2 * psftp.c: (platform-independent) front end for PSFTP.
11 #define PUTTY_DO_GLOBALS
19 const char *const appname
= "PSFTP";
22 * Since SFTP is a request-response oriented protocol, it requires
23 * no buffer management: when we send data, we stop and wait for an
24 * acknowledgement _anyway_, and so we can't possibly overfill our
28 static int psftp_connect(char *userhost
, char *user
, int portnumber
);
29 static int do_sftp_init(void);
30 void do_sftp_cleanup();
32 /* ----------------------------------------------------------------------
38 static void *backhandle
;
42 /* ----------------------------------------------------------------------
43 * Manage sending requests and waiting for replies.
45 struct sftp_packet
*sftp_wait_for_reply(struct sftp_request
*req
)
47 struct sftp_packet
*pktin
;
48 struct sftp_request
*rreq
;
53 connection_fatal(NULL
, "did not receive SFTP response packet "
55 rreq
= sftp_find_request(pktin
);
57 connection_fatal(NULL
, "unable to understand SFTP response packet "
58 "from server: %s", fxp_error());
62 /* ----------------------------------------------------------------------
63 * Higher-level helper functions used in commands.
67 * Attempt to canonify a pathname starting from the pwd. If
68 * canonification fails, at least fall back to returning a _valid_
69 * pathname (though it may be ugly, eg /home/simon/../foobar).
71 char *canonify(char *name
)
73 char *fullname
, *canonname
;
74 struct sftp_packet
*pktin
;
75 struct sftp_request
*req
;
78 fullname
= dupstr(name
);
81 if (pwd
[strlen(pwd
) - 1] == '/')
85 fullname
= dupcat(pwd
, slash
, name
, NULL
);
88 req
= fxp_realpath_send(fullname
);
89 pktin
= sftp_wait_for_reply(req
);
90 canonname
= fxp_realpath_recv(pktin
, req
);
97 * Attempt number 2. Some FXP_REALPATH implementations
98 * (glibc-based ones, in particular) require the _whole_
99 * path to point to something that exists, whereas others
100 * (BSD-based) only require all but the last component to
101 * exist. So if the first call failed, we should strip off
102 * everything from the last slash onwards and try again,
103 * then put the final component back on.
107 * - if the last component is "/." or "/..", then we don't
108 * bother trying this because there's no way it can work.
110 * - if the thing actually ends with a "/", we remove it
111 * before we start. Except if the string is "/" itself
112 * (although I can't see why we'd have got here if so,
113 * because surely "/" would have worked the first
114 * time?), in which case we don't bother.
116 * - if there's no slash in the string at all, give up in
117 * confusion (we expect at least one because of the way
118 * we constructed the string).
124 i
= strlen(fullname
);
125 if (i
> 2 && fullname
[i
- 1] == '/')
126 fullname
[--i
] = '\0'; /* strip trailing / unless at pos 0 */
127 while (i
> 0 && fullname
[--i
] != '/');
130 * Give up on special cases.
132 if (fullname
[i
] != '/' || /* no slash at all */
133 !strcmp(fullname
+ i
, "/.") || /* ends in /. */
134 !strcmp(fullname
+ i
, "/..") || /* ends in /.. */
135 !strcmp(fullname
, "/")) {
140 * Now i points at the slash. Deal with the final special
141 * case i==0 (ie the whole path was "/nonexistentfile").
143 fullname
[i
] = '\0'; /* separate the string */
145 req
= fxp_realpath_send("/");
147 req
= fxp_realpath_send(fullname
);
149 pktin
= sftp_wait_for_reply(req
);
150 canonname
= fxp_realpath_recv(pktin
, req
);
153 /* Even that failed. Restore our best guess at the
154 * constructed filename and give up */
155 fullname
[i
] = '/'; /* restore slash and last component */
160 * We have a canonical name for all but the last path
161 * component. Concatenate the last component and return.
163 returnname
= dupcat(canonname
,
164 canonname
[strlen(canonname
) - 1] ==
165 '/' ?
"" : "/", fullname
+ i
+ 1, NULL
);
173 * Return a pointer to the portion of str that comes after the last
174 * slash (or backslash or colon, if `local' is TRUE).
176 static char *stripslashes(char *str
, int local
)
181 p
= strchr(str
, ':');
185 p
= strrchr(str
, '/');
189 p
= strrchr(str
, '\\');
197 * qsort comparison routine for fxp_name structures. Sorts by real
200 static int sftp_name_compare(const void *av
, const void *bv
)
202 const struct fxp_name
*const *a
= (const struct fxp_name
*const *) av
;
203 const struct fxp_name
*const *b
= (const struct fxp_name
*const *) bv
;
204 return strcmp((*a
)->filename
, (*b
)->filename
);
208 * Likewise, but for a bare char *.
210 static int bare_name_compare(const void *av
, const void *bv
)
212 const char **a
= (const char **) av
;
213 const char **b
= (const char **) bv
;
214 return strcmp(*a
, *b
);
217 static void not_connected(void)
219 printf("psftp: not connected to a host; use \"open host.name\"\n");
222 /* ----------------------------------------------------------------------
223 * The meat of the `get' and `put' commands.
225 int sftp_get_file(char *fname
, char *outfname
, int recurse
, int restart
)
227 struct fxp_handle
*fh
;
228 struct sftp_packet
*pktin
;
229 struct sftp_request
*req
;
230 struct fxp_xfer
*xfer
;
233 int ret
, shown_err
= FALSE
;
234 struct fxp_attrs attrs
;
237 * In recursive mode, see if we're dealing with a directory.
238 * (If we're not in recursive mode, we need not even check: the
239 * subsequent FXP_OPEN will return a usable error message.)
244 req
= fxp_stat_send(fname
);
245 pktin
= sftp_wait_for_reply(req
);
246 result
= fxp_stat_recv(pktin
, req
, &attrs
);
249 (attrs
.flags
& SSH_FILEXFER_ATTR_PERMISSIONS
) &&
250 (attrs
.permissions
& 0040000)) {
252 struct fxp_handle
*dirhandle
;
253 int nnames
, namesize
;
254 struct fxp_name
**ournames
;
255 struct fxp_names
*names
;
259 * First, attempt to create the destination directory,
260 * unless it already exists.
262 if (file_type(outfname
) != FILE_TYPE_DIRECTORY
&&
263 !create_directory(outfname
)) {
264 printf("%s: Cannot create directory\n", outfname
);
269 * Now get the list of filenames in the remote
272 req
= fxp_opendir_send(fname
);
273 pktin
= sftp_wait_for_reply(req
);
274 dirhandle
= fxp_opendir_recv(pktin
, req
);
277 printf("%s: unable to open directory: %s\n",
281 nnames
= namesize
= 0;
286 req
= fxp_readdir_send(dirhandle
);
287 pktin
= sftp_wait_for_reply(req
);
288 names
= fxp_readdir_recv(pktin
, req
);
291 if (fxp_error_type() == SSH_FX_EOF
)
293 printf("%s: reading directory: %s\n", fname
, fxp_error());
295 req
= fxp_close_send(dirhandle
);
296 pktin
= sftp_wait_for_reply(req
);
297 fxp_close_recv(pktin
, req
);
302 if (names
->nnames
== 0) {
303 fxp_free_names(names
);
306 if (nnames
+ names
->nnames
>= namesize
) {
307 namesize
+= names
->nnames
+ 128;
308 ournames
= sresize(ournames
, namesize
, struct fxp_name
*);
310 for (i
= 0; i
< names
->nnames
; i
++)
311 if (strcmp(names
->names
[i
].filename
, ".") &&
312 strcmp(names
->names
[i
].filename
, "..")) {
313 if (!vet_filename(names
->names
[i
].filename
)) {
314 printf("ignoring potentially dangerous server-"
315 "supplied filename '%s'\n",
316 names
->names
[i
].filename
);
319 fxp_dup_name(&names
->names
[i
]);
322 fxp_free_names(names
);
324 req
= fxp_close_send(dirhandle
);
325 pktin
= sftp_wait_for_reply(req
);
326 fxp_close_recv(pktin
, req
);
329 * Sort the names into a clear order. This ought to
330 * make things more predictable when we're doing a
331 * reget of the same directory, just in case two
332 * readdirs on the same remote directory return a
336 qsort(ournames
, nnames
, sizeof(*ournames
), sftp_name_compare
);
339 * If we're in restart mode, find the last filename on
340 * this list that already exists. We may have to do a
341 * reget on _that_ file, but shouldn't have to do
342 * anything on the previous files.
344 * If none of them exists, of course, we start at 0.
351 nextoutfname
= dir_file_cat(outfname
,
352 ournames
[i
]->filename
);
353 ret
= (file_type(nextoutfname
) == FILE_TYPE_NONEXISTENT
);
364 * Now we're ready to recurse. Starting at ournames[i]
365 * and continuing on to the end of the list, we
366 * construct a new source and target file name, and
367 * call sftp_get_file again.
369 for (; i
< nnames
; i
++) {
370 char *nextfname
, *nextoutfname
;
373 nextfname
= dupcat(fname
, "/", ournames
[i
]->filename
, NULL
);
374 nextoutfname
= dir_file_cat(outfname
, ournames
[i
]->filename
);
375 ret
= sftp_get_file(nextfname
, nextoutfname
, recurse
, restart
);
376 restart
= FALSE
; /* after first partial file, do full */
380 for (i
= 0; i
< nnames
; i
++) {
381 fxp_free_name(ournames
[i
]);
389 * Done this recursion level. Free everything.
