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 if (fwrite(data
, 1, len
, stderr
) < len
)
186 if ((outlen
> 0) && (len
> 0)) {
187 unsigned used
= outlen
;
190 memcpy(outptr
, p
, used
);
198 if (pendsize
< pendlen
+ len
) {
199 pendsize
= pendlen
+ len
+ 4096;
200 pending
= sresize(pending
, pendsize
, unsigned char);
202 memcpy(pending
+ pendlen
, p
, len
);
208 int from_backend_untrusted(void *frontend_handle
, const char *data
, int len
)
211 * No "untrusted" output should get here (the way the code is
212 * currently, it's all diverted by FLAG_STDERR).
214 assert(!"Unexpected call to from_backend_untrusted()");
215 return 0; /* not reached */
217 static int ssh_scp_recv(unsigned char *buf
, int len
)
223 * See if the pending-input block contains some of what we
227 unsigned pendused
= pendlen
;
228 if (pendused
> outlen
)
230 memcpy(outptr
, pending
, pendused
);
231 memmove(pending
, pending
+ pendused
, pendlen
- pendused
);
245 if (back
->exitcode(backhandle
) >= 0 || ssh_sftp_loop_iteration() < 0)
253 * Loop through the ssh connection and authentication process.
255 static void ssh_scp_init(void)
257 while (!back
->sendok(backhandle
)) {
258 if (back
->exitcode(backhandle
) >= 0) {
262 if (ssh_sftp_loop_iteration() < 0) {
268 /* Work out which backend we ended up using. */
269 if (!ssh_fallback_cmd(backhandle
))
270 using_sftp
= main_cmd_is_sftp
;
272 using_sftp
= fallback_cmd_is_sftp
;
276 tell_user(stderr
, "Using SFTP");
278 tell_user(stderr
, "Using SCP1");
283 * Print an error message and exit after closing the SSH link.
285 static void bump(char *fmt
, ...)
290 str
= dupvprintf(fmt
, ap
);
292 str2
= dupcat(str
, "\n", NULL
);
294 tell_str(stderr
, str2
);
298 if (back
!= NULL
&& back
->connected(backhandle
)) {
300 back
->special(backhandle
, TS_EOF
);
301 ssh_scp_recv((unsigned char *) &ch
, 1);
308 * Open an SSH connection to user@host and execute cmd.
310 static void do_cmd(char *host
, char *user
, char *cmd
)
316 if (host
== NULL
|| host
[0] == '\0')
317 bump("Empty host name");
320 * Remove fiddly bits of address: remove a colon suffix, and
321 * the square brackets around an IPv6 literal address.
323 if (host
[0] == '[') {
325 host
[strcspn(host
, "]")] = '\0';
327 host
[strcspn(host
, ":")] = '\0';
331 * If we haven't loaded session details already (e.g., from -load),
332 * try looking for a session called "host".
334 if (!loaded_session
) {
335 /* Try to load settings for `host' into a temporary config */
336 Conf
*conf2
= conf_new();
337 conf_set_str(conf2
, CONF_host
, "");
338 do_defaults(host
, conf2
);
339 if (conf_get_str(conf2
, CONF_host
)[0] != '\0') {
340 /* Settings present and include hostname */
341 /* Re-load data into the real config. */
342 do_defaults(host
, conf
);
344 /* Session doesn't exist or mention a hostname. */
345 /* Use `host' as a bare hostname. */
346 conf_set_str(conf
, CONF_host
, host
);
349 /* Patch in hostname `host' to session details. */
350 conf_set_str(conf
, CONF_host
, host
);
354 * Force use of SSH. (If they got the protocol wrong we assume the
355 * port is useless too.)
357 if (conf_get_int(conf
, CONF_protocol
) != PROT_SSH
) {
358 conf_set_int(conf
, CONF_protocol
, PROT_SSH
);
359 conf_set_int(conf
, CONF_port
, 22);
363 * Enact command-line overrides.
365 cmdline_run_saved(conf
);
368 * Muck about with the hostname in various ways.
371 char *hostbuf
= dupstr(conf_get_str(conf
, CONF_host
));
372 char *host
= hostbuf
;
376 * Trim leading whitespace.
378 host
+= strspn(host
, " \t");
381 * See if host is of the form user@host, and separate out
382 * the username if so.
384 if (host
[0] != '\0') {
385 char *atsign
= strrchr(host
, '@');
388 conf_set_str(conf
, CONF_username
, host
);
394 * Remove any remaining whitespace.
399 if (*q
!= ' ' && *q
!= '\t')
405 conf_set_str(conf
, CONF_host
, hostbuf
);
410 if (user
!= NULL
&& user
[0] != '\0') {
411 conf_set_str(conf
, CONF_username
, user
);
412 } else if (conf_get_str(conf
, CONF_username
)[0] == '\0') {
413 user
= get_username();
415 bump("Empty user name");
418 tell_user(stderr
, "Guessing user name: %s", user
);
419 conf_set_str(conf
, CONF_username
, user
);
425 * Disable scary things which shouldn't be enabled for simple
426 * things like SCP and SFTP: agent forwarding, port forwarding,
429 conf_set_int(conf
, CONF_x11_forward
, 0);
430 conf_set_int(conf
, CONF_agentfwd
, 0);
431 conf_set_int(conf
, CONF_ssh_simple
, TRUE
);
434 while ((key
= conf_get_str_nthstrkey(conf
, CONF_portfwd
, 0)) != NULL
)
435 conf_del_str_str(conf
, CONF_portfwd
, key
);
439 * Set up main and possibly fallback command depending on
440 * options specified by user.
441 * Attempt to start the SFTP subsystem as a first choice,
442 * falling back to the provided scp command if that fails.
444 conf_set_str(conf
, CONF_remote_cmd2
, "");
446 /* First choice is SFTP subsystem. */
447 main_cmd_is_sftp
= 1;
448 conf_set_str(conf
, CONF_remote_cmd
, "sftp");
449 conf_set_int(conf
, CONF_ssh_subsys
, TRUE
);
451 /* Fallback is to use the provided scp command. */
452 fallback_cmd_is_sftp
= 0;
453 conf_set_str(conf
, CONF_remote_cmd2
, "sftp");
454 conf_set_int(conf
, CONF_ssh_subsys2
, FALSE
);
456 /* Since we're not going to try SCP, we may as well try
457 * harder to find an SFTP server, since in the current
458 * implementation we have a spare slot. */
459 fallback_cmd_is_sftp
= 1;
460 /* see psftp.c for full explanation of this kludge */
461 conf_set_str(conf
, CONF_remote_cmd2
,
462 "test -x /usr/lib/sftp-server &&"
463 " exec /usr/lib/sftp-server\n"
464 "test -x /usr/local/lib/sftp-server &&"
465 " exec /usr/local/lib/sftp-server\n"
467 conf_set_int(conf
, CONF_ssh_subsys2
, FALSE
);
470 /* Don't try SFTP at all; just try the scp command. */
471 main_cmd_is_sftp
= 0;
472 conf_set_str(conf
, CONF_remote_cmd
, cmd
);
473 conf_set_int(conf
, CONF_ssh_subsys
, FALSE
);
475 conf_set_int(conf
, CONF_nopty
, TRUE
);
479 err
= back
->init(NULL
, &backhandle
, conf
,
480 conf_get_str(conf
, CONF_host
),
481 conf_get_int(conf
, CONF_port
),
483 conf_get_int(conf
, CONF_tcp_keepalives
));
485 bump("ssh_init: %s", err
);
486 logctx
= log_init(NULL
, conf
);
487 back
->provide_logctx(backhandle
, logctx
);
488 console_provide_logctx(logctx
);
490 if (verbose
&& realhost
!= NULL
&& errs
== 0)
491 tell_user(stderr
, "Connected to %s\n", realhost
);
496 * Update statistic information about current file.
