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
);
53 const char *const appname
= "PSCP";
56 * The maximum amount of queued data we accept before we stop and
57 * wait for the server to process some.
59 #define MAX_SCP_BUFSIZE 16384
61 void ldisc_send(void *handle
, char *buf
, int len
, int interactive
)
64 * This is only here because of the calls to ldisc_send(NULL,
65 * 0) in ssh.c. Nothing in PSCP actually needs to use the ldisc
66 * as an ldisc. So if we get called with any real data, I want
72 static void tell_char(FILE * stream
, char c
)
77 static void tell_str(FILE * stream
, char *str
)
81 for (i
= 0; i
< strlen(str
); ++i
)
82 tell_char(stream
, str
[i
]);
85 static void tell_user(FILE * stream
, char *fmt
, ...)
90 str
= dupvprintf(fmt
, ap
);
92 str2
= dupcat(str
, "\n", NULL
);
94 tell_str(stream
, str2
);
99 * Print an error message and perform a fatal exit.
101 void fatalbox(char *fmt
, ...)
106 str
= dupvprintf(fmt
, ap
);
107 str2
= dupcat("Fatal: ", str
, "\n", NULL
);
110 tell_str(stderr
, str2
);
116 void modalfatalbox(char *fmt
, ...)
121 str
= dupvprintf(fmt
, ap
);
122 str2
= dupcat("Fatal: ", str
, "\n", NULL
);
125 tell_str(stderr
, str2
);
131 void connection_fatal(void *frontend
, char *fmt
, ...)
136 str
= dupvprintf(fmt
, ap
);
137 str2
= dupcat("Fatal: ", str
, "\n", NULL
);
140 tell_str(stderr
, str2
);
148 * In pscp, all agent requests should be synchronous, so this is a
151 void agent_schedule_callback(void (*callback
)(void *, void *, int),
152 void *callback_ctx
, void *data
, int len
)
154 assert(!"We shouldn't be here");
158 * Receive a block of data from the SSH link. Block until all data
161 * To do this, we repeatedly call the SSH protocol module, with our
162 * own trap in from_backend() to catch the data that comes back. We
163 * do this until we have enough data.
166 static unsigned char *outptr
; /* where to put the data */
167 static unsigned outlen
; /* how much data required */
168 static unsigned char *pending
= NULL
; /* any spare data */
169 static unsigned pendlen
= 0, pendsize
= 0; /* length and phys. size of buffer */
170 int from_backend(void *frontend
, int is_stderr
, const char *data
, int datalen
)
172 unsigned char *p
= (unsigned char *) data
;
173 unsigned len
= (unsigned) datalen
;
176 * stderr data is just spouted to local stderr and otherwise
181 fwrite(data
, 1, len
, stderr
);
185 if ((outlen
> 0) && (len
> 0)) {
186 unsigned used
= outlen
;
189 memcpy(outptr
, p
, used
);
197 if (pendsize
< pendlen
+ len
) {
198 pendsize
= pendlen
+ len
+ 4096;
199 pending
= sresize(pending
, pendsize
, unsigned char);
201 memcpy(pending
+ pendlen
, p
, len
);
207 int from_backend_untrusted(void *frontend_handle
, const char *data
, int len
)
210 * No "untrusted" output should get here (the way the code is
211 * currently, it's all diverted by FLAG_STDERR).
213 assert(!"Unexpected call to from_backend_untrusted()");
214 return 0; /* not reached */
216 static int ssh_scp_recv(unsigned char *buf
, int len
)
222 * See if the pending-input block contains some of what we
226 unsigned pendused
= pendlen
;
227 if (pendused
> outlen
)
229 memcpy(outptr
, pending
, pendused
);
230 memmove(pending
, pending
+ pendused
, pendlen
- pendused
);
244 if (back
->exitcode(backhandle
) >= 0 || ssh_sftp_loop_iteration() < 0)
252 * Loop through the ssh connection and authentication process.
254 static void ssh_scp_init(void)
256 while (!back
->sendok(backhandle
)) {
257 if (back
->exitcode(backhandle
) >= 0) {
261 if (ssh_sftp_loop_iteration() < 0) {
267 /* Work out which backend we ended up using. */
268 if (!ssh_fallback_cmd(backhandle
))
269 using_sftp
= main_cmd_is_sftp
;
271 using_sftp
= fallback_cmd_is_sftp
;
275 tell_user(stderr
, "Using SFTP");
277 tell_user(stderr
, "Using SCP1");
282 * Print an error message and exit after closing the SSH link.
284 static void bump(char *fmt
, ...)
289 str
= dupvprintf(fmt
, ap
);
291 str2
= dupcat(str
, "\n", NULL
);
293 tell_str(stderr
, str2
);
297 if (back
!= NULL
&& back
->connected(backhandle
)) {
299 back
->special(backhandle
, TS_EOF
);
300 ssh_scp_recv((unsigned char *) &ch
, 1);
307 * Open an SSH connection to user@host and execute cmd.
309 static void do_cmd(char *host
, char *user
, char *cmd
)
315 if (host
== NULL
|| host
[0] == '\0')
316 bump("Empty host name");
319 * Remove fiddly bits of address: remove a colon suffix, and
320 * the square brackets around an IPv6 literal address.
322 if (host
[0] == '[') {
324 host
[strcspn(host
, "]")] = '\0';
326 host
[strcspn(host
, ":")] = '\0';
330 * If we haven't loaded session details already (e.g., from -load),
331 * try looking for a session called "host".
333 if (!loaded_session
) {
334 /* Try to load settings for `host' into a temporary config */
337 do_defaults(host
, &cfg2
);
338 if (cfg2
.host
[0] != '\0') {
339 /* Settings present and include hostname */
340 /* Re-load data into the real config. */
341 do_defaults(host
, &cfg
);
343 /* Session doesn't exist or mention a hostname. */
344 /* Use `host' as a bare hostname. */
345 strncpy(cfg
.host
, host
, sizeof(cfg
.host
) - 1);
346 cfg
.host
[sizeof(cfg
.host
) - 1] = '\0';
349 /* Patch in hostname `host' to session details. */
350 strncpy(cfg
.host
, host
, sizeof(cfg
.host
) - 1);
351 cfg
.host
[sizeof(cfg
.host
) - 1] = '\0';
355 * Force use of SSH. (If they got the protocol wrong we assume the
356 * port is useless too.)
358 if (cfg
.protocol
!= PROT_SSH
) {
359 cfg
.protocol
= PROT_SSH
;
364 * Enact command-line overrides.
366 cmdline_run_saved(&cfg
);
369 * Trim leading whitespace off the hostname if it's there.
372 int space
= strspn(cfg
.host
, " \t");
373 memmove(cfg
.host
, cfg
.host
+space
, 1+strlen(cfg
.host
)-space
);
376 /* See if host is of the form user@host */
377 if (cfg
.host
[0] != '\0') {
378 char *atsign
= strrchr(cfg
.host
, '@');
379 /* Make sure we're not overflowing the user field */
381 if (atsign
- cfg
.host
< sizeof cfg
.username
) {
382 strncpy(cfg
.username
, cfg
.host
, atsign
- cfg
.host
);
383 cfg
.username
[atsign
- cfg
.host
] = '\0';
385 memmove(cfg
.host
, atsign
+ 1, 1 + strlen(atsign
+ 1));
390 * Remove any remaining whitespace from the hostname.