391 for (i
= 0; i
< nnames
; i
++) {
392 fxp_free_name(ournames
[i
]);
400 req
= fxp_stat_send(fname
);
401 pktin
= sftp_wait_for_reply(req
);
402 if (!fxp_stat_recv(pktin
, req
, &attrs
))
405 req
= fxp_open_send(fname
, SSH_FXF_READ
, NULL
);
406 pktin
= sftp_wait_for_reply(req
);
407 fh
= fxp_open_recv(pktin
, req
);
410 printf("%s: open for read: %s\n", fname
, fxp_error());
415 file
= open_existing_wfile(outfname
, NULL
);
417 file
= open_new_file(outfname
, GET_PERMISSIONS(attrs
));
421 printf("local: unable to open %s\n", outfname
);
423 req
= fxp_close_send(fh
);
424 pktin
= sftp_wait_for_reply(req
);
425 fxp_close_recv(pktin
, req
);
432 if (seek_file(file
, uint64_make(0,0) , FROM_END
) == -1) {
434 printf("reget: cannot restart %s - file too large\n",
436 req
= fxp_close_send(fh
);
437 pktin
= sftp_wait_for_reply(req
);
438 fxp_close_recv(pktin
, req
);
443 offset
= get_file_posn(file
);
444 uint64_decimal(offset
, decbuf
);
445 printf("reget: restarting at file position %s\n", decbuf
);
447 offset
= uint64_make(0, 0);
450 printf("remote:%s => local:%s\n", fname
, outfname
);
453 * FIXME: we can use FXP_FSTAT here to get the file size, and
454 * thus put up a progress bar.
457 xfer
= xfer_download_init(fh
, offset
);
458 while (!xfer_done(xfer
)) {
463 xfer_download_queue(xfer
);
465 ret
= xfer_download_gotpkt(xfer
, pktin
);
468 printf("error while reading: %s\n", fxp_error());
471 if (ret
== INT_MIN
) /* pktin not even freed */
476 while (xfer_download_data(xfer
, &vbuf
, &len
)) {
477 unsigned char *buf
= (unsigned char *)vbuf
;
481 wlen
= write_to_file(file
, buf
+ wpos
, len
- wpos
);
483 printf("error while writing local file\n");
485 xfer_set_error(xfer
);
490 if (wpos
< len
) { /* we had an error */
492 xfer_set_error(xfer
);
503 req
= fxp_close_send(fh
);
504 pktin
= sftp_wait_for_reply(req
);
505 fxp_close_recv(pktin
, req
);
510 int sftp_put_file(char *fname
, char *outfname
, int recurse
, int restart
)
512 struct fxp_handle
*fh
;
513 struct fxp_xfer
*xfer
;
514 struct sftp_packet
*pktin
;
515 struct sftp_request
*req
;
519 struct fxp_attrs attrs
;
523 * In recursive mode, see if we're dealing with a directory.
524 * (If we're not in recursive mode, we need not even check: the
525 * subsequent fopen will return an error message.)
527 if (recurse
&& file_type(fname
) == FILE_TYPE_DIRECTORY
) {
529 int nnames
, namesize
;
530 char *name
, **ournames
;
535 * First, attempt to create the destination directory,
536 * unless it already exists.
538 req
= fxp_stat_send(outfname
);
539 pktin
= sftp_wait_for_reply(req
);
540 result
= fxp_stat_recv(pktin
, req
, &attrs
);
542 !(attrs
.flags
& SSH_FILEXFER_ATTR_PERMISSIONS
) ||
543 !(attrs
.permissions
& 0040000)) {
544 req
= fxp_mkdir_send(outfname
);
545 pktin
= sftp_wait_for_reply(req
);
546 result
= fxp_mkdir_recv(pktin
, req
);
549 printf("%s: create directory: %s\n",
550 outfname
, fxp_error());
556 * Now get the list of filenames in the local directory.
558 nnames
= namesize
= 0;
561 dh
= open_directory(fname
);
563 printf("%s: unable to open directory\n", fname
);
566 while ((name
= read_filename(dh
)) != NULL
) {
567 if (nnames
>= namesize
) {
569 ournames
= sresize(ournames
, namesize
, char *);
571 ournames
[nnames
++] = name
;
576 * Sort the names into a clear order. This ought to make
577 * things more predictable when we're doing a reput of the
578 * same directory, just in case two readdirs on the same
579 * local directory return a different order.
582 qsort(ournames
, nnames
, sizeof(*ournames
), bare_name_compare
);
585 * If we're in restart mode, find the last filename on this
586 * list that already exists. We may have to do a reput on
587 * _that_ file, but shouldn't have to do anything on the
590 * If none of them exists, of course, we start at 0.
596 nextoutfname
= dupcat(outfname
, "/", ournames
[i
], NULL
);
597 req
= fxp_stat_send(nextoutfname
);
598 pktin
= sftp_wait_for_reply(req
);
599 result
= fxp_stat_recv(pktin
, req
, &attrs
);
610 * Now we're ready to recurse. Starting at ournames[i]
611 * and continuing on to the end of the list, we
612 * construct a new source and target file name, and
613 * call sftp_put_file again.
615 for (; i
< nnames
; i
++) {
616 char *nextfname
, *nextoutfname
;
619 nextfname
= dir_file_cat(fname
, ournames
[i
]);
620 nextoutfname
= dupcat(outfname
, "/", ournames
[i
], NULL
);
621 ret
= sftp_put_file(nextfname
, nextoutfname
, recurse
, restart
);
622 restart
= FALSE
; /* after first partial file, do full */
626 for (i
= 0; i
< nnames
; i
++) {
635 * Done this recursion level. Free everything.
637 for (i
= 0; i
< nnames
; i
++) {
645 file
= open_existing_file(fname
, NULL
, NULL
, NULL
, &permissions
);
647 printf("local: unable to open %s\n", fname
);
651 PUT_PERMISSIONS(attrs
, permissions
);
653 req
= fxp_open_send(outfname
, SSH_FXF_WRITE
, &attrs
);
655 req
= fxp_open_send(outfname
,
656 SSH_FXF_WRITE
| SSH_FXF_CREAT
| SSH_FXF_TRUNC
,
659 pktin
= sftp_wait_for_reply(req
);
660 fh
= fxp_open_recv(pktin
, req
);
664 printf("%s: open for write: %s\n", outfname
, fxp_error());
670 struct fxp_attrs attrs
;
673 req
= fxp_fstat_send(fh
);
674 pktin
= sftp_wait_for_reply(req
);
675 ret
= fxp_fstat_recv(pktin
, req
, &attrs
);
679 printf("read size of %s: %s\n", outfname
, fxp_error());
682 if (!(attrs
.flags
& SSH_FILEXFER_ATTR_SIZE
)) {
684 printf("read size of %s: size was not given\n", outfname
);
688 uint64_decimal(offset
, decbuf
);
689 printf("reput: restarting at file position %s\n", decbuf
);
691 if (seek_file((WFile
*)file
, offset
, FROM_START
) != 0)
692 seek_file((WFile
*)file
, uint64_make(0,0), FROM_END
); /* *shrug* */
694 offset
= uint64_make(0, 0);
697 printf("local:%s => remote:%s\n", fname
, outfname
);
700 * FIXME: we can use FXP_FSTAT here to get the file size, and
701 * thus put up a progress bar.
704 xfer
= xfer_upload_init(fh
, offset
);
706 while ((!err
&& !eof
) || !xfer_done(xfer
)) {
710 while (xfer_upload_ready(xfer
) && !err
&& !eof
) {
711 len
= read_from_file(file
, buffer
, sizeof(buffer
));
713 printf("error while reading local file\n");
715 } else if (len
== 0) {
718 xfer_upload_data(xfer
, buffer
, len
);
722 if (!xfer_done(xfer
)) {
724 ret
= xfer_upload_gotpkt(xfer
, pktin
);
726 if (ret
== INT_MIN
) /* pktin not even freed */
729 printf("error while writing: %s\n", fxp_error());
738 req
= fxp_close_send(fh
);
739 pktin
= sftp_wait_for_reply(req
);
740 fxp_close_recv(pktin
, req
);
747 /* ----------------------------------------------------------------------
748 * A remote wildcard matcher, providing a similar interface to the
749 * local one in psftp.h.