498 static void print_stats(char *name
, uint64 size
, uint64 done
,
499 time_t start
, time_t now
)
510 elap
= (unsigned long) difftime(now
, start
);
513 ratebs
= (float) (uint64_to_double(done
) / elap
);
515 ratebs
= (float) uint64_to_double(done
);
518 eta
= (unsigned long) (uint64_to_double(uint64_subtract(size
, done
)));
520 eta
= (unsigned long)
521 ((uint64_to_double(uint64_subtract(size
, done
)) / ratebs
));
524 etastr
= dupprintf("%02ld:%02ld:%02ld",
525 eta
/ 3600, (eta
% 3600) / 60, eta
% 60);
527 donedbl
= uint64_to_double(done
);
528 sizedbl
= uint64_to_double(size
);
529 pct
= (int) (100 * (donedbl
* 1.0 / sizedbl
));
533 /* divide by 1024 to provide kB */
534 uint64_decimal(uint64_shift_right(done
, 10), donekb
);
535 len
= printf("\r%-25.25s | %s kB | %5.1f kB/s | ETA: %8s | %3d%%",
537 donekb
, ratebs
/ 1024.0, etastr
, pct
);
538 if (len
< prev_stats_len
)
539 printf("%*s", prev_stats_len
- len
, "");
540 prev_stats_len
= len
;
542 if (uint64_compare(done
, size
) == 0)
552 * Find a colon in str and return a pointer to the colon.
553 * This is used to separate hostname from filename.
555 static char *colon(char *str
)
557 /* We ignore a leading colon, since the hostname cannot be
558 empty. We also ignore a colon as second character because
559 of filenames like f:myfile.txt. */
560 if (str
[0] == '\0' || str
[0] == ':' ||
561 (str
[0] != '[' && str
[1] == ':'))
563 while (*str
!= '\0' && *str
!= ':' && *str
!= '/' && *str
!= '\\') {
565 /* Skip over IPv6 literal addresses
566 * (eg: 'jeroen@[2001:db8::1]:myfile.txt') */
567 char *ipv6_end
= strchr(str
, ']');
581 * Return a pointer to the portion of str that comes after the last
582 * slash (or backslash or colon, if `local' is TRUE).
584 static char *stripslashes(char *str
, int local
)
589 p
= strchr(str
, ':');
593 p
= strrchr(str
, '/');
597 p
= strrchr(str
, '\\');
605 * Determine whether a string is entirely composed of dots.
607 static int is_dots(char *str
)
609 return str
[strspn(str
, ".")] == '\0';
613 * Wait for a response from the other side.
614 * Return 0 if ok, -1 if error.
616 static int response(void)
618 char ch
, resp
, rbuf
[2048];
621 if (ssh_scp_recv((unsigned char *) &resp
, 1) <= 0)
622 bump("Lost connection");
632 case 2: /* fatal error */
634 if (ssh_scp_recv((unsigned char *) &ch
, 1) <= 0)
635 bump("Protocol error: Lost connection");
637 } while (p
< sizeof(rbuf
) && ch
!= '\n');
640 tell_user(stderr
, "%s\n", rbuf
);
648 int sftp_recvdata(char *buf
, int len
)
650 return ssh_scp_recv((unsigned char *) buf
, len
);
652 int sftp_senddata(char *buf
, int len
)
654 back
->send(backhandle
, buf
, len
);
658 /* ----------------------------------------------------------------------
659 * sftp-based replacement for the hacky `pscp -ls'.
661 static int sftp_ls_compare(const void *av
, const void *bv
)
663 const struct fxp_name
*a
= (const struct fxp_name
*) av
;
664 const struct fxp_name
*b
= (const struct fxp_name
*) bv
;
665 return strcmp(a
->filename
, b
->filename
);
667 void scp_sftp_listdir(char *dirname
)
669 struct fxp_handle
*dirh
;
670 struct fxp_names
*names
;
671 struct fxp_name
*ournames
;
672 struct sftp_packet
*pktin
;
673 struct sftp_request
*req
, *rreq
;
674 int nnames
, namesize
;
678 tell_user(stderr
, "unable to initialise SFTP: %s", fxp_error());
683 printf("Listing directory %s\n", dirname
);
685 sftp_register(req
= fxp_opendir_send(dirname
));
686 rreq
= sftp_find_request(pktin
= sftp_recv());
688 dirh
= fxp_opendir_recv(pktin
, rreq
);
691 printf("Unable to open %s: %s\n", dirname
, fxp_error());
693 nnames
= namesize
= 0;
698 sftp_register(req
= fxp_readdir_send(dirh
));
699 rreq
= sftp_find_request(pktin
= sftp_recv());
701 names
= fxp_readdir_recv(pktin
, rreq
);
704 if (fxp_error_type() == SSH_FX_EOF
)
706 printf("Reading directory %s: %s\n", dirname
, fxp_error());
709 if (names
->nnames
== 0) {
710 fxp_free_names(names
);
714 if (nnames
+ names
->nnames
>= namesize
) {
715 namesize
+= names
->nnames
+ 128;
716 ournames
= sresize(ournames
, namesize
, struct fxp_name
);
719 for (i
= 0; i
< names
->nnames
; i
++)
720 ournames
[nnames
++] = names
->names
[i
];
721 names
->nnames
= 0; /* prevent free_names */
722 fxp_free_names(names
);
724 sftp_register(req
= fxp_close_send(dirh
));
725 rreq
= sftp_find_request(pktin
= sftp_recv());
727 fxp_close_recv(pktin
, rreq
);
730 * Now we have our filenames. Sort them by actual file
731 * name, and then output the longname parts.
733 qsort(ournames
, nnames
, sizeof(*ournames
), sftp_ls_compare
);
738 for (i
= 0; i
< nnames
; i
++)
739 printf("%s\n", ournames
[i
].longname
);
743 /* ----------------------------------------------------------------------
744 * Helper routines that contain the actual SCP protocol elements,
745 * implemented both as SCP1 and SFTP.
