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
);
183 if ((outlen
> 0) && (len
> 0)) {
184 unsigned used
= outlen
;
187 memcpy(outptr
, p
, used
);
195 if (pendsize
< pendlen
+ len
) {
196 pendsize
= pendlen
+ len
+ 4096;
197 pending
= sresize(pending
, pendsize
, unsigned char);
199 memcpy(pending
+ pendlen
, p
, len
);
205 int from_backend_untrusted(void *frontend_handle
, const char *data
, int len
)
208 * No "untrusted" output should get here (the way the code is
209 * currently, it's all diverted by FLAG_STDERR).
211 assert(!"Unexpected call to from_backend_untrusted()");
212 return 0; /* not reached */
214 static int ssh_scp_recv(unsigned char *buf
, int len
)
220 * See if the pending-input block contains some of what we
224 unsigned pendused
= pendlen
;
225 if (pendused
> outlen
)
227 memcpy(outptr
, pending
, pendused
);
228 memmove(pending
, pending
+ pendused
, pendlen
- pendused
);
242 if (back
->exitcode(backhandle
) >= 0 || ssh_sftp_loop_iteration() < 0)
250 * Loop through the ssh connection and authentication process.
252 static void ssh_scp_init(void)
254 while (!back
->sendok(backhandle
)) {
255 if (back
->exitcode(backhandle
) >= 0) {
259 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';
427 cfg
.ssh_simple
= TRUE
;
430 * Set up main and possibly fallback command depending on
431 * options specified by user.
432 * Attempt to start the SFTP subsystem as a first choice,
433 * falling back to the provided scp command if that fails.
435 cfg
.remote_cmd_ptr2
= NULL
;
437 /* First choice is SFTP subsystem. */
438 main_cmd_is_sftp
= 1;
439 strcpy(cfg
.remote_cmd
, "sftp");
440 cfg
.ssh_subsys
= TRUE
;
442 /* Fallback is to use the provided scp command. */
443 fallback_cmd_is_sftp
= 0;
444 cfg
.remote_cmd_ptr2
= cmd
;
445 cfg
.ssh_subsys2
= FALSE
;
447 /* Since we're not going to try SCP, we may as well try
448 * harder to find an SFTP server, since in the current
449 * implementation we have a spare slot. */
450 fallback_cmd_is_sftp
= 1;
451 /* see psftp.c for full explanation of this kludge */
452 cfg
.remote_cmd_ptr2
=
453 "test -x /usr/lib/sftp-server && exec /usr/lib/sftp-server\n"
454 "test -x /usr/local/lib/sftp-server && exec /usr/local/lib/sftp-server\n"
456 cfg
.ssh_subsys2
= FALSE
;
459 /* Don't try SFTP at all; just try the scp command. */
460 main_cmd_is_sftp
= 0;
461 cfg
.remote_cmd_ptr
= cmd
;
462 cfg
.ssh_subsys
= FALSE
;
468 err
= back
->init(NULL
, &backhandle
, &cfg
, cfg
.host
, cfg
.port
, &realhost
,
469 0, cfg
.tcp_keepalives
);
471 bump("ssh_init: %s", err
);
472 logctx
= log_init(NULL
, &cfg
);
473 back
->provide_logctx(backhandle
, logctx
);
474 console_provide_logctx(logctx
);
476 if (verbose
&& realhost
!= NULL
&& errs
== 0)
477 tell_user(stderr
, "Connected to %s\n", realhost
);
482 * Update statistic information about current file.
484 static void print_stats(char *name
, uint64 size
, uint64 done
,
485 time_t start
, time_t now
)
496 elap
= (unsigned long) difftime(now
, start
);
499 ratebs
= (float) (uint64_to_double(done
) / elap
);
501 ratebs
= (float) uint64_to_double(done
);
504 eta
= (unsigned long) (uint64_to_double(uint64_subtract(size
, done
)));
506 eta
= (unsigned long)
507 ((uint64_to_double(uint64_subtract(size
, done
)) / ratebs
));
510 etastr
= dupprintf("%02ld:%02ld:%02ld",
511 eta
/ 3600, (eta
% 3600) / 60, eta
% 60);
513 donedbl
= uint64_to_double(done
);
514 sizedbl
= uint64_to_double(size
);
515 pct
= (int) (100 * (donedbl
* 1.0 / sizedbl
));
519 /* divide by 1024 to provide kB */
520 uint64_decimal(uint64_shift_right(done
, 10), donekb
);
521 len
= printf("\r%-25.25s | %s kB | %5.1f kB/s | ETA: %8s | %3d%%",
523 donekb
, ratebs
/ 1024.0, etastr
, pct
);
524 if (len
< prev_stats_len
)
525 printf("%*s", prev_stats_len
- len
, "");
526 prev_stats_len
= len
;
528 if (uint64_compare(done
, size
) == 0)
538 * Find a colon in str and return a pointer to the colon.
539 * This is used to separate hostname from filename.
541 static char *colon(char *str
)
543 /* We ignore a leading colon, since the hostname cannot be
544 empty. We also ignore a colon as second character because
545 of filenames like f:myfile.txt. */
546 if (str
[0] == '\0' || str
[0] == ':' ||
547 (str
[0] != '[' && str
[1] == ':'))
549 while (*str
!= '\0' && *str
!= ':' && *str
!= '/' && *str
!= '\\') {
551 /* Skip over IPv6 literal addresses
552 * (eg: 'jeroen@[2001:db8::1]:myfile.txt') */
553 char *ipv6_end
= strchr(str
, ']');
567 * Return a pointer to the portion of str that comes after the last
568 * slash (or backslash or colon, if `local' is TRUE).
570 static char *stripslashes(char *str
, int local
)
575 p
= strchr(str
, ':');
579 p
= strrchr(str
, '/');
583 p
= strrchr(str
, '\\');
591 * Determine whether a string is entirely composed of dots.
593 static int is_dots(char *str
)
595 return str
[strspn(str
, ".")] == '\0';
599 * Wait for a response from the other side.
600 * Return 0 if ok, -1 if error.
602 static int response(void)
604 char ch
, resp
, rbuf
[2048];
607 if (ssh_scp_recv((unsigned char *) &resp
, 1) <= 0)
608 bump("Lost connection");
618 case 2: /* fatal error */
620 if (ssh_scp_recv((unsigned char *) &ch
, 1) <= 0)
621 bump("Protocol error: Lost connection");
623 } while (p
< sizeof(rbuf
) && ch
!= '\n');
626 tell_user(stderr
, "%s\n", rbuf
);
634 int sftp_recvdata(char *buf
, int len
)
636 return ssh_scp_recv((unsigned char *) buf
, len
);
638 int sftp_senddata(char *buf
, int len
)
640 back
->send(backhandle
, buf
, len
);
644 /* ----------------------------------------------------------------------
645 * sftp-based replacement for the hacky `pscp -ls'.
