Annotation of src/usr.bin/ssh/sftp-client.c, Revision 1.104
1.104 ! djm 1: /* $OpenBSD: sftp-client.c,v 1.103 2013/08/09 03:39:13 djm Exp $ */
1.1 djm 2: /*
1.46 djm 3: * Copyright (c) 2001-2004 Damien Miller <djm@openbsd.org>
1.1 djm 4: *
1.46 djm 5: * Permission to use, copy, modify, and distribute this software for any
6: * purpose with or without fee is hereby granted, provided that the above
7: * copyright notice and this permission notice appear in all copies.
1.1 djm 8: *
1.46 djm 9: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1 djm 16: */
17:
18: /* XXX: memleaks */
19: /* XXX: signed vs unsigned */
1.23 djm 20: /* XXX: remove all logging, only return status codes */
1.1 djm 21: /* XXX: copy between two remote sites */
22:
1.74 deraadt 23: #include <sys/types.h>
1.93 djm 24: #include <sys/poll.h>
1.21 djm 25: #include <sys/queue.h>
1.60 stevesk 26: #include <sys/stat.h>
1.71 stevesk 27: #include <sys/time.h>
1.72 stevesk 28: #include <sys/param.h>
1.82 djm 29: #include <sys/statvfs.h>
1.74 deraadt 30: #include <sys/uio.h>
1.66 stevesk 31:
1.89 djm 32: #include <dirent.h>
1.67 stevesk 33: #include <errno.h>
1.66 stevesk 34: #include <fcntl.h>
1.70 stevesk 35: #include <signal.h>
1.87 dtucker 36: #include <stdarg.h>
1.73 stevesk 37: #include <stdio.h>
1.69 stevesk 38: #include <string.h>
1.68 stevesk 39: #include <unistd.h>
1.1 djm 40:
1.74 deraadt 41: #include "xmalloc.h"
1.1 djm 42: #include "buffer.h"
43: #include "log.h"
44: #include "atomicio.h"
1.39 fgsch 45: #include "progressmeter.h"
1.64 djm 46: #include "misc.h"
1.1 djm 47:
48: #include "sftp.h"
49: #include "sftp-common.h"
50: #include "sftp-client.h"
51:
1.49 djm 52: extern volatile sig_atomic_t interrupted;
1.39 fgsch 53: extern int showprogress;
54:
1.59 david 55: /* Minimum amount of data to read at a time */
1.21 djm 56: #define MIN_READ_SIZE 512
57:
1.89 djm 58: /* Maximum depth to descend in directory trees */
59: #define MAX_DIR_DEPTH 64
60:
1.23 djm 61: struct sftp_conn {
62: int fd_in;
63: int fd_out;
64: u_int transfer_buflen;
65: u_int num_requests;
66: u_int version;
67: u_int msg_id;
1.82 djm 68: #define SFTP_EXT_POSIX_RENAME 0x00000001
69: #define SFTP_EXT_STATVFS 0x00000002
70: #define SFTP_EXT_FSTATVFS 0x00000004
1.94 djm 71: #define SFTP_EXT_HARDLINK 0x00000008
1.81 djm 72: u_int exts;
1.93 djm 73: u_int64_t limit_kbps;
74: struct bwlimit bwlimit_in, bwlimit_out;
1.23 djm 75: };
1.4 djm 76:
1.88 djm 77: static char *
1.93 djm 78: get_handle(struct sftp_conn *conn, u_int expected_id, u_int *len,
79: const char *errfmt, ...) __attribute__((format(printf, 4, 5)));
80:
81: /* ARGSUSED */
82: static int
83: sftpio(void *_bwlimit, size_t amount)
84: {
85: struct bwlimit *bwlimit = (struct bwlimit *)_bwlimit;
86:
87: bandwidth_limit(bwlimit, amount);
88: return 0;
89: }
1.88 djm 90:
1.17 itojun 91: static void
1.93 djm 92: send_msg(struct sftp_conn *conn, Buffer *m)
1.1 djm 93: {
1.40 djm 94: u_char mlen[4];
1.65 djm 95: struct iovec iov[2];
1.40 djm 96:
1.58 djm 97: if (buffer_len(m) > SFTP_MAX_MSG_LENGTH)
1.40 djm 98: fatal("Outbound message too long %u", buffer_len(m));
99:
100: /* Send length first */
1.64 djm 101: put_u32(mlen, buffer_len(m));
1.65 djm 102: iov[0].iov_base = mlen;
103: iov[0].iov_len = sizeof(mlen);
104: iov[1].iov_base = buffer_ptr(m);
105: iov[1].iov_len = buffer_len(m);
1.74 deraadt 106:
1.93 djm 107: if (atomiciov6(writev, conn->fd_out, iov, 2,
1.101 djm 108: conn->limit_kbps > 0 ? sftpio : NULL, &conn->bwlimit_out) !=
1.93 djm 109: buffer_len(m) + sizeof(mlen))
1.1 djm 110: fatal("Couldn't send packet: %s", strerror(errno));
111:
1.40 djm 112: buffer_clear(m);
1.1 djm 113: }
114:
1.17 itojun 115: static void
1.93 djm 116: get_msg(struct sftp_conn *conn, Buffer *m)
1.1 djm 117: {
1.40 djm 118: u_int msg_len;
1.1 djm 119:
1.40 djm 120: buffer_append_space(m, 4);
1.93 djm 121: if (atomicio6(read, conn->fd_in, buffer_ptr(m), 4,
122: conn->limit_kbps > 0 ? sftpio : NULL, &conn->bwlimit_in) != 4) {
1.54 avsm 123: if (errno == EPIPE)
124: fatal("Connection closed");
125: else
126: fatal("Couldn't read packet: %s", strerror(errno));
127: }
1.1 djm 128:
1.40 djm 129: msg_len = buffer_get_int(m);
1.58 djm 130: if (msg_len > SFTP_MAX_MSG_LENGTH)
1.33 deraadt 131: fatal("Received message too long %u", msg_len);
1.1 djm 132:
1.40 djm 133: buffer_append_space(m, msg_len);
1.93 djm 134: if (atomicio6(read, conn->fd_in, buffer_ptr(m), msg_len,
135: conn->limit_kbps > 0 ? sftpio : NULL, &conn->bwlimit_in)
136: != msg_len) {
1.54 avsm 137: if (errno == EPIPE)
138: fatal("Connection closed");
139: else
140: fatal("Read packet: %s", strerror(errno));
141: }
1.1 djm 142: }
143:
1.17 itojun 144: static void
1.93 djm 145: send_string_request(struct sftp_conn *conn, u_int id, u_int code, char *s,
1.1 djm 146: u_int len)
147: {
148: Buffer msg;
149:
150: buffer_init(&msg);
151: buffer_put_char(&msg, code);
152: buffer_put_int(&msg, id);
153: buffer_put_string(&msg, s, len);
1.93 djm 154: send_msg(conn, &msg);
155: debug3("Sent message fd %d T:%u I:%u", conn->fd_out, code, id);
1.1 djm 156: buffer_free(&msg);
157: }
158:
1.17 itojun 159: static void
1.93 djm 160: send_string_attrs_request(struct sftp_conn *conn, u_int id, u_int code,
161: char *s, u_int len, Attrib *a)
1.1 djm 162: {
163: Buffer msg;
164:
165: buffer_init(&msg);
166: buffer_put_char(&msg, code);
167: buffer_put_int(&msg, id);
168: buffer_put_string(&msg, s, len);
169: encode_attrib(&msg, a);
1.93 djm 170: send_msg(conn, &msg);
171: debug3("Sent message fd %d T:%u I:%u", conn->fd_out, code, id);
1.1 djm 172: buffer_free(&msg);
173: }
174:
1.17 itojun 175: static u_int
1.93 djm 176: get_status(struct sftp_conn *conn, u_int expected_id)
1.1 djm 177: {
178: Buffer msg;
179: u_int type, id, status;
180:
181: buffer_init(&msg);
1.93 djm 182: get_msg(conn, &msg);
1.1 djm 183: type = buffer_get_char(&msg);
184: id = buffer_get_int(&msg);
185:
186: if (id != expected_id)
1.33 deraadt 187: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 188: if (type != SSH2_FXP_STATUS)
1.33 deraadt 189: fatal("Expected SSH2_FXP_STATUS(%u) packet, got %u",
1.1 djm 190: SSH2_FXP_STATUS, type);
191:
192: status = buffer_get_int(&msg);
193: buffer_free(&msg);
194:
1.33 deraadt 195: debug3("SSH2_FXP_STATUS %u", status);
1.1 djm 196:
1.93 djm 197: return status;
1.1 djm 198: }
199:
1.17 itojun 200: static char *
1.93 djm 201: get_handle(struct sftp_conn *conn, u_int expected_id, u_int *len,
202: const char *errfmt, ...)