748 static struct scp_sftp_dirstack
{
749 struct scp_sftp_dirstack
*next
;
750 struct fxp_name
*names
;
751 int namepos
, namelen
;
754 int matched_something
; /* wildcard match set was non-empty */
755 } *scp_sftp_dirstack_head
;
756 static char *scp_sftp_remotepath
, *scp_sftp_currentname
;
757 static char *scp_sftp_wildcard
;
758 static int scp_sftp_targetisdir
, scp_sftp_donethistarget
;
759 static int scp_sftp_preserve
, scp_sftp_recursive
;
760 static unsigned long scp_sftp_mtime
, scp_sftp_atime
;
761 static int scp_has_times
;
762 static struct fxp_handle
*scp_sftp_filehandle
;
763 static struct fxp_xfer
*scp_sftp_xfer
;
764 static uint64 scp_sftp_fileoffset
;
766 int scp_source_setup(char *target
, int shouldbedir
)
770 * Find out whether the target filespec is in fact a
773 struct sftp_packet
*pktin
;
774 struct sftp_request
*req
, *rreq
;
775 struct fxp_attrs attrs
;
779 tell_user(stderr
, "unable to initialise SFTP: %s", fxp_error());
784 sftp_register(req
= fxp_stat_send(target
));
785 rreq
= sftp_find_request(pktin
= sftp_recv());
787 ret
= fxp_stat_recv(pktin
, rreq
, &attrs
);
789 if (!ret
|| !(attrs
.flags
& SSH_FILEXFER_ATTR_PERMISSIONS
))
790 scp_sftp_targetisdir
= 0;
792 scp_sftp_targetisdir
= (attrs
.permissions
& 0040000) != 0;
794 if (shouldbedir
&& !scp_sftp_targetisdir
) {
795 bump("pscp: remote filespec %s: not a directory\n", target
);
798 scp_sftp_remotepath
= dupstr(target
);
807 int scp_send_errmsg(char *str
)
810 /* do nothing; we never need to send our errors to the server */
812 back
->send(backhandle
, "\001", 1);/* scp protocol error prefix */
813 back
->send(backhandle
, str
, strlen(str
));
815 return 0; /* can't fail */
818 int scp_send_filetimes(unsigned long mtime
, unsigned long atime
)
821 scp_sftp_mtime
= mtime
;
822 scp_sftp_atime
= atime
;
827 sprintf(buf
, "T%lu 0 %lu 0\n", mtime
, atime
);
828 back
->send(backhandle
, buf
, strlen(buf
));
833 int scp_send_filename(char *name
, uint64 size
, int modes
)
837 struct sftp_packet
*pktin
;
838 struct sftp_request
*req
, *rreq
;
840 if (scp_sftp_targetisdir
) {
841 fullname
= dupcat(scp_sftp_remotepath
, "/", name
, NULL
);
843 fullname
= dupstr(scp_sftp_remotepath
);
846 sftp_register(req
= fxp_open_send(fullname
, SSH_FXF_WRITE
|
847 SSH_FXF_CREAT
| SSH_FXF_TRUNC
));
848 rreq
= sftp_find_request(pktin
= sftp_recv());
850 scp_sftp_filehandle
= fxp_open_recv(pktin
, rreq
);
852 if (!scp_sftp_filehandle
) {
853 tell_user(stderr
, "pscp: unable to open %s: %s",
854 fullname
, fxp_error());
858 scp_sftp_fileoffset
= uint64_make(0, 0);
859 scp_sftp_xfer
= xfer_upload_init(scp_sftp_filehandle
,
860 scp_sftp_fileoffset
);
866 uint64_decimal(size
, sizestr
);
867 sprintf(buf
, "C%04o %s ", modes
, sizestr
);
868 back
->send(backhandle
, buf
, strlen(buf
));
869 back
->send(backhandle
, name
, strlen(name
));
870 back
->send(backhandle
, "\n", 1);
875 int scp_send_filedata(char *data
, int len
)
879 struct sftp_packet
*pktin
;
881 if (!scp_sftp_filehandle
) {
885 while (!xfer_upload_ready(scp_sftp_xfer
)) {
887 ret
= xfer_upload_gotpkt(scp_sftp_xfer
, pktin
);
889 tell_user(stderr
, "error while writing: %s\n", fxp_error());
895 xfer_upload_data(scp_sftp_xfer
, data
, len
);
897 scp_sftp_fileoffset
= uint64_add32(scp_sftp_fileoffset
, len
);
900 int bufsize
= back
->send(backhandle
, data
, len
);
903 * If the network transfer is backing up - that is, the
904 * remote site is not accepting data as fast as we can
905 * produce it - then we must loop on network events until
906 * we have space in the buffer again.
908 while (bufsize
> MAX_SCP_BUFSIZE
) {
909 if (ssh_sftp_loop_iteration() < 0)
911 bufsize
= back
->sendbuffer(backhandle
);
918 int scp_send_finish(void)
921 struct fxp_attrs attrs
;
922 struct sftp_packet
*pktin
;
923 struct sftp_request
*req
, *rreq
;
926 while (!xfer_done(scp_sftp_xfer
)) {
928 xfer_upload_gotpkt(scp_sftp_xfer
, pktin
);
930 xfer_cleanup(scp_sftp_xfer
);
932 if (!scp_sftp_filehandle
) {
936 attrs
.flags
= SSH_FILEXFER_ATTR_ACMODTIME
;
937 attrs
.atime
= scp_sftp_atime
;
938 attrs
.mtime
= scp_sftp_mtime
;
939 sftp_register(req
= fxp_fsetstat_send(scp_sftp_filehandle
, attrs
));
940 rreq
= sftp_find_request(pktin
= sftp_recv());
942 ret
= fxp_fsetstat_recv(pktin
, rreq
);
944 tell_user(stderr
, "unable to set file times: %s\n", fxp_error());
948 sftp_register(req
= fxp_close_send(scp_sftp_filehandle
));
949 rreq
= sftp_find_request(pktin
= sftp_recv());
951 fxp_close_recv(pktin
, rreq
);
955 back
->send(backhandle
, "", 1);
960 char *scp_save_remotepath(void)
963 return scp_sftp_remotepath
;
968 void scp_restore_remotepath(char *data
)
971 scp_sftp_remotepath
= data
;
974 int scp_send_dirname(char *name
, int modes
)
979 struct fxp_attrs attrs
;
980 struct sftp_packet
*pktin
;
981 struct sftp_request
*req
, *rreq
;
984 if (scp_sftp_targetisdir
) {
985 fullname
= dupcat(scp_sftp_remotepath
, "/", name
, NULL
);
987 fullname
= dupstr(scp_sftp_remotepath
);
991 * We don't worry about whether we managed to create the
992 * directory, because if it exists already it's OK just to
993 * use it. Instead, we will stat it afterwards, and if it
994 * exists and is a directory we will assume we were either
995 * successful or it didn't matter.