647 static int sftp_ls_compare(const void *av
, const void *bv
)
649 const struct fxp_name
*a
= (const struct fxp_name
*) av
;
650 const struct fxp_name
*b
= (const struct fxp_name
*) bv
;
651 return strcmp(a
->filename
, b
->filename
);
653 void scp_sftp_listdir(char *dirname
)
655 struct fxp_handle
*dirh
;
656 struct fxp_names
*names
;
657 struct fxp_name
*ournames
;
658 struct sftp_packet
*pktin
;
659 struct sftp_request
*req
, *rreq
;
660 int nnames
, namesize
;
664 tell_user(stderr
, "unable to initialise SFTP: %s", fxp_error());
669 printf("Listing directory %s\n", dirname
);
671 sftp_register(req
= fxp_opendir_send(dirname
));
672 rreq
= sftp_find_request(pktin
= sftp_recv());
674 dirh
= fxp_opendir_recv(pktin
, rreq
);
677 printf("Unable to open %s: %s\n", dirname
, fxp_error());
679 nnames
= namesize
= 0;
684 sftp_register(req
= fxp_readdir_send(dirh
));
685 rreq
= sftp_find_request(pktin
= sftp_recv());
687 names
= fxp_readdir_recv(pktin
, rreq
);
690 if (fxp_error_type() == SSH_FX_EOF
)
692 printf("Reading directory %s: %s\n", dirname
, fxp_error());
695 if (names
->nnames
== 0) {
696 fxp_free_names(names
);
700 if (nnames
+ names
->nnames
>= namesize
) {
701 namesize
+= names
->nnames
+ 128;
702 ournames
= sresize(ournames
, namesize
, struct fxp_name
);
705 for (i
= 0; i
< names
->nnames
; i
++)
706 ournames
[nnames
++] = names
->names
[i
];
707 names
->nnames
= 0; /* prevent free_names */
708 fxp_free_names(names
);
710 sftp_register(req
= fxp_close_send(dirh
));
711 rreq
= sftp_find_request(pktin
= sftp_recv());
713 fxp_close_recv(pktin
, rreq
);
716 * Now we have our filenames. Sort them by actual file
717 * name, and then output the longname parts.
719 qsort(ournames
, nnames
, sizeof(*ournames
), sftp_ls_compare
);
724 for (i
= 0; i
< nnames
; i
++)
725 printf("%s\n", ournames
[i
].longname
);
729 /* ----------------------------------------------------------------------
730 * Helper routines that contain the actual SCP protocol elements,
731 * implemented both as SCP1 and SFTP.
734 static struct scp_sftp_dirstack
{
735 struct scp_sftp_dirstack
*next
;
736 struct fxp_name
*names
;
737 int namepos
, namelen
;
740 int matched_something
; /* wildcard match set was non-empty */
741 } *scp_sftp_dirstack_head
;
742 static char *scp_sftp_remotepath
, *scp_sftp_currentname
;
743 static char *scp_sftp_wildcard
;
744 static int scp_sftp_targetisdir
, scp_sftp_donethistarget
;
745 static int scp_sftp_preserve
, scp_sftp_recursive
;
746 static unsigned long scp_sftp_mtime
, scp_sftp_atime
;
747 static int scp_has_times
;
748 static struct fxp_handle
*scp_sftp_filehandle
;
749 static struct fxp_xfer
*scp_sftp_xfer
;
750 static uint64 scp_sftp_fileoffset
;
752 int scp_source_setup(char *target
, int shouldbedir
)
756 * Find out whether the target filespec is in fact a
759 struct sftp_packet
*pktin
;
760 struct sftp_request
*req
, *rreq
;
761 struct fxp_attrs attrs
;
765 tell_user(stderr
, "unable to initialise SFTP: %s", fxp_error());
770 sftp_register(req
= fxp_stat_send(target
));
771 rreq
= sftp_find_request(pktin
= sftp_recv());
773 ret
= fxp_stat_recv(pktin
, rreq
, &attrs
);
775 if (!ret
|| !(attrs
.flags
& SSH_FILEXFER_ATTR_PERMISSIONS
))
776 scp_sftp_targetisdir
= 0;
778 scp_sftp_targetisdir
= (attrs
.permissions
& 0040000) != 0;
780 if (shouldbedir
&& !scp_sftp_targetisdir
) {
781 bump("pscp: remote filespec %s: not a directory\n", target
);
784 scp_sftp_remotepath
= dupstr(target
);
793 int scp_send_errmsg(char *str
)
796 /* do nothing; we never need to send our errors to the server */
798 back
->send(backhandle
, "\001", 1);/* scp protocol error prefix */
799 back
->send(backhandle
, str
, strlen(str
));
801 return 0; /* can't fail */
804 int scp_send_filetimes(unsigned long mtime
, unsigned long atime
)
807 scp_sftp_mtime
= mtime
;
808 scp_sftp_atime
= atime
;
813 sprintf(buf
, "T%lu 0 %lu 0\n", mtime
, atime
);
814 back
->send(backhandle
, buf
, strlen(buf
));
819 int scp_send_filename(char *name
, uint64 size
, int modes
)
823 struct sftp_packet
*pktin
;
824 struct sftp_request
*req
, *rreq
;
826 if (scp_sftp_targetisdir
) {
827 fullname
= dupcat(scp_sftp_remotepath
, "/", name
, NULL
);
829 fullname
= dupstr(scp_sftp_remotepath
);
832 sftp_register(req
= fxp_open_send(fullname
, SSH_FXF_WRITE
|
833 SSH_FXF_CREAT
| SSH_FXF_TRUNC
));
834 rreq
= sftp_find_request(pktin
= sftp_recv());
836 scp_sftp_filehandle
= fxp_open_recv(pktin
, rreq
);
838 if (!scp_sftp_filehandle
) {
839 tell_user(stderr
, "pscp: unable to open %s: %s",
840 fullname
, fxp_error());
844 scp_sftp_fileoffset
= uint64_make(0, 0);
845 scp_sftp_xfer
= xfer_upload_init(scp_sftp_filehandle
,
846 scp_sftp_fileoffset
);
852 uint64_decimal(size
, sizestr
);
853 sprintf(buf
, "C%04o %s ", modes
, sizestr
);
854 back
->send(backhandle
, buf
, strlen(buf
));
855 back
->send(backhandle
, name
, strlen(name
));
856 back
->send(backhandle
, "\n", 1);
861 int scp_send_filedata(char *data
, int len
)
865 struct sftp_packet
*pktin
;
867 if (!scp_sftp_filehandle
) {
871 while (!xfer_upload_ready(scp_sftp_xfer
)) {
873 ret
= xfer_upload_gotpkt(scp_sftp_xfer
, pktin
);
875 tell_user(stderr
, "error while writing: %s\n", fxp_error());
881 xfer_upload_data(scp_sftp_xfer
, data
, len
);
883 scp_sftp_fileoffset
= uint64_add32(scp_sftp_fileoffset
, len
);
886 int bufsize
= back
->send(backhandle
, data
, len
);
889 * If the network transfer is backing up - that is, the
890 * remote site is not accepting data as fast as we can
891 * produce it - then we must loop on network events until
892 * we have space in the buffer again.
