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
;
50 static void source(char *src
);
51 static void rsource(char *src
);
52 static void sink(char *targ
, char *src
);
54 const char *const appname
= "PSCP";
57 * The maximum amount of queued data we accept before we stop and
58 * wait for the server to process some.
60 #define MAX_SCP_BUFSIZE 16384
62 void ldisc_send(void *handle
, char *buf
, int len
, int interactive
)
65 * This is only here because of the calls to ldisc_send(NULL,
66 * 0) in ssh.c. Nothing in PSCP actually needs to use the ldisc
67 * as an ldisc. So if we get called with any real data, I want
73 static void tell_char(FILE * stream
, char c
)
78 static void tell_str(FILE * stream
, char *str
)
82 for (i
= 0; i
< strlen(str
); ++i
)
83 tell_char(stream
, str
[i
]);
86 static void tell_user(FILE * stream
, char *fmt
, ...)
91 str
= dupvprintf(fmt
, ap
);
93 str2
= dupcat(str
, "\n", NULL
);
95 tell_str(stream
, str2
);
100 * Print an error message and perform a fatal exit.
102 void fatalbox(char *fmt
, ...)
107 str
= dupvprintf(fmt
, ap
);
108 str2
= dupcat("Fatal: ", str
, "\n", NULL
);
111 tell_str(stderr
, str2
);
117 void modalfatalbox(char *fmt
, ...)
122 str
= dupvprintf(fmt
, ap
);
123 str2
= dupcat("Fatal: ", str
, "\n", NULL
);
126 tell_str(stderr
, str2
);
132 void connection_fatal(void *frontend
, char *fmt
, ...)
137 str
= dupvprintf(fmt
, ap
);
138 str2
= dupcat("Fatal: ", str
, "\n", NULL
);
141 tell_str(stderr
, str2
);
149 * In pscp, all agent requests should be synchronous, so this is a
152 void agent_schedule_callback(void (*callback
)(void *, void *, int),
153 void *callback_ctx
, void *data
, int len
)
155 assert(!"We shouldn't be here");
159 * Receive a block of data from the SSH link. Block until all data
162 * To do this, we repeatedly call the SSH protocol module, with our
163 * own trap in from_backend() to catch the data that comes back. We
164 * do this until we have enough data.
167 static unsigned char *outptr
; /* where to put the data */
168 static unsigned outlen
; /* how much data required */
169 static unsigned char *pending
= NULL
; /* any spare data */
170 static unsigned pendlen
= 0, pendsize
= 0; /* length and phys. size of buffer */
171 int from_backend(void *frontend
, int is_stderr
, const char *data
, int datalen
)
173 unsigned char *p
= (unsigned char *) data
;
174 unsigned len
= (unsigned) datalen
;
177 * stderr data is just spouted to local stderr and otherwise
182 if (fwrite(data
, 1, len
, stderr
) < len
)
187 if ((outlen
> 0) && (len
> 0)) {
188 unsigned used
= outlen
;
191 memcpy(outptr
, p
, used
);
199 if (pendsize
< pendlen
+ len
) {
200 pendsize
= pendlen
+ len
+ 4096;
201 pending
= sresize(pending
, pendsize
, unsigned char);
203 memcpy(pending
+ pendlen
, p
, len
);
209 int from_backend_untrusted(void *frontend_handle
, const char *data
, int len
)
212 * No "untrusted" output should get here (the way the code is
213 * currently, it's all diverted by FLAG_STDERR).
215 assert(!"Unexpected call to from_backend_untrusted()");
216 return 0; /* not reached */
218 int from_backend_eof(void *frontend
)
221 * We expect to be the party deciding when to close the
222 * connection, so if we see EOF before we sent it ourselves, we
226 connection_fatal(frontend
,
227 "Received unexpected end-of-file from server");
231 static int ssh_scp_recv(unsigned char *buf
, int len
)
237 * See if the pending-input block contains some of what we
241 unsigned pendused
= pendlen
;
242 if (pendused
> outlen
)
244 memcpy(outptr
, pending
, pendused
);
245 memmove(pending
, pending
+ pendused
, pendlen
- pendused
);
259 if (back
->exitcode(backhandle
) >= 0 || ssh_sftp_loop_iteration() < 0)
267 * Loop through the ssh connection and authentication process.
269 static void ssh_scp_init(void)
271 while (!back
->sendok(backhandle
)) {
272 if (back
->exitcode(backhandle
) >= 0) {
276 if (ssh_sftp_loop_iteration() < 0) {
282 /* Work out which backend we ended up using. */
283 if (!ssh_fallback_cmd(backhandle
))
284 using_sftp
= main_cmd_is_sftp
;
286 using_sftp
= fallback_cmd_is_sftp
;
290 tell_user(stderr
, "Using SFTP");
292 tell_user(stderr
, "Using SCP1");
297 * Print an error message and exit after closing the SSH link.
299 static void bump(char *fmt
, ...)
304 str
= dupvprintf(fmt
, ap
);
306 str2
= dupcat(str
, "\n", NULL
);
308 tell_str(stderr
, str2
);
312 if (back
!= NULL
&& back
->connected(backhandle
)) {
314 back
->special(backhandle
, TS_EOF
);
316 ssh_scp_recv((unsigned char *) &ch
, 1);
323 * Wait for the reply to a single SFTP request. Parallels the same
324 * function in psftp.c (but isn't centralised into sftp.c because the
325 * latter module handles SFTP only and shouldn't assume that SFTP is
326 * the only thing going on by calling connection_fatal).
328 struct sftp_packet
*sftp_wait_for_reply(struct sftp_request
*req
)
330 struct sftp_packet
*pktin
;
331 struct sftp_request
*rreq
;
336 connection_fatal(NULL
, "did not receive SFTP response packet "
338 rreq
= sftp_find_request(pktin
);
340 connection_fatal(NULL
, "unable to understand SFTP response packet "
341 "from server: %s", fxp_error());
346 * Open an SSH connection to user@host and execute cmd.
348 static void do_cmd(char *host
, char *user
, char *cmd
)
354 if (host
== NULL
|| host
[0] == '\0')
355 bump("Empty host name");
358 * Remove fiddly bits of address: remove a colon suffix, and
359 * the square brackets around an IPv6 literal address.
361 if (host
[0] == '[') {
363 host
[strcspn(host
, "]")] = '\0';
365 host
[strcspn(host
, ":")] = '\0';
369 * If we haven't loaded session details already (e.g., from -load),
370 * try looking for a session called "host".
372 if (!loaded_session
) {
373 /* Try to load settings for `host' into a temporary config */
374 Conf
*conf2
= conf_new();
375 conf_set_str(conf2
, CONF_host
, "");
376 do_defaults(host
, conf2
);
377 if (conf_get_str(conf2
, CONF_host
)[0] != '\0') {
378 /* Settings present and include hostname */
379 /* Re-load data into the real config. */
380 do_defaults(host
, conf
);
382 /* Session doesn't exist or mention a hostname. */
383 /* Use `host' as a bare hostname. */
384 conf_set_str(conf
, CONF_host
, host
);
387 /* Patch in hostname `host' to session details. */
388 conf_set_str(conf
, CONF_host
, host
);
392 * Force use of SSH. (If they got the protocol wrong we assume the
393 * port is useless too.)
395 if (conf_get_int(conf
, CONF_protocol
) != PROT_SSH
) {
396 conf_set_int(conf
, CONF_protocol
, PROT_SSH
);
397 conf_set_int(conf
, CONF_port
, 22);
401 * Enact command-line overrides.
403 cmdline_run_saved(conf
);
406 * Muck about with the hostname in various ways.