752 typedef struct SftpWildcardMatcher
{
753 struct fxp_handle
*dirh
;
754 struct fxp_names
*names
;
756 char *wildcard
, *prefix
;
757 } SftpWildcardMatcher
;
759 SftpWildcardMatcher
*sftp_begin_wildcard_matching(char *name
)
761 struct sftp_packet
*pktin
;
762 struct sftp_request
*req
;
764 char *unwcdir
, *tmpdir
, *cdir
;
766 SftpWildcardMatcher
*swcm
;
767 struct fxp_handle
*dirh
;
770 * We don't handle multi-level wildcards; so we expect to find
771 * a fully specified directory part, followed by a wildcard
774 wildcard
= stripslashes(name
, 0);
776 unwcdir
= dupstr(name
);
777 len
= wildcard
- name
;
779 if (len
> 0 && unwcdir
[len
-1] == '/')
780 unwcdir
[len
-1] = '\0';
781 tmpdir
= snewn(1 + len
, char);
782 check
= wc_unescape(tmpdir
, unwcdir
);
786 printf("Multiple-level wildcards are not supported\n");
791 cdir
= canonify(unwcdir
);
793 req
= fxp_opendir_send(cdir
);
794 pktin
= sftp_wait_for_reply(req
);
795 dirh
= fxp_opendir_recv(pktin
, req
);
798 swcm
= snew(SftpWildcardMatcher
);
801 swcm
->wildcard
= dupstr(wildcard
);
802 swcm
->prefix
= unwcdir
;
804 printf("Unable to open %s: %s\n", cdir
, fxp_error());
814 char *sftp_wildcard_get_filename(SftpWildcardMatcher
*swcm
)
816 struct fxp_name
*name
;
817 struct sftp_packet
*pktin
;
818 struct sftp_request
*req
;
821 if (swcm
->names
&& swcm
->namepos
>= swcm
->names
->nnames
) {
822 fxp_free_names(swcm
->names
);
827 req
= fxp_readdir_send(swcm
->dirh
);
828 pktin
= sftp_wait_for_reply(req
);
829 swcm
->names
= fxp_readdir_recv(pktin
, req
);
832 if (fxp_error_type() != SSH_FX_EOF
)
833 printf("%s: reading directory: %s\n", swcm
->prefix
,
836 } else if (swcm
->names
->nnames
== 0) {
838 * Another failure mode which we treat as EOF is if
839 * the server reports success from FXP_READDIR but
840 * returns no actual names. This is unusual, since
841 * from most servers you'd expect at least "." and
842 * "..", but there's nothing forbidding a server from
843 * omitting those if it wants to.
851 assert(swcm
->names
&& swcm
->namepos
< swcm
->names
->nnames
);
853 name
= &swcm
->names
->names
[swcm
->namepos
++];
855 if (!strcmp(name
->filename
, ".") || !strcmp(name
->filename
, ".."))
856 continue; /* expected bad filenames */
858 if (!vet_filename(name
->filename
)) {
859 printf("ignoring potentially dangerous server-"
860 "supplied filename '%s'\n", name
->filename
);
861 continue; /* unexpected bad filename */
864 if (!wc_match(swcm
->wildcard
, name
->filename
))
865 continue; /* doesn't match the wildcard */
868 * We have a working filename. Return it.
870 return dupprintf("%s%s%s", swcm
->prefix
,
872 swcm
->prefix
[strlen(swcm
->prefix
)-1]=='/' ?
878 void sftp_finish_wildcard_matching(SftpWildcardMatcher
*swcm
)
880 struct sftp_packet
*pktin
;
881 struct sftp_request
*req
;
883 req
= fxp_close_send(swcm
->dirh
);
884 pktin
= sftp_wait_for_reply(req
);
885 fxp_close_recv(pktin
, req
);
888 fxp_free_names(swcm
->names
);
891 sfree(swcm
->wildcard
);
897 * General function to match a potential wildcard in a filename
898 * argument and iterate over every matching file. Used in several
899 * PSFTP commands (rmdir, rm, chmod, mv).
901 int wildcard_iterate(char *filename
, int (*func
)(void *, char *), void *ctx
)
903 char *unwcfname
, *newname
, *cname
;
906 unwcfname
= snewn(strlen(filename
)+1, char);
907 is_wc
= !wc_unescape(unwcfname
, filename
);
910 SftpWildcardMatcher
*swcm
= sftp_begin_wildcard_matching(filename
);
919 while ( (newname
= sftp_wildcard_get_filename(swcm
)) != NULL
) {
920 cname
= canonify(newname
);
922 printf("%s: canonify: %s\n", newname
, fxp_error());
927 ret
&= func(ctx
, cname
);
932 /* Politely warn the user that nothing matched. */
933 printf("%s: nothing matched\n", filename
);
936 sftp_finish_wildcard_matching(swcm
);
938 cname
= canonify(unwcfname
);
940 printf("%s: canonify: %s\n", filename
, fxp_error());
943 ret
= func(ctx
, cname
);
952 * Handy helper function.
954 int is_wildcard(char *name
)
956 char *unwcfname
= snewn(strlen(name
)+1, char);
957 int is_wc
= !wc_unescape(unwcfname
, name
);
962 /* ----------------------------------------------------------------------
963 * Actual sftp commands.
965 struct sftp_command
{
967 int nwords
, wordssize
;
968 int (*obey
) (struct sftp_command
*); /* returns <0 to quit */
971 int sftp_cmd_null(struct sftp_command
*cmd
)
973 return 1; /* success */
976 int sftp_cmd_unknown(struct sftp_command
*cmd
)
978 printf("psftp: unknown command \"%s\"\n", cmd
->words
[0]);
979 return 0; /* failure */
982 int sftp_cmd_quit(struct sftp_command
*cmd
)
987 int sftp_cmd_close(struct sftp_command
*cmd
)
994 if (back
!= NULL
&& back
->connected(backhandle
)) {
996 back
->special(backhandle
, TS_EOF
);
998 sftp_recvdata(&ch
, 1);
1006 * List a directory. If no arguments are given, list pwd; otherwise
1007 * list the directory given in words[1].
1009 int sftp_cmd_ls(struct sftp_command
*cmd
)
1011 struct fxp_handle
*dirh
;
1012 struct fxp_names
*names
;
1013 struct fxp_name
**ournames
;
1014 int nnames
, namesize
;
1015 char *dir
, *cdir
, *unwcdir
, *wildcard
;
1016 struct sftp_packet
*pktin
;
1017 struct sftp_request
*req
;
1025 if (cmd
->nwords
< 2)
1028 dir
= cmd
->words
[1];
1030 unwcdir
= snewn(1 + strlen(dir
), char);
1031 if (wc_unescape(unwcdir
, dir
)) {
1039 wildcard
= stripslashes(dir
, 0);
1040 unwcdir
= dupstr(dir
);
1041 len
= wildcard
- dir
;
1042 unwcdir
[len
] = '\0';
1043 if (len
> 0 && unwcdir
[len
-1] == '/')
1044 unwcdir
[len
-1] = '\0';
1045 tmpdir
= snewn(1 + len
, char);
1046 check
= wc_unescape(tmpdir
, unwcdir
);
1049 printf("Multiple-level wildcards are not supported\n");
1056 cdir
= canonify(dir
);
1058 printf("%s: canonify: %s\n", dir
, fxp_error());
1063 printf("Listing directory %s\n", cdir
);
1065 req
= fxp_opendir_send(cdir
);
1066 pktin
= sftp_wait_for_reply(req
);
1067 dirh
= fxp_opendir_recv(pktin
, req
);
1070 printf("Unable to open %s: %s\n", dir
, fxp_error());
1072 nnames
= namesize
= 0;
1077 req
= fxp_readdir_send(dirh
);
1078 pktin
= sftp_wait_for_reply(req
);
1079 names
= fxp_readdir_recv(pktin
, req
);
1081 if (names
== NULL
) {
1082 if (fxp_error_type() == SSH_FX_EOF
)
1084 printf("Reading directory %s: %s\n", dir
, fxp_error());
1087 if (names
->nnames
== 0) {
1088 fxp_free_names(names
);
1092 if (nnames
+ names
->nnames
>= namesize
) {
1093 namesize
+= names
->nnames
+ 128;
1094 ournames
= sresize(ournames
, namesize
, struct fxp_name
*);
1097 for (i
= 0; i
< names
->nnames
; i
++)
1098 if (!wildcard
|| wc_match(wildcard
, names
->names
[i
].filename
))
1099 ournames
[nnames
++] = fxp_dup_name(&names
->names
[i
]);
1101 fxp_free_names(names
);
1103 req
= fxp_close_send(dirh
);
1104 pktin
= sftp_wait_for_reply(req
);
1105 fxp_close_recv(pktin
, req
);
1108 * Now we have our filenames. Sort them by actual file
1109 * name, and then output the longname parts.
1112 qsort(ournames
, nnames
, sizeof(*ournames
), sftp_name_compare
);
1117 for (i
= 0; i
< nnames
; i
++) {
1118 printf("%s\n", ournames
[i
]->longname
);
1119 fxp_free_name(ournames
[i
]);
1131 * Change directories. We do this by canonifying the new name, then
1132 * trying to OPENDIR it. Only if that succeeds do we set the new pwd.
1134 int sftp_cmd_cd(struct sftp_command
*cmd
)
1136 struct fxp_handle
*dirh
;
1137 struct sftp_packet
*pktin
;
1138 struct sftp_request
*req
;
1146 if (cmd
->nwords
< 2)
1147 dir
= dupstr(homedir
);
1149 dir
= canonify(cmd
->words
[1]);
1152 printf("%s: canonify: %s\n", dir
, fxp_error());
1156 req
= fxp_opendir_send(dir
);
1157 pktin
= sftp_wait_for_reply(req
);
1158 dirh
= fxp_opendir_recv(pktin
, req
);
1161 printf("Directory %s: %s\n", dir
, fxp_error());
1166 req
= fxp_close_send(dirh
);
1167 pktin
= sftp_wait_for_reply(req
);
1168 fxp_close_recv(pktin
, req
);
1172 printf("Remote directory is now %s\n", pwd
);
1178 * Print current directory. Easy as pie.
1180 int sftp_cmd_pwd(struct sftp_command
*cmd
)
1187 printf("Remote directory is %s\n", pwd
);
1192 * Get a file and save it at the local end. We have three very
1193 * similar commands here. The basic one is `get'; `reget' differs
1194 * in that it checks for the existence of the destination file and
1195 * starts from where a previous aborted transfer left off; `mget'
1196 * differs in that it interprets all its arguments as files to
1197 * transfer (never as a different local name for a remote file) and
1198 * can handle wildcards.
