2 * scp.c - Scp (Secure Copy) client for PuTTY.
3 * Joris van Rantwijk, Simon Tatham
5 * This is mainly based on ssh-1.2.26/scp.c by Timo Rinne & Tatu Ylonen.
6 * They, in turn, used stuff from BSD rcp.
8 * (SGT, 2001-09-10: Joris van Rantwijk assures me that although
9 * this file as originally submitted was inspired by, and
10 * _structurally_ based on, ssh-1.2.26's scp.c, there wasn't any
11 * actual code duplicated, so the above comment shouldn't give rise
12 * to licensing issues.)
22 #define PUTTY_DO_GLOBALS
31 static int verbose
= 0;
32 static int recursive
= 0;
33 static int preserve
= 0;
34 static int targetshouldbedirectory
= 0;
35 static int statistics
= 1;
36 static int prev_stats_len
= 0;
37 static int scp_unsafe_mode
= 0;
39 static int try_scp
= 1;
40 static int try_sftp
= 1;
41 static int main_cmd_is_sftp
= 0;
42 static int fallback_cmd_is_sftp
= 0;
43 static int using_sftp
= 0;
46 static void *backhandle
;
49 static void source(char *src
);
50 static void rsource(char *src
);
51 static void sink(char *targ
, char *src
);
54 * The maximum amount of queued data we accept before we stop and
55 * wait for the server to process some.
57 #define MAX_SCP_BUFSIZE 16384
59 void ldisc_send(void *handle
, char *buf
, int len
, int interactive
)
62 * This is only here because of the calls to ldisc_send(NULL,
63 * 0) in ssh.c. Nothing in PSCP actually needs to use the ldisc
64 * as an ldisc. So if we get called with any real data, I want
70 static void tell_char(FILE * stream
, char c
)
75 static void tell_str(FILE * stream
, char *str
)
79 for (i
= 0; i
< strlen(str
); ++i
)
80 tell_char(stream
, str
[i
]);
83 static void tell_user(FILE * stream
, char *fmt
, ...)
88 str
= dupvprintf(fmt
, ap
);
90 str2
= dupcat(str
, "\n", NULL
);
92 tell_str(stream
, str2
);
97 * Print an error message and perform a fatal exit.
99 void fatalbox(char *fmt
, ...)
104 str
= dupvprintf(fmt
, ap
);
105 str2
= dupcat("Fatal: ", str
, "\n", NULL
);
108 tell_str(stderr
, str2
);
114 void modalfatalbox(char *fmt
, ...)
119 str
= dupvprintf(fmt
, ap
);
120 str2
= dupcat("Fatal: ", str
, "\n", NULL
);
123 tell_str(stderr
, str2
);
129 void connection_fatal(void *frontend
, char *fmt
, ...)
134 str
= dupvprintf(fmt
, ap
);
135 str2
= dupcat("Fatal: ", str
, "\n", NULL
);
138 tell_str(stderr
, str2
);
146 * In pscp, all agent requests should be synchronous, so this is a
149 void agent_schedule_callback(void (*callback
)(void *, void *, int),
150 void *callback_ctx
, void *data
, int len
)
152 assert(!"We shouldn't be here");
156 * Receive a block of data from the SSH link. Block until all data
159 * To do this, we repeatedly call the SSH protocol module, with our
160 * own trap in from_backend() to catch the data that comes back. We
161 * do this until we have enough data.
164 static unsigned char *outptr
; /* where to put the data */
165 static unsigned outlen
; /* how much data required */
166 static unsigned char *pending
= NULL
; /* any spare data */
167 static unsigned pendlen
= 0, pendsize
= 0; /* length and phys. size of buffer */
168 int from_backend(void *frontend
, int is_stderr
, const char *data
, int datalen
)
170 unsigned char *p
= (unsigned char *) data
;
171 unsigned len
= (unsigned) datalen
;
174 * stderr data is just spouted to local stderr and otherwise
179 fwrite(data
, 1, len
, stderr
);
183 if ((outlen
> 0) && (len
> 0)) {
184 unsigned used
= outlen
;
187 memcpy(outptr
, p
, used
);
195 if (pendsize
< pendlen
+ len
) {
196 pendsize
= pendlen
+ len
+ 4096;
197 pending
= sresize(pending
, pendsize
, unsigned char);
199 memcpy(pending
+ pendlen
, p
, len
);
205 int from_backend_untrusted(void *frontend_handle
, const char *data
, int len
)
208 * No "untrusted" output should get here (the way the code is
209 * currently, it's all diverted by FLAG_STDERR).
211 assert(!"Unexpected call to from_backend_untrusted()");
212 return 0; /* not reached */
214 static int ssh_scp_recv(unsigned char *buf
, int len
)
220 * See if the pending-input block contains some of what we
224 unsigned pendused
= pendlen
;
225 if (pendused
> outlen
)
227 memcpy(outptr
, pending
, pendused
);
228 memmove(pending
, pending
+ pendused
, pendlen
- pendused
);
242 if (back
->exitcode(backhandle
) >= 0 || ssh_sftp_loop_iteration() < 0)
250 * Loop through the ssh connection and authentication process.
252 static void ssh_scp_init(void)
254 while (!back
->sendok(backhandle
)) {
255 if (ssh_sftp_loop_iteration() < 0)
259 /* Work out which backend we ended up using. */
260 if (!ssh_fallback_cmd(backhandle
))
261 using_sftp
= main_cmd_is_sftp
;
263 using_sftp
= fallback_cmd_is_sftp
;
267 tell_user(stderr
, "Using SFTP");
269 tell_user(stderr
, "Using SCP1");
274 * Print an error message and exit after closing the SSH link.
276 static void bump(char *fmt
, ...)
281 str
= dupvprintf(fmt
, ap
);
283 str2
= dupcat(str
, "\n", NULL
);
285 tell_str(stderr
, str2
);
289 if (back
!= NULL
&& back
->connected(backhandle
)) {
291 back
->special(backhandle
, TS_EOF
);
292 ssh_scp_recv((unsigned char *) &ch
, 1);
299 * Open an SSH connection to user@host and execute cmd.
301 static void do_cmd(char *host
, char *user
, char *cmd
)
307 if (host
== NULL
|| host
[0] == '\0')
308 bump("Empty host name");
311 * Remove fiddly bits of address: remove a colon suffix, and
312 * the square brackets around an IPv6 literal address.
314 if (host
[0] == '[') {
316 host
[strcspn(host
, "]")] = '\0';
318 host
[strcspn(host
, ":")] = '\0';
322 * If we haven't loaded session details already (e.g., from -load),
323 * try looking for a session called "host".
325 if (!loaded_session
) {
326 /* Try to load settings for `host' into a temporary config */
329 do_defaults(host
, &cfg2
);
330 if (cfg2
.host
[0] != '\0') {
331 /* Settings present and include hostname */
332 /* Re-load data into the real config. */
333 do_defaults(host
, &cfg
);
335 /* Session doesn't exist or mention a hostname. */
336 /* Use `host' as a bare hostname. */
337 strncpy(cfg
.host
, host
, sizeof(cfg
.host
) - 1);
338 cfg
.host
[sizeof(cfg
.host
) - 1] = '\0';
341 /* Patch in hostname `host' to session details. */
342 strncpy(cfg
.host
, host
, sizeof(cfg
.host
) - 1);
343 cfg
.host
[sizeof(cfg
.host
) - 1] = '\0';
347 * Force use of SSH. (If they got the protocol wrong we assume the
348 * port is useless too.)