409 char *hostbuf
= dupstr(conf_get_str(conf
, CONF_host
));
410 char *host
= hostbuf
;
414 * Trim leading whitespace.
416 host
+= strspn(host
, " \t");
419 * See if host is of the form user@host, and separate out
420 * the username if so.
422 if (host
[0] != '\0') {
423 char *atsign
= strrchr(host
, '@');
426 conf_set_str(conf
, CONF_username
, host
);
432 * Remove any remaining whitespace.
437 if (*q
!= ' ' && *q
!= '\t')
443 conf_set_str(conf
, CONF_host
, hostbuf
);
448 if (user
!= NULL
&& user
[0] != '\0') {
449 conf_set_str(conf
, CONF_username
, user
);
450 } else if (conf_get_str(conf
, CONF_username
)[0] == '\0') {
451 user
= get_username();
453 bump("Empty user name");
456 tell_user(stderr
, "Guessing user name: %s", user
);
457 conf_set_str(conf
, CONF_username
, user
);
463 * Disable scary things which shouldn't be enabled for simple
464 * things like SCP and SFTP: agent forwarding, port forwarding,
467 conf_set_int(conf
, CONF_x11_forward
, 0);
468 conf_set_int(conf
, CONF_agentfwd
, 0);
469 conf_set_int(conf
, CONF_ssh_simple
, TRUE
);
472 while ((key
= conf_get_str_nthstrkey(conf
, CONF_portfwd
, 0)) != NULL
)
473 conf_del_str_str(conf
, CONF_portfwd
, key
);
477 * Set up main and possibly fallback command depending on
478 * options specified by user.
479 * Attempt to start the SFTP subsystem as a first choice,
480 * falling back to the provided scp command if that fails.
482 conf_set_str(conf
, CONF_remote_cmd2
, "");
484 /* First choice is SFTP subsystem. */
485 main_cmd_is_sftp
= 1;
486 conf_set_str(conf
, CONF_remote_cmd
, "sftp");
487 conf_set_int(conf
, CONF_ssh_subsys
, TRUE
);
489 /* Fallback is to use the provided scp command. */
490 fallback_cmd_is_sftp
= 0;
491 conf_set_str(conf
, CONF_remote_cmd2
, cmd
);
492 conf_set_int(conf
, CONF_ssh_subsys2
, FALSE
);
494 /* Since we're not going to try SCP, we may as well try
495 * harder to find an SFTP server, since in the current
496 * implementation we have a spare slot. */
497 fallback_cmd_is_sftp
= 1;
498 /* see psftp.c for full explanation of this kludge */
499 conf_set_str(conf
, CONF_remote_cmd2
,
500 "test -x /usr/lib/sftp-server &&"
501 " exec /usr/lib/sftp-server\n"
502 "test -x /usr/local/lib/sftp-server &&"
503 " exec /usr/local/lib/sftp-server\n"
505 conf_set_int(conf
, CONF_ssh_subsys2
, FALSE
);
508 /* Don't try SFTP at all; just try the scp command. */
509 main_cmd_is_sftp
= 0;
510 conf_set_str(conf
, CONF_remote_cmd
, cmd
);
511 conf_set_int(conf
, CONF_ssh_subsys
, FALSE
);
513 conf_set_int(conf
, CONF_nopty
, TRUE
);
517 err
= back
->init(NULL
, &backhandle
, conf
,
518 conf_get_str(conf
, CONF_host
),
519 conf_get_int(conf
, CONF_port
),
521 conf_get_int(conf
, CONF_tcp_keepalives
));
523 bump("ssh_init: %s", err
);
524 logctx
= log_init(NULL
, conf
);
525 back
->provide_logctx(backhandle
, logctx
);
526 console_provide_logctx(logctx
);
528 if (verbose
&& realhost
!= NULL
&& errs
== 0)
529 tell_user(stderr
, "Connected to %s", realhost
);
534 * Update statistic information about current file.
536 static void print_stats(char *name
, uint64 size
, uint64 done
,
537 time_t start
, time_t now
)
548 elap
= (unsigned long) difftime(now
, start
);
551 ratebs
= (float) (uint64_to_double(done
) / elap
);
553 ratebs
= (float) uint64_to_double(done
);
556 eta
= (unsigned long) (uint64_to_double(uint64_subtract(size
, done
)));
558 eta
= (unsigned long)
559 ((uint64_to_double(uint64_subtract(size
, done
)) / ratebs
));
562 etastr
= dupprintf("%02ld:%02ld:%02ld",
563 eta
/ 3600, (eta
% 3600) / 60, eta
% 60);
565 donedbl
= uint64_to_double(done
);
566 sizedbl
= uint64_to_double(size
);
567 pct
= (int) (100 * (donedbl
* 1.0 / sizedbl
));
571 /* divide by 1024 to provide kB */
572 uint64_decimal(uint64_shift_right(done
, 10), donekb
);
573 len
= printf("\r%-25.25s | %s kB | %5.1f kB/s | ETA: %8s | %3d%%",
575 donekb
, ratebs
/ 1024.0, etastr
, pct
);
576 if (len
< prev_stats_len
)
577 printf("%*s", prev_stats_len
- len
, "");
578 prev_stats_len
= len
;
580 if (uint64_compare(done
, size
) == 0)
590 * Find a colon in str and return a pointer to the colon.
591 * This is used to separate hostname from filename.
593 static char *colon(char *str
)
595 /* We ignore a leading colon, since the hostname cannot be
596 empty. We also ignore a colon as second character because
597 of filenames like f:myfile.txt. */
598 if (str
[0] == '\0' || str
[0] == ':' ||
599 (str
[0] != '[' && str
[1] == ':'))
601 while (*str
!= '\0' && *str
!= ':' && *str
!= '/' && *str
!= '\\') {
603 /* Skip over IPv6 literal addresses
604 * (eg: 'jeroen@[2001:db8::1]:myfile.txt') */
605 char *ipv6_end
= strchr(str
, ']');
619 * Return a pointer to the portion of str that comes after the last
620 * slash (or backslash or colon, if `local' is TRUE).
622 static char *stripslashes(char *str
, int local
)
627 p
= strchr(str
, ':');
631 p
= strrchr(str
, '/');
635 p
= strrchr(str
, '\\');
643 * Determine whether a string is entirely composed of dots.
645 static int is_dots(char *str
)
647 return str
[strspn(str
, ".")] == '\0';
651 * Wait for a response from the other side.
652 * Return 0 if ok, -1 if error.
654 static int response(void)
656 char ch
, resp
, rbuf
[2048];
659 if (ssh_scp_recv((unsigned char *) &resp
, 1) <= 0)
660 bump("Lost connection");
670 case 2: /* fatal error */
672 if (ssh_scp_recv((unsigned char *) &ch
, 1) <= 0)
673 bump("Protocol error: Lost connection");
675 } while (p
< sizeof(rbuf
) && ch
!= '\n');
678 tell_user(stderr
, "%s", rbuf
);
686 int sftp_recvdata(char *buf
, int len
)
688 return ssh_scp_recv((unsigned char *) buf
, len
);
690 int sftp_senddata(char *buf
, int len
)
692 back
->send(backhandle
, buf
, len
);
696 /* ----------------------------------------------------------------------
697 * sftp-based replacement for the hacky `pscp -ls'.
