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 */
338 do_defaults(host
, &cfg2
);
339 if (cfg2
.host
[0] != '\0') {
340 /* Settings present and include hostname */
341 /* Re-load data into the real config. */
342 do_defaults(host
, &cfg
);
344 /* Session doesn't exist or mention a hostname. */
345 /* Use `host' as a bare hostname. */
346 strncpy(cfg
.host
, host
, sizeof(cfg
.host
) - 1);
347 cfg
.host
[sizeof(cfg
.host
) - 1] = '\0';
350 /* Patch in hostname `host' to session details. */
351 strncpy(cfg
.host
, host
, sizeof(cfg
.host
) - 1);
352 cfg
.host
[sizeof(cfg
.host
) - 1] = '\0';
356 * Force use of SSH. (If they got the protocol wrong we assume the
357 * port is useless too.)
359 if (cfg
.protocol
!= PROT_SSH
) {
360 cfg
.protocol
= PROT_SSH
;
365 * Enact command-line overrides.
367 cmdline_run_saved(&cfg
);
370 * Trim leading whitespace off the hostname if it's there.
373 int space
= strspn(cfg
.host
, " \t");
374 memmove(cfg
.host
, cfg
.host
+space
, 1+strlen(cfg
.host
)-space
);
377 /* See if host is of the form user@host */
378 if (cfg
.host
[0] != '\0') {
379 char *atsign
= strrchr(cfg
.host
, '@');
380 /* Make sure we're not overflowing the user field */
382 if (atsign
- cfg
.host
< sizeof cfg
.username
) {
383 strncpy(cfg
.username
, cfg
.host
, atsign
- cfg
.host
);
384 cfg
.username
[atsign
- cfg
.host
] = '\0';
386 memmove(cfg
.host
, atsign
+ 1, 1 + strlen(atsign
+ 1));
391 * Remove any remaining whitespace from the hostname.
395 while (cfg
.host
[p2
] != '\0') {
396 if (cfg
.host
[p2
] != ' ' && cfg
.host
[p2
] != '\t') {
397 cfg
.host
[p1
] = cfg
.host
[p2
];
406 if (user
!= NULL
&& user
[0] != '\0') {
407 strncpy(cfg
.username
, user
, sizeof(cfg
.username
) - 1);
408 cfg
.username
[sizeof(cfg
.username
) - 1] = '\0';
409 } else if (cfg
.username
[0] == '\0') {
410 user
= get_username();
412 bump("Empty user name");
415 tell_user(stderr
, "Guessing user name: %s", user
);
416 strncpy(cfg
.username
, user
, sizeof(cfg
.username
) - 1);
417 cfg
.username
[sizeof(cfg
.username
) - 1] = '\0';
423 * Disable scary things which shouldn't be enabled for simple
424 * things like SCP and SFTP: agent forwarding, port forwarding,
429 cfg
.portfwd
[0] = cfg
.portfwd
[1] = '\0';
430 cfg
.ssh_simple
= TRUE
;
433 * Set up main and possibly fallback command depending on
434 * options specified by user.
435 * Attempt to start the SFTP subsystem as a first choice,
436 * falling back to the provided scp command if that fails.
438 cfg
.remote_cmd_ptr2
= NULL
;
440 /* First choice is SFTP subsystem. */
441 main_cmd_is_sftp
= 1;
442 strcpy(cfg
.remote_cmd
, "sftp");
443 cfg
.ssh_subsys
= TRUE
;
445 /* Fallback is to use the provided scp command. */
446 fallback_cmd_is_sftp
= 0;
447 cfg
.remote_cmd_ptr2
= cmd
;
448 cfg
.ssh_subsys2
= FALSE
;
450 /* Since we're not going to try SCP, we may as well try
451 * harder to find an SFTP server, since in the current
452 * implementation we have a spare slot. */
453 fallback_cmd_is_sftp
= 1;
454 /* see psftp.c for full explanation of this kludge */
455 cfg
.remote_cmd_ptr2
=
456 "test -x /usr/lib/sftp-server && exec /usr/lib/sftp-server\n"
457 "test -x /usr/local/lib/sftp-server && exec /usr/local/lib/sftp-server\n"
459 cfg
.ssh_subsys2
= FALSE
;
462 /* Don't try SFTP at all; just try the scp command. */
463 main_cmd_is_sftp
= 0;
464 cfg
.remote_cmd_ptr
= cmd
;
465 cfg
.ssh_subsys
= FALSE
;
471 err
= back
->init(NULL
, &backhandle
, &cfg
, cfg
.host
, cfg
.port
, &realhost
,
472 0, cfg
.tcp_keepalives
);
474 bump("ssh_init: %s", err
);
475 logctx
= log_init(NULL
, &cfg
);
476 back
->provide_logctx(backhandle
, logctx
);
477 console_provide_logctx(logctx
);
479 if (verbose
&& realhost
!= NULL
&& errs
== 0)
480 tell_user(stderr
, "Connected to %s\n", realhost
);
485 * Update statistic information about current file.
487 static void print_stats(char *name
, uint64 size
, uint64 done
,
488 time_t start
, time_t now
)
499 elap
= (unsigned long) difftime(now
, start
);
502 ratebs
= (float) (uint64_to_double(done
) / elap
);
504 ratebs
= (float) uint64_to_double(done
);
507 eta
= (unsigned long) (uint64_to_double(uint64_subtract(size
, done
)));
509 eta
= (unsigned long)
510 ((uint64_to_double(uint64_subtract(size
, done
)) / ratebs
));
513 etastr
= dupprintf("%02ld:%02ld:%02ld",
514 eta
/ 3600, (eta
% 3600) / 60, eta
% 60);
516 donedbl
= uint64_to_double(done
);
517 sizedbl
= uint64_to_double(size
);
518 pct
= (int) (100 * (donedbl
* 1.0 / sizedbl
));
522 /* divide by 1024 to provide kB */
523 uint64_decimal(uint64_shift_right(done
, 10), donekb
);
524 len
= printf("\r%-25.25s | %s kB | %5.1f kB/s | ETA: %8s | %3d%%",
526 donekb
, ratebs
/ 1024.0, etastr
, pct
);
527 if (len
< prev_stats_len
)
528 printf("%*s", prev_stats_len
- len
, "");
529 prev_stats_len
= len
;
531 if (uint64_compare(done
, size
) == 0)
541 * Find a colon in str and return a pointer to the colon.
542 * This is used to separate hostname from filename.