394 while (cfg
.host
[p2
] != '\0') {
395 if (cfg
.host
[p2
] != ' ' && cfg
.host
[p2
] != '\t') {
396 cfg
.host
[p1
] = cfg
.host
[p2
];
405 if (user
!= NULL
&& user
[0] != '\0') {
406 strncpy(cfg
.username
, user
, sizeof(cfg
.username
) - 1);
407 cfg
.username
[sizeof(cfg
.username
) - 1] = '\0';
408 } else if (cfg
.username
[0] == '\0') {
409 user
= get_username();
411 bump("Empty user name");
414 tell_user(stderr
, "Guessing user name: %s", user
);
415 strncpy(cfg
.username
, user
, sizeof(cfg
.username
) - 1);
416 cfg
.username
[sizeof(cfg
.username
) - 1] = '\0';
422 * Disable scary things which shouldn't be enabled for simple
423 * things like SCP and SFTP: agent forwarding, port forwarding,
428 cfg
.portfwd
[0] = cfg
.portfwd
[1] = '\0';
429 cfg
.ssh_simple
= TRUE
;
432 * Set up main and possibly fallback command depending on
433 * options specified by user.
434 * Attempt to start the SFTP subsystem as a first choice,
435 * falling back to the provided scp command if that fails.
437 cfg
.remote_cmd_ptr2
= NULL
;
439 /* First choice is SFTP subsystem. */
440 main_cmd_is_sftp
= 1;
441 strcpy(cfg
.remote_cmd
, "sftp");
442 cfg
.ssh_subsys
= TRUE
;
444 /* Fallback is to use the provided scp command. */
445 fallback_cmd_is_sftp
= 0;
446 cfg
.remote_cmd_ptr2
= cmd
;
447 cfg
.ssh_subsys2
= FALSE
;
449 /* Since we're not going to try SCP, we may as well try
450 * harder to find an SFTP server, since in the current
451 * implementation we have a spare slot. */
452 fallback_cmd_is_sftp
= 1;
453 /* see psftp.c for full explanation of this kludge */
454 cfg
.remote_cmd_ptr2
=
455 "test -x /usr/lib/sftp-server && exec /usr/lib/sftp-server\n"
456 "test -x /usr/local/lib/sftp-server && exec /usr/local/lib/sftp-server\n"
458 cfg
.ssh_subsys2
= FALSE
;
461 /* Don't try SFTP at all; just try the scp command. */
462 main_cmd_is_sftp
= 0;
463 cfg
.remote_cmd_ptr
= cmd
;
464 cfg
.ssh_subsys
= FALSE
;
470 err
= back
->init(NULL
, &backhandle
, &cfg
, cfg
.host
, cfg
.port
, &realhost
,
471 0, cfg
.tcp_keepalives
);
473 bump("ssh_init: %s", err
);
474 logctx
= log_init(NULL
, &cfg
);
475 back
->provide_logctx(backhandle
, logctx
);
476 console_provide_logctx(logctx
);
478 if (verbose
&& realhost
!= NULL
&& errs
== 0)
479 tell_user(stderr
, "Connected to %s\n", realhost
);
484 * Update statistic information about current file.
486 static void print_stats(char *name
, uint64 size
, uint64 done
,
487 time_t start
, time_t now
)
498 elap
= (unsigned long) difftime(now
, start
);
501 ratebs
= (float) (uint64_to_double(done
) / elap
);
503 ratebs
= (float) uint64_to_double(done
);
506 eta
= (unsigned long) (uint64_to_double(uint64_subtract(size
, done
)));
508 eta
= (unsigned long)
509 ((uint64_to_double(uint64_subtract(size
, done
)) / ratebs
));
512 etastr
= dupprintf("%02ld:%02ld:%02ld",
513 eta
/ 3600, (eta
% 3600) / 60, eta
% 60);
515 donedbl
= uint64_to_double(done
);
516 sizedbl
= uint64_to_double(size
);
517 pct
= (int) (100 * (donedbl
* 1.0 / sizedbl
));
521 /* divide by 1024 to provide kB */
522 uint64_decimal(uint64_shift_right(done
, 10), donekb
);
523 len
= printf("\r%-25.25s | %s kB | %5.1f kB/s | ETA: %8s | %3d%%",
525 donekb
, ratebs
/ 1024.0, etastr
, pct
);
526 if (len
< prev_stats_len
)
527 printf("%*s", prev_stats_len
- len
, "");
528 prev_stats_len
= len
;
530 if (uint64_compare(done
, size
) == 0)
540 * Find a colon in str and return a pointer to the colon.
541 * This is used to separate hostname from filename.
543 static char *colon(char *str
)
545 /* We ignore a leading colon, since the hostname cannot be
546 empty. We also ignore a colon as second character because
547 of filenames like f:myfile.txt. */
548 if (str
[0] == '\0' || str
[0] == ':' ||
549 (str
[0] != '[' && str
[1] == ':'))
551 while (*str
!= '\0' && *str
!= ':' && *str
!= '/' && *str
!= '\\') {
553 /* Skip over IPv6 literal addresses
554 * (eg: 'jeroen@[2001:db8::1]:myfile.txt') */
555 char *ipv6_end
= strchr(str
, ']');
569 * Return a pointer to the portion of str that comes after the last
570 * slash (or backslash or colon, if `local' is TRUE).
572 static char *stripslashes(char *str
, int local
)
577 p
= strchr(str
, ':');
581 p
= strrchr(str
, '/');
585 p
= strrchr(str
, '\\');
593 * Determine whether a string is entirely composed of dots.
595 static int is_dots(char *str
)
597 return str
[strspn(str
, ".")] == '\0';
601 * Wait for a response from the other side.
602 * Return 0 if ok, -1 if error.
604 static int response(void)
606 char ch
, resp
, rbuf
[2048];
609 if (ssh_scp_recv((unsigned char *) &resp
, 1) <= 0)
610 bump("Lost connection");
620 case 2: /* fatal error */
622 if (ssh_scp_recv((unsigned char *) &ch
, 1) <= 0)
623 bump("Protocol error: Lost connection");
625 } while (p
< sizeof(rbuf
) && ch
!= '\n');
628 tell_user(stderr
, "%s\n", rbuf
);
636 int sftp_recvdata(char *buf
, int len
)
638 return ssh_scp_recv((unsigned char *) buf
, len
);
640 int sftp_senddata(char *buf
, int len
)
642 back
->send(backhandle
, buf
, len
);
646 /* ----------------------------------------------------------------------
647 * sftp-based replacement for the hacky `pscp -ls'.