350 if (cfg
.protocol
!= PROT_SSH
) {
351 cfg
.protocol
= PROT_SSH
;
356 * Enact command-line overrides.
358 cmdline_run_saved(&cfg
);
361 * Trim leading whitespace off the hostname if it's there.
364 int space
= strspn(cfg
.host
, " \t");
365 memmove(cfg
.host
, cfg
.host
+space
, 1+strlen(cfg
.host
)-space
);
368 /* See if host is of the form user@host */
369 if (cfg
.host
[0] != '\0') {
370 char *atsign
= strrchr(cfg
.host
, '@');
371 /* Make sure we're not overflowing the user field */
373 if (atsign
- cfg
.host
< sizeof cfg
.username
) {
374 strncpy(cfg
.username
, cfg
.host
, atsign
- cfg
.host
);
375 cfg
.username
[atsign
- cfg
.host
] = '\0';
377 memmove(cfg
.host
, atsign
+ 1, 1 + strlen(atsign
+ 1));
382 * Remove any remaining whitespace from the hostname.
386 while (cfg
.host
[p2
] != '\0') {
387 if (cfg
.host
[p2
] != ' ' && cfg
.host
[p2
] != '\t') {
388 cfg
.host
[p1
] = cfg
.host
[p2
];
397 if (user
!= NULL
&& user
[0] != '\0') {
398 strncpy(cfg
.username
, user
, sizeof(cfg
.username
) - 1);
399 cfg
.username
[sizeof(cfg
.username
) - 1] = '\0';
400 } else if (cfg
.username
[0] == '\0') {
401 user
= get_username();
403 bump("Empty user name");
406 tell_user(stderr
, "Guessing user name: %s", user
);
407 strncpy(cfg
.username
, user
, sizeof(cfg
.username
) - 1);
408 cfg
.username
[sizeof(cfg
.username
) - 1] = '\0';
414 * Disable scary things which shouldn't be enabled for simple
415 * things like SCP and SFTP: agent forwarding, port forwarding,
420 cfg
.portfwd
[0] = cfg
.portfwd
[1] = '\0';
423 * Set up main and possibly fallback command depending on
424 * options specified by user.
425 * Attempt to start the SFTP subsystem as a first choice,
426 * falling back to the provided scp command if that fails.
428 cfg
.remote_cmd_ptr2
= NULL
;
430 /* First choice is SFTP subsystem. */
431 main_cmd_is_sftp
= 1;
432 strcpy(cfg
.remote_cmd
, "sftp");
433 cfg
.ssh_subsys
= TRUE
;
435 /* Fallback is to use the provided scp command. */
436 fallback_cmd_is_sftp
= 0;
437 cfg
.remote_cmd_ptr2
= cmd
;
438 cfg
.ssh_subsys2
= FALSE
;
440 /* Since we're not going to try SCP, we may as well try
441 * harder to find an SFTP server, since in the current
442 * implementation we have a spare slot. */
443 fallback_cmd_is_sftp
= 1;
444 /* see psftp.c for full explanation of this kludge */
445 cfg
.remote_cmd_ptr2
=
446 "test -x /usr/lib/sftp-server && exec /usr/lib/sftp-server\n"
447 "test -x /usr/local/lib/sftp-server && exec /usr/local/lib/sftp-server\n"
449 cfg
.ssh_subsys2
= FALSE
;
452 /* Don't try SFTP at all; just try the scp command. */
453 main_cmd_is_sftp
= 0;
454 cfg
.remote_cmd_ptr
= cmd
;
455 cfg
.ssh_subsys
= FALSE
;
461 err
= back
->init(NULL
, &backhandle
, &cfg
, cfg
.host
, cfg
.port
, &realhost
,
462 0, cfg
.tcp_keepalives
);
464 bump("ssh_init: %s", err
);
465 logctx
= log_init(NULL
, &cfg
);
466 back
->provide_logctx(backhandle
, logctx
);
467 console_provide_logctx(logctx
);
469 if (verbose
&& realhost
!= NULL
)
470 tell_user(stderr
, "Connected to %s\n", realhost
);
475 * Update statistic information about current file.
477 static void print_stats(char *name
, uint64 size
, uint64 done
,
478 time_t start
, time_t now
)
489 elap
= (unsigned long) difftime(now
, start
);
492 ratebs
= (float) (uint64_to_double(done
) / elap
);
494 ratebs
= (float) uint64_to_double(done
);
497 eta
= (unsigned long) (uint64_to_double(uint64_subtract(size
, done
)));
499 eta
= (unsigned long)
500 ((uint64_to_double(uint64_subtract(size
, done
)) / ratebs
));
503 etastr
= dupprintf("%02ld:%02ld:%02ld",
504 eta
/ 3600, (eta
% 3600) / 60, eta
% 60);
506 donedbl
= uint64_to_double(done
);
507 sizedbl
= uint64_to_double(size
);
508 pct
= (int) (100 * (donedbl
* 1.0 / sizedbl
));
512 /* divide by 1024 to provide kB */
513 uint64_decimal(uint64_shift_right(done
, 10), donekb
);
514 len
= printf("\r%-25.25s | %s kB | %5.1f kB/s | ETA: %8s | %3d%%",
516 donekb
, ratebs
/ 1024.0, etastr
, pct
);
517 if (len
< prev_stats_len
)
518 printf("%*s", prev_stats_len
- len
, "");
519 prev_stats_len
= len
;
521 if (uint64_compare(done
, size
) == 0)
531 * Find a colon in str and return a pointer to the colon.
532 * This is used to separate hostname from filename.
534 static char *colon(char *str
)
536 /* We ignore a leading colon, since the hostname cannot be
537 empty. We also ignore a colon as second character because
538 of filenames like f:myfile.txt. */
539 if (str
[0] == '\0' || str
[0] == ':' ||
540 (str
[0] != '[' && str
[1] == ':'))
542 while (*str
!= '\0' && *str
!= ':' && *str
!= '/' && *str
!= '\\') {
544 /* Skip over IPv6 literal addresses
545 * (eg: 'jeroen@[2001:db8::1]:myfile.txt') */
546 char *ipv6_end
= strchr(str
, ']');
560 * Return a pointer to the portion of str that comes after the last
561 * slash (or backslash or colon, if `local' is TRUE).
563 static char *stripslashes(char *str
, int local
)
568 p
= strchr(str
, ':');
572 p
= strrchr(str
, '/');
576 p
= strrchr(str
, '\\');
584 * Determine whether a string is entirely composed of dots.
586 static int is_dots(char *str
)
588 return str
[strspn(str
, ".")] == '\0';
592 * Wait for a response from the other side.
593 * Return 0 if ok, -1 if error.
595 static int response(void)
597 char ch
, resp
, rbuf
[2048];
600 if (ssh_scp_recv((unsigned char *) &resp
, 1) <= 0)
601 bump("Lost connection");
611 case 2: /* fatal error */
613 if (ssh_scp_recv((unsigned char *) &ch
, 1) <= 0)
614 bump("Protocol error: Lost connection");
616 } while (p
< sizeof(rbuf
) && ch
!= '\n');
619 tell_user(stderr
, "%s\n", rbuf
);
627 int sftp_recvdata(char *buf
, int len
)
629 return ssh_scp_recv((unsigned char *) buf
, len
);
631 int sftp_senddata(char *buf
, int len
)
633 back
->send(backhandle
, buf
, len
);
637 /* ----------------------------------------------------------------------
638 * sftp-based replacement for the hacky `pscp -ls'.