699 static int sftp_ls_compare(const void *av
, const void *bv
)
701 const struct fxp_name
*a
= (const struct fxp_name
*) av
;
702 const struct fxp_name
*b
= (const struct fxp_name
*) bv
;
703 return strcmp(a
->filename
, b
->filename
);
705 void scp_sftp_listdir(char *dirname
)
707 struct fxp_handle
*dirh
;
708 struct fxp_names
*names
;
709 struct fxp_name
*ournames
;
710 struct sftp_packet
*pktin
;
711 struct sftp_request
*req
;
712 int nnames
, namesize
;
716 tell_user(stderr
, "unable to initialise SFTP: %s", fxp_error());
721 printf("Listing directory %s\n", dirname
);
723 req
= fxp_opendir_send(dirname
);
724 pktin
= sftp_wait_for_reply(req
);
725 dirh
= fxp_opendir_recv(pktin
, req
);
728 printf("Unable to open %s: %s\n", dirname
, fxp_error());
730 nnames
= namesize
= 0;
735 req
= fxp_readdir_send(dirh
);
736 pktin
= sftp_wait_for_reply(req
);
737 names
= fxp_readdir_recv(pktin
, req
);
740 if (fxp_error_type() == SSH_FX_EOF
)
742 printf("Reading directory %s: %s\n", dirname
, fxp_error());
745 if (names
->nnames
== 0) {
746 fxp_free_names(names
);
750 if (nnames
+ names
->nnames
>= namesize
) {
751 namesize
+= names
->nnames
+ 128;
752 ournames
= sresize(ournames
, namesize
, struct fxp_name
);
755 for (i
= 0; i
< names
->nnames
; i
++)
756 ournames
[nnames
++] = names
->names
[i
];
757 names
->nnames
= 0; /* prevent free_names */
758 fxp_free_names(names
);
760 req
= fxp_close_send(dirh
);
761 pktin
= sftp_wait_for_reply(req
);
762 fxp_close_recv(pktin
, req
);
765 * Now we have our filenames. Sort them by actual file
766 * name, and then output the longname parts.
769 qsort(ournames
, nnames
, sizeof(*ournames
), sftp_ls_compare
);
774 for (i
= 0; i
< nnames
; i
++)
775 printf("%s\n", ournames
[i
].longname
);
781 /* ----------------------------------------------------------------------
782 * Helper routines that contain the actual SCP protocol elements,
783 * implemented both as SCP1 and SFTP.
786 static struct scp_sftp_dirstack
{
787 struct scp_sftp_dirstack
*next
;
788 struct fxp_name
*names
;
789 int namepos
, namelen
;
792 int matched_something
; /* wildcard match set was non-empty */
793 } *scp_sftp_dirstack_head
;
794 static char *scp_sftp_remotepath
, *scp_sftp_currentname
;
795 static char *scp_sftp_wildcard
;
796 static int scp_sftp_targetisdir
, scp_sftp_donethistarget
;
797 static int scp_sftp_preserve
, scp_sftp_recursive
;
798 static unsigned long scp_sftp_mtime
, scp_sftp_atime
;
799 static int scp_has_times
;
800 static struct fxp_handle
*scp_sftp_filehandle
;
801 static struct fxp_xfer
*scp_sftp_xfer
;
802 static uint64 scp_sftp_fileoffset
;
804 int scp_source_setup(char *target
, int shouldbedir
)
808 * Find out whether the target filespec is in fact a
811 struct sftp_packet
*pktin
;
812 struct sftp_request
*req
;
813 struct fxp_attrs attrs
;
817 tell_user(stderr
, "unable to initialise SFTP: %s", fxp_error());
822 req
= fxp_stat_send(target
);
823 pktin
= sftp_wait_for_reply(req
);
824 ret
= fxp_stat_recv(pktin
, req
, &attrs
);
826 if (!ret
|| !(attrs
.flags
& SSH_FILEXFER_ATTR_PERMISSIONS
))
827 scp_sftp_targetisdir
= 0;
829 scp_sftp_targetisdir
= (attrs
.permissions
& 0040000) != 0;
831 if (shouldbedir
&& !scp_sftp_targetisdir
) {
832 bump("pscp: remote filespec %s: not a directory\n", target
);
835 scp_sftp_remotepath
= dupstr(target
);
844 int scp_send_errmsg(char *str
)
847 /* do nothing; we never need to send our errors to the server */
849 back
->send(backhandle
, "\001", 1);/* scp protocol error prefix */
850 back
->send(backhandle
, str
, strlen(str
));
852 return 0; /* can't fail */
855 int scp_send_filetimes(unsigned long mtime
, unsigned long atime
)
858 scp_sftp_mtime
= mtime
;
859 scp_sftp_atime
= atime
;
864 sprintf(buf
, "T%lu 0 %lu 0\n", mtime
, atime
);
865 back
->send(backhandle
, buf
, strlen(buf
));
870 int scp_send_filename(char *name
, uint64 size
, int permissions
)
874 struct sftp_packet
*pktin
;
875 struct sftp_request
*req
;
876 struct fxp_attrs attrs
;
878 if (scp_sftp_targetisdir
) {
879 fullname
= dupcat(scp_sftp_remotepath
, "/", name
, NULL
);
881 fullname
= dupstr(scp_sftp_remotepath
);
885 PUT_PERMISSIONS(attrs
, permissions
);
887 req
= fxp_open_send(fullname
,
888 SSH_FXF_WRITE
| SSH_FXF_CREAT
| SSH_FXF_TRUNC
,
890 pktin
= sftp_wait_for_reply(req
);
891 scp_sftp_filehandle
= fxp_open_recv(pktin
, req
);
893 if (!scp_sftp_filehandle
) {
894 tell_user(stderr
, "pscp: unable to open %s: %s",
895 fullname
, fxp_error());
900 scp_sftp_fileoffset
= uint64_make(0, 0);
901 scp_sftp_xfer
= xfer_upload_init(scp_sftp_filehandle
,
902 scp_sftp_fileoffset
);
908 uint64_decimal(size
, sizestr
);
911 sprintf(buf
, "C%04o %s ", (int)(permissions
& 07777), sizestr
);
912 back
->send(backhandle
, buf
, strlen(buf
));
913 back
->send(backhandle
, name
, strlen(name
));
914 back
->send(backhandle
, "\n", 1);
919 int scp_send_filedata(char *data
, int len
)
923 struct sftp_packet
*pktin
;
925 if (!scp_sftp_filehandle
) {
929 while (!xfer_upload_ready(scp_sftp_xfer
)) {
931 ret
= xfer_upload_gotpkt(scp_sftp_xfer
, pktin
);
933 tell_user(stderr
, "error while writing: %s", fxp_error());
934 if (ret
== INT_MIN
) /* pktin not even freed */
941 xfer_upload_data(scp_sftp_xfer
, data
, len
);
943 scp_sftp_fileoffset
= uint64_add32(scp_sftp_fileoffset
, len
);
946 int bufsize
= back
->send(backhandle
, data
, len
);
949 * If the network transfer is backing up - that is, the
950 * remote site is not accepting data as fast as we can
951 * produce it - then we must loop on network events until
952 * we have space in the buffer again.
