4c7f0d61 |
1 | /* |
2 | * sftp.c: SFTP generic client code. |
3 | */ |
4 | |
5 | #include <stdio.h> |
6 | #include <stdlib.h> |
7 | #include <assert.h> |
8 | #include <unistd.h> |
9 | |
10 | #include "int64.h" |
11 | #include "sftp.h" |
12 | |
13 | #define smalloc malloc |
14 | #define srealloc realloc |
15 | #define sfree free |
16 | |
17 | #define GET_32BIT(cp) \ |
18 | (((unsigned long)(unsigned char)(cp)[0] << 24) | \ |
19 | ((unsigned long)(unsigned char)(cp)[1] << 16) | \ |
20 | ((unsigned long)(unsigned char)(cp)[2] << 8) | \ |
21 | ((unsigned long)(unsigned char)(cp)[3])) |
22 | |
23 | #define PUT_32BIT(cp, value) { \ |
24 | (cp)[0] = (unsigned char)((value) >> 24); \ |
25 | (cp)[1] = (unsigned char)((value) >> 16); \ |
26 | (cp)[2] = (unsigned char)((value) >> 8); \ |
27 | (cp)[3] = (unsigned char)(value); } |
28 | |
29 | struct sftp_packet { |
30 | char *data; |
31 | int length, maxlen; |
32 | int savedpos; |
33 | int type; |
34 | }; |
35 | |
36 | /* ---------------------------------------------------------------------- |
37 | * SFTP packet construction functions. |
38 | */ |
39 | static void sftp_pkt_ensure(struct sftp_packet *pkt, int length) { |
40 | if (pkt->maxlen < length) { |
41 | pkt->maxlen = length + 256; |
42 | pkt->data = srealloc(pkt->data, pkt->maxlen); |
43 | } |
44 | } |
45 | static void sftp_pkt_adddata(struct sftp_packet *pkt, void *data, int len) { |
46 | pkt->length += len; |
47 | sftp_pkt_ensure(pkt, pkt->length); |
48 | memcpy(pkt->data+pkt->length-len, data, len); |
49 | } |
50 | static void sftp_pkt_addbyte(struct sftp_packet *pkt, unsigned char byte) { |
51 | sftp_pkt_adddata(pkt, &byte, 1); |
52 | } |
53 | static struct sftp_packet *sftp_pkt_init(int pkt_type) { |
54 | struct sftp_packet *pkt; |
55 | pkt = smalloc(sizeof(struct sftp_packet)); |
56 | pkt->data = NULL; |
57 | pkt->savedpos = -1; |
58 | pkt->length = 0; |
59 | pkt->maxlen = 0; |
60 | sftp_pkt_addbyte(pkt, (unsigned char)pkt_type); |
61 | return pkt; |
62 | } |
63 | static void sftp_pkt_addbool(struct sftp_packet *pkt, unsigned char value) { |
64 | sftp_pkt_adddata(pkt, &value, 1); |
65 | } |
66 | static void sftp_pkt_adduint32(struct sftp_packet *pkt, unsigned long value) { |
67 | unsigned char x[4]; |
68 | PUT_32BIT(x, value); |
69 | sftp_pkt_adddata(pkt, x, 4); |
70 | } |
71 | static void sftp_pkt_adduint64(struct sftp_packet *pkt, uint64 value) { |
72 | unsigned char x[8]; |
73 | PUT_32BIT(x, value.hi); |
74 | PUT_32BIT(x+4, value.lo); |
75 | sftp_pkt_adddata(pkt, x, 8); |
76 | } |
77 | static void sftp_pkt_addstring_start(struct sftp_packet *pkt) { |
78 | sftp_pkt_adduint32(pkt, 0); |
79 | pkt->savedpos = pkt->length; |
80 | } |
81 | static void sftp_pkt_addstring_str(struct sftp_packet *pkt, char *data) { |
82 | sftp_pkt_adddata(pkt, data, strlen(data)); |
83 | PUT_32BIT(pkt->data + pkt->savedpos - 4, |
84 | pkt->length - pkt->savedpos); |
85 | } |
86 | static void sftp_pkt_addstring_data(struct sftp_packet *pkt, |
87 | char *data, int len) { |
88 | sftp_pkt_adddata(pkt, data, len); |
89 | PUT_32BIT(pkt->data + pkt->savedpos - 4, |
90 | pkt->length - pkt->savedpos); |
91 | } |
92 | static void sftp_pkt_addstring(struct sftp_packet *pkt, char *data) { |
93 | sftp_pkt_addstring_start(pkt); |
94 | sftp_pkt_addstring_str(pkt, data); |