894 while (bufsize
> MAX_SCP_BUFSIZE
) {
895 if (ssh_sftp_loop_iteration() < 0)
897 bufsize
= back
->sendbuffer(backhandle
);
904 int scp_send_finish(void)
907 struct fxp_attrs attrs
;
908 struct sftp_packet
*pktin
;
909 struct sftp_request
*req
, *rreq
;
912 while (!xfer_done(scp_sftp_xfer
)) {
914 xfer_upload_gotpkt(scp_sftp_xfer
, pktin
);
916 xfer_cleanup(scp_sftp_xfer
);
918 if (!scp_sftp_filehandle
) {
922 attrs
.flags
= SSH_FILEXFER_ATTR_ACMODTIME
;
923 attrs
.atime
= scp_sftp_atime
;
924 attrs
.mtime
= scp_sftp_mtime
;
925 sftp_register(req
= fxp_fsetstat_send(scp_sftp_filehandle
, attrs
));
926 rreq
= sftp_find_request(pktin
= sftp_recv());
928 ret
= fxp_fsetstat_recv(pktin
, rreq
);
930 tell_user(stderr
, "unable to set file times: %s\n", fxp_error());
934 sftp_register(req
= fxp_close_send(scp_sftp_filehandle
));
935 rreq
= sftp_find_request(pktin
= sftp_recv());
937 fxp_close_recv(pktin
, rreq
);
941 back
->send(backhandle
, "", 1);
946 char *scp_save_remotepath(void)
949 return scp_sftp_remotepath
;
954 void scp_restore_remotepath(char *data
)
957 scp_sftp_remotepath
= data
;
960 int scp_send_dirname(char *name
, int modes
)
965 struct fxp_attrs attrs
;
966 struct sftp_packet
*pktin
;
967 struct sftp_request
*req
, *rreq
;
970 if (scp_sftp_targetisdir
) {
971 fullname
= dupcat(scp_sftp_remotepath
, "/", name
, NULL
);
973 fullname
= dupstr(scp_sftp_remotepath
);
977 * We don't worry about whether we managed to create the
978 * directory, because if it exists already it's OK just to
979 * use it. Instead, we will stat it afterwards, and if it
980 * exists and is a directory we will assume we were either
981 * successful or it didn't matter.
983 sftp_register(req
= fxp_mkdir_send(fullname
));
984 rreq
= sftp_find_request(pktin
= sftp_recv());
986 ret
= fxp_mkdir_recv(pktin
, rreq
);
991 err
= "server reported no error";
993 sftp_register(req
= fxp_stat_send(fullname
));
994 rreq
= sftp_find_request(pktin
= sftp_recv());
996 ret
= fxp_stat_recv(pktin
, rreq
, &attrs
);
998 if (!ret
|| !(attrs
.flags
& SSH_FILEXFER_ATTR_PERMISSIONS
) ||
999 !(attrs
.permissions
& 0040000)) {
1000 tell_user(stderr
, "unable to create directory %s: %s",
1006 scp_sftp_remotepath
= fullname
;
1011 sprintf(buf
, "D%04o 0 ", modes
);
1012 back
->send(backhandle
, buf
, strlen(buf
));
1013 back
->send(backhandle
, name
, strlen(name
));
1014 back
->send(backhandle
, "\n", 1);
1019 int scp_send_enddir(void)
1022 sfree(scp_sftp_remotepath
);
1025 back
->send(backhandle
, "E\n", 2);
1031 * Yes, I know; I have an scp_sink_setup _and_ an scp_sink_init.
1032 * That's bad. The difference is that scp_sink_setup is called once
1033 * right at the start, whereas scp_sink_init is called to
1034 * initialise every level of recursion in the protocol.
1036 int scp_sink_setup(char *source
, int preserve
, int recursive
)
1042 tell_user(stderr
, "unable to initialise SFTP: %s", fxp_error());
1047 * It's possible that the source string we've been given
1048 * contains a wildcard. If so, we must split the directory
1049 * away from the wildcard itself (throwing an error if any
1050 * wildcardness comes before the final slash) and arrange
1051 * things so that a dirstack entry will be set up.
1053 newsource
= snewn(1+strlen(source
), char);
1054 if (!wc_unescape(newsource
, source
)) {
1055 /* Yes, here we go; it's a wildcard. Bah. */
1056 char *dupsource
, *lastpart
, *dirpart
, *wildcard
;
1057 dupsource
= dupstr(source
);
1058 lastpart
= stripslashes(dupsource
, 0);
1059 wildcard
= dupstr(lastpart
);
1061 if (*dupsource
&& dupsource
[1]) {
1063 * The remains of dupsource are at least two
1064 * characters long, meaning the pathname wasn't
1065 * empty or just `/'. Hence, we remove the trailing
1068 lastpart
[-1] = '\0';
1069 } else if (!*dupsource
) {
1071 * The remains of dupsource are _empty_ - the whole
1072 * pathname was a wildcard. Hence we need to
1073 * replace it with ".".
1076 dupsource
= dupstr(".");
1080 * Now we have separated our string into dupsource (the
1081 * directory part) and wildcard. Both of these will
1082 * need freeing at some point. Next step is to remove
1083 * wildcard escapes from the directory part, throwing
1084 * an error if it contains a real wildcard.
1086 dirpart
= snewn(1+strlen(dupsource
), char);
1087 if (!wc_unescape(dirpart
, dupsource
)) {
1088 tell_user(stderr
, "%s: multiple-level wildcards unsupported",
1098 * Now we have dirpart (unescaped, ie a valid remote
1099 * path), and wildcard (a wildcard). This will be
1100 * sufficient to arrange a dirstack entry.