1.1 djm 203: {
204: Buffer msg;
205: u_int type, id;
1.88 djm 206: char *handle, errmsg[256];
207: va_list args;
208: int status;
209:
210: va_start(args, errfmt);
211: if (errfmt != NULL)
212: vsnprintf(errmsg, sizeof(errmsg), errfmt, args);
213: va_end(args);
1.1 djm 214:
215: buffer_init(&msg);
1.93 djm 216: get_msg(conn, &msg);
1.1 djm 217: type = buffer_get_char(&msg);
218: id = buffer_get_int(&msg);
219:
220: if (id != expected_id)
1.88 djm 221: fatal("%s: ID mismatch (%u != %u)",
222: errfmt == NULL ? __func__ : errmsg, id, expected_id);
1.1 djm 223: if (type == SSH2_FXP_STATUS) {
1.88 djm 224: status = buffer_get_int(&msg);
225: if (errfmt != NULL)
226: error("%s: %s", errmsg, fx2txt(status));
1.52 markus 227: buffer_free(&msg);
1.1 djm 228: return(NULL);
229: } else if (type != SSH2_FXP_HANDLE)
1.88 djm 230: fatal("%s: Expected SSH2_FXP_HANDLE(%u) packet, got %u",
231: errfmt == NULL ? __func__ : errmsg, SSH2_FXP_HANDLE, type);
1.1 djm 232:
233: handle = buffer_get_string(&msg, len);
234: buffer_free(&msg);
235:
236: return(handle);
237: }
238:
1.17 itojun 239: static Attrib *
1.93 djm 240: get_decode_stat(struct sftp_conn *conn, u_int expected_id, int quiet)
1.1 djm 241: {
242: Buffer msg;
243: u_int type, id;
244: Attrib *a;
245:
246: buffer_init(&msg);
1.93 djm 247: get_msg(conn, &msg);
1.1 djm 248:
249: type = buffer_get_char(&msg);
250: id = buffer_get_int(&msg);
251:
1.33 deraadt 252: debug3("Received stat reply T:%u I:%u", type, id);
1.1 djm 253: if (id != expected_id)
1.33 deraadt 254: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 255: if (type == SSH2_FXP_STATUS) {
256: int status = buffer_get_int(&msg);
257:
1.14 djm 258: if (quiet)
259: debug("Couldn't stat remote file: %s", fx2txt(status));
260: else
261: error("Couldn't stat remote file: %s", fx2txt(status));
1.52 markus 262: buffer_free(&msg);
1.1 djm 263: return(NULL);
264: } else if (type != SSH2_FXP_ATTRS) {
1.33 deraadt 265: fatal("Expected SSH2_FXP_ATTRS(%u) packet, got %u",
1.1 djm 266: SSH2_FXP_ATTRS, type);
267: }
268: a = decode_attrib(&msg);
269: buffer_free(&msg);
270:
271: return(a);
272: }
273:
1.82 djm 274: static int
1.93 djm 275: get_decode_statvfs(struct sftp_conn *conn, struct sftp_statvfs *st,
276: u_int expected_id, int quiet)
1.82 djm 277: {
278: Buffer msg;
279: u_int type, id, flag;
280:
281: buffer_init(&msg);
1.93 djm 282: get_msg(conn, &msg);
1.82 djm 283:
284: type = buffer_get_char(&msg);
285: id = buffer_get_int(&msg);
286:
287: debug3("Received statvfs reply T:%u I:%u", type, id);
288: if (id != expected_id)
289: fatal("ID mismatch (%u != %u)", id, expected_id);
290: if (type == SSH2_FXP_STATUS) {
291: int status = buffer_get_int(&msg);
292:
293: if (quiet)
294: debug("Couldn't statvfs: %s", fx2txt(status));
295: else
296: error("Couldn't statvfs: %s", fx2txt(status));
297: buffer_free(&msg);
298: return -1;
299: } else if (type != SSH2_FXP_EXTENDED_REPLY) {
300: fatal("Expected SSH2_FXP_EXTENDED_REPLY(%u) packet, got %u",
301: SSH2_FXP_EXTENDED_REPLY, type);
302: }
303:
304: bzero(st, sizeof(*st));
1.84 dtucker 305: st->f_bsize = buffer_get_int64(&msg);
306: st->f_frsize = buffer_get_int64(&msg);
1.82 djm 307: st->f_blocks = buffer_get_int64(&msg);
308: st->f_bfree = buffer_get_int64(&msg);
309: st->f_bavail = buffer_get_int64(&msg);
310: st->f_files = buffer_get_int64(&msg);
311: st->f_ffree = buffer_get_int64(&msg);
312: st->f_favail = buffer_get_int64(&msg);
1.83 djm 313: st->f_fsid = buffer_get_int64(&msg);
1.84 dtucker 314: flag = buffer_get_int64(&msg);
315: st->f_namemax = buffer_get_int64(&msg);
1.82 djm 316:
317: st->f_flag = (flag & SSH2_FXE_STATVFS_ST_RDONLY) ? ST_RDONLY : 0;
318: st->f_flag |= (flag & SSH2_FXE_STATVFS_ST_NOSUID) ? ST_NOSUID : 0;
319:
320: buffer_free(&msg);
321:
322: return 0;
323: }
324:
1.23 djm 325: struct sftp_conn *
1.93 djm 326: do_init(int fd_in, int fd_out, u_int transfer_buflen, u_int num_requests,
327: u_int64_t limit_kbps)
1.1 djm 328: {
1.93 djm 329: u_int type;
1.1 djm 330: Buffer msg;
1.23 djm 331: struct sftp_conn *ret;
1.1 djm 332:
1.103 djm 333: ret = xcalloc(1, sizeof(*ret));
334: ret->msg_id = 1;
1.93 djm 335: ret->fd_in = fd_in;
336: ret->fd_out = fd_out;
337: ret->transfer_buflen = transfer_buflen;
338: ret->num_requests = num_requests;
339: ret->exts = 0;
340: ret->limit_kbps = 0;
341:
1.1 djm 342: buffer_init(&msg);
343: buffer_put_char(&msg, SSH2_FXP_INIT);
344: buffer_put_int(&msg, SSH2_FILEXFER_VERSION);
1.93 djm 345: send_msg(ret, &msg);
1.1 djm 346:
347: buffer_clear(&msg);
348:
1.93 djm 349: get_msg(ret, &msg);
1.1 djm 350:
1.3 stevesk 351: /* Expecting a VERSION reply */
1.1 djm 352: if ((type = buffer_get_char(&msg)) != SSH2_FXP_VERSION) {
1.33 deraadt 353: error("Invalid packet back from SSH2_FXP_INIT (type %u)",
1.1 djm 354: type);
355: buffer_free(&msg);
1.23 djm 356: return(NULL);
1.1 djm 357: }
1.93 djm 358: ret->version = buffer_get_int(&msg);
1.1 djm 359:
1.93 djm 360: debug2("Remote version: %u", ret->version);
1.1 djm 361:
362: /* Check for extensions */
363: while (buffer_len(&msg) > 0) {
364: char *name = buffer_get_string(&msg, NULL);
365: char *value = buffer_get_string(&msg, NULL);
1.85 djm 366: int known = 0;
1.1 djm 367:
1.82 djm 368: if (strcmp(name, "posix-rename@openssh.com") == 0 &&
1.85 djm 369: strcmp(value, "1") == 0) {
1.93 djm 370: ret->exts |= SFTP_EXT_POSIX_RENAME;
1.85 djm 371: known = 1;
372: } else if (strcmp(name, "statvfs@openssh.com") == 0 &&
373: strcmp(value, "2") == 0) {
1.93 djm 374: ret->exts |= SFTP_EXT_STATVFS;
1.85 djm 375: known = 1;
1.94 djm 376: } else if (strcmp(name, "fstatvfs@openssh.com") == 0 &&
1.85 djm 377: strcmp(value, "2") == 0) {
1.93 djm 378: ret->exts |= SFTP_EXT_FSTATVFS;
1.85 djm 379: known = 1;
1.94 djm 380: } else if (strcmp(name, "hardlink@openssh.com") == 0 &&
381: strcmp(value, "1") == 0) {
382: ret->exts |= SFTP_EXT_HARDLINK;
383: known = 1;
1.85 djm 384: }
385: if (known) {
386: debug2("Server supports extension \"%s\" revision %s",
387: name, value);
388: } else {
389: debug2("Unrecognised server extension \"%s\"", name);
390: }
1.98 djm 391: free(name);
392: free(value);
1.1 djm 393: }
394:
395: buffer_free(&msg);
1.11 djm 396:
1.23 djm 397: /* Some filexfer v.0 servers don't support large packets */
1.93 djm 398: if (ret->version == 0)
1.29 markus 399: ret->transfer_buflen = MIN(ret->transfer_buflen, 20480);
1.23 djm 400:
1.93 djm 401: ret->limit_kbps = limit_kbps;
402: if (ret->limit_kbps > 0) {
403: bandwidth_limit_init(&ret->bwlimit_in, ret->limit_kbps,