640 static int sftp_ls_compare(const void *av
, const void *bv
)
642 const struct fxp_name
*a
= (const struct fxp_name
*) av
;
643 const struct fxp_name
*b
= (const struct fxp_name
*) bv
;
644 return strcmp(a
->filename
, b
->filename
);
646 void scp_sftp_listdir(char *dirname
)
648 struct fxp_handle
*dirh
;
649 struct fxp_names
*names
;
650 struct fxp_name
*ournames
;
651 struct sftp_packet
*pktin
;
652 struct sftp_request
*req
, *rreq
;
653 int nnames
, namesize
;
657 tell_user(stderr
, "unable to initialise SFTP: %s", fxp_error());
662 printf("Listing directory %s\n", dirname
);
664 sftp_register(req
= fxp_opendir_send(dirname
));
665 rreq
= sftp_find_request(pktin
= sftp_recv());
667 dirh
= fxp_opendir_recv(pktin
, rreq
);
670 printf("Unable to open %s: %s\n", dirname
, fxp_error());
672 nnames
= namesize
= 0;
677 sftp_register(req
= fxp_readdir_send(dirh
));
678 rreq
= sftp_find_request(pktin
= sftp_recv());
680 names
= fxp_readdir_recv(pktin
, rreq
);
683 if (fxp_error_type() == SSH_FX_EOF
)
685 printf("Reading directory %s: %s\n", dirname
, fxp_error());
688 if (names
->nnames
== 0) {
689 fxp_free_names(names
);
693 if (nnames
+ names
->nnames
>= namesize
) {
694 namesize
+= names
->nnames
+ 128;
695 ournames
= sresize(ournames
, namesize
, struct fxp_name
);
698 for (i
= 0; i
< names
->nnames
; i
++)
699 ournames
[nnames
++] = names
->names
[i
];
700 names
->nnames
= 0; /* prevent free_names */
701 fxp_free_names(names
);
703 sftp_register(req
= fxp_close_send(dirh
));
704 rreq
= sftp_find_request(pktin
= sftp_recv());
706 fxp_close_recv(pktin
, rreq
);
709 * Now we have our filenames. Sort them by actual file
710 * name, and then output the longname parts.
712 qsort(ournames
, nnames
, sizeof(*ournames
), sftp_ls_compare
);
717 for (i
= 0; i
< nnames
; i
++)
718 printf("%s\n", ournames
[i
].longname
);
722 /* ----------------------------------------------------------------------
723 * Helper routines that contain the actual SCP protocol elements,
724 * implemented both as SCP1 and SFTP.
727 static struct scp_sftp_dirstack
{
728 struct scp_sftp_dirstack
*next
;
729 struct fxp_name
*names
;
730 int namepos
, namelen
;
733 int matched_something
; /* wildcard match set was non-empty */
734 } *scp_sftp_dirstack_head
;
735 static char *scp_sftp_remotepath
, *scp_sftp_currentname
;
736 static char *scp_sftp_wildcard
;
737 static int scp_sftp_targetisdir
, scp_sftp_donethistarget
;
738 static int scp_sftp_preserve
, scp_sftp_recursive
;
739 static unsigned long scp_sftp_mtime
, scp_sftp_atime
;
740 static int scp_has_times
;
741 static struct fxp_handle
*scp_sftp_filehandle
;
742 static struct fxp_xfer
*scp_sftp_xfer
;
743 static uint64 scp_sftp_fileoffset
;
745 int scp_source_setup(char *target
, int shouldbedir
)
749 * Find out whether the target filespec is in fact a
752 struct sftp_packet
*pktin
;
753 struct sftp_request
*req
, *rreq
;
754 struct fxp_attrs attrs
;
758 tell_user(stderr
, "unable to initialise SFTP: %s", fxp_error());
763 sftp_register(req
= fxp_stat_send(target
));
764 rreq
= sftp_find_request(pktin
= sftp_recv());
766 ret
= fxp_stat_recv(pktin
, rreq
, &attrs
);
768 if (!ret
|| !(attrs
.flags
& SSH_FILEXFER_ATTR_PERMISSIONS
))
769 scp_sftp_targetisdir
= 0;
771 scp_sftp_targetisdir
= (attrs
.permissions
& 0040000) != 0;
773 if (shouldbedir
&& !scp_sftp_targetisdir
) {
774 bump("pscp: remote filespec %s: not a directory\n", target
);
777 scp_sftp_remotepath
= dupstr(target
);
786 int scp_send_errmsg(char *str
)
789 /* do nothing; we never need to send our errors to the server */
791 back
->send(backhandle
, "\001", 1);/* scp protocol error prefix */
792 back
->send(backhandle
, str
, strlen(str
));
794 return 0; /* can't fail */
797 int scp_send_filetimes(unsigned long mtime
, unsigned long atime
)
800 scp_sftp_mtime
= mtime
;
801 scp_sftp_atime
= atime
;
806 sprintf(buf
, "T%lu 0 %lu 0\n", mtime
, atime
);
807 back
->send(backhandle
, buf
, strlen(buf
));
812 int scp_send_filename(char *name
, uint64 size
, int modes
)
816 struct sftp_packet
*pktin
;
817 struct sftp_request
*req
, *rreq
;
819 if (scp_sftp_targetisdir
) {
820 fullname
= dupcat(scp_sftp_remotepath
, "/", name
, NULL
);
822 fullname
= dupstr(scp_sftp_remotepath
);
825 sftp_register(req
= fxp_open_send(fullname
, SSH_FXF_WRITE
|
826 SSH_FXF_CREAT
| SSH_FXF_TRUNC
));
827 rreq
= sftp_find_request(pktin
= sftp_recv());
829 scp_sftp_filehandle
= fxp_open_recv(pktin
, rreq
);
831 if (!scp_sftp_filehandle
) {
832 tell_user(stderr
, "pscp: unable to open %s: %s",
833 fullname
, fxp_error());
837 scp_sftp_fileoffset
= uint64_make(0, 0);
838 scp_sftp_xfer
= xfer_upload_init(scp_sftp_filehandle
,
839 scp_sftp_fileoffset
);
845 uint64_decimal(size
, sizestr
);
846 sprintf(buf
, "C%04o %s ", modes
, sizestr
);
847 back
->send(backhandle
, buf
, strlen(buf
));
848 back
->send(backhandle
, name
, strlen(name
));
849 back
->send(backhandle
, "\n", 1);
854 int scp_send_filedata(char *data
, int len
)
858 struct sftp_packet
*pktin
;
860 if (!scp_sftp_filehandle
) {
864 while (!xfer_upload_ready(scp_sftp_xfer
)) {
866 ret
= xfer_upload_gotpkt(scp_sftp_xfer
, pktin
);
868 tell_user(stderr
, "error while writing: %s\n", fxp_error());
874 xfer_upload_data(scp_sftp_xfer
, data
, len
);
876 scp_sftp_fileoffset
= uint64_add32(scp_sftp_fileoffset
, len
);
879 int bufsize
= back
->send(backhandle
, data
, len
);
882 * If the network transfer is backing up - that is, the
883 * remote site is not accepting data as fast as we can
884 * produce it - then we must loop on network events until
885 * we have space in the buffer again.