544 static char *colon(char *str
)
546 /* We ignore a leading colon, since the hostname cannot be
547 empty. We also ignore a colon as second character because
548 of filenames like f:myfile.txt. */
549 if (str
[0] == '\0' || str
[0] == ':' ||
550 (str
[0] != '[' && str
[1] == ':'))
552 while (*str
!= '\0' && *str
!= ':' && *str
!= '/' && *str
!= '\\') {
554 /* Skip over IPv6 literal addresses
555 * (eg: 'jeroen@[2001:db8::1]:myfile.txt') */
556 char *ipv6_end
= strchr(str
, ']');
570 * Return a pointer to the portion of str that comes after the last
571 * slash (or backslash or colon, if `local' is TRUE).
573 static char *stripslashes(char *str
, int local
)
578 p
= strchr(str
, ':');
582 p
= strrchr(str
, '/');
586 p
= strrchr(str
, '\\');
594 * Determine whether a string is entirely composed of dots.
596 static int is_dots(char *str
)
598 return str
[strspn(str
, ".")] == '\0';
602 * Wait for a response from the other side.
603 * Return 0 if ok, -1 if error.
605 static int response(void)
607 char ch
, resp
, rbuf
[2048];
610 if (ssh_scp_recv((unsigned char *) &resp
, 1) <= 0)
611 bump("Lost connection");
621 case 2: /* fatal error */
623 if (ssh_scp_recv((unsigned char *) &ch
, 1) <= 0)
624 bump("Protocol error: Lost connection");
626 } while (p
< sizeof(rbuf
) && ch
!= '\n');
629 tell_user(stderr
, "%s\n", rbuf
);
637 int sftp_recvdata(char *buf
, int len
)
639 return ssh_scp_recv((unsigned char *) buf
, len
);
641 int sftp_senddata(char *buf
, int len
)
643 back
->send(backhandle
, buf
, len
);
647 /* ----------------------------------------------------------------------
648 * sftp-based replacement for the hacky `pscp -ls'.
650 static int sftp_ls_compare(const void *av
, const void *bv
)
652 const struct fxp_name
*a
= (const struct fxp_name
*) av
;
653 const struct fxp_name
*b
= (const struct fxp_name
*) bv
;
654 return strcmp(a
->filename
, b
->filename
);
656 void scp_sftp_listdir(char *dirname
)
658 struct fxp_handle
*dirh
;
659 struct fxp_names
*names
;
660 struct fxp_name
*ournames
;
661 struct sftp_packet
*pktin
;
662 struct sftp_request
*req
, *rreq
;
663 int nnames
, namesize
;
667 tell_user(stderr
, "unable to initialise SFTP: %s", fxp_error());
672 printf("Listing directory %s\n", dirname
);
674 sftp_register(req
= fxp_opendir_send(dirname
));
675 rreq
= sftp_find_request(pktin
= sftp_recv());
677 dirh
= fxp_opendir_recv(pktin
, rreq
);
680 printf("Unable to open %s: %s\n", dirname
, fxp_error());
682 nnames
= namesize
= 0;
687 sftp_register(req
= fxp_readdir_send(dirh
));
688 rreq
= sftp_find_request(pktin
= sftp_recv());
690 names
= fxp_readdir_recv(pktin
, rreq
);
693 if (fxp_error_type() == SSH_FX_EOF
)
695 printf("Reading directory %s: %s\n", dirname
, fxp_error());
698 if (names
->nnames
== 0) {
699 fxp_free_names(names
);
703 if (nnames
+ names
->nnames
>= namesize
) {
704 namesize
+= names
->nnames
+ 128;
705 ournames
= sresize(ournames
, namesize
, struct fxp_name
);
708 for (i
= 0; i
< names
->nnames
; i
++)
709 ournames
[nnames
++] = names
->names
[i
];
710 names
->nnames
= 0; /* prevent free_names */
711 fxp_free_names(names
);
713 sftp_register(req
= fxp_close_send(dirh
));
714 rreq
= sftp_find_request(pktin
= sftp_recv());
716 fxp_close_recv(pktin
, rreq
);
719 * Now we have our filenames. Sort them by actual file
720 * name, and then output the longname parts.
722 qsort(ournames
, nnames
, sizeof(*ournames
), sftp_ls_compare
);
727 for (i
= 0; i
< nnames
; i
++)
728 printf("%s\n", ournames
[i
].longname
);
732 /* ----------------------------------------------------------------------
733 * Helper routines that contain the actual SCP protocol elements,
734 * implemented both as SCP1 and SFTP.
737 static struct scp_sftp_dirstack
{
738 struct scp_sftp_dirstack
*next
;
739 struct fxp_name
*names
;
740 int namepos
, namelen
;
743 int matched_something
; /* wildcard match set was non-empty */
744 } *scp_sftp_dirstack_head
;
745 static char *scp_sftp_remotepath
, *scp_sftp_currentname
;
746 static char *scp_sftp_wildcard
;
747 static int scp_sftp_targetisdir
, scp_sftp_donethistarget
;
748 static int scp_sftp_preserve
, scp_sftp_recursive
;
749 static unsigned long scp_sftp_mtime
, scp_sftp_atime
;
750 static int scp_has_times
;
751 static struct fxp_handle
*scp_sftp_filehandle
;
752 static struct fxp_xfer
*scp_sftp_xfer
;
753 static uint64 scp_sftp_fileoffset
;
755 int scp_source_setup(char *target
, int shouldbedir
)
759 * Find out whether the target filespec is in fact a
762 struct sftp_packet
*pktin
;
763 struct sftp_request
*req
, *rreq
;
764 struct fxp_attrs attrs
;
768 tell_user(stderr
, "unable to initialise SFTP: %s", fxp_error());
773 sftp_register(req
= fxp_stat_send(target
));
774 rreq
= sftp_find_request(pktin
= sftp_recv());
776 ret
= fxp_stat_recv(pktin
, rreq
, &attrs
);
778 if (!ret
|| !(attrs
.flags
& SSH_FILEXFER_ATTR_PERMISSIONS
))
779 scp_sftp_targetisdir
= 0;
781 scp_sftp_targetisdir
= (attrs
.permissions
& 0040000) != 0;
783 if (shouldbedir
&& !scp_sftp_targetisdir
) {
784 bump("pscp: remote filespec %s: not a directory\n", target
);
787 scp_sftp_remotepath
= dupstr(target
);
796 int scp_send_errmsg(char *str
)
799 /* do nothing; we never need to send our errors to the server */
801 back
->send(backhandle
, "\001", 1);/* scp protocol error prefix */
802 back
->send(backhandle
, str
, strlen(str
));
804 return 0; /* can't fail */
807 int scp_send_filetimes(unsigned long mtime
, unsigned long atime
)
810 scp_sftp_mtime
= mtime
;
811 scp_sftp_atime
= atime
;
816 sprintf(buf
, "T%lu 0 %lu 0\n", mtime
, atime
);
817 back
->send(backhandle
