->dirpath
);
1203 scp_sftp_dirstack_head
= head
->next
;
1211 * Now we have a filename. Stat it, and see if it's a file
1214 sftp_register(req
= fxp_stat_send(fname
));
1215 rreq
= sftp_find_request(pktin
= sftp_recv());
1216 assert(rreq
== req
);
1217 ret
= fxp_stat_recv(pktin
, rreq
, &attrs
);
1219 if (!ret
|| !(attrs
.flags
& SSH_FILEXFER_ATTR_PERMISSIONS
)) {
1220 tell_user(stderr
, "unable to identify %s: %s", fname
,
1221 ret ?
"file type not supplied" : fxp_error());
1226 if (attrs
.permissions
& 0040000) {
1227 struct scp_sftp_dirstack
*newitem
;
1228 struct fxp_handle
*dirhandle
;
1229 int nnames
, namesize
;
1230 struct fxp_name
*ournames
;
1231 struct fxp_names
*names
;
1234 * It's a directory. If we're not in recursive mode,
1235 * this merits a complaint (which is fatal if the name
1236 * was specified directly, but not if it was matched by
1239 * We skip this complaint completely if
1240 * scp_sftp_wildcard is set, because that's an
1241 * indication that we're not actually supposed to
1242 * _recursively_ transfer the dir, just scan it for
1243 * things matching the wildcard.
1245 if (!scp_sftp_recursive
&& !scp_sftp_wildcard
) {
1246 tell_user(stderr
, "pscp: %s: is a directory", fname
);
1248 if (must_free_fname
) sfree(fname
);
1249 if (scp_sftp_dirstack_head
) {
1250 act
->action
= SCP_SINK_RETRY
;
1258 * Otherwise, the fun begins. We must fxp_opendir() the
1259 * directory, slurp the filenames into memory, return
1260 * SCP_SINK_DIR (unless this is a wildcard match), and
1261 * set targetisdir. The next time we're called, we will
1262 * run through the list of filenames one by one,
1263 * matching them against a wildcard if present.
1265 * If targetisdir is _already_ set (meaning we're
1266 * already in the middle of going through another such
1267 * list), we must push the other (target,namelist) pair
1270 sftp_register(req
= fxp_opendir_send(fname
));
1271 rreq
= sftp_find_request(pktin
= sftp_recv());
1272 assert(rreq
== req
);
1273 dirhandle
= fxp_opendir_recv(pktin
, rreq
);
1276 tell_user(stderr
, "scp: unable to open directory %s: %s",
1277 fname
, fxp_error());
1278 if (must_free_fname
) sfree(fname
);
1282 nnames
= namesize
= 0;
1287 sftp_register(req
= fxp_readdir_send(dirhandle
));
1288 rreq
= sftp_find_request(pktin
= sftp_recv());
1289 assert(rreq
== req
);
1290 names
= fxp_readdir_recv(pktin
, rreq
);
1292 if (names
== NULL
) {
1293 if (fxp_error_type() == SSH_FX_EOF
)
1295 tell_user(stderr
, "scp: reading directory %s: %s\n",
1296 fname
, fxp_error());
1297 if (must_free_fname
) sfree(fname
);
1302 if (names
->nnames
== 0) {
1303 fxp_free_names(names
);
1306 if (nnames
+ names
->nnames
>= namesize
) {
1307 namesize
+= names
->nnames
+ 128;
1308 ournames
= sresize(ournames
, namesize
, struct fxp_name
);
1310 for (i
= 0; i
< names
->nnames
; i
++) {
1311 if (!strcmp(names
->names
[i
].filename
, ".") ||
1312 !strcmp(names
->names
[i
].filename
, "..")) {
1314 * . and .. are normal consequences of
1315 * reading a directory, and aren't worth
1316 * complaining about.