887 while (bufsize
> MAX_SCP_BUFSIZE
) {
888 if (ssh_sftp_loop_iteration() < 0)
890 bufsize
= back
->sendbuffer(backhandle
);
897 int scp_send_finish(void)
900 struct fxp_attrs attrs
;
901 struct sftp_packet
*pktin
;
902 struct sftp_request
*req
, *rreq
;
905 while (!xfer_done(scp_sftp_xfer
)) {
907 xfer_upload_gotpkt(scp_sftp_xfer
, pktin
);
909 xfer_cleanup(scp_sftp_xfer
);
911 if (!scp_sftp_filehandle
) {
915 attrs
.flags
= SSH_FILEXFER_ATTR_ACMODTIME
;
916 attrs
.atime
= scp_sftp_atime
;
917 attrs
.mtime
= scp_sftp_mtime
;
918 sftp_register(req
= fxp_fsetstat_send(scp_sftp_filehandle
, attrs
));
919 rreq
= sftp_find_request(pktin
= sftp_recv());
921 ret
= fxp_fsetstat_recv(pktin
, rreq
);
923 tell_user(stderr
, "unable to set file times: %s\n", fxp_error());
927 sftp_register(req
= fxp_close_send(scp_sftp_filehandle
));
928 rreq
= sftp_find_request(pktin
= sftp_recv());
930 fxp_close_recv(pktin
, rreq
);
934 back
->send(backhandle
, "", 1);
939 char *scp_save_remotepath(void)
942 return scp_sftp_remotepath
;
947 void scp_restore_remotepath(char *data
)
950 scp_sftp_remotepath
= data
;
953 int scp_send_dirname(char *name
, int modes
)
958 struct fxp_attrs attrs
;
959 struct sftp_packet
*pktin
;
960 struct sftp_request
*req
, *rreq
;
963 if (scp_sftp_targetisdir
) {
964 fullname
= dupcat(scp_sftp_remotepath
, "/", name
, NULL
);
966 fullname
= dupstr(scp_sftp_remotepath
);
970 * We don't worry about whether we managed to create the
971 * directory, because if it exists already it's OK just to
972 * use it. Instead, we will stat it afterwards, and if it
973 * exists and is a directory we will assume we were either
974 * successful or it didn't matter.
976 sftp_register(req
= fxp_mkdir_send(fullname
));
977 rreq
= sftp_find_request(pktin
= sftp_recv());
979 ret
= fxp_mkdir_recv(pktin
, rreq
);
984 err
= "server reported no error";
986 sftp_register(req
= fxp_stat_send(fullname
));
987 rreq
= sftp_find_request(pktin
= sftp_recv());
989 ret
= fxp_stat_recv(pktin
, rreq
, &attrs
);
991 if (!ret
|| !(attrs
.flags
& SSH_FILEXFER_ATTR_PERMISSIONS
) ||
992 !(attrs
.permissions
& 0040000)) {
993 tell_user(stderr
, "unable to create directory %s: %s",
999 scp_sftp_remotepath
= fullname
;
1004 sprintf(buf
, "D%04o 0 ", modes
);
1005 back
->send(backhandle
, buf
, strlen(buf
));
1006 back
->send(backhandle
, name
, strlen(name
));
1007 back
->send(backhandle
, "\n", 1);
1012 int scp_send_enddir(void)
1015 sfree(scp_sftp_remotepath
);
1018 back
->send(backhandle
, "E\n", 2);
1024 * Yes, I know; I have an scp_sink_setup _and_ an scp_sink_init.
1025 * That's bad. The difference is that scp_sink_setup is called once
1026 * right at the start, whereas scp_sink_init is called to
1027 * initialise every level of recursion in the protocol.
1029 int scp_sink_setup(char *source
, int preserve
, int recursive
)
1035 tell_user(stderr
, "unable to initialise SFTP: %s", fxp_error());
1040 * It's possible that the source string we've been given
1041 * contains a wildcard. If so, we must split the directory
1042 * away from the wildcard itself (throwing an error if any
1043 * wildcardness comes before the final slash) and arrange
1044 * things so that a dirstack entry will be set up.
1046 newsource
= snewn(1+strlen(source
), char);
1047 if (!wc_unescape(newsource
, source
)) {
1048 /* Yes, here we go; it's a wildcard. Bah. */
1049 char *dupsource
, *lastpart
, *dirpart
, *wildcard
;
1050 dupsource
= dupstr(source
);
1051 lastpart
= stripslashes(dupsource
, 0);
1052 wildcard
= dupstr(lastpart
);
1054 if (*dupsource
&& dupsource
[1]) {
1056 * The remains of dupsource are at least two
1057 * characters long, meaning the pathname wasn't
1058 * empty or just `/'. Hence, we remove the trailing
1061 lastpart
[-1] = '\0';
1062 } else if (!*dupsource
) {
1064 * The remains of dupsource are _empty_ - the whole
1065 * pathname was a wildcard. Hence we need to
1066 * replace it with ".".
1069 dupsource
= dupstr(".");
1073 * Now we have separated our string into dupsource (the
1074 * directory part) and wildcard. Both of these will
1075 * need freeing at some point. Next step is to remove
1076 * wildcard escapes from the directory part, throwing
1077 * an error if it contains a real wildcard.
1079 dirpart
= snewn(1+strlen(dupsource
), char);
1080 if (!wc_unescape(dirpart
, dupsource
)) {
1081 tell_user(stderr
, "%s: multiple-level wildcards unsupported",
1091 * Now we have dirpart (unescaped, ie a valid remote
1092 * path), and wildcard (a wildcard). This will be
1093 * sufficient to arrange a dirstack entry.
1095 scp_sftp_remotepath
= dirpart
;
1096 scp_sftp_wildcard
= wildcard
;
1099 scp_sftp_remotepath
= newsource
;
1100 scp_sftp_wildcard
= NULL
;
1102 scp_sftp_preserve
= preserve
;
1103 scp_sftp_recursive
= recursive
;
1104 scp_sftp_donethistarget
= 0;
1105 scp_sftp_dirstack_head
= NULL
;
1110 int scp_sink_init(void)
1113 back
->send(backhandle
, "", 1);
1118 #define SCP_SINK_FILE 1
1119 #define SCP_SINK_DIR 2
1120 #define SCP_SINK_ENDDIR 3
1121 #define SCP_SINK_RETRY 4 /* not an action; just try again */
1122 struct scp_sink_action
{
1123 int action
; /* FILE, DIR, ENDDIR */
1124 char *buf
; /* will need freeing after use */
1125 char *name
; /* filename or dirname (not ENDDIR) */
1126 int mode
; /* access mode (not ENDDIR) */
1127 uint64 size
; /* file size (not ENDDIR) */
1128 int settime
; /* 1 if atime and mtime are filled */
1129 unsigned long atime
, mtime
; /* access times for the file */
1132 int scp_get_sink_action(struct scp_sink_action
*act
)
1136 int must_free_fname
;
1137 struct fxp_attrs attrs
;
1138 struct sftp_packet
*pktin
;
1139 struct sftp_request
*req
, *rreq
;
1142 if (!scp_sftp_dirstack_head
) {
1143 if (!scp_sftp_donethistarget
) {
1145 * Simple case: we are only dealing with one file.
1147 fname
= scp_sftp_remotepath
;
1148 must_free_fname
= 0;
1149 scp_sftp_donethistarget
= 1;
1152 * Even simpler case: one file _which we've done_.
1153 * Return 1 (finished).
1159 * We're now in the middle of stepping through a list
1160 * of names returned from fxp_readdir(); so let's carry
1163 struct scp_sftp_dirstack
*head
= scp_sftp_dirstack_head
;
1164 while (head
->namepos
< head
->namelen
&&
1165 (is_dots(head
->names
[head
->namepos
].filename
) ||
1167 !wc_match(head
->wildcard
,
1168 head
->names
[head
->namepos
].filename
))))
1169 head
->namepos
++; /* skip . and .. */
1170 if (head
->namepos
< head
->namelen
) {
1171 head
->matched_something
= 1;
1172 fname
= dupcat(head
->dirpath
, "/",
1173 head
->names
[head
->namepos
++].filename
,
1175 must_free_fname
= 1;
1178 * We've come to the end of the list; pop it off
1179 * the stack and return an ENDDIR action (or RETRY
1180 * if this was a wildcard match).