649 static int sftp_ls_compare(const void *av
, const void *bv
)
651 const struct fxp_name
*a
= (const struct fxp_name
*) av
;
652 const struct fxp_name
*b
= (const struct fxp_name
*) bv
;
653 return strcmp(a
->filename
, b
->filename
);
655 void scp_sftp_listdir(char *dirname
)
657 struct fxp_handle
*dirh
;
658 struct fxp_names
*names
;
659 struct fxp_name
*ournames
;
660 struct sftp_packet
*pktin
;
661 struct sftp_request
*req
, *rreq
;
662 int nnames
, namesize
;
666 tell_user(stderr
, "unable to initialise SFTP: %s", fxp_error());
671 printf("Listing directory %s\n", dirname
);
673 sftp_register(req
= fxp_opendir_send(dirname
));
674 rreq
= sftp_find_request(pktin
= sftp_recv());
676 dirh
= fxp_opendir_recv(pktin
, rreq
);
679 printf("Unable to open %s: %s\n", dirname
, fxp_error());
681 nnames
= namesize
= 0;
686 sftp_register(req
= fxp_readdir_send(dirh
));
687 rreq
= sftp_find_request(pktin
= sftp_recv());
689 names
= fxp_readdir_recv(pktin
, rreq
);
692 if (fxp_error_type() == SSH_FX_EOF
)
694 printf("Reading directory %s: %s\n", dirname
, fxp_error());
697 if (names
->nnames
== 0) {
698 fxp_free_names(names
);
702 if (nnames
+ names
->nnames
>= namesize
) {
703 namesize
+= names
->nnames
+ 128;
704 ournames
= sresize(ournames
, namesize
, struct fxp_name
);
707 for (i
= 0; i
< names
->nnames
; i
++)
708 ournames
[nnames
++] = names
->names
[i
];
709 names
->nnames
= 0; /* prevent free_names */
710 fxp_free_names(names
);
712 sftp_register(req
= fxp_close_send(dirh
));
713 rreq
= sftp_find_request(pktin
= sftp_recv());
715 fxp_close_recv(pktin
, rreq
);
718 * Now we have our filenames. Sort them by actual file
719 * name, and then output the longname parts.
721 qsort(ournames
, nnames
, sizeof(*ournames
), sftp_ls_compare
);
726 for (i
= 0; i
< nnames
; i
++)
727 printf("%s\n", ournames
[i
].longname
);
731 /* ----------------------------------------------------------------------
732 * Helper routines that contain the actual SCP protocol elements,
733 * implemented both as SCP1 and SFTP.
736 static struct scp_sftp_dirstack
{
737 struct scp_sftp_dirstack
*next
;
738 struct fxp_name
*names
;
739 int namepos
, namelen
;
742 int matched_something
; /* wildcard match set was non-empty */
743 } *scp_sftp_dirstack_head
;
744 static char *scp_sftp_remotepath
, *scp_sftp_currentname
;
745 static char *scp_sftp_wildcard
;
746 static int scp_sftp_targetisdir
, scp_sftp_donethistarget
;
747 static int scp_sftp_preserve
, scp_sftp_recursive
;
748 static unsigned long scp_sftp_mtime
, scp_sftp_atime
;
749 static int scp_has_times
;
750 static struct fxp_handle
*scp_sftp_filehandle
;
751 static struct fxp_xfer
*scp_sftp_xfer
;
752 static uint64 scp_sftp_fileoffset
;
754 int scp_source_setup(char *target
, int shouldbedir
)
758 * Find out whether the target filespec is in fact a
761 struct sftp_packet
*pktin
;
762 struct sftp_request
*req
, *rreq
;
763 struct fxp_attrs attrs
;
767 tell_user(stderr
, "unable to initialise SFTP: %s", fxp_error());
772 sftp_register(req
= fxp_stat_send(target
));
773 rreq
= sftp_find_request(pktin
= sftp_recv());
775 ret
= fxp_stat_recv(pktin
, rreq
, &attrs
);
777 if (!ret
|| !(attrs
.flags
& SSH_FILEXFER_ATTR_PERMISSIONS
))
778 scp_sftp_targetisdir
= 0;
780 scp_sftp_targetisdir
= (attrs
.permissions
& 0040000) != 0;
782 if (shouldbedir
&& !scp_sftp_targetisdir
) {
783 bump("pscp: remote filespec %s: not a directory\n", target
);
786 scp_sftp_remotepath
= dupstr(target
);
795 int scp_send_errmsg(char *str
)
798 /* do nothing; we never need to send our errors to the server */
800 back
->send(backhandle
, "\001", 1);/* scp protocol error prefix */
801 back
->send(backhandle
, str
, strlen(str
));
803 return 0; /* can't fail */
806 int scp_send_filetimes(unsigned long mtime
, unsigned long atime
)
809 scp_sftp_mtime
= mtime
;
810 scp_sftp_atime
= atime
;
815 sprintf(buf
, "T%lu 0 %lu 0\n", mtime
, atime
);
816 back
->send(backhandle
, buf
, strlen(buf
));
821 int scp_send_filename(char *name
, uint64 size
, int modes
)
825 struct sftp_packet
*pktin
;
826 struct sftp_request
*req
, *rreq
;
828 if (scp_sftp_targetisdir
) {
829 fullname
= dupcat(scp_sftp_remotepath
, "/", name
, NULL
);
831 fullname
= dupstr(scp_sftp_remotepath
);
834 sftp_register(req
= fxp_open_send(fullname
, SSH_FXF_WRITE
|
835 SSH_FXF_CREAT
| SSH_FXF_TRUNC
));
836 rreq
= sftp_find_request(pktin
= sftp_recv());
838 scp_sftp_filehandle
= fxp_open_recv(pktin
, rreq
);
840 if (!scp_sftp_filehandle
) {
841 tell_user(stderr
, "pscp: unable to open %s: %s",
842 fullname
, fxp_error());
846 scp_sftp_fileoffset
= uint64_make(0, 0);
847 scp_sftp_xfer
= xfer_upload_init(scp_sftp_filehandle
,
848 scp_sftp_fileoffset
);
854 uint64_decimal(size
, sizestr
);
855 sprintf(buf
, "C%04o %s ", modes
, sizestr
);
856 back
->send(backhandle
, buf
, strlen(buf
));
857 back
->send(backhandle
, name
, strlen(name
));
858 back
->send(backhandle
, "\n", 1);
863 int scp_send_filedata(char *data
, int len
)
867 struct sftp_packet
*pktin
;
869 if (!scp_sftp_filehandle
) {
873 while (!xfer_upload_ready(scp_sftp_xfer
)) {
875 ret
= xfer_upload_gotpkt(scp_sftp_xfer
, pktin
);
877 tell_user(stderr
, "error while writing: %s\n", fxp_error());
883 xfer_upload_data(scp_sftp_xfer
, data
, len
);
885 scp_sftp_fileoffset
= uint64_add32(scp_sftp_fileoffset
, len
);
888 int bufsize
= back
->send(backhandle
, data
, len
);
891 * If the network transfer is backing up - that is, the
892 * remote site is not accepting data as fast as we can
893 * produce it - then we must loop on network events until
894 * we have space in the buffer again.
896 while (bufsize
> MAX_SCP_BUFSIZE
) {
897 if (ssh_sftp_loop_iteration() < 0)
899 bufsize
= back
->sendbuffer(backhandle
);
906 int scp_send_finish(void)
909 struct fxp_attrs attrs
;
910 struct sftp_packet
*pktin
;
911 struct sftp_request
*req
, *rreq
;
914 while (!xfer_done(scp_sftp_xfer
)) {
916 xfer_upload_gotpkt(scp_sftp_xfer
, pktin
);
918 xfer_cleanup(scp_sftp_xfer
);
920 if (!scp_sftp_filehandle
) {
924 attrs
.flags
= SSH_FILEXFER_ATTR_ACMODTIME
;
925 attrs
.atime
= scp_sftp_atime
;
926 attrs
.mtime
= scp_sftp_mtime
;
927 sftp_register(req
= fxp_fsetstat_send(scp_sftp_filehandle
, attrs
));
928 rreq
= sftp_find_request(pktin
= sftp_recv());
930 ret
= fxp_fsetstat_recv(pktin
, rreq
);
932 tell_user(stderr
, "unable to set file times: %s\n", fxp_error());
936 sftp_register(req
= fxp_close_send(scp_sftp_filehandle
));
937 rreq
= sftp_find_request(pktin
= sftp_recv());
939 fxp_close_recv(pktin
, rreq
);
943 back
->send(backhandle
, "", 1);
948 char *scp_save_remotepath(void)
951 return scp_sftp_remotepath
;
956 void scp_restore_remotepath(char *data
)
959 scp_sftp_remotepath
= data
;
962 int scp_send_dirname(char *name
, int modes
)
967 struct fxp_attrs attrs
;
968 struct sftp_packet
*pktin
;
969 struct sftp_request
*req
, *rreq
;
972 if (scp_sftp_targetisdir
) {
973 fullname
= dupcat(scp_sftp_remotepath
, "/", name
, NULL
);
975 fullname
= dupstr(scp_sftp_remotepath
);
979 * We don't worry about whether we managed to create the
980 * directory, because if it exists already it's OK just to
981 * use it. Instead, we will stat it afterwards, and if it
982 * exists and is a directory we will assume we were either
983 * successful or it didn't matter.