404: ret->transfer_buflen);
405: bandwidth_limit_init(&ret->bwlimit_out, ret->limit_kbps,
406: ret->transfer_buflen);
407: }
408:
409: return ret;
1.23 djm 410: }
411:
412: u_int
413: sftp_proto_version(struct sftp_conn *conn)
414: {
1.93 djm 415: return conn->version;
1.1 djm 416: }
417:
418: int
1.23 djm 419: do_close(struct sftp_conn *conn, char *handle, u_int handle_len)
1.1 djm 420: {
421: u_int id, status;
422: Buffer msg;
423:
424: buffer_init(&msg);
425:
1.23 djm 426: id = conn->msg_id++;
1.1 djm 427: buffer_put_char(&msg, SSH2_FXP_CLOSE);
428: buffer_put_int(&msg, id);
429: buffer_put_string(&msg, handle, handle_len);
1.93 djm 430: send_msg(conn, &msg);
1.33 deraadt 431: debug3("Sent message SSH2_FXP_CLOSE I:%u", id);
1.1 djm 432:
1.93 djm 433: status = get_status(conn, id);
1.1 djm 434: if (status != SSH2_FX_OK)
435: error("Couldn't close file: %s", fx2txt(status));
436:
437: buffer_free(&msg);
438:
1.93 djm 439: return status;
1.1 djm 440: }
441:
1.12 djm 442:
1.17 itojun 443: static int
1.23 djm 444: do_lsreaddir(struct sftp_conn *conn, char *path, int printflag,
1.12 djm 445: SFTP_DIRENT ***dir)
1.1 djm 446: {
447: Buffer msg;
1.55 djm 448: u_int count, type, id, handle_len, i, expected_id, ents = 0;
1.1 djm 449: char *handle;
450:
1.23 djm 451: id = conn->msg_id++;
1.1 djm 452:
453: buffer_init(&msg);
454: buffer_put_char(&msg, SSH2_FXP_OPENDIR);
455: buffer_put_int(&msg, id);
456: buffer_put_cstring(&msg, path);
1.93 djm 457: send_msg(conn, &msg);
1.1 djm 458:
1.93 djm 459: handle = get_handle(conn, id, &handle_len,
1.88 djm 460: "remote readdir(\"%s\")", path);
1.96 markus 461: if (handle == NULL) {
462: buffer_free(&msg);
1.93 djm 463: return -1;
1.96 markus 464: }
1.1 djm 465:
1.12 djm 466: if (dir) {
467: ents = 0;
468: *dir = xmalloc(sizeof(**dir));
469: (*dir)[0] = NULL;
470: }
471:
1.49 djm 472: for (; !interrupted;) {
1.23 djm 473: id = expected_id = conn->msg_id++;
1.1 djm 474:
1.33 deraadt 475: debug3("Sending SSH2_FXP_READDIR I:%u", id);
1.1 djm 476:
477: buffer_clear(&msg);
478: buffer_put_char(&msg, SSH2_FXP_READDIR);
479: buffer_put_int(&msg, id);
480: buffer_put_string(&msg, handle, handle_len);
1.93 djm 481: send_msg(conn, &msg);
1.1 djm 482:
483: buffer_clear(&msg);
484:
1.93 djm 485: get_msg(conn, &msg);
1.1 djm 486:
487: type = buffer_get_char(&msg);
488: id = buffer_get_int(&msg);
489:
1.33 deraadt 490: debug3("Received reply T:%u I:%u", type, id);
1.1 djm 491:
492: if (id != expected_id)
1.33 deraadt 493: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 494:
495: if (type == SSH2_FXP_STATUS) {
496: int status = buffer_get_int(&msg);
497:
498: debug3("Received SSH2_FXP_STATUS %d", status);
499:
500: if (status == SSH2_FX_EOF) {
501: break;
502: } else {
503: error("Couldn't read directory: %s",
504: fx2txt(status));
1.23 djm 505: do_close(conn, handle, handle_len);
1.98 djm 506: free(handle);
1.96 markus 507: buffer_free(&msg);
1.9 djm 508: return(status);
1.1 djm 509: }
510: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 511: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.1 djm 512: SSH2_FXP_NAME, type);
513:
514: count = buffer_get_int(&msg);
1.7 markus 515: if (count == 0)
516: break;
1.8 stevesk 517: debug3("Received %d SSH2_FXP_NAME responses", count);
1.19 deraadt 518: for (i = 0; i < count; i++) {
1.1 djm 519: char *filename, *longname;
520: Attrib *a;
521:
522: filename = buffer_get_string(&msg, NULL);
523: longname = buffer_get_string(&msg, NULL);
524: a = decode_attrib(&msg);
525:
1.12 djm 526: if (printflag)
527: printf("%s\n", longname);
528:
1.89 djm 529: /*
530: * Directory entries should never contain '/'
531: * These can be used to attack recursive ops
532: * (e.g. send '../../../../etc/passwd')
533: */
534: if (strchr(filename, '/') != NULL) {
535: error("Server sent suspect path \"%s\" "
536: "during readdir of \"%s\"", filename, path);
537: goto next;
538: }
539:
1.12 djm 540: if (dir) {
1.62 djm 541: *dir = xrealloc(*dir, ents + 2, sizeof(**dir));
1.12 djm 542: (*dir)[ents] = xmalloc(sizeof(***dir));
543: (*dir)[ents]->filename = xstrdup(filename);
544: (*dir)[ents]->longname = xstrdup(longname);
545: memcpy(&(*dir)[ents]->a, a, sizeof(*a));
546: (*dir)[++ents] = NULL;
547: }
1.89 djm 548: next:
1.98 djm 549: free(filename);
550: free(longname);
1.1 djm 551: }
552: }
553:
554: buffer_free(&msg);
1.23 djm 555: do_close(conn, handle, handle_len);
1.98 djm 556: free(handle);
1.1 djm 557:
1.49 djm 558: /* Don't return partial matches on interrupt */
559: if (interrupted && dir != NULL && *dir != NULL) {
560: free_sftp_dirents(*dir);
561: *dir = xmalloc(sizeof(**dir));
562: **dir = NULL;
563: }
564:
1.93 djm 565: return 0;
1.12 djm 566: }
567:
568: int
1.23 djm 569: do_readdir(struct sftp_conn *conn, char *path, SFTP_DIRENT ***dir)
1.12 djm 570: {
1.23 djm 571: return(do_lsreaddir(conn, path, 0, dir));
1.12 djm 572: }
573:
574: void free_sftp_dirents(SFTP_DIRENT **s)
575: {
576: int i;
1.19 deraadt 577:
578: for (i = 0; s[i]; i++) {
1.98 djm 579: free(s[i]->filename);
580: free(s[i]->longname);
581: free(s[i]);
1.12 djm 582: }
1.98 djm 583: free(s);
1.12 djm 584: }
585:
586: int
1.23 djm 587: do_rm(struct sftp_conn *conn, char *path)
1.1 djm 588: {
589: u_int status, id;
590:
591: debug2("Sending SSH2_FXP_REMOVE \"%s\"", path);
592:
1.23 djm 593: id = conn->msg_id++;
1.93 djm 594: send_string_request(conn, id, SSH2_FXP_REMOVE, path, strlen(path));
595: status = get_status(conn, id);
1.1 djm 596: if (status != SSH2_FX_OK)
597: error("Couldn't delete file: %s", fx2txt(status));
598: return(status);
599: }
600:
601: int
1.89 djm 602: do_mkdir(struct sftp_conn *conn, char *path, Attrib *a, int printflag)
1.1 djm 603: {
604: u_int status, id;
605:
1.23 djm 606: id = conn->msg_id++;
1.93 djm 607: send_string_attrs_request(conn, id, SSH2_FXP_MKDIR, path,
1.1 djm 608: strlen(path), a);
609:
1.93 djm 610: status = get_status(conn, id);
1.89 djm 611: if (status != SSH2_FX_OK && printflag)
1.1 djm 612: error("Couldn't create directory: %s", fx2txt(status));
613:
614: return(status);
615: }
616:
617: int
1.23 djm 618: do_rmdir(struct sftp_conn *conn, char *path)
1.1 djm 619: {
620: u_int status, id;
621:
1.23 djm 622: id = conn->msg_id++;
1.93 djm 623: send_string_request(conn, id, SSH2_FXP_RMDIR, path,
1.23 djm 624: strlen(path));
1.1 djm 625:
1.93 djm 626: status = get_status(conn, id);
1.1 djm 627: if (status != SSH2_FX_OK)
628: error("Couldn't remove directory: %s", fx2txt(status));
629:
630: return(status);
631: }
632:
633: Attrib *