1182 if (head
->wildcard
) {
1183 act
->action
= SCP_SINK_RETRY
;
1184 if (!head
->matched_something
) {
1185 tell_user(stderr
, "pscp: wildcard '%s' matched "
1186 "no files", head
->wildcard
);
1189 sfree(head
->wildcard
);
1192 act
->action
= SCP_SINK_ENDDIR
;
1195 sfree(head
->dirpath
);
1197 scp_sftp_dirstack_head
= head
->next
;
1205 * Now we have a filename. Stat it, and see if it's a file
1208 sftp_register(req
= fxp_stat_send(fname
));
1209 rreq
= sftp_find_request(pktin
= sftp_recv());
1210 assert(rreq
== req
);
1211 ret
= fxp_stat_recv(pktin
, rreq
, &attrs
);
1213 if (!ret
|| !(attrs
.flags
& SSH_FILEXFER_ATTR_PERMISSIONS
)) {
1214 tell_user(stderr
, "unable to identify %s: %s", fname
,
1215 ret ?
"file type not supplied" : fxp_error());
1220 if (attrs
.permissions
& 0040000) {
1221 struct scp_sftp_dirstack
*newitem
;
1222 struct fxp_handle
*dirhandle
;
1223 int nnames
, namesize
;
1224 struct fxp_name
*ournames
;
1225 struct fxp_names
*names
;
1228 * It's a directory. If we're not in recursive mode,
1229 * this merits a complaint (which is fatal if the name
1230 * was specified directly, but not if it was matched by
1233 * We skip this complaint completely if
1234 * scp_sftp_wildcard is set, because that's an
1235 * indication that we're not actually supposed to
1236 * _recursively_ transfer the dir, just scan it for
1237 * things matching the wildcard.
1239 if (!scp_sftp_recursive
&& !scp_sftp_wildcard
) {
1240 tell_user(stderr
, "pscp: %s: is a directory", fname
);
1242 if (must_free_fname
) sfree(fname
);
1243 if (scp_sftp_dirstack_head
) {
1244 act
->action
= SCP_SINK_RETRY
;
1252 * Otherwise, the fun begins. We must fxp_opendir() the
1253 * directory, slurp the filenames into memory, return
1254 * SCP_SINK_DIR (unless this is a wildcard match), and
1255 * set targetisdir. The next time we're called, we will
1256 * run through the list of filenames one by one,
1257 * matching them against a wildcard if present.
1259 * If targetisdir is _already_ set (meaning we're
1260 * already in the middle of going through another such
1261 * list), we must push the other (target,namelist) pair
1264 sftp_register(req
= fxp_opendir_send(fname
));
1265 rreq
= sftp_find_request(pktin
= sftp_recv());
1266 assert(rreq
== req
);
1267 dirhandle
= fxp_opendir_recv(pktin
, rreq
);
1270 tell_user(stderr
, "scp: unable to open directory %s: %s",
1271 fname
, fxp_error());
1272 if (must_free_fname
) sfree(fname
);
1276 nnames
= namesize
= 0;
1281 sftp_register(req
= fxp_readdir_send(dirhandle
));
1282 rreq
= sftp_find_request(pktin
= sftp_recv());
1283 assert(rreq
== req
);
1284 names
= fxp_readdir_recv(pktin
, rreq
);
1286 if (names
== NULL
) {
1287 if (fxp_error_type() == SSH_FX_EOF
)
1289 tell_user(stderr
, "scp: reading directory %s: %s\n",
1290 fname
, fxp_error());
1291 if (must_free_fname
) sfree(fname
);
1296 if (names
->nnames
== 0) {
1297 fxp_free_names(names
);
1300 if (nnames
+ names
->nnames
>= namesize
) {
1301 namesize
+= names
->nnames
+ 128;
1302 ournames
= sresize(ournames
, namesize
, struct fxp_name
);
1304 for (i
= 0; i
< names
->nnames
; i
++) {
1305 if (!strcmp(names
->names
[i
].filename
, ".") ||
1306 !strcmp(names
->names
[i
].filename
, "..")) {
1308 * . and .. are normal consequences of
1309 * reading a directory, and aren't worth
1310 * complaining about.
1312 } else if (!vet_filename(names
->names
[i
].filename
)) {
1313 tell_user(stderr
, "ignoring potentially dangerous server-"
1314 "supplied filename '%s'\n",
1315 names
->names
[i
].filename
);
1317 ournames
[nnames
++] = names
->names
[i
];
1319 names
->nnames
= 0; /* prevent free_names */
1320 fxp_free_names(names
);
1322 sftp_register(req
= fxp_close_send(dirhandle
));
1323 rreq
= sftp_find_request(pktin
= sftp_recv());
1324 assert(rreq
== req
);
1325 fxp_close_recv(pktin
, rreq
);
1327 newitem
= snew(struct scp_sftp_dirstack
);
1328 newitem
->next
= scp_sftp_dirstack_head
;
1329 newitem
->names
= ournames
;
1330 newitem
->namepos
= 0;
1331 newitem
->namelen
= nnames
;
1332 if (must_free_fname
)
1333 newitem
->dirpath
= fname
;
1335 newitem
->dirpath
= dupstr(fname
);
1336 if (scp_sftp_wildcard
) {
1337 newitem
->wildcard
= scp_sftp_wildcard
;
1338 newitem
->matched_something
= 0;
1339 scp_sftp_wildcard
= NULL
;
1341 newitem
->wildcard
= NULL
;
1343 scp_sftp_dirstack_head
= newitem
;
1345 if (newitem
->wildcard
) {
1346 act
->action
= SCP_SINK_RETRY
;
1348 act
->action
= SCP_SINK_DIR
;
1349 act
->buf
= dupstr(stripslashes(fname
, 0));
1350 act
->name
= act
->buf
;
1351 act
->size
= uint64_make(0,0); /* duhh, it's a directory */
1352 act
->mode
= 07777 & attrs
.permissions
;
1353 if (scp_sftp_preserve
&&
1354 (attrs
.flags
& SSH_FILEXFER_ATTR_ACMODTIME
)) {
1355 act
->atime
= attrs
.atime
;
1356 act
->mtime
= attrs
.mtime
;
1365 * It's a file. Return SCP_SINK_FILE.