1200 int sftp_general_get(struct sftp_command
*cmd
, int restart
, int multiple
)
1202 char *fname
, *unwcfname
, *origfname
, *origwfname
, *outfname
;
1204 int recurse
= FALSE
;
1212 while (i
< cmd
->nwords
&& cmd
->words
[i
][0] == '-') {
1213 if (!strcmp(cmd
->words
[i
], "--")) {
1214 /* finish processing options */
1217 } else if (!strcmp(cmd
->words
[i
], "-r")) {
1220 printf("%s: unrecognised option '%s'\n", cmd
->words
[0], cmd
->words
[i
]);
1226 if (i
>= cmd
->nwords
) {
1227 printf("%s: expects a filename\n", cmd
->words
[0]);
1233 SftpWildcardMatcher
*swcm
;
1235 origfname
= cmd
->words
[i
++];
1236 unwcfname
= snewn(strlen(origfname
)+1, char);
1238 if (multiple
&& !wc_unescape(unwcfname
, origfname
)) {
1239 swcm
= sftp_begin_wildcard_matching(origfname
);
1244 origwfname
= sftp_wildcard_get_filename(swcm
);
1246 /* Politely warn the user that nothing matched. */
1247 printf("%s: nothing matched\n", origfname
);
1248 sftp_finish_wildcard_matching(swcm
);
1253 origwfname
= origfname
;
1257 while (origwfname
) {
1258 fname
= canonify(origwfname
);
1261 printf("%s: canonify: %s\n", origwfname
, fxp_error());
1266 if (!multiple
&& i
< cmd
->nwords
)
1267 outfname
= cmd
->words
[i
++];
1269 outfname
= stripslashes(origwfname
, 0);
1271 ret
= sftp_get_file(fname
, outfname
, recurse
, restart
);
1277 origwfname
= sftp_wildcard_get_filename(swcm
);
1284 sftp_finish_wildcard_matching(swcm
);
1288 } while (multiple
&& i
< cmd
->nwords
);
1292 int sftp_cmd_get(struct sftp_command
*cmd
)
1294 return sftp_general_get(cmd
, 0, 0);
1296 int sftp_cmd_mget(struct sftp_command
*cmd
)
1298 return sftp_general_get(cmd
, 0, 1);
1300 int sftp_cmd_reget(struct sftp_command
*cmd
)
1302 return sftp_general_get(cmd
, 1, 0);
1306 * Send a file and store it at the remote end. We have three very
1307 * similar commands here. The basic one is `put'; `reput' differs
1308 * in that it checks for the existence of the destination file and
1309 * starts from where a previous aborted transfer left off; `mput'
1310 * differs in that it interprets all its arguments as files to
1311 * transfer (never as a different remote name for a local file) and
1312 * can handle wildcards.
1314 int sftp_general_put(struct sftp_command
*cmd
, int restart
, int multiple
)
1316 char *fname
, *wfname
, *origoutfname
, *outfname
;
1318 int recurse
= FALSE
;
1326 while (i
< cmd
->nwords
&& cmd
->words
[i
][0] == '-') {
1327 if (!strcmp(cmd
->words
[i
], "--")) {
1328 /* finish processing options */
1331 } else if (!strcmp(cmd
->words
[i
], "-r")) {
1334 printf("%s: unrecognised option '%s'\n", cmd
->words
[0], cmd
->words
[i
]);
1340 if (i
>= cmd
->nwords
) {
1341 printf("%s: expects a filename\n", cmd
->words
[0]);
1347 WildcardMatcher
*wcm
;
1348 fname
= cmd
->words
[i
++];
1350 if (multiple
&& test_wildcard(fname
, FALSE
) == WCTYPE_WILDCARD
) {
1351 wcm
= begin_wildcard_matching(fname
);
1352 wfname
= wildcard_get_filename(wcm
);
1354 /* Politely warn the user that nothing matched. */
1355 printf("%s: nothing matched\n", fname
);
1356 finish_wildcard_matching(wcm
);
1365 if (!multiple
&& i
< cmd
->nwords
)
1366 origoutfname
= cmd
->words
[i
++];
1368 origoutfname
= stripslashes(wfname
, 1);
1370 outfname
= canonify(origoutfname
);
1372 printf("%s: canonify: %s\n", origoutfname
, fxp_error());
1375 finish_wildcard_matching(wcm
);
1379 ret
= sftp_put_file(wfname
, outfname
, recurse
, restart
);
1384 wfname
= wildcard_get_filename(wcm
);
1391 finish_wildcard_matching(wcm
);
1396 } while (multiple
&& i
< cmd
->nwords
);
1400 int sftp_cmd_put(struct sftp_command
*cmd
)
1402 return sftp_general_put(cmd
, 0, 0);
1404 int sftp_cmd_mput(struct sftp_command
*cmd
)
1406 return sftp_general_put(cmd
, 0, 1);
1408 int sftp_cmd_reput(struct sftp_command
*cmd
)
1410 return sftp_general_put(cmd
, 1, 0);
1413 int sftp_cmd_mkdir(struct sftp_command
*cmd
)
1416 struct sftp_packet
*pktin
;
1417 struct sftp_request
*req
;
1426 if (cmd
->nwords
< 2) {
1427 printf("mkdir: expects a directory\n");
1432 for (i
= 1; i
< cmd
->nwords
; i
++) {
1433 dir
= canonify(cmd
->words
[i
]);
1435 printf("%s: canonify: %s\n", dir
, fxp_error());
1439 req
= fxp_mkdir_send(dir
);
1440 pktin
= sftp_wait_for_reply(req
);
1441 result
= fxp_mkdir_recv(pktin
, req
);
1444 printf("mkdir %s: %s\n", dir
, fxp_error());
1447 printf("mkdir %s: OK\n", dir
);
1455 static int sftp_action_rmdir(void *vctx
, char *dir
)
1457 struct sftp_packet
*pktin
;
1458 struct sftp_request
*req
;
1461 req
= fxp_rmdir_send(dir
);
1462 pktin
= sftp_wait_for_reply(req
);
1463 result
= fxp_rmdir_recv(pktin
, req
);
1466 printf("rmdir %s: %s\n", dir
, fxp_error());
1470 printf("rmdir %s: OK\n", dir
);
1475 int sftp_cmd_rmdir(struct sftp_command
*cmd
)
1484 if (cmd
->nwords
< 2) {
1485 printf("rmdir: expects a directory\n");
1490 for (i
= 1; i
< cmd
->nwords
; i
++)
1491 ret
&= wildcard_iterate(cmd
->words
[i
], sftp_action_rmdir
, NULL
);
1496 static int sftp_action_rm(void *vctx
, char *fname
)
1498 struct sftp_packet
*pktin
;
1499 struct sftp_request
*req
;
1502 req
= fxp_remove_send(fname
);
1503 pktin
= sftp_wait_for_reply(req
);
1504 result
= fxp_remove_recv(pktin
, req
);
1507 printf("rm %s: %s\n", fname
, fxp_error());
1511 printf("rm %s: OK\n", fname
);
1516 int sftp_cmd_rm(struct sftp_command
*cmd
)
1525 if (cmd
->nwords
< 2) {
1526 printf("rm: expects a filename\n");
1531 for (i
= 1; i
< cmd
->nwords
; i
++)
1532 ret
&= wildcard_iterate(cmd
->words
[i
], sftp_action_rm
, NULL
);
1537 static int check_is_dir(char *dstfname
)
1539 struct sftp_packet
*pktin
;
1540 struct sftp_request
*req
;
1541 struct fxp_attrs attrs
;
1544 req
= fxp_stat_send(dstfname
);
1545 pktin
= sftp_wait_for_reply(req
);
1546 result
= fxp_stat_recv(pktin
, req
, &attrs
);
1549 (attrs
.flags
& SSH_FILEXFER_ATTR_PERMISSIONS
) &&
1550 (attrs
.permissions
& 0040000))
1556 struct sftp_context_mv
{
1561 static int sftp_action_mv(void *vctx
, char *srcfname
)
1563 struct sftp_context_mv
*ctx
= (struct sftp_context_mv
*)vctx
;
1564 struct sftp_packet
*pktin
;
1565 struct sftp_request
*req
;
1567 char *finalfname
, *newcanon
= NULL
;
1570 if (ctx
->dest_is_dir
) {
1574 p
= srcfname
+ strlen(srcfname
);
1575 while (p
> srcfname
&& p
[-1] != '/') p
--;
1576 newname
= dupcat(ctx
->dstfname
, "/", p
, NULL
);
1577 newcanon
= canonify(newname
);
1579 printf("%s: canonify: %s\n", newname
, fxp_error());
1585 finalfname
= newcanon
;
1587 finalfname
= ctx
->dstfname
;
1590 req
= fxp_rename_send(srcfname
, finalfname
);
1591 pktin
= sftp_wait_for_reply(req
);
1592 result
= fxp_rename_recv(pktin
, req
);
1594 error
= result ? NULL
: fxp_error();
1597 printf("mv %s %s: %s\n", srcfname
, finalfname
, error
);
1600 printf("%s -> %s\n", srcfname
, finalfname
);
1608 int sftp_cmd_mv(struct sftp_command
*cmd
)
1610 struct sftp_context_mv actx
, *ctx
= &actx
;
1618 if (cmd
->nwords
< 3) {
1619 printf("mv: expects two filenames\n");
1623 ctx
->dstfname
= canonify(cmd
->words
[cmd
->nwords
-1]);
1624 if (!ctx
->dstfname
) {
1625 printf("%s: canonify: %s\n", ctx
->dstfname
, fxp_error());
1630 * If there's more than one source argument, or one source
1631 * argument which is a wildcard, we _require_ that the
1632 * destination is a directory.