1102 scp_sftp_remotepath
= dirpart
;
1103 scp_sftp_wildcard
= wildcard
;
1106 scp_sftp_remotepath
= newsource
;
1107 scp_sftp_wildcard
= NULL
;
1109 scp_sftp_preserve
= preserve
;
1110 scp_sftp_recursive
= recursive
;
1111 scp_sftp_donethistarget
= 0;
1112 scp_sftp_dirstack_head
= NULL
;
1117 int scp_sink_init(void)
1120 back
->send(backhandle
, "", 1);
1125 #define SCP_SINK_FILE 1
1126 #define SCP_SINK_DIR 2
1127 #define SCP_SINK_ENDDIR 3
1128 #define SCP_SINK_RETRY 4 /* not an action; just try again */
1129 struct scp_sink_action
{
1130 int action
; /* FILE, DIR, ENDDIR */
1131 char *buf
; /* will need freeing after use */
1132 char *name
; /* filename or dirname (not ENDDIR) */
1133 int mode
; /* access mode (not ENDDIR) */
1134 uint64 size
; /* file size (not ENDDIR) */
1135 int settime
; /* 1 if atime and mtime are filled */
1136 unsigned long atime
, mtime
; /* access times for the file */
1139 int scp_get_sink_action(struct scp_sink_action
*act
)
1143 int must_free_fname
;
1144 struct fxp_attrs attrs
;
1145 struct sftp_packet
*pktin
;
1146 struct sftp_request
*req
, *rreq
;
1149 if (!scp_sftp_dirstack_head
) {
1150 if (!scp_sftp_donethistarget
) {
1152 * Simple case: we are only dealing with one file.
1154 fname
= scp_sftp_remotepath
;
1155 must_free_fname
= 0;
1156 scp_sftp_donethistarget
= 1;
1159 * Even simpler case: one file _which we've done_.
1160 * Return 1 (finished).
1166 * We're now in the middle of stepping through a list
1167 * of names returned from fxp_readdir(); so let's carry
1170 struct scp_sftp_dirstack
*head
= scp_sftp_dirstack_head
;
1171 while (head
->namepos
< head
->namelen
&&
1172 (is_dots(head
->names
[head
->namepos
].filename
) ||
1174 !wc_match(head
->wildcard
,
1175 head
->names
[head
->namepos
].filename
))))
1176 head
->namepos
++; /* skip . and .. */
1177 if (head
->namepos
< head
->namelen
) {
1178 head
->matched_something
= 1;
1179 fname
= dupcat(head
->dirpath
, "/",
1180 head
->names
[head
->namepos
++].filename
,
1182 must_free_fname
= 1;
1185 * We've come to the end of the list; pop it off
1186 * the stack and return an ENDDIR action (or RETRY
1187 * if this was a wildcard match).
1189 if (head
->wildcard
) {
1190 act
->action
= SCP_SINK_RETRY
;
1191 if (!head
->matched_something
) {
1192 tell_user(stderr
, "pscp: wildcard '%s' matched "
1193 "no files", head
->wildcard
);
1196 sfree(head
->wildcard
);
1199 act
->action
= SCP_SINK_ENDDIR
;
1202 sfree(head
->dirpath
);
1204 scp_sftp_dirstack_head
= head
->next
;
1212 * Now we have a filename. Stat it, and see if it's a file
1215 sftp_register(req
= fxp_stat_send(fname
));
1216 rreq
= sftp_find_request(pktin
= sftp_recv());
1217 assert(rreq
== req
);
1218 ret
= fxp_stat_recv(pktin
, rreq
, &attrs
);
1220 if (!ret
|| !(attrs
.flags
& SSH_FILEXFER_ATTR_PERMISSIONS
)) {
1221 tell_user(stderr
, "unable to identify %s: %s", fname
,
1222 ret ?
"file type not supplied" : fxp_error());
1227 if (attrs
.permissions
& 0040000) {
1228 struct scp_sftp_dirstack
*newitem
;
1229 struct fxp_handle
*dirhandle
;
1230 int nnames
, namesize
;
1231 struct fxp_name
*ournames
;
1232 struct fxp_names
*names
;
1235 * It's a directory. If we're not in recursive mode,
1236 * this merits a complaint (which is fatal if the name
1237 * was specified directly, but not if it was matched by
1240 * We skip this complaint completely if
1241 * scp_sftp_wildcard is set, because that's an
1242 * indication that we're not actually supposed to
1243 * _recursively_ transfer the dir, just scan it for
1244 * things matching the wildcard.
1246 if (!scp_sftp_recursive
&& !scp_sftp_wildcard
) {
1247 tell_user(stderr
, "pscp: %s: is a directory", fname
);
1249 if (must_free_fname
) sfree(fname
);
1250 if (scp_sftp_dirstack_head
) {
1251 act
->action
= SCP_SINK_RETRY
;
1259 * Otherwise, the fun begins. We must fxp_opendir() the
1260 * directory, slurp the filenames into memory, return
1261 * SCP_SINK_DIR (unless this is a wildcard match), and
1262 * set targetisdir. The next time we're called, we will
1263 * run through the list of filenames one by one,
1264 * matching them against a wildcard if present.
1266 * If targetisdir is _already_ set (meaning we're
1267 * already in the middle of going through another such
1268 * list), we must push the other (target,namelist) pair
1271 sftp_register(req
= fxp_opendir_send(fname
));
1272 rreq
= sftp_find_request(pktin
= sftp_recv());
1273 assert(rreq
== req
);
1274 dirhandle
= fxp_opendir_recv(pktin
, rreq
);
1277 tell_user(stderr
, "scp: unable to open directory %s: %s",
1278 fname
, fxp_error());
1279 if (must_free_fname
) sfree(fname
);
1283 nnames
= namesize
= 0;
1288 sftp_register(req
= fxp_readdir_send(dirhandle
));
1289 rreq
= sftp_find_request(pktin
= sftp_recv());
1290 assert(rreq
== req
);
1291 names
= fxp_readdir_recv(pktin
, rreq
);
1293 if (names
== NULL
) {
1294 if (fxp_error_type() == SSH_FX_EOF
)
1296 tell_user(stderr
, "scp: reading directory %s: %s\n",
1297 fname
, fxp_error());
1298 if (must_free_fname
) sfree(fname
);
1303 if (names
->nnames
== 0) {
1304 fxp_free_names(names
);
1307 if (nnames
+ names
->nnames
>= namesize
) {
1308 namesize
+= names
->nnames
+ 128;
1309 ournames
= sresize(ournames
, namesize
, struct fxp_name
);
1311 for (i
= 0; i
< names
->nnames
; i
++) {
1312 if (!strcmp(names
->names
[i
].filename
, ".") ||
1313 !strcmp(names
->names
[i
].filename
, "..")) {
1315 * . and .. are normal consequences of
1316 * reading a directory, and aren't worth
1317 * complaining about.
