2 * sftp.c: SFTP generic client code.
15 #define GET_32BIT(cp) \
16 (((unsigned long)(unsigned char)(cp)[0] << 24) | \
17 ((unsigned long)(unsigned char)(cp)[1] << 16) | \
18 ((unsigned long)(unsigned char)(cp)[2] << 8) | \
19 ((unsigned long)(unsigned char)(cp)[3]))
21 #define PUT_32BIT(cp, value) { \
22 (cp)[0] = (unsigned char)((value) >> 24); \
23 (cp)[1] = (unsigned char)((value) >> 16); \
24 (cp)[2] = (unsigned char)((value) >> 8); \
25 (cp)[3] = (unsigned char)(value); }
34 static const char *fxp_error_message
;
35 static int fxp_errtype
;
37 static void fxp_internal_error(char *msg
);
39 /* ----------------------------------------------------------------------
40 * SFTP packet construction functions.
42 static void sftp_pkt_ensure(struct sftp_packet
*pkt
, int length
)
44 if (pkt
->maxlen
< length
) {
45 pkt
->maxlen
= length
+ 256;
46 pkt
->data
= sresize(pkt
->data
, pkt
->maxlen
, char);
49 static void sftp_pkt_adddata(struct sftp_packet
*pkt
, void *data
, int len
)
52 sftp_pkt_ensure(pkt
, pkt
->length
);
53 memcpy(pkt
->data
+ pkt
->length
- len
, data
, len
);
55 static void sftp_pkt_addbyte(struct sftp_packet
*pkt
, unsigned char byte
)
57 sftp_pkt_adddata(pkt
, &byte
, 1);
59 static struct sftp_packet
*sftp_pkt_init(int pkt_type
)
61 struct sftp_packet
*pkt
;
62 pkt
= snew(struct sftp_packet
);
67 sftp_pkt_addbyte(pkt
, (unsigned char) pkt_type
);
70 static void sftp_pkt_addbool(struct sftp_packet
*pkt
, unsigned char value
)
72 sftp_pkt_adddata(pkt
, &value
, 1);
74 static void sftp_pkt_adduint32(struct sftp_packet
*pkt
,
79 sftp_pkt_adddata(pkt
, x
, 4);
81 static void sftp_pkt_adduint64(struct sftp_packet
*pkt
, uint64 value
)
84 PUT_32BIT(x
, value
.hi
);
85 PUT_32BIT(x
+ 4, value
.lo
);
86 sftp_pkt_adddata(pkt
, x
, 8);
88 static void sftp_pkt_addstring_start(struct sftp_packet
*pkt
)
90 sftp_pkt_adduint32(pkt
, 0);
91 pkt
->savedpos
= pkt
->length
;
93 static void sftp_pkt_addstring_str(struct sftp_packet
*pkt
, char *data
)
95 sftp_pkt_adddata(pkt
, data
, strlen(data
));
96 PUT_32BIT(pkt
->data
+ pkt
->savedpos
- 4, pkt
->length
- pkt
->savedpos
);
98 static void sftp_pkt_addstring_data(struct sftp_packet
*pkt
,
101 sftp_pkt_adddata(pkt
, data
, len
);
102 PUT_32BIT(pkt
->data
+ pkt
->savedpos
- 4, pkt
->length
- pkt
->savedpos
);
104 static void sftp_pkt_addstring(struct sftp_packet
*pkt
, char *data
)
106 sftp_pkt_addstring_start(pkt
);
107 sftp_pkt_addstring_str(pkt
, data
);
109 static void sftp_pkt_addattrs(struct sftp_packet
*pkt
, struct fxp_attrs attrs
)
111 sftp_pkt_adduint32(pkt
, attrs
.flags
);
112 if (attrs
.flags
& SSH_FILEXFER_ATTR_SIZE
) {
113 sftp_pkt_adduint32(pkt
, attrs
.size
.hi
);
114 sftp_pkt_adduint32(pkt
, attrs
.size
.lo
);
116 if (attrs
.flags
& SSH_FILEXFER_ATTR_UIDGID
) {
117 sftp_pkt_adduint32(pkt
, attrs
.uid
);
118 sftp_pkt_adduint32(pkt
, attrs
.gid
);
120 if (attrs
.flags
& SSH_FILEXFER_ATTR_PERMISSIONS
) {
121 sftp_pkt_adduint32(pkt
, attrs
.permissions
);
123 if (attrs
.flags
& SSH_FILEXFER_ATTR_ACMODTIME
) {
124 sftp_pkt_adduint32(pkt
, attrs
.atime
);
125 sftp_pkt_adduint32(pkt
, attrs
.mtime
);
127 if (attrs
.flags
& SSH_FILEXFER_ATTR_EXTENDED
) {
129 * We currently don't support sending any extended
135 /* ----------------------------------------------------------------------
136 * SFTP packet decode functions.