954 while (bufsize
> MAX_SCP_BUFSIZE
) {
955 if (ssh_sftp_loop_iteration() < 0)
957 bufsize
= back
->sendbuffer(backhandle
);
964 int scp_send_finish(void)
967 struct fxp_attrs attrs
;
968 struct sftp_packet
*pktin
;
969 struct sftp_request
*req
;
972 while (!xfer_done(scp_sftp_xfer
)) {
974 ret
= xfer_upload_gotpkt(scp_sftp_xfer
, pktin
);
976 tell_user(stderr
, "error while writing: %s", fxp_error());
977 if (ret
== INT_MIN
) /* pktin not even freed */
983 xfer_cleanup(scp_sftp_xfer
);
985 if (!scp_sftp_filehandle
) {
989 attrs
.flags
= SSH_FILEXFER_ATTR_ACMODTIME
;
990 attrs
.atime
= scp_sftp_atime
;
991 attrs
.mtime
= scp_sftp_mtime
;
992 req
= fxp_fsetstat_send(scp_sftp_filehandle
, attrs
);
993 pktin
= sftp_wait_for_reply(req
);
994 ret
= fxp_fsetstat_recv(pktin
, req
);
996 tell_user(stderr
, "unable to set file times: %s", fxp_error());
1000 req
= fxp_close_send(scp_sftp_filehandle
);
1001 pktin
= sftp_wait_for_reply(req
);
1002 fxp_close_recv(pktin
, req
);
1006 back
->send(backhandle
, "", 1);
1011 char *scp_save_remotepath(void)
1014 return scp_sftp_remotepath
;
1019 void scp_restore_remotepath(char *data
)
1022 scp_sftp_remotepath
= data
;
1025 int scp_send_dirname(char *name
, int modes
)
1030 struct fxp_attrs attrs
;
1031 struct sftp_packet
*pktin
;
1032 struct sftp_request
*req
;
1035 if (scp_sftp_targetisdir
) {
1036 fullname
= dupcat(scp_sftp_remotepath
, "/", name
, NULL
);
1038 fullname
= dupstr(scp_sftp_remotepath
);
1042 * We don't worry about whether we managed to create the
1043 * directory, because if it exists already it's OK just to
1044 * use it. Instead, we will stat it afterwards, and if it
1045 * exists and is a directory we will assume we were either
1046 * successful or it didn't matter.
1048 req
= fxp_mkdir_send(fullname
);
1049 pktin
= sftp_wait_for_reply(req
);
1050 ret
= fxp_mkdir_recv(pktin
, req
);
1055 err
= "server reported no error";
1057 req
= fxp_stat_send(fullname
);
1058 pktin
= sftp_wait_for_reply(req
);
1059 ret
= fxp_stat_recv(pktin
, req
, &attrs
);
1061 if (!ret
|| !(attrs
.flags
& SSH_FILEXFER_ATTR_PERMISSIONS
) ||
1062 !(attrs
.permissions
& 0040000)) {
1063 tell_user(stderr
, "unable to create directory %s: %s",
1070 scp_sftp_remotepath
= fullname
;
1075 sprintf(buf
, "D%04o 0 ", modes
);
1076 back
->send(backhandle
, buf
, strlen(buf
));
1077 back
->send(backhandle
, name
, strlen(name
));
1078 back
->send(backhandle
, "\n", 1);
1083 int scp_send_enddir(void)
1086 sfree(scp_sftp_remotepath
);
1089 back
->send(backhandle
, "E\n", 2);
1095 * Yes, I know; I have an scp_sink_setup _and_ an scp_sink_init.
1096 * That's bad. The difference is that scp_sink_setup is called once
1097 * right at the start, whereas scp_sink_init is called to
1098 * initialise every level of recursion in the protocol.
1100 int scp_sink_setup(char *source
, int preserve
, int recursive
)
1106 tell_user(stderr
, "unable to initialise SFTP: %s", fxp_error());
1111 * It's possible that the source string we've been given
1112 * contains a wildcard. If so, we must split the directory
1113 * away from the wildcard itself (throwing an error if any
1114 * wildcardness comes before the final slash) and arrange
1115 * things so that a dirstack entry will be set up.
1117 newsource
= snewn(1+strlen(source
), char);
1118 if (!wc_unescape(newsource
, source
)) {
1119 /* Yes, here we go; it's a wildcard. Bah. */
1120 char *dupsource
, *lastpart
, *dirpart
, *wildcard
;
1124 dupsource
= dupstr(source
);
1125 lastpart
= stripslashes(dupsource
, 0);
1126 wildcard
= dupstr(lastpart
);
1128 if (*dupsource
&& dupsource
[1]) {
1130 * The remains of dupsource are at least two
1131 * characters long, meaning the pathname wasn't
1132 * empty or just `/'. Hence, we remove the trailing
1135 lastpart
[-1] = '\0';
1136 } else if (!*dupsource
) {
1138 * The remains of dupsource are _empty_ - the whole
1139 * pathname was a wildcard. Hence we need to
1140 * replace it with ".".
1143 dupsource
= dupstr(".");
1147 * Now we have separated our string into dupsource (the
1148 * directory part) and wildcard. Both of these will
1149 * need freeing at some point. Next step is to remove
1150 * wildcard escapes from the directory part, throwing
1151 * an error if it contains a real wildcard.
1153 dirpart
= snewn(1+strlen(dupsource
), char);
1154 if (!wc_unescape(dirpart
, dupsource
)) {
1155 tell_user(stderr
, "%s: multiple-level wildcards unsupported",
1165 * Now we have dirpart (unescaped, ie a valid remote
1166 * path), and wildcard (a wildcard). This will be
1167 * sufficient to arrange a dirstack entry.
1169 scp_sftp_remotepath
= dirpart
;
1170 scp_sftp_wildcard
= wildcard
;
1173 scp_sftp_remotepath
= newsource
;
1174 scp_sftp_wildcard
= NULL
;
1176 scp_sftp_preserve
= preserve
;
1177 scp_sftp_recursive
= recursive
;
1178 scp_sftp_donethistarget
= 0;
1179 scp_sftp_dirstack_head
= NULL
;
1184 int scp_sink_init(void)
1187 back
->send(backhandle
, "", 1);
1192 #define SCP_SINK_FILE 1
1193 #define SCP_SINK_DIR 2
1194 #define SCP_SINK_ENDDIR 3
1195 #define SCP_SINK_RETRY 4 /* not an action; just try again */
1196 struct scp_sink_action
{
1197 int action
; /* FILE, DIR, ENDDIR */
1198 char *buf
; /* will need freeing after use */
1199 char *name
; /* filename or dirname (not ENDDIR) */
1200 long permissions
; /* access permissions (not ENDDIR) */
1201 uint64 size
; /* file size (not ENDDIR) */
1202 int settime
; /* 1 if atime and mtime are filled */
1203 unsigned long atime
, mtime
; /* access times for the file */
1206 int scp_get_sink_action(struct scp_sink_action
*act
)
1210 int must_free_fname
;
1211 struct fxp_attrs attrs
;
1212 struct sftp_packet
*pktin
;
1213 struct sftp_request
*req
;
1216 if (!scp_sftp_dirstack_head
) {
1217 if (!scp_sftp_donethistarget
) {
1219 * Simple case: we are only dealing with one file.
1221 fname
= scp_sftp_remotepath
;
1222 must_free_fname
= 0;
1223 scp_sftp_donethistarget
= 1;
1226 * Even simpler case: one file _which we've done_.
1227 * Return 1 (finished).
1233 * We're now in the middle of stepping through a list
1234 * of names returned from fxp_readdir(); so let's carry
1237 struct scp_sftp_dirstack
*head
= scp_sftp_dirstack_head
;
1238 while (head
->namepos
< head
->namelen
&&
1239 (is_dots(head
->names
[head
->namepos
].filename
) ||
1241 !wc_match(head
->wildcard
,
1242 head
->names
[head
->namepos
].filename
))))
1243 head
->namepos
++; /* skip . and .. */
1244 if (head
->namepos
< head
->namelen
) {
1245 head
->matched_something
= 1;
1246 fname
= dupcat(head
->dirpath
, "/",
1247 head
->names
[head
->namepos
++].filename
,
1249 must_free_fname
= 1;
1252 * We've come to the end of the list; pop it off
1253 * the stack and return an ENDDIR action (or RETRY
1254 * if this was a wildcard match).