1634 ctx
->dest_is_dir
= check_is_dir(ctx
->dstfname
);
1635 if ((cmd
->nwords
> 3 || is_wildcard(cmd
->words
[1])) && !ctx
->dest_is_dir
) {
1636 printf("mv: multiple or wildcard arguments require the destination"
1637 " to be a directory\n");
1638 sfree(ctx
->dstfname
);
1643 * Now iterate over the source arguments.
1646 for (i
= 1; i
< cmd
->nwords
-1; i
++)
1647 ret
&= wildcard_iterate(cmd
->words
[i
], sftp_action_mv
, ctx
);
1649 sfree(ctx
->dstfname
);
1653 struct sftp_context_chmod
{
1654 unsigned attrs_clr
, attrs_xor
;
1657 static int sftp_action_chmod(void *vctx
, char *fname
)
1659 struct fxp_attrs attrs
;
1660 struct sftp_packet
*pktin
;
1661 struct sftp_request
*req
;
1663 unsigned oldperms
, newperms
;
1664 struct sftp_context_chmod
*ctx
= (struct sftp_context_chmod
*)vctx
;
1666 req
= fxp_stat_send(fname
);
1667 pktin
= sftp_wait_for_reply(req
);
1668 result
= fxp_stat_recv(pktin
, req
, &attrs
);
1670 if (!result
|| !(attrs
.flags
& SSH_FILEXFER_ATTR_PERMISSIONS
)) {
1671 printf("get attrs for %s: %s\n", fname
,
1672 result ?
"file permissions not provided" : fxp_error());
1676 attrs
.flags
= SSH_FILEXFER_ATTR_PERMISSIONS
; /* perms _only_ */
1677 oldperms
= attrs
.permissions
& 07777;
1678 attrs
.permissions
&= ~ctx
->attrs_clr
;
1679 attrs
.permissions
^= ctx
->attrs_xor
;
1680 newperms
= attrs
.permissions
& 07777;
1682 if (oldperms
== newperms
)
1683 return 1; /* no need to do anything! */
1685 req
= fxp_setstat_send(fname
, attrs
);
1686 pktin
= sftp_wait_for_reply(req
);
1687 result
= fxp_setstat_recv(pktin
, req
);
1690 printf("set attrs for %s: %s\n", fname
, fxp_error());
1694 printf("%s: %04o -> %04o\n", fname
, oldperms
, newperms
);
1699 int sftp_cmd_chmod(struct sftp_command
*cmd
)
1703 struct sftp_context_chmod actx
, *ctx
= &actx
;
1710 if (cmd
->nwords
< 3) {
1711 printf("chmod: expects a mode specifier and a filename\n");
1716 * Attempt to parse the mode specifier in cmd->words[1]. We
1717 * don't support the full horror of Unix chmod; instead we
1718 * support a much simpler syntax in which the user can either
1719 * specify an octal number, or a comma-separated sequence of
1720 * [ugoa]*[-+=][rwxst]+. (The initial [ugoa] sequence may
1721 * _only_ be omitted if the only attribute mentioned is t,
1722 * since all others require a user/group/other specification.
1723 * Additionally, the s attribute may not be specified for any
1724 * [ugoa] specifications other than exactly u or exactly g.
1726 ctx
->attrs_clr
= ctx
->attrs_xor
= 0;
1727 mode
= cmd
->words
[1];
1728 if (mode
[0] >= '0' && mode
[0] <= '9') {
1729 if (mode
[strspn(mode
, "01234567")]) {
1730 printf("chmod: numeric file modes should"
1731 " contain digits 0-7 only\n");
1734 ctx
->attrs_clr
= 07777;
1735 sscanf(mode
, "%o", &ctx
->attrs_xor
);
1736 ctx
->attrs_xor
&= ctx
->attrs_clr
;
1739 char *modebegin
= mode
;
1740 unsigned subset
, perms
;
1744 while (*mode
&& *mode
!= ',' &&
1745 *mode
!= '+' && *mode
!= '-' && *mode
!= '=') {
1747 case 'u': subset
|= 04700; break; /* setuid, user perms */
1748 case 'g': subset
|= 02070; break; /* setgid, group perms */
1749 case 'o': subset
|= 00007; break; /* just other perms */
1750 case 'a': subset
|= 06777; break; /* all of the above */
1752 printf("chmod: file mode '%.*s' contains unrecognised"
1753 " user/group/other specifier '%c'\n",
1754 (int)strcspn(modebegin
, ","), modebegin
, *mode
);
1759 if (!*mode
|| *mode
== ',') {
1760 printf("chmod: file mode '%.*s' is incomplete\n",
1761 (int)strcspn(modebegin
, ","), modebegin
);
1765 if (!*mode
|| *mode
== ',') {
1766 printf("chmod: file mode '%.*s' is incomplete\n",
1767 (int)strcspn(modebegin
, ","), modebegin
);
1771 while (*mode
&& *mode
!= ',') {
1773 case 'r': perms
|= 00444; break;
1774 case 'w': perms
|= 00222; break;
1775 case 'x': perms
|= 00111; break;
1776 case 't': perms
|= 01000; subset
|= 01000; break;
1778 if ((subset
& 06777) != 04700 &&
1779 (subset
& 06777) != 02070) {
1780 printf("chmod: file mode '%.*s': set[ug]id bit should"
1781 " be used with exactly one of u or g only\n",
1782 (int)strcspn(modebegin
, ","), modebegin
);
1788 printf("chmod: file mode '%.*s' contains unrecognised"
1789 " permission specifier '%c'\n",
1790 (int)strcspn(modebegin
, ","), modebegin
, *mode
);
1795 if (!(subset
& 06777) && (perms
&~ subset
)) {
1796 printf("chmod: file mode '%.*s' contains no user/group/other"
1797 " specifier and permissions other than 't' \n",
1798 (int)strcspn(modebegin
, ","), modebegin
);
1804 ctx
->attrs_clr
|= perms
;
1805 ctx
->attrs_xor
|= perms
;
1808 ctx
->attrs_clr
|= perms
;
1809 ctx
->attrs_xor
&= ~perms
;
1812 ctx
->attrs_clr
|= subset
;
1813 ctx
->attrs_xor
|= perms
;
1816 if (*mode
) mode
++; /* eat comma */
1821 for (i
= 2; i
< cmd
->nwords
; i
++)
1822 ret
&= wildcard_iterate(cmd
->words
[i
], sftp_action_chmod
, ctx
);
1827 static int sftp_cmd_open(struct sftp_command
*cmd
)
1832 printf("psftp: already connected\n");
1836 if (cmd
->nwords
< 2) {
1837 printf("open: expects a host name\n");
1841 if (cmd
->nwords
> 2) {
1842 portnumber
= atoi(cmd
->words
[2]);
1843 if (portnumber
== 0) {
1844 printf("open: invalid port number\n");
1850 if (psftp_connect(cmd
->words
[1], NULL
, portnumber
)) {
1851 back
= NULL
; /* connection is already closed */
1852 return -1; /* this is fatal */
1858 static int sftp_cmd_lcd(struct sftp_command
*cmd
)
1860 char *currdir
, *errmsg
;
1862 if (cmd
->nwords
< 2) {
1863 printf("lcd: expects a local directory name\n");
1867 errmsg
= psftp_lcd(cmd
->words
[1]);
1869 printf("lcd: unable to change directory: %s\n", errmsg
);
1874 currdir
= psftp_getcwd();
1875 printf("New local directory is %s\n", currdir
);
1881 static int sftp_cmd_lpwd(struct sftp_command
*cmd
)
1885 currdir
= psftp_getcwd();
1886 printf("Current local directory is %s\n", currdir
);
1892 static int sftp_cmd_pling(struct sftp_command
*cmd
)
1896 exitcode
= system(cmd
->words
[1]);
1897 return (exitcode
== 0);
1900 static int sftp_cmd_help(struct sftp_command
*cmd
);
1902 static struct sftp_cmd_lookup
{
1905 * For help purposes, there are two kinds of command:
1907 * - primary commands, in which `longhelp' is non-NULL. In
1908 * this case `shorthelp' is descriptive text, and `longhelp'
1909 * is longer descriptive text intended to be printed after
1912 * - alias commands, in which `longhelp' is NULL. In this case
1913 * `shorthelp' is the name of a primary command, which
1914 * contains the help that should double up for this command.
