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);
360 /* ----------------------------------------------------------------------
361 * String handling routines.
364 static char *mkstr(char *s, int len)
366 char *p = snewn(len + 1, char);
372 /* ----------------------------------------------------------------------
377 * Deal with (and free) an FXP_STATUS packet. Return 1 if
378 * SSH_FX_OK, 0 if SSH_FX_EOF, and -1 for anything else (error).
379 * Also place the status into fxp_errtype.
381 static int fxp_got_status(struct sftp_packet *pktin)
383 static const char *const messages[] = {
384 /* SSH_FX_OK. The only time we will display a _message_ for this
385 * is if we were expecting something other than FXP_STATUS on
386 * success, so this is actually an error message! */
387 "unexpected OK response",
389 "no such file or directory",
395 "operation unsupported",
398 if (pktin->type != SSH_FXP_STATUS) {
399 fxp_error_message = "expected FXP_STATUS packet";
402 fxp_errtype = sftp_pkt_getuint32(pktin);
403 if (fxp_errtype < 0 ||
404 fxp_errtype >= sizeof(messages) / sizeof(*messages))
405 fxp_error_message = "unknown error code";
407 fxp_error_message = messages[fxp_errtype];
410 if (fxp_errtype == SSH_FX_OK)
412 else if (fxp_errtype == SSH_FX_EOF)
418 static void fxp_internal_error(char *msg)
420 fxp_error_message = msg;
424 const char *fxp_error(void)
426 return fxp_error_message;
429 int fxp_error_type(void)
435 * Perform exchange of init/version packets. Return 0 on failure.
439 struct sftp_packet *pktout, *pktin;
442 pktout = sftp_pkt_init(SSH_FXP_INIT);
443 sftp_pkt_adduint32(pktout, SFTP_PROTO_VERSION);
448 fxp_internal_error("could not connect");
451 if (pktin->type != SSH_FXP_VERSION) {
452 fxp_internal_error("did not receive FXP_VERSION");
453 sftp_pkt_free(pktin);
456 remotever = sftp_pkt_getuint32(pktin);
457 if (remotever > SFTP_PROTO_VERSION) {
459 ("remote protocol is more advanced than we support");
460 sftp_pkt_free(pktin);
464 * In principle, this packet might also contain extension-
465 * string pairs. We should work through them and look for any
466 * we recognise. In practice we don't currently do so because
467 * we know we don't recognise _any_.
469 sftp_pkt_free(pktin);
475 * Canonify a pathname.
477 struct sftp_request *fxp_realpath_send(char *path)
479 struct sftp_request *req = sftp_alloc_request();
480 struct sftp_packet *pktout;
482 pktout = sftp_pkt_init(SSH_FXP_REALPATH);
483 sftp_pkt_adduint32(pktout, req->id);
484 sftp_pkt_addstring_start(pktout);
485 sftp_pkt_addstring_str(pktout, path);
491 char *fxp_realpath_recv(struct sftp_packet *pktin)
493 if (pktin->type == SSH_FXP_NAME) {
498 count = sftp_pkt_getuint32(pktin);
500 fxp_internal_error("REALPATH returned name count != 1\n");
501 sftp_pkt_free(pktin);
504 sftp_pkt_getstring(pktin, &path, &len);
506 fxp_internal_error("REALPATH returned malformed FXP_NAME\n");
507 sftp_pkt_free(pktin);
510 path = mkstr(path, len);
511 sftp_pkt_free(pktin);
514 fxp_got_status(pktin);
515 sftp_pkt_free(pktin);
523 struct sftp_request *fxp_open_send(char *path, int type)
525 struct sftp_request *req = sftp_alloc_request();
526 struct sftp_packet *pktout;
528 pktout = sftp_pkt_init(SSH_FXP_OPEN);
529 sftp_pkt_adduint32(pktout, req->id);
530 sftp_pkt_addstring(pktout, path);
531 sftp_pkt_adduint32(pktout, type);
532 sftp_pkt_adduint32(pktout, 0); /* (FIXME) empty ATTRS structure */