1367 act
->action
= SCP_SINK_FILE
;
1368 act
->buf
= dupstr(stripslashes(fname
, 0));
1369 act
->name
= act
->buf
;
1370 if (attrs
.flags
& SSH_FILEXFER_ATTR_SIZE
) {
1371 act
->size
= attrs
.size
;
1373 act
->size
= uint64_make(ULONG_MAX
,ULONG_MAX
); /* no idea */
1374 act
->mode
= 07777 & attrs
.permissions
;
1375 if (scp_sftp_preserve
&&
1376 (attrs
.flags
& SSH_FILEXFER_ATTR_ACMODTIME
)) {
1377 act
->atime
= attrs
.atime
;
1378 act
->mtime
= attrs
.mtime
;
1382 if (must_free_fname
)
1383 scp_sftp_currentname
= fname
;
1385 scp_sftp_currentname
= dupstr(fname
);
1400 if (ssh_scp_recv((unsigned char *) &ch
, 1) <= 0)
1403 bump("Protocol error: Unexpected newline");
1407 if (ssh_scp_recv((unsigned char *) &ch
, 1) <= 0)
1408 bump("Lost connection");
1411 act
->buf
= sresize(act
->buf
, bufsize
, char);
1414 } while (ch
!= '\n');
1415 act
->buf
[i
- 1] = '\0';
1417 case '\01': /* error */
1418 tell_user(stderr
, "%s\n", act
->buf
);
1420 continue; /* go round again */
1421 case '\02': /* fatal error */
1422 bump("%s", act
->buf
);
1424 back
->send(backhandle
, "", 1);
1425 act
->action
= SCP_SINK_ENDDIR
;
1428 if (sscanf(act
->buf
, "%ld %*d %ld %*d",
1429 &act
->mtime
, &act
->atime
) == 2) {
1431 back
->send(backhandle
, "", 1);
1432 continue; /* go round again */
1434 bump("Protocol error: Illegal time format");
1437 act
->action
= (action
== 'C' ? SCP_SINK_FILE
: SCP_SINK_DIR
);
1440 bump("Protocol error: Expected control record");
1443 * We will go round this loop only once, unless we hit
1450 * If we get here, we must have seen SCP_SINK_FILE or
1456 if (sscanf(act
->buf
, "%o %s %n", &act
->mode
, sizestr
, &i
) != 2)
1457 bump("Protocol error: Illegal file descriptor format");
1458 act
->size
= uint64_from_decimal(sizestr
);
1459 act
->name
= act
->buf
+ i
;
1465 int scp_accept_filexfer(void)
1468 struct sftp_packet
*pktin
;
1469 struct sftp_request
*req
, *rreq
;
1471 sftp_register(req
= fxp_open_send(scp_sftp_currentname
, SSH_FXF_READ
));
1472 rreq
= sftp_find_request(pktin
= sftp_recv());
1473 assert(rreq
== req
);
1474 scp_sftp_filehandle
= fxp_open_recv(pktin
, rreq
);
1476 if (!scp_sftp_filehandle
) {
1477 tell_user(stderr
, "pscp: unable to open %s: %s",
1478 scp_sftp_currentname
, fxp_error());
1482 scp_sftp_fileoffset
= uint64_make(0, 0);
1483 scp_sftp_xfer
= xfer_download_init(scp_sftp_filehandle
,
1484 scp_sftp_fileoffset
);
1485 sfree(scp_sftp_currentname
);
1488 back
->send(backhandle
, "", 1);
1489 return 0; /* can't fail */
1493 int scp_recv_filedata(char *data
, int len
)
1496 struct sftp_packet
*pktin
;
1500 xfer_download_queue(scp_sftp_xfer
);
1501 pktin
= sftp_recv();
1502 ret
= xfer_download_gotpkt(scp_sftp_xfer
, pktin
);
1505 tell_user(stderr
, "pscp: error while reading: %s", fxp_error());
1510 if (xfer_download_data(scp_sftp_xfer
, &vbuf
, &actuallen
)) {
1512 * This assertion relies on the fact that the natural
1513 * block size used in the xfer manager is at most that
1514 * used in this module. I don't like crossing layers in
1515 * this way, but it'll do for now.
1517 assert(actuallen
<= len
);
1518 memcpy(data
, vbuf
, actuallen
);
1523 scp_sftp_fileoffset
= uint64_add32(scp_sftp_fileoffset
, actuallen
);
1527 return ssh_scp_recv((unsigned char *) data
, len
);
1531 int scp_finish_filerecv(void)
1534 struct sftp_packet
*pktin
;
1535 struct sftp_request
*req
, *rreq
;
1538 * Ensure that xfer_done() will work correctly, so we can
1539 * clean up any outstanding requests from the file
1542 xfer_set_error(scp_sftp_xfer
);
1543 while (!xfer_done(scp_sftp_xfer
)) {
1547 pktin
= sftp_recv();
1548 xfer_download_gotpkt(scp_sftp_xfer
, pktin
);
1549 if (xfer_download_data(scp_sftp_xfer
, &vbuf
, &len
))
1552 xfer_cleanup(scp_sftp_xfer
);
1554 sftp_register(req
= fxp_close_send(scp_sftp_filehandle
));
1555 rreq
= sftp_find_request(pktin
= sftp_recv());
1556 assert(rreq
== req
);
1557 fxp_close_recv(pktin
, rreq
);
1560 back
->send(backhandle
, "", 1);
1565 /* ----------------------------------------------------------------------
1566 * Send an error message to the other side and to the screen.
1567 * Increment error counter.
1569 static void run_err(const char *fmt
, ...)
1575 str
= dupvprintf(fmt
, ap
);
1576 str2
= dupcat("scp: ", str
, "\n", NULL
);
1578 scp_send_errmsg(str2
);
1579 tell_user(stderr
, "%s", str2
);
1585 * Execute the source part of the SCP protocol.
1587 static void source(char *src
)
1590 unsigned long mtime
, atime
;
1596 time_t stat_starttime
, stat_lasttime
;
1598 attr
= file_type(src
);
1599 if (attr
== FILE_TYPE_NONEXISTENT
||
1600 attr
== FILE_TYPE_WEIRD
) {
1601 run_err("%s: %s file or directory", src
,
1602 (attr
== FILE_TYPE_WEIRD ?
"Not a" : "No such"));
1606 if (attr
== FILE_TYPE_DIRECTORY
) {
1609 * Avoid . and .. directories.
1612 p
= strrchr(src
, '/');
1614 p
= strrchr(src
, '\\');
1619 if (!strcmp(p
, ".") || !strcmp(p
, ".."))
1620 /* skip . and .. */ ;
1624 run_err("%s: not a regular file", src
);
1629 if ((last
= strrchr(src
, '/')) == NULL
)
1633 if (strrchr(last
, '\\') != NULL
)
1634 last
= strrchr(last
, '\\') + 1;
1635 if (last
== src
&& strchr(src
, ':') != NULL
)
1636 last
= strchr(src
, ':') + 1;
1638 f
= open_existing_file(src
, &size
, &mtime
, &atime
);
1640 run_err("%s: Cannot open file", src
);
1644 if (scp_send_filetimes(mtime
, atime
))
1650 uint64_decimal(size
, sizestr
);
1651 tell_user(stderr
, "Sending file %s, size=%s", last
, sizestr
);
1653 if (scp_send_filename(last
, size
, 0644))
1656 stat_bytes
= uint64_make(0,0);
1657 stat_starttime
= time(NULL
);
1660 for (i
= uint64_make(0,0);
1661 uint64_compare(i
,size
) < 0;
1662 i
= uint64_add32(i
,4096)) {
1663 char transbuf
[4096];
1666 if (uint64_compare(uint64_add32(i
, k
),size
) > 0) /* i + k > size */
1667 k
= (uint64_subtract(size
, i
)).lo
; /* k = size - i; */
1668 if ((j
= read_from_file(f
, transbuf
, k
)) != k
) {
1671 bump("%s: Read error", src
);
1673 if (scp_send_filedata(transbuf
, k
))
1674 bump("%s: Network error occurred", src
);
1677 stat_bytes
= uint64_add32(stat_bytes
, k
);
1678 if (time(NULL
) != stat_lasttime
||
1679 (uint64_compare(uint64_add32(i
, k
), size
) == 0)) {
1680 stat_lasttime
= time(NULL
);
1681 print_stats(last
, size
, stat_bytes
,
1682 stat_starttime
, stat_lasttime
);
1689 (void) scp_send_finish();
1693 * Recursively send the contents of a directory.