997 sftp_register(req
= fxp_mkdir_send(fullname
));
998 rreq
= sftp_find_request(pktin
= sftp_recv());
1000 ret
= fxp_mkdir_recv(pktin
, rreq
);
1005 err
= "server reported no error";
1007 sftp_register(req
= fxp_stat_send(fullname
));
1008 rreq
= sftp_find_request(pktin
= sftp_recv());
1009 assert(rreq
== req
);
1010 ret
= fxp_stat_recv(pktin
, rreq
, &attrs
);
1012 if (!ret
|| !(attrs
.flags
& SSH_FILEXFER_ATTR_PERMISSIONS
) ||
1013 !(attrs
.permissions
& 0040000)) {
1014 tell_user(stderr
, "unable to create directory %s: %s",
1020 scp_sftp_remotepath
= fullname
;
1025 sprintf(buf
, "D%04o 0 ", modes
);
1026 back
->send(backhandle
, buf
, strlen(buf
));
1027 back
->send(backhandle
, name
, strlen(name
));
1028 back
->send(backhandle
, "\n", 1);
1033 int scp_send_enddir(void)
1036 sfree(scp_sftp_remotepath
);
1039 back
->send(backhandle
, "E\n", 2);
1045 * Yes, I know; I have an scp_sink_setup _and_ an scp_sink_init.
1046 * That's bad. The difference is that scp_sink_setup is called once
1047 * right at the start, whereas scp_sink_init is called to
1048 * initialise every level of recursion in the protocol.
1050 int scp_sink_setup(char *source
, int preserve
, int recursive
)
1056 tell_user(stderr
, "unable to initialise SFTP: %s", fxp_error());
1061 * It's possible that the source string we've been given
1062 * contains a wildcard. If so, we must split the directory
1063 * away from the wildcard itself (throwing an error if any
1064 * wildcardness comes before the final slash) and arrange
1065 * things so that a dirstack entry will be set up.
1067 newsource
= snewn(1+strlen(source
), char);
1068 if (!wc_unescape(newsource
, source
)) {
1069 /* Yes, here we go; it's a wildcard. Bah. */
1070 char *dupsource
, *lastpart
, *dirpart
, *wildcard
;
1071 dupsource
= dupstr(source
);
1072 lastpart
= stripslashes(dupsource
, 0);
1073 wildcard
= dupstr(lastpart
);
1075 if (*dupsource
&& dupsource
[1]) {
1077 * The remains of dupsource are at least two
1078 * characters long, meaning the pathname wasn't
1079 * empty or just `/'. Hence, we remove the trailing
1082 lastpart
[-1] = '\0';
1083 } else if (!*dupsource
) {
1085 * The remains of dupsource are _empty_ - the whole
1086 * pathname was a wildcard. Hence we need to
1087 * replace it with ".".
1090 dupsource
= dupstr(".");
1094 * Now we have separated our string into dupsource (the
1095 * directory part) and wildcard. Both of these will
1096 * need freeing at some point. Next step is to remove
1097 * wildcard escapes from the directory part, throwing
1098 * an error if it contains a real wildcard.
1100 dirpart
= snewn(1+strlen(dupsource
), char);
1101 if (!wc_unescape(dirpart
, dupsource
)) {
1102 tell_user(stderr
, "%s: multiple-level wildcards unsupported",
1112 * Now we have dirpart (unescaped, ie a valid remote
1113 * path), and wildcard (a wildcard). This will be
1114 * sufficient to arrange a dirstack entry.
1116 scp_sftp_remotepath
= dirpart
;
1117 scp_sftp_wildcard
= wildcard
;
1120 scp_sftp_remotepath
= newsource
;
1121 scp_sftp_wildcard
= NULL
;
1123 scp_sftp_preserve
= preserve
;
1124 scp_sftp_recursive
= recursive
;
1125 scp_sftp_donethistarget
= 0;
1126 scp_sftp_dirstack_head
= NULL
;
1131 int scp_sink_init(void)
1134 back
->send(backhandle
, "", 1);
1139 #define SCP_SINK_FILE 1
1140 #define SCP_SINK_DIR 2
1141 #define SCP_SINK_ENDDIR 3
1142 #define SCP_SINK_RETRY 4 /* not an action; just try again */
1143 struct scp_sink_action
{
1144 int action
; /* FILE, DIR, ENDDIR */
1145 char *buf
; /* will need freeing after use */
1146 char *name
; /* filename or dirname (not ENDDIR) */
1147 int mode
; /* access mode (not ENDDIR) */
1148 uint64 size
; /* file size (not ENDDIR) */
1149 int settime
; /* 1 if atime and mtime are filled */
1150 unsigned long atime
, mtime
; /* access times for the file */
1153 int scp_get_sink_action(struct scp_sink_action
*act
)
1157 int must_free_fname
;
1158 struct fxp_attrs attrs
;
1159 struct sftp_packet
*pktin
;
1160 struct sftp_request
*req
, *rreq
;
1163 if (!scp_sftp_dirstack_head
) {
1164 if (!scp_sftp_donethistarget
) {
1166 * Simple case: we are only dealing with one file.
1168 fname
= scp_sftp_remotepath
;
1169 must_free_fname
= 0;
1170 scp_sftp_donethistarget
= 1;
1173 * Even simpler case: one file _which we've done_.
1174 * Return 1 (finished).
1180 * We're now in the middle of stepping through a list
1181 * of names returned from fxp_readdir(); so let's carry
1184 struct scp_sftp_dirstack
*head
= scp_sftp_dirstack_head
;
1185 while (head
->namepos
< head
->namelen
&&
1186 (is_dots(head
->names
[head
->namepos
].filename
) ||
1188 !wc_match(head
->wildcard
,
1189 head
->names
[head
->namepos
].filename
))))
1190 head
->namepos
++; /* skip . and .. */
1191 if (head
->namepos
< head
->namelen
) {
1192 head
->matched_something
= 1;
1193 fname
= dupcat(head
->dirpath
, "/",
1194 head
->names
[head
->namepos
++].filename
,
1196 must_free_fname
= 1;
1199 * We've come to the end of the list; pop it off
1200 * the stack and return an ENDDIR action (or RETRY
1201 * if this was a wildcard match).
1203 if (head
->wildcard
) {
1204 act
->action
= SCP_SINK_RETRY
;
1205 if (!head
->matched_something
) {
1206 tell_user(stderr
, "pscp: wildcard '%s' matched "
1207 "no files", head
->wildcard
);
1210 sfree(head
->wildcard
);
1213 act
->action
= SCP_SINK_ENDDIR
;
1216 sfree(head
->dirpath
);
1218 scp_sftp_dirstack_head
= head
->next
;
1226 * Now we have a filename. Stat it, and see if it's a file
1229 sftp_register(req
= fxp_stat_send(fname
));
1230 rreq
= sftp_find_request(pktin
= sftp_recv());
1231 assert(rreq
== req
);
1232 ret
= fxp_stat_recv(pktin
, rreq
, &attrs
);
1234 if (!ret
|| !(attrs
.flags
& SSH_FILEXFER_ATTR_PERMISSIONS
)) {
1235 tell_user(stderr
, "unable to identify %s: %s", fname
,
1236 ret ?
"file type not supplied" : fxp_error());
1241 if (attrs
.permissions
& 0040000) {
1242 struct scp_sftp_dirstack
*newitem
;
1243 struct fxp_handle
*dirhandle
;
1244 int nnames
, namesize
;
1245 struct fxp_name
*ournames
;
1246 struct fxp_names
*names
;
1249 * It's a directory. If we're not in recursive mode,
1250 * this merits a complaint (which is fatal if the name
1251 * was specified directly, but not if it was matched by
1254 * We skip this complaint completely if
1255 * scp_sftp_wildcard is set, because that's an
1256 * indication that we're not actually supposed to
1257 * _recursively_ transfer the dir, just scan it for
1258 * things matching the wildcard.