1318 } else if (!vet_filename(names
->names
[i
].filename
)) {
1319 tell_user(stderr
, "ignoring potentially dangerous server-"
1320 "supplied filename '%s'\n",
1321 names
->names
[i
].filename
);
1323 ournames
[nnames
++] = names
->names
[i
];
1325 names
->nnames
= 0; /* prevent free_names */
1326 fxp_free_names(names
);
1328 sftp_register(req
= fxp_close_send(dirhandle
));
1329 rreq
= sftp_find_request(pktin
= sftp_recv());
1330 assert(rreq
== req
);
1331 fxp_close_recv(pktin
, rreq
);
1333 newitem
= snew(struct scp_sftp_dirstack
);
1334 newitem
->next
= scp_sftp_dirstack_head
;
1335 newitem
->names
= ournames
;
1336 newitem
->namepos
= 0;
1337 newitem
->namelen
= nnames
;
1338 if (must_free_fname
)
1339 newitem
->dirpath
= fname
;
1341 newitem
->dirpath
= dupstr(fname
);
1342 if (scp_sftp_wildcard
) {
1343 newitem
->wildcard
= scp_sftp_wildcard
;
1344 newitem
->matched_something
= 0;
1345 scp_sftp_wildcard
= NULL
;
1347 newitem
->wildcard
= NULL
;
1349 scp_sftp_dirstack_head
= newitem
;
1351 if (newitem
->wildcard
) {
1352 act
->action
= SCP_SINK_RETRY
;
1354 act
->action
= SCP_SINK_DIR
;
1355 act
->buf
= dupstr(stripslashes(fname
, 0));
1356 act
->name
= act
->buf
;
1357 act
->size
= uint64_make(0,0); /* duhh, it's a directory */
1358 act
->mode
= 07777 & attrs
.permissions
;
1359 if (scp_sftp_preserve
&&
1360 (attrs
.flags
& SSH_FILEXFER_ATTR_ACMODTIME
)) {
1361 act
->atime
= attrs
.atime
;
1362 act
->mtime
= attrs
.mtime
;
1371 * It's a file. Return SCP_SINK_FILE.
1373 act
->action
= SCP_SINK_FILE
;
1374 act
->buf
= dupstr(stripslashes(fname
, 0));
1375 act
->name
= act
->buf
;
1376 if (attrs
.flags
& SSH_FILEXFER_ATTR_SIZE
) {
1377 act
->size
= attrs
.size
;
1379 act
->size
= uint64_make(ULONG_MAX
,ULONG_MAX
); /* no idea */
1380 act
->mode
= 07777 & attrs
.permissions
;
1381 if (scp_sftp_preserve
&&
1382 (attrs
.flags
& SSH_FILEXFER_ATTR_ACMODTIME
)) {
1383 act
->atime
= attrs
.atime
;
1384 act
->mtime
= attrs
.mtime
;
1388 if (must_free_fname
)
1389 scp_sftp_currentname
= fname
;
1391 scp_sftp_currentname
= dupstr(fname
);
1406 if (ssh_scp_recv((unsigned char *) &ch
, 1) <= 0)
1409 bump("Protocol error: Unexpected newline");
1413 if (ssh_scp_recv((unsigned char *) &ch
, 1) <= 0)
1414 bump("Lost connection");
1417 act
->buf
= sresize(act
->buf
, bufsize
, char);
1420 } while (ch
!= '\n');
1421 act
->buf
[i
- 1] = '\0';
1423 case '\01': /* error */
1424 tell_user(stderr
, "%s\n", act
->buf
);
1426 continue; /* go round again */
1427 case '\02': /* fatal error */
1428 bump("%s", act
->buf
);
1430 back
->send(backhandle
, "", 1);
1431 act
->action
= SCP_SINK_ENDDIR
;
1434 if (sscanf(act
->buf
, "%ld %*d %ld %*d",
1435 &act
->mtime
, &act
->atime
) == 2) {
1437 back
->send(backhandle
, "", 1);
1438 continue; /* go round again */
1440 bump("Protocol error: Illegal time format");
1443 act
->action
= (action
== 'C' ? SCP_SINK_FILE
: SCP_SINK_DIR
);
1446 bump("Protocol error: Expected control record");
1449 * We will go round this loop only once, unless we hit
1456 * If we get here, we must have seen SCP_SINK_FILE or
1462 if (sscanf(act
->buf
, "%o %s %n", &act
->mode
, sizestr
, &i
) != 2)
1463 bump("Protocol error: Illegal file descriptor format");