1.23 djm 634: do_stat(struct sftp_conn *conn, char *path, int quiet)
1.1 djm 635: {
636: u_int id;
637:
1.23 djm 638: id = conn->msg_id++;
639:
1.93 djm 640: send_string_request(conn, id,
1.28 markus 641: conn->version == 0 ? SSH2_FXP_STAT_VERSION_0 : SSH2_FXP_STAT,
1.23 djm 642: path, strlen(path));
643:
1.93 djm 644: return(get_decode_stat(conn, id, quiet));
1.1 djm 645: }
646:
647: Attrib *
1.23 djm 648: do_lstat(struct sftp_conn *conn, char *path, int quiet)
1.1 djm 649: {
650: u_int id;
651:
1.23 djm 652: if (conn->version == 0) {
653: if (quiet)
654: debug("Server version does not support lstat operation");
655: else
1.43 itojun 656: logit("Server version does not support lstat operation");
1.30 markus 657: return(do_stat(conn, path, quiet));
1.23 djm 658: }
659:
660: id = conn->msg_id++;
1.93 djm 661: send_string_request(conn, id, SSH2_FXP_LSTAT, path,
1.23 djm 662: strlen(path));
663:
1.93 djm 664: return(get_decode_stat(conn, id, quiet));
1.1 djm 665: }
666:
1.78 chl 667: #ifdef notyet
1.1 djm 668: Attrib *
1.23 djm 669: do_fstat(struct sftp_conn *conn, char *handle, u_int handle_len, int quiet)
1.1 djm 670: {
671: u_int id;
672:
1.23 djm 673: id = conn->msg_id++;
1.93 djm 674: send_string_request(conn, id, SSH2_FXP_FSTAT, handle,
1.23 djm 675: handle_len);
676:
1.93 djm 677: return(get_decode_stat(conn, id, quiet));
1.1 djm 678: }
1.78 chl 679: #endif
1.1 djm 680:
681: int
1.23 djm 682: do_setstat(struct sftp_conn *conn, char *path, Attrib *a)
1.1 djm 683: {
684: u_int status, id;
685:
1.23 djm 686: id = conn->msg_id++;
1.93 djm 687: send_string_attrs_request(conn, id, SSH2_FXP_SETSTAT, path,
1.1 djm 688: strlen(path), a);
689:
1.93 djm 690: status = get_status(conn, id);
1.1 djm 691: if (status != SSH2_FX_OK)
692: error("Couldn't setstat on \"%s\": %s", path,
693: fx2txt(status));
694:
695: return(status);
696: }
697:
698: int
1.23 djm 699: do_fsetstat(struct sftp_conn *conn, char *handle, u_int handle_len,
1.1 djm 700: Attrib *a)
701: {
702: u_int status, id;
703:
1.23 djm 704: id = conn->msg_id++;
1.93 djm 705: send_string_attrs_request(conn, id, SSH2_FXP_FSETSTAT, handle,
1.1 djm 706: handle_len, a);
707:
1.93 djm 708: status = get_status(conn, id);
1.1 djm 709: if (status != SSH2_FX_OK)
710: error("Couldn't fsetstat: %s", fx2txt(status));
711:
712: return(status);
713: }
714:
715: char *
1.23 djm 716: do_realpath(struct sftp_conn *conn, char *path)
1.1 djm 717: {
718: Buffer msg;
719: u_int type, expected_id, count, id;
720: char *filename, *longname;
721: Attrib *a;
722:
1.23 djm 723: expected_id = id = conn->msg_id++;
1.93 djm 724: send_string_request(conn, id, SSH2_FXP_REALPATH, path,
1.23 djm 725: strlen(path));
1.1 djm 726:
727: buffer_init(&msg);
728:
1.93 djm 729: get_msg(conn, &msg);
1.1 djm 730: type = buffer_get_char(&msg);
731: id = buffer_get_int(&msg);
732:
733: if (id != expected_id)
1.33 deraadt 734: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 735:
736: if (type == SSH2_FXP_STATUS) {
737: u_int status = buffer_get_int(&msg);
738:
739: error("Couldn't canonicalise: %s", fx2txt(status));
1.91 djm 740: buffer_free(&msg);
741: return NULL;
1.1 djm 742: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 743: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.1 djm 744: SSH2_FXP_NAME, type);
745:
746: count = buffer_get_int(&msg);
747: if (count != 1)
748: fatal("Got multiple names (%d) from SSH_FXP_REALPATH", count);
749:
750: filename = buffer_get_string(&msg, NULL);
751: longname = buffer_get_string(&msg, NULL);
752: a = decode_attrib(&msg);
753:
1.97 dtucker 754: debug3("SSH_FXP_REALPATH %s -> %s size %lu", path, filename,
755: (unsigned long)a->size);
1.1 djm 756:
1.98 djm 757: free(longname);
1.1 djm 758:
759: buffer_free(&msg);
760:
761: return(filename);
762: }
763:
764: int
1.102 djm 765: do_rename(struct sftp_conn *conn, char *oldpath, char *newpath,
766: int force_legacy)
1.1 djm 767: {
768: Buffer msg;
769: u_int status, id;
1.102 djm 770: int use_ext = (conn->exts & SFTP_EXT_POSIX_RENAME) && !force_legacy;
1.1 djm 771:
772: buffer_init(&msg);
773:
774: /* Send rename request */
1.23 djm 775: id = conn->msg_id++;
1.102 djm 776: if (use_ext) {
1.81 djm 777: buffer_put_char(&msg, SSH2_FXP_EXTENDED);
778: buffer_put_int(&msg, id);
779: buffer_put_cstring(&msg, "posix-rename@openssh.com");
780: } else {
781: buffer_put_char(&msg, SSH2_FXP_RENAME);
782: buffer_put_int(&msg, id);
783: }
1.1 djm 784: buffer_put_cstring(&msg, oldpath);
785: buffer_put_cstring(&msg, newpath);
1.93 djm 786: send_msg(conn, &msg);
1.81 djm 787: debug3("Sent message %s \"%s\" -> \"%s\"",
1.102 djm 788: use_ext ? "posix-rename@openssh.com" : "SSH2_FXP_RENAME",
789: oldpath, newpath);
1.1 djm 790: buffer_free(&msg);
791:
1.93 djm 792: status = get_status(conn, id);
1.1 djm 793: if (status != SSH2_FX_OK)
1.23 djm 794: error("Couldn't rename file \"%s\" to \"%s\": %s", oldpath,
1.94 djm 795: newpath, fx2txt(status));
796:
797: return(status);
798: }
799:
800: int
801: do_hardlink(struct sftp_conn *conn, char *oldpath, char *newpath)
802: {
803: Buffer msg;
804: u_int status, id;
805:
806: if ((conn->exts & SFTP_EXT_HARDLINK) == 0) {
807: error("Server does not support hardlink@openssh.com extension");
808: return -1;
809: }
810:
1.95 markus 811: buffer_init(&msg);
812:
813: /* Send link request */
814: id = conn->msg_id++;
1.94 djm 815: buffer_put_char(&msg, SSH2_FXP_EXTENDED);
816: buffer_put_int(&msg, id);
817: buffer_put_cstring(&msg, "hardlink@openssh.com");
818: buffer_put_cstring(&msg, oldpath);
819: buffer_put_cstring(&msg, newpath);
820: send_msg(conn, &msg);
821: debug3("Sent message hardlink@openssh.com \"%s\" -> \"%s\"",
822: oldpath, newpath);
823: buffer_free(&msg);
824:
825: status = get_status(conn, id);
826: if (status != SSH2_FX_OK)
827: error("Couldn't link file \"%s\" to \"%s\": %s", oldpath,
1.23 djm 828: newpath, fx2txt(status));
1.1 djm 829:
830: return(status);
1.11 djm 831: }
832:
833: int
1.23 djm 834: do_symlink(struct sftp_conn *conn, char *oldpath, char *newpath)
1.11 djm 835: {
836: Buffer msg;
837: u_int status, id;
838:
1.23 djm 839: if (conn->version < 3) {
840: error("This server does not support the symlink operation");
841: return(SSH2_FX_OP_UNSUPPORTED);
842: }
843:
1.11 djm 844: buffer_init(&msg);
845:
1.48 djm 846: /* Send symlink request */
1.23 djm 847: id = conn->msg_id++;
1.11 djm 848: buffer_put_char(&msg, SSH2_FXP_SYMLINK);
849: buffer_put_int(&msg, id);
850: buffer_put_cstring(&msg, oldpath);
851: buffer_put_cstring(&msg, newpath);