139 static unsigned char sftp_pkt_getbyte(struct sftp_packet
*pkt
)
142 if (pkt
->length
- pkt
->savedpos
< 1)
143 return 0; /* arrgh, no way to decline (FIXME?) */
144 value
= (unsigned char) pkt
->data
[pkt
->savedpos
];
148 static unsigned long sftp_pkt_getuint32(struct sftp_packet
*pkt
)
151 if (pkt
->length
- pkt
->savedpos
< 4)
152 return 0; /* arrgh, no way to decline (FIXME?) */
153 value
= GET_32BIT(pkt
->data
+ pkt
->savedpos
);
157 static void sftp_pkt_getstring(struct sftp_packet
*pkt
,
158 char **p
, int *length
)
161 if (pkt
->length
- pkt
->savedpos
< 4)
163 *length
= GET_32BIT(pkt
->data
+ pkt
->savedpos
);
165 if (pkt
->length
- pkt
->savedpos
< *length
)
167 *p
= pkt
->data
+ pkt
->savedpos
;
168 pkt
->savedpos
+= *length
;
170 static struct fxp_attrs
sftp_pkt_getattrs(struct sftp_packet
*pkt
)
172 struct fxp_attrs ret
;
173 ret
.flags
= sftp_pkt_getuint32(pkt
);
174 if (ret
.flags
& SSH_FILEXFER_ATTR_SIZE
) {
175 unsigned long hi
, lo
;
176 hi
= sftp_pkt_getuint32(pkt
);
177 lo
= sftp_pkt_getuint32(pkt
);
178 ret
.size
= uint64_make(hi
, lo
);
180 if (ret
.flags
& SSH_FILEXFER_ATTR_UIDGID
) {
181 ret
.uid
= sftp_pkt_getuint32(pkt
);
182 ret
.gid
= sftp_pkt_getuint32(pkt
);
184 if (ret
.flags
& SSH_FILEXFER_ATTR_PERMISSIONS
) {
185 ret
.permissions
= sftp_pkt_getuint32(pkt
);
187 if (ret
.flags
& SSH_FILEXFER_ATTR_ACMODTIME
) {
188 ret
.atime
= sftp_pkt_getuint32(pkt
);
189 ret
.mtime
= sftp_pkt_getuint32(pkt
);
191 if (ret
.flags
& SSH_FILEXFER_ATTR_EXTENDED
) {
193 count
= sftp_pkt_getuint32(pkt
);
198 * We should try to analyse these, if we ever find one
201 sftp_pkt_getstring(pkt
, &str
, &len
);
202 sftp_pkt_getstring(pkt
, &str
, &len
);
207 static void sftp_pkt_free(struct sftp_packet
*pkt
)
214 /* ----------------------------------------------------------------------
215 * Send and receive packet functions.
217 int sftp_send(struct sftp_packet
*pkt
)
221 PUT_32BIT(x
, pkt
->length
);
222 ret
= (sftp_senddata(x
, 4) && sftp_senddata(pkt
->data
, pkt
->length
));
226 struct sftp_packet
*sftp_recv(void)
228 struct sftp_packet
*pkt
;
231 if (!sftp_recvdata(x
, 4))
234 pkt
= snew(struct sftp_packet
);
236 pkt
->length
= pkt
->maxlen
= GET_32BIT(x
);
237 pkt
->data
= snewn(pkt
->length
, char);
239 if (!sftp_recvdata(pkt
->data
, pkt
->length
)) {
244 pkt
->type
= sftp_pkt_getbyte(pkt
);
249 /* ----------------------------------------------------------------------
250 * Request ID allocation and temporary dispatch routines.