95 | } |
96 | |
97 | /* ---------------------------------------------------------------------- |
98 | * SFTP packet decode functions. |
99 | */ |
100 | |
101 | static unsigned char sftp_pkt_getbyte(struct sftp_packet *pkt) { |
102 | unsigned long value; |
103 | if (pkt->length - pkt->savedpos < 1) |
104 | return 0; /* arrgh, no way to decline (FIXME?) */ |
105 | value = (unsigned char) pkt->data[pkt->savedpos]; |
106 | pkt->savedpos++; |
107 | return value; |
108 | } |
109 | static unsigned long sftp_pkt_getuint32(struct sftp_packet *pkt) { |
110 | unsigned long value; |
111 | if (pkt->length - pkt->savedpos < 4) |
112 | return 0; /* arrgh, no way to decline (FIXME?) */ |
113 | value = GET_32BIT(pkt->data+pkt->savedpos); |
114 | pkt->savedpos += 4; |
115 | return value; |
116 | } |
117 | static void sftp_pkt_getstring(struct sftp_packet *pkt, |
118 | char **p, int *length) { |
119 | *p = NULL; |
120 | if (pkt->length - pkt->savedpos < 4) |
121 | return; |
122 | *length = GET_32BIT(pkt->data+pkt->savedpos); |
123 | pkt->savedpos += 4; |
124 | if (pkt->length - pkt->savedpos < *length) |
125 | return; |
126 | *p = pkt->data+pkt->savedpos; |
127 | pkt->savedpos += *length; |
128 | } |
129 | static struct fxp_attrs sftp_pkt_getattrs(struct sftp_packet *pkt) { |
130 | struct fxp_attrs ret; |
131 | ret.flags = sftp_pkt_getuint32(pkt); |
132 | if (ret.flags & SSH_FILEXFER_ATTR_SIZE) { |
133 | unsigned long hi, lo; |
134 | hi = sftp_pkt_getuint32(pkt); |
135 | lo = sftp_pkt_getuint32(pkt); |
136 | ret.size = uint64_make(hi, lo); |
137 | } |
138 | if (ret.flags & SSH_FILEXFER_ATTR_UIDGID) { |
139 | ret.uid = sftp_pkt_getuint32(pkt); |
140 | ret.gid = sftp_pkt_getuint32(pkt); |
141 | } |
142 | if (ret.flags & SSH_FILEXFER_ATTR_PERMISSIONS) { |
143 | ret.permissions = sftp_pkt_getuint32(pkt); |
144 | } |
145 | if (ret.flags & SSH_FILEXFER_ATTR_ACMODTIME) { |
146 | ret.atime = sftp_pkt_getuint32(pkt); |
147 | ret.mtime = sftp_pkt_getuint32(pkt); |
148 | } |
149 | if (ret.flags & SSH_FILEXFER_ATTR_EXTENDED) { |
150 | int count; |
151 | count = sftp_pkt_getuint32(pkt); |
152 | while (count--) { |
153 | char *str; |
154 | int len; |
155 | /* |
156 | * We should try to analyse these, if we ever find one |
157 | * we recognise. |
158 | */ |
159 | sftp_pkt_getstring(pkt, &str, &len); |
160 | sftp_pkt_getstring(pkt, &str, &len); |
161 | } |
162 | } |
163 | return ret; |
164 | } |
165 | static void sftp_pkt_free(struct sftp_packet *pkt) { |
166 | if (pkt->data) sfree(pkt->data); |
167 | sfree(pkt); |
168 | } |
169 | |
170 | /* ---------------------------------------------------------------------- |
171 | * Send and receive packet functions. FIXME: change for PuTTY. |
172 | */ |
173 | int tossh, fromssh; |
174 | int io_init(void) { |
175 | int to[2], from[2]; |
176 | int pid; |
177 | |
178 | assert(pipe(to) == 0); |
179 | assert(pipe(from) == 0); |
180 | pid = fork(); |
181 | assert(pid >= 0); |
182 | if (pid == 0) { |
183 | /* We are child. Dup one end of each pipe to our std[io], |
184 | * close other end, exec. */ |
185 | close(0); dup2(to[0], 0); close(to[1]); |
186 | close(1); dup2(from[1], 1); close(from[0]); |
187 | execl("/home/simon/src/openssh/openssh_cvs/prefix/bin/ssh", "ssh", "-2", "simon@localhost", "-s", "sftp", NULL); |
f9e162aa |