1319 } else if (!vet_filename(names
->names
[i
].filename
)) {
1320 tell_user(stderr
, "ignoring potentially dangerous server-"
1321 "supplied filename '%s'\n",
1322 names
->names
[i
].filename
);
1324 ournames
[nnames
++] = names
->names
[i
];
1326 names
->nnames
= 0; /* prevent free_names */
1327 fxp_free_names(names
);
1329 sftp_register(req
= fxp_close_send(dirhandle
));
1330 rreq
= sftp_find_request(pktin
= sftp_recv());
1331 assert(rreq
== req
);
1332 fxp_close_recv(pktin
, rreq
);
1334 newitem
= snew(struct scp_sftp_dirstack
);
1335 newitem
->next
= scp_sftp_dirstack_head
;
1336 newitem
->names
= ournames
;
1337 newitem
->namepos
= 0;
1338 newitem
->namelen
= nnames
;
1339 if (must_free_fname
)
1340 newitem
->dirpath
= fname
;
1342 newitem
->dirpath
= dupstr(fname
);
1343 if (scp_sftp_wildcard
) {
1344 newitem
->wildcard
= scp_sftp_wildcard
;
1345 newitem
->matched_something
= 0;
1346 scp_sftp_wildcard
= NULL
;
1348 newitem
->wildcard
= NULL
;
1350 scp_sftp_dirstack_head
= newitem
;
1352 if (newitem
->wildcard
) {
1353 act
->action
= SCP_SINK_RETRY
;
1355 act
->action
= SCP_SINK_DIR
;
1356 act
->buf
= dupstr(stripslashes(fname
, 0));
1357 act
->name
= act
->buf
;
1358 act
->size
= uint64_make(0,0); /* duhh, it's a directory */
1359 act
->mode
= 07777 & attrs
.permissions
;
1360 if (scp_sftp_preserve
&&
1361 (attrs
.flags
& SSH_FILEXFER_ATTR_ACMODTIME
)) {
1362 act
->atime
= attrs
.atime
;
1363 act
->mtime
= attrs
.mtime
;
1372 * It's a file. Return SCP_SINK_FILE.
1374 act
->action
= SCP_SINK_FILE
;
1375 act
->buf
= dupstr(stripslashes(fname
, 0));
1376 act
->name
= act
->buf
;
1377 if (attrs
.flags
& SSH_FILEXFER_ATTR_SIZE
) {
1378 act
->size
= attrs
.size
;
1380 act
->size
= uint64_make(ULONG_MAX
,ULONG_MAX
); /* no idea */
1381 act
->mode
= 07777 & attrs
.permissions
;
1382 if (scp_sftp_preserve
&&
1383 (attrs
.flags
& SSH_FILEXFER_ATTR_ACMODTIME
)) {
1384 act
->atime
= attrs
.atime
;
1385 act
->mtime
= attrs
.mtime
;
1389 if (must_free_fname
)
1390 scp_sftp_currentname
= fname
;
1392 scp_sftp_currentname
= dupstr(fname
);
1407 if (ssh_scp_recv((unsigned char *) &ch
, 1) <= 0)
1410 bump("Protocol error: Unexpected newline");
1414 if (ssh_scp_recv((unsigned char *) &ch
, 1) <= 0)
1415 bump("Lost connection");
1418 act
->buf
= sresize(act
->buf
, bufsize
, char);
1421 } while (ch
!= '\n');
1422 act
->buf
[i
- 1] = '\0';
1424 case '\01': /* error */
1425 tell_user(stderr
, "%s\n", act
->buf
);
1427 continue; /* go round again */
1428 case '\02': /* fatal error */
1429 bump("%s", act
->buf
);
1431 back
->send(backhandle
, "", 1);
1432 act
->action
= SCP_SINK_ENDDIR
;
1435 if (sscanf(act
->buf
, "%ld %*d %ld %*d",
1436 &act
->mtime
, &act
->atime
) == 2) {
1438 back
->send(backhandle
, "", 1);
1439 continue; /* go round again */
1441 bump("Protocol error: Illegal time format");
1444 act
->action
= (action
== 'C' ? SCP_SINK_FILE
: SCP_SINK_DIR
);
1447 bump("Protocol error: Expected control record");
1450 * We will go round this loop only once, unless we hit
1457 * If we get here, we must have seen SCP_SINK_FILE or
1463 if (sscanf(act
->buf
, "%o %s %n", &act
->mode
, sizestr
, &i
) != 2)
1464 bump("Protocol error: Illegal file descriptor format");
1465 act
->size
= uint64_from_decimal(sizestr
);
1466 act
->name
= act
->buf
+ i
;
1472 int scp_accept_filexfer(void)
1475 struct sftp_packet
*pktin
;
1476 struct sftp_request
*req
, *rreq
;
1478 sftp_register(req
= fxp_open_send(scp_sftp_currentname
, SSH_FXF_READ
));
1479 rreq
= sftp_find_request(pktin
= sftp_recv());
1480 assert(rreq
== req
);
1481 scp_sftp_filehandle
= fxp_open_recv(pktin
, rreq
);
1483 if (!scp_sftp_filehandle
) {
1484 tell_user(stderr
, "pscp: unable to open %s: %s",
1485 scp_sftp_currentname
, fxp_error());
1489 scp_sftp_fileoffset
= uint64_make(0, 0);
1490 scp_sftp_xfer
= xfer_download_init(scp_sftp_filehandle
,
1491 scp_sftp_fileoffset
);
1492 sfree(scp_sftp_currentname
);
1495 back
->send(backhandle
, "", 1);
1496 return 0; /* can't fail */
1500 int scp_recv_filedata(char *data
, int len
)
1503 struct sftp_packet
*pktin
;
1507 xfer_download_queue(scp_sftp_xfer
);
1508 pktin
= sftp_recv();
1509 ret
= xfer_download_gotpkt(scp_sftp_xfer
, pktin
);
1512 tell_user(stderr
, "pscp: error while reading: %s", fxp_error());
1517 if (xfer_download_data(scp_sftp_xfer
, &vbuf
, &actuallen
)) {
1519 * This assertion relies on the fact that the natural
1520 * block size used in the xfer manager is at most that
1521 * used in this module. I don't like crossing layers in
1522 * this way, but it'll do for now.