1260 if (!scp_sftp_recursive
&& !scp_sftp_wildcard
) {
1261 tell_user(stderr
, "pscp: %s: is a directory", fname
);
1263 if (must_free_fname
) sfree(fname
);
1264 if (scp_sftp_dirstack_head
) {
1265 act
->action
= SCP_SINK_RETRY
;
1273 * Otherwise, the fun begins. We must fxp_opendir() the
1274 * directory, slurp the filenames into memory, return
1275 * SCP_SINK_DIR (unless this is a wildcard match), and
1276 * set targetisdir. The next time we're called, we will
1277 * run through the list of filenames one by one,
1278 * matching them against a wildcard if present.
1280 * If targetisdir is _already_ set (meaning we're
1281 * already in the middle of going through another such
1282 * list), we must push the other (target,namelist) pair
1285 sftp_register(req
= fxp_opendir_send(fname
));
1286 rreq
= sftp_find_request(pktin
= sftp_recv());
1287 assert(rreq
== req
);
1288 dirhandle
= fxp_opendir_recv(pktin
, rreq
);
1291 tell_user(stderr
, "scp: unable to open directory %s: %s",
1292 fname
, fxp_error());
1293 if (must_free_fname
) sfree(fname
);
1297 nnames
= namesize
= 0;
1302 sftp_register(req
= fxp_readdir_send(dirhandle
));
1303 rreq
= sftp_find_request(pktin
= sftp_recv());
1304 assert(rreq
== req
);
1305 names
= fxp_readdir_recv(pktin
, rreq
);
1307 if (names
== NULL
) {
1308 if (fxp_error_type() == SSH_FX_EOF
)
1310 tell_user(stderr
, "scp: reading directory %s: %s\n",
1311 fname
, fxp_error());
1312 if (must_free_fname
) sfree(fname
);
1317 if (names
->nnames
== 0) {
1318 fxp_free_names(names
);
1321 if (nnames
+ names
->nnames
>= namesize
) {
1322 namesize
+= names
->nnames
+ 128;
1323 ournames
= sresize(ournames
, namesize
, struct fxp_name
);
1325 for (i
= 0; i
< names
->nnames
; i
++) {
1326 if (!strcmp(names
->names
[i
].filename
, ".") ||
1327 !strcmp(names
->names
[i
].filename
, "..")) {
1329 * . and .. are normal consequences of
1330 * reading a directory, and aren't worth
1331 * complaining about.
1333 } else if (!vet_filename(names
->names
[i
].filename
)) {
1334 tell_user(stderr
, "ignoring potentially dangerous server-"
1335 "supplied filename '%s'\n",
1336 names
->names
[i
].filename
);
1338 ournames
[nnames
++] = names
->names
[i
];
1340 names
->nnames
= 0; /* prevent free_names */
1341 fxp_free_names(names
);
1343 sftp_register(req
= fxp_close_send(dirhandle
));
1344 rreq
= sftp_find_request(pktin
= sftp_recv());
1345 assert(rreq
== req
);
1346 fxp_close_recv(pktin
, rreq
);
1348 newitem
= snew(struct scp_sftp_dirstack
);
1349 newitem
->next
= scp_sftp_dirstack_head
;
1350 newitem
->names
= ournames
;
1351 newitem
->namepos
= 0;
1352 newitem
->namelen
= nnames
;
1353 if (must_free_fname
)
1354 newitem
->dirpath
= fname
;
1356 newitem
->dirpath
= dupstr(fname
);
1357 if (scp_sftp_wildcard
) {
1358 newitem
->wildcard
= scp_sftp_wildcard
;
1359 newitem
->matched_something
= 0;
1360 scp_sftp_wildcard
= NULL
;
1362 newitem
->wildcard
= NULL
;
1364 scp_sftp_dirstack_head
= newitem
;
1366 if (newitem
->wildcard
) {
1367 act
->action
= SCP_SINK_RETRY
;
1369 act
->action
= SCP_SINK_DIR
;
1370 act
->buf
= dupstr(stripslashes(fname
, 0));
1371 act
->name
= act
->buf
;
1372 act
->size
= uint64_make(0,0); /* duhh, it's a directory */
1373 act
->mode
= 07777 & attrs
.permissions
;
1374 if (scp_sftp_preserve
&&
1375 (attrs
.flags
& SSH_FILEXFER_ATTR_ACMODTIME
)) {
1376 act
->atime
= attrs
.atime
;
1377 act
->mtime
= attrs
.mtime
;
1386 * It's a file. Return SCP_SINK_FILE.
1388 act
->action
= SCP_SINK_FILE
;
1389 act
->buf
= dupstr(stripslashes(fname
, 0));
1390 act
->name
= act
->buf
;
1391 if (attrs
.flags
& SSH_FILEXFER_ATTR_SIZE
) {
1392 act
->size
= attrs
.size
;
1394 act
->size
= uint64_make(ULONG_MAX
,ULONG_MAX
); /* no idea */
1395 act
->mode
= 07777 & attrs
.permissions
;
1396 if (scp_sftp_preserve
&&
1397 (attrs
.flags
& SSH_FILEXFER_ATTR_ACMODTIME
)) {
1398 act
->atime
= attrs
.atime
;
1399 act
->mtime
= attrs
.mtime
;
1403 if (must_free_fname
)
1404 scp_sftp_currentname
= fname
;
1406 scp_sftp_currentname
= dupstr(fname
);
1421 if (ssh_scp_recv((unsigned char *) &ch
, 1) <= 0)
1424 bump("Protocol error: Unexpected newline");
1428 if (ssh_scp_recv((unsigned char *) &ch
, 1) <= 0)
1429 bump("Lost connection");
1432 act
->buf
= sresize(act
->buf
, bufsize
, char);
1435 } while (ch
!= '\n');
1436 act
->buf
[i
- 1] = '\0';
1438 case '\01': /* error */
1439 tell_user(stderr
, "%s\n", act
->buf
);
1441 continue; /* go round again */
1442 case '\02': /* fatal error */
1443 bump("%s", act
->buf
);
1445 back
->send(backhandle
, "", 1);
1446 act
->action
= SCP_SINK_ENDDIR
;
1449 if (sscanf(act
->buf
, "%ld %*d %ld %*d",
1450 &act
->mtime
, &act
->atime
) == 2) {
1452 back
->send(backhandle
, "", 1);
1453 continue; /* go round again */
1455 bump("Protocol error: Illegal time format");
1458 act
->action
= (action
== 'C' ? SCP_SINK_FILE
: SCP_SINK_DIR
);
1461 bump("Protocol error: Expected control record");
1464 * We will go round this loop only once, unless we hit
1471 * If we get here, we must have seen SCP_SINK_FILE or
1477 if (sscanf(act
->buf
, "%o %s %n", &act
->mode
, sizestr
, &i
) != 2)
1478 bump("Protocol error: Illegal file descriptor format");
1479 act
->size
= uint64_from_decimal(sizestr
);
1480 act
->name
= act
->buf
+ i
;
1486 int scp_accept_filexfer(void)
1489 struct sftp_packet
*pktin
;
1490 struct sftp_request
*req
, *rreq
;
1492 sftp_register(req
= fxp_open_send(scp_sftp_currentname
, SSH_FXF_READ
));
1493 rreq
= sftp_find_request(pktin
= sftp_recv());
1494 assert(rreq
== req
);
1495 scp_sftp_filehandle
= fxp_open_recv(pktin
, rreq
);
1497 if (!scp_sftp_filehandle
) {
1498 tell_user(stderr
, "pscp: unable to open %s: %s",
1499 scp_sftp_currentname
, fxp_error());
1503 scp_sftp_fileoffset
= uint64_make(0, 0);
1504 scp_sftp_xfer
= xfer_download_init(scp_sftp_filehandle
,
1505 scp_sftp_fileoffset
);
1506 sfree(scp_sftp_currentname
);
1509 back
->send(backhandle
, "", 1);
1510 return 0; /* can't fail */
1514 int scp_recv_filedata(char *data
, int len
)
1517 struct sftp_packet
*pktin
;
1521 xfer_download_queue(scp_sftp_xfer
);
1522 pktin
= sftp_recv();
1523 ret
= xfer_download_gotpkt(scp_sftp_xfer
, pktin
);
1526 tell_user(stderr
, "pscp: error while reading: %s", fxp_error());
1531 if (xfer_download_data(scp_sftp_xfer
, &vbuf
, &actuallen
)) {
1533 * This assertion relies on the fact that the natural
1534 * block size used in the xfer manager is at most that
1535 * used in this module. I don't like crossing layers in
1536 * this way, but it'll do for now.