188 | //execl("/root/ssh-research/ssh-2.4.0/apps/ssh/sftp-server2", "sftp-server2", NULL); |
189 | //execl("/usr/lib/sftp-server", "sftp-server", NULL); |
4c7f0d61 |
190 | assert(0); /* bomb out if not */ |
191 | } else { |
192 | /* We are parent. Close wrong end of each pipe, assign to glob vars. */ |
193 | close(to[0]); tossh = to[1]; |
194 | close(from[1]); fromssh = from[0]; |
195 | } |
196 | } |
197 | int io_finish(void) { |
198 | int pid, status; |
199 | close(tossh); |
200 | close(fromssh); |
201 | pid = wait(&status); |
202 | } |
203 | int sftp_send(struct sftp_packet *pkt) { |
204 | char x[4]; |
205 | PUT_32BIT(x, pkt->length); |
206 | assert(4 == write(tossh, x, 4)); |
207 | assert(pkt->length = write(tossh, pkt->data, pkt->length)); |
208 | sftp_pkt_free(pkt); |
209 | } |
210 | struct sftp_packet *sftp_recv(void) { |
211 | struct sftp_packet *pkt; |
212 | char x[4]; |
213 | int p, ret; |
214 | |
215 | for (p = 0; p < 4 ;) { |
216 | ret = read(fromssh, x+p, 4-p); |
217 | assert(ret >= 0); |
218 | if (ret == 0) |
219 | return NULL; |
220 | p += ret; |
221 | } |
222 | |
223 | pkt = smalloc(sizeof(struct sftp_packet)); |
224 | pkt->savedpos = 0; |
225 | pkt->length = pkt->maxlen = GET_32BIT(x); |
226 | pkt->data = smalloc(pkt->length); |
227 | |
228 | for (p = 0; p < pkt->length ;) { |
229 | ret = read(fromssh, pkt->data+p, pkt->length-p); |
230 | assert(ret >= 0); |
231 | if (ret == 0) { |
232 | sftp_pkt_free(pkt); |
233 | return NULL; |
234 | } |
235 | p += ret; |
236 | } |
237 | |
238 | pkt->type = sftp_pkt_getbyte(pkt); |
239 | |
240 | return pkt; |
241 | } |
242 | |
243 | /* ---------------------------------------------------------------------- |
244 | * String handling routines. |
245 | */ |
246 | |
247 | static char *mkstr(char *s, int len) { |
248 | char *p = smalloc(len+1); |
249 | memcpy(p, s, len); |
250 | p[len] = '\0'; |
251 | return p; |
252 | } |
253 | |
254 | /* ---------------------------------------------------------------------- |
255 | * SFTP primitives. |
256 | */ |
257 | |
258 | static const char *fxp_error_message; |
259 | static int fxp_errtype; |
260 | |
261 | /* |
262 | * Deal with (and free) an FXP_STATUS packet. Return 1 if |
263 | * SSH_FX_OK, 0 if SSH_FX_EOF, and -1 for anything else (error). |
264 | * Also place the status into fxp_errtype. |
265 | */ |
266 | static int fxp_got_status(struct sftp_packet *pktin) { |
267 | static const char *const messages[] = { |
268 | /* SSH_FX_OK. The only time we will display a _message_ for this |
269 | * is if we were expecting something other than FXP_STATUS on |
270 | * success, so this is actually an error message! */ |
271 | "unexpected OK response", |
272 | "end of file", |
273 | "no such file or directory", |
274 | "permission denied", |
275 | "failure", |
276 | "bad message", |
277 | "no connection", |
278 | "connection lost", |
279 | "operation unsupported", |
280 | }; |
281 | |
282 | if (pktin->type != SSH_FXP_STATUS) { |
283 | fxp_error_message = "expected FXP_STATUS packet"; |
284 | fxp_errtype = -1; |
285 | } else { |
286 | fxp_errtype = sftp_pkt_getuint32(pktin); |
287 | if (fxp_errtype < 0 || |
288 | fxp_errtype >= sizeof(messages)/sizeof(*messages)) |
289 | fxp_error_message = "unknown error code"; |
290 | else |
291 | fxp_error_message = messages[fxp_errtype]; |