1.93 djm 852: send_msg(conn, &msg);
1.11 djm 853: debug3("Sent message SSH2_FXP_SYMLINK \"%s\" -> \"%s\"", oldpath,
854: newpath);
855: buffer_free(&msg);
856:
1.93 djm 857: status = get_status(conn, id);
1.11 djm 858: if (status != SSH2_FX_OK)
1.36 markus 859: error("Couldn't symlink file \"%s\" to \"%s\": %s", oldpath,
1.23 djm 860: newpath, fx2txt(status));
1.11 djm 861:
862: return(status);
863: }
864:
1.78 chl 865: #ifdef notyet
1.11 djm 866: char *
1.23 djm 867: do_readlink(struct sftp_conn *conn, char *path)
1.11 djm 868: {
869: Buffer msg;
870: u_int type, expected_id, count, id;
871: char *filename, *longname;
872: Attrib *a;
873:
1.23 djm 874: expected_id = id = conn->msg_id++;
1.93 djm 875: send_string_request(conn, id, SSH2_FXP_READLINK, path, strlen(path));
1.11 djm 876:
877: buffer_init(&msg);
878:
1.93 djm 879: get_msg(conn, &msg);
1.11 djm 880: type = buffer_get_char(&msg);
881: id = buffer_get_int(&msg);
882:
883: if (id != expected_id)
1.33 deraadt 884: fatal("ID mismatch (%u != %u)", id, expected_id);
1.11 djm 885:
886: if (type == SSH2_FXP_STATUS) {
887: u_int status = buffer_get_int(&msg);
888:
889: error("Couldn't readlink: %s", fx2txt(status));
1.95 markus 890: buffer_free(&msg);
1.11 djm 891: return(NULL);
892: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 893: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.11 djm 894: SSH2_FXP_NAME, type);
895:
896: count = buffer_get_int(&msg);
897: if (count != 1)
898: fatal("Got multiple names (%d) from SSH_FXP_READLINK", count);
899:
900: filename = buffer_get_string(&msg, NULL);
901: longname = buffer_get_string(&msg, NULL);
902: a = decode_attrib(&msg);
903:
904: debug3("SSH_FXP_READLINK %s -> %s", path, filename);
905:
1.98 djm 906: free(longname);
1.11 djm 907:
908: buffer_free(&msg);
909:
910: return(filename);
1.82 djm 911: }
912: #endif
913:
914: int
1.84 dtucker 915: do_statvfs(struct sftp_conn *conn, const char *path, struct sftp_statvfs *st,
1.82 djm 916: int quiet)
917: {
918: Buffer msg;
919: u_int id;
920:
921: if ((conn->exts & SFTP_EXT_STATVFS) == 0) {
922: error("Server does not support statvfs@openssh.com extension");
923: return -1;
924: }
925:
926: id = conn->msg_id++;
927:
928: buffer_init(&msg);
929: buffer_clear(&msg);
930: buffer_put_char(&msg, SSH2_FXP_EXTENDED);
931: buffer_put_int(&msg, id);
932: buffer_put_cstring(&msg, "statvfs@openssh.com");
933: buffer_put_cstring(&msg, path);
1.93 djm 934: send_msg(conn, &msg);
1.82 djm 935: buffer_free(&msg);
936:
1.93 djm 937: return get_decode_statvfs(conn, st, id, quiet);
1.82 djm 938: }
939:
940: #ifdef notyet
941: int
942: do_fstatvfs(struct sftp_conn *conn, const char *handle, u_int handle_len,
1.84 dtucker 943: struct sftp_statvfs *st, int quiet)
1.82 djm 944: {
945: Buffer msg;
946: u_int id;
947:
948: if ((conn->exts & SFTP_EXT_FSTATVFS) == 0) {
949: error("Server does not support fstatvfs@openssh.com extension");
950: return -1;
951: }
952:
953: id = conn->msg_id++;
954:
955: buffer_init(&msg);
956: buffer_clear(&msg);
957: buffer_put_char(&msg, SSH2_FXP_EXTENDED);
958: buffer_put_int(&msg, id);
959: buffer_put_cstring(&msg, "fstatvfs@openssh.com");
960: buffer_put_string(&msg, handle, handle_len);
1.93 djm 961: send_msg(conn, &msg);
1.82 djm 962: buffer_free(&msg);
963:
1.93 djm 964: return get_decode_statvfs(conn, st, id, quiet);
1.1 djm 965: }
1.78 chl 966: #endif
1.1 djm 967:
1.21 djm 968: static void
1.93 djm 969: send_read_request(struct sftp_conn *conn, u_int id, u_int64_t offset,
970: u_int len, char *handle, u_int handle_len)
1.21 djm 971: {
972: Buffer msg;
1.28 markus 973:
1.21 djm 974: buffer_init(&msg);
975: buffer_clear(&msg);
976: buffer_put_char(&msg, SSH2_FXP_READ);
977: buffer_put_int(&msg, id);
978: buffer_put_string(&msg, handle, handle_len);
979: buffer_put_int64(&msg, offset);
980: buffer_put_int(&msg, len);
1.93 djm 981: send_msg(conn, &msg);
1.21 djm 982: buffer_free(&msg);
1.28 markus 983: }
1.21 djm 984:
1.1 djm 985: int
1.23 djm 986: do_download(struct sftp_conn *conn, char *remote_path, char *local_path,
1.101 djm 987: Attrib *a, int pflag, int resume)
1.1 djm 988: {
1.89 djm 989: Attrib junk;
1.21 djm 990: Buffer msg;
1.1 djm 991: char *handle;
1.101 djm 992: int local_fd = -1, status = 0, write_error;
993: int read_error, write_errno, reordered = 0;
994: u_int64_t offset = 0, size, highwater;
1.55 djm 995: u_int handle_len, mode, type, id, buflen, num_req, max_req;
1.39 fgsch 996: off_t progress_counter;
1.101 djm 997: struct stat st;
1.21 djm 998: struct request {
999: u_int id;
1000: u_int len;
1001: u_int64_t offset;
1.28 markus 1002: TAILQ_ENTRY(request) tq;
1.21 djm 1003: };
1004: TAILQ_HEAD(reqhead, request) requests;
1005: struct request *req;
1006:
1007: TAILQ_INIT(&requests);
1.1 djm 1008:
1.89 djm 1009: if (a == NULL && (a = do_stat(conn, remote_path, 0)) == NULL)
1010: return -1;
1.1 djm 1011:
1.86 djm 1012: /* Do not preserve set[ug]id here, as we do not preserve ownership */
1.1 djm 1013: if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
1.38 djm 1014: mode = a->perm & 0777;
1.1 djm 1015: else
1016: mode = 0666;
1017:
1.14 djm 1018: if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) &&
1.41 djm 1019: (!S_ISREG(a->perm))) {
1020: error("Cannot download non-regular file: %s", remote_path);
1.14 djm 1021: return(-1);
1022: }
1023:
1.21 djm 1024: if (a->flags & SSH2_FILEXFER_ATTR_SIZE)
1025: size = a->size;
1026: else
1027: size = 0;
1028:
1.23 djm 1029: buflen = conn->transfer_buflen;
1.1 djm 1030: buffer_init(&msg);
1031:
1032: /* Send open request */
1.23 djm 1033: id = conn->msg_id++;
1.1 djm 1034: buffer_put_char(&msg, SSH2_FXP_OPEN);
1035: buffer_put_int(&msg, id);
1036: buffer_put_cstring(&msg, remote_path);
1037: buffer_put_int(&msg, SSH2_FXF_READ);
1038: attrib_clear(&junk); /* Send empty attributes */
1039: encode_attrib(&msg, &junk);
1.93 djm 1040: send_msg(conn, &msg);
1.33 deraadt 1041: debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path);
1.1 djm 1042:
1.93 djm 1043: handle = get_handle(conn, id, &handle_len,
1.88 djm 1044: "remote open(\"%s\")", remote_path);
1.1 djm 1045: if (handle == NULL) {
1046: buffer_free(&msg);
1047: return(-1);
1048: }
1049:
1.101 djm 1050: local_fd = open(local_path, O_WRONLY | O_CREAT | (resume ? : O_TRUNC),
1.99 dtucker 1051: mode | S_IWUSR);
1.23 djm 1052: if (local_fd == -1) {
1053: error("Couldn't open local file \"%s\" for writing: %s",
1054: local_path, strerror(errno));
1.101 djm 1055: goto fail;
1056: }
1057: offset = highwater = 0;