253 #define REQUEST_ID_OFFSET 256
255 struct sftp_request
{
260 static int sftp_reqcmp(void *av
, void *bv
)
262 struct sftp_request
*a
= (struct sftp_request
*)av
;
263 struct sftp_request
*b
= (struct sftp_request
*)bv
;
270 static int sftp_reqfind(void *av
, void *bv
)
272 unsigned *a
= (unsigned *) av
;
273 struct sftp_request
*b
= (struct sftp_request
*)bv
;
281 static tree234
*sftp_requests
;
283 static struct sftp_request
*sftp_alloc_request(void)
285 const unsigned CHANNEL_NUMBER_OFFSET
= 256;
286 unsigned low
, high
, mid
;
288 struct sftp_request
*r
;
290 if (sftp_requests
== NULL
)
291 sftp_requests
= newtree234(sftp_reqcmp
);
294 * First-fit allocation of request IDs: always pick the lowest
295 * unused one. To do this, binary-search using the counted
296 * B-tree to find the largest ID which is in a contiguous
297 * sequence from the beginning. (Precisely everything in that
298 * sequence must have ID equal to its tree index plus
299 * SEQUENCE_NUMBER_OFFSET.)
301 tsize
= count234(sftp_requests
);
305 while (high
- low
> 1) {
306 mid
= (high
+ low
) / 2;
307 r
= index234(sftp_requests
, mid
);
308 if (r
->id
== mid
+ REQUEST_ID_OFFSET
)
309 low
= mid
; /* this one is fine */
311 high
= mid
; /* this one is past it */
314 * Now low points to either -1, or the tree index of the
315 * largest ID in the initial sequence.
318 unsigned i
= low
+ 1 + REQUEST_ID_OFFSET
;
319 assert(NULL
== find234(sftp_requests
, &i
, sftp_reqfind
));
323 * So the request ID we need to create is
324 * low + 1 + REQUEST_ID_OFFSET.
326 r
= snew(struct sftp_request
);
327 r
->id
= low
+ 1 + REQUEST_ID_OFFSET
;
329 add234(sftp_requests
, r
);
333 void sftp_register(struct sftp_request
*req
)
338 struct sftp_request
*sftp_find_request(struct sftp_packet
*pktin
)
341 struct sftp_request
*req
;
344 fxp_internal_error("did not receive a valid SFTP packet\n");
348 id
= sftp_pkt_getuint32(pktin
);
349 req
= find234(sftp_requests
, &id
, sftp_reqfind
);
351 if (!req
|| !req
->registered
) {
352 fxp_internal_error("request ID mismatch\n");
353 sftp_pkt_free(pktin
);
357 del234(sftp_requests
, req
);
362 /* ----------------------------------------------------------------------
363 * String handling routines.
366 static char *mkstr(char *s
, int len
)
368 char *p
= snewn(len
+ 1, char);
374 /* ----------------------------------------------------------------------
379 * Deal with (and free) an FXP_STATUS packet. Return 1 if
380 * SSH_FX_OK, 0 if SSH_FX_EOF, and -1 for anything else (error).
381 * Also place the status into fxp_errtype.
383 static int fxp_got_status(struct sftp_packet
*pktin
)
385 static const char *const messages
[] = {
386 /* SSH_FX_OK. The only time we will display a _message_ for this
387 * is if we were expecting something other than FXP_STATUS on
388 * success, so this is actually an error message! */
389 "unexpected OK response",
391 "no such file or directory",
397 "operation unsupported",
400 if (pktin
->type
!= SSH_FXP_STATUS
) {
401 fxp_error_message
= "expected FXP_STATUS packet";
404 fxp_errtype
= sftp_pkt_getuint32(pktin
);
405 if (fxp_errtype
< 0 ||
406 fxp_errtype
>= sizeof(messages
) / sizeof(*messages
))
407 fxp_error_message
= "unknown error code";
409 fxp_error_message
= messages
[fxp_errtype
];
412 if (fxp_errtype
== SSH_FX_OK
)
414 else if (fxp_errtype
== SSH_FX_EOF
)
420 static void fxp_internal_error(char *msg
)
422 fxp_error_message
= msg
;
426 const char *fxp_error(void)
428 return fxp_error_message
;
431 int fxp_error_type(void)
437 * Perform exchange of init/version packets. Return 0 on failure.