, buf
, strlen(buf
));
822 int scp_send_filename(char *name
, uint64 size
, int modes
)
826 struct sftp_packet
*pktin
;
827 struct sftp_request
*req
, *rreq
;
829 if (scp_sftp_targetisdir
) {
830 fullname
= dupcat(scp_sftp_remotepath
, "/", name
, NULL
);
832 fullname
= dupstr(scp_sftp_remotepath
);
835 sftp_register(req
= fxp_open_send(fullname
, SSH_FXF_WRITE
|
836 SSH_FXF_CREAT
| SSH_FXF_TRUNC
));
837 rreq
= sftp_find_request(pktin
= sftp_recv());
839 scp_sftp_filehandle
= fxp_open_recv(pktin
, rreq
);
841 if (!scp_sftp_filehandle
) {
842 tell_user(stderr
, "pscp: unable to open %s: %s",
843 fullname
, fxp_error());
847 scp_sftp_fileoffset
= uint64_make(0, 0);
848 scp_sftp_xfer
= xfer_upload_init(scp_sftp_filehandle
,
849 scp_sftp_fileoffset
);
855 uint64_decimal(size
, sizestr
);
856 sprintf(buf
, "C%04o %s ", modes
, sizestr
);
857 back
->send(backhandle
, buf
, strlen(buf
));
858 back
->send(backhandle
, name
, strlen(name
));
859 back
->send(backhandle
, "\n", 1);
864 int scp_send_filedata(char *data
, int len
)
868 struct sftp_packet
*pktin
;
870 if (!scp_sftp_filehandle
) {
874 while (!xfer_upload_ready(scp_sftp_xfer
)) {
876 ret
= xfer_upload_gotpkt(scp_sftp_xfer
, pktin
);
878 tell_user(stderr
, "error while writing: %s\n", fxp_error());
884 xfer_upload_data(scp_sftp_xfer
, data
, len
);
886 scp_sftp_fileoffset
= uint64_add32(scp_sftp_fileoffset
, len
);
889 int bufsize
= back
->send(backhandle
, data
, len
);
892 * If the network transfer is backing up - that is, the
893 * remote site is not accepting data as fast as we can
894 * produce it - then we must loop on network events until
895 * we have space in the buffer again.
897 while (bufsize
> MAX_SCP_BUFSIZE
) {
898 if (ssh_sftp_loop_iteration() < 0)
900 bufsize
= back
->sendbuffer(backhandle
);
907 int scp_send_finish(void)
910 struct fxp_attrs attrs
;
911 struct sftp_packet
*pktin
;
912 struct sftp_request
*req
, *rreq
;
915 while (!xfer_done(scp_sftp_xfer
)) {
917 xfer_upload_gotpkt(scp_sftp_xfer
, pktin
);
919 xfer_cleanup(scp_sftp_xfer
);
921 if (!scp_sftp_filehandle
) {
925 attrs
.flags
= SSH_FILEXFER_ATTR_ACMODTIME
;
926 attrs
.atime
= scp_sftp_atime
;
927 attrs
.mtime
= scp_sftp_mtime
;
928 sftp_register(req
= fxp_fsetstat_send(scp_sftp_filehandle
, attrs
));
929 rreq
= sftp_find_request(pktin
= sftp_recv());
931 ret
= fxp_fsetstat_recv(pktin
, rreq
);
933 tell_user(stderr
, "unable to set file times: %s\n", fxp_error());
937 sftp_register(req
= fxp_close_send(scp_sftp_filehandle
));
938 rreq
= sftp_find_request(pktin
= sftp_recv());
940 fxp_close_recv(pktin
, rreq
);
944 back
->send(backhandle
, "", 1);
949 char *scp_save_remotepath(void)
952 return scp_sftp_remotepath
;
957 void scp_restore_remotepath(char *data
)
960 scp_sftp_remotepath
= data
;
963 int scp_send_dirname(char *name
, int modes
)
968 struct fxp_attrs attrs
;
969 struct sftp_packet
*pktin
;
970 struct sftp_request
*req
, *rreq
;
973 if (scp_sftp_targetisdir
) {
974 fullname
= dupcat(scp_sftp_remotepath
, "/", name
, NULL
);
976 fullname
= dupstr(scp_sftp_remotepath
);
980 * We don't worry about whether we managed to create the
981 * directory, because if it exists already it's OK just to
982 * use it. Instead, we will stat it afterwards, and if it
983 * exists and is a directory we will assume we were either
984 * successful or it didn't matter.
986 sftp_register(req
= fxp_mkdir_send(fullname
));
987 rreq
= sftp_find_request(pktin
= sftp_recv());
989 ret
= fxp_mkdir_recv(pktin
, rreq
);
994 err
= "server reported no error";
996 sftp_register(req
= fxp_stat_send(fullname
));
997 rreq
= sftp_find_request(pktin
= sftp_recv());
999 ret
= fxp_stat_recv(pktin
, rreq
, &attrs
);
1001 if (!ret
|| !(attrs
.flags
& SSH_FILEXFER_ATTR_PERMISSIONS
) ||
1002 !(attrs
.permissions
& 0040000)) {
1003 tell_user(stderr
, "unable to create directory %s: %s",
1009 scp_sftp_remotepath
= fullname
;
1014 sprintf(buf
, "D%04o 0 ", modes
);
1015 back
->send(backhandle
, buf
, strlen(buf
));
1016 back
->send(backhandle
, name
, strlen(name
));
1017 back
->send(backhandle
, "\n", 1);
1022 int scp_send_enddir(void)
1025 sfree(scp_sftp_remotepath
);
1028 back
->send(backhandle
, "E\n", 2);
1034 * Yes, I know; I have an scp_sink_setup _and_ an scp_sink_init.
1035 * That's bad. The difference is that scp_sink_setup is called once
1036 * right at the start, whereas scp_sink_init is called to
1037 * initialise every level of recursion in the protocol.
1039 int scp_sink_setup(char *source
, int preserve
, int recursive
)
1045 tell_user(stderr
, "unable to initialise SFTP: %s", fxp_error());
1050 * It's possible that the source string we've been given
1051 * contains a wildcard. If so, we must split the directory
1052 * away from the wildcard itself (throwing an error if any
1053 * wildcardness comes before the final slash) and arrange
1054 * things so that a dirstack entry will be set up.
1056 newsource
= snewn(1+strlen(source
), char);
1057 if (!wc_unescape(newsource
, source
)) {
1058 /* Yes, here we go; it's a wildcard. Bah. */
1059 char *dupsource
, *lastpart
, *dirpart
, *wildcard
;
1060 dupsource
= dupstr(source
);
1061 lastpart
= stripslashes(dupsource
, 0);
1062 wildcard
= dupstr(lastpart
);
1064 if (*dupsource
&& dupsource
[1]) {
1066 * The remains of dupsource are at least two
1067 * characters long, meaning the pathname wasn't
1068 * empty or just `/'. Hence, we remove the trailing
1071 lastpart
[-1] = '\0';
1072 } else if (!*dupsource
) {
1074 * The remains of dupsource are _empty_ - the whole
1075 * pathname was a wildcard. Hence we need to
1076 * replace it with ".".