1916 int listed
; /* do we list this in primary help? */
1919 int (*obey
) (struct sftp_command
*);
1922 * List of sftp commands. This is binary-searched so it MUST be
1926 "!", TRUE
, "run a local command",
1928 /* FIXME: this example is crap for non-Windows. */
1929 " Runs a local command. For example, \"!del myfile\".\n",
1933 "bye", TRUE
, "finish your SFTP session",
1935 " Terminates your SFTP session and quits the PSFTP program.\n",
1939 "cd", TRUE
, "change your remote working directory",
1940 " [ <new working directory> ]\n"
1941 " Change the remote working directory for your SFTP session.\n"
1942 " If a new working directory is not supplied, you will be\n"
1943 " returned to your home directory.\n",
1947 "chmod", TRUE
, "change file permissions and modes",
1948 " <modes> <filename-or-wildcard> [ <filename-or-wildcard>... ]\n"
1949 " Change the file permissions on one or more remote files or\n"
1951 " <modes> can be any octal Unix permission specifier.\n"
1952 " Alternatively, <modes> can include the following modifiers:\n"
1953 " u+r make file readable by owning user\n"
1954 " u+w make file writable by owning user\n"
1955 " u+x make file executable by owning user\n"
1956 " u-r make file not readable by owning user\n"
1957 " [also u-w, u-x]\n"
1958 " g+r make file readable by members of owning group\n"
1959 " [also g+w, g+x, g-r, g-w, g-x]\n"
1960 " o+r make file readable by all other users\n"
1961 " [also o+w, o+x, o-r, o-w, o-x]\n"
1962 " a+r make file readable by absolutely everybody\n"
1963 " [also a+w, a+x, a-r, a-w, a-x]\n"
1964 " u+s enable the Unix set-user-ID bit\n"
1965 " u-s disable the Unix set-user-ID bit\n"
1966 " g+s enable the Unix set-group-ID bit\n"
1967 " g-s disable the Unix set-group-ID bit\n"
1968 " +t enable the Unix \"sticky bit\"\n"
1969 " You can give more than one modifier for the same user (\"g-rwx\"), and\n"
1970 " more than one user for the same modifier (\"ug+w\"). You can\n"
1971 " use commas to separate different modifiers (\"u+rwx,g+s\").\n",
1975 "close", TRUE
, "finish your SFTP session but do not quit PSFTP",
1977 " Terminates your SFTP session, but does not quit the PSFTP\n"
1978 " program. You can then use \"open\" to start another SFTP\n"
1979 " session, to the same server or to a different one.\n",
1983 "del", TRUE
, "delete files on the remote server",
1984 " <filename-or-wildcard> [ <filename-or-wildcard>... ]\n"
1985 " Delete a file or files from the server.\n",
1989 "delete", FALSE
, "del", NULL
, sftp_cmd_rm
1992 "dir", TRUE
, "list remote files",
1993 " [ <directory-name> ]/[ <wildcard> ]\n"
1994 " List the contents of a specified directory on the server.\n"
1995 " If <directory-name> is not given, the current working directory\n"
1997 " If <wildcard> is given, it is treated as a set of files to\n"
1998 " list; otherwise, all files are listed.\n",
2002 "exit", TRUE
, "bye", NULL
, sftp_cmd_quit
2005 "get", TRUE
, "download a file from the server to your local machine",
2006 " [ -r ] [ -- ] <filename> [ <local-filename> ]\n"
2007 " Downloads a file on the server and stores it locally under\n"
2008 " the same name, or under a different one if you supply the\n"
2009 " argument <local-filename>.\n"
2010 " If -r specified, recursively fetch a directory.\n",
2014 "help", TRUE
, "give help",
2015 " [ <command> [ <command> ... ] ]\n"
2016 " Give general help if no commands are specified.\n"
2017 " If one or more commands are specified, give specific help on\n"
2018 " those particular commands.\n",
2022 "lcd", TRUE
, "change local working directory",
2023 " <local-directory-name>\n"
2024 " Change the local working directory of the PSFTP program (the\n"
2025 " default location where the \"get\" command will save files).\n",
2029 "lpwd", TRUE
, "print local working directory",
2031 " Print the local working directory of the PSFTP program (the\n"
2032 " default location where the \"get\" command will save files).\n",
2036 "ls", TRUE
, "dir", NULL
,
2040 "mget", TRUE
, "download multiple files at once",
2041 " [ -r ] [ -- ] <filename-or-wildcard> [ <filename-or-wildcard>... ]\n"
2042 " Downloads many files from the server, storing each one under\n"
2043 " the same name it has on the server side. You can use wildcards\n"
2044 " such as \"*.c\" to specify lots of files at once.\n"
2045 " If -r specified, recursively fetch files and directories.\n",
2049 "mkdir", TRUE
, "create directories on the remote server",
2050 " <directory-name> [ <directory-name>... ]\n"
2051 " Creates directories with the given names on the server.\n",
2055 "mput", TRUE
, "upload multiple files at once",
2056 " [ -r ] [ -- ] <filename-or-wildcard> [ <filename-or-wildcard>... ]\n"
2057 " Uploads many files to the server, storing each one under the\n"
2058 " same name it has on the client side. You can use wildcards\n"
2059 " such as \"*.c\" to specify lots of files at once.\n"
2060 " If -r specified, recursively store files and directories.\n",
2064 "mv", TRUE
, "move or rename file(s) on the remote server",
2065 " <source> [ <source>... ] <destination>\n"
2066 " Moves or renames <source>(s) on the server to <destination>,\n"
2067 " also on the server.\n"
2068 " If <destination> specifies an existing directory, then <source>\n"
2069 " may be a wildcard, and multiple <source>s may be given; all\n"
2070 " source files are moved into <destination>.\n"
2071 " Otherwise, <source> must specify a single file, which is moved\n"
2072 " or renamed so that it is accessible under the name <destination>.\n",
2076 "open", TRUE
, "connect to a host",
2077 " [<user>@]<hostname> [<port>]\n"
2078 " Establishes an SFTP connection to a given host. Only usable\n"
2079 " when you are not already connected to a server.\n",
2083 "put", TRUE
, "upload a file from your local machine to the server",
2084 " [ -r ] [ -- ] <filename> [ <remote-filename> ]\n"
2085 " Uploads a file to the server and stores it there under\n"
2086 " the same name, or under a different one if you supply the\n"
2087 " argument <remote-filename>.\n"
2088 " If -r specified, recursively store a directory.\n",
2092 "pwd", TRUE
, "print your remote working directory",
2094 " Print the current remote working directory for your SFTP session.\n",
2098 "quit", TRUE
, "bye", NULL
,
2102 "reget", TRUE
, "continue downloading files",
2103 " [ -r ] [ -- ] <filename> [ <local-filename> ]\n"
2104 " Works exactly like the \"get\" command, but the local file\n"
2105 " must already exist. The download will begin at the end of the\n"
2106 " file. This is for resuming a download that was interrupted.\n"
2107 " If -r specified, resume interrupted \"get -r\".\n",
2111 "ren", TRUE
, "mv", NULL
,
2115 "rename", FALSE
, "mv", NULL
,
2119 "reput", TRUE
, "continue uploading files",
2120 " [ -r ] [ -- ] <filename> [ <remote-filename> ]\n"
2121 " Works exactly like the \"put\" command, but the remote file\n"
2122 " must already exist. The upload will begin at the end of the\n"
2123 " file. This is for resuming an upload that was interrupted.\n"
2124 " If -r specified, resume interrupted \"put -r\".\n",
2128 "rm", TRUE
, "del", NULL
,
2132 "rmdir", TRUE
, "remove directories on the remote server",
2133 " <directory-name> [ <directory-name>... ]\n"
2134 " Removes the directory with the given name on the server.\n"
2135 " The directory will not be removed unless it is empty.\n"
2136 " Wildcards may be used to specify multiple directories.\n",
2141 const struct sftp_cmd_lookup
*lookup_command(char *name
)
2146 j
= sizeof(sftp_lookup
) / sizeof(*sftp_lookup
);
2149 cmp
= strcmp(name
, sftp_lookup
[k
].name
);
2155 return &sftp_lookup
[k
];
2161 static int sftp_cmd_help(struct sftp_command
*cmd
)
2164 if (cmd
->nwords
== 1) {
2166 * Give short help on each command.
2170 for (i
= 0; i
< sizeof(sftp_lookup
) / sizeof(*sftp_lookup
); i
++) {
2172 if (!sftp_lookup
[i
].listed
)
2174 len
= strlen(sftp_lookup
[i
].name
);
2178 for (i
= 0; i
< sizeof(sftp_lookup
) / sizeof(*sftp_lookup
); i
++) {
2179 const struct sftp_cmd_lookup
*lookup
;
2180 if (!sftp_lookup
[i
].listed
)
2182 lookup
= &sftp_lookup
[i
];
2183 printf("%-*s", maxlen
+2, lookup
->name
);
2184 if (lookup
->longhelp
== NULL
)
2185 lookup
= lookup_command(lookup
->shorthelp
);
2186 printf("%s\n", lookup
->shorthelp
);
2190 * Give long help on specific commands.
2192 for (i
= 1; i
< cmd
->nwords
; i
++) {
2193 const struct sftp_cmd_lookup
*lookup
;
2194 lookup
= lookup_command(cmd
->words
[i
]);
2196 printf("help: %s: command not found\n", cmd
->words
[i
]);
2198 printf("%s", lookup
->name
);
2199 if (lookup
->longhelp
== NULL
)
2200 lookup
= lookup_command(lookup
->shorthelp
);
2201 printf("%s", lookup
->longhelp
);
2208 /* ----------------------------------------------------------------------
2209 * Command line reading and parsing.
2211 struct sftp_command
*sftp_getcmd(FILE *fp
, int mode
, int modeflags
)
2214 struct sftp_command
*cmd
;
2218 cmd
= snew(struct sftp_command
);
2228 line
= fgetline(fp
);
2230 line
= ssh_sftp_get_cmdline("psftp> ", back
== NULL
);
2233 if (!line
|| !*line
) {
2234 cmd
->obey
= sftp_cmd_quit
;
2235 if ((mode
== 0) || (modeflags
& 1))
2238 return cmd
; /* eof */
2241 line
[strcspn(line
, "\r\n")] = '\0';
2243 if (modeflags
& 1) {
2244 printf("%s\n", line
);
2248 while (*p
&& (*p
== ' ' || *p
== '\t'))
2253 * Special case: the ! command. This is always parsed as
2254 * exactly two words: one containing the !, and the second
2255 * containing everything else on the line.