1695 static void rsource(char *src
)
1701 if ((last
= strrchr(src
, '/')) == NULL
)
1705 if (strrchr(last
, '\\') != NULL
)
1706 last
= strrchr(last
, '\\') + 1;
1707 if (last
== src
&& strchr(src
, ':') != NULL
)
1708 last
= strchr(src
, ':') + 1;
1710 /* maybe send filetime */
1712 save_target
= scp_save_remotepath();
1715 tell_user(stderr
, "Entering directory: %s", last
);
1716 if (scp_send_dirname(last
, 0755))
1719 dir
= open_directory(src
);
1722 while ((filename
= read_filename(dir
)) != NULL
) {
1723 char *foundfile
= dupcat(src
, "/", filename
, NULL
);
1729 close_directory(dir
);
1731 (void) scp_send_enddir();
1733 scp_restore_remotepath(save_target
);
1737 * Execute the sink part of the SCP protocol.
1739 static void sink(char *targ
, char *src
)
1749 time_t stat_starttime
, stat_lasttime
;
1752 attr
= file_type(targ
);
1753 if (attr
== FILE_TYPE_DIRECTORY
)
1756 if (targetshouldbedirectory
&& !targisdir
)
1757 bump("%s: Not a directory", targ
);
1761 struct scp_sink_action act
;
1762 if (scp_get_sink_action(&act
))
1765 if (act
.action
== SCP_SINK_ENDDIR
)
1768 if (act
.action
== SCP_SINK_RETRY
)
1773 * Prevent the remote side from maliciously writing to
1774 * files outside the target area by sending a filename
1775 * containing `../'. In fact, it shouldn't be sending
1776 * filenames with any slashes or colons in at all; so
1777 * we'll find the last slash, backslash or colon in the
1778 * filename and use only the part after that. (And
1781 * In addition, we also ensure here that if we're
1782 * copying a single file and the target is a directory
1783 * (common usage: `pscp host:filename .') the remote
1784 * can't send us a _different_ file name. We can
1785 * distinguish this case because `src' will be non-NULL
1786 * and the last component of that will fail to match
1787 * (the last component of) the name sent.
1789 * Well, not always; if `src' is a wildcard, we do
1790 * expect to get back filenames that don't correspond
1791 * exactly to it. Ideally in this case, we would like
1792 * to ensure that the returned filename actually
1793 * matches the wildcard pattern - but one of SCP's
1794 * protocol infelicities is that wildcard matching is
1795 * done at the server end _by the server's rules_ and
1796 * so in general this is infeasible. Hence, we only
1797 * accept filenames that don't correspond to `src' if
1798 * unsafe mode is enabled or we are using SFTP (which
1799 * resolves remote wildcards on the client side and can
1802 char *striptarget
, *stripsrc
;
1804 striptarget
= stripslashes(act
.name
, 1);
1805 if (striptarget
!= act
.name
) {
1806 tell_user(stderr
, "warning: remote host sent a compound"
1807 " pathname '%s'", act
.name
);
1808 tell_user(stderr
, " renaming local file to '%s'",
1813 * Also check to see if the target filename is '.' or
1814 * '..', or indeed '...' and so on because Windows
1815 * appears to interpret those like '..'.
1817 if (is_dots(striptarget
)) {
1818 bump("security violation: remote host attempted to write to"
1819 " a '.' or '..' path!");
1823 stripsrc
= stripslashes(src
, 1);
1824 if (strcmp(striptarget
, stripsrc
) &&
1825 !using_sftp
&& !scp_unsafe_mode
) {
1826 tell_user(stderr
, "warning: remote host tried to write "
1827 "to a file called '%s'", striptarget
);
1828 tell_user(stderr
, " when we requested a file "
1829 "called '%s'.", stripsrc
);
1830 tell_user(stderr
, " If this is a wildcard, "
1831 "consider upgrading to SSH-2 or using");
1832 tell_user(stderr
, " the '-unsafe' option. Renaming"
1833 " of this file has been disallowed.");
1834 /* Override the name the server provided with our own. */
1835 striptarget
= stripsrc
;
1839 if (targ
[0] != '\0')
1840 destfname
= dir_file_cat(targ
, striptarget
);
1842 destfname
= dupstr(striptarget
);
1845 * In this branch of the if, the target area is a
1846 * single file with an explicitly specified name in any
1847 * case, so there's no danger.
1849 destfname
= dupstr(targ
);
1851 attr
= file_type(destfname
);
1852 exists
= (attr
!= FILE_TYPE_NONEXISTENT
);
1854 if (act
.action
== SCP_SINK_DIR
) {
1855 if (exists
&& attr
!= FILE_TYPE_DIRECTORY
) {
1856 run_err("%s: Not a directory", destfname
);
1860 if (!create_directory(destfname
)) {
1861 run_err("%s: Cannot create directory", destfname
);
1865 sink(destfname
, NULL
);
1866 /* can we set the timestamp for directories ? */
1870 f
= open_new_file(destfname
);
1872 run_err("%s: Cannot create file", destfname
);
1876 if (scp_accept_filexfer())
1879 stat_bytes
= uint64_make(0, 0);
1880 stat_starttime
= time(NULL
);
1882 stat_name
= stripslashes(destfname
, 1);
1884 received
= uint64_make(0, 0);
1885 while (uint64_compare(received
,act
.size
) < 0) {
1886 char transbuf
[32768];
1889 blksize
= uint64_make(0, 32768);
1890 if (uint64_compare(blksize
,uint64_subtract(act
.size
,received
)) > 0)
1891 blksize
= uint64_subtract(act
.size
,received
);
1892 read
= scp_recv_filedata(transbuf
, (int)blksize
.lo
);
1894 bump("Lost connection");
1897 if (write_to_file(f
, transbuf
, read
) != (int)read
) {
1899 /* FIXME: in sftp we can actually abort the transfer */
1901 printf("\r%-25.25s | %50s\n",
1903 "Write error.. waiting for end of file");
1907 stat_bytes
= uint64_add32(stat_bytes
,read
);
1908 if (time(NULL
) > stat_lasttime
||
1909 uint64_compare(uint64_add32(received
, read
), act
.size
) == 0) {
1910 stat_lasttime
= time(NULL
);
1911 print_stats(stat_name
, act
.size
, stat_bytes
,
1912 stat_starttime
, stat_lasttime
);
1915 received
= uint64_add32(received
, read
);
1918 set_file_times(f
, act
.mtime
, act
.atime
);
1923 run_err("%s: Write error", destfname
);
1926 (void) scp_finish_filerecv();
1933 * We will copy local files to a remote server.
1935 static void toremote(int argc
, char *argv
[])
1937 char *src
, *targ
, *host
, *user
;
1941 targ
= argv
[argc
- 1];
1943 /* Separate host from filename */
1947 bump("targ == NULL in toremote()");
1951 /* Substitute "." for empty target */
1953 /* Separate host and username */
1955 host
= strrchr(host
, '@');
1966 if (colon(argv
[0]) != NULL
)
1967 bump("%s: Remote to remote not supported", argv
[0]);
1969 wc_type
= test_wildcard(argv
[0], 1);
1970 if (wc_type
== WCTYPE_NONEXISTENT
)
1971 bump("%s: No such file or directory\n", argv
[0]);
1972 else if (wc_type
== WCTYPE_WILDCARD
)
1973 targetshouldbedirectory
= 1;
1976 cmd
= dupprintf("scp%s%s%s%s -t %s",
1977 verbose ?
" -v" : "",
1978 recursive ?
" -r" : "",
1979 preserve ?
" -p" : "",
1980 targetshouldbedirectory ?