1524 assert(actuallen
<= len
);
1525 memcpy(data
, vbuf
, actuallen
);
1530 scp_sftp_fileoffset
= uint64_add32(scp_sftp_fileoffset
, actuallen
);
1534 return ssh_scp_recv((unsigned char *) data
, len
);
1538 int scp_finish_filerecv(void)
1541 struct sftp_packet
*pktin
;
1542 struct sftp_request
*req
, *rreq
;
1545 * Ensure that xfer_done() will work correctly, so we can
1546 * clean up any outstanding requests from the file
1549 xfer_set_error(scp_sftp_xfer
);
1550 while (!xfer_done(scp_sftp_xfer
)) {
1554 pktin
= sftp_recv();
1555 xfer_download_gotpkt(scp_sftp_xfer
, pktin
);
1556 if (xfer_download_data(scp_sftp_xfer
, &vbuf
, &len
))
1559 xfer_cleanup(scp_sftp_xfer
);
1561 sftp_register(req
= fxp_close_send(scp_sftp_filehandle
));
1562 rreq
= sftp_find_request(pktin
= sftp_recv());
1563 assert(rreq
== req
);
1564 fxp_close_recv(pktin
, rreq
);
1567 back
->send(backhandle
, "", 1);
1572 /* ----------------------------------------------------------------------
1573 * Send an error message to the other side and to the screen.
1574 * Increment error counter.
1576 static void run_err(const char *fmt
, ...)
1582 str
= dupvprintf(fmt
, ap
);
1583 str2
= dupcat("scp: ", str
, "\n", NULL
);
1585 scp_send_errmsg(str2
);
1586 tell_user(stderr
, "%s", str2
);
1592 * Execute the source part of the SCP protocol.
1594 static void source(char *src
)
1597 unsigned long mtime
, atime
;
1603 time_t stat_starttime
, stat_lasttime
;
1605 attr
= file_type(src
);
1606 if (attr
== FILE_TYPE_NONEXISTENT
||
1607 attr
== FILE_TYPE_WEIRD
) {
1608 run_err("%s: %s file or directory", src
,
1609 (attr
== FILE_TYPE_WEIRD ?
"Not a" : "No such"));
1613 if (attr
== FILE_TYPE_DIRECTORY
) {
1616 * Avoid . and .. directories.
1619 p
= strrchr(src
, '/');
1621 p
= strrchr(src
, '\\');
1626 if (!strcmp(p
, ".") || !strcmp(p
, ".."))
1627 /* skip . and .. */ ;
1631 run_err("%s: not a regular file", src
);
1636 if ((last
= strrchr(src
, '/')) == NULL
)
1640 if (strrchr(last
, '\\') != NULL
)
1641 last
= strrchr(last
, '\\') + 1;
1642 if (last
== src
&& strchr(src
, ':') != NULL
)
1643 last
= strchr(src
, ':') + 1;
1645 f
= open_existing_file(src
, &size
, &mtime
, &atime
);
1647 run_err("%s: Cannot open file", src
);
1651 if (scp_send_filetimes(mtime
, atime
))
1657 uint64_decimal(size
, sizestr
);
1658 tell_user(stderr
, "Sending file %s, size=%s", last
, sizestr
);
1660 if (scp_send_filename(last
, size
, 0644))
1663 stat_bytes
= uint64_make(0,0);
1664 stat_starttime
= time(NULL
);
1667 for (i
= uint64_make(0,0);
1668 uint64_compare(i
,size
) < 0;
1669 i
= uint64_add32(i
,4096)) {
1670 char transbuf
[4096];
1673 if (uint64_compare(uint64_add32(i
, k
),size
) > 0) /* i + k > size */
1674 k
= (uint64_subtract(size
, i
)).lo
; /* k = size - i; */
1675 if ((j
= read_from_file(f
, transbuf
, k
)) != k
) {
1678 bump("%s: Read error", src
);
1680 if (scp_send_filedata(transbuf
, k
))
1681 bump("%s: Network error occurred", src
);
1684 stat_bytes
= uint64_add32(stat_bytes
, k
);
1685 if (time(NULL
) != stat_lasttime
||
1686 (uint64_compare(uint64_add32(i
, k
), size
) == 0)) {
1687 stat_lasttime
= time(NULL
);
1688 print_stats(last
, size
, stat_bytes
,
1689 stat_starttime
, stat_lasttime
);
1696 (void) scp_send_finish();
1700 * Recursively send the contents of a directory.
1702 static void rsource(char *src
)
1708 if ((last
= strrchr(src
, '/')) == NULL
)
1712 if (strrchr(last
, '\\') != NULL
)
1713 last
= strrchr(last
, '\\') + 1;
1714 if (last
== src
&& strchr(src
, ':') != NULL
)
1715 last
= strchr(src
, ':') + 1;
1717 /* maybe send filetime */
1719 save_target
= scp_save_remotepath();
1722 tell_user(stderr
, "Entering directory: %s", last
);
1723 if (scp_send_dirname(last
, 0755))
1726 dir
= open_directory(src
);
1729 while ((filename
= read_filename(dir
)) != NULL
) {
1730 char *foundfile
= dupcat(src
, "/", filename
, NULL
);
1736 close_directory(dir
);
1738 (void) scp_send_enddir();
1740 scp_restore_remotepath(save_target
);
1744 * Execute the sink part of the SCP protocol.
1746 static void sink(char *targ
, char *src
)
1756 time_t stat_starttime
, stat_lasttime
;
1759 attr
= file_type(targ
);
1760 if (attr
== FILE_TYPE_DIRECTORY
)
1763 if (targetshouldbedirectory
&& !targisdir
)
1764 bump("%s: Not a directory", targ
);
1768 struct scp_sink_action act
;
1769 if (scp_get_sink_action(&act
))
1772 if (act
.action
== SCP_SINK_ENDDIR
)
1775 if (act
.action
== SCP_SINK_RETRY
)
1780 * Prevent the remote side from maliciously writing to
1781 * files outside the target area by sending a filename
1782 * containing `../'. In fact, it shouldn't be sending
1783 * filenames with any slashes or colons in at all; so
1784 * we'll find the last slash, backslash or colon in the
1785 * filename and use only the part after that. (And
1788 * In addition, we also ensure here that if we're
1789 * copying a single file and the target is a directory
1790 * (common usage: `pscp host:filename .') the remote
1791 * can't send us a _different_ file name. We can
1792 * distinguish this case because `src' will be non-NULL
1793 * and the last component of that will fail to match
1794 * (the last component of) the name sent.