538 struct fxp_handle *fxp_open_recv(struct sftp_packet *pktin)
540 if (pktin->type == SSH_FXP_HANDLE) {
542 struct fxp_handle *handle;
545 sftp_pkt_getstring(pktin, &hstring, &len);
547 fxp_internal_error("OPEN returned malformed FXP_HANDLE\n");
548 sftp_pkt_free(pktin);
551 handle = snew(struct fxp_handle);
552 handle->hstring = mkstr(hstring, len);
554 sftp_pkt_free(pktin);
557 fxp_got_status(pktin);
558 sftp_pkt_free(pktin);
566 struct sftp_request *fxp_opendir_send(char *path)
568 struct sftp_request *req = sftp_alloc_request();
569 struct sftp_packet *pktout;
571 pktout = sftp_pkt_init(SSH_FXP_OPENDIR);
572 sftp_pkt_adduint32(pktout, req->id);
573 sftp_pkt_addstring(pktout, path);
579 struct fxp_handle *fxp_opendir_recv(struct sftp_packet *pktin)
581 if (pktin->type == SSH_FXP_HANDLE) {
583 struct fxp_handle *handle;
586 sftp_pkt_getstring(pktin, &hstring, &len);
588 fxp_internal_error("OPENDIR returned malformed FXP_HANDLE\n");
589 sftp_pkt_free(pktin);
592 handle = snew(struct fxp_handle);
593 handle->hstring = mkstr(hstring, len);
595 sftp_pkt_free(pktin);
598 fxp_got_status(pktin);
599 sftp_pkt_free(pktin);
607 struct sftp_request *fxp_close_send(struct fxp_handle *handle)
609 struct sftp_request *req = sftp_alloc_request();
610 struct sftp_packet *pktout;
612 pktout = sftp_pkt_init(SSH_FXP_CLOSE);
613 sftp_pkt_adduint32(pktout, req->id);
614 sftp_pkt_addstring_start(pktout);
615 sftp_pkt_addstring_data(pktout, handle->hstring, handle->hlen);
618 sfree(handle->hstring);
624 void fxp_close_recv(struct sftp_packet *pktin)
626 fxp_got_status(pktin);
627 sftp_pkt_free(pktin);
630 struct sftp_request *fxp_mkdir_send(char *path)
632 struct sftp_request *req = sftp_alloc_request();
633 struct sftp_packet *pktout;
635 pktout = sftp_pkt_init(SSH_FXP_MKDIR);
636 sftp_pkt_adduint32(pktout, req->id);
637 sftp_pkt_addstring(pktout, path);
638 sftp_pkt_adduint32(pktout, 0); /* (FIXME) empty ATTRS structure */
644 int fxp_mkdir_recv(struct sftp_packet *pktin)
646 int id = fxp_got_status(pktin);
647 sftp_pkt_free(pktin);
654 struct sftp_request *fxp_rmdir_send(char *path)
656 struct sftp_request *req = sftp_alloc_request();
657 struct sftp_packet *pktout;
659 pktout = sftp_pkt_init(SSH_FXP_RMDIR);
660 sftp_pkt_adduint32(pktout, req->id);
661 sftp_pkt_addstring(pktout, path);
667 int fxp_rmdir_recv(struct sftp_packet *pktin)
669 int id = fxp_got_status(pktin);
670 sftp_pkt_free(pktin);
677 struct sftp_request *fxp_remove_send(char *fname)
679 struct sftp_request *req = sftp_alloc_request();
680 struct sftp_packet *pktout;
682 pktout = sftp_pkt_init(SSH_FXP_REMOVE);
683 sftp_pkt_adduint32(pktout, req->id);
684 sftp_pkt_addstring(pktout, fname);
690 int fxp_remove_recv(struct sftp_packet *pktin)
692 int id = fxp_got_status(pktin);
693 sftp_pkt_free(pktin);
700 struct sftp_request *fxp_rename_send(char *srcfname, char *dstfname)
702 struct sftp_request *req = sftp_alloc_request();
703 struct sftp_packet *pktout;
705 pktout = sftp_pkt_init(SSH_FXP_RENAME);
706 sftp_pkt_adduint32(pktout, req->id);
707 sftp_pkt_addstring(pktout, srcfname);
708 sftp_pkt_addstring(pktout, dstfname);
714 int fxp_rename_recv(struct sftp_packet *pktin)
716 int id = fxp_got_status(pktin);
717 sftp_pkt_free(pktin);
725 * Retrieve the attributes of a file. We have fxp_stat which works
726 * on filenames, and fxp_fstat which works on open file handles.