985 sftp_register(req
= fxp_mkdir_send(fullname
));
986 rreq
= sftp_find_request(pktin
= sftp_recv());
988 ret
= fxp_mkdir_recv(pktin
, rreq
);
993 err
= "server reported no error";
995 sftp_register(req
= fxp_stat_send(fullname
));
996 rreq
= sftp_find_request(pktin
= sftp_recv());
998 ret
= fxp_stat_recv(pktin
, rreq
, &attrs
);
1000 if (!ret
|| !(attrs
.flags
& SSH_FILEXFER_ATTR_PERMISSIONS
) ||
1001 !(attrs
.permissions
& 0040000)) {
1002 tell_user(stderr
, "unable to create directory %s: %s",
1008 scp_sftp_remotepath
= fullname
;
1013 sprintf(buf
, "D%04o 0 ", modes
);
1014 back
->send(backhandle
, buf
, strlen(buf
));
1015 back
->send(backhandle
, name
, strlen(name
));
1016 back
->send(backhandle
, "\n", 1);
1021 int scp_send_enddir(void)
1024 sfree(scp_sftp_remotepath
);
1027 back
->send(backhandle
, "E\n", 2);
1033 * Yes, I know; I have an scp_sink_setup _and_ an scp_sink_init.
1034 * That's bad. The difference is that scp_sink_setup is called once
1035 * right at the start, whereas scp_sink_init is called to
1036 * initialise every level of recursion in the protocol.
1038 int scp_sink_setup(char *source
, int preserve
, int recursive
)
1044 tell_user(stderr
, "unable to initialise SFTP: %s", fxp_error());
1049 * It's possible that the source string we've been given
1050 * contains a wildcard. If so, we must split the directory
1051 * away from the wildcard itself (throwing an error if any
1052 * wildcardness comes before the final slash) and arrange
1053 * things so that a dirstack entry will be set up.
1055 newsource
= snewn(1+strlen(source
), char);
1056 if (!wc_unescape(newsource
, source
)) {
1057 /* Yes, here we go; it's a wildcard. Bah. */
1058 char *dupsource
, *lastpart
, *dirpart
, *wildcard
;
1059 dupsource
= dupstr(source
);
1060 lastpart
= stripslashes(dupsource
, 0);
1061 wildcard
= dupstr(lastpart
);
1063 if (*dupsource
&& dupsource
[1]) {
1065 * The remains of dupsource are at least two
1066 * characters long, meaning the pathname wasn't
1067 * empty or just `/'. Hence, we remove the trailing
1070 lastpart
[-1] = '\0';
1071 } else if (!*dupsource
) {
1073 * The remains of dupsource are _empty_ - the whole
1074 * pathname was a wildcard. Hence we need to
1075 * replace it with ".".
1078 dupsource
= dupstr(".");
1082 * Now we have separated our string into dupsource (the
1083 * directory part) and wildcard. Both of these will
1084 * need freeing at some point. Next step is to remove
1085 * wildcard escapes from the directory part, throwing
1086 * an error if it contains a real wildcard.
1088 dirpart
= snewn(1+strlen(dupsource
), char);
1089 if (!wc_unescape(dirpart
, dupsource
)) {
1090 tell_user(stderr
, "%s: multiple-level wildcards unsupported",
1100 * Now we have dirpart (unescaped, ie a valid remote
1101 * path), and wildcard (a wildcard). This will be
1102 * sufficient to arrange a dirstack entry.
1104 scp_sftp_remotepath
= dirpart
;
1105 scp_sftp_wildcard
= wildcard
;
1108 scp_sftp_remotepath
= newsource
;
1109 scp_sftp_wildcard
= NULL
;
1111 scp_sftp_preserve
= preserve
;
1112 scp_sftp_recursive
= recursive
;
1113 scp_sftp_donethistarget
= 0;
1114 scp_sftp_dirstack_head
= NULL
;
1119 int scp_sink_init(void)
1122 back
->send(backhandle
, "", 1);
1127 #define SCP_SINK_FILE 1
1128 #define SCP_SINK_DIR 2
1129 #define SCP_SINK_ENDDIR 3
1130 #define SCP_SINK_RETRY 4 /* not an action; just try again */
1131 struct scp_sink_action
{
1132 int action
; /* FILE, DIR, ENDDIR */
1133 char *buf
; /* will need freeing after use */
1134 char *name
; /* filename or dirname (not ENDDIR) */
1135 int mode
; /* access mode (not ENDDIR) */
1136 uint64 size
; /* file size (not ENDDIR) */
1137 int settime
; /* 1 if atime and mtime are filled */
1138 unsigned long atime
, mtime
; /* access times for the file */
1141 int scp_get_sink_action(struct scp_sink_action
*act
)
1145 int must_free_fname
;
1146 struct fxp_attrs attrs
;
1147 struct sftp_packet
*pktin
;
1148 struct sftp_request
*req
, *rreq
;
1151 if (!scp_sftp_dirstack_head
) {
1152 if (!scp_sftp_donethistarget
) {
1154 * Simple case: we are only dealing with one file.
1156 fname
= scp_sftp_remotepath
;
1157 must_free_fname
= 0;
1158 scp_sftp_donethistarget
= 1;
1161 * Even simpler case: one file _which we've done_.
1162 * Return 1 (finished).
1168 * We're now in the middle of stepping through a list
1169 * of names returned from fxp_readdir(); so let's carry
1172 struct scp_sftp_dirstack
*head
= scp_sftp_dirstack_head
;
1173 while (head
->namepos
< head
->namelen
&&
1174 (is_dots(head
->names
[head
->namepos
].filename
) ||
1176 !wc_match(head
->wildcard
,
1177 head
->names
[head
->namepos
].filename
))))
1178 head
->namepos
++; /* skip . and .. */
1179 if (head
->namepos
< head
->namelen
) {
1180 head
->matched_something
= 1;
1181 fname
= dupcat(head
->dirpath
, "/",
1182 head
->names
[head
->namepos
++].filename
,
1184 must_free_fname
= 1;
1187 * We've come to the end of the list; pop it off
1188 * the stack and return an ENDDIR action (or RETRY
1189 * if this was a wildcard match).