441 struct sftp_packet
*pktout
, *pktin
;
444 pktout
= sftp_pkt_init(SSH_FXP_INIT
);
445 sftp_pkt_adduint32(pktout
, SFTP_PROTO_VERSION
);
450 fxp_internal_error("could not connect");
453 if (pktin
->type
!= SSH_FXP_VERSION
) {
454 fxp_internal_error("did not receive FXP_VERSION");
455 sftp_pkt_free(pktin
);
458 remotever
= sftp_pkt_getuint32(pktin
);
459 if (remotever
> SFTP_PROTO_VERSION
) {
461 ("remote protocol is more advanced than we support");
462 sftp_pkt_free(pktin
);
466 * In principle, this packet might also contain extension-
467 * string pairs. We should work through them and look for any
468 * we recognise. In practice we don't currently do so because
469 * we know we don't recognise _any_.
471 sftp_pkt_free(pktin
);
477 * Canonify a pathname.
479 struct sftp_request
*fxp_realpath_send(char *path
)
481 struct sftp_request
*req
= sftp_alloc_request();
482 struct sftp_packet
*pktout
;
484 pktout
= sftp_pkt_init(SSH_FXP_REALPATH
);
485 sftp_pkt_adduint32(pktout
, req
->id
);
486 sftp_pkt_addstring_start(pktout
);
487 sftp_pkt_addstring_str(pktout
, path
);
493 char *fxp_realpath_recv(struct sftp_packet
*pktin
, struct sftp_request
*req
)
497 if (pktin
->type
== SSH_FXP_NAME
) {
502 count
= sftp_pkt_getuint32(pktin
);
504 fxp_internal_error("REALPATH returned name count != 1\n");
505 sftp_pkt_free(pktin
);
508 sftp_pkt_getstring(pktin
, &path
, &len
);
510 fxp_internal_error("REALPATH returned malformed FXP_NAME\n");
511 sftp_pkt_free(pktin
);
514 path
= mkstr(path
, len
);
515 sftp_pkt_free(pktin
);
518 fxp_got_status(pktin
);
519 sftp_pkt_free(pktin
);
527 struct sftp_request
*fxp_open_send(char *path
, int type
)
529 struct sftp_request
*req
= sftp_alloc_request();
530 struct sftp_packet
*pktout
;
532 pktout
= sftp_pkt_init(SSH_FXP_OPEN
);
533 sftp_pkt_adduint32(pktout
, req
->id
);
534 sftp_pkt_addstring(pktout
, path
);
535 sftp_pkt_adduint32(pktout
, type
);
536 sftp_pkt_adduint32(pktout
, 0); /* (FIXME) empty ATTRS structure */
542 struct fxp_handle
*fxp_open_recv(struct sftp_packet
*pktin
,
543 struct sftp_request
*req
)
547 if (pktin
->type
== SSH_FXP_HANDLE
) {
549 struct fxp_handle
*handle
;
552 sftp_pkt_getstring(pktin
, &hstring
, &len
);
554 fxp_internal_error("OPEN returned malformed FXP_HANDLE\n");
555 sftp_pkt_free(pktin
);
558 handle
= snew(struct fxp_handle
);
559 handle
->hstring
= mkstr(hstring
, len
);
561 sftp_pkt_free(pktin
);
564 fxp_got_status(pktin
);
565 sftp_pkt_free(pktin
);
573 struct sftp_request
*fxp_opendir_send(char *path
)
575 struct sftp_request
*req
= sftp_alloc_request();
576 struct sftp_packet
*pktout
;
578 pktout
= sftp_pkt_init(SSH_FXP_OPENDIR
);
579 sftp_pkt_adduint32(pktout
, req
->id
);
580 sftp_pkt_addstring(pktout
, path
);
586 struct fxp_handle
*fxp_opendir_recv(struct sftp_packet
*pktin
,
587 struct sftp_request