1058: if (resume) {
1059: if (fstat(local_fd, &st) == -1) {
1060: error("Unable to stat local file \"%s\": %s",
1061: local_path, strerror(errno));
1062: goto fail;
1063: }
1064: if ((size_t)st.st_size > size) {
1065: error("Unable to resume download of \"%s\": "
1066: "local file is larger than remote", local_path);
1067: fail:
1068: do_close(conn, handle, handle_len);
1069: buffer_free(&msg);
1070: free(handle);
1071: return -1;
1072: }
1073: offset = highwater = st.st_size;
1.23 djm 1074: }
1075:
1.1 djm 1076: /* Read from remote and write to local */
1.101 djm 1077: write_error = read_error = write_errno = num_req = 0;
1.21 djm 1078: max_req = 1;
1.101 djm 1079: progress_counter = offset;
1.39 fgsch 1080:
1.47 djm 1081: if (showprogress && size != 0)
1082: start_progress_meter(remote_path, size, &progress_counter);
1.39 fgsch 1083:
1.21 djm 1084: while (num_req > 0 || max_req > 0) {
1085: char *data;
1.1 djm 1086: u_int len;
1087:
1.49 djm 1088: /*
1.51 deraadt 1089: * Simulate EOF on interrupt: stop sending new requests and
1.49 djm 1090: * allow outstanding requests to drain gracefully
1091: */
1092: if (interrupted) {
1093: if (num_req == 0) /* If we haven't started yet... */
1094: break;
1095: max_req = 0;
1096: }
1097:
1.21 djm 1098: /* Send some more requests */
1099: while (num_req < max_req) {
1.28 markus 1100: debug3("Request range %llu -> %llu (%d/%d)",
1.25 itojun 1101: (unsigned long long)offset,
1102: (unsigned long long)offset + buflen - 1,
1103: num_req, max_req);
1.21 djm 1104: req = xmalloc(sizeof(*req));
1.23 djm 1105: req->id = conn->msg_id++;
1.21 djm 1106: req->len = buflen;
1107: req->offset = offset;
1108: offset += buflen;
1109: num_req++;
1110: TAILQ_INSERT_TAIL(&requests, req, tq);
1.93 djm 1111: send_read_request(conn, req->id, req->offset,
1.21 djm 1112: req->len, handle, handle_len);
1113: }
1.1 djm 1114:
1115: buffer_clear(&msg);
1.93 djm 1116: get_msg(conn, &msg);
1.1 djm 1117: type = buffer_get_char(&msg);
1118: id = buffer_get_int(&msg);
1.33 deraadt 1119: debug3("Received reply T:%u I:%u R:%d", type, id, max_req);
1.21 djm 1120:
1121: /* Find the request in our queue */
1.53 deraadt 1122: for (req = TAILQ_FIRST(&requests);
1.21 djm 1123: req != NULL && req->id != id;
1124: req = TAILQ_NEXT(req, tq))
1125: ;
1126: if (req == NULL)
1127: fatal("Unexpected reply %u", id);
1128:
1129: switch (type) {
1130: case SSH2_FXP_STATUS:
1.5 djm 1131: status = buffer_get_int(&msg);
1.21 djm 1132: if (status != SSH2_FX_EOF)
1133: read_error = 1;
1134: max_req = 0;
1135: TAILQ_REMOVE(&requests, req, tq);
1.98 djm 1136: free(req);
1.21 djm 1137: num_req--;
1138: break;
1139: case SSH2_FXP_DATA:
1140: data = buffer_get_string(&msg, &len);
1.26 itojun 1141: debug3("Received data %llu -> %llu",
1.28 markus 1142: (unsigned long long)req->offset,
1.26 itojun 1143: (unsigned long long)req->offset + len - 1);
1.21 djm 1144: if (len > req->len)
1145: fatal("Received more data than asked for "
1.37 deraadt 1146: "%u > %u", len, req->len);
1.21 djm 1147: if ((lseek(local_fd, req->offset, SEEK_SET) == -1 ||
1.44 deraadt 1148: atomicio(vwrite, local_fd, data, len) != len) &&
1.21 djm 1149: !write_error) {
1150: write_errno = errno;
1151: write_error = 1;
1152: max_req = 0;
1153: }
1.101 djm 1154: else if (!reordered && req->offset <= highwater)
1155: highwater = req->offset + len;
1156: else if (!reordered && req->offset > highwater)
1157: reordered = 1;
1.39 fgsch 1158: progress_counter += len;
1.98 djm 1159: free(data);
1.1 djm 1160:
1.21 djm 1161: if (len == req->len) {
1162: TAILQ_REMOVE(&requests, req, tq);
1.98 djm 1163: free(req);
1.21 djm 1164: num_req--;
1165: } else {
1166: /* Resend the request for the missing data */
1167: debug3("Short data block, re-requesting "
1.26 itojun 1168: "%llu -> %llu (%2d)",
1.28 markus 1169: (unsigned long long)req->offset + len,
1.27 itojun 1170: (unsigned long long)req->offset +
1171: req->len - 1, num_req);
1.23 djm 1172: req->id = conn->msg_id++;
1.21 djm 1173: req->len -= len;
1174: req->offset += len;
1.93 djm 1175: send_read_request(conn, req->id,
1.23 djm 1176: req->offset, req->len, handle, handle_len);
1.21 djm 1177: /* Reduce the request size */
1178: if (len < buflen)
1179: buflen = MAX(MIN_READ_SIZE, len);
1180: }
1181: if (max_req > 0) { /* max_req = 0 iff EOF received */
1182: if (size > 0 && offset > size) {
1183: /* Only one request at a time
1184: * after the expected EOF */
1185: debug3("Finish at %llu (%2d)",
1.26 itojun 1186: (unsigned long long)offset,
1187: num_req);
1.21 djm 1188: max_req = 1;
1.49 djm 1189: } else if (max_req <= conn->num_requests) {
1.21 djm 1190: ++max_req;
1191: }
1.1 djm 1192: }
1.21 djm 1193: break;
1194: default:
1.33 deraadt 1195: fatal("Expected SSH2_FXP_DATA(%u) packet, got %u",
1.1 djm 1196: SSH2_FXP_DATA, type);
1197: }
1.21 djm 1198: }
1.1 djm 1199:
1.39 fgsch 1200: if (showprogress && size)
1201: stop_progress_meter();
1202:
1.21 djm 1203: /* Sanity check */
1204: if (TAILQ_FIRST(&requests) != NULL)
1205: fatal("Transfer complete, but requests still in queue");
1.101 djm 1206: /* Truncate at highest contiguous point to avoid holes on interrupt */
1207: if (read_error || write_error || interrupted) {
1208: if (reordered && resume) {
1209: error("Unable to resume download of \"%s\": "
1210: "server reordered requests", local_path);
1211: }
1212: debug("truncating at %llu", (unsigned long long)highwater);
1213: ftruncate(local_fd, highwater);
1214: }
1.21 djm 1215: if (read_error) {
1.28 markus 1216: error("Couldn't read from remote file \"%s\" : %s",
1.21 djm 1217: remote_path, fx2txt(status));
1.103 djm 1218: status = -1;
1.23 djm 1219: do_close(conn, handle, handle_len);
1.21 djm 1220: } else if (write_error) {
1221: error("Couldn't write to \"%s\": %s", local_path,
1222: strerror(write_errno));
1223: status = -1;
1.23 djm 1224: do_close(conn, handle, handle_len);
1.21 djm 1225: } else {
1.23 djm 1226: status = do_close(conn, handle, handle_len);
1.103 djm 1227: if (interrupted || status != SSH2_FX_OK)
1.101 djm 1228: status = -1;
1.21 djm 1229: /* Override umask and utimes if asked */
1230: if (pflag && fchmod(local_fd, mode) == -1)
1231: error("Couldn't set mode on \"%s\": %s", local_path,
1.37 deraadt 1232: strerror(errno));
1.21 djm 1233: if (pflag && (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME)) {
1234: struct timeval tv[2];
1235: tv[0].tv_sec = a->atime;
1236: tv[1].tv_sec = a->mtime;
1237: tv[0].tv_usec = tv[1].tv_usec = 0;
1238: if (utimes(local_path, tv) == -1)