1079 dupsource
= dupstr(".");
1083 * Now we have separated our string into dupsource (the
1084 * directory part) and wildcard. Both of these will
1085 * need freeing at some point. Next step is to remove
1086 * wildcard escapes from the directory part, throwing
1087 * an error if it contains a real wildcard.
1089 dirpart
= snewn(1+strlen(dupsource
), char);
1090 if (!wc_unescape(dirpart
, dupsource
)) {
1091 tell_user(stderr
, "%s: multiple-level wildcards unsupported",
1101 * Now we have dirpart (unescaped, ie a valid remote
1102 * path), and wildcard (a wildcard). This will be
1103 * sufficient to arrange a dirstack entry.
1105 scp_sftp_remotepath
= dirpart
;
1106 scp_sftp_wildcard
= wildcard
;
1109 scp_sftp_remotepath
= newsource
;
1110 scp_sftp_wildcard
= NULL
;
1112 scp_sftp_preserve
= preserve
;
1113 scp_sftp_recursive
= recursive
;
1114 scp_sftp_donethistarget
= 0;
1115 scp_sftp_dirstack_head
= NULL
;
1120 int scp_sink_init(void)
1123 back
->send(backhandle
, "", 1);
1128 #define SCP_SINK_FILE 1
1129 #define SCP_SINK_DIR 2
1130 #define SCP_SINK_ENDDIR 3
1131 #define SCP_SINK_RETRY 4 /* not an action; just try again */
1132 struct scp_sink_action
{
1133 int action
; /* FILE, DIR, ENDDIR */
1134 char *buf
; /* will need freeing after use */
1135 char *name
; /* filename or dirname (not ENDDIR) */
1136 int mode
; /* access mode (not ENDDIR) */
1137 uint64 size
; /* file size (not ENDDIR) */
1138 int settime
; /* 1 if atime and mtime are filled */
1139 unsigned long atime
, mtime
; /* access times for the file */
1142 int scp_get_sink_action(struct scp_sink_action
*act
)
1146 int must_free_fname
;
1147 struct fxp_attrs attrs
;
1148 struct sftp_packet
*pktin
;
1149 struct sftp_request
*req
, *rreq
;
1152 if (!scp_sftp_dirstack_head
) {
1153 if (!scp_sftp_donethistarget
) {
1155 * Simple case: we are only dealing with one file.
1157 fname
= scp_sftp_remotepath
;
1158 must_free_fname
= 0;
1159 scp_sftp_donethistarget
= 1;
1162 * Even simpler case: one file _which we've done_.
1163 * Return 1 (finished).
1169 * We're now in the middle of stepping through a list
1170 * of names returned from fxp_readdir(); so let's carry
1173 struct scp_sftp_dirstack
*head
= scp_sftp_dirstack_head
;
1174 while (head
->namepos
< head
->namelen
&&
1175 (is_dots(head
->names
[head
->namepos
].filename
) ||
1177 !wc_match(head
->wildcard
,
1178 head
->names
[head
->namepos
].filename
))))
1179 head
->namepos
++; /* skip . and .. */
1180 if (head
->namepos
< head
->namelen
) {
1181 head
->matched_something
= 1;
1182 fname
= dupcat(head
->dirpath
, "/",
1183 head
->names
[head
->namepos
++].filename
,
1185 must_free_fname
= 1;
1188 * We've come to the end of the list; pop it off
1189 * the stack and return an ENDDIR action (or RETRY
1190 * if this was a wildcard match).
1192 if (head
->wildcard
) {
1193 act
->action
= SCP_SINK_RETRY
;
1194 if (!head
->matched_something
) {
1195 tell_user(stderr
, "pscp: wildcard '%s' matched "
1196 "no files", head
->wildcard
);
1199 sfree(head
->wildcard
);
1202 act
->action
= SCP_SINK_ENDDIR
;
1205 sfree(head
->dirpath
);
1207 scp_sftp_dirstack_head
= head
->next
;
1215 * Now we have a filename. Stat it, and see if it's a file
1218 sftp_register(req
= fxp_stat_send(fname
));
1219 rreq
= sftp_find_request(pktin
= sftp_recv());
1220 assert(rreq
== req
);
1221 ret
= fxp_stat_recv(pktin
, rreq
, &attrs
);
1223 if (!ret
|| !(attrs
.flags
& SSH_FILEXFER_ATTR_PERMISSIONS
)) {
1224 tell_user(stderr
, "unable to identify %s: %s", fname
,
1225 ret ?
"file type not supplied" : fxp_error());
1230 if (attrs
.permissions
& 0040000) {
1231 struct scp_sftp_dirstack
*newitem
;
1232 struct fxp_handle
*dirhandle
;
1233 int nnames
, namesize
;
1234 struct fxp_name
*ournames
;
1235 struct fxp_names
*names
;
1238 * It's a directory. If we're not in recursive mode,
1239 * this merits a complaint (which is fatal if the name
1240 * was specified directly, but not if it was matched by
1243 * We skip this complaint completely if
1244 * scp_sftp_wildcard is set, because that's an
1245 * indication that we're not actually supposed to
1246 * _recursively_ transfer the dir, just scan it for
1247 * things matching the wildcard.
1249 if (!scp_sftp_recursive
&& !scp_sftp_wildcard
) {
1250 tell_user(stderr
, "pscp: %s: is a directory", fname
);
1252 if (must_free_fname
) sfree(fname
);
1253 if (scp_sftp_dirstack_head
) {
1254 act
->action
= SCP_SINK_RETRY
;
1262 * Otherwise, the fun begins. We must fxp_opendir() the
1263 * directory, slurp the filenames into memory, return
1264 * SCP_SINK_DIR (unless this is a wildcard match), and
1265 * set targetisdir. The next time we're called, we will
1266 * run through the list of filenames one by one,
1267 * matching them against a wildcard if present.