*req
)
590 if (pktin
->type
== SSH_FXP_HANDLE
) {
592 struct fxp_handle
*handle
;
595 sftp_pkt_getstring(pktin
, &hstring
, &len
);
597 fxp_internal_error("OPENDIR returned malformed FXP_HANDLE\n");
598 sftp_pkt_free(pktin
);
601 handle
= snew(struct fxp_handle
);
602 handle
->hstring
= mkstr(hstring
, len
);
604 sftp_pkt_free(pktin
);
607 fxp_got_status(pktin
);
608 sftp_pkt_free(pktin
);
616 struct sftp_request
*fxp_close_send(struct fxp_handle
*handle
)
618 struct sftp_request
*req
= sftp_alloc_request();
619 struct sftp_packet
*pktout
;
621 pktout
= sftp_pkt_init(SSH_FXP_CLOSE
);
622 sftp_pkt_adduint32(pktout
, req
->id
);
623 sftp_pkt_addstring_start(pktout
);
624 sftp_pkt_addstring_data(pktout
, handle
->hstring
, handle
->hlen
);
627 sfree(handle
->hstring
);
633 void fxp_close_recv(struct sftp_packet
*pktin
, struct sftp_request
*req
)
636 fxp_got_status(pktin
);
637 sftp_pkt_free(pktin
);
640 struct sftp_request
*fxp_mkdir_send(char *path
)
642 struct sftp_request
*req
= sftp_alloc_request();
643 struct sftp_packet
*pktout
;
645 pktout
= sftp_pkt_init(SSH_FXP_MKDIR
);
646 sftp_pkt_adduint32(pktout
, req
->id
);
647 sftp_pkt_addstring(pktout
, path
);
648 sftp_pkt_adduint32(pktout
, 0); /* (FIXME) empty ATTRS structure */
654 int fxp_mkdir_recv(struct sftp_packet
*pktin
, struct sftp_request
*req
)
658 id
= fxp_got_status(pktin
);
659 sftp_pkt_free(pktin
);
666 struct sftp_request
*fxp_rmdir_send(char *path
)
668 struct sftp_request
*req
= sftp_alloc_request();
669 struct sftp_packet
*pktout
;
671 pktout
= sftp_pkt_init(SSH_FXP_RMDIR
);
672 sftp_pkt_adduint32(pktout
, req
->id
);
673 sftp_pkt_addstring(pktout
, path
);
679 int fxp_rmdir_recv(struct sftp_packet
*pktin
, struct sftp_request
*req
)
683 id
= fxp_got_status(pktin
);
684 sftp_pkt_free(pktin
);
691 struct sftp_request
*fxp_remove_send(char *fname
)
693 struct sftp_request
*req
= sftp_alloc_request();
694 struct sftp_packet
*pktout
;
696 pktout
= sftp_pkt_init(SSH_FXP_REMOVE
);
697 sftp_pkt_adduint32(pktout
, req
->id
);
698 sftp_pkt_addstring(pktout
, fname
);
704 int fxp_remove_recv(struct sftp_packet
*pktin
, struct sftp_request
*req
)
708 id
= fxp_got_status(pktin
);
709 sftp_pkt_free(pktin
);
716 struct sftp_request
*fxp_rename_send(char *srcfname
, char *dstfname
)
718 struct sftp_request
*req
= sftp_alloc_request();
719 struct sftp_packet
*pktout
;
721 pktout
= sftp_pkt_init(SSH_FXP_RENAME
);
722 sftp_pkt_adduint32(pktout
, req
->id
);
723 sftp_pkt_addstring(pktout
, srcfname
);
724 sftp_pkt_addstring(pktout
, dstfname
);
730 int fxp_rename_recv(struct sftp_packet
*pktin
, struct sftp_request
*req
)
734 id
= fxp_got_status(pktin
);
735 sftp_pkt_free(pktin
);
743 * Retrieve the attributes of a file. We have fxp_stat which works
744 * on filenames, and fxp_fstat which works on open file handles.