728 struct sftp_request *fxp_stat_send(char *fname)
730 struct sftp_request *req = sftp_alloc_request();
731 struct sftp_packet *pktout;
733 pktout = sftp_pkt_init(SSH_FXP_STAT);
734 sftp_pkt_adduint32(pktout, req->id);
735 sftp_pkt_addstring(pktout, fname);
741 int fxp_stat_recv(struct sftp_packet *pktin, struct fxp_attrs *attrs)
743 if (pktin->type == SSH_FXP_ATTRS) {
744 *attrs = sftp_pkt_getattrs(pktin);
745 sftp_pkt_free(pktin);
748 fxp_got_status(pktin);
749 sftp_pkt_free(pktin);
754 struct sftp_request *fxp_fstat_send(struct fxp_handle *handle)
756 struct sftp_request *req = sftp_alloc_request();
757 struct sftp_packet *pktout;
759 pktout = sftp_pkt_init(SSH_FXP_FSTAT);
760 sftp_pkt_adduint32(pktout, req->id);
761 sftp_pkt_addstring_start(pktout);
762 sftp_pkt_addstring_data(pktout, handle->hstring, handle->hlen);
768 int fxp_fstat_recv(struct sftp_packet *pktin,
769 struct fxp_attrs *attrs)
771 if (pktin->type == SSH_FXP_ATTRS) {
772 *attrs = sftp_pkt_getattrs(pktin);
773 sftp_pkt_free(pktin);
776 fxp_got_status(pktin);
777 sftp_pkt_free(pktin);
783 * Set the attributes of a file.
785 struct sftp_request *fxp_setstat_send(char *fname, struct fxp_attrs attrs)
787 struct sftp_request *req = sftp_alloc_request();
788 struct sftp_packet *pktout;
790 pktout = sftp_pkt_init(SSH_FXP_SETSTAT);
791 sftp_pkt_adduint32(pktout, req->id);
792 sftp_pkt_addstring(pktout, fname);
793 sftp_pkt_addattrs(pktout, attrs);
799 int fxp_setstat_recv(struct sftp_packet *pktin)
801 int id = fxp_got_status(pktin);
802 sftp_pkt_free(pktin);
809 struct sftp_request *fxp_fsetstat_send(struct fxp_handle *handle,
810 struct fxp_attrs attrs)
812 struct sftp_request *req = sftp_alloc_request();
813 struct sftp_packet *pktout;
815 pktout = sftp_pkt_init(SSH_FXP_FSETSTAT);
816 sftp_pkt_adduint32(pktout, req->id);
817 sftp_pkt_addstring_start(pktout);
818 sftp_pkt_addstring_data(pktout, handle->hstring, handle->hlen);
819 sftp_pkt_addattrs(pktout, attrs);
825 int fxp_fsetstat_recv(struct sftp_packet *pktin)
827 int id = fxp_got_status(pktin);
828 sftp_pkt_free(pktin);
836 * Read from a file. Returns the number of bytes read, or -1 on an
837 * error, or possibly 0 if EOF. (I'm not entirely sure whether it
838 * will return 0 on EOF, or return -1 and store SSH_FX_EOF in the
839 * error indicator. It might even depend on the SFTP server.)