1256 if (head
->wildcard
) {
1257 act
->action
= SCP_SINK_RETRY
;
1258 if (!head
->matched_something
) {
1259 tell_user(stderr
, "pscp: wildcard '%s' matched "
1260 "no files", head
->wildcard
);
1263 sfree(head
->wildcard
);
1266 act
->action
= SCP_SINK_ENDDIR
;
1269 sfree(head
->dirpath
);
1271 scp_sftp_dirstack_head
= head
->next
;
1279 * Now we have a filename. Stat it, and see if it's a file
1282 req
= fxp_stat_send(fname
);
1283 pktin
= sftp_wait_for_reply(req
);
1284 ret
= fxp_stat_recv(pktin
, req
, &attrs
);
1286 if (!ret
|| !(attrs
.flags
& SSH_FILEXFER_ATTR_PERMISSIONS
)) {
1287 tell_user(stderr
, "unable to identify %s: %s", fname
,
1288 ret ?
"file type not supplied" : fxp_error());
1289 if (must_free_fname
) sfree(fname
);
1294 if (attrs
.permissions
& 0040000) {
1295 struct scp_sftp_dirstack
*newitem
;
1296 struct fxp_handle
*dirhandle
;
1297 int nnames
, namesize
;
1298 struct fxp_name
*ournames
;
1299 struct fxp_names
*names
;
1302 * It's a directory. If we're not in recursive mode,
1303 * this merits a complaint (which is fatal if the name
1304 * was specified directly, but not if it was matched by
1307 * We skip this complaint completely if
1308 * scp_sftp_wildcard is set, because that's an
1309 * indication that we're not actually supposed to
1310 * _recursively_ transfer the dir, just scan it for
1311 * things matching the wildcard.
1313 if (!scp_sftp_recursive
&& !scp_sftp_wildcard
) {
1314 tell_user(stderr
, "pscp: %s: is a directory", fname
);
1316 if (must_free_fname
) sfree(fname
);
1317 if (scp_sftp_dirstack_head
) {
1318 act
->action
= SCP_SINK_RETRY
;
1326 * Otherwise, the fun begins. We must fxp_opendir() the
1327 * directory, slurp the filenames into memory, return
1328 * SCP_SINK_DIR (unless this is a wildcard match), and
1329 * set targetisdir. The next time we're called, we will
1330 * run through the list of filenames one by one,
1331 * matching them against a wildcard if present.
1333 * If targetisdir is _already_ set (meaning we're
1334 * already in the middle of going through another such
1335 * list), we must push the other (target,namelist) pair
1338 req
= fxp_opendir_send(fname
);
1339 pktin
= sftp_wait_for_reply(req
);
1340 dirhandle
= fxp_opendir_recv(pktin
, req
);
1343 tell_user(stderr
, "pscp: unable to open directory %s: %s",
1344 fname
, fxp_error());
1345 if (must_free_fname
) sfree(fname
);
1349 nnames
= namesize
= 0;
1354 req
= fxp_readdir_send(dirhandle
);
1355 pktin
= sftp_wait_for_reply(req
);
1356 names
= fxp_readdir_recv(pktin
, req
);
1358 if (names
== NULL
) {
1359 if (fxp_error_type() == SSH_FX_EOF
)
1361 tell_user(stderr
, "pscp: reading directory %s: %s",
1362 fname
, fxp_error());
1364 req
= fxp_close_send(dirhandle
);
1365 pktin
= sftp_wait_for_reply(req
);
1366 fxp_close_recv(pktin
, req
);
1368 if (must_free_fname
) sfree(fname
);
1373 if (names
->nnames
== 0) {
1374 fxp_free_names(names
);
1377 if (nnames
+ names
->nnames
>= namesize
) {
1378 namesize
+= names
->nnames
+ 128;
1379 ournames
= sresize(ournames
, namesize
, struct fxp_name
);
1381 for (i
= 0; i
< names
->nnames
; i
++) {
1382 if (!strcmp(names
->names
[i
].filename
, ".") ||
1383 !strcmp(names
->names
[i
].filename
, "..")) {
1385 * . and .. are normal consequences of
1386 * reading a directory, and aren't worth
1387 * complaining about.
1389 } else if (!vet_filename(names
->names
[i
].filename
)) {
1390 tell_user(stderr
, "ignoring potentially dangerous server-"
1391 "supplied filename '%s'",
1392 names
->names
[i
].filename
);
1394 ournames
[nnames
++] = names
->names
[i
];
1396 names
->nnames
= 0; /* prevent free_names */
1397 fxp_free_names(names
);
1399 req
= fxp_close_send(dirhandle
);
1400 pktin
= sftp_wait_for_reply(req
);
1401 fxp_close_recv(pktin
, req
);
1403 newitem
= snew(struct scp_sftp_dirstack
);
1404 newitem
->next
= scp_sftp_dirstack_head
;
1405 newitem
->names
= ournames
;
1406 newitem
->namepos
= 0;
1407 newitem
->namelen
= nnames
;
1408 if (must_free_fname
)
1409 newitem
->dirpath
= fname
;
1411 newitem
->dirpath
= dupstr(fname
);
1412 if (scp_sftp_wildcard
) {
1413 newitem
->wildcard
= scp_sftp_wildcard
;
1414 newitem
->matched_something
= 0;
1415 scp_sftp_wildcard
= NULL
;
1417 newitem
->wildcard
= NULL
;
1419 scp_sftp_dirstack_head
= newitem
;
1421 if (newitem
->wildcard
) {
1422 act
->action
= SCP_SINK_RETRY
;
1424 act
->action
= SCP_SINK_DIR
;
1425 act
->buf
= dupstr(stripslashes(fname
, 0));
1426 act
->name
= act
->buf
;
1427 act
->size
= uint64_make(0,0); /* duhh, it's a directory */
1428 act
->permissions
= 07777 & attrs
.permissions
;
1429 if (scp_sftp_preserve
&&
1430 (attrs
.flags
& SSH_FILEXFER_ATTR_ACMODTIME
)) {
1431 act
->atime
= attrs
.atime
;
1432 act
->mtime
= attrs
.mtime
;
1441 * It's a file. Return SCP_SINK_FILE.