1464 act
->size
= uint64_from_decimal(sizestr
);
1465 act
->name
= act
->buf
+ i
;
1471 int scp_accept_filexfer(void)
1474 struct sftp_packet
*pktin
;
1475 struct sftp_request
*req
, *rreq
;
1477 sftp_register(req
= fxp_open_send(scp_sftp_currentname
, SSH_FXF_READ
));
1478 rreq
= sftp_find_request(pktin
= sftp_recv());
1479 assert(rreq
== req
);
1480 scp_sftp_filehandle
= fxp_open_recv(pktin
, rreq
);
1482 if (!scp_sftp_filehandle
) {
1483 tell_user(stderr
, "pscp: unable to open %s: %s",
1484 scp_sftp_currentname
, fxp_error());
1488 scp_sftp_fileoffset
= uint64_make(0, 0);
1489 scp_sftp_xfer
= xfer_download_init(scp_sftp_filehandle
,
1490 scp_sftp_fileoffset
);
1491 sfree(scp_sftp_currentname
);
1494 back
->send(backhandle
, "", 1);
1495 return 0; /* can't fail */
1499 int scp_recv_filedata(char *data
, int len
)
1502 struct sftp_packet
*pktin
;
1506 xfer_download_queue(scp_sftp_xfer
);
1507 pktin
= sftp_recv();
1508 ret
= xfer_download_gotpkt(scp_sftp_xfer
, pktin
);
1511 tell_user(stderr
, "pscp: error while reading: %s", fxp_error());
1516 if (xfer_download_data(scp_sftp_xfer
, &vbuf
, &actuallen
)) {
1518 * This assertion relies on the fact that the natural
1519 * block size used in the xfer manager is at most that
1520 * used in this module. I don't like crossing layers in
1521 * this way, but it'll do for now.
1523 assert(actuallen
<= len
);
1524 memcpy(data
, vbuf
, actuallen
);
1529 scp_sftp_fileoffset
= uint64_add32(scp_sftp_fileoffset
, actuallen
);
1533 return ssh_scp_recv((unsigned char *) data
, len
);
1537 int scp_finish_filerecv(void)
1540 struct sftp_packet
*pktin
;
1541 struct sftp_request
*req
, *rreq
;
1544 * Ensure that xfer_done() will work correctly, so we can
1545 * clean up any outstanding requests from the file
1548 xfer_set_error(scp_sftp_xfer
);
1549 while (!xfer_done(scp_sftp_xfer
)) {
1553 pktin
= sftp_recv();
1554 xfer_download_gotpkt(scp_sftp_xfer
, pktin
);
1555 if (xfer_download_data(scp_sftp_xfer
, &vbuf
, &len
))
1558 xfer_cleanup(scp_sftp_xfer
);
1560 sftp_register(req
= fxp_close_send(scp_sftp_filehandle
));
1561 rreq
= sftp_find_request(pktin
= sftp_recv());
1562 assert(rreq
== req
);
1563 fxp_close_recv(pktin
, rreq
);
1566 back
->send(backhandle
, "", 1);
1571 /* ----------------------------------------------------------------------
1572 * Send an error message to the other side and to the screen.
1573 * Increment error counter.
1575 static void run_err(const char *fmt
, ...)
1581 str
= dupvprintf(fmt
, ap
);
1582 str2
= dupcat("scp: ", str
, "\n", NULL
);
1584 scp_send_errmsg(str2
);
1585 tell_user(stderr
, "%s", str2
);
1591 * Execute the source part of the SCP protocol.
1593 static void source(char *src
)
1596 unsigned long mtime
, atime
;
1602 time_t stat_starttime
, stat_lasttime
;
1604 attr
= file_type(src
);
1605 if (attr
== FILE_TYPE_NONEXISTENT
||
1606 attr
== FILE_TYPE_WEIRD
) {
1607 run_err("%s: %s file or directory", src
,
1608 (attr
== FILE_TYPE_WEIRD ?
"Not a" : "No such"));
1612 if (attr
== FILE_TYPE_DIRECTORY
) {
1615 * Avoid . and .. directories.
1618 p
= strrchr(src
, '/');
1620 p
= strrchr(src
, '\\');
1625 if (!strcmp(p
, ".") || !strcmp(p
, ".."))