1191 if (head
->wildcard
) {
1192 act
->action
= SCP_SINK_RETRY
;
1193 if (!head
->matched_something
) {
1194 tell_user(stderr
, "pscp: wildcard '%s' matched "
1195 "no files", head
->wildcard
);
1198 sfree(head
->wildcard
);
1201 act
->action
= SCP_SINK_ENDDIR
;
1204 sfree(head
->dirpath
);
1206 scp_sftp_dirstack_head
= head
->next
;
1214 * Now we have a filename. Stat it, and see if it's a file
1217 sftp_register(req
= fxp_stat_send(fname
));
1218 rreq
= sftp_find_request(pktin
= sftp_recv());
1219 assert(rreq
== req
);
1220 ret
= fxp_stat_recv(pktin
, rreq
, &attrs
);
1222 if (!ret
|| !(attrs
.flags
& SSH_FILEXFER_ATTR_PERMISSIONS
)) {
1223 tell_user(stderr
, "unable to identify %s: %s", fname
,
1224 ret ?
"file type not supplied" : fxp_error());
1229 if (attrs
.permissions
& 0040000) {
1230 struct scp_sftp_dirstack
*newitem
;
1231 struct fxp_handle
*dirhandle
;
1232 int nnames
, namesize
;
1233 struct fxp_name
*ournames
;
1234 struct fxp_names
*names
;
1237 * It's a directory. If we're not in recursive mode,
1238 * this merits a complaint (which is fatal if the name
1239 * was specified directly, but not if it was matched by
1242 * We skip this complaint completely if
1243 * scp_sftp_wildcard is set, because that's an
1244 * indication that we're not actually supposed to
1245 * _recursively_ transfer the dir, just scan it for
1246 * things matching the wildcard.
1248 if (!scp_sftp_recursive
&& !scp_sftp_wildcard
) {
1249 tell_user(stderr
, "pscp: %s: is a directory", fname
);
1251 if (must_free_fname
) sfree(fname
);
1252 if (scp_sftp_dirstack_head
) {
1253 act
->action
= SCP_SINK_RETRY
;
1261 * Otherwise, the fun begins. We must fxp_opendir() the
1262 * directory, slurp the filenames into memory, return
1263 * SCP_SINK_DIR (unless this is a wildcard match), and
1264 * set targetisdir. The next time we're called, we will
1265 * run through the list of filenames one by one,
1266 * matching them against a wildcard if present.
1268 * If targetisdir is _already_ set (meaning we're
1269 * already in the middle of going through another such
1270 * list), we must push the other (target,namelist) pair
1273 sftp_register(req
= fxp_opendir_send(fname
));
1274 rreq
= sftp_find_request(pktin
= sftp_recv());
1275 assert(rreq
== req
);
1276 dirhandle
= fxp_opendir_recv(pktin
, rreq
);
1279 tell_user(stderr
, "scp: unable to open directory %s: %s",
1280 fname
, fxp_error());
1281 if (must_free_fname
) sfree(fname
);
1285 nnames
= namesize
= 0;
1290 sftp_register(req
= fxp_readdir_send(dirhandle
));
1291 rreq
= sftp_find_request(pktin
= sftp_recv());
1292 assert(rreq
== req
);
1293 names
= fxp_readdir_recv(pktin
, rreq
);
1295 if (names
== NULL
) {
1296 if (fxp_error_type() == SSH_FX_EOF
)
1298 tell_user(stderr
, "scp: reading directory %s: %s\n",
1299 fname
, fxp_error());
1300 if (must_free_fname
) sfree(fname
);
1305 if (names
->nnames
== 0) {
1306 fxp_free_names(names
);
1309 if (nnames
+ names
->nnames
>= namesize
) {
1310 namesize
+= names
->nnames
+ 128;
1311 ournames
= sresize(ournames
, namesize
, struct fxp_name
);
1313 for (i
= 0; i
< names
->nnames
; i
++) {
1314 if (!strcmp(names
->names
[i
].filename
, ".") ||
1315 !strcmp(names
->names
[i
].filename
, "..")) {
1317 * . and .. are normal consequences of
1318 * reading a directory, and aren't worth
1319 * complaining about.
1321 } else if (!vet_filename(names
->names
[i
].filename
)) {
1322 tell_user(stderr
, "ignoring potentially dangerous server-"
1323 "supplied filename '%s'\n",
1324 names
->names
[i
].filename
);
1326 ournames
[nnames
++] = names
->names
[i
];
1328 names
->nnames
= 0; /* prevent free_names */
1329 fxp_free_names(names
);
1331 sftp_register(req
= fxp_close_send(dirhandle
));
1332 rreq
= sftp_find_request(pktin
= sftp_recv());
1333 assert(rreq
== req
);
1334 fxp_close_recv(pktin
, rreq
);
1336 newitem
= snew(struct scp_sftp_dirstack
);
1337 newitem
->next
= scp_sftp_dirstack_head
;
1338 newitem
->names
= ournames
;
1339 newitem
->namepos
= 0;
1340 newitem
->namelen
= nnames
;
1341 if (must_free_fname
)
1342 newitem
->dirpath
= fname
;
1344 newitem
->dirpath
= dupstr(fname
);
1345 if (scp_sftp_wildcard
) {
1346 newitem
->wildcard
= scp_sftp_wildcard
;
1347 newitem
->matched_something
= 0;
1348 scp_sftp_wildcard
= NULL
;
1350 newitem
->wildcard
= NULL
;
1352 scp_sftp_dirstack_head
= newitem
;
1354 if (newitem
->wildcard
) {
1355 act
->action
= SCP_SINK_RETRY
;
1357 act
->action
= SCP_SINK_DIR
;
1358 act
->buf
= dupstr(stripslashes(fname
, 0));
1359 act
->name
= act
->buf
;
1360 act
->size
= uint64_make(0,0); /* duhh, it's a directory */
1361 act
->mode
= 07777 & attrs
.permissions
;
1362 if (scp_sftp_preserve
&&
1363 (attrs
.flags
& SSH_FILEXFER_ATTR_ACMODTIME
)) {
1364 act
->atime
= attrs
.atime
;
1365 act
->mtime
= attrs
.mtime
;
1374 * It's a file. Return SCP_SINK_FILE.