1443 act
->action
= SCP_SINK_FILE
;
1444 act
->buf
= dupstr(stripslashes(fname
, 0));
1445 act
->name
= act
->buf
;
1446 if (attrs
.flags
& SSH_FILEXFER_ATTR_SIZE
) {
1447 act
->size
= attrs
.size
;
1449 act
->size
= uint64_make(ULONG_MAX
,ULONG_MAX
); /* no idea */
1450 act
->permissions
= 07777 & attrs
.permissions
;
1451 if (scp_sftp_preserve
&&
1452 (attrs
.flags
& SSH_FILEXFER_ATTR_ACMODTIME
)) {
1453 act
->atime
= attrs
.atime
;
1454 act
->mtime
= attrs
.mtime
;
1458 if (must_free_fname
)
1459 scp_sftp_currentname
= fname
;
1461 scp_sftp_currentname
= dupstr(fname
);
1476 if (ssh_scp_recv((unsigned char *) &ch
, 1) <= 0)
1479 bump("Protocol error: Unexpected newline");
1483 if (ssh_scp_recv((unsigned char *) &ch
, 1) <= 0)
1484 bump("Lost connection");
1487 act
->buf
= sresize(act
->buf
, bufsize
, char);
1490 } while (ch
!= '\n');
1491 act
->buf
[i
- 1] = '\0';
1493 case '\01': /* error */
1494 tell_user(stderr
, "%s", act
->buf
);
1496 continue; /* go round again */
1497 case '\02': /* fatal error */
1498 bump("%s", act
->buf
);
1500 back
->send(backhandle
, "", 1);
1501 act
->action
= SCP_SINK_ENDDIR
;
1504 if (sscanf(act
->buf
, "%ld %*d %ld %*d",
1505 &act
->mtime
, &act
->atime
) == 2) {
1507 back
->send(backhandle
, "", 1);
1508 continue; /* go round again */
1510 bump("Protocol error: Illegal time format");
1513 act
->action
= (action
== 'C' ? SCP_SINK_FILE
: SCP_SINK_DIR
);
1516 bump("Protocol error: Expected control record");
1519 * We will go round this loop only once, unless we hit
1526 * If we get here, we must have seen SCP_SINK_FILE or
1532 if (sscanf(act
->buf
, "%lo %s %n", &act
->permissions
,
1534 bump("Protocol error: Illegal file descriptor format");
1535 act
->size
= uint64_from_decimal(sizestr
);
1536 act
->name
= act
->buf
+ i
;
1542 int scp_accept_filexfer(void)
1545 struct sftp_packet
*pktin
;
1546 struct sftp_request
*req
;
1548 req
= fxp_open_send(scp_sftp_currentname
, SSH_FXF_READ
, NULL
);
1549 pktin
= sftp_wait_for_reply(req
);
1550 scp_sftp_filehandle
= fxp_open_recv(pktin
, req
);
1552 if (!scp_sftp_filehandle
) {
1553 tell_user(stderr
, "pscp: unable to open %s: %s",
1554 scp_sftp_currentname
, fxp_error());
1558 scp_sftp_fileoffset
= uint64_make(0, 0);
1559 scp_sftp_xfer
= xfer_download_init(scp_sftp_filehandle
,
1560 scp_sftp_fileoffset
);
1561 sfree(scp_sftp_currentname
);
1564 back
->send(backhandle
, "", 1);
1565 return 0; /* can't fail */
1569 int scp_recv_filedata(char *data
, int len
)
1572 struct sftp_packet
*pktin
;
1576 xfer_download_queue(scp_sftp_xfer
);
1577 pktin
= sftp_recv();
1578 ret
= xfer_download_gotpkt(scp_sftp_xfer
, pktin
);
1580 tell_user(stderr
, "pscp: error while reading: %s", fxp_error());
1581 if (ret
== INT_MIN
) /* pktin not even freed */
1587 if (xfer_download_data(scp_sftp_xfer
, &vbuf
, &actuallen
)) {
1589 * This assertion relies on the fact that the natural
1590 * block size used in the xfer manager is at most that
1591 * used in this module. I don't like crossing layers in
1592 * this way, but it'll do for now.
1594 assert(actuallen
<= len
);
1595 memcpy(data
, vbuf
, actuallen
);
1600 scp_sftp_fileoffset
= uint64_add32(scp_sftp_fileoffset
, actuallen
);
1604 return ssh_scp_recv((unsigned char *) data
, len
);
1608 int scp_finish_filerecv(void)
1611 struct sftp_packet
*pktin
;
1612 struct sftp_request
*req
;
1615 * Ensure that xfer_done() will work correctly, so we can
1616 * clean up any outstanding requests from the file
1619 xfer_set_error(scp_sftp_xfer
);
1620 while (!xfer_done(scp_sftp_xfer
)) {
1624 pktin
= sftp_recv();
1625 ret
= xfer_download_gotpkt(scp_sftp_xfer
, pktin
);
1627 tell_user(stderr
, "pscp: error while reading: %s", fxp_error());
1628 if (ret
== INT_MIN
) /* pktin not even freed */
1633 if (xfer_download_data(scp_sftp_xfer
, &vbuf
, &len
))
1636 xfer_cleanup(scp_sftp_xfer
);
1638 req
= fxp_close_send(scp_sftp_filehandle
);
1639 pktin
= sftp_wait_for_reply(req
);
1640 fxp_close_recv(pktin
, req
);
1643 back
->send(backhandle
, "", 1);
1648 /* ----------------------------------------------------------------------
1649 * Send an error message to the other side and to the screen.
1650 * Increment error counter.
1652 static void run_err(const char *fmt
, ...)
1658 str
= dupvprintf(fmt
, ap
);
1659 str2
= dupcat("pscp: ", str
, "\n", NULL
);
1661 scp_send_errmsg(str2
);
1662 tell_user(stderr
, "%s", str2
);
1668 * Execute the source part of the SCP protocol.
1670 static void source(char *src
)
1673 unsigned long mtime
, atime
;
1680 time_t stat_starttime
, stat_lasttime
;
1682 attr
= file_type(src
);
1683 if (attr
== FILE_TYPE_NONEXISTENT
||
1684 attr
== FILE_TYPE_WEIRD
) {
1685 run_err("%s: %s file or directory", src
,
1686 (attr
== FILE_TYPE_WEIRD ?
"Not a" : "No such"));
1690 if (attr
== FILE_TYPE_DIRECTORY
) {
1693 * Avoid . and .. directories.
1696 p
= strrchr(src
, '/');
1698 p
= strrchr(src
, '\\');
1703 if (!strcmp(p
, ".") || !strcmp(p
, ".."))
1704 /* skip . and .. */ ;
1708 run_err("%s: not a regular file", src
);
1713 if ((last
= strrchr(src
, '/')) == NULL
)
1717 if (strrchr(last
, '\\') != NULL
)
1718 last
= strrchr(last
, '\\') + 1;
1719 if (last
== src
&& strchr(src
, ':') != NULL
)
1720 last
= strchr(src
, ':') + 1;
1722 f
= open_existing_file(src
, &size
, &mtime
, &atime
, &permissions
);
1724 run_err("%s: Cannot open file", src
);
1728 if (scp_send_filetimes(mtime
, atime
)) {
1736 uint64_decimal(size
, sizestr
);
1737 tell_user(stderr
, "Sending file %s, size=%s", last
, sizestr
);
1739 if (scp_send_filename(last
, size
, permissions
)) {
1744 stat_bytes
= uint64_make(0,0);
1745 stat_starttime
= time(NULL
);
1748 for (i
= uint64_make(0,0);
1749 uint64_compare(i
,size
) < 0;
1750 i
= uint64_add32(i
,4096)) {
1751 char transbuf
[4096];
1754 if (uint64_compare(uint64_add32(i
, k
),size
) > 0) /* i + k > size */
1755 k
= (uint64_subtract(size
, i
)).lo
; /* k = size - i; */
1756 if ((j
= read_from_file(f
, transbuf
, k
)) != k
) {
1759 bump("%s: Read error", src
);
1761 if (scp_send_filedata(transbuf
, k
))
1762 bump("%s: Network error occurred", src
);
1765 stat_bytes
= uint64_add32(stat_bytes
, k
);
1766 if (time(NULL
) != stat_lasttime
||
1767 (uint64_compare(uint64_add32(i
, k
), size
) == 0)) {
1768 stat_lasttime
= time(NULL
);
1769 print_stats(last
, size
, stat_bytes
,
1770 stat_starttime
, stat_lasttime
);
1777 (void) scp_send_finish();
1781 * Recursively send the contents of a directory.