2257 cmd
->nwords
= cmd
->wordssize
= 2;
2258 cmd
->words
= sresize(cmd
->words
, cmd
->wordssize
, char *);
2259 cmd
->words
[0] = dupstr("!");
2260 cmd
->words
[1] = dupstr(p
+1);
2261 } else if (*p
== '#') {
2263 * Special case: comment. Entire line is ignored.
2265 cmd
->nwords
= cmd
->wordssize
= 0;
2269 * Parse the command line into words. The syntax is:
2270 * - double quotes are removed, but cause spaces within to be
2271 * treated as non-separating.
2272 * - a double-doublequote pair is a literal double quote, inside
2273 * _or_ outside quotes. Like this:
2275 * firstword "second word" "this has ""quotes"" in" and""this""
2281 * >this has "quotes" in<
2285 /* skip whitespace */
2286 while (*p
&& (*p
== ' ' || *p
== '\t'))
2288 /* terminate loop */
2291 /* mark start of word */
2292 q
= r
= p
; /* q sits at start, r writes word */
2295 if (!quoting
&& (*p
== ' ' || *p
== '\t'))
2296 break; /* reached end of word */
2297 else if (*p
== '"' && p
[1] == '"')
2298 p
+= 2, *r
++ = '"'; /* a literal quote */
2300 p
++, quoting
= !quoting
;
2305 p
++; /* skip over the whitespace */
2307 if (cmd
->nwords
>= cmd
->wordssize
) {
2308 cmd
->wordssize
= cmd
->nwords
+ 16;
2309 cmd
->words
= sresize(cmd
->words
, cmd
->wordssize
, char *);
2311 cmd
->words
[cmd
->nwords
++] = dupstr(q
);
2318 * Now parse the first word and assign a function.
2321 if (cmd
->nwords
== 0)
2322 cmd
->obey
= sftp_cmd_null
;
2324 const struct sftp_cmd_lookup
*lookup
;
2325 lookup
= lookup_command(cmd
->words
[0]);
2327 cmd
->obey
= sftp_cmd_unknown
;
2329 cmd
->obey
= lookup
->obey
;
2335 static int do_sftp_init(void)
2337 struct sftp_packet
*pktin
;
2338 struct sftp_request
*req
;
2341 * Do protocol initialisation.
2345 "Fatal: unable to initialise SFTP: %s\n", fxp_error());
2346 return 1; /* failure */
2350 * Find out where our home directory is.
2352 req
= fxp_realpath_send(".");
2353 pktin
= sftp_wait_for_reply(req
);
2354 homedir
= fxp_realpath_recv(pktin
, req
);
2358 "Warning: failed to resolve home directory: %s\n",
2360 homedir
= dupstr(".");
2362 printf("Remote working directory is %s\n", homedir
);
2364 pwd
= dupstr(homedir
);
2368 void do_sftp_cleanup()
2372 back
->special(backhandle
, TS_EOF
);
2374 sftp_recvdata(&ch
, 1);
2375 back
->free(backhandle
);
2376 sftp_cleanup_request();
2390 void do_sftp(int mode
, int modeflags
, char *batchfile
)
2400 /* ------------------------------------------------------------------
2401 * Now we're ready to do Real Stuff.
2404 struct sftp_command
*cmd
;
2405 cmd
= sftp_getcmd(NULL
, 0, 0);
2408 ret
= cmd
->obey(cmd
);
2411 for(i
= 0; i
< cmd
->nwords
; i
++)
2412 sfree(cmd
->words
[i
]);
2420 fp
= fopen(batchfile
, "r");
2422 printf("Fatal: unable to open %s\n", batchfile
);
2426 struct sftp_command
*cmd
;
2427 cmd
= sftp_getcmd(fp
, mode
, modeflags
);
2430 ret
= cmd
->obey(cmd
);
2434 if (!(modeflags
& 2))
2443 /* ----------------------------------------------------------------------
2444 * Dirty bits: integration with PuTTY.
2447 static int verbose
= 0;
2450 * Print an error message and perform a fatal exit.
2452 void fatalbox(char *fmt
, ...)
2457 str
= dupvprintf(fmt
, ap
);
2458 str2
= dupcat("Fatal: ", str
, "\n", NULL
);
2461 fputs(str2
, stderr
);
2466 void modalfatalbox(char *fmt
, ...)
2471 str
= dupvprintf(fmt
, ap
);
2472 str2
= dupcat("Fatal: ", str
, "\n", NULL
);
2475 fputs(str2
, stderr
);
2480 void nonfatal(char *fmt
, ...)
2485 str
= dupvprintf(fmt
, ap
);
2486 str2
= dupcat("Error: ", str
, "\n", NULL
);
2489 fputs(str2
, stderr
);
2492 void connection_fatal(void *frontend
, char *fmt
, ...)
2497 str
= dupvprintf(fmt
, ap
);
2498 str2
= dupcat("Fatal: ", str
, "\n", NULL
);
2501 fputs(str2
, stderr
);
2507 void ldisc_send(void *handle
, char *buf
, int len
, int interactive
)
2510 * This is only here because of the calls to ldisc_send(NULL,
2511 * 0) in ssh.c. Nothing in PSFTP actually needs to use the
2512 * ldisc as an ldisc. So if we get called with any real data, I
2513 * want to know about it.
2519 * In psftp, all agent requests should be synchronous, so this is a
2520 * never-called stub.
2522 void agent_schedule_callback(void (*callback
)(void *, void *, int),
2523 void *callback_ctx
, void *data
, int len
)
2525 assert(!"We shouldn't be here");
2529 * Receive a block of data from the SSH link. Block until all data
2532 * To do this, we repeatedly call the SSH protocol module, with our
2533 * own trap in from_backend() to catch the data that comes back. We
2534 * do this until we have enough data.
2537 static unsigned char *outptr
; /* where to put the data */
2538 static unsigned outlen
; /* how much data required */
2539 static unsigned char *pending
= NULL
; /* any spare data */
2540 static unsigned pendlen
= 0, pendsize
= 0; /* length and phys. size of buffer */
2541 int from_backend(void *frontend
, int is_stderr
, const char *data
, int datalen
)
2543 unsigned char *p
= (unsigned char *) data
;
2544 unsigned len
= (unsigned) datalen
;
2547 * stderr data is just spouted to local stderr and otherwise
2552 if (fwrite(data
, 1, len
, stderr
) < len
)
2558 * If this is before the real session begins, just return.
2563 if ((outlen
> 0) && (len
> 0)) {
2564 unsigned used
= outlen
;
2567 memcpy(outptr
, p
, used
);
2575 if (pendsize
< pendlen
+ len
) {
2576 pendsize
= pendlen
+ len
+ 4096;
2577 pending
= sresize(pending
, pendsize
, unsigned char);
2579 memcpy(pending
+ pendlen
, p
, len
);
2585 int from_backend_untrusted(void *frontend_handle
, const char *data
, int len
)
2588 * No "untrusted" output should get here (the way the code is
2589 * currently, it's all diverted by FLAG_STDERR).
2591 assert(!"Unexpected call to from_backend_untrusted()");
2592 return 0; /* not reached */
2594 int from_backend_eof(void *frontend
)
2597 * We expect to be the party deciding when to close the
2598 * connection, so if we see EOF before we sent it ourselves, we
2602 connection_fatal(frontend
,
2603 "Received unexpected end-of-file from SFTP server");
2607 int sftp_recvdata(char *buf
, int len
)
2609 outptr
= (unsigned char *) buf
;
2613 * See if the pending-input block contains some of what we
2617 unsigned pendused
= pendlen
;
2618 if (pendused
> outlen
)
2620 memcpy(outptr
, pending
, pendused
);
2621 memmove(pending
, pending
+ pendused
, pendlen
- pendused
);
2624 pendlen
-= pendused
;
2634 while (outlen
> 0) {
2635 if (back
->exitcode(backhandle
) >= 0 || ssh_sftp_loop_iteration() < 0)
2636 return 0; /* doom */
2641 int sftp_senddata(char *buf
, int len
)
2643 back
->send(backhandle
, buf
, len
);
2648 * Short description of parameters.
2650 static void usage(void)
2652 printf("PuTTY Secure File Transfer (SFTP) client\n");
2653 printf("%s\n", ver
);
2654 printf("Usage: psftp [options] [user@]host\n");
2655 printf("Options:\n");
2656 printf(" -V print version information and exit\n");
2657 printf(" -pgpfp print PGP key fingerprints and exit\n");
2658 printf(" -b file use specified batchfile\n");
2659 printf(" -bc output batchfile commands\n");
2660 printf(" -be don't stop batchfile processing if errors\n");
2661 printf(" -v show verbose messages\n");
2662 printf(" -load sessname Load settings from saved session\n");
2663 printf(" -l user connect with specified username\n");
2664 printf(" -P port connect to specified port\n");
2665 printf(" -pw passw login with specified password\n");
2666 printf(" -1 -2 force use of particular SSH protocol version\n");
2667 printf(" -4 -6 force use of IPv4 or IPv6\n");
2668 printf(" -C enable compression\n");
2669 printf(" -i key private key file for authentication\n");
2670 printf(" -noagent disable use of Pageant\n");
2671 printf(" -agent enable use of Pageant\n");
2672 printf(" -batch disable all interactive prompts\n");
2676 static void version(void)
2678 printf("psftp: %s\n", ver
);
2683 * Connect to a host.