" -d" : "", targ
);
1981 do_cmd(host
, user
, cmd
);
1984 if (scp_source_setup(targ
, targetshouldbedirectory
))
1987 for (i
= 0; i
< argc
- 1; i
++) {
1989 if (colon(src
) != NULL
) {
1990 tell_user(stderr
, "%s: Remote to remote not supported\n", src
);
1995 wc_type
= test_wildcard(src
, 1);
1996 if (wc_type
== WCTYPE_NONEXISTENT
) {
1997 run_err("%s: No such file or directory", src
);
1999 } else if (wc_type
== WCTYPE_FILENAME
) {
2003 WildcardMatcher
*wc
;
2006 wc
= begin_wildcard_matching(src
);
2008 run_err("%s: No such file or directory", src
);
2012 while ((filename
= wildcard_get_filename(wc
)) != NULL
) {
2017 finish_wildcard_matching(wc
);
2023 * We will copy files from a remote server to the local machine.
2025 static void tolocal(int argc
, char *argv
[])
2027 char *src
, *targ
, *host
, *user
;
2031 bump("More than one remote source not supported");
2036 /* Separate host from filename */
2040 bump("Local to local copy not supported");
2044 /* Substitute "." for empty filename */
2046 /* Separate username and hostname */
2048 host
= strrchr(host
, '@');
2058 cmd
= dupprintf("scp%s%s%s%s -f %s",
2059 verbose ?
" -v" : "",
2060 recursive ?
" -r" : "",
2061 preserve ?
" -p" : "",
2062 targetshouldbedirectory ?
" -d" : "", src
);
2063 do_cmd(host
, user
, cmd
);
2066 if (scp_sink_setup(src
, preserve
, recursive
))
2073 * We will issue a list command to get a remote directory.
2075 static void get_dir_list(int argc
, char *argv
[])
2077 char *src
, *host
, *user
;
2083 /* Separate host from filename */
2087 bump("Local to local copy not supported");
2091 /* Substitute "." for empty filename */
2093 /* Separate username and hostname */
2095 host
= strrchr(host
, '@');
2105 cmd
= snewn(4 * strlen(src
) + 100, char);
2106 strcpy(cmd
, "ls -la '");
2107 p
= cmd
+ strlen(cmd
);
2108 for (q
= src
; *q
; q
++) {
2121 do_cmd(host
, user
, cmd
);
2125 scp_sftp_listdir(src
);
2127 while (ssh_scp_recv((unsigned char *) &c
, 1) > 0)
2128 tell_char(stdout
, c
);
2133 * Short description of parameters.
2135 static void usage(void)
2137 printf("PuTTY Secure Copy client\n");
2138 printf("%s\n", ver
);
2139 printf("Usage: pscp [options] [user@]host:source target\n");
2141 (" pscp [options] source [source...] [user@]host:target\n");
2142 printf(" pscp [options] -ls [user@]host:filespec\n");
2143 printf("Options:\n");
2144 printf(" -V print version information and exit\n");
2145 printf(" -pgpfp print PGP key fingerprints and exit\n");
2146 printf(" -p preserve file attributes\n");
2147 printf(" -q quiet, don't show statistics\n");
2148 printf(" -r copy directories recursively\n");
2149 printf(" -v show verbose messages\n");
2150 printf(" -load sessname Load settings from saved session\n");
2151 printf(" -P port connect to specified port\n");
2152 printf(" -l user connect with specified username\n");
2153 printf(" -pw passw login with specified password\n");
2154 printf(" -1 -2 force use of particular SSH protocol version\n");
2155 printf(" -4 -6 force use of IPv4 or IPv6\n");
2156 printf(" -C enable compression\n");
2157 printf(" -i key private key file for authentication\n");
2158 printf(" -noagent disable use of Pageant\n");
2159 printf(" -agent enable use of Pageant\n");
2160 printf(" -batch disable all interactive prompts\n");
2161 printf(" -unsafe allow server-side wildcards (DANGEROUS)\n");
2162 printf(" -sftp force use of SFTP protocol\n");
2163 printf(" -scp force use of SCP protocol\n");
2166 * -gui is an internal option, used by GUI front ends to get
2167 * pscp to pass progress reports back to them. It's not an
2168 * ordinary user-accessible option, so it shouldn't be part of
2169 * the command-line help. The only people who need to know
2170 * about it are programmers, and they can read the source.
2173 (" -gui hWnd GUI mode with the windows handle for receiving messages\n");
2180 printf("pscp: %s\n", ver
);
2184 void cmdline_error(char *p
, ...)
2187 fprintf(stderr
, "pscp: ");
2189 vfprintf(stderr
, p
, ap
);
2191 fprintf(stderr
, "\n try typing just \"pscp\" for help\n");
2196 * Main program. (Called `psftp_main' because it gets called from
2197 * *sftp.c; bit silly, I know, but it had to be called _something_.)
2199 int psftp_main(int argc
, char *argv
[])
2203 default_protocol
= PROT_TELNET
;
2206 #ifdef FLAG_SYNCAGENT
2210 cmdline_tooltype
= TOOLTYPE_FILETRANSFER
;
2213 /* Load Default Settings before doing anything else. */
2214 do_defaults(NULL
, &cfg
);
2215 loaded_session
= FALSE
;
2217 for (i
= 1; i
< argc
; i
++) {
2219 if (argv
[i
][0] != '-')
2221 ret
= cmdline_process_param(argv
[i
], i
+1<argc?argv
[i
+1]:NULL
, 1, &cfg
);
2223 cmdline_error("option \"%s\" requires an argument", argv
[i
]);
2224 } else if (ret
== 2) {
2225 i
++; /* skip next argument */
2226 } else if (ret
== 1) {
2227 /* We have our own verbosity in addition to `flags'. */
2228 if (flags
& FLAG_VERBOSE
)
2230 } else if (strcmp(argv
[i
], "-pgpfp") == 0) {
2233 } else if (strcmp(argv
[i
], "-r") == 0) {
2235 } else if (strcmp(argv
[i
], "-p") == 0) {
2237 } else if (strcmp(argv
[i
], "-q") == 0) {
2239 } else if (strcmp(argv
[i
], "-h") == 0 || strcmp(argv
[i
], "-?") == 0) {
2241 } else if (strcmp(argv
[i
], "-V") == 0) {
2243 } else if (strcmp(argv
[i
], "-ls") == 0) {
2245 } else if (strcmp(argv
[i
], "-batch") == 0) {
2246 console_batch_mode
= 1;
2247 } else if (strcmp(argv
[i
], "-unsafe") == 0) {
2248 scp_unsafe_mode
= 1;
2249 } else if (strcmp(argv
[i
], "-sftp") == 0) {
2250 try_scp
= 0; try_sftp
= 1;
2251 } else if (strcmp(argv
[i
], "-scp") == 0) {
2252 try_scp
= 1; try_sftp
= 0;
2253 } else if (strcmp(argv
[i
], "--") == 0) {
2257 cmdline_error("unknown option \"%s\"", argv
[i
]);
2267 get_dir_list(argc
, argv
);
2274 targetshouldbedirectory
= 1;
2276 if (colon(argv
[argc
- 1]) != NULL
)
2277 toremote(argc
, argv
);
2279 tolocal(argc
, argv
);
2282 if (back
!= NULL
&& back
->connected(backhandle
)) {
2284 back
->special(backhandle
, TS_EOF
);
2285 ssh_scp_recv((unsigned char *) &ch
, 1);
2290 console_provide_logctx(NULL
);
2291 back
->free(backhandle
);
2295 return (errs
== 0 ?
0 : 1);