1783 static void rsource(char *src
)
1789 if ((last
= strrchr(src
, '/')) == NULL
)
1793 if (strrchr(last
, '\\') != NULL
)
1794 last
= strrchr(last
, '\\') + 1;
1795 if (last
== src
&& strchr(src
, ':') != NULL
)
1796 last
= strchr(src
, ':') + 1;
1798 /* maybe send filetime */
1800 save_target
= scp_save_remotepath();
1803 tell_user(stderr
, "Entering directory: %s", last
);
1804 if (scp_send_dirname(last
, 0755))
1807 dir
= open_directory(src
);
1810 while ((filename
= read_filename(dir
)) != NULL
) {
1811 char *foundfile
= dupcat(src
, "/", filename
, NULL
);
1817 close_directory(dir
);
1819 (void) scp_send_enddir();
1821 scp_restore_remotepath(save_target
);
1825 * Execute the sink part of the SCP protocol.
1827 static void sink(char *targ
, char *src
)
1837 time_t stat_starttime
, stat_lasttime
;
1840 attr
= file_type(targ
);
1841 if (attr
== FILE_TYPE_DIRECTORY
)
1844 if (targetshouldbedirectory
&& !targisdir
)
1845 bump("%s: Not a directory", targ
);
1849 struct scp_sink_action act
;
1850 if (scp_get_sink_action(&act
))
1853 if (act
.action
== SCP_SINK_ENDDIR
)
1856 if (act
.action
== SCP_SINK_RETRY
)
1861 * Prevent the remote side from maliciously writing to
1862 * files outside the target area by sending a filename
1863 * containing `../'. In fact, it shouldn't be sending
1864 * filenames with any slashes or colons in at all; so
1865 * we'll find the last slash, backslash or colon in the
1866 * filename and use only the part after that. (And
1869 * In addition, we also ensure here that if we're
1870 * copying a single file and the target is a directory
1871 * (common usage: `pscp host:filename .') the remote
1872 * can't send us a _different_ file name. We can
1873 * distinguish this case because `src' will be non-NULL
1874 * and the last component of that will fail to match
1875 * (the last component of) the name sent.
1877 * Well, not always; if `src' is a wildcard, we do
1878 * expect to get back filenames that don't correspond
1879 * exactly to it. Ideally in this case, we would like
1880 * to ensure that the returned filename actually
1881 * matches the wildcard pattern - but one of SCP's
1882 * protocol infelicities is that wildcard matching is
1883 * done at the server end _by the server's rules_ and
1884 * so in general this is infeasible. Hence, we only
1885 * accept filenames that don't correspond to `src' if
1886 * unsafe mode is enabled or we are using SFTP (which
1887 * resolves remote wildcards on the client side and can
1890 char *striptarget
, *stripsrc
;
1892 striptarget
= stripslashes(act
.name
, 1);
1893 if (striptarget
!= act
.name
) {
1894 tell_user(stderr
, "warning: remote host sent a compound"
1895 " pathname '%s'", act
.name
);
1896 tell_user(stderr
, " renaming local file to '%s'",
1901 * Also check to see if the target filename is '.' or
1902 * '..', or indeed '...' and so on because Windows
1903 * appears to interpret those like '..'.
1905 if (is_dots(striptarget
)) {
1906 bump("security violation: remote host attempted to write to"
1907 " a '.' or '..' path!");
1911 stripsrc
= stripslashes(src
, 1);
1912 if (strcmp(striptarget
, stripsrc
) &&
1913 !using_sftp
&& !scp_unsafe_mode
) {
1914 tell_user(stderr
, "warning: remote host tried to write "
1915 "to a file called '%s'", striptarget
);
1916 tell_user(stderr
, " when we requested a file "
1917 "called '%s'.", stripsrc
);
1918 tell_user(stderr
, " If this is a wildcard, "
1919 "consider upgrading to SSH-2 or using");
1920 tell_user(stderr
, " the '-unsafe' option. Renaming"
1921 " of this file has been disallowed.");
1922 /* Override the name the server provided with our own. */
1923 striptarget
= stripsrc
;
1927 if (targ
[0] != '\0')
1928 destfname
= dir_file_cat(targ
, striptarget
);
1930 destfname
= dupstr(striptarget
);
1933 * In this branch of the if, the target area is a
1934 * single file with an explicitly specified name in any
1935 * case, so there's no danger.
1937 destfname
= dupstr(targ
);
1939 attr
= file_type(destfname
);
1940 exists
= (attr
!= FILE_TYPE_NONEXISTENT
);
1942 if (act
.action
== SCP_SINK_DIR
) {
1943 if (exists
&& attr
!= FILE_TYPE_DIRECTORY
) {
1944 run_err("%s: Not a directory", destfname
);
1949 if (!create_directory(destfname
)) {
1950 run_err("%s: Cannot create directory", destfname
);
1955 sink(destfname
, NULL
);
1956 /* can we set the timestamp for directories ? */
1961 f
= open_new_file(destfname
, act
.permissions
);
1963 run_err("%s: Cannot create file", destfname
);
1968 if (scp_accept_filexfer()) {
1974 stat_bytes
= uint64_make(0, 0);
1975 stat_starttime
= time(NULL
);
1977 stat_name
= stripslashes(destfname
, 1);
1979 received
= uint64_make(0, 0);
1980 while (uint64_compare(received
,act
.size
) < 0) {
1981 char transbuf
[32768];
1984 blksize
= uint64_make(0, 32768);
1985 if (uint64_compare(blksize
,uint64_subtract(act
.size
,received
)) > 0)
1986 blksize
= uint64_subtract(act
.size
,received
);
1987 read
= scp_recv_filedata(transbuf
, (int)blksize
.lo
);
1989 bump("Lost connection");
1992 if (write_to_file(f
, transbuf
, read
) != (int)read
) {
1994 /* FIXME: in sftp we can actually abort the transfer */
1996 printf("\r%-25.25s | %50s\n",
1998 "Write error.. waiting for end of file");
2002 stat_bytes
= uint64_add32(stat_bytes
,read
);
2003 if (time(NULL
) > stat_lasttime
||
2004 uint64_compare(uint64_add32(received
, read
), act
.size
) == 0) {
2005 stat_lasttime
= time(NULL
);
2006 print_stats(stat_name
, act
.size
, stat_bytes
,
2007 stat_starttime
, stat_lasttime
);
2010 received
= uint64_add32(received
, read
);
2013 set_file_times(f
, act
.mtime
, act
.atime
);
2019 run_err("%s: Write error", destfname
);
2023 (void) scp_finish_filerecv();
2030 * We will copy local files to a remote server.
2032 static void toremote(int argc
, char *argv
[])
2034 char *src
, *targ
, *host
, *user
;
2038 targ
= argv
[argc
- 1];
2040 /* Separate host from filename */
2044 bump("targ == NULL in toremote()");
2048 /* Substitute "." for empty target */
2050 /* Separate host and username */
2052 host
= strrchr(host
, '@');
2063 if (colon(argv
[0]) != NULL
)
2064 bump("%s: Remote to remote not supported", argv
[0]);
2066 wc_type
= test_wildcard(argv
[0], 1);
2067 if (wc_type
== WCTYPE_NONEXISTENT
)
2068 bump("%s: No such file or directory\n", argv
[0]);
2069 else if (wc_type
== WCTYPE_WILDCARD
)
2070 targetshouldbedirectory
= 1;
2073 cmd
= dupprintf("scp%s%s%s%s -t %s",
2074 verbose ?
" -v" : "",
2075 recursive ?
" -r" : "",
2076 preserve ?
" -p" : "",
2077 targetshouldbedirectory ?