292 | } |
293 | |
294 | if (fxp_errtype == SSH_FX_OK) |
295 | return 1; |
296 | else if (fxp_errtype == SSH_FX_EOF) |
297 | return 0; |
298 | else |
299 | return -1; |
300 | } |
301 | |
302 | static int fxp_internal_error(char *msg) { |
303 | fxp_error_message = msg; |
304 | fxp_errtype = -1; |
305 | } |
306 | |
307 | const char *fxp_error(void) { |
308 | return fxp_error_message; |
309 | } |
310 | |
311 | int fxp_error_type(void) { |
312 | return fxp_errtype; |
313 | } |
314 | |
315 | /* |
316 | * Perform exchange of init/version packets. Return 0 on failure. |
317 | */ |
318 | int fxp_init(void) { |
319 | struct sftp_packet *pktout, *pktin; |
320 | int remotever; |
321 | |
322 | pktout = sftp_pkt_init(SSH_FXP_INIT); |
323 | sftp_pkt_adduint32(pktout, SFTP_PROTO_VERSION); |
324 | sftp_send(pktout); |
325 | |
326 | pktin = sftp_recv(); |
327 | if (pktin->type != SSH_FXP_VERSION) { |
328 | fxp_internal_error("did not receive FXP_VERSION"); |
329 | return 0; |
330 | } |
331 | remotever = sftp_pkt_getuint32(pktin); |
332 | if (remotever > SFTP_PROTO_VERSION) { |
333 | fxp_internal_error("remote protocol is more advanced than we support"); |
334 | return 0; |
335 | } |
336 | /* |
337 | * In principle, this packet might also contain extension- |
338 | * string pairs. We should work through them and look for any |
339 | * we recognise. In practice we don't currently do so because |
340 | * we know we don't recognise _any_. |
341 | */ |
342 | sftp_pkt_free(pktin); |
343 | |
344 | return 1; |
345 | } |
346 | |
347 | /* |
f9e162aa |
348 | * Canonify a pathname. |
4c7f0d61 |
349 | */ |
f9e162aa |
350 | char *fxp_realpath(char *path) { |
4c7f0d61 |
351 | struct sftp_packet *pktin, *pktout; |
352 | int id; |
353 | |
354 | pktout = sftp_pkt_init(SSH_FXP_REALPATH); |
355 | sftp_pkt_adduint32(pktout, 0x123); /* request id */ |
356 | sftp_pkt_addstring_start(pktout); |
357 | sftp_pkt_addstring_str(pktout, path); |
4c7f0d61 |
358 | sftp_send(pktout); |
359 | pktin = sftp_recv(); |
360 | id = sftp_pkt_getuint32(pktin); |
361 | if (id != 0x123) { |
362 | fxp_internal_error("request ID mismatch\n"); |
363 | return NULL; |
364 | } |
365 | if (pktin->type == SSH_FXP_NAME) { |
366 | int count; |
367 | char *path; |
368 | int len; |
369 | |
370 | count = sftp_pkt_getuint32(pktin); |
371 | if (count != 1) { |
372 | fxp_internal_error("REALPATH returned name count != 1\n"); |
373 | return NULL; |
374 | } |
375 | sftp_pkt_getstring(pktin, &path, &len); |
376 | if (!path) { |
377 | fxp_internal_error("REALPATH returned malformed FXP_NAME\n"); |
378 | return NULL; |
379 | } |
380 | path = mkstr(path, len); |
381 | sftp_pkt_free(pktin); |
382 | return path; |
383 | } else { |
384 | fxp_got_status(pktin); |
385 | return NULL; |
386 | } |
387 | } |
388 | |
389 | /* |
390 | * Open a file. |
391 | */ |
392 | struct fxp_handle *fxp_open(char *path, int type) { |
393 | struct sftp_packet *pktin, *pktout; |
394 | int id; |
395 | |
396 | pktout = sftp_pkt_init(SSH_FXP_OPEN); |
397 | sftp_pkt_adduint32(pktout, 0x567); /* request id */ |
398 | sftp_pkt_addstring(pktout, path); |
399 | sftp_pkt_adduint32(pktout, type); |
400 | sftp_pkt_adduint32(pktout, 0); /* (FIXME) empty ATTRS structure */ |
401 | sftp_send(pktout); |
402 | pktin = sftp_recv(); |