1626 /* skip . and .. */ ;
1630 run_err("%s: not a regular file", src
);
1635 if ((last
= strrchr(src
, '/')) == NULL
)
1639 if (strrchr(last
, '\\') != NULL
)
1640 last
= strrchr(last
, '\\') + 1;
1641 if (last
== src
&& strchr(src
, ':') != NULL
)
1642 last
= strchr(src
, ':') + 1;
1644 f
= open_existing_file(src
, &size
, &mtime
, &atime
);
1646 run_err("%s: Cannot open file", src
);
1650 if (scp_send_filetimes(mtime
, atime
))
1656 uint64_decimal(size
, sizestr
);
1657 tell_user(stderr
, "Sending file %s, size=%s", last
, sizestr
);
1659 if (scp_send_filename(last
, size
, 0644))
1662 stat_bytes
= uint64_make(0,0);
1663 stat_starttime
= time(NULL
);
1666 for (i
= uint64_make(0,0);
1667 uint64_compare(i
,size
) < 0;
1668 i
= uint64_add32(i
,4096)) {
1669 char transbuf
[4096];
1672 if (uint64_compare(uint64_add32(i
, k
),size
) > 0) /* i + k > size */
1673 k
= (uint64_subtract(size
, i
)).lo
; /* k = size - i; */
1674 if ((j
= read_from_file(f
, transbuf
, k
)) != k
) {
1677 bump("%s: Read error", src
);
1679 if (scp_send_filedata(transbuf
, k
))
1680 bump("%s: Network error occurred", src
);
1683 stat_bytes
= uint64_add32(stat_bytes
, k
);
1684 if (time(NULL
) != stat_lasttime
||
1685 (uint64_compare(uint64_add32(i
, k
), size
) == 0)) {
1686 stat_lasttime
= time(NULL
);
1687 print_stats(last
, size
, stat_bytes
,
1688 stat_starttime
, stat_lasttime
);
1695 (void) scp_send_finish();
1699 * Recursively send the contents of a directory.
1701 static void rsource(char *src
)
1707 if ((last
= strrchr(src
, '/')) == NULL
)
1711 if (strrchr(last
, '\\') != NULL
)
1712 last
= strrchr(last
, '\\') + 1;
1713 if (last
== src
&& strchr(src
, ':') != NULL
)
1714 last
= strchr(src
, ':') + 1;
1716 /* maybe send filetime */
1718 save_target
= scp_save_remotepath();
1721 tell_user(stderr
, "Entering directory: %s", last
);
1722 if (scp_send_dirname(last
, 0755))
1725 dir
= open_directory(src
);
1728 while ((filename
= read_filename(dir
)) != NULL
) {
1729 char *foundfile
= dupcat(src
, "/", filename
, NULL
);
1735 close_directory(dir
);
1737 (void) scp_send_enddir();
1739 scp_restore_remotepath(save_target
);
1743 * Execute the sink part of the SCP protocol.
1745 static void sink(char *targ
, char *src
)
1755 time_t stat_starttime
, stat_lasttime
;
1758 attr
= file_type(targ
);
1759 if (attr
== FILE_TYPE_DIRECTORY
)
1762 if (targetshouldbedirectory
&& !targisdir
)
1763 bump("%s: Not a directory", targ
);
1767 struct scp_sink_action act
;
1768 if (scp_get_sink_action(&act
))
1771 if (act
.action
== SCP_SINK_ENDDIR
)
1774 if (act
.action
== SCP_SINK_RETRY
)
1779 * Prevent the remote side from maliciously writing to
1780 * files outside the target area by sending a filename
1781 * containing `../'. In fact, it shouldn't be sending
1782 * filenames with any slashes or colons in at all; so
1783 * we'll find the last slash, backslash or colon in the
1784 * filename and use only the part after that. (And
1787 * In addition, we also ensure here that if we're
1788 * copying a single file and the target is a directory
1789 * (common usage: `pscp host:filename .') the remote
1790 * can't send us a _different_ file name. We can
1791 * distinguish this case because `src' will be non-NULL
1792 * and the last component of that will fail to match
1793 * (the last component of) the name sent.