1269 * If targetisdir is _already_ set (meaning we're
1270 * already in the middle of going through another such
1271 * list), we must push the other (target,namelist) pair
1274 sftp_register(req
= fxp_opendir_send(fname
));
1275 rreq
= sftp_find_request(pktin
= sftp_recv());
1276 assert(rreq
== req
);
1277 dirhandle
= fxp_opendir_recv(pktin
, rreq
);
1280 tell_user(stderr
, "scp: unable to open directory %s: %s",
1281 fname
, fxp_error());
1282 if (must_free_fname
) sfree(fname
);
1286 nnames
= namesize
= 0;
1291 sftp_register(req
= fxp_readdir_send(dirhandle
));
1292 rreq
= sftp_find_request(pktin
= sftp_recv());
1293 assert(rreq
== req
);
1294 names
= fxp_readdir_recv(pktin
, rreq
);
1296 if (names
== NULL
) {
1297 if (fxp_error_type() == SSH_FX_EOF
)
1299 tell_user(stderr
, "scp: reading directory %s: %s\n",
1300 fname
, fxp_error());
1301 if (must_free_fname
) sfree(fname
);
1306 if (names
->nnames
== 0) {
1307 fxp_free_names(names
);
1310 if (nnames
+ names
->nnames
>= namesize
) {
1311 namesize
+= names
->nnames
+ 128;
1312 ournames
= sresize(ournames
, namesize
, struct fxp_name
);
1314 for (i
= 0; i
< names
->nnames
; i
++) {
1315 if (!strcmp(names
->names
[i
].filename
, ".") ||
1316 !strcmp(names
->names
[i
].filename
, "..")) {
1318 * . and .. are normal consequences of
1319 * reading a directory, and aren't worth
1320 * complaining about.
1322 } else if (!vet_filename(names
->names
[i
].filename
)) {
1323 tell_user(stderr
, "ignoring potentially dangerous server-"
1324 "supplied filename '%s'\n",
1325 names
->names
[i
].filename
);
1327 ournames
[nnames
++] = names
->names
[i
];
1329 names
->nnames
= 0; /* prevent free_names */
1330 fxp_free_names(names
);
1332 sftp_register(req
= fxp_close_send(dirhandle
));
1333 rreq
= sftp_find_request(pktin
= sftp_recv());
1334 assert(rreq
== req
);
1335 fxp_close_recv(pktin
, rreq
);
1337 newitem
= snew(struct scp_sftp_dirstack
);
1338 newitem
->next
= scp_sftp_dirstack_head
;
1339 newitem
->names
= ournames
;
1340 newitem
->namepos
= 0;
1341 newitem
->namelen
= nnames
;
1342 if (must_free_fname
)
1343 newitem
->dirpath
= fname
;
1345 newitem
->dirpath
= dupstr(fname
);
1346 if (scp_sftp_wildcard
) {
1347 newitem
->wildcard
= scp_sftp_wildcard
;
1348 newitem
->matched_something
= 0;
1349 scp_sftp_wildcard
= NULL
;
1351 newitem
->wildcard
= NULL
;
1353 scp_sftp_dirstack_head
= newitem
;
1355 if (newitem
->wildcard
) {
1356 act
->action
= SCP_SINK_RETRY
;
1358 act
->action
= SCP_SINK_DIR
;
1359 act
->buf
= dupstr(stripslashes(fname
, 0));
1360 act
->name
= act
->buf
;
1361 act
->size
= uint64_make(0,0); /* duhh, it's a directory */
1362 act
->mode
= 07777 & attrs
.permissions
;
1363 if (scp_sftp_preserve
&&
1364 (attrs
.flags
& SSH_FILEXFER_ATTR_ACMODTIME
)) {
1365 act
->atime
= attrs
.atime
;
1366 act
->mtime
= attrs
.mtime
;
1375 * It's a file. Return SCP_SINK_FILE.
1377 act
->action
= SCP_SINK_FILE
;
1378 act
->buf
= dupstr(stripslashes(fname
, 0));
1379 act
->name
= act
->buf
;
1380 if (attrs
.flags
& SSH_FILEXFER_ATTR_SIZE
) {
1381 act
->size
= attrs
.size
;
1383 act
->size
= uint64_make(ULONG_MAX
,ULONG_MAX
); /* no idea */
1384 act
->mode
= 07777 & attrs
.permissions
;
1385 if (scp_sftp_preserve
&&
1386 (attrs
.flags
& SSH_FILEXFER_ATTR_ACMODTIME
)) {
1387 act
->atime
= attrs
.atime
;
1388 act
->mtime
= attrs
.mtime
;
1392 if (must_free_fname
)
1393 scp_sftp_currentname
= fname
;
1395 scp_sftp_currentname
= dupstr(fname
);
1410 if (ssh_scp_recv((unsigned char *) &ch
, 1) <= 0)
1413 bump("Protocol error: Unexpected newline");
1417 if (ssh_scp_recv((unsigned char *) &ch
, 1) <= 0)
1418 bump("Lost connection");
1421 act
->buf
= sresize(act
->buf
, bufsize
, char);
1424 } while (ch
!= '\n');
1425 act
->buf
[i
- 1] = '\0';
1427 case '\01': /* error */
1428 tell_user(stderr
, "%s\n", act
->buf
);
1430 continue; /* go round again */
1431 case '\02': /* fatal error */
1432 bump("%s", act
->buf
);
1434 back
->send(backhandle
, "", 1);
1435 act
->action
= SCP_SINK_ENDDIR
;
1438 if (sscanf(act
->buf
, "%ld %*d %ld %*d",
1439 &act
->mtime
, &act
->atime
) == 2) {
1441 back
->send(backhandle
, "", 1);
1442 continue; /* go round again */
1444 bump("Protocol error: Illegal time format");
1447 act
->action
= (action
== 'C' ? SCP_SINK_FILE
: SCP_SINK_DIR
);
1450 bump("Protocol error: Expected control record");
1453 * We will go round this loop only once, unless we hit
1460 * If we get here, we must have seen SCP_SINK_FILE or
1466 if (sscanf(act
->buf
, "%o %s %n", &act
->mode
, sizestr
, &i
) != 2)
1467 bump("Protocol error: Illegal file descriptor format");
1468 act
->size
= uint64_from_decimal(sizestr
);
1469 act
->name
= act
->buf
+ i
;
1475 int scp_accept_filexfer(void)
1478 struct sftp_packet
*pktin
;
1479 struct sftp_request
*req
, *rreq
;
1481 sftp_register(req
= fxp_open_send(scp_sftp_currentname
, SSH_FXF_READ
));
1482 rreq
= sftp_find_request(pktin
= sftp_recv());
1483 assert(rreq
== req
);
1484 scp_sftp_filehandle
= fxp_open_recv(pktin
, rreq
);
1486 if (!scp_sftp_filehandle
) {
1487 tell_user(stderr
, "pscp: unable to open %s: %s",
1488 scp_sftp_currentname
, fxp_error());
1492 scp_sftp_fileoffset
= uint64_make(0, 0);
1493 scp_sftp_xfer
= xfer_download_init(scp_sftp_filehandle
,
1494 scp_sftp_fileoffset
);
1495 sfree(scp_sftp_currentname
);
1498 back
->send(backhandle
, "", 1);
1499 return 0; /* can't fail */
1503 int scp_recv_filedata(char *data
, int len
)
1506 struct sftp_packet
*pktin
;
1510 xfer_download_queue(scp_sftp_xfer
);
1511 pktin
= sftp_recv();
1512 ret
= xfer_download_gotpkt(scp_sftp_xfer
, pktin
);
1515 tell_user(stderr
, "pscp: error while reading: %s", fxp_error());
1520 if (xfer_download_data(scp_sftp_xfer
, &vbuf
, &actuallen
)) {
1522 * This assertion relies on the fact that the natural
1523 * block size used in the xfer manager is at most that
1524 * used in this module. I don't like crossing layers in
1525 * this way, but it'll do for now.