1538 assert(actuallen
<= len
);
1539 memcpy(data
, vbuf
, actuallen
);
1544 scp_sftp_fileoffset
= uint64_add32(scp_sftp_fileoffset
, actuallen
);
1548 return ssh_scp_recv((unsigned char *) data
, len
);
1552 int scp_finish_filerecv(void)
1555 struct sftp_packet
*pktin
;
1556 struct sftp_request
*req
, *rreq
;
1559 * Ensure that xfer_done() will work correctly, so we can
1560 * clean up any outstanding requests from the file
1563 xfer_set_error(scp_sftp_xfer
);
1564 while (!xfer_done(scp_sftp_xfer
)) {
1568 pktin
= sftp_recv();
1569 xfer_download_gotpkt(scp_sftp_xfer
, pktin
);
1570 if (xfer_download_data(scp_sftp_xfer
, &vbuf
, &len
))
1573 xfer_cleanup(scp_sftp_xfer
);
1575 sftp_register(req
= fxp_close_send(scp_sftp_filehandle
));
1576 rreq
= sftp_find_request(pktin
= sftp_recv());
1577 assert(rreq
== req
);
1578 fxp_close_recv(pktin
, rreq
);
1581 back
->send(backhandle
, "", 1);
1586 /* ----------------------------------------------------------------------
1587 * Send an error message to the other side and to the screen.
1588 * Increment error counter.
1590 static void run_err(const char *fmt
, ...)
1596 str
= dupvprintf(fmt
, ap
);
1597 str2
= dupcat("scp: ", str
, "\n", NULL
);
1599 scp_send_errmsg(str2
);
1600 tell_user(stderr
, "%s", str2
);
1606 * Execute the source part of the SCP protocol.
1608 static void source(char *src
)
1611 unsigned long mtime
, atime
;
1617 time_t stat_starttime
, stat_lasttime
;
1619 attr
= file_type(src
);
1620 if (attr
== FILE_TYPE_NONEXISTENT
||
1621 attr
== FILE_TYPE_WEIRD
) {
1622 run_err("%s: %s file or directory", src
,
1623 (attr
== FILE_TYPE_WEIRD ?
"Not a" : "No such"));
1627 if (attr
== FILE_TYPE_DIRECTORY
) {
1630 * Avoid . and .. directories.
1633 p
= strrchr(src
, '/');
1635 p
= strrchr(src
, '\\');
1640 if (!strcmp(p
, ".") || !strcmp(p
, ".."))
1641 /* skip . and .. */ ;
1645 run_err("%s: not a regular file", src
);
1650 if ((last
= strrchr(src
, '/')) == NULL
)
1654 if (strrchr(last
, '\\') != NULL
)
1655 last
= strrchr(last
, '\\') + 1;
1656 if (last
== src
&& strchr(src
, ':') != NULL
)
1657 last
= strchr(src
, ':') + 1;
1659 f
= open_existing_file(src
, &size
, &mtime
, &atime
);
1661 run_err("%s: Cannot open file", src
);
1665 if (scp_send_filetimes(mtime
, atime
))
1671 uint64_decimal(size
, sizestr
);
1672 tell_user(stderr
, "Sending file %s, size=%s", last
, sizestr
);
1674 if (scp_send_filename(last
, size
, 0644))
1677 stat_bytes
= uint64_make(0,0);
1678 stat_starttime
= time(NULL
);
1681 for (i
= uint64_make(0,0);
1682 uint64_compare(i
,size
) < 0;
1683 i
= uint64_add32(i
,4096)) {
1684 char transbuf
[4096];
1687 if (uint64_compare(uint64_add32(i
, k
),size
) > 0) /* i + k > size */
1688 k
= (uint64_subtract(size
, i
)).lo
; /* k = size - i; */
1689 if ((j
= read_from_file(f
, transbuf
, k
)) != k
) {
1692 bump("%s: Read error", src
);
1694 if (scp_send_filedata(transbuf
, k
))
1695 bump("%s: Network error occurred", src
);
1698 stat_bytes
= uint64_add32(stat_bytes
, k
);
1699 if (time(NULL
) != stat_lasttime
||
1700 (uint64_compare(uint64_add32(i
, k
), size
) == 0)) {
1701 stat_lasttime
= time(NULL
);
1702 print_stats(last
, size
, stat_bytes
,
1703 stat_starttime
, stat_lasttime
);
1710 (void) scp_send_finish();
1714 * Recursively send the contents of a directory.
1716 static void rsource(char *src
)
1722 if ((last
= strrchr(src
, '/')) == NULL
)
1726 if (strrchr(last
, '\\') != NULL
)
1727 last
= strrchr(last
, '\\') + 1;
1728 if (last
== src
&& strchr(src
, ':') != NULL
)
1729 last
= strchr(src
, ':') + 1;
1731 /* maybe send filetime */
1733 save_target
= scp_save_remotepath();
1736 tell_user(stderr
, "Entering directory: %s", last
);
1737 if (scp_send_dirname(last
, 0755))
1740 dir
= open_directory(src
);
1743 while ((filename
= read_filename(dir
)) != NULL
) {
1744 char *foundfile
= dupcat(src
, "/", filename
, NULL
);
1750 close_directory(dir
);
1752 (void) scp_send_enddir();
1754 scp_restore_remotepath(save_target
);
1758 * Execute the sink part of the SCP protocol.