841 struct sftp_request *fxp_read_send(struct fxp_handle *handle,
842 uint64 offset, int len)
844 struct sftp_request *req = sftp_alloc_request();
845 struct sftp_packet *pktout;
847 pktout = sftp_pkt_init(SSH_FXP_READ);
848 sftp_pkt_adduint32(pktout, req->id);
849 sftp_pkt_addstring_start(pktout);
850 sftp_pkt_addstring_data(pktout, handle->hstring, handle->hlen);
851 sftp_pkt_adduint64(pktout, offset);
852 sftp_pkt_adduint32(pktout, len);
858 int fxp_read_recv(struct sftp_packet *pktin, char *buffer, int len)
860 if (pktin->type == SSH_FXP_DATA) {
864 sftp_pkt_getstring(pktin, &str, &rlen);
866 if (rlen > len || rlen < 0) {
867 fxp_internal_error("READ returned more bytes than requested");
868 sftp_pkt_free(pktin);
872 memcpy(buffer, str, rlen);
873 sftp_pkt_free(pktin);
876 fxp_got_status(pktin);
877 sftp_pkt_free(pktin);
883 * Read from a directory.
885 struct sftp_request *fxp_readdir_send(struct fxp_handle *handle)
887 struct sftp_request *req = sftp_alloc_request();
888 struct sftp_packet *pktout;
890 pktout = sftp_pkt_init(SSH_FXP_READDIR);
891 sftp_pkt_adduint32(pktout, req->id);
892 sftp_pkt_addstring_start(pktout);
893 sftp_pkt_addstring_data(pktout, handle->hstring, handle->hlen);
899 struct fxp_names *fxp_readdir_recv(struct sftp_packet *pktin)
901 if (pktin->type == SSH_FXP_NAME) {
902 struct fxp_names *ret;
904 ret = snew(struct fxp_names);
905 ret->nnames = sftp_pkt_getuint32(pktin);
906 ret->names = snewn(ret->nnames, struct fxp_name);
907 for (i = 0; i < ret->nnames; i++) {
910 sftp_pkt_getstring(pktin, &str, &len);
911 ret->names[i].filename = mkstr(str, len);
912 sftp_pkt_getstring(pktin, &str, &len);
913 ret->names[i].longname = mkstr(str, len);
914 ret->names[i].attrs = sftp_pkt_getattrs(pktin);
916 sftp_pkt_free(pktin);
919 fxp_got_status(pktin);
920 sftp_pkt_free(pktin);
926 * Write to a file. Returns 0 on error, 1 on OK.
928 struct sftp_request *fxp_write_send(struct fxp_handle *handle,
929 char *buffer, uint64 offset, int len)
931 struct sftp_request *req = sftp_alloc_request();
932 struct sftp_packet *pktout;
934 pktout = sftp_pkt_init(SSH_FXP_WRITE);
935 sftp_pkt_adduint32(pktout, req->id);
936 sftp_pkt_addstring_start(pktout);
937 sftp_pkt_addstring_data(pktout, handle->hstring, handle->hlen);
938 sftp_pkt_adduint64(pktout, offset);
939 sftp_pkt_addstring_start(pktout);
940 sftp_pkt_addstring_data(pktout, buffer, len);
946 int fxp_write_recv(struct sftp_packet *pktin)
948 fxp_got_status(pktin);
949 sftp_pkt_free(pktin);
950 return fxp_errtype == SSH_FX_OK;
954 * Free up an fxp_names structure.
956 void fxp_free_names(struct fxp_names *names)
960 for (i = 0; i < names->nnames; i++) {
961 sfree(names->names[i].filename);
962 sfree(names->names[i].longname);
969 * Duplicate an fxp_name structure.
971 struct fxp_name *fxp_dup_name(struct fxp_name *name)
973 struct fxp_name *ret;
974 ret = snew(struct fxp_name);
975 ret->filename = dupstr(name->filename);
976 ret->longname = dupstr(name->longname);
977 ret->attrs = name->attrs; /* structure copy */
982 * Free up an fxp_name structure.
984 void fxp_free_name(struct fxp_name *name)
986 sfree(name->filename);
987 sfree(name->longname);