2685 static int psftp_connect(char *userhost
, char *user
, int portnumber
)
2687 char *host
, *realhost
;
2691 /* Separate host and username */
2693 host
= strrchr(host
, '@');
2699 printf("psftp: multiple usernames specified; using \"%s\"\n",
2706 * If we haven't loaded session details already (e.g., from -load),
2707 * try looking for a session called "host".
2709 if (!loaded_session
) {
2710 /* Try to load settings for `host' into a temporary config */
2711 Conf
*conf2
= conf_new();
2712 conf_set_str(conf2
, CONF_host
, "");
2713 do_defaults(host
, conf2
);
2714 if (conf_get_str(conf2
, CONF_host
)[0] != '\0') {
2715 /* Settings present and include hostname */
2716 /* Re-load data into the real config. */
2717 do_defaults(host
, conf
);
2719 /* Session doesn't exist or mention a hostname. */
2720 /* Use `host' as a bare hostname. */
2721 conf_set_str(conf
, CONF_host
, host
);
2724 /* Patch in hostname `host' to session details. */
2725 conf_set_str(conf
, CONF_host
, host
);
2729 * Force use of SSH. (If they got the protocol wrong we assume the
2730 * port is useless too.)
2732 if (conf_get_int(conf
, CONF_protocol
) != PROT_SSH
) {
2733 conf_set_int(conf
, CONF_protocol
, PROT_SSH
);
2734 conf_set_int(conf
, CONF_port
, 22);
2738 * If saved session / Default Settings says SSH-1 (`1 only' or `1'),
2739 * then change it to SSH-2, on the grounds that that's more likely to
2740 * work for SFTP. (Can be overridden with `-1' option.)
2741 * But if it says `2 only' or `2', respect which.
2743 if ((conf_get_int(conf
, CONF_sshprot
) & ~1) != 2) /* is it 2 or 3? */
2744 conf_set_int(conf
, CONF_sshprot
, 2);
2747 * Enact command-line overrides.
2749 cmdline_run_saved(conf
);
2752 * Muck about with the hostname in various ways.
2755 char *hostbuf
= dupstr(conf_get_str(conf
, CONF_host
));
2756 char *host
= hostbuf
;
2760 * Trim leading whitespace.
2762 host
+= strspn(host
, " \t");
2765 * See if host is of the form user@host, and separate out
2766 * the username if so.
2768 if (host
[0] != '\0') {
2769 char *atsign
= strrchr(host
, '@');
2772 conf_set_str(conf
, CONF_username
, host
);
2778 * Remove any remaining whitespace.
2783 if (*q
!= ' ' && *q
!= '\t')
2789 conf_set_str(conf
, CONF_host
, hostbuf
);
2794 if (user
!= NULL
&& user
[0] != '\0') {
2795 conf_set_str(conf
, CONF_username
, user
);
2799 conf_set_int(conf
, CONF_port
, portnumber
);
2802 * Disable scary things which shouldn't be enabled for simple
2803 * things like SCP and SFTP: agent forwarding, port forwarding,
2806 conf_set_int(conf
, CONF_x11_forward
, 0);
2807 conf_set_int(conf
, CONF_agentfwd
, 0);
2808 conf_set_int(conf
, CONF_ssh_simple
, TRUE
);
2811 while ((key
= conf_get_str_nthstrkey(conf
, CONF_portfwd
, 0)) != NULL
)
2812 conf_del_str_str(conf
, CONF_portfwd
, key
);
2815 /* Set up subsystem name. */
2816 conf_set_str(conf
, CONF_remote_cmd
, "sftp");
2817 conf_set_int(conf
, CONF_ssh_subsys
, TRUE
);
2818 conf_set_int(conf
, CONF_nopty
, TRUE
);
2821 * Set up fallback option, for SSH-1 servers or servers with the
2822 * sftp subsystem not enabled but the server binary installed
2823 * in the usual place. We only support fallback on Unix
2824 * systems, and we use a kludgy piece of shellery which should
2825 * try to find sftp-server in various places (the obvious
2826 * systemwide spots /usr/lib and /usr/local/lib, and then the
2827 * user's PATH) and finally give up.
2829 * test -x /usr/lib/sftp-server && exec /usr/lib/sftp-server
2830 * test -x /usr/local/lib/sftp-server && exec /usr/local/lib/sftp-server
2833 * the idea being that this will attempt to use either of the
2834 * obvious pathnames and then give up, and when it does give up
2835 * it will print the preferred pathname in the error messages.
2837 conf_set_str(conf
, CONF_remote_cmd2
,
2838 "test -x /usr/lib/sftp-server &&"
2839 " exec /usr/lib/sftp-server\n"
2840 "test -x /usr/local/lib/sftp-server &&"
2841 " exec /usr/local/lib/sftp-server\n"
2842 "exec sftp-server");
2843 conf_set_int(conf
, CONF_ssh_subsys2
, FALSE
);
2845 back
= &ssh_backend
;
2847 err
= back
->init(NULL
, &backhandle
, conf
,
2848 conf_get_str(conf
, CONF_host
),
2849 conf_get_int(conf
, CONF_port
),
2851 conf_get_int(conf
, CONF_tcp_keepalives
));
2853 fprintf(stderr
, "ssh_init: %s\n", err
);
2856 logctx
= log_init(NULL
, conf
);
2857 back
->provide_logctx(backhandle
, logctx
);
2858 console_provide_logctx(logctx
);
2859 while (!back
->sendok(backhandle
)) {
2860 if (back
->exitcode(backhandle
) >= 0)
2862 if (ssh_sftp_loop_iteration() < 0) {
2863 fprintf(stderr
, "ssh_init: error during SSH connection setup\n");
2867 if (verbose
&& realhost
!= NULL
)
2868 printf("Connected to %s\n", realhost
);
2869 if (realhost
!= NULL
)
2874 void cmdline_error(char *p
, ...)
2877 fprintf(stderr
, "psftp: ");
2879 vfprintf(stderr
, p
, ap
);
2881 fprintf(stderr
, "\n try typing \"psftp -h\" for help\n");
2886 * Main program. Parse arguments etc.
2888 int psftp_main(int argc
, char *argv
[])
2892 char *userhost
, *user
;
2895 char *batchfile
= NULL
;
2897 flags
= FLAG_STDERR
| FLAG_INTERACTIVE
2898 #ifdef FLAG_SYNCAGENT
2902 cmdline_tooltype
= TOOLTYPE_FILETRANSFER
;
2905 userhost
= user
= NULL
;
2907 /* Load Default Settings before doing anything else. */
2909 do_defaults(NULL
, conf
);
2910 loaded_session
= FALSE
;
2912 for (i
= 1; i
< argc
; i
++) {
2914 if (argv
[i
][0] != '-') {
2918 userhost
= dupstr(argv
[i
]);
2921 ret
= cmdline_process_param(argv
[i
], i
+1<argc?argv
[i
+1]:NULL
, 1, conf
);
2923 cmdline_error("option \"%s\" requires an argument", argv
[i
]);
2924 } else if (ret
== 2) {
2925 i
++; /* skip next argument */
2926 } else if (ret
== 1) {
2927 /* We have our own verbosity in addition to `flags'. */
2928 if (flags
& FLAG_VERBOSE
)
2930 } else if (strcmp(argv
[i
], "-h") == 0 ||
2931 strcmp(argv
[i
], "-?") == 0 ||
2932 strcmp(argv
[i
], "--help") == 0) {
2934 } else if (strcmp(argv
[i
], "-pgpfp") == 0) {
2937 } else if (strcmp(argv
[i
], "-V") == 0 ||
2938 strcmp(argv
[i
], "--version") == 0) {
2940 } else if (strcmp(argv
[i
], "-batch") == 0) {
2941 console_batch_mode
= 1;
2942 } else if (strcmp(argv
[i
], "-b") == 0 && i
+ 1 < argc
) {
2944 batchfile
= argv
[++i
];
2945 } else if (strcmp(argv
[i
], "-bc") == 0) {
2946 modeflags
= modeflags
| 1;
2947 } else if (strcmp(argv
[i
], "-be") == 0) {
2948 modeflags
= modeflags
| 2;
2949 } else if (strcmp(argv
[i
], "--") == 0) {
2953 cmdline_error("unknown option \"%s\"", argv
[i
]);
2961 * If the loaded session provides a hostname, and a hostname has not
2962 * otherwise been specified, pop it in `userhost' so that
2963 * `psftp -load sessname' is sufficient to start a session.
2965 if (!userhost
&& conf_get_str(conf
, CONF_host
)[0] != '\0') {
2966 userhost
= dupstr(conf_get_str(conf
, CONF_host
));
2970 * If a user@host string has already been provided, connect to
2975 ret
= psftp_connect(userhost
, user
, portnumber
);
2982 printf("psftp: no hostname specified; use \"open host.name\""
2986 do_sftp(mode
, modeflags
, batchfile
);
2988 if (back
!= NULL
&& back
->connected(backhandle
)) {
2990 back
->special(backhandle
, TS_EOF
);
2992 sftp_recvdata(&ch
, 1);
2997 console_provide_logctx(NULL
);