1527 assert(actuallen
<= len
);
1528 memcpy(data
, vbuf
, actuallen
);
1533 scp_sftp_fileoffset
= uint64_add32(scp_sftp_fileoffset
, actuallen
);
1537 return ssh_scp_recv((unsigned char *) data
, len
);
1541 int scp_finish_filerecv(void)
1544 struct sftp_packet
*pktin
;
1545 struct sftp_request
*req
, *rreq
;
1548 * Ensure that xfer_done() will work correctly, so we can
1549 * clean up any outstanding requests from the file
1552 xfer_set_error(scp_sftp_xfer
);
1553 while (!xfer_done(scp_sftp_xfer
)) {
1557 pktin
= sftp_recv();
1558 xfer_download_gotpkt(scp_sftp_xfer
, pktin
);
1559 if (xfer_download_data(scp_sftp_xfer
, &vbuf
, &len
))
1562 xfer_cleanup(scp_sftp_xfer
);
1564 sftp_register(req
= fxp_close_send(scp_sftp_filehandle
));
1565 rreq
= sftp_find_request(pktin
= sftp_recv());
1566 assert(rreq
== req
);
1567 fxp_close_recv(pktin
, rreq
);
1570 back
->send(backhandle
, "", 1);
1575 /* ----------------------------------------------------------------------
1576 * Send an error message to the other side and to the screen.
1577 * Increment error counter.
1579 static void run_err(const char *fmt
, ...)
1585 str
= dupvprintf(fmt
, ap
);
1586 str2
= dupcat("scp: ", str
, "\n", NULL
);
1588 scp_send_errmsg(str2
);
1589 tell_user(stderr
, "%s", str2
);
1595 * Execute the source part of the SCP protocol.
1597 static void source(char *src
)
1600 unsigned long mtime
, atime
;
1606 time_t stat_starttime
, stat_lasttime
;
1608 attr
= file_type(src
);
1609 if (attr
== FILE_TYPE_NONEXISTENT
||
1610 attr
== FILE_TYPE_WEIRD
) {
1611 run_err("%s: %s file or directory", src
,
1612 (attr
== FILE_TYPE_WEIRD ?
"Not a" : "No such"));
1616 if (attr
== FILE_TYPE_DIRECTORY
) {
1619 * Avoid . and .. directories.
1622 p
= strrchr(src
, '/');
1624 p
= strrchr(src
, '\\');
1629 if (!strcmp(p
, ".") || !strcmp(p
, ".."))
1630 /* skip . and .. */ ;
1634 run_err("%s: not a regular file", src
);
1639 if ((last
= strrchr(src
, '/')) == NULL
)
1643 if (strrchr(last
, '\\') != NULL
)
1644 last
= strrchr(last
, '\\') + 1;
1645 if (last
== src
&& strchr(src
, ':') != NULL
)
1646 last
= strchr(src
, ':') + 1;
1648 f
= open_existing_file(src
, &size
, &mtime
, &atime
);
1650 run_err("%s: Cannot open file", src
);
1654 if (scp_send_filetimes(mtime
, atime
))
1660 uint64_decimal(size
, sizestr
);
1661 tell_user(stderr
, "Sending file %s, size=%s", last
, sizestr
);
1663 if (scp_send_filename(last
, size
, 0644))
1666 stat_bytes
= uint64_make(0,0);
1667 stat_starttime
= time(NULL
);
1670 for (i
= uint64_make(0,0);
1671 uint64_compare(i
,size
) < 0;
1672 i
= uint64_add32(i
,4096)) {
1673 char transbuf
[4096];
1676 if (uint64_compare(uint64_add32(i
, k
),size
) > 0) /* i + k > size */
1677 k
= (uint64_subtract(size
, i
)).lo
; /* k = size - i; */
1678 if ((j
= read_from_file(f
, transbuf
, k
)) != k
) {
1681 bump("%s: Read error", src
);
1683 if (scp_send_filedata(transbuf
, k
))
1684 bump("%s: Network error occurred", src
);
1687 stat_bytes
= uint64_add32(stat_bytes
, k
);
1688 if (time(NULL
) != stat_lasttime
||
1689 (uint64_compare(uint64_add32(i
, k
), size
) == 0)) {
1690 stat_lasttime
= time(NULL
);
1691 print_stats(last
, size
, stat_bytes
,
1692 stat_starttime
, stat_lasttime
);
1699 (void) scp_send_finish();
1703 * Recursively send the contents of a directory.
1705 static void rsource(char *src
)
1711 if ((last
= strrchr(src
, '/')) == NULL
)
1715 if (strrchr(last
, '\\') != NULL
)
1716 last
= strrchr(last
, '\\') + 1;
1717 if (last
== src
&& strchr(src
, ':') != NULL
)
1718 last
= strchr(src
, ':') + 1;
1720 /* maybe send filetime */
1722 save_target
= scp_save_remotepath();
1725 tell_user(stderr
, "Entering directory: %s", last
);
1726 if (scp_send_dirname(last
, 0755))
1729 dir
= open_directory(src
);
1732 while ((filename
= read_filename(dir
)) != NULL
) {
1733 char *foundfile
= dupcat(src
, "/", filename
, NULL
);
1739 close_directory(dir
);
1741 (void) scp_send_enddir();
1743 scp_restore_remotepath(save_target
);
1747 * Execute the sink part of the SCP protocol.
1749 static void sink(char *targ
, char *src
)
1759 time_t stat_starttime
, stat_lasttime
;
1762 attr
= file_type(targ
);
1763 if (attr
== FILE_TYPE_DIRECTORY
)
1766 if (targetshouldbedirectory
&& !targisdir
)
1767 bump("%s: Not a directory", targ
);
1771 struct scp_sink_action act
;
1772 if (scp_get_sink_action(&act
))
1775 if (act
.action
== SCP_SINK_ENDDIR
)
1778 if (act
.action
== SCP_SINK_RETRY
)
1783 * Prevent the remote side from maliciously writing to
1784 * files outside the target area by sending a filename
1785 * containing `../'. In fact, it shouldn't be sending
1786 * filenames with any slashes or colons in at all; so
1787 * we'll find the last slash, backslash or colon in the
1788 * filename and use only the part after that. (And
1791 * In addition, we also ensure here that if we're
1792 * copying a single file and the target is a directory
1793 * (common usage: `pscp host:filename .') the remote
1794 * can't send us a _different_ file name. We can
1795 * distinguish this case because `src' will be non-NULL
1796 * and the last component of that will fail to match
1797 * (the last component of) the name sent.