1376 act
->action
= SCP_SINK_FILE
;
1377 act
->buf
= dupstr(stripslashes(fname
, 0));
1378 act
->name
= act
->buf
;
1379 if (attrs
.flags
& SSH_FILEXFER_ATTR_SIZE
) {
1380 act
->size
= attrs
.size
;
1382 act
->size
= uint64_make(ULONG_MAX
,ULONG_MAX
); /* no idea */
1383 act
->mode
= 07777 & attrs
.permissions
;
1384 if (scp_sftp_preserve
&&
1385 (attrs
.flags
& SSH_FILEXFER_ATTR_ACMODTIME
)) {
1386 act
->atime
= attrs
.atime
;
1387 act
->mtime
= attrs
.mtime
;
1391 if (must_free_fname
)
1392 scp_sftp_currentname
= fname
;
1394 scp_sftp_currentname
= dupstr(fname
);
1409 if (ssh_scp_recv((unsigned char *) &ch
, 1) <= 0)
1412 bump("Protocol error: Unexpected newline");
1416 if (ssh_scp_recv((unsigned char *) &ch
, 1) <= 0)
1417 bump("Lost connection");
1420 act
->buf
= sresize(act
->buf
, bufsize
, char);
1423 } while (ch
!= '\n');
1424 act
->buf
[i
- 1] = '\0';
1426 case '\01': /* error */
1427 tell_user(stderr
, "%s\n", act
->buf
);
1429 continue; /* go round again */
1430 case '\02': /* fatal error */
1431 bump("%s", act
->buf
);
1433 back
->send(backhandle
, "", 1);
1434 act
->action
= SCP_SINK_ENDDIR
;
1437 if (sscanf(act
->buf
, "%ld %*d %ld %*d",
1438 &act
->mtime
, &act
->atime
) == 2) {
1440 back
->send(backhandle
, "", 1);
1441 continue; /* go round again */
1443 bump("Protocol error: Illegal time format");
1446 act
->action
= (action
== 'C' ? SCP_SINK_FILE
: SCP_SINK_DIR
);
1449 bump("Protocol error: Expected control record");
1452 * We will go round this loop only once, unless we hit
1459 * If we get here, we must have seen SCP_SINK_FILE or
1465 if (sscanf(act
->buf
, "%o %s %n", &act
->mode
, sizestr
, &i
) != 2)
1466 bump("Protocol error: Illegal file descriptor format");
1467 act
->size
= uint64_from_decimal(sizestr
);
1468 act
->name
= act
->buf
+ i
;
1474 int scp_accept_filexfer(void)
1477 struct sftp_packet
*pktin
;
1478 struct sftp_request
*req
, *rreq
;
1480 sftp_register(req
= fxp_open_send(scp_sftp_currentname
, SSH_FXF_READ
));
1481 rreq
= sftp_find_request(pktin
= sftp_recv());
1482 assert(rreq
== req
);
1483 scp_sftp_filehandle
= fxp_open_recv(pktin
, rreq
);
1485 if (!scp_sftp_filehandle
) {
1486 tell_user(stderr
, "pscp: unable to open %s: %s",
1487 scp_sftp_currentname
, fxp_error());
1491 scp_sftp_fileoffset
= uint64_make(0, 0);
1492 scp_sftp_xfer
= xfer_download_init(scp_sftp_filehandle
,
1493 scp_sftp_fileoffset
);
1494 sfree(scp_sftp_currentname
);
1497 back
->send(backhandle
, "", 1);
1498 return 0; /* can't fail */
1502 int scp_recv_filedata(char *data
, int len
)
1505 struct sftp_packet
*pktin
;
1509 xfer_download_queue(scp_sftp_xfer
);
1510 pktin
= sftp_recv();
1511 ret
= xfer_download_gotpkt(scp_sftp_xfer
, pktin
);
1514 tell_user(stderr
, "pscp: error while reading: %s", fxp_error());
1519 if (xfer_download_data(scp_sftp_xfer
, &vbuf
, &actuallen
)) {
1521 * This assertion relies on the fact that the natural
1522 * block size used in the xfer manager is at most that
1523 * used in this module. I don't like crossing layers in
1524 * this way, but it'll do for now.
1526 assert(actuallen
<= len
);
1527 memcpy(data
, vbuf
, actuallen
);
1532 scp_sftp_fileoffset
= uint64_add32(scp_sftp_fileoffset
, actuallen
);
1536 return ssh_scp_recv((unsigned char *) data
, len
);
1540 int scp_finish_filerecv(void)
1543 struct sftp_packet
*pktin
;
1544 struct sftp_request
*req
, *rreq
;
1547 * Ensure that xfer_done() will work correctly, so we can
1548 * clean up any outstanding requests from the file
1551 xfer_set_error(scp_sftp_xfer
);
1552 while (!xfer_done(scp_sftp_xfer
)) {
1556 pktin
= sftp_recv();
1557 xfer_download_gotpkt(scp_sftp_xfer
, pktin
);
1558 if (xfer_download_data(scp_sftp_xfer
, &vbuf
, &len
))
1561 xfer_cleanup(scp_sftp_xfer
);
1563 sftp_register(req
= fxp_close_send(scp_sftp_filehandle
));
1564 rreq
= sftp_find_request(pktin
= sftp_recv());
1565 assert(rreq
== req
);
1566 fxp_close_recv(pktin
, rreq
);
1569 back
->send(backhandle
, "", 1);
1574 /* ----------------------------------------------------------------------
1575 * Send an error message to the other side and to the screen.
1576 * Increment error counter.
1578 static void run_err(const char *fmt
, ...)
1584 str
= dupvprintf(fmt
, ap
);
1585 str2
= dupcat("scp: ", str
, "\n", NULL
);
1587 scp_send_errmsg(str2
);
1588 tell_user(stderr
, "%s", str2
);
1594 * Execute the source part of the SCP protocol.
1596 static void source(char *src
)
1599 unsigned long mtime
, atime
;
1605 time_t stat_starttime
, stat_lasttime
;
1607 attr
= file_type(src
);
1608 if (attr
== FILE_TYPE_NONEXISTENT
||
1609 attr
== FILE_TYPE_WEIRD
) {
1610 run_err("%s: %s file or directory", src
,
1611 (attr
== FILE_TYPE_WEIRD ?
"Not a" : "No such"));
1615 if (attr
== FILE_TYPE_DIRECTORY
) {
1618 * Avoid . and .. directories.
1621 p
= strrchr(src
, '/');
1623 p
= strrchr(src
, '\\');
1628 if (!strcmp(p
, ".") || !strcmp(p
, ".."))
1629 /* skip . and .. */ ;
1633 run_err("%s: not a regular file", src
);
1638 if ((last
= strrchr(src
, '/')) == NULL
)
1642 if (strrchr(last
, '\\') != NULL
)
1643 last
= strrchr(last
, '\\') + 1;
1644 if (last
== src
&& strchr(src
, ':') != NULL
)
1645 last
= strchr(src
, ':') + 1;
1647 f
= open_existing_file(src
, &size
, &mtime
, &atime
);
1649 run_err("%s: Cannot open file", src
);
1653 if (scp_send_filetimes(mtime
, atime
))
1659 uint64_decimal(size
, sizestr
);
1660 tell_user(stderr
, "Sending file %s, size=%s", last
, sizestr
);
1662 if (scp_send_filename(last
, size
, 0644))
1665 stat_bytes
= uint64_make(0,0);
1666 stat_starttime
= time(NULL
);
1669 for (i
= uint64_make(0,0);
1670 uint64_compare(i
,size
) < 0;
1671 i
= uint64_add32(i
,4096)) {
1672 char transbuf
[4096];
1675 if (uint64_compare(uint64_add32(i
, k
),size
) > 0) /* i + k > size */
1676 k
= (uint64_subtract(size
, i
)).lo
; /* k = size - i; */
1677 if ((j
= read_from_file(f
, transbuf
, k
)) != k
) {
1680 bump("%s: Read error", src
);
1682 if (scp_send_filedata(transbuf
, k
))
1683 bump("%s: Network error occurred", src
);
1686 stat_bytes
= uint64_add32(stat_bytes
, k
);
1687 if (time(NULL
) != stat_lasttime
||
1688 (uint64_compare(uint64_add32(i
, k
), size
) == 0)) {
1689 stat_lasttime
= time(NULL
);
1690 print_stats(last
, size
, stat_bytes
,
1691 stat_starttime
, stat_lasttime
);
1698 (void) scp_send_finish();
1702 * Recursively send the contents of a directory.