1796 * Well, not always; if `src' is a wildcard, we do
1797 * expect to get back filenames that don't correspond
1798 * exactly to it. Ideally in this case, we would like
1799 * to ensure that the returned filename actually
1800 * matches the wildcard pattern - but one of SCP's
1801 * protocol infelicities is that wildcard matching is
1802 * done at the server end _by the server's rules_ and
1803 * so in general this is infeasible. Hence, we only
1804 * accept filenames that don't correspond to `src' if
1805 * unsafe mode is enabled or we are using SFTP (which
1806 * resolves remote wildcards on the client side and can
1809 char *striptarget
, *stripsrc
;
1811 striptarget
= stripslashes(act
.name
, 1);
1812 if (striptarget
!= act
.name
) {
1813 tell_user(stderr
, "warning: remote host sent a compound"
1814 " pathname '%s'", act
.name
);
1815 tell_user(stderr
, " renaming local file to '%s'",
1820 * Also check to see if the target filename is '.' or
1821 * '..', or indeed '...' and so on because Windows
1822 * appears to interpret those like '..'.
1824 if (is_dots(striptarget
)) {
1825 bump("security violation: remote host attempted to write to"
1826 " a '.' or '..' path!");
1830 stripsrc
= stripslashes(src
, 1);
1831 if (strcmp(striptarget
, stripsrc
) &&
1832 !using_sftp
&& !scp_unsafe_mode
) {
1833 tell_user(stderr
, "warning: remote host tried to write "
1834 "to a file called '%s'", striptarget
);
1835 tell_user(stderr
, " when we requested a file "
1836 "called '%s'.", stripsrc
);
1837 tell_user(stderr
, " If this is a wildcard, "
1838 "consider upgrading to SSH-2 or using");
1839 tell_user(stderr
, " the '-unsafe' option. Renaming"
1840 " of this file has been disallowed.");
1841 /* Override the name the server provided with our own. */
1842 striptarget
= stripsrc
;
1846 if (targ
[0] != '\0')
1847 destfname
= dir_file_cat(targ
, striptarget
);
1849 destfname
= dupstr(striptarget
);
1852 * In this branch of the if, the target area is a
1853 * single file with an explicitly specified name in any
1854 * case, so there's no danger.
1856 destfname
= dupstr(targ
);
1858 attr
= file_type(destfname
);
1859 exists
= (attr
!= FILE_TYPE_NONEXISTENT
);
1861 if (act
.action
== SCP_SINK_DIR
) {
1862 if (exists
&& attr
!= FILE_TYPE_DIRECTORY
) {
1863 run_err("%s: Not a directory", destfname
);
1867 if (!create_directory(destfname
)) {
1868 run_err("%s: Cannot create directory", destfname
);
1872 sink(destfname
, NULL
);
1873 /* can we set the timestamp for directories ? */
1877 f
= open_new_file(destfname
);
1879 run_err("%s: Cannot create file", destfname
);
1883 if (scp_accept_filexfer())
1886 stat_bytes
= uint64_make(0, 0);
1887 stat_starttime
= time(NULL
);
1889 stat_name
= stripslashes(destfname
, 1);
1891 received
= uint64_make(0, 0);
1892 while (uint64_compare(received
,act
.size
) < 0) {
1893 char transbuf
[32768];
1896 blksize
= uint64_make(0, 32768);
1897 if (uint64_compare(blksize
,uint64_subtract(act
.size
,received
)) > 0)
1898 blksize
= uint64_subtract(act
.size
,received
);
1899 read
= scp_recv_filedata(transbuf
, (int)blksize
.lo
);
1901 bump("Lost connection");
1904 if (write_to_file(f
, transbuf
, read
) != (int)read
) {
1906 /* FIXME: in sftp we can actually abort the transfer */
1908 printf("\r%-25.25s | %50s\n",
1910 "Write error.. waiting for end of file");
1914 stat_bytes
= uint64_add32(stat_bytes
,read
);
1915 if (time(NULL
) > stat_lasttime
||
1916 uint64_compare(uint64_add32(received
, read
), act
.size
) == 0) {
1917 stat_lasttime
= time(NULL
);
1918 print_stats(stat_name
, act
.size
, stat_bytes
,
1919 stat_starttime
, stat_lasttime
);
1922 received
= uint64_add32(received
, read
);
1925 set_file_times(f
, act
.mtime
, act
.atime
);
1930 run_err("%s: Write error", destfname
);
1933 (void) scp_finish_filerecv();
1940 * We will copy local files to a remote server.
1942 static void toremote(int argc
, char *argv
[])
1944 char *src
, *targ
, *host
, *user
;
1948 targ
= argv
[argc
- 1];
1950 /* Separate host from filename */
1954 bump("targ == NULL in toremote()");
1958 /* Substitute "." for empty target */
1960 /* Separate host and username */
1962 host
= strrchr(host
, '@');
1973 if (colon(argv
[0]) != NULL
)
1974 bump("%s: Remote to remote not supported", argv
[0]);
1976 wc_type
= test_wildcard(argv
[0], 1);
1977 if (wc_type
== WCTYPE_NONEXISTENT
)
1978 bump("%s: No such file or directory\n", argv
[0]);
1979 else if (wc_type
== WCTYPE_WILDCARD
)
1980 targetshouldbedirectory
= 1;
1983 cmd
= dupprintf("scp%s%s%s%s -t %s",
1984 verbose ?
" -v" : "",
1985 recursive ?
" -r" : "",
1986 preserve ?
" -p" : "",
1987 targetshouldbedirectory ?
" -d" : "", targ
);
1988 do_cmd(host
, user
, cmd
);
1991 if (scp_source_setup(targ
, targetshouldbedirectory
))
1994 for (i
= 0; i
< argc
- 1; i
++) {
1996 if (colon(src
) != NULL
) {
1997 tell_user(stderr
, "%s: Remote to remote not supported\n", src
);
2002 wc_type
= test_wildcard(src
, 1);
2003 if (wc_type
== WCTYPE_NONEXISTENT
) {
2004 run_err("%s: No such file or directory", src
);
2006 } else if (wc_type
== WCTYPE_FILENAME
) {
2010 WildcardMatcher
*wc
;
2013 wc
= begin_wildcard_matching(src
);
2015 run_err("%s: No such file or directory", src
);
2019 while ((filename
= wildcard_get_filename(wc
)) != NULL
) {
2024 finish_wildcard_matching(wc
);
2030 * We will copy files from a remote server to the local machine.