1239: error("Can't set times on \"%s\": %s",
1.37 deraadt 1240: local_path, strerror(errno));
1.1 djm 1241: }
1.10 djm 1242: }
1.5 djm 1243: close(local_fd);
1244: buffer_free(&msg);
1.98 djm 1245: free(handle);
1.23 djm 1246:
1247: return(status);
1.1 djm 1248: }
1249:
1.89 djm 1250: static int
1251: download_dir_internal(struct sftp_conn *conn, char *src, char *dst,
1.101 djm 1252: Attrib *dirattrib, int pflag, int printflag, int depth, int resume)
1.89 djm 1253: {
1254: int i, ret = 0;
1255: SFTP_DIRENT **dir_entries;
1256: char *filename, *new_src, *new_dst;
1257: mode_t mode = 0777;
1258:
1259: if (depth >= MAX_DIR_DEPTH) {
1260: error("Maximum directory depth exceeded: %d levels", depth);
1261: return -1;
1262: }
1263:
1264: if (dirattrib == NULL &&
1265: (dirattrib = do_stat(conn, src, 1)) == NULL) {
1266: error("Unable to stat remote directory \"%s\"", src);
1267: return -1;
1268: }
1269: if (!S_ISDIR(dirattrib->perm)) {
1270: error("\"%s\" is not a directory", src);
1271: return -1;
1272: }
1273: if (printflag)
1274: printf("Retrieving %s\n", src);
1275:
1276: if (dirattrib->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
1277: mode = dirattrib->perm & 01777;
1278: else {
1279: debug("Server did not send permissions for "
1280: "directory \"%s\"", dst);
1281: }
1282:
1283: if (mkdir(dst, mode) == -1 && errno != EEXIST) {
1284: error("mkdir %s: %s", dst, strerror(errno));
1285: return -1;
1286: }
1287:
1288: if (do_readdir(conn, src, &dir_entries) == -1) {
1289: error("%s: Failed to get directory contents", src);
1290: return -1;
1291: }
1292:
1293: for (i = 0; dir_entries[i] != NULL && !interrupted; i++) {
1294: filename = dir_entries[i]->filename;
1295:
1296: new_dst = path_append(dst, filename);
1297: new_src = path_append(src, filename);
1298:
1299: if (S_ISDIR(dir_entries[i]->a.perm)) {
1300: if (strcmp(filename, ".") == 0 ||
1301: strcmp(filename, "..") == 0)
1302: continue;
1303: if (download_dir_internal(conn, new_src, new_dst,
1304: &(dir_entries[i]->a), pflag, printflag,
1.101 djm 1305: depth + 1, resume) == -1)
1.89 djm 1306: ret = -1;
1307: } else if (S_ISREG(dir_entries[i]->a.perm) ) {
1308: if (do_download(conn, new_src, new_dst,
1.101 djm 1309: &(dir_entries[i]->a), pflag, resume) == -1) {
1.89 djm 1310: error("Download of file %s to %s failed",
1311: new_src, new_dst);
1312: ret = -1;
1313: }
1314: } else
1315: logit("%s: not a regular file\n", new_src);
1316:
1.98 djm 1317: free(new_dst);
1318: free(new_src);
1.89 djm 1319: }
1320:
1321: if (pflag) {
1322: if (dirattrib->flags & SSH2_FILEXFER_ATTR_ACMODTIME) {
1323: struct timeval tv[2];
1324: tv[0].tv_sec = dirattrib->atime;
1325: tv[1].tv_sec = dirattrib->mtime;
1326: tv[0].tv_usec = tv[1].tv_usec = 0;
1327: if (utimes(dst, tv) == -1)
1328: error("Can't set times on \"%s\": %s",
1329: dst, strerror(errno));
1330: } else
1331: debug("Server did not send times for directory "
1332: "\"%s\"", dst);
1333: }
1334:
1335: free_sftp_dirents(dir_entries);
1336:
1337: return ret;
1338: }
1339:
1340: int
1341: download_dir(struct sftp_conn *conn, char *src, char *dst,
1.101 djm 1342: Attrib *dirattrib, int pflag, int printflag, int resume)
1.89 djm 1343: {
1344: char *src_canon;
1345: int ret;
1346:
1347: if ((src_canon = do_realpath(conn, src)) == NULL) {
1348: error("Unable to canonicalise path \"%s\"", src);
1349: return -1;
1350: }
1351:
1352: ret = download_dir_internal(conn, src_canon, dst,
1.101 djm 1353: dirattrib, pflag, printflag, 0, resume);
1.98 djm 1354: free(src_canon);
1.89 djm 1355: return ret;
1356: }
1357:
1.1 djm 1358: int
1.23 djm 1359: do_upload(struct sftp_conn *conn, char *local_path, char *remote_path,
1360: int pflag)
1.1 djm 1361: {
1.80 djm 1362: int local_fd;
1363: int status = SSH2_FX_OK;
1.22 djm 1364: u_int handle_len, id, type;
1.100 dtucker 1365: off_t offset, progress_counter;
1.20 djm 1366: char *handle, *data;
1.1 djm 1367: Buffer msg;
1368: struct stat sb;
1369: Attrib a;
1.21 djm 1370: u_int32_t startid;
1371: u_int32_t ackid;
1.22 djm 1372: struct outstanding_ack {
1373: u_int id;
1374: u_int len;
1.77 djm 1375: off_t offset;
1.28 markus 1376: TAILQ_ENTRY(outstanding_ack) tq;
1.22 djm 1377: };
1378: TAILQ_HEAD(ackhead, outstanding_ack) acks;
1.50 pedro 1379: struct outstanding_ack *ack = NULL;
1.22 djm 1380:
1381: TAILQ_INIT(&acks);
1.1 djm 1382:
1383: if ((local_fd = open(local_path, O_RDONLY, 0)) == -1) {
1384: error("Couldn't open local file \"%s\" for reading: %s",
1385: local_path, strerror(errno));
1386: return(-1);
1387: }
1388: if (fstat(local_fd, &sb) == -1) {
1389: error("Couldn't fstat local file \"%s\": %s",
1390: local_path, strerror(errno));
1.41 djm 1391: close(local_fd);
1392: return(-1);
1393: }
1394: if (!S_ISREG(sb.st_mode)) {
1395: error("%s is not a regular file", local_path);
1.1 djm 1396: close(local_fd);
1397: return(-1);
1398: }
1399: stat_to_attrib(&sb, &a);
1400:
1401: a.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
1402: a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
1403: a.perm &= 0777;
1404: if (!pflag)
1405: a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
1406:
1407: buffer_init(&msg);
1408:
1409: /* Send open request */
1.23 djm 1410: id = conn->msg_id++;
1.1 djm 1411: buffer_put_char(&msg, SSH2_FXP_OPEN);
1412: buffer_put_int(&msg, id);
1413: buffer_put_cstring(&msg, remote_path);
1414: buffer_put_int(&msg, SSH2_FXF_WRITE|SSH2_FXF_CREAT|SSH2_FXF_TRUNC);
1415: encode_attrib(&msg, &a);
1.93 djm 1416: send_msg(conn, &msg);
1.33 deraadt 1417: debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path);
1.1 djm 1418:
1419: buffer_clear(&msg);
1420:
1.93 djm 1421: handle = get_handle(conn, id, &handle_len,
1.88 djm 1422: "remote open(\"%s\")", remote_path);
1.1 djm 1423: if (handle == NULL) {
1424: close(local_fd);
1425: buffer_free(&msg);
1.80 djm 1426: return -1;
1.1 djm 1427: }
1428:
1.21 djm 1429: startid = ackid = id + 1;
1.23 djm 1430: data = xmalloc(conn->transfer_buflen);
1.20 djm 1431:
1.1 djm 1432: /* Read from local and write to remote */
1.100 dtucker 1433: offset = progress_counter = 0;
1.39 fgsch 1434: if (showprogress)
1.100 dtucker 1435: start_progress_meter(local_path, sb.st_size,
1436: &progress_counter);
1.39 fgsch 1437:
1.19 deraadt 1438: for (;;) {
1.1 djm 1439: int len;
1440:
1441: /*
1.51 deraadt 1442: * Can't use atomicio here because it returns 0 on EOF,
1.49 djm 1443: * thus losing the last block of the file.
1.51 deraadt 1444: * Simulate an EOF on interrupt, allowing ACKs from the
1.49 djm 1445: * server to drain.