1795 * Well, not always; if `src' is a wildcard, we do
1796 * expect to get back filenames that don't correspond
1797 * exactly to it. Ideally in this case, we would like
1798 * to ensure that the returned filename actually
1799 * matches the wildcard pattern - but one of SCP's
1800 * protocol infelicities is that wildcard matching is
1801 * done at the server end _by the server's rules_ and
1802 * so in general this is infeasible. Hence, we only
1803 * accept filenames that don't correspond to `src' if
1804 * unsafe mode is enabled or we are using SFTP (which
1805 * resolves remote wildcards on the client side and can
1808 char *striptarget
, *stripsrc
;
1810 striptarget
= stripslashes(act
.name
, 1);
1811 if (striptarget
!= act
.name
) {
1812 tell_user(stderr
, "warning: remote host sent a compound"
1813 " pathname '%s'", act
.name
);
1814 tell_user(stderr
, " renaming local file to '%s'",
1819 * Also check to see if the target filename is '.' or
1820 * '..', or indeed '...' and so on because Windows
1821 * appears to interpret those like '..'.
1823 if (is_dots(striptarget
)) {
1824 bump("security violation: remote host attempted to write to"
1825 " a '.' or '..' path!");
1829 stripsrc
= stripslashes(src
, 1);
1830 if (strcmp(striptarget
, stripsrc
) &&
1831 !using_sftp
&& !scp_unsafe_mode
) {
1832 tell_user(stderr
, "warning: remote host tried to write "
1833 "to a file called '%s'", striptarget
);
1834 tell_user(stderr
, " when we requested a file "
1835 "called '%s'.", stripsrc
);
1836 tell_user(stderr
, " If this is a wildcard, "
1837 "consider upgrading to SSH-2 or using");
1838 tell_user(stderr
, " the '-unsafe' option. Renaming"
1839 " of this file has been disallowed.");
1840 /* Override the name the server provided with our own. */
1841 striptarget
= stripsrc
;
1845 if (targ
[0] != '\0')
1846 destfname
= dir_file_cat(targ
, striptarget
);
1848 destfname
= dupstr(striptarget
);
1851 * In this branch of the if, the target area is a
1852 * single file with an explicitly specified name in any
1853 * case, so there's no danger.
1855 destfname
= dupstr(targ
);
1857 attr
= file_type(destfname
);
1858 exists
= (attr
!= FILE_TYPE_NONEXISTENT
);
1860 if (act
.action
== SCP_SINK_DIR
) {
1861 if (exists
&& attr
!= FILE_TYPE_DIRECTORY
) {
1862 run_err("%s: Not a directory", destfname
);
1866 if (!create_directory(destfname
)) {
1867 run_err("%s: Cannot create directory", destfname
);
1871 sink(destfname
, NULL
);
1872 /* can we set the timestamp for directories ? */
1876 f
= open_new_file(destfname
);
1878 run_err("%s: Cannot create file", destfname
);
1882 if (scp_accept_filexfer())
1885 stat_bytes
= uint64_make(0, 0);
1886 stat_starttime
= time(NULL
);
1888 stat_name
= stripslashes(destfname
, 1);
1890 received
= uint64_make(0, 0);
1891 while (uint64_compare(received
,act
.size
) < 0) {
1892 char transbuf
[32768];
1895 blksize
= uint64_make(0, 32768);
1896 if (uint64_compare(blksize
,uint64_subtract(act
.size
,received
)) > 0)
1897 blksize
= uint64_subtract(act
.size
,received
);
1898 read
= scp_recv_filedata(transbuf
, (int)blksize
.lo
);
1900 bump("Lost connection");
1903 if (write_to_file(f
, transbuf
, read
) != (int)read
) {
1905 /* FIXME: in sftp we can actually abort the transfer */
1907 printf("\r%-25.25s | %50s\n",
1909 "Write error.. waiting for end of file");
1913 stat_bytes
= uint64_add32(stat_bytes
,read
);
1914 if (time(NULL
) > stat_lasttime
||
1915 uint64_compare(uint64_add32(received
, read
), act
.size
) == 0) {
1916 stat_lasttime
= time(NULL
);
1917 print_stats(stat_name
, act
.size
, stat_bytes
,
1918 stat_starttime
, stat_lasttime
);
1921 received
= uint64_add32(received
, read
);
1924 set_file_times(f
, act
.mtime
, act
.atime
);
1929 run_err("%s: Write error", destfname
);
1932 (void) scp_finish_filerecv();
1939 * We will copy local files to a remote server.