1760 static void sink(char *targ
, char *src
)
1770 time_t stat_starttime
, stat_lasttime
;
1773 attr
= file_type(targ
);
1774 if (attr
== FILE_TYPE_DIRECTORY
)
1777 if (targetshouldbedirectory
&& !targisdir
)
1778 bump("%s: Not a directory", targ
);
1782 struct scp_sink_action act
;
1783 if (scp_get_sink_action(&act
))
1786 if (act
.action
== SCP_SINK_ENDDIR
)
1789 if (act
.action
== SCP_SINK_RETRY
)
1794 * Prevent the remote side from maliciously writing to
1795 * files outside the target area by sending a filename
1796 * containing `../'. In fact, it shouldn't be sending
1797 * filenames with any slashes or colons in at all; so
1798 * we'll find the last slash, backslash or colon in the
1799 * filename and use only the part after that. (And
1802 * In addition, we also ensure here that if we're
1803 * copying a single file and the target is a directory
1804 * (common usage: `pscp host:filename .') the remote
1805 * can't send us a _different_ file name. We can
1806 * distinguish this case because `src' will be non-NULL
1807 * and the last component of that will fail to match
1808 * (the last component of) the name sent.
1810 * Well, not always; if `src' is a wildcard, we do
1811 * expect to get back filenames that don't correspond
1812 * exactly to it. Ideally in this case, we would like
1813 * to ensure that the returned filename actually
1814 * matches the wildcard pattern - but one of SCP's
1815 * protocol infelicities is that wildcard matching is
1816 * done at the server end _by the server's rules_ and
1817 * so in general this is infeasible. Hence, we only
1818 * accept filenames that don't correspond to `src' if
1819 * unsafe mode is enabled or we are using SFTP (which
1820 * resolves remote wildcards on the client side and can
1823 char *striptarget
, *stripsrc
;
1825 striptarget
= stripslashes(act
.name
, 1);
1826 if (striptarget
!= act
.name
) {
1827 tell_user(stderr
, "warning: remote host sent a compound"
1828 " pathname '%s'", act
.name
);
1829 tell_user(stderr
, " renaming local file to '%s'",
1834 * Also check to see if the target filename is '.' or
1835 * '..', or indeed '...' and so on because Windows
1836 * appears to interpret those like '..'.
1838 if (is_dots(striptarget
)) {
1839 bump("security violation: remote host attempted to write to"
1840 " a '.' or '..' path!");
1844 stripsrc
= stripslashes(src
, 1);
1845 if (strcmp(striptarget
, stripsrc
) &&
1846 !using_sftp
&& !scp_unsafe_mode
) {
1847 tell_user(stderr
, "warning: remote host tried to write "
1848 "to a file called '%s'", striptarget
);
1849 tell_user(stderr
, " when we requested a file "
1850 "called '%s'.", stripsrc
);
1851 tell_user(stderr
, " If this is a wildcard, "
1852 "consider upgrading to SSH-2 or using");
1853 tell_user(stderr
, " the '-unsafe' option. Renaming"
1854 " of this file has been disallowed.");
1855 /* Override the name the server provided with our own. */
1856 striptarget
= stripsrc
;
1860 if (targ
[0] != '\0')
1861 destfname
= dir_file_cat(targ
, striptarget
);
1863 destfname
= dupstr(striptarget
);
1866 * In this branch of the if, the target area is a
1867 * single file with an explicitly specified name in any
1868 * case, so there's no danger.
1870 destfname
= dupstr(targ
);
1872 attr
= file_type(destfname
);
1873 exists
= (attr
!= FILE_TYPE_NONEXISTENT
);
1875 if (act
.action
== SCP_SINK_DIR
) {
1876 if (exists
&& attr
!= FILE_TYPE_DIRECTORY
) {
1877 run_err("%s: Not a directory", destfname
);
1881 if (!create_directory(destfname
)) {
1882 run_err("%s: Cannot create directory", destfname
);
1886 sink(destfname
, NULL
);
1887 /* can we set the timestamp for directories ? */
1891 f
= open_new_file(destfname
);
1893 run_err("%s: Cannot create file", destfname
);
1897 if (scp_accept_filexfer())
1900 stat_bytes
= uint64_make(0, 0);
1901 stat_starttime
= time(NULL
);
1903 stat_name
= stripslashes(destfname
, 1);
1905 received
= uint64_make(0, 0);
1906 while (uint64_compare(received
,act
.size
) < 0) {
1907 char transbuf
[32768];
1910 blksize
= uint64_make(0, 32768);
1911 if (uint64_compare(blksize
,uint64_subtract(act
.size
,received
)) > 0)
1912 blksize
= uint64_subtract(act
.size
,received
);
1913 read
= scp_recv_filedata(transbuf
, (int)blksize
.lo
);
1915 bump("Lost connection");
1918 if (write_to_file(f
, transbuf
, read
) != (int)read
) {
1920 /* FIXME: in sftp we can actually abort the transfer */
1922 printf("\r%-25.25s | %50s\n",
1924 "Write error.. waiting for end of file");
1928 stat_bytes
= uint64_add32(stat_bytes
,read
);
1929 if (time(NULL
) > stat_lasttime
||
1930 uint64_compare(uint64_add32(received
, read
), act
.size
) == 0) {
1931 stat_lasttime
= time(NULL
);
1932 print_stats(stat_name
, act
.size
, stat_bytes
,
1933 stat_starttime
, stat_lasttime
);
1936 received
= uint64_add32(received
, read
);
1939 set_file_times(f
, act
.mtime
, act
.atime
);
1944 run_err("%s: Write error", destfname
);
1947 (void) scp_finish_filerecv();
1954 * We will copy local files to a remote server.
1956 static void toremote(int argc
, char *argv
[])
1958 char *src
, *targ
, *host
, *user
;
1962 targ
= argv
[argc
- 1];
1964 /* Separate host from filename */
1968 bump("targ == NULL in toremote()");
1972 /* Substitute "." for empty target */
1974 /* Separate host and username */
1976 host
= strrchr(host
, '@');
1987 if (colon(argv
[0]) != NULL
)
1988 bump("%s: Remote to remote not supported", argv
[0]);
1990 wc_type
= test_wildcard(argv
[0], 1);
1991 if (wc_type
== WCTYPE_NONEXISTENT
)
1992 bump("%s: No such file or directory\n", argv
[0]);
1993 else if (wc_type
== WCTYPE_WILDCARD
)
1994 targetshouldbedirectory
= 1;
1997 cmd
= dupprintf("scp%s%s%s%s -t %s",
1998 verbose ?
" -v" : "",
1999 recursive ?
" -r" : "",
2000 preserve ?
" -p" : "",
2001 targetshouldbedirectory ?
" -d" : "", targ
);
2002 do_cmd(host
, user
, cmd
);
2005 if (scp_source_setup(targ
, targetshouldbedirectory
))
2008 for (i
= 0; i
< argc
- 1; i
++) {
2010 if (colon(src
) != NULL
) {
2011 tell_user(stderr
, "%s: Remote to remote not supported\n", src
);
2016 wc_type
= test_wildcard(src
, 1);
2017 if (wc_type
== WCTYPE_NONEXISTENT
) {
2018 run_err("%s: No such file or directory", src
);
2020 } else if (wc_type
== WCTYPE_FILENAME
) {
2024 WildcardMatcher
*wc
;
2027 wc
= begin_wildcard_matching(src
);
2029 run_err("%s: No such file or directory", src
);
2033 while ((filename
= wildcard_get_filename(wc
)) != NULL
) {
2038 finish_wildcard_matching(wc
);
2044 * We will copy files from a remote server to the local machine.