746 struct sftp_request
*fxp_stat_send(char *fname
)
748 struct sftp_request
*req
= sftp_alloc_request();
749 struct sftp_packet
*pktout
;
751 pktout
= sftp_pkt_init(SSH_FXP_STAT
);
752 sftp_pkt_adduint32(pktout
, req
->id
);
753 sftp_pkt_addstring(pktout
, fname
);
759 int fxp_stat_recv(struct sftp_packet
*pktin
, struct sftp_request
*req
,
760 struct fxp_attrs
*attrs
)
763 if (pktin
->type
== SSH_FXP_ATTRS
) {
764 *attrs
= sftp_pkt_getattrs(pktin
);
765 sftp_pkt_free(pktin
);
768 fxp_got_status(pktin
);
769 sftp_pkt_free(pktin
);
774 struct sftp_request
*fxp_fstat_send(struct fxp_handle
*handle
)
776 struct sftp_request
*req
= sftp_alloc_request();
777 struct sftp_packet
*pktout
;
779 pktout
= sftp_pkt_init(SSH_FXP_FSTAT
);
780 sftp_pkt_adduint32(pktout
, req
->id
);
781 sftp_pkt_addstring_start(pktout
);
782 sftp_pkt_addstring_data(pktout
, handle
->hstring
, handle
->hlen
);
788 int fxp_fstat_recv(struct sftp_packet
*pktin
, struct sftp_request
*req
,
789 struct fxp_attrs
*attrs
)
792 if (pktin
->type
== SSH_FXP_ATTRS
) {
793 *attrs
= sftp_pkt_getattrs(pktin
);
794 sftp_pkt_free(pktin
);
797 fxp_got_status(pktin
);
798 sftp_pkt_free(pktin
);
804 * Set the attributes of a file.
806 struct sftp_request
*fxp_setstat_send(char *fname
, struct fxp_attrs attrs
)
808 struct sftp_request
*req
= sftp_alloc_request();
809 struct sftp_packet
*pktout
;
811 pktout
= sftp_pkt_init(SSH_FXP_SETSTAT
);
812 sftp_pkt_adduint32(pktout
, req
->id
);
813 sftp_pkt_addstring(pktout
, fname
);
814 sftp_pkt_addattrs(pktout
, attrs
);
820 int fxp_setstat_recv(struct sftp_packet
*pktin
, struct sftp_request
*req
)
824 id
= fxp_got_status(pktin
);
825 sftp_pkt_free(pktin
);
832 struct sftp_request
*fxp_fsetstat_send(struct fxp_handle
*handle
,
833 struct fxp_attrs attrs
)
835 struct sftp_request
*req
= sftp_alloc_request();
836 struct sftp_packet
*pktout
;
838 pktout
= sftp_pkt_init(SSH_FXP_FSETSTAT
);
839 sftp_pkt_adduint32(pktout
, req
->id
);
840 sftp_pkt_addstring_start(pktout
);
841 sftp_pkt_addstring_data(pktout
, handle
->hstring
, handle
->hlen
);
842 sftp_pkt_addattrs(pktout
, attrs
);
848 int fxp_fsetstat_recv(struct sftp_packet
*pktin
, struct sftp_request
*req
)
852 id
= fxp_got_status(pktin
);
853 sftp_pkt_free(pktin
);
861 * Read from a file. Returns the number of bytes read, or -1 on an
862 * error, or possibly 0 if EOF. (I'm not entirely sure whether it
863 * will return 0 on EOF, or return -1 and store SSH_FX_EOF in the
864 * error indicator. It might even depend on the SFTP server.)