1941 static void toremote(int argc
, char *argv
[])
1943 char *src
, *targ
, *host
, *user
;
1947 targ
= argv
[argc
- 1];
1949 /* Separate host from filename */
1953 bump("targ == NULL in toremote()");
1957 /* Substitute "." for empty target */
1959 /* Separate host and username */
1961 host
= strrchr(host
, '@');
1972 if (colon(argv
[0]) != NULL
)
1973 bump("%s: Remote to remote not supported", argv
[0]);
1975 wc_type
= test_wildcard(argv
[0], 1);
1976 if (wc_type
== WCTYPE_NONEXISTENT
)
1977 bump("%s: No such file or directory\n", argv
[0]);
1978 else if (wc_type
== WCTYPE_WILDCARD
)
1979 targetshouldbedirectory
= 1;
1982 cmd
= dupprintf("scp%s%s%s%s -t %s",
1983 verbose ?
" -v" : "",
1984 recursive ?
" -r" : "",
1985 preserve ?
" -p" : "",
1986 targetshouldbedirectory ?
" -d" : "", targ
);
1987 do_cmd(host
, user
, cmd
);
1990 if (scp_source_setup(targ
, targetshouldbedirectory
))
1993 for (i
= 0; i
< argc
- 1; i
++) {
1995 if (colon(src
) != NULL
) {
1996 tell_user(stderr
, "%s: Remote to remote not supported\n", src
);
2001 wc_type
= test_wildcard(src
, 1);
2002 if (wc_type
== WCTYPE_NONEXISTENT
) {
2003 run_err("%s: No such file or directory", src
);
2005 } else if (wc_type
== WCTYPE_FILENAME
) {
2009 WildcardMatcher
*wc
;
2012 wc
= begin_wildcard_matching(src
);
2014 run_err("%s: No such file or directory", src
);
2018 while ((filename
= wildcard_get_filename(wc
)) != NULL
) {
2023 finish_wildcard_matching(wc
);
2029 * We will copy files from a remote server to the local machine.
2031 static void tolocal(int argc
, char *argv
[])
2033 char *src
, *targ
, *host
, *user
;
2037 bump("More than one remote source not supported");
2042 /* Separate host from filename */
2046 bump("Local to local copy not supported");
2050 /* Substitute "." for empty filename */
2052 /* Separate username and hostname */
2054 host
= strrchr(host
, '@');
2064 cmd
= dupprintf("scp%s%s%s%s -f %s",
2065 verbose ?
" -v" : "",
2066 recursive ?
" -r" : "",
2067 preserve ?
" -p" : "",
2068 targetshouldbedirectory ?
" -d" : "", src
);
2069 do_cmd(host
, user
, cmd
);
2072 if (scp_sink_setup(src
, preserve
, recursive
))
2079 * We will issue a list command to get a remote directory.
2081 static void get_dir_list(int argc
, char *argv
[])
2083 char *src
, *host
, *user
;
2089 /* Separate host from filename */
2093 bump("Local to local copy not supported");
2097 /* Substitute "." for empty filename */
2099 /* Separate username and hostname */
2101 host
= strrchr(host
, '@');
2111 cmd
= snewn(4 * strlen(src
) + 100, char);
2112 strcpy(cmd
, "ls -la '");
2113 p
= cmd
+ strlen(cmd
);
2114 for (q
= src
; *q
; q
++) {
2127 do_cmd(host
, user
, cmd
);
2131 scp_sftp_listdir(src
);
2133 while (ssh_scp_recv((unsigned char *) &c
, 1) > 0)
2134 tell_char(stdout
, c
);
2139 * Short description of parameters.