" -d" : "", targ
);
2078 do_cmd(host
, user
, cmd
);
2081 if (scp_source_setup(targ
, targetshouldbedirectory
))
2084 for (i
= 0; i
< argc
- 1; i
++) {
2086 if (colon(src
) != NULL
) {
2087 tell_user(stderr
, "%s: Remote to remote not supported\n", src
);
2092 wc_type
= test_wildcard(src
, 1);
2093 if (wc_type
== WCTYPE_NONEXISTENT
) {
2094 run_err("%s: No such file or directory", src
);
2096 } else if (wc_type
== WCTYPE_FILENAME
) {
2100 WildcardMatcher
*wc
;
2103 wc
= begin_wildcard_matching(src
);
2105 run_err("%s: No such file or directory", src
);
2109 while ((filename
= wildcard_get_filename(wc
)) != NULL
) {
2114 finish_wildcard_matching(wc
);
2120 * We will copy files from a remote server to the local machine.
2122 static void tolocal(int argc
, char *argv
[])
2124 char *src
, *targ
, *host
, *user
;
2128 bump("More than one remote source not supported");
2133 /* Separate host from filename */
2137 bump("Local to local copy not supported");
2141 /* Substitute "." for empty filename */
2143 /* Separate username and hostname */
2145 host
= strrchr(host
, '@');
2155 cmd
= dupprintf("scp%s%s%s%s -f %s",
2156 verbose ?
" -v" : "",
2157 recursive ?
" -r" : "",
2158 preserve ?
" -p" : "",
2159 targetshouldbedirectory ?
" -d" : "", src
);
2160 do_cmd(host
, user
, cmd
);
2163 if (scp_sink_setup(src
, preserve
, recursive
))
2170 * We will issue a list command to get a remote directory.
2172 static void get_dir_list(int argc
, char *argv
[])
2174 char *src
, *host
, *user
;
2180 /* Separate host from filename */
2184 bump("Local file listing not supported");
2188 /* Substitute "." for empty filename */
2190 /* Separate username and hostname */
2192 host
= strrchr(host
, '@');
2202 cmd
= snewn(4 * strlen(src
) + 100, char);
2203 strcpy(cmd
, "ls -la '");
2204 p
= cmd
+ strlen(cmd
);
2205 for (q
= src
; *q
; q
++) {
2218 do_cmd(host
, user
, cmd
);
2222 scp_sftp_listdir(src
);
2224 while (ssh_scp_recv((unsigned char *) &c
, 1) > 0)
2225 tell_char(stdout
, c
);
2230 * Short description of parameters.
2232 static void usage(void)
2234 printf("PuTTY Secure Copy client\n");
2235 printf("%s\n", ver
);
2236 printf("Usage: pscp [options] [user@]host:source target\n");
2238 (" pscp [options] source [source...] [user@]host:target\n");
2239 printf(" pscp [options] -ls [user@]host:filespec\n");
2240 printf("Options:\n");
2241 printf(" -V print version information and exit\n");
2242 printf(" -pgpfp print PGP key fingerprints and exit\n");
2243 printf(" -p preserve file attributes\n");
2244 printf(" -q quiet, don't show statistics\n");
2245 printf(" -r copy directories recursively\n");
2246 printf(" -v show verbose messages\n");
2247 printf(" -load sessname Load settings from saved session\n");
2248 printf(" -P port connect to specified port\n");
2249 printf(" -l user connect with specified username\n");
2250 printf(" -pw passw login with specified password\n");
2251 printf(" -1 -2 force use of particular SSH protocol version\n");
2252 printf(" -4 -6 force use of IPv4 or IPv6\n");
2253 printf(" -C enable compression\n");
2254 printf(" -i key private key file for authentication\n");
2255 printf(" -noagent disable use of Pageant\n");
2256 printf(" -agent enable use of Pageant\n");
2257 printf(" -batch disable all interactive prompts\n");
2258 printf(" -unsafe allow server-side wildcards (DANGEROUS)\n");
2259 printf(" -sftp force use of SFTP protocol\n");
2260 printf(" -scp force use of SCP protocol\n");
2263 * -gui is an internal option, used by GUI front ends to get
2264 * pscp to pass progress reports back to them. It's not an
2265 * ordinary user-accessible option, so it shouldn't be part of
2266 * the command-line help. The only people who need to know
2267 * about it are programmers, and they can read the source.
2270 (" -gui hWnd GUI mode with the windows handle for receiving messages\n");
2277 printf("pscp: %s\n", ver
);
2281 void cmdline_error(char *p
, ...)
2284 fprintf(stderr
, "pscp: ");
2286 vfprintf(stderr
, p
, ap
);
2288 fprintf(stderr
, "\n try typing just \"pscp\" for help\n");
2293 * Main program. (Called `psftp_main' because it gets called from
2294 * *sftp.c; bit silly, I know, but it had to be called _something_.)
2296 int psftp_main(int argc
, char *argv
[])
2300 default_protocol
= PROT_TELNET
;
2303 #ifdef FLAG_SYNCAGENT
2307 cmdline_tooltype
= TOOLTYPE_FILETRANSFER
;
2310 /* Load Default Settings before doing anything else. */
2312 do_defaults(NULL
, conf
);
2313 loaded_session
= FALSE
;
2315 for (i
= 1; i
< argc
; i
++) {
2317 if (argv
[i
][0] != '-')
2319 ret
= cmdline_process_param(argv
[i
], i
+1<argc?argv
[i
+1]:NULL
, 1, conf
);
2321 cmdline_error("option \"%s\" requires an argument", argv
[i
]);
2322 } else if (ret
== 2) {
2323 i
++; /* skip next argument */
2324 } else if (ret
== 1) {
2325 /* We have our own verbosity in addition to `flags'. */
2326 if (flags
& FLAG_VERBOSE
)
2328 } else if (strcmp(argv
[i
], "-pgpfp") == 0) {
2331 } else if (strcmp(argv
[i
], "-r") == 0) {
2333 } else if (strcmp(argv
[i
], "-p") == 0) {
2335 } else if (strcmp(argv
[i
], "-q") == 0) {
2337 } else if (strcmp(argv
[i
], "-h") == 0 ||
2338 strcmp(argv
[i
], "-?") == 0 ||
2339 strcmp(argv
[i
], "--help") == 0) {
2341 } else if (strcmp(argv
[i
], "-V") == 0 ||
2342 strcmp(argv
[i
], "--version") == 0) {
2344 } else if (strcmp(argv
[i
], "-ls") == 0) {
2346 } else if (strcmp(argv
[i
], "-batch") == 0) {
2347 console_batch_mode
= 1;
2348 } else if (strcmp(argv
[i
], "-unsafe") == 0) {
2349 scp_unsafe_mode
= 1;
2350 } else if (strcmp(argv
[i
], "-sftp") == 0) {
2351 try_scp
= 0; try_sftp
= 1;
2352 } else if (strcmp(argv
[i
], "-scp") == 0) {
2353 try_scp
= 1; try_sftp
= 0;
2354 } else if (strcmp(argv
[i
], "--") == 0) {
2358 cmdline_error("unknown option \"%s\"", argv
[i
]);
2368 get_dir_list(argc
, argv
);
2375 targetshouldbedirectory
= 1;
2377 if (colon(argv
[argc
- 1]) != NULL
)
2378 toremote(argc
, argv
);
2380 tolocal(argc
, argv
);
2383 if (back
!= NULL
&& back
->connected(backhandle
)) {
2385 back
->special(backhandle
, TS_EOF
);
2387 ssh_scp_recv((unsigned char *) &ch
, 1);
2392 console_provide_logctx(NULL
);
2393 back
->free(backhandle
);
2397 return (errs
== 0 ?
0 : 1);