1799 * Well, not always; if `src' is a wildcard, we do
1800 * expect to get back filenames that don't correspond
1801 * exactly to it. Ideally in this case, we would like
1802 * to ensure that the returned filename actually
1803 * matches the wildcard pattern - but one of SCP's
1804 * protocol infelicities is that wildcard matching is
1805 * done at the server end _by the server's rules_ and
1806 * so in general this is infeasible. Hence, we only
1807 * accept filenames that don't correspond to `src' if
1808 * unsafe mode is enabled or we are using SFTP (which
1809 * resolves remote wildcards on the client side and can
1812 char *striptarget
, *stripsrc
;
1814 striptarget
= stripslashes(act
.name
, 1);
1815 if (striptarget
!= act
.name
) {
1816 tell_user(stderr
, "warning: remote host sent a compound"
1817 " pathname '%s'", act
.name
);
1818 tell_user(stderr
, " renaming local file to '%s'",
1823 * Also check to see if the target filename is '.' or
1824 * '..', or indeed '...' and so on because Windows
1825 * appears to interpret those like '..'.
1827 if (is_dots(striptarget
)) {
1828 bump("security violation: remote host attempted to write to"
1829 " a '.' or '..' path!");
1833 stripsrc
= stripslashes(src
, 1);
1834 if (strcmp(striptarget
, stripsrc
) &&
1835 !using_sftp
&& !scp_unsafe_mode
) {
1836 tell_user(stderr
, "warning: remote host tried to write "
1837 "to a file called '%s'", striptarget
);
1838 tell_user(stderr
, " when we requested a file "
1839 "called '%s'.", stripsrc
);
1840 tell_user(stderr
, " If this is a wildcard, "
1841 "consider upgrading to SSH-2 or using");
1842 tell_user(stderr
, " the '-unsafe' option. Renaming"
1843 " of this file has been disallowed.");
1844 /* Override the name the server provided with our own. */
1845 striptarget
= stripsrc
;
1849 if (targ
[0] != '\0')
1850 destfname
= dir_file_cat(targ
, striptarget
);
1852 destfname
= dupstr(striptarget
);
1855 * In this branch of the if, the target area is a
1856 * single file with an explicitly specified name in any
1857 * case, so there's no danger.
1859 destfname
= dupstr(targ
);
1861 attr
= file_type(destfname
);
1862 exists
= (attr
!= FILE_TYPE_NONEXISTENT
);
1864 if (act
.action
== SCP_SINK_DIR
) {
1865 if (exists
&& attr
!= FILE_TYPE_DIRECTORY
) {
1866 run_err("%s: Not a directory", destfname
);
1870 if (!create_directory(destfname
)) {
1871 run_err("%s: Cannot create directory", destfname
);
1875 sink(destfname
, NULL
);
1876 /* can we set the timestamp for directories ? */
1880 f
= open_new_file(destfname
);
1882 run_err("%s: Cannot create file", destfname
);
1886 if (scp_accept_filexfer())
1889 stat_bytes
= uint64_make(0, 0);
1890 stat_starttime
= time(NULL
);
1892 stat_name
= stripslashes(destfname
, 1);
1894 received
= uint64_make(0, 0);
1895 while (uint64_compare(received
,act
.size
) < 0) {
1896 char transbuf
[32768];
1899 blksize
= uint64_make(0, 32768);
1900 if (uint64_compare(blksize
,uint64_subtract(act
.size
,received
)) > 0)
1901 blksize
= uint64_subtract(act
.size
,received
);
1902 read
= scp_recv_filedata(transbuf
, (int)blksize
.lo
);
1904 bump("Lost connection");
1907 if (write_to_file(f
, transbuf
, read
) != (int)read
) {
1909 /* FIXME: in sftp we can actually abort the transfer */
1911 printf("\r%-25.25s | %50s\n",
1913 "Write error.. waiting for end of file");
1917 stat_bytes
= uint64_add32(stat_bytes
,read
);
1918 if (time(NULL
) > stat_lasttime
||
1919 uint64_compare(uint64_add32(received
, read
), act
.size
) == 0) {
1920 stat_lasttime
= time(NULL
);
1921 print_stats(stat_name
, act
.size
, stat_bytes
,
1922 stat_starttime
, stat_lasttime
);
1925 received
= uint64_add32(received
, read
);
1928 set_file_times(f
, act
.mtime
, act
.atime
);
1933 run_err("%s: Write error", destfname
);
1936 (void) scp_finish_filerecv();
1943 * We will copy local files to a remote server.
1945 static void toremote(int argc
, char *argv
[])
1947 char *src
, *targ
, *host
, *user
;
1951 targ
= argv
[argc
- 1];
1953 /* Separate host from filename */
1957 bump("targ == NULL in toremote()");
1961 /* Substitute "." for empty target */
1963 /* Separate host and username */
1965 host
= strrchr(host
, '@');
1976 if (colon(argv
[0]) != NULL
)
1977 bump("%s: Remote to remote not supported", argv
[0]);
1979 wc_type
= test_wildcard(argv
[0], 1);
1980 if (wc_type
== WCTYPE_NONEXISTENT
)
1981 bump("%s: No such file or directory\n", argv
[0]);
1982 else if (wc_type
== WCTYPE_WILDCARD
)
1983 targetshouldbedirectory
= 1;
1986 cmd
= dupprintf("scp%s%s%s%s -t %s",
1987 verbose ?
" -v" : "",
1988 recursive ?
" -r" : "",
1989 preserve ?
" -p" : "",
1990 targetshouldbedirectory ?
" -d" : "", targ
);
1991 do_cmd(host
, user
, cmd
);
1994 if (scp_source_setup(targ
, targetshouldbedirectory
))
1997 for (i
= 0; i
< argc
- 1; i
++) {
1999 if (colon(src
) != NULL
) {
2000 tell_user(stderr
, "%s: Remote to remote not supported\n", src
);
2005 wc_type
= test_wildcard(src
, 1);
2006 if (wc_type
== WCTYPE_NONEXISTENT
) {
2007 run_err("%s: No such file or directory", src
);
2009 } else if (wc_type
== WCTYPE_FILENAME
) {
2013 WildcardMatcher
*wc
;
2016 wc
= begin_wildcard_matching(src
);
2018 run_err("%s: No such file or directory", src
);
2022 while ((filename
= wildcard_get_filename(wc
)) != NULL
) {
2027 finish_wildcard_matching(wc
);
2033 * We will copy files from a remote server to the local machine.