2141 static void usage(void)
2143 printf("PuTTY Secure Copy client\n");
2144 printf("%s\n", ver
);
2145 printf("Usage: pscp [options] [user@]host:source target\n");
2147 (" pscp [options] source [source...] [user@]host:target\n");
2148 printf(" pscp [options] -ls [user@]host:filespec\n");
2149 printf("Options:\n");
2150 printf(" -V print version information and exit\n");
2151 printf(" -pgpfp print PGP key fingerprints and exit\n");
2152 printf(" -p preserve file attributes\n");
2153 printf(" -q quiet, don't show statistics\n");
2154 printf(" -r copy directories recursively\n");
2155 printf(" -v show verbose messages\n");
2156 printf(" -load sessname Load settings from saved session\n");
2157 printf(" -P port connect to specified port\n");
2158 printf(" -l user connect with specified username\n");
2159 printf(" -pw passw login with specified password\n");
2160 printf(" -1 -2 force use of particular SSH protocol version\n");
2161 printf(" -4 -6 force use of IPv4 or IPv6\n");
2162 printf(" -C enable compression\n");
2163 printf(" -i key private key file for authentication\n");
2164 printf(" -noagent disable use of Pageant\n");
2165 printf(" -agent enable use of Pageant\n");
2166 printf(" -batch disable all interactive prompts\n");
2167 printf(" -unsafe allow server-side wildcards (DANGEROUS)\n");
2168 printf(" -sftp force use of SFTP protocol\n");
2169 printf(" -scp force use of SCP protocol\n");
2172 * -gui is an internal option, used by GUI front ends to get
2173 * pscp to pass progress reports back to them. It's not an
2174 * ordinary user-accessible option, so it shouldn't be part of
2175 * the command-line help. The only people who need to know
2176 * about it are programmers, and they can read the source.
2179 (" -gui hWnd GUI mode with the windows handle for receiving messages\n");
2186 printf("pscp: %s\n", ver
);
2190 void cmdline_error(char *p
, ...)
2193 fprintf(stderr
, "pscp: ");
2195 vfprintf(stderr
, p
, ap
);
2197 fprintf(stderr
, "\n try typing just \"pscp\" for help\n");
2202 * Main program. (Called `psftp_main' because it gets called from
2203 * *sftp.c; bit silly, I know, but it had to be called _something_.)
2205 int psftp_main(int argc
, char *argv
[])
2209 default_protocol
= PROT_TELNET
;
2212 #ifdef FLAG_SYNCAGENT
2216 cmdline_tooltype
= TOOLTYPE_FILETRANSFER
;
2219 /* Load Default Settings before doing anything else. */
2220 do_defaults(NULL
, &cfg
);
2221 loaded_session
= FALSE
;
2223 for (i
= 1; i
< argc
; i
++) {
2225 if (argv
[i
][0] != '-')
2227 ret
= cmdline_process_param(argv
[i
], i
+1<argc?argv
[i
+1]:NULL
, 1, &cfg
);
2229 cmdline_error("option \"%s\" requires an argument", argv
[i
]);
2230 } else if (ret
== 2) {
2231 i
++; /* skip next argument */
2232 } else if (ret
== 1) {
2233 /* We have our own verbosity in addition to `flags'. */
2234 if (flags
& FLAG_VERBOSE
)
2236 } else if (strcmp(argv
[i
], "-pgpfp") == 0) {
2239 } else if (strcmp(argv
[i
], "-r") == 0) {
2241 } else if (strcmp(argv
[i
], "-p") == 0) {
2243 } else if (strcmp(argv
[i
], "-q") == 0) {
2245 } else if (strcmp(argv
[i
], "-h") == 0 || strcmp(argv
[i
], "-?") == 0) {
2247 } else if (strcmp(argv
[i
], "-V") == 0) {
2249 } else if (strcmp(argv
[i
], "-ls") == 0) {
2251 } else if (strcmp(argv
[i
], "-batch") == 0) {
2252 console_batch_mode
= 1;
2253 } else if (strcmp(argv
[i
], "-unsafe") == 0) {
2254 scp_unsafe_mode
= 1;
2255 } else if (strcmp(argv
[i
], "-sftp") == 0) {
2256 try_scp
= 0; try_sftp
= 1;
2257 } else if (strcmp(argv
[i
], "-scp") == 0) {
2258 try_scp
= 1; try_sftp
= 0;
2259 } else if (strcmp(argv
[i
], "--") == 0) {
2263 cmdline_error("unknown option \"%s\"", argv
[i
]);
2273 get_dir_list(argc
, argv
);
2280 targetshouldbedirectory
= 1;
2282 if (colon(argv
[argc
- 1]) != NULL
)
2283 toremote(argc
, argv
);
2285 tolocal(argc
, argv
);
2288 if (back
!= NULL
&& back
->connected(backhandle
)) {
2290 back
->special(backhandle
, TS_EOF
);
2291 ssh_scp_recv((unsigned char *) &ch
, 1);
2296 console_provide_logctx(NULL
);
2297 back
->free(backhandle
);
2301 return (errs
== 0 ?
0 : 1);