403 | id = sftp_pkt_getuint32(pktin); |
404 | if (id != 0x567) { |
405 | fxp_internal_error("request ID mismatch\n"); |
406 | return NULL; |
407 | } |
408 | if (pktin->type == SSH_FXP_HANDLE) { |
409 | int count; |
410 | char *hstring; |
411 | struct fxp_handle *handle; |
412 | int len; |
413 | |
414 | sftp_pkt_getstring(pktin, &hstring, &len); |
415 | if (!hstring) { |
416 | fxp_internal_error("OPEN returned malformed FXP_HANDLE\n"); |
417 | return NULL; |
418 | } |
419 | handle = smalloc(sizeof(struct fxp_handle)); |
420 | handle->hstring = mkstr(hstring, len); |
f9e162aa |
421 | handle->hlen = len; |
4c7f0d61 |
422 | sftp_pkt_free(pktin); |
423 | return handle; |
424 | } else { |
425 | fxp_got_status(pktin); |
426 | return NULL; |
427 | } |
428 | } |
429 | |
430 | /* |
431 | * Open a directory. |
432 | */ |
433 | struct fxp_handle *fxp_opendir(char *path) { |
434 | struct sftp_packet *pktin, *pktout; |
435 | int id; |
436 | |
437 | pktout = sftp_pkt_init(SSH_FXP_OPENDIR); |
438 | sftp_pkt_adduint32(pktout, 0x456); /* request id */ |
439 | sftp_pkt_addstring(pktout, path); |
440 | sftp_send(pktout); |
441 | pktin = sftp_recv(); |
442 | id = sftp_pkt_getuint32(pktin); |
443 | if (id != 0x456) { |
444 | fxp_internal_error("request ID mismatch\n"); |
445 | return NULL; |
446 | } |
447 | if (pktin->type == SSH_FXP_HANDLE) { |
448 | int count; |
449 | char *hstring; |
450 | struct fxp_handle *handle; |
451 | int len; |
452 | |
453 | sftp_pkt_getstring(pktin, &hstring, &len); |
454 | if (!hstring) { |
455 | fxp_internal_error("OPENDIR returned malformed FXP_HANDLE\n"); |
456 | return NULL; |
457 | } |
458 | handle = smalloc(sizeof(struct fxp_handle)); |
459 | handle->hstring = mkstr(hstring, len); |
f9e162aa |
460 | handle->hlen = len; |
4c7f0d61 |
461 | sftp_pkt_free(pktin); |
462 | return handle; |
463 | } else { |
464 | fxp_got_status(pktin); |
465 | return NULL; |
466 | } |
467 | } |
468 | |
469 | /* |
470 | * Close a file/dir. |
471 | */ |
472 | void fxp_close(struct fxp_handle *handle) { |
473 | struct sftp_packet *pktin, *pktout; |
474 | int id; |
475 | |
476 | pktout = sftp_pkt_init(SSH_FXP_CLOSE); |
477 | sftp_pkt_adduint32(pktout, 0x789); /* request id */ |
f9e162aa |
478 | sftp_pkt_addstring_start(pktout); |
479 | sftp_pkt_addstring_data(pktout, handle->hstring, handle->hlen); |
4c7f0d61 |
480 | sftp_send(pktout); |
481 | pktin = sftp_recv(); |
482 | id = sftp_pkt_getuint32(pktin); |
483 | if (id != 0x789) { |
484 | fxp_internal_error("request ID mismatch\n"); |
485 | return; |
486 | } |
487 | fxp_got_status(pktin); |
488 | sfree(handle->hstring); |
489 | sfree(handle); |
490 | } |
491 | |
492 | /* |
493 | * Read from a file. Returns the number of bytes read, or -1 on an |
494 | * error, or possibly 0 if EOF. (I'm not entirely sure whether it |
495 | * will return 0 on EOF, or return -1 and store SSH_FX_EOF in the |
496 | * error indicator. It might even depend on the SFTP server.) |
497 | */ |
498 | int fxp_read(struct fxp_handle *handle, char *buffer, uint64 offset, int len) { |
499 | struct sftp_packet *pktin, *pktout; |
500 | int id; |
501 | |
502 | pktout = sftp_pkt_init(SSH_FXP_READ); |
503 | sftp_pkt_adduint32(pktout, 0xBCD); /* request id */ |
f9e162aa |
504 | sftp_pkt_addstring_start(pktout); |