1704 static void rsource(char *src
)
1710 if ((last
= strrchr(src
, '/')) == NULL
)
1714 if (strrchr(last
, '\\') != NULL
)
1715 last
= strrchr(last
, '\\') + 1;
1716 if (last
== src
&& strchr(src
, ':') != NULL
)
1717 last
= strchr(src
, ':') + 1;
1719 /* maybe send filetime */
1721 save_target
= scp_save_remotepath();
1724 tell_user(stderr
, "Entering directory: %s", last
);
1725 if (scp_send_dirname(last
, 0755))
1728 dir
= open_directory(src
);
1731 while ((filename
= read_filename(dir
)) != NULL
) {
1732 char *foundfile
= dupcat(src
, "/", filename
, NULL
);
1738 close_directory(dir
);
1740 (void) scp_send_enddir();
1742 scp_restore_remotepath(save_target
);
1746 * Execute the sink part of the SCP protocol.
1748 static void sink(char *targ
, char *src
)
1758 time_t stat_starttime
, stat_lasttime
;
1761 attr
= file_type(targ
);
1762 if (attr
== FILE_TYPE_DIRECTORY
)
1765 if (targetshouldbedirectory
&& !targisdir
)
1766 bump("%s: Not a directory", targ
);
1770 struct scp_sink_action act
;
1771 if (scp_get_sink_action(&act
))
1774 if (act
.action
== SCP_SINK_ENDDIR
)
1777 if (act
.action
== SCP_SINK_RETRY
)
1782 * Prevent the remote side from maliciously writing to
1783 * files outside the target area by sending a filename
1784 * containing `../'. In fact, it shouldn't be sending
1785 * filenames with any slashes or colons in at all; so
1786 * we'll find the last slash, backslash or colon in the
1787 * filename and use only the part after that. (And
1790 * In addition, we also ensure here that if we're
1791 * copying a single file and the target is a directory
1792 * (common usage: `pscp host:filename .') the remote
1793 * can't send us a _different_ file name. We can
1794 * distinguish this case because `src' will be non-NULL
1795 * and the last component of that will fail to match
1796 * (the last component of) the name sent.
1798 * Well, not always; if `src' is a wildcard, we do
1799 * expect to get back filenames that don't correspond
1800 * exactly to it. Ideally in this case, we would like
1801 * to ensure that the returned filename actually
1802 * matches the wildcard pattern - but one of SCP's
1803 * protocol infelicities is that wildcard matching is
1804 * done at the server end _by the server's rules_ and
1805 * so in general this is infeasible. Hence, we only
1806 * accept filenames that don't correspond to `src' if
1807 * unsafe mode is enabled or we are using SFTP (which
1808 * resolves remote wildcards on the client side and can
1811 char *striptarget
, *stripsrc
;
1813 striptarget
= stripslashes(act
.name
, 1);
1814 if (striptarget
!= act
.name
) {
1815 tell_user(stderr
, "warning: remote host sent a compound"
1816 " pathname '%s'", act
.name
);
1817 tell_user(stderr
, " renaming local file to '%s'",
1822 * Also check to see if the target filename is '.' or
1823 * '..', or indeed '...' and so on because Windows
1824 * appears to interpret those like '..'.
1826 if (is_dots(striptarget
)) {
1827 bump("security violation: remote host attempted to write to"
1828 " a '.' or '..' path!");
1832 stripsrc
= stripslashes(src
, 1);
1833 if (strcmp(striptarget
, stripsrc
) &&
1834 !using_sftp
&& !scp_unsafe_mode
) {
1835 tell_user(stderr
, "warning: remote host tried to write "
1836 "to a file called '%s'", striptarget
);
1837 tell_user(stderr
, " when we requested a file "
1838 "called '%s'.", stripsrc
);
1839 tell_user(stderr
, " If this is a wildcard, "
1840 "consider upgrading to SSH-2 or using");
1841 tell_user(stderr
, " the '-unsafe' option. Renaming"
1842 " of this file has been disallowed.");
1843 /* Override the name the server provided with our own. */
1844 striptarget
= stripsrc
;
1848 if (targ
[0] != '\0')
1849 destfname
= dir_file_cat(targ
, striptarget
);
1851 destfname
= dupstr(striptarget
);
1854 * In this branch of the if, the target area is a
1855 * single file with an explicitly specified name in any
1856 * case, so there's no danger.
1858 destfname
= dupstr(targ
);
1860 attr
= file_type(destfname
);
1861 exists
= (attr
!= FILE_TYPE_NONEXISTENT
);
1863 if (act
.action
== SCP_SINK_DIR
) {
1864 if (exists
&& attr
!= FILE_TYPE_DIRECTORY
) {
1865 run_err("%s: Not a directory", destfname
);
1869 if (!create_directory(destfname
)) {
1870 run_err("%s: Cannot create directory", destfname
);
1874 sink(destfname
, NULL
);
1875 /* can we set the timestamp for directories ? */
1879 f
= open_new_file(destfname
);
1881 run_err("%s: Cannot create file", destfname
);
1885 if (scp_accept_filexfer())
1888 stat_bytes
= uint64_make(0, 0);
1889 stat_starttime
= time(NULL
);
1891 stat_name
= stripslashes(destfname
, 1);
1893 received
= uint64_make(0, 0);
1894 while (uint64_compare(received
,act
.size
) < 0) {
1895 char transbuf
[32768];
1898 blksize
= uint64_make(0, 32768);
1899 if (uint64_compare(blksize
,uint64_subtract(act
.size
,received
)) > 0)
1900 blksize
= uint64_subtract(act
.size
,received
);
1901 read
= scp_recv_filedata(transbuf
, (int)blksize
.lo
);
1903 bump("Lost connection");
1906 if (write_to_file(f
, transbuf
, read
) != (int)read
) {
1908 /* FIXME: in sftp we can actually abort the transfer */
1910 printf("\r%-25.25s | %50s\n",
1912 "Write error.. waiting for end of file");
1916 stat_bytes
= uint64_add32(stat_bytes
,read
);
1917 if (time(NULL
) > stat_lasttime
||
1918 uint64_compare(uint64_add32(received
, read
), act
.size
) == 0) {
1919 stat_lasttime
= time(NULL
);
1920 print_stats(stat_name
, act
.size
, stat_bytes
,
1921 stat_starttime
, stat_lasttime
);
1924 received
= uint64_add32(received
, read
);
1927 set_file_times(f
, act
.mtime
, act
.atime
);
1932 run_err("%s: Write error", destfname
);
1935 (void) scp_finish_filerecv();
1942 * We will copy local files to a remote server.
1944 static void toremote(int argc
, char *argv
[])
1946 char *src
, *targ
, *host
, *user
;
1950 targ
= argv
[argc
- 1];
1952 /* Separate host from filename */
1956 bump("targ == NULL in toremote()");
1960 /* Substitute "." for empty target */
1962 /* Separate host and username */
1964 host
= strrchr(host
, '@');
1975 if (colon(argv
[0]) != NULL
)
1976 bump("%s: Remote to remote not supported", argv
[0]);
1978 wc_type
= test_wildcard(argv
[0], 1);
1979 if (wc_type
== WCTYPE_NONEXISTENT
)
1980 bump("%s: No such file or directory\n", argv
[0]);
1981 else if (wc_type
== WCTYPE_WILDCARD
)
1982 targetshouldbedirectory
= 1;
1985 cmd
= dupprintf("scp%s%s%s%s -t %s",
1986 verbose ?
" -v" : "",
1987 recursive ?
" -r" : "",
1988 preserve ?
" -p" : "",
1989 targetshouldbedirectory ?