2032 static void tolocal(int argc
, char *argv
[])
2034 char *src
, *targ
, *host
, *user
;
2038 bump("More than one remote source not supported");
2043 /* Separate host from filename */
2047 bump("Local to local copy not supported");
2051 /* Substitute "." for empty filename */
2053 /* Separate username and hostname */
2055 host
= strrchr(host
, '@');
2065 cmd
= dupprintf("scp%s%s%s%s -f %s",
2066 verbose ?
" -v" : "",
2067 recursive ?
" -r" : "",
2068 preserve ?
" -p" : "",
2069 targetshouldbedirectory ?
" -d" : "", src
);
2070 do_cmd(host
, user
, cmd
);
2073 if (scp_sink_setup(src
, preserve
, recursive
))
2080 * We will issue a list command to get a remote directory.
2082 static void get_dir_list(int argc
, char *argv
[])
2084 char *src
, *host
, *user
;
2090 /* Separate host from filename */
2094 bump("Local to local copy not supported");
2098 /* Substitute "." for empty filename */
2100 /* Separate username and hostname */
2102 host
= strrchr(host
, '@');
2112 cmd
= snewn(4 * strlen(src
) + 100, char);
2113 strcpy(cmd
, "ls -la '");
2114 p
= cmd
+ strlen(cmd
);
2115 for (q
= src
; *q
; q
++) {
2128 do_cmd(host
, user
, cmd
);
2132 scp_sftp_listdir(src
);
2134 while (ssh_scp_recv((unsigned char *) &c
, 1) > 0)
2135 tell_char(stdout
, c
);
2140 * Short description of parameters.
2142 static void usage(void)
2144 printf("PuTTY Secure Copy client\n");
2145 printf("%s\n", ver
);
2146 printf("Usage: pscp [options] [user@]host:source target\n");
2148 (" pscp [options] source [source...] [user@]host:target\n");
2149 printf(" pscp [options] -ls [user@]host:filespec\n");
2150 printf("Options:\n");
2151 printf(" -V print version information and exit\n");
2152 printf(" -pgpfp print PGP key fingerprints and exit\n");
2153 printf(" -p preserve file attributes\n");
2154 printf(" -q quiet, don't show statistics\n");
2155 printf(" -r copy directories recursively\n");
2156 printf(" -v show verbose messages\n");
2157 printf(" -load sessname Load settings from saved session\n");
2158 printf(" -P port connect to specified port\n");
2159 printf(" -l user connect with specified username\n");
2160 printf(" -pw passw login with specified password\n");
2161 printf(" -1 -2 force use of particular SSH protocol version\n");
2162 printf(" -4 -6 force use of IPv4 or IPv6\n");
2163 printf(" -C enable compression\n");
2164 printf(" -i key private key file for authentication\n");
2165 printf(" -noagent disable use of Pageant\n");
2166 printf(" -agent enable use of Pageant\n");
2167 printf(" -batch disable all interactive prompts\n");
2168 printf(" -unsafe allow server-side wildcards (DANGEROUS)\n");
2169 printf(" -sftp force use of SFTP protocol\n");
2170 printf(" -scp force use of SCP protocol\n");
2173 * -gui is an internal option, used by GUI front ends to get
2174 * pscp to pass progress reports back to them. It's not an
2175 * ordinary user-accessible option, so it shouldn't be part of
2176 * the command-line help. The only people who need to know
2177 * about it are programmers, and they can read the source.
2180 (" -gui hWnd GUI mode with the windows handle for receiving messages\n");
2187 printf("pscp: %s\n", ver
);
2191 void cmdline_error(char *p
, ...)
2194 fprintf(stderr
, "pscp: ");
2196 vfprintf(stderr
, p
, ap
);
2198 fprintf(stderr
, "\n try typing just \"pscp\" for help\n");
2203 * Main program. (Called `psftp_main' because it gets called from
2204 * *sftp.c; bit silly, I know, but it had to be called _something_.)
2206 int psftp_main(int argc
, char *argv
[])
2210 default_protocol
= PROT_TELNET
;
2213 #ifdef FLAG_SYNCAGENT
2217 cmdline_tooltype
= TOOLTYPE_FILETRANSFER
;
2220 /* Load Default Settings before doing anything else. */
2221 do_defaults(NULL
, &cfg
);
2222 loaded_session
= FALSE
;
2224 for (i
= 1; i
< argc
; i
++) {
2226 if (argv
[i
][0] != '-')
2228 ret
= cmdline_process_param(argv
[i
], i
+1<argc?argv
[i
+1]:NULL
, 1, &cfg
);
2230 cmdline_error("option \"%s\" requires an argument", argv
[i
]);
2231 } else if (ret
== 2) {
2232 i
++; /* skip next argument */
2233 } else if (ret
== 1) {
2234 /* We have our own verbosity in addition to `flags'. */
2235 if (flags
& FLAG_VERBOSE
)
2237 } else if (strcmp(argv
[i
], "-pgpfp") == 0) {
2240 } else if (strcmp(argv
[i
], "-r") == 0) {
2242 } else if (strcmp(argv
[i
], "-p") == 0) {
2244 } else if (strcmp(argv
[i
], "-q") == 0) {
2246 } else if (strcmp(argv
[i
], "-h") == 0 || strcmp(argv
[i
], "-?") == 0) {
2248 } else if (strcmp(argv
[i
], "-V") == 0) {
2250 } else if (strcmp(argv
[i
], "-ls") == 0) {
2252 } else if (strcmp(argv
[i
], "-batch") == 0) {
2253 console_batch_mode
= 1;
2254 } else if (strcmp(argv
[i
], "-unsafe") == 0) {
2255 scp_unsafe_mode
= 1;
2256 } else if (strcmp(argv
[i
], "-sftp") == 0) {
2257 try_scp
= 0; try_sftp
= 1;
2258 } else if (strcmp(argv
[i
], "-scp") == 0) {
2259 try_scp
= 1; try_sftp
= 0;
2260 } else if (strcmp(argv
[i
], "--") == 0) {
2264 cmdline_error("unknown option \"%s\"", argv
[i
]);
2274 get_dir_list(argc
, argv
);
2281 targetshouldbedirectory
= 1;
2283 if (colon(argv
[argc
- 1]) != NULL
)
2284 toremote(argc
, argv
);
2286 tolocal(argc
, argv
);
2289 if (back
!= NULL
&& back
->connected(backhandle
)) {
2291 back
->special(backhandle
, TS_EOF
);
2292 ssh_scp_recv((unsigned char *) &ch
, 1);
2297 console_provide_logctx(NULL
);
2298 back
->free(backhandle
);
2302 return (errs
== 0 ?
0 : 1);