1.1 djm 1446: */
1.80 djm 1447: if (interrupted || status != SSH2_FX_OK)
1.49 djm 1448: len = 0;
1449: else do
1.23 djm 1450: len = read(local_fd, data, conn->transfer_buflen);
1.1 djm 1451: while ((len == -1) && (errno == EINTR || errno == EAGAIN));
1452:
1453: if (len == -1)
1454: fatal("Couldn't read from \"%s\": %s", local_path,
1455: strerror(errno));
1.21 djm 1456:
1457: if (len != 0) {
1.22 djm 1458: ack = xmalloc(sizeof(*ack));
1459: ack->id = ++id;
1460: ack->offset = offset;
1461: ack->len = len;
1462: TAILQ_INSERT_TAIL(&acks, ack, tq);
1463:
1.21 djm 1464: buffer_clear(&msg);
1465: buffer_put_char(&msg, SSH2_FXP_WRITE);
1.22 djm 1466: buffer_put_int(&msg, ack->id);
1.21 djm 1467: buffer_put_string(&msg, handle, handle_len);
1468: buffer_put_int64(&msg, offset);
1469: buffer_put_string(&msg, data, len);
1.93 djm 1470: send_msg(conn, &msg);
1.33 deraadt 1471: debug3("Sent message SSH2_FXP_WRITE I:%u O:%llu S:%u",
1.37 deraadt 1472: id, (unsigned long long)offset, len);
1.22 djm 1473: } else if (TAILQ_FIRST(&acks) == NULL)
1.1 djm 1474: break;
1475:
1.22 djm 1476: if (ack == NULL)
1477: fatal("Unexpected ACK %u", id);
1478:
1.28 markus 1479: if (id == startid || len == 0 ||
1.23 djm 1480: id - ackid >= conn->num_requests) {
1.32 markus 1481: u_int r_id;
1.31 djm 1482:
1.22 djm 1483: buffer_clear(&msg);
1.93 djm 1484: get_msg(conn, &msg);
1.22 djm 1485: type = buffer_get_char(&msg);
1.31 djm 1486: r_id = buffer_get_int(&msg);
1.22 djm 1487:
1488: if (type != SSH2_FXP_STATUS)
1489: fatal("Expected SSH2_FXP_STATUS(%d) packet, "
1490: "got %d", SSH2_FXP_STATUS, type);
1491:
1492: status = buffer_get_int(&msg);
1493: debug3("SSH2_FXP_STATUS %d", status);
1494:
1495: /* Find the request in our queue */
1.53 deraadt 1496: for (ack = TAILQ_FIRST(&acks);
1.31 djm 1497: ack != NULL && ack->id != r_id;
1.22 djm 1498: ack = TAILQ_NEXT(ack, tq))
1499: ;
1500: if (ack == NULL)
1.33 deraadt 1501: fatal("Can't find request for ID %u", r_id);
1.22 djm 1502: TAILQ_REMOVE(&acks, ack, tq);
1.77 djm 1503: debug3("In write loop, ack for %u %u bytes at %lld",
1504: ack->id, ack->len, (long long)ack->offset);
1.21 djm 1505: ++ackid;
1.100 dtucker 1506: progress_counter += ack->len;
1.98 djm 1507: free(ack);
1.1 djm 1508: }
1509: offset += len;
1.77 djm 1510: if (offset < 0)
1511: fatal("%s: offset < 0", __func__);
1.1 djm 1512: }
1.80 djm 1513: buffer_free(&msg);
1514:
1.39 fgsch 1515: if (showprogress)
1516: stop_progress_meter();
1.98 djm 1517: free(data);
1.1 djm 1518:
1.80 djm 1519: if (status != SSH2_FX_OK) {
1520: error("Couldn't write to remote file \"%s\": %s",
1521: remote_path, fx2txt(status));
1522: status = -1;
1523: }
1524:
1.1 djm 1525: if (close(local_fd) == -1) {
1526: error("Couldn't close local file \"%s\": %s", local_path,
1527: strerror(errno));
1.5 djm 1528: status = -1;
1.1 djm 1529: }
1530:
1.10 djm 1531: /* Override umask and utimes if asked */
1532: if (pflag)
1.23 djm 1533: do_fsetstat(conn, handle, handle_len, &a);
1.10 djm 1534:
1.80 djm 1535: if (do_close(conn, handle, handle_len) != SSH2_FX_OK)
1536: status = -1;
1.98 djm 1537: free(handle);
1.5 djm 1538:
1.80 djm 1539: return status;
1.1 djm 1540: }
1.89 djm 1541:
1542: static int
1543: upload_dir_internal(struct sftp_conn *conn, char *src, char *dst,
1544: int pflag, int printflag, int depth)
1545: {
1546: int ret = 0, status;
1547: DIR *dirp;
1548: struct dirent *dp;
1549: char *filename, *new_src, *new_dst;
1550: struct stat sb;
1551: Attrib a;
1552:
1553: if (depth >= MAX_DIR_DEPTH) {
1554: error("Maximum directory depth exceeded: %d levels", depth);
1555: return -1;
1556: }
1557:
1558: if (stat(src, &sb) == -1) {
1559: error("Couldn't stat directory \"%s\": %s",
1560: src, strerror(errno));
1561: return -1;
1562: }
1563: if (!S_ISDIR(sb.st_mode)) {
1564: error("\"%s\" is not a directory", src);
1565: return -1;
1566: }
1567: if (printflag)
1568: printf("Entering %s\n", src);
1569:
1570: attrib_clear(&a);
1571: stat_to_attrib(&sb, &a);
1572: a.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
1573: a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
1574: a.perm &= 01777;
1575: if (!pflag)
1576: a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
1.101 djm 1577:
1.89 djm 1578: status = do_mkdir(conn, dst, &a, 0);
1579: /*
1580: * we lack a portable status for errno EEXIST,
1581: * so if we get a SSH2_FX_FAILURE back we must check
1582: * if it was created successfully.
1583: */
1584: if (status != SSH2_FX_OK) {
1585: if (status != SSH2_FX_FAILURE)
1586: return -1;
1.101 djm 1587: if (do_stat(conn, dst, 0) == NULL)
1.89 djm 1588: return -1;
1589: }
1590:
1591: if ((dirp = opendir(src)) == NULL) {
1592: error("Failed to open dir \"%s\": %s", src, strerror(errno));
1593: return -1;
1594: }
1.101 djm 1595:
1.89 djm 1596: while (((dp = readdir(dirp)) != NULL) && !interrupted) {
1597: if (dp->d_ino == 0)
1598: continue;
1599: filename = dp->d_name;
1600: new_dst = path_append(dst, filename);
1601: new_src = path_append(src, filename);
1602:
1.90 dtucker 1603: if (lstat(new_src, &sb) == -1) {
1604: logit("%s: lstat failed: %s", filename,
1605: strerror(errno));
1606: ret = -1;
1607: } else if (S_ISDIR(sb.st_mode)) {
1.89 djm 1608: if (strcmp(filename, ".") == 0 ||
1609: strcmp(filename, "..") == 0)
1610: continue;
1611:
1612: if (upload_dir_internal(conn, new_src, new_dst,
1.92 djm 1613: pflag, printflag, depth + 1) == -1)
1.89 djm 1614: ret = -1;
1.90 dtucker 1615: } else if (S_ISREG(sb.st_mode)) {
1.89 djm 1616: if (do_upload(conn, new_src, new_dst, pflag) == -1) {
1617: error("Uploading of file %s to %s failed!",
1618: new_src, new_dst);
1619: ret = -1;
1620: }
1621: } else
1622: logit("%s: not a regular file\n", filename);
1.98 djm 1623: free(new_dst);
1624: free(new_src);
1.89 djm 1625: }
1626:
1627: do_setstat(conn, dst, &a);
1628:
1629: (void) closedir(dirp);
1630: return ret;
1631: }
1632:
1633: int
1.104 ! djm 1634: upload_dir(struct sftp_conn *conn, char *src, char *dst, int pflag,
! 1635: int printflag)
1.89 djm 1636: {
1637: char *dst_canon;
1638: int ret;
1639:
1640: if ((dst_canon = do_realpath(conn, dst)) == NULL) {
1641: error("Unable to canonicalise path \"%s\"", dst);
1642: return -1;
1643: }
1644:
1645: ret = upload_dir_internal(conn, src, dst_canon, pflag, printflag, 0);
1.98 djm 1646: free(dst_canon);
1.89 djm 1647: return ret;
1648: }
1649:
1650: char *
1651: path_append(char *p1, char *p2)
1652: {
1653: char *ret;
1654: size_t len = strlen(p1) + strlen(p2) + 2;
1655:
1656: ret = xmalloc(len);
1657: strlcpy(ret, p1, len);
1658: if (p1[0] != '\0' && p1[strlen(p1) - 1] != '/')
1659: strlcat(ret, "/", len);
1660: strlcat(ret, p2, len);
1661:
1662: return(ret);
1663: }
1664:
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