2046 static void tolocal(int argc
, char *argv
[])
2048 char *src
, *targ
, *host
, *user
;
2052 bump("More than one remote source not supported");
2057 /* Separate host from filename */
2061 bump("Local to local copy not supported");
2065 /* Substitute "." for empty filename */
2067 /* Separate username and hostname */
2069 host
= strrchr(host
, '@');
2079 cmd
= dupprintf("scp%s%s%s%s -f %s",
2080 verbose ?
" -v" : "",
2081 recursive ?
" -r" : "",
2082 preserve ?
" -p" : "",
2083 targetshouldbedirectory ?
" -d" : "", src
);
2084 do_cmd(host
, user
, cmd
);
2087 if (scp_sink_setup(src
, preserve
, recursive
))
2094 * We will issue a list command to get a remote directory.
2096 static void get_dir_list(int argc
, char *argv
[])
2098 char *src
, *host
, *user
;
2104 /* Separate host from filename */
2108 bump("Local file listing not supported");
2112 /* Substitute "." for empty filename */
2114 /* Separate username and hostname */
2116 host
= strrchr(host
, '@');
2126 cmd
= snewn(4 * strlen(src
) + 100, char);
2127 strcpy(cmd
, "ls -la '");
2128 p
= cmd
+ strlen(cmd
);
2129 for (q
= src
; *q
; q
++) {
2142 do_cmd(host
, user
, cmd
);
2146 scp_sftp_listdir(src
);
2148 while (ssh_scp_recv((unsigned char *) &c
, 1) > 0)
2149 tell_char(stdout
, c
);
2154 * Short description of parameters.
2156 static void usage(void)
2158 printf("PuTTY Secure Copy client\n");
2159 printf("%s\n", ver
);
2160 printf("Usage: pscp [options] [user@]host:source target\n");
2162 (" pscp [options] source [source...] [user@]host:target\n");
2163 printf(" pscp [options] -ls [user@]host:filespec\n");
2164 printf("Options:\n");
2165 printf(" -V print version information and exit\n");
2166 printf(" -pgpfp print PGP key fingerprints and exit\n");
2167 printf(" -p preserve file attributes\n");
2168 printf(" -q quiet, don't show statistics\n");
2169 printf(" -r copy directories recursively\n");
2170 printf(" -v show verbose messages\n");
2171 printf(" -load sessname Load settings from saved session\n");
2172 printf(" -P port connect to specified port\n");
2173 printf(" -l user connect with specified username\n");
2174 printf(" -pw passw login with specified password\n");
2175 printf(" -1 -2 force use of particular SSH protocol version\n");
2176 printf(" -4 -6 force use of IPv4 or IPv6\n");
2177 printf(" -C enable compression\n");
2178 printf(" -i key private key file for authentication\n");
2179 printf(" -noagent disable use of Pageant\n");
2180 printf(" -agent enable use of Pageant\n");
2181 printf(" -batch disable all interactive prompts\n");
2182 printf(" -unsafe allow server-side wildcards (DANGEROUS)\n");
2183 printf(" -sftp force use of SFTP protocol\n");
2184 printf(" -scp force use of SCP protocol\n");
2187 * -gui is an internal option, used by GUI front ends to get
2188 * pscp to pass progress reports back to them. It's not an
2189 * ordinary user-accessible option, so it shouldn't be part of
2190 * the command-line help. The only people who need to know
2191 * about it are programmers, and they can read the source.
2194 (" -gui hWnd GUI mode with the windows handle for receiving messages\n");
2201 printf("pscp: %s\n", ver
);
2205 void cmdline_error(char *p
, ...)
2208 fprintf(stderr
, "pscp: ");
2210 vfprintf(stderr
, p
, ap
);
2212 fprintf(stderr
, "\n try typing just \"pscp\" for help\n");
2217 * Main program. (Called `psftp_main' because it gets called from
2218 * *sftp.c; bit silly, I know, but it had to be called _something_.)
2220 int psftp_main(int argc
, char *argv
[])
2224 default_protocol
= PROT_TELNET
;
2227 #ifdef FLAG_SYNCAGENT
2231 cmdline_tooltype
= TOOLTYPE_FILETRANSFER
;
2234 /* Load Default Settings before doing anything else. */
2236 do_defaults(NULL
, conf
);
2237 loaded_session
= FALSE
;
2239 for (i
= 1; i
< argc
; i
++) {
2241 if (argv
[i
][0] != '-')
2243 ret
= cmdline_process_param(argv
[i
], i
+1<argc?argv
[i
+1]:NULL
, 1, conf
);
2245 cmdline_error("option \"%s\" requires an argument", argv
[i
]);
2246 } else if (ret
== 2) {
2247 i
++; /* skip next argument */
2248 } else if (ret
== 1) {
2249 /* We have our own verbosity in addition to `flags'. */
2250 if (flags
& FLAG_VERBOSE
)
2252 } else if (strcmp(argv
[i
], "-pgpfp") == 0) {
2255 } else if (strcmp(argv
[i
], "-r") == 0) {
2257 } else if (strcmp(argv
[i
], "-p") == 0) {
2259 } else if (strcmp(argv
[i
], "-q") == 0) {
2261 } else if (strcmp(argv
[i
], "-h") == 0 || strcmp(argv
[i
], "-?") == 0) {
2263 } else if (strcmp(argv
[i
], "-V") == 0) {
2265 } else if (strcmp(argv
[i
], "-ls") == 0) {
2267 } else if (strcmp(argv
[i
], "-batch") == 0) {
2268 console_batch_mode
= 1;
2269 } else if (strcmp(argv
[i
], "-unsafe") == 0) {
2270 scp_unsafe_mode
= 1;
2271 } else if (strcmp(argv
[i
], "-sftp") == 0) {
2272 try_scp
= 0; try_sftp
= 1;
2273 } else if (strcmp(argv
[i
], "-scp") == 0) {
2274 try_scp
= 1; try_sftp
= 0;
2275 } else if (strcmp(argv
[i
], "--") == 0) {
2279 cmdline_error("unknown option \"%s\"", argv
[i
]);
2289 get_dir_list(argc
, argv
);
2296 targetshouldbedirectory
= 1;
2298 if (colon(argv
[argc
- 1]) != NULL
)
2299 toremote(argc
, argv
);
2301 tolocal(argc
, argv
);
2304 if (back
!= NULL
&& back
->connected(backhandle
)) {
2306 back
->special(backhandle
, TS_EOF
);
2307 ssh_scp_recv((unsigned char *) &ch
, 1);
2312 console_provide_logctx(NULL
);
2313 back
->free(backhandle
);
2317 return (errs
== 0 ?
0 : 1);