866 struct sftp_request
*fxp_read_send(struct fxp_handle
*handle
,
867 uint64 offset
, int len
)
869 struct sftp_request
*req
= sftp_alloc_request();
870 struct sftp_packet
*pktout
;
872 pktout
= sftp_pkt_init(SSH_FXP_READ
);
873 sftp_pkt_adduint32(pktout
, req
->id
);
874 sftp_pkt_addstring_start(pktout
);
875 sftp_pkt_addstring_data(pktout
, handle
->hstring
, handle
->hlen
);
876 sftp_pkt_adduint64(pktout
, offset
);
877 sftp_pkt_adduint32(pktout
, len
);
883 int fxp_read_recv(struct sftp_packet
*pktin
, struct sftp_request
*req
,
884 char *buffer
, int len
)
887 if (pktin
->type
== SSH_FXP_DATA
) {
891 sftp_pkt_getstring(pktin
, &str
, &rlen
);
893 if (rlen
> len
|| rlen
< 0) {
894 fxp_internal_error("READ returned more bytes than requested");
895 sftp_pkt_free(pktin
);
899 memcpy(buffer
, str
, rlen
);
900 sftp_pkt_free(pktin
);
903 fxp_got_status(pktin
);
904 sftp_pkt_free(pktin
);
910 * Read from a directory.
912 struct sftp_request
*fxp_readdir_send(struct fxp_handle
*handle
)
914 struct sftp_request
*req
= sftp_alloc_request();
915 struct sftp_packet
*pktout
;
917 pktout
= sftp_pkt_init(SSH_FXP_READDIR
);
918 sftp_pkt_adduint32(pktout
, req
->id
);
919 sftp_pkt_addstring_start(pktout
);
920 sftp_pkt_addstring_data(pktout
, handle
->hstring
, handle
->hlen
);
926 struct fxp_names
*fxp_readdir_recv(struct sftp_packet
*pktin
,
927 struct sftp_request
*req
)
930 if (pktin
->type
== SSH_FXP_NAME
) {
931 struct fxp_names
*ret
;
933 ret
= snew(struct fxp_names
);
934 ret
->nnames
= sftp_pkt_getuint32(pktin
);
935 ret
->names
= snewn(ret
->nnames
, struct fxp_name
);
936 for (i
= 0; i
< ret
->nnames
; i
++) {
939 sftp_pkt_getstring(pktin
, &str
, &len
);
940 ret
->names
[i
].filename
= mkstr(str
, len
);
941 sftp_pkt_getstring(pktin
, &str
, &len
);
942 ret
->names
[i
].longname
= mkstr(str
, len
);
943 ret
->names
[i
].attrs
= sftp_pkt_getattrs(pktin
);
945 sftp_pkt_free(pktin
);
948 fxp_got_status(pktin
);
949 sftp_pkt_free(pktin
);
955 * Write to a file. Returns 0 on error, 1 on OK.
957 struct sftp_request
*fxp_write_send(struct fxp_handle
*handle
,
958 char *buffer
, uint64 offset
, int len
)
960 struct sftp_request
*req
= sftp_alloc_request();
961 struct sftp_packet
*pktout
;
963 pktout
= sftp_pkt_init(SSH_FXP_WRITE
);
964 sftp_pkt_adduint32(pktout
, req
->id
);
965 sftp_pkt_addstring_start(pktout
);
966 sftp_pkt_addstring_data(pktout
, handle
->hstring
, handle
->hlen
);
967 sftp_pkt_adduint64(pktout
, offset
);
968 sftp_pkt_addstring_start(pktout
);
969 sftp_pkt_addstring_data(pktout
, buffer
, len
);
975 int fxp_write_recv(struct sftp_packet
*pktin
, struct sftp_request
*req
)
978 fxp_got_status(pktin
);
979 sftp_pkt_free(pktin
);
980 return fxp_errtype
== SSH_FX_OK
;
984 * Free up an fxp_names structure.
986 void fxp_free_names(struct fxp_names
*names
)
990 for (i
= 0; i
< names
->nnames
; i
++) {
991 sfree(names
->names
[i
].filename
);
992 sfree(names
->names
[i
].longname
);
999 * Duplicate an fxp_name structure.
1001 struct fxp_name
*fxp_dup_name(struct fxp_name
*name
)
1003 struct fxp_name
*ret
;
1004 ret
= snew(struct fxp_name
);
1005 ret
->filename
= dupstr(name
->filename
);
1006 ret
->longname
= dupstr(name
->longname
);
1007 ret
->attrs
= name
->attrs
; /* structure copy */
1012 * Free up an fxp_name structure.
1014 void fxp_free_name(struct fxp_name
*name
)
1016 sfree(name
->filename
);
1017 sfree(name
->longname
);