2035 static void tolocal(int argc
, char *argv
[])
2037 char *src
, *targ
, *host
, *user
;
2041 bump("More than one remote source not supported");
2046 /* Separate host from filename */
2050 bump("Local to local copy not supported");
2054 /* Substitute "." for empty filename */
2056 /* Separate username and hostname */
2058 host
= strrchr(host
, '@');
2068 cmd
= dupprintf("scp%s%s%s%s -f %s",
2069 verbose ?
" -v" : "",
2070 recursive ?
" -r" : "",
2071 preserve ?
" -p" : "",
2072 targetshouldbedirectory ?
" -d" : "", src
);
2073 do_cmd(host
, user
, cmd
);
2076 if (scp_sink_setup(src
, preserve
, recursive
))
2083 * We will issue a list command to get a remote directory.
2085 static void get_dir_list(int argc
, char *argv
[])
2087 char *src
, *host
, *user
;
2093 /* Separate host from filename */
2097 bump("Local file listing not supported");
2101 /* Substitute "." for empty filename */
2103 /* Separate username and hostname */
2105 host
= strrchr(host
, '@');
2115 cmd
= snewn(4 * strlen(src
) + 100, char);
2116 strcpy(cmd
, "ls -la '");
2117 p
= cmd
+ strlen(cmd
);
2118 for (q
= src
; *q
; q
++) {
2131 do_cmd(host
, user
, cmd
);
2135 scp_sftp_listdir(src
);
2137 while (ssh_scp_recv((unsigned char *) &c
, 1) > 0)
2138 tell_char(stdout
, c
);
2143 * Short description of parameters.
2145 static void usage(void)
2147 printf("PuTTY Secure Copy client\n");
2148 printf("%s\n", ver
);
2149 printf("Usage: pscp [options] [user@]host:source target\n");
2151 (" pscp [options] source [source...] [user@]host:target\n");
2152 printf(" pscp [options] -ls [user@]host:filespec\n");
2153 printf("Options:\n");
2154 printf(" -V print version information and exit\n");
2155 printf(" -pgpfp print PGP key fingerprints and exit\n");
2156 printf(" -p preserve file attributes\n");
2157 printf(" -q quiet, don't show statistics\n");
2158 printf(" -r copy directories recursively\n");
2159 printf(" -v show verbose messages\n");
2160 printf(" -load sessname Load settings from saved session\n");
2161 printf(" -P port connect to specified port\n");
2162 printf(" -l user connect with specified username\n");
2163 printf(" -pw passw login with specified password\n");
2164 printf(" -1 -2 force use of particular SSH protocol version\n");
2165 printf(" -4 -6 force use of IPv4 or IPv6\n");
2166 printf(" -C enable compression\n");
2167 printf(" -i key private key file for authentication\n");
2168 printf(" -noagent disable use of Pageant\n");
2169 printf(" -agent enable use of Pageant\n");
2170 printf(" -batch disable all interactive prompts\n");
2171 printf(" -unsafe allow server-side wildcards (DANGEROUS)\n");
2172 printf(" -sftp force use of SFTP protocol\n");
2173 printf(" -scp force use of SCP protocol\n");
2176 * -gui is an internal option, used by GUI front ends to get
2177 * pscp to pass progress reports back to them. It's not an
2178 * ordinary user-accessible option, so it shouldn't be part of
2179 * the command-line help. The only people who need to know
2180 * about it are programmers, and they can read the source.
2183 (" -gui hWnd GUI mode with the windows handle for receiving messages\n");
2190 printf("pscp: %s\n", ver
);
2194 void cmdline_error(char *p
, ...)
2197 fprintf(stderr
, "pscp: ");
2199 vfprintf(stderr
, p
, ap
);
2201 fprintf(stderr
, "\n try typing just \"pscp\" for help\n");
2206 * Main program. (Called `psftp_main' because it gets called from
2207 * *sftp.c; bit silly, I know, but it had to be called _something_.)
2209 int psftp_main(int argc
, char *argv
[])
2213 default_protocol
= PROT_TELNET
;
2216 #ifdef FLAG_SYNCAGENT
2220 cmdline_tooltype
= TOOLTYPE_FILETRANSFER
;
2223 /* Load Default Settings before doing anything else. */
2224 do_defaults(NULL
, &cfg
);
2225 loaded_session
= FALSE
;
2227 for (i
= 1; i
< argc
; i
++) {
2229 if (argv
[i
][0] != '-')
2231 ret
= cmdline_process_param(argv
[i
], i
+1<argc?argv
[i
+1]:NULL
, 1, &cfg
);
2233 cmdline_error("option \"%s\" requires an argument", argv
[i
]);
2234 } else if (ret
== 2) {
2235 i
++; /* skip next argument */
2236 } else if (ret
== 1) {
2237 /* We have our own verbosity in addition to `flags'. */
2238 if (flags
& FLAG_VERBOSE
)
2240 } else if (strcmp(argv
[i
], "-pgpfp") == 0) {
2243 } else if (strcmp(argv
[i
], "-r") == 0) {
2245 } else if (strcmp(argv
[i
], "-p") == 0) {
2247 } else if (strcmp(argv
[i
], "-q") == 0) {
2249 } else if (strcmp(argv
[i
], "-h") == 0 || strcmp(argv
[i
], "-?") == 0) {
2251 } else if (strcmp(argv
[i
], "-V") == 0) {
2253 } else if (strcmp(argv
[i
], "-ls") == 0) {
2255 } else if (strcmp(argv
[i
], "-batch") == 0) {
2256 console_batch_mode
= 1;
2257 } else if (strcmp(argv
[i
], "-unsafe") == 0) {
2258 scp_unsafe_mode
= 1;
2259 } else if (strcmp(argv
[i
], "-sftp") == 0) {
2260 try_scp
= 0; try_sftp
= 1;
2261 } else if (strcmp(argv
[i
], "-scp") == 0) {
2262 try_scp
= 1; try_sftp
= 0;
2263 } else if (strcmp(argv
[i
], "--") == 0) {
2267 cmdline_error("unknown option \"%s\"", argv
[i
]);
2277 get_dir_list(argc
, argv
);
2284 targetshouldbedirectory
= 1;
2286 if (colon(argv
[argc
- 1]) != NULL
)
2287 toremote(argc
, argv
);
2289 tolocal(argc
, argv
);
2292 if (back
!= NULL
&& back
->connected(backhandle
)) {
2294 back
->special(backhandle
, TS_EOF
);
2295 ssh_scp_recv((unsigned char *) &ch
, 1);
2300 console_provide_logctx(NULL
);
2301 back
->free(backhandle
);
2305 return (errs
== 0 ?
0 : 1);