505 | sftp_pkt_addstring_data(pktout, handle->hstring, handle->hlen); |
4c7f0d61 |
506 | sftp_pkt_adduint64(pktout, offset); |
507 | sftp_pkt_adduint32(pktout, len); |
508 | sftp_send(pktout); |
509 | pktin = sftp_recv(); |
510 | id = sftp_pkt_getuint32(pktin); |
511 | if (id != 0xBCD) { |
512 | fxp_internal_error("request ID mismatch"); |
513 | return; |
514 | } |
515 | if (pktin->type == SSH_FXP_DATA) { |
516 | char *str; |
517 | int rlen; |
518 | |
519 | sftp_pkt_getstring(pktin, &str, &rlen); |
520 | |
521 | if (rlen > len || rlen < 0) { |
522 | fxp_internal_error("READ returned more bytes than requested"); |
523 | return -1; |
524 | } |
525 | |
526 | memcpy(buffer, str, rlen); |
527 | sfree(pktin); |
528 | return rlen; |
529 | } else { |
530 | fxp_got_status(pktin); |
531 | return -1; |
532 | } |
533 | } |
534 | |
535 | /* |
536 | * Read from a directory. |
537 | */ |
538 | struct fxp_names *fxp_readdir(struct fxp_handle *handle) { |
539 | struct sftp_packet *pktin, *pktout; |
540 | int id; |
541 | |
542 | pktout = sftp_pkt_init(SSH_FXP_READDIR); |
543 | sftp_pkt_adduint32(pktout, 0xABC); /* request id */ |
f9e162aa |
544 | sftp_pkt_addstring_start(pktout); |
545 | sftp_pkt_addstring_data(pktout, handle->hstring, handle->hlen); |
4c7f0d61 |
546 | sftp_send(pktout); |
547 | pktin = sftp_recv(); |
548 | id = sftp_pkt_getuint32(pktin); |
549 | if (id != 0xABC) { |
550 | fxp_internal_error("request ID mismatch\n"); |
551 | return; |
552 | } |
553 | if (pktin->type == SSH_FXP_NAME) { |
554 | struct fxp_names *ret; |
555 | int i; |
556 | ret = smalloc(sizeof(struct fxp_names)); |
557 | ret->nnames = sftp_pkt_getuint32(pktin); |
558 | ret->names = smalloc(ret->nnames * sizeof(struct fxp_name)); |
559 | for (i = 0; i < ret->nnames; i++) { |
560 | char *str; |
561 | int len; |
562 | sftp_pkt_getstring(pktin, &str, &len); |
563 | ret->names[i].filename = mkstr(str, len); |
564 | sftp_pkt_getstring(pktin, &str, &len); |
565 | ret->names[i].longname = mkstr(str, len); |
566 | ret->names[i].attrs = sftp_pkt_getattrs(pktin); |
567 | } |
568 | return ret; |
569 | } else { |
570 | fxp_got_status(pktin); |
571 | return NULL; |
572 | } |
573 | } |
574 | |
575 | /* |
576 | * Write to a file. Returns 0 on error, 1 on OK. |
577 | */ |
578 | int fxp_write(struct fxp_handle *handle, char *buffer, uint64 offset, int len) { |
579 | struct sftp_packet *pktin, *pktout; |
580 | int id; |
581 | |
582 | pktout = sftp_pkt_init(SSH_FXP_WRITE); |
583 | sftp_pkt_adduint32(pktout, 0xDCB); /* request id */ |
f9e162aa |
584 | sftp_pkt_addstring_start(pktout); |
585 | sftp_pkt_addstring_data(pktout, handle->hstring, handle->hlen); |
4c7f0d61 |
586 | sftp_pkt_adduint64(pktout, offset); |
587 | sftp_pkt_addstring_start(pktout); |
588 | sftp_pkt_addstring_data(pktout, buffer, len); |
589 | sftp_send(pktout); |
590 | pktin = sftp_recv(); |
591 | id = sftp_pkt_getuint32(pktin); |
592 | fxp_got_status(pktin); |
593 | return fxp_errtype == SSH_FX_OK; |
594 | } |
595 | |
596 | /* |
597 | * Free up an fxp_names structure. |
598 | */ |
599 | void fxp_free_names(struct fxp_names *names) { |
600 | int i; |
601 | |
602 | for (i = 0; i < names->nnames; i++) { |
603 | sfree(names->names[i].filename); |
604 | sfree(names->names[i].longname); |
605 | } |
606 | sfree(names->names); |
607 | sfree(names); |
608 | } |