" -d" : "", targ
);
1990 do_cmd(host
, user
, cmd
);
1993 if (scp_source_setup(targ
, targetshouldbedirectory
))
1996 for (i
= 0; i
< argc
- 1; i
++) {
1998 if (colon(src
) != NULL
) {
1999 tell_user(stderr
, "%s: Remote to remote not supported\n", src
);
2004 wc_type
= test_wildcard(src
, 1);
2005 if (wc_type
== WCTYPE_NONEXISTENT
) {
2006 run_err("%s: No such file or directory", src
);
2008 } else if (wc_type
== WCTYPE_FILENAME
) {
2012 WildcardMatcher
*wc
;
2015 wc
= begin_wildcard_matching(src
);
2017 run_err("%s: No such file or directory", src
);
2021 while ((filename
= wildcard_get_filename(wc
)) != NULL
) {
2026 finish_wildcard_matching(wc
);
2032 * We will copy files from a remote server to the local machine.
2034 static void tolocal(int argc
, char *argv
[])
2036 char *src
, *targ
, *host
, *user
;
2040 bump("More than one remote source not supported");
2045 /* Separate host from filename */
2049 bump("Local to local copy not supported");
2053 /* Substitute "." for empty filename */
2055 /* Separate username and hostname */
2057 host
= strrchr(host
, '@');
2067 cmd
= dupprintf("scp%s%s%s%s -f %s",
2068 verbose ?
" -v" : "",
2069 recursive ?
" -r" : "",
2070 preserve ?
" -p" : "",
2071 targetshouldbedirectory ?
" -d" : "", src
);
2072 do_cmd(host
, user
, cmd
);
2075 if (scp_sink_setup(src
, preserve
, recursive
))
2082 * We will issue a list command to get a remote directory.
2084 static void get_dir_list(int argc
, char *argv
[])
2086 char *src
, *host
, *user
;
2092 /* Separate host from filename */
2096 bump("Local file listing not supported");
2100 /* Substitute "." for empty filename */
2102 /* Separate username and hostname */
2104 host
= strrchr(host
, '@');
2114 cmd
= snewn(4 * strlen(src
) + 100, char);
2115 strcpy(cmd
, "ls -la '");
2116 p
= cmd
+ strlen(cmd
);
2117 for (q
= src
; *q
; q
++) {
2130 do_cmd(host
, user
, cmd
);
2134 scp_sftp_listdir(src
);
2136 while (ssh_scp_recv((unsigned char *) &c
, 1) > 0)
2137 tell_char(stdout
, c
);
2142 * Short description of parameters.
2144 static void usage(void)
2146 printf("PuTTY Secure Copy client\n");
2147 printf("%s\n", ver
);
2148 printf("Usage: pscp [options] [user@]host:source target\n");
2150 (" pscp [options] source [source...] [user@]host:target\n");
2151 printf(" pscp [options] -ls [user@]host:filespec\n");
2152 printf("Options:\n");
2153 printf(" -V print version information and exit\n");
2154 printf(" -pgpfp print PGP key fingerprints and exit\n");
2155 printf(" -p preserve file attributes\n");
2156 printf(" -q quiet, don't show statistics\n");
2157 printf(" -r copy directories recursively\n");
2158 printf(" -v show verbose messages\n");
2159 printf(" -load sessname Load settings from saved session\n");
2160 printf(" -P port connect to specified port\n");
2161 printf(" -l user connect with specified username\n");
2162 printf(" -pw passw login with specified password\n");
2163 printf(" -1 -2 force use of particular SSH protocol version\n");
2164 printf(" -4 -6 force use of IPv4 or IPv6\n");
2165 printf(" -C enable compression\n");
2166 printf(" -i key private key file for authentication\n");
2167 printf(" -noagent disable use of Pageant\n");
2168 printf(" -agent enable use of Pageant\n");
2169 printf(" -batch disable all interactive prompts\n");
2170 printf(" -unsafe allow server-side wildcards (DANGEROUS)\n");
2171 printf(" -sftp force use of SFTP protocol\n");
2172 printf(" -scp force use of SCP protocol\n");
2175 * -gui is an internal option, used by GUI front ends to get
2176 * pscp to pass progress reports back to them. It's not an
2177 * ordinary user-accessible option, so it shouldn't be part of
2178 * the command-line help. The only people who need to know
2179 * about it are programmers, and they can read the source.
2182 (" -gui hWnd GUI mode with the windows handle for receiving messages\n");
2189 printf("pscp: %s\n", ver
);
2193 void cmdline_error(char *p
, ...)
2196 fprintf(stderr
, "pscp: ");
2198 vfprintf(stderr
, p
, ap
);
2200 fprintf(stderr
, "\n try typing just \"pscp\" for help\n");
2205 * Main program. (Called `psftp_main' because it gets called from
2206 * *sftp.c; bit silly, I know, but it had to be called _something_.)
2208 int psftp_main(int argc
, char *argv
[])
2212 default_protocol
= PROT_TELNET
;
2215 #ifdef FLAG_SYNCAGENT
2219 cmdline_tooltype
= TOOLTYPE_FILETRANSFER
;
2222 /* Load Default Settings before doing anything else. */
2223 do_defaults(NULL
, &cfg
);
2224 loaded_session
= FALSE
;
2226 for (i
= 1; i
< argc
; i
++) {
2228 if (argv
[i
][0] != '-')
2230 ret
= cmdline_process_param(argv
[i
], i
+1<argc?argv
[i
+1]:NULL
, 1, &cfg
);
2232 cmdline_error("option \"%s\" requires an argument", argv
[i
]);
2233 } else if (ret
== 2) {
2234 i
++; /* skip next argument */
2235 } else if (ret
== 1) {
2236 /* We have our own verbosity in addition to `flags'. */
2237 if (flags
& FLAG_VERBOSE
)
2239 } else if (strcmp(argv
[i
], "-pgpfp") == 0) {
2242 } else if (strcmp(argv
[i
], "-r") == 0) {
2244 } else if (strcmp(argv
[i
], "-p") == 0) {
2246 } else if (strcmp(argv
[i
], "-q") == 0) {
2248 } else if (strcmp(argv
[i
], "-h") == 0 || strcmp(argv
[i
], "-?") == 0) {
2250 } else if (strcmp(argv
[i
], "-V") == 0) {
2252 } else if (strcmp(argv
[i
], "-ls") == 0) {
2254 } else if (strcmp(argv
[i
], "-batch") == 0) {
2255 console_batch_mode
= 1;
2256 } else if (strcmp(argv
[i
], "-unsafe") == 0) {
2257 scp_unsafe_mode
= 1;
2258 } else if (strcmp(argv
[i
], "-sftp") == 0) {
2259 try_scp
= 0; try_sftp
= 1;
2260 } else if (strcmp(argv
[i
], "-scp") == 0) {
2261 try_scp
= 1; try_sftp
= 0;
2262 } else if (strcmp(argv
[i
], "--") == 0) {
2266 cmdline_error("unknown option \"%s\"", argv
[i
]);
2276 get_dir_list(argc
, argv
);
2283 targetshouldbedirectory
= 1;
2285 if (colon(argv
[argc
- 1]) != NULL
)
2286 toremote(argc
, argv
);
2288 tolocal(argc
, argv
);
2291 if (back
!= NULL
&& back
->connected(backhandle
)) {
2293 back
->special(backhandle
, TS_EOF
);
2294 ssh_scp_recv((unsigned char *) &ch
, 1);
2299 console_provide_logctx(NULL
);
2300 back
->free(backhandle
);
2304 return (errs
== 0 ?
0 : 1);